Stylus pen, antenna module, touch sensor, and electronic device

Patent metadata

Field	Value
Publication number	US-11983364-B2
Application number	US-202117763385-A
Country	US
Kind code	B2
Filing date	Jan 21, 2021
Priority date	Jan 22, 2020
Publication date	May 14, 2024
Grant date	May 14, 2024

Abstract

An embodiment of the present invention provides a display device including: a loop coil; a display unit configured to include a plurality of pixels; a display driver configured to apply a data signal and a scan signal to the pixels depending on a vertical synchronization signal and a horizontal synchronization signal; a plurality of touch electrodes positioned on the display unit; a driving receiver configured to apply a driving signal to the loop coil during a first period and to receive a sensing signal from at least one of the touch electrodes during a second period after the first period; and a controller configured to generate touch information by using the sensing signal, wherein the driving signal is synchronized to at least one pulse of the vertical synchronization signal and the horizontal synchronization signal.

First claim

The invention claimed is:

1. An electronic device comprising:
a loop coil;
a display unit configured to include a plurality of pixels;
a display driver configured to apply a data signal and a scan signal to the pixels based on a vertical synchronization signal and a horizontal synchronization signal;
a plurality of touch electrodes positioned on the display unit;
a driving receiver configured to apply a driving signal to the loop coil during a first period and to receive a sensing signal from at least one of the touch electrodes during a second period after the first period; and
a controller configured to generate touch information by using the sensing signal received during a sensing period and determine a period excluding a period during which a scan signal applied to one pixel among the pixels is at an enable level as the sensing period,
wherein the driving signal is synchronized to at least one pulse of the vertical synchronization signal and the horizontal synchronization signal.

2. The electronic device of claim 1 , wherein
the driving receiver is synchronized with a pulse of the horizontal synchronization signal to receive the sensing signal.

3. An electronic device comprising:
a loop coil;
a display unit configured to include a plurality of pixels;
a display driver configured to apply a data signal and a scan signal to the pixels based on a vertical synchronization signal and a horizontal synchronization signal;
a plurality of touch electrodes positioned on the display unit;
a driving receiver configured to apply a driving signal to the loop coil during a first period and to receive a sensing signal from at least one of the touch electrodes during a second period after the first period; and
a controller configured to generate touch information by using some sensing signals received during a sensing period determined in response to the horizontal synchronization signal among the sensing signals and determine a period excluding a period from a time when the pulse of the horizontal synchronization signal is generated to a predetermined second time from a time when the pulse of the horizontal synchronization signal is generated to a predetermined first time as the sensing period, and the predetermined second time exceeds the predetermined first time,
wherein the driving signal is synchronized to at least one pulse of the vertical synchronization signal and the horizontal synchronization signal.

4. An electronic device comprising:
a loop coil;
a display unit configured to include a plurality of pixels;
a display driver configured to apply a data signal and a scan signal to the pixels based on a vertical synchronization signal and a horizontal synchronization signal;
a plurality of touch electrodes positioned on the display unit;
a driving receiver configured to apply a driving signal to the loop coil during a first period and to receive a sensing signal from at least one of the touch electrodes during a second period after the first period; and
a controller configured to generate touch information by using the sensing signal received during a sensing period and determine a period excluding a period during which a data signal is applied to one pixel among the pixels as the sensing period,
wherein the driving signal is synchronized to at least one pulse of the vertical synchronization signal and the horizontal synchronization signal.

5. An electronic device comprising:
a loop coil;
a display unit configured to include a plurality of pixels;
a display driver configured to apply a data signal and a scan signal to the pixels based on a vertical synchronization signal and a horizontal synchronization signal;
a plurality of touch electrodes positioned on the display unit;
a driving receiver configured to apply a driving signal to the loop coil during a first period and to receive sensing signals at two times having opposite phases within one cycle of a frequency of the driving signal from at least one of the touch electrodes during a second period after the first period and apply an emission control signal for controlling the pixels to emit light; and
a controller configured to generate touch information based on the sensing signals,
wherein the driving signal is synchronized to at least one pulse of the vertical synchronization signal and the horizontal synchronization signal, and
wherein the two times are within a period excluding a time at which the emission control signal applied to one of the pixels is transitioned to an enable level.

6. The electronic device of claim 5 , wherein
the controller is further configured to generates the touch information by using a difference value between the sensing signals received at the two times.

7. The electronic device of claim 1 , wherein
a frequency of the driving signal is an integer multiple of 2 or more of a frequency of the horizontal synchronization signal.

8. A touch device on a display that displays an image of one frame by applying a scan signal and a data signal to a plurality of pixels based on a vertical synchronization signal and a horizontal synchronization signal, the touch device comprising:
a touch sensor unit configured to include a plurality of electrodes;
a driver/receiver configured to apply a driving signal to at least one of the electrodes during a first period and to receive a sensing signal having a predetermined phase difference from the driving signal from at least one of the electrodes during a second period after the first period; and
a controller configured to generate touch information by using the sensing signal and determine a period excluding a period during which a scan signal applied to one pixel among the pixels is at an enable level as a sensing period,
wherein the driving signal is synchronized to at least one pulse of the vertical synchronization signal and the horizontal synchronization signal.

9. The touch device of claim 8 , wherein
the driving receiver is synchronized with a pulse of the horizontal synchronization signal to receive the sensing signal.

10. The touch device of claim 9 , wherein
the controller generates the touch information by using some sensing signals received during a sensing period determined in response to the horizontal synchronization signal among the sensing signals.

11. A touch device on a display that displays an image of one frame by applying a scan signal and a data signal to a plurality of pixels based on a vertical synchronization signal and a horizontal synchronization signal, the touch device comprising:
a touch sensor unit configured to include a plurality of electrodes;
a driver/receiver configured to apply a driving signal to at least one of the electrodes during a first period and to receive a sensing signal having a predetermined phase difference from the driving signal from at least one of the electrodes during a second period after the first period; and
a controller configured to generate touch information by using the sensing signal and determine a period excluding a period from a time when the pulse of the horizontal synchronization signal is generated to a predetermined second time from a time when the pulse of the horizontal synchronization signal is generated to a predetermined first time as the sensing period, and the predetermined second time exceeds the predetermined first time.

12. A touch device on a display that displays an image of one frame by applying a scan signal and a data signal to a plurality of pixels based on a vertical synchronization signal and a horizontal synchronization signal, the touch device comprising:
a touch sensor unit configured to include a plurality of electrodes;

Assignees

• Hideep Inc

Inventors

• Kim Seyeob
• Kim Bonkee
• Cho Youngho
• Woo Hyoungwook
• Jung Kiryoung
• Lee Hwanhee
• Lee Wonwoo
• Park Kyeonghan
• Lee Sein
• Seo Jeongwon
• Kim Jongsik
• Jeong Inuk
• Moon Hojun
• Ko Beomkyu

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/04184 Primary

  Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally · CPC title

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G06F3/0383

  Signal control means within the pointing device · CPC title

• G06F3/04162

  for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware · CPC title