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Patent 2694086 Summary

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Claims and Abstract availability

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(12) Patent Application: (11) CA 2694086
(54) English Title: STABLE FAST PROGRAMING SCHEME FOR DISPLAYS
(54) French Title: STRATAGEME DE PROGRAMMATION STABLE ET RAPIDE POUR DISPOSITIFS D'AFFICHAGE
Status: Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication
Bibliographic Data
(51) International Patent Classification (IPC):
  • G09G 3/3225 (2016.01)
(72) Inventors :
  • NATHAN, AROKIA (Canada)
  • CHAJI, REZA (Canada)
(73) Owners :
  • IGNIS INNOVATION INC.
(71) Applicants :
  • IGNIS INNOVATION INC. (Canada)
(74) Agent: MARKS & CLERK
(74) Associate agent:
(45) Issued:
(22) Filed Date: 2010-02-17
(41) Open to Public Inspection: 2011-08-17
Availability of licence: N/A
Dedicated to the Public: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data: None

Abstracts

English Abstract


Disclosed is a technique to improve the display uniformity.


Claims

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Sorry, the claims for patent document number 2694086 were not found.
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Description

Note: Descriptions are shown in the official language in which they were submitted.


CA 02694086 2010-02-17
SUMMARY OF INVENTION
The disclosed techniques provide a faster calibration of reference current
sources and also reduce the
noise effect by improving the dynamic range.
ADVANTAGES
It can help improve the display uniformity and lifetime despite instability
and non-uniformity of
individual devices.

CA 02694086 2010-02-17
This technique can be applied to any type of displays including active matrix
organic light emitting diode
(AMOLED) displays. It can also be adapted for any thin film transistor
backplane technology including,
but not limited to, amorphous silicon, poly-Si, nano/micro-Si, metal oxide,
and organic semiconductors,
nanowire/nanotube and nanocomposite channel layers, and crystalline
semiconductors. .
In previously introduced voltage-programming current-biasing technique, two
levels of calibration take
in place. The first level is the calibration of current sources with a
reference current. The second level is
calibration of the display with the current sources. Figure 1 shows an
embodiment of a technique to
improve the calibration speed. Here, two rows of calibration current sources
are used. While one row of
current sources is being used to calibrate the panel, the other row of current
sources is being calibrated
with a reference current. As a result, the entire frame can be used to
calibrate the current sources with
external current. This enables the use of voltage-programming current-biasing
technique in higher
resolutions, high frame rate displays including 120-Hz or higher and full HD
(1920x1080) or other
resolution displays, as well as 3D displays, including flat-panel holographic
displays. One can use more
than two rows for calibration current sources.
The trend in improving OLED efficiency results in reduction of required
current. Thus, backplane
technologies with high mobility will have limited input dynamic range and so
noise and cross talk will
cause significant error in the pixel data. To improve this, a damping
technique is developed that can
damp the input signal and the programming noise with the same rate. Figure 2
shows a pixel
embodiment adapting this technique. Here, the storage capacitor is divided
into two smaller capacitors.
Since C52 is beneath the Vdd line, it will help to improve the aperture ratio
as well. Here, the final voltage
at node A will be as following //
VA= VB+ (VP-Vref Vn)(CSL (CS1+C52)
where VB is the calibration voltage created by Ibias, Vp the programming
voltage, Võ the programming
noise and cross talk.
Figure 3 shows another embodiment that adapted the damping capacitor.

Representative Drawing

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Administrative Status

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Event History

Description Date
Inactive: IPC deactivated 2016-03-12
Inactive: First IPC from PCS 2016-01-09
Inactive: IPC from PCS 2016-01-09
Inactive: IPC expired 2016-01-01
Application Not Reinstated by Deadline 2012-09-27
Inactive: Dead - No reply to s.37 Rules requisition 2012-09-27
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice 2012-02-17
Deemed Abandoned - Failure to Respond to Notice Requiring a Translation 2011-09-27
Inactive: Abandoned - No reply to s.37 Rules requisition 2011-09-27
Application Published (Open to Public Inspection) 2011-08-17
Inactive: Cover page published 2011-08-16
Inactive: Incomplete 2011-06-27
Inactive: Request under s.37 Rules - Non-PCT 2011-06-27
Appointment of Agent Requirements Determined Compliant 2010-07-26
Inactive: Office letter 2010-07-26
Inactive: Office letter 2010-07-26
Revocation of Agent Requirements Determined Compliant 2010-07-26
Appointment of Agent Request 2010-07-16
Revocation of Agent Request 2010-07-16
Reinstatement Requirements Deemed Compliant for All Abandonment Reasons 2010-03-30
Inactive: First IPC assigned 2010-03-25
Inactive: IPC assigned 2010-03-25
Filing Requirements Determined Compliant 2010-03-22
Inactive: Filing certificate - No RFE (English) 2010-03-22
Application Received - Regular National 2010-03-22
Small Entity Declaration Determined Compliant 2010-02-17

Abandonment History

Abandonment Date Reason Reinstatement Date
2012-02-17
2011-09-27

Fee History

Fee Type Anniversary Year Due Date Paid Date
Application fee - small 2010-02-17
Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
IGNIS INNOVATION INC.
Past Owners on Record
AROKIA NATHAN
REZA CHAJI
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
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Document
Description 		 Date
(yyyy-mm-dd) 		 Number of pages   Size of Image (KB) 
Claims 2011-08-17 1 3
Description 2010-02-17 2 48
Abstract 2010-02-17 1 5
Drawings 2010-02-17 3 20
Cover Page 2011-07-25 1 19
Filing Certificate (English) 2010-03-22 1 157
Reminder of maintenance fee due 2011-10-18 1 112
Courtesy - Abandonment Letter (R37) 2011-10-25 1 165
Courtesy - Abandonment Letter (incomplete) 2011-11-22 1 166
Courtesy - Abandonment Letter (Maintenance Fee) 2012-04-13 1 174
Correspondence 2010-03-22 2 51
Correspondence 2010-07-16 3 98
Correspondence 2010-07-26 1 15
Correspondence 2010-07-26 1 17
Correspondence 2011-06-27 1 27
Correspondence 2011-06-27 1 21