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PDF NT3960 Data sheet ( Hoja de datos )
| Número de pieza | NT3960 | |
| Descripción | TFT LCD Source Driver | |
| Fabricantes | Novatek | |
| Logotipo |  |
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NT3960
TFT LCD Source Driver
Features
Output : 300/309 output channels
6-bit resolution /64 gray scale
Dot inversion with polarity control
V1 ~ V10 for adjusting Gamma correction
Power for analog circuit : 6.5 ~ 10V
Output dynamic range : 0.1 ~ AVDD-0.1V
Power consumption of analog circuit : 2.5mA
Power for interface circuit : 3.0 ~ 3.6V
Operating frequency : 65MHz
Output deviation : 10 ~ 20mV
Data inverting for reducing EMI
Cascade function with bi-direction shift control
CMOS silicon gate ( p-type substrate )
COG
General Description
NT3960 is a data driver IC for a color TFT LCD panel. The channel number of 300 or 309 outputs is selectable for
SVGA and XGA applications. For better performance, dot inversion and a wide range voltage output, 6.5~10V, are designed
in this chip and for reducing EMI, data inversion control is used. This chip also supplies 10 sections of voltage-reference for
Gamma correction.
Block Diagram
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OUT1 OUT2 OUT3
OUT308OUT309
Out Driver Buffer ( 309 channels )
V1 ~ V10
10
Digital to Analog Converter
D00 ~ D05
D10 ~ D15
D20 ~ D25
6
6
6
Decoder
666
Level Shift
66
666
6
66
6 Line Latch ( 309 X 6 bits X 2 )
6
REV
DIO1
1
Shift Registers ( 103 or 100 )
103
Vcc GND AVDD AVSS
CLK
SHL
SELT
POL
LD
DIO2
1 V1.0
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NT3960
TFT LCD Source Driver
Power on/off sequence:
This IC is a high-voltage LCD driver, so may be damaged by a large current flow when an incorrect power sequence is used.
First connecting the logical power, Vcc & GND and then the drive power, AVDD&AVSS with V1~V10 as the last is the
recommended sequence. When shutting off the power, first shut off the drive power and then the logic system, or turn off all
power simultaneously.
Relationship between input data and output channels
(1) SHL=”1” , shift right, a start pulse from DIO1
Output OUT1 OUT2 OUT3
Order
First data
Data D05~D00 D15~D10 D25~D20
---
---
---
(2) SHL=”0”, shift left, a start pulse from DIO2
Output OUT1 OUT2 OUT3
Order
Last data
Data D05~D00 D15~D10 D25~D20
---
---
---
OUT307 OUT308 OUT309
Last data
D05~D00 D15~D10 D25~D20
OUT307 OUT308 OUT309
First data
D05~D00 D15~D10 D25~D20
Relationship between input data and output voltage
The figure below shows the relationship between the input data and the output voltage with the polarity. The range of
V1~V5 is for positive polarity, and V6 ~ V10 for negative polarity. Please refer to the following pages to get the relative resistor
value and voltage calculation method.
Gamma correction diagram
Vout
AVDD
V1
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V2
V3
V4
V5
Vcom
V6
V7
V8
V9
Positive polarity
Negative polarity
V10
AVSS
00H
08H
10H
18H
20H
28H
30H
38H
3FH Input Data
Remark : AVDD-0.1 > V1 > V2 > V3 > V4 > V5 ; V6 > V7 > V8 > V9 > V10 >AVSS+0.1V
Actual application( for reference only): AVDD=8.4V, V1=8.2V, V2=7.16V, V3=6.72V, V4=6.38V,
V5=4.98V, V6=3.44V, V7=2.08V, V8=1.70V, V9=1.28V, V10=0.20V.
5
5 Page 
Function operation
NT3960
TFT LCD Source Driver
CLK
DIO1/2
( Input )
LD
Data,
REV
N-2
1CLK ( max.)
N-1 N
Last Data
3 CLK (min.)
1CLK
1
23
First Data
LD
POL
Odd Outputs
Even Outputs
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Vcom
V1 ~V5
V6 ~V10
V1 ~V5
V6 ~V10
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet NT3960.PDF ] | |
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