ETC NT3966

NT3966
TFT LCD Source Driver
Features
n Output : 420 output channels
n 6-bit resolution /64 gray scale
n Dot inversion with polarity control
n V1 ~ V10 for adjusting Gamma correction
n Power for analog circuit : 6.5 ~ 10 V
n Output dynamic range : 0.1 ~ AVDD-0.1V
n Power consumption of analog circuit : 3mA
n Power for interface circuit : 2.5~3.6V
n Operating frequency : 65MHz
n Output deviation : 10 ~ 20mV
n Data inversion for reducing EMI
n Cascade function with bi-direction shift control
n CMOS silicon gate ( p-type substrate )
n TCP package
General Description
The NT3966 is a data driver IC for a color TFT LCD panel, SXGA+(1400*1050) applications. For better performance, dot
inversion and a wide range voltage output have been designed into this chip, and for reducing EMI, data inversion control has
been incorporated. This chip supplies 10 sections of voltage-reference for Gamma correction.
Block diagram
OUT1
OUT2
OUT3
OUT420
OUT419
Out Driver Buffer ( 420 channels )
10
V1 ~ V10
6
6
6
6
D10 ~ D15
D20 ~ D25
D30 ~ D35
D40 ~ D45
D50 ~ D55
6
6
6
Decoder
6
6
6
LD
18
6
Decoder
1
64
70-bit Shift Register
Vcc
6
Line Latch ( 420 X 6 bits X 2 )
6
6
6
18
REV2
DIO1
Version 1.0
6
Level Shift
REV1
D00 ~ D05
POL
Digit to Analog Converter
GND
AVDD
AVSS
CLK
1
DIO2
SHL
DEC 7 ,2001
NT3966
TFT LCD Source Driver
NT3966 Pads configuration (Face up): This figure does not specify the TCP package.
Version 1.0
OUT420
OUT419
OUT418
OUT417
OUT416
NT3966
DIO2
D55
D54
D53
D52
D51
D50
D45
D44
D43
D42
D41
D40
D35
D34
D33
D32
D31
D30
Vcc
SHL
V10
V9
V8
V7
V6
AVDD
AVSS
V5
V4
V3
V2
V1
GND
CLK
LD
POL
REV1
REV2
D25
D24
D23
D22
D21
D20
D15
D14
D13
D12
D11
D10
D05
D04
D03
D02
D01
D00
DIO1
OUT5
OUT4
OUT3
OUT2
OUT1
2
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Pin Description
Designation
D05 ~ D00
D15 ~ D10
D25 ~ D20
D35 ~ D30
D45 ~ D40
D55 ~ D50
REV1
I/O
REV2
CLK
V1 ~ V10
I
I
I
OUT1 ~
OUT420
SHL
O
DIO1
DIO2
LD
POL
AVDD
AVSS
Vcc
GND
Version 1.0
I
I
Description
Data input. For six 6-bit data,2 pixels, of color data (R, G, B)
DX5 : MSB; DX0 : LSB
Controls whether the data of D00~D25 are inverted or not.
When “REV1”=1 these data will be inverted. EX. “00” à “ 3F”, “07”à “ 38”, “15”à “2A”, and so on.
Controls whether the data of D30~D55 are inverted or not, same as REV1.
Clock input; latching data onto the line latches at the rising edge.
Gamma correction reference voltage. The voltage of these pins must be AVSS< V10< V9<
V8<V7<V6; V5<V4<V3<V2<V1< AVDD
Output drive signals;
I
Selects left or right shift;
SHL=“1” : DIO1 →OUT1,2,3,4,5,6→OUT7,8,9,10,11,12--→OUT415,416,417,418,419,420= DIO2
SHL=“0” : DIO1=OUT1,2,3,4,5,6←OUT7,8,9,10,11,12←-- OUT415,416,417,418,419,420←DIO2
SHL
DIO1
DIO2
SHIFT
1
Input
Output
Right
0
Output
Input
Left
I/O Start pulse signal input/output
When SHL is applied high (SHL="1"), a start high-pulse on DIO1 is latched at the rising edge of the
CLK. Then the data are latched serially onto internal latches at the rising edge of the CLK. After all
line latches are filled with data, 70 clocks, a pulse is shifted out through the DIO2 pin at the rising
edge of the CLK. This function can cascade two or more devices for dot-size expansion. In normal
applications, the DIO2 signal of the first device is connected to the DIO1 of the second stage, the
DIO2 of the second one is connected to the DIO1 of the third, and so on, in a chain.
In contrast, when SHL is applied low, a start pulse inputs on DIO2, and a pulse outputs through
DIO1.
*Remark: The input pulse-width of DIO1/2 may exceed 1 clock-cycle.
I Latches the polarity of outputs and switches the new data to outputs.
1. At the rising edge, the pin latches the “POL” signal to control the polarity of the outputs.
2. The pin also controls the switch of the line registers that switches the new incoming data
to outputs.
*Remark: The LD may switch the new data to outputs at anytime even if the line data are not
completely full.
I Polarity selector for the dot-inversion control. Available at the rising edge of LD
“POL” value is latched at the rising edge of “LD” to control the polarity of the even or odd outputs.
“POL=1” indicates that even outputs are of positive polarity with a voltage range from V1~V5, and
odd outputs are of negative polarity with a voltage range from V6 to V10. On the other hand, if LD
receives low level “POL”, even outputs are of negative polarity and odd outputs are of positive
polarity.
POL=1: Even outputs range from V1 ~ V5
Odd outputs range from V6 ~ V10
POL=0: Even outputs range from V6 ~ V10
Odd outputs range from V1 ~ V5
I Power supply for analog circuit
I Ground pin for analog circuit
I Power supply for digital circuit
I Ground pin for digital circuit
3
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Power on/off sequence:
This IC is a high-voltage LCD driver, so it may be damaged by a large current flow when an incorrect power sequence is used.
The recommended sequence should be: digital power (Vcc&GND)è logic signals èanalog power (AVDD&AVSS) èGamma
correction reference voltage(V1~V10). Reverse this sequence to shut down, or turn off all signals and power simultaneously.
Relationship between the order of input data and output channels
(1) SHL=”1”, Start pulse from DIO1, shift right
Output
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
Order
First data
Data D05~D00 D15~D10 D25~D20 D35~D30 D45~D40 D55~D50
- ---à
- --
OUT420
Last data
D55~D50
(2) SHL=”0”, Start pulse from DIO2, shift left
Output OUT415 OUT416 OUT417 OUT418 OUT419 OUT420
Order
First data
Data D05~D00 D15~D10 D25~D20 D35~D30 D45~D40 D55~D50
- ---à
- --
OUT6
Last data
D55~D50
Relationship between input data and output voltage
The figure below shows the relationship among the input data and the output voltage and the polarity. The range of V1~V5 is
for positive polarity, and V6 ~ V10 for negative polarity. Please refer to the following page to get the relative resistor value and
voltage calculation method.
Gamma correction diagram
Vout
AVDD
V1
V2
Positive polarity
V3
V4
V5
Vcom
V6
V7
V8
Negative polarity
V9
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
Version 1.0
4
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Gamma correction resistor
V1, V10
8.05K
V2, V9
2.75K
V3, V8
Name
resistor
Name
resistor
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
800
750
700
650
600
550
550
500
500
400
400
350
350
350
300
300
300
250
250
250
200
200
200
150
150
150
150
100
100
100
100
100
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R45
R46
R47
R48
R49
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
150
150
150
200
200
250
250
300
500
800
V3, V8
1.6K
V4, V7
3.45K
V5, V6
Total impedance, Rn=R0 ~ R62, equals 15.85K
Version 1.0
5
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Output Voltage VS Input Data
Data
Output Voltage
( Positive polarity )
00H
V1
01H V2 + ( V1 – V2) X 7250/8050
02H V2 + ( V1 – V2) X 6500/8050
03H V2 + ( V1 – V2) X 5800/8050
04H V2 + ( V1 – V2) X 5150/8050
05H V2 + ( V1 – V2) X 4550/8050
06H V2 + ( V1 – V2) X 4000/8050
07H V2 + ( V1 – V2) X 3450/8050
08H V2 + ( V1 – V2) X 2950/8050
09H V2 + ( V1 – V2) X 2450/8050
0AH V2 + ( V1 – V2) X 2050/8050
0BH V2 + ( V1 – V2) X 1650/8050
0CH V2 + ( V1 – V2) X 1300/8050
V2 + ( V1 – V2) X 950/8050
0DH
V2 + ( V1 – V2) X 600/8050
0EH
V2 + ( V1 – V2) X 300/8050
0FH
V2
10H
V3 + (V2 – V3) X2450/2750
11H
V3 + (V2 – V3) X 2200/2750
12H
V3 + (V2 – V3) X 1950/2750
13H
V3 + (V2 – V3) X 1700/2750
14H
V3 + (V2 – V3) X 1500/2750
15H
V3 + (V2 – V3) X 1300/2750
16H
V3 + (V2 – V3) X 1100/2750
17H
V3 + (V2 – V3) X 950/2750
18H
V3 + (V2 – V3) X 800/2750
19H
V3 + (V2 – V3) X 650/2750
1AH
V3 + (V2 – V3) X 500/2750
1BH
V3 + (V2 – V3) X 400/2750
1CH
V3 + (V2 – V3) X 300/2750
1DH
V3 + (V2 – V3) X 200/2750
1EH
V3 + (V2 – V3) X 100/2750
1FH
V3
20H
V4 + (V3 – V4) X 1500/1600
21H
V4 + (V3 – V4) X 1400/1600
22H
V4 + (V3 – V4) X 1300/1600
23H
V4 + (V3 – V4) X 1200/1600
24H
V4 + (V3 – V4) X 1100/1600
25H
V4 + (V3 – V4) X 1000/1600
26H
V4 + (V3 – V4) X 900/1600
27H
V4 + (V3 – V4) X 800/1600
28H
V4 + (V3 – V4) X 700/1600
29H
V4 + (V3 – V4) X 600/1600
2AH
V4 + (V3 – V4) X 500/1600
2BH
V4 + (V3 – V4) X 400/1600
2CH
V4 + (V3 – V4) X 300/1600
2DH
V4 + (V3 – V4) X 200/1600
2EH
V4 + (V3 – V4) X 100/1600
2FH
Version 1.0
Output Voltage
( Negative polarity )
V10
V10 + ( V9 – V10) X 800/8050
V10 + ( V9 – V10) X 1550/8050
V10 + ( V9 – V10) X 2250/8050
V10 + ( V9 – V10) X 2900/8050
V10 + ( V9 – V10) X 3500/8050
V10 + ( V9 – V10) X 4050/8050
V10 + ( V9 – V10) X 4600/8050
V10 + ( V9 – V10) X 5100/8050
V10 + ( V9 – V10) X 5600/8050
V10 + ( V9 – V10) X 6000/8050
V10 + ( V9 – V10) X 6400/8050
V10 + ( V9 – V10) X 6750/8050
V10 + ( V9 – V10) X 7100/8050
V10 + ( V9 – V10) X 7450/8050
V10 + ( V9 – V10) X 7750/8050
V9
V9 + ( V8 – V9) X 300/2750
V9 + ( V8 – V9) X 550/2750
V9 + ( V8 – V9) X 800/2750
V9 + ( V8 – V9) X 1050/2750
V9 + ( V8 – V9) X 1250/2750
V9 + ( V8 – V9) X 1450/2750
V9 + ( V8 – V9) X 1650/2750
V9 + ( V8 – V9) X 1800/2750
V9 + ( V8 – V9) X 1950/2750
V9 + ( V8 – V9) X 2100/2750
V9 + ( V8 – V9) X 2250/2750
V9 + ( V8 – V9) X 2350/2750
V9 + ( V8 – V9) X 2450/2750
V9 + ( V8 – V9) X 2550/2750
V9 + ( V8 – V9) X 2650/2750
V8
V8 + ( V7 – V8) X 100/1600
V8 + ( V7 – V8) X 200/1600
V8 + ( V7 – V8) X 300/1600
V8 + ( V7 – V8) X 400/1600
V8 + ( V7 – V8) X 500/1600
V8 + ( V7 – V8) X 600/1600
V8 + ( V7 – V8) X 700/1600
V8 + ( V7 – V8) X 800/1600
V8 + ( V7 – V8) X 900/1600
V8 + ( V7 – V8) X 1000/1600
V8 + ( V7 – V8) X 1100/1600
V8 + ( V7 – V8) X 1200/1600
V8 + ( V7 – V8) X 1300/1600
V8 + ( V7 – V8) X 1400/1600
V8 + ( V7 – V8) X 1500/1600
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DEC 7 ,2001
NT3966
TFT LCD Source Driver
Output Voltage VS Input Data (continued)
Data
30H
31H
32H
33H
34H
35H
36H
37H
38H
39H
3AH
3BH
3CH
3DH
3EH
3FH
Version 1.0
Output Voltage
( Positive polarity )
V4
V5 + (V4 – V5) X 3350/3450
V5 + (V4 – V5) X 3250/3450
V5 + (V4 – V5) X 3150/3450
V5 + (V4 – V5) X 3050/3450
V5 + (V4 – V5) X 2950/3450
V5 + (V4 – V5) X 2800/3450
V5 + (V4 – V5) X 2650/3450
V5 + (V4 – V5) X 2500/3450
V5 + (V4 – V5) X 2300/3450
V5 + (V4 – V5) X 2100/3450
V5 + (V4 – V5) X 1850/3450
V5 + (V4 – V5) X 1600/3450
V5 + (V4 – V5) X 1300/3450
V5 + (V4 – V5) X 800/3450
V5
Output Voltage
( Negative polarity )
V7
V7 + ( V6 – V7) X 100/3450
V7 + ( V6 – V7) X 200/3450
V7 + ( V6 – V7) X 300/3450
V7 + ( V6 – V7) X 400/3450
V7 + ( V6 – V7) X 500/3450
V7 + ( V6 – V7) X 650/3450
V7 + ( V6 – V7) X 800/3450
V7 + ( V6 – V7) X 950/3450
V7 + ( V6 – V7) X 1150/3450
V7 + ( V6 – V7) X 1350/3450
V7 + ( V6 – V7) X 1600/3450
V7 + ( V6 – V7) X 1850/3450
V7 + ( V6 – V7) X 2150/3450
V7 + ( V6 – V7) X 2650/3450
V6
7
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Absolute Maximum Ratings*
Logic supply voltage, Vcc
Supply voltage, AVDD
Supply voltage, V1~ V5
Supply voltage, V6 ~ V10
Storage temperature
Operating temperature
*Comments
-0.5V to 5V
-0.5V to +12V
0.4AVDD ~AV DD+0.3
-0.3 ~ 0.6AV DD
-55℃ to 100℃
-10℃ to 75 ℃
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device.
These are stress ratings only. Functional operation of this
device at these or under any other conditions above those
indicated in the operational sections of this specification are
not implied and exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
DC Electrical Characteristics (V cc =3.3V , AV DD=10V, AVSS=GND=0V, TA =-10℃~75℃)
(For the digital circuit)
Parameter
Supply Voltage
Low Level Input Voltage
High Level Input Voltage
High Level Output Voltage
Low Level Output Voltage
Input Leakage Current
Digital Operating Current
Symbol
Vcc
Vil
Vih
Voh
Vol
Ii
Icc
Min.
2.5
0
0.7xVcc
Vcc-0.4
GND
-
Typ.
3
Max.
Unit
3.6
V
0.3xVcc
V
Vcc
V
V
GND+0.4
V
+1
µA
5
mA
Conditions
Digital power
For the digital circuit
For the digital circuit
DIO1, DIO2, Ioh=1mA
DIO1, DIO2, Iol=-1mA
For the digital circuit
Fclk=45 MH z, FLD=50KHz
(For the analog circuit)
Parameter
Supply Voltage
Input level of V1 ~ V5
Input level of V6 ~ V10
Voltage Output Deviation
between Pins
Dynamic Range of Output
Sinking Current of outputs
Driving Current of outputs
Impedance of Gamma
Correction
Analog Operating Current
Version 1.0
Symbol
Min.
AVDD
6.5
Vref
0.4AVDD
Vref
0.1
Vvd
-
Typ.
8.4
+20
Max.
10
AVDD-0.1
0.6AVDD
+25
Unit
V
V
V
mV
Vdr
IOL
IOH
Ri
0.1
-150
150
0.8Rn
+10
-180
200
Rn
+20
AVDD-0.1
1.3Rn
mV
V
µA
µA
ohm
IDD
-
7
10
mA
8
Conditions
For the analog circuit power
Gamma correction voltage
Gamma correction voltage
Vo=0.1V ~ 1.5V & AVDD-1.5 ~ AVDD0.1V
Vo=1.5V ~ AVDD-1.5V
OUT1 ~ OUT420
OUT1 ~ OUT420; Vo=0.1V V.S 1V
OUT1 ~ OUT420; Vo=9.9V V.S 9V
Rn=15850 ohm, from V1 ~ V5 & V6~V10
No load, Fclk=33MHz, FLD=50KHz
DEC 7 ,2001
NT3966
TFT LCD Source Driver
AC1 Electrical Characteristics (Vcc =3.0~3.6V , AV DD=6.5~10V, AVSS=GND=0V, TA = -10~75℃)
Parameter
CLK frequency
CLK period cycle
CLK pulse width
Data set-up time
Data hold time
Propagation delay of DIO2/1
Time that the last data to LD
Pulse width of LD
Time that LD to DIO1/2
POL set-up time
POL hold time
Output stable time
Output loading
Symbol
Fclk
Tcph
Tcw
Tsu
Thd
Tphl
Tld
Twld
Tlds
Tpsu
Tphd
Tst
Min.
15
6
4
2
1
2
2
6
6
-
Typ.
4.5
Max.
65
11
8
Unit
Mhz
ns
ns
ns
ns
ns
Tcph
Tcph
Tcph
ns
ns
us
CL
-
-
150
pF
Conditions
D00 ~ D55, REVx and DIO1/2 to CLK
D00 ~ D55, REVx and DIO1/2 to CLK
CL=25pF ( Output )
POL to LD
POL to LD
96% final value or below with 30mV
precision , CL=75pF, R=5K ohm
For OUT1 ~ OUT420
AC2 Electrical Characteristics (Vcc =2.5~3.0V , AV DD=6.5~10V, AVSS=GND=0V, TA = -10~75℃)
Parameter
CLK frequency
CLK period cycle
CLK pulse width
Data set-up time
Data hold time
Propagation delay of DIO2/1
Time that the last data to LD
Pulse width of LD
Time that LD to DIO1/2
POL set-up time
POL hold time
Output stable time
Output loading
Version 1.0
Symbol
Fclk
Tcph
Tcw
Tsu
Thd
Tphl
Tld
Twld
Tlds
Tpsu
Tphd
Tst
Min.
22
8
6
4
1
2
2
6
6
-
Typ.
4.5
Max.
45
15
8
Unit
Mhz
ns
ns
ns
ns
ns
Tcph
Tcph
Tcph
ns
ns
us
CL
-
-
150
pF
9
Conditions
D00 ~ D55, REVx and DIO1/2 to CLK
D00 ~ D55, REVx and DIO1/2 to CLK
CL=25pF ( Output )
POL to LD
POL to LD
96% final value or below with 30mV
precision , CL=75pF, R=5K ohm
For OUT1 ~ OUT420
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Timing Diagram
Tcph
69
CLK
Tsu
Tcw
Thd
70
Tcw
DIO1/2
( Input )
Tsu
Data,
REVx
Thd
First data
Second data
Last data
Tphl
Tphl
DIO1/2
( Output )
CLK
Last
Tld
LD
Twld
Tlds
DIO1/2
( Input )
LD
Tpsu Tpdh
POL
Positive
96%
Odd outputs
96%
High-Z
High-Z
Even outputs
Output load condition :
Negative
High-Z
Tst
Tst
1K
1K
1K
1K
1K
Output
15P
15P
15P
15P
15P
Vcom
Version 1.0
10
DEC 7 ,2001
NT3966
TFT LCD Source Driver
Function operation
CLK
2CLK ( min.)
DIO1/2
( Input )
1CLK ( min.)
LD
1CLK
Data,
REVx
N-2
N-1
N
1
Last Data
2
3
First Data
LD
POL
Odd Outputs
V1 ~V5
V6 ~V10
Vcom
V1 ~V5
V6 ~V10
Even Outputs
Version 1.0
11
DEC 7 ,2001