An OLED display panel and display device

Abstract

The present invention discloses an OLED display panel and a display device, wherein each pixel includes at least three sub-pixels of different colors, and each of the sub-pixels in the pixel is respectively connected to a corresponding data line; each adjacent N pixels arranged along the second direction is a pixel repeating unit, and since the N pixels in the pixel repeating unit share a common signal line; N is an integer greater than 1; therefore, the number of common signal lines in the entire display panel can be reduced, which is conducive to realizing a high PPI display panel. Moreover, for any two pixels arranged adjacently along the second direction, the signal lines on both sides of the sub-pixels of the same color in the two pixels are arranged symmetrically. In this way, it can be ensured that the distribution of the signal lines around the sub-pixels of the same color is consistent, that is, the layout of the sub-pixels of the same color is consistent, so that the sub-pixels of the same color are affected by the surrounding signal lines to the same extent, thereby ensuring the uniformity of the light emission of the sub-pixels of the same color.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to an OLED display panel 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] As OLED display panels become more mature, the demand for high pixel density (Pixels Per Inch, PPI) is becoming more and more widespread. Therefore, how to improve the PPI of OLED display panels is a technical problem that those skilled in the art need to solve urgently. Summary of the invention

[0004] Embodiments of the present invention provide an OLED display panel and a display device, which are used to improve the PPI of the display panel.

[0005] An OLED display panel provided by an embodiment of the present invention comprises a plurality of pixels arranged in a matrix, and a plurality of signal lines extending along a first direction and arranged along a second direction; wherein:

[0006] The plurality of signal lines include a plurality of data lines and a plurality of common signal lines;

[0007] Each of the pixels includes at least three sub-pixels of different colors, and each of the sub-pixels in the pixel is connected to a corresponding data line;

[0008] Each adjacent N pixels arranged along the second direction is a pixel repeating unit, and the N pixels in the pixel repeating unit share one common signal line; N is an integer greater than 1;

[0009] For any two pixels adjacently arranged along the second direction, the signal lines on both sides of sub-pixels of the same color in the two pixels are symmetrically arranged.

[0010] Optionally, in the OLED display panel provided by the embodiment of the present invention, N=2, and the plurality of common signal lines include a plurality of first common voltage lines;

[0011] In any one of the pixel repeating units, two of the pixels share one first common voltage line, and the shared first common voltage line is located between the two pixels;

[0012] In any of the pixel repeating units, the sub-pixels in two of the pixels are arranged symmetrically about the shared first common voltage line;

[0013] In any two pixels adjacent to each other along the second direction, the data lines connected to sub-pixels of the same color are symmetrically arranged.

[0014] Optionally, in the OLED display panel provided by an embodiment of the present invention, all sub-pixels in the pixel are arranged along the second direction.

[0015] Optionally, in the OLED display panel provided by an embodiment of the present invention, the data line connected to the sub-pixel is arranged adjacent to the sub-pixel.

[0016] Optionally, in the OLED display panel provided by an embodiment of the present invention, for a sub-pixel adjacent to the first common voltage line, a data line connected to the sub-pixel is located on a side of the sub-pixel away from the first common voltage line.

[0017] Optionally, in the OLED display panel provided by the embodiment of the present invention, the plurality of common signal lines further include a plurality of second common voltage lines;

[0018] One second common voltage line is disposed on both sides of each of the pixel repeating units, and only one second common voltage line is disposed between two adjacent pixel repeating units along the second direction;

[0019] The pixels located at both sides of the second common voltage line and adjacent to the second common voltage line share the second common voltage line.

[0020] Optionally, in the OLED display panel provided by the embodiment of the present invention, for a sub-pixel adjacent to the second common voltage line, a data line connected to the sub-pixel is located on a side of the sub-pixel away from the second common voltage line.

[0021] Optionally, in the OLED display panel provided by the embodiment of the present invention, in any of the pixel repeating units, the opening shapes of sub-pixels of the same color are symmetrically arranged with respect to the shared first common voltage line.

[0022] Optionally, the OLED display panel provided in the embodiment of the present invention further includes a pixel driving circuit connected to each of the pixels in a one-to-one correspondence;

[0023] In any of the pixel repetition units, the pixel driving circuits correspondingly connected to the sub-pixels of the same color are symmetrically arranged with respect to the shared first common voltage line.

[0024] Correspondingly, an embodiment of the present invention further provides a display device, comprising any one of the above-mentioned OLED display panels provided by the embodiment of the present invention.

[0025] The beneficial effects of the present invention are as follows:

[0026] An OLED display panel and a display device provided by an embodiment of the present invention, each pixel includes at least three sub-pixels of different colors, and each of the sub-pixels in the pixel is respectively connected to a corresponding data line; each adjacent N pixels arranged along the second direction is a pixel repeating unit, and since the N pixels in the pixel repeating unit share a common signal line; N is an integer greater than 1; therefore, the number of common signal lines in the entire display panel can be reduced, which is conducive to realizing a high PPI display panel. Moreover, for any two pixels arranged adjacently along the second direction, the signal lines on both sides of the sub-pixels of the same color in the two pixels are symmetrically arranged. In this way, it can be ensured that the distribution of signal lines around sub-pixels of the same color is consistent, that is, the layout of the sub-pixels of the same color is consistent, so that the sub-pixels of the same color are affected by the surrounding signal lines to the same extent, thereby ensuring the uniformity of luminescence of the sub-pixels of the same color. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of an OLED display panel provided by an embodiment of the present invention;

[0028] Figure 2 Another structural schematic diagram of an OLED display panel provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of another structure of an OLED display panel provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the structure of two sub-pixels of the same color in an OLED display panel provided by an embodiment of the present invention;

[0031] Figure 5 A schematic structural diagram of a pixel driving circuit in an OLED display panel provided by an embodiment of the present invention;

[0032] Figure 6 A schematic structural diagram of a pixel driving circuit in which two sub-pixels of the same color are correspondingly connected in an OLED display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described below with reference to the accompanying drawings and examples. However, the exemplary embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein; on the contrary, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concepts of the exemplary embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the present invention are all explained using the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the present invention. The drawings of the present invention are only used to illustrate the relative position relationship and do not represent the true proportions.

[0034] It should be noted that specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The subsequent description of the specification is a preferred embodiment of the present application, but the description is for the purpose of illustrating the general principles of the present application and is not intended to limit the scope of the present application. The scope of protection of the present application shall be determined by the definition of the attached claims.

[0035] The OLED display panel and the display device provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] An OLED display panel provided by an embodiment of the present invention is Figure 1 and Figure 2 As shown, it includes a plurality of pixels P1 or P2 arranged in a matrix, and a plurality of signal lines extending along a first direction Y and arranged along a second direction X; wherein:

[0037] The plurality of signal lines include a plurality of data lines D_A, D_B and D_C and a plurality of common signal lines ( Figure 1 and Figure 2 V11 in );

[0038] Each pixel P1 or P2 includes at least three sub-pixels of different colors ( Figure 1 and Figure 2 In the example, a pixel P1 or P2 includes three sub-pixels A, B, and C, and each sub-pixel A, B, and C in the pixel P1 or P2 is connected to a data line D_A, D_B, and D_C respectively;

[0039] Each adjacent N pixels arranged along the second direction X is a pixel repeating unit 10, and the N pixels in the pixel repeating unit 10 share a common signal line V11; N is an integer greater than 1;

[0040] For any two pixels P1 and P2 adjacently arranged along the second direction X, the signal lines on both sides of the sub-pixels of the same color in the two pixels P1 and P2 are symmetrically arranged. For example, the signal lines on both sides of the sub-pixel A in the pixel P1 are symmetrically arranged with the signal lines on both sides of the sub-pixel A in the pixel P2, the signal lines on both sides of the sub-pixel B in the pixel P1 are symmetrically arranged with the signal lines on both sides of the sub-pixel B in the pixel P2, and the signal lines on both sides of the sub-pixel C in the pixel P1 are symmetrically arranged with the signal lines on both sides of the sub-pixel C in the pixel P2.

[0041] In the OLED display panel provided by the embodiment of the present invention, each pixel includes at least three sub-pixels of different colors, and each of the sub-pixels in the pixel is respectively connected to one of the data lines; each adjacent N pixels arranged along the second direction is a pixel repeating unit, and since the N pixels in the pixel repeating unit share a common signal line; N is an integer greater than 1; therefore, the number of common signal lines in the entire display panel can be reduced, which is conducive to realizing a high PPI display panel. Moreover, for any two pixels arranged adjacently along the second direction, the signal lines on both sides of the sub-pixels of the same color in the two pixels are symmetrically arranged. In this way, it can be ensured that the distribution of the signal lines around the sub-pixels of the same color is consistent, that is, the layout of the sub-pixels of the same color is consistent, so that the sub-pixels of the same color are affected by the surrounding signal lines to the same extent, thereby ensuring the uniformity of the light emission of the sub-pixels of the same color.

[0042] In specific implementation, the light emission of a sub-pixel is mainly determined by the opening area of ​​the sub-pixel. Therefore, the opening area of ​​sub-pixels of the same color in existing OLED display panels is the same. However, through research, it is found that the consistency of the signal lines around the sub-pixels (i.e., the consistency of the layout) will also affect the luminescence of the sub-pixels. This is because, if the distribution of the surrounding signal lines of the sub-pixels of the same color is inconsistent, it can affect the light emission angle of the light-emitting layer, and the inconsistent distribution of the signal lines will lead to inconsistent impedance on the signal lines, thereby affecting the luminous current. Therefore, in an embodiment of the present invention, by symmetrically arranging the signal lines on both sides of the sub-pixels of the same color in two pixels, the same color sub-pixels are affected by the surrounding signal lines to the same extent, thereby ensuring the uniformity of luminescence of the sub-pixels of the same color.

[0043] Optionally, in the OLED display panel provided in the embodiment of the present invention, Figure 1 and Figure 2 As shown, the plurality of common signal lines V1 include a plurality of first common voltage lines V11;

[0044] Every two adjacent pixels P1 and P2 arranged along the second direction X constitute a pixel repeating unit 10, that is, N=2;

[0045] In any pixel repeating unit 10 , two pixels P1 and P2 share a first common voltage line V11 , and the shared first common voltage line V11 is located between the two pixels P1 and P2 ;

[0046] In any pixel repeating unit 10, the sub-pixels A, B, and C in the two pixels P1 and P2 are arranged symmetrically with respect to the shared first common voltage line V11;

[0047] In any two pixels adjacent to each other along the second direction, the data lines D_A, D_B and D_C connected to the sub-pixels A, B or C of the same color are symmetrically arranged. Figure 1 and Figure 2 In the embodiment, the data line D_A connected to the sub-pixel A in the pixel P1 and the data line D_A connected to the sub-pixel A in the pixel P2 are symmetrically arranged, the data line D_B connected to the sub-pixel B in the pixel P1 and the data line D_B connected to the sub-pixel B in the pixel P2 are symmetrically arranged, and the data line D_C connected to the sub-pixel C in the pixel P1 and the data line D_C connected to the sub-pixel C in the pixel P2 are symmetrically arranged. Thus, the signal lines on both sides of the sub-pixels of the same color are symmetrically arranged.

[0048] In a specific implementation, in the OLED display panel provided in the embodiment of the present invention, the arrangement order of sub-pixels in a pixel is not limited. For example, Figure 1 As shown, all sub-pixels A, B, and C in the pixel P1 or P2 are arranged along the second direction X, or all sub-pixels in the pixel are arranged along the first direction, which is not limited here.

[0049] The present invention is described in detail below by taking the arrangement of all sub-pixels in a pixel along the second direction as an example. It should be noted that this embodiment is for better explanation of the present invention, but does not limit the present invention.

[0050] Optionally, in the OLED display panel provided in the embodiment of the present invention, Figure 1 and 2 As shown, the data lines D_A, D_B and D_C connected to sub-pixels A, B and C are arranged adjacent to the sub-pixels A, B and C. That is, the data line D_A connected to sub-pixel A is arranged adjacent to the sub-pixel A, the data line D_B connected to sub-pixel B is arranged adjacent to the sub-pixel B, and the data line D_C connected to sub-pixel C is arranged adjacent to the sub-pixel C, so that the distance between the sub-pixel and the data line connected thereto is as close as possible, which facilitates the connection between the data line and the sub-pixel.

[0051] In a specific implementation, the voltage drop on the common signal line may affect the luminance of the sub-pixel. Therefore, in order to reduce the voltage drop on the common signal line on the display panel, the line width of the common signal line is greater than the line width of the data line.

[0052] Optionally, in the OLED display panel provided in the embodiment of the present invention, Figure 1 and Figure 2 As shown, for a sub-pixel C adjacent to the first common voltage line V11, the data line D_C connected to the sub-pixel C is located on a side of the sub-pixel C away from the first common voltage line V11. Avoid arranging the data line D_C and the first common voltage line V11 together, so that the gap between adjacent sub-pixels belonging to different pixels is larger, and the gap between adjacent sub-pixels in the same pixel is smaller.

[0053] Optionally, in the OLED display panel provided in the embodiment of the present invention, Figure 3 As shown, the plurality of common signal lines further include a plurality of second common voltage lines V12;

[0054] A second common voltage line V12 is disposed on both sides of each pixel repeating unit 10, and only one second common voltage line V12 is disposed between two adjacent pixel repeating units 10 along the second direction X;

[0055] Two pixels located at both sides of the second common voltage line V12 and adjacent to the second common voltage line V12 share the second common voltage line V12 .

[0056] Thus, in the OLED display panel provided in the embodiment of the present invention, adjacent pixels share the second common voltage line to further improve the PPI of the display panel. The second common voltage line and the first common voltage line are alternately arranged between adjacent pixels to ensure that the signal line layout on both sides of the sub-pixels of the same color is consistent.

[0057] Optionally, in the OLED display panel provided by the embodiment of the present invention, for the sub-pixel A adjacent to the second common voltage line V12, the data line D_A connected to the sub-pixel A is located at a side of the sub-pixel away from the second common voltage line V12. Avoid arranging the data line D_A and the second common voltage line V12 together, so that the gap between adjacent sub-pixels belonging to different pixels is larger, and the gap between adjacent sub-pixels in the same pixel is smaller.

[0058] In a specific implementation, in the OLED display panel provided in the embodiment of the present invention, a common signal line refers to a signal line whose signal input to each sub-pixel is the same, such as a power supply voltage line and a reference signal line. Therefore, in a specific implementation, the first common voltage line and the second common voltage line can be a power supply voltage line and a reference signal line, respectively, which are not limited here.

[0059] It should be noted that in the embodiment of the present invention, only two pixels sharing one common signal line or two common signal lines are used as an example for description. For the case where two pixels share three common signal lines or more common signal lines, the implementation principle is the same as the above embodiment and will not be described in detail here.

[0060] In a specific implementation, in an OLED display panel, generally, the opening shapes of sub-pixels of the same color are the same. However, in order to further improve the light emission uniformity of sub-pixels of the same color, optionally, in an OLED display panel provided in an embodiment of the present invention, Figure 4 As shown, in any pixel repeating unit 10, the opening shapes of sub-pixels of the same color are symmetrically arranged about the shared first common voltage line V11, which further improves the distribution consistency of sub-pixels of the same color and the surrounding signal lines.

[0061] In a specific implementation, in the OLED display panel provided in the embodiment of the present invention, the opening areas and opening shapes of sub-pixels of different colors in the same pixel may be the same or different, which is not limited here.

[0062] In a specific implementation, the OLED display panel also includes a pixel driving circuit connected to each pixel in a one-to-one correspondence; each pixel driving circuit generally includes a plurality of transistors and at least one capacitor, and the present invention does not limit the specific structure of the pixel driving circuit. Figure 5 The pixel driving circuit shown includes transistors T1 - T3 and a capacitor C1 , but is not limited thereto.

[0063] Optionally, in the OLED display panel, the structure of each pixel driving circuit is the same, that is, the size and film structure of transistors with the same function in different pixel driving circuits are the same, and the capacitance value and film structure of capacitors with the same function are also the same.

[0064] Optionally, in the OLED display panel provided by the embodiment of the present invention, in any pixel repeating unit, the pixel driving circuits corresponding to the sub-pixels of the same color are symmetrically arranged about the shared first common voltage line. That is, the devices with the same function in the pixel driving circuit are also symmetrically arranged, for example Figure 6 In the example of sub-pixel A, in any pixel repeating unit, the pixel driving circuits corresponding to the sub-pixels A of the same color are symmetrically arranged about the shared first common voltage line V11, thereby further ensuring the consistency of the layout of the sub-pixels of the same color, thereby further ensuring the uniformity of the light emission of the sub-pixels of the same color.

[0065] In a specific implementation, in the OLED display panel provided in the embodiment of the present invention, the number of sub-pixels in a pixel is not limited. For example, the number of sub-pixels in a pixel is 3, 4, or 5, etc., which is not limited here. At present, in common OLED display panels, the number of sub-pixels in a pixel is generally 3 or 4. When the number of sub-pixels in a pixel is 3, the 3 sub-pixels may be a red sub-pixel, a blue sub-pixel, and a green sub-pixel, respectively. When the number of sub-pixels in a pixel is 4, the 4 sub-pixels may be a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, respectively.

[0066] Optionally, in the OLED display panel provided in the embodiment of the present invention, Figures 1 to 3 As shown, it also includes: a plurality of scanning lines Gate extending along the second direction X and arranged along the first direction Y, at least one scanning line Gate is disposed on both sides of each pixel; the number of scanning lines Gate located on both sides of each pixel is the same, so that the influence of the scanning line Gate on the same color sub-pixels is consistent.

[0067] Based on the same inventive concept, an embodiment of the present invention further provides a display device, including any of the above-mentioned OLED 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 OLED display panel, and the repeated parts will not be repeated.

[0068] An OLED display panel and a display device provided by an embodiment of the present invention, each pixel includes at least three sub-pixels of different colors, and each of the sub-pixels in the pixel is respectively connected to a corresponding data line; each adjacent N pixels arranged along the second direction X is a pixel repeating unit 10, and since the N pixels in the pixel repeating unit 10 share a common signal line; N is an integer greater than 1; therefore, the number of common signal lines in the entire display panel can be reduced, which is conducive to realizing a high PPI display panel. In addition, for any two pixels arranged adjacently along the second direction X, the signal lines on both sides of the sub-pixels of the same color in the two pixels are symmetrically arranged. In this way, it can be ensured that the distribution of the signal lines around the sub-pixels of the same color is consistent, that is, the layout of the sub-pixels of the same color is consistent, so that the sub-pixels of the same color are affected by the surrounding signal lines to the same extent, thereby ensuring the uniformity of the light emission of the sub-pixels of the same color.

[0069] 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. An OLED display panel, characterized in that: The invention comprises a plurality of pixels arranged in a matrix, and a plurality of signal lines extending along a first direction and arranged along a second direction; wherein: The plurality of signal lines include a plurality of data lines and a plurality of common signal lines; Each of the pixels includes at least three sub-pixels of different colors, and each of the sub-pixels in the pixel is connected to one of the data lines respectively; Each adjacent N pixels arranged along the second direction is a pixel repeating unit, and the N pixels in the pixel repeating unit share one common signal line; N is an integer greater than 1; For any two pixels arranged adjacent to each other along the second direction, the signal lines on both sides of sub-pixels of the same color in the two pixels are arranged symmetrically; N=2, the plurality of common signal lines include a plurality of first common voltage lines; In any one of the pixel repeating units, two of the pixels share one first common voltage line, and the shared first common voltage line is located between the two pixels; In any of the pixel repeating units, the sub-pixels in two of the pixels are arranged symmetrically about the shared first common voltage line; In any two pixels adjacent to each other along the second direction, the data lines connected to sub-pixels of the same color are symmetrically arranged.

2. The OLED display panel according to claim 1, wherein: All sub-pixels in the pixel are arranged along the second direction.

3. The OLED display panel according to claim 2, wherein: The data line connected to the sub-pixel is disposed adjacent to the sub-pixel.

4. The OLED display panel according to claim 3, wherein: For a sub-pixel adjacent to the first common voltage line, a data line connected to the sub-pixel is located at a side of the sub-pixel away from the first common voltage line.

5. The OLED display panel according to claim 4, characterized in that: The plurality of common signal lines further include a plurality of second common voltage lines; One second common voltage line is disposed on both sides of each of the pixel repeating units, and only one second common voltage line is disposed between two adjacent pixel repeating units along the second direction; The pixels located at both sides of the second common voltage line and adjacent to the second common voltage line share the second common voltage line.

6. The OLED display panel according to claim 5, characterized in that: For a sub-pixel adjacent to the second common voltage line, a data line connected to the sub-pixel is located at a side of the sub-pixel away from the second common voltage line.

7. The OLED display panel according to claim 1, wherein: In any of the pixel repeating units, the opening shapes of sub-pixels of the same color are symmetrically arranged with respect to the shared first common voltage line.

8. The OLED display panel according to claim 1, wherein: Also included is a pixel driving circuit connected to each of the pixels in a one-to-one correspondence; In any of the pixel repeating units, the pixel driving circuits correspondingly connected to the sub-pixels of the same color are symmetrically arranged with respect to the shared first common voltage line.

9. A display device, characterized in that: Comprising the OLED display panel as described in any one of claims 1-8.

Images