Sensor-equipped display device and method of controlling the same
First Claim
1. A sensor-equipped display device comprising:
- a first substrate comprising a gate line extending in a first direction, a source line extending in a second direction intersecting the first direction, a switching element which is electrically connected to the gate line and the source line, and a pixel electrode which is electrically connected to the switching element;
a common electrode which is opposed to the pixel electrode and extending in the first direction; and
a detection electrode element which extends parallel to the common electrode, is formed of a metallic material, and is driven for sensing a state of closeness of a conductor brought externally,wherein;
common electrodes, each corresponding to the common electrode of the first substrate, are driven by a first driving circuit for each bundle (or group) of n electrodes (where n is a positive integer), and detection electrode elements, each corresponding to the detection electrode element of the first substrate, are paired with the common electrodes and are driven by a second driving circuit for each bundle (or group) of n elements (where n is a positive integer); and
when one bundle of the detection electrode elements is given a drive pulse from the second driving circuit, the first driving circuit allows a bundle of the common electrodes corresponding to the one bundle of the detection electrode elements being driven to be in a floating state, and fixes the remaining common electrodes at a predetermined direct-current voltage.
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Accused Products
Abstract
According to one embodiment, a first substrate includes a gate line extending in a first direction, a source line extending in a second direction intersecting the first direction, a switching element SW which is connected to the gate line and the source line, and a pixel electrode which is connected to the switching element SW. The first substrate includes a common electrode which is opposed to the pixel electrode, and a detection electrode element Tx necessary for sensing a state of closeness of a conductor brought externally, that extends parallel to the common electrode and is formed of a metallic material. By this structure, power consumption of a drive electrode of an input sensor can be reduced, and improvement of a drive frequency can be obtained.
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Citations
9 Claims
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1. A sensor-equipped display device comprising:
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a first substrate comprising a gate line extending in a first direction, a source line extending in a second direction intersecting the first direction, a switching element which is electrically connected to the gate line and the source line, and a pixel electrode which is electrically connected to the switching element; a common electrode which is opposed to the pixel electrode and extending in the first direction; and a detection electrode element which extends parallel to the common electrode, is formed of a metallic material, and is driven for sensing a state of closeness of a conductor brought externally, wherein; common electrodes, each corresponding to the common electrode of the first substrate, are driven by a first driving circuit for each bundle (or group) of n electrodes (where n is a positive integer), and detection electrode elements, each corresponding to the detection electrode element of the first substrate, are paired with the common electrodes and are driven by a second driving circuit for each bundle (or group) of n elements (where n is a positive integer); and when one bundle of the detection electrode elements is given a drive pulse from the second driving circuit, the first driving circuit allows a bundle of the common electrodes corresponding to the one bundle of the detection electrode elements being driven to be in a floating state, and fixes the remaining common electrodes at a predetermined direct-current voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling a display device comprising a first substrate and a second substrate,
the first substrate comprising: -
a gate line extending in a first direction, and a source line extending in a second direction intersecting the first direction; a switching element which is electrically connected to the gate line and the source line, and a pixel electrode which is electrically connected to the switching element; a common electrode which is opposed to the pixel electrode and extending in the first direction; and a detection electrode element which extends parallel to the common electrode, is formed of a metallic material, and is necessary for sensing a state of closeness of a conductor brought externally, the second substrate being opposed to the first substrate with a liquid crystal layer interposed between the first and second substrates, opposed to the gate line and the detection electrode element, and comprising a light-shielding film extending in the first direction, wherein; common electrodes, each corresponding to the common electrode of the first substrate, are driven by a first driving circuit for each bundle (or group) of n electrodes (where n is a positive integer), and detection electrode elements, each corresponding to the detection electrode element of the first substrate, are paired with the common electrodes and are driven by a second driving circuit for each bundle (or group) of n elements (where n is a positive integer); and when one bundle of the detection electrode elements is given a drive pulse from the second driving circuit, the first driving circuit allows a bundle of the common electrodes corresponding to the one bundle of the detection electrode elements being driven to be in a floating state, and fixes the remaining common electrodes at a predetermined direct-current voltage. - View Dependent Claims (9)
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Specification