JP2000010102A - Liquid crystal cell end-sealing device - Google Patents
Liquid crystal cell end-sealing deviceInfo
- Publication number
- JP2000010102A JP2000010102A JP10170375A JP17037598A JP2000010102A JP 2000010102 A JP2000010102 A JP 2000010102A JP 10170375 A JP10170375 A JP 10170375A JP 17037598 A JP17037598 A JP 17037598A JP 2000010102 A JP2000010102 A JP 2000010102A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal cell
- injection port
- sealing device
- cell
- 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.)
- Ceased
Links
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- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶セル封止装置
に関し、特に液晶セルを加圧することでセル内の余分な
液晶を液晶注入口から排出させるとともに、この液晶注
入口を封止剤で封止する液晶セル封止装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for sealing a liquid crystal cell, and more particularly to a method for compressing a liquid crystal cell to discharge excess liquid crystal in the cell from a liquid crystal injection port and to seal the liquid crystal injection port with a sealant. The present invention relates to a liquid crystal cell sealing device for sealing.
【０００２】[0002]
【従来の技術】従来の液晶セルの液晶注入方法の１つに
は、最初に液晶セルに液晶を多めに注入しておき、液晶
セルを加圧することでセルの液晶注入口から余分な液晶
を排出し、この状態で液晶注入口に封止剤を塗布し、硬
化させて封止するという方法がある。この液晶セル加圧
および液晶注入口封止を行うときに用いるのが液晶セル
封止装置である。従来の液晶セル封止装置は、液晶セル
を収容し、この液晶セルの液晶注入口を露出させる開口
部を有する加圧容器と、この開口部を塞ぐシール部材か
ら概略構成されている。2. Description of the Related Art One of the conventional methods for injecting liquid crystal into a liquid crystal cell is to first inject a large amount of liquid crystal into a liquid crystal cell, and then pressurize the liquid crystal cell so that excess liquid crystal is injected from the liquid crystal injection port of the cell. There is a method of discharging the liquid, applying a sealing agent to the liquid crystal injection port in this state, and curing and sealing the liquid crystal injection port. A liquid crystal cell sealing device is used when the liquid crystal cell is pressed and the liquid crystal injection port is sealed. 2. Description of the Related Art A conventional liquid crystal cell sealing device generally includes a pressure vessel having an opening for accommodating a liquid crystal cell and exposing a liquid crystal injection port of the liquid crystal cell, and a sealing member for closing the opening.
【０００３】図５は、従来の液晶セル封止装置の開口部
付近を示す断面図である。液晶セル封止装置の加圧容器
１１の開口部から液晶セル１２、１２…の下端が露出し
ており、液晶セル１２、１２…の下端部近傍にはシール
部材１３、１３…が挟み込まれるように設けられ、加圧
容器１１の開口部を塞ぐようになっている。液晶セル１
２、１２…の液晶注入口１４、１４…を塞ぐ場合、各液
晶注入口１４に封止剤１５を塗布し、これを硬化させる
ことで行う。この時、封止剤１５としては紫外光硬化樹
脂が用いられることがある。FIG. 5 is a sectional view showing the vicinity of an opening of a conventional liquid crystal cell sealing device. The lower ends of the liquid crystal cells 12, 12 are exposed from the opening of the pressurized container 11 of the liquid crystal cell sealing device, and the sealing members 13, 13 are sandwiched near the lower ends of the liquid crystal cells 12, 12,. To close the opening of the pressurized container 11. Liquid crystal cell 1
When closing the liquid crystal injection ports 14, 12,..., The sealing agent 15 is applied to each of the liquid crystal injection ports 14, and this is cured. At this time, an ultraviolet curable resin may be used as the sealant 15.
【０００４】[0004]
【発明が解決しようとする課題】図５において、紫外光
を図中矢印方向から照射するとき、シール部材１３は紫
外光を透過させてしまうので、液晶セル１２の下部に配
向膜も紫外光にさらされる。配向膜は紫外光にさらされ
ると、その特性が変化してしまう。具体的には、紫外光
が照射された個所のプレチルト角がアップし、液晶分子
の立ち上がりが部分的に大きくなる。これが液晶セルに
色ムラを生じさせ、セルの品質を低下させる原因となる
恐れがあった。上記の点に鑑み、本発明は、液晶注入口
封止時に発生する液晶セルの色ムラを低減することので
きる液晶セル封止装置を提供することを目的とする。In FIG. 5, when the ultraviolet light is irradiated from the direction of the arrow in the figure, the sealing member 13 transmits the ultraviolet light, so that the alignment film under the liquid crystal cell 12 is also converted to the ultraviolet light. Exposed. When the alignment film is exposed to ultraviolet light, its characteristics change. Specifically, the pretilt angle at the location where the ultraviolet light is irradiated increases, and the rise of the liquid crystal molecules partially increases. This may cause color unevenness in the liquid crystal cell and may cause deterioration of the cell quality. In view of the above, it is an object of the present invention to provide a liquid crystal cell sealing device that can reduce color unevenness of a liquid crystal cell generated when a liquid crystal injection port is sealed.
【０００５】[0005]
【課題を解決するための手段】本発明に係る液晶セル封
止装置は、液晶セルを収容し、この液晶セルの液晶注入
口周辺を露出させるための開口部を有する加圧容器と、
この開口部を横切るように液晶セルを保持した状態で開
口部を塞ぐとともに液晶セルの液晶注入口周辺を露出さ
せるように設置され、加圧容器内の気密状態を保持する
シール部材とを具備してなり、このシール部材を封止剤
硬化に使用する紫外光の透過を防ぐように着色したこと
を特徴とする。すなわち、シール部材を着色して紫外光
の透過を防ぐことで、液晶セルの配向膜の特性変化を抑
え、液晶セルに生じる色ムラを低減することができる。According to the present invention, there is provided a liquid crystal cell encapsulating apparatus for accommodating a liquid crystal cell and having an opening for exposing an area around a liquid crystal injection port of the liquid crystal cell;
A sealing member that is installed so as to close the opening while exposing the vicinity of the liquid crystal injection port of the liquid crystal cell while holding the liquid crystal cell so as to cross the opening, and to maintain an airtight state in the pressurized container. The seal member is characterized by being colored so as to prevent transmission of ultraviolet light used for curing the sealant. That is, by changing the color of the sealing member to prevent transmission of ultraviolet light, a change in the characteristics of the alignment film of the liquid crystal cell can be suppressed, and color unevenness occurring in the liquid crystal cell can be reduced.
【０００６】本発明に係る液晶セル封止装置にあって
は、シール部材が弾性変形可能な材料から構成された場
合、このシール部材を挟み込むように設けられ、シール
部材を加圧容器内側へ湾曲させることで開口部から液晶
セルの液晶注入口周辺を露出させる治具を具備すること
が好ましい。このような治具を用いることで、シール部
材の形状を安定化することができる。In the liquid crystal cell sealing device according to the present invention, when the sealing member is made of an elastically deformable material, the sealing member is provided so as to sandwich the sealing member, and the sealing member is bent toward the inside of the pressure vessel. It is preferable to provide a jig for exposing the periphery of the liquid crystal injection port of the liquid crystal cell from the opening. By using such a jig, the shape of the seal member can be stabilized.
【０００７】[0007]
【発明の実施の形態】以下、図面により本発明について
詳細に説明するが、本発明はこれらの実施形態例のみに
限定されるものではない。図１は本実施の形態の液晶セ
ル封止装置を示す概略構成図、図２は図１のII−II線断
面図、図３は図１のIII−III線断面図である。この液晶
セル封止装置１は、加圧容器２、シールチューブ（シー
ル部材）３、上部治具４、下部治具５から概略構成され
ている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to only these embodiments. FIG. 1 is a schematic configuration diagram showing a liquid crystal cell sealing device of the present embodiment, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. This liquid crystal cell sealing device 1 is roughly constituted by a pressurized container 2, a seal tube (seal member) 3, an upper jig 4, and a lower jig 5.
【０００８】図１に示すように、加圧容器２の下端部に
は開口部２ａが、加圧容器２の上部には気体導入口２ｂ
が設けられており、気体導入口２ｂには図示しない気体
供給源から加圧容器２内部に気体が供給されるようにな
っている（矢印Ａ方向）。シールチューブ３は、テフロ
ンコーティングを施したシリコンゴムからなる管体であ
り、紫外光の透過を防ぐように着色されている。このシ
ールチューブ３は、加圧された気体がチューブ内に導入
されても漏れないように、加圧容器２内に設置されてい
る側の端部３ａは塞がれている。もう一方の端部は、加
圧容器２下部の気体導入口２ｃを挿通して図示しない気
体供給源に接続され、気体が供給されるようになってい
る（矢印Ｂ方向）。As shown in FIG. 1, an opening 2a is provided at the lower end of the pressurized container 2, and a gas inlet 2b is provided at the upper part of the pressurized container 2.
The gas supply port 2b is configured to supply a gas into the pressurized container 2 from a gas supply source (not shown) (in the direction of arrow A). The seal tube 3 is a tube made of silicon rubber coated with Teflon, and is colored so as to prevent transmission of ultraviolet light. The end 3a of the seal tube 3 on the side provided in the pressurized container 2 is closed so that even if the pressurized gas is introduced into the tube, the seal tube 3 does not leak. The other end is connected to a gas supply source (not shown) through the gas inlet 2c at the lower part of the pressurized container 2 so that gas is supplied (in the direction of arrow B).
【０００９】図２および図３に示すように、本実施の形
態の液晶セル封止装置１は、加圧容器２内に４枚の液晶
セル６を収容することができるように構成されている。
上部治具４は板状であり、この４枚の液晶セル６が挿通
する孔が設けられている。図１に示すように、上部治具
４の下面には凹部が設けられ、下部治具５はその凹部に
はまり込むような略コの字状の形状となっている。これ
ら上部治具４、下部治具５は硬質樹脂製となっている。
また、液晶セル封止装置１には図示しない紫外光の光源
および封止剤塗布部も備えられている。As shown in FIGS. 2 and 3, a liquid crystal cell sealing device 1 according to the present embodiment is configured so that four liquid crystal cells 6 can be accommodated in a pressurized container 2. .
The upper jig 4 has a plate shape, and is provided with holes through which the four liquid crystal cells 6 are inserted. As shown in FIG. 1, a concave portion is provided on the lower surface of the upper jig 4, and the lower jig 5 has a substantially U shape so as to fit into the concave portion. The upper jig 4 and the lower jig 5 are made of hard resin.
In addition, the liquid crystal cell sealing device 1 is also provided with an ultraviolet light source (not shown) and a sealant application unit.
【００１０】次に、液晶セル６、６…の加圧容器２内へ
の装填について説明する。あらかじめ液晶が注入された
液晶セル６、６…は、図２および図３に示すように、加
圧容器２内に直立し、上部治具４の孔を挿通した状態で
装填される。上部治具４の下、加圧容器２と液晶セル６
の間および液晶セル６と液晶セル６の間にはシールチュ
ーブ３、３…が設けられ、液晶セル６、６…とシールチ
ューブ３、３…は開口部２ａを塞ぐように配置される。
この時、図４Ａに示すように、液晶セル６の液晶注入口
６ａは、シールチューブ３により覆われている。Next, loading of the liquid crystal cells 6 into the pressurized container 2 will be described. The liquid crystal cells 6, 6,... Into which liquid crystal has been injected in advance are loaded upright in the pressure vessel 2 and inserted into the holes of the upper jig 4, as shown in FIGS. Under the upper jig 4, the pressure vessel 2 and the liquid crystal cell 6
Are provided between the liquid crystal cells 6 and between the liquid crystal cells 6, and the liquid crystal cells 6, 6 and the seal tubes 3, 3,... Are arranged so as to cover the openings 2a.
At this time, as shown in FIG. 4A, the liquid crystal injection port 6 a of the liquid crystal cell 6 is covered with the seal tube 3.
【００１１】液晶セル６から余分な液晶を排出する際、
液晶注入口６ａを加圧容器２の外部に露出させる必要が
ある。これは、シールチューブ３、３…を湾曲させるこ
とで対応できる。液晶セル封止装置１に設けられた図示
しない駆動機構により、下部治具５を加圧容器２外部か
らシールチューブ３、３…に当接させる。下部治具５で
シールチューブ３、３…を加圧容器２内に押し込むこと
でシールチューブ３、３…は湾曲する。上部治具４の下
面には凹部が設けられており、上部治具４と下部治具５
でシールチューブ３、３…を弾性変形させ、図４Ｂに示
すように上部治具４の凹部にシールチューブ３、３…を
押し込むことで、液晶注入口６ａを露出させることがで
きる。When discharging extra liquid crystal from the liquid crystal cell 6,
It is necessary to expose the liquid crystal inlet 6a to the outside of the pressurized container 2. This can be dealt with by bending the seal tubes 3, 3,.... A drive mechanism (not shown) provided in the liquid crystal cell sealing device 1 causes the lower jig 5 to contact the seal tubes 3 from outside the pressurized container 2. By pressing the seal tubes 3, 3,... Into the pressurized container 2 with the lower jig 5, the seal tubes 3, 3,. A concave portion is provided on the lower surface of the upper jig 4, and the upper jig 4 and the lower jig 5
By elastically deforming the seal tubes 3, 3,..., And pushing the seal tubes 3, 3,... Into the concave portions of the upper jig 4 as shown in FIG. 4B, the liquid crystal inlet 6a can be exposed.
【００１２】このようにして液晶セル６、６…を加圧容
器２内に装填した後、加圧容器２内に気体を導入して液
晶セル６、６…に圧力を加え、セル内の余分な液晶を排
出させる。この時、シールチューブ３、３…内に加圧容
器２より高い圧力をかけることで、加圧容器２内の圧力
によるチューブの歪みおよび加圧容器２からの気体の漏
れを防ぐ。After the liquid crystal cells 6, 6,... Are loaded in the pressurized container 2, gas is introduced into the pressurized container 2 to apply pressure to the liquid crystal cells 6, 6,. To discharge the liquid crystal. At this time, by applying a pressure higher than that of the pressurized container 2 to the seal tubes 3, 3,..., Distortion of the tube due to the pressure in the pressurized container 2 and leakage of gas from the pressurized container 2 are prevented.
【００１３】液晶の排出が終了したら、液晶注入口６
ａ、６ａ…を封止剤で封止する。この封止剤は紫外光に
より硬化するものを使用する。各液晶注入口６ａに封止
剤を塗布した後、図１に示すように紫外光を下方から照
射し封止剤を硬化させる。この時、シールチューブ３、
３…は紫外光の透過を防ぐように着色されているので、
液晶セル６、６…の配向膜への紫外光の影響を抑えるこ
とができ、これにより液晶セル６、６…の色ムラを低減
することができる。When the liquid crystal has been discharged, the liquid crystal inlet 6
are sealed with a sealant. The sealant used is one that is cured by ultraviolet light. After applying a sealant to each liquid crystal injection port 6a, ultraviolet light is irradiated from below to cure the sealant as shown in FIG. At this time, the seal tube 3,
3 ... is colored so as to prevent transmission of ultraviolet light.
The influence of the ultraviolet light on the alignment films of the liquid crystal cells 6, 6,... Can be suppressed, whereby the color unevenness of the liquid crystal cells 6, 6,.
【００１４】上述のように、本実施形態の液晶セル封止
装置においては、シールチューブ３、３…を着色して紫
外光の透過を防ぐことで、液晶セル６、６…の配向膜の
特性変化を抑え、液晶セル６、６…の色ムラを低減する
ことができる。本実施形態の液晶セル封止装置では、シ
ールチューブ３の変形に治具を用いており、さらに、シ
ールチューブ３に加圧容器２より高い圧力をかけること
で、シールチューブ３の形状を安定化することができ、
作業中にシールチューブ３が加圧容器２の外部に押し出
されたりすることはない。As described above, in the liquid crystal cell sealing device of the present embodiment, the sealing tubes 3, 3,... Are colored to prevent the transmission of ultraviolet light, so that the characteristics of the alignment films of the liquid crystal cells 6, 6,. The change can be suppressed, and the color unevenness of the liquid crystal cells 6, 6,... Can be reduced. In the liquid crystal cell sealing device of the present embodiment, a jig is used to deform the seal tube 3, and the shape of the seal tube 3 is stabilized by applying a higher pressure to the seal tube 3 than the pressurized container 2. Can be
During the operation, the seal tube 3 is not pushed out of the pressurized container 2.
【００１５】なお、本発明の技術範囲は上記実施の形態
に限定されるものではなく、本発明の趣旨を逸脱しない
範囲において種々の変更を加えることが可能である。例
えば本実施の形態のシールチューブ３、上部治具４、下
部治具５等の形状、材質は適宜変更して差し支えない。The technical scope of the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention. For example, the shapes and materials of the seal tube 3, the upper jig 4, the lower jig 5, and the like of the present embodiment may be appropriately changed.
【００１６】[0016]
【発明の効果】以上詳細に説明した通り、本発明の液晶
セル封止装置は、加圧容器の開口部からの気体漏れを防
ぐシール部材を着色して紫外光の透過を防ぐことで、液
晶セルの配向膜の特性変化を抑え、液晶セルに生じる色
ムラを低減することができる。また、本発明の液晶セル
封止装置は、シール部材としてシールチューブを使用
し、このシールチューブの変形に治具を用いており、さ
らに、シールチューブに加圧容器より高い圧力をかけて
いるので、シールチューブの形状は安定化しており、作
業中にシールチューブが加圧容器の外部に押し出された
りすることはない。As described in detail above, the liquid crystal cell sealing device of the present invention is characterized in that the sealing member for preventing gas from leaking from the opening of the pressurized container is colored to prevent the transmission of ultraviolet light, and the liquid crystal cell is sealed. Changes in the characteristics of the alignment film of the cell can be suppressed, and color unevenness occurring in the liquid crystal cell can be reduced. In addition, the liquid crystal cell sealing device of the present invention uses a seal tube as a seal member, uses a jig to deform the seal tube, and further applies a higher pressure to the seal tube than the pressurized container. The shape of the seal tube is stabilized, and the seal tube is not pushed out of the pressurized container during the operation.
【図１】 本実施の形態の液晶セル封止装置を示す概略
構成図である。FIG. 1 is a schematic configuration diagram showing a liquid crystal cell sealing device of the present embodiment.
【図２】 図１のII−II線断面図である。FIG. 2 is a sectional view taken along line II-II of FIG.
【図３】 図１のIII−III線断面図である。FIG. 3 is a sectional view taken along line III-III of FIG.
【図４】 開口部２ａの拡大図である。FIG. 4 is an enlarged view of an opening 2a.
【図５】 従来の液晶セル封止装置の開口部付近を示す
側面図である。FIG. 5 is a side view showing the vicinity of an opening of a conventional liquid crystal cell sealing device.
１ 液晶セル封止装置 ２ 加圧容器 ２ａ 開口部 ３ シールチューブ（シール部材） ４ 上部治具 ５ 下部治具 ６ 液晶セル ６ａ 液晶注入口 DESCRIPTION OF SYMBOLS 1 Liquid crystal cell sealing device 2 Pressurized container 2a Opening 3 Seal tube (seal member) 4 Upper jig 5 Lower jig 6 Liquid crystal cell 6a Liquid crystal injection port
───────────────────────────────────────────────────── フロントページの続き (72)発明者 郡 孝文 東京都大田区雪谷大塚町１番７号 アルプ ス電気株式会社内 (72)発明者 大平 英明 東京都大田区雪谷大塚町１番７号 アルプ ス電気株式会社内 Ｆターム(参考） 2H089 NA24 NA25 NA29 NA32 NA33 NA35 NA38 NA44 NA48 NA53 NA60 QA12 QA14 QA15 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Takafumi Gun, 1-7 Yukitani Otsukacho, Ota-ku, Tokyo Alps Electric Co., Ltd. (72) Hideaki Ohira 1-7 Yukitani Otsukacho, Ota-ku, Tokyo Alp F-term (reference) 2H089 NA24 NA25 NA29 NA32 NA33 NA35 NA38 NA44 NA48 NA53 NA60 QA12 QA14 QA15
Claims (2)
な液晶を液晶注入口から排出させて液晶セルを構成する
ガラス基板間の間隔を一定の値に調整するとともに前記
液晶注入口を封止剤で封止する液晶セル封止装置であっ
て、 液晶セルを収容し、該液晶セルの液晶注入口周辺を露出
させるための開口部を有する加圧容器と、 前記開口部を横切るように前記液晶セルを保持した状態
で前記開口部を塞ぐとともに前記液晶セルの液晶注入口
周辺を露出させるように設置され、前記加圧容器内の気
密状態を保持するシール部材とを具備してなり、 前記シール部材を封止剤硬化に使用する紫外光の透過を
防ぐように着色したことを特徴とする液晶セル封止装
置。1. A liquid crystal cell is pressurized to discharge excess liquid crystal in the cell from a liquid crystal injection port to adjust a distance between glass substrates constituting the liquid crystal cell to a constant value and to seal the liquid crystal injection port. A liquid crystal cell sealing device for sealing with a stopper, comprising: a pressurized container containing a liquid crystal cell and having an opening for exposing a periphery of a liquid crystal injection port of the liquid crystal cell; and A sealing member that is installed so as to close the opening while holding the liquid crystal cell and to expose the periphery of the liquid crystal injection port of the liquid crystal cell, and that maintains an airtight state in the pressurized container, A sealing device for a liquid crystal cell, wherein the sealing member is colored so as to prevent transmission of ultraviolet light used for curing a sealant.
ら構成されており、 前記シール部材を挟み込むように設けられ、前記シール
部材を前記加圧容器内側へ湾曲させることで前記開口部
から前記液晶セルの液晶注入口周辺を露出させる治具を
具備することを特徴とする請求項１記載の液晶セル封止
装置。2. The liquid crystal from the opening by bending the seal member inward of the pressurized container, wherein the seal member is made of an elastically deformable material, and is provided so as to sandwich the seal member. 2. The liquid crystal cell sealing device according to claim 1, further comprising a jig for exposing a periphery of a liquid crystal injection port of the cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10170375A JP2000010102A (en) | 1998-06-17 | 1998-06-17 | Liquid crystal cell end-sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10170375A JP2000010102A (en) | 1998-06-17 | 1998-06-17 | Liquid crystal cell end-sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000010102A true JP2000010102A (en) | 2000-01-14 |
Family
ID=15903782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10170375A Ceased JP2000010102A (en) | 1998-06-17 | 1998-06-17 | Liquid crystal cell end-sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000010102A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6914661B2 (en) | 2000-09-07 | 2005-07-05 | Seiko Epson Corporation | Cell gap adjusting device, pressurizing seal device and liquid crystal display device manufacturing method |
-
1998
- 1998-06-17 JP JP10170375A patent/JP2000010102A/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6914661B2 (en) | 2000-09-07 | 2005-07-05 | Seiko Epson Corporation | Cell gap adjusting device, pressurizing seal device and liquid crystal display device manufacturing method |
| CN1316292C (en) * | 2000-09-07 | 2007-05-16 | 精工爱普生株式会社 | Liquid crystal cell gap adjusting device, pressure packaged device and manufacture method for liquid crystal display |
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