Electro-optical device, method of driving electro-optical device, and electronic apparatus

Abstract

To provide a technique for converting vertical resolution with a simple constitution. The electro-optical device is provided with a Y driver 13 which selects scanning lines 112 of odd numbered lines in the specified order and a Y driver 14 which selects scanning lines 112 of even numbered lines in the specified order. Therein, the Y driver 13 comprises a shift register 131 which shifts a transfer starting signal SPL according to a clock signal [Phi]L and, thereby, generates a logic signal for selecting scanning lines in the specified order, and an output control circuit 133 which narrows the logic signal into the L-level pulse width of an enable signal EnL and outputs the logic signal as a scanning signal for selecting the scanning lines. The Y driver 14 is also constituted in the similar manner. In such a constitution, in the case of the normal resolution mode, enable signals of which the phases are different from each other are supplied to the Y drivers 13, 14 and the scanning lines of the odd numbered lines and the even numbered lines are alternately selected. On the other hand, in the case of the low resolution mode, enable signals of approximately the same phase are supplied to the Y drivers 13, 14 and the two scanning lines of the adjacent odd numbered line and even numbered line are selected simultaneously.

Description

technical field [0001] The present invention relates to a technique for changing the display resolution of an electro-optic device. Background technique [0002] In electronic devices such as mobile phones, since the increase in the amount of information requires high-density display of images, the resolution of display devices has been increasing year by year. On the other hand, it is difficult to distribute high-definition moving images due to insufficient information transfer speed of communication devices and the like, so low-resolution images are often distributed at present. [0003] Here, when a low-resolution image is displayed on a high-resolution display device, only a part of the screen is used for display, so a resolution conversion device is required. Conventionally, a DSP (Digital Signal Processor) or the like has been used for such a conversion device, but there are problems such as high cost and delay in conversion processing. [0004] For this reason, ther...

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Problems solved by technology

[0006] However, in the above configuration, it is necessary to make the duty ratio different when comparing the modulated clock signal used when displaying a low-resolution image with the reference clock signal used when displaying a normal high-resolution image. , so in fact, it is necessary to generate the modulation clock signal from the reference clock signal, or it is necessary to generate the modulation clock signal in a different way from the reference clock signal, and accordingly the structure will be complicated

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