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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10347692 B1

PDFFull Text
Date of Patent:
Jul. 09, 2019

Filed:

Oct. 24, 2017

Organic light emitting display device

Applicant:

Lg Display Co., Ltd., Seoul, KR;

Inventors:

Taeyoung Lee, Goyang-si, KR;

Changwoo Lee, Seoul, KR;

Osung Do, Paju-si, KR;

Assignee:

LG DISPLAY CO., LTD., Seoul, KR;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Vinh T Lam

Int. Cl.
CPC ...
H01L 27/32 (2006.01); G06K 9/00 (2006.01); G09F 9/30 (2006.01); H01L 51/50 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H05B 33/02 (2006.01); H05B 33/22 (2006.01); H05B 33/28 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 27/32 (2013.01); G06K 9/0004 (2013.01); G06K 9/00013 (2013.01); G09F 9/30 (2013.01); H01L 27/3244 (2013.01); H01L 51/0031 (2013.01); H01L 51/50 (2013.01); H01L 51/5203 (2013.01); H01L 51/56 (2013.01); H05B 33/02 (2013.01); H05B 33/22 (2013.01); H05B 33/28 (2013.01);
Abstract

An organic light emitting display device in an embodiment of the present invention comprises a display panel equipped with a plurality of pixels each including an OLED and a driving TFT for driving the OLED and a sensing circuit connected to pixels through a sensing line and detecting driving characteristics of a corresponding pixel. The sensing circuit may comprise a plural sensing units including an integrator for integrating currents respectively flowing two adjacent sensing lines connected to inverting and non-inverting input terminals of a fully differential amplifier, a sampling unit for respectively sampling two integral outputs of the integrator and a scaler for regulating an operating range of outputs of the sampling unit, a differential amplifier for differentially amplifying one or more outputs of the scaler, and an ADC for converting an output of the differential amplifier into a digital sensing value.

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