Display device with capacitive touch sensor with slit formed in a surface of a detectng electrode opposed to a scanning electrode to realize detection with high accuracy
First Claim
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1. An information input device comprising:
- a touch panel having a touch sensor that detects a position at which a sensing object is in proximity to a sensing surface, the touch sensor including (i) a scanning electrode, (ii) a detecting electrode opposed to the scanning electrode, and (iii) a dielectric substance between the scanning electrode and the detecting electrode, the touch sensor being a capacitive sensor with an electrostatic capacitance that changes when the sensing object is in proximity to the detecting electrode; and
a plurality of slits formed within the detecting electrode, the slits including slits of uniform shape and size,wherein,the ends of the slits are closed by the detecting electrode,the detecting electrode has a substantially elongated rectangular shape with a length greater than a width and a constant width in a first direction orthogonal to a second direction along which the length of the detecting electrode extends,each slit extends most of the length of the detecting electrode, andthe scanning electrode has a substantially elongated shape with a length greater than a width.
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Abstract
An information input device including a touch panel configured to be provided with a touch sensor that detects a position at which a sensing object is brought close to a sensing surface. In this information input device, the touch sensor has a scanning electrode and a detecting electrode that is opposed to the scanning electrode with the intermediary of a dielectric substance, and is a capacitive sensor whose electrostatic capacitance changes if the sensing object is brought close to the detecting electrode. Furthermore, a slit is formed in a surface of the detecting electrode opposed to the scanning electrode.
43 Citations
13 Claims
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1. An information input device comprising:
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a touch panel having a touch sensor that detects a position at which a sensing object is in proximity to a sensing surface, the touch sensor including (i) a scanning electrode, (ii) a detecting electrode opposed to the scanning electrode, and (iii) a dielectric substance between the scanning electrode and the detecting electrode, the touch sensor being a capacitive sensor with an electrostatic capacitance that changes when the sensing object is in proximity to the detecting electrode; and a plurality of slits formed within the detecting electrode, the slits including slits of uniform shape and size, wherein, the ends of the slits are closed by the detecting electrode, the detecting electrode has a substantially elongated rectangular shape with a length greater than a width and a constant width in a first direction orthogonal to a second direction along which the length of the detecting electrode extends, each slit extends most of the length of the detecting electrode, and the scanning electrode has a substantially elongated shape with a length greater than a width. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A display device comprising:
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a display panel having a touch sensor that detects a position to which a sensing object is in proximity with respect to a display surface for displaying an image, the touch sensor including (i) a scanning electrode, (ii) a detecting electrode opposed to the scanning electrode, and (iii) a dielectric substance between the scanning electrode and the detecting electrode, the touch sensor being a capacitive sensor with an electrostatic capacitance that changes when the sensing object is in proximity to the detecting electrode; and a plurality of slits formed within the detecting electrode, the slits including slits of uniform shape and size, wherein, the ends of the slits are closed by the detecting electrode, the detecting electrode has a substantially elongated rectangular shape with a length greater than a width and a constant width in a first direction orthogonal to a second direction along which the length of the detecting electrode extends, each slit extends most of the length of the detecting electrode, and the scanning electrode has a substantially elongated shape with a length greater than a width. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A display device comprising:
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a display panel having a touch sensor that detects a position to which a sensing object is in proximity with respect to a display surface for displaying an image, the touch sensor including a detecting electrode opposed to the display surface, and the touch sensor being a capacitive sensor with an electrostatic capacitance that changes when the sensing object is in proximity to the detecting electrode; and a plurality of slits formed within the detecting electrode, wherein, the ends of the slits are closed by the detecting electrode, the detecting electrode has a substantially elongated shape with a length greater than a width and a constant width in a first direction orthogonal to a second direction along which the length of the detecting electrode extends, and each slit extends most of the length of the detecting electrode.
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Specification