Liquid crystal display driver and liquid crystal display driving method for improving brightness uniformity

A liquid crystal display driver for improving brightness uniformity, which is a data-electrode driver outputting display data to a liquid crystal display panel, comprising:

• a latch register circuit temporarily storing display data line by line and sending out said display data;
• a switch control circuit receiving said display data from said latch register circuit and processing said display data into switch control signals;
• a detection-count circuit detecting said switch control signals, increasing the count by one when a scanning electrode being at a non-selection potential and said switch control signal does not change during a scanning period and not increasing the count when said switch control signal does change during said scanning period, calculating a number of waiting voltage offsets of each one of data electrodes, converting said number of waiting voltage offsets into an offset time, and shifting said data electrode to an intermediate potential during said offset time;
• a voltage level shifter converting said switch control signals, which have passed through said detection-count circuit, from digital signals into signals able to control switches;
• and
• a driver output circuit receiving said signals able to control switches from said voltage level shifter and outputting data-electrode signals via switch devices.