Touch Sensing Device
AssigneeMStar Semiconductor, Inc.
InventorsKai-Ting Ho, Hsuan-I Pan, Guo-Kiang Hung
Life of this patent
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Abstract
A touch sensing device is provided. A shielding plate is provided for covering and shielding wires that route sensing electrodes to a flexible circuit board. Alternatively, a conductive layer of the circuit board is applied for shielding a plurality of contacts of the electrodes and wires. Wires that couple two same typed electrodes extend as a shielding plate for shielding contacts of another type of electrodes. An auxiliary electrode bordering outside the sensing electrodes can be provided to compensate fringe effects of the sensing electrodes.
Claims20
A touch sensing device, comprising:
- a plurality of electrodes, disposed on a plane and partially in a sensing area on the plane;
- a plurality of wires, respectively coupled to the electrodes, extending to outside the sensing area;
- and
- a conductive shielding plate, electrically insulated from the wires, covering a portion of the wires outside the sensing area.
A touch sensing device, comprising:
- a plurality of first electrodes, disposed on a plane and partially in a sensing area on the plane;
- a plurality of second electrodes, disposed on the plane and partially in a sensing area, and electrically insulated from the first electrodes;
- a plurality of first wires, each first wire coupled to at least two of the first electrodes;
- and
- a plurality of second wires, each second wire coupled to at least two of the second electrodes;
- wherein the second wires, the first electrodes and the second electrodes are disposed on a same conductive layer.
A touch sensing device, comprising:
- a plurality of sensing electrodes, disposed on a plane and partially in a sensing area on the plane;
- and
- an auxiliary electrode, disposed outside the sensing area, electrically insulated from the sensing electrodes and disposed on a same conductive layer with the sensing electrodes,
- wherein the sensing electrodes are arranged with a predetermined distance between one another along a predetermined direction, and wherein a spacing distance between the sensing electrodes and the auxiliary electrode along the predetermined direction equals the predetermined distance.
Dependencies are inferred from the claim text.