JPH01145635A - Production of liquid crystal display body - Google Patents
Production of liquid crystal display bodyInfo
- Publication number
- JPH01145635A JPH01145635A JP30421987A JP30421987A JPH01145635A JP H01145635 A JPH01145635 A JP H01145635A JP 30421987 A JP30421987 A JP 30421987A JP 30421987 A JP30421987 A JP 30421987A JP H01145635 A JPH01145635 A JP H01145635A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- microcapsules
- display
- liquid
- curable material
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000005684 electric field Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000002775 capsule Substances 0.000 claims 1
- 239000003094 microcapsule Substances 0.000 abstract description 29
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000007791 liquid phase Substances 0.000 abstract description 5
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000501754 Astronotus ocellatus Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- SYFOAKAXGNMQAX-UHFFFAOYSA-N bis(prop-2-enyl) carbonate;2-(2-hydroxyethoxy)ethanol Chemical compound OCCOCCO.C=CCOC(=O)OCC=C SYFOAKAXGNMQAX-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
- C09K19/542—Macromolecular compounds
- C09K19/544—Macromolecular compounds as dispersing or encapsulating medium around the liquid crystal
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は物質の電気光学効果を利用して構成した透過型
、反射型の表示体の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a transmissive type or reflective type display body constructed by utilizing the electro-optic effect of a substance.
従来から電気光学効果を利用した表示体として液晶表示
体が知られており、産業上の利用価値も高く、デイスプ
レィ、光シヤツターなどに幅広く使用されている。BACKGROUND ART Liquid crystal displays have long been known as display bodies that utilize electro-optic effects, have high industrial value, and are widely used in displays, optical shutters, and the like.
従来の液晶表示体の基本構成は、電極を存する基板を相
対させて、スペーサーで保持し、いわゆる液晶セルを形
成していた。また、液晶を封入したマイクロカプセルを
塗料等に混入し、塗膜の状態で表示体として利用するこ
となどが行なわれている。The basic structure of a conventional liquid crystal display is to form a so-called liquid crystal cell by holding substrates with electrodes facing each other with spacers. Furthermore, microcapsules encapsulating liquid crystals are mixed into paints, etc., and used as a display body in the form of a coating film.
液晶の封入されたマイクロカプセルを用いた温合、曲率
を持った面に表示部を形成できるという利点があったが
、非作動時に白濁していた。これは、非作動時に液晶の
配向が制御できていない為であった。反射型の場合、ま
だ利用価値があるが、透過で光量を調節しようとした場
合、白濁してしまうのでは問題である。It had the advantage of being able to form a display section on a surface with heating and curvature using microcapsules filled with liquid crystal, but it became cloudy when not in operation. This was because the alignment of the liquid crystal could not be controlled when it was not in operation. In the case of a reflective type, it is still useful, but if you try to adjust the amount of light by transmitting it, it becomes cloudy, which is a problem.
本発明は上記に示した欠点を克服するもので、曲面上に
表示部が形成でき、かつ、非作動時に白濁することなく
一定の透過率を保てる様な液晶表示体の製造方法を提供
することを目的とする。The present invention overcomes the above-mentioned drawbacks, and provides a method for manufacturing a liquid crystal display that allows a display portion to be formed on a curved surface and maintains a constant transmittance without becoming cloudy when not in operation. With the goal.
本発明は、電圧印加により駆動する液晶表示体において
、相対する電極間に存在する表示部を、液晶または二色
性染料を添加した液晶を必須成分として含む材料を封入
したマイクロカプセルを硬化性物質に分散させ、電場お
よび／または磁場を印加しながら硬化性物質を硬化して
形成することを特徴とする。In a liquid crystal display that is driven by voltage application, the display part existing between opposing electrodes is formed using microcapsules encapsulating a material containing liquid crystal or a liquid crystal added with a dichroic dye as an essential component. It is characterized in that it is formed by dispersing the curable material into a curable material and curing it while applying an electric field and/or a magnetic field.
本発明ではまずマイクロカプセルを、熱硬化性、あるい
は、光硬化性などの硬化性物質の中に分散させる。この
場合、マイクロカプセルが液状の硬化性物質中で自由に
回転できることが必要で、液相の粘度等を考慮しマイク
ロカプセルの粒径を選択することが必要である。In the present invention, microcapsules are first dispersed in a curable substance such as thermosetting or photocurable material. In this case, it is necessary that the microcapsules can freely rotate in the liquid curable substance, and it is necessary to select the particle size of the microcapsules in consideration of the viscosity of the liquid phase, etc.
このようにしてマイクロカプセルを分散させたψ液を、
予め、透明電極を形成した基板へ塗布する。塗布の方法
はデイツプ法、スピンナー法などを用いることができる
。The ψ liquid in which microcapsules are dispersed in this way is
It is applied to a substrate on which a transparent electrode has been formed in advance. As a coating method, dip method, spinner method, etc. can be used.
本発明では、上記硬化性物質が硬化を終了するまでの間
塗膜に電場および／または磁場を印加する。電場および
磁場の強度は液晶の配向がマイクロカプセル内で変わら
ない程度で、マイクロカプセルが回転を起こす程度がよ
い。In the present invention, an electric field and/or a magnetic field is applied to the coating film until the curable substance finishes curing. The strength of the electric field and magnetic field is preferably such that the orientation of the liquid crystal does not change within the microcapsules, and the strength of the microcapsules is such that the microcapsules rotate.
硬化後、塗膜上に透明電極を形成し、表示体として使用
することができる。After curing, a transparent electrode can be formed on the coating film and used as a display.
また、表示部をある一方向に電場および／または磁場を
印加して形成した後、２層目の表示部を別方向に電場お
よび／または磁場を印加して形成することにより、配向
方向の異なる２層を持つ表示体の形成、さらには多層構
造も容易に実現できる。In addition, by forming the display part by applying an electric field and/or magnetic field in one direction, and then forming the second layer display part by applying an electric field and/or magnetic field in another direction, it is possible to form a display part with different orientation directions. Formation of a display body having two layers, and furthermore, a multilayer structure can be easily realized.
マイクロカプセル中の液晶は通常第１図に示す様にマイ
クロカプセル内で配向しており、マイクロカプセル１つ
でみた場合１つのダイポールモーメントとして見る事が
できる。液相中では第２図に示す様にマイクロカプセル
としてのダイポールモーメント（図では実線矢印で示し
である）は無秩序になっている。次に液相状態で基板に
平行に電場および／または磁場を印加した場合、第３図
に示す様に、印加方向へダイポールは配向する。The liquid crystal in a microcapsule is usually oriented within the microcapsule as shown in FIG. 1, and when viewed from one microcapsule, it can be seen as one dipole moment. In the liquid phase, as shown in FIG. 2, the dipole moments (indicated by solid arrows in the figure) as microcapsules are disordered. Next, when an electric field and/or a magnetic field is applied parallel to the substrate in a liquid phase state, the dipoles are oriented in the direction of application, as shown in FIG.
この状態で媒質である誘電体を硬化させればマイクロカ
プセルは、熱擾乱を受けずにある一定方向へ配向したま
まとなる。If the dielectric medium is cured in this state, the microcapsules remain oriented in a certain direction without being subjected to thermal disturbance.
以下、本発明の電子サングラスについて実施例を挙げて
説明するが、本発明はこれらに限るものではない。Hereinafter, the electronic sunglasses of the present invention will be described with reference to Examples, but the present invention is not limited to these.
ゲストホスト型液晶としてメルク社製ＺＬＩ−３２００
，２０ｗｔ％、ＺＬＩ−２８０６，８０％のミクスチャ
ーを使用し、コンブレックス・コアセルベーションを利
用して、液晶をマイクロカプセル化した。マイクロカプ
セルの粒径は１０μ程度であった。Merck ZLI-3200 as a guest-host type liquid crystal
, 20 wt% and ZLI-2806, 80%, and the liquid crystal was microencapsulated using complex coacervation. The particle size of the microcapsules was about 10μ.
撹拌装置を備えた反応容器中にエタノール２０６ｇ、エ
タノール分散コロイダルシリカ３９６ｇ（触媒化成工業
株式会社製“オスカル１２３２”固形分３０％）、γ−
グリシドキシプロピルトリメトキシシランの部分加水分
解物３１２ ｇ ｓフローコントロール斉１０．２ｇ（
日本ユニカー（株）製”Ｌ−７６０４”）及び０．０５
Ｎ酢酸水溶１８６ｇを加え、さらにマイクロカプセル化
した液晶を１００ｇ加えて、室温で２時間撹拌を行なっ
た。In a reaction vessel equipped with a stirring device, 206 g of ethanol, 396 g of ethanol-dispersed colloidal silica (“Oscar 1232” manufactured by Catalysts & Chemicals Co., Ltd. solid content 30%), γ-
Partial hydrolyzate of glycidoxypropyltrimethoxysilane 312 g s Flow control sample 10.2 g (
“L-7604” manufactured by Nippon Unicar Co., Ltd.) and 0.05
186 g of N acetic acid aqueous solution was added, and further 100 g of microencapsulated liquid crystal was added, followed by stirring at room temperature for 2 hours.
上記に示した液をコート液とし、コート液の粘度が８０
ｃｐｓになるまで予備縮合させた。The liquid shown above is used as a coating liquid, and the viscosity of the coating liquid is 80.
It was precondensed until it became cps.
予めＩＴＯ膜と引き出し電極を取り付けたジエチレング
リコールビスアリルカーボネート樹脂基板上に上記で用
意したコート液をデイツプ法により塗布した。塗布時の
コートＩＩ２膜厚は５０μｍであった。次に熱風乾燥炉
中で基板と平行方向に直流電場２０ ＫＶ／ ｃ ｍを
印加しなから８０＠Ｃ３０分間、１３０′Ｃで２時間加
熱硬化させた。その後、硬化したコート膜上に透明電極
としてＩＴＯ膜をスパッタリング法で形成し、引き出し
電極を取り付けてサンプルとした。The coating solution prepared above was applied by dip method onto a diethylene glycol bisallyl carbonate resin substrate to which an ITO film and extraction electrodes had been attached in advance. The coat II2 film thickness at the time of application was 50 μm. Next, in a hot air drying oven, a direct current electric field of 20 KV/cm was applied in a direction parallel to the substrate, and the film was cured by heating at 80°C for 30 minutes and at 130'C for 2 hours. Thereafter, an ITO film was formed as a transparent electrode on the cured coat film by sputtering, and an extraction electrode was attached to prepare a sample.
サンプルを＋３０Ｈｚ ＩＯＶのスタティック駆動で
作動させたところ、透過率が電圧ＯＦＦ時で４２％、Ｏ
Ｎ時で９．５％となった。When the sample was operated with +30Hz IOV static drive, the transmittance was 42% when the voltage was OFF, and the O
At N time, it was 9.5%.
マイクロカプセル１つに注目した場合、１つのダイポー
ルモーメントとしてみることができるが、電場および／
または磁場を印加しながら硬化性物質を硬化させたこと
により、１つ１つのマイクロカプセルのダイポールモー
メントがある一方゛向で固定されることとなり、たとえ
ば電圧作動の、表示体などで必要であった配向制御が可
能となった。マイクロカプセル化液晶の配向制御が可能
となったことにより、通常のセル型と同様に使用でき、
かつ、曲面への表示も可能となった。When focusing on one microcapsule, it can be seen as one dipole moment, but the electric field and/or
Alternatively, by curing the curable substance while applying a magnetic field, the dipole moment of each microcapsule is fixed in one direction, which is necessary for voltage-operated displays, etc. Orientation control is now possible. By making it possible to control the orientation of microencapsulated liquid crystal, it can be used in the same way as a normal cell type.
Additionally, it has become possible to display on curved surfaces.
応用分野としては、通常の表示パネル、光シャッター等
今までセル方式によって応用された分野はもちろん、光
学レンズ表面など曲面に形成可能なことから、電子サン
グラスなど全く新しい応用の道が間ける。Application fields include ordinary display panels, optical shutters, and other fields where the cell method has been used up until now, but since it can be formed into curved surfaces such as the surface of optical lenses, it opens up completely new applications such as electronic sunglasses.
第１図は本発明による液晶を封入したマイクロカプセル
の断面図。
第２図は電圧を印加する前のマイクロカプセルとしての
ダイポールモーメントの様子を示した図。
第３図には電圧を印加した時のマイクロカプセルとして
のダイポールモーメントの様子を示した図。
１・・・マイクロカプセルの殻
２・・・液晶分子
３・・・液晶の封入されたマイクロカプセル４・・・透
明電極
５・・・基板
を示した。
以 上
出願人 セイコーエプソン株式会社
代理人 弁理士 最 上 彷、−１他１名＼FIG. 1 is a cross-sectional view of a microcapsule encapsulating a liquid crystal according to the present invention. FIG. 2 is a diagram showing the state of the dipole moment as a microcapsule before voltage is applied. FIG. 3 is a diagram showing the dipole moment as a microcapsule when a voltage is applied. 1... Shell of microcapsule 2... Liquid crystal molecule 3... Microcapsule 4 in which liquid crystal is encapsulated... Transparent electrode 5... Substrate is shown. Applicant Seiko Epson Co., Ltd. Agent Patent Attorney Aki Mogami, -1 and 1 other person
Claims (1)
、相対する電極間に存在する表示部を、液晶または二色
性染料を添加した液晶を必須成分として含む材料を封入
したマイクロカプセルを硬化性物質に分散させ、電場お
よび／または磁場を印加しながら硬化性物質を硬化して
形成することを特徴とする液晶表示体 の製造方法。[Claims] In a method for manufacturing a liquid crystal display driven by voltage application, a display section existing between opposing electrodes is formed using a micro-chip encapsulating a liquid crystal or a material containing as an essential component a liquid crystal added with a dichroic dye. A method for manufacturing a liquid crystal display, which comprises dispersing capsules in a curable substance and curing the curable substance while applying an electric field and/or a magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30421987A JPH01145635A (en) | 1987-12-01 | 1987-12-01 | Production of liquid crystal display body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30421987A JPH01145635A (en) | 1987-12-01 | 1987-12-01 | Production of liquid crystal display body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01145635A true JPH01145635A (en) | 1989-06-07 |
Family
ID=17930441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30421987A Pending JPH01145635A (en) | 1987-12-01 | 1987-12-01 | Production of liquid crystal display body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01145635A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519237A (en) * | 1991-02-04 | 1993-01-29 | Semiconductor Energy Lab Co Ltd | Production of liquid crystal electrooptical device |
| JPH05173113A (en) * | 1991-02-12 | 1993-07-13 | Semiconductor Energy Lab Co Ltd | Liquid crystal electro-optical device |
| EP0665279A1 (en) * | 1994-02-01 | 1995-08-02 | Kent State University | Polymer dispersed ferroelectric smectic liquid crystal |
| US5473450A (en) * | 1992-04-28 | 1995-12-05 | Sharp Kabushiki Kaisha | Liquid crystal display device with a polymer between liquid crystal regions |
| US5504600A (en) * | 1992-01-10 | 1996-04-02 | Kent State University | Method of making a ferroelectric liquid crystal cell including a cooling step |
| US5530566A (en) * | 1992-09-24 | 1996-06-25 | Kent State University | Polymer dispersed ferroelectric smectic liquid crystal formed by inducing a force during phase separation |
| US5570210A (en) * | 1993-05-06 | 1996-10-29 | Fujitsu Limited | Liquid crystal display device with directional backlight and image production capability in the light scattering mode |
| US5724110A (en) * | 1994-05-27 | 1998-03-03 | Sharp Kabushiki Kaisha | Liquid crystal panel and method for producing the same in which the seal section is formed from a mixture of liquid crystal and resin |
| JP2001228466A (en) * | 2000-01-06 | 2001-08-24 | Eastman Kodak Co | Display sheet having memory using combination restricting domain |
-
1987
- 1987-12-01 JP JP30421987A patent/JPH01145635A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0519237A (en) * | 1991-02-04 | 1993-01-29 | Semiconductor Energy Lab Co Ltd | Production of liquid crystal electrooptical device |
| JPH05173113A (en) * | 1991-02-12 | 1993-07-13 | Semiconductor Energy Lab Co Ltd | Liquid crystal electro-optical device |
| US5504600A (en) * | 1992-01-10 | 1996-04-02 | Kent State University | Method of making a ferroelectric liquid crystal cell including a cooling step |
| US5473450A (en) * | 1992-04-28 | 1995-12-05 | Sharp Kabushiki Kaisha | Liquid crystal display device with a polymer between liquid crystal regions |
| US5530566A (en) * | 1992-09-24 | 1996-06-25 | Kent State University | Polymer dispersed ferroelectric smectic liquid crystal formed by inducing a force during phase separation |
| US5570210A (en) * | 1993-05-06 | 1996-10-29 | Fujitsu Limited | Liquid crystal display device with directional backlight and image production capability in the light scattering mode |
| EP0665279A1 (en) * | 1994-02-01 | 1995-08-02 | Kent State University | Polymer dispersed ferroelectric smectic liquid crystal |
| US5724110A (en) * | 1994-05-27 | 1998-03-03 | Sharp Kabushiki Kaisha | Liquid crystal panel and method for producing the same in which the seal section is formed from a mixture of liquid crystal and resin |
| JP2001228466A (en) * | 2000-01-06 | 2001-08-24 | Eastman Kodak Co | Display sheet having memory using combination restricting domain |
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