# US 2022/0036784 A1 · Integrated Circuit Device, Electronic Apparatus, and Vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0036784 A1 - Document ID: US20220036784A1 - Status: Published application - Kind: A1 - Application number: 17/386,815 - Filed: 2021-07-28 - Published: 2022-02-03 - Earliest claimed: 2020-07-29 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Tadashi YASUE - Web page: https://patentgrep.com/patent/US20220036784A1 ## CPC - G09G 3/18: using liquid crystals - B60K 35/22: Display screens - B60K 35/81: for controlling displays - G09G 3/3614: {Control of polarity reversal in general} - G09G 3/3696: {Generation of voltages supplied to electrode drivers} - B60K 2360/1523: Matrix displays - G09G 2310/06: Details of flat display driving waveforms - G09G 2320/046: Dealing with screen burn-in prevention or compensation of the effects thereof - G09G 2320/066: for control of contrast - G09G 2380/10: Automotive applications - 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) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES ## Abstract An integrated circuit device includes a voltage supply circuit and a drive circuit. The voltage supply circuit supplies a common voltage, a first positive polarity voltage higher than the common voltage, a second positive polarity voltage higher than the first positive polarity voltage, a first negative polarity voltage lower than the common voltage, and a second negative polarity voltage lower than the first negative polarity voltage. The drive circuit outputs a first drive waveform signal for dot matrix display based on the common voltage, the first positive polarity voltage, the second positive polarity voltage, the first negative polarity voltage, and the second negative polarity voltage, and outputs a second drive waveform signal for segment display based on the common voltage, the first positive polarity voltage, and the first negative polarity voltage. ## Claims ### Claim 1 An integrated circuit device comprising: a voltage supply circuit configured to supply a common voltage, a first positive polarity voltage higher than the common voltage, a second positive polarity voltage higher than the first positive polarity voltage, a first negative polarity voltage lower than the common voltage, and a second negative polarity voltage lower than the first negative polarity voltage; and a drive circuit configured to output a first drive waveform signal for dot matrix display based on the common voltage, the first positive polarity voltage, the second positive polarity voltage, the first negative polarity voltage, and the second negative polarity voltage, and output a second drive waveform signal for segment display based on the common voltage, the first positive polarity voltage, and the first negative polarity voltage. ### Claim 2 (depends on 1) The integrated circuit device according to claim 1, further comprising: an output terminal, wherein the drive circuit is configured to output the first drive waveform signal to the output terminal based on the common voltage, the first positive polarity voltage, the second positive polarity voltage, the first negative polarity voltage, and the second negative polarity voltage when the output terminal is set as an output terminal for dot matrix display, and output the second drive waveform signal to the output terminal based on the common voltage, the first positive polarity voltage, and the first negative polarity voltage when the output terminal is set as an output terminal for segment display. ### Claim 3 (depends on 2) The integrated circuit device according to claim 2, further comprising: a control circuit configured to set the output terminal as the output terminal for dot matrix display or the output terminal for segment display. ### Claim 4 (depends on 1) The integrated circuit device according to claim 1, wherein the voltage supply circuit includes a first regulator configured to generate the first negative polarity voltage based on a power supply voltage. ### Claim 5 (depends on 4) The integrated circuit device according to claim 4, wherein the voltage supply circuit includes a second regulator configured to generate the second positive polarity voltage obtained by multiplying the first negative polarity voltage by four with reference to the second negative polarity voltage. ### Claim 6 (depends on 5) The integrated circuit device according to claim 5, wherein the second regulator is configured to generate the first positive polarity voltage and the common voltage that divide a voltage between the first negative polarity voltage and the second positive polarity voltage into three equal parts. ### Claim 7 (depends on 4) The integrated circuit device according to claim 4, wherein the first regulator is an electronic volume configured to perform contrast adjustment of segment display. ### Claim 8 (depends on 1) The integrated circuit device according to claim 1, wherein the voltage supply circuit includes a third regulator configured to generate a third positive polarity voltage higher than the second positive polarity voltage and a third negative polarity voltage lower than the second negative polarity voltage, and to supply the third positive polarity voltage and the third negative polarity voltage to a common drive circuit for dot matrix display. ### Claim 9 (depends on 8) The integrated circuit device according to claim 8, wherein the third regulator is an electronic volume configured to perform contrast adjustment of dot matrix display. ### Claim 10 (depends on 1) An electronic apparatus comprising: the integrated circuit device according to claim 1. ### Claim 11 (depends on 1) A vehicle comprising: the integrated circuit device according to claim 1.