WO2019052445A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2019052445A1
WO2019052445A1 PCT/CN2018/105080 CN2018105080W WO2019052445A1 WO 2019052445 A1 WO2019052445 A1 WO 2019052445A1 CN 2018105080 W CN2018105080 W CN 2018105080W WO 2019052445 A1 WO2019052445 A1 WO 2019052445A1
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WO
WIPO (PCT)
Prior art keywords
light
back plate
light bar
display area
display
Prior art date
Application number
PCT/CN2018/105080
Other languages
English (en)
French (fr)
Inventor
单剑锋
Original Assignee
惠科股份有限公司
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 惠科股份有限公司 filed Critical 惠科股份有限公司
Priority to US16/647,077 priority Critical patent/US10921647B2/en
Publication of WO2019052445A1 publication Critical patent/WO2019052445A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Definitions

  • the present application relates to the field of display, and in particular to a display device.
  • Liquid crystal display devices (including liquid crystal televisions, liquid crystal displays, etc.) generally use LEDs as light sources.
  • a plurality of LED light sources are positioned on a straight circuit board by a punching member to form a light bar, and then the light bar is fixed to heat the aluminum extrusion or the side of the back plate. After the circuit board is turned on, the LED light source on the light bar is driven to illuminate the liquid crystal screen, so that people can view the text or pictures displayed on the LCD screen.
  • the LED light source since the LED light source has a certain illumination angle, the light emitted by the LID light source cannot completely illuminate the corner formed by the light bar and the bottom of the liquid crystal device, so that the corners in the liquid crystal display device are at Outside the edge of the LED light source or the angle of illumination, a vignetting angle is formed, which affects the browsing and processing of the content at the corners of the LCD screen.
  • the embodiment of the present application provides a display device, the display device includes: a display panel; a frame, a back plate is disposed in the frame; and a backlight module, wherein the backlight module includes a light source for projecting light to the display panel;
  • the light source includes a light bar distributed with a plurality of light emitting units; wherein: the light bar is fixed on the back plate, and the light bar and the back plate have the same shape, so that the light bar is close to the light bar A portion of the light emitted by the light emitting units at both ends of the backing plate is offset to the corner of the display panel.
  • the light bar and the back plate are curved from the two ends of the frame to the inside to form the same arc shape, so that some light rays emitted from the light-emitting unit on the light bar near the two ends of the back plate are biased. Move to the corner of the display panel.
  • the two ends of the light bar and the corresponding back plate are inclined with respect to the frame, so that part of the light emitted by the light-emitting unit on the light bar near the two ends of the light bar is offset to the The corners of the display panel.
  • the optical normal line formed by the light emitting unit is at a preset angle with a plane of the corresponding frame.
  • the predetermined angle is between 60 degrees and 90 degrees.
  • a radius of curvature of the arc point of the light-emitting unit adjacent to the two ends of the light strip is less than a preset maximum value, and the maximum value is near the two ends of the light strip on the light strip.
  • a heat dissipating material is filled between the light bar and the back plate.
  • the display panel includes a display area and a non-display area connected to the display area, and a portion of the intersection formed by the light emitted by two adjacent light-emitting units on the light bar is located in the display area. Display the boundary line between the areas or on the non-display area.
  • the partial intersection point is located on a boundary line or a non-display area between the display area and the non-display area, and includes: one and only one intersection point between the display area and the non-display area On the boundary line.
  • the distance of the light-emitting unit from the corresponding frame is sequentially increased from the two ends of the frame to the middle.
  • a filling material is added between the backboard and the bezel to fix the backboard and the light bar.
  • the embodiment of the present application further provides a display device, the display device includes: a display panel; a frame, a back plate is disposed in the frame; and a backlight module, wherein the backlight module includes a light source for projecting light to the display panel
  • the light source includes a light bar distributed with a plurality of light emitting units; wherein: the light bar and the back plate are curved from the two ends of the frame to the inside to form the same arc shape, so that the light bar is close to the back A part of the light emitted from the light-emitting unit at the two ends of the board is offset to the corner of the display panel; or the two ends of the light-emitting unit and the corresponding back-plate are inclined with respect to the frame, so that the light bar is close to the light A portion of the light emitted by the light emitting units at both ends of the backing plate is offset to the corner of the display panel.
  • a heat dissipating material is filled between the light bar and the back plate.
  • the display panel includes a display area and a non-display area connected to the display area, and a portion of the intersection formed by the light emitted by two adjacent light-emitting units on the light bar is located in the display area. Display the boundary line between the areas or on the non-display area.
  • the partial intersection point is located on a boundary line or a non-display area between the display area and the non-display area, and includes: one and only one intersection point between the display area and the non-display area On the boundary line.
  • the optical normal formed by the light emitting unit has an off angle N from the horizontal or vertical direction of between 0 and 30 degrees.
  • a filling material is added between the backboard and the bezel to fix the backboard and the light bar.
  • the distance of the light-emitting unit from the corresponding frame is sequentially increased from the two ends of the frame to the middle.
  • the optical normal line formed by the light emitting unit is at a predetermined angle with a plane of the corresponding frame, and the preset angle is between 60 degrees and 90 degrees.
  • the embodiment of the present application further provides a display device, wherein the display device includes: a display panel, the display panel includes a display area and a non-display area connected to the display area; a frame, and the back of the frame is provided with a back a backlight module, the backlight module includes a light source for projecting light to the display panel; the light source includes a light bar distributed with a plurality of light emitting units; wherein the light bar is fixed on the back plate, A heat dissipating material is filled between the light bar and the back plate, and the light bar and the back plate have the same shape, and the light bar and the back plate are bent from the two ends of the frame to the inside.
  • the same arc shape causes a portion of the light emitted from the light-emitting unit adjacent to the two ends of the light strip to be offset to a corner of the display panel; the optical normal formed by the light-emitting unit and the plane of the corresponding frame are pre-predicted An angle of the preset angle is between 60 degrees and 90 degrees; a radius of curvature of the arc point of the light-emitting unit near the two ends of the light strip is less than a preset maximum value, Maximum When the light beam emitted from the light-emitting unit at the two ends of the light strip near the back plate is offset from the corresponding optical normal, the light beam is projected on the vertex of the corner of the display panel, corresponding to the arc point of the light-emitting unit.
  • a radius of curvature value a partial intersection formed by the light emitted by two adjacent light-emitting units on the light bar is located on a boundary line or a non-display area between the display area and the non-display area, and only one intersection point is located at the A boundary line between the display area and the non-display area.
  • the light bar and the back plate have the same shape, part of the light emitted from the light-emitting unit on the light bar near the two ends of the back plate can be offset to the corner of the display panel, thereby avoiding the formation of the display panel.
  • the corners of the corners become vignetting, which improves the display effect and is more conducive to display and observation.
  • FIG. 1 is a schematic view showing an exemplary display device forming a vignetting angle
  • Figure 2 is an enlarged view of A in Figure 1;
  • FIG. 3 is a schematic structural view of a light bar in an embodiment
  • FIG. 4 is a schematic view showing the light emitted by the light emitting unit covering the corner B of FIG. 2 in an embodiment
  • FIG. 5 is a schematic structural view of a curved light bar in another embodiment
  • FIG. 6 is a schematic structural view of a curved light bar in another embodiment
  • FIG. 7 is a schematic diagram of the light emitted by the light emitting unit covering the corner B of FIG. 2 in another embodiment.
  • FIG. 7 is a schematic diagram of the light emitted by the light emitting unit covering the corner B of FIG. 2 in another embodiment.
  • liquid crystal display has gradually replaced the traditional anode ray tube display due to its superior characteristics such as light weight, low power consumption and no radiation.
  • a liquid crystal display is mainly composed of a liquid crystal display panel (Open Cell), a backlight module, a bezel, and the like.
  • Open Cell liquid crystal display panel
  • a backlight module backlight module
  • bezel backlight module
  • the requirements for the assembly of the bezel are getting higher and higher.
  • LEDs As light sources.
  • a plurality of LED light sources are positioned on a straight circuit board by a punching member to form a light bar, and then the light bar is fixed to heat the aluminum extrusion or the side of the back plate.
  • the LED light source on the light bar is driven to illuminate the liquid crystal screen, so that people can view the text or pictures displayed on the LCD screen.
  • the light in the vignetting area for the LED light cannot project on the area on the display panel, which usually occurs in the corner.
  • the display panel When the display device is assembled, the display panel is fixed on the frame, and the corner formed between the adjacent frames is formed when there is no light, and when the display panel is working normally, the corner forms a vignetting angle and a vignetting angle.
  • the text or image content at the location can cause the user to be difficult to see or view the blur.
  • a in FIG. 1 includes a vignetting area formed in the display panel.
  • 2 is an enlarged view of A in FIG. 1.
  • the light emitted by the LED lamp 110 cannot be projected to the corner B region formed by the frame, and thus the vignetting angle of the corner B region may occur.
  • the corners between the borders are darker and inconvenient for the user to watch.
  • an embodiment of the present embodiment provides a display device, including:
  • the frame is provided with a back plate 140;
  • the backlight module including a light source for projecting light to the display panel;
  • the light source includes a light bar 120 having a plurality of light emitting units 110 distributed therein; wherein:
  • the light bar 120 is fixed on the back plate 140, and the light bar 120 and the back plate 140 have the same shape, so that part of the light emitted by the light emitting unit 110 on the light bar 120 near the two ends of the back plate 140 is offset to the corner of the display panel.
  • the light emitting unit 110 can be selected as an LED light.
  • the light bar of the light-emitting unit and the two ends of the corresponding back plate may be inclined with respect to the frame, so that part of the light emitted by the light-emitting unit on the light bar near the two ends of the back plate is offset to the corner of the display panel.
  • the light bar and the back plate at both ends of the frame are inclined, and the angle of the tilt can be set according to a specific situation. After the tilt setting, the light emitted by the LED on the light bar at both ends of the frame is inclined. Can be offset to the corners of the display panel.
  • the light bar 120 and the back plate 140 are bent from the two ends of the frame to the inside to form the same arc shape, so that part of the light emitted by the light-emitting unit on the light bar near the two ends of the back plate is shifted to The corners of the display panel.
  • a specific light-emitting unit is not shown in FIG. 5, and the light-emitting unit is arc-shaped distributed on the light bar. As can be seen from the figure, the distance of the light-emitting unit from the corresponding frame is sequentially increased from the two ends of the frame to the middle.
  • a filling material may be added between the back plate 140 and the frame to fix the back plate and the lamp. Strips, to avoid loosening of the light bar during transportation, affecting subsequent use.
  • the illumination angle of the light-emitting unit 110 is adjusted, it is necessary to adjust the light-emitting unit at the corresponding corner so that the light emitted by the light-emitting unit can project and cover the B area at the corner, thereby avoiding the vignetting.
  • the intersection between the light rays emitted between the adjacent LEDs is at least The portion of the non-display area that is aligned with the display panel at the border so that there is no shadow or dark lines under the display panel.
  • the light-emitting unit 110 is disposed on the light bar corresponding to the arc, and the optical normal formed by the light-emitting unit 110 is at a preset angle with the plane of the corresponding side frame.
  • the optical normal line formed by each of the light-emitting units 110 on the light bar 120 and the plane of the corresponding frame are at a preset angle. As shown in FIG. 7, the preset angle can make the light emitted by the light emitting unit 110 cover the corner B, thereby avoiding the generation of the vignetting angle.
  • FIG. 7 only shows one of the light emitting units 110 on the light bar 120.
  • the light emitting unit 110 is located at one end of the back plate and is the last light emitting unit at the end. It can be known that each of the light-emitting units on the light bar can be correspondingly installed according to the needs, and correspondingly, can be implemented by corresponding mold adjustments, which will not be described in detail in this embodiment.
  • the deviation angle N between the optical normal line formed by the light emitting unit 110 and the horizontal or vertical direction is between 0 degrees and 30 degrees.
  • the optical normal formed by the light emitting unit 110 and the plane of the corresponding side frame are formed.
  • the angle M is between 60 degrees and 90 degrees. It can be known that the light bar is a special curved shape in a straight line. However, this embodiment does not include such a situation in order to avoid a vignetting angle. Therefore, the preset angle in the embodiment does not include 90 degrees.
  • the angle M formed by the optical normal line formed by the light emitting unit 110 and the plane of the corresponding side frame is between 60 degrees and 90 degrees, which is sufficient to ensure at least the intersection between the light rays emitted between the adjacent light emitting units 110.
  • the portion of the display area that is aligned with the display panel at the border so that there are no shadows or dark lines under the display panel.
  • the embodiment further needs to set the arc of the light bar.
  • the radius of curvature of the arc point of the light bar 110 near the two ends of the back plate 140 is less than a preset maximum value, and the maximum value is corresponding to the light emitting unit on the light bar near the two ends of the back plate.
  • the maximum radius of curvature corresponding to the vignetting angle can be calculated when the bending program of the light bar is minimum, and the curvature corresponding to the curved light bar is set at the time of setting.
  • the radius is smaller than the maximum radius of curvature.
  • the arc formed by the light bar can be a circular arc or a non-circular arc, and the non-circular arc causes the curvature radius of the position of the different light emitting units to be different.
  • the radius of curvature of the embodiment is The preset maximum value is the maximum radius of curvature of the arc point of the light bar on the light bar near the ends of the back plate.
  • the light-emitting unit on the curved light bar can be separately set as needed, including the position of the light-emitting unit on the light bar, the tilt angle, and the like, and the distance between the light-emitting units.
  • the light-emitting unit When the light-emitting unit emits light, it generates a certain amount of heat. If the heat is not distributed in time, it will affect the life of the display device, and may cause a malfunction in severe cases.
  • the heat dissipation material is filled between the light bar and the back plate, and the heat dissipation material can absorb heat and be emitted to the outside while the light emitting unit emits light, thereby improving the display effect.
  • the heat dissipating material may be a heat dissipating glue or the like.
  • the embodiment further provides a display device, and the display device includes:
  • the backlight module including a light source for projecting light to the display panel;
  • the light source includes a light bar distributed with a plurality of light emitting units; wherein:
  • the light bar and the back plate are bent from the two ends of the frame to the inside to form the same arc shape, so that part of the light emitted by the light-emitting unit on the light bar near the two ends of the back plate is offset to the corner of the display panel; or
  • the two ends of the light bar and the corresponding back plate are inclined with respect to the frame, so that part of the light emitted by the light-emitting unit on the light bar near the two ends of the back plate is offset to the corner of the display panel.
  • the light bar and the back plate have the same shape, part of the light emitted from the light-emitting unit on the light bar near the two ends of the back plate can be offset to the corner of the display panel, thereby avoiding the formation of the display panel.
  • the corners of the corners become vignetting, which improves the display effect and is more conducive to display and observation.
  • the embodiment further provides a display device, including:
  • a back plate 140 is disposed in the frame
  • the backlight module includes a light source for projecting light to the display panel;
  • the light source includes a light bar 120 having a plurality of light emitting units 110 distributed therein; wherein:
  • the light bar 120 is fixed on the back plate 140, and the light bar is oppositely disposed on the back plate, so that part of the light emitted by the light emitting unit 110 on the light bar 120 near the two ends of the back plate 140 is offset to the corner of the display panel.
  • the partial light emitted from the light-emitting unit near the two ends of the light strip is offset to the corner of the display panel, thereby preventing the corner formed by the display panel from becoming a vignetting angle, thereby improving the display effect and further improving the display effect. Conducive to display and observation.
  • the light emitting unit 110 is preferably an LED lamp.
  • the light bar is relatively fixed on the back plate, and includes: two ends of the light bar where the light emitting unit is located are inclined with respect to the back plate, so that light emitted by the light emitting unit near the two ends of the back plate is biased Move to the corner.
  • a part of the light bar on the light bar at the two ends of the back plate may be inclined with the back plate, so that the light-emitting units on the inclined light bar are inclined at a certain angle, so that the light emitted by the light-emitting units is projected and covered.
  • Area B at the corner The size of the angle may be set according to actual conditions, and the embodiment is not limited to the setting of various angles.
  • the light bar 120 may also be arched relative to the back plate 140, wherein the back plate 140 is disposed in parallel or perpendicular, so that the light bar 120 is adjacent to the two ends of the back plate 140. A portion of the light emitted by unit 110 is offset to the corners of the display panel.
  • the arch shape includes an arc shape.
  • the light bar 120 When the light bar 120 is disposed in an arch shape relative to the back plate 140, the light bar 120 may be curved from the two ends of the back plate 140 toward the inside of the frame to form an arc, so that the light bar 120 emits light.
  • the distance of the unit from the backing plate 140 is sequentially increased from the both ends of the backing plate 140 to the middle.
  • the light emitting unit 110 on the light bar 120 is not specifically shown.
  • the light-emitting unit 110 is disposed on the light bar 120 correspondingly in an arc shape.
  • the distance between the light-emitting unit 110 on the light-strip 120 and the back plate 140 is from the two ends of the back plate 140 to the middle. Increase in turn.
  • the curved light bar 120 can better adjust the illumination angle of the light emitting unit 110.
  • arc is only one implementation that can be implemented in this embodiment.
  • the embodiment is not limited to the light bar to implement the content described in this embodiment in other shapes.
  • the illumination angle of the light-emitting unit 110 it is necessary to adjust the light-emitting unit 110 at the corresponding corner so that the light emitted therefrom can project and cover the B area at the corner, thereby avoiding the vignetting.
  • the arrangement of the curved light bar is also prevented to cause the bottom of the display panel to have a shadow or a dark line, and therefore, the intersection between the light rays emitted between the adjacent light emitting units 110.
  • the portion of the non-display area that is at least aligned with the display panel at the border to ensure that there are no shadows or dark lines under the display panel.
  • the light-emitting unit 110 is disposed on the light bar 120 correspondingly in an arc shape, and the optical normal line formed by the light-emitting unit 110 is at a preset angle with the plane of the corresponding frame.
  • the optical normal line formed by each of the light-emitting units 110 on the light bar 120 and the plane of the corresponding frame are at a predetermined angle M.
  • the preset angle M can cause the light emitted by the light emitting unit 110 to cover the corner B, thereby avoiding the generation of the vignetting angle.
  • FIG. 7 only shows one of the light emitting units 110 on the light bar.
  • the light emitting unit 110 is located at one end of the back plate 140 and is the last light emitting unit at the end. It can be known that each of the light-emitting units on the light bar can be correspondingly installed according to the needs, and correspondingly, can be implemented by corresponding mold adjustments, which will not be described in detail in this embodiment.
  • the deviation angle N between the optical normal formed by the light-emitting unit 110 and the horizontal or vertical direction is between 0 and 30 degrees.
  • the angle M formed by the optical normal formed by the light-emitting unit 110 and the plane of the corresponding frame is 60. Degree to 90 degrees. It can be known that the light bar 120 has a straight line as a special curved shape, but this embodiment does not include the case to avoid the vignetting angle. Therefore, the preset angle in the embodiment does not include 90 degrees. .
  • the angle formed by the optical normal formed by the light emitting unit 110 and the plane of the corresponding frame is between 60 degrees and 90 degrees, which is sufficient to ensure that the intersection between the light rays emitted between the adjacent LEDs is at least at the border of the display panel.
  • the area of the display area is such that there are no shadows or dark lines under the display panel.
  • the radius of curvature of the arc point of the light-emitting unit 110 on the light strip 120 near the two ends of the back plate 140 is less than a preset maximum value, and the maximum value is the light-emitting unit 110 on the light strip 120 near the two ends of the back plate 140.
  • the arc formed by the light bar 120 can be a circular arc or a non-circular arc, and the non-circular arc causes the curvature radius of the position of the different light emitting units to be different.
  • the radius of curvature of the embodiment The preset maximum value is the maximum radius of curvature of the arc point of the light bar on the light bar near the ends of the back plate.
  • the light emitting unit 110 can be separately disposed on the curved light bar, including the position of the light emitting unit 110 on the light bar, the tilt angle, and the like, and the distance between the light emitting units 110.
  • the light-emitting unit 110 When the light-emitting unit 110 emits light, a certain amount of heat is generated. If the heat is not emitted in time, the life of the display device may be affected, and in a serious case, the fault may be caused.
  • the light strip 120 and the back plate 140 are filled with a heat dissipating material, and while the light emitting unit emits light, the heat dissipating material can absorb heat and be radiated to the outside to enhance the display effect.
  • the heat dissipating material may be a heat dissipating glue or the like.
  • a typical display panel includes a display area and a non-display area connected to the display area.
  • the display area is an area for displaying text, a picture, and a background when the display panel is working normally, and the displayed content can be operated by the display area.
  • part of the display panel needs to be embedded in the frame. This part of the display panel is mainly fixed with the frame, which is called a non-display area.
  • Display areas and non-display areas usually have clear boundary lines. In general, the intersection formed between adjacent two light-emitting units on the light bar must cover the boundary line to avoid shadow or dark lines on the display panel.
  • a partial intersection formed by the light emitted by two adjacent light-emitting units on the light bar is located on a boundary line or a non-display area between the display area and the non-display area.
  • the partial intersection point is located on the boundary line or the non-display area between the display area and the non-display area, and includes: one and only one intersection point is located on a boundary line between the display area and the non-display area.
  • the intersection of the light rays between the adjacent two light-emitting units is located on the boundary or in the non-display area, which can avoid the shadow or dark lines of the display panel.
  • the embodiment further provides a display device, including:
  • a back plate 140 is disposed in the frame
  • the backlight module includes a light source for projecting light to the display panel;
  • the light source includes a light bar 120 having a plurality of light emitting units 110 distributed therein; wherein:
  • the light bar 120 is fixed on the back plate 140, and the light emitting unit 110 on the light bar 120 is inclined with respect to the back plate 140, so that part of the light emitted from the light emitting unit 110 on the light bar 120 near the two ends of the back plate 140 is offset to the display panel.
  • the corners are provided.
  • the light-emitting unit on the light bar obliquely with respect to the back plate, part of the light emitted by the light-emitting unit on the light bar near the two ends of the back plate can be offset to the corner of the display panel, thereby avoiding display.
  • the corners formed by the panel become vignetting, which improves the display effect and is more conducive to display and observation.
  • the LED lamp 110 can be made into a light bar on a straight circuit board, and the circuit board is a flexible material with certain ductility and bending property.
  • a good light strip is attached to the side of the back panel to provide illumination to the display unit.
  • the illuminating unit has a certain illuminating angle (the illuminating angle is usually the angle of the light generated by the illuminating unit from the optical normal), and the illuminating angles of the two sides are symmetrical with the optical normal, and it is difficult to set the illuminating unit due to the corner of the frame (corner) It is easy to cause a vignetting at the corners. Therefore, the vignetting phenomenon can be changed by adjusting the light-emitting angle of the light-emitting unit.
  • the light-emitting unit 110 on the light bar 120 is disposed obliquely with respect to the back plate, and includes: the light-emitting unit 110 from the middle of the light bar 120 to the corresponding side is inclined toward the corner formed by the corresponding side display panel.
  • the light emitting unit 110 located in the middle of the light bar 120 may be disposed in parallel with the corresponding side frame.
  • FIG. 3 is a schematic view showing a light bar disposed in a middle side of the light bar.
  • the light emitting unit 110 located in the middle of the light bar is parallel to the frame of the corresponding side, and is inclined from the middle of the light bar to the right side of the light emitting unit 110 on the left side.
  • the height of the left side of the light-emitting unit 110 from the middle of the light bar to the right side is inclined.
  • the optical normal line formed by the inclined light-emitting unit 110 is at a preset angle with the plane of the corresponding frame, and the preset angle is between 60 degrees and 90 degrees.
  • the light-emitting unit 110 when the light-emitting unit 110 is designed, it can be designed as a left high right low structure or a right high left low structure, thereby facilitating assembly of the display device.
  • FIG. 3 only provides a schematic diagram of one side frame.
  • the left side and the right side are relatively opposite, and the other side borders may also be defined by upper or lower orientation words.
  • part of the light emitted by the light-emitting unit 110 on the light bar near the back plate is offset to the corner of the display panel, and the light emitted by the light-emitting unit 110 covers the B area, which can effectively avoid the generation of the vignetting and enhance the display. effect.
  • the light emitted by the leftmost illumination unit may cover the vignetting area of the corresponding side
  • the light emitted by the rightmost illumination unit may also cover the vignetting area of the corresponding side.
  • the light emitted by the rightmost light emitting unit may be the light that deviates from the angle corresponding to the optical normal.
  • the deviation from the rightmost or leftmost LED corresponding to the angle of the optical normal is the same as the vertex of the corresponding corner, or is projected outside the vertex of the corner to avoid the generation of the vignetting.
  • the illumination angle of the illumination unit it is necessary to adjust the illumination unit at the corresponding corner so that the light emitted by the illumination unit can project and cover the B area at the corner, thereby avoiding the vignetting.
  • the display device while avoiding the vignetting angle, it is also necessary to avoid the tilting arrangement of the light emitting unit, causing the bottom of the display panel to have a shadow or a dark line. Therefore, the intersection between the light rays emitted between the adjacent LEDs is at least located.
  • the non-display area of the border that is aligned with the display panel ensures that there are no shadows or dark lines under the display panel.
  • a typical display panel includes a display area and a non-display area connected to the display area.
  • the display area is an area for displaying text, a picture, and a background when the display panel is working normally, and the displayed content can be operated by the display area.
  • part of the display panel needs to be embedded in the frame. This part of the display panel is mainly fixed with the frame, which is called a non-display area.
  • Display areas and non-display areas usually have clear boundary lines. In general, the intersection formed between adjacent two light-emitting units on the light bar must cover the boundary line to avoid shadow or dark lines on the display panel.
  • a partial intersection formed by the light emitted by two adjacent light-emitting units on the light bar is located on a boundary line or a non-display area between the display area and the non-display area.
  • the partial intersection point is located on the boundary line or the non-display area between the display area and the non-display area, and includes: one and only one intersection point is located on a boundary line between the display area and the non-display area.
  • the intersection of the light rays between the adjacent two light-emitting units is located on the boundary or in the non-display area, which can avoid the shadow or dark lines of the display panel.

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Abstract

一种显示装置，显示装置包括：显示面板；边框，边框内设置有背板（140）；背光模块，背光模块包括用于向显示面板投射光线的光源；光源包括分布有若干发光单元的灯条（120）；其中：灯条（120）固定于背板（140）上，且灯条（120）与背板（140）为相同的形状，使灯条（120）上靠近背板（140）两端的发光单元发出的部分光线偏移至显示面板的边角。

Description

显示装置 技术领域
本申请涉及显示领域，特别是涉及一种显示装置。
背景技术
液晶显示装置(包括液晶电视、液晶显示器等)一般采用LED作为光源。在液晶显示装置的制作工艺中，多个LED光源经打件被定位在直条的电路板上形成灯条，之后灯条被固定散热铝挤或者背板的侧面。电路板导通电源后，灯条上的LED光源被驱动发光点亮液晶屏幕，从而使人们能够察看液晶屏显示的文字或图片等内容。
但是，如图1和图2所示，由于LED光源具有一定的发光角度，导致LID光源发出的光线无法完全照射到液晶装置中灯条与底部形成的角落，使得液晶显示装置中的边角处于LED光源的发光角度边缘或者发光角度之外，形成暗角，影响人们对液晶屏边角处内容的浏览与处理。
发明内容
本申请实施例提供一种显示装置，所述显示装置包括：显示面板；边框，所述边框内设置有背板；背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；所述光源包括分布有若干发光单元的灯条；其中：所述灯条固定于所述背板上，且所述灯条与所述背板为相同的形状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
在一实施例中，所述灯条与所述背板从所述边框的两端向内部弯曲形成相同的弧状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
在一实施例中，发光单元所在灯条与对应背板的两端相对于所述边框均倾斜设置，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
在一实施例中，所述发光单元形成的光学法线与对应边框所在平面呈预设的夹角。
在一实施例中，所述预设的夹角位于60度至90度之间。
在一实施例中，所述灯条上靠近所述背板两端的发光单元所在弧形点的曲率半径小于预设最大值，所述最大值为所述灯条上靠近所述背板两端的发光单元发出的与对应光学法线偏移角度最大的光线投射于所述显示面板的边角的顶点时，对应所述发光单元所在弧形点的曲率半径值。
在一实施例中，所述灯条与所述背板之间填充有散热材料。
在一实施例中，所述显示面板包括显示区域和与所述显示区域连接的非显示区域，所述灯条上相邻两个发光单元发出的光线形成的部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上。
在一实施例中，所述部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上，包括：有且仅有一个交点位于所述显示区域与非显示区域之间的边界线上。
在一实施例中，所述发光单元距离对应边框的距离由边框的两端向中间依次增加。
在一实施例中，在所述背板与所述边框之间添加有填充材料以固定所述背板和所述灯条。
本申请实施例还提供一种显示装置，所述显示装置包括：显示面板；边框，所述边框内设置有背板；背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；所述光源包括分布有若干发光单元的灯条；其中：所述灯条与所述背板从所述边框的两端向内部弯曲形成相同的弧状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角；或者发光 单元所在灯条与对应背板的两端相对于所述边框均倾斜设置，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
在一实施例中，所述灯条与所述背板之间填充有散热材料。
在一实施例中，所述显示面板包括显示区域和与所述显示区域连接的非显示区域，所述灯条上相邻两个发光单元发出的光线形成的部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上。
在一实施例中，所述部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上，包括：有且仅有一个交点位于所述显示区域与非显示区域之间的边界线上。
在一实施例中，所述发光单元形成的光学法线与水平或垂直方向的偏离角度N介于0度到30度之间。
在一实施例中，在所述背板与所述边框之间添加有填充材料以固定所述背板和所述灯条。
在一实施例中，所述发光单元距离对应边框的距离由边框的两端向中间依次增加。
在一实施例中，所述发光单元形成的光学法线与对应边框所在平面呈预设的夹角，所述预设的夹角位于60度至90度之间。
本申请实施例还提供一种显示装置，其中，所述显示装置包括：显示面板，所述显示面板包括显示区域和与所述显示区域连接的非显示区域；边框，所述边框内设置有背板；背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；所述光源包括分布有若干发光单元的灯条；其中，所述灯条固定于所述背板上，所述灯条与所述背板之间填充有散热材料，且所述灯条与所述背板为相同的形状，所述灯条与所述背板从所述边框的两端向内部弯曲形成相同的弧状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角；所述发光单元形成的光学法线与对应边框所在平面呈预设的夹角；所述预设的夹角位于60度至90度之间；所述灯条上靠近所述背板两 端的发光单元所在弧形点的曲率半径小于预设最大值，所述最大值为所述灯条上靠近所述背板两端的发光单元发出的与对应光学法线偏移角度最大的光线投射于所述显示面板的边角的顶点时，对应所述发光单元所在弧形点的曲率半径值；所述灯条上相邻两个发光单元发出的光线形成的部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上，有且仅有一个交点位于所述显示区域与非显示区域之间的边界线上。
以上所述显示装置中，通过使灯条与背板均为相同的形状，可以使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角，从而避免显示面板形成的边角成为暗角，提高了显示效果，更有利于显示和观察。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为示范性的显示装置形成暗角的示意图；
图2为图1中A处的放大图；
图3为一实施例中灯条的结构示意图；
图4为一实施例中发光单元发出的光线覆盖图2中边角B的示意图；
图5为另一实施例中弧形灯条的结构示意图；
图6为另一实施例中弧形灯条的结构示意图；
图7为另一实施例中发光单元发出的光线覆盖图2中边角B的示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施 例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
随着显示器技术的发展，液晶显示器(Liquid-crystal Display:LCD)因具有体形轻薄、低功率消耗与无辐射等优越特性，已经逐渐取代传统阳极射线管显示器。一般液晶显示器主要由液晶显示面板(Open Cell)、背光模块、边框等组成。随着液晶显示面板的工艺逐渐朝着窄边框或无边框的趋势发展，对边框组装的要求越来越高。
目前的液晶显示装置(包括液晶电视、液晶显示器等)一般采用LED作为光源。在液晶显示装置的制作工艺中，多个LED光源经打件被定位在直条的电路板上形成灯条，之后灯条被固定散热铝挤或者背板的侧面。电路板导通电源后，灯条上的LED光源被驱动发光点亮液晶屏幕，从而使人们能够察看液晶屏显示的文字或图片等内容。通常暗角区域为LED灯发出的光线无法投射显示面板上的区域，这种情况通常发生在角落里。在对显示装置进行组装时，会将显示面板固定于边框上，相邻的边框之间的形成的角落在没有光线投射到时，在显示面板正常工作时，该角落会形成暗角，暗角处的文字或图片内容会导致用户不易察看或察看模糊。
目前对液晶显示器进行组装时，普遍无法避免形成暗角的问题。如图1和图2所示，图1中的A处包含了显示面板中形成的暗角区域。图2为图1中A处的放大图，从图中可知，LED灯110发出的光线由于无法投射到边框形成的角落B区域，因此，会导致边角B区域出现暗角。在显示面板上则表现为边框之间的角落较为黑暗，不方便用户观看。
为此，本实施例的一实施方式提供了一种显示装置，包括：
显示面板；
边框，所述边框内设置有背板140；
背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；
所述光源包括分布有若干发光单元110的灯条120；其中：
灯条120固定于背板140上，且灯条120与背板140为相同的形状，使灯条120上靠近背板140两端的发光单元110发出的部分光线偏移至显示面板的边角。
其中，发光单元110可选为LED灯。
在一实施方式中，可以将发光单元所在灯条与对应背板的两端相对于边框均倾斜设置，使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角。具体而言，将位于边框两端的灯条与背板均倾斜设置，倾斜的角度可以根据具体的情况进行设置，需要保证倾斜设置后，位于边框两端的灯条上的LED在倾斜后发出的光线可以偏移至显示面板的边角。
另一实施方式中，如图5所示，灯条120与背板140从边框的两端向内部弯曲形成相同的弧状，使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角。
图5中并未显示具体的发光单元，发光单元弧形分布于灯条上，从图中可知，发光单元距离对应边框的距离由边框的两端向中间依次增加。
如图5所示，灯条与背板从边框的两端向内部弯曲形成弧状后，在对显示装置进行组装时，可以在背板140与边框之间添加填充材料，以固定背板和灯条，避免在运输过程中灯条出现松动，影响后续使用。
在对发光单元110的发光角度进行调整时，需要调整对应边角处的发光单元，使其发出的光线能够投射并覆盖边角处的B区域，从而避免暗角。同时，在显示装置中，在避免暗角的同时，也要避免弧形灯条的设置导致显示面板底部具有暗影或暗纹，因此，相邻的LED之间发出的光线之间的交点要至少位于边框处与显示面板对齐的非显示区域部分，这样才能够保证显示面板下面没有暗影或暗纹。
为此，发光单元110对应弧形分布于灯条上的同时，发光单元110形成的光学法线与对应侧边框所在平面呈预设的夹角。本实施例中，灯条120上每一个发光单元110形成的光学法线与对应边框所在平面均呈预设的夹角。如图7 所示，呈预设的夹角可以使发光单元110发出的光线覆盖边角B，从而避免暗角产生。
其中，图7只是具体显示了在灯条120上的其中一个发光单元110，该发光单元110位于背板的其中一端，且为端部的最后一个发光单元。可以知道的是，灯条上的每个发光单元可以根据需要相应的安装设计，对应的，可以通过相应的一些模具调整实现，本实施不再具体详述。
本实施例中，发光单元110形成的光学法线与水平或垂直方向的偏离角度N介于0度到30度之间，相应的，发光单元110形成的光学法线与对应侧边框所在平面形成的夹角M位于60度至90度之间。可以知道的是，灯条呈直线为一种特殊的弧形，但本实施例为避免暗角，并不包括这种情况，因此，本实施例中预设的夹角并不包括90度。
本实施例中，发光单元110形成的光学法线与对应侧边框所在平面形成的夹角M位于60度至90度之间足以保证相邻的发光单元110之间发出的光线之间的交点至少位于边框处与显示面板对齐的显示区域部分，使显示面板下面没有暗影或暗纹。
为避免暗角，本实施例还需要进一步对灯条的弧形进行设置。在另一实施例中，灯条110上靠近背板140两端的发光单元110所在弧形点的曲率半径小于预设最大值，最大值为灯条上靠近背板两端的发光单元发出的与对应光学法线偏移角度最大的光线投射于显示面板形成的边角的顶点时，对应发光单元所在弧形点的曲率半径值。
曲率半径越大，灯条弯曲程度越小，灯条更为靠近背板，这就容易导致暗角。为此，可以根据显示面板的尺寸，如长度、高度等，计算出在灯条的弯曲程序最小时可以避免暗角时所对应的最大曲率半径，在设置时，将弧形灯条对应的曲率半径小于该最大曲率半径即可。
可以知道的是，灯条所形成的弧形可以为圆形弧或非圆形弧，非圆形弧则会导致不同发光单元所在位置的曲率半径不同，此时，本实施例的曲率半径的 预设最大值为灯条上靠近背板两端的发光单元所在弧形点的最大曲率半径。
本实施例中，在弧形灯条上发光单元可以根据需要分别设置，包括发光单元在灯条上的位置、倾斜角度等，以及发光单元之间的距离。
发光单元在发光的同时，会产生一定的热量，如果这些热量不及时散发，会影响显示装置的寿命，严重时可能导致故障。为此，另一实施例中，灯条与背板之间填充有散热材料，在发光单元发光的同时，散热材料可以吸收热量并散发至外部，提升显示效果。其中，散热材料可以是散热胶等。
本实施例还提供了一种显示装置，显示装置包括：
显示面板；
边框，所述边框内设置有背板；
背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；
所述光源包括分布有若干发光单元的灯条；其中：
灯条与背板从边框的两端向内部弯曲形成相同的弧状，使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角；或者
发光单元所在灯条与对应背板的两端相对于边框均倾斜设置，使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角。
以上所述显示装置中，通过使灯条与背板均为相同的形状，可以使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角，从而避免显示面板形成的边角成为暗角，提高了显示效果，更有利于显示和观察。
本实施例的还提供了一种显示装置，包括：
显示面板；
边框，边框内设置有背板140；
背光模块，背光模块包括用于向显示面板投射光线的光源；
光源包括分布有若干发光单元110的灯条120；其中：
灯条120固定于背板140上，且灯条相对设置于背板上，使灯条120上靠近背板140两端的发光单元110发出的部分光线偏移至显示面板的边角。
以上所述显示装置中，通过使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角，从而避免显示面板形成的边角成为暗角，提高了显示效果，更有利于显示和观察。
本实施例中，发光单元110优选为为LED灯。
在一实施方式中，灯条相对固定于背板上，包括：发光单元所在灯条的两端相对于所述背板倾斜设置，以使靠近所述背板两端的发光单元所发出的光线偏移至所述边角。具体而言，可以使灯条上位于背板两端的部分灯条与背板倾斜设置，使倾斜设置的灯条上的发光单元倾斜一定的角度，从而使这些发光单元发出的光线投射并覆盖边角处的B区域。其中，角度的大小可以根据实际的情况进行设置，本实施例不限于各种不同角度的设置。
另一实施方式中，如图6所示，也可以使灯条120相对于背板140呈拱形，其中，背板140平行或垂直设置，从而使灯条120上靠近背板140两端的发光单元110发出的部分光线偏移至显示面板的边角。
拱形包括弧形，将灯条120相对于背板140设置为呈拱形时，可以将灯条120从背板140的两端向边框的内部弯曲形成弧形，使灯条120上的发光单元距离背板140的距离由背板140的两端向中间依次增加。具体如图6所示，图中并未具体画出灯条120上的发光单元110。其中，发光单元110对应弧形分布于灯条120上，从图6中所展示的弧形结构可知，灯条120上的发光单元110距离背板140的距离由背板140的两端向中间依次增加。弧形的灯条120可以更好的调整发光单元110的发光角度。
需要指出的是，弧形只是本实施例可以实现的一种实现方式，本实施例不限于灯条以其他形状实现本实施例所述内容。
在对发光单元110的发光角度进行调整时，需要调整对应边角处的发光单元110，使其发出的光线能够投射并覆盖边角处的B区域，从而避免暗角。同时，在显示装置中，在避免暗角的同时，也要避免弧形灯条的设置导致显示面板底部具有暗影或暗纹，因此，相邻的发光单元110之间发出的光线之间的交 点要至少位于边框处与显示面板对齐的非显示区域部分，这样才能够保证显示面板下面没有暗影或暗纹。
为此，发光单元110对应弧形分布于灯条120上的同时，发光单元110形成的光学法线与对应边框所在平面呈预设的夹角。灯条120上每一个发光单元110形成的光学法线与对应边框所在平面均呈预设的夹角M。如图7所示，呈预设的夹角M可以使发光单元110发出的光线覆盖边角B，从而避免暗角产生。
其中，图7只是具体显示了在灯条上的其中一个发光单元110，该发光单元110位于背板140的其中一端，且为端部的最后一个发光单元。可以知道的是，灯条上的每个发光单元可以根据需要相应的安装设计，对应的，可以通过相应的一些模具调整实现，本实施不再具体详述。
发光单元110形成的光学法线与水平或垂直方向的偏离角度N介于0度到30度之间，相应的，发光单元110形成的光学法线与对应边框所在平面形成的夹角M位于60度至90度之间。可以知道的是，灯条120呈直线为一种特殊的弧形，但本实施例为避免暗角，并不包括这种情况，因此，本实施例中预设的夹角并不包括90度。
发光单元110形成的光学法线与对应边框所在平面形成的夹角位于60度至90度之间足以保证相邻的LED之间发出的光线之间的交点至少位于边框处与显示面板对齐的非显示区域部分，使显示面板下面没有暗影或暗纹。
为避免暗角，还需要进一步对灯条120的弧形进行设置。在另一实施例中，灯条120上靠近背板140两端的发光单元110所在弧形点的曲率半径小于预设最大值，最大值为灯条120上靠近背板140两端的发光单元110发出的与对应光学法线偏移角度最大的光线投射于显示面板形成的边角的顶点时，对应发光单元110所在弧形点的曲率半径值。
曲率半径越大，灯条120弯曲程度越小，灯条120更为靠近背板140，这就容易导致暗角。为此，可以根据显示面板的尺寸，如长度、高度等，计算出在灯条120的弯曲程序最小时可以避免暗角时所对应的最大曲率半径，在设置 时，将弧形灯条对应的曲率半径小于该最大曲率半径即可。
可以知道的是，灯条120所形成的弧形可以为圆形弧或非圆形弧，非圆形弧则会导致不同发光单元所在位置的曲率半径不同，此时，本实施例的曲率半径的预设最大值为灯条上靠近背板两端的发光单元所在弧形点的最大曲率半径。
本实施例中，在弧形灯条上发光单元110可以根据需要分别设置，包括发光单元110在灯条上的位置、倾斜角度等，以及发光单元110之间的距离。
发光单元110在发光的同时，会产生一定的热量，如果这些热量不及时散发，会影响显示装置的寿命，严重时可能导致故障。为此，灯条120与背板140之间填充有散热材料，在发光单元发光的同时，散热材料可以吸收热量并散发至外部，提升显示效果。其中，散热材料可以是散热胶等。
在基于以上设计，还需要进一步避免显示面板暗纹的产生。通常显示面板包括显示区域和与显示区域连接的非显示区域。显示区域为在显示面板正常工作时显示文字、图片、背景的区域，通过显示区域可以对显示的内容进行操作。但在对显示装置进行组装时，部分显示面板需要嵌入至边框中，这部分显示面板主要是与边框之间进行固定，称为非显示区域。显示区域与非显示区域通常具有清晰的边界线。一般而言，灯条上相邻两个发光单元之间的形成的交点必须要覆盖边界线才能够避免显示面板产生暗影或暗纹。本实施例中，灯条上相邻两个发光单元发出的光线形成的部分交点位于显示区域与非显示区域之间的边界线或非显示区域上。其中，部分交点位于显示区域与非显示区域之间的边界线或非显示区域上，包括：有且仅有一个交点位于显示区域与非显示区域之间的边界线上。相邻的两个发光单元之间的光线交点位于边界上或非显示区域，均可以避免显示面板产生暗影或暗纹。
本实施例还提供了一种显示装置，包括：
显示面板；
边框，边框内设置有背板140；
背光模块，背光模块包括用于向显示面板投射光线的光源；
光源包括分布有若干发光单元110的灯条120；其中：
灯条120固定于背板140上，且灯条120上的发光单元110相对于背板140倾斜设置，使灯条120上靠近背板140两端的发光单元110发出的部分光线偏移至显示面板的边角。
以上所述显示装置中，通过使灯条上的发光单元相对于背板倾斜设置，可以使灯条上靠近背板两端的发光单元发出的部分光线偏移至显示面板的边角，从而避免显示面板形成的边角成为暗角，提高了显示效果，更有利于显示和观察。
其中，将LED灯110打件在直条的电路板上可以做成灯条，电路板为柔性材料，具有一定的延展性和弯折性。做好的灯条固定在背板的侧面可以为显示装置提供光亮。通常的，发光单元具有一定的发光角度(发光角度通常为发光单元产生的光线偏离光学法线的角度)，两侧的发光角度与光学法线对称，由于边框角落(边角)难以设置发光单元，容易导致边角处形成暗角。因此，通过调整发光单元的发光角度可以改变暗角现象。
其中，灯条120上的发光单元110相对于背板倾斜设置，包括：灯条120中间至对应侧的发光单元110向对应侧显示面板形成的边角倾斜。位于灯条120中间的发光单元110可以与对应侧边框平行设置。图3中给出了将灯条设置于其中一侧边框的示意图，位于灯条中间的发光单元110平行于对应侧的边框，从灯条中间向左侧的发光单元110的右侧垫高倾斜，从灯条中间向右侧的发光单元110的左侧垫高倾斜。倾斜后的发光单元110形成的光学法线与对应边框所在平面呈预设的夹角，预设的夹角位于60度至90度之间。其中，发光单元110在设计时，可以将其设计为左高右低结构，或者右高左低的结构，从而方便显示装置的组装。
需要指出的是，图3只是提供了其中一侧边框的示意图，以上所述左侧与右侧均是相对而言，在其他对应侧的边框也可以采用上部或下部等方位词进行 限定。
如图4所示，灯条上靠近背板两端的发光单元110发出的部分光线偏移至显示面板的边角，发光单元110发出的光线覆盖B区域，可以有效避免暗角的产生，提升显示效果。具体的，最左侧发光单元发出的光线可以覆盖对应侧的暗角区域，最右侧发光单元发出的光线亦可覆盖对应侧的暗角区域。其中，图4中所示最左侧发光单元110发出的光线可以为偏离对应光学法线角度最大的光线，最右侧发光单元发出的光线可以为偏离对应光学法线角度最大的光线，需要保证的是，最右侧或最左侧LED发出的偏离对应光学法线角度最大的光线与对应边角的顶点重合，或者投射于边角的顶点外部，从而避免暗角的产生。
在对发光单元的发光角度进行调整时，需要调整对应边角处的发光单元，使其发出的光线能够投射并覆盖边角处的B区域，从而避免暗角。同时，在显示装置中，在避免暗角的同时，也要避免发光单元的倾斜设置导致显示面板底部具有暗影或暗纹，因此，相邻的LED之间发出的光线之间的交点要至少位于边框处与显示面板对齐的非显示区域部分，这样才能够保证显示面板下面没有暗影或暗纹。
通常显示面板包括显示区域和与显示区域连接的非显示区域。显示区域为在显示面板正常工作时显示文字、图片、背景的区域，通过显示区域可以对显示的内容进行操作。但在对显示装置进行组装时，部分显示面板需要嵌入至边框中，这部分显示面板主要是与边框之间进行固定，称为非显示区域。显示区域与非显示区域通常具有清晰的边界线。一般而言，灯条上相邻两个发光单元之间的形成的交点必须要覆盖边界线才能够避免显示面板产生暗影或暗纹。本实施例中，灯条上相邻两个发光单元发出的光线形成的部分交点位于显示区域与非显示区域之间的边界线或非显示区域上。其中，部分交点位于显示区域与非显示区域之间的边界线或非显示区域上，包括：有且仅有一个交点位于显示区域与非显示区域之间的边界线上。相邻的两个发光单元之间的光线交点位于边界上或非显示区域，均可以避免显示面板产生暗影或暗纹。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。

Claims (20)

  1. 一种显示装置，包括：
    显示面板；
    边框，所述边框内设置有背板；
    背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；
    所述光源包括分布有若干发光单元的灯条；
    其中，所述灯条固定于所述背板上，且所述灯条与所述背板为相同的形状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
  2. 根据权利要求1所述的显示装置，其中，所述灯条与所述背板从所述边框的两端向内部弯曲形成相同的弧状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
  3. 根据权利要求1所述的显示装置，其特征在于，所述发光单元所在灯条与对应背板的两端相对于所述边框均倾斜设置，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
  4. 根据权利要求3所述的显示装置，其中，所述发光单元形成的光学法线与对应边框所在平面呈预设的夹角。
  5. 根据权利要求4所述的显示装置，其中，所述预设的夹角位于60度至90度之间。
  6. 根据权利要求3所述的显示装置，其中，所述灯条上靠近所述背板两端的发光单元所在弧形点的曲率半径小于预设最大值，所述最大值为所述灯条上靠近所述背板两端的发光单元发出的与对应光学法线偏移角度最大的光线投射于所述显示面板的边角的顶点时，对应所述发光单元所在弧形点的曲率半径值。
  7. 根据权利要求1所述的显示装置，其中，所述灯条与所述背板之间填充有散热材料。
  8. 根据权利要求1所述的显示装置，其中，所述显示面板包括显示区域和与所述显示区域连接的非显示区域，所述灯条上相邻两个发光单元发出的光线形成的部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上。
  9. 根据权利要求8所述的显示装置，其中，所述部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上，包括：
    有且仅有一个交点位于所述显示区域与非显示区域之间的边界线上。
  10. 所述发光单元弧形分布于灯条上，所述发光单元距离对应边框的距离由边框的两端向中间依次增加。
  11. 根据权利要求1所述的显示装置，其中，在所述背板与所述边框之间添加有填充材料以固定所述背板和所述灯条。
  12. 一种显示装置，包括：
    显示面板；
    边框，所述边框内设置有背板；
    背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；
    所述光源包括分布有若干发光单元的灯条；
    其中，所述灯条与所述背板从所述边框的两端向内部弯曲形成相同的弧状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角；或者
    发光单元所在灯条与对应背板的两端相对于所述边框均倾斜设置，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角。
  13. 根据权利要求12所述的显示装置，其中，所述灯条与所述背板之间填充有散热材料。
  14. 根据权利要求12所述的显示装置，其中，所述显示面板包括显示区域和与所述显示区域连接的非显示区域，所述灯条上相邻两个发光单元发出的 光线形成的部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上。
  15. 根据权利要求12所述的显示装置，其中，所述部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上，包括：
    有且仅有一个交点位于所述显示区域与非显示区域之间的边界线上。
  16. 根据权利要求12所述的显示装置，其中，所述发光单元形成的光学法线与水平或垂直方向的偏离角度N介于0度到30度之间。
  17. 根据权利要求16所述的显示装置，其中，在所述背板与所述边框之间添加有填充材料以固定所述背板和所述灯条。
  18. 根据权利要求17所述的显示装置，其中，所述发光单元距离对应边框的距离由边框的两端向中间依次增加。
  19. 根据权利要求18所述的显示装置，其中，所述发光单元形成的光学法线与对应边框所在平面呈预设的夹角，所述预设的夹角位于60度至90度之间。
  20. 一种显示装置，包括：
    显示面板，所述显示面板包括显示区域和与所述显示区域连接的非显示区域；
    边框，所述边框内设置有背板；
    背光模块，所述背光模块包括用于向所述显示面板投射光线的光源；
    所述光源包括分布有若干发光单元的灯条；
    其中，所述灯条固定于所述背板上，所述灯条与所述背板之间填充有散热材料，且所述灯条与所述背板为相同的形状，所述灯条与所述背板从所述边框的两端向内部弯曲形成相同的弧状，使所述灯条上靠近所述背板两端的发光单元发出的部分光线偏移至所述显示面板的边角；所述发光单元形成的光学法线与对应边框所在平面呈预设的夹角；所述预设的夹角位于60度至90度之间；所述灯条上靠近所述背板两端的发光单元所在弧形点的曲率半径小于预设最 大值，所述最大值为所述灯条上靠近所述背板两端的发光单元发出的与对应光学法线偏移角度最大的光线投射于所述显示面板的边角的顶点时，对应所述发光单元所在弧形点的曲率半径值；所述灯条上相邻两个发光单元发出的光线形成的部分交点位于所述显示区域与非显示区域之间的边界线或非显示区域上，有且仅有一个交点位于所述显示区域与非显示区域之间的边界线上。
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