# US 10,310,644 B2 · Digitizer circuit patterning method and electronic device supporting the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,310,644 B2 - Document ID: US10310644B2 - Status: Granted - Kind: B2 - Application number: 15/064,012 - Filed: 2016-03-08 - Published: 2016-09-15 - Granted: 2019-06-04 - Earliest claimed: 2015-03-13 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Che Uk Park - Web page: https://patentgrep.com/patent/US10310644B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes} - B32B 3/02: characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)} - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 15/08: of synthetic resin - B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)} - B32B 27/281: {comprising polyimides} - G06F 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality} - G06F 3/046: by electromagnetic means - G06F 3/047: using sets of wires, e.g. crossed wires - H10K 59/40: OLEDs integrated with touch screens - B32B 2307/202: Conductive - B32B 2307/206: Insulating - B32B 2307/416: Reflective - B32B 2457/208: Touch screens - G06F 2203/04106: Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection - G06F 2203/04108: Touchless 2D- digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface without distance measurement in the Z direction - G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An electronic device is provided. The electronic device includes a reflector sheet disposed under a display panel and a digitizer disposed under the reflector sheet. The digitizer may include a first circuit layer including a conductive circuit pattern arranged in a first direction, a second circuit layer including a conductive circuit pattern arranged in a second direction, and an insulating layer electrically isolating the first circuit layer and the second circuit layer. The digitizer further includes at least one dummy circuit pattern formed on at least one of the first circuit layer or the second circuit layer. ## Claims ### Claim 1 An electronic device comprising: a reflector sheet disposed under a display panel; and a digitizer disposed under the reflector sheet, wherein the digitizer comprises: a first circuit layer comprising a conductive circuit pattern arranged in a first direction; a second circuit layer comprising a conductive circuit pattern arranged in a second direction; an insulating layer electrically isolating the first circuit layer and the second circuit layer; and at least one dummy circuit pattern formed on at least one of the first circuit layer or the second circuit layer, wherein the at least one dummy circuit pattern is electrically isolated, and wherein the at least one dummy circuit pattern is based on a composition of the reflector sheet. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein conductive circuits constituting the conductive circuit pattern form a loop, and wherein dummy circuits constituting the at least one dummy circuit pattern do not form a loop. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein at least one of a height or a thickness of dummy circuits constituting the at least one dummy circuit pattern and at least one of a height or a thickness of conductive circuits constituting the conductive circuit pattern are the same as each other or have a difference within a specific tolerance range. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein dummy circuits constituting the at least one dummy circuit pattern are spaced from conductive circuits constituting the conductive circuit pattern by a specific interval. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein dummy circuits constituting the at least one dummy circuit pattern are formed such that an interval between adjacent two dummy lines constituting the dummy circuits and an interval between a specific dummy circuit pattern and a specific conductive circuit pattern are the same as each other or have a difference within a specific tolerance range. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein dummy circuits constituting the at least one dummy circuit pattern are formed such that an interval between adjacent two dummy lines constituting the dummy circuits and an interval between adjacent two circuit lines corresponding to conductive circuits constituting the conductive circuit pattern are the same as each other or have a difference within a specific tolerance range. ### Claim 7 (depends on 1) The electronic device of claim 1, wherein the conductive circuit pattern is formed such that at least one straight line shaped circuit line of an ordinate or abscissa direction is repeated at regular intervals, and wherein the at least one dummy circuit pattern is formed such that at least one straight line shaped dummy line of a same direction as the circuit line is repeated at regular intervals. ### Claim 8 (depends on 1) The electronic device of claim 1, wherein the conductive circuit pattern: has at least one shape, and is repeated at regular intervals, and wherein the at least one dummy circuit pattern is formed such that at least one dummy circuit is repeated at regular intervals in an area corresponding to the at least one shape. ### Claim 9 (depends on 8) The electronic device of claim 8, wherein each of dummy lines corresponding to dummy circuits constituting the at least one dummy circuit pattern is a bending line bent at least once, and wherein at least one is bent in a same direction or in an opposite direction so as to surround each other. ### Claim 10 (depends on 8) The electronic device of claim 8, wherein at least one dummy line corresponding to the at least one dummy circuit pattern is a bending line bent at least once and at least one of the others thereof is a straight line, and wherein the straight line is formed in parallel with at least one side of the bending line. ### Claim 11 (depends on 8) The electronic device of claim 8, wherein dummy lines corresponding to dummy circuits constituting the at least one dummy circuit pattern are: a straight line, and arranged in parallel with at least one side of the at least one shape. ### Claim 12 (depends on 1) The electronic device of claim 1, wherein no current flows through dummy circuits constituting the at least one dummy circuit pattern. ### Claim 13 An electronic device comprising: a case; a display panel disposed in the case; a reflector sheet disposed under the display panel; and a digitizer disposed between the case and the reflector sheet, wherein the digitizer comprises: a first circuit layer comprising a conductive circuit pattern arranged in a first direction; a second circuit layer comprising a conductive circuit pattern arranged in a second direction; an insulating layer electrically isolating the first circuit layer and the second circuit layer; and at least one dummy circuit which is formed on at least one of the first circuit layer or the second circuit layer, the at least one dummy circuit having a dummy circuit pattern, wherein the at least one dummy circuit is repeated to be spaced from conductive circuits constituting the conductive circuit pattern by a regular interval, wherein the at least one dummy circuit is electrically isolated, and wherein the dummy circuit pattern is based on a composition of the reflector sheet. ### Claim 14 An electronic device comprising: a reflector sheet disposed under a display panel; and a digitizer disposed under the reflector sheet, wherein the digitizer comprises: an insulating layer, and at least one circuit layer formed on at least one surface of the insulating layer, wherein the circuit layer comprises: a conductive circuit pattern, and a dummy circuit pattern, wherein the dummy circuit pattern is electrically isolated, and wherein the dummy circuit pattern is based on a composition of the reflector sheet. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein the conductive circuit pattern and the dummy circuit pattern are formed on a surface adjacent to the reflector sheet. ### Claim 16 (depends on 14) The electronic device of claim 14, wherein no current flows through dummy circuits constituting the dummy circuit pattern.