Source driver IC, display device and drive method thereof

Abstract

The embodiment of the invention provides a source driver IC, a display device and a drive method thereof, and relates to the technical field of display, and the source driver IC can improve the display effect of a pure-color grey-scale frame. The source driver IC comprises a control selecting module, a pure-color grey-scale control module and a non-pure-color grey-scale control module; the control selecting module is used for receiving a time sequence control signal input by a time sequence controller, judging whether a current drive frame is a pure-color grey-scale frame or not according to the time sequence control signal, sending the time sequence control signal to the pure-color grey-scale control module if the current drive frame is the pure-color grey-scale frame, and sending the time sequence control signal to the non-pure-color grey-scale control module if the current drive frame is not the pure-color grey-scale frame; the non-pure-color grey-scale control module is used for obtaining a plurality of group of data voltages according to the received time sequence control signal and outputting the data voltages through a data line connecting end; and the pure-color grey-scale control module is used for obtaining a group of three original color data voltages according to the received time sequence control signal, and outputting the three original color data voltages through a data test line connecting end.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a source driver IC, a display device and a driving method thereof. Background technique [0002] At present, whether it is a Liquid Crystal Display (LCD for short) or an Organic Light-Emitting Diode (OLED for short) display, both include a display panel, and the display panel includes a display area, and the display area is provided with a grid line. , a data line and a pixel structure forming a pixel point. In addition, the display further includes a gate driver sequentially supplying scan signals to the gate lines, a source driver supplying data voltages to the data lines, and a timing controller for controlling the gate driver and the source driver. [0003] With the improvement of display resolution and the widespread use of large-size displays, the source driver generally consists of several source drive integrated circuits (Integrated Circuit, IC for short). A so...

AI Technical Summary

Problems solved by technology

[0005] However, due to the internal resistance of source driver ICs, during the transmission of timing control signals between source driver ICs, there will be distortion of timing control signals due to the internal impedance of source driver ICs. IC, the unevenness of the wiring between the connection end of the data line and the data line, and the distortion caused by attenuation during the transmission of synchronous timing signals or asynchronous timing signals will also aggravate the distortion of timing control signals

This kind of timing control signal distortion is not easy to be found visually when the size of the source driver IC is small or the driving capability of the source driver IC is strong, but it will appear when the size is large or the matching between the source driver IC and the display panel is insufficient. Split-screen phenomenon visible to the human eye between display panel areas controlled by source driver ICs

Slight split-screen phenomenon is not easy to be perceived by human eyes in non-pure grayscale images, but it is particularly obvious in pure grayscale images, especially low grayscale (L15-L127) pure color images, which greatly reduces the Display Quality

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