Display panel and display device

Abstract

This invention discloses a display panel and a display device. The display panel includes an array substrate, a pixel definition layer, and a light-emitting functional layer. The pixel definition layer includes multiple pixel openings, and the light-emitting functional layer includes multiple spaced-apart light-emitting functional units, each corresponding to one pixel opening. Each light-emitting functional unit includes a first common portion, a second common portion, and a light-emitting material portion located between the first common portion and the second common portion. This invention patterns the light-emitting material and functional material of the light-emitting functional layer to form spaced-apart light-emitting functional units. Each light-emitting functional unit includes a light-emitting material portion, a first common portion, and a second common portion. This achieves effective light emission while avoiding the overlap of light-emitting material portions, first common portions, and second common portions of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective light-emitting area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, and increase pixel density.

Description

Technical Field

[0001] This invention relates to the field of displays, and more specifically to a display panel and a display device. Background Technology

[0002] In recent years, the performance of display panels has received increasing attention from consumers. Among them, aperture ratio and pixel density are important display indicators. How to improve the aperture ratio and pixel density of display panels is a common research topic for technical personnel.

[0003] Therefore, there is an urgent need for a display panel and display device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The present invention provides a display panel and a display device that can increase the aperture ratio and pixel density of current display panels.

[0005] This invention provides a display panel, comprising:

[0006] Array substrate;

[0007] A pixel definition layer is located on one side of the array substrate, and the pixel definition layer includes a plurality of pixel openings;

[0008] A light-emitting functional layer is located on the same side of the array substrate and the pixel definition layer;

[0009] The light-emitting functional layer includes a plurality of light-emitting functional units spaced apart, each light-emitting functional unit corresponding to a pixel opening. Each light-emitting functional unit includes a light-emitting material portion, a first common portion, and a second common portion, with the light-emitting material portion located between the first common portion and the second common portion.

[0010] In some embodiments, the pixel opening includes a bottom and a sidewall; the light-emitting functional unit includes at least a first portion, the first portion corresponding to the bottom, and the orthographic projection of the first portion on the array substrate coincides with the orthographic projection of the bottom of the pixel opening on the array substrate.

[0011] In some embodiments, the light-emitting functional unit further includes a second portion located around and connected to the first portion; wherein the second portion is located on the sidewall of the pixel opening.

[0012] In some embodiments, the light-emitting functional unit further includes a third part located around and connected to the second part; wherein the orthographic projection of the third part on the pixel definition layer is located outside the pixel opening.

[0013] In some embodiments, the area of ​​the orthographic projection of the light-emitting functional unit on the array substrate is the unit area, and the area of ​​the orthographic projection of the first portion on the array substrate is the first area; wherein, the ratio of the unit area to the first area is 1 to 6 / 5.

[0014] In some embodiments, within the same light-emitting functional unit, the orthogonal projection of the film layer farther from the array substrate onto the array substrate does not exceed the orthogonal projection of the film layer closer to the array substrate onto the array substrate.

[0015] In some embodiments, within the same light-emitting functional unit, in any two adjacent film layers, the outer contour of the surface of the film layer away from the array substrate on the side closest to the array substrate coincides with the outer contour of the surface of the film layer close to the array substrate on the side away from the array substrate; the slope of the corresponding end faces of any two adjacent film layers within the light-emitting functional unit is the same.

[0016] In some embodiments, the display panel includes a cathode layer located on the side of the light-emitting functional layer away from the array substrate; wherein the cathode layer covers the end face of the light-emitting functional unit and is in direct contact with the pixel definition layer.

[0017] In some embodiments, the pixel opening includes a bottom and a sidewall; the orthographic projection of any film layer within the light-emitting functional unit onto the array substrate covers the orthographic projection of the bottom of the pixel opening onto the array substrate.

[0018] In some embodiments, the first common portion is located on the side of the light-emitting material portion near the array substrate, and the first common portion includes any one or a combination of electron blocking portion, hole transport portion and hole injection portion; the second common portion includes any one or a combination of hole blocking portion, electron transport portion and electron injection portion.

[0019] The present invention also provides a display device, including a display panel as described in any of the above.

[0020] The beneficial effects of this invention are as follows: By patterning the luminescent material and functional material of the luminescent functional layer, this invention forms luminescent functional units arranged at intervals. Each luminescent functional unit includes a luminescent material part, a first common part, and a second common part. While achieving effective light emission, this invention avoids the overlap of luminescent material parts, the first common part, and the second common part of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective light-emitting area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, increase pixel density, and improve the display effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the first structure of the display panel provided in the embodiment of the present invention;

[0023] Figure 2 This is a top view schematic diagram of the second structure of the display panel provided in the embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the third structure of the display panel provided in the embodiment of the present invention;

[0025] Figure 4 This is a top view schematic diagram of the fourth structure of the display panel provided in the embodiments of the present invention;

[0026] Figure 5 This is a flowchart of the steps in the method for manufacturing a display panel provided in an embodiment of the present invention;

[0027] Figures 6A to 6B This is a flowchart illustrating the manufacturing method of the display panel provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the display device provided in an embodiment of the present invention. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0030] In recent years, the performance of display panels has received increasing attention from consumers. Among them, aperture ratio and pixel density are important display indicators. How to improve the aperture ratio and pixel density of display panels is a common research topic for technical personnel.

[0031] Please see Figures 1 to 4 This invention provides a display panel 100, comprising:

[0032] Array substrate 200;

[0033] A pixel definition layer 300 is located on one side of the array substrate 200, and the pixel definition layer 300 includes a plurality of pixel openings 310;

[0034] The light-emitting functional layer 400 is located on the same side of the array substrate 200 and the pixel definition layer 300;

[0035] The light-emitting functional layer 400 includes a plurality of light-emitting functional units 500 spaced apart, one light-emitting functional unit 500 corresponding to one pixel opening 310. The light-emitting functional unit 500 includes a light-emitting material part 440, a first common part 401 and a second common part 402, and the light-emitting material part 440 is located between the first common part 401 and the second common part 402.

[0036] This invention patterns the luminescent material and functional material of the luminescent functional layer to form spaced luminescent functional units. Each luminescent functional unit includes a luminescent material portion, a first common portion, and a second common portion. This achieves effective light emission while avoiding the overlap of luminescent material portions, the first common portion, and the second common portion of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective luminescent area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, increase pixel density, and improve the display effect.

[0037] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0038] In this embodiment, please refer to Figure 1 , Figure 2 The display panel 100 includes an array substrate 200, a pixel definition layer 300 located on one side of the array substrate 200, and a light-emitting functional layer 400. The pixel definition layer 300 includes a plurality of pixel openings 310, and the light-emitting functional layer 400 includes a plurality of spaced light-emitting functional units 500, with one light-emitting functional unit 500 corresponding to one pixel opening 310. The light-emitting functional unit 500 includes a light-emitting material portion 440, a first common portion 401, and a second common portion 402, with the light-emitting material portion 440 located between the first common portion 401 and the second common portion 402.

[0039] The first common part 401 and the second common part 402 are used to improve the working performance of electrons or holes.

[0040] The second common section 402 may include any one or a combination of the hole blocking section 450, the electron transport section 460 and the electron injection section 470, and the first common section 401 may include any one or a combination of the electron blocking section 430, the hole transport section 420 and the hole injection section 410.

[0041] The hole blocking portion 450 is located on the side of the light-emitting material portion 440 away from the array substrate 200; the electron transport portion 460 is located on the side of the hole blocking portion 450 away from the array substrate 200; and the electron injection portion 470 is located on the side of the electron transport portion 460 away from the array substrate 200. The electron blocking portion 430 is located on the side of the light-emitting material portion 440 close to the array substrate 200; the hole transport portion 420 is located on the side of the electron blocking portion 430 close to the array substrate 200; and the hole injection portion 410 is located on the side of the hole transport portion 420 close to the array substrate 200.

[0042] After patterning, the light-emitting functional units 500 are spaced apart, and the continuously arranged light-emitting functional materials are transformed into a first common part 401, a second common part 402 and a light-emitting material part 440 arranged at intervals. This reduces the overlapping influence between functional materials of different light-emitting colors and light-emitting functional materials, eliminates the risk of color mixing, allows for a larger effective light-emitting area of ​​a single pixel, increases the aperture ratio, shortens the distance between pixels, increases pixel density, and improves the display effect.

[0043] In some embodiments, please refer to Figure 1 , Figure 2 The pixel opening 310 includes a bottom 311 and a sidewall 312. The light-emitting functional unit 500 includes at least a first part 510. The orthographic projection of the first part 510 on the array substrate 200 coincides with the orthographic projection of the bottom 311 of the pixel opening 310 on the array substrate 200.

[0044] The first portion 510 of the light-emitting functional unit 500 corresponds to the bottom 311 of the pixel opening 310, and the patterning precision is high, which can improve the patterning degree of the light-emitting functional unit 500. The first portion 510 is confined to the bottom 311 of the pixel opening 310. The first portion 510 is adjacent to the pixel definition layer 300. The bottom 311 of the pixel opening 310 exposes the anode layer 810 of the display panel 100. The first portion 510 is electrically connected to the anode layer 810 through the bottom 311 of the pixel opening 310. Therefore, the first portion 510 is the effective light-emitting part of the light-emitting functional unit 500. The spaced light-emitting functional units 500 achieve effective light emission while avoiding the overlap of light-emitting materials of different colors, eliminating the risk of color mixing. Therefore, the effective light-emitting area of ​​a single pixel can be increased, the aperture ratio can be improved, and the lifespan can be extended. Precise patterning can make the ineffective light-emitting area of ​​a single pixel smaller, shorten the distance between pixels, increase pixel density, and improve the display effect.

[0045] In some embodiments, please refer to Figure 1 , Figure 2 The display panel 100 includes an anode layer 810 located between the array substrate 200 and the pixel definition layer 300, and a cathode layer 820 located on the side of the light-emitting functional layer 400 away from the array substrate 200. The pixel opening 310 exposes the anode layer 810, and the light-emitting functional unit 500 is electrically connected to the anode layer 810 through the pixel opening 310. In some embodiments, please refer to... Figure 1 , Figure 2 The light-emitting functional unit 500 further includes a second part 520 located around and connected to the first part 510; wherein the second part 520 is located on the sidewall 312 of the pixel opening 310.

[0046] The patterning precision can be reduced to form the second part 520 and the first part 510. At the same time, the second part 520 and the first part 510 can ensure that the bottom 311 of the pixel opening 310 is covered by the light-emitting functional unit 500, thus ensuring the effective light-emitting area.

[0047] In some embodiments, please refer to Figure 1 , Figure 2 The light-emitting functional unit 500 further includes a third part 530 located around and connected to the second part 520; wherein the orthographic projection of the third part 530 on the pixel definition layer 300 is located outside the pixel opening 310.

[0048] The area of ​​the light-emitting functional unit 500 needs to be greater than or equal to the area of ​​the bottom 311 of the pixel opening 310. This is to allow for a process allowance for complete coverage, and to avoid the light-emitting functional unit 500 not completely covering the bottom 311 of the pixel opening 310 due to insufficient process precision. This prevents a reduction in the effective light-emitting area and ensures the light-emitting opening ratio. At the same time, the cathode layer 820 can hold down more of the light-emitting functional units 500, reducing the risk of slippage failure of the light-emitting functional units 500 and ensuring the display effect.

[0049] In some embodiments, the area of ​​the orthographic projection of the light-emitting functional unit 500 on the array substrate 200 is the unit area, and the area of ​​the orthographic projection of the first portion 510 on the array substrate 200 is the first area; wherein the ratio of the unit area to the first area is 1 to 6 / 5.

[0050] The area occupied by the second part 520 and the third part 530 should not be too large, otherwise the pixel pitch will become smaller and the pixel density will be affected.

[0051] In some embodiments, please refer to Figure 1 Within the same light-emitting functional unit 500, the orthogonal projection of the film layer away from the array substrate 200 onto the array substrate 200 does not exceed the orthogonal projection of the film layer close to the array substrate 200 onto the array substrate 200.

[0052] Within the same light-emitting functional unit 500, the end face of the film layer that is further away from the array substrate 200 tends to be inward. This can prevent the upper film layer from covering the end face of the lower multiple film layers, avoid the risk of abnormal film layer connection, ensure the performance of each film layer in the first common part 401 and the second common part 402, and improve the display effect.

[0053] In some embodiments, please refer to Figure 1 Within the same light-emitting functional unit 500, in any two adjacent film layers, the outer contour of the surface of the film layer away from the array substrate 200 on the side close to the array substrate 200 coincides with the outer contour of the surface of the film layer close to the array substrate 200 on the side away from the array substrate 200, and the slope of the corresponding end face of each film layer in the light-emitting functional unit 500 is the same.

[0054] For example Figure 1In the example of electron transport section 460 and electron injection section 470, electron injection section 470 is a film layer away from the array substrate 200, and electron transport section 460 is a film layer close to the array substrate 200. The outer contour of the surface of electron injection section 470 close to the array substrate 200 coincides with the surface of electron transport section 460 away from the array substrate 200, and the slope of the end face of electron transport section 460 is the same as the slope of the end face of electron injection section 470.

[0055] The light-emitting functional units 500 of the same color can be formed using a photomask. The end face of each light-emitting functional unit 500 formed using the photomask is also a plane. The light-emitting functional layer 400 is patterned to form the light-emitting functional units 500 spaced apart. At the same time, the performance of each film layer in the first common part 401 and the second common part 402 can be guaranteed, and the display effect can be improved. The light-emitting functional units 500 of each light-emitting color can be formed separately or uniformly. No specific limitation is made here.

[0056] In some embodiments, please refer to Figure 3 The slope angle θ corresponding to the end face of the light-emitting functional unit 500 is between 20 and 90 degrees. If the slope is too small, the lateral stretch of the light-emitting functional unit 500 will be too long, and the size difference between the upper and lower film layers will be too large, which is not conducive to the uniformity of the performance of the film layers in the first common part 401 and the second common part 402; the slope should not be too large, on the one hand, the process cannot be realized, and on the other hand, it is easy to cause abnormal overlap between the upper and lower film layers.

[0057] In some embodiments, the second portion 520 and the third portion 530 extend to a length of 0 micrometers to 10 micrometers.

[0058] In some embodiments, please refer to Figure 1 , Figure 2 The display panel 100 includes an anode layer 810 located between the array substrate 200 and the pixel definition layer 300, and a cathode layer 820 located on the side of the light-emitting functional layer 400 away from the array substrate 200. The pixel opening 310 exposes the anode layer 810, and the light-emitting functional unit 500 is electrically connected to the anode layer 810 through the pixel opening 310. The cathode layer 820 covers the end face of the light-emitting functional unit 500 and is in direct contact with the pixel definition layer 300.

[0059] The cathode layer 820 can be left unpatterned and can be set as a single layer as a common electrode. After patterning, the light-emitting functional units 500 are spaced apart, and the cathode layer 820 covers the end face of the light-emitting functional unit 500 and is in direct contact with the pixel definition layer 300, which increases the contact area between the cathode layer 820 and the light-emitting functional unit 500 and the pixel definition layer 300, and improves the adhesion of the cathode layer 820.

[0060] In some embodiments, please refer to Figure 1 The pixel opening 310 includes a bottom 311 and a sidewall 312; the orthographic projection of any film layer in the light-emitting functional unit 500 onto the array substrate 200 covers the orthographic projection of the bottom 311 of the pixel opening 310 onto the array substrate 200.

[0061] The first part 510 corresponds to the effective light-emitting area. In the top view of the display panel 100, any film layer in the light-emitting functional unit 500 needs to cover the bottom 311 of the pixel opening 310, so as to ensure that each film layer of the first common part 401 and the second common part 402 can perform its own film layer performance, ensure the effective light-emitting area, avoid the risk of the effective light-emitting area being reduced due to the film layer area being too small or tolerance reasons, and improve the display effect.

[0062] In some embodiments, please refer to Figure 3 The light-emitting functional units 500 emit light in red, green, and blue colors; wherein the thickness of the light-emitting functional unit 500 emitting blue light is greater than the thickness of the light-emitting functional unit 500 emitting red light, and the thickness of the light-emitting functional unit 500 emitting red light is greater than the thickness of the light-emitting functional unit 500 emitting green light.

[0063] In the diagram, R represents red, G represents green, and B represents blue. Based on the different luminous characteristics of each color, the thickness of the luminous functional units 500 for each color is set differently to balance the overall luminous brightness and lifespan. For example, the lifespan of the blue luminous material section 440 is shorter than that of the red and green sections, so the thickness of the blue luminous material section 440 is increased to balance the luminous lifespans of the three colors. Conversely, since the human eye perceives green more strongly, the thickness of the green luminous material section 440 can be appropriately reduced to save materials and reduce costs.

[0064] In some embodiments, the arrangement of different light-emitting colors by the light-emitting functional unit 500 is not specifically limited, and can be Real RGB or SPR (Sub Pixel Rendering), etc. Please refer to [link / reference]. Figure 4 Here, we will only take the SPR permutation as an example.

[0065] In some embodiments, please refer to Figure 4 The light-emitting functional units 500 emit light in colors including red, green, and blue; wherein, the area of ​​the first portion 510 of the light-emitting functional unit 500 emitting blue light on the array substrate 200 is larger than the area of ​​the first portion 510 of the light-emitting functional unit 500 emitting red light on the array substrate 200, and the area of ​​the first portion 510 of the light-emitting functional unit 500 emitting red light on the array substrate 200 is larger than the area of ​​the first portion 510 of the light-emitting functional unit 500 emitting green light on the array substrate 200.

[0066] Based on the different luminous characteristics of different colors, the effective luminous area of ​​the luminous functional units 500 for different colors is set differently to balance the overall luminous brightness and luminous lifespan. For example, the lifespan of the blue luminous material part 440 is shorter than that of red and green, so the area of ​​the first blue part 510 is increased to balance the luminous lifespan of the three colors (red, green, and blue). For example, the human eye perceives green more strongly, so the area of ​​the first green part 510 can be appropriately reduced to save materials and reduce costs.

[0067] In some embodiments, please refer to Figure 1 , Figure 2 The display panel 100 further includes an optical functional layer 600 located on the side of the cathode layer 820 away from the pixel definition layer 300, and an encapsulation layer 700 located on the side of the optical functional layer 600 away from the cathode layer 820; wherein the cathode layer 820, the optical functional layer 600 and the encapsulation layer 700 are all integral layers.

[0068] The optical functional layer 600 may include a photoextraction layer 610 and an optical modulation layer 620. The encapsulation layer 700 may include two inorganic encapsulation layers 710 and an organic encapsulation layer 720 located between the two inorganic encapsulation layers 710. The cathode layer 820, the optical functional layer 600, and the encapsulation layer 700 are all integrally formed, improving the flatness of the film.

[0069] In some embodiments, the display panel 100 includes a central display area and an edge display area. The arrangement density of the light-emitting functional units 500 in the central display area is greater than the arrangement density of the light-emitting functional units 500 in the edge display area. The ratio of the first area of ​​the light-emitting functional units 500 in the central display area to the unit area is greater than the ratio of the first area of ​​the light-emitting functional units 500 in the edge display area to the unit area.

[0070] The ratio of the first area to the unit area of ​​the central display area is relatively large, which reduces the proportion of the second part 520 and the third part 530, reduces the ineffective light-emitting area, and helps to increase the pixel density of the central display area. By utilizing the characteristic that human vision focuses on the central display area, the viewing effect is improved.

[0071] In some embodiments, the display panel 100 includes an under-screen display area and a main display area located around the under-screen display area. The arrangement density of the light-emitting functional units 500 in the main display area is greater than the arrangement density of the light-emitting functional units 500 in the under-screen display area. The ratio of the first area to the unit area of ​​the light-emitting functional units 500 in the under-screen display area is greater than the ratio of the first area to the unit area of ​​the light-emitting functional units 500 in the main display area.

[0072] The under-display area requires higher light transmittance. Reducing the pixel density of the under-display area can improve its light transmittance and increase the proportion of the effective light-emitting area. This reduces the proportion of the non-light-emitting and non-transparent second part 520 and third part 530, thus improving the light transmittance of the under-display area without affecting the light-emitting area.

[0073] In some embodiments, please refer to Figure 1 The array substrate 200 includes a substrate 210, an active layer 220 on the substrate 210, a first insulating layer 230 on the active layer 220, a gate layer 240 on the first insulating layer 230, a second insulating layer 250 on the gate layer 240, a source-drain layer 260 on the second insulating layer 250, and a third insulating layer 270 on the source-drain layer 260.

[0074] This invention patterns the luminescent material and functional material of the luminescent functional layer to form spaced luminescent functional units. Each luminescent functional unit includes a luminescent material portion, a first common portion, and a second common portion. This achieves effective light emission while avoiding the overlap of luminescent material portions, the first common portion, and the second common portion of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective luminescent area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, increase pixel density, and improve the display effect.

[0075] Please see Figure 5 This invention also provides a method for manufacturing a display panel 100, comprising:

[0076] S100, Provide an array substrate 200;

[0077] S200, An anode layer 810 electrically connected to the array substrate 200 is formed on one side of the array substrate 200;

[0078] S300, a pixel definition layer 300 including a plurality of pixel openings 310 is formed on the side of the anode layer 810 away from the array substrate 200, the pixel openings 310 exposing the anode layer 810;

[0079] S400, A light-emitting functional material layer 4011 is formed on the pixel definition layer 300;

[0080] S500, The light-emitting functional material layer 4011 is patterned to form a first common portion 401, a second common portion 402 and a light-emitting material portion 440 located between the first common portion 401 and the second common portion 402, so as to form light-emitting functional units 500 arranged at intervals.

[0081] This invention patterns the luminescent material and functional material of the luminescent functional layer to form spaced luminescent functional units. Each luminescent functional unit includes a luminescent material portion, a first common portion, and a second common portion. This achieves effective light emission while avoiding the overlap of luminescent material portions, the first common portion, and the second common portion of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective luminescent area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, increase pixel density, and improve the display effect.

[0082] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0083] In this embodiment, the method for manufacturing the display panel 100 includes:

[0084] S100, Provides an array substrate 200, please refer to Figure 6A .

[0085] In some embodiments, the array substrate 200 includes a substrate 210, an active layer 220 on the substrate 210, a first insulating layer 230 on the active layer 220, a gate layer 240 on the first insulating layer 230, a second insulating layer 250 on the gate layer 240, a source-drain layer 260 on the second insulating layer 250, and a third insulating layer 270 on the source-drain layer 260.

[0086] S200: An anode layer 810 electrically connected to the array substrate 200 is formed on one side of the array substrate 200. (See also...) Figure 6A .

[0087] In some embodiments, the anode layer 810 is electrically connected to the source / drain layer 260 of the array substrate 200.

[0088] S300: A pixel definition layer 300, including a plurality of pixel openings 310, is formed on the side of the anode layer 810 away from the array substrate 200. The pixel openings 310 expose the anode layer 810. (See also...) Figure 6A .

[0089] In some embodiments, the anode layer 810 includes a plurality of anode units, and one anode unit corresponds to one pixel opening 310.

[0090] S400, A light-emitting functional material layer 4011 is formed on the pixel definition layer 300. Please refer to [link / reference]. Figure 6A .

[0091] In some embodiments, step S400 includes:

[0092] S410. Using a common mask and vapor deposition process, a light-emitting functional material layer 4011 is formed on the pixel definition layer 300.

[0093] Large-size 8.5-generation and above lines do not use RGB vapor deposition; instead, they all use white light + color film to achieve full color. There is no corresponding fine metal mask vapor deposition technology for large-generation lines. This application adopts full-surface vapor deposition followed by patterning. Common mask and vapor deposition process can be used, mask cost is low, process is simple, and production cost is reduced.

[0094] In some embodiments, please refer to Figure 6A The light-emitting functional material layer 4011 includes a hole injection material layer 4101 near the array substrate 200, a hole transport material layer 4201 on the side of the hole injection material layer 4101 away from the array substrate 200, an electron blocking material layer 4301 on the side of the hole transport material layer 4201 away from the array substrate 200, a light-emitting material layer 4401 on the side of the electron blocking material layer 4301 away from the array substrate 200, a hole blocking material layer 4501 on the side of the light-emitting material layer 4401 away from the array substrate 200, an electron transport material layer 4601 on the side of the hole blocking material layer 4501 away from the array substrate 200, and an electron injection material layer 4701 on the side of the electron transport material layer 4601 away from the array substrate 200.

[0095] In some embodiments, the luminescent material layer 4401 may include any one of the three luminescent materials: red, green, and blue. The different colored materials may be fabricated in steps.

[0096] S500: The light-emitting functional material layer 4011 is patterned to form a first common portion 401, a second common portion 402, and a light-emitting material portion 440 located between the first common portion 401 and the second common portion 402, thereby forming spaced light-emitting functional units 500. Please refer to [link to relevant documentation]. Figure 6B .

[0097] In some embodiments, the patterning method in step S500 can be any one of photolithography patterning, laser patterning, wet etching, or dry etching, without any specific limitation.

[0098] In some embodiments, the light-emitting functional unit 500 further includes a second portion 520 located around and connected to the first portion 510, and a third portion 530 located around and connected to the second portion 520; wherein the orthographic projection of the second portion 520 on the pixel definition layer 300 is located within the sidewall 312 of the pixel opening 310, and the orthographic projection of the third portion 530 on the pixel definition layer 300 is located outside the pixel opening 310.

[0099] In some embodiments, the area of ​​the orthographic projection of the light-emitting functional unit 500 on the array substrate 200 is the unit area, and the area of ​​the orthographic projection of the first portion 510 on the array substrate 200 is the first area; wherein the ratio of the unit area to the first area is 1 to 6 / 5.

[0100] In some embodiments, please refer to Figure 1 Within the same light-emitting functional unit 500, the orthogonal projection of the film layer away from the array substrate 200 onto the array substrate 200 does not exceed the orthogonal projection of the film layer close to the array substrate 200 onto the array substrate 200.

[0101] In some embodiments, please refer to Figure 1 The corresponding end faces of each film layer within the light-emitting functional unit 500 are flush, and the slope of the corresponding end faces of each film layer within the light-emitting functional unit 500 is the same. Light-emitting functional units 500 of the same color can be formed using a single photomask. The end faces of each light-emitting functional unit 500 formed using the photomask are also flat. The light-emitting functional layer 400 can be patterned to form spaced-apart light-emitting functional units 500, which can be formed separately for each color or uniformly; no specific limitation is made here.

[0102] In some embodiments, please refer to Figure 1The pixel opening 310 includes a bottom 311 and a sidewall 312; the orthographic projection of any film layer in the light-emitting functional unit 500 onto the array substrate 200 covers the orthographic projection of the bottom 311 of the pixel opening 310 onto the array substrate 200.

[0103] In some embodiments, the method of manufacturing the display panel 100 further includes:

[0104] S600, a cathode layer 820, an optical functional layer 600, and an encapsulation layer 700 are sequentially formed on the light-emitting functional layer 400, covering the entire layer. Please refer to [link / reference]. Figure 1 .

[0105] In some embodiments, the display panel 100 further includes an optical functional layer 600 located on the side of the cathode layer 820 away from the pixel definition layer 300, and an encapsulation layer 700 located on the side of the optical functional layer 600 away from the cathode layer 820; wherein the cathode layer 820, the optical functional layer 600 and the encapsulation layer 700 are all integral layers.

[0106] The optical functional layer 600 may include a photoextraction layer 610 and an optical modulation layer 620. The encapsulation layer 700 may include two inorganic layers and an organic layer located between the two inorganic layers. The cathode layer 820, the optical functional layer 600, and the encapsulation layer 700 are all integrally formed layers, improving the flatness of the film.

[0107] This invention patterns the luminescent material and functional material of the luminescent functional layer to form spaced luminescent functional units. Each luminescent functional unit includes a luminescent material portion, a first common portion, and a second common portion. This achieves effective light emission while avoiding the overlap of luminescent material portions, the first common portion, and the second common portion of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective luminescent area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, increase pixel density, and improve the display effect.

[0108] Please see Figure 7 The present invention also provides a display device 10, including a display panel 100 as described above.

[0109] For the specific structure of the display panel 100, please refer to any of the above-described embodiments of the display panel 100 and the accompanying drawings, which will not be repeated here.

[0110] In this embodiment, the display device 10 further includes a device body 20, which is integrated with the display panel 100.

[0111] In this embodiment, the main body 20 of the device may include a middle frame, frame adhesive, external components, etc., and the display device 10 may be a display terminal such as a mobile phone, tablet, or television, which is not limited here.

[0112] This invention discloses a display panel and a display device. The display panel includes an array substrate, a pixel definition layer, and a light-emitting functional layer. The pixel definition layer includes multiple pixel openings, and the light-emitting functional layer includes multiple spaced-apart light-emitting functional units, each corresponding to one pixel opening. Each light-emitting functional unit includes a first common portion, a second common portion, and a light-emitting material portion located between the first common portion and the second common portion. This invention patterns the light-emitting material and functional material of the light-emitting functional layer to form spaced-apart light-emitting functional units. Each light-emitting functional unit includes a light-emitting material portion, a first common portion, and a second common portion. This achieves effective light emission while avoiding the overlap of light-emitting material portions, first common portions, and second common portions of different colors, eliminating the risk of color mixing. Therefore, it can increase the effective light-emitting area of ​​a single pixel, improve the aperture ratio, shorten the distance between pixels, and increase pixel density.

[0113] The above provides a detailed description of a display panel and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display panel, characterized in that, include: Array substrate; A pixel definition layer is located on one side of the array substrate. The pixel definition layer includes a plurality of pixel openings, and the pixel openings include a bottom and a sidewall. A light-emitting functional layer is located on the same side of the array substrate and the pixel definition layer. The light-emitting functional layer includes a plurality of spaced light-emitting functional units. Each light-emitting functional unit includes at least a first part. The orthographic projection of the first part on the array substrate coincides with the orthographic projection of the bottom of the pixel opening on the array substrate. The area of ​​the orthographic projection of the light-emitting functional unit on the array substrate is the unit area, and the area of ​​the orthographic projection of the first part on the array substrate is the first area. Wherein, one of the light-emitting functional units corresponds to one of the pixel openings, and the light-emitting functional unit includes a light-emitting material part, a first common part and a second common part, wherein the light-emitting material part is located between the first common part and the second common part; The display panel includes a central display area and an edge display area. The arrangement density of the light-emitting functional units in the central display area is greater than that in the edge display area. The ratio of the first area of ​​the light-emitting functional units in the central display area to the unit area is greater than that in the edge display area.

2. The display panel according to claim 1, characterized in that, The light-emitting functional unit also includes a second part located on the periphery of the first part and connected to the first part; The second part is located on the sidewall of the pixel opening.

3. The display panel according to claim 2, characterized in that, The light-emitting functional unit also includes a third part located on the periphery of the second part and connected to the second part; The orthographic projection of the third part onto the pixel definition layer is located outside the pixel opening.

4. The display panel according to claim 1, characterized in that, The ratio of the unit area to the first area is 1 to 6 / 5.

5. The display panel according to claim 1, characterized in that, Within the same light-emitting functional unit, the orthogonal projection of the film layer farther from the array substrate onto the array substrate does not exceed the orthogonal projection of the film layer closer to the array substrate onto the array substrate.

6. The display panel according to claim 5, characterized in that, Within the same light-emitting functional unit, in any two adjacent film layers, the outer contour of the surface of the film layer away from the array substrate on the side closest to the array substrate coincides with the outer contour of the surface of the film layer close to the array substrate on the side away from the array substrate. The slope of the corresponding end faces of any two adjacent film layers within the light-emitting functional unit is the same.

7. The display panel according to claim 1, characterized in that, The display panel includes a cathode layer located on the side of the light-emitting functional layer away from the array substrate; The cathode layer covers the end face of the light-emitting functional unit and is in direct contact with the pixel definition layer.

8. The display panel according to claim 1, characterized in that, The orthographic projection of any film layer within the light-emitting functional unit onto the array substrate covers the orthographic projection of the bottom of the pixel opening onto the array substrate.

9. The display panel according to claim 1, characterized in that, The first common portion is located on the side of the light-emitting material portion near the array substrate, and the first common portion includes any one or a combination of electron blocking portion, hole transport portion and hole injection portion; The second common section includes any one or a combination of a hole blocking section, an electron transport section, and an electron injection section.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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