CN1556421A - Color filter and manufacturing method thereof - Google Patents

Abstract

The invention relates to a color filter and a manufacturing method thereof, wherein the manufacturing method of the color filter comprises the steps of firstly providing a substrate, wherein the substrate is provided with a display area and a non-display area, and then forming a black matrix on the substrate, wherein the black matrix surrounds a plurality of sub-pixel areas in the display area, and covers the non-display area adjacent to the edge of the display area. Then, a color filter unit is formed in each sub-pixel area, and a light shielding layer is formed on the black matrix adjacent to the non-display area at the edge of the display area in the process of forming the color filter unit. The color filter can improve the problem of light leakage at the edge of a display area. In the method for manufacturing the color filter, the purpose of improving light leakage can be achieved only by changing the design of the color photoresist or the light shield with the alignment bulges without changing the manufacturing process or materials, so that the method is more practical.

Description

Color filter and manufacturing method thereof

technical field

The invention relates to a color filter and its manufacturing method, in particular to a color filter which forms a light-shielding layer on a black matrix in a non-display area to avoid light leakage at the edge of a display area and its manufacturing method.

Background technique

With the substantial improvement of computer performance and the high development of the Internet and multimedia technology, most of the transmission of image information has now been converted from analog to digital transmission, and in order to match the modern life style, the volume of video or imaging devices is also becoming thinner and thinner. Although the traditional cathode ray display (CRT) still has its advantages, due to the structure of the internal electronic cavity, the display is bulky and takes up space, and there are still problems such as radiation damage to the eyes when displaying. Therefore, flat panel displays (Flat Panel Displays), such as liquid crystal displays (LCDs), organic light-emitting displays (OLEDs), or plasma displays (Plasma Display Panels, PDPs), developed in conjunction with optoelectronic technology and semiconductor manufacturing technology, have gradually Become the mainstream of display products.

At present, liquid crystal displays are developing towards full color, large size, high resolution and low cost. Among them, liquid crystal displays usually use color filters to achieve the effect of color display. The color filter is usually constructed on a transparent glass substrate, and the transparent glass substrate is mainly equipped with a black matrix (Black Matrix, BM) for shading and color filter units corresponding to each sub-pixel arrangement, such as red filter light unit, green filter unit and blue filter unit, etc. The detailed structure and relevant description of the color filter are described as follows.

Please refer to FIG. 1 , which is a schematic structural diagram of a conventional color filter. The color filter 100 is mainly composed of a substrate 102, a black matrix 104a, 104b, a plurality of color filter units 106 and a shared electrode 108, and the substrate 102 can be divided into a central display area 102a and a surrounding display area. The non-display area 102b on the periphery of the area 102a. The black matrixes 104a and 104b are disposed on the surface of the substrate 102, wherein the black matrix 104a encloses a plurality of sub-pixel regions 110 in the display region 102a, and the black matrix 104b covers the non-pixel regions adjacent to the edge of the display region 102a. Display area 102b. In addition, the color filter unit 106 is formed by photoresists of several different colors (such as red photoresist, green photoresist, and blue photoresist, etc.) through exposure and development processes, and is correspondingly arranged surrounded by the black matrix 104 in the sub-pixel area 110 of the . In addition, a shared electrode 108 is further disposed on the surfaces of the black matrixes 104 a , 104 b and the color filter unit 106 .

Please refer to FIG. 1 again. After the white light source passes through the color filter units 106 of different colors, it will be filtered into different colors of outgoing light, and the main function of the black matrix 104a in the display area 102a is to effectively separate different colors. In order to improve the contrast value and color purity of the display. In addition, the black matrix 104b covering the non-display area 102b adjacent to the edge of the display area 102a prevents light leakage through the non-display area 102b, thereby affecting the display effect of the liquid crystal display.

The material of the early black matrix is usually chromium (Chromium) metal, but because the use of chromium metal as the black matrix will cause environmental pollution and other problems, so in consideration of environmental protection, black resin (Resin) is often used to replace the original black matrix in today's manufacturing process. chrome metal to achieve the effect of shading. However, since black resin has lower light-shielding performance than chrome metal, part of the light still leaks out through the non-display area during image development, resulting in the problem of light leakage at the edge of the display area.

It can be seen that the above-mentioned existing color filter and its manufacturing method still have defects, and further improvement is urgently needed. In order to solve the defects of the existing color filters and their manufacturing methods, relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time. This is obviously what the relevant industry is eager to solve. question.

In view of the defects in the above-mentioned existing color filters and their manufacturing methods, the inventor actively researches and innovates based on years of rich practical experience and professional knowledge in the design and manufacture of such products, in order to create a new color filter The light sheet and its manufacturing method can improve the general existing color filter and its manufacturing method, making it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The purpose of the present invention is to overcome the defects in the existing color filter and its manufacturing method, and provide a new color filter and its manufacturing method. The technical problem to be solved is to reduce the size of the display area. Opportunities for light leakage at the edges are more suitable for practical use and have industrial utilization value.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A color filter proposed according to the present invention at least includes: a substrate having a display area and a non-display area; a black matrix configured on the substrate, wherein the black matrix is in the display area A plurality of sub-pixel areas are surrounded, and the black matrix covers the non-display area adjacent to the edge of the display area; a plurality of color filter units are correspondingly arranged in the sub-pixel areas; and a light-shielding layer , is arranged on the black matrix of the non-display area adjacent to the edge of the display area.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned color filter, the material of the light-shielding layer is one selected from the group consisting of red photoresist, green photoresist and blue photoresist.

The aforementioned color filter, when the color filter is applied to a multi-domain vertical alignment liquid crystal display panel, further includes a plurality of alignment protrusions arranged on the color filter units and the black matrix.

In the aforementioned color filter, the material of the light-shielding layer is the same as that of the alignment protrusions.

In the aforementioned color filter, the material of the black matrix includes black resin.

In the aforementioned color filter, the color filter units are composed of a plurality of red photoresist units, a plurality of green photoresist units and a plurality of blue photoresist units.

The purpose of the present invention and the solution to its technical problems are also achieved by the following technical solutions. According to a method of manufacturing a color filter proposed by the present invention, it at least includes: providing a substrate, and the substrate has a display area and a non-display area; forming a black matrix on the substrate, wherein the black matrix is A plurality of first pixel areas, a plurality of second pixel areas and a plurality of third pixel areas are enclosed in the display area, and the black matrix covers the non-display area adjacent to the edge of the display area ; forming a first color filter unit in each of the primary pixel areas, and simultaneously forming a first light-shielding layer on the black matrix of the non-display area adjacent to the edge of the display area; A second color filter unit is formed in the second sub-pixel areas; and a third color filter unit is formed in each of the third sub-pixel areas.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

The aforementioned method of manufacturing a color filter further includes forming a second light-shielding layer on the first light-shielding layer while forming the second color filter unit.

The manufacturing method of the aforementioned color filter further includes forming a third light shielding layer on the second light shielding layer while forming the third color filter unit.

The manufacturing method of the aforementioned color filter, wherein after the formation of the third color filter units, it further includes the black matrix, the first color filter units, the second color filter units and the A plurality of alignment protrusions are formed on the third color filter unit.

The purpose of the present invention and the solution to its technical problems are also achieved by the following technical solutions. A method for manufacturing a color filter according to the present invention is suitable for a multi-domain vertical alignment liquid crystal display panel. The method for manufacturing the color filter at least includes the following steps: providing a substrate, and the substrate has a A display area and a non-display area; a black matrix is formed on the substrate, wherein the black matrix encloses a plurality of first pixel areas, a plurality of second pixel areas and a plurality of third pixel areas in the display area The pixel area, and the black matrix covers the non-display area adjacent to the edge of the display area; a first color filter unit is formed in each of the first pixel areas; in each of the second pixel areas A second color filter unit is formed in the area; a third color filter unit is formed in each of the third pixel areas; and in the black matrix, the first color filter units, and the second color A plurality of alignment protrusions are formed on the filter unit and the third color filter units, and at the same time, a first light-shielding layer is formed on the black matrix of the non-display area adjacent to the edge of the display area.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

The aforementioned method of manufacturing a color filter further includes forming a second light-shielding layer on the black matrix of the non-display area adjacent to the edge of the display area while forming the first color filter unit, The first light-shielding layer covers the second light-shielding layer.

The aforementioned method of manufacturing a color filter further includes forming a third light-shielding layer on the second light-shielding layer while forming the second color filter unit, and the first light-shielding layer will cover the first light-shielding layer Three shading layers.

The aforementioned method of manufacturing a color filter further includes forming a fourth light-shielding layer on the third light-shielding layer while forming the third color filter unit, and the first light-shielding layer will cover the fourth light-shielding layer. on the shading layer.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from the above technical solutions, in order to achieve the aforementioned object of the invention, the main technical contents of the present invention are as follows:

The invention provides a color filter and a manufacturing method thereof. First, a substrate is provided, and the substrate has a display area and a non-display area, and then, a black matrix is formed on the substrate, wherein the black matrix encloses a plurality of first pixel areas and a plurality of first pixel areas in the display area. The secondary pixel area and multiple third pixel areas, and the black matrix covers the non-display area adjacent to the edge of the display area. Then, a first color filter unit is formed in each sub-pixel area, and a first light-shielding layer is formed on the black matrix of the non-display area adjacent to the edge of the display area at the same time. Finally, at least one second color filter unit and at least one third color filter unit are correspondingly formed in each second sub-pixel area and each third sub-pixel area.

In addition, in the above-mentioned manufacturing method of the color filter, it further includes selectively forming a first color filter unit adjacent to the non-display area and the display area while forming the second color filter unit and the third color filter unit. Two light-shielding layers are formed on the first light-shielding layer or a third light-shielding layer is formed on the second light-shielding layer. In addition, if the color filter is applied to a Multi-Domain Vertical Alignment (MVA) liquid crystal display panel, after forming the third color filter unit, it is further included in the black matrix, the first color filter A plurality of alignment protrusions are formed on the light unit, the second color filter unit and the third color filter unit.

Based on the above purpose, the present invention also proposes a method for manufacturing a color filter applied to a Multi-Domain Vertical Alignment (MVA) liquid crystal display panel. First, a substrate is provided, and the substrate has a display area and a non-display area, and then a black matrix is formed on the substrate, wherein the black matrix encloses a plurality of first pixel areas and a plurality of second pixel areas in the display area. The sub-pixel area and a plurality of third sub-pixel areas, and the black matrix covers the non-display area adjacent to the edge of the display area. Then, a first color filter unit, a second color filter unit and a third color filter unit are correspondingly formed in each first pixel region, each second pixel region and each third pixel region light unit. Finally, a plurality of alignment protrusions are formed on the black matrix, the first color filter unit, the second color filter unit and the third color filter unit, and at the same time, the black matrix in the non-display area adjacent to the edge of the display area A first light-shielding layer is formed on it.

In the above-mentioned second method of manufacturing a color filter, it further includes forming a second light-shielding layer on the black matrix of the non-display area adjacent to the edge of the display area while forming the first color filter unit, The first light-shielding layer covers the second light-shielding layer.

In the above-mentioned second manufacturing method of the color filter, it further includes forming a third light-shielding layer on the black matrix of the non-display area adjacent to the edge of the display area while forming the second color filter unit, The first light-shielding layer covers the third light-shielding layer.

In the above-mentioned second method of manufacturing a color filter, it further includes forming a fourth light-shielding layer on the black matrix of the non-display area adjacent to the edge of the display area while forming the third color filter unit, The first light-shielding layer covers the fourth light-shielding layer.

The color filter of the present invention can be obtained by applying the above two manufacturing methods of the color filter. The color filter of the present invention at least includes a substrate, a black matrix, a plurality of color filter units and a light-shielding layer. Wherein, the substrate has a display area and a non-display area. The black matrix is arranged on the substrate, and its material is black resin, wherein the black matrix surrounds a plurality of sub-pixel areas in the display area, and the black matrix covers the non-display area adjacent to the edge of the display area. In addition, the color filter unit is correspondingly arranged in the sub-pixel area, and the light-shielding layer is arranged on the black matrix of the non-display area adjacent to the edge of the display area, and adjacent to the edge of the display area.

Following the above, in the color filter of the present invention, the color filter unit is composed of, for example, a plurality of red photoresist units, a plurality of green photoresist units, and a plurality of blue photoresist units, and the light-shielding layer is used to form color filters. The filter unit is formed together, so the light-shielding layer can be a single-layer or more than one-layer structure, and its material is, for example, one selected from the group consisting of red photoresist, green photoresist and blue photoresist. In addition, the color filter of the present invention can also be applied to a multi-domain vertical alignment liquid crystal display panel, in which, for example, a plurality of alignment protrusions are arranged on the color filter unit and the black matrix, and the light-shielding layer can be selected and aligned The protrusions are formed together, so the material thereof can be the same as that of the alignment protrusions in addition to the above-mentioned color photoresist.

With the above-mentioned technical solution, the present invention has at least the following advantages: the color filter of the present invention and its manufacturing method are formed adjacent to the color filter unit or alignment bump (multi-domain vertical alignment type liquid crystal display). A light-shielding layer is formed on the black matrix of the non-display area at the edge of the display area, so that the light-shielding effect of the non-display area can be improved, and the conventional light leakage problem at the edge of the display area can be solved. It is worth noting that, in the manufacturing method of the color filter of the present invention, it is only necessary to change the color photoresist or the mask design of the alignment bumps, without making any changes to the manufacturing process or materials, to achieve the above-mentioned improvement in light leakage. the goal of.

To sum up, the special color filter and its manufacturing method of the present invention can reduce the chance of light leakage at the edge of the display area, and thus is more suitable for practical use. It has the above-mentioned many advantages and practical value, and there is no similar structural design and method publicly published or used in similar products and manufacturing methods, so it is indeed innovative, and it is superior in product structure, manufacturing method or function. Great improvement, great progress in technology, and produced easy-to-use and practical effects, and compared with the existing color filter and its manufacturing method, it has a number of enhanced functions, so it is more suitable for practical use, and has The extensive utilization value of the industry is a novel, progressive and practical new design.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Description of drawings

FIG. 1 is a schematic structural diagram of a conventional color filter.

FIG. 2A-FIG. 2F are sequentially a flow chart of manufacturing a color filter in a preferred embodiment of the present invention.

FIG. 3 is a schematic structural diagram of the color filter of the above embodiment.

FIG. 4 is a schematic diagram of a color filter with double-layer light-shielding layers.

FIG. 5 is a schematic diagram of a color filter with double-layer light-shielding layers.

FIG. 6 is a schematic structural diagram of a multi-domain vertical alignment liquid crystal display panel.

100: Color filter 102: Substrate

102a: Display area 102b: Non-display area

104a: Black Matrix 104b: Black Matrix

106: Color filter unit 108: Shared electrode (common electrode)

110: subpixel grid 200: color filter

202: Substrate 202a: Display area

202b: Non-display area 204a: Black matrix

204b: black matrix 208a: first color filter unit

208b: the second color filter unit 208c: the third color filter unit

210a: The first pixel area 210b: The second pixel area

210c: The third pixel area 212: Shading layer

212a: Shading layer 212b: Shading layer

214: Shared electrode (common electrode) 216: Plastic frame

218: LCD 250: Liquid crystal display panel

300: Color filter 302: Substrate

302a: display area 302b: non-display area

304a: Black Matrix 304b: Black Matrix

308: Color filter unit 308a: Sub-pixel area

310: Alignment bumps 312: Shading layer

314: shared electrode (common electrode)

Detailed ways

The specific structure, manufacturing method, steps, features and effects of the color filter and its manufacturing method according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

Please refer to FIG. 2A to FIG. 2F , which are sequentially a flow chart of manufacturing a color filter in a preferred embodiment of the present invention. First, as shown in FIG. 2A , a substrate 202 is provided, which can be made of a transparent material such as glass or plastic, and the substrate 202 can be divided into a display area 202 a and a non-display area 202 b surrounding the display area 202 a. Next, please refer to FIG. 2B , a black matrix 204a, 204b is formed on the substrate 202 by using an opaque material such as black resin as a material, and through processes such as exposure and development, wherein the black matrix 204a is in the display area 202a A plurality of first pixel regions 210a, a plurality of second pixel regions 210b and a plurality of third pixel regions 210c are enclosed, and the black matrix 204b covers the non-display region 202b adjacent to the edge of the display region 202a.

Then, as shown in 2C, a first color photoresist layer (not shown) is formed on the substrate 202, and undergoes exposure and development processes to form a first color photoresist layer in each first pixel region 210a. The color filter unit 208a, and at the same time, a light shielding layer 212 is formed on the black matrix 204b of the non-display area 202b adjacent to the edge of the display area 202a.

Similarly, as shown in 2D, a second color photoresist layer (not shown) is formed on the substrate 202, and after exposure and development processes, a first color photoresist layer is formed in each second pixel region 210b. Two-color filter unit 208b.

Next, please refer to Figure 2E, a third color photoresist layer (not shown) is formed on the substrate 202, and after exposure and development processes, a first color photoresist layer is formed in each third pixel region 210c. Three color filter units 208c.

Finally, as shown in FIG. 2F , a shared electrode 214 is formed on the substrate 202 and covers the black matrix 204a, the black matrix 204b, the light shielding layer 212, the first color filter unit 208a, the second color filter unit 208b and the second color filter unit 208a. Three color filter units 208c.

Next, please refer to FIG. 3 , which is a schematic structural diagram of the color filter of the above-mentioned embodiment. The above-mentioned color filter 200 can form a liquid crystal display panel 250 after such steps as coating the plastic frame 216 , pressing the substrate, and injecting the liquid crystal 218 . Wherein, after the white light source incident through the thin film transistor array (array) substrate passes through the liquid crystal layer 218 and changes its light polarization direction, it passes through the first color filter unit 208a, the second color filter unit 208b and the third color filter unit 208a respectively. The color filter unit 208c performs the filtering function to become outgoing light with different colors. Wherein, a light-shielding layer 212 is formed on the black matrix 204b of the non-display area 202b, which can increase the light-shielding degree of the non-display area 202b of the color filter 200, thereby avoiding the problem of light leakage at the edge of the display area 202a.

In the color filter of the present invention, a light-shielding layer is formed on the black matrix of the non-display area adjacent to the edge of the display area while the color filter unit is formed, so as to reduce the light transmittance of the non-display area. Within the spirit scope of the technical solution of the present invention, the light-shielding layer can be selected to be formed together with different color filter units. Taking a color filter formed in the order of red filter unit, green filter unit and blue filter unit as an example, the light-shielding layer can be selected to be formed together with the blue filter unit, and its material is blue light filter unit. resistance. In addition, a color filter with double-layer light-shielding layers can also be used as shown in FIG. For the color (blue) filter unit 208b, a second light-shielding layer 212a is formed on the original first light-shielding layer 212, and the light-shielding layer is a double-layer structure having both red photoresist and blue photoresist. In addition, as shown in FIG. 5, when forming the third color (green) filter unit 208c, a third light-shielding layer 212b is formed on the previously formed second light-shielding layer 212a, and the light-shielding layer has both Three-layer structure of red photoresist, blue photoresist and green photoresist. In this way, the material of the light-shielding layer can be, for example, one of the group consisting of red photoresist, green photoresist and blue photoresist (such as red photoresist/blue photoresist or red photoresist/green photoresist/blue photoresist). Resistors, etc.), and the order of their combination can also vary with the order in which the color filter units are formed or the design of the mask.

In addition to the above-mentioned preferred embodiments, the color filter and its manufacturing method of the present invention can be applied to a Multi-Domain Vertical Alignment (MVA) liquid crystal display panel. Please refer to FIG. 6 , which is a schematic structural diagram of a multi-domain vertical alignment liquid crystal display panel. The color filter 300 includes, for example, a substrate 302 , a black matrix 304 a , 304 b , a plurality of color filter units 308 , a plurality of alignment protrusions 310 , a light shielding layer 312 and a common electrode 314 . The substrate 302 has a display area 302a and a non-display area 302b, and the black matrix 304a, 304a is disposed on the substrate 302, and its material is black resin, for example. Wherein, the black matrix 304a encloses a plurality of sub-pixel regions 308a in the display region 302a, and the black matrix 304b covers the non-display region 302b adjacent to the edge of the display region 302a.

Please continue to refer to FIG. 6, the color filter unit 308 is correspondingly disposed in the sub-pixel area 308a, which is, for example, made of color photoresists of various colors (such as red photoresist, green photoresist and blue photoresist, etc.) Formed after exposure and development processes. In addition, the alignment protrusion 310 is disposed on the common electrode 314 and located in the display area 302a, which is also formed by processes such as exposure and development of a photosensitive material. In addition, the light-shielding layer 312 of the color filter 300 in this embodiment is formed together with the alignment protrusion 310. The light-shielding layer 312 is disposed on the common electrode 314 and is located adjacent to the non-display area at the edge of the display area 302a. District 302b.

It is worth noting that, in addition to forming the above-mentioned light-shielding layer together with the alignment protrusions, it can also include a plurality of color photoresist layers forming a color filter unit as shown in the first embodiment. However, its related The manufacturing method and steps have been disclosed in the above-mentioned first embodiment, so it will not be repeated here.

To sum up, the color filter and its manufacturing method of the present invention can improve the problem of light leakage at the edge of the display area that may be caused when black resin is used as the material of the black matrix. It is worth mentioning that the blue photoresist used in the present invention has a better light-shielding effect after actual verification, followed by the red photoresist, and then the green photoresist. In addition, when applied to a multi-domain vertically aligned liquid crystal display panel, the light-shielding layer can be selected to be formed together with the alignment protrusions. If the above-mentioned color photoresist is used together, the material of the light-shielding layer can be more varied. Variety. With the manufacturing method of the color filter of the present invention, the effect of improving light leakage can be achieved only by changing the design of the photomask without making any changes to the manufacturing process or materials.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the method and technical content disclosed above to make some changes or modifications to equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.

Claims (14)

1. A color filter, characterized in that it at least comprises: A substrate with a display area and a non-display area; A black matrix is configured on the substrate, wherein the black matrix surrounds a plurality of sub-pixel areas in the display area, and the black matrix covers the non-display area adjacent to the edge of the display area; A plurality of color filter units are correspondingly arranged in the sub-pixel regions; and A light-shielding layer is disposed on the black matrix of the non-display area adjacent to the edge of the display area. 2. The color filter according to claim 1, wherein the material of the light-shielding layer is one selected from the group consisting of red photoresist, green photoresist and blue photoresist. 3. The color filter according to claim 1, wherein when the color filter is applied to a multi-domain vertical alignment type liquid crystal display panel, it further comprises a plurality of alignment protrusions arranged on the The color filter unit and the black matrix. 4. The color filter according to claim 3, wherein the material of the light-shielding layer is the same as that of the alignment protrusions. 5. The color filter according to claim 1, wherein the material of the black matrix comprises black resin. 6. The color filter according to claim 1, wherein said color filter units are composed of a plurality of red photoresist units, a plurality of green photoresist units and a plurality of blue photoresist units constitute. 7. A method for manufacturing a color filter, characterized in that it at least includes: providing a substrate, and the substrate has a display area and a non-display area; A black matrix is formed on the substrate, wherein the black matrix encloses a plurality of first pixel areas, a plurality of second pixel areas and a plurality of third pixel areas in the display area, and the black matrix is covering the non-display area adjacent to the edge of the display area; forming a first color filter unit in each of the primary pixel areas, and simultaneously forming a first light-shielding layer on the black matrix of the non-display area adjacent to the edge of the display area; forming a second color filter unit in each of the second pixel regions; and A third color filter unit is formed in each of the third pixel areas. 8. The manufacturing method of a color filter according to claim 7, further comprising forming a second light shielding layer on the first light shielding layer while forming the second color filter unit. 9. The method of manufacturing a color filter according to claim 8, further comprising forming a third light shielding layer on the second light shielding layer while forming the third color filter unit. 10. The manufacturing method of the color filter according to claim 7, further comprising: after forming the third color filter units, further comprising: the black matrix, the first color filter units, the A plurality of alignment protrusions are formed on the second color filter units and the third color filter units. 11. A method for manufacturing a color filter, suitable for a multi-domain vertical alignment liquid crystal display panel, characterized in that the method for manufacturing the color filter at least includes the following steps: providing a substrate, and the substrate has a display area and a non-display area; A black matrix is formed on the substrate, wherein the black matrix encloses a plurality of first pixel areas, a plurality of second pixel areas and a plurality of third pixel areas in the display area, and the black matrix is covering the non-display area adjacent to the edge of the display area; forming a first color filter unit in each of the primary pixel areas; forming a second color filter unit in each of the second pixel regions; A third color filter unit is formed in each of the third pixel regions; and A plurality of alignment protrusions are formed on the black matrix, the first color filter units, the second color filter units, and the third color filter units, and at the same time, on the edge adjacent to the display area A first light-shielding layer is formed on the black matrix of the non-display area. 12. The method of manufacturing a color filter according to claim 11, further comprising: forming the first color filter unit at the time of forming the non-display area adjacent to the edge of the display area. A second light-shielding layer is formed on the black matrix, and the first light-shielding layer covers the second light-shielding layer. 13. The method for manufacturing a color filter according to claim 12, further comprising forming a third light-shielding layer on the second light-shielding layer while forming the second color filter unit, and The first light shielding layer covers the third light shielding layer. 14. The method for manufacturing a color filter according to claim 13, further comprising forming a fourth light-shielding layer on the third light-shielding layer while forming the third color filter unit, and the The first light shielding layer covers the fourth light shielding layer.

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