CN202813036U - Direct down type backlight module and liquid crystal display device - Google Patents
Direct down type backlight module and liquid crystal display device Download PDFInfo
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- CN202813036U CN202813036U CN201220333272XU CN201220333272U CN202813036U CN 202813036 U CN202813036 U CN 202813036U CN 201220333272X U CN201220333272X U CN 201220333272XU CN 201220333272 U CN201220333272 U CN 201220333272U CN 202813036 U CN202813036 U CN 202813036U
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- aphototropism mode
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Abstract
The utility model relates to a direct down type backlight module and liquid crystal display device. The direct down type backlight module comprises a rear panel, a plurality of point light sources, a diffuser plate, a first brightness enhancement film and a second brightness enhancement film. The rear panel comprises a base board and at least two side plates; the a plurality of point light sources are provided on the base board; the diffuser plate is arranged on the side plates; the two brightness enhancement films are positioned on the diffuser plate; the prism structure of the first brightness enhancement film is in an angle of 90 degrees with the horizontal direction and the prism structure of the second brightness enhancement film is in an angle of 8 degrees. The utilization of the 90-degree-angle first brightness enhancement film and the 8-degree-angle second brightness enhancement film of the direct down type backlight module and liquid crystal display device can prevent the water corrugated because of the interference of the second brightness enhancement film and liquid crystal display panel and saving the use of the diffuser plate and lowering the cost.
Description
Technical field
The utility model relates to backlight module, particularly relates to a kind of down straight aphototropism mode set and liquid crystal indicator.
Background technology
Liquid crystal indicator has the advantages such as low voltage operating, radiationless, lightweight and volume be little, and it receives people's concern.Liquid crystal indicator 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 spot light 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.
Existing 32 cun down straight aphototropism mode set comprises 36 LEDs, reflector plate, diffuser plate, prism structure the second brightening piece from the horizontal by the first brightening pieces of 90 degree and prism structure from the horizontal by 0 degree, increase brightness by two brightening pieces, with the requirement of the brightness of satisfying liquid crystal display.Yet the degree of 0 in liquid crystal panel polaroid can attract the light of parallel direction, from above-mentioned the second brightening piece light out, can be attracted by the polaroid of 0 degree in the liquid crystal panel, the water ripples shape occurs thereby produce to interfere, and affects the picture disply quality.For this reason, by dividing into diffusion sheet at two brightening pieces to eliminate interference, increased cost in the existing backlight module.
The utility model content
Based on this, be necessary to provide a kind of down straight aphototropism mode set that does not need diffusion sheet also can eliminate interference, to reduce cost.
A kind of down straight aphototropism mode set, comprise backboard, a plurality of spot light, diffuser plate, the first brightening piece and the second brightening piece, described backboard comprises base plate and at least two side plates, described a plurality of spot light is arranged on the described base plate, described diffuser plate is arranged on the described side plate, described two brightening pieces are positioned on the described diffuser plate, and the prism structure of described the first brightening piece is from the horizontal by an angle of 90 degrees, and the lip-deep prism structure of described the second brightening piece is from the horizontal by 8 degree angles.
Among embodiment, described spot light is LED therein.
Among embodiment, described spot light is the LED with lens therein.
Among embodiment, the distance between described diffuser plate and the described LED centre of luminescence is 27.5 millimeters therein, is spaced apart 73 millimeters between same adjacent two LEDs transversely, is spaced apart 118 millimeters between same adjacent two LEDs on vertically.
Therein among embodiment, totally 27 of described LED, minute three rows, 9 of every rows are arranged on the base plate.
Among embodiment, described down straight aphototropism mode set further comprises reflector plate therein, and reflector plate comprises the bottom surface that is arranged on the base plate, and described bottom surface is provided with the through hole that passes for LED.
Among embodiment, described backboard comprises four side plates therein, and described reflector plate further comprises four sides, upper and lower, left and right, and the side is separately positioned on the side plate of backboard, has a V font gap between the adjacent side.
Among embodiment, the angle of described V font is 19 degree therein.
Therein among embodiment, whenever the distance that ranked first between the edge on limit, left side of LEDs and reflector plate is between 50 millimeters to 80 millimeters, whenever the distance that ranked nineth between the edge of right edge of LEDs and reflector plate is between 50 millimeters to 80 millimeters, distance between the edge of the LED that first row is all and the upper side edge of reflector plate is between 50 millimeters to 80 millimeters, and the distance between the edge of the LED that the 3rd row is all and the lower side of reflector plate is between 50 millimeters to 80 millimeters.
A kind of liquid crystal indicator comprises the liquid crystal panel with 0 degree polaroid and is arranged at liquid crystal panel front frame all around and the backlight module that is arranged on the described liquid crystal panel back side that described backlight module adopts down straight aphototropism mode set described above.
Compared to prior art, the utility model down straight aphototropism mode set and liquid crystal indicator adopt the second brightening piece 504 of 8 degree, when not affecting light enhancing effect so that not parallel from 0 degree direction of the polaroid of the direction of the second brightening piece 504 light out and liquid crystal panel, can do not attracted by polaroid, thereby prevent that the second brightening piece 504 and 0 degree polaroid of liquid crystal panel from producing interference and the water ripples shape occurring, save the use of diffusion sheet, reduced cost.
Description of drawings
Fig. 1 is the side view of down straight aphototropism mode set of the present utility model;
Fig. 2 is that LED of the present utility model and reflector plate are arranged on the plane on the base plate;
Fig. 3 is the plane of the first brightening piece of the present utility model;
Fig. 4 is the plane of the second brightening piece of the present utility model.
The specific embodiment
Be described in detail below in conjunction with specific embodiment and the accompanying drawing structure to down straight aphototropism mode set and liquid crystal indicator, so that it is clearer.
Liquid crystal indicator of the present utility model comprises: liquid crystal panel and the backlight module that is arranged on the liquid crystal panel back side with 0 degree polaroid.Fig. 1 is the side view of down straight aphototropism mode set of the present utility model.Ginseng Fig. 1, a kind of down straight aphototropism mode set comprises backboard 10, LED20, reflector plate 30, diffuser plate 40 and optical diaphragm group 50.Wherein:
Ginseng Fig. 2, reflector plate 30 comprises four sides in bottom surface (not label) and upper and lower, left and right (not label), and the bottom surface is arranged on the base plate 110 of backboard 10, and the side is separately positioned on the side plate 120 of backboard 10.Reflector plate 30 is provided with the through hole (not shown) of passing for LED20 in the bottom surface.Has a V font gap between the adjacent side of reflector plate 30.The angle of this V font can be according to optics needs designs, namely guarantee reflector plate 30 smooth and light leak not after being assembled on the backboard 10.In the present embodiment, the angle of V font is 19 degree.In the utility model, the employed noun of locality, upper and lower, left and right are the vertical and ground of liquid crystal panel with liquid crystal indicator, and liquid crystal panel faces the user and is described for benchmark, only be to explanation of the present utility model, conduct is not to restriction of the present utility model.
Preferred 32 cun of the down straight aphototropism mode set of present embodiment.Totally 27 of LED20, minute three rows, 9 of every rows are arranged on the base plate 110.Be spaced apart 73 millimeters between same adjacent two LEDs transversely, be spaced apart 118 millimeters between same adjacent two LEDs on vertically.Whenever ranked first between the edge on limit, left side of LEDs 20 and reflector plate 30 is between 50 millimeters to 80 millimeters apart from d.Whenever ranked nineth between the edge of right edge of LEDs 20 and reflector plate 30 is between 50 millimeters to 80 millimeters apart from d.Between the edge of the upper side edge of the LED that first row is all and reflector plate 30 is between 50 millimeters to 80 millimeters apart from d.Between the edge of the LED that the 3rd row is all and the lower side of reflector plate 30 is between 50 millimeters to 80 millimeters apart from d.
Fig. 3 is the top view of the first brightening piece of the present utility model; Fig. 4 is the top view of the second brightening piece of the present utility model.Ginseng Fig. 1, Fig. 3 and Fig. 4, optical model sheet group 50 is positioned on the diffuser plate 40.Optical diaphragm group 50 comprises the first brightening piece 502 and the second brightening piece 504.The first brightening piece 502 lip-deep prism structures are from the horizontal by an angle of 90 degrees, and the second brightening piece 504 lip-deep prism structures are from the horizontal by 8 degree angles.
Compared to prior art, the utility model adopts the second brightening piece 504 of 8 degree, when not affecting light enhancing effect so that not parallel from 0 degree direction of the polaroid of the direction of the second brightening piece 504 light out and liquid crystal panel, therefore can not attracted by polaroid, thereby prevent that the second brightening piece 504 and 0 degree polaroid of liquid crystal panel from producing interference and the water ripples shape occurring, save the use of diffusion sheet, reduced cost.
In addition, present embodiment is made as 27.5 millimeters with light mixing distance, is spaced apart 73 millimeters between same adjacent two LEDs 20 transversely, is spaced apart 118 millimeters between same adjacent two LEDs 20 on vertically.So design can be so that transversely or vertically the uniformity of the lap of the light that sends of upper adjacent two LEDs reaches more than 80%, therefore only adopt three rows, every row's 9 LEDs 20, totally 27 LEDs 20 just can replace original 36 LEDs, reach same visual effect, reduced cost, than common down straight aphototropism mode set escapable cost more than 15%.
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. down straight aphototropism mode set, comprise backboard, a plurality of spot light, diffuser plate, the first brightening piece and the second brightening piece, described backboard comprises base plate and at least two side plates, described a plurality of spot light is arranged on the described base plate, described diffuser plate is arranged on the described side plate, and described two brightening pieces are positioned on the described diffuser plate, it is characterized in that, the prism structure of described the first brightening piece is from the horizontal by an angle of 90 degrees, and the lip-deep prism structure of described the second brightening piece is from the horizontal by 8 degree angles.
2. down straight aphototropism mode set according to claim 1 is characterized in that, described spot light is LED.
3. down straight aphototropism mode set according to claim 1 is characterized in that, described spot light is the LED with lens.
4. down straight aphototropism mode set according to claim 3, it is characterized in that, distance between described diffuser plate and the described LED centre of luminescence is 27.5 millimeters, be spaced apart 73 millimeters between same adjacent two LEDs transversely, be spaced apart 118 millimeters between same adjacent two LEDs on vertically.
5. down straight aphototropism mode set according to claim 4 is characterized in that, totally 27 of described LED, and minute three rows, 9 of every rows are arranged on the base plate.
6. down straight aphototropism mode set according to claim 5 is characterized in that, described down straight aphototropism mode set further comprises reflector plate, and reflector plate comprises the bottom surface that is arranged on the base plate, and described bottom surface is provided with the through hole that passes for LED.
7. down straight aphototropism mode set according to claim 6, it is characterized in that described backboard comprises four side plates, described reflector plate further comprises four sides, upper and lower, left and right, the side is separately positioned on the side plate of backboard, has a V font gap between the adjacent side.
8. down straight aphototropism mode set according to claim 7 is characterized in that, the angle of described V font is 19 degree.
9. down straight aphototropism mode set according to claim 7, it is characterized in that, whenever the distance that ranked first between the edge on limit, left side of LEDs and reflector plate is between 50 millimeters to 80 millimeters, whenever the distance that ranked nineth between the edge of right edge of LEDs and reflector plate is between 50 millimeters to 80 millimeters, distance between the edge of the LED that first row is all and the upper side edge of reflector plate is between 50 millimeters to 80 millimeters, and the distance between the edge of the LED that the 3rd row is all and the lower side of reflector plate is between 50 millimeters to 80 millimeters.
10. liquid crystal indicator comprises: have the liquid crystal panel of 0 degree polaroid and be arranged on the backlight module at the described liquid crystal panel back side, it is characterized in that: described backlight module adopts such as each described down straight aphototropism mode set in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220333272XU CN202813036U (en) | 2012-07-10 | 2012-07-10 | Direct down type backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220333272XU CN202813036U (en) | 2012-07-10 | 2012-07-10 | Direct down type backlight module and liquid crystal display device |
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| CN202813036U true CN202813036U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201220333272XU Expired - Fee Related CN202813036U (en) | 2012-07-10 | 2012-07-10 | Direct down type backlight module and liquid crystal display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204228A (en) * | 2015-10-20 | 2015-12-30 | 深圳市华星光电技术有限公司 | Direct type backlight module and liquid crystal display |
| WO2016165293A1 (en) * | 2015-04-16 | 2016-10-20 | 深圳Tcl新技术有限公司 | Direct-lit backlight module and liquid crystal display device |
| WO2019076237A1 (en) * | 2017-10-17 | 2019-04-25 | 苏州欧普照明有限公司 | Lighting device |
| CN110333628A (en) * | 2019-07-09 | 2019-10-15 | 武汉华星光电技术有限公司 | A kind of backlight module and display device |
| CN112764263A (en) * | 2019-10-21 | 2021-05-07 | 湖南鸿阳光电科技有限公司 | Backlight structure capable of improving color gamut |
| CN114280846A (en) * | 2021-12-29 | 2022-04-05 | Tcl华瑞照明科技（惠州）有限公司 | Backlight module, lighting device and display device |
-
2012
- 2012-07-10 CN CN201220333272XU patent/CN202813036U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165293A1 (en) * | 2015-04-16 | 2016-10-20 | 深圳Tcl新技术有限公司 | Direct-lit backlight module and liquid crystal display device |
| CN105204228A (en) * | 2015-10-20 | 2015-12-30 | 深圳市华星光电技术有限公司 | Direct type backlight module and liquid crystal display |
| CN105204228B (en) * | 2015-10-20 | 2019-02-26 | 深圳市华星光电技术有限公司 | Direct type backlight module and liquid crystal display |
| WO2019076237A1 (en) * | 2017-10-17 | 2019-04-25 | 苏州欧普照明有限公司 | Lighting device |
| CN110333628A (en) * | 2019-07-09 | 2019-10-15 | 武汉华星光电技术有限公司 | A kind of backlight module and display device |
| CN112764263A (en) * | 2019-10-21 | 2021-05-07 | 湖南鸿阳光电科技有限公司 | Backlight structure capable of improving color gamut |
| CN114280846A (en) * | 2021-12-29 | 2022-04-05 | Tcl华瑞照明科技（惠州）有限公司 | Backlight module, lighting device and display device |
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Legal Events
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| 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: 20130320 Termination date: 20150710 |
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| EXPY | Termination of patent right or utility model |