CN201787493U - LED light guide device and liquid crystal display device - Google Patents
LED light guide device and liquid crystal display device Download PDFInfo
- Publication number
- CN201787493U CN201787493U CN2010201485149U CN201020148514U CN201787493U CN 201787493 U CN201787493 U CN 201787493U CN 2010201485149 U CN2010201485149 U CN 2010201485149U CN 201020148514 U CN201020148514 U CN 201020148514U CN 201787493 U CN201787493 U CN 201787493U
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- Prior art keywords
- led
- lgp
- light guide
- guiding device
- liquid crystal
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 17
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model relates to an LED light guide device and a liquid crystal display device, which are suitable for the technical field of LEDs. The LED light guide device comprises a plurality of LED light guide plates and a fixed bracket; the fixed bracket comprises a metal rear casing and a plurality of frameworks arranged on the metal rear casing; and the LED light guide plates are respectively clamped in the frameworks of the fixed bracket in a one-to-one correspondence manner and connected in a mutually lapping manner. The fixed bracket is arranged, the frameworks are arranged on the fixed bracket respectively, and the light guide plates are correspondingly clamped in the frameworks, so that the local dimming is realized through the small LED light guide plates, and the resolution of the LED luminous area is greatly enhanced.
Description
Technical field
The utility model belongs to the LED technical field, relates in particular to a kind of LED guiding device and liquid crystal display.
Background technology
Along with the continuous development of liquid crystal technology, ultra-thin LCD TV becomes the main flow in TV market gradually.LCD TV is passive luminous, and needing to be equipped with backlight could normally show that backlight can be divided into two big classes on structure: direct-light-type backlight and side-light type back light.Wherein, side backlight leds (Light Emitting Diode, LED) the backlight TV can be accomplished thinlyyer than direct LED backlight TV, and have certain cost advantage, so side LED-backlit backlight source TV will become the main product of ultra-thin television.
LGP is one of vital optical module in the side-light type back light, the LGP in the backlight, and mainly there is the shortcoming of following two aspects in the LGP of prior art:
The first, LGP 21 " be " acrylic " sheet material of a globality, thickness is between 3～6mm; the light path regionality is relatively poor, sees also Fig. 1, and white rectangle is represented the LED that do not light; the black rectangle 23 " LED that expression is lighted, frame of broken lines is desirable hot spot, curve is actual hot spot.As seen, because material is evenly whole, hot spot is not desirable rectangular light spot, but the curve plane hot spot, hot spot has entered the light-emitting zone of contiguous LED, and the light path regionality is not obvious;
The second, LED is that whole driving is whole luminous, causes present most ELED TV not possess the local dimming function, and the electric energy power consumption of its backlight is fixed, not enough energy-conserving and environment-protective.
How to realize the local dimming function of ELED TV, improve the regional resolution of LED luminous zone.
The utility model content
The purpose of the utility model embodiment is to provide a kind of LED guiding device, is intended to improve the regional resolution of LED luminous zone.
The utility model embodiment is achieved in that a kind of LED guiding device, and described device comprises a plurality of LED LGPs and a fixed support:
Described fixed support includes the metal back cover and is arranged on a plurality of frameworks on the described metal back cover;
Described a plurality of LED LGP is fastened in the described support bracket fastened framework one to one, and described LED LGP is fitted and connected mutually.
The LED guiding device that the utility model provides, wherein, the bottom surface of described LED LGP is provided with the reflective sheeting with biadhesive, and described LED LGP connects described support bracket fastened metal back cover by described reflective sheeting.
The LED guiding device that the utility model provides, wherein, described guiding device also includes a plurality of led drive circuits, and described led drive circuit is corresponding one by one with described LED LGP.
The utility model also provides a kind of liquid crystal display, and described liquid crystal display comprises a LED guiding device, and described device comprises a plurality of LED LGPs and a fixed support:
Described fixed support includes the metal back cover and is arranged on a plurality of frameworks on the described metal back cover;
Described a plurality of LED LGP is fastened in the described support bracket fastened framework one to one, and described LED LGP is fitted and connected mutually.
The liquid crystal display that the utility model provides, wherein, the bottom surface of described LED LGP is provided with the reflective sheeting with biadhesive, and described LED LGP connects described support bracket fastened metal back cover by described reflective sheeting.
The liquid crystal display that the utility model provides, wherein, described guiding device also includes a plurality of led drive circuits, and described led drive circuit is corresponding one by one with described LED LGP.
The utility model is by being provided with a fixed support, described fixed support is provided with a plurality of frameworks, a plurality of LED LGPs are corresponding to be fastened in the described framework, realizes local dimming by a plurality of little LED LGPs, has improved the regional resolution of LED luminous zone greatly.
Description of drawings
Fig. 1 is the structural representation of LGP in the prior art;
Fig. 2 is the structural representation of the LED guiding device that provides of the utility model embodiment;
Fig. 3 is one of the LED guiding device that provides of the utility model embodiment schematic diagram under the LED irradiation;
Fig. 4 is two of the schematic diagram of the LED guiding device that provides of the utility model embodiment under the LED irradiation:
Fig. 5 A and Fig. 5 B are the luminous intensity schematic diagram of the utility model embodiment LED guiding device under the LED irradiation.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 2 shows the structure of the LED guiding device that the utility model embodiment provides.
Described LED guiding device comprises a plurality of LED LGPs 21 and a fixed support 22.
Described fixed support 22 is a frame structure, comprises a metal back cover 221, also comprises framework 222, and described framework 222 forms a plurality of groove shape structures.LED LGP 21 is fastened in each groove shape structure of described framework 222 formation, with framework 222 mutual adaptive engagement connections one to one.
Wherein, the light transmittance of described framework 222 is half of LGP 21 materials.
In specific implementation process,, be fitted and connected mutually between the adjacent LED LGP 21 in order further to be fixed in the described framework 222.
Wherein, the bottom surface of described LED LGP 21 also is provided with the reflective sheeting (scheming not shown) with biadhesive, described LED LGP 21 connects metal back cover 221 by described reflective sheeting, and metal back cover 221 most of zones are the plane, so that reliably bonding with reflective sheeting.
In specific implementation process, described guiding device also includes a plurality of led drive circuits (scheming not shown), and described led drive circuit is corresponding one by one with described LED LGP 21.
The utility model embodiment is by being each LED LGP 21 configuration corresponding LED drive circuit, can realize subregional dimming function, because along with the subregional adjustment of image content LED driving power consumption, make the electric energy power consumption of backlight no longer fix, thereby realization local dimming, compare with conventional ELED TV, the power consumption of the LED guiding device of embodiment of the present utility model is lower.
LED guiding device among Fig. 2 is 2x8 totally 16 subregions, show concrete preferred embodiment of the utility model, the LGP of this embodiment integral body is spliced by 16 less LGPs 21, and 16 LGPs 21 position by the framework 222 of fixed support 22.
In specific implementation process, see also Fig. 3, a string LED irradiation of little LGP 21 usefulness of each piece, when having only a string LED23 to light, its corresponding hot spot such as the dotted portion among Fig. 3 have tangible regionality.
See also Fig. 4, wherein, when adjacent two string LED24 light, when shining adjacent LGP, its hot spot as shown in Figure 4.
The radiation situation of corresponding diagram 3 and Fig. 4, its irradiation light light distribution is respectively shown in Fig. 5 A and Fig. 5 B.
Wherein, when representing only to light respectively a string LED, the dotted line among Fig. 5 A,, tangible optical attenuation is arranged at support bracket fastened edge because support bracket fastened light transmittance has only the LGP material half along the light distribution of LED orientation;
Light distribution after adjacent two string LED light simultaneously, be synthetic is the solid line among Fig. 5 B, obviously has tangible regionality.
The utility model embodiment also provides a kind of liquid crystal display, and described liquid crystal display comprises above-mentioned LED guiding device, in view of this LED guiding device in above existing detailed description, repeat no more herein.
The utility model is by being provided with a fixed support, described fixed support is provided with a plurality of frameworks, a plurality of LED LGPs are corresponding to be fastened in the described framework, realizes local dimming by a plurality of little LED LGPs, has improved the regional resolution of LED luminous zone greatly.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a LED guiding device is characterized in that, described device comprises a plurality of LED LGPs and a fixed support:
Described fixed support includes the metal back cover and is arranged on a plurality of frameworks on the described metal back cover;
Described a plurality of LED LGP is fastened in the described support bracket fastened framework one to one, and described LED LGP is fitted and connected mutually.
2. LED guiding device as claimed in claim 1 is characterized in that the bottom surface of described LED LGP is provided with the reflective sheeting with biadhesive, and described LED LGP connects described support bracket fastened metal back cover by described reflective sheeting.
3. LED guiding device as claimed in claim 1 is characterized in that described guiding device also includes a plurality of led drive circuits, and described led drive circuit is corresponding one by one with described LED LGP.
4. a liquid crystal display is characterized in that, described liquid crystal display comprises a LED guiding device, and described device comprises a plurality of LED LGPs and a fixed support:
Described fixed support includes the metal back cover and is arranged on a plurality of frameworks on the described metal back cover;
Described a plurality of LED LGP is fastened in the described support bracket fastened framework one to one, and described LED LGP is fitted and connected mutually.
5. liquid crystal display as claimed in claim 4 is characterized in that the bottom surface of described LED LGP is provided with the reflective sheeting with biadhesive, and described LED LGP connects described support bracket fastened metal back cover by described reflective sheeting.
6. liquid crystal display as claimed in claim 4 is characterized in that described guiding device also includes a plurality of led drive circuits, and described led drive circuit is corresponding one by one with described LED LGP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201485149U CN201787493U (en) | 2010-03-26 | 2010-03-26 | LED light guide device and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201485149U CN201787493U (en) | 2010-03-26 | 2010-03-26 | LED light guide device and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787493U true CN201787493U (en) | 2011-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201485149U Expired - Fee Related CN201787493U (en) | 2010-03-26 | 2010-03-26 | LED light guide device and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152494A1 (en) * | 2016-03-08 | 2017-09-14 | 武汉华星光电技术有限公司 | Backlight source structure of liquid crystal display and liquid crystal display |
-
2010
- 2010-03-26 CN CN2010201485149U patent/CN201787493U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152494A1 (en) * | 2016-03-08 | 2017-09-14 | 武汉华星光电技术有限公司 | Backlight source structure of liquid crystal display and liquid crystal display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130326 |