US 12,597,288 B2 · Display device

Abstract

Provided is a display device including an illuminance sensor. The illuminance sensor includes a read-out line disposed on a substrate and extending in a first direction, a light receiving element disposed on the read-out line, a first sensor transistor configured to control a sensing current based on a voltage of a sensor node, which is a first electrode of the light receiving element, a second sensor transistor configured to supply a reset voltage to the sensor node based on a reset signal, a third sensor transistor configured to electrically connect a first electrode of the first sensor transistor to the read-out line based on a gate signal, and a sensor capacitor comprising a first capacitor electrode electrically connected to the first electrode of the first sensor transistor, and a second capacitor electrode overlapping the first capacitor electrode and electrically connected to the first electrode of the light receiving element.

Claims20

Dependent claims

An illuminance sensor comprising:

a read-out line disposed on a substrate and extending in a first direction;
a light receiving element disposed on the read-out line;
a first sensor transistor configured to control a sensing current based on a voltage of a sensor node, which is a first electrode of the light receiving element;
a second sensor transistor configured to supply a reset voltage to the sensor node in response to a reset signal;
a third sensor transistor configured to electrically connect a first electrode of the first sensor transistor to the read-out line in response to a gate signal;
and
a sensor capacitor comprising a first capacitor electrode electrically connected to the first electrode of the first sensor transistor and a second capacitor electrode overlapping the first capacitor electrode and electrically connected to the first electrode of the light receiving element.

4 more elements

A display device comprising:

a first display area comprising a pixel comprising a light emitting element and a fingerprint sensor which receives light incident on a fingerprint sensor area to recognize a pattern of a user's fingerprint;
and
a second display area disposed adjacent to the first display area and comprising an illuminance sensor which receives light incident on an illuminance sensor area to measure surrounding brightness,
wherein each of the fingerprint sensor and the illuminance sensor comprises:
a read-out line disposed on a substrate and extending in a first direction;
a light receiving element disposed on the read-out line;
a first sensor transistor configured to control a sensing current based on a voltage of a sensor node which is connected to the light receiving element;
a second sensor transistor configured to supply a reset voltage to the sensor node in response to a reset signal;
and
a third sensor transistor configured to electrically connect a first electrode of the first sensor transistor to the read-out line in response to a gate signal, and
wherein the illuminance sensor further comprises a sensor capacitor comprising a first capacitor electrode electrically connected to the first electrode of the first sensor transistor and a second capacitor electrode overlapping the first capacitor electrode and electrically connected to the first electrode of the light receiving element.

8 more elements

Dependencies are inferred from the claim text.

Display device

Life of this patent

Display device

Life of this patent

Abstract

Claims20