Display panels and display devices

Abstract

The present application discloses a display panel and a display device, the display panel including a substrate, a pixel definition layer located on the substrate, and a light-shielding portion, the pixel definition layer including an isolation portion and a pixel opening surrounded by the isolation portion and having an emission unit provided therein, the light-shielding portion being located on a side of the isolation portion away from the substrate and extending to the pixel opening, and the orthogonal projection of the light-shielding portion on the substrate and the orthogonal projection of the emission unit on the substrate being overlapped such that the light-shielding portion shields a surface of some of the emission units away from the substrate.

Description

Technical Field

[0001] This application claims the priority of Chinese Patent Application No. 202211350426.0, titled "Display Panel and Display Device", filed on October 31, 2022, and all the contents of the said application are incorporated herein by reference.

[0002] The present invention relates to the field of displays, and more specifically to display panels and display devices.

Background Art

[0003] Flat display panels such as liquid crystal display (LCD) panels, organic light emitting diode display (OLED) panels, and display panels using light emitting diode (LED) devices have advantages such as high image quality, low power consumption, thin body, and wide application range. Therefore, they are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and have become the main display panels in display devices.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An OLED panel generally includes a plurality of light emitting units, and there is a risk of light mixing between adjacent light emitting units, which affects the display effect of the display panel.

[0005] Embodiments of the present application provide a display panel and a display device for improving the display effect of the display panel.

Means for Solving the Problems

[0006] An embodiment of the first aspect of the present application includes a substrate, and a pixel definition layer located on the substrate, the pixel definition layer including an isolation part and a pixel aperture formed and surrounded by the isolation part.Isolation section The side away from the substrate to They are stacked and provided ru Partition column including auxiliary section and light-shielding section And, including, each pixel aperture has a light-emitting unit inside, Orthographic projection on the substrate of the auxiliary part teeth, Located within the orthographic projection of the light-shielding substrate do, Provides a display panel.

[0007] A second embodiment of this application provides a display device including a display panel of any of the above embodiments.

[0008] In the display panel according to the embodiment of this application, the display panel includes a substrate, a pixel definition layer provided on the substrate, an auxiliary section, and a light-shielding section. The pixel definition layer includes an isolation section and a pixel aperture formed surrounded by the isolation section, and the pixel aperture houses a light-emitting unit for realizing light emission or color display of the display panel. The partition column includes an auxiliary section and a light-shielding section, and the auxiliary section and the light-shielding section are sequentially provided on the side of the isolation section away from the substrate, and by installing the auxiliary section, the distance between the light-shielding section and the light-emitting unit can be increased, thereby improving the influence of the light-shielding section on the luminous efficiency of the light-emitting unit. The orthographic projection of the auxiliary section on the substrate is located within the orthographic projection of the light-shielding section on the substrate, that is, the size of the light-shielding section is large, so that the light-shielding section can block large-angle light rays emitted from at least some of the light-emitting units, improving the problem of light rays emitted from such light-emitting units entering other adjacent light-emitting units, and further improving the problem of light mixing between two adjacent light-emitting units, thereby improving the display effect of the display panel. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic top view of a part of the layer structure of a display panel according to an embodiment of this application. [Figure 2] This is a cross-sectional view AA of Figure 1 relating to one embodiment. [Figure 3] This is a schematic top view of a part of the layer structure of a display panel according to an embodiment of this application. [Figure 4]This is a schematic top view of a part of the layer structure of a display panel according to another embodiment of this application. [Figure 5] This is a cross-sectional view AA of Figure 1 relating to another embodiment. [Figure 6] A schematic diagram of a partially enlarged structure at location I in Figure 5. [Figure 7] This is a schematic diagram of the structure in the manufacturing process of a display panel according to an embodiment of this application. [Modes for carrying out the invention]

[0010] The features and exemplary embodiments of each aspect of this application will be described in detail below, and the application will be described in further detail below with reference to the drawings and specific examples in order to more clearly understand the purpose, technical proposal and advantages of this application. The specific embodiments described herein are for illustrative purposes only and should not be understood as limiting this application.

[0011] The embodiments of this application provide a display panel, a display device, and a method for manufacturing a display panel. Hereinafter, each embodiment of the display panel and the display device will be described with reference to the drawings.

[0012] Embodiments of this application provide a display panel which may be an organic light-emitting diode (OLED) display panel.

[0013] Referring to Figures 1 and 2, Figure 1 is a schematic top view of a part of the layer structure of a display panel according to an embodiment of this application. Figure 2 is a cross-sectional view of AA in Figure 1.

[0014] As shown in Figures 1 and 2, the display panel according to the embodiment of this application includes a substrate 100, a pixel definition layer 200 and partition pillars 300 provided on the substrate 100. The pixel definition layer 200 is located on the substrate 100 and includes an isolation portion 210 and a pixel aperture 220 formed surrounded by the isolation portion 210, with a light-emitting unit 230 provided in each pixel aperture 220. The partition pillars 300 include an auxiliary portion 320 and a light-shielding portion 310, which are sequentially stacked on the side of the isolation portion 210 away from the substrate 100, and the orthographic projection of the auxiliary portion 320 on the substrate 100 is located within the orthographic projection of the light-shielding portion 310 on the substrate 100.

[0015] In the display panel according to the embodiment of this application, the display panel includes a substrate 100, a pixel definition layer 200 and a partition column 300 provided on the substrate 100. The pixel definition layer 200 includes an isolation portion 210 and a pixel aperture 220 formed surrounded by the isolation portion 210, the pixel aperture 220 being used to house a light-emitting unit 230, and the light-emitting unit 230 being used to realize light emission or color display of the display panel. The partition column 300 includes an auxiliary portion 320 and a light-shielding portion 310, the auxiliary portion 320 and the light-shielding portion 310 being provided in order on the side of the isolation portion 210 away from the substrate 100, and by installing the auxiliary portion 320, the distance between the light-shielding portion 310 and the light-emitting unit 230 can be increased, thereby improving the influence of the light-shielding portion 310 on the light-emitting efficiency of the light-emitting unit 230. Furthermore, the orthographic projection of the auxiliary section 320 on the substrate 100 is located within the orthographic projection of the light-shielding section 310 on the substrate 100. In other words, because the light-shielding section 310 is large, it can shield at least some of the large-angle light rays emitted by some of the light-emitting units 230. This improves the problem of light rays emitted from the light-emitting units 230 entering other adjacent light-emitting units 230, and further improves the problem of light mixing between two adjacent light-emitting units 230, thereby improving the display effect of the display panel.

[0016] Moreover, by providing the auxiliary part 320, the total height of the auxiliary part 320 and the light shielding part 310 increases, and the size of the light shielding part 310 becomes larger than that of the auxiliary part 320. The carrier layer of the light emitting unit 230 is more likely to break near the partition pillar 300, and the carrier layer can be broken into a plurality of subsections, improving the diffusion of water and oxygen in the carrier layer and improving the yield of the carrier layer.

[0017] In some other embodiments, since the carrier layer of the light emitting unit 230 is generally formed by an all-over evaporation process, lateral conduction may occur due to the all-over evaporated film layer between two adjacent light emitting units 230, that is, carriers may flow between two adjacent light emitting units 230, whereby the light emitting unit 230 that does not need to be displayed emits weak light. The orthographic projection area of the auxiliary part 320 according to this embodiment is smaller than the orthographic projection area of the light shielding part 310, and at least a part of the light shielding part 310 is provided on the air bridge. Therefore, when manufacturing the light emitting unit 230 after having the light shielding part 310, the light shielding part 310 can shield the evaporation material for manufacturing the light emitting unit 230, cut the carrier layer at the position of the partition pillar 300, and further prevent the occurrence of the problem of lateral conduction between two light emitting units 230, improving the display effect of the display panel.

[0018] In some selectable embodiments, continuing to refer to FIG. 2, the orthographic projection area of the auxiliary part 320 on the substrate 100 is smaller than the orthographic projection area of the isolation part 210 on the substrate 100.

[0019] In these selectable embodiments, the size of the auxiliary part 320 is smaller than the size of the isolation part 210, so that the auxiliary part 320 does not shield the pixel aperture 220, and the first electrode 410 located between adjacent auxiliary parts 320 can better cover the light emitting unit 230.

[0020] Optionally, the distance between the orthographic projection boundary of the light shielding part 310 on the substrate 100 and the orthographic projection boundary of the isolation part 210 on the substrate 100 is 10 μm or less.

[0021] In these selectable embodiments, when the distance between the orthographic projection boundary of the light-shielding portion 310 on the substrate 100 and the orthographic projection boundary of the isolation portion 210 on the substrate 100 is 10 μm or less, not only can it be improved that the size of the light-shielding portion 310 is too large and affects the light extraction efficiency of the light-emitting unit 230, but also it can be improved that the size of the light-shielding portion 310 is too small and it is difficult to shield the light at large angles from the light-emitting unit 230.

[0022] When the orthographic projection area of the auxiliary portion 320 on the substrate 100 is smaller than the orthographic projection area of the isolation portion 210 on the substrate 100, the installation method of the light-emitting unit 230 is various. The light-emitting unit 230 may be located only within the pixel aperture 220, or at least a part of the light-emitting unit 230 may extend from within the pixel aperture 220 to the surface away from the substrate 100 of the isolation portion 210 and be located within the space formed and surrounded by the auxiliary portion 320.

[0023] When the light-emitting unit 230 is located only within the pixel aperture 220, the light-shielding portion 310 may extend to the region where the pixel aperture 220 is located so as to shield at least a part of the light-emitting unit 230. When at least a part of the light-emitting unit 230 extends from within the pixel aperture 220 to the surface away from the substrate 100 of the isolation portion 210 and is located within the space formed and surrounded by the auxiliary portion 320, the light-shielding portion 310 may extend to the region where the pixel aperture 220 is located, or the light-shielding portion 310 may extend only to a part of the region where the light-emitting unit 230 located in the isolation portion 210 is located. The orthographic projection of the light-shielding portion 310 on the substrate 100 covers at least a part of the orthographic projection of the light-emitting unit 230 on the substrate 100. That is, it is sufficient that the light-shielding portion 310 can shield the light rays at large angles emitted from the light-emitting unit 230.

[0024] As described above, the light-shielding portion 310 can shield the light-emitting unit 230 located in the region where the pixel aperture 220 is located, and the orthographic projection size of the light-shielding portion 310 on the substrate 100 may be larger than or equal to the orthographic projection size of the isolation portion 210 on the substrate 100. Alternatively, when the light-shielding portion 310 shields the portion of the light-emitting unit 230 located in the portion of the isolation portion 210 that is separated from the surface of the substrate 100, the orthographic projection size of the isolation portion 210 on the substrate 100 may be larger than or equal to the orthographic projection size of the light-shielding portion 310 on the substrate 100.

[0025] The substrate 100 can be installed in various ways, and the substrate 100 is, for example, an array substrate, which includes a base layer and a drive circuit provided on the base layer. The base layer may be a rigid base layer or a flexible base layer. Optionally, a pixel electrode layer is further provided between the array substrate and the pixel definition layer, and the pixel electrode layer includes pixel electrodes 110 distributed in an array manner, corresponding to each light-emitting unit 230, and the pixel electrodes 110 are connected to the drive circuit to drive the light-emitting units 230 to emit light.

[0026] There are various installation methods for the pixel definition layer 200, and the pixel definition layer 200 can be manufactured from a transparent organic material. For example, the material of the pixel definition layer 200 may be hexamethyldisiloxane, epoxy resin, or polyimide (PI), or other silicon-based gel materials with a light transmittance of 90% or more, or other organic gel materials with a slightly lower light transmittance (greater than 80%) and slightly higher flexural strength, and this embodiment is not limited to these.

[0027] There are various installation methods for the light-shielding section 310. To achieve the light-shielding effect, the material of the light-shielding section 310 can be selected as either a light-reflective material or a light-absorbing material. For example, the material of the light-shielding section 310 can be selected as a light-reflective material. Thus, the material of the light-shielding section 310 can include a light-reflective material such as metal. This allows the light-shielding section 310 not only to shield large-angle light rays emitted from the light-emitting unit 230, but also to reflect these light rays back into the light-emitting unit 230, improving the luminous efficiency of the light-emitting unit 230 and further enhancing the display effect of the display panel. Alternatively, the material of the light-shielding section 310 can include a light-absorbing material. For example, the material of the light-shielding section 310 can include a black insulating light-absorbing material. This allows the light-shielding section 310 to absorb large-angle light emitted from the light-emitting unit 230, further improving light mixing and enhancing the display effect of the display panel.

[0028] In some selectable embodiments, as shown in Figures 1 and 2, the display panel further includes a first electrode 410 located on the side of the light-emitting unit 230 away from the substrate 100, the material of the auxiliary portion 320 includes a conductive material, and the first electrodes 410 corresponding to at least some adjacent two light-emitting units 230 are electrically connected to each other via the auxiliary portion 320.

[0029] In these selectable embodiments, the auxiliary portion 320 is made of a conductive material, and the multiple first electrodes 410 are interconnected to the surface electrode via the auxiliary portion 320, and the first electrodes 410 and the pixel electrode 110 cooperate to drive the light-emitting unit 230 to emit light.

[0030] Since the first electrodes 410 are selectively connected to each other via the auxiliary parts 320, the first electrodes 410 may be provided corresponding to each light-emitting unit 230, that is, the first electrodes 410 and light-emitting units 230 are provided in a one-to-one correspondence, thereby eliminating the need for the first electrodes 410 to straddle the auxiliary parts 320 and the isolation parts 210, resulting in a smaller surface area for each single first electrode 410 and reducing the likelihood of breakage. Consequently, the thickness of the first electrodes 410 can be set to be thin, improving the light transmittance of the first electrodes 410, improving the light emission rate of the light-emitting units 230, and further improving the display effect of the display panel. In addition, since the auxiliary parts 320 have conductive properties and are connected to the first electrodes 410, the resistance of the first electrodes 410 can be reduced, solving the problem of uneven display on the display panel caused by excessively high resistance of the first electrodes 410.

[0031] Selectively, the first electrode 410 is located within the pixel aperture 220, or within the space formed by being surrounded by the auxiliary portion 320.

[0032] In several selectable embodiments, the first electrode 410 contacts the auxiliary portion 320 and covers at least a portion of the inner wall surface of the auxiliary portion 320 facing the pixel aperture 220, thereby improving the contact area between the first electrode 410 and the auxiliary portion 320, reducing the resistance at the connection point between the first electrode 410 and the auxiliary portion, and improving the current flow between the first electrode 410 and the auxiliary portion 320. That is, it allows a greater current to flow between the first electrode 410 and the auxiliary portion 320, improving the display effect of the display panel caused by excessive resistance and insufficient current flow.

[0033] The first electrode 410 is generally connected to a common ground voltage (ELVSS) signal line to bring the first electrode 410 to a low potential. If the first electrode 410 and the auxiliary unit 320 are connected to each other, the first electrode 410 may be connected to the ELVSS signal line via the auxiliary unit 320.

[0034] Referring to Figures 2 and 3, Figure 3 is a top view of a part of the layer structure of a display panel according to an embodiment of this application.

[0035] In some optional embodiments, as shown in Figures 2 and 3, the display panel further includes a power signal line 420, the auxiliary unit 320 being electrically connected to the power signal line 420 so that the first electrode 410 is electrically connected to the power signal line 420 via the auxiliary unit 320. The power signal line 420 may be the ELVSS signal line described above.

[0036] There are various installation methods for the auxiliary section 320. For example, the orthographic projection of the auxiliary section 320 on the substrate 100 is strip-shaped, and the ends of the auxiliary section 320 are connected to the power signal line 420. Alternatively, for example, the orthographic projection of the auxiliary section 320 on the substrate 100 is grid-shaped, and the ends of multiple auxiliary sections 320 are all connected to the power signal line 420, thereby improving the connection area between the auxiliary section 320 and the power signal line 420.

[0037] Selectively, the power signal line 420 is annular in shape and is provided surrounding the auxiliary section 320 and a plurality of first electrodes 410. For example, the power signal line 420 is located in the frame area of ​​the display panel, the first electrodes 410 and the auxiliary section 320 are located in the display area of ​​the display panel, the frame area is provided surrounding the display area, and the power signal line 420 is provided within the frame area surrounding the first electrodes 410 and the auxiliary section 320.

[0038] Selectively, as shown in Figure 3, the auxiliary section 320 is grid-like and includes a first auxiliary section 321 extending along a first direction X and a second auxiliary section 322 extending along a second direction Y, wherein a plurality of first auxiliary sections 321 are arranged side by side along the second direction Y, and both ends of each first auxiliary section 321 in the first direction X are connected to the power signal line 420, and a plurality of second auxiliary sections 322 are arranged side by side along the first direction X, and both ends of each second auxiliary section 322 in the second direction Y are connected to the power signal line 420, thereby further improving the contact area between the auxiliary section 320 and the power signal line 420, reducing resistance, and improving the area over which current flows between the auxiliary section 320 and the power signal line 420.

[0039] Optionally, the orthographic projection on at least a portion of the substrate 100 of the partition column 300 may be provided to surround the orthographic projection on the substrate 100 of one or more pixel apertures 220. For example, the orthographic projection on the substrate 100 of the auxiliary portion 320 of the partition column 300 may be provided to surround the orthographic projection on the substrate 100 of one or more pixel apertures 220. In some embodiments, the orthographic projection on the entire substrate 100 of the partition column 300 may be provided to surround one or more pixel apertures 220.

[0040] Selectively, as shown in Figure 3, the orthographic projection of the auxiliary section 320 on the substrate 100 may be provided surrounding the orthographic projection of one pixel aperture 220 on the substrate 100, or as shown in Figure 4, the orthographic projection of the auxiliary section 320 on the substrate 100 may be provided surrounding the orthographic projections of multiple pixel apertures 220 on the substrate 100. When the orthographic projection of the auxiliary section 320 on the substrate 100 is provided surrounding the orthographic projection of one pixel aperture 220 on the substrate 100, the first electrode 410 and the light-emitting unit 230 are provided in a one-to-one correspondence, and each first electrode 410 corresponding to each light-emitting unit 230 can be connected to the auxiliary section 320. If the orthographic projection of the auxiliary unit 320 on the substrate 100 surrounds the orthographic projection of the multiple pixel apertures 220 on the substrate 100, the first electrodes 410 may be provided corresponding to multiple light-emitting units 230, and it is sufficient that the multiple first electrodes 410 can be connected to each other by the auxiliary unit 320.

[0041] If the orthographic projection of the isolation section 210 on the substrate 100 is greater than or equal to the orthographic projection of the light-shielding section 310 on the substrate 100, the partition column 300 may be provided as a whole to surround the orthographic projection of a single pixel aperture 220 or multiple pixel apertures 220 on the substrate 100. That is, the orthographic projections of the auxiliary section 320 and the light-shielding section 310 on the substrate 100 are both provided to surround the orthographic projection of a single pixel aperture 220 or multiple pixel apertures 220 on the substrate 100, thereby enabling the light-shielding section 310 to block light rays of a large angle emitted from each light-emitting unit 230.

[0042] In some selectable embodiments, multiple light-emitting units 230 are combined to form repeating units, and these repeating units are arranged sequentially to form a pixel array structure for the display panel. The orthographic projections of the light-shielding portion 310 and the auxiliary portion 320 on the substrate 100 are provided surrounding the orthographic projections of the pixel apertures on the substrate 100 corresponding to each repeating unit.

[0043] In these selectable embodiments, the pixel array structure is formed by sequentially repeating units. The light-shielding portion 310 and the auxiliary portion 320 are provided surrounding the pixel aperture corresponding to each repeating unit, improving light mixing between two adjacent repeating units and further enhancing the display effect of the display panel.

[0044] In other embodiments, multiple light-emitting units 230 are combined to form a display unit, and the orthographic projections on the substrate 100 of the light-shielding portion 310 and auxiliary portion are provided surrounding the orthographic projections on the substrate 100 of the pixel apertures corresponding to each display unit. The display unit is, for example, a display unit that emits white light. In these embodiments, multiple light-emitting units 230 are combined to form a display unit, for example, by combining a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit to form one display unit that emits white light, and the light-shielding portion 310 is provided surrounding the pixel apertures corresponding to each display unit, the light-shielding portion 310 can improve the mixing of light between two adjacent display units and further improve the display effect of the display panel.

[0045] Optionally, continuing to refer to Figure 2, the display panel includes a package layer 700 for sealing the light-emitting unit 230. The package layer 700 includes a first inorganic layer 71, an organic layer 72, and a second inorganic layer 73, arranged in order away from the light-emitting unit 230.

[0046] Selectively, the first inorganic layer 71 is located on the side of each light-emitting unit 230 away from the substrate 100 and is partitioned by partition pillars 300 into a plurality of independent package sections that are independently provided from each other. As described above, because the size of the auxiliary section 320 is smaller than the size of the light-shielding section 310, the first inorganic layer 71 of the package layer breaks more easily at the location of the partition pillars 300, forming a plurality of independent package sections that are independent from each other, allowing each light-emitting unit to be packaged independently, making it difficult for water and oxygen to spread between each independent package section, the performance between adjacent independent package sections is not affected, the problem of water and oxygen spreading within the first inorganic layer 71 is better improved, and the packaging performance of the display panel is improved.

[0047] Selectively, as shown in Figure 5, the display panel further includes a dimming layer 500 and a protective layer 600 which are sequentially laminated on the side of the light-emitting unit 230 away from the substrate 100, with the dimming layer 500 and protective layer 600 located between the package layer 700 and the first electrode 410.

[0048] The light-adjusting layer 500 may be, for example, a CPL (cappling layer), and is mainly used to reduce optical waveguide effects and improve the overall light-emitting performance of the device. The protective layer 600 is made of LiF (lithium fluoride) material and serves to protect the CPL layer.

[0049] Selectively, along the thickness direction Z of the display panel, at least one of the dimming layer 500, protective layer 600, and first inorganic layer 71 corresponding to each light-emitting unit 230 with a different color has a different thickness. Due to the presence of the partition pillars 300, any of the film layers on each light-emitting unit 230 can be separated into parts independent of each other by the partition pillars 300, so that the thickness of any of the film layers on each light-emitting unit 230 can be adjusted as needed, for example, the thickness of any one of the film layers of the dimming layer 500, protective layer 600, and first inorganic layer 71 corresponding to each light-emitting unit 230 can be adjusted as needed.

[0050] For example, the dimming layer 500 includes dimming units 510, which are located between the light-emitting unit 230 and the independent package section. Multiple dimming units 510 are separated by partition columns 300 and provided independently of each other, and the thickness of the dimming units 510 corresponding to light-emitting units 230 of different colors varies. By adjusting the thickness of the dimming units 510 according to the color of the light-emitting unit 230, the problem of uneven display can be improved. Optionally, adjacent dimming units 510 may be separated by auxiliary units 320.

[0051] Optionally, the protective layer 600 includes protective sections 610, each protective section 610 located between each light-emitting unit 230 and an independent package section, i.e., multiple protective sections 610 are separated by partition columns 300 and provided independently of each other, and the thickness of the protective sections 610 varies to correspond to light-emitting units 230 of different colors, and by adjusting the thickness of the protective sections 610 according to the color of the light-emitting units 230, the problem of uneven display can be improved. Optionally, adjacent protective sections 610 may be separated by auxiliary sections 320.

[0052] Referring together to Figures 1, 5, and 6, Figure 5 is a cross-sectional view of part AA in Figure 1 relating to yet another embodiment, and Figure 6 is a schematic diagram of a partially enlarged structure of part I in Figure 5.

[0053] In some selectable embodiments, as shown in Figures 1, 5, and 6, the light-emitting unit 230 includes a hole injection layer 231, a hole transport layer 232, a light-emitting material layer 233, an electron transport layer 234, and an electron injection layer 235, which are stacked in order away from the substrate 100, and the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, and electron injection layer 235 are all spaced apart from the auxiliary portion 320.

[0054] In these selectable embodiments, the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, and electron injection layer 235 in the light-emitting unit 230 are all spaced apart from the auxiliary section 320, thereby improving the problem of carriers in the light-emitting unit 230 crosstalking with each other through the auxiliary section 320, and further improving the problem of light mixing between two adjacent light-emitting units 230.

[0055] Selectively, in at least two adjacent layers among the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, and electron injection layer 235, the distance from the layer closer to the substrate 100 to the adjacent auxiliary layer 320 is greater than the distance from the layer further from the substrate 100 to the adjacent auxiliary layer 320.

[0056] For example, the distance from the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, and electron injection layer 235 to the auxiliary section 320 gradually decreases.

[0057] To avoid electrical connection between the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, electron injection layer 235 and the auxiliary part 320, the distance between the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, electron injection layer 235 and the auxiliary part 320 can be increased, that is, the first electrode 410 and the auxiliary part 320 are electrically connected, and the distance between the first electrode 410 and the auxiliary part 320 is the closest. The hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, and electron injection layer 235 all have a certain distance and spacing from the auxiliary part 320. Furthermore, since the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, electron injection layer 235 and the first electrode 410 are covered and provided in a laminated manner, by limiting the distance from each film layer to the adjacent auxiliary part 320, it is possible to use the upper film layer to block the coverage of the lower film layer, and furthermore, it cuts off paths that may conduct from the side, improving the display effect.

[0058] Selectively, the distance from one of the later of the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, electron injection layer 235, and first electrode 410 to an adjacent auxiliary part 320 may be less than or equal to the distance from one of the earlier of the two to the auxiliary part 320. For example, the distance from the hole transport layer 232 to an adjacent auxiliary part 320 may be equal to the distance from the hole injection layer 231 to an adjacent auxiliary part 320, or it may be less than the distance from the hole injection layer 231 to an adjacent auxiliary part 320, and is not particularly limited.

[0059] Referring to Figure 7, in order to realize the above-described film layer stacking structure, the coverage area of ​​the deposited material can be adjusted by adjusting the deposition angle α during deposition of each film layer, and further, the distance from the hole injection layer 231, hole transport layer 232, light-emitting material layer 233, electron transport layer 234, electron injection layer 235 and the first electrode 410 to the adjacent auxiliary part can be controlled.

[0060] In some selectable embodiments, each light-emitting unit 230 has a different light-emitting color, and the light-emitting units 230 are used to achieve a color display on the display panel, and the thickness of the first electrode 410 corresponding to each light-emitting unit 230 with a different color is different. The first electrode 410 corresponding to the light-emitting unit 230 is the first electrode 410 located on the side of the light-emitting unit 230 away from the substrate 100.

[0061] Since each first electrode 410 in the embodiment of this application is provided separately by partition columns 300, the film layer of each first electrode 410 can be manufactured independently, meaning that the thickness of each first electrode 410 can be adjusted according to actual requirements. By adjusting the thickness of the first electrode 410, the monochromatic efficiency and the tendency of brightness attenuation of the light-emitting unit 230 can be adjusted. Therefore, by appropriately adjusting the thickness of the first electrode 410 of each light-emitting unit 230 with different colors, the light-emitting effect of each light-emitting unit 230 can be changed, further improving the color misalignment of the display panel and enhancing the display effect.

[0062] Selectively, the light-emitting units 230 of different colors include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, wherein the thickness of the first electrode 410 corresponding to the red light-emitting unit and the thickness of the first electrode 410 corresponding to the blue light-emitting unit are both greater than the thickness of the first electrode 410 corresponding to the green light-emitting unit.

[0063] By relatively increasing the thickness of the first electrode 410 corresponding to the red light-emitting unit, the light emission efficiency of the red light-emitting unit can be effectively increased. The blue light-emitting unit is limited by the material used in the light-emitting material layer 233 and has a relatively short service life. By relatively increasing the thickness of the first electrode 410 corresponding to the blue light-emitting unit, the service life of the blue light-emitting unit can be effectively increased. The red light, green light, and blue light emitted by the red light-emitting unit, green light-emitting unit, and blue light-emitting unit mix with each other to form white light, and the proportion of green light in the formed white light is maximized. By setting the thickness of the first electrode 410 corresponding to the green light-emitting unit to be smaller than the thickness of the first electrode 410 corresponding to the red light-emitting unit and the first electrode 410 corresponding to the blue light-emitting unit, the luminance attenuation range of the green light in a side view can be reduced, and the luminance of the white light can be ensured.

[0064] Selectively, the thickness of the first electrode 410 corresponding to the red light-emitting unit is 110 angstroms to 180 angstroms, the thickness of the first electrode 410 corresponding to the blue light-emitting unit is 110 angstroms to 180 angstroms, and the thickness of the first electrode 410 corresponding to the green light-emitting unit is 80 angstroms to 150 angstroms. Specifically, the thickness of the first electrode 410 corresponding to the red light-emitting unit can be 125 angstroms, and the thickness of the first electrode 410 corresponding to the blue light-emitting unit is 130 angstroms. By setting the above different cathode thicknesses, optimization of the monochromatic efficiency, brightness attenuation, and color shift in visibility of the display panel can be achieved.

[0065] In some optional embodiments, continuing with reference to Figure 6, the light-shielding portion 310 includes a first surface 311 facing the isolation portion 210 and a second surface 312 away from the isolation portion 210, wherein the orthographic projection of the second surface 312 on the substrate 100 lies within the orthographic projection of the first surface 311 on the substrate 100. Optionally, the edge of the first surface 311 is located on the side of the second surface 312 facing the adjacent pixel aperture 220.

[0066] In these selectable embodiments, the orthographic projection of the second surface 312 on the substrate 100 lies within the orthographic projection of the first surface 311 on the substrate 100. Therefore, the side surface 313 connecting the first surface 311 and the second surface 312 can be provided at an angle, and during the deposition process of the light-emitting unit 230, the angled side surface 313 carries excess deposition material. Compared to the prior art, providing the side surface 313 at an angle prevents the deposition material from accumulating too much on the vertical side surface 313 and falling onto the light-emitting unit 230 below, thus preventing the formation of foreign matter on the light-emitting unit 230 and improving the manufacturing yield of the display panel.

[0067] Optionally, as described above, the light-shielding portion 310 further includes a side surface 313 connecting the first surface 311 and the second surface 312, wherein the side surface 313 is planar and is inclined to be close to the first surface 311 along the direction approaching the pixel aperture 220. The side surface 313 is planar, making it easy to manufacture while allowing it to support more deposition material.

[0068] Selectively, the angle between the side surface 313 and the first surface 311 is 45° or less.

[0069] The smaller the angle between the side surface 313 and the first surface 311, the gentler the slope of the side surface 313 becomes, making it less likely for the vapor-deposited material supported on the side surface 313 to fall off, thereby improving the manufacturing yield of the display panel. Therefore, when the angle between the side surface 313 and the first surface 311 is 45° or less, a large amount of vapor-deposited material can be supported on the side surface 313, and the vapor-deposited material is less likely to fall from the side surface 313 onto the light-emitting unit 230, thereby improving the manufacturing yield of the display panel.

[0070] Selectively, along the thickness direction Z of the display panel, the cross-section of the light-shielding portion 310 is trapezoidal, and the side surface 313 is the leg of the trapezoid. Selectively, along the thickness direction Z, the cross-section of the light-shielding portion 310 is isosceles trapezoidal. The shielding effect of the light-shielding portion 310 on the pixel apertures 220 located on both sides of it tends to be consistent, resulting in a more uniform display effect at different positions on the display panel.

[0071] As described above, the display panel includes a package layer 700 for packaging the light-emitting unit 230, and continuing to refer to Figure 2, a color film substrate 800 may be provided on the side of the package layer 700 away from the light-emitting unit 230, the color film substrate 800 including a barrier portion 810 and a filter opening 820 formed surrounded by the barrier portion 810, a filter unit 830 provided within each filter opening 820, and the orthographic projections of each filter unit 830 and each light-emitting unit 230 on the substrate 100 are provided to overlap at least partially.

[0072] In these selectable embodiments, by providing a color film substrate 800 within the display panel, stray light can be filtered using the filter unit 830 of the color film substrate 800, thereby improving the display effect of the display panel. Furthermore, when a color film substrate 800 is provided within the display panel, there is no need to provide a polarizing plate, and the structure of the display panel can be simplified.

[0073] Optionally, continuing to refer to Figure 2, the display panel further includes a touch layer 900, which is located between the color film substrate 800 and the package layer 700.

[0074] Thus, the light-emitting unit 230 may be used to realize color display on the display panel.

[0075] In other embodiments, the emission colors of multiple light-emitting units 230 are the same, and the light-emitting units 230 are used as light sources for a display panel. For example, the light-emitting unit 230 is further provided with a quantum dot material unit, which converts the light emitted from the light-emitting unit 230 into light of a predetermined color in order to realize a color display on the display panel. In this case, the light-emitting unit 230 may be an organic light-emitting diode, or it may be a microlight-emitting diode.

[0076] Embodiments of a second aspect of this application further provide a display device including a display panel of any of the embodiments of the first aspect described above. Since the display device according to the embodiment of the second aspect of this application includes a display panel of any one of the embodiments of the first aspect described above, the display device according to the embodiment of the second aspect of this application has the beneficial effects of the display panel of any one of the embodiments of the first aspect described above, which are omitted from this explanation.

[0077] The display devices according to the embodiments of this application include, but are not limited to, devices having display functions such as mobile phones, personal digital assistants (PDAs), tablet computers, e-readers, televisions, gates, smart landlines, and consoles.

[0078] The embodiments described above in this application do not describe all details in detail, nor do they limit the specific embodiments of this invention. It is clear from the above description that many modifications and changes are possible. These embodiments are selected and described specifically in this specification for the purpose of better interpreting the principles and practical applications of this application, and for enabling those skilled in the art to better utilize and modify this application. This application is limited only by the entire scope of the claims and equivalents.

Claims

1. circuit board and A pixel definition layer located on the substrate, the pixel definition layer including an isolation portion and a pixel aperture formed surrounded by the isolation portion, The partition column includes an auxiliary portion and a light-shielding portion, which are sequentially stacked on the side of the isolation portion away from the substrate, Each of the aforementioned pixel apertures is provided with a light-emitting unit inside. The orthographic projection of the auxiliary portion on the substrate is located within the orthographic projection of the light-shielding portion on the substrate. The package further comprises a package layer for packaging the aforementioned light-emitting unit, The package layer includes a first inorganic layer, The first inorganic layer is located on the side of each light-emitting unit that is away from the substrate. The thickness of the first inorganic layer corresponding to the light-emitting unit of a different color is different. Display panel.

2. The light-emitting unit further includes a first electrode located on the side away from the substrate, The material of the auxiliary portion includes a conductive material, and the first electrodes corresponding to at least some adjacent two of the light-emitting units are electrically connected to each other via the auxiliary portion. The first electrode is in contact with the auxiliary portion and covers at least a portion of the inner wall surface of the auxiliary portion toward the pixel aperture. The display panel according to claim 1.

3. Further including power signal lines, The auxiliary unit is electrically connected to the power signal line, The auxiliary portion is in the shape of a strip, and the end of the auxiliary portion is connected to the power signal line. The orthographic projection area of ​​the auxiliary portion on the substrate is smaller than the orthographic projection area of ​​the isolation portion on the substrate. The orthogonal projection of the light-shielding portion onto the substrate at least partially covers the orthogonal projection of the light-emitting unit onto the substrate. The display panel according to claim 2.

4. The light-emitting unit includes a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer, which are stacked in order away from the substrate, and the hole injection layer, hole transport layer, electron transport layer, and electron injection layer are all provided at a distance from the auxiliary part. In at least two of the hole injection layer, hole transport layer, light-emitting material layer, electron transport layer, and electron injection layer, the distance from the side closer to the substrate to the adjacent auxiliary portion is greater than the distance from the side further from the substrate to the adjacent auxiliary portion. The display panel according to claim 2.

5. The emission colors of the multiple light-emitting units are different, and the thickness of the first electrode corresponding to at least two different colored light-emitting units is different. The light-emitting units of different colors include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, wherein the thickness of the first electrode corresponding to the red light-emitting unit and the thickness of the first electrode corresponding to the blue light-emitting unit are both greater than the thickness of the first electrode corresponding to the green light-emitting unit. The display panel according to claim 2.

6. The first inorganic layer is divided into a plurality of independent package sections, which are provided independently of each other by the partition columns. The display panel according to claim 1.

7. The light-emitting unit and the independent package portion further include a dimming unit located between them, The thickness of the dimming section corresponding to the light-emitting unit of a different color is different. The display panel according to claim 6.

8. It further includes a protective portion located between the light-emitting unit and the independent package portion, The thickness of the protective part corresponding to the light-emitting unit of a different color is different. The display panel according to claim 6.

9. The display panel further includes a color film substrate located on the side of the package layer away from the light-emitting unit, The aforementioned color film substrate includes a barrier portion and a filter opening formed surrounded by the barrier portion. A filter unit is provided in each filter opening. The orthographic projections on the substrates of each filter unit and each light-emitting unit are provided to overlap at least partially. The display panel according to claim 6.

10. The light-shielding portion includes a first surface facing the isolation portion and a second surface away from the isolation portion. The orthographic projection of the second surface on the substrate is located within the orthographic projection of the first surface on the substrate. The display panel according to claim 1.

11. The light-shielding portion further includes a side surface connecting the first surface and the second surface, and the side surface is planar. The angle between the side surface and the first surface is 45° or less. The light-shielding portion has a trapezoidal cross-section along the thickness direction of the display panel. The display panel according to claim 10.

12. The orthographic projection on the substrate of at least a portion of the partition column is provided surrounded by the orthographic projection on the substrate of one or more of the pixel apertures. The display panel according to claim 1.

13. The light-emitting unit is used as a light source for the display panel. The display panel according to claim 1.

14. circuit board and A pixel definition layer located on the substrate, the pixel definition layer including an isolation portion and a pixel aperture formed surrounded by the isolation portion, The partition column includes an auxiliary portion and a light-shielding portion, which are sequentially stacked on the side of the isolation portion away from the substrate, Each of the aforementioned pixel apertures is provided with a light-emitting unit inside. The orthographic projection of the auxiliary portion on the substrate is located within the orthographic projection of the light-shielding portion on the substrate. The light-emitting unit further includes a first electrode located on the side away from the substrate, The emission colors of the multiple light-emitting units are different, and the thickness of the first electrode corresponding to at least two different colored light-emitting units is different. The light-emitting units of different colors include a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, wherein the thickness of the first electrode corresponding to the red light-emitting unit and the thickness of the first electrode corresponding to the blue light-emitting unit are both greater than the thickness of the first electrode corresponding to the green light-emitting unit. Display panel.

15. The material of the auxiliary portion includes a conductive material, and the first electrodes corresponding to at least some adjacent two of the light-emitting units are electrically connected to each other via the auxiliary portion. The first electrode is in contact with the auxiliary portion and covers at least a portion of the inner wall surface of the auxiliary portion toward the pixel aperture. The display panel according to claim 14.

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