The bigger the better is no longer the craze. Now, the world seems to be in love with the miniature items, smaller sizes in especially, electronic goods. Just consider this cute small CyberDisplay LCD from Kopin, the supposed smallest display in the LCD world. Koipn, unveiled this new display at the CES 2008. The company is eyeing the laptop, LCD TV and video eyewear application market. Diagonally measured, it is 0.44 inch, even smaller than a coin with a low resolution of 800×600. It also meets the SVGA standards and boasts of good resolution. Koipn claims to have reduced the pixel size 1000 times to get proper resolution setting.
According to John Fan, president and CEO, Kopin, it was quite a challenge to reduce the full-color pixel size from 14.1 um2 to 11.25 um2. The company used the transmissive technology, which requires each pixel to accommodate transistors as well as control light output. They reduced the transistor’s size to fit in to the requirement.
Hong Choi, CTO, Kopin further explained,
As the pixel size becomes smaller, the diffraction and birefringence effects become stronger, increasing the crosstalk and reducing the contrast ratio.
They also faced a problem to fit the control circuits in such a small area. Another unique thing about this LCD display screen is its 8-inch silicon processing that takes care of the transistors and multilevel metallization. The new display is around 45% smaller than the 0.59-inch diagonal display, which Kopin already had. It uses 30% less power than the previous one. Kopin used nanotechnology-based process to make the liquid crystal material align properly, which in turn required some improvement in its liquid crystal assembly process. Anyway, this display is nevertheless praiseworthy and opens up new doors for better resolution in smaller size displays. Be it our mobile phones or small MP3 players, these display screens would give a promising value add.
Source: Optics Org
