# US 2018/0321091 A1 · Sensor Element and Method for Producing a Sensor Element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0321091 A1 - Document ID: US20180321091A1 - Status: Published application - Kind: A1 - Application number: 15/773,156 - Filed: 2016-10-18 - Published: 2018-11-08 - Earliest claimed: 2015-11-02 - Assignees: Epcos AG - Applicants: Epcos AG - Inventors: Jan Ihle; Anke Weidenfelder; Christl Lisa Mead; Gerald Kloiber - Web page: https://patentgrep.com/patent/US20180321091A1 ## CPC - G01K 7/22: the element being a non-linear resistance, e.g. thermistor (G01K7/26 takes precedence) - B28B 3/02: wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form - B28B 11/243: {Setting, e.g. drying, dehydrating or firing ceramic articles (B28B11/242 takes precedence)} - G01K 7/16: using resistive elements - G01K 7/18: the element being a linear resistance, e.g. platinum resistance thermometer (G01K7/26 takes precedence) - H01C 7/008: {Thermistors (H01C7/02 - H01C7/06 take precedence)} - H01C 7/043: {Oxides or oxidic compounds} - H01C 17/08: by vapour deposition - H01C 17/12: by sputtering - H01C 17/281: {by thick film techniques} - H01C 17/283: {Precursor compositions therefor, e.g. pastes, inks, glass frits} - H01C 17/075: by thin-film techniques - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - B28B: SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B) - H01C: RESISTORS ## Abstract A sensor element and a method for producing a sensor element are disclosed. In an embodiment a sensor element includes a ceramic carrier having a top side and an underside, a respective NTC layer arranged on the top side and on the underside of the carrier and at least one electrode, wherein a resistance of the respective NTC layer depends on a thickness and/or geometry of the respective NTC layer. ## Claims ### Claim at position 1 1-16. (canceled) ### Claim 17 A sensor element for temperature measurement comprising: a ceramic carrier comprising a top side and an underside; a respective NTC layer arranged on the top side and on the underside of the carrier, wherein a resistance of the respective NTC layer depends on a thickness and/or geometry of the respective NTC layer; and at least one electrode adjacent an NTC layer. ### Claim 18 (depends on 17) The sensor element according to claim 17, wherein the carrier is printed with the NTC layers, and wherein the NTC layers have different printing geometries. ### Claim 19 (depends on 17) The sensor element according to claim 17, wherein the carrier is printed with the NTC layers, and wherein a printing of the top side and of the underside of the carrier with the respective NTC layer is performed partially or over the whole area. ### Claim 20 (depends on 17) The sensor element according to claim 17, wherein at least one electrode is located at each of the NTC layers. ### Claim 21 (depends on 17) The sensor element according to claim 17, wherein at least two electrodes are located at each of the NTC layers, and wherein the electrodes are separated from one another by a free region. ### Claim 22 (depends on 17) The sensor element according to claim 17, wherein a first electrode is located on the top side of the carrier, wherein a first NTC layer is arranged on a partial region of the first electrode, wherein a second electrode is arranged on the first NTC layer, wherein a second NTC layer is arranged on the underside of the carrier, wherein two electrodes are arranged at the first NTC layer, and wherein the two electrodes are separated from one another by a free region. ### Claim 23 (depends on 22) The sensor element according to claim 22, wherein the first electrode is arranged directly on the top side of the carrier. ### Claim 24 (depends on 22) The sensor element according to claim 22, wherein the second electrode completely covers the NTC layer on the top side of the carrier. ### Claim 25 (depends on 22) The sensor element according to claim 22, wherein only two electrodes are arranged at the first NTC layer. ### Claim 26 (depends on 17) The sensor element according to claim 17, wherein the respective NTC layer has two opposite side surfaces, and wherein a respective electrode is arranged at the side surfaces. ### Claim 27 (depends on 17) The sensor element according to claim 17, wherein the respective electrode comprises at least one sputtered layer. ### Claim 28 (depends on 27) The sensor element according to claim 27, wherein the sputtered layer is directly arranged at the respective NTC layer. ### Claim 29 (depends on 28) The sensor element according to claim 28, wherein the printed layer is directly printed onto the respective NTC layer. ### Claim 30 (depends on 17) The sensor element according to claim 17, wherein the respective electrode comprises at least one printed layer. ### Claim 31 (depends on 17) The sensor element according to claim 17, wherein at least one of the NTC layers has a cutout, and wherein the cutout sets the resistance of the NTC layer. ### Claim 32 A method for producing a sensor element, the method comprising: providing a NTC powder for forming at least one NTC layer; providing a ceramic carrier material; printing a first surface of the carrier material with an NTC paste in a first printing geometry forming a first NTC layer; sintering a system comprising the carrier material and the first NTC layer; printing a second surface of the carrier material with an NTC paste in a second printing geometry forming a second NTC layer; and sintering the system comprising the carrier material and the second NTC layer, wherein the surfaces of the carrier material are printed with the NTC pastes partially or over the whole area. ### Claim 33 (depends on 32) The method according to claim 32, further comprising partially removing at least one of the NTC layers in order to set a predetermined resistance value.