Title:
DRIVING METHOD FOR ACTIVE MATRIX TYPE LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPH0580725
Kind Code:
A
Abstract:
PURPOSE: To provide a driving system capable of a homogeneous halftone display on a display device which uses display picture elements consisting of liquid crystal.
CONSTITUTION: The amplitude VR of the applied signal of row electrodes and the amplitude 2Vc of the applied voltage of column electrodes are set to a range surrounded with an area of TTH<VR+VC-V0<VTH sandwiched between straight lines 51 and 52, an area of VR-VC-V0≤0 below a straight line, and an area of VR+2(VC-V0)≤0 below a straight line 4, where V0 is the threshold voltage of a nonlinear element, VSAT is the display saturated voltage of the liquid crystal, and VTH is the threshold voltage.
Inventors:
HOSOKAWA MINORU
Application Number:
JP7414792A
Publication Date:
April 02, 1993
Filing Date:
March 30, 1992
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G02F1/133; G09G3/36; (IPC1-7): G02F1/133; G09G3/36
Domestic Patent References:
| JPS52149090A | 1977-12-10 |
Attorney, Agent or Firm:
Minoru Yamada
Next Patent: JPH0580726