# US 9,039,474 B2 · Magnetically adjusting color-converting materials within a matrix and associated devices, systems, and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,474 B2 - Document ID: US9039474B2 - Status: Granted - Kind: B2 - Application number: 13/294,780 - Filed: 2011-11-11 - Published: 2013-05-16 - Granted: 2015-05-26 - Earliest claimed: 2011-11-11 - Assignees: Micron Technology, Inc. - Applicants: Sameer S. Vadhavkar; Tim J. Corbett; Xiao Li - Inventors: Sameer S. Vadhavkar; Tim J. Corbett; Xiao Li - Web page: https://patentgrep.com/patent/US9039474B2 ## CPC - H10H 20/8512: {Wavelength conversion materials} - H01F 1/083: {in a bonding agent} - H10H 20/0361: {of wavelength conversion means} - H10H 20/8513: {having two or more wavelength conversion materials} - H10H 20/8515: {not being in contact with the bodies} - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract Magnetically adjusting color-converting particles within a matrix and associated devices, systems, and methods are disclosed herein. A magnetic-adjustment process can include applying a magnetic field to a mixture including a non-solid matrix and a plurality of color-converting particles (e.g. magnetically anisotropic color-converting particles). The magnetic field can cause the plurality of color-converting particles to move into a generally non-random alignment (e.g., a generally non-random magnetic alignment and/or a generally non-random shape alignment) within the non-solid matrix. The non-solid matrix then can be solidified to form a solid matrix. A magnetic-adjustment process can be performed in conjunction with testing and/or product binning of solid-state radiation transducer devices. For example, a position, direction, strength, or duration of a magnetic field used to perform a magnetic-adjustment process can be controlled according to optical output collected from a solid-state radiation transducer device. Measuring the optical output and performing the magnetic-adjustment process can be at least partially concurrent. ## Claims ### Claim 1 A method, comprising: applying a first magnetic field to a first mixture that includes a first non-solid matrix and color-converting particles within the first matrix, so that the color-converting particles within the first matrix move into a first non-random alignment within the first matrix, the first mixture forming a portion of a device; increasing a solidity of the first matrix after the color-converting particles within the first matrix move into the first non-random alignment; adding a second mixture to the device after increasing the solidity of the first matrix, the second mixture including a second non-solid matrix and color-converting particles within the second matrix; and applying a second magnetic field to the second mixture so that the color-converting particles within the second matrix move into a second non-random alignment within the second matrix. ### Claim 2 (depends on 1) The method of claim 1, wherein the color-converting particles within the first matrix are magnetically anisotropic. ### Claim 3 (depends on 2) The method of claim 2, wherein the color-converting particles within the first matrix have an average aspect ratio from about 2 to about 10. ### Claim 4 (depends on 2) The method of claim 2, wherein the first non-random alignment is a non-random shape alignment. ### Claim 5 (depends on 2) The method of claim 2, wherein the first non-random alignment is a non-random magnetic alignment. ### Claim 6 (depends on 2) The method of claim 2, wherein the color-converting particles within the first matrix include a transparent magnetic material. ### Claim 7 (depends on 2) The method of claim 2, wherein the color-converting particles within the first matrix include a color-converting material functionalized with a magnetic functional group. ### Claim 8 (depends on 2) The method of claim 2, wherein the first matrix is transparent. ### Claim 9 (depends on 1) The method of claim 1, wherein increasing the solidity of the first non-solid matrix includes solidifying the first non-solid matrix to form a solid matrix. ### Claim 10 (depends on 9) The method of claim 9, further comprising attaching the solid matrix to a solid-state radiation transducer such that the solid matrix is positioned along a radiation path along which radiation is emitted or received by the radiation transducer. ### Claim 11 (depends on 10) The method of claim 10, wherein the solid matrix is optically transparent. ### Claim 12 (depends on 10) The method of claim 10, wherein attaching the solid matrix to the radiation transducer includes flip-chip mounting the radiation transducer to the solid matrix. ### Claim 13 (depends on 10) The method of claim 10, wherein the radiation transducer is a light-emitting diode. ### Claim 14 (depends on 1) The method of claim 1, wherein increasing the solidity of the first non-solid matrix includes increasing the solidity of the first non-solid matrix while applying the first magnetic field. ### Claim 15 (depends on 1) The method of claim 1, further comprising combining the first mixture with a radiation transducer before applying the first magnetic field. ### Claim 16 (depends on 1) The method of claim 1, wherein the color-converting particles within the first matrix and the color-converting particles within the second matrix include different color-converting materials. ### Claim 17 A method, comprising: measuring an optical output of a solid-state radiation transducer (“SSRT”) device that includes a non-solid matrix and color-converting particles within the non-solid matrix; applying a magnetic field to the SSRT device to move the color-converting particles into a non-random alignment within the non-solid matrix and thereby change a proportion of optical paths through the non-solid matrix that the color-converting particles occupy; and increasing a solidity of the non-solid matrix after the color-converting particles move into the non-random alignment. ### Claim 18 (depends on 17) The method of claim 17, wherein increasing the solidity of the non-solid matrix includes solidifying the non-solid matrix to form a solid matrix. ### Claim 19 (depends on 17) The method of claim 17, wherein the optical output of the SSRT device changes after the color-converting particles move into the non-random alignment. ### Claim 20 (depends on 17) The method of claim 17, wherein applying the magnetic field includes applying a H-type magnetic field to the SSRT device to increase color conversion by the color-converting particles. ### Claim 21 (depends on 17) The method of claim 17, wherein applying the magnetic field includes applying a B-type magnetic field to the SSRT device to decrease color conversion by the color-converting particles. ### Claim 22 (depends on 17) The method of claim 17, wherein the optical output of the SSRT device corresponds to a correlated color temperature of the SSRT device and the correlated color temperature of the SSRT device changes after the color-converting particles move into the non-random alignment. ### Claim 23 (depends on 17) The method of claim 17, further comprising controlling a position, direction, strength, and/or duration of the magnetic field based on the optical output. ### Claim 24 (depends on 17) The method of claim 17, wherein the color-converting particles are evenly distributed within the non-solid matrix before applying the magnetic field and the color-converting particles are clustered within a layer of the non-solid matrix after applying the magnetic field. ### Claim 25 (depends on 17) The method of claim 17, wherein measuring the optical output and applying the magnetic field are at least partially concurrent. ### Claim 26 (depends on 25) The method of claim 25, wherein the optical output corresponds to a performance characteristic of the SSRT device, applying the magnetic field causes the performance characteristic to change, and applying the magnetic field includes applying the magnetic field until the performance characteristic reaches a threshold value. ### Claim 27 A method, comprising: applying a magnetic field to a mixture that includes a non-solid matrix and color-converting particles within the non-solid matrix, so that the color-converting particles move into a non-random alignment within the non-solid matrix, the mixture forming a portion of a solid-state radiation transducer (“SSRT”) device; and increasing a solidity of the non-solid matrix after the color-converting particles move into the non-random alignment, wherein the color-converting particles have a first average distance from an SSRT of the SSRT device before applying the magnetic field, color-converting particles have a second average distance from the SSRT of the SSRT device after applying the magnetic field, and the first average distance is less than the second average distance. ### Claim 28 A method, comprising: applying a magnetic field to an optical component that includes a non-solid matrix and color-converting particles within the non-solid matrix, wherein applying the magnetic field causes the color-converting particles to move into a non-random alignment within the non-solid matrix and thereby changes a proportion of optical paths through the optical component that the color-converting particles occupy; and increasing a solidity of the non-solid matrix after the color-converting particles move into the non-random alignment. ### Claim 29 (depends on 28) The method of claim 28, wherein the color-converting particles are magnetically anisotropic. ### Claim 30 (depends on 28) The method of claim 28, wherein the color-converting particles have an average aspect ratio from about 2 to about 10. ### Claim 31 (depends on 28) The method of claim 28, wherein the non-random alignment is a non-random shape alignment. ### Claim 32 (depends on 28) The method of claim 28, wherein the non-random alignment is a non-random magnetic alignment. ### Claim 33 (depends on 28) The method of claim 28, wherein the color-converting particles include a transparent magnetic material. ### Claim 34 (depends on 28) The method of claim 28, wherein the color-converting particles include a color-converting material functionalized with a magnetic functional group. ### Claim 35 (depends on 28) The method of claim 28, further comprising measuring an optical output of an SSRT device including the optical component.