# US 10,504,459 B2 · Over-driving apparatus, storage method thereof, and display device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,459 B2 - Document ID: US10504459B2 - Status: Granted - Kind: B2 - Application number: 15/546,137 - Filed: 2017-05-31 - Published: 2018-11-22 - Granted: 2019-12-10 - Earliest claimed: 2017-05-12 - Assignees: Hkc Corporation Limited; Chongqing Hkc Optoelectronics Technology Co., Ltd. - Applicants: HKC Corporation Limited; Chongqing HKC Optoelectronics Technology Co., Ltd. - Inventors: Yu-Jen Chen - Web page: https://patentgrep.com/patent/US10504459B2 ## CPC - G09G 3/3607: {for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127)} - G09G 3/3677: {suitable for active matrices only} - G09G 3/3688: {suitable for active matrices only} - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2360/12: Frame memory handling - G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data - 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 This application provides an over-driving apparatus, a storage method thereof, and a display device using same. The over-driving apparatus, applied to a liquid crystal display (LCD) panel, is configured to receive multiple pixel grayscale values corresponding to one pixel in multiple images and output multiple over-driving grayscale values correspondingly, wherein the over-driving apparatus includes: a pixel information processing unit, configured to receive a color information of the pixel; a first storage unit, configured to store the pixel grayscale values; a second storage unit, configured to store a difference value of the pixel grayscale values stored in the first storage unit; and an over-driving correspondence selection unit, separately electrically coupled to the pixel information processing unit, the first storage unit, and the second storage unit, and configured to select, according to the color information, received by the pixel information processing unit, of the pixel, whether the pixel grayscale values of the pixel need to correspond to the first storage unit or the second storage unit. ## Claims ### Claim 1 An over-driving apparatus, applied to a liquid crystal display (LCD) panel, and configured to receive a plurality of pixel grayscale values corresponding to one pixel in a plurality of images and output a plurality of over-driving grayscale values correspondingly, wherein the over-driving apparatus comprises: a pixel information processing unit, configured to receive a color information of the pixel, the pixel information processing unit electrically coupled to the liquid crystal display; a first storage unit, configured to store the pixel grayscale values; a second storage unit, configured to store a difference value of the pixel grayscale values stored in the first storage unit; and an over-driving correspondence selection unit, separately electrically coupled to the pixel information processing unit, the first storage unit, and the second storage unit, and configured to select, according to the color information, received by the pixel information processing unit, of the pixel, whether the pixel grayscale values of the pixel need to correspond to the first storage unit or the second storage unit; wherein the over-driving correspondence selection unit further comprises: a querying and comparing unit, which is a comparator device, configured to determine, through query and comparison, whether the pixel should obtain data from the first storage unit to perform over-driving or obtain data from the second storage unit to perform over-driving; wherein the pixel grayscale values stored in the first storage unit are fixed values; wherein the difference value stored in the second storage unit and of the pixel grayscale values stored in the first storage unit is a variable value. ### Claim 2 (depends on 1) The over-driving apparatus according to claim 1, further comprising a plurality of data driving chips, a plurality of gate driving chips, and a power control chip. ### Claim 3 (depends on 2) The over-driving apparatus according to claim 2, further comprising a timing controller, separately electrically connected to the data driving chips, the gate driving chips, and the power control chip. ### Claim 4 A display device, comprising: a first substrate; a second substrate, disposed opposite to the first substrate; a first polarizer, disposed on an external surface of the first substrate; a second polarizer, disposed on an external surface of the second substrate, wherein a polarization direction of the first polarizer is parallel to a polarization direction of the second polarizer; and an over-driving apparatus, comprising: a pixel information processing unit, configured to receive a color information of the pixel, the pixel information processing unit electrically coupled to the liquid crystal display; a first storage unit, configured to store pixel grayscale values; a second storage unit, configured to store a difference value of the pixel grayscale values stored in the first storage unit; and an over-driving correspondence selection unit, separately electrically coupled to the pixel information processing unit, the first storage unit, and the second storage unit, and configured to select, according to the color information, received by the pixel information processing unit, of the pixel, whether the pixel grayscale values of the pixel need to correspond to the first storage unit or the second storage unit, wherein the over-driving apparatus is disposed on the first substrate or on the second substrate; wherein the over-driving correspondence selection unit further comprises: a querying and comparing unit, configured to determine, through query and comparison, whether the pixel should obtain data from the first storage unit to perform over-driving or obtain data from the second storage unit to perform over-driving; wherein the pixel grayscale values stored in the first storage unit are fixed values; wherein the difference value stored in the second storage unit and of the pixel grayscale values stored in the first storage unit is a variable value. ### Claim 5 (depends on 4) The display device according to claim 4, further comprising a plurality of data driving chips, a plurality of gate driving chips, and a power control chip. ### Claim 6 (depends on 5) The display device according to claim 5, further comprising a timing controller, separately electrically connected to the data driving chips, the gate driving chips, and the power control chip.