Invention Grant
- Patent Title: Current sensing device and organic light emitting display device including the same
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Application No.: US16583011Application Date: 2019-09-25
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Publication No.: US10818234B2Publication Date: 2020-10-27
- Inventor: Eunji Song , Kimin Son
- Applicant: LG Display Co., Ltd.
- Applicant Address: KR Seoul
- Assignee: LG DISPLAY CO., LTD.
- Current Assignee: LG DISPLAY CO., LTD.
- Current Assignee Address: KR Seoul
- Agency: Seed IP Law Group LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6d2f31a5
- Main IPC: G09G3/3241
- IPC: G09G3/3241 ; G09G3/3291

Abstract:
A current sensing device and an organic light emitting display device including the same are disclosed. The current sensing device includes a sensing unit selectively connected to a pixel and a reference current source through a sensing line. The sensing unit includes a plurality of resistors connected to a first node and setting a divided voltage according to a pixel current input from the pixel and a reference current input from the reference current source, a first MOS transistor connected between the first node and a second node, a second MOS transistor diode-connected to the second node, and a comparator having an inverting input terminal connected to a third node, a non-inverting input terminal connected to a fourth node, comparing a reference voltage charged at the third node when the reference current is input and a pixel voltage charged at the fourth node when the pixel current is input, and outputting a comparison result.
Public/Granted literature
- US20200105195A1 CURRENT SENSING DEVICE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME Public/Granted day:2020-04-02
Information query
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