Samsung Display Co., Ltd.

Yoo Young Park

Hyo Jung Kim

Seung Bo Shim

Deok Jun Choi

Jeong Yong Lee

Ji Hyeon Son

Hye Sun Sung

Ki Yong Park

A method includes: forming a MOSFET layer on a semiconductor wafer substrate, the MOSFET layer including: pixel driver circuits; and a display driver circuit; forming at least one line layer on the MOSFET layer; applying a first supply voltage to a first supply voltage line through a first supply voltage pad; connecting data fan-out lines connected to the pixel driver circuits with a first test line by controlling a test switching circuit in the MOSFET layer; measuring an electrical signal generated from each of the pixel driver circuits through a first test pad connected to the first test line; determining whether each of the pixel driver circuits is defective or not based on the measured electrical signal; and forming a light-emitting element layer including light-emitting elements on the at least one line layer when that the pixel driver circuits are determined to be not defective.

Display device and method of fabricating the same

Growing community of inventors

Yongin-si, South Korea

Yoo Young Park