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LV4141W Fiches technique(PDF) 4 Page - Sanyo Semicon Device

No de pièce LV4141W
Description  Bi-CMOS LSI For LCD Panel Drive Single Chip IC
Download  27 Pages
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Fabricant  SANYO [Sanyo Semicon Device]
Site Internet  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LV4141W Fiches technique(HTML) 4 Page - Sanyo Semicon Device

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LV4141W
No.8927-4/27
Continued from preceding page.
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Sub-brightness R change
rates
SBBRTR
Measure the change amount of TP45 output black
level when SIG2 is entered in (A) and COMW is
changed from 128 to 255 and that of TP45 output
white level change amount when COMW is
changed from 128 to 0.
±1.3
±1.7
V
Sub-brightness B change
rates
SBBRTR
Measure the change amount of TP40 output black
level when SIG2 is entered in (A) and COMW is
changed from 128 to 255 and that of TP45 output
white level when COMW is changed from 128 to 0.
±1.3
±1.7
V
Gain difference between RGB
signals
ΔGRGB
Determine the level difference of non-inverted
output amplitude (white to black) of TP40, TP43,
and TP45 when SIG3 is entered to (A).
-0.6
0
0.6
dB
Sub-contrast R change rate
SBCNTR
Measure the non-inverted output (white to black) of
TP45 for the non-inverted output (white to black) of
TP43 when SIG3 is entered to (A) and when
R-CNT = 0 and R-CNT = 255.
±2.0
dB
Sub-contrast B change rate
SBCNTB
Measure the non-inverted output (white to black) of
TP40 for the non-inverted output (white to black) of
TP43 when SIG3 is entered to (A) and when
B-CNT = 0 and B-CNT = 255.
±2.0
dB
RGB inverted/non-inverted
gain difference
ΔGINV
Determine the difference of inverted output
amplitude for the non-inverted output amplitude
(white to black) of TP40, TP43, and TP45 when
SIG3 is entered to (A).
-0.5
0
0.5
dB
[RGB signal system]
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Black level potential difference
between RGB signals
ΔVBL
Determine the difference between highest and
lowest black levels for inverted and non-inverted
outputs of TP40, TP43, and TP45 when SIG3 is
entered to (A).
300
mV
G
γL
23
26
29
dB
G
γM
12
15
18
dB
Gamma gain
G
γH
Enter SIG7 into (A) and set the non-inverted output
amplitude (black and white) of TP43 at
γ1 = 120, γ2
= 0 to 2.7Vp-p with CONT. Adjust the amplitude
(black and white) to 3.5Vp-p with
γ2 and the black
level to 1.5V with BRT. Measure VG1, VG2 and
VG3 and calculate as follows :
G
γL = 20log (VG1/0.0357)
G
γM = 20log (VG2/0.0357)
G
γH = 20log (VG3/0.0357)
(See Fig. 4.)
23
26
29
dB
V
γ1MN
0IRE
γ1 adjustment variable range
V
γ1MX
Enter SIG7 to (A) and set the TP43 output (black to
black) to 3Vp-p through BRIGHT adjustment.
Read the
γ gain change point at γ2 = 0, γ2 = 255 by
referring to the IRE level of input signal :
V
γ1MN forγ1 = 0 Vγ1MX for γ1 = 255
100
IRE
V
γ2MN
100
IRE
γ2 adjustment variable range
V
γ2MX
Enter SIG7 to (A) and set the TP43 output (black to
black) to 3Vp-p through BRIGHT adjustment.
Read the
γ gain change point atγ1 = 0, γ1 = 255 by
referring to the IRE level of input signal :
V
γ2MN forγ2 = 0 Vγ2MX for γ2 = 255
0IRE
tCOMH
1
1.5
μs
Antipole transition time
tCOML
Enter SIG3 to (A) and set the output amplitude of
TP38 to 3Vp-p. Measure tCOMH for rise and
tCOML for fall. Load : 1000pF
1
1.5
μs
VBLIMN
4.5
Vp-p
RGB output black limiter
variablerange
VBLIMX
Enter SIG2 to (A) and measure the amplitude of
the black side limiter of inverted/non-inverted
TP38, 40, 43 and 45 output.
2
Vp-p
VWLIMN
4
Vp-p
RGB output white limiter
variablerange
VWLIMX
Enter SIG2 to (A) and measure the amplitude of
the white side limiter of inverted/non-inverted
TP38, 40, 43 and 45 output.
2.2
Vp-p
Continued on next page.


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