CN108511481B - Dot structure and display device - Google Patents

Dot structure and display device Download PDF

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Publication number
CN108511481B
CN108511481B CN201710776282.8A CN201710776282A CN108511481B CN 108511481 B CN108511481 B CN 108511481B CN 201710776282 A CN201710776282 A CN 201710776282A CN 108511481 B CN108511481 B CN 108511481B
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sub
pixel
pixels
repeating units
unit
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CN108511481A (en
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刘明星
李俊峰
王徐亮
高峰
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Kunshan Guoxian Photoelectric Co Ltd
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Kunshan Guoxian Photoelectric Co Ltd
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Priority to CN201710776282.8A priority Critical patent/CN108511481B/en
Priority to PCT/CN2018/094822 priority patent/WO2019042013A1/en
Priority to TW107124122A priority patent/TWI674688B/en
Publication of CN108511481A publication Critical patent/CN108511481A/en
Priority to US16/437,110 priority patent/US10971555B2/en
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    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30Devices specially adapted for multicolour light emission
    • H10K59/35Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention provides a kind of dot structure and display device, dot structure includes multiple repetitive units of array arrangement, each repetitive unit includes that there are three types of multiple sub-pixels of color for tool, the sub-pixel of one of color has one, there are two the sub-pixel of remaining two kinds of color respectively has, it is located at a kind of two sides of the sub-pixel of color, it is located in the middle sub-pixel and forms two pixel units with the two sub-pixels of two sides respectively, sharing for sub-pixel is realized, the resolution ratio for improving display device is conducive to;In the sub-pixel of three kinds of colors, the maximum sub-pixel of brightness is divided into two subordinate sub-pixels, so that the quantity of the maximum sub-pixel of brightness increases, to increase PPI, improve the resolution ratio of display device, meanwhile two sub-pixels being spaced can be deposited simultaneously using the same opening of Vapor deposition mask plate, the difficulty of Vapor deposition mask plate manufacture craft and evaporation process can be reduced.

Description

Pixel structure and display device
Technical Field
The invention relates to the technical field of plane display, in particular to a pixel structure and a display device.
Background
An Organic Light-Emitting Diode (OLED) Display device is one of the hot spots in the research field of flat panel displays, and compared with a Liquid Crystal Display (LCD), an OLED Display device has the advantages of wide viewing angle, high brightness, high contrast, low energy consumption, lighter and thinner volume, and the like. Currently, in the field of flat panel displays such as mobile phones, Personal Digital Assistants (PDAs), and digital cameras, OLED display devices have begun to replace conventional liquid crystal displays.
The structure of the OLED display device mainly comprises: the liquid crystal display device includes a substrate base plate, and pixels arranged in a matrix on the substrate base plate. In general, each pixel is formed with an organic electroluminescent structure at a corresponding pixel position on an array substrate through a Fine Metal Mask (FMM) by using an evaporation deposition technique using an organic material. Because the organic luminescent materials of the red, green and blue three primary color luminescent sub-pixels are different, in the manufacturing process, three different organic materials are respectively evaporated on the red, green and blue three primary color luminescent sub-pixels at corresponding positions through an FMM, and then the color mixing ratio of the combination of the three colors is adjusted to generate a true color. Thus, the three sub-pixels of red, green and blue emit light independently to form a pixel unit.
However, in the OLED display device, the blue sub-pixel is made of a fluorescent material, and the red sub-pixel and the green sub-pixel are made of phosphorescent materials, and the emission lifetime of the OLED display device is limited by the materials, that is, the red sub-pixel is longer than that of the green sub-pixel, and the red sub-pixel and the green sub-pixel are both far longer than that of the blue sub-pixel, so the service lives of the three sub-pixels are not balanced.
The existing pixel arrangement is not beneficial to the balance of the current material life, and along with the development of a display panel to high resolution, how to perform pixel arrangement can improve the resolution and balance the material life is a technical problem to be solved by a person skilled in the art.
Disclosure of Invention
The invention provides a pixel structure and a display device, and aims to improve the resolution of the display device.
It is another object of the invention to equalize the sub-pixels with different material lifetimes.
In order to achieve the above object, the present invention provides a pixel structure, including a plurality of repeating units arranged in an array, each repeating unit includes a plurality of sub-pixels having three colors, one of the sub-pixels having one color, and two of the sub-pixels having the other two colors, respectively, and the sub-pixels having the brightness higher than that of the other two sub-pixels are respectively located at two sides of the sub-pixel having the one color, and one of the sub-pixels having the brightness higher than that of the other two sub-pixels is divided into two sub-pixels.
Optionally, the plurality of sub-pixels include a first sub-pixel, two second sub-pixels and two third sub-pixels, the first sub-pixel is located in the middle, and the second sub-pixel and the third sub-pixel are respectively located at two sides of the first sub-pixel.
Optionally, the second sub-pixel is divided into two sub-pixels, and the first sub-pixel is shared by the second sub-pixel and the third sub-pixel on two sides, respectively, to form two pixel unit groups; in each pixel unit group, the first sub-pixel and the third sub-pixel are shared by two sub-pixels separated from the second sub-pixel to form two pixel units.
Optionally, the first sub-pixel and the third sub-pixel are red sub-pixels or blue sub-pixels, and the second sub-pixel is a green sub-pixel.
Optionally, the first sub-pixel is divided into two sub-pixels, and the two sub-pixels divided by the first sub-pixel, the second sub-pixel and the third sub-pixel form two pixel units.
Optionally, the first sub-pixel is a green sub-pixel, and the second sub-pixel and the third sub-pixel are red sub-pixels or blue sub-pixels.
Optionally, the two separated sub-pixels are simultaneously formed by evaporation through one opening of the evaporation mask plate.
Optionally, a plurality of sub-pixels in the repeating unit are arranged along a first direction, and repeating units adjacent to each other in a second direction are arranged in a staggered manner in the first direction; wherein,
the first direction is a row direction, the second direction is a column direction, the repeating units in the odd-numbered rows are aligned with each other, the repeating units in the even-numbered rows are aligned with each other, and the repeating units in the even-numbered rows and the repeating units in the odd-numbered rows are arranged in a staggered manner in the row direction;
the first direction is a column direction, the second direction is a row direction, the repeating units of the odd-numbered columns are aligned with each other, the repeating units of the even-numbered columns are aligned with each other, and the repeating units of the even-numbered columns and the repeating units of the odd-numbered columns are arranged in a staggered manner in the column direction.
Optionally, in two adjacent repeating units in the second direction, a pixel unit in one repeating unit is used for realizing left-eye display, and a pixel unit in the other repeating unit is used for realizing right-eye display.
Correspondingly, the invention also provides a display device which comprises the pixel structure.
Compared with the prior art, the pixel structure and the display device provided by the invention have the following beneficial effects:
1. the pixel structure comprises a plurality of repeating units which are arranged in an array, each repeating unit comprises a plurality of sub-pixels with three colors, one sub-pixel with one color is provided, the other two sub-pixels with two colors are respectively arranged at two sides of the sub-pixel with one color, and the middle sub-pixel and the two sub-pixels at the two sides form two pixel units respectively, so that the sharing of the sub-pixels is realized, and the improvement of the resolution of the display device is facilitated; in addition, among the sub-Pixels with three colors, the sub-pixel with the maximum brightness is divided into two sub-Pixels, so that the number of the sub-Pixels with the maximum brightness is increased, the PPI (Pixel Per Inc) is increased, the resolution of the display device is further improved, meanwhile, the two divided sub-Pixels can be evaporated by adopting the same opening of the evaporation mask plate, and the difficulty of the manufacturing process and the evaporation process of the evaporation mask plate can be reduced;
2. when the first sub-pixel is a red sub-pixel or a blue sub-pixel, the sub-pixels with longer service life are shared, so that the sub-pixels with different material service lives are balanced, and the service life of the display device is prolonged;
3. the adjacent repeating units in the second direction are arranged in a staggered mode in the first direction, so that the pixel arrangement is more uniform, and the display effect of the display device is improved;
4. in two adjacent pixel unit groups in the second direction, the pixel unit in one pixel unit group is used for realizing left-eye display and the pixel unit in the other pixel unit group is used for realizing right-eye display through time-sharing control, so that the display device comprising the pixel structure can also be used for realizing VR (virtual reality) and 3D (three-dimensional) display.
Drawings
Fig. 1 is a schematic structural diagram of a pixel structure according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating the division of the repeating units according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a pixel structure according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the division of the repeating units according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a pixel structure according to a third embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating the division of the repeating units according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a pixel structure according to a fourth embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating the division of the repeating units according to a fourth embodiment of the present invention;
FIGS. 9a to 9d are schematic structural diagrams of two adjacent repeat units provided in the fifth embodiment of the present invention;
fig. 10a to 10d are schematic structural diagrams of two adjacent repeating units provided in the fifth embodiment of the present invention.
Detailed Description
In order to make the contents of the present invention more clearly understood, the contents of the present invention will be further described with reference to the accompanying drawings. The invention is of course not limited to this particular embodiment, and general alternatives known to those skilled in the art are also covered by the scope of the invention.
The present invention is described in detail with reference to the drawings, and for convenience of explanation, the drawings are not enlarged partially according to the general scale, and should not be construed as limiting the present invention.
The invention provides a pixel structure, which comprises a plurality of repeating units arranged in an array, wherein each repeating unit comprises a plurality of sub-pixels with three colors, one sub-pixel with one color is provided, two sub-pixels with the other two colors are respectively provided and are respectively positioned at two sides of the sub-pixel with the one color, and one sub-pixel with the brightness larger than the other two sub-pixels in the sub-pixels with the three colors is divided into two sub-pixels in a second direction.
Preferably, the plurality of sub-pixels include a first sub-pixel, two second sub-pixels and two third sub-pixels, the first sub-pixel is located in the middle, and the second sub-pixel and the third sub-pixel are respectively located at two sides of the first sub-pixel.
More preferably, the plurality of sub-pixels in the repeating unit are arranged in the first direction, the repeating units adjacent in the second direction are arranged with a shift in the first direction, and the sub-pixel having the largest luminance among the sub-pixels of the three colors is divided into two sub-pixels in the second direction. Of course, the sub-pixel may also be divided into two sub-pixels in the first direction.
In the invention, the first sub-pixel is positioned in the middle, the second sub-pixel and the third sub-pixel are respectively positioned at two sides of the first sub-pixel, and the first sub-pixel and the second sub-pixel and the third sub-pixel at two sides respectively form two pixel units, so that the sharing of the sub-pixels is realized, and the improvement of the resolution of the display device is facilitated; in addition, one sub-pixel with the brightness larger than the other two sub-Pixels in the three sub-Pixels is separated into two sub-Pixels, so that the number of the sub-Pixels with the highest brightness is increased, the PPI (Pixel Per Inc) is increased, the resolution of the display device is further improved, meanwhile, the two separated sub-Pixels can be evaporated by adopting the same opening of the evaporation mask plate, and the difficulty of the manufacturing process and the evaporation process of the evaporation mask plate can be reduced.
The following describes the pixel structure and the display device provided by the present invention in further detail with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic structural diagram of a pixel structure according to an embodiment of the present invention. For simplicity, only a part of the pixel structure is shown in the drawings, the number of pixels in an actual product is not limited thereto, and the number of pixel units can be changed correspondingly according to actual display requirements.
As shown in fig. 1, the present invention provides a pixel structure, including a plurality of repeating units 10 arranged in a matrix, the repeating units 10 being repeatedly arranged along a first direction and a second direction, each repeating unit 10 including a first sub-pixel 101, two second sub-pixels 102, and two third sub-pixels 103 arranged along the first direction, the first sub-pixel 101 being located in the middle, the second sub-pixel 102 and the third sub-pixels 103 being located on both sides of the first sub-pixel 101, respectively, and one of the three sub-pixels having a luminance greater than the remaining two sub-pixels being divided into two sub-pixels in the second direction.
Preferably, the first direction is perpendicular to the second direction. In this embodiment, as shown in fig. 1, the first direction is a row direction (X direction), and the second direction is a column direction (Y direction).
In the present embodiment, the repeating unit 10 includes a second sub-pixel 102, a third sub-pixel 103, a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103, which are sequentially arranged along the first direction (X direction), the first sub-pixel 101 is respectively shared by the second sub-pixel 102 and the third sub-pixel 103 on two sides to form two pixel unit groups, as shown in fig. 2, the first sub-pixel 101 forms a first pixel unit group P10 with the second sub-pixel 102 and the third sub-pixel 103 on one side (for example, on the left side in fig. 2), and the first sub-pixel 101 forms a second pixel unit group P20 with the second sub-pixel 102 and the third sub-pixel 103 on the other side (for example, on the right side in fig. 2).
The second sub-pixel 102 is divided into two sub-pixels in the second direction (Y direction), and in the first pixel unit P10, the first sub-pixel 101 and the third sub-pixel 103 are shared by the two sub-pixels divided from the second sub-pixel 102 to form two pixel units, specifically, the first sub-pixel 101 and the third sub-pixel 103 and one sub-pixel (for example, the upper side in fig. 2) divided from the second sub-pixel 102 form a first pixel unit P11, and the first sub-pixel 101 and the third sub-pixel 103 and another sub-pixel (for example, the lower side in fig. 2) divided from the second sub-pixel 102 form a second pixel unit P12. Accordingly, in the second pixel unit P20, the first sub-pixel 101, the third sub-pixel 103 and one of the sub-pixels (e.g., the upper side in fig. 2) separated from the second sub-pixel 102 constitute a third pixel unit P21, and the first sub-pixel 101, the third sub-pixel 103 and another of the sub-pixels (e.g., the lower side in fig. 2) separated from the second sub-pixel 102 constitute a fourth pixel unit P22.
In the present embodiment, four pixel units are formed in each repeating unit 10, and the first sub-pixel 101 is shared four times and the third sub-pixel 103 is shared twice. The sharing of the sub-pixels enables more pixel units to be formed in the same area, and is beneficial to improving the resolution of the display device. Optionally, the first sub-pixel 101 may be divided into two or four sub-pixels, each of the two divided sub-pixels shares twice, or each of the four divided sub-pixels and the remaining sub-pixels form a pixel unit, or the third sub-pixel 103 may be divided into two sub-pixels, each of the sub-pixels and the remaining sub-pixels form a pixel unit, or the first sub-pixel 101 and the third sub-pixel 103 may also be divided at the same time, so that the same opening of the evaporation mask may be used to evaporate two or four divided sub-pixels, which may reduce the difficulty of the manufacturing process and the evaporation process of the evaporation mask.
In this embodiment, the first sub-pixel 101 is a red sub-pixel, the second sub-pixel 102 is a green sub-pixel, and the third sub-pixel 103 is a blue sub-pixel, and each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, so that full color display in a real sense can be realized. Moreover, because the red sub-pixel has the longest service life, the red sub-pixel is shared four times, the red sub-pixel can be used to the maximum extent, the green sub-pixel is brightest, the green sub-pixel is divided into two sub-pixels, the brightness of the display device cannot be influenced, in addition, when the PPI is calculated, the PPI is calculated by the brightest sub-pixel (the green sub-pixel), the PPI is increased, the resolution ratio of the display device is further improved, meanwhile, the two divided sub-pixels can be simultaneously evaporated by adopting the same opening of the evaporation mask plate, and the difficulty of the manufacturing process and the evaporation process of the evaporation mask plate can be reduced.
In other embodiments, the first sub-pixel 101 may be a blue sub-pixel, the second sub-pixel 102 may be a green sub-pixel, and the third sub-pixel 103 may be a red sub-pixel. Thus, the blue sub-pixel is shared four times and the red sub-pixel is shared twice. The blue sub-pixel and the red sub-pixel may be separated according to the number of times of sharing.
In this embodiment, preferably, the first sub-pixel 101 and the third sub-pixel 103 have the same shape and area, and can be formed by vapor deposition using the same vapor deposition mask, so as to save the manufacturing cost of the mask. Of course, the shape and area of the first sub-pixel 101 and the third sub-pixel 103 may also be different, for example, the shape is the same, the area is different, or the shape is different, the area is the same, or the shape and the area are different.
More preferably, the first sub-pixel 101 and the third sub-pixel 103 are rectangular or square, and the second sub-pixel 102 is divided into two sub-pixels: the first green sub-pixel 1021 and the second green sub-pixel 1022 are rectangular, and the long side direction of the first green sub-pixel 1021 and the second green sub-pixel 1022 is parallel to the first direction, and the short side direction is parallel to the second direction. For example, the first subpixel 101 and the third subpixel 103 are square, and the length of the long side of the first green slave subpixel 1021 and the length of the second green slave subpixel 1022 are 2 times the length of the short side. However, it should be understood that the shapes of the first sub-pixel 101, the second sub-pixel 102 and the third sub-pixel 103 are not limited to a rectangle, and may be quadrangles other than a rectangle, or one or any combination of polygons such as a triangle, a pentagon, a hexagon, an octagon, etc., and the shape and/or area of each sub-pixel may be adjusted according to the color matching requirement.
Each sub-pixel includes a light emitting region (display region) and a non-light emitting region (non-display region), and the light emitting region of each sub-pixel includes a cathode, an anode, and an electroluminescent layer (organic light emitting layer) between the cathode and the anode for generating light of a predetermined color to realize display. It is generally necessary to form electroluminescent layers of corresponding colors (e.g., red, green, or blue) in the light-emitting regions of the pixel regions of corresponding colors by using a three-layer evaporation process. When the shapes and areas of the first sub-pixel 101 and the third sub-pixel 103 are the same, the same mask plate can be used to form red and blue electroluminescent layers, so that only two mask plates need to be manufactured, and the manufacturing cost of the mask plates is saved.
Preferably, the repeating units 10 adjacent to each other in the second direction are arranged in a staggered manner in the first direction, specifically, the repeating units 10 in the odd-numbered rows are aligned with each other, that is, the repeating units 10 in the odd-numbered rows are arranged in the same manner, the repeating units 10 in the even-numbered rows are aligned with each other, that is, the repeating units 10 in the even-numbered rows are arranged in the same manner, and the repeating units 10 in the even-numbered rows are arranged in a staggered manner in the row direction with the repeating units 10 in the odd-numbered rows.
Preferably, the repeating unit 10 of the even row is shifted from the repeating unit 10 of the odd row by a distance of at least one sub-pixel in the row direction, in this embodiment, by a distance of at least one green sub-pixel. As shown in fig. 1, a distance H between a leftmost green sub-pixel of the odd-numbered column and a leftmost green sub-pixel of the even-numbered column includes a length of the green sub-pixel in the first direction and also includes a partial gap between the green sub-pixel and the blue sub-pixel in the odd-numbered row. The repeating units 10 in the even-numbered rows and the repeating units 10 in the odd-numbered rows are arranged in a staggered manner in the row direction, so that the pixel arrangement is more uniform, and the display effect of the display device is improved.
It should be noted that two adjacent repeating units in the second direction may also be controlled by timing, so that the pixel unit in one repeating unit realizes left-eye display, and the pixel unit in the other repeating unit realizes right-eye display, thereby enabling the pixel structure to be applied to VR and 3D display technologies. Alternatively, in one repeating unit, the first pixel cell group P10 may be controlled to realize left-eye display, and the second pixel cell group P20 may realize right-eye display, or in the first pixel cell group P10, the first pixel cell P11 may be controlled to realize left-eye display, and the second pixel cell P12 may be controlled to realize right-eye display, so that the pixel structure may be applied to VR and 3D display technologies.
It is understood that, in another embodiment of the present invention, the first direction may be a column direction (e.g., a Y direction in fig. 1), and the second direction may be a row direction (e.g., an X direction in fig. 1), so that the schematic structure diagram of the pixel structure described in fig. 1 needs to be adjusted to obtain the pixel structure described in this embodiment, which is similar to the pixel structure described above and is not repeated herein.
Example two
Fig. 3 is a schematic structural diagram of a pixel structure according to a second embodiment of the present invention. As shown in fig. 3, the present invention provides a pixel structure, including a plurality of repeating units 10 arranged in a matrix, the repeating units 10 being repeatedly arranged along a first direction and a second direction, each repeating unit 10 including a first sub-pixel 101, two second sub-pixels 102, and two third sub-pixels 103 arranged along the first direction, the first sub-pixel 101 being located in the middle, the second sub-pixel 102 and the third sub-pixels 103 being located on both sides of the first sub-pixel 101, respectively, and one of the three sub-pixels having a luminance greater than the remaining two sub-pixels being divided into two sub-pixels in the second direction.
The difference between the present embodiment and the first embodiment is that, in the present embodiment, the repeating unit 10 includes a third sub-pixel 103, a second sub-pixel 102, a first sub-pixel 101, a third sub-pixel 103, and a second sub-pixel 102, which are sequentially arranged along the first direction.
In the present embodiment, the repeating unit 10 includes a third sub-pixel 103, a second sub-pixel 102, a first sub-pixel 101, a third sub-pixel 103, and a second sub-pixel 102 sequentially arranged along the first direction (X direction), the first sub-pixel 101 is respectively shared by the second sub-pixel 102 and the third sub-pixel 103 on two sides to form two pixel unit groups, as shown in fig. 4, the first sub-pixel 101 forms a first pixel unit group P10 with the second sub-pixel 102 and the third sub-pixel 103 on one side (for example, on the left side in fig. 4), and the first sub-pixel 101 forms a second pixel unit group P20 with the second sub-pixel 102 and the third sub-pixel 103 on the other side (for example, on the right side in fig. 4).
The second sub-pixel 102 is divided into two sub-pixels in the second direction (Y direction), in the first pixel unit P10, the first sub-pixel 101 and the third sub-pixel 103 are shared by the two sub-pixels divided from the second sub-pixel 102 to form two pixel units, specifically, the first sub-pixel 101 and the third sub-pixel 103 and one sub-pixel (for example, the upper side in fig. 4) divided from the second sub-pixel 102 form a first pixel unit P11, and the first sub-pixel 101 and the third sub-pixel 103 and another sub-pixel (for example, the lower side in fig. 4) divided from the second sub-pixel 102 form a second pixel unit P12. Accordingly, in the second pixel unit P20, the first sub-pixel 101, the third sub-pixel 103 and one of the sub-pixels (e.g., the upper side in fig. 4) separated from the second sub-pixel 102 constitute a third pixel unit P21, and the first sub-pixel 101, the third sub-pixel 103 and another of the sub-pixels (e.g., the lower side in fig. 4) separated from the second sub-pixel 102 constitute a fourth pixel unit P22.
In the present embodiment, the repeating unit 10 of the even-numbered row is shifted from the repeating unit 10 of the odd-numbered row by a distance of at least one blue subpixel in the row direction. As shown in fig. 3, a distance H between a leftmost blue sub-pixel of the odd-numbered column and a leftmost blue sub-pixel of the even-numbered column includes a length of the blue sub-pixel in the first direction and also includes a partial gap between the blue sub-pixel and the green sub-pixel in the odd-numbered row. The repeating units 10 in the even-numbered rows and the repeating units 10 in the odd-numbered rows are arranged in a staggered manner in the row direction, so that the pixel arrangement is more uniform, and the display effect of the display device is improved.
It is understood that, in another embodiment of the present invention, the first direction may be a column direction (e.g., a Y direction in fig. 3), and the second direction may be a row direction (e.g., an X direction in fig. 3), so that the schematic structure diagram of the pixel structure illustrated in fig. 3 needs to be adjusted to obtain the pixel structure illustrated in this embodiment, which is similar to the pixel structure described above, and thus, the description of this embodiment is omitted here.
EXAMPLE III
Fig. 5 is a schematic structural diagram of a pixel structure according to a third embodiment of the present invention. For simplicity, only a part of the pixel structure is shown in the drawings, the number of pixels in an actual product is not limited thereto, and the number of pixel units can be changed correspondingly according to actual display requirements.
As shown in fig. 5, the present invention provides a pixel structure, including a plurality of repeating units 10 arranged in a matrix form, the repeating units 10 being repeatedly arranged in a first direction and a second direction, each repeating unit 10 including three sub-pixels arranged in the first direction and having different colors, wherein the repeating unit 10 includes one first sub-pixel 101, two second sub-pixels 102, and two third sub-pixels 103, the first sub-pixel 101 is located in the middle, the second sub-pixel 102 and the third sub-pixels 103 are respectively located on both sides of the first sub-pixel 101, and one of the three sub-pixels having a luminance greater than that of the remaining two sub-pixels is divided into two sub-pixels in the second direction.
The difference between this embodiment and the first embodiment is that, in this embodiment, the first sub-pixel 101 is a green sub-pixel, the second sub-pixel 102 is a red sub-pixel, and the third sub-pixel 103 is a blue sub-pixel.
In this embodiment, the repeating unit 10 includes a second sub-pixel 102, a third sub-pixel 103, a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103 sequentially arranged along a first direction (X direction), the first sub-pixel 101 is divided into two sub-pixels in the second direction (Y direction), and the two sub-pixels divided by the first sub-pixel 101, the second sub-pixel 102, and the third sub-pixel 103 constitute two pixel units. Specifically, the second sub-pixel 102, the third sub-pixel 103 and one of the sub-pixels (e.g., the upper side in fig. 6) separated from the first sub-pixel 101 constitute a first pixel unit P11, and the second sub-pixel 102, the third sub-pixel 103 and another of the sub-pixels (e.g., the lower side in fig. 6) separated from the first sub-pixel 101 constitute a second pixel unit P12.
In this embodiment, the first sub-pixel 101 is a green sub-pixel, the second sub-pixel 102 is a red sub-pixel, the third sub-pixel 103 is a blue sub-pixel, and each pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, so that full color display in a real sense can be realized. Moreover, the green sub-pixel is brightest, the green sub-pixel is divided into two sub-pixels, the brightness of the display device is not affected, the PPI is calculated by the brightest sub-pixel (green sub-pixel), the number of the green sub-pixels is increased, the PPI is increased, the resolution of the display device is further improved, meanwhile, the two divided sub-pixels can be simultaneously evaporated by adopting the same opening of the evaporation mask plate, and the difficulty of the manufacturing process and the evaporation process of the evaporation mask plate can be reduced.
In other embodiments, the first sub-pixel 101 is a green sub-pixel, the second sub-pixel 102 may be a blue sub-pixel, and the third sub-pixel 103 may be a red sub-pixel.
In this embodiment, preferably, the second sub-pixel 102 and the third sub-pixel 103 have the same shape and area, and can be formed by vapor deposition using the same vapor deposition mask, so as to save the manufacturing cost of the mask. Of course, the shapes and areas of the second sub-pixel 102 and the third sub-pixel 103 may be different, for example, the shapes and areas are the same, or the shapes and areas are different, or the areas and the areas are different.
More preferably, the second sub-pixel 102 and the third sub-pixel 103 are rectangular or square in shape, and the first sub-pixel 101 is divided into two sub-pixels: the first green sub-pixel 1021 and the second green sub-pixel 1022 are rectangular, and the long side direction of the first green sub-pixel 1021 and the second green sub-pixel 1022 is parallel to the first direction, and the short side direction is parallel to the second direction. For example, the first subpixel 101 and the third subpixel 103 are square, and the length of the long side of the first green slave subpixel 1021 and the length of the second green slave subpixel 1022 are 2 times the length of the short side. However, it should be understood that the shapes of the first sub-pixel 101, the second sub-pixel 102 and the third sub-pixel 103 are not limited to a rectangle, and may be quadrangles other than a rectangle, or one or any combination of polygons such as a triangle, a pentagon, a hexagon, an octagon, etc., and the shape and/or area of each sub-pixel may be adjusted according to the color matching requirement.
Each sub-pixel includes a light emitting region (display region) and a non-light emitting region (non-display region), and the light emitting region of each sub-pixel includes a cathode, an anode, and an electroluminescent layer (organic light emitting layer) between the cathode and the anode for generating light of a predetermined color to realize display. It is generally necessary to form electroluminescent layers of corresponding colors (e.g., red, green, or blue) in the light-emitting regions of the pixel regions of corresponding colors by using a three-layer evaporation process. When the shapes and areas of the second sub-pixel 102 and the third sub-pixel 103 are the same, the same mask plate can be used to form red and blue electroluminescent layers, so that only two mask plates need to be manufactured, and the manufacturing cost of the mask plates is saved.
The repeating units 10 adjacent to each other in the second direction are arranged in a staggered manner in the first direction, specifically, the repeating units 10 in the odd-numbered rows are aligned with each other, that is, the repeating units 10 in the odd-numbered rows are arranged in the same manner, the repeating units 10 in the even-numbered rows are aligned with each other, that is, the repeating units 10 in the even-numbered rows are arranged in the same manner, and the repeating units 10 in the even-numbered rows and the repeating units 10 in the odd-numbered rows are arranged in a staggered manner in the row direction. Therefore, the pixel arrangement is more uniform, and the display effect of the display device is improved.
Preferably, the repeating unit 10 of the even-numbered row is shifted from the repeating unit 10 of the odd-numbered row by a distance of at least one sub-pixel in the row direction, in this embodiment, by a distance of at least one red sub-pixel. As shown in fig. 5, the distance H between the leftmost red sub-pixel in the odd-numbered column and the leftmost red sub-pixel in the even-numbered column includes the length of the red sub-pixel in the first direction and also includes a partial gap between the red sub-pixel and the green sub-pixel in the odd-numbered row.
It should be noted that two adjacent repeating units in the second direction may also be controlled by timing, so that the pixel unit in one repeating unit realizes left-eye display, and the pixel unit in the other repeating unit realizes right-eye display, thereby enabling the pixel structure to be applied to VR and 3D display technologies. Alternatively, in one repeating unit, the first pixel unit P11 may be controlled to realize left-eye display, and the second pixel unit P12 may realize right-eye display.
It is understood that, in another embodiment of the present invention, the first direction may be a column direction (e.g., a Y direction in fig. 5), and the second direction may be a row direction (e.g., an X direction in fig. 5), so that the schematic structure diagram of the pixel structure described in fig. 1 needs to be adjusted to obtain the pixel structure described in this embodiment, which is similar to the pixel structure described above and is not repeated herein.
Example four
Fig. 7 is a schematic structural diagram of a pixel structure according to a fourth embodiment of the present invention. As shown in fig. 7, the present invention provides a pixel structure, including a plurality of repeating units 10 arranged in a matrix, the repeating units 10 being repeatedly arranged in a first direction and a second direction, each repeating unit 10 including three sub-pixels arranged in the first direction and having different colors, wherein the repeating unit 10 includes one first sub-pixel 101, two second sub-pixels 102, and two third sub-pixels 103, the first sub-pixel 101 is located in the middle, the second sub-pixel 102 and the third sub-pixels 103 are respectively located on both sides of the first sub-pixel 101, and one of the three sub-pixels having a luminance greater than that of the remaining two sub-pixels is divided into two sub-pixels in the second direction.
The present embodiment is different from the third embodiment in that, in the present embodiment, the repeating unit 10 includes a third sub-pixel 103, a first sub-pixel 101, a second sub-pixel 102, a third sub-pixel 103, and a first sub-pixel 101, which are sequentially arranged along the first direction.
In this embodiment, the repeating unit 10 includes a third sub-pixel 103, a second sub-pixel 102, a first sub-pixel 101, a third sub-pixel 103, and a second sub-pixel 102 that are sequentially arranged along the first direction (X direction), and two sub-pixels separated from the first sub-pixel 101 and the second sub-pixel 102 and the third sub-pixel 103 on two sides form two pixel units, as shown in fig. 8. Specifically, the second sub-pixel 102, the third sub-pixel 103 and one of the sub-pixels (e.g., the upper side in fig. 8) separated from the first sub-pixel 101 constitute a first pixel unit P11, and the second sub-pixel 102, the third sub-pixel 103 and another of the sub-pixels (e.g., the lower side in fig. 8) separated from the first sub-pixel 101 constitute a second pixel unit P12.
In the present embodiment, the repeating unit 10 of the even-numbered row is shifted from the repeating unit 10 of the odd-numbered row by a distance of at least one blue subpixel in the row direction. As shown in fig. 7, a distance H between the leftmost blue sub-pixel of the odd-numbered column and the leftmost blue sub-pixel of the even-numbered column includes a length of the blue sub-pixel in the first direction and also includes a partial gap between the blue sub-pixel and the red sub-pixel in the odd-numbered row.
It is understood that, in another embodiment of the present invention, the first direction may be a column direction (e.g., a Y direction in fig. 7), and the second direction may be a row direction (e.g., an X direction in fig. 7), so that the schematic structure diagram of the pixel structure illustrated in fig. 3 needs to be adjusted to obtain the pixel structure illustrated in this embodiment, which is similar to the pixel structure described above, and thus, the description of this embodiment is omitted here.
EXAMPLE five
In the first to fourth embodiments, the two sub-pixels on both sides of the first sub-pixel are arranged in the same manner, and each repeating unit in each row is identical.
The present embodiment is different from the above four embodiments in that, in each repeating unit, the arrangement of two sub-pixels on both sides of the first sub-pixel may be different, and the arrangement of adjacent repeating units in the same row may also be different. For example:
for the pixel structures listed in the first and second embodiments, in the present embodiment, each repeating unit 10 may be arranged as: the second sub-pixel 102, the third sub-pixel 103, the first sub-pixel 101, the third sub-pixel 103 and the second sub-pixel 102 are arranged in the order of the green sub-pixel, the blue sub-pixel, the red sub-pixel, the blue sub-pixel and the green sub-pixel, as shown in fig. 9a, it can also be arranged as follows: the third sub-pixel 103, the second sub-pixel 102, the first sub-pixel 101, the second sub-pixel 102 and the third sub-pixel 103 are arranged in the order of the blue sub-pixel, the green sub-pixel, the red sub-pixel, the green sub-pixel and the blue sub-pixel, as shown in fig. 9 b. Such an arrangement causes the same sub-pixels in two adjacent repeating units 10 to be adjacent, and the same opening of the vapor deposition mask plate can be used to simultaneously vapor-deposit two sub-pixels. Of course, the arrangement of the pixels in two adjacent repeating units may also be changed to avoid the adjacent sub-pixels, as shown in fig. 9c, the arrangement of two adjacent repeating units 10 is: the first repeating unit 10 is arranged as a second sub-pixel 102, a third sub-pixel 103, a first sub-pixel 101, a third sub-pixel 103 and a second sub-pixel 102, and the second repeating unit is arranged as a third sub-pixel 103, a second sub-pixel 102, a first sub-pixel 101, a second sub-pixel 102 and a third sub-pixel 103. Alternatively, as shown in fig. 9d, the first repeating unit 10 is arranged as a third sub-pixel 103, a second sub-pixel 102, a first sub-pixel 101, a second sub-pixel 102 and a third sub-pixel 103, and the second repeating unit is arranged as a second sub-pixel 102, a third sub-pixel 103, a first sub-pixel 101, a third sub-pixel 103 and a second sub-pixel 102, in contrast to the arrangement described above.
It should be noted that, in the drawings of the present embodiment (for example, in fig. 9a to 9 d), only schematic structural diagrams of two adjacent repeating units are shown, and the pixel structure includes a plurality of repeating units arranged in an array.
For the pixel structures listed in the third and fourth embodiments, in the present embodiment, the arrangement of each repeating unit 10 may be: the second sub-pixel 102, the third sub-pixel 103, the first sub-pixel 101, the third sub-pixel 103 and the second sub-pixel 102 are arranged in the order of the red sub-pixel, the blue sub-pixel, the green sub-pixel, the blue sub-pixel and the red sub-pixel, as shown in fig. 10 a. Alternatively, each repeating unit 10 may be arranged in the manner: the third sub-pixel 103, the second sub-pixel 102, the first sub-pixel 101, the second sub-pixel 102 and the third sub-pixel 103 are arranged in the order of the blue sub-pixel, the red sub-pixel, the green sub-pixel, the red sub-pixel and the blue sub-pixel, as shown in fig. 10 b. Such an arrangement causes the same sub-pixels in two adjacent repeating units 10 to be adjacent, and the same opening of the vapor deposition mask plate can be used to simultaneously vapor-deposit two sub-pixels. Of course, the arrangement of the pixels in two adjacent repeating units may also be changed to avoid the adjacent sub-pixels, as shown in fig. 10c, the arrangement of two adjacent repeating units 10 is: the first repeating unit 10 is arranged as a second sub-pixel 102, a third sub-pixel 103, a first sub-pixel 101, a third sub-pixel 103 and a second sub-pixel 102, and the second repeating unit 10 is arranged as a third sub-pixel 103, a second sub-pixel 102, a first sub-pixel 101, a second sub-pixel 102 and a third sub-pixel 103, that is, two adjacent sub-pixels in the repeating unit are arranged in the order of a red sub-pixel, a blue sub-pixel, a green sub-pixel, a blue sub-pixel and a red sub-pixel, and a blue sub-pixel, a red sub-pixel, a green sub-pixel, a red sub-pixel and a blue sub-pixel. Of course, the front and back order of two adjacent repeating units may be changed, as shown in fig. 10d, in the two adjacent repeating units, the first repeating unit 10 is arranged as the third sub-pixel 103, the second sub-pixel 102, the first sub-pixel 101, the second sub-pixel 102 and the third sub-pixel 103, and the second repeating unit 10 is arranged as the first repeating unit 10 is arranged as the second sub-pixel 102, the third sub-pixel 103, the first sub-pixel 101, the third sub-pixel 103 and the second sub-pixel 102, that is, arranged in the order of the blue sub-pixel, the red sub-pixel, the green sub-pixel, the red sub-pixel and the blue sub-pixel, and the red sub-pixel, the blue sub-pixel, the green sub-pixel, the blue sub-pixel and the red sub-pixel.
EXAMPLE six
The present embodiment provides a display device, which can adopt the pixel structure described in any one of the first to fifth embodiments.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In summary, the pixel structure and the display device provided by the present invention include a plurality of repeating units arranged in an array, each repeating unit includes a plurality of sub-pixels with three colors, one sub-pixel with one color is provided, two sub-pixels with the other two colors are provided, and are respectively located at two sides of the sub-pixel with one color, and the sub-pixel located in the middle and the two sub-pixels at two sides respectively form two pixel units, so that the sharing of the sub-pixels is realized, and the improvement of the resolution of the display device is facilitated; in addition, among the sub-Pixels with three colors, the sub-pixel with the maximum brightness is divided into two sub-Pixels, so that the number of the sub-Pixels with the maximum brightness is increased, the PPI (Pixel Per Inc) is increased, the resolution of the display device is further improved, meanwhile, the two divided sub-Pixels can be evaporated by adopting the same opening of the evaporation mask plate, and the difficulty of the manufacturing process and the evaporation process of the evaporation mask plate can be reduced; when the first sub-pixel is a red sub-pixel or a blue sub-pixel, the sub-pixels with longer service life are shared, so that the sub-pixels with different material service lives are balanced, and the service life of the display device is prolonged; the adjacent repeating units in the second direction are arranged in a staggered mode in the first direction, so that the pixel arrangement is more uniform, and the display effect of the display device is improved; in two adjacent pixel unit groups in the second direction, the pixel unit in one pixel unit group is used for realizing left-eye display and the pixel unit in the other pixel unit group is used for realizing right-eye display through time-sharing control, so that the display device comprising the pixel structure can also be used for realizing VR (virtual reality) and 3D (three-dimensional) display.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims (10)

1. A pixel structure is characterized by comprising a plurality of repeating units which are arranged in an array, wherein each repeating unit is composed of a plurality of sub-pixels with three colors, one sub-pixel with one color is provided, two sub-pixels with the other two colors are respectively provided and are respectively positioned at two sides of the sub-pixel with the one color, and one sub-pixel with the brightness larger than the other two sub-pixels in the sub-pixels with the three colors is separated into two sub-pixels.
2. The pixel structure according to claim 1, wherein the plurality of sub-pixels includes a first sub-pixel, two second sub-pixels and two third sub-pixels, the first sub-pixel is located in the middle, and the second sub-pixel and the third sub-pixel are respectively located at two sides of the first sub-pixel.
3. The pixel structure according to claim 2, wherein the second sub-pixel is divided into two sub-pixels, and the first sub-pixel is shared by the second sub-pixel and the third sub-pixel on two sides to form two pixel unit groups; in each pixel unit group, the first sub-pixel and the third sub-pixel are shared by two sub-pixels separated from the second sub-pixel to form two pixel units.
4. The pixel structure of claim 3, wherein the first and third sub-pixels are red or blue sub-pixels, and the second sub-pixel is a green sub-pixel.
5. The pixel structure according to claim 2, wherein the first sub-pixel is divided into two sub-pixels, and the two sub-pixels divided by the first sub-pixel, the second sub-pixel and the third sub-pixel form two pixel units.
6. The pixel structure of claim 5, wherein the first sub-pixel is a green sub-pixel, and the second and third sub-pixels are red or blue sub-pixels.
7. The pixel structure according to any one of claims 1 to 6, wherein the two separated sub-pixels are simultaneously formed by evaporation through one opening of an evaporation mask plate.
8. The pixel structure according to claim 1, wherein the plurality of sub-pixels in the repeating unit are arranged in a first direction, and the repeating units adjacent in a second direction are arranged with a shift in the first direction; wherein,
the first direction is a row direction, the second direction is a column direction, the repeating units in the odd-numbered rows are aligned with each other, the repeating units in the even-numbered rows are aligned with each other, and the repeating units in the even-numbered rows and the repeating units in the odd-numbered rows are arranged in a staggered manner in the row direction;
the first direction is a column direction, the second direction is a row direction, the repeating units of the odd-numbered columns are aligned with each other, the repeating units of the even-numbered columns are aligned with each other, and the repeating units of the even-numbered columns and the repeating units of the odd-numbered columns are arranged in a staggered manner in the column direction.
9. The pixel structure according to claim 8, wherein, of two repeating units adjacent in the second direction, a pixel unit in one repeating unit is used for realizing left-eye display, and a pixel unit in the other repeating unit is used for realizing right-eye display.
10. A display device comprising the pixel structure according to any one of claims 1 to 9.
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