DOWA’s advanced technology brings LED into deeper

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Technical Background

Introduction

Introduction

DOWA‘s UV LED (DoUVLEDs) comprises 3 key advanced technologies.

  1. AlN template with supreme low dislocation density licensed from NGK (JP)

  2. Proven epitaxial growth technology licensed from Palo Alto Research Center (US), and RIKEN (JP).
  3. Well experienced processing technology that enable Epi Wafer to perform exllence.

Intellectual Property Informtion for reference

《DOWA's Proprietary》
*Japanese Patents
 4473283 4473284 4473285 4520972 4597259 4681684 4757834 4769905
   4786587 4809471 4819170 4836218 4852174 4859050 4940359 5014217
   5042100 5042380 5060875 5119463 5164641 5258285 5292456 5295164
   5352248 5372868 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 
*Japanese Design
   1408790 1553787 1553788 1553789 1553790 1553791 1599551 1601517    
*US Patent
     7800096 7812516 7878876 7956536 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   
*US Design 
     D778849 D857638 D863238
*European Patent
     2378574B 2506316B 2615650B
*Chinese Patent 
     ZL200810214903.4  ZL200980157430.1  ZL200980158002.0 
     ZL201080048067.2  ZL201080063667.6  ZL201180020586.2 
     ZL201180047281.0  ZL201180047494.3  ZL201280065179.8 
     ZL201480043454.5  ZL201480044414.2  ZL201580066931.4 
     ZL201610077452.9  ZL201610140279.2  ZL201680008730.3 
*Chinese Design 
     ZL201830071808.8  ZL201830076576.5
*Korean Patent
     1255489 1313989 1321654 1343198 1358541 1398340 1420037 101441833
     101454980 101455036 101503618     
*Taiwanese Patent
      I462154 I462287 I474512 I479541 I502766 I506816 I513044 I528589
      I543402 I544656 I651866 I659547 I666790

《Joint Intellectual Property》
*Japanese Patents
  3341948 4236121 4236122 4248005 4248006 4452788 4554469 4943132
      5085067 5205265 5254263 5641173 5653232 5690738 5723431 5723442
      5763858 5774712 5847732 5881689 5914656 5918367 5934720 5936696
      6027027 6059238 6208563
*Japanese Design
  1442400 1445102 1454616 1470356 1470951 1594277 1594418 1594419
*US Patent
    7445672 7771849 8039130 8227789 8962362 8963290 9012935 9184338
    9502603
*US Design
    D703862 D703863 D711581 D711582 D711583
*European Design
    002015347-0001 002015347-0002 002015347-0003 002210997-0001
    002210997-0002
*Chinese Patent
    ZL200980163264.6 ZL201080071007.2 ZL201180072086.3 ZL201180073850.9
*Chinese Design
    ZL201230081602.6 ZL201230081652.4 ZL201330084828.6 ZL201230081651.X
*Korean Patent
    101542026
*Korean Design 
    30-0698751 30-0744663 30-0744683

《Exclusive License》
*Japanese Patents
    3455512 3484427 3626423 3768943 3819713 3831322 3836697 3872327
    3888668 3941449 3954335 3973938 3987360 4001262 4063520 4063548
    4063838 4101510 4107889 4131618 4170269 4201969 4209097 4260380
    4291527 4312344 4331906 4351600 4425871 4458870 4514727 4642366
    4679810 4712450 4727169 4748924 4748925 4748945 4767987 4781599
    4794799
*US Patent
    6426519B1 6492191 6495894 6534795 6554896 6573535B2 6583468B2 6597023B2
    6605895B2 6623877B2 6649288B2 6649493B2 6677708B2 6693302B2 6703255B2 6706620B2
    6707076B2 6749957 6759715 6765244B2 6770914B2 6781164 6805982 6835965
    6844611 6989202 7067847 7199408 7479658 7575942 7687824 
*Korean Patent
    100447856 100508141B
*Taiwanese Patent
    221637 511157

《Non-Exclusive License》
*Japanese Patent
    3579344 3607664 3946969 4230715 4302469 4374163 4823466 5222683
    5255759
*US Patent 
    6703649 6709703B2 6727164B2 6869702 7955437
    6437374 6583449 7501299 7547925 7714340 7812421 7872272 8088637
    8154009 8513643
*European Patent
    1197995B 1207215B 1215308B 1431426B 1786044B
*Korean Patent
    447686 447855 100449787B
*Taiwanese Patent
    518670B 522472B 535220B


Notes
There are many other applications which are pending at the patent office in Japan and many other countries.
This lists are as of April, 2020.

 

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.

Outline of DOWA

CONTACT

USA:+1-408-236-7560
EU :+49-911-56989-320
Asia:+81-3-6847-1253

Copyright (c) 2018 DOWA Electronics Materials Co., Ltd. All Rights Reserved.