# US 12,216,879 B2 · Electronic device having a digitizer with improved shielding performance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,216,879 B2 - Document ID: US12216879B2 - Status: Granted - Kind: B2 - Application number: 18/421,502 - Filed: 2024-01-24 - Published: 2024-09-26 - Granted: 2025-02-04 - Earliest claimed: 2023-03-22 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Seokwon Jang; Hirotsugu Kishimoto; Chul Ho Jeong; Hyunjae Na; Sungguk An; Youngjin Lee - Web page: https://patentgrep.com/patent/US12216879B2 ## CPC - G06F 3/046: by electromagnetic means - G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A display module including a folding area, a first non-folding area, a second non-folding area and a digitizer that is disposed under the display module and that includes a sensing part including sensing coils and a shielding part disposed under the sensing part. The shielding part includes an adhesive layer including an opening overlapping the folding area, a first shielding layer disposed inside the adhesive layer and that includes a first folding portion overlapping the folding area and a first non-folding portion overlapping the first non-folding area, a second shielding layer disposed inside the adhesive layer and including a second folding portion overlapping the folding area and a second non-folding portion overlapping the second non-folding area, and a protective layer disposed under the adhesive layer, the first folding portion and the second folding portion overlap each other and are exposed by the opening. ## Claims ### Claim 1 An electronic device comprising: a display module including a folding area folded about a folding axis and a first non-folding area and a second non-folding area spaced apart from each other with the folding area disposed therebetween; and a digitizer disposed under the display module, the digitizer including a sensing part to sense an external input and a shielding part disposed under the sensing part, wherein the sensing part includes a plurality of sensing coils, wherein the shielding part includes: an adhesive layer including an opening overlapping the folding area; a first shielding layer disposed inside the adhesive layer, the first shielding layer including a first folding portion overlapping the folding area and a first non-folding portion overlapping the first non-folding area; a second shielding layer disposed inside the adhesive layer, the second shielding layer including a second folding portion overlapping the folding area and a second non-folding portion overlapping the second non-folding area; and a protective layer disposed under the adhesive layer, wherein the first folding portion and the second folding portion overlap each other and are exposed by the opening. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein when the folding area is folded, each of the first folding portion and the second folding portion is bent with a predetermined curvature, and a part of the first folding portion and a part of the second folding portion overlap each other. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the adhesive layer includes: a first upper adhesive layer overlapping the first non-folding area and disposed between the first folding portion and the sensing part; a first lower adhesive layer overlapping the first non-folding area and disposed between the first folding portion and the protective layer; a second upper adhesive layer overlapping the second non-folding area and disposed between the second folding portion and the sensing part; and a second lower adhesive layer overlapping the second non-folding area and disposed between the second folding portion and the protective layer, and wherein the opening includes a first opening defined between the first upper adhesive layer and the second upper adhesive layer and a second opening defined between the first lower adhesive layer and the second lower adhesive layer. ### Claim 4 (depends on 3) The electronic device of claim 3, wherein when the folding area is folded, an end of the first folding portion moves away from a side surface of the second upper adhesive layer defining the first opening, and an end of the second folding portion moves away from a side surface of the first lower adhesive layer defining the second opening. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein at least one of an upper surface of the first folding portion facing the sensing part and a lower surface of the first folding portion face the second folding portion includes a first coating layer formed by performing a release coating process, and wherein at least one of an upper surface of the second folding portion facing the first folding portion and a lower surface of the second folding portion facing the protective layer includes a second coating layer formed by performing the release coating process. ### Claim 6 (depends on 1) The electronic device of claim 1, further comprising: a reinforcing layer disposed between the first shielding layer and the second shielding layer and overlapping the first non-folding area, the folding area, and the second non-folding area. ### Claim 7 (depends on 6) The electronic device of claim 6, wherein the reinforcing layer includes one of polyimide and an elastomer. ### Claim 8 (depends on 1) The electronic device of claim 1, further comprising: a first upper reinforcing layer disposed on an upper surface of the first shielding layer; a first lower reinforcing layer disposed on a lower surface of the first shielding layer; a second upper reinforcing layer disposed on an upper surface of the second shielding layer; and a second lower reinforcing layer disposed on a lower surface of the second shielding layer. ### Claim 9 (depends on 8) The electronic device of claim 8, wherein the first upper reinforcing layer, the first lower reinforcing layer, the second upper reinforcing layer, and the second lower reinforcing layer include one of polyimide and an elastomer. ### Claim 10 (depends on 1) The electronic device of claim 1, wherein the first folding portion has a smaller thickness than the first non-folding portion, and wherein the second folding portion has a smaller thickness than the second non-folding portion. ### Claim 11 (depends on 10) The electronic device of claim 10, wherein an end of the first folding portion faces a side surface of the second non-folding portion disposed adjacent to the folding area, and wherein an end of the second folding portion faces a side surface of the first non-folding portion disposed adjacent to the folding area. ### Claim 12 (depends on 11) The electronic device of claim 11, wherein the protective layer includes holes overlapping the folding area and formed through the protective layer. ### Claim 13 (depends on 1) The electronic device of claim 1, wherein the protective layer overlaps the folding area, the first non-folding area, and a portion of the second non-folding area adjacent to a boundary of the folding area, and wherein the protective layer does not overlap the remaining portion of the second non-folding area. ### Claim 14 (depends on 1) The electronic device of claim 1, wherein the first shielding layer and the second shielding layer include one of a magnetic metal powder (MMP), a ferrite, invar, a stainless steel, an Fe—Si—Al based alloy, and a Ni—Fe based alloy. ### Claim 15 (depends on 1) The electronic device of claim 1, wherein when the folding area is folded with a predetermined radius of curvature, the predetermined radius of curvature is greater than a gap between the first non-folding area and the second non-folding area. ### Claim 16 (depends on 15) The electronic device of claim 15, wherein the sensing part includes: a first non-folding part overlapping the first non-folding area; a second non-folding part overlapping the second non-folding area; and a folding part overlapping the folding area and disposed between the first non-folding part and the second non-folding part, the folding part including holes formed through at least a portion of the folding part. ### Claim 17 (depends on 15) The electronic device of claim 15, wherein the sensing part includes: a first sensing part overlapping the first non-folding area and a portion of the folding area; and a second sensing part overlapping the second non-folding area and a portion of the folding area, wherein the first sensing part and the second sensing part are spaced apart from each other in the folding area. ### Claim 18 (depends on 16) The electronic device of claim 16, further comprising: an upper plate disposed between the display module and the digitizer, the upper plate having holes defined therein to overlap the folding area. ### Claim 19 (depends on 1) The electronic device of claim 1, wherein the protective layer includes one of a stainless steel, a polyimide, and an elastomer. ### Claim 20 (depends on 1) The electronic device of claim 1, wherein the digitizer senses the external input in an electromagnetic resonance (EMR) type.