Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2005-05-10
2005-05-10
Liang, Regina (Department: 2674)
Computer graphics processing and selective visual display system
Display driving control circuitry
C345S690000, C345S207000
Reexamination Certificate
active
06891532
ABSTRACT:
The present invention provides a picture element inspecting apparatus and method for an active matrix type display that is constituted by an LCD array device or an EL array device, which is capable of canceling the irregularities in source switches13, the noise caused by device driving signals, and the irregularities in devices in the measurement apparatus, and enhancing the accuracy of a picture element inspection. The present invention is based on the finding that irregularities in the direction of the source lines8can be canceled by performing, in addition to a charging step and first sensing step that are realized by the charging and discharging of picture elements2, a second sensing step in a state where gate lines are not selected, and subtracting correction picture element data thus obtained, and is characterized in that a subtraction operation is performed on effective picture element data obtained by electrically charging picture elements2, and correction picture element data obtained in a state where gate lines9of picture elements2are not selected, and the quality of the picture elements2is determined based on the subtraction output.
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Itoh Masatoshi
Nara Shouji
Ookuma Makoto
Liang Regina
Nguyen Jennifer T.
Ostrolenk Faber Gerb & Soffen, LLP
Wintest Corporation
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