# US 9,520,085 B2 · Organic light-emitting diode (OLED) display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,085 B2 - Document ID: US9520085B2 - Status: Granted - Kind: B2 - Application number: 14/220,344 - Filed: 2014-03-20 - Published: 2015-01-15 - Granted: 2016-12-13 - Earliest claimed: 2013-07-09 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Min Ho Ko; Jae Won Choi - Web page: https://patentgrep.com/patent/US9520085B2 ## CPC - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3216: using a passive matrix - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2300/0804: Sub-multiplexed active matrix panel, i.e. wherein one active driving circuit is used at pixel level for multiple image producing elements - G09G 2300/0814: used for selection purposes, e.g. logical AND for partial update - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - 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: 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 is disclosed. In one aspect, the OLED display includes a substrate and odd and even-numbered pixels adjacent to each other in a column direction and respectively formed in odd and even-numbered rows. The OLED display also includes a common pixel driver connected to the odd and even-numbered pixels and driving each of the odd and even-numbered pixels. The OLED display further includes a selection unit selecting one of the odd and even-numbered pixels to be driven by the common pixel driver. The common pixel driver is formed in either the odd-numbered row or the even-numbered row. ## Claims ### Claim 1 An organic light-emitting diode (OLED) display, comprising: a substrate; a plurality of pixels formed over the substrate and arranged in rows and columns, wherein the pixels comprise a plurality of odd-numbered pixels and a plurality of even-numbered pixel formed to be adjacent to each other in a column direction and wherein the odd-numbered pixels are formed in odd-numbered rows and the even-numbered pixels are formed in even-numbered rows; a common pixel driver connected to an odd-numbered pixel and an even-numbered pixel, wherein the common pixel driver is configured to alternately drive the odd-numbered pixel and the even-numbered pixel; and a selector configured to select one of the odd-numbered pixel and the even-numbered pixel to be driven by the common pixel driver, wherein the common pixel driver is formed in either the odd-numbered row or the even-numbered row, and wherein the common pixel driver overlaps the pixels of either the odd-numbered row or the even-numbered row. ### Claim 2 (depends on 1) The OLED display of claim 1, further comprising: a scan line and a previous scan line respectively configured to apply a scan signal and a previous scan signal; a data line and a driving voltage line crossing each of the scan line and the previous scan line, wherein the data line and the driving voltage line are respectively configured to apply a data signal and a driving voltage; a first light emission control line and a second light emission control line respectively configured to apply a first light emission control signal and a second light emission control signal; and a first OLED and a second OLED respectively formed in the odd-numbered pixels and the even-numbered pixels, wherein the selector is configured to control one of the odd-numbered pixel and the even-numbered pixel to be driven by the common pixel driver based at least in part on one of the first light emission control signal or the second light emission control signal. ### Claim 3 (depends on 2) The OLED display of claim 2, wherein the common pixel driver comprises: a switching transistor connected to the scan line and the data line, wherein the switching transistor comprises a switching drain electrode; a driving transistor connected to the switching drain electrode; and a compensation transistor connected to the driving transistor and configured to compensate for a threshold voltage of the driving transistor. ### Claim 4 (depends on 3) The OLED display of claim 3, wherein the selector comprises: an odd-numbered operation control transistor and an even-numbered operation control transistor respectively configured to apply the driving voltage to the driving transistor based at least in part on the first and second light emission control signals, respectively; and an odd-numbered light emission control transistor and an even-numbered light emission control transistor respectively configured to selectively apply the driving voltage to the first and second OLEDs based at least in part on the first and second light emission control signals, respectively. ### Claim 5 (depends on 4) The OLED display of claim 4, wherein the odd-numbered light emission control transistor is formed between and electrically connected to the driving transistor and the first OLED and wherein the even-numbered light emission control transistor is formed between and electrically connected to the driving transistor and the second OLED. ### Claim 6 (depends on 4) The OLED display of claim 4, wherein each of the odd-numbered operation control transistor and the even-numbered operation control transistor is formed between and electrically connected to the driving voltage line and the driving transistor. ### Claim 7 (depends on 4) The OLED display of claim 4, further comprising an initialization voltage line configured to apply an initialization voltage, wherein the common pixel driver further comprises an initialization transistor configured to apply the initialization voltage to the driving transistor based at least in part on the previous scan signal, wherein the initialization transistor is formed between and electrically connected to the initialization voltage line and the driving transistor. ### Claim 8 (depends on 3) The OLED display of claim 3, further comprising a third light emission control line configured to apply a third light emission control signal, wherein the selector comprises: an operation control transistor configured to apply the driving voltage to the driving transistor based at least in part on the third light emission control signal; and an odd-numbered light emission control transistor and an even-numbered light emission control transistor respectively configured to apply the driving voltage to the first and second OLEDs based at least in part on the first and second light emission control signals, respectively. ### Claim 9 (depends on 8) The OLED display of claim 8, wherein the odd-numbered light emission control transistor is formed between and electrically connected to the driving transistor and the first OLED and wherein the even-numbered light emission control transistor is formed between and electrically connected to the driving transistor and the second OLED. ### Claim 10 (depends on 8) The OLED display of claim 8, wherein the operation control transistor is formed between and electrically connected to the driving voltage line and the driving transistor. ### Claim 11 (depends on 8) The OLED display of claim 8, further comprising an initialization voltage line configured to apply an initialization voltage, wherein the common pixel driver further comprises an initialization transistor configured to apply the initialization voltage to the driving transistor based at least in part on the previous scan signal, wherein the initialization transistor is formed between the initialization voltage line and the driving transistor. ### Claim 12 An organic light-emitting diode (OLED) display, comprising: a plurality of pixel dots arranged in rows and columns; and a common pixel driver, wherein each pixel dot comprises: a first color pixel including i) a first color odd-numbered pixel and ii) a first color even-numbered pixel formed to be adjacent to each other in a column direction; a second color pixel including a second color odd-numbered pixel and a second color even-numbered pixel; and a third color pixel including a third color odd-numbered pixel and a third color even-numbered pixel, wherein each of the odd-numbered pixels is formed in an odd-numbered row and each of the even-numbered pixels is formed in an even-numbered row; wherein the common pixel driver is configured to drive the odd and even-numbered pixels of one of the first to third color pixels, and wherein the common pixel driver is formed adjacent to the one of the color pixels and a color pixel neighboring the one of the color pixels, and wherein the common pixel driver overlaps the pixels of either the odd-numbered row or the even-numbered row. ### Claim 13 (depends on 12) The OLED display of claim 12, wherein the common pixel driver further comprises a first color common pixel driver, wherein the first color common pixel driver is configured to drive the odd and even-numbered pixels of the first color pixel, and wherein the first color common pixel driver is formed adjacent to the first color even-numbered pixel and ii) a position corresponding to a color pixel neighboring the first color even-numbered pixel. ### Claim 14 (depends on 13) The OLED display of claim 13, wherein the common pixel driver further comprises a second color common pixel driver, wherein the second color common pixel driver is configured to drive the odd and even-numbered pixels of the second color pixel, and wherein the second color common pixel driver is formed adjacent to the second color odd-numbered pixel and a color pixel neighboring the second color odd-numbered pixel. ### Claim 15 (depends on 14) The OLED display of claim 14, wherein the common pixel driver further comprises a third color common pixel driver, wherein the third color common pixel driver is configured to drive the odd and even-numbered pixels of the third color pixel, and wherein the third color common pixel driver is formed adjacent to the third color odd-numbered pixel and a color pixel neighboring the third color odd-numbered pixel. ### Claim 16 An organic light-emitting diode (OLED) display, comprising: a substrate; a plurality of pixels formed over the substrate and arranged in rows and columns, wherein the pixels comprise: a first pixel unit including a first odd-numbered pixel and a first even-numbered pixel respectively formed in a first odd-numbered row and a first even-numbered row; and a second pixel unit including a second odd-numbered pixel and a second even-numbered pixel respectively formed in a second odd-numbered row and a second even-numbered row; a first common pixel driver electrically connected to the first odd-numbered pixel and the first even-numbered pixel, wherein the first common pixel driver is configured to drive the first odd-numbered pixel and the first even-numbered pixel, and a first selector configured to select one of the first odd-numbered pixel and the first even-numbered pixel to be driven by the first common pixel driver; a second common pixel driver electrically connected to the second odd-numbered pixel and the second even-numbered pixel, wherein the second common pixel driver is configured to drive the second odd-numbered pixel and the second even-numbered pixel; and a second selector configured to select one of the second odd-numbered pixel and the second even-numbered pixel to be driven by the second common pixel driver; and a common initialization voltage line formed between the first and second pixel units and respectively electrically connected to the first and second pixel units, wherein the common initialization voltage line is configured to apply an initialization voltage to the first and second pixel units, wherein the first common pixel driver is formed in one of the first odd and even-numbered rows, wherein the second common pixel driver is formed in one of the second odd and even-numbered rows, wherein the first common pixel driver overlaps the pixels of either the first odd-numbered row or the first even-numbered row, and wherein the second common pixel driver overlaps the pixels of either the second odd-numbered row or the second even-numbered row. ### Claim 17 An organic light-emitting diode (OLED) display, comprising: a plurality of pixels arranged in rows and columns, wherein the pixels comprise: a plurality of first pixels formed in odd-numbered rows; and a plurality of second pixels formed in even-numbered row and adjacent to the first pixels in a column direction; and a common pixel driver connected to the first and second pixels, wherein the common pixel driver is configured to alternately drive the first and second pixels, wherein the common pixel driver is formed in a position substantially directly below one of the first and second pixels. ### Claim 18 (depends on 17) The OLED display of claim 17, further comprising a selector configured to select one of the first and second pixels to be driven by the common pixel driver. ### Claim 19 (depends on 18) The OLED display of claim 18, further comprising first and second light emission control lines respectively configured to apply first and second light emission control signals, wherein the selector is further configured to control one of the first and second pixels to be driven by the common pixel driver based at least in part on one of the first and second light emission control signals. ### Claim 20 (depends on 17) The OLED display of claim 17, wherein the common pixel driver is formed in one of the odd and even-numbered rows.