LCX012BL データシートの表示（PDF） - Sony Semiconductor

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LCX012BL

3.3cm (1.3-inch) Black-and-White LCD Panel

Sony Semiconductor 

LCX012BL

5. Flicker

Flicker (F) is given by the formula (7). DC and AC (NTSC VGA: 30Hz, rms, PAL: 25Hz, rms) components of

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

System II.

F [dB] = 20log { AC component } ... (7)

DC component

∗ Each input signal condition 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.

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 VAC that hold 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

4.5V

7.0V

Black level

2.0V

White level

2.0V

4.5V

0V

Vsig waveform

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)

W1 W1’

W2

W2’

W4

W4’

Cross talk value CTK =

Wi' – Wi

Wi

× 100 [%]

W3 W3’

– 13 –

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