JPH1068964A - Liquid crystal display device - Google Patents

Liquid crystal display device

Info

Publication number
JPH1068964A
JPH1068964A JP22910396A JP22910396A JPH1068964A JP H1068964 A JPH1068964 A JP H1068964A JP 22910396 A JP22910396 A JP 22910396A JP 22910396 A JP22910396 A JP 22910396A JP H1068964 A JPH1068964 A JP H1068964A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal display
printed circuit
long
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
Application number
JP22910396A
Other languages
Japanese (ja)
Inventor
Kenichi Komurasaki
賢一 小紫
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP22910396A priority Critical patent/JPH1068964A/en
Publication of JPH1068964A publication Critical patent/JPH1068964A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/142—Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/36—Assembling printed circuits with other printed circuits
    • H05K3/361—Assembling flexible printed circuits with other printed circuits

Landscapes

  • Liquid Crystal (AREA)

Abstract

PROBLEM TO BE SOLVED: To make it possible to decrease the stresses on the junctures between the glass substrates and long-size printed circuit boards of a liquid crystal display panel by constituting the device of the specific liquid crystal display panel and the long-size printed circuit boards, dividing the long-size printed circuit boards to >=2 along the longitudinal direction thereof. SOLUTION: The liquid crystal display panel is constituted by sealing liquid crystals between the one glass substrate 2 and the other glass substrate 3 and arranging a liquid crystal display section 4 therebetween. The other glass substrate 3 is rectangular in shape. The long side size thereof is 336mm and the short side size 243mm. The short side is provided with the printed circuit board 16 on the common side of the long size and the long side with the printed circuit boards 17, 18 on the segment side of the long size in juxtaposition. The respective printed circuit boards 16 to 18 are composed of dividers bisecting these printed circuit boards over the longitudinal direction. Then, even if the printed circuit board 16 to 18 and the other glass substrate 3 thermally expand, the stress addition occurring on the difference in thermal expansion between both is lessened and the destruction of the junctures of TABs 9 does not arise any more.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は長尺状プリント基板
が実装された液晶表示装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device having a long printed circuit board mounted thereon.

【０００２】[0002]

【従来の技術】図５と図６は従来のＴＮ型またはＳＴＮ
型の単純マトリックスタイプならびにアクティブマトリ
ックスタイプなどの液晶表示装置１であり、図５は平面
図、図６は図５中の切断面線Ｘ−Ｘによる断面図であ
る。2. Description of the Related Art FIGS. 5 and 6 show a conventional TN type or STN.
FIG. 5 is a plan view, and FIG. 6 is a cross-sectional view taken along line XX of FIG. 5.

【０００３】２は一方ガラス基板、３は他方ガラス基板
であり、両者ガラス基板間に液晶が封入され、これによ
って液晶表示部４が配された液晶表示パネル５を構成す
る。そして、他方ガラス基板３には３個の長尺状プリン
ト基板が並設され、６はコモン側のプリント基板、７、
８はセグメント側のプリント基板である。各プリント基
板６、７、８と、他方ガラス基板３とにまたがってＴＡ
Ｂ９が配列されている。このＴＡＢ９はＣｕリードが形
成されたポリイミドテープ１０（以下、ＰＩテープ１
０）の上に駆動用のＩＣチップ１１が搭載されたもので
あって、ＴＡＢ９は半田や異方性導電膜などの導電性の
接着剤１２を介して双方の基板に接着固定され、通常、
他方ガラス基板３とは異方性導電膜で、プリント基板
６、７、８とは半田でもって接着されている。また、１
３はジャンパーケーブルである。[0003] Reference numeral 2 denotes one glass substrate, and 3 denotes another glass substrate. Liquid crystal is sealed between the two glass substrates, thereby constituting a liquid crystal display panel 5 in which a liquid crystal display unit 4 is arranged. On the other hand, three long printed boards are juxtaposed on the glass substrate 3, and 6 is a common-side printed board, 7,
8 is a printed circuit board on the segment side. TA over each printed circuit board 6, 7, 8 and the other glass substrate 3
B9 is arranged. This TAB 9 is a polyimide tape 10 on which Cu leads are formed (hereinafter, PI tape 1).
0) on which a driving IC chip 11 is mounted, and the TAB 9 is bonded and fixed to both substrates via a conductive adhesive 12 such as solder or an anisotropic conductive film.
On the other hand, the glass substrate 3 is an anisotropic conductive film, and the printed substrates 6, 7, and 8 are bonded with solder. Also, 1
3 is a jumper cable.

【０００４】[0004]

【発明が解決しようとする問題点】しかしながら、他方
ガラス基板３には長尺状プリント基板６、７、８を並設
していることで、環境温度が上昇して双方の基板が熱膨
張すると、両者の熱膨張差に起因してＴＡＢ９の接続部
である接着剤１２付近に応力が加わり、これによって、
液晶表示パネル５が大型化すると、この応力が増大し、
かかる接続部が破壊されるという問題点がある。However, since the long printed boards 6, 7, 8 are juxtaposed on the glass substrate 3, the environmental temperature rises and the two substrates are thermally expanded. Due to the difference in thermal expansion between the two, a stress is applied to the vicinity of the adhesive 12, which is the connection portion of the TAB 9, and thereby,
As the size of the liquid crystal display panel 5 increases, this stress increases,
There is a problem that such a connection portion is broken.

【０００５】この問題点を解決するために長尺状プリン
ト基板６、７、８を新神戸電気製ＥＭ−４５５Ａ１など
の低い熱膨張率の材料で構成することが提案され、これ
によって接続部に対する応力がある程度まで低減される
が、近年のさらなる大型化傾向により未だ満足し得るま
でに熱膨張差が吸収できなくなっている。しかも、この
ような低熱膨張率材のプリント基板は、それ自体の材料
によってコストが増大するという問題点もある。In order to solve this problem, it has been proposed that the long printed circuit boards 6, 7, and 8 be made of a material having a low coefficient of thermal expansion such as EM-455A1 manufactured by Shin-Kobe Electric Co., Ltd. Is reduced to some extent, but due to the tendency to further increase in size in recent years, the difference in thermal expansion cannot be absorbed until it is still satisfactory. In addition, there is a problem that the cost of such a printed circuit board made of a material having a low coefficient of thermal expansion increases due to its own material.

【０００６】したがって、本発明の目的は叙上の問題点
を解決して、液晶表示パネルのガラス基板と、長尺状プ
リント基板との接続部に対する応力を低減し、これによ
って高品質かつ高信頼性ならびに低コストの液晶表示装
置を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems and reduce stress on a connection portion between a glass substrate of a liquid crystal display panel and a long printed circuit board, thereby achieving high quality and high reliability. An object of the present invention is to provide a liquid crystal display device having low cost and low cost.

【０００７】[0007]

【課題を解決するための手段】本発明の液晶表示装置
は、一辺の長さが１００ｍｍ以上の辺を有する矩形状も
しくは正方形状のガラス基板上に液晶表示部を設けて成
る液晶表示パネルと、ガラス基板の辺に沿って並設され
た長尺状プリント基板とから構成され、前記長尺状プリ
ント基板はその長手方向に沿って二つ以上に分割されて
いることを特徴とする。A liquid crystal display device according to the present invention comprises: a liquid crystal display panel having a liquid crystal display portion provided on a rectangular or square glass substrate having a side of 100 mm or more in length; And a long printed board arranged side by side along the side of the glass substrate, wherein the long printed board is divided into two or more along its longitudinal direction.

【０００８】[0008]

【発明の実施の形態】図１と図２により本発明の液晶表
示装置１４を、図３と図４により他方の液晶表示装置１
５を説明する。図１は平面図、図２は図１中の切断面線
Ｙ−Ｙによる断面図であり、図３は平面図、図４は図３
中の切断面線Ｚ−Ｚによる断面図である。なお、図５と
図６に示す従来の液晶表示装置１と同一箇所には同一符
号を付す。1 and 2 show a liquid crystal display device 14 of the present invention, and FIGS. 3 and 4 show another liquid crystal display device 1 of the present invention.
5 will be described. 1 is a plan view, FIG. 2 is a cross-sectional view taken along the line Y-Y in FIG. 1, FIG. 3 is a plan view, and FIG.
It is sectional drawing by the cut surface line ZZ in a middle. The same parts as those in the conventional liquid crystal display device 1 shown in FIGS. 5 and 6 are denoted by the same reference numerals.

【０００９】まず液晶表示装置１４によれば、一方ガラ
ス基板２と他方ガラス基板３との間に液晶が封入され
て、液晶表示部４が配された液晶表示パネル５（パネル
サイズ１５インチ）が構成され、また、他方ガラス基板
３は矩形状であって、長辺寸法は３３６ｍｍ、短辺寸法
は２４３ｍｍであり、この短辺側に長尺状のコモン側の
プリント基板１６が、長辺側に長尺状のセグメント側の
プリント基板１７、１８が並設されている。各プリント
基板１６、１７、１８は、長手方向にわたって二つに横
断分割した分割子により成している。これら分割子をプ
リント基板１６に対してａ、ｂ、プリント基板１７に対
してｃ、ｄ、そして、プリント基板１８に対してｅ、ｆ
と表記する。First, according to the liquid crystal display device 14, liquid crystal is sealed between the one glass substrate 2 and the other glass substrate 3, and a liquid crystal display panel 5 (panel size 15 inches) on which a liquid crystal display unit 4 is disposed is provided. On the other hand, the glass substrate 3 has a rectangular shape, the long side dimension is 336 mm, and the short side dimension is 243 mm. The long segment side printed circuit boards 17 and 18 are arranged side by side. Each of the printed circuit boards 16, 17, 18 is constituted by a divider that is divided into two in the longitudinal direction. These dividers are a and b for the printed circuit board 16, c and d for the printed circuit board 17, and e and f for the printed circuit board 18.
Notation.

【００１０】各プリント基板１６、１７、１８はたとえ
ばＦＲ−４などから成り、その基板と、他方ガラス基板
３とにまたがってＴＡＢ９が配列されている。そして、
これら各プリント基板の分割子ａ〜ｆをジャンパーケー
ブル１３でもって接続している。Each of the printed boards 16, 17, 18 is made of, for example, FR-4 or the like, and TABs 9 are arranged over the board and the other glass substrate 3. And
The dividers a to f of these printed circuit boards are connected by jumper cables 13.

【００１１】かくして上記構成の液晶表示装置１４にお
いては、プリント基板１６、１７、１８を、長手方向に
わたって二つに横断分割した分割子により成しているの
で、これらプリント基板と他方ガラス基板３とが熱膨張
しても、両者の熱膨張差に起因する応力付加が減少し、
これによって、液晶表示パネル５が大型化しても、ＴＡ
Ｂ９の接続部である接着剤１２付近が破壊されなくな
る。Thus, in the liquid crystal display device 14 having the above structure, the printed boards 16, 17, and 18 are formed by the two transversely-divided dividers in the longitudinal direction. Even if is thermally expanded, the stress applied due to the difference in thermal expansion between the two is reduced,
As a result, even if the liquid crystal display panel 5 becomes large,
The vicinity of the adhesive 12 which is the connection portion of B9 is not broken.

【００１２】本発明は、辺長が１００ｍｍ以上である他
方ガラス基板３と、この辺に並設するプリント基板１
６、１７、１８との関係を知見したものであって、たと
えばＦＲ−４から成るプリント基板（線膨張係数α＝
１．７×１０-5／℃と、線膨張係数αが８×１０-6／℃
であるガラス基板において、７０℃温度変化した場合に
は、両者基板間の熱膨張差ΔＬは０．１０５８ｍｍであ
る。According to the present invention, a glass substrate 3 having a side length of 100 mm or more and a printed circuit board 1
6, 17 and 18 are obtained, and for example, a printed circuit board made of FR-4 (linear expansion coefficient α =
1.7 × 10 −5 / ° C. and a coefficient of linear expansion α of 8 × 10 −6 / ° C.
When the temperature of the glass substrate changes by 70 ° C., the thermal expansion difference ΔL between the two substrates is 0.1058 mm.

【００１３】これに対する従来の液晶表示装置１では、
二つに横断分割した以外の構成をまったく同じにする
と、その熱膨張差ΔＬは０．２１１６ｍｍである。ちな
みに、パネルサイズが１０．４インチの液晶表示パネル
５の従来の液晶表示装置１では、熱膨張差ΔＬは０．１
５６２ｍｍである。On the other hand, in the conventional liquid crystal display device 1,
If the configuration other than the two transverse divisions is exactly the same, the thermal expansion difference ΔL is 0.2116 mm. Incidentally, in the conventional liquid crystal display device 1 of the liquid crystal display panel 5 having a panel size of 10.4 inches, the thermal expansion difference ΔL is 0.1
562 mm.

【００１４】以上の通り、本発明の液晶表示装置１４に
よれば、二つに横断分割したプリント基板１６、１７、
１８を設けているので、ガラス基板とプリント基板との
熱膨張差ΔＬが顕著に小さくなっていることがわかる。As described above, according to the liquid crystal display device 14 of the present invention, the printed boards 16, 17 divided into two sections
18, the thermal expansion difference ΔL between the glass substrate and the printed board is significantly reduced.

【００１５】次に本発明を液晶表示装置１５によって説
明する。上記液晶表示装置１４においては、駆動用のＩ
Ｃチップ１１がＴＡＢ９上に搭載されているのに対し
て、この液晶表示装置１５では、駆動用のＩＣチップ１
１が他方ガラス基板３上に配置された、いわゆるＣＯＧ
（Ｃｈｉｐ−ｏｎ−Ｇｌａｓｓ）方式である。そして、
駆動用のＩＣチップ１１の一方の端子は各プリント基板
１６、１７、１８の端子とＡｕ線などでワイヤーボンデ
ィング接続されている。また、これら各プリント基板の
分割子ａ〜ｆもボンディング用のワイヤ１９でもって接
続している。Next, the present invention will be described with reference to a liquid crystal display device 15. In the liquid crystal display device 14, the driving I
While the C chip 11 is mounted on the TAB 9, the liquid crystal display device 15 has the driving IC chip 1
So-called COG 1 is disposed on the other glass substrate 3
(Chip-on-Glass) method. And
One terminal of the driving IC chip 11 is wire-bonded to the terminal of each of the printed circuit boards 16, 17, and 18 by an Au wire or the like. The dividers a to f of these printed circuit boards are also connected by bonding wires 19.

【００１６】このようにワイヤーボンディング接続され
た場合であっても、二つに横断分割したプリント基板１
６、１７、１８を設けたことで、液晶表示パネル５が大
型化しても、ワイヤーボンディングによる接続部が破壊
されなくなる。Even in the case of wire bonding connection, the printed circuit board 1 divided into two sections
By providing 6, 17, and 18, even if the liquid crystal display panel 5 becomes large, the connection part by wire bonding will not be destroyed.

【００１７】なお、本発明は上記実施形態例に限定され
るものでなく、本発明の要旨を逸脱しない範囲内で種々
の変更や改善などは何ら差し支えない。たとえば、この
実施形態では、長尺状プリント基板を長手方向にわたっ
て二つに横断分割しているが、その他に三つあるいはそ
の以上に横断分割してもよい。The present invention is not limited to the above embodiment, and various changes and improvements may be made without departing from the scope of the present invention. For example, in this embodiment, the long printed board is divided into two in the longitudinal direction, but may be divided into three or more.

【００１８】[0018]

【発明の効果】以上の通り、本発明によれば、長尺状プ
リント基板を長手方向にわたって二つ以上に横断分割し
ているので、長尺状プリント基板とガラス基板とが熱膨
張しても、両者の熱膨張差に起因する応力付加が減少
し、これによって液晶表示パネルが大型化しても、接続
部が破壊されなくなり、その結果、高品質かつ高信頼性
ならびに低コストの液晶表示装置が提供できる。As described above, according to the present invention, since the long printed board is divided into two or more in the longitudinal direction, even if the long printed board and the glass substrate are thermally expanded. Therefore, the stress applied due to the difference in thermal expansion between the two is reduced, so that even if the liquid crystal display panel is enlarged, the connection portion is not broken, and as a result, a high quality, high reliability and low cost liquid crystal display device is obtained. Can be provided.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の液晶表示装置の平面図である。FIG. 1 is a plan view of a liquid crystal display device of the present invention.

【図２】本発明の液晶表示装置の要部断面図である。FIG. 2 is a sectional view of a main part of the liquid crystal display device of the present invention.

【図３】本発明の他の液晶表示装置の平面図である。FIG. 3 is a plan view of another liquid crystal display device of the present invention.

【図４】本発明の他の液晶表示装置の要部断面図であ
る。FIG. 4 is a sectional view of a main part of another liquid crystal display device of the present invention.

【図５】従来の液晶表示装置の平面図である。FIG. 5 is a plan view of a conventional liquid crystal display device.

【図６】従来の液晶表示装置の要部断面図である。FIG. 6 is a sectional view of a main part of a conventional liquid crystal display device.

【符号の説明】[Explanation of symbols]

２ 一方ガラス基板 ３ 他方ガラス基板 ４ 液晶表示部 ５ 液晶表示パネル ６、７、８ プリント基板 ９ ＴＡＢ １３ ジャンパーケーブル １４、１５ 液晶表示装置 １６、１７、１８ プリント基板 １９ ボンディング用ワイヤ ａ〜ｆ 分割子 2 One glass substrate 3 The other glass substrate 4 Liquid crystal display unit 5 Liquid crystal display panel 6, 7, 8 Printed circuit board 9 TAB 13 Jumper cable 14, 15 Liquid crystal display device 16, 17, 18 Printed circuit board 19 Bonding wire a to f Divider

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 一辺の長さが１００ｍｍ以上の辺を有す
る矩形状もしくは正方形状のガラス基板上に液晶表示部
を設けて成る液晶表示パネルと、該ガラス基板の辺に沿
って並設された長尺状プリント基板とから構成され、前
記長尺状プリント基板はその長手方向に沿って二つ以上
に分割されていることを特徴とする液晶表示装置。1. A liquid crystal display panel having a liquid crystal display portion provided on a rectangular or square glass substrate having a side having a side length of 100 mm or more, and juxtaposed along the side of the glass substrate. And a long printed circuit board, wherein the long printed circuit board is divided into two or more along a longitudinal direction thereof.
JP22910396A 1996-08-29 1996-08-29 Liquid crystal display device Pending JPH1068964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22910396A JPH1068964A (en) 1996-08-29 1996-08-29 Liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22910396A JPH1068964A (en) 1996-08-29 1996-08-29 Liquid crystal display device

Publications (1)

Publication Number Publication Date
JPH1068964A true JPH1068964A (en) 1998-03-10

Family

ID=16886794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22910396A Pending JPH1068964A (en) 1996-08-29 1996-08-29 Liquid crystal display device

Country Status (1)

Country Link
JP (1) JPH1068964A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990073703A (en) * 1998-03-02 1999-10-05 윤종용 LCD Display Module
EP1079357A1 (en) * 1999-02-25 2001-02-28 Matsushita Electric Industrial Co., Ltd. Display panel
US7129999B2 (en) 1998-06-29 2006-10-31 Hitachi, Ltd. Liquid crystal display device
WO2016104358A1 (en) * 2014-12-25 2016-06-30 シャープ株式会社 Display device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990073703A (en) * 1998-03-02 1999-10-05 윤종용 LCD Display Module
US7129999B2 (en) 1998-06-29 2006-10-31 Hitachi, Ltd. Liquid crystal display device
EP1079357A1 (en) * 1999-02-25 2001-02-28 Matsushita Electric Industrial Co., Ltd. Display panel
EP1079357A4 (en) * 1999-02-25 2007-07-04 Toshiba Matsushita Display Tec Display panel
WO2016104358A1 (en) * 2014-12-25 2016-06-30 シャープ株式会社 Display device

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