CN111781670B - Light guide plate and light source module - Google Patents
Light guide plate and light source module Download PDFInfo
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- CN111781670B CN111781670B CN202010644593.0A CN202010644593A CN111781670B CN 111781670 B CN111781670 B CN 111781670B CN 202010644593 A CN202010644593 A CN 202010644593A CN 111781670 B CN111781670 B CN 111781670B
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- strip
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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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
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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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
Abstract
The invention provides a light source module, which comprises a light guide plate and a plurality of light emitting elements. The light guide plate provided by the invention is provided with a light incident surface and comprises a plurality of strip-shaped supporting structures and a plurality of strip-shaped light incident structures. The strip-shaped supporting structures are arranged on the light incident surface. The strip-shaped light incident structures are arranged on the light incident surface. The curvature radius of a first vertex angle of the strip-shaped support structures far away from the light inlet face is larger than that of a second vertex angle of the strip-shaped light inlet structures far away from the light inlet face, and the height of the strip-shaped support structures in the direction perpendicular to the light inlet face is larger than that of the strip-shaped light inlet structures in the direction perpendicular to the light inlet face. A plurality of strip-shaped light incident structures are arranged between any two adjacent strip-shaped support structures. The light emitting elements are arranged beside the light incident surface and used for emitting light rays to the light incident surface. The light guide plate and the light source module provided by the invention have the effects of improving the brightness uniformity and avoiding the damage of the light guide plate.
Description
Technical Field
The present invention relates to a light source module, and more particularly, to a light guide plate and a light source module using the same.
Background
The general lcd device includes an lcd panel and a backlight module, and the main function of the backlight module is to provide a high brightness and high uniformity illumination source.
The backlight module can be divided into a side-in type backlight module and a direct type backlight module. In the conventional side-in backlight module, a plurality of light emitting diodes are arranged at intervals beside a light incident surface of a light guide plate, so that a plurality of bright regions corresponding to the plurality of light emitting diodes and a dark region between two light emitting diodes are generated after emitted light enters the light guide plate through the light incident surface, thereby forming a Hot spot phenomenon with non-uniform brightness.
The solution of the prior art is to reduce the firefly phenomenon by processing the micro-structure on the light incident surface. The types of microstructures can be roughly divided into triangular prism columns and semicircular prism columns. The triangular prism column has a good light-dispersing effect, but the sharp part facing the light source is easy to scratch the light source and cause damage to the prism column. Although the semi-circular prism column is not easy to scratch the light source, the effect of dispersing light is poor, and the effect of slowing down the fluorescence pest phenomenon is limited.
The background section is provided to facilitate an understanding of the present disclosure, and thus the disclosure in the background section may include some prior art that does not constitute a part of the present disclosure. Furthermore, the disclosure in the "background" section is not intended to represent a representation of the disclosure or of the problems one or more embodiments of the present invention would solve, nor is it intended to be interpreted as being known or appreciated by those skilled in the art prior to the filing date of the present application.
Disclosure of Invention
The invention provides a light guide plate which can improve the brightness uniformity.
The invention provides a light source module, which can improve the brightness uniformity and avoid the damage of a light guide plate and a light emitting element.
Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.
In order to achieve one or a part of or all of the above or other objects, an embodiment of the invention provides a light guide plate having a light incident surface, and including a plurality of strip-shaped supporting structures and a plurality of strip-shaped light incident structures. The strip-shaped supporting structures are arranged on the light incident surface. The strip-shaped light incident structures are arranged on the light incident surface. The curvature radius of a first vertex angle of the strip-shaped support structures far away from the light inlet face is larger than that of a second vertex angle of the strip-shaped light inlet structures far away from the light inlet face, and the height of the strip-shaped support structures in the direction perpendicular to the light inlet face is larger than that of the strip-shaped light inlet structures in the direction perpendicular to the light inlet face. A plurality of strip-shaped light incident structures are arranged between any two adjacent strip-shaped support structures.
In order to achieve one or a part of or all of the above or other objects, an embodiment of the invention provides a light source module including a plurality of light emitting elements and the light guide plate. The light emitting elements are arranged beside the light incident surface and used for emitting light rays to the light incident surface.
In the light source module of the embodiment of the invention, the curvature radius of the first vertex angle of the strip-shaped support structures far away from the light incident surface is larger than the curvature radius of the second vertex angle of the strip-shaped light incident structures far away from the light incident surface, and the height of the strip-shaped support structures in the direction vertical to the light incident surface is larger than the height of the strip-shaped light incident structures in the direction vertical to the light incident surface, so that the strip-shaped light incident structures can reduce the damage caused by the contact with the light emitting element arranged beside the light incident surface. In addition, the curvature radius of the second vertex angle of the strip light incident structure is smaller, so that a better light ray dispersing effect can be achieved. When the light emitted by the light emitting elements is incident to the light guide plate, the strip-shaped light incident structure can disperse the light, so that the light can be transmitted to the dark area of the light guide plate corresponding to the two light emitting elements, and the phenomenon of fluorescence worms is reduced, thereby improving the brightness uniformity.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic perspective view of a light source module according to an embodiment of the invention.
Fig. 2 is a schematic top view of the region a of fig. 1.
FIG. 3 is a schematic view of a light guide region according to another embodiment of the present invention.
Fig. 4 is a schematic perspective view of a light source module according to another embodiment of the invention.
List of reference numerals
10. 10a light source module
100. 100a light guide plate
110. 110a incident light surface
111. 111a light guide region
120, light-emitting surface
130, strip-shaped supporting structure
140 strip-shaped light incident structure
200 light emitting element
A is an area
a1 first corner angle
a2 second corner angle
B the first direction
C the second direction
D1 and D2 distance
H1, H2 height
R1 radius of curvature
L is light.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of a preferred embodiment when read in conjunction with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
Fig. 1 is a schematic perspective view of a light source module according to an embodiment of the invention. Fig. 2 is a schematic top view of the region a of fig. 1. Referring to fig. 1 and 2, a light source module 10 of the present embodiment includes a light guide plate 100 and a plurality of light emitting elements 200. The light guide plate 100 has a light incident surface 110 and a light emitting surface 120. The light emitting surface 120 is adjacent to the light incident surface 110, and specifically, the light emitting surface 120 is perpendicular to the light incident surface 110. The light emitting elements 200 are disposed beside the light incident surface 110 and configured to emit light L to the light incident surface 110, specifically, the light source module 10 of the present embodiment is a side-in backlight module. The light guide plate 100 includes a plurality of strip-shaped support structures 130 and a plurality of strip-shaped light incident structures 140. The plurality of strip-shaped supporting structures 130 are disposed on the light incident surface 110, and the plurality of strip-shaped light incident structures 140 are also disposed on the light incident surface 110. The strip-shaped support structures 130 and the strip-shaped light incident structures 140 respectively extend along a first direction B from being close to the light exit surface 120 to being far away from the light exit surface 120, and the strip-shaped support structures 130 and the strip-shaped light incident structures 140 are arranged along a second direction C. The first direction B is, for example, not parallel to the second direction C. In the embodiment, the first direction B is, for example, a direction perpendicular to the light emitting surface 120 (for example, a direction parallel to a normal of the light emitting surface 120), and the second direction C is, for example, a direction parallel to the light emitting surface 120, or a direction parallel to the light emitting surface 120 and the light incident surface 110, but not limited thereto. Specifically, the strip-shaped supporting structures 130 and the strip-shaped light incident structures 140 disposed on the light incident surface 110 are light permeable elements, and are used for allowing the light L emitted by the light emitting element 200 to penetrate and transmit into the light guide plate 100, and the strip-shaped supporting structures 130 and the strip-shaped light incident structures 140 have a light splitting effect, which is different from the light splitting effect.
In the embodiment, the light incident surface 110 has a plurality of light guiding regions 111 arranged at intervals, the light guiding regions 111 correspond to the plurality of light emitting elements 200 respectively, specifically, the width of the projection region of the light emitting element 200 on the light incident surface 110 expanded by 1.25 times to two sides is the light guiding region 111, and the adjacent light guiding regions 111 are not connected, but the invention is not limited thereto, and the range of the light guiding region 111 can be adjusted according to the range of the light L emitted by the light emitting element 200 incident on the light incident surface 110. The strip-shaped supporting structures 130 and the strip-shaped light incident structures 140 are disposed in the light guiding regions 111, for example, wherein at least one strip-shaped supporting structure 140 is disposed in each light guiding region 111. In one embodiment, the light guide regions 111 may be connected together; in another embodiment, the light guide regions 111 are separated from each other, that is, the light incident surface 110 has a region without microstructures, for example, the portion of the light non-guide region 111 is not provided with the strip-shaped support structure 130 or the strip-shaped light incident structure 140, but is not limited thereto.
Referring to fig. 1, the number of the light emitting devices 200 in fig. 1 is 3 for example, but not limited thereto. The light emitting element 200 may be a Light Emitting Diode (LED), but the invention is not limited to the type of light source. The number of light guiding regions 111 corresponds to the number of light emitting elements 200, and the present invention is not particularly limited to the number of light guiding regions 111 and light emitting elements 200 when the corresponding arrangement relationship is satisfied.
Further, referring to fig. 2, a radius of curvature R1 of a first vertex a1 of the bar-shaped support structures 130 away from the light incident surface 110 is greater than a radius of curvature (not shown) of a second vertex a2 of the bar-shaped light incident structures 140 away from the light incident surface 110. Specifically, in an embodiment, the shape of the strip-shaped support structure 130 is, for example, a triangular prism column shape having a first vertex angle a1 of an arc, and the curvature radius R1 of the first vertex angle a1 is 20 μm to 80 μm, where the first vertex angle a1 refers to a vertex angle of the strip-shaped support structure 130 away from the light incident surface 110. In another embodiment, the shape of the bar-shaped supporting structure 130 is, for example, a semi-cylinder, and it is specifically noted that the term "semi-cylinder" does not limit the arc shape of the cross section to be a semi-circle, but may also be a minor arc or other smooth curve, and the curvature radius R1 is 20 μm to 80 μm, where the first vertex angle a1 refers to the portion of the bar-shaped supporting structure 130 farthest from the light incident surface 110, for example, if the cross section of the bar-shaped supporting structure 130 is a semi-circle, the curvature radius R1 of the first vertex angle a1 is the radius of the semi-circle of the cross section of the bar-shaped supporting structure 130; in other embodiments, the shape of the bar-shaped supporting structure 130 may also be a combination of a quadrangular column and a semicircular column, and the invention is not limited thereto. The shape of the strip-shaped light incident structure 140 is, for example, a triangular prism, and an angle range of a second vertex angle a2 of the strip-shaped light incident structure 140 away from the light incident surface 110 is 70 ° to 110 °. Therefore, in the embodiment, the curvature radius of the second vertex angle a2 of the stripe light incident structure 140 is nearly infinitesimal, and the curvature radius of the stripe light incident structure 140 is not shown in fig. 2, but the invention is not particularly limited to the type of the stripe light incident structure 140 as long as the light incident structure can achieve a better light scattering effect, for example, the micro-structure process is limited, and the curvature radius of the second vertex angle a2 of the stripe light incident structure 140 may be 1um or 5um, but the invention is not limited thereto.
In addition, the height H1 of the strip-shaped support structures 130 in the direction perpendicular to the light incident surface 110 is greater than the height H2 of the strip-shaped light incident structures 140 in the direction perpendicular to the light incident surface 110, the heights H1 of the strip-shaped support structures 130 are, for example, the same, and the heights H2 of the strip-shaped light incident structures 140 are, for example, the same. Specifically, the bar-shaped support structures 130 have the same size, and the bar-shaped light incident structures 140 have the same size, but the invention is not limited thereto.
In the present embodiment, the height H1 of the stripe-shaped supporting structures 130 is 10 μm to 50 μm, and the height H2 of the stripe-shaped light incident structure 140 is 5 μm to 30 μm.
A plurality of strip light incident structures 140 are disposed between any two adjacent strip support structures 130. Specifically, the number of the strip light incident structures 140 is, for example, greater than that of the strip support structures 130, but not limited thereto. In the present embodiment, two strip light incident structures 140 are disposed between any two adjacent strip supporting structures 130, but the present invention is not limited thereto. The number of the strip light incident structures 140 disposed between any two adjacent strip support structures 130 may also be different.
In the light source module 10 of the present embodiment, a curvature radius R1 of the first vertex angle a1 of the strip-shaped support structures 130 away from the light incident surface 110 is greater than a curvature radius of the second vertex angle a2 of the strip-shaped light incident structures 140 away from the light incident surface 110, and a height H1 of the strip-shaped support structures 130 in a direction perpendicular to the light incident surface 110 is greater than a height H2 of the strip-shaped light incident structures 140 in a direction perpendicular to the light incident surface 110. Therefore, the strip-shaped supporting microstructures 130 having the arc first vertex angle a1 contact the light emitting element 200 disposed beside the light incident surface 110, and the strip-shaped light incident structure 140 can avoid damage caused by contact with the light emitting element 200, and to achieve this effect, at least one strip-shaped supporting structure 130 is disposed corresponding to each light guiding region 111 of each light emitting element 200 in the embodiment. In addition, since the curvature radius of the second vertex angle a2 of the stripe-shaped light incident structure 140 is smaller, a better light scattering effect can be achieved. When the light L emitted from the light emitting device 200 is incident on the light guide plate 100, the light incident structure 140 can disperse a portion of the light L, so that the portion of the light L can be transmitted to the dark area of the light guide plate 100 corresponding to the two light emitting devices 200, thereby reducing the phenomenon of fluorescence, and improving the brightness uniformity.
FIG. 3 is a schematic view of a light guide region according to another embodiment of the present invention. Referring to fig. 3, the light guiding region 111a of the present embodiment has a similar structure and advantages to the light guiding region 111 described above, and the difference is only that in the light guiding region 111a of the present embodiment, a distance D1 is provided between each strip-shaped supporting structure 130 and each adjacent strip-shaped light incident structure 140, and/or a distance D2 is provided between any two adjacent strip-shaped light incident structures 140. The distance D1 and the distance D2 may be adjusted according to different light emitting effects, and the distance D1 and the distance D2 are the same in the embodiment, but not limited thereto. In another embodiment, the distance D1 and the distance D2 may be different, for example.
Fig. 4 is a schematic perspective view of a light source module according to another embodiment of the invention. Referring to fig. 4, the light source module 10a of the present embodiment has similar structure and advantages to the light source module 10 described above, and the difference is that in the light source module 10a of the present embodiment, the plurality of strip-shaped supporting structures 130 and the plurality of strip-shaped light incident structures 140 of the light guide plate 100a are further disposed on the non-light-guide region 111 of the light incident surface 110a, that is, the plurality of strip-shaped supporting structures 130 and the plurality of strip-shaped light incident structures 140 are disposed on the whole surface of the light incident surface 110a, that is, the surface of the light incident surface 110a does not have a flat region, and the surface of the light incident surface 110a is provided with the strip-shaped supporting structures 130 or the strip-shaped light incident structures 140. In other embodiments, for example, a gap may be formed between each strip-shaped light incident structure 130 and each strip-shaped light incident structure 140, and/or a gap may be formed between any two adjacent strip-shaped light incident structures 140, and the gap between each strip-shaped light incident structure 130 and each adjacent strip-shaped light incident structure 140 is the same, and/or the gap between any two adjacent strip-shaped light incident structures 140 is the same, which is not limited in the invention.
In summary, in the light source module according to the embodiment of the invention, the curvature radius of the first vertex angle of the plurality of strip-shaped light incident structures away from the light incident surface is greater than the curvature radius of the second vertex angle of the plurality of strip-shaped light incident structures away from the light incident surface, and the height of the strip-shaped support structures in the direction perpendicular to the light incident surface is greater than the height of the strip-shaped light incident structures in the direction perpendicular to the light incident surface. Therefore, the strip-shaped light incident structure can reduce damage caused by contact with the light emitting elements arranged beside the light incident surface, and in order to achieve the effect, at least one strip-shaped supporting structure is arranged corresponding to each light guiding region of each light emitting element in the embodiment. In addition, the curvature radius of the second vertex angle of the strip-shaped light incidence structure is smaller, so that a better light ray dispersing effect can be achieved. When the light emitted by the light emitting elements is incident to the light guide plate, the strip-shaped light incident structure can disperse the light, so that the light can be transmitted to the dark area of the light guide plate corresponding to the two light emitting elements, and the phenomenon of fluorescence worms is reduced, thereby improving the brightness uniformity.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents. Moreover, it is not necessary for any embodiment or claim of the invention to achieve all of the objects or advantages or features disclosed herein. Furthermore, the abstract and the title of the specification are provided only for assisting the retrieval of patent documents and are not intended to limit the scope of the present invention. Furthermore, the terms "first," "second," and the like in the description and in the claims are used for naming elements (elements) or distinguishing between different embodiments or ranges, and are not intended to limit the upper or lower limit on the number of elements.
Claims (6)
1. A light guide plate is characterized in that the light guide plate is provided with a light incident surface and comprises a plurality of strip-shaped supporting structures and a plurality of strip-shaped light incident structures, wherein the strip-shaped supporting structures are arranged on the light incident surface
The light incident surface is provided with a plurality of light guide regions which are arranged at intervals;
the strip-shaped supporting structures are arranged on the light incident surface;
the strip light incident structures are arranged on the light incident surface,
the curvature radius of a first vertex angle, far away from the light inlet face, of each strip-shaped support structure is larger than that of a second vertex angle, far away from the light inlet face, of each strip-shaped light inlet structure, the height, in the direction perpendicular to the light inlet face, of each strip-shaped light inlet structure is larger than that of each strip-shaped light inlet structure, and a plurality of strip-shaped light inlet structures are arranged between any two adjacent strip-shaped support structures; the strip-shaped support structures and the strip-shaped light incident structures are arranged in the light guide areas, and each of the light guide areas is at least provided with one strip-shaped support structure; a first distance is formed between each of the plurality of strip-shaped support structures and each of the plurality of strip-shaped light incident structures, a second distance is formed between any two adjacent strip-shaped light incident structures, the first distances are the same as the second distances, the first distances are the same between each of the plurality of strip-shaped support structures and each of the plurality of strip-shaped light incident structures, and the second distances are the same between any two adjacent strip-shaped light incident structures; the plurality of strip-shaped light incidence structures are triangular columns, and the angle range of the second vertex angle is 70-110 degrees; adjacent light guide regions are not connected; the strip-shaped supporting structure or the strip-shaped light inlet structure is not arranged on the part, which is not the light guide region, of the light inlet surface.
2. The light guide plate according to claim 1, wherein the light guide plate further comprises a light exit surface adjacent to the light entrance surface, the plurality of strip-shaped supporting structures and the plurality of strip-shaped light entrance structures respectively extend along a first direction from the light exit surface to the light exit surface, and the plurality of strip-shaped supporting structures and the plurality of strip-shaped light entrance structures are arranged along a second direction, and the first direction is not parallel to the second direction.
3. The light guide plate according to claim 1, wherein the plurality of strip-shaped supporting structures are semi-cylindrical in shape and have a radius of curvature of 20 μm to 80 μm.
4. The light guide plate according to claim 1, wherein the height of the plurality of strip-shaped light entrance structures in a direction perpendicular to the light entrance surface is 10 μm to 50 μm, and the height of the plurality of strip-shaped light entrance structures in a direction perpendicular to the light entrance surface is 5 μm to 30 μm.
5. A light source module comprises a light guide plate and a plurality of light emitting elements
The light guide plate is provided with a light incident surface and comprises a plurality of strip-shaped supporting structures and a plurality of strip-shaped light incident structures, wherein
The light incident surface is provided with a plurality of light guide regions which are arranged at intervals;
the strip-shaped supporting structures are arranged on the light incident surface;
the strip-shaped light incident structures are arranged on the light incident surface,
the curvature radius of a first vertex angle, far away from the light inlet face, of each strip-shaped support structure is larger than that of a second vertex angle, far away from the light inlet face, of each strip-shaped light inlet structure, the height, in the direction perpendicular to the light inlet face, of each strip-shaped light inlet structure is larger than that of each strip-shaped light inlet structure, and a plurality of strip-shaped light inlet structures are arranged between any two adjacent strip-shaped support structures; the strip-shaped support structures and the strip-shaped light incident structures are arranged in the light guide areas, and each of the light guide areas is at least provided with one strip-shaped support structure; a first distance is formed between each of the plurality of strip-shaped support structures and each of the plurality of strip-shaped light incident structures, a second distance is formed between any two adjacent strip-shaped light incident structures, the first distances are the same as the second distances, the first distances are the same between each of the plurality of strip-shaped support structures and each of the plurality of strip-shaped light incident structures, and the second distances are the same between any two adjacent strip-shaped light incident structures; the plurality of strip-shaped light incidence structures are triangular columns, and the angle range of the second vertex angle is 70-110 degrees; adjacent light guide regions are not connected; the strip-shaped supporting structure or the strip-shaped light inlet structure is not arranged on the part, which is not the light guide region, of the light inlet surface;
the light emitting elements are arranged beside the light incident surface and used for emitting light rays to the light incident surface.
6. The light source module of claim 5, wherein the light guide regions correspond to the light emitting elements, respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644593.0A CN111781670B (en) | 2020-07-07 | 2020-07-07 | Light guide plate and light source module |
| TW109208734U TWM605983U (en) | 2020-07-07 | 2020-07-09 | Light guide plate and light source module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644593.0A CN111781670B (en) | 2020-07-07 | 2020-07-07 | Light guide plate and light source module |
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| Publication Number | Publication Date |
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| CN111781670A CN111781670A (en) | 2020-10-16 |
| CN111781670B true CN111781670B (en) | 2022-09-09 |
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| CN202010644593.0A Active CN111781670B (en) | 2020-07-07 | 2020-07-07 | Light guide plate and light source module |
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| CN112859435A (en) * | 2021-01-12 | 2021-05-28 | 扬昕科技(苏州)有限公司 | Light guide plate and light source module |
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2020
- 2020-07-07 CN CN202010644593.0A patent/CN111781670B/en active Active
- 2020-07-09 TW TW109208734U patent/TWM605983U/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900786A (en) * | 2005-07-21 | 2007-01-24 | 鸿富锦精密工业（深圳）有限公司 | Light conductive plate and back light module |
| CN101424769A (en) * | 2007-10-29 | 2009-05-06 | 胜华科技股份有限公司 | Light guide board |
| CN203131596U (en) * | 2012-02-09 | 2013-08-14 | 美蓓亚株式会社 | Plane-shaped lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM605983U (en) | 2021-01-01 |
| CN111781670A (en) | 2020-10-16 |
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