JPS62278532A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS62278532A JPS62278532A JP61123035A JP12303586A JPS62278532A JP S62278532 A JPS62278532 A JP S62278532A JP 61123035 A JP61123035 A JP 61123035A JP 12303586 A JP12303586 A JP 12303586A JP S62278532 A JPS62278532 A JP S62278532A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- circuit board
- lighting device
- chassis
- 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
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〈産業上の利用分野〉
本発明は、照明装置を内蔵した液晶表示装置の構造に関
するものである。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to the structure of a liquid crystal display device incorporating a lighting device.
〈従来の技術〉
照明装置内蔵型の液晶表示装置は受光型表示体である液
晶表示パネルを用いた表示装置の欠点である暗所での表
示能力の低下を補う有用な装置である。特に十分な受光
量を必要とするフルカラー液晶表示装置においては、こ
の内蔵照明は必要不可欠な要素である。従来の照明装置
内蔵型液晶表示装置の構造を第４図に基いて説明する。<Prior Art> A liquid crystal display device with a built-in illumination device is a useful device that compensates for the deterioration in display ability in a dark place, which is a drawback of display devices using a liquid crystal display panel, which is a light-receiving display. Particularly in full-color liquid crystal display devices that require a sufficient amount of light to receive, this built-in illumination is an essential element. The structure of a conventional liquid crystal display device with a built-in lighting device will be explained based on FIG.
シャーシ５上面に液晶表示パネル１が配置されており、
蛍光燈６及び反射板７等から構成される装置が液晶表示
パネル１下方のシャーシ５内部に配置されている。そし
て液晶駆動回路を構成するフラットパッケージ型ＬＳ
Ｉ １ ０等の部子部品が搭載された回路基板３がシャ
ーシ５下面に配置されておシ、液晶表示パネル１の接続
電極と回路基板３の接続電極とが別の回路基板２にょシ
ミ気的に接続されている。液晶表示パネル１，回路基板
３とシャーシ５とはベゼル８等の手段洸よシ固定されて
いる。A liquid crystal display panel 1 is arranged on the top surface of the chassis 5,
A device comprising a fluorescent light 6, a reflector 7, etc. is arranged inside the chassis 5 below the liquid crystal display panel 1. And the flat package type LS that makes up the liquid crystal drive circuit.
The circuit board 3 on which components such as I10 are mounted is placed on the bottom surface of the chassis 5, and the connection electrodes of the liquid crystal display panel 1 and the connection electrodes of the circuit board 3 are different from each other on the circuit board 2. connected. The liquid crystal display panel 1, the circuit board 3, and the chassis 5 are fixed to each other by means such as a bezel 8.
く発明が解決しようとする問題点〉
上記液晶表示装置は、各構成部品を有効に一体化した構
造を有するが、フラットパッケージ型ＬＳＩを使用する
ため回路基板上での実装領域が大きくなシ、ｉ１１回路
基板として多数のスルーボールを有する大面積の基板が
必要であり装置コストが高い。 （２）回路基板を照明
装置の下部に配置する必要があり１表示装置の形状が厚
くなる。Problems to be Solved by the Invention The above liquid crystal display device has a structure in which each component is effectively integrated, but since it uses a flat package type LSI, the mounting area on the circuit board is large. As the i11 circuit board, a large-area board with a large number of through balls is required, and the device cost is high. (2) It is necessary to arrange the circuit board below the lighting device, which increases the thickness of the display device.
（３）照明装置を液晶表示パネルと回路基板とで挾み込
んだ構造のため照明装置から発生する熱の放散性が悪く
なり液晶表示装置の駆動に悪影響を及ぼす。 （４）照
明装置の蛍光燈に不良が生じた場合その交換が困難であ
る。 等の欠点を有する。(3) Due to the structure in which the lighting device is sandwiched between the liquid crystal display panel and the circuit board, the dissipation of heat generated from the lighting device is poor, which adversely affects the driving of the liquid crystal display device. (4) If a fluorescent lamp in a lighting device becomes defective, it is difficult to replace it. It has the following disadvantages.
〈発明の目的〉
本発明は上記従来の問題点に鑑み、これを解消するため
になされたもので、低価格で熱放散性に優れた、しかも
蛍光燈等の交換が容易な照明装置内蔵型の薄型液晶表示
装置を提供することを目的とするものである。<Purpose of the Invention> The present invention has been made in view of the above-mentioned conventional problems and to solve them, and provides a built-in lighting device that is inexpensive, has excellent heat dissipation properties, and is easy to replace with fluorescent lights, etc. The object of the present invention is to provide a thin liquid crystal display device.
〈発明の構成〉
本発明は上記目的を達成するために、照明装置内蔵型の
液晶表示装置において、照明装置は液晶表示パネルを支
持するシャーシ内に内蔵されており、回路基板がシャー
シの裏側部分の周縁部分に配置され、液晶駆動用集積回
路チップはダイレクトボンディング技術により直接回路
基板上に搭載された液晶表示装置の構造を特徴とする。<Structure of the Invention> In order to achieve the above object, the present invention provides a liquid crystal display device with a built-in lighting device, in which the lighting device is built in a chassis that supports a liquid crystal display panel, and the circuit board is located on the back side of the chassis. The integrated circuit chip for driving the liquid crystal display is mounted on the circuit board directly using direct bonding technology.
〈実施例〉
以下、本発明の一実施例について第１図及び第２図を参
照しながら詳説する。第１図において、第４図と同等の
ものには同一の符号が付しである。<Example> Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 and 2. In FIG. 1, parts equivalent to those in FIG. 4 are given the same reference numerals.
そして、ＬＳＩチップ４をダイレクトボンディング技術
により搭載した回路基板３がシャーシ５の裏側部分の周
縁に固定されておち、照明装置の裏側には回路基板が存
在しない点において第４図のものと相違する。第２図は
本実施例における他の部位の断面図である。上記実施例
においてＬＳＩチップ４は従来のテープキャリア法によ
るアウターリードボンディング技術によシ回路基板であ
るプリント基板３上に片面実装されている。アウターリ
ードのボンディングピッチは２５０．ａｍである。液晶
表示パネル１の接続電極と駆動回路を構成する回路基板
３の接続電極とはフレキシブル回路基板２を介して従来
の異方導電性フィルムによシミ気的に接続されている。The circuit board 3 on which the LSI chip 4 is mounted by direct bonding technology is fixed to the periphery of the back side of the chassis 5, and it differs from the one in FIG. 4 in that there is no circuit board on the back side of the lighting device. . FIG. 2 is a sectional view of other parts in this embodiment. In the above embodiment, the LSI chip 4 is single-sided mounted on the printed circuit board 3, which is a circuit board, by outer lead bonding technology using the conventional tape carrier method. The bonding pitch of the outer lead is 250. It is am. The connection electrodes of the liquid crystal display panel 1 and the connection electrodes of the circuit board 3 constituting the drive circuit are electrically connected via a flexible circuit board 2 to a conventional anisotropic conductive film.
そしてこれらは第２図に示す如くシャーシに形成された
回路基板固定用のツメ９と突起１１及び従来のベゼル８
によりシャーシ５に固定されている。These are the circuit board fixing claws 9 and projections 11 formed on the chassis and the conventional bezel 8, as shown in FIG.
It is fixed to the chassis 5 by.
上記構成とすることによ杉、回路基板であるプリント基
板３０面積及びスルーホールの数を大幅に減少すること
ができ、その結果、基板コストが大幅に縮減されるため
装置コストの低減が測れる。With the above configuration, the area of the printed circuit board 30, which is a circuit board, and the number of through holes can be significantly reduced, and as a result, the cost of the board is significantly reduced, resulting in a reduction in the cost of the device.
又、照明装置の裏側に回路基板３を配しないため装置の
厚みが液晶表示パネル１と照明装置の厚さの合計のみと
なり、薄型化−が測れ、照明装置の反射板７が直接露出
するため熱放散性が向上する。In addition, since the circuit board 3 is not placed on the back side of the lighting device, the thickness of the device is only the sum of the thicknesses of the liquid crystal display panel 1 and the lighting device, making it possible to reduce the thickness and directly exposing the reflecting plate 7 of the lighting device. Improves heat dissipation.
更に照明装置の蛍光燈６に不良が生じた場合にも反射板
７を取シ外すだけで容易に蛍光燈６の交換が可能である
。Furthermore, even if a defect occurs in the fluorescent lamp 6 of the lighting device, the fluorescent lamp 6 can be easily replaced by simply removing the reflector plate 7.
上記実施例においては、ＬＳＩチップ４はテープキャリ
ア方式によるアウターリードボンディング技術により搭
載したが、ＬＳＩチップは従来のワイヤボンアイング方
式、フリップチップボンディング方式等の他のダイレク
トボンディング技術を用いて搭載してもよい０又、フレ
キシブル回路基板２と、液晶表示パネル１の電極又は液
晶駆動用回路基板３の電極との接続は半田付け、圧接あ
るいはエラストマー接続等の他の種々の接続方法を用い
てもよい。又、液晶駆動用回路基板３の固定は本発明の
別の実施例である第３図に示す如く、照明装置の反射板
７とベゼル５によシ固定してもよい。In the above embodiment, the LSI chip 4 was mounted using outer lead bonding technology using a tape carrier method, but the LSI chip 4 could also be mounted using other direct bonding technologies such as the conventional wire bonding method and flip chip bonding method. Furthermore, the connection between the flexible circuit board 2 and the electrodes of the liquid crystal display panel 1 or the electrodes of the liquid crystal driving circuit board 3 may be performed using various other connection methods such as soldering, pressure welding, or elastomer connection. . Further, the liquid crystal driving circuit board 3 may be fixed to the reflector plate 7 and bezel 5 of the illumination device, as shown in FIG. 3, which is another embodiment of the present invention.
〈発明の効果〉
以上の説明から明らかな様忙、本発明の照明装置内蔵型
液晶表示装置によると、低価格化、薄型化を測ることが
でき、しかも蛍光燈等の光源を容易に交換することも可
能である。<Effects of the Invention> As is clear from the above description, the liquid crystal display device with built-in illumination device of the present invention can be made lower in price and thinner, and moreover, light sources such as fluorescent lights can be easily replaced. It is also possible.
第１図は本発明の一実施例を示す液晶表示装置の構成断
面図、第２図は同じ実施例における別の位置での断面拡
大図、第３図は本発明の別の実施例を示す正面断面図、
第４図は従来の照明装置内蔵型液晶表示装置の正面断面
図である。
１・・・・液晶表示パネル、 ２・・・回路基板、３
．３′・・・回路基板、 ４・・・ＬＳＩチップ、
５・・・シャーシ、 ６・・・蛍光燈、 ７・
・・反射板、８・・・ベゼル、 ９・・・回路基板
固定用ツメ、１０・・・フラットパッケージ型ＬＳＩ、
１１・・・回路基板固定用突起。
代理人 弁理士 杉 山 股 至（他１名）第１図
第２図FIG. 1 is a cross-sectional view of the structure of a liquid crystal display device showing one embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the same embodiment at a different position, and FIG. 3 is another embodiment of the present invention. Front sectional view,
FIG. 4 is a front sectional view of a conventional liquid crystal display device with a built-in lighting device. 1...Liquid crystal display panel, 2...Circuit board, 3
．． 3'...Circuit board, 4...LSI chip,
5... Chassis, 6... Fluorescent light, 7.
...Reflector, 8...Bezel, 9...Circuit board fixing claw, 10...Flat package type LSI,
11...Protrusion for fixing the circuit board. Agent Patent attorney Itaru Sugiyama Mata (1 other person) Figure 1 Figure 2
Claims (1)
成る液晶表示装置において、前記照明装置は前記液晶表
示パネルを支持するシャーシ内に内蔵され、前記駆動回
路は回路基板上にダイレクトボンディングされた集積回
路を具備して成り、前記回路基板は前記シャーシの前記
液晶表示パネル支持部分の周縁に配置されていることを
特徴とする液晶表示装置。1. In a liquid crystal display device comprising a liquid crystal display panel, a driving circuit, and a lighting device, the lighting device is built into a chassis that supports the liquid crystal display panel, and the driving circuit is directly bonded onto a circuit board. 1. A liquid crystal display device comprising an integrated circuit, wherein the circuit board is disposed at a periphery of the liquid crystal display panel support portion of the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123035A JPS62278532A (en) | 1986-05-26 | 1986-05-26 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61123035A JPS62278532A (en) | 1986-05-26 | 1986-05-26 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62278532A true JPS62278532A (en) | 1987-12-03 |
Family
ID=14850596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61123035A Pending JPS62278532A (en) | 1986-05-26 | 1986-05-26 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62278532A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157321U (en) * | 1988-04-19 | 1989-10-30 | ||
| JPH0311225U (en) * | 1989-06-19 | 1991-02-04 | ||
| JPH0943579A (en) * | 1995-07-28 | 1997-02-14 | Nec Corp | Liquid crystal display device |
| JP2001201733A (en) * | 1999-11-30 | 2001-07-27 | Samsung Electronics Co Ltd | Liquid crystal display device |
| JP2002131722A (en) * | 2000-10-19 | 2002-05-09 | Fujitsu Kiden Ltd | Liquid crystal display unit and display device |
| KR100358608B1 (en) * | 1993-07-30 | 2003-02-25 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Flat-panel display device, illumination system and radiation source suitable for use in such a flat-panel display device |
| JP2005018052A (en) * | 2003-06-25 | 2005-01-20 | Samsung Electronics Co Ltd | Liquid crystal display device and tablet personal computer with same |
| JP2007140271A (en) * | 2005-11-21 | 2007-06-07 | Hitachi Displays Ltd | Display device |
| JP2008287293A (en) * | 2008-08-21 | 2008-11-27 | Hitachi Displays Ltd | Display device |
| JP2011237817A (en) * | 2011-07-05 | 2011-11-24 | Fujitsu Frontech Ltd | Liquid crystal display unit and display device |
| JP2015094844A (en) * | 2013-11-12 | 2015-05-18 | 三菱電機株式会社 | Display device |
-
1986
- 1986-05-26 JP JP61123035A patent/JPS62278532A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157321U (en) * | 1988-04-19 | 1989-10-30 | ||
| JPH0311225U (en) * | 1989-06-19 | 1991-02-04 | ||
| KR100358608B1 (en) * | 1993-07-30 | 2003-02-25 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Flat-panel display device, illumination system and radiation source suitable for use in such a flat-panel display device |
| JPH0943579A (en) * | 1995-07-28 | 1997-02-14 | Nec Corp | Liquid crystal display device |
| JP2001201733A (en) * | 1999-11-30 | 2001-07-27 | Samsung Electronics Co Ltd | Liquid crystal display device |
| JP2002131722A (en) * | 2000-10-19 | 2002-05-09 | Fujitsu Kiden Ltd | Liquid crystal display unit and display device |
| JP2005018052A (en) * | 2003-06-25 | 2005-01-20 | Samsung Electronics Co Ltd | Liquid crystal display device and tablet personal computer with same |
| JP2007140271A (en) * | 2005-11-21 | 2007-06-07 | Hitachi Displays Ltd | Display device |
| JP2008287293A (en) * | 2008-08-21 | 2008-11-27 | Hitachi Displays Ltd | Display device |
| JP2011237817A (en) * | 2011-07-05 | 2011-11-24 | Fujitsu Frontech Ltd | Liquid crystal display unit and display device |
| JP2015094844A (en) * | 2013-11-12 | 2015-05-18 | 三菱電機株式会社 | Display device |
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