JP3996142B2 - ダイナミック自己リフレッシュディスプレイメモリ - Google Patents
ダイナミック自己リフレッシュディスプレイメモリ Download PDFInfo
- Publication number
- JP3996142B2 JP3996142B2 JP2004117893A JP2004117893A JP3996142B2 JP 3996142 B2 JP3996142 B2 JP 3996142B2 JP 2004117893 A JP2004117893 A JP 2004117893A JP 2004117893 A JP2004117893 A JP 2004117893A JP 3996142 B2 JP3996142 B2 JP 3996142B2
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- JP
- Japan
- Prior art keywords
- data
- signal
- dynamic memory
- memory cell
- pixel
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 42
- 230000004044 response Effects 0.000 claims description 9
- 210000004027 cell Anatomy 0.000 description 37
- 230000000295 complement effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000003491 array Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 210000000352 storage cell Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004148 unit process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
-
- 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
- G09G3/34—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
- G09G3/3433—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/346—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on modulation of the reflection angle, e.g. micromirrors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0833—Several active elements per pixel in active matrix panels forming a linear amplifier or follower
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- 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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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Dram (AREA)
Description
本発明を使用し所望の数の画素がアレイ状に配置されたディスプレイを、基板を配設し、その基板上にMEMSデバイスのアレイを、各画素に対し少なくとも1つのMEMSデバイスが対応するように形成することにより、製造することができる。アレイの各MEMSデバイスを、少なくとも1つの作動電極で電気信号によって作動されるように構成する。また、作製には、基板上に各画素に対してダイナミックメモリセルを形成することも含み、各ダイナミックメモリセルは、各々が少なくとも1つのコンデンサを含む第1および第2のダイナミックメモリ素子を含み、第1および第2のメモリ素子をともに単一画素に対応するMEMSデバイスの作動電極に電気的に結合する。形成される各ダイナミックメモリセルはまた、データ信号を増幅しデータ信号およびクロック信号に応答してデータをラッチするように構成されたセンスアンプを含む。MEMSデバイスの形成は、当業者には既知の従来のMEMSプロセスを使用し、ダイナミックメモリ素子の半導体処理に適合するそれらの単位プロセスを選択することによって達成する。かかるMEMSプロセスの例は、基板上でデジタル・マイクロミラー・デバイスのアレイを、各画素に1つまたは複数のデジタル・マイクロミラー・デバイスを対応させて作製することである。ダイナミックメモリ素子を、従来のCMOSプロセス等の従来の半導体作製プロセスによって形成する。この場合もまた、MEMS処理に適合する単位プロセスを選択する。
20 MEMSデバイス
130 Aコンデンサ
135 Bコンデンサ
Claims (4)
- 各画素に対応して少なくとも1つのMEMSデバイスを有するタイプのディスプレイのためのメモリセルであって、データ信号およびクロック信号に応じてデータを記憶するメモリセルであり、
画素ごとに設けられた少なくとも第1および第2のダイナミックメモリ素子と、
前記データ信号を前記ダイナミックメモリ素子にストアするのを許可する、画素ごとに設けられたストア用のトランジスタと、
前記データ信号を前記ダイナミックメモリ素子からロードするのを許可する、画素ごとに設けられたロード用のトランジスタと、
前記データ信号を増幅して前記MEMSデバイスへロードするデータを生成し、前記クロック信号に応答して前記データをラッチするように構成されたセンスアンプと、
を有し、
前記第1および第2のダイナミックメモリ素子は、それぞれ選択用のトランジスタおよび該選択用のトランジスタに接続された蓄積コンデンサを備え、それぞれ前記ストア用およびロード用のトランジスタに接続されており、
前記ストア用のトランジスタがイネーブルされるとき、前記第1および第2のダイナミックメモリ素子の一方を選択する選択信号に従って選択された前記第1および第2のダイナミックメモリ素子の一つに前記データ信号がストアされ、前記ロード用のトランジスタがイネーブルされるとき、前記選択信号に従って選択された前記第1および第2のダイナミックメモリ素子の一つから前記センスアンプへ前記データ信号がロードされるよう構成されており、
前記センスアンプが、前記選択信号に従って選択された前記ダイナミックメモリ素子にストアされたデータ信号をリフレッシュすることにより、前記ダイナミックメモリ素子は自己リフレッシュメモリセルとなる、
メモリセル。 - 前記少なくとも1つのMEMSデバイスはマイクロミラーデバイスである、請求項1に記載のメモリセル。
- 前記センスアンプは、前記データ信号を、前記少なくとも1つのMEMSデバイスを作動するために適当な所定レベルまで増幅する、請求項1に記載のメモリセル。
- 前記所定レベルは、マイクロミラーデバイスを作動するために適当なレベルである、請求項3に記載のメモリセル。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/423,517 US7129925B2 (en) | 2003-04-24 | 2003-04-24 | Dynamic self-refresh display memory |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004327025A JP2004327025A (ja) | 2004-11-18 |
JP3996142B2 true JP3996142B2 (ja) | 2007-10-24 |
Family
ID=32962464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004117893A Expired - Lifetime JP3996142B2 (ja) | 2003-04-24 | 2004-04-13 | ダイナミック自己リフレッシュディスプレイメモリ |
Country Status (7)
Country | Link |
---|---|
US (1) | US7129925B2 (ja) |
EP (2) | EP1471495B1 (ja) |
JP (1) | JP3996142B2 (ja) |
KR (1) | KR100995235B1 (ja) |
CN (1) | CN1540621A (ja) |
SG (1) | SG118227A1 (ja) |
TW (1) | TWI242773B (ja) |
Families Citing this family (29)
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US8159428B2 (en) | 2005-02-23 | 2012-04-17 | Pixtronix, Inc. | Display methods and apparatus |
US7742016B2 (en) | 2005-02-23 | 2010-06-22 | Pixtronix, Incorporated | Display methods and apparatus |
US8519945B2 (en) | 2006-01-06 | 2013-08-27 | Pixtronix, Inc. | Circuits for controlling display apparatus |
US8482496B2 (en) | 2006-01-06 | 2013-07-09 | Pixtronix, Inc. | Circuits for controlling MEMS display apparatus on a transparent substrate |
US7999994B2 (en) | 2005-02-23 | 2011-08-16 | Pixtronix, Inc. | Display apparatus and methods for manufacture thereof |
US9158106B2 (en) | 2005-02-23 | 2015-10-13 | Pixtronix, Inc. | Display methods and apparatus |
US7755582B2 (en) | 2005-02-23 | 2010-07-13 | Pixtronix, Incorporated | Display methods and apparatus |
US9082353B2 (en) | 2010-01-05 | 2015-07-14 | Pixtronix, Inc. | Circuits for controlling display apparatus |
US20070205969A1 (en) | 2005-02-23 | 2007-09-06 | Pixtronix, Incorporated | Direct-view MEMS display devices and methods for generating images thereon |
US8310442B2 (en) | 2005-02-23 | 2012-11-13 | Pixtronix, Inc. | Circuits for controlling display apparatus |
US9261694B2 (en) | 2005-02-23 | 2016-02-16 | Pixtronix, Inc. | Display apparatus and methods for manufacture thereof |
US9229222B2 (en) | 2005-02-23 | 2016-01-05 | Pixtronix, Inc. | Alignment methods in fluid-filled MEMS displays |
CN102004310B (zh) * | 2005-02-23 | 2013-08-28 | 皮克斯特隆尼斯有限公司 | 显示方法和装置 |
WO2007037926A2 (en) * | 2005-09-23 | 2007-04-05 | Sharp Laboratories Of America, Inc. | Mems pixel sensor |
US8526096B2 (en) | 2006-02-23 | 2013-09-03 | Pixtronix, Inc. | Mechanical light modulators with stressed beams |
WO2007145970A2 (en) * | 2006-06-05 | 2007-12-21 | Pixtronix, Inc. | Circuits for controlling display apparatus |
US20080001934A1 (en) * | 2006-06-28 | 2008-01-03 | David Anthony Wyatt | Apparatus and method for self-refresh in a display device |
US9176318B2 (en) | 2007-05-18 | 2015-11-03 | Pixtronix, Inc. | Methods for manufacturing fluid-filled MEMS displays |
US8169679B2 (en) | 2008-10-27 | 2012-05-01 | Pixtronix, Inc. | MEMS anchors |
TWI392231B (zh) * | 2009-08-04 | 2013-04-01 | Raydium Semiconductor Corp | 電路結構 |
KR20120132680A (ko) | 2010-02-02 | 2012-12-07 | 픽스트로닉스 인코포레이티드 | 저온 실 유체 충전된 디스플레이 장치의 제조 방법 |
BR112012019383A2 (pt) | 2010-02-02 | 2017-09-12 | Pixtronix Inc | Circuitos para controlar aparelho de exibição |
US9235047B2 (en) | 2011-06-01 | 2016-01-12 | Pixtronix, Inc. | MEMS display pixel control circuits and methods |
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US9134552B2 (en) | 2013-03-13 | 2015-09-15 | Pixtronix, Inc. | Display apparatus with narrow gap electrostatic actuators |
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WO2016067154A1 (ja) * | 2014-10-29 | 2016-05-06 | 株式会社半導体エネルギー研究所 | 表示素子、表示装置、または電子機器 |
US9703208B2 (en) | 2014-12-08 | 2017-07-11 | Samsung Electronics Co., Ltd. | MQW devices and methods for semiconductor patterning systems |
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2003
- 2003-04-24 US US10/423,517 patent/US7129925B2/en not_active Expired - Lifetime
- 2003-10-23 TW TW092129437A patent/TWI242773B/zh not_active IP Right Cessation
- 2003-10-29 EP EP03024960A patent/EP1471495B1/en not_active Expired - Lifetime
- 2003-10-29 EP EP08019119A patent/EP2037440B1/en not_active Expired - Lifetime
- 2003-11-29 KR KR1020030085906A patent/KR100995235B1/ko active IP Right Grant
- 2003-12-24 CN CNA200310124722XA patent/CN1540621A/zh active Pending
-
2004
- 2004-01-20 SG SG200400597A patent/SG118227A1/en unknown
- 2004-04-13 JP JP2004117893A patent/JP3996142B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1471495B1 (en) | 2012-01-18 |
KR100995235B1 (ko) | 2010-11-17 |
EP2037440A3 (en) | 2009-09-02 |
JP2004327025A (ja) | 2004-11-18 |
EP1471495A3 (en) | 2007-08-08 |
TW200423127A (en) | 2004-11-01 |
US7129925B2 (en) | 2006-10-31 |
US20040212576A1 (en) | 2004-10-28 |
EP2037440A2 (en) | 2009-03-18 |
CN1540621A (zh) | 2004-10-27 |
SG118227A1 (en) | 2006-01-27 |
EP2037440B1 (en) | 2011-10-26 |
KR20040092370A (ko) | 2004-11-03 |
TWI242773B (en) | 2005-11-01 |
EP1471495A2 (en) | 2004-10-27 |
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