Liquid crystal color picture screen
AssigneeKoninklijke Philips Electronics N.V.
InventorsHans Nikol, Thomas Justel, Robert Van Asselt, Dirk Jan Broer
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Abstract
The invention describes a liquid crystal color picture screen with an improved luminous efficacy and an improved viewing angle. The liquid crystal color picture screen comprises a photoluminescent layer (7) which contains a dichroically absorbing color agent and an isotropically emitting color agent. FIG. 1
Claims11
A liquid crystal color picture screen provided with a light source (1), a polarizer (3), a liquid crystal cell comprising two transparent plates (4, 5) between which a liquid crystal material (6) is present, said plates (4, 5) each supporting a matrix of electrodes (9, 10), a front plate (8), and a photoluminescent layer (7), which layer comprises a dichroically absorbing color agent and an isotropically emitting color agent.
Dependencies are inferred from the claim text.