Display panel and mask plate

Abstract

The application provides a display panel and a mask plate, and solves the problem of uneven brightness and darkness of the display panel in the prior art. The display panel comprises a pixel definition layer, the pixel definition layer comprises a first region and a second region, the first region comprises a first pixel opening, and the second region comprises a second pixel opening. The opening area of the first pixel opening is smaller than the opening area of the second pixel opening. The first region is used for being at least partially aligned with a body part of a magnet plate of an adsorption mask plate when evaporating an organic material into the first pixel opening, and the second region is used for being at least partially aligned with a hollow part of the magnet plate when evaporating the organic material into the second pixel opening.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and a mask. Background Technology

[0002] In the display field, when fabricating organic light-emitting layers using a vapor deposition process, a magnet plate and a mask plate are typically placed on two opposing surfaces of the array substrate. The mask plate is located on the side where the pixel openings are located. The magnet plate is located on the side away from the pixel openings and is used to attract the mask plate, ensuring a tight fit between the mask plate and the array substrate. This often results in display panels exhibiting uneven brightness. Summary of the Invention

[0003] In view of this, embodiments of this application provide a display panel and a mask to solve the problem of uneven brightness in the display panel in the prior art.

[0004] This application provides a display panel comprising: a pixel definition layer, the pixel definition layer including a first region and a second region, the first region including a first pixel opening, and the second region including a second pixel opening, wherein the opening area of ​​the first pixel opening is smaller than the opening area of ​​the second pixel opening. The first pixel opening is configured to be at least partially aligned with the body portion of a magnet plate of an adsorption mask when an organic material is deposited into the first region, and the second region is configured to be at least partially aligned with a cutout portion of the magnet plate when an organic material is deposited into the second pixel opening.

[0005] The display panel provided according to the embodiments of this application includes a first region and a second region. During the fabrication of the organic light-emitting layer, the orthographic projection of the first region at least partially overlaps with the body portion, and the orthographic projection of the second region at least partially overlaps with the cutout portion. The magnetic force of the body portion causes the pixel brightness of the first region to be higher than that of the second region. By setting the opening area of ​​the pixel opening in the first region to be smaller than the opening area of ​​the pixel opening in the second region, the pixel brightness in the first region is reduced, approaching parity with the pixel brightness in the second region, thereby improving the brightness uniformity of the display panel.

[0006] In one embodiment, both the first and second regions are strip-shaped and parallel to each other. This matches the structure of a conventional magnetic plate, i.e., a grid-like structure. Grid-like magnetic plates can cause alternating bright and dark stripes on the display panel. By matching the shapes of the first and second regions to the shape of the magnetic plate, this striping phenomenon can be avoided.

[0007] In one embodiment, the pixel definition layer further includes a third region comprising a third pixel opening. The third region is located between the first and second regions, and the opening area of ​​the third pixel opening is between the opening areas of the first and second pixel openings. In this case, the opening area of ​​the pixel opening increases stepwise in the direction from the axis of symmetry of the first region to the axis of symmetry of the second region, resulting in a stepwise increase in pixel brightness. This trend is the opposite of the effect of the magnet plate on pixel brightness, where pixel brightness decreases stepwise in the direction from the axis of symmetry of the first region to the axis of symmetry of the second region, thereby further improving the brightness uniformity of the display panel.

[0008] A second aspect of this application provides a mask plate, including: a fourth region and a fifth region, the fourth region including a first through hole, the fifth region including a second through hole, the opening area of ​​the first through hole being smaller than the opening area of ​​the second through hole; the fourth region is used to be at least partially aligned with the body portion of a magnet plate, and the fifth region is used to be at least partially aligned with the cutout portion of the magnet plate.

[0009] The mask provided according to the embodiments of this application includes a fourth region and a fifth region. The fourth region includes a first through-hole, and the fifth region includes a second through-hole. The opening area of ​​the first through-hole is smaller than the opening area of ​​the second through-hole. During the fabrication of the display panel, the orthographic projection of the fourth region at least partially overlaps with the body portion of the magnet plate, and the orthographic projection of the fifth region at least partially overlaps with the cutout portion of the magnet plate. The magnetic force of the body portion causes the pixel brightness of the fourth region to be higher than that of the fifth region. By setting the opening area of ​​the first through-hole in the fourth region to be smaller than the opening area of ​​the second through-hole in the fifth region, the pixel brightness in the fourth region is reduced, approaching the level of the pixel brightness in the fifth region, thereby improving the brightness uniformity of the display panel.

[0010] In one embodiment, both the fourth and fifth regions are strip-shaped and parallel to each other.

[0011] In one embodiment, the mask further includes a sixth region, which includes a third through-hole. The sixth region is located between the fourth and fifth regions, and the opening area of ​​the third through-hole is between the opening area of ​​the first through-hole and the opening area of ​​the second through-hole.

[0012] A third aspect of this application provides a method for fabricating a display panel, comprising: aligning a mask, a pre-substrate, and a magnet plate, wherein the magnet plate includes a body portion and a cutout portion, and the opening areas of either a through-hole on the mask or a pixel opening on the pre-substrate are differentiated, the variation of the opening area being related to the arrangement of the body portion and the cutout portion on the magnet plate; depositing an organic material into the pixel opening through the through-hole to obtain a light-emitting layer; removing the mask and fabricating an electrode layer on the light-emitting layer to obtain the display panel.

[0013] In one embodiment, where the opening areas of the through holes on the mask are differentiated, the mask includes a fourth region and a fifth region. The fourth region includes a first through hole, and the fifth region includes a second through hole. The opening area of ​​the first through hole is smaller than the opening area of ​​the second through hole. Aligning the mask, the pre-substrate, and the magnet plate includes: aligning the mask and the pre-substrate; aligning the magnet plate and the mask, with the main body and the fourth region at least partially aligned, and the cutout portion and the fifth region at least partially aligned.

[0014] In one embodiment, both the fourth and fifth regions are strip-shaped and parallel; the axis of symmetry of the fourth region is aligned with the axis of symmetry of the main body; and / or the axis of symmetry of the fifth region is aligned with the axis of symmetry of the cutout portion. The pixel brightness corresponding to the axis of symmetry of the main body is the brightest, and the pixel brightness corresponding to the axis of symmetry of the cutout portion is the darkest. By setting the axis of symmetry of the fourth region to overlap with the axis of symmetry of the main body, and the axis of symmetry of the fifth region to overlap with the axis of symmetry of the cutout portion, the brightness uniformity of the display panel can be further improved.

[0015] In one embodiment, the fourth region includes a first edge region, a central region, and a second edge region, with the first edge region and the second edge region located on either side of the central region, and the central region and the body portion aligned. Attached Figure Description

[0016] Figure 1 This is a top view of the pre-placed substrate.

[0017] Figure 2 for Figure 1 The diagram shows a cross-sectional structure of the pre-placed substrate along line A1A2.

[0018] Figure 3 This is a schematic diagram showing the positional relationship between the pre-placed substrate and the magnet plate during the fabrication of the organic light-emitting layer.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the pre-placed substrate provided in the first embodiment of this application.

[0020] Figure 5 Provided for the first embodiment of this application Figure 4 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate.

[0021] Figure 6 Provided for the second embodiment of this application Figure 4 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate.

[0022] Figure 7 This is a schematic diagram of the cross-sectional structure of the pre-placed substrate provided in the second embodiment of this application.

[0023] Figure 8Provided for the first embodiment of this application Figure 7 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate.

[0024] Figure 9 Provided for the second embodiment of this application Figure 7 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate.

[0025] Figure 10 This is a top view of a mask provided in an embodiment of this application.

[0026] Figure 11 for Figure 10 The diagram shows a cross-sectional structure of the mask plate along line C1C2.

[0027] Figure 12 In the process of preparing an organic light-emitting layer according to an embodiment of this application Figure 10 The diagram shows the positional relationship between the mask plate and the magnet plate.

[0028] Figure 13 A flowchart illustrating the manufacturing process of the display panel provided in the first embodiment of this application. Detailed Implementation

[0029] The fabrication process of the organic light-emitting layer is located in the middle stage of the entire display panel fabrication process, and the organic light-emitting layer is formed on the intermediate product structure. For ease of explanation, the intermediate product structure used to fabricate the organic light-emitting layer will be referred to as the pre-fabricated substrate below. Figure 1 This is a top view of the pre-placed substrate. Figure 2 for Figure 1 The diagram shows a cross-sectional view of the pre-installed substrate along line A1A2. (Combined with...) Figure 1 and Figure 2 As shown, the preset substrate 10 includes an array substrate 11 and a pixel definition layer 12 stacked on the array substrate 11. The array substrate 11 includes a patterned first electrode layer 110, which is, for example, an anode layer. The pixel definition layer 12 includes a pixel opening 120 that exposes the first electrode layer 110. The exposed surface of the pixel definition layer 12 is the first surface S1 of the preset substrate 10, and the exposed surface of the array substrate 11 is the second surface S2 of the preset substrate 10.

[0030] Figure 3 This diagram illustrates the positional relationship between the pre-placed substrate and the magnet plate during the fabrication of the organic light-emitting layer. Figure 3 As shown, during the fabrication of the organic light-emitting layer, the magnet plate 20, the pre-placed substrate 10, and the mask plate are stacked sequentially, with the magnet plate 20 disposed on the lower surface of the pre-placed substrate 10. Figure 2 The second surface S2 of the pre-placed substrate 10 is shown. Mask plate ( Figure 3(Not shown in the image) is disposed on the upper surface of the pre-placed substrate 10, i.e. Figure 2 The first surface S1 of the pre-placed substrate 10 is shown. A magnet plate 20 is used to attract the mask plate, so that the mask plate and the first surface S1 of the pre-placed substrate 10 are tightly bonded. Subsequently, [further details are needed]. Figure 2 As shown, an organic light-emitting layer can be obtained by evaporating organic material into the pixel opening 120.

[0031] like Figure 3 As shown, the magnet plate 20 has a hollow structure, including a body portion 21 and a hollow portion 22. The pre-placed substrate 10 includes a first region X1 and a second region X2. The first region X1 is directly opposite the body portion 21, and the second region X2 is directly opposite the hollow portion 22. Due to the magnetic force of the body portion 21, the first region X1 adheres tightly to the mask, resulting in small vapor deposition shadows, a thicker vapor deposition film, and a brighter brightness. However, the hollow portion 22 lacks magnetic force, causing the second region X2 to adhere loosely to the mask, resulting in large vapor deposition shadows, a thinner vapor deposition film, and a dimmer brightness. This leads to uneven brightness in the display panel.

[0032] In view of this, embodiments of this application provide a display panel including a first region and a second region. The first region includes a first pixel opening, and the second region includes a second pixel opening. The opening area of ​​the first pixel opening is smaller than the opening area of ​​the second pixel opening. During the fabrication of the organic light-emitting layer of this display panel, the first region is used to at least partially align with the body portion of the magnet plate of the adsorption mask when depositing organic material into the first pixel opening. The second region is used to at least partially align with the cutout portion of the magnet plate when depositing organic material into the second pixel opening. By setting the opening area of ​​the first pixel opening in the first region to be smaller than the opening area of ​​the second pixel opening in the second region, the effect of the magnet plate on pixel brightness can be complementary, reducing the pixel brightness in the first region to approximately equal that in the second region, thereby improving the brightness uniformity of the display panel.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Figure 4 This is a schematic diagram of the cross-sectional structure of the pre-placed substrate provided in the first embodiment of this application. Figure 4 The cross section shown corresponds to Figure 3 The cross-section lines B1B2 in the diagram. For example... Figure 4As shown, in this embodiment, the first region X1 of the pre-placed substrate 40 includes a first pixel opening 121, and the second region X2 includes a second pixel opening 122. The first region X1 is used to at least partially align with the body portion of the magnet plate when depositing organic material into the first pixel opening 121, and the second region X2 is used to at least partially align with the hollow portion of the magnet plate when depositing organic material into the second pixel opening 122. The opening area d of the first pixel opening 121 is smaller than the opening area D of the second pixel opening 122. When the first pixel opening 121 and the second pixel opening 122 have the same shape, the size of the opening area can be measured by the width of the first pixel opening 121 and the second pixel opening 122 at the same position. For example, when both the first pixel opening 121 and the second pixel opening 122 are squares, the side length of the first pixel opening 121 is smaller than the side length of the second pixel opening 122. By setting the opening area d of the first pixel opening 121 to be smaller than the opening area D of the second pixel opening 122, the pixel brightness of the first region X1 can be lower than that of the second region X2, thus complementing the effect of the magnet plate 20 on the pixel brightness, making the pixel brightness of the first region X1 and the pixel brightness of the second region X2 tend to be consistent, thereby improving the brightness uniformity of the display panel.

[0035] In one embodiment, the opening area d of the first pixel opening 121 and the opening area D of the second pixel opening 122 conform to the following relationship: 0 < Dd ≤ 6 micrometers.

[0036] Figure 5 Provided for the first embodiment of this application Figure 4 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate. The magnet plate 20 can have any openwork structure, such as a grid-like openwork structure, a mesh-like openwork structure, etc. Figure 5 As shown, the orthographic projection of the first region X1 of the pre-set substrate 50 overlaps with the body portion 21 of the magnet plate 20, and the orthographic projection of the second region X2 of the pre-set substrate 50 overlaps with the cutout portion 22 of the magnet plate 20.

[0037] Figure 6 Provided for the second embodiment of this application Figure 4 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate. The magnet plate 20 can have any openwork structure, such as a grid-like openwork structure, a mesh-like openwork structure, etc. Figure 6As shown, the first region X1 of the pre-laid substrate 60 includes a first edge region X11, a central region X12, and a second edge region X13. The first edge region X11 and the second edge region X13 are located on opposite sides of the central region X12, and the orthographic projection of the central region X12 overlaps with the body portion 21. The second region X2 is located on the side of the central region X12 closer to the second edge X13, and the second region X2 and the second edge region X13 are adjacent. The orthographic projection of the second region X2 falls within the area of ​​the cutout portion 22.

[0038] Due to the magnetic force of the main body 21, the central region X12 and the mask are tightly bonded. The bonding force between the central region X12 and the mask affects the bonding forces between the first edge region X11 and the mask, and the second edge region X13 and the mask, resulting in weaker bonding forces between the first edge region X11 and the mask, and the second edge region X13 and the mask compared to the bonding force between the central region X12 and the mask. Therefore, providing the cutout portion 22 covering the periphery of the main body 21 by the first region X1 can further improve brightness uniformity. At the same time, increasing the size of the first region X1 allows for more first pixel openings 121 to be accommodated, thereby improving the resolution of the subsequently obtained display panel.

[0039] In one embodiment, such as Figure 6 As shown, the first region X1, the second region X2, the main body 21, and the cutout portion 22 are all axially symmetrical shapes, such as bars. The axis of symmetry of the first region X1 coincides with the axis of symmetry of the main body 21, and the axis of symmetry of the second region X2 coincides with the axis of symmetry of the cutout portion 22. The pixels corresponding to the axis of symmetry of the main body 21 are the brightest, and the pixels corresponding to the axis of symmetry of the cutout portion 22 are the darkest. By setting the axis of symmetry of the first region X1 to overlap with the axis of symmetry of the main body 21, and the axis of symmetry of the second region X2 to overlap with the axis of symmetry of the cutout portion 22, the brightness uniformity of the display panel can be further improved.

[0040] In one embodiment, such as Figure 6 As shown, the first region X1 and the second region X2 constitute a repeating unit. The display panel includes multiple repeating units, which are arranged sequentially adjacent to each other. In this way, the pixel openings in the display panel form a periodic arrangement, simplifying the design.

[0041] Figure 7 This is a schematic diagram of the cross-sectional structure of the pre-placed substrate provided in the second embodiment of this application. Figure 7 The cross section shown corresponds to Figure 3 Section lines B1 and B2 are shown in the diagram. (Combined with...) Figure 3 and Figure 7 As shown, the pre-placed substrate 70 and Figure 4The difference in the shown preset substrate 40 is that the preset substrate 70 also includes a third region X3 located between the first region X1 and the second region X2, and the third region X3 is adjacent to the first region X1 and the second region X2. The third region X3 includes a third pixel opening 123, and the opening area C of the third pixel opening 123 is between the opening area d of the first pixel opening 121 and the opening area D of the second pixel opening 122. In this case, the opening areas of the pixel openings in the first region X1, the third region X3 and the second region X2 show a step-like increasing trend.

[0042] Figure 8 Provided for the first embodiment of this application Figure 7 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate. The magnet plate 20 can have any openwork structure, such as a grid-like openwork structure, a mesh-like openwork structure, etc. Figure 8 As shown, the orthographic projection of the third region X3 of the pre-placed substrate 70 falls within the area of ​​the cutout portion 22. In this case, the first region X1, the second region X2, and the two third regions X3 constitute a repeating unit. The display panel includes multiple repeating units, which are arranged sequentially adjacent to each other. In this way, the pixel openings in the display panel are arranged periodically, simplifying the design.

[0043] Figure 9 Provided for the second embodiment of this application Figure 7 The diagram shows the positional relationship between the pre-placed substrate and the magnet plate. The magnet plate 20 can have any openwork structure, such as a grid-like openwork structure, a mesh-like openwork structure, etc. Figure 9 As shown, the orthographic projection of the third region X3 of the pre-set substrate 70 includes a first sub-region X31 and a second sub-region X32. The first sub-region X31 falls within the area of ​​the cutout portion 22, and the second sub-region X32 falls within the area of ​​the main body portion 21.

[0044] This application also provides a display panel, including the intermediate product structure provided in any of the above embodiments.

[0045] Based on the same inventive concept as the display panel provided in the above embodiments, this application also provides a mask plate. Figure 10 This is a top view of a mask provided in an embodiment of this application. Figure 11 for Figure 10 The diagram shows a cross-sectional structure of the mask plate along line C1C2. Figure 10 The diagram simply illustrates a row of through holes. It should be understood that the shape of the through holes can be reasonably set according to actual needs. (Combined with...) Figure 10 and Figure 11As shown, the mask plate 100 includes a fourth region X4 and a fifth region X5. The fourth region X4 includes a first through-hole 110, and the fifth region X5 includes a second through-hole 120. The fourth region X4 is at least partially aligned with the body portion of the magnet plate, and the fifth region X5 is at least partially aligned with the cutout portion of the magnet plate. The opening area d0 of the first through-hole 110 is smaller than the opening area D0 of the second through-hole 120. When the first through-hole 110 and the second through-hole 120 have the same shape, the size of the opening area can be measured by the width of the first through-hole 110 and the second through-hole 120 at the same position. For example, when both the first through-hole 110 and the second through-hole 120 are square, the side length of the first through-hole 110 is smaller than the side length of the second through-hole 120. In one embodiment, the opening area d0 of the first through-hole 110 and the opening area D0 of the second through-hole 120 conform to the following relationship: 0 < D0 - d0 ≤ 6 micrometers.

[0046] Figure 12 In the process of preparing an organic light-emitting layer according to an embodiment of this application Figure 10 The diagram shows the positional relationship between the mask and the magnet plate. Figure 12 As shown, the orthographic projection of the fourth region X4 of the mask plate 100 at least partially overlaps with the body portion 21 of the magnet plate 20, and the orthographic projection of the fifth region X5 of the mask plate 100 at least partially overlaps with the cutout portion 22 of the magnet plate 20. For example, the orthographic projection of the fourth region X4 coincides with the body portion 21, and the orthographic projection of the fifth region X5 coincides with the cutout portion 22. For another example, the fourth region X4 includes a first edge region X41, a central region X42, and a second edge region X43. The first edge region X41 and the second edge region X43 are located on opposite sides of the central region X42, and the orthographic projection of the central region X42 overlaps with the body portion 21. The fifth region X5 is located on the side of the central region X42 closer to the second edge, and the fifth region X5 is adjacent to the second edge region X43. The orthographic projection of the fifth region X5 falls within the area of ​​the cutout portion 22.

[0047] In one embodiment, see Figure 10 As shown, the mask plate 100 also includes a sixth region X6 located between the fourth region X4 and the fifth region X5, and the sixth region X6 is adjacent to the fourth region X4 and the fifth region X5. See also Figure 11 As shown, the sixth region X6 includes a third through-hole 130, the opening area of ​​which is between the opening area of ​​the first through-hole 110 and the opening area of ​​the second through-hole 120. In this case, during the fabrication of the organic light-emitting layer using the mask 10, as... Figure 12 As shown, the orthographic projection of the sixth region X6 falls within the area of ​​the hollowed-out portion 22, or a portion of the sixth region X6 falls within the area of ​​the hollowed-out portion 22, while the remaining portion falls within the area of ​​the main body portion 21.

[0048] According to the embodiments of this application, the mask 100 includes a fourth region X4 and a fifth region X5. The fourth region X4 includes a first through-hole 110, and the fifth region X5 includes a second through-hole 120. The opening area of ​​the first through-hole 110 is smaller than the opening area of ​​the second through-hole 120. In this case, when organic materials are vapor-deposited to prepare the organic light-emitting layer, the vapor-deposited film layer in the pixel opening corresponding to the fourth region X4 is thinner and has lower brightness, while the vapor-deposited film layer in the pixel opening corresponding to the fifth region X5 is thicker and has higher brightness. That is, the difference in the opening area of ​​the through-holes in different regions of the mask 100 makes the pixel brightness of the fourth region X4 lower than that of the fifth region X5. This complements the effect of the magnet plate 20 on the pixel brightness, i.e., the pixel brightness of the fourth region X4 is higher than that of the fifth region X5. This makes the pixel brightness of the fourth region X4 and the pixel brightness of the fifth region X5 tend to be consistent, thereby improving the brightness uniformity of the display panel.

[0049] This application and this embodiment do not limit the shape and positional relationship of the fourth region X4 and the fifth region X5, or the shape and positional relationship of the body portion 21 and the hollow portion 22 in the magnet plate 20. In product design, the magnet plate 20 can be designed based on the shape and positional relationship of the fourth region X4 and the fifth region X5, and the display panel 40 can also be designed based on the shape and positional relationship of the body portion 21 and the hollow portion 22 in the magnet plate 20.

[0050] This application also provides a method for manufacturing a display panel. Figure 13 This is a flowchart illustrating the fabrication process of the display panel provided in the first embodiment of this application. Figure 13 As shown, the manufacturing process 130 of the display panel includes:

[0051] Step S131: Align the mask, the pre-set substrate, and the magnet plate. The magnet plate includes a body and a cutout portion. The opening area of ​​either the through hole on the mask or the pixel opening on the pre-set substrate is set differently. The variation of the opening area is related to the arrangement of the body and the cutout portion on the magnet plate.

[0052] Step S132: Organic material is vapor-deposited into the pixel opening through the through-hole to obtain the light-emitting layer.

[0053] Step S133: Remove the mask and prepare an electrode layer on the light-emitting layer to obtain the display panel.

[0054] Specifically, in one embodiment, the opening areas of the pixel openings on the preset substrate are differentiated. In this case, before step S131, the method further includes: fabricating a pixel definition layer on an array substrate to obtain the preset substrate. The array substrate includes a patterned first electrode layer, such as an anode layer. The pixel definition layer includes a first region and a second region. The first region includes a first pixel opening, and the second region includes a second pixel opening. The first pixel opening and the second pixel opening include the first electrode layer. The opening area of ​​the first pixel opening is smaller than the opening area of ​​the second pixel opening. For example, a mask can be used to etch the pixel definition layer, and the vias on the mask can be differentiated to form pixel openings with different opening areas in different regions of the pixel definition layer.

[0055] Step S131 is specifically performed as follows: Aligning the mask plate with the pre-set substrate. The mask plate is positioned on the opening side of the first pixel opening and the second pixel opening of the pre-set substrate, and the through holes on the mask plate are aligned with the first pixel opening and the second pixel opening, respectively. This alignment can mean that the central axis coincides. Aligning the magnet plate with the pre-set substrate. The first region of the pre-set substrate and the main body are at least partially aligned, i.e., the orthographic projection of the first region and the main body are at least partially overlapped; the second region of the pre-set substrate and the cutout portion are at least partially aligned, i.e., the second region and the cutout portion are at least partially overlapped. The specific positional relationship between the magnet plate and the array substrate can be referred to... Figure 4 , Figure 5 , Figure 8 and Figure 9 The embodiments shown are not described in detail here.

[0056] The display panel can be obtained by performing steps S132 and S133.

[0057] According to the display panel manufacturing method provided in this embodiment, the first pixel opening area of ​​the first region corresponding to the magnet plate body is smaller than the second pixel opening area of ​​the second region corresponding to the hollow part, so that the pixel brightness in the first region X1 is reduced and approaches the pixel brightness in the second region X2, thereby improving the brightness uniformity of the display panel.

[0058] In another embodiment, the opening areas of the vias on the mask are differentiated. Specifically, the mask includes a fourth region and a fifth region, the fourth region includes a first via, and the fifth region includes a second via, the opening area of ​​the first via being smaller than the opening area of ​​the second via. In this case, step S131 is specifically performed as follows: aligning the first via and the second via with the pixel openings one by one, so that the mask and the array substrate are aligned. At least partially aligning the body portion and the fourth region, and at least partially aligning the cutout portion and the fifth region, so that the magnet plate and the mask are aligned. The specific positional relationship between the magnet plate and the mask can be referred to... Figure 10 The embodiments shown are not described in detail here.

[0059] The display panel can be obtained by performing steps S132 and S133.

[0060] According to the display panel manufacturing method provided in this embodiment, the opening area of ​​the first through hole in the fourth region corresponding to the magnet plate body is smaller than the opening area of ​​the second through hole in the fifth region corresponding to the hollow part, which reduces the pixel brightness in the fourth region X4 and approaches the pixel brightness in the fifth region X5, thereby improving the brightness uniformity of the display panel.

[0061] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display panel, characterized in that, include: A pixel definition layer, the pixel definition layer includes a first region and a second region, the first region includes a first pixel opening, the second region includes a second pixel opening, and the opening area of ​​the first pixel opening is smaller than the opening area of ​​the second pixel opening; The first region is used to be at least partially aligned with the body portion of the magnet plate of the adsorption mask when depositing organic material into the opening of the first pixel, and the second region is used to be at least partially aligned with the cutout portion of the magnet plate when depositing organic material into the opening of the second pixel.

2. The display panel according to claim 1, characterized in that, Both the first region and the second region are strip-shaped and are parallel to each other.

3. The display panel according to claim 1 or 2, characterized in that, The pixel definition layer further includes a third region, which includes a third pixel opening. The third region is located between the first region and the second region, and the opening area of ​​the third pixel opening is between the opening areas of the first pixel opening and the second pixel opening.

4. A photomask, characterized in that, include: The fourth region includes a first through hole, and the fifth region includes a second through hole, wherein the opening area of ​​the first through hole is smaller than the opening area of ​​the second through hole; The fourth region is used to be at least partially aligned with the body of the magnet plate, and the fifth region is used to be at least partially aligned with the cutout portion of the magnet plate.

5. The mask plate according to claim 4, characterized in that, Both the fourth and fifth regions are strip-shaped and are parallel to each other.

6. The mask plate according to claim 4, characterized in that, It also includes a sixth region, which includes a third through hole. The sixth region is located between the fourth region and the fifth region, and the opening area of ​​the third through hole is between the opening area of ​​the first through hole and the opening area of ​​the second through hole.

7. A method for manufacturing a display panel, characterized in that, include: Align the mask, the pre-set substrate, and the magnet plate. The magnet plate includes a body part and a cutout part. The opening area of ​​either the through hole on the mask plate or the pixel opening on the pre-set substrate is set differently. The variation law of the opening area is related to the arrangement of the body part and the cutout part on the magnet plate. Organic material is deposited into the pixel opening through the through-hole to obtain a light-emitting layer; Remove the mask and fabricate an electrode layer on the light-emitting layer to obtain the display panel.

8. The method for manufacturing a display panel according to claim 7, characterized in that, When the opening areas of the through holes on the mask are set differently, the mask includes a fourth region and a fifth region, the fourth region includes a first through hole, the fifth region includes a second through hole, and the opening area of ​​the first through hole is smaller than the opening area of ​​the second through hole. The alignment of the mask plate, the pre-placed substrate, and the magnet plate includes: Align the mask plate and the pre-placed substrate; The magnet plate and the mask plate are aligned, the main body and the fourth region are at least partially aligned, and the cutout and the fifth region are at least partially aligned.

9. The method for manufacturing a display panel according to claim 8, characterized in that, Both the fourth and fifth regions are strip-shaped and parallel to each other; the axis of symmetry of the fourth region is aligned with the axis of symmetry of the main body. And / or the axis of symmetry of the fifth region is aligned with the axis of symmetry of the hollowed-out portion.

10. The method for manufacturing a display panel according to claim 8, characterized in that, The fourth region includes a first edge region, a central region, and a second edge region. The first edge region and the second edge region are located on both sides of the central region, and the central region is aligned with the body portion.

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