- Patent Title: Color display device with pixel circuits including two capacitors
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Application No.: US15639242Application Date: 2017-06-30
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Publication No.: US09837023B2Publication Date: 2017-12-05
- Inventor: Noritaka Kishi , Noboru Noguchi , Masanori Ohara , Shigetsugu Yamanaka
- Applicant: Sharp Kabushiki Kaisha
- Applicant Address: JP Sakai
- Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee Address: JP Sakai
- Agency: Morrison & Foerster LLP
- Priority: JP2011-241327 20111102
- Main IPC: G09G3/32
- IPC: G09G3/32 ; G09G3/3258 ; G09G3/3275 ; G09G3/3225 ; G09G3/3291 ; G09G3/3283

Abstract:
In a pixel circuit, TFTs are connected and driven such that a threshold voltage Vth of a TFT, which is a drive transistor, can be held in a threshold holding capacitor having a capacitance value c1, voltages, including a data potential Vdata representing an image to be displayed, can be held in a data holding capacitor having a capacitance value c2, and charges in the data holding capacitor and the threshold holding capacitor are redistributed at the time of light emission. As a result, a potential obtained by multiplying the data potential Vdata by c1/(c1+c2) is provided to a gate potential of the TFT.
Public/Granted literature
- US20170316741A1 COLOR DISPLAY DEVICE WITH PIXEL CIRCUITS INCLUDING TWO CAPACITORS Public/Granted day:2017-11-02
Information query
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