Patent ID: 6474825
Filing Date: 2002-11-05
Classification: G02B

Abstract:
A planar light-emitting display panel device of the edge-lighting type which comprises, as an assembly:(a) a rectangular planar light emitter having a rectangular light-conductive board; (b) at least one elongated light source held in contact with one of the edge surfaces of the light-conductive board; (c) a rectangular frame consisting of four frame branches, three of which are rigidly connected together to hold the planar light emitter and the elongated light source therein and the fourth of which is demountable, each having an inversely L-shaped cross section consisting of a top flat and a side flat so as to define a grooved space by the lower surface of the top flat and the upper surface of the planar light emitter; and (d) an image-bearing transparency, in which the image-bearing transparency is inserted into the grooved spaces in a withdrawable fashion.