Browse Prior Art Database

Color Display Panel

IP.com Disclosure Number: IPCOM000061782D
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Grant, MA: AUTHOR

Abstract

A transmission liquid crystal display (LCD) matrix is deposited upon the aligned exposed edges of a set of superposed transparent plastic sheets, all but one of whose other edges or faces are rendered light reflective. Colored light is supplied to the one other exposed edge, preferably with three colors in successive groups of three, so as to emerge at the aligned exposed edges. Sections of the matrix are rendered transparent to allow the colored light to become visible. A plurality of rectangular transparent plastics sheets are formed into a stack 1 (Fig. 1). The sheets are similar in shape, and are silvered on all but two edges, including the large rectangular faces.

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Color Display Panel

A transmission liquid crystal display (LCD) matrix is deposited upon the aligned exposed edges of a set of superposed transparent plastic sheets, all but one of whose other edges or faces are rendered light reflective. Colored light is supplied to the one other exposed edge, preferably with three colors in successive groups of three, so as to emerge at the aligned exposed edges. Sections of the matrix are rendered transparent to allow the colored light to become visible. A plurality of rectangular transparent plastics sheets are formed into a stack 1 (Fig. 1). The sheets are similar in shape, and are silvered on all but two edges, including the large rectangular faces. The optical nature of the plastics material is such that multiple internal reflections take place and the input light energy is divided equally between the surfaces irrespective of area. If absorption is neglected, half the light leaves from each unsilvered surface. The sheets are arranged in groups of three. The first sheet 2 of each trio is unsilvered along two adjacent edges, one of which is used for the input of light and the other of which is for the output of light. The middle sheet 3 of each trio is similarly unsilvered along two adjacent edges, and the third sheet 4 of each trio is unsilvered along two opposite edges. The unsilvered input edges of the first sheets 2 are arranged at one end of the stack 1, the unsilvered input edges of the middle sheets 3 at the other end, and the unsilvered input e...