KOREA WHO
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CEO of YEST
Jang Dong-bok
Heat-Treatment Engineer of 25 Years Faces HPSP Patent Risk
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Last Updated on Jul 21, 2026
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CEO of YEST
Copy Url : https://www.koreawho.com/profile/JangDongbok- Life Summary
Jang Dong-bok is the CEO of YEST.
He is working to develop YEST into a global total solution equipment provider through a diversified portfolio spanning semiconductors, displays, and environmental safety materials.
He was born in April 1969 in Chuncheon, Gangwon Province.
He graduated from Chuncheon High School and Incheon Polytechnic College, now JEI University.
He worked in the semiconductor industry at companies including Sejong Semiconductor and KC Tech.
In 2000, he founded Youngin Tech, the predecessor of YEST.
He is one of the founders of Korea’s materials, parts, and equipment industry who helped localize semiconductor and display manufacturing equipment.
#JangDongbok #YEST #semiconductors #displayequipment #manufacturingequipment #environmentalsafety #materialscomponentsandequipment #equipmentlocalization #YounginTech #Koreanentrepreneur
He is working to develop YEST into a global total solution equipment provider through a diversified portfolio spanning semiconductors, displays, and environmental safety materials.
He was born in April 1969 in Chuncheon, Gangwon Province.
He graduated from Chuncheon High School and Incheon Polytechnic College, now JEI University.
He worked in the semiconductor industry at companies including Sejong Semiconductor and KC Tech.
In 2000, he founded Youngin Tech, the predecessor of YEST.
He is one of the founders of Korea’s materials, parts, and equipment industry who helped localize semiconductor and display manufacturing equipment.
#JangDongbok #YEST #semiconductors #displayequipment #manufacturingequipment #environmentalsafety #materialscomponentsandequipment #equipmentlocalization #YounginTech #Koreanentrepreneur
- Life Summary
- Career Highlights & Challenges
- · Technology-Driven Semiconductor and Display Equipment Specialist
- · Jang Dong-bok-Led Responsible Management
- · Earnings Decline, Profitability Maintained for Second Year
- · YEST Signs KRW 22.8 Billion Samsung Equipment Deal
- · First Shipment of High-Pressure Hydrogen Annealing Equipment
- · YEST Supplies Foldable Phone UTG Lamination Equipment to Fine M-Tec
- · Semiconductor Equipment Supply Deal With ULVAC Korea
- · YEST Signs Semiconductor Equipment Supply Deal with ULVAC Korea
- · YEST’s Technological Distinction Recognized in HPSP Patent Dispute
- · Jang Dong-bok Strengthens Management Accountability with Share Purchase
- · Supplies Next-Generation HBM ‘e-Furnace’ to SK Hynix
- · Supplies HBM Equipment to Nvidia Key Partner
- · KOSDAQ Listing
- · The Journey of YEST
- Vision and Goals
- Market and Social Evaluation
- Notable Incidents & Legal Affairs
- Professional Timeline
- Educational Background
- Awards & Recognitions
- Additional Information
- Notable Quotations
- Infographic & Photos