Display panel and display device

Abstract

A display panel and a display device. The display panel is provided with a plurality of sub-pixels, and comprises: a base substrate; a pixel defining layer, located on one side of the base substrate and provided with a plurality of sub-pixel openings; and a light shielding layer, located on the side of the pixel defining layer away from the base substrate and provided with a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings have one-to-one correspondence to the plurality of sub-pixel openings, the light-transmitting openings and the sub-pixel openings form a plurality of opening groups, and each sub-pixel comprises a corresponding opening group. In each opening group, the orthographic projection of the sub-pixel opening on the base substrate at least partially overlaps with the orthographic projection of the light-transmitting opening on the base substrate, one of the sub-pixel opening and the light-transmitting opening is a petal-shaped opening having a petal-shaped planar shape, the petal shape comprises a combined shape formed by at least two ellipses that intersect and partially overlap with each other, the plurality of sub-pixels include a plurality of first-color sub-pixels, and among the plurality of opening groups of the plurality of first-color sub-pixels, the first identification directions of the petal-shaped openings of adjacent opening groups are different.

Description

Display panel and display device Technical Field

[0001] Embodiments of this disclosure relate to a display panel and a display device. Background Technology

[0002] With the continuous development of display technology, organic light-emitting diode (OLED) display devices have gradually become the mainstream display devices due to their advantages such as self-illumination, high color gamut, thinness, high contrast, fast response, low power consumption, and flexible display.

[0003] Traditional organic light-emitting diode (OLED) displays suffer from reflection and glare issues under ambient light. Therefore, Color Filter on Encapsulation (COE) technology was developed. COE forms a color filter structure on the encapsulation layer of the OLED display, effectively absorbing and scattering ambient light, significantly reducing screen surface reflection and thus minimizing glare. Simultaneously, COE technology also improves light transmittance, resulting in brighter, more detailed images and more accurate color reproduction. Summary of the Invention

[0004] A display panel is provided according to at least one embodiment of the present disclosure, having a plurality of sub-pixels, and comprising: a substrate; a pixel defining layer located on one side of the substrate and having a plurality of sub-pixel openings to define light-emitting areas of the plurality of sub-pixels; and a light-shielding layer located on the side of the pixel defining layer away from the substrate and having a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings correspond one-to-one with the plurality of sub-pixel openings and constitute a plurality of opening groups, each sub-pixel including one of the opening groups, wherein in each of the opening groups, the orthographic projection of the sub-pixel opening on the substrate coincides with the light-transmitting opening. The orthographic projections on the substrate at least partially overlap, and one of the sub-pixel openings and the light-transmitting openings is a petal opening with a planar petal shape. The petal shape includes a combined shape formed by at least two intersecting and partially overlapping ellipses, wherein the major axes of the at least two ellipses intersect. The petal opening has a first identification direction defined by the major axis of a reference ellipse among the at least two ellipses constituting the petal shape. The plurality of sub-pixels include a plurality of first color sub-pixels, and in the plurality of opening groups of the plurality of first color sub-pixels, the first identification direction of the petal openings in adjacent opening groups is different.

[0005] For example, in a display panel provided in at least one embodiment of this disclosure, the petal opening includes a central portion and a plurality of protrusions, the central portion being the part of the at least two ellipses that overlap with each other, and the plurality of protrusions being the parts of each of the at least two ellipses that do not overlap with other ellipses; the plurality of protrusions protrude from the central portion and have notches between adjacent protrusions.

[0006] For example, in a display panel provided in at least one embodiment of this disclosure, the eccentricities of the at least two ellipses constituting the petal shape are the same or different from each other, and the petal opening is symmetrical with respect to the major axis and the minor axis of the reference ellipse; and / or the petal opening is symmetrical with respect to the line connecting the intersection points of the at least two ellipses, the line connecting the intersection points of adjacent ellipses in the at least two ellipses.

[0007] For example, in a display panel provided in at least one embodiment of this disclosure, in each of the opening groups, one of the sub-pixel opening and the light-transmitting opening is a circular opening; the multiple opening groups of the plurality of first color sub-pixels include a first opening group and a second opening group and a third opening group adjacent to the first opening group; there is a first distance between the orthographic projection of the petal opening of the first opening group on the substrate and the orthographic projection of the petal opening of the second opening group on the substrate, and there is a second distance between the orthographic projection of the petal opening of the first opening group and the orthographic projection of the petal opening of the third opening group on the substrate, and the first distance and the second distance are different.

[0008] For example, in a display panel provided in at least one embodiment of this disclosure, in each of the opening groups, the other of the sub-pixel opening and the light-transmitting opening is an elliptical opening with an elliptical planar shape. The elliptical opening has a second identification direction defined by the extension direction of the major axis of the ellipse shape, and each of the opening groups has a reference angle between the first identification direction and the second identification direction. In the plurality of opening groups of the plurality of first color sub-pixels, the second identification directions of the elliptical openings of adjacent opening groups are also different from each other, and the reference angles of the adjacent opening groups are the same or different from each other.

[0009] For example, in a display panel provided in at least one embodiment of this disclosure, the first identification direction is the same as or parallel to the second identification direction; or the first identification direction and the second identification direction intersect each other.

[0010] For example, in a display panel provided in at least one embodiment of this disclosure, in each of the opening groups, the center of the orthographic projection of the sub-pixel opening on the substrate coincides with or does not coincide with the center of the orthographic projection of the light-transmitting opening on the substrate.

[0011] For example, in a display panel provided in at least one embodiment of this disclosure, the orthographic projection of the sub-pixel opening on the substrate is located within the orthographic projection of the light-transmitting opening on the substrate.

[0012] For example, in a display panel provided in at least one embodiment of this disclosure, the boundary of the orthographic projection of the sub-pixel opening is spaced apart from the boundary of the orthographic projection of the light-transmitting opening and does not overlap; or, the orthographic projection of the sub-pixel opening and the orthographic projection of the light-transmitting opening have points that coincide with each other.

[0013] For example, in a display panel provided in at least one embodiment of this disclosure, a portion of the orthogonal projection of the subpixel opening onto the substrate extends beyond the boundary of the orthogonal projection of the light-transmitting opening onto the substrate.

[0014] For example, in a display panel provided in at least one embodiment of this disclosure, one or more pixel repeating units are included, wherein each pixel repeating unit includes multiple sub-pixels, the multiple sub-pixels are arranged in multiple rows and columns along a first direction and a second direction, and have multiple rotation units, each rotation unit includes multiple sub-pixels aligned upwards in a third direction, the third direction intersecting the first direction and the second direction, and being or parallel to the extension direction of the pixel diagonal connecting the center of the top left sub-pixel and the center of the bottom right sub-pixel in the pixel repeating unit; wherein in each rotation unit, the petal openings of the multiple sub-pixels arranged upwards in the third direction are rotated sequentially along a rotation direction with a rotation step size, having different first identification directions from each other, the rotation step size being the angle value between the first identification directions of the petal openings of every two adjacent sub-pixels, the rotation direction being a clockwise direction or a counterclockwise direction.

[0015] For example, in a display panel provided in at least one embodiment of this disclosure, the rotation step size of each pair of adjacent rotating units in the plurality of rotating units is different.

[0016] For example, in a display panel provided in at least one embodiment of this disclosure, the rotation directions of each pair of adjacent rotating units are different.

[0017] For example, in a display panel provided in at least one embodiment of this disclosure, the plurality of rotating units include a first rotating unit; the first rotating unit includes z sub-pixels arranged along the diagonal of the pixel, the z sub-pixels rotating sequentially along a first rotating direction, with a rotation step of 180° / z.

[0018] For example, in a display panel provided in at least one embodiment of this disclosure, the plurality of rotating units further includes one or more rotating units arranged sequentially on one side of the first rotating unit in a fourth direction perpendicular to the third direction. In the x-th rotating unit among the one or more rotating units, a plurality of sub-pixels rotate sequentially along a second rotating direction, and the rotation step size is 180° / (z×2). x ), where x is an integer greater than or equal to 1.

[0019] For example, in a display panel provided in at least one embodiment of this disclosure, one or more pixel repeating units are included. Each pixel repeating unit includes a plurality of sub-pixels arranged in an array along a first direction and a second direction, and has a plurality of annular rotating units arranged sequentially from the outside to the inside. Each annular rotating unit includes a plurality of sub-pixels located on the same annular connecting line. In each annular rotating unit, along the extending direction of the annular connecting line, the petal openings of the plurality of sub-pixels are rotated sequentially in a rotation direction with a rotation step size, so as to have different first identification directions. The rotation step size is the angle value between the first identification directions of the petal openings of every two adjacent sub-pixels, and the rotation direction is a clockwise direction or a counterclockwise direction.

[0020] For example, in a display panel provided in at least one embodiment of this disclosure, the rotation step size of the plurality of annular rotating units in the pixel repeating unit decreases sequentially from the outside to the inside.

[0021] For example, in a display panel provided in at least one embodiment of this disclosure, the outermost first annular rotating unit among the plurality of annular rotating units has z sub-pixels, and the petal openings of the z sub-pixels rotate sequentially along a first rotating direction with a rotation step of 180° / z.

[0022] For example, in a display panel provided in at least one embodiment of this disclosure, in the y-th annular rotation unit counting inward from the first annular rotation unit among the plurality of annular rotation units, the rotation step size of the plurality of sub-pixels is 180° / (z×2). (y-1) ), y≥2.

[0023] For example, in a display panel provided in at least one embodiment of this disclosure, one or more pixel repeating units are included, wherein multiple sub-pixels of each pixel repeating unit are arranged into multiple sub-pixel rows and multiple sub-pixel columns, and each sub-pixel has a rotation angle defined by the angle between the first identification direction of its corresponding petal opening and the reference direction; each sub-pixel row includes multiple sub-pixels arranged along a first direction, and the rotation angles of the multiple sub-pixels increase and / or decrease sequentially; each sub-pixel column includes multiple sub-pixels arranged along a second direction, and the rotation angles of the multiple sub-pixels increase and / or decrease sequentially.

[0024] For example, in a display panel provided in at least one embodiment of this disclosure, the rotation angle of each pair of adjacent sub-pixels in each pixel row or each pixel column is different.

[0025] For example, in a display panel provided in at least one embodiment of this disclosure, the plurality of sub-pixels include n rows and m columns of sub-pixels, and the sub-pixel in the first row and first column has an initial rotation angle α, and the minimum angle change between adjacent sub-pixels is c; wherein for the sub-pixel in the i-th row and j-th column, when i+j≤n+1, the rotation angle of the sub-pixel is α+c(i+j-2); when i+j>n+1, the rotation angle of the sub-pixel is α+c(i+j-2-n).

[0026] For example, in a display panel provided in at least one embodiment of this disclosure, i≤n, j≤m; or i<n, j≤m, and for a sub-pixel in the nth row and jth column, the rotation angle of the sub-pixel is α+c(nj).

[0027] For example, in a display panel provided in at least one embodiment of this disclosure, the plurality of sub-pixels includes a plurality of first pixel rows and a plurality of second pixel rows, each first pixel row includes a plurality of first sub-pixels arranged along a first direction, and each second pixel row includes a plurality of second sub-pixels and a plurality of third sub-pixels arranged alternately along the first direction; the plurality of first pixel rows and the plurality of second pixel rows are arranged alternately along a second direction intersecting the first direction; at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel is the first color sub-pixel.

[0028] For example, in a display panel provided in at least one embodiment of this disclosure, the plurality of sub-pixels further includes a plurality of second-color sub-pixels and a plurality of third-color sub-pixels, and the display panel has at least one of the following: in the plurality of opening groups of the plurality of second-color sub-pixels, the first identification direction of the petal openings of adjacent opening groups is different; in the plurality of opening groups of the plurality of third-color sub-pixels, the first identification direction of the petal openings of adjacent opening groups of adjacent opening groups of different colors is different.

[0029] A display panel is provided according to at least one embodiment of the present disclosure, having a plurality of sub-pixels, and comprising: a substrate; a pixel defining layer located on one side of the substrate and having a plurality of sub-pixel openings to define light-emitting areas of the plurality of sub-pixels; and a light-shielding layer located on the side of the pixel defining layer away from the substrate and having a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings correspond one-to-one with the plurality of sub-pixel openings and constitute a plurality of opening groups, each sub-pixel including one of the opening groups, wherein in each of the opening groups, the orthographic projection of the sub-pixel opening on the substrate and the orthographic projection of the light-transmitting opening on the substrate at least partially overlap, one of the sub-pixel openings and the light-transmitting openings being a petal opening with a planar petal shape, the petal shape comprising a combined shape formed by at least two intersecting and partially overlapping ellipses, wherein the major axes of the at least two ellipses intersect, the petal opening having a first identifying direction defined by the major axis of a reference ellipse among the at least two ellipses constituting the petal shape, wherein in at least some of the sub-pixels of the plurality of sub-pixels, the first identifying directions of the petal openings of adjacent opening groups are different.

[0030] A display panel is provided according to at least one embodiment of the present disclosure, having a plurality of sub-pixels, and comprising: a substrate; a pixel defining layer located on one side of the substrate and having a plurality of sub-pixel openings to define light-emitting areas of the plurality of sub-pixels; and a light-shielding layer located on the side of the pixel defining layer away from the substrate and having a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings correspond one-to-one with the plurality of sub-pixel openings and constitute a plurality of opening groups, each sub-pixel including one of the opening groups, wherein in each of the opening groups, the orthographic projection of the sub-pixel opening on the substrate and the light-transmitting opening on the substrate are intersected. The orthographic projections on the board at least partially overlap, and at least one of the sub-pixel openings and the light-transmitting openings is a petal opening with a planar petal shape. The petal shape includes a combination shape formed by the intersection and partial overlap of multiple basic shapes. The petal opening includes a central portion and multiple protrusions. The central portion is the part of the multiple basic shapes that overlap with each other, and the multiple protrusions include the parts of each of the basic shapes that do not overlap with other basic shapes. The multiple protrusions protrude from the central portion and have notches between adjacent protrusions. The multiple basic shapes include multiple ellipses, or include circles and one or more ellipses.

[0031] A display device is provided according to at least one embodiment of the present disclosure, comprising the display panel described in any of the preceding claims. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0033] Figures 1A and 1B show schematic plan views of a plurality of sub-pixels in a display panel according to some embodiments of the present disclosure.

[0034] Figure 2 shows a schematic cross-sectional view of a display panel according to some embodiments of the present disclosure.

[0035] Figures 3A to 3G show schematic plan views of petal openings of subpixels in a display panel according to some embodiments of the present disclosure.

[0036] Figures 4A to 4G show schematic plan views of the opening groups of sub-pixels in a display panel according to some embodiments of the present disclosure.

[0037] Figures 5A to 5F show schematic plan views of the opening groups of sub-pixels in a display panel according to other embodiments of the present disclosure.

[0038] Figures 6A to 6D show schematic plan views of the opening groups of sub-pixels in a display panel according to some other embodiments of the present disclosure.

[0039] Figures 7A to 7D show schematic plan views of the opening groups of sub-pixels in a display panel according to some embodiments of the present disclosure.

[0040] Figure 8 shows a schematic diagram of the pixel arrangement of a plurality of sub-pixels in a display panel according to some embodiments of the present disclosure.

[0041] Figure 9 shows a schematic diagram of the pixel arrangement of a plurality of sub-pixels in a display panel according to other embodiments of the present disclosure.

[0042] Figures 10A and 10B show schematic diagrams of the pixel arrangement of a plurality of sub-pixels in a display panel according to some embodiments of the present disclosure.

[0043] Figure 11 shows a simulated diffraction pattern of a display panel according to some embodiments of the present disclosure.

[0044] Figure 12 shows a schematic diagram of a display device according to some embodiments of the present disclosure. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0046] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0047] In an organic light-emitting diode (OLED) display device employing COE (Chip-on-Earth) technology, each sub-pixel includes a sub-pixel opening in a pixel-defining layer to define the light-emitting area. A light-emitting device (LED) layer is located within the sub-pixel opening and configured to emit light of a specific color. A color filter structure is disposed above the LED layer. This color filter structure typically includes a light-shielding layer with multiple light-transmitting openings corresponding to the sub-pixel openings. Color filters of different colors are disposed within these light-transmitting openings. Light emitted from the LED layer can pass through the light-transmitting openings of the light-shielding layer and, after passing through the color filters, is emitted from the light-emitting side of the display panel.

[0048] OLED display devices employing COE technology suffer from dark-state diffraction and color separation issues. For example, when the screen is off, external light enters the light-emitting device layer through the light-transmitting opening, and after reflection, it can be emitted again through the sub-pixel opening and the light-transmitting opening, resulting in diffraction. In the off state, the entire organic light-emitting display device exhibits color separation due to light diffraction and interference, meaning that under external light, the organic display device forms multiple different colored halos, affecting the user experience.

[0049] This disclosure provides a display panel that can improve dark-state diffraction and color separation phenomena. The display panel has a plurality of sub-pixels and includes: a substrate; a pixel defining layer located on one side of the substrate and having a plurality of sub-pixel openings to define the light-emitting areas of the plurality of sub-pixels; and a light-shielding layer located on the side of the pixel defining layer away from the substrate and having a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings correspond one-to-one with the plurality of sub-pixel openings and constitute a plurality of opening groups, each sub-pixel including one of the opening groups, wherein in each of the opening groups, the orthographic projection of the sub-pixel opening on the substrate and the orthographic projection of the light-transmitting opening on the substrate at least partially overlap, at least one of the sub-pixel opening and the light-transmitting opening is a petal opening with a planar petal shape, the petal shape including a combined shape formed by at least two intersecting and partially overlapping ellipses, wherein the major axis extension directions of the at least two ellipses intersect, the petal opening having a first identification direction defined by the major axis extension direction of a reference ellipse among the at least two ellipses constituting the petal shape, the plurality of sub-pixels including a plurality of first color sub-pixels, and in the plurality of opening groups of the plurality of first color sub-pixels, the first identification direction of the petal openings of adjacent opening groups is different.

[0050] In some embodiments, among the plurality of sub-pixels, at least some of the adjacent opening groups of the sub-pixels have different first identification directions for their petal openings. For example, the first identification directions for the petal openings of any adjacent sub-pixels among the plurality of sub-pixels are different, and these adjacent sub-pixels may be sub-pixels of the same color or sub-pixels of different colors.

[0051] In this embodiment of the disclosure, one of the sub-pixel opening groups adopts a petal opening, and the petal openings of adjacent opening groups have different first identification directions, that is, different orientations, so as to break the regular arrangement of sub-pixels, avoid stable interference of diffracted light between different opening groups, thereby improving the dark state diffraction and color separation phenomenon of the display panel and improving the user experience.

[0052] Figures 1A and 1B show schematic plan views of a display panel according to some embodiments of the present disclosure; Figure 2 shows a schematic cross-sectional view of a display panel according to some embodiments of the present disclosure taken along line I-I' of Figure 1A or Figure 1B. It should be noted that, for the purpose of more clearly illustrating the improvements of the embodiments of the present disclosure, Figures 1A and 1B only show the sub-pixel openings of the pixel defining layer and the light-transmitting openings of the light-shielding layer of the display panel, and other film layers are omitted. Unless otherwise defined or stated, these omitted film layers can be referred to in conventional designs.

[0053] As shown in Figures 1A, 1B, and 2, the display substrate 500 has a plurality of sub-pixels 200 and includes a substrate 100, a pixel defining layer 102, and a light-shielding layer 202. The pixel defining layer 102 is located on one side of the substrate 100 and has a plurality of sub-pixel openings 103 to define the light-emitting areas of the plurality of sub-pixels. The light-shielding layer 202 is located on the side of the pixel defining layer 102 away from the substrate 100 and has a plurality of light-transmitting openings 203. The plurality of light-transmitting openings 203 correspond one-to-one with the plurality of sub-pixel openings 103 and constitute a plurality of opening groups 300. The plurality of opening groups 300 correspond one-to-one with the plurality of sub-pixels 200, that is, each sub-pixel 200 includes one opening group 300.

[0054] As shown in Figure 2, the display substrate 500 may further include: a pixel driving circuit layer 101, a light-emitting device layer, an encapsulation layer 108, a color filter layer 204, and a cover layer 205. The pixel driving circuit layer 101 is located between the substrate 100 and the pixel defining layer 102, and includes a plurality of sub-pixel driving circuits. The light-emitting device layer includes an anode layer 105, an organic light-emitting layer 106, and a cathode layer 107. The portions of the light-emitting device layer located in the plurality of sub-pixel openings 102 constitute a plurality of light-emitting devices. The anode layer 105 includes anodes of a plurality of sub-pixels 200, respectively located in the plurality of sub-pixel openings 103; each anode may also include an edge portion (not shown) covered by the pixel defining layer 102. The organic light-emitting layer 106 includes light-emitting portions of a plurality of sub-pixels, at least a portion of the light-emitting portion of each sub-pixel is located in the sub-pixel opening, and the light-emitting portions of adjacent sub-pixels are isolated from each other. The cathode layer 107 includes cathodes of a plurality of sub-pixels, for example, a common cathode.

[0055] The encapsulation layer 108 is located between the cathode layer 107 and the light-shielding layer 202. In some embodiments, the encapsulation layer 108 may include organic materials, inorganic materials, or a combination thereof; for example, the encapsulation layer 108 may include a first inorganic layer, an organic layer, and a second inorganic layer. The encapsulation layer 108 can be used to isolate water and oxygen, preventing moisture and other substances from entering the light-emitting device layer of the display panel, thereby helping to protect multiple sub-pixels and ensuring the device performance and reliability of the display panel. The color filter layer 204 includes multiple color filters, which are respectively located in multiple light-transmitting openings 203 of the light-shielding layer 202. The cover layer 205 is located on the side of the color filter layer 204 away from the substrate 100 and can be used to protect the light-shielding layer, the color filter layer, and the entire display panel.

[0056] The light-shielding layer 202 may include a black matrix (BM) layer, or it may be a superposition of multiple color films to achieve a light-shielding effect; when multiple color films are superimposed as a light-shielding layer, the light-transmitting opening of the light-shielding layer 202 refers to the opening formed by the multiple color films together.

[0057] For example, each sub-pixel includes a sub-pixel driving circuit located in the sub-pixel driving circuit layer 101, and a light-emitting device located in the light-emitting device layer. Each light-emitting device includes an anode located in the anode layer 105, a light-emitting portion located in the organic light-emitting layer 106, and a cathode located in the cathode layer 107. The light-emitting device is configured to emit light under the drive of the sub-pixel driving circuit.

[0058] During display, light emitted from the organic light-emitting layer 106 in the sub-pixel opening 103 can be emitted through the light-transmitting opening 203. In the screen-off state, ambient light is incident on the display panel and can be reflected by the anode of the sub-pixel. After reflection, it can be emitted through the sub-pixel opening 103 and the light-transmitting opening 203, and diffraction may occur. If the diffracted light from adjacent sub-pixels undergoes stable interference, color separation may easily occur.

[0059] Referring to Figures 1A, 1B and 2, in each group of openings 300, the orthographic projection of the sub-pixel opening 103 on the substrate 100 and the orthographic projection of the light-transmitting opening 203 on the substrate 100 at least partially overlap; one of the sub-pixel opening 103 and the light-transmitting opening 203 is a petal opening with a planar shape in the shape of a petal, and the petal opening has a first identification direction, which is used to indicate the orientation of the petal opening.

[0060] Multiple subpixels 200 may be configured to emit light of one or more colors. For example, the multiple subpixels 200 may include first color subpixels, and in the multiple opening groups 300 of the multiple first color subpixels, the first identifying directions of the petal openings of adjacent opening groups are different. That is, the petal openings of adjacent opening groups face different directions. In some embodiments, the first identifying directions of the petal openings of every two adjacent opening groups in the multiple opening groups are all different.

[0061] In some implementations, the multiple opening groups of the plurality of first color subpixels include at least three different first identification directions.

[0062] In embodiments of this application, one of the sub-pixel aperture groups uses a petal-shaped opening. The petal opening has a large opening area, which helps to increase the opening area of ​​the sub-pixel and thus helps to increase the pixel aperture ratio. Moreover, setting the petal openings of adjacent aperture groups to have different orientations can break the regular arrangement of sub-pixels, thereby improving dark-state diffraction and color separation phenomena while increasing the pixel aperture ratio.

[0063] Figures 3A to 3G show schematic plan views of petal openings according to some embodiments of the present disclosure.

[0064] In some embodiments, the petal shape of the petal opening includes a combined shape formed by the intersection and partial overlap of at least two ellipses, wherein the major axes of the at least two ellipses intersect, and wherein a first identifying direction of the petal opening is defined by the major axis of a reference ellipse among the at least two ellipses constituting the petal shape. The outline of the petal shape is the outline of the combined shape formed by the intersection of at least two ellipses. In some embodiments, the centers of the plurality of ellipses constituting the petal shape may coincide or may not coincide; or, the centers of some of the ellipses constituting the petal shape may coincide, while the centers of others may not coincide. In some embodiments, the petal opening includes a central portion and a plurality of protrusions, the central portion being the portion where the at least two ellipses overlap, and the plurality of protrusions being portions of each of the at least two ellipses that do not overlap with other ellipses; the plurality of protrusions protrude from the central portion and have notches between adjacent protrusions.

[0065] In some embodiments, the petal shape of the petal opening may also include a combined shape consisting of intersecting and partially overlapping circles and one or more ellipses. The ellipses and / or circles constituting the petal shape may also be referred to as the basic shape of the petal shape or the petal opening. For example, the petal shape includes a combined shape consisting of intersecting and partially overlapping multiple basic shapes, which may be of the same or different types. The central portion of the petal opening is the overlapping portion of the multiple basic shapes, and multiple protrusions are portions of each basic shape that do not overlap with other basic shapes, wherein the multiple protrusions protrude from the central portion and have notches between adjacent protrusions. For example, the number of protrusions in the petal shape is greater than the number of its basic shapes.

[0066] In this article, the petal opening can also be called the flower-shaped opening, that is, the outline of the petal opening is similar to the shape of a flower, and the multiple protrusions of the petal opening are similar to the multiple petals of a flower.

[0067] For example, as shown in Figure 3A, the petal shape of the petal opening FO1 is a composite shape formed by the intersection and partial overlap of a first ellipse 10 and a second ellipse 20. The center o1 of the first ellipse 10 and the center o2 of the second ellipse 20 coincide, and the major axis a1 of the first ellipse 10 intersects the major axis a2 of the second ellipse 20; that is, the extension direction of the major axis of the first ellipse 10 and the extension direction of the major axis of the second ellipse 20 intersect each other. The center where the multiple ellipses in the petal opening coincide is also the center of the petal opening, and can be called the petal center.

[0068] Either the first ellipse 10 or the second ellipse 20 can be used as a reference ellipse, and the direction of the major axis of the reference ellipse is defined as the first identifying direction of the petal opening. For example, the direction of the major axis of the first ellipse 10 can be defined as the first identifying direction of the petal opening FO1. It should be understood that the first identifying direction is for identifying the orientation of the petal opening, and other reference points can also be selected as the identifier of the orientation of the petal opening, as long as the same reference object is used as the orientation identifier when comparing the orientation of the petal openings of multiple sub-pixels. For example, the direction of the minor axis of the reference ellipse or the direction of the line connecting the intersection points of the two ellipses can also be used as the identifier of the orientation of the petal opening; this disclosure does not impose any limitations on the comparison.

[0069] It should be understood that the major axis and minor axis of an ellipse are perpendicular to each other. Therefore, since the major axis a1 of the first ellipse 10 intersects the major axis a2 of the second ellipse 20, the minor axis b1 of the first ellipse 10 also intersects the minor axis b2 of the second ellipse b2.

[0070] In some embodiments, as shown in FIG3A, the major axis a1 of the first ellipse 10 is substantially perpendicular to the major axis a2 of the second ellipse 20, and the minor axis b1 of the first ellipse 10 is substantially perpendicular to the minor axis b2 of the second ellipse 20; therefore, the major axis a1 of the first ellipse may coincide with the minor axis b2 of the second ellipse 20, and the minor axis b1 of the first ellipse may coincide with the major axis a1 of the second ellipse 20. However, this disclosure is not limited thereto, and the intersection of the first ellipse 10 and the second ellipse 20 may include the case where their major axes intersect at any angle. It should be understood that the intersection of two axes or two directions means that the angle between them is non-zero and non-180°.

[0071] In some embodiments, the first ellipse and the second ellipse partially overlap and partially do not overlap. For example, each of the plurality of ellipses constituting the petal shape has a portion that overlaps with other ellipses and a portion that extends beyond the boundaries of other ellipses and does not overlap with other ellipses.

[0072] In some embodiments, the petal opening has multiple intersection points, each intersection point being the point where the outer peripheries of adjacent ellipses forming the petal shape intersect each other. In some embodiments, the number of intersection points of the petal opening is greater than the number of ellipses forming the petal opening shape. For example, the number of intersection points is twice the number of ellipses. For example, a petal opening composed of 2 ellipses has 4 intersection points, a petal opening composed of 3 ellipses has 6 intersection points, a petal opening composed of 4 ellipses has 8 intersection points, and so on.

[0073] For example, as shown in Figure 3A, the petal opening FO1 has four intersection points i1, i1', i2, and i2'. Intersection points with similar labels are opposite each other, for example, located on opposite sides of the center of the petal. For example, intersection points i1 and i1' are opposite each other and can be collectively referred to as the first intersection point; intersection points i2 and i2' are opposite each other and can be collectively referred to as the second intersection point.

[0074] In some embodiments, two opposing intersection points in the petal opening are symmetrical about each other with respect to the center of the petal opening, that is, the two intersection points are equidistant from the center of the petal opening. For example, intersection points i1 and i1' are symmetrical about each other with respect to the center of the petal, and intersection points i2 and i2' are symmetrical about each other with respect to the center of the petal.

[0075] In some embodiments, each protrusion of the petal opening has an arcuate surface extending from a protruding vertex toward two adjacent intersection points, the protruding vertex being the major axis vertex of a corresponding ellipse. For example, the number of protrusions in the petal opening may be proportional to the number of ellipses included in the petal opening, for example, it may be twice the number of ellipses. For example, the number of ellipses in the petal opening is ≥2, while the number of protrusions in the petal opening shape is ≥4. The contours of the multiple protrusions together constitute the contour of the petal opening. In this document, "ellipse included in the petal opening" or "ellipse of the petal opening" refers to the ellipse that constitutes the petal shape of the petal opening.

[0076] On the arc surface of each protrusion, the distance from the protrusion apex to the intersection point gradually decreases from the center of the petal. That is, on the arc surface of each protrusion, the distance from the protrusion apex to the center of the petal is the greatest, and the distance from the intersection point to the center of the petal is less than the distance from the protrusion apex to the center of the petal. For example, two adjacent protrusions are parts of different ellipses, and the two adjacent protrusions are connected at a corresponding intersection point. The petal opening has a notch between the two adjacent protrusions, and the notch has a concave arc surface jointly defined by the two adjacent protrusions. For example, the intersection point of adjacent ellipses is located at the bottom of the notch. It should be understood that the intersection point is shown as a large black dot in the figure for clearer illustration, but this does not mean that the notch has a point of uneven transition at the intersection point. In some embodiments, the intersection of adjacent ellipses can be smoothed so that the notch has a smooth concave arc surface at the intersection point.

[0077] For example, as shown in Figure 3A, the petal opening FO1 has a central portion 30 and multiple protrusions 31. The central portion 30 is the part where the first ellipse 10 and the second ellipse 20 overlap, and the multiple protrusions 31 are the parts where the first ellipse 10 and the second ellipse 20 do not overlap but protrude from the central portion 30. The outline of the petal opening FO1 is formed by the outlines of the multiple protrusions 31.

[0078] Each pair of adjacent protrusions 31 is connected to each other at their corresponding intersection points, and there is a notch 31r between each pair of adjacent protrusions 31. The notch 31r has a concave arc surface defined by the two protrusions 31. In this example, the petal opening FO1 is a combination shape composed of two ellipses and includes four protrusions 31 and four notches 31r. Each protrusion 31 may be, for example, crescent-shaped.

[0079] In some embodiments, the areas of the plurality of protrusions 31 may be the same and may be symmetrical with respect to the major or minor axis of the respective ellipse. For example, as shown in FIG3A, the two protrusions 31 located on the upper and lower sides of the figure are symmetrical with respect to the minor axis b1 of the first ellipse 10 or the major axis a2 of the second ellipse 20, and may each be symmetrical with respect to the major axis a1 of the first ellipse 10 or the minor axis b2 of the second ellipse 20; the two protrusions 31 located on the left and right sides of the figure are symmetrical with respect to the major axis a1 of the first ellipse 10 or the minor axis b2 of the second ellipse 20, and may each be symmetrical with respect to the minor axis b1 of the first ellipse 10 or the major axis a2 of the second ellipse 20. However, this disclosure is not limited thereto.

[0080] In some embodiments, the multiple ellipses constituting the petal opening shape can each have any suitable eccentricity e. It should be understood that eccentricity e is a parameter used to characterize the flatness of an ellipse, and is the ratio of the length of the semi-major axis to the semi-focal length of the ellipse. When e is 0, the ellipse becomes a circle, and when e is 1, the ellipse becomes a line segment; that is, the closer the eccentricity e of an ellipse is to 0, the closer the ellipse is to a circle; the closer the eccentricity e of an ellipse is to 1, the flatter the ellipse is. The ellipse discussed in this article is an ellipse in the conventional mathematical sense, i.e., 0 < e < 1. When e is 0 or 1, it is no longer an ellipse.

[0081] In this embodiment, the ellipse constituting the petal opening shape can be selected with any suitable eccentricity. For example, the eccentricity e of the ellipse constituting the petal opening shape can be in the range of 0 < e < 0.9. With a fixed major axis value, the smaller the eccentricity of the ellipse, the larger the ellipse area, and thus the larger the area of ​​the petal opening formed by the ellipse. In some embodiments, setting the eccentricity of the petal opening shape within the above range ensures that the petal opening has a sufficient opening area, thereby helping to ensure the pixel aperture ratio and enabling the sub-pixels to have appropriate light extraction efficiency.

[0082] Figure 3B shows a schematic plan view of another petal opening FO2, and Figures 3A and 3B schematically show different petal openings formed by ellipses with different eccentricities.

[0083] As shown in Figures 3A and 3B, the structural features of petal opening FO2 are similar to those of petal opening FO1, except that the eccentricity of the two ellipses 10 and 20 constituting petal opening FO2 is greater than that of the two ellipses 10 and 20 constituting petal opening FO1. With the same major axis of the ellipses, the area of ​​petal opening FO1 is larger than that of petal opening FO2. With the ellipse orientation remaining constant within the petal opening, compared to petal opening FO1, the notch 31r in petal opening FO2, which is composed of ellipses with a smaller eccentricity, is more concave, meaning the angle between the tangents of the arc surfaces of two adjacent protrusions is smaller.

[0084] In some embodiments, in each petal opening, the eccentricities of the at least two ellipses constituting the petal shape are the same or different from each other. In some embodiments, the petal opening is symmetrical with respect to the major axis and the minor axis of the reference ellipse; and / or the petal opening is symmetrical with respect to the line connecting the intersection points of the at least two ellipses, the line connecting the points where adjacent ellipses intersect. In some embodiments, some of the ellipses constituting the petal shape have the same eccentricity, while others have different eccentricities.

[0085] For example, as shown in Figures 3A and 3B, in each of the petal openings FO1 and FO2, the eccentricity of the first ellipse 10 and the second ellipse 20 is the same, and the petal openings are symmetrical with respect to either the major or minor axis of the first ellipse 10 or the major or minor axis of the second ellipse 20. Either the first ellipse 10 or the second ellipse 20 can be used as a reference ellipse. Moreover, the petal openings are symmetrical with respect to the line connecting the first intersection points i1 and i1', and symmetrical with respect to the line connecting the second intersection points i2 and i2'.

[0086] Figure 3C shows a schematic plan view of a petal opening formed by ellipses with different eccentricities.

[0087] For example, referring to FIG3C, in some embodiments, the eccentricities of the first ellipse 10 and the second ellipse 20 constituting the petal opening FO3 are different from each other. For example, the eccentricity of the second ellipse 20 is less than that of the first ellipse 10. Similar to that shown in FIGS. 3A and 3B, the major axes of the two ellipses of the petal opening FO3 are perpendicular to each other, that is, the major axis of one of the two ellipses coincides with the minor axis of the other of the two ellipses. In this example, the petal opening FO3 is symmetrical with respect to either the major or minor axis of the first ellipse 10 or the major or minor axis of the second ellipse 20. Either the first ellipse 10 or the second ellipse 20 can serve as a reference ellipse. The areas of two protrusions 31 located on opposite sides of the major or minor axis of the same ellipse in the petal opening FO3 can be the same, and two protrusions 31 with the same area belong to the same ellipse. However, the areas of two adjacent protrusions 31 (i.e., two protrusions belonging to different ellipses) are different from each other.

[0088] Other characteristics of petal opening FO3 are similar to those of petal openings FO1 and FO2, and can be found in the description above, so they will not be repeated here.

[0089] Figure 3D shows a schematic plan view of the petal opening FO4 according to another embodiment of the present disclosure.

[0090] Referring to Figure 3D, the petal shape of the petal opening FO4 is a composite shape formed by the intersection of a first ellipse 10 and a second ellipse 20. The center o1 of the first ellipse 10 and the center o2 of the second ellipse 20 coincide with each other, and the eccentricity of the first ellipse 10 is the same as that of the second ellipse 20. The difference from the previous example is that the major axis a1 of the first ellipse 10 and the major axis a2 of the second ellipse 20 intersect but are not perpendicular; that is, the major axis of one ellipse does not coincide with the minor axis of the other ellipse. In other words, the angle between the major axis a1 of the first ellipse 10 and the major axis a2 of the second ellipse 20 is not a right angle; for example, it could be an acute or obtuse angle.

[0091] In this example, the first intersection points i1 and i1' of the petal opening FO4 are symmetrical with respect to the center o1 / o2 of the petal opening, and the second intersection points i2 and i2' are also symmetrical with respect to the center o1 / o2 of the petal opening. The petal opening FO4 is symmetrical with respect to the line connecting the first intersection points i1 and i1', and also with respect to the line connecting the second intersection points i2 and i2'.

[0092] In some embodiments, the example of FIG3D can also be applied to cases where the eccentricities of the first ellipse 10 and the second ellipse 20 are different from each other. That is, the eccentricities of the first ellipse 10 and the second ellipse 20 constituting the petal opening are different from each other, and the major axis a1 of the first ellipse 10 and the major axis a2 of the second ellipse 20 intersect but are not perpendicular.

[0093] Figures 3E and 3F show schematic cross-sectional views of petal openings according to other embodiments of the present disclosure, wherein the petal shape of the petal opening is a combined shape formed by the intersection of two or more ellipses.

[0094] For example, as shown in Figure 3E, the petal shape of the petal opening FO5 is a combination shape formed by the intersection and partial overlap of the first ellipse 10, the second ellipse 20, and the third ellipse 30. The center o1 of the first ellipse 10, the center o2 of the second ellipse 20, and the center o3 of the third ellipse 30 coincide with each other and are the center of the petal opening. The major axes of the three ellipses intersect each other, for example, at any suitable angle.

[0095] The petal opening FO5 has six intersection points: first intersection points i1 and i1', second intersection points i2 and i2', and third intersection points i3 and i3', and six protrusions 31. In some embodiments, the petal opening FO5 may be symmetrical with respect to the major or minor axis of one or more of the first ellipse 10, the second ellipse 20, and the third ellipse 30, for example, it may be symmetrical with respect to the major or minor axis of each ellipse. For example, the petal opening FO5 may be symmetrical with respect to one or more of the line connecting the first intersection points i1 and i1', the second intersection points i2 and i2', and the third intersection points i3 and i3', for example, it may be symmetrical with respect to each intersection point line.

[0096] For example, as shown in Figure 3F, the petal shape of the petal opening FO6 is a combination shape formed by the intersection and partial overlap of the first ellipse 10, the second ellipse 20, the third ellipse 30, and the fourth ellipse 40. The centers of these ellipses coincide with each other and are the centers of the petal opening. The major axes of the four ellipses intersect each other, for example, at any suitable angle.

[0097] The petal opening FO6 has eight intersection points: first intersection points i1 and i1', second intersection points i2 and i2', third intersection points i3 and i3', and fourth intersection points i4 and i4', and has eight protrusions 31. In some embodiments, the petal opening FO6 may be symmetrical with respect to the major or minor axis of one or more of the first ellipse 10, the second ellipse 20, the third ellipse 30, and the fourth ellipse 40, for example, it may be symmetrical with respect to the major or minor axis of each ellipse. For example, the petal opening FO6 may be symmetrical with respect to one or more of the lines connecting the first intersection points i1 and i1', the second intersection points i2 and i2', the third intersection points i3 and i3', and the fourth intersection points i4 and i4', for example, it may be a symmetrical figure with respect to all of these intersection point lines.

[0098] Referring to Figures 3A to 3F, in some embodiments, the major axis lengths of the plurality of ellipses constituting the petal openings may be the same or different from each other, and the minor axis lengths of the plurality of ellipses may be the same or different from each other. For example, in petal openings FO1 and FO2, the first ellipse 10 and the second ellipse 20 of each petal opening may have the same major axis length and the same minor axis length; the plurality of ellipses included in petal openings FO5 and FO6 each have the same major axis length and the same minor axis length.

[0099] For example, in petal opening FO3, multiple ellipses have different eccentricities and may have the same major axis length but different minor axis lengths. In other examples of petal openings, multiple ellipses have different eccentricities and may have the same minor axis length but different major axis lengths. In still other examples of petal openings, multiple ellipses have the same eccentricity but different major axis lengths and different minor axis lengths.

[0100] Figure 3G shows a schematic plan view of a petal opening according to other embodiments of the present disclosure.

[0101] Referring to Figure 3G, in some embodiments, the basic shape of the petal opening FO7 includes an ellipse and a circle; for example, the petal shape of the petal opening FO7 is a combination shape formed by the intersection and partial overlap of a first ellipse 10 and a second circle 20'; the petal opening FO7 includes a central portion 30 and a plurality of protrusions 31; the central portion 30 is the portion where the first ellipse 10 and the second circle 20' overlap each other, and the protrusions 31 are the portions of the first ellipse 10 and the second circle 20' that do not overlap with another shape. Similar to the aforementioned embodiments, the number of protrusions 31 is greater than the number of basic shapes of the petal shape, for example, twice the number of basic shapes. In this example, the number of basic shapes is 2, and the number of protrusions 31 is 4.

[0102] In some embodiments, the center o1 of the first ellipse 10 and the center o2' of the second circle 20' may coincide with each other and may be referred to as the petal center of the petal opening; and the major axis extension direction and the minor axis extension direction of the first ellipse 10 each coincide with the diameter direction of the second circle 20'. In this example, the intersection points i1 and i1' of the first ellipse 10 and the second circle 20' are symmetrical with respect to the petal center; the intersection points i2 and i2' of the first ellipse 10 and the second circle 20' are symmetrical with respect to the petal center. For example, the petal opening FO7 may be symmetrical with respect to the major axis of the first ellipse 10 and with respect to the minor axis of the first ellipse 10. In other embodiments, the centers of the first ellipse and the second circle may not coincide.

[0103] It should be understood that the above-described petal opening is merely illustrative and is not intended to limit the scope of this disclosure. The petal shape of the petal opening in this disclosure can be any combination of at least two intersecting and partially overlapping ellipses whose centers coincide and whose major axes intersect, or any combination of intersecting and partially overlapping ellipses and circles. At least one of the opening groups of sub-pixels in embodiments of this disclosure can use any type of petal opening.

[0104] In some embodiments, in each of the opening groups, one of the sub-pixel opening and the light-transmitting opening is a petal opening, and the other of the sub-pixel opening and the light-transmitting opening is a circular opening; the multiple opening groups of the plurality of first color sub-pixels include a first opening group and a second opening group and a third opening group adjacent to the first opening group; there is a first distance between the orthographic projection of the petal opening of the first opening group on the substrate and the orthographic projection of the petal opening of the second opening group on the substrate, and there is a second distance between the orthographic projection of the petal opening of the first opening group and the orthographic projection of the petal opening of the third opening group on the substrate, and the first distance is different from the second distance; and there is a third distance between the orthographic projection of the circular opening of the first opening group on the substrate and the orthographic projection of the circular opening of the second opening group on the substrate, and there is a fourth distance between the orthographic projection of the circular opening of the first opening group and the orthographic projection of the circular opening of the third opening group on the substrate, and the third distance is the same as or different from the fourth distance.

[0105] Referring back to Figure 1A, for example, sub-pixel opening 103 is a petal opening, and light-transmitting opening 203 is a circular opening. Multiple opening groups include a first opening group 1 and a second opening group 2 and a third opening group 3 adjacent to the first opening group 1. For example, the first opening group 1, the second opening group 2, and the third opening group 3 can be arranged in a row along a first direction D1, with the second opening group 2 and the third opening group 3 arranged on opposite sides of the first opening group 1. The first opening group 1, the second opening group 2, and the third opening group 3 can be opening groups of any adjacent sub-pixels, for example, they can be opening groups of adjacent sub-pixels 200a among multiple sub-pixels 200a, adjacent sub-pixels 200b among multiple sub-pixels 200b, or adjacent sub-pixels 200c among multiple sub-pixels 200c; or the multiple sub-pixels corresponding to these opening groups can be any combination of sub-pixels 200a, 200b, and 200c.

[0106] In some embodiments, the sub-pixels corresponding to the first opening group 1, the second opening group 2, and the third opening group 3 may include sub-pixels of the same color or sub-pixels of different colors; for example, the sub-pixels corresponding to these opening groups may all have the same color, or the sub-pixels corresponding to these opening groups may all have different colors; or some sub-pixels corresponding to these opening groups may have the same color, while other sub-pixels may have different colors.

[0107] The orthographic projection of the petal opening of the first opening group 1 onto the substrate 100 and the orthographic projection of the petal opening of the second opening group 2 onto the substrate 100 have a first distance d1; the orthographic projection of the petal opening of the first opening group 1 onto the substrate 100 and the orthographic projection of the petal opening of the third opening group 3 onto the substrate 100 have a second distance d2, and the first distance d1 and the second distance d2 are different.

[0108] In some embodiments, the first identification direction of the petal openings of adjacent opening groups in a plurality of opening groups is different, that is, they have different orientations, so that the spacing between the petal openings of different adjacent opening groups is different. This makes the multiple petal openings arranged at non-equidistant intervals while having different orientations, further disrupting the regular arrangement of sub-pixels, which can help improve dark state diffraction and color separation phenomena.

[0109] In some embodiments, the circular openings in the multiple opening groups can be arranged at equal intervals, which can help simplify pixel design; or, the circular openings in different adjacent opening groups in the multiple opening groups can also have different intervals, that is, the multiple circular openings are also arranged at non-equal intervals, which can further help improve dark state diffraction and color separation phenomena.

[0110] For example, there is a third distance d3 between the orthographic projection of the circular opening of the first opening group 1 on the substrate 100 and the orthographic projection of the circular opening of the second opening group 2 on the substrate 100; there is a fourth distance d4 between the orthographic projection of the circular opening of the first opening group 1 on the substrate 100 and the orthographic projection of the circular opening of the third opening group 3 on the substrate 100. For example, the third distance d3 and the fourth distance d4 may be the same or different.

[0111] In some embodiments, in each of the opening groups, the other of the sub-pixel opening and the light-transmitting opening is an elliptical opening with an elliptical planar shape. The elliptical opening has a second identification direction defined by the extension direction of the major axis of the ellipse, and each of the opening groups has a reference angle between the first identification direction and the second identification direction. In the plurality of opening groups of the plurality of first color sub-pixels, the second identification directions of the elliptical openings of adjacent opening groups are also different from each other. For example, the first identification direction and the second identification direction are the same or parallel to each other; or the first identification direction and the second identification direction intersect each other. In some embodiments, the reference angles of adjacent opening groups are the same or may be different.

[0112] Referring to FIG1B, in some embodiments, the sub-pixel opening 103 is a petal opening, and the light-transmitting opening 203 is an elliptical opening with an elliptical planar shape. The elliptical opening has a second identifying direction defined by the extension direction of the major axis of the ellipse. The second identifying direction is used to indicate the orientation of the elliptical opening. For example, the extension direction of the major axis A of the light-transmitting opening 203 is used as its second identifying direction. It should be understood that the second identifying direction is for identifying the orientation of the elliptical opening; other reference points may also be chosen as the identifier for the orientation of the elliptical opening, as long as the same reference object is used as the orientation identifier when comparing the orientations of the elliptical openings of multiple sub-pixels. For example, the extension direction of the minor axis of the elliptical opening may also be used as the identifier for the orientation of the elliptical opening; this disclosure does not limit this.

[0113] In some embodiments, in the plurality of opening groups of the plurality of sub-pixels 200, the second identification directions of the elliptical openings (e.g., light-transmitting openings 203) of adjacent opening groups are also different from each other, i.e., they have different orientations. For example, the second identification directions of the elliptical openings of every two adjacent sub-pixels in the plurality of sub-pixels 200 may all be different. For example, the adjacent opening group may be an opening group of any adjacent sub-pixels, such as an opening group of adjacent sub-pixels 200a in a plurality of sub-pixels 200a, an opening group of adjacent sub-pixels 200b in a plurality of sub-pixels 200b, or an opening group of adjacent sub-pixels 200c in a plurality of sub-pixels 200c; or the plurality of sub-pixels corresponding to these opening groups may be any combination of sub-pixels 200a, 200b, and 200c.

[0114] In some embodiments, during pixel design, adjacent opening groups are rotated relative to each other to have different orientations, and petal openings and elliptical openings within the same opening group can rotate simultaneously, resulting in different first and second identification directions for adjacent opening groups. In some embodiments, as shown in FIG1B, both petal openings and elliptical openings are rotated, and the angular change of the petal opening (e.g., rotation step) can be the same as the angular change of the elliptical opening (e.g., rotation step), thereby keeping the relative positions of the petal openings and elliptical openings in each opening group constant. In other embodiments, both petal openings and elliptical openings are rotated, and the angular change of the petal opening is different from the angular change of the elliptical opening, thereby changing the relative positions of the petal openings and elliptical openings in each opening group.

[0115] For example, each group of openings has a reference angle between a first identifying direction and a second identifying direction, such as the angle between the major axis a of the reference ellipse of the petal opening and the major axis A of the elliptical opening. For example, the reference angles of adjacent groups of openings may be the same. In the embodiment shown in FIG1B, the major axis A of the elliptical opening in each group of openings coincides with the major axis a of the reference ellipse, that is, the reference angle between them is 0 degrees; for example, the reference angles of multiple groups of openings are all 0 degrees. However, this disclosure is not limited thereto. In other embodiments, the major axis a of the reference ellipse of the petal opening and the major axis A of the elliptical opening may extend parallel to each other, or they may intersect each other at a non-zero angle.

[0116] In this document, adjacent sub-pixels may include sub-pixels that are adjacent in the row direction, sub-pixels that are adjacent in the column direction, or sub-pixels that are adjacent in other directions (i.e., directions that intersect the row and column directions) or any combination thereof.

[0117] Referring to Figures 1A and 1B, in some embodiments, the plurality of sub-pixels 200 may include a plurality of sub-pixels 200a, a plurality of sub-pixels 200b, and a plurality of sub-pixels 200c; for example, the plurality of sub-pixels 200 includes a first pixel row PX1 and a second pixel row PX2, wherein the first pixel row PX1 includes a plurality of sub-pixels 200a arranged along a first direction D1; the second pixel row PX2 includes sub-pixels 200b and sub-pixels 200c arranged alternately along the first direction; the plurality of first pixel rows PX1 and the plurality of second pixel rows PX2 are arranged alternately in a second direction D2. The plurality of sub-pixels 200a may be arranged in a column in the second direction D2; the plurality of sub-pixels 200b may be arranged in a column in the second direction D2; and the plurality of sub-pixels 200c may be arranged in a column in the second direction D2.

[0118] In the embodiments shown in Figures 1A and 1B, adjacent sub-pixels can be any of the following: multiple adjacent sub-pixels 200a; multiple adjacent sub-pixels 200b; multiple adjacent sub-pixels 200c; any adjacent sub-pixels 200a, 200b, and 200c, such as adjacent sub-pixels 200a and 200b, adjacent sub-pixels 200b and 200c, adjacent sub-pixels 200a and 200c, etc. For example, multiple adjacent sub-pixels 200a can be adjacent sub-pixels 200a located in the same pixel row PX1, or can be adjacent sub-pixels 200a located in the same pixel column; multiple adjacent sub-pixels 200b can be adjacent sub-pixels 200b located in the same column; multiple adjacent sub-pixels 200c can be adjacent sub-pixels 200c located in the same column. Adjacent sub-pixels 200b and 200c are adjacent sub-pixels located in the same pixel row PX2; adjacent sub-pixels 200a and 200c, or 200a and 200b, can be adjacent sub-pixels located in adjacent pixel rows.

[0119] Figures 1A and 1B schematically illustrate examples where the subpixel openings in each opening group are petal-shaped openings, and the light-transmitting openings are circular or elliptical openings, but this disclosure is not limited thereto. Figures 4A to 7D show schematic plan views of the opening groups of subpixels according to various embodiments of this disclosure, wherein any opening group can be applied to the display panel shown in Figures 1A and 1B.

[0120] In some embodiments, in each of the opening groups, the center of the sub-pixel opening on the substrate may or may not coincide with the center of the light-transmitting opening on the substrate.

[0121] In some embodiments, the orthographic projection of the sub-pixel opening on the substrate lies within the orthographic projection of the light-transmitting opening on the substrate.

[0122] In some embodiments, the boundary of the orthographic projection of the sub-pixel opening is spaced apart from the boundary of the orthographic projection of the light-transmitting opening and does not overlap; or, the orthographic projection of the sub-pixel opening and the orthographic projection of the light-transmitting opening have points that coincide with each other.

[0123] In some embodiments, a portion of the orthographic projection of the subpixel opening onto the substrate extends beyond the boundary of the orthographic projection of the light-transmitting opening onto the substrate.

[0124] The following descriptions of the characteristics of each opening in the opening group and the relative positional relationships between the openings are all from the perspective of a planar view. For example, they are all related features of the orthographic projection of each opening on the substrate and the positional relationships between them.

[0125] For example, in the embodiments shown in Figures 4A to 4G, the sub-pixel opening 103 is a petal-shaped opening, and the light-transmitting opening 203 is a circular opening. The relative positional relationships described below regarding the petal-shaped opening and the circular opening are equivalent to the positional relationships between the sub-pixel opening and the light-transmitting opening.

[0126] Referring to Figures 4A to 4G, in some embodiments, the sub-pixel opening 103 is a petal opening FO, for example, it can be any of the petal openings shown in Figures 3A to 3F. The light-transmitting opening 203 is a circular opening CO.

[0127] In some embodiments, as shown in Figures 4A and 4F, the petal opening FO can be centrally located within the circular opening CO. That is, the orthographic projection of the center OA of the petal opening FO (i.e., the sub-pixel opening 103) onto the substrate can coincide with the orthographic projection of the center OB of the circular opening CO (i.e., the light-transmitting opening 203) onto the substrate. This arrangement can help optimize the light extraction efficiency of the sub-pixel.

[0128] For example, the distance S between the boundary points on opposite sides of the center OA of the petal opening and the boundary of the circular opening can be the same. For example, the distances from the protruding vertices of multiple protrusions of the petal opening FO to the boundary of the circular opening are the same; the distances from multiple intersection points of the petal opening FO to the boundary of the circular opening are the same. In some embodiments, the overall shape of the opening group 300, which is composed of the petal opening and the circular opening, can be a symmetrical shape, for example, it can be symmetrical with respect to the axis of symmetry of the petal opening FO. The axis of symmetry of the petal opening FO may include one or more of the major axis, minor axis, and line connecting the intersection points of the multiple ellipses constituting the petal opening.

[0129] In other embodiments, as shown in Figures 4B-4E and 4G, the petal opening FO may not be centrally located within the circular opening CO; that is, the orthographic projection of the center of the petal opening FO onto the substrate may be offset from the orthographic projection of the center of the circular opening CO onto the substrate. For example, the distance S between the boundary points of the petal opening FO located on opposite sides of the center OA and the boundary of the circular opening may be equal or unequal.

[0130] In some embodiments, as shown in Figures 4A to 4F, the orthographic projection of the petal opening FO onto the substrate lies within the orthographic projection of the circular opening CO onto the substrate. This arrangement can help optimize the light extraction efficiency of the sub-pixel. For example, the orthographic projection area of ​​the circular opening CO is larger than the orthographic projection area of ​​the petal opening FO. In some examples, the distance S between the boundary of the petal opening FO and the boundary of the circular opening CO can range from 0-10 μm, 1.5 μm-10 μm, or 1.5 μm-5 μm.

[0131] For example, as shown in Figures 4A to 4C, the boundary of the petal opening FO is spaced apart from the boundary of the circular opening CO, and they do not overlap, i.e., they do not contact each other. For example, the major axis length of the multiple ellipses constituting the petal opening FO can all be smaller than the diameter of the circular opening CO.

[0132] In the example shown in Figure 4B, the center of the petal opening FO is offset from the center of the circular opening CO. The major axis of the first ellipse 10 and the minor axis of the second ellipse 20 of the petal opening FO coincide with the diameter direction of the circular opening CO. The major axis of the second ellipse 20 coincides with the minor axis of the first ellipse 10, but not with the diameter direction of the circular opening CO. In this example, the boundary points of the petal opening FO located on opposite sides of the major axis of the first ellipse 10 (i.e., symmetrical with respect to the major axis) are equidistant from the boundary of the circular opening by a distance S1; while the boundary points of the petal opening FO located on opposite sides of the major axis of the second ellipse 20 (i.e., symmetrical with respect to the major axis) are equidistant from the boundary of the circular opening CO by a distance S2.

[0133] In the example shown in Figure 4C, the center of the petal opening FO is offset from the center of the circular opening CO, and the extension directions of the major or minor axes of the first ellipse 10 and the second ellipse 20 of the petal opening FO do not coincide with the diameter direction of the circular opening CO. In this example, the distance S between the boundary points located on opposite sides of the major axis of any ellipse of the petal opening and the boundary of the circular opening CO is not the same.

[0134] For example, as shown in Figures 4D to 4F, the boundary of the petal opening FO and the boundary of the circular opening CO may have one or more overlapping points, i.e., single-point contact or multi-point contact. In this document, for the purposes of describing the planar view, two openings in a group of openings that are in contact with each other mean that the orthographic projections of the boundaries of the two openings on the substrate have points that coincide with each other; two openings that are not in contact with each other mean that the orthographic projections of the boundaries of the two openings on the substrate are spaced apart and do not overlap.

[0135] For example, as shown in Figure 4D, the major axis length of the multiple ellipses that form the petal opening is smaller than the diameter of the circular opening, and the multiple protrusions of the multiple ellipses corresponding to the petal opening are in contact with the boundary of the circular opening, that is, forming multi-point contact.

[0136] For example, as shown in Figure 4E, the major axis lengths of the multiple ellipses that form the petal opening are all smaller than the diameter of the circular opening. The protrusion of one ellipse is in contact with the circular opening, while the protrusion of another ellipse is not in contact with the circular opening, thus forming a single-point contact.

[0137] In some embodiments, the major axis length of one or more ellipses constituting the petal opening may be equal to the diameter of the circular opening, and the one or more ellipses may coincide with the center of the circular opening, so that the endpoints of the protrusions of the petal opening corresponding to the one or more ellipses (i.e., the endpoints of the major axis of the ellipses) contact the circular opening.

[0138] For example, as shown in Figure 4F, the major axis of one of the two ellipses forming the petal opening is the same as the diameter of the circular opening, and the two endpoints of this ellipse are in contact with the circular opening; the major axis of the other ellipse forming the petal opening is smaller than the diameter of the circular opening, and therefore does not contact the circular opening. In other examples, the major axis of the other ellipse may also be equal to the diameter of the circular opening, and thus contact the circular opening.

[0139] In other embodiments, a portion of the petal opening FO (i.e., sub-pixel opening 103) extends beyond the boundary of the circular opening CO (i.e., light-transmitting opening 203). For example, the major axis length of one or more ellipses constituting the petal opening may be greater than the diameter of the circular opening; or the major axis length of one or more ellipses constituting the petal opening may be less than or equal to the diameter of the circular opening.

[0140] In this embodiment, the orthographic projection of a portion of the sub-pixel opening 103 onto the substrate extends beyond the boundary of the light-transmitting opening and overlaps with the orthographic projection of the light-shielding layer onto the substrate.

[0141] Figures 5A to 5F show schematic plan views of opening groups according to other embodiments of the present disclosure. In these embodiments, the opening group includes a petal opening and an elliptical opening, wherein the petal opening is a sub-pixel opening and the elliptical opening is a light-transmitting opening. The relative positional relationships described below with respect to the petal opening and the elliptical opening are equivalent to the positional relationships between the sub-pixel opening and the light-transmitting opening.

[0142] Referring to Figures 5A to 5F, in some embodiments, the sub-pixel opening 103 is a petal opening FO, for example, it can be any of the petal openings shown in Figures 3A to 3F; the light-transmitting opening 203 is an elliptical opening EO. The center of the petal opening FO may coincide with the center of the elliptical opening EO. In other examples, the center of the petal opening FO may not coincide with the center of the elliptical opening EO.

[0143] For example, referring to Figures 5A, 5D, and 5F, in some examples, the petal opening FO is located within the elliptical opening EO; that is, the orthographic projection of the subpixel opening 103 onto the substrate is located within the orthographic projection of the light-transmitting opening 203 onto the substrate. For example, the area of ​​the petal opening FO is smaller than the area of ​​the elliptical opening EO.

[0144] For example, as shown in Figures 5A and 5D, the petal opening FO and the elliptical opening EO may have points of contact with each other, that is, the orthogonal projections of the sub-pixel opening and the light-transmitting opening on the substrate have points of overlap. For example, the center of the petal opening FO may coincide with the center of the elliptical opening EO, and the major axis of the elliptical opening EO may coincide with the major or minor axis of the ellipse of the petal opening FO. For example, as shown in Figure 5A, the major axis of an ellipse of the petal opening FO may coincide with and have the same length as the minor axis of the elliptical opening EO, and the endpoint of the major axis of the petal opening contacts the boundary of the elliptical opening (e.g., the endpoint of the minor axis of the ellipse). For example, as shown in Figure 5D, the major axis of an ellipse of the petal opening FO may coincide with and have the same length as the major axis of the elliptical opening EO, and the endpoint of the major axis of the petal opening contacts the boundary of the elliptical opening (e.g., the endpoint of the major axis of the ellipse), but this disclosure is not limited thereto. In other examples, such as those in Figure 5A or Figure 5D, the major axis of the other ellipse of the petal opening may have a longer length, such that the endpoint of the major axis of the other ellipse also contacts the boundary of the elliptical opening; that is, the petal opening FO and the elliptical opening EO may contact each other at both major axis endpoints and both minor axis endpoints of the elliptical opening.

[0145] In the examples of Figures 5A and 5D, the major axes of the multiple ellipses that form the petal opening can also be smaller than the minor axis of the elliptical opening, so that the petal opening does not contact the elliptical opening.

[0146] In some embodiments, as shown in FIG5F, the petal opening FO is located within the elliptical opening EO, and the boundary of the petal opening FO is spaced apart from the boundary of the elliptical opening EO without contacting it. For example, the line connecting the intersection points of the two ellipses constituting the petal opening FO may extend in the same direction as the major axis or minor axis of the elliptical opening EO, i.e., partially coincident with each other. In this example, the length of the major axis of the ellipse constituting the petal opening may be less than or equal to or greater than the length of the minor axis of the elliptical opening.

[0147] In some embodiments, the overall shape of the opening group, consisting of the petal opening FO and the elliptical opening EO, may also be a symmetrical figure, for example, symmetrical about the axis of symmetry of the petal opening. The axis of symmetry of the petal opening may include one or more of the major and minor axes of one or more ellipses and one or more of the lines connecting the intersection points of the ellipses.

[0148] In a similar example shown in Figure 5F, the petal opening FO can also be rotated by a certain angle or offset by a certain distance, or the area of ​​the petal opening FO can be set to be larger so that the boundary of the petal opening FO contacts the boundary of the elliptical opening EO.

[0149] In other examples, as shown in Figures 5B, 5C, and 5E, a portion of the petal opening FO extends beyond the boundary of the elliptical opening EO. For example, one or more protrusions of the petal opening FO may extend beyond the boundary of the elliptical opening; that is, the orthographic projection of a portion of the subpixel opening 103 onto the substrate may lie outside the orthographic projection of the light-transmitting opening 203 onto the substrate and may overlap with the orthographic projection of the light-shielding layer onto the substrate.

[0150] In some embodiments, a portion of the ellipse of the petal opening extends beyond the boundary of the elliptical opening, and another portion of the ellipse may be located within the elliptical opening; or, multiple ellipses of the petal opening may all extend beyond the boundary of the elliptical opening. For example, the protrusion of the petal opening may extend beyond the boundary of the elliptical opening; or, a portion of the central part of the petal opening may also extend beyond the boundary of the elliptical opening.

[0151] For example, as shown in Figure 5B, the first ellipse 10 of the petal opening FO is located within the elliptical opening EO, and the second ellipse 20 extends beyond the boundary of the elliptical opening EO. For example, the two protrusions of the corresponding second ellipse 20 of the petal opening FO extend beyond the boundary of the elliptical opening EO, and the portion of the petal opening FO that extends beyond the elliptical opening EO can be symmetrical with respect to the major axis of the elliptical opening EO.

[0152] For example, as shown in Figure 5E, the first ellipse of the petal opening FO is located within the elliptical opening EO, and the second ellipse 20 extends beyond the boundary of the elliptical opening EO. For example, the two protrusions of the corresponding second ellipse 20 of the petal opening FO extend beyond the boundary of the elliptical opening EO, and the portion of the petal opening FO that extends beyond the elliptical opening EO may be asymmetrical with respect to the major axis of the elliptical opening EO.

[0153] In the examples shown in Figures 5B and 5E, the center of the petal opening FO is located inside the elliptical opening, while the portion of the petal opening FO that extends beyond the elliptical opening is a protrusion.

[0154] Referring to Figure 5C, in some other examples, the first ellipse 10 and the second ellipse 20 of the petal opening FO may both extend beyond the boundary of the elliptical opening EO. For example, a portion of the protrusion of the petal opening FO may extend beyond the boundary of the elliptical opening EO, and a portion of the central portion of the petal opening FO may also extend beyond the boundary of the elliptical opening EO.

[0155] Figures 6A to 6D show schematic cross-sectional views of an opening group according to other embodiments of the present disclosure. In these embodiments, the opening group includes a petal-shaped opening and a circular opening, wherein the sub-pixel opening is a circular opening and the light-transmitting opening is a petal-shaped opening. The relative positional relationships described below with respect to the circular opening and the petal-shaped opening are equivalent to the relative positional relationships between the sub-pixel opening and the light-transmitting opening.

[0156] Referring to Figures 6A to 6D, in some embodiments, in the opening group, the sub-pixel opening 103 is a circular opening CO, while the light-transmitting opening 203 is a petal opening FO. The center of the petal opening FO may or may not coincide with the center of the circular opening CO; for example, Figure 6A shows an example where the center of the circular opening CO coincides with the center of the petal opening FO, and the circular opening CO may be centrally located within the petal opening FO. In some embodiments, the boundary points of the circular opening CO located on opposite sides of its center may be equidistant from the boundary of the petal opening FO. The overall shape of the opening group, consisting of the circular opening CO and the petal opening FO, may be symmetrical, for example, symmetrical with respect to the axis of symmetry of the petal opening. The axis of symmetry of the petal opening may include one or more of the major and minor axes of one or more ellipses and the lines connecting the intersection points of the ellipses. For example, as shown in Figures 6B to 6D, the center of the circular opening CO does not coincide with the center of the petal opening FO, i.e., they are offset from each other.

[0157] In some embodiments, the circular opening CO is located within the petal opening FO, and the boundary of the circular opening CO may or may not contact the petal opening FO, and may be in single-point or multi-point contact.

[0158] For example, as shown in Figure 6B, the circular opening CO is located within the petal opening FO, and the circular opening CO can contact one intersection point of the petal opening FO. For example, as shown in Figure 6C, the circular opening CO is located within the petal opening FO, and the boundary of the circular opening CO is spaced apart from the boundary of the petal opening FO without contacting it. For example, as shown in Figure 6D, the circular opening CO is located within the petal opening FO and contacts multiple intersection points and / or the arc surface of the protrusion of the petal opening FO, thus forming multi-point contact.

[0159] In other embodiments, the orthographic projection of the circular subpixel opening onto the substrate may also extend beyond the boundary of the orthographic projection of the petal-shaped light-transmitting opening onto the substrate.

[0160] Figures 7A to 7D show schematic plan views of opening groups according to other embodiments of the present disclosure. In these embodiments, the opening group includes elliptical openings and petal openings, with the sub-pixel openings being elliptical and the light-transmitting openings being petal-shaped. The relative positional relationships described below with respect to the elliptical openings and petal openings are equivalent to the relative positional relationships between the sub-pixel openings and the light-transmitting openings.

[0161] Referring to Figures 7A to 7D, in some embodiments, in the aperture group, the sub-pixel aperture 103 is an elliptical aperture EO, while the light-transmitting aperture 203 is a petal aperture FO. The following description of the positional relationship between the elliptical aperture EO and the petal aperture FO is equivalent to the positional relationship between the sub-pixel aperture 103 and the light-transmitting aperture 203.

[0162] The centers of the elliptical opening EO and the petal opening FO may or may not coincide. For example, as shown in Figures 7A and 7C, the center of the elliptical opening EO may coincide with the center of the petal opening FO. As shown in Figures 7B and 7D, the center of the elliptical opening EO may not coincide with the center of the petal opening FO, that is, they may be offset from each other.

[0163] In some embodiments, as shown in Figures 7A and 7C, the overall shape of the opening group, consisting of the elliptical opening EO and the petal opening FO, can be a symmetrical figure, for example, symmetrical with respect to the axis of symmetry of the petal opening. The axis of symmetry of the petal opening may include one or more of the major and minor axes of one or more ellipses and one or more of the lines connecting the intersection points of the ellipses.

[0164] For example, as shown in Figure 7A, the major axis of the elliptical opening EO coincides with the major axis of an ellipse of the petal opening FO. The distances between the boundary points of the elliptical opening EO on opposite sides of its center and the boundary of the petal opening FO can be the same. The distances between the boundary points of the elliptical opening EO on opposite sides of its major axis and the boundary of the petal opening FO can be the same. The distances between the boundary points of the elliptical opening EO on opposite sides of its minor axis and the boundary of the petal opening FO can be the same.

[0165] For example, as shown in Figure 7C, the major axis of the elliptical opening EO can coincide with the line connecting the intersection points of the petal opening FO. The distances between the boundary points of the elliptical opening EO on opposite sides of its center and the boundary of the petal opening FO can be the same. The distances between the boundary points of the elliptical opening EO on opposite sides of its major axis and the boundary of the petal opening FO can be the same. The distances between the boundary points of the elliptical opening EO on opposite sides of its minor axis and the boundary of the petal opening FO can be the same.

[0166] As shown in Figures 7A to 7D, the elliptical opening EO can be located inside the petal opening FO, and the boundary of the elliptical opening EO can be either not in contact with the boundary of the petal opening FO or in contact with it, for example, it can be in single-point contact or multi-point contact.

[0167] For example, as shown in Figure 7B, the elliptical opening EO can contact the two intersection points of a protrusion of the petal opening FO, or it can also contact a portion of the arc surface of the protrusion. The part of the elliptical opening EO that contacts the petal opening FO is located on one side of the minor axis of the elliptical opening EO, that is, on opposite sides of the major axis of the elliptical opening EO.

[0168] For example, as shown in Figure 7C, the elliptical opening EO can contact the two intersection points of the petal opening FO located on opposite sides of its center.

[0169] For example, as shown in Figure 7D, the elliptical opening EO can contact two intersection points of a protrusion of the petal opening FO. The part of the elliptical opening EO that contacts the petal opening FO is located on one side of the major axis of the elliptical opening EO, that is, on opposite sides of the minor axis of the elliptical opening.

[0170] In other embodiments, a portion of the elliptical opening EO may also extend beyond the boundary of the petal opening FO.

[0171] In the above embodiments, one of the sub-pixel opening and the light-transmitting opening is a petal opening, while the other of the sub-pixel opening and the light-transmitting opening is circular or elliptical, but this disclosure is not limited thereto.

[0172] In some embodiments, one of the sub-pixel opening and the light-transmitting opening is a petal opening, and the planar shape of the other of the sub-pixel opening and the light-transmitting opening includes a symmetrical closed shape, which includes a circle, an ellipse, a capsule shape, a rounded square, a square, a rectangle, a polygon, an irregular shape, or a petal shape; when the symmetrical closed shape is not circular, the openings with the symmetrical closed shape in the adjacent opening groups of the plurality of first color sub-pixels have different orientations.

[0173] When the planar shape of the other of the sub-pixel opening and the light-transmitting opening is non-circular, the orientation of the non-circular opening in adjacent opening groups in multiple opening groups can also be different, similar to the description of the elliptical opening above, and will not be repeated here.

[0174] In the embodiments of this disclosure, the sub-pixel openings adopt a petal shape or other symmetrical shape, and in some examples, a highly symmetrical shape. In this way, the pixel driving circuit layer located below the sub-pixel openings can be arranged in a more symmetrical manner, which helps to improve the flatness of the anodes in each sub-pixel opening and reduce the reflective surface of the anodes to ambient light. For example, the anodes of each light-emitting device can have a single reflective surface, thereby reducing the reflection of ambient light from the light-transmitting openings of other sub-pixels by the anodes in each sub-pixel openings, which can also help to improve the color separation phenomenon.

[0175] In some embodiments, the display panel includes one or more pixel repeating units, wherein each pixel repeating unit includes multiple sub-pixels arranged in multiple rows and columns along a first direction and a second direction, and has multiple rotation units. Each rotation unit includes multiple sub-pixels arranged (e.g., aligned) in a third direction, the third direction intersecting the first direction and the second direction, and being a direction parallel to the extension of the pixel diagonal connecting the center of the top-left sub-pixel and the center of the bottom-right sub-pixel in the pixel repeating unit; wherein in each rotation unit, the multiple sub-pixels arranged in the third direction rotate sequentially along a rotation direction with a rotation step, the rotation step being the angle between the first identifying directions of the petal openings of every two adjacent sub-pixels, and the rotation direction being a clockwise or counterclockwise direction.

[0176] For example, the rotation step size of each two adjacent rotation units in the plurality of rotation units is different. For example, the rotation direction of each two adjacent rotation units in the plurality of rotation units is different.

[0177] For example, the plurality of rotation units include a first rotation unit; the first rotation unit includes z sub-pixels arranged along the diagonal of the pixel, the z sub-pixels rotating sequentially along a first rotation direction with a rotation step of 180° / z.

[0178] For example, the plurality of rotation units further includes one or more rotation units arranged sequentially on one side of the first rotation unit in a fourth direction perpendicular to the third direction. In the x-th rotation unit among the one or more rotation units, multiple sub-pixels rotate sequentially along the second rotation direction, and the rotation step size is 180° / (z×2). x ), where x is an integer greater than or equal to 1. The second rotation direction may be the same as or different from the first rotation direction.

[0179] For example, when x is odd, the second rotation direction is opposite to the first rotation direction; when x is even, the second rotation direction is the same as the first rotation direction. That is, the rotation directions of every two adjacent rotation units are opposite to each other. In an alternative embodiment, the rotation directions of two adjacent rotation units may also be the same. That is, multiple rotation units may each rotate clockwise or counterclockwise, and the rotation directions of adjacent rotation units may be the same or different.

[0180] Referring to FIG8, in some embodiments, the display panel includes one or more pixel repeating units RU. For example, in the pixel repeating unit RU, multiple sub-pixels 200 can be arranged in a multi-row, multi-column array along a first direction D1 and a second direction D2, such as including multiple first sub-pixel rows PX1 and multiple second sub-pixel rows PX2. Each sub-pixel row includes multiple sub-pixels arranged along the first direction D1; the first sub-pixel rows PX1 and the second sub-pixel rows PX2 can be arranged alternately along the second direction D2; multiple sub-pixels in the multiple first sub-pixel rows PX1 can be aligned in the second direction D2 and arranged in columns; multiple sub-pixels in the multiple second sub-pixel rows PX2 can be aligned in the second direction D2 and arranged in columns. The sub-pixels in the first sub-pixel rows PX1 may not be aligned with the second sub-pixel rows PX2 in the second direction D2, that is, they are offset from each other in the first direction D1.

[0181] In some embodiments, the pixel repeating unit RU includes a plurality of rotation units 210, 211, 212, 213, 214, and 215. Each rotation unit includes a plurality of sub-pixels aligned on a third direction D3. The first direction D3 intersects with the first direction D1 and the second direction D2, and is an extension direction parallel to the pixel diagonal of the pixel repeating unit RU. The pixel diagonal is the line connecting the center of the top-left sub-pixel and the center of the bottom-right sub-pixel among the plurality of sub-pixels in the pixel repeating unit. The alignment of the plurality of sub-pixels in the rotation unit on the third direction D3 means that the orthographic projections of the plurality of sub-pixels on a reference plane perpendicular to the third direction D3 at least partially overlap each other.

[0182] In each rotation unit, multiple sub-pixels 200 rotate sequentially along a rotation direction (e.g., clockwise or counterclockwise) with a rotation step size in the direction from the first sub-pixel 200 to the last sub-pixel 200. The rotation step size is the change in orientation between every two adjacent sub-pixels in that rotation unit, which may be defined, for example, by the angle between the first identifying directions of the petal openings of two adjacent sub-pixels. For example, each petal opening may have a rotation angle defined by the angle between its first identifying direction and a reference direction (e.g., first direction D1 or second direction D2); the angle between the first identifying directions of the petal openings of two adjacent sub-pixels is equivalent to the difference in the rotation angles of the petal openings of the two sub-pixels. It should be understood that when comparing the rotation angles of multiple petal openings, the same direction is selected as the reference direction, for example, both first direction D1 or both second direction D2 are selected as the reference direction. The rotation direction refers to the direction in which the opening identifying direction of the next sub-pixel in the same rotation unit rotates relative to the opening identifying direction of the previous sub-pixel. Here, the first sub-pixel of the rotation unit can be the top-left sub-pixel, and the corresponding last sub-pixel can be the bottom-right sub-pixel; or the first sub-pixel of the rotation unit can be the bottom-right sub-pixel, and the corresponding last sub-pixel can be the bottom-left sub-pixel.

[0183] Figure 8 illustrates, with arrows as an example, the rotation order of multiple sub-pixels in each rotation unit, i.e., the direction from the first sub-pixel to the last sub-pixel. For example, during pixel design, multiple sub-pixels of a pixel repetition unit are divided into multiple rotation units. When designing the orientation of each pixel in each rotation unit, the rotation angle of the first sub-pixel is used as the initial angle α. The initial angle α can be any angle. The rotation angles of multiple sub-pixels arranged after the first sub-pixel are each increased by a rotation step c relative to the previous sub-pixel along a single rotation direction. For example, the rotation angle of the t-th sub-pixel in the rotation unit is α + c × (t - 1).

[0184] In some embodiments, the rotation step size of adjacent rotation units among the plurality of rotation units 210-215 may be different from each other; for example, the rotation step size of every two adjacent rotation units may be different. This arrangement can help to make the opening orientation of adjacent sub-pixels different.

[0185] In some embodiments, the multiple sub-pixels of the rotation unit 210 are aligned on the pixel diagonal and may also be referred to as the first rotation unit. The rotation step size of the first rotation unit may be used as the reference rotation step size. The rotation step size of one or more rotation units arranged sequentially on one side of the first rotation unit in the fourth direction D4 perpendicular to the third direction D3 may be reduced sequentially relative to the reference rotation compensation, for example, by 1 / 2.

[0186] For example, the first rotation unit 210 includes z (e.g., 7) sub-pixels, which rotate sequentially along a first rotation direction (e.g., clockwise) with a rotation step size of 180° / z. That is, the rotation angle difference between any two adjacent sub-pixels in the first rotation unit 210 is 180° / z. Setting the rotation step size to 180° / z ensures that all sub-pixels in the rotation unit have different orientations.

[0187] Rotation unit 211 and rotation unit 213 are arranged sequentially on one side of the first rotation unit 210 in the fourth direction D4. That is, rotation unit 211 is the first rotation unit arranged on one side of the first rotation unit 210, and its rotation step is 180° / 2z; rotation unit 213 is the second rotation unit arranged on one side of the first rotation unit 210, and its rotation step is 180° / 4z.

[0188] Rotation units 212, 214, and 215 are arranged sequentially on one side of the first rotation unit 210 in the fourth direction D4. That is, rotation unit 212 is the first rotation unit arranged on one side of the first rotation unit 210, with a rotation step of 180° / 2z; rotation unit 214 is the second rotation unit arranged on one side of the first rotation unit 210, with a rotation step of 180° / 4z; and rotation unit 215 is the third rotation unit arranged on one side of the first rotation unit 210, with a rotation step of 180° / 8z.

[0189] In some embodiments, the rotation directions of two adjacent rotating units are also different; for example, the rotation directions of two adjacent rotating units may be opposite to each other. This arrangement can help to make the openings of adjacent sub-pixels face different directions.

[0190] For example, in rotation unit 210, multiple sub-pixels rotate clockwise relative to each other; that is, in a plurality of sub-pixels arranged in the direction indicated by the arrow, the next sub-pixel rotates clockwise relative to the previous sub-pixel. In rotation units 211 and 212 adjacent to rotation unit 210, the rotation direction of multiple sub-pixels can be counterclockwise; that is, in a plurality of sub-pixels arranged in the direction indicated by the arrow, the next sub-pixel rotates counterclockwise relative to the previous sub-pixel. The rotation direction of rotation units 213 and 214 can be clockwise; and the rotation direction of rotation unit 215 can be counterclockwise. In some embodiments, the order in which multiple sub-pixels in adjacent rotation units rotate (i.e., the direction indicated by the arrows in the figure) is opposite to each other. The first sub-pixel (or initial sub-pixel) in each rotation unit is adjacent to the last sub-pixel in the adjacent rotation unit, and the orientations of these two sub-pixels are also different from each other. That is, the initial rotation angle in each rotation unit is different from the rotation angle of the last sub-pixel in the adjacent rotation unit, for example, it can be 1 / 2 of the rotation angle of the last sub-pixel in the adjacent rotation unit. The initial rotation angles of adjacent rotation units can be the same or different from each other.

[0191] In some embodiments, the initial rotation angle of the initial sub-pixel in each rotation unit can be different from that of the adjacent sub-pixels in adjacent rotation units, and can be any angle, for example, it can be half the rotation angle of the adjacent sub-pixel. In other embodiments, the rotation order of multiple sub-pixels in adjacent rotation units (i.e., the direction of the arrows in the figure) can also be the same for each other, for example, they can all be in the direction from the upper left to the lower right in the figure, or they can be in the direction from the lower right to the upper left in the figure. In this way, the initial sub-pixels of adjacent rotation units are adjacent to each other and can have different rotation angles; for example, if the first rotation unit and the second rotation unit are adjacent to each other, and the first initial sub-pixel of the first rotation unit and the second initial sub-pixel of the second rotation unit are adjacent to each other, then the initial rotation angle of the second initial sub-pixel can be different from the initial rotation angle of the first initial sub-pixel, for example, it can be half the initial rotation angle of the first initial sub-pixel.

[0192] In other embodiments, the display panel includes one or more pixel repeating units, each pixel repeating unit including a plurality of sub-pixels arranged in an array along a first direction and a second direction, and having a plurality of annular rotating units arranged sequentially from the outside to the inside, each annular rotating unit including a plurality of sub-pixels located on the same annular connecting line; in each annular rotating unit, along the extending direction of the annular connecting line, the plurality of sub-pixels rotate sequentially along a rotation direction with a rotation step, the rotation step being the angle value between the first identifying directions of the petal openings of every two adjacent sub-pixels, the rotation direction being a clockwise direction or a counterclockwise direction.

[0193] In some embodiments, the rotation step size of the plurality of annular rotation units in the pixel repeating unit decreases sequentially from the outside to the inside.

[0194] In some embodiments, the outermost first annular rotation unit among the plurality of annular rotation units has z sub-pixels, and the z sub-pixels rotate sequentially along a first rotation direction with a rotation step of 180° / z.

[0195] In some embodiments, in the y-th annular rotation unit counting inward from the first annular rotation unit, the rotation step size of the plurality of sub-pixels is 180° / (z×2). y-1 ), y≥2.

[0196] Figure 9 shows a schematic plan view of a display panel according to other embodiments of the present disclosure, illustrating a schematic diagram of a plurality of sub-pixels in a pixel repeating unit being oriented in a different rotational manner.

[0197] Referring to Figure 9, for example, a display panel may include one or more pixel repeating units RU, each pixel repeating unit RU including multiple sub-pixels 200 arranged in an array along a first direction D1 and a second direction D2. The arrangement of the multiple sub-pixels shown in Figure 9 is similar to that in Figure 8, except that the embodiment in Figure 9 uses a different method for dividing and rotating the rotating units. For example, the pixel repeating unit RU has multiple annular rotating units 310, 320, and 330 arranged sequentially from the outside to the inside, each annular rotating unit including multiple sub-pixels, and the multiple sub-pixels are located on the same annular connecting line, for example, the centers of the multiple sub-pixels are on the same annular connecting line.

[0198] For example, a pixel repetition unit RU includes g rows and h columns of sub-pixels and has multiple annular rotation units, wherein the f-th annular rotation unit includes multiple sub-pixels located in the f-th and g+1-f-th rows and multiple sub-pixels in the f-th and h+1-f-th columns. In some examples, g = h, 1 ≤ f < g, h.

[0199] For example, the pixel repeating unit RU includes 8 rows and 8 columns of sub-pixels and has 3 annular rotation units. The first annular rotation unit 310 includes multiple sub-pixels located in the 1st and 8th rows and multiple sub-pixels located in the 1st and 8th columns; the second annular rotation unit 320 includes multiple sub-pixels located in the 2nd and 7th rows and multiple sub-pixels located in the 2nd and 7th columns; and the third annular rotation unit 330 includes multiple sub-pixels located in the 3rd and 6th rows and multiple sub-pixels located in the 3rd and 6th columns.

[0200] In this embodiment, multiple sub-pixels located in the same pixel row may be located in the same or different rotation units. For example, multiple sub-pixels located in the 1st pixel row or the gth pixel row may be located in the same rotation unit; while for other pixel rows, multiple sub-pixels in the same pixel row may be located in different rotation units. Similarly, multiple sub-pixels located in the same pixel column may be located in the same or different rotation units. For example, multiple sub-pixels located in the 1st pixel column or the hth pixel column may be located in the same rotation unit; while for other pixel columns, multiple sub-pixels in the same pixel column may be located in different rotation units.

[0201] In each annular rotation unit, along the extension direction of the annular connecting line, such as the direction indicated by the arrow in Figure 9, multiple sub-pixels rotate sequentially in a rotation direction (e.g., clockwise or counterclockwise) with a rotation step size. The rotation step size is the angle between the first identifying directions of the petal openings of every two adjacent sub-pixels in the annular rotation unit, and is also the difference in the rotation angles of every two adjacent sub-pixels. It should be understood that the direction of the annular connecting line, i.e., the order in which the multiple sub-pixels rotate, is schematically shown by arrows in Figure 9. However, the arrow direction shown in Figure 9 is only illustrative. The arrow direction of the annular connecting line can also be the opposite direction shown in the figure, and the arrow directions of the annular connecting lines of multiple annular rotation units can be the same or different. The arrow directions of adjacent annular rotation units can be the same or opposite, as long as the openings of adjacent sub-pixels can be oriented differently through rotation.

[0202] For example, in each annular rotation unit, any sub-pixel can be selected as the initial sub-pixel (i.e., the first sub-pixel), and the rotation angle of this initial sub-pixel is taken as the initial angle α. Then, along the extension direction of the annular line, each sub-pixel rotates relative to its previous adjacent sub-pixel by a rotation step. For example, if the annular rotation unit includes r sub-pixels, the rotation angle of the first sub-pixel is the initial angle α, and assuming the rotation step is c, then the rotation angle of the t-th sub-pixel is α + c × (t - 1). It should be understood that in the same annular rotation unit, multiple sub-pixels rotate in the same direction relative to their previous adjacent sub-pixels, i.e., multiple sub-pixels rotate clockwise or counterclockwise. In the same annular rotation unit, multiple sub-pixels rotate with the same rotation step, i.e., the difference in rotation angle between different adjacent sub-pixels is the same.

[0203] In some embodiments, the rotation step size of the plurality of annular rotation units arranged from the outside to the inside in the pixel repeating unit RU may be different from each other, for example, they may decrease sequentially, for example, they may decrease sequentially by 1 / 2.

[0204] For example, the outermost first rotation unit 310 has z (e.g., 14) sub-pixels, which rotate sequentially in a clockwise direction with a rotation step of 180° / z, for example, 180° / 14. Setting the rotation step to 180° / z allows multiple sub-pixels in this rotation unit to have different orientations.

[0205] In the y-th annular rotation unit counting inwards from the first annular rotation unit, the rotation step size of multiple sub-pixels is 180° / (z×2). (y-1) ), y≥2.

[0206] For example, the rotation step size of multiple sub-pixels in the second annular rotation unit 320 is 180° / (z×2). (2-1) = 180° / 2z, for example, 180° / 28; the rotation step size of multiple sub-pixels in the third annular rotation unit 330 is 180° / (z×2) (3-1) = 180° / 4z, for example, 180° / 56.

[0207] In some embodiments, the rotation direction of each rotating unit can be selected as clockwise or counterclockwise, and the rotation directions of sub-pixels in adjacent rotating units can be the same or opposite to each other. This disclosure does not limit this, as long as the rotation can make the openings of adjacent sub-pixels in the multiple sub-pixels face different directions.

[0208] In some embodiments, the pixel repeating unit RU further includes one or more sub-pixels located within the innermost annular rotating unit 330, and the one or more sub-pixels can be randomly rotated at any angle, as long as their orientation is different from that of the adjacent sub-pixels.

[0209] By using the pixel rotation method described above, multiple sub-pixels in each rotation unit can have different rotation angles, i.e., different orientations. For example, adjacent sub-pixels in a pixel repetition unit can have different orientations.

[0210] In some embodiments, the display panel includes one or more pixel repeating units, each pixel repeating unit having multiple sub-pixels including multiple sub-pixel rows and multiple sub-pixel columns arranged in an array, each sub-pixel having a rotation angle defined by the angle between a first identifying direction of its corresponding petal opening and a reference direction; each sub-pixel row includes multiple sub-pixels arranged along a first direction, and the rotation angles of the multiple sub-pixels increase and / or decrease sequentially; each sub-pixel column includes multiple sub-pixels arranged along a second direction, and the rotation angles of the multiple sub-pixels increase and / or decrease sequentially.

[0211] In some embodiments, the rotation angle of each pair of adjacent pixels in each pixel row or each pixel column is different.

[0212] For example, Figures 10A and 10B show schematic diagrams of the rotation angles of a plurality of subpixels of a pixel repeating unit in a display panel according to other embodiments of the present disclosure. The numerical unit of the rotation angle is degrees (°).

[0213] In some embodiments, the plurality of sub-pixels comprises n rows and m columns of sub-pixels, and the sub-pixel in the first row and first column has an initial rotation angle α, and the minimum angle change between adjacent sub-pixels is c; wherein for the sub-pixel in the i-th row and j-th column, when i+j≤n+1, the rotation angle of the sub-pixel is governed by Formula 1, which is α+c(i+j-2); when i+j>n+1, the rotation angle of the sub-pixel is governed by Formula 2, which is α+c(i+j-2-n). In some embodiments, such as the example shown in Figure 10A, all sub-pixels in the n rows and m columns can be governed by either Formula 1 or Formula 2, for example, i≤n, j≤m. For example, n=m.

[0214] In some embodiments, such as the example shown in Figure 10B, Formulas 1 and 2 above apply to all sub-pixels from row 1 to row (n-1), i.e., in Formulas 1 and 2, i < n and j ≤ m. For the sub-pixels in the last row, i.e. the sub-pixel in row n and column j, the rotation angle of the sub-pixel is given by Formula 3, which is α + c(nj).

[0215] Referring to Figures 10A and 10B, for example, a pixel repeating unit includes 10 × 10 subpixels and has 10 subpixel rows and 10 subpixel columns. Each subpixel has a rotation angle defined by the angle between the first identifying direction of its corresponding opening group and the reference direction. It should be understood that the rotation angle of the subpixel shown in Figures 10A and 10B is the rotation angle of the petal opening in the opening group corresponding to the subpixel. The opening groups of multiple subpixels can adopt the opening combination of any of the above embodiments, which will not be described again here.

[0216] Each subpixel row includes multiple subpixels arranged along a first direction D1, and the rotation angles of the multiple subpixels can be increased and / or decreased sequentially; each subpixel column includes multiple subpixels arranged along a second direction D2, and the rotation angles of the multiple subpixels can be increased and / or decreased sequentially.

[0217] For example, the rotation angles of multiple subpixels located in the same subpixel row can increase sequentially; or decrease sequentially; or first increase sequentially, then decrease, and then increase sequentially again. Similarly, the rotation angles of multiple subpixels located in the same subpixel column can increase sequentially; or decrease sequentially; or first increase sequentially, then decrease, and then increase sequentially again.

[0218] In some embodiments, the rotation angles of each pair of adjacent sub-pixels located in the same pixel row or the same pixel column are different.

[0219] For example, a pixel repeating unit includes multiple rotation repeating units. The minimum rotation angle in each rotation repeating unit is the initial rotation angle α. The rotation step size of adjacent sub-pixels in each rotation repeating unit is c, and the maximum rotation angle of multiple sub-pixels is α + c × (m - 1), where m is the column number. That is, the rotation angle of the last sub-pixel in the first row (i.e., the sub-pixel in the m-th column of the first row) is the maximum rotation angle.

[0220] A single pixel row may include one or more rotation repeating units, and starting from the first sub-pixel of the pixel row, the multiple sub-pixels rotate sequentially in a rotation direction with a rotation step size c. When a single pixel row includes multiple rotation repeating units, when the rotation angle of a sub-pixel in the row reaches the maximum rotation angle, the rotation angle of the next sub-pixel returns to the initial rotation angle, and subsequent sub-pixels rotate sequentially in the next rotation repeating unit.

[0221] For example, in the examples shown in Figures 10A and 10B, the sub-pixel in the first row and first column has a rotation angle of 0 degrees. The first row of sub-pixels includes one rotation repeating unit, in which the rotation step of multiple sub-pixels is 10 degrees. In each rotation repeating unit, the minimum rotation angle is 0 degrees, the rotation step is 10 degrees, and the maximum rotation angle is 90 degrees.

[0222] In the sub-pixel rows from row 2 to row 9, each sub-pixel row includes two rotation repeating units, where the rotation angle of the first sub-pixel of the first rotation repeating unit is (row number - 1) × rotation step (10 degrees); when the last sub-pixel of the first rotation repeating unit of the row rotates to 90 degrees, the next adjacent sub-pixel becomes the first sub-pixel of the next rotation repeating unit, and has an initial rotation angle of 0 degrees; then, in the next rotation repeating unit, the rotation angles of multiple sub-pixels increase sequentially with a rotation step (10 degrees).

[0223] In the examples of Figures 10A and 10B, the rotation angles of the subpixels from row 1 to row 9 are subject to Formula 1 and Formula 2 as described above. In the example of Figure 10A, the rotation angles of the subpixels in the last row, i.e., row 10, are also subject to Formula 1 and Formula 2. That is, the rotation angle of the next subpixel after the subpixel with a rotation angle of 90 degrees in this row is the initial rotation angle of 0 degrees, and the rotation angles of subsequent subpixels increase sequentially.

[0224] In the example of Figure 10B, the rotation angle of the sub-pixels in the last row, i.e., the 10th row, applies Formula 3 above. For example, for the 10th row of sub-pixels, the rotation angle of the first sub-pixel is 90 degrees, and the rotation angles of multiple sub-pixels in this row decrease sequentially with a rotation step of 10 degrees.

[0225] In the examples shown in Figures 10A and 10B, among multiple sub-pixels in n rows and m columns, the rotation angles of multiple sub-pixels in the same row are all different; for example, the number of rotation angle types (i.e., the number of orientations of multiple sub-pixels) of multiple sub-pixels in each row is the same as the number of sub-pixels in that row.

[0226] In the example shown in Figure 10A, the rotation angles of multiple sub-pixels located in the same column are also different; for example, the number of rotation angle types (i.e., the orientation of multiple sub-pixels) of multiple sub-pixels in each column is the same as the number of sub-pixels in that column.

[0227] In the example shown in Figure 10B, among multiple sub-pixels located in the same column, some (e.g., most) of the sub-pixels have different rotation angles, and some sub-pixels may also have the same rotation angle, but sub-pixels with the same rotation angle are not adjacent to each other. For example, the rotation angles of every two adjacent sub-pixels are also different.

[0228] In some embodiments, when the petal opening of a sub-pixel is rotated relative to the petal opening of an adjacent sub-pixel to have a different first identification direction, another opening in the opening group of the sub-pixel corresponding to the petal opening is also rotated to have a different second identification direction relative to the adjacent sub-pixel.

[0229] For example, in the examples of Figures 8 to 10B, the rotation of multiple sub-pixels is described with reference to the orientation of the petal openings of the opening group. When another opening in the opening group is a non-circular opening, the non-circular opening rotates simultaneously with the rotation of the petal opening. That is, the other openings of the multiple sub-pixels also rotate relative to each other in a similar manner, thus having different orientations. For example, in pixel design, the relative positional relationship between the petal openings and another opening in the opening group of multiple sub-pixels remains unchanged; only the orientation of the opening group of multiple sub-pixels is changed by rotation, thereby improving diffraction and color separation phenomena. In some embodiments, in pixel design, the center distance (i.e., the distance between the centers of the openings) of the corresponding openings in the opening group of multiple sub-pixels can remain constant, while the spacing between different sub-pixels is changed by changing the rotation angle of the openings. For example, the center distance of the petal openings of multiple sub-pixels can be the same, but because the petal openings have different orientations, the spacing between different adjacent petal openings is different.

[0230] It should be understood that the rotation methods of multiple sub-pixels in multiple sub-pixel units in the above embodiments are illustrative examples, and this disclosure is not limited thereto. As long as the rotation method can ensure that the rotation angles of adjacent sub-pixels in the same rotation unit, the same pixel row, or the same pixel column are different from each other, it is acceptable.

[0231] In some embodiments of the display panel, the plurality of sub-pixels includes a plurality of first pixel rows and a plurality of second pixel rows. Each first pixel row includes a plurality of first sub-pixels arranged along a first direction, and each second pixel row includes a plurality of second sub-pixels and a plurality of third sub-pixels arranged alternately along the first direction. The plurality of first pixel rows and the plurality of second pixel rows are arranged alternately along a second direction intersecting the first direction. At least one of the first sub-pixels, the second sub-pixels, and the third sub-pixels is a first color sub-pixel.

[0232] For example, referring to Figures 1A, 1B, 8, and 9, in some embodiments, the plurality of sub-pixels includes a first pixel row PX1 and a second pixel row PX2. Each first pixel row PX1 includes a plurality of first sub-pixels 200a arranged along a first direction D1, and each second pixel row PX2 includes a plurality of second sub-pixels 200b and a third sub-pixel 200c arranged along the first direction D1. The plurality of first pixel rows PX1 and the plurality of second pixel rows PX2 are arranged alternately along a second direction D2.

[0233] In some embodiments, the first sub-pixel 200a, the second sub-pixel 200b, and the third sub-pixel 200c can be sub-pixels of the same color or different colors, i.e., they can be configured to emit light of the same color or different colors. For example, the first sub-pixel 200a, the second sub-pixel 200b, and the third sub-pixel 200c can all be sub-pixels of the same color; or at least two of the first sub-pixel 200a, the second sub-pixel 200b, and the third sub-pixel 200c can be sub-pixels of different colors. For example, at least one of the first sub-pixel 200a, the second sub-pixel 200b, and the third sub-pixel 200c is a sub-pixel of a first color.

[0234] In some embodiments of the display panel, a plurality of sub-pixels include a plurality of first color sub-pixels, and also include a plurality of second color sub-pixels and a plurality of third color sub-pixels, and the display panel has at least one of the following features: in the plurality of opening groups of the plurality of second color sub-pixels, the first identification direction of the petal openings of adjacent opening groups is different; in the plurality of opening groups of the plurality of third color sub-pixels, the first identification direction of the petal openings of adjacent opening groups of adjacent opening groups of different colors has different first identification directions, that is, different rotation angles.

[0235] For example, multiple first sub-pixels 200a are first color sub-pixels, multiple second sub-pixels 200b are second color sub-pixels, and multiple third sub-pixels 200c are third color sub-pixels. For instance, the first color sub-pixel is a green sub-pixel configured to emit green light, the second color sub-pixel is a red sub-pixel configured to emit red light, and the third color sub-pixel is a blue sub-pixel configured to emit blue light.

[0236] The colors of the first sub-pixel 200a, the second sub-pixel 200b, and the third sub-pixel 200c can be selected from one of the following colors: red, blue, green, and white. For example, the first color mentioned above can be one of red, blue, green, and white.

[0237] In some embodiments, as shown in FIG8, in the same rotation unit, every two adjacent sub-pixels are sub-pixels of different colors and have different rotation angles. The rotation angles of adjacent sub-pixels located in adjacent rotation units may also be different.

[0238] In some embodiments, as shown in FIG9, the same rotation unit may include sub-pixels of the same color and may include sub-pixels of different colors; adjacent sub-pixels in the same rotation unit have different rotation angles.

[0239] For example, in the examples shown in Figures 8 and / or 9, adjacent sub-pixels located in the same pixel row may have different rotation angles, and adjacent sub-pixels located in the same pixel column may have different rotation angles. For example, adjacent first sub-pixels 200a in the first pixel row have different rotation angles, and adjacent second sub-pixels 200b and third sub-pixels 200c in the second pixel row have different rotation angles. In some embodiments, sub-pixels located in the same sub-pixel column are of the same color, and the rotation angles of adjacent sub-pixels in the same sub-pixel column are also different from each other.

[0240] In some embodiments, among the multiple sub-pixels of the display panel, multiple sub-pixels of only one color may be rotated to have different rotation angles, or sub-pixels of two or three colors may be rotated to have different rotation angles. For example, the rotation angles of adjacent sub-pixels of each color may be different, and the rotation steps of the sub-pixels of different colors may be different from each other.

[0241] In the examples shown in Figures 8 and 9, when the same rotation unit includes sub-pixels of multiple colors, all sub-pixels of multiple colors may be rotated, or only some sub-pixels of certain colors may be rotated while others remain unrotated. Furthermore, when sub-pixels of multiple colors are rotated, the rotation step size and / or rotation angle of the different color sub-pixels may differ from each other.

[0242] In these embodiments, the multiple sub-pixels in the pixel repeating unit adopt a pentile pixel arrangement, wherein the first sub-pixel 200a, the adjacent second sub-pixel 200b, and the third sub-pixel 200c form a pixel, and some sub-pixels are shared by adjacent pixels. For example, the second sub-pixel 200b or the third sub-pixel 200c can be used as a common pixel of adjacent pixels. In some embodiments, the pixel repeating unit RU may include 4×4 pixels, 8×8 pixels, etc., and each pixel includes multiple sub-pixels, such as red sub-pixels, blue sub-pixels, and green sub-pixels; Figures 8 and 9 show a repeating unit of 4×4 pixels arranged in a pentile manner, but this disclosure is not limited thereto. In other embodiments, the multiple sub-pixels in the pixel repeating unit may also adopt a real RGB pixel arrangement, and the pixel design can be performed in a similar rotation manner. In some embodiments, the multiple sub-pixels in the pixel repeating unit shown in Figures 8 and 9 may also be monochrome sub-pixels. This disclosure may also adopt other types of pixel arrangement, such as RRGB pixel arrangement, and this disclosure does not limit the pixel arrangement.

[0243] It should be understood that the number of rotation units included in the pixel repeating unit shown in the figure, and the number of pixels contained in each rotation unit, are for illustrative purposes only, and this disclosure does not impose any limitations on them.

[0244] In the examples shown in Figures 10A and 10B, multiple sub-pixels may include sub-pixels of the same color, for example, all of them may be sub-pixels of a single color; or, multiple sub-pixels may include sub-pixels of different colors. In this pixel repetition unit, the rotation angles of every two adjacent sub-pixels in the same pixel row are different, and the rotation angles of every two adjacent sub-pixels in the same pixel column are also different.

[0245] In embodiments of this disclosure, at least one opening in the group of openings of the sub-pixels is a petal opening. The petal opening has a relatively large area and can be rotated to change the orientation of different sub-pixels relative to the circular opening, thereby improving diffraction and color separation phenomena.

[0246] In some implementations, the eccentricity of the ellipse forming the petal shape can be 0-0.9.

[0247] Comparing the data of petal shape 1 with an eccentricity of 0.5 and petal shape 2 with an eccentricity of 0.7, it can be seen that the smaller the eccentricity of the ellipse constituting the petal shape, the larger the area of ​​the petal shape. Therefore, the loss of the opening area of ​​the corresponding sub-pixels is smaller, which is more conducive to increasing the pixel aperture ratio. This disclosure allows setting an appropriate eccentricity according to actual product requirements.

[0248] The embodiments disclosed herein use a petal shape as the opening shape in the opening group, which can improve the pixel aperture ratio by giving the sub-pixel a larger opening area, and can also change the orientation of different sub-pixels by rotating the petal shape, thereby improving the effect of dark state diffraction and color separation.

[0249] Figure 11 shows a simulated diffraction pattern of a display substrate according to an embodiment of the present disclosure, wherein one of the opening groups of the sub-pixels adopts a petal opening, and the petal openings of adjacent sub-pixels have different orientations. In the sub-pixels of the embodiments of the present disclosure, at least one of the opening groups adopts a petal opening, and by rotating, the openings of adjacent sub-pixels are made to have different orientations, thereby breaking the regular arrangement of sub-pixels, disrupting the stable interference of diffracted light between different sub-pixels, thereby effectively blurring the color separation aperture, improving the color separation phenomenon, and enhancing the user experience.

[0250] This disclosure also provides a display panel having a plurality of sub-pixels and comprising: a substrate; a pixel defining layer located on one side of the substrate and having a plurality of sub-pixel openings to define the light-emitting areas of the plurality of sub-pixels; and a light-shielding layer located on the side of the pixel defining layer away from the substrate and having a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings correspond one-to-one with the plurality of sub-pixel openings and constitute a plurality of opening groups, each sub-pixel including one of the opening groups, wherein in each of the opening groups, the orthographic projection of the sub-pixel opening on the substrate and the orthographic projection of the light-transmitting opening on the substrate at least partially overlap, one of the sub-pixel openings and the light-transmitting openings being a petal opening with a planar petal shape, the petal shape including a combined shape formed by at least two intersecting and partially overlapping ellipses, wherein the major axes of the at least two ellipses intersect, the petal opening having a first identifying direction defined by the major axis of a reference ellipse among the at least two ellipses constituting the petal shape, wherein in at least some of the sub-pixels of the plurality of sub-pixels, the first identifying directions of the petal openings of adjacent opening groups are different.

[0251] This disclosure also provides a display panel having a plurality of sub-pixels, and comprising: a substrate; a pixel defining layer located on one side of the substrate and having a plurality of sub-pixel openings to define the light-emitting areas of the plurality of sub-pixels; and a light-shielding layer located on the side of the pixel defining layer away from the substrate and having a plurality of light-transmitting openings, wherein the plurality of light-transmitting openings correspond one-to-one with the plurality of sub-pixel openings and constitute a plurality of opening groups, each sub-pixel including one of the opening groups, wherein in each of the opening groups, the orthographic projection of the sub-pixel opening on the substrate and the orthographic projection of the light-transmitting opening on the substrate are perpendicular to each other. The orthographic projections at least partially overlap, and at least one of the sub-pixel openings and the light-transmitting openings is a petal opening with a planar petal shape. The petal shape includes a combination shape formed by the intersection and partial overlap of multiple basic shapes. The petal opening includes a central portion and multiple protrusions. The central portion is the part of the multiple basic shapes that overlap with each other, and the multiple protrusions include the parts of each of the basic shapes that do not overlap with other basic shapes. The multiple protrusions protrude from the central portion and have notches between adjacent protrusions. The multiple basic shapes include multiple ellipses, or include circles and one or more ellipses.

[0252] In the above embodiments, the present disclosure is illustrated using an OLED display panel as an example, but the present disclosure is not limited thereto. The technical solutions employing petal-shaped openings and / or changing the opening orientation of adjacent sub-pixels by rotating the opening shape in the embodiments of the present disclosure can also be applied to other types of display devices, such as liquid crystal displays (LCDs). For example, an LCD display device includes a light-shielding layer (e.g., a black matrix layer) and a light-transmitting opening defined by the light-shielding layer, but does not include a pixel defining layer and sub-pixel openings defined by the sub-pixel defining layer; the concepts of opening shapes and / or changing the orientation of adjacent openings by rotation in the various embodiments of the present disclosure can be applied to the light-transmitting openings of an LCD display device, and can achieve the same or similar technical effects as the embodiments of the present disclosure.

[0253] At least one embodiment of this disclosure also provides a display device including the display panel described in any of the above embodiments. FIG12 is a schematic diagram of a display device provided in an embodiment of this disclosure. As shown in FIG12, the display device 600 includes the above-described display panel 500. Thus, the display device has the same technical effects described above for the display substrate, namely, it can also improve dark-state diffraction and color separation phenomena.

[0254] In some examples, the aforementioned display device may be an electronic product with display function, such as a television, computer monitor, laptop computer, tablet computer, mobile phone, navigator, or in-vehicle display.

[0255] The following points need to be explained:

[0256] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0257] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure can be combined with each other.

[0258] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

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