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LM215WF4
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 21.5" Full HD TFT LCD
BUYER HP SUPPLIER LG Display Co., Ltd.
MODEL *MODEL LM215WF4
SUFFIX TLG2
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE DATE APPROVED BY DATE
K.G. Park / G.Manager
/
REVIEWED BY
S. Y. KIM / Manager [C]
/ H.D. Joo / Manager [M]
C.S. Shin / Manager [P]
PREPARED BY
/
C. Y. SUNG / Engineer
Please return 1 copy for your confirmation Product Engineering Dept.
With your signature and comments. LG Display Co., Ltd
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LM215WF4
Liquid Crystal Display
Product Specification
Contents
No ITEM Page
COVER 1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS 6
1) ELECTRICAL CHARACTERISTICS 6
2) INTERFACE CONNECTIONS 8
3) LVDS characteristics 11
4) SIGNAL TIMING SPECIFICATIONS 14
5) SIGNAL TIMING WAVEFORMS 15
6) COLOR INPUT DATA REFERNECE 16
7) POWER SEQUENCE 17
8) POWER DIP CONDITION 18
4 OPTICAL SFECIFICATIONS 19
5 MECHANICAL CHARACTERISTICS 25
6 RELIABILITY 28
7 INTERNATIONAL STANDARDS 29
1) SAFETY 29
2) EMC 29
3) ENVIRONMENT 29
8 PACKING 30
1) DESIGNATION OF LOT MARK 30
2) PACKING FORM 30
9 PRECAUTIONS 31
1) MOUNTING PRECAUTIONS 31
2) OPERATING PRECAUTIONS 31
3) ELECTROSTATIC DISCHARGE CONTROL 32
4) PRECAUTIONS FOR STRONG LIGHT EXPOSURE 32
5) STROAGE 32
6) HANDLING PRECAUTIONS FOR PROTECTION FILM 32
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LM215WF4
Liquid Crystal Display
Product Specification
Record of revisions
Revision
Date Page Description
No
Ver. 0.1 JAN. 16. 2012 - Preliminary Specifications.
Ver. 0.2 MAR. 13. 2012 26 Modify the mounting hole depth on right side. (4.0 2.0)
Modify the LED Connector part name.
27
(10019HR-06PIN SM06B-SHJH(HF))
Ver. 1.0 Apr. 2. 2012 6 Add electrical characteristics max value
8 Add LCD connector maker (CN1)
Final specifications
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LM215WF4
Liquid Crystal Display
Product Specification
1. General description
LM215WF4-TLG2 is a Color Active Matrix Liquid Crystal Display with a Light Emitting Diode(LED)
backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a
transmissive type display operating in the normally white mode. It has a 21.5 inch diagonally
measured active display area with Full HD resolution (1080 vertical by 1920 horizontal pixel array)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical
stripes. Gray scale or the brightness of the sub-pixel color is determined with
a 8-bit gray scale signal for each dot, thus, presenting a palette of more than 16,7M colors with
Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method that
enables low power, high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low
Voltage Differential Signaling) chip. It is intended to support applications where thin thickness,
wide viewing angle, low power are critical factors and graphic displays are important. In
combination with the vertical arrangement of the sub-pixels, the LM215WF4-TLG2 characteristics
provide an excellent flat panel display for office automation products such as monitors.
RGB
FIG. 1 Block diagram
Source driver circuit
S1 S1920
LVDS G1
pair #1
Timing
LVDS
controller
pair #2 TFT-LCD Panel
(1920 RGB 1080 pixels)
CN1
G1080
+5V Power circuit
VLCD block
VLED 2ch B/L System (White LED)
General features
Active screen size 21.50 inches (546.1mm) diagonal
Outline Dimension 495.6(H) x 292.2(V) x 10.2(D) mm(Typ.)
Pixel Pitch 0.08265*RGB(H)mm x 0.24795(V)mm
Pixel Format 1920 horizontal By 1080 vertical Pixels. RGB stripe arrangement
Interface LVDS 2Port
Color depth 16.7M colors
Luminance, white 250 cd/m2 ( Center 1Point, typ)
Viewing Angle (CR>10) R/L 170(Typ.), U/D 160(Typ.)
Power Consumption Total 15.2 W(Typ.)
Weight 1,720 (Typ.)
Display operating mode Transmissive mode, normally White
Surface treatments Hard coating (3H), Anti-glare treatment of the front polarizer
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LM215WF4
Liquid Crystal Display
Product Specification
2. Absolute maximum ratings
The following are maximum values which, if exceeded,
may cause faulty operation or damage to the unit.
Table 1. Absolute maximum ratings
Values
Parameter Symbol Units Notes
Min Max
Power Supply Input Voltage VLCD -0.3 +6.0 Vdc At 25
Operating Temperature TOP 0 50 C
Storage Temperature TST -20 60 C
1,2,3
Operating Ambient Humidity HOP 10 90 %RH
Storage Humidity HST 10 90 %RH
LCM Surface Temperature
TSurface 0 65 1, 4
(Operation)
Note : 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be 39 C Max, and no condensation of water.
2. Maximum Storage Humidity is up to 40 , 90% RH only for 4 corner light leakage Mura.
3. Storage condition is guaranteed under packing condition.
4. LCM Surface Temperature should be Min. 0 and Max. 65 under the VLCD=5.0V,
fV=60Hz, 25 ambient Temp. no humidity control and LED string current is typical value.
FIG. 2 Temperature and relative humidity
90%
60
60%
50 Storage
Wet Bulb
Temperature [ ]
Humidity
[(%)RH]
40
40%
Operation
30
20
10
0
10%
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [ ]
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LM215WF4
Liquid Crystal Display
Product Specification
3. Electrical specifications
3-1. Electrical characteristics
It requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input power for the LED Backlight, is typically
generated by an LED Driver. The LED driver is an external unit to the LCDs.
Table 2. Electrical characteristics
Values
Parameter Symbol Unit Notes
Min Typ Max
MODULE :
Power Supply Input Voltage VLCD 4.5 5.0 5.5 Vdc
Permissive Power Input Ripple VLCD - - 400 mVp-p 3
ILCD-MOSAIC 907 1134 mA 1
Power Supply Input Current ILCD-BLACK 1035 1294 mA 2
ILCD-L80 836 1045 mA 2
Power Consumption PLCD 4.53 5.67 Watt 1
Inrush current IRUSH - 3.5 A 4
Note :
1. The specified current and power consumption are
under the VLCD=5.0V, 25 r 2 C,fV=60Hz condition
whereas mosaic pattern(8 x 6) is displayed and fV is the frame frequency.
2. The current is specified at the maximum current pattern and L80.
3. Permissive power ripple should be measured under VCC=5.0V, 25 C, fV (frame frequency)=75Hz
condition and At that time, we recommend the bandwidth configuration of oscilloscope
is to be under 20MHz.
4. The duration of rush current is about 5ms and rising time of power Input is 500us r 20%.
FIG.3 pattern for Electrical characteristics
power consumption power input ripple Energy star 5.0
White : 255Gray White : 255Gray (64%)
Black : 0Gray Black : 0Gray (36%)
Mosaic Pattern(8 x 6) Full Black Pattern L80 Pattern
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LM215WF4
Liquid Crystal Display
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol Unit Notes
Min. Typ. Max.
LED String Current Is - 120 125mA mA 1,2,5
LED String Voltage Vs 41.3 44.1 46.9 V 1,5
Power Consumption PBar - 10.6 11.3 Watt 1,2,4
LED Life Time LED_LT 30,000 - - Hrs 3
Notes) The LED Bar consists of 28 LED packages, 2 strings (parallel) x 14 packages (serial)
LED driver design guide
: The design of the LED driver must have specifications for the LED in LCD Assembly.
The performance of the LED in LCM, for example life time or brightness, is extremely
influenced by the characteristics of the LED driver.
So all the parameters of an LED driver should be carefully designed and output current
should be Constant current control.
Please control feedback current of each string individually to compensate
the current variation among the strings of LEDs.
When you design or order the LED driver, please make sure unwanted lighting caused by
the mismatch of the LED and the LED driver (no lighting, flicker, etc) never occurs.
When you confirm it, the LCD module should be operated in the same condition
as installed in your instrument.
1. Specified values are for a single LED bar.
2. The specified current is defined as the input current for a single LED string with 100% duty cycle.
3. The LED life time is defined as the time when brightness of LED packages become 50% or less
than the initial value under the conditions at Ta = 25 2 C and LED string current is typical value.
4. The power consumption shown above does not include loss of external driver.
The typical power consumption is calculated as PBar = Vs(Typ.) x Is(Typ.) x No. of strings.
The maximum power consumption is calculated as PBar = Vs(Max.) x Is(Typ.) x No. of strings.
5. LED operating conditions are must not exceed Max. ratings.
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LM215WF4
Liquid Crystal Display
Product Specification
3-2. Interface connections
3-2-1. LCD Module
LCD connector(CN1) : GT103-30S-HF15-E2500 (LSM) , IS100-L30O-C23 (UJU)
Mating connector : FI-X30H and FI-X30HL (JAE) or Equivalent
Table 4. Module connector(CN1) pin configuration
Pin No Symbol Description
1 RXO0- Minus signal of 1st channel 0 (LVDS)
2 RXO0+ Plus signal of 1st channel 0 (LVDS)
3 RXO1- Minus signal of 1st channel 1 (LVDS)
4 RXO1+ Plus signal of 1st channel 1 (LVDS)
5 RXO2- Minus signal of 1st channel 2 (LVDS)
6 RXO2+ Plus signal of 1st channel 2 (LVDS)
7 GND Ground (AGP)
8 RXOC- Minus signal of 1st clock channel (LVDS)
9 RXOC+ Plus signal of 1st clock channel (LVDS)
10 RXO3- Minus signal of 1st channel 3 (LVDS)
11 RXO3+ Plus signal of 1st channel 3 (LVDS)
12 RXE0- Minus signal of 2nd channel 0 (LVDS)
13 RXE0+ Plus signal of 2nd channel 0 (LVDS)
14 GND Ground
15 RXE1- Minus signal of 2nd channel 1 (LVDS)
16 RXE1+ Plus signal of 2nd channel 1 (LVDS)
17 GND Ground
18 RXE2- Minus signal of 2nd channel 2 (LVDS)
19 RXE2+ Plus signal of 2nd channel 2 (LVDS)
20 RXEC- Minus signal of 2nd clock channel (LVDS)
21 RXEC+ Plus signal of 2nd clock channel (LVDS)
22 RXE3- Minus signal of 2nd channel 3 (LVDS)
23 RXE3+ Plus signal of 2nd channel 3 (LVDS)
24 GND Ground
25 NC No Connection (For LCD internal use only.)
26 NC No Connection (For LCD internal use only.)
27 PWM_OUT Reference signal for LED Driver control
28 VLCD Power Supply (5.0V)
29 VLCD Power Supply (5.0V)
30 VLCD Power Supply (5.0V)
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LM215WF4
Liquid Crystal Display
Product Specification
FIG. 4 Connector diagram
GT103-30S-HF15-E2500 (LSM)
#
#30
#11 #30
1'st signal pairs
2'nd signal pairs
Power(+5V)
PWM_OUT
Rear view of LCM
Note:
1. NC: No Connection.
2. All GND(ground) pins should be connected together and to Vss which should also
be connected to the LCD's metal frame.
3. All VLCD (power input) pins should be connected together.
4. Input Level of LVDS signal is based on the IEA 664 Standard.
5. PWM_OUT is a reference signal for LED Driver control.
This PWM signal is synchronized with vertical frequency.
Its frequency is 6 times of vertical frequency, and its duty ratio is 50%.
If the system don't use this pin, do not connect.
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LM215WF4
Liquid Crystal Display
Product Specification
3-2-2. BACKLIGHT CONNECTOR PIN CONFIGURATION(CN2)
The LED interface connector is a model SM06B-SHJH(HF) manufactured by JST.
The mating connector is a SHJP-06V-S(HF) or SHJP-06-A-K(HF) and Equivalent.
The pin configuration for the connector is shown in the table below.
Pin Symbol Description
1 FB1 Channel1 Current Feedback
2 NC NC
3 VLED LED Power Supply
4 VLED LED Power Supply
5 NC NC
6 FB2 Channel2 Current Feedback
#1
Rear view of LCM
#6
[ Figure 5 ] Backlight connector view
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LM215WF4
Liquid Crystal Display
Product Specification
3-3. LVDS characteristics
3-3-1. DC Specification
LVDS -
|VID|
LVDS +
VCM VIN_MAX VIN_MIN
# |VID| = |(LVDS+) (LVDS-)|
# VCM = {(LVDS+) + (LVDS-)}/2
0V
Description Sym. Min Max Unit Notes
LVDS Differential Voltage |VID| 200 600 mV -
LVDS Common mode Voltage VCM 0.6 1.5 V -
LVDS Input Voltage Range VIN 0.3 1.8 V -
3-3-2. AC Specification
Tclk
LVDS Clock
LVDS Data
t SKEW (Fclk = 1/T clk )
1) 85 MHz > Fclk 65 MHz : - 400 ~ +400
t SKEW 2) 65 MHz > Fclk 25 MHz : - 600 ~ +600
< Clock skew margin between channel >
t SKEW EO
_
LVDS Odd Clock
T clk
LVDS Even Clock
T clk
LVDS Even Data
< Clock skew margin between clock (Even/Odd) >
Description Sym. Min Max Unit Notes
tSKEW - 300 + 300 ps 90MHz > Fclk 85MHz
LVDS Clock to Data Skew
tSKEW - 400 + 400 ps 85MHz > Fclk 65MHz
Margin
tSKEW - 600 + 600 ps 65MHz > Fclk 30MHz
LVDS Clock to Clock Skew
tSKEW_EO - 1/7 + 1/7 Tclk -
Margin (Even to Odd)
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LM215WF4
Liquid Crystal Display
Product Specification
3-3-3. LVDS Data format
Tclk
Tclk* 4/7 Tclk* 3/7
RCLK +
Tclk* 1/7 MSB R7
R6
-
RXinO0+/ OR3 OR2 OR1 OR0 OG0 OR5 OR4 OR3 OR2 OR1 OR0 OG0 OR5 OR4
R5
RXinO1+/
- OG4 OG3 OG2 OG1 OB1 OB0 OG5 OG4 OG3 OG2 OG1 OB1 OB0 OG5 R4
R3
-
RXinO2+/ OB5 OB4 OB3 OB2 DE VSYNC HSYNC OB5 OB4 OB3 OB2 DE VSYNC HSYNC
R2
RXinO3+/
- OG7 OG6 OR7 OR6 X OB7 OB6 OG7 OG6 OR7 OR6 X OB7 OB6 R1
LSB R0
-
RXinE0+/ ER3 ER2 ER1 ER0 EG0 ER5 ER4 ER3 ER2 ER1 ER0 EG0 ER5 ER4
* ODD = 1 Pixel
st
EG4 EG3 EG2 EG1 EB1 EB0 EG5 EG4 EG3 EG2 EG1 EB1 EB0 EG5 nd
EVEN = 2 Pixel
RXinE1+/
-
-
RXinE2+/ EB5 EB4 EB3 EB2 DE VSYNC HSYNC EB5 EB4 EB3 EB2 DE VSYNC HSYNC
RXinE3+/
- EG7 EG6 ER7 ER6 X EB7 EB6 EG7 EG6 ER7 ER6 X EB7 EB6
Previous (N-
1)th Cycle Current(Nth) Cycle Next(N+1)th Cycle
< LVDS Data Format >
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LM215WF4
Liquid Crystal Display
Product Specification
Table 6. Required signal assignment for Flat Link(NS:DS90CF383) transmitter
Pin # Pin Name Require Signal Pin # Pin Name Require Signal
1 VCC Power Supply for TTL Input 29 GND Ground pin for TTL
2 D5 TTL Input (R7) 30 D26 TTL Input (DE)
3 D6 TTL Input (R5) 31 TX CLKIN TTL Level clock Input
4 D7 TTL Input (G0) 32 PWR DWN Power Down Input
5 GND Ground pin for TTL 33 PLL GND Ground pin for PLL
6 D8 TTL Input (G1) 34 PLL VCC Power Supply for PLL
7 D9 TTL Input (G2) 35 PLL GND Ground pin for PLL
8 D10 TTL Input (G6) 36 LVDS GND Ground pin for LVDS
9 VCC Power Supply for TTL Input 37 TxOUT3 Positive LVDS differential data output 3
10 D11 TTL Input (G7) 38 TxOUT3 Negative LVDS differential data output 3
11 D12 TTL Input (G3) 39 TX CLKOUT Positive LVDS differential clock output
12 D13 TTL Input (G4) 40 TX CLKOUT Negative LVDS differential clock output
13 GND Ground pin for TTL 41 TX OUT2 Positive LVDS differential data output 2
14 D14 TTL Input (G5) 42 TX OUT2 Negative LVDS differential data output 2
15 D15 TTL Input (B0) 43 LVDS GND Ground pin for LVDS
16 D16 TTL Input (B6) 44 LVDS VCC Power Supply for LVDS
17 VCC Power Supply for TTL Input 45 TX OUT1 Positive LVDS differential data output 1
18 D17 TTL Input (B7) 46 TX OUT1 Negative LVDS differential data output 1
19 D18 TTL Input (B1) 47 TX OUT0 Positive LVDS differential data output 0
20 D19 TTL Input (B2) 48 TX OUT0 Negative LVDS differential data output 0
21 GND Ground pin for TTL Input 49 LVDS GND Ground pin for LVDS
22 D20 TTL Input (B3) 50 D27 TTL Input (R6)
23 D21 TTL Input (B4) 51 D0 TTL Input (R0)
24 D22 TTL Input (B5) 52 D1 TTL Input (R1)
25 D23 TTL Input (RSVD) 53 GND Ground pin for TTL
26 VCC Power Supply for TTL Input 54 D2 TTL Input (R2)
27 D24 TTL Input (HSYNC) 55 D3 TTL Input (R3)
28 D25 TTL Input (VSYNC) 56 D4 TTL Input (R4)
Notes : Refer to LVDS Transmitter Data Sheet for detail descriptions.
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LM215WF4
Liquid Crystal Display
Product Specification
3-4. Signal timing specifications
This is the signal timing required at the input of the User connector. All of the interface signal
timing should be satisfied with the following specifications for it's proper operation.
Table 7. Timing table
Parameter Symbol Min. Typ. Max. Unit Notes
Period tCLK 11.11 13.89 16.7 ns Pixel frequency
DCLK : Typ.144MHz
Frequency fCLK 60 72 90 MHz
Horizontal Valid tHV 960 960 960
Horizontal tCLK
H Period Total tHP 1024 1088 1120
Hsync Frequency fH 64 66 83 kHz
Vertical Valid tVV 1080 1080 1080
tHP
Vertical V Period Total tVP 1090 1100 1160
Vsync Frequency fV 50 60 75 Hz
Note:
1. DE Only mode operation. The input of Hsync & Vsync signal does not
have an effect on LCD normal operation.
2. The performance of the electro-optical characteristics may be influenced by variance of the
vertical refresh rates.
3. Horizontal period should be even.
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Liquid Crystal Display
Product Specification
3-5. Signal timing waveforms
1. DCLK , DE, DATA waveforms
tCLK
Dclk
tSD tHD Valid
Invalid Invalid
Data
tSI tHI
DE(Data Enable)
2. Horizontal waveform
tHP
tHV
DE(Data Enable) DE
3. Vertical waveform
tVP
tVV
DE(Data Enable) DE
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Liquid Crystal Display
Product Specification
3-6. Color input data reference
The brightness of each primary color (red,green and blue) is based on the 8bit gray scale data
input for the color, the higher the binary input, the brighter the color. The table below
provides a reference for color versus data input.
Table 8. Color data reference
Input Color Data
Red Green Blue
Color
MSB LSB MSB LSB MSB LSB
R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0
Black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red (255) 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Green (255) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
Basic Blue (255) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Color Cyan 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Magenta 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Yellow 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
White 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Red(000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red(001) 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red(002) 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
--------- - - - - - - - - - - - - - - - - - - - - - - - -
Red --------- - - - - - - - - - - - - - - - - - - - - - - - -
Red(253) 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red(254) 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red(255) Bright 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Green(000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Green(001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
Green(002) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
--------- - - - - - - - - - - - - - - - - - - - - - - - -
Green - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - -
Green(253) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0
Green(254) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0
Green(255)Bright 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
Blue(000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Blue(001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
Blue(002) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
--------- - - - - - - - - - - - - - - - - - - - - - - - -
Blue - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - -
Blue(253) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 1
Blue(254) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0
Blue(255) Bright 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
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LM215WF4
Liquid Crystal Display
Product Specification
3-7. Power sequence
90% 90%
VLCD 10% 10%
Power Supply For LCD
T1 T2 T5 T7
Valid data
Interface Signal (Tx)
0V
T3 T4
LED on
Power for LAMP OFF OFF
Table 9. Power sequence
Values
Parameter Units
Min Typ Max
T1 0.5 - 10 ms
T2 0.01 - 50 ms
T3 500 - - ms
T4 200 - - ms
T5 0.01 - 50 ms
T7 1000 - - ms
Notes :
1. Please avoid floating state of interface signal at invalid period.
2. When the interface signal is invalid, be sure to pull down the power supply for
LCD VLCD to 0V.
3. LED power must be turn on after power supply for LCD an interface signal are valid.
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Product Specification
3-8. VLCD Power dip condition
FIG. 6 Power dip condition
VLCD
4.5V
3.5V
GND(ground)
td
1) Dip condition
3.5V VLCD 4.5V , td20ms
2) VLCD 3.5V
VLCD-dip conditions should also follow the Power On/Off conditions for supply voltage.
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LM215WF4
Liquid Crystal Display
Product Specification
4. Optical specification
Optical characteristics are determined after the unit has been `ON' for 30 minutes in a dark
environment at 25 C.
Table 10. Optical characteristics Ta= 25 C, VLCD=5.0V, fV=60Hz fCLK=72.0MHz, Is=120mA
Values
Parameter Symbol Units Notes
Min Typ Max
1
Contrast Ratio CR 700 1000 -
(PR-880)
2
Surface Luminance, white LWH 200 250 - cd/m2
(PR-880)
2
Surface Luminance, Black LBL - - 0.6 cd/m2
(PR-880)
3
Luminance Variation G WHITE 9P 75 - - %
(PR-880)
Rise Time TrR - 1.3 2.6 ms 4
Response Time
Decay Time TrD - 3.7 7.4 ms (RD-80S)
Color Gamut 67.5 72 - % (PR-650)
Rx 0.637
RED
Ry 0.330
Gx 0.310
GREEN
Color Coordinates Gy Typ 0.620 Typ
(PR-650)
[CIE1931] Bx -0.03 0.153 +0.03
BLUE
By 0.067
Wx 0.313
WHITE
Wy 0.329
Viewing Angle (CR>5)
x axis, right(I=0 ) Tr 75 88 Degree
x axis, left (I=180 ) Tl 75 88
y axis, up (I=90 ) Tu 70 85
y axis, down (I=270 ) Td 70 85 5
Viewing Angle (CR>10) (PR-880)
x axis, right(I=0 ) Tr 70 85 Degree
x axis, left (I=180 ) Tl 70 85
y axis, up (I=90 ) Tu 65 75
y axis, down (I=270 ) Td 75 85
6
Crosstalk 1.5 %
(PR-880)
Luminance uniformity - 7
Angular dependence LR - - 1.73
(TCO 5.0) (PR-880)
8
Color grayscale linearity u'v' 0.018
(PR-650)
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LM215WF4
Liquid Crystal Display
Product Specification
The values specified are at an approximate distance 50cm from the LCD surface at a viewing
angle of ) and T equal to 0 .
FIG. 7 presents additional information concerning the measurement equipment and method.
FIG. 7 Optical characteristic measurement equipment and method
LCD Module
Optical
Stage(x,y) Pritchard 880
or equivalent
50cm
Notes :
1. Contrast ratio(CR) is defined mathematically as :It is measured at center point(1)
Surface luminance with all white pixels
Contrast ratio = ---------------------------------------------------------
Surface luminance with all black pixels
2. Surface luminance is the luminance value at center 1 point(1) across
the LCD surface 50cm from the surface with all pixels displaying white.
For more information see FIG 8.
3. The variation in surface luminance , G WHITE is defined as
Minimum (P1,P2 .....P9)
G WHITE = --------------------------------------------- *100
Maximum (P1,P2 .....P9)
For more information see Figure 8.
FIG. 8 Luminance measuring point
H H
H/2 H/10 H/2
2 3 4 V/2
V/2
V
V 5 6
1
V/10 7 8 9
Active Area H : 476.064 mm
V : 267.786 mm
@ H,V : Active Area
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Liquid Crystal Display
Product Specification
Notes :
4. Response time is the time required for the display to transition from black to white
(Decay Time, TrD) and from white to black (Rise Time, TrR)
The sampling rate is 500K sample/sec. For additional information see FIG. 9.
The response time is defined as the following figure and shall be measured by
switching the input signal for each gray to gray.
FIG. 9 Response time (measurement equipment : RD-80S)
TrR TrD
100
90
Optical
white black white
response
[%] 10
0
5. Viewing angle is the angle at which the contrast ratio is greater than 10 or 5. The angles are
determined for the horizontal or x axis and the vertical or y axis with respect to the z axis
which is normal to the LCD surface. For more information see FIG. 10 .
FIG. 10 Viewing angle
Normal
E Y
I = 90q, Up
I = 180q, Left
T
I
I = 0q, Right
I = 270q, Down
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Liquid Crystal Display
Product Specification
Notes :
6. Crosstalk is defined as
The equation of crosstalk : (~LA[or C]2-LA[or C]1~/LA[or C]1) u100(%) [Vertical],
(~LB[or D]2-LB[or D]1~/LB[or D]1) u100(%) [Horizontal]
For more information see Figure 11.
FIG. 11 Crosstalk measuring point
Pattern 2
Pattern 1
(Background: gray 127, Rectangular: gray 0, gray255 )
(Half gray: gray 127)
A/2 A/8 A/4 A/2 A/4
B/8
LA1 LA2 B/4
B B/2
LB1 LD1 LB2 LD2
B/2