Anzeigegerät mit einem Oxidhalbleiter

Details

Veröffentlichungs-Nr.

EP4195277

Aktenzeichen

EP22189874

Anmeldetag

11. August 2022

Veröffentlichung

29. Oktober 2025

Erteilung

29. Oktober 2025

Rechtsraum

EP

IPC

H10D86/40H10D86/60H10K59/126

Abstract

A display apparatus including an oxide semiconductor is provided. A pixel driving circuit and a light-emitting device being electrically connected to the pixel driving circuit may be disposed on a pixel area (PA). The pixel driving circuit may include at least one switching thin film transistor (200, 300) and a driving thin film transistor (400). A light-blocking pattern (710) and an upper buffer layer (160) covering the light-blocking pattern (710) may be disposed between the device substrate (100) and a driving semiconductor pattern (410) of the driving thin film transistor (400). An intermediate insulating layer (150, 151, 152) disposed between the device substrate (100) and the upper buffer layer (160) may include an opening (150h, 151h, 152h) overlapping with the light-blocking pattern (710) and the driving semiconductor pattern (410). Thus, in the display apparatus, a rate of change in current according to a voltage applied to a driving gate electrode (430) of the driving thin film transistor (400) may be reduced, without changing the characteristics of the switching thin film transistor (200).

Anmelder

Firma

LG Display Co., Ltd.

Land

🇰🇷 Südkorea

Fachgebiete