Level shift circuit, display apparatus, and portable terminal

Details Level shift circuit, display apparatus, and portable terminal Level shift circuit, display apparatus, and portable terminal

2007-05-29

2007-05-29

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S060000, C326S062000

Reexamination Certificate

active

10484953

ABSTRACT:
In the structure in which an input signal IN and a reverse-phase signal XIN thereof are externally input, an external IC is required for generating the reverse-phase signal XIN, and the number of required input signal terminals is two.A level shift circuit formed on an insulating substrate, such as a glass substrate, using transistors with large characteristic variations, for example, TFTs with high thresholds Vth, includes a complementary generator unit (11) driven by a first power supply (VCC) having an amplitude voltage equal to the amplitude voltage of a signal externally input from the substrate to generate complementary signals from a single-phase input signal IN. The complementary signals generated by the complementary generator unit (11) are level-shifted by a level shift unit (14). Therefore, it is no longer necessary to externally input the reverse-phase signal XIN.

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