Signal line driver circuit and liquid crystal display device

Patent metadata

Field	Value
Publication number	US-9053675-B2
Application number	US-201213667222-A
Country	US
Kind code	B2
Filing date	Nov 2, 2012
Priority date	Nov 11, 2011
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

To prevent malfunctions from occurring. A shift register, a selection circuit having a function of determining which a first pulse signal or a second pulse signal is output at the same potential level as a pulse signal input from the shift register, and a plurality of driving signal output circuits each having functions of generating and outputting a driving signal are provided. Each of the plurality of driving signal output circuits includes a latch unit, a buffer unit, and a switch unit for controlling rewriting of data stored in the latch unit.

First claim

The invention claimed is:

1. A driver circuit comprising:
a shift register;
a selection circuit having a function of determining that a pulse signal input from the shift register is output as a first pulse signal or a second pulse signal, in accordance with a first clock signal and a second clock signal; and
a driving signal output circuit having functions of generating and outputting a driving signal for controlling a potential of a signal line in accordance with the first an…

Assignees

• Semiconductor Energy Lab

Inventors

• Miyake Hiroyuki
• Inoue Seiko

Classifications

• G09G2320/046

  Physics · mapped topic

• G09G2300/0469

  Physics · mapped topic

• G09G3/3685

  Physics · mapped topic

• G09G2330/022

  Physics · mapped topic

• G09G2300/0434

  Physics · mapped topic