LED white lamp and encapsulation method thereof

• Main Authors: ZHANG SHANGSHENG, HUANG JIANDONG, WANG SHAOFANG, LI MANTIE
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2010
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; SEMICONDUCTOR DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; WEAPONS

The invention discloses an LED white lamp and an encapsulation method thereof, and the method comprises the following steps: firstly providing a concave stacker and an LED blue light chip fixed in the concave stacker, wherein the LED blue light chip has a positive electric pole and a negative electric pole which can be energized; secondarily connecting the positive and negative electric poles of the LED blue light chip with the positive and negative electric poles of the concave stacker respectively; mixing glue, green phosphor powder of silicate with red phosphor powder of nitride to prepare phosphor glue; then encapsulating the phosphor glue on the surface of the LED blue light chip of the concave stacker, baking and molding; and finally stripping the molded product from the concave stacker and performing spectrophotometric color. The white light of the LED white lamp prepared according to the above method has three wave peaks of blue, green and red, thus satisfying tri-phosphor conditions, improving color