# US 11,114,006 B2 · Display device, drive method therefor, and drive system therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,006 B2 - Document ID: US11114006B2 - Status: Granted - Kind: B2 - Application number: 16/756,891 - Filed: 2018-03-13 - Published: 2021-07-01 - Granted: 2021-09-07 - Earliest claimed: 2017-10-24 - Assignees: Hkc Corporation Limited - Applicants: Hkc Corporation Limited - Inventors: Beizhou Huang - Web page: https://patentgrep.com/patent/US11114006B2 ## CPC - 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 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2330/06: Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation - 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 device, a drive method therefor, and a drive system therefor are provided by embodiments of the present application. The drive method includes: detecting whether a spectrum of a drive signal is spread when the drive signal is received, and the drive signal is configured to drive the display panel; outputting a clock signal output from the control module to the source drive module if the spectrum of the drive signal is spread; performing spectrum spread on the clock signal according to a preset spread spectrum ratio if the spectrum of the drive signal is not spread; and outputting the clock signal with the spread spectrum to the source drive module. ## Claims ### Claim 1 A drive method for a display device, wherein the display device comprises a control module, a source drive module, and a display panel; and the drive method comprises: detecting whether a spectrum of a drive signal is spread when the drive signal is received, and the drive signal is configured to drive the display panel; outputting a clock signal output from the control module to the source drive module if the spectrum of the drive signal is spread; performing spectrum spread on the clock signal according to a preset spread spectrum ratio if the spectrum of the drive signal is not spread; and outputting the clock signal with the spread spectrum to the source drive module; wherein, the step of detecting whether the spectrum of the drive signal is spread comprises: detecting whether a frequency of the drive signal is consistent with a frequency of a preset drive signal; determining that the spectrum of the drive signal is not spread if the frequency of the drive signal is consistent with the frequency of the preset drive signal; and determining that the spectrum of the drive signal is spread if the frequency of the drive signal is not consistent with the frequency of the preset drive signal. ### Claim 2 (depends on 1) The drive method of claim 1, wherein the preset spread spectrum ratio ranges between 2% and 5%. ### Claim 3 (depends on 1) The drive method of claim 1, wherein the step of detecting whether the frequency of the drive signal is consistent with the frequency of the preset drive signal comprises: detecting whether a variation rate of the frequency of the drive signal relative to the frequency of the preset drive signal is greater than a preset threshold value; determining that the drive signal is not consistent with the frequency of the preset drive signal if the variation rate is greater than the preset threshold value; and determining that the drive signal is consistent with the frequency of the preset drive signal if the variation rate is smaller than or equal to the preset threshold value. ### Claim 4 (depends on 3) The drive method of claim 3, wherein the preset threshold value ranges between 2% and 5%. ### Claim 5 (depends on 1) The drive method of claim 1, before outputting the clock signal output from the control module to the source drive module, further comprising: detecting a spread spectrum ratio of the drive signal; entering the operation of outputting the clock signal output from the control module to the source drive module if the spread spectrum ratio is smaller or equal to the preset threshold value; and sending a prompt signal if the spread spectrum ratio is greater than the preset threshold value. ### Claim 6 (depends on 5) The drive method of claim 5, wherein the preset threshold value ranges between 2% and 5%. ### Claim 7 (depends on 1) The drive method of claim 1, wherein the step of detecting whether the spectrum of the drive signal is spread comprises: detecting whether the drive signal is a variable frequency signal; determining the spectrum of the drive signal is not spread if the drive signal is a constant frequency signal; and determining the spectrum of the drive signal is spread if the drive signal is a variable frequency signal. ### Claim 8 (depends on 1) The drive method of claim 1, wherein the control module is connected with the source drive module, the source drive module is connected with the display panel, the control module is a display drive board, the source drive module is a film source drive chip, and the display panel is any one selected from the group consisting of a thin film transistor liquid crystal display, an electro luminescence display, and a quantum dot light emitting diode display panel. ### Claim 9 A drive system for a display device, wherein the display device comprises: a control module, a source drive module, and a display panel; and the drive system comprises: a spread spectrum detection module, configured to detect whether a spectrum of a drive signal is spread when the drive signal is received, and the drive signal is configured to drive the display panel; a spread spectrum determination module, configured to output a clock signal output from the control module to the source drive module if the spectrum of the drive signal is spread; a spread spectrum module, configured to perform spectrum spread on the clock signal according to a preset spread spectrum ratio if the spectrum of the drive signal is not spread; and a data output module, configured to output the clock signal with the spread spectrum to the source drive module; wherein the spread spectrum detection module comprises: a first spread spectrum detection unit, configured to detect whether a frequency of the drive signal is consistent with a frequency of a preset drive signal; a first determination unit, configured to determine that the spectrum of the drive signal is not spread if the frequency of the drive signal is consistent with the frequency of the preset drive signal; and a second determination unit, configured to determine that the spectrum of the drive signal is spread if the frequency of the drive signal is not consistent with the frequency of the preset drive signal. ### Claim 10 (depends on 9) The drive system of claim 9, wherein the preset spread spectrum ratio ranges between 2% and 5%. ### Claim 11 (depends on 9) The drive system of claim 9, wherein the first spread spectrum detection unit is configured to: detect whether a variation rate of the frequency of the drive signal relative to the frequency of the preset drive signal is greater than a preset threshold value; determine that the drive signal is not consistent with the frequency of the preset drive signal if the variation rate is greater than the preset threshold value; and determine that the drive signal is consistent with the frequency of the preset drive signal if the variation rate is smaller than or equal to the preset threshold value. ### Claim 12 (depends on 11) The drive system of claim 11, wherein the preset threshold value ranges between 2% and 5%. ### Claim 13 (depends on 9) The drive system of claim 9, wherein the spread spectrum detection module comprises: a second spread spectrum detection unit, configured to detect a spread spectrum ratio of the drive signal; a data output unit, configured to enter the operation of outputting the clock signal output from the control module to the source drive module if the spread spectrum ratio is smaller or equal to the preset threshold value; a prompt unit, configured to send a prompt signal if the spread spectrum ratio is greater than the preset threshold value. ### Claim 14 (depends on 13) The drive system of claim 13, wherein the preset threshold value ranges between 2% and 5%. ### Claim 15 (depends on 9) The drive system of claim 9, wherein the spread spectrum detection module comprises: a third spread spectrum detection unit, configured to detect whether the drive signal is a variable frequency signal; a third determination unit, configured to determine the spectrum of the drive signal is not spread if the drive signal is a constant frequency signal; and a fourth determination unit, configured to determine the spectrum of the drive signal is spread if the drive signal is a variable frequency signal. ### Claim 16 (depends on 9) The drive system of claim 9, wherein the control module is connected with the source drive module, the source drive module is connected with the display panel, the control module is a display drive board, the source drive module is a film source drive chip, and the display panel is any one selected from the group consisting of a thin film transistor liquid crystal display, an electro luminescence display, and a quantum dot light emitting diode display panel. ### Claim 17 A drive method for a display device, wherein the display device comprises: a control module, a source drive module, and a display panel; and the drive method comprises: detecting whether a drive signal is a variable frequency signal when the drive signal is received, and the drive signal is configured to drive the display panel; outputting a clock signal output from the control module to the source drive module if the drive signal is a constant frequency signal; performing spectrum spread on the clock signal according to a preset spread spectrum ratio if the drive signal is a variable frequency signal; and outputting the clock signal with the spread spectrum to the source drive module. ### Claim 18 (depends on 17) The drive method of claim 17, wherein the control module is connected with the source drive module, the source drive module is connected with the display panel, the control module is a display drive board, the source drive module is a film source drive chip, the display panel is any one selected from the group consisting of a thin film transistor liquid crystal display, an electro luminescence display, and a quantum dot light emitting diode display panel.