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Backlight module group, display apparatus and sneak shot prevention system

A backlight module, anti-sneak photography technology, applied in the parts of the TV system, static indicators, TVs and other directions, can solve the problem of not effectively preventing candid photography.

Active Publication Date: 2018-01-30
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a backlight module, a display device, and an anti-sneak shooting system to solve the problem in the prior art that can not effectively prevent sneak shooting behaviors

Method used

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  • Backlight module group, display apparatus and sneak shot prevention system
  • Backlight module group, display apparatus and sneak shot prevention system
  • Backlight module group, display apparatus and sneak shot prevention system

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Embodiment Construction

[0033] Aiming at the problem in the prior art that can't effectively prevent the sneak-shooting behavior, the embodiment of the present invention provides a backlight module, a display device and an anti-sneak-shooting system.

[0034] An embodiment of the present invention provides a backlight module, such as figure 1 As shown, it includes: a backlight source 11, and a control module 12 connected to the backlight source 11;

[0035] The control module 12 is used to control the backlight source 11 to emit modulated light that flickers at a preset frequency, and the preset frequency is greater than or equal to the scanning frequency of the shutter and greater than the flickering frequency of the display screen.

[0036] The backlight module provided by the embodiment of the present invention controls the backlight source to emit modulated light that flickers at a preset frequency, and the preset frequency is greater than or equal to the scanning frequency of the shutter. When ...

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PUM

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Abstract

The invention discloses a backlight module group, a display apparatus and a sneak shot prevention system. The backlight module group comprises backlight and a control module connected to the backlight. The control module is used for making the backlight emit modulation light flickering according to a preset frequency. The preset frequency is greater than or equal to a scanning frequency of a shutter and is greater than a flicker frequency of a display screen. Through making the backlight emit the modulation light flickering according to the preset frequency, the preset frequency is greater than or equal to a scanning frequency of a rolling shutter. When the display screen located at a light emission side of the backlight module group is shot by a camera having the rolling shutter, images shot by the camera are a frame displayed by the display screen and a superposed image of light and dark stripes. The stripes shield the frame displayed by the display screen so that a sneak shot behavior is effectively prevented. The preset frequency is greater than the flicker frequency of the display screen so that eyes can not identify flicker of the backlight and normal display of the display screen is not influenced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a display device and an anti-sneak shooting system. Background technique [0002] With the rapid development of light emitting diode (Light Emitting Diode, LED) lighting technology and flat panel display technology, various flat panel display devices are widely used. [0003] At the same time, the ubiquitous application of displays has brought about information security issues. Many places, including museums, confidential research laboratories, and exhibition halls, have adopted signs such as "No Shooting", "Do Not Shoot" or manual Supervisory approach to prevent or restrict filming and photo-taking. But this can only serve as a reminder, and cannot effectively prevent and limit the attempt to take pictures secretly. Contents of the invention [0004] Embodiments of the present invention provide a backlight module, a display device, and an anti-sneak shoo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/34G09G3/3406G09G2320/064G09G2358/00H04N23/63H04N23/73
Inventor 高剑李新国李颖祎刘恺然
Owner BOE TECH GRP CO LTD
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