# US 12,602,015 B2 · Electronic device and method for assembling electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,602,015 B2 - Document ID: US12602015B2 - Status: Granted - Kind: B2 - Application number: 18/145,425 - Filed: 2022-12-22 - Published: 2023-06-29 - Granted: 2026-04-14 - Earliest claimed: 2021-12-22 - Assignees: Casio Computer Co., Ltd. - Applicants: Casio Computer Co., Ltd. - Inventors: Yuta Saito; Sae Uchibayashi - Web page: https://patentgrep.com/patent/US12602015B2 ## CPC - G04C 10/02: the power supply being a radioactive {or photovoltaic} source - H10F 19/00: Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules - G04D 3/0002: {for mechanical working other than with a lathe (lathes for watchmakers G04D3/02)} - H02S 40/22: Light-reflecting or light-concentrating means (directly associated with the PV cell or integrated with the PV cell H10F77/42) - H10F 19/90: Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers (between thin-film photovoltaic cells on a single substrate H10F19/35) - Y02E 10/50: Photovoltaic [PV] energy - G04C: ELECTROMECHANICAL CLOCKS OR WATCHES - H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION - G04D: APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES - H02S: GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES (obtaining electrical energy from radioactive sources G21H1/12; light sensitive inorganic semiconductor devices H10F; light sensitive organic semiconductor devices H10K30/00; thermoelectric devices H10N10/00; pyroelectric devices H10N15/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An electronic device includes a cylindrical case, a display, an annular light-transmitting parting member, an annular solar cell and an annular elastic member. At least the upper end of the case is open. The display is disposed in the case and exposed to a side where the upper end is located. The parting member is annular along the inner circumferential surface of the case. The annular solar cell is disposed under the parting member. The elastic member fixes the outer edge of the annular solar cell. ## Claims ### Claim 1 An electronic device comprising: a case with at least an upper end open; a display disposed in the case and exposed to a side where the upper end is located; an annular light-transmitting parting member disposed along an inner circumferential surface of the case; an annular solar panel disposed under the annular light-transmitting parting member; and an elastic member that fixes an outer edge of the annular solar panel to the inner circumferential surface of the case. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein the annular light-transmitting parting member is fitted in the case via the elastic member, wherein the case is provided with a step surface, and has an inner diameter that is larger above the step surface than under the step surface, and wherein the outer edge of the annular solar panel is fixed on the step surface by the elastic member. ### Claim 3 (depends on 1) The electronic device according to claim 1, wherein the annular solar panel is separated from the annular light-transmitting parting member. ### Claim 4 (depends on 1) The electronic device according to claim 1, further comprising: a wiring part having one end that is connected to the annular solar panel to transmit electric power generated by the annular solar panel; and a coating film at least at a connection position where the wiring part is connected to the annular solar panel. ### Claim 5 (depends on 4) The electronic device according to claim 4, wherein the annular solar panel has a notch in an inner circumference side thereof, and wherein the wiring part is integrated with the annular solar panel and extends from the notch. ### Claim 6 (depends on 1) The electronic device according to claim 1, wherein the annular solar panel includes a coating film that is disposed on an upper surface of a portion of the annular solar panel and reduces visibility from above to below. ### Claim 7 (depends on 6) The electronic device according to claim 6, wherein the annular solar panel includes a plurality of solar cells, and wherein the coating film is disposed so as to cover a boundary between the solar cells in a plan view of the annular solar panel from above. ### Claim 8 (depends on 1) The electronic device according to claim 1, wherein the parting member includes, on a lower surface thereof, a coating film that reduces visibility of a portion of the annular solar panel from above. ### Claim 9 (depends on 1) The electronic device according to claim 1, further comprising a circuit board configured to: compute current time, and cause the display to display the current time. ### Claim 10 A method for assembling an electronic device, the method comprising: fixing an annular solar panel to an inner circumferential surface of a case with an elastic member, wherein at least an upper end of the case is open; disposing an annular light-transmitting parting member above the annular solar panel and along the inner circumferential surface of the case; and housing a display in the case such that the display is exposed to a side where the upper end is located. ### Claim 11 (depends on 10) The method according to claim 10, wherein the case is provided with a step surface, and has an inner diameter that is larger above the step surface than under the step surface, and wherein fixing the annular solar panel includes placing the annular solar panel on the step surface. ### Claim 12 (depends on 11) The method according to claim 11, wherein fixing the annular solar panel includes fitting the elastic member along the inner circumferential surface of the case, thereby pressing an outer edge of the annular solar panel with the elastic member and temporarily fixing the annular solar panel. ### Claim 13 (depends on 12) The method according to claim 12, wherein fixing the annular solar panel includes fixing the outer edge of the annular solar panel on the step surface with the elastic member. ### Claim 14 (depends on 10) The method according to claim 10, wherein disposing the annular light-transmitting parting member includes fitting the annular light-transmitting parting member to an inner surface of the elastic member, thereby fixing the annular light-transmitting parting member. ### Claim 15 (depends on 14) The method according to claim 14, wherein disposing the annular light-transmitting parting member includes interposing the elastic member between the annular solar panel and the parting member, thereby fixing the annular light-transmitting parting member in a state in which the annular solar panel and the annular light-transmitting parting member are separated from one another. ### Claim 16 (depends on 10) The method according to claim 10, wherein the display includes at least a dial and a hand. ### Claim 17 (depends on 10) The method according to claim 10, wherein housing the display in the case includes housing the display such that the display is disposed at a position inward from an inner edge of the parting member. ### Claim 18 (depends on 10) The method according to claim 10, wherein the display includes at least a dial and a hand, and wherein housing the display in the case includes housing the display such that at least the dial and the hand are disposed at a position inward from an inner edge of the annular light-transmitting parting member. ### Claim 19 (depends on 10) The method according to claim 10, wherein the annular solar panel includes: a plurality of solar cells; and a coating film that is disposed on an upper surface of a portion of the annular solar panel and reduces visibility from above to below, and wherein the coating film is disposed so as to cover a boundary between the solar cells in a plan view of the annular solar panel from above. ### Claim 20 (depends on 10) The method according to claim 10, wherein the annular light-transmitting parting member includes, on a lower surface thereof, a coating film that reduces visibility of a portion of the annular solar panel from above, and wherein disposing the annular light-transmitting parting member includes adjusting an orientation of the parting member so as to reduce the visibility of the portion of the annular solar panel.