Coordinate detecting device
First Claim
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1. A coordinate detecting device, comprising:
- a resistance film;
a common electrode which applies electric potential to the resistance film;
a voltage supplying section which supplies a voltage to the common electrode;
wiring which supplies the voltage to the voltage supplying section;
an insulation film disposed between the common electrode and the resistance film; and
an electric potential supplying section formed in the insulation film for supplying the electric potential from the common electrode to the resistance film, whereinopenings, which become the electric potential supplying section, are formed at outer side parts of the insulation film,a first distance between the openings at ends of the outer side parts being smaller than a second distance between the openings at a center of the outer side parts, andthe coordinate detecting device detects a coordinate of a position on a panel when a user touches the position while an electric potential distribution is generated in the resistance film by being applied electric potential from the common electrode,wherein the openings are aligned along the outer side parts corresponding to each side of the panel.
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Abstract
A coordinate detecting device is disclosed. The coordinate detecting device includes a resistance film, a common electrode which applies electric potential to the resistance film, a voltage supplying section which supplies a voltage to the common electrode, wiring which supplies the voltage to the voltage supplying section, an insulation film disposed between the common electrode and the resistance film, and an electric potential supplying section formed in the insulation film for supplying the electric potential from the common electrode to the resistance film. The coordinate detecting device detects a coordinate of a position on a panel when a user touches the position while an electric potential distribution is generated in the resistance film by being applied electric potential from the common electrode.
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Citations
16 Claims
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1. A coordinate detecting device, comprising:
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a resistance film; a common electrode which applies electric potential to the resistance film; a voltage supplying section which supplies a voltage to the common electrode; wiring which supplies the voltage to the voltage supplying section; an insulation film disposed between the common electrode and the resistance film; and an electric potential supplying section formed in the insulation film for supplying the electric potential from the common electrode to the resistance film, wherein openings, which become the electric potential supplying section, are formed at outer side parts of the insulation film, a first distance between the openings at ends of the outer side parts being smaller than a second distance between the openings at a center of the outer side parts, and the coordinate detecting device detects a coordinate of a position on a panel when a user touches the position while an electric potential distribution is generated in the resistance film by being applied electric potential from the common electrode, wherein the openings are aligned along the outer side parts corresponding to each side of the panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A coordinate detecting device, comprising:
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a resistance film; a common electrode which applies electric potential to the resistance film; a voltage supplying section which supplies a voltage to the common electrode; wiring which supplies the voltage to the voltage supplying section; an insulation film disposed between the wiring and the common electrode; and an electrical potential supplying section formed in the insulation film for supplying the electrical potential from the common electrode to the resistance film, wherein openings, which becomes the electric potential supplying section, are formed at outer side parts of the insulation film, a first distance between the openings at ends of the outer side parts being smaller than a second distance between the openings at a center of the outer side parts, and the voltage supplying section is formed in a through hole formed in the insulation film, and the wiring is stacked on the common electrode via the insulation film, and the coordinate detecting device detects a coordinate of a position on a panel when a user touches the position while an electric potential distribution is generated in the resistance film by being applied electric potential from the common electrode, wherein the openings are aligned along the outer side parts corresponding to each side of the panel.
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16. A coordinate detecting device, comprising:
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an electric potential supplying layer for supplying electric potential from a common electrode to a resistance film of the coordinate detecting device;
whereinthe electric potential supplying layer includes an insulation film and an electric potential supplying section in the insulation film; the electric potential supplying section is formed at openings formed at outer side parts of the insulation film; and a first distance between the openings at ends of the outer side parts being smaller than a second distance between the openings at a center of the outer side parts, wherein the openings are aligned along the outer side parts corresponding to each side of the panel.
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Specification
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Current AssigneeFujitsu Component Limited (Fujitsu Limited)
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Original AssigneeFujitsu Component Limited (Fujitsu Limited)
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InventorsNakajima, Takashi, Kondoh, Koichi
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Primary Examiner(s)Eisen; Alexander
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Assistant Examiner(s)Mishler; Robin
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Application NumberUS11/442,223Publication NumberTime in Patent Office1,617 DaysField of SearchNoneUS Class Current345/173CPC Class CodesG06F 2203/04113 Peripheral electrode patter...G06F 3/045 using resistive elements, e...
