# US 2019/0318692 A1 · Display system with controllable connection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0318692 A1 - Document ID: US20190318692A1 - Status: Published application - Kind: A1 - Application number: 16/381,577 - Filed: 2019-04-11 - Published: 2019-10-17 - Earliest claimed: 2018-04-11 - Assignees: Ignis Innovation Inc. - Applicants: Ignis Innovation Inc. - Inventors: Qing Jiang; Junhu He; Hongxin Liu; Shuenn-Jiun Tang; Jafar Talebzadeh - Web page: https://patentgrep.com/patent/US20190318692A1 ## CPC - G09G 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/131: Interconnections, e.g. wiring lines or terminals - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - 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 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 2320/0295: by monitoring each display pixel - G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements - 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) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Display systems including novel Active Matrix Organic Light Emitting Diode (AMOLED) displays with controllable pixel-driver connections and the measuring of pixel voltage or current while controlling the controllable pixel-driver connections are disclosed. A single driver node is connected to a first node of a pixel, while a second connection from the single driver node to a second node of the pixel is disconnected using at least one peripheral controllable switch. ## Claims ### Claim 1 A display system comprising: a plurality of pixels arranged in rows and columns; at least one driver for driving the plurality of pixels; a controller coupled to the at least one driver for controlling the at least one driver's driving of the plurality of pixels; a first signal line coupling a first node of a first pixel of the plurality of pixels to a node of the at least one driver; and a second signal line coupling a second node of the first pixel to the node of the at least one driver via a controllable switch coupled along the second signal line and located outside of the plurality of pixels, the controllable switch for coupling the second signal line to the node of the at least one driver and for decoupling the second signal line from the node of the at least one driver. ### Claim 2 (depends on 1) The display system of claim 1, wherein the node of the at least one driver comprises a supply voltage output of the at least one driver for providing a supply voltage to the first pixel. ### Claim 3 (depends on 1) The display system of claim 1, wherein one of the first signal line and the second signal line comprises a row signal line, and the other of the first signal line and the second signal line comprises a column signal line. ### Claim 4 (depends on 1) The display system of claim 1, wherein the node of the at least one driver comprises a conductive ring surrounding the plurality of pixels, wherein the first signal line is coupled to the conductive ring, and wherein the second signal line is coupled to the conductive ring via the controllable switch. ### Claim 5 (depends on 1) The display system of claim 1, wherein the second signal line extends adjacent to and beyond the first pixel, wherein the second signal line is coupled to multiple pixels of the plurality of pixels, and wherein an end of the second signal line opposite from the controllable switch is uncoupled. ### Claim 6 (depends on 1) The display system of claim 1, wherein the controller is adapted to control the at least one driver to send switch control signals over a switch control line coupled to the controllable switch. ### Claim 7 (depends on 1) The display system of claim 1, wherein the plurality of pixels comprise OLED pixels. ### Claim 8 (depends on 4) The display system of claim 4, wherein the first signal line spans the conductive ring and the second signal line is coupled at one end to the controllable switch and coupled at an opposite end to a second controllable switch coupled to the conductive ring. ### Claim 9 (depends on 2) The display system of claim 2, wherein one of the first signal line and the second signal line comprises a row signal line, and the other of the first signal line and the second signal line comprises a column signal line. ### Claim 10 (depends on 9) The display system of claim 9, wherein the node of the at least one driver comprises a conductive ring surrounding the plurality of pixels, wherein the first signal line is coupled to the conductive ring, and wherein the second signal line is coupled to the conductive ring via the controllable switch. ### Claim 11 (depends on 10) The display system of claim 10, wherein the first signal line and the second signal line extend adjacent to and beyond the first pixel, wherein each of the first signal line and the second signal line are coupled to multiple pixels of the plurality of pixels. ### Claim 12 (depends on 11) The display system of claim 11, wherein the plurality of pixels comprise OLED pixels. ### Claim 13 (depends on 12) The display system of claim 12, wherein the first signal line spans the conductive ring and the second signal line is coupled at one end to the controllable switch and coupled at an opposite end to a second controllable switch coupled to the conductive ring. ### Claim 14 (depends on 13) The display system of claim 13, wherein the controller is adapted to control the at least one driver to send switch control signals over at least one switch control line coupled to the controllable switch and the second controllable switch. ### Claim 15 (depends on 14) The display system of claim 14, wherein the first signal line is one of a first plurality of signal lines spanning the conductive ring in a first direction and the second signal line is one of a second plurality of signal lines spanning the conductive ring in a second direction, the first plurality of signal lines, the second plurality of signal lines, and the conductive ring forming a disconnected grid structure. ### Claim 16 (depends on 15) The display system of claim 15, further comprising a readout circuit for reading a voltage or current from the first pixel over a data line coupled to the first pixel. ### Claim 17 (depends on 16) The display system of claim 16, wherein the controller is adapted to control the controllable switch and the second controllable switch to turn on and connect the second node of the first pixel to the supply voltage during an emission cycle, and wherein the controller is adapted to control the controllable switch and the second controllable switch to turn off and disconnect the second node of the first pixel from the supply voltage while reading a voltage or current from the first pixel over the data line.