Pixel arrangement structure, display panel and display device

Abstract

The present application relates to a pixel arrangement structure, a first sub-pixel has a center coinciding with a vertex of a first virtual quadrangle; a second sub-pixel and a third sub-pixel are located in the first virtual quadrangle; the second sub-pixel has a larger opening area than the first sub-pixel and the third sub-pixel. In this way, on the one hand, a truly meaningful Real-RGB display can be realized, each pixel can display all colors, and the display details are better. On the other hand, the periphery of each first sub-pixel is also surrounded by the second sub-pixel and the third sub-pixel, thereby preventing color deviation. On the other hand, the opening area of the second sub-pixel is larger than that of the first sub-pixel and the third sub-pixel, which can reduce the display color deviation caused by the different decay rates of organic light-emitting materials emitting different color lights to a certain extent. A display panel and a display device are also provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a pixel arrangement structure, a display panel and a display device. BACKGROUND

[0002] Organic Light Emitting Diode (OLED) display technology is considered as the most potential new flat panel display technology in the next generation. At present, OLED display panel usually adopts red (R), blue (B) and green (G) three color pixels arranged in a fixed structure, but the existing pixel arrangement structure still has the problem of affecting the display effect of OLED display device due to the characteristics of organic light emitting material. SUMMARY

[0003] Therefore, it is necessary to provide a pixel arrangement structure which can realize Real-RGB display and improve display color cast.

[0004] According to an aspect of the present application, a pixel arrangement structure is provided, comprising:

[0005] a first sub-pixel having a center coinciding with a vertex of a first virtual quadrangle;

[0006] a second sub-pixel located in the first virtual quadrangle and spaced apart from the first sub-pixel; and

[0007] a third sub-pixel located in the first virtual quadrangle and spaced apart from the first sub-pixel and the second sub-pixel;

[0008] wherein the second sub-pixel has a larger opening area than the first sub-pixel and the third sub-pixel.

[0009] The pixel arrangement structure can realize Real-RGB display in a true sense, each pixel can display all colors, and the display details are better. On the other hand, each first sub-pixel is surrounded by the second sub-pixel and the third sub-pixel, thereby preventing color cast. In addition, the opening area of the second sub-pixel is larger than that of the first sub-pixel and the third sub-pixel, which can reduce the display color cast caused by different decay rates of organic light emitting materials emitting different colors of light.

[0010] In an embodiment, two first sub-pixels located on a diagonal line are spaced apart from each other in a manner that the second sub-pixel and the third sub-pixel are located therebetween.

[0011] In an embodiment, a line connecting the centers of two first sub-pixels located on a diagonal passes through the second sub-pixel and the third sub-pixel located in a corresponding first virtual quadrangle.

[0012] In an embodiment, the pixel arrangement structure comprises a plurality of first virtual quadrangles arranged repeatedly, the first virtual quadrangles are arranged in rows along a first direction and arranged in columns along a second direction perpendicular to the first direction.

[0013] Any two adjacent first virtual quadrangles share a common virtual side.

[0014] In an embodiment, a minimum distance between two first sub-pixels adjacent along the first direction is a first distance X, a minimum distance between two first sub-pixels adjacent along the second direction is a second distance Y, the first distance X and the second distance Y satisfy the condition:

[0015] X = (0.8~1.2)Y.

[0016] In an embodiment, the first distance X and the second distance Y satisfy the condition: X = Y.

[0017] In an embodiment, the first sub-pixel, the second sub-pixel and the third sub-pixel have a polygonal shape.

[0018] In an embodiment, the first sub-pixel, the second sub-pixel and the third sub-pixel each have a quadrangular shape.

[0019] In an embodiment, the shape of the first sub-pixel is configured to be defined by a pixel side not parallel to the first direction and the second direction.

[0020] In an embodiment, any two adjacent first sub-pixels have two vertex angles opposite to each other.

[0021] In an embodiment, each of any two adjacent first sub-pixels is arranged symmetrically about the extension line of the line connecting the centers of the two first sub-pixels.

[0022] In an embodiment, each of the second sub-pixel and the third sub-pixel has a pixel side not parallel to the first direction and the second direction.

[0023] Wherein, the pixel sides of the second sub-pixel and the third sub-pixel not parallel to the first direction and the second direction are opposite to each other and adjacent to a pixel side of the adjacent first sub-pixel.

[0024] In an embodiment, the second sub-pixel and the third sub-pixel have a non-equilateral quadrangular shape.

[0025] In the second direction, each of the second sub-pixel and the third sub-pixel has a first pixel edge and a second pixel edge opposite to each other along the second direction; the length of the first pixel edge of the same sub-pixel is greater than the length of the second pixel edge;

[0026] In the same first virtual quadrilateral, the two first pixel edges of the second sub-pixel and the third sub-pixel are adjacent to and parallel to each other; in the second direction, the two second pixel edges of the two adjacent first virtual quadrilaterals are adjacent to and parallel to each other.

[0027] In an embodiment, in the first direction, the second pixel edge of the second sub-pixel has a first length L1;

[0028] In the first direction, the maximum width of the first sub-pixel is a second length L2;

[0029] Wherein, L2=(1.5~2.5)L1.

[0030] In an embodiment, each of the second sub-pixel and the third sub-pixel located in the same first virtual quadrilateral is symmetrically arranged about the extension line of the connecting line of the centers of the two.

[0031] In an embodiment, in the same first virtual quadrilateral, the spacing between the two first pixel edges of the second sub-pixel and the third sub-pixel is a fourth length, and in the second direction, the spacing between the two second pixel edges of the adjacent second sub-pixel and the third sub-pixel in the two adjacent first virtual quadrilaterals is a fifth length;

[0032] Wherein, the fourth length is equal to the fifth length.

[0033] In an embodiment, two second sub-pixels adjacent along the first direction have two top corners opposite to each other;

[0034] The part of the two edges of each of the two top corners opposite to each other extending to the vertex of the top corner is formed as a straight line segment so that the top corner is flatly chamfered; wherein the straight line segment is obliquely arranged relative to the first direction.

[0035] In an embodiment, two second sub-pixels adjacent along the first direction have two top corners opposite to each other;

[0036] The part of the two edges of each of the two top corners opposite to each other extending to the vertex of the top corner is formed as an arc line segment so that the top corner is circularly chamfered; wherein the tangent line of the arc line segment is obliquely arranged relative to the first direction.

[0037] In an embodiment, the second sub-pixel has a pixel edge along the first direction and a vertex opposite to the pixel edge in the second direction;

[0038] The part of the two edges of the vertex extending to the vertex of the vertex is formed as a straight line segment so that the vertex is a flat chamfer; wherein the straight line segment is parallel to the first direction.

[0039] In an embodiment, the second sub-pixel has a pixel edge along the first direction and a vertex opposite to the pixel edge in the second direction;

[0040] The part of the two edges of the vertex extending to the vertex of the vertex is formed as an arc segment so that the vertex is a round chamfer; wherein the tangent of the arc segment is parallel to the first direction.

[0041] In an embodiment, at least one pixel edge of the first sub-pixel is configured to be concave to the center of the first sub-pixel.

[0042] In an embodiment, the pixel edge of the first sub-pixel concave to the center is a curve or a broken line.

[0043] In an embodiment, any four second sub-pixels of the four first virtual quadrilaterals adjacent in the first direction and the second direction have centers coinciding with the vertices of a second virtual quadrilateral;

[0044] The four third sub-pixels of the four first virtual quadrilaterals adjacent have centers coinciding with the vertices of a third virtual quadrilateral;

[0045] The area of the second virtual quadrilateral is equal to the area of the first virtual quadrilateral.

[0046] In an embodiment, the first virtual quadrilateral, the second virtual quadrilateral and the third virtual quadrilateral are equilateral quadrilaterals with equal side lengths.

[0047] In an embodiment, the first sub-pixel has a green light emitting color, the second sub-pixel has a blue light emitting color, and the third sub-pixel has a red light emitting color.

[0048] In an embodiment, the line connecting the centers of the second sub-pixel and the third sub-pixel in the first virtual quadrilateral passes through the center of the first virtual quadrilateral.

[0049] According to another aspect of the present application, a display panel is provided, comprising the pixel arrangement structure as described in the above embodiments.

[0050] According to still another aspect of the present application, a display device is provided, comprising the display panel as described in the above embodiments. Attached Figure Description

[0051] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0052] Figure 1 This is a schematic diagram of the pixel arrangement structure in one embodiment of the prior art;

[0053] Figure 2 For use in making Figure 1 A schematic diagram of the structure of the mask plate with the pixel arrangement structure described above;

[0054] Figure 3 This is a schematic diagram of the pixel arrangement structure in another embodiment of the prior art;

[0055] Figure 4 This is a schematic diagram of the pixel arrangement structure in another embodiment of the prior art;

[0056] Figure 5 This is a plan view of a display panel according to one embodiment of this application;

[0057] Figure 6 This is a plan view of the display panel in another embodiment of this application;

[0058] Figure 7 This is a schematic cross-sectional view of the display panel in one embodiment of this application;

[0059] Figure 8 This is a schematic diagram of the pixel arrangement structure in one embodiment of this application;

[0060] Figure 9 This is a schematic diagram of the pixel arrangement structure in another embodiment of this application;

[0061] Figure 10 This is a schematic diagram of the pixel arrangement structure in another embodiment of this application. Detailed Implementation

[0062] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0063] It should be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the present application. The terms "comprises", "comprising", "includes", "including" and the like can be used herein to mean either "consisting of" or "consisting essentially of" or "including" the recited elements and equivalents thereof, as well as more than one of each recited elements.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "and / or" and "at least one of" includes any and all combinations of one or more of the associated listed items.

[0065] Any color of light in nature can be mixed by red, green and blue light in different proportions, and the saturation of the mixed color is determined by the proportion of the three aforementioned colors, and the brightness of the mixed color is the sum of the brightness of the three colors. Each cone cell of the human eye contains a kind of photosensitive pigment (red, green and blue), so they can perceive the corresponding color, therefore, by blending red, green and blue, the human eye can perceive any color change.

[0066] The sub-pixel in the display panel refers to the small grid that displays the image, and each small grid has a specific position and an assigned color value. The specific position is determined by the pixel arrangement, and the assigned color value is determined by the pixel circuit. When different colors need to be displayed, the three sub-pixels emit light with different brightnesses. Since the size of these small grids is very small, they will visually mix into the desired color. Therefore, the color and position of these small grids determine the appearance of the display image, i.e. the appearance that can be perceived by the human eye.

[0067] Among them, one dimension of evaluating display quality is display resolution, which refers to the precision of the display image, specifically, how many sub-pixels the display panel can display. For example, common resolutions are HD: 720*1280, FHD: 1080*1920, QHD: 1440*2560, UHD (2K\4K): 2160*3840. Taking FHD as an example, it means that there are 1080 R sub-pixels, 1080 G sub-pixels and 1080 B sub-pixels in one direction, and 1920 R sub-pixels, 1920 G sub-pixels and 1920 B sub-pixels in the other direction.

[0068] Another dimension for evaluating display quality is PPI (Pixels Per Inch), also known as pixel density, which represents the number of pixels per inch. For example, an FHD resolution display with a 5-foot screen has 441 PPI. Therefore, given a fixed display panel size, a higher resolution generally means a higher PPI.

[0069] Another dimension for evaluating display quality is the aperture ratio. Normally, when we view the display panel, we don't see any areas that aren't lit. However, upon closer inspection with a magnifying glass, we find many dark, unlit areas. Where do these dark areas go? They are covered by the light-emitting areas. In other words, the light emitted by the subpixels is evenly distributed to the non-light-emitting areas. The brightness of a subpixel is divided among the non-light-emitting areas, making the screen noticeably less bright, and the uniform brightness is lower than that of a single subpixel. Therefore, we need to increase the aperture ratio of the display panel, that is, reduce the area of ​​the aforementioned dark, unlight-emitting areas and increase the area of ​​the light-emitting areas to achieve better display quality. At the same time, increasing the aperture ratio also helps extend the lifespan of the subpixels.

[0070] In liquid crystal display (LCD) technology, the traditional Real-RGB pixel arrangement is most common, such as... Figure 1 As shown, the traditional Real-RGB pixel arrangement has a sub-pixel size ratio of 1:1:1. That is, it divides a square pixel into three equal parts and arranges them side by side, assigning each part a different color. This can form a colored pixel, achieving highly independent pixels. Each pixel can display all colors, resulting in better display of details.

[0071] However, for Organic Light-Emitting Diode (OLED) display technology, OLED display panels are current-driven, requiring pixel driving circuits to connect the sub-pixels of the OLED device and provide driving current to the OLED device to emit light. An OLED device includes at least an anode, a cathode, and an organic light-emitting material located between the anode and cathode. Taking a top-emitting OLED display panel as an example, due to the poor stability of the organic light-emitting material, it cannot be patterned using traditional etching processes. Instead, a vapor deposition process with a mask is used. The organic light-emitting material is placed in a vacuum environment and heated to evaporate or sublimate the organic material. A mask is placed between the cavity for evaporating the organic material and the display substrate to be deposited. The mask has openings corresponding to the areas to be deposited, while areas not to be deposited have no openings. The evaporated or sublimated organic material molecules adhere to the display substrate through the openings, thereby directly forming a patterned organic material layer. The mask used for depositing the luminescent material layers of each sub-pixel is called a fine metal mask (FMM). Due to the extremely high manufacturing difficulty of fine metal masks, especially with the increasing resolution of display products, the number of openings in the fine metal mask is very large, making manufacturing increasingly difficult and expensive. Furthermore, defects in the fine metal mask can lead to color mixing and other defects in organic electroluminescent displays. The more fine metal masks used, the more likely product defects will occur, thus reducing the product yield.

[0072] like Figure 2 As shown, in OLED display technology, using the traditional Real-RGB pixel arrangement, if the bridge between two sub-pixels is too small, there is a risk of breakage in the bridge between the two evaporation openings of the corresponding mask. Furthermore, the alignment area between the mask and the sub-pixel will shrink, potentially leading to defects such as missing or mixed colors. Increasing the width of the bridge requires reducing the size of the sub-pixels, affecting the aperture ratio of the OLED display and hindering the achievement of high resolution. Therefore, in OLED display technology, the traditional Real-RGB pixel arrangement results in a larger distance between sub-pixels, leading to a smaller aperture area for the same resolution. This not only affects the aperture ratio but also requires a larger driving current to meet the brightness requirements, thus shortening the lifespan of the display panel.

[0073] To this end, the prior art proposes an RGB-Pentil pixel arrangement which improves the traditional Real-RGB pixel arrangement. In each row of the sub-pixel row, the red sub-pixel, the green sub-pixel and the blue sub-pixel are arranged alternately, and the sub-pixels of each color are arranged in a column. Compared with the traditional Real-RGB pixel arrangement, the number of sub-pixels is reduced, the area of the red sub-pixel and the blue sub-pixel is increased, so that the visual brightness is higher under the same brightness, and the cost is lower (the number of sub-pixels is less). However, when displaying, for example, yellow, the display color segmentation area, the segmentation line will produce a jagged edge, at the same time, the column arrangement of the green sub-pixel is easy to cause color edges, and the number of sub-pixels is reduced, and the display details are not as good as the traditional Real-RGB.

[0074] Based on this, the prior art proposes another Real-RGB pixel arrangement, as shown in Figure 3 , which arranges the red sub-pixel and the green sub-pixel in a column, and arranges the blue sub-pixel in a column. But this kind of pixel arrangement, because the distance between the blue sub-pixels is too close, for low PPI display (for example, less than 300 PPI), it is easy to produce the phenomenon of non-uniform display of blue in the display panel, and display blue stripes, so that the display panel cannot realize uniform display effect, affecting the user experience, and going against the visual effect pursued by people.

[0075] The prior art proposes another Real-RGB pixel arrangement, as shown in Figure 4 , a repeating unit of red sub-pixel, green sub-pixel and blue sub-pixel is repeatedly arranged in the row direction, and the repeating units of adjacent rows are arranged staggered, so that the red sub-pixel, the green sub-pixel and the blue sub-pixel in each column are arranged alternately. However, this kind of pixel arrangement has a staggered green sub-pixel in the column direction, and when displaying, for example, yellow, the display color segmentation area, the segmentation line will produce a jagged edge.

[0076] To solve the above problems, the embodiments of the present application provide a pixel arrangement structure, a display panel and a display device, through a new Real-RGB pixel arrangement, not only each pixel can display all colors, the display details are better, and the opening rate is improved, at the same time, the display uniformity is improved, the display color cast and the jaggy feeling are improved. In addition, the pixel arrangement in the embodiments of the present application will not appear display stripes in low PPI display (for example, less than 300 PPI), and the display quality is better.

[0077] It should be pointed out that those skilled in the art should know that, based on the pixel arrangement structure of the present application, each sub-pixel should be as evenly distributed as possible.

[0078] Figure 5 A plan view of a display panel in an embodiment of the present application is shown.Figure 6 A plan view of a display panel in another embodiment of the present application is shown.

[0079] Referring to Figure 5 and Figure 6 , the display panel in at least one embodiment of the present application includes a display area 12 and a non-display area 14, the display area 12 displays images by arranging a plurality of sub-pixels of the display area 12. Specifically, the display area 12 can be rectangular, and the non-display area 14 is arranged around the display area 12; of course, the shapes and arrangements of the display area 12 and the non-display area 14 include but are not limited to the above examples, for example, when the display panel is used in a wearable device worn on a user, the display area 12 can have a circular shape like a watch; when the display panel is used for display on a vehicle, the display area 12 and the non-display area 14 can adopt, for example, a circular shape, a polygonal shape, or other shapes. The display area 12 is provided with a plurality of sub-pixels for emitting light of different colors.

[0080] Figure 7 A cross-sectional view of a display panel in an embodiment of the present application is shown. Figure 8 An arrangement view of a pixel arrangement structure in an embodiment of the present application is shown.

[0081] Referring to Figure 7 and Figure 8 , the pixel arrangement structure 20 in at least one embodiment of the present application includes a plurality of first sub-pixels 22, a plurality of second sub-pixels 24, and a plurality of third sub-pixels 26.

[0082] A sub-pixel is characterized as the smallest unit for emitting light (for example, the smallest addressable unit of the display panel). For example, the display panel can be an OLED display panel, and the sub-pixel at least includes an anode 30 and a cathode 50, and a light-emitting unit 40 between the anode 30 and the cathode 50. A driving circuit applies a voltage between the anode 30 and the cathode 50 to excite the migration of carriers, which acts on an organic light-emitting layer in the light-emitting unit 40, thereby emitting light of different colors. It can be understood that the light-emitting unit 40 in the present application can specifically include an electron injection layer, an electron transport layer, an organic light-emitting layer, a hole transport layer, a hole injection layer, etc. stacked, wherein the electron injection layer, the electron transport layer, the hole transport layer, and the hole injection layer can be an integral layer structure formed by using a common metal mask (CMM). For example, the electron injection layer is an example, that is, the electron injection layers of a plurality of sub-pixels are connected to each other and collectively constitute a continuous integral layer structure, and the organic light-emitting layer is a patterned layer structure corresponding to each sub-pixel, that is, a film layer formed by using an FMM mask.

[0083] The plurality of first sub-pixels 22 are arranged apart from each other and have centers coinciding with the vertices of the first virtual quadrilateral M. For example, as shown inFigure 8 In the pixel arrangement shown, the first sub-pixels 22 are arranged in rows along a first direction and arranged in columns along a second direction perpendicular to the first direction, and the center lines of four adjacent first sub-pixels 22 form a first virtual quadrilateral M in the shape of a rectangle. Among them, the first sub-pixel 22 can have a polygonal shape, for example, in some embodiments, the first sub-pixel 22 can have the same quadrilateral shape (such as a square or a rhombus), and of course, in other embodiments, the first sub-pixel 22 can have one or more of a variety of polygonal shapes such as pentagon, hexagon, heptagon, etc.

[0084] The second sub-pixel 24 is located within the first virtual quadrilateral M and is spaced apart from the first sub-pixel 22, and the third sub-pixel 26 is also located within the first virtual quadrilateral M and is spaced apart from the first sub-pixel 22 and the second sub-pixel 24. That is, the first virtual quadrilateral M formed by the four first sub-pixels 22 surrounds one second sub-pixel 24 and one third sub-pixel 26, which are spaced apart from the four first sub-pixels 22 and from each other. Among them, the second sub-pixel 24 and the third sub-pixel 26 can each have a polygonal shape, for example, in some embodiments, the second sub-pixel 24 and the third sub-pixel 26 can have the same quadrilateral shape (such as a square or a rhombus) as the first sub-pixel 22, and of course, in other embodiments, the second sub-pixel 24 and the third sub-pixel 26 can have one or more of a variety of polygonal shapes such as pentagon, hexagon, heptagon, etc. Figure 8 In the pixel arrangement structure 20 shown, the second sub-pixel 24 and the third sub-pixel 26 have a different quadrilateral shape from the first sub-pixel 22.

[0085] It should be noted that in order to ensure that the sub-pixels can be uniformly distributed, as a preferred embodiment, the first sub-pixel 22 can have a center coinciding with the vertex of the first virtual quadrilateral M. In other embodiments, the center of the sub-pixel can also have a deviation within an error range from the vertex of the first virtual quadrilateral M. Therefore, the indication in this application that the vertex of the sub-pixel coincides with the vertex of the virtual quadrilateral should not be understood as requiring 100% coincidence of the center of the first sub-pixel 22 with the center of the first virtual quadrilateral M, which limits the scope of protection.

[0086] It can be understood that in some embodiments, the shape of the sub-pixel is regular, and the center of the sub-pixel can be the geometric center of the sub-pixel pattern, at which time the center of the light-emitting color of the sub-pixel coincides with the geometric center of the sub-pixel pattern. In other embodiments, due to the influence of the shape design of the sub-pixel, the center of the light-emitting color of the sub-pixel does not coincide with the geometric center of the sub-pixel pattern, at which time the center of the sub-pixel can also be the center of the light-emitting color of the sub-pixel, which is not limited herein.

[0087] In some embodiments of the present application, the first sub-pixel 22, the second sub-pixel 24 and the third sub-pixel 26 can be one of a red sub-pixel, a blue sub-pixel and a green sub-pixel respectively. Of course, in some other embodiments, the first sub-pixel 22, the second sub-pixel 24 and the third sub-pixel 26 can also be sub-pixels emitting light of other colors, such as white or yellow, which are not limited herein.

[0088] It should be understood that different colors of light have different wavelengths, and the higher the wavelength means the higher the energy of the light. The light with high energy is easy to cause the degradation of the organic light emitting material, so that the sub-pixel emitting the light with high energy is more likely to be attenuated. As is known, the wavelength of blue light is shorter than that of red light and green light, so the energy of blue light is higher, and the organic light emitting material emitting blue light is more likely to degrade, resulting in that the light emitted by the pixel unit is easy to be reddish, causing the color deviation of white light. Moreover, the light emitted by each sub-pixel is repeatedly reflected and reflected between the anode 30 and the cathode 50 through the microcavity effect, and the light is amplified and constructively interfered, so that the brightness of the light is increased, and the color deviation is further amplified. In some embodiments of the present application, the second sub-pixel 24 has a larger opening area than the first sub-pixel 22 and the third sub-pixel 26, that is, the second sub-pixel 24 can be set as a sub-pixel emitting blue light, and the first sub-pixel 22 and the third sub-pixel 26 are set as sub-pixels emitting green light and red light. In this way, the display defect caused by the different degradation rates of the organic light emitting materials emitting different colors of light can be reduced to a certain extent.

[0089] As a preferred embodiment, the first sub-pixel 22 can be set as a sub-pixel emitting green light, the second sub-pixel 24 can be set as a sub-pixel emitting blue light, and the third sub-pixel 26 can be set as a sub-pixel emitting red light. In this way, on the one hand, a real RGB display can be realized, and the arrangement of each sub-pixel can be more compact, and the opening rate of each sub-pixel can be improved; on the other hand, each green sub-pixel is surrounded by blue sub-pixels and red sub-pixels, thereby preventing color deviation. For example, when red light, green light and blue light are mixed to form white light, the red light, the green light and the blue light can be mixed in a ratio of about 30%, 60% and 10% respectively. Compared with other arrangement modes, setting the first sub-pixel 22 as a green sub-pixel can make the color mixing more uniform, and can preferably improve the color deviation.

[0090] In some embodiments of the present application, the pixel arrangement structure 20 includes a plurality of first virtual quadrilaterals M arranged repeatedly, and the plurality of first virtual quadrilaterals M are arranged in an array in a manner of sharing virtual edges. Specifically, as shown in FIG. 2, the pixel arrangement structure 20 includes a plurality of first virtual quadrilaterals M arranged repeatedly, and the plurality of first virtual quadrilaterals M are arranged in an array in a manner of sharing virtual edges. Figure 8In the shown embodiment, the first virtual quadrilaterals M are arranged in rows along a first direction and in columns along a second direction perpendicular to the first direction, and any two adjacent first virtual quadrilaterals M share a common virtual side. In this way, the sub-pixels can be arranged compactly, making full use of the space and improving the aperture ratio.

[0091] It can be understood that the array arrangement of the plurality of first virtual quadrilaterals M means that the centers of the plurality of first virtual quadrilaterals M are staggered in at least two directions to form an array. For example, the plurality of first virtual quadrilaterals M can be staggered in a first direction and a second direction perpendicular to each other to form an array. In this embodiment, the rows and columns of the first virtual quadrilaterals M arranged in the display panel are relative, and the first virtual quadrilaterals M arranged in rows can be the first virtual quadrilaterals M arranged in columns in other embodiments.

[0092] As an embodiment, the first virtual quadrilaterals M can be rectangular, i.e., the first sub-pixels 22 are arranged in rows along a first direction and in columns along a second direction. In this way, when the first sub-pixels 22 are set as green sub-pixels with higher sensitivity to the human eye, the first sub-pixels 22 can be arranged in a straight line in the first direction and the second direction, i.e., the centers of the plurality of first sub-pixels 22 arranged in rows along the first direction are located on the same straight line, and the centers of the plurality of first sub-pixels 22 arranged in columns along the second direction are located on the same straight line, so that the pixel arrangement structure 20 in the embodiment is more uniform in vision.

[0093] Further, the second sub-pixels 24 in the first virtual quadrilaterals M can also be arranged in a straight line along the first direction, i.e., the centers of the plurality of second sub-pixels 24 arranged in rows along the first direction are located on the same straight line. Similarly, the third sub-pixels 26 are also arranged in a straight line along the first direction, i.e., the centers of the plurality of third sub-pixels 26 arranged in rows along the first direction are located on the same straight line. In this way, on the one hand, in the first direction, the second sub-pixels 24 and the third sub-pixels 26 can form a straight line arrangement with better consistency, cooperating with the first sub-pixels 22 arranged in a straight line, so that the pixel arrangement structure 20 is more uniform in the first direction and the second direction; on the other hand, it also makes the white points formed in the pixel arrangement structure 20 more uniform, thereby improving the display quality.

[0094] In some embodiments, two first sub-pixels 22 located on a diagonal line are spaced apart from each other in a manner that a second sub-pixel 24 and a third sub-pixel 26 are located therebetween. Preferably, a line connecting the centers of the two first sub-pixels 22 located on the diagonal line passes through the second sub-pixel 24 and the third sub-pixel 26 located within the corresponding first virtual quadrilateral M. In this way, on the one hand, the second sub-pixel 24 and the third sub-pixel 26 can be reasonably arranged within the first virtual quadrilateral M, so as to strike a balance between the arrangement density of the sub-pixels and the spacing between the sub-pixels, and make the arrangement position and spacing of the second sub-pixel 24 and the third sub-pixel 26 relative to the first sub-pixel 22 more compact and uniform, so as to make the color mixing more uniform, and further improve the color cast. On the other hand, it is beneficial to improve the color mixing uniformity of the second sub-pixel 24 and the third sub-pixel 26 with the first sub-pixel 22, and further prevent color cast.

[0095] It should be understood that the pixel arrangement structure 20 directly determines the display effect. In order to ensure uniform display, the sub-pixels are usually arranged in a certain rule and as uniformly as possible along the row direction and the column direction. However, due to the characteristics of the organic light-emitting materials emitting light of different colors, color cast still cannot be avoided. As an optional implementation, the line connecting the centers of the second sub-pixel 24 and the third sub-pixel 26 located within the first virtual quadrilateral M passes through the center of the first virtual quadrilateral M. In this way, while ensuring the uniform arrangement of the sub-pixels as much as possible, the second sub-pixel 24 and the third sub-pixel 26 can be alternately arranged in the first direction or the second direction, so as to reduce the risk of color cast caused by accumulation of a single color, and thus improve the picture quality.

[0096] In some embodiments, the four second sub-pixels 24 in any four first virtual quadrilaterals M adjacent to each other along the first direction and the second direction have centers coinciding with the vertices of a second virtual quadrilateral (not labeled in the figure), and the four third sub-pixels 26 in the any four first virtual quadrilaterals M adjacent to each other have centers coinciding with the vertices of a third virtual quadrilateral. The area of the second virtual quadrilateral is equal to the area of the first virtual quadrilateral. As an optional implementation, the first virtual quadrilateral M, the second virtual quadrilateral, and the third virtual quadrilateral are all equilateral quadrilaterals, and the first virtual quadrilateral M, the second virtual quadrilateral, and the third virtual quadrilateral have equal side lengths.

[0097] In this way, the pixel arrangement structure 20 can be further made to have more uniform pixel arrangement in the first direction and the second direction, so as to improve the display quality.

[0098] Reference should be made to Figure 7The display panel in the embodiments of the present application can further include a pixel definition layer 60, which defines a plurality of pixel openings. The organic light-emitting layer of the sub-pixel is arranged in the pixel opening to avoid color mixing or interference between adjacent sub-pixels. Therefore, the pixel edge of the sub-pixel is the boundary of the pixel opening of the pixel definition layer 60, the area of the sub-pixel opening is the opening area of the pixel opening, which is also the light-emitting area of the sub-pixel, and the spacing between the sub-pixels is the spacing between the pixel edges of the sub-pixels. In addition, due to the current evaporation technology, in order to ensure that the light-emitting material is completely evaporated in the pixel opening, the opening area of the mask is usually larger than the area of the pixel opening to leave an evaporation allowance. For example, the spacing between each pixel edge of the sub-pixel and the profile boundary of the projection of the evaporation opening of the mask on the display substrate is the evaporation allowance. Preferably, the profile boundary of the projection of the evaporation opening of the mask on the display substrate and the pixel edge of the corresponding sub-pixel should be kept parallel to each other and have equal vertical distance. In this way, the final arrangement of the sub-pixels can be more uniform and regular, thereby effectively improving the manufacturing precision and yield of the light-emitting layer of the sub-pixel and reducing the risk of wrinkles when the mask is stretched.

[0099] It can be understood that, in order to achieve a higher PPI, the arrangement of the sub-pixels should be more compact. Therefore, in some embodiments, under the condition of meeting the limit process, the spacing between the adjacent pixel edges of two adjacent sub-pixels is equal to the sum of the evaporation allowances of the two adjacent sub-pixels. That is, under the condition of meeting the limit process, the profile boundaries of the projections of the evaporation openings of the masks corresponding to the two adjacent sub-pixels on the display substrate have an overlapping part, which is the separation line between the two adjacent sub-pixels. Of course, in other embodiments, the arrangement of some sub-pixels can be looser than the arrangement meeting the limit process condition, that is, the spacing between the pixel edges of two adjacent sub-pixels is greater than the sum of the evaporation allowances of the two adjacent sub-pixels. At this time, the profile boundaries of the projections of the evaporation openings of the masks corresponding to the two adjacent sub-pixels on the display substrate are spaced apart from each other. As an optional implementation, the adjacent pixel edges of the two adjacent sub-pixels are parallel to each other. At this time, the separation line between the two adjacent sub-pixels is the perpendicular bisector of the perpendicular lines of the adjacent pixel edges of the two adjacent sub-pixels.

[0100] In some embodiments, the minimum spacing between two first sub-pixels 22 adjacent in the first direction is a first spacing X, and the minimum spacing between two first sub-pixels 22 adjacent in the second direction is a second spacing Y. The first spacing X and the second spacing Y satisfy the condition: X = (0.8-1.2)Y. For example, as shown in FIG. 2, the minimum spacing between two first sub-pixels 22 adjacent in the first direction is a first spacing X, and the minimum spacing between two first sub-pixels 22 adjacent in the second direction is a second spacing Y. The first spacing X and the second spacing Y satisfy the condition: X = (0.8-1.2)Y. Figure 8In the illustrated embodiment, the first sub-pixel 22 has a quadrilateral shape, the shape of the first sub-pixel 22 is configured to be defined by pixel edges that are not parallel to the first direction and the second direction, i.e. each pixel edge of each first sub-pixel 22 can be arranged at an angle to the first direction and at an angle to the second direction. The minimum distance between two first sub-pixels 22 adjacent along the first direction is the distance between the vertices of the two corners of the two adjacent first sub-pixels 22. Similarly, the minimum distance between two first sub-pixels 22 adjacent along the second direction is the distance between the vertices of the two corners of the two adjacent first sub-pixels 22. In this way, the first sub-pixel 22 can be arranged as a green sub-pixel, which has a higher sensitivity to the human eye, and the distance of the first sub-pixel 22 in the first direction and the second direction is similar, further making the pixel arrangement structure 20 in the embodiment of the application more uniform in vision.

[0101] As a preferred implementation, the first distance X and the second distance Y satisfy the condition: X=Y. Specifically, as Figure 8 In the illustrated embodiment, the first virtual quadrilateral M is a square.

[0102] It is particularly emphasized that, with reference to Figure 7 and Figure 8 , the pixel definition layer 60 defines a pixel opening for arranging the organic light-emitting layer, when the ambient light source is incident on the edge 62 of the pixel opening at a certain angle, the ambient light is diffusely reflected, at this time, the diffusely reflected light can be perceived by a user viewing the display panel at a certain angle, which will reduce the ambient contrast of the display panel. The shape of the first sub-pixel 22 is configured to be defined by pixel edges that are not parallel to the first direction and the second direction, so that the ambient light from the outside is diffusely reflected by the pixel opening edge 62 that is not parallel to the first direction and the second direction, thereby changing the direction of the diffusely reflected scattered light. In the case of changing the direction, the scattered light cannot be perceived by the user, and the diffusely reflected scattered light is prevented from mixing with the spontaneous light from the organic light-emitting layer of the sub-pixel, thereby enhancing the ambient contrast.

[0103] Similarly, in some embodiments, the shape of the second sub-pixel 24 and the third sub-pixel 26 can also be configured to have pixel edges that are not parallel to the first direction and the second direction, which can also prevent the diffusely reflected scattered light from mixing with the spontaneous light from the organic light-emitting layer of the sub-pixel, thereby enhancing the ambient contrast.

[0104] In some embodiments, any two adjacent first sub-pixels 22 have two opposing apex angles. It should be understood that while minimizing the amount of diffusely reflected light that may enter the user's field of view, the fabrication and meshing difficulty of the fine metal mask must also be considered. The inventors of this application have discovered that during the fabrication of a display panel, for example, when stretching the mask along a first direction, the mask will shrink inward along a non-stretching direction (e.g., a second direction). During mask stretching, the stretching force causes the angles on the pixel openings corresponding to the opposing apex angles along the stretching force direction (e.g., the first direction) to change in the direction of increasing angle. The angles on the pixel openings corresponding to the opposing apex angles along the stretching force direction can guide the shrinkage to a certain extent, preventing wrinkles in the mask during stretching, which would cause changes in the pixel opening position, changes in the position of the vapor-deposited sub-pixels, and color mixing with other sub-pixels. Simultaneously, the angles on the vapor-deposited openings corresponding to another set of apex angles of the sub-pixels along the non-stretching direction (e.g., the second direction) can also counteract the shrinkage, further preventing wrinkles in the mask during stretching. Furthermore, since the set of apex corners opposite each first sub-pixel 22 protrudes outward in a direction away from the center of the sub-pixel, when stretched, the vertex of the corner corresponding to the set of apex corners in the pixel opening tends to move towards the center of the neighboring pixel opening. The two cancel each other out, which can reduce the shape and position changes of the pixel opening and further avoid color mixing.

[0105] In a preferred embodiment, each of any two adjacent first sub-pixels 22 is symmetrically arranged about the extension of the line connecting their centers. Specifically, as shown below... Figure 8 In the illustrated embodiment, in the first direction, the extension of the line connecting the centers of two adjacent first sub-pixels 22 passes through the vertices of the aforementioned first apex α and second apex β; in the second direction, the extension of the line connecting the centers of two adjacent first sub-pixels 22 passes through the vertices of another set of opposite apex angles of the first sub-pixels 22. This ensures that the vapor deposition openings in the mask are subjected to uniform stress during mask stretching, preventing uneven stress from causing significant deformation of the pixel openings and affecting the vapor deposition of the organic light-emitting layer of the sub-pixels. Simultaneously, it allows for a more regular shape of the sub-pixels, facilitating uniform sub-pixel arrangement and improving display quality.

[0106] In addition, generally the geometric center of a sub-pixel is the visual center of the sub-pixel, and the shape of the first sub-pixel 22 is configured to be defined by the pixel edges that are not parallel to the first direction and the second direction, and two adjacent first sub-pixels 22 are arranged symmetrically about the extension line of the center line of the two first sub-pixels 22, so that the width of the first sub-pixel 22 in the first direction and the second direction changes regularly and uniformly, and the distance between the visual centers of two adjacent first sub-pixels 22 is within a reasonable range, the human eye can accurately distinguish two adjacent sub-pixels with the same color, the visual resolution of the display panel is the same as the physical resolution, the lines in the display image of the display panel are fine and clear, and the display panel has good display effect.

[0107] It can also be understood that the size of the evaporation opening of the mask plate used in the evaporation process corresponds to the size of the organic light-emitting functional layer, and when the top angle of the first sub-pixel 22 is too small, the corresponding angle size in the evaporation opening of the mask plate is small, the preparation difficulty of the mask plate is large, and when the evaporation process is used to form a patterned film layer structure with a small top angle, a small process error will cause a large change in the above-mentioned top angle, and therefore, the top angle of the first sub-pixel 22 is too small, which increases the preparation difficulty of the display panel. As an implementation manner, when the top angle of the first sub-pixel 22 is within 80°-100°, the preparation difficulty of the mask plate for preparing the organic light-emitting layer in the first sub-pixel 22 is small, and the preparation process difficulty of the display panel is low.

[0108] It should be noted that in the foregoing embodiment, the top angle of the first sub-pixel 22 is within 80°-100°, which can also reduce the edge sawtooth of the display image and improve the quality of the display image.

[0109] In addition, in the pixel arrangement structure 20, each sub-pixel should be arranged compactly and uniformly, and the opening area and the opening rate of different sub-pixels should be considered. When the top angle of the first sub-pixel 22 is within 80°-100°, and the angles of the second sub-pixel 24 and the third sub-pixel 26 near the top angle are obtuse, the shape of the second sub-pixel 24 and the third sub-pixel 26 is complementary to at least part of the shape of the two first sub-pixels 22, so that the space of the display panel can be effectively utilized, the area of the vacant area between adjacent sub-pixels is reduced, and the opening rate of the display panel is increased.

[0110] It should be understood that, when the shape of the first sub-pixel 22 is configured to be defined by the pixel edges that are not parallel to the first direction and the second direction, in order to effectively utilize the space of the display panel, the area of the empty region between adjacent sub-pixels is reduced, and the aperture ratio of the display panel is increased. In some embodiments, each of the second sub-pixel 24 and the third sub-pixel 26 has a pixel edge that is not parallel to the first direction and the second direction. Among them, the pixel edges of the second sub-pixel 24 and the third sub-pixel 26 that are not parallel to the first direction and the second direction are opposite to each other with respect to an adjacent pixel edge of the adjacent first sub-pixel 22. For example, as shown in Figure 8 the second sub-pixel 24 and the third sub-pixel 26 each have a pixel edge that is adjacent to and opposite to the pixel edge corresponding to the adjacent first sub-pixel 22, and the pixel edge is also configured to be not parallel to the first direction and the second direction, that is, to be arranged at an angle with respect to the first direction and the second direction.

[0111] In some embodiments, the second sub-pixel 24 and the third sub-pixel 26 are arranged to have a non-equilateral quadrilateral shape. In the second direction, each of the second sub-pixel 24 and the third sub-pixel 26 has a first pixel edge (not labeled in the figure) and a second pixel edge (not labeled in the figure) opposite to each other, and the length of the first pixel edge of the same sub-pixel is greater than that of the second pixel edge. In the same first virtual quadrilateral M, the two first pixel edges of the second sub-pixel 24 and the third sub-pixel 26 are adjacent to and parallel to each other, and the two second pixel edges in the second direction of the two adjacent first virtual quadrilaterals M are adjacent to and parallel to each other. Each of the second sub-pixel 24 and the third sub-pixel 26 also has a third pixel edge and a fourth pixel edge connected between the first pixel edge and the second pixel edge thereof, and the third pixel edge and the fourth pixel edge are arranged at an angle with respect to the first direction and the second direction. Further, the first pixel edge and the second pixel edge of the second sub-pixel 24 and the third sub-pixel 26 are parallel to the first direction. In this way, not only the aperture area of the second sub-pixel 24 and the third sub-pixel 26 is ensured to obtain a higher resolution under the condition that the size of the display panel is the same, but also the risk of evaporation color mixing between sub-pixels of different colors is reduced. Under the foregoing condition constraints, the limit process conditions are met, so that the aperture ratio of each sub-pixel in the pixel arrangement structure 20 is maximized.

[0112] In some embodiments, the second pixel edge of the second sub-pixel 24 has a first length L1, and the maximum width of the first sub-pixel 22 in the first direction is a second length L2, where L2=(1.5~2.5)L1. It is easy to understand that, since the shape of the first sub-pixel 22 is configured to be defined by the pixel edges that are not parallel to the first direction and the second direction, the width of the first sub-pixel 22 in the first direction is not constant along the second direction, but varies regularly. For example, as shown in Figure 8In the shown embodiment, in the first direction, the line passing through the vertices of the first top corner and the second top corner opposite to each other of the first sub-pixel 22 passes through the center of the first sub-pixel 22; in the second direction, the line passing through the vertices of another set of top corners opposite to each other of the first sub-pixel 22 also passes through the center of the first sub-pixel 22. Then the width of the first sub-pixel 22 in the first direction gradually increases first and then gradually decreases along the second direction, and the maximum width of the first sub-pixel 22 in the first direction is the distance between the line passing through the vertices of the first top corner and the second top corner opposite to each other of the first sub-pixel 22.

[0113] It can be understood that, due to the limitations of process technology and cost, it is usually selected to stretch the fine metal mask plate in the longitudinal direction, and the evaporation opening extends in the longitudinal direction (for example, the first direction), so as to ensure better evaporation effect. Considering the opening rate of the sub-pixel, display uniformity, and the difficulty of manufacturing the mask plate, the shape, the size in the transverse direction, and the size in the longitudinal direction of the evaporation opening have a correlation relationship. Correspondingly, the shape, the size in the transverse direction, and the size in the longitudinal direction of the sub-pixel also have a corresponding correlation relationship. Therefore, the maximum width of the first sub-pixel 22 in the first direction will limit the shape and size of the first sub-pixel 22, and in order to make the shape of the second sub-pixel 24 and the third sub-pixel 26 at least complementary to the shape of the two first sub-pixels 22, so as to reduce the area of the empty area between the adjacent sub-pixels and increase the opening rate of the display panel, it is also necessary to uniformly limit the distance between the second sub-pixel 24 and the third sub-pixel 26 and the adjacent first sub-pixel 22. At this time, when the display panel area, resolution, PPI, and opening rate and other parameters are fixed, the length of the second pixel side of the second sub-pixel 24 and the third sub-pixel 26 will affect the shape and area size of the second sub-pixel 24 and the third sub-pixel 26.

[0114] And setting L2 as (1.5~2.5)L1 makes the shape and size of each sub-pixel more reasonable, which is beneficial to the uniform arrangement of the sub-pixels on one hand, improves the display quality, on the other hand, reduces the stretching difficulty of the mask plate, and on the other hand, under the condition of limiting process, the opening rate of each sub-pixel in the pixel arrangement structure 20 is maximized.

[0115] Correspondingly, the second pixel side of the third sub-pixel 26 has a third length, and L2 is (1.5~2.5) times the third length.

[0116] In some embodiments, the length of the first pixel side of the second sub-pixel 24 is greater than the length of the first pixel side of the third sub-pixel 26, and the length of the second pixel side of the second sub-pixel 24 is greater than the length of the second pixel side of the third sub-pixel 26. In this way, the opening area of the second sub-pixel 24 has a larger opening area than the first sub-pixel 22 and the third sub-pixel 26.

[0117] As an optional implementation, as shown in FIG. 4,Figure 8 As shown, each of the second sub-pixel 24 and the third sub-pixel 26 located in the same first virtual quadrilateral M is symmetrically arranged with respect to the extension line of the center connecting line of the two. In this way, the shape of the sub-pixel can be ensured to be more regular, which is conducive to the uniform arrangement of the sub-pixel, thereby improving the display uniformity.

[0118] As another alternative implementation, as shown in FIG. 6, in the same first virtual quadrilateral M, the interval between the two first pixel edges of the second sub-pixel 24 and the third sub-pixel 26 is a fourth length, and the interval between the two second pixel edges of the adjacent second sub-pixel 24 and the third sub-pixel 26 in the two adjacent first virtual quadrilaterals M in the second direction is a fifth length. Wherein, the fourth length is equal to the fifth length, so as to be conducive to the uniform arrangement of the sub-pixel, thereby improving the display uniformity. Figure 8

[0119] Figure 9 The arrangement schematic diagram of the pixel arrangement structure in another embodiment of the present application.

[0120] Referring to FIG. 6, Figure 9 In some embodiments, in the second direction, the second sub-pixel 24 has a pixel edge arranged along the first direction and an acute angle θ opposite to the pixel edge, and the part of the two edges of the acute angle θ extending to the vertex of the acute angle θ is formed as a straight line segment so that the acute angle θ is flatly chamfered; wherein the straight line segment is parallel to the first direction. In other embodiments, the part of the two edges of the acute angle θ extending to the vertex of the acute angle θ is formed as an arc segment so that the acute angle θ is circularly chamfered; wherein the tangent line of the arc segment is parallel to the first direction. In this way, on the one hand, forming flat chamfer and circular chamfer can reduce the preparation difficulty of the mask plate and the evaporation difficulty of the evaporation process, and on the other hand, the interval H between the two second sub-pixels in the two adjacent first virtual quadrilaterals M in the second direction is increased, which further reduces the preparation difficulty of the mask plate and the evaporation difficulty of the evaporation process.

[0121] In some embodiments, the two second sub-pixels 24 adjacent in the first direction have two acute angles opposite to each other, for example, specifically to FIG. 6, Figure 9 ​In the shown embodiment, two second sub-pixels 24 adjacent in the first direction have a third vertex angle γ and a fourth vertex angle δ opposite to each other. The part where the two edges of each of the two opposite vertex angles (the third vertex angle γ and the fourth vertex angle δ) extend to meet at the vertex of the vertex angle is formed as a straight line segment so that the vertex angle is flatly chamfered. The straight line segment is arranged obliquely to the first direction. In this way, the gap between the organic light-emitting layers of the two second sub-pixels 24 adjacent in the first direction can be increased, the risk of color mixing at the vertex angle of the organic light-emitting layer can be effectively improved, and the pixel arrangement structure is easy to manufacture. At the same time, the distance V between any second sub-pixel and the second sub-pixel 24 adjacent in the first direction, and the distance H between the any second sub-pixel and the other second sub-pixel 24 in the first virtual quadrangle M adjacent in the second direction tend to be close to each other, so that the arrangement of the sub-pixels is more uniform, and the display effect is improved.

[0122] In other embodiments, the part where the two edges of each of the two opposite vertex angles (the third vertex angle γ and the fourth vertex angle δ) extend to meet at the vertex of the vertex angle can also be formed as an arc segment so that the vertex angle is roundly chamfered. The tangent of the arc segment is arranged obliquely to the first direction. In this way, the gap between the organic light-emitting layers of the two second sub-pixels 24 adjacent in the first direction can be increased, the risk of color mixing at the vertex angle of the organic light-emitting layer can be effectively improved, and the pixel arrangement structure is easy to manufacture.

[0123] In addition, the "roundly chamfered" in the present application refers to the angle formed by the chamfered corner of a polygon, and the "flatly chamfered" refers to the angle formed after the arc segment of the roundly chamfered corner is replaced by a straight line segment.

[0124] It is also emphasized here that the sawtooth effect of the edge region of the display region 12 is also a factor affecting the display quality. The inventors of the present application have found that the sub-pixels on different rows form a stepped shape along the extension direction of the edge region, so that the sawtooth effect of the image at the edge region is increased when the display panel displays the image, which affects the display effect of the display panel. Therefore, the shape of the first sub-pixel 22 is configured to be limited by the pixel edge that is not parallel to the first direction and the second direction, and the second sub-pixel 24 and the third sub-pixel 26 have a pixel edge that is not parallel to the first direction and the second direction, so that the line connecting the pixel edges of the plurality of sub-pixels located at the edge of the display region 12, especially the irregular edge, tends to coincide with or be parallel to the tangent of the irregular edge, so that the line connecting the pixel edges of the plurality of sub-pixels is smoother and closer to the shape of the irregular edge, thereby reducing the sawtooth effect of the image at the irregular edge, and improving the display effect of the display panel.

[0125] Figure 10 An arrangement schematic diagram of the pixel arrangement structure in another embodiment of the present application.

[0126] Reference is made toFigure 10 In some embodiments, at least one pixel edge 222 of the first sub-pixel 22 is configured to be concave to the center of the first sub-pixel 22. In this way, the first sub-pixel 22, the second sub-pixel 24 and the third sub-pixel 26 can be closely arranged under the same process condition, and the spacing between adjacent sub-pixels can be reduced as much as possible. Moreover, the shape of the first sub-pixel 22 is set to be a concave polygon or a concave pattern composed of a curve, and the spacing between the first sub-pixel 22 and the adjacent second sub-pixel 24 and third sub-pixel 26 can be further reduced, so that the opening area of the sub-pixel can be increased under the condition of the same resolution, the aperture ratio is improved, the driving current of the sub-pixel is reduced, and the life of the display panel is increased.

[0127] As an implementation, the pixel edge 222 of the first sub-pixel 22 concave to the center thereof is a curve or a broken line. It can be understood that due to the limitation of evaporation process, the fewer the corners on the edge of the sub-pixel, that is, the more the edge is in an arc line, the less stress is likely to be accumulated during evaporation, and thus evaporation is more likely to occur. Therefore, as a preferred implementation, the pixel edge 222 of the first sub-pixel 22 concave to the center thereof is a curve, for example, in the embodiment shown in FIG. 2, the pixel edge 222 of the first sub-pixel 22 concave to the center thereof is a circular arc. Figure 10

[0128] In some embodiments, the ratio of the maximum distance to the minimum distance between the pixel edges of the first sub-pixel 22 opposite to the adjacent second sub-pixel 24 or third sub-pixel 26 ranges from 1 to 1.5, and specifically, for example, can be 1.1, 1.2, 1.3 or 1.4. In this way, the spacing between adjacent sub-pixels is as uniform as possible, and the uniformity of display is improved.

[0129] Based on the same inventive concept, as shown in Figure 5 and Figure 6 The present application also provides a display device 100, which comprises the display panel in the above-mentioned embodiments.

[0130] Specifically, the display device 100 can be applied in the fields of mobile phone terminals, bionic electronics, electronic skin, wearable devices, vehicle-mounted devices, Internet of Things devices and artificial intelligence devices, etc. For example, the display device 100 described above can be a mobile phone, a tablet, a palm computer, an iPod, a smart watch, etc.

[0131] In the case of using “comprising”, “having”, and “including” in the description herein, another component can be added unless a specific limiting term is used, such as “only”, “consisting of”, etc. Unless otherwise mentioned, the singular form of the term can include the plural form, and cannot be understood as one in number.

[0132] ​Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0133] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A pixel arrangement structure, characterized by, The pixel arrangement structure comprises: a first sub-pixel having a center coinciding with a vertex of a first virtual quadrangle; a second sub-pixel located within the first virtual quadrangle and spaced apart from the first sub-pixel; and a third sub-pixel located within the first virtual quadrangle and spaced apart from the first sub-pixel and the second sub-pixel; wherein the second sub-pixel has a larger opening area than the first sub-pixel and the third sub-pixel; two first sub-pixels located on a diagonal line are spaced apart from each other in such a manner that the second sub-pixel and the third sub-pixel are located therebetween; a line connecting the centers of the two first sub-pixels located on the diagonal line passes through the second sub-pixel and the third sub-pixel located within the corresponding first virtual quadrangle; the pixel arrangement structure comprises a plurality of first virtual quadrangles arranged repeatedly, the first virtual quadrangles are arranged in rows along a first direction and arranged in columns along a second direction perpendicular to the first direction; each of the second sub-pixel and the third sub-pixel has a pixel edge non-parallel to the first direction and the second direction; wherein the pixel edges of the second sub-pixel and the third sub-pixel non-parallel to the first direction and the second direction are opposite to each other relative to an adjacent pixel edge of the adjacent first sub-pixel; the second sub-pixel and the third sub-pixel have a non-equilateral quadrangular shape; each of the second sub-pixel and the third sub-pixel has a first pixel edge and a second pixel edge opposite to each other along the second direction; the first pixel edge of the same sub-pixel has a length greater than that of the second pixel edge; in the same first virtual quadrangle, the two first pixel edges of the second sub-pixel and the third sub-pixel are adjacent to and parallel to each other; in the second direction, the two second pixel edges of two adjacent first virtual quadrangles are adjacent to and parallel to each other. Any two adjacent first virtual quadrangles share a common virtual edge.

2. The pixel arrangement structure of claim 1, wherein, The minimum distance between two first sub-pixels adjacent in the first direction is a first distance X, and the minimum distance between two first sub-pixels adjacent in the second direction is a second distance Y, the first distance X and the second distance Y satisfy the condition:

3. The pixel arrangement of claim 2, wherein, X=(0.8~1.2)Y. The first distance X and the second distance Y satisfy the condition: X=Y.

4. The pixel arrangement structure of claim 3, wherein, The first sub-pixel, the second sub-pixel and the third sub-pixel have a polygonal shape.

5. The pixel arrangement of claim 2, wherein, The first sub-pixel, the second sub-pixel and the third sub-pixel all have a quadrangular shape.

6. The pixel arrangement of claim 5, wherein, The shape of the first sub-pixel is configured as a polygon defined by pixel edges non-parallel to the first direction and the second direction.

7. The pixel arrangement structure of claim 5, wherein, Any two adjacent first sub-pixels have two vertex angles opposite to each other.

8. The pixel arrangement structure of claim 7, wherein, Each of any two adjacent first sub-pixels is arranged symmetrically about the extension line of the line connecting the centers of the two first sub-pixels.

9. The pixel arrangement structure of claim 7, wherein, In the first direction, the second pixel edge of the second sub-pixel has a first length L1; 10. The pixel arrangement of claim 1, wherein, In the first direction, the maximum width of the first sub-pixel is a second length L2; wherein L2=(1.5~2.5)L1. ​ 11. The pixel arrangement of claim 1, wherein, Each of the second and third sub-pixels located in the same first virtual quadrangle is symmetrically arranged with respect to the extension line of the connecting line of the centers of the two.

12. The pixel arrangement of claim 1, wherein, Two second sub-pixels adjacent in the first direction have two opposite corners with respect to each other; The part of the two edges of each of the two opposite corners with respect to each other, which extend to the vertex of the corner, is formed as a straight line segment so that the corner is flatly chamfered; wherein the straight line segment is obliquely arranged with respect to the first direction; or The part of the two edges of each of the two opposite corners with respect to each other, which extend to the vertex of the corner, is formed as an arc line segment so that the corner is circularly chamfered; wherein the tangent line of the arc line segment is obliquely arranged with respect to the first direction.

13. The pixel arrangement of claim 1, wherein, In the second direction, the second sub-pixel has a pixel edge arranged in the first direction and a corner opposite to the pixel edge; The part of the two edges of each of the two opposite corners with respect to each other, which extend to the vertex of the corner, is formed as a straight line segment so that the corner is flatly chamfered; wherein the straight line segment is parallel to the first direction; or The part of the two edges of each of the two opposite corners with respect to each other, which extend to the vertex of the corner, is formed as an arc line segment so that the corner is circularly chamfered; wherein the tangent line of the arc line segment is parallel to the first direction.

14. The pixel arrangement of any of claims 1-13, wherein: At least one pixel edge of the first sub-pixel is configured to be concave to the center of the first sub-pixel.

15. The pixel arrangement of claim 14, wherein, The pixel edge of the first sub-pixel concave to the center thereof is a curved line or a broken line.

16. The pixel arrangement of any of claims 1-13, wherein: Four second sub-pixels in any four first virtual quadrangles adjacent in the first direction and the second direction have centers coinciding with the vertices of a second virtual quadrangle; Four third sub-pixels in the any four first virtual quadrangles have centers coinciding with the vertices of a third virtual quadrangle; The area of the second virtual quadrangle is equal to the area of the first virtual quadrangle.

17. The pixel arrangement of claim 16, wherein, The first virtual quadrangle, the second virtual quadrangle and the third virtual quadrangle are equilateral quadrangles with equal side lengths.

18. The pixel arrangement of any of claims 1-13, wherein: The first sub-pixel has a green light-emitting color, the second sub-pixel has a blue light-emitting color, and the third sub-pixel has a red light-emitting color.

19. The pixel arrangement of any of claims 1-13, wherein: The connecting line of the centers of the second sub-pixel and the third sub-pixel located in the first virtual quadrangle passes through the center of the first virtual quadrangle.

20. A display panel comprising: The display panel comprises the pixel arrangement structure according to any one of claims 1-19.

21. A display device comprising: The display panel comprises the pixel arrangement structure according to claim 20.

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