CN107621716B - Pixel structure, driving method thereof, display panel and display device - Google Patents
Pixel structure, driving method thereof, display panel and display device Download PDFInfo
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Abstract
The invention discloses a pixel structure, a driving method thereof, a display panel and a display device, wherein each pixel group is divided into three pixel areas, the length of each sub-pixel in the first pixel area is larger than the length of each sub-pixel in the second pixel area and the third pixel area in the column direction, and the colors of any two adjacent sub-pixels in the pixel group in the column direction and the row direction are different, so that the high display resolution is realized by utilizing the low physical resolution in the pixel structure.
Description
Technical Field
The invention relates to the technical field of display, in particular to a pixel structure, a driving method thereof, a display panel and a display device.
Background
In general, a pixel in a display panel is composed of three sub-pixels, wherein the three sub-pixels are a red (R) sub-pixel, a green (G) sub-pixel and a blue (B) sub-pixel. When the display panel needs to display a certain color, the color can be combined by adjusting R, G, B the gray scale values of the sub-pixels. The most common arrangement of pixel structures is the stripe arrangement shown in fig. 1.
The arrangement of the stripe pixels as shown in fig. 1 cannot achieve a high display resolution with a low physical resolution. In the prior art, as shown in fig. 2, a high display resolution is achieved by using a staggered arrangement mode of adjacent rows of pixels, but when the pixel arrangement mode in fig. 2 is used for displaying, a display picture has saw teeth and granular feeling, and the quality of the display picture is affected. In the prior art, there is a fully symmetric arrangement as shown in fig. 3, and spatial positions of pixels are equal, so that a good display effect can be theoretically achieved, but due to the limitation of performance differences of luminescent materials used by red (R), green (G) and blue (B) sub-pixels, for example, after a period of use, the degree of attenuation of luminescent properties of sub-pixels of different colors is inconsistent, so that the display quality is reduced, and the pixel arrangement is not practical.
Therefore, how to realize high display resolution by using low physical resolution on the basis of ensuring the quality of the display picture is an urgent problem to be solved.
Disclosure of Invention
Embodiments of the present invention provide a pixel structure, a driving method thereof, a display panel and a display device, so as to solve the problem that the conventional pixel arrangement structure cannot achieve high display resolution with low physical resolution, or the problem that the quality of a display screen is reduced when the high display resolution is achieved with low physical resolution.
Therefore, an embodiment of the present invention provides a pixel structure, including: the pixel groups are arranged in a matrix manner and comprise three pixel areas, each pixel area in a first column comprises one sub-pixel, each pixel area in a second column and a third column comprises two sub-pixels arranged along the column direction, and the length of the sub-pixel of the first pixel area in the column direction is larger than that of any sub-pixel in the second pixel area and the third pixel area in the column direction;
the pixel group includes: a sub-pixel of a first color, a sub-pixel of a second color, and a sub-pixel of a third color, wherein the color of the sub-pixel of the first column of pixel regions in the pixel group is the first color or the third color;
in any two adjacent pixel groups along the row direction, the colors of the sub-pixels in the pixel area of the first column are different; in any two adjacent pixel groups along the column direction, the colors of the sub-pixels in the pixel area of the first column are different;
in the pixel structure, the colors of any two sub-pixels adjacent along the row direction are different, and the colors of any two sub-pixels adjacent along the column direction are different.
Accordingly, an embodiment of the present invention provides a display panel, including: the pixel structure comprises the pixel structure and the pixel circuits which correspond to the sub-pixels in the pixel structure one to one, wherein the pixel circuits are arranged on the array substrate in a matrix mode.
Accordingly, the display device provided by the embodiment of the invention comprises the display panel.
Correspondingly, an embodiment of the present invention provides a driving method for a pixel structure, including:
and for each row of pixel group, using two adjacent sub-pixels with different colors as a pixel unit, and driving each pixel unit in the pixel structure to emit light according to a set time sequence, wherein when any one pixel unit is driven to emit light, at least one sub-pixel adjacent to the pixel unit in the row direction and with a color different from that of the sub-pixel in the pixel unit is used for emitting light.
The pixel structure, the driving method thereof, the display panel and the display device provided by the embodiment of the invention comprise: the pixel groups are arranged in a matrix manner and comprise three pixel areas, each pixel area in a first column comprises one sub-pixel, each pixel area in a second column and a third column comprises two sub-pixels arranged along the column direction, and the length of the sub-pixel of the first pixel area in the column direction is larger than that of any sub-pixel in the second pixel area and the third pixel area in the column direction; the pixel group includes: a sub-pixel of a first color, a sub-pixel of a second color, and a sub-pixel of a third color, wherein the color of the sub-pixel of the first column of pixel regions in the pixel group is the first color or the third color; in any two adjacent pixel groups along the row direction, the colors of the sub-pixels in the pixel area of the first column are different; in any two adjacent pixel groups along the column direction, the colors of the sub-pixels in the pixel area of the first column are different; in the pixel structure, the colors of any two sub-pixels adjacent along the row direction are different, and the colors of any two sub-pixels adjacent along the column direction are different. By dividing each pixel group into three pixel areas, the length of each sub-pixel in the first pixel area is larger than the length of each sub-pixel in the second pixel area and the third pixel area in the column direction, and the colors of any two adjacent sub-pixels in the pixel groups in the column direction and the row direction are different, so that the high display resolution is realized by utilizing the low physical resolution in the pixel structure, and the pixel structure can reduce the saw tooth and granular feeling during display due to the arrangement mode, and fully utilizes the luminous performance of each color sub-pixel, so that the display picture is more uniform.
Drawings
FIG. 1 is a diagram of a pixel structure in the prior art;
FIG. 2 is a diagram of another pixel structure in the prior art;
FIG. 3 is a diagram of another pixel structure in the prior art;
fig. 4 is a schematic diagram of a pixel structure according to an embodiment of the invention;
FIG. 5 is a diagram illustrating another pixel structure according to an embodiment of the present invention;
FIG. 6 is a partial schematic view of a pixel structure provided in FIG. 4;
FIG. 7 is a partial schematic view of a pixel structure shown in FIG. 4;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram illustrating a connection relationship between sub-pixels and data lines in a display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a connection relationship between each sub-pixel and a gate line in a display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of pixel unit allocation in the pixel structure driving method according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
The following describes in detail specific embodiments of a pixel structure, a driving method thereof, a display panel, and a display device according to embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 4, fig. 4 is a schematic diagram of a pixel structure provided in an embodiment of the present invention, and the pixel structure includes: a plurality of pixel groups 1 arranged in a matrix, wherein each pixel group 1 comprises three pixel regions, each first pixel region 11 comprises one sub-pixel, each second pixel region 12 and each third pixel region 13 comprises two sub-pixels arranged along a column direction, and the length of the sub-pixels of each first pixel region 11 in the column direction is greater than the length of any sub-pixel of the second pixel region 12 and the third pixel region 13 in the column direction;
the pixel group 1 includes: a sub-pixel of a first color, a sub-pixel of a second color, and a sub-pixel of a third color, wherein the color of the sub-pixel of the first column of pixel regions 11 in the pixel group 1 is the first color or the third color;
in any two adjacent pixel groups 1 along the row direction, the colors of the sub-pixels in the first column of pixel regions 11 are different; in any two pixel groups 1 adjacent in the column direction, the colors of the sub-pixels in the first column of pixel regions 11 are different;
in the pixel structure, the colors of any two adjacent sub-pixels along the row direction are different, and the colors of any two adjacent sub-pixels along the column direction are different.
The pixel structure provided by the embodiment of the invention comprises: the pixel groups are arranged in a matrix manner, each pixel group comprises three pixel areas, each pixel area in the first column comprises one sub-pixel, each pixel area in the second column and each pixel area in the third column comprises two sub-pixels arranged along the column direction, and the length of the sub-pixel of the first pixel area in the column direction is larger than that of any sub-pixel in the second pixel area and the third pixel area in the column direction; the pixel group includes: the color of the sub-pixels in the first column of pixel areas in the pixel group is the first color or the third color; in any two adjacent pixel groups along the row direction, the colors of the sub-pixels in the first column of pixel areas are different; in any two adjacent pixel groups along the column direction, the colors of the sub-pixels in the first column of pixel areas are different; in the pixel structure, the colors of any two adjacent sub-pixels along the row direction are different, and the colors of any two adjacent sub-pixels along the column direction are different. By dividing each pixel group into three pixel areas, the length of each sub-pixel in the first pixel area is larger than the length of each sub-pixel in the second pixel area and the third pixel area in the column direction, and the colors of any two adjacent sub-pixels in the pixel groups in the column direction and the row direction are different, so that the high display resolution is realized by utilizing the low physical resolution in the pixel structure, and the pixel structure can reduce the saw tooth and granular feeling during display due to the arrangement mode, and fully utilizes the luminous performance of each color sub-pixel, so that the display picture is more uniform.
It should be noted that, the area of the sub-pixels in the first column of pixel regions in the pixel group is larger than the area of the sub-pixels in the second column of pixel regions and the third column of pixel regions, so the sub-pixels of two colors with poor light-emitting performance are generally arranged in the first column of pixel regions in the pixel group, that is, the sub-pixels of the first color and the sub-pixels of the third color are arranged in the first column of sub-pixel regions in the pixel group, thereby ensuring that the degree of attenuation of the light-emitting performance of the sub-pixels of the first color and the sub-pixels of the third color is larger than that of the sub-pixels of the second color even if the sub-pixels of the first color and the sub-pixels of the third color are used for a while, and being beneficial to maintain the uniformity of the light emission of the display panel because the pixel areas of the sub-pixels of the first color and the sub-pixels of the third.
It should be noted that, besides the arrangement of the pixel structures in fig. 4, there is also an arrangement of the pixel structures as shown in fig. 5, and fig. 5 is a schematic diagram of another pixel structure provided in the embodiment of the present invention; or there are other pixel structure arrangement modes with the same rule, and the principles are the same, which are not described herein again.
Specifically, in the pixel structure provided in the embodiment of the present invention, in each row of pixel groups, the odd-numbered column pixel groups are arranged in the same manner, and the even-numbered column pixel groups are arranged in the same manner.
Specifically, in the pixel structure provided by the embodiment of the present invention, as shown in fig. 6, fig. 6 is a partial schematic view of a pixel structure provided in fig. 4; in the detailed structure, the four pixel groups are respectively a first pixel group 1a, a second pixel group 1b, a third pixel group 1c and a fourth pixel group 1d, wherein the first pixel group 1a and the second pixel group 1b are alternately arranged in the first row of pixel groups, and the third pixel group 1c and the fourth pixel group 1d are alternately arranged in the second row of pixel groups, so that the arrangement modes of the pixel groups of the first column and the pixel groups of the third column are the same, that is, the arrangement modes of the pixel groups of the odd columns are the same; the arrangement of each pixel group of the second column and each pixel group of the fourth column is the same, that is, the arrangement of each even-numbered column pixel group is the same.
The display device comprises a first pixel area, a second pixel area, a third pixel area and a fourth pixel area, wherein a sub-pixel in the first pixel area is a red sub-pixel, two sub-pixels arranged along the column direction in the second pixel area in the first pixel area are a blue sub-pixel and a green sub-pixel respectively, and two sub-pixels arranged along the column direction in the third pixel area in the first pixel area are a green sub-pixel and a red sub-pixel respectively; the sub-pixels in the first pixel region in the second pixel group are blue sub-pixels, the two sub-pixels arranged along the column direction in the second pixel region in the second pixel group are respectively green sub-pixels and red sub-pixels, and the two sub-pixels arranged along the column direction in the third pixel region in the second pixel group are respectively blue sub-pixels and green sub-pixels; the sub-pixels in the first pixel region in the third pixel group are blue sub-pixels, the two sub-pixels arranged along the column direction in the second pixel region in the second pixel group are red sub-pixels and green sub-pixels respectively, and the two sub-pixels arranged along the column direction in the third pixel region in the second pixel group are green sub-pixels and blue sub-pixels respectively; the sub-pixels in the first pixel region in the fourth pixel group are red sub-pixels, the two sub-pixels arranged in the second pixel region in the second pixel group along the column direction are green sub-pixels and blue sub-pixels, respectively, and the two sub-pixels arranged in the third pixel region in the second pixel group along the column direction are red sub-pixels and green sub-pixels, respectively.
It should be noted that the above-mentioned rows refer to the extending direction of the gate lines, the above-mentioned columns refer to the extending direction of the data lines, and the above-mentioned embodiments are only for explaining that the arrangement manner of the odd-numbered columns of pixel groups is the same, and the arrangement manner of the even-numbered columns of pixel groups is the same, but not limited to only this kind of pixel arrangement, and the pixel structure that is the same as the above rule also belongs to the protection scope of the present invention.
Specifically, in the pixel structure provided by the embodiment of the present invention, as shown in fig. 7, fig. 7 is another partial schematic view of the pixel structure provided in fig. 4; in the pixel group, the area of the sub-pixel of the first column pixel region 11 is 1.5 times to 2 times that of any one of the second column pixel region 12 and the third column pixel region 13.
Specifically, in the pixel structure provided by the embodiment of the present invention, the first column of pixel regions includes one sub-pixel, and the second column of pixel regions and the third column of pixel regions each include two sub-pixels, wherein the aspect ratio of each sub-pixel may be adjusted according to the specific setting of the pixel arrangement in the display panel, so that the area of the sub-pixel in the first column of pixel region is 1.5 times to 2 times that of any one of the second column of pixel region and the third column of pixel region.
The area of each sub-pixel in the second column pixel region and the area of each sub-pixel in the third column pixel region may be the same or different, and is not particularly limited herein.
Optionally, in the pixel structure provided in the embodiment of the present invention, in the pixel group, the areas of the sub-pixels in the second column of pixel regions and the third column of pixel regions are equal. The areas of the sub-pixels in the second row of pixel areas and the third row of pixel areas are equal, so that the arrangement uniformity of the sub-pixels can be ensured, and the uniformity of the picture displayed by the display panel can be improved.
Optionally, in the pixel structure provided in the embodiment of the present invention, the sub-pixels are rectangular. The sub-pixels are arranged to be rectangular, so that the manufacturing process can be simplified, and the production cost can be saved.
It should be noted that the shape of the sub-pixel is a rectangle, and the rectangle may be a rectangle in a complete geometrical sense, or may be a rectangle whose side edge has a radian and/or whose corner is not a right angle but a rounded corner in order to adapt to the conditions of the existing process, and the specific shape of the rectangle is not specifically limited herein.
Of course, each sub-pixel can be arranged in any regular pattern or irregular pattern, and it is within the scope of the present invention to arrange the pixel structures in the same manner as the pixel structures of the present invention.
Optionally, in the pixel structure provided in the embodiment of the present invention, in the pixel group, widths of the sub-pixels in the row direction are all equal. The width of each sub-pixel along the row direction is set to be equal, so that the sub-pixels can be arranged more uniformly in the row direction, and the display panel can display more uniform pictures.
Specifically, in the above pixel structure provided by the embodiment of the present invention, the first color, the second color, and the third color are respectively one of red, blue, and green. Different colors are combined by adjusting the gray values of the red sub-pixel, the green sub-pixel and the blue sub-pixel so as to be used for displaying a picture by the display panel.
Optionally, in the pixel structure provided in the embodiment of the present invention, the second color is green.
It should be noted that the light-emitting efficiency of the light-emitting material used for the green sub-pixel is better than the light-emitting efficiencies of the light-emitting materials used for the blue sub-pixel and the red sub-pixel, and the light-emitting life of the light-emitting material used for the blue sub-pixel is the lowest, so that the sub-pixels in the first column of pixel regions are set as the red sub-pixels or the blue sub-pixels, and the deficiency in the light-emitting performance is compensated for by increasing the area of the red sub-pixels or the blue sub-pixels.
Based on the same inventive concept, as shown in fig. 8, fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present invention; the pixel structure of any one of the embodiments above is included, and the pixel circuits PX corresponding to the sub-pixels in the pixel structure one to one, where the pixel circuits PX are arranged in a matrix on the array substrate.
Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 9, fig. 9 is a schematic structural diagram of a connection relationship between each sub-pixel and a data line in the display panel provided in the embodiment of the present invention; the display panel also comprises data lines data correspondingly connected with the sub-pixels;
defining the sub-pixel positioned in the first column of pixel area in the pixel group as a first sub-pixel, and defining the sub-pixel positioned in the second column of pixel area and the third column of pixel area as a second sub-pixel;
the first sub-pixels positioned in the same column are correspondingly connected with the same data line data;
the second sub-pixels in the same column correspond to the two data lines data, and the second sub-pixels belonging to the same pixel group are connected with different data lines data.
In the above-described pixel structure, since the arrangement of the sub-pixels determines that the sub-pixels in the pixel group emit light simultaneously, different data lines need to be connected to the second sub-pixels in the same pixel group to input different data signals to the different second sub-pixels, so that the display panel can normally perform display.
Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 10, fig. 10 is a schematic structural diagram of a connection relationship between each sub-pixel and a gate line in the display panel provided in the embodiment of the present invention; and a plurality of grid lines gate, wherein each grid line gate is connected with each sub-pixel in each row of pixel group. Each grid line gate is connected with each sub-pixel in each pixel group in sequence to control the opening or closing of each row of pixel group.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, including the display panel provided in the embodiment of the present invention, where the display device may be a mobile phone as shown in fig. 11, fig. 11 is a schematic structural diagram of the display device provided in the embodiment of the present invention, and may also be any product or component having a display function, such as a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator, which are not limited herein. The implementation of the display device can be seen in the above embodiments of the liquid crystal display panel, and repeated descriptions are omitted.
Based on the same inventive concept, an embodiment of the present invention further provides a driving method of a pixel structure, including: and for each row of pixel group, using two adjacent sub-pixels with different colors as a pixel unit, and driving each pixel unit in the pixel structure to emit light according to a set time sequence, wherein when any pixel unit is driven to emit light, at least one sub-pixel adjacent to the pixel unit in the row direction and with a color different from that of the sub-pixel in the pixel unit is used for emitting light.
Specifically, in the driving method of the pixel structure provided in the embodiment of the present invention, taking the pixel structure shown in fig. 12 as an example, fig. 12 is a schematic structural diagram of pixel unit allocation in the driving method of the pixel structure provided in the embodiment of the present invention; the red sub-pixel R in the first column of pixel regions in the first pixel group 1a and the green sub-pixel G in the second column of pixel regions in the first pixel group 1a constitute a first pixel unit D1, and light emission can be performed by the blue sub-pixel B in the second column of pixel regions in the first pixel group 1a, and of course, light emission can be performed by the blue sub-pixel B in the pixel group adjacent to the first pixel group 1 a; when the red sub-pixel R in the first column of pixel regions in the first pixel group 1a and the green sub-pixel G in the second column of pixel regions in the first pixel group 1a form the first pixel unit D1, the blue sub-pixel B in the second column of pixel regions in the first pixel group 1a and the red sub-pixel R in the third column of pixel regions in the first pixel group 1a form the second pixel unit D2, and the green sub-pixel G in the second column of pixel regions in the first pixel group 1a and the green sub-pixel G in the third column of pixel regions in the first pixel group 1a are used for emitting light; the green sub-pixel G in the third column of the pixel region in the first pixel group 1a and the blue sub-pixel B in the first column of the pixel region in the second pixel group 1B form a third pixel unit D3, which can be used to mix the red sub-pixel R in the third column of the pixel region in the first pixel group 1a and/or the red sub-pixel R in the second column of the pixel region in the second pixel group 1B, preferably the red sub-pixel R in the third column of the pixel region in the first pixel group 1a, so as to avoid the display frame from generating jaggies during displaying.
It should be noted that the above is only a preferred embodiment of pixel unit allocation, and the pixel unit allocation method conforming to the same allocation rule is within the scope of the invention.
Specifically, in the driving method of the pixel structure further provided by the embodiment of the present invention, in the pixel group, the sub-pixel in the first column and the sub-pixel of the second color in the adjacent column constitute one pixel unit.
Specifically, in the driving method of the pixel structure further provided by the embodiment of the present invention, the sub-pixel in the first column and the sub-pixel of the second color in the adjacent column form a pixel unit, specifically, taking fig. 12 as an example to illustrate, the red sub-pixel R in the pixel region of the first column in the first pixel group 1a and the green sub-pixel G in the pixel region of the second column in the first pixel group 1a form a first pixel unit D1, and when displaying, the blue sub-pixel B in the pixel region of the second column in the first pixel group 1a is used for emitting light; in this way, the blue sub-pixel B in the second column of pixel area in the first pixel group 1a and the red sub-pixel R in the third column of pixel area in the first pixel group 1a form a second pixel unit D2, and when displaying, the green sub-pixel G in the second column of pixel area in the first pixel group 1a and the green sub-pixel G in the third column of pixel area in the first pixel group 1a are used for emitting light; similarly, the green sub-pixel G in the third column of pixel region in the first pixel group 1a and the blue sub-pixel B in the first column of pixel region in the second pixel group 1B form a third pixel unit D3, and when displaying, the red sub-pixel R in the third column of pixel region in the first pixel group 1a is used for emitting light; the green sub-pixel G and the red sub-pixel R in the second column of pixel regions in the second pixel group 1B constitute a fourth pixel unit D4, and at the time of display, the blue sub-pixel B in the first column of pixel regions in the second pixel group 1B is used for emitting light; the blue sub-pixel B and the green sub-pixel G in the third column of pixel regions in the second pixel group 1B constitute a fifth pixel unit D5, and when displaying, the red sub-pixel in the first column of pixel regions in the third pixel group is used for displaying, wherein the third pixel group is not shown in the figure. The distribution mode of the pixel units can ensure that the light-emitting center of each pixel unit is positioned on the central axis of each pixel group in the row direction, and the uniformity of display can be ensured.
Specifically, in the driving method of the pixel structure further provided by the embodiment of the present invention, in the sub-pixel of the first color, the sub-pixel of the second color, and the sub-pixel of the third color, the light emitting lifetime of the sub-pixel of the third color is the smallest; the driving method further includes:
when the pixel unit containing the sub-pixel of the third color is driven to emit light, at least one sub-pixel of the third color close to the pixel unit in the row direction is also used for emitting light.
Specifically, in the driving method of the pixel structure further provided by the embodiment of the present invention, after the usage time of the pixel structure exceeds the preset time, when the pixel unit including the sub-pixel of the third color is driven to emit light, at least one sub-pixel of the third color close to the pixel unit in the row direction is also used to emit light. Since the light emitting life of the sub-pixel of the third color is the shortest, that is, the light emitting efficiency of the sub-pixel of the third color is smaller and smaller as the service time of the sub-pixel of the third color is prolonged, in order to make the light emission of each pixel unit uniform after the sub-pixel of the third color is used for a period of time, when the pixel unit including the sub-pixel of the third color is driven to emit light, at least one sub-pixel of the third color close to the pixel unit in the row direction is also used for emitting light, and the defect of the light emitting life of the sub-pixel of the third color is compensated by a method of increasing the number of the sub-pixels of the third color, so as to realize the uniformity of the.
For example, taking the pixel structure shown in fig. 12 as an example, the second pixel unit D2 includes a blue sub-pixel B and a red sub-pixel R, the light emitting performance of the blue sub-pixel B is attenuated after a period of use, and in order to enable the luminance emitted by the blue sub-pixel B to be unaffected when the second pixel unit D2 emits light, the blue sub-pixel B in the first column pixel region in the second column pixel group 1B and the green sub-pixel G in the third column pixel region in the first pixel group 1a need to be borrowed in addition to the green sub-pixel G in the second column pixel region in the first pixel group 1a, so as to ensure the uniformity of the display screen.
Specifically, in the driving method of the pixel structure further provided by the embodiment of the present invention, when the pixel unit including the sub-pixels of the first color and the second color is driven to emit light, the sum of the areas of all the sub-pixels of the third color borrowed by the pixel unit is at least twice of the minimum sub-pixel area in the pixel unit. The area of the third color sub-pixel is increased to compensate the attenuation of the brightness of the third color sub-pixel along with the increase of the using time, so that the component of the third color sub-pixel in the display panel is displayed normally, and the aging influence of the third color sub-pixel is improved, thereby realizing the uniformity of the picture displayed by the display panel.
Specifically, the driving method of the pixel structure further provided by the embodiment of the present invention includes:
the gray-scale value Y corresponding to each sub-pixel satisfies the following formula:
wherein N represents the number of pixel units emitting light of the common sub-pixel, b represents the gray-scale luminance conversion coefficient, and X representsiIndicates the luminance value, a, of the desired sub-pixel emission in the ith pixel cell where the common sub-pixel emits lightiIs shown in a common sub-imageThe weighting coefficient of the brightness value sent by the sub-pixel is needed in the ith pixel unit of the pixel luminescence, and the weighting coefficient of the brightness value sent by the pixel unit where the sub-pixel is located is larger than the weighting coefficient of the brightness value sent by the pixel unit where the borrowing sub-pixel is located.
It should be noted that at least two sets of driving methods of the pixel structure are prestored in the pixel driving circuit, the client system software judges the time length used by the currently adopted driving method of the pixel structure in real time, and when the time length used by the driving method of the pixel structure exceeds the preset time length, a control signal is sent to the pixel driving circuit, so that the pixel driving circuit switches the driving methods of the pixel structure, and the light emission of the pixel unit including the sub-pixel of the third color is compensated better, so that the display picture of the display panel is more uniform. The preset time length is determined according to the light emitting performance of the light emitting material used by each sub-pixel, and the preset time length is different due to different light emitting materials, which is determined according to specific situations.
The pixel structure, the driving method thereof, the display panel and the display device provided by the embodiment of the invention comprise: the pixel groups are arranged in a matrix manner and comprise three pixel areas, each pixel area in a first column comprises one sub-pixel, each pixel area in a second column and a third column comprises two sub-pixels arranged along the column direction, and the length of the sub-pixel of the first pixel area in the column direction is larger than that of any sub-pixel in the second pixel area and the third pixel area in the column direction; the pixel group includes: a sub-pixel of a first color, a sub-pixel of a second color, and a sub-pixel of a third color, wherein the color of the sub-pixel of the first column of pixel regions in the pixel group is the first color or the third color; in any two adjacent pixel groups along the row direction, the colors of the sub-pixels in the pixel area of the first column are different; in any two adjacent pixel groups along the column direction, the colors of the sub-pixels in the pixel area of the first column are different; in the pixel structure, the colors of any two sub-pixels adjacent along the row direction are different, and the colors of any two sub-pixels adjacent along the column direction are different. By dividing each pixel group into three pixel areas, the length of each sub-pixel in the first pixel area is larger than the length of each sub-pixel in the second pixel area and the third pixel area in the column direction, and the colors of any two adjacent sub-pixels in the pixel groups in the column direction and the row direction are different, so that the high display resolution is realized by utilizing the low physical resolution in the pixel structure, and the pixel structure can reduce the saw tooth and granular feeling during display due to the arrangement mode, and fully utilizes the luminous performance of each color sub-pixel, so that the display picture is more uniform.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such 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 such modifications and variations.
Claims (18)
1. A pixel structure, comprising: the pixel groups are arranged in a matrix manner and comprise three pixel areas, each pixel area in a first column comprises one sub-pixel, each pixel area in a second column and a third column comprises two sub-pixels arranged along the column direction, and the length of the sub-pixel of the first pixel area in the column direction is larger than that of any sub-pixel in the second pixel area and the third pixel area in the column direction;
the pixel group includes: a sub-pixel of a first color, a sub-pixel of a second color, and a sub-pixel of a third color, wherein the color of the sub-pixel of the first column of pixel regions in the pixel group is the first color or the third color;
in any two adjacent pixel groups along the row direction, the colors of the sub-pixels in the pixel area of the first column are different; in any two adjacent pixel groups along the column direction, the colors of the sub-pixels in the pixel area of the first column are different;
in the pixel structure, the colors of any two sub-pixels adjacent along the row direction are different, and the colors of any two sub-pixels adjacent along the column direction are different.
2. The pixel structure of claim 1, wherein in each row of pixel groups, odd-numbered column pixel groups are arranged in the same manner, and even-numbered column pixel groups are arranged in the same manner.
3. The pixel structure according to claim 1, wherein in the pixel group, an area of a sub-pixel of the first column of pixel regions is 1.5 times to 2 times an area of any one of the second column of pixel regions and the third column of pixel regions.
4. The pixel structure according to claim 3, wherein in the pixel group, the area of each sub-pixel in the second column pixel region and the third column pixel region is equal.
5. The pixel structure of claim 3, wherein said sub-pixels are rectangular in shape.
6. The pixel structure of claim 5, wherein the sub-pixels in the pixel group have equal widths in the row direction.
7. The pixel structure according to any of claims 1-6, wherein the first color, the second color, and the third color are each one of red, blue, and green.
8. The pixel structure of claim 7, wherein said second color is green.
9. A display panel comprising the pixel structure according to any one of claims 1 to 8, and pixel circuits corresponding to the sub-pixels in the pixel structure one to one, wherein the pixel circuits are arranged in a matrix on an array substrate.
10. The display panel according to claim 9, further comprising a data line connected to each of the sub-pixels;
defining the sub-pixel positioned in the first column of pixel area in the pixel group as a first sub-pixel, and defining the sub-pixel positioned in the second column of pixel area and the third column of pixel area as a second sub-pixel;
the first sub-pixels positioned in the same column are correspondingly connected with the same data line;
the second sub-pixels located in the same column correspond to the two data lines, and the second sub-pixels belonging to the same pixel group are connected with different data lines.
11. The display panel of claim 9, further comprising a plurality of gate lines, each of the gate lines being connected to a respective one of the subpixels in a respective row of the pixel groups.
12. A display device characterized by comprising the display panel according to any one of claims 9 to 11.
13. A driving method of driving a pixel structure according to any one of claims 1 to 8, comprising:
for each row of pixel group, using two adjacent sub-pixels with different colors as a pixel unit, and driving each pixel unit in the pixel structure to emit light according to a set time sequence, wherein in each pixel unit, the two adjacent sub-pixels with different colors comprise any one of the following: two sub-pixels with different colors adjacent along the row direction, two sub-pixels with different colors adjacent along the column direction and two sub-pixels with different colors adjacent diagonally are used for emitting light by at least one sub-pixel with different colors adjacent to the pixel unit along the row direction when any pixel unit is driven to emit light.
14. The driving method according to claim 13, wherein, for each row of pixel groups, the sub-pixel in the first column of each of the pixel groups constitutes one pixel unit with one sub-pixel of the second color in its adjacent column in the row direction.
15. The driving method according to claim 13, wherein, of the sub-pixel of the first color, the sub-pixel of the second color, and the sub-pixel of the third color, the light emission lifetime of the sub-pixel of the third color is smallest; the driving method further includes:
when the pixel unit containing the sub-pixel of the third color is driven to emit light, at least one sub-pixel of the third color close to the pixel unit in the row direction is also used for emitting light.
16. The driving method according to claim 15, wherein when driving a pixel unit including a sub-pixel of a third color to emit light after the pixel structure has been used for more than a predetermined time, at least one sub-pixel of the third color adjacent to the pixel unit in a row direction is also used to emit light.
17. The driving method according to claim 15, further comprising:
when a pixel unit containing sub-pixels of the first color and the second color is driven to emit light, the sum of the areas of all sub-pixels of the third color borrowed by the pixel unit is at least twice of the area of the minimum sub-pixel in the pixel unit.
18. The driving method according to any one of claims 13 to 17, comprising:
the gray-scale value Y corresponding to each sub-pixel satisfies the following formula:
wherein N represents the number of pixel units which share the sub-pixel to emit light, b represents a gray-scale luminance conversion coefficient, and X representsiIndicates a luminance value, a, required to be emitted from the sub-pixel in an ith pixel unit that shares emission of the sub-pixeliAnd the weighting coefficient of the brightness value emitted by the sub-pixel is larger than the weighting coefficient of the brightness value emitted by the pixel unit with the sub-pixel.
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| CN108564909B (en) * | 2018-03-07 | 2021-08-13 | 厦门天马微电子有限公司 | Display panel and display device |
| CN108564887B (en) * | 2018-04-17 | 2020-08-14 | 武汉天马微电子有限公司 | Display panel and display device |
| CN109061973B (en) * | 2018-09-14 | 2021-04-16 | 重庆惠科金渝光电科技有限公司 | Pixel structure, display panel and display device |
| CN109509777A (en) * | 2018-11-30 | 2019-03-22 | 潍坊歌尔电子有限公司 | Display panel, dot structure and its resolution extension method |
| CN109524449B (en) * | 2019-01-09 | 2020-12-04 | 昆山国显光电有限公司 | Pixel structure, display substrate and display device |
| CN109616074B (en) * | 2019-01-31 | 2021-04-13 | 厦门天马微电子有限公司 | Display method and display device |
| CN110136625A (en) * | 2019-05-17 | 2019-08-16 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN110807994B (en) * | 2019-11-11 | 2021-08-03 | 武汉天马微电子有限公司 | Pixel arrangement structure, display panel and display device |
| CN110807819B (en) * | 2019-11-25 | 2022-05-17 | 昆山国显光电有限公司 | Image processing method and apparatus, and storage medium |
| CN111028695B (en) * | 2019-12-30 | 2021-09-28 | 上海天马微电子有限公司 | Display panel, display method thereof and display device |
| CN114167637B (en) * | 2021-11-30 | 2024-07-09 | 重庆惠科金渝光电科技有限公司 | Liquid crystal display panel and liquid crystal display module |
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