# US 12,218,148 B2 · Display module having glass substrate formed with side wirings and method for manufacturing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,218,148 B2 - Document ID: US12218148B2 - Status: Granted - Kind: B2 - Application number: 17/512,126 - Filed: 2021-10-27 - Published: 2022-02-17 - Granted: 2025-02-04 - Earliest claimed: 2020-05-08 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Jeongyun Kim; Hosuk Kang; Jinwoo Jung; Changjoon Lee; Tackmo Lee; Gyun Heo; Soonmin Hong - Web page: https://patentgrep.com/patent/US12218148B2 ## CPC - H10D 86/60: wherein the TFTs are in active matrices - H10D 86/0212: {comprising manufacture, treatment or coating of substrates} - H10D 86/441: {Interconnections, e.g. scanning lines} - H10H 29/10: Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00 (active-matrix LED displays H10H29/30) - H10W 90/00: Package configurations - H10D 86/411: {characterised by materials, geometry or structure of the substrates} - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 72/90: Bond pads, in general - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - 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 Provided is a display module including a glass substrate, a thin film transistor (TFT) layer provided on a front surface of the glass substrate, a driving circuit provided on a rear surface of the glass substrate and configured to drive the TFT layer, a plurality of light emitting diodes (LED) electrically connected to the TFT layer, a plurality of first connection pads provided at intervals in a portion of the front surface of the glass substrate and electrically connected to a TFT circuit provided in in the TFT layer, a plurality of second connection pads provided at intervals in a portion of the rear surface of the glass substrate and electrically connected to the driving circuit, and a plurality of side wirings extending from the lateral surface of the glass substrate to a portion of an insulating layer and extending to another portion of the insulating layer. ## Claims ### Claim 1 A display module comprising: a glass substrate; a thin film transistor (TFT) layer provided on a front surface of the glass substrate; a driving circuit provided on a rear surface of the glass substrate, the driving circuit being configured to drive the TFT layer; a plurality of light emitting diodes (LED) electrically connected to the TFT layer; a plurality of first connection pads provided at intervals in a portion of the front surface of the glass substrate that is adjacent to a lateral surface of the glass substrate, the plurality of first connection pads being electrically connected to a TFT circuit provided in the TFT layer through a plurality of first wirings; a plurality of second connection pads provided at intervals in a portion of the rear surface of the glass substrate adjacent to the lateral surface of the glass substrate, the plurality of second connection pads being electrically connected to the driving circuit through a plurality of second wirings; and a plurality of side wirings extending from the lateral surface of the glass substrate to a portion of an insulating layer by passing the first connection pads and extending to another portion of the insulating layer by passing the second connection pads, wherein the first connection pads have an uneven portion. ### Claim 2 (depends on 1) The display module of claim 1, wherein the insulating layer is an organic insulating film or an inorganic insulating film provided on the front surface of the glass substrate and the rear surface of the glass substrate. ### Claim 3 (depends on 1) The display module as claimed in claim 1, wherein the insulating layer comprises: a first insulating layer provided on the front surface of the glass substrate; and a second insulating layer provided on the rear surface of the glass substrate. ### Claim 4 (depends on 3) The display module of claim 3, wherein the first insulating layer is spaced apart from the first connection pads, and the second insulating layer is spaced apart from the second connection pads. ### Claim 5 (depends on 3) The display module of claim 3, wherein the first insulating layer is provided on a portion of the first connection pads. ### Claim 6 (depends on 3) The display module as claimed in claim 3, wherein the second insulating layer is provided on a portion of the second connection pads. ### Claim 7 (depends on 1) The display module of claim 1, wherein the portion of the front surface of the glass substrate that is adjacent to the lateral surface of the glass substrate has an uneven portion, and wherein the first connection pads and one end of the side wirings that are sequentially stacked on the uneven portion of the glass substrate have an uneven shape. ### Claim 8 (depends on 1) The display module of claim 1, wherein one end of the side wirings stacked on the uneven portion of the first connection pads have an uneven shape. ### Claim 9 (depends on 1) The display module of claim 1, further comprising a via structure formed of an insulating material is provided on the first connection pads, wherein a portion of the side wirings provided on the via structure has an uneven shape and is electrically connected to the first connection pads. ### Claim 10 (depends on 1) The display module of claim 1, wherein the glass substrate comprises an edge area comprising a first edge zone corresponding to a side surface of the glass substrate, a second edge zone corresponding to a portion of the front surface adjacent to the side surface, and a third edge zone corresponding to a portion of the rear surface adjacent to the side surface, wherein the plurality of side wirings are provided at predetermined intervals, and wherein each side wiring among the plurality of side wirings is configured such that a width of a first portion formed in the first edge zone is larger than a width of a second portion formed in the second edge zone and a width of a third portion formed in the third edge zone. ### Claim 11 (depends on 10) The display module of claim 10, wherein an interval between the first portions of adjacent side wirings is smaller than a width of each of the second portions and the third portions. ### Claim 12 (depends on 10) The display module of claim 10, wherein an interval between the first portions of adjacent side wirings is smaller than an interval between the second portions of the adjacent side wirings and an interval between the third portions of the adjacent side wirings. ### Claim 13 (depends on 10) The display module of claim 10, wherein the first portion of the side wirings comprise a first section extending from a point connected to the second portions to a first predetermined distance away from the second portion and a second section extending from a point connected to the third portion to a second predetermined distance away from the third portion. ### Claim 14 (depends on 13) The display module of claim 13, wherein the first portion of the side wirings comprises a third section with a predetermined width provided between the first section and the second section. ### Claim 15 (depends on 10) The display module of claim 10, wherein the first edge zone of the glass substrate comprises a trench increasing a planar distance of the first portions of adjacent side wirings, wherein the glass substrate further comprises an insulating member coupled along the trench, and wherein the insulating member protrudes higher than the first portions of the adjacent side wirings from the side surface of the glass substrate. ### Claim 16 A display module comprising: a glass substrate; a thin-film-transistor (TFT) layer provided on a front surface of the glass substrate; a driving circuit provided on a rear surface of the glass substrate, the driving circuit being configured to drive the TFT layer; light emitting diodes (LEDs) electrically connected to the TFT layer; first connection pads electrically connected to a TFT circuit provided on the TFT layer provided on a portion of the front surface of the glass substrate that is adjacent to a lateral surface of the glass substrate; second connection pads electrically connected to the driving circuit provided on a portion of the rear surface of the glass substrate adjacent to the lateral surface of the glass substrate; side wirings provided on the first connection pads and the second connection pads, the side wirings being configured to electrically connect the first connection pads and the second connection pads; a first insulating layer provided on the front surface of the glass substrate; and a second insulating layer provided on the rear surface of the glass substrate, wherein the side wirings extend to a portion of the first insulating layer or a portion of the second insulating layer, and wherein the first connection pads or the second connection pads have an uneven portion. ### Claim 17 (depends on 16) The display module as claimed in claim 16, wherein a portion of the side wirings is provided on the uneven portion. ### Claim 18 (depends on 16) The display module as claimed in claim 16, wherein a portion of the front surface of the glass substrate or a portion of the rear surface of the glass substrate has an uneven portion, and wherein a portion of the side wirings is provided on the uneven portion of the glass substrate. ### Claim 19 (depends on 16) The display module as claimed in claim 16, wherein a via structure formed of an insulating material is provided on the first connection pads, and wherein a portion of the side wirings provided on the via structure has an uneven shape corresponding to the via structure. ### Claim 20 (depends on 16) The display module as claimed in claim 16, wherein the first connection pads, the second connection pads, and the side wirings are provided at predetermined intervals, and wherein each side wiring among the side wirings is configured such that a width of first portions provided on the lateral surface of the glass substrate is larger than a width of second portions provided on the front surface of the glass substrate and a width of third portions provided on the rear surface of the glass substrate.