Organic light emitting display device comprising multi-type thin film transistor
US10672849B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/3026
Abstract
A pixel of an organic light emitting display device includes a driving thin film transistor (TFT) on a substrate, a switching TFT on the substrate, and an organic light emitting diode (OLED) on the substrate. The driving TFT includes a first active layer including poly-Si, a first insulation layer on the first active layer, and a first source electrode and a first drain electrode contacting the first active layer. At least a portion of the first source electrode and at least a portion of the first drain electrode are disposed on different layers. The switching TFT is electrically connected to the driving TFT, and the switching TFT includes a second active layer including oxide semiconductor material. The OLED is electrically connected to the driving TFT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.