Invention Grant
- Patent Title: Illumination sensing device having a reference voltage setting apparatus and a display device including the illumination sensing device
- Patent Title (中): 具有参考电压设定装置和包括该照明感测装置的显示装置的照明感测装置
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Application No.: US12915487Application Date: 2010-10-29
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Publication No.: US09001095B2Publication Date: 2015-04-07
- Inventor: Sung-Un Park , Soon-Sung Ahn , Do-Youb Kim
- Applicant: Sung-Un Park , Soon-Sung Ahn , Do-Youb Kim
- Applicant Address: KR Yongin-si
- Assignee: Samsung Display Co., Ltd.
- Current Assignee: Samsung Display Co., Ltd.
- Current Assignee Address: KR Yongin-si
- Agency: Christie, Parker & Hale, LLP
- Priority: KR10-2009-0106650 20091105
- Main IPC: G06F3/038
- IPC: G06F3/038 ; G09G5/00 ; H03K3/356 ; G09G3/20
Abstract:
A reference voltage setting apparatus including: a current generator having a first device to supply a first dark current and a second device to supply a second dark current; a first operational amplifying unit connected to the current generator; and a voltage setting unit connected to the first operational amplifying unit and setting a reference voltage having a compensated offset voltage of the first operational amplifying unit, and an illumination sensing device and a display device including the reference voltage setting apparatus.
Public/Granted literature
Information query
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