JPS63254419A - Reflection type liquid crystal display device - Google Patents
Reflection type liquid crystal display deviceInfo
- Publication number
- JPS63254419A JPS63254419A JP9024287A JP9024287A JPS63254419A JP S63254419 A JPS63254419 A JP S63254419A JP 9024287 A JP9024287 A JP 9024287A JP 9024287 A JP9024287 A JP 9024287A JP S63254419 A JPS63254419 A JP S63254419A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- liquid crystal
- crystal display
- display panel
- display device
- 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 28
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 239000010410 layer Substances 0.000 abstract description 14
- 239000012790 adhesive layer Substances 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
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 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
- 239000010408 film Substances 0.000 description 1
- 239000000203 mixture Substances 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
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
面で駆動用ＩＣが装備されている基板Ｆの端子電極群に
接続された構成で、しかも透過型パネルを利用し表示パ
ネルと前記ＩＣが装備されている基板との間に反射板と
偏向板とを設けて表示する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 has a configuration in which a conductor terminal portion of a display panel is connected to a group of terminal electrodes of a substrate F equipped with a driving IC on the back surface of the display panel. Moreover, the present invention relates to a reflective liquid crystal display device that utilizes a transmissive panel and displays by providing a reflective plate and a polarizing plate between the display panel and the substrate on which the IC is mounted.
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、フレキシプル基板との間を導電性
ゴム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
る方法が提案されている。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 a wire bond connection method, and the connection method with the flexible board was conducted using conductive rubber. Methods such as thermocompression bonding have been used. 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. There is.
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、新ため
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 make a new connection with the conductor terminal portion on the opposite side.
本発明は上記の問題点にかんがみてなされたものであり
、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ＩＣ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信
転性良く電気的接続を行うことにある。The present invention has been made in view of the above problems, and its purpose is to improve the conductor terminal layer of a display device, which is formed minutely and densely, and the input/output of a substrate on which a driving IC is mounted. The purpose is to make an extremely compact electrical connection with a terminal part with good reliability.
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、および前記突起電極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ＩＣと接続し、しかも液晶表示パネル
と駆動用ＩＣを装備した基板との間に反射板と偏向板と
を設けてい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. By forming a protruding electrode and a conductive bonding layer formed on the protruding electrode, the input conductor terminal portion of the reflective liquid crystal display panel and the driving IC are connected, and the liquid crystal display panel and the driving IC are connected. The device is characterized in that a reflection plate and a deflection plate are provided between it and the equipped board.
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ＩＣとの入出力端子部との接
続を、高密度かつ多数本に対し、接触抵抗が低く信頼性
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極力小さくするこ
とも可能である。しかも、表示パネルの信号線、走査線
に断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. Therefore, the connection between the drive IC and the input/output terminal section can be made using a highly reliable electrical connection with low contact resistance for a high density and large number of connections. Connection is now possible. Moreover, in the display panel substrate, the area of the connecting portions other than the effective display portion can be made as small as possible. Furthermore, even if a disconnection occurs in the signal line or scanning line of the display panel, since they are 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ＴＦＴ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 TFT switching array.
第１図において１はＴＦＴアレイ基板、２はゲート走査
線１）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ＩＣ，１
０はＩＣの入出力端子部である。１４は偏向板、１５は
反射板、そして１６は液晶である。なお、表示は液晶表
示パネルと駆動用ＩＣを設けた基板との間の反射板で入
射光が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 a gate scanning line 1) and a 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. 14 is a polarizing plate, 15 is a reflecting plate, and 16 is a liquid crystal. It is assumed that incident light is reflected by a reflection plate between a liquid crystal display panel and a substrate provided with a driving IC for display.
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アレイ基板基板環体端子部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ミクロンから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、ＴＦＴアレイ基板ｌ
の突起電極３に数１０ミクロンの導電性接合Ｎ４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 TFT array substrate ring terminal portion 2 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, a TFT array substrate l is formed to form protruding electrodes 3 made of Au with a height of
A conductive junction N4 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.
Ｓ ｎ Ｏ２などのフレークを混ぜた物であり、転写等
で、前記突起電１ｆｔ３上に形成する。また第二接続基
板７上にも同様の突起電極とＲ電性接合層をもうけてお
く、上記導電性接合層４を形成した液晶表示用ＴＦＴア
レイ１と駆動用ＩＣ９を装着した基板８を第１図に示す
ように、第−及び第二接ｖｔ基板を介して接続する。こ
のときＴ Ｆ ’ｒアレイ基板１の４電性接合部４と第
一接続基板６の電極部とを対向させ、または第二接続基
板７の上記導電性接合層４と基板８の入出力端子部ｌＯ
と対向させ位置合せ後、電気オーブン、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、Ｎｉ、ＩＴＯ，Ｃｕ。It is a mixture of flakes such as SnO2, and is formed on 1ft3 of the protruding electrodes by transfer or the like. Further, similar protruding electrodes and R conductive bonding layers are provided on the second connection substrate 7, and the substrate 8 on which the liquid crystal display TFT array 1 on which the conductive bonding layer 4 is formed and the driving IC 9 is mounted is placed on the second connection substrate 7. As shown in Figure 1, the connection is made through the first and second VT boards. At this time, the four-electroconductive bonding portion 4 of the T F'r array substrate 1 and the electrode portion of the first connection substrate 6 are made to face each other, or the above-mentioned conductive bonding layer 4 of the second connection substrate 7 and the input/output terminal of the substrate 8 are made to face each other. Part lO
After positioning and facing each other, they are connected by heat bonding using an electric oven, heat column, etc. At this time, Au, Ni, ITO, and Cu are placed on the input/output terminal section 10 side.
Ｃｒ、Ｔｉ等を形成しておく。また入出力端子部ｌＯ側
に／ｌが形成されている場合には、上記導電性接合７１
４としてＩ ｎＳｎを用いＡＩと合金接続をおこなう。Cr, Ti, etc. are formed in advance. In addition, when /l is formed on the input/output terminal portion lO side, the conductive junction 71
4, InSn is used to connect the alloy to AI.
以上のようにして、導電性接合層４を備えた駆動用ＩＣ
９を装着した基板８の入出力端子部ｌＯ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。尚、実施例では、導電性接合Ｎ４の形成部位を
ＴＦＴＦＴアレイ突起電極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の導体端子部上にもう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、セラミック、ガラスエポキシ等の基板でも差支
えない、第二の一実施例では、第２図に示すように液晶
表示パネルのＴＦＴアレイ基板基板対向基板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る。しかも反射板１５
、偏向板１６は基板１０と基板ｌとの間に設ける。As described above, the driving IC provided with the conductive bonding layer 4
The input/output terminal section 10 of the substrate 8 equipped with 9, the gate scanning line 1) of the TFT array equipped with the display section and the signal line 1
2 can be electrically connected to the conductor terminal portion 2 on the back surface of the display panel. In the embodiment, the conductive junction N4 was formed on the top surface of the TFTFT array protruding electrode 3, but the formation site is not limited to the protruding electrode, but can be formed on the input/output terminal of the substrate 9 on which the IC is mounted. It may be placed on the conductor terminal part of the first connection board 6 or on the conductor terminal part of the first connection board 6.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
In the second embodiment, which may be a substrate made of glass, ceramic, glass epoxy, etc., as shown in FIG. Since the first connection board 6 of the embodiment described above is no longer necessary, the configuration is also simplified. Moreover, the reflector plate 15
, the deflection plate 16 is provided between the substrate 10 and the substrate l.
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。しがち、表示パネル側の基板サイズ極力小さく
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実用上極めて価値が高い、さ
らにＴＦＴ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（８号線、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。As described in detail, according to the connection structure of the conductive terminals of the reflective liquid crystal display panel of the present invention, it is possible to handle the display panel in the same manner as connecting chips, so that it is possible to handle the display panel with high density, A large number of conductor terminals can be easily connected to a driving IC. However, because the size of the substrate on the display panel side can be made as small as possible, many substrates that require fine processing of thin films, such as TFT arrays, can be obtained from one substrate, reducing the cost of active substrates, which is extremely valuable in practical terms. Furthermore, since signals are input to the conductor terminals of the TFT array from both sides of the display panel (line 8 or scanning line), even if a break occurs inside the panel, it is automatically repaired, significantly improving the yield of the panel. .
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ＴＦ
Ｔスイ７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ＴＦＴ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。
１・・・・・・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
−接Ｖｔ基板、７・・・・・・第二接続基板、８・・・
・・・ＩＣを装着した基板、９・・・・・・駆動用ＩＣ
，１０・・・・・・ＩＣの信号入力端子、１）・・・・
・・ゲート走査線、１２・・・・・・信号線、１３・・
・・・・ＴＦＴ。
１４・・・・・・偏向板、１５・・・・・・反射板、１
６・・・・・・液晶。
第３図
ｆｆ−−−デー１Ｌｌ柊
１２−−−イτすｊ笈
７３−−−７Ｆ丁
’３．’：） ４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 TFT array having a liquid crystal panel with protruding electrodes and a bonding layer formed on the conductor terminal portion. DESCRIPTION OF SYMBOLS 1... TFT array substrate, 2... Conductor terminal portion, 3... Projection electrode, 4... Conductive bonding layer, 5...・Counter electrode, 6... 1st connection board, 7... 2nd connection board, 8...
... Board with IC installed, 9... Drive IC
,10...IC signal input terminal, 1)...
...Gate scanning line, 12...Signal line, 13...
...TFT. 14... Deflector plate, 15... Reflector plate, 1
6...LCD. Figure 3 ff---day 1Ll hiiragi 12---ii τsuj笈73---7F d'3. ':) Figure 4
Claims (5)
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。(1) A reflective liquid crystal display device in which an active switching element is formed in each display pixel, and a driving IC is provided on the back surface of the display panel.
利用し、しかも表示パネル基板とＩＣを装着している基
板との間に反射板と偏向板をもうけ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。(2) Claim 1, which utilizes the TN mode or guest-host mode of the liquid crystal, and further includes a reflecting plate and a deflecting plate between the display panel substrate and the substrate on which the IC is mounted. The reflective liquid crystal display device according to item (1).
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。(3) A reflective liquid crystal display device according to claim (1), wherein the active element is formed of a two-terminal element or a TFT element.
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。(4) A reflective liquid crystal display device according to claim (1), wherein the driving IC is provided on the back surface of the substrate on which the active elements are formed or the counter substrate.
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）項記載の反射型液晶表示デバイス。(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 in item 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9024287A JPS63254419A (en) | 1987-04-13 | 1987-04-13 | Reflection type liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9024287A JPS63254419A (en) | 1987-04-13 | 1987-04-13 | Reflection type liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63254419A true JPS63254419A (en) | 1988-10-21 |
Family
ID=13993027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9024287A Pending JPS63254419A (en) | 1987-04-13 | 1987-04-13 | Reflection type liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63254419A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497258A (en) * | 1994-05-27 | 1996-03-05 | The Regents Of The University Of Colorado | Spatial light modulator including a VLSI chip and using solder for horizontal and vertical component positioning |
| WO2015136411A1 (en) * | 2014-03-12 | 2015-09-17 | 株式会社半導体エネルギー研究所 | Electronic apparatus |
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 |
-
1987
- 1987-04-13 JP JP9024287A patent/JPS63254419A/en active Pending
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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497258A (en) * | 1994-05-27 | 1996-03-05 | The Regents Of The University Of Colorado | Spatial light modulator including a VLSI chip and using solder for horizontal and vertical component positioning |
| WO2015136411A1 (en) * | 2014-03-12 | 2015-09-17 | 株式会社半導体エネルギー研究所 | Electronic apparatus |
| US10228729B2 (en) | 2014-03-12 | 2019-03-12 | Semiconductor Energy Laboratory Co., Ltd. | Electronic device |
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