CN111679359A - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
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- CN111679359A CN111679359A CN202010572053.6A CN202010572053A CN111679359A CN 111679359 A CN111679359 A CN 111679359A CN 202010572053 A CN202010572053 A CN 202010572053A CN 111679359 A CN111679359 A CN 111679359A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/263—Drying gases or vapours by absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
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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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
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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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
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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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the application provides a light guide plate and backlight unit, and the light guide plate includes the light conversion layer and is located the dry layer on light conversion layer surface in this application, and the dry layer includes evenly distributed's moisture absorption particle. The moisture absorption particle comprises a framework particle, an auxiliary particle filled between the framework particles and a gap particle between the framework particle and the auxiliary particle, the framework particle and the auxiliary particle are used for absorbing moisture, the gap particle is used for exchanging or transferring moisture, it can be ensured that all parts of the light guide plate absorb water vapor uniformly, and the inside of the backlight module is ensured to be dry, in addition, the materials of the framework particle, the auxiliary particle and the gap particle are preferably transparent silicon dioxide crystal particles, the effect of the light guide plate is not influenced, thereby ensuring that all parts of the light guide plate have the same shrinkage and expansion capacity, the light guide plate is not easy to generate corrugate, the abnormal phenomenon of light emission is avoided, and the light emission.
Description
Technical Field
The application relates to the technical field of display, especially, relate to a light guide plate and backlight unit.
Background
The liquid crystal display panel is provided with a thin film transistor substrate, a color film substrate and liquid crystal injected between the thin film transistor substrate and the color film substrate. Since the liquid crystal display panel is a non-self-luminous device, a backlight module is disposed under the thin film transistor substrate to provide light, transmittance of light emitted from the backlight module is adjusted according to a state of arrangement of liquid crystals, the backlight module is classified into an edge-lighting type backlight module and a direct-lighting type backlight module, and a light source is located at one side or bottom of a light guide plate. Generally, the optical recessed dots are formed on the bottom surface of the light guide plate, and a light beam emitted by a light source reaches the inside of the light guide plate, then is reflected or refracted by the optical recessed dots to change the traveling direction of the light beam, and finally leaves the light guide plate through the light-emitting top surface of the light guide plate. The light guide plate is used for guiding the propagation direction of light beams generated by the light source, improving the luminance of the backlight module and ensuring the uniformity of the brightness of the backlight module, so that a point light source or a linear light source in the backlight module is converted into a surface light source to be provided for the liquid crystal display panel.
Because the small-diameter backlight module has design and manufacturing process tolerance, certain gaps exist among the film layers in the backlight module, the material characteristics of the film layers have certain hygroscopicity, the hygroscopicity of the film layers are different, and particularly, the difference of the contraction and expansion capacities of the light guide plate and the upper and lower film layers is caused, so that wrinkles are generated on the surface of the light guide plate, the phenomenon that the light guide plate converts light source emergent rays is bad, and the display quality of the display panel is influenced.
In summary, in the backlight module in the prior art, the problem of ripple of the light output caused by the moisture absorption capability of the light guide plate at each position affects the light output quality of the backlight module, which causes the technical problem of reduced use experience, and needs to be improved.
Disclosure of Invention
The embodiment of the application provides a light guide plate and backlight unit, can solve among the prior art backlight unit light guide plate because of everywhere moisture absorption ability, cause the light-emitting to be corrugated problem, influence backlight unit's light-emitting quality, cause to use the technical problem who experiences the decline.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the embodiment of the application provides a light guide plate, including the light-emitting side and with the side in a poor light of the relative setting of light-emitting side, the side in a poor light is kept away from light-emitting side one side is provided with the drying layer, the drying layer includes evenly distributed's moisture absorption particle.
In the light guide plate of the present application, the moisture absorbing particles are distributed in a spatial three-dimensional model, which is a face-centered cubic structure and/or a body-centered cubic structure, wherein the moisture absorbing particles are distributed at corners of the spatial three-dimensional model, at the center of each face, and at the center of the spatial three-dimensional model.
In the light guide plate of the present application, the moisture absorption particles include skeleton particles and auxiliary particles filled between the skeleton particles, the skeleton particles have a diameter ranging from 30 μm to 60 μm, and the auxiliary particles have a diameter ranging from 10 μm to 30 μm.
In the light guide plate of the present application, gap particles having a diameter in a range of 0.1 to 10 μm for exchanging or transferring moisture are further disposed between the skeleton particles and the auxiliary particles.
In the light guide plate of the present application, the material of the skeleton particles, the auxiliary particles and the gap particles is one or more of transparent silicon dioxide, zirconium dioxide, titanium dioxide, calcium oxide and calcium nitride.
In the light guide plate of the application, the light guide plate comprises a lens pattern distributed in an array, and the diameter of the lens pattern is larger than that of the moisture absorption particles.
According to the above light guide plate, the present application further provides a backlight module, comprising:
the back plate comprises a bottom plate and a side plate, and the bottom plate and the side plate form an accommodating cavity.
And the reflecting sheet is positioned above the bottom plate and used for reflecting the light leaked from the accommodating cavity back.
And the light source is arranged above the reflector plate.
The light guide plate comprises a light conversion layer and a drying layer which is positioned on one side, close to the bottom plate, of the light conversion layer, wherein the drying layer comprises moisture absorption particles which are uniformly distributed and used for converting incident light emitted by the light source into light rays which are perpendicular to the bottom plate.
And the optical film material is positioned above the light guide plate and used for gathering the divergent light emitted by the light guide plate in a preset range and emitting the convergent light, and the brightness of the backlight module is improved.
In the backlight module of this application, the moisture absorption particle is the distribution of space three-dimensional model, and this space three-dimensional model is face-centered cubic structure and/or body-centered cubic structure, and wherein, the moisture absorption particle distributes in the edges and corners of space three-dimensional model, the center of every face and the center of space three-dimensional model.
In the backlight module of the application, the moisture absorption particles comprise skeleton particles and auxiliary particles filled between the skeleton particles, the diameter of the skeleton particles is in the range of 60-30 μm, the diameter of the auxiliary particles is in the range of 10-30 μm, gap particles are further arranged between the skeleton particles and the auxiliary particles, and the diameter of the gap particles is in the range of 0.1-10 μm and used for exchanging or transferring moisture.
In the backlight module of the application, the material of the skeleton particles, the auxiliary particles and the gap particles is one or more than one of transparent silicon dioxide, zirconium dioxide, titanium dioxide, calcium oxide and calcium nitride.
Has the advantages that: the embodiment of the application provides a light guide plate and backlight unit, and the light guide plate includes the light conversion layer and is located the dry layer on light conversion layer surface in this application, and the dry layer includes evenly distributed's moisture absorption particle. The moisture absorption particle comprises a framework particle, an auxiliary particle filled between the framework particles and a gap particle between the framework particle and the auxiliary particle, the framework particle and the auxiliary particle are used for absorbing moisture, the gap particle is used for exchanging or transferring moisture, it can be ensured that all parts of the light guide plate absorb water vapor uniformly, and the inside of the backlight module is ensured to be dry, in addition, the materials of the framework particle, the auxiliary particle and the gap particle are preferably transparent silicon dioxide crystal particles, the effect of the light guide plate is not influenced, thereby ensuring that all parts of the light guide plate have the same shrinkage and expansion capacity, the light guide plate is not easy to generate corrugate, the abnormal phenomenon of light emission is avoided, and the light emission.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a light guide plate according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of an arrangement structure of moisture absorption particles in a drying layer of a light guide plate according to an embodiment of the present disclosure.
Fig. 3 is a schematic view of another arrangement structure of moisture-absorbing particles in a drying layer in a light guide plate according to an embodiment of the present disclosure.
Fig. 4 is a schematic view of another arrangement structure of moisture-absorbing particles in a drying layer of a light guide plate according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals, and broken lines in the drawings indicate that the elements do not exist in the structures, and only the shapes and positions of the structures are explained. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
This application causes the light-emitting to be corrugated problem because of moisture absorption ability everywhere among the backlight unit among the prior art to the light guide plate, influences backlight unit's light-emitting quality, causes to use the technical problem who experiences the decline, and this defect can be solved in this application.
As shown in fig. 1, an embodiment of the present application provides a light guide plate 100, which includes a light exit side 1011 and a backlight side 1012 opposite to the light exit side 1011, wherein a drying layer is disposed on a side of the backlight side 1012 away from the light exit side 1011, the drying layer includes uniformly distributed moisture absorbing particles 102, the moisture absorbing particles 102 are distributed in a spatial three-dimensional model, the spatial three-dimensional model is a face-centered cubic structure and/or a body-centered cubic structure, and the moisture absorbing particles 102 are distributed at corners of the spatial three-dimensional model, centers of each face, and centers of the spatial three-dimensional model, refer to fig. 2, fig. 3, and fig. 4. The moisture absorption particles 102 include skeleton particles 1021, and auxiliary particles 1022 filled between the skeleton particles 1021, the diameter of the skeleton particles 1021 is in a range from 30 μm to 60 μm, the diameter of the auxiliary particles 1022 is in a range from 10um to 30 μm, the skeleton particles 1021 and the auxiliary particles 1022 are mainly used for absorbing moisture, it is ensured that the light conversion layer 101 is dry and the moisture is uniformly distributed, next, gap particles 1023 are further arranged between the skeleton particles 1021 and the auxiliary particles 1022, the diameter of the gap particles 1023 is in a range from 0.1um to 10 μm, the gap particles 1023 are used for exchanging or transferring moisture, it is ensured that moisture is uniformly absorbed by each part of the light guide plate 100, and it is ensured that the light guide plate 100 is dry in a backlight module corresponding to the light guide plate 100, the problem that the light guide plate 100 is corrugated due to different humidity at the edge is solved, and the. The skeleton particles 1021, the auxiliary particles 1022, and the gap particles 1023 are formed by a silica crystal particle evaporation process, and are combined together by intermolecular force, and since the silica crystal particles are transparent and have micron-sized dimensions, the light-emitting quality of the light conversion layer 101 is not affected. In this embodiment, the material of the framework particles 1021, the auxiliary particles 1022 and the gap particles 1023 may be one or more of zirconium dioxide, titanium dioxide, calcium oxide and calcium nitride.
The light conversion layer 101 is arranged between the light emitting side 1011 and the backlight side 1012, the light conversion layer 101 comprises lens patterns distributed in an array, and the diameter of the lens patterns is larger than that of the moisture absorption particles, so that the light emitting efficiency of the light conversion layer 101 is improved. The lens patterns comprise a light inlet surface, a light outlet surface and a conversion medium positioned between the light inlet surface and the light outlet surface, the light inlet surface is an arc concave surface, the arc opening faces the light outlet direction of the light source, after the light enters the conversion medium at the light inlet surface, the conversion medium converts the light entering at a small angle into the light exiting at a large angle, and the light outlet surface is an arc convex surface, so that the light source efficiency is improved, and the overall brightness of the light guide plate 100 is improved.
As shown in fig. 5, an embodiment of the present application provides a backlight module 200, including: the back plate 201 comprises a bottom plate 2011, and a left side plate 2012 and a right side plate 2013 which are positioned at two sides of the bottom plate 2011, and the bottom plate 2011, the left side plate 2012 and the right side plate 2013 form an accommodating cavity; a reflective sheet 202 located above the bottom plate 2011 for reflecting light leaking from the receiving chamber back again; the light source 203 is arranged above the reflector plate 202 and comprises a plurality of light bars and LED lamps fixed on the light bars, and the width of the LED light bars is the same, so that the design of a narrow frame of the backlight module is facilitated; the light guide plate 204 includes a light conversion layer 2041 and a drying layer 2045 located on one side of the light conversion layer 2041 close to the bottom plate 2011, wherein the drying layer 2045 includes uniformly distributed moisture absorption particles for converting incident light emitted by the light source into light perpendicular to the bottom plate; the optical film material 205 is located above the light guide plate 204 and includes a diffusion plate 2051, a prism sheet 2052 and a brightness enhancement film 2053, the diffusion plate 2051 is used for converting the light emitted from the light guide plate 204 into soft plane light, the prism sheet 2052 concentrates the dispersed light to emit in a certain angle range by using total reflection and refraction law, thereby improving the brightness in the emitting range, condensing the soft plane light to emit in a preset range, and improving the brightness of the backlight module 200.
Specifically, backlight unit 200 at this application includes light guide plate 204, and light guide plate 204 includes light conversion layer 2041 and is located light conversion layer 2041 and is close to bottom plate 2011 one side drying layer, and drying layer includes evenly distributed's moisture absorption granule 2045, and moisture absorption granule 2045 is the distribution of space three-dimensional model, and this space three-dimensional model is face-centered cubic structure and/or body-centered cubic structure, and wherein, moisture absorption granule 2045 distributes at the edge of space three-dimensional model, the center of each face and the center of space three-dimensional model, refer to fig. 2, fig. 3 and fig. 4. The moisture absorption particles 2045 include skeleton particles 2041 and auxiliary particles 2043 filled between the skeleton particles 2042, the diameter of the skeleton particles 2042 is in a range from 30 μm to 60 μm, the diameter of the auxiliary particles 2043 is in a range from 10 μm to 30 μm, the skeleton particles 2042 and the auxiliary particles 2043 are mainly used for absorbing moisture, it is ensured that the light conversion layer 2041 is dry and the moisture is distributed uniformly, gap particles 2044 are further arranged between the skeleton particles 2042 and the auxiliary particles 2043, the diameter of the gap particles 2044 is in a range from 0.1 μm to 10 μm, the gap particles are used for exchanging or transferring moisture, it is ensured that moisture absorbed at each part of the light guide plate 204 is uniform, and the backlight module corresponding to the light guide plate 204 is dry, the problem that the light guide plate 204 is corrugated due to different humidities at the edge is solved, and the light output quality of the backlight module 200 is improved. The skeleton particles 2042, the auxiliary particles 2043, and the gap particles 2044 are prepared by a silica crystal particle evaporation process, and are combined together by intermolecular force, and since the silica crystal particles are transparent and have micron-sized dimensions, the light-emitting quality of the light conversion layer 2041 is not affected. In this embodiment, the material of the framework particles 2042, the auxiliary particles 2043 and the gap particles 2044 may also be one or more of zirconium dioxide, titanium dioxide, calcium oxide and calcium nitride.
According to the backlight module 200, the present application further provides a display device, as shown in fig. 6, the display device 300 includes the backlight module, a display module 301 located on a surface of the backlight module, and a protective cover plate 302 located on a surface of the display module 301, wherein structures and corresponding reference numerals in the backlight module are the same as those in fig. 5, and are not repeated herein; the display device 300 further includes a display module 301 and a driving circuit electrically connected to the display module 301. The display module 301 includes an array substrate 3011, a color filter substrate 3013, and a liquid crystal layer 3012 sandwiched between the array substrate 3011 and the color filter substrate 3013, and the protective cover 302 is preferably a glass cover, where the array substrate 3011 is generally a thin film transistor substrate and includes a substrate, a light-shielding layer disposed on the substrate, a buffer layer disposed on the substrate and covering the light-shielding layer, an active layer disposed on the buffer layer, a gate insulating layer disposed on the active layer, a gate electrode disposed on the gate insulating layer, an interlayer dielectric layer disposed on the buffer layer and covering the gate electrode and the active layer, a source electrode and a drain electrode disposed on the interlayer dielectric layer, a passivation layer disposed on the interlayer dielectric layer and covering the source electrode and the drain electrode, and a pixel electrode layer disposed on the.
The embodiment of the application provides a light guide plate and backlight unit, and the light guide plate includes the light conversion layer and is located the dry layer on light conversion layer surface in this application, and the dry layer includes evenly distributed's moisture absorption particle. The moisture absorption particle comprises a framework particle, an auxiliary particle filled between the framework particles and a gap particle between the framework particle and the auxiliary particle, the framework particle and the auxiliary particle are used for absorbing moisture, the gap particle is used for exchanging or transferring moisture, it can be ensured that all parts of the light guide plate absorb water vapor uniformly, and the inside of the backlight module is ensured to be dry, in addition, the materials of the framework particle, the auxiliary particle and the gap particle are preferably transparent silicon dioxide crystal particles, the effect of the light guide plate is not influenced, thereby ensuring that all parts of the light guide plate have the same shrinkage and expansion capacity, the light guide plate is not easy to generate corrugate, the abnormal phenomenon of light emission is avoided, and the light emission.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. The utility model provides a light guide plate, its characterized in that, including the light-emitting side and with the side in a poor light of the relative setting of light-emitting side, the side in a poor light is kept away from light-emitting side one side is provided with the drying layer, the drying layer includes evenly distributed's moisture absorption particle.
2. The light guide plate according to claim 1, wherein the moisture-absorbing particles are distributed in a spatial cubic pattern having a face-centered cubic structure and/or a body-centered cubic structure, wherein the moisture-absorbing particles are distributed at corners of the spatial cubic pattern, at a center of each face, and at a center of the spatial cubic pattern.
3. The light guide plate according to claim 2, wherein the moisture absorbing particles comprise skeleton particles and auxiliary particles filled between the skeleton particles, the skeleton particles have a diameter in a range of 30 μm to 60 μm, and the auxiliary particles have a diameter in a range of 10 μm to 30 μm.
4. The light guide plate according to claim 3, wherein gap particles having a diameter in a range of 0.1 μm to 10 μm for exchanging or transferring moisture are further disposed between the skeleton particles and the auxiliary particles.
5. The light guide plate according to claim 4, wherein the material of the skeleton particles, the auxiliary particles and the gap particles is one or more of transparent silicon dioxide, zirconium dioxide, titanium dioxide, calcium oxide and calcium nitride.
6. The light guide plate according to claim 1, wherein the light guide plate comprises a lens pattern distributed in an array, and the diameter of the lens pattern is larger than that of the moisture-absorbing particles.
7. A backlight module, comprising:
the back plate comprises a bottom plate and a side plate, and the bottom plate and the side plate form an accommodating cavity;
a reflective sheet located above the bottom plate for reflecting light leaking from the receiving cavity back again;
a light source disposed above the reflective sheet;
the light guide plate comprises a light conversion layer and a drying layer which is positioned on one side of the light conversion layer close to the bottom plate, wherein the drying layer comprises uniformly distributed moisture absorption particles and is used for converting incident light emitted by the light source into light rays vertical to the bottom plate;
and the optical film material is positioned above the light guide plate and used for gathering the divergent light emitted by the light guide plate in a preset range and emitting the convergent light, and the brightness of the backlight module is improved.
8. The backlight module according to claim 7, wherein the moisture absorbing particles are distributed in a spatial three-dimensional model having a face-centered cubic structure and/or a body-centered cubic structure, wherein the moisture absorbing particles are distributed at corners of the spatial three-dimensional model, at a center of each face, and at a center of the spatial three-dimensional model.
9. The backlight module according to claim 8, wherein the moisture absorbing particles comprise skeleton particles and auxiliary particles filled between the skeleton particles, the skeleton particles have a diameter of 60-30 μm, the auxiliary particles have a diameter of 10-30 μm, and gap particles having a diameter of 0.1-10 μm are disposed between the skeleton particles and the auxiliary particles for exchanging or transferring moisture.
10. The backlight module as claimed in claim 9, wherein the material of the skeleton particles, the auxiliary particles and the gap particles is one or more of transparent silicon dioxide, zirconium dioxide, titanium dioxide, calcium oxide and calcium nitride.
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| CN202010572053.6A CN111679359B (en) | 2020-06-22 | 2020-06-22 | Light guide plate and backlight module |
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| CN202010572053.6A CN111679359B (en) | 2020-06-22 | 2020-06-22 | Light guide plate and backlight module |
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| CN111679359B CN111679359B (en) | 2022-05-27 |
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