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
A Plastic Leaded Chip Carrier (PLCC) package is disclosed. The PLCC package enables a narrow viewing angle without requiring a second lens. In particular, the PLCC package is provided 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.
Claims11
A Plastic Leaded Chip Carrier (PLCC) package, comprising:
- a lead frame;
- a plastic molded cup attached to the lead frame, the plastic molded cup comprising at least one cavity which forms a reflector cup and exposes one or more leads of the lead frame such that a light source can be positioned in the reflector cup and connected to the one or more leads, wherein the reflector cup comprises at least a first and second stage, the first stage having a first reflective surface tilt angle and the second stage having a second reflective surface tilt angle different than the first reflective surface tilt angle;
- and
- an encapsulant provided in the first stage to fill the first stage and not provided in the second stage, wherein the first reflective surface is rough and the second reflective surface is smooth.
A Plastic Leaded Chip Carrier (PLCC) package configured to reduce a viewing angle of light emitted by a light source mounted in the PLCC package, the PLCC package comprising:
- a reflector cup including:
- a first stage comprising a first reflective surface, the first stage being located at the bottom of the reflector cup and having an encapsulant provided therein to fill the first stage;
- and
- a second stage comprising a second reflective surface, the second stage being located adjacent to the first stage and not having the encapsulant provided therein, wherein the first reflective surface is rough and the second reflective surface is smooth,
- wherein the second reflective surface corresponds to a reflective surface of an insert that is positioned within the second stage, wherein the reflectance of the second reflective surface is higher than the reflectance of the first reflective surface, and wherein the angle at which the first reflective surface is tilted is different than the angle at which the second reflective surface is tilted.
Dependencies are inferred from the claim text.