CN101403831B - Display apparatus and its method for regulating color resistance of color filter - Google Patents
Display apparatus and its method for regulating color resistance of color filter Download PDFInfo
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Abstract
The invention relates to a method for regulating the color resistance of a color filter and a display device using the method. The method comprises that a white light emitting diode is supplied to emit light with the wavelength of lambda i so as to be provided with lighting frequency spectrum (BL lambda i); a color filter is supplied and comprises a plurality of red color resistances, green colorresistances and blue color resistances as well as has penetration frequency (CF lambda i); the paint composition or concentration of the red color resistance is regulated so as to improve the penetration efficiency of the wavelength lambdai in the range between 580 nanometers and 600 nanometers; the paint composition or concentration of the green resistance is regulated so as to improve the penetration efficiency of the wavelength lambda i in the range between 570 nanometers and 590 nanometers. The display device of the invention and the method for regulating the color resistance of a color filter can improve the color presentation of displayed pictures so that the chrominance of the displayed pictures can reach standard specification.
Description
Technical field
The present invention relates to the method for a kind of display device and adjustment colored filter substrate filter layer thereof, and be particularly related to a kind of method that has the display device of white light emitting diode backlight module and adjust the colored filter substrate filter layer.
Background technology
Technology at light emitting diode (LED) is more and more ripe, and have under the situation of advantages such as power saving, volume be little, light emitting diode is applied in the backlight liquid crystal display module gradually, use as backlight, so that LCD can be more frivolous, and the encapsulation process when making can be more easy.
Using under the situation of white light LEDs as backlight, adding after green and the red fluorescence powder, can send white light source because white light LEDs is a nude film by blue-ray LED; Therefore; with the display of white light LEDs as backlight; its color representation usually can be different with the display that uses cold cathode fluorescent lamp (CCFL), and its shown color of coming out also can be not as expection or not too natural, even can can't reach general international standard specifications such as sRGB or EBU.In CIE 1931 chromaticity coordinates, with the display of white light LEDs as backlight, green fluorescence green, blueness partially problems such as indigo plant and redness be too red inadequately may take place in its shown color of coming out.
Summary of the invention
The objective of the invention is is providing a kind of display device, so as to improving the color representation of its shown picture, makes the colourity of display frame can meet general international standard specifications such as sRGB or EBU.
Another object of the present invention provides in a kind of display device the method for adjusting the colored filter substrate filter layer, improves the undesirable problems of color such as red in the display frame of display device, green and blueness so as to correction.
A technical scheme of the present invention relates to a kind of display device, comprises a white light emitting diode and a colored filter substrate.White light emitting diode is in order to sending the light that wavelength is λ i, and has a luminous frequency spectrum BL (λ i).Colored filter substrate is corresponding to the white light emitting diode setting, and comprises a plurality of red filter layer, a plurality of green filter layer and a plurality of blue color filter layer, and colored filter substrate has one and penetrates frequency spectrum CF (λ i).Wherein, luminous frequency spectrum BL (λ i) with penetrate frequency spectrum CF (λ i) and satisfy following particular kind of relationship:
Y(λi)＝CF(λi)×BL(λi)，λi＝λ1；
MAX(λi)＝MAX[CF(λi)×BL(λi)]，λi＝λ2；
0.20≤Y(λ1)/MAX(λ2)≤1；
Wherein, the scope of wavelength X 1 is between 590 nanometers (nm) and 600 nanometers (nm), Y (λ 1) is for penetrating the product of frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1), and MAX (λ 2) is for penetrating the maximum product of frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2).
Another technical scheme of the present invention relates to a kind of method of adjusting the colored filter substrate filter layer, comprises: provide a white light emitting diode, and to make it send wavelength be that the light of λ i has a luminous frequency spectrum BL (λ i); One colored filter substrate is provided, and it comprises a plurality of red filter layer, a plurality of green filter layer and a plurality of blue color filter layer, and has one and penetrate frequency spectrum CF (λ i); Adjust the pigment of above-mentioned red filter layer and form or concentration, to improve its penetrance when the scope of wavelength X i is between 580 nanometers (nm) and 600 nanometers (nm); And the pigment of adjusting above-mentioned green filter layer forms or concentration, to improve its penetrance when the scope of wavelength X i is between 570 nanometers (nm) and 590 nanometers (nm).
Another technical scheme of the present invention relates to a kind of display device, comprises a white light emitting diode and a colored filter substrate.White light emitting diode is in order to sending the light that wavelength is λ i, and has a luminous frequency spectrum BL (λ i).Colored filter substrate is corresponding to the white light emitting diode setting, and comprises a plurality of red filter layer, a plurality of green filter layer and a plurality of blue color filter layer.Wherein, above-mentioned red filter layer has the pigment that can improve its penetrance when the scope of wavelength X i is between 580 nanometers (nm) and 600 nanometers (nm) to be formed or concentration, and above-mentioned green filter layer has the pigment composition or the concentration that can improve its penetrance when the scope of wavelength X i is between 570 nanometers (nm) and 590 nanometers (nm).
According to technology contents of the present invention, the application of aforementioned display device reaches the method for wherein adjusting the colored filter substrate filter layer, can promote the color representation in the display frame, makes the colourity of display frame reach codes and standards.
Description of drawings
Fig. 1 illustrates a kind of synoptic diagram of display device for embodiments of the invention.
Fig. 2 a is that first embodiment of the invention illustrates before a kind of filter layer adjustment and the comparison synoptic diagram of adjusted Y (λ 1) and MAX (λ 2).
Fig. 2 b is that second embodiment of the invention illustrates before a kind of filter layer adjustment and the comparison synoptic diagram of adjusted Y (λ 1) and MAX (λ 2).
Fig. 2 c is that third embodiment of the invention illustrates before a kind of filter layer adjustment and the comparison synoptic diagram of adjusted Y (λ 1) and MAX (λ 2).
Fig. 3 a-Fig. 3 c is that the embodiment of the invention illustrates before a kind of filter layer and the backlight adjustment and the comparison synoptic diagram of filter layer and adjusted Y of backlight (λ 1) and MAX (λ 2).
Fig. 4 a-Fig. 4 c is the synoptic diagram that the embodiment of the invention illustrates the adjusted Y of filter layer (λ 1) and MAX (λ 2) in a kind of large-scale display device.
Fig. 5 is a kind of process flow diagram of adjusting the method for colored filter substrate filter layer for the embodiment of the invention illustrates.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
100: display device
102: backlight module
104: colored filter substrate
106: the matrix array substrate
110,112: Polarizer
114: filter layer
116: pixel
120: display panels
500～512: step
Embodiment
Fig. 1 is the synoptic diagram of display device of the present invention.Display device 100 comprises a backlight module 102, Polarizer 110 and 112, an one matrix array substrate 106 and a colored filter substrate 104, wherein backlight module 102 comprises white light emitting diode (LED) (not shown), and with white light that it was sent as backlight, matrix array substrate 106 then is to correspond to backlight module 102 and white light emitting diode setting wherein with colored filter substrate 104, and constitute a display panels 120 jointly, and matrix array substrate 106 is provided with a plurality of pixels 116, then be provided with redness on the colored filter substrate 104, green and blue color filter layer (or claim filter layer) 114 corresponds respectively to the pixel 116 of matrix array substrate 106.When the white light source that white light emitting diode sent,, just can be converted into the coloured light of corresponding color according to this through after redness, green and the blue color filter layer 114 of colored filter substrate 104.Along with the change of polarizing angle, and the light of each varying strength after the colour mixture addition, just can show different colors and brightness via colored filter substrate 104.
White light emitting diode in the backlight module 102 is in order to send the light that wavelength is λ i, and it has a luminous frequency spectrum BL (λ i); Colored filter substrate 104 then has one and penetrates frequency spectrum CF (λ i).In a preferred embodiment, the pigment of redness, green and blue color filter layer 114 composition or concentration be should give adjustment on the colored filter substrate 104, until satisfying following particular kind of relationship:
Y(λi)＝CF(λi)×BL(λi)，λi＝λ1；
MAX(λi)＝MAX[CF(λi)×BL(λi)]，λi＝λ2；
0.20≤Y(λ1)/MAX(λ2)≤1；
Wherein, the scope of wavelength X 1 can be between 590 nanometers (nm) and 600 nanometers (nm), wavelength X 2 can be red light, blue light or green light wavelength, Y (λ 1) is defined as the product that penetrates frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1), and MAX (λ 2) is defined as the maximum product that penetrates frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2).
Following will specifically describing with several embodiment, according to different optical bands and penetrate after the colored filter substrate 104, luminous frequency spectrum BL (λ i) and penetrate corresponding particular kind of relationship between the frequency spectrum CF (λ i).
First embodiment:
In the present embodiment, the luminous frequency spectrum BL (λ i) of white light emitting diode has the brightness peak of relative maximum when wavelength X i is between 430 nanometers (nm) and 470 nanometers (nm), between 490 nanometers (nm) and 570 nanometers (nm) and between 600 nanometers (nm) and 680 nanometers (nm); Wavelength X 1 can be 595 nanometers (nm); The scope of wavelength X 2 can be between 620 nanometers (nm) and 680 nanometers (nm) (in the red light wave band).At this moment, luminous frequency spectrum BL (λ i) can with penetrate frequency spectrum CF (λ i) and satisfy following particular kind of relationship:
Y(λ1)＝CF(λ1)×BL(λ1)；
MAX(λ2)＝MAX[CF(λ2)×BL(λ2)]；
0.55≤Y(λ1)/MAX(λ2)≤1；
Also be, penetrate frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1) the product Y (λ 1) when wavelength X 1 is 595 nanometers (nm), be Y (595), and penetrating frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) at wavelength X 2 maximum product MAX (λ 2) when (in the red light wave band) between 620 nanometers (nm) and 680 nanometers (nm), both ratio can be between 0.55 and 1.In another embodiment, under above-mentioned identical situation, both ratio even can be between 0.65 and 1.
Fig. 2 a is adjusted display device 100 of filter layer of the present invention and the preceding display device of known technology filter layer adjustment, the comparison synoptic diagram of its Y (595) and MAX (λ 2).Wherein, transverse axis is spectral wavelength (unit is a nanometer), the longitudinal axis then is nondimensional Y (λ i)/MAX (λ i) ratio, dotted portion is the situation before filter layer is adjusted, the solid line part then is the adjusted situation of filter layer, MAXR represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the red light wave band) between 620 nanometers (nm) and 680 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).
By Fig. 2 a as can be known, form or concentration, make red and green Huang or light partially partially, can improve the value of Y (595), make Y (595) and the ratio of MAXR satisfy the relation of 0.55≤Y (595)/MAXR≤1 by the pigment of adjusting redness, green.
In addition, for the purpose of analyzing for convenience, Fig. 2 a and following comparison synoptic diagram about Y (λ 1) and the proportional relation of MAX (λ 2) all are that the single value with MAX (λ 2) is the shown relatively synoptic diagram of benchmark (its value is decided to be 1), also are the comparison synoptic diagram after the standardization.
Second embodiment:
In the present embodiment, the luminous frequency spectrum BL (λ i) of white light emitting diode has the brightness peak of relative maximum when wavelength X i is between 430 nanometers (nm) and 470 nanometers (nm), between 490 nanometers (nm) and 570 nanometers (nm) and between 600 nanometers (nm) and 680 nanometers (nm); Wavelength X 1 can be 595 nanometers; The scope of wavelength X 2 can be between 490 nanometers (nm) and 570 nanometers (nm) (in the green light wave band).At this moment, luminous frequency spectrum BL (λ i) can with penetrate frequency spectrum CF (λ i) and satisfy following particular kind of relationship:
Y(λ1)＝CF(λ1)×BL(λ1)；
MAX(λ2)＝MAX[CF(λ2)×BL(λ2)]；
0.55≤Y(λ1)/MAX(λ2)≤1；
Also be, penetrate frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1) the product Y (λ 1) when wavelength X 1 is 595 nanometers (nm), be Y (595), and penetrating frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) at wavelength X 2 maximum product MAX (λ 2) when (in the green light wave band) between 490 nanometers (nm) and 570 nanometers (nm), both ratio can be between 0.55 and 1.In another embodiment, under above-mentioned identical situation, both ratio even can be between 0.7 and 1.
Fig. 2 b is adjusted display device 100 of filter layer of the present invention and the preceding display device of known technology filter layer adjustment, the comparison synoptic diagram of its Y (595) and MAX (λ 2).Wherein, transverse axis is spectral wavelength (unit is a nanometer), the longitudinal axis then is nondimensional Y (λ i)/MAX (λ i) ratio, dotted portion is the situation before filter layer is adjusted, solid line then is the adjusted situation of filter layer, MAXG represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the green light wave band) between 490 nanometers (nm) and 570 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).
By Fig. 2 b as can be known, form or concentration, make red and green Huang or light partially partially, can improve the value of Y (595), make Y (595) and the ratio of MAXG satisfy the relation of 0.55≤Y (595)/MAXG≤1 by the pigment of adjusting redness, green.
The 3rd embodiment:
In the present embodiment, the WHITE TONE scope of display device is between 5, and 000K and 8 is in the time of between the 500K; The luminous frequency spectrum BL (λ i) of white light emitting diode has the brightness peak of relative maximum when wavelength X i is between 430 nanometers (nm) and 470 nanometers (nm), between 490 nanometers (nm) and 570 nanometers (nm) and between 600 nanometers (nm) and 680 nanometers (nm); Wavelength X 1 can be 595 nanometers (nm); The scope of wavelength X 2 can be between 430 nanometers (nm) and 470 nanometers (nm) (in the blue light wave band).At this moment, luminous frequency spectrum BL (λ i) can with penetrate frequency spectrum CF (λ i) and satisfy following particular kind of relationship:
Y(λ1)＝CF(λ1)×BL(λ1)；
MAX(λ2)＝MAX[CF(λ2)×BL(λ2)]；
0.25≤Y(λ1)/MAX(λ2)≤1；
Also be, penetrate frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1) the product Y (λ 1) when wavelength X 1 is 595 nanometers (nm), be Y (595), and penetrating frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) at wavelength X 2 maximum product MAX (λ 2) when (in the blue light wave band) between 430 nanometers (nm) and 470 nanometers (nm), both ratio can be between 0.25 and 1.In another embodiment, under above-mentioned identical situation, both ratio even can be between 0.3 and 1.
Fig. 2 c is adjusted display device 100 of filter layer of the present invention and the preceding display device of known technology filter layer adjustment, the comparison synoptic diagram of its Y (595) and MAX (λ 2).Wherein, transverse axis is spectral wavelength (unit is a nanometer), the longitudinal axis then is nondimensional Y (λ i)/MAX (λ i) ratio, dotted portion is the situation before filter layer is adjusted, solid line then is the adjusted situation of filter layer, MAXB represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the blue light wave band) between 430 nanometers (nm) and 470 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).
By Fig. 2 c as can be known, form or concentration, make red and green Huang or light partially partially, can improve the value of Y (595), make Y (595) and the ratio of MAXB satisfy the relation of 0.25≤Y (595)/MAXB≤1 by the pigment of adjusting redness, green.
The 4th embodiment:
In the present embodiment, the WHITE TONE scope of display device is between 8, and 500K and 11 is in the time of between the 500K; The luminous frequency spectrum BL (λ i) of white light emitting diode has the brightness peak of relative maximum when wavelength X i is between 430 nanometers (nm) and 470 nanometers (nm), between 490 nanometers (nm) and 570 nanometers (nm) and between 600 nanometers (nm) and 680 nanometers (nm); Wavelength X 1 can be 595 nanometers (nm); The scope of wavelength X 2 can be between 430 nanometers (nm) and 470 nanometers (nm) (in the blue light wave band).At this moment, luminous frequency spectrum BL (λ i) can with penetrate frequency spectrum CF (λ i) and satisfy following particular kind of relationship:
Y(λ1)＝CF(λ1)×BL(λ1)；
MAX(λ2)＝MAX[CF(λ2)×BL(λ2)]；
0.2≤Y(λ1)/MAX(λ2)≤1；
Also be, penetrate frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1) the product Y (λ 1) when wavelength X 1 is 595 nanometers (nm), be Y (595), and penetrating frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) at wavelength X 2 maximum product MAX (λ 2) when (in the blue light wave band) between 430 nanometers (nm) and 470 nanometers (nm), both ratio can be between 0.2 and 1.
The pigment of the redness on colored filter substrate 104, green and blue color filter layer 114 is formed or the concentration process is adjusted, make white light emitting diode luminous frequency spectrum BL (λ i) and colored filter substrate 104 penetrate frequency spectrum CF (λ i) when meeting above-mentioned wherein a particular kind of relationship, the red image that display device 100 is shown, the X-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates can be between 0.635 and 0.75 (0.635≤Rx≤0.75); The green image that display device 100 is shown, the Y-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates can be between 0.595 and 0.85 (0.595≤Gy≤0.85); And the shown blue image of display device 100, the Y-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates then can be between 0 and 0.065 (0≤By≤0.065).Thus, display device 100 shown pictures just can reach the color standard of sRGB institute standard, and promptly (Rx Ry) is (0.64 to its red chromaticity coordinates, 0.33), (Gx Gy) is (0.30,0.60) to green chromaticity coordinates, (Bx By) is (0.15,0.06) to blue chromaticity coordinates.
In addition, even if utilize different white light emitting diodes as backlight, also can be by adjusting the filter layer 114 of colored filter substrate, make the luminous frequency spectrum BL (λ i) of new backlight and the frequency spectrum CF (λ i) that penetrates of colored filter substrate 104 meet an above-mentioned particular kind of relationship wherein, can make the shown picture of display device reach the color standard of sRGB (standard RGB) institute standard.
Before Fig. 3 a is filter layer of the present invention and the adjusted display device 100 of backlight and prior art filter layer and backlight adjustment, the comparison synoptic diagram of its Y (λ 1) and MAX (λ 2).Wherein, transverse axis is spectral wavelength (unit is a nanometer), the longitudinal axis then is nondimensional Y (λ i)/MAX (λ i) ratio, dotted portion is the situation before filter layer and backlight are adjusted, solid line then is the adjusted situation of filter layer and backlight, MAXR represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the red light wave band) between 620 nanometers (nm) and 680 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).Similarly, although new backlight module 102 has new luminous frequency spectrum BL " (λ i); as long as the adjusted display device 100 of filter layer; its colored filter substrate 104 penetrate frequency spectrum CF " (λ i) and new luminous frequency spectrum BL " (λ i) satisfy the relation of 0.55≤Y (595)/MAXR≤1; can reach the color standard of sRGB institute standard, so principle is applicable to the backlight of different types of white light emitting diode.
Fig. 3 b is filter layer of the present invention and the adjusted display device of backlight and known technology filter layer and the preceding display device of backlight adjustment, the comparison synoptic diagram of its Y (λ 1) and MAX (λ 2).Wherein, transverse axis is spectral wavelength (unit is a nanometer), the longitudinal axis then is nondimensional Y (λ i)/MAX (λ i) ratio, dotted portion is the situation before filter layer and backlight are adjusted, solid line then is the adjusted situation of filter layer and backlight, MAXG represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the green light wave band) between 490 nanometers (nm) and 570 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).Similarly, as long as the adjusted display device of filter layer, its colored filter substrate penetrate frequency spectrum CF " (λ i) and new luminous frequency spectrum BL " (λ i) satisfy the relation of 0.55≤Y (595)/MAXG≤1, can reach the color standard of sRGB institute standard, so principle is applicable to the backlight of different types of white light emitting diode.
Fig. 3 c is filter layer of the present invention and the adjusted display device of backlight and filter layer and the preceding display device of backlight adjustment, the comparison synoptic diagram of its Y (λ 1) and MAX (λ 2).Wherein, transverse axis is spectral wavelength (unit is a nanometer), the longitudinal axis then is nondimensional Y (λ i)/MAX (λ i) ratio, dotted portion is the situation before filter layer and backlight are adjusted, solid line then is the situation behind filter layer adjustment and the backlight, MAXB represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the blue light wave band) between 430 nanometers (nm) and 470 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).Similarly, as long as the adjusted display device of filter layer, its colored filter substrate penetrate frequency spectrum CF " (λ i) and new luminous frequency spectrum BL " (λ i) satisfy the relation of 0.25≤Y (595)/MAXB≤1, can reach the color standard of sRGB institute standard, so principle is applicable to the backlight of different types of white light emitting diode.
On the other hand, the above-mentioned relation that penetrates frequency spectrum CF (λ i) and luminous frequency spectrum BL (λ i) also can be used in the relatively large display device (as: flat-surface television display), make the luminous frequency spectrum BL (λ i) of backlight and the frequency spectrum CF (λ i) that penetrates of colored filter substrate meet an above-mentioned particular kind of relationship wherein, and then make the shown picture of display device reach the color standard of EBU (European Broadcasting Union) institute's standard.EBU is the general Europe rule color standard that TV adopted, and (Rx Ry) is (0.64,0.33) to its red chromaticity coordinates, and (Gx Gy) is (0.29,0.60) to green chromaticity coordinates, and (Bx By) is (0.15,0.06) to blue chromaticity coordinates; SRGB institute standard then be the color standard that the general information product is had, both difference only is the numerical value difference of green X axle chromaticity coordinate value Gx, and method of the present invention can't have influence on green chromaticity coordinate value Gx.Therefore, method of the present invention can be applicable in the display device of tool EBU or sRGB standard simultaneously.
Fig. 4 a is the adjusted large-scale display device of filter layer of the present invention, the comparison synoptic diagram of its Y (λ 1) and MAX (λ 2).Wherein, CF_TV represents the frequency spectrum that penetrates that colored filter substrate had in the large-scale display device, BL_TV represents the luminous frequency spectrum that white light emitting diode had in its backlight module, MAXR represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the red light wave band) between 620 nanometers (nm) and 680 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).As shown in the figure, Y (595) can satisfy the relation of 0.55≤Y (595)/MAXR≤1 with MAXR.
Fig. 4 b is the adjusted large-scale display device of filter layer of the present invention, the comparison synoptic diagram of its Y (λ 1) and MAX (λ 2).Wherein, CF_TV represents the frequency spectrum that penetrates that colored filter substrate had in the large-scale display device, BL_TV represents the luminous frequency spectrum that white light emitting diode had in its backlight module, MAXG represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the green light wave band) between 490 nanometers (nm) and 570 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).As shown in the figure, Y (595) can satisfy the relation of 0.55≤Y (595)/MAXR≤1 with MAXG.
Fig. 4 c is the adjusted large-scale display device of filter layer of the present invention, the comparison synoptic diagram of its Y (λ 1) and MAX (λ 2).Wherein, CF_TV represents the frequency spectrum that penetrates that colored filter substrate had in the large-scale display device, BL_TV represents the luminous frequency spectrum that white light emitting diode had in its backlight module, MAXB represents to penetrate frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2) in wavelength X 2 maximum product when (in the blue light wave band) between 430 nanometers (nm) and 470 nanometers (nm), and Y (595) expression penetrates frequency spectrum CF (λ 1) and the product of luminous frequency spectrum BL (λ 1) when wavelength X 1 is 595 nanometers (nm).As shown in the figure, Y (595) can satisfy the relation of 0.2≤Y (595)/MAXR≤1 with MAXB.
In addition, the present invention also proposes a kind of method of adjusting the colored filter substrate filter layer, so as to improving the display frame of display device.Fig. 5 adjusts the process flow diagram of the method for colored filter substrate filter layer for the present invention.At first, provide a white light emitting diode, and to make it send wavelength be that the light of λ i has a luminous frequency spectrum BL (λ i) as step 500.Then, provide to have a colored filter substrate that penetrates frequency spectrum CF (λ i), as step 502, wherein this colored filter substrate comprises a plurality of redness, green and blue color filter layer (or claiming filter layer).
Then, adjusting the pigment of red filter layer in the colored filter substrate forms or concentration, to improve its penetrance when wavelength X i scope is between 580 nanometers (nm) and 600 nanometers (nm), as step 504, and the pigment of adjusting colored filter substrate medium green color filtering optical layer is formed or concentration, to improve its penetrance when wavelength X i scope is between 570 nanometers (nm) and 590 nanometers (nm), as step 506, adjusting the pigment of colored filter substrate Smalt filter layer afterwards again forms or concentration, to improve the color saturation of blue color filter layer, as step 508.In one embodiment, the pigment of above-mentioned red filter layer is formed or concentration is adjusted and make the penetrance of red filter layer when wavelength X i can be 590 nanometers (nm) improve, and the pigment of green filter layer is formed or concentration then is to be adjusted and to make the penetrance of green filter layer when wavelength X i can be 580 nanometers (nm) improve.
This it should be noted that the execution sequence of above-mentioned steps 500 and 502 can exchange mutually or even carry out simultaneously, and adjust the step 504,506 and 508 of filter layer, its execution sequence also can exchange mutually or even carry out simultaneously, be not limited to shown in Figure 5.
Then, confirm luminous frequency spectrum BL (λ i) and the pigment composition or the concentration that whether penetrate between the frequency spectrum CF (λ i) according to adjusted red filter layer and green filter layer have following particular kind of relationship, as step 510:
Y(λi)＝CF(λi)×BL(λi)，λi＝λ1；
MAX(λi)＝MAX[CF(λi)×BL(λi)]，λi＝λ2；
0.55≤Y(λ1)/MAX(λ2)≤1；
Wherein, wavelength X 1 can be 595 nanometers (nm), the scope of wavelength X 2 is between 620 nanometers (nm) and 680 nanometers (nm), Y (λ 1) is the product that penetrates frequency spectrum CF (λ 1) and luminous frequency spectrum BL (λ 1), and MAX (λ 2) is the maximum product that penetrates frequency spectrum CF (λ 2) and luminous frequency spectrum BL (λ 2).
If luminous frequency spectrum BL (λ i) and penetrate between the frequency spectrum CF (λ i) and satisfy above-mentioned particular kind of relationship does not then need the pigment composition or the concentration of red and green filter layer to be adjusted again.Otherwise, as luminous frequency spectrum BL (λ i) with penetrate frequency spectrum CF (λ i) when not satisfying above-mentioned particular kind of relationship, then adjust the pigment composition or the concentration of red and green filter layer again, as step 512.Afterwards, return step 510, confirm luminous frequency spectrum BL (λ i) and penetrate between the frequency spectrum CF (λ i) whether satisfy above-mentioned particular kind of relationship.
By the embodiment of the invention described above as can be known, the application of aforementioned display device reaches the method for wherein adjusting the colored filter substrate filter layer, can improve the color representation in the display frame, make display device when using white light LEDs as backlight, its color representation can be comparatively natural, makes the colourity of display frame reach the codes and standards of sRGB or EBU.
Though the present invention with embodiment openly as above; right its is not in order to limit the present invention; any have a general technical staff of the technical field of the invention; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking appended the scope that claim defined.
Claims (17)
1. liquid crystal indicator comprises:
One white light emitting diode in order to sending the light that wavelength is λ i, and has a luminous frequency spectrum BL (λ i); And
One colored filter substrate is provided with corresponding to this white light emitting diode, and comprises a plurality of red filter layer, a plurality of green filter layer and a plurality of blue color filter layer, and this colored filter substrate has one and penetrates frequency spectrum CF (λ i);
Wherein, this luminous frequency spectrum BL (λ i) penetrates frequency spectrum CF (λ i) with this and satisfies following particular kind of relationship:
Y(λi)＝CF(λi)×BL(λi)，λi＝λ1；
MAX(λi)＝MAX[CF(λi)×BL(λi)]，λi＝λ2；
0.20≤Y(λ1)/MAX(λ2)≤1；
Wherein, the scope of wavelength X 1 is between 590 nanometers and 600 nanometers, Y (λ 1) penetrates the product of frequency spectrum CF (λ 1) and this luminous frequency spectrum BL (λ 1) for this, and MAX (λ 2) penetrates the maximum product of frequency spectrum CF (λ 2) and this luminous frequency spectrum BL (λ 2) for this.
2. liquid crystal indicator as claimed in claim 1, wherein wavelength X 1 is about 595 nanometers.
3. liquid crystal indicator as claimed in claim 2, wherein Y (λ 1) satisfies following particular kind of relationship in addition with MAX (λ 2):
0.55≤Y(λ1)/MAX(λ2)≤1，
And the scope of wavelength X 2 is between 620 nanometers and 680 nanometers.
4. liquid crystal indicator as claimed in claim 2, wherein the WHITE TONE scope of this display device is between 8, and 500K and 11 is between the 500K.
5. liquid crystal indicator as claimed in claim 4, wherein the scope of wavelength X 2 is between 430 nanometers and 470 nanometers.
6. liquid crystal indicator as claimed in claim 2, wherein the WHITE TONE scope of this display device is between 5, and 000K and 8 is between the 500K.
7. liquid crystal indicator as claimed in claim 6, wherein Y (λ 1) satisfies following particular kind of relationship in addition with MAX (λ 2):
0.25≤Y(λ1)/MAX(λ2)≤1，
And the scope of wavelength X 2 is between 430 nanometers and 470 nanometers.
8. liquid crystal indicator as claimed in claim 2, wherein Y (λ 1) satisfies following particular kind of relationship in addition with MAX (λ 2):
0.65≤Y(λ1)/MAX(λ2)≤1，
And the scope of wavelength X 2 is between 620 nanometers and 680 nanometers.
9. liquid crystal indicator as claimed in claim 2, wherein Y (λ 1) satisfies following particular kind of relationship in addition with MAX (λ 2):
0.70≤Y(λ1)/MAX(λ2)≤1，
And the scope of wavelength X 2 is between 490 nanometers and 570 nanometers.
10. liquid crystal indicator as claimed in claim 2, wherein Y (λ 1) satisfies following particular kind of relationship in addition with MAX (λ 2):
0.25≤Y(λ1)/MAX(λ2)≤1，
And the scope of wavelength X 2 is between 430 nanometers and 470 nanometers.
11. liquid crystal indicator as claimed in claim 1, the shown red image of this display device wherein, the X-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates is between 0.635 and 0.75.
12. liquid crystal indicator as claimed in claim 1, the shown green image of this display device wherein, the Y-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates is between 0.595 and 0.85.
13. liquid crystal indicator as claimed in claim 1, the shown blue image of this display device wherein, the Y-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates is between 0 and 0.065.
14. a method of adjusting the colored filter substrate filter layer comprises:
Provide a white light emitting diode, and to make it send wavelength be that the light of λ i has a luminous frequency spectrum BL (λ i);
One colored filter substrate is provided, comprises a plurality of red filter layer, a plurality of green filter layer and a plurality of blue color filter layer, and have one and penetrate frequency spectrum CF (λ i);
Adjust the pigment of described a plurality of red filter layer and form or concentration, to improve its penetrance when the scope of wavelength X i is between 580 nanometers and 600 nanometers;
Adjust the pigment of described a plurality of green filter layers and form or concentration, to improve its penetrance when the scope of wavelength X i is between 570 nanometers and 590 nanometers;
Adjust the pigment of described a plurality of blue color filter layer and form or concentration, to improve the color saturation of described a plurality of blue color filter layer; And
Pigment according to adjusted described a plurality of red filter layer and described a plurality of green filter layers is formed or concentration, confirms that this luminous frequency spectrum BL (λ i) and this penetrate frequency spectrum CF (λ i) and whether satisfy following particular kind of relationship:
Y(λi)＝CF(λi)×BL(λi)，λi＝λ1；
MAX(λi)＝MAX[CF(λi)×BL(λi)]，λi＝λ2；
0.55≤Y(λ1)/MAX(λ2)≤1；
Wherein, wavelength X 1 is about 595 nanometers, the scope of wavelength X 2 is between 620 nanometers and 680 nanometers, Y (λ 1) penetrates the product of frequency spectrum CF (λ 1) and this luminous frequency spectrum BL (λ 1) for this, and MAX (λ 2) penetrates the maximum product of frequency spectrum CF (λ 2) and this luminous frequency spectrum BL (λ 2) for this;
When this luminous frequency spectrum BL (λ i) penetrates frequency spectrum CF (λ i) when satisfying described particular kind of relationship with this, then this method finishes.
15. method as claimed in claim 14 also comprises:, adjust the pigment of described a plurality of red filter layer and described a plurality of green filter layers again and form or concentration when this luminous frequency spectrum BL (λ i) penetrates frequency spectrum CF (λ i) when not satisfying described particular kind of relationship with this.
16. method as claimed in claim 14, the pigment of wherein said a plurality of red filter layer is formed or concentration is adjusted and make the penetrance of described a plurality of red filter layer when wavelength X i is about 590 nanometers improve, and the pigment of described a plurality of green filter layers is formed or concentration is adjusted and make the penetrance of described a plurality of green filter layer when wavelength X i is about 580 nanometers improve.
17. a liquid crystal indicator comprises:
One white light emitting diode as claimed in claim 14; And
One colored filter substrate is provided with corresponding to this white light emitting diode, and comprises a plurality of red filter layer, a plurality of green filter layer and a plurality of blue color filter layer;
Wherein, described a plurality of red filter layer have as claim 14 adjust as described in the pigment of a plurality of red filter layer form or concentration, and described a plurality of green filter layer have as claim 14 adjust as described in the pigment of a plurality of green filter layers form or concentration, wherein said a plurality of blue color filter layer have as claim 14 adjust as described in the pigment of a plurality of blue color filter layer form or concentration.
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| CN101738783B (en) * | 2010-01-18 | 2011-08-17 | 友达光电股份有限公司 | Display equipment for improving white color offset and manufacturing method thereof |
| CN101819350B (en) * | 2010-05-05 | 2011-11-16 | 华映视讯（吴江）有限公司 | Method capable of improving color offset phenomenon of liquid crystal display panel |
| TW201227073A (en) * | 2010-12-31 | 2012-07-01 | Au Optronics Corp | Color display |
| TWI468797B (en) * | 2011-02-25 | 2015-01-11 | Au Optronics Corp | Display apparatus and backlight module thereof |
| TWI467527B (en) * | 2011-11-25 | 2015-01-01 | Au Optronics Corp | Display device |
| TW201339654A (en) * | 2012-03-19 | 2013-10-01 | Au Optronics Corp | Color filter and liquid crystal display device |
| CN103576379B (en) * | 2012-07-27 | 2016-03-30 | 群康科技(深圳)有限公司 | Liquid crystal indicator |
| CN102840481B (en) * | 2012-08-15 | 2014-08-27 | 杭州鸿雁电器有限公司 | Mobile supplementary lighting system used for improving color development effect |
| TWI472843B (en) * | 2012-11-20 | 2015-02-11 | Au Optronics Corp | Display device |
| TWI624713B (en) * | 2014-04-23 | 2018-05-21 | 鴻海精密工業股份有限公司 | Display device |
| CN109103214B (en) | 2017-06-20 | 2020-11-06 | 京东方科技集团股份有限公司 | Organic light emitting diode display panel, manufacturing method thereof and display device |
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| KR20040067758A (en) * | 2003-03-18 | 2004-07-30 | 우리조명 주식회사 | Led lamp for controlling color temperature |
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