Alps Electric Co., Ltd.

Ryuichi Hagiya

Naoki Yamada

Hideto Matsufusa

Hiroshi Shigetaka

Satoru Takemori

An X electrode layer having X electrodes and a Y electrode layer having Y electrodes are formed on one side of a film board through an insulating film so that the X electrodes and the Y electrodes are arranged into a matrix. Ends of the X electrodes are led to the edge of the film board. The Y electrodes are led through through-holes formed in the insulating film to the edge of the film board in the same plane as the X electrode layer. The X and Y electrodes led to the edge of the film board are connected to a conductor portion formed on a control circuit board. The X and Y electrodes are bonded to the conductor portion by an insulating adhesive containing no conductive particles by heating and pressurization.

Capacitive input device

A coordinate data input device is fabricated by stacking a sensing board having a film provided with a plurality of parallel x-electrodes on its front surface, a plurality of parallel y-electrodes extending perpendicularly to the first electrodes on its back surface, and through holes formed at one end of each electrodes, and a printed wiring board provided with a plurality of through holes at positions corresponding to the through holes formed in the film of the sensing board at the ends of the first and the second electrodes, and a circuitry formed on its back surface, for driving and controlling the first and the second electrodes of the sensing board. Conductive films are formed on the side surfaces of the through holes of the sensing board and those of the printed wiring board so as to electrically connect the first and the second electrodes of the sensing board to the circuitry of the printed wiring board.

Coordinate data input device and method of fabricating the same

A resist film and a bonding layer are disposed between a sensor substrate and a PCB, and a cutout is formed in the resist film and the bonding layer at the part where the through hole of the sensor substrate communicates with the through hole of a PCB to form an air vent communicating with the outside of the edge part of the laminated substrates. When the conductive material is filled in the through hole from the obverse surface of the sensor substrate, the air in the through hole is released from the air vent to thereby reliably fill the conductive material in the through hole, which can reliably bring the electrode and the land 28 into conduction.

Laminated substrates and data input unit using the same

A sheet-shaped switch including a first insulating sheet having a plurality of fixed electrodes formed on an upper surface thereof, a second insulating sheet having movable electrodes which are formed on a lower surface thereof such that the movable electrodes are opposed to the fixed electrodes, and an insulating spacer sandwiched between the upper surface of the first insulating sheet and the lower surface of the second insulating sheet, the insulating spacer defining through-holes which are aligned with the fixed electrodes and the movable electrodes such that each fixed electrode is able to contact an associated movable electrode through one of the through-holes. Protrusions in the form of elongated ridges are disposed between the first insulating sheet and the insulating spacer and/or between the second insulating sheet and the insulating spacer, and are formed around the through holes within 5 mm of the through holes. The protrusions facilitate a thinner switch by allowing the insulating spacer to be 75 .mu.m or less.

Sheet-shaped switch

A coordinate data input device comprises: a sensing board fabricated by forming a plurality of parallel first electrodes on the front surface of a film and forming a plurality of parallel second electrodes perpendicularly to the first electrodes on the back surface of the film, and capable of providing a current corresponding to an electrostatic capacitance between the respective groups of the first and the second electrodes; a resist layer of a thickness equal to that of the first electrodes, formed in regions in the front surface of the film in which the first electrodes are not formed; and a protective sheet adhesively bonded to the respective surfaces of the filling layer and the first electrodes.

Coordinate data input device

A sheet-like switch is disclosed in which the migration of silver can be prevented without requiring the provision of an overcoat. An upper electrode sheet is formed by disposing upper contacts and upper conductive patterns electrically connected to each other on an insulating sheet. A lower electrode sheet is formed by disposing lower contacts and lower conductive patterns electrically connected to each other on an insulating sheet. The upper and lower electrode sheets are stacked on each other across a spacer film provided with a hole. The upper and lower contacts are placed to opposedly face each other within the hole, and the upper and lower conductive patterns located within the hole are extended to the exterior in different directions, so that the upper and lower conductive patterns positioned on the peripheral portion of the hole can be prevented from overlapping each other across the spacer film in the upward and downward direction. Further, the length along the peripheral portion of the hole defined between the upper and lower conductive patterns positioned on the peripheral portion may preferably be 0.5 mm or greater.

Sheet-like switch with nonoverlapping conductive patterns

A coordinate input apparatus has a film sensor substrate. An X electrode array having a plurality of electrodes in parallel to each other is disposed on the obverse surface of the sensor substrate. A Y electrode array having a plurality of electrodes in parallel to each other is disposed on the reverse surface of the sensor substrate in a direction orthogonal to the X electrode array. A first through hole is formed at one end of the X electrode array, while a first land is formed at one end of the Y electrode array. A second land is disposed on the sensor substrate so that it can be electrically connected to the first through hole.

Growing community of inventors

Fukushima-ken, Japan

Ryuichi Hagiya