CN109920817B - Pixel structure and mask plate - Google Patents
Pixel structure and mask plate Download PDFInfo
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- CN109920817B CN109920817B CN201711331505.6A CN201711331505A CN109920817B CN 109920817 B CN109920817 B CN 109920817B CN 201711331505 A CN201711331505 A CN 201711331505A CN 109920817 B CN109920817 B CN 109920817B
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Abstract
The embodiment of the invention relates to the technical field of display, in particular to a pixel structure and a mask plate, and aims to solve the problem that a manufactured metal mask plate is etched and perforated due to a triangular Delta pixel structure in the prior art. The pixel structure comprises a plurality of pixels, the PPI of the pixels is a preset value, and sub-pixels in the pixels are arranged in a triangular Delta manner; the plurality of pixels comprise a first pixel and a second pixel which are positioned on different rows and are adjacent; the oblique angle distance from the preset sub-pixel of the first pixel to the preset sub-pixel of the second pixel is the distance from the vertex of the preset sub-pixel of the first pixel to the oblique edge of the preset sub-pixel of the second pixel; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel. Therefore, the problem that the manufactured metal mask plate is etched and perforated due to the fact that the bevel angle distance of the same sub-pixel in adjacent pixels in the triangular Delta pixel structure in the prior art is too small can be solved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a pixel structure and a mask plate.
Background
An Organic Light-emitting Diode (OLED) is mainly used to display images of multiple colors by using red, green, and blue sub-pixels. In the manufacturing process of the pixel light-emitting area, the light-emitting materials of the red, green and blue sub-pixels are respectively evaporated to the pixel light-emitting area through the opening area of the metal mask plate. The metal mask plate for vapor deposition is provided with an opening region for vapor deposition of a luminescent material.
A common Pixel Definition Layer (PDL) arrangement is shown in fig. 1, where a Pixel 110 is composed of three sub-pixels arranged in a triangle Delta, each Pixel 110 includes a red sub-Pixel 111, a green sub-Pixel 112, and a blue sub-Pixel 113, and an interval between every two sub-pixels of the same color can be represented by three parameters: Rib-X, Rib-Y, Rib-bevel. Taking the mask 200 corresponding to the red sub-pixel 111 as an example, as shown in fig. 2, the red sub-pixel 111 corresponds to the mask openings 210, the distance between the adjacent openings 210 in the same row is Rib-X pitch, the distance between the openings 210 in the same column in two interlaced lines is Rib-Y pitch, and the closest distance between the two openings 210 closest to each other in the adjacent row is Rib-oblique pitch. In the etching process of the metal mask plate corresponding to the triangular pixel arrangement structure, usually, due to the fact that the Rib-oblique angle distance between the two openings is too small, the phenomenon of etching and punching occurs, and then the subsequent evaporation coating of the luminescent material is influenced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a pixel structure and a metal mask plate, so as to solve the problem in the prior art that an etching perforation occurs in a manufactured metal mask plate due to too small oblique angle distance between sub-pixels of the same type in adjacent pixels and located in different rows in a triangular Delta pixel structure.
The embodiment of the invention provides a pixel structure, which comprises a plurality of pixels, wherein the PPI (pixel density) of the pixels is a preset value, and sub-pixels in the pixels are arranged in a triangular Delta manner;
the plurality of pixels comprise a first pixel and a second pixel which are positioned on different rows and adjacent;
the oblique angle distance from the preset sub-pixel of the first pixel to the preset sub-pixel of the second pixel is the closest distance from the vertex of the preset sub-pixel of the second pixel to the oblique edge of the preset sub-pixel of the first pixel; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel.
Optionally, the preset sub-pixels are polygons with the number of sides being greater than or equal to 5, and a distance between two adjacent preset sub-pixels in the same row is greater than the oblique angle distance.
Optionally, six sub-pixels are adjacently arranged around each third sub-pixel in the plurality of pixels; the six sub-pixels are first sub-pixels and second sub-pixels which are arranged alternately.
Optionally, the oblique side of the preset sub-pixel is adjacent to the third sub-pixel.
Optionally, the area of the preset sub-pixel is equal to the area of a preset rectangle; the first side length of the preset rectangle is the length of the first side of the preset sub-pixel, and the second side length of the preset rectangle is the distance between the second side or the first vertex of the preset sub-pixel and the first side; the first edge is the opposite side of the second edge or the first vertex, and the length of the first edge is greater than that of the second edge.
Optionally, the first sub-pixel and the second sub-pixel of each of the plurality of pixels are arranged inverted with respect to each other.
Optionally, a distance between two adjacent third sub-pixels in the same row is greater than or equal to a length of the second edge.
Optionally, the third sub-pixel is a hexagon, and the preset sub-pixel is a pentagon or a hexagon.
The embodiment of the invention provides a mask plate, which is used for preparing a preset sub-pixel in a pixel structure provided in any one of the embodiments; the mask plate includes: a mask substrate; and at least one row of first openings which are positioned on the mask substrate and have the same shape as the preset sub-pixels.
The embodiment of the invention provides a mask plate, which is used for preparing a third sub-pixel in a pixel structure provided in any one of the embodiments; the mask plate comprises a mask substrate; at least one row of second openings which are positioned on the mask substrate and have the same shape as the third sub-pixels; the distance between two adjacent second openings in each row is greater than or equal to the maximum width of the third sub-pixel along the row direction, or the distance is greater than or equal to the length of the second edge of the preset sub-pixel; the second edge is an adjacent edge of a bevel edge adjacent to the third sub-pixel in the preset sub-pixel.
The pixel structure provided by the embodiment of the invention comprises a plurality of pixels, wherein the PPI (pixel density) of the pixels is a preset value, and sub-pixels in the pixels are arranged in a triangular Delta manner; the plurality of pixels comprise a first pixel and a second pixel which are positioned on different rows and are adjacent; the oblique angle distance from the preset sub-pixel of the first pixel to the preset sub-pixel of the second pixel is the closest distance from the vertex of the preset sub-pixel of the second pixel to the oblique edge of the preset sub-pixel of the first pixel; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel. Therefore, the bevel angle distance between the preset sub-pixels in the adjacent pixels in the pixel structure is larger than the bevel angle distance between two rectangular sub-pixels in the adjacent pixels with the pixel density being a preset value, and the problem that the manufactured metal mask plate is etched and perforated due to the fact that the bevel angle distance between the sub-pixels of the same type in the adjacent pixels in different rows in the triangular Delta pixel structure in the prior art is too small can be solved.
Drawings
FIG. 1 is a schematic diagram of a pixel arrangement of three sub-pixels arranged in Delta in the prior art;
FIG. 2 is a schematic diagram of a mask corresponding to the red sub-pixel in FIG. 1;
FIG. 3 is a diagram illustrating a pixel structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of bevel distance provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of another pixel structure according to an embodiment of the present invention;
fig. 6 is a second schematic diagram of a pixel structure according to an embodiment of the invention;
fig. 7 is a schematic diagram illustrating a first sub-pixel arrangement structure in the pixel structure according to fig. 6 according to an embodiment of the present invention;
fig. 8 is a third schematic view of a pixel structure according to an embodiment of the invention;
fig. 9 is a fourth schematic view of a pixel structure according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment of the invention, the shape of each sub-pixel in the pixels with triangular Delta arrangement in the prior art shown in fig. 1 is set, so that the problem of etching and perforation of a manufactured metal mask plate caused by too small oblique angle distance between sub-pixels of the same type in different rows and adjacent pixels in the prior art is solved.
The following describes a specific implementation of the pixel structure provided by the embodiment of the present invention in detail with reference to the accompanying drawings.
FIG. 3 is a diagram illustrating a pixel structure according to an embodiment of the present invention; as shown in fig. 3, the pixel structure includes a plurality of Pixels, and a pixel density (Pixels Per inc, PPI for short) of the plurality of Pixels is a predetermined value. The sub-pixels in each pixel are arranged in a triangular Delta arrangement, such as the first pixel 310 shown in fig. 3, wherein the first sub-pixel 311, the second sub-pixel 312 and the third sub-pixel 313 are in a "piny" shape.
The plurality of pixels in the pixel structure comprise a first pixel 310 and a second pixel 320 which are positioned on different rows and are adjacent; the oblique angle distance from the preset sub-pixel of the second pixel 320 to the preset sub-pixel of the first pixel 310 is the closest distance from the vertex of the preset sub-pixel of the second pixel 320 to the oblique edge of the preset sub-pixel of the first pixel 310; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel.
In a specific embodiment, as shown in fig. 3, the first row includes a plurality of first pixels 310, and the first pixels 310 include a first sub-pixel 311, a second sub-pixel 312, and a third sub-pixel 313. The second row includes a plurality of second pixels 320, and the second pixels 320 include a first subpixel 321, a second subpixel 322, and a third subpixel 323.
Taking the predetermined sub-pixel as the first sub-pixel, based on fig. 3, the predetermined sub-pixel in the first pixel 310 is the first sub-pixel 311 and the predetermined sub-pixel in the second pixel 320 is the first sub-pixel 321. Based on fig. 3, an example of presetting the oblique angle distance that the pixel is the first sub-pixel is provided below.
FIG. 4 illustrates a schematic diagram of the bevel distance provided by an embodiment of the present invention.
As shown in fig. 4, in one aspect, the dashed rectangle 410 is the shape of the first sub-pixel in the pixel structure shown in fig. 1, and the oblique angle distance between two first sub-pixels located in adjacent rows is the distance d2 between the vertices C, D of two rectangles.
On the other hand, the oblique distance between the first sub-pixel 321 and the first sub-pixel 311 provided by the embodiment of the present invention is the closest distance D1 between the vertex D of the first sub-pixel 321 and the oblique side AB of the first sub-pixel 311, and the closest distance may be from the point D to any point on the oblique side AB, for example, the oblique distance shown in fig. 3 is the distance between the point D and the point a on the oblique side AB.
In combination with the above two aspects, since the distance from point D to any point on the oblique side AB is greater in the embodiment of the present invention than the distance from point D to point C, the oblique distance D1 in the embodiment of the present invention is greater than the oblique distance D2 in the prior art.
The pixel structure provided by the embodiment of the invention comprises a plurality of pixels, wherein the PPI (pixel density) of the pixels is a preset value, and sub-pixels in the pixels are arranged in a triangular Delta manner; the plurality of pixels comprise a first pixel and a second pixel which are positioned on different rows and are adjacent; the oblique angle distance from the preset sub-pixel of the first pixel to the preset sub-pixel of the second pixel is the closest distance from the vertex of the preset sub-pixel of the second pixel to the oblique edge of the preset sub-pixel of the first pixel; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel. Therefore, the bevel angle distance between the preset sub-pixels in the adjacent pixels in the pixel structure is larger than the bevel angle distance between two rectangular sub-pixels in the adjacent pixels with the pixel density being a preset value, and the problem that the manufactured metal mask plate is etched and perforated due to the fact that the bevel angle distance between the sub-pixels of the same type in the adjacent pixels in different rows in the triangular Delta pixel structure in the prior art is too small can be solved.
In the embodiment of the invention, each pixel comprises a first sub-pixel, a second sub-pixel and a third sub-pixel. In the above embodiment, in order to increase the oblique angle distance between the predetermined sub-pixel in the first pixel and the predetermined sub-pixel in the second pixel, optionally, the shape of the predetermined sub-pixel may include an oblique edge. Therefore, the oblique angle distance between the preset sub-pixel in the first pixel and the preset sub-pixel in the second pixel which is in different rows and adjacent to one side of the oblique edge can only be ensured to be larger.
Preferably, the shape of the predetermined sub-pixel comprises at least two oblique sides. The predetermined sub-pixel may be the first sub-pixel or the second sub-pixel, that is, the first sub-pixel and the second sub-pixel each include at least two oblique sides. Optionally, the predetermined sub-pixel may also be a third sub-pixel, and then the third sub-pixel also includes two oblique sides. The following description will be given by taking the pixel arrangement structure shown in fig. 3 as an example.
Based on fig. 3, fig. 5 schematically illustrates a pixel structure provided by the embodiment of the invention; as shown in fig. 5, there are three rows and three columns of pixels in the pixel structure, wherein the first row includes three first pixels 310, the second row includes three second pixels 320, and the third row includes three first pixels 310, and the first pixels 310 and the second pixels 320 are alternately arranged in each column. Taking the second pixel 320 in the second row and the second column as an example, four adjacent and different rows of the first sub-pixels 311 exist around the first sub-pixels 321-22 included in the second pixel 320, which are: a first sub-pixel 311-12 in a second column of the first row, a first sub-pixel 311-13 in a third column of the first row, a first sub-pixel 311-32 in a second column of the third row, and a first sub-pixel 311-33 in a third column of the third row.
Wherein, the oblique angle distance from the first sub-pixel 321-22 to the first sub-pixel 311-12 is the distance from the top point of the upper left corner of the first sub-pixel 321-22 to the oblique edge of the lower right corner of the first sub-pixel 311-12; the oblique angle distance from the first sub-pixel 321-22 to the first sub-pixel 311-13 is the distance from the vertex of the upper right corner of the first sub-pixel 321-22 to the oblique side of the lower left corner of the first sub-pixel 311-13; the oblique angle distance from the first sub-pixel 321-22 to the first sub-pixel 311-32 is the distance from the vertex of the upper right corner of the first sub-pixel 311-32 to the oblique side of the lower left corner of the first sub-pixel 321-22; the oblique angle distance from the first sub-pixel 321-22 to the first sub-pixel 311-33 is the distance from the vertex of the upper left corner of the first sub-pixel 311-33 to the oblique side of the lower right corner of the first sub-pixel 321-22.
Based on the above embodiments, it can be seen that, when the shape of the predetermined sub-pixels includes at least two oblique sides, it can be ensured that the oblique angle distance between the predetermined sub-pixels and all the adjacent predetermined sub-pixels located in different rows is larger than that in the prior art. Optionally, at least two oblique sides exist in the shape of the preset sub-pixel: the distance between one oblique edge and the sub-pixels which are in the same row and adjacent to the oblique edge on the first side is the same as the distance between the other oblique edge and the sub-pixels which are in the same row and adjacent to the oblique edge on the second side, and the first side and the second side are two sides of the preset sub-pixels along the row direction.
The following describes the shape of the predetermined sub-pixel in detail.
In an alternative embodiment, the predetermined sub-pixels are polygons with the number of sides greater than or equal to 5.
Taking the preset sub-pixel as the first sub-pixel, as shown in fig. 5, according to the position relationship among the first sub-pixel 311-12, the first sub-pixel 311-13 and the first sub-pixel 311-22, since the oblique angle distance between the first sub-pixel 311-12 and the first sub-pixel 311-22 is smaller, the distance between the openings of the mask used for manufacturing the first sub-pixel 311-12 and the first sub-pixel 311-22 is easily smaller, and etching breakdown occurs in the process of manufacturing the openings of the mask, therefore, the scheme provided in the embodiment of the present invention increases the oblique angle distance between the first sub-pixel 311-12 and the first sub-pixel 311-22. As shown in fig. 5, the distance between the first sub-pixels 311-12 and the first sub-pixels 311-13 is the same as the distance between two adjacent red sub-pixels 111 (i.e., the dashed-line boxes 410 in fig. 4) located in the same row in fig. 2. That is, compared to the pixel structure shown in fig. 2, the pixel structure shown in fig. 5 increases the oblique angle distance between two adjacent first sub-pixels (e.g., the first sub-pixels 311-12 and the first sub-pixels 311-22 in fig. 5) in different rows, and the distance between two adjacent first sub-pixels (e.g., the first sub-pixels 311-12 and the first sub-pixels 311-13) in the same row is unchanged from that in fig. 2.
Fig. 6 schematically shows a second schematic diagram of a pixel structure provided by the embodiment of the invention.
As shown in fig. 6, the pixel structure includes a first pixel 610 and a second pixel 620 located in different rows and adjacent to each other, wherein the first pixel 610 includes a first sub-pixel 611, a second sub-pixel 612, and a third sub-pixel 613; the second pixel 620 includes a first subpixel 621, a second subpixel 622, and a third subpixel 623.
Taking the predetermined sub-pixel as the first sub-pixel as an example, fig. 7 is a schematic diagram of a first sub-pixel arrangement structure based on the pixel structure in fig. 6. As shown in fig. 7, the first sub-pixels 621-21 of the second pixel 620 have an oblique angle distance d1 from the first sub-pixel 611-11 of the first pixel 610. d1 is larger than d2 compared to d2(d2 is the distance between two adjacent red sub-pixels located in different rows in fig. 2), but the distance d3 between two adjacent first sub-pixels (e.g., the first sub-pixels 611-11 and the first sub-pixels 611-12) located in the same row is smaller than d4(d4 is the distance between two adjacent red sub-pixels located in the same row in fig. 2). That is, compared to the pixel structure in fig. 2, the pixel structure shown in fig. 6 not only increases the oblique angle distance between two adjacent first sub-pixels located in different rows, but also decreases the distance between two adjacent first sub-pixels located in the same row.
As can be seen from the pixel structures shown in fig. 3 and fig. 6, compared with the pixel structure in fig. 1, the method for increasing the oblique angle distance between two adjacent sub-pixels located in different rows at least includes the following two methods:
in the first embodiment, the area of the preset sub-pixel is reduced, and the inclined edge is arranged; the specific implementation manner is shown in the embodiment and fig. 3;
in the second embodiment, the specific implementation manner is shown in the above example and fig. 6 by reducing the distance between two adjacent preset sub-pixels in the same row and keeping the area unchanged.
The specific implementation is not limited to the above two modes. For example, the area of the preset sub-pixel can be increased, and the bevel edge can be arranged; but this approach can result in a reduced pixel density. For another example, the distance between two adjacent preset sub-pixels in the same row may be reduced, and the area of the preset sub-pixels may be reduced. In order to maintain the light emission life and the pixel density as much as possible, the second embodiment described above may be preferably employed.
In the second embodiment, the distance between two adjacent pre-defined sub-pixels in the same row is reduced, and if the distance is too small, the two mask openings for making two adjacent pre-defined sub-pixels in the same row may have through-etching holes. To avoid this problem, it is preferable that the predetermined sub-pixels are polygons with the number of sides being greater than or equal to 5, and a distance between two adjacent predetermined sub-pixels in the same row is greater than the oblique angle distance. Therefore, the mask plate etching perforation can be avoided under the condition of ensuring the oblique angle distance, and the mask plate etching perforation can be avoided even if the distance between two adjacent preset sub-pixels in the same row is ensured.
In the embodiment of the present invention, the predetermined sub-pixels may be pentagonal as shown in fig. 6, or hexagonal. In a specific embodiment, each pixel in the pixel structure may have sub-pixels with various shapes, for example, the shape of the first sub-pixel and the shape of the second sub-pixel in one pixel may be the same, such as polygons with the number of sides greater than 4, which is more common to be a pentagon or a hexagon; the first sub-pixel and the second sub-pixel in one pixel may also be polygons with different shapes and the number of sides being greater than 4, for example, the first sub-pixel is a pentagon and the second sub-pixel is a hexagon. Optionally, the shape of the third sub-pixel is not limited, and in order to ensure the light emitting life of a panel with a certain area, the third sub-pixel may be set to be a polygon with a number of sides greater than 4.
Fig. 8 schematically shows a third schematic diagram of a pixel structure provided by the embodiment of the invention. As shown in fig. 8, the pixel structure includes a first pixel 810 and a second pixel 820 which are adjacent to each other and located in different rows, wherein the first pixel 810 includes a first sub-pixel 811, a second sub-pixel 812 and a third sub-pixel 813; the second pixel 820 includes a first sub-pixel 821, a second sub-pixel 822, and a third sub-pixel 823. The first sub-pixel and the second sub-pixel are hexagonal.
Alternatively, as shown by a dashed box 830 in fig. 8, six sub-pixels are adjacently arranged around each third sub-pixel in the plurality of pixels; the six sub-pixels are first sub-pixels and second sub-pixels which are alternately arranged. Preferably, the oblique side of the predetermined sub-pixel is adjacent to the third sub-pixel. Thus, the pixel density of the panel can be improved.
Alternatively, the first sub-pixel and the second sub-pixel of each of the plurality of pixels are arranged inverted with respect to each other. Therefore, the distance between two adjacent first sub-pixels and second sub-pixels can be reduced, and the pixel density on a panel with a certain area is improved.
In an alternative embodiment, the area of the predetermined sub-pixel is equal to the area of the predetermined rectangle; the first side length of the preset rectangle is the length of the first side of the preset sub-pixel, and the second side length of the preset rectangle is the distance between the second side or the first top point of the preset sub-pixel and the first side; the first edge is the opposite side of the second edge or the first vertex, and the length of the first edge is larger than that of the second edge.
If the first edge is opposite to the first vertex, for example, taking the first sub-pixel 611 shown in fig. 6 as an example, the first vertex is a vertex close to the second pixel 620 in an adjacent row, and the first vertex of the first pixel 611 is adjacent to the first vertex of the second sub-pixel 622 of the adjacent second pixel 620 in a different row.
For example, in the case of the first sub-pixel 811 shown in fig. 8, the edge of the first sub-pixel 811 located in the middle of the two oblique edges is the second edge, and the second edge of the first sub-pixel 811 is adjacent to the second edge of the adjacent second sub-pixel 822 located in a different row of the first sub-pixel 811.
Fig. 9 schematically shows a fourth schematic diagram of a pixel structure provided by the embodiment of the invention. A second side of the first subpixel 911 in the first pixel 910 and a second side of the second subpixel 922 in the second pixel 920 shown in fig. 9 are adjacent and equal, and the second side in fig. 9 is shorter than the second side in fig. 8. If the third sub-pixels with the same size are used, the distance between two adjacent third sub-pixels in the same row in fig. 9 is smaller than that in fig. 8, that is, when the third sub-pixels in fig. 9 are prepared by using one mask, the probability of the prepared mask causing the etching through holes is higher.
Preferably, the distance between two adjacent third sub-pixels in the same row is greater than or equal to the length of the second edge. Therefore, the distance between two adjacent third sub-pixels in the same row can be ensured not to be too small as much as possible, so that the problem of etching perforation between openings of the mask plate for preparing the third sub-pixels is caused.
Optionally, the third sub-pixel is a hexagon, and the preset sub-pixel is a pentagon or a hexagon. Therefore, the pixel manufacturing process is more simplified, and the light emitting life of the pixel can be ensured.
Based on the same inventive concept, the embodiment of the invention also provides a mask plate, which is used for preparing the preset sub-pixels in the pixel structure in any embodiment; the mask plate comprises a mask substrate and at least one row of first openings which are positioned on the mask substrate and have the same shape as the preset sub-pixels. The shape of the first opening of the mask may refer to the above embodiments of the first sub-pixel or the second sub-pixel of the pixel structure, and repeated descriptions are omitted.
In the embodiment of the invention, as the second sub-pixel exists between two adjacent first sub-pixels in the same row and the first sub-pixel exists between two adjacent second sub-pixels in the same row, etching through holes do not appear between the openings of the mask plate for preparing the first sub-pixels or the second sub-pixels.
Optionally, when the shapes of the first sub-pixel and the second sub-pixel are different, the two mask plates may be used to respectively fabricate the first sub-pixel and the second sub-pixel.
When the first sub-pixel and the second sub-pixel have the same shape, the first sub-pixel and the second sub-pixel can be manufactured twice by using one mask.
For example, when the first sub-pixel and the second sub-pixel have the same shape and are inverted, the specific implementation of the first sub-pixel and the second sub-pixel is as follows:
firstly, forming a first sub-pixel in a pixel structure by using a mask plate;
and then, selecting the mask plate for 180 degrees to form a second sub-pixel in the pixel structure.
Based on the same inventive concept, the embodiment of the invention further provides another mask plate for preparing a third sub-pixel in the pixel structure in any one of the embodiments; the mask plate comprises a mask substrate and at least one row of second openings which are located on the mask substrate and have the same shape as the third sub-pixels. The shape of the second opening of the mask can be referred to the embodiment of the third sub-pixel of the pixel structure, and repeated details are not repeated.
In the embodiment of the invention, the distance between two adjacent second openings in each row is greater than or equal to the maximum width of the third sub-pixel along the row direction, or the distance is greater than or equal to the length of the second edge of the preset sub-pixel; the second edge is an adjacent edge of a bevel edge adjacent to the third sub-pixel in the preset sub-pixel.
If the distance between two adjacent third sub-pixels in the same row is relatively large, and the phenomenon of etching through holes is not likely to occur, for example, the pixel structure is as shown in fig. 8, a mask plate may be used to fabricate the third sub-pixels.
If the distance between two adjacent third sub-pixels in the same row is too small, for example, the pixel structure is as shown in fig. 6, when one mask is used to prepare the third sub-pixels, etching through holes are easily formed between openings of the mask used to prepare the third sub-pixels in the same row and adjacent to each other. In order to solve this problem, the third sub-pixel may be prepared using two mask plates, and the distance between each mask plate is equal to or greater than the maximum width of the third sub-pixel in the row direction.
In the embodiment of the invention, the pixel structure comprises a plurality of pixels, the PPI of the pixels is a preset value, and the sub-pixels in the pixels are arranged in a triangular Delta manner; the plurality of pixels comprise a first pixel and a second pixel which are positioned on different rows and are adjacent; the oblique angle distance from the preset sub-pixel of the first pixel to the preset sub-pixel of the second pixel is the closest distance from the vertex of the preset sub-pixel of the second pixel to the oblique edge of the preset sub-pixel of the first pixel; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel. Therefore, the bevel angle distance between the preset sub-pixels in the adjacent pixels in the pixel structure is larger than the bevel angle distance between two rectangular sub-pixels in the adjacent pixels with the pixel density being a preset value, and the problem that the metal mask plate for manufacturing the pixel structure is etched and perforated due to the fact that the bevel angle distance between the sub-pixels of the same type in the adjacent pixels in different rows in the triangular Delta pixel structure in the prior art is too small can be solved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A pixel structure is characterized by comprising a plurality of pixels, wherein the PPI of the pixels is a preset value, and sub-pixels in the pixels are arranged in a triangular Delta manner;
the plurality of pixels comprise a first pixel and a second pixel which are positioned on different rows and adjacent;
the oblique angle distance from the preset sub-pixel of the first pixel to the preset sub-pixel of the second pixel is the closest distance from the vertex of the preset sub-pixel of the second pixel to the oblique edge of the preset sub-pixel of the first pixel; the preset sub-pixel is a first sub-pixel or a second sub-pixel in the pixel;
the preset sub-pixels are polygons with the number of sides being more than or equal to 5, and the distance between two adjacent preset sub-pixels in the same row is larger than the oblique angle distance;
six sub-pixels are adjacently arranged around each third sub-pixel in the plurality of pixels; the six sub-pixels are first sub-pixels and second sub-pixels which are alternately arranged; the bevel edge of the preset sub-pixel is adjacent to the third sub-pixel;
the distance between two adjacent third sub-pixels in the same row is greater than or equal to the length of the second edge of the preset sub-pixel; the second edge is the opposite edge of the first edge of the preset sub-pixel; the first edge is the second edge or the opposite edge of the first vertex of the preset sub-pixel.
2. The pixel structure of claim 1, wherein the first and second sub-pixels of each of the plurality of pixels are arranged inverted with respect to each other.
3. The pixel structure of claim 1, wherein the area of the predetermined sub-pixel is equal to the area of a predetermined rectangle;
the first side length of the preset rectangle is the length of the first side of the preset sub-pixel, and the second side length of the preset rectangle is the distance between the second side or the first vertex of the preset sub-pixel and the first side; the length of the first side is greater than the length of the second side.
4. The pixel structure according to claim 1, wherein the third sub-pixel is a hexagon, and the predetermined sub-pixel is a pentagon or a hexagon.
5. A mask for preparing a predetermined sub-pixel in the pixel structure according to any one of claims 1 to 4; the mask plate includes:
a mask substrate;
and at least one row of first openings which are positioned on the mask substrate and have the same shape as the preset sub-pixels.
6. A mask for fabricating a third sub-pixel in the pixel structure according to any one of claims 1 to 4; the mask plate includes:
a mask substrate;
at least one row of second openings which are positioned on the mask substrate and have the same shape as the third sub-pixels;
the distance between two adjacent second openings in each row is greater than or equal to the maximum width of the third sub-pixel along the row direction, or the distance is greater than or equal to the length of the second edge of the preset sub-pixel; the second edge is an adjacent edge of a bevel edge adjacent to the third sub-pixel in the preset sub-pixel.
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| CN201711331505.6A CN109920817B (en) | 2017-12-13 | 2017-12-13 | Pixel structure and mask plate |
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| CN109920817B true CN109920817B (en) | 2021-09-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5311337A (en) * | 1992-09-23 | 1994-05-10 | Honeywell Inc. | Color mosaic matrix display having expanded or reduced hexagonal dot pattern |
| US20130113363A1 (en) * | 2011-11-03 | 2013-05-09 | Samsung Mobile Display Co., Ltd. | Pixel Arrangement Structure for Organic Light Emitting Diode Display |
| CN104362170A (en) * | 2014-11-28 | 2015-02-18 | 京东方科技集团股份有限公司 | Organic electroluminescence display appliance and driving method and related device thereof |
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2017
- 2017-12-13 CN CN201711331505.6A patent/CN109920817B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5311337A (en) * | 1992-09-23 | 1994-05-10 | Honeywell Inc. | Color mosaic matrix display having expanded or reduced hexagonal dot pattern |
| US20130113363A1 (en) * | 2011-11-03 | 2013-05-09 | Samsung Mobile Display Co., Ltd. | Pixel Arrangement Structure for Organic Light Emitting Diode Display |
| CN104362170A (en) * | 2014-11-28 | 2015-02-18 | 京东方科技集团股份有限公司 | Organic electroluminescence display appliance and driving method and related device thereof |
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| CN109920817A (en) | 2019-06-21 |
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