Anzeigesubstrat, Anzeigetafel und Anzeigevorrichtung

Details

Veröffentlichungs-Nr.

EP4766114

Anmeldetag

26. Dezember 2023

Veröffentlichung

3. Juli 2025

Rechtsraum

EP

Abstract

Provided are a display substrate, a display panel and a display device. The display substrate includes a base substrate, a pixel definition layer, a light-emitting functional layer and a second electrode layer arranged sequentially. The light-emitting functional layer includes a charge generation layer. The pixel definition layer defines pixel openings. The pixel definition layer includes a pixel definition portion having an undercut structure on a side facing the pixel opening. The undercut structure includes first, second and third portions, the second portion recesses a first distance relative to the third portion in a direction away from the pixel opening, and the first portion protrudes a second distance relative to the third portion in a direction toward the pixel opening. A virtual connecting line between edges of the first portion and the third portion facing the pixel opening forms a first slope angle with a first direction. Above the undercut structure, the second electrode layer includes a second electrode second sub-portion whose side edge facing the pixel opening has a second slope angle, and the first slope angle is less than the second slope angle.

Anmelder

Firmen

Boe Technology Group Co., Ltd.
Yunnan Invensight Optoelectronics Technology Co., Ltd.
Beijing BOE Technology Development Co., Ltd.

Land

🇨🇳 China