JP7240151B2 - 検出装置及び表示装置 - Google Patents
検出装置及び表示装置 Download PDFInfo
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- JP7240151B2 JP7240151B2 JP2018219519A JP2018219519A JP7240151B2 JP 7240151 B2 JP7240151 B2 JP 7240151B2 JP 2018219519 A JP2018219519 A JP 2018219519A JP 2018219519 A JP2018219519 A JP 2018219519A JP 7240151 B2 JP7240151 B2 JP 7240151B2
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- insulating layer
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Description
図1は、第1実施形態に係る検出装置を示す平面図である。図2は、第1実施形態に係る検出装置の構成例を示すブロック図である。図1に示すように、検出装置1は、絶縁基板21と、センサ部10と、ゲート線駆動回路15と、信号線選択回路16と、アナログフロントエンド回路(以下、AFE(Analog Front End)と表す)48と、制御回路102と、電源回路103と、を有する。
図8は、第2実施形態に係る検出装置の概略断面構成を示す断面図である。なお、以下の説明において、上述した実施形態で説明した構成要素については、同じ符号を付して、説明を省略する。
図9は、第3実施形態に係る検出装置の概略断面構成を示す断面図である。図9に示すように、本実施形態の検出装置1Bにおいて、第1無機絶縁層25に加え第2無機絶縁層25Aが設けられている。第1無機絶縁層25は、絶縁基板21の法線方向において、第1有機絶縁層23aとフォトダイオードPDとの間に設けられる。第2無機絶縁層25Aは、第1有機絶縁層23aと第1スイッチング素子Trとの間に設けられる。具体的には、第2無機絶縁層25Aは、第1スイッチング素子Trのソース電極62(信号線SGL)及びドレイン電極63(第3導電層67)を覆う。絶縁基板21の法線方向において、第1有機絶縁層23aは、第1無機絶縁層25と、第2無機絶縁層25Aとの間に挟まれて配置される。
図10は、第4実施形態に係る検出装置の部分検出領域を模式的に示す平面図である。図11は、図10のXI-XI’線に沿う断面図である。図10に示すように、第1ゲート線GCLA(第1ゲート電極64A)と第2ゲート線GCLB(第2ゲート電極64B)とは、複数の第2ゲート線GCLBと複数の信号線SGLとで囲まれた領域で、電気的に接続される。なお、複数の第2ゲート線GCLBと複数の信号線SGLとで囲まれた領域とは、隣り合う信号線SGLの間の第2ゲート線GCLBと重なる領域も含む。
図12は、第5実施形態に係る表示装置の概略断面構成を示す断面図である。図12に示すように、表示装置120は、検出装置1と、表示パネル121と、タッチパネル122と、カバーガラス123とを有する。表示パネル121は、例えば、表示素子として発光素子を用いた有機ELディスプレイパネル(OLED: Organic Light Emitting Diode)や無機ELディスプレイ(マイクロLED、ミニLED(Mini-LED))であってもよい。或いは、表示パネル20は、表示素子として液晶素子を用いた液晶表示パネル(LCD:Liquid Crystal Display)や、表示素子として電気泳動素子を用いた電気泳動型表示パネル(EPD:Electrophoretic Display)であってもよい。また、検出装置1に用いる光電変換素子としてアモルファスシリコン材料を用いていたが、代わりに有機材料等を用いてもよい。
2 バックプレーン
10 センサ部
15 ゲート線駆動回路
16 信号線選択回路
17 リセット回路
21 絶縁基板
25 第1無機絶縁層
25A 第2無機絶縁層
31 第3半導体
34 上部電極
35 下部電極
36 接続配線
48 AFE
61 第1半導体
62 ソース電極
63 ドレイン電極
64A 第1ゲート電極
64B 第2ゲート電極
81 第2半導体
82 ソース電極
83 ドレイン電極
84 ゲート電極
120 表示装置
AA 検出領域
GA 周辺領域
GCL ゲート線
PAA 部分検出領域
PD フォトダイオード
SGL 信号線
Tr 第1スイッチング素子
TrG 第2スイッチング素子
TrS 第3スイッチング素子
TrR 第4スイッチング素子
Claims (9)
- 絶縁基板と、
前記絶縁基板の検出領域に配列され、それぞれに照射された光に応じた信号を出力する複数の光電変換素子と、
複数の前記光電変換素子のそれぞれに対応して設けられ、第1半導体、ソース電極及びドレイン電極を含む第1スイッチング素子と、
前記第1スイッチング素子に接続され第1方向に延在する複数のゲート線と、
前記第1スイッチング素子に接続され前記第1方向と交差する複数の信号線と、
前記絶縁基板の法線方向において、前記光電変換素子と前記第1スイッチング素子との間に設けられた無機絶縁層と、を有し、
前記第1スイッチング素子は、前記絶縁基板の法線方向において、前記第1半導体を挟んで設けられた第1ゲート電極と第2ゲート電極とを含み、
複数のゲート線と複数の信号線とで囲まれた領域で、前記第1ゲート電極と前記第2ゲート電極とは電気的に接続される
検出装置。 - 前記第1スイッチング素子を覆う平坦化膜を有し、
前記絶縁基板の法線方向において、前記無機絶縁層は前記平坦化膜と前記光電変換素子との間に設けられる
請求項1に記載の検出装置。 - 前記第1スイッチング素子を覆う平坦化膜を有し、
前記絶縁基板の法線方向において、前記無機絶縁層は前記平坦化膜と前記第1スイッチング素子との間に設けられる
請求項1に記載の検出装置。 - 前記ソース電極及び前記ドレイン電極は、前記第1半導体の上側に層間絶縁層を介して設けられ、それぞれ、前記層間絶縁層に設けられたコンタクトホールを介して前記第1半導体と電気的に接続され、
前記無機絶縁層は前記ソース電極及び前記ドレイン電極を覆う
請求項3に記載の検出装置。 - 第2半導体を有する第2スイッチング素子を含み、前記検出領域の外側の周辺領域に設けられて複数の前記ゲート線を駆動するゲート線駆動回路を有し、
前記無機絶縁層は、前記第2スイッチング素子と重なる領域に亘って設けられる
請求項1から請求項4のいずれか1項に記載の検出装置。 - 前記第1半導体は、酸化物半導体であり、
前記第2半導体は、ポリシリコンである
請求項5に記載の検出装置。 - 前記無機絶縁層は、第1無機絶縁層と、第2無機絶縁層とを含み、
前記第1スイッチング素子を覆う平坦化膜を有し、
前記絶縁基板の法線方向において、前記第1無機絶縁層は前記平坦化膜と前記光電変換素子との間に設けられ、前記第2無機絶縁層は前記平坦化膜と前記第1スイッチング素子との間に設けられる
請求項1に記載の検出装置。 - 前記ソース電極及び前記ドレイン電極は、前記第1半導体の上側に層間絶縁層を介して設けられ、それぞれ、前記層間絶縁層に設けられたコンタクトホールを介して前記第1半導体と電気的に接続され、
前記第2無機絶縁層は、前記ソース電極及び前記ドレイン電極を覆う、
請求項7に記載の検出装置。 - 請求項1から請求項8のいずれか1項に記載の検出装置と、
画像を表示するための表示素子を有し、前記検出装置と対向して配置される表示パネルと、を有する、
表示装置。
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