Display substrate, display device and high-precision metal mask

Abstract

The display substrate, display device and high-precision metal mask provided by the present disclosure include a base substrate; a plurality of independent first electrodes located on the base substrate; a pixel definition layer located on the side of the layer where the plurality of first electrodes are located away from the base substrate, the pixel definition layer including a plurality of pixel openings, the pixel openings having overlapping portions and non-overlapping portions with the first electrodes, the non-overlapping portions surrounding the overlapping portions, the pixel definition layer covering the non-overlapping portions and the gaps between the first electrodes; a light-emitting material layer located on the side of the pixel definition layer away from the base substrate, the light-emitting material layer including a plurality of light-emitting portions, the light-emitting portions extending from the pixel openings to the pixel definition layer; a support layer located on the pixel definition layer and in direct contact with the light-emitting portions, the orthographic projection of the support layer on the base substrate overlapping with the orthographic projection of the gaps between the plurality of first electrodes on the base substrate.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display substrate, a display device, and a high-precision metal mask. Background Art

[0002] Organic Light-Emitting Diode (OLED) displays are based on organic light-emitting diodes (OLEDs). They offer excellent properties such as self-luminescence, high contrast, high resolution, compact size, wide viewing angle, fast response, saturated color, low energy consumption, compatibility with flexible panels, a wide operating temperature range, and relatively simple structure and manufacturing processes. Known as "dream displays," OLEDs are attracting increasing attention and possess broad application prospects. Summary of the Invention

[0003] The embodiments of the present disclosure provide a display substrate, a display device, and a high-precision metal mask. The specific solutions are as follows:

[0004] In one aspect, an embodiment of the present disclosure provides a display substrate, comprising:

[0005] substrate;

[0006] A plurality of mutually independent first electrodes are located on the base substrate;

[0007] a pixel definition layer located on a side of the layer where the plurality of first electrodes are located away from the substrate, the pixel definition layer comprising a plurality of pixel openings, the pixel openings having overlapping portions and non-overlapping portions with the first electrodes, the non-overlapping portions surrounding the overlapping portions, and the pixel definition layer covering the non-overlapping portions and gaps between the first electrodes;

[0008] a light-emitting material layer, located on a side of the pixel definition layer away from the base substrate, the light-emitting material layer comprising a plurality of light-emitting portions, the light-emitting portions extending from the pixel opening to the pixel definition layer;

[0009] A supporting layer is located on the pixel definition layer and is in direct contact with the light-emitting portion. The orthographic projection of the supporting layer on the base substrate is located at the gaps between the plurality of first electrodes, and the orthographic projections on the base substrate overlap with each other.

[0010] Optionally, in the above-mentioned display substrate provided by the embodiment of the present disclosure, the supporting layer is in contact with the light-emitting portion only on the side surface.

[0011] Optionally, in the above-mentioned display substrate provided in an embodiment of the present disclosure, the plurality of light-emitting portions include a plurality of red light-emitting portions, a plurality of green light-emitting portions, and a plurality of blue light-emitting portions;

[0012] One red light emitting unit, two green light emitting units and one blue light emitting unit constitute a pixel unit, and the pixel units are cyclically arranged in both row and column directions;

[0013] In the pixel unit, the red light-emitting portion and the blue light-emitting portion are alternately arranged in a column direction, and the two green light-emitting portions are alternately arranged in a column direction, and the two green light-emitting portions are located on the same side of the red light-emitting portion and the blue light-emitting portion;

[0014] There is a first gap between the two green light-emitting portions of the same pixel unit, and the first gap is adjacent to the blue light-emitting portion;

[0015] A second gap is provided between adjacent green light-emitting portions of adjacent pixel units, and the second gap is adjacent to the red light-emitting portion.

[0016] Optionally, in the above-mentioned display substrate provided by an embodiment of the present disclosure, the supporting layer is located at the first gap.

[0017] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, the shapes of the red light-emitting portion, the green light-emitting portion and the blue light-emitting portion are all rectangular, and the long sides of the red light-emitting portion, the green light-emitting portion and the blue light-emitting portion extend in the column direction and the wide sides extend in the row direction.

[0018] Optionally, in the display substrate provided in the embodiment of the present disclosure, the shape of the green light-emitting portion is a right-angled trapezoid, and the shapes of the blue light-emitting portion and the red light-emitting portion are both rectangular;

[0019] The two bottom sides of the green light-emitting portion extend along the column direction, the waist side where the right angle is located is located at the second gap, and the other waist side is located at the first gap. The long sides of the red light-emitting portion and the blue light-emitting portion extend along the column direction, and the wide sides extend along the row direction.

[0020] Optionally, in the above-mentioned display substrate provided in an embodiment of the present disclosure, the plurality of light-emitting portions include a plurality of red light-emitting portions, a plurality of green light-emitting portions, and a plurality of blue light-emitting portions;

[0021] One red light-emitting unit, two green light-emitting units, and one blue light-emitting unit constitute a pixel unit, and the pixel units are arranged cyclically in a first direction and a second direction; the first direction is arranged to intersect with both the row direction and the column direction, and the second direction is arranged to intersect with both the first direction, the row direction, and the column direction;

[0022] In the pixel unit, the red light-emitting portion and the green light-emitting portion are alternately arranged in the first direction and the second direction, and the blue light-emitting portion and the green light-emitting portion are alternately arranged in the first direction and the second direction;

[0023] In the first direction, there is a third gap between the red light-emitting portion and the green light-emitting portion, and there is a fourth gap between the blue light-emitting portion and the green light-emitting portion;

[0024] In the second direction, there is a fifth gap between the red light emitting portion and the green light emitting portion, and there is a sixth gap between the blue light emitting portion and the green light emitting portion.

[0025] Optionally, in the above-mentioned display substrate provided by an embodiment of the present disclosure, the supporting layer is located at the third gap, and there is one third gap between adjacent supporting layers in the first direction.

[0026] Optionally, in the display substrate provided in an embodiment of the present disclosure, the red light-emitting portion, the green light-emitting portion, and the blue light-emitting portion are all rhombus-shaped, and two groups of opposite sides of the red light-emitting portion, the green light-emitting portion, and the blue light-emitting portion extend along the first direction and the second direction, respectively;

[0027] The support layer is in a rhombus shape, and two groups of opposite sides of the support layer extend along the first direction and the second direction respectively.

[0028] Optionally, in the above-mentioned display substrate provided in an embodiment of the present disclosure, the plurality of light-emitting portions include a plurality of red light-emitting portions, a plurality of green light-emitting portions, and a plurality of blue light-emitting portions;

[0029] One red light emitting portion, one green light emitting portion and one blue light emitting portion constitute a pixel unit, and the pixel units are cyclically arranged in both row and column directions;

[0030] The red light emitting portion and the green light emitting portion in the pixel unit are alternately arranged in a column direction, and the red light emitting portion and the green light emitting portion are located on the same side of the blue light emitting portion;

[0031] The supporting layer includes multiple rows, the supporting layer in the i-th row is located in the gap between adjacent pixel units, the supporting layer in the i+1-th row is located in the gap between the column where the blue light-emitting part is located and the column where the red light-emitting part is located in the pixel unit, the supporting layer in the i-th row and the supporting layer in the i+1-th row do not overlap with each other in the column direction, and i is an odd number.

[0032] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, the relative sides of the red light-emitting portion and the green light-emitting portion are straight lines and parallel to each other, and the shape of the blue light-emitting portion is a rounded rectangle.

[0033] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, the red light-emitting portion, the green light-emitting portion and the blue light-emitting portion are in the shape of rounded rectangles.

[0034] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, the red light-emitting portion, the green light-emitting portion and the blue light-emitting portion are in the shape of a quadrilateral, wherein the two groups of diagonals of the blue light-emitting portion are right angles and arc chamfers, respectively, one of the four corners of the red light-emitting portion is an arc chamfer and the other three are right angles, one of the four corners of the green light-emitting portion is an arc chamfer and the other three are right angles, and the gaps between adjacent pixel units are surrounded by arc chamfers or right angles.

[0035] Optionally, in the above-mentioned display substrate provided by the embodiment of the present disclosure, the orthographic projection shape of the light-emitting portion covering the pixel opening on the base substrate is the same as the orthographic projection shape of the light-emitting portion.

[0036] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, the side surface of the supporting layer contacts the side surface of the light-emitting portion, and the surface edge of the supporting layer facing away from the base substrate contacts the surface edge of the light-emitting portion facing the base substrate.

[0037] Optionally, in the above-mentioned display substrate provided in an embodiment of the present disclosure, the plurality of light-emitting portions include a plurality of red light-emitting portions, a plurality of green light-emitting portions, and a plurality of blue light-emitting portions;

[0038] One red light emitting unit, two green light emitting units and one blue light emitting unit constitute a pixel unit, and the pixel units are cyclically arranged in both row and column directions;

[0039] In the pixel unit, the red light-emitting portion and the blue light-emitting portion are alternately arranged in a column direction, and the two green light-emitting portions are alternately arranged in a column direction, and the two green light-emitting portions are located on the same side of the red light-emitting portion and the blue light-emitting portion;

[0040] The orthographic projection of the supporting layer on the base substrate overlaps with the orthographic projection edge of the blue light-emitting portion adjacent to the green light-emitting portion, and the orthographic projection edge of the green light-emitting portion adjacent to the blue light-emitting portion.

[0041] Optionally, in the above-mentioned display substrate provided in an embodiment of the present disclosure, the plurality of light-emitting portions include a plurality of red light-emitting portions, a plurality of green light-emitting portions, and a plurality of blue light-emitting portions;

[0042] One red light emitting portion, one green light emitting portion and one blue light emitting portion constitute a pixel unit, and the pixel units are cyclically arranged in both row and column directions;

[0043] The red light emitting portion and the green light emitting portion in the pixel unit are alternately arranged in a column direction, and the red light emitting portion and the green light emitting portion are located on the same side of the blue light emitting portion;

[0044] The orthographic projection of the supporting layer on the base substrate overlaps with the orthographic projection edge of the red light-emitting portion adjacent to the green light-emitting portion in the pixel unit, and the orthographic projection edge of the green light-emitting portion adjacent to the red light-emitting portion.

[0045] Optionally, in the display substrate provided by an embodiment of the present disclosure, in the pixel unit, the pixel opening covered by the red light-emitting portion has a first side, and the pixel opening covered by the green light-emitting portion has a second side, and both the first side and the second side are adjacent to the supporting layer;

[0046] The first side includes a first avoidance portion, and the second side includes a second avoidance portion, wherein the first avoidance portion and the second avoidance portion are both recessed in a direction away from the support layer;

[0047] The shape of the first avoidance portion is the same as the shape of the side of the support layer adjacent to the first avoidance portion, and the shape of the second avoidance portion is the same as the shape of the side of the support layer adjacent to the second avoidance portion.

[0048] Optionally, in the above-mentioned display substrate provided in an embodiment of the present disclosure, the plurality of light-emitting portions include a plurality of red light-emitting portions, a plurality of green light-emitting portions, and a plurality of blue light-emitting portions;

[0049] One red light-emitting portion, one green light-emitting portion, and one blue light-emitting portion constitute a pixel unit, the pixel units are cyclically arranged in both row and column directions, and the red light-emitting portions and the green light-emitting portions within the pixel unit are alternately arranged in the column direction, and the red light-emitting portions and the green light-emitting portions are located on the same side of the blue light-emitting portion;

[0050] The orthographic projection of the supporting layer on the base substrate overlaps with adjacent orthographic projection edges of the red light-emitting portion, the green light-emitting portion, and the blue light-emitting portion in the pixel unit.

[0051] Optionally, in the display substrate provided in an embodiment of the present disclosure, in the pixel unit, the pixel opening covered by the red light-emitting portion has a first corner area, the pixel opening covered by the green light-emitting portion has a second corner area, and the pixel opening covered by the blue light-emitting portion has a third side, and the first corner area, the second corner area, and the third side are all adjacent to the supporting layer;

[0052] The first corner area includes a third avoidance portion, the second corner area includes a fourth avoidance portion, and the third side includes a fifth avoidance portion, wherein the third avoidance portion, the fourth avoidance portion, and the fifth avoidance portion are all recessed in a direction away from the support layer;

[0053] The shape of the third avoidance portion is the same as the shape of the support layer adjacent to the third avoidance portion, the shape of the fourth avoidance portion is the same as the shape of the support layer adjacent to the fourth avoidance portion, and the shape of the fifth avoidance portion is the same as the shape of the support layer adjacent to the fifth avoidance portion.

[0054] Optionally, the display substrate provided in the embodiment of the present disclosure further includes: a second electrode, wherein the entire surface of the second electrode is disposed on a side of the light-emitting material layer away from the pixel definition layer.

[0055] On the other hand, an embodiment of the present disclosure further provides a display device comprising the above-mentioned display substrate.

[0056] On the other hand, the embodiment of the present disclosure further provides a high-precision metal mask for producing the above-mentioned luminescent material layer. The high-precision metal mask includes: multiple opening areas, and the multiple opening areas correspond to the shapes and positions of the multiple luminescent parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic structural diagram of a display substrate provided in an embodiment of the present disclosure;

[0058] Figure 2 A schematic diagram of a pixel arrangement provided in an embodiment of the present disclosure;

[0059] Figure 3 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0060] Figure 4 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0061] Figure 5 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0062] Figure 6 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0063] Figure 7 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0064] Figure 8 A schematic diagram of another structure of a display substrate provided in an embodiment of the present disclosure;

[0065] Figure 9 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0066] Figure 10 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0067] Figure 11 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure;

[0068] Figure 12 A schematic diagram of another pixel arrangement provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. It should be noted that the sizes and shapes of the figures in the drawings do not reflect the actual proportions, and the purpose is only to illustrate the contents of the present disclosure. And the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0070] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar terms used in this disclosure and the claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0071] In the related art, the mainstream manufacturing process for OLED display devices is evaporation. In this process, the luminescent material produced by the evaporation source is deposited onto the sub-pixel area of ​​the display substrate through the opening area of ​​a high-precision metal mask (FMM). However, with the demand for higher resolution (PPI), the size of the sub-pixel area is getting smaller and smaller, which makes it very easy to cause color mixing when evaporating to form the pixel array.

[0072] In order to at least solve the above technical problems existing in the related art, the embodiment of the present disclosure provides a display substrate, such as Figure 1 As shown, this may include:

[0073] Base substrate 101;

[0074] A plurality of mutually independent first electrodes 102 are located on the base substrate 101;

[0075] The pixel definition layer 103 is located on a side of the layer where the multiple first electrodes 102 are located that is away from the substrate 101. The pixel definition layer 103 includes multiple pixel openings K. The pixel openings K have overlapping portions and non-overlapping portions with the first electrodes 102. The non-overlapping portions surround the overlapping portions. The pixel definition layer 103 covers the non-overlapping portions and the gaps between the first electrodes 102.

[0076] The light-emitting material layer 104 is located on the side of the pixel definition layer 103 facing away from the substrate 101. The light-emitting material layer 104 includes a plurality of light-emitting portions (e.g., a red light-emitting portion R, a green light-emitting portion G, and a blue light-emitting portion B). The light-emitting portions (e.g., the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B) extend from the pixel opening K to the pixel definition layer 103.

[0077] The support layer 105 is located on the pixel definition layer 103 and is in direct contact with the light-emitting portion (e.g., the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B). The orthographic projection of the support layer 105 on the base substrate 101 overlaps with the orthographic projection of the gaps between the plurality of first electrodes 102 on the base substrate 101. Figure 1 It is shown that the orthographic projection of the support layer 105 on the base substrate 101 is located within the orthographic projection of the gaps between the plurality of first electrodes 102 on the base substrate 101 .

[0078] In the above-mentioned display substrate provided in the embodiment of the present disclosure, a support layer 105 in contact with the light-emitting portion (for example, the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B) is provided above the gaps between the multiple first electrodes 102, so that the support layer 105 can effectively separate adjacent light-emitting portions (for example, the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B), thereby reducing the risk of color mixing and improving the display quality.

[0079] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figures 1 to 7 As shown, the supporting layer 105 and the light-emitting parts (e.g., the red light-emitting part R, the green light-emitting part G, and the blue light-emitting part B) may be in contact only on the side, and there is no pattern of the light-emitting parts (e.g., the red light-emitting part R, the green light-emitting part G, and the blue light-emitting part B) above the supporting layer 105. That is, the supporting layer 105 is in contact with the light-emitting parts and does not overlap with each other. Therefore, the supporting layer 105 can effectively isolate the light-emitting parts (e.g., the red light-emitting part R, the green light-emitting part G, and the blue light-emitting part B) to improve poor color mixing.

[0080] In addition, the support layer 105 is located in the area outside the light-emitting portion (i.e., the non-opening area of ​​the FMM), which solves the problem of the film layer at the support layer 105 being too high due to the accumulation of light-emitting materials on the support layer 105 when the support layer 105 is partially located in the opening area of ​​the FMM, thereby preventing the high-precision metal mask from moving in the evaporation chamber and scratching the film layer at the support layer 105, avoiding the problem of light-emitting materials flying and product reliability failure caused by scratches, while improving the evaporation chamber environment and improving product quality. Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 2 and Figure 3 As shown, the plurality of light emitting parts may include a plurality of red light emitting parts R, a plurality of green light emitting parts G and a plurality of blue light emitting parts B;

[0081] A red light-emitting unit R, two green light-emitting units G, and one blue light-emitting unit B constitute a pixel unit P, and the pixel units P are cyclically arranged in both the row direction X and the column direction Y;

[0082] In the pixel unit P, the red light-emitting portion R and the blue light-emitting portion B are alternately arranged in the column direction Y, and the two green light-emitting portions G are alternately arranged in the column direction Y, and the two green light-emitting portions G are located on the same side of the red light-emitting portion R and the blue light-emitting portion B;

[0083] There is a first gap a between the two green light-emitting parts G of the same pixel unit P, and the first gap a is adjacent to the blue light-emitting part B;

[0084] A second gap b is formed between adjacent green light emitting portions G of adjacent pixel units P, and the second gap b is adjacent to the red light emitting portion R.

[0085] In some embodiments, as Figure 2 As shown, the support layer 105 can be located at the first gap a. Of course, in specific implementations, the arrangement density and position of the support layer 105 can also be flexibly set. For example, the support layer 105 can be located at the second gap b, or the support layer 105 can be located at both the first gap a and the second gap b. This is not limited here.

[0086] In some embodiments, as Figure 2 As shown, the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B are all rectangular in shape, with their long sides extending in the column direction Y and their wide sides extending in the row direction X. The support layer 105 is also rectangular in shape, with its long sides extending in the row direction X and its wide sides extending in the column direction Y. Of course, the shape of the support layer 105 can also be a step-shaped shape, such as a shape well known to those skilled in the art, and is not specifically limited here.

[0087] In some embodiments, as Figure 3 As shown, the shape of the green light-emitting portion G is a right-angled trapezoid, and the shapes of the blue light-emitting portion B and the red light-emitting portion R are both rectangular; the two bottom sides of the green light-emitting portion G extend along the column direction Y, the waist side where the right angle is located is located at the second gap b, and the other waist side is located at the first gap a, the long sides of the red light-emitting portion R and the blue light-emitting portion B extend along the column direction Y, and the wide sides extend along the row direction X; the shape of the supporting layer 105 can be rectangular, and the long side of the supporting layer 105 extends in a parallel direction to the waist side of the green light-emitting portion G at the first gap a, and the wide side extends in a perpendicular direction to the waist side of the green light-emitting portion G at the first gap a.

[0088] Compared to Figure 2 The rectangular design in Figure 3 By designing the green light-emitting portion G in a special-shaped manner, the gaps between the green light-emitting portions G can be fully utilized to set the support layer 105 while avoiding sacrificing the pixel aperture ratio of the green light-emitting portion G. Of course, in specific implementations, the red light-emitting portion R and / or the blue light-emitting portion B can also be designed in a special-shaped manner, and the shape of the support layer 105 can be flexibly set, which is not limited here.

[0089] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 4 As shown, the plurality of light emitting parts may include a plurality of red light emitting parts R, a plurality of green light emitting parts G and a plurality of blue light emitting parts B;

[0090] A plurality of red light-emitting units R and a plurality of blue light-emitting units B are arranged in an array, and a plurality of green light-emitting units G are arranged in an array;

[0091] A red light-emitting unit R, two green light-emitting units G, and one blue light-emitting unit B constitute a pixel unit P. The pixel units P are arranged cyclically in a first direction N and a second direction M. The first direction N is arranged to intersect with the row direction X and the column direction Y. The second direction M is arranged to intersect with the first direction N, the row direction X, and the column direction Y.

[0092] In the pixel unit P, the red light-emitting portion R and the green light-emitting portion G are alternately arranged in the first direction N and the second direction M, and the blue light-emitting portion B and the green light-emitting portion G are alternately arranged in the first direction N and the second direction M;

[0093] In the first direction N, there is a third gap c between the red light-emitting portion R and the green light-emitting portion G, and a fourth gap d between the blue light-emitting portion B and the green light-emitting portion G; the first direction N is arranged to intersect with the row direction X and the column direction Y;

[0094] In the second direction M, there is a fifth gap e between the red light-emitting portion R and the green light-emitting portion G, and a sixth gap f between the blue light-emitting portion B and the green light-emitting portion G; the second direction M is arranged to intersect with the first direction N, the row direction X, and the column direction Y;

[0095] The support layer 105 may be located at the third gap c, and there is a third gap c between adjacent support layers 105 in the first direction N.

[0096] Since the luminous efficiency of the red light-emitting material and the green light-emitting material is greater than the luminous efficiency of the blue light-emitting material B, the supporting layer 105 is placed in the gap between the red light-emitting part R and the green light-emitting part G through the light-emitting part R, so as to increase the pixel opening ratio of the blue light-emitting part B, so that the luminous efficiency and luminous life of the red light-emitting part R, the green light-emitting part G and the blue light-emitting part B match, which is beneficial to improving the display quality.

[0097] Of course, in specific implementation, the arrangement density and position of the support layer 105 can be flexibly set. For example, the support layer 105 can be set in at least one of the third gap c, the fourth gap d, the fifth gap e, and the sixth gap f, which is not limited here.

[0098] In some embodiments, as Figure 4 As shown, the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B can all be rhombus-shaped, and the two sets of opposite sides of the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B extend respectively in the first direction N and the second direction M. The support layer 105 can also be rhombus-shaped, and the two sets of opposite sides of the support layer 105 extend respectively in the first direction N and the second direction M. It should be noted that, in a specific implementation, the shapes of the red light-emitting portion R, the green light-emitting portion G, the blue light-emitting portion B, and the support layer 105 are not limited to the above-mentioned rhombuses, and can also be other shapes, which are not limited here.

[0099] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 2 and Figure 8As shown, in the direction perpendicular to the base substrate 101, the distance between the surface of the luminescent material layer 104 facing away from the base substrate 101 (i.e., the upper surface of the luminescent material layer 104) and the surface of the support layer 105 facing away from the base substrate 101 (i.e., the upper surface of the support layer 105) can be 0.1μm-3μm. This can prevent the film layer at the support layer 105 from being too high and being scratched by the FMM, thereby improving product reliability and the evaporation chamber environment.

[0100] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figures 5 to 7 As shown, the plurality of light emitting parts may include a plurality of red light emitting parts R, a plurality of green light emitting parts G and a plurality of blue light emitting parts B;

[0101] A red light emitting portion R, a green light emitting portion G, and a blue light emitting portion B constitute a pixel unit P, and the pixel units P are cyclically arranged in both the row direction X and the column direction Y;

[0102] The red light-emitting portion R and the green light-emitting portion G in the pixel unit P are alternately arranged in the column direction Y, and the red light-emitting portion R and the green light-emitting portion G are located on the same side of the blue light-emitting portion B;

[0103] The support layer 105 may include multiple rows, the i-th row of support layer 105 is located in the gap between adjacent pixel units P, the i+1-th row of support layer is located in the gap between the column where the blue light-emitting part B is located and the column where the red light-emitting part R is located in the pixel unit, the i-th row of support layer and the i+1-th row of support layer do not overlap with each other in the column direction, and i is an odd number.

[0104] Figures 5 to 7 The pixel arrangement makes the red light-emitting part R, the green light-emitting part G, the blue light-emitting part B and the supporting layer 105 evenly arranged, which is beneficial to the FMM network.

[0105] In some embodiments, as Figure 5 As shown, the blue light-emitting portion B is a rounded rectangle (i.e., a rectangle with arcs at the four corners), the opposite sides of the red light-emitting portion R and the green light-emitting portion G are straight and parallel to each other, the side of the red light-emitting portion R away from the green light-emitting portion G is arc-shaped, the side of the green light-emitting portion G away from the red light-emitting portion R is also arc-shaped, and the side of the green light-emitting portion G facing the red light-emitting portion R is square. In this case, the gaps between the pixel units P are surrounded by arcs, and the red light-emitting portion R, green light-emitting portion G, and blue light-emitting portion B are all regular shapes, which is conducive to FMM network expansion.

[0106] In some embodiments, as Figure 6As shown, the red, green, and blue light-emitting portions R, G, and B can all be rounded rectangles, and the support layer 105 is located where the red, green, and blue light-emitting portions R, G, and B are all arc-shaped. This arrangement of the red, green, and blue light-emitting portions R, G, and B results in a more even distribution and uniform force distribution, which is very beneficial for FMM meshing.

[0107] In some embodiments, as Figure 7 As shown, the shapes of the red light-emitting portion R, the green light-emitting portion G and the blue light-emitting portion B can all be quadrilaterals, wherein the two sets of diagonals of the blue light-emitting portion B are right angles and arc chamfers respectively, one of the four corners of the red light-emitting portion R is an arc chamfer and the other three are right angles, one of the four corners of the green light-emitting portion R is an arc chamfer and the other three are right angles, and the gaps between adjacent pixel units P are surrounded by arc chamfers or right angles. Figure 7 The pixel arrangement shown can simultaneously increase the pixel aperture ratio of the red light-emitting part R, the green light-emitting part G and the blue light-emitting part B, and the arrangement of the red light-emitting part R, the green light-emitting part G and the blue light-emitting part B is very uniform, which is conducive to FMM network expansion.

[0108] In addition, by Figure 7 It can be seen that the gap surrounded by the arc chamfers is larger than the gap surrounded by the right angles. Therefore, the support layer 105 can be set in the gap surrounded by the arc chamfers of the red light-emitting part R, the green light-emitting part G and the blue light-emitting part B in the adjacent pixel units P to facilitate the production of the support layer 105.

[0109] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figures 2 to 7 As shown, the orthographic projection shape of the pixel opening K covered by the light-emitting portion (e.g., red light-emitting portion R, green light-emitting portion G, blue light-emitting portion B) on the base substrate 101 can be the same as the orthographic projection shape of the light-emitting portion (e.g., red light-emitting portion R, green light-emitting portion G, blue light-emitting portion B) to ensure good thickness uniformity of the light-emitting portion inside the pixel opening K and on the pixel definition layer 103. Of course, the shapes of the two can also be different, which is not limited here.

[0110] Optionally, in the display substrate provided in the embodiment of the present disclosure, in order to improve poor color mixing while taking into account a larger pixel aperture ratio, as shown in FIG. Figures 8 to 12 As shown, the side of the supporting layer 105 can be in contact with the side of the light-emitting portion (for example, the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B), and the surface edge of the supporting layer 105 facing away from the base substrate 101 is in contact with the surface edge of the light-emitting portion (for example, the red light-emitting portion R, the green light-emitting portion G, and the blue light-emitting portion B) facing the base substrate 101, that is, the supporting layer 105 can be in contact with the edge of the light-emitting portion and overlap with each other.

[0111] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 9 As shown, the plurality of light emitting parts may include a plurality of red light emitting parts R, a plurality of green light emitting parts G and a plurality of blue light emitting parts B;

[0112] A red light-emitting unit R, two green light-emitting units G, and one blue light-emitting unit B constitute a pixel unit P, and the pixel units P are cyclically arranged in both the row direction X and the column direction Y;

[0113] In the pixel unit P, the red light-emitting portion R and the blue light-emitting portion B are alternately arranged in the column direction Y, and the two green light-emitting portions G are alternately arranged in the column direction Y, and the two green light-emitting portions G are located on the same side of the red light-emitting portion R and the blue light-emitting portion B;

[0114] The orthographic projection of the supporting layer 105 on the base substrate 101 overlaps with the orthographic projection edge of the blue light-emitting portion B adjacent to the green light-emitting portion G, and the orthographic projection edge of the green light-emitting portion G adjacent to the blue light-emitting portion B. In other words, the supporting layer 105 is arranged at the adjacent edges of the blue light-emitting portion B and the green light-emitting portion G.

[0115] Figure 9 The arrangement shown can make the aperture ratios of the red light-emitting portion R, the green light-emitting portion G and the blue light-emitting portion B larger.

[0116] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 10 and Figure 11 As shown, the plurality of light emitting parts may include a plurality of red light emitting parts R, a plurality of green light emitting parts G and a plurality of blue light emitting parts B;

[0117] A red light emitting portion R, a green light emitting portion G, and a blue light emitting portion B constitute a pixel unit P, and the pixel units P are cyclically arranged in both the row direction X and the column direction Y;

[0118] The red light-emitting portion R and the green light-emitting portion G in the pixel unit P are alternately arranged in the column direction Y, and the red light-emitting portion R and the green light-emitting portion G are located on the same side of the blue light-emitting portion B;

[0119] The orthographic projection of the support layer 105 on the base substrate 101 overlaps with the orthographic projection edge of the red light-emitting portion R adjacent to the green light-emitting portion G in the pixel unit P, and the orthographic projection edge of the green light-emitting portion G adjacent to the red light-emitting portion R. In other words, the support layer 105 is provided at the adjacent edges of the red light-emitting portion R and the green light-emitting portion G. This arrangement can increase the light-emitting area of ​​the blue light-emitting portion B, thereby improving the lifespan of the blue light.

[0120] In some embodiments, as Figure 10 and Figure 11As shown, in the pixel unit P, the pixel opening K covered by the red light-emitting portion R has a first side, and the pixel opening K covered by the green light-emitting portion G has a second side, and both the first side and the second side are adjacent to the support layer 105;

[0121] The first side includes a first avoidance portion g, and the second side includes a second avoidance portion h, wherein the first avoidance portion g and the second avoidance portion h are both recessed in a direction away from the second side;

[0122] The shape of the first avoidance portion g is the same as the shape of the side of the support layer 105 adjacent to the first avoidance portion g, and the shape of the second avoidance portion h is the same as the shape of the side of the support layer 105 adjacent to the second avoidance portion h.

[0123] Specifically, in Figure 10 The middle support layer 105 is a chamfered square, and the shapes of the first avoidance portion g and the second avoidance portion h are approximately arc-shaped broken lines; Figure 10 The middle supporting layer 105 is circular, and the first avoidance portion g and the second avoidance portion h are arc-shaped.

[0124] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 12 As shown, the plurality of light emitting parts may include a plurality of red light emitting parts R, a plurality of green light emitting parts G and a plurality of blue light emitting parts B;

[0125] A red light emitting portion R, a green light emitting portion G, and a blue light emitting portion B constitute a pixel unit P, and the pixel units P are cyclically arranged in both the row direction X and the column direction Y;

[0126] The red light-emitting portion R and the green light-emitting portion G in the pixel unit P are alternately arranged in the column direction Y, and the red light-emitting portion R and the green light-emitting portion G are located on the same side of the blue light-emitting portion B;

[0127] The orthographic projection of the support layer 105 on the base substrate 101 overlaps with the adjacent orthographic projection edges of the red, green, and blue light-emitting portions R, G, and B in the pixel unit P. In other words, the support layer 105 is provided at the adjacent edges of the red, green, and blue light-emitting portions R, G, and B. This arrangement can simultaneously increase the light-emitting areas of the red, green, and blue light-emitting portions R, G, and B, thereby improving the device lifespan.

[0128] In some embodiments, as Figure 12 As shown, in the pixel unit P, the pixel opening K covered by the red light-emitting portion R has a first corner area, the pixel opening K covered by the green light-emitting portion G has a second corner area, and the pixel opening K covered by the blue light-emitting portion B has a third side, and the first corner area, the second corner area and the third side are all adjacent to the support layer 105;

[0129] The first corner area includes a third avoidance portion i, the second corner area includes a fourth avoidance portion j, and the third side includes a fifth avoidance portion q, wherein the third avoidance portion i, the fourth avoidance portion j and the fifth avoidance portion q are all recessed in a direction away from the support layer;

[0130] The shape of the third avoidance portion i is the same as that of the third avoidance portion i adjacent to the support layer 105, the shape of the fourth avoidance portion j is the same as that of the fourth avoidance portion j adjacent to the support layer 105, and the shape of the fifth avoidance portion q is the same as that of the fifth avoidance portion q adjacent to the support layer 105.

[0131] Specifically, in Figure 12 The middle supporting layer 105 is circular, and the third avoidance portion i, the fourth avoidance portion j, and the fifth avoidance portion q are all arc-shaped.

[0132] Optionally, in the above-mentioned display substrate provided in the embodiment of the present disclosure, if Figure 1 and Figure 8 As shown, it may further include a second electrode 106, which may be entirely disposed on a side of the light-emitting material layer 104 facing away from the pixel definition layer 103. In some embodiments, the first electrode 102 may be an anode providing holes, and the second electrode 106 may be a cathode providing electrons.

[0133] It should be noted that in the present disclosure, the distance between the pixel openings K covered by adjacent light-emitting portions is not limited. Figure 5-7 、 Figure 10-12 In the embodiment, the distance between the pixel openings K covered by adjacent blue light-emitting portions B can be greater than, less than or equal to the distance between the pixel openings K covered by adjacent red light-emitting portions R and green light-emitting portions B.

[0134] In addition, the above only exemplifies the arrangement of the red light-emitting portion R, the green light-emitting portion G and the blue light-emitting portion B, and the setting of the support layer 105. The shapes, sizes, density and positions of the red light-emitting portion R, the green light-emitting portion G, the blue light-emitting portion B and the support layer 105 involved are not limited to the above description.

[0135] Based on the same inventive concept, the embodiment of the present disclosure also provides a display device, including the above-mentioned display substrate provided by the embodiment of the present disclosure. Since the principle of solving the problem by the display device is similar to the principle of solving the problem by the above-mentioned display substrate, the implementation of the display device can refer to the embodiment of the above-mentioned display substrate, and the repeated parts will not be repeated.

[0136] In some embodiments, the display device is applicable to organic electroluminescent display technology and quantum dot light-emitting display technology, and can be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigation system, smart watch, fitness wristband, personal digital assistant, etc. The display device includes, but is not limited to, components such as a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply. Those skilled in the art will understand that the structure of the display device described above does not constitute a limitation on the display device, and the display device may include more or fewer of the aforementioned components, or a combination of certain components, or a different arrangement of components.

[0137] Based on the same inventive concept, embodiments of the present disclosure also provide a high-precision metal mask for fabricating the aforementioned luminescent material layer. This high-precision metal mask includes multiple openings corresponding in shape and position to the multiple luminescent portions. Because the principles underlying the high-precision metal mask are similar to those underlying the display substrate, the implementation of this high-precision metal mask can be referenced to the aforementioned display substrate embodiment, and any overlaps will be omitted.

[0138] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if such changes and modifications of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such changes and modifications.

Claims

1. A display substrate, wherein: include: substrate; A plurality of mutually independent first electrodes are located on the base substrate; a pixel definition layer located on a side of the layer where the plurality of first electrodes are located away from the substrate, the pixel definition layer comprising a plurality of pixel openings, the pixel openings having overlapping portions and non-overlapping portions with the first electrodes, the non-overlapping portions surrounding the overlapping portions, and the pixel definition layer covering the non-overlapping portions and gaps between the first electrodes; a light-emitting material layer, located on a side of the pixel definition layer away from the base substrate, the light-emitting material layer comprising a plurality of light-emitting portions, the light-emitting portions extending from the pixel opening to the pixel definition layer; a supporting layer, located on the pixel definition layer and in direct contact with the light-emitting portion, wherein an orthographic projection of the supporting layer on the base substrate overlaps an orthographic projection of the gaps between the plurality of first electrodes on the base substrate; The side surface of the supporting layer contacts the side surface of the light-emitting portion, and the surface edge of the supporting layer facing away from the base substrate contacts the surface edge of the light-emitting portion facing the base substrate, and a gap is provided between adjacent light-emitting portions on the surface of the supporting layer facing away from the base substrate.

2. The display substrate according to claim 1, wherein The plurality of light emitting portions include a plurality of red light emitting portions, a plurality of green light emitting portions and a plurality of blue light emitting portions; One red light emitting unit, two green light emitting units and one blue light emitting unit constitute a pixel unit, and the pixel units are cyclically arranged in both row and column directions; In the pixel unit, the red light-emitting portion and the blue light-emitting portion are alternately arranged in a column direction, and the two green light-emitting portions are alternately arranged in a column direction, and the two green light-emitting portions are located on the same side of the red light-emitting portion and the blue light-emitting portion; The orthographic projection of the supporting layer on the base substrate overlaps with the orthographic projection edge of the blue light-emitting portion adjacent to the green light-emitting portion, and the orthographic projection edge of the green light-emitting portion adjacent to the blue light-emitting portion.

3. The display substrate according to claim 1, wherein: The plurality of light emitting portions include a plurality of red light emitting portions, a plurality of green light emitting portions and a plurality of blue light emitting portions; One red light emitting portion, one green light emitting portion and one blue light emitting portion constitute a pixel unit, and the pixel units are cyclically arranged in both row and column directions; The red light emitting portion and the green light emitting portion in the pixel unit are alternately arranged in a column direction, and the red light emitting portion and the green light emitting portion are located on the same side of the blue light emitting portion; The orthographic projection of the supporting layer on the base substrate overlaps with the orthographic projection edge of the red light-emitting portion adjacent to the green light-emitting portion in the pixel unit, and the orthographic projection edge of the green light-emitting portion adjacent to the red light-emitting portion.

4. The display substrate according to claim 3, wherein: In the pixel unit, the pixel opening covered by the red light-emitting portion has a first side, and the pixel opening covered by the green light-emitting portion has a second side, and both the first side and the second side are adjacent to the supporting layer; The first side includes a first avoidance portion, and the second side includes a second avoidance portion, wherein the first avoidance portion and the second avoidance portion are both recessed in a direction away from the support layer; The shape of the first avoidance portion is the same as the shape of the side of the support layer adjacent to the first avoidance portion, and the shape of the second avoidance portion is the same as the shape of the side of the support layer adjacent to the second avoidance portion.

5. The display substrate according to claim 1, wherein The plurality of light emitting portions include a plurality of red light emitting portions, a plurality of green light emitting portions and a plurality of blue light emitting portions; One red light-emitting portion, one green light-emitting portion, and one blue light-emitting portion constitute a pixel unit, the pixel units are cyclically arranged in both row and column directions, and the red light-emitting portions and the green light-emitting portions within the pixel unit are alternately arranged in the column direction, and the red light-emitting portions and the green light-emitting portions are located on the same side of the blue light-emitting portion; The orthographic projection of the supporting layer on the base substrate overlaps with adjacent orthographic projection edges of the red light-emitting portion, the green light-emitting portion, and the blue light-emitting portion in the pixel unit.

6. The display substrate according to claim 5, wherein: In the pixel unit, the pixel opening covered by the red light-emitting portion has a first corner area, the pixel opening covered by the green light-emitting portion has a second corner area, and the pixel opening covered by the blue light-emitting portion has a third side, and the first corner area, the second corner area, and the third side are all adjacent to the supporting layer; The first corner area includes a third avoidance portion, the second corner area includes a fourth avoidance portion, and the third side includes a fifth avoidance portion, wherein the third avoidance portion, the fourth avoidance portion, and the fifth avoidance portion are all recessed in a direction away from the support layer; The shape of the third avoidance portion is the same as the shape of the support layer adjacent to the third avoidance portion, the shape of the fourth avoidance portion is the same as the shape of the support layer adjacent to the fourth avoidance portion, and the shape of the fifth avoidance portion is the same as the shape of the support layer adjacent to the fifth avoidance portion.

7. The display substrate according to any one of claims 1 to 6, wherein: Also includes: The second electrode is entirely disposed on a side of the light-emitting material layer facing away from the pixel definition layer.

8. A display device, wherein: The display substrate comprises the display substrate according to any one of claims 1 to 7.

9. A high-precision metal mask for manufacturing the light-emitting material layer of the display substrate according to any one of claims 1 to 7, wherein: include: A plurality of opening areas are provided, and the plurality of opening areas correspond to shapes and positions of the plurality of light emitting portions.

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