Output driver and display device
US12254237B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2024 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Jan 16, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An output driver according to the disclosure includes a differential signaling circuit that includes a first transistor that generates a bias current, first and second nodes, and a resistor circuit connected between the first and second nodes, and outputs voltages respectively at the first and second nodes as a pair of differential signals by supplying the bias current to one of the first and second nodes based on a level of the input signals, a differential voltage circuit that supplies a differential voltage representing a difference between a center voltage of voltages between the first node and the second node and a predetermined reference voltage to a gate of the first transistor; and a pre-emphasis circuit that executes a pre-emphasis processing in response to changes in the level of the input signal, generating a current based on the differential voltage and adding it to the bias current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.