Voltage adjustment circuit and voltage adjustment method
A voltage adjustment circuit and voltage adjustment technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problem that the modulation performance is difficult to meet the actual needs and so on
Active Publication Date: 2020-10-30
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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Problems solved by technology
Common voltage stabilizing circuits are generally manufactured as integrated chips. Although this type of voltage stabilizing circuit has the advantage of being simple to use in practical applications, it is generally only able to convert the input voltage into a stable output voltage with a specific voltage value, and the modulation performance is difficult to meet. Actual demand
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[0036] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0037] see figure 1 , the present invention provides a voltage regulation circuit, including a drive current generation module 10 and a voltage regulation module 20 .
[0038] The input end of the driving current generating module 10 is connected to the adjustment signal Vstring, and the output end is electrically connected to the control end of the voltage adjustment module 20 to output the driving current I thereto. The input terminal of the voltage adjustment module 20 is connected to the input voltage VIN, and the output terminal outputs the output voltage VOUT.
[0039] The signal value of the adjustment signal Vstring is adjustable. The driving current generation module 10 is used to adjust the current value of the output driving curre...
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A voltage adjustment circuit and a voltage adjustment method. The voltage adjustment circuit comprises a drive current generation module (10) and a voltage adjustment module (20); an input end of the drive current generation module (10) is connected to an adjustment signal (Vstring), and an output end thereof is electrically connected to a control end of the voltage adjustment module (20) and outputs a drive current (I) to same; an input end of the voltage adjustment module (20) is connected to an input voltage (VIN), and an output end thereof outputs an output voltage (VOUT); the signal value of the adjustment signal is adjustable; when the signal value of the adjustment signal (Vstring) is a given signal value corresponding to a target voltage value, the drive current generation module (10) adjusts the current value of the drive current (I) it outputs to an adjustment value corresponding to the target voltage value to control the voltage adjustment module (20) to adjust the voltage value of the output voltage (VOUT) to the target voltage value. Thus, a stable output voltage (VOUT) can be obtained, and the voltage value of the output voltage (VOUT) can be adjusted.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a voltage adjustment circuit and a voltage adjustment method. Background technique [0002] With the development of display technology, liquid crystal display (Liquid Crystal Display, LCD) and other flat display devices have gradually replaced cathode ray tubes (CathodeRay Tube, CRT) display screens are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal smal...
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IPC IPC(8): G05F1/56
CPCG05F1/561
Inventor 杨勇王拂依
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD