CN106647006B - A color filter, its manufacturing method, and display device - Google Patents
A color filter, its manufacturing method, and display device Download PDFInfo
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- CN106647006B CN106647006B CN201710084503.5A CN201710084503A CN106647006B CN 106647006 B CN106647006 B CN 106647006B CN 201710084503 A CN201710084503 A CN 201710084503A CN 106647006 B CN106647006 B CN 106647006B
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
- G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Filters (AREA)
Abstract
The present invention discloses a kind of colored filter and preparation method thereof, display device, and colored filter includes: substrate；First chromatic filter layer, including the first red filter area, the first green filter area, the transparent resin layer of three filter areas in the first blue filter area and interval；Flatness layer is covered on the first chromatic filter layer, and surface of the flatness layer far from substrate is flat；Second chromatic filter layer, including the second red filter area, the second green filter area, the black matrix of three filter areas in the second blue filter area and interval；First red filter area, the first green filter area, the first blue filter area, the orthographic projection of transparent resin layer on substrate are corresponded and are overlapped with the orthographic projection of the second red filter area, the second green filter area, the second blue filter area, black matrix on substrate；Second red filter area, the second green filter area, the second blue filter area are identical with the thickness of black matrix, and the beam projecting angle of the colored filter is larger, improve side view angle colour contamination problem.
Description
Technical field
The present invention relates to field of liquid crystal display more particularly to a kind of colored filter and preparation method thereof, display device.
Background technique
The features such as Thin Film Transistor-LCD is with its small size, low power consumption, no radiation, is widely used,
Its display panel includes the colored filter and array substrate to box setting, and is filled between color membrane substrates and array substrate
Liquid crystal.Wherein, colored filter (Color Filter, abbreviation CF) is for realizing the display of colour picture.
As shown in Figure 1, colored filter generally comprises: the black matrix (BM) 02 on substrate 01 and red is arranged in substrate 01
Color (R) filter area 031, green (G) filter area 032 and blue (B) filter area 033 cover the flat of black matrix 02 and filter area
Layer 04, and the support column 05 being arranged on flatness layer 04.And the planarization capability of flatness layer 04 is limited, when the Δ (film of R/G/B
The film thickness of thick BM) more than the planarization capability of flatness layer 04, it will be unable to smooth out segment difference, and in the prior art, each color filter area
Thickness it is inconsistent, for sprite, such as red monochromatic picture, light is from the blue pixel outgoing closed on, shooting angle θ
Negative correlation is presented with the film thickness of Δ (film thickness of the film thickness BM of R/G/B), flatness layer 04, in current colorized optical filtering, due to going out
It is smaller to penetrate angle, θ, it is difficult to meet the interior not colour mixture in 60 degree of side view angle, therefore it provides a kind of colour for improving side view angle colour contamination problem
Optical filter is particularly important.
Summary of the invention
The present invention provides a kind of colored filter and preparation method thereof, display device and will be far from substrate by hierarchical design
The film thickness of second chromatic filter layer of side is designed to consistent with black matrix film thickness, and the second chromatic filter layer is arranged far from substrate
Side, without being planarized, the angle of emergence of light is larger, can improve side view angle colour contamination problem, has above-mentioned colored filter
The picture effect of the display device of mating plate is preferable, and the method for making the colored filter simplifies production process, is effectively saved
Cost of manufacture.
Specific technical solution provided in an embodiment of the present invention is as follows:
A kind of colored filter, comprising:
Substrate；
First chromatic filter layer, first chromatic filter layer include the first red filter area, the first green filter area, and the
One blue filter area and for being spaced first red filter area, the first green filter area, between the first blue filter area
Transparent resin layer；
Flatness layer is covered on the first chromatic filter layer, and surface of the flatness layer far from substrate is flat；
Second chromatic filter layer, second chromatic filter layer include the second red filter area, the second green filter area, and the
Two blue filter areas and for being spaced second red filter area, the second green filter area, between the second blue filter area
Black matrix；
First red filter area, the first green filter area, the first blue filter area, transparent resin layer are on substrate
Orthographic projection and the second red filter area, the second green filter area, the second blue filter area, the orthographic projection one of black matrix on substrate
One corresponding and coincidence；
Second red filter area, the second green filter area, the second blue filter area are identical with the thickness of black matrix.
In above-mentioned colored filter, since the first red filter area, the first green filter area, the first blue filter area are leaned on
Nearly substrate, the second red filter area, the second green filter area, the second blue filter area far from substrate, and the second red filter area,
Second green filter area, the second blue filter area are identical with the thickness of black matrix, are made by hierarchical design far from one side of substrate
The second red filter area, the second green filter area, the second blue filter area it is identical with the thickness of black matrix, it is flat without carrying out
Change and guarantee that black matrix film surface is directly flushed with the second red filter area, the second green filter area, the second blue filter area, and without flat
Smooth layer, so that Δ (R/G/B BM)=0, OC=0, and it is beam projecting angle, θ and Δ (film thickness of the film thickness BM of R/G/B), flat
Negative correlation is presented in the film thickness of smooth layer, so that the angle of emergence of light is larger, improves side view angle colour contamination problem；Furthermore it is possible to logical
The R/G/B of the first chromatic filter layer and the second chromatic filter layer is crossed using different color blockings, colour mixture is carried out, that is, using two
Kind of R/G/B colour mixture becomes new R/G/B, i.e., without developing new color blocking, the not only less quantity of color resistance of color filter can also
To meet new chromaticity requirements using the colour mixture of the different proportion of existing color blocking at any time, thus the color effect of colored filter compared with
It is good.
Preferably, the red wavelength range that first red filter area and the second red filter area can penetrate has weight
It is folded.
Preferably, the first green filter area has overlapping with the green wavelength that the second green filter area can penetrate.
Preferably, the blue wavelength range that first blue filter area and the second blue filter area can penetrate has weight
It is folded.
Preferably, second chromatic filter layer with a thickness of 1.15 microns~1.5 microns.
Preferably, each not phase of the thickness in first red filter area, the first green filter area and the first blue filter area
Together.
Preferably, the maximum gauge of the flatness layer is 1.5 microns~2.0 microns.
The present invention also provides a kind of display devices, including as above described in any item colored filters.
Since the angle of emergence of the light of above-mentioned colored filter is larger, side view angle colour contamination problem can be improved, and color is imitated
Fruit is preferable, and therefore, the picture effect of the display device with above-mentioned colored filter is preferable.
The present invention also provides a kind of production methods of colored filter, comprising:
It is formed on the substrate the first chromatic filter layer, first chromatic filter layer includes the first red filter area, and first
Green filter area, the first blue filter area and for be spaced first red filter area, the first green filter area, first blue
Transparent resin layer between filter area；
Flatness layer is formed on first chromatic filter layer, surface of the flatness layer far from substrate is flat；
The second chromatic filter layer is formed on the flat laye, and second chromatic filter layer includes the second red filter
Area, the second green filter area, the second blue filter area and for be spaced second red filter area, the second green filter area,
Black matrix between second blue filter area, and first red filter area, the first green filter area, the first blue filter
The orthographic projection of area, transparent resin layer on substrate and the second red filter area, the second green filter area, the second blue filter area,
The orthographic projection of black matrix on substrate is corresponded and is overlapped, and second red filter area, the second green filter area, second
Blue filter area is identical with the thickness of black matrix.
In the production method of colored filter, by hierarchical design, the second chromatic filter layer of one side of substrate will be far from
Film thickness be designed to consistent with black matrix film thickness, the second chromatic filter layer is arranged far from the side of substrate, flat without carrying out
Change, the angle of emergence of light is larger, can improve side view angle colour contamination problem, simplify production process, be effectively saved cost of manufacture.
Preferably, the red wavelength range that first red filter area and the second red filter area can penetrate has weight
It is folded；And/or first green filter area have with the green wavelength that the second green filter area can penetrate it is overlapping；And/or institute
It states the first blue filter area and has with the blue wavelength range that the second blue filter area can penetrate and is overlapping.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of colored filter in the prior art；
Fig. 2 is the structural schematic diagram of colored filter in the embodiment of the present invention；
Fig. 3 is that the light of colored filter in the embodiment of the present invention propagates schematic diagram；
Fig. 4 is colored filter production flow diagram in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in FIG. 2 and 3, a kind of colored filter, comprising:
Substrate 1；
First chromatic filter layer, the first chromatic filter layer include the first red filter area 21, the first green filter area 22, and the
One blue filter area 23 and for be spaced the first red filter area 21, the first green filter area 22, the first blue filter area 23 it
Between transparent resin layer 24；
Flatness layer 4 is covered on the first chromatic filter layer, and surface of the flatness layer far from substrate is flat；
Second chromatic filter layer, the second chromatic filter layer include the second red filter area 31, the second green filter area 32, and the
Two blue filter areas 33 and for be spaced the second red filter area 31, the second green filter area 32, the second blue filter area 33 it
Between black matrix 34；
First red filter area 21, the first green filter area 22, the first blue filter area 23, transparent resin layer 24 are in substrate
Orthographic projection on 1 is being served as a contrast with the second red filter area 31, the second green filter area 32, the second blue filter area 33, black matrix 34
Orthographic projection on bottom 1 is corresponded and is overlapped；
The thickness phase in the second red filter area 31, the second green filter area 32, the second blue filter area 33 and black matrix 34
Together.
In above-mentioned colored filter, due to the first red filter area 21, the first green filter area 22, the first blue filter
Area 23 close to substrate 1, the second red filter area 31, the second green filter area 32, the second blue filter area 33 far from substrate 1, and
Second red filter area 31, the second green filter area 32, the second blue filter area 33 are identical with the thickness of black matrix 34, by dividing
Floor designs so that the second red filter area 31, the second green filter area 32,33 and of the second blue filter area far from 1 side of substrate
The thickness of black matrix 34 is identical, without carry out planarization guarantee 34 film surface of black matrix directly with the second red filter area 31, second
Green filter area 32, the second blue filter area 33 flush, and without flatness layer 4, so that Δ (R/G/B BM)=0, OC=0, and
Negative correlation is presented in the maximum film thickness of beam projecting angle, θ and Δ (film thickness of the film thickness BM of R/G/B), flatness layer 4, so that light
The angle of emergence of line is larger, improves side view angle colour contamination problem；Furthermore it is possible to pass through the first chromatic filter layer and the second chromatic filter layer
R/G/B use different color blockings, carry out colour mixture, that is, using two kinds of R/G/B colour mixtures become new R/G/B, that is, be not necessarily to
Develop new color blocking, the not only less quantity of color resistance of color filter can also be at any time using the different proportion of existing color blocking
Colour mixture meets new chromaticity requirements, therefore the color effect of colored filter is preferable.
On the basis of above-mentioned colored filter, in order to pass through existing color blocking on the basis of not developing new color blocking
Collocation colour mixture achievees the effect that new red resistance, in a kind of preferred embodiment, the first red filter area 21 and the second red filter
The red wavelength range that light area 31 can penetrate has overlapping.
First red filter area 21 is identical as the red wavelength range that the second red filter area 31 can penetrate or has portion
Divide overlapping.Different color blockings is used from the second red filter area 31 by the first red filter area 21, carries out colour mixture, that is,
Become new red using two kinds of red colour mixtures, i.e., without developing new color blocking, the not only less quantity of color resistance of color filter,
New chromaticity requirements can also be met using the colour mixture of the different proportion of existing color blocking at any time, therefore the color of colored filter is imitated
Fruit is preferable.
On the basis of above-mentioned colored filter, in order to pass through existing color blocking on the basis of not developing new color blocking
Collocation colour mixture achievees the effect that new green resistance, in a kind of preferred embodiment, the first green filter area 22 and the second green filter
The green wavelength that light area 32 can penetrate has overlapping.
First green filter area 22 is identical as the green wavelength that the second green filter area 32 can penetrate or has portion
Divide overlapping.Different color blockings is used from the second green filter area 32 by the first green filter area 22, carries out colour mixture, that is,
Become new green using two kinds of green colour mixtures, i.e., without developing new color blocking, the not only less quantity of color resistance of color filter,
New chromaticity requirements can also be met using the colour mixture of the different proportion of existing color blocking at any time, therefore the color of colored filter is imitated
Fruit is preferable.
On the basis of above-mentioned colored filter, in order to pass through existing color blocking on the basis of not developing new color blocking
Collocation colour mixture achievees the effect that new blue resistance, in a kind of preferred embodiment, the first blue filter area 23 and the second blue filter
The blue wavelength range that light area 33 can penetrate has overlapping.
First blue filter area 23 is identical as the blue wavelength range that the second blue filter area 33 can penetrate or has portion
Divide overlapping.Different color blockings is used from the second blue filter area 33 by the first blue filter area 23, carries out colour mixture, that is,
Become new blue using two kinds of green colour mixtures, i.e., without developing new color blocking, the not only less quantity of color resistance of color filter,
New chromaticity requirements can also be met using the colour mixture of the different proportion of existing color blocking at any time, therefore the color of colored filter is imitated
Fruit is preferable.
When improving the coloration of colored filter, in the prior art, since colored filter can not be improved by adjusting film thickness
The coloration of mating plate, it is necessary to develop new color blocking.When there are many type of color blocking when production, when needing more
Between, production capacity is wasted, and the period of new color blocking exploitation is also very long, it is difficult to meet timeliness.And colored filter provided by the invention
It, can be by that will make in the second chromatic filter layer due to using the first chromatic filter layer and the second chromatic filter layer hierarchical design
The color blocking type of R2/G2/B2 is different with the color blocking type of R1/G1/B1 in the first chromatic filter layer, is carried out by existing color blocking
Collocation colour mixture achievees the effect that new color blocking, to not have to develop new color blocking.
In a kind of preferred embodiment, the second chromatic filter layer with a thickness of 1.15 microns~1.5 microns.Second colored filter
The second red filter area 31 in photosphere, the second green filter area 32, the second blue filter area 33 and red for being spaced second
Filter area 31, the second green filter area 32, the second blue filter area 33 black matrix 34 thickness it is identical, and the value of thickness can
With preferably 1.15 microns, 1.2 microns, 1.25 microns, 1.3 microns, 1.35 microns, 1.4 microns, 1.45 microns, 1.5 microns.
In a kind of embodiment, the thickness in the first red filter area, the first green filter area and the first blue filter area is each
It is not identical.
Specifically, the maximum gauge of flatness layer 4 is 1.5 microns~2.0 microns.In order to smooth out the pixel fragment of R1/G1/B1
The maximum gauge of difference, flatness layer 4 can preferably 1.5 microns, 1.6 microns, 1.7 microns, 1.8 microns, 1.9 microns, 2.0 microns.
The present invention also provides a kind of display devices, including colored filter any one of as above.
Since the angle of emergence of the light of above-mentioned colored filter is larger, side view angle colour contamination problem can be improved, and color is imitated
Fruit is preferable, and therefore, the picture effect of the display device with above-mentioned colored filter is preferable.
As shown in figure 4, the present invention also provides a kind of production methods of colored filter, comprising:
Step S400: forming the first chromatic filter layer on substrate 1, and the first chromatic filter layer includes the first red filter area
21, the first green filter area 22, the first blue filter area 23 and for be spaced the first red filter area 21, the first green filter area
22, the transparent resin layer 24 between the first blue filter area 23；
Step S410: forming flatness layer 4 on the first chromatic filter layer, and the surface of the flatness layer 4 far from substrate is flat；
Step S420: forming the second chromatic filter layer on flatness layer 4, and the second chromatic filter layer includes the second red filter
Area 31, the second green filter area 32, the second blue filter area 33 and for be spaced the second red filter area 31, the second green filter
Black matrix 34 between area 32, the second blue filter area 33, and the first red filter area 21, the first green filter area 22, first
Blue filter area 23, orthographic projection of the transparent resin layer 24 on substrate 1 and the second red filter area 31, the second green filter area
32, the orthographic projection of the second blue filter area 33, black matrix 34 on substrate 1 is corresponded and is overlapped, and the second red filter area
31, the second green filter area 32, the second blue filter area 33 are identical with the thickness of black matrix 34.
In the production method of colored filter, by hierarchical design, the second chromatic filter layer of 1 side of substrate will be far from
Film thickness be designed to consistent with 34 film thickness of black matrix, the second chromatic filter layer is arranged far from the side of substrate 1, flat without carrying out
The angle of emergence of smoothization, light is larger, can improve side view angle colour contamination problem, simplify production process, be effectively saved and be fabricated to
This.By step S400, the first chromatic filter layer, institute are initially formed using common process such as coating/exposure/developments in 1 side of substrate
R1/G1/B1 film thickness in the first chromatic filter layer used=(R2/G2/B2 film in the second chromatic filter layer of film thickness needed for R/G/B
It is thick), wherein R2/G2/B2 film thickness=34 film thickness of black matrix；Guarantee that R2/G2/B2 film thickness is constant, by adjusting R1/G1/B1 film thickness
To control the coloration of colored filter；Then by step S410, one layer of flatness layer 4 is carried out on the first chromatic filter layer and is applied
Cloth, between 1.5 microns~2.0 microns of maximum film thickness of flatness layer 4, to smooth out the pixel segment difference of R1/G1/B1；Finally by step
Rapid S420 prepares the second chromatic filter layer on flatness layer 4, the second red filter area 31, second in the second chromatic filter layer
Green filter area 32, the second blue filter area 33 are identical with the thickness of black matrix 34, and in 1.15 microns~1.5 microns.
In a kind of preferred embodiment, further includes:
The first red filter area 21, the first green filter area 22, the first blue filter are formed on substrate 1 using patterning processes
Light area 23 and transparent resin for being spaced the first red filter area 21, the first green filter area 22, the first blue filter area 23
Layer 24；And/or the second red filter area 31 is formed on flatness layer 4 using patterning processes, and the second green filter area 32, second
Blue filter area 33 and for be spaced the second red filter area 31, the second green filter area 32, the second blue filter area 33 it is black
Matrix 34.
It forms the first chromatic filter layer on substrate 1 and the second chromatic filter layer can use patterning processes preparation can also be with
It can satisfy the preparation process of requirement using other.
In a kind of preferred embodiment, feux rouges wave that the first red filter area 21 and the second red filter area 31 can penetrate
Long range has overlapping；And/or first the green wavelength that can be penetrated with the second green filter area 32 of green filter area 22 have
Overlapping；And/or first blue filter area 23 have with the blue wavelength range that the second blue filter area 33 can penetrate it is overlapping.
Different color blockings is used by the R/G/B of the first chromatic filter layer and the second chromatic filter layer, carries out colour mixture, i.e. phase
When in becoming new R/G/B using two kinds of R/G/B colour mixtures, i.e., without developing new color blocking, not only less color resistance of color filter
Quantity, can also can collocation colour mixture on the basis of not developing new color blocking through existing color blocking reach new green resistance
Effect.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to include these modifications and variations.
Claims (10)
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| CN201710084503.5A CN106647006B (en) | 2017-02-16 | 2017-02-16 | A color filter, its manufacturing method, and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10394074B2 (en) | 2017-12-26 | 2019-08-27 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Color film substrate and method of manufacturing the same, liquid crystal panel |
| CN107884981B (en) * | 2017-12-26 | 2020-06-23 | 深圳市华星光电技术有限公司 | Color film substrate, manufacturing method thereof and liquid crystal panel |
| CN110554790B (en) * | 2018-06-01 | 2023-01-20 | 光宝科技（常州）有限公司 | Touch panel |
| CN111652196B (en) * | 2020-07-17 | 2022-12-09 | 厦门天马微电子有限公司 | Display panel and display device |
| CN112380964B (en) * | 2020-11-11 | 2024-07-05 | 京东方科技集团股份有限公司 | Photoelectric detection substrate and display device |
| CN116626954A (en) * | 2023-05-25 | 2023-08-22 | 华中科技大学 | A red, green and blue three-channel reconfigurable color filter |
| CN117560969B (en) * | 2023-11-03 | 2024-08-09 | 惠科股份有限公司 | Display panel and display device |
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| JP2009244296A (en) * | 2008-03-28 | 2009-10-22 | Fuji Electric Holdings Co Ltd | Color conversion filter |
| CN202693954U (en) * | 2012-08-03 | 2013-01-23 | 京东方科技集团股份有限公司 | Display substrate, liquid crystal display panel and liquid crystal display device |
| CN104166269A (en) * | 2014-07-28 | 2014-11-26 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method of display substrate and display device |
| CN104965341A (en) * | 2015-08-04 | 2015-10-07 | 京东方科技集团股份有限公司 | Display panel and displayer |
| CN105467667B (en) * | 2016-01-28 | 2018-12-18 | 京东方科技集团股份有限公司 | Color membrane substrates and preparation method thereof, display panel and display device |
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