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US 10,379,669 B2Granted
Apparatus for touch screen and electronic device comprising the same
AssigneeLG Display Co., Ltd.
InventorsJunSeok Oh, JongHee Hwang
Life of this patent
Estimating the term…
Abstract
Discussed is a touch screen apparatus according to an embodiment having a flat, curved or bending type display device, and an electronic device including the same. The touch screen apparatus includes a touch sensing circuit for outputting three-dimensional (3D) touch information by sensing a touch position through a first touch sensor and sensing a touch force through a second touch sensor.
Claims20
A touch screen apparatus comprising:
- a first touch panel having a first touch sensor whose capacitance is changed by a user touch input;
- a second touch panel having a second touch sensor whose resistance is changed by the user touch input;
- and
- a touch sensing circuit configured to generate and output three-dimensional (3D) touch information by sensing a touch position through the first touch sensor and sensing a touch force through the second touch sensor based on of a touch synchronization signal,
- wherein the first and second touch panels are separated from each other and disposed at different layers,
- wherein the touch synchronization signal has first and second periods,
- wherein the touch sensing circuit is further configured to:
- during the first period, generate touch raw data corresponding to the user touch input by sensing a change of capacitance in the first touch sensor, and
- during the second period, generate force raw data corresponding to the user touch input by sensing a change of resistance in the second touch sensor, calculate a touch position including coordinates of the user touch input based on the touch raw data, and generate and output the 3D touch information based on the touch position and the force raw data, and
- wherein the touch sensing circuit generates the force raw data by sensing the change of resistance in the second touch sensor and simultaneously calculates touch position data from the touch raw data.
7 more elements
A touch screen apparatus comprising:
- a first touch panel having a first touch sensor whose capacitance is changed by a user touch input;
- a second touch panel having a second touch sensor whose resistance is changed by the user touch input;
- and
- a touch sensing circuit configured to generate and output three-dimensional (3D) touch information by sensing a touch position through the first touch sensor and sensing a touch force through the second touch sensor on the basis of a touch synchronization signal,
- wherein the first and second touch panels are separated from each other and disposed at different layers,
- wherein the touch synchronization signal has first and second periods,
- wherein the first period of the touch synchronization signal includes at least one first sensing period and at least one second sensing period different from the at least one first sensing period, and
- wherein the touch sensing circuit is further configured to:
- during the at least one first sensing period in the first period, generate touch raw data corresponding to the user touch input by sensing a change of capacitance in the first touch sensor,
- during the at least one second sensing period in the first period, generate force raw data corresponding to the user touch input by sensing a change of resistance in the second touch sensor, and
- during the second period, generate and output the 3D touch information based on the touch position and the force raw data,
- wherein the touch sensing circuit generates the force raw data by sensing the change of resistance in the second touch sensor and simultaneously calculates touch position data from the touch raw data during the at least one second sensing period.
9 more elements
Dependencies are inferred from the claim text.