| 一种用于TFT-LCD液晶显示的片内门宽调制控制器的设计 |
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| 引用本文： | 叶强,来新泉,陈富吉,李演明,袁冰. 一种用于TFT-LCD液晶显示的片内门宽调制控制器的设计[J]. 半导体学报, 2008, 29(8): 1620-1626 |
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| 作者姓名： | 叶强 来新泉 陈富吉 李演明 袁冰 |
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| 作者单位： | 西安电子科技大学电路CAD所,西安,710071 |
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| 摘 要： | 为了防止在液晶显示面板上发生闪烁和减小栅驱动器的馈通现象,设计了一种基于升压型DC-DC和电荷泵的用于TFT-LCD液品显示的片内门宽调制控制器.该控制器能减小液品显示功耗,减少栅走线和液晶面板之间的耦合效应,其输出延时可调并输入到栅驱动器中,从而避免液晶显示设备错误的显示.采用该门宽调制器的基于电流模PWM升压型DC-DC和电荷泵的芯片已在UMC 0.6μm BCD工艺线投片,DC-DC的效率高达93%,可调电荷泵输出电压为10～30V,测试结果证明该门宽调制控制器电路工作良好,其面积为0.3mm2,静态电流小于1μA.
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| 关 键 词： | DC-DC转换器 电荷泵 门宽调制 可调延时 |
| 收稿时间： | 2015-08-18 |
| 修稿时间： | 2008-03-09 |
Design of an On-Chip Gate Pulse Modulate Controller for a TFT-LCD |
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| Ye Qiang, Lai Xinquan, Chen Fuji, Li Yanming, Yuan Bing. Design of an On-Chip Gate Pulse Modulate Controller for a TFT-LCD[J]. Journal of Semiconductors, 2008, In Press. Ye Q, Lai X Q, Chen F J, Li Y M, Yuan B. Design of an On-Chip Gate Pulse Modulate Controller for a TFT-LCD[J]. J. Semicond., 2008, 29(8): 1620.Export: BibTex EndNote |
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| Authors: | Ye Qiang Lai Xinquan Chen Fuji Li Yanming Yuan Bing |
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| Affiliation: | Institute of Electronic CAD,Xidian University,Xi'an 710071,China;Institute of Electronic CAD,Xidian University,Xi'an 710071,China;Institute of Electronic CAD,Xidian University,Xi'an 710071,China;Institute of Electronic CAD,Xidian University,Xi'an 710071,China;Institute of Electronic CAD,Xidian University,Xi'an 710071,China |
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| Abstract: | To prevent the flicker phenomenon on a liquid crystal and the feed through phenomenon in a gate driving unit of a liquid crystal display device,a gate pulse modulate controller is designed.It can minimize power consumption and reduce the coupling effect between gate line and pixel.It applies an output voltage with a time delay to the gate driving unit,thereby preventing erroneous operation of the liquid crystal display device.A current mode PWM Boost DC-DC converter and a charge pump employing this gate pulse modulate controller circuit have been implemented in a UMC 0.6μm-BCD process.The efficiency of the DC-DC converter is up to 93%,the output of the adjustable charge pump is 10～30V,and the results indicate that the circuit works well and effectively.The chip area of the gate pulse modulator circuit is 0.3mm2 and it consumes less than 1μA of quiescent current. |
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| Keywords: | DC-DC converter charge pump gate pulse modulate adjustable delay time |
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