Most recent digital camera and imaging news items - RSSDigital camera and imaging news items - HTML

Casio announces staggering 546 ppi color TFT LCD

Casio announces that it has developed a 2.0-inch a-Si TFT color liquid crystal display with the industry's highest resolution of 546 pixels per inch. Casio's newly developed LCD, is based on its "hyper-amorphous silicon TFT" technology, which permits higher resolution and a higher aperture ratio. Combined with Casio's optimal design and manufacturing processes, the new 2 inch LCD is boasting QHD (Quarter High-Definition - 960×540 pixels). The LCD has a viewing angle of 160 degrees and displays16.77 million colors...

PRESS SUMMARY

Casio announces staggering 546 ppi color TFT LCD - digital camera and photography newsIndustry's Highest Resolution: 2.0-inch Screen with 960x540 Pixels

Casio Computer Co., Ltd., announced today that it has developed a 2.0-inch a-Si TFT (amorphous silicon thin-film transistor) color liquid crystal display with the industry's highest resolution* of 546 ppi (pixels per inch).
* As at September 24, 2008, for direct-view-type TFT LCDs. Based on Casio survey.

In recent years, industry has been calling for ever higher resolution in display modules, based on the shift to high image quality that has come with the widespread adoption of the full HD (1920x1080 pixel) standard. The structure for each pixel in a TFT LCD is comprised of an aperture that serves as the light shutter, and multiple light intercepting parts - signal lines, scanning lines, storage capacitors and transistors — which control the movement of the liquid crystals at the aperture. Accordingly, with conventional structures, if dot pitch was made any smaller there would not be enough space for the light aperture. This made it very difficult to realize any higher pixel density.

Casio's newly developed LCD, however, is based on the company's original HAST (hyper-amorphous silicon TFT) technology, which permits higher resolution and a higher aperture ratio. Combined with Casio's optimal design and manufacturing processes, the result is the new 2.0-inch LCD boasting QHD (quarter high-definition) and enhanced resolution while maintaining the required light aperture.

The amount of transmissive light loss (which results from higher pixel density) has been reduced by adopting a new structure based on a wiring design involving multi-layered wiring for transistors and their surrounds. Despite a reduction in dot pitch to a small 15.5 micrometers (as opposed to the 23 micrometers in Casio's current displays), it has been possible to maintain light aperture. The extreme pixel density that has been achieved with these technologies has allowed Casio to succeed in the development of the industry's highest resolution display, at 546 ppi.

Thanks to its high compatibility with the full HD standard, the new module will serve as a high quality TFT LCD with excellent display performance. It will be well suited to a variety of applications, including high quality still imagery and exceptionally clear video.  

Main Specifications of the Newly  Developed LCD

Display size: Landscape type - 2.0 inches
Number of pixels: 960×RGB×540
Resolution: 546ppi
Viewing angle (horizontally and vertically): 160 degrees
Number of colors: 16.77 million
September 25, 2008
go to top of page