Invention Grant
- Patent Title: Light emitting device, display device, and LED display device
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Application No.: US16449217Application Date: 2019-06-21
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Publication No.: US10891895B2Publication Date: 2021-01-12
- Inventor: Hidekazu Miyata , Noriaki Yamaguchi
- Applicant: SHARP KABUSHIKI KAISHA
- Applicant Address: JP Sakai
- Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee: SHARP KABUSHIKI KAISHA
- Current Assignee Address: JP Sakai
- Agency: ScienBiziP, P.C.
- Main IPC: G09G3/3233
- IPC: G09G3/3233 ; G09G3/3258 ; G09G3/20

Abstract:
A plurality of LED drive circuits are provided so as to correspond one-to-one with plurality of LED units arranged in matrix. In the LED drive circuit, a data voltage is written to a memory capacitor in a charge period that appears every one frame period, in the LED drive circuit, the reset control transistor is turned on and off more than once after a time point at which the charge period ends until a time point at which the next charge period starts, so that a lighting enable period in which a lighting period control operation is performed is provided more than once every one frame period.
Public/Granted literature
- US20200005710A1 LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND LED DISPLAY DEVICE Public/Granted day:2020-01-02
Information query
IPC分类: