JP2011186108A - 電気光学装置及びその製造方法、並びに電子機器 - Google Patents
電気光学装置及びその製造方法、並びに電子機器 Download PDFInfo
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Abstract
【解決手段】電気光学装置は、基板(10)上に、データ線(6a)に接続されたソース領域(1d)、画素電極(9a)に接続されたドレイン領域(1e)、及びチャネル領域(1a´)を有する半導体層(1a)と、ゲート電極(31)を有するトランジスター(30)と、ゲート電極の上層側にゲート電極より広く形成され、上側絶縁膜(41)に開孔された第1コンタクトホール(820)を介してゲート電極に接続された上側遮光膜(710)と、半導体層の下層側に形成され、第2コンタクトホール(810)を介して上側遮光層と接続された下側遮光膜(11)とを備える。
【選択図】図5
Description
に所定電圧レベルのプリチャージ信号を画像信号に先行して各々供給するプリチャージ回路、製造途中や出荷時の当該液晶装置の品質、欠陥等を検査するための検査回路等を形成してもよい。
次に、図7及び図8を参照しながら、上述した本実施形態の液晶装置の製造方法を説明する。図7及び図8は、製造方法の各工程における図5及び図6に示す断面の構成を、順を追って示す工程断面図である。
次に、図9を参照しながら、上述した液晶装置を電子機器の一例であるプロジェクタに適用した場合を説明する。上述した液晶装置は、プロジェクタのライトバルブとして用いられている。図9は、プロジェクタの構成例を示す平面図である。
Claims (11)
- 基板上に、
互いに交差するデータ線及び走査線と、
前記データ線及び前記走査線の交差に対応する画素毎に設けられた画素電極と、
(i)前記データ線と電気的に接続された第1ソース・ドレイン領域、前記画素電極と電気的に接続された第2ソース・ドレイン領域、並びに前記第1ソース・ドレイン領域及び前記第2ソース・ドレイン領域間に設けられたチャネル領域を有する半導体層と、(ii)前記チャネル領域にゲート絶縁膜を介して対向するように配置されたゲート電極を有するトランジスターと、
前記ゲート電極より上側絶縁膜を介して上層側に前記ゲート電極と重なる部分を有して形成されると共に、前記上側絶縁膜に開孔された第1コンタクトホールを介して前記ゲート電極に電気的に接続された上側遮光膜と、
前記半導体層より下側絶縁膜を介して下層側に形成されており、前記上側絶縁膜、前記ゲート絶縁膜及び前記下側絶縁膜を貫通するように開孔された第2コンタクトホールを介して前記上側遮光層と電気的に接続された下側遮光膜と
を備えることを特徴とする電気光学装置。 - 前記ゲート電極及び前記上側遮光膜は、同じ材料を含んでいることを特徴とする請求項1に記載の電気光学装置。
- 前記半導体層は、
前記第2ソース・ドレイン領域及び前記チャネル領域間に形成された接合領域を有し、
前記上側遮光膜は、前記第1接合領域を囲むように形成されていることを特徴とする請求項1又は2に記載の電気光学装置。 - 前記第2コンタクトホールは、前記基板上で平面的に見て、前記上側遮光膜が前記チャネル領域に重なる部分の脇から、前記半導体層に沿って形成されていることを特徴とする請求項1から3のいずれか一項に記載の電気光学装置。
- 前記上側遮光膜は、2以上のOD値を有することを特徴とする請求項1から4のいずれか一項に記載の電気光学装置。
- 前記第1コンタクトホールは、前記第2コンタクトホールと一体的に形成されていることを特徴とする請求項1から5のいずれか一項に記載の電気光学装置。
- 基板上に、互いに交差するデータ線及び走査線と、前記データ線及び前記走査線の交差に対応する画素毎に設けられた画素電極と、(i)前記データ線と電気的に接続された第1ソース・ドレイン領域、前記画素電極と電気的に接続された第2ソース・ドレイン領域、並びに前記第1ソース・ドレイン領域及び前記第2ソース・ドレイン領域間に設けられたチャネル領域を有する半導体層と、(ii)前記チャネル領域にゲート絶縁膜を介して対向するように配置されたゲート電極を有するトランジスターとを備える電気光学装置の製造方法であって、
前記基板上に、下側遮光膜を形成する第1工程と、
前記下側遮光膜上に下側絶縁膜を形成する第2工程と、
前記下側絶縁膜上に、前記半導体層、前記ゲート絶縁膜及びゲート電極を形成する第3工程と、
前記ゲート電極をマスクとして前記半導体層に不純物を注入し、アニール処理を行うことにより、前記注入された不純物を活性化させる第4工程と、
前記第4工程の後に、前記ゲート電極上に上側絶縁膜を形成し、該上側絶縁膜に第1コンタクトホールを形成する第5工程と、
前記下側絶縁膜、前記ゲート絶縁膜及び前記上側絶縁膜を貫通するように第2コンタクトホールを形成する第6工程と、
前記基板上で平面的に見て、前記第1コンタクトホール及び第2コンタクトホールを介して、前記上側遮光膜と前記ゲート電極が電気的に接続されるように上側遮光膜を形成する第6工程と
を備えることを特徴とする電気光学装置の製造方法。 - 前記第6工程において、前記上側遮光膜は前記ゲート電極と同じ材料を含んで形成されることを特徴とする請求項7に記載の電気光学装置の製造方法。
- 前記第1コンタクトホール及び前記第2コンタクトホールは、同時に形成されることを特徴とする請求項7又は8に記載の電気光学装置の製造方法。
- 前記第1コンタクトホール及び前記第2コンタクトホールは、一体的に形成されることを特徴とする請求項7から9のいずれか一項に記載の電気光学装置の製造方法。
- 請求項1から6のいずれか一項に記載の電気光学装置を具備することを特徴とする電子機器。
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Cited By (6)
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US8698157B2 (en) | 2011-10-03 | 2014-04-15 | Seiko Epson Corporation | Electro-optical apparatus and electronic apparatus |
US9082854B2 (en) | 2013-01-18 | 2015-07-14 | Seiko Epson Corporation | Electrooptic device substrate for shielding light from switching element, electrooptic device, and electronic apparatus |
US9147741B2 (en) | 2012-11-06 | 2015-09-29 | Samsung Display Co., Ltd. | Thin film transistor display panel and method of manufacturing the same |
JP2016134388A (ja) * | 2015-01-15 | 2016-07-25 | 株式会社ジャパンディスプレイ | 表示装置 |
JPWO2017086116A1 (ja) * | 2015-11-18 | 2018-09-13 | ソニー株式会社 | 半導体装置および投射型表示装置 |
JP7491144B2 (ja) | 2020-08-27 | 2024-05-28 | セイコーエプソン株式会社 | 電気光学装置、および電子機器 |
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US8130333B2 (en) | 2012-03-06 |
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