CN203731204U - Direct-lit type liquid crystal display device and backlight module thereof - Google Patents
Direct-lit type liquid crystal display device and backlight module thereof Download PDFInfo
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- CN203731204U CN203731204U CN201320877882.0U CN201320877882U CN203731204U CN 203731204 U CN203731204 U CN 203731204U CN 201320877882 U CN201320877882 U CN 201320877882U CN 203731204 U CN203731204 U CN 203731204U
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- liquid crystal
- backlight module
- reflector plate
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- backlight
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Abstract
The utility model discloses a backlight module which comprises a reflective sheet and a backlight and is characterized in that the reflective sheet is provided with a front surface, a rear surface, two first lateral surfaces and two second lateral surfaces. The two first lateral surfaces are respectively connected with the left edge and the right edge of the front surface and the rear surface and respectively incline outwards, included angles are formed by the two first lateral surfaces and the direction perpendicular to the reflective sheet, and the two second lateral surfaces are respectively connected with the upper edge and the lower edge of the front surface and the rear surface. Due to the fact that the first lateral surfaces of the reflective sheet incline outwards and the included angles are formed by the two first lateral surfaces and the direction perpendicular to the reflective sheet, a light path of light emitted by the backlight in the reflective sheet can be regulated effectively, and shadow existing all around caused by a direct-lit type is solved.
Description
Technical field
The utility model relates to technical field of liquid crystal display, is specifically related to a kind of liquid crystal indicator and backlight module thereof of straight-down negative light inlet.
Background technology
The light inlet mode in LCD TV backlight source is mainly side entering type and straight-down negative at present.Side entering type light inlet mode is LED light source to be arranged on to the side of LGP, and the light sending by LED light source is propagated and by site, light reflected to LGP and projects on liquid crystal display in LGP.Straight-down negative light inlet mode is LED light source to be arranged on uniformly to the rear of reflector plate with the form of matrix, and LED light source is sent out through reflector plate, diffuser plate light-output is projected on liquid crystal display.
Yet due to straight-down negative light inlet mode be by LED light source with the form of matrix be arranged on uniformly diffuser plate below, therefore when or cost less at a number of LED light source is lower, be often difficult to take into account center brightness and two indexs of optics taste simultaneously, thereby cause liquid crystal display to occur the phenomenon of surrounding shadow.
Utility model content
The purpose of this utility model is to provide a kind of liquid crystal indicator and backlight module thereof of straight-down negative light inlet, is intended to solve the surrounding shadow that straight-down negative light inlet causes.
In order to realize the purpose of this utility model, the utility model provides a kind of backlight module, comprises reflector plate and backlight; It is characterized in that, described reflector plate has front surface, rear surface, two first sides and two second sides, two first sides are connected to the left and right sides edge of front surface and rear surface, described two first sides are outward-dipping and have angle with the direction of vertical reflection sheet respectively, and two second sides are connected to the both side edges up and down of front surface and rear surface.
Preferably, described backlight has the light source on a plurality of rear surfaces that are arranged on reflector plate of arranging with matrix form, wherein close on the distance between the light source of surperficial left and right sides edge and the respective lateral edge of the rear surface of reflector plate after reflector plate and be distance between light source 0.34 times to 0.56 times.
Preferably, described backlight is LED-backlit source, and described light source is LED light source.
Preferably, the angle of the direction of described the first side and vertical reflection sheet is between 50 degree to 66 degree.
Preferably, described two second sides are also outward-dipping and have angle with the direction of vertical reflection sheet respectively.
Preferably, the angle of the direction of described the second side and vertical reflection sheet is between 50 degree to 66 degree.
Preferably, described backlight module also comprises the diffusion sheet that is positioned at reflector plate the place ahead.
Correspondingly, the present invention also provides a kind of liquid crystal indicator of straight-down negative light inlet, comprises the front frame, liquid crystal display, above-mentioned backlight module and the backboard that set gradually.
Due to the liquid crystal indicator of the utility model straight-down negative light inlet and the reflector plate of backlight module by the first side outward-dipping and and the direction of vertical reflection sheet between an angle is set, thereby effectively adjust light that backlight the sends light path in reflector plate, and then solve the surrounding shadow that straight-down negative light inlet causes.
Accompanying drawing explanation
Fig. 1 is the front view of the liquid crystal indicator of the utility model straight-down negative light inlet;
Fig. 2 is the three-dimensional exploded view of the liquid crystal indicator of straight-down negative light inlet shown in Fig. 1;
Fig. 3 is the reflector plate of the liquid crystal indicator of straight-down negative light inlet shown in Fig. 2 and the three-dimensional combination figure after the combination of LED-backlit source;
Fig. 4 is along the sectional view of A-A line after the combination of reflector plate shown in Fig. 3 and LED-backlit source;
Fig. 5 is along the sectional view of B-B line after the combination of reflector plate shown in Fig. 3 and LED-backlit source.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of liquid crystal indicator of straight-down negative light inlet, refer to Fig. 1 to Fig. 3, it has disclosed an embodiment of the liquid crystal indicator of the utility model straight-down negative light inlet, in the present embodiment, the liquid crystal indicator of straight-down negative light inlet comprises front frame 100, liquid crystal display 200, backlight module 300 and the backboard 400 setting gradually.
Refer to Fig. 1 and Fig. 2, front frame 100 has framework 110 and vertically extends next side 120 from framework 110.Liquid crystal display 200 is fixed in framework 110.
Refer to Fig. 2 to Fig. 4, backlight module 300 has reflector plate 310, diffusion sheet 320 and LED-backlit source 330.Reflector plate 310 is arranged on the rear of liquid crystal display 200, and it has front surface 311, rear surface 312, two first sides 313 and two second sides 314.Front surface 311 and rear surface 312 are all square.Two first sides 313 are connected to the left and right sides edge of front surface 311 and rear surface 312, this first side 313 is outward-dipping, and the direction of itself and vertical reflection sheet 310 has angle α, the scope of this angle α is between 50 degree and 66 degree, that is 50 degree≤angle α≤66 are spent.Two second sides 314 are connected to the both side edges up and down of front surface 311 and rear surface 312, and this second side 314 is also outward-dipping and have angle β with the direction of vertical reflection sheet 310, and the scope of this angle β is also between 50 degree and 66 degree.
Refer to Fig. 2, diffusion sheet 320 is arranged between reflector plate 310 and liquid crystal display 200, carries out scattering, thereby light is projected on liquid crystal display 200 uniformly for the light to through reflector plate 310.
Refer to Fig. 3 to Fig. 5, LED-backlit source 330 has a plurality of LED light sources 331 of arranging with matrix form, between adjacent LED light source 331, has preset distance P.LED light source 331 is arranged on the rear surface 312 of reflector plate 310, and close on the LED light source 331 of surperficial 312 left and right sides edge after reflector plate 310 and there is preset distance L respectively and between 312 respective lateral edge of rear surface, this preset distance L is between 0.34 times and 0.56 times of preset distance P, that is the preset distance P of the preset distance of 0.34 times P≤preset distance L≤0.56 times.
Refer to Fig. 2, the side plate 420 that backboard 400 has cover plate 410 and extends out from the lateral margin of cover plate 410, cover plate 410 is placed in the rear in LED-backlit source 330, side plate 420 is fixedly on the side 120 of former frame 100, thereby between cover plate 410 and framework 110, forms the spatial accommodation that holds liquid crystal display 200 and backlight module 300.
Owing to being provided with the angle α of 50 degree to 66 degree between the first side 313 of the reflector plate 310 of the liquid crystal indicator of the utility model straight-down negative light inlet and the direction of vertical reflection sheet 310, thereby effectively adjust the light that sends in LED-backlit source 330 light path in reflector plate 310, and then reduce the surrounding shadow that straight-down negative light inlet causes; In addition, the LED-backlit source 330 of the liquid crystal indicator of the utility model straight-down negative light inlet is arranged on preset distance L between 0.34 times and 0.56 times of preset distance P, further to adjust the light that sends in LED-backlit source 330 light path in reflector plate 310, thereby further reduce the surrounding shadow that straight-down negative light inlet causes.
Through take 32 cun straight-down negative light inlet liquid crystal indicator as example carry out through experiment, when the direction of two first sides 313 and vertical reflection sheet 310 is parallel, the brightness of the liquid crystal indicator of straight-down negative light inlet by surrounding shadow dimmed and that cause is obvious gradually on mind-set four limits, at the preset distance P with preset distance L=0.56 times, and when angle α=50 are spent, preset distance L=0.4 preset distance P doubly, and when angle α=63 are spent, preset distance L=0.34 preset distance P doubly, and when angle α=66 are spent and preset distance L=0.44 preset distance P doubly, and when angle α=66 are spent, four groups of data are tested, experimental result shows: the liquid crystal indicator of straight-down negative light inlet can cause the change of light path because of the first side 313 reflections, and the increase along with angle α, the light that the first side 313 reflexes to liquid crystal display 200 edges increases gradually, thereby cause the brightness at liquid crystal display 200 edges to increase gradually, the liquid crystal indicator of straight-down negative light inlet also can cause the change of light path because of the increase of preset distance L, thereby the light that causes the first side 313 to reflex to liquid crystal display 200 edges reduces gradually, and then causes the brightness at liquid crystal display 200 edges to reduce gradually.More obvious for obviously reducing the surrounding shadow of liquid crystal indicator of straight-down negative light inlet, its center brightness and optics taste effect is met the requirements simultaneously, and the scope of angle α is chosen between 50 degree and 66 degree and preset distance L is chosen between 0.34 times and 0.56 times of preset distance P as good.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. a backlight module, comprises reflector plate and backlight; It is characterized in that, described reflector plate has front surface, rear surface, two first sides and two second sides, two first sides are connected to the left and right sides edge of front surface and rear surface, described two first sides are outward-dipping and have angle with the direction of vertical reflection sheet respectively, and two second sides are connected to the both side edges up and down of front surface and rear surface.
2. backlight module as claimed in claim 1, it is characterized in that, described backlight has the light source on a plurality of rear surfaces that are arranged on reflector plate of arranging with matrix form, wherein close on the distance between the light source of surperficial left and right sides edge and the respective lateral edge of the rear surface of reflector plate after reflector plate and be distance between light source 0.34 times to 0.56 times.
3. backlight module as claimed in claim 2, is characterized in that, described backlight is LED-backlit source, and described light source is LED light source.
4. backlight module as claimed in claim 1, is characterized in that, the angle of the direction of described the first side and vertical reflection sheet is between 50 degree to 66 degree.
5. backlight module as claimed in claim 1, is characterized in that, described two second sides are also outward-dipping and have angle with the direction of vertical reflection sheet respectively.
6. backlight module as claimed in claim 5, is characterized in that, the angle of the direction of described the second side and vertical reflection sheet is between 50 degree to 66 degree.
7. backlight module as claimed in claim 1, is characterized in that, also comprises the diffusion sheet that is positioned at reflector plate the place ahead.
8. a liquid crystal indicator for straight-down negative light inlet, comprises the front frame, liquid crystal display and the backboard that set gradually, it is characterized in that, also comprises the backlight module described in claim 1 to 7 any one being arranged between liquid crystal display and backboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877882.0U CN203731204U (en) | 2013-12-27 | 2013-12-27 | Direct-lit type liquid crystal display device and backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877882.0U CN203731204U (en) | 2013-12-27 | 2013-12-27 | Direct-lit type liquid crystal display device and backlight module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203731204U true CN203731204U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320877882.0U Expired - Fee Related CN203731204U (en) | 2013-12-27 | 2013-12-27 | Direct-lit type liquid crystal display device and backlight module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203731204U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016106872A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| WO2021120184A1 (en) * | 2019-12-20 | 2021-06-24 | 瑞仪光电(苏州)有限公司 | Light source module, backlight module, and display apparatus |
-
2013
- 2013-12-27 CN CN201320877882.0U patent/CN203731204U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016106872A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| US9983435B2 (en) | 2014-12-31 | 2018-05-29 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module and display device |
| WO2021120184A1 (en) * | 2019-12-20 | 2021-06-24 | 瑞仪光电(苏州)有限公司 | Light source module, backlight module, and display apparatus |
| CN113287060A (en) * | 2019-12-20 | 2021-08-20 | 瑞仪光电(苏州)有限公司 | Light source module, backlight module and display device |
| US11391988B2 (en) * | 2019-12-20 | 2022-07-19 | Radiant Opto-Electronics (Suzhou) Co., Ltd. | Light source module, 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20191227 |