Thin film sensor, capacitive touch panel having the same and preparation method thereof and terminal product
First Claim
1. A preparation method for a capacitive touch panel, the capacitive touch panel comprising:
- a cover lens provided with a window frame on a surface thereof;
the window frame being fabricated on a surface of the cover lens by screen printing;
a thin film sensor comprising a sensing electrode layer, and a driving electrode layer, and an optically transparent substrate;
a surface of the cover lens having the window frame being bonded to the sensing electrode layer of the thin film sensor by optical glue;
the substrate having two surfaces, the sensing electrode layer and the driving electrode layer being coated on the two surfaces, respectively;
the substrate being a single layer film; and
the sensing electrode layer being closer to the cover lens compared to the driving electrode layer;
the method comprising preparing the thin film sensor by;
coating two surfaces of the substrate with an optically transparent electrode material;
etching the electrode material located on one surface of the substrate to form a sensing electrode pattern;
etching the electrode material located on the other surface of the substrate to form a driving electrode pattern; and
preparing the sensing electrode layer and the driving electrode layer by coating said two surfaces of the substrate with an ITO conductive film;
bonding a first portion of a printed circuit board to the thin film sensor above the sensing electrode pattern using an anisotropic conductive adhesive; and
bonding a second portion of the printed circuit board to the thin film sensor below the driving electrode pattern using an anisotropic conductive adhesive.
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Accused Products
Abstract
The present invention relates to a thin film sensor, capacitive touch panel having the sensor and preparation method thereof and terminal product. The thin film sensor of the present invention has only one optically conductive substrate. Specifically, only one optically transparent substrate is used, a sensing electrode layer and a driving electrode layer are coated on the upper and lower surfaces of the substrate, respectively, which helps to reduce the thickness of the thin film sensor on one hand, thus contributes to the development of light and thin of a touch panel and touch electronics; on the other hand, the material selection and the preparation process are simple, the selection of two substrates is not necessary to prepare two optically conductive thin film.
48 Citations
7 Claims
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1. A preparation method for a capacitive touch panel, the capacitive touch panel comprising:
- a cover lens provided with a window frame on a surface thereof;
the window frame being fabricated on a surface of the cover lens by screen printing;
a thin film sensor comprising a sensing electrode layer, and a driving electrode layer, and an optically transparent substrate;
a surface of the cover lens having the window frame being bonded to the sensing electrode layer of the thin film sensor by optical glue;
the substrate having two surfaces, the sensing electrode layer and the driving electrode layer being coated on the two surfaces, respectively;
the substrate being a single layer film; and
the sensing electrode layer being closer to the cover lens compared to the driving electrode layer;
the method comprising preparing the thin film sensor by;
coating two surfaces of the substrate with an optically transparent electrode material;
etching the electrode material located on one surface of the substrate to form a sensing electrode pattern;
etching the electrode material located on the other surface of the substrate to form a driving electrode pattern; and
preparing the sensing electrode layer and the driving electrode layer by coating said two surfaces of the substrate with an ITO conductive film;
bonding a first portion of a printed circuit board to the thin film sensor above the sensing electrode pattern using an anisotropic conductive adhesive; and
bonding a second portion of the printed circuit board to the thin film sensor below the driving electrode pattern using an anisotropic conductive adhesive. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a cover lens provided with a window frame on a surface thereof;
Specification