Title:
MANUFACTURING METHOD FOR DISPLAY SUBSTRATE, DISPLAY SUBSTRATE, AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/217879
Kind Code:
A1
Abstract:
The present application provides a manufacturing method for a display substrate, a display substrate, and a display device. The uniformity of film thicknesses of light-emitting functional layers in sub-pixel regions of different colors can be achieved, the effective aperture ratio of the sub-pixel regions of different colors can be ensured, and the service life of the device can be prolonged. The manufacturing method comprises: providing a base substrate, the base substrate comprising a plurality of sub-pixel regions of different colors; printing a solution of a light-emitting functional layer in each sub-pixel region, wherein the volumes of the solution in the sub-pixel regions of different colors are positively correlated with the saturated vapor pressure of the solution; and performing vacuum drying on the solution to form light-emitting functional layers having uniform film thicknesses.
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Inventors:
LIAO CHINLUNG (CN)
JIA WENBIN (CN)
WANG HONGLI (CN)
JIA WENBIN (CN)
WANG HONGLI (CN)
Application Number:
PCT/CN2021/125518
Publication Date:
October 20, 2022
Filing Date:
October 22, 2021
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
HEFEI BOE JOINT TECH CO LTD (CN)
HEFEI BOE JOINT TECH CO LTD (CN)
International Classes:
H01L51/56; H01L27/32; H01L51/00
Foreign References:
| CN109059436A | 2018-12-21 | |||
| CN108336123A | 2018-07-27 | |||
| CN111509144A | 2020-08-07 | |||
| CN106953030A | 2017-07-14 | |||
| CN112042275A | 2020-12-04 | |||
| TW201033301A | 2010-09-16 | |||
| CN111081902A | 2020-04-28 | |||
| CN111933682A | 2020-11-13 | |||
| JP2004330136A | 2004-11-25 | |||
| CN103141158A | 2013-06-05 |
Other References:
See also references of EP 4207328A1
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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