CN209979974U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN209979974U CN209979974U CN201920783069.4U CN201920783069U CN209979974U CN 209979974 U CN209979974 U CN 209979974U CN 201920783069 U CN201920783069 U CN 201920783069U CN 209979974 U CN209979974 U CN 209979974U
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- light guide
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- guide plate
- backlight
- backlight module
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Abstract
The utility model discloses a backlight source module and a display device, wherein the backlight source module comprises a light guide plate and a light source, and the light source is arranged at the short side of the light guide plate; the light emitting surface of the light guide plate is provided with a plurality of first light guide grains, the first light guide grains are arranged side by side on the light emitting surface of the light guide plate, and two adjacent rows of first light guide grains are close to the light source and far away from the space between one ends of the light source from large to small. The backlight lamp has the advantages that backlight uniformity is realized by adjusting backlight structural design change and reasonable process under the condition of using one LED lamp, the using number of LEDs is reduced, the production cost is reduced, the packaging heat dissipation performance is good, the temperature stability of a product illuminated for a long time is realized, the service life of the product is prolonged, and the process is simpler; by dividing the backlight into two independent parts, the repair cost is reduced, the damage reuse of parts is realized, the limitation of the use environment is improved by the independent parts, and the backlight can be designed according to different ID requirements.
Description
Technical Field
The utility model belongs to the technical field of backlight technology and specifically relates to a backlight module and display device.
Background
With the development of backlight technology, backlights are also widely used in various fields. Increasing the backlight area needs to be realized by continuously increasing the number of LED lamps at present, the backlight cost is relatively high, under the large trend that the cost continuously rises, competition is more and more without advantages, large-area uniform backlight cannot be realized by the mode, and the process is relatively complex.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned prior art not enough, an object of the present invention is to provide a backlight module and a display device to solve the problem that increasing the backlight area needs to be realized by increasing the number of LED lamps, the backlight cost is high, and the backlight that this method leads to is uneven, the process is relatively complicated.
The technical scheme of the utility model as follows: a backlight source module comprises a light guide plate and a light source, wherein the light source is arranged on the short side of the light guide plate; the light emitting surface of the light guide plate is provided with a plurality of first light guide grains, the first light guide grains are arranged side by side on the light emitting surface of the light guide plate, and the distance between every two adjacent rows of the first light guide grains from the light source to the end far away from the light source is gradually reduced.
The utility model discloses a further setting, the play plain noodles of light guide plate is a first inclined plane, first inclined plane has a contained angle beta with the horizontal plane.
The utility model discloses a further setting, the integrative installation department that is provided with of short avris of light guide plate, the installation department is provided with and is used for the holding chamber of light source, just the holding chamber sets up the intermediate position of installation department.
The utility model discloses a further setting, the up end of installation department is the second inclined plane, the second inclined plane has a contained angle alpha with the horizontal plane.
The utility model discloses a further setting, the second inclined plane is provided with second leaded light line side by side, and adjacent two rows interval between the second leaded light line is the same.
The utility model discloses a further setting, first leaded light line with second leaded light line is the leaded light line that comprises a plurality of leaded light point and is the inline.
The utility model discloses a further setting, a plurality of leaded light point is hemispherical leaded light point, and the diameter size of a plurality of leaded light point is the same.
The utility model discloses a further setting, the both sides face of installation department sets up to third inclined plane and fourth inclined plane respectively, third inclined plane and fourth inclined plane symmetry set up.
The utility model discloses a further setting, the shady face of light guide plate is provided with white printing ink layer.
A display device comprises a PCB (printed circuit board), an LCD (liquid crystal display) and the backlight source module, wherein the backlight source module comprises a light guide plate and a light source, the light guide plate is arranged on the PCB, and the LCD is arranged on the light guide plate; and the PCB is provided with a conductive plate for connecting the light guide plate and the LCD.
The utility model provides a backlight module and display device has following beneficial effect:
1. according to the size of the backlight area, the backlight uniformity is achieved by adjusting the design change and the reasonable process of the backlight structure under the condition of using one LED, and the production cost is reduced;
2. the backlight source is divided into two independent parts, namely the light guide plate and the LEDs are independently arranged, so that the independence of parts is kept, the repair cost is reduced, the parts are damaged and reused, and the environment-friendly effect is realized;
3. the use number of LEDs is reduced, the packaging heat dissipation performance is good, the temperature stability of a product illuminated for a long time is realized, the service life of the product is prolonged, and the process is relatively simple;
4. the independent parts increase the limitation of the use environment, and the backlight can be designed according to different ID requirements.
Drawings
Fig. 1 is a schematic view of the overall structure of the middle backlight module of the present invention.
Fig. 2 is a top view of the backlight module of the present invention.
Fig. 3 is a side view of the backlight module of the present invention.
Fig. 4 is a light path diagram of the middle backlight module of the present invention.
Fig. 5 is a partial view of the backlight module of the present invention.
Fig. 6 is a schematic view of the overall structure of the display device of the present invention 1.
Fig. 7 is a schematic view of the overall structure of the display device according to the present invention 2.
The various symbols in the drawings: 100. a backlight source module; 101. a light guide plate; 102. a light source; 103. an installation part; 104. a first light guide pattern; 105. a second light guide pattern; 106. a light guide point; 107. a first inclined surface; 108. a second inclined surface; 109. a third inclined surface; 110. a fourth inclined surface; 111. a white ink layer; 200. a display device; 201. an LCD display; 202. a PCB board; 203. and a conductive plate.
Detailed Description
The utility model provides a backlight module and display device, it is applied to instrument and meter, among the domestic appliance, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and it is right that the following refers to the drawing and lifts the example the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the terms "a" and "an" can mean "one or more" unless the article is specifically limited.
A backlight module, as shown in FIG. 1, comprises a light guide plate 101 and a light source 102, wherein the light source 102 is disposed at a short side of the light guide plate 101; the light emitting surface of the light guide plate 101 is provided with a plurality of first light guide grains 104, the first light guide grains 104 are arranged on the light emitting surface of the light guide plate 101 side by side, and the distance between two adjacent rows of the first light guide grains 104 from the light source 102 to the end far away from the light source 102 is gradually reduced.
Wherein, the number of the first light guiding lines 104 is specifically set according to the area of the light emitting surface, specifically, the first light guiding lines 104 are light guiding lines which are composed of a plurality of light guiding points 106 and are in a straight line shape, more specifically, the light source 102 in the utility model is an LED lamp, and is installed on the short side of the light guide plate 101, the light guide points 106 are hemispherical light guide points 106, and the diameters of the light guide points 106 are the same, the light guide points 106 make the light-emitting surface of the light guide plate 101 rough, and the light guide plate 101 can increase the reflection and diffuse reflection of light on the light-emitting surface, therefore, when the first light guiding ridges 104 have different distances from the end close to the light source 102 to the end far away from the light source 102, that is, the light guiding ridges on the light emitting surface have different distances from each other, that is, the densities of the light guide points 106 are different, so that the densities of the reflection and the diffuse reflection of the light on the light emitting surface can be adjusted by the density of the light guide points 106. Since the farther from the light source 102, the less the light emitted from the light emitting surface, the density of the light guiding points 106 on the light emitting surface is adjusted to adjust the reflection and diffuse reflection of the light on the light emitting surface, so as to achieve the purpose of uniform backlight.
The utility model provides a pair of backlight module, through setting up the LED lamp in light guide plate 101 one side, can increase the backlight area under the condition that uses an LED lamp, through the use quantity that reduces LED, make backlight encapsulation thermal diffusivity better, the stability of long-time illumination product temperature has been realized, product life has been increased, and the technology is comparatively simple, the production efficiency is improved, and set up a plurality of interval first leaded light lines 104 that are inconsistent in size through the play plain noodles at light guide plate 101, in order to realize the even mesh in a poor light.
Further, referring to fig. 1, an installation portion 103 is integrally disposed on a short side of the light guide plate 101, the installation portion 103 is provided with an accommodation cavity for accommodating the light source 102, and the accommodation cavity is disposed in a middle position of the installation portion 103. Specifically, the light source 102 is an LED lamp, and light emitted from the LED lamp is emitted in a direction away from the mounting portion 103.
Preferably, referring to fig. 1 and 3, the upper end surface of the mounting portion 103 is a second inclined surface 108, and the second inclined surface 108 forms an included angle α with a horizontal plane. Specifically, light emitted by the LED lamp is reflected by the second inclined plane and then exits the light exit surface of the light guide plate 101, wherein an included angle α between the second inclined plane 108 and the horizontal plane is 25 ° to 70 °, preferably, α is 45 °.
Further, referring to fig. 1, fig. 2, fig. 4 and fig. 5, the second inclined surface 108 is provided with second light guide lines side by side, and the distances between two adjacent rows of the second light guide lines 105 are the same. Specifically, the light emitted by the LED lamp is partially directly emitted into the light emitting surface of the light guide plate 101, and is partially emitted out through the light emitting surface after being reflected by the second inclined surface 108, and the second light guide lines 105 are disposed on the second inclined surface 108, and the second light guide lines 105 disposed on the second inclined surface 108 are uniformly disposed, that is, the light guide points 106 are uniformly disposed, so that the reflection of the light on the second inclined surface 108 is increased by the light guide points 106 on the second inclined surface 108.
Preferably, referring to fig. 1, both side surfaces of the mounting portion 103 are respectively provided with a third inclined surface 109 and a fourth inclined surface 110, and the third inclined surface 109 and the fourth inclined surface 110 are symmetrically arranged. The LED lamp is disposed in the middle of the mounting portion 103 to make light be emitted directly or reflected to the light emitting surface.
Preferably, referring to fig. 1 and fig. 3, the light emitting surface of the light guide plate 101 is a first inclined surface 107, the first inclined surface 107 forms an included angle β with the horizontal plane, and the light emitting surface is inclined to enhance the reflection of light, wherein the included angle β between the first inclined surface 107 and the horizontal plane is set to 10 ° -30 °, and preferably 20 °.
Preferably, referring to fig. 5, a white ink layer 111 is disposed on a backlight surface of the light guide plate 101, and the white ink layer is beneficial to increasing brightness.
The utility model also provides a display device 200, as shown in FIG. 6, this display device 200 includes PCB board 202 and LCD display 201, still includes foretell backlight 102 module 100.
Referring to fig. 6 in combination with fig. 7, the backlight module 100 includes a light guide plate 101 and a light source 102, and a conductive plate 203 for connecting the light guide plate 101 and the LCD display 201 is disposed on the PCB 202. Specifically, the light source 102 is an LED lamp, and the LED lamp and the light guide plate 101 are designed independently, the light guide plate 101 and the LED lamp are disposed on the PCB 202, the LCD display 201 is disposed on the light guide plate 101, and the LCD display 201 and the light guide plate 101 are also independently disposed by dividing the backlight into two independent parts. Because of the independence of the parts, the temperature of the product is stable for a long time, the service life of the product is prolonged, the repair cost is reduced, the parts are damaged and reused, and the LED lamp is beneficial to environmental protection. In addition, the independent parts raise the limitation of the use environment, and the backlight can be designed according to different ID requirements (industrial design requirements).
To sum up, the utility model provides a backlight module and display device, through setting up the LED lamp in light guide plate 101 one side, can increase the backlight area under the condition of using a LED lamp, through reducing the use quantity of LED, make backlight encapsulation thermal diffusivity better, realized the stability of long-time illumination product temperature, increased product life, and the technology is comparatively simple, improved production efficiency, and through setting up the first leaded light line 104 that a plurality of intervals size are inconsistent at the play plain noodles of light guide plate 101, in order to realize the even mesh in a poor light, reduced manufacturing cost; the backlight source 102 is divided into two independent parts, namely the light guide plate 101 and the LEDs are independently arranged, so that the independence of parts is kept, the repair cost is reduced, the parts are damaged and reused, and the environment is protected; in addition, the independent parts increase the limitation of the use environment, and the backlight can be designed according to different ID requirements.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to fall within the scope of the appended claims.
Claims (10)
1. A backlight module comprises a light guide plate and a light source, and is characterized in that the light source is arranged at the short side of the light guide plate; the light emitting surface of the light guide plate is provided with a plurality of first light guide grains, the first light guide grains are arranged side by side on the light emitting surface of the light guide plate, and the distance between every two adjacent rows of the first light guide grains from the light source to the end far away from the light source is gradually reduced.
2. The backlight module as claimed in claim 1, wherein the light-emitting surface of the light guide plate is a first inclined surface, and an included angle β is formed between the first inclined surface and the horizontal plane.
3. The backlight module of claim 2, wherein an installation portion is integrally formed at the short side of the light guide plate, the installation portion is provided with a receiving cavity for receiving the light source, and the receiving cavity is disposed at a middle position of the installation portion.
4. The backlight module of claim 3, wherein the upper surface of the mounting portion is a second inclined surface, and the second inclined surface forms an included angle α with the horizontal plane.
5. The backlight module of claim 4, wherein the second inclined surface is provided with second light guide patterns side by side, and the distance between two adjacent rows of the second light guide patterns is the same.
6. The backlight module of claim 5, wherein the first light guide lines and the second light guide lines are linear light guide lines composed of a plurality of light guide points.
7. The backlight module of claim 6, wherein the light guide points are hemispherical light guide points, and the diameters of the light guide points are the same.
8. The backlight module of claim 3, wherein two sides of the mounting portion are respectively provided with a third inclined surface and a fourth inclined surface, and the third inclined surface and the fourth inclined surface are symmetrically arranged.
9. The backlight module of claim 1, wherein the backlight surface of the light guide plate is provided with a white ink layer.
10. A display device comprising a PCB and an LCD, further comprising the backlight module of any one of claims 1 to 9, wherein the backlight module comprises a light guide plate and a light source, the light guide plate is disposed on the PCB, and the LCD is disposed on the light guide plate; and the PCB is provided with a conductive plate for connecting the light guide plate and the LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920783069.4U CN209979974U (en) | 2019-05-28 | 2019-05-28 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920783069.4U CN209979974U (en) | 2019-05-28 | 2019-05-28 | Backlight module and display device |
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| Publication Number | Publication Date |
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| CN209979974U true CN209979974U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920783069.4U Active CN209979974U (en) | 2019-05-28 | 2019-05-28 | Backlight module and display device |
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| CN (1) | CN209979974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116559994A (en) * | 2023-05-31 | 2023-08-08 | 青岛鼎信通讯股份有限公司 | Backlight module and electric energy meter |
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2019
- 2019-05-28 CN CN201920783069.4U patent/CN209979974U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116559994A (en) * | 2023-05-31 | 2023-08-08 | 青岛鼎信通讯股份有限公司 | Backlight module and electric energy meter |
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