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US 9,426,893 B2Granted
Curved capacitive touch panel and manufacture method thereof
AssigneeTPK Touch Solutions Inc.
InventorsJun-Yao Huang, Po-Pin Hung
Life of this patent
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Abstract
A manufacture method and structure of a curved capacitive touch panel is disclosed. A flat flexible printed circuit board (FPCB) with capacitive touch sensing/detecting capability is provided, followed by subjecting the flat FPCB to compressing molding to form a curved FPCB. Subsequently, a curved substrate is provided, wherein an outer curved surface of the curved FPCB is bonded to an inner curved surface of the substrate, thereby forming the curved capacitive touch panel.
Claims18
A method of forming a curved capacitive touch panel, comprising:
- providing a curved glass substrate;
- providing a flat flexible printed circuit board (FPCB) with at least one of capacitive touch sensing and detecting capability;
- bending the flat FPCB along at least an axial direction to form at least a two-dimensional curved FPCB;
- wherein the at least two-dimensional curved FPCB respectively comprise curved sidewalls;
- upon formation of the curved FPCB, aligning the curved FPCB to the curved glass substrate;
- and
- bonding an outer curved surface of the curved FPCB to an inner curved surface of the curved glass substrate, thereby forming the curved capacitive touch panel having a display area and at least one touch-sensing area, wherein the display area and the touch-sensing area are separately distributed on the area of the curved glass substrate, and
- at least another touch-sensing area distributed on the curved sidewalls;
- wherein the curved capacitive touch panel performs as an outer case for containing an electronic device, and a display panel of the electronic device is aligned to the display area, wherein the touch position is detected when a touch on the touch-sensing area results in capacitance effect.
6 more elements
A curved capacitive touch panel, comprising:
- a three-dimensional curved flexible printed circuit board (FPCB) with at least one of capacitive touch sensing and detecting capability, wherein a first curved sidewall and a first curved endwall are respectively formed by compression molding along at least two axial directions;
- and
- a touchable three-dimensional curved glass substrate comprising a second curved sidewall bonded with the first curved sidewall, and a second curved endwall bonded with the first curved endwall,
- wherein the curved capacitive touch panel has a display area and at least one touch-sensing area, wherein the display area and the touch-sensing area are separately distributed on the area of the curved glass substrate, and
- at least another touch-sensing area distributed on the first curved sidewall, second curved sidewall, the first curved endwall or the second curved endwall;
- and
- wherein the curved capacitive touch panel performs as an outer case for containing an electronic device, and a display panel of the electronic device is aligned to the display area, wherein the touch position is detected when a touch on the touch panel touch-sensing area results in capacitance effect.
4 more elements
Dependencies are inferred from the claim text.