JP2923137B2 - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JP2923137B2 JP2923137B2 JP4252673A JP25267392A JP2923137B2 JP 2923137 B2 JP2923137 B2 JP 2923137B2 JP 4252673 A JP4252673 A JP 4252673A JP 25267392 A JP25267392 A JP 25267392A JP 2923137 B2 JP2923137 B2 JP 2923137B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display panel
- terminals
- conductive particles
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
Landscapes
- Liquid Crystal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、たとえば、携帯用ワ
ープロやパソコン等に用いられる液晶表示装置に関し、
特に、液晶表示パネルの電極端子とＴＣＰ(テープキャ
リヤーパッケージ)の端子とを接続する異方導電膜を改
良した液晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device used for, for example, a portable word processor or a personal computer.
In particular, the present invention relates to a liquid crystal display device having an improved anisotropic conductive film for connecting an electrode terminal of a liquid crystal display panel and a terminal of a TCP (tape carrier package).
【０００２】[0002]
【従来の技術】近年、ワープロやパソコン等の情報伝達
機器のパーソナル化が進み、その中でも、特に、液晶表
示装置は、低電圧駆動が可能なため、小型化が比較的容
易であり非常に多く使用されるに至っている。また、ご
く最近では、液晶表示装置のカラー表示の要求が強く、
一部では商品化され始めた。2. Description of the Related Art In recent years, personalization of information transmission devices such as word processors and personal computers has been advanced. Among them, in particular, liquid crystal display devices can be driven at a low voltage, so that miniaturization is relatively easy and very large. Has been used. In recent years, there has been a strong demand for color display of liquid crystal display devices,
Some have begun to be commercialized.
【０００３】ところが、液晶表示装置のカラー表示を行
う場合、白黒表示と異なり一つの表示画素がＲ・Ｇ・Ｂ
(赤・緑・青)の３色の部分から構成されているため、単
純マトリクス方式にて表示を行おうとすると、例えば、
６４０×４８０個の画素の表示画面を構成する場合に
は、上記液晶表示パネルのデータ線側(セグメント側)の
端子本数は、６４０×３本、すなわち白黒表示の表示パ
ネルに比べて３倍の１９２０本となる。このため、上記
液晶表示パネルのデータ線側の電極端子と、ＴＣＰ(テ
ープキャリヤーパッケージ)の端子との接続ピッチは、
白黒表示に比べて、約１／３になる。However, when a color display of a liquid crystal display device is performed, unlike a monochrome display, one display pixel is composed of R, G, and B pixels.
(Red / Green / Blue), it is composed of three colors, so if you try to display by simple matrix method, for example,
In the case of forming a display screen of 640 × 480 pixels, the number of terminals on the data line side (segment side) of the liquid crystal display panel is 640 × 3, that is, three times as large as that of a monochrome display panel. It becomes 1920. For this reason, the connection pitch between the electrode terminal on the data line side of the liquid crystal display panel and the terminal of the TCP (tape carrier package) is
It is about 1/3 compared to the monochrome display.
【０００４】この接続ピッチの縮小は、上記液晶表示パ
ネルとＴＣＰとの端子間接続を、技術的に困難にする。
このため、上記接続ピッチの縮小を抑えるために、デー
タ線側(セグメント側)の電極端子を一本おきに上下に振
り分けて、上記セグメント側の電極端子の接続ピッチ
を、白黒表示に比べて約(１／３)×２になるようにして
いた。[0004] The reduction in the connection pitch makes the connection between the terminals of the liquid crystal display panel and the TCP technically difficult.
For this reason, in order to suppress the reduction in the connection pitch, the electrode terminals on the data line side (segment side) are divided up and down every other electrode, and the connection pitch of the electrode terminals on the segment side is reduced by approximately (1/3) × 2.
【０００５】しかし、白黒表示の場合のように走査線側
(コモン側)の４８０本の電極端子を、所定の期間に２４
０本(１／２４０デューティ)ずつに分けて駆動すること
ができなくなり、４８０本の電極端子を所定の期間に４
８０本ずつ駆動(１／４８０デューティ)せざるを得なか
った。However, as in the case of black and white display, the scanning line side
(Common side) 480 electrode terminals
It is not possible to drive the electrodes in units of 0 (1/240 duty) at a time.
It had to be driven 80 times (1/480 duty) at a time.
【０００６】液晶表示装置の表示品位は、所定期間に駆
動しなければならない走査線側(コモン側)の電極本数が
小さい程、一つの走査線側の電極に割り当てることがで
きるオン時間が長くなるので、コントラストが良くな
り、応答速度が速くなり、クロストークが少なくなる等
して、表示品位が向上する。In the display quality of the liquid crystal display device, as the number of electrodes on the scanning line side (common side) which must be driven in a predetermined period is smaller, the ON time which can be assigned to one scanning line side electrode is longer. Therefore, the display quality is improved by improving the contrast, increasing the response speed, and reducing the crosstalk.
【０００７】つまり、１／２４０デューティ駆動に比べ
て、１／４８０デューティ駆動の表示品位は劣り、１／
４８０デューティ駆動方式をとらざるを得なかった上記
従来の単純マトリクス方式のカラー液晶表示装置は、必
ずしもユーザーを十分満足させることができなかった。That is, the display quality of the 1/480 duty drive is inferior to that of the 1/240 duty drive,
The above-described conventional simple matrix type color liquid crystal display device, which had to use the 480 duty drive method, could not always satisfy the user.
【０００８】ここで、液晶表示装置の端子間接続に用い
られる異方性導電膜の構造と、上記端子と端子との接続
ピッチが小さくなると端子間の接続が困難になる理由
を、以下に詳細に説明する。Here, the structure of the anisotropic conductive film used for the connection between the terminals of the liquid crystal display device and the reason why the connection between the terminals becomes difficult when the connection pitch between the terminals becomes small will be described in detail below. Will be described.
【０００９】一般に、液晶表示装置等に用いられる異方
導電膜は、図２に示すように、熱可塑性樹脂または熱硬
化性樹脂またはこれらの混合物３７に導電粒子３８をブ
レンドし成膜したものである。Generally, as shown in FIG. 2, an anisotropic conductive film used in a liquid crystal display device or the like is formed by blending conductive particles 38 with a thermoplastic resin or a thermosetting resin or a mixture 37 thereof. is there.
【００１０】図２に示すように、異方導電膜３１を液晶
表示パネル３２の電極端子３３とＴＣＰ３５の端子３６
との間に挟んで、上記異方導電膜３１に熱と圧力を加え
ることによって、上記異方導電膜３１を上記電極端子３
３とＴＣＰ３５の端子３６に固定し接着させることがで
きる。そして、上記異方導電膜３１に熱と圧力を加えた
ときに、上記異方導電膜３１が含む導電粒子３８が、上
記電極端子３３と端子３６との間で挟まれて圧着され
る。こうして、上記電極端子３３と端子３６とを電気的
に接続することができる。As shown in FIG. 2, an anisotropic conductive film 31 is connected to an electrode terminal 33 of a liquid crystal display panel 32 and a terminal 36 of a TCP 35.
And applying heat and pressure to the anisotropic conductive film 31, thereby connecting the anisotropic conductive film 31 to the electrode terminals 3.
3 and the terminal 36 of the TCP 35. Then, when heat and pressure are applied to the anisotropic conductive film 31, the conductive particles 38 included in the anisotropic conductive film 31 are sandwiched and pressed between the electrode terminals 33 and the terminals 36. Thus, the electrode terminal 33 and the terminal 36 can be electrically connected.
【００１１】ところが、上記液晶表示装置の異方導電膜
３１は、上記液晶表示パネル３２の電極端子３３のピッ
チが狭くなるにしたがって、上記電極端子３３間の導電
粒子３８同士が連結してしまい、表示させたい画素以外
の画素が表示する現象(リーク)が発生するという問題が
あった。また、上記リークをなくするために、上記導電
粒子３８の数を減らすと、表示させたい画素が表示しな
くなる現象(オープン)が発生するという問題があった。However, in the anisotropic conductive film 31 of the liquid crystal display device, as the pitch of the electrode terminals 33 of the liquid crystal display panel 32 becomes narrower, the conductive particles 38 between the electrode terminals 33 are connected to each other. There is a problem that a phenomenon (leak) that pixels other than the pixel to be displayed are displayed occurs. In addition, when the number of the conductive particles 38 is reduced to eliminate the leak, there is a problem that a pixel to be displayed is not displayed (open).
【００１２】そこで、上記問題を解決するために、図３
に示すように、上記異方導電膜３１の上記導電粒子３８
を、導電粒子４０に絶縁被膜４１をコーティングした絶
縁被覆導電粒子４２に替えて、上記リークをなくするよ
うにした液晶表示装置がある。In order to solve the above problem, FIG.
As shown in the figure, the conductive particles 38 of the anisotropic conductive film 31
There is a liquid crystal display device in which the above-described leak is eliminated by replacing the conductive particles 40 with insulating coated conductive particles 42 in which an insulating film 41 is coated.
【００１３】ところが、上記液晶表示装置では、従来通
常に用いられている温度と圧力を異方導電膜３１に加え
ただけでは、上記絶縁被膜４１が十分に除去されないた
め、接続すべきでない端子間の絶縁は十分に達成される
が、接続すべき端子同士の導通抵抗が比較的大きくなっ
てしまい、表示機能が低下するという問題がある。ま
た、この問題を解決するために、従来以上の高温度と高
圧力を、上記異方導電膜３１に加えると液晶表示パネル
３２のパネルガラスが割れる等、液晶表示装置が破損す
ることがあり、量産性に欠けるという問題がある。However, in the above-mentioned liquid crystal display device, the insulating film 41 is not sufficiently removed by simply applying the temperature and pressure, which are conventionally used, to the anisotropic conductive film 31. Is sufficiently achieved, but there is a problem that the conduction resistance between the terminals to be connected becomes relatively large and the display function is deteriorated. Further, in order to solve this problem, if a higher temperature and pressure than conventional ones are applied to the anisotropic conductive film 31, the liquid crystal display device may be damaged, such as breaking the panel glass of the liquid crystal display panel 32, There is a problem of lack of mass productivity.
【００１４】[0014]
【発明が解決しようとする課題】そこで、この発明の目
的は、液晶表示パネルのデータ線側のピッチが小さくな
っても、リークやオープンを招くことがない確実な端子
接続ができる液晶表示装置を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a liquid crystal display device capable of reliably connecting terminals without causing leakage or opening even if the pitch of the data lines on the liquid crystal display panel is reduced. To provide.
【００１５】[0015]
【課題を解決するための手段】上記目的を達成するた
め、この発明の液晶表示装置は、液晶表示パネルと、上
記液晶表示パネルに信号を送る信号送信装置からの信号
を上記液晶表示パネルに伝達するための薄板状のテープ
キャリヤーパッケージと、上記液晶表示パネルの電極端
子と上記テープキャリヤーパッケージの端子とを接続す
る異方導電膜とを備え、上記異方導電膜に、導電粒子に
絶縁被膜をコーティングした絶縁被覆導電粒子と、絶縁
被膜をコーティングしない導電粒子とを混在させたこと
を特徴としている。In order to achieve the above object, a liquid crystal display device of the present invention transmits a signal from a liquid crystal display panel and a signal transmission device for sending a signal to the liquid crystal display panel to the liquid crystal display panel. A tape carrier package in the form of a thin plate, and an anisotropic conductive film for connecting an electrode terminal of the liquid crystal display panel to a terminal of the tape carrier package. It is characterized in that the coated insulating coated conductive particles and the conductive particles not coated with the insulating coating are mixed.
【００１６】[0016]
【作用】上記異方導電膜を普通の熱圧着条件で熱圧着す
ることによって、上記異方導電膜の導電粒子が、液晶表
示パネルの電極端子と、この電極端子に接続すべきテー
プキャリヤーパッケージの端子と間で挟まれて、上記電
極端子と上記端子との電気的接続を実現する。また、上
記異方導電膜の絶縁被覆導電粒子が、電気的に接続すべ
きでない端子間に介在して、上記端子間の電気的絶縁を
十分に維持する。The conductive particles of the anisotropic conductive film are bonded to the electrode terminals of the liquid crystal display panel and the tape carrier package to be connected to the electrode terminals by thermocompression bonding of the anisotropic conductive film under ordinary thermocompression bonding conditions. Electrical connection between the electrode terminals and the terminals is realized by being sandwiched between the terminals. Further, the insulating coated conductive particles of the anisotropic conductive film are interposed between terminals that should not be electrically connected, and sufficiently maintain electrical insulation between the terminals.
【００１７】[0017]
【実施例】以下、この発明を図示の実施例により詳細に
説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
【００１８】図１に示すように、この実施例の液晶表示
装置の液晶表示パネルＢの電極端子７は、液晶表示パネ
ルガラス８にＩＴＯ(インヂウム・チィン・オキサイド)
を蒸着し、エッチング加工したものとした。また、上記
電極端子７のピッチを８５μmとした。As shown in FIG. 1, the electrode terminals 7 of the liquid crystal display panel B of the liquid crystal display device of this embodiment are formed by mounting ITO (Indium Tin Oxide) on the liquid crystal display panel glass 8.
Was vapor-deposited and etched. The pitch of the electrode terminals 7 was 85 μm.
【００１９】一方、上記液晶表示パネルＢに信号を送る
信号送信装置からの信号を上記液晶表示パネルＢに伝達
するためのテープキャリアパッケージＡとしては、ユー
ピレックスフィルム５(７５μm厚)に銅箔を貼りエッチ
ング加工したものを用いた。上記エッチング加工された
銅箔は、表面にスズメッキが施されて、電極ピッチが８
５μmの端子６となる。On the other hand, as a tape carrier package A for transmitting a signal from a signal transmitting device for transmitting a signal to the liquid crystal display panel B to the liquid crystal display panel B, an upilex film 5 (75 μm thick) is formed of copper foil. Was used after etching. The etched copper foil is plated with tin on the surface and has an electrode pitch of 8
It becomes the terminal 6 of 5 μm.
【００２０】上記液晶表示パネルＢの電極端子７と、上
記テープキャリアパッケージＡの端子６とを接続する異
方導電膜１は、熱可塑性樹脂と熱硬化性樹脂とを、約
１:１の割合で混合して作製した混合樹脂２に、導電粒
子３に絶縁被膜１１をコーティングした絶縁被覆導電粒
子４と、絶縁被覆を施していない導電粒子３とを３:１
の割合で混合したものを添加したものである。上記絶縁
被覆導電粒子４と導電粒子３とを加えた重量は、上記混
合樹脂２の重量に対して１５％になるようにしている。
つまり、上記粒子４,３は、上記混合樹脂２に対して１
５wt％(ウェイトパーセント)になるようにブレンドされ
ている。The anisotropic conductive film 1, which connects the electrode terminals 7 of the liquid crystal display panel B and the terminals 6 of the tape carrier package A, comprises a thermoplastic resin and a thermosetting resin in a ratio of about 1: 1. In the mixed resin 2 prepared by mixing in step (3), the conductive particles 3 in which the insulating film 11 is coated on the conductive particles 3 and the conductive particles 3 without the insulating coating are mixed in a ratio of 3: 1.
The mixture obtained by mixing at a ratio of 2 is added. The combined weight of the insulating coated conductive particles 4 and the conductive particles 3 is set to 15% with respect to the weight of the mixed resin 2.
That is, the particles 4 and 3 are 1: 1 with respect to the mixed resin 2.
Blended to be 5 wt% (weight percent).
【００２１】上記異方導電膜１は、液晶表示パネルＢの
電極端子７と上記テープキャリアパッケージＡの端子６
との間に挟んで、上記端子６の上からパルスヒート熱圧
着機にて２００℃,３０kg／cm2の熱圧着条件にて熱圧着
を行った。The anisotropic conductive film 1 comprises an electrode terminal 7 of the liquid crystal display panel B and a terminal 6 of the tape carrier package A.
Then, the terminal 6 was subjected to thermocompression bonding from above the terminal 6 using a pulse heat thermocompression bonding machine under the conditions of 200 ° C. and 30 kg / cm 2 thermocompression bonding.
【００２２】上記異方導電膜１を上記普通の熱圧着条件
で熱圧着することによって、図１に示すように、上記異
方導電膜１の導電粒子３が、液晶表示パネルＢの電極端
子７と、この電極端子７に接続すべきテープキャリヤー
パッケージＡの端子６と間で挟まれて、上記電極端子７
と上記端子６との電気的接続を確実に実現する。また、
上記異方導電膜１の絶縁被覆導電粒子４が、電気的に接
続すべきでない端子間(たとえば、電極端子７と７との
間や端子６と６との間あるいは、対向していない電極端
子７と端子６との間)に介在して、上記端子間の電気的
絶縁を十分に維持する。 したがって、この実施例によ
れば、上記電極端子７,７間のピッチが小さくなって
も、上記電極端子７,７間のリークの発生を防止できる
と共に、上記電極端子７と端子６との間の導通不良が発
生することを防止できる。As shown in FIG. 1, the conductive particles 3 of the anisotropic conductive film 1 are bonded to the electrode terminals 7 of the liquid crystal display panel B by thermocompression bonding of the anisotropic conductive film 1 under the normal thermocompression bonding conditions. And the terminal 6 of the tape carrier package A to be connected to the electrode terminal 7.
And the terminal 6 is reliably connected electrically. Also,
The insulating coating conductive particles 4 of the anisotropic conductive film 1 are not electrically connected between terminals (for example, between electrode terminals 7 and 7, between terminals 6 and 6, or between electrode terminals that do not face each other). 7 and the terminal 6) to sufficiently maintain the electrical insulation between the terminals. Therefore, according to this embodiment, even if the pitch between the electrode terminals 7 and 7 is reduced, it is possible to prevent the occurrence of leakage between the electrode terminals 7 and 7 and to reduce the distance between the electrode terminals 7 and 6. Can be prevented from occurring.
【００２３】したがって、この実施例によれば、カラー
表示のために、上記電極端子７の本数を増加し、液晶表
示パネルＢのデータ線側のピッチが１０本／mm〜１２本
／mmまで小さくなっても、リークやオープンを招くこと
がない確実な端子接続ができる液晶表示装置を実現でき
る。Therefore, according to this embodiment, for the color display, the number of the electrode terminals 7 is increased, and the pitch on the data line side of the liquid crystal display panel B is reduced from 10 lines / mm to 12 lines / mm. Even if this is the case, it is possible to realize a liquid crystal display device capable of reliably connecting terminals without causing leakage or opening.
【００２４】また、図１に示した上記実施例(異方導電
膜が絶縁被覆導電粒子と導電粒子を含む。)と、図２に
示した従来例(異方導電膜が導電粒子のみを含む。)図３
に示した従来例(異方性導電膜が絶縁被覆導電粒子のみ
を含む。)とを、通電テストしたところ、上記実施例
は、テストした１０台中１台もリークが発生せず、接続
抵抗も１オーム以下で安定していた。Further, the above-mentioned embodiment shown in FIG. 1 (the anisotropic conductive film contains insulating coated conductive particles and conductive particles) and the conventional example shown in FIG. 2 (the anisotropic conductive film contains only conductive particles) FIG. 3
When a current test was performed with the conventional example (the anisotropic conductive film contains only insulating-coated conductive particles), no leakage occurred in any one of the ten tested devices, and the connection resistance was also low. It was stable at less than 1 ohm.
【００２５】これにたいし、図２の従来例は、接続抵抗
が１オーム以下で安定していたが、テストした１０台中
１０台とも１から１０箇所にリークが発生した。このリ
ークの原因は、導電粒子の分散の不均一な箇所で導電粒
子がつながったり、異物で樹脂の流れがせき止められ導
電粒子が集合することによるものであった。On the other hand, in the conventional example shown in FIG. 2, the connection resistance was stable at 1 ohm or less, but leak occurred at 1 to 10 places in all 10 of the 10 tested. The cause of this leak was that the conductive particles were connected at a portion where the dispersion of the conductive particles was uneven, or that the flow of the resin was blocked by foreign substances and the conductive particles were aggregated.
【００２６】また、図３の従来例は、テストした１０台
中リークしたものはなかったが、接続抵抗が比較的高
く、４〜６オームであった。Further, in the conventional example shown in FIG. 3, although there was no leak among the ten units tested, the connection resistance was relatively high and was 4 to 6 ohms.
【００２７】上記実験からも明らかなように、この実施
例によれば、カラー表示のために、上記電極端子７の本
数を増加し、液晶表示パネルＢのデータ線側のピッチが
１０本／mm〜１２本／mmまで小さくなっても、従来例と
異なり、リークやオープンを招くことがない確実な端子
接続ができる液晶表示装置を実現できる。As is clear from the above experiment, according to this embodiment, the number of the electrode terminals 7 is increased for color display, and the pitch of the liquid crystal display panel B on the data line side is 10 lines / mm. Even if the size is reduced to about 12 lines / mm, unlike the conventional example, a liquid crystal display device capable of securely connecting terminals without causing leakage or opening can be realized.
【００２８】したがって、１／２４０デューティ駆動の
カラー表示が可能になり、表示品位の優れたカラー液晶
表示装置を実現することができる。Accordingly, color display with 1/240 duty drive is possible, and a color liquid crystal display device with excellent display quality can be realized.
【００２９】尚、上記実施例では、絶縁被覆導電粒子４
と導電粒子３との比率を３:１とし、また、上記粒子４,
３が異方導電膜１の樹脂２にたいする配合比率を１５wt
％にしたが、これらの比率の最適値が導電粒子および絶
縁コート被膜および樹脂２の種類等によって異なるの
で、特に上記値に限るものではない。In the above embodiment, the insulating coated conductive particles 4
And the ratio of the conductive particles 3 to 3: 1.
3 is 15 wt% of the anisotropic conductive film 1 with respect to the resin 2.
However, since the optimum values of these ratios vary depending on the types of the conductive particles, the insulating coating film, the resin 2 and the like, the ratios are not particularly limited to the above values.
【００３０】[0030]
【発明の効果】以上より明らかなように、この発明の液
晶表示装置は、液晶表示パネルの電極端子とテープキャ
リヤーパッケージの端子とを接続する異方導電膜に、導
電粒子に絶縁被膜をコーティングした絶縁被覆導電粒子
と、絶縁被膜をコーティングしない導電粒子とを混在さ
せている。As is apparent from the above description, in the liquid crystal display device of the present invention, conductive particles are coated with an insulating film on the anisotropic conductive film connecting the electrode terminals of the liquid crystal display panel and the terminals of the tape carrier package. Insulating coated conductive particles and conductive particles not coated with an insulating film are mixed.
【００３１】したがって、上記異方導電膜を普通の熱圧
着条件で熱圧着することによって、上記異方導電膜の導
電粒子が、液晶表示パネルの電極端子と、この電極端子
に接続すべきテープキャリヤーパッケージの端子と間で
挟まれて、上記電極端子と上記端子との確実な電気的接
続を実現する。また、上記異方導電膜の絶縁被覆導電粒
子が、電気的に接続すべきでない端子間に介在して、上
記端子間の電気的絶縁を十分に維持する。Therefore, the conductive particles of the anisotropic conductive film are bonded to the electrode terminals of the liquid crystal display panel and the tape carrier to be connected to the electrode terminals by thermocompression bonding of the anisotropic conductive film under ordinary thermocompression bonding conditions. The electrode terminal is sandwiched between the terminals of the package to realize a reliable electrical connection between the electrode terminal and the terminal. Further, the insulating coated conductive particles of the anisotropic conductive film are interposed between terminals that should not be electrically connected, and sufficiently maintain the electrical insulation between the terminals.
【００３２】したがって、この発明によれば、カラー表
示のために、電極端子の本数を増加し、液晶表示パネル
のデータ線側のピッチが小さくなっても、従来例と異な
り、リークやオープンを招くことがない確実な端子接続
ができる液晶表示装置を実現できる。Therefore, according to the present invention, even if the number of electrode terminals is increased for color display and the pitch on the data line side of the liquid crystal display panel is reduced, leakage and open are caused unlike the conventional example. It is possible to realize a liquid crystal display device capable of surely connecting terminals without any problem.
【００３３】したがって、１／２４０デューティ駆動の
カラー表示が可能になり、表示品位の優れたカラー液晶
表示装置を実現することができる。Therefore, color display with 1/240 duty drive is possible, and a color liquid crystal display device with excellent display quality can be realized.
【図１】 この発明の液晶表示装置の実施例の要部をし
めす断面図である。FIG. 1 is a sectional view showing a main part of an embodiment of a liquid crystal display device of the present invention.
【図２】 従来例の断面図である。FIG. 2 is a sectional view of a conventional example.
【図３】 従来例の断面図である。FIG. 3 is a sectional view of a conventional example.
１…異方導電膜、２…樹脂、３…導電粒子、４…絶縁被
覆導電粒子、５…ユーピレックスフィルム、６…端子、
７…電極端子、８…液晶表示パネルガラス、１１…絶縁
被覆。DESCRIPTION OF SYMBOLS 1 ... Anisotropic conductive film, 2 ... resin, 3 ... conductive particles, 4 ... insulating coating conductive particles, 5 ... Upilex film, 6 ... terminal,
7: electrode terminal, 8: liquid crystal display panel glass, 11: insulating coating.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G02F 1/1345 H05K 1/14 H05K 3/36 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) G02F 1/1345 H05K 1/14 H05K 3/36
Claims (1)
に信号を送る信号送信装置からの信号を上記液晶表示パ
ネルの電極端子に入力するための薄板状のテープキャリ
ヤーパッケージと、上記液晶表示パネルの電極端子と上
記テープキャリヤーパッケージの端子とを接続する異方
導電膜とを備え、 上記異方導電膜に、 導電粒子に絶縁被膜をコーティングした絶縁被覆導電粒
子と、絶縁被膜をコーティングしない導電粒子とを混在
させたことを特徴とする液晶表示装置。1. A liquid crystal display panel, a thin tape carrier package for inputting a signal from a signal transmission device for transmitting a signal to the liquid crystal display panel to an electrode terminal of the liquid crystal display panel, and a liquid crystal display panel. An anisotropic conductive film for connecting an electrode terminal and a terminal of the tape carrier package; an insulating coated conductive particle obtained by coating the conductive particles with an insulating coating; and an electrically conductive particle not coated with the insulating coating. A liquid crystal display device characterized by having a mixture of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4252673A JP2923137B2 (en) | 1992-09-22 | 1992-09-22 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4252673A JP2923137B2 (en) | 1992-09-22 | 1992-09-22 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06102523A JPH06102523A (en) | 1994-04-15 |
| JP2923137B2 true JP2923137B2 (en) | 1999-07-26 |
Family
ID=17240649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4252673A Expired - Fee Related JP2923137B2 (en) | 1992-09-22 | 1992-09-22 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2923137B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1489695B1 (en) | 2002-03-04 | 2008-09-10 | Sumitomo Electric Industries, Ltd. | Anisotropic conductive film and method for producing the same |
| KR100637429B1 (en) | 2003-10-24 | 2006-10-20 | 삼성에스디아이 주식회사 | Plasma display device |
| KR100852371B1 (en) * | 2005-08-04 | 2008-08-14 | 엔이씨 엘씨디 테크놀로지스, 엘티디. | Display device having an anisotropic conductive adhesive film |
| JP2007041389A (en) | 2005-08-04 | 2007-02-15 | Nec Lcd Technologies Ltd | Display device and its manufacturing method |
| JP6715052B2 (en) * | 2016-03-25 | 2020-07-01 | デクセリアルズ株式会社 | Method for manufacturing connection structure |
-
1992
- 1992-09-22 JP JP4252673A patent/JP2923137B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06102523A (en) | 1994-04-15 |
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