Display device and electronic apparatus

Abstract

The invention provides a display device and electronic equipment, and relates to the technical field of display, and the display device comprises a top substrate, an array substrate, a supporting structure and a flowing medium layer; the array substrate comprises a substrate plate and a plurality of pixel units arranged on the substrate plate, each pixel unit comprises a pixel electrode layer and a thin film transistor, each thin film transistor comprises a gate layer, a semiconductor layer and a source and drain electrode layer, and each pixel electrode layer is connected with a drain electrode of the corresponding source and drain electrode layer through a via hole; the supporting structure is arranged between the common electrode layer and the pixel electrode layer in the top substrate, the supporting structure comprises first retaining walls and second retaining walls, the multiple first retaining walls intersect to form a cavity, the second retaining walls are arranged in the cavity, and the projection of the second retaining walls on the substrate plate covers the projection of the via holes on the substrate plate; a plurality of closed areas are formed between the second retaining wall and the cavity; the flowing medium layer comprises electrophoretic particles and electrophoretic liquid which are arranged in the closed area. The display effect can be effectively improved.

Description

Technical Field

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

[0002] In display devices, the array substrate needs to achieve conductivity between the top pixel electrode layer and the drain in the source-drain layer. Therefore, vias need to be etched in the insulating layer and protective layer between the two layers. Due to the limitations of the protective layer material, the size of the vias is relatively large. When the electronic paste is poured in during encapsulation, the vias form a "bowl"-shaped pit due to their structural characteristics. The electronic paste settles in the pit, simultaneously forming a corresponding "bowl"-shaped depression.

[0003] Furthermore, when the display device is powered on, the black and white particles in the electronic paste between the array substrate and the top substrate will flip with the change of input voltage. However, since the height of the electronic paste at the via is lower than that of other areas, a color difference will be formed at this location. When observed by the human eye, it appears as a white "skipped hole white spot", which ultimately affects the display effect of the screen.

[0004] Therefore, how to design a display device that can improve the display effect has become an urgent technical problem to be solved. Summary of the Invention

[0005] The main objective of this application is to provide a display device and electronic device that can effectively improve the display effect.

[0006] In a first aspect, this application provides a display device, comprising: a top substrate, an array substrate, a support structure, and a flow dielectric layer; the top substrate includes a common electrode layer; the array substrate is disposed opposite to the top substrate, the array substrate includes a substrate plate and a plurality of pixel units disposed on the substrate plate, the pixel unit includes a pixel electrode layer and a thin film transistor, the thin film transistor is located between the pixel electrode layer and the substrate plate, the thin film transistor includes a gate layer, a semiconductor layer, and a source-drain layer, in the thickness direction of the array substrate, the gate layer and the source-drain layer are disposed opposite to the semiconductor layer, and the pixel electrode layer is connected to the drain of the source-drain layer through a via; The support structure is disposed between the common electrode layer and the pixel electrode layer. The support structure includes multiple first baffles and second baffles. The multiple first baffles intersect to form a cavity. The cavity is located in the pixel region, which is the projection area of ​​the pixel unit in the thickness direction of the display device. The second baffle is disposed in the cavity. The projection of the second baffle on the substrate covers the projection of the via on the substrate, and multiple closed regions are formed between the second baffle and the cavity. The flow medium layer is located in the cavity. The flow medium layer includes electrophoretic particles and electrophoretic liquid disposed in the closed regions.

[0007] In some embodiments, a second baffle wall is provided inside the cavity, and two enclosed areas are formed between the second baffle wall and the cavity.

[0008] In some embodiments, the second barrier includes a first barrier portion and a first filling portion, the first barrier portion forming two closed regions between the cavity and the cavity, and the first filling portion covering the pixel electrode layer located in the via.

[0009] In some embodiments, two second baffles are provided in the cavity, the two second baffles are cross-connected, and four closed areas are formed between the second baffles and the cavity.

[0010] In some embodiments, the opening of the through hole is located in a corner region, which is the projection area of ​​the corner formed by the intersection of two second retaining walls in the thickness direction of the display device.

[0011] In some embodiments, the top substrate further includes a top plate and a color filter layer located in the pixel region, the color filter layer being located between the top plate and the common electrode layer.

[0012] In some embodiments, the color filter layer includes a plurality of color sub-filter layers and a first cutout region, wherein the projection of the color sub-filter layer on the substrate overlaps with the projection of the closed region on the substrate, the first cutout region is located between any two adjacent color sub-filter layers, and the projection of the first cutout region on the substrate covers the projection of the side of the second barrier away from the pixel electrode layer on the substrate.

[0013] In some embodiments, the gate layer includes a gate trace, a first gate, and a second gate, both of which are connected to the gate trace. The semiconductor layer includes a first semiconductor layer and a second semiconductor layer, wherein the first gate and the source / drain layer are disposed opposite to the first semiconductor layer, and the second gate and the source / drain layer are disposed opposite to the second semiconductor layer.

[0014] In some embodiments, the thin-film transistor further includes an isolation layer, and the via is located in the isolation layer.

[0015] Secondly, this application provides an electronic device that includes a display device as described in any embodiment of the first aspect of this application.

[0016] According to the display device and electronic device provided in this application, firstly, the support structure includes a first baffle and a second baffle. Compared with the support structure in the related art that consists only of the first baffle, the support effect of the support structure can be further improved, preventing the array substrate and the top substrate from crushing the flow dielectric layer during the bonding process, thus improving the production yield and the reliability of the product. Secondly, the projection of the via on the substrate is covered by the projection of the second baffle on the substrate, so that the opening of the via is completely covered by the second baffle. Electrophoretic particles and electrophoretic liquid in the closed area cannot enter the via, so that the height of electrophoretic particles and electrophoretic liquid in any closed area is the same, and no color difference is formed, effectively avoiding the occurrence of white spots, thereby significantly improving the uniformity of the display. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of a display device in related technologies; Figure 2 for Figure 1 A cross-sectional view formed after cutting along line A1-A2; Figure 3 This is a schematic diagram of the structure of a display device provided in an embodiment of this application; Figure 4 for Figure 3 A cross-sectional view formed after cutting along line B1-B2; Figure 5 This is a schematic diagram of the structure of another display device provided in an embodiment of this application; Figure 6 for Figure 5 A cross-sectional view formed after cutting along line C1-C2. Detailed Implementation

[0019] 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.

[0020] In a display device, the array substrate needs to achieve conductivity between the top pixel electrode layer and the drain in the source / drain layer. Therefore, vias need to be etched in the insulating and protective layers between the two layers, such as... Figure 1 As shown. Due to the limitations of the protective layer material, the aperture size of the via needs to be designed to be above 22μm, and the total depth of the via is 2.3μm. When the via is packaged and the electronic paste is poured in, the via's location forms a "bowl"-shaped depression due to its structural characteristics. The electronic paste settles in the depression, simultaneously forming a corresponding "bowl"-shaped recess A10, as shown. Figure 2 As shown.

[0021] Furthermore, when the display device is powered on, the black and white particles in the electronic paste between the array substrate and the top substrate will flip with the change of input voltage. However, since the height of the electronic paste at the via is lower than that of other areas, a color difference will be formed at this location. When observed by the human eye, it appears as a white "skipped hole white spot", which ultimately affects the display effect of the screen.

[0022] To address the aforementioned problems, this application provides a display device and an electronic device that can effectively improve display performance.

[0023] 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.

[0024] Please refer to Figure 3-6In a first aspect, an embodiment of this application provides a display device comprising: a top substrate, an array substrate, a support structure, and a flow dielectric layer 400; the top substrate includes a common electrode layer 110; the array substrate is disposed opposite to the top substrate, the array substrate including a substrate 210 and a plurality of pixel units disposed on the substrate 210, each pixel unit including a pixel electrode layer 220 and a thin-film transistor, the thin-film transistor being located between the pixel electrode layer 220 and the substrate 210, the thin-film transistor including a gate layer 230, a semiconductor layer, and a source / drain layer 250, the gate layer 230 and the source / drain layer 250 being disposed opposite to the semiconductor layer in the thickness direction of the array substrate, the pixel electrode layer 220 being disposed through a via 260. The drain 251 of the source-drain layer 250 is connected; a support structure is disposed between the common electrode layer 110 and the pixel electrode layer 220. The support structure includes multiple first baffles 310 and second baffles 320. The multiple first baffles 310 intersect to form a cavity. The cavity is located in the pixel region. The pixel region is the projection area of ​​the pixel unit in the thickness direction of the display device. The second baffles 320 are disposed in the cavity. The projection of the second baffles 320 on the substrate 210 covers the projection of the via 260 on the substrate 210. Multiple closed regions are formed between the second baffles 320 and the cavity; a flow medium layer 400 is located in the cavity. The flow medium layer 400 includes electrophoretic particles and electrophoretic liquid disposed in the closed regions.

[0025] For example, the display device is an electronic paper display device or a liquid crystal display device. Common electronic paper displays include microcavity electronic paper displays (MED) and electrophoretic electronic paper displays (EPD). This application does not impose too many limitations on the type of display device.

[0026] It should be noted that the array substrate serves as a driving board to drive the movement of electrophoretic particles located in the enclosed area. When the thin-film transistor in the pixel unit is turned on, the start-up voltage is applied from the thin-film transistor to the pixel electrode layer 220, forming an electric field with the common electrode layer 110 in the top substrate, thereby realizing the driven movement of electrophoretic particles.

[0027] For example, electrophoretic particles may include black particles and white particles with different charges. The black particles and white particles may have different charges, for example, white particles are negatively charged and black particles are positively charged; or white particles are positively charged and black particles are negatively charged. No specific limitation is made here.

[0028] Furthermore, utilizing the principle of attraction between positive and negative particles, when the electric field is applied, the corresponding black or white particles will move to the top of the closed area, thus allowing the user to see black or white within that pixel area. In addition, by applying different voltages, the top of the closed area will also appear half black and half white, allowing the user to also see gray within that pixel area.

[0029] Understandably, by setting up a support structure, on the one hand, it can provide additional mechanical structural strength to the flow dielectric layer 400, preventing the array substrate and the top substrate from crushing the flow dielectric layer 400 during the bonding process, thereby improving production yield and product reliability; on the other hand, it can provide a more stable and regular accommodating space for electrophoretic particles and electrophoretic liquid, improving the control accuracy and stability of the electric field, thereby improving the refresh efficiency and color gamut effect of the display device and preventing color mixing and miscoloring.

[0030] It should be noted that, referring to Figure 3 , Figure 4 The via 260 is located on the side of the second barrier 320 close to the pixel electrode layer 220, and the projection of the via 260 on the substrate 210 is covered by the projection of the second barrier 320 on the substrate 210. That is, the opening of the via 260 is completely covered by the second barrier 320, and the electrophoretic particles and electrophoretic liquid cannot enter the via 260. This makes the height of the electrophoretic particles and electrophoretic liquid in any closed area the same, and no color difference will be formed. This effectively avoids the occurrence of white spots, thereby significantly improving the uniformity of the display.

[0031] It is understandable that by setting a second baffle 320 in the cavity, on the one hand, the opening of the through hole 260 can be covered, thereby significantly improving the uniformity of the display; on the other hand, compared with the support structure composed only of the first baffle 310 in the related technology, the support structure in this application also includes a second baffle 320, which can further effectively improve the support effect of the support structure and improve the production yield.

[0032] In some embodiments, a second baffle 320 is provided inside the cavity, forming two enclosed areas between the second baffle 320 and the cavity.

[0033] For example, the second barrier 320 divides the cavity into two closed regions of equal size, or the second barrier 320 divides the cavity into two closed regions of unequal size. In this application, the structural size of the two closed regions is not limited in excessively.

[0034] It is understandable that if the second barrier 320 divides the cavity into two closed areas of equal size, it can ensure that the electrophoretic particles and electrophoretic liquid in the flow medium layer 400 are evenly distributed in each closed area, further improving the display effect.

[0035] Exemplarily, the cavity can be a quadrilateral cavity, a pentagonal cavity or other polygonal cavities. If the cavity is a quadrilateral cavity structure formed by the cross-connection of four first retaining walls 310, the structure formed by further combining the cavity with a second retaining wall 320 is in the shape of "曰". In the present application, the shape of the cavity is not overly limited.

[0036] In some embodiments, the second retaining wall 320 includes a first retaining wall portion and a first filling portion. Two closed regions are formed between the first retaining wall portion and the cavity, and the first filling portion covers the pixel electrode layer 220 located in the via hole 260.

[0037] It should be noted that in the region of the via hole 260, after the pixel electrode layer 220 is electrically connected to the drain electrode 251 by adhering to the inner wall of the via hole 260, a depression is formed on the side of the pixel electrode layer 220 close to the top substrate. The first filling portion is located at the depression and covers the pixel electrode layer 220 located in the via hole 260, so as to prevent some electrophoresis particles and electrophoresis liquid from entering the via hole 260 during the subsequent process of filling electrophoresis particles and electrophoresis liquid in the closed region.

[0038] Exemplarily, the first retaining wall portion is in the shape of a cube, and the first filling portion is in the shape of a frustum. The shape of the first filling portion can be appropriately adjusted according to the shape of the via hole 260. In the present application, the shapes of the first retaining wall portion and the first filling portion are not overly limited.

[0039] In some embodiments, referring to Figure 3 , two second retaining walls 320 are provided in the cavity. The two second retaining walls 320 are cross-connected, and four closed regions are formed between the second retaining walls 320 and the cavity.

[0040] Exemplarily, if the cavity is a quadrilateral cavity, the structure formed by the cavity and the two second retaining walls 320 is in the shape of "田", as Figure 3 shown.

[0041] Exemplarily, the two cross-connected second retaining walls 320 divide the cavity into four closed regions with equal or unequal structural sizes. In the present application, the structural sizes of the four closed regions are not overly limited.

[0042] It can be understood that if the two cross-connected second retaining walls 320 divide the cavity into four closed regions with equal structural sizes, it can ensure that the electrophoresis particles and electrophoresis liquid in the flow medium layer 400 are evenly distributed in each closed region, further improving the display effect.

[0043] In some embodiments, referring to Figure 3-6The opening of the through hole 260 is located in the corner area, which is the projection area of ​​the corner formed by the intersection of the two second retaining walls 320 in the thickness direction of the display device.

[0044] It should be noted that, compared to other areas on the two intersecting second retaining walls 320, the corner area has the largest area. By setting the opening of the through hole 260 in the corner area, it can be ensured that the opening of the through hole 260 is completely covered by the corner area. Electrophoretic particles and electrophoretic liquid cannot enter the through hole 260, so that the height of electrophoretic particles and electrophoretic liquid in any closed area is the same, and no color difference will be formed. This effectively avoids the occurrence of white spots, thereby significantly improving the uniformity of the display.

[0045] For example, two second retaining walls 320 are intersected to form a cross-shaped retaining wall structure. The cross-shaped retaining wall structure includes a second retaining wall portion 321 and a second filling portion 322, such as... Figure 4 As shown, four closed areas are formed between the second barrier portion 321 and the cavity, and the second filling portion 322 covers the pixel electrode layer 220 located in the through hole 260.

[0046] For example, the second barrier portion 321 is cuboid in shape, and the second filling portion 322 is frustum in shape. The shape of the second filling portion 322 can be appropriately adjusted according to the shape of the through hole 260. In this application, the shapes of the second barrier portion 321 and the second filling portion 322 are not limited too much.

[0047] In some embodiments, the opening of the through hole 260 is disposed in the edge region, which is the projection area of ​​the other areas besides the corner points of the two second retaining walls in the thickness direction of the display device.

[0048] In some embodiments, two second baffles 320 are provided in the cavity, the two second baffles 320 are parallel to each other, and the two second baffles 320 and the cavity form three closed areas.

[0049] For example, two parallel second baffles 320 divide the cavity into three closed regions of equal size; or, two parallel second baffles 320 divide the cavity into three closed regions of unequal size.

[0050] Understandably, if two parallel second baffles 320 divide the cavity into three enclosed regions of equal size, it can ensure that the electrophoretic particles and electrophoretic liquid in the flow medium layer 400 are evenly distributed in each enclosed region, further improving the display effect.

[0051] Exemplarily, if the cavity is a quadrilateral cavity, the structure formed by the cavity and the two second retaining walls 320 is in the shape of a Chinese character "mu" (目). The opening of the via hole 260 can be set on the side of any one of the second retaining walls 320 close to the pixel electrode layer 220, and the projection of the via hole 260 on the substrate plate 210 is covered by the projection of the second retaining wall 320 on the substrate plate 210, so that the opening of the via hole 260 is completely covered by the second retaining wall 320, and electrophoresis particles and electrophoresis liquid cannot enter the via hole 260, making the heights of the electrophoresis particles and electrophoresis liquid in any closed area the same, without forming color differences, effectively avoiding the occurrence of white dots, and thus significantly improving the display uniformity.

[0052] In some embodiments, referring to Figure 4 , the top substrate further includes a top plate 120 and a color filter layer 130 located in the pixel region. The color filter layer 130 is located between the top plate 120 and the common electrode layer 110.

[0053] It should be noted that under the combined driving effect of the common electrode layer 110 and the pixel electrode layer 220, the black particles and white particles in the flow medium layer 400 are arranged to achieve the display and switching of different pictures. Since a color filter layer 130 is provided in each pixel region, the reflected light of the particles located on the top of the flow medium layer 400 will pass through the color filter layer 130. Therefore, by adjusting the base color and light transmittance of the color filter layer 130, the display device can display corresponding colors, thereby realizing the color display of the display device, and also improving the color vividness and picture quality clarity of the display device.

[0054] It should be noted that referring to Figure 4 , one side of the first retaining wall 310 away from the pixel electrode layer 220 and one side of the second retaining wall 320 away from the pixel electrode layer 220 are both connected to the common electrode layer 110. Only the common electrode layer 110 is provided between one side of the first retaining wall 310 away from the pixel electrode layer 220 and the top plate 120, while between one side of the second retaining wall 320 away from the pixel electrode layer 220 and the top plate 120, not only the common electrode layer 110 is provided, but also the color filter layer 130 is provided. In the thickness direction of the display device, the distance between the upper surface of the first retaining wall 310 (i.e., the side away from the pixel electrode layer 220) and the upper surface of the second retaining wall 320 (i.e., the side away from the pixel electrode layer 220) is a first preset length, and the size of the first preset length is the same as the size of the thickness of the color filter layer 130, which can not only ensure the thickness uniformity of the cell formed after the array substrate and the top substrate are bonded. Among them, the better the thickness uniformity of the cell, the more uniform the electrophoresis particles and electrophoresis liquid in the flow medium layer 400, and the better the display effect, and it can also ensure the sealing of the closed area formed by the second retaining wall 320 and the cavity.

[0055] In some embodiments, refer to Figure 5 , Figure 6 The color filter layer 130 includes multiple color sub-filter layers 131 and a first cutout region 132. The projection of the color sub-filter layer 131 on the substrate 210 overlaps with the projection of the closed region on the substrate 210. The first cutout region 132 is located between any two adjacent color sub-filter layers 131. Furthermore, the projection of the first cutout region 132 on the substrate 210 covers the projection of the side of the second barrier 320 away from the pixel electrode layer 220 on the substrate 210.

[0056] It should be noted that the number of color sub-filter layers 131 is the same as the number of enclosed regions. If a second baffle 320 is provided in the cavity, two enclosed regions are formed between the second baffle 320 and the cavity. Correspondingly, the color filter layer 130 includes two color sub-filter layers 131 and a first hollow region 132, so that each enclosed region is covered by a color sub-filter layer 131. Furthermore, the projection of the first hollow region 132 onto the substrate 210 covers the projection of the side of the second baffle 320 away from the pixel electrode layer 220 onto the substrate 210. If a second baffle 320 is provided in the cavity, the second baffle 320 is covered by a second baffle 320 away from the pixel electrode layer 220. There are two second baffles 320, which are cross-connected, forming four closed areas between the second baffles 320 and the cavity. Correspondingly, the color filter layer 130 includes four color sub-filter layers 131 and four first hollow areas 132. The hollow structure formed by the four first hollow areas 132 is in the shape of a cross, so that each closed area is covered by a color sub-filter layer 131. Furthermore, the projection of all the first hollow areas 132 on the substrate 210 covers the projection of the two second baffles 320 on the substrate 210 away from the pixel electrode layer 220.

[0057] For example, refer to Figure 6 The width of the first hollow area 132 is greater than the width of the side of the second barrier 320 away from the pixel electrode layer 220 (i.e., the upper surface of the second barrier 320), and the width of the first hollow area 132 differs from the width of the side of the second barrier 320 away from the pixel electrode layer 220 by a second preset length. The size range of the second preset length is 2-3 μm. In this application, the size of the second preset length is not limited too much.

[0058] It should be noted that the projection of all the first cutout areas 132 onto the substrate 210 can cover the projection of all the second baffles 320 away from the pixel electrode layer 220 onto the substrate 210. This makes the side of the second baffle 320 away from the pixel electrode layer 220 snapped between two adjacent color sub-filter layers 131 without contacting any of the color sub-filter layers 131. As a result, only a common electrode layer 110 is provided between the side of the second baffle 320 away from the pixel electrode layer 220 and the top plate 120, which is on the same plane as the side of the first baffle 310 away from the pixel electrode layer 220. This can ensure the uniformity of the thickness of the cell formed after the array substrate and the top substrate are bonded together. The better the uniformity of the cell thickness, the more uniform the electrophoretic particles and electrophoretic liquid in the flow medium layer 400, resulting in a better display effect. It can also ensure the sealing of the closed area formed by the second baffle 320 and the cavity.

[0059] For example, the closed region is cuboid in shape, and the color sub-filter layer 131 is cuboid in shape. In this application, the shape of the closed region and the color sub-filter layer 131 are not limited in too much.

[0060] For example, the shape of the first hollow area 132 is the same as the shape of the side of the second barrier 320 away from the pixel electrode layer 220 (i.e., the upper surface of the second barrier 320). In this application, the shape of the first hollow area 132 is not limited too much.

[0061] In some embodiments, at least one second hollow area is provided in the color sub-filter layer 131, and the shape of the second hollow area is strip-shaped, square-shaped, circular, or irregular.

[0062] Understandably, when the area of ​​the color sub-filter layer 131 meets the color gamut requirement, the reflected light from the particles at the top of the flow medium layer 400 can not only enter / exit through the gap between the color sub-filter layer 131 and the closed area, but also enter / exit through the second hollow area, increasing the light leakage area of ​​the color sub-filter layer 131. This effectively improves the white value brightness of the display device when displaying a white image, making the color image display effect of the display device more realistic and improving the display effect of the display device.

[0063] It is understandable that, given that the area of ​​the color sub-filter layer 131 satisfies the color gamut, the more second cutout areas there are, the higher the white value brightness of the display device when displaying a white image.

[0064] In some embodiments, refer to Figure 3The gate layer 230 includes a gate trace 231, a first gate 232, and a second gate 233. Both the first gate 232 and the second gate 233 are connected to the gate trace 231. The semiconductor layer includes a first semiconductor layer 241 and a second semiconductor layer 242. The first gate 232 and the source-drain layer 250 are disposed opposite to the first semiconductor layer 241, and the second gate 233 and the source-drain layer 250 are disposed opposite to the second semiconductor layer 242.

[0065] It should be noted that the source-drain layer 250 includes a source 252, a drain 251, and a source trace 253. The source trace 253 is connected to the source 252. Multiple gate traces 231 intersect and form multiple pixel units. By applying an enable voltage to the gate trace 231 on the substrate 210, the thin-film transistor in the pixel unit switches from the off state to the on state. Furthermore, since the pixel electrode layer 220 is connected to the drain 251 through the via 260, the enable voltage can be applied from the drain 251 of the thin-film transistor to the pixel electrode layer 220.

[0066] It is understandable that the first gate 232 and the second gate 233 are connected in series and work together to form a gradient potential to regulate the electric field distribution in the output region of the thin film transistor. The optimized electric field distribution helps to reduce the charge trapping effect of the thin film transistor during operation, thereby improving the stability of the thin film transistor.

[0067] In some embodiments, the thin-film transistor further includes an isolation layer, and the via 260 is located in the isolation layer.

[0068] For example, refer to Figure 4 , Figure 6 The isolation layer includes a first insulating layer 271 and a protective layer 272. The first insulating layer 271 is located on the side of the source-drain layer 250 away from the substrate 210, and the protective layer 272 is located on the side of the first insulating layer 271 away from the substrate 210. The protective layer 272 is located between the first insulating layer 271 and the pixel electrode layer 220. The via 260 is used to penetrate the first insulating layer 271 and the protective layer 272 to realize the connection between the pixel electrode layer 220 and the drain 251 in the source-drain layer 250.

[0069] It should be noted that the protective layer 272 is disposed between the first insulating layer 271 and the pixel electrode layer 220. On the one hand, it can increase the physical distance between the source / drain layer 250 and the pixel electrode layer 220, thereby reducing the parasitic capacitance between them and ensuring that the voltage of the pixel electrode layer 220 can accurately reflect the driving signal and guarantee the display effect. On the other hand, if the surface of the first insulating layer 271 is uneven, directly placing the pixel electrode layer 220 on the uneven surface can easily lead to uneven film thickness and inconsistent resistance distribution of the pixel electrode layer 220. Therefore, by further setting the protective layer 272, it is beneficial to smooth the surface of the thin film transistor and the pixel electrode layer 220 in contact and optimize the film formation quality of the pixel electrode layer 220.

[0070] In some embodiments, refer to Figure 4 , Figure 6 The thin-film transistor further includes a second insulating layer 280, which is disposed between the semiconductor layer and the gate layer 230.

[0071] It should be noted that the second insulating layer 280 is disposed between the semiconductor layer and the gate layer 230, which can prevent electrical connection between the two conductive layers, the semiconductor layer and the gate layer 230. In addition, the second insulating layer 280 extends between the source / drain layer 250 and the gate layer 230, which can prevent electrical connection between the two conductive layers, the source / drain layer 250 and the gate layer 230.

[0072] In some embodiments, the substrate 210 is made of at least one of glass, acrylic sheet, polyimide, and polyethylene terephthalate; and / or, the top plate 120 is made of at least one of glass, acrylic sheet, polyimide, and polyethylene terephthalate.

[0073] Secondly, this application provides an electronic device that includes a display device as described in any embodiment of the first aspect of this application.

[0074] According to the display device and electronic device provided in this application, firstly, the support structure includes a first baffle 310 and a second baffle 320. Compared with the support structure in the related art that consists only of the first baffle 310, the support effect of the support structure can be further improved, preventing the array substrate and the top substrate from crushing the flow dielectric layer 400 during the bonding process, thus improving the production yield and the reliability of the product. Secondly, the projection of the via 260 on the substrate 210 is covered by the projection of the second baffle 320 on the substrate 210, so that the opening of the via 260 is completely covered by the second baffle 320. The electrophoretic particles and electrophoretic liquid in the closed area cannot enter the via 260, so that the height of the electrophoretic particles and electrophoretic liquid in any closed area is the same, and no color difference is formed, effectively avoiding the occurrence of white spots, thereby significantly improving the uniformity of the display.

[0075] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0076] 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.

[0077] 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.

[0078] It should also be understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, herein, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0079] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display device, characterized in that, include: Top substrate, including common electrode layer; An array substrate is disposed opposite to the top substrate. The array substrate includes a substrate plate and a plurality of pixel units disposed on the substrate plate. Each pixel unit includes a pixel electrode layer and a thin film transistor. The thin film transistor is located between the pixel electrode layer and the substrate plate. The thin film transistor includes a gate layer, a semiconductor layer and a source-drain layer. In the thickness direction of the array substrate, the gate layer and the source-drain layer are disposed opposite to the semiconductor layer. The pixel electrode layer is connected to the drain of the source-drain layer through a via. A support structure is disposed between the common electrode layer and the pixel electrode layer. The support structure includes multiple first baffles and second baffles. The multiple first baffles intersect to form a cavity. The cavity is located in the pixel region. The pixel region is the projection area of ​​the pixel unit in the thickness direction of the display device. The second baffle is disposed in the cavity. The projection of the second baffle on the substrate covers the projection of the via on the substrate. Multiple closed areas are formed between the second baffle and the cavity. A flow medium layer is located within the cavity, and the flow medium layer includes electrophoretic particles and electrophoretic liquid disposed in the enclosed region.

2. The display device according to claim 1, characterized in that, A second baffle wall is provided inside the cavity, and the second baffle wall and the cavity form two closed areas.

3. The display device according to claim 2, characterized in that, The second barrier includes a first barrier portion and a first filling portion. The first barrier portion forms two closed areas between itself and the cavity. The first filling portion covers the pixel electrode layer located in the via.

4. The display device according to claim 1, characterized in that, Two second baffles are provided inside the cavity, and the two second baffles are connected at an intersection, forming four closed areas between the second baffles and the cavity.

5. The display device according to claim 4, characterized in that, The opening of the through hole is located in the corner area, which is the projection area of ​​the corner formed by the intersection of the two second retaining walls in the thickness direction of the display device.

6. The display device according to claim 1, characterized in that, The top substrate also includes a top plate and a color filter layer located in the pixel region, the color filter layer being located between the top plate and the common electrode layer.

7. The display device according to claim 6, characterized in that, The color filter layer includes multiple color sub-filter layers and a first cutout region. The projection of the color sub-filter layer on the substrate overlaps with the projection of the closed region on the substrate. The first cutout region is located between any two adjacent color sub-filter layers. Furthermore, the projection of the first cutout region on the substrate covers the projection of the side of the second barrier away from the pixel electrode layer on the substrate.

8. The display device according to claim 1, characterized in that, The gate layer includes a gate trace, a first gate, and a second gate. The first gate and the second gate are both connected to the gate trace. The semiconductor layer includes a first semiconductor layer and a second semiconductor layer. The first gate and the source / drain layer are disposed opposite to the first semiconductor layer, and the second gate and the source / drain layer are disposed opposite to the second semiconductor layer.

9. The display device according to claim 1, characterized in that, The thin-film transistor further includes an isolation layer, and the via is located in the isolation layer.

10. An electronic device, characterized in that, The electronic device includes a display device as described in any one of claims 1-9.

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