CN217157024U - Backlight module and electronic equipment - Google Patents
Backlight module and electronic equipment Download PDFInfo
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- CN217157024U CN217157024U CN202221247610.8U CN202221247610U CN217157024U CN 217157024 U CN217157024 U CN 217157024U CN 202221247610 U CN202221247610 U CN 202221247610U CN 217157024 U CN217157024 U CN 217157024U
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- energy receiving
- receiving part
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Abstract
The utility model provides a backlight module and electronic equipment, backlight unit includes support, board and diffuser plate in a poor light, the board in a poor light is towards a plurality of lamp pearl group of one side evenly distributed of diffuser plate, lamp pearl group includes the lamp pearl that a plurality of evenly arranged, a plurality of lamp pearl encloses to close and forms the support region, the support is located the support region, the support includes the base, light energy receiving part and supporting part, pedestal connection is on the board in a poor light, the one end connection base of light energy receiving part, the supporting part is connected to the other end of light energy receiving part, the one end butt diffuser plate one side towards the board in a poor light of light energy receiving part is kept away from to the supporting part, set up the micro-structure on the light energy receiving part. The microstructure is arranged on the light energy receiving part of the support, and the light source emitted to the light energy receiving part is subjected to diffuse reflection through the microstructure, so that the light source is reduced to directly enter the light energy receiving part, reflected and refracted light energy loss is generated, the shadow of the support is weakened, and the display effect of the backlight module is improved.
Description
Technical Field
The utility model relates to a liquid crystal display technology field, in particular to backlight module and electronic equipment.
Background
The liquid crystal display technology is applied to various electronic products such as notebook computers, mobile phones, digital cameras, televisions and the like, and the manufacturing technology of the liquid crystal panel is gradually born, so that the traditional display panel is gradually replaced by the advantages of light volume, clear picture and the like.
The liquid crystal panel does not emit light, and the image can be displayed only by the backlight source, and the direct type backlight module is often used as the backlight source of the liquid crystal panel. The backlight module is provided with a diffusion plate for diffusing the light source, and the diffusion plate is supported by arranging a support on the backlight plate to prevent the diffusion plate from being locally sunken.
However, the bracket reflects and absorbs part of the light energy of the LED, so that a bracket shadow is formed on the diffusion plate, and along with the design thinning of the backlight module, the use number multiple of the bracket of a single backlight is increased, and the shadow problem is more obvious.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a backlight unit and electronic equipment for among the solution prior art, because of support reflection and absorption part LED light energy, lead to forming the support shadow on the diffuser plate, influence backlight unit's display effect's technical problem.
The utility model provides a backlight module, including support, board and diffuser plate in a poor light, the board orientation in a poor light a plurality of lamp pearl group of one side evenly distributed of diffuser plate, lamp pearl group is including the lamp pearl that a plurality of evenly arranged, a plurality of the lamp pearl encloses to close and forms the support area, the support is located in the support area, the support includes base, light energy receiving part and supporting part, the pedestal connection in on the board in a poor light, the one end of light energy receiving part is connected the base, the other end of light energy receiving part is connected the supporting part, the supporting part is kept away from the one end butt of light energy receiving part the diffuser plate orientation the one side of board in a poor light, set up the micro-structure on the light energy receiving part, the micro-structure is used for reducing the light energy loss of light energy receiving part.
According to the backlight module, the microstructure is arranged on the light energy receiving part of the support, and the light source emitted to the light energy receiving part is subjected to diffuse reflection through the microstructure, so that the light source directly enters the light energy receiving part, reflected and refracted light energy loss is generated, the shadow of the support is weakened, and the display effect of the backlight module is improved.
Furthermore, the microstructure includes a plurality of protruding portions distributed in an array, the plurality of protruding portions are disposed around the light energy receiving portion, and the protruding portions are perpendicular to the light energy receiving portion.
Further, the cross-sectional area of the protruding portion gradually decreases from the end close to the light energy receiving portion to the end far away from the light energy receiving portion.
Further, the convex part is in a conical shape, a Gaussian curved surface shape, a parabolic shape or a step shape.
Further, it is adjacent interval between the bellying is less than 100um, the height of bellying is 200um ~ 390 um.
Further, the microstructure and the light energy receiving part are integrally formed.
Furthermore, the light energy receiving part is sleeved with an adhesive layer, and the microstructure is adhered to one surface of the adhesive layer, which is opposite to the light energy receiving part.
The utility model also provides an electronic equipment, including backlight unit, backlight unit is above-mentioned arbitrary one backlight unit.
Drawings
FIG. 1 is a schematic diagram of a bracket shadow in a conventional backlight module;
FIG. 2 is a cross-sectional view of a backlight module according to a first embodiment of the present invention;
FIG. 3 is a cross-sectional view of the stent of FIG. 2;
FIG. 4 is an enlarged view of the portion A of FIG. 3;
fig. 5 is a schematic view of a bracket of a backlight module according to a first embodiment of the present invention;
description of the main element symbols:
the following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a support frame in a conventional backlight module is generally injection molded by using a polymer material such as PC, PS, PMMA, etc., and is transparent or translucent, a refractive index N1 is approximately equal to 1.5, and compared with an air refractive index N ═ 1, the light energy I1 of a part of the LED reaches the support frame after being distributed by a lens, firstly, the refractive index of an incident interface "air → support frame" is suddenly changed, so that the light energy is refracted and simultaneously reflected, and a reflectivity R ═ ((N1-N)/(N1+ N))2 ═ 100% — (4%), i.e., R1 ═ I1 —; secondly, because the refractive index changes suddenly at the exit interface of the support frame → air, the light energy entering the inside of the support frame 20 can be refracted and reflected at the interface at the same time, and the reflectivity at the interface is R ((N1-N)/(N1+ N))2 ═ 100% ═ 4%, that is, R2 ═ 4% (I1-R1); thirdly, the support frame is a light-tight medium compared with air, the light energy is emitted from the support frame 20 to the air and has a total reflection phenomenon, the critical angle C of the reflection angle of the interface between the support frame and the air is approximately equal to 42 degrees (arcsin (1/N1), namely, the light energy with the incident angle larger than 42 degrees can not be emitted, and can be totally reflected in the support frame and absorbed by the support frame, and R3 is approximately equal to (180-42) 2)/180 (I1-R1) 100 percent. In summary, about 60% of the light energy cannot form effective light energy due to reflection and total reflection loss, I2 is approximately equal to I1 × 40%, and the light energy transmitted through the support 20 to the diffuser 30 is missing, and macroscopically appears as a shadow phenomenon projected by the support 20.
Referring to fig. 2 to 4, the backlight module according to the first embodiment of the present invention includes a support 20, a backlight plate 10 and a diffusion plate 30, wherein a plurality of lamp beads 40 are uniformly distributed on a surface of the backlight plate 10 facing the diffusion plate 30, and the plurality of lamp beads 40 are used for emitting light and diffused through the diffusion plate 30 to realize a display function of the display liquid crystal panel.
40 groups of lamp pearl include the lamp pearl 40 that a plurality of was evenly arranged, a plurality of lamp pearl 40 encloses to close and forms the support area, support 20 is located support the district, preferably, support 20 is located support the central point in district puts to realize the evenly distributed of strong point. The bracket 20 includes a base 210, a light energy receiving portion 220 and a supporting portion 230, the base 210 is connected to the backlight plate 10, one end of the light energy receiving portion 220 is connected to the base 210, the other end of the light energy receiving portion 220 is connected to the supporting portion 230, one end of the supporting portion 230, which is far away from the light energy receiving portion 220, abuts against one surface of the diffusion plate 30, which faces the backlight plate 10, and by arranging the base 210, the bracket 20 can be ensured to be perpendicular to the backlight plate 10 to a certain extent, so that the bracket 20 is prevented from being inclined, and the diffusion plate 30 is prevented from being supported incompletely.
The light energy receiving portion 220 is provided with a microstructure for reducing the light energy loss of the light energy receiving portion 220. The light source which is emitted to the light energy receiving part 220 is subjected to diffuse reflection through the microstructures, so that the light energy loss caused by reflection and refraction when the light source directly enters the light energy receiving part 220 is reduced, the shadow of the bracket 20 is weakened, and the display effect of the backlight module is improved.
Specifically, the microstructure and the light energy receiving portion 220 are integrally formed by precision injection molding using a mold, the microstructure includes a plurality of protruding portions 50 of array sections, the plurality of protruding portions 50 are arranged around the light energy receiving portion 220, and the protruding portions 50 are perpendicular to the light energy receiving portion 220. One end of the protruding portion 50 away from the light energy receiving portion 220 protrudes out of the outer sidewall of the light energy receiving portion 220. The convex portion 50 has a monotonous and gradual-changing surface structure, and preferably, the convex portion 50 is conical, gaussian curved, parabolic or stepped. It is understood that the cross-sectional area of the convex portion 50 gradually decreases from the end close to the light energy receiving portion 220 to the end far from the light energy receiving portion 220. Preferably, the interval between adjacent bellying 50 is less than 100um, bellying 50's height is 200um ~ 390 um.
Referring to fig. 5, light energy is emitted from an LED and distributed through a lens to reach the microstructures on the outer side wall of the holder 20, a propagation path of the light energy passes through S1, S2, S3, and S4. In summary, under the effect of the microstructure, the loss of light energy such as reflection and refraction generated on the outer surface and the inner part of the support 20 is very small. The light emitting efficiency of the backlight module can be improved by about 60%, the brightness is improved, the occurrence of shadows of the bracket 20 is avoided, the production cost is reduced, and the production benefit is improved.
A locking mechanism 60 is disposed on a surface of the base 210 facing away from the light energy receiving portion 220, the locking mechanism 60 is configured to fix the base 210 to the backlight board 10, preferably, the locking mechanism 60 includes a first elastic bending arm 610 and a second elastic bending arm 620, the first elastic bending arm 610 and the second elastic bending arm 620 are disposed opposite to each other, a fixing hole is formed in the backlight board 10, when the base 210 is disposed on the backlight board 10, the first elastic bending arm 610 and the second elastic bending arm 620 penetrate through the fixing hole and protrude out of the backlight board 10, and at this time, the first elastic bending arm 610 and the second elastic bending arm 620 are bent to fix the support 20 to the backlight board 10.
The utility model discloses backlight unit in second embodiment, it is the same basically with backlight unit in the first embodiment, and its difference lies in, light energy receiving part 220 overcoat is equipped with the viscose layer, the micro-structure adhere in the viscose layer dorsad the one side of light energy receiving part 220, preferably, the viscose layer is supported by photosensitive adhesive, imprints through accurate module the micro-structure, synchronous UV photocuring shaping.
The utility model also provides an electronic equipment, backlight unit among the above-mentioned technical scheme.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. The utility model provides a backlight module, includes support, board and diffuser plate in a poor light, its characterized in that, the board in a poor light orientation a plurality of lamp pearl group of one side evenly distributed of diffuser plate, lamp pearl group is including the lamp pearl of a plurality of evenly arranging, a plurality of the lamp pearl encloses to close and forms the support area, the support is located in the support area, the support includes base, light energy receiving part and supporting part, the pedestal connection in on the board in a poor light, the one end of light energy receiving part is connected the base, the other end of light energy receiving part is connected the supporting part, the supporting part is kept away from the one end butt of light energy receiving part the diffuser plate orientation the one side of board in a poor light, set up the microstructure on the light energy receiving part, the microstructure is used for reducing the light energy loss of light energy receiving part.
2. The backlight module as claimed in claim 1, wherein the micro-structure comprises a plurality of protrusions distributed in an array, the plurality of protrusions are disposed around the light energy receiving portion, and the protrusions are perpendicular to the light energy receiving portion.
3. The backlight module according to claim 2, wherein the cross-sectional area of the protrusion gradually decreases from the end close to the light energy receiving portion to the end far from the light energy receiving portion.
4. The backlight module as claimed in claim 3, wherein the protrusions are tapered, Gaussian-shaped, parabolic or stepped.
5. The backlight module according to claim 2, wherein the distance between the adjacent protrusions is less than 100um, and the height of the protrusions is 200um to 390 um.
6. The backlight module as claimed in claim 1, wherein the microstructures are integrally formed with the light energy receiving part.
7. The backlight module as claimed in claim 1, wherein the light energy receiving portion is covered with an adhesive layer, and the microstructures are adhered to a surface of the adhesive layer opposite to the light energy receiving portion.
8. An electronic device comprising the backlight module according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221247610.8U CN217157024U (en) | 2022-05-20 | 2022-05-20 | Backlight module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221247610.8U CN217157024U (en) | 2022-05-20 | 2022-05-20 | Backlight module and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217157024U true CN217157024U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221247610.8U Active CN217157024U (en) | 2022-05-20 | 2022-05-20 | Backlight module and electronic equipment |
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| CN (1) | CN217157024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116540451A (en) * | 2023-05-24 | 2023-08-04 | 长沙惠科光电有限公司 | Backlight module, manufacturing method and display device |
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2022
- 2022-05-20 CN CN202221247610.8U patent/CN217157024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116540451A (en) * | 2023-05-24 | 2023-08-04 | 长沙惠科光电有限公司 | Backlight module, manufacturing method and display device |
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