Thin film encapsulation for flexible AM-OLED
نویسندگان
چکیده
Flexible organic light emitting diode (OLED) will be the ultimate display technology to customers and industries in the near future but the challenges are still being unveiled one by one. Thin-film encapsulation (TFE) technology is the most demanding requirement to prevent water and oxygen permeation into flexible OLED devices. As a polymer substrate does not offer the same barrier performance as glass, the TFE should be developed on both the bottom and top side of the device layers for sufficient lifetimes. This work provides a review of promising thin-film barrier technologies as well as the basic gas diffusion background. Topics include the significance of the device structure, permeation rate measurement, proposed permeation mechanism, and thin-film deposition technologies (Vitex system and atomic layer deposition (ALD)/molecular layer deposition (MLD)) for effective barrier films. (Some figures in this article are in colour only in the electronic version)
منابع مشابه
Active Matrix OLED Using 150C a-Si TFT Backplane Built on Flexible Plastic Substrate
Flexible displays fabricated using plastic substrates have a potential for being very thin, light weight, highly rugged with greatly minimized propensity for breakage, roll-to-roll manufacturing and lower cost. The emerging OLED display media offers the advantage of being a solid state and rugged structure for flexible displays in addition to the many potential advantages of an AM OLED over the...
متن کاملP-14: AM-OLED Pixel Circuits Based on a-InGaZnO Thin Film Transistors
In this paper, we investigated the application of amorphous InGa-Zn-O (a-InGaZnO) thin film transistors (TFTs) to activematrix organic light emitting display (AM-OLED) pixel circuits. SPICE model of a-InGaZnO TFTs was developed based on experimental data. Several pixel circuits were explored, and the potential advantages of using a-InGaZnO TFTs were discussed.
متن کاملP-102: Amorphous Silicon Thin-Film Transistors-based Active-Matrix Organic Light-Emitting Displays
In this paper, we describe hydrogenated amorphous silicon (a-Si:H) thin-film transistor (TFT)-based active-matrix arrays for active-matrix organic light-emitting displays (AM-OLEDs). The proposed pixel electrode circuits based on three a-Si:H TFTs can supply a continuous output current for AM-OLEDs. Each pixel circuit has compensation circuits that can adjust for the OLED and a-Si:H TFTs electr...
متن کاملPolymorphous Silicon: A Promising Material for Thin-Film Transistors for Low-Cost and High-Performance Active-Matrix OLED Displays
Hydrogenated polymorphous Silicon allows to fabricate TFTs with very interesting characteristics including better threshold voltage stability than a-Si TFTs, lower leakage current than μc-Si:H TFTs and excellent uniformity. Investigation of threshold voltage shift mechanisms of pm-Si:H TFTs has shown a specific semiconductor material degradation with different activation energies compared to a-...
متن کاملCurrent-Scaling a-Si:H TFT Pixel Electrode Circuit for AM-OLEDs
We fabricated and characterized the amorphous silicon thin-film transistor (a-Si:H TFT) pixel electrode circuit with currentscaling function that can be used for active-matrix organic lightemitting displays (AM-OLEDs). As expected from previously reported simulation results, fabricated circuit showed an acceptable current-scaling performance for a high-resolution AM-OLED based on a-Si:H TFTs.
متن کامل