# US 8,866,708 B2 · Light emitting diode switch device and array > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,866,708 B2 - Document ID: US8866708B2 - Status: Granted - Kind: B2 - Application number: 13/011,745 - Filed: 2011-01-21 - Published: 2012-07-26 - Granted: 2014-10-21 - Earliest claimed: 2011-01-21 - Applicants: Peter Sui Lun Fong - Inventors: Peter Sui Lun Fong - Web page: https://patentgrep.com/patent/US8866708B2 ## CPC - G06F 3/044: by capacitive means - A61L 2/10: Ultraviolet [UV] radiation - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/042: by opto-electronic means - G09G 3/14: Semiconductor devices, e.g. diodes - H05B 45/20: Controlling the colour of the light - A61L 2202/11: Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps - G05B 19/409: characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters (G05B19/408, G05B19/4093 take precedence) - G05B 2219/35412: Special interface for manual input to pc - H05B 47/115: by determining the presence or movement of objects or living beings - H10W 90/00: Package configurations - H10W 90/756: {between a chip and a stacked lead frame, conducting package substrate or heat sink} - Y02B 20/30: Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED] - Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract An LED switch device and a matrix thereof are disclosed. There is an electroluminescent semiconductor element with a first polarity contact and a second polarity contact. There is also a first polarity LED lead frame, to which the electroluminescent semiconductor element is mounted. The first polarity contact of the electroluminescent semiconductor element is electrically connected to the first polarity LED lead frame. The LED switch device has a second polarity LED lead frame electrically connected to the second polarity contact of the electroluminescent semiconductor element. The LED switch device also has a touch sensor lead frame that is electrically connected to a touch sensor lead. ## Claims ### Claim 1 A light emitting diode switch device, comprising: a first polarity lead; at least one electroluminescent semiconductor element with a first polarity contact and a second polarity contact; a first polarity LED lead frame with the at least one electroluminescent semiconductor element mounted thereto with the first polarity contact thereof electrically connected to the first polarity lead; a second polarity lead; a second polarity LED lead frame electrically connected to the second polarity lead, the second polarity lead being electrically connected to the second polarity contact of the electroluminescent semiconductor element; a first touch sensor structure of a unitary construction defined by a first touch sensor lead section, a first touch sensor contact section, and a first touch sensor lead frame section, wherein the first touch sensor contact section and the first touch sensor lead frame section are each electrically connected to and structurally integral with the first touch sensor lead section, an entire structural contiguity of the first touch sensor structure independently detecting a capacitive touch input and independently correlated with an independent capacitive touch sensor controller input; and a second touch sensor structure of a unitary construction defined by a second touch sensor lead section, a second touch sensor contact section and a second touch sensor lead frame section, wherein the second touch sensor contact section and the second touch sensor lead frame section are each electrically connected to and structurally integral with the second touch sensor lead section, an entire structural contiguity of the second touch sensor structure independently detecting a capacitive touch input and independently correlated with another independent capacitive touch sensor controller input; an at least partially translucent case encapsulating the electroluminescent semiconductor element, the first polarity LED lead frame, the second polarity LED lead frame, the first touch sensor lead frame section, and the second touch sensor lead frame section; wherein the entire structural contiguity of the first touch sensor lead frame section and the first touch sensor contact section is unexposed on an outer surface of the case, the first touch sensor contact section extends partially around a first subsection of an internal circumference of the at least partially translucent case and galvanic isolation being maintained while dielectric conduction is allowed; wherein the entire structural contiguity of the second touch sensor lead frame section and the second touch sensor contact section is unexposed on an outer surface of the case, the second touch sensor contact section extends partially around a second subsection of the internal circumference of the at least partially translucent case and galvanic isolation being maintained while dielectric conduction is allowed. ### Claim 2 (depends on 1) The light emitting diode switch device of claim 1, wherein the case is a through-hole package. ### Claim 3 (depends on 1) The light emitting diode switch device of claim 1, wherein the first touch sensor lead frame section is disconnected from the electroluminescent semiconductor element. ### Claim 4 (depends on 1) The light emitting diode switch device of claim 1, wherein a first one of the electroluminescent semiconductor elements corresponds to a first visible spectrum wavelength emission and a second one of the electroluminescent semiconductor elements corresponds to a second visible spectrum wavelength emission different from the first visible spectrum wavelength emission. ### Claim 5 (depends on 1) The light emitting diode switch device of claim 1, wherein: the first polarity lead is a cathode to which a negative power supply voltage is applied as a negative common; and the second polarity lead is an anode. ### Claim 6 (depends on 1) The light emitting diode switch device of claim 1, wherein: the first polarity lead is an anode to which a positive power supply voltage is applied as a positive common; and the second polarity lead is a cathode. ### Claim 7 (depends on 1) The light emitting diode switch device of claim 1, wherein the second polarity lead is connected to a light emitting diode driver output, and the first touch sensor lead section is independently connected to the capacitive touch sensor controller input. ### Claim 8 A combination input and output device, comprising: a light emitting diode driver integrated circuit including a plurality of independent output lines; a capacitive touch input controller integrated circuit including a plurality of independent input lines; and an array of light emitting diode switch devices, each device including: a first polarity lead; at least one electroluminescent semiconductor element with a first polarity contact and a second polarity contact; a first polarity LED lead frame with the at least one electroluminescent semiconductor element mounted thereto with the first polarity contact thereof electrically connected to the first polarity lead; a second polarity lead; a second polarity LED lead frame electrically connected to the second polarity lead, the second polarity lead being electrically connected to the second polarity contact of the electroluminescent semiconductor element; a first touch sensor structure of a unitary construction defined by a first touch sensor lead section, a first touch sensor contact section, and a first touch sensor lead frame section, wherein the first touch sensor contact section and the first touch sensor lead frame section are each electrically connected to and structurally integral with the first touch sensor lead section, the first touch sensor contact section is electrically connected to and structurally integral with the first touch sensor lead frame section, an entire structural contiguity of the first touch sensor structure independently detecting a capacitive touch input and independently correlated with an independent capacitive touch sensor controller input; and a second touch sensor structure of a unitary construction defined by a second touch sensor lead section, a second touch sensor contact section and a second touch sensor lead frame section, wherein the second touch sensor contact section and the second touch sensor lead frame section are each electrically connected to and structurally integral with the second touch sensor lead section, an entire structural contiguity of the second touch sensor structure independently detecting a capacitive touch input and independently correlated with an independent capacitive touch sensor controller input; an at least partially translucent case encapsulating the electroluminescent semiconductor element, the first polarity LED lead frame, the second polarity LED lead frame, the first touch sensor lead frame section and the second touch sensor lead frame section; wherein the entire structural contiguity of the first touch sensor lead frame section and the first touch sensor contact section is unexposed on an outer surface of the case, the first touch sensor contact section extends partially around a first subsection of an internal circumference of the at least partially translucent case and galvanic isolation being maintained while dielectric conduction is allowed; wherein the entire structural contiguity of the second touch sensor lead frame section and the second touch sensor contact section is unexposed on an outer surface of the case, the second touch sensor contact section extends partially around a second subsection of the internal circumference of the at least partially translucent case and galvanic isolation being maintained while dielectric conduction is allowed; wherein each of the first touch sensor structure and the second touch sensor structure independently and simultaneously detecting capacitive touch input without any cooperation with a respective other one of the first touch sensor structure and the second touch sensor structure, with a specific combination of the first-axis matrix coordinate position corresponding to the first touch sensor structure and the second-axis matrix coordinate position corresponding to the second touch sensor structure uniquely identifying a specific one of the light emitting diode switch devices in the array. ### Claim 9 (depends on 8) The combination input and output device of claim 8, wherein each of the light emitting diode switch device includes: a first polarity LED lead frame with the first electroluminescent semiconductor element mounted thereto; a plurality of second polarity LED lead frames, a one of a first subset of the plurality of second polarity LED lead frames being electrically connected to the one of the plurality of independent output lines of the light emitting diode driver integrated circuit; and wherein the one of the first subset of the plurality of first polarity LED lead frames is electrically connected to the first electroluminescent semiconductor element. ### Claim 10 (depends on 9) The combination input and output device of claim 9, further comprising: a second electroluminescent semiconductor element mounted to the first polarity LED lead frame. ### Claim 11 (depends on 8) The combination input and output device of claim 8, wherein a touch input corresponds to a changing capacitance value of the first touch sensor lead as detected by the capacitive touch input controller integrated circuit. ### Claim 12 (depends on 8) The combination input and output device of claim 8, further comprising: a data processing device electrically connected to the capacitive touch input controller integrated circuit and the light emitting diode driver integrated circuit, the data processing device being programmed with executable instructions for generating outputs to the light emitting diode driver integrated circuit in response to inputs from the capacitive touch input controller integrated circuit.