Liquid crystal display device

Abstract

Disclosed is a liquid crystal display apparatus. In the liquid crystal display apparatus, by means of configuring a common electrode to be multiple parallel common electrode bars (14) arranged at intervals and arranging a metal connecting line (12), for connecting each common electrode bar (14) and a signal access panel (2), below the common electrode bar (14), and by means of connecting an alternating-current common voltage (Vcom) generated by the signal access panel (2) to the common electrode bar (14) via the metal connecting line (12), when the liquid crystal display apparatus is subjected to column inversion, the common voltage (Vcom) can also continuously change, the column inversion and the alternating-current driving of the common voltage (Vcom) of the liquid crystal display apparatus can be simultaneously realized, and the power consumption of the liquid crystal display apparatus is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display device. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or Laptop screens, etc., dominate the field of flat panel displays. [0003] Most of the liquid crystal displays 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 pour liquid crystal molecules between the thin film transistor substrate (Thin FilmTransistor Array Substrate, TFT Array Substrate) and the color filter substrate (Color Filter, CF), and apply pixel voltage to the two substrates respectively. and the common voltage, through the electric field ...

AI Technical Summary

Problems solved by technology

[0005] In the existing liquid crystal display panel, in order to suppress the flicker, it is usually driven by column inversion, and since the common electrode in the prior art is usually a continuous planar structure covering the entire display area, when the common voltage (Vcom) When an AC voltage is used, the column inversion driving cannot be realized, so the common voltage (Vcom) of the liquid crystal display panel driven by the existing column inversion mode can only use a DC voltage with a fixed voltage value, and by changing the size of the pixel voltage, To achieve AC drive, but in this way, it is assumed that the positive polarity pixel voltage of a certain gray scale is V 正 , the negative polarity pixel voltage is V 负 , the voltage difference △V between the positive polarity pixel voltage and the common voltage Vcom is V 正 -Vcom, the voltage difference between the negative polarity pixel voltage and the common voltage Vcom △V is Vcom-V 负 , when the column is reversed, the difference between the positive polarity pixel voltage and the negative polarity pixel voltage is 2△V, which leads to a large difference between the positive polarity pixel voltage and the negative polarity pixel voltage when the column is reversed, and the liquid crystal The power consumption of the display panel is high

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