US-20260127990-A1 - ELECTRONIC DEVICE AND DETECTION METHOD THEREOF

US20260127990A1US 20260127990 A1US20260127990 A1US 20260127990A1US-20260127990-A1

Abstract

An electronic device is provided. The substrate includes an active area and a peripheral area surrounding the active area. The first signal transmission signal line and the control signal line are disposed in the peripheral area. The first common voltage lines are disposed in the active area. The first switch components are coupled between the first common voltage lines and the first signal transmission line. In a display mode, the circuit board provides a first voltage to the first switch components through the control line, and the first common voltage lines are coupled to the first signal transmission line. In a sensing mode, the driving chip provides a sensing signal to the first common voltage lines, the circuit board provides a second voltage to the first switch components through the control line, and the first common voltage lines are not coupled to the first signal transmission line.

Inventors

Chieh-Chung PENG
Wei-Sheng KAO
Yi-Dan OU

Assignees

Innolux Corporation

Dates

Publication Date: 20260507
Application Date: 20251003
Priority Date: 20241104

Claims (20)

1 . An electronic device, having a display mode and a sensing mode, wherein the electronic device comprises: a panel, comprising: a substrate, comprising an active area and a peripheral area surrounding the active area; a first signal transmission line, disposed in the peripheral area; a control line, disposed in the peripheral area; a plurality of first common voltage lines, disposed in the active area; a plurality of first switch components, coupled between the plurality of first common voltage lines and the first signal transmission line; and a driving chip, coupled to the plurality of first common voltage lines; and a circuit panel, coupled to the control line, wherein in the display mode, the circuit board provides a first voltage to the plurality of first switch components through the control line, so that the plurality of first common voltage lines are coupled to the first signal transmission line, wherein in the sensing mode, the driving chip provides a sensing signal to the plurality of first common voltage lines, and the circuit board provides a second voltage to the plurality of first switch components through the control line, so that the plurality of first common voltage lines are not coupled to the first signal transmission line.
2 . The electronic device according to claim 1 , wherein the panel further comprises a second signal transmission line and a plurality of second common voltage lines, the second signal transmission line is disposed in the peripheral area and coupled to the circuit board, and the plurality of second common voltage lines are disposed in the active area.
3 . The electronic device according to claim 2 , wherein in a top view, one of the plurality of second common voltage lines is located between two of the plurality of first common voltage lines adjacent to each other.
4 . The electronic device according to claim 2 , wherein in the display mode, the plurality of second common voltage lines are coupled to the second signal transmission line, and in the sensing mode, the plurality of second common voltage lines are not coupled to the second transmission line.
5 . The electronic device according to claim 2 , wherein the panel further comprises a plurality of connection pads disposed on the substrate, and the plurality of first common voltage lines and the plurality of second common voltage lines are coupled to the driving chip through the connection pads.
6 . The electronic device according to claim 5 , wherein in a top view, the plurality of connection pads, the first signal transmission line, the second signal transmission line and the control line are adjacent to a first side of the active area.
7 . The electronic device according to claim 6 , wherein a portion of each of the first signal transmission line, the second signal transmission line and the control line overlaps with the driving chip.
8 . The electronic device according to claim 5 , wherein in a top view, the plurality of connection pads are adjacent to a first side of the active area, the first signal transmission line, the second signal transmission line and the control line are adjacent to a second side of the active area, and the first side is opposite to the first side of the active area.
9 . The electronic device according to claim 8 , wherein the driving chip is located between the first side of the active area and the circuit board.
10 . The electronic device according to claim 2 , wherein the panel further comprises a first common electrode and a second common electrode, the first common electrode is adjacent to the second common electrode, the first common electrode is coupled to one of the plurality of first common voltage lines through a plurality of first vias, and the second common electrode is coupled to one of the plurality of second common voltages through a plurality of second vias.
11 . The electronic device according to claim 2 , wherein the panel further comprises a plurality of second switch components, and the plurality of second switch components are coupled between the plurality of second common voltage lines and the second signal transmission line.
12 . The electronic device according to claim 2 , wherein the panel further comprises a plurality of connection pads disposed on the substrate, and the plurality of connection pads at least partially overlap the circuit board.
13 . The electronic device according to claim 12 , wherein the first signal transmission line, the control line and the second signal transmission line are coupled to the circuit board through the plurality of connection pads.
14 . The electronic device according to claim 2 , wherein a width of the second signal transmission line is the same as a width of the first signal transmission line.
15 . The electronic device according to claim 2 , wherein a width of a portion of the control line is greater than a width of the first signal transmission line and/or a width of the second signal transmission line.
16 . The electronic device according to claim 2 , wherein a width of a portion of the control line is equal to a width of a portion of the first signal transmission line.
17 . The electronic device according to claim 2 , wherein the control line comprises a plurality of first vias and a plurality of second vias.
18 . The electronic device according to claim 17 , wherein the plurality of second vias of the control line are located between the plurality of first switch components and the plurality of second switch components, and areas of the plurality of second vias are smaller than areas of the plurality of first vias.
19 . A detection method of an electronic device, comprising: providing a panel, wherein the panel comprises a first common voltage line, a second common voltage line, a control line, a first switch component, a second switch component, a first signal transmission line and a second signal transmission line; using the control line to provide a first voltage to the first switch component and the second switch component, so that the first common voltage line is coupled to the first signal transmission line, and the second common voltage line is coupled to the second signal transmission line; providing a first testing voltage to the first signal transmission line and providing a second testing voltage to the second signal transmission line, so that the panel displays a testing pattern; determining whether the testing pattern matches a predetermined pattern; when determining that the testing pattern matches the predetermined pattern, generating a detection normal message; and when determining that the testing pattern does not match the predetermined pattern, generating a detection error message.
20 . The detection method of the electronic device according to claim 12 , wherein the panel further comprises a first common electrode and a second common electrode, the first common electrode is adjacent to the second common electrode, the first common electrode is coupled to the first common voltage line through a plurality of first vias, and the second common electrode is coupled to the second common voltage through a plurality of second vias.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority of China Patent Application No. 202411557598.4, filed on Nov. 4, 2024, the entirety of which is incorporated by reference herein. BACKGROUND OF THE DISCLOSURE Field of the Disclosure The disclosure relates to an electronic device, and in particular, it relates to an electronic device and a detection method thereof. Description of the Related Art In a conventional sensing display device, there is a configuration of partitioned common electrodes. In display mode, the above partitioned common electrodes may take on the role of receiving and providing a common voltage. In sensing mode, the above partitioned common electrodes may serve as sensing electrodes for sensing capacitance differences. However, the partitioned common electrodes in the sensing display device may not be short-circuited with each other, otherwise the sensing function of the sensing display device may be affected. Therefore, a new design is needed to solve the problem described above. BRIEF SUMMARY OF THE DISCLOSURE An embodiment of the disclosure provides an electronic device having a display mode and a sensing mode. The electronic device includes a panel and a circuit panel. The panel includes a substrate, a first signal transmission line, a control line, a plurality of first common voltage lines, a plurality of first switch components and a driving chip. The substrate includes an active area and a peripheral area surrounding the active area. The first signal transmission line is disposed in the peripheral area. The control line is disposed in the peripheral area. The first common voltage lines are disposed in the active area. The first switch components are coupled between the first common voltage lines and the first signal transmission line. The driving chip is coupled to the first common voltage lines. The circuit panel is coupled to the control line. In the display mode, the circuit board provides a first voltage to the first switch components through the control line, so that the first common voltage lines are coupled to the first signal transmission line. In the sensing mode, the driving chip provides a sensing signal to the first common voltage lines, the circuit board provides a second voltage to the first switch components through the control line, so that the first common voltage lines are not coupled to the first signal transmission line. An embodiment of the disclosure provides a detection method of an electronic device, which includes the following steps. A panel is provided, wherein the panel includes a first common voltage line, a second common voltage line, a control line, a first switch component, a second switch component, a first signal transmission line and a second signal transmission line. The control line is used provide a first voltage to the first switch component and the second switch component, so that the first common voltage line is coupled to the first signal transmission line, and the second common voltage line is coupled to the second signal transmission line. A first testing voltage is provided to the first signal transmission line and a second testing voltage is provided to the second signal transmission line, so that the panel displays a testing pattern. It is determined whether the testing pattern matches a predetermined pattern. When determining that the testing pattern matches the predetermined pattern, a detection normal message is generated. When determining that the testing pattern does not match the predetermined pattern, a detection error message is generated. BRIEF DESCRIPTION OF THE DRAWINGS The disclosure can be fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein: FIG. 1 is a schematic view of an electronic device according to an embodiment of the disclosure; FIG. 2 is a schematic view of an electronic device according to another embodiment of the disclosure; FIG. 3 is a schematic view of an electronic device according to another embodiment of the disclosure; FIG. 4 is a schematic view of a structure of an electronic device according to an embodiment of the disclosure; FIG. 5 is a cross-sectional view of an active area of FIG. 4; FIG. 6 is a schematic view of a line layout of a first signal transmission line, a second signal transmission line, a control line and a circuit board according to an embodiment of the disclosure; FIG. 7 is a schematic view of a line layout of a first signal transmission line, a second signal transmission line, a control line, a plurality of first switch components, a plurality of second switch components and a circuit board according to an embodiment of the disclosure; and FIG. 8 is a flowchart of a detection method of an electronic device according to an embodiment of the disclosure. DETAILED DESCRIPTION OF THE DISCLOSURE In order to make objects, features and advantages of the disclosure more obvious and easily