# US 2014/0151212 A1 · Keyboard > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151212 A1 - Document ID: US20140151212A1 - Status: Published application - Kind: A1 - Application number: 14/096,032 - Filed: 2013-12-04 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Darfon Electronics Corp.; Darfon Electronics (Suzhou) Co., Ltd. - Applicants: Darfon Electronics Corp.; Darfon Electronics (Suzhou) Co., Ltd. - Inventors: Ching-Chuan Chang; Chia-Hung Liu - Web page: https://patentgrep.com/patent/US20140151212A1 ## CPC - H03K 17/975: using a capacitive movable element - G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - H03K 2217/9653: with illumination - H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A keyboard includes a non-conductive board, a plurality of keyswitches, and a capacitive touch sensing sheet. The plurality of keyswitches is disposed on the non-conductive board. Each keyswitch includes a keycap and a support device. The support device is connected to the keycap and the non-conductive board so as to make the keycap movable between a pressing position and a non-pressing position relative to the non-conductive board. The capacitive touch sensing sheet is disposed under the non-conductive board for providing a cursor signal to a computer device. ## Claims ### Claim 1 A keyboard comprising: a non-conductive board; a plurality of keyswitches disposed on the non-conductive board, each keyswitch comprising: a keycap; and a support device connected to the keycap and the non-conductive board for making the keycap movable between a pressing position and a non-pressing position relative to the non-conductive board; and a capacitive touch sensing sheet disposed under the non-conductive board for providing a cursor signal to a computer device. ### Claim 2 (depends on 1) The keyboard of claim 1, wherein the keyswitch has a first support member rotatably intersects with a second support member, the ends of first support member movably connected to the keycap and non-conductive board individually, and the ends of the second support member movably connected to the keycap and non-conductive board individually. ### Claim 3 (depends on 2) The keyboard of claim 2, wherein the non-conductive board is made of plastic material, the non-conductive board has a sliding groove and an engaging groove, the first support member is rotatably pivoted to the engaging groove, the second support member is slidably disposed to the sliding groove, the sliding groove and the engaging groove are formed on the non-conductive board by an insert molding process. ### Claim 4 (depends on 2) The keyboard of claim 2, wherein the keyboard further comprises a circuit board, and the circuit board is disposed on the non-conductive board. ### Claim 5 (depends on 2) The keyboard of claim 2, wherein the non-conductive board is made of transparent plastic material, the capacitive touch sensing sheet is made of indium tin oxide (ITO) material, and the keyboard further comprises: a backlight module disposed under the capacitive touch sensing sheet for providing light to each keyswitch. ### Claim 6 (depends on 1) The keyboard of claim 1, wherein the support device is an arm structure, the arm structure has a free end portion and a fixing end portion, the keycap is connected to the free end portion, and the fixing end portion is disposed on the non-conductive board. ### Claim 7 (depends on 1) The keyboard of claim 1, wherein the keyboard further comprises: a circuit board disposed on the non-conductive board and having a switch corresponding to each keyswitch respectively, the keycap having a triggering portion, the triggering portion triggering the switch when the keycap is pressed to the pressing position. ### Claim 8 (depends on 1) The keyboard of claim 1, wherein the capacitive touch sensing sheet is further used for detecting keyswitch signals generated by at least one keyswitch of the plurality of keyswitches. ### Claim 9 (depends on 1) The keyboard of claim 1, wherein the non-conductive board is made of plastic material. ### Claim 10 (depends on 1) The keyboard of claim 1, wherein the keycap has a first engaging groove and a second engaging groove, the non-conductive board has a third engaging groove and a fourth engaging groove, the support device comprises a first support member and a second support member, the first support member and the second support member form a tilt angle cooperatively with the non-conductive board, the first support member is rotatably pivoted to the first engaging groove and the third engaging groove, and the second support member is rotatably pivoted to the second engaging groove and the fourth engaging groove. ### Claim 11 (depends on 10) The keyboard of claim 10, wherein the keycap further has a magnetic end portion, the non-conductive board further has a magnetic rod portion, and a magnetic absorption force between the magnetic end portion and the magnetic rod portion drives the keycap to move from the pressing position to the non-pressing position with rotation of the first support member and the second support member. ### Claim 12 (depends on 11) The keyboard of claim 11, wherein one of the magnetic end portion and the magnetic rod portion is a magnet, and the other one of the magnetic end portion and the magnetic rod portion is a magnet or is made of magnetic material. ### Claim 13 (depends on 1) The keyboard of claim 1, wherein the support device comprises a first inclined-surface portion, a second inclined-surface portion, a third inclined-surface portion, and a fourth inclined-surface portion, the first inclined-surface portion and the second inclined-surface portion are disposed on the keycap respectively, the third inclined-surface portion and the fourth inclined-surface portion are disposed on the non-conductive board respectively, and the first inclined-surface portion slidably cooperates with the third inclined-surface portion and the second inclined-surface portion slidably cooperates with the fourth inclined-surface portion, so as to make the keycap capable of moving between the pressing position and the non-pressing position relative to the non-conductive board. ### Claim 14 (depends on 13) The keyboard of claim 13, wherein the keycap further has a magnetic end portion, the non-conductive board further has a magnetic rod portion, and a magnetic absorption force between the magnetic end portion and the magnetic rod portion drives the keycap to move from the pressing position to the non-pressing position with sliding of the first inclined-surface portion relative to the third inclined-surface portion and sliding of the second inclined-surface portion relative the fourth inclined-surface portion. ### Claim 15 (depends on 14) The keyboard of claim 14, wherein one of the magnetic end portion and the magnetic rod portion is a magnet, and the other one of the magnetic end portion and the magnetic rod portion is a magnet or is made of magnetic material. ### Claim 16 A keyboard comprising: a plastic board; a plurality of keyswitches disposed on the plastic board, each keyswitch comprising: a keycap; and a support device connected to the keycap and the plastic board for making the keycap movable between a pressing position and a non-pressing position relative to the plastic board; and a capacitive touch sensing sheet disposed under the plastic board for providing a cursor signal to a computer device. ### Claim 17 (depends on 16) The keyboard of claim 16, wherein the keyswitch has a first support member rotatably intersects with a second support member, the ends of first support member movably connected to the keycap and plastic board individually, and the ends of the second support member movably connected to the keycap and plastic board individually. ### Claim 18 (depends on 17) The keyboard of claim 17, wherein the plastic board is made of plastic material, the plastic board has a sliding groove and an engaging groove, the first support member is rotatably pivoted to the engaging groove, the second support member is slidably disposed to the sliding groove, the sliding groove and the engaging groove are formed on the plastic board by an insert molding process. ### Claim 19 (depends on 17) The keyboard of claim 17, wherein the keyboard further comprises a circuit board, and the circuit board is disposed on the plastic board. ### Claim 20 (depends on 17) The keyboard of claim 17, wherein the plastic board is made of transparent plastic material, the capacitive touch sensing sheet is made of indium tin oxide material, and the keyboard further comprises: a backlight module disposed under the capacitive touch sensing sheet for providing light to each keyswitch. ### Claim 21 (depends on 16) The keyboard of claim 16, wherein the support device is an arm structure, the arm structure has a free end portion and a fixing end portion, the keycap is connected to the free end portion, and the fixing end portion is disposed on the plastic board. ### Claim 22 (depends on 16) The keyboard of claim 16, wherein the keyboard further comprises: a circuit board disposed on the plastic board and having a switch corresponding to each keyswitch respectively, the keycap having a triggering portion, the triggering portion triggering the switch when the keycap is pressed to the pressing position. ### Claim 23 (depends on 16) The keyboard of claim 16, wherein the capacitive touch sensing sheet is further used for detecting keyswitch signals generated by at least one keyswitch of the plurality of keyswitches. ### Claim 24 (depends on 16) The keyboard of claim 16, wherein the keycap has a first engaging groove and a second engaging groove, the plastic board has a third engaging groove and a fourth engaging groove, the support device comprises a first support member and a second support member, the first support member and the second support member form a tilt angle cooperatively with the plastic board, the first support member is rotatably pivoted to the first engaging groove and the third engaging groove, and the second support member is rotatably pivoted to the second engaging groove and the fourth engaging groove. ### Claim 25 (depends on 24) The keyboard of claim 24, wherein the keycap further has a magnetic end portion, the plastic board further has a magnetic rod portion, and a magnetic absorption force between the magnetic end portion and the magnetic rod portion drives the keycap to move from the pressing position to the non-pressing position with rotation of the first support member and the second support member. ### Claim 26 (depends on 25) The keyboard of claim 25, wherein one of the magnetic end portion and the magnetic rod portion is a magnet, and the other one of the magnetic end portion and the magnetic rod portion is a magnet or is made of magnetic material. ### Claim 27 (depends on 16) The keyboard of claim 16, wherein the support device comprises a first inclined-surface portion, a second inclined-surface portion, a third inclined-surface portion, and a fourth inclined-surface portion, the first inclined-surface portion and the second inclined-surface portion are disposed on the keycap respectively, the third inclined-surface portion and the fourth inclined-surface portion are disposed on the plastic board respectively, and the first inclined-surface portion slidably cooperates with the third inclined-surface portion and the second inclined-surface portion slidably cooperates with the fourth inclined-surface portion, so as to make the keycap capable of moving between the pressing position and the non-pressing position relative to the plastic board. ### Claim 28 (depends on 27) The keyboard of claim 27, wherein the keycap further has a magnetic end portion, the plastic board further has a magnetic rod portion, and a magnetic absorption force between the magnetic end portion and the magnetic rod portion drives the keycap to move from the pressing position to the non-pressing position with sliding of the first inclined-surface portion relative to the third inclined-surface portion and sliding of the second inclined-surface portion relative the fourth inclined-surface portion. ### Claim 29 (depends on 28) The keyboard of claim 28, wherein one of the magnetic end portion and the magnetic rod portion is a magnet, and the other one of the magnetic end portion and the magnetic rod portion is a magnet or is made of magnetic material.