Granted Patent B2

US 12,613,596 · App. 19/007,554 · Granted Apr 28, 2026

Inventors: Hyungbae Kim (Hwaseongsi, KR); Hyun-Wook Cho (Yongin-si, KR); Sangkook Kim (Cheonan-si, KR); Taejoon Kim (Seongnam-si, KR); Jaehyun Park (Hwaseong-si, KR); Jiyeong Lee (Seoul, KR)

Assignee: Samsung Display Co., Ltd.

G06F3/0418G06F3/04164G06F3/0446H10K59/40G06F3/0412G06F2203/04111

Abstract

Claims (80)

1 . A display device comprising:

a display panel configured to display an image;

an input sensor disposed on the display panel and including a first sensing area configured to sense an input and a second sensing area disposed adjacent to the first sensing area in a second direction, wherein the first sensing area includes a first sub-area and a second sub-area, which are disposed adjacent to each other in a first direction crossing the second direction, and the second sensing area includes a third sub-area and a fourth sub-area, which are disposed adjacent to each other in the first direction;

a first sensor controller configured to drive the first sensing area; and

a second sensor controller configured to drive the second sensing area,

wherein the input sensor includes:

first sensing electrodes disposed in the first sub-area to receive a first transmission signal from the first sensor controller;

second sensing electrodes disposed in the first sub-area and intersected with the first sensing electrodes;

third sensing electrodes disposed in the second sub-area to receive a second transmission signal having a phase inverted from a phase of the first transmission signal from the first sensor controller;

fourth sensing electrodes disposed in the second sub-area and intersected with the third sensing electrodes;

fifth sensing electrodes disposed in the third sub-area to receive a third transmission signal having a phase inverted from that of the first transmission signal from the second sensor controller;

sixth sensing electrodes disposed in the third sub-area and intersected with the fifth sensing electrodes;

seventh sensing electrodes disposed in the fourth sub-area to receive a fourth transmission signal having a phase inverted from that of the third transmission signal from the second sensor controller; and

eighth sensing electrodes disposed in the fourth sub-area and intersected with the seventh sensing electrodes, and

wherein the second transmission signal transmitted to the third sensing electrodes in the second sub-area has a phase inverted from that of the fourth transmission signal transmitted to the seventh sensing electrodes in the fourth sub-area.

2 . The display device of claim 1 , wherein the first sensor controller includes:

a first data acquisition part connected to the second sensing electrodes; and

a second data acquisition part connected to the fourth sensing electrodes,

wherein a first reception signal is transmitted from the second sensing electrodes to the first data acquisition part, and a second reception signal is transmitted from the fourth sensing electrodes to the second data acquisition part.

3 . The display device of claim 1 , wherein the first sensing electrodes are spaced apart from the third sensing electrodes at a boundary between the first sub-area and the second sub-area.

4 . The display device of claim 3 , wherein each of the first sensing electrodes and the third sensing electrodes extends in the first direction, and

each of the second sensing electrodes and the fourth sensing electrodes extends in a second direction crossing the first direction.

5 . The display device of claim 4 , wherein the input sensor further includes:

first transmission lines connected to the first sensing electrodes;

first reception lines connected to the second sensing electrodes;

second transmission lines connected to the third sensing electrodes; and

second reception lines connected to the fourth sensing electrodes.

6 . The display device of claim 5 , wherein the first sensing electrodes and the third sensing electrodes have symmetric shapes based on the boundary when viewed on a plane.

7 . The display device of claim 6 , wherein the first transmission lines include a resistance compensation pattern configured to compensate a length difference between the first transmission lines and the second transmission lines.

8 . The display device of claim 7 , wherein the first transmission signal has a same amplitude as the second transmission signal.

9 . The display device of claim 6 , wherein the first transmission signal and the second transmission signal have different amplitudes, and

an amplitude difference between the first transmission signal and the second transmission signal is set according to a line resistance difference between the first transmission lines and the second transmission lines.

10 . The display device of claim 5 , wherein the first sensing electrodes and the third sensing electrodes have the same length in the first direction,

the first sensing electrodes and the third sensing electrodes have different areas, when viewed on a plane, and

area differences between the first sensing electrodes and the third sensing electrodes are set according to line resistance differences between the first transmission lines and the second transmission lines.

11 . The display device of claim 10 , wherein the input sensor includes:

first dummy patterns disposed around the first sensing electrodes; and

second dummy patterns disposed around the third sensing electrodes, and

the first dummy patterns and the second dummy patterns have different areas due to area differences between the first sensing electrodes and the third sensing electrodes.

12 . The display device of claim 10 , wherein the first transmission signal and the second transmission signal have a same amplitude as each other.

13 . The display device of claim 5 , wherein the first sensing electrodes and the third sensing electrodes have asymmetric shapes based on the boundary, when viewed on a plane.

14 . The display device of claim 13 , wherein the first sensing electrodes and the third sensing electrodes have different lengths in the first direction, and

length differences between the first sensing electrodes and the third sensing electrodes are set according to line resistance differences between the first transmission lines and the second transmission lines.

15 . The display device of claim 1 , wherein the second sensor controller includes:

a third data acquisition part connected to the sixth sensing electrodes; and

a fourth data acquisition part connected to the eighth sensing electrodes,

wherein a third reception signal is transmitted from the sixth sensing electrodes to the third data acquisition part, and a fourth reception signal is transmitted from the eighth sensing electrodes to the fourth data acquisition part.

16 . The display device of claim 1 ,

wherein a second boundary sensing electrode is disposed adjacent to a boundary among the second sensing electrodes and has a size different from a size of each of the rest of the second sensing electrodes, and

a fourth boundary sensing electrode is disposed adjacent to a boundary among the fourth sensing electrodes and has a size different from a size of each of the rest of the fourth sensing electrodes.

17 . The display device of claim 1 ,

wherein the first sub-area includes first and second areas, when viewed on a plane,

the second sensing electrodes include first sub-sensing electrodes disposed in the first area and second sub-sensing electrodes disposed in the second area,

the second sub-area includes third and fourth areas, and

the fourth sensing electrodes include third sub-sensing electrodes disposed in the third area and fourth sub-sensing electrodes disposed in the fourth area.

18 . The display device of claim 17 , wherein the input sensor includes:

first transmission lines connected to the first sensing electrodes;

first sub-reception lines connected to the first sub-sensing electrodes;

second sub-reception lines connected to the second sub-sensing electrodes;

second transmission lines connected to the third sensing electrodes;

third sub-reception lines connected to the third sub-sensing electrodes; and

fourth sub-reception lines connected to the fourth sub-sensing electrodes.

19 . The display device of claim 18 , wherein in a first sensing mode, a bias voltage is applied to the first, second, third, and fourth sub-reception lines, and in a second sensing mode, a first sub-transmission signal is applied to each of the first and third sub-reception lines, and a second sub-transmission signal having a phase inverted from a phase of the first sub-transmission signal is applied to each of the second and fourth sub-reception lines.

20 . An electronic device comprising:

a display device comprising:

a display panel configured to display an image;

an input sensor disposed on the display panel and including a first sensing area configured to sense an input and a second sensing area disposed adjacent to the first sensing area in a second direction, wherein the first sensing area includes a first sub-area and a second sub-area, which are disposed adjacent to each other in a first direction crossing the second direction, and the second sensing area includes a third sub-area and a fourth sub-area, which are disposed adjacent to each other in the first direction;

a first sensor controller configured to drive the first sensing area; and

a second sensor controller configured to drive the second sensing area; and

a main controller controlling an operation of the display device,

wherein the input sensor includes:

first sensing electrodes disposed in the first sub-area to receive a first transmission signal from the first sensor controller;

second sensing electrodes disposed in the first sub-area and intersected with the first sensing electrodes;

third sensing electrodes disposed in the second sub-area to receive a second transmission signal having a phase inverted from a phase of the first transmission signal from the first sensor controller;

fourth sensing electrodes disposed in the second sub-area and intersected with the third sensing electrodes;

fifth sensing electrodes disposed in the third sub-area to receive a third transmission signal having a phase inverted from that of the first transmission signal from the second sensor controller;

sixth sensing electrodes disposed in the third sub-area and intersected with the fifth sensing electrodes;

seventh sensing electrodes disposed in the fourth sub-area to receive a fourth transmission signal having a phase inverted from that of the third transmission signal from the second sensor controller; and

eighth sensing electrodes disposed in the fourth sub-area and intersected with the seventh sensing electrodes, and

wherein the second transmission signal transmitted to the third sensing electrodes in the second sub-area has a phase inverted from that of the fourth transmission signal transmitted to the seventh sensing electrodes in the fourth sub-area.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (34)