Color Filter Based on Color Photoresist and WOLED Display

Abstract

The present invention discloses a color filter based on a color photoresist and a WOLED display. The color filter includes a color film layer, which is alternately constructed by a number of blue units, a number of transparent units, a number of green units, and a number of red units. The blue units are made of a color photoresist, the green units are made of a green photoresist, the red units are made of a red photoresist, and the components of the color photoresist include a blue fluorescent dye, a yellow fluorescent dye, and a purple fluorescent dye. The WOLED display includes a color filter, a WOLED layer, and an array substrate. The present invention constructs purple, blue, and yellow dye molecules and applies them to the color photoresist, enabling the WOLED display to more precisely display various colors, expanding the color gamut range of the WOLED display, improving the vividness and color accuracy of its display, and enabling the WOLED display to present a wider range of colors by using the color filter.

Description

Technical Field

[0001] The present invention belongs to the field of display panel manufacturing, and relates to the manufacturing technologies of color filters and WOLED displays. Specifically, it relates to a color filter based on color photoresist and a WOLED display. Background Art

[0002] In recent years, the display industry has developed rapidly. Compared with Thin Film Transistor-Liquid Crystal Display (TFT-LCD), Organic Light-Emitting Diode (OLED) has the advantages of simple structure, fast response rate, self-luminescence without a backlight module, being thin and light, etc.

[0003] To achieve full-color display of a display, one type of OLED display realizes the self-luminescence process based on three materials of red, green, and blue in the light-emitting layer. However, due to the different material lifetimes, especially the short service life of the blue light material, color deviation will occur during subsequent use. To address the above problems, in modern processes, another method is adopted to stack a White Organic Light Emitting Diode (WOLED) and a Color Filter (CF) to achieve full-color display. The color filter includes three color resistance units of red, green, and blue. The color filter uses the white light generated by the bottom WOLED as a light source, and generates colored light of corresponding colors by transmitting light of a specific wavelength. WOLED has the advantages of high contrast, high saturation, good light emission uniformity, and high energy efficiency. The three color photoresists of red, green, and blue play a crucial role in the color filter (Color Filter). Currently, researchers mainly perform the color mixing process by adding different pigments. Among them, the solubility of the pigments is poor, and there is a situation of uneven dispersion in the solution, which further affects the coloring process. When light passes through the CF, its light color intensity and transmittance will be reduced, which has a non-negligible impact on the display process.

[0004] Therefore, it can be seen that the existing color filters have the problem of low light transmittance, and WOLED displays have problems such as a narrow light-emitting color gamut and unsatisfactory display effects. Therefore, a new technical solution is needed to solve these problems. Summary of the Invention

[0005] Objective of the Invention: In order to overcome the deficiencies in the prior art, a color filter based on a color photoresist and a WOLED display are provided. Purple, blue, and yellow dye molecules are constructed and applied to the color photoresist. The prepared color filter has high gray levels and transmittance. The color filter can absorb light of some specific wavelengths, enabling the WOLED display to more accurately display various colors, expand the color gamut range of the WOLED display, improve the vividness and color accuracy of its display. By using the color filter, the WOLED display can present a wider color range and provide a more real and vivid visual experience.

[0006] Technical Solution: To achieve the above objective, the present invention provides a color filter based on a color photoresist, including a color film layer. The color film layer is alternately constructed by a number of blue units, a number of transparent units, a number of green units, and a number of red units. The blue units are made of a color photoresist, the green units are made of a green photoresist, the red units are made of a red photoresist, and the components of the color photoresist include a blue fluorescent dye, a yellow fluorescent dye, and a purple fluorescent dye.

[0007] Further, the blue fluorescent dye is a phenoxazine type, which can absorb light with a wavelength less than the blue wavelength and emit blue light. The structural general formula of the blue fluorescent dye is:

[0008]

[0009] Wherein, R1 is a hydrogen group or a methyl group.

[0010] Further, the yellow fluorescent dye is an azo type, which can absorb light with a wavelength less than the yellow wavelength and emit yellow light. The structural general formula of the yellow fluorescent dye is:

[0011]

[0012] Wherein, R2 is a hydrogen group or a methyl group.

[0013] Further, the purple fluorescent dye is a phenoxazine type, which can absorb light with a wavelength less than the purple wavelength and emit purple light. The structural general formula of the purple fluorescent dye is:

[0014]

[0015] Wherein, R3 is a hydrogen group or a methyl group.

[0016] In the present invention, the transparent unit can adjust the light propagation path and distribution, thereby affecting the viewing angle and brightness of the displayed image. Secondly, the transparent unit can eliminate unnecessary scattering and reflection, thereby improving the clarity and color saturation of the display screen. In addition, the transparent unit can also protect the underlying electronic components and connection lines from the external environment and mechanical damage.

[0017] In the color film layer of the present invention, the numbers of blue units, transparent units, green units, and red units are subject to certain conditions and limitations. First of all, the number of blue units is usually limited by the requirements of the display panel's resolution and color performance. The number of blue units is generally between several million and tens of millions. Too many or too few blue units may affect the display effect. Secondly, the number of transparent units usually depends on the design and manufacturing requirements of the display panel. Too many transparent units will cause a decrease in the light transmittance of the display panel, affecting the display effect; while too few transparent units may not effectively protect the underlying electronic components and connection lines. The number of green units is also affected by the design and manufacturing requirements of the display panel. Too many or too few green units may affect the color performance and image quality. The number of red units is similarly affected by the design and manufacturing requirements of the display panel. Too many or too few red units may also affect the color performance and image quality.

[0018] Furthermore, the components of the color photoresist further include blue pigments, alkali-soluble resins, monomers, photoinitiators, solvents, and additives. Based on 100 parts by weight of the color photoresist, it includes the following components in parts by weight:

[0019] The sum of the parts by weight of the blue fluorescent dye, yellow fluorescent dye, purple fluorescent dye, and blue pigment is 8 - 12 parts, the part by weight of the alkali-soluble resin is 6 - 10 parts, the part by weight of the monomer is 5 - 7 parts, the part by weight of the photoinitiator is 0.3 - 0.7 parts, the part by weight of the solvent is 75 - 80 parts, and the part by weight of the additive is 0.2 - 0.3 parts.

[0020] The parts by weight of the dyes and pigments in the color photoresist are determined and adjusted according to factors such as color targets, material properties, application scenarios, and process conditions. The principle is to achieve specific color effects, such as specific spectral distributions, brightness, saturation, etc. The parts by weight of the dyes and pigments need to be selected and adjusted according to the required color targets. Secondly, the manufacturing and use process conditions of the color photoresist will also affect the parts by weight of the dyes and pigments. For example, different exposure times and light source conditions will affect the photosensitivity of the dyes and pigments.

[0021] Further, in the color photoresist, the blue pigment is Blue15:6, the alkali-soluble resin is one or more of methacrylic alcohol esters, acrylic acid, and alkyl methacrylates, the monomer is one or more of trimethylolpropane triacrylate, dipentaerythritol hexaacrylate, and pentaerythritol tetraacrylate, the photoinitiator is one or more of benzophenones, benzoins, triazines, and anthraquinones, the solvent is one or more of propylene glycol monomethyl ether, propylene glycol methyl ether acetate, propylene glycol monoethyl ether, and 3-methoxybutyl acetate, and the additive is one or more of silane coupling agents, leveling agents, and defoaming agents.

[0022] Further, the blue fluorescent dye, yellow fluorescent dye, and purple fluorescent dye have carbon-carbon unsaturated double bonds, and after copolymerizing with the alkali-soluble resin, they are grafted onto the resin polymer. The carbon-carbon unsaturated bonds are shown in the structure of the fluorescent dye. The main function of the carbon-carbon unsaturated double bonds is for crosslinking. When exposed to light or thermal energy, the double bonds break and become single bonds to crosslink with the resin.

[0023] The present invention also provides a WOLED display, including a color filter, a WOLED layer, and an array substrate. The WOLED layer is disposed on the array substrate. The color filter includes a color film layer and a bottom lining. The color film layer is alternately constructed by a plurality of blue units, a plurality of transparent units, a plurality of green units, and a plurality of red units. The blue units are made of color photoresist. The color film layer is disposed on the WOLED layer, and the bottom lining is disposed on the color film layer.

[0024] Further, the preparation method of the WOLED layer is as follows: Take out the dried ITO substrate and put it into an ultraviolet ozone cleaning machine for cleaning; Put the wafer into a vacuum evaporation chamber, and evaporate MoO3 onto the ITO substrate; Evaporate the material TCTA onto the anode to effectively transport electrons and holes to the light-emitting layer; Evaporate the three main and guest blended materials, the host material mCP, the guest material Flrpic, and the guest material PO-01, onto the hole transport layer; Subsequently, evaporate the electron transport material TmPyPB onto the hole blocking layer, evaporate LiF as the electron injection material onto the electron transport layer, evaporate Al as the cathode material onto the electron injection layer, bond the transparent glass to Al through a curing adhesive and bond it through an ultraviolet curing device.

[0025] The WOLED layer in the present invention obtained through the above preparation method can provide a white backlight, construct a sandwich device structure, and can meet the construction requirements of the color film layer of the color filter in the present invention. The structure of the WOLED layer has the advantages of simpler structure, better brightness, and better stability compared with the existing ones.

[0026] In the present invention, the light emitted through the WOLED display is filtered by a color filter to excite stronger blue light, which effectively improves the color gamut and transmittance of the overall WOLED display. After the emitted light is filtered by the color filter, the light intensity of the red light increases, which can effectively improve the color gamut and light transmittance of the WOLED display, and improves the quality of the overall display.

[0027] In the present invention, a hybrid material color photoresist is made by introducing a dye into a pigment. This is because the dye has a certain solubility in an organic solvent. By introducing the dye, light scattering can be reduced to improve the transmittance of the color filter, which can effectively reduce the energy consumption of the display. It is of great significance for exploring WOLEDs with high image quality, fast response speed and low energy consumption.

[0028] It should be noted here that the higher the transmittance of the color filter, the less light is absorbed and the less energy is lost. The color filter in the display reproduces colors by selectively absorbing and transmitting light of different wavelengths. If the transmittance of the filter is low, the display needs more light to compensate, which increases the energy consumption of the display. Therefore, increasing the transmittance of the color filter can reduce the energy consumption of the display.

[0029] Increasing the transmittance of the color filter can also improve the brightness of the display. Because in the display, the brightness of the light is an important factor directly affecting the display effect. If the transmittance of the color filter is increased, the display can use fewer backlights to achieve the same brightness effect, thereby reducing the energy consumption of the display.

[0030] Beneficial effects: Compared with the prior art, the present invention constructs purple, blue, and yellow dye molecules and applies them to a color photoresist. A hybrid material color photoresist is made by introducing a special dye into a pigment. Using this color photoresist to make a color filter, the transmittance of the color filter can be improved by reducing light scattering through the introduction of a special dye, solving the problem of low transmittance of the existing color filter. Moreover, the gray scale and transmittance of the color filter are greatly improved. The color filter can absorb light of some specific wavelengths. Applying this color filter to a WOLED display enables the WOLED display to more accurately display various colors, effectively expanding the color gamut range of the WOLED display, improving the display vividness and color accuracy of the WOLED display, enabling the WOLED display to present a wider range of colors, and providing a more real and vivid visual experience. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of a WOLED display;

[0032] Figure 2 It is a schematic structural diagram of the WOLED layer in a WOLED display. Specific Embodiments

[0033] The present invention will be further clarified below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, various equivalent modifications made by those skilled in the art fall within the scope defined by the appended claims of this application.

[0034] Example 1:

[0035] This example provides a color photoresist, which includes the following components according to 100 parts by weight:

[0036] 2 parts of blue fluorescent dye, 2 parts of yellow fluorescent dye, 2 parts of purple fluorescent dye, 62 parts of blue pigment Blue15:6, 6 parts of methacrylic alcohol ester, 5 parts of trimethylolpropane triacrylate group, 0.7 part of benzophenone, 80 parts of propylene glycol monomethyl ether, and 0.3 part of silane coupling agent.

[0037] The blue fluorescent dye is of the phenoxazine type, which can absorb light with a wavelength shorter than the blue wavelength and emit blue light. The structural general formula of the blue fluorescent dye is:

[0038]

[0039] Among them, R1 is a hydrogen group or a methyl group;

[0040] The yellow fluorescent dye is of the azo type, which can absorb light with a wavelength shorter than the yellow wavelength and emit yellow light. The structural general formula of the yellow fluorescent dye is:

[0041]

[0042] Among them, R2 is a hydrogen group or a methyl group;

[0043] The purple fluorescent dye is of the phenoxazine type, which can absorb light with a wavelength shorter than the purple wavelength and emit purple light. The structural general formula of the purple fluorescent dye is:

[0044]

[0045] Among them, R3 is a hydrogen group or a methyl group;

[0046] The blue fluorescent dye, yellow fluorescent dye, and purple fluorescent dye have carbon-carbon unsaturated bonds and are grafted onto the resin polymer after copolymerization with the alkali-soluble resin.

[0047] In this embodiment, the obtained color photoresist is used to fabricate a color filter, and a color filter based on the color photoresist is provided. The color filter includes a color film layer and a bottom lining disposed on the color film layer. The color film layer is alternately constructed by a plurality of blue units, a plurality of transparent units, a plurality of green units, and a plurality of red units. The blue units are made of the color photoresist, the green units are made of a green photoresist, and the red units are made of a red photoresist.

[0048] In this embodiment, the obtained color filter is used to fabricate a WOLED display, as Figure 1 shown. The WOLED display includes a color filter, a WOLED layer 55, and an array substrate 66. The WOLED layer 55 is disposed on the array substrate 66. The color filter includes a color film layer 77 and a bottom lining 44. The color film layer 77 is alternately constructed by a plurality of blue units 11, a plurality of transparent units 88, a plurality of green units 22, and a plurality of red units 33. The blue units are made of the color photoresist. The color film layer 77 is disposed on the WOLED layer 55, and the bottom lining 44 is disposed on the color film layer 77.

[0049] Referring to Figure 2 , the preparation method of the WOLED layer 55 in the WOLED display of this embodiment is as follows:

[0050] Take out the dried ITO substrate and put it into an ultraviolet ozone cleaning machine for cleaning at 150 °C for 15 min; put the wafer into a vacuum evaporation chamber at 1 × 10 -4 Pa, and deposit MoO3 on the ITO substrate at a rate of 0.3 nm s-1; deposit the material TCTA on the anode at 0.2 nm s -1 to effectively transport electrons and holes to the light-emitting layer; deposit the three materials of the host-guest blend, the host material mCP, the guest material Flrpic, and the guest material PO-01 on the hole transport layer at 0.2 nm s -1 ; then deposit the electron transport material TmPyPB on the hole blocking layer at 1.2 nm s -1 ; deposit LiF as the electron injection material on the electron transport layer at 0.02 nm s -1 ; deposit Al as the cathode material on the electron injection layer at a rate of 2 nm s -1 ; bond the transparent glass to the Al through a curing adhesive and bond it through an ultraviolet curing device.

[0051] Example 2:

[0052] This embodiment provides a color photoresist, which includes the following components in 100 parts by weight:

[0053] 3 parts of blue fluorescent dye, 3 parts of yellow fluorescent dye, 3 parts of purple fluorescent dye, 63 parts of blue pigment Blue15:6, 7 parts of acrylic acid, 5.5 parts of dipentaerythritol hexaacrylate, 0.3 parts of benzoin, 75 parts of propylene glycol monomethyl ether acetate, 0.2 parts of leveling agent.

[0054] The blue fluorescent dye is a phenoxazine type, which can absorb light with a wavelength shorter than the blue wavelength and emit blue light. The structural general formula of the blue fluorescent dye is:

[0055]

[0056] Among them, R1 is a hydrogen group or a methyl group;

[0057] The yellow fluorescent dye is an azo type, which can absorb light with a wavelength shorter than the yellow wavelength and emit yellow light. The structural general formula of the yellow fluorescent dye is:

[0058]

[0059] Among them, R2 is a hydrogen group or a methyl group;

[0060] The purple fluorescent dye is a phenoxazine type, which can absorb light with a wavelength shorter than the purple wavelength and emit purple light. The structural general formula of the purple fluorescent dye is:

[0061]

[0062] Among them, R3 is a hydrogen group or a methyl group;

[0063] The blue fluorescent dye, yellow fluorescent dye, and purple fluorescent dye have carbon-carbon unsaturated bonds and are grafted onto the resin polymer after copolymerization with the alkali-soluble resin.

[0064] In this embodiment, the obtained color photoresist is used to manufacture a color filter, and a color filter based on the color photoresist is provided, including a color film layer and a bottom lining disposed on the color film layer. The color film layer is alternately constructed by a number of blue units, a number of transparent units, a number of green units, and a number of red units. The blue units are made of the color photoresist, the green units are made of the green photoresist, and the red units are made of the red photoresist.

[0065] In this embodiment, the obtained color filter is used to manufacture a WOLED display, such as Figure 1As shown, the WOLED display includes a color filter, a WOLED layer 55, and an array substrate 66. The WOLED layer 55 is disposed on the array substrate 66. The color filter includes a color film layer 77 and a bottom liner 44. The color film layer 77 is alternately constructed by a plurality of blue units 11, a plurality of transparent units 88, a plurality of green units 22, and a plurality of red units 33. The blue units are made of a color photoresist. The color film layer 77 is disposed on the WOLED layer 55, and the bottom liner 44 is disposed on the color film layer 77.

[0066] Referring Figure 2 , in this embodiment, the preparation method of the WOLED layer 55 of the WOLED display is as follows:

[0067] Take out the dried ITO substrate and put it into an ultraviolet ozone cleaning machine for cleaning at 150 °C for 15 min; put the wafer into a vacuum evaporation chamber of 1×10 -4 Pa, and deposit MoO3 on the ITO substrate at a rate of 0.3 nm s -1 Deposit the material TCTA on the anode at a rate of 0.2 nm s -1 to effectively transport electrons and holes to the light-emitting layer; deposit the three host-guest blended materials, the host material mCP, the guest material Flrpic, and the guest material PO-01 on the hole transport layer at a rate of 0.2 nm s -1 Subsequently, deposit the electron transport material TmPyPB on the hole blocking layer at a rate of 1.2 nm s -1 Deposit LiF as the electron injection material on the electron transport layer at a rate of 0.02 nm s -1 Deposit Al as the cathode material on the electron injection layer at a rate of 2 nm s -1 Rate, and bond the transparent glass to the Al through a curing adhesive and bond it through an ultraviolet curing device.

[0068] Example 3:

[0069] This embodiment provides a color photoresist, which includes the following components in 100 parts by weight:

[0070] 2 parts of blue fluorescent dye, 2 parts of yellow fluorescent dye, 2 parts of purple fluorescent dye, 63 parts of blue pigment Blue15:6, 8 parts of alkyl methacrylate, 5.5 parts of pentaerythritol tetraacrylate, 0.3 parts of triazine, 77 parts of propylene glycol monoethyl ether, and 0.2 parts of silane coupling agent.

[0071] The blue fluorescent dye is a phenoxazine type, which can absorb light with a wavelength shorter than the blue wavelength and emit blue light. The structural general formula of the blue fluorescent dye is:

[0072]

[0073] Among them, R1 is a hydrogen group or a methyl group;

[0074] The yellow fluorescent dye is an azo type, which can absorb light with a wavelength shorter than the yellow wavelength and emit yellow light. The general structural formula of the yellow fluorescent dye is:

[0075]

[0076] Among them, R2 is a hydrogen group or a methyl group;

[0077] The purple fluorescent dye is a phenoxazine type, which can absorb light with a wavelength shorter than the purple wavelength and emit purple light. The general structural formula of the purple fluorescent dye is:

[0078]

[0079] Among them, R3 is a hydrogen group or a methyl group;

[0080] The blue fluorescent dye, yellow fluorescent dye, and purple fluorescent dye have carbon-carbon unsaturated bonds and are grafted onto the resin polymer after copolymerization with the alkali-soluble resin.

[0081] In this embodiment, the obtained color photoresist is used to fabricate a color filter, providing a color filter based on the color photoresist, including a color film layer and a bottom lining disposed on the color film layer. The color film layer is alternately constructed by a plurality of blue units, a plurality of transparent units, a plurality of green units, and a plurality of red units. The blue units are made of the color photoresist, the green units are made of a green photoresist, and the red units are made of a red photoresist.

[0082] In this embodiment, the obtained color filter is used to fabricate a WOLED display, as Figure 1 shown. The WOLED display includes a color filter, a WOLED layer 55, and an array substrate 66. The WOLED layer 55 is disposed on the array substrate 66. The color filter includes a color film layer 77 and a bottom lining 44. The color film layer 77 is alternately constructed by a plurality of blue units 11, a plurality of transparent units 88, a plurality of green units 22, and a plurality of red units 33. The blue units are made of the color photoresist. The color film layer 77 is disposed on the WOLED layer 55, and the bottom lining 44 is disposed on the color film layer 77.

[0083] Referring to Figure 2 , the preparation method of the WOLED layer 55 of the WOLED display in this embodiment is:

[0084] Take out the dried ITO substrate and put it into an ultraviolet ozone cleaning machine for cleaning at 150 °C for 15 min; put the wafer into a vacuum evaporation chamber at 1 × 10 -4 Pa, at a rate of 0.3 nm s -1Deposit MoO3 onto the ITO substrate; deposit the material TCTA onto the anode at a rate of 0.2 nm / s to effectively transport electrons and holes to the light-emitting layer; deposit the three host-guest blended materials, the host material mCP, the guest material Flrpic, and the guest material PO-01 onto the hole transport layer at a rate of 0.2 nm / s -1 Deposit the three host-guest blended materials, the host material mCP, the guest material Flrpic, and the guest material PO-01 onto the hole transport layer at a rate of 0.2 nm / s -1 Subsequently, deposit the electron transport material TmPyPB onto the hole blocking layer at a rate of 1.2 nm / s -1 Deposit LiF, as an electron injection material, onto the electron transport layer at a rate of 0.02 nm / s -1 Deposit Al, as a cathode material, onto the electron injection layer at a rate of 2 nm / s -1 Rate deposit onto the electron injection layer, and bond the transparent glass to the Al through a curing adhesive and then bond it through an ultraviolet curing device.

[0085] In this embodiment, the preparation method of the color film layer 77 is as follows: encapsulate the light-emitting layer, coat the color photoresist solution on it based on the encapsulation layer, place it in a VCD for vacuum drying and then put it in an oven for pre-baking at 100 °C, and then put it into a mask for exposure treatment to cause the photoresist to undergo a cross-linking reaction, where the exposure energy is 30 mj / m 2 ², the exposure distance is 300 μm, dissolve the uncrosslinked photoresist with a developer solution with a concentration of 0.043% again, and finally clean the surface of the substrate with clean water, dry it and then perform heat treatment at 230 °C.

[0086] Example 4:

[0087] In this embodiment, the performance of the color filters prepared from the blue photoresist, green photoresist, and red photoresist based on three dyes in Example 1 is tested, and their color coordinates, grayscale, and transmittance are tested. The color coordinates are (0.1395, 0.1071), (0.2775, 0.5771), and (0.6613, 0.3276) respectively, the grayscale values are 15.79, 68.07, and 18.66 respectively, and the transmittance values are 92.5%, 93.6%, and 91.6% respectively.

[0088] In this embodiment, the contrast of the color filters prepared from the blue photoresist, green photoresist, and red photoresist based on three dyes in Example 1 is tested, and the contrast values are 13653, 14525, and 7068 respectively.

[0089] Comparative Example 1:

[0090] In this comparative example, the average transmittance and color gamut of the WOLED display prepared in Example 1 and the existing WOLED display are detected. The specific detection data are shown in Table 1:

[0091] Table 1 - Comparison Table of Average Transmittance and Color Gamut of WOLED Displays

[0092]

[0093]

[0094] Color Gamut: The range of colors that a WOLED display can show, usually referenced by the NTSC color standard.

[0095] Transmittance: The ratio of the luminous flux emitted by each pixel of a WOLED display to the incident luminous flux, representing the brightness performance of the WOLED display.

[0096] According to the data in Table 1, it can be found that the average transmittance and color gamut based on the embodiments of the present invention are significantly better than those of existing WOLED displays, improving the display vividness and color accuracy of WOLED displays, enabling WOLED displays to present a wider range of colors and providing a more real and vivid visual experience.

Claims

1. A color filter based on a color photoresist, characterized in that, It includes a color film layer, which is alternately constructed by a number of blue units, a number of transparent units, a number of green units and a number of red units. The blue units are made of a color photoresist, the green units are made of a green photoresist, the red units are made of a red photoresist, and the components of the color photoresist include a blue fluorescent dye, a yellow fluorescent dye and a purple fluorescent dye; The blue fluorescent dye is of the phenoxazine type, and the structural general formula of the blue fluorescent dye is: wherein, R1 is a hydrogen group or a methyl group; The yellow fluorescent dye is of the azo type, and the structural general formula of the yellow fluorescent dye is: wherein, R2 is a hydrogen group or a methyl group; The purple fluorescent dye is of the phenoxazine type, and the structural general formula of the purple fluorescent dye is: wherein, R3 is a hydrogen group or a methyl group.

2. The color filter based on a color photoresist according to claim 1, characterized in that, The components of the color photoresist further include a blue pigment, an alkali-soluble resin, a monomer, a photoinitiator, a solvent and an additive. Based on 100 parts by weight of the color photoresist, it includes the following components in parts by weight: The sum of the parts by weight of the blue fluorescent dye, the yellow fluorescent dye, the purple fluorescent dye and the blue pigment is 8 - 12 parts, the parts by weight of the alkali-soluble resin is 6 - 10 parts, the parts by weight of the monomer is 5 - 7 parts, the parts by weight of the photoinitiator is 0.3 - 0.7 parts, the parts by weight of the solvent is 75 - 80 parts, and the parts by weight of the additive is 0.2 - 0.3 parts.

3. The color filter based on a color photoresist according to claim 2, characterized in that, In the color photoresist, the blue pigment is Blue15:6, the alkali-soluble resin is one or more of methacrylic acid alcohol ester, acrylic acid, and alkyl methacrylate, the monomer is one or more of trimethylolpropane triacrylate, dipentaerythritol hexaacrylate, and pentaerythritol tetraacrylate, the photoinitiator is one or more of benzophenone type, benzoin type, triazine type, and anthraquinone type, the solvent is one or more of propylene glycol monomethyl ether, propylene glycol methyl ether acetate, propylene glycol monoethyl ether, and 3-methoxybutyl acetate, and the additive is one or more of a silane coupling agent, a leveling agent, and an antifoaming agent.

4. The color filter based on a color photoresist according to claim 2, characterized in that, The blue fluorescent dye, the yellow fluorescent dye, and the purple fluorescent dye have carbon-carbon unsaturated double bonds, and are grafted onto the resin polymer after copolymerizing with the alkali-soluble resin.

Images