# US 10,372,277 B2 · Triboelectric device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,372,277 B2 - Document ID: US10372277B2 - Status: Granted - Kind: B2 - Application number: 15/403,491 - Filed: 2017-01-11 - Published: 2018-01-25 - Granted: 2019-08-06 - Earliest claimed: 2016-07-25 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Kyung-Eun Byun; Jae-Young Kim; Hyeonjin Shin; Alum Jung - Web page: https://patentgrep.com/patent/US10372277B2 ## CPC - G02F 1/167: by electrophoresis - G02F 1/0136: {for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation (G02F1/0353 takes precedence)} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - H02N 1/04: Friction generators - 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 - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H02N: ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ## Abstract Example embodiments relate to a triboelectric device including first and second electrodes that are spaced apart from each other, a charging layer provided on the first electrode, a display layer, which is provided between the first and second electrodes, configured to implement an image according to a change in an electric field between the first and second electrodes, and a charging member charged with an opposite polarity to the polarity of the charging layer by contacting the charging layer, wherein the triboelectric device is configured to implement the image according to the change in the electric field between the first and second electrodes in a contact area of the charging member and the charging layer. ## Claims ### Claim 1 A triboelectric device comprising: a first electrode and a second electrode spaced apart from each other; a charging layer on the first electrode; a display layer between the first and second electrodes, the display layer being configured to implement an image according to a change in an electric field between the first and second electrodes; and a charging member configured to be charged with an opposite polarity to a polarity of the charging layer when contacting the charging layer, wherein the triboelectric device is configured to implement the image according to the change in the electric field between the first and second electrodes without external power supply when the charging member contacts the charging layer and the charging member and the charging layer are charged with opposite polarities to each other in a contact area of the charging member and the charging layer, wherein the second electrode is positioned below the first electrode such that the electric field is formed vertically to the charging layer. ### Claim 2 (depends on 1) The triboelectric device of claim 1, wherein the display layer includes a plurality of micro capsules between the first and second electrodes, and each of the micro capsules includes a plurality of first and second particles, wherein one of the first and second particles has a charge of opposite polarity to a polarity of another one of the first and second particles. ### Claim 3 (depends on 2) The triboelectric device of claim 2, wherein the first and second particles are configured to move according to the change in the electric field between the first and second electrodes in the contact area of the charging member and the charging layer in order to implement the image. ### Claim 4 (depends on 3) The triboelectric device of claim 3, wherein the first and second particles have black and white colors, respectively. ### Claim 5 (depends on 2) The triboelectric device of claim 2, wherein the first electrode comprises a plurality of first pixel electrodes and a plurality of second pixel electrodes, and the first and second pixel electrodes are spaced apart from each other. ### Claim 6 (depends on 5) The triboelectric device of claim 5, wherein the first electrode further comprises at least one spacer between the plurality of first pixel electrodes and the plurality of second pixel electrodes. ### Claim 7 (depends on 5) The triboelectric device of claim 5, wherein the plurality of first pixel electrodes and the plurality of second pixel electrodes facing each other are electrically connected to one another. ### Claim 8 (depends on 7) The triboelectric device of claim 7, wherein the charging member is positively charged and the charging layer is negatively charged in the contact area of the charging member and the charging layer. ### Claim 9 (depends on 8) The triboelectric device of claim 8, wherein positive and negative charges are respectively induced on the first and second pixel electrodes corresponding to the contact area. ### Claim 10 (depends on 9) The triboelectric device of claim 9, wherein the first and second particles are configured to move according to the change in the electric field between the first and second pixel electrodes corresponding to the contact area to implement the image. ### Claim 11 (depends on 1) The triboelectric device of claim 1, wherein the first and second electrodes are electrically connected to each other. ### Claim 12 (depends on 11) The triboelectric device of claim 11, wherein the charging member is positively charged and the charging layer is negatively charged in the contact area of the charging member and the charging layer. ### Claim 13 (depends on 12) The triboelectric device of claim 12, wherein positive and negative charges are respectively induced on first and second electrodes corresponding to the contact area. ### Claim 14 (depends on 1) The triboelectric device of claim 1, wherein the first electrode includes a plurality of pixel electrodes and the second electrode includes a common electrode. ### Claim 15 (depends on 14) The triboelectric device of claim 14, wherein the plurality of pixel electrodes and the second electrode are electrically connected to one another. ### Claim 16 (depends on 14) The triboelectric device of claim 14, wherein the plurality of pixel electrodes are grounded.