# US 10,770,534 B2 · Active matrix organic light-emitting diode display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,770,534 B2 - Document ID: US10770534B2 - Status: Granted - Kind: B2 - Application number: 16/325,399 - Filed: 2018-10-12 - Published: 2020-04-23 - Granted: 2020-09-08 - Earliest claimed: 2018-05-30 - Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. - Inventors: Caiqin Chen - Web page: https://patentgrep.com/patent/US10770534B2 ## CPC - H10D 86/441: {Interconnections, e.g. scanning lines} - H10D 86/021: {of multiple TFTs} - H10D 86/451: {characterised by the compositions or shapes of the interlayer dielectrics} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/8051: {Anodes} - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An active matrix organic light-emitting diode display panel is provided and includes a first metal layer, an interlayer dielectric layer, a second metal layer, a planarization layer and a transparent conductive layer sequentially located on a substrate. Second via holes are defined in the planarization layer. The transparent conductive layer is connected to the second metal layer through the second via holes. A contact surface of the second metal layer and the transparent conductive layer is a waved surface. ## Claims ### Claim 1 An active matrix organic light-emitting diode display panel, comprising: a first metal layer and an interlayer dielectric layer sequentially disposed on a substrate; wherein a first via hole is defined in the interlayer dielectric layer, and the first metal layer is connected to a portion of a second metal layer through the first via hole; the second metal layer covering the first via hole; a planarization layer located on the second metal layer, and a second via hole defined the planarization layer; and a transparent conductive layer covering the second via hole and located on a portion of the planarization layer, the transparent conductive layer connected to the second metal layer through the second via hole; wherein a contact surface of the second metal layer and the transparent conductive layer is a waved surface. ### Claim 2 (depends on 1) The active matrix organic light-emitting diode display panel as claimed in claim 1, wherein at least one fourth via hole is defined in the second metal layer, and a portion of the transparent conductive layer is connected to a portion of the first metal layer through the at least one fourth via hole; and the transparent conductive layer covers the second via hole and the at least one fourth via hole, and is located on the planarization layer. ### Claim 3 (depends on 1) The active matrix organic light-emitting diode display panel as claimed in claim 1, wherein the active matrix organic light-emitting diode display panel further comprises: a buffer layer located between the substrate and the first metal layer; a first insulating layer located between the buffer layer and the first metal layer; and a second insulating layer located between the first metal layer and the interlayer dielectric layer. ### Claim 4 (depends on 1) The active matrix organic light-emitting diode display panel as claimed in claim 1, wherein the active matrix organic light-emitting diode display panel further comprises: a pixel definition layer located on the transparent conductive layer and a portion of the planarization layer not covered by the transparent conductive layer. ### Claim 5 (depends on 1) The active matrix organic light-emitting diode display panel as claimed in claim 1, wherein the active matrix organic light-emitting diode display panel further comprises: a first insulating layer located between the substrate and the first metal layer; and at least one third via hole defined in the first metal layer, wherein the first insulating layer is connected to a portion of the second metal layer through the at least one third via hole. ### Claim 6 (depends on 5) The active matrix organic light-emitting diode display panel as claimed in claim 5, wherein the second metal layer covers the at least one third via hole and the first via hole. ### Claim 7 (depends on 1) The active matrix organic light-emitting diode display panel as claimed in claim 1, wherein two or more first via holes are defined in the interlayer dielectric layer at intervals. ### Claim 8 (depends on 7) The active matrix organic light-emitting diode display panel as claimed in claim 7, wherein the transparent conductive layer covers a portion of the second metal layer at a corresponding interval, and the portion of the second metal layer at the corresponding interval is the portion of the second metal layer on a portion of the interlayer dielectric layer on an adjacent portion between adjacent two of the first via holes. ### Claim 9 (depends on 7) The active matrix organic light-emitting diode display panel as claimed in claim 7, wherein the transparent conductive layer fully covers the second metal layer at a corresponding interval, and the portion of the second metal layer at the corresponding interval is the portion of the second metal layer on a portion of the interlayer dielectric layer on an adjacent portion between adjacent two of the first via holes. ### Claim 10 (depends on 7) The active matrix organic light-emitting diode display panel as claimed in claim 7, wherein the pixel definition layer covers the transparent conductive layer, a portion of the second metal layer not covered by the transparent conductive layer and a portion of the planarization layer not covered by the transparent conductive layer. ### Claim 11 An active matrix organic light-emitting diode display panel, comprising: a first metal layer and an interlayer dielectric layer sequentially disposed on a substrate; wherein two or more first via holes are defined in the interlayer dielectric layer at intervals, and the first metal layer is connected to a portion of a second metal layer through the first via holes; the second metal layer covering the first via holes; a planarization layer located on the second metal layer, and second via holes defined in the planarization layer; a transparent conductive layer covering the second via holes and located on a portion of the planarization layer, the transparent conductive layer connected to the second metal layer through the second via holes; wherein a contact surface of the second metal layer and the transparent conductive layer is a waved surface; and a pixel definition layer located on the transparent conductive layer and located on a portion of planarization layer that is not covered by the transparent conductive layer. ### Claim 12 (depends on 11) The active matrix organic light-emitting diode display panel as claimed in claim 11, wherein at least one fourth via hole is defined in the second metal layer, and a portion of the transparent conductive layer is connected to a portion of the first metal layer through the at least one fourth via hole; and the transparent conductive layer covers the second via holes and the at least one fourth via hole, and is located on the planarization layer. ### Claim 13 (depends on 11) The active matrix organic light-emitting diode display panel as claimed in claim 11, wherein the active matrix organic light-emitting diode display panel further comprises: a buffer layer located between the substrate and the first metal layer; a first insulating layer located between the buffer layer and the first metal layer; and a second insulating layer located between the first metal layer and the interlayer dielectric layer. ### Claim 14 (depends on 11) The active matrix organic light-emitting diode display panel as claimed in claim 11, wherein the transparent conductive layer covers a portion of the second metal layer at a corresponding interval, and the portion of the second metal layer at the corresponding interval is the portion of the second metal layer on a portion of the interlayer dielectric layer on an adjacent portion between adjacent two of the first via holes. ### Claim 15 (depends on 11) The active matrix organic light-emitting diode display panel as claimed in claim 11, wherein the transparent conductive layer fully covers the second metal layer at a corresponding interval, and the portion of the second metal layer at the corresponding interval is the portion of the second metal layer on a portion of the interlayer dielectric layer on an adjacent portion of adjacent two of the first via holes. ### Claim 16 (depends on 11) The active matrix organic light-emitting diode display panel as claimed in claim 11, wherein the pixel definition layer covers the transparent conductive layer, a portion of the second metal layer not covered by the transparent conductive layer and a portion of the planarization layer not covered by the transparent conductive layer. ### Claim 17 (depends on 11) The active matrix organic light-emitting diode display panel as claimed in claim 11, wherein the active matrix organic light-emitting diode display panel further comprises a first insulating layer located between the substrate and the first metal layer; and at least one third via hole is defined in the first metal layer, and the first insulating layer is connected to a portion of the second metal layer through the at least one third via hole. ### Claim 18 (depends on 17) The active matrix organic light-emitting diode display panel as claimed in claim 17, wherein the second metal layer covers the at least one third via hole and the first via holes.