【０００１】[0001]
【産業上の利用分野】本発明は、強誘電性液晶を用いた
液晶装置及びその製造方法に係り、詳しくは液晶パネル
及び配線基板を固定・支持する固定板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal device using a ferroelectric liquid crystal and a method for manufacturing the same, and more particularly to a fixing plate for fixing and supporting a liquid crystal panel and a wiring board.
【０００２】[0002]
【従来の技術】近年、液晶装置の表示領域の大型化の要
求に対し、比較的大画面化が容易な強誘電性液晶を用い
た液晶装置が精力的に開発されている。図５は、従来よ
く使われるネマチック液晶を用いた液晶装置の断面図で
ある。2. Description of the Related Art In recent years, liquid crystal devices using ferroelectric liquid crystals, which are relatively large in screen size, have been vigorously developed in response to the demand for larger display areas of liquid crystal devices. FIG. 5 is a cross-sectional view of a liquid crystal device using a nematic liquid crystal that is often used conventionally.
【０００３】液晶装置は大きく分けて液晶パネルとバッ
クライト装置とからなっている。液晶パネル１１は透明
電極を有し且つ液晶を挟持した２枚のガラス基板を有し
ている。このガラス基板には偏光板１７，１８が貼り付
けられて、さらに液晶パネル１１を駆動するための集積
回路を実装した駆動素子１３及び配線基板１２が設けら
れている。また、バックライト装置は、蛍光ランプ１
４、反射板１５及び拡散板２４を有して、反射板１５が
蛍光ランプ１４からの光を反射して液晶パネル１１に導
き、また拡散板２４は液晶パネル１１に入射する光の輝
度を表示領域で均一にしている。そしてこれらがゴム等
の緩衝部材９により板金や樹脂等で作られたカバー１０
に固定されている。A liquid crystal device is roughly divided into a liquid crystal panel and a backlight device. The liquid crystal panel 11 has two glass substrates having transparent electrodes and holding a liquid crystal therebetween. Polarizing plates 17 and 18 are attached to the glass substrate, and a drive element 13 and a wiring substrate 12 on which an integrated circuit for driving the liquid crystal panel 11 is mounted are further provided. Further, the backlight device is a fluorescent lamp 1.
4, having a reflection plate 15 and a diffusion plate 24, the reflection plate 15 reflects the light from the fluorescent lamp 14 and guides it to the liquid crystal panel 11, and the diffusion plate 24 displays the brightness of the light incident on the liquid crystal panel 11. The area is uniform. And these are covers 10 made of sheet metal, resin or the like by a cushioning member 9 such as rubber.
It is fixed to.
【０００４】しかし強誘電性液晶はネマチック液晶に比
べ機械的なストレスに弱く、上記構成では十分な性能を
持つ液晶装置を制作することが難しかった。そこで、図
６，図７に示すような液晶装置が提案されている。図６
は液晶装置の断面図であり、図７は組み立てを説明する
ための液晶パネル１１の裏面から見た斜視図である。液
晶パネル１１は中抜きされた固定板１９（額縁状）に弾
力性のある接着材により固定され、また固定板１９はこ
の固定板１９と一定の隙間を設けて配置された枠状部材
２０と弾力性を有した樹脂２１等により固定されてい
る。However, the ferroelectric liquid crystal is less susceptible to mechanical stress than the nematic liquid crystal, and it is difficult to produce a liquid crystal device having sufficient performance with the above structure. Therefore, a liquid crystal device as shown in FIGS. 6 and 7 has been proposed. Figure 6
FIG. 7 is a cross-sectional view of the liquid crystal device, and FIG. 7 is a perspective view of the liquid crystal panel 11 seen from the back surface for explaining the assembly. The liquid crystal panel 11 is fixed to a hollow fixed plate 19 (frame-shaped) with an elastic adhesive material, and the fixed plate 19 and a frame-shaped member 20 arranged with a fixed gap therebetween. It is fixed by a resin 21 having elasticity.
【０００５】また、液晶パネル１１の裏部にはバックラ
イト装置が設けられており、このバックライト装置と液
晶パネル１１及び固定板１９とにより略密閉空間を構成
して、密閉空間内の空気の緩衝効果（エアーダンパー効
果）で外部からの衝撃等による機械的ストレスから液晶
パネル１１、即ち強誘電性液晶を保獲している。A back light device is provided on the back of the liquid crystal panel 11, and the back light device, the liquid crystal panel 11 and the fixing plate 19 form a substantially closed space. Due to the buffering effect (air damper effect), the liquid crystal panel 11, that is, the ferroelectric liquid crystal is retained from the mechanical stress due to an external impact or the like.
【０００６】なお、液晶パネル１１を駆動する駆動素子
１３及びこの駆動素子１３に接続されている配線基板１
２も固定板１９に固定されている。A drive element 13 for driving the liquid crystal panel 11 and a wiring board 1 connected to the drive element 13 are provided.
2 is also fixed to the fixed plate 19.
【０００７】そして、上記構成に組立てた際には少なか
らずの機械的ストレスが加わり強誘電性液晶の配向性が
乱れているので、配向性を回復させるために８０℃〜１
００℃の温度で短時間加熱し、その後、室温まで約１時
間をかけて除冷を行なうことにより配向性の乱れを回復
させている（以下この熱処理を再配向熱処理と呼ぶ）。When assembled in the above-mentioned structure, a considerable amount of mechanical stress is applied to disturb the alignment of the ferroelectric liquid crystal.
The heating is performed at a temperature of 00 ° C. for a short time, and then the temperature is cooled to room temperature for about 1 hour to recover the disordered orientation (hereinafter, this heat treatment is referred to as a re-orientation heat treatment).
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、固定板
１９にはポリカーボネイト等の樹脂材料を使用している
ため再配向熱処理を行うと、ポリカーボネイト等の樹脂
材料は液晶パネル１１に用いられているガラス基板に比
べ熱膨張が大きく、図８に示すように加熱時に液晶パネ
ル１１が内側（図８では凹状）にして反ってしまう。こ
れにより液晶パネル１１にストレスが加わり、室温に戻
しても配向性が正常な状態に戻らなくなり、熱処理の効
果が得られなくなる問題があった。However, since the fixing plate 19 is made of a resin material such as polycarbonate, when the reorientation heat treatment is performed, the resin material such as polycarbonate is used for the liquid crystal panel 11. The thermal expansion of the liquid crystal panel 11 is larger than that of the liquid crystal panel of FIG. As a result, a stress is applied to the liquid crystal panel 11, and even if the temperature is returned to room temperature, the orientation does not return to the normal state, and there is a problem that the effect of the heat treatment cannot be obtained.
【０００９】また、加熱時にはガラス基板がほとんど熱
膨張しないことから、固定板１９が熱膨張した分だけ液
晶パネル１１に接続されている配線基板１２の接続部に
ストレスが集中して、この接続部が断線してしまうとい
った問題があった。Further, since the glass substrate hardly thermally expands during heating, stress concentrates on the connection portion of the wiring substrate 12 connected to the liquid crystal panel 11 due to the thermal expansion of the fixing plate 19, and this connection portion. There was a problem that it was broken.
【００１０】そこで本発明は、加熱時等温度変化によっ
て上述した凹状態に液晶パネルが変形しないようにして
断線等の発生を防止した液晶装置を提供することを目的
とする。Therefore, an object of the present invention is to provide a liquid crystal device in which the liquid crystal panel is prevented from being deformed into the above-mentioned concave state due to a temperature change such as during heating so as to prevent the occurrence of disconnection or the like.
【００１１】[0011]
【課題を解決するための手段】本発明は上述事情に鑑み
なされたものであって、情報を表示する液晶パネルと、
該液晶パネルを駆動する駆動素子と、該駆動素子に信号
を出力する配線基板と、を有して前記液晶パネル及び前
記配線基板が前記駆動素子を挟んで並設されると共に前
記駆動素子と接続されてなる液晶装置において、前記液
晶パネル及び前記配線基板を固定・支持する固定板を有
し、該固定板が針状のガラス繊維を含有し、且つ、該ガ
ラス繊維が非一様方向を有して均一分散してなる、こと
を特徴とする。The present invention has been made in view of the above circumstances, and includes a liquid crystal panel for displaying information,
The liquid crystal panel and the wiring board are arranged side by side with the driving element interposed therebetween and connected to the driving element, the driving element driving the liquid crystal panel, and a wiring board outputting a signal to the driving element. In the liquid crystal device, the fixing plate has a fixing plate for fixing and supporting the liquid crystal panel and the wiring board, the fixing plate contains needle-shaped glass fibers, and the glass fibers have non-uniform directions. And is uniformly dispersed.
【００１２】また、前記液晶パネルが所定間隙で対向し
た２枚の透明基板を有し、前記間隙に強誘電性液晶が挟
持されてなる。Further, the liquid crystal panel has two transparent substrates opposed to each other with a predetermined gap, and the ferroelectric liquid crystal is sandwiched in the gap.
【００１３】また、本発明に係る液晶装置の製造方法と
しては、前記固定板が鋳型成形体からなり、該鋳型成形
体が複数の注入口を有する鋳型に、前記ガラス繊維を含
有する成形基体を前記注入口から注入してなる、ことを
特徴とする。In addition, in the method for manufacturing a liquid crystal device according to the present invention, the fixing plate is a mold body, and the mold body has a plurality of injection ports, and the molded substrate containing the glass fiber is formed in the mold body. It is characterized by being injected from the injection port.
【００１４】[0014]
【作用】上記構成に基づき、固定板にガラス繊維を含有
させると共にそのガラス繊維の向きを非一様方向（ラン
ダム）にすることにより熱膨張率に等方性を持たせ、且
つ、液晶パネルと略同じ熱膨張率にする。Based on the above construction, the fixing plate is made to contain glass fibers and the glass fibers are oriented in a non-uniform direction (random) so that the coefficient of thermal expansion is isotropic and a liquid crystal panel is provided. The thermal expansion coefficient is almost the same.
【００１５】また、複数の注入口を有する鋳型にガラス
繊維を含有する成形基体を注入してガラス繊維の向きを
ランダムにした鋳型成形体を固定板とする。Further, a molded body in which glass fiber-containing molding substrates are injected into a mold having a plurality of injection ports and the glass fibers are randomly oriented is used as a fixing plate.
【００１６】[0016]
＜実施例１＞本発明の実施例１を図に沿って説明する。
図１は強誘電液晶を用いた液晶装置の断面図を示したも
ので、同図において、液晶装置は液晶パネル１１及びバ
ックライト装置３０等を有している。<First Embodiment> A first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view of a liquid crystal device using a ferroelectric liquid crystal, in which the liquid crystal device has a liquid crystal panel 11 and a backlight device 30.
【００１７】また、液晶パネル１１を駆動する集積回路
を有する駆動素子ｌ３及びこの駆動素子１３に信号を出
力する配線基板１２が液晶パネル１１に隣接して設けら
れている。さらに液晶パネル１１は弾力性を有するシリ
コン接着剤１６等により額縁状の固定板１９に接着さ
れ、そしてこの固定板１９はその周辺に所定の間隙を保
ってシリコン接着材２１により枠状部材２０に接着・固
定されている。なお、配線基板１２は固定板１９にネジ
等（不図示）用いて固定されている。A drive element 13 having an integrated circuit for driving the liquid crystal panel 11 and a wiring board 12 for outputting a signal to the drive element 13 are provided adjacent to the liquid crystal panel 11. Further, the liquid crystal panel 11 is adhered to a frame-shaped fixing plate 19 with a silicon adhesive 16 having elasticity, and the fixing plate 19 is fixed to the frame-shaped member 20 with a silicon adhesive 21 while keeping a predetermined gap around the frame. It is glued and fixed. The wiring board 12 is fixed to the fixing plate 19 with screws or the like (not shown).
【００１８】図２は液晶パネルの断面を示し、１．１ｍ
ｍ厚のガラス基板４０を有し、該ガラス基板４０には複
数の帯状の透明電極４１が形成されている。透明電極４
１にはＩｎ2 Ｏ3 やＩＴＯ等が使用され、その膜厚は１
５００Å程度に設定される。FIG. 2 shows a cross section of the liquid crystal panel.
A glass substrate 40 having a thickness of m is provided, and a plurality of strip-shaped transparent electrodes 41 are formed on the glass substrate 40. Transparent electrode 4
In2 O3 or ITO is used for 1 and the film thickness is 1
It is set to about 500Å.
【００１９】この後ショート防止用の絶縁体膜４２とし
てＳｉＯ2 をスパッタリング法により１０００Å形成し
た。この絶縁体膜４２としては、ＳｉＯ2 の他にＴａ2
Ｏ5等の無機絶縁物質でもよく、またＳｉ、Ｔｉ、Ｔ
ａ、Ｚｒ、Ａｌ等のうち少なくとも１元素を含む、有機
金属化合物を塗布・焼成して得られる無機系絶縁膜を用
いることもできる。また、膜厚は２００Å〜３０００Å
の範囲であればよい。After that, as the insulating film 42 for preventing a short circuit, SiO2 was formed by 1000 Å by the sputtering method. As the insulator film 42, in addition to SiO2 , Ta2
An inorganic insulating material such as O5 may be used, and Si, Ti, T
It is also possible to use an inorganic insulating film obtained by coating and firing an organometallic compound containing at least one element of a, Zr, Al and the like. Also, the film thickness is 200Å ~ 3000Å
It should be in the range of.
【００２０】さらに、絶縁体膜４２の上にはポリイミド
形成液をスピンナーで塗布し、２７０℃，１時間加熱し
てポリイミドの配向制御膜４３を約２００Å成膜した。
この配向制御膜４３としては、ポリビニルアルコール、
ポリイミド、ポリアミドイミド、ポリエステルイミド、
ポリパラキシリレン、ポリエステル、ポリカーボネー
ト、ポリビニルアセタール、ポリ塩化ビニル、ポリアミ
ド、ポリスチレン、セルロース樹脂、メラミン樹脂、ユ
リア樹脂やアクリル樹脂などの有機絶縁物質を用いても
よく、また膜厚は５０Å〜１０００Åの範囲であればよ
い。そして、この配向制御膜４３の表面をナイロン性の
ラビング布で一方向にラビング処理することによって、
ラビング方向と実質的に同一方向の配向規制力となる一
軸性配向軸が付与される。Further, a polyimide forming liquid was applied on the insulator film 42 by a spinner and heated at 270 ° C. for 1 hour to form a polyimide orientation control film 43 of about 200 Å.
As the orientation control film 43, polyvinyl alcohol,
Polyimide, polyamide imide, polyester imide,
Organic insulating substances such as polyparaxylylene, polyester, polycarbonate, polyvinyl acetal, polyvinyl chloride, polyamide, polystyrene, cellulose resin, melamine resin, urea resin and acrylic resin may be used, and the film thickness is 50 Å to 1000 Å. It only needs to be in the range. Then, by rubbing the surface of the alignment control film 43 in one direction with a nylon rubbing cloth,
A uniaxial orientation axis that serves as an orientation regulating force substantially in the same direction as the rubbing direction is provided.
【００２１】このようにして制作されたガラス基板４０
を、一方のガラス基板４０に平均粒径約１．５μｍのビ
ーズスペーサ４４（シリカビーズ、アルミナビーズ等）
を散布し、他方のガラス基板４０にエポキシ樹脂の接着
剤であるシール接着剤４５をスクリーン印刷法で形成
し、これら２枚のガラス基板４０を０．１μｍ〜３μｍ
の間隔に保持して対向させ、熱処理を施してシール接着
剤４５を固化させた。その後、強誘電性液晶４６を注入
して液晶パネルを製作した。なお、１８は上偏光板であ
り、１７は下偏光板である。The glass substrate 40 produced in this way
On one of the glass substrates 40, a bead spacer 44 (silica beads, alumina beads, etc.) having an average particle diameter of about 1.5 μm.
And a sealing adhesive 45, which is an epoxy resin adhesive, is formed on the other glass substrate 40 by a screen printing method, and these two glass substrates 40 are formed in a thickness of 0.1 μm to 3 μm.
The seal adhesive 45 was solidified by heat treatment by holding it at an interval of 2 and facing each other. After that, a ferroelectric liquid crystal 46 was injected to manufacture a liquid crystal panel. In addition, 18 is an upper polarizing plate and 17 is a lower polarizing plate.
【００２２】また、バックライト装置３０は複数の蛍光
ランプ１４を有し、この蛍光ランプ１４が発する光を液
晶パネル１１に導く反射板１５及び表示領域全面にわた
り均一な輝度を持たせる為の拡散板２４等で構成されて
いる。そしてバックライト装置３０の上部にはガラスや
アクリル等の透明な板に偏光フィルムを貼りつけた下偏
光板１７が設けられている。なお、ガラスやアクリル等
の透明な板に偏光フィルムを貼つた上偏光板１８はカバ
ー２２と共に枠状部材２０にネジ等により取り付けられ
ている。The backlight device 30 has a plurality of fluorescent lamps 14, and a reflector 15 for guiding the light emitted from the fluorescent lamps 14 to the liquid crystal panel 11 and a diffuser plate for providing a uniform brightness over the entire display area. It is composed of 24 etc. A lower polarizing plate 17 in which a polarizing film is attached to a transparent plate such as glass or acrylic is provided above the backlight device 30. The upper polarizing plate 18 in which a polarizing film is attached to a transparent plate such as glass or acrylic is attached to the frame-shaped member 20 together with the cover 22 by screws or the like.
【００２３】駆動中の液晶パネル１１は透明電極４１で
発するジュール熱や蛍光ランプ１４の発熱等により温度
上昇する。一方、周辺部分から熱が固定板１９に逃げて
しまい温度分布が発生する。この温度分布は強誘電性液
晶の駆動特性に分布を与えてしまうので理想的には温度
分布の無いものが望まれる。そこで、固定板１９は熱伝
導率の小さい樹脂等の材料が望まれる。The temperature of the liquid crystal panel 11 which is being driven rises due to Joule heat generated by the transparent electrode 41, heat generated by the fluorescent lamp 14 and the like. On the other hand, heat escapes from the peripheral portion to the fixed plate 19 and a temperature distribution is generated. Since this temperature distribution gives a distribution to the driving characteristics of the ferroelectric liquid crystal, it is ideally desired that there is no temperature distribution. Therefore, the fixing plate 19 is desired to be made of a material such as a resin having a low thermal conductivity.
【００２４】また、組立時に加わる機械的ストレス等に
より配向性の劣化が生じた場合は、液晶パネル１１は固
定板１９に接着されている為、液晶パネル１１、駆動素
子１３及び配線基板１２をそのままの状態で再配向熱処
理を行なわなければならない。このため、固定板１９は
再配向熱処理で加わる８０℃〜１００℃よりも熱変形温
度が高い材料（この温度での熱膨張がガラス基板に比べ
比較し得る程度であれば、再配向熱処理による凹状変形
による配向性の乱れは無視できる様になる）であること
が望まれる。When the alignment is deteriorated due to mechanical stress applied during assembly, the liquid crystal panel 11, the driving element 13, and the wiring board 12 are left as they are because the liquid crystal panel 11 is adhered to the fixing plate 19. Reorientation heat treatment must be performed in this state. Therefore, the fixing plate 19 is made of a material having a heat distortion temperature higher than 80 ° C. to 100 ° C. applied by the reorientation heat treatment (if the thermal expansion at this temperature is comparable to that of the glass substrate, the concave shape by the reorientation heat treatment is used. Distortion of orientation due to deformation can be ignored).
【００２５】この固定板１９の材料として鋳型成型が可
能なポリカーボネイト等が考えられる。しかし、このポ
リカーボネイトは６．６×ｌＯ-5／ｄｅｇの線膨張係数
のを持ち、固定板１９の外形寸法を３０Ｏｍｍ×３７Ｏ
ｍｍとした時、室温（２５℃）から７０℃上昇した場合
にガラス基板（８×ｌＯ-6／ｄｅｇ）との熱膨張差を計
算してみると、短辺側の伸びの差は１．２１８ｍｍとな
り、また長辺側の伸びの差は１．５０２ｍｍとなる。つ
まり、短辺側の液晶パネル１１と配線基板１２との間隔
が約０．６ｍｍ広がり、長辺側では約０．７５ｍｍ広が
ることになる。この程度の伸びであれば、再配向熱処理
による液晶パネル１１の凹状変形は余り問題に成らない
が、この伸びが液晶パネル１１や配線基板１２と駆動素
子１３との接続部に集中するため接続部分が破断してし
まう。従って、接続部の断線等も考慮すると、固定板１
９の材質を液晶パネル１１に用いられるガラス基板のよ
うな線膨張係数の小さい材質を選択する必要がある。As a material of the fixing plate 19, a moldable polycarbonate or the like can be considered. However, this polycarbonate has a coefficient of linear expansion of 6.6 × 10−5 / deg, and the external dimensions of the fixing plate 19 are 30 Omm × 37O.
When the difference in thermal expansion from the glass substrate (8 × 10−6 / deg) is calculated when the temperature rises from room temperature (25 ° C.) to 70 ° C. in mm, the difference in elongation on the short side is 1. 218 mm, and the difference in elongation on the long side is 1.502 mm. That is, the distance between the liquid crystal panel 11 and the wiring board 12 on the short side widens by about 0.6 mm, and the distance on the long side widens by about 0.75 mm. With this degree of extension, the concave deformation of the liquid crystal panel 11 due to the reorientation heat treatment does not pose a problem so much, but since this extension concentrates on the connection portion between the liquid crystal panel 11 or the wiring substrate 12 and the driving element 13, the connection portion. Will break. Therefore, considering the disconnection of the connecting portion, etc., the fixing plate 1
It is necessary to select a material having a small coefficient of linear expansion such as a glass substrate used for the liquid crystal panel 11 as the material of No. 9.
【００２６】そこで、本実施例１では、線膨張係数が小
さい樹脂材料には線膨張を抑える添加材（例えばガラス
繊維等）が入っている場合が多いことから針状のガラス
繊維を３０％含有させたポリカーボネイト（成形基体）
を固定板１９に用いた。Therefore, in Example 1, since the resin material having a small coefficient of linear expansion often contains an additive (for example, glass fiber) for suppressing the linear expansion, 30% of needle-shaped glass fiber is contained. Polycarbonate (molded substrate)
Was used for the fixing plate 19.
【００２７】なお、固定板１９を鋳型成型により形成す
る場合は、添加材が針状なので成形基体を単に鋳型に流
し込んだのでは、成形基体の流れに沿って針状の添加材
が分布してしまうので線膨張係数に異方性を生じてしま
う。そこで、本実施例１では、線膨張係数の異方性を少
なくするために固定板１９の鋳型の各辺中央に４ケ所の
注入口を設けて成形基体を注入した。図３はこの鋳型を
説明する斜視図で、鋳型５０は蓋部５０ａと鋳型部５０
ｂとからなり、注入口５１と空気抜き穴５２とを有して
いる。これにより、ガラス繊維は非一様方向（ランダム
な方向）を持ち、又均一に分散させることが可能にな
る。When the fixing plate 19 is formed by casting, the additive material is needle-shaped, so if the molded substrate is simply poured into the mold, the needle-shaped additive material will be distributed along the flow of the molded substrate. Therefore, the coefficient of linear expansion becomes anisotropic. Therefore, in the present Example 1, in order to reduce the anisotropy of the coefficient of linear expansion, four injection ports were provided in the center of each side of the mold of the fixed plate 19 to inject the molded substrate. FIG. 3 is a perspective view illustrating this mold. The mold 50 includes a lid portion 50a and a mold portion 50.
b, and has an inlet 51 and an air vent 52. As a result, the glass fibers have a non-uniform direction (random direction) and can be dispersed uniformly.
【００２８】以上説明した構成にすることにより、再配
向熱処理を行っても駆動素子１３と液晶パネル１１及び
配線基板１２との接続部が断線したり、また再配向熱処
理による液晶パネル１１に発生する反りによる配向性の
劣化が無くなった。 〈実施例２〉本発明の実施例２を図に沿って説明する。
なお本実施例２における液晶装置の基本構成は実施例１
と略同じなので同一符号を付して説明を省略する。With the above-described structure, the connection between the driving element 13 and the liquid crystal panel 11 and the wiring board 12 is broken even when the re-orientation heat treatment is performed, or the liquid crystal panel 11 is generated by the re-orientation heat treatment. Deterioration of the orientation due to warpage disappeared. <Second Embodiment> A second embodiment of the present invention will be described with reference to the drawings.
The basic configuration of the liquid crystal device according to the second embodiment is the same as that of the first embodiment.
Since it is almost the same as the above, the same reference numerals are given and the description thereof is omitted.
【００２９】図４は液晶装置の断面図を示している。本
実施例２では、固定板１９の材質に液晶パネル１１に用
いたガラス基板４０とほとんど線膨張係数の等しい無色
透明な青板ガラス板（線膨張係数０．８５×１０-5／ｄ
ｅｇ）を使用した。FIG. 4 shows a sectional view of the liquid crystal device. In the second embodiment, a colorless and transparent blue glass plate (having a linear expansion coefficient of 0.85 × 10−5 / d) having substantially the same linear expansion coefficient as that of the glass substrate 40 used for the liquid crystal panel 11 is used as the material of the fixing plate 19.
Eg) was used.
【００３０】そしてこの固定板１９の表面に液晶パネル
１１をシリコン接着剤１６を用いて固定した。その後、
固定板１９の周辺部に枠状部材２０を一定の隙間を設け
て配置し、その隙間に弾力性のあるシリコン接着材２１
を充填して支持した。また配線基板１２は青板ガラス板
に取り付けられている。Then, the liquid crystal panel 11 was fixed to the surface of the fixing plate 19 using the silicone adhesive 16. afterwards,
A frame-shaped member 20 is arranged in the peripheral portion of the fixed plate 19 with a certain gap, and a silicon adhesive 21 having elasticity is provided in the gap.
Was filled and supported. The wiring board 12 is attached to a soda-lime glass plate.
【００３１】なお、この固定板１９には、液晶パネル１
１の表示領域に穴を開けても構わないし、穴を開けずに
表示領域以外の部分を印刷や塗装等で液晶パネル１１の
周囲の部材が表示面側から見えない様にしても構わな
い。この際、シリコン接着剤１６を黒色にすると良い。The fixed plate 19 has a liquid crystal panel 1 attached thereto.
A hole may be formed in the first display area, or a portion other than the display area may be printed or painted so that the members around the liquid crystal panel 11 cannot be seen from the display surface side without forming the hole. At this time, the silicon adhesive 16 is preferably black.
【００３２】これにより、例え再配向熱処理により温度
が加わっても、液晶パネル１１と固定板１９が同程度に
膨張するので液晶パネル１１は凹状に変形することな
く、また配線基板１２も固定板１９に取り付けられてい
るので液晶パネル１１との接続部に応力が集中すること
が無く断線等が発生しなく成った。As a result, the liquid crystal panel 11 and the fixing plate 19 expand to the same extent even if a temperature is applied by the reorientation heat treatment, so that the liquid crystal panel 11 does not deform into a concave shape, and the wiring board 12 also fixes the fixing plate 19. Since it is attached to the liquid crystal panel, stress is not concentrated on the connection portion with the liquid crystal panel 11, and disconnection or the like does not occur.
【００３３】[0033]
【発明の効果】以上説明したように、固定板の材料とし
て鋳型成型が可能なポリカーボネイトを用い、このポリ
カーボネイトを基材として、ガラス繊維を添加した。こ
れにより熱膨張率が押えられ、再配向熱処理を行ったと
して液晶パネルが凹状に湾曲することなく、また液晶パ
ネルと配線基板との接続部が断線することがなくなっ
た。As described above, moldable polycarbonate is used as the material of the fixing plate, and glass fiber is added using this polycarbonate as a base material. As a result, the coefficient of thermal expansion was suppressed, the liquid crystal panel did not curve in a concave shape due to the reorientation heat treatment, and the connecting portion between the liquid crystal panel and the wiring board did not break.
【００３４】従って、再配向熱処理等の付加的な処理が
可能になり、歩留の上昇と共に液晶装置の信頼性をより
一層向上させることもできる。Therefore, additional treatment such as re-orientation heat treatment can be performed, and the yield can be increased and the reliability of the liquid crystal device can be further improved.
【図１】本発明の実施例１の説明に適用される液晶装置
の断面図。FIG. 1 is a sectional view of a liquid crystal device applied to the description of a first embodiment of the present invention.
【図２】本発明の実施例１の説明に適用される液晶パネ
ルの断面図。FIG. 2 is a sectional view of a liquid crystal panel applied to the description of the first embodiment of the present invention.
【図３】本発明の実施例１の説明に適用される鋳型の説
明図。FIG. 3 is an explanatory diagram of a mold applied to the description of Example 1 of the present invention.
【図４】本発明の実施例２の説明に適用される液晶装置
の断面図。FIG. 4 is a sectional view of a liquid crystal device applied to the description of Embodiment 2 of the present invention.
【図５】従来の技術の説明に適用される液晶装置の断面
図。FIG. 5 is a cross-sectional view of a liquid crystal device applied to the description of the conventional technique.
【図６】従来の技術の説明に適用される強誘電性液晶を
用いた液晶装置の断面図。FIG. 6 is a cross-sectional view of a liquid crystal device using a ferroelectric liquid crystal applied to the description of the conventional technique.
【図７】従来の技術の課題の説明に適用される液晶パネ
ルを有した固定板を説明する図。FIG. 7 is a diagram illustrating a fixing plate having a liquid crystal panel, which is applied to the description of the problems of the conventional technique.
【図８】従来の技術の課題の説明に適用される熱処理時
の液晶パネルの状態を説明する図。FIG. 8 is a diagram illustrating a state of a liquid crystal panel at the time of heat treatment, which is applied to the description of the problem of the conventional technique.
１１ 液晶パネル １２ 配線基板 １３ 駆動素子 １９ 固定板 ４０ ガラス基板（透明基板） ５０ 鋳型 ５１ 注入口 11 Liquid Crystal Panel 12 Wiring Board 13 Drive Element 19 Fixing Plate 40 Glass Substrate (Transparent Substrate) 50 Mold 51 Injection Port
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4053793AJPH06230352A (en) | 1993-02-03 | 1993-02-03 | Liquid crystal device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4053793AJPH06230352A (en) | 1993-02-03 | 1993-02-03 | Liquid crystal device |
| Publication Number | Publication Date |
|---|---|
| JPH06230352Atrue JPH06230352A (en) | 1994-08-19 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4053793APendingJPH06230352A (en) | 1993-02-03 | 1993-02-03 | Liquid crystal device |
| Country | Link |
|---|---|
| JP (1) | JPH06230352A (en) |
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| US5808707A (en)* | 1995-03-01 | 1998-09-15 | Canon Kabushiki Kaisha | Display apparatus |
| JP2006308824A (en)* | 2005-04-28 | 2006-11-09 | Citizen Miyota Co Ltd | Liquid crystal display |
| KR20110061027A (en)* | 2009-12-01 | 2011-06-09 | 엘지디스플레이 주식회사 | LCD Display |
| JP2012238004A (en)* | 2009-12-17 | 2012-12-06 | Mitsubishi Electric Corp | Display panel unit, display panel module, and display |
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| US5808707A (en)* | 1995-03-01 | 1998-09-15 | Canon Kabushiki Kaisha | Display apparatus |
| US6067133A (en)* | 1995-03-01 | 2000-05-23 | Canon Kabushiki Kaisha | Display apparatus with elastic members, display panel, panel-fixing member, housing member, faceplate and two almost closed spaces defined by them |
| JP2006308824A (en)* | 2005-04-28 | 2006-11-09 | Citizen Miyota Co Ltd | Liquid crystal display |
| KR20110061027A (en)* | 2009-12-01 | 2011-06-09 | 엘지디스플레이 주식회사 | LCD Display |
| JP2012238004A (en)* | 2009-12-17 | 2012-12-06 | Mitsubishi Electric Corp | Display panel unit, display panel module, and display |
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