US-12619328-B2 - Electronic device

US12619328B2US 12619328 B2US12619328 B2US 12619328B2US-12619328-B2

Abstract

Disclosed is an electronic device including a display layer, and a sensor layer, wherein the sensor layer includes a plurality of first sensing electrodes including one end and the other end, a plurality of second sensing electrodes, a plurality of first trace lines and a plurality of second trace lines connected the plurality of first sensing electrodes, and a plurality of third trace lines connected to the plurality of second sensing electrodes, respectively, wherein the sensor layer operates in a self-touch scheme during a first section of a sensing frame, wherein a driving signal is provided only to the plurality of first trace lines and the plurality of third trace lines during the first section of the sensing frame.

Inventors

BOGEUN YUK
Min-Hong Kim
Mi-ae Park
Jungmok PARK

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20240529
Priority Date: 20230831

Claims (20)

1 . An electronic device comprising: a display layer; and a sensor layer disposed on the display layer and including an active area and a peripheral area disposed adjacent to the active area, wherein the sensor layer includes: a plurality of first sensing electrodes extending along a second direction, each of the plurality of first sensing electrodes including one end and the other end spaced apart from each other in the second direction; a plurality of second sensing electrodes extending along a first direction intersecting the second direction; a plurality of first trace lines, each of the plurality of first trace lines being electrically connected to the one end of each of at least some of the plurality of first sensing electrodes; a plurality of second trace lines, each of the plurality of second trace lines being electrically connected to the other end of each of a remainder of the plurality of first sensing electrodes; and a plurality of third trace lines electrically connected to the plurality of second sensing electrodes, respectively, wherein the at least some of the plurality of first sensing electrodes and the plurality of second sensing electrodes operate in a self-touch scheme during a first section of a sensing frame, and wherein a driving signal is provided only to the plurality of first trace lines and the plurality of third trace lines during the first section of the sensing frame.
2 . The electronic device of claim 1 , further comprising: a data driver configured to drive the display layer; a sensor driver configured to drive the sensor layer; and a display signal line electrically connected to the data driver and transmitting a signal for controlling the display layer, wherein the sensor driver is electrically connected to the plurality of second trace lines, and wherein the plurality of second trace lines are overlapped with the display signal line in a plan view.
3 . The electronic device of claim 2 , wherein the sensor driver is electrically connected to the plurality of first trace lines, and wherein the plurality of first trace lines are not overlapped with the display signal line in a plan view.
4 . The electronic device of claim 2 , wherein the sensor driver is electrically connected to the plurality of third trace lines, and wherein the plurality of third trace lines are not overlapped with the display signal line in a plan view.
5 . The electronic device of claim 2 , further comprising: a flexible circuit board electrically connected to the display layer and the sensor layer, wherein the display signal line and the sensor driver are disposed on the flexible circuit board.
6 . The electronic device of claim 5 , wherein the plurality of first trace lines include: first-first lines each connected to the one end of each of the at least some of the plurality of first sensing electrodes; and first-second lines extending respectively from the first-first lines and connected to the sensor driver, wherein the first-first lines are arranged in the peripheral area, and wherein the first-second lines are arranged on the flexible circuit board.
7 . The electronic device of claim 1 , wherein the plurality of first sensing electrodes are driven in a mutual-touch scheme during a second section of the sensing frame following the first section of the sensing frame.
8 . The electronic device of claim 7 , wherein a transmission signal is provided to the plurality of first trace lines and the plurality of second trace lines during the second section, and wherein a reception signal generated based on the transmission signal is provided to the plurality of third trace lines.
9 . The electronic device of claim 1 , wherein the at least some of the plurality of first sensing electrodes and the remainder of the plurality of first sensing electrodes are alternately arranged along the first direction.
10 . The electronic device of claim 1 , wherein a portion of each of the plurality of first trace lines is disposed at one side of the peripheral area.
11 . The electronic device of claim 10 , wherein a portion of each of the plurality of second trace lines is disposed at the other side of the peripheral area which is spaced apart from the one side of the peripheral area in the second direction.
12 . The electronic device of claim 10 , wherein a portion of each of the plurality of third trace lines is disposed adjacent to the portion of each of the plurality of first trace lines.
13 . An electronic device comprising: a display layer; a data driver configured to drive the display layer; a sensor layer disposed on the display layer; a sensor driver configured to drive the sensor layer; and a display signal line electrically connected to the data driver, wherein the sensor layer includes: a plurality of first sensing electrodes extending along a second direction, each of the plurality of first sensing electrodes including one end and the other end spaced apart from each other in the second direction; a plurality of first trace lines, each of the plurality of first trace lines being electrically connected to one end of each of at least some of the plurality of first sensing electrodes; and a plurality of second trace lines, each of the plurality of second trace lines being electrically connected to the other end of each of a remainder of the plurality of first sensing electrodes, wherein the plurality of first trace lines and the plurality of second trace lines are connected to the sensor driver, wherein the plurality of second trace lines are overlapped with the display signal line in a plan view, wherein the plurality of first trace lines are not overlapped with the display signal line in a plan view, and wherein a driving signal is provided to the plurality of first trace lines during a first section of a sensing frame.
14 . The electronic device of claim 13 , wherein the at least some of the plurality of first sensing electrodes and the remainder of the plurality of first sensing electrodes are alternately arranged.
15 . The electronic device of claim 13 , further comprising: a flexible circuit board electrically connected to the display layer and the sensor layer, wherein the display signal line and the sensor driver are disposed on the flexible circuit board.
16 . The electronic device of claim 13 , wherein the sensor layer further includes: a plurality of second sensing electrodes extending along a first direction intersecting the second direction; and a plurality of third trace lines electrically connected to the plurality of second sensing electrodes, respectively, and wherein the driving signal is provided to the plurality of third trace lines during the first section.
17 . The electronic device of claim 16 , wherein the at least some of the plurality of first sensing electrodes and the plurality of second sensing electrodes operate in a self-touch scheme during the first section.
18 . The electronic device of claim 16 , wherein the plurality of third trace lines is spaced apart from the display signal line in a plan view.
19 . The electronic device of claim 16 , wherein the sensing frame further includes a second section following the first section, and wherein the plurality of first sensing electrodes are driven in a mutual-touch scheme during the second section.
20 . The electronic device of claim 19 , wherein a transmission signal is provided to the plurality of first trace lines and the plurality of second trace lines during the second section, and wherein a reception signal generated based on the transmission signal is provided to the plurality of third trace lines.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2023-0115044 filed on Aug. 31, 2023, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. BACKGROUND Embodiments of the present disclosure described herein relate to an electronic device with improved sensing reliability. Multimedia electronic devices such as a television, a mobile phone, a tablet computer, a navigation system, a game console, and the like are equipped with an electronic device for displaying an image. The electronic devices may have a sensor layer that may provide a touch-based input scheme that allows a user to easily, intuitively, and conveniently input information or commands, in addition to a typical input scheme such as a button, a keyboard, a mouse, and the like. The sensor layer may sense whether a user's body has made a touch input. SUMMARY Embodiments of the present disclosure provide an electronic device with improved sensing reliability. According to an embodiment, an electronic device includes a display layer, and a sensor layer that is disposed on the display layer and includes an active area and a peripheral area disposed adjacent to the active area, the sensor layer includes a plurality of first sensing electrodes extending along a first direction, each of the plurality of first sensing electrodes including one end and the other end spaced apart from each other in the first direction, a plurality of second sensing electrodes extending along the second direction intersecting the first direction, a plurality of first trace lines, each of the plurality of the first trace lines being electrically connected to the one end of each of at least some of the plurality of first sensing electrodes, a plurality of second trace lines, each of the plurality of the second trace lines being electrically connected to the other end of each of a remainder of the plurality of first sensing electrodes, and a plurality of third trace lines electrically connected to the plurality of second sensing electrodes, respectively, the plurality of first sensing electrodes and the plurality of second sensing electrodes operate in a self-touch scheme during the first section of the sensing frame, and a driving signal is provided only to the plurality of first trace lines and the plurality of third trace lines during the first section of the sensing frame. The electronic device may further include a data driver that drives the display layer, a sensor driver that drives the sensor layer, and a display signal line electrically connected to the data driver and transmitting a signal for controlling the display layer, the sensor driver may be electrically connected to the plurality of second trace lines, and the plurality of second trace lines may be overlapped with the display signal line in a plan view. The sensor driver may be electrically connected to the plurality of first trace lines, and the plurality of first trace lines may not be overlapped with the display signal line in a plan view. The sensor driver may be electrically connected to the plurality of third trace lines, and the plurality of third trace lines may not be overlapped with the display signal line in a plan view. The electronic device may further include a flexible circuit board electrically connected to the display layer and the sensor layer, and the display signal line and the sensor driver may be disposed on the flexible circuit board. The plurality of first trace lines may include first-first lines each connected to the one end of each of at least some of the plurality of first sensing electrodes, and first-second lines extending respectively from the first-first lines and connected to the sensor driver, the first-first lines may be arranged in the peripheral area, and the first-second lines may be arranged on the flexible circuit board. The plurality of first sensing electrodes and the plurality of second sensing electrodes may be driven in a mutual-touch scheme during a second section of the sensing frame following the first section of the sensing frame. A transmission signal may be provided to the plurality of first trace lines and the plurality of second trace lines during the second section, and a reception signal generated based on the transmission signal may be provided to the plurality of third trace lines. The at least some of the plurality of first sensing electrodes and the remainder of the plurality of first sensing electrodes may be alternately arranged along the second direction. A portion of each of the plurality of first trace lines may be disposed at one side of the peripheral area. A portion of each of the plurality of second trace lines may be disposed at the other side of the peripheral area which is spaced apart from the one side of the peripheral area in the first direction. A portion of each of the plurality of thir