US-12619329-B2 - Electronic device

Abstract

An electronic device includes a display layer, a sensor layer in which an active area is defined, and a sensor driving unit, wherein the active area is defined as a first area and a second area, the sensor layer includes a plurality of first electrodes, each of which includes a plurality of first sub-electrodes and a plurality of second sub-electrodes arranged alternately in the first direction, a plurality of second electrodes, a first line, a second line, a third line connected to one of the plurality of first sub-electrodes and in the first area, and a fourth line connected to one of the plurality of second sub-electrodes and in the second area, and the senor driving unit is configured to compensate for coordinates based on a difference between a first sensing signal sensed in the third line and a second sensing signal sensed in the fourth line.

Inventors

• Sanghun Park
• Gwang-Bum Ko
• Byeongkyu JEON
• Joo-Hyeon Jeong

Assignees

• SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date

20260505

Application Date

20240926

Priority Date

20240130

Claims (20)

1. 1 . An electronic device comprising: a display layer; a sensor layer on the display layer and in which an active area is defined; and a sensor driving unit configured to drive the sensor layer, wherein a portion of the active area is defined as a first area, and the other portion of the active area is defined as a second area adjacent to the first area in a first direction, wherein the sensor layer includes: a plurality of first electrodes, each of the plurality of first electrodes includes a plurality of first sub-electrodes and a plurality of second sub-electrodes arranged alternately in the first direction; a plurality of second electrodes, each of the plurality of second electrodes extends in a second direction intersecting the first direction; a first line electrically connected to the plurality of first sub-electrodes; a second line electrically connected to the plurality of second sub-electrodes; a third line extending in the second direction, connected to one of the plurality of first sub-electrodes, and in the first area; and a fourth line extending in the second direction, connected to one of the plurality of second sub-electrodes, and in the second area, and wherein the sensor driving unit is configured to compensate for coordinates based on a difference between a first sensing signal sensed in the third line and a second sensing signal sensed in the fourth line.
2. 2 . The electronic device of claim 1 , wherein the third line and the fourth line are spaced apart from each other in the first direction with at least one of the plurality of first sub-electrodes and/or at least one of the plurality of second sub-electrodes interposed therebetween.
3. 3 . The electronic device of claim 1 , wherein the sensor layer further includes a plurality of fifth lines connected to the plurality of second electrodes, respectively.
4. 4 . The electronic device of claim 1 , wherein at least a portion of each of the first line and the second line extends in the first direction and is in the active area.
5. 5 . The electronic device of claim 1 , wherein the plurality of first sub-electrodes and the plurality of second sub-electrodes are electrically insulated from each other.
6. 6 . The electronic device of claim 1 , wherein the first line, the second line, the third line, and the fourth line are connected to the sensor driving unit.
7. 7 . The electronic device of claim 6 , wherein the sensor driving unit includes a differential amplifier, the first line is electrically connected to a first terminal of the differential amplifier, and the second line is electrically connected to a second terminal of the differential amplifier.
8. 8 . The electronic device of claim 1 , wherein, in a plan view, the third line and the fourth line overlap the plurality of second electrodes.
9. 9 . The electronic device of claim 1 , wherein the sensor driving unit includes a sensor controlling circuit, a signal generating circuit, and an input detecting circuit, and wherein the signal generating circuit is configured to sequentially provide a driving signal to the plurality of second electrodes.
10. 10 . The electronic device of claim 9 , wherein the input detecting circuit includes a plurality of signal receiving unit, each of which includes an amplifier, and wherein the third line and the fourth line are electrically connected to the plurality of signal receiving units.
11. 11 . The electronic device of claim 1 , wherein the first line and the second line are arranged in the active area.
12. 12 . The electronic device of claim 1 , wherein the plurality of first electrodes extends in the first direction, and the plurality of first electrodes are arranged in the second direction, wherein the plurality of second electrodes is arranged in the first direction, and wherein the plurality of first electrodes and the plurality of second electrodes are insulated from and intersect each other.
13. 13 . An electronic device comprising: a display layer; a sensor layer on the display layer; and a sensor driving unit configured to drive the sensor layer, wherein the sensor layer includes: a plurality of first electrodes, each of the plurality of first electrodes includes a plurality of first sub-electrodes and a plurality of second sub-electrodes arranged alternately in a first direction; a plurality of second electrodes, each of the plurality of second electrodes extends in a second direction intersecting the first direction; a first line extending in the first direction and electrically connected to the plurality of first sub-electrodes; a second line extending in the first direction and electrically connected to the plurality of second sub-electrodes; a third line extending in the second direction and connected to one of the plurality of first sub-electrodes; and a fourth line extending in the second direction and connected to one of the plurality of second sub-electrodes, wherein the third line and the fourth line are spaced apart from each other in the first direction with at least one of the plurality of first sub-electrodes and/or at least one of the plurality of second sub-electrodes interposed therebetween, and wherein the sensor driving unit is configured to compensate for coordinates based on a difference between a first sensing signal sensed in the third line and a second sensing signal sensed in the fourth line.
14. 14 . The electronic device of claim 13 , wherein an active area including a first area and a second area adjacent to the first area in the first direction is defined in the sensor layer, and wherein the third line is in the first area, and the fourth line is in the second area.
15. 15 . The electronic device of claim 14 , wherein the first line and the second line are arranged in the active area.
16. 16 . The electronic device of claim 13 , wherein the sensor layer further includes a plurality of fifth lines connected to the plurality of second electrodes, respectively.
17. 17 . The electronic device of claim 14 , wherein at least a portion of each of the first line and the second line extends in the first direction and is in the active area.
18. 18 . The electronic device of claim 13 , wherein the plurality of first sub-electrodes and the plurality of second sub-electrodes are electrically insulated from each other.
19. 19 . The electronic device of claim 13 , wherein, in a plan view, the third line and the fourth line overlap the plurality of second electrodes.
20. 20 . The electronic device of claim 13 , wherein the sensor driving unit includes a sensor controlling circuit, a signal generating circuit, and an input detecting circuit, wherein the input detecting circuit includes a plurality of signal receiving unit, each of which includes an amplifier, and wherein the third line and the fourth line are electrically connected to the plurality of signal receiving units.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application claims priority to and the benefit of Korean Patent Application No 10-2024-0013894, filed on Jan. 30, 2024, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. BACKGROUND 1. Field Aspects of some embodiments of the present disclosure described herein relate to an electronic device. 2. Description of the Related Art Multimedia electronic devices such as televisions, mobile phones, tablet computers, navigation systems, game consoles, and vehicle displays may display images and provide a touch-based input manner that allows a user to relatively easily, intuitively, and conveniently input information or commands in addition to general input manners such as buttons, keyboards, and mice. The above information disclosed in this Background section is only for enhancement of understanding of the background and therefore the information discussed in this Background section does not necessarily constitute prior art. SUMMARY Aspects of some embodiments of the present disclosure described herein relate to an electronic device having relatively improved sensing reliability. According to some embodiments, an electronic device includes a display layer, a sensor layer on the display layer and in which an active area is defined, and a sensor driving unit that drives the sensor layer, wherein a portion of the active area is defined as a first area, and the other portion of the active area is defined as a second area adjacent to the first area in a first direction, the sensor layer includes a plurality of first electrodes, each of which includes a plurality of first sub-electrodes and a plurality of second sub-electrodes arranged alternately in the first direction. a plurality of second electrodes, each of which extends in a second direction intersecting the first direction, a first line electrically connected to the plurality of first sub-electrodes, a second line electrically connected to the plurality of second sub-electrodes, a third line extending in the second direction, connected to one of the plurality of first sub-electrodes, and in the first area, and a fourth line extending in the second direction, connected to one of the plurality of second sub-electrodes, and in the second area, and the senor driving unit compensates for coordinates based on a difference between a first sensing signal sensed in the third line and a second sensing signal sensed in the fourth line. According to some embodiments, the third line and the fourth line may be spaced apart from each other in the first direction with at least one of the plurality of first sub-electrodes and/or at least one of the plurality of second sub-electrodes interposed therebetween. According to some embodiments, the sensor layer may further include a plurality of fifth lines connected to the plurality of second electrodes, respectively. According to some embodiments, at least a portion of each of the first line and the second line may extends in the first direction and may be in the active area. According to some embodiments, the plurality of first sub-electrodes and the plurality of second sub-electrodes may be electrically insulated from each other. According to some embodiments, the first line, the second line, the third line, and the fourth line may be connected to the sensor driving unit. According to some embodiments, the sensor driving unit may include a differential amplifier, the first line may be electrically connected to a first terminal of the differential amplifier, and the second line may be electrically connected to a second terminal of the differential amplifier. According to some embodiments, in a plan view, the third line and the fourth line overlap the plurality of second electrodes. According to some embodiments, the sensor driving unit may include a sensor controlling circuit, a signal generating circuit, and an input detecting circuit, and the signal generating circuit sequentially may provide a driving signal to the plurality of second electrodes. According to some embodiments, the input detecting circuit may include a plurality of signal receiving unit, each of which includes an amplifier, and the third line and the fourth line may be electrically connected to the plurality of signal receiving units. According to some embodiments, the first line and the second line may be arranged in the active area. According to some embodiments, the plurality of first electrodes may extend in the first direction, the plurality of first electrodes may be arranged in the second direction, the plurality of second electrodes may be arranged in the first direction, and the plurality of first electrodes and the plurality of second electrodes may be insulated from and intersect each other. According to some embodiments, an electronic device includes a display layer, a sensor layer on the display layer, and a sensor driving unit that drives the