Display device, manufacturing method thereof and electronic equipment

Abstract

The invention provides a display device, a manufacturing method of the display device and electronic equipment, and relates to the field of display. The display device comprises a first substrate, a second substrate, a flowing medium layer and a retaining wall glue layer, the first substrate comprises a first electrode layer and a color film layer, the color film layer is covered with the first electrode layer, and the color film layer comprises a color filter layer located in a pixel area and a color filling layer located in a retaining wall area; the second substrate comprises a second electrode layer opposite to the first electrode layer; the flowing medium layer is arranged between the first electrode layer and the second electrode layer; the retaining wall glue layer is located in the retaining wall area, and the retaining wall glue layer is arranged between the color filling layer and the second electrode layer and is used for bonding the color filling layer and the second electrode layer, so that the color filling layer and the retaining wall glue layer form a retaining wall. According to the display device, the coating procedure for preparing the barrier wall can be reduced, the preparation yield of the barrier wall is improved, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of displays, and more particularly to a display device, a method for manufacturing the display device, and an electronic device. Background Technology

[0002] For display devices, such as liquid crystal displays (LCDs) or electronic paper (e-paper) displays, it is generally necessary to construct a barrier wall for support and use the cavity formed by the barrier wall to store the electronic paste.

[0003] Because the barrier wall needs a certain degree of hardness to ensure its compressive strength, and also needs to ensure the strong adhesion and sealing between the driver board and the encapsulation board, the barrier wall of display devices is currently generally prepared by a two-stage coating process using hard and soft adhesives. However, this manufacturing process involves many coating steps, resulting in a low yield rate and high production costs. Summary of the Invention

[0004] The main objective of this application is to provide a display device, a method for manufacturing the display device, and an electronic device. The display device can ensure the strong adhesion and sealing of the first substrate and the second substrate, while also reducing the coating process for preparing the barrier wall, improving the yield of the barrier wall and reducing production costs.

[0005] In a first aspect, this application provides a display device, the display device including a plurality of pixel units, the display device including a first substrate, a second substrate, a flow dielectric layer and a barrier adhesive layer; The first substrate includes a first electrode layer and a color film layer. The first electrode layer covers the color film layer, and the color film layer includes a color filter layer located in the pixel region and a color fill layer located in the barrier region. The pixel region is the region corresponding to the pixel unit, and the barrier region is located on the periphery of the display region. The second substrate includes a second electrode layer disposed opposite to the first electrode layer; The flow medium layer is disposed between the first electrode layer and the second electrode layer; The retaining wall adhesive layer is located in the retaining wall area and is disposed between the color filler layer and the second electrode layer, for bonding the color filler layer and the second electrode layer, so that the color filler layer and the retaining wall adhesive layer form a barrier wall.

[0006] Secondly, this application provides a method for manufacturing a display device, the method comprising: Provide a first substrate and a second substrate; A color film layer is formed on the surface of the first substrate. The color film layer includes a color filter layer located in the pixel region and a color filler layer located in the barrier region. The pixel region is the region corresponding to the pixel unit, and the barrier region is located on the periphery of the display region. A first electrode layer is formed on the surface of the color film layer, and a second electrode layer is formed on the surface of the second substrate; A barrier adhesive is applied to the surface of the colored filler layer, and the first electrode layer and the second electrode layer are aligned and bonded together so that the barrier adhesive cures to form a barrier adhesive layer and then bonds it to the colored filler layer to form a barrier wall, thereby obtaining a display device.

[0007] Thirdly, this application provides an electronic device, which includes a display device as described in any embodiment of this application, or a display device prepared by a manufacturing method of a display device as described in any embodiment of this application.

[0008] This application provides a display device, a method for manufacturing the display device, and an electronic device. The display device includes a first substrate, a second substrate, a flow dielectric layer, and a barrier adhesive layer. The first substrate includes a first electrode layer and a color film layer. The first electrode layer covers the color film layer, and the color film layer includes a color filter layer located in a pixel region and a color filler layer located in a barrier region. The pixel region is the region corresponding to a pixel unit, and the barrier region is located around the display region. The second substrate includes a second electrode layer disposed opposite to the first electrode layer. The flow dielectric layer is disposed between the first electrode layer and the second electrode layer. The barrier adhesive layer is located in the barrier region and is disposed between the color filler layer and the second electrode layer, for bonding the color filler layer and the second electrode layer, so that the color filler layer and the barrier adhesive layer form a barrier wall. The display device provided in this application not only has a color filter layer in the pixel area, but also a color filler layer in the barrier area. Since the color filler layer already has a certain film thickness, the barrier adhesive can be directly applied to the color filler layer. After the barrier adhesive cures to form a barrier adhesive layer, it is bonded to the color filler layer to form a barrier wall. This not only ensures reliable adhesion between the first substrate and the second substrate, but also reduces the coating process and the amount of barrier adhesive used in the preparation of the barrier wall, improves the preparation yield of the barrier wall, and reduces production costs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1A top view schematic diagram of a display device provided for related technologies; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point Aa; Figure 3 This is a top view of a display device provided in an embodiment of this application; Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at point Bb; Figure 5 This is a bottom view of a display device provided in an embodiment of this application; Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure at point Cc; Figure 7 This application provides a schematic flowchart of a method for manufacturing a display device according to an embodiment of the present application. Figure 8 A schematic block diagram of the structure of an electronic device provided in this application embodiment; Figure label: 100. Display device; 10. First substrate; 11. First electrode layer; 12. Color film layer; 13. Color filter layer; 131. First filter layer; 132. Second filter layer; 133. Third filter layer; 14. Color filler layer; 141. First filler layer; 142. Second filler layer; 143. Third filler layer; 20. Second substrate; 21. Second electrode layer; 30. Flow medium layer; 40. Retaining wall adhesive layer; 50. Black matrix fill layer; 1000. Electronic devices. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0012] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0013] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0014] It should be understood that, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first callback function and the second callback function are only used to distinguish different callback functions and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" do not necessarily mean they must be different.

[0015] It should also be understood that the term "and / or" as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0016] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0017] In related technologies, most display devices require a barrier wall between the top and bottom substrates for support, and the cavity formed by the barrier wall stores the electronic paste. The barrier wall needs to have a certain degree of hardness to ensure its compressive strength, and also needs to have a certain degree of viscosity to ensure the strong adhesion and sealing between the top and bottom substrates.

[0018] Please see Figure 1 and Figure 2 , Figure 1 A top view schematic diagram of a display device provided for related technologies. Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point Aa.

[0019] like Figure 1 and Figure 2As shown, current display device backstops are generally made using a two-stage coating process: A-adhesive and B-adhesive. After the RGB color adhesive is applied to the top substrate side of the backstop, a gap is left at the RGB color adhesive area to create the backstop. First, A-adhesive is applied to the top substrate, and then B-adhesive is applied on top of A-adhesive. A-adhesive is a rigid material, and the A-adhesive layer ensures support after bonding. The B-adhesive layer is a soft adhesive, and the B-adhesive layer has a certain viscosity, ensuring a strong bond and seal between the top and bottom substrates. However, this manufacturing process involves multiple coating steps, resulting in a low yield rate and high production costs for the backstop.

[0020] To address the aforementioned issues, this application provides a display device that includes a color filter layer in the pixel area and a color filler layer in the barrier area. Since the color filler layer already has a certain film thickness, the barrier adhesive can be directly applied to the color filler layer. After the barrier adhesive cures to form a barrier adhesive layer, it bonds with the color filler layer to form a barrier wall. This not only ensures reliable adhesion between the first substrate and the second substrate but also reduces the coating process and the amount of barrier adhesive used in preparing the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0021] For example, the display device provided in this application can be a liquid crystal display (LCD), a micro electric-chamber display (MED), or other display devices. Any display device that requires support by a barrier wall and uses the cavity formed by the barrier wall to store electronic paste can be the display device provided in this application, and no specific limitation is made here.

[0022] The following description uses a microcavity electronic paper display as an example to introduce the display device, manufacturing method of the display device, and electronic device provided in this application.

[0023] Electronic paper (ePaper) is a novel reflective display technology. Its core technology uses electronic ink to display images and text, achieving a display effect close to traditional paper. It boasts unique advantages such as paper-like display, low power consumption, and eye-friendliness. Major applications of ePaper include e-book readers, electronic tags, educational equipment, smart wearable devices, IoT displays, and advertising and information displays. With continuous technological advancements, the application scenarios of ePaper are expected to expand further, making it one of the important future development directions for display technology.

[0024] Microcavity electronic paper displays (MEDs) primarily involve creating a dam structure on the surface of thin-film transistors (TFTs) to surround each pixel unit. An electronic paste containing black and white particles for imaging is then used to fill the fluid dielectric layer, and finally, the display is encapsulated with a top glass panel. The cavity formed by the multiple dam structures in the MED is thus called the microcavity structure. MEDs can control the color changes of the particles in the electronic paste using an electric field, achieving high contrast, high reflectivity, and a wide color gamut display effect through particle reflection.

[0025] Please see Figure 3 and Figure 4 , Figure 3 This is a top view of a display device provided in an embodiment of this application. Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at point Bb.

[0026] like Figure 3 and Figure 4 As shown, the display device 100 is composed of multiple pixel units. The display device 100 also includes a first substrate 10, a second substrate 20, a flow dielectric layer 30, and a barrier adhesive layer 40. The first substrate 10 includes a first electrode layer 11 and a color film layer 12. The first electrode layer 11 covers the color film layer 12, and the color film layer 12 includes a color filter layer 13 located in the pixel region and a color filler layer 14 located in the barrier region. The pixel region is the region corresponding to the pixel unit, and the barrier region is located on the periphery of the display region. The second substrate 20 includes a second electrode layer 21 disposed opposite to the first electrode layer 11.

[0027] For example, the outermost layer of the first substrate 10 and the second substrate 20 may be a carrier such as glass or other acrylic material, used as a protective cover.

[0028] like Figure 3 and Figure 4 As shown, exemplarily, the side of the first substrate 10 facing away from the second substrate 20 can form the display surface of the display device 100. When the display device 100 is in a flat position, the first substrate 10 is generally disposed on the top of the display device 100, therefore the first substrate 10 can be referred to as the top substrate. The second substrate 20 is generally disposed on the bottom of the display device 100, and the second substrate 20 can be referred to as the bottom substrate. The second substrate 20 includes a second electrode layer 21 disposed opposite to the first electrode layer 11. The first electrode layer 11 is used to form an electric field together with the second electrode layer 21 during the display imaging process.

[0029] like Figure 5 and Figure 6As shown, for example, the first substrate 10 is an array substrate, and the side of the first substrate 10 facing away from the pixel electrode can also form the display surface of the display device 100. In the embodiments of this application, when the display device 100 is in a flat position, the first substrate 10 is disposed at the bottom of the display device 100, the second substrate 20 is disposed at the top of the display device 100, and the color film layer 12 is also disposed on the first substrate 10 located at the bottom of the display device 100.

[0030] It should be noted that the color film layer 12 can be disposed on the first substrate 10 located at the top of the display device 100 or on the first substrate 10 located at the bottom of the display device 100, and can be specifically disposed according to the display surface of the display device 100, without being specifically limited here. Moreover, since the color film layer 12 is disposed on the first substrate 10, the display device 100 can achieve color display regardless of whether the first substrate 10 is located at the top or bottom of the display device 100.

[0031] When the display device 100 is a microcavity electronic paper display, the second substrate 20 can also be referred to as an array substrate, the second electrode layer 21 can include multiple pixel units, and the second electrode layer 21 can also be referred to as a pixel electrode.

[0032] For example, the array substrate can be a driving plate for driving the movement of conductive particles within the flow dielectric layer 30. The first substrate 10 and the second substrate 20 can be correspondingly arranged in a first direction, which can be a vertical direction, i.e., the thickness direction of the display device 100.

[0033] like Figure 3 and Figure 4 As shown, specifically, the color film layer 12 can be disposed on the surface of the first substrate 10, and the first electrode layer 11 covers the color film layer 12. The color film layer 12 includes a color filter layer 13 located in the pixel region and a color filler layer 14 located in the barrier region.

[0034] Here, the pixel region is the region corresponding to the pixel unit, that is, the projection area of ​​the pixel unit in the thickness direction of the display device 100. The barrier region is located around the display region, that is, the projection area of ​​the barrier wall in the thickness direction of the display device 100. It can be understood that since the barrier wall is located around the pixel unit and surrounds the pixel unit, the barrier region is located around the pixel region.

[0035] The first electrode layer 11 is disposed opposite to the second substrate 20. The second substrate 20 includes a second electrode layer 21 disposed opposite to the first electrode layer 11, and the second electrode layer 21 is disposed on the surface of the second substrate 20. Both the first electrode layer 11 and the second electrode layer 21 are located in the pixel region and the barrier region.

[0036] For example, the color filter layer 13 can be a red filter layer, a green filter layer, or a blue filter layer, and the color filter layer 13 is disposed in the pixel area.

[0037] For example, the colored filler layer 14 can also be a red filler layer, a green filler layer, or a blue filler layer, and the colored filler layer 14 is disposed in the barrier area to fill the barrier area and replace the rigid adhesive in the related technology. After the barrier adhesive (soft adhesive) cures to form the barrier adhesive layer 40, it is bonded to the colored filler layer 14 (rigid adhesive) to form the barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall, and eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of barrier wall preparation and reducing production costs.

[0038] Specifically, the flow medium layer 30 is disposed between the first electrode layer 11 and the second electrode layer 21 and is located in the pixel region. For example, the flow medium layer 30 may include liquid crystal or conductive particles, which may be determined by the type of display device 100.

[0039] For example, when the display device 100 is a liquid crystal display, the flow medium layer 30 includes liquid crystal, which is a special substance between liquid and crystalline states, mainly used to control light refraction and display images. In this case, the flow medium layer 30 mainly changes the molecular arrangement state by stimulating current, thereby controlling the transmission or reflection of light to form an image display effect. When current passes through, the liquid crystal molecules rearrange themselves, causing light to be refracted or deflected, ultimately presenting images of different gray levels.

[0040] For example, in the case where the display device 100 is a microcavity electronic paper display, the flow medium layer 30 includes a filling liquid and conductive particles, and the conductive particles may include black particles and white particles with different electrical properties.

[0041] Specifically, the flow medium layer 30 is disposed between the top substrate and the array substrate, and the flow medium layer 30 forms a closed cavity containing a filling liquid and conductive particles distributed in the filling liquid.

[0042] For example, black and white particles can have different electrical charges. For instance, white particles may carry a negative charge and black particles may carry a positive charge; or white particles may carry a positive charge and black particles may carry a negative charge. No specific limitation is made here.

[0043] Black and white particles can undergo electrophoresis under the influence of voltage, controlling their positional distribution within the fluid dielectric layer 30 and thus creating different grayscale levels on the screen surface. Utilizing the principle of attraction between positive and negative particles, when an electric field is applied, corresponding black or white particles move to the top of the fluid dielectric layer 30, allowing the user to see black or white within that area (pixel unit). Applying different voltages to the same fluid dielectric layer 30 will result in a half-black, half-white appearance at the top, allowing the user to see gray within that area (pixel unit).

[0044] Specifically, the first electrode layer 11 and the second electrode layer 21 jointly drive the black and white particles in the flow medium layer 30 to arrange themselves to achieve the display and switching of different images. Since the color filter layer 13 is located in the pixel area, when the reflected light from the particles at the top of the flow medium layer 30 passes through the light-transmitting area, the reflected light also passes through the color filter layer 13 in the pixel area at the same time. Therefore, by adjusting the transmittance of the color filter layer 13, the display device 100 can display the corresponding color, thereby achieving color display of the display device 100 and improving the color vividness and image clarity of the display device 100.

[0045] Specifically, the retaining wall adhesive layer 40 is located in the retaining wall area and is disposed between the color filler layer 14 and the second electrode layer 21 to bond the color filler layer 14 and the second electrode layer 21 so that the color filler layer 14 and the retaining wall adhesive layer 40 form a retaining wall.

[0046] The retaining wall adhesive layer 40 can be obtained by curing retaining wall adhesive (soft adhesive). The retaining wall adhesive has a certain viscosity to ensure the adhesion and sealing between the top substrate and the bottom substrate.

[0047] For example, the retaining wall adhesive layer 40 is located in the retaining wall area and is disposed between the color filler layer 14 and the second electrode layer 21, for bonding the color filler layer 14 and the second electrode layer 21, thereby achieving reliable bonding between the color filler layer 14 and the second electrode layer 21, so that the color filler layer 14 and the cured retaining wall adhesive layer 40 form a retaining wall.

[0048] For example, since the materials of the color filter layer 13 and the color filler layer 14 are resin materials, the resin materials are cured into a solid state after being baked at high temperature, and the hardness can reach 3H. Therefore, the color filler layer 14 located in the barrier area can replace the rigid adhesive in the related technology, so that the barrier adhesive (soft adhesive) is cured to form the barrier adhesive layer 40 and then bonded to the color filler layer 14 (rigid adhesive) to form the barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall, and eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0049] In some embodiments, the color fill layer 14 includes a first fill layer 141, a second fill layer 142, and a third fill layer 143, which are stacked together.

[0050] The first filling layer 141, the second filling layer 142, and the third filling layer 143 can be any one of red, green, and blue filling layers, and the colors of the first filling layer 141, the second filling layer 142, and the third filling layer 143 are different.

[0051] As one optional implementation, the first filling layer 141 can be a red filling layer, the second filling layer 142 can be a green filling layer, and the third filling layer 143 can be a blue filling layer; as another optional implementation, the first filling layer 141 can be a green filling layer, the second filling layer 142 can be a blue filling layer, and the third filling layer 143 can be a red filling layer; as yet another optional implementation, the first filling layer 141 can be a blue filling layer, the second filling layer 142 can be a red filling layer, and the third filling layer 143 can be a green filling layer, and no specific limitations are imposed here.

[0052] For example, the first filler layer 141, the second filler layer 142, and the third filler layer 143 are all located in the barrier wall area, and the first filler layer 141, the second filler layer 142, and the third filler layer 143 are stacked sequentially. Since the first filler layer 141, the second filler layer 142, and the third filler layer 143 are stacked, the colored filler layer 14 formed by the first filler layer 141, the second filler layer 142, and the third filler layer 143 can have a certain thickness, thereby replacing the rigid adhesive in the related technology. After the barrier wall adhesive (soft adhesive) cures to form the barrier wall adhesive layer 40, it is bonded to the colored filler layer 14 (rigid adhesive) to form the barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall, and eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0053] It should be noted that the length and width of the color fill layer 14 are the same as those of the barrier area, that is, in the thickness direction of the display device 100, the projection of the color fill layer 14 coincides with the projection of the barrier area.

[0054] In some embodiments, the sum of the thicknesses of the first filling layer 141, the second filling layer 142, and the third filling layer 143 is 3µm-10µm.

[0055] In order to meet the thickness requirements of the display device 100, the sum of the thicknesses of the first filling layer 141, the second filling layer 142 and the third filling layer 143 is 3um-10um, such as 3um, 5um, 6um, 8um, 10um, etc.

[0056] Taking a total barrier wall thickness of 11µm as an example, the thickness of the barrier wall adhesive layer 40 is generally set to 5µm. Therefore, the sum of the thicknesses of the first filler layer 141, the second filler layer 142, and the third filler layer 143 needs to be set to 6µm. For example, the thicknesses of the first filler layer 141, the second filler layer 142, and the third filler layer 143 can each be 2µm. If the total thickness of the barrier wall needs to be set larger, the thicknesses of the first filler layer 141, the second filler layer 142, and the third filler layer 143 can be increased accordingly.

[0057] It should be noted that the thicknesses of the first filling layer 141, the second filling layer 142, and the third filling layer 143 can be the same or different, as long as the sum of the thicknesses of the first filling layer 141, the second filling layer 142, and the third filling layer 143 is 3um-10um, and no specific limitation is made here.

[0058] In some embodiments, the display device 100 further includes a black matrix filling layer 50, which is disposed on the side of the color filling layer 14 opposite to the first electrode layer 11.

[0059] Specifically, by placing the black matrix filling layer 50 on the side of the color filling layer 14 away from the first electrode layer 11, not only can the black and white contrast of the display device 100 be improved, but the influence of the color filling layer 14 on the color chromaticity can also be reduced.

[0060] Moreover, in this embodiment, the black matrix filling layer 50 is located in the barrier area, and since the black matrix filling layer 50 also has a certain hardness, the colored filling layer 14 and the black matrix filling layer 50 located in the barrier area can replace the rigid adhesive in the related technology. After the barrier adhesive cures to form the barrier adhesive layer 40, it is bonded to the colored filling layer 14 and the black matrix filling layer 50 to form the barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall. Furthermore, it eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0061] In some embodiments, the sum of the thicknesses of the black matrix filling layer 50, the first filling layer 141, the second filling layer 142, and the third filling layer 143 is 3µm-10µm.

[0062] In order to meet the thickness requirements of the display device 100, the sum of the thicknesses of the black matrix filling layer 50, the first filling layer 141, the second filling layer 142 and the third filling layer 143 is 3um-10um, such as 3um, 5um, 6um, 8um, 10um, etc.

[0063] Taking a total barrier wall thickness of 11µm as an example, the thickness of the barrier wall adhesive layer 40 is generally set to 5µm. Therefore, the sum of the thicknesses of the black matrix filler layer 50, the first filler layer 141, the second filler layer 142, and the third filler layer 143 needs to be set to 6µm. For example, each of the black matrix filler layer 50, the first filler layer 141, the second filler layer 142, and the third filler layer 143 can be 1.5µm. If the total thickness of the barrier wall needs to be set larger, the thicknesses of the black matrix filler layer 50, the first filler layer 141, the second filler layer 142, and the third filler layer 143 can be increased accordingly.

[0064] It should be noted that the thicknesses of the black matrix filling layer 50, the first filling layer 141, the second filling layer 142, and the third filling layer 143 can be the same or different, as long as the sum of the thicknesses of the black matrix filling layer 50, the first filling layer 141, the second filling layer 142, and the third filling layer 143 is 3um-10um, and no specific limitation is made here.

[0065] In some embodiments, the color filter layer 13 includes a first filter layer 131, a second filter layer 132, and a third filter layer 133; wherein the thickness of the first filter layer 131 is the same as the thickness of the first filler layer 141, the thickness of the second filter layer 132 is the same as the thickness of the second filler layer 142, and the thickness of the third filter layer 133 is the same as the thickness of the third filler layer 143.

[0066] Since the first filter layer 131 and the first filler layer 141 are prepared simultaneously using the same fabrication process, the first filter layer 131 and the first filler layer 141 have the same thickness; since the second filter layer 132 and the second filler layer 142 are prepared simultaneously using the same fabrication process, the second filter layer 132 and the second filler layer 142 have the same thickness; since the third filter layer 133 and the third filler layer 143 are prepared simultaneously using the same fabrication process, the third filter layer 133 and the third filler layer 143 have the same thickness.

[0067] For example, the first filter layer 131, the second filter layer 132 and the third filter layer 133 are located in different pixel regions, and each pixel unit is provided with any one of the first filter layer 131, the second filter layer 132 and the third filter layer 133.

[0068] like Figure 4 As shown, Figure 4 The diagram shows three pixel units, which are the first pixel unit, the second pixel unit, and the third pixel unit from left to right. When the first filter layer 131 is prepared in the first pixel unit, the first filling layer 141 can be prepared simultaneously on the first substrate 10 located in the barrier region. Then, when the second filter layer 132 is prepared in the second pixel unit, the second filling layer 142 can be prepared simultaneously on the first substrate 10 located in the barrier region. Finally, when the third filter layer 133 is prepared in the third pixel unit, the third filling layer 143 can be prepared simultaneously on the first substrate 10 located in the barrier region. At this time, the first filling layer 141, the second filling layer 142, and the third filling layer 143 are stacked.

[0069] Since the color filter layer 13 in the pixel area can be prepared simultaneously with the color filler layer 14 in the barrier area, the first filler layer 141, the second filler layer 142 and the third filler layer 143 in the barrier area are stacked. This not only does not increase the manufacturing cost of the color film layer 12, but also allows the color filler layer 14 formed by the first filler layer 141, the second filler layer 142 and the third filler layer 143 to have a certain thickness. This can replace the rigid adhesive in the related technology. After the barrier adhesive (soft adhesive) cures to form the barrier adhesive layer 40, it is bonded to the color filler layer 14 (rigid adhesive) to form the barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall. Furthermore, it eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0070] It should be noted that the thicknesses of the first filter layer 131, the second filter layer 132, and the third filter layer 133 can be the same or different, and no specific limitation is made here. The thicknesses of the first filter layer 131, the second filter layer 132, and the third filter layer 133 are mainly determined by factors such as the color gamut and brightness of their corresponding pixel units.

[0071] In some embodiments, the projection of the color filler layer 14 in the thickness direction of the display device 100 coincides with the projection of the barrier adhesive layer 40 in the thickness direction of the display device 100.

[0072] Specifically, by controlling the projection of the colored filler layer 14 to coincide with the projection of the retaining wall adhesive layer 40, the colored filler layer 14 and the retaining wall adhesive layer 40 located in the retaining wall area can be accurately bonded, thereby achieving reliable adhesion between the colored filler layer 14 and the retaining wall adhesive layer 40.

[0073] In some embodiments, the viscosity of the retaining wall adhesive layer 40 is greater than the viscosity of the colored filler layer 14.

[0074] For example, to ensure the adhesion and sealing between the top and bottom substrates, the retaining wall adhesive needs to have a certain viscosity. Therefore, a soft adhesive is used, and the retaining wall adhesive layer 40 is obtained through curing. Since the colored filler layer 14 located in the retaining wall area replaces the hard adhesive in related technologies, the retaining wall adhesive layer 40, after curing, bonds with the colored filler layer 14 to form the retaining wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the retaining wall, and eliminates the need for hard adhesive, thus improving the yield of the retaining wall and reducing production costs. Therefore, the viscosity of the retaining wall adhesive layer 40 is greater than the viscosity of the colored filler layer 14.

[0075] Please see Figure 7 This application also proposes a method for manufacturing a display device, such as... Figure 7 As shown, the manufacturing method of the display device may include steps S101 to S104.

[0076] S101, Provide a first substrate and a second substrate.

[0077] The material of the first substrate 10 can be glass, or it can be acrylic sheet, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polyimide film, etc., without specific limitations.

[0078] For example, if the display device 100 is a microcavity electronic paper display, the second substrate 2020 can be an array substrate, which can have multiple pixel units formed thereon. It should be understood that the multiple pixel units can be arranged at intervals to form an array, or they can be arranged closely together to form an array. Those skilled in the art can design according to actual needs, and no specific limitations are made here.

[0079] S102. A color film layer is formed on the surface of the first substrate. The color film layer includes a color filter layer located in the pixel area and a color filler layer located in the barrier area. The pixel area is the area corresponding to the pixel unit, and the barrier area is located on the periphery of the display area.

[0080] Specifically, a color filter layer 13 can be formed in the pixel area while a color filler layer 14 is formed in the barrier area, thereby forming a color film layer 12 on the surface of the first substrate 10.

[0081] like Figure 4 As shown, Figure 4 The diagram shows three pixel units, which are the first pixel unit, the second pixel unit, and the third pixel unit from left to right. When the first filter layer 131 is prepared in the first pixel unit, the first filling layer 141 can be prepared simultaneously on the first substrate 10 located in the barrier region. Then, when the second filter layer 132 is prepared in the second pixel unit, the second filling layer 142 can be prepared simultaneously on the first substrate 10 located in the barrier region. Finally, when the third filter layer 133 is prepared in the third pixel unit, the third filling layer 143 can be prepared simultaneously on the first substrate 10 located in the barrier region. At this time, the first filling layer 141, the second filling layer 142, and the third filling layer 143 are stacked.

[0082] Since the color filter layer 13 in the pixel area can be prepared simultaneously with the color filler layer 14 in the barrier area, the first filler layer 141, the second filler layer 142 and the third filler layer 143 in the barrier area are stacked. This not only does not increase the manufacturing cost of the color film layer 12, but also allows the color filler layer 14 formed by the first filler layer 141, the second filler layer 142 and the third filler layer 143 to have a certain thickness. This can replace the rigid adhesive in the related technology. After the barrier adhesive (soft adhesive) cures to form the barrier adhesive layer 40, it is bonded to the color filler layer 14 (rigid adhesive) to form the barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall. Furthermore, it eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0083] Since the first filter layer 131 and the first filler layer 141 are prepared simultaneously using the same fabrication process, the first filter layer 131 and the first filler layer 141 have the same thickness; since the second filter layer 132 and the second filler layer 142 are prepared simultaneously using the same fabrication process, the second filter layer 132 and the second filler layer 142 have the same thickness; since the third filter layer 133 and the third filler layer 143 are prepared simultaneously using the same fabrication process, the third filter layer 133 and the third filler layer 143 have the same thickness.

[0084] For example, the first filter layer 131, the second filter layer 132 and the third filter layer 133 are located in different pixel regions, and each pixel unit is provided with any one of the first filter layer 131, the second filter layer 132 and the third filter layer 133.

[0085] It should be noted that the thicknesses of the first filter layer 131, the second filter layer 132, and the third filter layer 133 can be the same or different, and no specific limitation is made here. The thicknesses of the first filter layer 131, the second filter layer 132, and the third filter layer 133 are mainly determined by factors such as the color gamut and brightness of their corresponding pixel units.

[0086] S103. A first electrode layer is formed on the surface of the color film layer, and a second electrode layer is formed on the surface of the second substrate.

[0087] Specifically, a first electrode layer 11 can be formed on the surface of the color film layer 12, and a second electrode layer 21 can be formed on the surface of the second substrate 20.

[0088] For example, a sputtering deposition process can be used to form a metal thin film on the surface of the color film layer 12, which is the first electrode layer 11, and the metal thin film covers the color film layer 12. Similarly, a sputtering deposition process can also be used to form a metal thin film on the surface of the second substrate 20, which is the second electrode layer 21, and the metal thin film covers the second substrate 20.

[0089] S104. Apply the barrier adhesive to the surface of the colored filler layer, and align and attach the first electrode layer and the second electrode layer so that the barrier adhesive cures to form a barrier adhesive layer and then bonds it to the colored filler layer to form a barrier wall, thereby obtaining the display device.

[0090] For example, the barrier adhesive can be applied to the surface of the colored filler layer 14, or it can be applied to the second electrode layer 21 located in the barrier area, or the barrier adhesive can be applied to both the surface of the colored filler layer 14 and the second electrode layer 21 located in the barrier area.

[0091] Specifically, the first electrode layer 11 and the second electrode layer 21 can be aligned and bonded together, so that the barrier adhesive layer 40 formed by the curing of the barrier adhesive abuts against the colored filler layer 14, thereby forming a barrier wall. This not only ensures reliable adhesion between the first substrate 10 and the second substrate 20, but also reduces the coating process for preparing the barrier wall, and eliminates the need to use rigid adhesive to prepare the barrier wall, thereby improving the yield of the barrier wall and reducing production costs.

[0092] It should be noted that the relevant embodiments of the first substrate 10, the second substrate 20, the flow medium layer 30 and the barrier adhesive layer 40 can be referred to the above embodiments, and will not be repeated here.

[0093] like Figure 8As shown in the embodiments, this application also proposes an electronic device 1000, which includes a display device 100 as described in any embodiment of this application. The electronic device 1000 uses less adhesive for its barrier wall. Due to the fewer coating steps and lower manufacturing costs, the manufacturing cost of the electronic device 1000 is also relatively low, while the product yield is high.

[0094] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0095] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0096] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A display device, characterized in that, The display device includes a plurality of pixel units, and the display device includes: A first substrate, comprising a first electrode layer and a color film layer, wherein the first electrode layer covers the color film layer, and the color film layer comprises a color filter layer located in a pixel region and a color fill layer located in a barrier region, wherein the pixel region is the region corresponding to the pixel unit, and the barrier region is located on the periphery of the display region; The second substrate includes a second electrode layer disposed opposite to the first electrode layer; A flow medium layer is disposed between the first electrode layer and the second electrode layer; A retaining wall adhesive layer is located in the retaining wall area and is disposed between the color filler layer and the second electrode layer for bonding the color filler layer and the second electrode layer so that the color filler layer and the retaining wall adhesive layer form a barrier wall.

2. The display device according to claim 1, characterized in that, The color fill layer includes a first fill layer, a second fill layer, and a third fill layer, which are stacked together.

3. The display device according to claim 2, characterized in that, The sum of the thicknesses of the first filling layer, the second filling layer, and the third filling layer is 3µm-10µm.

4. The display device according to claim 1, characterized in that, The display device further includes a black matrix filling layer, which is disposed on the side of the color filling layer opposite to the first electrode layer.

5. The display device according to claim 4, characterized in that, The sum of the thicknesses of the black matrix filling layer, the first filling layer, the second filling layer, and the third filling layer is 3µm-10µm.

6. The display device according to claim 1, characterized in that, The color filter layer includes a first filter layer, a second filter layer, and a third filter layer; Wherein, the thickness of the first filter layer is the same as the thickness of the first filler layer, the thickness of the second filter layer is the same as the thickness of the second filler layer, and the thickness of the third filter layer is the same as the thickness of the third filler layer.

7. The display device according to claim 1, characterized in that, The projection of the colored filler layer in the thickness direction of the display device coincides with the projection of the retaining adhesive layer in the thickness direction of the display device.

8. The display device according to any one of claims 1-7, characterized in that, The viscosity of the retaining wall adhesive layer is greater than the viscosity of the colored filler layer.

9. A method for manufacturing a display device, characterized in that, The display device includes a plurality of pixel units, and the method includes: Provide a first substrate and a second substrate; A color film layer is formed on the surface of the first substrate. The color film layer includes a color filter layer located in the pixel region and a color filler layer located in the barrier region. The pixel region is the region corresponding to the pixel unit, and the barrier region is located on the periphery of the display region. A first electrode layer is formed on the surface of the color film layer, and a second electrode layer is formed on the surface of the second substrate; A barrier adhesive is applied to the surface of the colored filler layer, and the first electrode layer and the second electrode layer are aligned and bonded together so that the barrier adhesive cures to form a barrier adhesive layer and then bonds it to the colored filler layer to form a barrier wall, thereby obtaining a display device.

10. An electronic device, characterized in that, The electronic device includes the display device according to any one of claims 1-7, or includes a display device prepared by the manufacturing method of the display device according to claim 8 or 9.

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