US-12625575-B2 - Electronic device including display layer and sensor layer

Abstract

An electronic device includes a sensor layer including a sensing region and a peripheral region adjacent to the sensing region, which are defined therein. The sensor layer includes a plurality of first electrodes, a plurality of second electrodes, a plurality of first trace lines electrically connected to the plurality of first electrodes in a one-to-one correspondence, a plurality of second trace lines electrically connected to the plurality of second electrodes in a one-to-one correspondence, and a first loop trace line electrically connected to one second electrode among the plurality of second electrodes. A first closed loop includes one second trace line among the plurality of second trace lines connected to the one second electrode and the first loop trace line may be defined in the sensor layer.

Inventors

• Hyungbae KIM
• Sanghyun Lim

Assignees

• SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date

20260512

Application Date

20241101

Priority Date

20240117

Claims (19)

1. 1 . An electronic device comprising: a sensor layer including a sensing region and a peripheral region adjacent to the sensing region defined therein, wherein the sensor layer comprises: a plurality of first electrodes disposed in the sensing region and arranged along a first direction; a plurality of second electrodes disposed in the sensing region and arranged along a second direction crossing the first direction; a plurality of first trace lines electrically connected to the plurality of first electrodes in a one-to-one correspondence; a plurality of second trace lines electrically connected to the plurality of second electrodes in a one-to-one correspondence; a first loop trace line electrically connected to one second electrode among the plurality of second electrodes; a display layer disposed below the sensor layer; and a charging coil disposed below the display layer, wherein a first closed loop includes one second trace line among the plurality of second trace lines connected to the one second electrode, wherein the first loop trace line is defined in the sensor layer, and wherein the charging coil overlaps the first closed loop.
2. 2 . The electronic device of claim 1 , wherein the one second trace line and the first loop trace line are electrically connected to one pad.
3. 3 . The electronic device of claim 1 , wherein the one second trace line is disposed in the peripheral region, and the first loop trace line is disposed in the sensing region.
4. 4 . The electronic device of claim 1 , wherein the one second trace line and the first loop trace line are disposed in the peripheral region.
5. 5 . The electronic device of claim 1 , wherein the one second trace line is spaced apart from the sensing region with the first loop trace line interposed therebetween.
6. 6 . The electronic device of claim 1 , wherein the one second trace line is spaced apart from the first loop trace line with the sensing region interposed therebetween.
7. 7 . The electronic device of claim 1 , wherein: the sensor layer further comprises a second loop trace line electrically connected to another second electrode among the plurality of second electrodes; and a second closed loop is defined by a second trace line among the plurality of second trace lines connected to the another second electrode, the another second electrode, and the second loop trace line.
8. 8 . The electronic device of claim 1 , wherein the sensor layer further comprises a plurality of pads electrically connected to the plurality of first trace lines and the plurality of second trace lines, wherein the plurality of pads are arranged along the first direction.
9. 9 . The electronic device of claim 1 , wherein the one second electrode extends along the first direction.
10. 10 . The electronic device of claim 1 , wherein the sensor layer further comprises a plurality of pads electrically connected to the plurality of first trace lines and the plurality of second trace lines, wherein the one second electrode extends in a direction crossing an arrangement direction of the plurality of pads.
11. 11 . The electronic device of claim 1 , wherein the first loop trace line is disposed on a layer different from that of the plurality of second trace lines.
12. 12 . An electronic device comprising: a display panel comprising a display layer configured to display an image, and a sensor layer disposed on the display layer and including a sensing region and a peripheral region adjacent to the sensing region, which are defined therein; and a charging coil disposed below the display panel, wherein the sensor layer comprises: a plurality of first electrodes disposed in the sensing region and arranged along a first direction; a plurality of second electrodes disposed in the sensing region and arranged along a second direction crossing the first direction; and a plurality of trace lines connected to the plurality of first electrodes and the plurality of second electrodes in a one-to-one correspondence, wherein a closed loop including one trace line among the plurality of trace lines is defined in the sensor layer.
13. 13 . The electronic device of claim 12 , wherein the closed loop overlaps the charging coil.
14. 14 . The electronic device of claim 12 , wherein: the sensor layer further comprises a loop trace line electrically connected to the one trace line; and the closed loop includes the loop trace line.
15. 15 . The electronic device of claim 14 , wherein: the one trace line is disposed in the peripheral region; and the loop trace line is disposed in the sensing region.
16. 16 . The electronic device of claim 14 , wherein the one trace line is spaced apart from the sensing region with the loop trace line interposed therebetween.
17. 17 . The electronic device of claim 14 , wherein the one trace line is spaced apart from the loop trace line with the sensing region interposed therebetween.
18. 18 . An electronic device comprising: a display panel comprising a display layer and a sensor layer disposed on the display layer; and a charging coil disposed below the display panel, wherein the sensor layer comprises: a plurality of first electrodes arranged along a first direction; a plurality of second electrodes arranged along a second direction crossing the first direction; and a loop trace line electrically connected to one electrode among the plurality of first electrodes and the plurality of second electrodes, wherein: a closed loop overlapping the charging coil is defined in the sensor layer; and the closed loop includes the loop trace line.
19. 19 . The electronic device of claim 18 , wherein: the sensor layer further comprises a plurality of first trace lines electrically connected to the plurality of first electrodes in a one-to-one correspondence and a plurality of second trace lines electrically connected to the plurality of second electrodes in a one-to-one correspondence; and the closed loop further comprises a trace line among the plurality of first trace lines and the plurality of second trace lines electrically connected to the one electrode.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This U.S. non-provisional patent application claims priority under 35 U.S.C. § 119 of Korean Patent Application No. 10-2024-0007504, filed on Jan. 17, 2024, the entire contents of which are hereby incorporated by reference. BACKGROUND The present disclosure relates to an electronic device with improved sensing sensitivity. Multimedia electronic devices such as televisions, mobile phones, tablet computers, laptops, navigation systems, and game consoles include display devices for displaying images. Electronic devices may include a sensor layer (or input sensor) capable of providing a touch-based input method that allows a user to easily, intuitively, and conveniently input information or commands in addition to typical input methods such as a button, a keyboard, and a mouse. The sensor layer may sense a touch or pressure of a user. There is an increasing demand for the use of a pen for a user accustomed to inputting information by using a writing instrument or for a detailed touch input for specific application programs (for example, application programs for sketching or drawing). SUMMARY The present disclosure may provide an electronic device with improved sensing sensitivity. An embodiment of the inventive concept provides an electronic device including a sensor layer including a sensing region and a peripheral region adjacent to the sensing region, which are defined therein, wherein the sensor layer includes a plurality of first electrodes disposed in the sensing region and arranged along a first direction, a plurality of second electrodes disposed in the sensing region and arranged along a second direction crossing the first direction, a plurality of first trace lines electrically connected to the plurality of first electrodes in a one-to-one correspondence, a plurality of second trace lines electrically connected to the plurality of second electrodes in a one-to-one correspondence, and a first loop trace line electrically connected to one second electrode among the plurality of second electrodes, wherein a first closed loop includes a second trace line among the plurality of second trace lines connected to the one second electrode, and the first loop trace line may be defined in the sensor layer. In an embodiment, the one second trace line and the first loop trace line may be electrically connected to one pad. In an embodiment, the one second trace line may be disposed in the peripheral region, and the first loop trace line may be disposed in the sensing region. In an embodiment, the one second trace line and the first loop trace line may be disposed in the peripheral region. In an embodiment, the one second trace line may be spaced apart from the sensing region with the first loop trace line interposed therebetween. In an embodiment, the one second trace line may be spaced apart from the first loop trace line with the sensing region interposed therebetween. In an embodiment, the sensor layer may further include a second loop trace line electrically connected to another second electrode among the plurality of second electrodes, and a second closed loop may be defined by a second trace line among the plurality of second trace lines connected to the another second electrode, the another second electrode, and the second loop trace line. In an embodiment, the sensor layer may further include a plurality of pads electrically connected to the plurality of first trace lines and the plurality of second trace lines, wherein the plurality of pads may be arranged along the first direction. In an embodiment, the one second electrode may extend along the first direction. In an embodiment, the sensor layer may further include a plurality of pads electrically connected to the plurality of first trace lines and the plurality of second trace lines, wherein the one second electrode may be extend in a direction crossing an arrangement direction of the plurality of pads. In an embodiment, the first loop trace line may be disposed on a layer different from that of the plurality of second trace lines. In an embodiment, the electronic device may further include a display layer disposed below the sensor layer, and a charging coil disposed below the display layer, wherein the charging coil may overlap the first closed loop. In an embodiment of the inventive concept, an electronic device includes: a display panel including a display layer configured to display an image and a sensor layer disposed on the display layer and including a sensing region and a peripheral region adjacent to the sensing region, which are defined therein; and a charging coil disposed below the display panel, wherein the sensor layer includes a plurality of first electrodes disposed in the sensing region and arranged along a first direction, a plurality of second electrodes disposed in the sensing region and arranged along a second direction crossing the first direction, and a plurality of trace lines connected to th