Fine particle composition and light-shielding film using the same
View Patent ↗The present invention provides a light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, which film includes fine metallic compound particles having an average particle diameter of 60 to 3000 nm and a high-molecular-weight binder, and has an optical density of 2.0 or more in a light-shaded region.
1. A composition comprising colored metallic compound particles, a dispersing medium and a binder, wherein after the composition is formed into a film, the film has an optical density of 2.0 or more per 1 μm of dry-film thickness,wherein the particles are silver/silver sulfide composite particles or copper (II) sulfide/silver sulfide composite particles, wherein the copper (II) sulfide/silver sulfide composite particles consist of copper (II) sulfide and silver sulfide.
2. A composition according to claim 1 , wherein the average particle diameter of the metallic compound particles is 60 to 3000 nm.
3. A coating solution composition for forming a light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, containing the composition of claim 1 , wherein the light-shielding film comprises a polymer binder, and has an optical density of 2.0 or more in a light-shading region.
4. A coating solution composition according to claim 3 , Wherein the average particle diameter of the metallic compound particles is 60 to 3000 nm.
5. A coating solution composition according to claim 3 , wherein the thickness of the light-shielding film is 0.5 μm or less.
6. A method of forming a light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, comprising applying the coating solution composition of claim 3 to a substrate or a temporary support.
7. A composition according to claim 1 , wherein the particles are silver/silver sulfide composite particles.
8. A transfer material comprising a colored layer formed by applying a coating solution, containing the composition of claim 1 , to temporary support and drying it thereon.
9. A transfer material according to claim 8 , wherein the average particle diameter of the metallic compound particles is 60 to 3000 nm.
10. A light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, which light-shielding film comprises metallic compound particles having an average particle diameter of 60 to 3000 nm and a polymer binder, and has an optical density of 2.0 or more in a light-shading region, wherein the particles are silver/silver sulfide composite particles or copper (II) sulfide/silver sulfide composite particles.
11. A light-shielding film according to claim 10 , wherein the thickness of the light-shielding film is 0.5 μm or less.
12. A display substrate having the light-shielding film according to claim 10 .
13. A display substrate according to claim 12 , wherein the thickness of the light-shielding film is 0.5 μm or less.
14. A color filter for a display device comprising the light-shielding film according to claim 10 .
15. A color filter for a display device according to claim 14 , wherein the thickness of the light-shielding film is 0.5 μm or less.
16. A method of forming a light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, comprising transferring the colored layer of a transfer material onto a substrate, wherein the light-shielding film comprises metallic compound particles having an average particle diameter of 60 to 3000 nm and a polymer binder, and has an optical of 2.0 or more in a light-shading region,
wherein the transfer material comprises a colored layer formed by applying a coating solution to a temporary support and drying it thereon,
wherein the coating solution contains a composition comprising colored metallic compound particles, a dispersing medium and a binder, wherein after the composition is formed into a film, the film has an optical density of 2.0 or more per 1 μm of dry-film thickness, wherein the particles are silver/silver sulfide composite particles or copper (II) sulfide/silver sulfide composite particles.
17. A method of forming a light-shielding film according to claim 16 , wherein the thickness of the light-shielding film is 0.5 μm or less.
18. A method of forming a light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, comprising applying a coating solution composition to a substrate or a temporary support,
wherein the coating solution composition is a coating solution composition for forming a light-shielding film arranged in a display device and shading a part of a display screen as a part of a color filter, containing a composition comprising colored metallic compound particles, a dispersing medium and a binder, wherein after the composition is formed into a film, the film has an optical density of 2.0 or more per 1 μm of dry-film thickness, wherein the particles are silver/silver sulfide composite particles or copper (II) sulfide/silver sulfide composite particles, wherein the light-shielding film comprises a polymer binder, and has an optical density of 2.0 or more in a light-shading region.
wherein the thickness of the light-shielding film is 0.5 μm or less.