Back to results
US 11,899,866 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorsJisu Yeom, Suyul Seo, Seongjun Lee, Dong-Hwan Lee
Life of this patent
Estimating the term…
Abstract
A display device includes a display panel, a plurality of first sensing electrodes disposed on the display panel, and a plurality of second sensing electrodes disposed on the first sensing electrodes and isolated from the first sensing electrodes. A wire width of each first sensing electrode of a second group is smaller than a wire width of each first sensing electrode of a first group, and a wire width of each second sensing electrode of a fourth group is smaller than a wire width of each second sensing electrode of a third group.
Claims20
A display device comprising:
- a display panel;
- a plurality of first sensing electrodes disposed on the display panel, the plurality of first sensing electrodes including a first group of sensing electrodes and a second group of sensing electrodes;
- a plurality of second sensing electrodes disposed on the first sensing electrodes and isolated from the first sensing electrodes, the plurality of second sensing electrodes including a third group of sensing electrodes and a fourth group of second sensing electrodes;
- and
- a sensor controller configured to provide a transmit signal of an active level to each of the plurality of first sensing electrodes in a first sensing mode, wherein active periods of transmit signals provided to the first sensing electrodes of the first group in the first sensing mode do not overlap each other,
- wherein a wire width of each first sensing electrode of the second group is smaller than a wire width of each first sensing electrode of the first group,
- wherein a wire width of each second sensing electrode of the fourth group is smaller than a wire width of each second sensing electrode of the third group,
- wherein a first portion of each first sensing electrode of the second group and a first portion of each second sensing electrode of the fourth group is disposed in a fingerprint sensing area and a second portion of each first sensing electrode of the second group and a second portion of each second sensing electrode of the fourth group is disposed in a non-fingerprint sensing area,
- wherein the sensor controller sequentially provides transmit signals of an active level to the first sensing electrodes of the second group in a second sensing mode,
- wherein the sensor controller maintains the transmit signals provided to the first sensing electrodes of the first group at an inactive level in the second sensing mode,
- wherein, in the first sensing mode, first active periods of the transmit signals provided to a first electrode and a second electrode among the first sensing electrodes of the second group overlap each other, second active periods of the transmit signals provided to a third electrode and a fourth electrode among the first sensing electrodes of the second group overlap each other, and the first active periods and the second active periods do not overlap, and
- wherein, in the first sensing mode, the active periods of transmit signals provided to the first sensing electrodes of the first group and the first active periods and the second active periods do not overlap each other.
9 more elements
A display device comprising:
- a display panel;
- a base layer disposed on the display panel;
- a first conductive layer disposed on the base layer;
- a plurality of first sensing electrodes formed by the first conductive layer, the plurality of first sensing electrodes including a first group of first sensing electrodes and a second group of first sensing electrodes;
- a sensor insulating layer disposed on the first conductive layer;
- a base substrate;
- a second conductive layer disposed under the base substrate;
- a plurality of second sensing electrodes formed by the second conductive layer, the plurality of second sensing electrodes including a third group of second sensing electrodes and a fourth group of second sensing electrodes;
- an adhesive layer configured to bond the sensor insulating layer and the second conductive layer;
- and
- a sensor controller configured to provide a transmit signal of an active level to each of a plurality of first sensing electrodes in a first sensing mode, wherein active periods of transmit signals provided to the first sensing electrodes of the first group in the first sensing mode do not overlap each other,
- wherein the plurality of first sensing electrodes is formed by the first conductive layer, and a plurality of second sensing electrodes is formed by the second conductive layer,
- wherein a first portion of each first sensing electrode of the second group and a first portion of each second sensing electrode of the fourth group is disposed in a fingerprint sensing area and a second portion of each first sensing electrode of the second group and a second portion of each second sensing electrode of the fourth group is disposed in a non-fingerprint sensing area,
- wherein the sensor controller sequentially provides transmit signals of an active level to the first sensing electrodes of the second group in a second sensing mode,
- wherein the sensor controller maintains the transmit signals provided to the first sensing electrodes of the first group at an inactive level in the second sensing mode,
- wherein, in the first sensing mode, first active periods of the transmit signals provided to a first electrode and a second electrode among the first sensing electrodes of the second group overlap each other, second active periods of the transmit signals provided to a third electrode and a fourth electrode among the first sensing electrodes of the second group overlap each other, and the first active periods and the second active periods do not overlap, and
- wherein, in the first sensing mode, the active periods of transmit signals provided to the first sensing electrodes of the first group and the first active periods and the second active periods do not overlap each other.
14 more elements
Dependencies are inferred from the claim text.