JP4628447B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3283—Details of drivers for data electrodes in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements
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- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
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- 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
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- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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- G09G2310/0264—Details of driving circuits
- G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
- G09G3/3241—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
- G09G3/3241—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
- G09G3/325—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror the data current flowing through the driving transistor during a setting phase, e.g. by using a switch for connecting the driving transistor to the data driver
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Description
服部励治、他3名、「信学技報」、ED2001−8、電流指定型ポリシリコンTFTアクティブマトリクス駆動有機LEDディスプレイの回路シミュレーション、p.7−14
本発明の電流源から供給される信号電流の値を設定する手段及び電流源回路、出力線と電流源との電気的な接続をある期間ごとに切り換え手段(以下、単に切り換え回路という)を、図1、2を用いて説明する。なお図1、2は、m列目から(m+2)列目の出力線Lm、L(m+1)、L(m+2)の周辺の電流源回路を示す。また図1、2は、切り換え回路を、模式的に複数の端子と、その端子を選択するスイッチ(sw)130で示している。
本実施の形態では、図1及び図2で説明した電流源の回路構成について説明する。図3は、一つの電流源を示し、(a)は設定信号と接続され、(b)はリファレンス用定電流源(定電流源)110と接続され、(c)は切り換え回路と接続される。そして電流源の等価回路図の具体例を、図3(A)から(E)に示す。
本実施の形態では、電流源回路を有する信号線駆動回路の構成について、具体例を説明する。
次に本実施の形態では、実施の形態2と異なり、設定信号がラッチパルスに相当する信号線駆動回路の構成について、具体例を説明する。
次に、実施の形態2、3と異なり、シフトレジスタが複数設けられた信号線駆動回路の構成について、具体例を説明する。
次に、実施の形態2から4と異なり、第1のラッチ回路802及び第2のラッチ回路803が各々電流源を有する信号線駆動回路の構成について、具体例を説明する。
次に、実施の形態2から5と異なり、ラッチ回路に一対の電流源を有する信号線駆動回路の構成について、具体例を説明する。
次に、実施の形態2から6と異なる信号線駆動回路の構成について、具体例を説明する。
本発明の切り換え回路は、図11に示すように、電流源が隣り合う3つの出力線(例えば信号線であり、以下信号線で説明する)との接続に限定されているものではなく、信号線の数が2以上であり、電流源と信号線との電気的な接続がある期間ごとに切り換わるように設計されていればよい。そこで本実施の形態では、図11とは異なる切り換え回路の接続構成について、図12を用いて説明する。
本実施の形態は、図11、図12と異なり、図1(B)に示すように複数の電流源をまとめた電流源回路群と、複数のアナログスイッチをまとめてアナログスイッチ群として備えた切り換え回路と、設定電流が供給される出力線(例えば信号線であり、以下信号線で説明する)とを有する構成について、図13を用いて説明する。
本実施の形態では、電流源回路が設定動作を行う動作方法と、電流源と出力線(例えば信号線であり、以下信号線で説明する)との電気的な接続を切り換える動作方法とを有する回路の駆動方法について説明する。
次に本実施の形態では、サブフレーム方式における、電流源回路が設定動作を行う動作方法と、電流源と出力線(例えば信号線であり、以下信号線で説明する)との電気的な接続を切り換える動作方法とを有する回路の駆動方法について、図15を用いて説明する。
本実施の形態では、実施の形態7のように信号線駆動回路を二つ設けた場合の、電流源回路が設定動作を行う動作方法と、電流源と出力線(例えば信号線であり、以下信号線で説明する)との電気的な接続を切り換える動作方法とを有する回路の駆動方法について説明する。
本実施の形態では、画素部に設けられる画素の回路の構成例について図16を用いて説明する。
Claims (7)
- 第1のx個(xは2以上の整数)の電流源と、第2のx個の電流源と、切り換え回路と、配線とを有し、
前記第1のx個の電流源及び前記第2のx個の電流源は、一方で設定動作が行われているとき、他方で出力動作が行われており、
前記切り換え回路は、前記第1のx個の電流源及び前記第2のx個の電流源のうち前記出力動作を行っているx個の電流源と、前記配線との導通を所定の期間毎に切り換える機能を有することを特徴とする半導体装置。 - 第1のx個(xは2以上の整数)の電流源と、第2のx個の電流源と、切り換え回路と、配線とを有し、
前記第1のx個の電流源及び前記第2のx個の電流源それぞれは、設定信号に基づいて信号電流を設定する設定動作と、前記配線に設定電流を出力する出力動作とが行われ、
前記第1のx個の電流源及び前記第2のx個の電流源は、一方で前記設定動作が行われているとき、他方で前記出力動作が行われており、
前記切り換え回路は、前記第1のx個の電流源及び前記第2のx個の電流源のうち前記出力動作を行っているx個の電流源と、前記配線との導通を所定の期間毎に切り換える機能を有することを特徴とする半導体装置。 - 第1のx個(xは2以上の整数)の電流源と、第2のx個の電流源と、切り換え回路と、配線とを有し、
前記第1のx個の電流源及び前記第2のx個の電流源は、一方で設定動作が行われているとき、他方で出力動作が行われており、
前記切り換え回路は、前記第1のx個の電流源及び前記第2のx個の電流源のうち前記出力動作を行っているx個の電流源と、前記配線との導通を所定の期間毎に切り換える機能を有し、
前記第1のx個の電流源及び前記第2のx個の電流源それぞれは、第1のスイッチと、第2のスイッチと、第1のトランジスタと、第2のトランジスタとを有し、
前記第1のトランジスタ及び前記第2のトランジスタは、同一の導電型であり、
前記第1のスイッチ及び前記第2のスイッチは、それぞれ一対の端子を有し、
前記第1のスイッチは、一方の端子が定電流源に接続され、他方の端子が前記第2のスイッチの一方の端子、前記第1のトランジスタのソースまたはドレインの一方、及び前記第2のトランジスタのソースまたはドレインの一方に接続され、
前記第2のスイッチは、他方の端子が前記第1のトランジスタのゲート及び前記第2のトランジスタのゲートに接続され、
前記第1のトランジスタは、ソースまたはドレインの他方が電源に接続され、
前記第2のトランジスタは、ソースまたはドレインの他方が前記切り換え回路に接続され、
前記第1のスイッチ及び前記第2のスイッチは、設定信号により導通状態と非導通状態が制御されることを特徴とする半導体装置。 - 第1のx個(xは2以上の整数)の電流源と、第2のx個の電流源と、切り換え回路と、配線とを有し、
前記第1のx個の電流源及び前記第2のx個の電流源それぞれは、設定信号に基づいて信号電流を設定する設定動作と、前記配線に設定電流を出力する出力動作とが行われ、
前記第1のx個の電流源及び前記第2のx個の電流源は、一方で前記設定動作が行われているとき、他方で前記出力動作が行われており、
前記切り換え回路は、前記第1のx個の電流源及び前記第2のx個の電流源のうち前記出力動作を行っているx個の電流源と、前記配線との導通を所定の期間毎に切り換える機能を有し、
前記第1のx個の電流源及び前記第2のx個の電流源それぞれは、第1のスイッチと、第2のスイッチと、第1のトランジスタと、第2のトランジスタとを有し、
前記第1のトランジスタ及び前記第2のトランジスタは、同一の導電型であり、
前記第1のスイッチ及び前記第2のスイッチは、それぞれ一対の端子を有し、
前記第1のスイッチは、一方の端子が定電流源に接続され、他方の端子が前記第2のスイッチの一方の端子、前記第1のトランジスタのソースまたはドレインの一方、及び前記第2のトランジスタのソースまたはドレインの一方に接続され、
前記第2のスイッチは、他方の端子が前記第1のトランジスタのゲート及び前記第2のトランジスタのゲートに接続され、
前記第1のトランジスタは、ソースまたはドレインの他方が電源に接続され、
前記第2のトランジスタは、ソースまたはドレインの他方が前記切り換え回路に接続され、
前記第1のスイッチ及び前記第2のスイッチは、前記設定信号により導通状態と非導通状態が制御されることを特徴とする半導体装置。 - 請求項3または4において、
前記第1のトランジスタ及び前記第2のトランジスタは、nチャネル型であることを特徴とする半導体装置。 - 請求項3または4において、
前記第1のトランジスタ及び前記第2のトランジスタは、pチャネル型であることを特徴とする半導体装置。 - 請求項1乃至6のいずれか一において、
前記設定動作と前記出力動作は、所定のタイミングで交互に切り替わることを特徴とする半導体装置。
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Also Published As
Publication number | Publication date |
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CN100437701C (zh) | 2008-11-26 |
KR101102372B1 (ko) | 2012-01-05 |
US20140232622A1 (en) | 2014-08-21 |
JP2008242489A (ja) | 2008-10-09 |
WO2004066248A1 (ja) | 2004-08-05 |
US9626913B2 (en) | 2017-04-18 |
KR101065659B1 (ko) | 2011-09-20 |
US20040232952A1 (en) | 2004-11-25 |
JPWO2004066248A1 (ja) | 2006-05-18 |
CN1739133A (zh) | 2006-02-22 |
JP4170293B2 (ja) | 2008-10-22 |
AU2003289447A1 (en) | 2004-08-13 |
US8659529B2 (en) | 2014-02-25 |
EP1585098A4 (en) | 2007-03-21 |
KR20110003589A (ko) | 2011-01-12 |
KR20050101175A (ko) | 2005-10-20 |
EP1585098A1 (en) | 2005-10-12 |
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