# US 2013/0278134 A1 · White light emitting device and display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0278134 A1 - Document ID: US20130278134A1 - Status: Published application - Kind: A1 - Application number: 13/868,628 - Filed: 2013-04-23 - Published: 2013-10-24 - Earliest claimed: 2012-04-23 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Kun Yoo KO; Masaaki SOFUE - Web page: https://patentgrep.com/patent/US20130278134A1 ## CPC - H10H 20/8513: {having two or more wavelength conversion materials} - C09K 11/06: containing organic luminescent materials - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0073: {Light emitting diode [LED]} - H05B 33/12: Light sources with substantially two-dimensional [2D] radiating surfaces - H10H 20/852: Encapsulations - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A white light emitting device includes: a blue light emitting diode (LED) which emits blue light; and a resin packing unit which encapsulates the blue LED, wherein the resin packing unit includes a first wavelength conversion material which, in response to being excited by the blue light, emits green light, a second wavelength conversion material which, in response to being excited by the blue light, emits red light, and a complex compound which absorbs light of a region in which the green light and the red light are mixed, the light of the region being included in white light implemented through a mixture of the green light and the red light excited together with the blue light. ## Claims ### Claim 1 A white light emitting device comprising: a blue light emitting diode (LED) which emits blue light; and a resin packing unit which encapsulates the blue LED, wherein the resin packing unit includes a first wavelength conversion material which, in response to being excited by the blue light, emits green light, a second wavelength conversion material which, in response to being excited by the blue light, emits red light, and a complex compound which absorbs light of a region in which the green light and the red light are mixed, the light of the region being included in white light implemented through a mixture of the green light and the red light excited together with the blue light. ### Claim 2 (depends on 1) The white light emitting device of claim 1, wherein the blue light emitted from the blue LED has a peak wavelength ranging from 430 nm to 460 nm. ### Claim 3 (depends on 1) The white light emitting device of claim 1, wherein the white light has a first peak wavelength in a wavelength band ranging from 525 nm to 545 nm and a second peak wavelength in a wavelength band ranging from 615 nm to 650 nm. ### Claim 4 (depends on 1) The white light emitting device of claim 1, wherein the complex compound absorbs light having a wavelength ranging from 550 nm to 610 nm. ### Claim 5 (depends on 1) The white light emitting device of claim 1, wherein the complex compound absorbs light having a wavelength ranging from 580 nm to 590 nm. ### Claim 6 (depends on 1) The white light emitting device of claim 1, wherein the complex compound has the following structural formula: ### Claim 7 (depends on 1) The white light emitting device of claim 1, wherein at least one of the first and second wavelength conversion materials includes ceramic phosphor. ### Claim 8 (depends on 1) The white light emitting device of claim 1, wherein at least one of the first and second wavelength conversion materials includes a quantum dot. ### Claim 9 A white light emitting device comprising: a blue light emitting diode (LED) which emits blue light having a peak wavelength ranging from 430 nm to 460 nm; a first wavelength conversion material which, in response to being excited by the blue light, emits green light; a second wavelength conversion material which, in response to being excited by the blue light, emits red light, wherein white light obtained from a mixture of the green light and the red light excited together with the blue light has a first peak wavelength in a wavelength band ranging from 525 nm to 545 nm and a second peak wavelength in a wavelength band ranging from 615 nm to 650 nm; and a complex compound made of a material which absorbs light between the first peak wavelength and the second peak wavelength. ### Claim 10 (depends on 9) The white light emitting device of claim 9, wherein the complex compound absorbs light having a wavelength ranging from 550 nm to 610 nm. ### Claim 11 (depends on 9) The white light emitting device of claim 9, wherein the complex compound absorbs light having a wavelength ranging from 580 nm to 590 nm. ### Claim 12 (depends on 9) The white light emitting device of claim 9, wherein the complex compound has the following structural formula: ### Claim 13 (depends on 9) The white light emitting device of claim 9, wherein at least one of the first and second wavelength conversion materials includes ceramic phosphor. ### Claim 14 (depends on 9) The white light emitting device of claim 9, wherein at least one of the first and second wavelength conversion materials includes a quantum dot. ### Claim 15 A white light emitting device comprising: a blue light emitting diode (LED) which emits blue light; a wavelength conversion material which, in response to being excited by the blue light, emits light, wherein white light obtained from a mixture of the light excited together with the blue light has a first peak wavelength in a wavelength band ranging from 525 nm to 545 nm and a second peak wavelength in a wavelength band ranging from 615 nm to 650 nm; and a complex compound made of a material which absorbs light between the first and second peak wavelengths. ### Claim 16 (depends on 15) The white light emitting device of claim 15, wherein the blue light has a peak wavelength ranging from 430 nm to 460 nm. ### Claim 17 (depends on 15) The white light emitting device of claim 15, wherein the complex compound absorbs light having a wavelength ranging from 550 nm to 610 nm. ### Claim 18 (depends on 15) The white light emitting device of claim 15, wherein the complex compound absorbs light having a wavelength ranging from 580 nm to 590 nm. ### Claim 19 (depends on 15) The white light emitting device of claim 15, wherein the complex compound has the following structural formula: ### Claim 20 (depends on 15) The white light emitting device of claim 15, wherein at least one of the first and second wavelength conversion materials includes at least one of ceramic phosphor and a quantum dot.