WO2021120161A1 - 曲面显示装置以及交通工具 - Google Patents

曲面显示装置以及交通工具 Download PDF

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Publication number
WO2021120161A1
WO2021120161A1 PCT/CN2019/126915 CN2019126915W WO2021120161A1 WO 2021120161 A1 WO2021120161 A1 WO 2021120161A1 CN 2019126915 W CN2019126915 W CN 2019126915W WO 2021120161 A1 WO2021120161 A1 WO 2021120161A1
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WO
WIPO (PCT)
Prior art keywords
display panel
display device
middle frame
bottom wall
curved display
Prior art date
Application number
PCT/CN2019/126915
Other languages
English (en)
French (fr)
Inventor
张宇
李会艳
耿仕新
王伯长
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2019/126915 priority Critical patent/WO2021120161A1/zh
Priority to CN201980003157.0A priority patent/CN113287159B/zh
Priority to US17/036,444 priority patent/US11300819B2/en
Publication of WO2021120161A1 publication Critical patent/WO2021120161A1/zh
Priority to US17/690,260 priority patent/US11573441B2/en

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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • At least one embodiment of the present disclosure relates to a curved display device and a vehicle.
  • the curved display device can form a display area with a curved shape.
  • the curved display device When the curved display device is applied to a large-size display device, it can reduce the difference between the viewing angle of the user viewing the middle of the display area and the viewing angle of viewing the edge of the display area. Achieve better display effect.
  • the curved display device includes a display panel, a first middle frame, a backlight assembly and a back plate.
  • the first middle frame is located on the non-display side of the display panel and is configured to carry the display panel;
  • the backlight assembly is located on the side of the first middle frame away from the display panel, and includes an optical film and a second A middle frame, the second middle frame is located on a side of the optical film away from the display panel and is configured to support the optical film; at least part of the back plate is located on the backlight assembly away from the display One side of the panel.
  • the back plate includes a bottom plate and a side plate arranged on an edge of the bottom plate, and the second middle frame is connected to the bottom plate.
  • the bottom plate includes a bottom wall and a first support portion located outside an edge of the bottom wall, the first support portion is located on a side of the bottom wall facing the display panel, and the first support
  • the second support portion has a first support surface facing the display panel
  • the second middle frame includes a second support portion
  • the second support portion has a second support surface facing the display panel to support the optical film
  • the second supporting portion is provided on the first supporting surface of the first supporting portion.
  • the second supporting portion of the second middle frame is fixed to each other in a direction perpendicular to the first supporting surface by a first fixing member and the first supporting portion.
  • the second supporting portion includes a fixing hole penetrating the second supporting portion in a direction perpendicular to the first supporting surface, and the first fixing member is located in the fixing hole and is parallel to In the direction of the first supporting surface, the size of the fixing hole is larger than the size of the first fixing member so that there is a gap between the first fixing member and the inner side wall of the fixing hole.
  • the hardness of the material of the second middle frame is greater than the hardness of the material of the first middle frame.
  • the side of the first middle frame away from the display panel is pressed against the optical film.
  • the bottom wall includes two first sides opposite to each other, and the first side is an arc-shaped side; the first support portion includes a first arc-shaped strip corresponding to the first side Portion, the bending direction of the first arc-shaped strip portion is the same as the bending direction of the first side.
  • the fixing hole is a round hole, and along a direction parallel to the diameter of the round hole, the size of the fixing hole is larger than the size of the first fixing member.
  • the fixing hole is an elliptical hole, the major axis of the elliptical hole is parallel to the first side, and along the direction parallel to the first side, the size of the fixing hole is larger than The size of the first fixing member.
  • the bottom plate further includes a connecting portion connecting the edge of the bottom wall and the first supporting portion, and the first supporting portion extends outward from the edge of the connecting portion.
  • the backlight assembly further includes a light source assembly and a reflective sheet
  • the light source assembly includes light-emitting diodes arranged in an array
  • the reflective sheet is located on the light-emitting surface of the light source assembly and exposes the light-emitting diodes.
  • the light source assembly is arranged on a side of the bottom wall close to the display panel.
  • the second middle frame further includes an extension part connected to the second support part and partially located inside the connecting part of the back plate, and the extension part extends in a direction close to the bottom wall; The end of the extension part away from the second supporting part presses against the circumference of the reflection sheet.
  • the edge connecting the extension portion and the second support portion is located outside the edge of the extension portion pressed against the reflective sheet, and the extension portion is connected to the second support portion.
  • the edge is located on the side of the extension portion that presses the end of the reflective sheet close to the display panel, so that the inner surface of the extension portion is formed as an inclined surface, and the reflectivity of the inclined surface is not less than that of the The reflectivity of the reflector.
  • the bottom wall includes two second sides opposite to each other, the second sides are straight sides, the light-emitting diodes are located on a plurality of strip light panels, and each strip light panel The extension direction of is parallel to the second side.
  • the backlight assembly further includes at least one adapter plate located on a side of the bottom wall facing the display panel, and each adapter plate is connected to at least two of the strip-shaped lamp panels. Provide drive signal.
  • the bottom wall further includes two first sides opposite to each other, the first sides are arc-shaped sides; the connecting portion is provided with a strip-shaped outlet hole, and the connecting portion is provided with the strip The portion of the wire outlet hole is connected to the first side of the bottom wall close to the adapter plate, and the long axis of the strip wire outlet hole is parallel to the first side.
  • the curved display device further includes a light source driving board, which is located on a side of the bottom wall away from the display panel, and the adapter board communicates with the light source driving board through wires drawn from the bar-shaped outlet holes. connection.
  • a side of the bottom wall away from the display panel is provided with an arc-shaped stiffener, the extension direction of the arc-shaped stiffener is the same as the extension direction of the first side, and the arc-shaped stiffener
  • the strength of the rib is greater than the strength of the bottom wall to prevent deformation of the bottom wall.
  • the side plate extends from the outer edge of the first support portion toward the display panel, the first middle frame includes an outer frame surrounding the display panel, and a part of the outer frame is located at the display panel.
  • the outer side of the side plate is fixedly connected with the side plate.
  • the first middle frame includes a third support portion configured to carry the display panel, the third support portion has a third support surface facing the display panel, and the third support surface And the inner side of the outer frame wrapping the display panel is provided with a buffer.
  • the curved display device further includes: a front frame located on a side of the first middle frame away from the backlight assembly and configured to press against the display panel and the outer frame of the first middle frame The surface away from the side of the bottom plate to ensure the curvature of the display panel and the first middle frame.
  • the front frame includes a front frame side wall that is located away from the side plate of the outer frame, and the front frame side wall includes an elongated hole to allow the front frame side wall to pass through the
  • the second fixing member of the elongated hole is fixedly connected to the side plate, the minor axis of the elongated hole is substantially perpendicular to the first supporting surface and along the extension direction of the minor axis, the second The size of the fixing member is approximately equal to the size of the short shaft.
  • the four sides included in the display panel are connected one by one to form four corners, and the side plate surrounds at least one of the four corners of the display panel facing the third supporting surface.
  • a groove is provided on one side.
  • the material of the first middle frame is a light-shielding material.
  • the curved display device is a vehicle-mounted curved display device.
  • At least one embodiment of the present disclosure provides a vehicle including the above-mentioned curved display device.
  • FIG. 1A is an exploded schematic diagram of a curved display device according to an embodiment of the present disclosure
  • FIG. 1B is a cross-sectional view of the curved display device shown in FIG. 1A in an assembled state
  • FIG. 2A is a schematic diagram of the planar structure of the backplane shown in FIG. 1A;
  • FIG. 2B is a schematic cross-sectional view taken along line AA shown in FIG. 2A;
  • Fig. 2C is an enlarged schematic diagram of position B in Fig. 2A;
  • 3A is a first cross-sectional view of the structure diagram of the backplane and the backlight assembly shown in FIG. 1A assembling;
  • 3B is a second cross-sectional view of the assembled structure of the backplane and the backlight assembly shown in FIG. 1A;
  • 3C is an enlarged schematic plan view of the connection between the second middle frame and the first supporting portion in an example of the embodiments of the present disclosure
  • Fig. 3D is a schematic cross-sectional view taken along the line CC' shown in Fig. 3C;
  • 3E is an enlarged schematic plan view of the connection between the second middle frame and the first supporting portion in another example of the embodiments of the disclosure.
  • 3F is a schematic side view of the second middle frame shown in FIG. 3A;
  • FIG. 4A is a schematic partial plan view of the second middle frame and the optical film shown in FIG. 3A after being assembled;
  • FIG. 4B is a schematic diagram of the planar structure of the optical film shown in FIG. 4A;
  • FIG. 5A is a schematic plan view of the strip light board in the light source assembly shown in FIG. 1A and FIG. 1B;
  • Fig. 5B is a schematic plan view of the adapter plate connected to the strip light board shown in Fig. 5A;
  • 5C is a schematic diagram of assembling the back plate and the light source assembly in the curved display device shown in FIG. 1A;
  • 5D is a plan view of the side of the back plate away from the display panel in the curved display device shown in FIG. 1A;
  • Fig. 5E is a partial side view of the connecting portion of the backplane shown in Fig. 1A;
  • 6A is a partial cross-sectional schematic diagram of the assembly of the first middle frame, the backlight assembly, and the back plate in the curved display device shown in FIG. 1A;
  • Fig. 6B is a schematic plan view of the first middle frame shown in Fig. 1A;
  • Fig. 6C is an enlarged schematic diagram of position D in Fig. 6B;
  • FIG. 6D is a schematic side view of the first middle frame in FIG. 6C;
  • FIG. 7A is a schematic plan view of the front frame shown in FIG. 1A;
  • FIG. 7B is a schematic structural view of the side wall of the front frame of the front frame shown in FIG. 7A;
  • Fig. 7C is an enlarged schematic diagram of the position E in the side wall of the front frame shown in Fig. 7A;
  • Fig. 7D is a partial structural diagram of the connection between the front frame and the back plate shown in Fig. 1A;
  • FIG. 8 is a schematic diagram of a curvature tolerance relationship of a curved display device according to an embodiment of the present disclosure.
  • a curved display device includes a middle frame, which is used to support the display panel in the display device and has a light-shielding effect on the periphery of the display panel.
  • An optical film is arranged on the side of the middle frame away from the display panel, and the edge of the optical film includes a plurality of openings to be sleeved on a plurality of protrusions arranged on the edge of the side wall of the back plate to realize the fixing of the edge of the optical film .
  • the edge of the optical film and the upper edge of the side wall of the back plate will have a good bonding effect.
  • the deterioration causes wrinkles in the optical film, which in turn affects the display effect of the display device.
  • the part of the optical film excluding the edge can also be supported by a plurality of light poles arranged on the side away from the display panel. Since the light pole only supports the optical film, and is not fixedly connected to the optical film, when the above-mentioned curved display device is used in a vehicle (such as an automobile), the problem of unacceptable vibration reliability may occur.
  • a middle frame included in another curved display device is used to support the optical film and the display panel, and is required to have a greater hardness, and the support part of the middle frame for supporting the optical film has a larger thickness.
  • the expansion and contraction of the material of the middle frame will increase.
  • the middle frame expands, it will interfere with other structures such as the front frame and cause light leakage;
  • the fixed gap between the optical films is reduced, and film wrinkles occur, resulting in poor display images.
  • the upper edge of the above-mentioned middle frame and the upper edge of the side wall of the back plate are coarsely positioned by a hook structure or the like.
  • the above-mentioned fixing method of the middle frame and the side wall of the back plate will cause large assembly tolerances, which will affect the curvature accuracy of the display device.
  • the thicker thickness of the middle frame in the above-mentioned curved display device not only increases the difficulty of processing and molding, but also makes it difficult to deform during the fixing process of the middle frame and the back plate, so that it is difficult to match the curvature of the back plate. The problem.
  • the curvature tolerances of the backplane, middle frame, and front frame in the curved display device will affect the curvature accuracy of the entire curved display device. Therefore, the curvature accuracy of the current large-scale curved display device is only 10%.
  • An embodiment of the present disclosure provides a curved display device, including: a display panel, a first middle frame, a backlight assembly, and a back plate.
  • the first middle frame is located on the non-display side of the display panel and is configured to carry the display panel;
  • the backlight assembly is located on the side of the first middle frame away from the display panel, and includes an optical film and a second middle frame.
  • the film is on a side away from the display panel and is configured to support the optical film; at least part of the back plate is located on the side of the backlight assembly away from the display panel.
  • the back plate includes a bottom plate and a side plate arranged on the edge of the bottom plate, and the second middle frame is connected to the bottom plate.
  • two middle frames are arranged in the curved display device, and the second middle frame is fixed on the bottom plate of the backplane to minimize the assembly tolerance, thereby improving the curvature accuracy of the display device.
  • FIG. 1A is an exploded schematic diagram of a curved display device according to an embodiment of the present disclosure
  • FIG. 1B is a cross-sectional view of the curved display device shown in FIG. 1A in an assembled state.
  • the curved display device includes a front frame 600, a display panel 100, a first middle frame 200, a backlight assembly 300, and a back plate 400 in sequence.
  • the display panel included in the curved display device may be a liquid crystal display panel.
  • the liquid crystal display panel may include an array substrate (not shown), a counter substrate (not shown), and a liquid crystal layer (not shown) between the array substrate and the counter substrate.
  • the side of the array substrate facing the opposing substrate may include a plurality of gate lines extending in one direction and a plurality of data lines extending in another direction, and the plurality of gate lines and the plurality of data lines are intersected to define the array arrangement Of multiple pixel units.
  • Each pixel unit may include a pixel electrode and a thin film transistor, the gate line is connected to the gate of the thin film transistor to control the on or off of the thin film transistor, the pixel electrode is connected to one of the source and drain of the thin film transistor, and the data line is connected to the source of the thin film transistor. The other of the drains is connected, and the data line inputs the voltage signal required for displaying the picture to the pixel electrode through the thin film transistor to realize the display of the array substrate.
  • the counter substrate may be a color filter substrate
  • the side of the color filter substrate facing the array substrate may be provided with a color filter layer corresponding to the pixel unit and a black matrix covering a structure in the non-display area such as gate lines and data lines.
  • the side of the color filter substrate facing the array substrate may also be provided with a common electrode opposite to the pixel electrode.
  • the common electrode is configured to apply a common voltage to the pixel electrode to generate an electric field that drives the liquid crystal molecules in the liquid crystal layer to deflect.
  • the liquid crystal molecules are deflected to change the transmittance of the liquid crystal layer, thereby realizing the display of the desired grayscale image.
  • the display panel 100 may further include a first polarizer disposed on a side of the array substrate away from the counter substrate and a second polarizer disposed on a side of the counter substrate away from the array substrate.
  • the first polarizer includes a transmission axis extending in a first direction and polarizes the backlight incident therein in the first direction.
  • the second polarizer includes a light transmission axis extending in the second direction and polarizes light incident on the second polarizer in the second direction.
  • the transmission axis of the first polarizer and the transmission axis of the second polarizer are perpendicular to each other.
  • the backlight assembly 300 is located on the non-display side of the display panel 100 to provide backlight for the display panel 100.
  • the backlight assembly 300 provided by an embodiment of the present disclosure may be a direct type backlight assembly, including a light source assembly 330, an optical film 310 located between the light source assembly 330 and the display panel 100, and a side of the light source assembly 330 facing the optical film 310 ⁇ reflective sheet 340.
  • the light source assembly 330 includes light emitting diodes arranged in an array.
  • the optical film 310 may include a diffusion plate, a first diffusion sheet, a prism layer, and a second diffusion sheet stacked in sequence.
  • the material of the diffuser plate can be a light-transmitting material such as polymethyl methacrylate (PMMA) or polycarbonate (PC), which has a thicker thickness and a light transmittance between 50% and 80%.
  • the first diffuser takes into consideration the degree of haze, and the material is generally selected from materials such as polyethylene terephthalate (PET) or polycarbonate, and is arranged on the side of the diffuser away from the light source assembly , Make the light distribution more uniform.
  • the prism layer can be selected with a zigzag or wave-shaped polymethyl methacrylate and other microstructures, which has a good light-gathering effect.
  • the second diffuser chooses a material with a higher transmittance and a lower degree of matte, which can be used as a structure to protect the prism layer.
  • a certain light mixing distance is set between the light source assembly 330 and the diffuser so that the light emitted by the light source assembly 330 forms a uniform energy distribution between the light source assembly 330 and the diffuser.
  • the first diffusion sheet, the prism layer, and the second diffusion sheet are configured to uniformly take out the light emitted by the light source assembly 330.
  • the backlight assembly 300 may further include a reflective sheet 340, which is located on the light-emitting surface of the light source assembly 330 and exposes the light-emitting diodes, that is, the reflective sheet 340 includes opening areas corresponding to the light-emitting diodes one-to-one. Expose the light-emitting diodes.
  • the back plate 400 is used to support the light source assembly 330.
  • the first middle frame 200 is located on the non-display side of the display panel 100, that is, the first middle frame 200 is located between the display panel 100 and the backlight assembly 300 and is configured to carry the display panel 100.
  • the backlight assembly 300 further includes a second middle frame 320 located on a side of the optical film 310 away from the display panel 100, and the second middle frame 320 is configured to support the optical film 310.
  • the curved display device provided by the embodiment of the present disclosure further includes a back plate 400 located on the side of the backlight assembly 300 away from the display panel 100.
  • the back plate 400 includes a bottom plate 410 and a side plate 420 disposed on the edge of the bottom plate 410.
  • the second middle frame 320 is connected to On the bottom plate 410 of the back plate 400.
  • the above-mentioned “the second middle frame 320 is connected to the bottom plate 410 of the back plate 400” means that the second middle frame is in contact with the bottom plate, and in at least one direction, the second middle frame is fixedly connected to the bottom plate.
  • the assembly tolerance can be minimized, and the curvature accuracy of the display device can be improved.
  • FIG. 2A is a schematic plan view of the back plate shown in FIG. 1A
  • FIG. 2B is a schematic cross-sectional view taken along the line AA shown in FIG. 2A
  • the bottom plate 410 and the side plate 420 of the back plate 400 form an accommodation space to accommodate the backlight assembly 300.
  • the bottom plate 410 of the back plate 400 includes a bottom wall 411 and a first supporting portion 413 located outside the edge of the bottom wall 411.
  • the bottom plate 410 further includes a connecting portion 412 connecting the edge of the bottom wall 411 and the first supporting portion 413, and the first supporting portion 413 extends outward from the edge of the connecting portion 412.
  • the light source assembly 330 and the reflective sheet 340 included in the backlight assembly 300 are both located on a side surface of the bottom wall 411 facing the display panel 100, and the bottom wall 411 is used to carry the light source assembly 330 and the reflective sheet 340.
  • the bottom wall 411 in the embodiment of the present disclosure has a curved surface structure for maintaining a predetermined curvature of the display panel 100.
  • the bottom wall may be curved concavely, that is, the edge of the bottom wall is curved toward the side facing the display panel.
  • the bottom wall 411 includes two first sides 4111 opposite to each other.
  • the first sides 4111 are curved sides, such as arc sides, so that the bottom wall 411 has a curved structure.
  • the bottom wall 411 further includes a second side 4112 opposite to each other, and this embodiment is described by taking the second side 4112 as a straight side as an example.
  • the second side may also be a curved side, as long as the bottom wall enclosed by the first side and the second side has a curved structure.
  • 2B is a schematic cross-sectional view of the back plate taken along a plane parallel to the second side according to an embodiment of the present disclosure. As can be seen from FIG. 2B, the bottom wall extends substantially along a straight line in the direction along the second side.
  • the above-mentioned first side and second side refer to the side defined by the part where the bottom wall meets the connecting portion.
  • the display device provided by the embodiment of the present disclosure is a large-size display device, for example, when the size is greater than 40 inches, the arc-shaped first side 4111 has a longer length than the linear second side 4112 to achieve better display. effect.
  • an arc-shaped reinforcing rib 500 is provided on the side of the bottom wall 411 away from the display panel 100, and the extending direction of the arc-shaped reinforcing rib 500 is the same as The extension direction of the first side 4111 is the same, and the strength of the arc-shaped stiffener 500 is greater than the strength of the bottom wall 411 to effectively restrain the bottom wall 411, prevent the bottom wall 411 from being deformed, and thereby ensure the curvature of the bottom wall 411.
  • the arc-shaped reinforcing rib 500 is disposed on the side of the bottom wall 411 away from the display panel 100 to prevent the bottom wall 411 from being deformed.
  • the material of the arc-shaped reinforcing rib 500 may be an electro-galvanized steel plate with a thickness of 2 mm, and the material of the bottom wall 411 may be aluminum with a thickness of 1.5 mm.
  • the arc-shaped stiffener 500 may be located at the edge of the bottom wall 411 extending along the extending direction of the first side 4111 to better ensure the curvature of the bottom wall.
  • the side of the bottom wall away from the display panel can also be provided with an arc-shaped stiffener extending along the extension direction of the second side to further ensure the curvature of the bottom wall.
  • the arc-shaped reinforcing rib 500 may be connected to the bottom wall by a fastener, for example, the fastener may include a structure such as a screw or a bolt.
  • the two edges of the bottom wall 411 that are away from the display panel 100 and extend along the extension direction of the first side 4111 can be provided with arc-shaped stiffeners 500 to better ensure the curvature of the bottom wall 411. .
  • each arc-shaped stiffener 500 may include a central portion 501 and an edge portion 502 fixed to the bottom wall 411, and a certain distance may be set between the central portion 501 and the bottom wall 411, that is, the central portion
  • the 501 can be provided with a hollow structure to ensure strength and curvature while reducing weight.
  • the hardness of the material selected for the arc-shaped stiffener 500 is greater than the hardness of the material of the backplane to enhance the strength of the backplane and prevent the deformation of the backplane from affecting the curvature accuracy of the display device.
  • the arc-shaped rib at each edge is a continuous rib as an example, but it is not limited to this.
  • the arc-shaped rib at any edge may also include a plurality of sub-reinforcing ribs separated from each other, as long as the reinforcement
  • the ribs can only have the effect of ensuring the curvature of the bottom wall, and the number and shape of the arc-shaped reinforcing ribs are not limited in the embodiments of the present disclosure.
  • a plurality of support columns may be provided on the side of the above-mentioned arc-shaped stiffener away from the bottom wall to realize the display. Fixing of the device. For example, along the extending direction of the arc-shaped reinforcement ribs, a plurality of support columns are provided at the center of the arc-shaped reinforcement ribs to fix the curved display device on the vehicle.
  • the connecting portion 412 may be a structure surrounding the bottom plate 410, and the connecting portion 412 is used to form a light mixing cavity between the light source assembly 330 and the optical film 310 so that the light source assembly 330 and the optical A certain light mixing distance is formed between the diaphragms 310.
  • the embodiment of the present disclosure is not limited to this.
  • the connecting portion may only be provided at the position of the two first sides of the bottom wall, that is, the connecting portion connected to the bottom wall is not provided at the second side of the bottom wall, then the first support The part only includes the curved parts corresponding to the two first sides.
  • the connecting portion 412 is located at the edge of the bottom wall 411 and extends toward the side of the bottom wall 411 facing the display panel 100.
  • the end of the connecting portion 412 away from the bottom wall 411 is located outside of the connection position of the connecting portion 412 and the bottom wall 411 to facilitate the integral molding of the bottom wall and the connecting portion.
  • the embodiments of the present disclosure are not limited to this, and the connecting portion may also be perpendicular to the second side of the bottom wall, as long as the bottom wall and the first supporting portion can be connected.
  • the bottom plate 410 further includes a first supporting portion 413 extending outward from the edge of the connecting portion 412 away from the bottom wall 411, and the first supporting portion 413 is located on a side of the bottom wall 411 facing the display panel 100. side.
  • the first supporting portion 413 may be a continuous ring structure surrounding the display panel to support the second middle frame mentioned later.
  • the first support portion may also be a discontinuous ring structure, as long as it can support the second middle frame.
  • the ring-shaped first supporting portion 413 includes a first arc-shaped strip portion 4131 corresponding to the first side 4111, and the bending direction of the first arc-shaped strip portion 4131 is the same as that of the first side 4111.
  • the bottom wall in the embodiment of the present disclosure adopts a curved surface structure, and the first side of the bottom wall is an arc-shaped side, so that the first support part connected to the first side of the bottom wall through the connecting part is formed as a first support part having an arc shape. Curved strip.
  • the back plate in the embodiment of the present disclosure may be formed by an integral die-casting or stamping forming process
  • the bottom plate of the back plate may be an integrally formed structure, that is, the bottom wall, the connecting portion, and the first support portion are integrally formed structures, thereby At the same time as the curved bottom wall is formed, the first arc-shaped strip portion of the first support portion is formed.
  • the back plate can be formed by a stamping process.
  • the back plate When the back plate is formed by a stamping process, the resilience is relatively large, and an additional structure is required to ensure the curvature; the back plate can also be formed by a die-casting process (the molten iron flows into the designed In the model, and cooled to form) to reduce the material rebound rate and dehydration rate after molding.
  • the material of the back plate can be aluminum or electro-galvanized steel.
  • the material of the backplane can be based on the actual product power consumption and heat dissipation performance requirements.
  • the display device has special requirements for temperature (for example, when the white light brightness of the display device is 1000 nits, the temperature of the backplane must not be higher than 48°C).
  • the thickness of the bottom wall may be 1.5 mm, which is not limited in the embodiment of the present disclosure.
  • the first supporting portion 413 has a first supporting surface 4130 facing the display panel 100, and the first supporting surface 4130 is used to support the second middle frame 320.
  • the first supporting surface may be a continuous annular surface.
  • the first supporting surface of the first supporting portion means that the side of the first supporting portion facing the second middle frame is provided with a plane supporting the second middle frame, and the first supporting surface is defined as such a plane This is to better illustrate the positional relationship between other components and the first supporting surface, but it does not mean that the side surface of the first supporting portion must be flat.
  • the first supporting surface as a plane may be a plane located at the bottom of the convex structures or a surface passing through the side surface of the first supporting portion. A little plane.
  • the side plate 420 of the back plate 400 extends from the outer edge of the first supporting portion 413 toward the display panel 100.
  • the side plate 420 may be a ring structure surrounding the display panel 100 in a circle.
  • FIG. 2C is an enlarged view at position B in FIG. 2A.
  • the four sides of the display panel 100 are connected one by one to form four corners.
  • the side plate 420 surrounds at least one of the four corners of the display panel 100 and faces the side of the display panel 100.
  • a groove 421 is provided.
  • the bottom plate 410 and the side plates 420 in the back plate 400 may be an integrally formed structure, for example, an integral die-casting or stamping forming process may be used to form the back plate.
  • grooves are provided at at least one of the four corners of the side plate, which can prevent the side plate from being stacked at the angle of the side plate when the back plate is formed by a stamping process to form a curved structure.
  • the position is convex, so that the curvature of the first middle frame and the front frame of the back plate on the side far away from the bottom wall can be ensured, thereby ensuring the curvature accuracy of the display device.
  • FIG. 3A is the first cross-sectional view of the structure of the backplane and the backlight assembly
  • FIG. 3B is the second cross-sectional view of the structure of the backplane and the backlight assembly.
  • the backlight assembly 300 includes a light source assembly 330, a reflective sheet 340, a second middle frame 320, and an optical film 310.
  • the second middle frame 320 includes a second supporting portion 321, and the second supporting portion 321 is disposed on the first supporting surface 4130 of the first supporting portion 413.
  • the second support portion 321 is configured to support the optical film 310, that is, the second support portion 321 has a second support surface 3215 facing the display panel 100, and the second support surface 3215 is used to support the optical film 310.
  • the second supporting portion 321 includes a first portion 3216 for supporting the optical film and a second portion 3217 in contact with the first supporting portion 413 of the bottom plate.
  • the first portion 3216 of the second support portion 321 is provided with a second support surface 3215 on the side facing the optical film.
  • the second portion 3217 of the second support portion 321 extends in a direction substantially perpendicular to the second support surface 3215 and is connected to the second support surface 3215.
  • a supporting portion 413 contacts, and the first supporting portion 413 supports the second portion 3217 of the second supporting portion 321 to support the second middle frame 320.
  • the first supporting surface 4130 of the first supporting part 413 of the bottom plate 410 is fixedly connected to the second supporting part 321 of the second middle frame 320, that is, the second supporting part 321 of the second middle frame 320 is fixed to the first supporting part 321 of the bottom plate 410.
  • the support part 413 is on.
  • the first portion 3216 of the second supporting portion 321 is fixed on the first supporting portion 413 of the bottom plate 410.
  • Fig. 3C is an enlarged schematic plan view of the connection between the second middle frame and the first supporting portion in the embodiment of the disclosure
  • Fig. 3D is a schematic cross-sectional view taken along the line CC' shown in Fig. 3C.
  • the second supporting portion 321 of the second middle frame 320 (for example, the first portion 3216 of the second supporting portion 321) is fixedly connected to the first supporting portion 413 by the first fixing member 101, and the first fixing The member 101 extends in a direction perpendicular to the first supporting surface 4130 so that the first supporting portion 431 and the second middle frame 320 are fixedly connected in a direction perpendicular to the first supporting surface 4130.
  • connection of the second middle frame 320 to the bottom plate 410 of the back plate 400 in the embodiment of the present disclosure may include that the second middle frame is fixedly connected to the bottom plate along a direction perpendicular to the first supporting surface.
  • the second middle frame and the back plate are fixed in the direction perpendicular to the first supporting surface, so that the second middle frame and the back plate can be precisely positioned in the direction perpendicular to the first supporting surface, which can make the assembly Tolerance is minimized.
  • the way in which the second middle frame and the back plate are fixed in a direction perpendicular to the first supporting surface can prevent the first fixing member from affecting the curvature of the second middle frame, and can also make the second middle frame and the back plate have Better fixing and connecting effect, so that the second middle frame can match the curvature of the back plate, and thereby better guarantee the curvature of the second support portion.
  • the first fixing member 101 may be a structure such as nylon rivets, screws, etc., which is not limited in the embodiment of the present disclosure.
  • the second supporting portion 321 includes a first fixing hole 3210 penetrating the second supporting portion 321 in a direction perpendicular to the first supporting surface 4130, and the first supporting portion 413 of the bottom plate 410 includes a A fixing hole 3210 is opposite to the second fixing hole 4132.
  • the first fixing member 101 is located in the first fixing hole 3210 and the second fixing hole 4132.
  • the first fixing member 101 connects the first fixing member 101 through the first fixing hole 3210 of the second supporting portion 321 and the second fixing hole 4132 of the first supporting portion 413.
  • the second middle frame 320 is fixedly connected to the first supporting portion 413 of the bottom plate 410, and the fixing direction of the second middle frame 320 and the bottom plate 410 is a direction perpendicular to the first supporting surface.
  • the second fixing hole may be a through hole.
  • the first fixing member may be a nylon rivet or a screw.
  • the nylon rivet material is not easy to rust, will not be affected by the humidity of the external environment of the display device, and will not be placed in the display device. Abnormal noise occurs in a vibrating environment; the above-mentioned second fixing hole may also be a blind hole.
  • the first fixing member may be a screw.
  • the first fixing hole 3210 includes a first sub-fixing hole 3211 and a second sub-fixing hole 3212, and the first sub-fixing hole 3211 is located on the side of the second sub-fixing hole 3212 close to the display panel 100 .
  • the minimum size of the first sub-fixing hole 3211 is greater than the maximum size of the second sub-fixing hole 3212 so as to be formed at the connection position of the first sub-fixing hole 3211 and the second sub-fixing hole 3212
  • the step has a fixing surface 3214 facing one side of the display panel and parallel to the first supporting surface.
  • the first fixing member 101 is arranged in the first fixing hole to fix the second middle frame and the bottom plate.
  • the first fixing member 101 may include a first sub-fixing member 1011 and a second sub-fixing member 1012 connected to each other, and a third sub-fixing member 1013 located on the side of the second sub-fixing member 1012 away from the first sub-fixing member 1011 .
  • the first sub-fixing member 1011 and the second sub-fixing member 1012 may be an integral structure, and the third sub-fixing member 1013 and the second sub-fixing member 1012 are movably connected.
  • the first sub-fixing member 1011 is located in the first sub-fixing hole 3211
  • the second sub-fixing member 1012 is located in the second sub-fixing hole 3212 and the second fixing hole 4132 of the first supporting portion 413
  • the third sub-fixing member 1013 It is located on a side of the first supporting portion 413 away from the second supporting portion 321 to snap-connect the third sub-fixing member 1013 and the second sub-fixing member 1012 to fix the second middle frame and the bottom plate.
  • the size of the first sub-fixing member 1011 in the direction perpendicular to the first supporting surface is not greater than the depth of the first sub-fixing hole 3211, so as to ensure the flatness of a part of the surface of the second supporting portion for supporting the optical film.
  • the minimum size of the first sub-fixing member 1011 is greater than the maximum size of the second sub-fixing member 1012 and the maximum size of the second sub-fixing hole 3212, and the first sub-fixing member 1011
  • the maximum size of the first sub-fixing hole 3211 is smaller than the minimum size of the first sub-fixing hole 3211, so when the second sub-fixing member 1012 is disposed in the second sub-fixing hole 3212, the first sub-fixing member 1011 can be pressed onto the fixing surface 3214 (ie The first sub-fixing member is in contact with the fixing surface) to realize the fixing of the second middle frame 320 on the bottom plate 410 in a direction perpendicular to the first supporting surface 4130.
  • the first fixing hole and the through hole may be round holes, and along a direction parallel to the diameter of the round hole, the size of the first fixing hole is larger than the size of the first fixing member.
  • the diameter of the second sub-fixing hole 3212 may be 3.78 mm
  • the diameter of the second sub-fixing member 1012 may be 3.0 mm
  • the diameter of the second fixing hole 4132 may be 3.1 mm.
  • the embodiments of the present disclosure are not limited to this.
  • FIG. 3E is a schematic enlarged plan view of the connection between the second middle frame and the first supporting portion according to another example of the embodiment of the present disclosure.
  • the first fixing hole 3210 may be an elliptical hole, and the major axis of the elliptical hole is along the extension direction of the first side of the bottom wall, as long as the major axis dimension of the first fixing hole 3210 is larger than the first side.
  • the size of the fixing member 101 is sufficient.
  • the first fixing hole 3210 in this example may also include a first sub-fixing hole (not shown in the figure) and a second sub-fixing hole (not shown in the figure), and the first sub-fixing hole is located at the second sub-fixing hole.
  • the hole is near the side of the display panel.
  • the minimum size of the first sub-fixing hole is greater than the maximum size of the second sub-fixing hole to form a step at the connection position of the first sub-fixing hole and the second sub-fixing hole. It has a fixing surface facing one side of the display panel and parallel to the first supporting surface, and the first fixing member is arranged in the first fixing hole to fix the second middle frame and the bottom plate.
  • the first fixing member 101 may also include a first sub-fixing member (not shown in the figure) and a second sub-fixing member (not shown in the figure) connected to each other, and the second sub-fixing member is located far away from the first sub-fixing member.
  • the first sub-fixing member and the second sub-fixing member may be an integral structure.
  • the first sub-fixing member is located in the first sub-fixing hole
  • the second sub-fixing member is located in the second sub-fixing hole and the second fixing hole of the first support portion
  • the third sub-fixing member is located far from the first support portion.
  • One side of the two supporting parts is used to buckle and connect the third sub-fixing member and the second sub-fixing member to fix the second middle frame and the bottom plate.
  • the minimum size of the first sub-fixing member 1011 is greater than the maximum size of the second sub-fixing member 1012 and the maximum size of the second sub-fixing hole 3212, and the first sub-fixing member 1011
  • the maximum size of the first sub-fixing hole 3211 is smaller than the minimum size of the first sub-fixing hole 3211, so when the second sub-fixing member 1012 is disposed in the second sub-fixing hole 3212, the first sub-fixing member 1011 can be press-fitted on the fixing surface 3214 (ie The first sub-fixing member is in contact with the fixing surface) to realize the fixing of the second middle frame 320 on the bottom plate 410 in a direction perpendicular to the first supporting surface 4130.
  • the first sub-fixing hole may be an elliptical hole.
  • the size of the first sub-fixing member is smaller than the size of the first sub-fixing hole; along the short axis of the elliptical hole, the first sub-fixing hole
  • the size of the fixing member is approximately equal to the size of the first sub-fixing hole.
  • the second sub-fixing hole may be a circular hole or an elliptical hole.
  • the size of the second sub-fixing member is smaller than the second sub-fixing member along the long axis of the elliptical hole
  • the size of the fixing hole; along the minor axis of the elliptical hole, the size of the second sub-fixing member is approximately equal to the size of the second sub-fixing hole.
  • the minimum size of the first sub-fixing hole 3211 is larger than the maximum size of the first sub-fixing member 1011
  • the size of the second sub-fixing hole 3212 is larger than the size of the second sub-fixing member 1012, That is, the size of the first fixing hole is larger than the size of the first fixing member, so along the direction parallel to the first supporting surface 4130, there is a certain distance between the inner side of the first fixing hole 3210 and the outer edge of the first fixing member 101 , The first fixing member 101 is not in contact with the inner side of the first fixing hole 3210.
  • the aforementioned spacing provides space for expansion and contraction of the second middle frame, so as to avoid defects such as partial bulging of the second support portion.
  • the second sub-fixing member 1012 penetrates through the second sub-fixing hole 3212 and the second fixing hole in the first support portion 413, and can be combined with the first sub-fixing through the snap connection between the second sub-fixing member 1012 and the third sub-fixing member
  • the member 1011 is pressed against the fixing surface to realize a fixed connection between the second middle frame and the bottom plate in a direction perpendicular to the first supporting surface.
  • FIG. 3F is a schematic side view of the second middle frame shown in FIG. 3A.
  • the shape of a part of the supporting portion fixedly connected to the second supporting portion 321 and the first arc-shaped strip portion 4131 is an arc.
  • the partially arc-shaped support portion and the first arc-shaped strip portion 4131 are fixedly connected by a first fixing member 101 extending in a direction perpendicular to the first support surface 4130, and along the extending direction of the arc-shaped support portion, the first The size of the fixing member 101 is smaller than the size of the first sub-fixing hole so that the first fixing member 101 can move in the direction parallel to the first supporting surface 4130 in the first fixing hole 3210 relative to the second middle frame 320.
  • the second middle frame is used to support the optical film, and the second middle frame is fixedly connected to the bottom plate of the back plate, rather than the second middle frame is fixedly connected to the side plate of the back plate. Therefore, when the partially arc-shaped support portion of the second support portion undergoes thermal expansion and contraction, the distance remaining between the first sub-fixing hole and the first fixing member can prevent the arc-shaped support around the first fixing member.
  • the convex hull appears on the side facing the display panel, which seriously affects the curvature of the second middle frame, and also affects the optical film.
  • the first fixing hole in the second middle frame is only a through hole penetrated by the first fixing member, rather than a threaded hole for engaging and connecting with the first fixing member (with the first fixing member Take the screw as an example), so even if the expansion and contraction displacement of the arc-shaped support around the first fixing member is large, the obstruction of the first fixing member may cause the fixing hole to become larger, and there will be no failure of the fixing hole. . Therefore, the present disclosure adopts the first fixing member extending in a direction perpendicular to the first supporting surface to fix the bottom plate and the second middle frame, which can prevent the first fixing member from affecting the curvature of the second supporting portion, so as to better To ensure the curvature of the second support part.
  • the bottom wall may be used to maintain a predetermined curvature of the arc-shaped portion in the second support portion.
  • the strip portion corresponding to the second side in the ring-shaped first support portion is also non-arc-shaped, and the second support portion provided on the strip portion It is also non-curved.
  • the second middle frame does not have a large curvature.
  • the second middle frame of the second middle frame The supporting portion is bent according to a shape corresponding to the curvature of the first supporting portion.
  • the second middle frame 320 further includes an extension portion 322 connected to the second support portion 321, the extension portion 322 extends in a direction close to the bottom wall 411, and the extension portion 322 is away from the second support portion The end of the 321 presses against the periphery of the reflective sheet 340.
  • the extension portion included in the second middle frame is pressed against the reflective sheet provided on the bottom wall to further The second middle frame is fixed to prevent the second support portion from turning over and ensure the stability of the second middle frame.
  • extension part presses against the reflective sheet, which means that the extension part is in contact with the reflective sheet, so that while the bottom wall supports the extension part, the extension part fixes the reflective sheet and prevents the periphery of the reflective sheet.
  • Figures 1A-3F schematically show that the end of the extension part away from the second supporting part is pressed against the reflector sheet, and the extension part in the actual product is in contact with the surface of the reflector sheet.
  • the edge of the extension portion 322 connected to the second support portion 321 is located outside the edge of the extension portion 322 pressed against the reflective sheet 340, and the extension portion 322 is connected to the second support portion 321.
  • the edge is located at the side of the extension portion 322 pressing the reflective sheet 340 close to the display panel 100, so that the inner surface of the extension portion 322 is formed as an inclined surface, and the inclined surface functions as a reflective surface, such as the reflectivity of the inclined surface
  • the reflectivity of the reflector is not less than that of the reflector, so as to improve the utilization rate of the light emitted by the light source assembly 330 and improve the light efficiency.
  • the reflective film is pressed to form a light mixing space between the light source assembly and the optical film.
  • the material of the reflective sheet 340 has a flexible characteristic, and it is arranged on the curved bottom wall 411 to form a curved reflective sheet with a certain curvature.
  • the second middle frame 320 is made of a material that has a certain hardness and is also flexible.
  • the material of the second middle frame 320 may be a material mixed with 10% glass fiber in polycarbonate (PC), so as to ensure that the second middle frame has a predetermined hardness.
  • FIG. 4A is a schematic diagram of a partial plan structure of the second middle frame and the optical film shown in FIG. 3A after being assembled
  • FIG. 4B is a schematic diagram of a plan structure of the optical film.
  • the second support portion 321 of the second middle frame 320 is provided with a plurality of protrusions 3213 on the side facing the display panel.
  • At least one film (for example, the first The edge of a diffuser sheet and a second diffuser sheet) includes a plurality of openings 3200, and the plurality of openings 3200 correspond to the plurality of protrusions 3213 one-to-one so that at least one film layer of the optical film 310 excluding the diffuser plate is sleeved on the second
  • the middle frame 320 that is, the plurality of openings 3200 are set on the plurality of protrusions 3213 in one set, so that at least one film layer of the optical film 310 excluding the diffuser plate is sleeved on the second middle frame 320.
  • the second middle frame is used to support and fix the optical film (for example, the diffuser plate is pasted on the second supporting surface). Since the thermal expansion coefficient between the optical film and the material of the second middle frame is close, when the two undergo thermal expansion and contraction, the bonding effect of the edge of the optical film and the second middle frame will not be affected. Thereby ensuring the curvature of the optical film.
  • the second middle frame in the embodiments of the present disclosure has a better supporting effect on the optical film, and the setting of the light supporting pillar can be omitted. Therefore, when the curved display device is used in a vehicle, such as a car, it is also Can improve vibration reliability.
  • FIG. 5A is a schematic plan view of the strip light board in the light source assembly shown in FIGS. 1A and 1B
  • FIG. 5B is a plan view structure view of the adapter plate connected to the strip light board
  • FIG. 5C is the backplane and Schematic diagram of light source assembly assembly.
  • the light source assembly 330 included in the backlight assembly includes a plurality of strip-shaped light boards 3310, and an array of light-emitting diodes 331 are arranged on each strip-shaped light board 3310.
  • the reflective sheet 340 is located on the light-emitting surface of the light source assembly 330 and exposes the light-emitting diodes 331, that is, the reflective sheet is located on the side of the light source assembly facing the display panel, and includes multiple openings for exposing multiple light-emitting diodes, so that the light emitted by the light-emitting diodes Will not be blocked by the reflector.
  • the strip light board 3310 includes positioning holes 3312, and the bottom wall of the back plate is provided with positioning protrusions corresponding to the positioning holes 3312 on the side facing the light source assembly 330.
  • the positioning holes 3312 and the positioning holes 3312 The protrusions are engaged (for example, the positioning holes are sleeved on the positioning protrusions) to realize the positioning of the strip-shaped light board.
  • the side of the strip light board 3310 facing the bottom wall may be provided with double-sided tape.
  • the strip light board 3310 is positioned through the positioning holes 3312 and is fixedly connected to the bottom wall through the double-sided tape.
  • the strip light board 3310 further includes a third fixing hole 3313, and the reflector 340 on the side of the strip light board 3310 away from the bottom wall can pass through the third fixing hole 3313 and the bottom wall.
  • the connection is fixed, so that the strip light board 3310 is further fixed.
  • the reflective sheet 340 includes a fourth fixing hole 341 corresponding to the third fixing hole 3313. Nylon rivets are used to penetrate the fourth fixing hole and the third fixing hole to connect the reflective sheet 340 to the strip shape.
  • the light boards 3310 are all fixed on the back plate.
  • each strip light board 3310 is parallel to the second side 4112, that is, the extending direction of the strip light board 3310 intersects the extending direction of the arc-shaped first side 4111, so that To prevent the curved bottom wall of the backplane from being deformed or damaged due to the stress of the strip light panel being different from that of the strip light panel.
  • a plurality of strip-shaped light boards 3310 may be arranged along the extending direction of the first side 4111, but it is not limited to this, and a plurality of strip-shaped light boards may also be arranged in an array.
  • each strip light board 3310 further includes an adapter board connector 3311.
  • the backlight assembly further includes at least one strip-shaped adapter plate 350, and is located on the side of the bottom wall facing the display panel.
  • Each adapter board 350 includes a plurality of light bar connectors 351 to connect to the adapter board connectors 3311 of the plurality of strip light boards 3310. That is, each adapter board 350 is connected to a plurality of strip-shaped light boards 3310.
  • each adapter plate 350 extends along the extending direction of the first side 4111, and the plurality of adapter plates 350 are arranged along the extending direction of the first side 4111 and along the extending direction of the second side 4112 of the bottom wall. All 350 are located on one side of the light source assembly 330.
  • the material of the adapter plate has flexible characteristics, and an arc-shaped adapter plate with a certain curvature is formed by setting it on the curved bottom wall 411.
  • the edge of the reflective sheet 340 extending along the extending direction of the first side of the bottom wall may be provided with a slot, and the edge provided with the slot corresponds to the adapter plate, and the slot is used to avoid the adapter plate connector 3311 and the lamp. The position where the strip connector 351 is connected.
  • the adapter plate 350 is also provided with a adapter plate fixing hole 353 to achieve a fixed connection with the bottom wall.
  • FIG. 5D is a plan view of the side of the back plate away from the display panel.
  • the adapter board 350 further includes a driving connector 352 to connect the strip light board 3310 to the light source driving board 700 located on the side of the backplane away from the display panel.
  • the driving connector 352 may be connected to the light source driving board 700 through a flexible flat cable (FFC) 701.
  • FFC flexible flat cable
  • At least two strip light boards 3310 connected to each adapter board 350 can be connected to the adapter board 350 to reduce the number of strip light board output lines, thereby reducing the number of strip light board output ports.
  • the purpose is to reduce the number of drive connectors 352.
  • one adapter board 350 may be provided with eight light bar connectors 351 to connect with the adapter board connectors 3311 of the eight bar light boards 3310 to reduce the number of strip light board output ports to three. That is, the adapter board 350 connected to the eight strip light boards 3310 can be provided with three drive connectors 352 to serve as the output ports of the eight strip light boards 3310, thereby reducing the output ports of the strip light boards.
  • the embodiment of the present disclosure schematically shows the case of reducing the output port interfaces of the eight light bars to 3, but it is not limited to this, and it can also be 1, 2, 4, etc., as long as the number of light bar output ports is It is less than the number of light bars.
  • Figure 5C schematically shows a situation where two adapter boards are connected to sixteen strip-shaped light boards. The embodiment of the present disclosure does not limit the number of the adapter boards connected to the strip-shaped light boards, and can be set according to actual product requirements.
  • FIG. 5E is a partial side view of the connecting portion of the back plate shown in FIG. 1A.
  • the connecting portion 412 and one of the two first sides 4111 of the bottom wall 411 are provided with a strip-shaped outlet hole 4120, and the long axis of the strip-shaped outlet hole 4120 is parallel to the first side 4111.
  • the flexible cable 701 passes through the aforementioned strip-shaped outlet hole 4120 to realize the connection between the light source assembly 330 and the light source driving board 700.
  • the connecting portion is provided with a strip-shaped outlet hole whose long axis is parallel to the first side, which can reduce the influence of the outlet hole on the strength of the connecting portion.
  • the drive connector 352 of the adapter board 350 can be connected to the flexible flat cable 701, which passes through the bar-shaped outlet hole 4120 provided on the connecting portion 412, and extends to the side of the bottom wall 411 away from the display panel , To connect with the light source driving board 700 on the back of the display device.
  • the connecting portion is provided with a strip-shaped outlet hole, so that the light wire connecting the light source assembly and the light source driving board passes through the connecting portion instead of the bottom wall, which can reduce the influence of the outlet hole on the strength and curvature of the bottom wall .
  • the light source driving board 700 may be connected to an external power source to drive each light-emitting diode by a voltage signal such as partition and/or time sharing.
  • the light source driving board 700 may be connected by signal lines such as power lines, clock lines, input/output lines (I/O lines), etc. to control the working timing of the light source driving board 700.
  • the light-emitting diodes can be controlled in zones so that the display device can achieve the effects of good contrast and high brightness.
  • the number of light-emitting diodes needs to be set more. If each strip light board is connected to the light source driving board on the side of the backplane far away from the display panel through a signal line, you need to Opening a plurality of connection vias on the bottom wall of the backplane will affect the strength of the bottom wall.
  • the embodiment of the present disclosure can reduce the number of output ports of the strip light board by arranging the adapter plates corresponding to the plurality of strip light boards, thereby reducing the number of openings on the back board to ensure the strength of the back board.
  • a display device including: a display panel; a backlight assembly, located on the non-display side of the display panel, including a plurality of strip light panels, each The strip-shaped light board extends in the first direction; a back board, at least part of the back board is located on a side of the backlight assembly away from the display panel, wherein the back board includes a bottom wall and an edge with the bottom wall Connected side walls; the plurality of strip-shaped lamp panels are located on the side of the bottom wall facing the display panel, and the backlight assembly further includes at least one located on the side of the bottom wall facing the display panel
  • the adapter plate extends in a second direction that intersects the first direction, and each of the adapter plates connects at least two of the strip-shaped light boards to provide driving signals for them.
  • each of the strip-shaped light boards includes an adapter board connector
  • each of the adapter boards includes a plurality of light bar connectors to respectively connect the rotation of the plurality of strip-shaped light boards. Board connector.
  • the bottom wall includes a first bottom edge extending in the first direction and a second bottom edge extending in the second direction.
  • the connecting part of the second bottom side is provided with an outlet hole;
  • the display device further includes a light source driving board, which is located on the side of the bottom wall away from the display panel, and the adapter plate passes through the outlet hole The wire is connected with the light source driving board.
  • the bottom wall has a curved surface structure
  • the second bottom side is a curved side
  • the outlet hole is a strip-shaped outlet hole, and a long axis of the strip-shaped outlet hole is parallel to the second bottom side.
  • the backlight assembly further includes an optical film and a middle frame.
  • the middle frame is located on a side of the optical film away from the display panel and is configured to support the optical film.
  • the side wall provided with the outlet hole in the technical solution is the connecting portion 412 in the embodiment shown in FIG. 5E; the first bottom edge of the bottom wall in the technical solution is the implementation shown in FIG. 2A
  • the second side 4112 and the second bottom side are the first side 4111 in the embodiment shown in FIG. 2A; the middle frame in this technical solution is the second middle frame 320 in the embodiment shown in FIG. 1A.
  • FIG. 6A is a schematic partial cross-sectional view of the assembly of the first middle frame, the backlight assembly, and the back plate.
  • the side of the first middle frame 200 away from the display panel 100 is pressed against the optical film 310, that is, the surface of the first middle frame 200 away from the display panel 100 and the optical film
  • the optical film 310 is contacted to press and fix the optical film 310 to ensure the flatness of the optical film 310.
  • Fig. 6B is a schematic plan view of the first middle frame shown in Figs. 1A and 1B
  • Fig. 6C is a partial enlarged schematic view at position D in Fig. 6B
  • Fig. 6D is a schematic side view of the first middle frame in Fig. 6C
  • the first middle frame 200 may be a continuous ring structure surrounding the display panel 100 in a circle.
  • the first middle frame 200 includes an outer frame 210 surrounding the display panel 100. At least part of the outer frame 210 is located outside the side plate 420 of the back plate 400 and is fixedly connected to the side plate 420.
  • a part of the outer frame of the first middle frame may be snap-connected to the side plate to realize the positioning of the first middle frame
  • another part of the outer frame of the first middle frame may be fixedly connected to the side plate to realize the fixation of the position.
  • FIG. 6D shows the card and the hole 2020 on the outer frame of the first middle frame
  • the side plate of the back plate is also provided with cards and protrusions corresponding to the card and the hole 2020 to be engaged with the card and the hole.
  • the coarse positioning of the first middle frame That is, the cards and holes of the outer frame are sleeved on the cards and protrusions on the side plate to realize the rough positioning of the first middle frame.
  • the first middle frame may be supported by the side panels of the back panel.
  • the outer frame of the first middle frame includes a connecting hole 2021
  • the side plate of the back plate includes screw holes opposite to the connecting hole 2021 of the outer frame. Screws can be used to penetrate the connecting holes and screw holes, and the screws pass through the connecting holes 2021 of the outer frame to engage with the screw holes of the side plate, so that the first middle frame and the side plate of the back plate are fixedly connected, and the fixing direction is vertical In the direction of the side panel.
  • the connecting hole in the first middle frame (the connecting hole 2021 shown in FIG.
  • 6D is only a through hole penetrated by a screw, not a threaded hole for engaging and connecting with the screw, so even if the screw is surrounded by The expansion and contraction displacement generated by the first middle frame is relatively large, and the obstruction of the screw may cause the deformation of the connecting hole to be larger, and there will be no failure of the connecting hole.
  • the material of the first middle frame 200 may be a light-shielding material to achieve a light-shielding effect for the edge area of the display panel 100.
  • the material of the first middle frame 200 may be a flexible material to bend with other structures.
  • the material of the first middle frame 200 may be polycarbonate (PC).
  • the hardness of the material of the second middle frame 320 in the embodiment of the present disclosure is greater than the hardness of the material of the first middle frame 200.
  • the hardness of the two materials is different.
  • the material selected for the first middle frame has a low hardness, so that the curvature of the first middle frame is determined by the curvature of the front frame on the side away from the display panel. Even when deformation such as thermal expansion and contraction occurs, the front frame can be compressed with the first middle frame to minimize the amount of change in the curvature of the first middle frame.
  • the thickness of the first middle frame provided by the embodiment of the present disclosure is relatively thin, such as 0.8 mm, which can improve its curved surface forming rate.
  • the second middle frame is located on the bottom plate of the back plate. The material with greater hardness is used to support the optical film, and it can be stably set on the bottom plate to prevent the second middle frame from being caused by soft material. The necessary deformation to ensure the curvature accuracy of the optical film.
  • the first middle frame and the second middle frame provided in the display device provided by the embodiments of the present disclosure are separated from each other, which can ensure the curvature accuracy of each middle frame after the curved surface is formed; and the first middle frame and the second middle frame can pass through It is formed of different materials and formed into different thicknesses to ensure a good fit with the curvatures of other structures, so as to reduce assembly tolerances, thereby improving the curvature accuracy of the display device.
  • the first middle frame 200 includes a third support portion 230 configured to carry the display panel 100, and the third support portion 230 includes a second arc corresponding to the first arc-shaped strip portion 4131.
  • the curved strip portion 220, the second arc-shaped strip portion 220 and the first arc-shaped strip portion 4131 have the same bending direction.
  • by setting the first middle frame supporting the display panel as a curved surface structure it can be ensured that the display panel has a predetermined curvature.
  • the third supporting portion 230 includes two second arc-shaped strip portions 220 opposite to each other, and the two second arc-shaped strip portions 220 correspond to the two first sides of the bottom wall.
  • the third support portion may also include two other arc-shaped strip portions opposite to each other; when the second side of the bottom wall is a straight side, the third support portion includes The other two strips facing each other are linear strips, which are not limited in the embodiment of the present disclosure.
  • the third supporting portion 230 has a third supporting surface facing the display panel 100, and the third supporting surface is provided with a buffer 102 that can release the display panel when the display device is in a vibrating state.
  • the force between the first middle frame and the first middle frame can prevent the display panel 100 from being damaged due to external force.
  • the buffer member may be a flexible material such as foam or rubber.
  • the inner side of the outer frame 210 wrapping the sides of the display panel 100 may also be provided with a buffer 102. Therefore, when the side of the display panel is placed facing the ground, the inner side of the first middle frame supports the display panel, and the buffer provided on the inner side of the first middle frame can protect the display panel .
  • one edge of the outer frame 210 of the first middle frame 200 may be provided with a side wall retaining wall 202 and a side wall opening 201 located between adjacent side wall retaining walls 202.
  • the other edges of the outer frame 210 of the 200 may be a continuous structure including connecting holes for fixing with the back plate.
  • the outer frame 210 where the side wall retaining wall 202 is located may be an arc-shaped outer frame corresponding to the first arc-shaped strip portion, and the side wall retaining wall 202 is used to face the ground on the side of the display panel facing the side wall retaining wall 202 When placed, it supports the display panel.
  • the buffer provided on the inner side of the outer frame may be a buffer provided on the inner panel of the side wall retaining wall.
  • the display device further includes a circuit board (not shown) located on a side surface of the first support part away from the display panel and located outside the connecting part, and the circuit board passes through a side wall provided from the outer frame of the first middle frame.
  • the lead wires are connected to the display panel.
  • FIG. 7A is a schematic diagram of the plan structure of the front frame shown in FIGS. 1A and 1B
  • FIG. 7B is a schematic diagram of the structure of the side wall of the front frame of the front frame shown in FIG. 7A
  • FIG. 7C is the position E in the side wall of the front frame
  • Fig. 7D is a partial schematic diagram of the connection between the front frame and the back plate.
  • the front frame 600 is located on the side of the first middle frame 200 away from the backlight assembly 300, and is configured to press the display panel 100 to fix the display panel 100 on the first middle frame 200. That is, the front frame contacts the display panel to fix the display panel on the first middle frame.
  • the front frame 600 may be a continuous ring structure surrounding the display panel 100.
  • the material of the front frame 600 may be an electro-galvanized steel sheet with a thickness of 0.6-0.8 mm, and the curvature of the front frame may be ensured by stamping.
  • the back plate and the front frame can be made by a die-casting molding process. After molding, the material rebound and dehydration rate are less than the stamping molding process, and the statistical tolerance curvature can be ⁇ 1mm.
  • the front frame 600 may include a third arc-shaped strip portion 610 located on a side of the second arc-shaped strip portion 220 away from the first arc-shaped strip portion.
  • the above-mentioned third arc-shaped strip portion is a strip-shaped portion corresponding to the first side of the bottom wall.
  • the curvature of the third arc-shaped strip portion of the front frame is set to determine the display panel and the first side. The curvature of the middle frame.
  • the curvature of the second arc-shaped strip of the first middle frame is determined by the curvature of the third arc-shaped strip of the front frame.
  • the material of the first middle frame in the embodiments of the present disclosure is made of flexible materials to bend with the bending of the front frame, that is, the curvature of the first middle frame is determined by the curvature of the front frame on the side away from the display panel, which can be better Cooperate with the front frame to ensure the curvature of the display panel on it.
  • the curvature of the display panel is determined by the curvatures of the front frame and the first middle frame.
  • the front frame 600 includes a front frame side wall 620 located on the side of the outer frame 210 of the first middle frame 200 away from the side plate 420.
  • the front frame side wall 620 can be connected to the side of the back plate by screws.
  • the board is fixed.
  • the front frame side wall 620 includes an elongated hole 6200 so that the front frame side wall 620 is fixedly connected to the side plate 420 by a second fixing member 630 passing through the elongated hole 6200.
  • the short axis of the elongated hole 6200 is perpendicular to the first supporting surface to reduce the curvature tolerance after the front frame and the back plate are locked, that is, to reduce the curvature influence value, while using the long axis to ensure assembly deviation and improve assembly rate.
  • the screw holes of the back plate may be round holes with a diameter of 2.5 mm.
  • the screw hole on the side wall of the front frame is an elliptical hole, the size of the long axis is 4.4mm, and the size of the short axis is 3.2mm, the curvature tolerance of the front frame is ⁇ 0.7mm.
  • the size of the second fixing member matches the size of the short axis to achieve precise positioning of the front frame. That is, in the direction of the minor axis, the size of the second fixing member is approximately equal to the size of the minor axis.
  • the size difference between the second fixing member and the long axis can be between 0.81 mm and 0.96 mm; along the short axis direction, the size difference between the second fixing member and the short axis can be between 0.31 mm and 0.46 mm. between.
  • the precise positioning in the embodiments of the present disclosure means that the dimensional difference between the fixing part and the fixing hole is an assembly tolerance, and the assembly tolerance is a tolerance that exists reasonably to facilitate the installation of the fixing part into the fixing hole.
  • the size of the fixing member and the size of the fixing hole cannot be exactly the same.
  • the size of the fixing hole must exceed the fixing member, for example, more than 0.1-0.4 mm.
  • Coarse positioning means that the size difference between the fixing part and the fixing hole is greater than the assembly tolerance, so that the fixing part and the fixing hole can have a certain relative displacement in at least one direction after being fixed.
  • the fixing hole and The fixed part can move relatively in at least one direction, and the size difference between the fixed part and the fixed hole will be set to be larger than the assembly tolerance, for example, the assembly tolerance is 0.1 ⁇ 0.5mm.
  • the fixed part and the fixed The size difference between the holes can be set to 0.81 ⁇ 0.96mm.
  • FIG. 8 is a schematic diagram of a curvature tolerance relationship of a display device according to an embodiment of the present disclosure.
  • the different structures of the display device in the embodiments of the present disclosure have different curvatures.
  • each assembly surface In order to ensure the assemblability, each assembly surface must maintain the same radius of curvature.
  • the radius of curvature, R0 refers to the radius of curvature of the reference layer, and h refers to the height difference between the reference layer and the X layer.
  • the radius of curvature of the imaginary plane between the array substrate and the opposite substrate in the display panel is defined as the radius of curvature R0 of the curved display device.
  • the radius of curvature of the upper surface of the display panel away from the backplane can also be defined as R0.
  • the curvature of the display device provided by the embodiment of the present disclosure can be 4200R ⁇ 4.5%R, and 4200R refers to the radius of curvature of the display panel.
  • the chord height tolerance of the display device can be ⁇ 2mm
  • the chord height of the display device can be ⁇ 1mm.
  • the tolerance of the front frame manufactured by stamping is d1 ⁇ 0.2mm
  • the tolerance of the first middle frame manufactured by injection molding is d2 ⁇ 0.05mm
  • the gap between the first middle frame and the back plate is 0.2mm.
  • the tolerance of the back plate made by stamping method is d3 ⁇ 0.3mm, the curvature tolerance of the back plate is ⁇ 0.7mm, and the deviation tolerance from the center of the fixed hole of the back plate and the front frame to the surface of the bottom wall of the back plate away from the display panel It is d4 ⁇ 0.3mm, the screw diameter production tolerance is d7 ⁇ 0.05mm, the gap between the screw and the edge of the front frame positioning hole is 0.6mm, the offset of the center position of the front frame positioning hole is d6 ⁇ 0.05mm, and the center of the front frame positioning hole is to the front frame
  • the surface position deviation tolerance is d5 ⁇ 0.2mm, and therefore, the curvature tolerance after the above-mentioned tolerances are accumulated is 2.65mm.
  • the statistical tolerance is 1.67 mm. Therefore, it can be obtained that the curvature accuracy of the display device provided by the embodiment of the present disclosure can achieve 4.5%R.
  • the curved display device provided by the embodiment of the present disclosure may be an in-vehicle curved display device applied to a car.
  • Another embodiment of the present disclosure provides a vehicle including any of the above-mentioned curved display devices.
  • vehicles may include vehicles, airplanes, ships, subways, and other vehicles that carry people or transport goods.
  • the motor vehicle may be a vehicle such as a car or a truck.

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Abstract

一种曲面显示装置以及交通工具,曲面显示装置包括:显示面板(100);第一中框(200),位于显示面板(100)的非显示侧,且被配置为承载显示面板(100);背光组件(300),位于第一中框(200)远离显示面板(100)的一侧,且包括光学膜片(310)以及第二中框(320),第二中框(320)位于光学膜片(310)远离显示面板(100)的一侧且被配置为支撑光学膜片(310);以及背板(400),位于背光组件(300)远离显示面板(100)的一侧。背板(400)包括底板(410)以及设置在底板(410)边缘的侧板(420),第二中框(320)连接到底板(410)上。通过在曲面显示装置中设置两个中框,并将第二中框(320)固定在背板(400)的底板(410)上以提高显示装置的曲率精度。

Description

曲面显示装置以及交通工具 技术领域
本公开至少一个实施例涉及一种曲面显示装置以及交通工具。
背景技术
曲面显示装置能够形成具有曲面形状的显示区域,在曲面显示装置应用于大尺寸显示装置时,可以减少用户观看显示区域中部的可视角度与观看显示区域边缘的可视角度之间的差异,以实现较佳的显示效果。
发明内容
本公开的至少一实施例提供一种曲面显示装置以及交通工具。该曲面显示装置包括显示面板、第一中框、背光组件以及背板。第一中框位于所述显示面板的非显示侧,且被配置为承载所述显示面板;背光组件,位于所述第一中框远离所述显示面板的一侧,包括光学膜片以及第二中框,所述第二中框位于所述光学膜片远离所述显示面板的一侧且被配置为支撑所述光学膜片;所述背板的至少部分位于所述背光组件远离所述显示面板的一侧。所述背板包括底板以及设置在所述底板边缘的侧板,所述第二中框连接到所述底板上。
在一些示例中,所述底板包括底壁以及位于所述底壁边缘外侧的第一支撑部,所述第一支撑部位于所述底壁面向所述显示面板的一侧,所述第一支撑部具有面向所述显示面板的第一支撑面,所述第二中框包括第二支撑部,所述第二支撑部具有面向所述显示面板的第二支撑面以支撑所述光学膜片,所述第二支撑部设置在所述第一支撑部的第一支撑面上。
在一些示例中,所述第二中框的所述第二支撑部通过第一固定件与所述第一支撑部在沿垂直于所述第一支撑面的方向彼此固定。
在一些示例中,所述第二支撑部包括沿垂直于所述第一支撑面的方向贯穿所述第二支撑部的固定孔,所述第一固定件位于所述固定孔中,且沿平行于所述第一支撑面的方向,所述固定孔的尺寸大于所述第一固定件的尺寸以使所述第一固定件与所述固定孔的内侧壁之间具有间隙。
在一些示例中,所述第二中框的材料的硬度比所述第一中框的材料的硬度 大。
在一些示例中,所述第一中框的远离所述显示面板的一侧抵压在所述光学膜片上。
在一些示例中,所述底壁包括彼此相对的两条第一边,所述第一边为弧形边;所述第一支撑部包括与所述第一边对应的第一弧形条状部,所述第一弧形条状部的弯曲方向与所述第一边的弯曲方向相同。
在一些示例中,所述固定孔为圆孔,沿平行于所述圆孔的直径的方向,所述固定孔的尺寸大于所述第一固定件的尺寸。
在一些示例中,所述固定孔为椭圆形孔,所述椭圆形孔的长轴方向平行于所述第一边,且沿平行于所述第一边的方向,所述固定孔的尺寸大于所述第一固定件的尺寸。
在一些示例中,所述底板还包括连接所述底壁的边缘与所述第一支撑部的连接部,所述第一支撑部从所述连接部的边缘向外延伸。
在一些示例中,所述背光组件还包括光源组件以及反射片,所述光源组件包括阵列排布的发光二极管,所述反射片位于所述光源组件的发光面且露出所述发光二极管,所述光源组件设置于所述底壁靠近所述显示面板的一侧上。
在一些示例中,所述第二中框还包括与所述第二支撑部连接且部分位于所述背板的连接部内侧的延伸部,所述延伸部向靠近所述底壁的方向延伸;所述延伸部远离所述第二支撑部的端部抵压所述反射片的四周。
在一些示例中,所述延伸部与所述第二支撑部连接的边缘位于所述延伸部抵压在所述反射片上的边缘的外侧,且所述延伸部与所述第二支撑部连接的边缘位于所述延伸部抵压所述反射片的端部靠近所述显示面板的一侧,从而使得所述延伸部的内侧表面形成为倾斜表面,且所述倾斜表面的反射率不小于所述反射片的反射率。
在一些示例中,所述底壁包括彼此相对的两条第二边,所述第二边为直边,所述发光二极管位于多个条状灯板上,且每个所述条状灯板的延伸方向平行于所述第二边。
在一些示例中,所述背光组件还包括位于所述底壁面向所述显示面板的一侧的至少一个转接板,每个所述转接板连接至少两个所述条状灯板以为其提供驱动信号。
在一些示例中,所述底壁还包括彼此相对的两条第一边,所述第一边为弧 形边;所述连接部设置有条形出线孔,所述连接部设置有所述条形出线孔的部分与所述底壁的靠近所述转接板的所述第一边相接,所述条形出线孔的长轴与所述第一边平行。
在一些示例中,曲面显示装置还包括光源驱动板,位于所述底壁远离所述显示面板的一侧,所述转接板通过从所述条形出线孔引出的导线与所述光源驱动板连接。
在一些示例中,所述底壁远离所述显示面板的一侧设置有弧形加强筋,所述弧形加强筋的延伸方向与所述第一边的延伸方向相同,且所述弧形加强筋的强度大于所述底壁的强度以防止所述底壁变形。
在一些示例中,所述侧板从所述第一支撑部的外侧边缘朝向所述显示面板延伸,所述第一中框包括围绕所述显示面板的外框,所述外框的部分位于所述侧板外侧,且与所述侧板固定连接。
在一些示例中,所述第一中框包括被配置为承载所述显示面板的第三支撑部,所述第三支撑部具有面向所述显示面板的第三支撑面,所述第三支撑面以及所述外框中包裹所述显示面板的内侧均设置有缓冲件。
在一些示例中,曲面显示装置还包括:前框,位于所述第一中框远离所述背光组件的一侧,且被配置为抵压所述显示面板以及所述第一中框的外框远离所述底板一侧的表面以保证所述显示面板与所述第一中框的曲率。
在一些示例中,所述前框包括位于所述外框远离所述侧板的前框侧壁,所述前框侧壁包括长条形孔,以使所述前框侧壁通过贯穿所述长条形孔的第二固定件固定连接至所述侧板,所述长条形孔的短轴大致垂直于所述第一支撑面,且沿所述短轴的延伸方向,所述第二固定件的尺寸与所述短轴的尺寸大致相等。
在一些示例中,所述显示面板包括的四条边一一连接以形成四个角,所述侧板围绕所述显示面板的四个角中的至少一个的位置处面向所述第三支撑面的一侧设置有凹槽。
在一些示例中,所述第一中框的材料为遮光材料。
在一些示例中,所述曲面显示装置为车载曲面显示装置。
本公开至少一实施例提供一种交通工具,包括上述曲面显示装置。
附图说明
为了更清楚地说明本公开实施例的技术方案,下面将对实施例的附图作简单地介绍,显而易见地,下面描述中的附图仅仅涉及本公开的一些实施例,而非对本公开的限制。
图1A为根据本公开一实施例提供的曲面显示装置的分解示意图;
图1B为图1A所示的曲面显示装置处于装配状态的截面图;
图2A为图1A所示的背板的平面结构示意图;
图2B为沿图2A所示的AA线所截的截面示意图;
图2C为图2A中的B位置处的放大示意图;
图3A为图1A所示的背板与背光组件组装的结构图的第一截面图;
图3B为图1A所示的背板与背光组件组装的结构的第二截面图;
图3C为本公开实施例的一示例中第二中框与第一支撑部连接的平面放大示意图;
图3D为沿图3C所示的CC’线所截的截面示意图;
图3E为本公开实施例的另一示例中第二中框与第一支撑部连接的平面放大示意图;
图3F为图3A所示的第二中框的侧面结构示意图;
图4A为图3A所示的第二中框与光学膜片组装后的局部平面结构示意图;
图4B为图4A所示的光学膜片的平面结构示意图;
图5A为图1A和图1B所示的光源组件中的条状灯板的平面结构示意图;
图5B为与图5A所示的条状灯板连接的转接板的平面结构示意图;
图5C为图1A所示的曲面显示装置中背板与光源组件组装示意图;
图5D为图1A所示的曲面显示装置中背板远离显示面板一侧平面图;
图5E为图1A所示的背板的连接部的局部侧面示意图;
图6A为图1A所示的曲面显示装置中第一中框、背光组件以及背板组装的局部截面示意图;
图6B为图1A所示的第一中框的平面结构示意图;
图6C为图6B中的D位置处的放大示意图;
图6D为图6C中的第一中框的侧面示意图;
图7A为图1A所示的前框的平面结构示意图;
图7B为图7A所示的前框的前框侧壁的结构示意图;
图7C为图7A所示的前框侧壁中的E位置处的放大示意图;
图7D为图1A所示的前框与背板连接的局部结构示意图;
图8为根据本公开实施例提供的曲面显示装置的曲率公差关系示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚,下面将结合本公开实施例的附图,对本公开实施例的技术方案进行清楚、完整地描述。显然,所描述的实施例是本公开的一部分实施例,而不是全部的实施例。基于所描述的本公开的实施例,本领域普通技术人员在无需创造性劳动的前提下所获得的所有其它实施例,都属于本公开保护的范围。
除非另外定义,本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同,而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接,而是可以包括电性的连接,不管是直接的还是间接的。
本公开实施例中使用的“平行”、“垂直”以及“相同”等特征均包括严格意义的“平行”、“垂直”、“相同”等特征,以及“大致平行”、“大致垂直”、“大致相同”等包含一定误差的情况,考虑到被讨论的测量和与特定量的测量相关的误差(也就是,测量***的限制),表示在本领域的普通技术人员所确定的对于特定值的可接受的偏差范围内。例如,“大致”能够表示在一个或多个标准偏差内,或者在所述值的10%或者5%内。
在研究中,本申请的发明人发现:一种曲面显示装置中包括一个中框,该中框用于支撑显示装置中的显示面板,且对显示面板的周边起到遮光效果。在中框远离显示面板的一侧设置有光学膜片,光学膜片的边缘包括多个开口以套设在背板的侧壁上边缘设置的多个凸起上,实现光学膜片边缘的固定。由于光学膜片的热膨胀系数与背板的金属材质的热膨胀系数相差较多,当两者发生热胀冷缩等形变时,光学膜片的边缘与背板的侧壁上边缘的贴合效果会变差,导致光学膜片发生褶皱,进而影响显示装置的显示效果。另外,该光学膜片的除边缘以外的部分还可以被设置在其远离显示面板一侧的多个撑光柱支撑。由于撑光柱仅起到支撑光学膜片的作用,而没有与光学膜片固定连接,所以当上述 曲面显示装置用于交通工具(例如汽车)中时,会出现振动信赖性不合格的问题。例如,当上述曲面显示装置用于交通工具中时,撑光柱与光学膜片之间会发生摩擦和碰撞,不仅会出现噪音和异响,还会造成划伤光学膜片而导致显示画面出现白点以及亮线等不良。
另一种曲面显示装置中包括的一个中框用于支撑光学膜片以及显示面板,要求具有较大的硬度,且该中框中用于支撑光学膜片的支撑部具有较大的厚度,在显示装置处于高温高湿等环境测试下,中框的材料的涨缩量会增大,例如,中框膨胀时会与前框等其他结构干涉而出现漏光问题;中框收缩时会造成其与光学膜片之间的固定间隙减小,发生膜片褶皱,导致显示画面的不良。另外,上述中框的上边缘与背板的侧壁的上边缘通过挂扣结构等实现粗定位,上述中框与背板侧壁固定方式会导致组装公差较大,进而影响显示装置的曲率精度。此外,上述曲面显示装置中的中框具有较厚的厚度的情况,既导致加工成型的难度增大,也使得在中框与背板固定过程中发生较难变形以致难以与背板的曲率匹配的问题。
此外,曲面显示装置中的背板、中框以及前框等部件的曲率公差会影响整个曲面显示装置的曲率精度,因此,目前的大尺寸曲面显示装置的曲率精度仅为10%。
本公开的实施例提供一种曲面显示装置,包括:显示面板、第一中框、背光组件以及背板。第一中框位于显示面板的非显示侧,且被配置为承载显示面板;背光组件位于第一中框远离显示面板的一侧,包括光学膜片以及第二中框,第二中框位于光学膜片远离显示面板的一侧且被配置为支撑光学膜片;背板的至少部分位于背光组件远离显示面板的一侧。背板包括底板以及设置在底板边缘的侧板,第二中框连接到底板上。本公开通过在曲面显示装置中设置两个中框,并将第二中框固定在背板的底板上以实现组装公差最小化,进而提高显示装置的曲率精度。
下面结合附图对本公开实施例提供的曲面显示装置以及交通工具进行描述。
图1A为根据本公开一实施例提供的曲面显示装置的分解示意图,图1B为图1A所示的曲面显示装置处于装配状态的截面图。如图1A和图1B所示,曲面显示装置依次包括前框600、显示面板100、第一中框200、背光组件300以及背板400。
例如,如图1A和图1B所示,曲面显示装置包括的显示面板可以为液晶显示面板。液晶显示面板可以包括阵列基板(未示出)、对置基板(未示出)以及位于阵列基板和对置基板之间的液晶层(未示出)。
例如,阵列基板面向对置基板的一侧可以包括沿一方向延伸的多条栅线和沿另一方向延伸的多条数据线,多条栅线和多条数据线交叉设置以限定阵列排布的多个像素单元。每个像素单元可以包括像素电极以及薄膜晶体管,栅线与薄膜晶体管的栅极相连以控制薄膜晶体管的打开或者关闭,像素电极与薄膜晶体管的源漏极之一相连,数据线与薄膜晶体管的源漏极中的另一个相连,数据线通过薄膜晶体管对像素电极输入显示画面所需的电压信号以实现该阵列基板的显示。
例如,对置基板可以为彩膜基板,彩膜基板面向阵列基板的一侧可以设置与像素单元对应的彩膜层以及覆盖栅线和数据线等位于非显示区的结构的黑矩阵。例如,彩膜基板面向阵列基板的一侧还可以设置与像素电极相对设置的公共电极,公共电极被配置为施加公共电压以与像素电极产生驱动液晶层中的液晶分子偏转的电场。液晶分子通过发生偏转以改变液晶层的透过率,从而实现期望灰度图像的显示。
例如,显示面板100还可包括设置在阵列基板远离对置基板的一侧的第一偏光片和设置在对置基板远离阵列基板的一侧的第二偏光片。第一偏光片包括沿第一方向延伸的透光轴并使入射到其中的背光沿着第一方向偏振。第二偏光片包括沿第二方向延伸的透光轴并使入射到第二偏光片的光沿着第二方向偏振。例如,第一偏光片的透光轴和第二偏光片的透光轴彼此垂直。
例如,如图1A和图1B所示,背光组件300位于显示面板100的非显示侧以为显示面板100提供背光。例如,本公开实施例提供的背光组件300可以为直下式背光组件,包括光源组件330、位于光源组件330与显示面板100之间的光学膜片310以及位于光源组件330面向光学膜片310一侧的反射片340。
例如,光源组件330包括阵列排布的发光二极管。
例如,从光源组件330指向显示面板100的方向,光学膜片310可以包括依次堆叠设置的扩散板、第一扩散片、棱镜层以及第二扩散片。
例如,扩散板的材质可以选用聚甲基丙烯酸甲酯(PMMA)或者聚碳酸酯(PC)等透光材料,其厚度较厚,光透过率在50%-80%之间。例如,第一扩散片以较高雾面程度(haze)为考量,材质一般选用聚对苯二甲酸乙二醇酯 (PET)或聚碳酸酯等材料,设置在扩散板远离光源组件的一侧,使光分布更均匀。例如,棱镜层可以选用呈锯齿状或波浪状的聚甲基丙烯酸甲酯等微结构,具有很好的聚光效果。例如,第二扩散片选择穿透率较高、雾面程度较低的材料,可以作为保护棱镜层的结构。
光源组件330与扩散板之间设置有一定的混光距离以使光源组件330发出的光线在其与扩散板之间形成均匀的能量分布。例如,第一扩散片、棱镜层以及第二扩散片被配置为将光源组件330发出的光均匀的取出。
例如,为了提高光源的利用率,背光组件300中还可以包括反射片340,反射片340位于光源组件330的发光面且露出发光二极管,即反射片340包括与发光二极管一一对应的开口区以暴露发光二极管。
例如,背板400用于支撑光源组件330。
如图1A和图1B所示,第一中框200位于显示面板100的非显示侧,即,第一中框200位于显示面板100与背光组件300之间,且被配置为承载显示面板100。背光组件300还包括位于光学膜片310远离显示面板100一侧的第二中框320,第二中框320被配置为支撑光学膜片310。本公开实施例提供的曲面显示装置还包括位于背光组件300远离显示面板100一侧的背板400,背板400包括底板410以及设置在底板410边缘的侧板420,第二中框320连接到背板400的底板410上。上述“第二中框320连接到背板400的底板410”指第二中框与底板接触,且在至少一个方向上,第二中框与底板固定连接。本公开通过在曲面显示装置中设置两个中框,仅将第二中框固定在背板的底板上,可以实现组装公差最小化,进而提高显示装置的曲率精度。
例如,图2A为图1A所示的背板的平面结构示意图,图2B为沿图2A所示的AA线所截的截面示意图。如图1A-图2B所示,背板400的底板410和侧板420形成容纳空间以容纳背光组件300。背板400的底板410包括底壁411以及位于底壁411边缘外侧的第一支撑部413。底板410还包括连接底壁411的边缘与第一支撑部413的连接部412,第一支撑部413从连接部412的边缘向外延伸。
例如,背光组件300包括的光源组件330和反射片340均位于底壁411面向显示面板100的一侧表面,底壁411用于承载光源组件330和反射片340。
本公开实施例中的底壁411为曲面结构,用于使显示面板100维持预定的曲率。当本公开实施例提供的曲面显示装置用于观看时,底壁可以被凹入地弯 曲,即底壁的边缘向面向显示面板的一侧弯曲。
例如,如图1A-2B所示,底壁411包括彼此相对的两条第一边4111,第一边4111为弯曲的边,例如为弧形边以使底壁411为曲面结构。例如,底壁411还包括彼此相对的第二边4112,本实施例以第二边4112为直边为例进行描述。但不限于此,第二边也可以为弯曲的边,只要第一边与第二边围成的底壁为曲面结构即可。图2B为根据本公开一实施例沿平行于第二边的平面所截取的背板的截面示意图,从图2B可以看到,底壁在沿第二边的方向上大致沿直线延伸。上述第一边和第二边指底壁与连接部相接的部分定义的边。
例如,在本公开实施例提供的显示装置为大尺寸显示装置时,例如尺寸大于40寸时,弧形的第一边4111比直线形的第二边4112的长度更长以实现较佳的显示效果。
例如,如图1A-2B所示,在本公开实施例提供的一种技术方案中,底壁411远离显示面板100的一侧设置有弧形加强筋500,弧形加强筋500的延伸方向与第一边4111的延伸方向相同,且弧形加强筋500的强度大于底壁411的强度以有效束缚底壁411,防止底壁411发生形变,进而保证底壁411的曲率。即弧形加强筋500设置在底壁411远离显示面板100的一侧以防止底壁411发生变形。例如,弧形加强筋500的材料可以为电镀锌钢板,且厚度为2毫米,底壁411的材料可以为铝,且厚底为1.5毫米。
例如,如图1A-2B所示,弧形加强筋500可以位于底壁411的沿第一边4111的延伸方向延伸的边缘处,以更好的保证底壁的曲率。
当然,在底壁的第二边也设置为弧形形状时,底壁远离显示面板的一侧也可以设置沿第二边的延伸方向延伸的弧形加强筋,以进一步保证底壁的曲率。
例如,弧形加强筋500可以通过紧固件实现与底壁的连接,例如紧固件可以包括螺钉或螺栓等结构。
例如,可以在底壁411的远离显示面板100的一侧的两个沿第一边4111的延伸方向延伸的边缘均设置弧形加强筋500以起到更好的保证底壁411的曲率的效果。
例如,如图1A-2B所示,每个弧形加强筋500可以包括中心部501以及与底壁411固定的边缘部502,中心部501与底壁411之间可以设置一定距离,即中心部501内可以设置为空心结构,以在保证强度和曲率的同时还可以减轻重量。
例如,弧形加强筋500选取材料的硬度比背板的材料的硬度更大以加强背板强度,防止背板变形影响显示装置的曲率精度。
本实施例中以位于每个边缘的弧形加强筋为一条连续的加强筋为例,但不限于此,位于任意边缘的弧形加强筋也可以包括多个彼此分隔的子加强筋,只要加强筋能够起到保证底壁曲率的效果即可,本公开实施例对弧形加强筋的数量以及形状不作限制。
例如,在本公开实施例中的显示装置用于车载显示或商业显示等场景时,可以在上述弧形加强筋远离底壁的一侧设置多个支撑柱(图中未示出)以实现显示装置的固定。例如,沿弧形加强筋的延伸方向,弧形加强筋的中心部设置有多个支撑柱以将曲面显示装置固定在交通工具上。
例如,如图2A所示,例如,连接部412可以为围绕底板410一圈的结构,连接部412用于形成光源组件330与光学膜片310之间的混光腔以使光源组件330与光学膜片310之间形成一定的混光距离。本公开实施例不限于此,例如,连接部可以仅设置在底壁的两个第一边所在位置,即底壁的第二边位置处没有设置与底壁连接的连接部,则第一支撑部仅包括与两个第一边对应的弯曲部分。
例如,如图1A-2B所示,连接部412位于底壁411的边缘,且向底壁411面向显示面板100的一侧延伸。例如,连接部412远离底壁411的端部位于连接部412与底壁411连接位置处的外侧以便于底壁与连接部的一体成型。本公开实施例不限于此,连接部还可以垂直于底壁的第二边,只要能够实现连接底壁与第一支撑部即可。
例如,如图1A-2B所示,底板410还包括从连接部412的远离底壁411的边缘向外延伸的第一支撑部413,第一支撑部413位于底壁411面向显示面板100的一侧。
例如,第一支撑部413可以为围绕显示面板的连续的环状结构以支撑后续提到的第二中框。当然不限于此,第一支撑部也可以是不连续的环状结构,只要能够起到支撑第二中框的效果即可。
如图1A-2B所示,环形的第一支撑部413包括与第一边4111对应的第一弧形条状部4131,第一弧形条状部4131的弯曲方向与第一边4111的弯曲方向相同。本公开实施例中的底壁采用曲面结构,底壁的第一边为弧形边,从而通过连接部而与底壁的第一边连接的第一支撑部形成为具有弧形形状的第一弧 形条状部。
例如,本公开实施例中的背板可以采用一体压铸或者冲压成型工艺形成,则背板的底板可以为一体成型的结构,即底壁、连接部以及第一支撑部为一体成型的结构,从而在形成曲面底壁的同时形成了第一支撑部的第一弧形条状部。例如,背板可以采用冲压工艺形成,当背板是由冲压工艺形成时,回弹力较大,需要外加结构保证曲率;背板也可以采用压铸式成型工艺(将熔融状态的铁水流入设计好的模型中,并冷却成型)制成以降低成型后材料回弹率以及脱水率。
例如,背板的材料可以选择铝或者电镀锌钢板等。背板的材料可以根据实际产品功耗对散热性能的需求,当显示装置对温度有特殊要求时(例如显示装置的白光亮度为1000尼特时,背板温度要求不高于48℃),可以选择铝作为背板的材料;当显示装置无特殊要求时,可以选择电镀锌钢板作为背板的材料以降低成本。例如,底壁的厚度可以为1.5毫米,本公开实施例对此不作限制。
例如,如图1A-2B所示,第一支撑部413具有面向显示面板100的第一支撑面4130,该第一支撑面4130用于支撑第二中框320。例如该第一支撑面可以为连续的环形面。
在本公开的说明书中,第一支撑部的第一支撑面是指第一支撑部面向第二中框的一侧设置有支撑第二中框的平面,将第一支撑面定义为这样的平面是为了更好地说明其他部件与该第一支撑面的位置关系,但并不意味着第一支撑部的该侧表面一定是平面。例如,在第一支撑部的该侧表面具有凸起结构的情况下,作为平面的该第一支撑面可以为位于这些凸起结构的底部的平面或者经过第一支撑部的该侧表面上的一点的平面。在垂直于第一支撑面的方向上,从第一支撑部的第一支撑面的相反侧到第一支撑面的方向称为向“上”的方向,从第一支撑面到第一支撑部的第一支撑面的相反侧的方向称为向“下”的方向。由此,利用“上”和“下”、或者“顶”和“底”修饰的各种位置关系有了清楚的含义。例如,上表面、下表面、顶壁和底壁。另外,在平行于所述第一支撑面的方向上,从底壁的中心指向边缘的方向称为向“外”的方向,从底壁的边缘指向中心的方向称为向“内”的方向。因此,利用“内”和“外”修饰的相对位置关系也有了清楚的含义。例如,“内侧”和“外侧”。另外,需要注意的是,以上表示方位的术语仅仅是示例性的且表示各个部件的相位位置关系,对于本公开的各种装置或设备中的零件组合或整个装置或设备可以整体上旋转一定 的角度。
例如,如图1A-2B所示,背板400的侧板420从第一支撑部413的外侧边缘朝向显示面板100延伸。例如,侧板420可以为围绕显示面板100一圈的环状结构。
例如,图2C为图2A中的B位置处的放大图。如图1A-图2C所示,显示面板100包括的四条边一一连接以形成四个角,侧板420围绕显示面板100的四个角中的至少一个的位置处面向显示面板100的一侧设置有凹槽421。
例如,背板400中的底板410以及侧板420可以为一体成型的结构,例如可以采用一体压铸或者冲压成型工艺形成背板。本公开实施例通过在侧板的四个角的至少之一的位置设置凹槽,可以防止背板采用冲压工艺形成曲面结构时,位于侧板夹角位置出现挤料堆叠而导致侧板夹角位置出现凸起,从而可以保证背板位于侧板远离底壁侧的第一中框以及前框的曲率,进而保证显示装置的曲率精度。
例如,图3A为背板与背光组件组装的结构图的第一截面图,图3B为背板与背光组件组装的结构的第二截面图。如图3A和图3B所示,背光组件300包括光源组件330、反射片340、第二中框320以及光学膜片310。
例如,如图1A-3B所示,第二中框320包括第二支撑部321,第二支撑部321设置在第一支撑部413的第一支撑面4130上。第二支撑部321被配置为支撑光学膜片310,即,第二支撑部321具有面向显示面板100的第二支撑面3215,该第二支撑面3215用于支撑光学膜片310。
例如,如图3A和3B所示,第二支撑部321包括用于支撑光学膜片的第一部分3216以及与底板的第一支撑部413接触的第二部分3217。第二支撑部321的第一部分3216面向光学膜片的一侧设置有第二支撑面3215,第二支撑部321的第二部分3217沿与第二支撑面3215大致垂直的方向延伸,且与第一支撑部413接触,第一支撑部413通过支撑第二支撑部321的第二部分3217以起到支撑第二中框320的作用。
例如,底板410的第一支撑部413的第一支撑面4130与第二中框320的第二支撑部321固定连接,即第二中框320的第二支撑部321固定在底板410的第一支撑部413上。例如,第二支撑部321的第一部分3216固定在底板410的第一支撑部413上。
例如,图3C为本公开实施例中第二中框与第一支撑部连接的平面放大示 意图,图3D为沿图3C所示的CC’线所截的截面示意图。如图1A-3D所示,第二中框320的第二支撑部321(例如第二支撑部321的第一部分3216)通过第一固定件101与第一支撑部413固定连接,且第一固定件101沿垂直于第一支撑面4130的方向延伸以使第一支撑部431与第二中框320在垂直于第一支撑面4130的方向上固定连接。本公开实施例中的第二中框320连接到背板400的底板410可以包括沿垂直于第一支撑面的方向,第二中框与底板固定连接。本公开实施例通过将第二中框与背板沿垂直于第一支撑面的方向固定,以使第二中框与背板实现沿垂直于第一支撑面的方向的精定位,可以使组装公差最小化。此外,第二中框与背板沿垂直于第一支撑面的方向固定的方式,既可以防止第一固定件对第二中框的曲率产生影响,又可以使得第二中框与背板有更好的固定连接效果,以使第二中框能够匹配背板的曲率,进而较好的保证第二支撑部的曲率。
例如,第一固定件101可以为尼龙铆钉、螺钉等结构,本公开实施例对此不作限制。
例如,如图1A-3D所示,第二支撑部321包括沿垂直于第一支撑面4130的方向贯穿第二支撑部321的第一固定孔3210,底板410的第一支撑部413包括与第一固定孔3210彼此相对的第二固定孔4132。第一固定件101位于第一固定孔3210和第二固定孔4132中,第一固定件101通过第二支撑部321的第一固定孔3210与第一支撑部413的第二固定孔4132将第二中框320与底板410的第一支撑部413固定连接,且第二中框320与底板410的固定方向为垂直于第一支撑面的方向。上述第二固定孔可以是贯穿孔,此时,第一固定件可以为尼龙铆钉或螺钉,例如尼龙铆钉材质不易生锈,不会受到显示装置外界环境的湿度影响,且不会在显示装置处于振动环境中时发生异响;上述第二固定孔也可以是盲孔,此时,第一固定件可以为螺钉。
例如,如图1A-3D所示,第一固定孔3210包括第一子固定孔3211和第二子固定孔3212,第一子固定孔3211位于第二子固定孔3212靠近显示面板100的一侧。沿平行于第一支撑面4130的方向,第一子固定孔3211的最小尺寸大于第二子固定孔3212的最大尺寸以在第一子固定孔3211和第二子固定孔3212的连接位置处形成台阶,该台阶具有面向显示面板一侧的且平行于第一支撑面的固定面3214,第一固定件101设置在第一固定孔中以将第二中框与底板固定。
例如,第一固定件101可以包括彼此连接的第一子固定件1011和第二子固定件1012,以及位于第二子固定件1012远离第一子固定件1011一侧的第三子固定件1013。例如,第一子固定件1011和第二子固定件1012可以为一体结构,第三子固定件1013与第二子固定件1012活动连接。例如,第一子固定件1011位于第一子固定孔3211中,第二子固定件1012位于第二子固定孔3212以及第一支撑部413的第二固定孔4132中,第三子固定件1013位于第一支撑部413远离第二支撑部321的一侧以将第三子固定件1013与第二子固定件1012卡合连接以固定第二中框与底板。
例如,第一子固定件1011沿垂直于第一支撑面的方向的尺寸不大于第一子固定孔3211的深度,以保证第二支撑部用于支撑光学膜片的部分表面的平整性。
例如,沿平行于第一支撑面4130的方向,第一子固定件1011的最小尺寸大于第二子固定件1012的最大尺寸以及第二子固定孔3212的最大尺寸,且第一子固定件1011的最大尺寸小于第一子固定孔3211的最小尺寸,则在第二子固定件1012设置在第二子固定孔3212中时,第一子固定件1011可以压合在上述固定面3214上(即第一子固定件与固定面接触)以实现在垂直于第一支撑面4130的方向将第二中框320固定在底板410上。
例如,上述第一固定孔以及贯穿孔可以为圆孔,则沿平行于圆孔的直径的方向,第一固定孔的尺寸大于第一固定件的尺寸。例如,第二子固定孔3212的直径可以为3.78毫米,第二子固定件1012的直径可以为3.0毫米,第二固定孔4132的直径可以为3.1毫米。当然,本公开实施例不限于此。
图3E为本公开实施例另一示例提供的第二中框与第一支撑部连接的平面放大示意图。如图3E所示,上述第一固定孔3210可以为椭圆形孔,且椭圆形孔的长轴方向沿底壁的第一边的延伸方向,只要满足第一固定孔3210长轴尺寸大于第一固定件101的尺寸即可。
例如,本示例中的第一固定孔3210也可以包括第一子固定孔(图中未示出)和第二子固定孔(图中未示出),第一子固定孔位于第二子固定孔靠近显示面板的一侧。沿平行于第一支撑面4130的方向,第一子固定孔的最小尺寸大于第二子固定孔的最大尺寸以在第一子固定孔和第二子固定孔的连接位置处形成台阶,该台阶具有面向显示面板一侧的且平行于第一支撑面的固定面,第一固定件设置在第一固定孔中以将第二中框与底板固定。
例如,第一固定件101也可以包括彼此连接的第一子固定件(图中未示出)和第二子固定件(图中未示出),以及位于第二子固定件远离第一子固定件一侧的第三子固定件(图中未示出)。例如,第一子固定件和第二子固定件可以为一体结构。例如,第一子固定件位于第一子固定孔中,第二子固定件位于第二子固定孔以及第一支撑部的第二固定孔中,第三子固定件位于第一支撑部远离第二支撑部的一侧以将第三子固定件与第二子固定件卡合连接以固定第二中框与底板。
例如,沿平行于第一支撑面4130的方向,第一子固定件1011的最小尺寸大于第二子固定件1012的最大尺寸以及第二子固定孔3212的最大尺寸,且第一子固定件1011的最大尺寸小于第一子固定孔3211的最小尺寸,则在第二子固定件1012设置在第二子固定孔3212中时,第一子固定件1011可以压合在上述固定面3214上(即第一子固定件与固定面接触)以实现在垂直于第一支撑面4130的方向将第二中框320固定在底板410上。
例如,第一子固定孔可以为椭圆形孔,沿椭圆形孔的长轴方向,第一子固定件的尺寸小于第一子固定孔的尺寸;沿椭圆形孔的短轴方向,第一子固定件的尺寸大致等于第一子固定孔的尺寸。第二子固定孔可以为圆形孔,也可以为椭圆形孔,当第二子固定孔为椭圆形孔时,沿椭圆形孔的长轴方向,第二子固定件的尺寸小于第二子固定孔的尺寸;沿椭圆形孔的短轴方向,第二子固定件的尺寸大致等于第二子固定孔的尺寸。
由于沿平行于第一支撑面的方向,第一子固定孔3211的最小尺寸大于第一子固定件1011的最大尺寸,且第二子固定孔3212的尺寸大于第二子固定件1012的尺寸,即第一固定孔的尺寸大于第一固定件的尺寸,则沿平行于第一支撑面4130的方向,第一固定孔3210的内侧边与第一固定件101的外侧边缘之间具有一定间距,第一固定件101与第一固定孔3210的内侧边没有接触。从而第二中框在热胀冷缩等过程中产生形变时,上述间距提供了第二中框膨胀和收缩的空间,以避免第二支撑部出现局部鼓包等不良。而第二子固定件1012贯穿第二子固定孔3212与第一支撑部413中的第二固定孔,可以通过第二子固定件1012与第三子固定件的卡合连接结合第一子固定件1011压合固定面的方式实现第二中框与底板的沿垂直于第一支撑面的方向的固定连接。
例如,图3F为图3A所示的第二中框的侧面结构示意图。如图1A-3F所示,第二支撑部321与第一弧形条状部4131固定连接的部分支撑部的形状为 弧形。该部分弧形的支撑部与第一弧形条状部4131通过沿垂直于第一支撑面4130的方向延伸的第一固定件101固定连接,且沿弧形的支撑部的延伸方向,第一固定件101的尺寸小于第一子固定孔的尺寸以使第一固定件101能够在第一固定孔3210中沿平行于第一支撑面4130的方向相对于第二中框320移动。
本公开实施例采用第二中框支撑光学膜片,且将第二中框与背板的底板固定连接,而不是将第二中框与背板的侧板固定连接。从而,当第二支撑部的部分弧形的支撑部发生热胀冷缩等形变时,上述第一子固定孔与第一固定件之间保留的距离可以防止第一固定件周围的弧形支撑部面向显示面板的一侧出现凸包等严重影响第二中框曲率的形变,还有对光学膜片的影响。并且,本公开实施例中,第二中框中的第一固定孔仅是被第一固定件贯穿的过孔,而不是用于与第一固定件咬合连接的螺纹孔(以第一固定件为螺丝为例),所以即使第一固定件周围的弧形支撑部产生的涨缩位移较大,第一固定件的阻碍有可能导致固定孔形变较大,也不会存在固定孔失效的情况。由此,本公开采用沿垂直于第一支撑面的方向延伸的第一固定件将底板与第二中框固定连接,可以防止第一固定件对第二支撑部的曲率产生影响,以较好的保证第二支撑部的曲率。
本公开实施例中,底壁可以用于使第二支撑部中的弧形部分维持预定的曲率。
例如,在底壁的第二边为直边时,环形的第一支撑部中与第二边对应的条状部也为非弧形的,且设置在该条状部上的第二支撑部也为非弧形的。
例如,在将第二中框与背板连接之前,第二中框不具有很大的曲率,当第二中框通过第一固定件与第一支撑部连接时,第二中框的第二支撑部按照第一支撑部的曲率对应的形状弯曲。
例如,如图1A-3F所示,第二中框320还包括与第二支撑部321连接的延伸部322,延伸部322向靠近底壁411的方向延伸,且延伸部322远离第二支撑部321的端部抵压反射片340的四周。本公开实施例中,在第二中框包括的第二支撑部与第一支撑部固定连接的同时,第二中框包括的延伸部通过抵压在设置于底壁上的反射片上,以进一步固定第二中框,防止第二支撑部翻转并保证第二中框的稳定性。
需要说明的是,上述延伸部抵压在反射片上指延伸部与反射片接触,以使底壁对延伸部起到支撑作用的同时,延伸部对反射片起到固定作用,防止反射片的四周翘起。图1A-3F示意性的示出延伸部远离第二支撑部的端部抵压在反 射片上,实际产品中的延伸部是与反射片表面接触的。
例如,如图1A-3F所示,延伸部322与第二支撑部321连接的边缘位于延伸部322抵压在反射片340上的边缘的外侧,且延伸部322与第二支撑部321连接的边缘位于延伸部322抵压反射片340的端部靠近显示面板100的一侧,从而使得延伸部322的内侧表面形成为倾斜表面,且倾斜表面起到反射面的作用,例如倾斜表面的反射率不小于反射片的反射率,以提高光源组件330发出的光的利用率,提高光效。本公开实施例中,将第二中框设置为支撑光学膜片的同时,压合反射片以在光源组件和光学膜片之间形成混光空间。
例如,反射片340的材料具有柔性特性,通过设置在曲面底壁411上以形成具有一定的曲率的曲面反射片。
例如,第二中框320由具有一定硬度且还具有柔性的材料制成。例如,第二中框320的材料可以为聚碳酸酯(PC)中混合10%玻璃纤维的材料,从而保证第二中框具有预定硬度。
例如,图4A为图3A所示的第二中框与光学膜片组装后的局部平面结构示意图,图4B为光学膜片的平面结构示意图。如图1A-4B所示,第二中框320的第二支撑部321面向显示面板的一侧设置有多个突出部3213,光学膜片310中除扩散板以外的至少一个膜片(例如第一扩散片和第二扩散片)的边缘包括多个开口3200,多个开口3200与多个突出部3213一一对应以将光学膜片310除扩散板以外的至少一个膜层套设在第二中框320上,即多个开口3200一一套设在多个突出部3213上,以将光学膜片310除扩散板以外的至少一个膜层套设在第二中框320上。
本公开实施例提供的技术方案中,第二中框用于支撑且固定光学膜片(例如,扩散板粘贴在第二支撑面上)。由于光学膜片与第二中框的材料之间的热膨胀系数接近,所以当两者发生热胀冷缩等形变时,光学膜片的边缘与第二中框的贴合效果不会受到影响,从而保证了光学膜片的曲率。此外,本公开实施例中第二中框对光学膜片具有较好的支撑效果,可以省略撑光柱的设置,由此当该曲面显示装置应用于交通工具中,例如应用于汽车中时,还可以提高振动信赖性。
例如,图5A为图1A和图1B所示的光源组件中的条状灯板的平面结构示意图,图5B为与条状灯板连接的转接板的平面结构示意图,图5C为背板与光源组件组装示意图。如图3C、图5A-5C所示,背光组件包括的光源组件330 包括多个条状灯板3310,发光二极管331阵列排布在每个条状灯板3310上。反射片340位于光源组件330的发光面且露出发光二极管331,即反射片位于光源组件面向显示面板的一侧,且包括用于露出多个发光二极管的多个开口,以使发光二极管发出的光不会被反射片遮挡。
例如,如图5A-5C所示,条状灯板3310上包括定位孔3312,背板的底壁面向光源组件330的一侧设置有与定位孔3312对应的定位凸起,定位孔3312与定位凸起卡合(例如定位孔套设在定位凸起上)以实现条状灯板的定位。条状灯板3310面向底壁的一侧可以设置双面胶,条状灯板3310通过定位孔3312实现定位,并通过双面胶实现与底壁的固定连接。
例如,如图5A-5C所示,条状灯板3310上还包括第三固定孔3313,位于条状灯板3310远离底壁一侧的反射片340可以通过该第三固定孔3313与底壁固定连接,从而将条状灯板3310进行进一步固定。
例如,如图3E和图5A所示,反射片340包括与第三固定孔3313对应的第四固定孔341,采用尼龙铆钉贯穿第四固定孔以及第三固定孔可以将反射片340和条状灯板3310均固定在背板上。
例如,如图5C所示,每个条状灯板3310的延伸方向均平行于第二边4112,即条状灯板3310的延伸方向与弧形的第一边4111的延伸方向相交,从而可以防止背板的曲面底壁因与条状灯板应力不同,导致条状灯板受应力影响而发生变形或破损。例如,多个条状灯板3310可以沿第一边4111的延伸方向排布,但不限于此,多个条状灯板还可以阵列排布。
例如,图5A-5C所示,每个条状灯板3310还包括一个转接板连接器3311。背光组件还包括至少一个条状的转接板350,且位于底壁面向显示面板的一侧。每个转接板350包括多个灯条连接器351以连接多个条状灯板3310的转接板连接器3311。也就是,每个转接板350与多个条状灯板3310连接。
例如,每个转接板350均沿第一边4111的延伸方向延伸,多个转接板350沿第一边4111的延伸方向排列,且沿底壁的第二边4112延伸方向,转接板350均位于光源组件330的一侧。
例如,转接板的材料具有柔性特性,通过设置在曲面底壁411上以形成具有一定的曲率的弧形转接板。
例如,反射片340的沿底壁的第一边的延伸方向延伸的边缘可以设置开槽,该设置开槽的边缘与转接板对应,且开槽用于避让转接板连接器3311与灯条 连接器351连接的位置。
例如,如图5A-5C所示,转接板350上还设置有转接板固定孔353以实现与底壁的固定连接。
例如,图5D为背板远离显示面板一侧平面图。例如,如图5A-5D所示,转接板350还包括驱动连接器352以将条状灯板3310连接至位于背板远离显示面板一侧的光源驱动板700。例如,驱动连接器352可以通过柔性扁平电缆(FleBible Flat Cable,FFC)701连接至光源驱动板700。
例如,与每个转接板350连接的至少两个条状灯板3310可以通过连接到转接板350而实现减少条状灯板输出线的数量,进而减少条状灯板输出端接口的数量的目的,即,减少驱动连接器352的数量。
例如,一个转接板350可以设置八个灯条连接器351以与八个条状灯板3310的转接板连接器3311连接以将条状灯板输出端接口的数量减少为三个。也就是,与八个条状灯板3310连接的转接板350可以设置三个驱动连接器352以作为八个条状灯板3310的输出端口,由此减少了条状灯板的输出端口。本公开实施例示意性的示出将八个灯条的输出端接口减少到3个的情况,但不限于此,还可以为1个、2个、4个等,只要灯条输出端口的数量小于灯条的数量即可。图5C示意性的示出了两个转接板连接十六个条状灯板的情况,本公开实施例对转接板连接条状灯板的数量不作限制,可以根据实际产品需要进行设置。
例如,图5E为图1A所示的背板的连接部的局部侧面示意图。如图5D-5E所示,连接部412与底壁411的两个第一边4111之一相接的部分设置有条形出线孔4120,条形出线孔4120的长轴与第一边4111平行。例如,柔性电缆701穿过上述条形出线孔4120以实现光源组件330和光源驱动板700的连接。本公开实施例在连接部设置长轴与第一边平行的条形出线孔,可以降低出线孔对连接部的强度的影响。
例如,转接板350的驱动连接器352可以与柔性扁平电缆701连接,该柔性扁平电缆701穿过连接部412上设置的条形出线孔4120,并延伸至底壁411远离显示面板的一侧,以与位于显示装置背面的光源驱动板700连接。本公开实施例中,在连接部设置条形出线孔,以使连接光源组件与光源驱动板的灯线从连接部穿过而不是底壁,可以降低出线孔对底壁的强度以及曲率的影响。
例如,光源驱动板700可以通过与外部电源连接以对各发光二极管进行例 如分区和/或分时的电压信号驱动。
例如,光源驱动板700可以通过电源线、时钟线、输入/输出线(I/O线)等信号线连接以控制光源驱动板700的工作时序。例如,可以通过对发光二极管进行分区控制以使显示装置达到对比度好、亮度高的效果。
在对背光组件的光源的亮度要求较高时,发光二极管的数量需要设置较多,如果每个条状灯板均通过一条信号线连接到背板远离显示面板一侧的光源驱动板,则需要在背板的底壁开设多个连接过孔,会导致底壁的强度受到影响。本公开实施例通过设置与多个条状灯板对应的转接板,可以减少条状灯板输出端口的数量,从而减少背板上开孔的数量以保证背板的强度。
基于上述实施例,本公开还提供这样一种技术方案:一种显示装置,包括:显示面板;背光组件,位于所述显示面板的非显示侧,包括多个条状灯板,每个所述条状灯板沿第一方向延伸;背板,所述背板的至少部分位于所述背光组件远离所述显示面板的一侧,其中,所述背板包括底壁和与所述底壁边缘连接的侧壁;所述多个条状灯板位于所述底壁面向所述显示面板的一侧,且所述背光组件还包括位于所述底壁面向所述显示面板的一侧的至少一个转接板,所述转接板沿与所述第一方向相交的第二方向延伸,每个所述转接板连接至少两个所述条状灯板以为其提供驱动信号。
在一些示例中,每个所述条状灯板包括一个转接板连接器,每个所述转接板包括多个灯条连接器以分别连接多个所述条状灯板的所述转接板连接器。
在一些示例中,所述底壁包括沿所述第一方向延伸的第一底边和沿所述第二方向延伸的第二底边,所述侧壁与靠近所述转接板的所述第二底边相接的部分设置有出线孔;所述显示装置还包括光源驱动板,位于所述底壁远离所述显示面板的一侧,所述转接板通过从所述出线孔引出的导线与所述光源驱动板连接。
在一些示例中,所述底壁为曲面结构,且所述第二底边为弯曲的边。
在一些示例中,所述出线孔为条形出线孔,所述条形出线孔的长轴与所述第二底边平行。
在一些示例中,所述背光组件还包括光学膜片以及中框,所述中框位于所述光学膜片远离所述显示面板的一侧,且被配置为支撑所述光学膜片。
需要说明的是,在本技术方案中的设置有出线孔的侧壁即为图5E所示实施例中的连接部412;本技术方案中的底壁的第一底边为图2A所示实施例中 的第二边4112,第二底边为图2A所示实施例中的第一边4111;本技术方案中的中框为图1A所示实施例中的第二中框320。其他未详细描述的技术特征均可以参考上述实施例。
例如,图6A为第一中框、背光组件以及背板组装的局部截面示意图。如图6A所示,本公开实施例中的第一中框200的远离显示面板100的一侧抵压在光学膜片310上,即第一中框200远离显示面板100的表面与光学膜片310接触以压合固定光学膜片310,确保光学膜片310的平整度。
例如,图6B为图1A和图1B所示第一中框的平面结构示意图,图6C为图6B中的D位置处的局部放大示意图,图6D为图6C中的第一中框的侧面示意图。如图1B、图6A-6D所示,第一中框200可以为围绕显示面板100一圈的连续环状结构。
例如,如图6A-6B所示,第一中框200包括围绕显示面板100的外框210,外框210的至少部分位于背板400的侧板420外侧,且与侧板420固定连接。例如,第一中框的外框的一部分可以与侧板卡合连接以实现第一中框的定位,第一中框的外框的另一部分可以与侧板固定连接以实现位置的固定。例如,图6D示出了第一中框的外框上的卡和孔2020,背板的侧板上还设置有与该卡和孔2020对应的卡和凸起以与卡和孔卡合实现第一中框的粗定位。也就是,外框的卡和孔通过套设在侧板上的卡和凸起上以实现第一中框的粗定位。
例如,在垂直于底壁的方向,第一中框可以被背板的侧板支撑。第一中框的外框包括连接孔2021,背板的侧板包括与外框的连接孔2021彼此相对的螺孔。可以采用螺丝贯穿连接孔和螺孔,且螺丝通过外框的连接孔2021以与侧板的螺孔互相咬合,从而将第一中框与背板的侧板固定连接,且该固定方向为垂直于侧板的方向。本公开实施例中,第一中框中的连接孔(图6D所示的连接孔2021)仅是被螺丝贯穿的过孔,而不是用于与螺丝咬合连接的螺纹孔,所以即使螺丝周围的第一中框产生的涨缩位移较大,螺丝的阻碍有可能导致连接孔形变较大,也不会存在连接孔失效的情况。
例如,第一中框200的材料可以为遮光材料以起到为显示面板100的边缘区域遮光的效果。例如,第一中框200的材料可以为柔性材料以随其他结构弯曲而弯曲。例如,第一中框200的材料可以为聚碳酸酯(PC)。
例如,本公开实施例中的第二中框320的材料的硬度比第一中框200的材料的硬度大。
本公开实施例中,由于第一中框和第二中框的位置以及所支撑的膜层不同,所以两者材料的硬度选取的不同。第一中框选用的材料的硬度较低,可以使第一中框的曲率由位于其远离显示面板一侧的前框的曲率决定。即使在发生热胀冷缩等形变时,前框通过与第一中框压合,也能尽量减小第一中框的曲率的变化量。并且,本公开实施例提供的第一中框的厚度较薄,例如0.8毫米,可以提升其曲面成型率。第二中框位于背板的底板上,通过采用硬度较大的材料以起到支撑光学膜片的作用,且能够稳定的设置在底板上,防止因第二中框的材料较软而产生不必要的形变,从而保证光学膜片的曲率精度。
本公开实施例提供的显示装置中设置的彼此分离的第一中框和第二中框,可以保证每个中框曲面成型后的曲率精度;并且,第一中框和第二中框可以通过采用不同材料形成,并且形成为不同厚度以保证与其他各结构之间的曲率进行良好的契合,以可以减小组装公差,从而提升显示装置的曲率精度。
例如,如图6A-6D所示,第一中框200包括被配置为承载显示面板100的第三支撑部230,第三支撑部230包括与第一弧形条状部4131对应的第二弧形条状部220,第二弧形条状部220与第一弧形条状部4131的弯曲方向相同。本公开实施例通过将支撑显示面板的第一中框设置为曲面结构,可以保证显示面板具有预定曲率。
例如,第三支撑部230包括彼此相对的两个第二弧形条状部220,两个第二弧形条状部220对应于底壁的两条第一边。在底壁的第二边也为弧形时,第三支撑部还可以包括另外两条彼此相对的弧形条状部;在底壁的第二边为直边时,第三支撑部包括的另外两条彼此相对的条状部为直线型的条状部,本公开实施例对此不作限制。
例如,如图6A-6D所示,第三支撑部230具有面向显示面板100的第三支撑面,第三支撑面设置有缓冲件102,缓冲件102可以在显示装置处于振动状态下释放显示面板与第一中框之间的作用力,以起到防止显示面板100受外力所用而出现破损的作用。例如缓冲件可以为泡棉或者橡胶等柔性材料。
例如,如图6A-6D所示,外框210包裹显示面板100侧边的内侧边也可以设置有缓冲件102。从而,显示面板的侧边面向地面放置时,第一中框的内侧边对显示面板起到支撑作用,而设置在第一中框的内侧边的缓冲件可以对显示面板起到保护作用。
例如,如图6A-6D所示,第一中框200的外框210的一个边缘可以设置侧 壁挡墙202以及位于相邻侧壁挡墙202之间的侧壁开口201,第一中框200的外框210的其他边缘可以为包括用于与背板固定的连接孔的连续结构。例如,侧壁挡墙202所在外框210可以为与第一弧形条状部对应的弧形外框,该侧壁挡墙202用于在显示面板面向侧壁挡墙202的一侧面向地面放置时,对显示面板起到支撑作用。由此,设置在外框内侧的缓冲件可以为设置在侧壁挡墙内侧板的缓冲件。
例如,显示装置还包括电路板(未示出),位于第一支撑部远离显示面板的一侧表面且位于连接部的外侧,电路板通过从位于第一中框的外框设置的侧壁开口引出的导线与显示面板连接。
例如,图7A为图1A和图1B所示的前框的平面结构示意图,图7B为图7A所示的前框的前框侧壁的结构示意图,图7C为前框侧壁中的E位置处的放大示意图,图7D为前框与背板连接的局部结构示意图。如图1A-7D所示,前框600位于第一中框200远离背光组件300的一侧,且被配置为抵压显示面板100,以将显示面板100固定在第一中框200上。也就是,前框与显示面板接触以将显示面板固定在第一中框上。
例如,前框600可以为围绕显示面板100的连续的环状结构。
例如,前框600的材料可以为电镀锌钢板,厚度为0.6~0.8毫米,可采用冲压成型确保前框的曲率。例如,背板以及前框可以采用压铸式成型工艺制作,成型后材料回弹以及脱水率小于冲压成型工艺,统计公差曲率可做到±1mm。
例如,前框600可以包括位于第二弧形条状部220远离第一弧形条状部一侧的第三弧形条状部610。上述第三弧形条状部为对应于底壁的第一边的条状部,本公开实施例通过对前框的第三弧形条状部的曲率进行设定以决定显示面板以及第一中框的曲率。
例如,第一中框的第二弧形条状部的曲率由前框的第三弧形条状部的曲率决定。本公开实施例中的第一中框的材料采用柔性材料以随前框的弯曲而弯曲,即第一中框的曲率由位于其远离显示面板一侧的前框的曲率决定,可以更好的与前框配合以保证位于其上的显示面板的曲率。
例如,在显示面板设置在第一中框以及前框之间时,显示面板的曲率由前框与第一中框的曲率共同决定。
例如,如图7A-7D所示,前框600包括位于第一中框200的外框210远离侧板420一侧的前框侧壁620,前框侧壁620可以通过螺钉与背板的侧板固定。
例如,前框侧壁620包括长条形孔6200,以使前框侧壁620通过贯穿长条形孔6200的第二固定件630固定连接至侧板420。长条形孔6200的短轴垂直于第一支撑面以缩小前框与背板锁附后的曲率公差,即减小曲率影响值,同时利用长轴确保组装偏差,提高装配率。
例如,背板的螺钉孔可以为圆孔,其直径为2.5mm。前框侧壁的螺钉孔为椭圆孔,其长轴的尺寸为4.4mm,短轴的尺寸为3.2mm,则前框曲率公差为±0.7mm。
例如,沿短轴的延伸方向,所述第二固定件的尺寸与短轴的尺寸相匹配以实现前框的精定位。也就是,沿短轴的方向,第二固定件的尺寸与短轴的尺寸大致相等。
例如,沿长轴方向,第二固定件与长轴的尺寸之差可以在0.81~0.96毫米之间;沿短轴方向,第二固定件与短轴的尺寸之差可以在0.31~0.46毫米之间。
本公开实施例中的精定位指固定件与固定孔之间的尺寸差为装配公差,装配公差是为了便于将固定件安装到固定孔中而合理存在的公差。例如在实际产品中,固定件的尺寸与固定孔的尺寸不可能是完全相同的,为了便于将固定件安装到固定孔中,固定孔的尺寸要超过固定件,例如超过0.1~0.4毫米。
粗定位是指固定件与固定孔之间的尺寸差大于装配公差,以使固定件与固定孔在固定后可以至少在一个方向上发生一定的相对位移,为了实现粗定位,即允许固定孔和固定件能够在至少一个方向上发生相对移动,会将固定件与固定孔之间的尺寸差距设置为大于装配公差,例如装配公差为0.1~0.5mm,在粗定位的情况下,固定件与固定孔之间的尺寸差可以设置为0.81~0.96mm。
例如,图8为根据本公开实施例提供的显示装置的曲率公差关系示意图。本公开实施例中的显示装置的不同结构的曲率不同,为保证组装性,各装配面要保持相同的曲率半径,不同结构的曲率半径公式为Rx=R0±h,Rx指第x层结构的曲率半径,R0指基准层的曲率半径,h指基准层与X层的高度差。本公开实施例以显示面板中的阵列基板与对置基板之间的假想平面的曲率半径定义为曲面显示装置的曲率半径R0。当然,也可以将显示面板远离背板的上表面的曲率半径定义为R0。
如图8所示,本公开实施例提供的显示装置的曲率可做到4200R±4.5%R,4200R指显示面板的曲率半径。采用冲压方式形成曲面显示装置的背板时,显示装置的弦高公差可做到±2mm,采用压铸方式形成背板时,显示装置的弦高 可做到±1mm。如图8所示,冲压方式制造的前框产生的公差为d1±0.2mm,注塑方式制造的第一中框的公差为d2±0.05mm,第一中框到背板的间隙为0.2mm,冲压方式制作的背板的公差为d3±0.3mm,背板的曲率公差为±0.7mm,背板与前框的固定孔位中心到背板底壁远离显示面板一侧的表面的偏移公差为d4±0.3mm,螺钉直径制作公差为d7±0.05mm,螺钉到前框定位孔边缘间隙为0.6mm,前框定位孔中心位置偏移为d6±0.05mm,前框定位孔中心到前框表面位置偏移公差为d5±0.2mm,由此,上述各公差累计后的曲率公差为2.65mm。将生产过程中的多个曲面显示装置进行上述曲率公差的统计归一后得到统计公差为1.67mm。由此可以得到本公开实施例提供的显示装的曲率精度可做到4.5%R。
例如,本公开实施例提供的曲面显示装置可以为应用到汽车中的车载曲面显示装置。
本公开另一实施例提供一种交通工具,包括上述任一种曲面显示装置。
例如,交通工具可以包括机动车、飞机、轮船、地铁等承载人或运输物品的工具。
例如,机动车可以为汽车、卡车等车辆。
有以下几点需要说明:
(1)本公开的实施例附图中,只涉及到与本公开实施例涉及到的结构,其他结构可参考通常设计。
(2)在不冲突的情况下,本公开的同一实施例及不同实施例中的特征可以相互组合。
以上所述仅是本公开的示范性实施方式,而非用于限制本公开的保护范围,本公开的保护范围由所附的权利要求确定。

Claims (26)

  1. 一种曲面显示装置,包括:
    显示面板;
    第一中框,位于所述显示面板的非显示侧,且被配置为承载所述显示面板;
    背光组件,位于所述第一中框远离所述显示面板的一侧,包括光学膜片以及第二中框,所述第二中框位于所述光学膜片远离所述显示面板的一侧且被配置为支撑所述光学膜片;以及
    背板,所述背板的至少部分位于所述背光组件远离所述显示面板的一侧,
    其中,所述背板包括底板以及设置在所述底板边缘的侧板,所述第二中框连接到所述底板上。
  2. 根据权利要求1所述的曲面显示装置,其中,所述底板包括底壁以及位于所述底壁边缘外侧的第一支撑部,所述第一支撑部位于所述底壁面向所述显示面板的一侧,所述第一支撑部具有面向所述显示面板的第一支撑面,所述第二中框包括第二支撑部,所述第二支撑部具有面向所述显示面板的第二支撑面以支撑所述光学膜片,所述第二支撑部设置在所述第一支撑部的第一支撑面上。
  3. 根据权利要求2所述的曲面显示装置,其中,所述第二中框的所述第二支撑部通过第一固定件与所述第一支撑部在沿垂直于所述第一支撑面的方向彼此固定。
  4. 根据权利要求3所述的曲面显示装置,其中,所述第二支撑部包括沿垂直于所述第一支撑面的方向贯穿所述第二支撑部的固定孔,所述第一固定件位于所述固定孔中,且沿平行于所述第一支撑面的方向,所述固定孔的尺寸大于所述第一固定件的尺寸以使所述第一固定件与所述固定孔的内侧壁之间具有间隙。
  5. 根据权利要求1-4任一项所述的曲面显示装置,其中,所述第二中框的材料的硬度比所述第一中框的材料的硬度大。
  6. 根据权利要求1-5任一项所述的曲面显示装置,其中,所述第一中框的远离所述显示面板的一侧抵压在所述光学膜片上。
  7. 根据权利要求4所述的曲面显示装置,其中,所述底壁包括彼此相对的两条第一边,所述第一边为弧形边;所述第一支撑部包括与所述第一边对应 的第一弧形条状部,所述第一弧形条状部的弯曲方向与所述第一边的弯曲方向相同。
  8. 根据权利要求4所示的曲面显示装置,其中,所述固定孔为圆孔,沿平行于所述圆孔的直径的方向,所述固定孔的尺寸大于所述第一固定件的尺寸。
  9. 根据权利要求7所示的曲面显示装置,其中,所述固定孔为椭圆形孔,所述椭圆形孔的长轴方向平行于所述第一边,且沿平行于所述第一边的方向,所述固定孔的尺寸大于所述第一固定件的尺寸。
  10. 根据权利要求2-4任一项所述的曲面显示装置,其中,所述底板还包括连接所述底壁的边缘与所述第一支撑部的连接部,所述第一支撑部从所述连接部的边缘向外延伸。
  11. 根据权利要求10所述的曲面显示装置,其中,所述背光组件还包括光源组件以及反射片,所述光源组件包括阵列排布的发光二极管,所述反射片位于所述光源组件的发光面且露出所述发光二极管,所述光源组件设置于所述底壁靠近所述显示面板的一侧上。
  12. 根据权利要求11所述的曲面显示装置,其中,所述第二中框还包括与所述第二支撑部连接且部分位于所述背板的连接部内侧的延伸部,所述延伸部向靠近所述底壁的方向延伸;
    所述延伸部远离所述第二支撑部的端部抵压所述反射片的四周。
  13. 根据权利要求12所述的曲面显示装置,其中,所述延伸部与所述第二支撑部连接的边缘位于所述延伸部抵压在所述反射片上的边缘的外侧,且所述延伸部与所述第二支撑部连接的边缘位于所述延伸部抵压所述反射片的端部靠近所述显示面板的一侧,从而使得所述延伸部的内侧表面形成为倾斜表面,且所述倾斜表面的反射率不小于所述反射片的反射率。
  14. 根据权利要求11-13任一项所述的曲面显示装置,其中,所述底壁包括彼此相对的两条第二边,所述第二边为直边,所述发光二极管位于多个条状灯板上,且每个所述条状灯板的延伸方向平行于所述第二边。
  15. 根据权利要求14所述的曲面显示装置,其中,所述背光组件还包括位于所述底壁面向所述显示面板的一侧的至少一个转接板,每个所述转接板连接至少两个所述条状灯板以为其提供驱动信号。
  16. 根据权利要求15所述的曲面显示装置,其中,所述底壁还包括彼此 相对的两条第一边,所述第一边为弧形边;
    所述连接部设置有条形出线孔,所述连接部设置有所述条形出线孔的部分与所述底壁的靠近所述转接板的所述第一边相接,所述条形出线孔的长轴与所述第一边平行。
  17. 根据权利要求16所述的曲面显示装置,还包括光源驱动板,位于所述底壁远离所述显示面板的一侧,所述转接板通过从所述条形出线孔引出的导线与所述光源驱动板连接。
  18. 根据权利要求7或16所述的曲面显示装置,其中,所述底壁远离所述显示面板的一侧设置有弧形加强筋,所述弧形加强筋的延伸方向与所述第一边的延伸方向相同,且所述弧形加强筋的强度大于所述底壁的强度以防止所述底壁变形。
  19. 根据权利要求5所述的曲面显示装置,其中,所述侧板从所述第一支撑部的外侧边缘朝向所述显示面板延伸,所述第一中框包括围绕所述显示面板的外框,所述外框的部分位于所述侧板外侧,且与所述侧板固定连接。
  20. 根据权利要求19所述的曲面显示装置,其中,所述第一中框包括被配置为承载所述显示面板的第三支撑部,所述第三支撑部具有面向所述显示面板的第三支撑面,所述第三支撑面以及所述外框中包裹所述显示面板的内侧均设置有缓冲件。
  21. 根据权利要求19或20所述的曲面显示装置,还包括:前框,位于所述第一中框远离所述背光组件的一侧,且被配置为抵压所述显示面板以及所述第一中框的外框远离所述底板一侧的表面以保证所述显示面板与所述第一中框的曲率。
  22. 根据权利要求21所述的曲面显示装置,其中,所述前框包括位于所述外框远离所述侧板的前框侧壁,所述前框侧壁包括长条形孔,以使所述前框侧壁通过贯穿所述长条形孔的第二固定件固定连接至所述侧板,所述长条形孔的短轴大致垂直于所述第一支撑面,且沿所述短轴的延伸方向,所述第二固定件的尺寸与所述短轴的尺寸大致相等。
  23. 根据权利要求20述的曲面显示装置,其中,所述显示面板包括的四条边一一连接以形成四个角,所述侧板围绕所述显示面板的四个角中的至少一个的位置处面向所述第三支撑面的一侧设置有凹槽。
  24. 根据权利要求1-23任一项所述的曲面显示装置,其中,所述第一中 框的材料为遮光材料。
  25. 根据权利要求1-24任一项所述的曲面显示装置,其中,所述曲面显示装置为车载曲面显示装置。
  26. 一种交通工具,包括权利要求1-25任一项所述的曲面显示装置。
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KR101678627B1 (ko) * 2015-08-27 2016-12-06 주식회사 모바일리소스코리아 커브드 디스플레이 프레임을 갖는 표시장치
CN106526933A (zh) * 2016-11-07 2017-03-22 深圳市华星光电技术有限公司 可变曲面液晶显示器
CN106504651A (zh) * 2016-12-26 2017-03-15 深圳市华星光电技术有限公司 一种曲率可变的显示装置及其框体结构
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CN114019711B (zh) * 2021-11-23 2024-03-12 深圳创维-Rgb电子有限公司 一种直下式液晶模组及显示装置
CN114399960A (zh) * 2022-02-28 2022-04-26 京东方科技集团股份有限公司 一种曲面显示模组以及显示装置
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