Inventor
YAN HONGGANG
CN3 patents
Patents
3 patentsUS10700135B2Jun 30, 2020
Organic light-emitting diode display panel and organic light-emitting diode display device
SHANGHAI TIANMA AM OLED CO LTD0 citations39
US10529781B2Jan 7, 2020
Organic light-emitting diode display panel and organic light-emitting diode display device
SHANGHAI TIANMA AM OLED CO LTD0 citations39
US10170730B2Jan 1, 2019
Vacuum evaporation device and method thereof, and organic light-emitting display panel
SHANGHAI TIANMA AM OLED CO LTD0 citations39