Chengheng TSAI

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Taipei City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Optical sheet, backlight unit, liquid crystal display device, and i...
- Patent number 11,360,350
- Issue date Jun 14, 2022
- Keiwa Inc.
- Chengheng Tsai
- G02 - OPTICS
Information Patent Grant
Optical sheet, backlight unit, liquid crystal display device, and i...
- Patent number 11,150,512
- Issue date Oct 19, 2021
- Keiwa Inc.
- Chengheng Tsai
- G02 - OPTICS
Information Patent Grant
Multilayer of light diffusers, backlight unit, and liquid crystal d...
- Patent number 11,143,914
- Issue date Oct 12, 2021
- Keiwa Inc.
- Chengheng Tsai
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, AND I...
- Publication number 20220326571
- Publication date Oct 13, 2022
- KEIWA INC.
- Chengheng TSAI
- G02 - OPTICS
Information Patent Application
OPTICAL SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, AND I...
- Publication number 20220004058
- Publication date Jan 6, 2022
- KEIWA INC.
- Chengheng TSAI
- G02 - OPTICS
Information Patent Application
DIFFUSION SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, AND...
- Publication number 20200409218
- Publication date Dec 31, 2020
- KEIWA INC.
- Chengheng TSAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
OPTICAL SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, AND I...
- Publication number 20200341335
- Publication date Oct 29, 2020
- KEIWA INC.
- Chengheng TSAI
- G02 - OPTICS
Information Patent Application
MULTILAYER OF LIGHT DIFFUSERS, BACKLIGHT UNIT, AND LIQUID CRYSTAL D...
- Publication number 20200292881
- Publication date Sep 17, 2020
- KEIWA INC.
- Chengheng TSAI
- G02 - OPTICS