Disclosure of Invention
The embodiment of the invention provides an OLED display panel and a display device, which are used for improving the PPI of the display panel.
The OLED display panel provided by the embodiment of the invention comprises a plurality of pixels arranged in a matrix and a plurality of signal lines arranged along a second direction, wherein the plurality of signal lines extend along the first direction, and the plurality of signal lines are arranged along the second direction, wherein:
the plurality of signal lines comprise a plurality of data lines and a plurality of common signal lines;
Each pixel comprises at least three sub-pixels with different colors, and each sub-pixel in the pixel is correspondingly connected with one data line;
taking every adjacent N pixels arranged along the second direction as a pixel repeating unit, wherein N pixels in the pixel repeating unit share one common signal line, N is an integer greater than 1;
For any two pixels adjacently arranged along the second direction, the signal lines on two sides of the same-color sub-pixels in the two pixels are symmetrically arranged.
Optionally, in the OLED display panel provided in the embodiment of the present invention, n=2, and the plurality of common signal lines includes a plurality of first common voltage lines;
in any one of the pixel repeating units, two of the pixels share one of the first common voltage lines, and the shared first common voltage line is located between the two pixels;
in any one of the pixel repeating units, the arrangement of the sub-pixels in the two pixels is symmetrically arranged about the common first common voltage line;
In any two adjacent pixels along the second direction, the data lines connected with the sub-pixels with the same color are symmetrically arranged.
Optionally, in the OLED display panel provided in the embodiment of the present invention, all sub-pixels in the pixel are arranged along the second direction.
Optionally, in the OLED display panel provided in the embodiment of the present invention, the data line connected to the subpixel is disposed adjacent to the subpixel.
Optionally, in the OLED display panel provided in the 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 at a side of the sub-pixel away from the first common voltage line.
Optionally, in the OLED display panel provided in the embodiment of the present invention, the plurality of common signal lines further includes a plurality of second common voltage lines;
two sides of each pixel repeating unit are respectively provided with one second common voltage line, and only one second common voltage line is arranged between two adjacent pixel repeating units along the second direction;
The pixels located at both sides of the second common voltage line and both adjacent to the second common voltage line share the second common voltage line.
Optionally, in the OLED display panel provided in 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 at a side of the sub-pixel away from the second common voltage line.
Alternatively, in the OLED display panel provided in the embodiment of the present invention, in any one of the pixel repeating units, the opening shapes of the sub-pixels of the same color are symmetrically disposed with respect to the common first common voltage line.
Optionally, in the OLED display panel provided by the embodiment of the present invention, a pixel driving circuit is further included, which is connected to each pixel in a one-to-one correspondence manner;
in any one of the pixel repeating units, the pixel driving circuits to which the sub-pixels of the same color are correspondingly connected are symmetrically arranged with respect to the common first common voltage line.
Correspondingly, the embodiment of the invention also provides a display device which comprises any one of the OLED display panels provided by the embodiment of the invention.
The invention has the following beneficial effects:
According to the OLED display panel and the display device, each pixel comprises at least three sub-pixels with different colors, each sub-pixel in the pixel is correspondingly connected with one data line, every adjacent N pixels arranged along the second direction are used as pixel repeating units, N pixels in the pixel repeating units share one common signal line, N is an integer larger than 1, and therefore the number of the common signal lines in the whole display panel can be reduced, and the display panel with high PPI is facilitated. And, for any two pixels adjacently arranged along the second direction, the signal lines on both sides of the same-color sub-pixel in the two pixels are symmetrically arranged. Therefore, the distribution of peripheral signal lines of the same-color sub-pixels is consistent, namely the layout of the same-color sub-pixels is consistent, so that the influence degree of the peripheral signal lines on the same-color sub-pixels is consistent, and the light emitting uniformity of the same-color sub-pixels is further ensured.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a further description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. However, the exemplary embodiments can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. The words expressing the positions and directions described in the present invention are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present invention. The drawings of the present invention are merely schematic representations of relative positional relationships and are not intended to represent true proportions.
It is noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the application. Therefore, the present application is not limited by the specific embodiments disclosed below. The description hereinafter sets forth a preferred embodiment for practicing the application, but is not intended to limit the scope of the application, as the description is given for the purpose of illustrating the general principles of the application. The scope of the application is defined by the appended claims.
The OLED display panel and the display device provided by the embodiments of the present invention are specifically described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the OLED display panel provided in the embodiment of the present invention 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, where:
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 (V11 in fig. 1 and 2);
Each pixel P1 or P2 includes at least three sub-pixels of different colors (fig. 1 and 2 illustrate that the pixel P1 or P2 includes A, B, C sub-pixels, and each sub-pixel A, B, C in the pixel P1 or P2 is correspondingly connected to one data line d_ A, D _b and d_c, respectively;
Taking every adjacent N pixels arranged along the second direction X as a pixel repeating unit 10, wherein N pixels in the pixel repeating unit 10 share a common signal line V11;
For any two pixels P1 and P2 adjacently disposed in the second direction X, signal lines on both sides of the same-color sub-pixels in the two pixels P1 and P2 are symmetrically disposed. 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.
According to the OLED display panel provided by the embodiment of the invention, each pixel comprises at least three sub-pixels with different colors, each sub-pixel in the pixel is correspondingly connected with one data line, every adjacent N pixels arranged along the second direction are taken as a pixel repeating unit, N pixels in the pixel repeating unit share one common signal line, N is an integer larger than 1, and therefore the number of the common signal lines in the whole display panel can be reduced, and the display panel with high PPI is facilitated. And, for any two pixels adjacently arranged along the second direction, the signal lines on both sides of the same-color sub-pixel in the two pixels are symmetrically arranged. Therefore, the distribution of peripheral signal lines of the same-color sub-pixels is consistent, namely the layout of the same-color sub-pixels is consistent, so that the influence degree of the peripheral signal lines on the same-color sub-pixels is consistent, and the light emitting uniformity of the same-color sub-pixels is further ensured.
In practical implementation, the light output of the sub-pixel is mainly determined by the opening area of the sub-pixel. Accordingly, the opening areas of the same color sub-pixels in the conventional OLED display panel are the same. However, it has been found through research that the uniformity of signal lines around the sub-pixels (i.e., the uniformity of layout) also affects the emission of the sub-pixels. This is because, if the peripheral signal lines of the same color sub-pixels are not uniformly distributed, the light emission angle of the light emitting layer can be affected, and the signal lines are not uniformly distributed, and the impedance on the signal lines is not uniform, thereby affecting the light emission current. Therefore, in the embodiment of the invention, the signal lines on two sides of the sub-pixels with the same color in the two pixels are symmetrically arranged, so that the influence degree of the peripheral signal lines on the sub-pixels with the same color is consistent, and the light emitting uniformity of the sub-pixels with the same color can be ensured.
Alternatively, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 1 and 2, the plurality of common signal lines V1 includes a plurality of first common voltage lines V11;
every two adjacent pixels P1 and P2 arranged along the second direction X are taken as a pixel repeating unit 10, i.e., n=2;
In any one of the pixel repeating units 10, the two pixels P1 and P2 share one first common voltage line V11, and the shared first common voltage line V11 is located between the two pixels P1 and P2;
In any one of the pixel repeating units 10, the arrangement of the sub-pixels A, B, C in the two pixels P1 and P2 is symmetrically disposed about the common first common voltage line V11;
In any two of the pixels adjacent in the second direction, the data lines d_ A, D _b and d_c connected to the same color sub-pixels A, B or C are symmetrically disposed. For example, in fig. 1 and 2, the data line d_a corresponding to the sub-pixel a in the pixel P1 and the data line d_a corresponding to the sub-pixel a in the pixel P2 are symmetrically arranged, the data line d_b corresponding to the sub-pixel B in the pixel P1 and the data line d_b corresponding to the sub-pixel B in the pixel P2 are symmetrically arranged, and the data line d_c corresponding to the sub-pixel C in the pixel P1 and the data line d_c corresponding to the sub-pixel C in the pixel P2 are symmetrically arranged. Thereby realizing that the signal lines on both sides of the same-color sub-pixels are symmetrically arranged.
In a specific implementation, in the OLED display panel provided in the embodiment of the present invention, the arrangement order of the sub-pixels in the pixel is not limited, for example, as shown in fig. 1, all the sub-pixels A, B, C in the pixel P1 or P2 are arranged along the second direction X, or all the sub-pixels in the pixel are arranged along the first direction, which is not limited herein.
The present invention will be described in detail below taking an example in which all the sub-pixels in a pixel are arranged in the second direction. The present embodiment is for better explaining the present invention, but not limiting the present invention.
Alternatively, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 1 and 2, the data lines d_ A, D _b and d_c connected to the sub-pixels A, B and C are disposed adjacent to the sub-pixel A, B, C. That is, the data line d_a connected to the subpixel a is disposed adjacent to the subpixel a, the data line d_b connected to the subpixel B is disposed adjacent to the subpixel B, and the data line d_c connected to the subpixel C is disposed adjacent to the subpixel C, so that the distance between the subpixel and the data line connected thereto is as close as possible, thereby facilitating the connection of the data line to the subpixel.
In practice, the voltage drop on the common signal line may affect the emission luminance of the sub-pixels, so that the line width of the common signal line is greater than the line width of the data line in order to reduce the voltage drop of the common signal line on the display panel.
Alternatively, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 1 and 2, for the sub-pixel C adjacent to the first common voltage line V11, the data line d_c connected to the sub-pixel C is located at a side of the sub-pixel C away from the first common voltage line V11. The data line d_c and the first common voltage line V11 are prevented from being disposed together so that a gap between adjacent sub-pixels along the pixels belonging to different pixels is large and a gap between adjacent sub-pixels in the same pixel is small.
Optionally, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 3, the plurality of common signal lines further includes a plurality of second common voltage lines V12;
Two sides of each pixel repeating unit 10 are respectively provided with one second common voltage line V12, and only one second common voltage line V12 is provided between two adjacent pixel repeating units 10 along the second direction X;
Two pixels located at both sides of the second common voltage line V12 and both adjacent to the second common voltage line V12 share the second common voltage line V12.
In this way, in the OLED display panel provided in the embodiment of the present invention, adjacent pixels share the second common voltage line, so that PPI of the display panel can be further improved, and the second common voltage line and the first common voltage line are alternately arranged between the adjacent pixels, so as to ensure that the signal lines on two sides of the sub-pixels with the same color are consistent in layout.
Alternatively, in the OLED display panel provided in 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. The data line d_a and the second common voltage line V12 are prevented from being disposed together so that a gap between adjacent sub-pixels along the pixels belonging to different pixels is large and a gap between adjacent sub-pixels in the same pixel is small.
In particular, in the OLED display panel provided in the embodiment of the present invention, the common signal line refers to a signal line in which signals input to each subpixel are the same. Such as a supply voltage line, a reference signal line. Accordingly, in the embodiment, the first common voltage line and the second common voltage line may be a power supply voltage line and a reference signal line, respectively, which are not limited herein.
In the embodiment of the present invention, only one common signal line is shared by two pixels, or two common signal lines are shared. In the case where three common signal lines or more are shared by two pixels, the implementation principle is the same as that of the above embodiment, and a description thereof will be omitted.
In practice, in an OLED display panel, the shape of the openings of the subpixels of the same color is generally the same. However, in order to further improve the uniformity of light emission of the same color sub-pixels, optionally, in the OLED display panel provided in the embodiment of the present invention, as shown in fig. 4, in any one of the pixel repeating units 10, the opening shapes of the same color sub-pixels are symmetrically arranged with respect to the common first common voltage line V11. Thus, the distribution consistency of the sub-pixels with the same color and the peripheral signal lines is further improved.
In a specific implementation, in the OLED display panel provided in the embodiment of the present invention, the opening areas and the opening shapes of the sub-pixels with different colors in the same pixel may be the same or different, which is not limited herein.
In particular, the OLED display panel further comprises a pixel driving circuit connected with each pixel in a one-to-one correspondence manner, wherein each pixel driving circuit generally comprises a plurality of transistors and at least one capacitor. For example, the pixel driving circuit shown in fig. 5 includes transistors T1 to T3 and a capacitor C1, but is not limited thereto.
Alternatively, in the OLED display panel, the structure of each pixel driving circuit is the same, that is, the size and the film structure of the transistors having the same function in different pixel driving circuits are the same, and the capacitance value and the film structure of the capacitors having the same function are the same.
Optionally, in the OLED display panel provided in the embodiment of the present invention, in any pixel repeating unit, pixel driving circuits connected to sub-pixels of the same color in correspondence are symmetrically disposed with respect to a common first common voltage line. That is, the devices having the same function in the pixel driving circuits are also symmetrically arranged, for example, in fig. 6, in any pixel repeating unit, the pixel driving circuits to which the sub-pixels a of the same color are correspondingly connected are symmetrically arranged with respect to the common first common voltage line V11. Thereby further ensuring the layout consistency of the sub-pixels with the same color, and further ensuring the luminous uniformity of the sub-pixels with the same color.
In a specific implementation, in the OLED display panel provided by 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 herein. Currently, in a common OLED display panel, 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 red, blue, and green sub-pixels, respectively. When the number of sub-pixels in a pixel is 4, the 4 sub-pixels may be red, blue, green, and white sub-pixels, respectively.
Optionally, in the OLED display panel provided by the embodiment of the present invention, as shown in fig. 1 to 3, the OLED display panel further includes a plurality of scan lines Gate extending along the second direction X and arranged along the first direction Y, at least one scan line Gate is respectively disposed on two sides of each pixel, and the number of scan lines Gate disposed on two sides of each pixel is the same. Thereby making the influence of the scan line Gate on the same-color sub-pixels uniform.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises any one of the OLED display panels provided by the embodiment of the invention. The display device can be any product or component with display function such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. The implementation of the display device can be referred to the embodiment of the OLED display panel, and the repetition is not repeated.
According to the OLED display panel and the display device provided by the embodiment of the invention, each pixel comprises at least three sub-pixels with different colors, each sub-pixel in the pixel is correspondingly connected with one data line, every adjacent N pixels arranged along the second direction X are taken as a pixel repeating unit 10, N pixels in the pixel repeating unit 10 share one common signal line, N is an integer larger than 1, and therefore the number of the common signal lines in the whole display panel can be reduced, and the display panel with high PPI is facilitated. And, for any two pixels adjacently arranged along the second direction X, the signal lines on both sides of the same-color sub-pixel in the two pixels are symmetrically arranged. Therefore, the distribution of peripheral signal lines of the same-color sub-pixels is consistent, namely the layout of the same-color sub-pixels is consistent, so that the influence degree of the peripheral signal lines on the same-color sub-pixels is consistent, and the light emitting uniformity of the same-color sub-pixels is further ensured.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.