| 摘要 |
A liquid crystal display and a driving method thereof are provided. The liquid crystal display includes a liquid crystal display panel, a register for storing pixel information of a problem pattern and polarity pattern information, a block pattern recognition unit for comparing input data with the problem pattern to count the number of problem patterns contained in the input data and comparing the count value with a first threshold value, a line pattern recognition unit for determining the line containing the problem pattern as a problem line, a frame pattern recognition unit for comparing the number of problem lines with a second threshold value, and determining the frame containing the input data as a problem frame, a polarity control signal generating unit for generating vertical and horizontal polarity control signals, and source drive integrated circuits (ICs) for controlling the vertical and horizontal polarities of data voltages supplied to the data lines. |
| 主权项 |
1. A liquid crystal display, comprising:
a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the data lines, and a plurality of liquid crystal cells; a register for storing pixel information of a problem pattern, the problem pattern of input data which degrades a display quality, and polarity pattern information associated with the problem pattern, wherein the problem pattern and the polarity pattern information stored in the register are capable of being modified, added, and deleted by being transmitted from either an EEPROM or a system board connected via a cable and a connector according to a model of the liquid crystal display; a pattern recognition unit for comparing the input data with the problem pattern and counting a number of times whenever the input data is determined to be a problem and comparing an accumulated counted number with a first threshold value; the pattern recognition unit comprising a block pattern recognition unit for comparing the input data with the problem pattern by comparing odd row pixel data and even row pixel data of consecutive input data with a first line and a second line information of the problem pattern from the register, respectively, and counting a number of times whenever the input data is determined to be a problem and comparing an accumulated counted number with a first threshold; a line pattern recognition unit for determining a line as a problem line when the accumulated counted number of problems in the line is greater than the first threshold value; a frame pattern recognition unit for comparing a number of problem lines with a second threshold value, and if the number of the problem lines is greater than the second threshold value, and determining a frame containing the number of problem lines as a problem frame; a polarity control signal generating unit for generating a vertical polarity control signal and a horizontal polarity control signal in the problem frame on the basis of the polarity pattern information; and source drive integrated circuits (ICs) for controlling a vertical polarity and a horizontal polarity of data voltages supplied to the data lines in response to the vertical polarity control signal and the horizontal polarity control signal, wherein the register includes a first register, where bits b7 and b6 define vertical polarity control signal information, bits b5 to b0 define a first line information of the problem pattern, wherein the register includes a second register, where bit b7 defines the problem pattern ON/OFF, bit b6 defines horizontal polarity control signal information, bits b5 to b0 define a second line information of the problem pattern, wherein, when the problem pattern is defined as ON, a problem pattern is detected from a comparison of the problem pattern defined in a corresponding register with the input data, and wherein, when the problem pattern is defined as OFF, no comparison of the problem pattern defined in the corresponding register with the input data is made. |
