# US 7,746,309 B2 · Driving circuit having static display units and liquid crystal display device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,746,309 B2 - Document ID: US7746309B2 - Status: Granted - Kind: B2 - Application number: 11/644,289 - Filed: 2006-12-21 - Published: 2007-06-21 - Granted: 2010-06-29 - Earliest claimed: 2005-12-21 - Assignees: Innolux Display Corp. - Inventors: Eddy Giing-Lii Chen; Sz-Hsiao Chen - Web page: https://patentgrep.com/patent/US7746309B2 ## CPC - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G02F 1/13624: {having more than one switching element per pixel} - G09G 3/2074: {using sub-pixels} - G09G 3/3614: {Control of polarity reversal in general} - G09G 2300/0443: with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence) - G09G 2300/0857: Static memory circuit, e.g. flip-flop - 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) - 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 ## Abstract An exemplary liquid crystal display device (1) includes a first substrate (3), a second substrate (2) facing the first substrate, and a liquid crystal layer (4) sandwiched between the first substrate and the second substrate. The first substrate includes a plurality of scan lines (11); a plurality of first and second parallel data lines (12, 22) orthogonal to the scan lines; a plurality of first and second thin film transistors (14, 24), positioned near a crossing of a corresponding scan line and a corresponding first data line, respectively; a plurality of first and second pixel electrodes (15, 25) electrically coupled to the first and second thin film transistors, respectively; a plurality of first and second static display units (19, 29) for providing voltage to the first and second pixel electrodes in a static display mode. ## Claims ### Claim 1 A driving circuit of a liquid crystal display device, comprising: a plurality of parallel scan lines; a plurality of first parallel data lines substantially orthogonal to the scan lines; a plurality of second parallel data lines substantially orthogonal to the scan lines and parallel to the first data lines; a plurality of first thin film transistors, each positioned near a crossing of a corresponding one of the scan lines and a corresponding one of the first data lines; a plurality of second thin film transistors, each positioned near a crossing of a corresponding one of the scan lines and a corresponding one of the second data lines; a plurality of first pixel electrodes electrically coupled to the first thin film transistors; a plurality of second pixel electrodes electrically coupled to the second thin film transistors; a plurality of first static display units each comprising an output terminal electrically coupled to a corresponding one of the first thin film transistors, and each first static display unit configured for providing voltage to a corresponding one of the first pixel electrodes in a static display mode of the liquid crystal display device; and a plurality of second static display unite each comprising an output terminal electrically coupled to a corresponding one of the second thin film transistors, and each second static display unit configured for providing voltage to a corresponding one of the second pixel electrodes in the static display mode. ### Claim 2 (depends on 1) The driving circuit as claimed in claim 1, wherein an area of the first pixel electrode is equal to that of the second pixel electrode. ### Claim 3 (depends on 1) The driving circuit as claimed in claim 1, wherein an area of the first pixel electrode is different to that of the second pixel electrode. ### Claim 4 (depends on 1) The driving circuit as claimed in claim 1, wherein a ratio of an area of the first pixel electrode to that of the second pixel electrode is 1:2. ### Claim 5 (depends on 1) The driving circuit as claimed in claim 1, wherein each of the first and second static display units comprises a static random access memory, a third thin film transistor, a fourth thin film transistor, a drain electrode of the third thin film transistor is electrically coupled to a terminal of the static random access memory, and a source electrode of the third thin film transistor is electrically coupled to the output terminal of the static display unit, a source electrode of the fourth thin film transistor is electrically coupled to another terminal of the static random access memory, and a drain electrode of the third thin film transistor is electrically coupled to the output terminal of the static display unit. ### Claim 6 A liquid crystal display device, comprising: a first substrate comprising: a plurality of parallel scan lines; a plurality of first parallel data lines substantially orthogonal to the scan lines; a plurality of second parallel data lines substantially orthogonal to the scan lines and parallel to the first data lines; a plurality of first thin film transistors, each positioned near a crossing of a corresponding one of the scan lines and a corresponding one of the first data lines; a plurality of second thin film transistors, each positioned near a crossing of a corresponding one of the scan lines and a corresponding one of the second data lines; a plurality of first pixel electrodes electrically coupled to the first thin film transistors; a plurality of second pixel electrodes electrically coupled to the second thin film transistors; a plurality of first static display units each comprising an output terminal electrically coupled to a corresponding one of the first thin film transistors, and each first static display unit configured for providing voltage to a corresponding one of the first pixel electrodes in a static display mode of the liquid crystal display device; and a plurality of second static display unite each comprising an output terminal electrically coupled to a corresponding one of the second thin film transistors, and each second static display unit configured for providing voltage to a corresponding one of the second pixel electrodes in the static display mode; a second substrate facing the first substrate; and a liquid crystal layer sandwiched between the first substrate and the second substrate. ### Claim 7 (depends on 6) The liquid crystal display device as claimed in claim 6, wherein an area of the first pixel electrode is equal to that of the second pixel electrode. ### Claim 8 (depends on 6) The liquid crystal display device as claimed in claim 6, wherein an area of the first pixel electrode is different to that of the second pixel electrode. ### Claim 9 (depends on 6) The liquid crystal display device as claimed in claim 6, wherein a ratio of an area of the first pixel electrode to that of the second pixel electrode is 1:2. ### Claim 10 (depends on 6) The liquid crystal display device as claimed in claim 6, wherein each of the first and second static display units comprises a static random access memory, a third thin film transistor, a fourth thin film transistor, a drain electrode of the third thin film transistor is electrically coupled to a terminal of the static random access memory, a source electrode of the third thin film transistor is electrically coupled to the output terminal of the static display unit, a source electrode of the fourth thin film transistor is electrically coupled to another terminal of the static random access memory, and a drain electrode of the third thin film transistor is electrically coupled to the output terminal of the static display unit.