135results about "Contact with seperate bridge contact" patented technology

A sheet switch module including a sheet switch (21) having a central contact (32) disposed on a circuit board (33), a circumferential contact (20) disposed circumferentially of the central contact (32), a spring (22) disposed above the central contact (32), and a transparent sheet member (23) configured to cover the spring (22), the sheet switch (21) forming a switching circuit such that the spring (22) provides electrical conduction between the central contact (32) and the circumferential contact (20) when the sheet member is pressed, the sheet member (23) being formed by a light guiding sheet (30) configured to guide light emitted from an LED (34) along an upper surface of the spring (22).

An input device that is capable of sensing how hard a user is pressing when contacted is disclosed. The input device includes a pressure sensing unit generating an electrical signal in accordance with pressure applied on one surface of the pressure sensing unit and a fixed resistance making a parallel electrical connection with the pressure sensing unit. Thus, not only can the input device receive a form of information that is changed proportionally in accordance with the pressure applied by the user, but the deviation in electrical characteristics that may occur during the manufacturing of different products can also be reduced. Also, by adjusting the resistance value of the fixed resistance, the sum of the resistance values by the parallel connection between the fixed resistance and the pressure sensitive resistance can be adjusted so that the electrical signal generated by the input device through pressing can be adjusted.

An input device for constructing an inputting operation unit for various electronic apparatus and a method of manufacturing the input device are provided. The input device allows push-down inputting operation and position inputting operation using the same operating unit. The input device has a position input sensor provided under a key, and a base sheet having a movable contact joined to its bottom face depending on the location where the key is disposed, and a columnar section is disposed in a manner sandwiched between the position input sensor and the base sheet at the center of the movable contact.

A composite capacitance between a common electrode and an X detection electrode having a plurality of detours is small, whereas lengths of parallel electrodes of the X detection electrode are set to have large values. A comprehensive composite capacitance is set to be constant by increasing a composite capacitance between the common electrode and the X detection electrode. For this reason, although the detours are formed in the electrode patterns, a coordinate position can be detected with high accuracy.

A key switch sheet has a pressure sensitive adhesive layer for holding a contact spring by adhering to an apex portion of a dome-shaped contact spring at a back surface of a base material sheet. A thickness of the pressure sensitive adhesive layer at a region to be made to adhere to the apex portion of the contact spring is thicker than a thickness of the pressure sensitive adhesive layer at a peripheral region and thicker than or equal to a thickness of the pressure sensitive adhesive layer at a region where the base material sheet is made to adhere to a substrate.

Mobile phones are in a trend of having thinner configuration due to emphasis on the design. Thus, in order to meet this demand, the present invention aims to thin the key sheet portion as much as possible. A thin key sheet and a thin key unit incorporating the thin key sheet are configured by providing on its surface a key top 2 made of a metal or a resin with indications such as letters, symbols, graphics or the like indicating the functions of keys are formed on the front surface or the back surface thereof, and switch elements 4 for turning ON / OFF of an electric circuit by the pressing of the key top, together with a printed circuit board 5 on which a circuit pattern involved therewith is formed; and by adhering and fixing the key top 2 and the printed circuit board 5 together via a cushion gasket 3 having appropriate elasticity and a filler layer 14 disposed between the key top and the printed circuit board.

A compact, thinned and water-tightened combined switch, is structured by a single switch comprising a front sheet having a domed projection which can be reversed to the back side and is provided at the back side with an electrode, an electric circuit body having an electric contact to contact with the electrode and a domed convex portion provided in the vicinity of the center of the domed projection. In operation process, firstly the projection is reversed and an electrode provided near the periphery of the convex portion contacts with the electric contact on the electric circuit body and secondly an electrode provided in the vicinity of the center of the domed convex portion contacts with the electric contact on the electric circuit body.

A portable electronic device includes a housing including at a hole, an elastic structure including at an actuator wedged in the hole of the housing, and a circuit board installed below the housing. A metal dome is located corresponding to the actuator for outputting a key signal when pressed.

An input device comprises a wiring board having stationary contacts and a module unit placed on the wiring board. The module unit has a structure formed integrally with actuating key portions, movable contacts, cushioning members and protruding portions. The movable contacts are disposed under the actuating key portions, and actuated by a push-on operation of the actuating key portions. The cushioning members are disposed in a space between a lower surface of the actuating key portions and an upper surface of a movable contact retainer bearing the movable contacts to make the space shrinkable when subjected to the push-on operation whereas it maintains an uniform height when not subjected to the push-on operation. The protruding portions depress top center portions of the movable contacts. The input device includes switch elements, each comprising the movable contact and the stationary contact, and the switch element is actuated by the push-on operation on the actuating key portion.

An electrical contact area on a printed circuit board (“PCB”), that would otherwise be subject to abrasion and possibly also corrosion, can be protected by covering it with another, more durable contact structure that is bonded to the first-mentioned contact area using an anistropic conductive adhesive (“ACA”). The more durable contact structure may include a member of PCB material or the like with electrically connected electrical contacts on its upper and lower surfaces. At least the upper one of these contacts (which is exposed for the service that involves possible abrasion and / or corrosion) may be given high durability by plating it with hard gold. The lower of these contacts is adhered to the main PCB via the above-mentioned ACA.

The present invention relates to a switch module for a cellular phone that is controlled in such a manner that a side key installed in a lateral side of a cellular phone for thereby conveniently changing a volume mode or a function mode by a one-touch method is pressurized. In the switch module for a cellular phone according to the present invention, a contact part of a connection terminal is bent with a certain elastic force and is always contacted with a pattern formed in a PCB installed in the interior of a cellular phone, for thereby enhancing an inter-connection rate between a pattern of the PCB and the connection terminal. Therefore, the life span of a cellular phone is extended, and a reliability of a product is enhanced.

A sheet switch module includes a circuit board (20) provided with a fixed contact (22) thereon, a light source (30), a movable contact (26) to face the fixed contact (22), a sheet (28) to hold the movable contact (26) on the circuit board, a key top (46) disposed to face the movable contact and a light guiding plate (32) to guide light emitted from the light source (30) to the key top. The light-guiding plate (32) includes a light-receiving part (34) projecting toward an upper surface of the circuit board (20) and a light-guiding part (39). The light-guiding plate (32) is positioned in a substantially horizontal state supported by the light-receiving part (34) on the upper surface of the circuit board (20).

A mobile terminal keypad is provided having a plurality of key switches on the keypad that provides a first signal or a second signal according to the pressure applied to the key switch. In each of the plurality of key switches, a plate is provided to sequentially contact with a first contact and a second contact according to the applied pressure.

A keypad of a mobile communication terminal includes a contact sheet having contacts preferably shaped as hemispherical domes which deflect to turn on / off switch contact point pairs on a printed circuit board. The contact sheet further includes band parts covering the domes and an insulating sheet having at least one pair of semicircular openings for exposing portions of the domes. The insulating sheet is preferably made of a light-reflecting material / color which disperses light to illuminate keys of the keypad.

A sheet switch module includes a circuit board (20) provided with a fixed contact (22) thereon, a light source (30), a movable contact (26) to face the fixed contact (22), a sheet (28) to hold the movable contact (26) on the circuit board, a key top (46) disposed to face the movable contact and a light guiding plate (32) to guide light emitted from the light source (30) to the key top. The light-guiding plate (32) includes a light-receiving part (34) projecting toward an upper surface of the circuit board (20) and a light-guiding part (39). The light-guiding plate (32) is positioned in a substantially horizontal state supported by the light-receiving part (34) on the upper surface of the circuit board (20).

A push switch includes a case having a recess portion, a first fixed contact placed in the recess portion, and a second fixed contact placed in the recess portion. Furthermore, the push switch includes a dome-shaped movable contact placed in the recess portion and having a center portion facing the first fixed contact with a space therebetween, a protective sheet for covering the recess portion, and a protrusion member fixed to the protective sheet by welding at a convex side of the center portion of the movable contact. The first fixed contact and the second fixed contact are provided at positions that are brought into contact with the movable contact when the movable contact is elastically reversed.

A light-emitting keyboard is disclosed, which comprises: a support panel, having at least one first hole; a light guide plate, having at least one second hole; a reflection plate circuit assembly, including a reflection plate and a circuit; at least one light source, for projecting light to the light guide plate; at least one elastic member, each having an activating post and being disposed inside its corresponding first and second holes while enabling its bottom to abut against the reflection plate circuit assembly; a keycap, mounted on the elastic member; and a shell; wherein, the light guide plate and the reflection plate circuit assembly forms a stacking arrangement from top to bottom in series; and the bottom of the activating post in each elastic member is enabled to engage with the reflection plate circuit assembly for enabling the circuit to be electrically conducted when the keycap is being pressed.

Described is a keypad and its method of manufacture. In one embodiment, a keypad is provided that includes a substrate having a plurality of donut-shaped recesses located at each site of a button for inputting user information, a plurality of cushions each filled with an incompressible fluid (e.g., water), a flex circuit layer, a plurality of metal membranes and an over-molded thermoplastic elastomer layer. During the over-molding of the thermoplastic elastomer layer, the plurality of cushions filled with an incompressible fluid prevents collapse of the space between the flex circuit layer and the plurality of metal membranes. After the layers of the keypad are assembled, the incompressible fluid is removed which leaves a space between the flex circuit layer and the plurality of metal membranes.

Particular embodiments of the inventive technology may relate to an electrical switch apparatus, and related methods, that include a conductive contiguity, alone with which two sequential electrical contacts may be induced upon application of force by a user, thereby effecting two or more distinct electrical events. Embodiments of the inventive technology may more specifically include a conductive contiguity having a truncated leg that enables inducement of a first electrical contact before a second, subsequential contact is induced.

A key structure used in a portable electronic device includes a resilient member forming a plurality of conducting films and a column, a dome member forming an arch portion and a peripheral portion, a circuit board forming a plurality of first terminals, second terminals and a third terminal. The dome member is mounted to the circuit board, the peripheral portion electronically connects to the second terminals, the resilient member covers the dome member, the conducting films conductively contact the first terminals. The resilient member is pressed to make the column resist against the arch portion, thereby the first terminals and the second terminals are both conductive, or the first terminals, the second terminals and the third terminal are all conductive.

Mobile phones are in a trend of having thinner configuration due to emphasis on the design. Thus, in order to meet this demand, the present invention aims to thin the key sheet portion as much as possible. A thin key sheet and a thin key unit incorporating the thin key sheet are configured by providing on its surface a key top 2 made of a metal or a resin with indications such as letters, symbols, graphics or the like indicating the functions of keys are formed on the front surface or the back surface thereof, and switch elements 4 for turning ON / OFF of an electric circuit by the pressing of the key top, together with a printed circuit board 5 on which a circuit pattern involved therewith is formed; and by adhering and fixing the key top 2 and the printed circuit board 5 together via a cushion gasket 3 having appropriate elasticity and a filler layer 14 disposed between the key top and the printed circuit board.

A portable electronic device may have an inverted dome switch assembly. The switch assembly may have an inverted dome that has a base and a conductive underside. The base may be attached to a button member. Two electrical contacts in the button member may face the conductive underside. Corresponding conductive traces may be connected to the contacts. The dome may bear against a housing member. The button member may be movable with respect to the housing member from an unactuated position to an actuated position. The dome switch may form a footprint based upon the dome base area. The housing member may extend into a portion of the footprint and not into the remaining portion of the footprint allowing that space to be otherwise utilized.