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In order to improve the difference of contact hole dry etching rate lead to SD line and P-Si contact area inconsistent problem, at the same time solve the SD and P-Si point contact problem caused by the ELA process leading to protrusion of P-Si surface, exploring the effect for the performance of TFT-LCD by the via different dry etching process could find the best via dry etching process. Two different samples of LTPS array was prepared by using BOE production line equipment, the contact hole process of sample 1 using the process traditional way (Just Contact Method), sample 2 using the new way (Side Contact Method). The rest of sample 1 and sample 2 process is same. The experimental results show that the many points U-I curve change from divergence to gather, electron mobility increase. SEM data show that the P-Si can be cut through completely by Side Contact Method. Conclusion: Side Contact Method is able to solve SD line and P-Si contact area inconsistent problem due to difference of contact hole etching rate, at the same time avoid the SD and P-Si point contact problem caused by the ELA process leading to P-Si surface protrusion. The TFT-LCD electrical performance is improved. And the Side Contact Method can reduce the process time, improve the capacity.
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huoxiaodi: ½ð±Ò+50, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-06-29 13:37:06
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ΪÁ˸ÄÉÆ ¹ý¿×µÄ ¸É·¨¿ÌÊ´ ÖÐ ¿ÌÊ´Â浀 ²»Í¬ µ¼Ö SDÏߺÍP-Si ½Ó´¥Ãæ»ý²»Ò»Ö µÄÎÊÌ⣬ͬʱ ½â¾ö ELA¹¤ÒÕ µ¼Ö P-Si ±íÃæÍ»Æð ¶ø Ôì³ÉSDÓëP-Si µã×´½Ó´¥ µÄÎÊÌ⣬̽¾¿ÁË ¹ý¿×µÄ ²»Í¬¸É·¨¿ÌÊ´¹¤ÒÕ ¶ÔTFT-LCD ÐÔÄܵÄÓ°Ï죬´ÓÖÐ ÕÒ³ö ×î¼ÑµÄ ¹ý¿×¸É·¨¿ÌÊ´¹¤ÒÕ¡£
In order to overcome the inconsistent contact area between SD line and  P-Si caused by the difference of etching rate in via hole dry etching technology, as well as to solve the point contact between SD line and  P-Si made by P-Si surface convex during the ELA process, we explored the influence of various via hold dry etching technology upon the property of TFT-LCD, so as to find the optimal various via hold dry etching technology.

ÀûÓà ¾©¶«·½²ú ÏßÉè±¸ÖÆ±¸ÁË Á½ÖÖ²»Í¬µÄ LTPSÕóÁÐ ÑùÆ·£¬ÑùÆ·Ò» µÄ¹ý¿×¹¤ÒÕ ²ÉÓà ´«Í³µÄ µ×²¿½Ó´¥·½Ê½£¬ÑùÆ·¶þ ²ÉÓà Ð嵀 ²àÃæ ½Ó´¥·½Ê½,ÑùÆ·Ò»ºÍÑùÆ·¶þ ÆäÓàµÄ ¹¤ÒÕ¹ý³ÌÒ»Ö¡£
Two different samples of LTPS array were prepared by using BOE production line equipment, wherein the sample 1 was prepared by adopting conventional Just Contact Method, while the sample 2 was prepared by adopting a new type of Side Contact Method. Besides the differences of contacting methods, there is no other differences of technological processes during making these two samples.


ʵÑé½á¹û±íÃ÷£º¶àµã µÄU-IÇúÏß ÓÉ ·¢É¢±äΪ¼¯¾Û£¬µç×ÓÇ¨ÒÆÂÊ ÓÐËùÌá¸ß£»SEMÊý¾Ý ±íÃ÷ ²ÉÓòàÃæ½Ó´¥·½Ê½ Äܹ» ÍêÈ« ½«P-Si¿Ì´©¡£
The experimental results show that the multipoint U-I curve changes from a divergent curve to a concentration curve, and electron mobility increases in some degree; In addition, the SEM data show that the P-Si can be cut through completely by Side Contact Method.

½áÂÛ£º²ÉÓà ²àÃæ½Ó´¥·½Ê½ Äܹ» Ã÷Ï﵀ ½â¾ö ¸É·¨¿ÌÊ´ ÖпÌÊ´ÂÊ µÄ²»Í¬ µ¼Ö SDÏߺÍP-Si½Ó´¥Ãæ»ý ²»Ò»Ö µÄÎÊÌ⣬ͬʱ ±ÜÃâÁË ELA¹¤ÒÕ µ¼Ö P-Si±íÃæÍ»Æð ¶øÔì³ÉSDÓëP-Si µã×´½Ó´¥µÄ ÎÊÌ⣬µçѧÐÔ ÄÜÓÐËù¸ÄÉÆ£¬Í¬Ê± ¼õÉÙÁË ¹¤ÒÕʱ¼ä£¬Ìá¸ßÁË ²úÄÜ¡£
Conclusion: Side Contact Method is able to overcome the inconsistent contact area between SD line and P-Si caused by the difference of etching rate of via hole dry etching technology, as well as to solve the point contact between SD line and P-Si made by P-Si surface convex during the ELA process,so that the TFT-LCD electrical performance can be improved. In addition the Side Contact Method can reduce the process time, and improve the productivity.
2Â¥2015-06-29 08:08:47
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