Lg Display Co., Ltd.

SoYeon Je

KiTae Kim

Jihye Lee

YoungJang Lee

HyoJin Kim

Hyuk Ji

SoYoung Noh

JunHo Lee

SeungChan Choi

SungBin Ryu

UiJin Chung

Eunsung Kim

HyunSoo Shin

Wonkyung Kim

Kyeongju Moon

JinChae Jeon

Jeanhan Yoon

Bokyoung Cho

Jeihyun Lee

A display device can include a first thin film transistor including a first active layer including a first semiconductor material, a first gate electrode overlapping with the first active layer, and a first source electrode and a first drain electrode both electrically connected to the first active layer; a separation insulating layer disposed on the first thin film transistor; and a second thin film transistor disposed on the separation insulating layer and including: a second active layer including a second semiconductor material different from the first semiconductor material, a second gate electrode overlapping with the second active layer, and a second source electrode and a second drain electrode both electrically connected to the second active layer, in which the second active layer of the second thin film transistor has a first thickness and a second thickness greater than the first thickness.

Display device

A thin film transistor substrate having two different types of thin film transistors on the same substrate, and a display using the same are discussed. The thin film transistor substrate can include a substrate, a first thin film transistor (TFT), a second TFT, a first storage capacitor electrode, an oxide layer, a nitride layer, a second storage capacitor electrode, a planar layer and a pixel electrode. The first TFT is disposed in a first area, the second TFT is disposed in a second area, and the first storage capacitor electrode is disposed in a third area on the substrate respectively. The oxide layer covers the first and second TFTs, and exposes the first storage capacitor electrode. The nitride layer is disposed on the oxide layer and covers the first storage capacitor electrode. The second storage capacitor electrode overlaps with the first storage capacitor electrode on the nitride layer. The planar layer covers the first and second TFTs, and the second storage capacitor electrode. The pixel electrode is disposed on the planar layer.

Thin film transistor substrate and display using the same

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Goyang-si, South Korea

SoYeon Je