Method and device for adjusting reference voltage of public electrode
A technology of reference voltage and common electrode, which is applied in the field of adjustment of common electrode reference voltage
Active Publication Date: 2012-06-27
HISENSE VISUAL TECH CO LTD
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Problems solved by technology
However, as shown in Figure 2, due to voltage disturbance or other Influenced by various factors, the common electrode reference voltage Vcom often deviates from the exact position to form an erroneous common electrode reference voltage Vcom′, so that the polarity of the pixel electrode voltage changes The absolute value of the voltage difference between the two ends of the liquid crystal molecules also changes, which will cause the gray scale of the display to change, thus causing the screen to flicker.
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[0031] The present invention aims to provide a method and device for adjusting the common electrode reference voltage, which can better avoid screen flickering.
[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0033] Such as image 3 As shown, a specific embodiment of the common electrode reference voltage adjustment method of the present invention, the adjustment method includes:
[0034] Step 301, displaying the adjustment chart on the liquid crystal display;
[0035] Step 302, observing whether the adjustment chart flashes;
[0036] Step 303, if the adjustment chart is flickering, adjust the magnitude of the reference voltage of the common electrode until the adjustment chart does not flicker.
[0037] The method for adjusting the reference voltage of the common electrode in this embodiment can adjust the size of the reference voltage of the common electrode according to whether the adjustme...
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The invention discloses a method and a device for adjusting the reference voltage of a public electrode, which relates to the technical field of liquid crystal display and aims to better prevent a picture from flickering. The method for adjusting the reference voltage of the public electrode comprises the following steps: displaying an adjusting graphic card on a liquid crystal display; observingwhether the adjusting graphic card flickers or not; and if the adjusting graphic card flickers, adjusting the magnitude of the reference voltage of the public electrode until the adjusting graphic card does not flicker. The device for adjusting the reference voltage of the public electrode comprises a display unit and an adjusting unit, wherein the display unit is used for displaying the adjusting the graphic card on the liquid crystal display, and the adjusting unit is used for adjusting the magnitude of the reference voltage of the public electrode until the adjusting graphic card does not flicker when the adjusting graphic card flickers. The invention can be used for adjusting the reference voltage of the public electrode.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a method and a device for adjusting a reference voltage of a common electrode. Background technique [0002] In the field of liquid crystal display technology, the light transmittance can be controlled through the deflection of liquid crystal molecules, so as to form a certain gray scale to achieve the purpose of display. Wherein, the light transmittance depends on the deflection angle of the liquid crystal molecules, and the deflection angle of the liquid crystal molecules depends on the voltage difference applied across the liquid crystal molecules. [0003] Specifically, the voltage applied to one end of the liquid crystal molecules is the common electrode reference voltage V com , and the voltage loaded on the other end of the liquid crystal molecule is the pixel electrode voltage, which can be divided into V 0 to V 255 There are 256 levels in total. In thi...
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IPC IPC(8): G09G3/36
Inventor 陈雄赵仁智
Owner HISENSE VISUAL TECH CO LTD