Display substrate and preparation method thereof and display device

A display substrate and substrate substrate technology, applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve the problem of fast solvent evaporation rate, uneven film thickness of pixel ink, impact on display device life and display effect, etc. question
CN110416280AActive Publication Date: 2019-11-05BOE TECH GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BOE TECH GRP CO LTD
Publication Date
2019-11-05

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Abstract

The embodiment of the invention provides a display substrate and a preparation method thereof and a display device. The display substrate includes an underlayment substrate on which a pixel defining layer is arranged. A pixel area for containing pixel ink is formed in the middle of the pixel defining layer. A photo-thermal conversion layer for converting light energy to heat energy is arranged onthe pixel defining layer. The thickness of a film formed by the pixel ink is uniform, and the coffee ring effect is avoided.
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Description

technical field

[0001] The invention relates to the field of display technology, in particular to a display substrate, a preparation method thereof, and a display device. Background technique

[0002] Compared with Liquid Crystal Display (LCD), Organic Light-Emitting Diode (OLED) has the advantages of self-illumination, fast response, wide viewing angle, high brightness, bright color, light and thin, etc. next generation display technology.

[0003] OLED film-forming methods mainly include evaporation process or solution process. The evaporation process is relatively mature in small-scale applications, and this technology has been applied in mass production. The solution process OLED film-forming methods mainly include inkjet printing, nozzle coating, spin coating, screen printing, etc. Among them, inkjet printing technology is considered to be a large-scale OLED technology due to its high material utilization rate and large-scale realization. An important way to achieve ...

Claims

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