Image display unit, method of driving image display unit, signal generator, signal generation program, and signal generation method

Abstract

The present disclosure relates to an image display unit and to a method of driving an image display unit, as well as to a signal generator, to a signal generation program, and to a signal generation method. A signal for a red sub-pixel signal, a signal for a green sub-pixel signal, a signal for a blue sub-pixel signal, and a signal for a white sub-pixel signal are generated based on an image signal for red display, an image signal for green display, and an image signal for blue display that are provided in accordance with an image to be displayed. Values of the red sub-pixel signal Rcvt, the green sub-pixel signal Gcvt, and the blue sub-pixel signal Bcvt are determined based on a first matrix and a second matrix, with use of a coefficient 'Purity', an additive-color-mixture matrix, and a purity coefficient '[Psi]', and a value of the white sub-pixel signal Wcvt is configured to be employed as a value of min (RnL, GnL, BnL). According to the invention, the luminance can be raised assuredly even in the case where display is performed by reflecting external light, etc.

Description

technical field [0001] The present invention relates to an image display unit and a driving method of the image display unit, and also relates to a signal generator, a signal generation program, and a signal generation method. Background technique [0002] In recent years, in an image display unit for color image display, in order to achieve higher luminance and other improvements, attention has been drawn to using a technique constructed as follows: For example, in addition to the red sub pixel, a green sub-pixel for green display, and a blue sub-pixel for blue display, and a white sub-pixel for white display is provided. [0003] For example, Japanese Patent No. 4120674 discloses an image display unit, which includes: a liquid crystal panel provided with display pixels, and the display pixels include transparent or white sub-pixels in addition to sub-pixels for color image display. sub-pixels in the area; a light emitter for illuminating the liquid crystal panel; and a di...

AI Technical Summary

Problems solved by technology

Therefore, such a technique is not suitable for controlling reflective image display units that perform display by reflecting external light, image display units that have light emitters that emit a fixed light intensity, and the like.

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