Color film substrate and display panel

Abstract

The utility model discloses a kind of color film substrate and display panel, it is related to the field of semiconductor display, comprising: substrate;Array arrangement's support column, opening is equipped between every two adjacent support column in row;Array arrangement's color film block, the color film block is set at the opening place.The color film block includes red color film block, green color film block and blue color film block;The refractive index of the support column is different from the refractive index of color film block, the height of the support column is not less than the height of red color film block, the refractive index difference of the support column and each color film block is all ≥0.01.The utility model increases the size of component by increasing support column, enhances panel anti-hitting pressure capacity, improves elastic recovery rate, effectively reduces the light leakage risk caused by external force extrusion.

Description

Technical Field

[0001] This utility model belongs to the field of semiconductor technology, and in particular relates to a color filter substrate and a display panel. Background Technology

[0002] In the display field, a pixel area is composed of RGB three colors, where RGB represents red, green, and blue, respectively. In a three-color image formation, each pixel is composed of information from these three colors. By controlling the intensity or brightness values ​​of the three color channels in each pixel, it is possible to prevent light from mixing and creating different colors, thus ensuring that the displayed color image does not exhibit light shift phenomena.

[0003] In the field of semiconductor display, the three-color light-emitting areas are usually distributed in layers on the substrate. However, due to its size and material, silicon-based OLEDs have problems such as weak panel pressure resistance and low elastic recovery rate. At the same time, the three colors are prone to light source shift when lit. Based on this, this utility model designs a color filter substrate and display panel. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art, and to propose a color filter substrate and display panel.

[0005] In a first aspect, this utility model discloses a color filter substrate, comprising: substrate; The array of support columns has an opening between two adjacent support columns in each row; An array of color filter blocks, wherein the color filter blocks are disposed at the opening.

[0006] In the aforementioned color filter substrate, the color filter block includes a red color filter block, a green color filter block, and a blue color filter block; The refractive index of the support column is different from that of the color filter.

[0007] In the aforementioned color filter substrate, the height of the red color filter block is higher than that of the green color filter block, and the height of the green color filter block is higher than that of the blue color filter block.

[0008] In the aforementioned color filter substrate, the height of the support pillar is not less than the height of the red color filter block.

[0009] In the aforementioned color filter substrate, the refractive index difference between the support pillar and each color filter block is ≥0.01.

[0010] In the aforementioned color filter substrate, the support pillar material includes thermoplastic non-crystalline resin, photosensitive polyimide, or OC adhesive.

[0011] In the above-mentioned color filter substrate, the thermoplastic non-crystalline resin is selected from at least one of polystyrene or polystyrene derivatives.

[0012] Secondly, this utility model discloses a display panel, including the aforementioned color filter substrate.

[0013] The beneficial effects of this utility model are as follows: 1. By setting support pillars between color filters and setting the refractive index of the support pillars to a certain difference from the refractive index of the color filters, the color brightness is improved and the optical path offset is prevented when the three colors are lit.

[0014] 2. By setting support columns, the panel's resistance to pressure can be enhanced, and the elastic recovery rate can be improved. This can reduce the risk of light leakage caused by external pressure, increase the critical stress value for light leakage under pressure, and prevent the color film block from deforming after being squeezed, thus effectively protecting the three-color module and further improving the stability of the panel.

[0015] 3. The image display technology of this utility model can be improved using existing display devices without the need for additional hardware, thus reducing costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a color filter substrate provided by this utility model; Figure 2 This utility model provides a distribution diagram of blue color filter blocks in a color filter substrate. Figure 3 This is a fabrication distribution diagram of green color filter blocks in a color filter substrate provided by this utility model; Figure 4 This is a fabrication distribution diagram of the red color film blocks in a color filter substrate provided by this utility model.

[0017] Figure 5 This is a schematic diagram of a color filter substrate provided by this utility model in which the red, green, and blue color filter blocks are all of the same height.

[0018] In the diagram: 1. Substrate; 2. Color filter block; 21. Blue color filter block; 22. Green color filter block; 23. Red color filter block; 3. Support pillar; 41. Planarization layer 1; 42. Planarization layer 2; 43. Planarization layer 3; 5. Reflow layer; 6. Encapsulation layer. Detailed Implementation

[0019] To facilitate understanding of this application and to make the aforementioned objectives, features, and advantages of this application more apparent, a detailed description of specific embodiments of this application is provided below in conjunction with the accompanying drawings. Numerous specific details are set forth in the following description to provide a thorough understanding of this application, and preferred embodiments are shown in the accompanying drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application. This application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise explicitly specified. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is only for describing particular implementations and is not intended to limit the scope of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Reference Figures 1-5 This utility model provides a color filter substrate, which includes the following portions along the vertically upward direction: substrate1; The array of support columns 3 has an opening between two adjacent support columns 3 in each row; Color filter blocks 2 arranged in an array, the color filter blocks 2 being disposed at the opening; Through the above-mentioned design, the color filter block 2 is positioned between multiple spaced support columns 3, thereby forming a three-dimensional protective structure.

[0021] In one feasible embodiment, the color filter block 2 includes a red color filter block 23, a green color filter block 22, and a blue color filter block 21.

[0022] In one feasible embodiment, the red color film block 23, the green color film block 22 and the blue color film block 21 have different heights, wherein the red color film block 23 is higher than the green color film block 22, and the green color film block 22 is higher than the blue color film block 21. The key design feature of this embodiment lies in the height of the color filter block 2. In this embodiment, the red color filter block 23 is taller than the green color filter block 22, and the green color filter block 22 is taller than the blue color filter block 21. This height difference design is optimized based on the characteristics of different color light waves, which can better match the optical characteristics of the display functional layer and improve the display effect.

[0023] In one feasible embodiment, the red color filter block 23, the green color filter block 22, and the blue color filter block 21 are at the same height, such as... Figure 5 As shown, this design simplifies the manufacturing process and is particularly suitable for display applications that require high thickness uniformity.

[0024] In one feasible embodiment, the height of the support column 3 is not less than the height of the red colored film block 23, specifically including the following two implementation methods: In the first embodiment, the height of the red color film block 23 is flush with the height of the support column 3. In this configuration, the blue color film block 21 and the green color film block 22 can either be set to the same height as the red color film block 23, or they can be set according to the aforementioned stepped height difference of red height > green height > blue height. The advantage of aligning the red color film block 23 with the support column 3 is twofold: firstly, it facilitates establishing a unified height benchmark during manufacturing, simplifying process control; secondly, it helps reduce the material usage of the second flattening layer 42, reducing processing difficulty and improving process economy.

[0025] In the second embodiment, the height of the red color filter block 23 is lower than the height of the support column 3. In this configuration, the blue color filter block 21 and the green color filter block 22 can also be set to the same height as the red color filter block 23, or follow a height gradient of red > green > blue. The main advantage of using a support column 3 with a greater height than the red color filter block 23 is that the support column 3 can more effectively act as a mechanical spacer, concentrating stress on the support column rather than the color filter block when subjected to external pressure. This significantly reduces the risk of the red color filter block 23 being directly subjected to pressure, effectively protecting the integrity of the color filter structure, and thus improving the overall reliability and service life of the color filter substrate.

[0026] In one feasible embodiment, the refractive index difference between the support column 3 and each color filter block 2 is ≥0.01. The above design enables light to be effectively reflected at the interface between the color filter block and the support column, avoiding light leakage to adjacent color filter blocks. This can effectively prevent light crosstalk between adjacent color filter blocks 2 and improve display contrast.

[0027] In one feasible embodiment, the support column 3 material includes thermoplastic non-crystalline resin or photosensitive polyimide or OC adhesive. The thermoplastic non-crystalline resin is selected from at least one of polystyrene or polystyrene derivatives. The support column 3 material can also serve as a spacer to maintain the thickness between the color filter substrate and the array substrate, and play a certain role in resisting pressure, thereby improving the strength of the display panel.

[0028] The support column 3 is made using photosensitive resin, sensitizer, solvent and additives. The solvent is used to dissolve the photosensitive resin and sensitizer to form a liquid for coating. The additive can be a dye, which can reduce light reflection, improve pattern accuracy during exposure, and obtain a clearer graphic outline during development.

[0029] Furthermore, since the multiple support columns 3 are flush, in the actual process, when the multiple color filter blocks 2 are designed with different heights, a flattening process is actually reduced. That is, the multiple support columns 3 themselves can be used to make the color filter blocks 2 flush, thereby saving process and cost.

[0030] In one feasible embodiment, a planarization layer 41 is deposited on the substrate 1 using OC adhesive to solve the problem of unevenness of the substrate 1. Thus, the substrate 1 becomes flat after OC adhesive treatment. Furthermore, the layer containing the color filter block 2 and the support pillar 3 is also formed by OC adhesive deposition to form a planarization layer 42, which solves the problem of unevenness between the color filter block 2 and the support pillar 3. A reflow layer 5 and a planarization layer 43 are also disposed above the planarization layer 42. The planarization layer 43 is encapsulated by an encapsulation layer 6 to complete the processing.

[0031] This utility model also discloses a manufacturing process for the aforementioned color filter substrate, including the following steps: S1: Planarize the substrate 1, wherein the planarization is performed by vapor deposition of OC adhesive to form a planarization layer 41; S2: Fabricate support pillars 3 and arrange support pillars 3 on substrate 1. The support pillars 3 are fabricated using the track process in photolithography. During the fabrication of support pillars 3, the position of color filter block 2 is reserved when arranging support pillars 3. S3: Process the red color filter block 23, green color filter block 22, and blue color filter block 21 in the pixel area, processing them sequentially in the order of blue, green, and red. Figures 2-4As shown, the three color filter blocks 2 can be designed to have the same height, or, under the concept of optimized display, the red color filter block 23 can be taller than the green one, which is taller than the blue one. S4: Perform a second planarization process on the support pillar 3 and the upper side of the pixel area to form a second planarization layer 42. Then, form a ReFlow layer 5 on the second planarization layer 42, and then perform a third planarization on the ReFlow layer 5.

[0032] S5: The top layer is encapsulated to form encapsulation layer 6.

[0033] In the display device manufactured according to the above process, the color filter block 2 will be protected by the support columns 3 on both sides. On the one hand, it enhances the panel's resistance to pressure, improves the elastic recovery rate, and reduces the risk of light leakage caused by external pressure. On the other hand, it prevents the color filter block 2 from deforming after being squeezed.

[0034] Meanwhile, the support column 3 itself is made of thermoplastic non-crystalline resin, which has the characteristics of being colorless and transparent, lightweight and rigid. Therefore, it can also prevent the light source from shifting when the color film block 2 is lit, and more effectively present different colors.

[0035] The present invention also discloses a display panel using the above-described color filter substrate.

[0036] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A color filter substrate, characterized in that, include: substrate(1); The array of support columns (3) has an opening between two adjacent support columns (3) in each row; Color filter blocks (2) arranged in an array, wherein the color filter blocks (2) are disposed at the opening; The color filter block (2) includes a red color filter block (23), a green color filter block (22) and a blue color filter block (21). The refractive index of the support column (3) is different from that of the color filter block (2); The substrate (1) and the color filter block (2) are connected by a planarization layer (41), which is made by OC adhesive vapor deposition.

2. The color filter substrate according to claim 1, characterized in that, The height of the red color film block (23) is higher than that of the green color film block (22), and the height of the green color film block (22) is higher than that of the blue color film block (21).

3. The color filter substrate according to claim 1, characterized in that, The red color film block (23), green color film block (22), and blue color film block (21) are all the same height.

4. The color filter substrate according to claim 2 or 3, characterized in that, The height of the support column (3) is not less than the height of the red colored film block (23).

5. The color filter substrate according to claim 4, characterized in that, The refractive index difference between the support column (3) and each color filter block (2) is ≥0.

01.

6. A display panel, characterized in that, Including the color filter substrate as described in any one of claims 1-5.

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