CN101308283A - Colorful filtering substrate and LCD device using same - Google Patents
Colorful filtering substrate and LCD device using same Download PDFInfo
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- CN101308283A CN101308283A CNA2008101339099A CN200810133909A CN101308283A CN 101308283 A CN101308283 A CN 101308283A CN A2008101339099 A CNA2008101339099 A CN A2008101339099A CN 200810133909 A CN200810133909 A CN 200810133909A CN 101308283 A CN101308283 A CN 101308283A
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Abstract
Disclosed are a color filter substrate and a liquid crystal display which uses the color filter substrate; wherein, the color filter substrate comprises a plurality of green photo-resistors. G (lambda) stands for the penetration spectrum of the green photo-resistors; CMF_x (lambda) stands for the color matching function formulated by the International Commission on Illumination; wherein, the maximum value of G (lambda) multiplying CMF_x (lambda) within the wavelength of 450 to 510 nanometers is M1, while the maximum value of G (lambda) multiplying CMF_x (lambda) within the wavelength of 550 to 590 nanometers is M2; the ratio of M1 to M2 is less than or equal to 0.04, while the peak FWHM of G (lambda) is D which is less than or equal to 90 nanometers. The invention can improve LCD color saturation.
Description
Technical field
The present invention is relevant for a kind of display device; Be particularly to a kind of LCD and colored optical filtering substrates thereof.
Background technology
Along with the progress of plane display technique add flat-panel screens have in light weight, volume is little and advantage such as power saving, flat-panel screens is more and more universal.Common flat-panel screens has LCD (LiquidCrystal Display, LCD), plasma scope (Plasma Display Panel, PDP), organic light emitting diode display (Organic Light Emitting Diode Display, OLED Display) and electrophoretic display device (EPD) (Electrophoretic Display, EPD) etc., wherein the popularity rate with LCD is the highest again.
LCD comprises display panels (LCD panel) and backlight module (BacklightModule), and wherein backlight module can provide planar light to display panels.In addition, the colored optical filtering substrates of display panels is the critical elements with the planar light colorize.
Because LCD is gradually towards the trend development of high color saturation (Color Saturation), support the LCD of sRGB color space (Color Space) can't satisfy the demand of professional person, therefore develop the LCD that support Adobe rgb color space color.
Yet, in the prior art, support the light source of its backlight module of LCD of Adobe rgb color space to be all light emitting diode (Light Emitting Diode, LED), if light emitting diode is changed into cathode fluorescent tube (the Hi-Color Cold Cathode Fluorescent Lamp of high color, Hi-Color CCFL), then can't contain the Adobe rgb color space fully.
Fig. 1 has illustrated existing a kind of LCD of cathode fluorescent tube of using at International Commission on Illumination (Commission Internationale de L ' Eclairage, CIE) color space and the Adobe rgb color space in the chromatic diagram of being worked out in 1931 (CIE 1931 Chromaticity Diagram).Please refer to Fig. 1, the space in the triangle 50 is the Adobe rgb color space, and the space in the triangle 60 is existing a kind of color space that uses the LCD of cathode fluorescent tube.As can be seen from Figure 1, use the color space of the LCD of existing cathode fluorescent tube can't contain the Adobe rgb color space fully, especially in the part of region R 1 (being green area) with region R 2 (being blue region).
Summary of the invention
The object of the present invention is to provide a kind of colored optical filtering substrates, to promote the color saturation of LCD.
Another object of the present invention is to provide a kind of LCD, it has the advantage of high color saturation.
For reaching above-mentioned purpose, the present invention proposes a kind of colored optical filtering substrates, and it has a plurality of green photoresistances.G (λ) is the frequency spectrum that penetrates of green photoresistance, CMF_x (λ) is the color matching function (Color Matching Function) that International Commission on Illumination worked out, wherein G (the λ) * maximal value of CMF_x (λ) between wavelength 450 nanometers (nanometer) and 510 nanometers is M1, G (the λ) * maximal value of CMF_x (λ) between wavelength 550 nanometers and 590 nanometers is M2, and the ratio of M1 and M2 is less than or equal to 0.04, and the halfwidth of the crest of G (λ) (Full Width at Half Maximum, FWHM) be D, and D is less than or equal to 90 nanometers.
In an embodiment of the present invention, the ratio of M1 and M2 is less than or equal to 0.03.
In an embodiment of the present invention, the material of above-mentioned each green photoresistance comprises color index (ColorIndex) green 36 and color index Huang 150.
In an embodiment of the present invention, the material of above-mentioned each green photoresistance comprise that color index is green 36, color index yellow 150 and color index Huang 139.
In an embodiment of the present invention, above-mentioned colored optical filtering substrates also has a plurality of blue photoresistances and a plurality of red photoresistance.
For reaching above-mentioned purpose, the present invention also proposes a kind of LCD, and it comprises display panels and backlight module.Display panels has colored optical filtering substrates, and this colored optical filtering substrates has a plurality of green photoresistances.G (λ) is the frequency spectrum that penetrates of green photoresistance, CMF_x (λ) is the color matching function that International Commission on Illumination worked out, wherein G (the λ) * maximal value of CMF_x (λ) between wavelength 450 nanometers and 510 nanometers is M1, G (the λ) * maximal value of CMF_x (λ) between wavelength 550 nanometers and 590 nanometers is M2, and the ratio of M1 and M2 is less than or equal to 0.04, and the halfwidth of the crest of G (λ) is D, and D is less than or equal to 90 nanometers.In addition, backlight module is disposed at by the display panels, to provide planar light to display panels, the luminous frequency spectrum of the planar light that this backlight module sends has a relative maximum between wavelength 505 nanometers and 525 nanometers, and the luminous frequency spectrum of planar light has another relative maximum between wavelength 540 nanometers and 550 nanometers.
In an embodiment of the present invention, the ratio of M1 and M2 is less than or equal to 0.03.
In an embodiment of the present invention, the material of above-mentioned each green photoresistance comprises color index green 36 and color index Huang 150.
In an embodiment of the present invention, the material of above-mentioned each green photoresistance comprise that color index is green 36, color index yellow 150 and color index Huang 139.
In an embodiment of the present invention, above-mentioned colored optical filtering substrates also has a plurality of blue photoresistances and a plurality of red photoresistance.
In an embodiment of the present invention, the shown green of above-mentioned display panels corresponds to x coordinate and the y seat target value of International Commission on Illumination in the chromatic diagram of being worked out in 1931 and is respectively Gx and Gy, wherein Gy 〉=0.71, and 0.1 * Gy+0.15 〉=Gx 〉=(1.13) * Gy+1.
In an embodiment of the present invention, above-mentioned backlight module comprises at least one cathode fluorescent tube.
In colored optical filtering substrates of the present invention, be less than or equal to 90 nanometers owing to limit halfwidth D, and the ratio of M1 and M2 is less than or equal to 0.04, so can promote the color saturation of LCD.Therefore, use the LCD of this colored optical filtering substrates to have higher color saturation.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended accompanying drawing, be described in detail below.
Description of drawings
Fig. 1 show existing a kind of LCD of using cathode fluorescent tube in International Commission on Illumination color space and the Adobe rgb color space in the chromatic diagram of being worked out in 1931.
Fig. 2 is the synoptic diagram of the embodiment of LCD of the present invention.
Fig. 3 is the synoptic diagram of the colored optical filtering substrates of display panels among Fig. 2.
Fig. 4 shows the frequency spectrum that penetrates that penetrates frequency spectrum and existing two kinds of green spectral of color matching function and three kinds of green photoresistances of the present invention.
Fig. 5 shows the value of G (the λ) * CMF_x (λ) of various green photoresistances among Fig. 4.
Fig. 6 show the LCD of using various green photoresistances among Fig. 4 International Commission on Illumination in the chromatic diagram of being worked out in 1931 the local color space and the part of Adobe rgb color space.
Wherein, description of reference numerals is as follows:
50,60: triangle
100: LCD
200: backlight module
202: planar light
210: light source
300: display panels
310: colored optical filtering substrates
312: substrate
314b: blue photoresistance
314g: green photoresistance
314r: red photoresistance
320: active elements array substrates
330: liquid crystal layer
Embodiment
Fig. 2 is the synoptic diagram of the embodiment of LCD of the present invention; Fig. 3 is the synoptic diagram of the colored optical filtering substrates of display panels among Fig. 2.Please refer to Fig. 2 and Fig. 3, LCD 100 comprises backlight module 200 and display panels 300, and it is other that wherein backlight module 200 is disposed at display panels 300, to provide planar light 202 to display panels 300.Backlight module 200 shown in Fig. 2 is a kind of side incident type backlight modules, and its light source 210 can be cathode fluorescent tube, but not as limit.In addition, backlight module 200 also can be direct type backlight module.In addition, display panels 300 can comprise colored optical filtering substrates 310, active elements array substrates 320 (as thin-film transistor array base-plate) and be disposed at colored optical filtering substrates 310 and active elements array substrates 320 between liquid crystal layer 330.
Colored optical filtering substrates 310 comprises substrate 312 and is disposed at a plurality of chromatic photoresists (as green photoresistance 314g, red photoresistance 314r and blue photoresistance 314b) on the substrate 312.In addition, the frequency spectrum that penetrates of green photoresistance 314g is G (λ), and the color matching function that International Commission on Illumination worked out is CMF_x (λ), and wherein λ is a wavelength.G (λ) * CMF_x (λ) maximal value between rice and 510 nanometers in wavelength 450 is M1, and G (λ) * maximal value of CMF_x (λ) between wavelength 550 nanometers and 590 nanometers is M2, and the halfwidth of the crest of G (λ) is D.In order to promote the color saturation of LCD 100, the ratio that the green photoresistance 314g of present embodiment need meet following condition: M1 and M2 is less than or equal to 0.04, and D is less than or equal to 90 nanometers.In a preferred embodiment, the ratio of M1 and M2 is less than or equal to 0.03.
In the LCD 100, colored optical filtering substrates 310 also can be integrated into the active elements array substrates 320 (array base palte (Color Filter On Array Substrate, COASubstrate)) that promptly has color filter film.The luminous frequency spectrum of the planar light 202 that backlight module 200 is provided has a relative maximum between wavelength 505 nanometers and 525 nanometers, and the luminous frequency spectrum of planar light 202 has another relative maximum between wavelength 540 nanometers and 550 nanometers.
Fig. 4 shows the frequency spectrum that penetrates that penetrates frequency spectrum and existing two kinds of green spectral of color matching function and three kinds of green photoresistances of the present invention.In Fig. 4, G (λ)-P1 and G (λ)-P2 are the frequency spectrum that penetrates of existing two kinds of green photoresistances, and its halfwidth is respectively 98.4 nanometers and 88.7 nanometers.G (λ)-E1 be first embodiment of the invention green photoresistance 314g penetrate frequency spectrum, its halfwidth is 86.3 nanometers, and the material of this green photoresistance 314g comprises color index green 36 and color index Huang 150.G (λ)-E2 be second embodiment of the invention green photoresistance 314g penetrate frequency spectrum, its halfwidth is 67.7 nanometers, and the material of this green photoresistance 314g comprises that color index is green 36, color index yellow 150 and color index Huang 139.G (λ)-E3 be third embodiment of the invention green photoresistance 314g penetrate frequency spectrum, its halfwidth is 64.4 nanometers.The material of this green photoresistance 314g comprises that color index is green 36, color index yellow 150 and color index Huang 139.
Compared with prior art, because the halfwidth that penetrates frequency spectrum less (all less than 90 nanometers) of the green photoresistance 314g of various embodiments of the present invention, so can promote the color saturation of LCD 100.In addition, compared to prior art, because the frequency spectrum that penetrates of the green photoresistance 314g of various embodiments of the present invention is to move toward the right-hand of Fig. 4, so can make LCD 100 can support the Adobe rgb color space.
Fig. 5 shows the value of G (the λ) * CMF_x (λ) of various green photoresistances among Fig. 4.In Fig. 5, G (λ)-E1 * CMF_x (λ), G (λ)-E2 * CMF_x (λ), G (λ)-E3 * CMF_x (λ), the maximal value (be M2) of G (λ)-P1 * CMF_x (λ) and G (λ)-P2 * CMF_x (λ) between wavelength 550 nanometers and 590 nanometers all is about 1, and the maximal value (be M1) of G (λ)-P1 * CMF_x (λ) and G (λ)-P2 * CMF_x (λ) between wavelength 450 nanometers and 510 nanometers be greater than 0.04, and G (λ)-E1 * CMF_x (λ), G (λ)-E2 * CMF_x (λ), the maximal value (be M1) of G (λ)-E3 * CMF_x (λ) between wavelength 450 nanometers and 510 nanometers is all less than 0.03.Therefore, the green photoresistance 314g of various embodiments of the present invention can meet M1/M2≤0.04, helps to weaken the penetrance of short wavelength light like this, and then promotes the color saturation of LCD 100 and can support the Adobe rgb color space.
Fig. 6 show the LCD of using various green photoresistances among Fig. 4 International Commission on Illumination in the chromatic diagram of being worked out in 1931 the local color space and the part of Adobe rgb color space.In Fig. 6, G-E1 is the color space of the LCD 100 of the green photoresistance 314g of use first embodiment of the invention, its green coordinate, and promptly (Gx Gy), is (0.208,0.708).G-E2 is the color space of the LCD 100 of the green photoresistance 314g of use second embodiment of the invention, and its green coordinate is (0.208,0.713).G-E3 is the color space of the LCD 100 of the green photoresistance 314g of use third embodiment of the invention, and its green coordinate is (0.209,0.711).G-P1 is the color space of the LCD of the existing a kind of green photoresistance of use, and its green coordinate is (0.209,0.685).G-P2 is the color space of the LCD of the green photoresistance of the existing another kind of use, and its green coordinate is (0.192,0.712).In addition, the green coordinate of Adobe rgb color space is (0.210,0.710).
As seen from Figure 6, compared with prior art, the color space of the LCD 100 of the green photoresistance 114g of use various embodiments of the present invention can be contained the Adobe rgb color space at least haply.Therefore, LCD 100 can use cathode fluorescent tube to support the Adobe rgb color space under as the situation of light source 210 really.
In sum, in the colored optical filtering substrates of the present invention, be less than or equal to 90 nanometers, and the ratio of M1 and M2 is less than or equal to 0.04, so can promote the color saturation of LCD owing to limit halfwidth D.Therefore, use the LCD of this colored optical filtering substrates to have higher color saturation.In addition, use the LCD of this colored optical filtering substrates to support the Adobe rgb color space under with the situation of cathode fluorescent tube as light source.
Though the present invention with preferred embodiment openly as above; right its is not in order to restriction the present invention; those skilled in the art without departing from the spirit and scope of the present invention; when can doing a little change and modification, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.
Claims (12)
1. colored optical filtering substrates comprises:
A plurality of green photoresistances, and G (λ) is the frequency spectrum that penetrates of those green photoresistances, CMF_x (λ) is a color matching function, wherein G (the λ) * maximal value of CMF_x (λ) between wavelength 450 nanometers and 510 nanometers is M1, G (the λ) * maximal value of CMF_x (λ) between wavelength 550 nanometers and 590 nanometers is M2, and the ratio of M1 and M2 is less than or equal to 0.04, and the halfwidth of the crest of G (λ) is D, and D is less than or equal to 90 nanometers.
2. colored optical filtering substrates as claimed in claim 1, wherein the ratio of M1 and M2 is less than or equal to 0.03.
3. colored optical filtering substrates as claimed in claim 1, wherein the material of each green photoresistance comprises color index green 36 and color index Huang 150.
4. colored optical filtering substrates as claimed in claim 1, wherein the material of each green photoresistance comprise that color index is green 36, color index yellow 150 and color index Huang 139.
5. colored optical filtering substrates as claimed in claim 1 also has a plurality of blue photoresistances and a plurality of red photoresistance.
6. LCD comprises:
Display panels, it has colored optical filtering substrates, this colored optical filtering substrates has a plurality of green photoresistances, G (λ) is the frequency spectrum that penetrates of described a plurality of green photoresistances, CMF_x (λ) is a color matching function, wherein G (the λ) * maximal value of CMF_x (λ) between wavelength 450 nanometers and 510 nanometers is M1, G (the λ) * maximal value of CMF_x (λ) between wavelength 550 nanometers and 590 nanometers is M2, and the ratio of M1 and M2 is less than or equal to 0.04, and the halfwidth of the crest of G (λ) is D, and D is less than or equal to 90 nanometers; And
Backlight module, be disposed at by this display panels, to provide planar light to this display panels, wherein the luminous frequency spectrum of this planar light has a relative maximum between wavelength 505 nanometers and 525 nanometers, and the luminous frequency spectrum of this planar light has another relative maximum between wavelength 540 nanometers and 550 nanometers.
7. LCD as claimed in claim 6, wherein the ratio of M1 and M2 is less than or equal to 0.03.
8. LCD as claimed in claim 6, wherein the material of each green photoresistance comprises color index green 36 and color index Huang 150.
9. LCD as claimed in claim 6, wherein the material of each green photoresistance comprise that color index is green 36, color index yellow 150 and color index Huang 139.
10. LCD as claimed in claim 6, wherein this colored optical filtering substrates also has a plurality of blue photoresistances and a plurality of red photoresistance.
11. LCD as claimed in claim 6, wherein the shown green of this display panels corresponds to x coordinate in the chromatic diagram and y and sits target value and be respectively Gx and Gy, wherein Gy 〉=0.71, and 0.1 * Gy+0.15 〉=Gx 〉=(1.13) * Gy+1.
12. LCD as claimed in claim 6, wherein this backlight module has at least one cathode fluorescent tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2008101339099A CN100568068C (en) | 2008-07-15 | 2008-07-15 | Colored optical filtering substrates and use the LCD of this colored optical filtering substrates |
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| CNB2008101339099A CN100568068C (en) | 2008-07-15 | 2008-07-15 | Colored optical filtering substrates and use the LCD of this colored optical filtering substrates |
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| CN101308283A true CN101308283A (en) | 2008-11-19 |
| CN100568068C CN100568068C (en) | 2009-12-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565906A (en) * | 2011-11-17 | 2012-07-11 | 友达光电股份有限公司 | Color Filter And Liquid Crystal Display |
| CN102866446A (en) * | 2012-08-15 | 2013-01-09 | 友达光电股份有限公司 | Optical touch display device and color filter thereof |
| CN103149728A (en) * | 2012-11-20 | 2013-06-12 | 友达光电股份有限公司 | Display device and color filter substrate |
-
2008
- 2008-07-15 CN CNB2008101339099A patent/CN100568068C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565906A (en) * | 2011-11-17 | 2012-07-11 | 友达光电股份有限公司 | Color Filter And Liquid Crystal Display |
| CN102565906B (en) * | 2011-11-17 | 2014-01-08 | 友达光电股份有限公司 | Color Filter And Liquid Crystal Display |
| CN102866446A (en) * | 2012-08-15 | 2013-01-09 | 友达光电股份有限公司 | Optical touch display device and color filter thereof |
| CN102866446B (en) * | 2012-08-15 | 2015-05-06 | 友达光电股份有限公司 | Optical touch display device and color filter thereof |
| CN103149728A (en) * | 2012-11-20 | 2013-06-12 | 友达光电股份有限公司 | Display device and color filter substrate |
| CN103149728B (en) * | 2012-11-20 | 2016-02-24 | 友达光电股份有限公司 | Display device and color filter substrate |
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| Publication number | Publication date |
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| CN100568068C (en) | 2009-12-09 |
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