Liquid crystal display panel, data drive circuit thereof and liquid crystal display device

Abstract

The invention discloses a liquid crystal display panel, a data drive circuit thereof and a liquid crystal display device. The data drive circuit of the liquid crystal display panel comprises a data drive chip. The data drive chip comprises a plurality of data drive modules for driving data lines of the liquid crystal display panel. The data drive circuit is characterized in that each data drive module comprises ports, a working voltage range of each data drive module is defined by the corresponding ports, the data drive circuit of the liquid crystal display panel further comprises at least two isolation drive modules, and preset reference voltages are outputted to the ports of the data drive modules by the isolation drive modules. The liquid crystal display panel, the data drive circuit and the liquid crystal display device have the advantages that the data drive circuit comprises the isolation drive modules, the power of each single isolation drive module is reduced along with increase of the quantity of the isolation drive modules, a heating value is reduced, accordingly, heat can be uniformly dispersed to the isolation drive modules, the problem of local overheating of an existing data drive chip can be effectively solved, and the service life of a product is prolonged.

Description

technical field [0001] The invention relates to the field of liquid crystal display, and more specifically, relates to a data driving circuit of a liquid crystal panel, a liquid crystal panel and a liquid crystal display device. Background technique [0002] Such as figure 1 As shown, the liquid crystal panel includes a data line and a data driving chip 30 for driving the data line. In the data driving chip 30, a data driving module 21 coupled with the data line is commonly used to amplify the driving capability of the signal. The data driving module 21 is provided with a first port and the second port, the working voltage range of the data driving module 21 depends on the voltages connected to the first port and the second port. Generally speaking, one port of the data driving module 21 is connected to a fixed voltage (set as the first reference voltage), and the voltage of the other port (set as the second reference voltage) is generated by a signal module outside the dat...

AI Technical Summary

Problems solved by technology

Existing technical solutions can lead to the problem of local overheating of the data driver chip 30

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