Loading patent…
AssigneeSharp Kabushiki Kaisha
InventorsKouji Kumada, Takashige Ohta, Haruhito Kagawa
Estimating the term…
In a signal line drive circuit of an active-matrix type liquid-crystal display which is a voltage-controlled type display with a capacitive load, n selector switches (161 to 16n) are provided between buffer circuits (151 to 15n) to which voltages responsive to an image to be displayed are inputted from reference voltage selection circuits (131 to 13n), and output terminals (T1 to Tn) to which are connected image signal lines. These selector switches (161 to 16n), based on a shorting control signal (Csh) that is at a high level when the polarity is reversed to perform AC drive of the liquid-crystal panel, switch the output signals (OUT1 to OUTn of the image signal line drive circuit between the output signals of the buffer circuits (151 to 15n) and the common electrode signal (Vcom). By doing this, each of the image signal lines is, for a prescribed time only when the polarity is reversed, separated from the buffer circuits (151 to 15n) and shorted to the common electrode. This configuration reduces the power consumption of the signal line drive circuit
A display device in which a voltage serving as an image signal representing an image to be displayed is applied to a capacitive load including a capacitance formed by mutually opposing first and second electrodes, and which has a drive circuit that causes the voltage applied to the capacitive load to reverse polarity periodically, the display device comprises:
A drive circuit in a display device of the AC drive type, in which a voltage serving as an image signal representing an image to be displayed is applied to a capacitive load including a capacitance formed by mutually opposing first and second electrodes, and in which the polarity of the voltage applied to the capacitive load is periodically reversed, the drive circuit comprising:
A method for driving by means of a driving circuit in a display device of the AC drive type, in which a voltage serving as an image signal representing an image to be displayed is applied to a capacitive load including a capacitance formed by mutually opposing first and second electrodes, and in which the polarity of the voltage applied to the capacitive load is periodically reversed, the method comprising:
Dependencies are inferred from the claim text.