Invention Grant
- Patent Title: Polymeric antistatic coating for cathode ray tubes
- Patent Title (中): 阴极射线管聚合抗静电涂层
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Application No.: US560478Application Date: 1995-11-17
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Publication No.: US5773150APublication Date: 1998-06-30
- Inventor: Hua-Sou Tong , Chun-Min Hu
- Applicant: Hua-Sou Tong , Chun-Min Hu
- Applicant Address: TWX
- Assignee: Chunghwa Picture Tubes, Ltd.
- Current Assignee: Chunghwa Picture Tubes, Ltd.
- Current Assignee Address: TWX
- Main IPC: C09D5/24
- IPC: C09D5/24 ; H01B1/12 ; H01J29/86 ; H01J29/28 ; B32B27/00
Abstract:
A high molecular weight, i.e., molecular weight of 90,000-750,000, conductive polymer soluble in both water and alcohol is mixed with a solution of water, alcohol, tetraethoxysilane (TES), and nitric acid (HNO.sub.3) to provide an antistatic coating for a glass display panel of a cathode ray tube (CRT) for grounding static charge on the panel. Conductive polymers such as of polyaniline mixed with either polystyrene sulfonic acid or polyacrylic acid in a molecular ratio of 1:1 or 3,4 polyethylenedioxythiophene added to polystyrenesulphonate in a molecular ratio of 1:1 form a conductive complex which when mixed with a solution of water, alcohol, TES and HNO.sub.3 provides a coating solution with a resistivity in the range of 10.sup.7-10.sup.9 ohm/cm.sup.2 on the outer surface of the CRT display panel.
Public/Granted literature
- US5052421A Treatment of aluminum with non-chrome cleaner/deoxidizer system followed by conversion coating Public/Granted day:1991-10-01
Information query
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