Background
A steady increase in screen size and resolution, phone features, and mobile applications has placed progressively greater power demands on phone batteries. The screen share in power consumption has gone up from 15-20% up to 50% of the handset power consumption. Genoa Color Technologies has developed PixcaleTM technology for implementation on multi-primary LCDs using standard TFT backplanes.
Features
- 40% power saving in the power consumption of Pixcale display compared to equivalent RGB display.
- Improved image and ambient light performance.
- Minimal changes in LCD manufacturing processes and fit to existing LCD supply chain
- The technology is cost neutral
The technology comprises of two elements:
- A Pixcale multi-primary panel – a standard RGB TFT backplane with a multi-primary color matrix.
- Pixcale processing – a spatial sub-pixel rendering algorithm and pixel arrangement unit.
Pixcale Advantages
The use of the multi-primary color matrix allows an increase in the color gamut combined with higher luminance efficiency resulting from the than higher average transparency of the multi-primary color matrix.
In addition, the Pixcale multi-primary technology minimizes the required changes at the panel level, simplifying design and reducing costs.
Figure 1: Sub-pixel layouts for RGB and RGBCY Pixcale configurations are shown here. The black lines indicate the pixel borders. In the case of the Pixcale panel, the magenta line shows a full color sequence.
Genoa Color Technologies demonstrate that Pixcale panels are well suited for high-pixel density displays in terms of the reproduction of images and text. Screen sizes and resolutions that are suitable for Pixcale are given in the table below.
Combined with the increased color gamut and luminance efficiency, Pixcale panels provide excellent image quality and longer battery operation in mobile-device applications.
