Liquid crystal display (LCD) device suitable for night vision system and backlight module thereof

Abstract

An LCD device suitable for a night vision system comprises an LCD panel, a backlight module and a backlight drive control unit, wherein the backlight module comprises a light source array composed of a plurality of red LEDs, green LEDs and blue LEDs and used for generating the backlight including read, green and blue lights and projecting the backlight to the LCD panel; and the backlight drive control unit is electrically connected with the light source array and used for driving the red LEDs, the green LEDs and the blue LEDs. When the backlight drive control unit is under a night vision mode, driving power transmitted to the red LEDs is down-regulated or switched off under the trigger of a trigger signal to achieve effects needed by night vision.

Description

【Technical field】 [0001] The invention relates to the design of a liquid crystal display device, in particular to a liquid crystal display device suitable for a night vision system and a backlight source module thereof. 【Background technique】 [0002] The night vision system has a wide range of applications, such as security monitoring, night operations, and ecological observation, and is mainly used for military purposes. The principle of the night vision system is to use optical components to observe the scene at night. The current night vision system optical components (Night Vision Imaging System) are mainly divided into image intensifier tubes (Image Intensifier Tubes) or infrared night vision system (IR Night Vision system). Among them, the principle of the image intensifier tube is to enhance the weak light at night, especially for the red light penetrating through the spectral region, there will be a large light intensity gain, and then displayed by the liquid cryst...

AI Technical Summary

Problems solved by technology

[0004] However, the optical filter is expensive, and the application in the night vision system will cause a huge burden on the user's cost

Furthermore, for a liquid crystal display device with a touch function, adding an optical filter will affect the touch function of the liquid crystal display device, making it difficult for users to perform touch operations on the liquid crystal display device.

Moreover, if the light is sufficient, the addition of an optical filter to the liquid crystal display device is inconvenient for the user, and the normal display image cannot be viewed.

If you want to use it in both night vision mode and normal mode, not only the structural design is more difficult, but also it becomes necessary to keep the optical filter properly, which will increase the unnecessary trouble for the user

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