The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Sep. 23, 2008
Aung Aung Yinn, Sinshih Township, Tainan County, TW;
Tyng-yang Chen, Sinshih Township, Tainan County, TW;
Chow-peng Lee, Sinshih Township, TW;
Aung Aung Yinn, Sinshih Township, Tainan County, TW;
Tyng-Yang Chen, Sinshih Township, Tainan County, TW;
Chow-Peng Lee, Sinshih Township, TW;
Himax Analogic, Inc., Sinshih Township, Tainan County, TW;
Abstract
A short detection circuit to detect a short condition in a backlight module, wherein the backlight module comprises a WLED circuit having a first terminal connected to an output voltage and second terminal connected to a driver IC. The short detection circuit comprises: a PMOS, a NMOS, a load and a detection module. The gate of the PMOS receives a first voltage and the source of the PMOS connects to the second terminal; the gate of the NMOS receives a reference voltage, the drain of the NMOS connects to the drain of the PMOS and the source of the NMOS connects to a detection terminal. The voltage of the detection terminal becomes a high state when the WLEDs have a short condition; and the detection module is connected to the detection terminal, when the voltage of the detection terminal becomes a high state, the detection module detects a short condition.