CN201368925Y - Condenser of prism envelope line in distribution of string wave function - Google Patents
Condenser of prism envelope line in distribution of string wave function Download PDFInfo
- Publication number
- CN201368925Y CN201368925Y CNU2008201815029U CN200820181502U CN201368925Y CN 201368925 Y CN201368925 Y CN 201368925Y CN U2008201815029 U CNU2008201815029 U CN U2008201815029U CN 200820181502 U CN200820181502 U CN 200820181502U CN 201368925 Y CN201368925 Y CN 201368925Y
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- prism columns
- concentration piece
- wave function
- prism
- string wave
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Abstract
The utility model discloses a condenser of prism envelope lines in distribution of string wave function, wherein one end face of a base material is provided with a plurality of prisms, the envelope lines of the contour outlines of the prisms are in distribution of string wave function so as to reduce the light leakage of the condenser, the originally lost light can be partially recycled and reused so as to improve the brilliance of the condenser, Moire fringes and colored red fringes can be reduced, and the possibility of white dirt is reduced relatively when the condenser is used at the lower layer even if the base material of optical coating at the upper layer has relatively lower hardness.
Description
Technical field
The utility model is relevant concentration piece, the especially relevant backlight module of LCD (LCD, LiquidCrystal Display) or the concentration piece that other electronic installation needs of being used for.
Background technology
See also shown in Figure 1.General backlight liquid crystal display module comprises cold cathode fluorescent lamp (CCFL) 11, light guide plate (LGP) 12, following diffusion sheet (Bottom diffuser) 13, concentration piece (Prismsheet) 14, goes up diffusion sheet (Top diffuser) 15 and 16 compositions of reflecting plate (Reflector).
See also shown in Figure 2.Key element in the existing backlight module is concentration piece 14 (being also referred to as prismatic lens, brightness enhancement film), is used for controlling direction of light and concentrates towards the specific region.Existing concentration piece 14 is to be provided with a plurality of prism columns (Prism rod) 141 on a base material (Substrate) 140, the surface smoothing of prism columns, and (pitch) is identical for the spacing between a plurality of prism columns, and neat height of the height of a plurality of prism columns and drift angle are all 90 °.The burnishing surface of concentration piece 14 is an incidence surface, and the another side with prism structure is an exiting surface.Concentration piece 14 is concentrated to certain limit in order to will spread light, for example is used for the backlight liquid crystal display module, promotes the forward briliancy to reach the purpose of energy saving.
See also shown in Figure 3.The optical path pattern of concentration piece 14 effective (can be utilized) has three kinds:
1. (TRI Recycle) reclaimed in total reflection:
Light 143 in prism columns 141 about the virtual Z-axis 142 of vertical prism columns 141 bottom surfaces ± 4 ° of injections are fashionable, light 143 is recycled to the backlight direction because of twice total reflection, and is recycling once more by the baffle reflection of backlight module bottom;
2. (2nd Reflection Recycle) reclaimed in birefringence:
3. directly refraction (Directed Reflective):
Except that above-mentioned three kinds of optical paths, also have an optical path, as the path of light among Fig. 3 146, the light 146 of this optical path outside the ejaculation concentration piece 14 of wide-angle, can't be concentrated and use or reclaim and waste is scattered and disappeared after the reflection and refraction of prism columns 141.This is the reason of wide-angle light leak, and this light leak is the just waste of light source not, and the user can feel suddenly also that with great visual angle the time briliancy rises, and has the sensation of display bad.
Existing concentration piece with contour prism structure uses following shortcoming:
1. concentration piece has the serious problem of light leak with great visual angle.
2. concentration piece can have the optical dispersion phenomenon because of prism columns, as shown in Figure 4, has the tangible problem of rainbow line at specific direction, as shown in Figure 5.
3. as shown in Figure 6, on the top of strata mating plate 14 stacked a during blooming 17 of upper strata such as diffusion sheet or another concentration piece, can cause the phenomenon of white dirt or static dirt (Wet-out) instantly; This phenomenon is easy to generate when the base material hardness deficiency of upper strata blooming 17 especially, and white dirty phenomenon is obvious especially.
4. concentration piece is easy to generate Moire fringe (Moire interference patterns).
United States Patent (USP) the 5th, 771 discloses a kind of light guiding film, comprises the first surface and second body structure surface for No. 328.Second body structure surface comprises the prism district with repetitive structure; The prism district comprises one first district, has a plurality of prism elements, and its crest line and reference planes have first distance; Reach one second district and have a plurality of prism elements, its crest line and reference planes have second distance, and second distance is less than first distance; The width in first district is less than 30 microns (um), is supported in the lower surface of upper layer of material by a plurality of crest lines in the first higher district, and can make the whole crest line of light guiding film be supported in the lower surface of upper layer of material, can reduce the phenomenon that white dirt is arranged when observing with great visual angle.
United States Patent (USP) the 5th, 919, disclose a kind of blooming (Variablepitch structured optical film) of varied pitch structure for No. 551, the spacing that comprises at least three adjacent prisms posts has first group of prism columns of first kind of peak separation, and second group of prism columns; The peak separation of first group of prism columns is different from the peak separation of second group of prism columns, to reduce the visibility of Moire fringe.
The TaiWan, China patent disclosure that the applicant has applied for discloses a kind of blooming with surface structure No. 200841047, comprises that a surface of a base material includes a plurality of vertically near the light control element that is arranged in parallel; The height at the peak between a plurality of light control elements is periodic variation and the paddy spacing is corresponding variation, can effectively reduce the optical dispersion phenomenon of the folded blooming of two-phase, and can reduce the chance that folded line takes place.
The utility model content
In order to make concentration piece have new structure, further promote the functions of use of concentration piece, and propose the utility model.
Fundamental purpose of the present utility model is providing a kind of prism columns envelope to be the concentration piece that the string wave function distributes, and makes the prism columns envelope of concentration piece be the distribution of string wave function, can lower the light leakage phenomena of concentration piece.
Another purpose of the present utility model, providing a kind of prism columns envelope to be the concentration piece that the string wave function distributes, the light recycling that part originally can be scattered and disappeared thereby the briliancy that improves concentration piece, and can reduce the generation of Moire fringe and can alleviate the phenomenon of color red line.
Another purpose of the present utility model, providing a kind of prism columns envelope to be the concentration piece that the string wave function distributes, make the spacing of each prism columns of concentration piece that obvious difference of height be arranged, when being used for lower floor, even the base material hardness of upper strata blooming is lower, also more can not cause white dirty phenomenon.
The utility model provides a kind of prism columns envelope to be the concentration piece that the string wave function distributes, and comprising: one can supply light wear penetrates the base material that passes through; A plurality of prism columns are located at an end face of this base material; The envelope of the profile of these a plurality of prism columns is the string wave function and distributes.
Wherein the highest prism columns in these a plurality of prism columns and the difference in height between the minimum prism columns are between 5 microns to 50 microns.
Wherein the drift angle of these a plurality of prism columns is all 90 °.
Wherein the spacing at peak in these a plurality of prism columns and peak is equidistant.
Wherein these a plurality of prism columns form the shape in a plurality of cycles that just rise and fall.
Wherein these a plurality of cycles are to be a repetition period with seven prism columns.
Wherein this spacing is wherein a kind of of 32 microns or 50 microns.
Difference in height maximum between a plurality of prism columns in wherein should the repetition period is 10 microns.
Wherein the spacing at peak in these a plurality of prism columns and peak is unequal.
Wherein these a plurality of prism columns form the shape in a plurality of cycles that just rise and fall.
The beneficial effects of the utility model are:
Prism columns envelope of the present utility model is the concentration piece that the string wave function distributes, and can lower the light leakage phenomena of concentration piece, can reduce the generation of Moire fringe and can alleviate the phenomenon of color red line, also more can not cause white dirty phenomenon.
Description of drawings
Other purpose of the present utility model, effect and specific embodiment see also graphicly, be described in detail as follows, wherein:
Fig. 1 is the backlight module synoptic diagram of known display.
Fig. 2 is the synoptic diagram of known concentration piece.
Fig. 3 is the synoptic diagram of the various optical paths of known concentration piece.
Fig. 4 produces the synoptic diagram of optical dispersion phenomenon for prism columns.
Fig. 5 is the synoptic diagram that known concentration piece produces the rainbow line.
Fig. 6 supports the synoptic diagram that the upper strata blooming produces white dirty phenomenon for known concentration piece.
Fig. 7 is the synoptic diagram of the utility model first embodiment concentration piece.
Fig. 8 is the synoptic diagram of the utility model second embodiment concentration piece.
Fig. 9 is the synoptic diagram of the utility model the 3rd embodiment concentration piece.
Figure 10 is the schematic perspective view of the utility model the 4th embodiment concentration piece.
Figure 11 reclaims the synoptic diagram of light for the utility model concentration piece.
Figure 12 supports the synoptic diagram of upper strata blooming for the utility model concentration piece.
Figure 13 can alleviate the synoptic diagram of rainbow line phenomenon for the utility model concentration piece.
Embodiment
As shown in Figure 7, the utility model first embodiment prism columns envelope is the concentration piece 2 that the string wave function distributes, and comprises a base material 20, can for light wear penetrate by; One end face of base material 20 is provided with and is connected to a plurality of prism columns 21,22,23 that height rises and falls in regular turn.Seeing of macroscopic view, the profile envelope 30 of a plurality of prism columns 21,22,23 are the string wave function and distribute.The peak of adjacent prisms post 21,22,23 and the spacing d at peak can be equidistantly; Can also be not equidistant, as shown in Figure 8, the peak of a plurality of prism columns 24,25,26 of the utility model second embodiment concentration piece and spacing d1, the d2 at peak are unequal.
As shown in Figure 9, a plurality of prism columns 271,272,273 of the utility model the 3rd embodiment concentration piece 27 form the shape in a plurality of cycles that just rise and fall, and the number of the prism columns that each repetition period comprised does not have special restriction.The highest prism columns 271 and minimum prism columns 273 difference in height h are in 50 microns.
As shown in figure 10, the utility model the 4th embodiment concentration piece 28 is a better embodiment, is to be a repetition period with seven prism columns.The drift angle of the prism columns in the repetition period is all 90 °.The peak in a plurality of prism columns in repetition period and the spacing d3 at peak can be respectively 32 microns or 50 microns.Different according to using time, when being used for small-size display, when its base material thickness is 50 microns, peak in the prism columns of arranging in pairs or groups and the spacing d3 at peak be 32 microns; Be used for the large-size display, using base material thickness is more than 125 microns the time, peak in the prism columns of arranging in pairs or groups and the spacing d3 at peak be 50 microns prisms.Difference in height h1 maximum between a plurality of prism columns in repetition period is 10 microns.
As shown in figure 11, a plurality of prism columns 41,42,43 of the utility model concentration piece 40 have under the situation of obvious difference of height, the light 44 of script low angle light leak, can be reflected again by contiguous higher prism columns 42 and reflection recovery again, so make concentration piece 40 have higher luminance gain, and can reduce the ratio of wide-angle light leak.Via the structure that experiment showed, the utility model concentration piece the ability that promotes briliancy, the highest 2% the briliancy that improves of the contour concentration piece luminance gain of more known prism columns are arranged.
White dirty phenomenon when as shown in figure 12, another advantage of the present utility model can solve two blooming collocation.When adopting concentration piece 51 of the present utility model,, the upper strata blooming 52 and the contact area of lower floor's concentration piece 51 are tailed off, and can significantly reduce white dirty phenomenon because a plurality of prism columns of concentration piece 51 have obvious difference of height.
As shown in figure 13, a plurality of prism columns 61,62,63 of the utility model concentration piece 60 another advantages for utilizing height to vary in size make chromatic dispersion angle difference after the light beam split, can alleviate rainbow line phenomenon once more behind the mixed light.
The utility model concentration piece can promote following functions of use:
1. the envelope of many prism columns is the distribution of string wave function, can reduce the quantity that the refraction of light wide-angle is scattered and disappeared, and increases the ratio of recycling light, thereby can improve the briliancy of concentration piece.
2. many prism columns have obvious difference of height, when concentration piece is used for lower floor, even the base material hardness of upper strata blooming is lower, also more can not cause white dirty phenomenon.
3. non-equidistant neat high a plurality of prism columns structures can reduce the generation of Moire fringe.
4. non-equidistant neat high a plurality of prism columns structures can alleviate the phenomenon of color red line.
Above put down in writing, only for utilizing the embodiment of the utility model technology contents, anyly be familiar with modification, the variation that this operator uses the utility model to do, all belong to the claim scope that the utility model is advocated, and be not limited to the content that embodiment discloses.
Claims (10)
1. a prism columns envelope is the concentration piece that the string wave function distributes, and comprising:
One can supply light wear penetrates the base material that passes through;
A plurality of prism columns are located at an end face of this base material;
It is characterized in that: the envelope of the profile of these a plurality of prism columns is the string wave function and distributes.
2. prism columns envelope as claimed in claim 1 is the concentration piece that the string wave function distributes, and it is characterized in that wherein the highest prism columns in these a plurality of prism columns and the difference in height between the minimum prism columns are between 5 microns to 50 microns.
3. prism columns envelope as claimed in claim 2 is the concentration piece that the string wave function distributes, and it is characterized in that wherein the drift angle of these a plurality of prism columns is all 90 °.
4. be the concentration piece that the string wave function distributes as claim 1,2 or 3 described prism columns envelopes, it is characterized in that wherein the spacing at peak in these a plurality of prism columns and peak is equidistant.
5. prism columns envelope as claimed in claim 4 is the concentration piece that the string wave function distributes, and it is characterized in that, wherein these a plurality of prism columns form the shape in a plurality of cycles that just rise and fall.
6. prism columns envelope as claimed in claim 5 is the concentration piece that the string wave function distributes, and it is characterized in that, wherein these a plurality of cycles are to be a repetition period with seven prism columns.
7. prism columns envelope as claimed in claim 6 is the concentration piece that the string wave function distributes, and it is characterized in that, wherein this spacing is wherein a kind of of 32 microns or 50 microns.
8. prism columns envelope as claimed in claim 7 is the concentration piece that the string wave function distributes, and it is characterized in that, wherein should a plurality of prism columns in the repetition period between maximum difference in height be 10 microns.
9. be the concentration piece that the string wave function distributes as claim 1,2 or 3 described prism columns envelopes, it is characterized in that wherein the spacing at peak in these a plurality of prism columns and peak is unequal.
10. prism columns envelope as claimed in claim 9 is the concentration piece that the string wave function distributes, and it is characterized in that, wherein these a plurality of prism columns form the shape in a plurality of cycles that just rise and fall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201815029U CN201368925Y (en) | 2008-12-24 | 2008-12-24 | Condenser of prism envelope line in distribution of string wave function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201815029U CN201368925Y (en) | 2008-12-24 | 2008-12-24 | Condenser of prism envelope line in distribution of string wave function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201368925Y true CN201368925Y (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201815029U Expired - Lifetime CN201368925Y (en) | 2008-12-24 | 2008-12-24 | Condenser of prism envelope line in distribution of string wave function |
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| CN (1) | CN201368925Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570473A (en) * | 2014-12-24 | 2015-04-29 | 宁波东旭成新材料科技有限公司 | Brightness enhancement film |
| CN104819434A (en) * | 2015-04-16 | 2015-08-05 | 宁波江北激智新材料有限公司 | Brightness balance membrane and lighting equipment and display equipment backlight source both adopting brightness balance membrane |
| CN113906338A (en) * | 2020-04-22 | 2022-01-07 | 瑞仪(广州)光电子器件有限公司 | Optical film, backlight module and display device |
-
2008
- 2008-12-24 CN CNU2008201815029U patent/CN201368925Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570473A (en) * | 2014-12-24 | 2015-04-29 | 宁波东旭成新材料科技有限公司 | Brightness enhancement film |
| CN104819434A (en) * | 2015-04-16 | 2015-08-05 | 宁波江北激智新材料有限公司 | Brightness balance membrane and lighting equipment and display equipment backlight source both adopting brightness balance membrane |
| CN113906338A (en) * | 2020-04-22 | 2022-01-07 | 瑞仪(广州)光电子器件有限公司 | Optical film, 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |
|
| CX01 | Expiry of patent term |