CN108170001B - Photoresist composition, color filter and display panel - Google Patents

Photoresist composition, color filter and display panel Download PDF

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CN108170001B
CN108170001B CN201711477418.1A CN201711477418A CN108170001B CN 108170001 B CN108170001 B CN 108170001B CN 201711477418 A CN201711477418 A CN 201711477418A CN 108170001 B CN108170001 B CN 108170001B
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photoresist composition
pixel
color filter
sub
dye
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CN108170001A (en
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于晓平
李吉
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TCL Huaxing Photoelectric Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds

Abstract

The invention provides a photoresist composition, a color filter and a display panel. The photoresist composition includes: colorants, alkali-soluble resins, reactive monomers, photo initiators, solvents and additives; wherein the colorant comprises a yellow dye comprising one or more of the following formulae:
Figure DDA0001533107230000011
Figure DDA0001533107230000012
the scheme can reduce the light scattering of the photoresist composition and improve the tinting strength of the photoresist composition by adding the yellow dye with a specific chemical formula into the photoresist composition. The yellow dye is used for preparing a photoresist composition, and a color filter and a display panel are further prepared by the photoresist composition, so that the color display effect of the color filter and the display panel is improved.

Description

Photoresist composition, color filter and display panel
Technical Field
The invention relates to the technical field of display, in particular to a photoresist composition, a color filter and a display panel.
Background
The liquid crystal display panel (L acquired crystal display, L CD) has the advantages of high Color saturation, low energy consumption and the like, and therefore, the liquid crystal display panel has a mainstream status in the technical field of display, wherein, a Color Filter (CF) is an important component of the liquid crystal display panel, the liquid crystal display panel can display images and mainly depends on the Color Filter, white light of a backlight passes through a liquid crystal layer and irradiates on the Color Filter, and the Color Filter corresponds to Red (Red, R), Green (Green, G) and Blue (Blue, B) pigment photoresistors on each pixel to form Red, Green and Blue light, and finally forms a Color image in human eyes.
The conventional CF is generally prepared by a pigment dispersion method, specifically, a color photoresist composition is coated on a substrate, and then the color photoresist is cured by irradiation of ultraviolet light and the like to form a pigment photoresist.
However, the RGB color filter and the liquid crystal display panel are limited by the properties of the photoresist composition, so that the color saturation and the transmittance of light are restricted, and the color display effect is affected.
Disclosure of Invention
The invention aims to provide a photoresist composition, a color filter and a display panel, which can improve the color display effect of the color filter and the display panel by reducing the light scattering of the photoresist composition and improving the tinting strength of the photoresist composition.
The embodiment of the invention provides a photoresist composition, which comprises: colorants, alkali-soluble resins, reactive monomers, photo initiators, solvents and additives;
wherein the colorant comprises a yellow dye comprising one or more of the following formulae:
Figure BDA0001533107210000021
in some embodiments, the R is1The radicals include H, (CH)2)2One or more of OH;
in some embodiments, the R is2The group comprises an electron donating group, and the electron donating group comprises OH and C6H5、CH＝CH2、H、CH3And CH2CH3One or more of (a).
In some embodiments, the R is2The group comprising an electron-withdrawing group comprising N+R3、NO2、CN、COOH、COOR、C＝O、OCH3、COOCH3And a halogen.
In some embodiments, the R is2' the groups include H and/or C (CH)3)3Said R is2"groups include H and/or C (CH)3)3。
In some embodiments, the colorant further comprises a red dye comprising an azonaphthalene dye.
In some embodiments, the azonaphthalene dye comprises one or more of the following formulas:
Figure BDA0001533107210000031
in some embodiments, the colorant further comprises a pigment, the pigment comprising greater than 50% of the colorant.
The embodiment of the invention also provides a color filter, which comprises a red sub-pixel, a green sub-pixel, a blue sub-pixel and a yellow sub-pixel which are sequentially arranged, wherein the red sub-pixel, the green sub-pixel, the blue sub-pixel and the yellow sub-pixel are made of the photoresist composition.
An embodiment of the present invention further provides a display panel, including: the array substrate, with the relative base plate that sets up of array substrate, set up in array substrate with the liquid crystal layer between the base plate to and foretell color filter, wherein color filter sets up on the array substrate or on the base plate.
Compared with the existing photoresist composition, the color filter and the display panel, the photoresist composition, the color filter and the display panel provided by the embodiment of the invention can reduce the light scattering of the photoresist composition and improve the tinting strength of the photoresist composition by adding the yellow dye with a specific chemical formula into the photoresist composition, and improve the color display effect of the color filter and the display panel.
In order to make the aforementioned and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below:
drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Fig. 2 is another schematic structural diagram of a display panel according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a color filter according to an embodiment of the invention.
Fig. 4 is a schematic color gamut diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
In the drawings, elements having similar structures are denoted by the same reference numerals.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural diagrams of a display panel according to an embodiment of the present invention. The display panel 1000 includes an array substrate 100, a substrate 200 disposed opposite to the array substrate, a liquid crystal layer 300 disposed between the array substrate 100 and the substrate 200, and a color filter 400.
As shown in fig. 1, the color filter 400 may be disposed on the array substrate 100, and as shown in fig. 2, the color filter 400 may be disposed on the substrate 200. Specifically, in order to improve contrast, prevent color mixing, color crosstalk between pixels, and the like, the black matrix 500 may be formed on the array substrate 100 or the substrate 200, and then the color filter 400 having four colors of light transmittance, i.e., red, green, blue, and yellow, including a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a yellow sub-pixel, may be sequentially formed.
The red sub-pixel, the green sub-pixel, the blue sub-pixel and the yellow sub-pixel are manufactured by coating a photoresist composition on the array substrate 100 or the substrate 200, and manufacturing a color film on the substrate through photoetching processes such as photoetching, corrosion, baking and the like. As shown in fig. 3, the sub-pixels of the color filter 400 are arranged in a manner that a red sub-pixel a, a green sub-pixel b, a blue sub-pixel c, and a yellow sub-pixel d are sequentially arranged.
The photoresist composition of the embodiments of the invention includes a colorant, an alkali soluble resin, a reactive monomer, a photo initiator, a solvent, and an additive. Wherein the photoinitiator comprises acetophenone, bisimidazole, oxime ester, triazabenzene, etc. The solvent is used to dissolve the solid material.
The colorant includes a yellow dye, wherein the yellow dye has one or more of the following chemical formulas:
Figure BDA0001533107210000061
wherein R is1The groups comprise one or more of H, (CH2)2 OH; r2' the groups include H and/or C (CH)3)3，R2"groups include H and/or C (CH)3)3。R2Groups include electron withdrawing groups and electron donating groups. Wherein the electron-withdrawing group comprises N+R3、NO2、CN、COOH、COOR、C＝O、OCH3、COOCH3And a halogen. Electron donating groups including OH, C6H5、CH＝CH2、H、CH3And CH2CH3One or more of (a). It should be noted that when R is present2When the group includes an electron-withdrawing group, the absorption peak of the yellow dye is red-shifted, and when R is2When the group includes an electron donating group, the absorption peak of the yellow dye can be blue-shifted, so that R can be adjusted according to the actual chromaticity requirement in the embodiment2The group is configured as an electron withdrawing group or an electron donating group.
In some embodiments, the colorant further comprises a red dye, wherein the red dye comprises an azonaphthalene dye. Specifically, the azonaphthalene dye comprises one or more of the following chemical formulas:
Figure BDA0001533107210000071
the coloring power of the red dye and the yellow dye can reach 3-5 times of that of the pigment, and the dye is a small molecular substance, so that the scattering of light can be reduced.
In some embodiments, the colorant further comprises a pigment, including in particular R254, R177, Y150, Y138, Y13, Y231, Y139, and the like. Wherein the proportion of pigment in the colorant is greater than 50%. The above-mentioned yellow dye and red dye may be mixed with a pigment to constitute the colorant. Specifically, one or more of the pigments R254, R177, Y150, Y138, Y13 and Y231 are used in combination with a red dye. One or more of pigments Y138, Y139, Y150 and Y231 are used in combination with a yellow dye.
As shown in fig. 4, fig. 4 is a schematic view of the color gamut of a display panel prepared using the photoresist composition described above. The diagram is represented using the CIE 1931xy chromaticity coordinate system, where (x, y) represents the chromaticity coordinates, representing one color. As shown in fig. 4, the color gamut of the display panel in the embodiment is expanded from the area a to the area b, so that the color gamut is greatly improved, and the color display effect of the display panel can be further improved.
The embodiment of the invention provides a photoresist composition, a color filter and a display panel, wherein a yellow dye with a specific chemical formula is added into the photoresist composition, so that the light scattering of the photoresist composition can be reduced, the tinting strength of the photoresist composition can be improved, and the color display effect of the color filter and the display panel can be improved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims (8)

1. A photoresist composition, comprising: colorants, alkali-soluble resins, reactive monomers, photo initiators, solvents and additives;
wherein the colorant comprises a yellow dye and a red dye, the red dye comprises an azonaphthalene dye, and the yellow dye comprises one or more of the following chemical formulas:
Figure FDA0002419972320000011
the colorant further includes a pigment including R254, R177, Y150, Y138, Y13, Y231 and Y139, wherein one or more of pigments Y138, Y139, Y150 and Y231 is used in combination with the yellow dye and one or more of pigments R254, R177, Y150, Y138, Y13 and Y231 is used in combination with the red dye.
2. The photoresist composition of claim 1, further comprising
Figure FDA0002419972320000012
The R is1The radicals include H, (CH)2)2One or more of OH, said R2The group comprises an electron donating group and/or an electron withdrawing group, R2' the groups include H and/or C (CH)3)3Said R is2"groups include H and/or C (CH)3)3。
3. The photoresist composition of claim 2, wherein the electron donating group comprises OH, C6H5、CH＝CH2、H、CH3And CH2CH3One or more of (a).
4. The photoresist composition of claim 2, wherein the electron withdrawing group comprises N+R3、NO2、CN、COOH、COOR、C＝O、OCH3、COOCH3And a halogen.
5. The photoresist composition of claim 1, wherein the azonaphthalene dye comprises one or more of the following formulas:
Figure FDA0002419972320000021
6. the photoresist composition of claim 1, wherein the colorant further comprises a pigment, and the pigment comprises greater than 50% of the colorant.
7. A color filter, comprising a red sub-pixel, a green sub-pixel, a blue sub-pixel and a yellow sub-pixel, which are sequentially arranged, wherein the red sub-pixel, the green sub-pixel, the blue sub-pixel and the yellow sub-pixel are made of the photoresist composition of any one of claims 1 to 6.
8. A display panel, comprising: an array substrate, a substrate disposed opposite the array substrate, a liquid crystal layer disposed between the array substrate and the substrate, and the color filter of claim 7, wherein the color filter is disposed on the array substrate or on the substrate.
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CN1204711A (en) * 1997-07-04 1999-01-13 希巴特殊化学控股公司 Pigment dyeing and pigment printing process
CN102597126B (en) * 2009-08-27 2014-12-24 富士胶片株式会社 Dichlorodiketopyrrolopyrrole pigment, coloring material dispersion containing the pigment, and process for production of the coloring material dispersion
JP5705459B2 (en) * 2009-09-04 2015-04-22 富士フイルム株式会社 Photocurable composition for color filter, color filter formed with the photocurable composition, and image display device including the same
CN106433492A (en) * 2016-09-18 2017-02-22 深圳市华星光电技术有限公司 Lateral light-shading glue and frameless display device
CN106977976B (en) * 2017-04-24 2019-03-15 苏州科法曼化学有限公司 Yellow disperse dye compound and its synthetic method and tint applications
CN107057403B (en) * 2017-05-10 2018-08-17 浙江山峪科技股份有限公司 A kind of golden yellow disperse dye composition, disperse dyes product and its application

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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province

Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd.

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