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Pixel structure, oled display and evaporation mask

A pixel structure and pixel technology, applied in vacuum evaporation plating, sputtering plating, ion implantation plating, etc., can solve the problems of not meeting the design requirements of high PPI products, affecting the aperture ratio of sub-pixels, and reducing the length

Active Publication Date: 2021-04-23
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to avoid the shadowing effect on the sub-pixel during evaporation, a sufficient distance must be kept between the sub-pixel and the bridge, which leads to the reduction of the length of the sub-pixel up and down, which affects the aperture ratio of each sub-pixel
The traditional RGB juxtaposed pixel arrangement can only reach a maximum of 200-300PPI, making it difficult to achieve high-resolution display effects
With the increasing demand of users for the resolution of OLED display panels, this way of juxtaposing RGB pixels can no longer meet the design requirements of high PPI.

Method used

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  • Pixel structure, oled display and evaporation mask
  • Pixel structure, oled display and evaporation mask
  • Pixel structure, oled display and evaporation mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] image 3 It is a schematic diagram of pixel arrangement of an OLED display in Embodiment 1 of the present invention. Wherein, the X direction refers to the extending direction of each pixel row (also called row direction or horizontal direction), and the Y direction refers to the direction perpendicular to the X direction (also called column direction or vertical direction). For convenience, image 3 Only part of the structure of the OLED display is shown in the figure, the number of pixels in the actual product is not limited to this, and the number of pixel units can be changed according to the actual display needs.

[0043] Such as image 3 As shown, the pixel structure of the OLED display screen includes a plurality of pixel unit groups 300 arranged in an array. Wherein, each pixel unit group 300 may include two pixel units (such as Figure 4 or Figure 5 ), each pixel unit group 300 includes two first sub-pixels 301, two second sub-pixels 302 and one third sub...

Embodiment 2

[0057] Figure 14 It is a schematic diagram of pixel arrangement of an OLED display screen in Embodiment 2 of the present invention. Such as Figure 14 As shown, the pixel structure of the OLED display screen includes a plurality of pixel unit groups 300 arranged in an array. The two first sub-pixels 301 and the two second sub-pixels 302 in each pixel unit group 300 are alternately arranged around the third sub-pixel 303, and the third sub-pixels 303 in the pixel unit groups 300 in adjacent rows are aligned. (Facing) Arrangement. continue to refer Figure 14 As shown, two adjacent pixel unit groups 300 in the column direction are symmetrically distributed (mirrored symmetrically distributed) with respect to their boundaries. Specifically, the two first sub-pixels 301 in the two adjacent pixel unit groups 300 in the column direction are adjacently arranged, and at the same time, the two second sub-pixels 302 in the two adjacent pixel unit groups in the column direction Arr...

Embodiment 3

[0062] Figure 18 It is a schematic diagram of pixel arrangement of an OLED display screen in Embodiment 3 of the present invention. The pixel structure of the OLED display screen includes a plurality of pixel unit groups 300 arranged in an array. The two first sub-pixels 301 in each pixel unit group 300 are arranged on one side (such as the left side) of the third sub-pixel 303, and the two second sub-pixels 302 in each pixel unit group are arranged on the side of the third sub-pixel 303. The other side (such as the right side) of the third sub-pixel 303, and the third sub-pixels in the pixel unit groups of adjacent rows are arranged in alignment.

[0063] Moreover, two adjacent pixel unit groups 300 in the column direction are symmetrically distributed (mirrored symmetrically distributed) with respect to their boundaries. Specifically, two first sub-pixels 301 in two adjacent pixel unit groups 300 on adjacent rows are arranged adjacently, and at the same time, two second s...

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Abstract

The invention provides a pixel structure, an OLED display screen and an evaporation mask plate. The pixel structure includes a plurality of pixel unit groups arranged in an array, and each pixel unit group includes a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel is close to the third sub-pixel The side of the pixel is not parallel to the side far away from the third sub-pixel, and the side of the second sub-pixel close to the third sub-pixel is not parallel to the side far away from the third sub-pixel; At least two adjacent first sub-pixels in two pixel unit groups are formed by using the same mask opening on the evaporation mask plate, and at least two adjacent second sub-pixels in two adjacent pixel unit groups are formed by evaporation The same mask opening is formed on the plated mask plate, and the opening ratio or PPI can be increased by sharing the margin generated by the same mask opening.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel structure, an OLED display containing the pixel structure, and an evaporation mask. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) is an active light-emitting device. Compared with the traditional LCD (Liquid Crystal Display, liquid crystal display) display method, the OLED display technology does not require a backlight and has the characteristic of self-luminescence. OLED uses a thin film of organic material and a glass substrate. When an electric current passes through it, the organic material will emit light. Therefore, OLED displays can significantly save power, can be made lighter and thinner, can withstand a wider range of temperature changes than LCD displays, and have a larger viewing angle. OLED display is expected to become the next-generation flat-panel display technology after LCD, and it is one of the most ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/56C23C14/04H10K99/00
CPCC23C14/042H10K59/353H10K71/00C23C14/04H10K59/352H10K71/166H10K59/35H10K59/121
Inventor 周丽芳李俊峰刘明星王徐亮高峰
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD