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Pixel structure, mask plate and display device

A technology of pixel structure and display device, which is applied to semiconductor devices, electrical components, circuits, etc., can solve the problems of high resolution and high aperture ratio difficulties, and achieves improved evaporation effect, improved production yield and display effect, and prevented deformation effect

Active Publication Date: 2021-01-26
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-precision metal masks are usually etched to form slit or slot opening patterns, but due to the limitations of the etching process, the opening of the mask cannot be made very small; in addition, in the evaporation process Sub-pixels of different colors are limited by the opening pitch, so the preparation of AMOLED is inevitably limited by the FMM opening and the precision of the evaporation process, and it is difficult to achieve high resolution and high aperture ratio

Method used

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  • Pixel structure, mask plate and display device
  • Pixel structure, mask plate and display device
  • Pixel structure, mask plate and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, this embodiment provides a pixel structure, including a plurality of repeating units, each repeating unit includes four sub-pixel clusters arranged around its center, and each sub-pixel cluster includes four pixels of the same color arranged around the center of the sub-pixel cluster. sub-pixels, and the sub-pixels in different sub-pixel groups have different colors; wherein, the four sub-pixel groups are respectively the first sub-pixel group 2, the second sub-pixel group 3, the third sub-pixel group 4 and the fourth sub-pixel Group 5; the sub-pixel in the first sub-pixel group 2 is the first sub-pixel 21; the sub-pixel in the second sub-pixel group 3 is the second sub-pixel 31; the sub-pixel in the third sub-pixel group 4 is the third Sub-pixel 41; the sub-pixel in the fourth sub-pixel group 5 is the fourth sub-pixel 51; and in the pixel structure of this embodiment, any four sub-pixel groups that are adjacently arranged and form a ring are ...

Embodiment 2

[0038] This embodiment provides a display device, including any one of the pixel structures provided in Embodiment 1.

[0039] The display device can be any product or component with a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

[0040] Preferably, the display device is an organic light-emitting diode (OLED; Organic Light-Emitting Diode;) display device. In the display device, since the pixel structure has a better evaporation process effect, the product yield of the display device is higher; moreover, since the mask opening for preparing the pixel structure is relatively large, the aperture ratio is improved, and the light emitting area is increased. Large, so as to improve the product brightness, lifespan and image quality definition of the organic light-emitting diode (OLED; Organic Light-Emitting Diode;...

Embodiment 3

[0042] Such as Figure 2 to Figure 5 As shown, this embodiment provides a mask for preparing any one of the pixel structures provided in Embodiment 1.

[0043] The mask plate includes: a substrate, and a mask opening 7 on the substrate corresponding to the outline of the sub-pixel group.

[0044] Preferably, the mask is a high-precision metal mask.

[0045] Compared with the mask plate in the prior art, the mask opening 7 in the mask plate provided in this embodiment corresponds to the sub-pixel group in the pixel structure provided in Embodiment 1, that is, the mask in this embodiment Opening 7 corresponds to four sub-pixels of the same color. Specifically, the first sub-pixel group, the second sub-pixel group, the third sub-pixel group and the fourth sub-pixel group can be respectively prepared by using four masks with different openings, for example, using figure 2 The mask plate shown is used to prepare the first sub-pixel group, using image 3 The mask plate shown is...

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Abstract

The invention provides a pixel structure, a mask plate and a display device, which belong to the field of display technology and can improve the resolution of products without increasing the difficulty of mask plate processing. The pixel structure includes a plurality of repeating units, each repeating unit includes four sub-pixel groups arranged around its center, each sub-pixel group includes four sub-pixels of the same color arranged around its center, and the sub-pixels in different sub-pixel groups The colors are different; the four sub-pixel groups are the first sub-pixel group, the second sub-pixel group, the third sub-pixel group and the fourth sub-pixel group; the sub-pixels in the first sub-pixel group are the first sub-pixels; The sub-pixels in the second sub-pixel group are the second sub-pixels; the sub-pixels in the third sub-pixel group are the third sub-pixels; the sub-pixels in the fourth sub-pixel group are the fourth sub-pixels; adjacently arranged and form a ring In any four sub-pixel clusters of , four sub-pixels of different colors that are closely adjacent and form a ring form a pixel unit.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a pixel structure, a mask plate and a display device. Background technique [0002] Commonly used flat panel display devices generally include LCD (Liquid Crystal Display: Liquid Crystal Display) and OLED (Organic Light-Emitting Diode: Organic Light-Emitting Diode) display devices. In particular, OLED display devices have many advantages such as self-luminescence, fast response speed, and wide viewing angle compared with LCDs, and are suitable for various applications such as flexible displays, transparent displays, and 3D displays. [0003] At present, in the preparation process of top-emitting active matrix organic light-emitting diode (AMOLED) panels, a high-precision metal mask (Fine Metal Mask, FMM for short) is usually used to form an organic light-emitting layer by evaporation through an evaporation process. High-precision metal masks are usually etched to fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32
CPCH10K59/122H10K59/12
Inventor 王志强
Owner BOE TECH GRP CO LTD