# US 10,769,984 B2 · Display device and driving method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,769,984 B2 - Document ID: US10769984B2 - Status: Granted - Kind: B2 - Application number: 16/301,292 - Filed: 2018-04-18 - Published: 2019-11-21 - Granted: 2020-09-08 - Earliest claimed: 2017-06-15 - Assignees: Beijing Boe Display Technology Co., Ltd.; Boe Technology Group Co., Ltd. - Applicants: Beijing BOE Display Technology Co., Ltd.; BOE Technology Group Co., Ltd. - Inventors: Yanfeng Wang; Xue Dong; Dan Wang; Yun Qiu; Yuanxin Du; Xiaoling Xu; Zhenhua Lv; Zhidong Wang; Weipin Hu; Congcong Wei - Web page: https://patentgrep.com/patent/US10769984B2 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix} - H10H 20/855: Optical field-shaping means, e.g. lenses - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - H10W 90/00: Package configurations - G09G 2300/0426: Layout of electrodes and connections - G09G 2310/0264: Details of driving circuits - 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) - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract A display device including a display panel that includes a plurality of micro-LED pixel units arranged in an array, and a light-controlling component disposed on a light exiting side of the display panel. The light-controlling component includes a plurality of light-controlling regions each including at least two sub-regions individually controllable to switch between a transmissive state and a non-transmissive state. The light-controlling regions are arranged such that an orthographic projection of each of the light-controlling regions on the display panel covers a respective one of the micro-LED pixel units. ## Claims ### Claim 1 A display device, comprising: a display panel comprising a plurality of micro-LED pixel units arranged in an array; and a light-controlling component on a light exiting side of the plurality of micro-LED pixel units of the display panel, the light-controlling component comprising a plurality of light-controlling regions, ones of the light-controlling regions comprising at least four sub-regions individually controllable to switch between a transmissive state and a non-transmissive state, wherein the light-controlling component comprises: a first substrate; a second substrate opposite to the first substrate; an electrically controllable optical medium layer between the first substrate and the second substrate; a first electrode layer on a side of the first substrate facing the second substrate; and a second electrode layer on a side of the second substrate facing the first substrate, wherein at least one of the first electrode layer or the second electrode layer comprises a plurality of electrodes within each sub-region of the at least four sub-regions, wherein the electrodes within each sub-region are individually controllable, wherein respective orthographic projections of the ones of the light-controlling regions on the display panel cover respective ones of the micro-LED pixel units and surrounding regions of the respective ones of the micro-LED pixel units, and the light-controlling regions do not overlap each other, wherein the electrically controllable optical medium layer comprises ferroelectric liquid crystal material. ### Claim 2 (depends on 1) The display device of claim 1, wherein within the ones of the light-controlling regions the at least four sub-regions are arranged in a lateral direction, a longitudinal direction, or as an array. ### Claim 3 (depends on 2) The display device of claim 2, wherein the at least four sub-regions of the ones of the light-controlling regions have a substantially same size. ### Claim 4 (depends on 1) The display device of claim 1, wherein the first electrode layer and the second electrode layer comprise the plurality of electrodes, and wherein the first electrode layer and the second electrode layer have a same electrode pattern. ### Claim 5 (depends on 1) The display device of claim 1, wherein the first electrode layer comprises the plurality of electrodes, and wherein the second electrode layer comprises at least one block electrode covering at least one of the light-controlling regions. ### Claim 6 (depends on 1) The display device of claim 1, wherein the second electrode layer comprises the plurality of electrodes, and wherein the first electrode layer comprises at least one block electrode covering at least one of the light-controlling regions. ### Claim 7 (depends on 1) The display device of claim 1, wherein ones of the plurality of electrodes comprise a respective plurality of sub-electrodes. ### Claim 8 (depends on 1) The display device of claim 1, wherein the light-controlling component is configured such that the at least four sub-regions of the ones of the light-controlling regions are sequentially switched to the transmissive state within successive time windows to transmit light emitted by the respective ones of the micro-LED pixel units, and wherein within respective ones of the successive time windows only one of the at least four sub-regions of the ones of the light-controlling regions is in the transmissive state. ### Claim 9 (depends on 1) A method for driving the display device according to claim 1, wherein the method comprises sequentially switching within successive time windows ones of the at least four sub-regions of the light-controlling regions to the transmissive state to transmit light emitted by the respective micro-LED pixel unit, wherein within ones of the successive time windows only one of the at least four sub-regions of the light-controlling regions is in the transmissive state. ### Claim 10 (depends on 9) The method of claim 9, wherein the switching comprises: selectively applying, within the ones of the successive time windows, a drive voltage to the electrodes within the ones of the light-controlling regions. ### Claim 11 (depends on 10) The method of claim 10, wherein the selectively applying comprises: applying the drive voltage to respective ones of the electrodes within the ones of the light-controlling regions while not applying the drive voltage to remaining ones of the electrodes, to switch a sub-region of the at least four sub-regions where the electrode applied with the drive voltage is in the transmissive state. ### Claim 12 (depends on 10) The method of claim 10, wherein the applying comprises: not applying the drive voltage to respective ones of the electrodes within the ones of the light-controlling regions while applying the drive voltage to remaining ones of the electrodes, to switch a sub-region of the at least four sub-regions where the electrode not applied with the drive voltage is in the transmissive state. ### Claim 13 (depends on 4) The display device of claim 4, wherein ones of the plurality of electrodes comprise a plurality of sub-electrodes. ### Claim 14 (depends on 5) The display device of claim 5, wherein ones of the plurality of electrodes comprise a plurality of sub-electrodes. ### Claim 15 (depends on 6) The display device of claim 6, wherein ones of the plurality of electrodes comprise a plurality of sub-electrodes.