# US 10,504,437 B2 · Display panel, control method thereof, display device and display system for anti-peeping display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,437 B2 - Document ID: US10504437B2 - Status: Granted - Kind: B2 - Application number: 15/512,603 - Filed: 2016-05-26 - Published: 2018-04-05 - Granted: 2019-12-10 - Earliest claimed: 2016-03-25 - Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Beijing Boe Display Technology Co., Ltd. - Inventors: Chunbing Zhang; Xianjuan Zhan; Yichiang Lai - Web page: https://patentgrep.com/patent/US10504437B2 ## 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 3/3258: with pixel circuitry controlling the voltage across the light-emitting element - H10K 59/351: {comprising more than three subpixels, e.g. red-green-blue-white [RGBW]} - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2320/028: by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction - G09G 2320/068: for control of viewing angle adjustment - G09G 2340/10: Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels - G09G 2358/00: Arrangements for display data security - H10K 59/179: Interconnections, e.g. wiring lines or terminals - 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) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract This disclosure relates to a display panel, a control method thereof, a display device and a display system comprising such a display panel. The display panel includes a plurality of pixel units. Each pixel unit has a plurality of subpixels Each subpixel has a display subpixel and an interference subpixel. Additionally, the interference subpixel and the display subpixel are different in at least one of color and gray scale. The display panel also includes a first control unit configured to control the display subpixel to be switched on during a first period of time in each display period, and to control the interference subpixel to be switched off during the first period of time in each display period and switched on during a second period of time in each display period. ## Claims ### Claim 1 A display panel, comprising: a plurality of pixel units, wherein each pixel unit comprises a plurality of subpixels, and each subpixel comprises a display subpixel and an interference subpixel; and a first control circuit configured to control the display subpixel to be switched on during a first period of time in each display period, and to control the interference subpixel to be switched off during the first period of time in each display period and switched on during a second period of time in each display period, wherein the colors of the interference subpixel and the display subpixel are the same, and a difference between the gray scales of the interference subpixel and the display subpixel is greater than or equal to 50. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein a duration of the first period of time is greater than or equal to that of the second period of time. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein a ratio of the duration of the first period of time to the duration of the second period of time is greater than or equal to 1 and smaller than or equal to 5. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein the display subpixel and the interference subpixel respectively comprise: a first electrode layer made of a reflective metal; a light emitting layer arranged on a side of the first electrode layer; and a second electrode layer arranged on a side of the light emitting layer away from the first electrode layer. ### Claim 5 (depends on 4) The display panel according to claim 4, wherein the light emitting layers of the display subpixel and the interference subpixel are configured to emit red light, green light, blue light, cyan light, magenta light or yellow light. ### Claim 6 (depends on 4) The display panel according to claim 4, wherein the light emitting layers of the display subpixel and the interference subpixel are configured to emit white light, and the display subpixel and the interference subpixel further comprise a color resist layer. ### Claim 7 (depends on 1) A display device comprising the display panel according to claim 1. ### Claim 8 (depends on 7) A display system, comprising: a wearable device, and the display device according to claim 7, wherein the wearable device comprises lenses and a second control circuit, the second control circuit being configured to control the lenses to be transmissive during the first period of time and non-transmissive during the second period of time. ### Claim 9 (depends on 8) The display system according to claim 8, wherein a duration of the first period of time is greater than or equal to that of the second period of time. ### Claim 10 (depends on 8) The display system according to claim 8, wherein the display subpixel and the interference subpixel respectively comprise: a first electrode layer made of a reflective metal; a light emitting layer arranged on a side of the first electrode layer; and a second electrode layer arranged on a side of the light emitting layer away from the first electrode layer. ### Claim 11 (depends on 7) The display device according to claim 7, wherein a duration of the first period of time is greater than or equal to that of the second period of time. ### Claim 12 (depends on 7) The display device according to claim 7, wherein the display subpixel and the interference subpixel respectively comprise: a first electrode layer made of a reflective metal; a light emitting layer arranged on a side of the first electrode layer; and a second electrode layer arranged on a side of the light emitting layer away from the first electrode layer. ### Claim 13 A method for controlling a display panel, wherein the display panel comprises a plurality of pixel units, each pixel unit comprising a plurality of subpixels, and each subpixel comprising a display subpixel and an interference subpixel, the method comprising: controlling the display subpixel to be switched on during a first period of time in each display period, and controlling the interference subpixel to be switched off during the first period of time in each display period and switched on during a second period of time in each display period, wherein the colors of the interference subpixel and the display subpixel are the same, and a difference between the gray scales of the interference subpixel and the display subpixel is greater than or equal to 50.