Driving method and driving deice for display panel

Abstract

The invention discloses a driving method and a driving deice for a display panel. The driving method comprises steps of detecting the working state of the display panel and switching bias current in a data line driving circuit according to the working state of the display panel. By the above mode, the invention solves the problem that grid signals added on a data line are distorted due to electric leakage, enables the display brightness of the display panel to be consistent, and further improves the user experience.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a driving method and a driving device of a display panel. Background technique [0002] With the rapid advancement of technology, people have higher and higher requirements for the performance and appearance of consumer electronics products, especially smart phones and tablet computers. Lightness, thinness, shortness, and smallness have become common interests pursued by major electronic product manufacturers in order to cater to the market. In order to realize thinner and lighter electronic products, most of the screens used in mobile phones and tablet computers are capacitive touch screens that integrate display and touch functions, including three types: On-Cell, Hybrid In-Cell and Full In-Cell , and the latter can make the display screen thinner and lighter than the previous two technologies. [0003] The small and medium-sized LTPS LCDs of the Full In-Cell architectur...

AI Technical Summary

Problems solved by technology

[0004] However, when some display units, such as N rows of pixels, stop to scan some touch units after scanning, the source signal (Source) of the data line driving the display panel will always be kept at the ground (GND) level. flat low state, which will cause leakage

At this time, when part of the touch units are scanned, and then scan the next row of pixels arranged in sequence, such as the N+1 row of pixels, the Source signal of the N+1th row of pixels will be distorted due to electric leakage ( like figure 2 As shown), that is, there is a serious delay (Delay) phenomenon on the rising and falling edges of the Source signal, which eventually leads to the fact that the pixels in the N+1th row cannot be fully filled, and it appears as the N+1th row on the display. The brightness of the pixels in the row is darker, forming a dark line (such as image 3 shown), which greatly reduces the user experience

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