Title:
DRIVING METHOD AND DRIVING CIRCUIT FOR IMAGE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP3168938
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal display device, in which such underscanning display that an value for a total row number from a vertical side display start position to the next vertical side display start position to be enlarged at a given enlargement ratio is smaller than a row number in the liquid crystal display device shows written rows being the same between an odd-number display field and an even-number display field in the loop-back area of a display field and prevents the occurrence of not-written rows, when enlargement display is performed by an interlaced scanning.
SOLUTION: A display field final row enlargement pattern detector 5 detects in which pattern of enlargement patterns selected outside the final row of a display field is completed in a loop-back area between display fields. In accordance with its result, the driving waveform of a driving signal from a vertical driver for which a loop-back controller between display fields 8 controls enlargement display is changed to keep interlaced scanning in a regulating property.
Inventors:
Noboru Okuzono
Application Number:
JP13717797A
Publication Date:
May 21, 2001
Filing Date:
May 27, 1997
Export Citation:
Assignee:
NEC
International Classes:
G09G3/36; G09G3/20; H04N5/66; (IPC1-7): G09G3/20; H04N5/66
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)