JPS62229222A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS62229222A JPS62229222A JP61073248A JP7324886A JPS62229222A JP S62229222 A JPS62229222 A JP S62229222A JP 61073248 A JP61073248 A JP 61073248A JP 7324886 A JP7324886 A JP 7324886A JP S62229222 A JPS62229222 A JP S62229222A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display device
- polarizing plate
- glass substrate
- 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 38
- 239000011521 glass Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 238000005530 etching Methods 0.000 claims abstract description 4
- 238000001771 vacuum deposition Methods 0.000 claims abstract description 3
- 238000004544 sputter deposition Methods 0.000 claims description 4
- 239000004988 Nematic liquid crystal Substances 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は液晶表示装置に係り、特にパーソナルコンピュ
ータやワードプロセッサ等に用いられる大型液晶表示装
置の具現化に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid crystal display device, and particularly to the implementation of a large-sized liquid crystal display device used in personal computers, word processors, and the like.
（発明の概要）
本発明は、パーソナルコンピュータやワードブロセッ１
す、ハンドベルトコンピュータ等の情報出力端末として
使用される大型液晶表示装置において、液晶表示装置の
ガラスの上面或は上偏光板の上面に、少なくとも上面が
エツチング或は真空蒸着、スパッタ等により反射防止処
理が施されたガラス基板を紫外線硬化型接着剤を用いて
貼り合わせる事によって、はぼ完全に表面反射にＪ：る
視認性の低下を防ぐ事が出来、合わせて、偏光板の保護
或は液晶表示装置の堅牢性を増大させる事を目的とした
ものである。(Summary of the invention) The present invention provides a
In large liquid crystal display devices used as information output terminals such as hand belt computers, at least the top surface of the glass of the liquid crystal display device or the top surface of the upper polarizing plate is anti-reflective by etching, vacuum deposition, sputtering, etc. By bonding treated glass substrates together using an ultraviolet curable adhesive, it is possible to almost completely prevent a decrease in visibility due to surface reflection, and also to protect the polarizing plate. The purpose is to increase the robustness of liquid crystal display devices.
（従来の技術）
液晶表示装置が大容量化、大面積化されて、パーソナル
コンピュータ、或はワードプロセッサ、ハンドベルトコ
ンピュータ等の表示端末として利用されてくるようにな
ると、ガラス表面或は偏光板表面からの光反射による視
認性の低下が大ぎな問題となってきた。最近では偏光板
の上側表面にＳｉＯのコーティングを行なったり、機械
的に表面を荒らす事により、表面反射光を低く押え込む
方法が考案されている。(Prior Art) As liquid crystal display devices become larger in capacity and area and are used as display terminals for personal computers, word processors, hand belt computers, etc., Reduced visibility due to light reflection has become a serious problem. Recently, methods have been devised to suppress surface reflected light by coating the upper surface of a polarizing plate with SiO or mechanically roughening the surface.
（発明が解決しようとする問題点）
偏光板表面に反射処理を行った場合で６、一般的には偏
光板の耐久性や液晶表示装置そのものの強度上の問題か
ら、偏光板がむき出しのままで各種機器用の表示端末と
して使用される事は稀であり、通常は透明アクリル板や
ガラス等で表示装置の表面を覆ってしまう為、アクリル
板或はガラスの表面に反射防止の処理を施したものを使
用しなければ、偏光板表面の反射防止処理は殆んど何の
意味も為さない。アクリル板或はガラス板の表面を荒ら
す方法で反射防止処理を施したものを用いた場合には、
丁度曇りガラスを合わせた様になり、極めて見にくいも
のになってしまう。仮に蒸着やスパッタ等で干渉膜を形
成しても、裏面反射は必ず発生するし、偏光板とアクリ
ル或はガラス板の両方共反射防止処理を施さねばならず
、コスト的にも大変不利な方法である。(Problems to be Solved by the Invention) When reflective treatment is applied to the surface of a polarizing plate6, generally the polarizing plate is left exposed due to problems with the durability of the polarizing plate and the strength of the liquid crystal display device itself. It is rarely used as a display terminal for various devices, and the surface of the display device is usually covered with a transparent acrylic plate or glass, so anti-reflection treatment is applied to the surface of the acrylic plate or glass. If the antireflection treatment is not used, the antireflection treatment on the surface of the polarizing plate will have almost no meaning. When using an acrylic plate or glass plate that has been treated with anti-reflection treatment by roughening the surface,
It looks just like a piece of fogged glass, making it extremely difficult to see. Even if an interference film is formed by vapor deposition or sputtering, backside reflection will always occur, and both the polarizing plate and the acrylic or glass plate must be subjected to anti-reflection treatment, which is a very disadvantageous method in terms of cost. It is.
（問題点を解決する為の手段）
上記問題を解決する為に、本発明では液晶表示装置の上
側ガラス基板の上面、或は上側偏光板上面にエツチング
或は真空蒸着法やスパッタにより反射防止処理を施した
ガラスを紫外線硬化型接着剤を用いて、液晶及び偏光板
を変成さけることなく貼り合せることによって、液晶表
示装置内に空気層が存在しないことから、表面反射及び
内部の裏面反射を著しく低減させることが可能であり、
合わせて液晶表示装置の堅牢性、信頼性を高めることが
可能になる。(Means for solving the problem) In order to solve the above problem, in the present invention, the upper surface of the upper glass substrate of the liquid crystal display device or the upper surface of the upper polarizing plate is subjected to antireflection treatment by etching, vacuum evaporation, or sputtering. By bonding the liquid crystal and polarizing plate to the glass treated with ultraviolet rays using an ultraviolet curable adhesive, there is no air layer inside the liquid crystal display device, so surface reflections and internal back reflections are significantly reduced. It is possible to reduce
At the same time, it becomes possible to improve the robustness and reliability of the liquid crystal display device.
（実施例） 次に図面を用いて本発明の実施例を詳細に説明する。(Example) Next, embodiments of the present invention will be described in detail using the drawings.
第１図は本発明に用いた９０°ねじれネマティック液晶
表示装置の断面図である。図中１は、上面を反射防止処
理をした透明ガラス基板、２は紫外線硬化型接着剤、３
．７は偏光板、４．６は液晶パネルの透明ガラスｌｌｉ
、５はネマティック液晶である。FIG. 1 is a sectional view of a 90° twisted nematic liquid crystal display device used in the present invention. In the figure, 1 is a transparent glass substrate with anti-reflection treatment on the top surface, 2 is an ultraviolet curing adhesive, and 3 is
．． 7 is a polarizing plate, 4.6 is the transparent glass of the liquid crystal panel
, 5 is a nematic liquid crystal.
第２図は、本発明を用いた液晶表示装置の製造方法を示
したものである。上面をケミカルエツチングされて散乱
面となった厚さ１．１＃１Ｉ１１のガラス基板９と、厚
さ１．１１Ｍの一対のガラス基板で挟持された９０”ね
じれネマティック液晶表示装置の上偏光板１１との間に
紫外線硬化型接着剤１２を気泡が浸入しないように封入
する。封入の方法としては、液晶を封入するのと同様に
スペーサー材１３を間挟に配置し封入口をあ【ノで周辺
をシールし真空脱気した状態で接着剤を封入口につけて
封入する方法、あるいはスベー号−材１３を間挟に配置
し接着剤をつけても毛細管現象により封入り゛る方法な
どがある。こうした方法により封入するため、接着剤は
、１０から３０ＣＩ）Ｓの粘度を有するように溶剤でう
すめられている必要がある。FIG. 2 shows a method for manufacturing a liquid crystal display device using the present invention. A glass substrate 9 with a thickness of 1.1#1I11 whose upper surface has been chemically etched to become a scattering surface, and an upper polarizing plate 11 of a 90" twisted nematic liquid crystal display device sandwiched between a pair of glass substrates with a thickness of 1.11M. An ultraviolet curable adhesive 12 is sealed in between the two to prevent air bubbles from entering.The method of sealing is to place a spacer material 13 in between and open the sealing opening in the same manner as when sealing liquid crystal. There is a method of sealing the periphery and vacuum deaerating it, and then applying adhesive to the charging port, or a method of placing Sube-No. 13 in between and applying adhesive, but still encapsulating it due to capillary action. For encapsulation by this method, the adhesive must be diluted with a solvent to have a viscosity of 10 to 30 CI)S.
さて、このようにして接着剤を封入したのち、紫外線を
放射して硬化させる。放射する紫外線は３６０ｎｍ近辺
の波長を有し、放射時間は１分から３分間が適当である
。紫外ｔｆＡ使化型化型接着剤いているため、液晶及び
偏光板に損傷を与えることなく製造することができる。After the adhesive is sealed in this way, it is cured by irradiating ultraviolet light. The emitted ultraviolet rays have a wavelength of around 360 nm, and the appropriate emission time is 1 minute to 3 minutes. Since it uses an ultraviolet TFA adhesive, it can be manufactured without damaging the liquid crystal or polarizing plate.
前述の条件で作成した液晶表示装置を、４０℃、９５％
の高温高湿条件下に１０００時間、８０℃の高温条件下
に１０００時間放置し、外観上の変化を調べたが、発泡
、剥離等の問題は全く発生せず、十分信頼性も高い事が
確認されている。The liquid crystal display device made under the above conditions was heated to 40°C and 95%
The product was left for 1,000 hours under high temperature and high humidity conditions, and for 1,000 hours under high temperature conditions of 80 degrees Celsius, and changes in appearance were investigated. No problems such as foaming or peeling occurred, and the reliability was sufficiently high. Confirmed.
また本発明を、正の誘電異方性を右するネマティック液
晶組成物が、対向配置された上下一対の透明電轡基板に
挟持され、その厚さ方向に１８０°〜２７０°の範囲で
ねじれたら旋構造を形成し、液晶層の厚みｄ （趨）と
、ねじれら旋構造のピッチＰ（趨）との比ｄ／Ｐが０．
５＜ｄ／Ｐ＜１゜０の範囲内になるように所定量の旋光
物′αを含有しており、且つこのら旋構造を挟ｌυで設
けられた一対の偏光板の透過軸、或は吸収軸が液晶配向
膜の界面近傍の液晶分子配列方向に対して、それぞれ４
５°±３０°、或は１３５°±３０°の角度で配置され
、液晶層の厚みｄ（ｍａ）と、液晶の屈折率異方性の積
、Δｎ−ｄが、０．７〜１．２趨の範囲内になる様に構
成された電界制御屈折効果型液晶表示装置に適用できる
のは勿論の事である。The present invention can also be applied to a case where a nematic liquid crystal composition exhibiting positive dielectric anisotropy is sandwiched between a pair of upper and lower transparent electronic substrates arranged opposite each other, and twisted in the thickness direction in the range of 180° to 270°. A spiral structure is formed, and the ratio d/P of the thickness d (trend) of the liquid crystal layer to the pitch P (trend) of the twisted spiral structure is 0.
The transmission axis of a pair of polarizing plates containing a predetermined amount of optical rotator 'α such that 5<d/P<1゜0, and having this helical structure separated by lυ, or The absorption axis is 4 with respect to the liquid crystal molecule alignment direction near the interface of the liquid crystal alignment film.
They are arranged at an angle of 5°±30° or 135°±30°, and the product of the thickness d (ma) of the liquid crystal layer and the refractive index anisotropy of the liquid crystal, Δn-d, is 0.7 to 1. It goes without saying that the present invention can be applied to an electric field controlled refractive effect type liquid crystal display device configured to have two peaks.
又、上面に偏光板の無いゲストホスト型液晶表示装置の
場合は、ガラス面とガラス面のとの接着になる訳である
が、何の支障も無く本発明を適用する事が可能である。Further, in the case of a guest-host type liquid crystal display device without a polarizing plate on the upper surface, the present invention can be applied without any problem, although the glass surfaces are bonded to each other.
（効果）
以上述べてきたように、本発明を用いれば、液晶表示装
置の表示面からの光反射によるｊＩＡ認性の低下をほぼ
完全に防止する事ができ、合わせて、偏光板の保護、或
は液晶表示装置の堅牢性を増大さＶる事が可能である。(Effects) As described above, by using the present invention, it is possible to almost completely prevent the deterioration of jIA recognition due to light reflection from the display surface of a liquid crystal display device, and also to protect the polarizing plate. Alternatively, it is possible to increase the robustness of the liquid crystal display device.
第１図は、本発明を用いた液晶表示装置の断面図。１は
上面が反射防止処理を施された透明ガラス基板、２は紫
外線硬化型接着剤、３．７は液晶表示装置に使用されで
いる偏光板、４．６は透明ガラス基板、５は液晶、８は
反射板である。
第２図は、本発明による液晶表示装置の製造方法を示す
模式図。９は、上面が反射処理を施された透明ガラス基
板、１０．１１は偏光板、１２は接着剤、１３はスペー
サー材である。FIG. 1 is a sectional view of a liquid crystal display device using the present invention. 1 is a transparent glass substrate whose upper surface has been subjected to anti-reflection treatment, 2 is an ultraviolet curable adhesive, 3.7 is a polarizing plate used in liquid crystal display devices, 4.6 is a transparent glass substrate, 5 is a liquid crystal, 8 is a reflecting plate. FIG. 2 is a schematic diagram showing a method of manufacturing a liquid crystal display device according to the present invention. 9 is a transparent glass substrate whose upper surface has been subjected to a reflective treatment, 10 and 11 are polarizing plates, 12 is an adhesive, and 13 is a spacer material.
Claims (1)
偏光板上に、少なくとも上面がエッチング或は真空蒸着
、スパッタ等により反射防止処理を施されたガラス基板
を、紫外線硬化型接着剤を介して接着したことを特徴と
する液晶表示装置。In various liquid crystal display devices, a glass substrate whose at least the upper surface has been subjected to antireflection treatment by etching, vacuum deposition, sputtering, etc. is bonded to the upper glass substrate or upper polarizing plate using an ultraviolet curable adhesive. A liquid crystal display device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61073248A JPS62229222A (en) | 1986-03-31 | 1986-03-31 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61073248A JPS62229222A (en) | 1986-03-31 | 1986-03-31 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62229222A true JPS62229222A (en) | 1987-10-08 |
Family
ID=13512685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61073248A Pending JPS62229222A (en) | 1986-03-31 | 1986-03-31 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62229222A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03148632A (en) * | 1989-11-06 | 1991-06-25 | Toshiba Corp | Liquid crystal display device |
| US5680186A (en) * | 1990-02-26 | 1997-10-21 | Sharp Kabushiki Kaisha | Liquid crystal display device with microlenses having a focal point between a cover layer and the liquid crystal layer's center |
| JP2008209510A (en) * | 2007-02-23 | 2008-09-11 | Nichibei Parts Co Ltd | Image display device and manufacturing method thereof |
-
1986
- 1986-03-31 JP JP61073248A patent/JPS62229222A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03148632A (en) * | 1989-11-06 | 1991-06-25 | Toshiba Corp | Liquid crystal display device |
| US5680186A (en) * | 1990-02-26 | 1997-10-21 | Sharp Kabushiki Kaisha | Liquid crystal display device with microlenses having a focal point between a cover layer and the liquid crystal layer's center |
| JP2008209510A (en) * | 2007-02-23 | 2008-09-11 | Nichibei Parts Co Ltd | Image display device and manufacturing method thereof |
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