White light emitting device and display apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-033/50
H05B-033/12
C09K-011/06
F21V-008/00
H01L-033/52
출원번호
US-0558323
(2014-12-02)
등록번호
US-9190583
(2015-11-17)
우선권정보
KR-10-2012-0042228 (2012-04-23)
발명자
/ 주소
Ko, Kun Yoo
Sofue, Masaaki
출원인 / 주소
SAMSUNG ELECTRONICS CO., LTD.
대리인 / 주소
Sughrue Mion, PLLC
인용정보
피인용 횟수 :
0인용 특허 :
39
초록▼
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 gree
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.
대표청구항▼
1. A light emitter, comprising: a blue light emitting diode (LED) which emits blue light; anda wavelength converter which converts a portion of the blue light into non-blue light;wherein the blue light and the non-blue light are combined to produce white light, the white light having a plurality of
1. A light emitter, comprising: a blue light emitting diode (LED) which emits blue light; anda wavelength converter which converts a portion of the blue light into non-blue light;wherein the blue light and the non-blue light are combined to produce white light, the white light having a plurality of intensity peaks at a corresponding plurality of wavelengths; andwherein the light emitter further comprises an intensity reducing material which reduces an intensity of a portion of the white light between two of the intensity peaks. 2. The light emitter of claim 1, wherein the intensity reducing material comprises a compound represented by Formula 1: 3. The light emitter of claim 1, wherein the blue light emitted from the blue LED has a peak wavelength ranging from 430 nm to 460 nm. 4. The light emitter of claim 1, wherein the two intensity peaks comprise a first intensity peak in a wavelength band ranging from 525 nm to 545 nm and corresponding to green light, and a second intensity peak in a wavelength band ranging from 615 nm to 650 nm and corresponding to red light. 5. The light emitter of claim 1, wherein the intensity reducing material absorbs light having a wavelength ranging from 550 nm to 610 nm. 6. The light emitter of claim 1, wherein the intensity reducing material absorbs light having a wavelength ranging from 580 nm to 590 nm. 7. The light emitter of claim 1, wherein the wavelength converter includes ceramic phosphor. 8. The light emitter of claim 1, wherein the wavelength converter includes a quantum dot. 9. A display apparatus comprising a white light emitting device, the white light emitting device comprising: a blue light emitting diode (LED) which emits blue light; anda 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. 10. The display apparatus of claim 9, wherein the blue light emitted from the blue LED has a peak wavelength ranging from 430 nm to 460 nm. 11. The display apparatus of claim 9, 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. 12. The display apparatus of claim 9, wherein the complex compound absorbs light having a wavelength ranging from 550 nm to 610 nm. 13. The display apparatus of claim 9, wherein the complex compound absorbs light having a wavelength ranging from 580 nm to 590 nm. 14. The display apparatus of claim 9, wherein the complex compound comprises a compound represented by Formula 1: 15. The display apparatus of claim 9, wherein at least one of the first and second wavelength conversion materials includes ceramic phosphor. 16. The display apparatus of claim 9, wherein at least one of the first and second wavelength conversion materials includes a quantum dot. 17. The display apparatus of claim 9, wherein the white light emitting device includes an edge type backlight unit including a light guide plate and LED light source modules. 18. The display apparatus of claim 17, wherein the LED light source modules are disposed on both opposing lateral surfaces of the light guide plate. 19. A display apparatus comprising: a light emitting diode (LED) light source module which emits blue light; andan image display panel which receives the blue light emitted from the LED light source module and which displays an image,wherein the LED light source module includes a printed circuit board and the white light emitting device according to claim 9 mounted on the printed circuit board. 20. The display apparatus of claim 19 further comprising: a backlight unit including a light guide plate and the LED light source module disposed on at least one lateral surface of the light guide plate; andoptical sheets disposed between the light guide plate and the image display panel.
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