WO2006003622A1 - Active matrix array devices having flexible substrates - Google Patents
Active matrix array devices having flexible substrates Download PDFInfo
- Publication number
- WO2006003622A1 WO2006003622A1 PCT/IB2005/052149 IB2005052149W WO2006003622A1 WO 2006003622 A1 WO2006003622 A1 WO 2006003622A1 IB 2005052149 W IB2005052149 W IB 2005052149W WO 2006003622 A1 WO2006003622 A1 WO 2006003622A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- row
- row line
- thin film
- film transistor
- extension
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1218—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition or structure of the substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
Definitions
- AMLCDs electrophoretic displays and organic light emitting diode (OLED) displays on plastic substrates.
- OLED organic light emitting diode
- flexible displays can be realized by processing a display on a flexible substrate layer which is supported by a non-flexible carrier and then either releasing the layer or transferring the layer onto a further flexible substrate.
- the use of flexible substrates enables new product designs to be implemented.
- the device of the invention arranges the gate conductor of a thin film transistor of each pixel to extend in a direction which is not perpendicular to an axis about which the display is deformed. This has been found to reduce the variation in TFT characteristics resulting from deformation of the device. Furthermore, by deforming the device about an axis parallel to the rows, the variation in characteristics of the row conductors is kept to a minimum.
- the row resistance should be kept to a minimum, as signals provided to the rows are typically for operating all of the TFT gates of the row, and RC time constants can be critical.
- Each pixel may further comprise a second thin film transistor, and the gate conductor of the second thin film transistor can be defined by a second extension extending perpendicularly from the row.
- the extension for the first thin film transistor defining the gate conductor of the first TFT can then run parallel to the row line direction.
- a double TFT pixel structure has gate conductors for the two TFTs which are orthogonal, and this enables the performance of the device to be less sensitive to deformation in any direction.
- the device can then be adapted to be deformable at least about two axes, one parallel with the row lines and one parallel with the column lines.
- the device may be deformable about any axis, with no preferential deformation in any particular direction.
- the invention provides a flexible active matrix display device, in which the TFT for each pixel has a gate conductor which extends in a direction which is non-perpendicular to the axis about which the device is to be deformed. This has been found to reduce the effect of the deformation on the operating characteristics of the TFTs.
- Deforming a fabricated display does, however, affect the pixel circuit performance.
- the row conductor 10 thus comprises an elongate row line 10a and an extension 10b which defines the gate conductor 11 of the thin film transistor 14.
- the extension 10b extends in a direction which is non-perpendicular to the direction of the row line 10a.
- the extension 10b extends from the row line at an angle of 20 degrees - 70 degrees to the row line direction, and more preferably 30 - 60 degrees.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05754760A EP1763701A1 (en) | 2004-06-30 | 2005-06-28 | Active matrix array devices having flexible substrates |
JP2007518797A JP2008505352A (en) | 2004-06-30 | 2005-06-28 | Active matrix array device having flexible substrate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0414617.1 | 2004-06-30 | ||
GBGB0414617.1A GB0414617D0 (en) | 2004-06-30 | 2004-06-30 | Active matrix array devices having flexible substrates |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006003622A1 true WO2006003622A1 (en) | 2006-01-12 |
Family
ID=32843289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2005/052149 WO2006003622A1 (en) | 2004-06-30 | 2005-06-28 | Active matrix array devices having flexible substrates |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1763701A1 (en) |
JP (1) | JP2008505352A (en) |
KR (1) | KR20070036081A (en) |
GB (1) | GB0414617D0 (en) |
TW (1) | TW200634414A (en) |
WO (1) | WO2006003622A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007145517A1 (en) * | 2006-06-12 | 2007-12-21 | Polymer Vision Limited | Geometry of functional layers in rollable devices |
US7723804B2 (en) | 2005-08-18 | 2010-05-25 | Seiko Epson Corporation | Semiconductor device, electro-optic device, and electric device |
CN102782858A (en) * | 2009-12-25 | 2012-11-14 | 株式会社理光 | Field-effect transistor, semiconductor memory, display element, image display device, and system |
US10566400B2 (en) | 2016-04-01 | 2020-02-18 | Japan Display Inc. | Flexible semiconductor device and flexible display device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5633346B2 (en) * | 2009-12-25 | 2014-12-03 | 株式会社リコー | Field effect transistor, semiconductor memory, display element, image display apparatus and system |
JP5899615B2 (en) * | 2010-03-18 | 2016-04-06 | 株式会社リコー | Insulating film manufacturing method and semiconductor device manufacturing method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5994174A (en) * | 1997-09-29 | 1999-11-30 | The Regents Of The University Of California | Method of fabrication of display pixels driven by silicon thin film transistors |
US20020139981A1 (en) * | 2001-04-03 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Matrix array devices with flexible substrates |
-
2004
- 2004-06-30 GB GBGB0414617.1A patent/GB0414617D0/en not_active Ceased
-
2005
- 2005-06-27 TW TW094121459A patent/TW200634414A/en unknown
- 2005-06-28 JP JP2007518797A patent/JP2008505352A/en active Pending
- 2005-06-28 KR KR1020067027584A patent/KR20070036081A/en not_active Application Discontinuation
- 2005-06-28 WO PCT/IB2005/052149 patent/WO2006003622A1/en not_active Application Discontinuation
- 2005-06-28 EP EP05754760A patent/EP1763701A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5994174A (en) * | 1997-09-29 | 1999-11-30 | The Regents Of The University Of California | Method of fabrication of display pixels driven by silicon thin film transistors |
US20020139981A1 (en) * | 2001-04-03 | 2002-10-03 | Koninklijke Philips Electronics N.V. | Matrix array devices with flexible substrates |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7723804B2 (en) | 2005-08-18 | 2010-05-25 | Seiko Epson Corporation | Semiconductor device, electro-optic device, and electric device |
WO2007145517A1 (en) * | 2006-06-12 | 2007-12-21 | Polymer Vision Limited | Geometry of functional layers in rollable devices |
CN102782858A (en) * | 2009-12-25 | 2012-11-14 | 株式会社理光 | Field-effect transistor, semiconductor memory, display element, image display device, and system |
US10566400B2 (en) | 2016-04-01 | 2020-02-18 | Japan Display Inc. | Flexible semiconductor device and flexible display device |
US11217646B2 (en) | 2016-04-01 | 2022-01-04 | Japan Display Inc. | Semiconductor device including a flexible substrate |
Also Published As
Publication number | Publication date |
---|---|
EP1763701A1 (en) | 2007-03-21 |
KR20070036081A (en) | 2007-04-02 |
GB0414617D0 (en) | 2004-08-04 |
JP2008505352A (en) | 2008-02-21 |
TW200634414A (en) | 2006-10-01 |
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