# US 11,308,863 B2 · Timing controller for controlling emission of emission element for recognizing touch coordinates and electronic device 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 11,308,863 B2 - Document ID: US11308863B2 - Status: Granted - Kind: B2 - Application number: 17/169,667 - Filed: 2021-02-08 - Published: 2021-08-12 - Granted: 2022-04-19 - Earliest claimed: 2020-02-10 - Assignees: Silicon Works Co., Ltd. - Applicants: Silicon Works Co., Ltd. - Inventors: You Jin Kwon; Sang Kwon Kim; Chang Sung Hong; Pyeong Keun Oh; Jun Ho Kwak - Web page: https://patentgrep.com/patent/US11308863B2 ## CPC - G06F 3/04184: {Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G06F 3/03542: {Light pens for emitting or receiving light} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 3/042: by opto-electronic means - G09G 2310/027: Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 Disclosed is a timing controller including a coordinate data generation circuit configured to generate X coordinate emission data for acquiring X coordinates and Y coordinate emission data for acquiring Y coordinates of the touch coordinates, a selection circuit configured to time-divide 1 frame duration, to output image data to a display driving circuit during a display field, to output the X coordinate emission data to the display driving circuit during an X coordinate field, and to output the Y coordinate emission data to the display driving circuit during a Y coordinate field, and a control data generation circuit configured to generate source control data and gate control data for outputting the image data, the X coordinate emission data, and the Y coordinate emission data to a display panel and to output the source control data and the gate control data to the display driving circuit. ## Claims ### Claim 1 A timing controller for controlling emission of an emission element for recognizing touch coordinates, the timing controller comprising: a coordinate data generation circuit configured to generate X coordinate emission data for acquiring X coordinates and Y coordinate emission data for acquiring Y coordinates of the touch coordinates; a selection circuit configured to time-divide 1 frame duration, to output image data to a display driving circuit during a display field, to output the X coordinate emission data to the display driving circuit during an X coordinate field, and to output the Y coordinate emission data to the display driving circuit during a Y coordinate field; and a control data generation circuit configured to generate source control data and gate control data for outputting the image data, the X coordinate emission data, and the Y coordinate emission data to a display panel and to output the source control data and the gate control data to the display driving circuit, wherein the emission element is an organic light emitting diode (OLED). ### Claim 2 (depends on 1) The timing controller of claim 1, wherein, in the 1 frame duration, the X coordinate field is executed after the display field is executed, and the Y coordinate field is executed after the X coordinate field is executed. ### Claim 3 (depends on 1) The timing controller of claim 1, wherein, in the 1 frame duration, the Y coordinate field is executed after the display field is executed, and the X coordinate field is executed after the Y coordinate field is executed. ### Claim 4 (depends on 1) The timing controller of claim 1, wherein, in the 1 frame duration, the Y coordinate field is executed after the X coordinate field is executed, and the display field is executed after the Y coordinate field is executed. ### Claim 5 (depends on 1) The timing controller of claim 1, wherein, in the 1 frame duration, the X coordinate field is executed after the Y coordinate field is executed, and the display field is executed after the X coordinate field is executed. ### Claim 6 (depends on 1) The timing controller of claim 1, wherein: the display panel comprises w data lines and h gate lines; the source control data comprises a first data output enable signal comprising m data pulses for allowing each pixel to emit light in units of i (i being a natural number equal to or greater than 1) data lines using a first data voltage corresponding to the X coordinate emission data during the X coordinate field; and the gate control data comprises a first gate output enable signal for simultaneously outputting gate pulses to the h gate lines in response to each of the m data pulses. ### Claim 7 (depends on 1) The timing controller of claim 1, wherein: the display panel comprises w data lines and h gate lines; the source control data comprises a second data output enable signal comprising n data pulses for allowing each pixel to emit light in units of j (j being a natural number equal to or greater than 1) gate lines using a second data voltage corresponding to the Y coordinate emission data during the Y coordinate field; and the gate control data comprises a second gate output enable signal for sequentially outputting gate pulses synchronized with the n data pulses, respectively, in units of j gate lines during the Y coordinate field. ### Claim 8 (depends on 1) The timing controller of claim 1, wherein: the display panel comprises w data lines and h gate lines; the source control data comprises a third data output enable signal for allowing each pixel to sequentially emit light in units of 1 gate line during the display field; and the gate control data comprises a third gate output enable signal for allowing each pixel to sequentially emit light in units of 1 gate line during the display field. ### Claim 9 (depends on 1) The timing controller of claim 1, wherein the X coordinate emission data and the Y coordinate emission data have a grayscale value equal to or less than a predetermined reference to prevent emission of a pixel based on the X coordinate emission data and the Y coordinate emission data from being perceived by a user's eye. ### Claim 10 (depends on 1) The timing controller of claim 1, wherein the X coordinates are determined using a detection timing at which an emission signal due to emission of a pixel that comes into contact with a pen during the X coordinate field is detected, and the Y coordinates are determined using a detection timing at which an emission signal due to emission of the pixel that comes into contact with the pen during Y coordinate field is detected. ### Claim 11 An electronic device comprising: a display panel comprising a plurality of pixels; a timing controller configured to time-divide 1 frame duration, to generate X coordinate emission data for acquiring X coordinates of touch coordinates and first control data during an X coordinate field, to generate Y coordinate emission data for acquiring Y coordinates and second control data during a Y coordinate field, and to generate third control data for outputting image data input from an outside during a display field; and a display driving circuit configured to allow the pixel to emit light based on the X coordinate emission data according to the first control data during the X coordinate field, to allow the pixel to emit light based on the Y coordinate emission data according to the second control data during the Y coordinate field, and to allow the pixel to emit light based on the image data according to the third control data during the display field, wherein each pixel comprises an organic light emitting diode (OLED). ### Claim 12 (depends on 11) The electronic device of claim 11, wherein, in the 1 frame duration, the X coordinate field is executed after the display field is executed, and the Y coordinate field is executed after the X coordinate field is executed. ### Claim 13 (depends on 11) The electronic device of claim 11, wherein, in the 1 frame duration, the Y coordinate field is executed after the display field is executed, and the X coordinate field is executed after the Y coordinate field is executed. ### Claim 14 (depends on 11) The electronic device of claim 11, wherein, in the 1 frame duration, the Y coordinate field is executed after the X coordinate field is executed, and the display field is executed after the Y coordinate field is executed. ### Claim 15 (depends on 11) The electronic device of claim 11, wherein, in the 1 frame duration, the X coordinate field is executed after the Y coordinate field is executed, and the display field is executed after the X coordinate field is executed. ### Claim 16 (depends on 11) The electronic device of claim 11, wherein: the display panel comprises w data lines and h gate lines; the first control data comprises a first data output enable signal comprising m data pulses for allowing each pixel to emit light in units of i (i being a natural number equal to or greater than 1) data lines using a first data voltage corresponding to the X coordinate emission data during the X coordinate field, and a first gate output enable signal for simultaneously outputting gate pulses to the h gate lines in response to each of the m data pulses; and the m is determined as a value obtained by dividing an X-direction resolution value of the display panel by an X coordinate precision value, and the X coordinate precision value is determined as a number of X-direction pixels to be recognized by a pen at one time among pixels included in the display panel. ### Claim 17 (depends on 11) The electronic device of claim 11, wherein: the display panel comprises w data lines and h gate lines; the second control data comprises a second data output enable signal comprising n data pulses for allowing each pixel to emit light in units of j (j being a natural number equal to or greater than 1) gate lines using a second data voltage corresponding to the Y coordinate emission data during the Y coordinate field, and a second gate output enable signal for sequentially outputting gate pulses synchronized with the n data pulses, respectively, in units of j gate lines during the Y coordinate field; and the n is determined as a value obtained by dividing a Y-direction resolution value of the display panel by a Y coordinate precision value, and the Y coordinate precision value is determined as a number of Y-direction pixels to be recognized by a pen at one time among pixels included in the display panel. ### Claim 18 (depends on 11) The electronic device of claim 11, further comprising: a pen configured to acquire the touch coordinates via contact with the display panel, wherein the pen determines the X coordinates using a first detection timing at which an emission signal of a pixel that comes into contact with the pen is detected during the X coordinate field, and determines the Y coordinates using a second detection timing at which an emission signal of a pixel that comes into contact with the pen is detected during the Y coordinate field. ### Claim 19 (depends on 18) The electronic device of claim 18, wherein the pen determines an ordinal number of a first target data pulse corresponding to a first detection timing of the emission signal among data pulses included in a first data output enable signal during the X coordinate field as the X coordinates, and determines an ordinal number of a second target data pulse corresponding to a second detection timing of the emission signal among data pulses included in a second data output enable signal in the Y coordinate field as the Y coordinates of the touch coordinates. ### Claim 20 (depends on 19) The electronic device of claim 19, wherein the ordinal number of the first target data pulse is determined using a time difference to the first detection timing from a rising edge of a vertical synchronization signal, and the ordinal number of the second target data pulse is determined using a time difference to the second detection timing from the rising edge of the vertical synchronization signal.