Touch panel and image display device including the same
First Claim
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1. A touch driver circuit for driving a self capacitance type touch panel including a plurality of touch groups, each of the touch groups including a plurality of pattern electrodes, the touch driver circuit comprising:
- a plurality of touch ICs (integrated circuits) to control the plurality of touch groups of the self capacitance type touch panel, wherein;
selected ones of the touch ICs apply touch sensing voltages to respective corresponding touch groups at a same timing, the plurality of touch ICs that apply the sensing voltages to the respective corresponding touch groups at the same timing controlling the respective corresponding touch groups using the touch sensing voltages adjusted to have the same phase and stored in advance, andthe plurality of touch ICs determine presence of a touch input on the touch panel based on a change to the touch sensing voltages responsive to the touch input.
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Abstract
A self capacitance type touch panel includes a touch driver including a plurality of touch ICs; and a touch unit including a plurality of touch groups that are controlled by the plurality of touch ICs, respectively, wherein each of the plurality of touch groups includes a plurality of pattern electrodes, and some touch ICs selected from the plurality of touch ICs apply sensing voltages to respective corresponding touch groups at a same timing.
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Citations
8 Claims
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1. A touch driver circuit for driving a self capacitance type touch panel including a plurality of touch groups, each of the touch groups including a plurality of pattern electrodes, the touch driver circuit comprising:
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a plurality of touch ICs (integrated circuits) to control the plurality of touch groups of the self capacitance type touch panel, wherein; selected ones of the touch ICs apply touch sensing voltages to respective corresponding touch groups at a same timing, the plurality of touch ICs that apply the sensing voltages to the respective corresponding touch groups at the same timing controlling the respective corresponding touch groups using the touch sensing voltages adjusted to have the same phase and stored in advance, and the plurality of touch ICs determine presence of a touch input on the touch panel based on a change to the touch sensing voltages responsive to the touch input. - View Dependent Claims (2, 3, 4)
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5. A method of driving a self capacitance type touch panel including a plurality of touch groups, each of the touch groups including a plurality of pattern electrodes, the method comprising:
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applying touch sensing voltages to respective corresponding touch groups of the self capacitance type touch panel at a same timing using selected ones of a plurality of touch ICs to control the plurality of touch groups, the touch sensing voltages adjusted to have the same phase and stored in advance; and determining presence of a touch input on the touch panel based on a change to the touch sensing voltages responsive to the touch input. - View Dependent Claims (6, 7, 8)
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Specification