CN210514680U - Light guide plate and light source module - Google Patents
Light guide plate and light source module Download PDFInfo
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- CN210514680U CN210514680U CN201921796854.XU CN201921796854U CN210514680U CN 210514680 U CN210514680 U CN 210514680U CN 201921796854 U CN201921796854 U CN 201921796854U CN 210514680 U CN210514680 U CN 210514680U
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Abstract
The utility model provides a light source module, including light guide plate and a plurality of light emitting component. The light guide plate is provided with a light inlet surface and a light outlet surface, the light inlet surface is connected with the light outlet surface, the light inlet surface is provided with a plurality of first microstructures, the light outlet surface is provided with a plurality of second microstructures, and the first microstructures are not adjacent to the second microstructures. The light emitting elements are arranged beside the light incident surface and used for emitting light rays to the light incident surface. The utility model provides a light guide plate and light source module can reduce the phenomenon production of interference fringe.
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
In general, a liquid crystal display device includes a liquid crystal display panel and a backlight module, and since the liquid crystal display panel itself does not emit light, the backlight module is required to provide an illumination light source to the liquid crystal display panel. Therefore, the main function of the backlight module is to provide an illumination source with high luminance and high uniformity.
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 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 the emitted light enters the light guide plate, and a Hot spot (Hot spot) phenomenon with uneven brightness is formed.
The prior art solves the problem that the hot spot phenomenon is reduced by processing the micro-structure on the light incident surface. However, in the case that the light-emitting surface 10 of the light guide plate 1 of the prior art is covered with the prism columns 11, if the light-entering surface 20 is processed to form the microstructures 21 (as shown in fig. 1, fig. 1 is a schematic view of the light guide plate processed in the prior art), especially the regularly arranged semi-cylindrical prism columns, the existence of the two prisms will cause obvious cross interference fringes, which will further affect the display screen, and the result is shown in fig. 2.
The background section is provided to aid in understanding the present invention, and therefore the disclosure of the background section may include other art that does not constitute a part of the common general knowledge of the skilled person. Furthermore, the disclosure of the "background" does not represent a representation of the disclosure or the problems that may be solved by one or more embodiments of the present invention, or of what is known or appreciated by those of ordinary skill in the art prior to filing the present application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a light guide plate can reduce the phenomenon production of interference fringe.
The utility model provides a light source module can reduce the phenomenon production of interference fringe.
Other objects and advantages of the present invention can be obtained 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 purposes, an embodiment of the present invention provides a light guide plate having a light incident surface and a light emitting surface, wherein the light incident surface is connected to the light emitting surface. The light incident surface is provided with a plurality of first microstructures, and the light emergent surface is provided with a plurality of second microstructures, wherein the first microstructures are not adjacent to the second microstructures.
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 the light guide plate and a plurality of light emitting elements. The light emitting elements are arranged beside the light incident surface and used for emitting light rays to the light incident surface.
The utility model discloses among the light source module, a plurality of first microstructures of income plain noodles on the light guide plate are not adjacent to a plurality of second microstructures on play plain noodles, compare in the known art with prism column or microstructure be covered with the mode on the whole surface of going into plain noodles and play plain noodles in order to reduce the hot phenomenon, the utility model discloses a light source module when a plurality of light emitting component sent light to the income plain noodles of light guide plate, except that a plurality of first microstructures of going into the plain noodles can reduce the hot phenomenon, make a plurality of first microstructures and a plurality of second microstructures not adjacent can also reduce the phenomenon production of interference fringe.
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 view of a processed light guide plate in the prior art.
FIG. 2 is a diagram illustrating the interference fringes produced by a light guide plate processed by a known technique.
Fig. 3 is a schematic perspective view of a light source module according to an embodiment of the present invention.
Fig. 4 is a schematic perspective view of a light source module according to another embodiment of the present invention.
List of reference numerals
1. 100, 100 a: light guide plate
10. 112, 112 a: light emitting surface
11: prism column
20. 111, 111 a: light incident surface
21: microstructure
100. 100 a: light source module
120: light emitting element
1111. 1111 a: first microstructure
1112: second spacer region
1121. 1121 a: second microstructure
1122: first spaced apart region
A. A1, a2, A3: length of
E1: first direction of extension
E2: second direction of extension
L: light ray
P: direction of arrangement
W, W1, W2: width.
Detailed Description
The foregoing and other technical and scientific aspects, features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments, which is to be read in connection 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. 3 is a schematic perspective view of a light source module according to an embodiment of the present invention. Referring to fig. 3, the light source module 100 of the present embodiment includes a light guide plate 110 and a plurality of light emitting elements 120. The light guide plate 110 has a light incident surface 111 and a light emitting surface 112, the light incident surface 111 is connected to the light emitting surface 112, and specifically, the light incident surface 111 is, for example, perpendicular to the light emitting surface 112, but not limited thereto. The light incident surface 111 has a plurality of first microstructures 1111, and the light emitting surface 112 has a plurality of second microstructures 1121, wherein the first microstructures 1111 are not adjacent to the second microstructures 1121. The light emitting elements 120 are disposed beside the light incident surface 111 and are configured to emit light L to the light incident surface 111. The number of the light emitting elements 120 in fig. 1 is 3 as an example, but not limited thereto. The light emitting element 120 may be a Light Emitting Diode (LED), but the present invention is not limited to the type of light source.
In the embodiment, the plurality of first microstructures 1111 of the light guide plate 110 are disposed on the entire surface of the light incident surface 111, and a first spacing region 1122 is disposed on a side of the light emergent surface 112 adjacent to the light incident surface 111, that is, the first spacing region 1122 is adjacent to the plurality of first microstructures 1111. The first spacer region 1122 does not have the second microstructures 1121 and is a flat surface. In this embodiment, the term "flat surface" means that the first spacer regions 1122 of the light output surface 112 do not have microstructures or irregularities, or the first spacer regions 1122 may be subjected to a polishing process in order to reduce the influence of surface roughness.
According to different design requirements, the width W1 of the first spacer region 1122 in the first extending direction E1 perpendicular to the light incident surface 111 is, for example, 3mm to 5mm, 10mm, or more than 10mm, preferably 3mm to 5 mm. The length a1 of the first spacer regions 1122 in the arrangement direction P parallel to the light incident surface 111 is the same as the length a of the light emitting surface 112, and the arrangement direction P is, for example, parallel to the light incident surface 111 and the light emitting surface 112. However, the present invention is not limited thereto, and in other embodiments, the first spaced regions 1122 may include a plurality of regions spaced along the arrangement direction P, each region having a length less than the length a, and the plurality of regions may be selectively disposed corresponding to the light emitting elements 120.
The plurality of second microstructures 1121 includes, for example, but is not limited to, prism columns. The prism columns 1121 are arranged along the arrangement direction P parallel to the light incident surface 111 and extend along a first extending direction E1 perpendicular to the light incident surface 111. In fig. 3, the plurality of second microstructures 1121 are disposed in all regions of the light-emitting surface 112 except the first spacing regions 1122, but the present invention is not limited to the shape, distribution and arrangement of the plurality of second microstructures 1121, as long as the second microstructures 1121 do not extend to the first spacing regions 1122.
The plurality of first microstructures 1111 include, for example, prism columns or dots, but are not limited thereto. The first microstructures 1111 in fig. 3 are illustrated as regularly arranged semicircular prism columns extending along the second extending direction E2 perpendicular to the light emitting surface, or the first microstructures 1111 may also be a semicircular column structure recessed into the light guide plate 110 and also extending along the second extending direction E2, in this embodiment, each of the first microstructures 1111 may have the same size selectively. In another embodiment, the plurality of first microstructures 1111 are, for example, mesh points, and specific embodiments include pits, bumps, or rough lines.
In the light source module 100 of this embodiment, the plurality of first microstructures 1111 of the light incident surface 111 of the light guide plate 110 are not adjacent to the plurality of second microstructures 1121 of the light emitting surface 112, and compared to the conventional art in which the prism columns or microstructures are distributed on the whole surface of the light incident surface and the light emitting surface to reduce the hot spot phenomenon, the light source module 100 of the embodiment of the present invention can reduce the hot spot phenomenon when the plurality of light emitting elements 120 emit light L to the light incident surface 111 of the light guide plate 110, except that the plurality of first microstructures 1111 of the light incident surface 111 can reduce the hot spot phenomenon, so that the plurality of first microstructures 1111 are not adjacent to the plurality of second microstructures 1121 to reduce the generation of the interference fringes.
Fig. 4 is a schematic perspective view of a light source module according to another embodiment of the present invention. Referring to fig. 4, the light source module 100a of the present embodiment has a similar structure and advantages to the light source module 100 described above, and only the main differences of the structure will be described below. Compared to the light source module 100 shown in fig. 3, in the light source module 100a of the present embodiment, the light incident surface 111a has a plurality of first microstructures 1111a, the light emitting surface 112a has a plurality of second microstructures 1121a, and the plurality of second microstructures 1121a of the light guide plate 110a are disposed on the entire surface of the light emitting surface 112 a. The light incident surface 111a has a second spacing region 1112 on a side adjacent to the light emitting surface 112a, and the second spacing region 1112 does not have the first microstructures 1111a and is a flat surface. The definition of the flat surface is the same as that described for the first spaced apart regions 1122 in the embodiment of fig. 3, and will not be repeated here.
The second spacing region 1112 has a spacing width W2 in a second extending direction E2 perpendicular to the light emitting surface 112a, and the light incident surface 111a has a light incident surface width W in the second extending direction E2. The width W of the light incident surface is, for example, 0.5mm to 2mm, and the width W2 of the space is, for example, 1/3 to 2/3 of the width W of the light incident surface, but not limited thereto. In one embodiment, the second spaced regions 1112 have a spacing width W2 of 0.25mm to 1 mm. The length a2 of the second spacer regions 1112 in the arrangement direction P parallel to the light incident surface 111a is, for example, the same as the length A3 of the light incident surface 111 a.
To sum up, the utility model discloses an among the light source module, a plurality of first microstructures of income plain noodles on the light guide plate are not adjacent to a plurality of second microstructures on play plain noodles, compare in the known art with prism column or microstructure be covered with the mode on the whole surface of going into plain noodles and play plain noodles in order to reduce the hot phenomenon, the utility model discloses a light source module when a plurality of light-emitting component sent light to the income plain noodles of light guide plate, except that a plurality of first microstructures of going into the plain noodles can reduce the hot phenomenon, make a plurality of first microstructures and a plurality of second microstructures be not adjacent can also reduce the phenomenon production of interference fringe.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the contents of the specification should be included in the scope of the present invention. Moreover, it is not necessary for any embodiment or claim of the invention to address all of the objects, 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 (10)
1. A light guide plate is characterized by comprising a light incident surface and a light emergent surface, wherein the light incident surface is connected with the light emergent surface, the light incident surface is provided with a plurality of first microstructures, the light emergent surface is provided with a plurality of second microstructures, and the plurality of first microstructures are not adjacent to the plurality of second microstructures.
2. The light guide plate of claim 1, wherein the first microstructures are disposed on the entire surface of the light incident surface, a first spacing region is disposed on a side of the light incident surface adjacent to the light emergent surface, and the first spacing region is a flat surface without the second microstructures.
3. The light guide plate according to claim 2, wherein the light incident surface and the light emitting surface are perpendicular to each other, the first spacing region has a width in a first extending direction perpendicular to the light incident surface of 3mm to 5mm, and a length in a direction parallel to the light incident surface of the first spacing region is the same as a length of the light emitting surface.
4. The light guide plate of claim 1, wherein the plurality of second microstructures are disposed on the entire surface of the light emitting surface, one side of the light incident surface adjacent to the light emitting surface has a second spacing region, and the second spacing region does not have the plurality of first microstructures and is a flat surface.
5. The light guide plate of claim 4, wherein the light incident surface and the light emitting surface are perpendicular to each other, the second spacing region has a spacing width in a second extending direction perpendicular to the light emitting surface, and the light incident surface has a light incident surface width in the second extending direction, wherein the spacing width is between 1/3 and 2/3 of the light incident surface width.
6. The light guide plate according to claim 5, wherein the interval width of the second interval region is 0.25mm to 1 mm.
7. The light guide plate of claim 1, wherein the second microstructures comprise prism columns, and the prism columns are arranged along an arrangement direction parallel to the light incident surface and extend along an extension direction perpendicular to the light incident surface.
8. The light guide plate of claim 1, wherein the plurality of first microstructures comprises prism columns or dots.
9. The light guide plate of claim 1, wherein the first microstructures are semi-circular prism columns and extend along a direction perpendicular to the light exit surface.
10. 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 a light emergent surface, the light incident surface is adjacent to the light emergent surface, the light incident surface is provided with a plurality of first microstructures, the light emergent surface is provided with a plurality of second microstructures, and the plurality of first microstructures are not adjacent to the plurality of second microstructures;
the light emitting elements are arranged beside the light incident surface and used for emitting light rays to the light incident surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796854.XU CN210514680U (en) | 2019-10-24 | 2019-10-24 | Light guide plate and light source module |
| TW108214445U TWM592982U (en) | 2019-10-24 | 2019-11-01 | Light guide plate and light source module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921796854.XU CN210514680U (en) | 2019-10-24 | 2019-10-24 | Light guide plate and light source module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210514680U true CN210514680U (en) | 2020-05-12 |
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ID=70573459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921796854.XU Active CN210514680U (en) | 2019-10-24 | 2019-10-24 | Light guide plate and light source module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN210514680U (en) |
| TW (1) | TWM592982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115220145A (en) * | 2022-08-22 | 2022-10-21 | 扬昕科技(苏州)有限公司 | Backlight module and light guide plate |
-
2019
- 2019-10-24 CN CN201921796854.XU patent/CN210514680U/en active Active
- 2019-11-01 TW TW108214445U patent/TWM592982U/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115220145A (en) * | 2022-08-22 | 2022-10-21 | 扬昕科技(苏州)有限公司 | Backlight module and light guide plate |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM592982U (en) | 2020-04-01 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210909 Address after: 215217 No. 808, pangjin Road, Wujiang Economic and Technological Development Zone, Suzhou, Jiangsu Patentee after: Suzhou canyao photoelectric Co.,Ltd. Address before: 215006, No. three, No. 68, Suzhou Industrial Park, Suzhou, Jiangsu, China Patentee before: CORETRONIC(SUZHOU)CO., Ltd. |