CN111769135B - 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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CN111769135B
CN111769135B CN201910256367.2A CN201910256367A CN111769135B CN 111769135 B CN111769135 B CN 111769135B CN 201910256367 A CN201910256367 A CN 201910256367A CN 111769135 B CN111769135 B CN 111769135B
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pixel
sub
pixel unit
pixels
region
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CN111769135A (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)
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  • 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 comprises: a first pixel unit group and a second pixel unit group alternately arranged along a row direction, wherein the first pixel unit group comprises a plurality of first pixel units sequentially arranged along a column direction, the second pixel unit group comprises a plurality of second pixel units sequentially arranged along the column direction, and a matrix is formed in which each row is alternately formed by the first pixel units and the second pixel units, and each column is alternately formed by the first pixel unit group and the second pixel unit group; the central connecting line of the first pixel units of each row is parallel to the central connecting line of the second pixel units, and the row spacing between the pixel units of adjacent rows is equal to the column spacing between the pixel units of adjacent columns. The invention improves the image quality when displaying the picture and eliminates the display dark lines through the structure that the row spacing between the adjacent row pixel units is equal to the column spacing between the adjacent column pixel units.

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 process of an AMOLED (Active-matrix Organic Light-emission Diode) device, the earliest development and most commonly use a Real-type pixel arrangement mode. Referring to fig. 1, in the Real pixel arrangement mode, a pixel unit is arranged in a triangle by three square sub-pixels, namely, a red (R) sub-pixel, a green (G) sub-pixel and a blue (B) sub-pixel, which are marked in the figure.
In the current Real pixel arrangement structure, the subpixels are sequentially arranged in a straight line in the horizontal direction, and the row spacing L1 of the pixel units is generally the sum of alignment precision of two subpixels; the sub-pixels are arranged in a staggered manner in the vertical direction, so that the column pitch of the pixel units is greatly reduced, and the row pitch L1 of the pixel units is larger than the column pitch L2. When the AMOLED device displays a white picture, the vertical direction is uniformly displayed, the horizontal direction is linearly displayed, the row spacing in the horizontal direction is the dead angle of pixel display, and the brightness of the AMOLED device is darkened relative to a normal area, so that dark lines appear when the AMOLED device displays the white picture, and the user experience is damaged.
It should be noted that the information applied in the above background section is only for enhancing understanding of the background of the present invention and thus may include information that does not form the prior art that is already 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 vapor deposition of the pixel structure, a display panel using the pixel structure, and an AMOLED display device including the display panel, for solving the problem of dark lines in the prior art.
According to an aspect of the present invention, there is provided a pixel structure comprising: a first pixel unit group and a second pixel unit group alternately arranged along a row direction, wherein the first pixel unit group comprises a plurality of first pixel units sequentially arranged along a column direction, the second pixel unit group comprises a plurality of second pixel units sequentially arranged along the column direction, and a matrix is formed in which each row is alternately formed by the first pixel units and the second pixel units, and each column is alternately formed by the first pixel unit group and the second pixel unit group; the central connecting line of the first pixel units of each row is parallel to the central connecting line of the second pixel units, and the row spacing between the pixel units of adjacent rows is equal to the column spacing between the pixel units of adjacent columns.
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 the structure of the first pixel unit after being turned over along the row direction is the same as that of the second pixel unit.
Preferably, in the above pixel structure, two side-by-side sub-pixels in each pixel unit are respectively provided with two chamfer angles at the opposite sides, so that the chamfer angles of the sub-pixels in each pixel unit form a chamfer angle area exceeding the area where the non-chamfer angles of the sub-pixels are located along the column direction; the corner cut area of each first pixel unit fills a blank area formed by the corner cut between two adjacent second pixel units of the adjacent columns, and the corner cut area of each second pixel unit fills a blank area formed by the corner cut between two adjacent first pixel units of the adjacent columns.
Preferably, in the pixel structure, in the corner-cut sub-pixels, the corner-cut area is a trapezoid area, the oblique side of the trapezoid area is a tangent line of the corner cut, the length of the top side is equal to the height of the non-corner-cut sub-pixels along the column direction, and the length of the bottom side is equal to the 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 are the same in shape, and the frame regions of the sub-pixels are tangent; and the row pitch and the column pitch are pitches between pixel areas of the sub-pixels.
Preferably, in the pixel structure, the row pitch and the column pitch are positive, zero or negative.
Preferably, in the above pixel structure, the chamfer angle of the sub-pixel in each pixel unit is 45 °, and the chamfer angle sizes are the same.
Preferably, in the pixel structure, the corner cutting area of the sub-pixel in each pixel unit occupies 1/6 to 1/4 of the sub-pixel area.
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 are overlapped with a frame area of the sub-pixel.
Preferably, in the metal mask, the distance between the frame area and the pixel area of the sub-pixel is the alignment precision when the sub-pixel is vapor deposited by using the metal mask.
According to another aspect of the present invention, there is provided a display panel employing the above pixel structure.
According to another aspect of the present invention, there is provided an AMOLED display device including the above-described display panel.
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 units and the central connecting line of the second pixel units of each row are parallel, the pixel units of each row are in an embedded structure, so that the row spacing between the pixel units of adjacent rows is reduced, the row spacing between the pixel units of adjacent rows is equal to the column spacing between the pixel units of adjacent columns, and the problem of dark lines display is solved;
by cutting corners of two sub-pixels in each pixel unit at one side which is away from each other, and filling a blank area between two pixel units in adjacent rows by a corner cutting area of the pixel units, an embedded structure is realized between the pixel units in each row.
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 evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram showing a pixel arrangement structure in the prior art;
FIGS. 2-5 are schematic diagrams showing pixel structures according to various embodiments of the present invention;
fig. 6 shows a schematic 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. However, the example embodiments may 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.
Fig. 2 and 3 are schematic diagrams showing a pixel structure in the embodiment of the invention. Referring to fig. 2 and 3, in some embodiments, the pixel structure of the present invention includes:
the first pixel cell group 1 and the second pixel cell group 2 are alternately arranged in the row direction (i.e., horizontal direction as illustrated), the first pixel cell group 1 includes a plurality of first pixel cells 10 sequentially arranged in the column direction (i.e., vertical direction as illustrated), and the second pixel cell group 2 includes a plurality of second pixel cells 20 sequentially arranged in the column direction. The entire pixel structure forms a matrix with each row alternating with first pixel cells 10 and second pixel cells 20 and each column alternating with first pixel cell group 1 and second pixel cell group 2.
Wherein the central line Y-Y 'of the first pixel unit 10 of each row is parallel to the central line X-X' of the second pixel unit 20. Wherein, the round point O on the central connecting line Y-Y' is provided with a plurality of round points O 1 Is the center of each first pixel unit 10, and the dot O on the center line X-X 2 Is 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 on a straight line, but have a wave-shaped structure with staggered height and height. In this way, the first pixel unit 10 and the second pixel unit 20 between different rows can be made to have an embedded 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 lines are not displayed due to the difference of row spacing and column spacing between 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 turned over along the row direction is the same as that of the second pixel unit 20, i.e. the structure of the first pixel unit turned over horizontally for 180 ° is the same as that of the second pixel unit 20. The delta arrangement means that the central connection line of the three sub-pixels of each pixel unit is triangular, and in a preferred embodiment, the central connection line may be an equilateral triangle. The three sub-pixels having different colors in each pixel unit are respectively selected from red sub-pixels (R), green sub-pixels (G) and blue sub-pixels (B). In the figure, the first subpixel 11 is a green subpixel (G) and is arranged on the left side of the first pixel unit 10 in the delta shape, the second subpixel 12 is a blue subpixel (B) and is arranged on the right side of the first pixel unit 10 in the delta shape, and the third subpixel 13 is a red subpixel (R) and is arranged on the upper side of the first pixel unit 10 in the delta shape. In other embodiments, the R, G, B three sub-pixels can adopt other delta arrangement structures, and the first sub-pixel 11 can also be a red sub-pixel or a blue sub-pixel, and accordingly, the second sub-pixel 12 and the third sub-pixel 13 also change correspondingly, and the first, second and third sub-pixels are not used to limit specific colors, so long as three sub-pixels including a red sub-pixel, a green sub-pixel and a blue sub-pixel are satisfied in one pixel unit.
In a specific embodiment, the structure of the pixel units embedded in the row direction is realized by cutting the corners of two sub-pixels in each pixel unit on the opposite sides. In a preferred embodiment, the two sub-pixels of each pixel unit side by side are cut to make the arrangement between the pixel units after the cutting more compact. In connection with the pixel structure shown in fig. 3 and 4, the first sub-pixel (G) 11 and the second sub-pixel (B) 12 in each pixel unit are respectively provided with two cut angles at the side facing away from each other, wherein the first sub-pixel 11 is provided with two cut angles 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 angles 121 and 122 at the side facing away from the first sub-pixel 11. For convenience of explanation, the upper left corner cut 111 of the first subpixel 11 is referred to as a first corner cut 111, the lower left corner cut 112 of the first subpixel 11 is referred to as a second corner cut 112, the upper right corner cut 121 of the second subpixel 12 is referred to as a third corner cut 121, and the lower right corner cut 122 of the second subpixel 12 is referred to as a fourth corner cut 122, taking the illustrated direction as an example. In this way, two chamfer angles are respectively set on the side facing away from the first subpixel 11 and the second subpixel 12 in each pixel unit, so that the chamfer angle region of the subpixel in each pixel unit exceeding the region where the chamfer angle is not formed along the column direction, that is, the chamfer angle region 1101 of the region where the chamfer angle of the first subpixel 11 in the first pixel unit 10 is located exceeding the region where the chamfer angle of the third subpixel 13 is located, the chamfer angle region 1201 of the region where the chamfer angle of the second subpixel 12 is located exceeding the region where the chamfer angle of the third subpixel 13 is located, the chamfer angle region 2101 of the region where the chamfer angle of the first subpixel 11 is located exceeding the region where the chamfer angle of the third subpixel 13 is located, and the chamfer angle region 2201 of the region where the chamfer angle of the second subpixel 12 is located exceeding the region where the chamfer angle of the third subpixel 13 is located are formed in the second pixel unit 20.
In other embodiments, two corners may be disposed on the opposite sides of the first sub-pixel 11 and the third sub-pixel (R) 13, or two corners may be disposed on the opposite sides of the second sub-pixel 12 and the third sub-pixel 13. That is, the present invention is not limited to the colors and positions of the two sub-pixels of the chamfer, and they may be a combination of any two sub-pixels among the R, G, B three-color sub-pixels. The shape of the sub-pixel is not limited to the square shape as shown, and the R, G, B three-color sub-pixel may be circular, triangular, square, diamond, trapezoid, hexagon, octagon, or even irregular.
Further, the two cut angles of the first sub-pixel 11 in any pixel unit are opposite to the cut angles of the second sub-pixel 12 of two adjacent pixel units in an adjacent column pixel unit group of the pixel unit. Taking the pixel unit 20 shown 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 neighboring pixel unit 10 in the pixel unit group 1 of the left neighboring group, 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 neighboring pixel unit 10 in the pixel unit group 1 of the left neighboring group.
Further, in addition to the opposite chamfer, the chamfer area of each first pixel unit 10 fills the void area formed by the chamfer between two adjacent second pixel units 20 of the adjacent column, and the chamfer area of each second pixel unit 20 fills the void area formed by the chamfer between two adjacent first pixel units 10 of the adjacent column. As shown in fig. 3, the corner cut region 1201 of the first pixel unit 10 and the corner cut region 2101 of the second pixel unit 20 shown in a bold frame with broken lines are taken as an example. The corner cut region 1201 of the second sub-pixel 12 in the first pixel unit 10 fills the void region between two adjacent diagonally shaded second pixel units 20 of the right adjacent column of the first pixel unit 10. The corner cut area 2101 of the first sub-pixel 11 in the second pixel unit 20 fills the void area between two adjacent wave-dotted shaded first pixel units 10 of the left adjacent column of the second pixel unit 20. In this way, by arranging the chamfer at the corner of the sub-pixel, and filling the chamfer area of the pixel unit in the blank area of the pixel unit in the adjacent column, the two sub-pixels of the diagonal angle can be embedded in the row direction, and each chamfer sub-pixel is provided with two adjacent sub-pixels with chamfer at one side of the chamfer, so that the row spacing between the pixel units is reduced.
In a specific embodiment, with continued reference to fig. 3, the corner-cut sub-pixel is a trapezoid, the hypotenuse 22001 of the trapezoid (2200 is shown as an example) is a tangent to the corner-cut, the length of the top edge 22002 is equal to the height of the non-corner-cut sub-pixel 13 in the column direction, and the length of the bottom edge 22003 is equal to the height of the corner-cut sub-pixel 12 in the column direction. Through the design, the tangent between the chamfer sub-pixels and the non-chamfer sub-pixels 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, which is a region indicated by a frame denoted R, G, B in the sub-pixel as shown in fig. 2 to 4, and a frame region surrounding the pixel region and having the same shape as the pixel region. The border region of each subpixel is tangent. The row pitch D1 and the column pitch D2 referred to in the present invention are pitches between pixel areas of the sub-pixels. Each sub-pixel comprises a pixel region and a frame region, because the existing process has alignment Accuracy (ALT) when the sub-pixel is evaporated, and the distance H between the pixel region and the frame region in the sub-pixel is the alignment accuracy. Along with the progress of the process, the alignment accuracy is reduced, and the distance H between the pixel region and the frame region in the sub-pixel can be continuously reduced. The row spacing D1 and column spacing D2 between pixel cells may be gradually reduced from a now positive value to zero, or negative, value, benefiting from the reduction of the alignment accuracy. Fig. 5 shows a pixel structure with zero row spacing D1 and zero column spacing D2 between pixel units in another embodiment. When the row spacing and the column spacing between the pixel units are zero, the human eye will not see the difference of brightness in the two directions; when the pitch in both directions is negative, that is, the pixel areas of the pixel units are alternately arranged in the row direction and the column direction, it is more advantageous to display and look and feel. Alternatively, when the resolution is changed or when the aperture ratio of the three sub-pixels is changed, the D1 and the column pitch D2 between the pixel units are changed to some extent.
In the preferred embodiment, the corners of the first sub-pixel 11 and the second sub-pixel 12 in each pixel unit are preferably 45 degrees, and the corners have the same size, and the same corners can ensure that the row spacing and the column spacing between the pixel units are equal, so that the display dark marks are prevented from being perceived due to visual difference in two directions. With the cut angle of 45 ° ensured and the same size, the row pitch and the column pitch between the pixel units may vary in the same trend. In other embodiments, the chamfer is not limited to 45 °. When the chamfer angle deviates from 45 °, there is a difference in the row pitch and the column pitch between the pixel cells. 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 column pitch and row pitch differ by a sufficient amount to the extent that the human eye can feel dark marks, the human eye can feel the dark marks, thereby affecting the look and feel, therefore, the cut angle in the preferred embodiment cannot deviate too much from 45 °.
The pixel structure of each embodiment enables the pixel units of each row to be in an embedded structure through the design that the central connecting line of the first pixel unit and the central connecting line of the second pixel unit of each row are parallel, so that the row spacing between the pixel units of adjacent rows is reduced, the row spacing between the pixel units of adjacent rows is equal to the column spacing between the pixel units of adjacent columns, and the problem of dark lines display is solved; further, through the respective chamfer of two sub-pixels at the opposite sides of each pixel unit, the other sub-pixel is kept unchanged, and the chamfer area of each pixel unit fills the blank area between two pixel units in the adjacent row, so that the embedding of the chamfer sub-pixels in the adjacent pixel units in the row direction is realized, and the problem of dark lines displayed on a white picture due to unequal pixel unit spacing in the horizontal direction and the vertical direction is avoided.
The invention also provides a precision Metal Mask (FMM) for evaporating the sub-pixel with one color in the pixel structure of any embodiment. The precision 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 area of the sub-pixel. When three precise metal mask plates for evaporating the sub-pixels with three colors are stacked 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 when the sub-pixel is vapor-deposited, the frame region (polygonal frame 120) outside the pixel region of the second sub-pixel 12 is the opening region of the mask when the sub-pixel is vapor-deposited, and the frame region (square frame 130) outside the pixel region of the third sub-pixel 13 is the opening region of the mask when the sub-pixel is vapor-deposited. The frame areas of all the sub-pixels are tangent, so that any two adjacent openings of the mask plate for evaporating all the sub-pixels are tangent to ensure the maximum opening ratio, and the distance between the pixel areas 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 embodiment. Referring to fig. 6 (only the connection mode of the pixel structure with the data line and the scan line is illustrated, and other structures of the display panel are not illustrated), when the pixel structure is in signal connection, the data line 31 is disposed on the back of the pixel structure, and can be directly connected with each color sub-pixel, 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 brightness of three colors. The scan line 32 is disposed on the front side of the pixel structure, may be in a meandering shape, and is connected to each row of sub-pixels.
The invention also provides an AMOLED display device, which comprises the display panel. The AMOLED display device can be applied to a plurality of fields such as mobile phones, watches, pens, vehicle-mounted 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 further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims (10)

1. A pixel structure, comprising:
a first pixel unit group and a second pixel unit group alternately arranged along a row direction, wherein the first pixel unit group comprises a plurality of first pixel units sequentially arranged along a column direction, the second pixel unit group comprises a plurality of second pixel units sequentially arranged along the column direction, and a matrix is formed in which each row is alternately formed by the first pixel units and the second pixel units, and each column is alternately formed by the first pixel unit group and the second pixel unit group;
the central connecting line of the first pixel units of each row is parallel to the central connecting line of the second pixel units, and the row spacing between the pixel units of adjacent rows is equal to the column spacing between the pixel units of adjacent columns;
each pixel unit comprises 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 structure of the first pixel unit after being turned over along the row direction is the same as that of the second pixel unit;
two side-by-side sub-pixels in each pixel unit are respectively provided with two chamfer angles at one side which is away from each other, so that the chamfer angles of the sub-pixels in each pixel unit form a chamfer angle area which exceeds the area where the non-chamfer angles of the sub-pixels are located along the column direction;
the corner cut area of each first pixel unit fills a blank area formed by the corner cut between two adjacent second pixel units of the adjacent columns, and the corner cut area of each second pixel unit fills a blank area formed by the corner cut between two adjacent first pixel units of the adjacent columns.
2. The pixel structure of claim 1, wherein in the corner-cut sub-pixels, the corner-cut region is a trapezoid region, the oblique side of the trapezoid region is a tangent line of the corner cut, the length of the top side is equal to the height of the non-corner-cut sub-pixels along the column direction, and the length of the bottom side is equal to the height of the corner-cut sub-pixels along the column direction.
3. The pixel structure of claim 1, 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 identical in shape, and the border region of each sub-pixel is tangent; and
the row pitch and the column pitch are pitches between pixel areas of the sub-pixels.
4. A pixel structure as claimed in claim 3, wherein the row pitch and the column pitch are each positive, zero or negative.
5. The pixel structure of claim 1 wherein the corners of the sub-pixels in each pixel unit are 45 ° and the corners are the same size.
6. The pixel structure of claim 5, wherein the corner cut area of the sub-pixel in each pixel unit occupies 1/6 to 1/4 of the sub-pixel area.
7. A metal mask for evaporating a sub-pixel of one color in the pixel structure of claim 3, wherein the metal mask has a plurality of openings, each opening corresponds to a sub-pixel of the one color, and the openings are coincident with a frame region of the sub-pixel.
8. The metal mask plate according to claim 7, wherein a distance between a frame region and a pixel region of the sub-pixel is alignment accuracy when the sub-pixel is vapor deposited by using the metal mask plate.
9. A display panel employing the pixel structure of any one of claims 1-6.
10. An AMOLED display device comprising the display panel of claim 9.
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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CN111769135B true CN111769135B (en) 2023-07-04

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