Touch apparatus, drive circuit, drive method, and electronic device
First Claim
1. A drive method for a touch apparatus to realize pressure sensing, wherein,the touch apparatus comprises:
- a detection conductor and a plurality of detection electrodes arranged in an array, the plurality of detection electrodes and the detection conductor are arranged opposite each other to form a capacitor structure for sensing a touch and a pressure;
a stage in which the plurality of detection electrodes and the detection conductor perform pressure sensing is defined as a pressure sensing stage, and a stage in which the plurality of detection electrodes and the detection conductor perform touch sensing is defined as a touch sensing stage; and
the detection conductor is in a suspended state during the pressure sensing stage;
the drive method comprises;
in the pressure sensing stage,providing a first pressure sensing signal to a part of the plurality of detection electrodes, and providing a second pressure sensing signal to the remaining part of the plurality of detection electrodes, wherein, the first pressure sensing signal is different from the second pressure sensing signal, detection electrodes receiving the first pressure sensing signal are first pressure electrodes, detection electrodes receiving the second pressure sensing signal are second pressure electrodes, the first pressure electrodes and the detection conductor are configured to form a first capacitor structure, the second pressure electrodes and the detection conductor are configured to form a second capacitor structure, and the first capacitor structure and the second capacitor structure are connected with each other in series;
obtaining a capacitance between the first pressure electrodes and the second pressure electrodes, comparing the capacitance between the first pressure electrodes and the second pressure electrodes with a preset first capacitance, and obtaining a capacitance change value between the first pressure electrodes and the second pressure electrodes as a pressure capacitance change value; and
obtaining a pressure signal based on the pressure capacitance change value, to realize pressure sensing; and
in the touch sensing stage,providing a first touch sensing signal to a part of the plurality of detection electrodes, and providing a second touch sensing signal to the remaining part of the plurality of detection electrodes, wherein, detection electrodes receiving the first touch sensing signal are first touch electrodes, and detection electrodes receiving the second touch sensing signal are second touch electrodes; and
performing a self-capacitance detection on the first touch electrodes or the second touch electrodes, or performing a mutual capacitance detection on the first touch electrodes and the second touch electrodes, to realize touch sensing.
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Abstract
The application provides a touch apparatus, a drive circuit, a drive method and an electronic device. The drive method includes: in a pressure detection stage, providing a first pressure sensing signal to a part of detection electrode, and providing a second pressure sensing signal to the remaining detection electrodes. The first pressure sensing signal is not equal to the second pressure sensing signal. Through detecting a capacitance change between first pressure electrodes and second pressure electrodes, distance changes between a detection conductor and the first pressure electrodes and between the detection conductor and the second pressure electrodes are detected, to realize pressure sensing.
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Citations
20 Claims
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1. A drive method for a touch apparatus to realize pressure sensing, wherein,
the touch apparatus comprises: - a detection conductor and a plurality of detection electrodes arranged in an array, the plurality of detection electrodes and the detection conductor are arranged opposite each other to form a capacitor structure for sensing a touch and a pressure;
a stage in which the plurality of detection electrodes and the detection conductor perform pressure sensing is defined as a pressure sensing stage, and a stage in which the plurality of detection electrodes and the detection conductor perform touch sensing is defined as a touch sensing stage; and
the detection conductor is in a suspended state during the pressure sensing stage;the drive method comprises; in the pressure sensing stage, providing a first pressure sensing signal to a part of the plurality of detection electrodes, and providing a second pressure sensing signal to the remaining part of the plurality of detection electrodes, wherein, the first pressure sensing signal is different from the second pressure sensing signal, detection electrodes receiving the first pressure sensing signal are first pressure electrodes, detection electrodes receiving the second pressure sensing signal are second pressure electrodes, the first pressure electrodes and the detection conductor are configured to form a first capacitor structure, the second pressure electrodes and the detection conductor are configured to form a second capacitor structure, and the first capacitor structure and the second capacitor structure are connected with each other in series; obtaining a capacitance between the first pressure electrodes and the second pressure electrodes, comparing the capacitance between the first pressure electrodes and the second pressure electrodes with a preset first capacitance, and obtaining a capacitance change value between the first pressure electrodes and the second pressure electrodes as a pressure capacitance change value; and obtaining a pressure signal based on the pressure capacitance change value, to realize pressure sensing; and in the touch sensing stage, providing a first touch sensing signal to a part of the plurality of detection electrodes, and providing a second touch sensing signal to the remaining part of the plurality of detection electrodes, wherein, detection electrodes receiving the first touch sensing signal are first touch electrodes, and detection electrodes receiving the second touch sensing signal are second touch electrodes; and performing a self-capacitance detection on the first touch electrodes or the second touch electrodes, or performing a mutual capacitance detection on the first touch electrodes and the second touch electrodes, to realize touch sensing. - View Dependent Claims (2, 3, 4, 5, 6)
- a detection conductor and a plurality of detection electrodes arranged in an array, the plurality of detection electrodes and the detection conductor are arranged opposite each other to form a capacitor structure for sensing a touch and a pressure;
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7. A drive circuit for a touch apparatus to realize pressure sensing, wherein,
the touch apparatus comprises: - a detection conductor and a plurality of detection electrodes arranged in an array, the plurality of detection electrodes and the detection conductor are arranged opposite each other to form a capacitor structure for sensing a touch and a pressure, a stage in which the plurality of detection electrodes and the detection conductor perform pressure sensing is defined as a pressure sensing stage, a stage in which the plurality of detection electrodes and the detection conductor perform touch sensing is defined as a touch sensing stage, and the detection conductor is in a suspended state during the pressure sensing stage; and
the drive circuit comprises; a pressure sensing module, configured to provide a first pressure sensing signal to a part of the plurality of detection electrodes, and provide a second pressure sensing signal to the remaining part of the plurality of detection electrodes, wherein, the first pressure sensing signal is different from the second pressure sensing signal, detection electrodes receiving the first pressure sensing signal are first pressure electrodes, detection electrodes receiving the second pressure sensing signal are second pressure electrodes, the first pressure electrodes and the detection conductor are configured to form a first capacitor structure, the second pressure electrodes and the detection conductor are configured to form a second capacitor structure, and the first capacitor structure and the second capacitor structure are connected with each other in series;
further configured to obtain a capacitance between the first pressure electrodes and the second pressure electrodes, compare the capacitance between the first pressure electrodes and the second pressure electrodes with a preset first capacitance, and obtain a capacitance change value between the first pressure electrodes and the second pressure electrodes as a pressure capacitance change value; and
further configured to obtain a pressure signal based on the pressure capacitance change value, to realize pressure sensing;a touch sensing module, configured to provide a first touch sensing signal to a part of the plurality of detection electrodes, and provide a second touch sensing signal to the remaining part of the plurality of detection electrodes, wherein, detection electrodes receiving the first touch sensing signal are first touch electrodes, and detection electrodes receiving the second touch sensing signal are second touch electrodes; and
further configured to perform a self-capacitance detection on the first touch electrodes or the second touch electrodes, or perform a mutual capacitance detection on the first touch electrodes and the second touch electrodes, to realize touch sensing; anda control module, configured to in the pressure sensing stage, control the pressure sensing module to;
provide the first pressure sensing signal to the first pressure electrodes, provide the second pressure sensing signal to the second pressure electrodes, obtain the capacitance between the first pressure electrodes and the second pressure electrodes and the pressure capacitance change value, obtain the pressure signal based on the pressure capacitance change value, and realize pressure sensing based on the pressure signal; and
configured to in the touch sensing stage, control the touch sensing module to;
provide the first touch sensing signal to the first touch electrodes, provide the second touch sensing signal to the second touch electrodes, and perform a self-capacitance detection on the first touch electrodes or the second touch electrodes, or perform a mutual capacitance detection on the first touch electrodes and the second touch electrodes, to realize touch sensing. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- a detection conductor and a plurality of detection electrodes arranged in an array, the plurality of detection electrodes and the detection conductor are arranged opposite each other to form a capacitor structure for sensing a touch and a pressure, a stage in which the plurality of detection electrodes and the detection conductor perform pressure sensing is defined as a pressure sensing stage, a stage in which the plurality of detection electrodes and the detection conductor perform touch sensing is defined as a touch sensing stage, and the detection conductor is in a suspended state during the pressure sensing stage; and
Specification