Double Sided Emission Organic Light Emitting Diode Display雙面發光有機發光二極管顯示器
Organic light-emitting diode (OLED) displays are thinner, lighter, power saving, and are more responsive than liquid crystal displays (LCDs). Present designs of double-sided displays involve physically putting two displays in one back-to-back assembly. This limits OLEDs to very few commercial applications.
The present invention allows such double-sided displays to be made in one single display. The new double-side-emitting OLED can provide independent pictures on both sides at the same time, or it can provide images on either side as needed. It introduces two new technologies for an improved underlying efficient electron injection layer and enhanced hole injection into the top emission OLED with the semitransparent metal cathode. With these two technologies, the electroluminescent performance is optimized for both top and bottom emission OLED. Moreover, the stability is also improved even after long-term operation with the use of a novel driving scheme.
The invention can be widely applied to small size display product such as personal digital assistant (PDA), digital still camera (DSC) and especially folding-type cell phone due to its capable of displaying two independent images one the front and rear side.
1. High brightness, wide viewing angles, lower power consumption, very thin and light weight
2. Independent display images
3. Higher stability
4. Easier to achieve high resolution
5. Low cost of fabrication
- Replacement of current LCD technology
- Small size display products
Patent Number: US8263968B2
Application Number: US2006590531A
Inventor: Kwok, Hoi-Sing | Wong, Man | Sun, Jiaxin | Meng, Zhiguo | Zhu, Xiuling
Priority Date: 31 Oct 2005
Priority Number: US8263968B2
Application Date: 31 Oct 2006
Publication Date: 11 Sep 2012
IPC Current: H01L005152 | H01L002732
US Class: 257040 | 257088 | 257E2712 | 257E27121 | 257E51018 | 313500 | 313506
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Double sided emission organic light emitting diode display
Usefulness: Double sided emission organic light emitting diode display
Summary: For organic light emitting diodes.
Novelty: Display constructed of double-side-emission organic light emitting diodes for organic light-emitting diode comprises substrate, and stack of organic light emitting diodes in tandem
光学
灯光
31 Oct 2006
US 11/590531
US 8263968
TTC.PA.271S
香港
