# US 8,569,778 B2 · Narrow viewing angle plastic leaded chip carrier > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,569,778 B2 - Document ID: US8569778B2 - Status: Granted - Kind: B2 - Application number: 13/025,603 - Filed: 2011-02-11 - Published: 2012-08-16 - Granted: 2013-10-29 - Earliest claimed: 2011-02-11 - Assignees: Intellectual Discovery Co., Ltd. - Applicants: Eng Chuan Ong; Meng Ee Lee; Chiau Jin Lee - Inventors: Eng Chuan Ong; Meng Ee Lee; Chiau Jin Lee - Web page: https://patentgrep.com/patent/US8569778B2 ## CPC - H10H 20/856: Reflecting means - H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls - H10W 90/756: {between a chip and a stacked lead frame, conducting package substrate or heat sink} - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## 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. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The PLCC package of claim 1, further comprising a transition point which separates the first stage from the second stage. ### Claim 3 (depends on 1) The PLCC package of claim 1, wherein the at least a first stage differs from the at least a second stage by having at least one of a different height, a different area, and a different shape. ### Claim 4 (depends on 1) The PLCC package of claim 1, wherein the at least a first stage comprises a first reflective surface, wherein the at least a second stage comprises a second reflective surface, and wherein at least one characteristic of the first and second reflective surfaces are different. ### Claim 5 (depends on 4) The PLCC package of claim 4, wherein the reflectance of the first reflective surface is lower than the reflectance of the second reflective surface. ### Claim 6 (depends on 1) The PLCC package of claim 1, wherein the encapsulant comprises at least one of epoxy, silicone, a hybrid of silicone and epoxy, phosphor, a hybrid of phosphor and silicone, a hybrid of epoxy, silicone, and phosphor, an amorphous polyamide resin or fluorocarbon, glass, and plastic. ### Claim 7 (depends on 6) The PLCC package of claim 6, wherein the index of refraction in the at least a first stage is different from the index of refraction in the at least a second stage. ### Claim 8 (depends on 1) The PLCC package of claim 1, wherein the reflector cup further comprises at least a third stage, wherein the at least a second stage resides between the at least a first and third stage, and wherein the at least a third stage comprises a higher reflectance than the at least a first stage. ### Claim 9 (depends on 1) The PLCC package of claim 1, further comprising an insert that is configured to fit within the at least a second stage but not the at least a first stage, wherein the insert comprises a reflective surface that has a higher reflectance than a reflective surface of the at least a first stage. ### Claim 10 (depends on 9) The PLCC package of claim 9, wherein the insert is at least one of coated with a metallic substance and made of metal. ### Claim 11 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.