# US 2021/0278735 A1 · Electro-optical device and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278735 A1 - Document ID: US20210278735A1 - Status: Published application - Kind: A1 - Application number: 17/193,538 - Filed: 2021-03-05 - Published: 2021-09-09 - Earliest claimed: 2020-03-06 - Assignees: Seiko Epson Corporation - Applicants: Seiko Epson Corporation - Inventors: Shinsuke FUJIKAWA - Web page: https://patentgrep.com/patent/US20210278735A1 ## CPC - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G09G 3/3688: {suitable for active matrices only} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 3/3614: {Control of polarity reversal in general} - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0814: used for selection purposes, e.g. logical AND for partial update - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - 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 - 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 In an electro-optical device, a transmission gate includes two or more n-channel type transistors controlled by a positive logic selection signal line and a p-channel type transistor controlled by a negative logic selection signal line. Each of the selection signal lines includes a main line part extending in a first direction and a branch line part extending in a second direction, and the n-channel type transistors and the p-channel type transistor are alternately arranged along the second direction. ## Claims ### Claim 1 An electro-optical device, comprising: a plurality of data lines including m data lines grouped together, m being an integer equal to or greater than 2; a data signal line configured to output a data signal in accordance with a gray scale of a pixel correspondingly to the m data lines; m positive logic selection signal lines supplied with a positive logic selection signal; m negative logic selection signal lines supplied with a negative logic selection signal paired with the positive logic selection signal; and a transmission gate including an input end coupled to the data signal line and an output end coupled to any of the m data lines, a conduction state between the input end and the output end being defined based on the positive logic selection signal and the negative logic selection signal, wherein the transmission gate includes at least two first conductive-type transistors including a gate electrode supplied with the positive logic selection signal and a second conductive-type transistor including a gate electrode supplied with the negative logic selection signal, and when an alignment direction of the plurality of data lines is a first direction, and an extension direction of the plurality of data lines is a second direction, the first conductive-type transistor and the second conductive-type transistor are each arranged along the second direction, and the second conductive-type transistor is arranged between the two first conductive-type transistors when viewed in the first direction. ### Claim 2 (depends on 1) The electro-optical device according to claim 1, wherein the transmission gate is provided with a plurality of the second conductive-type transistors, and the first conductive-type transistors and the second conductive-type transistors are alternately arranged when viewed in the first direction. ### Claim 3 (depends on 2) The electro-optical device according to claim 2, wherein the transmission gate is provided with the same number of the first conductive-type transistors and the second conductive-type transistors. ### Claim 4 (depends on 2) The electro-optical device according to claim 2, wherein the first conductive-type transistors and the second conductive-type transistors are arranged at positions deviated from each other in the first direction when viewed in the second direction. ### Claim 5 (depends on 4) The electro-optical device according to claim 4, wherein each of the m positive logic selection signal lines and the m negative logic selection signal lines includes a main line part extending in the first direction and a branch line part extending in the second direction from the main line part and being electrically coupled to the transmission gate, and the branch line part of each of the m positive logic selection signal lines and the branch line part of each of the m negative logic selection signal lines extend in the second direction in parallel to each other. ### Claim 6 (depends on 2) The electro-optical device according to claim 2, wherein the first conductive-type transistors and the second conductive-type transistors are arranged at the same position in the first direction when viewed in the second direction. ### Claim 7 (depends on 6) The electro-optical device according to claim 6, wherein each of the m positive logic selection signal lines and the m negative logic selection signal lines includes a main line part extending in the first direction and a branch line part extending in the second direction from the main line part and being electrically coupled to the transmission gate, and each of the branch line parts of the m positive logic selection signal lines and the branch line parts of the m negative logic selection signal lines, which extends in the second direction, is bent in a midway portion in the second direction such that the positive logic selection signal lines and the negative logic selection signal lines do not intersect with each other. ### Claim 8 (depends on 2) The electro-optical device according to claim 2, wherein each of the m positive logic selection signal lines and the m negative logic selection signal lines includes a main line part extending in the first direction and a branch line part extending in the second direction from the main line part and being electrically coupled to the transmission gate, and at least one of the branch line part of each of the m positive logic selection signal lines and the branch line part of each of the m negative logic selection signal lines includes a projection portion projecting at a midway portion in the second direction and overlapping the data line in plan view. ### Claim 9 (depends on 2) The electro-optical device according to claim 2, wherein the transmission gate and a transmission gate adjacent to the transmission gate in the first direction have the same alignment order of the first conductive-type transistors and the second conductive-type transistors in the second direction. ### Claim 10 (depends on 2) The electro-optical device according to claim 2, wherein the transmission gate and a transmission gate adjacent to the transmission gate in the first direction have opposite alignment orders of the first conductive-type transistors and the second conductive-type transistors in the second direction. ### Claim 11 (depends on 2) The electro-optical device according to claim 2, wherein at least one of the plurality of first conductive-type transistors and the plurality of second conductive-type transistors include transistors having different gate electrode areas. ### Claim 12 (depends on 2) The electro-optical device according to claim 2, wherein each of the m positive logic selection signal lines and the m negative logic selection signal lines includes a main line part extending in the first direction and a branch line part extending in the second direction and being electrically coupled to the transmission gate, and at least one of the plurality of first conductive-type transistors and the plurality of second conductive-type transistors include transistors among which a transistor provided at a position farther, in the second direction, from the main line part has a smaller gate electrode area than a transistor provided at a position closer, in the second direction, to the main line part. ### Claim 13 (depends on 1) An electronic apparatus, comprising: the electro-optical device according to claim 1.