# US 10,310,304 B2 · Motor vehicle glazing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,304 B2 - Document ID: US10310304B2 - Status: Granted - Kind: B2 - Application number: 15/104,139 - Filed: 2014-12-09 - Published: 2016-10-27 - Granted: 2019-06-04 - Earliest claimed: 2013-12-13 - Assignees: Agc Glass Europe - Applicants: Agc Glass Europe - Inventors: Sebastien Linthout; Jonathan Vivier - Web page: https://patentgrep.com/patent/US10310304B2 ## CPC - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10174: {Coatings of a metallic or dielectric material on a constituent layer of glass or polymer} - B32B 17/10192: {patterned in the form of columns or grids} - B32B 17/10293: {Edge features, e.g. inserts or holes} - B32B 17/10495: {optoelectronic, i.e. optical valve} - B32B 17/10504: {Liquid crystal layer} - B32B 17/10532: {Suspended particle layer} - B32B 17/10541: {comprising a light source or a light guide} - B60J 3/04: adjustable in transparency - B60Q 3/208: Sun roofs; Windows - B60Q 3/80: Circuits; Control arrangements (for dashboards B60Q3/16; for mass transit vehicles B60Q3/47) - G01D 5/24: by varying capacitance - G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)} - G02F 1/172: {based on a suspension of orientable dipolar particles, e.g. suspended particles displays} - B32B 2307/412: Transparent - B32B 2605/00: Vehicles - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05) - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract A motor vehicle glazing including two sheets of glass, outer and inner, brought together by one or more inserted thermoplastic sheets, at least one electrically powered functional assembly being inserted between the sheets of the glazing, a capacitive sensor controlling power supply of the functional assembly by a unit for processing signals emitted by the sensor, the sensor also being inserted into the glazing on a transparent substrate coated with an equally transparent conductive layer, a layer in which the sensor is formed. ## Claims ### Claim 1 A motor vehicle glazing comprising: an external glass sheet and an internal glass sheet joined by one or more thermoplastic interlayer sheets; at least one electrically supplied functional assembly being inserted between the sheets of the glazing; and a capacitive sensor controlling supplying of the functional assembly via a unit for processing signals emitted by the sensor, the sensor also being inserted into the glazing on a transparent support coated with a conductive layer which is also transparent, in which layer the sensor is formed, wherein the capacitive sensor comprises two electrodes formed in the conductive layer, signals emanating from each electrode resulting in an analysis by the processing unit, and wherein the electrodes defining the sensor are extended over the support by conductors also formed in the conductive layer, the conductors being at a distance from one another which is of an order of a greatest dimension of a surface covered by the electrodes. ### Claim 2 (depends on 1) The glazing as claimed in claim 1, wherein the electrodes are interwoven with one another to maximize their interface for a given surface area of the electrodes. ### Claim 3 (depends on 1) The glazing as claimed in claim 1, wherein a surface area of the electrodes constituting the sensor is at most 0.5 dm2. ### Claim 4 (depends on 1) The glazing as claimed in claim 1, further comprising an essentially transparent conductive shield situated on one side of the support, which masks the electrodes from external influences located on the one side. ### Claim 5 (depends on 1) The glazing as claimed in claim 1, wherein the conductive layer in which the sensor is formed comprises, at its periphery, a region surrounding the sensor and connected to ground. ### Claim 6 (depends on 1) The glazing as claimed in claim 1, wherein a position of the electrodes in the glazing is shown by presence of a diode carried by the support of the electrodes and supplied by conductors formed in a same layer in which the electrodes are formed. ### Claim 7 (depends on 1) The glazing as claimed in claim 1, wherein materials and thicknesses of the support, and of the conductive layer, are chosen so that their transmission in a region of visible wavelengths, according to the standard EN 410, is not less than 80%. ### Claim 8 (depends on 1) The glazing as claimed in claim 1, wherein the conductive layer exhibits a resistance which is not greater than 50 Ω/□. ### Claim 9 (depends on 1) The glazing as claimed in claim 1, wherein the functional element is an element which modifies light transmission of the glazing and is a film of SPD (suspended particles device) type. ### Claim 10 (depends on 1) The glazing as claimed in claim 1, wherein the functional element is an element which modifies light transmission of the glazing and is a film of LC (liquid crystal) type. ### Claim 11 (depends on 1) The glazing as claimed in claim 1, wherein the functional element includes an assembly of light-emitting diodes, which diodes are also carried by the support and supplied by the conductive layer. ### Claim 12 (depends on 11) The glazing as claimed in claim 11, wherein the conductive layer is a layer of thin conductive oxide (TCO). ### Claim 13 (depends on 12) The glazing as claimed in claim 12, wherein the conductive layer is a layer of indium oxide doped with tin (ITO). ### Claim 14 (depends on 1) The glazing as claimed in claim 1, wherein the support includes a glass slide, a thickness of which is not greater than 0.8 mm. ### Claim 15 (depends on 1) A process for controlling a glazing as claimed in claim 1, wherein each electrode alternatively, according to a given frequency, is a subject of a determination of capacity, variation in capacity measured for the two electrodes constituting signals determining control of the switch beyond a chosen threshold. ### Claim 16 (depends on 15) The process as claimed in claim 15, wherein the frequency of determination of the capacities is at least is from 1 to 100 Hz. ### Claim 17 (depends on 15) The process as claimed in claim 15, wherein the threshold for controlling the switch is such that a signal/noise ratio is at least 3. ### Claim 18 A motor vehicle glazing comprising: an external glass sheet and an internal glass sheet joined by one or more thermoplastic interlayer sheets; at least one electrically supplied functional assembly being inserted between the sheets of the glazing; and a capacitive sensor for controlling supplying of the functional assembly, the sensor located on a transparent support coated with a conductive layer which is also transparent, in which layer the sensor is formed, wherein one of the thermoplastic interlayer sheets defines a housing and the transparent support has dimensions so that it fits within the housing, wherein the capacitive sensor comprises two electrodes formed in the conductive layer, signals emanating from each electrode resulting in an analysis by the processing unit, and wherein the electrodes defining the sensor are extended over the support by conductors also formed in the conductive layer, the conductors being at a distance from one another which is of an order of a greatest dimension of a surface covered by the electrodes. ### Claim 19 (depends on 18) The motor vehicle glazing of claim 18, wherein the interlayer sheet defining the housing comprises PVB and the support comprises PET or glass. ### Claim 20 (depends on 19) The motor vehicle glazing of claim 19, comprising four interlayer sheets. ### Claim 21 (depends on 1) The motor vehicle assembly of claim 1, wherein a side having the largest surface area of the support has a smaller surface area than a face having the interlayers having the largest surface area.