Glass body

1 . A glass body comprising:

a glass plate having a first surface and a second surface; and

an antibacterial film that is formed on the first surface and in which copper ions are dispersed,

wherein the antibacterial film contains boron, and

D 2 /D 1 >0.8 is satisfied, where a thickness of the antibacterial film is D 1 and a thickness of the antibacterial film obtained after the glass body is heated at 600° C. is D 2 , and

wherein the antibacterial film comprises a network structure of Si and O, and wherein the copper ions are ionically bonded to the network structure.

2 . The glass body according to claim 1 ,

wherein the antibacterial film does not contain copper particles or copper compound particles with an outer diameter of 100 nm or more.

3 . The glass body according to claim 1 ,

wherein the antibacterial film contains at least one of a silicon oxide, zirconia, titania, and alumina as a main component.

4 . The glass body according to claim 1 ,

wherein the antibacterial film contains the copper ions in an amount of 1 to 40 mass % with respect to a main component that constitutes the antibacterial film.

5 . The glass body according to claim 1 ,

wherein the antibacterial film has a film thickness of 20 to 500 nm.

6 . The glass body according to claim 1 ,

wherein, when the maximum thickness of the antibacterial film is Dmax and the minimum thickness of the antibacterial film is Dmin, Dmax/Dmin≤7 is satisfied.

7 . The glass body according to claim 6 ,

wherein a portion of the antibacterial film with a thickness of the Dmin is located at an end portion of the antibacterial film.

8 . The glass body according to claim 1 ,

wherein the antibacterial film contains an acidic oxide serving as a network former.

9 . The glass body according to claim 1 ,

wherein the antibacterial film contains the boron in an amount of 0.1 to 10 mass % with respect to a main component that constitutes the antibacterial film.

10 . The glass body according to claim 1 ,

wherein after the glass body is immersed in water for 16 hours, an elution amount of the copper ions is 20 mass % or less of the copper ions contained therein before the immersion.

11 . The glass body according to claim 1 ,

wherein the glass body has a visible light transmittance of 90% or more.

12 . The glass body according to claim 1 ,

wherein the antibacterial film has a surface roughness Ra of less than 120 nm.

13 . The glass body according to claim 1 ,

wherein the glass body has a haze ratio of 3% or less.

14 . The glass body according to claim 1 , further comprising:

an anti-fingerprint layer formed on at least a portion of the antibacterial film.

15 . A method for producing the glass body of claim 1 , comprising:

producing a coating liquid by adding a copper salt and boric acid to a solution containing silicon alkoxide;

applying the coating liquid to at least one surface of a glass plate; and

heating the glass plate to which the coating liquid has been applied to a predetermined temperature or higher.