# US 12,183,267 B2 · Display apparatus including driving devices that bypass input common command data, and image display apparatus including same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,267 B2 - Document ID: US12183267B2 - Status: Granted - Kind: B2 - Application number: 18/285,973 - Filed: 2021-04-08 - Published: 2024-06-06 - Granted: 2024-12-31 - Earliest claimed: 2021-04-08 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Sungoh Yang; Jonghyug Bae; Yanghyun Kim; Woosik Jung; Yonghyun Kim; Chansic Park; Myungdeok Bae - Web page: https://patentgrep.com/patent/US12183267B2 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G09G 3/2085: {Special arrangements for addressing the individual elements of the matrix, other than by driving respective rows and columns in combination} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 3/3266: Details of drivers for scan electrodes - G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions - G09G 2300/0426: Layout of electrodes and connections - 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 2310/0208: using active addressing - G09G 2310/0221: with use of split matrices (G09G3/3644 and G09G3/3666 take precedence) - G09G 2310/0275: Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current - G09G 2310/0286: Details of a shift registers arranged for use in a driving circuit - G09G 2360/02: Graphics controller able to handle multiple formats, e.g. input or output formats - 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 A display apparatus in one example can include a plurality of light emitting diodes, and a plurality of driving devices to output driving signals for driving the plurality of light emitting diodes. Each of the plurality of driving devices bypasses input common command data and outputs the common command data to an adjacent driving device. Accordingly, a transmission period of data transmitted to the plurality of driving devices can be reduced. ## Claims ### Claim 1 A display apparatus comprising: a plurality of light emitting diodes; and a plurality of driving devices to output driving signals for driving the plurality of light emitting diodes, wherein each of the plurality of driving devices bypasses input common command data and outputs the common command data to an adjacent driving device, and wherein the common command data includes scan setting data for scan setting in the plurality of driving devices. ### Claim 2 A display apparatus comprising: a plurality of light emitting diodes; and a plurality of driving devices to output driving signals for driving the plurality of light emitting diodes, wherein each of the plurality of driving devices bypasses input common command data and outputs the common command data to an adjacent driving device, wherein each of the plurality of driving devices includes: a first shift register to store command data among data input through a data input terminal, and a second shift register to store image data among the data input through the data input terminal, and wherein in case in which the common command data is input through the data input terminal, each of the plurality of driving devices outputs the common command data to an outside through a first path without passing through the first shift register, and stores the common command data in the first shift register through a second path. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein each of the plurality of driving devices: includes the data input terminal, a control input terminal, a clock input terminal, a data output terminal, a control output terminal, and a clock output terminal, bypasses the common command data input through the data input terminal, and outputs the common command data to the adjacent driving device through the data output terminal. ### Claim 4 (depends on 3) The display apparatus of claim 3, wherein a length of control data input through the control input terminal is fixed, and a length of the image data input through the data input terminal is changed. ### Claim 5 (depends on 2) The display apparatus of claim 2, wherein in case in which individual command data is input through the data input terminal and the individual command data corresponds to identification information, each of the plurality of driving devices stores the individual command data in the first shift register, and wherein in case in which individual command data is input through the data input terminal and the individual command data does not correspond to the identification information, each of the plurality of driving devices bypasses the individual command data and outputs the individual command data to the adjacent driving device. ### Claim 6 (depends on 2) The display apparatus of claim 2, wherein each of the plurality of driving devices further includes the data input terminal, a control input terminal, a clock input terminal, a data output terminal, a control output terminal, and a clock output terminal, wherein each of the plurality of driving devices: outputs the common command data input into the data input terminal to the adjacent driving device by bypassing the first shift register without passing through the first shift register in case in which a first signal is input into the control input terminal, and outputs the data input into the data input terminal to the adjacent driving device by bypassing the second shift register in case in which a second signal is input into the control input terminal. ### Claim 7 (depends on 6) The display apparatus of claim 6, wherein each of the plurality of driving devices outputs a driving signal for driving a corresponding one of the light emitting diodes based on the image data stored in the second shift register in case in which a third signal is input into the control input terminal after the second signal. ### Claim 8 (depends on 2) The display apparatus of claim 2, wherein each of the plurality of driving devices outputs first image data of a first number of bits to the adjacent driving device in case in which input first image data includes the first number of bits, and wherein each of the plurality of driving devices outputs second image data of a second number of bits to the adjacent driving device in case in which input second image data includes bits of a second number larger than the first number. ### Claim 9 (depends on 2) The display apparatus of claim 2, wherein each of the plurality of driving devices: includes a shift register to store the image data among the input data, and outputs image data corresponding to bits to the adjacent driving device without adding dummy bits to the image data in case in which a number of bits of the image data is less than a than the number of shift registers. ### Claim 10 (depends on 2) The display apparatus of claim 2, wherein in case in which a number of bits of the input image data is changed, each of the plurality of driving devices stores the image data in a shift register therein and outputs the image data having changed bits to the adjacent driving device by passing through the shift register. ### Claim 11 (depends on 2) The display apparatus of claim 2, further comprising: a host device to output the common command data to the plurality of driving devices. ### Claim 12 A display apparatus comprising: a plurality of light emitting diodes; and a plurality of driving devices to output driving signals for driving the plurality of light emitting diodes, wherein each of the plurality of driving devices bypasses input common command data and outputs the common command data to an adjacent driving device, wherein each of the plurality of driving devices: includes a data input terminal, a control input terminal, a clock input terminal, a data output terminal, a control output terminal, and a clock output terminal, and bypasses the common command data input through the data input terminal, and outputs the common command data to the adjacent driving device through the data output terminal, wherein each of the plurality of driving devices further includes: a scan switching element to switch based on a scan signal for driving the plurality of light emitting diodes, and a data switching element to switch based on a data signal, and wherein each of the plurality of driving devices drives the scan switching element based on a clock signal input through the clock input terminal and drives the data switching element based on image data input through the data input terminal. ### Claim 13 (depends on 12) The display apparatus of claim 12, wherein each of the plurality of driving devices outputs the driving signal flowing on the data switching element, and drives a corresponding one of the light emitting diodes.