| 摘要 |
It is an object of the invention to reduce a leakage low-frequency electric field from a panel section of a matrix type. In the case where a panel section has a usual current structure in which the panel section has a single common electrode elongating over the whole of the display region of the panel section, the maximum voltage difference of a reference signal supplied to the common electrode is defined to be 0.3678xx-0.6136 (wherein x is the area of the display region) or less. In the case where the panel section has the so-called counter source structure and a plurality of column electrodes, the maximum voltage difference of a reference signal supplied to the column electrodes is defined to be ax-b (wherein a=0.3565xy-0.6829, b=-0.0937y+0.7091, and y is a ratio of the area of all the column electrodes to the area of the display region) or less. In the case where a panel section has the counter source structure, the average area per unit length of one part of the column electrode opposed to a signal line is smaller than the average area per unit length of the remaining part of the column electrode other than the one part.
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