Tpo Hong Kong Holding Limited

Hirofumi Watsuda

Hajime Nagai

A voltage supplying device () comprising a video line (LV), a video line (LVn), a source line (LS) of a source line group (GS) supplied with a gray scale voltage through the video line (LV), a source line (LSn) of a source line group (GS) supplied with a gray scale voltage through the video line (LVn), a source line (LS) of a source line group (GS) supplied with a voltage through the video line (LV), and a controlling means for continuing to supply the source line (LSn) of the source line group (GS) during a transition from a state in which the source line (LS) of a source line group (GS) is supplied with a voltage to a state in which the source line (LSn) of a source line group (GS) is supplied with a voltage.

Voltage supplying device

A display device having a control circuit for changing a time period of applying a signal voltage to each of the signal lines and a scanning voltage to each of the scanning lines within one vertical scanning period (T). The control circuit controls each of horizontal scanning periods (tto t) in such a manner that the period is gradually increased from the scanning line located close to a vertical driving circuit to the scanning line located remote from the vertical driving circuit. In this way, when writing a signal voltage to a pixel via the signal lines, the target potential is reached at each pixel within the time period of applying the signal voltage.

Device and method for varying the row scanning time to compensate the signal attenuation depending on the distance between pixel rows and column driver

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Tokyo, Japan

Hirofumi Watsuda