COM and SEG drivers with 4 to 5 voltage levels
CL1, CL2, D and M lines for external drivers.
where CL1, CL2, D and M are:
The display panel is organized in rows driven by the controller COMs, while columns are driven by controller or auxiliary driver SEG lines.
The driving scheme for passive matrix displays depends on the arrangement of character groups and format (e.g. 5x8, 5x10, 5x11), but is most often seen to be 1:16-multiplexed with 1/5 level bias.
The 1:2 multiplex scheme below (taken from the NXP PCF2119 datasheet) conveys the idea in a more accessible fashion. STN pixels at the junction of row and column conductor stripes see a differential AC waveform. Small amplitudes don t cause a pixel to switch, and in this case, pairs of frames must be generated complementarily to create a zero time average (no DC component).
Toshiba introduces lens reduction type CCD linear image sensor for A3 multifunction printers 17th March 2021
Toshiba: TCD2726DG, a lens reduction type CCD linear image sensor that achieves high-speed scanning for A3 multifunction printers. ANTARA/Business Wire
Tokyo (Antara/Business Wire)- Toshiba Electronic Devices & Storage Corporation ( Toshiba ) has launched “TCD2726DG,” a lens reduction type CCD linear image sensor that achieves high-speed scanning for A3 multifunction printers. Shipments of engineering samples[1] start today.
There is growing demand for A3 multifunction printers with higher scanning speeds. TCD2726DG meets the demand by improving the performance with a faster operating clock rate: a 100MHz (50MHz x 2ch) data rate, against the 70MHz (35MHz x 2ch) data rate of Toshiba’s current sensor[2].
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