| 摘要 |
A pixellated device ( 10 ), such as a display, has pixel row and column address lines ( 18,20 ) for addressing each pixel, thereby providing signal data to each pixel ( 12 ) or reading signal data from each pixel. An array of memory cells ( 22 ) is provided on the substrate interspersed with the pixel drive circuitry ( 16 ), wherein memory address circuitry ( 24,26,28,30 ) is provided enabling data to be written to each memory cell and enabling data to be read from each cell ( 22 ), independently of the signal data. Each memory cell ( 22 ) is thus addressable independently of the pixel data. Thus, the memory cells do not form part of the pixel circuitry, which allows the memory to be used in a flexible manner. For example, the memory may be used for purposes not directly associated with the driving or addressing of the pixels of the device.
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