Test circuit for liquid crystal display device, LCD device...

Details Test circuit for liquid crystal display device, LCD device... Test circuit for liquid crystal display device, LCD device...

2011-03-29

2011-03-29

Nguyen, Ha Tran T (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C345S087000

Reexamination Certificate

active

07915906

ABSTRACT:
A test device for detecting malfunction of a liquid crystal display device, and also provide a liquid crystal display device incorporated with such test device. The test device comprising a comparator circuit for detecting which of the rows or columns of the lines is selected, an encoder circuit receiving the detection result from the comparator circuit, a plurality of bus lines and a read-out circuit reading the voltage level of the bus lines from the encoder circuit to determine if the encoded number is identical with the number of the selected row or column line, wherein the comparator circuit, the encoder circuit, and the read-out circuit being built in the same substrate as the liquid crystal display elements.

REFERENCES:
patent: 6850085 (2005-02-01), Sakaguchi et al.
patent: 7746093 (2010-06-01), Cha
patent: 2004/0217773 (2004-11-01), Nara et al.
patent: 2005/0200377 (2005-09-01), Orii et al.
patent: 07-199220 (1995-08-01), None
patent: 2000-047255 (2000-02-01), None
PCT International Search Report of Counterpart PCT Application No. PCT/JP2006/309336.

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