CN101403831A - 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 color resistances 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 equipment and adjustment color resistance of color filter thereof, and be particularly related to a kind of method that has the display equipment of white light-emitting diodes backlight module and adjust color resistance of color filter.
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 equipment, 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 equipment the method for adjusting color resistance of color filter, improves the undesirable problems of color such as red in the display frame of display equipment, green and blueness so as to correction.
A technical scheme of the present invention relates to a kind of display equipment, comprises a white light-emitting diode and a colored filter.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 is corresponding to the white light-emitting diode setting, and comprises a plurality of red color resistance, a plurality of green look resistance and a plurality of blue look resistance, and colored filter 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 color resistance of color filter, 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 is provided, and it comprises a plurality of red color resistance, the resistance of a plurality of green look and a plurality of blue looks resistances, and has one and penetrate frequency spectrum CF (λ i); Adjust the pigment of above-mentioned red color resistance 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 look resistance 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 equipment, comprises a white light-emitting diode and a colored filter.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 is corresponding to the white light-emitting diode setting, and comprises a plurality of red color resistance, a plurality of green look resistance and a plurality of blue look resistance.Wherein, above-mentioned red color resistance 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 look resistance 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 equipment reaches the method for wherein adjusting color resistance of color filter, 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 equipment for embodiments of the invention.
Fig. 2 a is that first embodiment of the invention illustrates before a kind of look resistance 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 look resistance 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 look resistance 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 a kind of look resistance and backlight is adjusted comparison synoptic diagram preceding and look resistance and adjusted Y of backlight (λ 1) and MAX (λ 2).
Fig. 4 a-Fig. 4 c is that the embodiment of the invention illustrates the synoptic diagram that look in a kind of giant display device hinders adjusted Y (λ 1) and MAX (λ 2).
Fig. 5 is a kind of process flow diagram of adjusting the method for color resistance of color filter for the embodiment of the invention illustrates.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
100: display equipment
102: backlight module
104: colored filter substrate
106: the matrix array substrate
110,112: Polarizer
114: the look resistance
116: pixel
120: display panels
500～512: step
Embodiment
Fig. 1 is the synoptic diagram of display equipment of the present invention.Display equipment 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 look hinders (or claiming 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, after redness, green and the blue look resistance 114 through colored filter substrate 104, just can be converted into the coloured light of corresponding color according to this.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 red on the colored filter substrate 104, green and blue look resistance 114 forms or concentration be should give adjustment, 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 equipment 100 and the preceding display equipment of known technology look resistance adjustment for look of the present invention hinders, 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 the look resistance is adjusted, the solid line part then hinders adjusted situation for look, 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 equipment 100 and the preceding display equipment of known technology look resistance adjustment for look of the present invention hinders, 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 the look resistance is adjusted, solid line then hinders adjusted situation for look, 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 equipment 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 equipment 100 and the preceding display equipment of known technology look resistance adjustment for look of the present invention hinders, 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 the look resistance is adjusted, solid line then hinders adjusted situation for look, 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 equipment 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 look resistance 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 equipment 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 equipment 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 equipment 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 equipment 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 look resistance 114 of colored filter, 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 equipment reach the color standard of sRGB (standard RGB) institute standard.
Fig. 3 a for look of the present invention resistance and the adjusted display equipment 100 of backlight and resistance of prior art look and backlight adjustment before, 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 look resistance and backlight are adjusted, solid line then is look resistance and the adjusted situation of 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 look hinders adjusted display equipment 100; 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 look resistance of the present invention and the adjusted display equipment of backlight and resistance of known technology look and the preceding display equipment 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 look resistance and backlight are adjusted, solid line then is look resistance and the adjusted situation of 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 look hinders adjusted display equipment, 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 look resistance of the present invention and the adjusted display equipment of backlight and look resistance and the preceding display equipment 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 look resistance and backlight are adjusted, solid line then is the situation behind look resistance 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 look hinders adjusted display equipment, 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 equipment (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 meet an above-mentioned particular kind of relationship wherein, and then make the shown picture of display equipment 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 adjusted giant display device for look of the present invention hinders, 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 giant 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 adjusted giant display device for look of the present invention hinders, 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 giant 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 adjusted giant display device for look of the present invention hinders, 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 giant 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 color resistance of color filter, so as to improving the display frame of display equipment.Fig. 5 adjusts the process flow diagram of the method for color resistance of color filter 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 that penetrates frequency spectrum CF (λ i), as step 502, wherein this colored filter comprises a plurality of redness, green and the resistance of blue look (or claiming filter layer).
Then, adjusting the pigment of red color resistance in the colored filter 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 green look resistance is formed or concentration in the adjustment colored filter, 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 Smalt look resistance afterwards again forms or concentration, to improve the color saturation of blue look resistance, as step 508.In one embodiment, the pigment of above-mentioned red color resistance is formed or concentration is adjusted and make the penetrance of red color resistance when wavelength X i can be 590 nanometers (nm) improve, and the pigment of green look resistance is formed or concentration then is to be adjusted and to make the penetrance of green look resistance 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 look resistance, 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 color resistance and the resistance of green look 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, the pigment composition or the concentration that then do not need red and green look to be hindered are 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 look resistance 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 equipment reaches the method for wherein adjusting color resistance of color filter, can improve the color representation in the display frame, make display equipment 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 (20)
1. display equipment 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 is provided with corresponding to this white light-emitting diode, and comprises a plurality of red color resistance, a plurality of green look resistance and a plurality of blue look resistance, and this colored filter 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. display equipment as claimed in claim 1, wherein wavelength X 1 is about 595 nanometers.
3. display equipment 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. display equipment as claimed in claim 2, wherein the WHITE TONE scope of this display equipment is between 8, and 500K and 11 is between the 500K.
5. display equipment as claimed in claim 4, wherein the scope of wavelength X 2 is between 430 nanometers and 470 nanometers.
6. display equipment as claimed in claim 2, wherein the WHITE TONE scope of this display equipment is between 5, and 000K and 8 is between the 500K.
7. display equipment 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. display equipment as claimed in claim 1, 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. display equipment as claimed in claim 1, 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. display equipment as claimed in claim 1, 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. display equipment as claimed in claim 1, the shown red image of this display equipment wherein, the X-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates is between 0.635 and 0.75.
12. display equipment as claimed in claim 1, the shown green image of this display equipment wherein, the Y-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates is between 0.595 and 0.85.
13. display equipment as claimed in claim 1, the shown blue image of this display equipment wherein, the Y-axis chromaticity coordinate value of its CIE 1931 chromaticity coordinates is between 0 and 0.065.
14. a method of adjusting color resistance of color filter 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 is provided, comprises a plurality of red color resistance, the resistance of a plurality of green look and a plurality of blue looks resistances, and have one and penetrate frequency spectrum CF (λ i);
Adjust the pigment of described a plurality of red color resistance and form or concentration, to improve its penetrance when the scope of wavelength X i is between 580 nanometers and 600 nanometers; And
Adjust the pigment of described a plurality of green look resistances and form or concentration, to improve its penetrance when the scope of wavelength X i is between 570 nanometers and 590 nanometers.
15. method as claimed in claim 14, other comprises:
Confirm that this luminous frequency spectrum BL (λ i) and this penetrate whether frequency spectrum CF (λ i) forms according to the pigment of adjusted described a plurality of red color resistance and described a plurality of green look resistances or concentration satisfies 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.
16. method as claimed in claim 15, other comprises: when this luminous frequency spectrum BL (λ i) penetrates frequency spectrum CF (λ i) when not satisfying described particular kind of relationship with this, adjust the pigment of described a plurality of red color resistance and described a plurality of green look resistances again and form or concentration.
17. method as claimed in claim 14, other comprises:
Adjust the pigment of those blue look resistances and form or concentration, to improve the color saturation of those blue look resistances.
18. method as claimed in claim 14, the pigment of wherein said a plurality of red color resistance is formed or concentration is adjusted and make the penetrance of described a plurality of red color resistance when wavelength X i is about 590 nanometers improve, and the pigment of described a plurality of green look resistances is formed or concentration is adjusted and make the penetrance of described a plurality of green look resistances when wavelength X i is about 580 nanometers improve.
19. a display equipment comprises:
One white light-emitting diode as claimed in claim 14; And
One colored filter is provided with corresponding to this white light-emitting diode, and comprises a plurality of red color resistance, a plurality of green look resistance and a plurality of blue look resistance;
Wherein, described a plurality of red color resistance have as claim 15 adjust as described in the pigment of a plurality of red color resistance form or concentration, and described a plurality of green look resistance have as claim 15 adjust as described in the pigment of a plurality of green looks resistances form or concentration.
20. display equipment as claimed in claim 19, wherein said a plurality of blue looks resistances have as claim 17 adjust as described in the pigment of a plurality of blue looks resistances form or concentration.
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