第一次提出了共栅极双栅结构用于不定形硅薄膜晶体管(a-Si TFTs)的像素结构,通过控制高源漏电压下的过大漏电流,解决有源矩阵电泳显示器(AM-EPD)响应速度慢的问题. 文章通过与单栅a-Si TFTs的对比分析,预期到采用等沟道长度双栅结构将在保持开态电流基本不变的情况下有效减小关态漏电流.SPICE模拟结果证明,双栅结构使关态漏电流减小一倍左右.为了衡量该结构对缩短电泳显示器响应时间的作用,建立了响应时间t与漏电流Ioff之间的函数关系.通过Matlab模拟,证明双栅结构在漏电流为20 pA时可将响应时间从380 ms降至320 ms;漏电流为35 pA时可将响应时间从530 ms降至360 ms,帧频由2 Hz提高到3 Hz. 根据建立的t-I off关系,指出降低电泳粒子半径和增大存储电容是进一步提高电泳显示器响应速度的关键.
参考文献
| [1] | Herz Erik.Electrophoretic display technology:The beginnings,the improvements,and a future in flexible electro-nics[D].Ithaca,NY:Materials Science and Engineering,Cornell University,2006. |
| [2] | 朱宛琳,王秀峰,王列松,等.电子墨水用SiO2白色电泳颗粒的表面包裹及荷电[J].液晶与显示,2007,21(2):140-145. |
| [3] | 杨澍,荆海,廖燕平,等.驱动电子墨水电子纸的柔性TFT背板制造技术[J].液晶与显示,2007,22(4):167-175. |
| [4] | Henzen Alex,Ailenei Neculai,van Reeth Frank,et al.An electronic ink low latency drawing tablet[C]//SID'04 Digest,San Jose:SID,2004:1070-1073. |
| [5] | Gelinck G H,Huitema H E A,van Mil M,et al.Rollable QVGA active-matrix displays based on organic electronics[C]//SID'05 Digest,San Jose:SID,2005:6-9. |
| [6] | Hopper M A,Novotny V.An electrophoretic display,its properties,model,and addressing[J].IEEE Transactions on Electron Devices,1979,26(8):1148-1152. |
| [7] | Novotny V,Hopper M A.Optical and electrical characterization of electrophoretic displays[J].J.Electrochem.Soc.:Solid-state Science and Technology,1979,11:2211-2216.. |
| [8] | Webber R M.Image stability in active-matrix microencapsulated electrophoretic displays[C]//SID'02 Digest,San Jose:SID,2002:126-129. |
| [9] | Pitt Michael G,Zehner Robert W,Amoundson Karl R,et al.Power consumption of micro-encapsulated electrophoretic displays for smart handheld applications[C]//SID'02 Digest,San Jose:SID,2002:1378-1381. |
| [10] | Comiskey Barrett,Albert J D,Yoshizawa H,et al.An electrophoretic ink for all-printed reflective electronic displays[J].Nature,1998,394:253-255. |
| [11] | Venugopal Sameer M,Allee David R.Intergrated a-Si:H source drivers for 4"QVGA electrophoretic display on flexible stainless steel substrate[J].J.Display Technology:IEEE,2007,3(1):57-63. |
| [12] | Gates Holly,Zehner Robert,Doshi Harit,et al.A5 sized electronic paper display for document viewing[C]//SID'05 Digest,San Jose:SID,2005:1-4. |
| [13] | Zehner Robert,Amundson Karl,Knaian Ara,et al.Drive waveforms for active matrix electrophoretic displays[C]//SID'03 Digest,San Jose:SID,2003:842-845. |
| [14] | Ota I,Ohonish J,Yoshiyama M.Electrophoretic image display(EPID) panel[J].Proceedings of the IEEE,1973,61(7):832-836. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%