CN111697025A - OLED display device, display panel, display device and manufacturing method - Google Patents
OLED display device, display panel, display device and manufacturing method Download PDFInfo
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- CN111697025A CN111697025A CN201910183609.XA CN201910183609A CN111697025A CN 111697025 A CN111697025 A CN 111697025A CN 201910183609 A CN201910183609 A CN 201910183609A CN 111697025 A CN111697025 A CN 111697025A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000001704 evaporation Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000008020 evaporation Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 229920001621 AMOLED Polymers 0.000 description 4
- 239000011368 organic material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The invention discloses an OLED display device, a display panel, a display device and a manufacturing method, wherein the manufacturing method comprises the following steps: the display device comprises a plurality of first-type sub-pixel rows and a plurality of second-type sub-pixel groups, wherein the first-type sub-pixel rows comprise first sub-pixels and sub-pixel groups which are alternately arranged along a first direction, and the sub-pixel groups are composed of a plurality of second sub-pixels; and a plurality of second-type sub-pixel rows including third sub-pixels and sub-pixel groups alternately arranged in a first direction, the first-type sub-pixel rows and the second-type sub-pixel rows alternately arranged in a second direction perpendicular to the first direction; the sub-pixel group is composed of two second sub-pixels, the first sub-pixel is multiplexed by four full-color pixel units respectively formed by one second sub-pixel in each sub-pixel group adjacent in the row direction and adjacent in the column direction, and the third sub-pixel is multiplexed by four full-color pixel units respectively formed by one second sub-pixel in each sub-pixel group adjacent in the row direction and adjacent in the column direction.
Description
Technical Field
The invention relates to the technology in the field of OLED, in particular to an OLED display device, a display panel, a display device and a manufacturing method.
Background
With the development of screen display technology, the requirement for the resolution of the display device is higher and higher. However, in the fabrication of the AMOLED device, in order to improve the resolution of the display device, it is generally necessary to reduce the opening area and the pitch of the sub-pixels to increase the pixel density, so as to achieve high-resolution display, but in the practical application process, the sub-pixel density is higher and higher, the process pitch and the sub-pixels are smaller and smaller, the required metal mask plate is more and more difficult to prepare, and the too small sub-pixel area also reduces the light emitting life of the AMOLED device, which greatly affects the yield of the product and the manufacturing cost of the display device.
Currently, in the fabrication of an organic material film of an AMOLED device, an evaporation method is widely used in the industry due to its advantages of high precision, good stability, and the like. When the pixel pattern of the AMOLED device is manufactured by using an evaporation method, a metal mask plate is needed to be used for masking, and the opening part on the mask plate is the part of the substrate which needs to be evaporated to an organic material. The Real RGB arrangement, which is now commonly used, includes R, G, B three-color sub-pixels, and as the resolution of the display device is more and more demanding, the aperture ratio of each sub-pixel will become smaller and smaller.
Fig. 1 is a schematic diagram of a conventional metal mask for evaporating a blue sub-pixel. The metal mask 10 ' required for evaporating the blue sub-pixel 101 ' of Real RGB arrangement, the blue sub-pixel generally has a larger aperture ratio according to the light emitting efficiency of the material, and the oblique angle Rib (i.e. the distance) of the metal mask 10 ' for evaporating the blue sub-pixel is smaller and smaller as the resolution of the display device increases. The fabrication of metal reticles 10' will therefore become increasingly difficult. In fact, Real RGB pixel arrangements have been difficult to meet display device requirements above FHD (Full High Definition) levels
Disclosure of Invention
The present invention provides an OLED display device, a display panel, a display apparatus and a method for manufacturing the same, including a blue sub-pixel, a red sub-pixel and a sub-pixel group including two green sub-pixels, the blue sub-pixel and the red sub-pixel can be multiplexed with different green sub-pixels to form a full-color pixel unit, so as to reduce the number of the red sub-pixels and the blue sub-pixels, reduce the density of the blue sub-pixels and the red sub-pixels, and increase the aperture area of the blue sub-pixels and the red sub-pixels, thereby increasing the aperture ratio of the whole display device.
According to an aspect of the present invention, there is provided an OLED display device including:
the display device comprises a plurality of first-class sub-pixel rows and a plurality of second-class sub-pixel groups, wherein the first-class sub-pixel rows comprise first sub-pixels and sub-pixel groups which are alternately arranged along a first direction, and the sub-pixel groups are composed of a plurality of second sub-pixels; and
a plurality of second-type sub-pixel rows including third sub-pixels alternately arranged along the first direction and the sub-pixel groups, the first-type sub-pixel rows and the second-type sub-pixel rows alternately arranged along a second direction perpendicular to the first direction;
the sub-pixel group is composed of two second sub-pixels, the first sub-pixel is multiplexed by four full-color pixel units respectively formed by one second sub-pixel in each of the sub-pixel groups adjacent in the row direction and adjacent in the column direction, and the third sub-pixel is multiplexed by four full-color pixel units respectively formed by one second sub-pixel in each of the sub-pixel groups adjacent in the row direction and adjacent in the column direction.
Preferably, one of the second subpixels in the subpixel group forms one of the full-color pixel units with one of the first subpixels adjacent in the subpixel group row direction and one of the third subpixels adjacent in the column direction;
the other second sub-pixel in the sub-pixel group, the other first sub-pixel adjacent to the sub-pixel group in the row direction and the other third sub-pixel adjacent to the sub-pixel group in the column direction form one full-color pixel unit.
Preferably, the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel.
Preferably, the window area of the third sub-pixel, the window area of the first sub-pixel, and the window area of the second sub-pixel decrease in sequence.
Preferably, the second sub-pixels in the sub-pixel group are arranged along the second direction.
Preferably, four full-color pixel units form a pixel repeating unit.
Preferably, the first sub-pixel, the second sub-pixel and the third sub-pixel are all rectangular pixels.
According to an aspect of the present invention, there is provided an OLED display panel including the above-described OLED display device.
According to an aspect of the present invention, there is provided an OLED display device including the OLED display panel described above.
According to an aspect of the present invention, there is provided a method for manufacturing a display device, applied to the OLED display device, including:
providing a first mask plate, a second mask plate and a third mask plate;
evaporating the array substrate by using the first mask plate to form a first sub-pixel, wherein the opening of the first mask plate is superposed with the projection of the first sub-pixel on the first mask plate;
evaporating the array substrate by using the second mask plate to form a sub-pixel group, wherein the opening of the second mask plate is superposed with the projection of the sub-pixel group on the second mask plate;
and carrying out evaporation on the array substrate by adopting the third mask plate to form a third sub-pixel, wherein the opening of the third mask plate coincides with the projection of the third sub-pixel on the third mask plate.
The beneficial effects of the above technical scheme are:
the OLED display device, the display panel, the display device and the manufacturing method comprise a blue sub-pixel, a red sub-pixel and a sub-pixel group comprising two green sub-pixels, wherein the blue sub-pixel and the red sub-pixel can form a full-color pixel unit with different green sub-pixels through multiplexing, so that the number of the red sub-pixels and the blue sub-pixels is reduced, the density of the blue sub-pixels and the red sub-pixels is reduced, the opening area of the blue sub-pixels and the opening area of the red sub-pixels are increased, and the opening rate of the whole display device is increased.
Further features and advantages of the invention, as well as the structure and operation of various embodiments of the invention, are described in detail below with reference to the accompanying drawings. It should be noted that the present invention is not limited to the specific embodiments described herein. These examples are given herein for illustrative purposes only.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a conventional metal mask for evaporation of blue sub-pixels;
FIG. 2 is a schematic view of a sub-pixel location of an OLED display device;
FIG. 3 shows a schematic flow chart of a method of manufacturing a display device;
fig. 4 is a schematic structural diagram of a mask.
List of reference numerals:
10 OLED display device
11 rows of subpixels of the first type
12 rows of sub-pixels of the second type
13 first sub-pixel
14 sub-pixel group
141 second sub-pixel
15 third sub-pixel
161. 162, 163, 164, 165, 166, 167 full color pixel unit
17 pixel repeating unit
20 mask plate
21 opening
The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Throughout the drawings, like reference numerals designate corresponding elements. In the drawings, like reference numbers generally indicate identical, functionally similar, and/or structurally similar elements.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
According to an aspect of the present invention, there is provided an OLED display device.
Fig. 2 is a schematic view of a sub-pixel location of an OLED display device. The OLED display device 10 shown in fig. 2 comprises a plurality of rows of sub-pixels of a first kind 11 and a plurality of rows of sub-pixels of a second kind 12. The first-type sub-pixel row 11 includes a plurality of first sub-pixels 13 and a plurality of sub-pixel groups 14, the sub-pixel group 14 includes two second sub-pixels 141, and the first sub-pixels 13 and the sub-pixel groups 14 are alternately arranged along the first direction (X direction). The second-type sub-pixel row 12 comprises a plurality of sub-pixel groups 14 and a plurality of third sub-pixels 15, the sub-pixel group 14 comprises two second sub-pixels 141, and the third sub-pixels 15 and the sub-pixel groups 14 in the row are alternately arranged at intervals along the first direction to form the second-type sub-pixel row 12. The plurality of first sub-pixels 13 and the plurality of sub-pixel groups 14 are alternately arranged along the second direction (Y direction) to form a first kind of sub-pixel column, and the plurality of third sub-pixels 15 and the plurality of sub-pixel groups 14 are alternately arranged to form a second kind of sub-pixel column. The first-type sub-pixel rows 11 and the second-type sub-pixel rows 12 are alternately arranged along the second direction (Y direction), and the first-type sub-pixel columns and the second-type sub-pixel columns are alternately arranged along the first direction (X direction), thereby forming a pixel array of the OLED display device 10. The first sub-pixel 13 shown in fig. 2 is a red sub-pixel, the second sub-pixel 141 is a green sub-pixel, and the third sub-pixel 15 is a blue sub-pixel.
Referring to fig. 2, each of the sub-pixel groups 14 shown in fig. 2 is composed of two second sub-pixel 141 sub-pixel groups 14, and the second sub-pixels 141 in the sub-pixel groups 14 are arranged along the second direction. The first sub-pixel 13 is multiplexed by four full-color pixel units formed by one second sub-pixel 141 in each of the sub-pixel groups 14 adjacent in the row direction and adjacent in the column direction, and the third sub-pixel 15 is multiplexed by four full-color pixel units formed by one second sub-pixel 141 in each of the sub-pixel groups 14 adjacent in the row direction and adjacent in the column direction. One second sub-pixel 141 in the sub-pixel group 14 forms a full-color pixel unit with one first sub-pixel 13 adjacent to the sub-pixel group 14 in the row direction and one third sub-pixel 15 adjacent to the sub-pixel group 14 in the column direction; the second sub-pixel 141 of the sub-pixel group 14 forms a full-color pixel unit with the first sub-pixel 13 adjacent to the sub-pixel group 14 in the row direction and the third sub-pixel 15 adjacent to the sub-pixel group in the column direction. Specifically, one third sub-pixel 15 shown in fig. 2 and one second sub-pixel 141 of two sub-pixel groups 14 in the first direction (row direction) form two full- color pixel units 161 and 163, and the third sub-pixel 15 and one second sub-pixel 141 of two sub-pixel groups 14 adjacent to each other in the second direction form two full- color pixel units 162 and 164, that is, the third sub-pixel 15 is multiplexed by four full- color pixel units 161, 162, 163 and 164. Similarly, one first sub-pixel 13 and one second sub-pixel 141 of two sub-pixel groups 14 in the first direction (row direction) form two full- color pixel units 165 and 167, the first sub-pixel 13 and one second sub-pixel 141 of two sub-pixel groups 14 adjacent to each other in the second direction form two full- color pixel units 161 and 166, and the third sub-pixel 15 is multiplexed by four full- color pixel units 161, 165, 166 and 167.
Referring again to fig. 2, one second sub-pixel 141 in the sub-pixel group 14 forms one full-color pixel unit 162 with one first sub-pixel 13 adjacent in the row direction and one third sub-pixel 15 adjacent in the column direction of the sub-pixel group 14; the second sub-pixel 141 of the sub-pixel group 14 forms a full-color pixel unit 167 with the first sub-pixel 13 adjacent to the sub-pixel group 14 in the row direction and the third sub-pixel 15 adjacent to the sub-pixel group in the column direction. Four full-color pixel units constitute one pixel repeating unit 17, for example, four full- color pixel units 161, 162, 163, 164 constitute one pixel repeating unit 17 or four full- color pixel units 161, 165, 166, 164 may also constitute one pixel repeating unit 17. The first sub-pixel 13, the second sub-pixel 141, and the third sub-pixel 15 are all quadrilateral, for example, the first sub-pixel 13, the second sub-pixel 141, and the third sub-pixel 15 may be rectangular. In the whole OLED display device 10, the number of the first sub-pixel 13 and the third sub-pixel 15 is reduced to 1/4 of the second sub-pixel 141, so that the density of the sub-pixels is reduced, the window area (opening area) of the first sub-pixel 13 and the third sub-pixel 15 is increased, the aperture ratio of the whole OLED display device 10 is improved, the aperture ratio is the ratio of the area of the sub-pixels to the area of the full-color pixel unit, and the light emitting life of the OLED is further ensured.
According to an aspect of the present invention, there is provided a display device manufacturing method.
Fig. 3 shows a flow diagram of a method of manufacturing a display device. The method for manufacturing the display device shown in fig. 3, for manufacturing the above-mentioned OLED display device, includes steps S301, S302, and S303. In step S301, a first mask, a second mask and a third mask are provided. In step S302, a first mask is used to perform evaporation on the array substrate to form a first sub-pixel 13, wherein an opening of the first mask coincides with a projection of the first sub-pixel 13 on the first mask. In step S303, a second mask is used to perform evaporation on the array substrate to form a sub-pixel group 14, wherein an opening of the second mask coincides with a projection of the sub-pixel group 14 on the second mask. In step S304, a third mask is used to perform evaporation on the array substrate to form a third sub-pixel 15, wherein an opening of the third mask coincides with a projection of the third sub-pixel 15 on the third mask.
Fig. 4 is a schematic structural diagram of a mask. The mask plate 20 (second mask plate) shown in fig. 4 is used for evaporating the sub-pixel group 14, that is, one opening 21 on the mask plate 20 can simultaneously evaporate organic film layers of two second sub-pixels 141, so that compared with the Real RGB pixel arrangement, the density of the opening 20 on the mask plate 20 is reduced to 1/2, the process space is released, and the manufacturing difficulty of the mask plate 20 is reduced.
According to an aspect of the present invention, there is provided an OLED display panel including the above-described OLED display device.
According to an aspect of the present invention, there is provided an OLED display device including the OLED display panel described above.
In summary, the OLED display device, the display panel, the display apparatus and the manufacturing method of the present invention include a blue sub-pixel, a red sub-pixel and a sub-pixel group including two green sub-pixels, and the blue sub-pixel and the red sub-pixel can be multiplexed with different green sub-pixels to form a full-color pixel unit, so as to reduce the number of the red sub-pixels and the blue sub-pixels, reduce the density of the blue sub-pixels and the red sub-pixels, and increase the aperture area of the blue sub-pixels and the red sub-pixels, thereby increasing the aperture ratio of the entire display device. .
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. An OLED display device, comprising:
the display device comprises a plurality of first-class sub-pixel rows and a plurality of second-class sub-pixel groups, wherein the first-class sub-pixel rows comprise first sub-pixels and sub-pixel groups which are alternately arranged along a first direction, and the sub-pixel groups are composed of a plurality of second sub-pixels; and
a plurality of second-type sub-pixel rows including third sub-pixels alternately arranged along the first direction and the sub-pixel groups, the first-type sub-pixel rows and the second-type sub-pixel rows alternately arranged along a second direction perpendicular to the first direction;
the sub-pixel group is composed of two second sub-pixels, the first sub-pixel is multiplexed by four full-color pixel units respectively formed by one second sub-pixel in each of the sub-pixel groups adjacent in the row direction and adjacent in the column direction, and the third sub-pixel is multiplexed by four full-color pixel units respectively formed by one second sub-pixel in each of the sub-pixel groups adjacent in the row direction and adjacent in the column direction.
2. The OLED display device of claim 1,
one of the second sub-pixels in the sub-pixel group forms one of the full-color pixel units with one of the first sub-pixels adjacent to the sub-pixel group in the row direction and one of the third sub-pixels adjacent to the sub-pixel group in the column direction;
the other second sub-pixel in the sub-pixel group, the other first sub-pixel adjacent to the sub-pixel group in the row direction and the other third sub-pixel adjacent to the sub-pixel group in the column direction form one full-color pixel unit.
3. The OLED display device of claim 1, wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel.
4. The OLED display device according to claim 1, wherein the window area of the third sub-pixel, the window area of the first sub-pixel, and the window area of the second sub-pixel decrease sequentially.
5. The OLED display device of claim 2, wherein the second subpixels of the subpixel group are arranged along the second direction.
6. The OLED display device claimed in claim 1, wherein four full-color pixel units constitute a pixel repeating unit.
7. The OLED display device of claim 1, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are all rectangular pixels.
8. An OLED display panel comprising the OLED display device of any one of claims 1-7.
9. An OLED display device comprising the OLED display panel according to claim 8.
10. A method for manufacturing a display device, applied to the OLED display device of any one of claims 1 to 7, comprising:
providing a first mask plate, a second mask plate and a third mask plate;
evaporating the array substrate by using the first mask plate to form a first sub-pixel, wherein the opening of the first mask plate is superposed with the projection of the first sub-pixel on the first mask plate;
evaporating the array substrate by using the second mask plate to form a sub-pixel group, wherein the opening of the second mask plate is superposed with the projection of the sub-pixel group on the second mask plate;
and carrying out evaporation on the array substrate by adopting the third mask plate to form a third sub-pixel, wherein the opening of the third mask plate coincides with the projection of the third sub-pixel on the third mask plate.
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| CN201910183609.XA CN111697025B (en) | 2019-03-12 | 2019-03-12 | OLED display device, display panel, display device and manufacturing method |
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| CN201910183609.XA CN111697025B (en) | 2019-03-12 | 2019-03-12 | OLED display device, display panel, display device and manufacturing method |
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| WO2022134815A1 (en) * | 2020-12-25 | 2022-06-30 | 京东方科技集团股份有限公司 | Pixel arrangement structure, fine metal mask group and display apparatus |
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Address after: 1568 Jiugong Road, Jinshan Industrial Zone, Jinshan District, Shanghai, 201506 Applicant after: Shanghai Hehui optoelectronic Co.,Ltd. Address before: 1568 Jiugong Road, Jinshan District, Shanghai, 201506 Applicant before: EVERDISPLAY OPTRONICS (SHANGHAI) Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |