CN111650784A - Backlight module, display device and preparation method, control method and use method of display device - Google Patents
Backlight module, display device and preparation method, control method and use method of display device Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title abstract description 6
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- 239000012788 optical film Substances 0.000 claims abstract description 66
- 238000004806 packaging method and process Methods 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000010408 film Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 238000005538 encapsulation Methods 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 17
- 239000010410 layer Substances 0.000 description 87
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 230000003139 buffering effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 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
- G02F1/133603—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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a backlight module, a display device, a preparation method, a control method and a use method thereof, wherein the backlight module comprises: the light-emitting panel is provided with a light-emitting area and a packaging area positioned on the peripheral side of the light-emitting area, the light-emitting panel comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, and the second substrate is arranged opposite to the first substrate; the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area; the plurality of light-emitting elements are positioned between the first substrate and the second substrate and distributed in the light-emitting areas; and at least one optical film layer is positioned on the light emitting surface side of the light emitting panel, wherein the at least one optical film layer is detachably connected with the light emitting panel. The invention is convenient for realizing the display of the backlight module, improves the display effect of the backlight module and prevents the display device from generating potential safety hazard due to the fact that the display device cannot display information in real time.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module, a display device, a preparation method, a control method and a use method of the display device.
Background
The liquid crystal display device comprises a display panel and a backlight module, wherein the backlight module provides a light source to enable the display panel to emit light for display.
In the use process of the liquid crystal display device, if the display panel is in a black screen state and cannot display information, some potential safety hazards are easily caused, for example, when the liquid crystal display device is a vehicle-mounted display device, if the liquid crystal display device cannot display information in real time, great potential safety hazards are caused when a vehicle runs.
Disclosure of Invention
The invention provides a backlight module, a display device, a manufacturing method, a control method and a using method of the display device, which are convenient for realizing display of the backlight module, improve the display effect of the backlight module and prevent potential safety hazards caused by the fact that the display device cannot display information in real time.
In one aspect, an embodiment of the present invention provides a backlight module, including: the light-emitting panel is provided with a light-emitting area and a packaging area positioned on the peripheral side of the light-emitting area, the light-emitting panel comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, and the second substrate is arranged opposite to the first substrate; the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area; the plurality of light-emitting elements are positioned between the first substrate and the second substrate and distributed in the light-emitting areas; and at least one optical film layer is positioned on the light emitting surface side of the light emitting panel, wherein the at least one optical film layer is detachably connected with the light emitting panel.
On the other hand, the embodiment of the invention also provides a display device, which comprises a display panel and a backlight module, wherein the display panel comprises a third substrate and a fourth substrate which are arranged oppositely, and a display medium layer which is clamped between the third substrate and the fourth substrate, and a light emergent surface of the display panel is positioned on the third substrate; the backlight module is located on a side of the fourth substrate away from the third substrate, and the backlight module is as described in any of the above embodiments.
In another aspect, an embodiment of the present invention further provides a method for manufacturing a display device, including: forming a light-emitting panel, wherein the light-emitting panel is provided with a light-emitting area and a packaging area positioned on the peripheral side of the light-emitting area, the light-emitting panel comprises a first substrate, a second substrate, a packaging layer and a plurality of light-emitting elements, the first substrate and the second substrate are oppositely arranged, the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area, and the plurality of light-emitting elements are positioned between the first substrate and the second substrate and scattered in the light-emitting area; at least one optical film layer, the display panel and the light-emitting panel are detachably connected.
In another aspect, an embodiment of the present invention further provides a control method for a display device, which is used for controlling the display device of any one of the above embodiments to perform display, and the display device includes a first display mode in which display is performed by a display panel and a second display mode in which display is performed by a light-emitting panel.
In another aspect, an embodiment of the present invention further provides a method for using a display device, which is used for displaying by using the display device of any of the foregoing embodiments, where the display device includes a first display mode and a second display mode, and the method includes: in a first display mode, displaying through a display panel; and separating the light-emitting panel from the at least one optical film layer and the display panel, and displaying through the light-emitting panel to enable the display device to be in a second display mode.
According to the backlight module, the display device and the preparation method, the control method and the using method of the backlight module, the backlight module comprises the light-emitting panel and the at least one optical film layer which are detachably connected, so that the light-emitting panel is conveniently separated from the at least one optical film layer, the light-emitting panel can be separated from the at least one optical film layer for light-emitting display, the display effect of the light-emitting panel is prevented from being influenced when the at least one optical film layer covers the light-emitting panel, the display effect of the light-emitting panel is improved, meanwhile, the light-emitting panel is arranged for direct display, and the potential safety hazard caused by the fact that the display panel cannot display.
Furthermore, the light-emitting panel comprises the first substrate and the second substrate which are arranged oppositely, and the packaging layer and the light-emitting elements which are arranged between the first substrate and the second substrate, so that the light-emitting elements are packaged between the first substrate and the second substrate, the overall strength of the light-emitting panel is improved, the protection performance of the light-emitting panel on the light-emitting elements during display is effectively improved, the light-emitting elements are prevented from being damaged, and the stability of the light-emitting panel is improved.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
FIG. 1 is a top view of a backlight module according to an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along the line M-M in FIG. 1;
fig. 3 is a top view of a light emitting panel provided by another embodiment of the present invention;
fig. 4 is a cross-sectional view in the N-N direction of a light emitting panel shown in fig. 3;
fig. 5 is a cross-sectional view in the N-N direction of another luminescent panel shown in fig. 3;
FIG. 6 is a schematic diagram of a light path of light emitted from a light emitting element through a bump structure according to an embodiment of the present invention;
FIG. 7 is a schematic view of another light path of light emitted from a light emitting element through a bump structure;
FIG. 8 is a schematic view of another light path through a bump structure for a light emitting element according to an embodiment of the present invention;
FIG. 9 is an enlarged schematic view at Q of a light emitting panel shown in FIG. 3;
FIG. 10 is an enlarged schematic view at Q of another light emitting panel shown in FIG. 3;
FIG. 11 is an enlarged schematic view at Q of yet another light emitting panel shown in FIG. 3;
FIG. 12 is a schematic cross-sectional view of a display device provided in accordance with an embodiment of the present invention;
fig. 13 is a schematic control diagram of a display device according to an embodiment of the present invention;
fig. 14 is a schematic view of a display screen of a light-emitting panel according to an embodiment of the present invention.
Fig. 15 is a schematic flow chart of a manufacturing method of a display device according to an embodiment of the present invention;
fig. 16 is a flowchart illustrating a method for using a display device according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
On electronic equipment such as a vehicle-mounted display device, important information such as driving speed and oil quantity needs to be displayed in real time, and potential safety hazards are prevented from being generated in the driving process. In some embodiments, the display device may be a liquid crystal display device, and the liquid crystal display device includes a display panel and a backlight module, which are disposed opposite to each other, and the backlight module provides a light source to realize display through the display panel.
When the display panel breaks down, for example, when the display panel is blacked, the light emitted by the backlight module can not penetrate through the display panel, so that the display device can not display key information in real time, and the operation of a vehicle is easy to generate huge potential safety hazards.
In order to solve the above problems, embodiments of the present invention provide a backlight module 100, a display device 1000, a manufacturing method of the display device, a control method of the display device, and a using method of the display device. The backlight module 100, the display device 1000, the manufacturing method of the display device, the control method of the display device, and the using method of the display device according to the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2 together, fig. 1 is a top view of a backlight module according to an embodiment of the invention, and fig. 2 is a cross-sectional view taken along a direction M-M in fig. 1. The embodiment of the invention provides a backlight module 100, which comprises a light-emitting panel 10 and at least one optical film layer 20. At least one optical film layer 20 is located at the light exit surface side of the light-emitting panel 10, wherein the at least one optical film layer 20 is detachably connected to the light-emitting panel 10.
The light-emitting panel 10 has a light-emitting region LA and a package region PA on an outer peripheral side of the light-emitting region LA, and the light-emitting panel 10 includes a first substrate 11, a second substrate 12, a package layer 13, and a plurality of light-emitting elements 14. The second substrate 12 is disposed opposite to the first substrate 11, the encapsulation layer 13 is disposed between the first substrate 11 and the second substrate 12 and in the encapsulation area PA, and the light emitting elements 14 are disposed between the first substrate 11 and the second substrate 12 and distributed in the light emitting area LA. Alternatively, the plurality of light emitting elements 14 may be uniformly dispersed in the light emitting region LA to improve the light emission uniformity of the light emitting panel 10.
According to the backlight module 100 of the embodiment of the invention, the light-emitting panel 10 is detachably connected with the at least one optical film layer 20, so that the light-emitting panel 10 is conveniently separated from the at least one optical film layer 20, the light-emitting panel 10 can be separated to perform light-emitting display, and the display effect of the light-emitting panel 10 is prevented from being influenced when the at least one optical film layer 20 covers the light-emitting panel 10, thereby improving the display effect of the light-emitting panel 10. Meanwhile, by directly displaying through the light-emitting panel 10, when the backlight module 100 is combined with the display panel 200, the safety hazard caused by the display panel 200 not being able to display can be prevented. Further, since the plurality of light emitting elements 14 are packaged between the first substrate 11 and the second substrate 12, the overall strength of the light emitting panel 10 is improved, the protection performance of the light emitting elements 14 when the light emitting panel 10 performs display is effectively improved, and the light emitting elements 14 are prevented from being damaged.
In order to provide the second substrate 12 and the first substrate 11 with high supporting strength and prevent the light emitting panel 10 from being damaged by the light emitting element 14 due to external stress when displaying independently, the second substrate 12 may be made of glass, and the first substrate 11 may be made of glass. In order to enable the first substrate 11 and the second substrate 12 to have a certain buffering performance, the encapsulation layer 13 between the first substrate 11 and the second substrate 12 may be formed by foam, and the foam has a certain buffering performance, so that when the second substrate 12 or the first substrate 11 is stressed, a certain buffering effect is achieved.
Referring to fig. 3 to 5 together, fig. 3 is a plan view of a light emitting panel according to another embodiment of the present invention, fig. 4 is a cross-sectional view taken along a direction N-N of a light emitting panel shown in fig. 3, and fig. 5 is a cross-sectional view taken along a direction N-N of another light emitting panel shown in fig. 3. Since the light-emitting elements 14 are scattered in the light-emitting region LA and the light-emitting elements 14 are spaced apart from each other, in order to prevent the light in the area between the light-emitting elements 14 from being dark, which may cause uneven brightness of the light-emitting panel 10 during light-emitting display, in some embodiments, the light-emitting surface of the backlight module 100 is located on the second substrate 12, the backlight module 100 further includes a plurality of protruding structures 15, and the protruding structures 15 are located on the surface of the second substrate 12 facing the light-emitting elements 14, that is, the protruding structures 15 extend from the surface of the second substrate 12 facing the light-emitting elements 14 to the direction close to the light-emitting elements 14. By arranging the convex structures 15 on the second substrate 12, the light path of the light emitted by the light emitting elements 14 at the convex structures 15 can be changed, so that the convex structures 15 can diffuse the light emitting angle of the light emitting elements 14, and the phenomenon of uneven brightness when the light emitting panel 10 emits light for display due to the fact that light rays in the areas among the light emitting elements 14 are dark is effectively prevented, and the light emitting uniformity of the light emitting panel 10 is improved.
In some embodiments, the protruding structures 15 are disposed opposite to the light emitting elements 14 as shown in fig. 4, or the orthographic projection of the protruding structures 15 on the second substrate 12 is located between the orthographic projections of two adjacent light emitting elements 14 on the second substrate 12 as shown in fig. 5. With the above arrangement, the positional relationship between the convex structure 15 and the light emitting element 14 can be set appropriately so that the convex structure 15 effectively diffuses the light emission angle of the light emitting element 14, thereby improving the condition of the unevenness of brightness and darkness in the light emitting panel 10.
In order to facilitate the fabrication of the protruding structures 15 and to enable the protruding structures 15 to be stably connected to the second substrate 12, in some embodiments, as shown in fig. 5, the protruding structures 15 are integrally formed with the second substrate 12, and at this time, the protruding structures 15 and the second substrate 12 are made of the same material. In a specific implementation, a surface of the second substrate 12 facing the light emitting elements 14 may be etched to form a plurality of protruding structures 15. It is understood that, as shown in fig. 4, the protrusion structure 15 may also be fabricated separately from the second substrate 12, and the protrusion structure 15 is connected to the second substrate 12 through an optical adhesive, in which case, the materials of the protrusion structure 15 and the second substrate 12 may be the same or different, as long as the protrusion structure 15 effectively diffuses the light emitted by the light emitting element 14.
When the protruding structures 15 are disposed on the second substrate 12, in some embodiments, the angle at which light emitted from the light emitting element 14 can be diffused by exiting through the plurality of protruding structures 15 is greater than or equal to 10.5 °. Through the above arrangement, the light emitting angle of the light emitting element 14 can be effectively diffused, the display effect of the light emitting panel 10 is improved, and meanwhile, when the light emitting panel 10 is applied to the display device 1000, a more uniform light source can be provided for the display panel 200, so that the display effect of the display panel 200 is improved.
Referring to fig. 6 to 8, fig. 6 is a schematic view of a light path of light emitted by a light emitting device passing through a bump structure according to an embodiment of the present invention, fig. 7 is a schematic view of another light path of light emitted by a light emitting device passing through a bump structure, and fig. 8 is a schematic view of another light path of a light emitting device passing through a bump structure according to an embodiment of the present invention. The principle that the light emitted from the light emitting element 14 exits through the plurality of convex structures 15 and can be diffused by an angle of 10.5 ° or more is explained below with reference to fig. 6 to 8, and in fig. 6 to 8, the convex structures 15 are calculated to be equivalent to hemispherical structures because of their small structural size.
In some embodiments, the light emitting angle of the light emitting element 14 is 0 ° to 120 °, and the light emitting angle of the light emitting element 14 refers to an angle at which most of the light emitted by the light emitting element 14 as a light source is distributed. When the outermost light of the light emitting element 14 just passes the edge of the convex structure 15, as shown in fig. 6, the dotted line with an arrow in the figure indicates the light transmission path emitted from the light emitting element 14, and the light is refracted while passing through the convex structure 15, according to the refraction law of light: sinA/sinB ═ na/nbWherein, a is an angle between the light emitted from the light emitting device 14 and the surface of the second substrate 12 facing the light emitting device 14 when the light irradiates the protrusion structure 15, B is an angle after the light passes through the second substrate 12 and enters the air to be refracted, and n is an angle between the light and the surface of the second substrate 12 and the surface of the light emitting device 14 when the light passes through the protrusion structureaIs the refractive index of the second substrate, nbIs the refractive index of air. It can be known from the above-mentioned refraction law that the light emitted from the light emitting element 14 passes through the plurality of projectionsThe angle C at which the structure 15 can be diffused later is a-arcsin [ sinA/(n)a/nb)]。
When the second substrate 12 is made of glass, it is known that the angle at which light emitted from the light emitting element 14 can be diffused after passing through the plurality of projection structures 15 is 10.5 ° by calculation based on the refractive index of the air layer being 1, the refractive index of glass being 1.5, and the maximum light emitting angle of the light emitting element 14 being 120 °.
As shown in fig. 7, in some embodiments, the convex structure 15 is provided directly opposite to the light emitting element 14, where the center of the convex structure 15 coincides with the center of the light emitting element 14, and the equivalent radius R of the cross section of the convex structure 15 in the direction perpendicular to the plane of the light emitting panel 10 is1A distance L between the light-emitting surface of the light-emitting element 14 and the surface of the second substrate 12 facing the light-emitting element 141And the distance P between two adjacent bump structures 151Satisfies the relation 1:
L1*tan(θ1/2)≤P1＜L1*tan(θ1/2)+R1formula 1
Wherein, theta1The distance P between two adjacent convex structures 15 is the maximum light-emitting angle of the light-emitting element 141It means a distance between two points of the adjacent two convex structures 15 at the same position in the plane direction of the light-emitting panel 10, for example, a distance between centers of circles of the adjacent two convex structures 15 in the cross section of the convex structures 15 is a distance P1 between the adjacent two convex structures 15. The convex structure 15 is calculated as an equivalent hemispherical structure due to its small structural size, when the equivalent radius R of the convex structure 15 in a cross section in a direction perpendicular to the plane of the light-emitting panel 10 is calculated1Is the distance between the point on the edge of the curved surface of the hemispherical structure and the center of the sphere. Through the arrangement, the position of the protruding structure 15 and the size of the protruding structure 15 can be reasonably arranged, so that the diffusion of the protruding structure 15 to the light-emitting angle of the light-emitting element 14 is effectively improved.
Specifically, as shown in fig. 7, when the light beam at the outermost periphery of the light emitting device 14 just passes through the center of the convex structure, the light beam at the outermost periphery is a critical point where no refraction occurs, and when the light beam emitted by the light emitting device 14 passes through the convex structure shown in fig. 7, the light beam is usedWhen the corresponding position of the convex structure filled with the filling line, the light can be refracted, and for convenience of description, this partial region is referred to as a refraction region, where the region filled with the filling line of the convex structure is a region where the light emitting region of the light emitting element 14 overlaps with the convex structure 15 when the light at the outermost periphery of the light emitting element 14 passes through the center of the convex structure. As shown in fig. 8, when a light ray emitted from one of the light emitting elements 14 passes through the refraction region, an incident angle a ═ arccot ((P)1-R1)/L1) The angle C of the light diffused after passing through the convex structure 15 satisfies the following relation:
C＝A-B＝arccot((P1-R1)/L1)-arcsin(sin(arccot((P1-R1)/L1)/(na/nb)))，
wherein B is an angle between the light passing through the protrusion structure 15 and the surface of the second substrate 12 facing the light emitting device 14.
With continued reference to fig. 5, in some embodiments, the orthographic projection of the convex structure 15 on the second substrate 12 is between the orthographic projections of two adjacent light-emitting elements 14 on the second substrate 12, and the equivalent radius R of the cross section of the convex structure 15 along the direction perpendicular to the plane of the light-emitting panel 10 is2A distance L between the light-emitting surface of the light-emitting element 14 and the surface of the second substrate 12 facing the light-emitting element 142And the distance P between two adjacent bump structures 152Satisfies relation 2:
2L2*tan(θ2/2)≤P2＜2L2*tan(θ2/2)+2R2formula 2
Wherein, theta2Is the maximum light emitting angle of the light emitting element 14. Through the above arrangement, the position of the protruding structure 15 and the size of the protruding structure 15 can be reasonably set, so that the diffusion of the protruding structure 15 to the light-emitting angle of the light-emitting element 14 is effectively improved, optionally, the distance between the orthographic projection of the protruding structure 15 on the second substrate 12 and the orthographic projection of the two adjacent light-emitting elements 14 on the second substrate 12 is equal, at this time, the orthographic projection of the protruding structure 15 on the second substrate 12 is located on the orthographic projection of the two adjacent light-emitting elements 14 on the second substrate 12In the middle. The principle of the relevant dimensions of the raised structures 15 in fig. 5 is similar to the principle of the relevant dimensions of the raised structures 15 in fig. 4 and will not be described again.
Referring to fig. 9 to 11 together, fig. 9 is an enlarged schematic view of one of the luminescent panels shown in fig. 3 at Q, fig. 10 is an enlarged schematic view of another one of the luminescent panels shown in fig. 3 at Q, and fig. 11 is an enlarged schematic view of still another one of the luminescent panels shown in fig. 3 at Q. In some embodiments, the light emitting elements 14 may be arranged in multiple rows and columns to facilitate fabrication and routing of the light emitting elements 14. When the light-emitting panel 10 includes the convex structures 15, the convex structures 15 may be spaced between adjacent light-emitting elements 14, so that the light emitted from the light-emitting panel 10 is more uniform.
In order to further homogenize the light emitted from the light-emitting panel 10, in some embodiments, the plurality of light-emitting elements 14 are arrayed along the first direction X to form a plurality of light-emitting unit rows, the plurality of light-emitting unit rows are arranged along a second direction Y, the second direction Y is perpendicular to the first direction X, and at least some of the light-emitting elements 14 of two adjacent light-emitting unit rows are arranged along the first direction X in a staggered manner. Through the arrangement, the plurality of light emitting elements 14 are arranged in a staggered manner, so that the light emitted by the light emitting elements 14 is distributed more uniformly in the light emitting area LA, and the dark area caused by the fact that the plurality of light emitting elements 14 are arranged oppositely to each other is effectively prevented, and the arrangement mode of the light emitting elements 14 is convenient for arranging the wiring structure on the light emitting panel 10 and connecting the wiring structure with the electrodes of the light emitting elements 14.
As shown in fig. 11, in practical implementation, the light emitting elements 14 in every two adjacent light emitting unit rows may be arranged to be shifted along the first direction X, in this case, the light emitting elements 14 in the odd-numbered light emitting unit rows may be arranged to be opposite to each other along the first direction X, the light emitting elements 14 in the even-numbered light emitting unit rows may be arranged to be opposite to each other along the first direction X, and the light emitting elements 14 in the odd-numbered rows and the light emitting elements 14 in the even-numbered rows are arranged to be shifted from each other, and optionally, each light emitting element 14 in the even-numbered rows is located between every two adjacent light emitting elements 14 in the odd-numbered rows. It should be understood that the arrangement of the light emitting elements 14 is not limited in the present invention, as long as at least some of the light emitting elements 14 are arranged in a staggered manner, so as to reduce the occurrence of uneven brightness in the light emitting area LA.
In order to improve the light extraction efficiency of the light-emitting panel 10, in some embodiments, the light extraction surface is located on the second substrate 12, and the second substrate 12 is made of a transparent material, and the transparent material includes glass. With the above arrangement, light emitted from the light emitting element 14 can pass through the second substrate 12, and the influence of the second substrate 12 on the light is reduced, thereby improving the display effect of the light emitting panel 10. Meanwhile, when the transparent material is glass, the overall strength of the light-emitting panel 10 can be improved, so that the second substrate 12 can effectively protect the light-emitting element 14, and meanwhile, the supporting structures such as the bezel in the backlight module can be omitted, which is convenient for realizing the lightness and thinness of the backlight module 100 and the display device 1000.
In order to better transmit the light emitted from the backlight module 100 to the display panel 200 when the backlight module 100 is applied to the display device 1000, in some embodiments, the at least one optical film layer 20 includes one or a combination of a scattering layer 21, a reflective layer 22, a color conversion layer 23 and a brightness enhancement film 24, which are sequentially disposed in a direction away from the light-emitting panel 10. Optionally, at least one optical film layer 20 may include a combination of a scattering layer 21, a reflective layer 22, a color conversion layer 23 and a brightness enhancement film 24 sequentially arranged in a direction away from the light-emitting panel 10 to achieve more efficient transmission of light in the backlight module 100 to the display panel 200.
In a specific implementation, the light emitting elements 14 in the backlight module 100 may be light emitting elements emitting blue light, in order to make the light emitted from the backlight module 100 be white light, the reflective layer 22 may be a reflective film reflecting red light and reflecting green light, and after the blue light emitted from the light emitting elements 14 sequentially passes through the scattering layer 21 and the reflective layer 22, the reflective layer 22 may correct coordinates of white points, so that the light passes through the color conversion layer 23 to make the backlight module 100 emit white light. The brightness enhancement film 24 may be a prism film to collect the light emitted from the backlight module 100.
Alternatively, the light emitting elements 14 may be Micro light emitting elements 14 (Mini-LEDs or Micro-LEDs), the planar size of the Micro light emitting elements 14 is smaller, and a greater number of Micro light emitting elements 14 can be arranged in the light emitting area LA with the same area, so as to improve the display effect of the light emitting panel 10, and when the backlight module 100 is applied to the display panel 200, the backlight module 100 can better provide a light source for the display panel 200.
In summary, according to the backlight module 100 of the embodiment of the invention, the backlight module 100 includes the light-emitting panel 10 and the at least one optical film 20 that are detachably connected, so that the light-emitting panel 10 is easily separated from the at least one optical film 20, the light-emitting panel 10 can be separated from the at least one optical film 20 for light-emitting display, and the display effect of the light-emitting panel 10 is prevented from being affected when the at least one optical film 20 covers the light-emitting panel 10, thereby improving the display effect of the light-emitting panel 10, and meanwhile, by directly displaying through the light-emitting panel 10, the safety hazard caused by the display panel 200 being unable to display when the backlight module 100 is combined with.
Further, since the light-emitting panel 10 includes the first substrate 11 and the second substrate 12 which are oppositely disposed, and the encapsulating layer 13 and the plurality of light-emitting elements 14 which are located between the first substrate 11 and the second substrate 12, the plurality of light-emitting elements 14 are encapsulated between the first substrate 11 and the second substrate 12, the overall strength of the light-emitting panel 10 is improved, the protection performance of the light-emitting panel 10 on the light-emitting elements 14 during displaying is effectively improved, the light-emitting elements 14 are prevented from being damaged, and the stability of the light-emitting panel 10 is improved.
Referring to fig. 12, fig. 12 is a schematic cross-sectional view of a display device according to an embodiment of the invention. The embodiment of the present invention further provides a display device 1000, which includes a display panel 200 and a backlight module 100, wherein the display panel 200 includes a third substrate 31 and a fourth substrate 32 that are oppositely disposed, and a display medium layer 33 that is sandwiched between the third substrate 31 and the fourth substrate 32, and a light exit surface of the display panel 200 is located on the third substrate 31. The backlight module 100 is located on a side of the fourth substrate 32 away from the third substrate 31, and the backlight module 100 is the backlight module 100 in any of the above embodiments. Optionally, the third substrate 31 may be a color film substrate, the fourth substrate 32 may be an array substrate, and the display medium layer 33 may be a liquid crystal layer, and display of the display panel 200 is realized by deflection of liquid crystal molecules in the liquid crystal layer.
According to the display device 1000 of the embodiment of the invention, the backlight module 100 includes the light-emitting panel 10 and the at least one optical film 20 which are detachably connected, so that the light-emitting panel 10 is conveniently separated from the at least one optical film 20, the light-emitting panel 10 is made to be independent for light-emitting display, and the at least one optical film 20 is prevented from influencing the display effect of the light-emitting panel 10, thereby improving the display effect of the light-emitting panel 10, and simultaneously, the potential safety hazard caused by the fact that the display panel 200 cannot display when the backlight module 100 is combined with the display panel 200 is prevented.
When the backlight module 100 is applied to the display device 1000, in order to directly display on the light emitting panel 10, in some embodiments, at least one optical film 20 is connected to the fourth substrate 32 of the display panel 200, and the display panel 200 is detachably connected to the light emitting panel 10, so that at least one optical film 20 is detachably connected to the light emitting panel 10. With the above arrangement, when the display panel 200 malfunctions, for example, when the display panel 200 is blacked out, the display panel 200 in the display device 1000 can be separated from the light emitting panel 10, so that the light emitting panel 10 can independently perform display.
Illustratively, the display panel 200 may be fixedly connected to the at least one optical film layer 20 by an optical adhesive to form the display structure 300, and the display structure 300 may be detachably connected to the light-emitting panel 10, for example, the display panel 200 and the at least one optical film layer 20 may be integrally connected to the light-emitting panel 10, so as to facilitate separation of the light-emitting panel 10 from the display panel 200 and the at least one optical film layer 20 when the light-emitting panel 10 is required to display, for example, when the display panel 200 is blacked out or the display device 1000 is in a power consumption saving mode. In specific implementation, a fastening structure may be disposed at a frame of the light-emitting panel 10, and a connection structure adapted to the fastening structure is disposed at a frame of the display structure 300, so as to detachably connect the display structure 300 and the light-emitting panel 10 by mutually fastening the connection structure and the fastening structure.
Alternatively, the display panel 200 may be detachably connected to at least one optical film layer 20, and the at least one optical film layer 20 is detachably connected to the light emitting panel 10, so that the display panel 200, the at least one optical film layer 20, and the light emitting panel 10 may be switched between an assembled state and a separated state, which facilitates switching of multiple display modes of the display device 1000.
Referring to fig. 13, fig. 13 is a schematic diagram illustrating a control principle of a display device according to an embodiment of the present invention. In some embodiments, the display device 1000 further includes a control component Host and a timing controller Tcon, and the control component Host is connected to the display panel 200 and the backlight module 100 through the timing controller Tcon respectively to control the display panel 200 and the backlight module 100 to be in a working state, so as to implement normal display of the display panel 200. In addition, the control component Host can also be directly connected with the backlight module 100, and when the display panel 200 fails, the control component Host can directly control the backlight module 100 to display.
Exemplarily, referring to fig. 14, fig. 14 is a schematic view of a display screen of a light-emitting panel according to an embodiment of the present invention. When the display device 1000 is applied to the field of vehicle-mounted display, the light-emitting panel 10 can display one or a combination of the speed, the oil quantity, the time and the characters of the vehicle, so that a driver is prompted to check the running state of the vehicle in real time, and the potential safety hazard is effectively improved.
Referring to fig. 15, fig. 15 is a schematic flow chart illustrating a manufacturing method of a display device according to an embodiment of the invention. The embodiment of the invention also provides a preparation method of the display device, which comprises the following steps:
and S110, forming the luminescent panel 10.
The light emitting panel 10 includes a light emitting area LA and a package area PA located at an outer peripheral side of the light emitting area LA, the light emitting panel 10 includes a first substrate 11, a second substrate 12, a package layer 13 and a plurality of light emitting elements 14, the first substrate 11 and the second substrate 12 are disposed opposite to each other, the package layer 13 is located between the first substrate 11 and the second substrate 12 and located in the package area PA, and the plurality of light emitting elements 14 are located between the first substrate 11 and the second substrate 12 and distributed in the light emitting area LA. By manufacturing and forming the light-emitting panel 10, the light-emitting panel 10 has better strength, and the light-emitting element 14 is packaged between the first substrate 11 and the second substrate 12, and compared with a case that a protective layer is arranged on the side, away from the first substrate 11, of the light-emitting element 14, the second substrate 12 can protect the light-emitting element 14 more effectively.
And S120, detachably connecting the at least one optical film layer 20, the display panel 200 and the light-emitting panel 10.
The direct display of the light emitting panel 10 is realized by detachably connecting the light emitting panel 10 to at least one optical film layer 20 and the display panel 200 so that the light emitting panel 10 can stand alone.
In some embodiments, the step of forming the light emitting panel 10 of step S110 includes:
providing a first substrate 11;
a plurality of light emitting elements 14 are provided on the first substrate 11;
providing a second substrate 12;
an encapsulating layer 13 is formed on one of the first substrate 11 and the second substrate 12, and the second substrate 12 and the first substrate 11 are bonded together via the encapsulating layer 13 to form the light-emitting panel 10.
In a specific implementation, the light-emitting panel 10 may be formed by forming the encapsulating layer 13 on the first substrate 11 and on the outer peripheral side of the plurality of light-emitting elements 14, and then bonding the second substrate 12 and the first substrate 11 on which the encapsulating layer 13 is formed in an aligned manner. Alternatively, the light-emitting panel 10 may be formed by forming the encapsulating layer 13 on the second substrate 12, and then aligning and connecting the first substrate 11 on which the light-emitting elements 14 are formed and the second substrate 12 on which the encapsulating layer 13 is formed, so that the encapsulating layer 13 can seal the plurality of light-emitting elements 14 inside the encapsulating layer 13. Through setting up encapsulating layer 13 and sealing light emitting component 14 between first base plate 11 and second base plate 12, can effectively improve the bulk strength of luminescent panel 10 to improve the stability of luminescent panel 10, second base plate 12 can effectively support at least one deck optics rete 20 simultaneously, can omit the chase structure, is favorable to reducing the frame and realizes display device 1000's lightweight.
In order to realize the independent display of the light emitting panel 100, in some embodiments, the step S120 of detachably connecting the at least one optical film layer 20 and the display panel 200 to the light emitting panel 10 includes: detachably connecting at least one optical film layer 20 to the light emitting panel 10; and the display panel 200 is detachably attached to the side of the at least one optical film layer 20 facing away from the light-emitting panel 10. With the above arrangement, independence of the light emitting panel 10 for display can be achieved, facilitating real-time display of information.
In some embodiments, the step S120 of detachably connecting the at least one optical film layer 20 and the display panel 200 to the light emitting panel 10 includes: connecting the display panel 200 with at least one optical film layer 20 to form a display structure 300; the light-emitting panel 10 is detachably connected to the display structure 300.
In practical implementation, at least one optical film layer 20 may be fixedly connected to the display panel 200 to form the display structure 300, and the display structure 300 is detachably connected to the light-emitting panel 10, where the detachable connection refers to a connection manner that can separate and combine the display structure 300 and the light-emitting panel 10. For example, the display structure 300 may be snap-connected to the light-emitting panel 10, or bolted to the light-emitting panel, or the display structure 300 and the light-emitting panel 10 may be detachably connected through a telescopic structure or a folding structure, and specifically, the light-emitting panel 10 and the display structure 300 may be misaligned with each other through the telescopic structure, so that the light-emitting panel 10 and the display structure 300 are misaligned with each other in the plane direction of the display device 1000, and the display of the light-emitting panel 10 is prevented from being affected by the display structure 300.
In another aspect, an embodiment of the present invention further provides a method for controlling a display device 1000 according to any one of the above embodiments to perform display, where the display device 1000 includes a first display mode in which display is performed by the display panel 200 and a second display mode in which display is performed by the light-emitting panel 10.
In specific implementation, the display device 1000 may include a control component Host and a timing controller Tcon, the control component Host is electrically connected to the timing controller Tcon, and the timing controller Tcon may be electrically connected to the display panel 200 and the backlight module 100, respectively, the control component Host may control liquid crystal deflection on the display panel 200 and light emission of the backlight module 100 through the timing controller Tcon, thereby implementing display of the display panel 200, that is, the control component Host is matched with the timing controller Tcon to control the display device 1000 to be in the first display mode. In the embodiment of the present invention, in order to realize that the light emitting panel 10 in the backlight module 100 directly displays, the control component Host is further electrically connected to the backlight module 100, that is, the control component Host may be electrically connected to the light emitting panel 10, so that when the light emitting panel 10 is separated from the display panel 200 and at least one optical film layer 20, the control component Host controls the light emitting panel 10 to display, so that the display device 1000 is in the second display mode. Specifically, each light emitting element 14 in the light emitting panel 10 may be regarded as one pixel, and the pixels of the light emitting panel 10 may be controlled by the control component Host to perform display to form different display screens.
In some embodiments, the display device 1000 is an in-vehicle display device, and in the second display mode, the light emitting panel 10 displays one or a combination of vehicle speed, oil amount, time, and characters. Through the arrangement, the display device 1000 can display in real time so that a driver can check the display in real time, and therefore potential safety hazards are effectively reduced. Alternatively, when the user desires the display device 1000 to be in the power saving mode, the light emitting panel 10 may be separated from the display panel 200 and at least one optical film layer 20, thereby straightening the light emitting panel 10.
In some embodiments, a control method of a display device includes: in the first display mode, the display panel 200 and at least one optical film layer 20 are connected to the light emitting panel 10; in the second display mode, the display panel 200 and the at least one optical film layer 20 are separated from the light emitting panel 10. With the above arrangement, the display device 1000 can realize a plurality of display modes, and by separating the display panel 200 and the at least one optical film layer 20 from the light-emitting panel 10, the display panel 200 and the at least one optical film layer 20 are prevented from affecting the display of the light-emitting panel 10, thereby improving the display effect of the light-emitting panel 10.
In some embodiments, the control method of the display apparatus further includes: the display device 1000 is controlled to be in the second display mode based on whether the display panel 200 is in the failure state or whether the display device 1000 is in the power saving state. Through the arrangement, the display device 1000 can be switched under various display modes conveniently, and the universality of the display device 1000 is improved.
Referring to fig. 16, fig. 16 is a flowchart illustrating a method for using a display device according to an embodiment of the invention. An embodiment of the present invention further provides a method for using a display device, which is used for displaying by using the display device 1000 according to any of the embodiments, where the display device 1000 includes a first display mode and a second display mode, and the method for using the display device includes:
s210, in the first display mode, displaying through the display panel 200;
and S220, separating the light-emitting panel 10 from at least one optical film layer 20 and the display panel 200, and displaying through the light-emitting panel 10 to enable the display device 1000 to be in a second display mode.
In an implementation, when a user desires that the display device 1000 is in the power saving mode or the display panel 200 is blank, the user may separate the assembled display device 1000, that is, the light emitting panel 10 from at least one of the optical film layer 20 and the display panel 200, so as to display the light emitting panel 10. When the performance of the display panel 200 is good and a user desires to perform display through the display panel 200, the light emitting panel 10 may be assembled with at least one optical film layer 20 and the display panel 200 so that the display panel 200 performs display. It is understood that an automatic separation and assembly structure, such as an automatic snap structure, may be provided in the display device 1000, so as to facilitate the assembly and separation of the display panel 200 and the light emitting panel 100 by a user.
According to the use method of the display device provided by the embodiment of the invention, the light-emitting panel 10 is separated from the display panel 200 and the at least one optical film layer 20, so that the light-emitting panel 10 can be separated to perform light-emitting display, and the display effect of the light-emitting panel 10 is prevented from being influenced when the at least one optical film layer 20 covers the light-emitting panel 10, thereby improving the display effect of the light-emitting panel 10. Meanwhile, by providing the light emitting panel 10 to directly perform display, it is possible to prevent a potential safety hazard caused by the display panel 200 failing to display when the backlight module 100 is combined with the display panel 200. Further, since the plurality of light emitting elements 14 are packaged between the first substrate 11 and the second substrate 12, the overall strength of the light emitting panel 10 is improved, the protection performance of the light emitting panel 10 on the light emitting elements 14 during displaying is effectively improved, the light emitting elements 14 are prevented from being damaged, and the light emitting panel is convenient to popularize and apply.
In accordance with the above embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (19)
1. A backlight module, comprising:
a light-emitting panel having a light-emitting region and a package region located on an outer peripheral side of the light-emitting region, the light-emitting panel comprising:
a first substrate;
a second substrate disposed opposite to the first substrate;
the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area; and
a plurality of light emitting elements disposed between the first substrate and the second substrate and dispersed in the light emitting region;
and the optical film layer is positioned on the light emitting surface side of the light emitting panel, wherein the optical film layer is detachably connected with the light emitting panel.
2. The backlight module as claimed in claim 1, wherein the light emitting surface is on the second substrate, the backlight module further comprises a plurality of protruding structures on a surface of the second substrate facing the light emitting elements,
the protruding structures are arranged opposite to the light-emitting elements, or orthographic projections of the protruding structures on the second substrate are located between orthographic projections of two adjacent light-emitting elements on the second substrate.
3. The backlight module as claimed in claim 2, wherein the protrusion structure is integrally formed with the second substrate.
4. The backlight module as claimed in claim 2, wherein the angle at which the light emitted from the light emitting elements can be diffused by the plurality of protruding structures is greater than or equal to 10.5 °.
5. A backlight module according to claim 2, wherein the projection structures are disposed opposite to the light-emitting elements, and an equivalent radius R of a cross section of the projection structures in a direction perpendicular to the plane of the light-emitting panel1A distance L between a light emitting surface of the light emitting element and a surface of the second substrate facing the light emitting element1And the distance P between two adjacent convex structures1Satisfies the relation 1:
L1*tan(θ1/2)≤P1＜L1*tan(θ1/2)+R1formula 1
Wherein, theta1Is the maximum light emitting angle of the light emitting element.
6. The backlight module according to claim 2, wherein the orthographic projection of the convex structure on the second substrate is between the orthographic projections of two adjacent light-emitting elements on the second substrate, and the equivalent radius R of the cross section of the convex structure along the direction perpendicular to the plane of the light-emitting panel2A distance L between a light emitting surface of the light emitting element and a surface of the second substrate facing the light emitting element2And the distance P between two adjacent convex structures2Satisfies relation 2:
2L2*tan(θ2/2)≤P2＜2L2*tan(θ2/2)+2R2formula 2
Wherein, theta2Is the maximum light emitting angle of the light emitting element.
7. The backlight module according to any one of claims 1 to 6, wherein the plurality of light emitting elements are arrayed along a first direction to form a plurality of light emitting unit rows, the plurality of light emitting unit rows are arranged along a second direction, the second direction is perpendicular to the first direction, and at least some of the light emitting elements of two adjacent light emitting unit rows are arranged in a staggered manner along the first direction.
8. The backlight module according to any one of claims 1-6, wherein the light-emitting surface is disposed on the second substrate, the second substrate is made of a transparent material,
the transparent material comprises glass.
9. The backlight module according to any one of claims 1 to 6, wherein the at least one optical film layer comprises one or a combination of a scattering layer, a reflecting layer, a color conversion layer and a brightness enhancement film, which are sequentially arranged along a direction away from the light-emitting panel.
10. A display device, comprising:
the display panel comprises a third substrate, a fourth substrate and a display medium layer, wherein the third substrate and the fourth substrate are arranged oppositely, the display medium layer is clamped between the third substrate and the fourth substrate, and a light emergent surface of the display panel is positioned on the third substrate;
a backlight module located on a side of the fourth substrate facing away from the third substrate, the backlight module as claimed in any one of claims 1 to 9.
11. The display device according to claim 10, wherein the at least one optical film layer is attached to the fourth substrate of the display panel, and the display panel is detachably attached to the light emitting panel so that the at least one optical film layer is detachably attached to the light emitting panel.
12. A method of manufacturing a display device, comprising:
forming a light emitting panel, wherein the light emitting panel is provided with a light emitting area and a packaging area positioned on the outer peripheral side of the light emitting area, the light emitting panel comprises a first substrate, a second substrate, a packaging layer and a plurality of light emitting elements, the first substrate and the second substrate are oppositely arranged, the packaging layer is positioned between the first substrate and the second substrate and positioned in the packaging area, and the plurality of light emitting elements are positioned between the first substrate and the second substrate and distributed in the light emitting area;
at least one optical film layer, the display panel and the light-emitting panel are detachably connected.
13. The method according to claim 12, wherein the step of forming the light-emitting panel comprises:
providing the first substrate;
disposing the plurality of light emitting elements on the first substrate;
providing the second substrate;
and forming an encapsulation layer on one of the first substrate and the second substrate, and bonding the second substrate and the first substrate through the encapsulation layer to form the light-emitting panel.
14. The method of claim 12, wherein removably attaching at least one optical film layer and a display panel to the light-emitting panel comprises:
detachably connecting at least one optical film layer with the light-emitting panel;
and detachably connecting the display panel to the side, away from the light-emitting panel, of the at least one optical film layer.
15. The method of claim 12, wherein removably attaching at least one optical film layer and a display panel to the light-emitting panel comprises:
connecting the display panel and the at least one optical film layer to form a display structure;
and detachably connecting the light-emitting panel with the display structure.
16. A control method of a display device for controlling the display device according to claim 10 or 11 to perform display, the display device including a first display mode in which display is performed by the display panel and a second display mode in which display is performed by the light-emitting panel.
17. The control method of a display device according to claim 16,
in the first display mode, the display panel and the at least one optical film layer are connected with the light-emitting panel;
in the second display mode, the display panel and the at least one optical film layer are separated from the light emitting panel.
18. The control method of a display device according to claim 16, characterized by further comprising:
and controlling the display device to be in the second display mode based on the fact that the display panel is in a fault state or the fact that the display device is in a power consumption saving state.
19. A method for using a display device according to claim 10 or 11 for displaying, the display device including a first display mode and a second display mode, the method comprising:
in the first display mode, displaying through the display panel;
and separating the light-emitting panel from the at least one optical film layer and the display panel, and displaying through the light-emitting panel so that the display device is in the second display mode.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029997A (en) * | 2006-03-01 | 2007-09-05 | 中华映管股份有限公司 | Back-light module and liquid-crystal display device |
| CN101118348A (en) * | 2007-09-14 | 2008-02-06 | 友达光电股份有限公司 | Backlight module and diffuse transmission module thereof |
| CN101118832A (en) * | 2006-08-03 | 2008-02-06 | 三星Sdi株式会社 | Light emission device and display device |
| CN101118341A (en) * | 2006-08-01 | 2008-02-06 | 中强光电股份有限公司 | Backlight module |
| CN102184681A (en) * | 2011-04-12 | 2011-09-14 | 明基电通有限公司 | Display device |
| CN104360539A (en) * | 2014-11-21 | 2015-02-18 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| CN105607346A (en) * | 2016-03-28 | 2016-05-25 | 深圳市华星光电技术有限公司 | Graphene backlight module and liquid crystal display device |
-
2020
- 2020-07-28 CN CN202010737024.0A patent/CN111650784B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029997A (en) * | 2006-03-01 | 2007-09-05 | 中华映管股份有限公司 | Back-light module and liquid-crystal display device |
| CN101118341A (en) * | 2006-08-01 | 2008-02-06 | 中强光电股份有限公司 | Backlight module |
| CN101118832A (en) * | 2006-08-03 | 2008-02-06 | 三星Sdi株式会社 | Light emission device and display device |
| CN101118348A (en) * | 2007-09-14 | 2008-02-06 | 友达光电股份有限公司 | Backlight module and diffuse transmission module thereof |
| CN102184681A (en) * | 2011-04-12 | 2011-09-14 | 明基电通有限公司 | Display device |
| CN104360539A (en) * | 2014-11-21 | 2015-02-18 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
| CN105607346A (en) * | 2016-03-28 | 2016-05-25 | 深圳市华星光电技术有限公司 | Graphene backlight module and liquid crystal display device |
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