Title:
ACTIVE MATRIX TYPE DISPLAY DEVICE AND ITS DRIVING METHOD
Document Type and Number:
Japanese Patent JP3536006
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform pseudo impulse displays for reducing afterimages when performing a moving picture display in an active matrix type display device without increasing the frequency of a driving signal and changing the mechanism of a back light.
SOLUTION: The displaying of pictures is performed by forming liquid crystal capacitors 4 in vicinities of intersection parts of signal lines 2X and scanning lines 2Y. An auxiliary capacitor 5 for holding a potential difference when performing a display is provided with respect to the liquid crystal capacitance 4. One of auxiliary capacitance electrodes 8 in both electrodes of the capacitor 5 is connected to a switching element 3 together with a pixel electrode 7 being one side in both electrodes of the capacitance 4. After the element 3 is brought into conduction selectively with the scanning line 2Y and capacitance 4 and the capacitor 5 are charged with a video signal from the signal line 2X, after a fixed time is elapsed, a signal which changes in a direction along which luminance of a display by the capacitor 4 is lowered is applied to the electrode of other side of capacitor 5 by an auxiliary capacitance driver 9 and, then, a pseudo impulse display is performed. Thus, the afterimage characteristic of the display device is improved.
Inventors:
Ban, Atsushi
Okada, Yoshihiro
Nakamura, Wataru
Okada, Yoshihiro
Nakamura, Wataru
Application Number:
JP2000072649A
Publication Date:
June 07, 2004
Filing Date:
March 15, 2000
Export Citation:
Assignee:
SHARP CORP
International Classes:
G02F1/133; G09G3/20; G09G3/36; H04N5/66; (IPC1-7): G09G3/36; G02F1/133; G09G3/20; H04N5/66
Attorney, Agent or Firm:
西教 圭一郎