Electroluminescence display apparatus

Details Electroluminescence display apparatus Electroluminescence display apparatus

2011-08-30

2011-08-30

Lao, Lun-Yi (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C250S553000, C345S082000, C345S204000, C345S214000

Reexamination Certificate

active

08009129

ABSTRACT:
During a blanking period of a video signal, an element driving transistor for controlling a drive current supplied to an EL element is operated in its saturation region to thereby set the EL element to an emission level, and a current flowing through the EL element at that time is detected. Each current detector includes a current detection amplifier and a successive approximation type AD converter, and a DA converter of the successive approximation type AD converter is commonly shared among a plurality of the AD converters. With this arrangement, sufficient AD converting speed can be attained while using a simple structure to execute current detection for correcting display variations.

REFERENCES:
patent: 2005/0237318 (2005-10-01), Inoue et al.
patent: 2008/0218453 (2008-09-01), Miyamoto et al.
patent: 2008/0303754 (2008-12-01), Murata et al.
patent: 2005-316408 (2005-11-01), None

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