Display panel, its manufacturing method, and display device

Abstract

This application discloses a display panel, its manufacturing method, and a display device. The display panel includes a substrate, a pixel definition layer, multiple partition structures, and multiple light-emitting units. The pixel definition layer is disposed on the substrate, and the multiple partition structures are disposed on the pixel definition layer. Adjacent light-emitting units are separated by partition structures. A deformation structure is disposed on a fixed structure, and the radial width of the deformation structure is greater than that of the fixed structure. The deformation structure is used to partition the film layers of adjacent light-emitting units during the formation of the light-emitting units. Furthermore, the deformation structure is used to change the radial width of the deformation structure by controlling ultraviolet or visible light during the formation of the light-emitting units, thereby causing the deformation structure to deform or recover its deformation. By controlling the radial width of the deformation structure at different positions, this application achieves more uniform luminous efficiency of light-emitting units at different positions on the same display panel, thus improving the display effect of the display panel.

Description

Technical Field

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

[0002] In the fabrication process of OLED (Organic Light-Emitting Diode) devices, maskless deposition and photolithography are two methods for patterning organic light-emitting units. Maskless deposition, based on photolithography, removes the metal mask and introduces a partition structure to separate the film layers of adjacent light-emitting units, thereby achieving an array arrangement of light-emitting units.

[0003] Although the film area of ​​the light-emitting unit can be adjusted by changing the size of the eaves extension in the partition structure and the film deposition angle in maskless deposition technology, the luminous efficiency of products from different periods is affected by different production lines and film deposition quality in the actual production of OLED organic light-emitting devices. This leads to the problem that the luminous efficiency of light-emitting units at different locations on the same display panel varies. Therefore, those skilled in the art urgently need a technical means to solve the above problems. Summary of the Invention

[0004] The purpose of this application is to provide a display panel, a method for manufacturing the same, and a display device. By controlling the radial width of the deformable structure at different positions, the light-emitting area of ​​the light-emitting unit can be controlled, thereby making the light-emitting efficiency of the light-emitting units at different positions on the same display panel more uniform and improving the display effect of the display panel.

[0005] This application discloses a display panel, which includes a substrate, a pixel definition layer, multiple partition structures, and multiple light-emitting units. The pixel definition layer is disposed on the substrate and has multiple openings to form multiple sub-pixel regions. The multiple partition structures are disposed on the pixel definition layer. The multiple light-emitting units are respectively disposed within the multiple sub-pixel regions, and adjacent light-emitting units are separated by the partition structures. The partition structure includes a fixed structure and a deformable structure. The deformable structure is disposed on the fixed structure, and the radial width of the deformable structure is greater than the radial width of the fixed structure. The deformable structure is used to partition the film layers of adjacent light-emitting units during the formation of the light-emitting units. The deformable structure is also used to change the radial width of the deformable structure by controlling the irradiation of ultraviolet light or visible light during the formation of the light-emitting units to cause the deformable structure to deform or recover its deformation.

[0006] Optionally, the deformable structure is formed using a liquid crystal elastomer material doped with conductors. The deformable structure is used to undergo bending deformation under ultraviolet light irradiation, thereby increasing the radial width of the deformable structure, and recovering its deformation under visible light irradiation.

[0007] Optionally, within the multiple sub-pixel regions, at least two light-emitting units have different light-emitting areas; and in the multiple partition structures, the radial widths of the deformable structures are the same.

[0008] Optionally, the deformation structure includes a first deformation portion and a plurality of second deformation portions, the plurality of second deformation portions being respectively disposed on a plurality of sides of the first deformation portion; the first deformation portion is disposed on the top surface of the fixed structure, and the second deformation portions are disposed on the sides of the fixed structure; the angle formed by the length direction of the second deformation portion and the normal direction of the substrate is a first angle; under ultraviolet light irradiation, the first angle gradually increases, so as to increase the radial width of the deformation structure; wherein, the length direction of the second deformation portion extends from the side of the second deformation portion away from the first deformation portion to the side of the second deformation portion close to the first deformation portion.

[0009] Optionally, the display panel further includes a plurality of first filter structures and a plurality of second filter structures, which are respectively disposed under a plurality of fixed structures; on the orthographic projection of the substrate, the first filter structure coincides with the first deformation portion, and the second filter structure coincides with the second deformation portion; the first filter structure is used to block ultraviolet light and filter visible light; the second filter structure is used to block visible light and filter ultraviolet light; the first deformation portion is used to not deform under visible light irradiation, and the second deformation portion is used to undergo bending deformation under ultraviolet light irradiation.

[0010] Optionally, the light-emitting unit includes a bottom electrode, a light-emitting functional layer, and a top electrode. The light-emitting functional layer is disposed between the bottom electrode and the top electrode, and the top electrode is disposed on the side of the bottom electrode away from the substrate. The top electrode is in direct contact with the deformation structure. The light-emitting functional layers of two adjacent light-emitting units are separated by the deformation structure and the fixing structure. The light-emitting functional layer and the deformation structure are separated by the top electrode. The display panel further includes a light-shielding layer disposed on the deformation structure for blocking ultraviolet light incident from the side of the deformation structure away from the substrate.

[0011] Optionally, the length of the second deformed portion in the length direction is less than the length of the substrate in the normal direction of the fixed structure.

[0012] This application discloses a method for manufacturing a display panel, the method comprising the following steps:

[0013] Provide a substrate;

[0014] A pixel definition layer is formed on the substrate, and multiple openings are formed to form multiple sub-pixel regions;

[0015] A fixed structure film layer and a deformable structure film layer are sequentially formed on the pixel definition layer, and after patterning, multiple partition structures are formed; wherein, the deformable structure is disposed on the fixed structure, and the radial width of the deformable structure is greater than the radial width of the fixed structure;

[0016] An ultraviolet light is provided to irradiate at least one of the partition structures, causing the deformable structure of the partition structure to deform, thereby increasing the radial width of the deformable structure;

[0017] Multiple light-emitting units are formed in multiple sub-pixel regions using multiple partition structures, and two adjacent light-emitting units are separated by the partition structures;

[0018] Form a display panel.

[0019] Optionally, after the step of forming multiple light-emitting units in multiple sub-pixel regions using multiple partition structures, and separating two adjacent light-emitting units by the partition structures, the method further includes:

[0020] Remove the ultraviolet light and irradiate the partition structure with visible light so that the deformed structure can recover its deformation.

[0021] This application also discloses a display device, including a driving circuit and a display panel as described in any one of claims 1-9, wherein the driving circuit is used to drive the display panel to display.

[0022] This application controls the area of ​​light-emitting units at different locations by setting a deformable partition structure in the non-opening area and controlling the radial width of the deformable structure at different positions in the non-opening area during the formation of the light-emitting units. By controlling the radial width of the deformable structure within the partition structure, the light-emitting area of ​​the light-emitting units can be controlled. When different positions on the display panel exhibit varying luminous efficiency, the luminous efficiency of the corresponding light-emitting unit can be altered by controlling the radial width of the deformable structure at that position. This solves the problem of luminous efficiency being affected by different production lines and film formation quality at different stages of production, resulting in more uniform luminous efficiency of light-emitting units at different positions on the same display panel. Compared to a fixed partition structure, redesigning the partition structure is costly when different light-emitting areas are required. This application, with its deformable structure having an adjustable opening size, allows for adjustment of the radial width of the deformable structure at different positions during actual manufacturing, enabling the production of display panels with different light-emitting areas and significantly reducing product development costs. Attached Figure Description

[0023] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0024] Figure 1 This is a schematic diagram of the display panel according to the first embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the deformation and recovery of the deformable structure according to the first embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the deformation principle of the deformable structure according to the first embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the display panel according to the second embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the deformation and recovery of the deformable structure according to the second embodiment of this application;

[0029] Figure 6 This is a deformation diagram of the deformation structure according to the second embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the first filter structure and the second filter structure according to the second embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the light-shielding layer according to the second embodiment of this application;

[0032] Figure 9 This is a schematic diagram illustrating the manufacturing method of the display panel of this application;

[0033] Figure 10 This is a schematic diagram of the display device of this application.

[0034] Among them, 100 is a display panel; 110 is a substrate; 111 is a pixel definition layer; 112 is a sub-pixel area; 120 is a partition structure; 121 is a deformation structure; 1211 is a first deformation part; 1212 is a second deformation part; 122 is a fixing structure; 131 is a first light filtering structure; 132 is a second light filtering structure; 140 is a light-emitting unit; 141 is a bottom electrode; 142 is a light-emitting functional layer; 143 is a top electrode; 150 is a light-shielding layer; 200 is a display device; and 210 is a driving circuit. Detailed Implementation

[0035] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0036] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature specified as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. Furthermore, terms such as "upper," "lower," "left," "right," "vertical," and "horizontal," indicating orientation or positional relationships, are based on the orientation or relative positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description of this application, not indicating that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0038] Figure 1 This is a schematic diagram of the display panel according to the first embodiment of this application. Figure 2 This is a schematic diagram illustrating the deformation and recovery of the deformable structure according to the first embodiment of this application. See [link / reference]. Figures 1 to 2As shown, this application discloses a display panel 100, which includes a substrate 110, a pixel definition layer 111, a plurality of partition structures 120, and a plurality of light-emitting units 140. The pixel definition layer 111 is disposed on the substrate 110 and has a plurality of openings to form a plurality of sub-pixel regions 112. The plurality of partition structures 120 are disposed on the pixel definition layer 111. The plurality of light-emitting units 140 are respectively disposed in the plurality of sub-pixel regions 112, and adjacent light-emitting units 140 are separated by the partition structures 120. Structure 120 includes a fixed structure 122 and a deformable structure 121. The deformable structure 121 is disposed on the fixed structure 122, and the radial width of the deformable structure 121 is greater than the radial width of the fixed structure 122. The deformable structure 121 is used to isolate the film layers of two adjacent light-emitting units 140 when forming the light-emitting unit 140. The deformable structure 121 is also used to change the radial width of the deformable structure 121 by controlling ultraviolet light or visible light to deform or recover deformation when forming the light-emitting unit 140.

[0039] This application controls the area of ​​light-emitting units 140 at different positions by setting a deformable partition structure 120 in the non-opening area and controlling the radial width of the deformable structure 121 at different positions in the non-opening area during the formation of the light-emitting unit 140. By controlling the radial width of the deformable structure 121 within the partition structure 120, the light-emitting area of ​​the light-emitting unit 140 is controlled. When different positions of the display panel 100 exhibit different luminous efficiencies, the luminous efficiency of the corresponding light-emitting unit 140 can be changed by controlling the radial width of the deformable structure 121 at that position. This solves the problem of the luminous efficiency of products from different periods being affected by different production lines and film formation quality, resulting in more uniform luminous efficiency of light-emitting units 140 at different positions on the same display panel 100. Compared to a fixed partition structure 120, redesigning the partition structure 120 is more costly when different light-emitting areas of the light-emitting unit 140 are required. This application utilizes a deformable structure 121 with an adjustable opening size. In actual manufacturing, the radial width of the deformable structure 121 at different positions can be adjusted according to different needs, thereby producing display panels 100 with different light-emitting areas, which can significantly reduce product development costs.

[0040] In this embodiment, the film layer of the partition structure 120 and the film layer of the pixel definition layer 111 have the same layout under the orthographic projection of the substrate 110, both being mesh structures. The openings of the mesh structure correspond to the sub-pixel regions 112, and the areas other than the openings can be referred to as non-opening regions. In this embodiment, the film layer of the partition structure 120 disposed between two adjacent light-emitting units 140 is described as a single partition structure 120. However, in reality, multiple partition structures 120 are continuous film layers, which are used to partition and form multiple light-emitting units 140 in multiple sub-pixel regions 112.

[0041] It is worth mentioning that this application solves the problem of different luminous efficiency at different positions by changing the radial width of the deformable structure 121 in the partition structure 120, thereby enabling the partition structure 120 to have different partitioning capabilities and changing the organic light-emitting area of ​​the light-emitting unit 140. Furthermore, in high-generation processes, the film thickness of display panels 100 at different positions on the same large board varies significantly, easily leading to poor quality of display panels 100 at certain positions. In high-generation processes, the cost of modifying and designing the mask for the partition structure 120 is high, or even impossible, resulting in a fixed film layer for the light-emitting unit 140, and the adjustment range of the evaporation angle cannot achieve the precision required for a single display panel 100. This application is specifically applied in high-generation processes to improve the quality of multiple display panels 100 on a large board by changing the size of the light-emitting area at different positions.

[0042] Specifically, for the deformable structure 121 in the partition structure 120, this embodiment can use a photodeformable material. For example, a material that can expand when exposed to visible or ultraviolet light, thereby increasing the radial width of the deformable structure 121.

[0043] In this embodiment, the increased radial width of the deformable structure 121 leads to a smaller light-emitting area of ​​the light-emitting unit 140 during its formation. Therefore, this embodiment allows for local adjustment of the deformation of the deformable structure 121 at different locations, thereby controlling different regions to have different light-emitting areas and ultimately adjusting the luminous efficiency of different regions.

[0044] In one specific embodiment, the material of the deformable structure 121 is a liquid crystal elastomer material doped with conductors. The deformable structure 121 is used to undergo bending deformation under visible light or ultraviolet light irradiation, so as to increase the radial width of the deformable structure 121.

[0045] Liquid crystal elastomers (LCEs) are polymeric materials that are non-crosslinked liquid crystal polymers that have undergone appropriate crosslinking and exhibit elasticity in either an isotropic or liquid crystal state. LCEs combine the anisotropy of liquid crystals with the rubber elasticity of polymer networks, thus possessing excellent external field responsiveness, molecular synergy, and elasticity. LCEs can change shape under external stimuli such as electric fields, temperature, and light by altering the arrangement of mesocrystalline units, or even undergoing a phase transition from a liquid crystal phase to an isotropic phase. Taking light as an example, photoresponsive polymeric materials typically contain molecules or functional groups that can absorb light energy (such as azophenyl groups). Under the influence of light, they undergo certain chemical or physical reactions, producing a series of structural and morphological changes, thereby exhibiting specific functions. The principle lies in inducing shape changes in macroscopic objects through light, converting light energy into mechanical energy; this is also known as photodeformation.

[0046] Figure 3 This is a schematic diagram of the deformation principle of the deformable structure according to the first embodiment of this application. See also: Figure 3 As shown, the liquid crystal elastomer also includes azobenzene mesocrystalline units, which are among the most widely studied photoresponsive groups. For example, a film with parallel-oriented azobenzene mesocrystalline units at 360 nm (5 Up to 20 Under ultraviolet light irradiation, the light will bend along the alignment direction of the liquid crystal cells towards the incident light. Using 540nm (10) Up to 30 After being irradiated with visible light, the thin film returns to its initial flat state. The principle is that at a wavelength of approximately 360 nm in ultraviolet light, azobenzene has a high molar absorptivity; 99% of photons are absorbed by the azobenzene layer, which is less than 1 μm thick. This means that only the surface of the film undergoes photoinduced shrinkage, while the rest of the film remains unchanged because it is essentially unaffected by ultraviolet light. Therefore, the film bends under the drive of internal stress. When the bent film is irradiated with visible light, the cis-azobenzene returns to the trans-azobenzene state, and the film returns to its original flat state. Similarly, the situation is reversed for films with vertically oriented azobenzene mesocrystalline units. In these films, the azobenzene liquid crystal units are arranged perpendicular to the film surface. The bending of the cis-azobenzene units after ultraviolet light irradiation causes isotropic expansion of the film surface, resulting in the film bending in the completely opposite direction.

[0047] In this embodiment, the bending of the liquid crystal elastomer under visible or ultraviolet light is utilized. By bending, the radial width of the deformation structure 121 can be changed, thereby adjusting the area covered by the partition structure 120 on the orthogonal projection of the substrate 110. When the radial width of the deformation structure 121 increases, the coverage area of ​​the corresponding partition structure 120 increases, resulting in a smaller light-emitting area of ​​the light-emitting unit 140 when forming the film layer of the light-emitting unit 140.

[0048] The partition structure 120 in this application mainly functions during the formation of the light-emitting unit 140. After the light-emitting unit 140 is formed, visible light or ultraviolet light can be removed. After the light is removed, the deformable structures 121 in the partition structure 120 return to their initial state, thereby making the radial widths of the multiple deformable structures 121 the same. However, since the radial widths of the deformable structures 121 are different when the light-emitting unit 140 is formed, at least two light-emitting units 140 will have different light-emitting areas even when the area of ​​each opening in the pixel definition layer 111 is equal.

[0049] Specifically, within the plurality of sub-pixel regions 112, at least two light-emitting units 140 have different light-emitting areas; and in the plurality of partition structures 120, the radial width of the deformation structure 121 is the same. In other words, in the initial design of this application, the size of each opening is the same, that is, the area of ​​each sub-pixel is the same. If the light-emitting area of ​​the light-emitting unit 140 is not changed by the deformation structure 121, the light-emitting areas of the light-emitting units 140 at multiple locations are equal. However, after changing the light-emitting area of ​​the light-emitting unit 140 by the deformation structure 121, although the light-emitting area at that location changes, the overall luminous efficiency of the display panel 100 is more uniform.

[0050] Specifically, the light-emitting unit 140 includes a bottom electrode 141, a light-emitting functional layer 142, and a top electrode 143. The light-emitting unit 140 includes a bottom electrode 141, a light-emitting functional layer 142, and a top electrode 143. The light-emitting functional layer 142 is disposed between the bottom electrode 141 and the top electrode 143. The top electrode 143 is disposed on the side of the bottom electrode 141 away from the substrate 110.

[0051] The partition structure 120 is mainly used to partition the light-emitting functional layer 142 of the light-emitting unit 140. During the formation of the light-emitting functional layer 142, the eaves-like edge formed between the deformable structure 121 and the fixed structure 122 is used to partition the light-emitting functional layer 142. By changing the degree of curvature of the deformable structure 121, the radial width of the deformable structure 121 is adjusted, thereby achieving different areas of the light-emitting functional layer 142 at different positions.

[0052] It is understood that the deformation structure 121 in this embodiment only acts on the stage of forming the light-emitting unit 140, and more specifically, on the stage of forming the light-emitting functional layer 142 of the light-emitting unit 140. After the light-emitting functional layer 142 is formed, the deformation structure 121 can be restored to its initial state. The light-emitting functional layer 142 generally includes multiple film layers, such as a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer, etc., and the formation of this film layer generally needs to be carried out in steps.

[0053] Specifically, when forming the top electrode 143, the deformed structure 121 can be restored to its initial state. The liquid crystal elastomer material doped with conductors can be a carbon-doped conductive liquid crystal elastomer material. By utilizing the conductivity of carbon, the deformed structure 121 can acquire a certain degree of conductivity to connect to the top electrode 143 and reduce the impedance of the top electrode 143.

[0054] Figure 4 This is a schematic diagram of the display panel according to the second embodiment of this application. Figure 5 This is a schematic diagram illustrating the deformation and recovery of the deformable structure according to the second embodiment of this application. See [link / reference]. Figures 4 to 5 As shown, based on the first embodiment, this application also discloses another display panel 100. The similarities between this display panel 100 and the above-described display panel 100 will not be repeated here. Please refer to the content in the above embodiments. Furthermore, any solutions in the above embodiments that do not conflict with this embodiment can be applied to this embodiment.

[0055] Specifically, the deformation structure 121 includes a first deformation part 1211 and a plurality of second deformation parts 1212, the plurality of second deformation parts 1212 being respectively disposed on a plurality of sides of the first deformation part 1211; the first deformation part 1211 is disposed on the top surface of the fixing structure 122, and the second deformation parts 1212 are disposed on the sides of the fixing structure 122.

[0056] In this embodiment, the top surface of the fixing structure 122 is the film surface on the side of the fixing structure 122 away from the substrate 110. Considering that the cross-sectional shape of the fixing structure 122 is generally trapezoidal, the first deformation part 1211 is generally disposed at the upper base of the trapezoid, i.e., the top surface, and the second deformation part 1212 is disposed at the waist position of the trapezoid, i.e., the side surface. The deformation structure 121 covers the top surface and the side surface of the fixing structure 122 respectively, thereby forming the eaves of the partition structure 120. The coverage area of ​​the partition structure 120 can be adjusted by adjusting the deformation structure 121 so that its radial width changes after bending deformation.

[0057] In one specific embodiment, the first deformable portion 1211 can remain undeformed by adjusting the irradiation with visible light and ultraviolet light, while the second deformable portion 1212 bends around the first deformable portion 1211 and undergoes overall displacement. It is understood that the first deformable portion 1211 and the second deformable portion 1212 are formed of the same material, i.e., both are formed of a liquid crystal elastomer material doped with conductors.

[0058] Specifically, the angle between the length direction of the second deformable portion 1211 and the normal direction of the substrate 110 is a first angle α. Under ultraviolet light irradiation, the first angle α gradually increases, thereby increasing the radial width of the deformable structure 121. Continuing from the above, the first deformable portion 1211 and the second deformable portion 1212 are continuously arranged, and at the connection between the first deformable portion 1211 and the second deformable portion 1212, the length direction of the first deformable portion 1211 and the length direction of the second deformable portion 1212 form a certain angle.

[0059] The length direction of the second deformable portion 1212 extends from the side of the second deformable portion 1212 away from the first deformable portion 1211 to the side of the second deformable portion 1212 closer to the first deformable portion 1211. In other words, in the cross-sectional shape along the section line between two adjacent light-emitting units 140, this length direction is from one end of the second deformable portion 1212 to the other end. The second deformable portion 1212 undergoes bending deformation under ultraviolet light irradiation, and the bending deformation is in the direction away from the side of the fixed structure 122, so that the angle of the first included angle α increases.

[0060] Figure 6 This is a deformation diagram of the deformable structure according to the second embodiment of this application. See also: Figure 6 As shown, the bending angle between the second deformable portion 1212 and the first deformable portion 1211 is shifted mainly by adjusting the visible light and ultraviolet light irradiated onto the deformable structure 121. In a specific embodiment, visible light irradiation can be applied to the first deformable portion 1211 and ultraviolet light irradiation can be applied to the second deformable portion 1212 during the formation of the light-emitting functional layer 142. Based on the above, the second deformable portion 1212 will bend under ultraviolet light. The deformation of the second deformable portions 1212 on both sides of the first deformable portion 1211 often causes slight deformation of the first deformable portion 1211. In order to prevent the first deformable portion 1211 from becoming unstable, visible light is applied to the first deformable portion 1211 to restore its deformation.

[0061] In this process, the deformation of the second deformation part 1212 is controlled by ultraviolet light, and the deformation of the first deformation part 1211 is controlled by visible light to prevent deformation. This makes the second deformation part 1212 use the connection between the first deformation part 1211 and the second deformation part 1212 as a pivot, thereby controlling the second deformation part 1212 to bend along the pivot, thereby changing the angle of the first included angle α.

[0062] The accompanying drawings are for illustrative purposes only. When the first included angle α changes, the second deformable part 1212 will also bend to a certain extent. However, when the first included angle α changes, the overall radial width of the deformable structure 121 will increase. That is, the radial width is controlled to increase by changing the angle through bending.

[0063] Figure 7 This is a schematic diagram of the first and second filter structures according to the second embodiment of this application, in conjunction with... Figures 4 to 7 As shown, the display panel 100 further includes a plurality of first filter structures 131 and a plurality of second filter structures 132, which are respectively disposed under the plurality of fixed structures 122. On the orthographic projection of the substrate 110, the first filter structure 131 coincides with the first deformation portion 1211, and the second filter structure 132 coincides with the second deformation portion 1212. The first filter structure 131 is used to block ultraviolet light and filter visible light; the second filter structure 132 is used to block visible light and filter ultraviolet light; the first deformation portion 1211 is used to recover its deformation under visible light irradiation, and the second deformation portion 1212 is used to undergo bending deformation under ultraviolet light irradiation.

[0064] In this embodiment, by providing a filter structure, such as a first filter structure 131 and a second filter structure 132, between the substrate 110 and the deformation structure 121, only a light source needs to be provided during the formation of the light-emitting functional layer 142. The first filter structure 131 and the second filter structure 132 control the incoming light. Specifically, for multiple display panels 100 on a large board, the effective light-emitting area of ​​the light-emitting units 140 at different positions can be adjusted by changing the intensity of the light source, thereby improving the problem of inconsistent luminous efficiency of the display panels 100 at different positions. It is understood that during the light source enhancement process, the angle α of the first included angle will increase to reduce the area of ​​the light-emitting functional layer 142.

[0065] In one specific embodiment, the first filter structure 131 and the second filter structure 132 can be disposed between the pixel definition layer 111 and the substrate 110.

[0066] Specifically, the top electrode 143 is in direct contact with the deformation structure 121; the light-emitting functional layers 142 of two adjacent light-emitting units 140 are separated by the deformation structure 121 and the fixing structure 122; the bottom electrodes 141 of two adjacent light-emitting units 140 are separated by the pixel definition layer 111.

[0067] The light-emitting functional layer 142 and the deformable structure 121 are separated by the top electrode 143. Generally, the initial state of the deformable structure 121 can be set so that the separating structure 120 cannot separate the top electrode 143. It is understood that the deformable structure 121 also has a separating capability in its initial state, but by setting the thickness of the top electrode 143, it can be prevented from breaking. During the formation of the top electrode 143, the top electrode 143 needs to be laid out across the entire surface to prevent it from being separated. Furthermore, the conductivity of the deformable structure 121 can be used to reduce the impedance of the top electrode 143. In other words, even if the top electrode 143 is separated, direct contact between the top electrode 143 and the deformable structure 121 allows the deformable structure 121 to connect the separated top electrode 143.

[0068] Wherein, the length of the second deformable portion 1212 in the longitudinal direction is less than the length of the fixing structure 122 in the normal direction of the substrate 110. The length of the second deformable portion 1212 in the longitudinal direction is the cross-sectional length of the second deformable portion 1212, and the length of the fixing structure 122 in the normal direction of the substrate 110 is the cross-sectional thickness of the fixing structure 122.

[0069] Specifically, the fixed structure 122 can be formed of an organic material, with a thickness between 2 μm and 3 μm, while the corresponding deformation structure 121 has a thickness between 1 μm and 1.5 μm. The initial angle of the first included angle α ranges from 30 degrees to 70 degrees. Specifically, on the orthographic projection of the substrate 110, the width of the second filter structure 132 is slightly wider than that of the deformation structure 121, with each side being 0.5 μm to 1 μm wider.

[0070] Figure 8 This is a schematic diagram of the light-shielding layer according to the second embodiment of this application, in conjunction with... Figures 4 to 8 As shown, the display panel 100 also includes a light-shielding layer 150, which is disposed on the deformable structure 121 and is used to block ultraviolet light entering from the side of the deformable structure 121 away from the substrate 110.

[0071] In this embodiment, considering that some light from the external environment enters the display panel 100 during display, causing deformation of the deformation structure 121, a light-shielding part is provided on the deformation structure 121 to prevent external ultraviolet light from affecting it. Of course, when visible light and ultraviolet light act on the deformation structure 121 simultaneously, the intensity of the visible and ultraviolet light needs to be considered. When the intensity of visible light is high, the deformation structure 121 will not deform; only when the intensity of ultraviolet light is high will the deformation structure 121 deform.

[0072] When the display panel 100 uses a color filter instead of a polarizer, the light-shielding layer 150 is shared with the black matrix in the color filter. Alternatively, to better ensure the light-shielding effect, the light-shielding layer 150 can be formed between the encapsulation layer and the deformable structure 121. The radial width of any of the above-mentioned light-shielding layers 150 can be slightly larger than the radial width of the deformable structure 121 in its initial state, but smaller than the maximum radial width of the deformable structure 121 after deformation.

[0073] Figure 9 This is a schematic diagram illustrating the manufacturing method of the display panel of this application. See also: Figure 9 As shown, this application also discloses a method for manufacturing a display panel, including the following steps:

[0074] S110: A substrate is provided. The substrate may be a flexible substrate or a rigid substrate, and the display panel in this embodiment may also be a flexible display panel.

[0075] S120: A pixel definition layer is formed on the substrate, and multiple openings are formed to form multiple sub-pixel regions. A pixel driving layer of light-emitting units is generally formed between the substrate and the pixel definition layer. This pixel driving layer generally includes a pixel driving circuit composed of thin-film transistors and driving lines.

[0076] S130: A fixed structure film layer and a deformable structure film layer are sequentially formed on the pixel definition layer, and multiple partition structures are formed after patterning.

[0077] The deformable structure is disposed on the fixed structure, and the radial width of the deformable structure is greater than the radial width of the fixed structure. In this embodiment, the deformable structure is formed using a carbon-doped conductive elastic liquid crystal material, and the fixed structure can be formed using an organic material. A partition structure that is wider at the top and narrower at the bottom can be formed through deposition and etching.

[0078] S140: Provide ultraviolet or visible light to irradiate at least one of the partition structures, causing the deformation structure of the partition structure to deform, thereby increasing or decreasing the radial width of the deformation structure. Referring to the above embodiments, when there is a region where the light-emitting unit needs to be changed, ultraviolet light is applied to that region, causing the deformation structure in one or more partition structures within that region to deform, thereby adjusting the effective light-emitting area of ​​the light-emitting unit.

[0079] S150: Multiple light-emitting units are formed in multiple sub-pixel areas using multiple partition structures, and two adjacent light-emitting units are separated by the partition structures.

[0080] S160: Forming the display panel. This step also includes forming subsequent film layers such as an encapsulation layer to complete the fabrication of the display panel.

[0081] In this embodiment, by setting a deformable partition structure in the non-opening area, and controlling the radial width of the deformable structure at different positions in the non-opening area during the formation of the light-emitting unit, the area of ​​the light-emitting unit at different positions can be controlled. By controlling the radial width of the deformable structure within the partition structure, the light-emitting area of ​​the light-emitting unit can be controlled. When different positions of the display panel exhibit different luminous efficiencies, the luminous efficiency of the corresponding light-emitting unit can be changed by controlling the radial width of the deformable structure at that position, thereby solving the problem that the luminous efficiency of products at different stages is affected by different production lines and film formation quality. Compared to a fixed partition structure, redesigning the partition structure is costly when different light-emitting areas of light-emitting units are required. This application, through a deformable structure with adjustable opening size, allows for adjustment of the radial width of the deformable structure at different positions according to different needs during actual manufacturing, thereby producing display panels with different light-emitting areas and significantly reducing product development costs.

[0082] The step after S140 is completed includes: removing the ultraviolet light and irradiating the partition structure with visible light so that the deformed structure can recover its deformation.

[0083] In this embodiment, by changing the input light source, removing the light source with ultraviolet light, and irradiating the partition structure with a single beam of visible light, the deformed structure can be restored to its original shape. Particularly in the second embodiment, by adjusting the mixed light source with ultraviolet and visible light to a single visible light source, the second deformed part no longer bends, thus fitting snugly against the side of the fixed structure to ensure the stability of the film layer and prevent subsequent film rupture. When the deformed structure returns to its initial state, the second deformed part is in direct contact with and completely adheres to the side of the fixed structure.

[0084] Figure 10 This is a schematic diagram of the display device of this application, see below. Figure 10 As shown, this application also discloses a display device 200, which includes a driving circuit 210 and a display panel 100. The display panel 100 can be the display panel 100 in any of the above embodiments, wherein the driving circuit 210 is used to drive the display panel 100 to display.

[0085] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0086] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: Substrate; A pixel definition layer is disposed on the substrate and has multiple openings to form multiple sub-pixel regions; Multiple partition structures are disposed on the pixel definition layer; as well as Multiple light-emitting units are respectively disposed in multiple sub-pixel areas, and two adjacent light-emitting units are separated by the partition structure; The partition structure includes a fixed structure and a deformable structure. The deformable structure is disposed on the fixed structure, and the radial width of the deformable structure is greater than the radial width of the fixed structure. The deformation structure is used to separate the film layers of two adjacent light-emitting units when forming the light-emitting unit, and the deformation structure is also used to change the radial width of the deformation structure by controlling the irradiation of ultraviolet light or visible light when forming the light-emitting unit to cause the deformation structure to deform or recover its deformation. The deformation structure includes a first deformation part and a plurality of second deformation parts, the plurality of second deformation parts being respectively disposed on a plurality of sides of the first deformation part; the first deformation part is disposed on the top surface of the fixed structure, and the second deformation parts are disposed on the sides of the fixed structure; The angle between the length direction of the second deformed portion and the normal direction of the substrate is the first angle; under ultraviolet light irradiation, the first angle gradually increases, thereby increasing the radial width of the deformed structure. Wherein, the length direction of the second deformable part is from the side of the second deformable part away from the first deformable part to the side of the second deformable part close to the first deformable part; The display panel further includes a plurality of first filter structures and a plurality of second filter structures, wherein the plurality of first filter structures and the plurality of second filter structures are respectively disposed under the plurality of fixed structures; On the orthographic projection of the substrate, the first filter structure coincides with the first deformed portion, and the second filter structure coincides with the second deformed portion; The first filter structure is used to block ultraviolet light and allow visible light to pass through; the second filter structure is used to block visible light and allow ultraviolet light to pass through. The first deformation part is used to prevent deformation under visible light irradiation, and the second deformation part is used to undergo bending deformation under ultraviolet light irradiation.

2. The display panel according to claim 1, characterized in that, The deformable structure is formed using a liquid crystal elastomer material doped with conductors. The deformable structure is designed to undergo bending deformation under ultraviolet light irradiation, thereby increasing the radial width of the deformable structure, and to recover its deformation under visible light irradiation.

3. The display panel according to claim 1, characterized in that, Within the multiple sub-pixel regions, at least two of the light-emitting units have different light-emitting areas; In multiple partition structures, the radial width of the deformable structure is the same.

4. The display panel according to claim 1, characterized in that, The light-emitting unit includes a bottom electrode, a light-emitting functional layer, and a top electrode. The light-emitting functional layer is disposed between the bottom electrode and the top electrode, and the top electrode is disposed on the side of the bottom electrode away from the substrate. The top electrode is in direct contact with the deformable structure; the light-emitting functional layers of two adjacent light-emitting units are separated by the deformable structure and the fixed structure. The light-emitting functional layer and the deformable structure are separated by the top electrode; The display panel further includes a light-shielding layer disposed on the deformable structure for blocking ultraviolet light incident from the side of the deformable structure away from the substrate.

5. The display panel according to claim 1, characterized in that, The length of the second deformed portion in the longitudinal direction is less than the length in the normal direction of the substrate of the fixed structure.

6. A method for manufacturing a display panel, characterized in that, The manufacturing method includes the following steps: Provide a substrate; A pixel definition layer is formed on the substrate, and multiple openings are formed to form multiple sub-pixel regions; A fixed structure film layer and a deformable structure film layer are sequentially formed on the pixel definition layer, and after patterning, multiple partition structures are formed; wherein, the deformable structure is disposed on the fixed structure, and the radial width of the deformable structure is greater than the radial width of the fixed structure; An ultraviolet light is provided to irradiate at least one of the partition structures, causing the deformable structure of the partition structure to deform, thereby increasing the radial width of the deformable structure; Multiple light-emitting units are formed in multiple sub-pixel regions using multiple partition structures, and two adjacent light-emitting units are separated by the partition structures; Form a display panel.

7. The method for manufacturing a display panel according to claim 6, characterized in that, After the step of forming multiple light-emitting units in multiple sub-pixel regions using multiple partition structures, and separating two adjacent light-emitting units by the partition structures, the method further includes: Remove the ultraviolet light and irradiate the partition structure with visible light so that the deformed structure can recover its deformation.

8. A display device, characterized in that, The device includes a driving circuit and a display panel as described in any one of claims 1-5, wherein the driving circuit is used to drive the display panel to display.

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