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US Patent 7365742 - Light emitting display and driving method thereof

US Patent Issued on April 29, 2008
Estimated Patent Expiration Date: Icon_subject October 11, 2024Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

A light emitting display including data lines for applying data voltages corresponding to video signals, scan lines for transmitting select signals, and pixel circuits. Each pixel circuit includes a light emitting element for emitting light, and a transistor including first to third electrodes, for controlling a current output to the third electrode according to a voltage between the first and second electrodes. Each pixel circuit also includes a first switch for diode-connecting the transistor, a capacitor having a first electrode coupled to the first electrode of the transistor, a second switch for applying a corresponding said data voltage to the second electrode of the capacitor in response to a corresponding said select signal from a corresponding said scan line, and a third switch for substantially electrically decoupling the second electrode of the capacitor from a power supply voltage source.

Other References

  • Patent Abstracts of Japan, Publication No. 2004-286816, dated Oct. 14, 2004, in the name of Yoshiaki Aoki.
  • Patent Abstracts of Japan, Publication No. 2004-133240, dated Apr. 30, 2004, in the name of Shin Asano et al.
  • Patent Abstracts of Japan, Publication No. 2003-223138, dated Aug. 8, 2003, in the name of Hajime Kimura.
  • Patent Abstracts of Japan, Publication No. 2003-195809, dated Jul. 9, 2003, in the name of Tomoyuki Maeda.
  • Patent Abstracts of Japan, Publication No. 2003-122301, dated Apr. 25, 2003, in the name of Hajime Akimoto et al.
  • Choi, S., et al., An Improved Voltage Programmed Pixel Structure for Large Sizes and High Resolution AM-OLED Displays, SID 04 Digest, 2004, pp. 260-263, XP-001222795.
  • European Search Report of EP 04 090 384.1, dated Dec. 14, 2005, corresponding to U.S. Appl. No. 10/919,693.
  • European Search Report of EP 04 090 383.3, dated Nov. 30, 2005, corresponding in U.S. Appl. No. 10/963,389.
  • Patent Abstract of Japan, Publication No. 2003173165, Published Jun. 20, 2003, in the name of Aoki Yoshiaaki.
  • Korean Patent Abstract, Publication No. 100370286, Published Jul. 7, 2002, in the name of O Gyeong Kwon.

Inventors

Assignee

Application

No. 10963389 filed on 10/11/2004

US Classes:

345/204, DISPLAY DRIVING CONTROL CIRCUITRY345/82, Solid body light emitter (e.g., LED)315/169.3, Electroluminescent device345/76, Electroluminescent345/55Display elements arranged in matrix (e.g., rows and columns)

Field of Search

315/169.1, Diverse-type energizing or bias supplies to different electrodes315/169.2, Including shifting of register, counter, or display315/169.3, Electroluminescent device345/76, Electroluminescent345/82, Solid body light emitter (e.g., LED)345/204, DISPLAY DRIVING CONTROL CIRCUITRY345/211, Display power source345/212, Regulating means345/213, Synchronizing means345/214Controlling the condition of display elements

Examiners

Primary: Tran, Thang V.
Assistant: Vu, Jimmy T.

Attorney, Agent or Firm

US Patent References

5952789, Active matrix organic light emitting diode (amoled) display pixel structure and data load/illuminate circuit therefor
Issued on: 09/14/1999
Inventor: Stewart, et al.
6229506, Active matrix light emitting diode pixel structure and concomitant method
Issued on: 05/08/2001
Inventor: Dawson, et al.
6373454, Active matrix electroluminescent display devices
Issued on: 04/16/2002
Inventor: Knapp, et al.
6384804, Display comprising organic smart pixels
Issued on: 05/07/2002
Inventor: Dodabalapur, et al.
6577302, Display device having current-addressed pixels
Issued on: 06/10/2003
Inventor: Hunter, et al.
6858992, Organic electro-luminescence device and method and apparatus for driving the same
Issued on: 02/22/2005
Inventor: Park, et al.
7061451Light emitting device and electronic device
Issued on: 06/13/2006
Inventor: Kimura

Foreign Patent References

  • 10220 191 EP 07/01/2002
  • 10220 191 EP 09/01/2003
  • 2003-122301 JP 04/01/2003
  • 2003-173165 JP 06/01/2003
  • 2003-195809 JP 07/01/2003
  • 2003-223138 JP 08/01/2003
  • 2004-133240 JP 04/01/2004
  • 2004-286816 JP 10/01/2004
  • 10-0370286 KR 07/01/2002

International Class

G09G 5/00

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