Method of making a phase difference film
AssigneeFar Eastern New Century Corporation
InventorsDa-Ren Chiou, Wei-Che Hung, Yu-June Wu
Life of this patent
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Abstract
A method of making a phase difference film includes: (a) providing a substrate having a first surface provided with a light-shielding layer and a second surface provided with an orientable layer; (b) providing a first linear polarized UV light to irradiate the orientable layer and providing a second linear polarized UV light to irradiate the orientable layer so as to form the orientable layer into an alignment layer having first and second regions that are photo-oriented in two different orientation directions, respectively; and (c) coating a liquid crystal material on the alignment layer and curing the liquid crystal material.
Claims18
A method of making a phase difference film, comprising:
- (a) providing a first light-transmissible substrate having opposite first and second surfaces, the first surface being formed with a patterned light-shielding layer thereon, the second surface being formed with an orientable layer of a photo-orientable material thereon;
- (b) providing a first linear polarized UV light that is directed from one side of the first light-transmissible substrate, at which the patterned light-shielding layer is disposed, through the first light-transmissible substrate to an opposite side of the first light-transmissible substrate, at which the orientable layer is disposed, to irradiate the orientable layer and providing a second linear polarized UV light that is directed from said opposite side of the first light-transmissible substrate to said one side of the first light-transmissible substrate to irradiate the orientable layer so as to form the orientable layer into an alignment layer having first and second regions that are photo-oriented in two different orientation directions, respectively;
- and
- (c) coating a liquid crystal material on the alignment layer and curing the liquid crystal material so as to form the liquid crystal material into a phase difference film having first and second regions that are aligned in the first and second orientation directions, respectively,
- wherein the irradiation of the orientable layer with the first linear polarized UV light in step (b) is conducted before the irradiation of the orientable layer with the second linear polarized UV light and the irradiation dosage of the first linear polarized UV light in step (b) is higher than that of the second linear polarized UV light.
A method of making a phase difference film, comprising:
- (a) providing a first light-transmissible substrate having opposite first and second surfaces, the first surface being formed with a patterned light-shielding layer thereon, the second surface being formed with an orientable layer of a photo-orientable material thereon;
- (b) providing a first linear polarized UV light that is directed from one side of the first light-transmissible substrate, at which the patterned light-shielding layer is disposed, through the first light-transmissible substrate to an opposite side of the first light-transmissible substrate, at which the orientable layer is disposed, to irradiate the orientable layer and providing a second linear polarized UV light that is directed from said opposite side of the first light-transmissible substrate to said one side of the first light-transmissible substrate to irradiate the orientable layer so as to form the orientable layer into an alignment layer having first and second regions that are photo-oriented in two different orientation directions, respectively;
- and
- (c) coating a liquid crystal material on the alignment layer and curing the liquid crystal material so as to form the liquid crystal material into a phase difference firm having first and second regions that are aligned in the first and second orientation directions, respectively, wherein the irradiation of the orientable layer with the second linear polarized UV light in step (b) is conducted before the irradiation of the orientable layer with the first linear polarized UV light and the irradiation dosage of the first linear polarized UV light in step (b) is not smaller than that of the second linear polarized UV light.
Dependencies are inferred from the claim text.