# US 8,542,184 B2 · Driving device and driving method of electrophoretic display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,542,184 B2 - Document ID: US8542184B2 - Status: Granted - Kind: B2 - Application number: 12/637,020 - Filed: 2009-12-14 - Published: 2010-04-15 - Granted: 2013-09-24 - Earliest claimed: 2006-01-20 - Assignees: Seiko Epson Corporation - Applicants: Hidetoshi Saito - Inventors: Hidetoshi Saito - Web page: https://patentgrep.com/patent/US8542184B2 ## CPC - G09G 3/344: {based on particles moving in a fluid or in a gas, e.g. electrophoretic devices (electrophoretic devices per se G02F1/167)} - G09G 2310/0275: Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current - G09G 2310/0289: Details of voltage level shifters arranged for use in a driving circuit - G09G 2310/06: Details of flat display driving waveforms - G09G 2370/08: Details of image data interface between the display device controller and the data line driver circuit - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A driving device of an electrophoretic display panel having a common electrode and a plurality of divided electrodes disposed opposite to the common electrode includes: a first driving circuit that outputs a plurality of voltages corresponding to a plurality of voltage data supplied as a series of data and supplies the plurality of voltages to the plurality of divided electrodes; and a second driving circuit that outputs a voltage corresponding to supplied data and supplies the voltage to the common electrode. ## Claims ### Claim 1 A driving device of an electrophoretic display panel, the electrophoretic display panel including: a common electrode; and a plurality of divided electrodes disposed opposite to the common electrode, the plurality of divided electrodes being arranged in a matrix, the driving device comprising: a first driving circuit that outputs a plurality of first voltages corresponding to a plurality of voltage data supplied as a series of data and supplies the plurality of first voltages to the plurality of divided electrodes; and a second driving circuit that outputs a second voltage and supplies the second voltage to the common electrode, wherein the second driving circuit changes the second voltage while the first driving circuit does not output the plurality of first voltages. ### Claim 2 (depends on 1) The driving device of the electrophoretic display panel according to claim 1, wherein the first driving circuit outputs the plurality of first voltages while the second driving circuit does not change the second voltage. ### Claim 3 (depends on 1) The driving device of the electrophoretic display panel according to claim 1, wherein the first driving circuit includes a series-to-parallel data conversion circuit serving to convert supplied serial data to parallel data and a plurality of voltage output circuits serving to generate voltages of levels corresponding to a plurality of data converted to the parallel data, and the second driving circuit includes a voltage output circuit serving to generate a voltage of a level corresponding to supplied data. ### Claim 4 (depends on 1) The driving device of the electrophoretic display panel according to claim 1, wherein the second driving circuit inverts the second voltage in correspondence with the supplied data a plural number of times. ### Claim 5 (depends on 3) The driving device of the electrophoretic display panel according to claim 3, wherein the series-to-parallel data conversion circuit includes a shift register stage and a latch stage. ### Claim 6 (depends on 3) The driving device of the electrophoretic display panel according to claim 3, wherein the voltage output circuit is a ternary output circuit that outputs one of high impedance, high voltage level, and low voltage level in response to an input. ### Claim 7 A driving method of an electrophoretic display panel, the electrophoretic display panel including: a common electrode; and a plurality of divided electrodes disposed opposite to the common electrode, the plurality of divided electrodes being arranged in a matrix, the driving method comprising: outputting a plurality of first voltages corresponding to a plurality of voltage data supplied as a series of data and supplying the plurality of first voltages to the plurality of divided electrodes; outputting a second voltage corresponding to supplied data and supplying the second voltage to the common electrode; and changing the second voltage while the plurality of first voltages is not outputted.