# US 12,001,172 B2 · Electronic device and wrist device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,001,172 B2 - Document ID: US12001172B2 - Status: Granted - Kind: B2 - Application number: 17/205,142 - Filed: 2021-03-18 - Published: 2021-09-30 - Granted: 2024-06-04 - Earliest claimed: 2020-03-25 - Assignees: Casio Computer Co., Ltd. - Applicants: Casio Computer Co., Ltd. - Inventors: Takashi Sano - Web page: https://patentgrep.com/patent/US12001172B2 ## CPC - G04G 21/04: using radio waves (radio-controlled time-pieces G04R) - G04G 17/04: Mounting of electronic components - G04G: ELECTRONIC TIME-PIECES ## Abstract An electronic device includes a ring-shaped antenna element, a conductor and a dielectric. The conductor has the same potential as GND. The dielectric is interposed between the antenna element and the conductor. The antenna element, the dielectric and the conductor are disposed so as to lie on top of one another in plan view. ## Claims ### Claim 1 An electronic device comprising: an antenna element having a ring shape; a conductor having a potential same as GND; a dielectric interposed between the antenna element and the conductor; a body case disposed below the antenna element; an exterior member disposed on an upper portion of the body case and covering at least a part of the antenna element; and a screw configured to fix the exterior member to the body case, wherein the screw is insulated from the antenna element and is in a conductive state with the conductor, and wherein the antenna element, the dielectric and the conductor are disposed so as to lie on top of one another in plan view. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein the conductor is disposed below the antenna element and on the upper portion of the body case, wherein the dielectric is interposed between the conductor and the antenna element, thereby preventing the conductor and the antenna element from contacting one another, and wherein the antenna element and the conductor are electrically connected to the GND. ### Claim 3 (depends on 2) The electronic device according to claim 2, wherein the body case is interposed between the antenna element and the GND. ### Claim 4 (depends on 2) The electronic device according to claim 2, further comprising an electric circuit disposed in the body case, wherein the antenna element is electrically connected to the GND by the electric circuit being electrically connected to the antenna element and the GND. ### Claim 5 (depends on 2) The electronic device according to claim 2, wherein the conductor comprises a conductor film disposed on at least a portion of an upper surface and at least a portion of an inner surface of the body case. ### Claim 6 (depends on 2) The electronic device according to claim 2, wherein the conductor is formed of a material having a lower resistance than a material of the body case has. ### Claim 7 (depends on 2) The electronic device according to claim 2, wherein a characteristic and a shape of the dielectric are set according to a function required for the antenna element. ### Claim 8 (depends on 2) The electronic device according to claim 2, wherein the exterior member covers the antenna element and the dielectric such that the antenna element and the dielectric are not visible from outside the electronic device. ### Claim 9 (depends on 2) The electronic device according to claim 2, wherein the dielectric comprises a sealing member configured to make an inside of the body case watertight. ### Claim 10 (depends on 1) The electronic device according to claim 1, wherein the dielectric is provided with a first alignment part, and wherein the antenna element is provided with a second alignment part at a position corresponding to the first alignment part in a state in which the antenna element is attached to the dielectric, the second alignment part being fitted with the first alignment part. ### Claim 11 (depends on 1) The electronic device according to claim 1, wherein the GND is disposed below the antenna element. ### Claim 12 (depends on 1) The electronic device according to claim 1, wherein the body case is formed of a metal material, wherein the dielectric is interposed between the antenna element and the body case, and wherein the body case and the conductor are formed as a single structure and having the potential same as the GND. ### Claim 13 (depends on 12) The electronic device according to claim 12, wherein the dielectric comprises a sealing member configured to make an inside of the body case watertight. ### Claim 14 (depends on 12) The electronic device according to claim 12, wherein on the upper portion of the body case, an area of a portion of the body case where the antenna element lies is smaller than an area of a portion of the body case where the antenna element does not lie. ### Claim 15 (depends on 12) The electronic device according to claim 12, wherein a peripheral surface of the dielectric is provided with a recess. ### Claim 16 (depends on 15) The electronic device according to claim 15, wherein the dielectric is a first dielectric having a first permittivity, wherein the electronic device further comprises a second dielectric in the recess, and wherein the second dielectric has a second permittivity different from the first permittivity. ### Claim 17 (depends on 1) A wrist device comprising the electronic device according to claim 1.