Title:
DRIVING METHOD FOR LIQUID CRYSTAL ELEMENT, DRIVING CIRCUIT FOR LIQUID CRYSTAL ELEMENT, SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE, AND DISPLAY DEVICE AND ELECTRONIC EQUIPMENT
Document Type and Number:
Japanese Patent JP3521658
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the best contrast in the case of multi-line driving of liquid crystal by selecting plural scanning lines for each of plural field period constituting a unit frame period and providing the liquid crystal with the period when the voltage is impressed, for each field period.
SOLUTION: A display control circuit 260 supplies a row address to a control circuit 218 for a field display period to read display data needed for the multi- line driving out of a RAM 220 and display them on a liquid crystal panel 400. For a blank period, on the other hand, a display OFF signal is supplied to a multi-line decoder 226. Whose output is fixed to fix all the data lines of the liquid crystal panel 400 at a reference voltage. At this point, a control signal which fixes a scanning-line driving voltage is inputted to an X driver 300 to fix all the scanning lines of the liquid crystal panel 400 at the reference voltage as well. This operation is performed for each field and when a field counter 270 detects a field count signal four times, one frame is ended.
Inventors:
Kurumisawa, Takashi
Isozaki, Shingo
Isozaki, Shingo
Application Number:
JP30875296A
Publication Date:
April 19, 2004
Filing Date:
November 05, 1996
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G02F1/133; G06F3/041; G09G3/36; (IPC1-7): G02F1/133; G06F3/033; G09G3/36
Attorney, Agent or Firm:
井上 一 （外２名）