JPH03175427A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH03175427A JPH03175427A JP31614389A JP31614389A JPH03175427A JP H03175427 A JPH03175427 A JP H03175427A JP 31614389 A JP31614389 A JP 31614389A JP 31614389 A JP31614389 A JP 31614389A JP H03175427 A JPH03175427 A JP H03175427A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display device
- diffusion plate
- rubber spacer
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 60
- 125000006850 spacer group Chemical group 0.000 claims abstract description 30
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000000470 constituent Substances 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、バックライトを備えた液晶表示装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a liquid crystal display device equipped with a backlight.
従来の技術
°近年、ワープロ等に使用されている液晶表示装置にか
いて、視認性を良くするためバックライトを備えたもの
が多くなってきた。なかでも装置の小型化、薄型化の要
求にともなって、導光板端面から光を導入し、液晶表示
範囲全体を照明するエツジライト式バックライトが多く
なっている。BACKGROUND ART In recent years, many liquid crystal display devices used in word processors and the like are equipped with backlights to improve visibility. In particular, with the demand for smaller and thinner devices, edge-light type backlights that introduce light from the end face of a light guide plate to illuminate the entire liquid crystal display area are becoming more common.
また、バックライトのための透過型液晶表示装置として
、液晶表示パネルのガラス表面電極とドライバー１をフ
レキシブル基板上に実装して形成した液晶駆動回路とを
接続するために異方性導電接着剤を用いたタブ接続方式
の液晶表示装置も多く用いられでいる。In addition, as a transmission type liquid crystal display device for backlight, an anisotropic conductive adhesive is used to connect the glass surface electrode of the liquid crystal display panel and the liquid crystal drive circuit formed by mounting the driver 1 on a flexible substrate. Liquid crystal display devices using the tab connection method are also widely used.
従来、このタブ接続方式の液晶表示装置を使用する場合
の一般的な構成を以下、第４図、第５図を参照しながら
説明する。A general configuration of a conventional tab connection type liquid crystal display device will be described below with reference to FIGS. 4 and 5.
第６図に示すように、液晶パネル１のガラス表面に形成
した電極と液晶駆動用ドライバＩＣ５を実装した７レキ
シプル基板２の電極との間に異方性導電接着剤３をはさ
んだ構成で接続されている。As shown in FIG. 6, an anisotropic conductive adhesive 3 is sandwiched between the electrodes formed on the glass surface of the liquid crystal panel 1 and the electrodes of the lexical board 2 on which the driver IC 5 for driving the liquid crystal is mounted. has been done.
そして、この異方性導電接着剤３の接層強度が十分に高
くないことからこの接続部分に適当な圧力Ｆで均等に加
圧し、保持する必要があり、そのためにゴムスペーサ４
を設置して平滑な構造部材６により加圧固定する構造で
ある。Since the contact strength of this anisotropic conductive adhesive 3 is not sufficiently high, it is necessary to apply and hold the connection part evenly with an appropriate pressure F, and for this purpose, a rubber spacer 4 is used.
This is a structure in which a smooth structural member 6 is used to press and fix the screws.
このゴムスペーサ４は第４図に示すように液晶パネル１
の周囲に分散して設けられた液晶駆動回路２の電極の位
置に対応して複数個用いられる。This rubber spacer 4 is attached to the liquid crystal panel 1 as shown in FIG.
A plurality of electrodes are used corresponding to the positions of the electrodes of the liquid crystal drive circuit 2 which are distributed around the periphery of the liquid crystal drive circuit 2.
このゴムスペーサ４には弱い貼着剤が塗付されて詮り、
組立時のゴムスペーサ４の位置の安定が図られている。This rubber spacer 4 is coated with a weak adhesive,
The position of the rubber spacer 4 during assembly is stabilized.
発明が解決しようとする課題
しかしながらこのような従来の液晶表示装置では、ゴム
スペーサ４を複数個、液晶パネルと液晶駆動回路基板上
に貼付ける必要があり、さらにこの回路基板接合部の位
置の違いにより、ゴムスペーサ４の厚み、長さの異なる
ものをそれぞれ用意する必要があった。Problems to be Solved by the Invention However, in such a conventional liquid crystal display device, it is necessary to attach a plurality of rubber spacers 4 on the liquid crystal panel and the liquid crystal drive circuit board, and in addition, there are differences in the positions of the circuit board joints. Therefore, it was necessary to prepare rubber spacers 4 having different thicknesses and lengths.
筐た、このゴムスペーサ４は、柔らかいシリコンゴム製
であることが多く、貼付時に伸びちぢみを訃こすため貼
付寸法精度がでにくいという問題を有していた。However, this rubber spacer 4 is often made of soft silicone rubber, and has a problem in that it is difficult to achieve dimensional accuracy when it is attached because it tends to stretch and shrink when attached.
さらに、第６図で示すように液晶パネルのコーナ一部で
は互いにとなシあうゴムスペーサ４の間にすきまが生じ
てかり、このすきまから液晶表示パネル１と平滑な構造
部材６との間に、表示に有害なほこり、ごみ等が入りや
すいという問題を有していた。Furthermore, as shown in FIG. 6, a gap is created between the rubber spacers 4 that fit together at some corners of the liquid crystal panel, and this gap creates a gap between the liquid crystal display panel 1 and the smooth structural member 6. However, there was a problem in that harmful dust, dirt, etc. could easily enter the display.
さらに、このゴムスペーサ４に塗付した接着剤は、回路
基板接合部の保護のため接着力を低く設定するため、組
立後ずれを生じるという問題もあった０
さらに、ゴムスペーサ４は通常半透明のシリコンゴム製
の場合が多く、前記ゴムスペーサ間のすき筐と共に、エ
ツジライト式バックライトの照明の光モレをかこし液晶
表示の品位をそこなう問題を有していた。Furthermore, since the adhesive applied to the rubber spacer 4 has a low adhesive strength to protect the circuit board joints, there is a problem in that it may shift after assembly.Furthermore, the rubber spacer 4 is usually semi-transparent. In many cases, the spacer is made of silicone rubber, and together with the space between the rubber spacers, there is a problem in that light leakage from the edge-light type backlight is caused, impairing the quality of the liquid crystal display.
本発明は、上記課題を解決するもので、安価で品質の安
定向上を実現する液晶表示装置を提供することを目的と
している。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a liquid crystal display device that is inexpensive and realizes stable improvement in quality.
課題を解決するための手段
本発明は上記目的を達成するために、液晶表示パネルと
液晶駆動回路基板とを、異方性導電接着剤によって接続
固定し、バックライトユニット構成部材である拡散板と
、液晶駆動回路基板との間にゴムスペーサを備え、前記
ゴムスペーサが拡散板側に固着させるとともに、液晶表
示パネルの表示範囲全周をとり囲み、かつ、１体につな
がった形状を与えてなるものである。さらに、ゴムスペ
ーサに黒あるいは黒暗色の不透明な着色を行なったもの
である。Means for Solving the Problems In order to achieve the above object, the present invention connects and fixes a liquid crystal display panel and a liquid crystal drive circuit board with an anisotropic conductive adhesive, and connects and fixes a liquid crystal display panel and a liquid crystal drive circuit board with a diffuser plate that is a constituent member of a backlight unit. , a rubber spacer is provided between the liquid crystal drive circuit board and the rubber spacer is fixed to the diffuser plate side, surrounds the entire display range of the liquid crystal display panel, and has a shape that is connected to the liquid crystal display panel. It is something. Furthermore, the rubber spacer is opaquely colored in black or dark black.
作用
本発明は上記した構成により、液晶表示パネルのバクク
ライトユニットに面した側の液晶駆動回路基板との接続
部の加圧を単一の部材で一括して行なえるとともに、従
来の貼付の位置寸法精度のばらつきをなくすことができ
る。さらに従来のとなりあうゴムスペーサ間のすきまが
ないため、はこシ、ゴミ等の挿入による液晶表示への悪
影響をなくすことができる。Effect of the Invention With the above-described configuration, the present invention can pressurize the connecting portion of the liquid crystal display panel with the liquid crystal drive circuit board on the side facing the back light unit all at once with a single member, and also can pressurize the connection part with the liquid crystal drive circuit board on the side facing the backlight unit of the liquid crystal display panel. Variations in dimensional accuracy can be eliminated. Furthermore, since there is no gap between conventional rubber spacers, it is possible to eliminate the harmful effects on the liquid crystal display caused by the insertion of dust, dust, etc.
さらに、ゴムスペーサを液晶駆動回路基板側に貼付ける
のに比較して、拡散板上に固着する場合、加圧あるいは
加熱により固着力を十分高めることができるため、組立
後の振動等でゴムスペーサがずれるという問題も解決す
ることができる。Furthermore, compared to pasting a rubber spacer on the LCD drive circuit board side, when adhering it to the diffuser plate, the adhesion force can be sufficiently increased by applying pressure or heating. The problem of misalignment can also be solved.
さらに、液晶表示範囲全周に、黒色の枠を形成すること
ができ、エツジライトの照明の光モレを防ぐことができ
る。Furthermore, a black frame can be formed around the entire circumference of the liquid crystal display area, and light leakage of the edge light illumination can be prevented.
実施例
以下、本発明の実施例について、第１図釦よび第２図、
第３図を参照しながら説明する。Examples Below, regarding examples of the present invention, buttons in Figure 1 and Figure 2,
This will be explained with reference to FIG.
第１図は本発明の第１の実施例にかける液晶表示装置の
分解斜視図であり、第１図に示すように液晶表示パネル
１の周囲に分散して設けられた、液晶駆動回路基板２の
接続部を、所定の圧力で一括して加圧できるように、か
つ、液晶表示範囲をとり囲む形状に、一体成形されたゴ
ムスペーサ４を、バックライトユニットの構成部材であ
る拡散板６に固着させている。FIG. 1 is an exploded perspective view of a liquid crystal display device according to a first embodiment of the present invention.As shown in FIG. An integrally molded rubber spacer 4 is attached to the diffuser plate 6, which is a component of the backlight unit, so that the connection parts of the connectors can be pressurized all at once with a predetermined pressure, and in a shape that surrounds the liquid crystal display area. It is fixed.
第２図は同実施例にふ・ける液晶表示装置の断面図であ
り、第２図に示すように、ゴムスペーサ４を固着した、
拡散板６は液晶表示パネル１と、エツジライト式バック
ライトユニットの導光板７０間にはさみと１れる形で、
フレーム８によって、キャビネット９に固定される。FIG. 2 is a sectional view of a liquid crystal display device according to the same embodiment, and as shown in FIG.
The diffusion plate 6 is sandwiched between the liquid crystal display panel 1 and the light guide plate 70 of the edge-light type backlight unit.
It is fixed to a cabinet 9 by a frame 8.
第３区は本発明の第２の実施例における液晶表示装置の
コーナ一部の斜視図であり、第３図に示すように、液晶
表示パネル１のコーナ一部では、ゴムスペーサ４は液晶
表示パネル１のガラスと拡散板６とのすき筐をなくすよ
うに、肉厚を変化させて一体につながっている。Section 3 is a perspective view of a corner part of the liquid crystal display device according to the second embodiment of the present invention. As shown in FIG. The glass of the panel 1 and the diffuser plate 6 are integrally connected by varying their wall thickness so as to eliminate the gap between the glass and the diffuser plate 6.
このように、ゴムスペーサを表示範囲をとり囲んだ形状
に一体成形し、拡散板上に固着することにより、ゴムス
ペーサの貼付寸法精度の向上と、すき渣からの異物の進
入を防ぐことができる０なお、ゴムスペーサを固着させ
る拡散板は液晶表示パネルを加圧する他の平板構造物で
もよい０発明の効果
以上の実施例から明らかなように、本発明によれば、ゴ
ムスペーサを、液晶表示範囲をとり囲んだ形状に拡散板
上に固着し、さらに表示部コーナ部にすき壕が生じない
形状に一体に成形することにより、組立精度の向上、安
定−と表示部への異物の進入のない液晶表示装置を提供
できる。In this way, by integrally molding the rubber spacer into a shape that surrounds the display area and fixing it on the diffuser plate, it is possible to improve the dimensional accuracy of pasting the rubber spacer and prevent foreign matter from entering from the gap. 0 Note that the diffusion plate to which the rubber spacer is fixed may be any other flat plate structure that pressurizes the liquid crystal display panel. By fixing it on the diffuser plate in a shape that surrounds the area, and integrally molding it in a shape that does not create a groove at the corner of the display, assembly accuracy is improved, stability is improved, and foreign objects are prevented from entering the display. It is possible to provide a liquid crystal display device that is
第１図は本発明の第１の実施例にかける液晶表示装置の
分解斜視図、第２図は同実施例に釦ける液晶表示装置の
断面図、第３図は本発明の第２の実施例に釦ける液晶表
示装置のコーナ一部の斜視図、第４図は従来の液晶表示
装置の分解斜視図、第６図は従来の液晶表示装置の構成
を示す斜視図、第６図は従来の液晶表示装置のコーナ一
部の斜視図である。
１・・・・・・液晶表示パネル、２・・・・・・液晶駆
動回路基板、３・・・・・・拡散板、４・・・・・・ゴ
ムスペーサ。FIG. 1 is an exploded perspective view of a liquid crystal display device according to a first embodiment of the present invention, FIG. 2 is a sectional view of a liquid crystal display device according to the same embodiment, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is an exploded perspective view of a conventional liquid crystal display device; FIG. 6 is a perspective view showing the configuration of a conventional liquid crystal display device; FIG. 6 is a conventional FIG. 2 is a perspective view of a part of a corner of the liquid crystal display device of FIG. DESCRIPTION OF SYMBOLS 1...Liquid crystal display panel, 2...Liquid crystal drive circuit board, 3...Diffusion plate, 4...Rubber spacer.
Claims (3)
導電接着剤によって接続固定し、バックライトユニット
構成部材である拡散板と、前記液晶駆動回路基板との間
で加圧される位置に設置されたゴムスペーサとから構成
され、前記ゴムスペーサが前記拡散板側に固着されるこ
とを特徴とする液晶表示装置。(1) A position where the liquid crystal display panel and the liquid crystal drive circuit board are connected and fixed using an anisotropic conductive adhesive, and pressure is applied between the diffusion plate, which is a component of the backlight unit, and the liquid crystal drive circuit board. 1. A liquid crystal display device comprising: a rubber spacer installed on the diffuser plate, the rubber spacer being fixed to the diffusion plate side.
とり囲み、かつ１体につながった形状をもつことを特徴
とする特許請求の範囲第１項記載の液晶表示装置。(2) The liquid crystal display device according to claim 1, wherein the rubber spacer surrounds the entire circumference of the display range of the liquid crystal display panel and has a shape that is connected to the liquid crystal display panel.
色をしたことを特徴とする特許請求の範囲第１項記載の
液晶表示装置。(3) The liquid crystal display device according to claim 1, wherein the rubber spacer is opaquely colored in black or dark black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31614389A JP2924025B2 (en) | 1989-12-05 | 1989-12-05 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31614389A JP2924025B2 (en) | 1989-12-05 | 1989-12-05 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03175427A true JPH03175427A (en) | 1991-07-30 |
| JP2924025B2 JP2924025B2 (en) | 1999-07-26 |
Family
ID=18073743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31614389A Expired - Fee Related JP2924025B2 (en) | 1989-12-05 | 1989-12-05 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2924025B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001154173A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic equipment provided with the same |
| JP2001154602A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic apparatus having the same |
| JP2001154174A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic equipment provided with the same |
| JP2001154603A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic apparatus having the same |
| JP2014157311A (en) * | 2013-02-18 | 2014-08-28 | Japan Display Inc | Display device and manufacturing method of display device |
-
1989
- 1989-12-05 JP JP31614389A patent/JP2924025B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001154173A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic equipment provided with the same |
| JP2001154602A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic apparatus having the same |
| JP2001154174A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic equipment provided with the same |
| JP2001154603A (en) * | 1999-11-26 | 2001-06-08 | Seiko Epson Corp | Display device and electronic apparatus having the same |
| JP2014157311A (en) * | 2013-02-18 | 2014-08-28 | Japan Display Inc | Display device and manufacturing method of display device |
| US9733507B2 (en) | 2013-02-18 | 2017-08-15 | Japan Display Inc. | Display device and manufacturing method of display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2924025B2 (en) | 1999-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |