TW200817730A - Color filter substrate of liquid crystal display panel and manufacture method thereof - Google Patents

Abstract

A color filter substrate of a liquid crystal display device and a manufacture method thereof. The color filter substrate includes a base material, a black matrix, a color filter, an electrode layer and an isolation layer. The black matrix has several openings and is disposed on the base material. The base material is partly exposed from the openings. The color filter is disposed to the area that corresponds to the openings on the base material for colorizing light. The electrode layer is disposed on the black matrix and the color filter. The isolation layer is disposed on the electrode layer and partly covers the electrode layer. The black matrix and the isolation layer have the same pattern.

Description

200817730

Sanda number: TW3221PA IX. Description of the invention: [Technical field of the invention] The present invention relates to a color light-passing substrate for a liquid crystal display panel and a method of manufacturing the same, and in particular to a method for reducing the occurrence of a dead pixel A color filter substrate of a liquid crystal display panel and a method of manufacturing the same. [Prior Art] The production technology of a liquid crystal display panel (LCD) has been rapidly developed in recent years, and the liquid crystal display panel has been greatly improved in terms of enamel, reaction rate, and panel size. And because of its small size, light weight, power saving and no radiation, the liquid crystal display panel is widely used in notebook computers, digital cameras, digital video cameras, mobile phones, computer screens and LCD TVs. In various electronic products. In the process of the conventional liquid crystal display panel, in order to avoid the phenomenon of light leakage, the black matrix V (color matrix) and the color filter (c〇l〇r filter) of the color filter substrate are partially overlapping. When a transparent electrode layer is formed on a black matrix and a color filter, the transparent electrode has a large height at the above-mentioned heavy ridge. If a foreign matter such as a particle or a gel falls near the edge of the black matrix, the transparent electrode formed thereon may be more convex. When the color filter substrate and the thin-film transistor substrate are pressed together, the transparent electrode of the color filter substrate and the transparent electrode of the thin film transistor substrate are in contact with each other, thereby causing a short circuit. Now 6 200817730

Sanda number: TW3221PA image, so that the rotation of liquid crystal molecules between the two substrates cannot be controlled normally. In this way, the pixel corresponding to the pixel (pixd) cannot be displayed normally, and a defect is formed. When the number of dead pixels in the liquid crystal display panel exceeds a certain standard value, the liquid crystal display panel cannot be sold. This not only increases the cost of production, but also reduces the yield of the product. In order to avoid the occurrence of bad points in the manufacturing process of the liquid crystal display panel, the method of optical automatic detection (Automatic 0ptical Inspecti〇n, A〇I) is generally used to make foreign matter on the recording board, and the repairing machine is repaired by the resetting machine. action. However, this method requires extra time to be repaired in the process, and there is still a problem that the detection error cannot completely repair the substrate. In particular, when the number of foreign objects on the substrate is large, the repair time is further extended. As a result, it is impossible to effectively improve the yield and improve the production efficiency. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a color filter, a light sheet substrate, and a method of fabricating the same. This is to avoid the occurrence of a dead pixel by forming an insulating layer on the color filter substrate in the same pattern as the black matrix. This can increase the yield of the product, increase the production efficiency, and maintain the penetration rate of the open area. According to one aspect of the present invention, a color filter substrate is proposed. A substrate, a black matrix, a color filter, an electrode layer, and an insulating layer are included. The black matrix is disposed on the substrate and has a plurality of openings that expose portions of the substrate. A color filter is disposed on the substrate corresponding to the openings for coloring a light. The electrode layer is placed on the black matrix 7 200817730

Sanda number: TW3221PA and color filter. The insulating layer is disposed on the electrode layer, and the insulating layer only partially covers the electrode layer. The black matrix and the insulating layer have the same pattern. According to another object of the present invention, a liquid crystal display panel is proposed. A thin film transistor substrate, a color filter substrate, and a liquid crystal layer are included. The color filter substrate is disposed in parallel on the thin film transistor substrate and includes a substrate, a black matrix, an electrode layer and an insulating layer. The black matrix is placed on the substrate and has a plurality of openings. These openings are the exposed portions of the substrate. A color light-passing sheet is disposed on the substrate corresponding to the openings for coloring a light. The electrode layers are disposed on the black matrix and the color filter. The insulating layer is disposed on the electrode layer and only partially covers the electrode layer. The black matrix and the insulating layer have the same pattern. The liquid crystal layer is disposed between the thin film transistor substrate and the color filter substrate. According to still another object of the present invention, a method of manufacturing a color light-passing sheet is proposed. First, a substrate is provided. Next, a black matrix is formed on the substrate in accordance with a pattern. The black matrix has a plurality of openings that expose portions of the substrate. Next, a color filter is formed on the substrate corresponding to the openings. Further, an electrode layer is formed on the black matrix and the color filter. Then, an insulating layer is formed on the electrode layer in accordance with the pattern, and the n layer only partially covers the electrode layer. The above described objects, features, and advantages of the present invention will become more apparent and understood.

1 达号·· TW3221PA [Embodiment] First Embodiment

Referring to FIG. 1 and FIG. 2A to FIG. 2E, FIG. 1 is a flow chart of a method for manufacturing a color light-emitting sheet substrate according to the present invention, and FIGS. 2A to 2E are respectively shown in FIG. Step η~Step 15 立,, 乂·不意. First, as shown in step 11, a substrate 21 is provided. Next, steps are performed. As shown in Fig. 2B, a color matrix (blaCkmatrix) 22 is formed on the substrate 21 in accordance with a pattern. The black matrix 22 has 'a plurality of openings 22a which are exposed portions of the substrate 21. The second step 13 is performed as shown in Fig. 2C to form a color filter (sandwich) 23 on the substrate 21 corresponding to the positions of the openings 22 & In more detail, the color filter 23 is partially overlapped with the black matrix 22 to avoid light leakage. The color filter 23 includes at least a red phosphor layer 23r, a green filter layer 23g, and a blue filter layer 23^. Further, in step 14, as shown in Fig. 2D, the -electrode layer 24 is formed on the black moment 1^22 and the shirt color filter 23. Finally, step 15 is performed, and at the same time, the second layer is formed according to the pattern described above - the insulating layer h covers the electrode layer 24 only partially at the electrode layer μ t t = the edge layer 25. At this time, the color ruthenium substrate 2 according to the present invention is completed. = 'More advanced', the substrate lanthanum is a p ^ ^ ^ ray L permeable to the substrate 21. Color filter, light J: Bu, 'When the light material is made, the light L can pass through the color filter 23. / 24 material is transparent indium tin oxide (Indium Tin

Oxide, ΙΊΌ). The rim from the edge layer is preferably also a transparent material. Therefore, when 9 200817730

Sanda number: TW3221PA Light L passes through the substrate 21, the openings 22a, the color filter 23, and the electrode layer 24, and passes through the color filter substrate 2〇 in the Y direction, the red filter layer 23r, the green filter The layer 23g and the blue filter layer 23b respectively color the light ray L· to form a red light R, a green light ray, and a blue light b. Further, the black matrix 22 is an opaque region of the color filter substrate 2, which is shielded and exposed by a mask (not shown) to be formed on the substrate 21. The reticle has a pattern opposite to the above pattern. The insulating layer 25 can also be shielded and exposed by the same mask to be formed on the electrode layer 24. Thus, the black matrix 22 and the insulating layer 24 have the same pattern. Since the black matrix 22 and the insulating layer 25 have the same pattern, the electrode layer 24 located above the portion where the color filter 23 and the black matrix 22 overlap is covered by the insulating layer 25. The electrode layer 24 corresponds to the openings 22a of the black matrix 22 and is not covered by the insulating layer 25 to maintain the optical characteristics of the light L passing through the color filter substrate through the openings 22a. Second Embodiment Referring to Figure 3, there is shown a schematic view of a liquid crystal display panel in accordance with a second embodiment of the present invention. The liquid crystal display panel 100 includes a thin film substrate substrate (TFT substrate) 30, a liquid crystal layer 40, and a color filter substrate (CF substrate), for example, the color light of the first embodiment. Tablet 200817730

Sanda number: TW3221PA substrate 20. The color filter substrate 20 is disposed in parallel on the thin film transistor substrate 30' and includes a substrate 21, a black matrix 22, a color filter 23, an electrode layer 24, and an insulating layer. Layer 25. The black matrix 22 is disposed on the substrate 21 and has a plurality of openings 22a which are exposed portions of the substrate 21. The color filter 23 is disposed on the substrate 21 corresponding to the openings 22a, and the color filter 23 is partially overlapped with the black matrix 22 to avoid light leakage. The color filter 23 includes at least a black color filter layer 23γ, a green filter layer 23g, and a blue color filter layer 23b for coloring a light L. The electrode layer 24 is provided on the black matrix 22 and the color filter 23. The insulating layer 25 is disposed on the electrode layer 24, and the insulating layer 25 only partially covers the electrode layer 24. The black matrix 22 has the same pattern as the insulating layer 25. The liquid crystal layer 40 is disposed between the thin film transistor substrate 30 and the color filter substrate 20. In the color filter substrate 20, the substrate 21 is a transparent glass substrate, the color filter 23 is a light transmissive material, and the electrode layer 24 is made of indium tin oxide (ITO). ). The insulating layer " is preferably also a transparent material. Therefore, the light ray L can pass through the color filter substrate 20 in the Y direction via the substrate 21, the openings 22a, the color filter 23, and the transparent electrode 24, and is respectively filtered by the red filter layer 23r and the green filter. The light layer 23g and the blue filter layer 23b are colored to form a red first R, a green light G, and a blue light B. An electric field is applied between the electrode layer 24 of the color filter substrate 20 and the electrode layer 34 of the thin film transistor substrate 30, so that liquid crystal molecules in the liquid crystal layer 40 can be rotated. The black matrix 22 and the insulating layer 25 are made of the same one of the masks (not shown) 11 200817730

Sanda number: TW3221PA ^ is formed by the action of masking and exposure, so that the black matrix 22 and the insulating layer 25 have the same pattern. Light rays L passing through the openings 22a, the color filter 23, and the electrode layer 24 are not affected by the insulating layer 25. And since the insulating layer 25 has the same pattern as the black matrix 22, the liquid crystal display panel 100 can maintain its optical characteristics such as retardation or transmittance of light. On the other hand, since the electrode layer 24 located at the overlap of the color filter 23 and the black matrix 22 has a high height, when the foreign matter falls near the edge of the black matrix 22, the electrode layer 24 formed is bumped. The phenomenon. At this time, since the electrode layer 24 is isolated by the insulating layer 25, the electrode layer 24 is not in contact with the electrode layer 34 of the thin film transistor substrate 30. This ensures that the electrode layer 24 does not short-circuit with the electrode layer 34 of the thin film transistor substrate 30, thereby avoiding the problem of occurrence of a dead pixel. The color filter substrate of the liquid crystal display panel according to the preferred embodiment of the present invention and the method for fabricating the same are used in a conventional color filter substrate, and an insulating layer having the same pattern as the black matrix is further formed on the electrode layer. . The utility model has the following advantages: 1. When the electrode layer is convex due to foreign matter in the process, it is isolated by the insulating layer, and is not in contact with the electrode layer of the thin film transistor substrate, thereby avoiding a short circuit and causing a dead pixel. The problem, which in turn increases the yield of the product. 12 200817730

Sanda number · TW3221PA 2. Increased production efficiency due to the need to repair the machine without using the repair machine. 3. Since it is only necessary to simply add the step of forming the insulating layer in the process of the conventional color filter substrate, it is not necessary to significantly change the original production process, and the production cost is not significantly increased. 4. The insulating layer and the black matrix are covered and exposed by the same mask, which saves the cost of making the mask. While the invention has been described above in terms of preferred embodiments, it is not intended to limit the invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 13 200817730

Sanda number: TW3221PA ^ [Simple description of the drawing] Fig. 1 is a flow chart showing a method of manufacturing a color filter substrate according to the present invention; Fig. 2A is a view showing a step 11 of Fig. 1; FIG. 2 is a schematic diagram of step 13 of FIG. 1; FIG. 2D is a schematic diagram of step 14 of FIG. 1; FIG. 2E is a schematic diagram of step 15 of FIG. FIG. 3 is a schematic view showing a liquid crystal display panel according to a second embodiment of the present invention. 14 200817730

达达编号·· TW3221PA ' [Main component symbol description] 20 : Color filter substrate 21 : Substrate 22 : Black matrix 22a : Opening 23 : Color filter 23b : Blue filter, Light layer 23g : Green filter Layer ' 23r : red filter layer 24 , 34 : electrode layer 25 : insulating layer 30 : thin film transistor substrate 40 : liquid crystal layer 10 0 · liquid crystal display panel B : blue light G : green light L : light R : red light Y: direction 15

Claims (1)

200817730 达达号: TW3221PA X. Patent application scope: 1. A color filter substrate 'includes: a substrate; a black matrix disposed on the substrate and having a plurality of openings Opening the exposed portion of the substrate; a color filter disposed on the substrate corresponding to the openings for coloring a light; an electrode layer disposed on the black matrix and the a color filter; and an insulating layer disposed on the electrode layer, and the insulating layer only partially covers the electrode layer; wherein the black matrix and the insulating layer have the same pattern 〇2· The color filter substrate of the invention of claim 2, wherein the substrate is a transparent glass substrate. The color illuminator substrate according to claim 1, wherein the color filter is a light transmissive material. 4. The color filter and light substrate of the above-mentioned π patent (4), wherein the light penetrates through the color light-receiving sheet, and the color filter colores the light to form red light, green light, and Blue light. 5. The color grading substrate according to the above-mentioned item, wherein the black matrix is a light-transmitting region on the color filter substrate. 6. The color filter substrate according to the above application, wherein the material of the gastric electrode layer is indium tin oxide (In 2008 Tin Oxide, 16 200817730 Sanda number: TW3221PA ITO). 7. A liquid crystal display panel comprising: a thin film substrate (TFT substrate); a color filter substrate disposed in parallel on the thin film transistor substrate, the color filter substrate comprising: a substrate; a black matrix disposed on the substrate, # and having a plurality of openings, the openings are exposed portions of the substrate; a color filter (color filter) disposed on the substrate Corresponding to the openings, a light color, an electrode layer is disposed on the black matrix and the color filter; and an insulating layer is disposed on the electrode layer, and the insulating layer The electrode layer is only partially covered; and a liquid crystal layer is disposed between the thin film transistor substrate and the color filter and the light substrate; wherein the black matrix and the insulating layer have the same pattern 〇8 The liquid crystal display panel of claim 7, wherein the substrate is a transparent glass substrate. 9. The liquid crystal display panel of the seventh item of the patent application scope, wherein the color filter is a light-transmitting material. 10. If the liquid crystal display panel described in claim 9 is applied for, the light is transmitted through the color filter, which is colored in red by the color filter in the TW3221PA. Light, green light and blue light. The liquid crystal display panel of claim 7, wherein the black matrix is an opaque region on the color filter substrate. The liquid crystal display panel according to claim 7, wherein the material of the electrode layer is indium tin oxide (ITO), 丨3. A method for manufacturing a color filter substrate, The method includes: providing a substrate; forming a black matrix on the substrate according to a pattern, the black matrix has a plurality of openings, the openings are exposed portions of the substrate; forming a color a filter is disposed on the substrate corresponding to the openings; an electrode layer is formed on the black matrix and the color light-receiving sheet; and an insulating layer is formed on the electrode layer according to the pattern, and the insulating layer is only The electrode layer is partially covered. The manufacturing method according to claim 13, wherein the substrate is a transparent glass substrate. The manufacturing method according to claim 13, wherein the filter layer is a light transmissive material. The manufacturing method according to claim 13, wherein the black matrix is an opaque region on the color slab substrate. The manufacturing method according to claim n, wherein the material of the bakelite layer is Indium Tin Oxide (ITO). 18