Display panel, display device and mask plate set

Abstract

The application discloses a display panel, a display device and a mask plate group. The display panel comprises: each repeating unit comprises at least one first light emitting unit, at least four second light emitting units and at least four third light emitting units; the at least one first light emitting unit is located in a preset area of the repeating unit, and the second light emitting units and the third light emitting units are arranged around the preset area; at least two of the second light emitting units are arranged on one side of a first edge, and at least two of the second light emitting units are arranged on one side of a second edge; at least two of the third light emitting units are arranged on one side of a third edge, and at least two of the third light emitting units are arranged on one side of a fourth edge. The embodiment of the application reduces the manufacturing difficulty of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel, a display device, and a mask assembly. Background Technology

[0002] Organic light-emitting diode (OLED) display panels have advantages such as self-illumination, low driving voltage, high luminous efficiency, fast response speed, thinness and lightness, and high contrast. They are increasingly being used in mobile phones, computers and other devices with display functions.

[0003] However, existing OLED panels face significant manufacturing challenges. Summary of the Invention

[0004] This invention provides a display panel, a display device, and a mask assembly to reduce the manufacturing difficulty of the display panel.

[0005] According to one aspect of the present invention, a display panel is provided, comprising:

[0006] A substrate and a plurality of repeating units arranged in an array on the substrate;

[0007] Each repeating unit includes at least one first light-emitting unit, at least four second light-emitting units, and at least four third light-emitting units, wherein the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit emit different colors; the at least one first light-emitting unit is located in a preset area of ​​the repeating unit, and the second and third light-emitting units are arranged around the preset area;

[0008] The preset area includes a first side and a second side arranged opposite to each other, the first side and the second side extending along a first direction; at least two second light-emitting units are disposed on one side of the first side and at least two second light-emitting units are disposed on one side of the second side;

[0009] The preset area also includes a third side and a fourth side arranged opposite to each other, the third side and the fourth side extending along a second direction, the first direction and the second direction intersecting each other; at least two third light-emitting units are disposed on one side of the third side, and at least two third light-emitting units are disposed on one side of the fourth side.

[0010] Optionally, in two adjacent repeating units along the first direction, the at least two third light-emitting units disposed on the third side of the preset region of one repeating unit and the at least two third light-emitting units disposed on the fourth side of the other repeating unit are adjacent, and there is a first gap between at least four adjacent third light-emitting units in the two adjacent repeating units along the first direction; and / or, in two adjacent repeating units along the second direction, the at least two second light-emitting units disposed on the first side of the preset region of one repeating unit and the at least two second light-emitting units disposed on the second side of the other repeating unit are adjacent, and there is a second gap between at least four adjacent second light-emitting units in the two adjacent repeating units along the second direction;

[0011] The substrate is further provided with a display compensation structure, which is disposed at least in a portion of the first gap and / or at least in a portion of the second gap.

[0012] Optionally, the adjacent apex positions of the four adjacent repeating units have a third gap, and the display compensation structure is provided at least in part of the third gap.

[0013] Optionally, in the same repeating unit, two third light-emitting units located on the same side are located on both sides of the first gap along the second direction, and the distance between two adjacent sides of the two third light-emitting units on the same side gradually increases in the direction away from the preset area.

[0014] In the same repeating unit, two second light-emitting units located on the same side are located on both sides of the second gap along the first direction, and the distance between the two adjacent sides of the two second light-emitting units on the same side gradually increases in the direction away from the preset area.

[0015] Optionally, in the same repeating unit, the adjacent sides of the second light-emitting unit and the adjacent first light-emitting unit are parallel to each other, the adjacent sides of the second light-emitting unit and the adjacent third light-emitting unit are parallel to each other, and the adjacent sides of the third light-emitting unit and the adjacent first light-emitting unit are parallel to each other.

[0016] The adjacent edges of the third light-emitting units adjacent along the first direction are parallel to each other, and the adjacent edges of the second light-emitting units adjacent along the second direction are parallel to each other; when the same repeating unit includes at least two first light-emitting units, the adjacent edges of the first light-emitting units are parallel to each other.

[0017] Optionally, within the same repeating unit: the at least two second light-emitting units disposed on one side of the first side are symmetrical with respect to the at least two second light-emitting units disposed on one side of the second side, and the at least two second light-emitting units disposed on one side of the first side are symmetrical with respect to the second line of symmetry; and / or, the at least two third light-emitting units disposed on one side of the third side are symmetrical with respect to the at least two third light-emitting units disposed on one side of the fourth side, and the at least two third light-emitting units disposed on one side of the third side are symmetrical with respect to the first line of symmetry; wherein, the first line of symmetry extends along the first direction, and the second line of symmetry extends along the second direction.

[0018] Optionally, each repeating unit includes four first light-emitting units, four second light-emitting units, and four third light-emitting units, wherein the first light-emitting units are rectangular, and the second and third light-emitting units are parallelograms or trapezoids.

[0019] Optionally, the display compensation structure includes a support column and / or a compensation light-emitting unit;

[0020] Optionally, the display panel further includes a rigid encapsulation layer, which is disposed on the side of the repeating unit away from the substrate, and the support pillar is used to support the rigid encapsulation layer;

[0021] Optionally, all the compensation light-emitting units are the same color, or the compensation light-emitting units include light-emitting units with at least two different light-emitting colors;

[0022] Optionally, an encapsulation material layer is further disposed between the rigid encapsulation layer and the substrate. The encapsulation material layer is disposed at the edge region of the substrate and is used to fix and encapsulate the substrate and the rigid encapsulation layer; the support

[0023] According to another aspect of the present invention, a display device is provided, including the display panel described in any embodiment of the present invention.

[0024] According to another aspect of the present invention, a mask assembly is provided for forming a display panel as described in any embodiment of the present invention, the mask assembly comprising:

[0025] First mask, second mask, and third mask;

[0026] The first mask includes a plurality of first mask openings arranged in an array, the first mask openings being used to form at least one first light-emitting unit in a repeating unit;

[0027] The second mask includes a plurality of second mask openings arranged in an array, one of which is used to form an adjacent second light-emitting unit;

[0028] The third mask plate includes a plurality of arrayed third mask openings, one of which is used to form an adjacent third light-emitting unit;

[0029] Optionally, one of the second mask openings is used to form adjacent second light-emitting units in two adjacent repeating units, and one of the third mask openings is used to form adjacent third light-emitting units in two adjacent repeating units;

[0030] A second gap is provided between two partially adjacent second mask openings in a first direction, and a first gap is provided between two partially adjacent third mask openings in a second direction.

[0031] The display panel provided in this embodiment includes at least one first light-emitting unit, at least four second light-emitting units, and at least four third light-emitting units in each repeating unit. At least one first light-emitting unit is located in a preset area of ​​the repeating unit, and the second and third light-emitting units are arranged around the preset area. In two adjacent repeating units along a first direction, at least two third light-emitting units arranged on the third side of one repeating unit and at least two third light-emitting units arranged on the fourth side of the other repeating unit are adjacent. In two adjacent repeating units along a second direction, at least two second light-emitting units arranged on the first side of one repeating unit and at least two second light-emitting units arranged on the second side of the other repeating unit are adjacent. This arrangement allows second light-emitting units on the same side of the same repeating unit to share a mask opening, third light-emitting units on the same side of the same repeating unit to share a mask opening, adjacent second light-emitting units in adjacent repeating units to share a mask opening, and adjacent third light-emitting units in adjacent repeating units to share a mask opening. This significantly reduces the number of mask openings and lowers the manufacturing difficulty of the display panel.

[0032] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1This is a schematic diagram of a display panel provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of another display panel provided in an embodiment of the present invention;

[0037] Figure 4 yes Figure 3 A cross-sectional view of the central display panel along section line AA;

[0038] Figure 5 yes Figure 3 Another cross-sectional view of the display panel along section line AA;

[0039] Figure 6 yes Figure 3 Another cross-sectional view of the display panel along section line AA;

[0040] Figure 7 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of a display device provided in an embodiment of the present invention;

[0042] Figure 9 This is a schematic diagram of the first mask plate provided in an embodiment of the present invention;

[0043] Figure 10 This is a schematic diagram of the second mask plate provided in an embodiment of the present invention;

[0044] Figure 11 This is a schematic diagram of the third mask provided in an embodiment of the present invention. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] This invention provides a display panel. Figure 1 This is a schematic diagram of a display panel provided in an embodiment of the present invention, for reference. Figure 1 The display panel includes:

[0048] Substrate 100 and a plurality of repeating units 10 arranged in an array on substrate 100;

[0049] Each repeating unit 10 includes at least one first light-emitting unit 21, at least four second light-emitting units 22 and at least four third light-emitting units 23, wherein the first light-emitting unit 21, the second light-emitting unit 22 and the third light-emitting unit 23 emit different colors; at least one first light-emitting unit 21 is located in a preset area of ​​the repeating unit 10, and the second light-emitting units 22 and the third light-emitting units 23 are arranged around the preset area;

[0050] The preset area includes a first side 11 and a second side 12 that are arranged opposite to each other, the first side 11 and the second side 12 extending along a first direction X; at least two second light-emitting units 22 are disposed on one side of the first side 11 and at least two second light-emitting units 22 are disposed on one side of the second side 12.

[0051] The preset area also includes a third side 13 and a fourth side 14 that are arranged opposite to each other. The third side 13 and the fourth side 14 extend along the second direction Y, and the first direction X and the second direction Y intersect each other. At least two third light-emitting units 23 are arranged on one side of the third side 13 and at least two third light-emitting units 23 are arranged on one side of the fourth side 14.

[0052] The substrate 100 can be an array substrate for driving the light-emitting units to emit light. The substrate 100 may include a substrate and a driving circuit layer disposed on the substrate. The driving circuit layer includes multiple pixel driving circuits, each pixel driving circuit corresponding to a light-emitting unit, used to drive the corresponding light-emitting unit to emit light. The first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 emit different colors. For example, the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 are respectively a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit. Optionally, the first light-emitting unit 21 is a blue light-emitting unit, and one of the second light-emitting unit 22 and the third light-emitting unit 23 is a green light-emitting unit, and the other is a red light-emitting unit. For example, the first light-emitting unit 21 is a blue light-emitting unit, the second light-emitting unit 22 is a green light-emitting unit, and the third light-emitting unit 23 is a red light-emitting unit. The shapes of the first light-emitting unit 21, the second light-emitting unit 22, and the third light-emitting unit 23 can be the same or different. For example, the shapes of the three light-emitting units can be quadrilaterals (such as squares, rectangles, parallelograms, trapezoids), pentagons, or other polygons. The number of first light-emitting units 21, second light-emitting units 22 and third light-emitting units 23 in a repeating unit 10 can be the same or different. This embodiment does not make a specific limitation. For example, the number of first light-emitting units 21, second light-emitting units 22 and third light-emitting units 23 in a repeating unit 10 can all be four. One first light-emitting unit 21, one second light-emitting unit 22 and one third light-emitting unit 23 constitute one pixel unit. That is, a repeating unit 10 can include four pixel units.

[0053] It should be noted that the preset area is a certain area of ​​the repeating unit 10. Specifically, the preset area can be the central area of ​​the repeating unit 10 or an area off-center from the center of the repeating unit 10, and is not specifically limited here. In addition, the repeating unit 10 includes at least one light-emitting unit 21, which can include one, two, three, four or more first light-emitting units 21. The specific number of first light-emitting units 21 is not specifically limited in this embodiment. For example, when a repeating unit 10 includes one, two or three first light-emitting units 21, multiple pixel units can be formed by reusing the first light-emitting units 21 with at least four second light-emitting units 22 and at least four third light-emitting units 23 for display.

[0054] Specifically, the light-emitting unit in a display panel typically includes a first electrode layer, a second electrode layer, and an organic light-emitting layer disposed between the first electrode layer and the second electrode layer. The light-emitting unit in this embodiment can include two forms:

[0055] One type uses organic light-emitting layers of different colors for light-emitting units. For example, a red light-emitting unit uses a red organic light-emitting layer, which emits red light directly under the excitation of electrical signals on the first and second electrode layers. This type of light-emitting unit's organic light-emitting layer is typically fabricated using a vapor deposition process. This process requires a mask with multiple openings. During vapor deposition, the organic light-emitting material passes through these openings to reach the corresponding position on the substrate 100, forming an organic light-emitting layer of the corresponding color.

[0056] Another approach involves using a white organic light-emitting layer for each color of the light-emitting unit, with a corresponding color resist block on the light-emitting side. The color resist block filters the white light, allowing light of a specific color to be emitted. In this case, the light-emitting unit comprises a white light-emitting structure and a corresponding color resist block. For example, for a green light-emitting unit, a white light-emitting structure (including a first electrode layer, a second electrode layer, and a white organic light-emitting layer) can be formed first. Then, a green color resist block is placed on the light-emitting side of the white light-emitting structure. When the white light emitted by the white light-emitting structure illuminates the green color resist block, only green light is emitted. Therefore, the white light-emitting structure and the corresponding green color resist block constitute a single green light-emitting unit. When forming a color resist block of a particular color, a single color resist layer is typically formed first, and then etched into multiple color resist blocks using photolithography. The position of each color resist block is determined by the position of the light-emitting unit. The photolithography process requires a photomask, with one photomask opening corresponding to one color resist block.

[0057] In existing display panel manufacturing, one light-emitting unit corresponds to one mask opening, resulting in a large number of mask openings on the mask, increasing the manufacturing difficulty of the mask and consequently making the display panel manufacturing more complex. In this embodiment, second light-emitting units 22 located on the same side of the same repeating unit can share a mask opening, and third light-emitting units 23 located on the same side can also share a mask opening. When the second light-emitting units 22 of adjacent repeating units 10 along the second direction Y are adjacent on the first side 11 and the second side 12, the adjacent second light-emitting units 22 can also share a mask opening. Similarly, when the third light-emitting units 23 of adjacent repeating units 10 along the first direction X are adjacent on the third side 13 and the fourth side 14, the adjacent third light-emitting units 23 can also share a mask opening. Therefore, the number of mask openings used in the display panel manufacturing of this embodiment can be greatly reduced, lowering the manufacturing difficulty of the mask and thus reducing the overall manufacturing difficulty of the display panel.

[0058] The display panel provided in this embodiment of the invention includes at least one first light-emitting unit, at least four second light-emitting units, and at least four third light-emitting units in each repeating unit. At least one first light-emitting unit is located in a preset area of ​​the repeating unit, which includes a first side, a second side, a third side, and a fourth side. The second and third light-emitting units are arranged around the preset area, with at least two second light-emitting units disposed on one side of the first side, at least two second light-emitting units disposed on one side of the second side, at least two third light-emitting units disposed on one side of the third side, and at least two third light-emitting units disposed on one side of the fourth side. Second light-emitting units 22 on the same side of the same repeating unit can share a mask opening, as can third light-emitting units 23 on the same side of the same repeating unit. Adjacent second light-emitting units in adjacent repeating units can share a mask opening, and adjacent third light-emitting units in adjacent repeating units can share a mask opening. Therefore, the display panel of this embodiment can significantly reduce the number of mask openings, reduce the manufacturing difficulty of the mask, and thus reduce the manufacturing difficulty of the display panel.

[0059] Furthermore, when a repeating unit includes at least two first light-emitting units 21, the at least two first light-emitting units can share a mask opening.

[0060] Optionally, a repeating unit 10 includes at least four first light-emitting units 21, and the at least four first light-emitting units 21 are located in a preset area of ​​the repeating unit 10. The at least four first light-emitting units 21 may share a mask opening.

[0061] Figure 2 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Optional, see reference. Figure 2 In two adjacent repeating units 10 along the first direction X, at least two third light-emitting units 23 provided on the third side 13 of one repeating unit 10 and at least two third light-emitting units 23 provided on the fourth side 14 of the other repeating unit 10 are adjacent, and there is a first gap 31 between at least four adjacent third light-emitting units 23 in the two adjacent repeating units 10 along the first direction X; and / or, in two adjacent repeating units 10 along the second direction Y, at least two second light-emitting units 22 provided on the first side 11 of one repeating unit 10 and at least two second light-emitting units 22 provided on the second side 12 of the other repeating unit 10 are adjacent, and there is a second gap 32 between at least four adjacent second light-emitting units 22 in the two adjacent repeating units 10 along the second direction Y;

[0062] The substrate 100 is also provided with a display compensation structure 40, which is disposed at least in a portion of the first gap 31 and / or at least in a portion of the second gap 32.

[0063] Specifically, the inventors discovered that OLED display panels still suffer from poor display quality. The reasons for this uneven display include the following two points: First, existing OLED display panels using rigid encapsulation layers typically incorporate SPCs (Spacers) to support the rigid encapsulation layer. The rigid encapsulation layer and the array substrate are sealed together using a frit (sealing adhesive), which is usually located at the edge of the rigid encapsulation layer and the array substrate. Due to the limited space within the display panel for the SPCs, the height of the SPCs cannot be perfectly matched to the height of the frit. Therefore, the rigid encapsulation layer deforms under gravity and atmospheric pressure, causing the central area of ​​the rigid encapsulation layer to concave inward, forming a curved surface. When light shines from the cover plate onto the display panel, the different optical path differences at different locations cause light interference, resulting in Newton's rings, which affects the display panel's performance. Second, the luminous efficiency of different color light-emitting sub-pixels within some display panels varies, leading to color shifts that easily occur over time, affecting the display panel's performance.

[0064] Since at least one first light-emitting unit 21 located in the preset area of ​​the repeating unit 10 can use the same mask opening. In two adjacent repeating units 10 along the first direction X, at least two third light-emitting units 23 arranged on the third side 13 of one repeating unit 10 and at least two third light-emitting units 23 arranged on the fourth side 14 of the other repeating unit 10 are adjacent. This can be a one-to-one correspondence between the third light-emitting units 23 on the third side 13 and the third light-emitting units 23 on the fourth side 14, or a one-to-two correspondence; this embodiment does not impose a specific limitation. Adjacent third light-emitting units 23 can share the same mask opening. For example, two adjacent third light-emitting units 22 located on the same side of the second gap 32 along the second direction Y can share the same mask opening. In two adjacent repeating units 10 along the second direction Y, at least two second light-emitting units 22 arranged on the first side 11 of one repeating unit 10 and at least two second light-emitting units 22 arranged on the second side 12 of the other repeating unit 10 are adjacent. This can be a one-to-one correspondence between the second light-emitting units 22 on the first side 11 and the second light-emitting units 22 on the second side 12, or a one-to-two correspondence; this embodiment does not impose a specific limitation. Adjacent second light-emitting units 23 can share the same mask opening. For example, two adjacent second light-emitting units 22 located on the same side of the first gap 31 along the first direction X can share the same mask opening.

[0065] Specifically, due to limitations in the manufacturing processes of the light-emitting units and the mask, a certain distance is required between adjacent mask openings. Therefore, reducing the number of mask openings can increase the space available for setting up light-emitting units or other structures. In this embodiment, at least one first light-emitting unit 21 in the same repeating unit 10 uses one mask opening, the second light-emitting unit 22 of one repeating unit 10 shares a mask opening with the second light-emitting unit 22 of an adjacent repeating unit 20, and the third light-emitting unit 23 of one repeating unit 10 shares a mask opening with the third light-emitting unit 23 of an adjacent repeating unit 20. This significantly reduces the number of mask openings, allowing for a larger first gap 31 between at least four adjacent third light-emitting units 23 of two adjacent repeating units 10 along the first direction X, and a larger second gap 32 between at least four adjacent second light-emitting units 22 of two adjacent repeating units 10 along the second direction Y. The first gap 31 and the second gap 32 can be used to set up a display compensation structure 40, which can be any structure that compensates for the display effect of the display panel.

[0066] For example, the display compensation structure 40 may include support pillars, which can be used to support the rigid encapsulation layer and also to support the mask plate. Because the first gap 31 and the second gap 32 are relatively large, the support pillars can be set to a larger size and height, thereby achieving a better supporting effect. When the support pillars support the rigid encapsulation layer, they can prevent the rigid encapsulation layer of the display panel from forming Newton's rings, thereby improving the display effect of the display panel.

[0067] For example, the display compensation structure 40 may include a compensation light-emitting unit to compensate for the color shift of the display panel and improve the display effect of the display panel. The light emission color of the compensation light-emitting unit can be set according to the color shift type of the display panel.

[0068] It should be noted that OLED display panels typically employ two different encapsulation methods: one using a rigid encapsulation layer and the other using a flexible encapsulation layer. Both rigid and flexible encapsulation display panels can form compensation light-emitting units at the first gap 31 and the second gap 32. For rigid encapsulation display panels, larger support pillars can be provided in the first gap 31 and the second gap 32, or compensation light-emitting units can be provided in the first gap 31 and the second gap 32, or support pillars can be provided in parts of the first gap 31 and the second gap 32, and compensation light-emitting units can be provided in parts of the first gap 31 and the second gap 32.

[0069] Each repeating unit 10 of the display panel provided in this embodiment includes at least one first light-emitting unit 21, at least four second light-emitting units 22, and at least four third light-emitting units 23; at least one first light-emitting unit 21 is located in a preset area of ​​the repeating unit 10, and the second light-emitting units 22 and the third light-emitting units 23 are arranged around the preset area; in two adjacent repeating units 10 along the first direction X, at least two third light-emitting units 23 arranged on the third side 13 of one repeating unit 10 and at least two third light-emitting units 23 arranged on the fourth side 14 of the other repeating unit 10 are adjacent; in two adjacent repeating units 10 along the second direction Y, at least two second light-emitting units 22 arranged on the first side 11 of one repeating unit 10 and at least two second light-emitting units 22 arranged on the second side 12 of the other repeating unit 10 are adjacent. The above arrangement allows the second light-emitting unit 22 of a repeating unit 10 to share a mask opening with the second light-emitting unit 22 of an adjacent repeating unit 20, and the third light-emitting unit 23 of a repeating unit 10 to share a mask opening with the third light-emitting unit 23 of an adjacent repeating unit 20. This significantly reduces the number of mask openings, resulting in a larger first gap 31 between at least four adjacent third light-emitting units 23 of two adjacent repeating units 10 along the first direction X, and a larger second gap 32 between at least four adjacent second light-emitting units 22 of two adjacent repeating units 10 along the second direction Y. Therefore, the solution implemented in this invention can form a larger gap on the display panel while ensuring that the pixel density of the display panel is not affected. A display compensation structure 40 can be set at the gap according to the display needs of the display panel to improve the display effect of the display panel.

[0070] Figure 3 This is a schematic diagram of another display panel provided in an embodiment of the present invention. Optional, see reference. Figure 3 The adjacent apex positions of the four adjacent repeating units 10 have a third gap 33, and a display compensation structure 40 is provided at least part of the third gap 33.

[0071] In this configuration, the adjacent apex positions of the four adjacent repeating units 10 are adjacent positions of multiple second light-emitting units 22 and third light-emitting units 23. By reasonably setting the shapes of the second light-emitting units 22 and third light-emitting units 23, the third gap 33 can have a larger size. In addition, since the size of the mask opening is generally larger than the size of the corresponding light-emitting unit, the shape of the mask opening around the apex can also be set to increase the third gap 33, for example, by setting a chamfer on the mask opening.

[0072] Optional, continue to refer to Figure 3In the same repeating unit 10, two third light-emitting units 23 located on the same side are located on both sides of the first gap 31 along the second direction Y, and the distance between the two adjacent sides of the two third light-emitting units 23 on the same side gradually increases in the direction away from the preset area.

[0073] In any repeating unit 10, on one side of the fourth edge 14, the two third light-emitting units 23 located on both sides of the first gap 31 have their adjacent edges gradually increasing in the direction away from the preset area. Similarly, in any repeating unit 10, on one side of the third edge 13, the two third light-emitting units 23 located on both sides of the first gap 31 have their adjacent edges gradually increasing in the direction away from the preset area. This results in a large distance between the third units 23 at the adjacent boundaries of two adjacent repeating units 10 along the first direction X, making the shape of the first gap 31 similar to or rhomboid, and giving it a large size.

[0074] Optionally, in the same repeating unit 10, two second light-emitting units 22 located on the same side are located on both sides of the second gap 32 along the first direction X, and the distance between the two adjacent sides of the two second light-emitting units 22 on the same side gradually increases in the direction away from the preset area.

[0075] In any repeating unit 10, on one side of the first edge 11, the two second light-emitting units 22 located on both sides of the second gap 32 have their adjacent edges gradually increasing in size along the direction away from the preset area. Similarly, in any repeating unit 10, on one side of the second edge 12, the two second light-emitting units 22 located on both sides of the second gap 32 have their adjacent edges gradually increasing in size along the direction away from the preset area. This results in a large distance between the second units 22 at the adjacent boundaries of two adjacent repeating units 10 along the second direction Y, making the shape of the second gap 32 resemble a rhombus and have a large size.

[0076] Optionally, in the same repeating unit 10, the adjacent sides of the second light-emitting unit 22 and the adjacent first light-emitting unit 21 are parallel to each other; the adjacent sides of the second light-emitting unit 22 and the adjacent third light-emitting unit 23 are parallel to each other; and the adjacent sides of the third light-emitting unit 23 and the adjacent first light-emitting unit 21 are parallel to each other.

[0077] For details, please refer to Figure 3At the first side 11 and the third side 12 of the repeating unit 10, the adjacent sides of each first light-emitting unit 21 and its adjacent second light-emitting unit 22 are parallel to each other. This arrangement makes the gap between the first light-emitting unit 21 and the second light-emitting unit 22 have the same width along the second direction Y. Therefore, the gap width can be smaller. For example, it is sufficient to meet the minimum gap requirement. This can reduce the space occupied by the gap between the first light-emitting unit 21 and the second light-emitting unit 22, so that the second gap 32 can be larger.

[0078] Similarly, at the third side 13 and the fourth side 14 of the repeating unit 10, the adjacent sides of each first light-emitting unit 21 and its adjacent third light-emitting unit 23 are parallel to each other. This arrangement makes the gap between the first light-emitting unit 21 and the third light-emitting unit 23 have the same width along the first direction X. Therefore, the gap width can be smaller. For example, it is sufficient to meet the minimum gap requirement. This can reduce the space occupied by the gap between the first light-emitting unit 21 and the third light-emitting unit 23, so that the first gap 31 can be larger.

[0079] Furthermore, at the top corner of the repeating unit 10, the adjacent sides of the second light-emitting unit 22 and the third light-emitting unit 23 are parallel to each other, so that the width of the gap between the second light-emitting unit 22 and the third light-emitting unit 23 is the same. Therefore, the width of the gap can be smaller. For example, it is sufficient to meet the minimum gap requirement. This can reduce the space occupied by the gap between the first light-emitting unit 21 and the third light-emitting unit 23, so that the third gap 33 can be larger.

[0080] Optionally, the adjacent sides of the third light-emitting unit 23 adjacent along the first direction X are parallel to each other, and the adjacent sides of the second light-emitting unit 22 adjacent along the second direction Y are parallel to each other; when the same repeating unit includes at least two first light-emitting units, the adjacent sides of the first light-emitting units 21 are parallel to each other.

[0081] This configuration makes the shape of the mask opening shared by two adjacent third light-emitting units 23 along the first direction X more regular, occupies less area, and is more conducive to the fabrication and meshing of the mask. Furthermore, while maintaining the light-emitting area of ​​the third light-emitting unit 23, the space occupied by the third light-emitting unit 23 is reduced, allowing the first gap 31 to be larger. Similarly, this configuration makes the shape of the mask opening shared by two adjacent second light-emitting units 22 along the second direction Y more regular, occupies less area, and is more conducive to the fabrication and meshing of the mask. Furthermore, while maintaining the light-emitting area of ​​the second light-emitting unit 22, the space occupied by the second light-emitting unit 22 is reduced, allowing the second gap 32 to be larger. Moreover, when each repeating unit 10 is provided with at least two first light-emitting units 21, the area occupied by at least two first light-emitting units 21 is smaller. While maintaining the light-emitting area of ​​the first light-emitting unit 21, the space occupied by the first light-emitting unit 22 is reduced, allowing the first gap 31 and the second gap 32 to be larger.

[0082] Optionally, in the same repeating unit 10: at least two second light-emitting units 22 disposed on one side of the first side 11 are symmetrical with respect to the first symmetry line 51 and at least two second light-emitting units 22 disposed on one side of the second side 12 are symmetrical with respect to the second symmetry line 52; and / or, at least two third light-emitting units 23 disposed on one side of the third side 13 are symmetrical with respect to the second symmetry line 52 and at least two third light-emitting units 23 disposed on one side of the fourth side 14 are symmetrical with respect to the second symmetry line 52, and at least two third light-emitting units 23 disposed on one side of the third side 13 are symmetrical with respect to the first symmetry line 51, wherein the first symmetry line 51 extends along the first direction X and the second symmetry line 52 extends along the second direction Y.

[0083] Specifically, at least two second light-emitting units 22 disposed on one side of the first side 11 are symmetrical with respect to the first symmetry line 51 and at least two second light-emitting units 22 disposed on one side of the second side 12. At least two second light-emitting units 22 disposed on one side of the first side 11 are symmetrical with respect to the second symmetry line 52, so that the four second light-emitting units 22 along the same repeating unit 10 have the same shape. This makes the mask openings used for the second light-emitting units 22 on both sides of the second gap 32 have the same shape, and makes the mask openings used for the production of the second light-emitting units 22 on the entire display panel have the same shape. This reduces the manufacturing difficulty of the mask plate and avoids uneven stress on the mask plate when stretching the mesh due to different mask opening sizes and shapes.

[0084] Similarly, at least two third light-emitting units 23 disposed on one side of the third side 13 are symmetrical with respect to the second symmetry line 52 and at least two third light-emitting units 23 disposed on one side of the fourth side 14. At least two third light-emitting units 23 disposed on one side of the third side 13 are symmetrical with respect to the first symmetry line 51, so that the four third light-emitting units 23 along the same repeating unit 10 have the same shape, so that the mask openings used by the third light-emitting units 22 on both sides of the first gap 31 have the same shape, so that the mask openings used to make the third light-emitting units 23 in the entire display panel have the same shape, reducing the manufacturing difficulty of the mask plate and avoiding uneven stress on the mask plate when stretching the mesh due to different mask opening sizes and shapes.

[0085] Furthermore, when the same repeating unit 10 includes at least two first light-emitting units 21, the at least two first light-emitting units 21 of the same repeating unit 10 can be symmetrically arranged with respect to the first symmetry line 51 or with respect to the second symmetry line 52. This embodiment does not make specific limitations.

[0086] Optional, see reference Figures 1-3 Each repeating unit 10 includes four first light-emitting units 21, four second light-emitting units 22 and four third light-emitting units 23. The first light-emitting unit 21 is rectangular, and the second light-emitting unit 22 and the third light-emitting unit 23 are both parallelograms or trapezoids.

[0087] This configuration allows for a more compact arrangement of multiple light-emitting units within each repeating unit 10, and the gaps between adjacent light-emitting units can be the minimum required gaps, enabling the display panel to have a higher pixel density for the same area.

[0088] Figure 4 yes Figure 3 A cross-sectional view of the central display panel along section line AA. Figure 5 yes Figure 3 Another cross-sectional view of the display panel along section line AA. Figure 6 yes Figure 2 Another cross-sectional view of the display panel along section line AA. Optional, see reference. Figures 4-6 The compensation structure includes support columns 41 ( Figure 4 ); and / or, the display compensation structure includes a compensation light-emitting unit 42 ( Figure 5 and Figure 6 ).

[0089] The display panel also includes a rigid encapsulation layer 60, which is disposed on the side of the repeating unit away from the substrate 100, and a support post 41 for supporting the rigid encapsulation layer 60.

[0090] Specifically, when the display panel is a rigid encapsulated panel, the display panel also includes a rigid encapsulation layer 60, which can be a glass substrate. By setting a display compensation structure including a support pillar 41, since the first gap, the second gap and the third gap can all have a large size, the support pillar 41 can have a large bottom area and a large height, so that the support pillar 41 can better support the rigid encapsulation layer 60, avoid the rigid encapsulation layer 60 from sinking and forming Newton's rings, and improve the display effect of the display panel.

[0091] In addition, refer to Figure 6 The display panel can also be a flexible encapsulated display panel, in which case the encapsulation layer is a flexible encapsulation layer 80, which may include inorganic and organic layers stacked at intervals. (See reference) Figures 5-6 When the display panel is a rigid encapsulated panel or a flexible encapsulated panel, the display compensation structure can be a compensation light-emitting unit 42, which is used to compensate for color deviation and other issues of the display panel, thereby improving the display effect of the display panel.

[0092] The compensation light-emitting unit 42 can be a light-emitting unit of any color. For example, when the display panel shows a cyan color, the compensation light-emitting unit 42 can include a red light-emitting unit. When the display panel shows a bluish color, the compensation light-emitting unit 42 can include a yellow light-emitting unit. The compensation light-emitting unit 42 can also include a white light-emitting unit, which can reduce the power consumption of the white screen and reduce the light loss of light-emitting units of other light-emitting colors.

[0093] Optionally, the compensation light-emitting unit 42 may include a light-emitting unit with one emission color, or it may include light-emitting units with two or more different emission colors. This can better improve the color shift of the display panel.

[0094] Optional, continue to refer to Figure 4 An encapsulation material layer 70 is also provided between the rigid encapsulation layer 60 and the substrate 100. The encapsulation material layer 70 is provided in the edge area of ​​the substrate 100 and is used to fix the encapsulation substrate 100 and the rigid encapsulation layer 60.

[0095] The surface of the support post 41 away from the substrate 100 is flush with the surface of the encapsulation material layer 70 away from the substrate 100.

[0096] Specifically, the encapsulation material layer can be made of glass. By melting and solidifying the glass encapsulation material, the substrate 100 and the rigid encapsulation layer 60 are fixed and encapsulated. After the glass encapsulation material is solidified, the encapsulation material layer 70 is formed. In the prior art, due to the limited space for the support pillar 42, the support pillar 42 cannot have a large bottom area or a large height, resulting in a height difference between the support pillar 42 and the encapsulation material layer 70, which makes the rigid encapsulation layer 60 prone to depression and the formation of Newton's rings. In this embodiment, by setting the surface of the support pillar 41 away from the substrate 100 to be flush with the surface of the encapsulation material layer 70 away from the substrate 100, the height of the support pillar 41 and the rigid encapsulation layer 60 are matched. Furthermore, the support pillar 41 in this embodiment can have a large bottom area and high support strength, which can prevent the support pillar 41 from being crushed. Therefore, the support pillar 41 in this embodiment can better support the rigid encapsulation layer 60, prevent the rigid encapsulation layer 60 from forming Newton's rings, and improve the display effect.

[0097] Optional, Figure 7 This is a cross-sectional schematic diagram of another display panel provided in an embodiment of the present invention, for reference. Figure 7 A color resist layer is disposed on the side of the rigid encapsulation layer 60 adjacent to the substrate. The color resist layer includes a first color resist block 91, a second color resist block 92, and a third color resist block 93. A plurality of white light-emitting structures 20 are disposed on the substrate 100. The first light-emitting unit 21 includes the first color resist block 91 and a white light-emitting structure 20 corresponding to the first color resist block 91. The second light-emitting unit 22 includes the second color resist block 92 and a white light-emitting structure 20 corresponding to the second color resist block 92. The third light-emitting unit 23 includes the third color resist block 93 and a white light-emitting structure 20 corresponding to the second color resist block 93.

[0098] The color resist layer also includes a compensating color resist block 94; the compensating light-emitting unit 42 includes the compensating color resist block 94 and a white light-emitting structure 20 corresponding to the compensating color resist block 94.

[0099] Specifically, the compensating color resist block 94 filters the white light emitted by the white light-emitting structure 20, allowing the desired light to escape. An exemplary compensating color resist block 94 can be a yellow color resist block, allowing only yellow light to escape. The first color resist block 91, the second color resist block 92, and the third color resist block 93 can be one of a red color resist block, a green color resist block, and a blue color resist block, respectively.

[0100] Furthermore, it should be noted that the white organic light-emitting layers of all white light-emitting structures 20 can be connected into a single layer. Each white light-emitting structure can be fabricated with a separate first electrode layer and pixel driving circuit to achieve individual driving of light emission from different white light structures. In addition, there is generally a black matrix between adjacent color resist blocks. When the compensation light-emitting unit is a white light-emitting unit, the color resist layer at its corresponding position can be without color resist blocks and black matrices, that is, the white light emitted by the white light-emitting structure 20 can directly pass through the rigid encapsulation layer 60.

[0101] This embodiment also provides a display device. Figure 8 This is a schematic diagram of a display device provided in an embodiment of the present invention, with reference to... Figure 8 The display device 200 includes the display panel 300 described in any embodiment of the present invention. The display device can be a smart display device such as a mobile phone or a tablet computer.

[0102] This embodiment also provides a mask assembly for forming the display panel described in any embodiment of the present invention. Figure 9 This is a schematic diagram of the first mask provided in an embodiment of the present invention. Figure 10 This is a schematic diagram of the second mask plate provided in an embodiment of the present invention. Figure 11 This is a schematic diagram of the third mask provided in an embodiment of the present invention, for reference. Figures 9-11 The mask assembly includes:

[0103] First mask 101, second mask 102 and third mask 103;

[0104] The first mask plate 101 includes a plurality of arrayed first mask openings 201, the first mask openings 201 being used to form at least one first light-emitting unit in a repeating unit;

[0105] The second mask plate 102 includes a plurality of arrayed second mask openings 202, one second mask opening 202 being used to form an adjacent second light-emitting unit;

[0106] The third mask plate 103 includes a plurality of arrayed third mask openings 203, one third mask opening 203 being used to form an adjacent third light-emitting unit.

[0107] Specifically, a second mask opening 202 can be used to form at least two second light-emitting units on the same side of the same repeating unit, or to form adjacent second light-emitting units in two adjacent repeating units. A third mask opening 203 can be used to form at least two third light-emitting units on the same side of the same repeating unit, or to form adjacent third light-emitting units in two adjacent repeating units. This embodiment does not make specific limitations.

[0108] Optional, see reference Figures 10-11A second mask opening 202 is used to form an adjacent second light-emitting unit in two adjacent repeating units, and a third mask opening 203 is used to form an adjacent third light-emitting unit in two adjacent repeating units.

[0109] A second gap 302 is provided between two adjacent second mask openings 202 in the first direction X, and a first gap 301 is provided between two adjacent third mask openings 203 in the second direction Y.

[0110] Specifically, the area on the display panel corresponding to the first gap 301 is the first gap, and the area on the display panel corresponding to the second gap 302 is the second gap.

[0111] In the first direction X, there is a third gap 303 between partially adjacent second mask openings 202, and in the second direction Y, there is a fourth gap 304 between two partially adjacent third mask openings 203. The combined area of ​​the third gap 303 and the fourth gap 304 is the third void in the area corresponding to the display panel.

[0112] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0113] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A display panel, characterized in that, include: A substrate and a plurality of repeating units arranged in an array on the substrate; Each repeating unit includes at least one first light-emitting unit, at least four second light-emitting units, and at least four third light-emitting units, wherein the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit emit different colors; the at least one first light-emitting unit is located in a preset area of ​​the repeating unit, and the second and third light-emitting units are arranged around the preset area; The preset area includes a first side and a second side arranged opposite to each other, the first side and the second side extending along a first direction; at least two second light-emitting units are disposed on one side of the first side and at least two second light-emitting units are disposed on one side of the second side; The preset area also includes a third side and a fourth side arranged opposite to each other, the third side and the fourth side extending along a second direction, the first direction and the second direction intersecting each other; at least two third light-emitting units are disposed on one side of the third side, and at least two third light-emitting units are disposed on one side of the fourth side; Wherein, in two adjacent repeating units along the first direction, the at least two third light-emitting units arranged on the third side of the preset region of one repeating unit and the at least two third light-emitting units arranged on the fourth side of the other repeating unit are adjacent, and there is a first gap between at least four adjacent third light-emitting units in the two adjacent repeating units along the first direction; and / or, in two adjacent repeating units along the second direction, the at least two second light-emitting units arranged on the first side of the preset region of one repeating unit and the at least two second light-emitting units arranged on the second side of the other repeating unit are adjacent, and there is a second gap between at least four adjacent second light-emitting units in the two adjacent repeating units along the second direction; The substrate is further provided with a display compensation structure, which is disposed at least in a portion of the first gap and / or at least in a portion of the second gap; In the same repeating unit, two third light-emitting units located on the same side are located on both sides of the first gap along the second direction; in the same repeating unit, two second light-emitting units located on the same side are located on both sides of the second gap along the first direction. The display compensation structure includes support columns.

2. The display panel according to claim 1, characterized in that: The adjacent apex positions of four adjacent repeating units have a third gap, and the display compensation structure is provided at least in part of the third gap.

3. The display panel according to claim 1, characterized in that: The distance between the two adjacent sides of the two third light-emitting units on the same side gradually increases in the direction away from the preset area; The distance between the two adjacent sides of the two second light-emitting units on the same side gradually increases in the direction away from the preset area.

4. The display panel according to claim 1, characterized in that: In the same repeating unit, the adjacent sides of the second light-emitting unit and the adjacent first light-emitting unit are parallel to each other, the adjacent sides of the second light-emitting unit and the adjacent third light-emitting unit are parallel to each other, and the adjacent sides of the third light-emitting unit and the adjacent first light-emitting unit are parallel to each other. The adjacent edges of the third light-emitting units adjacent along the first direction are parallel to each other, and the adjacent edges of the second light-emitting units adjacent along the second direction are parallel to each other; when the same repeating unit includes at least two first light-emitting units, the adjacent edges of the first light-emitting units are parallel to each other.

5. The display panel according to claim 1, characterized in that: In the same repeating unit: the at least two second light-emitting units disposed on one side of the first side are symmetrical with respect to the at least two second light-emitting units disposed on one side of the second side, and the at least two second light-emitting units disposed on one side of the first side are symmetrical with respect to the second symmetry line; and / or, the at least two third light-emitting units disposed on one side of the third side are symmetrical with respect to the second symmetry line, and the at least two third light-emitting units disposed on one side of the fourth side are symmetrical with respect to the first symmetry line; wherein, the first symmetry line extends along the first direction, and the second symmetry line extends along the second direction.

6. The display panel according to claim 1, characterized in that: Each repeating unit includes four first light-emitting units, four second light-emitting units, and four third light-emitting units. The first light-emitting units are rectangular, and the second and third light-emitting units are parallelograms or trapezoids.

7. The display panel according to claim 1, characterized in that: The display compensation structure also includes a compensation light-emitting unit.

8. The display panel according to claim 1, characterized in that: The display panel further includes a rigid encapsulation layer, which is disposed on the side of the repeating unit away from the substrate, and the support pillar is used to support the rigid encapsulation layer.

9. The display panel according to claim 7, characterized in that: All the compensation light-emitting units are the same color, or the compensation light-emitting units include light-emitting units with at least two different light-emitting colors.

10. The display panel according to claim 8, characterized in that: An encapsulation material layer is further disposed between the rigid encapsulation layer and the substrate. The encapsulation material layer is disposed at the edge region of the substrate and is used to fix and encapsulate the substrate and the rigid encapsulation layer. The surface of the support post away from the substrate is flush with the surface of the encapsulation material layer away from the substrate.

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

12. A mask assembly, characterized in that, For forming the display panel according to any one of claims 1-10, the mask assembly comprises: First mask, second mask, and third mask; The first mask includes a plurality of first mask openings arranged in an array, the first mask openings being used to form at least one first light-emitting unit in a repeating unit; The second mask includes a plurality of second mask openings arranged in an array, one of which is used to form an adjacent second light-emitting unit; The third mask plate includes a plurality of arrayed third mask openings, one of which is used to form an adjacent third light-emitting unit.

13. The mask assembly according to claim 12, characterized in that: One of the second mask openings is used to form adjacent second light-emitting units in two adjacent repeating units, and one of the third mask openings is used to form adjacent third light-emitting units in two adjacent repeating units; A second gap is provided between two partially adjacent second mask openings in a first direction, and a first gap is provided between two partially adjacent third mask openings in a second direction.

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