CN114335129A - Display panel, display device, mask assembly and manufacturing method - Google Patents

Abstract

The display panel comprises a pixel unit, wherein the pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the central connecting lines of the first sub-pixel, the second sub-pixel and the third sub-pixel are triangular, the centers of the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit arranged along the first direction are on the same straight line, the centers of the second sub-pixel and the third sub-pixel in the pixel unit arranged along the second direction are alternately arranged, the centers of the second sub-pixel and the third sub-pixel are on the same straight line, and the straight line penetrating through the center of the first sub-pixel along the first direction is positioned between the straight line penetrating through the center of the second sub-pixel along the first direction and the straight line penetrating through the center of the third sub-pixel along the first direction. Through the setting of sub-pixel in this application, the luminous central point of pixel element all is in same straight line in first direction and second direction, so, can ensure that the picture quality is even, has reduced the graininess for display panel's display effect preferred.

Description

Display panel, display device, mask assembly and manufacturing method

Technical Field

The application relates to the field of display, in particular to a display panel, a display device, a mask assembly and a manufacturing method of the display panel.

Background

OLED display panels are widely used in the display field due to their characteristics of self-luminescence, low power consumption, and rollability. The pursuit of image quality improvement is also a matter that screen manufacturers pursue. In the related art, in order to improve the image quality of an OLED product, a sub-Pixel Rendering (SPR) technology is used for displaying, and the technology can change the mode that a Pixel is simply defined by conventional red, green and blue sub-pixels by using the difference of human eyes in the resolution ratios of the sub-pixels with different colors, and simulate and realize the same Pixel resolution Rendering capability by sharing the sub-pixels with the insensitive colors of the resolution ratios at certain positions among different pixels with relatively less sub-Pixel numbers, thereby reducing the difficulty of the manufacturing process and the manufacturing cost. However, some detailed pictures still have non-uniformity or characteristics not displayed completely by pixels.

Disclosure of Invention

In view of the above, the present application provides a display panel, a display device, a mask assembly and a method for manufacturing the display panel.

The display panel of the embodiment of the application comprises pixel units which are arranged in an array, wherein each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the connecting lines of the centers of the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit are triangular, the centers of the first sub-pixels in the pixel unit which is arranged along a first direction are on the same straight line, the centers of the second sub-pixels are on the same straight line and the centers of the third sub-pixels are on the same straight line, the second sub-pixels and the third sub-pixels in the pixel unit which is arranged along a second direction are alternately arranged, and the centers of the second sub-pixels and the third sub-pixels are on the same straight line;

a straight line passing through the center of the first sub-pixel in the first direction is located between a straight line passing through the center of the second sub-pixel in the first direction and a straight line passing through the center of the third sub-pixel in the first direction.

In some embodiments, a distance between a straight line passing through the center of the first subpixel in the first direction and a straight line passing through the center of the third subpixel in the first direction is less than or equal to a distance between a straight line passing through the center of the first subpixel in the first direction and a straight line passing through the center of the second subpixel in the first direction.

In some embodiments, the display panel includes a support pillar located between two adjacent second sub-pixels in the first direction and between two adjacent first sub-pixels in the second direction.

In some embodiments, a straight line passing through the center of the first sub-pixel along the second direction passes through the area where the supporting pillar is located.

In some embodiments, the support posts have a dimension less than a process margin distance.

In some embodiments, the first sub-pixel is disposed opposite to the support pillar along an edge extending in the first direction, and the second sub-pixel is disposed opposite to the support pillar along an edge extending in the second direction.

In certain embodiments, the support posts are square.

In some embodiments, the first sub-pixel has a hexagonal shape, the second sub-pixel has a hexagonal shape, and the third sub-pixel has a quadrangular shape.

In some embodiments, the edge of the second sub-pixel extending along the first direction is disposed opposite to the edge of the adjacent third sub-pixel extending along the first direction.

In some embodiments, the first sub-pixel includes a first side opposite to the third sub-pixel, and the first side is parallel to a corresponding side of an adjacent third sub-pixel.

In some embodiments, the included angle between the first side edge and a straight line in the first direction is greater than or equal to 0 ° and less than or equal to 45 °.

In some embodiments, the third sub-pixel has a square or trapezoid shape.

In some embodiments, the first sub-pixel comprises a second side edge opposite to the second sub-pixel, and the second side edge forms an angle smaller than 30 ° with a corresponding edge of an adjacent second sub-pixel.

In some embodiments, the first sub-pixel comprises a green sub-pixel, the second sub-pixel comprises a blue sub-pixel, and the third sub-pixel comprises a red sub-pixel.

In some embodiments, in the first direction, the first sub-pixel is of an axisymmetric design, the second sub-pixel is of an axisymmetric design, and the third sub-pixel is of an axisymmetric design.

In some embodiments, two of the first sub-pixels adjacently disposed in the first direction are included between two of the third sub-pixels adjacent to each other in the first direction, and the two of the first sub-pixels are symmetrically disposed with respect to a perpendicular bisector of a central connecting line of the two of the third sub-pixels adjacent to each other.

In some embodiments, the display panel includes two first sub-pixels symmetrically disposed with respect to a center-to-center line of a second sub-pixel and a third sub-pixel in the pixel unit, and the two first sub-pixels symmetrically disposed with respect to the center-to-center line of the second sub-pixel and the third sub-pixel in the pixel unit share the second sub-pixel and the third sub-pixel.

In some embodiments, the first sub-pixel has a pentagonal shape, the second sub-pixel has a hexagonal shape, and the third sub-pixel has a quadrangular shape.

The display device according to the embodiment of the present application includes the display panel according to any one of the above embodiments.

The mask assembly of this application embodiment for make any one of above-mentioned embodiment display panel, the mask assembly includes:

the first mask plate comprises a first substrate and at least one first opening arranged on the first substrate, and the shape of the first opening is the same as that of a light-emitting device layer of the display panel for forming the first sub-pixel;

the second mask plate comprises a second substrate and at least one second opening arranged on the second substrate, and the shape of the second opening is the same as that of a light-emitting device layer forming the second sub-pixel in the display panel;

and the third mask plate comprises a third substrate and at least one third opening arranged on the third substrate, and the shape of the third opening is the same as that of the light-emitting device layer forming the third sub-pixel in the display panel.

In some embodiments, each of the pixel units includes two first sub-pixels, the two first sub-pixels of each of the pixel units are respectively disposed opposite to adjacent pixel units in the first direction, and each of the first openings covers two first sub-pixels of the display panel disposed adjacent to each other in the second direction.

The method for manufacturing a display panel according to the embodiment of the present application is used for manufacturing the display panel, and the method for manufacturing the display panel includes:

forming the first sub-pixel of the display panel by using a first mask plate through an evaporation process, wherein the first mask plate comprises at least one first opening, and the shape of the first opening is the same as that of a light-emitting device layer forming the first sub-pixel in the display panel;

forming the second sub-pixels of the display panel by using a second mask plate through an evaporation process, wherein the second mask plate comprises at least one second opening, and the shape of the second opening is the same as that of a light-emitting device layer forming the second sub-pixels in the display panel;

and forming the third sub-pixels of the display panel by using a third mask plate through an evaporation process, wherein the third mask plate comprises at least one third opening, and the shape of the third opening is the same as that of a light-emitting device layer forming the third sub-pixels in the display panel.

In the display panel, the display device, the mask assembly and the manufacturing method of the display panel, the connecting lines of the centers of the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit are triangular, and in the pixel unit arranged along the first direction, the center of the first sub-pixel is on the same straight line, the center of the second sub-pixel is on the same straight line, the center of the third sub-pixel is on the same straight line, in the pixel unit arranged along the second direction, the second sub-pixel and the third sub-pixel are alternately arranged, the center of the second sub-pixel and the center of the third sub-pixel are on the same straight line, so that each sub-pixel can be in the same row and the same column, and the rows and columns are at equal intervals, therefore, the luminous center point of the pixel unit synthesized by the first sub-pixel, the second sub-pixel and the third sub-pixel is on the same straight line in the first direction and the second direction, therefore, the image quality is ensured to be uniform, the granular sensation is reduced, and the display effect of the display panel is better.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a pixel opening structure of a mask assembly according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a first mask according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a second mask according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a third mask according to an embodiment of the present application;

FIGS. 9 to 10 are schematic views of pixel opening structures of mask assemblies according to embodiments of the present disclosure;

fig. 11 is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the present application.

Description of the main element symbols:

the display panel 10, the pixel unit 12, the first sub-pixel 122, the first side 1222, the second side 1224, the second sub-pixel 124, the third sub-pixel 126, and the support pillar 14;

a first mask plate 20, a first substrate 22, a first opening 24, a second mask plate 30, a second substrate 32, a second opening 34, a third mask plate 40, a third substrate 42 and a third opening 44;

a first direction x, a second direction y;

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The OLED display is popular with consumers as a mainstream display screen. The pursuit of image quality improvement is also a matter that screen manufacturers pursue. The high-resolution display screen requires that the pixel size and the inter-pixel distance are correspondingly reduced, so that the requirement on the manufacturing process is extremely high, and the problem of how to improve the resolution and reduce the process difficulty becomes an exploration problem.

The current solution mainly adopts a sub-Pixel Rendering (SPR) technology, which can change the mode of simply defining a Pixel by using the difference of human eyes to the resolution of sub-pixels with different colors, and simulate to realize the same Pixel resolution Rendering capability by sharing the sub-pixels with certain positions and insensitive colors among different pixels and using relatively less sub-pixels, thereby reducing the difficulty of the manufacturing process and the manufacturing cost, but the pixels are still uneven or the characteristics are not all displayed when displaying some fine pictures.

In view of the above, referring to fig. 1-4, the present application provides a display panel 10, in which the display panel 10 includes pixel units 12 arranged in an array, and the pixel units 12 include a first sub-pixel 122, a second sub-pixel 124, and a third sub-pixel 126.

In the pixel unit 12, the connecting lines of the centers of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 are triangle, and in the pixel unit 12 arranged along the first direction x, the centers P1 of the first sub-pixel 122 are on the same straight line, the centers P2 of the second sub-pixel 124 are on the same straight line and the centers P3 of the third sub-pixels 126 are on the same straight line, in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged, and the centers P2 of the second sub-pixel 124 and the centers P3 of the third sub-pixels 126 are on the same straight line;

a straight line passing through the center P1 of the first sub-pixel 122 in the first direction x is located between a straight line passing through the center P2 of the second sub-pixel 124 in the first direction x and a straight line passing through the center P3 of the third sub-pixel 126 in the first direction x.

In the display panel 10 of the present application, the connection line of the centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 is triangular, and in the pixel unit 12 arranged along the first direction x, the center P1 of the first sub-pixel 122 is on the same straight line, the center P1 of the second sub-pixel 126 is on the same straight line, the center P3 of the third sub-pixel 126 is on the same straight line, in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged and the centers P2 of the second sub-pixel 124 and the center P3 of the third sub-pixel 126 are on the same straight line, so that each of the sub-pixels can be in the same row and the same column, and the rows and the columns are all at the same interval, and therefore, the central point of the light emission of the pixel unit combined by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is on the same straight line in the first direction x and the second direction y, thus, the image quality is ensured to be uniform, the granular sensation is reduced, and the display effect of the display panel 10 is better.

Specifically, the display panel 10 may be an Organic Light-Emitting Diode (OLED) display panel 10. The display panel 10 displays by using organic light emitting diodes, can realize autonomous light emission and customized driving of pixel points, can realize a display function without a backlight, and has the advantages of light weight, low energy consumption, high brightness, good luminous efficiency and the like.

It should be noted that. The pixel unit 12 refers to the smallest repeating unit in the display panel 10 that can achieve the same light emitting effect and function. The pixel units 12 are arranged in an array, which means that the centers of the pixel units 12 are arranged alternately along at least a first direction x and a second direction y to form an array. In particular, the plurality of pixel units 12 may be arranged in an array by being staggered along a first direction x and a second direction y perpendicular to each other, in which case, the first direction x and the second direction y perpendicular to each other may be a row extending direction and a column extending direction of the pixel units 12, the pixel units 12 arranged along the row extending direction form a pixel row, and the pixel units 12 arranged along the column extending direction form a pixel column. The rows and columns of the pixel units 12 in the display panel 10 are opposite.

In some embodiments, the center of a sub-pixel refers to the geometric center position of the sub-pixel. The first direction x may be a row direction, i.e. a row extension direction of the pixel cells 12, and the second direction y may be a column direction, i.e. a column extension direction of the pixel cells 12. In some embodiments, the first direction x may also be a column direction, i.e. a column extension direction of the pixel unit 12, and the second direction y may be a row direction, i.e. a row extension direction of the pixel unit 12.

The pitch between the sub-pixels refers to a minimum distance between edges of the sub-pixels that are close to each other, and the distance is smaller than a distance between centers of the two sub-pixels. The pitch of two sub-pixels adjacently arranged needs to be greater than or equal to the process limit distance. The sub-pixels are adjacent to the sub-pixels, which means that the connection line of the minimum distance between two sub-pixels does not pass through other sub-pixels.

In the pixel unit 12, the distance between the first sub-pixel 122 and the second sub-pixel 124 needs to be greater than or equal to the process limit distance, the distance between the first sub-pixel 122 and the third sub-pixel 126 needs to be greater than or equal to the process limit distance, and the distance between the first sub-pixel 122 and the third sub-pixel 126 needs to be greater than or equal to the process limit distance. In this way, the display panel 10 can reduce the distance between the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 to the maximum, so that under the condition of the same resolution, the pixel opening area can be increased among the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126, the driving current of the display panel is reduced, and the service life of the display panel is further increased.

Referring to fig. 2, correspondingly, in some embodiments, the centers P2 of the second sub-pixels 124 and the centers P3 of the third sub-pixels 126 that are alternately arranged may be on the same straight line along the second direction y. The centers P1 of the first sub-pixels 122 and the centers P3 of the third sub-pixels 126, which are alternately arranged in the first direction x, may not be on the same straight line.

It is understood that the specific arrangement of the second sub-pixel 124 and the third sub-pixel 126 may be determined according to the size and arrangement of the pixel unit 12 and the size and position of the second sub-pixel 124 and the third sub-pixel 126, and is not limited in detail herein.

In some embodiments, the light emitting color of the first sub-pixel 122, the light emitting color of the second sub-pixel 124, and the light emitting color of the third sub-pixel 126 are different from each other. For example, in the present embodiment, the first sub-pixel 122 is a green sub-pixel, the second sub-pixel 124 is a blue sub-pixel, and the third sub-pixel 126 is a red sub-pixel.

The light emitting area of the second sub-pixel 124 is larger than that of the first sub-pixel 122, and the light emitting area of the first sub-pixel 122 is larger than that of the third sub-pixel 126. That is, the light emitting area of the blue sub-pixel is larger than that of the green sub-pixel, and the light emitting area of the green sub-pixel is larger than that of the red sub-pixel. The specific ratio of the light emitting areas of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is not limited, and may be set according to actual conditions.

It will be appreciated that for an organic light emitting diode display device, the blue sub-pixel area may be larger than the red or green sub-pixel area, since the blue light emitting material typically has the lowest luminous efficiency and a relatively short lifetime compared to the red and green. Furthermore, since the human eye is more sensitive to red and the red luminescent material is most efficient, the red sub-pixel area can be made minimal.

The specific ratio of the light emitting areas of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is not limited, and may be set according to actual conditions. For example, the light emitting areas of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 may be 5: 4: 2 or 5: 4: 3 or 6: 5: 2, etc.

Of course, in other embodiments, the correspondence relationship between the emission colors of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 may not be limited to the above-discussed embodiments, and may be changed according to actual needs, and is not limited in detail here.

In some embodiments, the size of the first sub-pixel 122 is smaller than the size of the second sub-pixel 124, and the size of the first sub-pixel 124 is greater than or equal to the size of the third sub-pixel 126 along the first direction.

In some embodiments, along the second direction, the size of the first sub-pixel 122 is greater than the size of the second sub-pixel 124, and the size of the second sub-pixel 124 is greater than or equal to the size of the third sub-pixel 126.

In some embodiments, a distance between a straight line passing through the center of the first subpixel 122 along the first direction x and a straight line passing through the center of the third subpixel 126 along the first direction x is less than or equal to a distance between a straight line passing through the center of the first subpixel 122 along the first direction x and a straight line passing through the center of the second subpixel 124 along the first direction x.

In some embodiments, the display panel 10 includes support pillars 14, and the support pillars 14 are located between two adjacent second sub-pixels 124 in the first direction x and between two adjacent first sub-pixels 122 in the second direction y.

Specifically, the supporting columns 14 include a plurality of supporting columns 14, and the centers of the plurality of supporting columns 14 are staggered along at least a first direction x and a second direction y to form an array. Each support column 14 is located between adjacent four pixel units 12, and each support column 14 is located between two adjacent second sub-pixels 124 in the first direction x and between two adjacent first sub-pixels 122 in the second direction y.

In some embodiments, a straight line passing through the center of the first sub-pixel 122 along the second direction y passes through the region where the supporting pillar 14 is located. Specifically, the first sub-pixels 122 are alternately arranged with the support columns 14 in the second direction y, and a straight line connecting the centers of the first sub-pixels 122 and the centers of the support columns 14 in the second direction y is parallel to the second direction y.

In some embodiments, there is at least one straight line along the first direction x that passes through both the support posts 14 and the second sub-pixel 124.

The support posts 14 may be spacers (PS), and the support posts 14 may be formed on a substrate (Bae plate, BP), so that there is no open-hole overlapping position after the Fine Metal Masks (FMMs) are overlapped to prevent the FMMs from scratching the support posts 14.

In certain embodiments, the support posts 14 are sized less than the process limit distance. Thus, the waste of the aperture ratio of the whole arrangement of the display panel 10 is small.

In some embodiments, the side of the first sub-pixel 122 extending along the first direction x is disposed opposite the support post 14, and the side of the second sub-pixel 124 extending along the second direction y is disposed opposite the support post 14.

Specifically, the support column 14 is square or circular. For example, the supporting columns 14 may be rectangular or square, and in the present embodiment, the supporting columns 14 may be square, that is, the length and the width of the supporting columns 14 are equal. The support posts 14 may have a length and width dimension in the range of 5-40 microns. For example, the support posts 14 may have a width of, but not limited to, 5 microns, 6 microns, 8 microns, 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, or 40 microns, and the like.

The first sub-pixel 122 is disposed in parallel with the side of the support pillar 14 opposite thereto, and the second sub-pixel 124 is disposed in parallel with the side of the support pillar 14 opposite thereto. Also, the interval between the sides of the first subpixel 122 disposed opposite the supporting post 14 and the interval between the sides of the second subpixel 124 disposed opposite the supporting post 14 may be equal.

In this way, the display panel 10 can reduce the distance between the first sub-pixel 122, the second sub-pixel 124 and the supporting pillar 14 to the maximum, so that the pixel opening area of the first sub-pixel 122 and the second sub-pixel 124 can be increased under the condition of the same resolution, the driving current of the display panel 10 can be reduced, and the service life of the display panel 10 can be prolonged.

Referring to fig. 2, in some embodiments, the distance between the center of the supporting pillar 14 and the center of the first sub-pixel 122 is greater than or equal to the distance between the center of the supporting pillar 14 and the center of the second sub-pixel 124, and the distance between the center of the supporting pillar 14 and the center of the second sub-pixel 124 is greater than the distance between the center of the supporting pillar 14 and the center of the third sub-pixel 126.

In some embodiments, the center of the supporting column 14 is not aligned with the center of the second sub-pixel 124 along the first direction x.

In some embodiments, a distance between a straight line passing through the center of the support post 14 along the first direction x and a straight line passing through the center of the first sub-pixel 122 along the first direction x is smaller than a distance between a straight line passing through the center of the support post 14 along the first direction x and a straight line passing through the center of the third sub-pixel 126 along the first direction x.

Referring to fig. 1 and 3, in some embodiments, the first sub-pixel 122 has a hexagonal shape, the second sub-pixel 124 has a hexagonal shape, and the third sub-pixel 126 has a quadrangular shape.

In each pixel unit 12 in the display panel 10, two opposite sides of the first sub-pixel 122 among six sides are respectively adjacent to one second sub-pixel 124 and the third sub-pixel 126 of one adjacent pixel unit 12, and the other four sides of the first sub-pixel 122 are respectively adjacent to two third sub-pixels 126 and two support pillars 14. Similarly, two opposite sides of the second sub-pixel 124 among six sides are respectively adjacent to the first sub-pixel 122 and the first sub-pixel 122 in another adjacent pixel unit 12, and the other four sides of the second sub-pixel 124 are respectively adjacent to the two third sub-pixels 126 and the two support pillars 14. The third sub-pixel 126 is adjacent to the two first sub-pixels 122 at one pair of opposite sides, and the third sub-pixel 126 is adjacent to the two second sub-pixels 124 at the other pair of opposite sides.

It should be noted that, in the embodiments as shown in fig. 1 and fig. 3, a Real RGB pixel structure is adopted. That is, each pixel unit 12 includes a first sub-pixel 122, a second sub-pixel 124, and a third sub-pixel 126.

It is understood that in the related art, the Real RGB pixel structure includes a Real SRGB pixel arrangement and a Real Delta RGB pixel arrangement, among others. In Real SRGB pixel arrangement, monochromatic pixels are in the same row and the same column, and the rows and the columns are at equal intervals, so that the display effect is better, but the pixel aperture ratio is low, the service life is short, and the use requirement is not met. The Real Delta RGB pixel arrangement has the characteristic of high pixel aperture ratio, but the display effect is not good. The pixel arrangement in the Real RGB pixel structure provided by the present application makes the sub-pixels in the same row and the same column, so that the light emitting centers of the pixel units 12 formed by the sub-pixels are arranged in the same row and the same column, which can not only achieve the excellent display effect of the display panel 10 due to the fact that the Real SRGB pixel arrangement is adopted, but also improve the pixel aperture ratio of the sub-pixels due to the hexagonal arrangement of the first sub-pixel 122 and the second sub-pixel 124, thereby prolonging the service life of the pixel units 12, and not only can improve the resolution of the display panel 10, but also can reduce the process difficulty.

In some embodiments, the first subpixel 122, the second subpixel 124, and the third subpixel 126 each include an edge parallel to the first direction.

In some embodiments, the first subpixel 122, the second subpixel 124, and the third subpixel 126 each include an edge that is parallel to the first direction and the second direction.

In some embodiments, the first subpixel 122 and the third subpixel 126 include edges that are collinear.

Referring to fig. 4, in some embodiments, the first sub-pixel 122 is pentagonal, the second sub-pixel 124 is hexagonal, and the third sub-pixel 126 is quadrilateral.

In the display panel 10, one side of the five sides of the first sub-pixel 122 is adjacent to one side of the second sub-pixel 124, and the other four sides of the first sub-pixel 122 are adjacent to two third sub-pixels 126 and two support pillars 14, respectively. Similarly, two opposite sides of the second subpixel 124 among six sides are adjacent to the two first subpixels 122, respectively, and the other four sides of the second subpixel 124 are adjacent to the two third subpixels 126 and the two support pillars 14, respectively. The third sub-pixel 126 is adjacent to the two first sub-pixels 122 at one pair of opposite sides, and the third sub-pixel 126 is adjacent to the two second sub-pixels 124 at the other pair of opposite sides.

In this embodiment, the SPR pixel structure arrangement is adopted. That is, in the first direction x, every two first sub-pixels share one second sub-pixel and one third sub-pixel to form two pixel units.

It can be understood that the arrangement of the SPR pixel structure proposed in the present application can improve the resolution of the display panel 10 and reduce the process difficulty. Moreover, compared with the conventional SPR pixel arrangement, the display effect of the display panel 10 can be improved.

Of course, in other embodiments, the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 are not limited to the shapes discussed above, and one or more of a quadrangle, a hexagon, and an octagon may be selected according to actual needs, and are not limited in this respect.

In some embodiments, the first subpixel 122, the second subpixel 124, and the third subpixel 126 each include at least one right angle, and the first subpixel 122 and the second subpixel 124 each include at least one obtuse angle. For example, referring to fig. 1, in some examples, each of the first sub-pixel 122 and the second sub-pixel 124 includes three right angles, the first sub-pixel 122 and the second sub-pixel 124 may be obtained by removing two right angles from a rectangle, and in one pixel unit 12, the removed right angles of the first sub-pixel 122 and the second sub-pixel 126 include opposite right angles.

In some embodiments, the first subpixel 122, the second subpixel 124, and the third subpixel 126 include at least one obtuse angle. For example, referring to fig. 3, the first sub-pixel 122 includes six obtuse angles, the second sub-pixel 124 includes four obtuse angles, and the third sub-pixel 126 includes two obtuse angles, wherein the first sub-pixel 122 and the third sub-pixel 126 can be obtained by removing four right angles from a rectangle, and the second sub-pixel 124 can be obtained by removing two adjacent right angles from a rectangle. For another example, referring to fig. 4, the first sub-pixel 122 includes 3 obtuse angles, the second sub-pixel 124 includes four obtuse angles, and the third sub-pixel 126 includes two obtuse angles, wherein 2 right angles are removed from the rectangle for the first sub-pixel 122 and the second sub-pixel 124, and four adjacent right angles are removed from the rectangle for the third sub-pixel 124.

In some manners, each corner of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 may be a rounded corner.

In some embodiments, the side of the second sub-pixel 124 extending along the first direction x is disposed opposite to the side of the adjacent third sub-pixel 126 extending along the first direction x.

Similarly, under the condition of the same resolution, the second sub-pixel 124 and the third sub-pixel 126 can increase the pixel aperture area, reduce the driving current of the display device, and further increase the lifetime of the display device.

In some embodiments, the first sub-pixel 122 includes a first side 1222 opposite the third sub-pixel 126, and the first side 1222 is disposed parallel to a corresponding side of an adjacent third sub-pixel 126.

The distance between the first side 1222 and the side of the third sub-pixel 126 needs to be greater than or equal to the process limit distance to meet the process requirement.

In some embodiments, the angle between the first side edge 1222 and the line along the first direction x is greater than or equal to 0 ° and less than or equal to 45 °. For example, the angle of the first side edge 1222 relative to the line of the first direction x may be, but is not limited to, 30 °, 35 °, 40 °, 45 °, or the like.

In some embodiments, the third sub-pixel 126 has a square or trapezoid shape. For example, referring to fig. 1, in some examples, the third sub-pixel 126 is square, and referring to fig. 3 or fig. 4, in some examples, the third sub-pixel 126 is trapezoid, and the third sub-pixel 126 is isosceles trapezoid.

In some embodiments, the first sub-pixel 122 includes a second side 1224 opposite the second sub-pixel 124, the second side 1224 making an angle of less than 30 degrees with a corresponding side of an adjacent second sub-pixel 124.

The distance between the second side edge 1224 and the edge of the second sub-pixel 124 needs to be greater than or equal to the process limit distance to meet the process requirement.

For example, in some examples, the first subpixel 122 includes a second side 1224 opposite the second subpixel 124, the second side 1224 being disposed parallel to a corresponding side of an adjacent second subpixel 124.

In some embodiments, the first sub-pixel 122 is designed to be axisymmetric in the second direction y.

Specifically, the first subpixel 122 may be symmetrically disposed with respect to a straight line parallel to the second direction y and passing through the center P1 of the first subpixel 122.

In some embodiments, the second sub-pixel 124 is designed to be axisymmetric in the second direction y.

Specifically, the second subpixel 124 may be symmetrically disposed with respect to a straight line parallel to the second direction y and passing through the center P2 of the second subpixel 124.

In some implementations, the third sub-pixel 126 is designed to be axisymmetric in the second direction y.

Specifically, the third sub-pixel 126 may be symmetrically disposed with respect to a straight line parallel to the second direction y and passing through the center P3 of the third sub-pixel 126.

Of course, the symmetry axes of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 may not be limited to the above-discussed embodiments, and may be changed according to practical situations, and are not particularly limited herein.

With further reference to fig. 3, in some embodiments, two first sub-pixels 122 adjacently disposed in the first direction x are included between two third sub-pixels 126 adjacently disposed in the first direction x, and the two first sub-pixels 122 are symmetrically disposed with respect to a midperpendicular of the central connecting line of the two third sub-pixels 126 adjacently disposed.

In the present embodiment, a Real RGB pixel structure is adopted, that is, in each pixel unit 12, the number of sub-pixels is the same and is one. The first subpixel 122 and the second subpixel 124 are both hexagonal shaped, and the third subpixel 126 is trapezoidal shaped.

Referring to fig. 4, in some embodiments, the display panel 10 includes two first sub-pixels 122 symmetrically disposed with respect to a central connecting line of the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12, and the two first sub-pixels 122 symmetrically disposed with respect to the central connecting line of the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 share the second sub-pixel 124 and the third sub-pixel 126.

In the present embodiment, the first subpixel 122 is a pentagon, the second subpixel 124 is a hexagon, and the third subpixel 126 is a trapezoid.

At this time, for the pixel units 12 not located at the start and end positions in the first direction x, the adjacent pixel units 12 can share the second sub-pixel 124 and the third sub-pixel 126, so that the sub-pixels can achieve a high-resolution display effect by a low-resolution physical resolution through a color theory.

The present application also provides a display device including the display panel 10 of any one of the above embodiments.

In the display device of the present application, the connection line of the centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 is triangular, and in the pixel unit 12 arranged along the first direction x, the center P1 of the first sub-pixel 122 is on the same straight line, the center P1 of the second sub-pixel 126 is on the same straight line, the center P3 of the third sub-pixel 126 is on the same straight line, in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged, and the centers P2 of the second sub-pixel 124 and the center P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and the same column, and the rows are all at the same interval, therefore, the central point of the pixel unit combined by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is on the same straight line in the first direction x and the second direction y, thus, the image quality is ensured to be uniform, the granular sensation is reduced, and the display effect of the display panel 10 is better.

The display device may be any of various types of computer system apparatuses that are mobile or portable and perform wireless communication, for example. Specifically, the display device may be a mobile phone or a smart phone (e.g., an iPhone-based phone), a Portable game device (e.g., Nintendo DS, PlayStation Portable, game Advance, iPhone), a tablet computer, a Portable internet device, a data storage device, etc., and the display device 100 may also be other wearable devices (e.g., a smart band, a smart watch, AR glasses, VR glasses, etc.).

In some cases, the display device may perform a variety of functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). The display device may be a portable device such as a cellular telephone, media player, other handheld device, wrist watch device, earpiece device or other compact portable device, if desired.

Referring to fig. 5 to 9, the present application further provides a mask assembly for manufacturing the display panel 10 according to any of the above embodiments, where the mask assembly includes a first mask plate 20, a second mask plate 30, and a third mask plate 40. The first mask 20 includes a first substrate 22 and at least a first opening 24 opened in the first substrate 22, the first opening 24 has a shape identical to that of a light emitting device layer of a first sub-pixel 122 formed in the display panel 10, the second mask 30 includes a second substrate 32 and at least one second opening 34 opened in the second substrate 32, the second opening 34 has a shape identical to that of a light emitting device layer of a second sub-pixel 124 formed in the display panel 10, the third mask 40 includes a third substrate 42 and at least one third opening 44 opened in the third substrate 42, and the third opening 44 has a shape identical to that of a light emitting device layer of a third sub-pixel 126 formed in the display panel 10.

The mask assembly of the present application can be manufactured to form the display panel 10, a connecting line of centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 is triangular, and in the pixel unit 12 arranged along the first direction x, the center P1 of the first sub-pixel 122 is on the same straight line, the center P1 of the second sub-pixel 126 is on the same straight line, the center P3 of the third sub-pixel 126 is on the same straight line, in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged and the centers P2 of the second sub-pixel 124 and the center P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and the same column, and the same distance is formed between the rows and the center points of light emission of the pixel unit combined by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 are on the same straight line in the first direction x and the second direction y, thus, the image quality is ensured to be uniform, the granular sensation is reduced, and the display effect of the display panel 10 is better.

The light emitting device layer of the first sub-pixel 122, the light emitting device layer of the second sub-pixel 124, and the light emitting device layer of the third sub-pixel 126, which are adjacently formed, are connected to each other, and the sides of the light emitting device layer of the first sub-pixel 122, the light emitting device layer of the second sub-pixel 124, and the light emitting device layer of the third sub-pixel 126, which are formed, coincide.

The first and second openings 24, 34 are hexagonal in shape and the third opening 44 is quadrilateral in shape. For example, referring to fig. 5, the first opening 24 and the second opening 34 are hexagonal, and the third opening 44 is square, or referring to fig. 9 and 10, the first opening 24 and the second opening 34 are hexagonal, and the third opening 44 is isosceles trapezoid.

Further, referring to fig. 5-7, in the second direction y, the separation distance a between two adjacent first openings 24 is greater than or equal to the process distance. In the first direction x, the spacing distance b between two adjacent second openings 24 is greater than or equal to the process distance. It is to be understood that, since the first sub-pixels 122 are located in the first openings 24, the second sub-pixels 124 are located in the second openings 34, and the supporting pillars 14 are located between the first sub-pixels 122 in the second direction y and between the second sub-pixels 124 in the first direction x. Moreover, the supporting columns 14 are smaller than the process limit distance, so that the waste of the aperture opening ratio of the whole arrangement is small, the pixel aperture opening ratio of the sub-pixels is improved, and the service life of the display panel 10 is prolonged.

Referring to fig. 10, in some embodiments, two first sub-pixels 122 adjacently disposed in the first direction are included between two third sub-pixels 126 adjacently disposed in the first direction, and each first opening 24 covers two first sub-pixels 122 adjacently disposed in the first direction of the display panel 10.

In the present application, the FMM openings for evaporation of the adjacent first sub-pixels 126 are made in a 2in 1 manner, that is, each FMM pixel opening corresponds to 2 adjacent first sub-pixels 122, thereby improving the yield of the product.

In some embodiments, the first substrate 22, the second substrate 32, and the third substrate 42 are made of a metal material.

In this way, the first mask 20, the second mask 30, and the third mask 40 may be high-precision metal masks, and may be applied to an evaporation process, in which the corresponding display panel 10 is formed by evaporating organic light-emitting materials corresponding to pixel patterns.

In some embodiments, the Mask assembly further comprises a Cover Mask (Cover Mask), a support Mask (Howling Mask), and an alignment Mask (Align Mask). The first Mask plate 20, the second Mask plate 30, and the third Mask plate 40 may be combined with a cover Mask, a support Mask, and an alignment Mask to form a Mask Frame Assembly (MFA).

Therefore, the combined mask integrated frames can be respectively placed into corresponding evaporation chambers to evaporate the organic light-emitting materials corresponding to the sub-pixels. Specifically, a pattern of one sub-pixel may be formed each time vapor deposition is performed, another sub-pixel may be formed after the formation of the pattern of one sub-pixel, and the display panel 10 according to the embodiment of the present invention is obtained after the formation of the patterns of three sub-pixels.

Of course, in other embodiments, the display panel 10 is not limited to being formed by an evaporation process, and the display panel 10 may be formed by a photolithography process, an etching process, or the like as needed.

Referring to fig. 11, the present application further provides a manufacturing method of a display panel 10, for manufacturing the display panel 10 of the foregoing embodiment, the manufacturing method includes:

01, forming a first sub-pixel of the display panel by using a first mask plate through an evaporation process, wherein the first mask plate comprises at least one first opening, and the shape of the first opening is the same as that of a light-emitting device layer forming the first sub-pixel in the display panel;

02, forming a second sub-pixel of the display panel by using a second mask plate through an evaporation process, wherein the second mask plate comprises at least one second opening, and the shape of the second opening is the same as that of a light-emitting device layer forming the second sub-pixel in the display panel;

and 03, forming a third sub-pixel of the display panel by using a third mask plate through an evaporation process, wherein the third mask plate comprises at least one third opening, and the shape of the third opening is the same as that of a light-emitting device layer forming the third sub-pixel in the display panel.

In the manufacturing method of the embodiment of the application, the connecting line of the centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 is triangular, and in the pixel unit 12 arranged along the first direction x, the center P1 of the first sub-pixel 122 is on the same straight line, the center P1 of the second sub-pixel 126 is on the same straight line, the center P3 of the third sub-pixel 126 is on the same straight line, in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged, and the centers P2 of the second sub-pixel 124 and the center P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and the same column, and the rows and the columns are all at the same interval, and therefore, the light emitting center point of the pixel unit combined by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is on the same straight line in the first direction x and the second direction y, thus, the image quality is ensured to be uniform, the granular sensation is reduced, and the display effect of the display panel 10 is better.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (22)

1. A display panel is characterized by comprising pixel units which are arranged in an array mode, wherein each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the connecting lines of the centers of the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit are triangular, the centers of the first sub-pixels in the pixel unit which is arranged along a first direction are on the same straight line, the centers of the second sub-pixels are on the same straight line and the centers of the third sub-pixels are on the same straight line, the second sub-pixels and the third sub-pixels in the pixel unit which is arranged along a second direction are alternately arranged, and the centers of the second sub-pixels and the third sub-pixels are on the same straight line;

a straight line passing through the center of the first sub-pixel in the first direction is located between a straight line passing through the center of the second sub-pixel in the first direction and a straight line passing through the center of the third sub-pixel in the first direction.

2. The display panel according to claim 1, wherein a distance between a straight line passing through the center of the first subpixel in the first direction and a straight line passing through the center of the third subpixel in the first direction is less than or equal to a distance between a straight line passing through the center of the first subpixel in the first direction and a straight line passing through the center of the second subpixel in the first direction.

3. The display panel according to claim 1, wherein the display panel comprises a support pillar located between two adjacent second sub-pixels in the first direction and located between two adjacent first sub-pixels in the second direction.

4. The display panel according to claim 3, wherein a straight line passing through the center of the first sub-pixel in the second direction passes through a region where the supporting column is located.

5. The display panel of claim 4, wherein the support posts have a dimension less than a process threshold distance.

6. The display panel according to claim 3, wherein the first sub-pixel is disposed opposite to the support pillar along a side extending in the first direction, and wherein the second sub-pixel is disposed opposite to the support pillar along a side extending in the second direction.

7. The display panel according to claim 3, wherein the support columns are square.

8. The display panel of claim 1, wherein the first sub-pixel is hexagonal, the second sub-pixel is hexagonal, and the third sub-pixel is quadrilateral.

9. The display panel according to claim 8, wherein a side of the second subpixel extending in the first direction is disposed opposite to a side of the adjacent third subpixel extending in the first direction.

10. The display panel according to claim 8, wherein the first sub-pixel comprises a first side opposite to the third sub-pixel, and the first side is parallel to a corresponding side of the adjacent third sub-pixel.

11. The display panel according to claim 8, wherein an included angle between the first side edge and a straight line along the first direction is greater than or equal to 0 ° and less than or equal to 45 °.

12. The display panel according to claim 11, wherein the third sub-pixel has a square or trapezoid shape.

13. The display panel according to claim 8, wherein the first sub-pixel comprises a second side edge opposite to the second sub-pixel, and the second side edge forms an angle smaller than 30 degrees with a corresponding edge of the adjacent second sub-pixel.

14. The display panel of claim 1, wherein the first sub-pixel comprises a green sub-pixel, the second sub-pixel comprises a blue sub-pixel, and the third sub-pixel comprises a red sub-pixel.

15. The display panel according to claim 1, wherein in the second direction, the first sub-pixel is in an axisymmetric design, the second sub-pixel is in an axisymmetric design, and the third sub-pixel is in an axisymmetric design.

16. The display panel according to claim 1, wherein two of the first sub-pixels adjacently arranged in the first direction are included between two of the third sub-pixels adjacently arranged in the first direction, and the two of the first sub-pixels are symmetrically arranged with respect to a perpendicular bisector of a center-connecting line of the two of the third sub-pixels adjacently arranged.

17. The display panel according to claim 16, wherein the display panel comprises two first sub-pixels symmetrically arranged with respect to a center-line of a second sub-pixel and a third sub-pixel in the pixel unit, and the two first sub-pixels symmetrically arranged with respect to the center-line of the second sub-pixel and the third sub-pixel in the pixel unit share the second sub-pixel and the third sub-pixel.

18. The display panel of claim 17, wherein the first sub-pixel has a pentagonal shape, the second sub-pixel has a hexagonal shape, and the third sub-pixel has a quadrangular shape.

19. A display device characterized by comprising the display panel according to any one of claims 1 to 18.

20. A mask assembly for fabricating the display panel of any one of claims 1 to 19, wherein the mask assembly comprises:

the first mask plate comprises a first substrate and at least one first opening arranged on the first substrate, and the shape of the first opening is the same as that of a light-emitting device layer of the display panel for forming the first sub-pixel;

the second mask plate comprises a second substrate and at least one second opening arranged on the second substrate, and the shape of the second opening is the same as that of a light-emitting device layer forming the second sub-pixel in the display panel;

and the third mask plate comprises a third substrate and at least one third opening arranged on the third substrate, and the shape of the third opening is the same as that of the light-emitting device layer forming the third sub-pixel in the display panel.

21. A mask assembly according to claim 20, wherein two of the first sub-pixels adjacently arranged in the first direction are included between two of the third sub-pixels adjacently arranged in the first direction, and each of the first openings covers two of the first sub-pixels adjacently arranged in the first direction of the display panel.

22. A method for manufacturing a display panel, for manufacturing the display panel according to any one of claims 1 to 18, the method comprising:

forming the first sub-pixel of the display panel by using a first mask plate through an evaporation process, wherein the first mask plate comprises at least one first opening, and the shape of the first opening is the same as that of a light-emitting device layer forming the first sub-pixel in the display panel;

forming the second sub-pixels of the display panel by using a second mask plate through an evaporation process, wherein the second mask plate comprises at least one second opening, and the shape of the second opening is the same as that of a light-emitting device layer forming the second sub-pixels in the display panel;

and forming the third sub-pixels of the display panel by using a third mask plate through an evaporation process, wherein the third mask plate comprises at least one third opening, and the shape of the third opening is the same as that of a light-emitting device layer forming the third sub-pixels in the display panel.

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