CN116576422A - Light guide plate, backlight module and display device - Google Patents
Light guide plate, backlight module and display device Download PDFInfo
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- CN116576422A CN116576422A CN202310638635.3A CN202310638635A CN116576422A CN 116576422 A CN116576422 A CN 116576422A CN 202310638635 A CN202310638635 A CN 202310638635A CN 116576422 A CN116576422 A CN 116576422A
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- guide plate
- light guide
- prism
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- 239000011324 bead Substances 0.000 claims description 29
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 27
- 230000008859 change Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
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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
-
- 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
-
- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a light guide plate, a backlight source module and a display device, wherein the light incident surface side of the light guide plate comprises a first dimming microstructure, at least part of light in the incident light is adjusted to be connected into the light guide plate and intersected with a light emergent surface and/or a backlight surface through the first dimming microstructure, wherein the light emergent efficiency of the light guide plate can be directly improved by adjusting the intersection of the incident light and the light emergent surface; and adjusting the intersection of the incident light and the backlight surface can enable the incident light to be transmitted to the light emergent surface to be emergent after being reflected by the backlight surface side, so as to further improve the light emergent efficiency of the light guide plate. Therefore, the technical scheme provided by the invention not only reduces the loss of the light guide plate to the incident light, but also improves the utilization rate of the light guide plate to the incident light and improves the luminous efficiency of the light guide plate.
Description
Technical Field
The invention relates to the technical field of display, in particular to a light guide plate, a backlight source module and a display device.
Background
The display device mainly comprises a backlight source module and a display panel, wherein the backlight source module is one of key components of the display device and is used for supplying light with sufficient brightness and uniform distribution for the display panel so that the display panel can normally display images. The backlight source module mainly comprises components such as a light emitting element, a light guide plate, a reflecting sheet, a frame and the like, and is divided into a side-in type backlight source module and a direct type backlight source module according to the setting positions of the light emitting elements, and the side-in type backlight source module is widely applied due to the advantages of small number of required light emitting elements, low cost and thin thickness. The light-emitting element of the side-in type backlight source module is arranged on one side of the light guide plate, and after the light emitted by the light-emitting element is incident into the light guide plate, the light is diffused in the light guide plate so that the light guide plate uniformly emits light. However, the existing light guide plate has serious loss to the incident light, which reduces the luminous efficiency of the light guide plate and needs improvement.
Disclosure of Invention
In view of this, the invention provides a light guide plate, a backlight module and a display device, which effectively solve the technical problems existing in the prior art, reduce the loss of the light guide plate to the incident light, improve the utilization rate of the light guide plate to the incident light, and improve the luminous efficiency of the light guide plate.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the light guide plate comprises a light emitting surface, a backlight surface and a light incident surface, wherein the light emitting surface and the backlight surface are oppositely arranged in a first direction, the light incident surface is positioned between the light emitting surface and the backlight surface, the light incident surface extends along a second direction, the first direction is perpendicular to the surface where the light guide plate is positioned, and the second direction is parallel to the surface where the light guide plate is positioned;
at the light incident surface, the light guide plate comprises a first dimming microstructure, wherein the first dimming microstructure is used for adjusting at least part of incident light to enter the light guide plate and intersect with the light emergent surface and/or the backlight surface.
Correspondingly, the invention also provides a backlight source module, which comprises the light guide plate;
and a reflecting sheet arranged on one side of the backlight surface of the light guide plate.
Correspondingly, the invention also provides a display device, which comprises the backlight source module.
Compared with the prior art, the technical scheme provided by the invention has at least the following advantages:
the invention provides a light guide plate, a backlight source module and a display device, wherein the light guide plate comprises a light emitting surface, a backlight surface and a light entering surface, wherein the light emitting surface and the backlight surface are oppositely arranged in a first direction, the light entering surface is positioned between the light emitting surface and the backlight surface, the light entering surface extends along a second direction, the first direction is perpendicular to the surface where the light guide plate is positioned, and the second direction is parallel to the surface where the light guide plate is positioned; at the light incident surface, the light guide plate comprises a first dimming microstructure, wherein the first dimming microstructure is used for adjusting at least part of incident light to enter the light guide plate and intersect with the light emergent surface and/or the backlight surface.
The light incident surface side of the light guide plate comprises a first dimming microstructure, and at least part of the incident light is adjusted to be connected into the light guide plate and intersected with the light emergent surface and/or the backlight surface through the first dimming microstructure, wherein the light emergent efficiency of the light guide plate can be directly improved by adjusting the intersection of the incident light and the light emergent surface; and adjusting the intersection of the incident light and the backlight surface can enable the incident light to be transmitted to the light emergent surface to be emergent after being reflected by the backlight surface side, so as to further improve the light emergent efficiency of the light guide plate. Therefore, the technical scheme provided by the invention not only reduces the loss of the light guide plate to the incident light, but also improves the utilization rate of the light guide plate to the incident light and improves the luminous efficiency of the light guide plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a light guide plate according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
fig. 11 is a schematic structural view of another light guide plate according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention;
FIG. 13 is a cut-away view taken along the direction BB' in FIG. 12;
FIG. 14 is a cut-away view taken along the direction CC' of FIG. 12;
fig. 15 is a schematic structural view of another light guide plate according to an embodiment of the present invention;
fig. 16 is a schematic structural view of another light guide plate according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As described in the background art, the backlight module mainly includes components such as a light emitting element, a light guide plate, a reflective sheet, and a frame, and is divided into a side-entry type backlight module and a direct-type backlight module according to the setting position of the light emitting element, and the side-entry type backlight module is widely used due to the advantages of small number of light emitting elements, low cost, and thin thickness. The light-emitting element of the side-in type backlight source module is arranged on one side of the light guide plate, and after the light emitted by the light-emitting element is incident into the light guide plate, the light is diffused in the light guide plate so that the light guide plate uniformly emits light. However, the existing light guide plate has serious loss to the incident light, which reduces the luminous efficiency of the light guide plate and needs improvement.
Based on the above, the embodiment of the invention provides a light guide plate, a backlight source module and a display device, which effectively solve the technical problems existing in the prior art, reduce the loss of the light guide plate to the incident light, improve the utilization rate of the light guide plate to the incident light, and improve the luminous efficiency of the light guide plate.
In order to achieve the above objective, the technical solutions provided by the embodiments of the present invention are described in detail below, with reference to fig. 1 to 18.
Referring to fig. 1, a schematic structural diagram of a light guide plate according to an embodiment of the present invention is provided, where the light guide plate 100 according to an embodiment of the present invention includes a light exit surface A1 and a backlight surface A2 that are disposed opposite to each other in a first direction X, and a light entrance surface A3 that is located between the light exit surface A1 and the backlight surface AS, the light entrance surface A3 extends along a second direction Z, the first direction Y is perpendicular to a surface of the light guide plate 100, and the second direction Z is parallel to the surface of the light guide plate 100.
At the light incident surface A3, the light guide plate 100 includes a first dimming microstructure 110, where the first dimming microstructure 110 is configured to adjust at least a portion of incident light (such as the incident light represented by a dashed arrow on the light incident surface A3 side in fig. 1) to enter the light guide plate 100 and intersect the light emergent surface A1 and/or the backlight surface A2.
It can be understood that the light guide plate 100 provided in the embodiment of the invention is a side-in light guide plate, the light emitting surface A1 and the backlight surface A2 are disposed opposite to each other, and the light incident surface A3 is disposed between the light emitting surface A1 and the backlight surface A2. In the first direction Y, one side of the light emitting surface A3 contacts the light entering surface A1 to form an included angle, and the other side of the light entering surface A3 contacts the backlight surface A2 to form an included angle. When the light guide plate 100 is applied to a display device, a light bead is disposed on the light incident surface A3 side of the light guide plate 100, and light emitted from the light bead is used as incident light of the light guide plate 100. When the first dimming microstructure 110 is not arranged on the light incident surface A3 side of the light guide plate 100, part of the incident light is connected into the light guide plate 100 and can intersect with the light emergent surface A1 and/or the backlight surface A2, the light intersected with the light emergent surface A1 directly exits from the light guide plate 100, and the light intersected with the backlight surface A2 is reflected to the light emergent surface A1 by the reflecting sheet and then exits; and the other part of the incident light does not intersect any one of the light emergent surface A1 and the backlight surface A2, and the light is directly emitted from the opposite side or the adjacent side of the light emergent surface A3 to cause the waste of the light.
Therefore, the first dimming microstructure 110 is disposed on the light incident surface A3 side of the light guide plate 100, and at least a portion of the incident light is adjusted to be connected into the light guide plate 100 and intersected with the light emergent surface A1 and/or the backlight surface A2 by the first dimming microstructure 110, wherein the light emergent efficiency of the light guide plate 100 can be directly improved by adjusting the intersection of the incident light and the light emergent surface A1; and adjusting the intersection of the incident light and the backlight surface A2 can enable the incident light to be transmitted to the light emergent surface A1 to be emergent after being reflected by the backlight surface A2 side, so as to further improve the light emergent efficiency of the light guide plate. Therefore, the technical scheme provided by the embodiment of the invention not only reduces the loss of the light guide plate 100 to the incident light, but also improves the utilization rate of the light guide plate 100 to the incident light and improves the luminous efficiency of the light guide plate 100. Meanwhile, the light emitting efficiency of the light guide plate 100 is improved without adding more lamp beads, so that the power consumption of the display device is reduced, and the cost of the display device is reduced.
It should be noted that, when the first dimming microstructure is not provided in the light guide plate, the incident light adjusted by the first dimming microstructure provided in the embodiment of the present invention includes the light directly emitted from the opposite side or the adjacent side of the light incident surface after entering the light guide plate, and the light emitted from the opposite side or the adjacent side of the light incident surface after being reflected by the back light surface. Because parameters such as included angles among the light incident surface, the light emergent surface, the backlight surface and the like of the light guide plate all affect whether incident light can directly or indirectly exit from the opposite side surface or the adjacent side surface of the light incident surface after entering the light guide plate, the embodiment of the invention does not specifically limit the parameters such as the included angles between the part of incident light and the light incident surface of the light guide plate and needs to be specifically analyzed and designed according to practical application.
The embodiment of the invention does not limit the included angle between the light incident surface and the light emergent surface and between the light incident surface and the backlight surface. In an embodiment of the present invention, the light incident surface provided by the embodiment of the present invention may be disposed perpendicular to the light emergent surface, and the light incident surface and the backlight surface are disposed perpendicular to each other. As shown in fig. 2, a schematic structure diagram of another light guide plate according to an embodiment of the invention is shown, wherein the light incident surface A3 of the light guide plate 100 is disposed perpendicular to the light emergent surface A1, and the light incident surface A3 is disposed perpendicular to the backlight surface A2.
Alternatively, the light incident surface provided by the embodiment of the invention can be obliquely arranged with the light emergent surface and the backlight surface, and the included angle between the light incident surface and the light emergent surface and the included angle between the light incident surface and the backlight surface are complementary angles. As shown in fig. 3, a schematic structural diagram of a light guide plate according to another embodiment of the present invention is provided, wherein a light incident surface A3 and a light emergent surface A1 of the light guide plate 100 are arranged obliquely, and a light incident surface A3 and a backlight surface A2 are arranged obliquely, and an included angle between the light incident surface A3 and the light emergent surface A1 and an included angle between the light incident surface A3 and the backlight surface A2 are complementary angles.
It should be noted that, the relationship between the angles of the light incident surface A3 and the light emergent surface A1 and the backlight surface A2 shown in fig. 2 and fig. 3 is only two types within the application scope of the present invention, and in other embodiments of the present invention, the angles of the light incident surface A3 and the light emergent surface A1 and the backlight surface A2 may be set in other manners, for example, the light incident surface A3 is perpendicular to the light emergent surface A1 and the light incident surface A3 is perpendicular to the backlight surface A2, which is not limited in particular, and a specific design is needed according to practical applications.
The first dimming microstructure provided by the embodiment of the invention is used for adjusting part of incident light to enter the light guide plate to intersect with the light emitting surface and/or the backlight surface, so that the first dimming microstructure can be a prism microstructure. The dimming microstructure provided by the embodiment of the present invention will be described in more detail with reference to fig. 4, which is a schematic structural diagram of another light guide plate provided by the embodiment of the present invention, where the first dimming microstructure provided by the embodiment of the present invention includes a plurality of first prism microstructures 111, where the first prism microstructures 111 extend along the second direction Z, and the plurality of first prism microstructures 111 are arranged along the first direction X.
It can be appreciated that the first prism microstructure 111 provided in the embodiment of the present invention can play a role in adjusting the propagation angle of the incident light. In this regard, in the embodiment of the present invention, the first prism microstructures 111 are disposed to extend along the second direction Z, and the plurality of first prism microstructures 111 are arranged along the first direction Y, so that when the incident light irradiates onto the first prism microstructures 111, the prism surface of the first prism microstructures 111 can change the direction of the incident light to propagate along the first direction Y, that is, the first prism microstructures 111 can adjust the incident light to be incident into the light guide plate 100 and then intersect with the light exit surface A1 or the light entrance surface A2, thereby finally achieving the purposes of improving the light utilization rate and improving the light emitting efficiency of the light guide plate 100.
As shown in fig. 5, a schematic structural diagram of another light guide plate provided by an embodiment of the present invention is shown, where the first prism microstructure provided by the embodiment of the present invention may be a first prism 111a; the vertex angle b1 of the first prism 111a ranges from 60 degrees to 150 degrees; and, the width L1 of the bottom surface of the first prism 111a in the first direction Y ranges from 40 to 100 micrometers. It can be understood that the angle of the incident light entering the light guide plate 100 after passing through the first prism 111a has an intimate relationship with the dimension parameter of the first prism 111a, so that the embodiment of the invention can adjust the incident light to the greatest extent by optimizing the range of the top angle b1 and the width L1 of the bottom surface of the first prism 111a, reduce the light emitted from the opposite side and the adjacent side of the light incident surface A3 of the light guide plate 100, increase the light emitted directly from the light emergent surface A1 and the light emitted from the backlight surface A2 after being reflected to the light emergent surface A1, and improve the light utilization rate of the light guide plate 100 and the light emitting efficiency of the light guide plate 100.
As further shown in fig. 5, in the embodiment of the present invention, the vertex angles b1 of all the first prisms 111a are the same, and/or the widths L1 of the bottom surfaces of all the first prisms 111a in the first direction are the same, and by setting the vertex angles b1 of the first prisms 111a to be the same, and setting the widths L1 of the bottom surfaces of the first prisms 111a to be the same, the difficulty in manufacturing the light guide plate 100 can be reduced while ensuring that the first prisms 111a can effectively adjust the propagation direction of the incident light.
Alternatively, the widths of the top angle and the bottom surface of the first prism provided by the embodiment of the present invention may also be set to be a special rule. Referring to fig. 6, a schematic structural diagram of a light guide plate according to an embodiment of the present invention is shown, wherein the light incident surface A3 includes a plurality of bead corresponding regions S disposed along the second direction, and the apex angle b1 of the first prism 111a is in a decreasing trend along the first direction Y from two sides of the light incident surface A3 toward the bead corresponding regions S (e.g., the direction Y1 and the direction Y2 in fig. 6), and/or the widths L1 of the bottom surfaces of all the first prisms 111a in the first direction Y are the same.
It can be understood that, with the light beads corresponding to the light guide plate 100 as the center, the angles of the incident light received by the first prisms 111a corresponding to the light bead corresponding region S are different from the angles of the incident light received by the first prisms 111a on both sides, the angle of the incident light received by the first prisms 111a corresponding to the light bead corresponding region S is smaller, and the angle of the incident light received by the first prisms 111a on both sides of the light bead corresponding region S is larger; in the embodiment of the invention, the vertex angle b1 of the first prism 111a corresponding to the lamp bead corresponding area S is set smaller, and the vertex angles b1 of the first prisms 111a at two sides of the lamp bead corresponding area S are set larger, so that more incident light can be adjusted, the light emitted from the opposite side and the adjacent side of the light incident surface A3 of the light guide plate 100 can be reduced to the greatest extent, the light emitted from the light emergent surface A1 and the light emitted from the backlight surface A2 after being reflected to the light emergent surface A1 are increased, the light utilization rate of the light guide plate 100 is improved, and the luminous efficiency of the light guide plate 100 is improved.
In an embodiment of the present invention, the light guide plate provided in the embodiment of the present invention is a side-entry light guide plate, and a plurality of light bead corresponding regions sequentially arranged along a second direction are disposed on a light entry surface of the light guide plate, where a second dimming microstructure may be disposed at a gap between adjacent light bead corresponding regions. Fig. 7 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention, where the light incident surface A3 provided by the embodiment of the present invention includes a plurality of light bead corresponding regions S disposed along the second direction Z; at least a portion of the light guiding gap adjacent to the bead corresponding region S, the light guiding plate 100 includes a second light adjusting microstructure 120, where the second light adjusting microstructure 120 is used to adjust at least a portion of the incident light to be guided into the light guiding plate 100 after being diffused at the light guiding gap.
It can be understood that the second dimming microstructure 120 is disposed at the light guiding gap between the adjacent light bead corresponding regions S, and the second dimming microstructure 120 can diffuse the incident light at the gap between the adjacent light bead corresponding regions S, and then guide the diffused light into the light guiding plate 100, thereby improving the brightness of the light guiding gap, avoiding the condition of alternately brightness and darkness at the light bead corresponding regions S and the light guiding gap, and improving the light emitting uniformity of the light guiding plate 100.
Optionally, the second light modulation microstructure provided by the embodiment of the present invention includes at least one of a roughened surface and a plurality of second prism microstructures. As shown in fig. 8, in a schematic structural diagram of another light guide plate provided by the embodiment of the present invention, the second light modulation microstructure 120 provided by the embodiment of the present invention may be a roughened surface, and when an incident light beam irradiates the roughened surface of the second light modulation microstructure 120, the incident light beam can be diffused through the roughened surface, so as to improve the brightness at the light guide gap.
Or as shown in fig. 9, the second light modulation microstructure provided by the embodiment of the present invention may include a plurality of second prism microstructures 112, where the second prism microstructures 112 extend along the first direction Y, and the plurality of second prism microstructures 112 are arranged along the second direction Z.
It can be appreciated that the second prism microstructure 112 provided in the embodiment of the present invention can perform a function of adjusting the propagation angle of the incident light. In this regard, in the embodiment of the present invention, the second prism microstructures 112 are configured to extend along the first direction Y, and the plurality of second prism microstructures 112 are arranged along the second direction Z, so that when the incident light irradiates the second prism microstructures 112, the prism faces of the second prism microstructures 112 can change the direction of the incident light to propagate along the second direction Z, that is, the second prism microstructures 112 can diffuse the incident light along the second direction Z, and finally achieve the purpose of improving the brightness at the light guiding gap.
Fig. 10 is a schematic structural diagram of another light guide plate according to an embodiment of the present invention, where the second prism microstructure provided by the embodiment of the present invention is a second prism 112a; the vertex angle b2 of the second triangular prism 112a ranges from 60 degrees to 150 degrees; and, the width L2 of the bottom surface of the second prism 112a in the second direction Z ranges from 40 to 100 micrometers. According to the embodiment of the invention, the incident light can be diffused to the greatest extent by optimizing the range of the top angle b2 and the width L2 of the bottom surface of the second triangular prism 112a, and the brightness of the light guide gap can be improved.
As further shown in fig. 10, in the embodiment of the present invention, the vertex angles b2 of all the second prisms 112a are the same, and/or the widths L2 of the bottom surfaces of all the second prisms 112a in the second direction Z are the same, and by setting the vertex angles b2 of the second prisms 112a to be the same, and setting the widths L2 of the bottom surfaces of the second prisms 112a to be the same, the manufacturing difficulty of the light guide plate 100 can be reduced while ensuring that the second prisms 112a can effectively adjust the diffusion of the incident light at the light guide gap.
Alternatively, the widths of the top angle and the bottom surface of the second prism provided in the embodiment of the present invention may also be set to be a special rule. Referring to fig. 11, a schematic structural diagram of another light guide plate according to an embodiment of the present invention is shown, in which, from the center of the light guide gap toward the directions of the bead corresponding regions S on both sides (such as the direction Z1 and the direction Z2 shown in fig. 11), the vertex angle b2 of the second prism 112a is in a decreasing trend, and/or the widths L2 of the bottom surfaces of all the second prisms 112a in the second direction Z are the same.
It can be understood that, with the lamp bead corresponding to the light guide plate 100 as the center, the angle of the incident light received by the second prism 112a near the lamp bead corresponding region S is different from the angle of the incident light received by the second prism 112a near the central region of the light guide gap, the angle of the incident light received by the second prism 112a near the lamp bead corresponding region S is smaller, and the angle of the incident light received by the second prism 112a near the central region of the light guide gap is larger; in the embodiment of the invention, the vertex angle b2 of the second prism 112a close to the lamp bead corresponding area S is set smaller, and the vertex angle b2 of the second prism 112a in the central area of the light guide gap is set larger, so that different incident light rays can be diffused in the light guide gap to a greater extent, and the brightness in the light guide gap is improved.
Furthermore, the embodiment of the invention can set the opposite side surface and the adjacent side surface of the light incident surface as the reflecting surface, so that light leakage of the opposite side surface and the adjacent side surface can be reduced. Referring to fig. 12, 13 and 14, fig. 12 is a schematic structural diagram of a light guide plate according to another embodiment of the present invention, fig. 13 is a sectional view along BB 'in fig. 12, and fig. 14 is a sectional view along CC' in fig. 12, where the light guide plate 100 includes a light leakage surface A4 located between the light exit surface A1 and the backlight surface A2, two ends of the light leakage surface A4 are correspondingly connected to two ends of the light entrance surface A3, and the light leakage surface A4 is a reflective surface facing the inside of the light guide plate 100. That is, the light leakage surface A4 of the light guide plate 100 includes a side surface opposite to the light incident surface A3 (the light leakage surface A4 on the side shown in fig. 13) and an adjacent side surface (the light leakage surface A4 on the side shown in fig. 14), the light leakage surface A4 is set as a reflective surface, and when the light of the light guide plate 100 propagates to the light leakage surface A4, the light leakage surface A4 reflects the light into the light guide plate 100 again, so as to increase the light output of the light output surface A1 of the light guide plate 100 and improve the light output efficiency of the light guide plate 100.
Furthermore, a third dimming microstructure can be further arranged at the light leakage surface provided by the embodiment of the invention, so that light rays can be transmitted to the light outlet surface of the light guide plate to a greater extent. As shown in fig. 15, a schematic structural diagram of a light guide plate according to another embodiment of the present invention is provided, where, at the light leakage surface A4, the light guide plate 100 includes a third light modulation microstructure 130, and the third light modulation microstructure 130 is configured to reflect at least part of the light in the light guide plate 100 to intersect with the light exit surface A1 and/or the backlight surface A2.
It can be understood that the light leakage surface A4 is configured as a reflecting surface, and when the light of the light guide plate 100 propagates to the light leakage surface A4, the light leakage surface A4 reflects the light into the light guide plate 100 again. In addition, since the third dimming microstructure 130 is disposed at the light leakage surface A4, the third dimming microstructure 130 can adjust the intersection of the light ray and the light exit surface A1 to directly improve the light exit efficiency of the light guide plate 100; and adjusting the intersection of the light ray and the backlight surface A2 to make the light ray propagate to the light emitting surface A1 to be emitted after being reflected by the backlight surface A2 side, so as to further improve the light emitting efficiency of the light guide plate 100. Therefore, the technical scheme provided by the embodiment of the invention not only reduces the loss of the light guide plate 100 to the incident light, but also improves the utilization rate of the light guide plate 100 to the incident light and improves the luminous efficiency of the light guide plate 100. Meanwhile, the light emitting efficiency of the light guide plate 100 is improved without adding more lamp beads, so that the power consumption of the display device is reduced, and the cost of the display device is reduced.
As shown in fig. 16, which is a schematic structural view of a light guide plate according to another embodiment of the present invention, the third light modulation microstructure 130 provided by the present invention includes at least one of a plurality of third prism microstructures and a plurality of convex lens microstructures, wherein the third prism microstructures and the convex lens microstructures extend along a third direction X, and the plurality of third prism microstructures and the plurality of convex lens microstructures are arranged along the first direction Y; the third direction X is an extending direction between two ends of the connection between the light leakage surface A4 and the light incident surface A3 on the light leakage surface A4. Therefore, when the light propagates and irradiates the third dimming microstructure 130, the reflection of the light leakage surface A4 and the cooperation of the third dimming microstructure 130 can adjust the intersection of the light and the light emergent surface A1 to directly improve the light emergent efficiency of the light guide plate 100; and adjusting the intersection of the light ray and the backlight surface A2 to make the light ray propagate to the light emitting surface A1 to be emitted after being reflected by the backlight surface A2 side, so as to further improve the light emitting efficiency of the light guide plate 100.
It should be noted that, the dimming microstructure provided in the embodiment of the present invention is not limited to the prism and the like, and other microstructures may be used in other embodiments of the present invention, which is not particularly limited.
In any of the above embodiments of the present invention, the prism microstructures provided by the present invention have a continuous structure or a discontinuous structure in the extending direction, that is, any one of the first prism microstructure, the second prism microstructure and the third prism microstructure may be continuous or discontinuous in the extending direction, so as to improve the applicable structure type of the prism microstructures on the light guide plate, which is not particularly limited.
And, the dimming microstructure and the rest of the light guide plate provided by the embodiment of the invention can be an integrated structure, so that the embodiment of the invention is not particularly limited.
Correspondingly, the embodiment of the invention also provides a backlight source module. As shown in fig. 17, a schematic structural diagram of a backlight module according to an embodiment of the present invention is provided, wherein the backlight module 200 includes the light guide plate 210 provided in any one of the above embodiments; and a reflecting sheet 220 disposed on a backlight surface side of the light guide plate 210.
Correspondingly, the embodiment of the invention also provides a display device, which comprises the backlight source module provided by any embodiment.
Referring to fig. 18, a schematic structural diagram of a display device according to an embodiment of the present invention is shown, where the display device 1000 provided by the embodiment of the present invention may be a mobile terminal, and the display device 1000 includes the backlight module provided by any one of the embodiments.
It should be noted that, the display device provided in the embodiment of the present invention may also be a notebook, a tablet computer, a wearable device, etc., which is not particularly limited.
The embodiment of the invention provides a light guide plate, a backlight source module and a display device, wherein the light guide plate comprises a light emitting surface, a backlight surface and a light entering surface, wherein the light emitting surface and the backlight surface are oppositely arranged in a first direction, the light entering surface is positioned between the light emitting surface and the backlight surface, the light entering surface extends along a second direction, the first direction is perpendicular to the surface where the light guide plate is positioned, and the second direction is parallel to the surface where the light guide plate is positioned; at the light incident surface, the light guide plate comprises a first dimming microstructure, wherein the first dimming microstructure is used for adjusting at least part of incident light to enter the light guide plate and intersect with the light emergent surface and/or the backlight surface.
The light incident surface side of the light guide plate comprises a first dimming microstructure, and at least part of the incident light is adjusted to be connected into the light guide plate and intersected with the light emergent surface and/or the backlight surface through the first dimming microstructure, wherein the light emergent efficiency of the light guide plate can be directly improved by adjusting the intersection of the incident light and the light emergent surface; and adjusting the intersection of the incident light and the backlight surface can enable the incident light to be transmitted to the light emergent surface to be emergent after being reflected by the backlight surface side, so as to further improve the light emergent efficiency of the light guide plate. Therefore, the technical scheme provided by the embodiment of the invention not only reduces the loss of the light guide plate to the incident light, but also improves the utilization rate of the light guide plate to the incident light and improves the luminous efficiency of the light guide plate.
In the description of the present invention, it should be understood that the directions or positional relationships as indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are based on the directions or positional relationships shown in the drawings are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (14)
1. The light guide plate is characterized by comprising a light emitting surface, a backlight surface and a light incident surface, wherein the light emitting surface and the backlight surface are oppositely arranged in a first direction, the light incident surface is positioned between the light emitting surface and the backlight surface, the light incident surface extends along a second direction, the first direction is perpendicular to the surface where the light guide plate is positioned, and the second direction is parallel to the surface where the light guide plate is positioned;
at the light incident surface, the light guide plate comprises a first dimming microstructure, wherein the first dimming microstructure is used for adjusting at least part of incident light to enter the light guide plate and intersect with the light emergent surface and/or the backlight surface.
2. The light guide plate of claim 1, wherein the first dimming microstructure comprises a plurality of first prismatic microstructures, wherein the first prismatic microstructures extend along the second direction and the plurality of first prismatic microstructures are aligned along the first direction.
3. The light guide plate of claim 2, wherein the first prism microstructure is a first prism;
the vertex angle range of the first triangular prism is 60-150 degrees;
and the width of the bottom surface of the first triangular prism in the first direction ranges from 40 micrometers to 100 micrometers.
4. A light guide plate according to claim 3, wherein the apex angles of all the first triangular prisms are the same, and/or the widths of the bottom surfaces of all the first triangular prisms in the first direction are the same;
or, the light incident surface includes a plurality of lamp bead corresponding areas arranged along the second direction, along the first direction, from two sides of the light incident surface towards the direction of the lamp bead corresponding areas, the vertex angle of the first prism is in a decreasing trend, and/or the widths of the bottom surfaces of all the first prisms in the first direction are the same.
5. The light guide plate of claim 1, wherein the light entrance surface comprises a plurality of light bead corresponding regions disposed along the second direction;
at least part of the light guide gap adjacent to the lamp bead corresponding area, the light guide plate comprises a second light modulation microstructure, wherein the second light modulation microstructure is used for adjusting at least part of light in the incident light to be guided into the light guide plate after being diffused at the light guide gap.
6. The light guide plate of claim 5, wherein the second light modulation microstructure comprises at least one of a roughened surface and a plurality of second prism microstructures, wherein the second prism microstructures extend along the first direction and the plurality of second prism microstructures are aligned along the second direction.
7. The light guide plate of claim 6, wherein the second prism microstructure is a second prism;
the vertex angle range of the second triangular prism is 60-150 degrees;
and the width of the bottom surface of the second triangular prism in the second direction ranges from 40 micrometers to 100 micrometers.
8. The light guide plate according to claim 7, wherein the apex angles of all the second triangular prisms are the same, and/or the widths of the bottom surfaces of all the second triangular prisms in the second direction are the same;
or, from the center of the light guide gap to the directions of the lamp bead corresponding areas at the two sides, the vertex angles of the second triangular prisms are in a decreasing trend, and/or the widths of the bottom surfaces of all the second triangular prisms in the second direction are the same.
9. The light guide plate of claim 1, wherein the light guide plate comprises a light leakage surface between the light exit surface and the backlight surface, two ends of the light leakage surface are correspondingly connected with two ends of the light entrance surface, and the light leakage surface is a reflecting surface.
10. The light guide plate of claim 9, wherein at the light leakage surface, the light guide plate comprises a third dimming microstructure, wherein the third dimming microstructure is configured to reflect at least part of light rays in the light guide plate to intersect the light exit surface and/or the backlight surface.
11. The light guide plate of claim 10, wherein the third dimming microstructure comprises at least one of a plurality of third prism microstructures and a plurality of convex lens microstructures, wherein the third prism microstructures and the convex lens microstructures extend along a third direction, and the plurality of third prism microstructures and the plurality of convex lens microstructures are aligned along the first direction; the third direction is the extending direction between the two ends of the connection of the light leakage surface and the light incident surface on the light leakage surface.
12. A light guide plate according to claim 2, 6 or 11, wherein the prismatic microstructure is continuous or discontinuous in its direction of extension.
13. A backlight module, characterized in that the backlight module comprises the light guide plate according to any one of claims 1-12;
and a reflecting sheet arranged on one side of the backlight surface of the light guide plate.
14. A display device comprising the backlight module of claim 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310638635.3A CN116576422A (en) | 2023-05-31 | 2023-05-31 | Light guide plate, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310638635.3A CN116576422A (en) | 2023-05-31 | 2023-05-31 | Light guide plate, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116576422A true CN116576422A (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310638635.3A Pending CN116576422A (en) | 2023-05-31 | 2023-05-31 | Light guide plate, backlight module and display device |
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| Country | Link |
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| CN (1) | CN116576422A (en) |
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2023
- 2023-05-31 CN CN202310638635.3A patent/CN116576422A/en active Pending
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