Method for making a phosphor layer

Details Method for making a phosphor layer Method for making a phosphor layer

1987-02-19

1988-07-19

Bell, Janyce A.

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 64, 427 67, 427 71, 427 73, 427240, 427231, 427232, 427336, B05D 506, B05D 312

Patent

active

047584491

ABSTRACT:
Making method for a phosphor layer of a small diameter cathode ray tube comprises application of a centrifugal force of above 100G in a direction parallel to the axis of a glass bulb toward its bottom panel to become a face plate, thereby forcedly making sedimentation of phosphor powder onto the inner surface of the bottom panel, and thus, by adoptation of the centrifugal force, a phosphor layer of very fine and dense configuration and uniform thickness is obtainable even using such small medium grain size of phosphor powder of under 4 .mu.m.

REFERENCES:
patent: 2119309 (1938-05-01), Batchelor
patent: 4264408 (1981-04-01), Benham

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