# US 9,519,166 B2 · Circuit substrate, display panel and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,519,166 B2 - Document ID: US9519166B2 - Status: Granted - Kind: B2 - Application number: 14/469,559 - Filed: 2014-08-26 - Published: 2015-12-17 - Granted: 2016-12-13 - Earliest claimed: 2014-06-13 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Heecheol Kim; Youngsuk Song; Seongyeol Yoo; Seungjin Choi - Web page: https://patentgrep.com/patent/US9519166B2 ## CPC - G02F 1/133: Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements (arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36) - H05K 1/119: {Details of rigid insulating substrates therefor, e.g. three-dimensional details (H05K1/117 takes precedence)} - H05K 3/361: {Assembling flexible printed circuits with other printed circuits} - G02F 1/1303: {Apparatus specially adapted to the manufacture of LCDs} - H05K 2201/09045: Locally raised area or protrusion of insulating substrate - H05K 2203/0278: Flat pressure, e.g. for connecting terminals with anisotropic conductive adhesive - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract This disclosure provides a circuit substrate, a display panel and a display device for solving the problem of a relatively large electrode pitch of the circuit substrate in the prior art while reducing the production cost. Wherein the circuit substrate comprises a substrate, a plurality of first electrodes arranged on the substrate, and insulating convex structures arranged between the substrate and the first electrodes, the convex structure comprising a top face and a bottom face, wherein the top face contacts with the first electrode, and the bottom face contacts with the substrate. ## Claims ### Claim 1 A circuit substrate comprising a substrate and a plurality of first electrodes arranged on the substrate, wherein the circuit substrate further comprises insulating convex structures arranged between the substrate and the first electrodes, the convex structure comprising a top face and a bottom face, wherein the top face contacts with the first electrode, and the bottom face contacts with the substrate, wherein the first electrodes can be in direct contact with second electrodes arranged on a flexible circuit board located on the circuit substrate. ### Claim 2 (depends on 1) The circuit substrate as claimed in claim 1, wherein the convex structure has a height of 1-2 μm in a direction perpendicular to the substrate. ### Claim 3 (depends on 1) The circuit substrate as claimed in claim 1, wherein the shape of the top face of the convex structure matches with the shape of the first electrode. ### Claim 4 (depends on 1) The circuit substrate as claimed in claim 1, wherein the bottom faces of the convex structures are connected with one another and cover the substrate. ### Claim 5 (depends on 1) The circuit substrate as claimed in claim 1, wherein the area of the top face of the convex structure is smaller than the area of the bottom face of the convex structure. ### Claim 6 (depends on 5) The circuit substrate as claimed in claim 5, wherein the section plane of the convex structure in a direction perpendicular to the extending direction of the first electrode and perpendicular to the substrate is in the shape of a trapezoid. ### Claim 7 (depends on 1) The circuit substrate as claimed in claim 1, wherein the convex structure is made of a resin material. ### Claim 8 A display panel comprising a circuit substrate and a flexible circuit board located on the circuit substrate, wherein the circuit substrate comprises a substrate and a plurality of first electrodes arranged on the substrate, wherein the circuit substrate further comprises insulating convex structures arranged between the substrate and the first electrodes, the convex structure comprising a top face and a bottom face, wherein the top face contacts with the first electrode, and the bottom face contacts with the substrate, and wherein the first electrodes arranged on the circuit substrate are in direct contact with second electrodes arranged on the flexible circuit board. ### Claim 9 (depends on 8) The display panel as claimed in claim 8, wherein the convex structure has a height of 1-2 μm in a direction perpendicular to the substrate. ### Claim 10 (depends on 8) The display panel as claimed in claim 8, wherein the shape of the top face of the convex structure matches with the shape of the first electrode. ### Claim 11 (depends on 8) The display panel as claimed in claim 8, wherein the bottom faces of the convex structures are connected with one another and cover the substrate. ### Claim 12 (depends on 8) The display panel as claimed in claim 8, wherein the convex structure is made of a resin material. ### Claim 13 (depends on 8) The display panel as claimed in claim 8, wherein the area of the top face of the convex structure is smaller than the area of the bottom face of the convex structure. ### Claim 14 (depends on 13) The display panel as claimed in claim 13, wherein the section plane of the convex structure in a direction perpendicular to the extending direction of the first electrode and perpendicular to the substrate is in the shape of a trapezoid. ### Claim 15 (depends on 14) The display panel as claimed in claim 14, wherein the flexible circuit board is provided with second electrodes corresponding to each of the first electrodes respectively, wherein the side of the trapezoid that contacts with the first electrode is a top side of the trapezoid, the side of the trapezoid that contacts with the substrate is a bottom side of the trapezoid; the width of the top side of the trapezoid is not larger than a spacing distance between two adjacent second electrodes; the width of the bottom side of the trapezoid is equal to a distance between the same positions of two adjacent second electrodes. ### Claim 16 A display device comprising a display panel which comprises a circuit substrate and a flexible circuit board located on the circuit substrate, wherein the circuit substrate comprises a substrate and a plurality of first electrodes arranged on the substrate, wherein the circuit substrate further comprises insulating convex structures arranged between the substrate and the first electrodes, the convex structure comprising a top face and a bottom face, wherein the top face contacts with the first electrode, and the bottom face contacts with the substrate, and wherein the first electrodes arranged on the circuit substrate are in direct contact with second electrodes arranged on the flexible circuit board. ### Claim 17 (depends on 16) The display device as claimed in claim 16, wherein the section plane of the convex structure in a direction perpendicular to the extending direction of the first electrode and perpendicular to the substrate is in the shape of a trapezoid. ### Claim 18 (depends on 17) The display device as claimed in claim 17, wherein the flexible circuit board is provided with second electrodes corresponding to each of the first electrodes respectively, wherein the side of the trapezoid that contacts with the first electrode is a top side of the trapezoid, and the side of the trapezoid that contacts with the substrate is a bottom side of the trapezoid; the width of the top side of the trapezoid is not larger than a spacing distance between two adjacent second electrodes; the width of the bottom side of the trapezoid is equal to a distance between the same positions of two adjacent second electrodes.