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Mask

A mask and mask strip technology, applied in the field of mask, can solve the problems of poor adhesion between mask and substrate, increase pixel dislocation and color mixing, etc., so as to reduce the risk of pixel dislocation and color mixing, reduce The effect of sagging and improving the accuracy of vapor deposition

Active Publication Date: 2020-06-19
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

When the mask is wrinkled or sagging, the adhesion between the mask and the substrate is not good, which increases the risk of pixel misalignment and color mixing after evaporation

Method used

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0033] At present, OLED display panels are usually deposited by a vacuum evaporation process to form OLED devices. In the evaporation process, it is necessary to use a mask to deposit the material to be deposited on the pixel area of ​​the OLED display panel. During this process, the opening area of ​​the mask plate is set corresponding to the pixel area on the OLED display panel to be evaporated. The mask plate includes a mask plate frame and a mask strip. Before evaporation, a certain tension is applied to the ...

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Abstract

The invention discloses a mask. The mask comprises at least one mask strip, the mask strip comprises an evaporation area and a shielding area, the evaporation area is provided with a plurality of openings, the shielding area is arranged on the two sides of all the openings in the first direction, wherein the first direction is the length direction of the mask strip, the shielding area comprises atleast one thermal shrinkage area, and the thermal shrinkage areas comprise thermal shrinkage materials. According to the mask, when the mask strip is welded to a mask frame, the thermal shrinkage materials in the thermal shrinkage areas are heated, and crystal lattices are shrunk, so that the thermal shrinkage phenomenon is generated; the thermal shrinkage phenomenon of the thermal shrinkage areas applies thermal shrinkage tension to the shielding area of the mask strip to drive the shielding area to be tensioned, so that the mask strip is further tensioned, and then the drooping phenomenon of the mask strip due to gravity can be reduced; and meanwhile, wrinkles on the mask strip can be reduced, the laminating effect between the mask and a substrate to be evaporated during evaporation isimproved, the evaporation precision of the mask is improved, and the risks of pixel dislocation, color mixing and the like after evaporation of the substrate to be evaporated are reduced.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technology, and in particular, to a mask. Background technique [0002] In the manufacturing process of the organic light emitting diode (Organic Light Emitting Diode, OLED) display panel, the mask used for evaporation can control the position where the organic material is deposited on the substrate. When the mask is wrinkled or sagging, the adhesion between the mask and the substrate is not good, which increases the risk of pixel misalignment and color mixing after evaporation. Contents of the invention [0003] The invention provides a mask to reduce the wrinkles and sags of the mask and improve the evaporation precision of the mask. [0004] In a first aspect, an embodiment of the present invention provides a mask, including at least one mask strip; the mask strip includes a shielding area and a plurality of openings; the shielding area is arranged around the opening; [0005] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/04C23C14/12C23C14/24H01L51/56
CPCC23C14/042C23C14/12C23C14/24H10K71/166H10K71/00
Inventor 古春笑赵坤张帅
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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