# US 10,373,566 B2 · Organic light emitting diode display device and display system including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,373,566 B2 - Document ID: US10373566B2 - Status: Granted - Kind: B2 - Application number: 14/809,099 - Filed: 2015-07-24 - Published: 2016-08-18 - Granted: 2019-08-06 - Earliest claimed: 2015-02-16 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jae-Sic Lee; Jin-Woo Park - Web page: https://patentgrep.com/patent/US10373566B2 ## CPC - G09G 3/3291: in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2310/0224: Details of interlacing - 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 2310/0278: Details of driving circuits arranged to drive both scan and data electrodes - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2320/0242: Compensation of deficiencies in the appearance of colours - G09G 2320/0626: for control of overall brightness - G09G 2330/021: Power management, e.g. power saving - G09G 2330/023: using energy recovery or conservation - G09G 2330/028: Generation of voltages supplied to electrode drivers in a matrix display other than LCD - G09G 2340/0407: Resolution change, inclusive of the use of different resolutions for different screen areas - G09G 2370/08: Details of image data interface between the display device controller and the data line driver circuit - 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 diode (OLED) display device includes a display panel including a plurality of pixel rows; a driving circuit configured to: provide a first display data to the plurality of pixel rows in a normal mode; provide a second display data including black data to the plurality of pixel rows in a dimming mode, in response to a mode signal; and decrease a second luminance of the display panel in the dimming mode to a level lower than a first luminance of the display panel in the normal mode; and a power supply configured to apply a lower power supply voltage and a high power supply voltage to the display panel, the power supply providing the mode signal. ## Claims ### Claim 1 An organic light emitting diode (OLED) display device, comprising: a display panel comprising a plurality of pixel rows; a driving circuit configured to: provide a first display data to the plurality of pixel rows in a normal mode; provide a second display data comprising black data to the plurality of pixel rows in a dimming mode, in response to a mode signal; and decrease a second luminance of the display panel in the dimming mode to a level lower than a first luminance of the display panel in the normal mode; a data converter configured to convert input image data to the first display data or the second display data in response to the mode signal, wherein the data converter comprises a switch configured to receive the input image data, a first processing logic configured to convert the input image data to the first display data, and a second processing logic configured to convert the input image data to the second display data comprising the black data, the black data assigning a portion of pixels of the display panel to not emit light, the data converter being configured to control, via the switch based on the mode signal, a path of the input image data through the switch to the first processing logic or the second processing logic and output the first display data or the second display data from the first processing logic or the second processing logic, respectively, to the driving circuit; and a power supply configured to apply a lower power supply voltage and a high power supply voltage to the display panel, the power supply providing the mode signal. ### Claim 2 (depends on 1) The OLED display device of claim 1, wherein the plurality of pixel rows comprise a plurality of odd-numbered pixel rows and a plurality of even-numbered pixel rows that are alternately arranged with respect to each other, wherein each of the plurality of odd-numbered pixel rows comprises first pixels and second pixels that are alternately arranged with respect to each other, wherein each of the plurality of even-numbered pixel rows comprises third pixels and fourth pixels that are alternately arranged with respect to each other, and wherein each first pixel comprises a first sub pixel configured to emit a first color light and a second sub pixel configured to emit a second color light, each second pixel comprising a third sub pixel configured to emit a third color light and the second sub pixel configured to emit the second color light, each third pixel comprising the third sub pixel and the second sub pixel and each fourth pixel comprising the first sub pixel and the second sub pixel. ### Claim 3 (depends on 2) The OLED display device of claim 2, wherein the driving circuit is configured to provide black data to the second sub pixels of the second pixel and the fourth pixel in the dimming mode. ### Claim 4 (depends on 2) The OLED display device of claim 2, wherein the driving circuit, in the diming mode, is configured to: provide black data to the second sub pixels of the second pixel and the fourth pixel during a k-th frame period (k is an integer greater than 0); and provide the black data to the second sub pixels of the first pixel and the third pixel during a (k+1)-th frame period. ### Claim 5 (depends on 2) The OLED display device of claim 2, wherein the driving circuit, in the diming mode, is configured to: provide black data to the second sub pixels of the second pixel and the third pixel during a k-th frame period (k is an integer greater than 0); and provide the black data to the second sub pixels of the first pixel and the fourth pixel during a (k+1)-th frame period. ### Claim 6 (depends on 2) The OLED display device of claim 2, wherein the driving circuit, in the diming mode, is configured to: provide black data to the pixels in the even-numbered pixel rows during a k-th frame period (k is an integer greater than 0); and provide the black data to the pixels in the odd-numbered pixel rows during a (k+1)-th frame period. ### Claim 7 (depends on 2) The OLED display device of claim 2, wherein the driving circuit, in the diming mode, is configured to: provide black data to the second pixels and the fourth pixels during a k-th frame period (k is an integer greater than 0); and provide the black data to the first pixels and the third pixels during a (k+1)-th frame period. ### Claim 8 (depends on 2) The OLED display device of claim 2, wherein the first color light is a red color light, the second color light is a green color light, and the third color light is a blue color light. ### Claim 9 (depends on 2) The OLED display device of claim 2, wherein the driving circuit comprises: a scan driver configured to provide scan signals to the sub pixels through a plurality of scan lines; a data driver configured to provide data voltages corresponding to the first display data or the second display data to the sub pixels through a plurality of data lines; an emission driver configured to provide emission control signals to the sub pixels through a plurality of a plurality of emission control lines to adjust non-emission time of each sub pixels in the dimming mode; a timing controller configured to control the scan driver, the data driver, the emission driver and the power supply, wherein the timing controller is configured to process an input image data to generate the first display data or the second display data in response to the mode signal. ### Claim 10 (depends on 9) The OLED display device of claim 9, wherein each of the sub pixels comprises: a switching transistor comprising a first terminal coupled to each of the data lines, a gate terminal coupled to each of the scan lines and a second terminal coupled to a first node; a storage capacitor between the high power supply voltage and the first node; a driving transistor comprising a first terminal coupled to the high power supply voltage, a gate terminal coupled to the first node and a second terminal; an emission transistor comprising a first terminal coupled to a second terminal of the driving transistor, a gate terminal configured to receive the emission control signal and a second terminal; and an OLED between the second terminal of the driving transistor and a lower power supply voltage. ### Claim 11 (depends on 9) The OLED display device of claim 9, wherein the timing controller comprises: a signal generator configured to generate a first driving control signal that controls the data driver, a second driving control signal that controls the scan driver, a third driving control signal that controls the emission driver and a power control signal that controls the power supply, in response to a control signal and the mode signal. ### Claim 12 (depends on 11) The OLED display device of claim 11, wherein the data converter comprises: the first processing logic configured to process the input image data to provide the first display data to the data driver in the normal mode; and the second processing logic configured to process the input image data to provide the second display data to the data driver in the dimming mode. ### Claim 13 (depends on 1) The OLED display device of claim 1, wherein the plurality of pixel rows comprise a plurality of odd-numbered pixel rows and a plurality of even-numbered pixel rows that are alternately arranged with respect to each other, wherein each of the plurality of odd-numbered pixel rows comprises first pixels and second pixels that are alternately arranged with respect to each other, wherein each of the plurality of even-numbered pixel rows comprises third pixels and fourth pixels that are alternately arranged with respect to each other, and wherein each of the first through fourth pixels comprises a first sub pixel configured to emit a first color light, a second sub pixel configured to emit a second color light, and a third sub pixel configured to emit a third color light. ### Claim 14 (depends on 13) The OLED display device of claim 13, wherein the driving circuit, in the diming mode, is configured to: provide black data to a same pixel of the first pixel and the third pixel during a k-th frame period (k is an integer greater than 0); and provide the black data to a same sub pixel of the second pixel and the fourth pixel during a (k+1)-th frame period. ### Claim 15 (depends on 14) The OLED display device of claim 14, wherein the same sub pixel is one of the first through third sub pixels. ### Claim 16 (depends on 13) The OLED display device of claim 13, wherein the driving circuit, in the diming mode, is configured to: provide black data to a same pixel of the first pixel and the fourth pixel during a k-th frame period (k is an integer greater than 0); and provide the black data to the same sub pixel of the second pixel and the third pixel during a (k+1)-th frame period. ### Claim 17 (depends on 16) The OLED display device of claim 16, wherein the same sub pixel is one of the first through third sub pixels. ### Claim 18 (depends on 13) The OLED display device of claim 13, wherein the driving circuit, in the diming mode, is configured to: provide black data to the first pixel and the fourth pixel during a k-th frame period (k is an integer greater than 0); and provide the black data to the second pixel and the third pixel during a (k+1)-th frame period. ### Claim 19 (depends on 13) The OLED display device of claim 13, wherein the first color light is a red color light, the second color light is a green color light and the third color light is a blue color light. ### Claim 20 A display system comprising: an application processor configured to generate image data and a control signal; an organic light emitting diode (OLED) display device configured to display the image data in response to the control signal; and a power supply comprising a battery configured to provide a power supply voltage to the OLED display device and a battery sensing module configured to detect a power of the battery, wherein the OLED display device comprises: a display panel comprising a plurality of pixel rows; a driving circuit configured to: provide a first display data to the plurality of pixel rows in a normal mode; provide a second display data including black data to the plurality of pixel rows in a dimming mode, in response to a mode signal; and a data converter configured to: convert input image data to the first display data or the second display data in response to the mode signal, wherein the data converter comprises a switch configured to receive the input image data, a first processing logic configured to convert the input image data to the first display data, and a second processing logic configured to convert the input image data to the second display data comprising the black data, the black data assigning a portion of pixels of the display panel to not emit light, the data converter being configured to control a path of the input image data through the switch to the first processing logic or the second processing logic and output the first display data or the second display data from the first processing logic or the second processing logic, respectively, to the driving circuit; and reduce a second luminance of the display panel in the dimming mode to a lower level than a first luminance of the display panel in the normal mode, the mode signal being based on a battery sensing signal that the battery sensing module generates based on the power of the battery.