Invention Grant
US08269751B2 Photo element and driving method thereof and liquid crystal display
有权
照片元件及其驱动方法和液晶显示器
- Patent Title: Photo element and driving method thereof and liquid crystal display
- Patent Title (中): 照片元件及其驱动方法和液晶显示器
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Application No.: US12626669Application Date: 2009-11-26
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Publication No.: US08269751B2Publication Date: 2012-09-18
- Inventor: Ting-Chung Liu , Po-Yang Chen , Hsien-Tang Hu , Chien-Chih Hsiau
- Applicant: Ting-Chung Liu , Po-Yang Chen , Hsien-Tang Hu , Chien-Chih Hsiau
- Applicant Address: TW Taipei
- Assignee: Hannstar Display Corp.
- Current Assignee: Hannstar Display Corp.
- Current Assignee Address: TW Taipei
- Agency: Huffman Law Group, P.C.
- Priority: TW98109166A 20090320
- Main IPC: G06F3/042
- IPC: G06F3/042
Abstract:
A photo element includes a photo thin film transistor (TFT), a switch thin film transistor, and a compensation thin film transistor. A bias line provides a bias voltage to the photo TFT. The photo TFT generates a photo-induced current under an illuminated environment. A first switch line provides a voltage to open the switch TFT, and thus the photo-induced current is read out through a readout line. A second switch line provides compensation current to open the compensation TFT. The compensation current applies a reverse-biased stress to the photo TFT; therefore the threshold voltage and sensitivity of the photo TFT can be maintained.
Public/Granted literature
- US20100238140A1 Photo Element and Driving Method Thereof and Liquid Crystal Display Public/Granted day:2010-09-23
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