# US 8,570,258 B2 · Organic light emitting display and method of driving the same with a driver with reduced power consumption in standby mode > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,258 B2 - Document ID: US8570258B2 - Status: Granted - Kind: B2 - Application number: 12/784,241 - Filed: 2010-05-20 - Published: 2011-02-03 - Granted: 2013-10-29 - Earliest claimed: 2009-08-03 - Assignees: Samsung Display Co., Ltd. - Applicants: Sung-Un Park; Sung-Cheon Park; Wook Lee - Inventors: Sung-Un Park; Sung-Cheon Park; Wook Lee - Web page: https://patentgrep.com/patent/US8570258B2 ## CPC - G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2310/0251: Precharge or discharge of pixel before applying new pixel voltage - G09G 2310/0262: The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes - G09G 2330/022: in absence of operation, e.g. no data being entered during a predetermined time - 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 An organic light emitting display capable of reducing power consumption in a standby mode and a method of driving the same. The organic light emitting display includes a pixel unit having a first emission region and a second emission region, wherein the pixel unit is configured to generate a driving current in accordance with data signals and scan signals to emit light so that light is emitted by the pixel unit only in the first emission region in a standby mode, a data driver for transmitting the data signals only to the first emission region in the standby mode, a scan driver for outputting the scan signals, and a power source supplier for generating and outputting voltages of an initialization power source and for blocking the driving current from flowing to the second emission region by utilizing a voltage of the initialization power source in the standby mode. ## Claims ### Claim 1 An organic light emitting display, comprising: a pixel unit having a first emission region and a second emission region, wherein the pixel unit is configured to generate a driving current in accordance with data signals and scan signals to emit light so that light is emitted by the pixel unit only in the first emission region in a standby mode; a data driver for transmitting the data signals only for the first emission region in the standby mode; a scan driver for outputting the scan signals; and a power source supplier for generating and outputting voltages of an initialization power source, and for blocking, in the standby mode, the driving current from flowing to the second emission region by providing, in the standby mode, a first voltage when data signals are transmitted for the second emission region, and a second voltage, differing from the first voltage, when data signals are transmitted for the first emission region; wherein the pixel unit comprises a plurality of pixels, and wherein each of the pixels comprises: an organic light emitting diode (OLED); a first transistor comprising a first electrode coupled to a first node, a second electrode coupled to a second node, and a gate coupled to a third node so that driving current flows from the first node to the second node in accordance with a voltage of the gate; a second transistor comprising a first electrode coupled to a data line, a second electrode coupled to the first node, and a gate coupled to a first scan line; a third transistor comprising a first electrode coupled to the second node, a second electrode coupled to the third node, and a gate coupled to the first scan line; a fourth transistor comprising a first electrode coupled to the initialization power source, a second electrode coupled to the third node, and a gate coupled to a second scan line; a fifth transistor comprising a first electrode coupled to a first power source, a second electrode coupled to the first node, and a gate coupled to an emission control line; a sixth transistor comprising a first electrode coupled to the second node, a second electrode coupled to the organic light emitting diode (OLED), and a gate coupled to the emission control line; and a capacitor comprising a first electrode coupled to the first power source and a second electrode coupled to the third node. ### Claim 2 (depends on 1) The organic light emitting display as claimed in claim 1, wherein the data driver is configured to be driven only in a period where data signals are transmitted for the first emission region in the standby mode. ### Claim 3 (depends on 1) The organic light emitting display as claimed in claim 1, wherein the first voltage is a voltage, at which the driving current is not generated by the first transistor. ### Claim 4 A method of driving an organic light emitting display having a pixel unit having a first emission region and a second emission region, wherein the pixel unit is configured to generate a driving current in accordance with data signals and scan signals to emit light, the method comprising, in a standby mode: transmitting a first voltage from an initialization power source when data signals are transmitted for the second emission region; and transmitting a second voltage form an initialization power source when data signals are transmitted for the first emission region; wherein the pixel unit comprises a plurality of pixels, and wherein each of the pixels comprises: an organic light emitting diode (OLED); a first transistor comprising a first electrode coupled to a first node, a second electrode coupled to a second node, and a gate coupled to a third node so that driving current flows from the first node to the second node in accordance with a voltage of the gate; a second transistor comprising a first electrode coupled to a data line, a second electrode coupled to the first node, and a gate coupled to a first scan line; a third transistor comprising a first electrode coupled to the second node, a second electrode coupled to the third node, and a gate coupled to the first scan line; a fourth transistor comprising a first electrode coupled to the initialization power source, a second electrode coupled to the third node, and a gate coupled to a second scan line; a fifth transistor comprising a first electrode coupled to a first power source, a second electrode coupled to the first node, and a gate coupled to an emission control line; a sixth transistor comprising a first electrode coupled to the second node, a second electrode coupled to the organic light emitting diode (OLED), and a gate coupled to the emission control line; and a capacitor comprising a first electrode coupled to the first power source and a second electrode coupled to the third node. ### Claim 5 (depends on 4) The method as claimed in claim 4, wherein, when the initialization power source transmits the first voltage, the pixel unit is displayed black. ### Claim 6 (depends on 4) The method as claimed in claim 4, wherein, when the initialization power source transmits the first voltage, an operation of a data driver for transmitting the data signals is stopped. ### Claim 7 An organic light emitting display, comprising: a pixel unit having a first emission region and a second emission region, wherein the pixel unit is configured to generate a driving current in accordance with data signals and scan signals to emit light so that light is emitted by the pixel unit only in the first emission region in a standby mode; a data driver for transmitting the data signals only for the first emission region in the standby mode; a scan driver for outputting the scan signals; and an initialization power source configured to provide, in the standby mode, a first voltage when data signals are transmitted for the second emission region, and a second voltage, differing from the first voltage, when data signals are transmitted for the first emission region; wherein the pixel unit comprises a plurality of pixels, and wherein each of the pixels comprises: an organic light emitting diode (OLED); a first transistor comprising a first electrode coupled to a first node, a second electrode coupled to a second node, and a gate coupled to a third node so that driving current flows from the first node to the second node in accordance with a voltage of the gate; a second transistor comprising a first electrode coupled to a data line, a second electrode coupled to the first node, and a gate coupled to a first scan line; a third transistor comprising a first electrode coupled to the second node, a second electrode coupled to the third node, and a gate coupled to the first scan line; a fourth transistor comprising a first electrode coupled to the initialization power source, a second electrode coupled to the third node, and a gate coupled to a second scan line; a fifth transistor comprising a first electrode coupled to a first power source, a second electrode coupled to the first node, and a gate coupled to an emission control line; a sixth transistor comprising a first electrode coupled to the second node, a second electrode coupled to the organic light emitting diode (OLED), and a gate coupled to the emission control line; and a capacitor comprising a first electrode coupled to the first power source and a second electrode coupled to the third node. ### Claim 8 (depends on 7) The organic light emitting display as claimed in claim 7, wherein the data driver is configured to be driven only in a period where data signals are transmitted for the first emission region in the standby mode. ### Claim 9 (depends on 7) The organic light emitting display as claimed in claim 7, wherein the first voltage is a voltage, at which the driving current is not generated by the first transistor.