# US 2019/0171334 A1 · Electronic device and terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0171334 A1 - Document ID: US20190171334A1 - Status: Published application - Kind: A1 - Application number: 16/314,418 - Filed: 2016-06-30 - Published: 2019-06-06 - Earliest claimed: 2016-06-30 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Dongli WANG; Xiaoyan YU; Jiang LIU; Ziqian DING - Web page: https://patentgrep.com/patent/US20190171334A1 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 1/1626: {with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 3/04144: {using an array of force sensing means (position sensing using the local deformation of sensor cells G06F3/0447)} - H10K 59/40: OLEDs integrated with touch screens - 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 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract An electronic device includes: a foam is located below an OLED display, and a film is located below the foam. Multiple bridge circuits are disposed on the film. Each bridge circuit includes two parallel branches. A first branch includes a first and a third resistor. A second branch includes a second and a fourth resistor. At least one of the four resistors is bonded to the foam. At least one resistor is not bonded to the foam. The resistor that is bonded to the foam is made from a first material. A strain sensitivity coefficient of the first material is greater than 100. A film area in which the resistor that is bonded to the foam is located is covered by a second material. A Young's modulus of the second material is greater than 30. ## Claims ### Claim 1 An electronic device, wherein the electronic device comprises an organic light-emitting diode OLED display, foam, and a film, wherein the foam is located below the OLED display, and the film is located below the foam; multiple bridge circuits are disposed on the film, each bridge circuit comprises a first branch and a second branch, and the first branch is connected in parallel to the second branch, wherein the first branch comprises a first resistor and a third resistor, the second branch comprises a second resistor and a fourth resistor, a first end of the first resistor is connected to a first end of the second resistor, a second end of the first resistor is connected to a first end of the third resistor, a second end of the second resistor is connected to a first end of the fourth resistor, and a second end of the third resistor is connected to a second end of the fourth resistor, and the multiple bridge circuits are located on a same side of the film; at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the foam, and at least one resistor is not bonded to the foam, wherein the resistor that is bonded to the foam is made from a first material, and a strain sensitivity coefficient of the first material is greater than 100; and a film area in which the resistor that is bonded to the foam is located is covered by a second material, and a film area in which the resistor that is not bonded to the foam is located is not covered by the second material, wherein a Young's modulus of the second material is greater than 30. ### Claim 2 (depends on 1) The electronic device according to claim 1, wherein that at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the foam, and at least one resistor is not bonded to the foam, wherein the resistor that is bonded to the foam is made from a first material is specifically: the second resistor and the third resistor are bonded to the foam, and are made from the first material, and the first resistor and the fourth resistor are not bonded to the foam; and that a film area in which the resistor that is bonded to the foam is located is covered by a second material, and a film area in which the resistor that is not bonded to the foam is located is not covered by the second material is specifically: film areas in which the second resistor and the third resistor are located are covered by the second material, and film areas in which the first resistor and the fourth resistor are located are not covered by the second material. ### Claim 3 (depends on 1) The electronic device according to claim 1, wherein that at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the foam, and at least one resistor is not bonded to the foam, wherein the resistor that is bonded to the foam is made from a first material is specifically: the second resistor is bonded to the foam, and is made from the first material, and the first resistor, the third resistor, and the fourth resistor are not bonded to the foam; and that a film area in which the resistor that is bonded to the foam is located is covered by a second material, and a film area in which the resistor that is not bonded to the foam is located is not covered by the second material is specifically: a film area in which the second resistor is located is covered by the second material, and film areas in which the first resistor, the third resistor, and the fourth resistor are located are not covered by the second material. ### Claim 4 (depends on 1) The electronic device according to claim 1, wherein some film areas near the resistor that is not bonded to the foam are slotted or hollowed out. ### Claim 5 (depends on 1) The electronic device according to claim 1, wherein a film area near the resistor that is not bonded to the foam is not covered by the second material. ### Claim 6 (depends on 1) The electronic device according to claim 1, wherein the resistor that is not bonded to the foam is made from the first material. ### Claim 7 An electronic device, wherein the electronic device comprises a display and a film, wherein the film is located below the display; multiple bridge circuits are disposed on the film, each bridge circuit comprises a first branch and a second branch, and the first branch is connected in parallel to the second branch, wherein the first branch comprises a first resistor and a third resistor, the second branch comprises a second resistor and a fourth resistor, a first end of the first resistor is connected to a first end of the second resistor, a second end of the first resistor is connected to a first end of the third resistor, a second end of the second resistor is connected to a first end of the fourth resistor, and a second end of the third resistor is connected to a second end of the fourth resistor, and the multiple bridge circuits are located on a same side of the film; at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the display, and at least one resistor is not bonded to the display, wherein the resistor that is bonded to the display is made from a first material, and a strain sensitivity coefficient of the first material is greater than 100; and some film areas near the resistor that is not boned to the display are slotted or hollowed out. ### Claim 8 (depends on 7) The electronic device according to claim 7, wherein that at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the display, and at least one resistor is not bonded to the display, wherein the resistor that is bonded to the display is made from a first material is specifically: the second resistor and the third resistor are bonded to the display, and are made from the first material, and the first resistor and the fourth resistor are not bonded to the display; and that some film areas near the resistor that is not boned to the display are slotted or hollowed out is specifically: some film areas near the first resistor and the fourth resistor are slotted or hollowed out. ### Claim 9 (depends on 7) The electronic device according to claim 7, wherein that at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the display, and at least one resistor is not bonded to the display, wherein the resistor that is bonded to the display is made from a first material is specifically: the second resistor is bonded to the display, and is made from the first material, and the first resistor, the third resistor, and the fourth resistor are not bonded to the display; and that some film areas near the resistor that is not boned to the display are slotted or hollowed out is specifically: some film areas near the first resistor, the third resistor, and the fourth resistor are slotted or hollowed out. ### Claim 10 (depends on 7) The electronic device according to claim 7, wherein a film area in which the resistor that is bonded to the display is located is covered by a second material, and a film area in which the resistor that is not bonded to the display is located is not covered by the second material, wherein a Young's modulus of the second material is greater than 30. ### Claim 11 (depends on 10) The electronic device according to claim 10, wherein a film area near the resistor that is not bonded to the display is not covered by the second material. ### Claim 12 (depends on 7) The electronic device according to claim 7, wherein the resistor that is not bonded to the display is made from the first material. ### Claim 13 A mobile terminal, wherein the mobile terminal comprises: a power supply, and an electronic device, wherein the electronic device comprises an organic light-emitting diode OLED display, foam, and a film; the foam is located below the OLED display, and the film is located below the foam; multiple bridge circuits are disposed on the film, each bridge circuit comprises a first branch and a second branch, and the first branch is connected in parallel to the second branch, wherein the first branch comprises a first resistor and a third resistor, the second branch comprises a second resistor and a fourth resistor, a first end of the first resistor is connected to a first end of the second resistor, a second end of the first resistor is connected to a first end of the third resistor, a second end of the second resistor is connected to a first end of the fourth resistor, and a second end of the third resistor is connected to a second end of the fourth resistor, and the multiple bridge circuits are located on a same side of the film; at least one of the first resistor, the second resistor, the third resistor, or the fourth resistor is bonded to the foam, and at least one resistor is not bonded to the foam, wherein the resistor that is bonded to the foam is made from a first material, and a strain sensitivity coefficient of the first material is greater than 100; and a film area in which the resistor that is bonded to the foam is located is covered by a second material, and a film area in which the resistor that is not bonded to the foam is located is not covered by the second material, wherein a Young's modulus of the second material is greater than 30; wherein the power supply supplies power to the each bridge circuit in the electronic device; and in the each bridge circuit, a first end of the power supply is connected to the first end of the first resistor, and a second end of the power supply is connected to the second end of the third resistor.