CN202647428U - Laterally-entering type backlight module and display unit - Google Patents
Laterally-entering type backlight module and display unit Download PDFInfo
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- CN202647428U CN202647428U CN 201220268514 CN201220268514U CN202647428U CN 202647428 U CN202647428 U CN 202647428U CN 201220268514 CN201220268514 CN 201220268514 CN 201220268514 U CN201220268514 U CN 201220268514U CN 202647428 U CN202647428 U CN 202647428U
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Abstract
The utility model relates to a laterally-entering type backlight module and a display unit. The laterally-entering type backlight module comprises a back plate, a light guide plate, a reflector sheet, a light source and a circuit board, wherein the reflector sheet is arranged between the back plate and the light guide plate, and the light source is arranged on the circuit board. The back plate comprises a bottle plate and a side plate, wherein a groove containing the light source and the circuit board is formed on the bottle plate and close to the side plate, the circuit board is arranged in the groove, and the light guide plate and the reflector sheet extend to the groove. The light guide plate is provided with a light-entering surface which is right opposite to the light source. According to the laterally-entering type backlight module and the display unit, the groove containing the light source and the circuit board is arranged on the back plate, the circuit board is arranged in the groove, the light guide plate extends to the groove, the light source is right opposite to the light-entering surface of the light guide plate, and therefore a luminous surface of the light source and a travel distance of light in a visible area are enlarged, a light-blending distance is enlarged, a light-blending effect is improved, and the probability of occurrence of firefly phenomena is reduced.
Description
Technical field
The utility model relates to backlight module, particularly relates to a kind of side entrance back module and display unit.
Background technology
Liquid crystal display has the advantages such as low voltage operating, radiationless line scattering, lightweight and volume be little, and it receives people's concern.Liquid crystal display is comprised of liquid crystal panel and backlight module, and liquid crystal molecule self is not luminous in the liquid crystal panel, needs backlight module to provide backlight.Direct-type backlight and the side entrance back of being divided into backlight that backlight module provides.Direct-type backlight refers to single light source evenly is arranged in the positive back of liquid crystal board according to certain spacing, and the light that spot light sends can obtain required area source via the diffusion sheet diffusion; Side entrance back refers to assemble on the backlight module line source or lower side, adopt wedge shape or plate LGP add reflector plate can with line source through superrefraction, be reflected into area source.
In traditional side entrance back module, use the luminous LED in top, LED is fixed on the circuit board, again circuit board is fixed on the backboard sidewall.See also Fig. 1, Fig. 1 is the side schematic view of traditional side entrance back module.As shown in Figure 1, LED13 is fixed on the circuit board 12, circuit board 12 is fixed on the sidewall of backboard 11, LED13 bright dipping place is facing to the incidence surface of LGP 14, reflector plate 15 is arranged on the backboard 11 and is carrying LGP 14, and the light that LED13 sends reflexed on the LGP 14, dotted line is visible area border 16 among the figure.
Because the parameter that affects light mixing effect has LED to the distance (being the A value) on border, picture visual district 16, the spacing of LED and LED (being pitch, the P value), and it is fine or not that the ratio of A/P is weighed light mixing effect as a parameter, the ratio of A/P is less than 0.8, and then light mixing effect is poor.Along with the minimizing of LED usage quantity, and the designing requirement of super narrow frame, structural design as shown in Figure 1 can make the P value increase, and the ratio of A/P reduces, and the light mixing effect of LED13 is poor, causes occurring Hotspot(firefly picture) phenomenon.
The utility model content
Based on this, be necessary to provide a kind of and can improve light mixing effect, reduce the side entrance back module that firefly phenomenon probability occurs.
A kind of side entrance back module, comprise backboard, LGP, reflector plate, light source and circuit board, described reflector plate is arranged between described backboard and the described LGP, described light source is arranged on the described circuit board, described backboard comprises base plate and side plate, the groove that holds described light source and described circuit board at described base plate near described side plate place formation one, described circuit board is arranged in the described groove, described LGP and described reflector plate extend to described groove, described LGP has an incidence surface, described incidence surface and described light source over against.
Among embodiment, described circuit board is arranged on the bottom surface of described groove therein.
Among embodiment, described circuit board is arranged on the madial wall relative with described side plate of described groove therein.
Among embodiment, described LGP and reflector plate extend to described groove and bending is stretched in the described groove therein.
Among embodiment, described LGP has an exiting surface therein, and described exiting surface is in the side away from described reflector plate of described LGP, is provided with one deck reflecting material at the exiting surface of an end of the close described light source of described LGP.
Among embodiment, described reflecting material is bending structure therein, and the bending of described bending structure and described LGP is suitable.
Among embodiment, also comprise heat-conducting glue therein, described heat-conducting glue is arranged between the bottom surface of described circuit board and described groove.
Among embodiment, also comprise heat-conducting glue therein, described heat-conducting glue is arranged between the madial wall of described circuit board and described groove.
Among embodiment, described LGP has an exiting surface therein, and described exiting surface is in the side away from described reflector plate of described LGP.
In addition, also be necessary to provide and improve light mixing effect, reduce the display unit that firefly phenomenon probability occurs.
A kind of display unit comprises liquid crystal panel and backlight module, and described backlight module is arranged on the back side of described liquid crystal panel, and described backlight module adopts above-described side entrance back module.
Above-mentioned side entrance back module and display unit, the groove that holds light source and circuit board is established in employing at backboard, circuit board is arranged in the groove, and LGP has been extended to groove, with the incidence surface of light source and LGP over against, increased the stroke distances of the light of the light-emitting area of light source and visible area, thereby increased light mixing distance, improve light mixing effect, reduced the probability that the firefly phenomenon occurs.
Description of drawings
Fig. 1 is the side schematic view of traditional side entrance back module;
Fig. 2 is the side schematic view of the first embodiment of the utility model side entrance back module;
Fig. 3 is the side schematic view of the second embodiment of the utility model side entrance back module;
Fig. 4 is the side schematic view of the 3rd embodiment of the utility model side entrance back module.
The specific embodiment
Be described in detail below in conjunction with specific embodiment and the accompanying drawing structure to the side entering type backlight module, so that it is clearer.
See also Fig. 2, the side schematic view of the first embodiment of the utility model side entrance back module.As shown in Figure 2, side entrance back module 20 comprises backboard 21, LGP 22, reflector plate 23, light source 24, circuit board 25 and heat-conducting glue 26.Wherein, reflector plate 23 is arranged between backboard 21 and the LGP 22, and light source 24 is arranged on the circuit board 25.
LGP 22 and reflector plate 23 extend to groove 210 tops, and LGP 22 has an incidence surface 221 and an exiting surface 223, the incidence surface of LGP 22 221 and light source 24 over against, the side surface away from reflector plate 23 of LGP 22 is exiting surface 223.The exiting surface 223 of LGP 22 is in the side away from reflector plate 23 of LGP 22.
Heat-conducting glue 26 is arranged between the bottom surface 211 of circuit board 25 and groove 210, is used for the heat that the light source 24 on the circuit board 25 produces is transmitted to backboard 21, then is dispersed into the outside.
The light that light source 24 sends in the above-mentioned side entrance back module enters the incidence surface 221 of LGP 22, and part light enters LGP 22 after reflecting by reflector plate 23, and then the exiting surface 223 through LGP 22 penetrates.
Side entrance back module among Fig. 2 is compared with the side entrance back module among Fig. 1, because having saved on LGP 22 sustained heights, the space that circuit board 25 is shared, simultaneously LGP 22 is extended to groove 210 tops, increased the light-emitting area of light source 24 to the stroke distances of the light on visible area border 27, increased light mixing distance, so that the light mixing distance of light source 24 is finished, avoided the Hotspot(firefly outside visible area) generation of phenomenon.
Fig. 3 is the side schematic view of the second embodiment of the utility model side entrance back module.This side entrance back module 30 comprises backboard 31, LGP 32, reflector plate 33, light source 34, circuit board 35, heat-conducting glue 36 and emission material 37.Wherein: reflector plate 33 is arranged between backboard 31 and the LGP 32, and light source 34 is arranged on the circuit board 35.Backboard 31 comprises base plate and side plate, holds the groove 310 of light source 34 and circuit board 35 near described side plate place formation one at described base plate.The side plate of backboard 31 consists of a lateral wall of groove 310.
LGP 32 and reflector plate 33 bend at groove 310 places and stretch in the groove 310, LGP 32 has an incidence surface 321 and exiting surface 323, the incidence surface 321 of LGP 32 and light source 34 over against, the exiting surface 323 of LGP 32 is located at the side away from reflector plate 33 of LGP 32.
Reflector plate 33 arranges between backboard 31 and the LGP 32, so that the light reflection that light source 34 is sent enters in the LGP 32.
Light source 34 is the LED lamp, and light source 34 is installed on the circuit board 35, so that light to be provided.Light source 34 adopts the side-emitting LED lamp.
Circuit board 35 is arranged on the madial wall 311 of groove 310, because light source 34 is arranged on the circuit board 35, so that light source 34 faces the incidence surface 321 of LGP 32 bendings.Wherein, the madial wall 311 of backboard 31 forms groove 310 with the side plate of backboard 31, and the madial wall 311 of backboard 31 is the madial wall 311 of groove 310.
Heat-conducting glue 36 is arranged between the madial wall 311 of circuit board 35 and groove 310.
Exiting surface 323 at an end of the close light source 34 of LGP 32 is provided with one deck reflecting material 37, and the light that reflecting material 37 sends light source 34 reflexes to equably transmission in the LGP 32.
Because LGP 32 is bending structure, reflecting material 37 is suitable with LGP 32 shapes, also is bending structure, and the convenient light that light source 34 is sent reflexes in the LGP 32.In the present embodiment, the angle of the bending structure of LGP 32 is the obtuse angle, and then the angle of the bending structure of reflecting material 37 also is the obtuse angle.
Side entrance back module among Fig. 3 is compared with the side entrance back module among Fig. 1, circuit board 35 is arranged on the madial wall 311 of groove 310, with LGP 32 extend to groove 310 tops and the bending extend in the groove 310, increased the light-emitting area of light source 34 to the stroke distances of the light on visible area border 38, be stroke distance A 3 for A31 and A32 with, A31 is that light source 34 is to the distance of inflection point, A32 is the distance that visible area border 38 is arrived in the inflection point, increased light mixing distance, so that the light mixing distance of light source 34 is finished, avoided the generation of Hotspot phenomenon outside visible area.
Fig. 4 is the side schematic view of the 3rd embodiment of the utility model side entrance back module.This side entrance back module 40 comprises backboard 41, LGP 42, reflector plate 43, light source 44, circuit board 45, heat-conducting glue 46 and emission material 47.Wherein: reflector plate 43 is arranged between backboard 41 and the LGP 42, and light source 44 is arranged on the circuit board 45.Backboard 41 comprises base plate and side plate, holds the groove 410 of light source 44 and circuit board 45 near described side plate place formation one at described base plate.The side plate of backboard 41 consists of a lateral wall of groove 410.
LGP 42 and reflector plate 43 bend at groove 410 places and stretch in the groove 410, LGP 42 has an incidence surface 421 and exiting surface 423, the incidence surface 421 of LGP 42 and light source 44 over against, the exiting surface 423 of LGP 42 is located at the side away from reflector plate 33 of LGP 42.
Reflector plate 43 arranges between backboard 41 and the LGP 42, so that the light reflection that light source 44 is sent enters in the LGP 42.
Light source 44 is the LED lamp, and light source 44 is installed on the circuit board 45, so that light to be provided.Light source 44 adopts the top light emitting LED lamp.
Circuit board 45 is arranged on the bottom surface 411 of groove 410, because light source 44 is arranged on the circuit board 45, so that light source 44 faces the incidence surface 421 of LGP 42 bendings.
Heat-conducting glue 46 is arranged between the bottom surface 411 of circuit board 45 and groove 410.
Exiting surface 423 at an end of the close light source 44 of LGP 42 is provided with one deck reflecting material 47, and the light that reflecting material 47 sends light source 44 reflexes to equably transmission in the LGP 42.
Because LGP 42 is bending structure, reflecting material 47 is suitable with LGP 42 shapes, also is bending structure, and the convenient light that light source 44 is sent reflexes in the LGP 42.In the present embodiment, the angle of the bending structure of LGP 42 is the right angle, and then the angle of the bending structure of reflecting material 37 also is the right angle.
Side entrance back module among Fig. 4 is compared with the side entrance back module among Fig. 1, circuit board 45 is arranged on the bottom surface 411 of groove 410, with LGP 42 extend to groove 410 tops and the bending extend in the groove 410, increased the light-emitting area of light source 44 to the stroke distances of the light on visible area border 48, be stroke distance A 4 for A41 and A42 with, A41 is that light source 44 is to the distance of bending place mid point, A42 is that the bending place mid point is to the distance on visible area border 48, increased light mixing distance, so that the light mixing distance of light source 44 is finished, avoided the generation of Hotspot phenomenon outside visible area.
In addition, also provide a kind of display unit, this display unit comprises liquid crystal panel and is arranged on the backlight module at the back side of liquid crystal panel that this backlight module adopts above-mentioned side entrance back module.The concrete structure of side entrance back module does not repeat them here as described in the first embodiment, the second embodiment and the 3rd embodiment.
Above-mentioned side entrance back module and display unit, the groove that holds light source and circuit board is established in employing at backboard, circuit board is arranged in the groove, and LGP has been extended to groove, with the incidence surface of light source and LGP over against, increased the stroke distances of the light of the light-emitting area of light source and visible area, increased light mixing distance, improve light mixing effect, reduced the probability that the firefly phenomenon occurs.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. side entrance back module, it is characterized in that, comprise backboard, LGP, reflector plate, light source and circuit board, described reflector plate is arranged between described backboard and the described LGP, described light source is arranged on the described circuit board, described backboard comprises base plate and side plate, the groove that holds described light source and described circuit board at described base plate near described side plate place formation one, described circuit board is arranged in the described groove, described LGP and described reflector plate extend to described groove, described LGP has an incidence surface, described incidence surface and described light source over against.
2. side entrance back module according to claim 1 is characterized in that, described circuit board is arranged on the bottom surface of described groove.
3. side entrance back module according to claim 1 is characterized in that, described circuit board is arranged on the madial wall relative with described side plate of described groove.
4. according to claim 2 or 3 described side entrance back modules, it is characterized in that described LGP and described reflector plate extend to described groove and bending is stretched in the described groove.
5. side entrance back module according to claim 4, it is characterized in that, described LGP has an exiting surface, and described exiting surface is in the side away from described reflector plate of described LGP, is provided with one deck reflecting material at the exiting surface of an end of the close described light source of described LGP.
6. side entrance back module according to claim 5 is characterized in that, described reflecting material is bending structure, and the bending of described bending structure and described LGP is suitable.
7. side entrance back module according to claim 2 is characterized in that, also comprises heat-conducting glue, and described heat-conducting glue is arranged between the bottom surface of described circuit board and described groove.
8. side entrance back module according to claim 3 is characterized in that, also comprises heat-conducting glue, and described heat-conducting glue is arranged between the madial wall of described circuit board and described groove.
9. side entrance back module according to claim 1 is characterized in that, described LGP has an exiting surface, and described exiting surface is in the side away from described reflector plate of described LGP.
10. a display unit comprises liquid crystal panel and backlight module, and described backlight module is arranged on the back side of described liquid crystal panel, it is characterized in that, described backlight module adopts each described side entrance back module in the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268514 CN202647428U (en) | 2012-06-07 | 2012-06-07 | Laterally-entering type backlight module and display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268514 CN202647428U (en) | 2012-06-07 | 2012-06-07 | Laterally-entering type backlight module and display unit |
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| Publication Number | Publication Date |
|---|---|
| CN202647428U true CN202647428U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220268514 Expired - Fee Related CN202647428U (en) | 2012-06-07 | 2012-06-07 | Laterally-entering type backlight module and display unit |
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| CN (1) | CN202647428U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076965A (en) * | 2013-03-28 | 2014-10-01 | 联胜（中国）科技有限公司 | Touch display device |
| CN108181681A (en) * | 2018-01-03 | 2018-06-19 | 京东方科技集团股份有限公司 | A kind of backlight module and preparation method thereof, display device |
| CN110095906A (en) * | 2019-05-31 | 2019-08-06 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN110174723A (en) * | 2019-04-29 | 2019-08-27 | 厦门天马微电子有限公司 | Display module and display device |
| CN110501848A (en) * | 2018-05-18 | 2019-11-26 | 胜利仕科技股份有限公司 | Liquid crystal display device |
| CN111190249A (en) * | 2020-02-26 | 2020-05-22 | Oppo广东移动通信有限公司 | Backlight module and electronic equipment thereof |
| CN114397780A (en) * | 2021-12-20 | 2022-04-26 | 惠州视维新技术有限公司 | Backlight module and display device |
-
2012
- 2012-06-07 CN CN 201220268514 patent/CN202647428U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076965A (en) * | 2013-03-28 | 2014-10-01 | 联胜（中国）科技有限公司 | Touch display device |
| CN108181681A (en) * | 2018-01-03 | 2018-06-19 | 京东方科技集团股份有限公司 | A kind of backlight module and preparation method thereof, display device |
| CN110501848A (en) * | 2018-05-18 | 2019-11-26 | 胜利仕科技股份有限公司 | Liquid crystal display device |
| CN110174723A (en) * | 2019-04-29 | 2019-08-27 | 厦门天马微电子有限公司 | Display module and display device |
| CN110174723B (en) * | 2019-04-29 | 2020-05-15 | 厦门天马微电子有限公司 | Display module and display device |
| CN110095906A (en) * | 2019-05-31 | 2019-08-06 | 厦门天马微电子有限公司 | A kind of backlight module and display device |
| CN110095906B (en) * | 2019-05-31 | 2021-10-08 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN111190249A (en) * | 2020-02-26 | 2020-05-22 | Oppo广东移动通信有限公司 | Backlight module and electronic equipment thereof |
| CN114397780A (en) * | 2021-12-20 | 2022-04-26 | 惠州视维新技术有限公司 | Backlight module and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20170607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |