| 摘要 |
A hydrophilic member comprising a glass plate (1) as a substrate, a tin(II)oxide (SnO<SB>2</SB>) film (2) formed on the glass plate and a silicon oxide (SiO<SB>2</SB>) film (3) formed on the tin(II)oxide (SnO<SB>2</SB>) film (2) as an overcoat layer thereof, wherein the glass plate (1) is made from a soda glass containing SiO<SB>2</SB> as the main component thereof the tin(II)oxide (SnO<SB>2</SB>) film (2) is formed, for example, by the CVD method and has a thickness of 10 to 800 nm and an average surface roughness (Ra) of 0.5 to 25 nm and the silicon oxide (SiO<SB>2</SB>) film (3) is formed by using sputtering deposition and has a thickness of 0.1 to 100 nm and an average surface roughness (Ra) of 0.5 to 25 nm. The average surface roughness (Ra) of the silicon oxide (SiO<SB>2</SB>) film (3) is the same as that of the tin(II)oxide (SnO<SB>2</SB>) film (2), since the silicon oxide (SiO<SB>2</SB>) film (3) is formed on the tin(II)oxide (SnO<SB>2</SB>) film (2), which results in that the irregularity of the tin(II)oxide (SnO<SB>2</SB>) film (2) is transferred, as it is, to the silicon oxide (SiO<SB>2</SB>) film (3). The hydrophilic properties of the member has advantages in that, after washing operation, it can be recovered in an extremely short time and also the hydrophilic properties thus recovered are durable for a long period of time. |
