Liquid crystal display device for display with gray levels

A liquid crystal display apparatus, comprising:

• a plurality of scan electrodes arranged in parallel in a first direction;
• a plurality of data electrodes arranged in parallel in a second direction perpendicular to said plurality of scan electrodes,
• said plurality of scan electrodes and said plurality of data electrodes being utilized in a set of three electrodes each, thereby defining a 3.times.3 matrix of rows and columns of picture elements, said matrix of picture elements further comprising,
• a first group of pixels consisting of corner pixels of said matrix,
• a second group of pixels consisting of first and third pixels of a second row of said matrix,
• a third group of pixels consisting of first and third pixels of a second column of said matrix,
• a fourth pixel group consisting of a center pixel of said matrix,
• drive means for driving selected ones of said scan and data electrodes to display picture elements selected based upon a desired gray level display,
• wherein said first group of pixels comprises pixels of a first size, said second group of pixels comprises pixels of a second size, and said third group of pixels comprises pixels of a third size, and said fourth group of pixels comprises pixels of a fourth size, said first group of pixels being greater in size than said second, third and fourth groups, said second group of pixels being greater in size than said third and fourth groups, and said third group of pixels is greater in size than said fourth group, and
• wherein the ratio of the sums of the areas of said first, second, third and fourth groups of pixels is defined by the expression:
• E:F:G:H-64:16:4:1
• where E is the area of the first group of pixels, F is the area of the second group of pixels, G is the area of the third group of pixels, and H is the area of the fourth pixel group, thereby effecting a display having 256 gray levels.