# US 12,225,752 B2 · Encapsulating cover plate, fabrication method thereof, display panel and fabrication method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,752 B2 - Document ID: US12225752B2 - Status: Granted - Kind: B2 - Application number: 17/293,636 - Filed: 2020-05-27 - Published: 2022-01-13 - Granted: 2025-02-11 - Earliest claimed: 2019-05-31 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Juanjuan You; Li Sun - Web page: https://patentgrep.com/patent/US12225752B2 ## CPC - H10K 59/1201: {Manufacture or treatment} - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/80522: {combined with auxiliary electrodes} - H10K 59/871: {Self-supporting sealing arrangements} - H10K 71/135: {using ink-jet printing} - H10K 71/60: Forming conductive regions or layers, e.g. electrodes - H10K 71/00: Manufacture or treatment specially adapted for the organic devices covered by this subclass - H10K 2102/3026: {Top emission} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An encapsulating cover plate, a method for fabricating the same, a display panel and a method for fabricating the same are provided. The encapsulating cover plate includes a first base substrate; a first auxiliary electrode on the first base substrate; and a second auxiliary electrode on a side of the first auxiliary electrode away from the first base substrate, an orthographic projection of the second auxiliary electrode on the first base substrate being within an orthographic projection of the first auxiliary electrode on the first base substrate. A material of the first auxiliary electrode includes an organic conductive polymer, and a material of the second auxiliary electrode includes a conductive metal. ## Claims ### Claim 1 An encapsulating cover plate for an organic light emitting diode (OLED) display panel, comprising: a first base substrate; a first auxiliary electrode on the first base substrate; and a second auxiliary electrode on a side of the first auxiliary electrode away from the first base substrate, an orthographic projection of the second auxiliary electrode on the first base substrate being within an orthographic projection of the first auxiliary electrode on the first base substrate, wherein a material of the first auxiliary electrode comprises an organic conductive polymer, and a material of the second auxiliary electrode comprises a conductive metal, and the orthographic of the first auxiliary electrode on the first base substrate does not overlap an orthographic projection of a first electrode of an OLED device on the first base substrate. ### Claim 2 (depends on 1) The encapsulating cover plate of claim 1, wherein the organic conductive polymer comprises at least one of polyacetylene, polythiophene, polypyrrole, polyaniline, polyphenylene, or polydiacetylene. ### Claim 3 (depends on 1) The encapsulating cover plate of claim 1, wherein the material of the second auxiliary electrode comprises a conductive alloy. ### Claim 4 (depends on 1) The encapsulating cover plate of claim 1, wherein the material of the second auxiliary electrode comprises at least one of silver, aluminum, copper, gold, or molybdenum. ### Claim 5 (depends on 1) An organic light emitting diode (OLED) display panel, comprising the encapsulating cover plate of claim 1 and an OLED array substrate. ### Claim 6 (depends on 5) The OLED display panel of claim 5, wherein the OLED array substrate comprises: a second base substrate; and the OLED device on the second base substrate; the OLED device comprising the first electrode, a transparent second electrode, and a light emitting layer between the first electrode and the transparent second electrode, wherein the transparent second electrode is on a light emitting surface of the OLED array substrate, wherein the encapsulating cover plate and the OLED array substrate are arranged oppositely, and the second auxiliary electrode is electrically coupled to the transparent second electrode of the OLED device. ### Claim 7 (depends on 6) The OLED display panel of claim 6, wherein the OLED device comprises a top-emission type OLED device. ### Claim 8 (depends on 6) The OLED display panel of claim 6, wherein an orthographic projection of the first auxiliary electrode on the second base substrate does not overlap an orthographic projection of the light emitting layer on the second base substrate. ### Claim 9 (depends on 6) The OLED display panel of claim 6, wherein the OLED array substrate comprises a plurality of OLED devices, and the plurality of OLED devices share a same transparent second electrode. ### Claim 10 A method for fabricating an encapsulating cover plate, comprising: forming a first auxiliary electrode on a first base substrate; a material of the first auxiliary electrode comprising an organic conductive polymer; and forming a second auxiliary electrode on a side of the first auxiliary electrode away from the first base substrate through an electroplating process, a material of the second auxiliary electrode comprising a conductive metal, and an orthographic projection of the second auxiliary electrode on the first base substrate being within an orthographic projection of the first auxiliary electrode on the first base substrate, wherein the orthographic of the first auxiliary electrode on the first base substrate does not overlap an orthographic projection of a first electrode of an OLED device on the first base substrate. ### Claim 11 (depends on 10) The method of claim 10, wherein the first auxiliary electrode is formed on the first base substrate through an ink-jet printing process or a transfer printing process. ### Claim 12 (depends on 10) The method of claim 10, wherein the material of the second auxiliary electrode comprises a conductive alloy. ### Claim 13 (depends on 10) The method of claim 10, wherein the organic conductive polymer comprises at least one of polyacetylene, polythiophene, polypyrrole, polyaniline, polyphenylene, or polydiacetylene. ### Claim 14 (depends on 10) The method of claim 10, wherein the material of the second auxiliary electrode comprises at least one of silver, aluminum, copper, gold, or molybdenum. ### Claim 15 (depends on 10) A method for fabricating an organic light emitting diode (OLED) display panel, comprising: fabricating an OLED array substrate, the OLED array substrate comprising a second base substrate and an OLED device on the second base substrate; the OLED device comprising a first electrode, a transparent second electrode, and a light emitting layer between the first electrode and the transparent second electrode, wherein the second transparent electrode is on a light emitting surface of the OLED array substrate; fabricating an encapsulating cover plate by using the method of claim 10; and aligning the OLED array substrate and the encapsulating cover plate to form a cell, such that the second auxiliary electrode of the encapsulating cover plate is electrically coupled to the transparent second electrode of the OLED device. ### Claim 16 (depends on 15) The method of claim 15, wherein after the OLED array substrate and the encapsulating cover plate are aligned to form the cell, an orthographic projection of the first auxiliary electrode on the second base substrate does not overlap an orthographic projection of the light emitting layer on the second base substrate. ### Claim 17 (depends on 1) The encapsulating cover plate of claim 1, wherein the organic conductive polymer comprises polyphenylene vinylene. ### Claim 18 (depends on 10) The method of claim 10, wherein the organic conductive polymer comprises polyphenylene vinylene.