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61.
有源矩阵有机发光二极管显示器（AMOLED）在实现大规模生产的过程中仍然需要解决屏幕显示（front-of-screen，FOS）效果、基础设施的成本和良品率控制等问题。本文就上述问题提出了解决方案，包括实现更卓越的显示效果，降低制造成本以及增加良品率。 相似文献
62.
新的显示技术是否会替代AMLCD技术而成为移动可视设备中的霸主呢?来自一线设备制造商的答案最具有权威性和可信度。 相似文献
63.
Yong‐Hae Kim Choong‐Heui Chung Jaehyun Moon Su‐Jae Lee Gi Heon Kim Yoon‐Ho Song 《ETRI Journal》2008,30(2):308-314
In this paper, we describe the fabrication of 3.5‐inch QCIF active matrix organic light emitting display (AMOLED) panels driven by thin film transistors, which are produced by an ultra‐low‐temperature polycrystalline silicon process on plastic substrates. The over all processing scheme and technical details are discussed from the viewpoint of mechanical stability and display performance. New ideas, such as a new triple‐layered metal gate structure to lower leakage current and organic layers for electrical passivation and stress reduction are highlighted. The operation of a 3.5‐inch QCIF AMOLED is also demonstrated. 相似文献
64.
Takenobu Usui Yoshiki Nakajima Tomokazu Shiga 《Journal of the Society for Information Display》2022,30(3):198-208
We propose a new digital driving technique using pulse-density modulation (PDM) with a random dither matrix for evenness of luminance uniformity and higher motion image quality. As a digital driving technique, pulse-width modulation (PWM) is conventionally used for active-matrix organic light-emitting diode (AMOLED) displays in order to improve luminance uniformity. However, in PWM driving, it is difficult to realize high-frame-rate driving for improving motion image quality. On the other hand, it is considered that PDM driving method is effective to obtain high motion image quality because of non-frame-refreshing property. In the present paper, we proposed a PDM driving technique using a random dither matrix and evaluated the relationship between the display image quality and the driving frequency in the proposed method through simulations. As a result, it is confirmed that good image quality can be obtained by using a blue-noise mask as a random dither matrix at a practical driving frequency. Moreover, we demonstrated the proposed technique using an actual AMOLED panel. 相似文献
65.
Qiujun Wang Wenxin Zhang Weiwei Su Zeyu Zhang Jing Cui Weiqi Zhu Mengyue Dong Ya Su Bo Wang Fang Zhang 《Journal of the Society for Information Display》2022,30(3):224-232
Choosing a suitable bending structure is an important way to optimize flexible AMOLED. In this article, we proposed and established a drop-shape model through nonlinear finite element analysis software, comparing it with the “U”-shaped bending model. The mechanical stress conditions under different bending radius are analyzed and compared. Aiming to find a better module folding track, we output the influence of the bending radius on the stress and strain of the device layer, so that these data and research can provide reliable support for future material selection and structural optimization. The super-elastic and viscoelastic behaviors of optically clear adhesive are described by polynomial reduced integral and Prony series model, respectively. Both U-shaped various layers of film and overall flexible screen module strains increase fast with the decreasing of bending radius and smaller radius will increase the fatigue damage risk. The stress and strain of the drop shape did not change significantly with the decrease of the radius. During the bending process, the most stressed part appears in the outermost TP layer. In a small radius, it can be optimized from a curved structure, and water drop and wedge shapes can be prioritized. 相似文献
66.
Si‐Tao Huo Li‐Qin Shao Ting Dong Ji‐Sheng Liang Ze‐Tong Bi Mu He Zhe Li Zhuo Gao Jing‐Yao Song 《Journal of the Society for Information Display》2020,28(1):36-43
A 403‐ppi (pixel per inch) real RGB active‐matrix organic light‐emitting diode (AMOLED) was fabricated without using fine metal mask (FMM). Organic light‐emitting materials were printed on array panel, with a novel process that has the advantages of low cost and high pixel density. The uniformity of the organic light‐emitting diodes (OLEDs) was improved with carefully tuning printing parameters, and good panel performance was achieved. The key to such a process was the design of the hexagonal patterning of the pixels. The image quality of the panel with this hexagonal pixel arrangement was evaluated with a bmp format Pixel Layout Simulation picture. 相似文献
67.
Zhongyuan Wu Liangchen Yan Yongqian Li Xuehuan Feng Huaiting Shih Taejin Kim Yuqing Peng Jianwei Yu Xue Dong 《Journal of the Society for Information Display》2020,28(5):418-427
In this paper, we presented 55‐in. 8K4K AMOLED TV employing coplanar oxide thin‐film transistor (TFT) backplane, top emissive inkjet‐printing organic light‐emitting diode (OLED) device, gate driver on array (GOA), and compensation technologies. It is so far the largest prototype AMOLED TV fabricated by using inkjet printing process with 8K resolution. It shows the stunning display quality, thanks to the high resolution and fast refresh frequency. It proves that the inkjet printing process is not only cost competitive but also can deliver premium display. 相似文献
68.
Paweł E. Malinowski Tung‐Huei Ke Atsushi Nakamura Ya‐Han Liu Dieter Vander Velpen Erwin Vandenplas Nikolas Papadopoulos Auke Jisk Kronemeijer Jan‐Laurens van der Steen Soeren Steudel Che‐Cheng Kuo Yen‐Yu Huang Yu‐Hsien Chen Ming‐Hua Yeh Gerwin Gelinck Paul Heremans 《Journal of the Society for Information Display》2018,26(3):128-136
High‐resolution RGB organic light‐emitting diode frontplane is a key enabler for direct‐view transparent augmented reality displays. In this paper, we demonstrate 1250 ppi passive displays and semi‐transparent active displays. Organic light‐emitting diode photolithography can provide pixel density above 1000 ppi while keeping effective emission area high because of high aperture ratio. Patterns with 2 μm line pitch were successfully transferred to emission layers, indicating possible further pixel density scaling. Lifetime after patterning, key parameter enabling industrialization, is above 150 h (T90 at 1000 nit). 相似文献
69.
Hylke B. Akkerman Raghu K. Pendyala Pradeep Panditha Ahmed Salem Jie Shen Peter van de Weijer Piet C.P. Bouten Suzanne H.P.M. de Winter Karin van Diesen‐Tempelaars Gerard de Haas Soeren Steudel Ching‐Yu Huang Ming‐Hsiang Lai Yen‐Yu Huang Ming‐Hua Yeh Auke Jisk Kronemeijer Paul Poodt Gerwin H. Gelinck 《Journal of the Society for Information Display》2018,26(4):214-222
We present a thin‐film dual‐layer bottom barrier on polyimide that is compatible with 350°C backplane processing for organic light‐emitting diode displays and that can facilitate foldable active‐matrix organic light‐emitting diode devices with a bending radius of <2 mm. We demonstrate organic light‐emitting diodes that survive bending over 0.5 mm radius for 10.000× based on the high‐temperature bottom barrier. Furthermore, we show compatibility of the bottom barrier with the backplane process by fabricating active‐matrix organic light‐emitting diode displays on GEN1‐sized substrates. 相似文献
70.
Meng‐Ting Lee Cheng‐Liang Wang Chi‐Shun Chan Ching‐Chieh Fu Ching‐Yao Shih Chung‐Chia Chen Kuan‐Heng Lin Yi‐Hong Chen Wei‐Jen Su Chia‐Hsing Liu Chien‐Ming Ko Zai‐Xien Weng Jia‐Hua Lin Yuan‐Chen Chin Chien‐Ying Chen Yu‐Chen Chang Annie Tzu‐Yu Huang Hsueh‐Hsing Lu Yu‐Hsin Lin 《Journal of the Society for Information Display》2017,25(4):229-239
A foldable active‐matrix organic light‐emitting diode display capable of enduring very severe folding and environmental impact was obtained using symmetric panel stacking with an innovative design of color filter structure. The display was subjected to in situ folding cycle under an ambient test condition of 60°C/90% relative humidity, and no performance degradation was found for the display and the touch function during and after the test. In addition, 95% coverage of BT.2020 color space was obtained without additional power consumption compared with that of the panel with National Television System Committee (NTSC) color space. 相似文献