A pixel arrangement structure and related device

Abstract

The present invention discloses a pixel arrangement structure and related devices, wherein in the pixel arrangement structure: the first sub-pixel is located at the center position and four vertex positions of a first virtual rectangle; the second sub-pixel is located at the center position of the side of the first virtual rectangle; the third sub-pixel is located in the second virtual rectangle, the third sub-pixel is in the shape of a long strip, the extension direction of the strip points to the first sub-pixel adjacent to the third sub-pixel, and the two ends of the strip are designed in an axisymmetric manner. The second virtual rectangle is formed by two second sub-pixels and two first sub-pixels located at the center positions of two adjacent sides of the first virtual rectangle. Compared with the existing pixel arrangement structure, this pixel arrangement method can make the sub-pixels closely arranged under the same process conditions, thereby increasing the area of ​​a single sub-pixel as much as possible while satisfying the minimum sub-pixel spacing, thereby reducing the driving current of the display device and increasing the life of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a pixel arrangement structure, an organic electroluminescent display panel, a high-precision metal mask and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) display devices are one of the hot topics in the field of flat panel display research today. Compared with liquid crystal displays, OLED display devices have the advantages of low energy consumption, low production cost, self-luminescence, wide viewing angle and fast response speed. At present, in the field of flat panel displays such as mobile phones, PDAs, digital cameras, OLED display devices have begun to replace traditional liquid crystal displays (LCD).

[0003] The structure of an OLED display device mainly includes: a substrate, and sub-pixels arranged in a matrix on the substrate. Each sub-pixel is generally formed by using organic materials through a high-precision metal mask plate using evaporation film forming technology to form an organic electroluminescent structure at the corresponding sub-pixel position on the array substrate.

[0004] However, in current OLED display devices, the sub-pixel opening area in the pixel arrangement structure is relatively small, so the driving current needs to be increased to meet the display brightness requirements. However, when OLED works under a large driving current, it is easy to cause the device to age faster, thereby shortening the life of the OLED display device. Summary of the invention

[0005] In view of this, embodiments of the present invention provide a pixel arrangement structure, an organic electroluminescent display panel, a high-precision metal mask and a display device to solve the problem of large distances between sub-pixels in existing OLED devices.

[0006] Therefore, an embodiment of the present invention provides a pixel arrangement structure, comprising: a first sub-pixel, a second sub-pixel and a third sub-pixel whose positions do not overlap with each other;

[0007] The first sub-pixel is located at the center position of the first virtual rectangle and at the four vertex positions of the first virtual rectangle;

[0008] The second sub-pixel is located at the center of the side of the first virtual rectangle;

[0009] The third sub-pixel is located in a second virtual rectangle, and the second virtual rectangle is formed by connecting two second sub-pixels located at the center positions of two adjacent side edges of the first virtual rectangle and the first sub-pixel adjacent to the two second sub-pixels and located at the center position of the first virtual rectangle and at a vertex position of the first virtual rectangle in sequence as vertex corners, and four second virtual rectangles constitute one first virtual rectangle;

[0010] The third sub-pixel is in the shape of a long strip, the extension direction of the long strip points to the first sub-pixel adjacent to the third sub-pixel, and the two ends of the long strip are designed to be axisymmetric.

[0011] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, the third sub-pixels in the four second virtual rectangles constituting the first virtual rectangle are distributed in an “X” shape.

[0012] Optionally, in the pixel arrangement structure provided in an embodiment of the present invention, the minimum distance between the third sub-pixel and the adjacent first sub-pixel relative side is greater than or equal to the process limit distance, and the minimum distance between the third sub-pixel and the adjacent second sub-pixel relative side is greater than or equal to the process limit distance.

[0013] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, the ratio of the maximum distance to the minimum distance between the sides of the third sub-pixel and the adjacent first sub-pixel opposite to each other is in the range of 1 to 1.5;

[0014] The ratio of the maximum distance to the minimum distance between the sides of the third sub-pixel and the adjacent second sub-pixel opposite to each other is in the range of 1 to 1.5;

[0015] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, the sides of the third sub-pixel and the adjacent first sub-pixel that are opposite to each other are parallel to each other;

[0016] Sides of the third sub-pixel and the second sub-pixel that are opposite to each other are parallel to each other.

[0017] Optionally, in the pixel arrangement structure provided by an embodiment of the present invention, the first sub-pixel is in a cross shape.

[0018] Optionally, in the pixel arrangement structure provided by an embodiment of the present invention, each internal angle of the first sub-pixel is greater than or equal to 90 degrees.

[0019] Optionally, in the pixel arrangement structure provided in an embodiment of the present invention, the “cross” shape is a shape formed by inward concavities in the middle of four sides of a square, and the four vertices of the square serve as four ends of the “cross” shape respectively.

[0020] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, the four top corners of the square are rounded.

[0021] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, both ends of the long strip are arc-shaped or polygonal.

[0022] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, the shape of the second sub-pixel is a rectangle; and / or

[0023] The first sub-pixel is in a rectangular shape.

[0024] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, the first sub-pixel is a red sub-pixel, the second sub-pixel is a blue sub-pixel, and the third sub-pixel is a green sub-pixel;

[0025] The area of ​​the blue sub-pixel is larger than the area of ​​the red sub-pixel and the area of ​​the green sub-pixel.

[0026] Optionally, in the pixel arrangement structure provided by an embodiment of the present invention, the third sub-pixel is located at an intersection of a line connecting two adjacent first sub-pixels and a line connecting two adjacent second sub-pixels.

[0027] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, the areas of the third sub-pixels are the same, and the shapes of the third sub-pixels are consistent; and / or

[0028] The areas of the first sub-pixels are the same, and the shapes of the first sub-pixels are consistent.

[0029] The second sub-pixels have the same area and the same shape.

[0030] Correspondingly, an embodiment of the present invention further provides an organic electroluminescent display panel, comprising a plurality of closely arranged pixel arrangement structures, wherein the pixel arrangement structure is any one of the above-mentioned pixel arrangement structures provided in the embodiment of the present invention; wherein adjacent first virtual rectangles are arranged in row and column directions with shared sides.

[0031] Correspondingly, an embodiment of the present invention further provides a display device, comprising the above-mentioned organic electroluminescent display panel provided by an embodiment of the present invention.

[0032] Correspondingly, an embodiment of the present invention also provides a high-precision metal mask template for producing the above-mentioned pixel arrangement structure provided by an embodiment of the present invention, wherein it includes: multiple opening areas, and the opening areas correspond to the shape and position of the first sub-pixel, the second sub-pixel or the third sub-pixel.

[0033] The beneficial effects of the embodiments of the present invention include:

[0034] The embodiment of the present invention provides a pixel arrangement structure, an organic electroluminescent display panel, a high-precision metal mask and a display device, wherein in the pixel arrangement structure: the first sub-pixel is located at the center position of the first virtual rectangle and at the four vertex positions of the first virtual rectangle; the second sub-pixel is located at the center position of the side of the first virtual rectangle; the third sub-pixel is located in the second virtual rectangle, and the second virtual rectangle is formed by connecting two second sub-pixels located at the center positions of two adjacent sides of the first virtual rectangle, and the first sub-pixel adjacent to the two second sub-pixels and located at the center position of the first virtual rectangle and a vertex position of the first virtual rectangle in sequence as the vertex, and the four second virtual rectangles constitute the first virtual rectangle. Compared with the existing pixel arrangement structure, this pixel arrangement method can make the first sub-pixel, the second sub-pixel and the third sub-pixel closely arranged under the same process conditions, so as to maximize the area of ​​a single sub-pixel while satisfying the minimum sub-pixel interval, thereby reducing the driving current of the display device and increasing the life of the display device. The third sub-pixel is arranged in a strip shape, which is conducive to increasing the area of ​​the second sub-pixel, so that the sub-pixel with lower luminous efficiency in the display panel can be set as the second sub-pixel. In addition, the two ends of the strip are symmetrically designed, which can reduce the pattern complexity of the evaporation mask plate and simplify the composition process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 One of the schematic diagrams of the pixel arrangement structure provided by an embodiment of the present invention;

[0036] Figure 2 A second schematic diagram of a pixel arrangement structure provided by an embodiment of the present invention;

[0037] Figure 3 A third schematic diagram of a pixel arrangement structure provided by an embodiment of the present invention;

[0038] Figure 4 A fourth schematic diagram of a pixel arrangement structure provided by an embodiment of the present invention;

[0039] Figure 5 A fifth schematic diagram of a pixel arrangement structure provided by an embodiment of the present invention;

[0040] Figure 6 A sixth schematic diagram of a pixel arrangement structure provided by an embodiment of the present invention;

[0041] Figure 7 A seventh schematic diagram of a pixel arrangement structure provided by an embodiment of the present invention;

[0042] Figure 8A schematic diagram of shape matching between the second sub-pixel and the third sub-pixel in the pixel arrangement structure provided by an embodiment of the present invention;

[0043] Fig. 9 A schematic structural diagram of an organic electroluminescent display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The shapes and sizes of the components in the drawings do not reflect the actual proportions, and are only intended to illustrate the contents of the present invention.

[0046] An embodiment of the present invention provides a pixel arrangement structure, such as Figure 1 As shown, it includes: a first sub-pixel 01, a second sub-pixel 02 and a third sub-pixel 03 whose positions do not overlap each other;

[0047] The first sub-pixel 01 is located at the center position of the first virtual rectangle and at the four vertex positions of the first virtual rectangle;

[0048] The second sub-pixel 02 is located at the center of the side of the first virtual rectangle;

[0049] The third sub-pixel 03 is located in the second virtual rectangle, and the second virtual rectangle is formed by connecting two second sub-pixels 02 located at the center positions of two adjacent side edges of the first virtual rectangle, and a first sub-pixel 01 adjacent to the two second sub-pixels 02 and located at the center position of the first virtual rectangle and at a vertex position of the first virtual rectangle in sequence as vertex corners, and the four second virtual rectangles constitute a first virtual rectangle;

[0050] The third sub-pixel 03 is in the shape of a long strip, and the extension direction of the strip points to the first sub-pixel 01 adjacent to the third sub-pixel 03, that is, the two ends of the strip respectively point to the third sub-pixel 03 at the two vertex positions of the second virtual rectangle where it is located, and the two ends of the strip are designed to be axially symmetrical.

[0051] Compared with the existing pixel arrangement structure, the pixel arrangement structure provided by the embodiment of the present invention can arrange the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03 closely under the same process conditions, so as to maximize the area of ​​a single sub-pixel while satisfying the minimum sub-pixel interval, thereby reducing the driving current of the display device and increasing the life of the display device. In addition, setting the third sub-pixel 03 in a strip shape is conducive to increasing the area of ​​the second sub-pixel 02, so that the sub-pixel with lower luminous efficiency in the display panel can be set as the second sub-pixel 02. In addition, the two ends of the strip are symmetrically designed, which can reduce the pattern complexity of the evaporation mask plate and simplify the composition process.

[0052] It should be noted that in the pixel arrangement structure provided in the embodiment of the present invention, the sub-pixel mentioned is located at a certain position, which refers to the position range of the sub-pixel, as long as the sub-pixel overlaps with the position. In specific implementation, the center of the sub-pixel can overlap with the position. Of course, the center of the sub-pixel can also not overlap with the position, that is, there is an offset between the two, which is not limited here. In addition, the center of the sub-pixel can be the geometric center of the sub-pixel graphic, or the center of the sub-pixel luminous color, which is not limited here.

[0053] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, in order to ensure that the sub-pixels are evenly distributed, the center of each sub-pixel is made as close to the corresponding position as possible.

[0054] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7 As shown, the third sub-pixels 03 in the four second virtual rectangles constituting the first virtual rectangle are distributed in an "X" shape, that is, the two ends of each third sub-pixel 02 point to the third sub-pixels 03 at the two vertex positions of the second virtual rectangle where it is located.

[0055] It should be noted that the first virtual rectangle mentioned in the display arrangement structure provided in the embodiment of the present invention is Figure 1 The largest dotted box in the image is Figure 1 Small and medium dashed boxes, in Figure 1 The first virtual rectangle includes four second virtual rectangles. The first virtual rectangle and the second virtual rectangle can be rectangles or squares, which is not limited here.

[0056] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, the first sub-pixel is a red sub-pixel, and the second sub-pixel is a blue sub-pixel; or, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel. Figure 2As shown, the green sub-pixel G located in the second virtual rectangle can form a light-emitting pixel point with the red sub-pixel R and the blue sub-pixel B located at any two adjacent corners of the second virtual rectangle.

[0057] Furthermore, since the luminous efficiency of the blue sub-pixel is relatively low and the life span is relatively short, therefore, optionally, in the pixel arrangement structure provided in the embodiment of the present invention, as Figure 2 As shown, the first sub-pixel 01 is a red sub-pixel R, the second sub-pixel 02 is a blue sub-pixel B, and the third sub-pixel 03 is a green sub-pixel G; the strip-shaped green sub-pixel G can expand the area of ​​the blue sub-pixel B in the direction of the green sub-pixel G, so that the area of ​​the blue sub-pixel B is larger than the area of ​​the red sub-pixel R and the area of ​​the green sub-pixel G, respectively.

[0058] Furthermore, in the pixel arrangement structure provided in the embodiment of the present invention, since the luminous efficiency of the green sub-pixel is generally higher, the area of ​​the green sub-pixel can be set to be smaller than the area of ​​the red sub-pixel. Of course, in a specific implementation, the area of ​​the green sub-pixel can also be the same as the area of ​​the red sub-pixel, which is not limited here.

[0059] Optionally, in the above-mentioned pixel arrangement structure provided in an embodiment of the present invention, the minimum distance between the side opposite to the third sub-pixel 03 and the adjacent first sub-pixel 01 needs to be greater than or equal to the process limit distance, and the minimum distance between the side opposite to the third sub-pixel 03 and the adjacent second sub-pixel 02 needs to be greater than or equal to the process limit distance to meet process requirements.

[0060] Optionally, in the above pixel arrangement structure provided by an embodiment of the present invention, the ratio of the maximum distance to the minimum distance between the sides of the third sub-pixel and the adjacent first sub-pixel opposite to each other is in the range of 1 to 1.5, such as 1.1, 1.2, 1.3, 1.4, etc.

[0061] Optionally, in the above pixel arrangement structure provided by an embodiment of the present invention, the ratio of the maximum distance to the minimum distance between the sides of the third sub-pixel and the adjacent second sub-pixel opposite to each other is in the range of 1 to 1.5, for example, 1.1, 1.2, 1.3, 1.4, etc.

[0062] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, in order to make the third sub-pixel 03 evenly distributed in the pixel arrangement structure, so as to reduce the spacing between the third sub-pixel 03 and the adjacent first sub-pixel 01, and to reduce the spacing between the third sub-pixel 03 and the adjacent second sub-pixel 02, as shown in FIG. Figures 2 to 7 As shown, the third sub-pixel 03 is located at the intersection of a line connecting two adjacent first sub-pixels 01 and a line connecting two adjacent second sub-pixels 02 , that is, located at the center of the second virtual rectangle.

[0063] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, in order to ensure that the gap width between the third sub-pixel 03 and the adjacent first sub-pixel 01 is consistent, so as to reduce the spacing between the third sub-pixel 03 and the adjacent first sub-pixel 01, as shown in FIG. Figures 1 to 7 As shown, the sides of the third sub-pixel 03 and the adjacent first sub-pixel 01 are parallel to each other. Of course, in specific implementations, the sides of the third sub-pixel 03 and the adjacent first sub-pixel 01 may not be parallel, which is not limited here.

[0064] It should be noted that in the pixel arrangement structure provided in the embodiment of the present invention, the shape of the sub-pixel refers to the shape of certain process fluctuations and errors. For high-resolution display panels, since the sub-pixel itself has a small area, in order to obtain a precise sub-pixel pattern, the pattern of the mask plate can be corrected or compensated by adopting methods commonly used in the field.

[0065] In a specific implementation, the larger the inner angle of the sub-pixel shape is, or the closer it is to an arc, the easier it is to achieve during evaporation. Therefore, optionally, in the pixel arrangement structure provided in an embodiment of the present invention, Figure 1 , Figures 3 to 5 As shown, both ends of the strip are arc-shaped; or Figures 6 to 8 As shown, both ends of the strip are polygonal, for example Figures 6 to 8 Of course, in the specific implementation, the shape of the strip can also be Figure 2 The rectangle shown is not limiting.

[0066] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 3 As shown, the shape of the first sub-pixel 01 is a rectangle, and of course it can also be other regular shapes or irregular shapes, which is not limited here.

[0067] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 4 to 8 As shown, the shape of the first sub-pixel 01 is a "cross". In this way, the first sub-pixel 01 and the third sub-pixel can be closely arranged, and color mixing can be avoided on the basis of ensuring the sub-pixel area.

[0068] Specifically, in the pixel arrangement structure provided by the embodiment of the present invention, Figure 8 As shown, the cross is formed by the concave middle of the four sides of the square, and the four corners of the square are respectively used as the four ends of the cross. The specific depth and shape of the concave match the two ends of the long strip of the third sub-pixel 03.

[0069] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 4 to 7As shown, each internal angle of the first sub-pixel 01 is greater than or equal to 90 degrees. The larger the internal angles of the first sub-pixel 01, the easier it is to achieve evaporation. On the contrary, if the internal angle of the sub-pixel is smaller, in order to prepare a sub-pixel shape with a smaller internal angle, it is necessary to compensate the pattern of the mask. Therefore, making the internal angle of the first sub-pixel 01 greater than or equal to 90 degrees can reduce the pattern complexity of the mask.

[0070] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figure 5 and Figure 7 As shown, the four vertices of the square are rounded, that is, the four ends of the "cross" are all rounded or arc-shaped.

[0071] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, in order to ensure that the gap width between the third sub-pixel 03 and the adjacent second sub-pixel 02 is consistent, so as to reduce the spacing between the third sub-pixel 03 and the adjacent second sub-pixel 02, as shown in FIG. Figures 1 to 7 As shown, the sides of the third sub-pixel 03 and the adjacent second sub-pixel 02 that are opposite to each other are parallel to each other.

[0072] Specifically, in the pixel arrangement structure provided in the embodiment of the present invention, since the third sub-pixel 03 is in the shape of a long strip, and the sides of the third sub-pixel 03 and the adjacent second sub-pixel 02 are parallel to each other, the side of the third sub-pixel 03 and the adjacent second sub-pixel 02 is set to be a straight line, which can simplify the pattern complexity of the mask as much as possible. Therefore, optionally, in the pixel arrangement structure provided in the embodiment of the present invention, if Figures 1 to 7 As shown, the shape of the second sub-pixel 02 is a rectangle.

[0073] Of course, in a specific implementation, the sides of the third sub-pixel 03 and the adjacent second sub-pixel 02 that are opposite to each other may not be parallel, which is not limited here.

[0074] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, the minimum distance between the third sub-pixel and the first sub-pixel is equal to the minimum distance between the third sub-pixel and the second sub-pixel.

[0075] In addition, the minimum spacing is generally the process limit distance, and the numerical range of the minimum spacing is generally related to the manufacturing process used. When a high-precision metal mask (FMM) is used in conjunction with an etching process to form a sub-pixel pattern, the minimum spacing is approximately 16μm. When a sub-pixel pattern is formed using processes such as laser or electroplating, the minimum spacing will be smaller.

[0076] Optionally, in the pixel arrangement structure provided by the embodiment of the present invention, the minimum spacing between any two adjacent first sub-pixels and second sub-pixels is equal.

[0077] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7 As shown, the areas of the third sub-pixels 03 are the same, thereby ensuring that in any luminous pixel point composed of the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03, the luminous areas of the third sub-pixels 03 are the same.

[0078] Of course, in a specific implementation, in the pixel arrangement structure provided in the embodiment of the present invention, the areas of at least two third sub-pixels may be different, which is not limited here.

[0079] In order to ensure that the mask pattern is consistent for the same seed pixel during preparation, thereby simplifying the patterning process, optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7 As shown, the shapes of the third sub-pixels 03 are consistent.

[0080] Of course, in a specific implementation, in the pixel arrangement structure provided in the embodiment of the present invention, the shapes of at least two third sub-pixels may be inconsistent, which is not limited here.

[0081] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7 As shown, the areas of the second sub-pixels 02 are the same, thereby ensuring that the light-emitting areas of the second sub-pixels 02 are the same in any light-emitting pixel point composed of the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03.

[0082] Of course, in a specific implementation, in the pixel arrangement structure provided in the embodiment of the present invention, the areas of at least two second sub-pixels may be different, which is not limited here.

[0083] In order to ensure that the mask pattern is consistent for the same seed pixel during preparation, thereby simplifying the patterning process, optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7 As shown, the shapes of the second sub-pixels 02 are consistent.

[0084] Of course, in a specific implementation, in the pixel arrangement structure provided in the embodiment of the present invention, the shapes of at least two second sub-pixels may be inconsistent, which is not limited here.

[0085] And, optionally, in the above-mentioned pixel arrangement structure provided by an embodiment of the present invention, in a first virtual rectangle, when the graphics of four second sub-pixels 02 are the same or similar, their arrangement angles can be the same, or their arrangement angles can be arbitrarily rotated, which is not limited here.

[0086] Optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7As shown, the areas of the first sub-pixels 01 are the same, thereby ensuring that the light-emitting areas of the first sub-pixels 01 are the same in any light-emitting pixel point composed of the first sub-pixel 01, the second sub-pixel 02 and the third sub-pixel 03.

[0087] Of course, in a specific implementation, in the pixel arrangement structure provided in the embodiment of the present invention, the areas of at least two first sub-pixels may be different, which is not limited here.

[0088] In order to ensure that the mask pattern is consistent for the same seed pixel during preparation, thereby simplifying the patterning process, optionally, in the pixel arrangement structure provided in the embodiment of the present invention, Figures 1 to 7 As shown, the shapes of the first sub-pixels 01 are consistent.

[0089] Of course, in a specific implementation, in the pixel arrangement structure provided in the embodiment of the present invention, the shapes of at least two first sub-pixels may be inconsistent, which is not limited here.

[0090] And, optionally, in the above-mentioned pixel arrangement structure provided by an embodiment of the present invention, in a first virtual rectangle, when the graphics of five first sub-pixels 01 are the same or similar, their arrangement angles can be the same, or their arrangement angles can be arbitrarily rotated, which is not limited here.

[0091] Optionally, the specific shapes, positional relationships, parallel and angular relationships, etc. of the second sub-pixel 02, the first sub-pixel 01 and the third sub-pixel 03 can be designed as needed. In actual processes, there may be some deviations due to limitations of process conditions or other factors. Therefore, as long as the shape, position and relative positional relationship of each sub-pixel roughly meet the above conditions, they all belong to the pixel arrangement structure provided in the embodiment of the present invention.

[0092] It should be noted that the inconsistent graphics of the sub-pixels mentioned in the embodiments of the present invention refer to the inconsistent shapes of the sub-pixels, for example, one is a circle and the other is a rectangle. Conversely, the consistent graphics of the sub-pixels mentioned in the embodiments of the present invention refer to the similar or identical shapes of the sub-pixels, for example, if the shapes of the two sub-pixels are both triangles, regardless of whether the areas are equal, the shapes of the two sub-pixels are considered to be consistent.

[0093] Based on the same inventive concept, an embodiment of the present invention further provides an organic electroluminescent display panel, such as Fig. 9 As shown, it includes a plurality of closely arranged pixel arrangement structures ( Fig. 9The pixel arrangement structure may be any of the above pixel arrangement structures provided by the present invention, and adjacent first virtual rectangles are arranged in the row direction and the column direction in a manner of sharing the side. That is, two adjacent pixel arrangement structures share the first sub-pixel 01 and the second sub-pixel 02 located on the side of the adjacent first virtual rectangle, for example Fig. 9 The three sub-pixels enclosed by each ellipse are sub-pixels shared by two adjacent pixel arrangement structures. Since the principle of solving the problem of the organic electroluminescent display panel is similar to that of the aforementioned pixel arrangement structure, the implementation of the organic electroluminescent display panel can refer to the implementation of the aforementioned pixel arrangement structure, and the repeated parts will not be repeated.

[0094] Specifically, the organic electroluminescent display panel provided by the embodiment of the present invention is as follows: Fig. 9 As shown, the first sub-pixels 01 and the second sub-pixels 02 are arranged alternately in the row direction, the first sub-pixels 01 and the second sub-pixels 02 are arranged alternately in the column direction, and the third sub-pixel 01 is located in a second virtual rectangle surrounded by two first sub-pixels 01 and two second sub-pixels 02. In this way, when displaying, any two adjacent first sub-pixels 01 and second sub-pixels 02 can form a luminous pixel point with a third sub-pixel 03 adjacent thereto, and the sub-pixels achieve a high-resolution display effect by using a low-resolution physical resolution through the principle of borrowing colors.

[0095] Based on the same inventive concept, an embodiment of the present invention further provides a display device, including any of the above-mentioned organic electroluminescent display panels provided in the embodiment of the present invention. The display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc. The implementation of the display device can refer to the above-mentioned embodiment of the display panel, and the repeated parts will not be repeated.

[0096] Based on the same inventive concept, an embodiment of the present invention further provides a high-precision metal mask for making any of the above-mentioned pixel arrangement structures provided in an embodiment of the present invention, and the high-precision metal mask includes: a plurality of opening areas, and the opening areas correspond to the shape and position of the first sub-pixel, the second sub-pixel or the third sub-pixel. Since the principle of solving the problem by the high-precision metal mask is similar to that of the above-mentioned pixel arrangement structure, the implementation of the high-precision metal mask can refer to the implementation of the above-mentioned pixel arrangement structure, and the repeated parts will not be repeated.

[0097] The above-mentioned pixel arrangement structure, organic electroluminescent display panel, high-precision metal mask and display device provided by the embodiment of the present invention, wherein in the pixel arrangement structure: the first sub-pixel is located at the center position of the first virtual rectangle and the four vertex positions of the first virtual rectangle; the second sub-pixel is located at the center position of the side of the first virtual rectangle; the third sub-pixel is located in the second virtual rectangle, and the second virtual rectangle is formed by connecting two of the second sub-pixels located at the center positions of two adjacent sides of the first virtual rectangle, and the first sub-pixel adjacent to the two second sub-pixels and located at the center position of the first virtual rectangle and a vertex position of the first virtual rectangle in sequence as the vertex, and the four second virtual rectangles constitute a first virtual rectangle. Compared with the existing pixel arrangement structure, this pixel arrangement method can make the first sub-pixel, the second sub-pixel and the third sub-pixel closely arranged under the same process conditions, so as to maximize the area of ​​a single sub-pixel while satisfying the minimum sub-pixel interval, thereby reducing the driving current of the display device and increasing the life of the display device. The third sub-pixel is arranged in a strip shape, which is conducive to increasing the area of ​​the second sub-pixel, so that the sub-pixel with lower luminous efficiency in the display panel can be set as the second sub-pixel. In addition, the two ends of the strip are symmetrically designed, which can reduce the pattern complexity of the evaporation mask plate and simplify the composition process.

[0098] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A pixel arrangement structure, characterized in that: include: A first sub-pixel, a second sub-pixel and a third sub-pixel whose positions do not overlap with each other; The first sub-pixel is located at the center of the first virtual rectangle and at the four vertex positions of the first virtual rectangle; the first sub-pixel is in a cross shape; the cross shape is a shape formed by concave middle portions of four sides of a square, and the four vertex corners of the square serve as four ends of the cross shape respectively; The second sub-pixel is located at the center of the side of the first virtual rectangle; The third sub-pixel is located in a second virtual rectangle, and the second virtual rectangle is formed by connecting two second sub-pixels located at the center positions of two adjacent side edges of the first virtual rectangle and the first sub-pixel adjacent to the two second sub-pixels and located at the center position of the first virtual rectangle and at a vertex position of the first virtual rectangle in sequence as vertex corners, and four second virtual rectangles constitute one first virtual rectangle; The third sub-pixel is in the shape of a long strip, the extension direction of the long strip points to the first sub-pixel adjacent to the third sub-pixel, and the two ends of the long strip are designed to be axisymmetric.

2. The pixel arrangement structure according to claim 1, characterized in that: The third sub-pixels in the four second virtual rectangles constituting the first virtual rectangle are distributed in an "X" shape; the third sub-pixel is located at the intersection of a line connecting two adjacent first sub-pixels and a line connecting two adjacent second sub-pixels.

3. The pixel arrangement structure according to claim 1, wherein: The minimum distance between the third subpixel and the adjacent first subpixel opposite side is greater than or equal to the process limit distance, and the minimum distance between the third subpixel and the adjacent second subpixel opposite side is greater than or equal to the process limit distance.

4. The pixel arrangement structure according to claim 3, characterized in that: The ratio of the maximum distance to the minimum distance between the sides of the third sub-pixel and the adjacent first sub-pixel opposite to each other is in the range of 1 to 1.5; The ratio of the maximum distance to the minimum distance between the sides of the third sub-pixel and the adjacent second sub-pixel opposite to each other is in the range of 1 to 1.

5.

5. The pixel arrangement structure according to claim 3, characterized in that: Sides of the third sub-pixel and the adjacent first sub-pixel that are opposite to each other are parallel to each other; Sides of the third sub-pixel and the second sub-pixel that are opposite to each other are parallel to each other.

6. The pixel arrangement structure according to claim 1, characterized in that: Each internal angle of the first sub-pixel is greater than or equal to 90 degrees.

7. The pixel arrangement structure according to claim 1, wherein: The four vertex corners of the square are rounded.

8. The pixel arrangement structure according to claim 1, characterized in that: Both ends of the strip are in arc shape or polygonal shape.

9. The pixel arrangement structure according to claim 1, characterized in that: The second sub-pixel is in a rectangular shape.

10. The pixel arrangement structure according to claim 1, wherein: The first sub-pixel is a red sub-pixel, the second sub-pixel is a blue sub-pixel, and the third sub-pixel is a green sub-pixel; The area of ​​the blue sub-pixel is larger than the area of ​​the red sub-pixel and the area of ​​the green sub-pixel.

11. The pixel arrangement structure according to claim 1, wherein: The areas of the third sub-pixels are the same, and the shapes of the third sub-pixels are consistent; and / or The areas of the first sub-pixels are the same, and the shapes of the first sub-pixels are consistent; and / or The second sub-pixels have the same area and the same shape.

12. An organic electroluminescent display panel, characterized in that: A pixel arrangement structure comprising a plurality of closely arranged pixel arrangements as claimed in any one of claims 1 to 11; wherein adjacent first virtual rectangles are arranged in row and column directions in a manner of sharing side edges.

13. A display device, characterized in that: Comprising the organic electroluminescent display panel as claimed in claim 12.

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