Title:
液晶中間調表示方法及びその方法を用いた液晶表示装置
Document Type and Number:
Japanese Patent JP4390483
Kind Code:
B2
Abstract:
An liquid crystal display (LCD) device uses a method for displaying halftone without causing luminance differences among pixels when an FRC technique is used, and without causing stripe-shaped luminance variations when a flicker component is eliminated spatially. The LCD device includes a data splitter, a pixel location detecting circuit, a frame number determining circuit, an applied timing memory circuit, an applied voltage determining circuit, a summation process circuit, and a timing adjusting circuit. The LCD device determines driving voltages such that for each of a high voltage or a low voltage during these 2N frames, the number of applying positive voltages is the same as the number of applying negative voltages where a unit period is 2N frames for multi-gray-level display of (1+N) levels. The LCD device can improve image quality since the average luminance of each pixel is made uniform.
Inventors:
Akihiko Inoue
Application Number:
JP2003175251A
Publication Date:
December 24, 2009
Filing Date:
June 19, 2003
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G02F1/133; G09G3/20; G09G3/36; H04N5/66
Domestic Patent References:
| JP6347758A | ||||
| JP8043795A | ||||
| JP2002189453A | ||||
| JP6138846A | ||||
| JP2001034239A |
Attorney, Agent or Firm:
Akihiro Shimada