Optical laminate for front surface of in-cell touch panel liquid crystal element and in-cell touch panel liquid crystal display device using same
First Claim
1. An optical laminate for a front surface of an in-cell touch panel liquid crystal element, comprising:
- a phase difference plate;
a polarizing film;
a transparent substrate in this order; and
a conductive layer,wherein the transparent substrate has optical anisotropy that scatters linear polarized light emitted from the polarizing film, the phase difference plate, the polarizing film, and the transparent substrate are laminated without other layers or only through the conductive layer, and a thickness of the optical laminate is in a range of 32 μ
m to 300 μ
m,wherein the conductive layer has a bilayer structure of a first conductive layer and a second conductive layer, andwherein the first conductive layer comprises a thermoplastic resin.
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Abstract
An optical laminate for a front surface of an in-cell touch panel liquid crystal element has reduced thickness while avoiding cloudiness of the liquid crystal screen. The optical laminate for a front surface of an in-cell touch panel liquid crystal element comprises a phase difference plate, a polarizing film, and a transparent substrate in this order, and further comprises a conductive layer. The transparent substrate has optical anisotropy that scatters linear polarized light emitted from the polarizing film, the phase difference plate, the polarizing film, and the transparent substrate are laminated without other layers or only through the conductive layer, and a thickness of the optical laminate is in a range of 32 μm to 300 μm.
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Citations
20 Claims
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1. An optical laminate for a front surface of an in-cell touch panel liquid crystal element, comprising:
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a phase difference plate; a polarizing film; a transparent substrate in this order; and a conductive layer, wherein the transparent substrate has optical anisotropy that scatters linear polarized light emitted from the polarizing film, the phase difference plate, the polarizing film, and the transparent substrate are laminated without other layers or only through the conductive layer, and a thickness of the optical laminate is in a range of 32 μ
m to 300 μ
m,wherein the conductive layer has a bilayer structure of a first conductive layer and a second conductive layer, and wherein the first conductive layer comprises a thermoplastic resin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16)
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13. An in-cell touch panel liquid crystal display device, comprising:
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an in-cell touch panel liquid crystal element; and an optical laminate for a front surface of the in-cell touch panel liquid crystal element, comprising; a phase difference plate; a polarizing film; a transparent substrate in this order; and a conductive layer, wherein the transparent substrate has optical anisotropy that scatters linear polarized light emitted from the polarizing film, the phase difference plate, the polarizing film, and the transparent substrate are laminated without other layers or only through the conductive layer, and a thickness of the optical laminate is in a range of 32 μ
m to 300 μ
m,wherein the conductive layer is located on a surface of the phase difference plate on a polarizing film side, a surface of the phase difference plate on an opposite side to the polarizing film side, or a surface of the transparent substrate on a polarizing film side, wherein the conductive layer has a bilayer structure of a first conductive layer and a second conductive layer, and wherein a surface of the optical laminate, which is opposite the transparent substrate relative to the polarizing film, is attached to the in-cell touch panel liquid crystal element. - View Dependent Claims (14, 17, 18, 19, 20)
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Specification