CN111769135A - Pixel structure, metal mask plate, display panel and AMOLED display device - Google Patents

Pixel structure, metal mask plate, display panel and AMOLED display device Download PDF

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CN111769135A
CN111769135A CN201910256367.2A CN201910256367A CN111769135A CN 111769135 A CN111769135 A CN 111769135A CN 201910256367 A CN201910256367 A CN 201910256367A CN 111769135 A CN111769135 A CN 111769135A
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pixel
sub
pixels
corner
row
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CN111769135B (en
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李晓凯
许正豪
陈凯凯
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EverDisplay Optronics Shanghai Co Ltd
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EverDisplay Optronics Shanghai Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
    • H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention provides a pixel structure, a metal mask plate, a display panel and an AMOLED display device. Wherein the pixel structure includes: a first pixel cell group and a second pixel cell group alternately arranged in a row direction, the first pixel cell group including a plurality of first pixel cells sequentially arranged in a column direction, the second pixel cell group including a plurality of second pixel cells sequentially arranged in the column direction, forming a matrix in which each row is alternated by the first pixel cells and the second pixel cells, and each column is alternated by the first pixel cell group and the second pixel cell group; the central connecting line of the first pixel unit of each row is parallel to the central connecting line of the second pixel unit, and the row spacing between the adjacent row pixel units is equal to the column spacing between the adjacent column pixel units. According to the invention, through the structure that the line spacing between adjacent line pixel units is equal to the column spacing between adjacent column pixel units, the image quality when a picture is displayed is improved, and the display dark stripes are eliminated.

Description

Pixel structure, metal mask plate, display panel and AMOLED display device
Technical Field
The invention relates to the technical field of display equipment, in particular to a pixel structure, a metal mask plate, a display panel and an AMOLED display device.
Background
In the development of AMOLED (Active-matrix Organic Light-Emitting Diode) devices, the most advanced and commonly used pixel arrangement is Real-type. Referring to fig. 1, in the Real pixel arrangement, three square sub-pixels are arranged in a triangle, and the three square sub-pixels are respectively a red (R) sub-pixel, a green (G) sub-pixel and a blue (B) sub-pixel.
In the Real pixel arrangement structure, the sub-pixels are sequentially arranged linearly in the horizontal direction, and the line spacing L1 of the pixel unit is generally the sum of the alignment precision of two sub-pixels; the arrangement of the sub-pixels in the vertical direction is staggered, which results in a greatly reduced column pitch of the pixel units, and the row pitch L1 of the pixel units is greater than the column pitch L2. When the AMOLED device displays a white picture, the display in the vertical direction is uniform, the display in the horizontal direction is linear, the line spacing in the horizontal direction is a dead angle of pixel display, and the brightness of the pixel is darkened relative to a normal area, so that the display of the white picture is dark, and the user experience is damaged.
It is to be noted that the information applied in the above background section is only for enhancing the understanding of the background of the present invention, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
In view of the above, the present invention provides a pixel structure, a metal mask for evaporating the pixel structure, a display panel using the pixel structure, and an AMOLED display device including the display panel, which are used to solve the problem of displaying dark fringes in the prior art.
According to an aspect of the present invention, there is provided a pixel structure, including: a first pixel cell group and a second pixel cell group alternately arranged in a row direction, the first pixel cell group including a plurality of first pixel cells sequentially arranged in a column direction, the second pixel cell group including a plurality of second pixel cells sequentially arranged in the column direction, forming a matrix in which each row is alternated by the first pixel cells and the second pixel cells, and each column is alternated by the first pixel cell group and the second pixel cell group; the central connecting line of the first pixel unit of each row is parallel to the central connecting line of the second pixel unit, and the row spacing between the adjacent row pixel units is equal to the column spacing between the adjacent column pixel units.
Preferably, in the above pixel structure, each pixel unit includes three sub-pixels with different colors, the three sub-pixels in the first pixel unit are arranged in a delta shape, the three sub-pixels in the second pixel unit are arranged in an inverted delta shape, and a structure of the first pixel unit after being inverted in the row direction is the same as that of the second pixel unit.
Preferably, in the above pixel structure, two corner cuts are respectively formed at the side away from each other of the two side-by-side sub-pixels in each pixel unit, so that the corner cut sub-pixels in each pixel unit form a corner cut region exceeding the region where the non-corner cut sub-pixels are located in the column direction; the corner cutting area of each first pixel unit fills a vacant area formed by the corner cutting between two adjacent second pixel units of adjacent columns, and the corner cutting area of each second pixel unit fills a vacant area formed by the corner cutting between two adjacent first pixel units of adjacent columns.
Preferably, in the above-mentioned pixel structure, in the corner-cut sub-pixels, the corner-cut region is a trapezoidal region, an oblique side of the trapezoidal region is a tangent line of the corner-cut, a length of a top side of the trapezoidal region is equal to a height of the non-corner-cut sub-pixels along the column direction, and a length of a bottom side of the trapezoidal region is equal to a height of the corner-cut sub-pixels along the column direction.
Preferably, in the above pixel structure, each sub-pixel includes a pixel region and a frame region surrounding the pixel region, the pixel region and the frame region of each sub-pixel have the same shape, and the frame regions of the sub-pixels are tangent; and the row pitch and the column pitch are pitches between pixel regions of the sub-pixels.
Preferably, in the above-mentioned pixel structure, the row pitch and the column pitch are both positive, zero or negative values.
Preferably, in the above pixel structure, the cut angles of the sub-pixels in each pixel unit are all 45 °, and the cut angles have the same size.
Preferably, in the pixel structure, the corner cutting area of the sub-pixel in each pixel unit occupies 1/6-1/4 of the area of the sub-pixel.
According to another aspect of the present invention, a metal mask is provided for evaporating a sub-pixel of one color in the pixel structure, where the metal mask has a plurality of openings, each opening corresponds to a sub-pixel of the one color, and the openings coincide with a frame region of the sub-pixels.
Preferably, in the metal mask plate, a distance between a frame region and a pixel region of a sub-pixel is alignment accuracy when the sub-pixel is evaporated by using the metal mask plate.
According to another aspect of the present invention, a display panel is provided, wherein the display panel adopts the pixel structure.
According to another aspect of the present invention, there is provided an AMOLED display device including the display panel described above.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the design that the central connecting line of the first pixel unit of each row is parallel to the central connecting line of the second pixel unit, the pixel units of each row are in an embedded structure, so that the row spacing between the adjacent row pixel units is reduced, the row spacing between the adjacent row pixel units is equal to the column spacing between the adjacent column pixel units, and the problem of displaying dark stripes is solved;
the corner cutting areas of the two sub-pixels in each pixel unit are filled in the vacant areas between the two pixel units in the adjacent rows through the respective corner cutting of the two sub-pixels on the opposite sides, so that the pixel units in each row are in an embedded structure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram showing a pixel arrangement structure in the related art;
FIGS. 2 to 5 are schematic diagrams respectively illustrating pixel structures in different embodiments of the present invention;
fig. 6 shows a signal connection diagram of a pixel structure in an embodiment of the invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 2 and 3 are schematic diagrams showing the pixel structure in the embodiment of the present invention. Referring to fig. 2 and 3, in some embodiments, the pixel structure of the present invention comprises:
the first pixel unit group 1 includes a plurality of first pixel units 10 sequentially arranged in a column direction (i.e., a vertical direction in the figure), and the second pixel unit group 2 includes a plurality of second pixel units 20 sequentially arranged in the column direction. The entire pixel structure forms a matrix in which each row is alternated by the first pixel unit 10 and the second pixel unit 20, and each column is alternated by the first pixel unit group 1 and the second pixel unit group 2.
Wherein the central connecting line Y-Y 'of the first pixel unit 10 of each row is parallel to the central connecting line X-X' of the second pixel unit 20. Wherein, the dots O on the central connecting line Y-Y1Is a dot at the center of each first pixel unit 10 and the center is connected to the line X-XO2Is the center of the second pixel cell 20. That is, the first pixel unit 10 and the second pixel unit 20 in each row are not in a straight line, but have a staggered structure of wave-shaped one-high-low. In this way, the first pixel unit 10 and the second pixel unit 20 between different rows can be in a nested structure, the row spacing between the pixel units in adjacent rows is reduced, and the row spacing D1 between the pixel units in adjacent rows is equal to the column spacing D2 between the pixel units in adjacent columns. Therefore, when the pixel structure displays a white picture, dark stripes cannot be displayed due to different line pitches and column pitches among the pixel units.
Further, each pixel unit includes three sub-pixels with different colors, the three sub-pixels in the first pixel unit 10 are arranged in a delta shape, the three sub-pixels in the second pixel unit 20 are arranged in an inverted delta shape, and the structure of the first pixel unit 10 after being inverted along the row direction is the same as that of the second pixel unit 20, that is, the structure of the first pixel unit after being horizontally inverted by 180 ° is the same as that of the second pixel unit 20. The delta arrangement means that the connecting lines of the centers of the three sub-pixels of each pixel unit are triangular, and in a preferred embodiment, the connecting lines can be equilateral triangles. Three sub-pixels having different colors from each other in each pixel unit are respectively selected from a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B). In the figure, the first sub-pixel 11 is a green sub-pixel (G) and is arranged on the left side of the first pixel unit 10 of the delta shape, the second sub-pixel 12 is a blue sub-pixel (B) and is arranged on the right side of the first pixel unit 10 of the delta shape, and the third sub-pixel 13 is a red sub-pixel (R) and is arranged on the upper side of the first pixel unit 10 of the delta shape. In other embodiments, R, G, B three sub-pixels may adopt other delta arrangement structures, and the first sub-pixel 11 may also be a red sub-pixel or a blue sub-pixel, and accordingly, the second sub-pixel 12 and the third sub-pixel 13 are also changed accordingly, and the first, second and third sub-pixels are not used to define specific colors, as long as three sub-pixels including a red sub-pixel, a green sub-pixel and a blue sub-pixel are included in one pixel unit.
In a specific embodiment, the structure that the pixel units are embedded in the row direction is realized by cutting the corners of the two sub-pixels in each pixel unit on the sides which are away from each other. In a preferred embodiment, the two sub-pixels of each pixel unit are chamfered, so that the pixel units are arranged more closely after being chamfered. With reference to the pixel structures shown in fig. 3 and fig. 4, the first sub-pixel (G)11 and the second sub-pixel (B)12 in each pixel unit are respectively provided with two cut corners at the sides facing away from each other, wherein the first sub-pixel 11 is provided with two cut corners 111 and 112 at the side facing away from the second sub-pixel 12, and the second sub-pixel 12 is provided with two cut corners 121 and 122 at the side facing away from the first sub-pixel 11. For convenience of description, taking the direction as an example, the corner cut 111 at the upper left corner of the first sub-pixel 11 is referred to as a first corner cut 111, the corner cut 112 at the lower left corner of the first sub-pixel 11 is referred to as a second corner cut 112, the corner cut 121 at the upper right corner of the second sub-pixel 12 is referred to as a third corner cut 121, and the corner cut 122 at the lower right corner of the second sub-pixel 12 is referred to as a fourth corner cut 122. Thus, two cutting angles are respectively arranged on the opposite sides of the first sub-pixel 11 and the second sub-pixel 12 which are arranged side by side in each pixel unit, so that the sub-pixels of the cutting angles in each pixel unit form a cutting angle area which exceeds the area where the sub-pixels without cutting angles are located in the column direction, namely, the first sub-pixel 11 of the cutting angles in the first pixel unit 10 marked in the figure has a cutting angle area 1101 which exceeds the area where the third sub-pixel 13 without cutting angles is located, the second sub-pixel 12 of the cutting angles has a cutting angle area 1201 which exceeds the area where the third sub-pixel 13 without cutting angles is located, the first sub-pixel 11 of the cutting angles in the second pixel unit 20 has a cutting angle area 2101 which exceeds the area where the third sub-pixel 13 without cutting angles is located, and the second sub-pixel 12 of the cutting angles has a cutting angle area 2201 which exceeds the area where the third sub-pixel 13 without cutting angles is located.
In other embodiments, the first sub-pixel 11 and the third sub-pixel (R)13 may be provided with two cut angles on the side facing away, or the second sub-pixel 12 and the third sub-pixel 13 may be provided with two cut angles on the side facing away. That is, the present invention does not limit the color and position of the two sub-pixels of the corner cut, and they may be a combination of any two sub-pixels among R, G, B three-color sub-pixels. The shape of the sub-pixel is not limited to the square shape shown in the figure, and the R, G, B three-color sub-pixel may be a circle, a triangle, a square, a diamond, a trapezoid, a hexagon, an octagon, or even a special shape.
Further, two cut angles of the first sub-pixel 11 in any pixel unit are respectively opposite to the cut angles of the second sub-pixels 12 of two adjacent pixel units in a pixel unit group of an adjacent column of the pixel unit. Taking the pixel unit 20 marked in fig. 4 as an example, the first corner 111 of the first sub-pixel 11 in the pixel unit 20 is opposite to the fourth corner 122 of the second sub-pixel 12 of the upper-left adjacent pixel unit 10 in the left-adjacent group of pixel units 1, and the second corner 112 of the first sub-pixel 11 in the pixel unit 20 is opposite to the third corner 121 of the second sub-pixel 12 of the lower-left adjacent pixel unit 10 in the left-adjacent group of pixel units 1.
Further, except for the opposite corner cuts, the corner cut region of each first pixel unit 10 fills a vacant region formed by the corner cuts between two adjacent second pixel units 20 of adjacent columns, and the corner cut region of each second pixel unit 20 fills a vacant region formed by the corner cuts between two adjacent first pixel units 10 of adjacent columns. As shown in fig. 3, a corner cut region 1201 of the first pixel unit 10 and a corner cut region 2101 of the second pixel unit 20 are shown in bold dashed lines as an example. The corner cut region 1201 of the second sub-pixel 12 in the first pixel cell 10 fills the vacant region between two adjacent diagonal-hatched second pixel cells 20 in the right-side adjacent column of the first pixel cell 10. The corner cut region 2101 of the first subpixel 11 in the second pixel cell 20 fills the void region between two adjacent first pixel cells 10 shaded with a beat-point in the left-hand adjacent column of the second pixel cell 20. In this way, the corner of the sub-pixel is provided with the chamfer, and the chamfer area of the pixel unit fills the vacant area of the pixel units in the adjacent columns, so that two sub-pixels in oblique angles can be embedded in the row direction, and each chamfer sub-pixel is provided with two adjacent sub-pixels with chamfers at one side of the chamfer area, thereby reducing the row spacing between the pixel units.
In a specific embodiment, with continued reference to fig. 3, in the corner-cut sub-pixels, the corner-cut region is a trapezoid region, the oblique side 22001 of the trapezoid region (2200 is shown in the figure as an example) is a tangent of the corner-cut region, the length of the top side 22002 is equal to the height of the non-corner-cut sub-pixel 13 along the column direction, and the length of the bottom side 22003 is equal to the height of the corner-cut sub-pixel 12 along the column direction. Through the design, tangency between the sub-pixels with the cut corners and the sub-pixels without the cut corners can be realized, so that the arrangement of the pixel structure is tighter, and the aperture opening ratio of the pixel structure can be improved.
In the pixel structure of the present invention, each sub-pixel includes a pixel region and a frame region surrounding the pixel region, as shown in fig. 2 to 4, the pixel region is a region indicated by a frame labeled R, G, B in the sub-pixel, and the frame region is a peripheral region surrounding the pixel region and having the same shape as the pixel region. The border area of each sub-pixel is tangent. The row pitch D1 and the column pitch D2 referred to herein are pitches between pixel regions of the sub-pixels. Each sub-pixel comprises a pixel area and a frame area, because the existing process has alignment precision (ALT) when evaporating the sub-pixels, and the distance H between the pixel area and the frame area in the sub-pixel is the alignment precision. With the progress of the process and the reduction of the alignment precision, the distance H between the pixel region and the frame region in the sub-pixel can be continuously reduced. With the benefit of reducing the bit precision, the row spacing D1 and the column spacing D2 between the pixel cells can be gradually reduced from the present positive value to zero, or a negative value. Fig. 5 shows a pixel structure in which the row pitch D1 and the column pitch D2 between pixel units are both zero in another embodiment. When the row spacing and the column spacing between the pixel units are zero, human eyes cannot see the difference of the brightness in two directions; when the pitch in the two directions is negative, that is, the pixel regions of the pixel units are alternately arranged in the row direction and the column direction, it is more advantageous for the display and the appearance. Alternatively, when the resolution is changed, or when the aperture ratios of the three sub-pixels are changed, the D1 and the column pitch D2 between the pixel units are changed.
In a preferred embodiment, the cut angles of the first sub-pixel 11 and the second sub-pixel 12 in each pixel unit are preferably 45 °, and the cut angles have the same size, and the same cut angle can ensure that the row spacing and the column spacing between the pixel units are equal, so as to avoid generating visual difference in two directions and feel dark stripes. In the case of ensuring the cut angle of 45 ° and the same size, the row pitch and the column pitch between the pixel units may vary in the same tendency. In other embodiments, the chamfer angle is not limited to 45 °. When the cutting angle deviates from 45 °, the row pitch and the column pitch between the pixel units may be different. For example, when the horizontal dimension of the cut portion of the sub-pixel is smaller than the vertical dimension, the vertical pitch (i.e., column pitch) between the pixel units is larger than the horizontal pitch (i.e., row pitch), and when the pitch is large enough or the difference between the column pitch and the row pitch is large enough to reach the range that the human eye can feel, the display dark stripes are felt by the human eye, thereby affecting the appearance, so that the cut angle in the preferred embodiment cannot deviate too much from 45 °.
In the pixel structure of each embodiment, the central connecting line of the first pixel unit in each row is parallel to the central connecting line of the second pixel unit, so that the pixel units in each row are in an embedded structure, the row spacing between the adjacent pixel units in each row is reduced, the row spacing between the adjacent pixel units in each row is equal to the column spacing between the adjacent pixel units in each column, and the problem of displaying dark stripes is solved; furthermore, the corner cutting areas of the two sub-pixels in each pixel unit fill the vacant areas between the two pixel units in adjacent rows by the respective corner cutting of the two sub-pixels on the opposite sides, the other sub-pixel is kept unchanged, so that the sub-pixels of the corner cutting in the adjacent pixel units are embedded in the row direction, and the problem of dark lines of white picture display caused by unequal pixel unit intervals in the horizontal direction and the vertical direction is avoided.
The invention also provides a Fine Metal Mask (FMM for short) for evaporating a sub-pixel of one color in the pixel structure of any of the above embodiments. The precise metal mask plate is provided with a plurality of openings, each opening corresponds to one sub-pixel of the color, and the openings are overlapped with the frame regions of the sub-pixels. When three precise metal mask plates for evaporating and plating the sub-pixels with three colors are overlapped up and down for perspective observation, two adjacent openings of the precise metal mask plates are tangent. As shown in any pixel structure of fig. 2 to 5, taking the first pixel unit 10 in the upper left corner of fig. 5 as an example, the frame region (polygonal frame 110) outside the pixel region of the first sub-pixel 11 is the opening region of the mask plate when evaporating the sub-pixel, the frame region (polygonal frame 120) outside the pixel region of the second sub-pixel 12 is the opening region of the mask plate when evaporating the sub-pixel, and the frame region (square frame 130) outside the pixel region of the third sub-pixel 13 is the opening region of the mask plate when evaporating the sub-pixel. The frame regions of the sub-pixels are tangent, so any two adjacent openings of the mask plate for evaporating the sub-pixels are tangent to ensure the maximum opening rate, and the distance between the pixel regions of any two adjacent sub-pixels is the sum of the alignment precision of the two openings.
The invention also provides a display panel which adopts the pixel structure of any of the above embodiments. Referring to fig. 6 (only the connection manner between the pixel structure and the data lines and the scan lines is illustrated, and other structures of the display panel are not illustrated), when the pixel structure performs signal connection, the data lines 31 are disposed on the back of the pixel structure and can be directly connected to the sub-pixels of each color, that is, three sub-pixels in each pixel unit are respectively controlled by three data lines 31, and no compensation algorithm is required to perform compensation on the brightness of three colors. The scan line 32 is disposed on the front surface of the pixel structure, may be in a zigzag shape, and is connected to each row of sub-pixels.
The invention further provides an AMOLED display device which comprises the display panel. The AMOLED display device can be applied to the fields of mobile phones, watches, pen-on-board displays and the like, and has the advantages of wide color gamut, high contrast, low power consumption, flexible preparation and the like.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (12)

1. A pixel structure, comprising:
a first pixel cell group and a second pixel cell group alternately arranged in a row direction, the first pixel cell group including a plurality of first pixel cells sequentially arranged in a column direction, the second pixel cell group including a plurality of second pixel cells sequentially arranged in the column direction, forming a matrix in which each row is alternated by the first pixel cells and the second pixel cells, and each column is alternated by the first pixel cell group and the second pixel cell group;
the central connecting line of the first pixel unit of each row is parallel to the central connecting line of the second pixel unit, and the row spacing between the adjacent row pixel units is equal to the column spacing between the adjacent column pixel units.
2. The pixel structure according to claim 1, wherein each pixel unit includes three sub-pixels with different colors, the three sub-pixels in the first pixel unit are arranged in a delta shape, the three sub-pixels in the second pixel unit are arranged in an inverted delta shape, and the first pixel unit has the same structure after being inverted in a row direction as the second pixel unit.
3. The pixel structure according to claim 2, wherein two corner cuts are respectively formed on the side, which faces away from each other, of the two side-by-side sub-pixels in each pixel unit, so that the corner cut sub-pixels in each pixel unit form a corner cut region which exceeds the region where the non-corner cut sub-pixels are located along the column direction;
the corner cutting area of each first pixel unit fills a vacant area formed by the corner cutting between two adjacent second pixel units of adjacent columns, and the corner cutting area of each second pixel unit fills a vacant area formed by the corner cutting between two adjacent first pixel units of adjacent columns.
4. The pixel structure of claim 3, wherein the corner-cut sub-pixel is a trapezoid area, the oblique side of the trapezoid area is a tangent to the corner-cut, the length of the top side is equal to the height of the non-corner-cut sub-pixel along the column direction, and the length of the bottom side is equal to the height of the corner-cut sub-pixel along the column direction.
5. The pixel structure of claim 3, wherein each sub-pixel comprises a pixel region and a border region surrounding the pixel region, the pixel region and the border region of each sub-pixel are the same shape, and the border regions of the sub-pixels are tangent; and
the row pitch and the column pitch are pitches between pixel regions of the sub-pixels.
6. The pixel structure of claim 5, wherein the row spacing and the column spacing are both positive, zero, or negative.
7. The pixel structure of claim 3, wherein the cut angles of the sub-pixels in each pixel unit are 45 ° and the cut angles are the same size.
8. The pixel structure of claim 7, wherein the corner cut area of a sub-pixel in each pixel cell occupies 1/6-1/4 of the area of the sub-pixel.
9. A metal mask for evaporating a sub-pixel of one color in the pixel structure of claim 5, wherein the metal mask has a plurality of openings, each opening corresponds to a sub-pixel of the one color, and the openings coincide with the frame regions of the sub-pixels.
10. The metal mask of claim 9, wherein the distance between the frame region and the pixel region of a sub-pixel is the alignment accuracy when the sub-pixel is evaporated by using the metal mask.
11. A display panel employing the pixel structure of any one of claims 1-8.
12. An AMOLED display device comprising the display panel of claim 11.
CN201910256367.2A 2019-04-01 2019-04-01 Pixel structure, metal mask plate, display panel and AMOLED display device Active CN111769135B (en)

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Application Number Priority Date Filing Date Title
CN201910256367.2A CN111769135B (en) 2019-04-01 2019-04-01 Pixel structure, metal mask plate, display panel and AMOLED display device

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Application Number Priority Date Filing Date Title
CN201910256367.2A CN111769135B (en) 2019-04-01 2019-04-01 Pixel structure, metal mask plate, display panel and AMOLED display device

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CN111769135A true CN111769135A (en) 2020-10-13
CN111769135B CN111769135B (en) 2023-07-04

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