# US 10,762,826 B2 · Pixel circuit, display panel, display device and driving method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,762,826 B2 - Document ID: US10762826B2 - Status: Granted - Kind: B2 - Application number: 16/329,790 - Filed: 2018-03-26 - Published: 2019-06-27 - Granted: 2020-09-01 - Earliest claimed: 2017-07-13 - Assignees: Beijing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Beijing Boe Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Inventors: Xiurong Wang; Lingyun Shi; Wei Sun; Xue Dong; Dong Chen; Shengji Yang - Web page: https://patentgrep.com/patent/US10762826B2 ## CPC - G09G 3/2074: {using sub-pixels} - G02F 1/136277: {formed on a semiconductor substrate, e.g. of silicon} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3275: Details of drivers for data electrodes - G09G 3/36: using liquid crystals - 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 3/3685: {Details of drivers for data electrodes} - G09G 3/3688: {suitable for active matrices only} - G09G 3/3696: {Generation of voltages supplied to electrode drivers} - G09G 2300/0408: Integration of the drivers onto the display substrate - 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 2300/0857: Static memory circuit, e.g. flip-flop - G09G 2310/027: Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters - G09G 2310/0291: Details of output amplifiers or buffers arranged for use in a driving circuit - G09G 2310/04: Partial updating of the display screen - G09G 2320/103: Detection of image changes, e.g. determination of an index representative of the image change - G09G 2330/021: Power management, e.g. power saving - G09G 2330/028: Generation of voltages supplied to electrode drivers in a matrix display other than LCD - G09G 2360/128: Frame memory using a Synchronous Dynamic RAM [SDRAM] - 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) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract A pixel circuit, a display panel, a display device and a driving method thereof are provided. The display panel includes a silicon substrate and a plurality of display units and a plurality of storage units fabricated on the silicon substrate. The plurality of storage units correspond to the plurality of display units one to one, and the plurality of storage units are respectively configured to receive and store display data of the plurality of display units corresponding to the plurality of storage units. ## Claims ### Claim 1 A display panel, comprising: a silicon substrate, a plurality of display units and a plurality of storage units fabricated on the silicon substrate; and a data driving circuit disposed on the silicon substrate; wherein the plurality of storage units correspond to the plurality of display units one to one, and the plurality of storage units are respectively configured to receive and store display data of the plurality of display units corresponding to the plurality of storage units; the data driving circuit is connected with the display units and the storage units; and the data driving circuit is configured to load the display data stored in the storage units into the display units; the data driving circuit comprises a gamma voltage circuit, a plurality of switch circuits, and a plurality of decoding circuits; each decoding circuit of the decoding circuits is electrically connected with one storage unit, one switch circuit and one data line, and the each decoding circuit is configured to turn on one switch device of the switch circuits according to the display data stored in the storage units; each of the switch circuits is electrically connected with a plurality of gray-scale output terminals of the gamma voltage circuit through a plurality of switch devices in each of the switch circuits one by one; and the gamma voltage circuit is configured to generate a plurality of gray-scale voltages, and output the gray-scale voltages to a data line electrically connected with a turned-on switch device through the turned-on switch device of each of the switch circuits. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the display panel comprises a plurality of subpixels, and the display units are respectively disposed in the subpixels; and the storage units are respectively in the subpixels, or are each between two adjacent subpixels. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein a material employed by the silicon substrate comprises monocrystalline silicon, polycrystalline silicon, or amorphous silicon. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein the storage units each comprise a static random access memory. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein the display units each comprise a reflective layer covering the silicon substrate and a liquid crystal layer in sequence. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein the display units each comprise an organic light emitting diode or an LED display device, the organic light emitting diode or the LED display device being disposed on the silicon substrate. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein the gamma voltage circuit comprises a gamma voltage regulation sub-circuit, a plurality of digital-to-analog conversion sub-circuits, and a plurality of operational amplification sub-circuits; a plurality of output terminals of the gamma voltage regulation sub-circuit are connected with the plurality of digital-to-analog conversion sub-circuits one to one; each of the digital-to-analog conversion sub-circuits is electrically connected with an input terminal of one of the operational amplification sub-circuits; and output terminals of the operational amplification sub-circuits are the gray-scale output terminals of the gamma voltage circuit. ### Claim 8 (depends on 7) A display device, comprising the display panel according to claim 7 and an image processor connected with the display panel, wherein the image processor is configured to output the display data to the storage units, and the display data are matched with subpixels where the display units corresponding to the storage units are located. ### Claim 9 (depends on 1) A display device, comprising the display panel according to claim 1 and an image processor connected with the display panel, wherein the image processor is configured to output the display data to the storage units, and the display data are matched with subpixels where the display units corresponding to the storage units are located. ### Claim 10 (depends on 9) A driving method of the display device according to claim 9, wherein when the display panel comprises a data driving circuit and subpixels, the driving method comprises: before one frame image is displayed, the image processor determining whether each of the subpixels is a dynamic pixel or a static pixel; the image processor outputting display data matched with the dynamic pixel to a storage unit corresponding to a display unit in the dynamic pixel, the storage unit storing the display data; the data driving circuit loading the display data stored in the storage units into the display units; and turning-on each of the subpixels to display an image. ### Claim 11 (depends on 10) The driving method of the display device according to claim 10, wherein when the data driving circuit comprises a gamma voltage circuit, a plurality of switch circuits and a plurality of decoding circuits, the data driving circuit loading the display data stored in the storage units into the display units comprises: the decoding circuits turning on one switch device of each of the switch circuits according to the display data stored in the storage units; the gamma voltage circuit generating a plurality of gray-scale voltages, and outputting the gray-scale voltages to a data line electrically connected with a turned-on switch device through the turned-on switch device of each of the switch circuits. ### Claim 12 (depends on 11) The driving method of the display device according to claim 11, wherein the image processor determining whether each of the subpixels is a dynamic pixel or a static pixel comprises: the image processor obtaining display data of consecutive frames of images; and the image processor determining that, when a number of repetitions of the consecutive n frames of display data matched with one subpixel is greater than or equal to m, the one subpixel is a static pixel; and the image processor determining that, when the number of repetitions of the consecutive n frames of display data matched with one subpixel is less than m, the one subpixel is a dynamic pixel; 1