CN101419360A - Back light module unit - Google Patents
Back light module unit Download PDFInfo
- Publication number
- CN101419360A CN101419360A CNA2007101677739A CN200710167773A CN101419360A CN 101419360 A CN101419360 A CN 101419360A CN A2007101677739 A CNA2007101677739 A CN A2007101677739A CN 200710167773 A CN200710167773 A CN 200710167773A CN 101419360 A CN101419360 A CN 101419360A
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- China
- Prior art keywords
- concentration piece
- prism
- guide plate
- light guide
- inverse edge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
An LCD backlight module mainly comprises a light guide plate. A reflection sheet is jointed on the bottom surface of the light guide plate, the side face is combined with a luminous module, and the top surface is sequentially jointed with an inverse prism condensing sheet, a front prism condensing sheet and an upper diffusion sheet, wherein, the prism face of the inverse prism condensing sheet face the end face of the light guide plate, and the prism face of the front prism condensing sheet faces the upper diffusion sheet; when light enters the light guide plate from the side surface of the light guide plate, the light is refracted by the reflection sheet and the light guide plate so that angle of emergent light of the beam is larger; at the moment, the light is converged by the inverse prism condensing sheet and guided to a center, and then converged by the front prism condensing sheet, thus improving brightness of the center and further achieving the purpose of the maximum brightness.
Description
Technical field
The present invention relates to a kind of LCD module backlight.
Background technology
See also shown in Figure 1A to Fig. 1 F, be existing LCD module synoptic diagram backlight, shown in Figure 1A, it consists predominantly of light guide plate 81, these light guide plate 81 bottom surfaces are fitted with reflecting surface 82, the side is combined with illuminating module 83, has stacked down diffusion sheet 84, first concentration piece 85, second concentration piece 86 on the top end surface in regular turn and has gone up diffusion sheet 87; After light 88 is by side incident process catoptron 82, light guide plate 81, can find the rising angle very big (shown in Figure 1B and Fig. 1 G) of this light 88, again through following diffusion sheet 84 with light 88 all after the light, the distribution of this light field promptly can be a little mild (shown in Fig. 1 C), and then through behind first, second concentration piece 85,86, utilize the principle (shown in Fig. 1 D) of light 88 refractions, can make light 88 converge to center (shown in Fig. 1 E).
Yet, because of first, second concentration piece 85,86 are prism structure, make the light of its same direction incident, only be incident to significant surface after the refraction and just can converge (shown in Fig. 1 D) toward the center, then can disperse if be incident to another side, can't converge (shown in Fig. 1 F) toward the center, so via first, second concentration piece 85, the 86 light maximum brightness meetings of being converged are far below the maximum brightness that gives out via following diffusion sheet 84, because, with first, second concentration piece 85,86 all in positive prism collocation ornaments mode, can make light consume twice so that this first, second concentration piece 85,86 can't reach high brightness with light.
Summary of the invention
The object of the present invention is to provide a kind of inverse edge concentration piece that sees through that light is converged to the center, see through positive rib concentration piece again light is converged once more, with the LCD that reaches maximum brightness purpose module backlight.
Another purpose of the present invention is to provide a kind of can be arranged to not isosceles with the prism of inverse edge concentration piece, to increase the LCD module backlight of light convergence usefulness.
For reaching above purpose, the present invention has taked following technical scheme: a kind of LCD module backlight comprises light guide plate, reflector plate, illuminating module, inverse edge concentration piece, positive rib concentration piece and goes up diffusion sheet; Wherein, this reflector plate is fitted in the bottom surface of light guide plate; This illuminating module is incorporated into the side of light guide plate; And with inverse edge concentration piece, positive rib concentration piece and go up the end face that diffusion sheet is placed in light guide plate in regular turn, and the prism facets of this inverse edge concentration piece is towards the light guide plate end face, and the prism facets of positive rib concentration piece is then towards last diffusion sheet; When the light of illuminating module generation enters light guide plate via the light guide plate side, this light can be subjected to the refraction of reflector plate and light guide plate, make the rising angle of light quite big, at this moment, see through the inverse edge concentration piece light is restrained, light is restrained and guiding centre, see through positive rib concentration piece again light is restrained once more, promoting the center briliancy, and then reach the purpose of maximum brightness.
LCD provided by the present invention module backlight compared with prior art, has the following advantages:
1, the present invention sees through the inverse edge concentration piece light is converged to the center, sees through positive rib concentration piece again light is converged once more, to reach the purpose of maximum brightness.
2, the present invention can be arranged to not isosceles with the prism of inverse edge concentration piece, to increase light convergent usefulness.
Description of drawings
Figure 1A～G is a prior art LCD module synoptic diagram backlight;
Fig. 2 is the synoptic diagram of LCD of the present invention module backlight;
Fig. 3 is the action synoptic diagram of LCD of the present invention module backlight;
Fig. 4 is the inverse edge concentration piece operation chart of LCD of the present invention module backlight;
Fig. 5 is another inverse edge concentration piece synoptic diagram of LCD of the present invention module backlight;
Fig. 6 is the inverse edge concentration piece and positive rib concentration piece angular setting synoptic diagram of LCD of the present invention module backlight;
Fig. 7 is another concentration piece synoptic diagram of LCD of the present invention module backlight;
Fig. 8 is another enforcement synoptic diagram of LCD of the present invention module backlight;
Description of reference numerals: 1, light guide plate, 2, reflector plate, 3, illuminating module, 4, the inverse edge concentration piece, 41, prism facets, 5, positive rib concentration piece, 51, prism facets, 52, diffusion particle, 6, go up diffusion sheet, 7, positive inverse edge concentration piece, 71, positive prism, 72, reversed prism, 81, light guide plate, 82, reflector plate, 83 illuminating module, 84, following diffusion sheet, 85, first concentration piece, 86, second concentration piece, 87, go up diffusion sheet, 88, light.
Embodiment
Seeing also Fig. 2 and shown in Figure 3, is LCD provided by the present invention module backlight, mainly includes:
Inverse edge concentration piece 4, the prism facets 41 of this inverse edge concentration piece 4 is for being inverted; This inverse edge concentration piece 4 is placed in the end face of light guide plate 1, makes the prism facets 41 of inverse edge concentration piece 4 towards the end face of light guide plate 1;
Positive rib concentration piece 5, the prism facets 51 of this positive rib concentration piece 5 is for just putting; Positive rib concentration piece 5 is positioned on the inverse edge concentration piece 5, and the prism facets 51,41 of positive rib concentration piece 5 and inverse edge concentration piece 4 is for being crisscross arranged;
Last diffusion sheet 6 is to be arranged on the prism facets 51 of positive rib concentration piece 5;
The light source that is produced when illuminating module 3 is during via light guide plate 1 side incident, this light source promptly can be subjected to reflector plate 2 and light guide plate 1 constantly reflects, cause the light source rising angle quite big, and the light source of big rising angle can be incident upon on the prism facets 41 of inverse edge concentration piece 4 fully, because light is to be reflected in fully on the inverse edge concentration piece 4, can not produce any loss, after the light source that make not to have a consume is restrained fully via the prism facets 41 of inverse edge concentration piece 4, can be directed to the center, at this moment, prism facets 51 via positive rib concentration piece 5 restrains light source once more, can promote the center briliancy, and then produce the backlight of maximum light source.
In addition, the employed light guide plate 1 of different sidelight source modules backlight is also inequality with reflector plate 2, causes the angle of divergence of beam different relatively, so prism 41 angles of this inverse edge concentration piece 4 can be looked different module backlight, and change to some extent.
In addition, because light all is in the prism facets 41 of wide-angle incident inverse edge concentration piece 4, thus the prism 41 of inverse edge concentration piece 4 can be made into not isosceles prism, to reach the usefulness of best convergent light rays.
See also shown in Figure 4ly, be inverse edge concentration piece operation chart of the present invention, wherein, in the selection of prism 41 angles of inverse edge concentration piece 4, can be along with the difference of incident angle of light (a), and plane of refraction angle (b) also also can be different with reflecting surface angle (c).
See also shown in Figure 5, be another inverse edge concentration piece synoptic diagram of the present invention, because the light that light guide plate 1 is sent can be along with the uneven influence of angular distribution, the light that can't have only a direction fully, so can select multiple angles in the design of inverse edge concentration piece 4, the light that makes inverse edge concentration piece 4 multiple angles can be dispersed all can converge to the center.
See also shown in Figure 6ly, be inverse edge concentration piece of the present invention and positive rib concentration piece angular setting synoptic diagram, wherein, can appropriateness rotation inverse edge concentration piece 4 and the stagger angle of positive rib concentration piece 5, can alleviate the phenomenon of vision ripple (Moire).
See also shown in Figure 7, be another concentration piece synoptic diagram of the present invention, wherein, except utilizing the rotation inverse edge concentration piece 4 and the stagger angle of positive rib concentration piece 5 to alleviate vision ripple (Moire) phenomenon, can also in prism 41,51 parts of inverse edge concentration piece 4 and positive rib concentration piece 5 or PET base material, mix diffusion particle 52, alleviate vision ripple (Moire) phenomenon to reach to atomizing effect, to use.
See also shown in Figure 8ly, be that of the present invention another implement synoptic diagram, wherein, inverse edge concentration piece 4 and positive rib concentration piece 5 can be combined into positive inverse edge concentration piece 7, this positive inverse edge concentration piece 7 has positive prism 71 and reversed prism 72 simultaneously, so can promote optical performance, and effectively reduces the cost of cost.And positive inverse edge concentration piece 7 also can and be gone up diffusion sheet collocation use with light guide plate 1, reflector plate 2, illuminating module 3, and its principle of operation is all identical with Fig. 2 to Fig. 7.
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (11)
1. LCD module backlight comprises:
Light guide plate, its bottom surface is fitted with reflector plate, and is combined with illuminating module in the side of light guide plate;
It is characterized in that:
The inverse edge concentration piece, its prism facets is for being inverted; Described inverse edge concentration piece is placed in the end face of light guide plate, makes the prism facets of inverse edge concentration piece towards the end face of light guide plate;
Positive rib concentration piece, its prism facets is for just putting; Described positive rib concentration piece is positioned on the inverse edge concentration piece.
2. LCD according to claim 1 module backlight is characterized in that: the prism of described inverse edge concentration piece is isosceles prism not.
3. LCD according to claim 1 module backlight is characterized in that: each prism angle of described inverse edge concentration piece is all inequality.
4. LCD according to claim 1 module backlight is characterized in that: described inverse edge concentration piece has adjustable stagger angle with positive rib concentration piece.
5. LCD according to claim 1 module backlight is characterized in that: include diffusion particle in described inverse edge concentration piece and the positive rib concentration piece, to alleviate the vision waviness phenomena.
6. LCD according to claim 1 module backlight is characterized in that: also include diffusion sheet, described upward diffusion sheet is arranged at the top of positive rib concentration piece.
7. LCD module backlight comprises:
Light guide plate, its bottom surface is fitted with reflector plate, and is combined with illuminating module in the side of light guide plate;
It is characterized in that:
Positive inverse edge concentration piece, it has first surface and second surface, and this first surface is positive prism, and second surface then is a reversed prism; Described positive inverse edge concentration piece is placed in the end face of light guide plate, and the reversed prism face of second surface that makes positive inverse edge concentration piece is towards the end face of light guide plate.
8. LCD according to claim 7 module backlight is characterized in that: described reversed prism and positive prism are isosceles prism not.
9. LCD according to claim 7 module backlight is characterized in that: described positive prism and reversed prism have adjustable and mutually different stagger angle.
10. LCD according to claim 7 module backlight is characterized in that: include diffusion particle in the described positive inverse edge concentration piece, to alleviate the vision waviness phenomena.
11. LCD according to claim 7 module backlight is characterized in that: also include diffusion sheet, described upward diffusion sheet is arranged at the first surface top of positive inverse edge concentration piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101677739A CN101419360A (en) | 2007-10-26 | 2007-10-26 | Back light module unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101677739A CN101419360A (en) | 2007-10-26 | 2007-10-26 | Back light module unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101419360A true CN101419360A (en) | 2009-04-29 |
Family
ID=40630217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101677739A Pending CN101419360A (en) | 2007-10-26 | 2007-10-26 | Back light module unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101419360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279515A (en) * | 2014-09-23 | 2015-01-14 | 苏州仁捷瑞自动化科技有限公司 | Medical optical film |
| CN105911632A (en) * | 2013-04-30 | 2016-08-31 | 瑞仪光电股份有限公司 | Light guide device and backlight module |
| CN109686244A (en) * | 2019-02-02 | 2019-04-26 | 京东方科技集团股份有限公司 | Backlight module and display panel |
-
2007
- 2007-10-26 CN CNA2007101677739A patent/CN101419360A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911632A (en) * | 2013-04-30 | 2016-08-31 | 瑞仪光电股份有限公司 | Light guide device and backlight module |
| CN105911632B (en) * | 2013-04-30 | 2019-03-01 | 瑞仪光电股份有限公司 | Light guide device and backlight module |
| CN104279515A (en) * | 2014-09-23 | 2015-01-14 | 苏州仁捷瑞自动化科技有限公司 | Medical optical film |
| CN109686244A (en) * | 2019-02-02 | 2019-04-26 | 京东方科技集团股份有限公司 | Backlight module and display panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090429 |