Display panel, preparation method thereof and display device

Abstract

The application provides a display panel, a display device and a preparation method, which comprise: a substrate; a plurality of pixel units arranged on one side of the substrate; and a pixel isolation structure located on the same side of the substrate as the pixel units, the pixel isolation structure being at least partially located between two adjacent pixel units. By arranging the pixel isolation structure on the display panel, the occurrence of color mixing between the two adjacent pixel units is avoided to some extent, thereby improving the display effect of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and its manufacturing method, and a display device. Background Technology

[0002] Organic light-emitting diode (OLED) and flat panel display devices based on light-emitting diode (LED) technologies are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body and wide range of applications, becoming the mainstream of display devices.

[0003] However, the performance of current display devices needs improvement. Summary of the Invention

[0004] In view of this, various embodiments of this application aim to provide a display panel, display device, and manufacturing method, which to a certain extent solve the problem of color mixing caused by the superposition of different colors during the evaporation of different color pixel units, thereby improving the product yield of the display panel and improving the display effect of the display panel.

[0005] To achieve the above objectives, one embodiment of this application provides a display panel, comprising: a substrate; a plurality of pixel units disposed on one side of the substrate; wherein adjacent pixel units emit light of different colors; wherein the plurality of pixel units are arranged in an array along a first direction and a second direction; a pixel isolation structure located on the same side of the substrate as the pixel units, the pixel isolation structure being at least partially located between two adjacent pixel units; wherein the pixel isolation structure includes a plurality of first pixel isolation structures and a plurality of second pixel isolation structures, the first pixel isolation structures extending along the first direction and located between two adjacent pixel units along the second direction; the second pixel isolation structures extending along the second direction and located between two adjacent pixel units along the first direction; wherein the thickness of the pixel isolation structure in the stacking direction of the display panel is not less than the thickness of the pixel units in the stacking direction of the display panel.

[0006] One embodiment of this application provides a display device, the display device including the display panel described in any of the above claims.

[0007] In some embodiments, the thickness of the pixel isolation structure in the stacking direction of the display panel includes 30µm-120µm.

[0008] In some embodiments, the spacing between the pixel isolation structure and the adjacent pixel unit includes 45um-55um.

[0009] In some implementations, the pixel isolation structure has the same spacing as the adjacent pixel units.

[0010] In some embodiments, the dimensions of the first pixel isolation structure along the second direction include 1.5µm-5µm.

[0011] Preferably, the size of the second pixel isolation structure along the first direction includes 1.5um-5um.

[0012] In some embodiments, the dimensions of the first pixel isolation structure along the first direction include 25µm-35µm;

[0013] Preferably, the size of the second pixel isolation structure along the second direction includes 25um-35um.

[0014] In some embodiments, the pixel unit includes a light-emitting portion, wherein the light-emitting portion and the pixel isolation structure are located on the same layer.

[0015] In some embodiments, the pixel isolation structure is a black organic photosensitive material.

[0016] In some embodiments, forming a pixel isolation structure on one side of the substrate includes:

[0017] An isolation layer is formed on one side of the substrate; the isolation layer is exposed to form the pixel isolation structure.

[0018] One embodiment of this application provides a method for manufacturing a display panel, comprising: providing a substrate; forming a pixel isolation structure on one side of the substrate; forming a plurality of pixel units on the same side of the substrate opposite to the pixel isolation structure; wherein the pixel isolation structure is at least partially located between two adjacent pixel units; wherein the pixel isolation structure includes a plurality of first pixel isolation structures and a plurality of second pixel isolation structures, the first pixel isolation structures extending along a first direction and located between two adjacent pixel units along a second direction; the second pixel isolation structures extending along the second direction and located between two adjacent pixel units along the first direction; wherein the thickness of the pixel isolation structure in the stacking direction of the display panel is not less than the thickness of the pixel units in the stacking direction of the display panel.

[0019] Compared with existing technologies, the display panel provided in this application has the following advantages: by setting a pixel isolation structure on the substrate before evaporating the pixel units, the pixel isolation structure prevents the mixing of materials corresponding to adjacent pixel units during pixel unit evaporation. This solves the problem of color mixing caused by different color pixel units during evaporation to a certain extent, improving the product yield of the display panel and enhancing its display effect. Attached Figure Description

[0020] To further illustrate the embodiments of the present invention more clearly, and as part of this specification, these figures are used together with the following detailed description to explain this specification, but do not constitute a limitation on the embodiments of the present specification. For those skilled in the art, other figures can be obtained from these figures without any inventive effort.

[0021] Figure 1 This is a schematic diagram of the structure of a display panel provided for one embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the structure of a display panel provided for one embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the structure of a display panel provided for one embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the structure of a display panel provided for one embodiment of this application.

[0025] Figure 5 This is a schematic diagram of the structure of a display panel provided for one embodiment of this application.

[0026] Figure 6 This is a schematic diagram illustrating the manufacturing process of a display panel, provided as one embodiment of this application.

[0027] Marker explanation:

[0028] 100. Display panel;

[0029] 110, Substrate; 120, Pixel unit; 130, Pixel isolation structure; 131, First pixel isolation structure; 132, Second pixel isolation structure; 121, Light-emitting part; 122, Anode layer; 140, Isolation layer. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0031] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0032] The features and implementations of various aspects of this application will now be described in detail. Furthermore, the features, structures, or characteristics described herein may be combined in any suitable manner in one or more implementations.

[0033] Please see Figure 1 and Figure 2 . One embodiment of this application provides a display panel 100, including: a substrate 110; a plurality of pixel units 120 disposed on one side of the substrate 110; wherein the light emitted by two adjacent pixel units 120 is of different colors; wherein the plurality of pixel units 120 are arranged in an array along a first direction (Y direction) and a second direction (X direction); a pixel isolation structure 130 located on the same side of the substrate 110 as the pixel units 120, the pixel isolation structure 130 being at least partially located between two adjacent pixel units 120; wherein the pixel isolation structure 130 includes a plurality of first pixel isolation structures 131 and a plurality of second pixel isolation structures 132, the first pixel isolation structures 131 extending along the first direction and located between two adjacent pixel units 120 along the second direction; the second pixel isolation structures 132 extending along the second direction and located between two adjacent pixel units 120 along the first direction; wherein the thickness of the pixel isolation structure 130 in the stacking direction of the display panel 100 is not less than the thickness of the pixel units 120 in the stacking direction of the display panel 100.

[0034] In this embodiment, the display panel 100 can be an OLED display panel 100. The OLED display panel 100 is based on the light-emitting properties of organic materials. When current passes through the organic light-emitting layer, electrons and holes recombine, causing organic molecules to transition from the excited state to the ground state, releasing photons and thus achieving light emission. Each pixel unit 120 can emit light independently, eliminating the need for a backlight. The OLED display panel 100 has self-emissive properties, thus achieving extremely high contrast; black areas can remain completely black, displaying pure black. Simultaneously, it has a fast response speed, enabling excellent display of high-speed dynamic images, and its color performance is also outstanding. Furthermore, the OLED display panel 100 can be made very thin and light, and can even be bent and folded, providing greater flexibility in product design and allowing its application in various devices. Specifically, examples include high-end smartphones, tablets, televisions, wearable devices, and automotive displays. Of course, other types of display panels 100 can also be used.

[0035] In this embodiment, the display panel 100 may include a substrate 110. The substrate 110 provides stable physical support for other film layers of the display panel 100, ensuring they remain in a fixed position during manufacturing and use. The substrate 110 may have numerous conductive lines and contacts for connecting different electronic components, enabling circuit conduction and signal transmission. For example, in the display panel, the lines on the substrate connect pixel driving circuits to power supplies, data input ports, etc. In some high-power or high-density electronic devices, the substrate 100 can also aid in heat dissipation. For example, by embedding heat dissipation channels in the substrate or using highly thermally conductive materials, the heat generated by components during operation can be effectively reduced, improving the stability and lifespan of the device. The substrate 110 may be a rigid substrate. Specifically, for example, the rigid substrate may be a glass substrate 110, a PMMA (Polymethylmethacrylate) substrate 110, a silicon substrate 110, etc. Thus, the display panel 100 can be a rigid display panel. The substrate 110 may also be a flexible substrate. Specifically, for example, the substrate 110 can be a PET (Polyethylene Terephthalate) substrate 110, a PEN (Polyethylenenaphthalate dimethyl methacrylate) substrate, or a PI (Polyimide) substrate 110, etc. The flexible substrate 110 has good flexibility and can be bent, folded, or even rolled up, making it suitable for flexible display devices; therefore, the display panel 100 can be a flexible display panel 100.

[0036] In this embodiment, the substrate 110 may include a pixel driving circuit, which is electrically connected to the pixel unit 120 and drives the pixel unit 120 to emit light. The display panel 100 may include a plurality of pixel units 120, wherein some pixel units 120 display the same color. Specifically, for example, the pixel unit 120 may display red, green, or blue. All pixel units 120 of the display panel 100 display at least two colors. The brightness (grayscale) of each pixel unit 120 can be adjusted, and multiple colors can be displayed through color combination and superposition, thereby achieving full-color display of the display panel 100.

[0037] In some implementations, the pixel driving circuit directly determines the performance and display effect of the display panel 100. The pixel driving circuit primarily controls the luminous intensity (for self-emissive display panels 100 such as OLEDs) or transmittance (for display panels 100 requiring a backlight such as LCDs) of each pixel unit 120. By precisely controlling the current or voltage, the driving circuit can adjust the brightness and color of the pixel units 120, thereby achieving image display. The image signals received by the display panel 100 are typically digital signals, while the pixel units 120 require analog signals to drive them to emit or transmit light. The pixel driving circuit is responsible for converting the digital signals into analog signals and amplifying them to a sufficient intensity to drive the pixel units 120. The pixel driving circuit needs to precisely control the timing of the signals to ensure that each pixel unit 120 lights up or turns off at the correct time. This is crucial for achieving high refresh rates and smooth dynamic displays.

[0038] In this embodiment, two adjacent pixel units 120 on the display panel 100 can display different colors. Specifically, for example, one pixel unit 120 can display red, and another adjacent pixel unit 120 can display green. Alternatively, one pixel unit 120 can display green, and another adjacent pixel unit 120 can display blue. Or, one pixel unit 120 can display blue, and another adjacent pixel unit 120 can display red. Due to potential deviations during the deposition of the pixel units 120, the deposition position of the pixel units 120 may shift, resulting in different colored materials being deposited on the pixel units 120, causing color mixing in the display panel 100. Specifically, for example, edge color mixing or partial color mixing of the pixel units 120. This reduces the display effect of the display panel 100 to some extent. A pixel isolation structure 130 is provided on the substrate 110. This pixel isolation structure 130 can be disposed on the same side as the pixel units 120 and can be stacked on the substrate 110. At least a portion of the pixel isolation structure 130 is located between adjacent pixel units 120. Specifically, for example, the pixel isolation structure 130 may be partially located between two adjacent pixel units 120, or it may be entirely located between two adjacent pixel units 120.

[0039] In some implementations, the arrangement of the pixel units 120 in the display panel 100 can be determined based on factors such as color performance, resolution, and brightness uniformity. There are many possible arrangements of the pixel units 120. Specifically, these include, for example, red-green-blue pixel unit arrangements, red-green-blue-white pixel unit arrangements, PenTile pixel arrangements, and triangular pixel unit arrangements. The red-green-blue pixel unit arrangement can mix various colors, resulting in rich and accurate color performance. The red-green-blue-white pixel unit arrangement can improve the brightness and contrast of the display panel while reducing power consumption. The PenTile pixel arrangement can achieve higher pixel density within the same area, improving the resolution of the display panel 100. The triangular pixel unit arrangement can improve pixel density and color mixing effects.

[0040] In some embodiments, the pixel isolation structure 130 can be fabricated before the pixel unit 120 is vapor-deposited, so that the positions on the substrate 110 where the pixel unit 120 needs to be vapor-deposited are separated by the pixel isolation structure 130. During the vapor deposition of the pixel unit 120, the pixel isolation structure 130 prevents the material from overlapping between adjacent pixel units 120, avoiding color mixing between pixel units 120, thereby improving the display effect of the display panel 100.

[0041] In this embodiment, the first direction is Figure 1 As shown in the Y-mode, the second direction is as follows Figure 1As shown in the X-direction. Multiple pixel units 120 are arranged in an array along a first direction and a second direction. The pixel isolation structure 130 includes multiple first pixel isolation structures 131 extending along the first direction and multiple second pixel isolation structures 132 extending along the second direction. The first pixel isolation structures 131 are located between two adjacent pixel units 120 along the second direction, and the second pixel isolation structures 132 are located between two adjacent pixel units 120 along the first direction. The pixel isolation structures 130 are distributed according to the arrangement of the multiple pixel units 120 on the substrate 110, which can better prevent color mixing of the pixel units 120.

[0042] In some embodiments, the plurality of pixel units 120 on the display panel 100 may also be arranged in other ways. Specifically, for example, the pixel units 120 may be arranged in a diamond pattern. The pixel isolation structure 130 may be arranged in the manner of the pixel units 120.

[0043] In this embodiment, the thickness of the pixel units 120 of different display panels 100 in the stacking direction of the display panels 100 can be different, and the thickness of the pixel isolation structure 130 in the stacking direction of the display panels 100 also needs to be different. The thickness of the pixel isolation structure 130 in the stacking direction of the display panels 100 can be determined based on the thickness of the pixel unit 120 in the stacking direction of the display panels 100. When the thickness of the pixel isolation structure 130 in the stacking direction of the display panels 100 is equal to or greater than the thickness of the pixel unit 120 in the stacking direction of the display panels 100, the color mixing problem between two adjacent pixel units 120 can be better solved, thereby improving the display effect of the display panel 100.

[0044] In some implementations, vapor deposition can refer to a process for manufacturing thin films using physical vapor deposition (PVD) technology under vacuum conditions. It is widely used in display panel manufacturing, semiconductor manufacturing, optical coatings, and many other fields. Vapor deposition can include thermal evaporation, electron beam evaporation, and laser evaporation. Thermal evaporation involves heating and evaporating a source material to form a thin film, which is simple, low-cost, and suitable for materials with low evaporation temperatures. Electron beam evaporation uses a high-energy electron beam to bombard the source material, rapidly heating and evaporating it. This method can quickly evaporate high-melting-point materials, improving production efficiency. It allows for precise control of the evaporation rate and film thickness, making it suitable for high-melting-point materials. Laser evaporation utilizes the high energy density of a laser beam to rapidly heat the source material, causing it to evaporate and deposit onto a substrate. This method enables localized deposition and high-precision patterning.

[0045] In some embodiments, the thickness of the pixel isolation structure 130 in the stacking direction of the display panel 100 includes 30um-120um.

[0046] In this embodiment, the thickness of the pixel isolation structure 130 in the stacking direction of the display panel 100 can be in the range of 30µm-120µm. Specifically, for example, the thickness of the pixel isolation structure 130 can be 30µm, 38µm, 110µm, 120µm, or 75µm. When the thickness of the pixel isolation structure 130 is less than 30µm, the fabrication precision needs to be increased, which increases the fabrication cost. When the thickness of the pixel isolation structure 130 is greater than 120µm, after the display panel 100 is fabricated, the pixel isolation structure 130 may cause unevenness in the display panel 100, thus affecting the performance. The thickness of the pixel isolation structure 130 needs to be within a certain range to improve the display effect of the display panel 100.

[0047] In some embodiments, the spacing between the pixel isolation structure 130 and the adjacent pixel unit 120 includes 45um-55um.

[0048] In this embodiment, if the pixel isolation structure 130 is too close to the corresponding pixel unit 120, the pixel isolation structure 130 may affect the light emission of the pixel unit 120, reducing the display effect of the display panel 100. If the pixel isolation structure 130 is too far from the corresponding pixel unit 120, the effect of the pixel isolation structure 130 in blocking color mixing between two adjacent pixel units is reduced. In order not to affect the light emission of the pixel unit 120, and in order for the pixel isolation structure 130 to effectively block color mixing between adjacent pixel units 120, the spacing between the pixel isolation structure 130 and the adjacent pixel unit 120 can be 45um-55um. Specifically, for example, the spacing between the pixel isolation structure 130 and the adjacent pixel unit 120 can be 45um, 48.5um, 52um, 50um, or 55um. When the spacing between the pixel isolation structure 130 and the adjacent pixel unit 120 is less than 45um, the pixel isolation structure 130 affects the light emission of the display panel 100, affecting the display effect. When the distance between the pixel isolation structure 130 and its adjacent pixel unit 120 is greater than 55um, the effect of the pixel isolation structure 130 in blocking the color mixing of two adjacent pixel units 120 is reduced.

[0049] In some implementations, when the distance between two adjacent pixel units 120 is greater than a certain range, the pixel isolation structure 130 may not be provided between the two adjacent pixel units 120. When the distance between the two adjacent pixel units 120 is large, color mixing will not occur. Reducing the setting of the pixel isolation structure 130 can improve the light emission of the pixel unit 120 to a certain extent, thereby improving the display effect of the display panel 100.

[0050] In some embodiments, the pixel isolation structure 130 is spaced at the same distance from the adjacent pixel unit 120.

[0051] In this embodiment, the pixel isolation structure 130 is positioned at the same distance as the two adjacent pixel units 120. The pixel isolation structure 130 can simultaneously isolate the adjacent pixel units 120, thereby better solving the color mixing problem of the adjacent pixel units 120. It can also effectively prevent the pixel isolation structure 130 from blocking the light emission of the pixel units 120, thereby improving the display effect of the display panel 100.

[0052] In some embodiments, the dimensions of the first pixel isolation structure 131 along the second direction include 1.5µm-5µm.

[0053] In this embodiment, the size of the first pixel isolation structure 131 along the second direction can be within a certain range. If the size of the first pixel isolation structure 131 along the second direction is too large, it may affect the light emission of adjacent pixel units 120, thereby affecting the display effect of the display panel 100. If the size of the first pixel isolation structure 131 along the second direction is too small, it increases the manufacturing precision requirements, thereby increasing the manufacturing cost. In order to reduce costs and improve the display effect of the display panel 100, the size of the first pixel isolation structure 131 along the second direction can include 1.5um-5um. Specifically, for example, the size of the first pixel isolation structure 131 along the second direction can be 1.5um, 1.78um, 3.2um, 5um, or 3um. When the size of the first pixel isolation structure 131 along the second direction is less than 1.5um, the manufacturing precision requirements of the first pixel isolation structure 131 are increased, and the cost is increased. When the size of the first pixel isolation structure 131 along the second direction is greater than 5µm, the first pixel isolation structure 131 may affect the light emission of the adjacent pixel unit 120, thereby reducing the display effect of the display panel 100.

[0054] In some embodiments, the dimensions of the first pixel isolation structure 131 along the first direction include 25µm-35µm.

[0055] In this embodiment, the dimension of the first pixel isolation structure 131 along the first direction can be positively correlated with the dimension of the adjacent pixel unit 120 extending in the first direction. A larger dimension of the adjacent pixel unit 120 extending in the first direction corresponds to a larger dimension of the first pixel isolation structure 131 along the first direction. Conversely, a smaller dimension of the adjacent pixel unit 120 extending in the first direction corresponds to a smaller dimension of the first pixel isolation structure 131 along the first direction.

[0056] In this embodiment, in some display panels 100, the dimension of the first pixel isolation structure 131 along the first direction is greater than 35µm. This first pixel isolation structure 131 may block the light emission of the corresponding pixel unit 120, thereby affecting the display effect of the display panel 100. If the dimension of the first pixel isolation structure 131 along the first direction is less than 25µm, the first pixel isolation structure 131 may not provide adequate isolation, thus affecting the display effect of the display panel 100. In some display panels 100, the dimension of the first pixel isolation structure 131 along the first direction includes 25µm-35µm. Specifically, for example, the dimension of the first pixel isolation structure 131 along the first direction can be 25µm, 30µm, 32µm, 27µm, or 35µm. Within a certain range, the dimension of the first pixel isolation structure 131 along the first direction can ensure both the isolation effect of the first pixel isolation structure 131 and the display effect of the display panel 100.

[0057] In some embodiments, the dimensions of the second pixel isolation structure 132 along the second direction include 25µm-35µm.

[0058] In this embodiment, the dimension of the second pixel isolation structure 132 along the second direction can be positively correlated with the dimension of the adjacent pixel unit 120 extending in the second direction. If the dimension of the pixel unit 120 adjacent to the second pixel isolation structure 132 extending in the second direction is large, the corresponding dimension of the second pixel isolation structure 132 along the second direction is correspondingly large. Conversely, if the dimension of the pixel unit 120 adjacent to the second pixel isolation structure 132 extending in the second direction is small, the corresponding dimension of the second pixel isolation structure 132 along the second direction is correspondingly small.

[0059] In this embodiment, in some display panels 100, the size of the second pixel isolation structure 132 along the second direction is greater than 35µm. This second pixel isolation structure 132 may block the light emission of the corresponding pixel unit 120, thereby affecting the display effect of the display panel 100. If the size of the second pixel isolation structure 132 along the second direction is less than 25µm, the second pixel isolation structure 132 may not provide adequate isolation, thus affecting the display effect of the display panel 100. In some display panels 100, the size of the second pixel isolation structure 132 along the second direction includes 25µm-35µm. Specifically, for example, the size of the second pixel isolation structure 132 along the second direction can be 25µm, 30µm, 35µm, 28µm, or 27µm. This can improve both the isolation effect of the second pixel isolation structure 132 and the display effect of the display panel 100.

[0060] In some embodiments, the second pixel isolation structure 132 has a dimension of 1.5µm-5µm along the first direction.

[0061] In this embodiment, the size of the second pixel isolation structure 132 along the first direction can be within a certain range. If the size of the second pixel isolation structure 132 along the first direction is too large, it may affect the light emission of the corresponding pixel unit 120, thereby affecting the display effect of the display panel 100. If the size of the second pixel isolation structure 132 along the first direction is too small, it increases the manufacturing process requirements of the second pixel isolation structure 132 and increases its manufacturing cost. In order to reduce costs and improve the display effect of the display panel 100, the size of the second pixel isolation structure 132 along the first direction can include 1.5um-5um. Specifically, for example, the size of the second pixel isolation structure 132 along the first direction can be 1.5um, 5um, 3um, 2.5um, or 3.8um. ​​When the size of the second pixel isolation structure 132 along the first direction is less than 1.5um, the manufacturing process requirements are increased, thereby increasing the cost. When the size of the second pixel isolation structure 132 along the first direction is greater than 5um, the second pixel isolation structure 132 may affect the light emission of the first pixel unit 120, thereby reducing the display effect of the display panel 100.

[0062] Please see Figure 3 In some embodiments, the pixel unit 120 includes a light-emitting portion 121, wherein the light-emitting portion 121 and the pixel isolation structure 130 are located on the same layer.

[0063] In this embodiment, the pixel unit 120 may include a light-emitting portion 121, and may also include other components. Specifically, the pixel unit 120 may also include an anode layer 122, which may be a composite structure formed by sequentially stacking transparent conductive oxide films / metal films / transparent conductive oxide films, or it may be a single-layer structure. The light-emitting portion 121 may be formed of a luminescent dye. The pixel unit 120 emits light of a corresponding color according to the luminescent dye of the light-emitting portion 121. Specifically, for example, if the pixel unit 120 emits red light, the luminescent dye of the corresponding light-emitting portion 121 of the pixel unit 120 is a red dye. If two adjacent pixel units 120 emit different colors, the luminescent dyes of the corresponding light-emitting portions 121 of the two adjacent pixel units 120 are different. When fabricating the light-emitting portion 121, the luminescent dye is usually fabricated by vapor deposition. During this process, when two adjacent different luminescent dyes are deposited, the deposition positions of the luminescent dyes may shift, causing mixing of luminescent dyes in adjacent luminescent sections 121. This results in color mixing in the luminescent sections 121, and may further cause color mixing in the pixel units 120. To solve this problem, a pixel isolation structure 130 is provided at a corresponding position before depositing the luminescent sections 121. This pixel isolation structure 130 can be disposed on the same layer as the luminescent sections 121, which can reduce manufacturing process requirements and lower costs.

[0064] In some embodiments, the pixel isolation structure 130 is a black organic photosensitive material.

[0065] In this embodiment, the pixel isolation structure 130 can be a black organic photosensitive material. This black organic photosensitive material can be an organic photosensitive material doped with black light-absorbing particles. For example, carbon black or titanium dioxide can be used as the material for the black light-absorbing particles, and acrylic acid, epoxy resin, or polyimide can be used as the organic photosensitive material.

[0066] In this embodiment, the black organic photosensitive material is exposed and developed, and after etching, the remaining black organic photosensitive material is directly retained as the pixel isolation structure 130. This simplifies the production process and reduces costs.

[0067] Another embodiment of this application provides a display device, the display device including a display panel 100 as described in any of the preceding claims.

[0068] In this embodiment, the display device may include the display panel 100 as described in any of the preceding claims. The display panel 100, by providing a pixel isolation structure 130, solves the color mixing problem between two adjacent pixel units 120 to a certain extent, improving the display effect of the display panel 100 and thus improving the display effect of the display device.

[0069] Please see Figure 6 Another embodiment of this application provides a method for manufacturing a display panel 100, the method comprising the following steps:

[0070] Step S110: Provide substrate 110;

[0071] Step S120: A pixel isolation structure 130 is formed on one side of the substrate 110; see [link to relevant documentation]. Figure 4 ;

[0072] Step S130: A plurality of pixel units 120 are formed on the same side of the substrate 110 opposite to the pixel isolation structure 130; wherein the pixel isolation structure 130 is at least partially located between two adjacent pixel units 120; wherein the pixel isolation structure 130 includes a plurality of first pixel isolation structures 131 and a plurality of second pixel isolation structures 132, the first pixel isolation structures 131 extend along the first direction and are located between two adjacent pixel units 120 along the second direction; the second pixel isolation structures 132 extend along the second direction and are located between two adjacent pixel units 120 along the first direction; wherein the thickness of the pixel isolation structure 130 in the stacking direction of the display panel 100 is not less than the thickness of the pixel unit 120 in the stacking direction of the display panel 100. Please refer to... Figure 1 and Figure 2 .

[0073] In this embodiment, a substrate 110 corresponding to the display panel 100 to be fabricated is provided. Specifically, for example, if a flexible display panel 100 needs to be fabricated, a flexible substrate 110 is provided; if a rigid display panel 100 needs to be fabricated, a rigid substrate 110 is provided. A pixel isolation structure 130 is formed on one side of the substrate 110. Specifically, the pixel isolation structure 130 can be formed by vapor deposition of a black photosensitive material. Multiple pixel isolation structures 130 can be present on the substrate, and there can be a certain distance between two adjacent pixel isolation structures 130 to reserve space for the formation of multiple pixel units 120. Pixel units 120 are disposed on the side of the substrate 110 with the pixel isolation structure 130. The pixel isolation structure 130 can be partially or entirely located between two adjacent pixel units 120. During the fabrication of the pixel units 120, the pixel isolation structure 130 prevents color mixing between two adjacent pixel units 120, improving product yield and enhancing the display effect of the display panel 100.

[0074] In some embodiments, step S120, forming a pixel isolation structure 130 on one side of the substrate 110, includes forming an isolation layer 140 on one side of the substrate 110; see also Figure 5 ;

[0075] The isolation layer 140 is exposed to form the pixel isolation structure 130. (See also...) Figure 4 .

[0076] In this embodiment, the isolation layer 140 may be a film layer formed by vapor deposition of a black photosensitive material on one side of the substrate 110. The isolation layer 140 is exposed by absorption, and the remaining film layer on the substrate 110 is a plurality of pixel isolation structures 130.

[0077] The various embodiments described in this specification emphasize the parts that differ from other embodiments, and these embodiments can be explained by comparison with each other. Any combination of the various embodiments described in this specification, based on general technical knowledge, is covered within the scope of this specification.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above description is only a part of the embodiments described in this specification and is not intended to limit this specification. Any modifications or equivalent substitutions made within the spirit and principles of this specification should be included within the scope of this specification.

Claims

1. A display panel, characterized in that, include: substrate; Multiple pixel units are disposed on one side of the substrate; wherein, the light emitted by two adjacent pixel units is of different colors; wherein, the multiple pixel units are arranged in an array along a first direction and a second direction; A pixel isolation structure is located on the same side of the substrate as the pixel unit, and the pixel isolation structure is at least partially located between two adjacent pixel units; wherein the pixel isolation structure includes a plurality of first pixel isolation structures and a plurality of second pixel isolation structures, the first pixel isolation structures extend along a first direction and are located between two adjacent pixel units along a second direction; the second pixel isolation structures extend along the second direction and are located between two adjacent pixel units along the first direction. Wherein, the thickness of the pixel isolation structure in the stacking direction of the display panel is not less than the thickness of the pixel unit in the stacking direction of the display panel.

2. The display panel according to claim 1, characterized in that, The thickness of the pixel isolation structure in the stacking direction of the display panel includes 30um-120um.

3. The display panel according to claim 1, characterized in that, The spacing between the pixel isolation structure and the adjacent pixel unit includes 45um-55um; Preferably, the pixel isolation structure has the same spacing as the adjacent pixel units.

4. The display panel according to claim 2, characterized in that, The dimensions of the first pixel isolation structure along the second direction include 1.5um-5um; Preferably, the size of the second pixel isolation structure along the first direction includes 1.5um-5um.

5. The display panel according to claim 1, characterized in that, The dimensions of the first pixel isolation structure along the first direction include 25um-35um; Preferably, the size of the second pixel isolation structure along the second direction includes 25um-35um.

6. The display panel according to claim 1, characterized in that, The pixel unit includes a light-emitting part, wherein the light-emitting part and the pixel isolation structure are located on the same layer.

7. The display panel according to claim 1, characterized in that, The pixel isolation structure is made of black organic photosensitive material.

8. A display device, characterized in that, The display device includes a display panel as described in any one of claims 1-7.

9. A method for manufacturing a display panel, characterized in that, include: Provide substrate; A pixel isolation structure is formed on one side of the substrate; A plurality of pixel units are formed on the same side of the substrate opposite to the pixel isolation structure; wherein the pixel isolation structure is at least partially located between two adjacent pixel units; wherein the pixel isolation structure includes a plurality of first pixel isolation structures and a plurality of second pixel isolation structures, the first pixel isolation structures extending along the first direction and located between two adjacent pixel units along the second direction; the second pixel isolation structures extending along the second direction and located between two adjacent pixel units along the first direction; Wherein, the thickness of the pixel isolation structure in the stacking direction of the display panel is not less than the thickness of the pixel unit in the stacking direction of the display panel.

10. The preparation method according to claim 9, characterized in that, The step of forming a pixel isolation structure on one side of the substrate includes: An isolation layer is formed on one side of the substrate; The isolation layer is exposed to form the pixel isolation structure.

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