CN1716029A - Plane display, liquid crystal module and method for correcting color of plane display - Google Patents
Plane display, liquid crystal module and method for correcting color of plane display Download PDFInfo
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- CN1716029A CN1716029A CN 200510075979 CN200510075979A CN1716029A CN 1716029 A CN1716029 A CN 1716029A CN 200510075979 CN200510075979 CN 200510075979 CN 200510075979 A CN200510075979 A CN 200510075979A CN 1716029 A CN1716029 A CN 1716029A
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- liquid crystal
- converting layer
- color converting
- crystal module
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Abstract
The available plane display with LED as back light source may have yellowed white light. The present invention provides one color converting layer for regulating the color coordinate of plane display. The liquid crystal module in the plane display has one planar light source for image display, and the color converting layer is superposed onto the liquid crystal module to correct the color coordinate of the image. The color converting layer has the first penetration rate of blue light and the second penetration rate of red light in the ratio of 0.5-0.95, and includes one homogeneously distributed light filtering material, which may be organic dye CuPc evaporation coated onto the color converting layer substrate.
Description
Technical field
The present invention relates to the color correction of flat-panel screens, particularly relate to and utilize color converting layer to proofread and correct the effect of the color coordinate drift that causes backlight.
Background technology
(Light Emitting Diode, the white light that is provided during LED) as back light are not perfect white light usually, and for example ruddiness and green intensity are higher, and blue light strength is lower, make white light that the phenomenon of inclined to one side Huang be arranged with light emitting diode in the flat-panel screens now.This effect is called color coordinate drift.
For addressing this problem, existing way is with coloured diffusion barrier, is positioned in the middle of the backlight module.Be illustrated in figure 1 as an existing flat-panel screens 100, comprising light source 108, and a light guide plate 106 these light sources of reception, the coloured diffusion barrier 104 of arranging in pairs or groups utilizes refraction and scattering principle to produce even planar light source, with irradiating liquid crystal module 102.This Liquid Crystal Module 102 itself has designs such as existing liquid crystal pixel and control circuit, sees through the irradiation of this planar light source, promptly forms the being seen picture of human eye.
Yet so way has produced some shortcomings.When module has the situation of any distortion to take place, or during assembly failure, be expressed to diffusion barrier easily, cause the inconvenience in the assembling.When diffusion barrier was attached to other rete, the uneven phenomenon of optics took place in whole front panel easily in addition.
Summary of the invention
The invention provides a kind of flat-panel screens, comprise a backlight module, a Liquid Crystal Module and a color converting layer.This backlight module comprises a light source and a light guide plate at least, in order to conduct this light source, produces a planar light source.The planar light source that is produced sees through Liquid Crystal Module and produces image.And this color converting layer is stacked and placed on this Liquid Crystal Module, in order to proofread and correct the color coordinate drift effect of this image.Wherein this color converting layer has first penetrance to blue light, and red light is had second penetrance.
This color converting layer comprises an equally distributed filter, and this filter can be organic dyestuff CuPc, and can the evaporation mode be attached on this color converting layer.The thickness of this filter or this color converting layer has first linear relationship with this first penetrance, has second linear relationship with this second penetrance.And the ratio range of this first penetrance and this second penetrance is between 0.5 to 1 to 0.95 to 1.
The present invention also provides a kind of Liquid Crystal Module, and show an image in order to utilize a planar light source, and comprise a Polarizer, in order to this planar light source that polarizes, and the color coordinate drift effect of proofreading and correct this image; Wherein this Polarizer has first penetrance to blue light, and red light is had second penetrance.
The present invention also provides a kind of correction with the method for light emitting diode as the chromaticity coordinates of the Liquid Crystal Module of light source, comprises the following steps.At first, measure chromaticity coordinates, measure the chromaticity coordinates of this light emitting diode.Then calculated thickness is calculated a thickness according to this chromaticity coordinates.One color converting layer is provided at last, a color converting layer with this thickness is provided in this flat-panel screens surface.
Description of drawings
Fig. 1 is the rip cutting figure of existing flat-panel screens;
Fig. 2 is the flat-panel screens rip cutting figure of one of embodiment of the invention;
Fig. 3 is the Liquid Crystal Module rip cutting figure of one of embodiment of the invention;
Fig. 4 a is the color converting layer of one of embodiment of the invention;
Fig. 4 b is the color converting layer of one of embodiment of the invention;
Fig. 5 is the CuPc chemical constitution that one of embodiment of the invention adopts; And
Fig. 6 is that the optical wavelength of CuPc is to the transmittance chart.
The simple symbol explanation
100～flat-panel screens, 102～Liquid Crystal Module
104～diffusion barrier, 106～light guide plate
108～light source, 200～flat-panel screens
204～diffusion barrier, 210～color converting layer
300～Liquid Crystal Module, 302～Polarizer
304～liquid crystal gap, 306～Polarizer
308～polarization light, 310～upper substrate
312～infrabasal plate, 402～organic film plating
404～transparency carrier, 406～color converting layer
500～CuPc
Embodiment
As shown in Figure 2, be the representative graph of a flat-panel screens 200, comprise a light source 108, one light guide plate 106, in order to this light source refraction is produced planar light source.And Liquid Crystal Module 102 comprises liquid crystal pixel and control circuit etc., in order to produce picture.Be superimposed with one deck color converting layer 210 of the present invention at last, the color displacement phenomenon of calibration light source 108.Because this rete is positioned at the flat-panel screens outermost layer, so assembling mode is very easy, not being vulnerable to backlight module influences.
In another embodiment, the framework of color converting layer then is implemented in the Liquid Crystal Module.As shown in Figure 3, be the structural representation of a Liquid Crystal Module 300.Mainly comprise upper and lower base plate 310 and 312 and two-layer up and down Polarizer 302 and 306, and middle liquid crystal layer 304.Liquid crystal layer 304 is subjected to the control of electric field, reverses and produce.Polarization light 308 promptly changes angle along with reversing of liquid crystal in the liquid crystal layer 304, produces brightness through the filtration of Polarizer 302 and changes, and forms picture.In this embodiment, one independently color converting layer 210 place the outside of top plate tabula rasa 302, reach the purpose of proofreading and correct the show image color displacement by this.
In the flat-panel screens 200 of Fig. 2, the structure of its color converting layer 210 can comprise a transparency carrier 404 shown in Fig. 4 a, and evaporation one thickness is the organic film plating 402 of d thereon.As for the composition and the thickness of organic film plating 402, then decide on the degree of the photochromic and color shift of required filtration.In another embodiment, the structure of color converting layer also can be in the mode of mixing organic material to be incorporated in the transparency carrier, forms color converting layer 406.Therefore adjust coloured light mode can according to the thickness D of color converting layer 406 and wherein organic material doping content and decide.This transparency carrier then can be a Polarizer.
As shown in Figure 5, be organic material CuPc 500 that one of embodiments of the invention adopted.CuPc (CuPc, Copper (II) phthalocyanine), molecular formula is C
32H
16N
8Cu, by the organic dyestuff that eight N form around Cu, outward appearance is the purple flat crystal, temperature of fusion is greater than 360 degree Celsius.On transparency carrier, (CommissionInternationale de l ' clairage) the X value of chromaticity coordinates presents linear relationship, and to the no remarkable influence of Y value for its thickness and white light C.I.E with CuPc 500 evaporations.According to measured data, the linear formula of the X value of thickness d ( of unit) and C.I.E chromaticity coordinates is as follows:
X＝-0.0002d+0.3465
The Y value of thickness d and C.I.E chromaticity coordinates has following linear approximate relationship:
Y＝-0.00004d+0.3882
Based on 500 pairs of light transmission differences that X and Y presented of CuPc, change the translation adjustment that thickness d can reach chromaticity coordinates.
Fig. 6 is CuPc 500 when practical application, the transmittance chart of the various wavelength light that measured.This material has than high penetration blue light as seen from table, and green glow and ruddiness have than the low penetration mistake.Therefore select the organic material of CuPc 500, again via the thickness of adjusting CuPc 500, the yellow partially phenomenon of white light that adjustment that can be suitable is caused because of light source among Fig. 1 108 as color converting layer.And the transmittance of ruddiness and blue light, after adjusting, ratio range can be between 0.5 to 1 to 0.95 to 1.If this color converting layer is made with doping way, then transmittance can be linear with the thickness and the doping content of color converting layer itself.
Indulge the above, this color converting layer can effectively be adjusted the white color coordinate of flat-panel screens, and can determine thickness via account form, makes optimized adjustment.Color converting layer is because be attached at the flat-panel screens outermost layer in addition, and more convenient in the assembling, this external cause is difficult for sticking so degree of stability is preferable.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; those skilled in the art can do a little change and retouching without departing from the spirit and scope of the present invention, thus protection scope of the present invention should with accompanying Claim the person of being defined be as the criterion.
Claims (19)
1. flat-panel screens comprises:
One Liquid Crystal Module;
One backlight module is in order to provide this Liquid Crystal Module one light source; And
One color converting layer is arranged on this Liquid Crystal Module.
2. flat-panel screens as claimed in claim 1, wherein this color converting layer comprises a filter.
3. flat-panel screens as claimed in claim 2, wherein this filter is the organic dyestuff CuPc, its molecular formula is C
32H
16N
8Cu.
4. flat-panel screens as claimed in claim 1, wherein this color converting layer is an evaporation layer.
5. flat-panel screens as claimed in claim 4, wherein this Liquid Crystal Module comprises a light polarizing film, and this evaporation layer is arranged on this light polarizing film.
6. flat-panel screens as claimed in claim 1, wherein this color converting layer for the penetrance of blue light and ruddiness between 0.5 to 0.95.
7. flat-panel screens as claimed in claim 1, wherein this color converting layer for the penetrance of blue light greater than penetrance for ruddiness.
8. flat-panel screens as claimed in claim 1, wherein this backlight module comprises that a plurality of light emitting diodes are as light source.
9. Liquid Crystal Module comprises:
One first substrate and one second substrate;
One liquid crystal layer is folded in this first substrate and this second substrate;
One light polarizing film is arranged at this first substrate; And
One color converting layer is arranged on this light polarizing film.
10. Liquid Crystal Module as claimed in claim 9, wherein this color converting layer comprises a filter.
11. Liquid Crystal Module as claimed in claim 10, wherein this filter is the organic dyestuff CuPc, and its molecular formula is C
32H
16N
8Cu.
12. Liquid Crystal Module as claimed in claim 9, wherein this color converting layer is an evaporation layer.
13. Liquid Crystal Module as claimed in claim 9, wherein this color converting layer for the penetrance of blue light and ruddiness between 0.5 to 0.95.
14. Liquid Crystal Module as claimed in claim 9, wherein this color converting layer for the penetrance of blue light greater than penetrance for ruddiness.
15. Liquid Crystal Module as claimed in claim 9, wherein this first substrate is a filter sheet base plate.
16. Liquid Crystal Module as claimed in claim 9, wherein this first substrate is plain glass.
17. the method for the color of the flat-panel screens that a correction is light source with the light emitting diode comprises:
Measure chromaticity coordinates, measure the chromaticity coordinates of this light emitting diode;
Calculated thickness is calculated a thickness according to this chromaticity coordinates; And
One color converting layer is provided, a color converting layer with this thickness is provided in this flat-panel screens surface.
18. method as claimed in claim 17, wherein this step that color converting layer is provided is evaporation one phthalocyanine copper film.
19. method as claimed in claim 17, wherein this provides the step of a color converting layer to have the blooming piece of CuPc material for attaching one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510075979XA CN100410758C (en) | 2005-05-27 | 2005-05-27 | Plane display, liquid crystal module and method for correcting color of plane display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510075979XA CN100410758C (en) | 2005-05-27 | 2005-05-27 | Plane display, liquid crystal module and method for correcting color of plane display |
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| Publication Number | Publication Date |
|---|---|
| CN1716029A true CN1716029A (en) | 2006-01-04 |
| CN100410758C CN100410758C (en) | 2008-08-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261332B (en) * | 2007-03-09 | 2011-04-27 | 三星康宁精密素材株式会社 | Optical member and filter for display apparatus having the same |
| CN102163391A (en) * | 2010-12-31 | 2011-08-24 | 友达光电股份有限公司 | Color display |
| CN104765184A (en) * | 2015-02-13 | 2015-07-08 | 厦门天马微电子有限公司 | Liquid crystal display panel |
| CN108172694A (en) * | 2017-12-21 | 2018-06-15 | 昆山维信诺科技有限公司 | A kind of display panel and display device |
| CN111261031A (en) * | 2019-09-24 | 2020-06-09 | 友达光电股份有限公司 | Display device and method for manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104212463B (en) | 2013-05-31 | 2016-03-16 | 京东方科技集团股份有限公司 | Orientation and smoothing material composition, display unit and Show Color inflation method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001124915A (en) * | 1999-10-26 | 2001-05-11 | Toppan Printing Co Ltd | Color composition for color filter, color filter and color liquid crystal display |
| JP2002372616A (en) * | 2001-06-14 | 2002-12-26 | Toppan Printing Co Ltd | Green colored composition for color filter and color filter using the same |
| JP2003149632A (en) * | 2001-11-12 | 2003-05-21 | Dainippon Printing Co Ltd | Liquid crystal display device and color filter therefor |
| JP4368157B2 (en) * | 2002-07-24 | 2009-11-18 | 大日本印刷株式会社 | Green pigment for color filter, green pigment dispersion, photosensitive coloring composition, color filter, and liquid crystal panel |
| CN100365446C (en) * | 2002-11-06 | 2008-01-30 | 普立尔科技股份有限公司 | Method for manufacturing color separation film |
-
2005
- 2005-05-27 CN CNB200510075979XA patent/CN100410758C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261332B (en) * | 2007-03-09 | 2011-04-27 | 三星康宁精密素材株式会社 | Optical member and filter for display apparatus having the same |
| CN102163391A (en) * | 2010-12-31 | 2011-08-24 | 友达光电股份有限公司 | Color display |
| CN102163391B (en) * | 2010-12-31 | 2013-06-19 | 友达光电股份有限公司 | Color display |
| CN104765184A (en) * | 2015-02-13 | 2015-07-08 | 厦门天马微电子有限公司 | Liquid crystal display panel |
| CN104765184B (en) * | 2015-02-13 | 2018-09-04 | 厦门天马微电子有限公司 | Liquid crystal display panel |
| CN108172694A (en) * | 2017-12-21 | 2018-06-15 | 昆山维信诺科技有限公司 | A kind of display panel and display device |
| CN108172694B (en) * | 2017-12-21 | 2020-01-14 | 昆山维信诺科技有限公司 | Display panel and display device |
| CN111261031A (en) * | 2019-09-24 | 2020-06-09 | 友达光电股份有限公司 | Display device and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100410758C (en) | 2008-08-13 |
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