Phase difference board, display device containing the phase difference board and method for producing the phase difference board
PROBLEM TO BE SOLVED: To provide a phase difference plate which has a number of areas different in lagging axis direction and capable of making uniform polarization conversion over a wide wavelength range.SOLUTION: The phase difference plate has a number of areas different in the lagging axis direct...
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| creator | OCHIAI KOSHIRO SASE KOKEI |
| description | PROBLEM TO BE SOLVED: To provide a phase difference plate which has a number of areas different in lagging axis direction and capable of making uniform polarization conversion over a wide wavelength range.SOLUTION: The phase difference plate has a number of areas different in the lagging axis direction, and its birefringence Δn(λ) for the light of wavelength λ(nm) satisfies Δn(450)/Δn(550)≤1.00(1) and 1.00≤Δn(650)/Δn(550)(2) in any area. It is desirable that the phase difference plate is obtained by polymerizing the chemicals containing a group and double bonded group expressed by -G-D-Ar-D- G-. Ar represents a bivalent group having an aromatic ring, and the number Nof π electrons contained in the aromatic ring is 12 or larger. Dand Drepresent each a single bond or a linking group. R- Rrepresent a hydrogen atom, a fluorine atom or an alkyl group. Gand Geach represent a bivalent alicyclic hydrocarbon group. |
| format | Patent |
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It is desirable that the phase difference plate is obtained by polymerizing the chemicals containing a group and double bonded group expressed by -G-D-Ar-D- G-. Ar represents a bivalent group having an aromatic ring, and the number Nof π electrons contained in the aromatic ring is 12 or larger. Dand Drepresent each a single bond or a linking group. R- Rrepresent a hydrogen atom, a fluorine atom or an alkyl group. 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It is desirable that the phase difference plate is obtained by polymerizing the chemicals containing a group and double bonded group expressed by -G-D-Ar-D- G-. Ar represents a bivalent group having an aromatic ring, and the number Nof π electrons contained in the aromatic ring is 12 or larger. Dand Drepresent each a single bond or a linking group. R- Rrepresent a hydrogen atom, a fluorine atom or an alkyl group. 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It is desirable that the phase difference plate is obtained by polymerizing the chemicals containing a group and double bonded group expressed by -G-D-Ar-D- G-. Ar represents a bivalent group having an aromatic ring, and the number Nof π electrons contained in the aromatic ring is 12 or larger. Dand Drepresent each a single bond or a linking group. R- Rrepresent a hydrogen atom, a fluorine atom or an alkyl group. Gand Geach represent a bivalent alicyclic hydrocarbon group.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF |
| title | Phase difference board, display device containing the phase difference board and method for producing the phase difference board |
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