Optical sensor and display device including the optical sensor
AssigneeSamsung Display Co., Ltd.
InventorsKi June Lee, Jung Ha Son, Tae Sung Kim, Jae Ik Lim, Hyun Min Cho
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Abstract
An optical sensor includes a substrate, a photoelectric element disposed on the substrate and that includes a first electrode, an intermediate layer disposed on the first electrode, and a second electrode disposed on the intermediate layer, a barrier layer disposed on the second electrode, an insulating layer that covers the photoelectric element and the barrier layer, and a bias electrode disposed on the insulating layer and electrically connected to the second electrode. The barrier layer is spaced apart from the first electrode.
Claims12
An optical sensor, comprising:
- a substrate;
- a photoelectric element disposed on the substrate, wherein the photoelectric element includes a first electrode, an intermediate layer disposed on the first electrode, and a second electrode disposed on the intermediate layer;
- a barrier layer disposed on the second electrode;
- an insulating layer that covers the photoelectric element and the barrier layer,
- a bias electrode disposed on the insulating layer and electrically connected to the second electrode;
- and
- an organic planarization layer disposed directly on and above the bias electrode and on and above the insulating layer, and that has a flat upper surface,
- wherein the barrier layer is spaced apart from the first electrode.
A display device, comprising:
- a display panel that includes a lower surface and an upper surface opposite to the lower surface, and a plurality of pixels disposed on the upper surface of the display panel;
- and
- an optical sensor disposed on the lower surface of the display panel and that includes a plurality of sensor pixels,
- wherein each sensor pixel comprises:
- a substrate;
- a photoelectric element disposed on the substrate, wherein the photoelectric element includes a first electrode, an intermediate layer disposed on the first electrode, and a second electrode disposed on the intermediate layer;
- a barrier layer disposed on the second electrode;
- an insulating layer that covers the photoelectric element and the barrier layer;
- a bias electrode disposed on the insulating layer and electrically connected to the second electrode;
- and
- an organic planarization layer disposed directly on the bias electrode and the insulating layer,
- wherein the insulating layer is in contact with the intermediate layer, but is spaced apart from the second electrode.
Dependencies are inferred from the claim text.