| 摘要 |
A display device capable of switching over between vertical and horizontal display on a screen without using a frame memory is provided. A display device has a source signal line driver circuit ( 102 ), a first gate signal line driver circuit ( 103 ), and a second gate signal line driver circuit ( 104 ). The scanning direction of the first gate signal line driver circuit ( 103 ) is perpendicular to the scanning direction of the source signal line driver circuit ( 102 ), and the scanning direction of the second gate signal line driver circuit ( 104 ) is perpendicular to the scanning direction of the first gate signal line driver circuit ( 103 ). During normal display, vertical scanning of the screen is performed by the first gate signal line driver circuit ( 103 ). Images are displayed in a direction that is in accordance with the scanning direction of the first gate signal line driver circuit ( 103 ). On the other hand, vertical scanning of the screen is performed by the second gate signal line driver circuit ( 104 ) when switching over between vertical and horizontal display. Images are displayed in a direction that is in accordance with the scanning direction of the second gate signal line driver circuit ( 104 ).
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