JPH07110496A - Production of active matrix panel - Google Patents

Production of active matrix panel

Info

Publication number
JPH07110496A
JPH07110496A JP25670893A JP25670893A JPH07110496A JP H07110496 A JPH07110496 A JP H07110496A JP 25670893 A JP25670893 A JP 25670893A JP 25670893 A JP25670893 A JP 25670893A JP H07110496 A JPH07110496 A JP H07110496A
Authority
JP
Japan
Prior art keywords
film
metal film
chromium
etching gas
gas
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
Application number
JP25670893A
Other languages
Japanese (ja)
Inventor
Masaru Takahata
勝 高畠
Ryoji Oritsuki
良二 折付
Nobutake Konishi
信武 小西
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP25670893A priority Critical patent/JPH07110496A/en
Publication of JPH07110496A publication Critical patent/JPH07110496A/en
Pending legal-status Critical Current

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  • Liquid Crystal (AREA)
  • Thin Film Transistor (AREA)

Abstract

PURPOSE:To shorten the number of stages by simultaneously working a transparent conductive film and metallic film successively deposited on a substrate by one kind of dry etching gas. CONSTITUTION:ITO 2 for pixel electrode first deposited on a substrate 1 in order to simultaneously work pixel electrodes and gate electrodes of thin-film transistors(TRs). In succession, a high melting metallic film 3 in which molybdenum, tantalum or tungsten for gate electrodes is included, is deposited thereon and is simultaneously worked with an etching gas consisting essentially, of hydrogen bromide. A high melting metallic film 11 in which chromium, molybdenum, tantalum or tungsten for source/drain electrodes is included is deposited thereon and thereafter, the high melting metallic film 11 on the source/drain electrodes and the pixel electrodes is simultaneously worked by a gaseous mixture 13 composed of gaseous chlorine and oxygen. The high melting metallic film 11 in which the chromium, molybdenum, tantalum or tungsten is included is etchable by the gaseous mixture 13 composed of gaseous chlorine and oxygen.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はアクティブマトリクス型
の液晶表示パネルに係り、特に、薄膜トランジスタを用
いたアクティブマトリクスパネルにおける工程数短縮を
図った製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an active matrix type liquid crystal display panel, and more particularly to a manufacturing method for reducing the number of steps in an active matrix panel using thin film transistors.

【0002】[0002]

【従来の技術】従来のアクティブマトリクスパネルで
は、例えば、特開平2−19840号に記載のような薄膜トラ
ンジスタを用いている。図13は従来の画素部の断面構
造を示したものであり、図中で、50はガラス基板、5
1はITO、52はクロム(ゲート電極)、53は窒化
シリコン膜(ゲート絶縁膜)、54は非晶質シリコン膜
(半導体膜)、55は窒化シリコン膜(TFT保護
膜)、56はクロム、57は燐を含んだ非晶質シリコン
膜(外因性半導体膜)、58はクロム(ドレイン電極)、5
9はアルミニウム(ドレイン電極)である。
2. Description of the Related Art In a conventional active matrix panel, for example, a thin film transistor as described in JP-A-2-19840 is used. FIG. 13 shows a cross-sectional structure of a conventional pixel portion, in which 50 is a glass substrate and 5 is a glass substrate.
1 is ITO, 52 is chromium (gate electrode), 53 is a silicon nitride film (gate insulating film), 54 is an amorphous silicon film (semiconductor film), 55 is a silicon nitride film (TFT protective film), 56 is chromium, 57 is an amorphous silicon film containing phosphorus (extrinsic semiconductor film), 58 is chromium (drain electrode), 5
9 is aluminum (drain electrode).

【0003】[0003]

【発明が解決しようとする課題】上記従来技術は、マス
ク枚数の低減に関しては考慮されているが、一種類のエ
ッチングガス(あるいはエッチング液)を用いた多層膜
の一括加工に関しては考慮されていないため、大幅な工
程短縮までには至らない。本発明の目的は工程数が短縮
されたアクティブマトリクスパネルの製造方法を提供す
ることにある。
The above-mentioned prior art considers reduction of the number of masks, but does not consider batch processing of a multilayer film using one type of etching gas (or etching solution). Therefore, the process cannot be shortened significantly. An object of the present invention is to provide a method for manufacturing an active matrix panel in which the number of steps is shortened.

【0004】[0004]

【課題を解決するための手段】上記目的は、アクティブ
マトリクス型の液晶パネルで、基板上に順に堆積した透
明導電膜と金属膜を、一種類のドライエッチングガスで
一括加工することにより、画素電極と薄膜トランジスタ
のゲート電極とを同時にパターン形成し、その後、上記
薄膜トランジスタのソース/ドレイン電極をドライエッ
チングガスで加工する時に、同時に、上記画素電極上の
金属膜を除去することにより達成される。ここで、パネ
ルの製造方法で、上記透明導電膜は酸化インジウム・ス
ズ(ITO)、ゲート電極の金属膜はクロム以外の高融点金
属膜(例えば、モリブデン,タンタル、あるいはタング
ステン等)、ソース/ドレイン電極の金属膜はクロム,
モリブデン,タンタル、あるいはタングステンが含まれ
ている高融点金属膜,画素電極と薄膜トランジスタのゲ
ート電極を一括加工するエッチングガスは臭化水素(H
Br)を主成分とするガス、ソース/ドレイン電極と画
素電極上の金属膜を一括加工するエッチングガスは塩素
系ガスと酸素の混合ガスであることが好ましい。
The above-described object is to provide a pixel electrode in an active matrix type liquid crystal panel by collectively processing a transparent conductive film and a metal film sequentially deposited on a substrate with one kind of dry etching gas. And the gate electrode of the thin film transistor are patterned at the same time, and then, when the source / drain electrodes of the thin film transistor are processed by dry etching gas, the metal film on the pixel electrode is simultaneously removed. Here, in the panel manufacturing method, the transparent conductive film is made of indium tin oxide (ITO), the metal film of the gate electrode is made of a refractory metal film other than chromium (for example, molybdenum, tantalum, or tungsten), source / drain. The metal film of the electrode is chromium,
The etching gas for collectively processing the refractory metal film containing molybdenum, tantalum, or tungsten, the pixel electrode and the gate electrode of the thin film transistor is hydrogen bromide (H
It is preferable that the gas containing Br) as a main component and the etching gas for collectively processing the metal films on the source / drain electrodes and the pixel electrodes be a mixed gas of chlorine-based gas and oxygen.

【0005】[0005]

【作用】まず、画素電極と、薄膜トランジスタのゲート
電極とを同時に加工するために、画素電極用のITOを
基板上に堆積し、引き続き、ゲート電極用のモリブデ
ン,タンタルあるいはタングステンが含まれている高融
点金属膜を堆積し、臭化水素(HBr)を主成分とする
エッチングガスで一括加工する。ITOのエッチングガ
スは臭化水素が適しており、また、モリブデン,タンタ
ルあるいはタングステンが含まれている高融点金属膜
も、臭化水素(HBr)を主成分とするエッチングガス
によりエッチング可能である。ここで、従来用いられて
きたクロムは本発明のゲート電極として、以下の点で好
ましくない。すなわち、クロムをドライ加工する際のエ
ッチングガスは酸素と塩素の混合ガスであるが、このガ
スではITOがエッチング時に再酸化されるためITO
のエッチング速度が低下する。次に、ソース/ドレイン
電極用のクロム,モリブデン,タンタルあるいはタング
ステンが含まれている高融点金属膜を堆積後、塩素系ガ
スと酸素の混合ガスでソース/ドレイン電極と画素電極
上の高融点金属膜を一括加工する。ここで、クロム,モ
リブデン、タンタルあるいはタングステンが含まれてい
る高融点金属膜は塩素系ガスと酸素の混合ガスでエッチ
ング可能である。また、ITOは塩素系ガスと酸素の混
合ガスではエッチングされにくいので、画素電極(IT
O)は露出するが、ガスによる形状変化は小さい。
First, in order to simultaneously process the pixel electrode and the gate electrode of the thin film transistor, ITO for the pixel electrode is deposited on the substrate, and subsequently, a high concentration containing molybdenum, tantalum or tungsten for the gate electrode is included. A melting point metal film is deposited, and is collectively processed with an etching gas containing hydrogen bromide (HBr) as a main component. Hydrogen bromide is suitable as an etching gas for ITO, and a refractory metal film containing molybdenum, tantalum, or tungsten can also be etched with an etching gas containing hydrogen bromide (HBr) as a main component. Here, conventionally used chromium is not preferable as the gate electrode of the present invention in the following points. That is, the etching gas for dry-processing chromium is a mixed gas of oxygen and chlorine, but this gas re-oxidizes ITO during etching, so
Etching rate is reduced. Next, after depositing a refractory metal film containing chromium, molybdenum, tantalum, or tungsten for the source / drain electrodes, a refractory metal on the source / drain electrodes and the pixel electrodes is mixed with a mixed gas of chlorine-based gas and oxygen. Process the film at once. Here, the refractory metal film containing chromium, molybdenum, tantalum or tungsten can be etched with a mixed gas of chlorine-based gas and oxygen. Further, since ITO is difficult to be etched by a mixed gas of chlorine-based gas and oxygen, the pixel electrode (IT
O) is exposed, but the change in shape due to gas is small.

【0006】本発明では、単独ガスによる多層膜の一括
加工を用いているので薄膜トランジスタの製造工程数は
短縮される。
According to the present invention, the number of manufacturing steps of the thin film transistor is shortened because the batch processing of the multilayer film using a single gas is used.

【0007】[0007]

【実施例】以下、本発明の実施例を図面を参照して詳細
に説明する。
Embodiments of the present invention will now be described in detail with reference to the drawings.

【0008】図1から図8は、本発明による加工手法を
TFT−LCD基板の製造時の加工に適用した場合の説
明図である。
1 to 8 are explanatory views when the processing method according to the present invention is applied to processing at the time of manufacturing a TFT-LCD substrate.

【0009】図1から図8で、1はガラス基板、2はI
TO(Indium Tin Oxide)、3はモリブデン、4はホトレ
ジスト、5は三塩化硼素(BCl3)と臭化水素(HB
r)の混合ガス、6は窒化シリコン膜(ゲート絶縁
膜)、7は非晶質シリコン膜(半導体膜)、8は燐を含
んだ非晶質シリコン膜(外因性半導体膜)、9はホトレ
ジスト、10はSF6ガス、11はクロム,12はホト
レジスト、13は塩素(Cl2)と酸素(O2 )の混合ガ
ス、14は窒化シリコン膜(TFT保護膜)、20はT
FT付ガラス基板、21は下部の配向膜、22は液晶、
23は上部の配向膜、24はITO付ガラス基板であ
る。
1 to 8, 1 is a glass substrate, 2 is I
TO (Indium Tin Oxide), 3 is molybdenum, 4 is photoresist, 5 is boron trichloride (BCl 3 ) and hydrogen bromide (HB).
r) mixed gas, 6 silicon nitride film (gate insulating film), 7 amorphous silicon film (semiconductor film), 8 amorphous silicon film containing phosphorus (extrinsic semiconductor film), 9 photoresist 10 is SF 6 gas, 11 is chromium, 12 is photoresist, 13 is a mixed gas of chlorine (Cl 2 ) and oxygen (O 2 ), 14 is a silicon nitride film (TFT protective film), and 20 is T.
Glass substrate with FT, 21 is lower alignment film, 22 is liquid crystal,
Reference numeral 23 is an upper alignment film, and 24 is a glass substrate with ITO.

【0010】ここで、図1から図8を参照して、TFT
−LCD基板の製造方法について説明する。
Referring now to FIGS. 1-8, the TFT
-A method for manufacturing an LCD substrate will be described.

【0011】始めに、図1に示すように、ガラス基板1
上に、ITO膜2,モリブデン(Mo)膜3を順次堆積し、
その後、Mo膜3上にホトレジスト材料を塗布し、所定
の個所にホトレジスト膜4をパターニング形成する。
First, as shown in FIG. 1, a glass substrate 1
An ITO film 2 and a molybdenum (Mo) film 3 are sequentially deposited on the above,
After that, a photoresist material is applied on the Mo film 3 and the photoresist film 4 is patterned and formed at a predetermined position.

【0012】次に、図2に示すように、矢印方向からB
Cl3 とHBrとの混合ガスからなるエッチングガス5
を供給し、ホトレジスト膜4をマスクにして、Mo膜
3,ITO膜2を一括してエッチングし、ホトレジスト
膜4が存在する部分を除いた残りの部分のMo膜3,I
TO膜2をエッチング除去する。
Next, as shown in FIG.
Etching gas consisting of mixed gas of Cl 3 and HBr 5
Is supplied and the Mo film 3 and the ITO film 2 are collectively etched using the photoresist film 4 as a mask, and the remaining portions of the Mo film 3 and I excluding the portion where the photoresist film 4 is present.
The TO film 2 is removed by etching.

【0013】次に、図3に示すように、ホトレジスト膜
4を剥離した後、全表面に窒化シリコン膜からなるゲー
ト絶縁膜6,非晶質シリコン膜からなる半導体膜7,燐
を含んだ非晶質シリコン膜8を順次堆積させ、その後
に、燐を含んだ非晶質シリコン膜8上にホトレジスト材
料を塗布し、所定の個所にホトレジスト膜9をパターニ
ング形成する。
Next, as shown in FIG. 3, after the photoresist film 4 is peeled off, the gate insulating film 6 made of a silicon nitride film 6, the semiconductor film 7 made of an amorphous silicon film, and a non-phosphorus-containing non-doped film are formed on the entire surface. A crystalline silicon film 8 is sequentially deposited, and then a photoresist material is applied on the amorphous silicon film 8 containing phosphorus, and a photoresist film 9 is patterned and formed at a predetermined position.

【0014】次に、図4に示すように、矢印方向からS
6 ガスからなるエッチングガス10を供給し、ホトレ
ジスト膜9をマスクにして、燐を含んだ非晶質シリコン
膜8,非晶質シリコン膜7,窒化シリコン膜6を一括し
てエッチングし、ホトレジスト膜9が存在する部分を除
いた残りの部分の燐を含んだ非晶質シリコン膜8,非晶
質シリコン膜7,窒化シリコン膜6をエッチング除去す
る。
Next, as shown in FIG. 4, S from the arrow direction
An etching gas 10 made of F 6 gas is supplied, the amorphous silicon film 8 containing phosphorus, the amorphous silicon film 7, and the silicon nitride film 6 are collectively etched by using the photoresist film 9 as a mask. The remaining portions of the amorphous silicon film 8, the amorphous silicon film 7, and the silicon nitride film 6 excluding the portion where the film 9 is present are removed by etching.

【0015】次に、図5に示すように、ホトレジスト膜
9を剥離した後、全表面にクロム膜11を堆積させ、そ
の後に、クロム膜11上にホトレジスト材料を塗布し、
所定の個所にホトレジスト膜12をパターニング形成す
る。
Next, as shown in FIG. 5, after peeling off the photoresist film 9, a chromium film 11 is deposited on the entire surface, and then a photoresist material is applied on the chromium film 11,
A photoresist film 12 is patterned and formed at a predetermined position.

【0016】次に、図6に示すように、矢印方向からC
2とO2の混合ガスからなるエッチングガス13を供給
し、ホトレジスト膜12が存在する部分を除いた残りの
部分のクロム膜11をエッチング除去し、その時に画素
電極(ITO)上のモリブデン膜3もエッチング除去す
る。この時に画素電極となるITO2は露出する。ここ
で、この条件下ではクロム直下の燐を含んだ非晶質シリ
コン膜8はO2 により酸化されるのでクロムと非晶質シ
リコンの選択エッチングは可能である。また、ソース/
ドレイン用金属は他の高融点金属でも選択エッチングは
可能である。
Next, as shown in FIG. 6, from the direction of the arrow C
An etching gas 13 composed of a mixed gas of l 2 and O 2 is supplied to etch away the remaining chromium film 11 excluding the portion where the photoresist film 12 is present. At that time, the molybdenum film on the pixel electrode (ITO) is removed. 3 is also removed by etching. At this time, the ITO 2 which will be the pixel electrode is exposed. Here, under this condition, the amorphous silicon film 8 containing phosphorus immediately below chromium is oxidized by O 2, so that selective etching of chromium and amorphous silicon is possible. Also, the source /
The drain metal can be selectively etched with other refractory metals.

【0017】次に、図7に示すように、チャネル上の燐
を含んだ非晶質シリコン膜8をドライエッチングにより
除去する。
Next, as shown in FIG. 7, the amorphous silicon film 8 containing phosphorus on the channel is removed by dry etching.

【0018】次に、ホトレジスト膜12を剥離した後、
全表面に窒化シリコン膜からなるTFT保護膜14を堆
積させる。
Next, after peeling off the photoresist film 12,
A TFT protective film 14 made of a silicon nitride film is deposited on the entire surface.

【0019】最後に、図8に示すように、二つの基板、
すなわち、薄膜トランジスタが形成されているTFT付
ガラス基板20と、ITO膜が形成されているITO付
ガラス基板24とが対向配置され、それら基板20,2
4の間に下部配向膜21,上部配向膜23を介して液晶
層22が封入されて、アクティブマトリクス液晶ディス
プレイ基板、すなわち、TFT−LCD(Thin Film Tr
ansistor-LiquidCrystal Display)基板が形成される。
Finally, as shown in FIG. 8, two substrates,
That is, the glass substrate 20 with TFT on which the thin film transistor is formed and the glass substrate 24 with ITO on which the ITO film is formed are arranged so as to face each other.
4, a liquid crystal layer 22 is enclosed via a lower alignment film 21 and an upper alignment film 23, and an active matrix liquid crystal display substrate, that is, a TFT-LCD (Thin Film Trn).
An anstor-Liquid Crystal Display) substrate is formed.

【0020】続く、図9は本発明の製造方法を用いた場
合の画素部の平面構造を示したものである。図中で、3
0は画素電極、31はソース電極、32はドレイン電
極、33はゲート電極が存在する領域、34は窒化シリ
コン膜6/非晶質シリコン膜7が存在する領域である。
Next, FIG. 9 shows a planar structure of the pixel portion when the manufacturing method of the present invention is used. 3 in the figure
Reference numeral 0 is a pixel electrode, 31 is a source electrode, 32 is a drain electrode, 33 is a region where a gate electrode is present, and 34 is a region where the silicon nitride film 6 / amorphous silicon film 7 is present.

【0021】続く、図10から図11は本発明の製造方
法を用いた場合のゲート側端子部の断面構造、ドレイン
側端子部の断面構造を示したものである。図10から図
11で、1はガラス基板、2はITO、3はモリブデ
ン、6は窒化シリコン膜、7は非晶質シリコン膜、8は
燐を含んだ非晶質シリコン膜、11はクロム膜、14は
窒化シリコン膜である。端子部では、外部モジュールと
の接続個所はITOのみで構成されているので信頼性が
向上する。
Next, FIGS. 10 to 11 show the cross-sectional structure of the gate-side terminal portion and the drain-side terminal portion when the manufacturing method of the present invention is used. 10 to 11, 1 is a glass substrate, 2 is ITO, 3 is molybdenum, 6 is a silicon nitride film, 7 is an amorphous silicon film, 8 is an amorphous silicon film containing phosphorus, and 11 is a chromium film. , 14 are silicon nitride films. In the terminal portion, the connection point with the external module is made of only ITO, so that the reliability is improved.

【0022】次に、図12は本発明による加工手法を用
いて製造したTFT−LCD基板を含むアクティブマト
リクス液晶ディスプレイ装置の構成の一例を示すブロッ
ク図である。図12で、40はTFT−LCD基板、4
1は走査側ドライバ、42は信号側ドライバ、43はコ
ントローラ、44は画像信号源である。
Next, FIG. 12 is a block diagram showing an example of the structure of an active matrix liquid crystal display device including a TFT-LCD substrate manufactured by using the processing method according to the present invention. In FIG. 12, 40 is a TFT-LCD substrate, 4
Reference numeral 1 is a scanning side driver, 42 is a signal side driver, 43 is a controller, and 44 is an image signal source.

【0023】そして、TFT−LCD基板40の各画素
(図示なし)に対応した走査線(図示なし)は走査側ド
ライバ41に、同じく各画素(図示なし)に対応した信
号線(図示なし)は信号側ドライバ52にそれぞれ接続
される。コントローラ43は走査側ドライバ41,信号
側ドライバ42,画像信号源44にそれぞれ接続され、
画像信号源44は信号側ドライバ42に接続されてい
る。
A scanning line (not shown) corresponding to each pixel (not shown) of the TFT-LCD substrate 40 is connected to the scanning side driver 41, and a signal line (not shown) corresponding to each pixel (not shown) is also provided. Each is connected to the signal side driver 52. The controller 43 is connected to the scanning driver 41, the signal driver 42, and the image signal source 44,
The image signal source 44 is connected to the signal side driver 42.

【0024】[0024]

【発明の効果】本発明によれば、アクティブマトリクス
型液晶表示装置に用いられる薄膜トランジスタの製法
で、単独ガスによる多層膜の一括加工を用いて薄膜トラ
ンジスタを形成するので、製造工程数は大幅に削減され
る。したがって、薄膜トランジスタを用いることによ
り、製造工程数が短縮されたアクティブマトリクス型液
晶表示装置が提供できる。
According to the present invention, in the method of manufacturing a thin film transistor used in an active matrix type liquid crystal display device, a thin film transistor is formed by batch processing of a multilayer film using a single gas, so that the number of manufacturing steps is greatly reduced. It Therefore, by using the thin film transistor, an active matrix type liquid crystal display device having a reduced number of manufacturing steps can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の加工手法をTFT−LCD基板に適用
した場合の最初の製造段階の説明図。
FIG. 1 is an explanatory diagram of a first manufacturing stage when a processing method of the present invention is applied to a TFT-LCD substrate.

【図2】本発明の加工手法をTFT−LCD基板に適用
した場合の第二の製造段階の説明図。
FIG. 2 is an explanatory diagram of a second manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図3】本発明の加工手法をTFT−LCD基板に適用
した場合の第三の製造段階の説明図。
FIG. 3 is an explanatory diagram of a third manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図4】本発明の加工手法をTFT−LCD基板に適用
した場合の第四の製造段階の説明図。
FIG. 4 is an explanatory view of a fourth manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図5】本発明の加工手法をTFT−LCD基板に適用
した場合の第五の製造段階の説明図。
FIG. 5 is an explanatory view of a fifth manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図6】本発明の加工手法をTFT−LCD基板に適用
した場合の第六の製造段階の説明図。
FIG. 6 is an explanatory view of a sixth manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図7】本発明の加工手法をTFT−LCD基板に適用
した場合の第七の製造段階の説明図。
FIG. 7 is an explanatory diagram of a seventh manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図8】本発明の加工手法をTFT−LCD基板に適用
した場合の最終の製造段階の説明図。
FIG. 8 is an explanatory diagram of a final manufacturing stage when the processing method of the present invention is applied to a TFT-LCD substrate.

【図9】本発明を用いた場合の画素部の平面構造図。FIG. 9 is a plan structure diagram of a pixel portion when the present invention is used.

【図10】本発明を用いた場合のゲート側端子部の断面
図。
FIG. 10 is a cross-sectional view of a gate-side terminal portion when the present invention is used.

【図11】本発明を用いた場合のドレイン側端子部の断
面図。
FIG. 11 is a cross-sectional view of a drain-side terminal portion when the present invention is used.

【図12】本発明を用いたアクティブマトリクス液晶デ
ィスプレイのシステムのブロック図。
FIG. 12 is a block diagram of a system of an active matrix liquid crystal display using the present invention.

【図13】従来の画素部の断面図。FIG. 13 is a sectional view of a conventional pixel portion.

【符号の説明】[Explanation of symbols]

1…ガラス基板、2…ITO、3…モリブデン、6…窒
化シリコン膜(ゲート絶縁膜)、7…非晶質シリコン膜
(半導体膜)、8…燐を含んだ非晶質シリコン膜(外因
性半導体膜)、11…クロム,12…ホトレジスト、1
3…塩素と酸素の混合ガス。
1 ... Glass substrate, 2 ... ITO, 3 ... Molybdenum, 6 ... Silicon nitride film (gate insulating film), 7 ... Amorphous silicon film (semiconductor film), 8 ... Amorphous silicon film containing phosphorus (extrinsic Semiconductor film), 11 ... Chrome, 12 ... Photoresist, 1
3 ... A mixed gas of chlorine and oxygen.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】アクティブマトリクス型の液晶パネルにお
いて、基板上に順に堆積した透明導電膜と金属膜を、一
種類のドライエッチングガスで一括加工することによ
り、画素電極と薄膜トランジスタのゲート電極とを同時
にパターン形成し、その後、上記薄膜トランジスタのソ
ース/ドレイン電極をドライエッチングガスで加工する
時に、同時に、上記画素電極上の金属膜を除去すること
を特徴とするアクティブマトリクスパネルの製造方法。
1. In an active matrix type liquid crystal panel, a transparent conductive film and a metal film, which are sequentially deposited on a substrate, are collectively processed with one kind of dry etching gas to simultaneously form a pixel electrode and a gate electrode of a thin film transistor. A method for manufacturing an active matrix panel, which comprises patterning and thereafter removing the metal film on the pixel electrode at the same time as processing the source / drain electrodes of the thin film transistor with a dry etching gas.
【請求項2】請求項1において、上記透明導電膜は酸化
インジウム・スズ、上記ゲート電極の金属膜はクロム以
外の高融点金属膜、上記ソース/ドレイン電極の金属膜
はクロム,モリブデン,タンタル、あるいはタングステ
ン等の高融点金属膜,画素電極と薄膜トランジスタのゲ
ート電極を一括加工するエッチングガスは臭化水素を主
成分とするガス,ソース/ドレイン電極と画素電極上の
金属膜を一括加工するエッチングガスは塩素系ガスと酸
素の混合ガスであるアクティブマトリクスパネルの製造
方法。
2. The transparent conductive film according to claim 1, wherein the metal film of the gate electrode is a refractory metal film other than chromium, and the metal film of the source / drain electrodes is chromium, molybdenum, or tantalum. Alternatively, a high melting point metal film such as tungsten, an etching gas for collectively processing the pixel electrode and the gate electrode of the thin film transistor is a gas mainly containing hydrogen bromide, and an etching gas for collectively processing the source / drain electrodes and the metal film on the pixel electrode. Is a method of manufacturing an active matrix panel, which is a mixed gas of chlorine-based gas and oxygen.
JP25670893A 1993-10-14 1993-10-14 Production of active matrix panel Pending JPH07110496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25670893A JPH07110496A (en) 1993-10-14 1993-10-14 Production of active matrix panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25670893A JPH07110496A (en) 1993-10-14 1993-10-14 Production of active matrix panel

Publications (1)

Publication Number Publication Date
JPH07110496A true JPH07110496A (en) 1995-04-25

Family

ID=17296369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25670893A Pending JPH07110496A (en) 1993-10-14 1993-10-14 Production of active matrix panel

Country Status (1)

Country Link
JP (1) JPH07110496A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6528357B2 (en) * 1998-03-13 2003-03-04 Kabushiki Kaisha Toshiba Method of manufacturing array substrate
KR100421613B1 (en) * 2001-05-07 2004-03-09 엘지.필립스 엘시디 주식회사 Tft lcd and manufacturing method thereof
KR100811643B1 (en) * 2002-03-06 2008-03-11 엘지.필립스 엘시디 주식회사 1-step etching method for insulated layer having multi-layer structure
JP2010117499A (en) * 2008-11-12 2010-05-27 Toshiba Mobile Display Co Ltd Array substrate and method for manufacturing array substrate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6528357B2 (en) * 1998-03-13 2003-03-04 Kabushiki Kaisha Toshiba Method of manufacturing array substrate
KR100421613B1 (en) * 2001-05-07 2004-03-09 엘지.필립스 엘시디 주식회사 Tft lcd and manufacturing method thereof
KR100811643B1 (en) * 2002-03-06 2008-03-11 엘지.필립스 엘시디 주식회사 1-step etching method for insulated layer having multi-layer structure
JP2010117499A (en) * 2008-11-12 2010-05-27 Toshiba Mobile Display Co Ltd Array substrate and method for manufacturing array substrate

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