共查询到18条相似文献,搜索用时 46 毫秒
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有源OLED全p-TFT屏上驱动电路设计 总被引:1,自引:0,他引:1
为了提高显示屏的成品率,降低成本,提出了一种由全p沟道TFT构成的屏上驱动电路。基础电路部分包括反相器和移位寄存器,屏上驱动电路主要是行驱动电路和列驱动电路。行驱动电路和列驱动电路基本上都是由反相器和移位寄存器构成,全部采用p-TFT来构成驱动电路。该驱动电路工作正常,能够实现CMOS驱动电路的功能,驱动OLED器件正常发光。通过仿真验证和理论分析表明该驱动电路不仅性能稳定而且成本低、成品率高、外接引线少及外围驱动电路复杂性低。 相似文献
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Chi Zhang Jing Li Chang Bao Han Li Min Zhang Xiang Yu Chen Li Duo Wang Gui Fang Dong Zhong Lin Wang 《Advanced functional materials》2015,25(35):5625-5632
Tribotronics is a new field about the devices fabricated using the electrostatic potential created by contact electrification as a “gate” voltage to tune/control charge carrier transport in semiconductors. In this paper, an organic tribotronic transistor is proposed by coupling an organic thin film transistor (OTFT) and a triboelectric nanogenerator (TENG) in vertical contact‐separation mode. Instead of using the traditional gate voltage for controlling, the charge carrier transportation in the OTFT can be modulated by the contact‐induced electrostatic potential of the TENG. By further coupling with an organic light‐emitting diode, a contact‐electrification‐gated light‐emitting diode (CG‐LED) is fabricated, in which the operating current and light‐emission intensity can be tuned/controlled by an external force–induced contact electrification. Two different modes of the CG‐LED have been demonstrated and the brightness can be decreased and increased by the applied physical contact, respectively. Different from the conventional organic light‐emitting transistor controlled by an electrical signal, the CG‐LED has realized the direct interaction between the external environment/stimuli and the electroluminescence device. By introducing optoelectronics into tribotronics, the CG‐LED has open up a new field of tribophototronics with many potential applications in interactive display, mechanical imaging, micro‐opto‐electro‐mechanical systems, and flexible/touch optoelectronics. 相似文献
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This paper describes a novel current driving circuit for an active matrix organic light emitting diode (AMOLED). The proposed current driving circuit has a lower power consumption and higher chip density for the AMOLED display compared with the conventional one because all elements operate at a normal voltage and are shielded from the high voltage of the panel. The chip size and power consumption of the current driving circuit for an AMOLED can be improved by about 30 to 40% and 10 to 20%, respectively, compared with the conventional one. 相似文献
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一种新型的OLED像素补偿驱动电路 总被引:2,自引:2,他引:0
为了防止有机发光二极管(organiclight-emittingdiode,OLED)显示器随着使用时间增加而造成OLED像素驱动电路发生阈值电压和电源电压漂移,从而引起显示屏亮度不均匀和不稳定的现象,本文对OLED像素补偿驱动电路进行研究。首先对通用型的2T1C驱动电路进行分析,找出引起显示器亮度不均匀和不稳定的原因,然后以目前使用较多的4T1C像素补偿驱动电路为例,对该电路进行了深入的分析,指出这种电路结构的缺陷,最后针对这些缺陷,提出了改进的5T1C像素补偿驱动电路,并且对该电路进行了仿真,验证了其可行性。仿真结果表明,在显示阶段,输出电流稳定在2μA。基本可以改善OLED显示器亮度不稳定和不均匀的缺点。 相似文献
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近年来,PLED(聚合物发光二极管)和a-Si TFT(非晶硅薄膜晶体管)技术取得了巨大进展,两者的结合有望成为未来平板电视的主流.三星与杜邦公司已经研制成功14.1英寸的非晶硅薄膜晶体管聚合物发光二极管(a-Si TFT AM-PLED)全彩显示面板.本文介绍该a-Si TFTAMpLED的制作过程,讨论它独特的性能和成本优势,并分析未来平板电视的发展趋势. 相似文献
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有源矩阵有机发光二极管器件是移动应用市场很有吸引力的显示器。开发者们正迅速地逐步克服技术上的弱点。 相似文献
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用于AM-OLED的LTPS TFTs的阈值电压(Vth)和沟道迁移率(μ)在空间分布上是不够均匀的,用于AM-OLED的a-Si TFTs的Vth和μ会随时间偏移,这些缺点会造成显示屏亮度的不均匀性和不稳定性.为此,需要引入各种像素补偿电路,使显示屏发光亮度的均匀性和稳定性符合商品要求(文章分为两期刊登,本篇为第一部... 相似文献