The 32nd International Display Workshops (IDW '25)
Dec 2 - Dec 5, 2025International Convention Center Hiroshima
The 32nd International Display Workshops (IDW '25)
Dec 2 - Dec 5, 2025International Convention Center Hiroshima
[AMD4-1(Invited)]Recent Advances in LTPO Technology for Mobile OLED Displays
*JungChul Kim1,2, SoonSung Ahn1, JunSuk Yoo1, SangYoon Park1, HyunChul Choi1, HyunJae Kim2(1. LG Display (Korea), 2. Yonsei University (Korea))
Keywords:
LTPO,3D vertical CMOS inverter,GIP,Narrow Bezel
This research introduces a 3D-structured CMOS inverter, alongside its integration into narrow-bezel AMOLED displays, leveraging the advanced capabilities of LTPO TFTs. By vertically aligning an n-type oxide TFT on a p-type LTPS TFT without additional photo masks, the circuit area is reduced by about 50%. Based on the 3D-structured CMOS inverter circuit, the new LTPO GIP reduces the GIP size by approximately 20%.