Display panel and display device
AssigneeLG Display Co., Ltd.
InventorsDeukHo Yeon, TaeHyoung Moon, JaeHyun Kim, SungJin Lee
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Abstract
Provided are a display panel and a display device. After deposition of a thin-film transistor layer and a display layer in which emitting devices are disposed, a sensing layer including a piezoelectric material is disposed under the thin-film transistor layer to facilitate implementation of a display panel having built-in piezoelectric devices. Further, as thin-film transistors for ultrasonic sensing and thin-film transistors for display driving are disposed in different layers, a display panel capable of ultrasonic sensing in an active area may be provided without affecting a display resolution or implementation of display pixels.
Claims20
A display panel comprising:
- a thin-film transistor layer in which a plurality of first thin-film transistors and a plurality of second thin-film transistors are disposed;
- a display layer disposed on the thin-film transistor layer, in which a plurality of emitting devices are disposed;
- and
- a sensing layer disposed under the thin-film transistor layer, the sensing layer comprising:
- a plurality of sensing pixel electrodes disposed on a bottom surface of the thin-film transistor layer;
- a piezoelectric material disposed under the plurality of sensing pixel electrodes;
- and
- a sensing common electrode disposed under the piezoelectric material, and
- wherein at least one of the plurality of first thin-film transistors is electrically coupled to the plurality of sensing pixel electrodes, and at least one of the plurality of the second thin-film transistors is electrically coupled to the plurality of emitting devices.
A display panel comprising:
- a plurality of display pixels;
- and
- a plurality of sensing pixels disposed in at least a part of an area overlapping with the plurality of display pixels,
- wherein each of the plurality of sensing pixels includes at least one first thin-film transistor, and a piezoelectric device disposed in a different layer from the first thin-film transistor and electrically coupled to the first thin-film transistor,
- wherein each of the plurality of display pixels includes at least one second thin-film transistor, and an emitting device disposed in a different layer from the second thin-film transistor and electrically coupled to the second thin-film transistor, and
- wherein the first thin-film transistor and the second thin-film transistor are disposed between the layer in which the piezoelectric device is disposed and the layer in which the emitting device is disposed.
Dependencies are inferred from the claim text.