# US 8,542,330 B2 · Liquid crystal display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,542,330 B2 - Document ID: US8542330B2 - Status: Granted - Kind: B2 - Application number: 13/478,176 - Filed: 2012-05-23 - Published: 2012-09-13 - Granted: 2013-09-24 - Earliest claimed: 2007-05-17 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Hajime Kimura - Inventors: Hajime Kimura - Web page: https://patentgrep.com/patent/US8542330B2 ## CPC - G02F 1/133621: {providing coloured light (G02F1/133617, G02F1/133533 take precedence)} - G02F 1/136213: {Storage capacitors associated with the pixel electrode} - G02F 1/13624: {having more than one switching element per pixel} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G09G 3/3659: {the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes} - G02F 2201/121: common or background - G02F 2201/123: pixel - G02F 2202/10: semiconductor - G09G 3/342: {using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines} - G09G 3/3655: {Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors} - G09G 3/3688: {suitable for active matrices only} - G09G 2300/0426: Layout of electrodes and connections - 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 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2300/0852: being a dynamic memory with more than one capacitor - G09G 2310/024: Scrolling of light from the illumination source over the display in combination with the scanning of the display screen - G09G 2310/0251: Precharge or discharge of pixel before applying new pixel voltage - 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 2320/0238: Improving the black level - G09G 2320/0252: Improving the response speed - G09G 2320/0257: Reduction of after-image effects - G09G 2320/0261: in the context of movement of objects on the screen or movement of the observer relative to the screen - G09G 2320/028: by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction - G09G 2340/02: Handling of images in compressed format, e.g. JPEG, MPEG - G09G 2340/0435: Change or adaptation of the frame rate of the video stream - G09G 2340/16: Determination of a pixel data signal depending on the signal applied in the previous frame - 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 The present invention has a pixel which includes a first switch, a second switch, a third switch, a first resistor, a second resistor, a first liquid crystal element, and a second liquid crystal element. A pixel electrode of the first liquid crystal element is electrically connected to a signal line through the first switch. The pixel electrode of the first liquid crystal element is electrically connected to a pixel electrode of the second liquid crystal element through the second switch and the first resistor. The pixel electrode of the second liquid crystal element is electrically connected to a Cs line through the third switch and the second resistor. A common electrode of the first liquid crystal element is electrically connected to a common electrode of the second liquid crystal element. ## Claims ### Claim 1 A liquid crystal display device comprising a pixel, the pixel including: a first transistor; a second transistor; a third transistor; a first capacitor; a second capacitor; a third capacitor; a first node; a second node; a first liquid crystal element including a first pixel electrode; a second liquid crystal element including a second pixel electrode; a first line electrically connectable to a gate of the first transistor and a gate of the second transistor; and a second line electrically connectable to a first electrode of the first capacitor, and a first electrode of the second capacitor, wherein one of a source and a drain of the first transistor is electrically connectable to a second electrode of the first capacitor, wherein the first pixel electrode is electrically connectable to the one of the source and the drain of the first transistor, wherein one of a source and a drain of the second transistor is electrically connectable to a second electrode of the second capacitor, wherein the second pixel electrode is electrically connectable to the one of the source and the drain of the second transistor, wherein the one of the source and the drain of the first transistor is included in the first node, wherein the one of the source and the drain of the second transistor and the one of the source and the drain of the third transistor are included in the second node, and wherein one of a source and a drain of the third transistor is electrically connectable to the second electrode of the second capacitor and the second pixel electrode, and the other of the source and the drain of the third transistor is electrically connectable to a second electrode of the third capacitor, and wherein the first node is not overlapped with the second pixel electrode and the second node is not overlapped with the first pixel electrode. ### Claim 2 (depends on 1) The liquid crystal display device according to claim 1, wherein the second line is a Cs line. ### Claim 3 (depends on 1) The liquid crystal display device according to claim 1, wherein the first line is electrically connectable to a gate of the third transistor. ### Claim 4 (depends on 1) The liquid crystal display device according to claim 1, wherein the first electrode of the third capacitor is electrically connectable to the second line through the first transistor. ### Claim 5 (depends on 1) The liquid crystal display device according to claim 1, wherein the other of the source and the drain of the first transistor is connected to the second line. ### Claim 6 (depends on 1) The liquid crystal display device according to claim 1, wherein the second electrode of the first capacitor is connected to the first electrode of the third capacitor. ### Claim 7 (depends on 1) The liquid crystal display device according to claim 1, wherein the other of the source and the drain of the first transistor is connected to the second line. ### Claim 8 A liquid crystal display device comprising: a first transistor; a second transistor; a third transistor; a first capacitor; a second capacitor; a third capacitor; a first node; a second node; a first liquid crystal element including a first pixel electrode; a second liquid crystal element including a second pixel electrode; a first line electrically connectable to a gate of the first transistor and a gate of the second transistor; and a second line electrically connectable to a first electrode of the first capacitor, and a first electrode of the second capacitor, and a third line; wherein one of a source and a drain of the first transistor is electrically connectable to a second electrode of the first capacitor, wherein the first pixel electrode is electrically connectable to the one of the source and the drain of the first transistor, wherein one of a source and a drain of the second transistor is electrically connectable to a second electrode of the second capacitor, wherein the second pixel electrode is electrically connectable to the one of the source and the drain of the second transistor, wherein one of a source and a drain of the third transistor is electrically connectable to the second electrode of the second capacitor and the second pixel electrode, and the other of the source and the drain of the third transistor is electrically connectable to a second electrode of the third capacitor, wherein the third line is electrically connected to the other of the source and the drain of the second transistor, and wherein the one of the source and the drain of the first transistor is included in the first node, wherein the one of the source and the drain of the second transistor and the one of the source and the drain of the third transistor are included in the second node, and wherein the first node is not overlapped with the second pixel electrode and the second node is not overlapped with the first pixel electrode. ### Claim 9 (depends on 8) The liquid crystal display device according to claim 8, wherein the second line is a Cs line. ### Claim 10 (depends on 8) The liquid crystal display device according to claim 8, wherein the first line is electrically connectable to a gate of the third transistor. ### Claim 11 (depends on 8) The liquid crystal display device according to claim 8, wherein the first electrode of the third capacitor is electrically connectable to the second line through the first transistor. ### Claim 12 (depends on 8) The liquid crystal display device according to claim 8, wherein the other of the source and the drain of the first transistor is connected to the second line. ### Claim 13 (depends on 8) The liquid crystal display device according to claim 8, wherein the second electrode of the first capacitor is connected to the first electrode of the third capacitor. ### Claim 14 (depends on 8) The liquid crystal display device according to claim 8, wherein the other of the source and the drain of the first transistor is connected to the second line. ### Claim 15 (depends on 9) The liquid crystal display device according to claim 9, wherein the third line is directly connected to the other of the source and the drain of the second transistor, and wherein the third line is not directly connected to the other of the source and the drain of the first transistor.