JPS6029089B2 - liquid crystal display device - Google Patents

liquid crystal display device

Info

Publication number
JPS6029089B2
JPS6029089B2 JP52159308A JP15930877A JPS6029089B2 JP S6029089 B2 JPS6029089 B2 JP S6029089B2 JP 52159308 A JP52159308 A JP 52159308A JP 15930877 A JP15930877 A JP 15930877A JP S6029089 B2 JPS6029089 B2 JP S6029089B2
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
glass
display device
alkali
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.)
Expired
Application number
JP52159308A
Other languages
Japanese (ja)
Other versions
JPS5498633A (en
Inventor
準一 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Priority to JP52159308A priority Critical patent/JPS6029089B2/en
Publication of JPS5498633A publication Critical patent/JPS5498633A/en
Publication of JPS6029089B2 publication Critical patent/JPS6029089B2/en
Expired legal-status Critical Current

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  • Liquid Crystal (AREA)
  • Liquid Crystal Substances (AREA)

Description

【発明の詳細な説明】 本発明は液晶表示装置の基板にソーダライムガラスと棚
珪酸ガラスの中間と分類されるガラスの使用に関するも
の。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the use of a glass classified as intermediate between soda lime glass and shelf silicate glass for the substrate of a liquid crystal display device.

本発明の目的はアルカリイオン溶出量が棚珪酸ガラスと
ソーダライムガラスの中間に分類するガラスを基板に使
用してガラスコストを低減することにある。
An object of the present invention is to reduce the glass cost by using a glass whose alkali ion elution amount is between that of shelf silicate glass and soda lime glass as a substrate.

他の目的は該基板にアルカリ港出防止膜を形成しない液
晶表示装置を提供することにある。第1図、第2図に従
釆の液晶表示装置の具体例をあげて説明する。
Another object of the present invention is to provide a liquid crystal display device in which no alkaline port prevention film is formed on the substrate. A specific example of a liquid crystal display device will be described below with reference to FIGS. 1 and 2.

第1図の従来実施例は基板1にアルカリ溶出量0.02
の9程度の棚珪酸ガラスを使用して、該基板にシランカ
ツプリング剤配向処理膜2をコーティングし、該基板間
にェステル結合液晶3を封入しているが、この構造だと
棚珪酸ガラスに光学研摩を行なう等非常に高価なガラス
になってしまい液晶表示装層のコストを大中にアップさ
せてしまう。
In the conventional example shown in FIG.
The substrate is coated with a silane coupling agent alignment film 2, and the ester-bonded liquid crystal 3 is sealed between the substrates. This results in very expensive glass that requires optical polishing, which significantly increases the cost of the liquid crystal display layer.

第2図の従来の他の実施例は基板11にアルカリ溶出量
0.4〜0.5の9のソーダライムガラスを使用して、
配向処理膜13にSiOの斜め蒸着もしくはシランカッ
プリング剤をコーティングしェステル結合液晶14を封
入しているが、この構造だとソーダライムガラスに含ま
れるアルカリイオンが多く、該配向処理膜だと溶出防止
効果がないので液晶層への溶出により液晶の配向を乱す
要因になるため、アルカリイオン港出防止膜1 2をS
i02等酸化物をスパッタリング法等で形成している。
このため製造工程が複雑になり液晶表示装置製造コスト
を大中にアップしてしまう。本発明は以上の欠点を除去
するものである。
Another conventional embodiment shown in FIG. 2 uses No. 9 soda lime glass with an alkali elution amount of 0.4 to 0.5 as the substrate 11.
The alignment film 13 is coated with SiO by oblique evaporation or a silane coupling agent to encapsulate the ester-bonded liquid crystal 14. However, with this structure, there are many alkali ions contained in soda lime glass, which elute from the alignment film. Alkaline ion migration prevention films 1 and 2 are
An oxide such as i02 is formed by sputtering or the like.
This complicates the manufacturing process and significantly increases the manufacturing cost of the liquid crystal display device. The present invention eliminates the above drawbacks.

本発明の実施例を第3図に示し説明する。基板21にア
ルカリ溶出量0.03〜0.3の9の棚珪酸ガラスとソ
ーダライムガラスの中間に分類するガラスを使用し、該
基板の相対する面に配向処理膜22にたとえばテトラフ
ルオルェチレンの有機ポリマーをコーティングし、該基
板間に封入される液晶組成物23には、ビィフェニール
が添加されており、以上を組み合せた構成の液晶表示装
置である。この構造においてはアルカリ含有の多いガラ
スを使用しているが、ガラスより溶出するアルカリイオ
ンは配向処理膜に使用している有機ポリマーのアルカリ
溶出防止効果により液晶への溶出を微弱に押え、又液晶
においても配向を乱すアルカリイオンの影響を受けにく
いビィフェニールが添加された液晶組成物を使用するこ
とでSi02等の酸化物でアルカリ溶出防止膜を形成し
なくとも従来の液晶表示装置と同等の寿命が確保できる
。この様にアルカリ溶出量が棚珪酸ガラス0.02の3
より多くなるとガラスは光学研摩を必要とせずに実用可
能な面平坦度が得られるためガラスコストが大中に低減
することができる。又アルカリ溶出量が0.4の9以上
あるソーダライムガラスに比べると溶出量が少ないので
有機ポリマー配向処理膜とビィフェニールが添加された
液晶組成物との組み合せによりアルカリイオンの影響を
防げる。これによりガラスコストを大中に低減でき、又
従来のアルカリ溶出防止膜形成が不要になり非常に大き
な合理化効果が得られる。本発明の説明では最つとも合
理化効果の大きいアルカリ溶出量0.03〜0.3の9
のガラス基板、有機ポリマー配向剤、ピィフェニールが
添加された液晶組成物の組み合せで行なったが従来の液
晶表示装置のガラス基板に本発明のガラスを使用して従
来のアルカリ済出防止膜を形成し従来の配向処理及び液
晶を使用しても合理化効果は大きい、又この液晶表示装
置の配向処理剤に本発明の有機ポリマーを使用すること
で更に品質安定した液晶表示装置を提供することができ
る。以上説明したように、本発明の液晶表示装置はガラ
ス基板に、アルカリ溶出量が0.03〜0.3の9のガ
ラスを用い、液晶組成物にはビフェニールが添加されて
おり、配向処理剤にはテトラフルオルェチレンの有機ポ
リマーを使用したので、処理コストの高いアルカリ溶出
防止膜をわざわざ付着する必要がなくかつ比較的安価な
ガラスを使用できる効果がある。
An embodiment of the present invention is shown in FIG. 3 and will be described. For the substrate 21, a glass classified between 9-shelf silicate glass and soda lime glass with an alkali elution amount of 0.03 to 0.3 is used, and the alignment treatment film 22 is coated with, for example, tetrafluoric acid, on the opposing surface of the substrate. Biphenyl is added to the liquid crystal composition 23 which is coated with an organic polymer of tyrene and sealed between the substrates, and the liquid crystal display device is a combination of the above. In this structure, glass with a high alkali content is used, but the alkali ions eluted from the glass are slightly suppressed from leaching into the liquid crystal due to the alkali elution prevention effect of the organic polymer used in the alignment treatment film. By using a liquid crystal composition to which biphenyl is added, which is less susceptible to the effects of alkali ions that disturb orientation, it is possible to achieve the same lifespan as conventional liquid crystal display devices without forming an alkali elution prevention film with oxides such as Si02. can be secured. In this way, the alkali elution amount is 0.02 to 3 of the shelf silicate glass.
If the amount is larger, the glass can have a practically usable surface flatness without the need for optical polishing, so the cost of the glass can be significantly reduced. Furthermore, since the amount of alkali elution is smaller than that of soda lime glass, which has an alkali elution amount of 0.4 or more, the influence of alkali ions can be prevented by combining the organic polymer alignment treatment film and the liquid crystal composition to which biphenyl is added. As a result, the glass cost can be greatly reduced, and the conventional formation of an alkali elution prevention film is no longer necessary, resulting in a very large rationalization effect. In the explanation of the present invention, the alkali elution amount 0.03 to 0.3 is 9, which has the greatest rationalizing effect.
A conventional alkaline bleed-out prevention film was formed using the glass of the present invention on a glass substrate of a conventional liquid crystal display device. However, even if conventional alignment treatment and liquid crystal are used, the rationalization effect is large, and by using the organic polymer of the present invention as an alignment treatment agent for this liquid crystal display device, it is possible to provide a liquid crystal display device with even more stable quality. . As explained above, in the liquid crystal display device of the present invention, a glass having an alkali elution amount of 0.03 to 0.3 is used for the glass substrate, biphenyl is added to the liquid crystal composition, and an alignment treatment agent is added to the liquid crystal composition. Since an organic polymer of tetrafluoroethylene is used, there is no need to take the trouble of attaching an alkali elution prevention film, which is expensive to process, and relatively inexpensive glass can be used.

液晶表示装置の大量生産に最適であり工業的価値の高い
ものである。
It is ideal for mass production of liquid crystal display devices and has high industrial value.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来の実施例を示す液晶表示装置の断面図。 第2図は従来の実施例を示す液晶表示装置の断面図。第
3図は本発明の実施例を示す液晶表示装置の断面図。、
12 、Z【妥 、’2
FIG. 1 is a sectional view of a liquid crystal display device showing a conventional example. FIG. 2 is a sectional view of a liquid crystal display device showing a conventional example. FIG. 3 is a sectional view of a liquid crystal display device showing an embodiment of the present invention. ,
12, Z [compromised, '2

Claims (1)

【特許請求の範囲】[Claims] 1 表面に電極パターンが形成された少なくとも2枚以
上の相対向する基板間に液晶組成物が挾持され、前記基
板内面には配向処理が施された液晶表示装置において、
前記基板のアルカリ溶出量はJIS・R3502試験方
法(以下本明細書に記載されたアルカリ溶出量はこの規
格に基づいて測定した結果)で測定して0.03〜0.
3mgのガラスを使用し、前記液晶組成物はビイフエニ
ールが添加された液晶組成物が使用されており、前記配
向処理の処理剤にはテトラフルオルエチレンが使用され
ていることを特徴とする液晶表示装置。
1. A liquid crystal display device in which a liquid crystal composition is sandwiched between at least two opposing substrates each having an electrode pattern formed on the surface thereof, and an alignment treatment is performed on the inner surface of the substrates,
The amount of alkali elution from the substrate was measured by the JIS R3502 test method (hereinafter, the amount of alkali elution described in this specification was measured based on this standard) and was 0.03 to 0.
3 mg of glass, the liquid crystal composition is a liquid crystal composition to which biphenyl is added, and the treatment agent for the alignment treatment is tetrafluoroethylene. Device.
JP52159308A 1977-12-29 1977-12-29 liquid crystal display device Expired JPS6029089B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52159308A JPS6029089B2 (en) 1977-12-29 1977-12-29 liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52159308A JPS6029089B2 (en) 1977-12-29 1977-12-29 liquid crystal display device

Publications (2)

Publication Number Publication Date
JPS5498633A JPS5498633A (en) 1979-08-03
JPS6029089B2 true JPS6029089B2 (en) 1985-07-09

Family

ID=15690956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52159308A Expired JPS6029089B2 (en) 1977-12-29 1977-12-29 liquid crystal display device

Country Status (1)

Country Link
JP (1) JPS6029089B2 (en)

Also Published As

Publication number Publication date
JPS5498633A (en) 1979-08-03

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