Granted Patent B2

US 12,355,260 · App. 18/105,602 · Granted Jul 8, 2025

Inventors: Wooyoung Oh (Suwon-si, KR); Heonseok Lee (Suwon-si, KR); Jungtae Kim (Suwon-si, KR); Sujin Yun (Suwon-si, KR)

Assignee: SAMSUNG ELECTRONICS CO., LTD.

H02J50/10G06F1/1643G06F1/1683G06F1/169G06F1/266G06F3/03545G06F3/0412H02J50/005

Abstract

Claims (49)

1. An electronic device capable of wireless charging for a pen-type input device, the electronic device comprising:

a display;

a touch panel coupled to the display and having a plurality of sides facing in different directions, the plurality of sides including a first side, a second side opposite to the first side, a third side perpendicular to the first side, and a fourth side opposite to the third side;

a first conductive trace disposed on the first side or the second side of the touch panel and connected to the first side or the second side of the touch panel to transfer a touch signal detected on the touch panel to a touch circuit;

a second conductive trace disposed on the third side or the fourth side of the touch panel and connected to the third side or the fourth side of the touch panel to transfer a touch signal detected on the touch panel to the touch circuit; and

a wireless charging pad configured to wirelessly transmit power to the pen-type input device and disposed at a position which is closer to the second side of the touch panel than to any one of the first side, the third side or the fourth side of the touch panel, to reduce interference of an operation of wireless charging for the pen-type input device,

wherein the first conductive trace comprises:

1-1th conductive traces disposed on the first side of the touch panel and extending along the first side of the touch panel in a downward direction substantially parallel to a longitudinal direction of the electronic device, and

1-2th conductive traces disposed on the second side of the touch panel, extending along the second side of the touch panel, and

wherein the 1-2th conductive traces extend in a direction away from the wireless charging pad and include a plurality of conductive traces,

wherein each of the plurality of conductive traces extends in parallel to the second side in the downward direction from locations of the touch panel spaced apart from the wireless charging pad, and

wherein an uppermost conductive trace among the plurality of conductive traces is spaced apart from the wireless charging pad by a predetermined distance, and each of conductive traces other than the uppermost conductive trace among the plurality of conductive traces is spaced apart from the wireless changing pad by a distance larger than the predetermined distance.

2. The electronic device of claim 1 , further comprising a touch circuit for processing the touch signal,

wherein the 1-1th conductive traces and the 1-2th conductive traces extend to the touch circuit while forming a single routing structure.

3. The electronic device of claim 1 , further comprising a housing including an internal space for receiving the pen-type input device.

4. The electronic device of claim 3 , wherein the wireless charging pad is disposed on the opposite side of the touch panel with respect to the pen-type input device.

5. The electronic device of claim 1 , further comprising a housing,

wherein the pen-type input device is attachable to an outer surface of the housing.

6. The electronic device of claim 5 , wherein the wireless charging pad is disposed adjacent to a side of the housing.

7. A method for avoiding charging noise of an electronic device capable of wireless charging for a pen-type input device, the method comprising:

determining whether the pen-type input device is inserted into or attached to the electronic device;

determining whether the pen-type input device is being wirelessly charged based on the pen-type input device being inserted into or attached to the electronic device;

setting a mode of a touch circuit of the electronic device to a pre-noise mode for reducing interference of an operation of wireless charging for the pen-type input device with an operation of a touch panel of the electronic device, based on the pen-type input device being inserted into or attached to the electronic device;

detecting a noise level of the touch panel of the electronic device while the mode of the touch circuit being set to the pre-noise mode; and

changing the mode of the touch circuit from the pre-noise mode to a noise mode based on the detected noise level being a predetermined value or more such that neither a sharp change in touch panel sensitivity nor a drastic change in operation frequency occurs,

wherein the setting of the mode of the touch circuit to the pre-noise mode comprises changing an operation frequency of the touch panel to a first frequency at which interference with a charging frequency of the wireless charging is smaller than a predetermined level, and

wherein the changing of the mode of the touch circuit from the pre-noise mode to the noise mode comprises changing the operation frequency of the touch panel from the first frequency to a second frequency at which the interference with the charging frequency of the wireless charging is smaller than the interference at the first frequency of the pre-noise mode.

8. The method of claim 7 , wherein the setting of the mode of the touch circuit to the pre-noise mode comprises increasing a sampling count for touch input on the touch panel.

9. The method of claim 7 , wherein the electronic device includes a wireless charging pad disposed adjacent to one side of the touch panel and a conductive trace disposed on another side opposite to the one side of the touch panel to transfer a touch signal detected on the touch panel to the touch circuit.

10. An electronic device comprising:

a processor; and

a memory storing instructions that, when executed by the processor, cause the electronic device to:

determine whether a pen-type input device is inserted into or attached to the electronic device,

determine whether the pen-type input device is being wirelessly charged based on the pen-type input device being inserted into or attached to the electronic device,

based on the pen-type input device being inserted into or attached to the electronic device, set a mode of a touch circuit of the electronic device to a pre-noise mode for reducing interference of an operation of wireless charging for the pen-type input device with an operation of a touch panel of the electronic device,

based on the mode of the touch circuit being set to the pre-noise mode, detect a noise level of the touch panel, and

change the mode of the touch circuit from the pre-noise mode to a noise mode based on the detected noise level being a predetermined value or more such that neither a sharp change in touch panel sensitivity nor a drastic change in operation frequency occurs, and

wherein the setting of the mode of the touch circuit to the pre-noise mode comprises changing an operation frequency of the touch panel to a first frequency at which interference with a charging frequency of the wireless charging is smaller than a predetermined level, and

wherein the changing of the mode of the touch circuit from the pre-noise mode to the noise mode comprises changing the operation frequency of the touch panel from the first frequency to a second frequency at which the interference with the charging frequency of the wireless charging is smaller than the interference at the first frequency of the pre-noise mode.

11. An electronic device capable of wireless charging for a pen-type input device, the electronic device comprising:

a display;

a touch panel coupled to the display and including a plurality of first patterns for generating a touch signal and a plurality of second patterns perpendicular to the plurality of first patterns and having a plurality of sides facing in different directions, the plurality of sides including a first side, a second side opposite to the first side, a third side perpendicular to the first side, and a fourth side opposite to the third side;

a conductive trace for transferring the touch signal to a touch circuit of the electronic device and including 1-1th conductive traces connected to one side of at least one of the plurality of first patterns, a 1-2th conductive traces connected to another side of at least one of the plurality of first patterns, a 2-1th conductive traces connected to one side of at least one of the plurality of second patterns, and a 2-2th conductive traces connected to another side of at least one of the plurality of second patterns; and

a wireless charging pad for wirelessly transmitting power to the pen-type input device and disposed at a position which is closer to the second side of the touch panel than to any one of the first side, the third side or the fourth side of the touch panel, to reduce interference of an operation of wireless charging for the pen-type input device,

wherein the 1-1th conductive traces are disposed on the first side of the touch panel and extend along the first side of the touch panel in a downward direction substantially parallel to a longitudinal direction of the electronic device,

wherein the 1-2th conductive traces are disposed on the second side of the touch panel and extend along the second side of the touch panel,

wherein the 1-2th conductive traces extend in a direction away from the wireless charging pad and include a plurality of conductive traces,

wherein each of the plurality of conductive traces extends in parallel to the second side in the downward direction from locations of the touch panel spaced apart from the wireless charging pad, and

wherein an uppermost conductive trace among the plurality of conductive traces is spaced apart from the wireless charging pad by a predetermined distance, and each of conductive traces other than the uppermost conductive trace among the plurality of conductive traces is spaced apart from the wireless changing pad by a distance larger than the predetermined distance.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (50)