Shift register and display apparatus using same

Details Shift register and display apparatus using same Shift register and display apparatus using same

2007-03-13

2007-03-13

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S095000, C345S204000, C345S214000, C377S064000, C377S070000, C377S107000

Reexamination Certificate

active

10376320

ABSTRACT:
In a shift register, which is for use in an image display apparatus of the TFT active matrix type in which a driver circuit is integrally provided on a display panel, and which is so arranged as to boost a start pulse SP to a start pulse SPO by using a level shifter, and to supply the start pulse SPO to a flip-flop F1of a shift register section, the start pulse SP having an amplitude lower than a driving voltage and being supplied thereto, the shift register is provided with an operation control circuit for inactivating the level shifter when the first stage flip-flop F1outputs an output signal S1and activates the level shifter when a last stage flip-flop Fn outputs an output signal Sn. Therefore, it is possible to reduce power consumption of the level shifter during a period in which the start pulse SPO is transmitted from a flip-flop F2to a flip-flop Fn−1.

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U.S. Appl. No. 09/568,889, filed May 11, 2000, entitled “Two-Way Shift Register and Image Display Device Using the Same”.
U.S. Appl. No. 09/578,440, filed May 25, 2000, entitled “Shift Register and Image Display Apparatus Using the Same”.
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Korean Office Action and English translation thereof mailed Mar. 29, 2005 in corresponding Korean application No. 10-2003-18417.
TW Office Action mailed Apr. 21, 2004 in corresponding TW application No. 092105893 and English translation thereof.

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