Technical Background
Introduction
DOWA‘s UV LED (DoUVLEDs) comprises 3 key advanced technologies.
-
AlN template with supreme low dislocation density licensed from NGK (JP)
- Proven epitaxial growth technology licensed from Palo Alto Research Center (US), and RIKEN (JP).
- Well experienced processing technology that enable Epi Wafer to perform exllence.
Intellectual Property Informtion for reference
《DOWA's Proprietary》
*JAPAN Patents
4520972 4597259 4681684 4757834 4769905 4786587 4809471 4836218
4852174 4859050 4940359 5014217 5042100 5042380 5060875 5119463
5164641 5258285 5292456 5295164 5352248 5430467 5438534 5439526
5462032 5508539 5514274 5514341 5514920 5520638 5521068 5588296
5622454 5665463 5684551 5698321 5713650 5734250 5953447 5988489
5988568 6001627 6001756 6017834 6033342 6038564 6039026 6062436
6084196 6092961 6193132 6193443 6226627 6389178 6404655 6408344
6491635 6595682 6654731 6753995 6766243 6793815 6793863 6803411
6849641 6865784 6890707 6908422 6940664
*JAPAN Design
1408790 1553787 1553788 1553789 1553790 1553791 1599551 1601517
1655194 1655195
*USA Patent
7800096 8216869 8330168 8680509 8735938 8736025 8742396 8765222
8765584 8860294 8878189 8921227 9082893 9263642 9287366 9318653
9537066 9543469 9882088 10062806 10147842 10193016 10283671 10290771
10475964 10573783 11009629 11024769 11107952 11201261 11251338
*USA Design
D778849 D857638 D863238 D915308 D915309
*EUROPE Patent
EP2378574 EP2506316 EP2615650 EP3331035
*CHINA Patent
ZL200980157430.1 ZL200980158002.0 ZL201080021400.0 ZL201080048067.2
ZL201080063667.6 ZL201180020586.2 ZL201180037298.8 ZL201180047281.0
ZL201180047494.3 ZL201280065179.8 ZL201310011761.2 ZL201480043454.5
ZL201480044414.2 ZL201580066931.4 ZL201580067006.3 ZL201610077452.9
ZL201610140279.2 ZL201680008730.3 ZL201680043718.6 ZL201780081401.6
ZL201811466906.7
*CHINA Design
ZL201830071808.8 ZL201830076576.5
*KOREA Patent
101255489 101313989 101321654 101398340 101420037 101441833 101454980 101455036
101343198 101358541
*TAIWAN Patent
I462287 I479541 I502766 I506816 I513044 I528589 I543402 I544656
I651866 I659547 I666790 I683448 I722718 I722784 I734243 I742265
I757598
*GERMANY Patent
DE602009024529.5 DE602011041412.7 DE602013000656.3 DE602016042893.8
《Joint Intellectual Property》
*JAPAN Patents
4172657 4238372 4277116 4554469 4943132 5085067 5205265 5254263
5641173 5653232 5690738 5723431 5723442 5763858 5774712 5847732
5881689 5914656 5918367 5934720 5936696 6027027 6059238 6208563
*JAPAN Design
1442400 1445102 1454616 1470356 1470951 1594277 1594418 1594419
*USA Patent
7445672 7771849 7829435 8039130 8227789 8962362 8963290 9012935
9184338 9502603
*USA Design
D703862 D703863 D711581 D711582 D711583
*EUROPE Patent
EP1876270 EP2192625 EP2194167 EP2197049 EP2219236
*EUROPE Design
002210997-0001 002210997-0002
*CHINA Patent
ZL200980163264.6 ZL201080071007.2 ZL201180072086.3 ZL201180073850.9
*CHINA Design
ZL201230081602.6 ZL201230081651.X ZL201230081652.4
*KOREA Patent
100976268 101542026
*KOREA Design
30-0744663 30-0744683
《Exclusive License》
*JAPAN Patents
3768943 3831322 4107889 4458870 4514727 4545389 4671580 4679810
4712450 4748924 4748925 4767987 4781599 4794799 5236148
*USA Patent
6749957 6770914 6805982 6835965 6844611 6989202 7575942 7687824
RE40163 RE40485
*EUROPE Patent
EP1267393 EP1298709 EP1323851 EP1335435 EP1614775 EP1724378
*GERMANY Patent
DE602005049276.3 DE602006059155.1 DE60247281.4 DE60247946 DE60248744.7 DE60351739
《Non-Exclusive License》
*JAPAN Patents
4302469 4528489 4823466 5255759
*USA Patent
6869702 7501299 7547925 7691202 7714340 7812421 7872272 7955437
8088637 8154009 8513643
*EUROPE Patent
EP1431426 EP1786044
*GERMANY Patent
DE60339887.1
Notes
There are many other applications which are pending at the patent office in Japan
and many other countries.
This lists are as of May, 2022.
Outline of DOWA
DOWA Electronics Materials Co., Ltd - a Japanese manufacture and a subsidiaries of DOWA Holdings Co., Ltd - are supplying Compound Semiconductor industry with materials and devices for more than 30 years. The products, such as Gallium, Indium, GaAs substrates, and Red/ Infrared LEDs, are now predominant in the industries.
And In 2007, UV LED was invented UV LED as another major product.
