Voltage conversion device with non-linear gain

Abstract

The invention relates to a nonlinear gain voltage conversion device for converting analog voltage output from an analog voltage source, comprising a gain determination module, a voltage selection module and a voltage output module; wherein, the gain determination module comprises an analog-digital converter coupled with the analog voltage source and a gain selector coupled with the analog-digital converter; the gain determination module is used to determine the output gain; the voltage selection module is coupled with the analog voltage source and the analog-digital converter to select a DC voltage from a plurality of DC voltages and output the DC voltage. The voltage output module is used to output the amplified results of the DC voltage output by the voltage selection module according to the output gain determined by the gain selector.

Description

technical field [0001] The invention relates to a voltage conversion device, in particular to a voltage conversion device with nonlinear gain. Background technique [0002] Liquid crystal displays have the characteristics of light and thin appearance, low power consumption, and no radiation pollution, and have been widely used in information products such as computer systems, mobile phones, and personal digital assistants (PDAs). The working principle of the liquid crystal display is to use the liquid crystal molecules in different alignment states to have different polarization or refraction effects on light, so the penetration of light can be controlled through liquid crystal molecules in different alignment states, and output light of different intensities can be further generated. And red, green, blue light with different grayscale intensities. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of a known thin film transistor (Thin Film Transistor,...

AI Technical Summary

Problems solved by technology

In this case, through the known voltage conversion circuit 20, the data line signal output by the data line signal output circuit 104 will only be linearly amplified to the working range of the thin film transistor 114, so that the different gray scales presented by the thin film transistor liquid crystal display 10 are consistent with the The relationship between brightness is similar to a straight line, which affects the gradient effect of the picture and makes the image unnatural

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