EP0927907A1
Expired / Lapsed
EP
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Liquid crystal display panel
Assignee: Citizen Watch Co Ltd
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Filing: 1998-07-17
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Granted: —
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Expires: 2018-07-17
Abstract
Abstract A liquid crystal display panel comprising a liquid crystal cell with liquid crystals sealed therein, sandwiched between two transparent substrates having an electrode on each of the inner surfaces thereof facing each other, a first polarizing film disposed on the visible side of the liquid crystal cell, a second polarizing film disposed on the opposite side of the liquid crystal cell from the visible side, and a light absorbing film disposed on the opposite side of the second polarizing film from the visible side. The first polarizing film is a reflection-type polarizing film reflecting the light linearly polarized in the direction orthogonal to the transmission axis thereof, and the second polarizing film is an absorption-type polarizing film or color polarizing film each absorbing the light linearly polarized in the direction orthogonal to the transmission axis thereof. A transflective reflector and/or a color filter may preferably be disposed between the second polarizing film and a light source.
Inventors
- 👤 Koichi Citizen Watch Co. Ltd. Technical HOSHINO
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:24
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133528; G02F1/133536; G04; G04G; G04G9/00; G04G9/0023; G04G9/0029; G04G9/0035; G02F1/133533; G02F1/133545
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
133 words
A liquid crystal display panel comprising: a liquid crystal cell with liquid crystals sealed therein, sandwiched between two
transparent substrates having a electrode on each of the inner surfaces thereof, facing
each other; a first polarizing film disposed on the visible side of the liquid crystal cell; a second polarizing film disposed on the side of the liquid crystal cell, opposite
from the visible side thereof; and a light source disposed on the side of the second polarizing film, opposite from
the liquid crystal cell; wherein the first polarizing film is a reflection-type polarizing film reflecting
the light linearly polarized in the direction orthogonal to the transmission axis thereof
while the second polarizing film is an absorption-type polarizing film absorbing the
light linearly polarized in the direction orthogonal to the transmission axis thereof.
Claim 2
Dependent Claim
24 words
A liquid crystal display panel according to Claim 1, wherein a non-reflection
layer is installed on the visible side of the first polarizing film.
Claim 3
Dependent Claim
24 words
A liquid crystal display panel according to Claim 2, wherein the non-reflection
layer is a sheet with non-reflection treatment applied on the surface thereof.
Claim 4
Dependent Claim
24 words
A liquid crystal display panel according to Claim 1, wherein a transflective
reflector is installed between the second polarizing film and the light source.
Claim 5
Dependent Claim
25 words
A liquid crystal display panel according to Claim 1, wherein an optical
diffusing layer is installed between the second polarizing film and the light source.
Claim 6
Dependent Claim
24 words
A liquid crystal display panel according to Claim 1, wherein a color filter is
installed between the second polarizing film and the light source.
Claim 7
Dependent Claim
28 words
A liquid crystal display panel according to Claim 1, wherein a transflective
reflector and a color filter are installed between the second polarizing film and the light
source.
Claim 8
Dependent Claim
154 words
A liquid crystal display panel comprising: a liquid crystal cell with liquid crystals scaled therein, sandwiched between two
transparent substrates having an electrode on each of the inner surfaces thereof, facing
each other; a first polarizing film disposed on the visible side of the liquid crystal cell; a second polarizing film disposed on the side of the liquid crystal cell, opposite
from the visible side thereof; and a light source disposed on the side of the second polarizing film, opposite from
the liquid crystal cell; wherein the first polarizing film is a reflection-type polarizing film reflecting
the light linearly polarized in the direction orthogonal to the transmission axis thereof
while the second polarizing film is a color polarizing film for transmitting all
components of light, in specific colors, and absorbing the light linearly polarized in the
direction orthogonal to the transmission axis thereof among components of light, in
colon other than the specified colors.
Claim 9
Dependent Claim
24 words
A liquid crystal display panel according to Claim 8, wherein a non-reflection
layer is installed on the visible side of the first polarizing film.
Claim 10
Dependent Claim
24 words
A liquid crystal display panel according to Claim 9, wherein the non-reflection
layer is a sheet with non-reflection treatment applied on the surface thereof.
Claim 11
Dependent Claim
24 words
A liquid crystal display panel according to Claim 8, wherein a transflective
reflector is installed between the second polarizing film and the light source.
Claim 12
Dependent Claim
25 words
A liquid crystal display panel according to Claim 8, wherein an optical
diffusing layer is installed between the second polarizing film and the light source.
Claim 13
Dependent Claim
38 words
A liquid crystal display panel according to any one of Claims 1 to 12,
wherein the first polarizing film and the second polarizing film are disposed such that
the transmission axes thereof run in parallel with each other.
Claim 14
Dependent Claim
37 words
A liquid crystal display panel according to any one of Claims 1 to 13,
wherein liquid crystals causing linearly polarized light transmitted therethrough to
undergo phase modulation or intensity modulation are scaled in the liquid crystal cell.
Claim 15
Dependent Claim
18 words
A liquid crystal display panel according to Claim 14, wherein the liquid
crystals are twisted nematic liquid crystals.
Claim 16
Dependent Claim
18 words
A liquid crystal display panel according to Claim 14, wherein the liquid
crystals are supertwisted nematic liquid crystals.
References Cited (Backward Citations)
No citation records indexed.
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