Voltage regulation circuit of common electrode and display device

Abstract

A voltage regulation circuit of a common electrode and a display device can improve sensitivity and adjustment precision of voltage regulation of the common electrode. The voltage regulation circuit of the common electrode comprises a first fixed-value resistor (R1), a second fixed-value resistor (R2), and a first adjustable resistor (VR1), a first end of the first fixed-value resistor (R1) being connected to a first input end (Vin1) of the voltage regulation circuit of the common electrode, a first end of the second fixed-value resistor (R2) being connected to a second input end (Vin2) of the voltage regulation circuit of the common electrode, a first end of the first adjustable resistor (VR1) being connected to a second end of the first fixed-value resistor (R1), and a second end of the first adjustable resistor (VR1) being connected to a second end of the second fixed-value resistor (R2). The voltage regulation circuit of the common electrode further comprises an adjusting module, connected to an output end (Vout) of the voltage regulation circuit of the common electrode and an adjustable end of the first adjustable resistor (VR1), the adjusting module cooperating with the first adjustable resistor (VR1) to adjust a resistance value of the voltage regulation circuit of the common electrode.

Description

technical field [0001] The invention relates to the display field, in particular to a common electrode voltage regulation circuit and a display device. Background technique [0002] Because of the advantages of small thickness, high brightness, and low radiation, liquid crystal panels have been widely used in display products such as mobile phones, smart monitors, LCD TVs, and personal computers. [0003] Usually, due to the large difference in the equivalent capacitance of the liquid crystal panels, the optimal voltage of the common electrode of each liquid crystal panel is not necessarily the same. Therefore, when designing the driving circuit of the liquid crystal panel, the researchers will design the driving circuit with adjustable resistance. By adjusting the adjustable resistance in the driving circuit, the voltage of the common electrode can be adjusted, so that each liquid crystal panel can The optimum common electrode voltage can be achieved. At the same time, in...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that the adjustment sensitivity and adjustable accuracy of the existing common electrode voltage adjustment circuit are poor, and sometimes the voltage of the common electrode cannot be adjusted to the most suitable voltage value, which affects the display device. The display effect of

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