LCX021AM datasheet(14/24 Pages) SONY

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LCX021AM

Black level

White level

Vsig waveform

7.0V

4.5V

2.0V

4.5V

2.0V

5. Flicker

Flicker (F) is given by the formula (5). DC and AC (SVGA:30Hz, rms) components of the panel output signal

for gray raster∗ mode are measured by a DC voltmeter and a spectrum analyzer in system II.

F [dB] = 20log

{

AC component } ...(5)

DC component

6. Image retention time

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

of Vsig = 7.0 ± VAC (VAC: 3 to 4V). Judging by sight at the VAC that holds the maximum image retention,

measure the 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 = 6.6V

7. Cross talk

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

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

Cross talk value CTK =

× 100 [%]

∗ Each input signal voltage for gray raster mode

is given by Vsig = 7.0 ± V50 [V]

where: V50 is the signal amplitude which gives

50% of transmittance in V-T characteristics.

Wi' – Wi

W1 W1'

W3 W3'

LCX021AM Fiches technique(PDF) 14 Page - Sony Corporation