Polarizer and liquid crystal panel
AssigneeHon Hai Precision Industry Co., Ltd.
InventorGa-Lane Chen
Life of this patent
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Abstract
A polarizer (10) for a liquid crystal panel includes a first and second transparent filmss (11, 12) facing each other, and a birefringence crystal layer (13) sandwiched by the first and second transparent films. A thickness of the birefringence crystal layer is calculated according to the formula expresses as: [(k+½)×λ]÷(no−ne); where k is a natural numbers, λ is a wavelength of light passing through the birefringence crystal layer beams, nono is an ordinary refractive index of the birefringence crystal layer, and nene is an extraordinary refractive indexes of the birefringence crystal layer. Unpolarized light beams emitted by a light source are substantially all passed through the polarizer. Therefore, the polarizer can provide highly efficient utilization of light beams.
Claims10
A liquid crystal panel, comprising:
- a first polarizer and a second polarizer facing each other, each of the first and second polarizers each comprising a first and second transparent films, facing each other, and a birefringence crystal layer sandwiched by the first and second transparent films, a thickness of the birefringence crystal layer expressed asisbeing calculated according to the formula:
- [(k+½)×λ]÷(no−ne);
- wherein k is a natural numbers, λ is a wavelength of light passing through the birefringence crystal layer beams, no is an ordinary refractive index of the birefringence crystal layer, and ne is an extraordinary refractive indexes of the birefringence crystal layer;
- and
- a liquid crystal cell sandwiched between the first and second polarizers.
A polarizer comprising:
- a first transparent film and a second transparent films facing each other;
- a birefringence crystal layer sandwiched betweeny the first and second transparent films, a thickness of the birefringence crystal layer expressed asisbeing calculated according to the formula:
- [(k+½)×λ]÷(no−ne);
- wherein k is a natural numbers, λ is a wavelength of light passing through the birefringence crystal layer beams, no is an ordinary refractive index of the birefringence crystal layer, and ne is an extraordinary refractive indexes of the birefringence crystal layer.
Dependencies are inferred from the claim text.