Display panel and its manufacturing method, display device

Abstract

This application provides a display panel, its manufacturing method, and a display device. The display panel includes: a back panel; a light-emitting layer disposed on one side of the back panel; an organic layer disposed on the side of the light-emitting layer away from the back panel, wherein the orthographic projection of the organic layer on the back panel overlaps with the orthographic projection of the light-emitting layer on the back panel, and the organic layer has a predetermined thickness along a direction perpendicular to the back panel; a first inorganic layer disposed on the side of the organic layer away from the back panel; and a color filter unit disposed on the side of the first inorganic layer away from the back panel, the color filter unit including a filter portion, wherein the orthographic projection of the organic layer on the back panel is located within the orthographic projection of the filter portion on the back panel. This application can solve the technical problem of foreign objects intruding into the display panel, causing bottom incision, resulting in black spots or other display defects.

Description

Technical Field

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

[0002] Organic light-emitting diodes (OLEDs) have many advantages, such as self-illumination, low driving voltage, high luminous efficiency, short response time, high clarity and contrast, near 180° viewing angle, wide operating temperature range, and the ability to achieve flexible displays and large-area full-color displays. They are widely recognized in the industry as the display technology with the greatest development potential. Summary of the Invention

[0003] This application discloses a display panel, a method for manufacturing the same, and a display device.

[0004] In a first aspect, embodiments of this application provide a display panel, comprising: a back panel; a light-emitting layer disposed on one side of the back panel; an organic layer disposed on the side of the light-emitting layer away from the back panel, wherein the orthographic projection of the organic layer on the back panel overlaps with the orthographic projection of the light-emitting layer on the back panel, and the organic layer having a preset thickness along a direction perpendicular to the back panel; a first inorganic layer disposed on the side of the organic layer away from the back panel; and a color filter unit disposed on the side of the first inorganic layer away from the back panel, the color filter unit including a filter portion, wherein the orthographic projection of the organic layer on the back panel is located within the orthographic projection of the filter portion on the back panel.

[0005] Optionally, the preset thickness is less than or equal to 3 micrometers.

[0006] Optionally, the display panel further includes a first planarization layer disposed on the side of the color filter unit away from the back panel; the sum of the thicknesses of the organic layer, the color filter unit, and the first planarization layer in a direction perpendicular to the back panel is greater than 11 micrometers.

[0007] Optionally, the display panel further includes a pixel definition layer disposed on one side of the back panel. The pixel definition layer includes a dam and a first opening. The first opening is located between two adjacent dams. A light-emitting layer and an organic layer are sequentially disposed within the first opening. A first inorganic layer is located on the side of the pixel definition layer away from the back panel and covers the dam and the organic layer. Along a direction parallel to the back panel, there is a first preset distance between the outer contours of the orthographic projections of two adjacent dams on the back panel. The first preset distance is greater than or equal to 21 micrometers.

[0008] Optionally, the color filter unit further includes a first light-shielding part located between two adjacent light-filtering parts; the orthographic projection of the first light-shielding part on the back plate is located within the orthographic projection of the dam on the back plate; along a direction parallel to the back plate, there is a second preset distance between the outer contour of the orthographic projection of the first light-shielding part on the back plate and the outer contour of the orthographic projection of the dam on the back plate.

[0009] Optionally, the second preset distance is greater than or equal to 3 micrometers.

[0010] Optionally, the display panel further includes a touch unit, which is disposed on the side of the color filter unit away from the back panel; the touch unit includes touch traces and a touch film layer, the touch traces are located on the side of the color filter unit away from the back panel, and the touch film layer is disposed on the side of the touch traces away from the back panel and covers the touch traces; the orthographic projection of the touch traces on the back panel is located within the orthographic projection of the first light-shielding part on the back panel.

[0011] Optionally, the display panel further includes a second light-shielding portion, which is disposed on the side of the touch film layer away from the back panel. The orthographic projection of the second light-shielding portion on the back panel covers the orthographic projection of the touch trace on the back panel. A second opening is provided between two adjacent second light-shielding portions, and the orthographic projection of the light-emitting layer on the back panel is located within the orthographic projection of the second opening on the back panel.

[0012] Optionally, along a direction parallel to the back plate, there is a third preset distance between the outer contour of the orthographic projection of the second shading part on the back plate and the outer contour of the orthographic projection of the dam on the back plate, the third preset distance being greater than 5 micrometers.

[0013] Optionally, there may be multiple second openings, and the orthographic projection of at least one second opening onto the back panel may be circular; and / or, along a direction parallel to the back panel, there may be a fourth preset distance between the outer contours of the orthographic projections of two adjacent second openings onto the back panel, the fourth preset distance being greater than or equal to 9 micrometers.

[0014] Optionally, the display panel further includes a second planarization layer disposed on the side of the second light-shielding portion away from the back panel, and the side of the second planarization layer facing the back panel fills the second opening; the refractive index of the second planarization layer is less than the refractive index of the touch film layer.

[0015] Optionally, the material of the touch traces is ferrous metal; and / or, multiple touch traces are arranged to intersect and form multiple grid holes, the shape of the orthographic projection of the grid holes on the back panel is circular, and the orthographic projection of the light-emitting layer on the back panel is located within the orthographic projection of the grid holes on the back panel.

[0016] Optionally, the display panel further includes a second inorganic layer disposed on the side of the pixel definition layer away from the back panel and covering the dam and the light-emitting layer; an organic layer disposed between the second inorganic layer and the first inorganic layer and located within the first opening; the first inorganic layer covers the organic layer and the second inorganic layer.

[0017] Secondly, embodiments of this application provide a display device including the aforementioned display panel.

[0018] Thirdly, embodiments of this application provide a method for manufacturing a display panel, comprising: providing a back plate; fabricating a light-emitting layer on one side of the back plate; fabricating an organic layer on the side of the light-emitting layer away from the back plate, wherein the orthographic projection of the organic layer on the back plate covers the orthographic projection of the light-emitting layer on the back plate, and the organic layer having a predetermined thickness along a direction perpendicular to the back plate; fabricating a first inorganic layer on the side of the organic layer away from the back plate; and fabricating a color filter unit on the side of the first inorganic layer away from the back plate, the color filter unit including a filter portion, wherein the orthographic projection of the organic layer on the back plate is located within the orthographic projection of the filter portion on the back plate.

[0019] The beneficial technical effects of the technical solutions provided in this application include:

[0020] In this embodiment, the orthographic projection of the organic layer on the back plate covers the orthographic projection of the light-emitting layer on the back plate, and the organic layer has a preset thickness along the direction perpendicular to the back plate. When a foreign object falls on the surface of the light-emitting layer, the organic layer can cover the light-emitting layer and the foreign object falling on the light-emitting layer, reduce the step difference at the corresponding position of the foreign object, and ensure that the first inorganic layer and subsequent film layers can be successfully formed. This avoids the bottom incision caused by a large step difference, resulting in black spots or other display defects, insufficient encapsulation capabilities, etc., and ensures the display effect of the display panel.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of a specific example of a display panel provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of a specific example of a display panel provided in an embodiment of this application;

[0025] Figure 3 for Figure 2 The image shown is a top view of a specific example of a display panel provided in this application embodiment;

[0026] Figure 4 This is a schematic diagram of a specific example of a display panel provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of another specific example of a display panel provided in an embodiment of this application;

[0028] Figure 6for Figure 5 The image shown is a top view of a partial structure of another specific example of a display panel provided in this application embodiment;

[0029] Figure 7 A schematic diagram illustrating the structure of yet another specific example of a display panel provided in this application embodiment;

[0030] Figure 8 A schematic diagram of the structure of another specific example of a display panel provided in an embodiment of this application;

[0031] Figure 9 This is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application.

[0032] Figure label:

[0033] 100 - Display panel; 10 - Back panel; 20 - Emissive layer; 30 - Organic layer; 40 - First inorganic layer; 50 - Color filter unit; 51 - Filter section; 52 - First light-shielding section; 60 - First planarization layer; 70 - Pixel definition layer; 71 - Dam; 72 - First opening; 80 - Touch unit; 81 - Touch trace; 82 - Touch film layer; 83 - Mesh hole; 90 - Second light-shielding section; 91 - Second opening; 110 - Second planarization layer; 120 - Second inorganic layer. Detailed Implementation

[0034] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0035] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude implementations of other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by this art. It should be understood that when we say an element is “connected” or “coupled” to another element, the element may be directly connected or coupled to the other element, or it may mean that the element and the other element are connected through an intermediate element. Furthermore, “connected” or “coupled” as used herein may include wireless connection or wireless coupling. The term “and / or” as used herein means at least one of the items defined by the term; for example, “A and / or B” may be implemented as “A,” or as “B,” or as “A and B.”

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0037] POL-Less, or polarization-free technology, is best exemplified by COE (Color Filter On Encapsulation) technology. Currently, COE technology is a key focus for various display companies. COE's low power consumption, high color gamut, and strong controllability give it a significant advantage over circular polarizers. The materials used in COE are the same as those in LCD (Liquid Crystal Display). It primarily utilizes BM (Black Matrix) to prevent light crosstalk, and RGB (Red, Green, Blue) adhesive to filter and optimize the spectrum of OLED (Organic Light Emitting Diode) devices. Considering the glass transition temperature and lifespan of OLED materials, the RGB adhesive must be processed at temperatures below 100°C. OC (Over Coating) is used to smooth the panel surface.

[0038] The COE layer itself, including the BM, is essential for pixel definition. Due to the opacity of the BM, the greater the distance between the OLED light-emitting layer and the BM, the more restrictions are placed on the light emission direction of the OLED, which affects the wide viewing angle application of the OLED. Therefore, the closer the BM is to the OLED, the better. COE Between (i.e., COE between thin-film encapsulation, abbreviated as CBE, where TFE stands for Thin Film Encapsulation) has become a new approach.

[0039] In the existing COE Between TFE packaging design, after the first CVD (Chemical Vapor Deposition) layer (i.e., the first inorganic thin film encapsulation layer) is completed, the BM and RGB filter fabrication processes of the COE layer are directly completed. Then, the IJP (Ink-Jet Printing) layer (i.e., the organic thin film encapsulation layer) and the second CVD layer (i.e., the second inorganic thin film encapsulation layer) are fabricated in reverse flow (referring to the repeated fabrication process). Finally, the FMLOC (Flexible Metal-Layer On Cell Touch) fabrication process is completed. This can broaden the application of COE in large-size touch displays.

[0040] However, in actual production, the problems encountered include the occurrence of IJP reverse flow in this structure, and the appearance of growing dark spots (GDS) in the AA area (display area) after the first CVD layer manufacturing process is completed.

[0041] In actual production, there is a risk of foreign objects intruding into the display panel. Foreign objects can be dust particles or scraped-off materials. Among them, scraped-off materials include PS (Photo Spacer) foreign objects. PS foreign objects are formed when the mask boundary scrapes off the material on the already made film layer during the mask movement process, and the scraped-off material falls into the area where the PS is located.

[0042] During the production process, foreign objects may fall onto the surface of the previous film layer of the display panel. This can create a gap between the foreign object and the surface of the previous film layer, or the width of the foreign object's orthographic projection on the previous film layer along a direction parallel to the previous film layer may be large (e.g., greater than 1.5 micrometers). When the next film layer is produced, it will be broken at the foreign object, resulting in an undercut. This will block the formation of subsequent film layers, causing the first CVD layer and other film layers to be discontinuous. This can lead to insufficient encapsulation capabilities, black spots (i.e., the small black dots mentioned above), or other display defects, affecting the display effect of the display panel.

[0043] The display panel, its manufacturing method, and the display device provided in this application are intended to solve at least one of the above-mentioned technical problems in the prior art.

[0044] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0045] This application provides a display panel, the structural schematic diagram of which is shown below. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, it includes: a back plate 10, a light-emitting layer 20, an organic layer 30, a first inorganic layer 40, and a color filter unit 50. The light-emitting layer 20 is disposed on one side of the back plate 10; the organic layer 30 is disposed on the side of the light-emitting layer 20 away from the back plate 10, and the orthographic projection of the organic layer 30 on the back plate 10 overlaps with the orthographic projection of the light-emitting layer 20 on the back plate 10. The organic layer 30 has a preset thickness H along a direction perpendicular to the back plate 10; the first inorganic layer 40 is disposed on the side of the organic layer 30 away from the back plate 10; the color filter unit 50 is disposed on the side of the first inorganic layer 40 away from the back plate 10, and the color filter unit 50 includes a filter portion 51. The orthographic projection of the organic layer 30 on the back plate 10 is located within the orthographic projection of the filter portion 51 on the back plate 10.

[0046] In this embodiment, the light-emitting layer 20, the organic layer 30, the first inorganic layer 40, and the color filter unit 50 are sequentially disposed on one side of the back plate 10. The back plate 10 supports the light-emitting layer 20, the organic layer 30, the first inorganic layer 40, and the color filter unit 50. The orthographic projection of the organic layer 30 on the back plate 10 covers the orthographic projection of the light-emitting layer 20 on the back plate 10. Along the direction perpendicular to the back plate 10, the organic layer 30 has a preset thickness H. When foreign objects (such as dust particles or scraped-off materials) fall on the surface of the light-emitting layer 20, the organic layer 30 can cover the light-emitting layer 20 and the foreign objects that have fallen on the light-emitting layer 20, reducing the step difference at the corresponding position of the foreign object. This ensures that the first inorganic layer 40 and subsequent film layers can be successfully formed, avoiding bottom incision due to large step differences, which can cause black spots or other display defects, insufficient encapsulation capabilities, and other problems, thus ensuring the display effect of the display panel.

[0047] In this embodiment, the orthographic projection of the organic layer 30 on the back plate 10 is located within the orthographic projection of the filter portion 51 on the back plate 10. The filter portion 51 is correspondingly disposed with the light-emitting layer 20. The light emitted by the light-emitting layer 20 can obtain colored light after passing through the corresponding filter portion 51, thereby realizing color display.

[0048] In addition, in this embodiment, since the light-emitting layer 20, organic layer 30, first inorganic layer 40 and color filter unit 50 are sequentially disposed on one side of the back plate 10, there is no back-and-forth repetition of the same manufacturing process, thus avoiding the problem of reverse flow.

[0049] Optionally, such as Figure 1 As shown in the embodiments of this application, the preset thickness H is less than or equal to 3 micrometers.

[0050] If the preset thickness is greater than 3 micrometers, the organic layer 30 will be thicker along the direction perpendicular to the backplate 10, which will significantly affect the light emission and display effects of the light emitted by the light-emitting layer 20, and may also lead to resource waste and increased production costs. In this embodiment, the preset thickness H is less than or equal to 3 micrometers. The organic layer 30 can effectively cover the light-emitting layer 20 and foreign objects falling on the light-emitting layer 20, reduce the step difference at the corresponding position of the foreign object, and ensure that the first inorganic layer 40 and subsequent film layers can be successfully formed and encapsulated. This avoids the bottom incision caused by the presence of foreign objects, which can lead to a large step difference, block the encapsulation of the first inorganic layer 40, and cause problems such as black spots or other display defects and insufficient encapsulation capacity. This ensures the display effect of the display panel and helps to improve the technical problems of black spots or other display defects.

[0051] Optionally, such as Figure 1 As shown in the embodiments of this application, the preset thickness H is greater than or equal to 1 micrometer.

[0052] If the preset thickness H is less than 1 micrometer, the thickness of the organic layer 30 is too thin, making it difficult to guarantee the coating effect. There may still be a large step difference at the corresponding position of the foreign object, which will cause the first inorganic layer 40 and subsequent film layers to fail to form a film smoothly, resulting in bottom incision, blocking the encapsulation of the first inorganic layer 40, causing black spots or other display defects, insufficient encapsulation capacity and other problems.

[0053] In this embodiment, the preset thickness H is greater than or equal to 1 micrometer. The organic layer 30 has a large thickness, which can effectively cover the light-emitting layer 20 and foreign objects falling on the light-emitting layer 20, reduce the step difference at the corresponding position of the foreign object, and ensure that the first inorganic layer 40 and subsequent film layers can be successfully formed and encapsulated. This avoids the bottom incision caused by the presence of foreign objects, which would block the encapsulation of the first inorganic layer 40, causing black spots or other display defects, insufficient encapsulation capacity, etc. This ensures the display effect of the display panel and helps to improve the technical problems of black spots or other display defects.

[0054] In one specific embodiment of this application, the preset thickness H is 2 micrometers.

[0055] Optionally, in this embodiment, the backplate 10 includes a substrate and a driving circuit disposed on the substrate. The light-emitting layer 20 is electrically connected to the driving circuit, which drives the light-emitting layer 20 to emit light. The driving circuit includes an active layer, a gate insulating layer, a source, a drain, and a gate. It should be noted that the specific structure and arrangement of the backplate 10 are similar to those in the prior art, and will not be described in detail here.

[0056] Optionally, in the embodiments of this application, the organic layer 30 is fabricated by IJP process or exposure and development process, etc.

[0057] Optionally, in this embodiment, the material of the organic layer 30 is an organic material. Optionally, the material of the organic layer 30 can be an organic material suitable for inkjet printing, and is not limited thereto.

[0058] Optionally, in this embodiment, the first inorganic layer 40 is fabricated by CVD (chemical vapor deposition) process.

[0059] Optionally, in this embodiment, the material of the first inorganic layer 40 is an inorganic material. Optionally, the material of the first inorganic layer 40 can be at least one of metal oxides, metal sulfides, and metal nitrides. Optionally, the material of the first inorganic layer 40 can be at least one of silicon oxide, silicon nitride, and silicon oxynitride.

[0060] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the display panel of this embodiment further includes a first planarization layer 60, which is disposed on the side of the color filter unit 50 away from the back plate 10; the sum of the thicknesses of the organic layer 30, the color filter unit 50 and the first planarization layer 60 along the direction perpendicular to the back plate 10 is greater than 11 micrometers.

[0061] In this embodiment, the first flattening layer 60 is used to process the flatness of the surface of the color filter unit 50 away from the back plate 10. The flatness of the surface of the first flattening layer 60 away from the back plate 10 improves the surface flatness of the display panel and facilitates the subsequent film layer production.

[0062] If the sum of the thicknesses of the organic layer 30, the color filter unit 50, and the first planarization layer 60 is less than or equal to 11 micrometers, then the thickness of the three layers is relatively thin. In the actual production process, it is difficult to ensure that the surface of the first planarization layer 60 away from the back panel 10 is flat, which makes it difficult to ensure the surface flatness of the display panel and makes the production process more difficult.

[0063] In this embodiment, the combined thickness of the organic layer 30, the color filter unit 50, and the first planarization layer 60 is greater than 11 micrometers. The relatively thick thickness of the three layers facilitates the production of these layers, reduces the difficulty of production, and ensures the flatness of the surface of the first planarization layer 60 away from the back panel 10, thereby ensuring the surface flatness of the display panel.

[0064] Optionally, in this embodiment, the sum of the thicknesses of the organic layer 30, the color filter unit 50, and the first planarization layer 60 is less than or equal to 18 micrometers. If the sum of the thicknesses is greater than 18 micrometers, it will increase the difficulty of the manufacturing process. In this embodiment, the sum of the thicknesses is less than or equal to 18 micrometers, ensuring that the three film layers—organic layer 30, color filter unit 50, and first planarization layer 60—have sufficient thickness, facilitating the production of the aforementioned film layers, reducing the difficulty of the manufacturing process, and ensuring the flatness of the surface of the first planarization layer 60 on the side away from the back panel 10, thereby ensuring the surface flatness of the display panel.

[0065] In one specific embodiment of this application, the sum of the thicknesses of the organic layer 30, the color filter unit 50, and the first planarization layer 60 is 17 micrometers.

[0066] Optionally, in this embodiment of the application, the sum of the thicknesses of the organic layer 30, the color filter unit 50, and the first planarization layer 60 along the direction perpendicular to the back plate 10 specifically refers to the sum of the thicknesses of the organic layer 30, the filter portion 51, and the first planarization layer 60.

[0067] Optionally, in this embodiment, the material of the first planarization layer 60 is optically clear adhesive (OCA). The leveling and exposure functions of the optical adhesive can better control the overflow problem in the display area.

[0068] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the display panel of this embodiment further includes a pixel definition layer 70, which is disposed on one side of the back panel 10. The pixel definition layer 70 includes a dam 71 and a first opening 72. The first opening 72 is located between two adjacent dams 71. The light-emitting layer 20 and the organic layer 30 are sequentially disposed in the first opening 72. The first inorganic layer 40 is located on the side of the pixel definition layer 70 away from the back panel 10 and covers the dams 71 and the organic layer 30. Along the direction parallel to the back panel 10, there is a first preset distance L1 between the outer contours of the orthographic projection of two adjacent dams 71 on the back panel 10. The first preset distance L1 is greater than or equal to 21 micrometers.

[0069] In this embodiment, a pixel definition layer 70 is disposed on one side of a backplate 10, which supports the pixel definition layer 70. The pixel definition layer 70 includes a dam 71 and a first opening 72. The first opening 72 is located between two adjacent dams 71. A light-emitting layer 20 and an organic layer 30 are sequentially disposed within the first opening 72. The first opening 72 accommodates the light-emitting layer 20 and the organic layer 30. Light-emitting layers 20 emitting different colors can be arranged within different first openings 72 to distinguish pixels of different colors and positions. The organic layer 30 covers at least a portion of the light-emitting layer 20. A first inorganic layer 40 is located on the side of the pixel definition layer 70 away from the backplate 10 and covers the dam 71 and the organic layer 30. Encapsulation is achieved through the organic layer 30 and the first inorganic layer 40.

[0070] In this embodiment, along a direction parallel to the back plate 10, there is a first preset distance L1 between the outer contours of the orthographic projections of two adjacent dams 71 onto the back plate 10. The first preset distance L1 is greater than or equal to 21 micrometers. If the first preset distance L1 is less than 21 micrometers, the width of the first opening 72 is smaller along the direction parallel to the back plate 10, making the display panel prone to defects such as black spots and dark spots, and resulting in a low aperture ratio. In this embodiment, the first preset distance L1 is greater than or equal to 21 micrometers, and the distance between two adjacent dams 71 is larger along the direction parallel to the back plate 10. The width of the first opening 72 is larger, providing more space for arranging the light-emitting layer 20, which helps to improve defects such as black spots and dark spots on the display panel, and can increase the aperture ratio and improve the display effect.

[0071] Optionally, in this embodiment of the application, the light-emitting layer 20 includes an actual light-emitting part and an auxiliary part disposed on at least one side of the actual light-emitting part. The actual light-emitting part is located inside the first opening 72, and at least part of the auxiliary part covers the dam 71 and extends outward to the outside of the first opening 72. The organic layer 30 covers the actual light-emitting part.

[0072] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown in the embodiment of this application, the color filter unit 50 further includes a first light-shielding part 52, which is located between two adjacent light-filtering parts 51; the orthographic projection of the first light-shielding part 52 on the back plate 10 is located within the orthographic projection of the dam 71 on the back plate 10; along the direction parallel to the back plate 10, there is a second preset distance L2 between the outer contour of the orthographic projection of the first light-shielding part 52 on the back plate 10 and the outer contour of the orthographic projection of the dam 71 on the back plate 10.

[0073] In this embodiment, the first light-shielding part 52 is located between two adjacent light-filtering parts 51. The first light-shielding part 52 defines different sub-pixel openings, and each light-filtering part 51 is disposed within a sub-pixel opening to filter the light emitted from the light-emitting layer 20. The orthographic projection of the first light-shielding part 52 on the back plate 10 lies within the orthographic projection of the dam 71 on the back plate 10, preventing the first light-shielding part 52 from blocking or hindering the light emitted from the light-emitting layer 20 located within the first opening 72. Along a direction parallel to the back plate 10, there is a second preset distance L2 between the outer contour of the orthographic projection of the first light-shielding part 52 on the back plate 10 and the outer contour of the orthographic projection of the dam 71 on the back plate 10. This arrangement ensures the alignment accuracy between the first light-shielding part 52 and the dam 71.

[0074] Optionally, in this embodiment of the application, the second preset distance L2 is greater than or equal to 2 micrometers and less than or equal to 8 micrometers.

[0075] If the second preset distance L2 is less than 2 micrometers, it will increase the processing difficulty, making it difficult to align the first light-shielding part 52 with the dam 71. Furthermore, along the direction parallel to the backplate 10, the width of the first light-shielding part 52 is relatively large, resulting in a smaller sub-pixel opening defined by the first light-shielding part 52, which will reduce the aperture ratio. The first light-shielding part 52 will also easily block and obstruct the light emitted from the light-emitting layer 20. If the second preset distance L2 is greater than 8 micrometers, it will increase the requirements for equipment and the accuracy of equipment alignment, increasing the complexity and difficulty of the process, making it difficult to meet industry production requirements.

[0076] In this embodiment, the second preset distance L2 is greater than or equal to 2 micrometers and less than or equal to 8 micrometers, which facilitates the fabrication of the first light-shielding part 52 and the alignment of the first light-shielding part 52 with the dam 71. Furthermore, the sub-pixel opening defined by the first light-shielding part 52 is relatively large, which not only increases the aperture ratio and improves the display effect, but also prevents the first light-shielding part 52 from blocking and hindering the light emitted by the light-emitting layer 20. The requirements for equipment and equipment alignment accuracy are relatively low, the process is relatively simple and easy, and it can meet the industry production requirements.

[0077] Optionally, such as Figure 1 As shown in the embodiment of this application, the second preset distance L2 is greater than or equal to 3 micrometers.

[0078] If the second preset distance L2 is less than 3 micrometers, on the one hand, it will increase the processing difficulty and make it difficult to align the first light-shielding part 52 with the dam 71. On the other hand, along the direction parallel to the back plate 10, the width of the first light-shielding part 52 is large, and the sub-pixel opening defined by the first light-shielding part 52 is small, which will reduce the aperture ratio. The first light-shielding part 52 is also prone to blocking and hindering the light emitted by the light-emitting layer 20.

[0079] In this embodiment, the second preset distance L2 is greater than or equal to 3 micrometers. Along the direction parallel to the back plate 10, the difference between the width of the first light-shielding part 52 and the width of the dam 71 is relatively large, which facilitates the fabrication of the first light-shielding part 52 and the alignment of the first light-shielding part 52 with the dam 71. Furthermore, since the width of the first light-shielding part 52 is small, the sub-pixel opening defined by the first light-shielding part 52 is relatively large, which not only increases the aperture ratio and improves the display effect, but also prevents the first light-shielding part 52 from blocking and hindering the light emitted by the light-emitting layer 20.

[0080] In one specific embodiment of this application, the second preset distance L2 is 3 micrometers.

[0081] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the display panel of this embodiment further includes a touch unit 80, which is disposed on the side of the color filter unit 50 away from the back panel 10. The touch unit 80 includes a touch trace 81 and a touch film layer 82. The touch trace 81 is located on the side of the color filter unit 50 away from the back panel 10, and the touch film layer 82 is disposed on the side of the touch trace 81 away from the back panel 10 and covers the touch trace 81. The orthographic projection of the touch trace 81 on the back panel 10 is located within the orthographic projection of the first light-shielding part 52 on the back panel 10.

[0082] In this embodiment, the touch unit 80 is disposed on the side of the color filter unit 50 away from the back panel 10. The touch function of the display panel is realized by disposing of the touch unit 80. The touch trace 81 is located on the side of the color filter unit 50 away from the back panel 10, and the touch film layer 82 is disposed on the side of the touch trace 81 away from the back panel 10. The touch film layer 82 covers the touch trace 81 to prevent the conductivity of the first light-shielding part 52 from affecting the touch performance of the touch unit 80. The orthographic projection of the touch trace 81 on the back panel 10 is located within the orthographic projection of the first light-shielding part 52 on the back panel 10, preventing the touch trace 81 from blocking or obstructing light.

[0083] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown in this embodiment, the touch unit 80 is disposed on the side of the first planarization layer 60 away from the back plate 10, and the first planarization layer 60 is located between the color filter unit 50 and the touch unit 80. Along the direction perpendicular to the back plate 10, the thicker the first planarization layer 60, the higher the flatness of the side of the first planarization layer 60 away from the back plate 10, and the higher the flatness and touch effect of the touch unit 80.

[0084] In this embodiment, along the direction perpendicular to the back plate 10, the sum of the thicknesses of the organic layer 30, the color filter unit 50, and the first planarization layer 60 is greater than 11 micrometers. By controlling the thickness of each of the above-mentioned film layers, the flatness and touch performance of the touch unit 80 can be guaranteed.

[0085] Optionally, in this embodiment, the touch trace 81 is made of metal. Optionally, in this embodiment, the touch trace 81 is made of conductive metal.

[0086] Optionally, in this embodiment, the material of the touch film layer 82 is silicon nitride (SiN).

[0087] In one optional embodiment of this application, such as Figure 2 , Figure 4 and Figure 7 As shown, the display panel 100 also includes a second light-shielding part 90, which is disposed on the side of the touch film layer 82 away from the back plate 10. The orthographic projection of the second light-shielding part 90 on the back plate 10 covers the orthographic projection of the touch trace 81 on the back plate 10. There is a second opening 91 between two adjacent second light-shielding parts 90, and the orthographic projection of the light-emitting layer 20 on the back plate 10 is located within the orthographic projection of the second opening 91 on the back plate 10.

[0088] In this embodiment, the second light-shielding part 90 is disposed on the side of the touch film layer 82 away from the back plate 10. The orthographic projection of the second light-shielding part 90 on the back plate 10 covers the orthographic projection of the touch trace 81 on the back plate 10. By providing the second light-shielding part 90, the degree of light diffraction can be reduced, the degree of color separation can be reduced, and appearance defects such as uneven display or stripes can be mitigated, thereby improving display quality. A second opening 91 is provided between two adjacent second light-shielding parts 90. The orthographic projection of the light-emitting layer 20 on the back plate 10 is located within the orthographic projection of the second opening 91 on the back plate 10. The second opening 91 is a sub-pixel opening. The light-emitting layer 20 is correspondingly disposed with the sub-pixel opening defined by the second light-shielding part 90 to ensure display effect.

[0089] Optionally, such as Figure 2 As shown in the embodiment of this application, along the direction parallel to the back plate 10, there is a third preset distance L3 between the outer contour of the orthographic projection of the second light-shielding part 90 on the back plate 10 and the outer contour of the orthographic projection of the dam 71 on the back plate 10, and the third preset distance L3 is greater than 5 micrometers.

[0090] If the third preset distance is less than or equal to 5 micrometers, the width of the second light-shielding part 90 is larger along the direction parallel to the back plate 10. This will increase the difficulty of aligning the second light-shielding part 90 with the dam 71, and will also make the sub-pixel opening defined by the second light-shielding part 90 smaller, which will reduce the aperture ratio. The second light-shielding part 90 is more likely to block and hinder light, increasing the degree of optical attenuation.

[0091] In this embodiment, the third preset distance L3 is greater than 5 micrometers. Along the direction parallel to the back plate 10, the difference between the width of the second light-shielding part 90 and the width of the dam 71 is relatively large, which facilitates the fabrication of the second light-shielding part 90 and the alignment of the second light-shielding part 90 with the dam 71. Furthermore, since the width of the second light-shielding part 90 is small, the sub-pixel opening defined by the second light-shielding part 90 is large, which not only increases the aperture ratio and improves the display effect, but also prevents the second light-shielding part 90 from blocking and hindering light. At the same time, it can also ensure the coverage of the touch trace 81 by the second light-shielding part 90 and reduce the impact of the second light-shielding part 90 on optical attenuation (L-Decay).

[0092] Optionally, such as Figure 3 As shown in the embodiment of this application, there are multiple second openings 91, and the shape of the orthographic projection of at least one second opening 91 on the back plate 10 is circular.

[0093] The above settings can control color separation, improve the optical characteristics of the display panel, and ensure the original luminous and display effects of the display panel.

[0094] Optionally, in this embodiment, the display panel includes a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. At least one of the plurality of second openings 91 corresponds to the red sub-pixel R, at least one of the second openings 91 corresponds to the green sub-pixel G, and at least one of the second openings 91 corresponding to the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B, respectively, has a circular orthographic projection on the back panel 10. Of course, in an optional embodiment of this application, the orthographic projection of the plurality of second openings 91 on the back panel 10 may include at least one of the following shapes: circular, elliptical, polygonal, or other shapes close to or similar to a circle, depending on actual needs.

[0095] Optionally, in this embodiment, the first opening 72 and the second opening 91 are correspondingly provided. Optionally, in this embodiment, the shape of the orthographic projection of the first opening 72 on the back plate 10 is the same as the shape of the orthographic projection of the corresponding second opening 91 on the back plate 10.

[0096] Optionally, such as Figure 3 As shown in the embodiment of this application, along the direction parallel to the back plate 10, there is a fourth preset distance L4 between the outer contours of the orthographic projection of two adjacent second openings 91 on the back plate 10, and the fourth preset distance L4 is greater than or equal to 9 micrometers.

[0097] If the fourth preset distance L4 is less than 9 micrometers, the two adjacent second openings 91 will be close together, which will easily cause light crosstalk and reduce the coverage of the second light-shielding part 90 on the touch line 81, increasing the degree of optical attenuation.

[0098] In this embodiment, the fourth preset distance L4 is greater than or equal to 9 micrometers, and the distance between two adjacent second openings 91 is relatively large. This setting not only avoids the problem of light crosstalk, but also ensures the coverage of the touch trace 81 by the second light-shielding part 90, and reduces the impact of the second light-shielding part 90 on optical attenuation (L-Decay).

[0099] Optionally, in the embodiments of this application, the specific values ​​of different fourth preset distances L4 may be different.

[0100] Specifically, such as Figure 2 , Figure 4 and Figure 7 As shown in this embodiment, in the direction perpendicular to the back plate 10, the cross-sectional shape of the second light-shielding part 90 is trapezoidal. When the thickness of the second light-shielding part 90 is 1.6 micrometers, in the direction parallel to the back plate 10, the width between the outer contour of the orthographic projection of the second light-shielding part 90 on the back plate 10 and the outer contour of the orthographic projection of the touch line 81 on the back plate 10 is greater than 2.5 micrometers, and the angle between the side and bottom edge (i.e., the waist and bottom of the trapezoidal structure) of the second light-shielding part 90 is 45°.

[0101] Optionally, such as Figure 4 and Figure 7 As shown, the display panel of this application embodiment further includes a second planarization layer 110, which is disposed on the side of the second light-shielding portion 90 away from the back plate 10, and the side of the second planarization layer 110 facing the back plate 10 is filled with a second opening 91; the refractive index of the second planarization layer 110 is less than the refractive index of the touch film layer 82.

[0102] In this embodiment, the second planarization layer 110 is disposed on the side of the second light-shielding portion 90 away from the back plate 10. The side of the second planarization layer 110 facing the back plate 10 fills the second opening 91. The second planarization layer 110 is used to process the flatness of the surface of the second light-shielding portion 90 away from the back plate 10. The flatness of the surface of the second planarization layer 110 away from the second light-shielding portion 90 improves the surface flatness of the display panel. The refractive index of the second planarization layer 110 is less than the refractive index of the touch film layer 82. The second planarization layer 110 can serve as an optical extraction layer, reducing light refraction, improving the light extraction efficiency at the positive viewing angle, improving the optical characteristics of the display panel, and improving the light emission and display effects of the display panel. It can also reduce the surface reflectivity of the display panel. The lower the surface reflectivity, the lower the overall product reflectivity.

[0103] Optionally, in this embodiment of the application, the refractive index of the touch film layer 82 is 1.8.

[0104] Optionally, in this embodiment of the application, the refractive index of the second planarization layer 110 is less than 1.8.

[0105] This configuration reduces light refraction, improves light emission efficiency at the viewing angle, enhances the optical properties of the display panel, and improves its luminous and display effects. It also reduces the surface reflectivity of the display panel, thereby reducing the overall product reflectivity.

[0106] Optionally, in this embodiment, the material of the second planarization layer 110 is optical adhesive.

[0107] In another optional embodiment of this application, such as Figure 5 and Figure 8 As shown, the material of the touch trace 81 is ferrous metal.

[0108] In this embodiment, the material of the touch trace 81 is ferrous metal. The touch trace 81 can not only transmit touch signals, but also be used as a second light-shielding part, playing the same role as the second light-shielding part (including reducing the degree of light diffraction, reducing the degree of color separation, mitigating appearance defects such as uneven display or stripes, and improving display quality). The touch trace 81 defines the sub-pixel opening, and the light-emitting layer 20 is set correspondingly to the sub-pixel opening defined by the touch trace 81 to ensure the display effect.

[0109] It should be noted that in this embodiment, the touch trace 81 can be used as a second light-shielding part. The touch film layer 82 covers the touch trace 81, eliminating the need for a separate second light-shielding part and a second planarization layer. This reduces the manufacturing process by two steps, simplifying production and improving efficiency. In this embodiment, the touch trace 81 fulfills the characteristics of the second light-shielding part 90 in the above embodiments and achieves the same function as the second light-shielding part 90 in the above embodiments, which will not be elaborated further here.

[0110] Optionally, such as Figure 6 As shown in the embodiment of this application, multiple touch lines 81 are intersected and form multiple mesh holes 83. The orthographic projection of the mesh holes 83 on the back plate 10 is circular, and the orthographic projection of the light-emitting layer 20 on the back plate 10 is located within the orthographic projection of the mesh holes 83 on the back plate 10.

[0111] In this embodiment, the multiple touch traces 81 reduce the resistance of the touch unit 80, meeting the touch stability requirements of the touch display panel. The multiple touch traces 81 are intersected and form multiple grid holes 83. The orthographic projection of the grid holes 83 onto the back panel 10 is circular, which controls color separation, improves the optical characteristics of the display panel, and ensures the original light-emitting and display effects. The orthographic projection of the light-emitting layer 20 onto the back panel 10 lies within the orthographic projection of the grid holes 83 onto the back panel 10. The grid holes 83 are sub-pixel openings defined by the touch traces 81. The corresponding arrangement of the light-emitting layer 20 and the grid holes 83 ensures optimal display performance.

[0112] Optionally, such as Figure 6 As shown in the embodiment of this application, multiple touch lines 81 can be arranged to form a grid hole 83, so that the shape of the orthographic projection of the grid hole 83 on the back plate 10 is infinitely close to a circle.

[0113] Of course, in another optional embodiment of this application, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the display panel 100 also includes a second inorganic layer 120. The second inorganic layer 120 is disposed on the side of the pixel definition layer 70 away from the back panel 10 and covers the dam 71 and the light-emitting layer 20. Specifically, the second inorganic layer 120 is disposed between the light-emitting layer 20 and the organic layer 30, that is, a second inorganic layer 120 is disposed before the organic layer 30 is disposed. The organic layer 30 is disposed between the second inorganic layer 120 and the first inorganic layer 40 and is located within the first opening 72. The first inorganic layer 40 covers the organic layer 30 and the second inorganic layer 120.

[0114] In this embodiment, the display panel 100 further includes a second inorganic layer 120, which covers the dam 71 and the light-emitting layer 20. An organic layer 30 is disposed between the second inorganic layer 120 and the first inorganic layer 40 and is located within the first opening 72. The first inorganic layer 40 covers the organic layer 30 and the second inorganic layer 120. The second inorganic layer 120, the organic layer 30, and the first inorganic layer 40 are sequentially arranged to form an encapsulation unit to achieve the encapsulation function.

[0115] Optionally, such as Figure 7 and Figure 8 As shown in this embodiment, after the light-emitting layer 20 is fabricated, the backplane foreign matter can be covered by an IJP (Integrated Photopolymer Jet) or by coating with an organic material, forming an organic layer 30. Then, the first inorganic layer 40 is fabricated using a CVD process, followed by the completion of the color filter unit fabrication process. This arrangement simplifies the process steps and flow, and improves production efficiency.

[0116] Optionally, in this embodiment, the material of the second inorganic layer 120 is an inorganic material. Optionally, the material of the second inorganic layer 120 can be at least one of metal oxides, metal sulfides, and metal nitrides. Optionally, the material of the second inorganic layer 120 can be at least one of silicon oxide, silicon nitride, and silicon oxynitride.

[0117] Based on the same inventive concept, this application provides a method for manufacturing a display panel, the flowchart of which is shown below. Figure 9 As shown, the method includes:

[0118] S101, Provide a backplate 10;

[0119] S102. A light-emitting layer 20 is fabricated on one side of the back plate 10;

[0120] S103. An organic layer 30 is formed on the side of the light-emitting layer 20 away from the back plate 10. The orthographic projection of the organic layer 30 on the back plate 10 covers the orthographic projection of the light-emitting layer 20 on the back plate 10. The organic layer 30 has a preset thickness H along the direction perpendicular to the back plate 10.

[0121] S104. A first inorganic layer 40 is formed on the side of the organic layer 30 away from the back plate 10;

[0122] S105. A color filter unit 50 is formed on the side of the first inorganic layer 40 away from the back plate 10. The color filter unit 50 includes a filter section 51. The orthographic projection of the organic layer 30 on the back plate 10 is located within the orthographic projection of the filter section 51 on the back plate 10.

[0123] The present application embodiment uses the above method to prepare the display panel.

[0124] In this embodiment, a light-emitting layer 20, an organic layer 30, a first inorganic layer 40, and a color filter unit 50 are sequentially fabricated on one side of a backplate 10. The backplate 10 supports the light-emitting layer 20, the organic layer 30, the first inorganic layer 40, and the color filter unit 50. The orthographic projection of the organic layer 30 on the backplate 10 covers the orthographic projection of the light-emitting layer 20 on the backplate 10. Along a direction perpendicular to the backplate 10, the organic layer 30 has a preset thickness H. When foreign objects (such as dust particles or scraped-off materials) fall onto the surface of the light-emitting layer 20, the organic layer 30 can cover the light-emitting layer 20 and the foreign object, reducing the step difference at the corresponding position of the foreign object. This ensures that the first inorganic layer 40 and subsequent film layers can be successfully formed, avoiding bottom incision due to large step differences, which could cause black spots or other display defects, insufficient encapsulation capabilities, and other problems, thus ensuring the display effect of the display panel.

[0125] In this embodiment, the orthographic projection of the organic layer 30 on the back plate 10 is located within the orthographic projection of the filter portion 51 on the back plate 10. The filter portion 51 is correspondingly disposed with the light-emitting layer 20. The light emitted by the light-emitting layer 20 can obtain colored light after passing through the corresponding filter portion 51, thereby realizing color display.

[0126] In addition, in this embodiment, since the light-emitting layer 20, organic layer 30, first inorganic layer 40 and color filter unit 50 are sequentially fabricated on one side of the back plate 10, there is no back-and-forth repetition of the same manufacturing process, thus avoiding the problem of reverse flow.

[0127] The method for preparing the display panel in this application embodiment can be used to manufacture the display panel in this application embodiment.

[0128] It should be noted that, in the embodiments of this application, the structure of each film layer of the display panel can be patterned by a patterning process to produce each corresponding film layer.

[0129] It should be noted that the above patterning process includes the coating, exposure, development, etching of photoresist, and the removal of part or all of the photoresist.

[0130] The display panel and its fabrication method in this application can be applied to the structural design and process of OLED flat panel display devices, and especially to the structural design and process of large and small OLED COE technology.

[0131] Based on the same inventive concept, this application provides a display device, which includes the above-described display panel 100.

[0132] It should be noted that, since the display device of this application embodiment includes the display panel of this application embodiment, the display device of this application embodiment also has the above-mentioned beneficial effects of the display panel of this application embodiment, which will not be repeated here.

[0133] Specifically, the display device can be any of the following: LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode), MicroLED (Micro Light Emitting Diode), and MiniLED (Mini Light Emitting Diode). The display device can also be any product or component with display function, such as a monitor, television, digital camera, mobile phone, or tablet computer.

[0134] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0135] In this embodiment, the orthographic projection of the organic layer on the back plate covers the orthographic projection of the light-emitting layer on the back plate, and the organic layer has a preset thickness along the direction perpendicular to the back plate. When a foreign object falls on the surface of the light-emitting layer, the organic layer can cover the light-emitting layer and the foreign object falling on the light-emitting layer, reduce the step difference at the corresponding position of the foreign object, and ensure that the first inorganic layer and subsequent film layers can be successfully formed. This avoids the bottom incision caused by a large step difference, resulting in black spots or other display defects, insufficient encapsulation capabilities, etc., and ensures the display effect of the display panel.

[0136] In addition, in this embodiment, since the light-emitting layer, organic layer, first inorganic layer and color filter unit are sequentially arranged on one side of the back plate, there is no back-and-forth repetition of the same manufacturing process, thus avoiding the problem of reverse flow.

[0137] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0138] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0139] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0140] 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0141] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0142] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown sequentially according to the arrows, the order in which these steps are implemented is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of this application, the steps in each process can be executed in other orders as required. Moreover, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on the actual implementation scenario. Some or all of these sub-steps or stages may be executed at the same time or at different times. In scenarios where the execution times are different, the execution order of these sub-steps or stages can be flexibly configured according to requirements, and this application does not limit this.

[0143] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A display panel, characterized in that, include: Back panel; A light-emitting layer is disposed on one side of the back plate; An organic layer is disposed on the side of the light-emitting layer away from the back plate, the orthographic projection of the organic layer on the back plate covers the orthographic projection of the light-emitting layer on the back plate, and the organic layer has a preset thickness along a direction perpendicular to the back plate; The first inorganic layer is disposed on the side of the organic layer away from the back plate; A color filter unit is disposed on the side of the first inorganic layer away from the back plate. The color filter unit includes a filter section, and the orthographic projection of the organic layer on the back plate is located within the orthographic projection of the filter section on the back plate. It also includes a first planarization layer disposed on the side of the color filter unit away from the back plate; Along a direction perpendicular to the backplate, the sum of the thicknesses of the organic layer, the color filter unit, and the first planarization layer is greater than 11 micrometers and less than or equal to 18 micrometers; It also includes a pixel definition layer disposed on one side of the backplate, the pixel definition layer including a dam. The color filter unit further includes a first light-shielding part, which is located between two adjacent light-filtering parts; The orthographic projection of the first light-shielding part on the back plate is located within the orthographic projection of the dam on the back plate; Along a direction parallel to the back plate, there is a second preset distance between the outer contour of the orthographic projection of the first light-shielding part on the back plate and the outer contour of the orthographic projection of the dam on the back plate. The second preset distance is greater than or equal to 3 micrometers and less than or equal to 8 micrometers.

2. The display panel according to claim 1, characterized in that, The preset thickness is less than or equal to 3 micrometers.

3. The display panel according to any one of claims 1 to 2, characterized in that, The pixel definition layer further includes a first opening located between two adjacent dams. The light-emitting layer and the organic layer are sequentially disposed within the first opening. The first inorganic layer is located on the side of the pixel definition layer away from the back plate and covers the dams and the organic layer. Along a direction parallel to the back plate, there is a first preset distance between the outer contours of the orthographic projections of two adjacent dams on the back plate, the first preset distance being greater than or equal to 21 micrometers.

4. The display panel according to claim 1, characterized in that, It also includes a touch unit, which is disposed on the side of the color filter unit away from the back plate; The touch unit includes touch traces and a touch film layer. The touch traces are located on the side of the color filter unit away from the back panel, and the touch film layer is disposed on the side of the touch traces away from the back panel and covers the touch traces. The orthographic projection of the touch trace on the back panel is located within the orthographic projection of the first light-shielding part on the back panel.

5. The display panel according to claim 4, characterized in that, It also includes a second light-shielding part, which is disposed on the side of the touch film layer away from the back plate, and the orthographic projection of the second light-shielding part on the back plate covers the orthographic projection of the touch trace on the back plate. A second opening is provided between two adjacent second light-shielding portions, and the orthographic projection of the light-emitting layer on the back plate is located within the orthographic projection of the second opening on the back plate.

6. The display panel according to claim 5, characterized in that, Along a direction parallel to the back plate, there is a third preset distance between the outer contour of the orthographic projection of the second light-shielding part on the back plate and the outer contour of the orthographic projection of the dam on the back plate, the third preset distance being greater than 5 micrometers.

7. The display panel according to claim 5, characterized in that, The number of the second openings is multiple, and at least one of the second openings has a circular shape in the orthographic projection on the back plate; And / or, Along a direction parallel to the back plate, there is a fourth preset distance between the outer contours of the orthographic projection of two adjacent second openings on the back plate, the fourth preset distance being greater than or equal to 9 micrometers.

8. The display panel according to claim 5, characterized in that, It also includes a second flattening layer, which is disposed on the side of the second light-shielding portion away from the back panel, and the side of the second flattening layer facing the back panel fills the second opening; The refractive index of the second planarization layer is less than that of the touch film layer.

9. The display panel according to claim 4, characterized in that, The material of the touch control wiring is ferrous metal; and / or, Multiple touch traces are intersected and arranged to form multiple grid holes. The orthographic projection of the grid holes on the back panel is circular, and the orthographic projection of the light-emitting layer on the back panel is located within the orthographic projection of the grid holes on the back panel.

10. The display panel according to claim 3, characterized in that, It also includes a second inorganic layer, which is disposed on the side of the pixel definition layer away from the backplate and covers the dam and the light-emitting layer; The organic layer is disposed between the second inorganic layer and the first inorganic layer, and is located within the first opening; The first inorganic layer covers the organic layer and the second inorganic layer.

11. A display device, characterized in that, The display panel includes any one of claims 1 to 10.

12. A method for manufacturing a display panel, used to manufacture the display panel as described in any one of claims 1-10, characterized in that, include: Provide a back panel; A light-emitting layer is formed on one side of the back plate; An organic layer is formed on the side of the light-emitting layer away from the back plate. The orthographic projection of the organic layer on the back plate covers the orthographic projection of the light-emitting layer on the back plate. The organic layer has a predetermined thickness along a direction perpendicular to the back plate. A first inorganic layer is formed on the side of the organic layer away from the back plate; A color filter unit is fabricated on the side of the first inorganic layer away from the back plate. The color filter unit includes a filter section, and the orthographic projection of the organic layer on the back plate is located within the orthographic projection of the filter section on the back plate.

Images