External Light Blocking Film For Display Device, Filter For Display Device Having The Same, And Method Of Fabricating The Same
A method of fabricating an external light blocking film for a display device is provided. The method includes a step of applying a curable resin in which a photochromic colorant is mixed on a backing of a transparent resin; a step of disposing a photo-mask having a predetermined pattern on the curable resin and then irradiating the photochromic colorant through the photo-mask with light having a first wavelength which makes the photochromic colorant color-changed; a step of removing the photo-mask and then curing the curable resin. The method can improve fabrication efficiency.
1 . An external light blocking film for a display device comprising: a resin layer and a color-changing colorant mixed in the resin layer,
wherein the color-changing colorant is color-changed in a predetermined pattern to form an external light blocking pattern.
2 . The external light blocking film of claim 1 ,
wherein the color-changing colorant is a photochromic colorant.
3 . The external light blocking film of claim 2 ,
wherein the photochromic colorant is irradiated with light such that color of the photochromic colorant is irreversibly changed into black.
4 . The external light blocking film of claim 2 ,
wherein light making the photochromic colorant color-changed is ultraviolet rays.
5 . The external light blocking film of claim 2 ,
wherein the photochromic colorant is a diazo type colorant.
6 . The external light blocking film of claim 1 further comprising a backing,
wherein the resin layer includes a curable resin, and is formed on the backing.
7 . The external light blocking film of claim 6 ,
wherein the curable resin is a light curable resin.
8 . The external light blocking film of claim 7 ,
wherein the color-changing colorant is a photochromic colorant,
the photochromic colorant is color-changed by light having a first wavelength, and
the light curable resin is cured by light having a second wavelength different from the first wavelength.
9 . A filter for a display device comprising an external light blocking film,
wherein the external light blocking film includes a resin layer and a color-changing colorant mixed in the resin layer, and the color-changing colorant is color-changed in a predetermined pattern to form an external light blocking pattern.
10 . A method of fabricating an external light blocking film for a display device comprising:
a first step of forming a resin layer in which a color-changing colorant is mixed, and
a second step of color-changing the color-changing colorant in a predetermined pattern to form an external light blocking pattern.
11 . The method of claim 10 ,
wherein in the second step, a mask having the predetermined pattern is disposed over the resin layer and then the color-changing colorant is color-changed in such a manner that the predetermined pattern of the mask is transferred to the color-changing colorant.
12 . The method of claim 10 ,
wherein the color-changing colorant is a photochromic colorant, and
in the second step, the photochromic colorant is irradiated with light making the photochromic colorant color-changed in the predetermined pattern.
13 . The method of claim 12 ,
wherein the photochromic colorant is irradiated with the light such that color of the photochromic colorant is irreversibly changed into black.
14 . The method of claim 12 ,
wherein in the first step, the resin layer in which a photoinitiator as well as the color-changing colorant is mixed is formed.
15 . The method of claim 12 ,
wherein the light making the photochromic colorant color-changed is ultraviolet rays.
16 . The method of claim 12 ,
wherein the photochromic colorant is a diazo type colorant.
17 . The method of claim 10 ,
wherein the resin layer includes a curable resin and the external light blocking film includes a backing,
in the first step, the curable resin in which the color-changing colorant is mixed is applied on the backing, and
the second step is followed by a third step of curing the curable resin.
18 . The method of claim 17 ,
wherein the curable resin is a light curable resin.
19 . The method of claim 10 ,
wherein the resin layer includes a curable resin and the external light blocking film includes a backing,
in the first step, the curable resin in which a photochromic colorant is mixed is applied on the backing,
in the second step, a photo-mask having the predetermined pattern is disposed over the curable resin, and then the photochromic colorant is irradiated through the photo-mask with light having a first wavelength which makes the photochromic colorant color-changed, and
the second step is followed by a third step of removing the photo-mask and then curing the curable resin.
20 . The method of claim 19 ,
wherein the curable resin is a light curable resin and is cured by light having a second wavelength different from the first wavelength.