Nano Technology in Display

Bistable TN (BTN) and Bistable Bend Splay (BBS) LCDs

Truly Bistable LCD	Bistable Switching behavior

Technology:

Bistable LCDs have two or more stable states at zero bias. They can keep patterns/images at power off.

We have invented two such kinds of displays: truly bistable twisted nematic LCD and truly bistable bend-splay LCD.

Advantages:

High contrast ratio, wide viewing angle, power saving, and no additional manufacturing cost

Applications:

E-book and large commercial advertisement board.

Tech-Transfer Status:

Two Patents Granted:

1. H S Kwok, Fion Yeung and Y W Li, Bistable twisted nematic liquid crystal display based on dual frequency operation,

US Patent Number 7,551,252B2, July 2009.

2. H S Kwok and X J Yu, Bistable liquid crystal device, US Patent Number 7,557,884B2, July 2009.

Fast Switching LCDs

Response Time of Fast LCDs	HDTV using Fast LCDs

Technology:

The response time of traditional LCDs is around 25ms, and they cannot be applied directly to HDTV.

The response time of Samsung’s most recent HDTV is 15ms.

We have invented the world’s first zero-bias p LCD with very fast response time of less than 3ms.

Advantages:

Very fast response time (< 3ms), wide viewing angle, and no additional manufacturing cost.

Applications:

High Definition Television (HDTV)

Tech-Transfer Status:

Four Patents Granted:

1. H S Kwok, F S Yeung, F C Xie, O Tsui and P Sheng, 一种液晶取向层及其制作方法， Chinese Patent Number ZL 200480043132.7, December 2008.

2. H S Kwok, Fion Yeung, F C Xie, Ophelia Tsui and P Sheng, A liquid crystal alignment layer and methods of making thereof, Hong Kong patent number HK1102337, May 2009.

3. H S Kwok and F S Yeung, 一种改善的聚亚酰胺单元液晶显示器, Chinese patent number ZL200480043861.2, July 2009.

4. H S Kwok, F S Yeung, F C Xie, O K Tsui and P Sheng, Liquid crystal alignment layer and method of making thereof, US patent number 7,968,158B2, June 2011.