Narrow viewing angle plastic leaded chip carrier
AssigneeIntellectual Discovery Co., Ltd.
InventorsEng Chuan ONG, Meng Ee LEE, Chiau Jin LEE
Life of this patent
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Abstract
The PLCC package enables a narrow viewing angle without requiring a second lens by providing the PLCC package with a reflector cup having multiple stages where the geometry or some other characteristic of one stage is different from the geometry or some other characteristic of another stage.
Claims6
A plastic molded lead frame comprising a reflector cup and a light source mounted in the reflector cup, wherein the reflector cup is configured to reflect light emitted by the light source and reduce a viewing angle of the light source wherein the reflector cup comprises at least a first stage with a first reflective surface having a first reflective surface tilt angle, a second stage with a second reflective surface having a second reflective surface tilt angle different than the first reflective surface tilt angle and a first encapsulant filling the first stage but not within the second stage, and wherein the plastic molded lead frame does not include a convex or external lens within the reflector cup,
- wherein the first reflective surface is rough and the second reflective surface is smooth.
Dependencies are inferred from the claim text.