JP6863725B2 - 表示装置 - Google Patents
表示装置 Download PDFInfo
- Publication number
- JP6863725B2 JP6863725B2 JP2016236993A JP2016236993A JP6863725B2 JP 6863725 B2 JP6863725 B2 JP 6863725B2 JP 2016236993 A JP2016236993 A JP 2016236993A JP 2016236993 A JP2016236993 A JP 2016236993A JP 6863725 B2 JP6863725 B2 JP 6863725B2
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- JP
- Japan
- Prior art keywords
- layer
- insulating layer
- oxide
- display device
- transistor
- 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.)
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- 239000004065 semiconductor Substances 0.000 claims description 262
- 239000004973 liquid crystal related substance Substances 0.000 claims description 200
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- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
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Description
本実施の形態では、本発明の一態様の表示装置、及び当該表示装置の作製方法について、図1乃至図30を用いて説明する。
図1(A)及び図2に、表示装置の一例を示す。図1(A)は、表示装置100の断面図であり、図2は、表示装置100の斜視図である。図2では、明瞭化のため、偏光板130などの構成要素を省略して図示している。図2では、基板61を破線で示す。
本発明の一態様の表示装置が有する基板の材質などに大きな制限はなく、様々な基板を用いることができる。例えば、ガラス基板、石英基板、サファイア基板、半導体基板、セラミック基板、金属基板、またはプラスチック基板等を用いることができる。
本発明の一態様の表示装置が有するトランジスタは、トップゲート型またはボトムゲート型のいずれの構造としてもよい。または、チャネルの上下にゲート電極が設けられていてもよい。トランジスタに用いる半導体材料は特に限定されず、例えば、酸化物半導体、シリコン、ゲルマニウム等が挙げられる。トランジスタの半導体層には、可視光を透過する材料を用いることが好ましい。これにより、表示装置の開口率を高めることができる。
酸化物半導体層は、少なくともインジウム(In)、亜鉛(Zn)及びM(Al、Ti、Ga、Ge、Y、Zr、La、Ce、Nd、SnまたはHf等の金属)を含むIn−M−Zn酸化物で表記される膜を含むことが好ましい。また、該酸化物半導体を用いたトランジスタの電気特性のばらつきを減らすため、それらと共に、スタビライザーを含むことが好ましい。
表示装置が有する各絶縁層、オーバーコート、スペーサ等に用いることのできる絶縁材料としては、有機絶縁材料または無機絶縁材料を用いることができる。有機絶縁材料としては、例えば、アクリル樹脂、エポキシ樹脂、ポリイミド樹脂、ポリアミド樹脂、ポリアミドイミド樹脂、シロキサン樹脂、ベンゾシクロブテン系樹脂、及びフェノール樹脂等が挙げられる。無機絶縁層としては、酸化シリコン膜、酸化窒化シリコン膜、窒化酸化シリコン膜、窒化シリコン膜、酸化アルミニウム膜、酸化ハフニウム膜、酸化イットリウム膜、酸化ジルコニウム膜、酸化ガリウム膜、酸化タンタル膜、酸化マグネシウム膜、酸化ランタン膜、酸化セリウム膜、及び酸化ネオジム膜等が挙げられる。
トランジスタのゲート、ソース、ドレインのほか、表示装置が有する各種配線及び電極等の導電層には、アルミニウム、チタン、クロム、ニッケル、銅、イットリウム、ジルコニウム、モリブデン、銀、タンタル、またはタングステンなどの金属、またはこれを主成分とする合金を単層構造または積層構造として用いることができる。例えば、アルミニウム膜上にチタン膜を積層する二層構造、タングステン膜上にチタン膜を積層する二層構造、モリブデン膜上に銅膜を積層した二層構造、モリブデンとタングステンを含む合金膜上に銅膜を積層した二層構造、銅−マグネシウム−アルミニウム合金膜上に銅膜を積層する二層構造、チタン膜または窒化チタン膜と、そのチタン膜または窒化チタン膜上に重ねてアルミニウム膜または銅膜を積層し、さらにその上にチタン膜または窒化チタン膜を形成する三層構造、モリブデン膜または窒化モリブデン膜と、そのモリブデン膜または窒化モリブデン膜上に重ねてアルミニウム膜または銅膜を積層し、さらにその上にモリブデン膜または窒化モリブデン膜を形成する三層構造等がある。例えば、ソース電極225a及びドレイン電極225bを三層構造とする場合、一層目及び三層目には、チタン、窒化チタン、モリブデン、タングステン、モリブデンとタングステンを含む合金、モリブデンとジルコニウムを含む合金、または窒化モリブデンでなる膜を形成し、二層目には、銅、アルミニウム、金または銀、或いは銅とマンガンの合金等の低抵抗材料でなる膜を形成することが好ましい。なお、ITO、酸化タングステンを含むインジウム酸化物、酸化タングステンを含むインジウム亜鉛酸化物、酸化チタンを含むインジウム酸化物、酸化チタンを含むインジウム錫酸化物、インジウム亜鉛酸化物、ITSO等の透光性を有する導電性材料を用いてもよい。
接着層141としては、熱硬化樹脂、光硬化樹脂、または2液混合型の硬化性樹脂などの硬化性樹脂を用いることができる。例えば、アクリル樹脂、ウレタン樹脂、エポキシ樹脂、またはシロキサン樹脂などを用いることができる。
接続体242としては、例えば、異方性導電フィルム(ACF:Anisotropic Conductive Film)、または異方性導電ペースト(ACP:Anisotropic Conductive Paste)などを用いることができる。
着色層131は特定の波長帯域の光を透過する有色層である。着色層131に用いることのできる材料としては、金属材料、樹脂材料、及び顔料または染料が含まれた樹脂材料などが挙げられる。
遮光層132は、例えば、隣接する異なる色の着色層131の間に設けられる。例えば、金属材料、または、顔料もしくは染料を含む樹脂材料を用いて形成されたブラックマトリクスを、遮光層132として用いることができる。なお、遮光層132は、駆動回路部64など、表示部62以外の領域にも設けると、導波光などによる光漏れを抑制できるため好ましい。
図5〜図8に、表示装置の一例をそれぞれ示す。図5は、表示装置100Aの断面図であり、図6は、本発明の一態様の表示装置が有する副画素の上面図であり、図7は、表示装置100Bの断面図であり、図8は、表示装置100Cの断面図である。なお、表示装置100A、表示装置100B、及び表示装置100Cの斜視図は、図2に示す表示装置100と同様であるため、ここでの説明は省略する。
図8に示す表示装置100Cの作製方法の一例について、図9〜図13を用いて説明する。なお、トランジスタの作製方法の詳細は、実施の形態2を参照することができる。
図8に示す表示装置100Cの作製方法の一例について、図14及び図15を用いて説明する。
図8に示す表示装置100Cの作製方法の一例について、図16及び図17を用いて説明する。
図18(A)、図19(A)、及び図20に、表示装置の一例をそれぞれ示す。図18(A)は、表示装置100Dの断面図であり、図19(A)は、表示装置100Eの断面図であり、図20は、表示装置100Fの断面図である。なお、表示装置100D、表示装置100E、及び表示装置100Fの斜視図は、図2に示す表示装置100と同様であるため、ここでの説明は省略する。
本発明の一態様は、タッチセンサが搭載された表示装置(入出力装置またはタッチパネルともいう)に適用することができる。上述の各表示装置の構成を、タッチパネルに適用することができる。本実施の形態では、表示装置100Cにタッチセンサを搭載する例を主に説明する。
図24及び図25に、タッチパネルの一例を示す。図24(A)は、タッチパネル350Bの斜視図である。図24(B)は、図24(A)を展開した斜視概略図である。なお、明瞭化のため、代表的な構成要素のみを示している。図24(B)では、基板61を破線で輪郭のみ明示している。図25は、タッチパネル350Bの断面図である。
図26に、タッチパネルの一例を示す。図26は、タッチパネル350Cの断面図である。
図30(A)、(B)に、液晶素子の電極の上面形状の例を示す。
本実施の形態では、半導体装置について説明する。具体的には、本発明の一態様の表示装置に用いることのできるトランジスタ、及び当該トランジスタの作製方法について、図31乃至図40を用いて説明する。
図31(A)(B)(C)に、トランジスタの一例を示す。図31(A)(B)(C)に示すトランジスタは、スタガ型(トップゲート構造)である。
次に、図31(A)(B)(C)に示すトランジスタと異なる構成について、図32(A)(B)(C)を用いて説明する。
次に、図32(A)(B)(C)に示すトランジスタと異なる構成について、図33及び図34を用いて説明する。
次に、図31に示すトランジスタ300の作製方法の一例について、図35乃至図37を用いて説明する。なお、図35乃至図37は、トランジスタ300の作製方法を説明するチャネル長(L)方向及びチャネル幅(W)方向の断面図である。
次に、図32に示すトランジスタ300Aの作製方法の一例について、図38乃至図40を用いて説明する。なお、図38乃至図40は、トランジスタ300Aの作製方法を説明するチャネル長(L)方向及びチャネル幅(W)方向の断面図である。
本実施の形態では、本発明の一態様の表示装置を有するタッチパネルモジュール及び電子機器について、図41〜図43を用いて説明する。
40 液晶素子
45 光
46 外光
51 基板
56 導電層
56a 導電層
56b 導電層
57 補助配線
58 導電層
60 画素
60a 副画素
60b 副画素
60c 副画素
61 基板
62 表示部
64 駆動回路部
65 配線
66 遮光領域
67 領域
68 開口部
69 接続部
72 FPC
72a FPC
72b FPC
73 IC
73a IC
73b IC
81 走査線
82 信号線
100 表示装置
100A 表示装置
100B 表示装置
100C 表示装置
100D 表示装置
100E 表示装置
100F 表示装置
111 画素電極
112 共通電極
113 液晶層
113a 配向膜
113b 配向膜
114 画素電極
115 導電層
117 スペーサ
118 導電層
119 補助配線
121 オーバーコート
123 絶縁層
124 電極
125 絶縁層
126 導電層
127 電極
128 電極
130 偏光板
131 着色層
132 遮光層
133 液晶層
133a 配向膜
133b 配向膜
138 配線
139 配線
141 接着層
142 接着層
160 保護基板
161 バックライト
162 基板
163 接着層
164 接着層
165 偏光板
166 偏光板
167 接着層
168 接着層
169 接着層
201 トランジスタ
204 接続部
206 トランジスタ
207 接続部
211 絶縁層
212 絶縁層
213 ゲート絶縁層
213_0 絶縁層
214 絶縁層
215 絶縁層
216 絶縁層
220 絶縁層
221 ゲート
221_0 導電層
222 導電層
222a 導電層
222b 導電層
223 ゲート
225a ソース電極
225b ドレイン電極
227 導電層
228 走査線
229 信号線
231 半導体層
231a チャネル領域
231b 低抵抗領域
242 接続体
242b 接続体
243 接続体
244 導電層
245 導電層
251 導電層
252 接続部
253 導電層
255 導電層
300 トランジスタ
300A トランジスタ
300B トランジスタ
300C トランジスタ
301 作製基板
302 基板
303 分離層
304 絶縁層
305 酸化物絶縁層
306 導電層
307 酸化物半導体層
308 酸化物半導体層
308d ドレイン領域
308f 領域
308i チャネル領域
308s ソース領域
309 分離層
310 絶縁層
310_0 絶縁層
312 導電層
312_0 導電層
316 絶縁層
318 絶縁層
320a 導電層
320b 導電層
340 マスク
341a 開口部
341b 開口部
343 開口部
350A タッチパネル
350B タッチパネル
350C タッチパネル
370 表示装置
375 入力装置
376 入力装置
379 表示装置
621 電極
622 電極
3501 配線
3502 配線
3510 配線
3510_1 配線
3510_2 配線
3510_6 配線
3511 配線
3511_1 配線
3511_6 配線
3515_1 ブロック
3515_2 ブロック
3516 ブロック
5000 筐体
5001 表示部
5002 表示部
5003 スピーカ
5004 LEDランプ
5005 操作キー
5006 接続端子
5007 センサ
5008 マイクロフォン
5009 スイッチ
5010 赤外線ポート
5011 記録媒体読込部
5012 スタンド
5013 リモコン操作機
5014 アンテナ
5015 シャッターボタン
5016 受像部
5017 充電器
5018 バンド
5019 留め金
5020 アイコン
5021 アイコン
8000 タッチパネルモジュール
8001 上部カバー
8002 下部カバー
8003 FPC
8004 タッチパネル
8007 バックライト
8008 光源
8009 フレーム
8010 プリント基板
8011 バッテリ
Claims (1)
- トランジスタと、前記トランジスタと電気的に接続される液晶素子と、を有する表示装置であって、
前記トランジスタが有する半導体層は、チャネル領域と低抵抗領域とを有し、
前記液晶素子は、画素電極と、液晶層とを有し、
前記低抵抗領域は、絶縁層に設けられた開口部を介して、前記画素電極と接しており、
前記低抵抗領域は、前記絶縁層の前記開口部の側面に接するとともに、前記開口部の底部において前記画素電極と接し、
前記表示装置の断面視において、前記画素電極は、前記液晶層と前記絶縁層との間に位置する表示装置。
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TWI604609B (zh) * | 2012-02-02 | 2017-11-01 | 半導體能源研究所股份有限公司 | 半導體裝置 |
JP5906132B2 (ja) * | 2012-05-09 | 2016-04-20 | 株式会社ジャパンディスプレイ | 表示装置 |
WO2013191033A1 (ja) * | 2012-06-19 | 2013-12-27 | シャープ株式会社 | 半導体装置およびその製造方法 |
TWI742574B (zh) * | 2013-05-16 | 2021-10-11 | 日商半導體能源研究所股份有限公司 | 半導體裝置 |
JP6417125B2 (ja) * | 2014-06-25 | 2018-10-31 | 株式会社ジャパンディスプレイ | 半導体装置 |
KR102169034B1 (ko) * | 2014-07-25 | 2020-10-23 | 엘지디스플레이 주식회사 | 표시장치 및 그 제조방법 |
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2016
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- 2016-12-01 WO PCT/IB2016/057235 patent/WO2017098376A1/en active Application Filing
- 2016-12-01 KR KR1020187017983A patent/KR20180093000A/ko not_active Application Discontinuation
- 2016-12-06 JP JP2016236993A patent/JP6863725B2/ja active Active
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WO2017098376A1 (en) | 2017-06-15 |
US20170168333A1 (en) | 2017-06-15 |
KR20180093000A (ko) | 2018-08-20 |
JP2017111438A (ja) | 2017-06-22 |
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