Color film substrate, manufacturing method thereof, display panel and display device

Abstract

The invention provides a color film substrate and a manufacturing method thereof, a display panel and a display device.The color film substrate comprises a substrate body, a color resistance layer and a light-transmitting glue layer; the color resistance layer is arranged on one side of the substrate; the light-transmitting adhesive layer comprises an adhesive layer main body and a retaining wall structure; the adhesive layer main body covers the surface of one side, far away from the substrate, of the color resistance layer; the retaining wall structure is arranged on the surface of the side, away from the color resistance layer, of the adhesive layer main body, the retaining wall structure is located in the non-display area of the color film substrate, and the orthographic projection of the retaining wall structure on the substrate is located on the side, close to the display area, of the orthographic projection of the frame sealing adhesive on the substrate; the surface of the side, away from the color resistance layer, of the retaining wall structure is used for abutting against the array substrate. The retaining wall structure is used for preventing water vapor from diffusing to the display area, so that hydration reaction between the water vapor and a green color resistance material in the color resistance layer can be avoided, the situation that the light transmittance of green light is reduced due to hydration of the green color resistance can be avoided, and the phenomenon that corner areas of the display area turn red is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of display panels, and in particular to a color film substrate and a manufacturing method thereof, a display panel and a display device. Background Art

[0002] With the rapid development of the smart car industry, the industry's performance requirements for in-vehicle display panels have gradually increased, such as requiring display panels to have high screen transmittance and be able to adapt to a variety of different working environments. At present, high-transmittance display panels often have the problem of redness in the edge area of ​​the display panel during reliability evaluation experiments, which means that high-transmittance display panels are difficult to adapt to a variety of different working environments. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a color film substrate and a manufacturing method thereof, a display panel and a display device, which can solve the problem of redness in the edge area of ​​the display panel in the prior art.

[0004] To achieve the above-mentioned purpose, the embodiment of the present disclosure provides a color film substrate, which has a display area and a non-display area surrounding the display area; the color film substrate comprises:

[0005] substrate substrate;

[0006] A color resist layer is disposed on one side of the base substrate;

[0007] A light-transmitting adhesive layer comprises an adhesive layer body and a retaining wall structure; the adhesive layer body covers a surface of the color resist layer on a side away from the base substrate; the retaining wall structure is arranged on a surface of the adhesive layer body on a side away from the color resist layer, the retaining wall structure is located in the non-display area, and the orthographic projection of the retaining wall structure on the base substrate is located on a side of the orthographic projection of the sealing glue on the base substrate close to the display area; the surface of the retaining wall structure on a side away from the color resist layer is used to abut against the array substrate; the retaining wall structure is used to prevent water vapor from diffusing to the display area.

[0008] Optionally, the light-transmitting adhesive layer is made of light-curing organic adhesive.

[0009] Optionally, the photocurable organic glue contains polyimide.

[0010] Optionally, the retaining wall structure surrounds the display area in a closed ring shape.

[0011] Optionally, the thickness of the retaining wall structure in a direction perpendicular to the substrate is greater than or equal to 1 μm.

[0012] Optionally, the retaining wall structure includes a plurality of long strips of water retaining strips, and two adjacent water retaining strips are connected to form a closed ring; the width of each water retaining strip along a cross section perpendicular to its own extension direction ranges from 1 μm to 2 μm.

[0013] As another technical solution, the present invention further provides a display panel, comprising:

[0014] The color film substrate as described above;

[0015] The array substrate is arranged opposite to the color filter substrate, and liquid crystal material is filled between the array substrate and the color filter substrate; the side surface of the retaining wall structure of the color filter substrate close to the array substrate abuts against the surface of the array substrate.

[0016] Optionally, the display panel further includes:

[0017] The frame-sealing glue is arranged between the array substrate and the color film substrate, and respectively abuts against the main surfaces of the glue layers of the array substrate and the color film substrate; the frame-sealing glue surrounds the side of the retaining wall structure away from the display area; the thickness of the retaining wall structure in a direction perpendicular to the array substrate is the same as the thickness of the frame-sealing glue.

[0018] As another technical solution, the present invention further provides a display panel, which includes the display panel as described above.

[0019] As another technical solution, the present invention also provides a method for manufacturing a color filter substrate, which comprises:

[0020] forming a color resist layer on one side of the substrate;

[0021] Applying a photocurable organic glue on the surface of the color resist layer to form a photocurable organic glue layer covering the display area and the non-display area;

[0022] The photocurable organic glue layer is cured by using a half-tone mask; wherein the transmittance of the half-tone mask in the area corresponding to the retaining wall structure of the color filter substrate is greater than the transmittance of the area corresponding to the glue layer body of the color filter substrate, so that the cured thickness of the photocurable organic glue layer in the area corresponding to the retaining wall structure is greater than the cured thickness in the area corresponding to the glue layer body;

[0023] Uncured light-curing organic glue is removed to form the light-transmitting glue layer having the retaining wall structure.

[0024] The present invention has at least the following beneficial effects:

[0025] The color filter substrate provided by the embodiment of the present invention has a light-transmitting adhesive layer covering the surface of the color resist layer, the light-transmitting adhesive layer includes an adhesive layer body and a retaining wall structure arranged in the non-display area, and the surface of the retaining wall structure on the side away from the color resist layer is used to abut against the array substrate. In this way, after the color filter substrate is connected to the array substrate, the retaining wall structure can prevent water vapor in the external environment from entering the display area, thereby avoiding the hydration reaction between water vapor and the green color resist material in the color resist layer, and further avoiding the green color resist from reducing the transmittance of green light due to hydration, thereby ensuring the transmittance of the display panel and effectively avoiding the occurrence of redness in the corner area of ​​the display area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a display panel in the related art when a corner area turns red;

[0027] Figure 2 A schematic diagram of a partial cross-sectional structure of a color filter substrate provided by an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the fluorescence reaction mechanism and hydration reaction mechanism of Hybrid Green material;

[0029] Figure 4A is the molecular formula of UV-OC glue containing polyimide;

[0030] Figure 4B This is a schematic diagram of the molecular stereostructure of UV-OC adhesive containing polyimide after curing;

[0031] Figure 5A is the molecular formula of acrylic resin;

[0032] Figure 5B This is a schematic diagram of the molecular three-dimensional structure of acrylic resin after curing;

[0033] Figure 6 A schematic structural diagram of a color filter substrate provided by an embodiment of the present invention at a front viewing angle;

[0034] Figure 7 A flow chart of a method for manufacturing a color filter substrate provided by an embodiment of the present invention;

[0035] Figure 8 For Figure 7 The corresponding process flow diagram;

[0036] Fig. 9 The present invention provides a curve diagram showing the corresponding relationship between the exposure amount and the cured thickness during the curing process of the light-transmitting adhesive layer. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0038] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0039] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0040] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0041] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0042] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0043] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0044] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0045] In a liquid crystal display panel, a color filter substrate and an array substrate usually serve as core units. Specifically, the array substrate is used to provide display light to the color filter substrate, and the color filter substrate is used to filter light of corresponding colors using multiple color resistance units therein to achieve color picture display.

[0046] In the related art, in order to improve the screen transmittance, the green color resistance unit in the color filter substrate is made of a hybrid green material, which has a high transmittance to light, so that the color filter substrate has a high transmittance, which can reduce light loss and thus reduce the overall power consumption of the display panel. However, in the process of performing reliability evaluation experiments (Temperature, Humidity and Other reliability tests, hereinafter referred to as THO experiments) on the display panels in the related art, they usually cannot pass the high temperature and high humidity environment test. Specifically, after the display panel to be tested works for a certain test period in an environment of light, high temperature, high humidity and oxygen isolation, the corners of the display area will have the following problems: Figure 1 The reddening phenomenon shown in FIG. 1 is the color decay phenomenon, which means that a display panel with high transmittance is difficult to work in a high temperature and high humidity environment. Therefore, in a high temperature and high humidity environment, the green color resist can only be made of other color resist materials with low transmittance instead of using Hybrid Green materials, which will lead to higher light loss of the display panel and further higher overall power consumption of the display panel.

[0047] Please refer to Figure 2 In order to solve the above technical problems, an embodiment of the present application provides a color film substrate 1, which has a display area A and a non-display area B surrounding the display area A; wherein the display area A is an area for allowing display light to pass through to display images; the non-display area B is not used to display images.

[0048] The color filter substrate 1 includes a base substrate 11, a color resist layer 12 and a light-transmitting adhesive layer 13. The base substrate 11 is a light-transmitting substrate, such as a glass substrate, to serve as the light-emitting surface of the color filter substrate 1. The color resist layer 12 is disposed on one side of the base substrate 11, and has a plurality of red, green and blue resist units 121 in the color resist layer 12, to filter the light incident from the side away from the base substrate 11, so as to convert the white light into the corresponding color, and then emit it through the base substrate 11, thereby completing the color picture display. Moreover, the plurality of red, green and blue resist units 121 are distributed in the display area A.

[0049] like Figure 2As shown, the light-transmitting adhesive layer 13 is arranged on the side of the color-resisting layer 12 away from the base substrate 11, and the light-transmitting adhesive layer 13 is light-transmitting, so that light can pass through and enter the color-resisting layer 12. The light-transmitting adhesive layer 13 includes an adhesive layer body 131 and a retaining wall structure 132. The adhesive layer body 131 covers the surface of the side of the color-resisting layer 12 away from the base substrate 11 to seal the surface of the color-resisting layer 12, thereby reducing the risk of water vapor entering the color-resisting layer 12; the retaining wall structure 132 is arranged on the surface of the adhesive layer body 131 away from the color-resisting layer 12, that is, the retaining wall structure 132 is protruding relative to the surface of the adhesive layer body 131; the surface of the retaining wall structure 132 away from the color-resisting layer 12 is used to abut against the array substrate 2, so that after the color filter substrate 1 is connected to the array substrate 2, the retaining wall structure 132 can abut against the array substrate 2. 2 is sealed and connected between the color film substrate 1 and the array substrate 2, thereby preventing water vapor from entering the space between the glue layer body 131 and the array substrate 2; moreover, the retaining wall structure 132 is located in the non-display area B, and the orthographic projection of the retaining wall structure 132 on the base substrate 11 is located on the side of the orthographic projection of the frame sealant 4 on the base substrate 11 close to the display area A, so that after the color film substrate 1 and the array substrate 2 are connected and packaged, the retaining wall structure 132 is located in the area surrounded by the frame sealant 4, so even if water vapor invades the area surrounded by the frame sealant 4, the retaining wall structure 132 can further block the water vapor, thereby preventing the water vapor from diffusing to the display area A. Specifically, the non-display area B is located at the periphery of the display area A, so the water vapor in the external environment will enter the display area A from the non-display area B, and then enter the display area A of the color resist layer 12 and react with the green color resist material, and the retaining wall structure 132 proposed in this embodiment can prevent the water vapor from diffusing to the display area A, thereby further reducing the risk of water vapor entering the color resist layer 12.

[0050] The inventors have found that the main material for green light transmission in Hybrid Green materials is Y231 pigment, such as Figure 3 As shown in the figure, the fluorescence mechanism of Y231 pigment is as follows: Y231 pigment is illuminated and absorbs energy to form excited state Y231*, and Y231* undergoes fluorescence resonance energy transfer ( The Y231* material undergoes a radiative transition and releases photons during the FRET process, thereby achieving a green fluorescence reaction. The heat energy released during the FRET process of Y231* will be transferred to the G58 molecules in the Hybrid Green material, and the G58 molecules will be excited to become G58*; and when G58* comes into contact with water molecules, G58* will undergo a hydration reaction with water molecules and form a hydrate of G58. Moreover, the inventors have found through experimental results that the absorption spectrum of the hydrate of G58 has an additional absorption peak compared to that of G58, which leads to a decrease in the transmittance of the Hybrid Green material to green light, and then to a decrease in the transmittance of the green color block to green light, which is manifested as local reddening on a macro scale; specifically, in multiple THO experiments, it was found that the green light transmittance of the reddening area of ​​the display panel was about 7% lower than that of the non-reddening area; it can be seen that the intrusion of water vapor leads to the occurrence of reddening in the corners of the display area. Moreover, since the outer edge of the non-display area is closer to the external environment, the possibility of water vapor intrusion is correspondingly higher. Therefore, the display panel in the related art usually has red corners in a high temperature and high humidity environment.

[0051] The retaining wall structure 132 proposed in the embodiment of the present application can effectively prevent water vapor from entering the display area A by blocking water vapor in the non-display area B, thereby avoiding the hydration reaction between water vapor and G58* in the Hybrid Green material, and further avoiding the green color resist in the color resist layer 12 from reducing the transmittance of green light, thereby ensuring the transmittance of the display panel and effectively avoiding the occurrence of redness in the corner area of ​​the display area A.

[0052] In some embodiments, the retaining wall structure 132 surrounds the display area A in a closed ring, that is, the retaining wall structure 132 is continuous in an extension direction parallel to the edge without any gaps, thereby preventing water vapor from entering the display area A through the gaps in the retaining wall structure 132 .

[0053] In some embodiments, Figure 2 and Figure 6 As shown, the retaining wall structure 132 includes a plurality of long strips of water retaining strips 1321, and two adjacent water retaining strips 1321 are connected to make the retaining wall structure in a closed ring; the size range of the width D of each water retaining strip 1321 along the cross section perpendicular to its own extension direction is 1μm to 2μm, that is, the size range of the width D of each water retaining strip 1321 in the direction parallel to the base substrate 11 and perpendicular to its own extension direction is 1μm to 2μm. Within this size range, each water retaining strip 1321 is sufficient to block water vapor and will not cause the manufacturing cost of the color film substrate 1 to be too high.

[0054] For example, Figure 6 As shown, the display area A is rectangular in shape, and the retaining wall structure includes four water retaining strips 1321 which are parallel to the four edges of the display area A respectively.

[0055] In some embodiments, the thickness of the retaining wall structure 132 in the direction perpendicular to the base substrate 11 is greater than or equal to 1 μm, so that the surface of the retaining wall structure 132 can abut against the surface of the array substrate 2 and the retaining wall structure 132 can have a good water vapor blocking effect.

[0056] In some embodiments, the light-transmitting adhesive layer 13 is made of a light-curing organic adhesive (UV-OC). Accordingly, in the process of manufacturing the light-transmitting adhesive layer 13, a light-curing process can be used to shape the light-transmitting adhesive layer 13. Specifically, the UV-OC material has a high structural density and low water absorption, so it can effectively prevent water vapor from entering the display area A, thereby effectively avoiding the problem of redness around the display area A of the display panel.

[0057] Furthermore, in some preferred embodiments, the above-mentioned light-curable organic glue contains polyimide. Figure 4A As shown in Figure 2, the side chain structure of polyimide molecules is complex, and after curing, polyimide can form Figure 4B The dense three-dimensional structure shown can effectively block water vapor. Therefore, the retaining wall structure 132 made of a light-curing organic adhesive containing polyimide can effectively prevent water vapor from entering the display area A, thereby effectively avoiding the problem of red corners of the display area A.

[0058] As another technical solution, an embodiment of the present application provides a display panel, which includes the color filter substrate 1 and the array substrate 2 as described above. Figure 2 As shown, the array substrate 2 and the color film substrate 1 are arranged opposite to each other, and the liquid crystal material 3 is filled between the array substrate 2 and the color film substrate 1; the surface of the retaining wall structure 132 of the color film substrate 1 close to the array substrate 2 is abutted against the surface of the array substrate 2, so that the retaining wall structure 132 is sealed and connected to the array substrate 2, so as to form a continuous water vapor blocking structure in a direction perpendicular to the array substrate 2, thereby preventing water vapor from entering the space between the array substrate 2 and the color film substrate 1.

[0059] For example, Figure 2 As shown, the display panel further has a support body 5 arranged in the display area A, which is formed between the array substrate 2 and the color film substrate 1 to maintain the cell thickness.

[0060] In some embodiments, the display panel further includes a frame sealant 4. Figure 2As shown, the sealant 4 is disposed between the array substrate 2 and the color film substrate 1, and the array substrate 2 and the color film substrate 1 are bonded by the sealant, and the sealant 4 is respectively bonded to the surface of the adhesive layer body 131 of the array substrate 2 and the color film substrate 1, so as to seal the space between the array substrate 2 and the color film substrate 1, thereby protecting the liquid crystal material 3 in the space and blocking impurities such as water vapor, oxygen or dust in the external environment that may affect the display effect. Specifically, as Figure 2 As shown, the glue layer body 131 covers both the display area A and the non-display area B, and the frame sealant 4 abuts against the surface of the glue layer body 131 in the non-display area B. The frame sealant 4 surrounds the side of the retaining wall structure 132 away from the display area A, that is, the retaining wall structure 132 is located inside the frame sealant 4; the thickness of the retaining wall structure 132 in the direction perpendicular to the array substrate 2 is the same as the thickness of the frame sealant 4, so that after the array substrate 2 and the color film substrate 1 are connected in a box, the surface of the retaining wall structure 132 close to the array substrate 2 abuts against the array substrate 2, so as to be sealed with the array substrate 2, thereby preventing water vapor from entering the display area A from the gap between the array substrate 2 and the retaining wall structure 132.

[0061] It should be noted that the frame sealant 4 disposed on the outer peripheral side is usually made of acrylic resin, such as Figure 5A As shown in the figure, the side chain structure of acrylic resin molecules is relatively simple, and the cured acrylic resin molecules are as follows Figure 5B The looser structure shown. By comparison Figure 4B and Figure 5B It can be seen that compared with acrylic resin, the photocurable organic glue containing polyimide has a stronger ability to block water vapor. Therefore, even if water vapor enters the area surrounded by the frame sealant 4 from the external environment, the water vapor can be further blocked by the retaining wall structure 132 and cannot enter the display area A, and thus cannot come into contact with the color resist material in the color resist layer 12.

[0062] As another technical solution, an embodiment of the present application provides a display device, which includes the display panel as described above.

[0063] As another technical solution, the present application embodiment provides a method for manufacturing a color filter substrate 1, such as Figure 7 and Figure 8 As shown, it includes the following steps:

[0064] S1, forming a color resist layer 12 on one side of a base substrate 11;

[0065] S2, coating a photocurable organic glue on the surface of the color resist layer 12 to form a photocurable organic glue layer 130 covering the display area A and the non-display area B;

[0066] Specifically, the surface of the photocurable organic adhesive layer 130 after coating is flat;

[0067] S3, using the half-tone mask 6 to cure the photocurable organic adhesive layer 130;

[0068] Specifically, in step S22, an exposure process may be used to photo-cure the photo-curable organic glue layer 130; the transmittance of the area corresponding to the retaining wall structure 132 of the halftone mask 6 is greater than the transmittance of the area corresponding to the glue layer body 131, so as to utilize the characteristic that the higher the light intensity of the photo-curable organic glue is, the faster the curing rate is, so that the cured thickness of the photo-curable organic glue layer 130 in the area corresponding to the retaining wall structure 132 is greater than the cured thickness of the area corresponding to the glue layer body 131, thereby forming a step difference between the retaining wall structure 132 and the glue layer body 131;

[0069] S4, removing the uncured light-curing organic glue to form a light-transmitting glue layer 13 having a retaining wall structure 132; specifically, the retaining wall structure 132 is located in the non-display area B.

[0070] Specifically, since the thickness of the photocurable organic glue layer 130 is consistent at all locations when it is uncured, and the cured thickness of the photocurable organic glue layer 130 in the area corresponding to the retaining wall structure 132 in step S22 is greater than the cured thickness in the area corresponding to the glue layer body 131, the amount of uncured photocurable organic glue in the area corresponding to the glue layer body 131 is greater than the amount of uncured photocurable organic glue in the area corresponding to the retaining wall structure 132.

[0071] Exemplarily, in step S23 , a cleaning and degumming process or a plasma degumming process may be used to remove the uncured light-curing organic glue.

[0072] For example, the transmittance of the area of ​​the half-tone mask 6 corresponding to the retaining wall structure 132 may be 100%.

[0073] For example, in the step of exposing the light-curable organic adhesive layer 130 using the halftone mask 6, the total exposure amount of the light-transmitting adhesive layer 13 is greater than or equal to 40 mj. Fig. 9 It can be seen from the curing process of the retaining wall structure 132 with a thickness of 3.9μm, 3.2μm and 2.5μm that when the exposure range is greater than or equal to 40mj, the step difference between the retaining wall structure 132 formed by the curing process and the adhesive layer main body 131 can reach greater than or equal to 1μm. This step difference size range can satisfy that the retaining wall structure 132 has a good water vapor blocking effect.

[0074] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A color film substrate, comprising a display area and a non-display area surrounding the display area; characterized in that: include: substrate substrate; A color resist layer is disposed on one side of the base substrate; A light-transmitting adhesive layer comprises an adhesive layer body and a retaining wall structure; the adhesive layer body covers a surface of the color resist layer on a side away from the base substrate; the retaining wall structure is arranged on a surface of the adhesive layer body on a side away from the color resist layer, the retaining wall structure is located in the non-display area, and the orthographic projection of the retaining wall structure on the base substrate is located on a side of the orthographic projection of the sealing glue on the base substrate close to the display area; the surface of the retaining wall structure on a side away from the color resist layer is used to abut against the array substrate; the retaining wall structure is used to prevent water vapor from diffusing to the display area.

2. The color film substrate according to claim 1, characterized in that: The light-transmitting adhesive layer is made of light-curing organic adhesive.

3. The color film substrate according to claim 2, characterized in that: The photocurable organic glue contains polyimide.

4. The color film substrate according to claim 1, characterized in that: The retaining wall structure surrounds the display area in a closed ring shape.

5. The color film substrate according to claim 1, characterized in that: The thickness of the retaining wall structure in a direction perpendicular to the substrate is greater than or equal to 1 μm.

6. The color film substrate according to claim 4, characterized in that: The retaining wall structure comprises a plurality of long strips of water retaining strips, and two adjacent water retaining strips are connected so that the retaining wall structure is in a closed ring shape; The width of each water retaining strip along a cross section perpendicular to its own extending direction ranges from 1 μm to 2 μm.

7. A display panel, characterized in that: include: The color film substrate according to any one of claims 1 to 6; The array substrate is arranged opposite to the color filter substrate, and liquid crystal material is filled between the array substrate and the color filter substrate; the side surface of the retaining wall structure of the color filter substrate close to the array substrate abuts against the surface of the array substrate.

8. The display panel according to claim 7, characterized in that: Also includes: A frame sealing adhesive is disposed between the array substrate and the color filter substrate; the array substrate and the color filter substrate are bonded together by the frame sealing adhesive; The frame-sealing adhesive surrounds a side of the retaining wall structure away from the display area; the thickness of the retaining wall structure in a direction perpendicular to the array substrate is the same as the thickness of the frame-sealing adhesive.

9. A display device, characterized in that: Comprising the display panel as claimed in claim 7 or 8.

10. A method for manufacturing a color film substrate, characterized in that: include: forming a color resist layer on one side of the substrate; Applying a photocurable organic glue on the surface of the color resist layer to form a photocurable organic glue layer covering the display area and the non-display area; The photocurable organic glue layer is cured by using a half-tone mask; wherein the transmittance of the half-tone mask in the area corresponding to the retaining wall structure of the color filter substrate is greater than the transmittance of the area corresponding to the glue layer body of the color filter substrate, so that the cured thickness of the photocurable organic glue layer in the area corresponding to the retaining wall structure is greater than the cured thickness in the area corresponding to the glue layer body; Uncured light-curing organic glue is removed to form a light-transmitting glue layer having the retaining wall structure.

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