Liquid Crystal Display Application Note Version E
Page1
INNO L U X DISPLAY CORPORATION
LCD MODULE
APPLICATION NOTE
Customer: ALL LCD SIZE: 7.0D Date: 2010/1/27 Version:
E
Remark
■Without PCB
Approved by
Reviewed by
Prepared by
Hans Chen
2010-01-27
Peter Wang
2010-01-27
Bruce Liu
2010-01-27
Innolux Display Corporation
Industry District 10, LongHua, Shen, Zh
T.L +86-0755-********
https://www.sodocs.net/doc/3d11459978.html,
Liquid Crystal Display Application Note
Version E
Page2
Record of Revision
Version Revise Date Page Content
A
B
C
D
E
2009/3/01
2009/7/10
2009/8/10
2009/9/02
2010/1/27
Initial Release
Modify Recommend LED Driver
Add Model
Modify DC-DC Reference Circuit and add Bom List
Update LED driver IC vendor information
1. Module Introduction
1.1 Module Photo
Module photo
Model
Top side Bottom side
AT070TN92
AT070TN93
AT070TN94
AT070TN93 V.2
1.2 Module Comparison Table
Module name Brightness(nits) Pin Num. Recommended connector AT070TN92 250(without TP) 50 pin FH12A-50S-0.5SH AT070TN93 320(with TP) 50pin FH12A-50S-0.5SH AT070TN94 400(without TP) 50 pin FH12A-50S-0.5SH
2. Pin Assignment Table
AT070TN92 &AT070TN94
Pin No.
Symbol
Pin No. Symbol I/O Function Remark
1 V LED+P Power for LED backlight (Anode)
2 V LED+P Power for LED backlight (Anode)
3 V LED-P Power for LED backlight (Cathode)
4 V LED-P Power for LED backlight (Cathode)
5 GND P Power ground
6 V COM I Common voltage
7 DV DD P Power for Digital Circuit
8 MODE I DE/SYNC mode select Note 1
9 DE I Data Input Enable
10 VS I Vertical Sync Input
11 HS I Horizontal Sync Input
12 B7 I Blue data(MSB)
13 B6 I Blue data
14 B5 I Blue data
15 B4 I Blue data
16 B3 I Blue data
17 B2 I Blue data
18 B1 I Blue data Note 2
19 B0 I Blue data(LSB) Note 2
20 G7 I Green data(MSB)
21 G6 I Green data
22 G5 I Green data
23 G4 I Green data
24 G3 I Green data
25 G2 I Green data
26 G1 I Green data Note 2
27 G0 I Green data(LSB) Note 2
28 R7 I Red data(MSB)
29 R6 I Red data
30 R5 I Red data
31 R4 I Red data
32 R3 I Red data
33 R2 I Red data
34 R1 I Red data Note 2
35 R0 I Red data(LSB) Note 2
36 GND P Power Ground
37 DCLK I Sample clock Note 3
38 GND P Power Ground
39 L/R I Left / right selection Note 4
40 U/D I Up/down selection Note 4
41 V GH P Gate ON Voltage
42 V GL P Gate OFF Voltage
43 AV DD P Power for Analog Circuit
44 RESET I Global reset pin. Noet5
45 NC - No connection
46 V COM I Common Voltage
47 DITHB I Dithering function Noet6
48 GND P Power Ground
49 NC - No connection
50 NC - No connection
I: input, O: output, P: Power
Note 1: DE/SYNC mode select. Normally pull high.
When select DE mode, MODE=”1”, VS and HS must pull high.
When select SYNC mode, MODE=”0”, DE must be grounded.
Note 2: When input 18 bits RGB data, the two low bits of R,G and B data must be grounded Note 3: Data shall be latched at the falling edge of DCLK.
Note 4: Selection of scanning mode
Setting of scan control input
Scanning direction
U/D L/R
GND DV DD Up to down, left to right
DV DD GND Down to up, right to left
GND GND Up to down, right to left
DV DD DV DD Down to up, left to right
Note 5: Global reset pin. Active low to enter reset state. Suggest to connect with an RC reset circuit for stability. Normally pull high
Note 6: Dithering function enable control, normally pull high.
When RGB is 6 bit DITHB=”1”,Disable internal dithering function,
When RGB is 8 bit DITHB=”0”,Enable internal dithering function,
3. Power &Timing Characteristic
3.1. Power Sequence
Customer should follow our product power sequence, other it would lead to display abnormal, please refer to the figures as below.
3.1.1AT070TN92 & AT070TN94
Power On:
Power Off :
Note 1: Be sure to apply DV DD and V GL to the LCD first, and then apply V GH.
Note 2: DV DD setting should match the signals output voltage (refer to Note 3) of customer’s system board.
Note 3: DCLK,HS,VS,RESET,U/D, L/R,DE,R0~R7,G0~G7,B0~B7,MODE,DITHB.
3.3 Timing Description
Input signals must follow our timing specification, Otherwise the LCM will display abnor mally.
About the detail timing parameters of LCD display, please follow the product specification.
3.3.1AC Electrical Characteristics
Values
Item Symbol
Min. Typ. Max.
Unit Remark
HS setup time Thst8 - - ns
HS hold time Thhd 8 - - ns
VS setup time Tvst8 - - ns
VS hold time Tvhd8 - - ns
Data setup time Tdsu8 - - ns
Data hole time Tdhd8 - - ns
DE setup time Tesu 8 - - ns
DE hole time Tehd8 - - ns
DV DD Power On Slew rate TPOR - - 20 ms From 0 to 90% DV DD
RESET pulse width TRst 1 - - ms DCLK cycle time Tcoh 20 - - ns DCLK pulse duty Tcwh 40 50 60 %
Timing Formula:
DCLK = (Hw + Hbp + Ha +Hfp)*( Vw + Vbp + Va +Vfp)*Fvsync (Unit : Hz) Fhsync = (Vw+ Vbp + Va +Vfp)*Fvsync (Unit : Hz)
Remark:
1. Fhsync is Hsync frequency, and Fvsync is Vsync frequency.
2. Parameter Table.
Parameter Description Unit Hw Hsync Width DCLK
Hbp Horizontal back porch DCLK
Ha Horizontal valid area DCLK
Hfp Horizontal front porch DCLK
Vw Vsync Width Hsync(Line)
Vbp Vertical back porch Hsync(Line)
Va Vertical valid area Hsync(Line)
Vfp Vertical front porch Hsync(Line)
DCLK Dot clock Hz
3.3.2Timing Chart
4. Software Introduction
NA
5. Reference Circuit
5.1 Interface reference circuit
GND R6RN1
22?1
2345678
GND R6AVDD
B4
GND B06G01B3G4
G06B0R06R02G0GND G1R7R0VGH
connector
123456789101112131415161718192021222324252627282930313233343536373839404142434445
464748
4950
VLED VLED GLED GLED GND VCOM VCC MODE DE VS HS B7B6B5B4B3B2B1B0G7G6G5G4G3G2G1G0R7R6R5R4R3R2R1R0GND DCLK GND L/R U/D VGH VGL AVDD RESET NC VCOM DITHB GND NC NC B5B3GND
G2R2VLED GLED B4G5DE B2R5R1G05G2B02R5R04
R2R1RN5
22?12345678
B6B00
G02G3GND
GLED R3DITHB G07C2?VCOM B6R07G6R4G6B1RN3
22?12345678
R3R03U/D
B0
VGH
B7RN6
22?1
2345678
VLED R00
G3MODE B7G1VS G7G00
R05RN4
22?1
2345678
G4B1B03DCLK R4R01B05B04
C1?
L/R
VCOM HS RESET
B07VCC RN2
22?12345678
G03B5B01G04
G0
G5G7R0
CLK L1
Bead 1
2
R7B2
5.2 Vcom Reference Circuit
R366.8K?
R3118K?
12
AVDDF
A V D D F
C28VCOM
VR1VR103G
R34000
C2710uF
5.3 Backlight Driver Reference Circuit
5.4 DC/DC Reference Circuit
VGH
4.7K
U101
FP6791
1
2
3
4
5678
C
C
F
B
C
S
P
V
I
N
E
X
T
V
S
S
R
O
S
C
R
D
u
t
y
10.4V
1
R133
330
1
A
V
D
D
C108
@105
C152@474
C115
@474
DM102
DAN217U
1
2
3
1
2
3
C154
@105
Rv d2
36Kohm
Rgl3
10Kohm
R123
000
C135
@105
L101
AHPD12H4R7MT
12
Q103
3904
R120
200K
3904
VGL=-7V--->
Rgl1=1K
Rgl2=430ohm
Rgl3=10K
R126
204
Q105
3906
C111
10uF
AVDDF
D103
UDZ5.6B
1
2
C110
1uF
AVDD=10.4V --->
Rvd1=39.2K
Rvd2=36k
Rvd3=2K
DAN217U
1
2
3
1
2
3
C122
10uF
Rgl2
430ohm
Rgl1
1Kohm
VGH=16V --->
Rgh1=5.1K
Rgh2=2.94K
Rgh3=5.1K
C112
@105
C106@4742
C128
@104
C114
10uF
Rgh3
5.1Kohm
D101
UDZ5.6B
1
2
C133OPEN
Rgh1
5.1Kohm
C125
@106
R125
204
1
Rgh2
2.94Kohm
C153
@105
3
3
Q106
3906
R157
102
3
C151
@105
R107
102
(0-VGL) / (Rgl1+Rgl2+Rgl3)=(0-Vref) / Rgl3
Vref=-6.3V=-5.6+(-0.7)
VGL=(Rgl1+Rgl2+Rgl3)*Vref / Rgl3
C113
@105
3
AVDD=(Rvd1//Rvd2+Rvd3)*Vref / Rvd3
Vref = 1V for FP6791
R106
103
1
R158
103
C119
OPEN
AVDD
VCC33
C121
@104
R172open
D102
SB07-03C
12
2
-7.0V
R109
474
G
N
D
DM103
DAN217U
1
2
3
1
2
3
VGH / (Rgh1+Rgh2+Rgh3) = Vref/Rgh3
VGH=(Rgh1+Rgh2+Rgh3)*Vref/Rgh3
Vref=5.6+0.7=6.3V
SW
16.0V
Rv d1
39.2Kohm
2
R121
698ohm
C131
82nF
G
N
D
2
Q104
FDN335N
3
1
2
DM104
DAN217U
1
2
3
1
2
3
Rv d3
2Kohm
Item Quantity Reference Description
1 1 U101 PWM IC FP6791,8 PIN TSSOP, Fitipower
2 4
DM101,DM102,
DM103,DM104
Diode module DAN217U, Rohm
3 2 Q102,Q103 TRANSISTOR(NPN) ,MMST3904,SC-59,Rohm
4 2 Q105,Q106 TRANSISTOR(PNP) ,MMST3906,SC-59,ROHM
5 1 Q104 MOSFET N-channel,FDN335N,SOT-23,Fairchild
6 2 D101,D103 Zener Diode,UDZ5.6B,SOD-323.Rohm
7 1 D102 SCHOTTKY BARRIER DIODE.SB07-03C, Sanyo 5.5 Vendor Recommend
Item Vendor Type Remark
DC/DC Fiti Power FP6791
LED Driver Fiti Power FP6745 1.PWM Frequency:100Hz~50KHz
2.Or other IC with the same function
6.Suggestions for housing design.
7. Demo Board Introduce
7.1 Interface of Demo Board
Connector I/O Function
1 O 5.6”D connector
2 I The hand-off controller of CVBS and D-Sub
3 P 12V DC input
4 I DVI signal input
5 I VGA signal input
6 I S-video
7 I CVBS
7.2 Interface of Remote Control
Power On/Off
Change Signal
OSD Menu
7.3 Linking LCM
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