CN107561781A - Display device - Google Patents
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- CN107561781A CN107561781A CN201710822543.5A CN201710822543A CN107561781A CN 107561781 A CN107561781 A CN 107561781A CN 201710822543 A CN201710822543 A CN 201710822543A CN 107561781 A CN107561781 A CN 107561781A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133624—Illuminating devices characterised by their spectral emissions
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Led Device Packages (AREA)
- Liquid Crystal (AREA)
Abstract
A kind of display device includes a display panel, display panel launches a green light when highest gray scale shows a green picture, green light has a green energy and a green color point, display panel launches a blue ray when highest gray scale shows a blue picture, blue ray has a blue energy and a blue color point, green energy and blue energy ratio are between 0.7 and 1.5, green color point corresponds in CIE 1931xy chromaticity coordinates, and green color point coordinate range is between equation y=48.85x2+ 21.987x 1.7766 and equation y=48.85x2Between+27.849x 3.2717, y-coordinate is between 0.68 and 0.72.The display device of the present invention has high colour gamut and preferable display quality.
Description
The application is that August in 2013 is applied on the 27th, Application No. " 201310376044.X ", entitled " display
The divisional application of the Chinese invention patent application of device "
Technical field
The present invention is on a kind of display device, especially in regard to a kind of aobvious with high colour gamut and preferable display color quality
Showing device.
Background technology
With the development of science and technology flat display apparatus is widely used in various fields, especially liquid crystal display
Device, because with build is frivolous, low power consumption and the advantageous characteristic such as radiationless, gradually substituting conventional cathode ray tube
Display device, and apply into the electronic product of numerous species, such as mobile phone, portable multimedia device, notes type electricity
Brain, tablet personal computer and other displays etc..
Liquid crystal display device mainly includes a liquid crystal display panel (LCD Panel) and a backlight module module
(Backlight Module).Wherein, liquid crystal display panel has a thin film transistor base plate, a colored optical filtering substrates and one
The liquid crystal layer being located between two substrates, two substrates can form the pixel of multiple arrays settings with liquid crystal layer.In addition, backlight module can
Emit beam through liquid crystal display panel, and show color via each pixel of liquid crystal display panel and form an image.
In the design of display device, color taste is a critically important design factor, and it can be sat by colourity
Mark is specifically presented, such as a display panel, its light sent can be corresponded to the chromaticity coordinates of a CIE 1931,
And in chromaticity coordinate, three primary colors (blue, green and red) all have its corresponding color dot, i.e. the three of chromatic triangle summit.Mesh
The chromaticity specification of preceding relatively popularization is sRGB, and the coordinate of its blue color point in the chromaticity coordinates of CIE 1931 is (0.15,0.06),
The coordinate of green color point is (0.3,0.6), and the coordinate of red color point is (0.64,0.33).If three primary colors color dot deviates sRGB
Standard color point coordinates are too many, then the image color for representing display panel is lost really possible and makes picture poor display, to cause
The quality of user's viewing reduces.In addition, high colour gamut (high color gamut) represent display device can show that it is more
Color Range, and one of target of major producer's active pursuit.
Therefore, how a kind of display device is provided, can have high colour gamut and preferable display quality simultaneously and to lift product competing
Power is striven, actually one of current important topic.
The content of the invention
In view of above-mentioned problem, the purpose of the present invention can be lifted to provide one kind with high colour gamut and preferable display quality
The display device of product competitiveness.
For the above-mentioned purpose, a kind of display device according to the present invention includes a display panel, and display panel is in highest ash
Degree (with for 8-bit color ranges for 255 gray scales) one green picture of display when launch a green light, green light is green with one
Color energy and a green color point, display panel launch a blue ray, blue light when highest gray scale shows a blue picture
Line has a blue energy and a blue color point, and green energy and blue energy ratio are the green colors between 0.7 and 1.5
Point corresponds in CIE 1931xy chromaticity coordinates, and green color point coordinate range is between equation y=-48.85x2+21.987x–
1.7766 with equation y=-48.85x2Between+27.849x -3.2717, y-coordinate is between 0.68 and 0.72.
In one embodiment, the ratio of green energy and blue energy is more between 0.7 and 1.2.
In one embodiment, the ratio of green energy and blue energy is more between 0.75 and 1.1.
In one embodiment, display panel launches a red light when highest gray scale shows a red picture, red
Light has a red energy and a red color point, red energy and blue energy ratio be between 1.2 and 2.6, it is and red
Color color dot corresponds in CIE 1931xy chromaticity coordinates, and red color point coordinate range is between equation y=-2.021x2+
2.1871x -0.2218 and equation y=-2.021x2Between+2.1871x -0.2618, x coordinate be between 0.66 and 0.70 it
Between.
In one embodiment, the ratio of red energy and blue energy is more between 1.2 and 1.7.
In one embodiment, the ratio of red energy and blue energy is more between 1.25 and 1.6.
In one embodiment, blue light color dot corresponds in CIE 1931xy chromaticity coordinates, and blue color point coordinate range
It is between equation y=-168.72x2+ 50.312x -3.635 and equation y=-168.72x2Between+63.81x -5.9174, y
Coordinate is between 0.04 and 0.08.
In one embodiment, the ratio of green energy and blue energy is more between 1.0 and 1.5.
In one embodiment, the ratio of red energy and blue energy is more between 2.0 and 2.6.
In one embodiment, the ratio of the red energy of light and blue energy is more between 2.1 and 2.5.
In one embodiment, green color point coordinate range is more between equation y=-48.85x2+ 23.452x -2.1174 with
Equation y=-48.85x2Between+26.383x -2.8649, y-coordinate is more between 0.69 and 0.71.
In one embodiment, red color point coordinate range is more between equation y=-2.021x2+ 2.1871x -0.2318 with
Equation y=-2.021x2Between+2.1871x -0.2518, x coordinate is more between 0.67 and 0.69.
In one embodiment, blue color point coordinate range is more between equation y=-168.72x2+ 53.687x -4.155 with
Equation y=-168.72x2Between+60.436x -5.2962, y-coordinate is between 0.05 and 0.07.
In one embodiment, green color point corresponds in CIE 1976u'v' chromaticity coordinates, and the u' coordinates of green color point
Scope is between 0.05 and 0.1, and v' coordinates are greater than 0.55.
In one embodiment, red color point corresponds in CIE 1976u'v' chromaticity coordinates, and the u' coordinates of red color point
Scope is between 0.5 and 0.55, and v' coordinates are greater than 0.5.
In one embodiment, blue color point corresponds in CIE 1976u'v' chromaticity coordinates, and the u' coordinates of blue color point
It is between 0.15 and 0.2, v' coordinates are between 0.1 and 0.2.
From the above, in the display device of the present invention, display panel (is 255 for 8-bit color ranges in highest gray scale
Gray scale) one green picture of display when launch a green light, green light has a green energy and a green color point, display
Panel launches a blue ray when highest gray scale shows a blue picture, and blue ray has a blue energy and a blueness
Color dot, green energy and blue energy ratio are between 0.7 and 1.5, and green color point is sat corresponding to CIE 1931xy colourities
Put on, green color point coordinate range is between equation y=-48.85x2+ 21.987x -1.7766 and equation y=-48.85x2
Between+27.849x -3.2717, y-coordinate is between 0.68 and 0.72.Whereby, above-mentioned color dot scope meets close to sRGB and advised
The color designs of model, and substantially extend with the color dot of sRGB specifications with tone and past high colour gamut direction so that of the invention is aobvious
Showing device has high colour gamut and preferable display quality and can lift product competitiveness.
Brief description of the drawings
Figure 1A is a kind of schematic diagram of display device of present pre-ferred embodiments.
Figure 1B is the schematic diagram of Figure 1A display panel.
Fig. 2 is the intensity spectrum schematic diagram for the light for passing display panel.
The signal of a CIE 1931xy chromaticity coordinates corresponding to the light that Fig. 3 A are launched for the display panel of the present invention
Figure.
Fig. 3 B, Fig. 3 C and Fig. 3 D are respectively Fig. 3 A region O, P, Q enlarged diagram.
The signal of a CIE 1976u'v' chromaticity coordinates corresponding to the light that Fig. 4 is launched for the display panel of the present invention
Figure.
Drawing reference numeral：
1：Display device
11：Display panel
111：First substrate
112：Second substrate
1121：Chromatic filter layer
113：Liquid crystal layer
12：Backlight module
A1~F1, A2~F2：Equation
O、P、Q：Region
Embodiment
Hereinafter with reference to relevant drawings, illustrate a kind of display device according to present pre-ferred embodiments, wherein identical member
Part will be illustrated with identical reference marks.
It refer to shown in Figure 1A and Figure 1B, wherein, Figure 1A is a kind of signal of display device 1 of present pre-ferred embodiments
Figure, and Figure 1B is the schematic diagram of Figure 1A display panel 11.
Display device 1 includes a display panel 11 and a backlight module 12, display panel 11 are relative with backlight module 12
Set.In this, display panel 11 is a liquid crystal display panel, and it includes a first substrate 111, a second substrate 112 and one
Liquid crystal layer 113.First substrate 111 is, for example, a thin film transistor base plate, and second substrate 112 is, for example, a colored optical filtering substrates,
And liquid crystal layer 113 is then folded between first substrate 111 and second substrate 112.Wherein, first substrate 111 and second substrate 112
Glass substrate, transparent acrylic substrate or flexible base plate (flexible substrate) can be used, or use touch base plate.
In the present embodiment, second substrate 112 includes a chromatic filter layer 1121, chromatic filter layer 1121 include a blue filter portion,
One green filter portion and a red filter portion (figure is not shown).When the light penetration that the backlight of backlight module 12 is sent is color
During the blue filter portion of color filtering optical layer 1121, it can form the blue energy of the light of display panel 11, and can be by the indigo plant of light
Optical spectrum is presented；When the light penetration green filter portion that the backlight of backlight module 12 is sent, it can form display panel
The green energy of 11 light, and can be presented by the green glow frequency spectrum of light；When the light that the backlight of backlight module 12 is sent
When penetrating red filter portion, it can form the red energy of the light of display panel 11, and can be presented by the feux rouges frequency spectrum of light.
In the present embodiment, be so that chromatic filter layer 1121 is located at second substrate 112 as an example, in other embodiment, chromatic filter layer
1121 may be disposed on first substrate 111.
It refer to shown in Fig. 2, it is the intensity spectrum schematic diagram for the light for passing display panel 11.Wherein, the longitudinal axis is strong
Spend for arbitrary unit.
As shown in Fig. 2 intensity spectrum includes a green glow frequency spectrum, a blue light frequency spectrum and a feux rouges frequency spectrum.Green glow frequency spectrum is
Refer to the frequency spectrum obtained by when display panel 11 only shows the picture of green highest gray scale (being 255 gray scales for 8-bit color ranges),
Feux rouges frequency spectrum refers to when display panel 11 only shows the picture of red highest gray scale (being 255 gray scales for 8-bit color ranges)
The frequency spectrum of gained, and blue light frequency spectrum refer to when display panel 11 only show blue highest gray scale (with for 8-bit color ranges be 255
Gray scale) picture when obtained by frequency spectrum.
In this, green light has a green energy and a green color point, and green energy is a product of corresponding green glow frequency spectrum
Facet accumulates (i.e. the area under a curve of green glow frequency spectrum), and red light has a red energy and a red color point, red energy
It is an integral area (i.e. the area under a curve of feux rouges frequency spectrum) for corresponding feux rouges frequency spectrum, and green light has a green energy
With a green color point, blue energy is an integral area (i.e. the area under a curve of blue light frequency spectrum) for corresponding blue light frequency spectrum.Cause
This, blueness, green, the calculation of red light energy of display panel 11 are：
Wherein, BLU (λ) represents the Energy distribution frequency spectrum of backlight, and BCF (λ) expression blue filters portion penetrates frequency spectrum,
GCF (λ) represents the frequency spectrum that penetrates in green filter portion, and RCF (λ) represents the frequency spectrum that penetrates in red filter portion, and CELL (λ) represents display
Liquid crystal panel after the deduction chromatic filter layer of panel 11 (CF) penetrates frequency spectrum, and λ is wavelength, and 380 and 780 refer to calculate this integration
Wave-length coverage, it is for unit with nanometer (nm), and it integrates the blue and green light of gained, Red energies unit is light watt.Can from above
Know, frequency spectrum CELL (λ) can be penetrated by Separate designs to change backlight BLU (λ), the optical filtering portion CF (λ) of each color or liquid crystal
Or the difference arranged in pairs or groups mutually, to adjust the energy variation of each color to meet the white color point specification of design requirement, fill display
Putting 1 has preferable display quality and lifts product competitiveness.Therefore, as the difference of white color point specification, RGB color are set
Meter will be different, that is, the design of RGB color point and energy proportion would also vary from.Therefore, the present invention wishes to pass through
The ratio of scientific adjustment RGB energy controls the variation of color dot, to reach the white color point specification of design requirement.
It refer to shown in Fig. 3 A, a CIE 1931xy corresponding to its light launched for the display panel 11 of the present invention
The schematic diagram of chromaticity coordinate.Wherein, on the line of the spectrum locus line of the chromatic diagrams of CIE 1931 with belonging to physical presence in scope
Color, as real color (real color), conversely, the chroma point outside colourity spectrum locus line actually and is not present, be
False colour (imaginary color).
In CIE 1931xy chromaticity coordinates, in order to meet the color designs close to sRGB specifications, with sRGB specifications
The substantially same tone (hue) of green color point and toward high colour gamut direction extension (i.e. along sRGB green color point it is substantial homochromy
Outside is transferred to extend), make display panel 11 that there is high colour gamut and preferable display quality, display device 1 of the invention is design, by
The green color measured by green light that display panel 11 is sent when highest gray scale (such as 255 gray scales) shows green picture
Light energy, and the blue ray that display panel 11 is sent when highest gray scale (such as 255 gray scales) shows blue picture
In blue coloured light energy, be the ratio for controlling green energy and blue energy between 0.7 and 1.5, then the institute of display panel 11
The green color point sent corresponds in the real color range of CIE 1931xy chromaticity coordinates, and green color point coordinate range is between side
Formula y=-48.85x2+ 21.987x -1.7766 (equation A1) and equation y=-48.85x2(the sides of+27.849x -3.2717
Formula B1) between, and y-coordinate is between 0.68 and 0.72.Except display panel 11 can be made to be maintained near to sRGB specifications
Green tone outside, green point of this scope compared to NTSC is closer to the position of 550nm wavelength on spectrum locus line, because human eye
To the sensitivity highest of the light of 550nm wavelength, therefore the penetrance of display can be lifted.
In addition, in CIE 1931xy chromaticity coordinates, in order to meet the color designs close to sRGB specifications, to be advised with sRGB
The red color point of model substantially with tone and toward high colour gamut direction extension (i.e. along sRGB red color point substantial same tone
Extend toward outside), make display panel 11 that there is high colour gamut and preferable display quality, display device 1 of the invention also designs, by showing
Show that panel 11 shows the red coloured light energy measured by the red light that red picture sent in highest gray scale (such as 255 gray scales)
Amount, and the blueness of the blue ray sent by display panel 11 in highest gray scale (such as 255 gray scales) display blue picture
In coloured light energy, be the ratio for controlling red energy and blue energy between 1.2 and 2.6, then display panel 11 is sent
Red color point correspond to CIE 1931xy chromaticity coordinates real color range in, red color point coordinate range is between equation y
=-2.021x2+ 2.1871x -0.2218 (equation C1) and equation y=-2.021x2(the equations of+2.1871x -0.2618
D1 between), and x is between 0.66 and 0.70.Except display panel 11 can be made to be maintained near to the red tone of sRGB specifications
Outside, the lifting of excitation make it that color performance is more bright-coloured.
In addition, in CIE 1931xy chromaticity coordinates, in order to meet the color designs of sRGB specifications, to approach sRGB specifications
Blue substantive color dot, make display panel 11 that there is high colour gamut and preferable display quality, display device 1 of the invention is design,
The blueness measured by blue ray sent as display panel 11 when highest gray scale (such as 255 gray scales) shows blue picture
Coloured light energy, and the blue color point that display panel 11 is sent corresponds in the real color range of CIE 1931xy chromaticity coordinates, it is blue
Color color point coordinates scope is between equation y=-168.72x2+ 50.312x -3.635 (equation E1) and equation y=-
168.72x2Between+63.81x -5.9174 (equation F1), y-coordinate is between 0.04 and 0.08.
Because display application is extensive, for the different factors such as different regional ethnic groups and size dimension, different colors is had
Point design.Therefore, if the white point of display wishes to be set in higher color temperature, in CIE 1931xy chromaticity coordinates, in order to accord with
The color designs of the nearly sRGB specifications of splice grafting, to extend with the green of sRGB specifications point substantially with tone and toward high colour gamut direction
(the substantial homochromy outside of being transferred to put along sRGB green extends), makes display panel 11 have high colour gamut and preferably display
Quality, display device 1 of the invention are designs, and green picture is shown in highest gray scale (such as 255 gray scales) by display panel 11
When the green light that is sent measured by green coloured light energy, and display panel 11 is in highest gray scale (such as 255 gray scales)
It is to control green energy and the ratio of blue energy to be situated between in the blue coloured light energy for the blue ray that display blue picture is sent
Between 0.7 and 1.2, then the green color point that display panel 11 is sent corresponds to the real color range of CIE 1931xy chromaticity coordinates
It is interior, and green color point coordinate range is between equation -48.85x2+ 21.987x -1.7766 (equation A1) and equation y
=-48.85x2Between+27.849x -3.2717 (equation B1), and y is between 0.68 and 0.72.Preferably, green energy
More between 0.75 and 1.1, and as shown in Fig. 3 B enlarged drawing, green color point coordinate range is more situated between ratio with blue energy
In equation y=-48.85x2+ 23.452x -2.1174 (equation A2) and equation y=-48.85x2+26.383x–2.8649
Between (equation B2), y-coordinate is more between 0.69 and 0.71.Except display panel 11 can be made to be maintained near to sRGB specifications
Green tone outside, green point of this scope compared to NTSC is closer to the position of 550nm wavelength on spectrum locus line, because human eye
To the sensitivity highest of the light of 550nm wavelength (pure green glow), therefore the penetrance of display can be lifted.
In addition, in CIE 1931xy chromaticity coordinates, in order to meet the color designs close to sRGB specifications, to be advised with sRGB
The red point of model is substantially with tone and toward the extension of high colour gamut direction (i.e. along the red substantial same tone put close to sRGB
Extend toward outside), make display panel 11 that there is high colour gamut and preferable display quality, display device 1 of the invention is design, by showing
Show the red coloured light measured by the red light that panel 11 is sent when highest gray scale (such as 255 gray scales) shows red picture
Energy, and display panel 11 show the blueness of blue ray that blue picture sent in highest gray scale (such as 255 gray scales)
In coloured light energy, be the ratio for controlling red energy and blue energy between 1.2 and 1.7, then display panel 11 is sent
Red color point correspond in the real color range of CIE 1931xy chromaticity coordinates, and red color point coordinate range is between equation
Y=-2.021x2+ 2.1871x -0.2218 (equation C1) and equation y=-2.021x2(the equations of+2.1871x -0.2618
D1 between), x coordinate is between 0.66 and 0.70.Preferably, the ratio of red energy and blue energy more between 1.25 with
Between 1.6, and as shown in Fig. 3 C enlarged drawing, red color point coordinate range is more between equation y=-2.021x2+2.1871x–
0.2318 (equation C2) and equation y=-2.021x2Between+2.1871x -0.2518 (equation D2), x coordinate more between
Between 0.67 and 0.69.In addition to it can make the red tone that display panel 11 is maintained near to sRGB specifications, because human eye is to red
The excitation that the color distortion degree identification of color is more obvious therefore red compared to NTSC or sRGB is lifted so that what color showed
It is more bright-coloured.
In addition, in CIE 1931xy chromaticity coordinates, in order to meet the color designs close to sRGB specifications, to approach sRGB
The blueness of specification substantially homochromy toning point, makes display panel 11 have high colour gamut and preferable display quality, display of the invention
Device 1 is to design, the blue ray sent by display panel 11 when highest gray scale (such as 255 gray scales) shows blue picture
Measured blue coloured light energy, and the blue color point that is sent of display panel 11 corresponds to the reality of CIE 1931xy chromaticity coordinates
In color range, blue color point coordinate range is between equation y=-168.72x2+ 50.312x -3.635 (equation E1) and side
Formula y=-168.72x2Between+63.81x -5.9174 (equation F1), x coordinate is between 0.04 and 0.08.Preferably
Person, as shown in Fig. 3 D enlarged drawing, blue color point coordinate range is more between equation y=-168.72x2+53.687x–4.155
(equation E2) and equation y=-168.72x2Between+60.436x -5.2962 (equation F2), y-coordinate more between 0.05 with
Between 0.07.
In in this case, the x coordinate that the light corresponds to the white point of CIE 1931xy chromaticity coordinates be between 0.28 ±
In 0.010, and y-coordinate is in 0.29 ± 0.010.In other words, light corresponds to the white point of CIE 1931xy chromaticity coordinates
Coordinate is (0.28,0.29), and the mobility scale of the x of white point and y-coordinate is in ± 0.010, and its corresponding RGB energy ratio
Respectively：0.7≤G/B≤1.2 and 1.2≤R/B≤1.7.
In addition, it refer to shown in Fig. 4, a CIE corresponding to its light launched for the display panel 11 of the present invention
The schematic diagram of 1976u'v' chromaticity coordinates.
As shown in figure 4, in order that by the emitted light of display panel 11 under conditions of highest gray scale (such as 255 gray scales)
Measured coloured light has preferable color uniformity, and the present invention will also meet the color dot of above-mentioned energy ratio (G/B, R/B) scope
CIE 1976u'v' chromaticity coordinates are converted into by CIE 1931xy chromaticity coordinates.Wherein, in CIE 1976u'v' chromaticity coordinates,
In order to meet the color designs close to sRGB specifications, with green color point, red color point and the blue color point essence with sRGB specifications
On with tone and toward high colour gamut direction extend, make display panel 11 that there is high colour gamut and preferable display quality, the green light pair
Should be in CIE 1976u'v' chromaticity coordinates, and the u' coordinate ranges of green color point are between 0.05 and 0.1, v' coordinates are
More than 0.55, the red light correspond to CIE 1976u'v' chromaticity coordinates on, and the u' coordinate ranges of red color point be between
Between 0.5 and 0.55, v' coordinates are greater than 0.5, and the blue ray corresponds in CIE 1976u'v' chromaticity coordinates, and blueness
The u' coordinates of color dot are between 0.15 and 0.2, and v' coordinates are between 0.1 and 0.2.Sat from CIE 1976u'v' colourities
From the point of view of mark, red chromaticity range substantially extends toward high colour gamut, because color distortion degree identification of the human eye to red is more obvious,
Therefore the excitation of red is lifted in the design, human eye can be caused to feel that the color of display panel is more bright-coloured, show picture
Face quality is also more lifted.
Because coloured light energy frequency spectrum can penetrate frequency spectrum to adjust by design optical filtering portion CF (λ), filter is adjusted so can pass through
Material category (such as R254, R177, G7, G36, G58, Y150, Y138, Y139, the B15 in light portion:6 etc.) and its percentage by weight
To adjust energy variation.Such as can design blue color filter layer penetrates spectrum peak between 440nm between 460nm, green filter
Photosphere penetrates spectrum peak between 500nm between 550nm, and adjusts green energy of the display panel 11 when highest gray scale
Relative to the ratio of blue light energy between 0.7 to 1.2, and red energy and the blue energy ratio be between 1.2 with
Between 1.7 so that green color point coordinate corresponds to the scope of the chromaticity coordinates of CIE 1931 between equation y=-48.85x2+
21.987x -1.7766 (equation A1) and equation y=-48.85x2Between+27.849x -3.2717 (equation B1), and y
Coordinate is between 0.68 and 0.72, red color point coordinate range is between equation y=-2.021x2+2.1871x–0.2218
(equation C1) and equation y=-2.021x2Between+2.1871x -0.2618 (equation D1), and x coordinate between 0.66 with
Between 0.70, and blue color point coordinate range is between equation y=-168.72x2+ 50.312x -3.635 (equation E1) with
Equation y=-168.72x2Between+63.81x -5.9174 (equation F1), and y-coordinate is between 0.04 and 0.08.Separately
Outside, in meeting above-mentioned energy ratio, green light corresponds in CIE 1976u'v' chromaticity coordinates, and the u' coordinate models of green color point
It is between 0.05 and 0.1 to enclose, and v' coordinates are greater than 0.55, and red light corresponds in CIE 1976u'v' chromaticity coordinates,
And the u' coordinate ranges of red color point are between 0.5 and 0.55, v' coordinates are greater than 0.5, and blue ray corresponds to CIE
In 1976u'v' chromaticity coordinates, and the u' coordinates of blue color point are between 0.15 and 0.2, and v' coordinates are between 0.1 and 0.2
Between.Whereby, you can make the light that display panel 11 is launched and the substantially same tone of sRGB specifications, and past high colour gamut direction
Extension, make display panel 11 that there is high colour gamut and preferable display quality and lift product competitiveness.
In addition, also energy proportion can be adjusted by designing backlight BLU (λ).For example, when backlight is taken for blue led
With red with green emitting phosphor species when, its backlight has a frequency spectrum, by changing the material category of fluorescent material or its is heavy
Percentage is measured, or changes the electric current of input backlight, the peak value that can design blue light is generally between 440nm between 460nm, green
The peak value of the radiation spectra of color fluorescent material is generally between 500nm to 550nm, and the peak value of the radiation spectra of red fluorescence powder is substantially situated between
In 600nm to 660nm；Or such as backlight be blue led arrange in pairs or groups yellow fluorescent powder when, also can be by changing fluorescent material
Material category or its percentage by weight, or change the electric current of input backlight, the peak value of its blue waveform can be generally between
For 440nm between 460nm, the peak value of the radiation spectra of yellow fluorescent powder is generally between 550nm to 580nm, to adjust each color
Highest gray scale under green energy and blue light energy and the ratio of Red energies and blue light energy.In addition, it can also design difference
The liquid crystal panel of colored pixels penetrates the mutual collocation of frequency spectrum CELL (λ) or above-mentioned condition to adjust energy proportion.In addition, backlight
The energy part of the backlight of module can reach above-mentioned scope by adjusting species composition and its ratio of its fluorescent material, make
Display panel 11 has high colour gamut and preferable display quality and lifts product competitiveness.Wherein, fluorescent material can be for example comprising vulcanization
Matter fluorescent powder, Nitride phosphor or silicates fluorescent material etc..
In addition, because display application is extensive, for the different factors such as different regional ethnic groups and size dimension, difference is had
Color dot design.Therefore, if the white point of display wishes to be set in relatively low colour temperature design, in CIE 1931xy chromaticity coordinates
On, in order to meet the color designs close to sRGB specifications, with the green point with sRGB specifications substantially with tone and past high colour gamut
Direction extension (the substantial homochromy outside of being transferred to put along sRGB green extends), make display panel 11 with high colour gamut and
Preferable display quality, display device 1 of the invention are designs, are shown by display panel 11 in highest gray scale (such as 255 gray scales)
Green coloured light energy measured by the green light sent during green picture, and display panel 11 in highest gray scale (such as
255 gray scales) show in the blue coloured light energy for the blue ray that blue picture is sent, it is control green energy and blue energy
Ratio between 1.0 and 1.5, then display panel 11 is sent green light corresponds to CIE 1931xy chromaticity coordinates
In real color range, and green color point coordinate range is between equation -48.85x2+ 21.987x -1.7766 (equation A1) with
Equation y=-48.85x2Between+27.849x -3.2717 (equation B1), and y is between 0.68 and 0.72.Preferably,
The ratio of green energy and blue energy is more between 1.1 and 1.4, and as shown in Fig. 3 B enlarged drawing, green color point coordinate
Scope is more between equation y=-48.85x2+ 23.452x -2.1174 (equation A2) and equation y=-48.85x2+
Between 26.383x -2.8649 (equation B2), y-coordinate is more between 0.69 and 0.71.Except that can maintain display panel 11
Close to outside the green tone of sRGB specifications, green point of this scope compared to NTSC is closer to 550nm wavelength on spectrum locus line
Position because human eye is to the sensitivity highest of the light of 550nm wavelength (pure green glow), therefore the penetrance of display can be lifted.
In addition, in CIE 1931xy chromaticity coordinates, in order to meet the color designs close to sRGB specifications, to be advised with sRGB
The red point of model substantially with tone and toward the extension of high colour gamut direction (i.e. along sRGB it is red put it is substantial it is homochromy be transferred to outside
Side extends), make display panel 11 that there is high colour gamut and preferable display quality, display device 1 of the invention is design, by display surface
The red coloured light energy measured by red light that plate 11 is sent when highest gray scale (such as 255 gray scales) shows red picture
Amount, and display panel 11 show the blue color of blue ray that blue picture sent in highest gray scale (such as 255 gray scales)
In light energy, be the ratio for controlling red energy and blue energy between 2.0 and 2.6, then display panel 11 is sent
Red light corresponds in the real color range of CIE 1931xy chromaticity coordinates, and red color point coordinate range is between equation y
=-2.021x2+ 2.1871x -0.2218 (equation C1) and equation y=-2.021x2(the equations of+2.1871x -0.2618
D1 between), x coordinate is between 0.66 and 0.70.Preferably, the ratio of red energy and blue energy more between 2.1 with
Between 2.5, and as shown in Fig. 3 C enlarged drawing, red color point coordinate range is more between equation y=-2.021x2+2.1871x–
0.2318 (equation C2) and equation y=-2.021x2Between+2.1871x -0.2518 (equation D2), x coordinate more between
Between 0.67 and 0.69.In addition to it can make the red tone that display panel 11 is maintained near to sRGB specifications, because human eye is to red
The excitation that the color distortion degree identification of color is more obvious therefore red compared to NTSC or sRGB is lifted so that what color showed
It is more bright-coloured.
In addition, in CIE 1931xy chromaticity coordinates, in order to meet the color designs close to sRGB specifications, to approach sRGB
The blueness of specification substantially homochromy toning point, makes display panel 11 have high colour gamut and preferable display quality, display of the invention
Device 1 is to design, the blue ray sent by display panel 11 when highest gray scale (such as 255 gray scales) shows blue picture
Measured blue coloured light energy, and the blue ray that is sent of display panel 11 corresponds to the reality of CIE 1931xy chromaticity coordinates
In color range, blue color point coordinate range is between equation y=-168.72x2+ 50.312x -3.635 (equation E1) and side
Formula y=-168.72x2Between+63.81x -5.9174 (equation F1), y-coordinate is between 0.04 and 0.08.Preferably
Person, as shown in Fig. 3 D enlarged drawing, blue color point coordinate range is more between equation y=-168.72x2+53.687x–4.155
(equation E2) and equation y=-168.72x2Between+60.436x -5.2962 (equation F2), y-coordinate more between 0.05 with
Between 0.07.
In in this case, the x coordinate that the light corresponds to the white point of CIE 1931xy chromaticity coordinates be between 0.313 ±
In 0.010, and y-coordinate is in 0.329 ± 0.010.In other words, light corresponds to the white point of CIE 1931xy chromaticity coordinates
Coordinate is (0.313,0.329), and the mobility scale of the x of white point and y-coordinate is in ± 0.010, and its corresponding RGB energy
Than being respectively：1.0≤G/B≤1.5 and 2.0≤R/B≤2.6.
In addition, referring again to shown in Fig. 4, in order that by the emitted light of display panel 11 in highest gray scale (such as 255 ashes
Degree) under conditions of measured coloured light there is preferable color uniformity, the present invention will also meet above-mentioned energy ratio (G/B, R/B)
The color dot of scope is converted into CIE 1976u'v' chromaticity coordinates by CIE 1931xy chromaticity coordinates.Wherein, in CIE 1976u'v'
In chromaticity coordinate, in order to meet the color designs close to sRGB specifications, with the green color point, red color point and indigo plant with sRGB specifications
Color color dot extends substantially with tone and toward high colour gamut direction, display panel 11 is had high colour gamut and preferable display quality, green
Color color dot correspond to CIE 1976u'v' chromaticity coordinates on, and the u' coordinate ranges of green color point be between 0.05 and 0.1,
V' coordinates are greater than 0.55, and red color point corresponds in CIE 1976u'v' chromaticity coordinates, and the u' coordinate ranges of red color point
It is between 0.5 and 0.55, v' coordinates are greater than 0.5, and blue color point corresponds in CIE 1976u'v' chromaticity coordinates, and
The u' coordinates of blue color point are between 0.15 and 0.2, and v' coordinates are between 0.1 and 0.2.From CIE 1976u'v' colors
Spend from the point of view of coordinate, red chromaticity range substantially extends toward high colour gamut, because color distortion degree identification of the human eye to red is more
Substantially, therefore in the design the excitation of red is lifted, human eye can be caused to feel that the color of display panel is more bright-coloured, shown
Show that picture quality is also more lifted.
Because energy can penetrate frequency spectrum to adjust by design optical filtering portion CF (λ), so can be by adjusting the material in optical filtering portion
Material species (such as R254, R177, G7, G36, G58, Y150, Y138, Y139, B15:6 etc.) and its percentage by weight adjusts energy
Amount change.Such as can design blue color filter layer penetrates spectrum peak between 440nm between 460nm, green color filter is worn
Saturating spectrum peak between 550nm, and adjusts green energy of the display panel 11 when highest gray scale relative to indigo plant between 500nm
The ratio of light energy between 1.0 to 1.5, and the ratio of red energy and the blue energy be between 2.0 and 2.6,
So that green color point coordinate range is between equation y=-48.85x2+ 21.987x -1.7766 (equation A1) and equation y
=-48.85x2Between+27.849x -3.2717 (equation B1), and y-coordinate is between 0.68 and 0.72, red color point is sat
Scope is marked between equation y=-2.021x2+ 2.1871x -0.2218 (equation C1) and equation y=-2.021x2+
Between 2.1871x -0.2618 (equation D1), and x coordinate is between 0.66 and 0.70, and blue color point coordinate range is situated between
In equation y=-168.72x2+ 50.312x -3.635 (equation E1) and equation y=-168.72x2+63.81x–5.9174
Between (equation F1), and y-coordinate is between 0.04 and 0.08.In addition, in meeting above-mentioned energy ratio, green light corresponds to
In CIE 1976u'v' chromaticity coordinates, and the u' coordinate ranges of green color point are between 0.05 and 0.1, and v' coordinates are greater than
0.55, red light correspond to CIE 1976u'v' chromaticity coordinates on, and the u' coordinate ranges of red color point be between 0.5 with
Between 0.55, v' coordinates are greater than 0.5, and blue ray corresponds in CIE 1976u'v' chromaticity coordinates, and blue color point
U' coordinates are between 0.15 and 0.2, and v' coordinates are between 0.1 and 0.2.Whereby, you can sent out display panel 11
The light of injection and the substantially same tone of sRGB specifications, and extend toward high colour gamut direction, make display panel 11 have high colour gamut and
Preferable display quality and lift product competitiveness.
Because coloured light energy frequency spectrum can penetrate frequency spectrum to adjust by design optical filtering portion CF (λ), filter is adjusted so can pass through
Material category (such as R254, R177, G7, G36, G58, Y150, Y138, Y139, the B15 in light portion:6 etc.) and its percentage by weight
To adjust energy variation.Such as can design blue color filter layer penetrates spectrum peak between 440nm between 460nm, green filter
Photosphere penetrates spectrum peak between 500nm between 550nm, and adjusts green energy of the display panel 11 when highest gray scale
Relative to the ratio of blue light energy between 1.0 to 1.5, and red energy and the blue energy ratio be between 2.0 with
Between 2.6 so that for the u' coordinates of green color point between 0.05 and 0.1, v' coordinates are more than 0.55, the u' coordinates of red color point
Between 0.5 and 0.55, v' coordinates be more than 0.5, and blue color point u' coordinates between 0.15 and 0.2, v' coordinates
Between 0.1 and 0.2.Whereby, you can make the light that display panel 11 is launched and the same tone of three color dots of sRGB specifications,
And extend toward high colour gamut direction, make display panel 11 that there is high colour gamut and preferable display quality and lift product competitiveness.In addition,
The energy part of the backlight of backlight module can reach above-mentioned model by adjusting species composition and its ratio of its fluorescent material
Enclose, make display panel 11 that there is high colour gamut and preferable display quality and lift product competitiveness.
In addition, also energy proportion can be adjusted by designing backlight BLU (λ).For example, when backlight is taken for blue led
With red with green emitting phosphor species when, its backlight has a frequency spectrum, by changing the material category of fluorescent material or its is heavy
Percentage is measured, or changes the electric current of input backlight, the peak value that can design blue light is generally between 440nm between 460nm, green
The peak value of the radiation spectra of color fluorescent material is generally between 500nm to 550nm, and the peak value of the radiation spectra of red fluorescence powder is substantially situated between
In 600nm to 660nm；Or such as backlight be blue led arrange in pairs or groups yellow fluorescent powder when, also can be by changing fluorescent material
Material category or its percentage by weight, or change the electric current of input backlight, the peak value of its blue waveform can be generally between
For 440nm between 460nm, the peak value of the radiation spectra of yellow fluorescent powder is generally between 550nm to 580nm, to adjust each color
Highest gray scale under green energy and blue light energy and the ratio of Red energies and blue light energy.In addition, it can also design difference
The liquid crystal panel of colored pixels penetrates the mutual collocation of frequency spectrum CELL (λ) or above-mentioned condition to adjust energy proportion.In addition, backlight
The energy part of the backlight of module can reach above-mentioned scope by adjusting species composition and its ratio of its fluorescent material, make
Display panel 11 has high colour gamut and preferable display quality and lifts product competitiveness.Wherein, fluorescent material can be for example comprising vulcanization
Matter fluorescent powder, Nitride phosphor or silicate fluorescent powder etc..
In addition, the display panel 11 of the present invention can also apply other technologies and have different change aspects, such as can be by coloured silk
Color filtering optical layer is arranged at the side (color filter on array, COA) of thin film transistor (TFT) array or by thin film transistor (TFT)
Array is arranged on colored optical filtering substrates (TFT on CF, also known as TOC or arrayon CF), is not any limitation as.
In summary, in the display device of the present invention, display panel (is 255 for 8-bit color ranges in highest gray scale
Gray scale) one green picture of display when launch a green light, green light has a green energy and a green color point, display
Panel launches a blue ray when highest gray scale shows a blue picture, and blue ray has a blue energy and a blueness
Color dot, green energy and blue energy ratio are between 0.7 and 1.5, and green color point is sat corresponding to CIE 1931xy colourities
Put on, green color point coordinate range is between equation y=-48.85x2+ 21.987x -1.7766 and equation y=-48.85x2
Between+27.849x -3.2717, y-coordinate is between 0.68 and 0.72.Whereby, above-mentioned color dot scope meets close to sRGB and advised
The color designs of model, and substantially extend with the color dot of sRGB specifications with tone and past high colour gamut direction so that of the invention is aobvious
Showing device has high colour gamut and preferable display quality and can lift product competitiveness.
Illustrative is the foregoing is only, rather than is restricted person.Any spirit and scope without departing from the present invention, and to it
The equivalent modifications of progress or change, are intended to be limited solely by claims.
Claims (10)
1. a kind of display device, it is characterized in that, the display device includes：
One display panel, the display panel launches a red light when highest gray scale shows a red picture, described red
Coloured light line has a red color point, and the red color point corresponds in CIE 1931xy chromaticity coordinates, the red color point coordinate
Scope is between equation y=-2.021x2+ 2.1871x -0.2218 and equation y=-2.021x2+ 2.1871x -0.2618 it
Between, x coordinate is between 0.66 and 0.70.
2. display device as claimed in claim 1, it is characterized in that, the display panel shows a blue picture in highest gray scale
When launch a blue ray, the blue ray has a blue energy and a blue color point, and the blue energy corresponds to institute
An integral area of a blue light frequency spectrum of light is stated, the blue light frequency spectrum is when the display panel only shows blue light highest gray scale
Frequency spectrum obtained by during picture, and the integral area of the blue light frequency spectrum is the area under the blue light spectrum curve, it is described
Red light also has a red energy, and the red energy corresponds to an integral area of a feux rouges frequency spectrum of the light, institute
Feux rouges frequency spectrum is stated as the frequency spectrum obtained by when the display panel only shows feux rouges highest gray scale picture, and the feux rouges frequency spectrum
The integral area is the area under the feux rouges spectrum curve, the red energy and the blue energy ratio be between
Between 1.2 and 2.6.
3. display device as claimed in claim 2, it is characterized in that, the red energy and the blue energy ratio more between
Between 1.2 and 1.7.
4. display device as claimed in claim 1, it is characterized in that, the display panel shows a green picture in highest gray scale
When launch a green light, the green light has a green energy and a green color point, and the green energy corresponds to institute
An integral area of a green glow frequency spectrum of light is stated, the green glow frequency spectrum is when the display panel only shows green glow highest gray scale
Frequency spectrum obtained by during picture, and the integral area of the green glow frequency spectrum is the area under the green glow spectrum curve, it is described
Display panel launches a blue ray when highest gray scale shows a blue picture, and the blue ray has a blue energy
Amount, the blue energy correspond to an integral area of a blue light frequency spectrum of the light, and the blue light frequency spectrum is when the display
Frequency spectrum obtained by when panel only shows blue light highest gray scale picture, and the integral area of the blue light frequency spectrum is the blue light
The ratio of area under spectrum curve, the green energy and blue energy is between 0.7 and 1.5.
5. display device as claimed in claim 4, it is characterized in that, the green energy and the ratio of the blue energy are more situated between
Between 0.75 and 1.1.
6. display device as claimed in claim 4, it is characterized in that, the green energy and the ratio of the blue energy are more situated between
Between 1.0 and 1.5.
7. display device as claimed in claim 4, it is characterized in that, the green color point corresponds to CIE1931xy chromaticity coordinates
On, the coordinate range of the green color point is between equation y=-48.85x2+ 21.987x -1.7766 and equation y=-
48.85x2Between+27.849x -3.2717, y-coordinate is between 0.68 and 0.72.
8. display device as claimed in claim 1, it is characterized in that, the red color point is sat corresponding to CIE 1976u'v' colourities
Put on, and the u' coordinate ranges of the red color point are between 0.5 and 0.55, v' coordinates are greater than 0.5.
9. display device as claimed in claim 1, it is characterized in that, the display panel shows a green picture in highest gray scale
When launch a green light, the green light has a green color point, and the green color point corresponds to CIE 1976u'v'
In chromaticity coordinate, and the u' coordinate ranges of the green color point are between 0.05 and 0.1, and v' coordinates are greater than 0.55.
10. display device as claimed in claim 1, it is characterized in that, the display panel shows that a blueness is drawn in highest gray scale
Launch a blue ray during face, the blue ray has a blue color point, and the blue color point corresponds to CIE 1976u'
In v' chromaticity coordinates, and the u' coordinates of the blue color point be between 0.15 and 0.2, v' coordinates be between 0.1 and 0.2 it
Between.
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| CN107561781B (en) | 2020-08-28 |
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