JPS57128319A - Display panel - Google Patents
Display panelInfo
- Publication number
- JPS57128319A JPS57128319A JP56012916A JP1291681A JPS57128319A JP S57128319 A JPS57128319 A JP S57128319A JP 56012916 A JP56012916 A JP 56012916A JP 1291681 A JP1291681 A JP 1291681A JP S57128319 A JPS57128319 A JP S57128319A
- Authority
- JP
- Japan
- Prior art keywords
- polarized
- main axis
- amount
- axis
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
Abstract
PURPOSE:To achieve a display panel aving greater contrast and excellent display quality, by almost making coincident with the direction of optical main axis having the largest light transmissivity of a double refraction substrate and the direction of polarized axis of a polarized plate in contact with the substrate. CONSTITUTION:A light transmitted from a polarized plate 3a is made incident to a biaxially oriented PET film 1 at an incident angle phi and is transmitted through it, and the light transmitted through a polarized plate 3b is detected at photodetector 5. The angle between the direction of one optical main axis a1-a'1 of the film 1 and the direction of the polarized axis of the plates 3a, 3b is taken as an angle phi. For example, when the incident angle theta is taken as 40 deg., and the dependency of amount of light transmission to the angle theta between the direction of polarized axes 4a, 4b and the main axis a1-a'1 is measured at the detector 5, dicontinuity of amount of light transmission is caused at the region of about + or -20 deg. by clipping optical main axia a2-a'2 and the amount of light transmission is 20-80% in comparison with the amount around the main axis a1-a'1. Thus, the optical main axis a1-a'1 has the maximum light transmissivity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56012916A JPS57128319A (en) | 1981-02-02 | 1981-02-02 | Display panel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56012916A JPS57128319A (en) | 1981-02-02 | 1981-02-02 | Display panel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57128319A true JPS57128319A (en) | 1982-08-09 |
Family
ID=11818664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56012916A Pending JPS57128319A (en) | 1981-02-02 | 1981-02-02 | Display panel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57128319A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5988719A (en) * | 1982-11-15 | 1984-05-22 | Diafoil Co Ltd | Polyester film for base material of liquid crystal panel |
JPS59195623A (en) * | 1983-04-21 | 1984-11-06 | Toray Ind Inc | Liquid crystal display cell |
JPS59195624A (en) * | 1983-04-21 | 1984-11-06 | Toray Ind Inc | Liquid crystal display cell |
JPS63239420A (en) * | 1986-11-07 | 1988-10-05 | Ricoh Co Ltd | Liquid crystal display element using plastic substrate |
JPH02130523A (en) * | 1988-11-10 | 1990-05-18 | Ricoh Co Ltd | Liquid crystal display element |
US5150237A (en) * | 1989-05-15 | 1992-09-22 | Ricoh Company, Ltd. | Liquid crystal display element |
US5175638A (en) * | 1989-09-12 | 1992-12-29 | Ricoh Company, Ltd. | ECB type liquid crystal display device having birefringent layer with equal refractive indexes in the thickness and plane directions |
US5184237A (en) * | 1990-03-27 | 1993-02-02 | Ricoh Company, Ltd. | Super-twisted nematic type liquid crystal display device |
US5250214A (en) * | 1990-04-09 | 1993-10-05 | Ricoh Company, Ltd. | Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer |
US5380459A (en) * | 1990-04-20 | 1995-01-10 | Ricoh Company, Ltd. | Liquid crystal display device with improved viewing angle dependence of color |
US5493429A (en) * | 1990-10-26 | 1996-02-20 | Ricoh Company, Ltd. | Color liquid crystal device having thickness controlling layers disposed at non-pixel portions and between adjacent color filters |
-
1981
- 1981-02-02 JP JP56012916A patent/JPS57128319A/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5988719A (en) * | 1982-11-15 | 1984-05-22 | Diafoil Co Ltd | Polyester film for base material of liquid crystal panel |
JPH0466002B2 (en) * | 1982-11-15 | 1992-10-21 | Daiafoil | |
JPS59195623A (en) * | 1983-04-21 | 1984-11-06 | Toray Ind Inc | Liquid crystal display cell |
JPS59195624A (en) * | 1983-04-21 | 1984-11-06 | Toray Ind Inc | Liquid crystal display cell |
JPS63239420A (en) * | 1986-11-07 | 1988-10-05 | Ricoh Co Ltd | Liquid crystal display element using plastic substrate |
JPH02130523A (en) * | 1988-11-10 | 1990-05-18 | Ricoh Co Ltd | Liquid crystal display element |
US5150237A (en) * | 1989-05-15 | 1992-09-22 | Ricoh Company, Ltd. | Liquid crystal display element |
US5175638A (en) * | 1989-09-12 | 1992-12-29 | Ricoh Company, Ltd. | ECB type liquid crystal display device having birefringent layer with equal refractive indexes in the thickness and plane directions |
US5184237A (en) * | 1990-03-27 | 1993-02-02 | Ricoh Company, Ltd. | Super-twisted nematic type liquid crystal display device |
US5250214A (en) * | 1990-04-09 | 1993-10-05 | Ricoh Company, Ltd. | Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer |
US5380459A (en) * | 1990-04-20 | 1995-01-10 | Ricoh Company, Ltd. | Liquid crystal display device with improved viewing angle dependence of color |
US5493429A (en) * | 1990-10-26 | 1996-02-20 | Ricoh Company, Ltd. | Color liquid crystal device having thickness controlling layers disposed at non-pixel portions and between adjacent color filters |
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