基于4-TFT的OLED像素驱动电路研究

为了延长有机发光显示器件(OLED)的使用寿命,从提高开口率的角度进行探索,针对4-TFT像素驱动电路进行了改进设计,实现了开口率的提高和使用寿命的延长。为基于4-TFT的OLED单元像素驱动电路的设计和分析提供了一种改进思路。     

新型有机光电功能薄膜的电致发光研究

给出了一种新型的有机发光二极管(OLED),发光层选用新型的具有光电效应、热稳定性好、有良好电子传输能力的小分子材料:艹北酸四甲酯TMEP。比较了双层器件ITO/NPB/TMEP/Al和单层器件ITO/TMEP/Al的性能。双层器件的最低阈值电压为5V,器件发射红光,峰值为600nm。     

新一代显示技术OLED

发光二极管 (LED)是近几年来迅速崛起的半导体光电元器件 ,它具有体积小、重量轻、电压低、电流小、亮度高和发光响应速度快等优点 ,容易与晶体管和集成电器配套使用 ,并可用在许多领域 ,因而在全球市场十分走俏。LED技术在近年来不断获得新的突破 ,应用范围不断拓宽 ,已成为极具发展潜力的电子产品之一。有机发光OLED是新一代显示技术。目前 ,国际上有 80多家大公司正在从事OLED材料与器件的研发工作 ,已有多种OLED产品推向市场 ,成为OLED中一颗新星。由于它具有超薄、视角宽、生产工艺简单、能耗低、成本低等特点 ,已引起业内人…     

OLED显示器件的原理及应用

介绍有机发光二极管(OLED)的特点、结构、发光原理以及微处理器AT89L51与VGG12864G-S002 OLED显示模块的接口应用.     

一种使用聚酰亚胺的新型有机发光二极管的研究

报道一种新型的有机发光二极管(OLED),这种OLED是用热稳定性好的聚合物;芴基咔唑FDA2聚酰亚胺(PFF5)(玻璃化温度 Tg=374℃)做发光层.其电致发光光谱有两上发射峰,分别位于450纳米和545纳米处.545纳米的发射峰源自FDA2基团的发光,而450纳米处的发射峰有来自芴基团的发射.由于发射过程中有从芴基团到FDA2基团的能量转移,器件有较高的内量子效率.     

砷化镓红外发光二极管

一、引言砷化镓(GaAs)在室温时的禁带宽度是1.43电子伏,由于具备直接跃迁型电子能带结构的组合,因此是一种高效率的发光材料。GaAs红外发光二极管,具有速度高、寿命长、发光效率高等优点,可广泛地应用于各种光电转换电路的发光器件、光耦合器的光源和显示。一般GaAs发光管可发射出波长大于6750(?)的红外光。GaAs发光二极管的制法有二种:一种是在掺Te或渗Si等的n型GaAs中扩散几个微米的Zn而作成,由于发光机制是在导带和价带之间以及导带与Zn受主能级之     

有机电致发光薄膜器件的研究

有机电致发光薄膜具有制备方便,驱动电压低,发光亮度高,可以与聚合物基底匹配等优点,成为目前世界显示技术的一大研究热点。论述了有机发光薄膜器件的结构、工作机理及其薄膜电致,光致发光的特性,论述了薄膜发光器件的电学特性与光学特性及其器件在脉冲电压波形驱动下的电光特性,提出了应用于显示技术的有机电致发光薄膜器件的电学于光学特性的优化方法。     

有机电致发光器件的回顾和发展

综述了有机电致发光薄膜器件 ( OTFEL )的发展过程和 OTFEL的器件制备和结构 ,总结了有机小分子 (包括金属螯合物 ,稀土有机物 ,有机染料 ) ,聚合物 (主要是共轭高聚物 )制成的器件结构 ,发光光谱和亮度。文末展望了OTFEL 的发展前景。     

有机电致发光薄膜器件的研究

有机电致发光薄膜具有制备方便,驱动电压低,发光亮度高,可以和合物基底匹配等优点,成为目前世界显示技术的一大研究热点。论述了有机发光薄膜器件的结构、工作机理及其膜电致发光薄膜电致,光致发光的特性,论述了薄膜发光器件的电学科技司与光学特性及其器件在脉冲电压波形驱动下的电光特性,提出了应用于显示技术的有机电致光薄膜器件的电不于光学特性的优化方法。     

利用磷光材料提高有机薄膜电致发光效率的研究进展

激活有机分子三重态可提高有机电致发光薄膜器件的发光效率。概述了有机电致磷光薄膜器件的结构、材料、提高器件电致发光效率的原理,目前的研究状况、存在的问题和研究的发展趋势。     

Temperature analysis for optimizing the configuration of the linear cell

The market demand of display devices is drastically increasing in the information technology age. The research on OLED (Organic Light Emitting Diodes) display with the luminescence in itself is being more paid attention than LCD (Liquid Crystal display) with the light source from the back. The vapor deposition process is most essential in manufacturing OLED display. The temperature distribution of the linear cell in this process is closely related to securing the uniformity of organic materials on the substrate. This work analyzed the temperature distribution depending on the intervals between the crucible and the heating band as well as on the amount of the heat flux from the heating band. Moreover, the roles of the water jacket and the configuration of the cover within the linear cell were examined through the temperature analysis for six configurations of the linear cell. Under the above temperature analysis, the variations in the intervals and the amount of the heat flux were considered to have an effect on building the uniform temperature distribution within the crucible. It is predicted that the water jacket and the adequate configuration of the cover will prevent the blowout and clogging phenomena, respectively. The results can be used as the fundamental data for designing the optimal linear cell.     

有机薄膜电致发光器件

将无机薄膜电致发光器件和有机薄膜电致发光器件作了一个比较,并给出了有机薄膜电致发光器件的基本结构及其功能层材料选择的依据。最后分析了一个实际制备的双层器件。     

Effects of ITO surface modification using self-assembly molecules on the characteristics of OLEDs

Indium tin oxide (ITO) has been commonly used as an anode of organic light emitting diode (OLED), because of relatively high work function, high transmittance, and low resistance. However, interface property between ITO and adjacent organic layer limits hole injection from the anode electrode. We have synthesized 4'-nitrobiphenyl-4-carboxylic acid (NBCA) and fabricated the hole-only device consisting of ITO/NBCA self-assembled monolayer (SAM)/TPD (1500A)/Al (500A) and the organic light emitting diode (OLED) consisting of ITO/NBCA SAM/TPD (600A)/Alq(3) (600A)/Al (600A). The prepared hole-only device with NBCA exhibited lower driving voltage than the device using 4-nitrobenzoic acid (NBA). OLED using NBCA also showed high external quantum efficiency.     

有机发光显示器件的研究进展

有机发光显示器件的自主发光、低功耗、宽视角和快响应速度等优点,使之成为新一代平板显示器件的有力竞争者。在阐述有机发光材料和有机显示面板研究进展的基础上,重点介绍了有机显示器件中两种较为成熟的驱动电路及其优缺点,论文同时还对上述核心技术目前存在的问题进行了简要的分析。最后讨论了有机显示实现大规模产业化所面临的机遇和挑战。     

A study on the new substrate handler for the OLED evaporating process system

Trends in display sizes have hauled the enlargement of mother glass substrates. The enlargement of substrates requires the improvement of the evaporation system design for organic light-emitting device (OLED) fabrication process. Some difficulties may arise regarding the deflection of a large glass substrate during its aligning operation of the vacuum evaporation process due to its thinness. In the case of the 3G OLED glass substrate, the deflection is 1～3 mm. But for the 4G OLED, the deflection of the glass is 34 mm under clamping-end boundary condition. Therefore, it is difficult to align the keys and the marks in the 4G glass substrate. To address the glass-deflection problem during the aligning operation, a new glass handling method is proposed in this study. The glass deflection can be largely improved by applying the boundary conditions of the glass substrate. The aim of this study is to simulate a glass substrate and to propose a new design concept for the glass handler of the evaporation system for improving the aligning accuracy. Experiments were conducted to verify the effectiveness of the proposed method for minimizing glass deflection. This new design of a glass substrate handler may be useful in manufacturing large OLED displays.     

基于CCD器件信号调理电路的研究

采用电荷藕合器件（CCD）设计了有限脉冲响应系统，该系统可以作为补偿网络补偿仪器、传感器之类的各种测量器件或系统的频率响应特性，以拓展其工作频带。本设计的主要优点是其柔性，只要对CCD的加权电阻以及CCD所能工作的时钟频率加以变化，即可很容易地适应于补偿任意给定的未补偿的非零响应。最后，在计算机模拟仿真的条件下，证实了设计原理的正确性，并给出了一些结论。     

细直梁弯曲振动中的局域共振带隙

通过将声子晶体中的局域共振思想引入到细直梁的结构设计中,构造了一种具有低频局域共振带隙的周期结构细直梁。采用传递矩阵法计算了周期边界条件下该细直梁弯曲振动中的弹性波能带结构,计算结果表明该结构中存在低频弯曲振动带隙。采用有限元法计算了有限周期该细直梁的振动传输特性。以有机玻璃、橡胶/铜块振子构成的该局域共振细直梁为例,采用振动试验方法对其振动传输特性进行了测试。试验结果同理论及仿真结果相吻合。结果表明,局域共振结构可大大降低带隙频率,并增大带隙衰减。梁类结构是噪声及振动控制领域研究的主要对象之一,局域共振结构的应用为其提供了一种新的思路。