Samsung Display Co., Ltd.

Hye Sun Sung

Jeong Yong Lee

Ji Hyeon Son

Hyo Jung Kim

Seung Bo Shim

Deok Jun Choi

Yoo Young Park

Ki Yong Park

Min Ji Baek

A display device includes a first layer disposed on a base layer and including a first gate electrode, a first gate insulating layer, and an active layer, and a second layer disposed on the first layer and including a second gate electrode, a second gate insulating layer, and the active layer. The first layer and the second layer share the active layer. The first gate insulating layer has a first dielectric constant, and the second gate insulating layer has a second dielectric constant. The first dielectric constant and the second dielectric constant are different from each other.

Display device, method of manufacturing display device, and driving method of display device

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

Hye Sun Sung