# US 12,763,012 B2 · Double-sided emissive transparent display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,012 B2 - Document ID: US12763012B2 - Status: Granted - Kind: B2 - Application number: 19/352,153 - Filed: 2025-10-07 - Published: 2026-02-05 - Granted: 2026-10-13 - Earliest claimed: 2022-04-29 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: HyeonHo Son - Web page: https://patentgrep.com/patent/US12763012B2 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H10H 20/856: Reflecting means - H10W 90/00: Package configurations - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0456: with a reflective area and a transmissive area combined in one pixel, such as in transflectance pixels - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - G09G 2320/043: Preventing or counteracting the effects of ageing - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display device includes a first pixel that emits light toward an upper side, a second pixel that emits light toward a lower side, a plurality of lines and a pad electrode. The first pixel includes a first light emitting element, a first pixel circuit connected to the first light emitting element and some of the plurality of lines and a bottom reflective layer that is under the first light emitting element to overlap the first light emitting element and has a greater size than the first light emitting element. The second pixel includes a second light emitting element, a second pixel circuit connected to the second light emitting element and the others of the plurality of lines, and a top reflective layer that on the second light emitting element to overlap the second light emitting element and has a greater size than the second light emitting element. ## Claims ### Claim 1 A display device, comprising: a substrate comprising an active area and a non-active area, the non-active area including a pad area; a thin film transistor disposed on the substrate; a reflective layer disposed on the thin film transistor and connected to the thin film transistor; a plurality of light emitting element disposed on the reflective layer and overlapped with the plurality of light emitting element; an encapsulation film disposed on the plurality of light emitting element; at least one planarization layer disposed on the plurality of light emitting element; a cathode and an anode connected to the plurality of light emitting element; a first power line connected to the anode; a black matrix disposed to surround the plurality of light emitting element; a protection layer disposed on the plurality of light emitting element and the black matrix; a second power line connected to the cathode; and a panel driving circuit disposed in the non-active area. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the cathode and the anode are disposed on a same layer. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the cathode is disposed on one side of the plurality of light emitting element, and the anode is disposed on the other side of the plurality of light emitting element, which is opposite to the one side. ### Claim 4 (depends on 1) The display device according to claim 1, wherein the cathode and the anode are arranged facing to the reflective layer. ### Claim 5 (depends on 1) The display device according to claim 1, wherein the first power line is a high-potential voltage line. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the black matrix is disposed between the plurality of light emitting element. ### Claim 7 (depends on 1) The display device according to claim 1, wherein the encapsulation film comprises a plurality of layers. ### Claim 8 (depends on 1) The display device according to claim 1, wherein the protection layer comprises a plurality of layers. ### Claim 9 (depends on 1) The display device according to claim 1, further comprising: a plurality of pad electrodes disposed in the pad area, wherein the plurality of pad electrodes is exposed from the at least one planarization layer. ### Claim 10 (depends on 9) The display device according to claim 9, wherein the plurality of pad electrodes includes an electrode made of a same material and disposed on a same layer as the first power line. ### Claim 11 (depends on 9) The display device according to claim 9, wherein the plurality of pad electrodes includes an electrode made of a same material and disposed on a same layer as the reflective layer. ### Claim 12 (depends on 1) The display device according to claim 1, wherein the second power line is disposed between the at least one planarization layer and the black matrix. ### Claim 13 (depends on 12) The display device according to claim 12, wherein an area of the black matrix and an area of the second power line on a plane are same. ### Claim 14 (depends on 1) The display device according to claim 1, wherein the first power line is supplying a high-potential voltage to the plurality of light emitting element, and disposed under the plurality of light emitting element, wherein the second power line is supplying a low-potential voltage to the plurality of light emitting element, and disposed on the plurality of light emitting element.