CXD2458 データシートの表示（PDF） - Sony Semiconductor

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CXD2458

Timing Generator for Color LCD Panels

Sony Semiconductor 

CXD2458AR

Right/Left Inverse Display

The CXD2458AR outputs a right/left inversion timing pulse that supports the right/left inverse display function

of the LCX005BK/BKB, LCX024AK, LCX009AK/AKB and LCX027AK.

The LCD panel is arranged in a delta pattern, where the same signal line is 1.5-dot offset at adjoining vertical

lines. For this reason, a 1.5-dot offset is attached to the horizontal start pulse (HST) of the LCD between odd

lines and even lines in order to correct this difference. Other H system output pulses are also 1.5-dot offset.

When the panel is driven with left scan (Reverse scan), this offset relationship becomes inverted for even and

odd lines, and the asymmetrical dot arrangement produces an offset.

Therefore, the CXD2458AR internally controls the right/left and interline offset to allow right scan or left scan

display by setting RGT = H or L for right/left inversion.

Right scan

(Normal scan)

Left scan

(Reverse scan)

H SCANNER

Display area

SH Pulse and HCK Phase Relationship

The phase relationship between the SH pulse and HCK changes according to switching between right scan

(Normal scan) and left scan (Reverse scan). SH3 is the re-sampling pulse.

RGT = H (Normal scan)

RGT = L (Reverse scan)

HCK1/2

SH1

SH2

SH3

SH4

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