Apparatus and method for automatically mixing phosphor

• US 9,109,154 B2
• Filed: 11/04/2011
• Issued: 08/18/2015
• Est. Priority Date: 11/12/2010
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Choo Ho, Noh, Myeong Ho, Jeong, Song Ho, Lim, Dong Hee
• Primary Examiner(s): SOOHOO, TONY GLEN
• Application Number:
  US13/289,693
• Publication Number:
  US 20120123591A1
• Time in Patent Office: 1,383 Days
• Field of Search: 366/177.1, 366/144, 366/181.8, 366/182.1
• US Class Current: 1/1
• CPC Class Codes: B01F 33/848 using data, i.e. barcodes, 3D codes or similar type of tagging information, as instruction or identification codes for controlling the dispensing and mixing operations
• CPC Class Codes: B01F 33/85 Mixing plants with mixing receptacles or mixing tools that can be indexed into different working positions
• CPC Class Codes: B01F 35/881 by weighing, e.g. with automatic discharge
• CPC Class Codes: C09K 11/02 Use of particular materials as binders, particle coatings or suspension media therefor
• CPC Class Codes: C09K 11/08 containing inorganic luminescent materials

Abstract

An apparatus and method for automatically mixing a phosphor are provided, which are capable of automatically supplying accurate quantities of a phosphor and silicon to a mixing container using a phosphor supply unit and a silicon supply unit.

Claims

1. An apparatus comprising:

a container configured to receive a liquid silicone, and a powdered phosphor, wherein the container has a syringe structure including an outlet disposed at a lower portion thereof, and a mixture of the liquid silicone and the powdered phosphor is discharged into a light emitting diode (LED) package through the outlet;

a silicone supply unit configured to supply the liquid silicone to the container up to a predetermined quantity;

a phosphor supply unit configured to supply the powdered phosphor to the container up to a predetermined quantity; and

a transfer unit configured to transfer the container from the silicone supply unit to the phosphor supply unit, such that the container is sequentially provided with the liquid silicone and the powdered phosphor, and the outlet is prevented from being clogged by the powdered phosphor,

wherein the silicone supply unit and the phosphor supply unit have different structures from each other.

2. The apparatus of claim 1, further comprising:

a container supply unit disposed at an entrance of the transfer unit and configured to supply the container to the transfer unit; and

a container discharge unit disposed at an exit of the transfer unit and configured to discharge the container receiving the liquid silicone and the powdered phosphor, from the transfer unit.

3. The apparatus of claim 2, further comprising a first container sensing unit disposed at a connection portion, between the container supply unit and the transfer unit, and configured to detect the container being supplied from the container supply unit to the transfer unit.

4. The apparatus of claim 3, wherein:

the container comprises a barcode containing mixing information related to the liquid silicone and the powdered phosphor,

the first container sensing unit is configured to read the barcode of the container to identify the mixing information, and

the apparatus further comprises a control unit configured to control the transfer unit, the silicone supply unit, and the phosphor supply unit according to the mixing information of the barcode detected by the first container sensing unit.

5. The apparatus of claim 4, wherein the mixing information comprises a feed quantity of the liquid silicone and a feed quantity of the powdered phosphor.

6. The apparatus of claim 3, further comprising a second container sensing unit disposed at a connection portion between the container discharge unit and the transfer unit and configured to detect the container being discharged from the transfer unit to the container discharge unit.

7. The apparatus of claim 1, wherein the transfer unit comprises a weight measurement device configured to measure a weight change of the container.

8. The apparatus of claim 1, wherein a plurality of phosphor supply units are provided, the plurality of phosphor supply units being configured to supply different types of phosphors from one another, and arranged along a transfer path of the transfer unit.

9. An apparatus comprising:

a container configured to receive a first liquid silicone, a second liquid silicone, and a powdered phosphor;

a first silicone supply unit configured to supply the first liquid silicone to the container up to a predetermined quantity;

a second silicone supply unit configured to supply the second liquid silicone to the container up to a predetermined quantity;

a phosphor supply unit configured to supply the powdered phosphor to the container up to a predetermined quantity; and

a transfer unit configured to transfer the container from at least one of the first and second silicone supply unit to the phosphor supply unit, such that the container is sequentially provided with at least one of the first and second liquid silicone and the powdered phosphor, and the outlet is prevented from being clogged by the powdered phosphor,

wherein;

the container has a syringe structure including an outlet disposed at a lower portion thereof,

a mixture of the first liquid silicone, the second liquid silicone, and the powdered phosphor is discharged into an light emitting diode (LED) package through the outlet,

the first and second liquid silicone are mixed and then cured, and at least one of the first and second silicone supply units and the phosphor supply units have different structures.

10. The apparatus of claim 9, wherein the phosphor supply unit is disposed between the first and second silicone supply units with respect to a transfer direction of the transfer unit.

11. The apparatus of claim 9, wherein the phosphor supply unit is disposed after the first and second silicone supply unit with respect to a transfer direction of the transfer unit.

12. The apparatus of claim 9, wherein a plurality of phosphor supply units are provided, the plurality of phosphor supply units being configured to supply different types of phosphors from one another, and at least one of the plurality of phosphor supply units is disposed between the first and second silicone supply units with respect to a transfer direction of the transfer unit.