Display panel and display device

Abstract

The present invention discloses a display panel and a display device to improve the display effect of the display panel. The display panel in the embodiment of the present invention includes a display area and a non-display area surrounding the display area, the display area includes a first display area and a second display area arranged along the edge of the display area, the first display area includes a plurality of first sub-pixels arranged in an array, and the second display area includes a plurality of second sub-pixels arranged in an array, wherein: the pixel area of ​​the first sub-pixel is smaller than the pixel area of ​​the second sub-pixel of the same color, and the pixel areas of the second sub-pixels of different colors are different.

Description

[0001] This application is a divisional application with the application date of October 19, 2017, application number 201710978708.8, and the name of the invention being “A display panel and a display device”. Technical Field

[0002] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] OLED display panels have been listed as the next generation display technology with great development prospects due to their many advantages, including thinness, lightness, wide viewing angle, active luminescence, continuously adjustable luminous color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and flexible display.

[0004] With the development of OLED technology, display devices are gradually tending to have narrow borders or even no borders. From the perspective of aesthetics and product quality, the shape of the display panel is no longer limited to regular shapes such as rectangles, or in special application scenarios, the display panel is also not limited to regular shapes such as rectangles. Special-shaped display panels are gradually appearing in people's field of vision. For example, the four corners of the display panel are rounded, or a groove structure is set on the display panel to install devices such as earpieces and cameras, or a circular or other shaped display panel is designed.

[0005] Since the edge of the special-shaped display panel is a special-shaped structure, the sub-pixels cannot cover the entire display area, so that the sub-pixels form a stepped structure near the edge of the display panel. When the user uses the above display panel, it is easy to produce a jagged feeling at the special-shaped edge of the display area, making the display image quality at the edge of the display panel poor. In the prior art, the edge atomization method is used to weaken the jagged feeling of the edge of the display panel by designing the algorithm of the driving chip. This method can improve the problem of jagged feeling to a certain extent, but the effect is not good, and the color saturation of the display panel near the special-shaped edge is poor, and the display effect is poor. Summary of the invention

[0006] The purpose of the embodiments of the present invention is to provide a display panel and a display device to weaken the jagged feeling of the edge of the special-shaped display panel and improve the display effect of the display panel.

[0007] The display panel provided by the embodiment of the present invention includes a display area and a non-display area surrounding the display area, the display area includes a first display area and a second display area arranged along the edge of the display area, the first display area includes a plurality of first sub-pixels arranged in an array, and the second display area includes a plurality of second sub-pixels arranged in an array, wherein:

[0008] The pixel area of ​​the first sub-pixel is smaller than the pixel area of ​​the second sub-pixel of the same color.

[0009] In the embodiment of the present invention, the pixel area of ​​the first sub-pixel in the first display area is relatively small, which can improve the display effect of the display panel.

[0010] An embodiment of the present invention further provides a display device, which includes the display panel in any of the above technical solutions.

[0011] The display panel of the display device has a smaller pixel area of ​​the sub-pixel near the irregular edge of the display area, so that a better display effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a partial structure of a display panel according to an embodiment of the present invention;

[0013] Figure 2 A schematic diagram of a partial structure of a display panel in the prior art;

[0014] Figure 3 It is a schematic diagram of a partial structure of a display panel according to another embodiment of the present invention;

[0015] Figure 4 A schematic diagram of a partial structure of a display panel according to another embodiment of the present invention;

[0016] Figure 5 A schematic diagram of a partial structure of a display panel according to another embodiment of the present invention;

[0017] Figure 6 It is a schematic diagram of a first metal oxide semiconductor (MOS) transistor according to an embodiment of the present invention;

[0018] Figure 7 is a schematic diagram of a second metal oxide semiconductor (MOS) transistor according to an embodiment of the present invention;

[0019] Figure 8 for Figure 5 A schematic diagram of a partial structure of a driving circuit in an embodiment of a display panel shown;

[0020] Fig. 9 for Figure 5 A schematic diagram of a partial structure of a driving circuit in another embodiment of the display panel shown;

[0021] Fig.10 FIG. 1 is a schematic diagram of the structure of a display device in an embodiment of the present invention.

[0022] Reference numerals:

[0023] Prior art section:

[0024] 01-display area;

[0025] 011-sub-pixel;

[0026] Part of the present invention:

[0027] 1- Display area;

[0028] 11- first display area;

[0029] 111-first sub-pixel;

[0030] 12- second display area;

[0031] 121- second sub-pixel;

[0032] 13- First direction;

[0033] 14- Second direction;

[0034] 15-a first driving circuit;

[0035] 16- a second driving circuit;

[0036] 100-display device;

[0037] 200-Display panel. DETAILED DESCRIPTION

[0038] In order to reduce the jagged feeling of the irregular edge of the display panel and improve the display effect of the display panel, the embodiment of the present invention provides a display panel and a display device. In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail with reference to the following embodiments.

[0039] like Figure 1 As shown, Figure 1 The figure is a partial structural diagram of a display panel according to an embodiment of the present invention. The display panel provided by the embodiment of the present invention includes a display area 1 and a non-display area (not shown in the figure) surrounding the display area 1, the display area 1 includes a first display area 11 and a second display area 12 arranged along the edge of the display area 1, the first display area 11 includes a plurality of first sub-pixels 111 arranged in an array, and the second display area 12 includes a plurality of second sub-pixels 121 arranged in an array, wherein: the pixel area of ​​the first sub-pixel 111 is smaller than the pixel area of ​​the second sub-pixel 121 of the same color.

[0040] In the embodiment of the present invention, the pixel area of ​​the first sub-pixel 111 of the first display area 11 is relatively small, and more first sub-pixels 111 can be arranged in the first display area 11, so that the arrangement density of the first sub-pixels 111 in the first display area 11 is increased, the jagged feeling of the irregular edges of the display panel is weakened, and the display effect of the display panel is improved.

[0041] It is worth noting that in the drawings of the present application, the pixel areas of the second sub-pixels 121 of different colors are the same. However, in actual applications, considering factors such as color matching and service life, the pixel areas of the second sub-pixels 121 of different colors are likely to be different, which is not shown in the drawings.

[0042] like Figure 2 As shown, Figure 2 The schematic diagram of the partial structure of a display panel in the prior art. In the display panel in the prior art, when the edge of the display area 01 is an irregular edge, the area of ​​the sub-pixel 011 is consistent, resulting in obvious jagged edges in the edge area of ​​the display area 01, which will reduce the display effect of the display panel. This solution can reduce the jagged edges.

[0043] Please refer to Figure 3 , Figure 3 FIG. 1 is a partial structural diagram of a display panel according to another embodiment of the present invention. The pixel area of ​​the first sub-pixel 111 of the same color gradually decreases along the direction approaching the edge of the display area 1 .

[0044] In this embodiment, the closer to the edge of the display area 1, the smaller the pixel area of ​​the first sub-pixel 111 is, and the closer to the edge of the display area 1, the greater the arrangement density of the first sub-pixel 111 is, which is more conducive to weakening the jagged feeling of the irregular edge of the display area 1, thereby further improving the display effect.

[0045] Please refer to Figure 4 , Figure 4 FIG. 1 is a partial structural diagram of a display panel according to another embodiment of the present invention. The pixel area of ​​the first sub-pixel 111 is not greater than half of the pixel area of ​​the second sub-pixel 121 of the same color.

[0046] In this embodiment, the pixel area of ​​the first sub-pixel 111 is relatively small, and the area of ​​one second sub-pixel 121 can be used to arrange at least two first sub-pixels 111, which greatly improves the pixel density of the first display area 11 and helps to further weaken the jagged feeling of the irregular edges of the display area 1.

[0047] Please refer to Figure 5 , Figure 5 This is a partial structural diagram of a display panel according to another embodiment of the present invention. The second sub-pixel 121 includes a first side extending along the first direction 13 and a second side extending along the second direction 14, and the length of the first side is less than the length of the second side; the length of the side of the first sub-pixel 111 extending along the first direction 13 is equal to the length of the first side of the second sub-pixel 121 of the same color, and the length of the side of the first sub-pixel 111 extending along the second direction 14 is equal to half the length of the second side of the second sub-pixel 121 of the same color.

[0048] In this embodiment, along the first direction 13, the length of the side of the first sub-pixel 111 is the same as the length of the first side of the second sub-pixel 121 of the same color, and along the second direction 14, the length of the side of the first sub-pixel 111 is less than the length of the second side of the second sub-pixel 121 of the same color. When manufacturing the display panel in this embodiment, the layout of the sub-pixels of the display panel is relatively regular and the manufacturing process is relatively simple.

[0049] Please refer to Figure 6 and Figure 7 , Figure 6 It is a schematic diagram of a first metal oxide semiconductor (MOS) transistor according to an embodiment of the present invention; Figure 7 Schematic diagram of a second metal oxide semiconductor MOS transistor according to an embodiment of the present invention. The first sub-pixel 111 is connected to the first metal oxide semiconductor MOS transistor, and the second sub-pixel 121 is connected to the second metal oxide semiconductor MOS transistor; the width W of the source and drain channel of the first metal oxide semiconductor MOS transistor 1 and long L 1 The width W of the source and drain channel of the second metal oxide semiconductor MOS tube 2 and long L 2 satisfy: And, W 1 L 1 <W 2 L 2 .

[0050] In the embodiment of the present invention, the width-to-length ratio of the source-drain channel of the first metal oxide semiconductor MOS tube is smaller than the width-to-length ratio of the source-drain channel of the second metal oxide semiconductor MOS tube, and the area of ​​the source-drain channel of the first metal oxide semiconductor MOS tube is smaller than the area of ​​the source-drain channel of the second metal oxide semiconductor MOS tube. Reducing the width-to-length ratio of the source-drain channel of the first metal oxide semiconductor MOS tube can, on the one hand, reduce the light-emitting current, thereby reducing the display brightness of the irregular edge and weakening the sawtooth feeling; on the other hand, it can leave more area for the wiring, which is conducive to compressing the wiring, so that the wiring of the first display area 11 is arranged in the gaps of a few first sub-pixels 111, so that the remaining first sub-pixels 111 can be arranged more densely, thereby increasing the arrangement density of the first sub-pixels 111 in the first display area 11, thereby weakening the sawtooth feeling of the irregular edge of the display area.

[0051] In a preferred embodiment, the length L of the source-drain channel of the first metal oxide semiconductor MOS tube is 1 The length L of the source-drain channel of the second metal oxide semiconductor MOS tube 2 Satisfaction: L 1 =L 2 .

[0052] In this embodiment, L 1=L 2 , then W 1 <W 2 , which simplifies the process of making MOS tubes when making pixel circuits of display panels, and helps to simplify wiring layout.

[0053] In a preferred embodiment, the width W of the source-drain channel of the first metal oxide semiconductor MOS transistor is 1 and long L 1 Ratio It gradually decreases towards the edge of the profile.

[0054] In this embodiment, the closer to the edge of the display area 1, the smaller the width-to-length ratio of the source-drain channel of the first metal oxide semiconductor MOS tube is, and the more the light-emitting current can be weakened. The greater the degree of reducing the display brightness of the irregular edge, the weaker the sawtooth feeling; it is also more conducive to compressing the wiring and increasing the arrangement density of the first sub-pixel 111 in the first display area 11.

[0055] Please refer to Figure 5 and Figure 8 , Figure 8 for Figure 5 A schematic diagram of a local structure of a driving circuit in an embodiment of a display panel is shown. In a specific embodiment, each first sub-pixel 111 corresponds to a first driving circuit 15, each second sub-pixel 121 corresponds to a second driving circuit 16, and the area of ​​the first driving circuit 15 is smaller than the area of ​​the second driving circuit 16.

[0056] In this embodiment, the area of ​​the first driving circuit 15 is also relatively small, and can be arranged in the display area 1 as much as possible to reduce the area occupied by the non-display area 1 .

[0057] Please continue to refer to Figure 5 and Figure 8 In a specific embodiment, the area of ​​the first driving circuit 15 is equal to the pixel area of ​​the first sub-pixel 111. In this embodiment, the first driving circuit 15 and the first sub-pixel 111 have the same area, so that the first sub-pixel 111 and the first driving circuit 15 can be overlapped, and further, the first driving circuit 15 can be set in the first display area 11 without occupying the non-display area. For comparison, please refer to Figure 5 and Fig. 9 , Fig. 9 for Figure 5 A schematic diagram of a partial structure of a driving circuit in another embodiment of a display panel is shown. When the area of ​​the first driving circuit 15 is large, it needs to occupy more non-display area.

[0058] In an optional embodiment, the shape of the first sub-pixel 111 is not specifically limited, and may be a rectangular sub-pixel or a hexagonal sub-pixel. The shape of the second sub-pixel 121 is not specifically limited, and may be a rectangular sub-pixel or a hexagonal sub-pixel.

[0059] In a specific embodiment, the shape of the first sub-pixel 111 is the same as the shape of the second sub-pixel 121 , which facilitates the sub-pixel layout of the display panel and the manufacture of the display panel.

[0060] In a preferred embodiment, the first sub-pixel 111 includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the second sub-pixel 121 includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel.

[0061] In this embodiment, the first display area 11 includes red sub-pixels, green sub-pixels and blue sub-pixels, and the second display area 12 includes white sub-pixels in addition to red sub-pixels, green sub-pixels and blue sub-pixels. Therefore, the transmittance of the second display area 12 is better, while the transmittance of the first display area 11 is poor, so the display brightness of the irregular edge of the display panel is lower, which can further weaken the jagged feeling of the irregular edge of the display panel.

[0062] In a specific embodiment, the edge contour shape of the first display area 11 is not limited, and can be an arc or an oblique line. For example, the display area 1 of the display panel includes two sets of opposite side edges, and the two adjacent side edges are arc transitions, and the display panel is a rectangular shape with a rounded corner structure; or the display panel is a circle or an ellipse; or the display panel is a polygonal structure such as a triangle, a rhombus or a pentagon.

[0063] Please refer to Fig.10 An embodiment of the present invention further provides a display device 200, which includes the display panel 100 in any of the above technical solutions.

[0064] The display panel of the display device has a smaller pixel area of ​​sub-pixels near the irregular edge of the display area, so more sub-pixels can be arranged, increasing the number and density of pixel arrangements, making the jaggedness of the edge of the display area weaker and having a better display effect.

[0065] Optionally, in the embodiment of the present invention, the specific type of the display device is not limited, and may be a mobile phone, a monitor, a tablet computer or a television. Fig.10 The display device 100 shown in FIG. 1 is a mobile phone.

[0066] 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 display panel, It is characterized in that The device comprises a display area and a non-display area surrounding the display area, wherein the display area comprises a first display area and a second display area arranged along an edge of the display area, the first display area comprises a plurality of first sub-pixels arranged in an array, and the second display area comprises a plurality of second sub-pixels arranged in an array, wherein: The pixel area of ​​the first sub-pixel is smaller than the pixel area of ​​the second sub-pixel of the same color; The second sub-pixels of different colors have different pixel areas; The row arrangement of the multiple first sub-pixels in the first display area does not correspond one-to-one to the row arrangement of the multiple second sub-pixels in the second display area; and / or the column arrangement of the multiple first sub-pixels in the first display area does not correspond one-to-one to the column arrangement of the multiple second sub-pixels in the second display area.

2. The display panel according to claim 1, It is characterized in that The pixel area of ​​the first sub-pixels of the same color gradually decreases along a direction approaching an edge of the display area.

3. The display panel according to claim 1, It is characterized in that The pixel area of ​​the first sub-pixel is not greater than half of the pixel area of ​​the second sub-pixel of the same color.

4. The display panel according to claim 1, It is characterized in that The second sub-pixel comprises a first side extending along a first direction and a second side extending along a second direction, wherein the length of the first side is smaller than the length of the second side; The length of the side of the first subpixel extending along the first direction is equal to the length of the first side of the second subpixel of the same color, and the length of the side of the first subpixel extending along the second direction is equal to half the length of the second side of the second subpixel of the same color.

5. The display panel according to claim 1, It is characterized in that The first sub-pixel is connected to a first metal oxide semiconductor MOS tube, and the second sub-pixel is connected to a second metal oxide semiconductor MOS tube; the width W of the source and drain channel of the first metal oxide semiconductor MOS tube 1 and long L 1 The width W of the source and drain channel of the second metal oxide semiconductor MOS tube is 2 and long L 2 satisfy: Moreover, W 1 L 1 <W 2 L 2 .

6. The display panel according to claim 5, It is characterized in that The length L of the source-drain channel of the first metal oxide semiconductor MOS tube is 1 The length L of the source-drain channel of the second metal oxide semiconductor MOS tube 2 Satisfaction: L 1 =L 2 .

7. The display panel according to claim 5, It is characterized in that The width W of the source and drain channel of the first metal oxide semiconductor MOS tube is 1 and long L 1 Ratio The value gradually decreases in a direction away from the display area.

8. The display panel according to claim 1, It is characterized in that Each of the first sub-pixels corresponds to a first driving circuit, each of the second sub-pixels corresponds to a second driving circuit, and an area of ​​the first driving circuit is smaller than an area of ​​the second driving circuit.

9. The display panel according to claim 8, It is characterized in that The area of ​​the first driving circuit is equal to the pixel area of ​​the first sub-pixel.

10. The display panel according to claim 1, It is characterized in that The first sub-pixel includes a rectangular sub-pixel or a hexagonal sub-pixel.

11. The display panel according to claim 1, It is characterized in that The second sub-pixel includes a rectangular sub-pixel or a hexagonal sub-pixel.

12. The display panel according to claim 1, It is characterized in that The first sub-pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the second sub-pixels include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.

13. The display panel according to claim 1, It is characterized in that The arrangement density of the first sub-pixels in the first display area is greater than the arrangement density of the second sub-pixels in the second display area.

14. The display panel according to claim 1, It is characterized in that The display panel is an OLED display panel.

15. The display panel according to claim 1, It is characterized in that The wiring of the first display area is arranged in the gaps between a few of the first sub-pixels.

16. The display panel according to claim 1, It is characterized in that Each of the first sub-pixels corresponds to a first driving circuit, and the first driving circuit occupies the non-display area.

17. The display panel according to any one of claims 1 to 16, It is characterized in that The edge contour shape of the first display area includes an arc line or a slant line.

18. A display device, It is characterized in that It comprises the display panel as claimed in any one of claims 1 to 17.

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