Control method for grid electrode scanning signal and liquid crystal displayer

Abstract

The invention discloses a control method for a grid electrode scanning signal and a liquid crystal displayer. Due to the fact that after initial boosting processing is carried out on a received initial positive voltage signal, the generated grid electrode scanning signal is compared with a preset opening threshold voltage signal, boosting processing is carried out on the initial positive voltage signal once again under the situation that the grid electrode scanning signal cannot reach the preset opening threshold voltage signal until the voltage value of the new grid electrode scanning signal generated after the once-more boosting processing is larger than or equal to the voltage value of the preset opening threshold voltage signal, and the new grid electrode scanning signal is sequentially output to grid electrode scanning lines of a display panel of the liquid crystal displayer. Therefore, it is ensured that thin film transistors connected with the grid electrode scanning lines can be normally switched on through the scanning signals input to the grid electrode scanning lines of the display panel, the problem that the liquid crystal displayer is scrapped due to the fact that an RC load of the liquid crystal displayer is large is solved, and unnecessary production waste is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for controlling grid scanning signals and a liquid crystal display. Background technique [0002] Due to the advantages of low power consumption, low driving voltage, easy driving, direct drive by large-scale integrated circuits, simple structure, low cost, and long life, liquid crystal displays have become a new star in the display field and a bright spot in economic development. [0003] With the increasing size and resolution of liquid crystal displays, many liquid crystal display manufacturers cannot guarantee that the resistance and capacitance (RC) load on the same batch or different batches of liquid crystal displays of the same model is At the same level, gate drivers using the same IC Initial Code cannot meet the gate voltage requirements of different LCDs of the same model. [0004] This is because in the existing gate driver, the same Code means that the ini...

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Problems solved by technology

[0003] With the increasing size and resolution of liquid crystal displays, many liquid crystal display manufacturers cannot guarantee that the resistance and capacitance (RC) load on the same batch or different batches of liquid crystal displays of the same model is The same level, resulting in gate drivers using the same driver initialization code (IC Initial Code) cannot meet the gate voltage requirements of different LCDs of the same model

[0004] This is because in the existing gate driver, the same Code means that the initial output ratio of the charge pump (Charge Bump) in the gate driver is fixed. For the same type of LCD, if the RC load of the LCD is small, Using the gate driver of a certain IC Initial Code can turn on all the thin film transistors in the display area of ​​the LCD, so that the gate driver of the IC Initial Code can meet the gate voltage requirements of the LCD; if the RC load of the LCD is relatively large If the gate driver of the same group of IC Initial Code is used, some or all of the thin film transistors in the display area cannot be turned on, resulting in the abnormal display of the liquid crystal display, and eventually the liquid crystal display that cannot display normally needs to be scrapped, resulting in waste of production

[0005] In order to solve the above problems, gate drivers with different IC Initial Code can be used for liquid crystal displays with different RC loads, but this will increase the inspection process before the liquid crystal display leaves the factory, the operation is more complicated, and it will increase manpower and material resources, resulting in production costs Increase

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