Signal-driving system and shift register unit thereof

Details Signal-driving system and shift register unit thereof Signal-driving system and shift register unit thereof

2011-04-19

2011-04-19

Nguyen, Kimnhung (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S098000, C345S100000, C377S064000

Reexamination Certificate

active

07928942

ABSTRACT:
A signal-driving system for constructing gate signals of liquid crystal display (LCD), includes a plural stage of cascaded shift register units. Each stage of shift register unit includes a first pull-up switch unit, which is turned on for outputting a gate pulse on an output of this stage, based on either the first clock signal or the second clock signal; a pull-up driving unit, which is used for providing a driving pulse via a node for driving the first pull-up switch unit; a first pull-down switch unit, which is turned on to connect the output to a low-level voltage source; a second pull-down switch unit, which is turned on to connect said node to the low-level voltage source; a carry buffer unit, which is used for providing a control pulse on the second pull-down switch unit of previous stage, based on either the first clock signal or the second clock signal, and thereby ensuring operation of each stage independent of gate pulse signals outputted from the other stages.

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