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LCX019AM

5. Flicker

Flicker (F) is given by the formula (5). DC and AC (NTSC: 30Hz, rms, PAL: 25Hz, rms) components of the

panel output signal for gray raster∗ mode are measured by a DC voltmeter and a spectrum analyzer in

system II.

AC component

F [dB] = 20log

{

DC component

6. Image retention time

Image retention time is given by following procedures.

Apply the monoscope signal to the LCD panel for 60 minutes and then change this signal to the gray scale

time till the residual image becomes indistinct.

∗ Monoscope signal conditions:

Vsig = 7.0 ± 4.5 or ± 2.0 [V]

(shown in the right figure)

Vcom = 6.8V

7. Cross talk

Cross talk is determined by the luminance differences between adjacent areas represented Wi' and Wi (i =

1 to 4) around black window (Vsig = 4.5V/1V).

Cross talk CTK =

× 100 [%]

∗ Each input signal condition for gray raster mode is given by

transmittance in V-T characteristics.

Black level

White level

Vsig waveform

7.0V

0V

4.5V

2.0V

4.5V

2.0V

W1 W1'

W3 W3'

W2

W2'

W4

W4'

Wi' – Wi

Wi