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US 12,761,747 B2Granted
Touch driving circuit and display apparatus including the same
AssigneeLG Display Co., Ltd.
InventorsJunSeok Oh, Seunghyeon Kim, SunBok Song
Life of this patent
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Abstract
A touch driving circuit includes a touch sensing part configured to sense a touch, and a force sensing part configured to sense a force. Force sensing driving of the force sensing part is controlled based on a touch sensing signal of the touch sensing part.
Claims32
A touch driving circuit, comprising:
- a touch sensing part configured to sense a touch;
- a force sensing part configured to sense a force;
- a piezoelectric member including a piezoelectric material;
- a vibration driver configured to generate a vibration driving signal, based on at least one of the touch sensing signal and the force sensing signal, and provide the vibration driving signal to the piezoelectric member;
- a switching circuit part between the piezoelectric member and each of the force sensing part and the vibration driver;
- and
- a controller configured to control the switching circuit part to drive the force sensing part and the vibration driver,
- wherein force sensing driving of the force sensing part is controlled based on a touch sensing signal of the touch sensing part,
- wherein the force sensing part is configured to sense a force sensing signal based on a strain of the piezoelectric member,
- wherein the force sensing part is driven in a first force sensing mode or a second force sensing mode, based on the touch sensing signal, and
- wherein the vibration driver is driven in a first vibration standby mode or a second vibration standby mode, based on the touch sensing signal.
8 more elements
A display apparatus, comprising:
- a display member configured to display an image;
- and
- a touch driver connected with the display member,
- wherein the touch driver comprises a touch driving circuit,
- wherein the touch driving circuit comprises:
- a touch sensing part configured to sense a touch;
- a force sensing part configured to sense a force;
- a piezoelectric member including a piezoelectric material;
- a vibration driver configured to generate a vibration driving signal, based on at least one of the touch sensing signal and the force sensing signal, and provide the vibration driving signal to the piezoelectric member;
- a switching circuit part between the piezoelectric member and each of the force sensing part and the vibration driver;
- and
- a controller configured to control the touch sensing part and the force sensing part,
- wherein force sensing driving of the force sensing part is controlled based on a touch sensing signal of the touch sensing part,
- wherein the controller is configured to control the switching circuit part to drive the force sensing part and the vibration driver,
- wherein the force sensing part is configured to sense a force sensing signal based on a strain of the piezoelectric member,
- wherein the force sensing part is driven in a first force sensing mode or a second force sensing mode, based on the touch sensing signal, and
- wherein the vibration driver is driven in a first vibration standby mode or a second vibration standby mode, based on the touch sensing signal.
14 more elements
Dependencies are inferred from the claim text.