BLACKLIGHT CONTROL FOR A DISPLAY DEVICE

摘要

A display device comprises a matrix (11) of pixels (10) arranged in rows and columns, each pixel (10) being selectively settable into a light transmissive condition and an opaque condition, and an illumination system, comprising an array of elongate elements (4, 5, 6) which provide light in response to electrical impulses, the elements (4, 5, 6) being arranged side by side to give a striped appearance and to face the matrix (11). Adjacent elements provide light having a different one of a plurality of colours. The matrix (11) is addressed using a row by row addressing sequence. During part of this sequence, a row of pixels (10) is illuminated with light of a first colour from a first element, whilst a remote row of pixels is illuminated with light of a different colour from a further element. This enables more efficient illumination of the matrix (11) than with conventional colour sequential displays in which all rows are illuminated with the same colour at the same time.