Liquid crystal screen

Abstract

The invention relates to a multi-function liquid crystal screen with the functions of reflection type passive display and image collection. The liquid crystal screen comprises an MOSFET (Metal Oxide Semiconductor Field Effect Transistor) array, a liquid crystal device, a photoelectric array and a CPU (Central Processing Unit); the source-level voltage of the MOSFET array is controlled by the CPU; the difference of the source-level voltage is controlled so as to control the light transmission capacity of the liquid crystal device; the photoelectric array is excited through the light of the liquid crystal device to convert optical signals into backlight signals to excite the liquid crystal screen; the CPU is connected with the MOSFET array which is connected with the liquid crystal device. According to the liquid crystal screen, the backlight liquid crystal screen can be excited through the environment light due to the passive reflection type scheme and accordingly the purpose of the reduction of the power consumption is implemented to an utmost extent; meanwhile the liquid crystal screen serves as an interface of image collection to enable the liquid crystal screen to be a multi-function device for implementing the image coaction and accordingly the definition and the depth of field of image collection images are improved; meanwhile the calculation on the target movement speed is implemented.

Description

technical field [0001] The invention relates to a liquid crystal screen, in particular to a multifunctional liquid crystal screen with reflective passive display and image collection functions. Background technique [0002] Current reflective LCD screens are divided into the following two types: passive display screens and active-passive display screens. The passive reflective display is installed with reflective material under the liquid crystal panel to replace the luminescent material of the transmissive display. When the ambient light is sufficient, it uses the light reflected by the mirror to illuminate the screen. But it doesn't work in low-light areas, because the little ambient light isn't reflected enough to illuminate the screen. This kind of display screen that can only passively accept and reflect ambient light is a passive reflective LCD screen. The "active" reflective LCD screen corresponding to the "passive anti" reflective LCD screen is equivalent to adding...

AI Technical Summary

Problems solved by technology

However, based on this reflective LCD screen, it is relatively dependent on ambient light.

When the backlight is turned off, the display is clear and bright in the case of sufficient ambient light, but in the case of insufficient ambient light, the display effect will deteriorate a lot. At the same time, the lighting source of the active reflective display screen is a linear light source, so it cannot be evenly distributed. Light up the entire screen, there will be a phenomenon that the middle is bright and the surrounding is dark

And this kind of screen is only used as a display device

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