# US 2022/0285407 A1 · Display panel, manufacturing method thereof and displaying device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0285407 A1 - Document ID: US20220285407A1 - Status: Published application - Kind: A1 - Application number: 17/508,895 - Filed: 2021-10-22 - Published: 2022-09-08 - Earliest claimed: 2021-03-04 - Assignees: Boe Technology Group Co., Ltd. - Applicants: BOE Technology Group Co., Ltd. - Inventors: Zunqing SONG; Hao LIU - Web page: https://patentgrep.com/patent/US20220285407A1 ## CPC - H10D 86/60: wherein the TFTs are in active matrices - G06V 40/1306: {non-optical, e.g. ultrasonic or capacitive sensing} - H10D 86/021: {of multiple TFTs} - H10D 86/451: {characterised by the compositions or shapes of the interlayer dielectrics} - H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors} - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract The disclosure provides a display panel, a manufacturing method thereof and a displaying device. The display panel comprises a plurality of display units, and each display unit has an active area for display and an induction area for identifying fingerprints. The display unit comprises a substrate, a planarization layer, a pixel unit and an induction electrode, wherein the planarization layer is arranged on the substrate and comprises a first area and a second area, the first area is opposite to the active area, and the second area is opposite to the induction area and is provided with a concave-convex structure; the pixel unit is arranged on the planarization layer and located in the first area; and the induction electrode is arranged on the planarization layer and covers a concave-convex surface of the concave-convex structure. ## Claims ### Claim 1 A display panel, comprising a plurality of display units, each of the display units having an active area for display and an induction area for identifying fingerprints, wherein the display unit comprises: a substrate; a planarization layer arranged on the substrate and comprising a first area and a second area, wherein the first area is opposite to the active area, and the second area is opposite to the induction area and is provided with a concave-convex structure; a pixel unit arranged on the planarization layer and located in the first area; and an induction electrode arranged on the planarization layer and covering a concave-convex surface of the concave-convex structure. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the concave-convex structure is a plurality of convex structures or a plurality of concave structures formed on the planarization layer. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein a cross section of the convex structure or the concave structure is polygonal, homocentric square-shaped, circular or elliptical. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein an outer contour of an orthographic projection of the induction electrode on the substrate is square. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein the induction electrode is provided with a lap hole, and the lap hole is arranged in a middle of the induction electrode. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein the induction electrode is provided with a lap hole, and the lap hole is arranged in an edge of the induction electrode. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein the display unit further comprises a first thin film transistor located in the active area and a second thin film transistor located in the induction area; the first thin film transistor is electrically connected with the pixel unit, and is configured for driving the pixel unit; and the second thin film transistor is electrically connected with the induction electrode, and is configured for driving the induction electrode. ### Claim 8 (depends on 1) A manufacturing method of the display panel according to claim 1, comprising the following steps: providing a substrate; forming a planarization layer on the substrate, wherein the planarization layer comprises a first area and a second area, the first area is opposite to an active area, the second area is opposite to an induction area, and the second area is provided with a concave-convex structure; and forming an induction electrode on a surface of the concave-convex structure. ### Claim 9 (depends on 8) The manufacturing method of the display panel according to claim 8, wherein the method for forming the planarization layer comprises: forming, by using a mask with different transmittances, the planarization layer with the concave-convex structure on the substrate. ### Claim 10 (depends on 8) The manufacturing method of the display panel according to claim 8, wherein the method for forming the planarization layer further comprises: forming, by a one halftone mask with two transmittances or a gray scale mask with three or more transmittances, the planarization layer on the substrate. ### Claim 11 (depends on 8) The manufacturing method of the display panel according to claim 8, wherein the step of forming the planarization layer on the substrate comprises: forming a first planarization layer on the substrate through a first mask with a single transmittance; and forming a second planarization layer with the concave-convex structure on the first planarization layer through a second mask with a single transmittance. ### Claim 12 (depends on 1) A displaying device, comprising the display panel according to claim 1. ### Claim 13 (depends on 12) The displaying device according to claim 12, wherein the concave-convex structure are a plurality of convex structures or a plurality of concave structures formed on the planarization layer. ### Claim 14 (depends on 13) The displaying device according to claim 13, wherein a cross section of the convex structure or the concave structure is polygonal, homocentric square-shaped, circular or elliptical. ### Claim 15 (depends on 12) The displaying device according to claim 12, wherein an outer contour of an orthographic projection of the induction electrode on the substrate is square. ### Claim 16 (depends on 12) The displaying device according to claim 12, wherein the induction electrode is provided with a lap hole, and the lap hole is arranged in a middle of the induction electrode. ### Claim 17 (depends on 12) The displaying device according to claim 12, wherein the induction electrode is provided with a lap hole, and the lap hole is arranged in an edge of the induction electrode. ### Claim 18 (depends on 12) The displaying device according to claim 12, wherein the display unit further comprises a first thin film transistor located in the active area and a second thin film transistor located in the induction area; the first thin film transistor is electrically connected with the pixel unit, and is configured for driving the pixel unit; and the second thin film transistor is electrically connected with the induction electrode, and is configured for driving the induction electrode.