JPS63254418A - Reflection type liquid crystal display device - Google Patents
Reflection type liquid crystal display deviceInfo
- Publication number
- JPS63254418A JPS63254418A JP9021687A JP9021687A JPS63254418A JP S63254418 A JPS63254418 A JP S63254418A JP 9021687 A JP9021687 A JP 9021687A JP 9021687 A JP9021687 A JP 9021687A JP S63254418 A JPS63254418 A JP S63254418A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- liquid crystal
- crystal display
- display device
- terminal part
- 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 30
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000004020 conductor Substances 0.000 claims abstract description 21
- 229910052737 gold Inorganic materials 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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、表示パネルの導体端子部を、表示パネルの裏
面に設けられた、駆動用ＩＣが装備されている基板上の
端子電極群に接続された構成で、投射型表示で液晶の複
屈折を利用した反射型液晶表示デバイスに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for connecting a conductor terminal portion of a display panel to a group of terminal electrodes on a substrate provided on the back surface of the display panel and equipped with a driving IC. The present invention relates to a reflective liquid crystal display device that utilizes the birefringence of liquid crystal in a projection type display.
従来の技術
従来は、表示パネルの導体端子部を、駆動用ＩＣが装備
されている基板上の端子電極群との接続には、ワイヤー
ボンドによる接続法、フレキシブル基板との間を導電性
ゴムを介して熱圧着により接続する方法等が取られてき
た。また、特開昭５３−５９３９８号公報にみられるよ
うに表示パネルを形成しているガラス基板上の導体端子
部に、接続用突起電極を形成したＩＣチップを装着して
いる方法が堤案されている。Conventional technology Conventionally, the conductor terminals of the display panel were connected to the terminal electrode group on the board equipped with the driving IC using wire bonding, and conductive rubber was used to connect the conductive terminals to the flexible board. A method of connecting by thermocompression bonding, etc., has been adopted. Furthermore, as seen in Japanese Patent Application Laid-Open No. 53-59398, a method has been proposed in which an IC chip with connection protruding electrodes is attached to a conductor terminal portion on a glass substrate forming a display panel. ing.
発明が解決しようとする問題点
しかしながら、第１の従来方法においては、接続端子数
が増加するとともに、端子間隔が微細になるにつれて、
導電性ゴムの微細化が困難になる。Problems to be Solved by the Invention However, in the first conventional method, as the number of connection terminals increases and the terminal spacing becomes finer,
It becomes difficult to miniaturize conductive rubber.
またワイヤーボンディングにしても、接続処理時間が急
激に増すとともに、ボンディング可能な微細寸法も限界
が生じる問題点を有している。さらに、第２の従来方法
においては、表示パネル部、特に、アクティブ素子が形
成されている基板であれば、ＩＣチップ装着するために
基板サイズを大きく取る必要が生じ、成膜時の基板枚数
を制限する問題を有している。しかも、表示パネル側の
信号線、走査線の導体端子部に断線が生じた時、改めて
、反対側の導体端子部と接続を取る必要がある。Wire bonding also has the problem that the connection processing time increases rapidly and that there is a limit to the fine dimensions that can be bonded. Furthermore, in the second conventional method, if the display panel part, especially the substrate on which active elements are formed, it is necessary to increase the size of the substrate in order to mount the IC chip, which reduces the number of substrates during film formation. It has a limiting problem. Furthermore, when a disconnection occurs in the conductor terminal portion of the signal line or scanning line on the display panel side, it is necessary to reconnect the conductor terminal portion on the opposite side.
本発明は上記の問題点に鑑みてなされたもので 。The present invention has been made in view of the above problems.
あり、その目的とする所は、微細かつ密に形成されてい
る表示デバイスの導体端子層と駆動用１ｃが装着されて
いる基板の入出力端子部とを、きわめてコンパクトにか
つ１３頼性良く電気的接続を行うことにある。The purpose of this is to connect the conductor terminal layer of the display device, which is formed minutely and densely, and the input/output terminal section of the board on which the drive circuit board is mounted, in an extremely compact and highly reliable manner. The goal is to make physical connections.
問題点を解決するための手段
上記の問題点を解決するために本発明の反射型表示デバ
イスは、駆動用ＩＣを装備した基板を表示パネルの裏面
に設け、しかも接続を要する導体端子部の片側には突起
電極、および前記突起ｉｔ権上に形成した導電性接合層
から形成することにより、反射型液晶表示パネルの入力
導体端子部と駆動用ｔＣと接続することを特徴とするも
のである。Means for Solving the Problems In order to solve the above problems, the reflective display device of the present invention is provided with a substrate equipped with a driving IC on the back side of the display panel, and one side of the conductor terminal portion that requires connection. The present invention is characterized in that the input conductor terminal portion of the reflective liquid crystal display panel and the driving tC are connected by forming a protruding electrode and a conductive bonding layer formed on the protruding portion.
作用
本発明は上記した構成により、表示パネルの裏面をすべ
て利用できるため、駆動用ｔＣとの入出力端子部との接
続を、高密度かつ多数本に対し、接触抵抗が低（信頼性
の高い電気接続が可能となる。しかも、表示パネル基板
は、有効表示部以外の接続部の面積も権力小さくするこ
とも可能である。しかも、表示パネルの信号線、走査線
にＭ線が生じた場合にも、表示パネル両側に接続されて
いるため、救済措置としても作用する。The present invention has the above-mentioned configuration, so that the entire rear surface of the display panel can be used, so that the connection between the drive TC and the input/output terminals can be made in high density and in large numbers, with low contact resistance (high reliability). Electrical connection is possible.Moreover, the display panel board can also reduce the area of connection parts other than the effective display part.Furthermore, if an M line occurs in the signal line or scanning line of the display panel, However, since it is connected to both sides of the display panel, it also acts as a relief measure.
実施例
以下、本発明の一実施例の反射型液晶表示デバイスにつ
いて図面を参照しながら説明する。EXAMPLE Hereinafter, a reflective liquid crystal display device according to an example of the present invention will be described with reference to the drawings.
第１図は、本発明の一実施例の反射型液晶表示デバイス
の断面図、第２図は、他の一実施例である。また第３図
は表示デバイスの表示パネルがＴＰＴスイッチングアレ
イを用いた液晶パネルの場合のパネル平面図を示してい
る。FIG. 1 is a sectional view of a reflective liquid crystal display device according to one embodiment of the present invention, and FIG. 2 is another embodiment. Further, FIG. 3 shows a panel plan view when the display panel of the display device is a liquid crystal panel using a TPT switching array.
第１図において１はＴＦＴアレイ基板、２はゲート走査
ｍｌｌと信号線１２をまとめてあられした導体端子部、
３は突起電極、４は導電性接合層、９は駆動用ＩＣ１）
０はＩＣの入出力端子部である。なお、表示は液晶の複
屈折モードを利用しＴＦＴアレイ上の画素で反射される
ものとする。In FIG. 1, 1 is a TFT array substrate, 2 is a conductor terminal section in which the gate scanning mll and signal line 12 are assembled together;
3 is a protruding electrode, 4 is a conductive bonding layer, 9 is a driving IC 1)
0 is an input/output terminal section of the IC. It is assumed that the display utilizes the birefringence mode of the liquid crystal and is reflected by pixels on the TFT array.
本発明の実施例では、第４図に示すように、液晶表示部
１６を有したＴＦＴアレイ基板１の導体端子部２にメッ
キ技術、またはネイルヘッドボンディングの技術を用い
て３０ミクロンがら１００ミクロンの高さのＡｕからな
る突起電極３を形成する０次いで、ＴＰＴアレイ基板１
の突起電極３に数１０ミクロンの導電性接合Ｍ４を設け
る。この接合層４は、接着材としてエポキシ系、フェノ
ール系等を主剤とし、Ａｇ、Ａｕ、Ｎｉ、Ｃ。In the embodiment of the present invention, as shown in FIG. 4, the conductor terminal portion 2 of the TFT array substrate 1 having the liquid crystal display portion 16 is coated with a thickness of 30 microns to 100 microns using plating technology or nail head bonding technology. Next, the TPT array substrate 1 is formed with protruding electrodes 3 made of Au of the same height.
A conductive junction M4 of several tens of microns is provided on the protruding electrode 3. This bonding layer 4 mainly uses epoxy, phenol, etc. as an adhesive, and includes Ag, Au, Ni, and C.
ＳｎＯ□などのフレークを混ぜた物であり、転写等で、
前記突起電極３上に形成する。また第二接続基＠７上に
も同様の突起電極と導電性接合層を設けておく、上記導
電性接合Ｎ４を形成した液晶表示用ＴＰＴアレイｌと駆
動用ｒＣ９を装着した基板８を第１図に示すように、第
一および第二接続基板を介して接続する。このときＴＰ
Ｔ基板１の導電性接合部４と第一接続基板６の電極部と
を対向させ、または接続基板７の上記導電性接合層４と
基Ｆｉ８の入出力端子部ｌＯと対向させ位置合せ後、電
気オープン、ヒートコラム等を用いて加熱接着法により
接続する。この時、入出力端子部１０側にはＡｕ、 Ｎ
ｉ、 ＩＴＯ、Ｃｕ、 Ｃｒ、 Ｔｉ等を形成しておく
、また入出力端子部ｌＯ側にＡＩが形成されている場合
には、上記導電性接合層４としてＩ ｎＳｎを用いＡＩ
と合金接続をおこなう。It is a mixture of flakes such as SnO□, and by transfer etc.
It is formed on the protruding electrode 3. Further, similar protruding electrodes and a conductive bonding layer are provided on the second connection base @7. As shown in the figure, the connection is made through the first and second connection boards. At this time, T.P.
After aligning the conductive bonding portion 4 of the T-substrate 1 and the electrode portion of the first connection substrate 6, or by aligning the conductive bonding layer 4 of the connection substrate 7 and the input/output terminal portion lO of the group Fi8, Connect by heat bonding method using electrical open, heat column, etc. At this time, Au and N are placed on the input/output terminal section 10 side.
i, ITO, Cu, Cr, Ti, etc. are formed in advance, and if AI is formed on the input/output terminal portion lO side, InSn is used as the conductive bonding layer 4 to form the AI.
Perform alloy connection with.
以上のようにして、導電性接合Ｎ４を備えた駆動用［Ｃ
９を装着した基板８の入出力端子部１０と、表示部をそ
なえたＴＦＴアレイのゲート走査線１）および信号線１
２の導体端子部２とを表示パネルの裏面で電気的に接続
できる。なお、実施例では、導電性接合層４の形成部位
をＴＰＴアレイ１の突起電極３上面としたが、その形成
部位は突起電極上に限定されるものではなく、ＩＣが実
装された基板９の入出力端子部ｌＯ上にあるいは第一接
続基板６の扉体端子部上に設けてもさしつかえない、ま
た基板ｌについては、単純ドツトマトリクス型液晶パネ
ル、二端子素子付アクティブマトリクス型液晶パネル、
ＥＬ表示パネル、プラズマ表示パネルでも、共通して使
用可能な構成である。また、ＩＣを装着した基板９は、
ガラス。As described above, the driving [C
The input/output terminal section 10 of the substrate 8 equipped with the 9, the gate scanning line 1) and the signal line 1 of the TFT array equipped with the display section.
2 can be electrically connected to the conductor terminal portion 2 on the back surface of the display panel. In the embodiment, the conductive bonding layer 4 was formed on the top surface of the protruding electrodes 3 of the TPT array 1, but the formation site is not limited to the protruding electrodes, but may be formed on the substrate 9 on which the IC is mounted. It may be provided on the input/output terminal section lO or on the door body terminal section of the first connection board 6, and for the board l, a simple dot matrix type liquid crystal panel, an active matrix type liquid crystal panel with two terminal elements,
The structure can be used in common with EL display panels and plasma display panels. In addition, the board 9 on which the IC is mounted is
glass.
セラミック、ガラスエポキシ等の基板でも差支えない。A substrate made of ceramic, glass epoxy, etc. may also be used.
第二の実施例では、第２図に示すように液晶表示パネル
のＴＦＴアレイ基板１の対向基板５の裏面を利用してい
るため、第一の実施例の第一の接続基板６が不必要にな
るため構成も簡単にな発明の詳細
な説明したように、本発明の反射型液晶表示パネルの導
電性端子の接続構造によれば、表示パネルをチップの接
続と同様の取り扱いが可能になるので、表示パネルの高
密度、多数本の導体端子部を、駆動用ＩＣに容易に接続
できる。しかも、表示パネル側の基板サイズが極力小さ
くできるため、ＴＦＴアレイのような薄膜の微細加工を
必要とする基板が一枚の基板から数多くとれてアクティ
ブ基板のコストダウンになり天川上極めて価値が高い、
さらにＴＰＴアレイの導体端子部は表示パネルの両側か
ら信号が入力されるため信号線。In the second embodiment, as shown in FIG. 2, the back surface of the counter substrate 5 of the TFT array substrate 1 of the liquid crystal display panel is used, so the first connection substrate 6 of the first embodiment is unnecessary. As described in detail, the connection structure of the conductive terminals of the reflective liquid crystal display panel of the present invention allows the display panel to be handled in the same way as chip connections. Therefore, the high density and large number of conductor terminals of the display panel can be easily connected to the driving IC. Furthermore, since the size of the substrate on the display panel side can be made as small as possible, many substrates that require microfabrication of thin films, such as TFT arrays, can be produced from a single substrate, reducing the cost of active substrates, making Amagawa extremely valuable. ,
Furthermore, the conductor terminals of the TPT array are used as signal lines because signals are input from both sides of the display panel.
走査線の配線にパネル内部で断線が生じても自動的に救
済され、パネルの歩留りが著しく向上する。Even if a disconnection occurs in the wiring of the scanning line inside the panel, it is automatically repaired, and the yield of the panel is significantly improved.
第１図は本発明の一実施例の反射型液晶表示デバイスの
断面図、第２図は他の一実施例の反射型液晶表示デバイ
スの断面図、第３図は表示デバイスの表示パネルがＴＰ
Ｔスインチングアレイを用いた液晶パネルの平面図、第
４図は液晶パネルを有するＴＰＴアレイの導体端子部に
突起電極と接合層を形成した断面図である。
ｌ・・・・・・ＴＦＴアレイ基板、２・・・・・・導体
端子部、３・・・・・・突起電極、４・・・・・・導電
性接合層、５・・・・・・対向電極、６・・・・・・第
一接続基板、７・・・・・・第二接続基板、８・・・・
・・ＩＣを装着した基板、９・・・・・・駆動用ＩＣ１
）０・・・・・・ＩＣの信号入力端子、１）・・・・・
・ゲート走査線、１２・・・・・・信号線、１３・・・
・・・ＴＦＴ。
１４・・・・・・液晶、１５・・・・・・液晶表示部。
代理人の氏名 弁理士 中尾敏男 はか１名Ｉ２−６５
−縄
４３−−−ＩＦｌ
１゜ 、３′５−゛−橢１坤
２．５４ 図FIG. 1 is a cross-sectional view of a reflective liquid crystal display device according to one embodiment of the present invention, FIG. 2 is a cross-sectional view of a reflective liquid crystal display device according to another embodiment, and FIG. 3 is a sectional view of a reflective liquid crystal display device according to an embodiment of the present invention.
FIG. 4 is a plan view of a liquid crystal panel using a T-switching array, and a cross-sectional view of a TPT array having a liquid crystal panel with protruding electrodes and a bonding layer formed on the conductor terminal portion. 1... TFT array substrate, 2... Conductor terminal portion, 3... Projection electrode, 4... Conductive bonding layer, 5... - Counter electrode, 6...first connection board, 7...second connection board, 8...
... Board with IC installed, 9... Drive IC1
)0...IC signal input terminal, 1)...
・Gate scanning line, 12... Signal line, 13...
...TFT. 14...Liquid crystal, 15...Liquid crystal display section. Name of agent: Patent attorney Toshio Nakao Haka1 person I2-65
-Rope 43---IFl 1゜, 3'5-゛-橢1kon2.54 Fig.
Claims (1)
れている反射型液晶表示パネルにおいて、駆動用ＩＣを
表示パネルの裏面に装備されていることを特徴とする反
射型液晶表示デバイス。 （２）液晶の複屈折モードを利用して表示することを特
徴とする特許請求の範囲第（１）項記載の反射型液晶表
示デバイス。 （３）アクティブ素子が、２端子素子あるいはＴＦＴ素
子で形成されていることを特徴とする特許請求の範囲第
（１）項記載の反射型液晶表示デバイス（４）駆動用Ｉ
Ｃをアクティブ素子が形成されている基板あるいは対向
基板の裏面に装備されていることを特徴とする特許請求
の範囲第（１）項記載の反射型液晶表示デバイス。 （５）駆動用ＩＣを装備している基板の導体端子部に突
起電極および前記突起電極上に導電性接合層が形成され
ており、反射型液晶表示パネルの信号入力用導体端子部
と接続されていることを特徴とする特許請求の範囲第（
２）記載の反射型液晶表示デバイス。[Scope of Claims] (1) A reflective liquid crystal display device in which an active switching element is formed in each display pixel, characterized in that a driving IC is installed on the back surface of the display panel. . (2) A reflective liquid crystal display device according to claim (1), characterized in that display is performed using birefringence mode of liquid crystal. (3) The reflective liquid crystal display device according to claim (1), wherein the active element is formed of a two-terminal element or a TFT element (4) Driving I
2. A reflective liquid crystal display device according to claim 1, wherein the reflective liquid crystal display device is provided on the back surface of a substrate on which active elements are formed or a counter substrate. (5) A protruding electrode is formed on the conductor terminal portion of the substrate equipped with the driving IC, and a conductive bonding layer is formed on the protrusion electrode, and is connected to the signal input conductor terminal portion of the reflective liquid crystal display panel. Claim No. 1 (
2) The reflective liquid crystal display device described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62090216A JP2600166B2 (en) | 1987-04-13 | 1987-04-13 | Reflective liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62090216A JP2600166B2 (en) | 1987-04-13 | 1987-04-13 | Reflective liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63254418A true JPS63254418A (en) | 1988-10-21 |
| JP2600166B2 JP2600166B2 (en) | 1997-04-16 |
Family
ID=13992291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62090216A Expired - Fee Related JP2600166B2 (en) | 1987-04-13 | 1987-04-13 | Reflective liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2600166B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59101623A (en) * | 1982-12-01 | 1984-06-12 | Asahi Glass Co Ltd | Display device |
| JPS59210419A (en) * | 1983-05-13 | 1984-11-29 | Seiko Epson Corp | Liquid crystal display body device |
| JPS60108822A (en) * | 1983-11-18 | 1985-06-14 | Alps Electric Co Ltd | Terminal connecting method of liquid crystal display element |
| JPS60229091A (en) * | 1984-04-27 | 1985-11-14 | 株式会社東芝 | Liquid crystal display unit |
| JPS60254077A (en) * | 1984-05-30 | 1985-12-14 | シャープ株式会社 | Wire connector |
| JPS6234186A (en) * | 1985-08-06 | 1987-02-14 | 三菱電機株式会社 | Connection of flexible wiring board |
-
1987
- 1987-04-13 JP JP62090216A patent/JP2600166B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59101623A (en) * | 1982-12-01 | 1984-06-12 | Asahi Glass Co Ltd | Display device |
| JPS59210419A (en) * | 1983-05-13 | 1984-11-29 | Seiko Epson Corp | Liquid crystal display body device |
| JPS60108822A (en) * | 1983-11-18 | 1985-06-14 | Alps Electric Co Ltd | Terminal connecting method of liquid crystal display element |
| JPS60229091A (en) * | 1984-04-27 | 1985-11-14 | 株式会社東芝 | Liquid crystal display unit |
| JPS60254077A (en) * | 1984-05-30 | 1985-12-14 | シャープ株式会社 | Wire connector |
| JPS6234186A (en) * | 1985-08-06 | 1987-02-14 | 三菱電機株式会社 | Connection of flexible wiring board |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2600166B2 (en) | 1997-04-16 |
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