Flat-panel display device, illumination system comprises a second part which is a detachable cover along which the radiation source can be removed
AssigneeU.S. Philips Corporation
InventorsCarel W. Fredriksz, Petrus A. J. G. Brouwer
Life of this patent
Estimating the term…
Abstract
The invention relates to a flat-panel display device (1) which is illuminated by a plate-shaped waveguide (7) which is irradiated by a radiation source (15) at one end face (25). The radiation source (15) is arranged in a reflective lighthousing (13), a first part (17) of which is an integral part of a support (3) and a second part (19) is detachable so that the radiation source (15) can be replaced with recesses in the lighthousing, so that the radiation source (15) is space apart from the reflector (29) and at a distance d from the waveguide (7). FIG. 1.
Claims18
A flat-panel display device comprising an illumination system and a transmission display panel, the illumination system comprising a support, a plate-shaped waveguide and at least one lighthousing accommodating a tubular radiation source having a radius r for illuminating at least one end face of the waveguide, and a reflector for reflecting radiation emitted by the radiation source towards the waveguide, characterized in that the lighthousing comprises a first part which is an integral part of the support and a second part which is a detachable cover along which the radiation source can be removed, and further characterized in that means are provided for securing the radiation source in a position which is spaced apart from the reflector and at a distance d from the waveguide, and further characterized in that recesses are provided in the lighthousing, and further characterized in that said position is determined by cooperation between at least the securing means and the recesses.
Dependencies are inferred from the claim text.