JP2008122523A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
JP2008122523A
JP2008122523A JP2006304123A JP2006304123A JP2008122523A JP 2008122523 A JP2008122523 A JP 2008122523A JP 2006304123 A JP2006304123 A JP 2006304123A JP 2006304123 A JP2006304123 A JP 2006304123A JP 2008122523 A JP2008122523 A JP 2008122523A
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liquid crystal
display device
crystal display
fpc
shelf
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JP2006304123A
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Japanese (ja)
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Hiroshi Kubota
博士 久保田
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Japan Display Central Inc
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Toshiba Matsushita Display Technology Co Ltd
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Priority to JP2006304123A priority Critical patent/JP2008122523A/en
Publication of JP2008122523A publication Critical patent/JP2008122523A/en
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  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which the on-board strength of an FPC is enhanced in the case of mounting the FPC on the shelf section of a liquid crystal module. <P>SOLUTION: The FPC 14 is attached to the shelf section 20 of the liquid crystal module 12 so that the leader 34 of the constricted part 26 provided in the FPC 14 is positioned more inside than the edge of the shelf section 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、液晶モジュールの棚部にフレキシブル配線基板（以下、ＦＰＣという）を取り付けた液晶表示装置に関するものである。   The present invention relates to a liquid crystal display device in which a flexible wiring board (hereinafter referred to as FPC) is attached to a shelf of a liquid crystal module.

最近の液晶表示装置は、自動車のカーナビゲーション、携帯電話等にも搭載されている。このような液晶表示装置は、図６に示すように、液晶モジュール１００の棚部１０２にＦＰＣ１０４が異方性導電膜（以下、ＡＣＦという）によって取り付けられている。   Recent liquid crystal display devices are also installed in car navigation systems, mobile phones and the like of automobiles. In such a liquid crystal display device, as shown in FIG. 6, the FPC 104 is attached to the shelf 102 of the liquid crystal module 100 by an anisotropic conductive film (hereinafter referred to as ACF).

また、ＦＰＣ１０４を液晶モジュール１００の裏側に折曲し易くするために、その途中にくびれ部を有したＦＰＣ１０４を取り付ける場合がある（例えば、特許文献１、特許文献２参照）。
特開２００３−２４１２２０号公報の図２９ 特開２００６−６６７７２公報 Moreover, in order to make it easy to bend FPC104 to the back side of the liquid crystal module 100, the FPC104 which has a constriction part in the middle may be attached (for example, refer patent document 1, patent document 2).
FIG. 29 of JP2003-241220A JP 2006-66772 A

ところでカーナビゲーション、携帯電話等に搭載される液晶表示装置においては、移動や持ち運びの際の激しい振動に耐える必要があるが、図４に示すような棚部１０２にＦＰＣ１０４を取り付けた構造であると、ＦＰＣ１０４に左右の応力が加えられて、この実装部分でのねじれ強度が低いという問題点がある。   By the way, in a liquid crystal display device mounted on a car navigation system, a mobile phone or the like, it is necessary to withstand intense vibration during movement and carrying, but the structure is such that the FPC 104 is attached to the shelf 102 as shown in FIG. There is a problem in that left and right stress is applied to the FPC 104 and the torsional strength at the mounting portion is low.

そこで、本発明は上記問題点に鑑み、液晶モジュールの棚部にＦＰＣを実装する場合において、その実装強度を向上させた液晶表示装置を提供する。   Therefore, in view of the above problems, the present invention provides a liquid crystal display device having improved mounting strength when an FPC is mounted on a shelf of a liquid crystal module.

本発明は、アレイ基板と対向基板とによって液晶層を挟んだ液晶モジュールと、前記対向基板の縁部と対向する位置より外側に突出した前記アレイ基板の棚部に取り付けられたフレキシブル配線基板と、を有する液晶表示装置において、前記フレキシブル配線基板の両側部に一対のくびれ部を有し、前記一対のくびれ部のそれぞれの一端部が前記棚部の縁部より内側に固定されている、液晶表示装置である。   The present invention includes a liquid crystal module having a liquid crystal layer sandwiched between an array substrate and a counter substrate, a flexible wiring board attached to a shelf portion of the array substrate that protrudes outward from a position facing an edge of the counter substrate, A liquid crystal display device having a pair of constricted portions on both sides of the flexible wiring board, wherein one end of each of the pair of constricted portions is fixed to the inner side of the edge of the shelf. Device.

本発明によれば、棚部の縁部より内側に、くびれ部の一端部が配置されているため、ねじれ強度を向上させることができる。   According to the present invention, the one end portion of the constricted portion is disposed on the inner side of the edge portion of the shelf portion, so that the torsional strength can be improved.

以下、本発明の第１の実施形態の液晶表示装置１０について図１と図２に基づいて説明する。   Hereinafter, a liquid crystal display device 10 according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

本実施形態の液晶表示装置１０は、自動車のカーナビゲーション、携帯電話等に搭載されるものであって、２〜６インチの大きさである。   The liquid crystal display device 10 of the present embodiment is mounted on a car navigation system, a mobile phone, etc. of an automobile and has a size of 2 to 6 inches.

液晶表示装置１０は、液晶モジュール１２とＦＰＣ１４を有している。液晶モジュール１２は、ガラス板よりなるアレイ基板１６に液晶層を介して対向基板１８を貼り付けたものであり、アレイ基板１６の大きさが対向基板１８よりも大きく、棚部２０を有している。この棚部２０には、液晶モジュール１２の各表示画素からの引き出し線２２が配線されている。この各引き出し線２２の先端部には端子がそれぞれ設けられている。この棚部２０には、前記したＦＰＣ１４がＡＣＦ２４によって固定、かつ、前記端子と電気的に接続される。   The liquid crystal display device 10 includes a liquid crystal module 12 and an FPC 14. The liquid crystal module 12 is obtained by attaching a counter substrate 18 to an array substrate 16 made of a glass plate via a liquid crystal layer. The size of the array substrate 16 is larger than that of the counter substrate 18 and includes a shelf portion 20. Yes. On the shelf 20, lead lines 22 from the display pixels of the liquid crystal module 12 are wired. A terminal is provided at the leading end of each lead wire 22. The FPC 14 is fixed to the shelf 20 by the ACF 24 and is electrically connected to the terminal.

ＦＰＣ１４には、複数本の導通パターン４０が配線され、また、液晶表示装置１０の駆動回路の一部を構成するＩＣチップ４２が搭載されている。また、ＦＰＣ１４は、その途中にくびれ部２６を有している。このくびれ部２６は、図２に示すように、ＦＰＣ１４の内側に向かって傾斜した第１側辺２８と、この第１側辺２８からＦＰＣ１４の突出方向に延びた第２側辺と、第２側辺３０からＦＰＣ１４の外側に広がるように傾斜した第３側辺３２を有している。そして、両側のくびれ部２６，２６は相対向するように同じ位置に形成されている。   A plurality of conductive patterns 40 are wired on the FPC 14, and an IC chip 42 that constitutes a part of the drive circuit of the liquid crystal display device 10 is mounted. Further, the FPC 14 has a constricted portion 26 in the middle thereof. As shown in FIG. 2, the constricted portion 26 includes a first side 28 inclined toward the inside of the FPC 14, a second side extending from the first side 28 in the protruding direction of the FPC 14, and a second side The third side 32 is inclined so as to spread from the side 30 to the outside of the FPC 14. The constricted portions 26 on both sides are formed at the same position so as to face each other.

ＦＰＣ１４を棚部２０に取り付ける場合には、図２に示すように第１側辺２８の一端部である始端３４が棚部２０の縁部より内側に固定され、且つ、第１側辺２８と第２側辺３０の屈曲部３６が棚部２０の縁部より内側に固定されている。   When the FPC 14 is attached to the shelf 20, the start end 34, which is one end of the first side 28, is fixed inside the edge of the shelf 20, as shown in FIG. The bent portion 36 of the second side 30 is fixed inside the edge of the shelf 20.

このようにくびれ部２６の第１側辺２８の始端を棚部２０の内側に取り付けることにより、カーナビゲーションの振動や携帯電話の持ち運び等によってねじれ方向の応力を受けた場合に、棚部２０の縁部の強度で保持することができ、ねじれ強度を向上させることができる。   In this way, by attaching the start end of the first side 28 of the constricted portion 26 to the inside of the shelf portion 20, when subjected to stress in the twisting direction due to vibration of car navigation, carrying of a mobile phone, etc., The edge strength can be maintained, and the torsional strength can be improved.

次に、従来技術のＦＰＣ１０４と第１の実施形態のＦＰＣ１４とのねじれ強度について測定した結果について図４及び図５に基づいて説明する。   Next, the results of measuring the torsional strength between the FPC 104 of the prior art and the FPC 14 of the first embodiment will be described with reference to FIGS.

ＦＰＣ１４，１０４をそれぞれ棚部２０の縁部に対し４５°折り曲げ垂直に引き剥がすように力を加えた場合に、図４に示す第１の実施形態のＦＰＣ１４では１．２ｋｇｆの強度まで耐えることができたが、図５に示す従来のＦＰＣ１０４では０．９ｋｇｆしか耐えることができなかった。即ち、第１の実施形態の構造にすることにより、０．３ｋｇｆを向上させることができた。   When a force is applied so that the FPCs 14 and 104 are bent at 45 ° with respect to the edge of the shelf 20 and peeled vertically, the FPC 14 of the first embodiment shown in FIG. 4 can withstand a strength of 1.2 kgf. However, the conventional FPC 104 shown in FIG. 5 could only withstand 0.9 kgf. That is, by using the structure of the first embodiment, 0.3 kgf could be improved.

なお、特許文献１のＦＰＣもくびれ部を有しているが、くびれ部の始端が棚部の縁部より外側にあるため、図５に示す従来の実験結果と同じ強度しか有さない。   In addition, although FPC of patent document 1 also has a constriction part, since the starting end of a constriction part exists outside the edge part of a shelf part, it has only the same intensity | strength as the conventional experimental result shown in FIG.

次に、第２の実施形態の液晶表示装置１０について図３に基づいて説明する。   Next, the liquid crystal display device 10 of the second embodiment will be described with reference to FIG.

第１の実施形態ではＦＰＣ１４をＡＣＦ２４によってのみ固定したが、これに加えてＦＰＣ１４のくびれ部２６を固い合成樹脂系の接着剤で固める。即ち、相対向するくびれ部２６，２６の第１側辺２８及び第２側辺３０の位置を棚部２０の縁部に沿って接着剤３８によって固定する。   In the first embodiment, the FPC 14 is fixed only by the ACF 24. In addition to this, the constricted portion 26 of the FPC 14 is hardened with a hard synthetic resin adhesive. That is, the positions of the first side 28 and the second side 30 of the constricted portions 26, 26 facing each other are fixed by the adhesive 38 along the edge of the shelf 20.

これによって、くびれ部２６の強度をより向上させ、ねじれ負荷でのくびれ部２６に掛かる応力を分散した構造にしてもよい。   Thus, the strength of the constricted portion 26 may be further improved, and the stress applied to the constricted portion 26 under a torsional load may be dispersed.

本発明の第１の実施形態の液晶表示装置の斜視図である。1 is a perspective view of a liquid crystal display device according to a first embodiment of the present invention. 同じく液晶表示装置の平面図である。It is a top view of a liquid crystal display device similarly. 第２の実施形態の液晶表示装置の斜視図である。It is a perspective view of the liquid crystal display device of 2nd Embodiment. 第１の実施形態のＦＰＣを引き上げた状態の斜視図である。It is a perspective view of the state where FPC of a 1st embodiment was pulled up. 従来技術のＦＰＣを引き上げた状態の斜視図である。It is a perspective view in the state where FPC of the prior art was pulled up. 従来の液晶表示装置の斜視図である。It is a perspective view of the conventional liquid crystal display device.

符号の説明Explanation of symbols

１０ 液晶表示装置
１２ 液晶モジュール
１４ ＦＰＣ
１６ アレイ基板
１８ 対向基板
２０ 棚部
２６ くびれ部
２８ 第１側辺
３０ 第２側辺
３２ 第３側辺
３４ 始端
３６ 屈曲部 10 Liquid crystal display device 12 Liquid crystal module 14 FPC
16 array substrate 18 counter substrate 20 shelf 26 constricted portion 28 first side 30 second side 32 third side 34 start end 36 bent portion

Claims (3)

アレイ基板と対向基板とによって液晶層を挟んだ液晶モジュールと、
前記対向基板の縁部と対向する位置より外側に突出した前記アレイ基板の棚部に取り付けられたフレキシブル配線基板と、
を有する液晶表示装置において、
前記フレキシブル配線基板の両側部に一対のくびれ部を有し、
前記一対のくびれ部のそれぞれの一端部が前記棚部の縁部より内側に固定されている、
液晶表示装置。 A liquid crystal module having a liquid crystal layer sandwiched between an array substrate and a counter substrate;
A flexible wiring board attached to the shelf of the array substrate that protrudes outward from a position facing the edge of the counter substrate;
In a liquid crystal display device having
A pair of constricted portions on both sides of the flexible wiring board;
One end of each of the pair of constricted portions is fixed inside the edge of the shelf,
Liquid crystal display device. 前記一対のくびれ部のそれぞれは、前記くびれ部の前記一端部から前記フレキシブル配線基板の内側に向かって傾斜した第１側辺と、前記第１側辺から前記フレキシブル配線基板の突出方向に延びる第２側辺と、前記第２側辺から前記フレキシブル配線基板の外側に広がるように傾斜した第３側辺と、を含む、
請求項１記載の液晶表示装置。 Each of the pair of constricted portions includes a first side that is inclined from the one end of the constricted portion toward the inside of the flexible wiring board, and a first side extending from the first side in the protruding direction of the flexible wiring board. 2 side edges, and a third side edge inclined so as to spread from the second side edge to the outside of the flexible wiring board,
The liquid crystal display device according to claim 1. 前記一方のくびれ部の前記一端部から前記他方のくびれ部の前記一端部に向かって、前記フレキシブル配線基板の上面を接着剤で固めた、
請求項１記載の液晶表示装置。 From the one end portion of the one constricted portion toward the one end portion of the other constricted portion, the upper surface of the flexible wiring board is hardened with an adhesive,
The liquid crystal display device according to claim 1.
JP2006304123A 2006-11-09 2006-11-09 Liquid crystal display device Pending JP2008122523A (en)

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JP2006304123A JP2008122523A (en) 2006-11-09 2006-11-09 Liquid crystal display device

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JP2006304123A JP2008122523A (en) 2006-11-09 2006-11-09 Liquid crystal display device

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JP2006304123A Pending JP2008122523A (en) 2006-11-09 2006-11-09 Liquid crystal display device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170002845A (en) * 2015-06-30 2017-01-09 엘지디스플레이 주식회사 The display apparatus
WO2020071027A1 (en) * 2018-10-04 2020-04-09 日本航空電子工業株式会社 Method for producing mount structure of electronic component, mount structure of electronic component, electronic module and wiring sheet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170002845A (en) * 2015-06-30 2017-01-09 엘지디스플레이 주식회사 The display apparatus
KR102437166B1 (en) * 2015-06-30 2022-08-26 엘지디스플레이 주식회사 The display apparatus
WO2020071027A1 (en) * 2018-10-04 2020-04-09 日本航空電子工業株式会社 Method for producing mount structure of electronic component, mount structure of electronic component, electronic module and wiring sheet
TWI802759B (en) * 2018-10-04 2023-05-21 日商日本航空電子工業股份有限公司 Manufacturing method of mounting structure of electronic parts, mounting structure of electronic parts, electronic module, wiring sheet
US11881470B2 (en) 2018-10-04 2024-01-23 Japan Aviation Electronics Industry, Limited Method for manufacturing mounting structure for electronic component, mounting structure for electronic component, electronic module, and wiring sheet

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