[DISPLAY 101] #25 Methods of OLED Emission
To achieve the self-emissive nature of OLED, two methods are used, which are categorized as “Bottom Emission” and “Top Emission” depending on where the light emitted from the OLED goes. Bottom Emission involves positioning the OLEDs behind a thin-film transistor (TFT), letting the OLED light pass through the TFT before being seen.
Top-emitting organic light-emitting diodes - Optica Publishing …
We review top-emitting organic light-emitting diodes (OLEDs), which are beneficial for lighting and display applications, where nontransparent substrates are used. The optical effects of the microcavity structure as well as the loss mechanisms are discussed. Outcoupling techniques and the work on white top-emitting OLEDs are summarized.
Structure of the top-emitting OLED along with the layer thickness …
In this study, we propose a probe method to analyze exciton distribution by inserting an ultrathin (∼0.1 nm) near-infrared (NIR) material at a specific position within the emitting layer (EML)....
Schematic structures (a) Bottom Emission OLED (b) Top Emission OLED …
On the basis of direction of light emission OLEDs can be classified as top and bottom emission OLED. In bottom emission OLED portrayed in Fig. 5 (a) light passes from the bottom transparent...
Technical status of top-emission organic light-emitting diodes
2021年1月28日 · In this research, the technical design of TEOLEDs used in organic light-emitting diode (OLED) displays is reviewed, covering the optical theory with the microcavity effect, optical losses, and the importance of the Purcell effect in the optical calculation.
Performance improvement of blue TADF top-emission OLEDs
2023年3月1日 · Performance of blue top-emission OLED is improved via Ni-doped SiO 2 buffer layer. The buffer layer lowers hole-injection barrier, thereby balancing injection charges. The fabricated OLED exhibits a remarkably high external quantum efficiency (20.2%). Narrow FWHM (29 nm) is achieved simultaneously using 2nd-order microcavity effects.
Bottom and top emission OLED pixel structure - AU Optronics
A bottom and top emission OLED structure includes: first and second anodes; first and second organic light-emitting layers disposed between the first and second anodes.
Bottom and top emission OLED pixel structure - Google Patents
A bottom and top emission OLED structure is disclosed herein. The OLED pixel structure comprises: first and second anodes; first and second organic light-emitting layers disposed between the...
(PDF) Top-emitting organic light-emitting diodes - ResearchGate
2011年11月7日 · We review top-emitting organic light-emitting diodes (OLEDs), which are beneficial for lighting and display applications, where non-transparent substrates are used. The optical effects of the...
Top-Emission and Bottom-Emission - Related Techniques and
With the creation of a 13-in. color active-matrix organic electroluminescent (OEL) display, Sony (Tokyo, Japan) has demonstrated its proprietary top emission adaptive current (TAC) drive technology [2-24], which allows the fabrication of high-quality displays measuring over 10 in.