Abstract: The present invention relates to a light generating device comprising a slab light guide (1), at least one light input unit (2) arranged on at least one side (10) of said light guide (1) comprising at least one light source (20) and a light incoupling means (21) for coupling light into said light guide (1), and at least one light output unit (3) arranged on at least one side (11) of said light guide (1). In order to provide a device that provides polarized light of a high homogeneity the light output unit (3) according to the present invention comprises a polarized light emitting waveguide plate (31) for selectively coupling light of a first polarization state out of said light guide (1). The present invention further relates to a display device, in particular an LCD, comprising a light generating device according to the invention.

Abstract: A transflective display (2) in e.g. the lid of a mobile display is used in the reflective mode in one viewing direction (frontlight) and in the transmissive mode in the other direction (backlight) when the lid is open.

Abstract: A back-lit colour display is disclosed, in which light from a backlight is filtered by a reflective filter structure arranged on a viewing side of the backlight. The reflective filter structure defines pixels having sub-pixels of red, green and blue colour. According to the invention, the filter structure comprises reflective regions having reflection bands that jointly cover the complete visible range of the spectrum, such that no gaps are present between the reflection bands. Preferably, the emission from the backlight is narrow band, and selected in such a way that the peak emission wavelength is within the corresponding reflection band, but close to the short wavelength cut-off thereof. Furthermore, the emission from the backlight is preferably selected to have a suitable overlap with the tri-stimulus functions of the human eye.

Abstract: A transflective display (2) in e.g. the lid of a mobile display is used in the reflective mode in one viewing direction (frontlight) and in the transmissive mode in the other direction (backlight) when the lid is open.