49-2: Field-Sequential-Colour Display with Adaptive Gamut

minimum necessary gamut is calculated frame-by-frame and the primaries are desaturated dynamically by simultaneously turning on several backlight colours during each primary field. Depending on the display response, this leads to better backlight utilization, increased luminance, and/or enhanced moving image quality. For a fast-response, three-primary field-sequential-colour display, the luminance can be increased by up to 300% for unsaturated content. 1. Introduction display power of a mobile phone is typically 20-30% of the total system power so stand-by and transflective modes, automatic backlight dimming, and screen saving are frequently used. On the other hand, high-bandwidth wireless infrastructures, digital TV broadcasting, and miniaturised gigabyte local storage will enable ubiquitous multimedia consumption on mobile devices, which require continuous and full display operation. This together with a moderate progress in battery technology and escalating CPU performance requirements will drain the battery unacceptably fast. At the same time, requirements on colour gamut, outdoor contrast, and moving image quality are higher than for traditional mobile applications. The objective of this work is to explore ways of lowering display backlight power consumption and maximise image quality in a highly dynamic fashion by adapting the display driving to the image content and luminous environment.