| 摘要 |
<p>The invention concerns a method for ensuring the operational security of liquid crystal displays to prevent their breakdown from being unnoticed. The method consists in using the polarising layers with perpendicular polarising axes and in controlling the columns (203) of the pixel matrix ensuring the display such that in case one of the two control cards (204, 205) of said columns breaks down, this does not cause one of the colours to disappear but a coloured comb to be superposed on the image. The method further consists in commanding a polarisation reversal from one writing to the next as soon as possible in the chain generating the column control signals. The method enables to obtain, in case of breakdown, the display of parasitic light signals which attract the observer's attention.</p> |
