초록 ▼

There is disclosed an active matrix liquid crystal display that receives input signals having small amplitudes and needs no externally attached level-shifting circuit. The active matrix liquid crystal display has a level-shifting circuit for amplifying various input signals, such as control signals,

There is disclosed an active matrix liquid crystal display that receives input signals having small amplitudes and needs no externally attached level-shifting circuit. The active matrix liquid crystal display has a level-shifting circuit for amplifying various input signals, such as control signals, a clock signal, and a start pulse signal, and supplying the amplified signals to peripheral driver circuits. These peripheral driver circuits drive an active matrix circuit. The level-shifting circuit is made of a differential amplifier consisting of polysilicon TFTs. This amplifier is an analog amplifier. This level-shifting circuit is fabricated on the same substrate as the active matrix circuit and the peripheral driver circuits. If the amplitudes of the input signals are small, level-shifting operations can be performed well. Since any externally attached level-shifting circuit is dispensed with, the cost can be curtailed.

대표청구항 ▼

[ What is claimed is:] [1.]1. A display device comprising:as active matrix circuit comprising thin-film transistors (TFTs) as switching devices and formed over an insulating substrate;a signal line driver circuit and a scanning line driver circuit for driving said active matrix circuit, said signal

[ What is claimed is:] [1.]1. A display device comprising:as active matrix circuit comprising thin-film transistors (TFTs) as switching devices and formed over an insulating substrate;a signal line driver circuit and a scanning line driver circuit for driving said active matrix circuit, said signal line driver circuit and said scanning line driver circuit being formed over said insulating substrate; andat least one differential amplifier formed over said insulating substrate and comprising TFTs, said differential amplifier having a pair of input terminals for a non-inverted input signal an inverted signal of said non-inverted input signal to amplify said non-inverted and inverted input signals, wherein the signal amplified by said differential amplifier is sent to said signal line driver circuit or to said scanning line driver circuit.