| 发明名称 | System and methods for extraction of threshold and mobility parameters in AMOLED displays | ||
| 摘要 | A system and method for extracting a parasitic capacitance value from a pixel circuit including a light emitting device, a drive device to provide a programmable drive current to the light emitting device, a programming input, and a storage device to store a programming signal. The system and method determine the biasing voltage of an internal node of the pixel circuit during a driving cycle for a desired measurement level, and modify voltages of the pixel circuit that do not affect said biasing voltage to eliminate unwanted cross talk. In different implementations, the biasing voltage is determined by measuring the voltage at an internal node, or by calculating the voltage at the internal node. | ||
| 申请公布号 | US9275579(B2) | 申请公布日期 | 2016.03.01 |
| 申请号 | US201414253422 | 申请日期 | 2014.04.15 |
| 申请人 | Ignis Innovation Inc. | 发明人 | Chaji Gholamreza;Ngan Ricky Yik Hei;Zahirovic Nino;Azizi Yaser |
| 分类号 | G09G3/32 | 主分类号 | G09G3/32 |
| 代理机构 | Nixon Peabody LLP | 代理人 | Nixon Peabody LLP |
| 主权项 | 1. A method of extracting a parasitic capacitance value from a pixel circuit including a light emitting device, a drive device to provide a programmable drive current to the light emitting device, a programming input, and a storage device to store a programming signal, the method comprising: determining the biasing voltage of an internal node of the pixel circuit during a driving cycle for a desired measurement level, modifying voltages of the pixel circuit that do not affect said biasing voltage to eliminate unwanted cross talk, and extracting a parasitic capacitance from said pixel circuit. | ||
| 地址 | Waterloo CA | ||