A signal output circuit and device

Abstract

The embodiment of the invention provides a signal output circuit and device and relates to the field of electronic equipment. The signal output circuit and device are used for outputting data information for lightening different types of liquid crystal display panels and achieving universality. The signal output circuit comprises a master control chip, an external data storage device, a first switch, at least one first resistor and a power supply. Each input end of the first switch is connected with the power supply, and each output end of the first switch is connected with one end of the first resistor and the master control chip respectively. The master control chip is further connected with the external data storage device and is used for obtaining state combination information produced by the first switch, looking up pre-stored liquid crystal display panel specification parameters matched with the state combination information of the first switch in the external data storage device, invoking pre-stored 4K2K picture information in the external data storage device and processing and outputting the 4K2K picture information to a liquid crystal display panel for display according to the liquid crystal display panel specification parameters.

Description

technical field [0001] The invention relates to the field of electronic equipment, in particular to a signal output circuit and device. Background technique [0002] 4K2K is an abbreviation for high-definition display resolution, which reaches a physical resolution of 3840×2160, making the total number of pixels of the display device reach more than 8 million. Therefore, it has become a trend to use 4K2K LCD panels in large LCD modules. In the production of liquid crystal modules, in order to improve the reliability of liquid crystal modules, aging detection is an indispensable link. In order to realize aging detection, it is first necessary to light up the 4K2K LCD panel, and then perform aging detection on the lit 4K2K LCD panel. [0003] In the prior art, the types of 4K2K LCD panels can be classified according to the specification parameters of the 4K2K LCD panels (such as several groups of pixels and several partitions), and the 4K2K LCD panels are usually lit by perf...

AI Technical Summary

Problems solved by technology

[0004] To sum up, in the prior art, for different types of 4K2K LCD panels, different TV chips are required to light up normally due to the different specifications required, so it is very inconvenient to test the LCD panels. To replace a type of LCD panel, it is necessary to equip the LCD panel with a corresponding type of TV chip, that is, the TV chip does not have the versatility to light up various types of 4K2K LCD panels, which affects the test efficiency

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