JP2018156077A - 半導体装置、表示装置、および電子機器 - Google Patents
半導体装置、表示装置、および電子機器 Download PDFInfo
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- JP2018156077A JP2018156077A JP2018045545A JP2018045545A JP2018156077A JP 2018156077 A JP2018156077 A JP 2018156077A JP 2018045545 A JP2018045545 A JP 2018045545A JP 2018045545 A JP2018045545 A JP 2018045545A JP 2018156077 A JP2018156077 A JP 2018156077A
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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Abstract
Description
本実施の形態では、画素アレイと、ゲートドライバと、ソースドライバと、を有する表示装置について説明する。
図1は、表示装置の構成例を示す上面図である。
図2は、表示装置100の構成例を示すブロック図である。
次に、表示装置100について、図2とは異なる構成例を、図3に示す表示装置110を用いて説明する。表示装置110は、表示装置100と同じ画素数を有するが、ソース線およびゲート線の数が異なる。
図4(A)に示すブロック図は、ソースドライバ105a乃至105fおよびソースドライバ106a乃至106fに適用可能な、ソースドライバの構成例である。
コントローラ26とバッファアンプ25に関するフローチャートを、図6に示す。
本実施の形態では、上記実施の形態に記載の画素アレイ101に適用可能な画素10について、図7および図8を用いて説明を行う。
図7(A)に、表示素子として発光素子を用いた画素10の構成例を示す。図7(A)に示す画素10は、トランジスタTr41、Tr42、容量素子C41、発光素子LEを有する。なお、ここではトランジスタTr41、Tr42をnチャネル型としているが、トランジスタの極性は適宜変更することができる。
画素10が有するトランジスタに用いられる半導体としては、シリコン、ゲルマニウムなどの第14族の元素、ガリウムヒ素などの化合物半導体、有機半導体、金属酸化物などを用いることができる。また、半導体は、非単結晶半導体(非晶質半導体、微結晶半導体、多結晶半導体など)であってもよいし、単結晶半導体であってもよい。
画素アレイ101および画素10の具体的な構成例について、図8(A)および(B)に示す断面図を用いて説明する。なお、図8(A)および(B)に示す断面図は、表示素子として発光素子、特に有機EL素子を用いた例である。
本実施の形態では、本発明の一態様の電子機器について、図面を参照して説明する。
C41 容量素子
C42 容量素子
IN 入力端子
N41 ノード
N42 ノード
N43 ノード
OUT 出力端子
R1 矢印
SW 入力端子
Tr11 トランジスタ
Tr31 トランジスタ
Tr32 トランジスタ
Tr33 トランジスタ
Tr34 トランジスタ
Tr35 トランジスタ
Tr36 トランジスタ
Tr37 トランジスタ
Tr38 トランジスタ
Tr41 トランジスタ
Tr42 トランジスタ
Tr43 トランジスタ
VBIAS1 制御信号
VBIAS4 制御信号
VPCAS 制御信号
VNCAS 制御信号
10 画素
21 半導体装置
22 インターフェース
23 データレジスタ
24 D/Aコンバータ
25 バッファアンプ
26 コントローラ
27 出力端子
30 回路
100 表示装置
101 画素アレイ
102 ゲートドライバ
103 ゲートドライバ
104a 端子
104d 端子
105 ソースドライバ
105a ソースドライバ
105f ソースドライバ
106 ソースドライバ
106a ソースドライバ
106f ソースドライバ
110 表示装置
301 基板
302 絶縁層
303 絶縁層
305 絶縁層
306 絶縁層
311 シール材
312 基板
331 電極
332 半導体層
333 電極
334 電極
335 電極
336 電極
341 電極層
342 発光層
343 電極層
344 隔壁
345 充填材
7000 表示部
7100 テレビジョン装置
7101 筐体
7103 スタンド
7111 リモコン操作機
7200 ノート型パーソナルコンピュータ
7211 筐体
7212 キーボード
7213 ポインティングデバイス
7214 外部接続ポート
7300 デジタルサイネージ
7301 筐体
7303 スピーカ
7311 情報端末機
Claims (6)
- データレジスタと、
コントローラと、
D/Aコンバータと、
バッファアンプと、を有し、
前記データレジスタは、第一のデータと、第二のデータと、を格納する機能を有し、
前記データレジスタは、前記D/Aコンバータに、前記第一及び第二のデータを交互に出力し、
前記D/Aコンバータは、前記データレジスタから入力された、前記第一又は第二のデータを、アナログ信号に変換する機能を有し、
前記バッファアンプは、前記アナログ信号を増幅して、事前に定められた負荷を、事前に定められた時間内に、充放電する機能を有し、
前記コントローラは、前記第一のデータと、前記第二のデータの、変化量を計算し、
前記コントローラは、前記変化量が、事前に定められた量より小さい場合、前記バッファアンプが有する、一部のトランジスタを無効とする、半導体装置。 - 画素アレイと、
ソースドライバと、を有し、
前記画素アレイは、ソース線と、画素と、を有し、
前記ソースドライバは、データレジスタと、コントローラと、D/Aコンバータと、バッファアンプと、を有し、
前記データレジスタは、第一の画像データと、第二の画像データと、を格納する機能を有し、
前記データレジスタは、前記D/Aコンバータに、前記第一及び第二の画像データを交互に出力し、
前記D/Aコンバータは、前記データレジスタから入力された、前記第一又は第二の画像データを、アナログ信号に変換する機能を有し、
前記バッファアンプは、前記アナログ信号を増幅して、前記ソース線に、事前に定められた時間内に、供給する機能を有し、
前記コントローラは、前記第一の画像データと、前記第二の画像データの、変化量を計算し、
前記コントローラは、前記変化量が、事前に定められた量より小さい場合、前記バッファアンプが有する、一部のトランジスタを無効とする、表示装置。 - 請求項2において、
前記画素アレイは、ゲート線を有し、
前記画素は、前記ソース線に平行な方向と、前記ゲート線に平行な方向と、にマトリクス状に配設され、
前記ソース線に平行な方向に配設された、前記画素の数は、前記ゲート線の数のN倍(Nは2以上の整数)であり、
前記ゲート線に平行な方向に配設された、前記画素の数は、前記ソース線の数の1/N倍であることを特徴とする、表示装置。 - 請求項2または請求項3において、
前記画素は、チャネル形成領域に金属酸化物を含むトランジスタを有する、表示装置。 - データレジスタと、
コントローラと、
D/Aコンバータと、
バッファアンプと、を有し、
前記データレジスタは、第一のデータと、第二のデータと、を格納する機能を有し、
前記データレジスタは、前記D/Aコンバータに、前記第一及び第二のデータを交互に出力し、
前記D/Aコンバータは、前記データレジスタから入力された、前記第一又は第二のデータを、アナログ信号に変換する機能を有し、
前記バッファアンプは、前記アナログ信号を増幅して、事前に定められた負荷を、事前に定められた時間内に、充放電する機能を有し、
前記バッファアンプは、第一乃至第六のトランジスタを有し、
前記第一のトランジスタのソースまたはドレインの一方は、第一の電源線に電気的に接続され、
前記第一のトランジスタのソースまたはドレインの他方は、前記第二のトランジスタのソースまたはドレインの一方と電気的に接続され、
前記第二のトランジスタのソースまたはドレインの他方は、前記第一の電源線に電気的に接続され、
前記第三のトランジスタのソースまたはドレインの一方は、前記第一のトランジスタのゲートと電気的に接続され、
前記第三のトランジスタのソースまたはドレインの他方は、前記第二のトランジスタのゲートと電気的に接続され、
前記第四のトランジスタのソースまたはドレインの一方は、第二の電源線に電気的に接続され、
前記第四のトランジスタのソースまたはドレインの他方は、前記第一のトランジスタのソースまたはドレインの他方と電気的に接続され、
前記第五のトランジスタのソースまたはドレインの一方は、前記第二の電源線に電気的に接続され、
前記第五のトランジスタのソースまたはドレインの他方は、前記第二のトランジスタのソースまたはドレインの一方と電気的に接続され、
前記第六のトランジスタのソースまたはドレインの一方は、前記第四のトランジスタのゲートと電気的に接続され、
前記第六のトランジスタのソースまたはドレインの他方は、前記第五のトランジスタのゲートと電気的に接続され、
前記コントローラは、前記第一のデータと、前記第二のデータの、変化量を計算し、
前記コントローラは、前記変化量が、事前に定められた量より小さい場合、
前記第二のトランジスタ、前記第三のトランジスタ、前記第五のトランジスタ、及び、前記第六のトランジスタをオフすることで、前記バッファアンプの充放電する機能の一部を無効とする、半導体装置。 - 請求項5において、
前記バッファアンプは、第七のトランジスタ、及び、第八のトランジスタを有し、
前記第七のトランジスタのソースまたはドレインの一方は、前記第一の電源線に電気的に接続され、
前記第七のトランジスタのソースまたはドレインの他方は、前記第二のトランジスタのゲートと電気的に接続され、
前記第八のトランジスタのソースまたはドレインの一方は、前記第二の電源線に電気的に接続され、
前記第八のトランジスタのソースまたはドレインの他方は、前記第五のトランジスタのゲートと電気的に接続される、半導体装置。
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US20200013332A1 (en) | 2020-01-09 |
WO2018167605A1 (en) | 2018-09-20 |
KR20190126873A (ko) | 2019-11-12 |
US10878750B2 (en) | 2020-12-29 |
JP7046659B2 (ja) | 2022-04-04 |
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