# US 11,114,014 B2 · Data driving device and display 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 11,114,014 B2 - Document ID: US11114014B2 - Status: Granted - Kind: B2 - Application number: 16/807,505 - Filed: 2020-03-03 - Published: 2020-09-10 - Granted: 2021-09-07 - Earliest claimed: 2019-03-05 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Dong-Eup Lee; Ji-Hyun Ka; Ki Myeong Eom - Web page: https://patentgrep.com/patent/US11114014B2 ## CPC - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/3266: Details of drivers for scan electrodes - G09G 3/3275: Details of drivers for data electrodes - G09G 3/3677: {suitable for active matrices only} - G09G 3/3688: {suitable for active matrices only} - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve - 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 A display device includes a display unit including first color subpixels, second color subpixels, and third color subpixels, a scan driver for applying scan signals to scan lines connected to the first color subpixels, the second color subpixels, and the third color subpixels, a switch circuit for selecting first data lines connected to the first color subpixels and the second color subpixels for a first section, and selecting second data lines connected to the third color subpixels for a second section after the first section, and a data driver for applying data signals corresponding to the third color subpixels to the switch circuit for a third section between the first section and the second section, and applying data signals corresponding to the first color subpixels and the second color subpixels to the switch circuit for a fourth section after the second section. ## Claims ### Claim 1 A display device comprising: a display unit including a plurality of first color subpixels, a plurality of second color subpixels, and a plurality of third color subpixels; a scan driver configured to apply scan signals to a plurality of scan lines connected to the plurality of first color subpixels, the plurality of second color subpixels, and the plurality of third color subpixels; a switch circuit configured to select a plurality of first data lines connected to the plurality of first color subpixels and the plurality of second color subpixels for a first section in each horizontal period, each of the plurality of first data lines coupled to at least one of the plurality of first color subpixels and at least one of the plurality of second color subpixels, and to select a plurality of second data lines connected to the plurality of third color subpixels for a second section after the first section in each horizontal period; and a data driver configured to apply data signals corresponding to the plurality of third color subpixels to the switch circuit for a third section between the first section and the second section in each horizontal period, and apply data signals corresponding to the plurality of first color subpixels and the plurality of second color subpixels to the switch circuit for a fourth section after the second section in each horizontal period. ### Claim 2 (depends on 1) The display device of claim 1, wherein the data driver includes: a shift register configured to shift a source start pulse and sequentially generate a sampling pulse corresponding to source sampling clock signals; sampling latches configured to sequentially store first data corresponding to the plurality of first color subpixels and the plurality of second color subpixels and second data corresponding to the plurality of third color subpixels, in response to the sampling pulse; holding latches configured to substantially simultaneously receive the first data stored in the sampling latches and store the same corresponding to a first source output enable signal, and substantially simultaneously receive the second data stored in the sampling latches and store the same corresponding to a second source output enable signal; and a digital-analog converter configured to generate data signals corresponding to the plurality of first color subpixels and the plurality of second color subpixels by using the first data stored in the holding latches, and generate data signals corresponding to the plurality of third color subpixels by using the second data. ### Claim 3 (depends on 2) The display device of claim 2, wherein the sampling latches include: first sampling latches configured to store the first data corresponding to the plurality of first color subpixels and the plurality of second color subpixels; and second sampling latches configured to store the second data corresponding to the plurality of third color subpixels, and wherein the shift register applies the sampling pulse to the first sampling latches and applies the sampling pulse to the second sampling latches. ### Claim 4 (depends on 3) The display device of claim 3, wherein the holding latches include: first holding latches connected to the first sampling latches; and second holding latches connected to the second sampling latches, and wherein the first source output enable signal is applied to the first holding latches when the sampling pulse is applied to the first sampling latches, and the second source output enable signal is applied to the second holding latches when the sampling pulse is applied to the second sampling latches. ### Claim 5 (depends on 2) The display device of claim 2, wherein the data driver further includes: a multiplexer configured to selectively output one of a data signal corresponding to the plurality of first color subpixels and the plurality of second color subpixels and a data signal corresponding to the plurality of third color subpixels in response to a control signal; and an output buffer configured to transmit the data signal output by the multiplexer to a data line. ### Claim 6 (depends on 5) The display device of claim 5, wherein the multiplexer outputs the data signal corresponding to the plurality of third color subpixels for a third section between the first section and the second section in each horizontal period, and outputs the data signal corresponding to the plurality of first color subpixels and the plurality of second color subpixels for a fourth section after the second section in each horizontal period in response to the control signal. ### Claim 7 (depends on 2) The display device of claim 2, wherein the source start pulse is synchronized with each horizontal period and is applied to the shift register. ### Claim 8 (depends on 2) The display device of claim 2, wherein the digital-analog converter converts the first data and the second data into data signals with analog voltages by using at least one of a plurality of input gamma voltages. ### Claim 9 (depends on 1) The display device of claim 1, wherein the switch circuit includes: first transistors connecting the data driver to the plurality of first data lines corresponding to a first selection signal; and second transistors connecting the data driver to the plurality of second data lines corresponding to a second selection signal. ### Claim 10 (depends on 9) The display device of claim 9, wherein the first transistors and the second transistors are provided on a same substrate as the display unit. ### Claim 11 (depends on 1) The display device of claim 1, wherein the scan driver sequentially applies a scan signal having an enable level to the plurality of scan lines, the scan signal has the enable level for a fifth section after the first section in each horizontal period, and at least part of the fifth section and the second section overlap each other. ### Claim 12 (depends on 11) The display device of claim 11, wherein the first section is shorter than the second section. ### Claim 13 (depends on 1) The display device of claim 1, wherein the display unit includes the plurality of scan lines, the plurality of first data lines, and the plurality of second data lines, and the plurality of first data lines and the plurality of second data lines extend in a first direction and are alternately provided in a second direction traversing the first direction. ### Claim 14 A data driving device configured to output data signals to a switch circuit configured to select a plurality of first data lines connected to a plurality of first color subpixels and a plurality of second color subpixels for a first section in each horizontal period, each of the plurality of first data lines coupled to at least one of the plurality of first color subpixels and at least one of the plurality of second color subpixels, and select a plurality of second data lines connected to a plurality of third color subpixels for a second section after the first section, comprising: a shift register configured to shift a source start pulse and sequentially generate a sampling pulse corresponding to source sampling clock signals; sampling latches configured to sequentially store first data corresponding to the plurality of first color subpixels and the plurality of second color subpixels and second data corresponding to the plurality of third color subpixels, in response to the sampling pulse; holding latches configured to substantially simultaneously receive the first data stored in the sampling latches corresponding to a first source output enable signal and substantially simultaneously receiving the second data stored in the sampling latches corresponding to a second source output enable signal; and a digital-analog converter configured to generate a data signal corresponding to the plurality of first color subpixels and the plurality of second color subpixels by using the first data stored in the holding latches, and generating a data signal corresponding to the plurality of third color subpixels by using the second data. ### Claim 15 (depends on 14) The data driving device of claim 14, wherein the sampling latches include: first sampling latches configured to store the first data corresponding to the plurality of first color subpixels and the plurality of second color subpixels; and second sampling latches configured to store the second data corresponding to the plurality of third color subpixels, and wherein the shift register applies the sampling pulse to the second sampling latches after applying the sampling pulse to the first sampling latches. ### Claim 16 (depends on 15) The data driving device of claim 15, wherein the holding latches include: first holding latches connected to the first sampling latches; and second holding latches connected to the second sampling latches, and wherein the first source output enable signal is applied to the first holding latches after the sampling pulse is applied to the first sampling latches and the second source output enable signal is applied to the second holding latches after the sampling pulse is applied to the second sampling latches. ### Claim 17 (depends on 14) The data driving device of claim 14, further comprising: a multiplexer configured to selectively output one of a data signal corresponding to the plurality of first color subpixels and the plurality of second color subpixels and a data signal corresponding to the plurality of third color subpixels in response to a control signal; and an output buffer configured to transmit the data signal output by the multiplexer to a data line. ### Claim 18 (depends on 17) The data driving device of claim 17, wherein the multiplexer outputs the data signal corresponding to the plurality of third color subpixels for a third section between the first section and the second section in each horizontal period, and outputs the data signal corresponding to the plurality of first color subpixels and the plurality of second color subpixels for a fourth section after the second section in each horizontal period in response to the control signal. ### Claim 19 (depends on 14) The data driving device of claim 14, wherein the source start pulse is synchronized with each horizontal period and is applied to the shift register. ### Claim 20 (depends on 14) The data driving device of claim 14, wherein the digital-analog converter converts the first data and the second data into data signals with analog voltages by using at least one of a plurality of input gamma voltages.