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Product Information
ISSUE DATE : 98-12-23 MODEL : LT150X1-151
NOTE : This product information is subject to change after 3 months of issuing date. PREPARED BY : AMLCD Application Engineering Group
SAMSUNG ELECTRONICS CO., LTD.
Doc. No : PI004 1
SAMSUNG TFT-LCD
CONTENTS
General Description 1. Electrical Absolute Characteristics 1.1 TFT LCD Module 1.2 Back-light Unit 2. Optical Characteristics 3. Electrical Characteristics 3.1 TFT LCD Module 3.2 Back-light Unit 4. Block Diagram 4.1 TFT LCD Module 4.2 Back-light Unit -------------------( 3 ) -------------------( 4 )
-------------------( 5 ) -------------------( 8 )
- - - - - - - - - - - - - - - - - - - ( 11 )
- - - - - - - - - - - - - - - - - - - ( 12 ) 5. Input Terminal Pin Assignment 5.1 Input signal & Power 5.2 Back-light Unit 5.3 Input Signal,Basic Display Colors and Gray Scale of Each Colors - - - - - - - - - - - - - - - - - - - ( 15 ) 6. Interface Timing 6.1 Timing Parameters (Sync & DE mode) 6.2 Timing Diagrams of interface Signal (Sync & DE mode) 6.3 Timing Parameters (DE only mode) 6.4 Timing Diagrams of interface signal (DE only mode) 6.5 Power ON/OFF Sequence 7. Outline Dimension 8. General Precautions 8.1 Handling 8.2 Storage 8.3 Operation 8.4 Others - - - - - - - - - - - - - - - - - - - ( 20 ) - - - - - - - - - - - - - - - - - - - ( 21 )
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SAMSUNG TFT-LCD
GENERAL DESCRIPTION
DESCRIPTION LT150X1-151 is a color active matrix TFT (Thin Film Transistor) liquid crystal display (LCD) that uses amorphous silicon TFT switching devices. This model is composed of a TFT LCD panel, a driver circuit and a back-light system. The resolution of 15.0- inch contains 1,024 x 768 pixels and can display up to 262,144 colors. 6 o'clock direction is the optimum viewing angle. FEATURES * High contrast ratio, High aperture structure * Wide viewing angle * High-speed response * XGA(1024x768 pixels) resolution * Low power consumption * 2 Dual CCFTs (Cold Cathode Fluorescent Tube) * Sync&DE (Data Enable) Mode and DE only Mode * TTL Interface with 2 pixels / clock APPLICATIONS * Desktop monitors * Display terminals for AV application products * Monitors for Industrial machine GENERAL SPECIFICATIONS ITEM Display area Driver element Display colors Number of pixel Pixel arrangement Pixel pitch Display Mode Surface treatment SPECIFICATION 304.128(H) x228.096(V) (15 inch diagonal ) a-Si TFT active matrix 262,144 1024 x 768 RGB vertical stripe 0.297(H) x 0.297(W) Normally white Haze 13 , Hard - Coating (3H) mm pixel UNIT mm NOTE
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SAMSUNG TFT-LCD
Mechanical Information
ITEM Horizontal (H) Module size Vertical (V) Depth (D) Weight MIN. TYP. 368 275 MAX. 20 1550 NOTE mm mm mm g
1. ELECTRICAL ABSOLUTE RATINGS
1.1 TFT LCD MODULE
ITEM Power Supply Voltage SYMBOL VDD MIN. Vss-0.3 MAX. 6.0 UNIT V ( Vss =GND= 0 V) NOTE
(1)
NOTE (1) Within Ta (25 2 C)
1.2 BACK-LIGHT UNIT
ITEM Lamp current Lamp frequency SYMBOL IL fL MIN. 4.0 30 MAX. 12.0 80 UNIT. mArms KHz
Ta = 25 2 C NOTE (1),(2) (1)
NOTE (1) Permanent damage to the device may occur if maximum values are exceeded. Functional operation should be restricted to the conditions described under Normal Operating Conditions. (2) Specified values are for a dual lamp (Refer to the Note(1) in the page 10 for further information.).
Doc. No : PI004
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SAMSUNG TFT-LCD
2. OPTICAL CHARACTERISTICS
The following items are measured under stable conditions. The optical characteristics should be measured in a dark room or equivalent state with the methods shown in Note (4). Measuring equipment : TOPCON BM-5A
* Ta = 25 2 C , VDD = 5V, fv= 60Hz, fDCLK=32.5MHz, IL = 11.2 mArms ITEM Contrast Ratio (Center of screen) Response Rising Time at Ta Falling Luminance of White (Center of screen) Red SYMBOL CONDITION CR TR TF YL = 0, RX RY GX Color Chromaticity ( CIE ) Green GY BX Blue BY WX White WY L Hor. Viewing Angle Ver. R H L CR
> _
MIN. 60 60
TYP. 200 20 30 200 0.619 0.343 0.298 0.595 0.146 0.104 0.294 0.325 -
MAX. -
UNIT
NOTE (1), (2), (4)
msec Degrees 55 55 cd/m2
(1), (3)
(1), (4)
= 0 Normal Viewing Angle
(1), (4)
5
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SAMSUNG TFT-LCD
Note 1) Definition of Viewing Angle : Viewing angle range (5 CR ) Normal Line = 0o, = 0o L R L =90o L H 12 o'clock direction H = 90o
x
y
6 o'clock direction L= 90o
y'
x'
R =90o
Note 2) Definition of Contrast Ratio (CR) : Ratio of gray max (Gmax) ,gray min (Gmin) at the center point of panel. Luminance with all pixels white (Gmax) CR = Luminance with all pixels black (Gmin)
Note 3) Definition of Response time : Sum of TR ,TF
Display data
White(TFT OFF)
Black(TFT ON)
White(TFT OFF)
TR Optical Response 100% 90%
TF
10% 0% Time
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SAMSUNG TFT-LCD
Note 4) After stabilizing and leaving the panel alone at a given temperature for 30 min , the measurement should be executed. Measurement should be executed in a stable, windless, and dark room. 30 min after lighting the back-light. This should be measured in the center of screen. Dual lamp current : 11.2mA (5.6mA x 2 ,Refer to the note(1) in the page 10 for further information.) Environment condition : Ta = 25 2 C
Photo-detector ( TOPCON BM-5A)
Field = 2
o 40 cm
TFT-LCD module
LCD panel
center of the screen
Optical characteristics measurement setup
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SAMSUNG TFT-LCD
3. ELECTRICAL CHARACTERISTICS
3.1 TFT LCD MODULE
ITEM Voltage of Power Supply Input Voltage High Low White Current of Power Supply Mosaic V.stripe Vsync Frequency Hsync Frequency Main Frequency Rush Current fV fH fDCLK Irush SYMBOL VDD VIH VIL MIN 4.75 2.64 GND TYP 5.0 360 380 590 60 48.3 32.5 MAX 5.25 VDD 0.6 640 2.5 UNIT V V (1) V mA mA mA Hz kHz MHz A (3) (5) (2)(4)*a (2)(4)*b (2)(4)*c Ta= 25 2 C NOTE
IDD
-
Note (1) MCLK , Vsync , Hsync , DE , RA0 RA5 , GA0 GA5 , BA0 BA5 , RB0 RB5 , GB0 GB5 , BB0 BB5 (2) fV=60Hz, fDCLK =32.5MHZ, VDD = 5.0V, DC Current. (3) 2 Pixels/clock (4) Power dissipation check pattern
Doc. No : PI004
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SAMSUNG TFT-LCD
(5) Measurement Conditions
5V M1 2SK1059
VDD ( LCD
R1 47K FUSE C1 1uF
INPUT)
CONTROL SIGNAL
R2 1K M2 2SK1399
(HIGH to LOW)
12V
R3 ( 47K )
C2
C3 1uF
10000pF
Note : Control Signal : High(+5V) -->Low(Ground) All Signal lines to panel except for power 5V : Ground The rising time of supplied voltage is controlled to 470us by R3 and C2 value. 0.9 VDD GND 0.1 VDD Rising Time 5V
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SAMSUNG TFT-LCD
3.2 BACK-LIGHT UNIT
The back-light system is an edge-lighting type with 2 dual CCFTs(Cold Cathode Fluorescent Tube). The characters of two dual lamps are shown in the following tables. Ta= 25 2 C ITEM Lamp Current Lamp Voltage Lamp Frequency Operating Life Time SYMBOL IL VL fL Hr MIN 4.0 20,000 TYP 11.2 690 55 MAX 11.6 1100 (25C) 1420 (0C) UNIT mArms Vrms kHz Hour (2) (3) (4) NOTE (1)
Startup Voltage
Vs
Vrms
Note) The waveform of the inverter output voltage must be area symmetric and the design of the inverter must have specifications for the modularized lamp. The performance of the back-light, for example life time or brightness, is much influenced by the characteristics of the DC-AC inverter for the lamp. So all the parameters of an inverter should be carefully designed so as not to produce too much leakage current from high-voltage output of the inverter. When you design or order the inverter, please make sure that a poor lighting caused by the mismatch of the back-light and the inverter(miss lighting, flicker, etc.) never occur. When you confirm it, the module should be operated in the same condition as it is installed in your instrument. Note (1) u Dual lamp current is measured with current meter for high frequency as shown below. u Refer to the block diagram of the back-light unit in the next page for more information. u Specified values are for a dual lamp.
HOT 1 ( Pink ) HOT 2 ( Pink ) A COLD ( White )
LCD MODULE
1 2 4
INVERTER (SIC -141)
(2) Lamp frequency may produce interference with horizontal synchronous frequency and this may cause line flow on the display. Therefore lamp frequency shall be detached from the horizontal synchronous frequency and its harmonics as far as possible in order to avoid interference. (3) Life time (Hr) of a lamp is defined as the time in which it continues to operate under the condition of Ta = 25 2 C and IL = 10 mArms until the brightness becomes 50% or lower than it's original value. (4) The voltage above this value should be applied to the lamps for more than 1 second to startup. Otherwise the lamps may not to be turned on.
Doc. No : PI004
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SAMSUNG TFT-LCD
4. BLOCK DIAGRAM
4.1 TFT LCD MODULE
Timing Signal Display Data
Data Driver Timing Converter
DC Power supply LCD Drive Analog Circuit
Gate Driver
TFT-LCD
4.2 BACK-LIGHT UNIT
1 2 3 4 HOT 1 HOT 2 NC COLD
1 2 3 4
HOT 1 HOT 2 NC COLD
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SAMSUNG TFT-LCD
5. INPUT TERMINAL PIN ASSIGNMENT
5.1. TFT LCD MODULE (Interface Signal & Power) Connector : Hirose DF14A-30P-1.25H Matching Socket : Hirose DF14-30S-1.25C
Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Symbol VDD VDD GND MCLK GND VSYNC HSYNC DE GND RA0(ODD) RA1 RA2 RA3 RA4 RA5 GND GA0(ODD) GA1 GA2 GA3 GA4 GA5 GND BA0(ODD) BA1 BA2 BA3 BA4 BA5 GND Function Power Supply [+5.0V] Power Supply [+5.0V] Ground Data Clock Ground Vertical Sync Signal Horizontal Sync Signal Data Enable Ground Red Data [LSB] - ODD Red Data Red Data Red Data Red Data Red Data [MSB] -ODD Ground Green Data [LSB] - ODD Green Data Green Data Green Data Green Data Green Data [MSB] -ODD Ground Blue Data [LSB] -ODD Blue Data Blue Data Blue Data Blue Data Blue Data [MSB] -ODD Ground Polarity Negative Negative Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Remark (1) -
Doc. No : PI004
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SAMSUNG TFT-LCD
Connector : Hirose DF14A-25P-1.25H Matching Socket : Hirose DF14-25S-1.25C
Pin NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Symbol GND RB0(EVEN) RB1 RB2 NC(GND) RB3 RB4 RB5 GND GB0(EVEN) GB1 GB2 NC(GND) GB3 GB4 GB5 GND BB0(EVEN) BB1 BB2 NC BB3 BB4 BB5 GND Function Ground Red Data [LSB] -EVEN Red Data Red Data No Connection Red Data Red Data Red Data [MSB] -EVEN Ground Green Data [LSB] -EVEN Green Data Green Data No Connection Green Data Green Data Green Data [MSB] -EVEN Ground Blue Data [LSB] -EVEN Blue Data Blue Data No Connection Blue Data Blue Data Blue Data [MSB] -EVEN Ground Polarity Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Positive Remark -
Note (1) Display data is sampled at the falling edge of data clock.
5.2 BACK-LIGHT UNIT
PIN No. 1 2 3 4 Connector Part No. INPUT [ ch1 ] , [ ch2 ] HOT 1 HOT 2 N.C COLD Color Pink Pink White JST BHR-04VS-1 Function High Voltage High Voltage No Connection Ground
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SAMSUNG TFT-LCD
5.3 Input Signal,Basic Display Colors and Gray Scale of Each Colors
Note) u Definition of Gray : Rn : Red Gray, Gn : Green Gray, Bn : Blue Gray (n = Gray level) u Input Signal : 0 = Low level voltage, 1 = High level voltage
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SAMSUNG TFT-LCD
6. INTERFACE TIMING
6.1 Timing Parameters ( SYNC&DE Mode )
Signal Item Frequency Clock High Time Low Time Setup Time Data Data Enable Horizontal Sync Vertical Sync Horizontal Signal Vertical Signal Hold Time Setup Time Cycle Pulse Width Cycle Pulse Width Display Start Display period Display Start Display Period Symbol 1 / TC TCH TCL TDS TDH TES TH THP TV TVP THS THD TVS TVD MIN 4 4 4 4 4 772 1 148 512 768 TYP 32.5 20.68 672 68 16.7 806 148 512 35 768 MAX 35 148 512 768 Unit MHz nsec nsec nsec nsec nsec usec clocks clocks msec lines lines clocks clocks lines lines (1) Note
Note (1) u The duration of DE [DTMG] signal must be longer than 1 clock period at every horizontal sync. Period u In case DE is fixed "Low", Panel operates by Sync only mode. In this case, DE signal shouldn't be kept "High" during operation.
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SAMSUNG TFT-LCD
6.2 Timing diagrams of interface signal (SYNC&DE mode)
TV VSYNC TVS TVP HSYNC TVS DE TVD
TH HSYNC THP DCLK TC THS DE THD
DATA SIGNALS
Valid display data ( 512 clocks )
TC TCH
2.64V 50% 50%
TCL
50% 0.6V
DCLK
TDS DISPLAY DATA TES
2.64V
TDH
2.64V 0.6V
DE
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SAMSUNG TFT-LCD
6.3 Timing Parameters ( DE only mode )
Signal
Item Frequency
Symbol 1 / TC TCH TCL TDS TDH TES TV TV D TH THD
MIN 4 4 4 4 4 772 768 512
T YP 32.5 16.7 806 768 672 512
MAX 768 512
Unit MHz nsec nsec nsec nsec nsec
msec lines
Note
Clock
High Time Low Time Setup Time
Data Data Enable Frame Frequency Vertical Active Display Term One Line Scanning Time Horizontal Active Display Term
Hold Time Setup Time Cycle Display Period Cycle Display Period
(1)
lines clocks clocks
Note (1) When LT150X1-151 model is operated by DE only mode, Hsync and Vsync input signals should be fixed to "Low" for stable operation. Otherwise, the module could operate abnormally.
Doc. No : PI004
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SAMSUNG TFT-LCD
6.4 Timing diagrams of interface signal ( DE only mode )
TV
TVD DE
TH
DCLK TC THD DE
DATA SIGNALS
Valid display data ( 512 clocks)
TC TCH
2.64V 50% 50%
TCL
50% 0.6V
DCLK
TDS DISPLAY DATA TES
2.64V
TDH
2.64V 0.6V
DE
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SAMSUNG TFT-LCD
6.5 Power ON/OFF Sequence : To prevent a latch-up or DC operation of the LCD module, the power on/off sequence should be as the diagram below.
0.9 VDD 0.9 VDD 0.1 VDD
Power Supply VDD
0.1 VDD 0V
0 T1 10 msec 0 T2 50 msec 0 T3 50 msec 1sec T4 Signals
0V
T1 T2
VALID
T3 T4
Power On
Power Off
Back-light(Recommended) 250 msec T5 50 msec T6 T5
50%
50%
T6
Power ON/OFF Sequence NOTE. (1) The supply voltage of the external system for the module input should be the same as the definition of VDD. (2) Apply the lamp voltage within the LCD operation range. When the back-light turns on before the LCD operation or the LCD turns off before the back-light turns off, the display may momentarily become white. (3) In case of VDD = off level, please keep the level of input signals on the low or keep a high impedance. (4) T4 should be measured after the module has been fully discharged between power off and on period. (5) Interface signal shall not be kept at high impedance when the power is on.
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SAMSUNG TFT-LCD
7. OUTLINE DIMENSION
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SAMSUNG TFT-LCD
8. GENERAL PRECAUTIONS
8.1 Handling (a) When the module is assembled, It should be attached to the system firmly using every mounting holes. Be careful not to twist and bend the modules. (b) Refrain from strong mechanical shock and / or any force to the module. In addition to damage, this may cause improper operation or damage to the module and CCFT back-light. (c) Note that polarizers are very fragile and could be easily damaged. Do not press or scratch the surface harder than a HB pencil lead. (d) Wipe off water droplets or oil immediately. If you leave the droplets for a long time, Staining and discoloration may occur. (e) If the surface of the polarizer is dirty, clean it using some absorbent cotton or soft cloth. (f) The desirable cleaners are water, IPA(Isopropyl Alcohol) or Hexane. Do not use Ketone type materials(ex. Acetone), Ethyl alcohol, Toluene, Ethyl acid or Methyl chloride. It might permanent damage to the polarizer due to chemical reaction. (g) If the liquid crystal material leaks from the panel, it should be kept away from the eyes or mouth . In case of contact with hands, legs or clothes, it must be washed away thoroughly with soap. (h) Protect the module from static , it may cause damage to the CMOS Gate Array IC. (i) Use finger-stalls with soft gloves in order to keep display clean during the incoming inspection and assembly process. (j) Do not disassemble the module. (k) Do not pull or fold the lamp wire. (l) Do not adjust the variable resistor which is located on the back side. (m) Pins of I/F connector shall not be touched directly with bare hands.
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SAMSUNG TFT-LCD
8.2 Storage (a) Do not leave the module in high temperature, and high humidity for a long time. It is highly recommended to store the module with temperature from 0 to 35 C and relative humidity of less than 70%. (b) Do not store the TFT-LCD module in direct sunlight. (c) The module shall be stored in a dark place. It is prohibited to apply sunlight or fluorescent light during the store.
8.3 Operation (a) Do not connect,disconnect the module in the " Power On" condition. (b) Power supply should always be turned on/off by the item 6.5 " Power on/off sequence ". (c) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference shall be done by system manufacturers. Grounding and shielding methods may be important to minimize the interference. (d) The cable between the back-light connector and its inverter power supply shall be a minimized length and be connected directly . The longer cable between the back-light and the inverter may cause lower luminance of lamp(CCFT) and may require higher startup voltage(Vs). 8.4 Others (a) Ultra-violet ray filter is necessary for outdoor operation. (b) Avoid condensation of water. It may result in improper operation or disconnection of electrode. (c) Do not exceed the absolute maximum rating value. ( the supply voltage variation, input voltage variation, variation in part contents and environmental temperature, so on) Otherwise the module may be damaged. (d) If the module displays the same pattern continuously for a long period of time,it can be the situation when the image "sticks" to the screen. (e) This module has its circuitry PCB's on the rear side and should be handled carefully in order not to be stressed.
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SAMSUNG TFT-LCD

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