# US 8,570,262 B2 · Liquid crystal display with brightness-compensated pixels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,262 B2 - Document ID: US8570262B2 - Status: Granted - Kind: B2 - Application number: 13/069,291 - Filed: 2011-03-22 - Published: 2011-12-29 - Granted: 2013-10-29 - Earliest claimed: 2010-06-25 - Assignees: Samsung Display Co., Ltd. - Applicants: Seung-Kyu Lee; Dong-Hoon Lee; Chul-Ho Kim - Inventors: Seung-Kyu Lee; Dong-Hoon Lee; Chul-Ho Kim - Web page: https://patentgrep.com/patent/US8570262B2 ## CPC - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/0876: Supplementary capacities in pixels having special driving circuits and electrodes instead of being connected to common electrode or ground; Use of additional capacitively coupled compensation electrodes - G09G 2320/0242: Compensation of deficiencies in the appearance of colours - 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 liquid crystal display (LCD) is disclosed. The pixels of the LCD each have storage capacitors, and the capacitances of the storage capacitors of pixels of different colors are different. ## Claims ### Claim 1 A liquid crystal display (LCD), comprising: a pixel unit including data lines, gate lines, and storage lines; and a plurality of pixels coupled to the data lines, gate lines and storage lines, wherein each of the pixels comprises: a thin film transistor (TFT) coupled to one of the gate lines and to one of the data lines, a liquid crystal capacitor coupled to the TFT, the liquid crystal capacitor having a terminal connected to a storage electrode, and a storage capacitor formed by one of the storage lines and the storage electrode overlapping the one storage line, wherein each pixel is configured to display light of one of a plurality of colors, wherein the areas of overlapping storage electrodes and storage lines of pixels of different colors are different from each other, wherein the colors are red, green, and blue, and wherein, in the blue pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 1.67, wherein, in the green pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 3.03, and wherein, in the red pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 4.09. ### Claim 2 (depends on 1) The LCD as claimed in claim 1, wherein the area of the storage electrode overlapping the storage line of the blue pixel is less than the corresponding areas of the red and green pixels. ### Claim 3 (depends on 1) The LCD as claimed in claim 1, wherein the storage lines are connected to a storage signal generator configured to apply storage signals as boost voltages. ### Claim 4 (depends on 1) The LCD as claimed in claim 1, wherein the storage lines are alternately arranged with the gate lines. ### Claim 5 (depends on 1) The LCD as claimed in claim 1, wherein the gate lines and the storage lines are arranged in a first direction, and the data lines are arranged in a second direction. ### Claim 6 A liquid crystal display (LCD), comprising: a plurality of pixels, each pixel configured to selectively transmit light for one of a plurality of colors, and each pixel comprises: a liquid crystal capacitor having a terminal connected to a storage electrode, a thin film transistor (TFT) configured to selectively connect a data signal to the storage electrode, and a storage line configured to be selectively driven with a boost voltage, wherein the storage electrode overlaps the storage line at selected portions so as to form a storage capacitor configured to feed the boost voltage to the liquid crystal capacitor, wherein the capacitance of the storage capacitors of the pixels of one of the colors is different from the capacitance of the storage capacitors of the pixels of another of the colors, wherein the colors are red, green, and blue and, wherein, in the blue pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 1.67, wherein, in the green pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 3.03, and wherein, in the red pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 4.09. ### Claim 7 (depends on 6) The LCD as claimed in claim 6, wherein the capacitance of the storage capacitors of the blue pixels is less than the capacitance of the storage capacitors of the green and red pixels. ### Claim 8 A liquid crystal display (LCD), comprising: a plurality of pixels, each pixel configured to selectively transmit light for one of a plurality of colors, and each pixel comprises: a liquid crystal capacitor, a thin film transistor (TFT) configured to selectively connect a data signal to the liquid crystal capacitor, and a storage capacitor configured to feed a boost voltage to the liquid crystal capacitor, wherein the capacitance of the storage capacitors of the pixels of one of the colors is different from the capacitance of the storage capacitors of the pixels of another of the colors, wherein the colors are red, green, and blue and, in the blue pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 1.67, wherein, in the green pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 3.03, and wherein, in the red pixels, the ratio of the capacitance of the storage capacitor to the capacitance of the liquid crystal capacitor is 4.09. ### Claim 9 (depends on 8) The LCD as claimed in claim 8, wherein the capacitance of the storage capacitors of the blue pixels is less than the capacitance of the storage capacitors of the green and red pixels.