Hybrid display using inorganic micro light emitting diodes (uLEDs) and organic LEDs (OLEDs)
US10381335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2017 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Sep 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/123
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A hybrid light emitting diode (LED) display and fabrication method are provided. The method forms a stack of thin-film layers overlying a top surface of a substrate. The stack includes an LED control matrix and a plurality of pixels. Each pixel is made up of a first subpixel enabled using an inorganic micro LED (uLED), a second subpixel enabled using an organic LED (OLED), and a third subpixel enabled using an OLED. The first subpixel emits a blue color light, the second subpixel emits a red color light, and the third subpixel emits a green color light. In one aspect, the stack includes a plurality of wells in a top surface of the stack, populated by the LEDs. The uLEDs may be configured vertical structures with top and bottom electrical contacts, or surface mount top surface contacts. The uLEDs may also include posts for fluidic assembly orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.