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US 8,134,541 B2Granted
Capacitive touch panel
AssigneeNational Chiao Tung University
InventorsJian-Ting Chen, Paul C.-P. Chao, Jyun-Yao Ruan
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Abstract
A capacitive touch panel with particular conductive pattern design reduces the mutual interference between the upper and lower electrode and perform three-dimensional capacitance detection and double-faced detection, and may be applied in large dimension touch panel with high sensitivity.
Claims14
A capacitive touch panel, comprising:
- an insulating layer;
- a plurality of first dimensional conductive patterns configured over an upper surface of the insulating layer, wherein each of the first dimensional conductive patterns comprises a first axis and a plurality of first conductive patterns configured to the first axis, and each of the first conductive patterns comprises:
- a pair of first inner protrusions extending bilaterally from the first axis;
- and
- a pair of first outer protrusions extending from extremities of the first inner protrusions at a predetermined angle;
- and
- a plurality of second dimensional conductive patterns configured on a lower surface of the insulating layer, wherein each of the second dimensional conductive patterns comprises a second axis rotated 90 degrees from first axis and a plurality of second conductive patterns configured to the second axis, and each of the second conductive patterns comprises:
- a pair of second inner protrusions extending bilaterally from the second axis;
- and
- a pair of second outer protrusions extending from extremities of the second inner protrusions at a predetermined angle, wherein each of the second conductive patterns is respectively configured at positions corresponding to the first conductive patterns over the lower surface of the insulating layer, wherein a first dimensional capacitance is formed by any two adjacent first dimensional conductive patterns on the insulating layer as a first driving electrode and a first sensing electrode;
- a second dimensional capacitance is formed by any two adjacent second dimensional conductive patterns on the insulating layer as a second driving electrode and a second sensing electrode;
- and
- a third dimensional capacitance is formed by one of the first dimensional conductive patterns and second dimensional conductive patterns as a third driving electrode and a third sensing electrode.
10 more elements
Dependencies are inferred from the claim text.