Talk:Active matrix
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[edit]This page shouldn't redirect to the AMLCD page as "active matrix" is a generic technology that can apply to any kind of display material. --01:22, 21 October 2011 (UTC) Shouldn't it be m x n instead of m + n signals needed to adress the matrix? — Preceding unsigned comment added by 84.186.96.211 (talk) 13:41, 24 June 2012 (UTC)
Where's the beef
[edit]"...to a switch-device, which actively maintains the pixel state while other pixels are being addressed..." Can we get a deeper description on how this is done? the switch device 'remembers' the applied signal by using xyz, and continuously applies this signal to the pixel while other pixels are being addressed). Zerohourrct (talk) 16:55, 20 July 2013 (UTC)
- Agreed, it's not made clear that matrix addressing needs something like a diode at each crossing point, so if row selectors are driven high (say) in turn and column selectors are driven low for all the active pixels in the current row then the diodes will conduct only when properly addressed. As a linked references puts it "To demonstrate the concept Lechner's group built a display using discrete MOS transistors and a shift register to scan the electrodes. Row selection pulses were applied to the gate terminals of the transistors while the column signals were connected to the drain terminals. The liquid crystal cells, in parallel with storage capacitors, were connected to the transistors' source terminals." Presumably a connection to the power rail on the other side of the liquid crystal cell is implied.
- But then the capacitor and the power rail connection are the bits that make the display 'active' -- there is no fancy bi-stable, dual-gated transistor cleverness; pull back the curtain and it's just a decaying capacitor. There must be more to it nowadays. 213.31.175.153 (talk) 13:41, 5 May 2021 (UTC)
Invention claims
[edit]Recently, the category Hungarian inventions has been added/deleted. The basic concept of active-matrix addressing of LCDs has been invented by Bernard Lechner, an American, not T. Peter Brody, who immigrated to the US from Hungary. The mayor contributors to this invention have been described by IEEE.[1] Whether Fang-Chen Luo was an immigrant as well, I don't know. BBCLCD (talk) 17:22, 1 October 2016 (UTC)
References