Semiconductor device

Patent metadata

Field	Value
Publication number	US-12314510-B2
Application number	US-202318115926-A
Country	US
Kind code	B2
Filing date	Mar 1, 2023
Priority date	Aug 24, 2022
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

A semiconductor device is disclosed. The semiconductor device includes a transceiver including an amplifier region configured to output a data signal to a source line connected to a pixel during a first period and receive a detection signal from a touch electrode during a second period different from the first period, and configured to generate the data signal based on input data; and a driving controller configured to generate the data based on input image data, outputting the data to the transceiver, and generate a touch signal based on the detection signal.

First claim

What is claimed is:

1. An electronic device, comprising:
a transceiver comprising a first amplifier region configured to:
output a first data signal based on first data, to a first source line connected to a pixel during a first period, and
operate as an integrator to receive a detection signal from a touch electrode during a second period different from the first period; and

a controller configured to:
generate the first data based on second data, which is image data,
output the first data to the transceiver, and

generate a touch signal based on the detection signal,
wherein the first source line and the touch electrode are selectively connected to the first amplifier region during the first period or the second period.

2. The electronic device of claim 1 , wherein:
the first amplifier region is further configured to:
amplify an input signal at a first node, the input signal generated based on the first data,
output the amplified input signal to the first source line as the first data signal through a second node during the first period, and
output the detection signal input from the touch electrode to the second node through a third node during the second period.

3. The electronic device of claim 2 , wherein:
the transceiver further comprises:
a digital-to-analog converter (DAC) configured to generate the input signal based on the first data; and
an analog-to-digital converter (ADC) configured to generate the touch signal based on the detection signal.

4. The electronic device of claim 3 , wherein:
the first amplifier region comprises:
a first amplifier comprising a first input terminal connected to a fourth node and a first output terminal connected to the second node;
a first switch connected between the fourth node and a fifth node;
a capacitor comprising a first electrode connected to the second node and a second electrode connected to the fifth node;
a second amplifier comprising a second input terminal connected to the first node, a third input terminal connected to the third node, and a second output terminal connected to the fourth node;
a second switch connected between the fifth node and the third node;
a third switch connected between the second node and the third node;
a fourth switch connected between a sixth node and the third node;
a fifth switch connected between the sixth node and the second node;
a sixth switch connected between the first node and a common voltage supply terminal;
a seventh switch connected between the first node and the DAC; and
an eighth switch connected between the second node and the ADC.

5. The electronic device of claim 4 , wherein:
the controller is further configured to control the transceiver during the first period to turn on the first switch, the third switch, the fifth switch, and the seventh switch and turn off the second switch, the fourth switch, the sixth switch, and the eighth switch during the first period.

6. The electronic device of claim 4 , wherein:
the controller is further configured to control the transceiver during the second period to turn on the second switch, the fourth switch, the sixth switch, and the eighth switch, and turn off the first switch, the third switch, the fifth switch, and the seventh switch.

7. The electronic device of claim 2 , wherein:
the transceiver further comprises a multiplexer configured to electrically connect the first source line and the second node or electrically connect the touch electrode and the third node based on a voltage level of an input selection signal.

8. The electronic device of claim 7 , wherein:
the multiplexer is further configured to electrically connect the first source line and the second node during the first period, and electrically connect the touch electrode and the third node during the second period.

9. The electronic device of claim 1 , wherein:
the transceiver further comprises a second amplifier region configured to:
output a second data signal to a second source line connected to a second pixel during the first period, and
receive the detection signal from the touch electrode during the second period.

10. The electronic device of claim 9 , wherein:
the transceiver further comprises:
a first multiplexer configured to electrically connect the first source line and the first amplifier region or electrically connect the touch electrode and the first amplifier region based on a voltage level of an input selection signal; and
a second multiplexer configured to electrically connect the second source line and the second amplifier region or electrically connect the touch electrode and the second amplifier region based on the voltage level of the input selection signal.

11. An electronic device comprising:
a panel comprising:
a pixel connected to a gate line and a source line,
a first touch electrode extending in a first direction, and a second touch electrode extending in a second direction intersecting the first direction; and
a driving circuit comprising an amplifier region configured to:
transmit a data signal to the panel during a first period, and
operate as an integrator to receive a detection signal from the panel during a second period different from the first period,
wherein the source line and the first touch electrode are selectively connected to the amplifier region during the first period or the second period.

12. The electronic device of claim 11 , wherein:
the panel comprises:
a first panel on which the gate line, the source line, and the pixel are provided, and
a second panel positioned on the first panel and on which the first touch electrode and the second touch electrode are provided.

13. The electronic device of claim 12 , wherein:
the driving circuit further comprises a multiplexer configured to electrically connect the source line and the amplifier region or electrically connect the first touch electrode and the amplifier region based on a voltage level of an input selection signal.

14. The electronic device of claim 11 , wherein:
the panel further comprises a shift register configured to output a gate signal to the gate line and a driving signal to the second touch electrode.

15. The electronic device of claim 11 , wherein:
the gate line, the source line, the pixel, and the second touch electrode are provided on the panel, and
the second touch electrode comprises the gate line.

16. The electronic device of claim 15 , wherein:
the panel further comprises a multiplexer configured to electrically connect the source line and the amplifier region or electrically connect the first touch electrode and the amplifier region based on a voltage level of an input selection signal.

17. The electronic device of claim 11 , wherein:
the gate line, the source line, and the pixel are provided on the panel, the first touch electrode comprises the source line, and
the second touch electrode comprises the gate line.

18. The electronic device of claim 11 , wherein:
the pixel is configured to display an image in units of one frame, and
the second period is a time period within a vertical blank period of one frame.

19. The electronic device of claim 11 , wherein:
the pixel is configured to display an image in units of one frame, and
the one frame comprises a plurality of horizontal periods, and
each of the plurality of horizontal periods comprises the first period and the second period.

20. An electronic system comprising:
a host configured to provide an image signal;
a touch-display panel c

Assignees

• Samsung Electronics Co Ltd

Inventors

• Min Kyungjik
• Kim Minsung
• Kim Junesoo
• Park Sung-Jin
• Baek Seung-Hoon
• Lee Kyeonggon
• Lee Choonghoon

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/044

  by capacitive means · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• G09G3/36

  using liquid crystals · CPC title