JP5951519B2 - Liquid crystal display - Google Patents

Liquid crystal display Download PDF

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JP5951519B2
JP5951519B2 JP2013027029A JP2013027029A JP5951519B2 JP 5951519 B2 JP5951519 B2 JP 5951519B2 JP 2013027029 A JP2013027029 A JP 2013027029A JP 2013027029 A JP2013027029 A JP 2013027029A JP 5951519 B2 JP5951519 B2 JP 5951519B2
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liquid crystal
adhesive tape
electrode
crystal display
opening
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JP2014157193A (en
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半田　正人
正人 半田
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Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Citizen Fine Device Co Ltd
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Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Citizen Fine Device Co Ltd
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Description

本発明は、液晶表示装置に関するものである。   The present invention relates to a liquid crystal display device.

例えば、液晶表示装置は、表面に画素電極を形成したシリコン基板と、表面に対向電極を形成したガラス基板とを、画素電極と対向電極が互いに対向するように所定の位置関係でシール材を介して貼り合わせ、貼り合わせることで生じた基板間の隙間に液晶を封入して液晶パネルを作成し、その液晶パネルを回路基板上に実装することで構成されている。   For example, in a liquid crystal display device, a silicon substrate having a pixel electrode formed on the surface and a glass substrate having a counter electrode formed on the surface are placed with a sealant in a predetermined positional relationship so that the pixel electrode and the counter electrode face each other. The liquid crystal panel is formed by sealing liquid crystal in a gap between the substrates generated by bonding, and the liquid crystal panel is mounted on a circuit board.

液晶パネルの画素電極への電位供給は、シリコン基板の画素電極が形成された側の面に設けられた電極パッドを回路基板上に設けられた電極パッドにワイヤーにて電気的に接続することで実現している。一方、対向電極への電位供給は、ガラス基板に形成された対向電極を回路基板上に設けられた電極パッドに導電媒体（導電性樹脂等）にて電気的に接続することで実現している。   The potential supply to the pixel electrode of the liquid crystal panel is achieved by electrically connecting the electrode pad provided on the surface of the silicon substrate on which the pixel electrode is formed to the electrode pad provided on the circuit board with a wire. Realized. On the other hand, the potential supply to the counter electrode is realized by electrically connecting the counter electrode formed on the glass substrate to an electrode pad provided on the circuit board with a conductive medium (conductive resin or the like). .

図９は従来技術による液晶表示装置を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図である。液晶パネル１はシリコン基板２とガラス基板３を備え、それらは互いに幅方向へオフセットした状態で所定の間隔で枠状のシール材５を介して貼り合わされている。ガラス基板３とシリコン基板２の互いに対向する表面にはそれぞれ液晶６に電圧をかけるためのＩＴＯ電極（対向電極）７と図示しない画素電極が形成されている。さらにＩＴＯ電極７と画素電極の上にはそれぞれ液晶６を配向させるための配向膜４が形成され、それらの間に液晶６が封入されて液晶パネル１が構成されている。   9A is a top view showing a liquid crystal display device according to the prior art, and FIG. 9B is a sectional view taken along line AA. The liquid crystal panel 1 includes a silicon substrate 2 and a glass substrate 3, which are bonded to each other with a frame-shaped sealing material 5 at a predetermined interval in a state offset from each other in the width direction. An ITO electrode (counter electrode) 7 for applying a voltage to the liquid crystal 6 and a pixel electrode (not shown) are formed on the surfaces of the glass substrate 3 and the silicon substrate 2 facing each other. Further, an alignment film 4 for aligning the liquid crystal 6 is formed on the ITO electrode 7 and the pixel electrode, respectively, and the liquid crystal 6 is sealed between them to constitute the liquid crystal panel 1.

液晶パネル１は回路基板８に両面粘着性の粘着テープ１２にて固定され、回路基板８上の電極パッド１０ａとシリコン基板２上の電極パッド２ａとがワイヤー９にて電気的に接続され、さらにガラス基板３上のＩＴＯ電極７と回路基板８上の電極パッド１０ｂとが導電性樹脂等の導電媒体１１にて電気的に接続されることで液晶表示装置が構成されている。尚、シリコン基板２上の電極パッド２ａは、ガラス基板３の端面から幅方向へ迫り出したシリコン基板２の一部（オフセット部）に並べて複数配置され、それぞれは図示しない配線等を介して画素電極と電気的に接続されている。   The liquid crystal panel 1 is fixed to the circuit board 8 with a double-sided adhesive tape 12, and the electrode pads 10a on the circuit board 8 and the electrode pads 2a on the silicon substrate 2 are electrically connected by wires 9, The ITO electrode 7 on the glass substrate 3 and the electrode pad 10b on the circuit board 8 are electrically connected by a conductive medium 11 such as a conductive resin to constitute a liquid crystal display device. A plurality of electrode pads 2a on the silicon substrate 2 are arranged side by side on a part (offset portion) of the silicon substrate 2 protruding in the width direction from the end face of the glass substrate 3, and each of them is a pixel via a wiring or the like (not shown). It is electrically connected to the electrode.

ここで、ワイヤー９は非常に細いアルミニウムなどで構成され、そのままでは劣化や断線の恐れがあるため、樹脂などの保護材料で被覆する必要がある。このためには、まずワイヤー９の周辺に粘度の比較的高いシリコン樹脂などでダム１３を形成し、ダム１３を硬化させた後にその内側にワイヤー保護材料１４を流し込む。ワイヤー保護材料１４には、ワイヤー９間の隙間に浸透し易い比較的粘度の低いものが使用される。尚、ダム１３は樹脂の代わりに、プラスチック成形部品などで形成することも可能である。（例えば、特許文献１参照）   Here, the wire 9 is made of very thin aluminum or the like, and may be deteriorated or disconnected as it is, so it needs to be covered with a protective material such as resin. For this purpose, first, the dam 13 is formed around the wire 9 with silicon resin having a relatively high viscosity, and after the dam 13 is cured, the wire protection material 14 is poured into the dam 13. As the wire protection material 14, a material having a relatively low viscosity that easily penetrates into the gaps between the wires 9 is used. The dam 13 can be formed of a plastic molded part or the like instead of the resin. (For example, see Patent Document 1)

特開２００６−３０８８２２号公報JP 2006-308822 A

従来技術では、ワイヤー保護材料１４をワイヤー９に塗布する前に、ワイヤー保護材料１４が他の領域に流れ出さないように、ワイヤー９の周辺に樹脂やプラスチック成形部品などでダムを形成する必要があるため、その分、部品点数や工数が増えてしまうという問題があった。   In the prior art, before applying the wire protective material 14 to the wire 9, it is necessary to form a dam with resin or plastic molded parts around the wire 9 so that the wire protective material 14 does not flow out to other areas. Therefore, there is a problem that the number of parts and man-hours increase accordingly.

本発明は以上の問題に鑑みてなされたもので、部品点数や工数の増加を抑えつつ、ワイヤー保護材料がワイヤー周辺へ流れ出すのを防止することが可能な液晶表示装置を提供することを目的とする。   The present invention has been made in view of the above problems, and an object thereof is to provide a liquid crystal display device capable of preventing the wire protective material from flowing out to the periphery of the wire while suppressing an increase in the number of parts and man-hours. To do.

液晶に電圧を印加するための第一電極を有する第一電極基板と、液晶に電圧を印加するための第二電極を有する第二電極基板とを、前記第一電極と前記第二電極が互いに対向するように所定の間隔で貼り合わせ、それにより形成された前記第一電極基板と前記第二電極基板との隙間に液晶を封入して液晶パネルを構成し、該液晶パネルを回路基板上に粘着テープにて固定し、前記液晶パネルと前記回路基板とをワイヤーにて電気的に接続し、該ワイヤーを保護材料で被覆した液晶表示装置であって、前記粘着テープの一部にて、前記保護材料の流出を防止する流出防止部が形成されている液晶表示装置とする。   A first electrode substrate having a first electrode for applying a voltage to the liquid crystal, and a second electrode substrate having a second electrode for applying a voltage to the liquid crystal, the first electrode and the second electrode being mutually A liquid crystal panel is formed by sealing liquid crystal in a gap between the first electrode substrate and the second electrode substrate formed so as to face each other at a predetermined interval, and the liquid crystal panel is placed on the circuit board. Fixing with an adhesive tape, electrically connecting the liquid crystal panel and the circuit board with a wire, and covering the wire with a protective material, a part of the adhesive tape, The liquid crystal display device is provided with an outflow prevention portion for preventing the protective material from flowing out.

前記流出防止部は、前記ワイヤーと前記回路基板との接続部を囲むように前記粘着テープに形成された開口部である液晶表示装置とすることができる。   The said outflow prevention part can be made into the liquid crystal display device which is the opening part formed in the said adhesive tape so that the connection part of the said wire and the said circuit board might be enclosed.

前記開口部の内周面には、凹凸が設けられている液晶表示装置とすることができる。   It can be set as the liquid crystal display device by which the internal peripheral surface of the said opening part is provided with the unevenness | corrugation.

前記粘着テープの前記開口部よりも外側の領域には、前記開口部と所定の間隔を空けて開口部が設けられている液晶表示装置とすることができる。   It can be set as the liquid crystal display device by which the opening part is provided in the area | region outside the said opening part of the said adhesive tape at predetermined intervals with the said opening part.

前記粘着テープの前記開口部周辺の領域には、粗面が設けられている液晶表示装置とすることができる。   It can be set as the liquid crystal display device by which the rough surface is provided in the area | region of the said opening part periphery of the said adhesive tape.

本発明によれば、液晶パネルを回路基板に固定する粘着テープの一部を利用してダムを形成することで、ダムを形成するための部品点数や工数を削減することができる。   According to the present invention, by forming a dam using a part of the adhesive tape that fixes the liquid crystal panel to the circuit board, it is possible to reduce the number of parts and the number of steps for forming the dam.

本発明による液晶表示装置の実施例１を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図(A) Top view and (b) AA sectional view showing Example 1 of the liquid crystal display device according to the present invention. 本発明の実施例１で使用される粘着テープを示す上面図The top view which shows the adhesive tape used in Example 1 of this invention 本発明による液晶表示装置の実施例２を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図(A) Top view which shows Example 2 of the liquid crystal display device by this invention, (b) AA sectional drawing 本発明の実施例２で使用される粘着テープを示す上面図The top view which shows the adhesive tape used in Example 2 of this invention 本発明による液晶表示装置の実施例３を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図(A) Top view and (b) AA sectional view showing a third embodiment of the liquid crystal display device according to the present invention. 本発明の実施例３で使用される粘着テープを示す上面図The top view which shows the adhesive tape used in Example 3 of this invention 本発明による液晶表示装置の実施例４を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図(A) Top view which shows Example 4 of the liquid crystal display device by this invention, (b) AA sectional drawing 本発明の実施例４で使用される粘着テープを示す（ａ）上面図、（ｂ）Ａ−Ａ断面図(A) Top view which shows the adhesive tape used in Example 4 of this invention, (b) AA sectional drawing 従来技術による液晶表示装置を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図(A) Top view, (b) AA sectional view showing a liquid crystal display device according to the prior art

図１は本発明による液晶表示装置の実施例１を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図であり、図２は本発明の実施例１で使用される粘着テープを示す上面図である。液晶パネル１はシリコン基板２とガラス基板３を備え、それらは互いに幅方向へオフセットした状態で所定の間隔で枠状のシール材５を介して貼り合わされている。ガラス基板３とシリコン基板２の互いに対向する表面にはそれぞれ液晶６に電圧をかけるためのＩＴＯ電極（対向電極）７と図示しない画素電極が形成されている。さらにＩＴＯ電極７と画素電極の上にはそれぞれ液晶６を配向させるための配向膜４が形成され、それらの間に液晶６が封入されて液晶パネル１が構成されている。ここまでの構成は従来技術と同様である。   1A is a top view showing a liquid crystal display device according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line AA. FIG. 2 is a top view showing an adhesive tape used in the first embodiment of the present invention. FIG. The liquid crystal panel 1 includes a silicon substrate 2 and a glass substrate 3, which are bonded to each other with a frame-shaped sealing material 5 at a predetermined interval in a state offset from each other in the width direction. An ITO electrode (counter electrode) 7 for applying a voltage to the liquid crystal 6 and a pixel electrode (not shown) are formed on the surfaces of the glass substrate 3 and the silicon substrate 2 facing each other. Further, an alignment film 4 for aligning the liquid crystal 6 is formed on the ITO electrode 7 and the pixel electrode, respectively, and the liquid crystal 6 is sealed between them to constitute the liquid crystal panel 1. The configuration up to here is the same as that of the prior art.

液晶パネル１は回路基板８に両面粘着性の粘着テープ１５にて固定されている。粘着テープ１５は液晶パネル１が貼付される領域から回路基板８上の電極パッド１０ａを越える位置まで延在し、その延在した部分に開口部１６が設けられ、回路基板８上の電極パッド１０ａを取り囲んでいる。回路基板８上の電極パッド１０ａとシリコン基板２上の電極パッド２ａとはワイヤー９にて電気的に接続され、さらにガラス基板３上のＩＴＯ電極７と回路基板８上の電極パッド１０ｂとは導電性樹脂等の導電媒体１１にて電気的に接続されている。尚、シリコン基板２上の電極パッド２ａは、ガラス基板３の端面から幅方向へ迫り出したシリコン基板２の一部（オフセット部）に並べて複数配置され、それぞれは図示しない配線等を介して画素電極と電気的に接続されている。   The liquid crystal panel 1 is fixed to the circuit board 8 with a double-sided adhesive tape 15. The adhesive tape 15 extends from a region where the liquid crystal panel 1 is pasted to a position beyond the electrode pad 10a on the circuit board 8, and an opening 16 is provided in the extended portion, and the electrode pad 10a on the circuit board 8 is provided. Surrounding. The electrode pad 10a on the circuit board 8 and the electrode pad 2a on the silicon substrate 2 are electrically connected by a wire 9, and the ITO electrode 7 on the glass substrate 3 and the electrode pad 10b on the circuit board 8 are electrically conductive. Are electrically connected by a conductive medium 11 such as a conductive resin. A plurality of electrode pads 2a on the silicon substrate 2 are arranged side by side on a part (offset portion) of the silicon substrate 2 protruding in the width direction from the end face of the glass substrate 3, and each of them is a pixel via a wiring or the like (not shown). It is electrically connected to the electrode.

ワイヤー９にはワイヤー保護材料１４が塗布されるが、塗布した際に粘着テープ１５に設けられた開口部１６の縁が段差となってダムの役割を果たし、ワイヤー保護材料１４が他の領域へ流れ出すのを防止する。   A wire protective material 14 is applied to the wire 9, but when applied, the edge of the opening 16 provided in the adhesive tape 15 forms a step to serve as a dam, and the wire protective material 14 moves to another region. Prevent outflow.

尚、開口部１６の周囲は粘着テープ１５で完全に囲まれているのが好ましいが、一部が途切れていてもよい。   In addition, although it is preferable that the circumference | surroundings of the opening part 16 are completely enclosed by the adhesive tape 15, a part may be interrupted.

図３は本発明による液晶表示装置の実施例２を示す（ａ）上面図、、（ｂ）Ａ−Ａ断面図であり、図４は本発明の実施例２で使用される粘着テープを示す上面図である。本実施例２は実施例１と同様の基本構成を備え、実施例１と異なるのは、液晶パネル１と回路基板８とが粘着テープ１７にて固定されている点である。粘着テープ１７には、実施例１で使用される粘着テープ１５と同様の開口部１６が設けられ、さらに開口部１６の内周面に複数の凹凸１９が設けられている。   3A is a top view showing a liquid crystal display device according to a second embodiment of the present invention, and FIG. 3B is a cross-sectional view taken along line AA. FIG. 4 shows an adhesive tape used in the second embodiment of the present invention. It is a top view. The second embodiment has the same basic configuration as the first embodiment, and differs from the first embodiment in that the liquid crystal panel 1 and the circuit board 8 are fixed by an adhesive tape 17. The adhesive tape 17 is provided with an opening 16 similar to the adhesive tape 15 used in Example 1, and a plurality of irregularities 19 are provided on the inner peripheral surface of the opening 16.

ワイヤー９に塗布されたワイヤー保護材料１４は、開口部１６の縁で塞き止められると同時に、開口部１６の内周面に設けられた複数の凹凸１９の隙間に浸透し、ワイヤー保護材料１４の流れ出しがより効果的に防止される。   The wire protective material 14 applied to the wire 9 is blocked at the edge of the opening 16 and at the same time penetrates into the gaps between the plurality of irregularities 19 provided on the inner peripheral surface of the opening 16. Is prevented more effectively.

尚、本実施例において、凹凸１９は開口部１６の内周面全体に設けられているが、凹凸１９は開口部１６の内周面の一部に設けられていてもよい。   In this embodiment, the unevenness 19 is provided on the entire inner peripheral surface of the opening 16, but the unevenness 19 may be provided on a part of the inner peripheral surface of the opening 16.

図５は本発明による液晶表示装置の実施例３を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図であり、図６は本発明の実施例３で使用される粘着テープを示す上面図である。本実施例３は実施例１と同様の基本構成を備え、実施例１と異なるのは、液晶パネル１と回路基板８とが粘着テープ２０にて固定されている点である。粘着テープ２０には、実施例１で使用される粘着テープ１５と同様の開口部１６が設けられ、さらにその外側に所定の間隔を空けてスリット（開口部）２１が設けられている。   5A is a top view showing a liquid crystal display device according to a third embodiment of the present invention, FIG. 5B is a cross-sectional view taken along line AA, and FIG. 6 is a top view showing an adhesive tape used in the third embodiment of the present invention. FIG. The third embodiment has the same basic configuration as that of the first embodiment, and differs from the first embodiment in that the liquid crystal panel 1 and the circuit board 8 are fixed by an adhesive tape 20. The adhesive tape 20 is provided with an opening 16 similar to that of the adhesive tape 15 used in Example 1, and further provided with slits (openings) 21 at a predetermined interval on the outer side thereof.

ワイヤー９に塗布されたワイヤー保護材料１４は、開口部１６の縁で塞き止められるが、仮にワイヤー保護材料１４が開口部１６の縁を超えたとしても、スリット２１の縁が第二のダムとしての役割を果たし、その先の領域へ流れ出すのを防止する。   The wire protective material 14 applied to the wire 9 is blocked by the edge of the opening 16, but even if the wire protective material 14 exceeds the edge of the opening 16, the edge of the slit 21 is the second dam. And prevent it from flowing into the area beyond it.

尚、本実施例において、スリット２１は開口部１６の長辺側にその長辺と平行となるように設けられているが、スリット２１は開口部１６の短辺側に設けられてもよい。また、開口部１６の長辺側と短辺側の両方にスリット２１を設ける場合には、それらは互いに接続されていてもよい。また、スリット２１は開口部１６と接続されていてもよい。   In this embodiment, the slit 21 is provided on the long side of the opening 16 so as to be parallel to the long side, but the slit 21 may be provided on the short side of the opening 16. Further, when the slits 21 are provided on both the long side and the short side of the opening 16, they may be connected to each other. Further, the slit 21 may be connected to the opening 16.

図７は本発明による液晶表示装置の実施例４を示す（ａ）上面図、（ｂ）Ａ−Ａ断面図であり、図８は本発明の実施例４で使用される粘着テープを示す（ａ）上面図、（ｂ）Ａ−Ａ断面図である。本実施例３は実施例１と同様の基本構成を備え、実施例１と異なるのは、液晶パネル１と回路基板８とが粘着テープ２２にて固定されている点である。粘着テープ２２には、実施例１で使用される粘着テープ１５と同様の開口部１６が設けられ、さらに液晶パネル１を接着する側の表面全体に粗面２３が設けられている。   7A is a top view showing a liquid crystal display device according to a fourth embodiment of the present invention, and FIG. 7B is a cross-sectional view taken along line AA. FIG. 8 shows an adhesive tape used in the fourth embodiment of the present invention. It is a top view and (b) AA sectional drawing. The third embodiment has the same basic configuration as that of the first embodiment, and differs from the first embodiment in that the liquid crystal panel 1 and the circuit board 8 are fixed by an adhesive tape 22. The adhesive tape 22 is provided with an opening 16 similar to the adhesive tape 15 used in Example 1, and further has a rough surface 23 on the entire surface to which the liquid crystal panel 1 is bonded.

ワイヤー９に塗布されたワイヤー保護材料１４は、開口部１６の縁で塞き止められるが、仮にワイヤー保護材料１４が開口部１６の縁を超えたとしても、粘着テープ２２の表面が粗面２３となっているため、ワイヤー保護材料１４はその先の領域へ流れ難くなる。   The wire protective material 14 applied to the wire 9 is blocked by the edge of the opening 16, but even if the wire protective material 14 exceeds the edge of the opening 16, the surface of the adhesive tape 22 is rough. Therefore, it becomes difficult for the wire protective material 14 to flow to the area beyond that.

尚、本実施例において、粗面２３は粘着テープ２２の液晶パネル１を接着する側の表面全体に設けられているが、粗面２３はワイヤー保護材料１４が触れる可能性の高い開口部１６周辺にのみ設けられていてもよい。   In this embodiment, the rough surface 23 is provided on the entire surface of the adhesive tape 22 on the side to which the liquid crystal panel 1 is bonded, but the rough surface 23 is around the opening 16 where the wire protective material 14 is likely to touch. It may be provided only in.

以上説明したように、本発明では液晶パネル１と回路基板８とを接着する粘着テープの一部を利用してダムを一体的に形成しているため、ダムを形成するための部品点数や工数の増加を抑えつつ、ワイヤー保護材料１４の流れ出しを防止することが可能である。   As described above, in the present invention, since the dam is integrally formed by using a part of the adhesive tape that bonds the liquid crystal panel 1 and the circuit board 8, the number of parts and man-hours for forming the dam are formed. It is possible to prevent the wire protective material 14 from flowing out while suppressing the increase in the amount of the wire.

１ 液晶パネル
２ シリコン基板
２ａ 電極パッド
３ ガラス基板
４ 配向膜
５ シール材
６ 液晶
７ ＩＴＯ電極（対向電極）
８ 回路基板
９ ワイヤー
１０ａ 電極パッド
１０ｂ 電極パッド
１１ 導電媒体
１２ 粘着テープ
１３ ダム
１４ ワイヤー保護材料
１５ 粘着テープ
１６ 開口部
１７ 粘着テープ
１９ 凹凸
２０ 粘着テープ
２１ スリット
２２ 粘着テープ
２３ 粗面 DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 2 Silicon substrate 2a Electrode pad 3 Glass substrate 4 Alignment film 5 Sealing material 6 Liquid crystal 7 ITO electrode (counter electrode)
DESCRIPTION OF SYMBOLS 8 Circuit board 9 Wire 10a Electrode pad 10b Electrode pad 11 Conductive medium 12 Adhesive tape 13 Dam 14 Wire protective material 15 Adhesive tape 16 Opening part 17 Adhesive tape 19 Concavity and convexity 20 Adhesive tape 21 Slit 22 Adhesive tape 23 Rough surface

Claims (5)

液晶に電圧を印加するための第一電極を有する第一電極基板と、液晶に電圧を印加するための第二電極を有する第二電極基板とを、前記第一電極と前記第二電極が互いに対向するように所定の間隔で貼り合わせ、それにより形成された前記第一電極基板と前記第二電極基板との隙間に液晶を封入して液晶パネルを構成し、該液晶パネルを回路基板上に粘着テープにて固定し、前記液晶パネルと前記回路基板とをワイヤーにて電気的に接続し、該ワイヤーを保護材料で被覆した液晶表示装置であって、
前記粘着テープの一部にて、前記保護材料の流出を防止する流出防止部が形成されていることを特徴とする液晶表示装置。 A first electrode substrate having a first electrode for applying a voltage to the liquid crystal, and a second electrode substrate having a second electrode for applying a voltage to the liquid crystal, the first electrode and the second electrode being mutually A liquid crystal panel is formed by sealing liquid crystal in a gap between the first electrode substrate and the second electrode substrate formed so as to face each other at a predetermined interval, and the liquid crystal panel is placed on the circuit board. A liquid crystal display device fixed with an adhesive tape, electrically connected to the liquid crystal panel and the circuit board with a wire, and coated with a protective material.
A liquid crystal display device, wherein an outflow prevention portion for preventing outflow of the protective material is formed in a part of the adhesive tape. 前記流出防止部は、前記ワイヤーと前記回路基板との接続部を囲むように前記粘着テープに形成された開口部であることを特徴とする請求項１に記載の液晶表示装置。   The liquid crystal display device according to claim 1, wherein the outflow prevention portion is an opening formed in the adhesive tape so as to surround a connection portion between the wire and the circuit board. 前記開口部の内周面には、凹凸が設けられていることを特徴とする請求項２に記載の液晶表示装置。   The liquid crystal display device according to claim 2, wherein unevenness is provided on an inner peripheral surface of the opening. 前記粘着テープの前記開口部よりも外側の領域には、前記開口部と所定の間隔を空けて開口部が設けられていることを特徴とする請求項２又は３に記載の液晶表示装置。   4. The liquid crystal display device according to claim 2, wherein an opening is provided in a region outside the opening of the adhesive tape at a predetermined interval from the opening. 5. 前記粘着テープの前記開口部周辺の領域には、粗面が設けられていることを特徴とする請求項２〜４の何れか一つに記載の液晶表示装置。   The liquid crystal display device according to claim 2, wherein a rough surface is provided in a region around the opening of the adhesive tape.
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