摘要:
The present invention includes a flexible, pressurizable keyboard made of resilient layers of plastic material, with molded keys which are deformable when pressed so as to send a signal to an electrical device. The keys are arranged with a flexible electrical circuit thereattached, which when depressed, establish a proper complete circuit.
摘要:
The present invention comprises a signal generator for sending an electrical signal upon receipt of an input force, the signal generator having a first outside layer of flexible, resilient plastic with a periphery and an inner surface, a second outside layer of flexible, resilient plastic having a periphery and an inner surface, the first and second layers joined at least at their periphery to form walls defining primary chamber. The primary chamber also has at least one inside layer of flexible, resilient plastic having a periphery and a first and second surface, the inside layer also being joined at its periphery, to the walls of the primary chamber to sub-divide the primary chamber into a plurality of adjacent sub-chambers. A pressurized fluid may be disposed in each of the sub-chambers and an electrical circuit may be arranged in at least one of the sub-chambers, to effectuate the transmission of an electrical signal from the primary chamber upon receipt of an input force within the primary chamber.
摘要:
A cursor movement control key and electronic keyboard for a computer having a video display incorporates a force-sensitive resistor having a junction resistance which varies inversely with pressure applied thereto. The external key cap engages an actuator which bears against the force-sensitive resistor. The actuator has a plurality of four pads which bear against respective electrode regions of the force-sensitive resistor. The pads are positioned at the 0.degree., 90.degree., 180.degree., and 270.degree. positions. The actuator mounts relative to a keyboard mounting plate. At least one of the actuator and mounting plate include opposed lateral projections which engage relative to the other of the actuator and mounting plate to both, a) retain the actuator to the mounting plate, and yet b) allow clearance for tilting movement of the actuator relative to the mounting plate. The force-sensitive resistor is comprised of a material which is predictably and consistently responsive to operator proportional force inputs between about 50 grams and 175 grams. The opposing electrode regions are connected with parallel resistances which cause the resulting resistance response to be more linear for operator force inputs below some preset value selected somewhere between about 50 and 175 grams.
摘要:
A touch-sensitive panel for outputting data corresponding to pressed positions on a touching plate included in the touch-sensitive panel and for sending the output data to a display device includes a plurality of first electrodes arranged on the touching plate, a plurality of second electrodes being opposed to the plurality of first electrodes and being capable of conducting to the plurality of first electrodes located at the pressed positions when the touching plate is pressed, a first connecting plate for connecting the plurality of first electrodes to the display device, a second connecting plate for connecting the plurality of second electrodes to the display device, an anisotropic electrically conductive bonding layer having a plurality of through holes and arranged on the first connecting plate, and a conductive layer including conductive particles, the conductive layer being laid between the plurality of first electrodes and the anisotropic electrically conductive bonding layer, the conductive particles being in the through holes.
摘要:
A conductive resilient pad for keyboards, such as computer keyboards, is disclosed. The pad is composed of EPDM blended with a copolymer of propylene oxide and allyl glycidyl ether and Ketjen Black. Each of the polymers is present in the amount of about 25 to about 75 parts and the Ketjen Black is present in an amount of about 1 to about 30 parts.
摘要:
A thermally curable conductive polymer thick film composition comprising, by weight:(a) about 3-15 parts of at least one thermoplastic vinyl acetate/vinyl chloride/dicarboxylic acid multipolymer resin;(b) a second thermoplastic resin selected from the group consisting of:(i) about 1-6 parts of at least one thermoplastic polyurethane resin;(ii) about 2-10 parts of at least one thermoplastic polyester resin; or(iii) about 1-10 parts of a mixture of at least one thermoplastic polyurethane and at least one thermoplastic polyester resin;(c) about 0.05-1 parts of a tertiary amine;(d) an effective amount of at least one organic solvent capable of substantially dissolving (a), (b), and (c) ingredients; and(e) about 50-80 parts of silver flake.
摘要:
A touch-sensitive matrix switch assembly includes a pair of transparent insulating substrates having conductive row strips and column strips. The conductive row strips and column strips are separated by longitudinal extending channels, and an insulating spacer strip is deposited in each row channel and in each column channel. The substrates are mounted together with the row conductors extending transversely with respect to the column conductors. An air gap between the row conductors and column conductors is provided by the engagement of the row spacer strips against the column spacer strips. The space strips are formed by very small diameter transparent glass or polymer particles which are mixed with a transparent polymer adhesive in a volatile solvent. The glass or polymer particle/adhesive mixture is sprayed into the channels through a mask to produce a transparent, non-conductive glass or polymer deposit which is enlarged slightly out of the channel, thereby defining a spacer strip. In an analog touch switch assembly, spacer dots are applied onto the surface of a resistive sheet by pneumatically sputtering small diameter transparent glass or polymer particles which are coated by a transparent polymer adhesive.
摘要:
The invention is directed to a membrane switch comprising a first layer 30 of flexible insulating material and a second layer 50 having relatively inflexible characteristics, each layer 30, 50 having an array of conductors 40, 54 disposed thereon and defining a plurality of switch point areas over a substantial portion of the respective layers. The first sheet is transparent and carries visible symbols on the inner surface thereof formed by a first layer 36 of inks printed thereon and further includes a barrier coating over such symbols to provide contrast therefore. The first array 40 of conductors is printed on the barrier coating. The second array 54 of conductors is printed on the inflexible layer. The first and second arrays 40, 54 of conductors are connected to respective voltage sources, preferably by further arrays of conductors 42, 56 disposed over at least portions of the first and second arrays, 40, 54 the further arrays 42, 56 being of a material having a higher conductivity than the material used for the first and second arrays 40, 54. Spacer means 58 for the switch is formed by printing an array of spaced apart dots of a dielectric and insulating coating on top of at least one of the arrays of conductors in the defined switch point areas to hold the switch point areas normally apart until pressure is placed thereupon to deform the first sheet 30 and effect a switch closure between corresponding switch point areas of the arrays 40, 54. A method for making the switch is also disclosed.
摘要:
A key-touch sensor has an electric circuit formed on a first electrically insulating substrate covered with a carbon electrode, an electric circuit formed on a second electrically insulating substrate covered with a carbon electrode which is opposed to the electric circuit on the first substrate across a gap, and a pressure-sensitive electroconductive layer deposited to at least one of the first or second substrates and disposed to fill the gap.
摘要:
A switch apparatus comprising a nematic curvilinearly aligned phases liquid crystal material located between a pair of electrode means wherein a flexible substrate having a conductive segment formed therein may be positioned in a spaced substantially parallel relation to one of the electrode means. The flexible substrate has sufficient flexibility to deflect toward one of the electrode means in response to the application of pressure thereto so that at least a portion of the flexible substrate is deflected toward one of the electrode means to operatively couple the conductive segment to the electrode means to effect an input of information and to cause a display of the same.