| 摘要 |
<p>In a display device such as a thin-film EL display device, etc. formed with a dielectric layer disposed between a plurality of scanning side electrodes (Y) and a plurality of data side electrodes (X) in the direction for them intersecting to each other, a modulation voltage (VM) changed according to gradation display data is applied to the data side electrodes (X), and a positive or negative writing voltage (+VP, -VN) is applied to the scanning side electrodes (Y) in a line order for a gradation display different in brightness. Binary coded signals corresponding to each gradation of a gradation display are used as the gradation display data, and the logical value of the binary coded signal is inverted according to the polarity of the writing voltage (+Vp, -VN). Thus, a common gradation display can be performed from one binary coded signal for both the negative driving that applies a negative writing voltage (-VN) and the positive driving that applies a positive writing voltage (+VP). As a result, only by adding a data conversion circuit (18) for inverting a binary coded signal, the function that converts the correspondence relation between the gradation to be displayed and the gradation display data depending on the negative driving or positive driving can be incorporated.</p> |
