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That's right, previous MOS sensors at 1/4 inch were only 0.35MP. Matsushita plans to begin mass production by this Fall.
Matsushita Electric Industries has developed a 2MP 1/4 inch size MOS sensor which has 6 times the pixel resolution of existing models.
With the newly developed MOS sensor, 2MP is made possible by electrical transistor sharing and wiring structure scheme; previous 1/4 inch current types only allow resolutions of up to 0.35MP. The transistor that perceives the light into pixels, while on current models would require 16 units for 4 pixels, has now been reduced to 7 units. Also, the size of 1 pixel has been miniaturized from 5.6μm to 2.25μm.
By adding a new circuitry scheme, the quantity of circuits has been reduced to half - this space can now be used for the photo diode allowing for a higher quality image. With these advancements, the operational voltage has been reduced from the current 3.3V to 2.5V, and less than 1/5th of the current power is required for the actual CCD sensor.
Matsushita plans on beginning mass production by the end of Fall 2004, and will aim the technology at cellular phones and mobile devices.

Inspired by: http://k-tai.impress.co.jp/cda/article/news_toppage/17632.html [1]
News Release: http://matsushita.co.jp/corp/news/official.data/data.dir/jn040215-1/jn040215-1.html [2]
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