Photo transistor and display device including the same
AssigneesSamsung Display Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
InventorsTae Sang Kim, Hyun Jae Kim, Hyuk Joon Yoo, Jun Hyung Lim
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Abstract
A photo transistor and a display device employing the photo transistor are provided. The photo transistor includes a gate electrode disposed on a substrate, a gate insulating layer that electrically insulates the gate electrode, a first active layer overlapping the gate electrode and including metal oxide, wherein the gate insulating layer is disposed between the gate electrode and the active layer, a second active layer disposed on the first active layer and including selenium, and a source electrode and a drain electrode respectively electrically connected to the second active layer.
Claims16
A photo transistor comprising:
- a gate electrode disposed on a substrate;
- a gate insulating layer that electrically insulates the gate electrode;
- a first active layer overlapping the gate electrode and including metal oxide, the gate insulating layer being disposed between the gate electrode and the first active layer;
- a second active layer disposed on the first active layer and including selenium;
- and
- a source electrode and a drain electrode respectively electrically connected to the second active layer, wherein
- the first active layer is formed of IGZO, and
- the second active layer is formed of only selenium.
A display device comprising:
- a substrate including a transmissive region and a light emission region;
- a transistor layer disposed on the substrate and including a first transistor and a second transistor, the first transistor including:
- a gate electrode;
- a first active layer including metal oxide;
- a second active layer including selenium;
- and
- source and drain electrodes;
- a light emitting element layer disposed on the transistor layer and including a first electrode;
- and
- a touch sensor disposed on the light emitting element layer and including electrodes, wherein
- the first active layer is formed of IGZO, and
- the second active layer is formed of only selenium.
Dependencies are inferred from the claim text.