CN201803318U - Light guide plate, back light module, and display device employing back light module - Google Patents
Light guide plate, back light module, and display device employing back light module Download PDFInfo
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- CN201803318U CN201803318U CN201020277801XU CN201020277801U CN201803318U CN 201803318 U CN201803318 U CN 201803318U CN 201020277801X U CN201020277801X U CN 201020277801XU CN 201020277801 U CN201020277801 U CN 201020277801U CN 201803318 U CN201803318 U CN 201803318U
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 27
- 238000010586 diagram Methods 0.000 description 4
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- 239000000203 mixture Substances 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model relates to a light guide plate which includes sides forming an isosceles trapezoid shape, and a bottom surface connected with the sides. The side surface where the top edge of the isosceles trapezoid shape is arranged is a first side surface; the side surface where the bottom edge of the isosceles trapezoid shape is arranged is a second side surface; a step for accommodating an LED in an LED light source are arranged on either the first side surface or the second side surface; and a concave for accommodating a step arranged on another light guide plate which is spliced with the light guide plate is arranged on either the second side surface or the first side surface. The utility model further provides a back light module formed by splicing the back light plates, and a display device employing the back light module. The light guide plate, the back light module and the display device of the utility model have the benefits as follows during implementation: light guide plate can be thinner; a back light source with a larger size can be obtained and is suitable for a large-sized liquid crystal display device.
Description
Technical field
The utility model relates to field of liquid crystal display, more particularly, relates to a kind of LGP, module backlight and display unit thereof.
Background technology
Display panels belongs to passive light-emitting component, and liquid crystal panel itself can not be luminous.Need provide backlight to liquid crystal panel.It is backlight and side is backlight that backlight arrangement generally can be divided into the end according to the difference of light source position, and the light source of end back lighting device is in the bottom (back) of liquid crystal display usually, and it comprises compositions such as light source, reflector plate, diffuser plate, diffusion barrier, prism film, brightness enhancement film.And side light source backlight is in the side of liquid crystal display, and it generally comprises compositions such as light source, reflector plate, LGP, prism film, brightness enhancement film.The difference that side is backlight and the end is backlight is to have used diffuser plate and LGP, and diffuser plate cooperates the light source mixed light of bottom, and LGP cooperates the light source of side, and photoconduction is become area source.Because the LED lamp is in both sides, side view LED module backlight can be accomplished very thin.And the direct-light type LED backlight module is because LED is arranged on the bottom (back side) of liquid crystal display, uniformity for brightness, generally need stay certain clearance, in general, the thickness limit of direct-light type LED backlight is 20mm, distance shortens again, by the design of blooming piece, all the lamp shadow of LED lamp can not be eliminated in any case.So the minimal thickness of general direct-light type LED backlight module is approximately 20mm.And side view LED is backlight, and when being used for large scale LED TV, because area is bigger, the four side distance center is far away, no matter how LGP designs the problem that the brightness uniformity difference can take place usually, center brightness also can be lower simultaneously.Also there is not at present a ultra-thin LED module backlight that can be applied to Large-size LCD Screen specially.The direct-light type LED backlight module can't be done thin, and side view LED module backlight can't be done greatly.Therefore, a kind of ultra-thin LED module backlight that can be used for Large-size LCD Screen just becomes necessary.
The utility model content
The technical problems to be solved in the utility model is, effect defect of bad in the time of can not being used for Large-size LCD Screen or being used for Large-size LCD Screen at the above-mentioned existing module backlight of prior art provides a kind of effective when being used for Large-size LCD Screen, LGP of thin thickness, module backlight and display unit thereof.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of LGP, comprise the side and the bottom surface that links to each other with described each side of forming the isosceles trapezoid shape; Side, described isosceles trapezoid shape top margin place is first side, and the side, place, base of described isosceles trapezoid shape is second side; Described first side or second side are provided with the step that is used for ccontaining led light source LED, and described second side or first side are provided with the depression of the step that is provided with on the LGP that is used for ccontaining and described LGP splicing.
In LGP described in the utility model, described step and described depression lay respectively at the middle part of its side, place.
In LGP described in the utility model, the position of described depression is suitable with size and described step.
In LGP described in the utility model, also comprise a plurality of independently latticed projectioies on the described bottom surface.
In LGP described in the utility model, described projection is more little apart near more its size of described step, and is big more apart from described step its size far away more.
In LGP described in the utility model, except that side, described step place, described each side and bottom surface all scribble the reflecting layer.
The utility model also relates to a kind of by the module backlight that above-mentioned LGP constituted, and is spliced at horizontal, vertical both direction by many LGPs, and described module vertically first side of two adjacent LGPs is adjacent or second side is adjacent; First side of two LGPs that described module is laterally adjacent is adjacent with second side; Described LGP comprises the side and the bottom surface that links to each other with described each side of forming the isosceles trapezoid shape; Side, described isosceles trapezoid shape top margin place is first side, and the side, place, base of described isosceles trapezoid shape is second side; Described first side or second side are provided with the step that is used for ccontaining led light source LED, and described second side or first side are provided with the depression that is used for the step that is provided with on ccontaining other LGPs.
In module backlight described in the utility model, described module backlight also comprises led light source, and described led light source comprises that at least its light that sends is entered the LED of described LGP respectively by described step.
In module backlight described in the utility model, the LED in the described led light source is welded on the circuit board parallel with described bottom surface of light guide plate, and described LED is the side light extracting LED.
The utility model also relates to a kind of display unit, comprises liquid crystal display, and described display unit is used the backlight of above-mentioned module backlight as its liquid crystal display.
Implement LGP of the present utility model, module backlight and display unit thereof, has following beneficial effect: make the step of light by this LGP side incident of its place owing to have on the LGP, and incident light is reflexed on the liquid crystal display by LGP, so this LGP can be done very thinly; Simultaneously, since this LGP be shaped as isosceles trapezoid, and have the depression of step of other LGPs of ccontaining and its splicing, so a plurality of LGP can seamlessly be stitched together, thereby obtain the backlight of a large-size, be suitable for the large scale liquid crystal display unit and use.
Description of drawings
Fig. 1 is that the position of single LGP and liquid crystal display concerns schematic diagram among the utility model LGP, module backlight and the display unit embodiment thereof;
Fig. 2 is that the A-A of LGP among Fig. 1 is to cutaway view;
Fig. 3 is that the A-A of another kind of LGP among Fig. 1 is to cutaway view;
Fig. 4 is a kind of longitudinal spliced schematic diagram of two LGPs among the described embodiment;
Fig. 5 is the another kind of longitudinal spliced schematic diagram of two LGPs among the described embodiment;
Fig. 6 is a plurality of LGP stitching position schematic diagrames in the module backlight among the described embodiment.
The specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described further.
As shown in Figure 1, in the utility model LGP, module backlight and display unit embodiment thereof, it is the back of LGP 2 at LCDs 1 that this LGP 2 closes with the position of liquid crystal display 1, in Fig. 1, the left side of liquid crystal display 1 is the face of watching of liquid crystal display 1, and the user watches this liquid crystal display 1 by this face; Its right side is the back of liquid crystal display 1, is provided with module backlight, and this module backlight just comprises LGP 2.Certainly, in actual applications, unlikely have only a LGP 2, in fact, module backlight is spliced by a plurality of LGPs 2.Fig. 1 just expresses the approximate location relation between liquid crystal display 1 and the LGP 2.
Fig. 2 be the A-A of LGP 2 among Fig. 1 to cutaway view, in the present embodiment, LGP 2 has two kinds of structures, the LGP 2 of these two kinds of structures cooperatively interacts, and can obtain larger area module backlight; Another structure of LGP 2 in the present embodiment has been shown among Fig. 3, and its details is described in the back.
The structure of LGP 2 when Fig. 2 is actually and is seen inwards by the outside of liquid crystal display 1.In Fig. 2, the shape of this LGP 2 is isosceles trapezoids, and the trapezoidal top margin of these isosceles is first side 23, and its base is second side 24, and what connect the top margin of above-mentioned isosceles trapezoid and base is its two waists, and it is similarly the side of LGP 2; Simultaneously, the bottom surface that also comprises LGP 2 25 that is connected with above-mentioned side.In the present embodiment, this LGP also comprises the step 21 that is used for ccontaining led light source (not shown) LED and caves in 22.In Fig. 1, above-mentioned step 21 protrudes in above-mentioned first side, wherein be equipped with the LED of led light source, the light that LED sends is entered in the LGP 2 by above-mentioned first side 23, after other sides of process LGP 2 and the reflection of bottom surface 25, be sent to (in Fig. 2, the ejaculation direction of this light is for leaving paper) on the liquid crystal display.And be used for step 21 on other LGPs of ccontaining other and this LGP 2 splicings in the depression 22 that is provided with on above-mentioned second side 24, so 22 the size of caving in and the size of step 21 are mated, promptly this depression 22 just can be held step 21 and enters.
Fig. 3 is the another kind of structure of LGP 2 in the present embodiment, only is that with structure difference shown in Figure 2 among Fig. 2, step 21 is positioned on first side 23, and depression 22 is positioned on second side 24; And in another structure of LGP shown in Figure 32, step 21 is positioned on second side 24, and depression 22 is positioned on first side 23.Fig. 4 shows Fig. 2 and 2 one kinds of longitudinal spliced position views of LGP shown in Figure 3, and Fig. 5 shows the another kind of longitudinal spliced position view of Fig. 2 and LGP 2 shown in Figure 3, wherein 41 among Fig. 4 is a kind of structure of LGP 2, and 42 is the another kind of structure of LGP 2; And 51 among Fig. 5 is the another kind of structure of LGP 2, and 52 is a kind of structure of LGP 2.One of obtaining in the module backlight of the alternate successively splicing of the LGP that splices among above-mentioned Fig. 4 and Fig. 5 is horizontally-spliced, a plurality of horizontally-spliced from top to bottom again splicing can constitute larger area module backlight.In the present embodiment, step 21 and depression 22 lay respectively at the middle part of its side, place, and this set makes that the splicing of a plurality of LGPs 2 is more easy.
In the present embodiment, led light source comprises the LED that its light that sends enters LGP 2 by first side 23 or second side 24 (being the side at step 21 places) at step 21 places of the LGP 2 of correspondence at least.LED in the led light source is welded on the circuit board parallel with the bottom surface 25 of above-mentioned LGP 2, and this circuit board is arranged on after the above-mentioned LGP 2, promptly is followed successively by liquid crystal display, LGP and circuit board from outside to inside; In the present embodiment, the LED in the led light source is the side light extracting LED, like this, the light that LED sends can be directly side by step 21 places enter LGP 2.After the light that LED sends enters LGP 2, will be reflected (referring to Fig. 2) along the direction of leaving paper by each side of above-mentioned LGP 2 and bottom surface.For further making above-mentioned radiative light stronger and more even, in the present embodiment, also comprise a plurality of independently latticed protruding (not shown)s on the above-mentioned bottom surface 25; The effect of these projectioies is the scattering powers that increase bottom surface 25, makes that the light of its reflection is more even.These protruding sizes are also inequality in same LGP 2 simultaneously, and are near more apart from step 21, and the size of projection is more little; Big more apart from step 21 its size far away more.This has increased the uniformity of scattering.Simultaneously, in the present embodiment, for strengthening reflective intensity, except that side, above-mentioned step 21 place, each side and the bottom surface 25 of LGP 2 all scribble the reflecting layer.
Also relate to a kind of module backlight that is constituted by above-mentioned LGP 2 in the present embodiment, be spliced at horizontal, vertical both direction by many LGPs 2, module backlight is 23 adjacent or second sides 24 adjacent (referring to Fig. 4, Fig. 5), first side of two adjacent LGPs 2 vertically; Module backlight is first side 23 and second side 24 adjacent (referring to Fig. 6) of two adjacent LGPs 2 laterally; These LGPs are exactly above-mentioned LGP, relevant for these LGP 2 structures detailed description of (comprising two kinds of structures of Fig. 2, Fig. 3), do not repeat them here in the above.
Also relate to a kind of display unit in the present embodiment, this display unit comprises liquid crystal display, and described display unit is used the backlight of above-mentioned module backlight as its liquid crystal display.These display unit comprise LCD TV, LCD or the like.
On overall, present embodiment provides a kind of LGP and splicing array thereof, it is applied to LED bottom side module backlight, become face luminous the some luminescent conversion that each LED lamp sends by LGP, each LED evenly is layered on the flat rear of liquid crystal, and each LED lamp and LGP then splice becomes a big area source.In the present embodiment, LGP has the isosceles-trapezium-shaped body, one side in its trapezoidal top margin or the base be the LED incidence surface, Dui Ying side has step to hold LED with it.The equal adularescent reflectance coating in all the other sides except that above-mentioned incidence surface and bottom surface.Bottom surface of light guide plate also is provided with netted raised points simultaneously; The size of the raised points that these are netted is also inequality.In the present embodiment, LGP and LGP are spliced into array.The utility model provides a kind of LGP and splicing array thereof, be applied to LED bottom side module backlight, by LGP the photoconduction that each LED lamp sends is become face light, each LED evenly is layered on the liquid crystal panel rear, and each LED lamp and LGP then splice becomes a big area source.Area source does not need to provide light mixing distance in the bottom, the end of comparing is backlight can accomplish very thin.
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 under the prerequisite that does not break away from the utility model design, 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. a LGP is characterized in that, comprises the side and the bottom surface that links to each other with described each side of forming the isosceles trapezoid shape; Side, described isosceles trapezoid shape top margin place is first side, and the side, place, base of described isosceles trapezoid shape is second side; Described first side or second side are provided with the step that is used for ccontaining led light source LED, and described second side or first side are provided with the depression of the step that is provided with on the LGP that is used for ccontaining and described LGP splicing.
2. LGP according to claim 1 is characterized in that, described step and described depression lay respectively at the middle part of its side, place.
3. LGP according to claim 2 is characterized in that, the position of described depression is suitable with size and described step.
4. LGP according to claim 3 is characterized in that, also comprises a plurality of independently latticed projectioies on the described bottom surface.
5. LGP according to claim 4 is characterized in that, described projection is more little apart near more its size of described step, and is big more apart from step its size far away more.
6. LGP according to claim 5 is characterized in that, except that side, described step place, described each side and bottom surface all scribble the reflecting layer.
7. a module backlight is characterized in that, is spliced at horizontal, vertical both direction by a plurality of LGPs described in claim 1, and described module vertically first side of two adjacent LGPs is adjacent or second side is adjacent; First side of two LGPs that described module is laterally adjacent is adjacent with second side.
8. module backlight according to claim 7 is characterized in that, described module backlight also comprises led light source, and described led light source comprises that at least its light that sends is entered the LED of described LGP respectively by described step.
9. module backlight according to claim 8 is characterized in that, the LED in the described led light source is welded on the circuit board parallel with described bottom surface of light guide plate, and described LED is the side light extracting LED.
10. a display unit comprises liquid crystal display, it is characterized in that, described display unit is used the backlight of module backlight as claimed in claim 9 as its liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020277801XU CN201803318U (en) | 2010-07-30 | 2010-07-30 | Light guide plate, back light module, and display device employing back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020277801XU CN201803318U (en) | 2010-07-30 | 2010-07-30 | Light guide plate, back light module, and display device employing back light module |
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| CN201803318U true CN201803318U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020277801XU Expired - Fee Related CN201803318U (en) | 2010-07-30 | 2010-07-30 | Light guide plate, back light module, and display device employing back light module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384409A (en) * | 2011-11-18 | 2012-03-21 | 深圳市华星光电技术有限公司 | Backlight system |
| CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
| WO2015109759A1 (en) * | 2014-01-21 | 2015-07-30 | 京东方科技集团股份有限公司 | Backlight source and display device |
| US10798833B1 (en) | 2019-05-13 | 2020-10-06 | Au Optronics Corporation | Tiling display apparatus and method of fabricating the same |
-
2010
- 2010-07-30 CN CN201020277801XU patent/CN201803318U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384409A (en) * | 2011-11-18 | 2012-03-21 | 深圳市华星光电技术有限公司 | Backlight system |
| WO2015109759A1 (en) * | 2014-01-21 | 2015-07-30 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
| US10798833B1 (en) | 2019-05-13 | 2020-10-06 | Au Optronics Corporation | Tiling display apparatus and method of fabricating the same |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110420 Termination date: 20130730 |