# US 7,746,335 B2 · Multi-switch half source driving display device and method for liquid crystal display panel using RGBW color filter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,746,335 B2 - Document ID: US7746335B2 - Status: Granted - Kind: B2 - Application number: 11/559,908 - Filed: 2006-11-15 - Published: 2008-03-27 - Granted: 2010-06-29 - Earliest claimed: 2006-09-26 - Assignees: Au Optronics Corporation - Inventors: Wen-Fa Hsu - Web page: https://patentgrep.com/patent/US7746335B2 ## CPC - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 3/3614: {Control of polarity reversal in general} - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2320/0209: Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display - 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 display device for a liquid crystal display (LCD) panel using a RGBW color filter and a display method thereof are provided. The display device includes a source driver and a MSHD(Multi-Switch Half source Driving) display panel. The display method includes arranging the RGB color filter onto the MSHD display panel; using the source driver to drive a plurality of pixels of the MSHD display panel in a polarity-dot-inversion form; and displaying a frame formed of the plurality of pixels of the MSHD display panel which are in polarity-dot-inversion form via the light passing through the RGBW color filter. ## Claims ### Claim 1 A display device, comprising: a source driver; and a MSHD (Multi-Switch Half source Driving) display panel comprising a RGBW (red, green, blue, and white) color filter and a plurality of pixels, so that each of the pixels forms a red pixel, a green pixel, a blue pixel, or white pixel, wherein the source driver drives the pixels of the MSHD display panel in a polarity-two-dot-inversion form, so that the red pixels, the green pixels, the blue pixels, and the white pixels are individually displayed in a polarity-dot-inversion form. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein the RGBW color filter comprises a plurality of regions, wherein each of the regions comprises a red block, a green block, a blue block and a white block. ### Claim 3 (depends on 2) The display device as claimed in claim 2, wherein each of the regions is a square region, and the red block, the green block, the blue block, and the white block are formed at four corners of the square region, respectively. ### Claim 4 (depends on 1) The display device as claimed in claim 1, wherein the MSHD display panel comprises a plurality of gate lines and a plurality of source lines, wherein the gate lines are coupled to a gate driver, the source lines are coupled to the source driver, and each of the source lines and two corresponding gate lines drive two of the pixels. ### Claim 5 (depends on 1) The display device as claimed in claim 1, wherein a Xth gate line is coupled to the gate of a first transistor, a (X+1)th gate line is coupled to the gate of a second transistor, a Yth source line is coupled to the source of the first transistor, the drain of the first transistor is coupled to a first pixel capacitor and a source of the second transistor, and a drain of the second transistor is coupled to a second pixel capacitor. ### Claim 6 (depends on 1) The display device as claimed in claim 1, wherein the MSHD display panel is a liquid crystal display (LCD) panel. ### Claim 7 A display method, comprising: arranging a RGBW color filter on a MSHD display panel having a plurality of pixels, so that each of the pixels forms a red pixel, a green pixel, a blue pixel, or white pixel; and driving the pixels of the MSHD display panel in a polarity-two-dot-inversion form through a source driver, so that the red pixels, the green pixels, the blue pixels, and the white pixels are individually displayed in a polarity-dot-inversion form. ### Claim 8 (depends on 7) The display method as claimed in claim 7, wherein the RGBW color filter comprises a plurality of regions, wherein each of the regions comprises a red block, a green block, a blue block, and a white block. ### Claim 9 (depends on 8) The display method as claimed in claim 8, wherein each of the regions is a square region, and the red block, the green block, the blue block, and the white block are formed at four corners of the square region, respectively. ### Claim 10 (depends on 7) The display method as claimed in claim 7, wherein the MSHD display panel comprises a plurality of gate lines and a plurality of source lines, the gate lines being coupled to a gate driver, the source lines being coupled to the source driver, and each of the source lines and two corresponding gate lines together drive two of the pixels. ### Claim 11 (depends on 7) The display method using a RGBW color filter as claimed in claim 7, wherein the step of displaying a frame of the plurality of pixels of the MSHD display panel in polarity-dot-inversion form comprises sequentially driving the pixels in a Lth row and pixels in a (L+1)th row, wherein L is a natural number, wherein the step of sequentially driving the pixels in the Lth row and the pixels in the (L+1)th row comprises: driving a first pixel in the Lth row; driving a second pixel in the (L+1)th row; and driving a third pixel in the Lth row. ### Claim 12 (depends on 7) The display method as claimed in claim 7, wherein the MSHD display panel is an LCD panel.