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 -------------------( 3 ) 1. Electrical Absolute Characteristics 1.1 TFT LCD Module 1.2 Back-light Unit -------------------( 4 ) 2. Optical Characteristics -------------------( 5 ) 3. Electrical Characteristics 3.1 TFT LCD Module 3.2 Back-light Unit -------------------( 8 ) 4. Block Diagram 4.1 TFT LCD Module 4.2 Back-light Unit - - - - - - - - - - - - - - - - - - - ( 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 - - - - - - - - - - - - - - - - - - - ( 20 ) 8. General Precautions 8.1 Handling 8.2 Storage 8.3 Operation 8.4 Others - - - - - - - - - - - - - - - - - - - ( 21 ) Doc. No : PI004 2 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 304.128(H) x228.096(V) (15 inch diagonal ) Driver element a-Si TFT active matrix Display colors 262,144 Number of pixel 1024 x 768 Pixel arrangement RGB vertical stripe Pixel pitch 0.297(H) x 0.297(W) Display Mode Normally white Surface treatment Haze 13 , Hard - Coating (3H) Doc. No : PI004 UNIT SPECIFICATION NOTE mm pixel 3 mm SAMSUNG TFT-LCD Mechanical Information MIN. TYP. MAX. NOTE Horizontal (H) - 368 - mm Vertical (V) - 275 - mm Depth (D) - - 20 mm - - 1550 g ITEM Module size Weight 1. ELECTRICAL ABSOLUTE RATINGS 1.1 TFT LCD MODULE ITEM Power Supply Voltage ( Vss =GND= 0 V) SYMBOL MIN. MAX. UNIT NOTE VDD Vss-0.3 6.0 V (1) NOTE (1) Within Ta (25 ± 2 °C) Ta = 25 ± 2 °C 1.2 BACK-LIGHT UNIT ITEM SYMBOL MIN. MAX. Lamp current IL 4.0 12.0 Lamp frequency fL 30 80 UNIT. mArms KHz 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 4 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 SYMBOL CONDITION Contrast Ratio (Center of screen) Response Rising Time at Ta Falling Luminance of White (Center of screen) Red MIN. TYP. MAX. CR - 200 - TR - 20 - TF - 30 - YL - 200 - φ = 0, RX θ= 0 - 0.619 RY Normal Viewing Angle - 0.343 - 0.298 GY - 0.595 BX - 0.146 BY - 0.104 WX - 0.294 WY - 0.325 θL 60 - - 60 - - 55 - - 55 - - GX Color Chromaticity ( CIE ) Green Blue White Hor. Viewing Angle θR φH Ver. Doc. No : PI004 CR > _ UNIT NOTE (1), (2), (4) msec (1), (3) cd/m2 (1), (4) (1), (4) - 5 Degrees φL 5 SAMSUNG TFT-LCD Note 1) Definition of Viewing Angle : Viewing angle range (5 ≤ CR ) Normal Line φ = 0o, θ = 0o θL θR 6 o’clock direction φ L= 90o φH φL x θ L =90o 12 o’clock direction φ H = 90o y y' x' θR =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) TR Optical Response White(TFT OFF) TF 100% 90% 10% 0% Time Doc. No : PI004 6 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 LCD panel TFT-LCD module center of the screen Optical characteristics measurement setup Doc. No : PI004 7 SAMSUNG TFT-LCD 3. ELECTRICAL CHARACTERISTICS 3.1 TFT LCD MODULE Ta= 25 ± 2 °C ITEM SYMBOL MIN TYP MAX Voltage of Power Supply VDD 4.75 5.0 5.25 V VDD V Input Voltage NOTE High VIH 2.64 - Low VIL GND - - 360 - mA (2)(4)*a - 380 - mA (2)(4)*b - 590 640 mA (2)(4)*c (1) White Current of Power Supply UNIT Mosaic IDD V.stripe 0.6 V Vsync Frequency fV - 60 - Hz Hsync Frequency fH - 48.3 - kHz Main Frequency fDCLK - 32.5 - MHz (3) Rush Current Irush - - 2.5 A (5) 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 8 SAMSUNG TFT-LCD (5) Measurement Conditions 5V M1 2SK1059 VDD ( LCD FUSE R1 47K INPUT) C1 1uF R2 CONTROL SIGNAL (HIGH to LOW) M2 2SK1399 1K 12V R3 C3 1uF ( 47K ) C2 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. 5V 0.9 VDD GND 0.1 VDD Rising Time Doc. No : PI004 9 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 SYMBOL MIN TYP MAX UNIT Lamp Current IL 4.0 11.2 11.6 mArms Lamp Voltage VL - 690 - Vrms Lamp Frequency fL - 55 - kHz (2) Operating Life Time Hr 20,000 - - Hour (3) Startup Voltage Vs - - Vrms (4) 1100 (25°C) NOTE (1) 1420 (0°C) 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) ü Dual lamp current is measured with current meter for high frequency as shown below. ü Refer to the block diagram of the back-light unit in the next page for more information. ü Specified values are for a dual lamp. LCD MODULE 1 2 4 HOT 1 ( Pink ) HOT 2 ( Pink ) A COLD ( White ) 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 10 SAMSUNG TFT-LCD 4. BLOCK DIAGRAM 4.1 TFT LCD MODULE Timing Signal Display Data Data Driver Timing Converter Gate Driver DC Power supply TFT-LCD LCD Drive Analog Circuit 4.2 BACK-LIGHT UNIT Doc. No : PI004 11 1 HOT 1 2 HOT 2 3 4 NC COLD 1 HOT 1 2 HOT 2 3 4 NC COLD 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. Symbol Function Polarity Remark 1 VDD Power Supply [+5.0V] - - 2 VDD Power Supply [+5.0V] - - 3 GND Ground - - 4 MCLK Data Clock - (1) 5 GND Ground - - 6 VSYNC Vertical Sync Signal Negative - 7 HSYNC Horizontal Sync Signal Negative - Positive - 8 DE 9 GND 10 RA0(ODD) Data Enable Ground Red Data [LSB] - ODD - - Positive - 11 RA1 Red Data Positive - 12 RA2 Red Data Positive - 13 RA3 Red Data Positive - 14 RA4 Red Data Positive - 15 RA5 Positive - 16 GND 17 GA0(ODD) Red Data [MSB] -ODD Ground Green Data [LSB] - ODD - - Positive - 18 GA1 Green Data Positive - 19 GA2 Green Data Positive - 20 GA3 Green Data Positive - 21 GA4 Green Data Positive - 22 GA5 Positive - 23 GND 24 BA0(ODD) Green Data [MSB] -ODD Ground Blue Data [LSB] -ODD - - Positive - 25 BA1 Blue Data Positive - 26 BA2 Blue Data Positive - 27 BA3 Blue Data Positive - 28 BA4 Blue Data Positive - 29 BA5 Positive - 30 GND Doc. No : PI004 Blue Data [MSB] -ODD Ground 12 - - SAMSUNG TFT-LCD Connector : Hirose DF14A-25P-1.25H Matching Socket : Hirose DF14-25S-1.25C Pin NO. Symbol 1 2 Function Ground GND RB0(EVEN) Polarity - Remark - Red Data [LSB] -EVEN Positive - 3 RB1 Red Data Positive - 4 RB2 Red Data Positive - 5 No Connection NC(GND) - - 6 RB3 Red Data Positive - 7 RB4 Red Data Positive - 8 RB5 Positive - 9 GND 10 Red Data [MSB] -EVEN - Ground GB0(EVEN) - Green Data [LSB] -EVEN Positive - 11 GB1 Green Data Positive - 12 GB2 Green Data Positive - 13 No Connection NC(GND) - - 14 GB3 Green Data Positive - 15 GB4 Green Data Positive - 16 GB5 Green Data [MSB] -EVEN Positive - 17 GND 18 Ground BB0(EVEN) - - Blue Data [LSB] -EVEN Positive - 19 BB1 Blue Data Positive - 20 BB2 Blue Data Positive - 21 NC No Connection 22 BB3 Blue Data Positive - 23 BB4 Blue Data Positive - 24 BB5 Positive - 25 GND - - Blue Data [MSB] -EVEN Ground - - Note (1) Display data is sampled at the falling edge of data clock. 5.2 BACK-LIGHT UNIT PIN No. INPUT [ ch1 ] , [ ch2 ] Color Function 1 HOT 1 Pink High Voltage 2 HOT 2 Pink 3 N.C - High Voltage No Connection COLD White 4 Connector Part No. Doc. No : PI004 Ground JST BHR-04VS-1 13 SAMSUNG TFT-LCD 5.3 Input Signal,Basic Display Colors and Gray Scale of Each Colors Note) ü Definition of Gray : Rn : Red Gray, Gn : Green Gray, Bn : Blue Gray (n = Gray level) ü Input Signal : 0 = Low level voltage, 1 = High level voltage Doc. No : PI004 14 SAMSUNG TFT-LCD 6. INTERFACE TIMING 6.1 Timing Parameters ( SYNC&DE Mode ) Signal Clock Data Data Enable Horizontal Sync Vertical Sync Horizontal Signal Vertical Signal Item Symbol MIN TYP MAX Unit Frequency 1 / TC - 32.5 - MHz High Time TCH 4 - - nsec Low Time TCL 4 - - nsec Setup Time TDS 4 - - nsec Hold Time TDH 4 - - nsec Setup Time TES 4 - - nsec - 20.68 - usec - 672 - clocks THP - 68 - clocks Cycle Pulse Width TV TVP 772 16.7 806 - msec lines 1 - 35 lines Display Start THS 148 148 148 clocks Display period THD 512 512 512 clocks Display Start TVS - 35 - lines Display Period TVD 768 768 lines Cycle TH Pulse Width 768 Note (1) Note (1) ü The duration of DE [DTMG] signal must be longer than 1 clock period at every horizontal sync. Period ü In case DE is fixed “Low”, Panel operates by Sync only mode. In this case, DE signal shouldn’t be kept “High” during operation. Doc. No : PI004 15 SAMSUNG TFT-LCD 6.2 Timing diagrams of interface signal (SYNC&DE mode) TV VSYNC TVS TVP TVD HSYNC TVS DE TH HSYNC THP DCLK TC THS THD DE DATA SIGNALS Valid display data ( 512 clocks ) TC TCH DCLK 2.64V 50% TCL 50% 50% 0.6V TDS TDH 2.64V DISPLAY DATA 0.6V TES 2.64V DE Doc. No : PI004 16 SAMSUNG TFT-LCD 6.3 Timing Parameters ( DE only mode ) Signal Clock Data Data Enable Frame Frequency Vertical Active Display Term One Line Scanning Time Horizontal Active Display Term Item Symbol MIN T YP MAX Unit Frequency 1 / TC - 32.5 - MHz High Time TCH 4 - - nsec Low Time TCL 4 - - nsec Setup Time TDS 4 - - nsec Hold Time TDH 4 - - nsec Setup Time TES 4 - - nsec TV 772 16.7 806 - msec lines TV D 768 768 768 lines TH - 672 - clocks THD 512 512 512 clocks Cycle Display Period Cycle Display Period Note (1) 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 17 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 TCL 2.64V DCLK 50% 50% 50% 0.6V TDS TDH 2.64V DISPLAY DATA 0.6V TES 2.64V DE Doc. No : PI004 18 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 Power Supply VDD 0.9 VDD 0.1 VDD 0.1 VDD 0V 0 ≤ T1 ≤ 10 msec 0 ≤ T2 ≤ 50 msec 0 ≤ T3 ≤ 50 msec 1sec ≤ T4 T1 T3 T2 T4 VALID Signals 0V Power On Power Off Back-light(Recommended) 250 msec ≤ T5 50 msec ≤ T6 50% T5 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. Doc. No : PI004 19 SAMSUNG TFT-LCD 7. OUTLINE DIMENSION Doc. No : PI004 20 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. Doc. No : PI004 21 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. Doc. No : PI004 22 SAMSUNG TFT-LCD