Year: 2023
Type: article
Abstract: In this paper, we present novel ultra large size organic light emitting diode (OLED) display technologies with high image quality for premium televisions (TVs) using an advanced coplanar oxide thin film transistor (TFT) backplane, microlens array (MLA)‐based OLED, small size gate driver in panel for narrow bezel, and pixel charging enhancement method with external compensation. Using these technologies, we improved the luminance efficiency about 20% and reduced the integrated gate driver design area to 40%. We have achieved the life time of the gate driver in panel longer than 100,000 h in reliability test. The pixel charging ratio is more than 80% in all gray levels. Using the developed OLED display, we have successfully developed up to ultra large size 88‐in. 8K and 97‐in. 4K OLED TVs.
DOI: 10.1002/jsid.1213
Authors: Hong Jae Shin, Yong Ho Kim, Dong Myoung Kim, Seong Ho Yun, Sung Joon Bae, Han Seop Kim, Hyeon Woo Lee, Chang Ho Oh
Institution: LG (South Korea)
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4367054169