LCX007BNB データシートの表示（PDF） - Sony Semiconductor

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LCX007BNB

3.4cm (1.35-inch) Black-and-White LCD Panel

Sony Semiconductor 

LCX007BNB

5. Flicker

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

panel output signal for gray raster∗1 mode are measured by a DC voltmeter and a spectrum analyzer in

System II.

{ } AC component

F [dB] = 20 log

... (7)

DC component

∗1 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

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 of

Vsig = 7.0 ± VAC (VAC: 3 to 4V). Hold VAC that maximizes image retention judging by sight. 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

Cross talk CTK =

Wi' – Wi

Wi

× 100 [%]

W4'

W3 W3'

– 13 –

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