RESIN COATING DEVICE AND RESIN COATING METHOD
In a resin coating used for manufacturing an LED package including an LED element coated with resin containing phosphor, a light-transmitting member test-coated with resin for an emission characteristic measurement on a light-transmitting member placing section including a light source unit, a deviation between a measurement result of an emission characteristic of light emitted from the resin coated on the light-transmitting member measured by an emission characteristic measurement unit by irradiating the resin with excitation light emitted from the light source unit and a prescribed emission characteristic is obtained, and an appropriate resin coating amount of the resin to be coated on the LED element for an actual production is derived based on the deviation.
1 . A resin coating device which is used in an LED package manufacturing system for manufacturing an LED package comprising an LED element mounted on a substrate and coated with resin containing phosphor, and which coats the LED element mounted on the substrate with the resin, said resin coating device comprising:
a resin coating section which discharges the resin by variably adjusting an amount thereof and which coats an arbitrary coating target position with the resin;
a coating control unit which controls the resin coating section to execute a measurement coating process in which a light-transmitting member is test-coated with the resin for measuring an emission characteristic and a production coating process in which the LED element is coated with the resin for an actual production;
a light-transmitting member placing section which comprises a light source unit which emits excitation light which excites the phosphor, and on which the light-transmitting member coated with the test-coated resin is to be placed in the measurement coating process;
an emission characteristic measurement unit which measures an emission characteristic of light emitted from the resin coated on the light-transmitting member by irradiating the resin with the excitation light emitted from the light source unit;
a coating amount derivation processing unit which obtains a deviation between a measurement result of the emission characteristic measurement unit and a prescribed emission characteristic, and which derives an appropriate resin coating amount of the resin to be coated on the LED element for the actual production based on the deviation; and
a production execution processing unit which informs the coating control unit of the appropriate resin coating amount to execute the production coating process to coat the LED element with the appropriate resin coating amount of the resin.
2 . The resin coating device according to claim 1 ,
wherein an LED element is used as the light source unit.
3 . A resin coating method which is used in an LED package manufacturing system for manufacturing an LED package comprising an LED element mounted on a substrate and coated with resin containing phosphor, and which coats the LED element mounted on the substrate with the resin, said resin coating method comprising:
a measurement coating step of test-coating a light-transmitting member with the resin by a resin coating section which discharges the resin by variably adjusting an amount thereof;
a light-transmitting member placing step of mounting the light-transmitting member coated with the test-coated resin on a light-transmitting member placing section which comprises a light source unit which emits excitation light which excites the phosphor;
an emission characteristic measurement step of measuring an emission characteristic of light emitted from the resin coated on the light-transmitting member by irradiating the resin with the excitation light emitted from the light source unit;
a coating amount derivation processing step of obtaining a deviation between a measurement result of the emission characteristic measurement unit and a prescribed emission characteristic, and deriving an appropriate resin coating amount of the resin to be coated on the LED element for an actual production based on the deviation; and
a production execution step of executing a production coating process to coat the LED element with the appropriate resin coating amount of the resin by informing a coating control unit controlling the resin coating section of the appropriate resin coating amount.
4 . The resin coating method according to claim 3 ,
wherein an LED element sealed by resin not containing phosphor is used as the light source unit,
wherein the prescribed emission characteristic is obtained such that a regular emission characteristic required for a completed product in which the resin coated on the LED element is cured is biased by a difference of the emission characteristic due to an uncured state of the resin.
5 . The resin coating method according to claim 3 ,
wherein the appropriate resin coating amount is finally derived by repeatedly executing the measurement coating step, the light-transmitting member placing step, the emission characteristic measurement step and the coating amount derivation processing step.