# US 11,309,745 B2 · Wireless charging device and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,745 B2 - Document ID: US11309745B2 - Status: Granted - Kind: B2 - Application number: 16/301,526 - Filed: 2018-02-08 - Published: 2021-07-29 - Granted: 2022-04-19 - Earliest claimed: 2017-06-26 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Xuewen Lv; Xiying Zhang - Web page: https://patentgrep.com/patent/US11309745B2 ## CPC - H02J 50/30: using light, e.g. lasers - G02B 6/0031: {Reflecting element, sheet or layer} - G02B 6/0055: {Reflecting element, sheet or layer} - H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices} - G02B 6/0028: {Light guide, e.g. taper} - G02B 6/0036: {2-D arrangement of prisms, protrusions, indentations or roughened surfaces} - H02J 2105/44: Portable electronic devices - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A wireless charging device and an electronic device are disclosed. The wireless charging device includes: a photoelectric conversion device and a primary light guide plate; the primary light guide plate having a first light incident surface and a first light exiting surface; and the photoelectric conversion device faces the first fight exiting surface. ## Claims ### Claim 1 A wireless charging device, comprising: a photoelectric conversion device; and a primary light guide plate, having a first light incident surface and a first light exiting surface; wherein the photoelectric conversion device faces the first light exiting surface, the wireless charging device further comprises a primary beam splitting device, having a second light incident surface and a second light exiting surface, the second light exiting surface faces the first light incident surface of the primary light guide plate, and the primary beam splitting device is configured to convert a single beam transmitted to the second light incident surface into a plurality of beams that propagate toward the first light incident surface of the primary light guide plate. ### Claim 2 (depends on 1) The wireless charging device according to claim 1, further comprising: at least one auxiliary light guide plate, having a third light incident surface and a third light exiting surface; at least one auxiliary beam splitting device, having a fourth light incident surface and a fourth light exiting surface; and at least one auxiliary photoelectric conversion device, wherein the at least one auxiliary light guide plate is provided in one-to-one correspondence with the at least one auxiliary beam splitting device; the third light exiting surface of each of the at least one auxiliary light guide plate faces the forth light incident surface of a corresponding one of the at least one auxiliary beam splitting device; the at least one auxiliary photoelectric conversion device faces the third light emitting surface, the primary beam splitting device comprises a light transmission film, the auxiliary beam splitting device comprises a light receiving film, and the light transmission film is configured to reflect a portion of light beam in the primary beam splitting device to the light receiving film. ### Claim 3 (depends on 2) The wireless charging device according to claim 2, wherein the primary beam splitting device further comprises: a reflective film; and at least one transflective film, wherein the at least one transflective film and the reflective film are sequentially provided in a direction perpendicular to the second light incident surface, and the reflective film is provided at an end portion away from the second light incident surface. ### Claim 4 (depends on 1) The wireless charging device according to claim 1, wherein the primary light guide plate comprises a plurality of the first light exiting surfaces, the wireless charging device comprises a plurality of photoelectric conversion devices, and the plurality of photoelectric conversion devices are provided in one-to-one correspondence with the plurality of first light exiting surfaces. ### Claim 5 (depends on 1) The wireless charging device according to claim 1, wherein an area of the first light exiting surface is equal to an area of the photoelectric conversion device. ### Claim 6 (depends on 1) The wireless charging device according to claim 1, wherein the first light exiting surface is provided with a plurality of mesh points thereon. ### Claim 7 (depends on 3) The wireless charging device according to claim 3, further comprising: a plurality of lenses, provided on the second light exiting surface of the primary beam splitting device, wherein the plurality of lenses are respectively provided in one-to-one correspondence with the at least one transflective film and the reflective film. ### Claim 8 (depends on 3) The wireless charging device according to claim 3, wherein the at least one transflective film comprise a plurality of transflective films, the plurality of transflective films are sequentially provided in the direction perpendicular to the second light incident surface, and reflectance of the plurality of transflective films increases with an increasing distance from the second light incident surface. ### Claim 9 (depends on 3) The wireless charging device according to claim 3, wherein the at least one transflective film and the reflective film are parallel with each other. ### Claim 10 (depends on 9) The wireless charging device according to claim 9, wherein the reflective film and the second light incident surface have an angle of 45 degrees therebetween. ### Claim 11 (depends on 2) The wireless charging device according to claim 2, further comprising: a coupler, provided on the second light incident surface of the primary beam splitting device and configured to receive a light beam. ### Claim 12 (depends on 1) The wireless charging device according to claim 1, further comprising: an optical film, provided on a side of the first light exiting surface close to the photoelectric conversion device and configured to improve uniformity of emergent light of the first light exiting surface. ### Claim 13 (depends on 1) The wireless charging device according to claim 1, further comprising: a light emitting device, configured to convert an electrical energy into a light beam and emit the light beam to the second light incident surface. ### Claim 14 (depends on 1) An electronic device, comprising the wireless charging device according to claim 1. ### Claim 15 (depends on 14) The electronic device according to claim 14, further comprising: a battery, electrically connected with the wireless charging device and configured to store an electrical energy converted by the wireless charging device. ### Claim 16 (depends on 3) The wireless charging device according to claim 3, wherein the primary beam splitting device further comprises: a reflective film; and at least one transflective film, wherein the at least one transflective film and the reflective film are sequentially provided in a direction perpendicular to the second light incident surface, and the reflective film is provided at an end portion away from the second light incident surface.