JPH06186580A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH06186580A JPH06186580A JP33749292A JP33749292A JPH06186580A JP H06186580 A JPH06186580 A JP H06186580A JP 33749292 A JP33749292 A JP 33749292A JP 33749292 A JP33749292 A JP 33749292A JP H06186580 A JPH06186580 A JP H06186580A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- insulating film
- display device
- crystal display
- driver circuit
- 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
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Thin Film Transistor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アクティブマトリック
ス型液晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an active matrix type liquid crystal display device.
【０００２】[0002]
【従来の技術】従来の液晶表示装置の一例を図１を用い
て説明する。2. Description of the Related Art An example of a conventional liquid crystal display device will be described with reference to FIG.
【０００３】この図は液晶表示装置の外観図である。This figure is an external view of a liquid crystal display device.
【０００４】ガラス、石英等の基板１０１上に画素エリ
ア１０５を図１（ａ）のように配置し、この画素部の周
辺に薄膜トランジスタの集積回路からなるドライバー回
路１０３、１０４を配置している。対向基板１０２は、
画素エリア１０５とドライバー回路１０３、１０４の間
にその縁が位置するように、紫外線硬化樹脂等のシール
材１０６により基板１０１に固定されている。また対向
基板の透明電極の電位は導電性接着剤によって基板側の
パッド１０７を通してコモン電位に固定されている。A pixel area 105 is arranged on a substrate 101 made of glass, quartz or the like as shown in FIG. 1A, and driver circuits 103 and 104 composed of thin film transistor integrated circuits are arranged around the pixel portion. The counter substrate 102 is
The pixel area 105 and the driver circuits 103 and 104 are fixed to the substrate 101 by a sealing material 106 such as an ultraviolet curable resin so that the edge thereof is located between the driver areas 103 and 104. The potential of the transparent electrode of the counter substrate is fixed to the common potential through the pad 107 on the substrate side by the conductive adhesive.
【０００５】これは素子基板１０１と対向基板１０２の
間に封入されている液晶に水分等が流入するのをできる
だけ避けるためであり、更にドライバー回路、或いはそ
の周辺には電源と同じ電位持つ配線があるのでそれによ
って液晶に電界をかけないためである。This is to prevent water and the like from flowing into the liquid crystal sealed between the element substrate 101 and the counter substrate 102 as much as possible, and further, a wiring having the same potential as the power source is provided in the driver circuit or its periphery. This is because an electric field is not applied to the liquid crystal due to this.
【０００６】この図１のＡ−Ａ’の部分での構造断面図
を図１（ｂ）に示した。基板１０１上に多結晶シリコン
等による薄膜トランジスタ１１３が形成されている。薄
膜トランジスタ、ソース配線、画素電極１１４は第２層
間絶縁膜１２０に覆われてはいるが、画素電極１１４の
上部は開孔されている。このトランジスタのゲート電極
は最終的に終端部１１６でコンタクトホールを介して配
線１１７に接続しており、配線１１７は対向基板端部よ
り外側に形成されたトランジスタの集積回路からなるド
ライバー回路１０３と接続している。FIG. 1 (b) is a sectional view of the structure taken along the line AA 'in FIG. A thin film transistor 113 made of polycrystalline silicon or the like is formed on the substrate 101. The thin film transistor, the source line, and the pixel electrode 114 are covered with the second interlayer insulating film 120, but the upper portion of the pixel electrode 114 is opened. The gate electrode of this transistor is finally connected to the wiring 117 at the terminal end portion 116 through the contact hole, and the wiring 117 is connected to the driver circuit 103 formed of an integrated circuit of the transistor formed outside the end portion of the counter substrate. is doing.
【０００７】対向基板１０２には透明電極１１１が全面
に形成されており、紫外線硬化樹脂等のシール材１０６
により基板に固定されている。基板１０１、対向基板１
０２をポリイミド等の配向膜１１２で覆っている。A transparent electrode 111 is formed on the entire surface of the counter substrate 102, and a sealing material 106 such as an ultraviolet curable resin is formed.
It is fixed to the substrate by. Substrate 101, counter substrate 1
02 is covered with an alignment film 112 such as polyimide.
【０００８】また図１のＢ−Ｂ’の部分での構造断面図
を図１（ｃ）に示した。基板１０１上の第１層間絶縁膜
１１９の上層に配線３０６が形成されており、これらは
更に酸化シリコン等の第２層間絶縁膜１２０で覆われて
いるが、パッド１０７上は開孔してある。この上にポリ
イミド等の配向膜１１２を塗布してある。このパッド１
０７はコモン電位になるように配線されているので、こ
の部分に導電性接着剤１１８を塗布し、対向基板１０２
を圧着すると対向基板の対向電極１１１はこれによりコ
モン電位となる。Further, FIG. 1C shows a structural sectional view taken along the line BB 'in FIG. Wirings 306 are formed in the upper layer of the first interlayer insulating film 119 on the substrate 101, and these are further covered with a second interlayer insulating film 120 such as silicon oxide, but an opening is formed on the pad 107. . An alignment film 112 of polyimide or the like is applied on this. This pad 1
Since 07 is wired so as to have a common potential, the conductive adhesive 118 is applied to this portion, and the counter substrate 102
When is pressed, the counter electrode 111 of the counter substrate becomes a common potential.
【０００９】また図２はこの液晶表示装置の斜視図であ
る。FIG. 2 is a perspective view of this liquid crystal display device.
【００１０】このようにシール２０５を横切る配線は最
低でもゲート線とソース線の数だけある。As described above, the number of wirings that cross the seal 205 is at least the number of gate lines and source lines.
【００１１】[0011]
【発明が解決しようとする課題】しかしながら従来の技
術では、ドライバー回路は対向基板の外部に配置されて
いるため、パネル組立時にドライバー回路を破損し歩留
まりを下げてしまうことがあった。またドライバー回路
がシールエリア外部に配置されているため装置全体が大
型になってしまっていた。However, in the prior art, since the driver circuit is arranged outside the counter substrate, the driver circuit may be damaged at the time of panel assembly and the yield may be reduced. In addition, the driver circuit was placed outside the seal area, which made the entire device large.
【００１２】[0012]
【課題を解決するための手段】本発明では第２層間絶縁
膜として透明有機絶縁膜を用いソース配線と画素電極を
別層に分離し、更に前記有機膜のシールエリア下部を剥
離し、ドライバー回路はシールエリア下部に配置するこ
とを特徴とする。According to the present invention, a transparent organic insulating film is used as a second interlayer insulating film to separate a source wiring and a pixel electrode into separate layers, and a lower portion of a sealing area of the organic film is peeled off to form a driver circuit. Is located below the seal area.
【００１３】[0013]
【実施例】以下実施例に基づいて本発明を詳しく説明す
る。EXAMPLES The present invention will be described in detail based on the following examples.
【００１４】図３の（ａ）は本発明による液晶表示装置
の外観図である。基板上に形成された画素エリアの外週
で、且つシールエリア下部にドライバー回路を配置して
ある。FIG. 3A is an external view of a liquid crystal display device according to the present invention. A driver circuit is arranged outside the pixel area formed on the substrate and below the seal area.
【００１５】図３の（ｂ）は図３の（ａ）のＡ−Ａ’に
於ける構造断面図である。基板１０１上に画素トランジ
スタ１０２が形成されている。シールエリアと画素部の
中程にはトランジスタの集積回路からなるドライバー回
路が配置されており、これら素子基板をポリイミド等の
透明有機絶縁膜によって覆っている。この透明有機絶縁
膜の上にＩＴＯ等の画素電極が形成されており、画素ト
ランジスタのドレイン電極とコンタクトホールを介して
接続されている。またドライバー回路はシールエリア下
部に配置されており、回路上部の透明有機絶縁膜は剥離
されている。画素部からシールエリアに渡って配向膜に
覆われている。FIG. 3B is a structural sectional view taken along the line AA 'in FIG. The pixel transistor 102 is formed on the substrate 101. A driver circuit composed of an integrated circuit of a transistor is arranged in the middle of the seal area and the pixel portion, and these element substrates are covered with a transparent organic insulating film such as polyimide. A pixel electrode such as ITO is formed on the transparent organic insulating film and is connected to the drain electrode of the pixel transistor through a contact hole. Further, the driver circuit is arranged below the seal area, and the transparent organic insulating film above the circuit is peeled off. The alignment film covers the pixel area and the seal area.
【００１６】この時入射光は対向基板側から液晶表示装
置を透過することになるが、対向基板にはブラックマト
リックス等の遮光層があり、ドライバー回路には照射さ
れない。At this time, incident light is transmitted through the liquid crystal display device from the counter substrate side, but the counter substrate has a light shielding layer such as a black matrix and is not irradiated to the driver circuit.
【００１７】また図３の（ｃ）は図３の（ａ）のＢ−
Ｂ’に於ける構造断面図である。Further, FIG. 3 (c) shows B- of FIG. 3 (a).
It is a structure sectional view in B '.
【００１８】対向基板の対向電極はドライバー回路付近
に形成されたコモン電位を持つ電極に付けられた導電性
接着剤３１９により接続され、コモン電位に固定され
る。The counter electrode of the counter substrate is connected by a conductive adhesive 319 attached to an electrode having a common potential formed in the vicinity of the driver circuit and fixed at the common potential.
【００１９】この場合の液晶表示装置の全体は図４に示
したように、ドライバー回路をシールエリア下部に配置
したことによりＤ１及びＤ２の幅の分だけ小型となって
いる。As shown in FIG. 4, the entire liquid crystal display device in this case is reduced in size by the width of D1 and D2 by disposing the driver circuit below the seal area.
【００２０】またドライバー回路をシールエリア下部に
配置したため必然的にシールの幅は広くなるが、水分等
の液晶への流入を抑えることができる。Further, since the driver circuit is arranged below the seal area, the width of the seal is inevitably widened, but it is possible to suppress the inflow of water or the like into the liquid crystal.
【００２１】[0021]
【発明の効果】本発明の液晶表示装置の構造をとること
により、次に述べる効果がある。The structure of the liquid crystal display device of the present invention has the following effects.
【００２２】ドライバー回路がシールエリア下部に配置
されたことで液晶表示装置全体をこれまでのものより小
型にすることができる。Since the driver circuit is arranged below the seal area, the entire liquid crystal display device can be made smaller than the conventional one.
【００２３】ドライバー回路をシールエリア下部に配置
したために、シールの幅は従来技術による液晶表示装置
に比べ、広くなる。そのため水分が内部の液晶に流入し
難く、液晶の劣化が少ない。Since the driver circuit is arranged below the seal area, the width of the seal becomes wider than that of the conventional liquid crystal display device. Therefore, it is difficult for moisture to flow into the internal liquid crystal, and the liquid crystal is less deteriorated.
【００２４】対向基板側から光を入射するとき対向基板
の遮光層によってドライバー回路に照射される光が少な
く消費電力の増加を防ぐことができる。When light is incident from the counter substrate side, the light shielding layer of the counter substrate causes less light to be emitted to the driver circuit, so that increase in power consumption can be prevented.
【００２５】セルギャップをより精度良く均一に保つこ
とができる。The cell gap can be maintained more accurately and uniformly.
【００２６】またドライバー回路はシールエリアの下部
に配置されたことで、組立工程での物理的損傷によるド
ライバー回路の破壊が少なく歩留まりが上がる。Further, since the driver circuit is arranged below the seal area, the driver circuit is less destroyed due to physical damage in the assembly process, and the yield is increased.
【図１】 従来の技術による液晶表示装置の構造を示す
断面図。FIG. 1 is a sectional view showing a structure of a conventional liquid crystal display device.
【図２】 従来技術による液晶表示装置の斜視図。FIG. 2 is a perspective view of a conventional liquid crystal display device.
【図３】 本発明による液晶表示装置の構造を示す断面
図。FIG. 3 is a sectional view showing a structure of a liquid crystal display device according to the present invention.
【図４】 本発明による液晶表示装置の斜視図。FIG. 4 is a perspective view of a liquid crystal display device according to the present invention.
１０１、２０１、３０１、４０１・・・素子基板 １０２、２０２、３０２、４０２・・・対向基板 １１３、２０７、３１３、４０７・・・画素駆動トラン
ジスタ １１６、３１６・・・画素駆動トランジスタのゲート電
極、及びゲート配線 １０６、２０５、３０３、４０５・・・シールエリア １０３、１０４、２０３、２０４、３０４、４０３、４
０４・・・ドライバー回路 １１７、３１７・・・配線 １０５・・・画素エリア １１４、３１４・・・画素電極 １１１、３１１・・・対向電極 １１８、３１９・・・導電性樹脂 ３１８・・・透明有機絶縁膜 １０７、３０５・・・コモン電位を持つパッド １１０、３１０・・・ブラックマトリックス １１５、３１５・・・画素電極とのコンタクトホール １１２、３１２・・・配向膜 １１９・・・第１層間絶縁膜 １２０・・・第２層間絶縁膜 １０８、２０６、３０６、４０６・・・外部接続端子101, 201, 301, 401 ... Element substrate 102, 202, 302, 402 ... Counter substrate 113, 207, 313, 407 ... Pixel driving transistor 116, 316 ... Pixel driving transistor gate electrode, And gate wiring 106, 205, 303, 405 ... Seal area 103, 104, 203, 204, 304, 403, 4
04 ... Driver circuit 117, 317 ... Wiring 105 ... Pixel area 114, 314 ... Pixel electrode 111, 311 ... Counter electrode 118, 319 ... Conductive resin 318 ... Transparent organic Insulating films 107, 305 ... Pads having common potential 110, 310 ... Black matrix 115, 315 ... Contact holes with pixel electrodes 112, 312 ... Alignment film 119 ... First interlayer insulating film 120 ... Second interlayer insulating film 108, 206, 306, 406 ... External connection terminal
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０９Ｇ 3/36 7319−5Ｇ Ｈ０１Ｌ 29/784 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location G09G 3/36 7319-5G H01L 29/784
Claims (3)
膜トランジスタが有機膜に覆われており、画素電極が前
記有機膜上に形成されることを特徴とする液晶表示装
置。1. A liquid crystal display device, wherein a pixel driving thin film transistor is covered with an organic film on a substrate of the liquid crystal display device, and a pixel electrode is formed on the organic film.
を特徴とする請求項１に記載の液晶表示装置。2. The liquid crystal display device according to claim 1, wherein the organic film in the seal area is peeled off.
トランジスタ駆動回路をシールエリア下部に配置したこ
とを特徴とする請求項２に記載の液晶表示装置。3. The liquid crystal display device according to claim 2, wherein a pixel transistor drive circuit including an integrated circuit of thin film transistors is arranged below the seal area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33749292A JPH06186580A (en) | 1992-12-17 | 1992-12-17 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33749292A JPH06186580A (en) | 1992-12-17 | 1992-12-17 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06186580A true JPH06186580A (en) | 1994-07-08 |
Family
ID=18309163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33749292A Pending JPH06186580A (en) | 1992-12-17 | 1992-12-17 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06186580A (en) |
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| US5798812A (en) * | 1995-09-28 | 1998-08-25 | Sharp Kabushiki Kaisha | Active matrix substrate and display device using the same with extending protrusions between gate and source line terminals |
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| KR100559761B1 (en) * | 1996-06-25 | 2006-03-13 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Electronic device having liquid crystal display device |
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| JP2010122706A (en) * | 2005-10-14 | 2010-06-03 | Seiko Epson Corp | Display and electronic apparatus |
| US8624885B2 (en) | 2006-07-03 | 2014-01-07 | Japan Display West Inc. | Electro-optical device and electronic apparatus |
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| US6236444B1 (en) | 1993-09-20 | 2001-05-22 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal device with drive circuits on both substrates |
| US7525629B2 (en) | 1993-09-20 | 2009-04-28 | Semiconductor Energy Laboratory Co., Ltd. | Liquid crystal display device comprising drive circuits that include thin film transistors formed on both substrates |
| US5953084A (en) * | 1995-08-11 | 1999-09-14 | Sharp Kabushiki Kaisha | Transmission type liquid crystal display device having capacitance ratio of 10% or less and charging rate difference of 0.6% or less |
| US6052162A (en) * | 1995-08-11 | 2000-04-18 | Sharp Kabushiki Kaisha | Transmission type liquid crystal display device with connecting electrode and pixel electrode connected via contact hole through interlayer insulating film and method for fabricating |
| US6097452A (en) * | 1995-08-11 | 2000-08-01 | Sharp Kabushiki Kaishi | Transmission type liquid crystal display having an organic interlayer elements film between pixel electrodes and switching |
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