Fingerprint Sensing Display Apparatus
AssigneeLG Display Co., Ltd.
InventorsNamYong GONG, JinYeol KIM, SungPil CHOI, YoungSoo LEE
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Abstract
A display display is disclosed. The display device comprises a substrate and a transistor on the substrate. An electroluminescence element is on the transistor and an encapsulation unit is on the electroluminescence element. A fingerprint sensor is under the second surface of the substrate. A portion of the substrate, a portion of the transistor, a portion of the electroluminescence element, and a portion of the encapsulation unit that overlap the fingerprint sensor are an ultrasonic transmission and reception channel on the fingerprint sensor.
Claims20
A display device comprising:
- a substrate including a first surface and a second surface that is under the first surface;
- a transistor on the first surface of the substrate;
- an electroluminescence element on the transistor;
- an encapsulation unit on the electroluminescence element;
- and
- a fingerprint sensor under the second surface of the substrate;
- wherein a portion of the substrate, a portion of the transistor, a portion of the electroluminescence element, and a portion of the encapsulation unit that overlap the fingerprint sensor are an ultrasonic transmission and reception channel on the fingerprint sensor.
A display device comprising:
- a substrate including a first surface and a second surface that is under the first surface;
- an ultrasonic fingerprint sensor on a portion of the second surface of the substrate;
- an adhesive between the substrate and the ultrasonic fingerprint sensor, the adhesive in direct contact with the ultrasonic fingerprint sensor;
- a transistor including an insulating unit, the transistor on the first surface of the substrate, and wherein an air gap is not present between the transistor and the substrate;
- a planarization layer directly on the transistor;
- an electroluminescence element directly on the planarization layer;
- and
- an encapsulation unit including a plurality of encapsulation layers, the encapsulation unit directly on the electroluminescence element, and wherein the plurality of encapsulation layers lack an air gap between the plurality of encapsulation layers.
A display device comprising:
- a display panel comprising a plurality of components;
- an ultrasonic fingerprint sensor under a portion of the display panel;
- and
- a first adhesive that attaches the ultrasonic fingerprint sensor directly to the display panel;
- wherein each of the plurality of components in a portion of the display panel that horizontally overlaps the ultrasonic fingerprint sensor is in contact with at least one other component from the plurality of components of the display panel.
Dependencies are inferred from the claim text.