# US 7,745,985 B2 · Light-emitting module, and display unit and lighting unit using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,745,985 B2 - Document ID: US7745985B2 - Status: Granted - Kind: B2 - Application number: 11/995,290 - Filed: 2006-10-27 - Published: 2009-06-04 - Granted: 2010-06-29 - Earliest claimed: 2005-11-04 - Assignees: Panasonic Corporation - Inventors: Noriyasu Tanimoto; Hideo Nagai; Yoshirou Tooya - Web page: https://patentgrep.com/patent/US7745985B2 ## CPC - H10H 20/8513: {having two or more wavelength conversion materials} - H04N 9/315: {Modulator illumination systems (general applications of lighting devices F21V; general optical systems G02B; lamp houses for projectors not peculiar to the presence of an electronic spatial light modulator G03B21/20)} - F21S 6/00: Lighting devices intended to be free-standing (F21S9/00, F21S10/00, {F21S13/12} take precedence {lighting devices specially adapted to be transported from place to place, e.g. lighting devices carried on wheeled supports F21L; details of supports for lighting devices F21V21/00}) - F21Y 2115/10: Light-emitting diodes [LED] - H10H 20/0361: {of wavelength conversion means} - H10H 20/8516: {having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer or wavelength conversion layer with a concentration gradient} - H10W 72/01515: {Forming coatings} - H10W 72/075: {of bond wires} - H10W 72/07554: {changes in dispositions} - H10W 72/547: {Dispositions of multiple bond wires} - H10W 72/884: {Die-attach connectors and bond wires} - H10W 74/00: Encapsulations, e.g. protective coatings - H10W 90/00: Package configurations - H10W 90/724: {between a chip and a stacked insulating package substrate, interposer or RDL} - H10W 90/736: {between a chip and a stacked lead frame, conducting package substrate or heat sink} - H10W 90/756: {between a chip and a stacked lead frame, conducting package substrate or heat sink} - Y10S 362/80: Light emitting diode - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A light-emitting module (1) includes a substrate (10), a plurality of light-emitting elements (14) formed on the substrate (10), and phosphor layers (15) covering each of the light-emitting elements (14). Each of the phosphor layers (15) includes a first phosphor region (15a) and a second phosphor region (15b) that are divided in the direction substantially parallel to the surface of the substrate (10). Each of the first phosphor region (15a) and the second phosphor region (15b) includes a phosphor that absorbs light emitted from the light-emitting element (14) and emits fluorescence. The maximum peak wavelength of fluorescence emitted from the first phosphor region (15a) is longer than that of fluorescence emitted from the second phosphor region (15b). ## Claims ### Claim 1 A light-emitting module comprising: a substrate; a plurality of light-emitting elements formed on the substrate; and phosphor layers covering each of the light-emitting elements, wherein each of the phosphor layers comprises a first phosphor region and a second phosphor region that are divided in a direction substantially parallel to a surface of the substrates, each of the first phosphor region and the second phosphor region includes a phosphor that absorbs light emitted from the light-emitting element and emits fluorescence, a maximum peak wavelength of fluorescence emitted from the first phosphor region is longer than that of fluorescence emitted from the second phosphor region, and the first phosphor regions and the second phosphor regions are arranged alternately in each row and in each column with respect to the surface of the substrate. ### Claim 2 (depends on 1) A display unit comprising the light-emitting module according to claim 1 as a light source. ### Claim 3 (depends on 1) A lighting unit comprising the light-emitting module according to claim 1 as a light source. ### Claim 4 A light-emitting module comprising: a substrate; a plurality of light-emitting elements formed on the substrate; and phosphor layers covering each of the light-emitting elements, wherein each of the phosphor layers comprises a first phosphor region and a second phosphor region that are divided in a direction substantially parallel to a surface of the substrate, each of the first phosphor region and the second phosphor region includes a phosphor that absorbs light emitted from the light-emitting element and emits fluorescence, fluorescence emitted from the first phosphor region is red light having a maximum peak wavelength within a range of 590 to 650 nm, and fluorescence emitted from the second phosphor region is green light having a maximum peak wavelength within a range of 500 to 550 nm. ### Claim 5 (depends on 4) A display unit comprising the light-emitting module according to claim 4 as a light source. ### Claim 6 (depends on 4) A lighting unit comprising the light-emitting module according to claim 4 as a light source. ### Claim 7 (depends on 4) The light emitting module according to claim 4, wherein the light emitting elements comprise blue LEDs. ### Claim 8 A light-emitting module comprising: a substrate; a plurality of light-emitting elements formed on the substrate; and phosphor layers covering each of the light-emitting elements, wherein the light-emitting elements comprise first light-emitting elements and second light-emitting elements, the phosphor layers comprise first phosphor layers covering the first light-emitting elements and second phosphor layers covering the second light-emitting elements, each of the first phosphor layers includes a phosphor that absorbs light emitted from the first light-emitting element and emits fluorescence, each of the second phosphor layers includes a phosphor that absorbs light emitted from the second light-emitting element and emits fluorescence, fluorescence emitted from the first phosphor layer is red light having a maximum peak wavelength within a range of 590 to 650 nm, and fluorescence emitted from the second phosphor region is green light having a maximum peak wavelength within a range of 500 to 550 nm. ### Claim 9 (depends on 8) The light-emitting module according to claim 8, wherein the first phosphor layers and the second phosphor layers are arranged alternately in each row and in each column with respect to the surface of the substrate. ### Claim 10 (depends on 8) A display unit comprising the light-emitting module according to claim 8 as a light source. ### Claim 11 (depends on 8) A lighting unit comprising the light-emitting module according to claim 8 as a light source. ### Claim 12 (depends on 8) The light emitting module according to claim 8, wherein the first and second light emitting elements comprise blue LEDs. ### Claim 13 A light-emitting module comprising: a substrate; a plurality of sub-mount substrates mounted on the substrate, a plurality of light-emitting elements formed on the sub-mount substrates; and phosphor layers covering each of the light-emitting elements, wherein one light-emitting element is mounted on each of the sub-mount substrates, each of the phosphor layers comprises a first phosphor region and a second phosphor region that are divided in a direction substantially parallel to a surface of the substrate, each of the first phosphor region and the second phosphor region includes a phosphor that absorbs light emitted from the light-emitting element and emits fluorescence, and a maximum peak wavelength of fluorescence emitted from the first phosphor region is longer than that of fluorescence emitted from the second phosphor region. ### Claim 14 (depends on 13) A display unit comprising the light-emitting module according to claim 13 as a light source. ### Claim 15 (depends on 13) A lighting unit comprising the light-emitting module according to claim 13 as a light source. ### Claim 16 A lighting-emitting module comprising: a substrate; a plurality of sub-mount substrates mounted on the substrate, a plurality of light-emitting elements formed on the sub-mount substrates; and phosphor layers covering each of the light-emitting elements, wherein one light-emitting element is mourned on each of the sub-mount substrates, the light-emitting elements comprise first light-emitting elements and second light-emitting elements, the phosphor layers comprise first phosphor layers covering the first light-emitting elements and second phosphor layers covering the second light-emitting elements, each of the first phosphor layers includes a phosphor that absorbs light emitted from the first light-emitting element and emits fluorescence, each of the second phosphor layers includes a phosphor that absorbs light emitted from the second light-emitting element and emits fluorescence, and a maximum peak wavelength of fluorescence emitted from the first phosphor layer is longer Than that of fluorescence emitted from the second phosphor layer. ### Claim 17 (depends on 16) A display unit comprising the light-emitting module according to claim 16 as a light source. ### Claim 18 (depends on 16) A lighting unit comprising the light-emitting module according to claim 16 as a light source.