GOA circuit of LTPS semiconductor TFT
US9728147B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Sep 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a GOA circuit of LTPS semiconductor TFT, employed for forward-backward bidirectional scan transmission, comprising a plurality of GOA units which are cascade connected, and N is set to be a positive integer and an Nth GOA unit utilizes a plurality of N-type transistors and a plurality of P-type transistors and comprises a transmission part (100), a transmission control part (200), an information storage part (300), a data erase part (400), an output control part (500) and an output buffer part (600). The transmission gate is employed to perform the former-latter level transferring signal, and the NOR gate logic unit and the NAND gate logic unit are employed to convert the signals, and the sequence inverter and the inverter are employed to save and transmit the signals to solve the issues that the stability of the circuit is poor, and the power consumption is larger as concerning the LTPS with single type TFT elements, and the problem of TFT leakage of the single type GOA circuit to optimize the performance of the circuit. The ultra narrow frame or frameless designs can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.