Invention Grant
- Patent Title: Simplified sensing circuit and sample and hold circuit for improving uniformity in OLED driver
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Application No.: US16253171Application Date: 2019-01-21
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Publication No.: US11276346B2Publication Date: 2022-03-15
- Inventor: Jin-Yi Lin , Chieh-An Lin , Jhih-Siou Cheng , Ju-Lin Huang
- Applicant: NOVATEK Microelectronics Corp.
- Applicant Address: TW Hsin-Chu
- Assignee: NOVATEK Microelectronics Corp.
- Current Assignee: NOVATEK Microelectronics Corp.
- Current Assignee Address: TW Hsin-Chu
- Agent Winston Hsu
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G09G3/3225 ; G11C27/02 ; H03F3/45 ; H03K3/356

Abstract:
A sensing circuit for an organic light-emitting diode driver includes a sample and hold circuit and a gain amplifier. The sample and hold circuit is configured to sample a sensing signal received via an input terminal. The gain amplifier is coupled to the sample and hold circuit. The sample and hold circuit includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch and a fourth switch. The first capacitor is coupled between the input terminal and the gain amplifier. The second capacitor is coupled between a reference terminal and the gain amplifier. The first switch is connected between the first capacitor and the input terminal. The second switch is connected between the second capacitor and the reference terminal. The third switch is connected between the first capacitor and the gain amplifier. The fourth switch is connected between the second capacitor and the gain amplifier.
Public/Granted literature
- US20200234636A1 SIMPLIFIED SENSING CIRCUIT AND SAMPLE AND HOLD CIRCUIT FOR IMPROVING UNIFORMITY IN OLED DRIVER Public/Granted day:2020-07-23
Information query
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