JP3237038B2 - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JP3237038B2 JP3237038B2 JP15605293A JP15605293A JP3237038B2 JP 3237038 B2 JP3237038 B2 JP 3237038B2 JP 15605293 A JP15605293 A JP 15605293A JP 15605293 A JP15605293 A JP 15605293A JP 3237038 B2 JP3237038 B2 JP 3237038B2
- Authority
- JP
- Japan
- Prior art keywords
- pattern
- liquid crystal
- lcd
- connection electrode
- input
- 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.)
- Expired - Lifetime
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- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＬＣＤ基板の電極およ
びフレキシブルプリント基板との接続を改良した液晶表
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 an improved connection between electrodes of an LCD substrate and a flexible printed circuit board.
【０００２】[0002]
【従来の技術】近年、表示装置として液晶表示装置が各
種機器に採用されており、液晶は小型、軽量で低消費電
力のため、携帯用に適している。図４は従来のＬＣＤ
（液晶表示デバイス）４１のガラス基板４２に３個のＬ
ＳＩ（大規模集積回路）５１，５２，５３を直接実装す
るＣＯＧ（chip on glass）等による実装構成からなる
液晶表示装置４０の一例を示すもので、その３個のＬＳ
Ｉ５１，５２，５３とフレキシブルプリント基板６０と
が対になるように配置されている。2. Description of the Related Art In recent years, liquid crystal display devices have been employed in various devices as display devices. Liquid crystals are suitable for portable use because of their small size, light weight and low power consumption. Figure 4 shows a conventional LCD
(Liquid crystal display device) A glass substrate 42 of 41
This shows an example of a liquid crystal display device 40 having a mounting configuration of COG (chip on glass) or the like on which SIs (large-scale integrated circuits) 51, 52, 53 are directly mounted.
I51, 52, 53 and the flexible printed circuit board 60 are arranged so as to form a pair.
【０００３】即ち、ＬＣＤ４１の液晶画面４３を有する
ガラス基板４２には、図５に示すような透明導電膜であ
る出力側のＩＴＯパターン４４，４５，４６およびその
各々に対応する入力側のＩＴＯパターン４７，４８，４
９が形成されている。これら３組をなす出力側のＩＴＯ
パターン４４，４５，４６と入力側のＩＴＯパターン４
７，４８，４９との間を各々接続するＬＳＩ５１，５
２，５３が実装されており、この３個のＬＳＩ５１，５
２，５３は、図６に示すような入力側端子５６および出
力側端子５７を有している。そして、図１のように、入
力側のＩＴＯパターン４７，４８，４９に接続されるフ
レキシブルプリント基板６０は、直角方向の接続片部６
１，６２を備えて、その幅広の接続片部６２に表裏両面
を貫通する２群のスルーホール６３，６３，６３，…，
６３，６３，６３，…を有している。このフレキシブル
プリント基板６０は、裏面に配線パターン６５を有し、
その幅狭の接続片部６１に接続端子６６を有すると共
に、幅広の接続片部６２の２箇所に接続端子６７，６８
を有している。この接続端子６７，６８は、フレキシブ
ルプリント基板６０の表面側の配線パターン６９および
スルーホール６３，６３，６３，…，６３，６３，６
３，…を介して接続されている。以上のフレキシブルプ
リント基板６０の接続端子６６，６７，６８を、ＬＣＤ
ガラス基板４２の入力側のＩＴＯパターン４７，４８，
４９に熱圧着により各々接続することによって、ＬＣＤ
４１が図示せぬ液晶テレビ等の機器本体の回路基板に接
続される構成となる。That is, on a glass substrate 42 having a liquid crystal screen 43 of an LCD 41, there are provided ITO patterns 44, 45, 46 on the output side which are transparent conductive films as shown in FIG. 47,48,4
9 are formed. These three sets of output side ITO
Patterns 44, 45 and 46 and input side ITO pattern 4
LSIs 51 and 5 for connecting between ICs 7, 48 and 49, respectively
2 and 53 are mounted, and these three LSIs 51 and 5 are mounted.
2 and 53 have an input terminal 56 and an output terminal 57 as shown in FIG. Then, as shown in FIG. 1, the flexible printed circuit board 60 connected to the input side ITO patterns 47, 48, and 49 is connected to the connection piece 6 in the right angle direction.
, 62, and two groups of through holes 63, 63, 63,.
63, 63, 63,... This flexible printed board 60 has a wiring pattern 65 on the back surface,
The narrow connecting piece 61 has a connecting terminal 66 and the wide connecting piece 62 has two connecting terminals 67 and 68.
have. The connection terminals 67 and 68 are provided with a wiring pattern 69 on the front surface side of the flexible printed circuit board 60 and through holes 63, 63, 63,.
Are connected via 3,. The connection terminals 66, 67, 68 of the flexible printed circuit board 60 are
ITO patterns 47, 48 on the input side of the glass substrate 42,
LCDs by connecting to each other by thermocompression bonding to LCD 49
41 is connected to a circuit board of a device main body such as a liquid crystal television (not shown).
【０００４】[0004]
【発明が解決しようとする課題】このように、従来は、
フレキシブルプリント基板６０に直角方向の接続片部６
１，６２を備える必要があり、フレキシブルプリント基
板６０の形状が大となっていた。また、２個のＬＳＩ５
１，５２の共通信号を結線する必要から、幅広の接続片
部６２側を両面スルーホールタイプとしたフレキシブル
プリント基板６０が必要となり、コストが高いという欠
点があった。As described above, conventionally,
Connection piece 6 perpendicular to flexible printed circuit board 60
1, 62, and the shape of the flexible printed circuit board 60 was large. In addition, two LSIs 5
Since it is necessary to connect the common signals 1 and 52, a flexible printed circuit board 60 in which the wide connecting piece 62 side is a double-sided through-hole type is required, and there is a disadvantage that the cost is high.
【０００５】そこで、本発明の目的は、このような複数
のＬＳＩを実装するＬＣＤ基板に接続するフレキシブル
プリント基板の形状を小さくして、コストダウンが図れ
ると共に、ＬＣＤ基板の１側辺部に２個並べて実装する
ＬＳＩ毎の入力抵抗差を極力無くせる液晶表示装置を提
供することにある。Therefore, an object of the present invention is to reduce the shape of a flexible printed circuit board connected to an LCD board on which such a plurality of LSIs are mounted, to reduce cost, and to provide a flexible printed circuit board on one side of the LCD board. An object of the present invention is to provide a liquid crystal display device capable of minimizing a difference in input resistance between LSIs which are mounted side by side.
【０００６】[0006]
【課題を解決するための手段】以上の課題を解決すべく
本発明は、液晶画面を有するＬＣＤ基板の周辺部に、液
晶画面に駆動信号を出力するＬＳＩを少なくとも２個並
べて実装すると共に、そのＬＳＩの各々に信号を入力す
るフレキシブルプリント基板を接続して構成するための
液晶表示装置において、前記ＬＣＤ基板に、前記フレキ
シブルプリント基板との接続用電極パターンを設けると
共に、この接続用電極パターンと前記ＬＳＩの各々の入
力端子とを接続する配線パターンを設け、且つこの配線
パターンは、前記接続用電極パターンに近い前記ＬＳＩ
に対し前記接続用電極パターンから遠い側の端子に接続
するパターンと、このパターンに連続して、前記接続用
電極パターンから遠い前記ＬＳＩに対し前記接続用電極
パターンに近い側の端子に接続するパターンとを有する
構成としている。例えば、前記ＬＳＩは、そのチップの
長辺側の１側辺部の両端側に入力側の信号端子を各々有
し、且つその一方の信号端子側に抵抗を有している。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to mount at least two LSIs for outputting drive signals to a liquid crystal screen side by side on a peripheral portion of an LCD substrate having a liquid crystal screen. In a liquid crystal display device configured by connecting a flexible printed board for inputting a signal to each of the LSIs, an electrode pattern for connection with the flexible printed board is provided on the LCD board, and the connection electrode pattern and the A wiring pattern for connecting to each input terminal of the LSI, and the wiring pattern is provided in the LSI near the connection electrode pattern;
A pattern connected to a terminal farther from the connection electrode pattern, and a pattern connected to a terminal closer to the connection electrode pattern with respect to the LSI far from the connection electrode pattern. . For example, the LSI has input signal terminals on both ends of one long side of the chip, and has a resistor on one of the signal terminals.
【０００７】[0007]
【作用】ＬＣＤ基板は、その周辺部に実装する複数のＬ
ＳＩの各々の入力端子と接続する配線パターンが１箇所
でまとめられた接続用電極パターンを設けてなるので、
フレキシブルプリント基板との接続が１箇所で行える。
そして、ＬＣＤ基板の周辺部に少なくとも２個並べて実
装する各ＬＳＩにおいて、接続用電極パターンに近いＬ
ＳＩに対しては、接続用電極パターンから遠い側の入力
端子に接続して、接続用電極パターンから遠いＬＳＩに
対しては、接続用電極パターンに近い側の入力端子に接
続するので、ＬＳＩ毎の入力抵抗差が小さくなる。な
お、チップの長辺側の１側辺部の両端側に各々有する入
力側の信号端子の片側に抵抗を配置したＬＳＩとするこ
とで、入力抵抗差を無くせる。The LCD substrate has a plurality of LEDs mounted on its periphery.
Since a connection electrode pattern in which wiring patterns connected to each input terminal of the SI are combined at one location is provided,
Connection with the flexible printed circuit board can be performed at one place.
In each of the LSIs mounted side by side on the periphery of the LCD substrate, at least two L
For the SI, it is connected to the input terminal farther from the connection electrode pattern, and for the LSI far from the connection electrode pattern, it is connected to the input terminal closer to the connection electrode pattern. Is smaller. Note that an input resistance difference can be eliminated by using an LSI in which a resistor is arranged on one side of an input-side signal terminal provided on each of both ends of one long side of the chip.
【０００８】[0008]
【実施例】以下に、本発明に係る液晶表示装置の実施例
を図１乃至図３に基づいて説明する。先ず、図１は本発
明を適用した液晶表示装置１０の一例としてのＴＦＴ
（ThinFilm Transistor）方式のＬＣＤ１１へのＬＳＩ
２１，２２，２３およびフレキシブルプリント基板３０
の実装構成を示すもので、ＬＣＤ１１のガラス基板１２
は、その液晶画面１３の下方の側辺部に左右２個のＬＳ
Ｉ２１，２２を実装して、液晶画面１３の右方の側辺部
に１個のＬＳＩ２３を実装している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the liquid crystal display device according to the present invention will be described below with reference to FIGS. First, FIG. 1 shows a TFT as an example of a liquid crystal display device 10 to which the present invention is applied.
(ThinFilm Transistor) type LSI for LCD11
21, 22, 23 and flexible printed circuit board 30
FIG. 3 shows a mounting configuration of the glass substrate 12 of the LCD 11.
Are two LSs on the left and right sides of the lower side of the liquid crystal screen 13.
I21 and I22 are mounted, and one LSI 23 is mounted on the right side of the liquid crystal screen 13.
【０００９】即ち、ＬＣＤ１１は、そのガラス基板１２
内に液晶画面１３を有すると共に、ガラス基板１２表面
の下方の側辺部に、液晶画面１３の各画素に接続される
出力側の透明導電膜の一つである酸化インジウム（In2O
3）膜のＩＴＯ膜による左右のＩＴＯパターン１４，１
５を形成している。また、ガラス基板１２表面の右方の
側辺部に、同じく液晶画面１３の各画素に接続される出
力側のＩＴＯ膜によるＩＴＯパターン１６を形成してい
る。さらに、このＬＣＤ１１のガラス基板１２の表面に
は、図２に示すように、出力側の各ＩＴＯパターン１
４，１５，１６に対応する入力側の同じくＩＴＯ膜によ
るＩＴＯパターン１７，１８，１９を形成すると共に、
この入力側のＩＴＯパターン１７，１８，１９が一括し
て右方の側辺部の１箇所にまとめられた接続用電極パタ
ーン２０を形成している。That is, the LCD 11 has its glass substrate 12
A liquid crystal screen 13 is provided inside, and an indium oxide (In 2 O) which is one of output transparent conductive films connected to each pixel of the liquid crystal screen 13 is provided on a side portion below the surface of the glass substrate 12.
3 ) Left and right ITO patterns 14, 1 by the ITO film
5 are formed. On the right side of the surface of the glass substrate 12, an ITO pattern 16 of an output-side ITO film also connected to each pixel of the liquid crystal screen 13 is formed. Further, on the surface of the glass substrate 12 of the LCD 11, as shown in FIG.
Forming ITO patterns 17, 18, and 19 of the input side corresponding to 4, 15, and 16 by the same ITO film,
The input-side ITO patterns 17, 18, and 19 are collectively formed at one location on the right side to form a connection electrode pattern 20.
【００１０】特に、ガラス基板１２の下方の側辺部に設
ける入力側のＩＴＯパターン１７，１８に関しては、共
通出力信号用のパターン１７ａ，１８ａと、共通入力信
号用のパターン１７ｂ，１８ｂとに分割されている。即
ち、接続用電極パターン２０に共通出力信号用のパター
ン１８ａが連続し、このパターン１８ａから同じく共通
出力信号用のパターン１７ａが連続している。また、接
続用電極パターン２０に共通入力信号用のパターン１８
ｂが連続し、このパターン１８ｂから同じく共通入力信
号用のパターン１７ｂが連続している。ここで、図２に
おいて、パターン１７ａの端子部は出力側のＩＴＯパタ
ーン１４の右側に位置し、パターン１８ａの端子部も出
力側のＩＴＯパターン１５の右側に位置している。ま
た、パターン１７ｂの端子部は、パターン１７ａの下方
に沿って左側に少し延びてＩＴＯパターン１４の右側に
位置しているが、パターン１８ｂの端子部は、パターン
１８ａの下方に沿って左側に大きく延びてＩＴＯパター
ン１５の左側に位置している。なお、ガラス基板１２に
右方の側辺部に設ける入力側のＩＴＯパターン１９の端
子部は、出力側のＩＴＯパターン１６の下側に位置して
いる。[0010] In particular, with respect to the input side of the ITO pattern 17, 18 provided on the side portion of the lower glass substrate 12, co
Patterns 17a and 18a for the communication output signal and the common input signal.
No. patterns 17b and 18b. That is, the common output signal pattern 18a is continuous with the connection electrode pattern 20, and the common
The output signal pattern 17a is continuous. Further, the connection electrode pattern 20 is provided with a common input signal pattern 18.
b is continuous, and the common input signal is
The number pattern 17b is continuous. Here, in FIG. 2, the terminal portion of the pattern 17a is located on the right side of the ITO pattern 14 on the output side, and the terminal portion of the pattern 18a is also located on the right side of the ITO pattern 15 on the output side. The terminal portion of the pattern 17b extends slightly to the left below the pattern 17a and is located on the right side of the ITO pattern 14. However, the terminal portion of the pattern 18b greatly extends to the left below the pattern 18a. It extends and is located on the left side of the ITO pattern 15. The terminal of the input-side ITO pattern 19 provided on the right side of the glass substrate 12 is located below the output-side ITO pattern 16.
【００１１】そして、ＬＣＤ１１のガラス基板１２の下
方の側辺部上に、出力側のＩＴＯパターン１４，１５と
入力側のＩＴＯパターン１７，１８との間を各々接続す
る２個のＬＳＩ２１，２２を実装すると共に、同様に、
ガラス基板１２の右方の側辺部上に、出力側のＩＴＯパ
ターン１６と入力側のＩＴＯパターン１９との間を接続
するＬＳＩ２３を実装している。ここで、ＬＳＩ２１，
２２，２３は、細長い長方形のチップであり、図３に示
すように、一方の長辺部に出力側端子である多数の駆動
信号端子２６を有して、また、一方の短辺部に入力側端
子である多数の共通入力信号端子２７を有すると共に、
他方の長辺部の左右両端側寄りに同じく入力側端子であ
る複数（図示では４個）ずつの対をなす共通入力信号端
子２８，２８′を有している。このように、入力側端子
に関しては、抵抗の影響を受けない共通入力信号端子２
７をチップの短辺部側に配置し、特に、抵抗の影響を受
けやすい共通入力信号端子２８，２８′をチップの長辺
部側の左右に配置している。Then, on the lower side of the glass substrate 12 of the LCD 11, two LSIs 21 and 22 for connecting between the ITO patterns 14 and 15 on the output side and the ITO patterns 17 and 18 on the input side are provided. As well as implementing
On the right side of the glass substrate 12, an LSI 23 that connects the ITO pattern 16 on the output side and the ITO pattern 19 on the input side is mounted. Here, LSI21,
Numerals 22 and 23 denote elongated rectangular chips, each having a large number of drive signal terminals 26 as output terminals on one long side and having an input on one short side as shown in FIG. It has a number of common input signal terminals 27 which are side terminals,
A plurality of (four in the figure) pairs of common input signal terminals which are also input terminals near the left and right ends of the other long side.
Child 28, 28 '. As described above, regarding the input side terminal, the common input signal terminal 2 which is not affected by the resistance.
7 are arranged on the short side of the chip, and in particular, common input signal terminals 28 and 28 'which are easily affected by resistance are arranged on the left and right sides of the long side of the chip.
【００１２】以上のＬＳＩ２１，２２，２３は、その各
端子をはんだボールによるバンプにより、ＬＣＤ１１の
ガラス基板１２のＩＴＯパターン１４，１５，１６，１
７，１８，１９の各端子に接続して、ＣＯＧ実装する。
この場合、ＬＳＩ２１は、駆動信号端子２６を出力側の
ＩＴＯパターン１４に接続し、共通入力信号端子２７を
入力側のＩＴＯパターン１７のパターン１７ａに接続す
ると共に、一方の共通入力信号端子２８′を入力側のＩ
ＴＯパターン１７のパターン１７ｂに接続している。ま
た、ＬＳＩ２２は、駆動信号端子２６を出力側のＩＴＯ
パターン１５に接続し、共通入力信号端子２７を入力側
のＩＴＯパターン１８のパターン１８ａに接続すると共
に、他方の共通入力信号端子２８を入力側のＩＴＯパタ
ーン１８のパターン１８ｂに接続している。なお、ＬＳ
Ｉ２３は、駆動信号端子２６を出力側のＩＴＯパターン
１６に接続して、共通入力信号端子２７を入力側のＩＴ
Ｏパターン１９に接続している。The above-described LSIs 21, 22, and 23 have their respective terminals formed by bumps made of solder balls, so that the ITO patterns 14, 15, 16, and 1 on the glass substrate 12 of the LCD 11 are formed.
The terminals are connected to terminals 7, 18, and 19, and COG mounting is performed.
In this case, the LSI 21 connects the drive signal terminal 26 to the ITO pattern 14 on the output side, connects the common input signal terminal 27 to the pattern 17a of the ITO pattern 17 on the input side, and connects one common input signal terminal 28 ' Input side I
It is connected to the pattern 17b of the TO pattern 17. Also, the LSI 22 connects the drive signal terminal 26 to the output side ITO.
The common input signal terminal 27 is connected to the pattern 18a of the ITO pattern 18 on the input side, and the other common input signal terminal 28 is connected to the pattern 18b of the ITO pattern 18 on the input side. Note that LS
I23 connects the drive signal terminal 26 to the output side ITO pattern 16 and connects the common input signal terminal 27 to the input side IT pattern.
Connected to O pattern 19.
【００１３】そして、ＬＣＤ１１のガラス基板１２の入
力側のＩＴＯパターン１７，１８，１９が一括してまと
められた右方の側辺部の接続用電極パターン２０には、
一様な幅を有するフレキシブルプリント基板３０の裏面
に設けた配線パターン３１の接続用電極パターン３２を
熱圧着により接続する。このような構成による液晶表示
装置１０は、例えば、液晶テレビや電子手帳等の小型電
子機器に装着される。The connection electrode pattern 20 on the right side in which the ITO patterns 17, 18, and 19 on the input side of the glass substrate 12 of the LCD 11 are grouped together is
The connection electrode pattern 32 of the wiring pattern 31 provided on the back surface of the flexible printed circuit board 30 having a uniform width is connected by thermocompression bonding. The liquid crystal display device 10 having such a configuration is mounted on a small electronic device such as a liquid crystal television or an electronic organizer.
【００１４】図１に示すように、フレキシブルプリント
基板３０を接続してなるＬＣＤ１１は、図示せぬ液晶テ
レビ等の機器本体の回路基板から配線パターン３１に信
号が入力されて、接続用電極パターン３２，２０からＩ
ＴＯパターン１７，１８，１９をそれぞれ通り、各ＬＳ
Ｉ２１，２２，２３に信号がそれぞれ入る。そして、各
ＬＳＩ２１，２２，２３において、画像用信号が処理さ
れた後、各ＩＴＯパターン１４，１５，１６から液晶画
面に信号が送られて、各画素が駆動され、画像が映され
る。As shown in FIG. 1, an LCD 11 to which a flexible printed circuit board 30 is connected receives a signal from a circuit board of a device main body such as a liquid crystal television (not shown) to a wiring pattern 31, and a connection electrode pattern 32. , 20 to I
Each LS passes through the TO patterns 17, 18, and 19, respectively.
Signals enter I21, 22, and 23, respectively. After the image signals are processed in the LSIs 21, 22, and 23, signals are sent from the ITO patterns 14, 15, and 16 to the liquid crystal screen, and the pixels are driven to display an image.
【００１５】以上の通り、ＬＣＤ１１のガラス基板１２
上の各ＬＳＩ２１，２２，２３への入力側の配線パター
ン、即ち、ＩＴＯパターン１７，１８，１９を効率よく
行うことで、ＬＣＤ１１の周りに従来のようなフレキシ
ブルプリント基板を取り廻す必要がなくなり、非画像エ
リアを減少でき、従来よりもコストダウンすることがで
きる。また、ＬＣＤ１１のガラス基板１２上の各ＬＳＩ
２１，２２，２３への入力側のＩＴＯパターン１７，１
８，１９を一平面上に構成できて、表裏２層のクロス配
線を不要にできるため、従来のような両面スルーホール
タイプのフレキシブルプリント基板を用いずに、一様な
幅のフレキシブルプリント基板３０の片面のみに配線パ
ターン３１を設けるだけでよいことと併せて、コストダ
ウンの面でより有利なものとなる。As described above, the glass substrate 12 of the LCD 11
By efficiently performing wiring patterns on the input side to the above LSIs 21, 22, 23, that is, ITO patterns 17, 18, and 19, it is not necessary to arrange a flexible printed circuit board around LCD 11 as in the related art. The non-image area can be reduced, and the cost can be reduced as compared with the related art. Each LSI on the glass substrate 12 of the LCD 11
ITO pattern 17, 1 on the input side to 21, 22, 23
The flexible printed circuit board 30 having a uniform width can be formed without using a double-sided through-hole type flexible printed circuit board as in the related art because the wirings 8 and 19 can be configured on one plane and the cross wiring of the front and back layers is not required. In addition to having to provide the wiring pattern 31 only on one side of the above, it is more advantageous in terms of cost reduction.
【００１６】そして、ＬＣＤ１１のガラス基板１２の下
方の側辺部に設けた左右２個の各ＬＳＩ２１，２２に関
しては、図２において、信号は接続用電極パターン２０
から入り、右のＬＳＩ２２、左のＬＳＩ２１へと結線さ
れていることから、右のＬＳＩ２２、左のＬＳＩ２１の
順に入力される。しかし、この場合、特に、抵抗の影響
を受けやすい共通入力信号端子２８，２８′について
は、ＬＳＩ２１，２２の長辺部の左右に配置して、右の
ＬＳＩ２２は、左側の共通入力信号端子２８を用いて、
入力側のＩＴＯパターン１８のパターン１８ｂに接続
し、左のＬＳＩ２１は、右側の共通入力信号端子２８′
を用いて、入力側のＩＴＯパターン１７のパターン１７
ｂに接続してので、ＬＣＤ配線の引き廻しによる左右の
ＬＳＩ２１，２２の抵抗差を小さくすることができる。The two left and right LSIs 21 and 22 provided on the lower side of the glass substrate 12 of the LCD 11 are shown in FIG.
, And are connected to the right LSI 22 and the left LSI 21, and are input in the order of the right LSI 22 and the left LSI 21. However, in this case, in particular, the common input signal terminals 28 and 28 ′ that are easily affected by resistance are arranged on the left and right sides of the long sides of the LSIs 21 and 22, and the right LSI 22 is connected to the left common input signal terminal 28. Using,
The left LSI 21 is connected to the pattern 18b of the input side ITO pattern 18, and the right LSI 21 is connected to the right common input signal terminal 28 '.
, The pattern 17 of the input-side ITO pattern 17
b, the difference in resistance between the left and right LSIs 21 and 22 due to the routing of the LCD wiring can be reduced.
【００１７】以上の実施例では、ＬＳＩの共通入力信号
端子２８，２８′において、全く同じ電極としたが、予
め、ＬＣＤパターン引き廻しによる抵抗差を予測し、一
方の端子２８側に他方の端子２８′との差の抵抗をチッ
プ内に配置したＬＳＩとしておくことで、左右のＬＳＩ
２１，２２は、その入力レベルを全く同一にすることが
できるので、画像の安定が得られ、抵抗差が生じやすい
大画面化にも対応することができる。そして、ＬＳＩは
３つでも良く、その場合は、中間に位置するＬＳＩに合
わせて配線パターンを設ければ良い。すなわち、極端に
ＬＳＩが多い場合以外なら対応できる。In the above embodiment, the common input signal of the LSI
Although the terminals 28 and 28 'have exactly the same electrodes, an LSI in which the resistance difference due to the wiring of the LCD pattern is predicted in advance and the resistance of the difference between the one terminal 28 and the other terminal 28' is arranged in the chip. The left and right LSI
Since the input levels of the photodetectors 21 and 22 can be made completely the same, it is possible to obtain a stable image and to cope with a large screen in which a resistance difference is likely to occur. Then, the number of LSIs may be three, and in that case, a wiring pattern may be provided in accordance with the LSI located in the middle. That is, it is possible to cope with cases other than an extremely large number of LSIs.
【００１８】なお、以上の実施例においては、液晶テレ
ビや電子手帳としたが、本発明はこれに限定されるもの
ではなく、他の電子機器に備えられる液晶表示装置であ
ってもよい。また、ＬＣＤ基板に設ける異方性導電膜に
よる配線パターンの構成やその形成材料については、Ｉ
ＴＯの他、ＡｌやＡｇペースト等でもよく、さらに、Ｌ
ＳＩの構成等も任意であり、その他、具体的な細部構造
等についても適宜に変更可能であることは勿論である。In the above embodiment, a liquid crystal television or an electronic organizer is used. However, the present invention is not limited to this, and a liquid crystal display device provided in another electronic device may be used. Regarding the configuration of the wiring pattern formed of the anisotropic conductive film provided on the LCD substrate and the material for forming the wiring pattern,
In addition to TO, Al or Ag paste may be used.
The configuration and the like of the SI are also arbitrary, and it goes without saying that the specific detailed structure and the like can also be appropriately changed.
【００１９】[0019]
【発明の効果】以上のように、本発明に係る液晶表示装
置によれば、複数のＬＳＩを実装するＬＣＤ基板に対
し、入力側のフレキシブルプリント基板を１箇所で接続
するだけでよいため、フレキシブルプリント基板を小形
状化できて、ＬＣＤ基板周りも小形状化でき、また、フ
レキシブルプリント基板は、その片面に配線パターンを
設けるだけでよく、以上によりコストダウンを達成する
ことができる。しかも、ＬＣＤ基板の周辺部に少なくと
も２個並べて実装する各ＬＳＩにおいて、接続用電極パ
ターンに近いＬＳＩに対しては、接続用電極パターンか
ら遠い側の入力端子に接続して、接続用電極パターンか
ら遠いＬＳＩに対しては、接続用電極パターンに近い側
の入力端子に接続する構成のため、ＬＳＩ毎の入力抵抗
差を極力無くすことができる。さらに、例えば、チップ
の長辺側の１側辺部の両端側に各々有する入力側の信号
端子の片側に抵抗を配置したＬＳＩとすることにより、
以上のようなＬＣＤ基板への実装において、入力抵抗差
を無くすことができる。As described above, according to the liquid crystal display device of the present invention, the flexible printed circuit board on the input side only needs to be connected at one place to the LCD board on which a plurality of LSIs are mounted. The size of the printed circuit board can be reduced, and the area around the LCD substrate can also be reduced. Further, the flexible printed circuit need only be provided with a wiring pattern on one side thereof, thereby achieving cost reduction. In addition, in each of the LSIs which are mounted side by side on the LCD substrate, at least two LSIs are connected to the input terminal farther from the connection electrode pattern and connected to the input terminal farther from the connection electrode pattern. For a distant LSI, since it is connected to the input terminal on the side closer to the connection electrode pattern, it is possible to minimize the input resistance difference between the LSIs. Further, for example, an LSI in which a resistor is arranged on one side of an input-side signal terminal provided on each of both ends of one long side of the chip,
In the mounting on the LCD substrate as described above, the difference in input resistance can be eliminated.
【図１】本発明を適用した液晶表示装置の一例としての
ＬＣＤへのＬＳＩおよびフレキシブルプリント基板の実
装構成を示す平面図である。FIG. 1 is a plan view showing a mounting configuration of an LSI and a flexible printed board on an LCD as an example of a liquid crystal display device to which the present invention is applied.
【図２】本発明の実施例におけるＬＣＤの配線パターン
を示す平面図である。FIG. 2 is a plan view showing a wiring pattern of the LCD according to the embodiment of the present invention.
【図３】同じく本発明の実施例におけるＬＣＤに実装す
るＬＳＩの端子構成を示す透視平面図である。FIG. 3 is a perspective plan view showing a terminal configuration of an LSI mounted on the LCD according to the embodiment of the present invention.
【図４】従来のＬＣＤへのＬＳＩおよびフレキシブルプ
リント基板の実装構成の一例を示す平面図である。FIG. 4 is a plan view showing an example of a conventional mounting configuration of an LSI and a flexible printed board on an LCD.
【図５】従来のＬＣＤの配線パターンを示す平面図であ
る。FIG. 5 is a plan view showing a wiring pattern of a conventional LCD.
【図６】同じく従来のＬＣＤに実装するＬＳＩの端子構
成を示す透視平面図である。FIG. 6 is a perspective plan view showing a terminal configuration of an LSI mounted on a conventional LCD.
１０ 液晶表示装置 １１ ＬＣＤ １２ ガラス基板 １３ 液晶画面 １４，１５，１６，１７，１８，１９ 配線パターン
（ＩＴＯパターン） ２０ 接続用電極パターン ２１，２２，２３ ＬＳＩ ２６ 出力側の駆動信号端子 ２７ 入力側の共通入力信号端子 ２８，２８′ 入力側の共通入力信号端子 ３０ フレキシブルプリント基板 ３１ 配線パターン ３２ 接続用電極パターンReference Signs List 10 liquid crystal display device 11 LCD 12 glass substrate 13 liquid crystal screen 14, 15, 16, 17, 18, 19 wiring pattern (ITO pattern) 20 connection electrode pattern 21, 22, 23 LSI 26 drive signal terminal on output side 27 input side Common input signal terminals 28, 28 ' common input signal terminals 30 on the input side Flexible printed circuit board 31 Wiring pattern 32 Connection electrode pattern
Claims (2)
画面に駆動信号を出力する集積回路を少なくとも２個並
べて実装すると共に、その集積回路の各々に信号を入力
するためのフレキシブルプリント基板を接続して構成す
る液晶表示装置において、 前記液晶画面を有する基板に、前記フレキシブルプリン
ト基板との接続用電極パターンを設けると共に、この接
続用電極パターンと前記集積回路の各々の入力端子とを
接続する配線パターンを設け、 且つこの配線パターンは、前記接続用電極パターンに近
い前記集積回路に対し前記接続用電極パターンから遠い
側の端子に接続するパターンと、このパターンに連続し
て、前記接続用電極パターンから遠い前記集積回路に対
し前記接続用電極パターンに近い側の端子に接続するパ
ターンとを有することを特徴とする液晶表示装置。At least two integrated circuits that output drive signals to a liquid crystal screen are mounted side by side on a peripheral portion of a substrate having a liquid crystal screen, and a flexible printed board for inputting a signal to each of the integrated circuits is provided. In the liquid crystal display device configured by connection, a substrate having the liquid crystal screen is provided with an electrode pattern for connection to the flexible printed circuit board, and the connection electrode pattern is connected to each input terminal of the integrated circuit. A wiring pattern is provided, and the wiring pattern is connected to a terminal farther from the connection electrode pattern for the integrated circuit close to the connection electrode pattern, and the connection electrode is connected to the pattern. A pattern connected to a terminal closer to the connection electrode pattern for the integrated circuit far from the pattern. The liquid crystal display device, characterized in that.
１側辺部の両端側に入力側の信号端子を各々有し、且つ
その一方の信号端子側に抵抗を有していることを特徴と
する請求項１記載の液晶表示装置。2. The integrated circuit has input signal terminals on both ends of one long side of the chip and a resistor on one of the signal terminals. The liquid crystal display device according to claim 1, wherein:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15605293A JP3237038B2 (en) | 1993-06-01 | 1993-06-01 | Liquid crystal display |
| US08/192,489 US5467210A (en) | 1993-02-16 | 1994-02-07 | Arrangement of bonding IC chip to liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15605293A JP3237038B2 (en) | 1993-06-01 | 1993-06-01 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06342166A JPH06342166A (en) | 1994-12-13 |
| JP3237038B2 true JP3237038B2 (en) | 2001-12-10 |
Family
ID=15619266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15605293A Expired - Lifetime JP3237038B2 (en) | 1993-02-16 | 1993-06-01 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3237038B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109493739A (en) * | 2018-12-26 | 2019-03-19 | 上海天马微电子有限公司 | A kind of display panel and display device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100521656B1 (en) * | 1998-12-10 | 2005-12-21 | 삼성전자주식회사 | LCD Connector |
| EP1039788B1 (en) | 1999-03-26 | 2006-04-19 | Seiko Epson Corporation | Flexible printed wiring board, electro-optical device, and electronic equipment |
| KR100800670B1 (en) * | 2001-09-24 | 2008-02-01 | 삼성전자주식회사 | Connector of mobile phone |
| JP4748963B2 (en) * | 2004-09-28 | 2011-08-17 | 京セラ株式会社 | Display device |
-
1993
- 1993-06-01 JP JP15605293A patent/JP3237038B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109493739A (en) * | 2018-12-26 | 2019-03-19 | 上海天马微电子有限公司 | A kind of display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06342166A (en) | 1994-12-13 |
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