Light-shielding image-carrying substrate, method of forming light-shielding image, transfer material, color filter, and display device

1 . A light-shielding image-carrying substrate, comprising a substrate and a light-shielding image formed on at least part of at least one face of the substrate, wherein the light-shielding image comprises at least two layers, and at least one of the at least two layers is a light-absorbing layer containing shape-anisotropic fine metal particles, and at least one of the at least two layers is a reflected light-absorbing layer.

2 . The light-shielding image-carrying substrate of claim 1 , wherein at least one of the at least two layers is a resin layer.

3 . The light-shielding image-carrying substrate of claim 1 , wherein the shape-anisotropic fine metal particles have an average particle diameter of 10 to 1,000 nm.

4 . The light-shielding image-carrying substrate of claim 1 , wherein the aspect ratio of the shape-anisotropic fine metal particles is 1.2 to 100.

5 . The light-shielding image-carrying substrate of claim 1 , wherein the shape-anisotropic particles are fine metal particles having a width of number-average particle-diameter distribution (D90/D10), which is obtained by approximating the particle-diameter distribution to normal distribution, of at least 1.2 and less than 20.

6 . The light-shielding image-carrying substrate of claim 1 , wherein the reflectance of the light-absorbing layer at a wavelength of 555 nm is 0.5 to 30%.

7 . The light-shielding image-carrying substrate of claim 1 , wherein the optical transmission density of the reflected light-absorbing layer at a wavelength of 555 nm is 0.3 to 3.0.

8 . The light-shielding image-carrying substrate of claim 1 , wherein the optical transmission density of the light-shielding image at a wavelength of 555 nm is in the range of 4 to 20 per 1 μm of thickness.

9 . The light-shielding image-carrying substrate of claim 1 , wherein the reflectance at a wavelength of 555 nm, measured at the substrate side of the light-shielding image, is 0.01 to 2%.

10 . The light-shielding image-carrying substrate of claim 1 , wherein the total thickness of the light-shielding image is 0.2 to 0.8 μm.

11 . The light-shielding image-carrying substrate of claim 1 , wherein the shape-anisotropic fine metal particles are made of at least one metal selected from the group consisting of silver, nickel, cobalt, iron, copper, palladium, gold, platinum, tin, zinc, aluminum, tungsten, and titanium.

12 . The light-shielding image-carrying substrate of claim 1 , wherein the volumetric metal rate of the light-absorbing layer containing the shape-anisotropic fine metal particles is 5 to 30%.

13 . The light-shielding image-carrying substrate of claim 1 , wherein the reflected light-absorbing layer contains at least one of carbon black, and an oxide containing at least one metal element selected from the group consisting of manganese, cobalt, iron, and copper.

14 . The light-shielding image-carrying substrate of claim 1 , wherein the light-shielding image has at least one auxiliary layer.

15 . The light-shielding image-carrying substrate of claim 1 , wherein the light-shielding image is the black matrix of a display device.

16 . A transfer material, comprising a temporary support and at least two layers thereon, wherein at least one of the at least two layers is a reflected light-absorbing layer and at least one layer of the at least two layers is a light-absorbing layer containing shape-anisotropic fine metal particles.

17 . The transfer material of claim 16 , wherein at least one of the at least two layers is a resin layer.

18 . The transfer material of claim 16 , wherein the light-absorbing layer contains the shape-anisotropic fine metal particles, a binder, a monomer or oligomer, and a photopolymerization initiator or initiator system.

19 . The transfer material of claim 16 , wherein the reflected light-absorbing layer contains a light-absorbing substance, a binder, a monomer or oligomer, and a photopolymerization initiator or initiator system.

20 . The transfer material of claim 16 , further comprising a thermoplastic resin layer and/or an intermediate layer in addition to the reflected light-absorbing and light-absorbing layers.

21 . The transfer material of claim 16 for use in forming the black matrix of a display device.

22 . The transfer material of claim 16 for use in forming a light-shielding image on a light-shielding image-carrying substrate comprising a substrate and a light-shielding image formed on at least part of at least one face of the substrate, wherein the light-shielding image comprises at least two layers, and at least one of the at least two layers is a light-absorbing layer containing shape-anisotropic fine metal particles, and at least one layer of the at least two layers is a reflected light-absorbing layer.

23 . A method of forming a light-shielding image, comprising:

providing the transfer material of claim 16 and transferring the at least two layers on the temporary support onto a substrate;

patternwise exposing the at least two layers; and

developing the at least two layers patternwise exposed to remove an unexposed area.

24 . A color filter prepared by using the light-shielding image-carrying substrate of claim 1 .

25 . A color filter prepared by using the transfer material of claim 16 .

26 . A display device comprising the light-shielding image-carrying substrate of claim 1 and a color filter prepared by using the light-shielding image-carrying substrate.

27 . A display device comprising a color filter prepared by using the light-shielding image-carrying substrate of claim 1 and a transfer material having at least two layers on a temporary support, wherein at least one of the at least two layers is a reflected light-absorbing layer, and at least one layer of the at least two layers is a light-absorbing layer containing shape-anisotropic fine metal particles.