INPUT DEVICE AND INPUT/OUTPUT DEVICE
First Claim
1. An input device comprising:
- m (m is an integer of 2 or more) row wirings;
n (n is an integer of 2 or more) column wirings;
a plurality of capacitors; and
a circuit,wherein;
each of the plurality of capacitors is between one of the row wirings and one of the column wirings,the circuit is configured to sense a potential of each of the column wirings or a current flowing to each of the column wirings,the circuit is configured to input an i-th (i is an integer greater than or equal to 1 and less than or equal to m−
1) signal to an i-th row wiring, and to input an i+1-th signal to an i+1-th row wiring,the i-th signal includes a period in which a first time at which the first potential changes into the second potential and a second time at which the second potential changes into the first potential are alternately repeated,the i+1-th signal includes a period in which a third time at which the third potential changes into the fourth potential and a fourth time at which the fourth potential changes into the third potential are alternately repeated, andthe third time is placed between the first time and the second time.
1 Assignment
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Accused Products
Abstract
An input device or an input/output device that is suitable for increasing in size is provided. An input device or an input/output device that can be driven at high frequencies is provided. An input device includes a plurality of row wirings and a plurality of column wirings. To each of the plurality of row wirings, periodic rectangular waves are applied. When attention is paid to one row wiring Xi (i is greater than or equal to 1 and less than or equal to m−1), a signal that has a phase opposite to that of a signal applied to the row wiring Xi and that is delayed for a given period is applied to a row wiring Xi+1, which is the row wiring next to the row wiring Xi. The width of each of the rectangular waves applied to the row wirings corresponds to a frame period.
59 Citations
15 Claims
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1. An input device comprising:
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m (m is an integer of 2 or more) row wirings; n (n is an integer of 2 or more) column wirings; a plurality of capacitors; and a circuit, wherein; each of the plurality of capacitors is between one of the row wirings and one of the column wirings, the circuit is configured to sense a potential of each of the column wirings or a current flowing to each of the column wirings, the circuit is configured to input an i-th (i is an integer greater than or equal to 1 and less than or equal to m−
1) signal to an i-th row wiring, and to input an i+1-th signal to an i+1-th row wiring,the i-th signal includes a period in which a first time at which the first potential changes into the second potential and a second time at which the second potential changes into the first potential are alternately repeated, the i+1-th signal includes a period in which a third time at which the third potential changes into the fourth potential and a fourth time at which the fourth potential changes into the third potential are alternately repeated, and the third time is placed between the first time and the second time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for driving an input device,
the input device comprising: -
m (m is an integer of 2 or more) row wirings; n (n is an integer of 2 or more) column wirings; a plurality of capacitors; and a circuit, the method comprising the steps of; inputting an i-th (i is an integer greater than or equal to 1 and less than or equal to m−
1) signal to an i-th row wiring, and an i+1-th signal to an i+1-th row wiring; andsensing a potential of each of the column wirings or a current flowing to each of the column wirings, wherein; each of the plurality of capacitors is between one of the row wirings and one of the column wirings, the i-th signal includes a period in which a first time at which the first potential changes into the second potential and a second time at which the second potential changes into the first potential are alternately repeated, the i+1-th signal includes a period in which a third time at which the third potential changes into the fourth potential and a fourth time at which the fourth potential changes into the third potential are alternately repeated, and the third time is placed between the first time and the second time. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification