LITEMAX LF4 Sunlight Readable.4" LCD Display (st Edition 3/26/24 ) All information is subject to change without notice. LITEMAX Electronics Inc. 4F, No.33, Lane235, Bauchiau Rd., Shindian City, Taipei County, Taiwan R.O.C. Tel : 8862899858 Fax: 88628993 Homepage: http://www.litemax.com.tw
Contents: Introduction and overview.... P3 A. Physical specifications... P4 B. Electrical specifications... P5. Pin assignment... P5 2. Absolute maximum ratings... P6 3. Electrical characteristics... P7 a. Typical operating conditions... P7 b. Display color v.s. input data signals...... P8 c. Input signal timing... P9 d. Display position... P e. Backlight driving conditions... P C. Optical specifications... P2 D. Reliability test items... P4 E. Display quality... P5 F. Handling precaution... P5 Appendix: Fig. LCM outline dimensions...... P6 Fig.2 LCM outline dimensions.... P8 Fig.3 Timing chart.... P8 Li27 Inverter... P9 LF4 Page 2
INTRODUCTION AND OVERVIEW This is a product specification that specifies form, fit, and function of the.4 TFT LCD monitor and its options. The LF4 products are a family of high bright LCD monitors intended for use in a variety of industrial and commercial applications. Some of these applications include Car TV, Kiosk, Control Panel, Fish Finder, Marine, POI, Teketing, Aviation, Advertising, Gas Pumps, Signage... The LCD panel for LF4 has a particularly fast response time of 35ms and consequently very well suited for video applications. The LF4 is a.4 active matrix TFT LCD with a native resolution of 8X6 (SVGA). It has a typical luminance of 5 nits with a +2VDC input. The video interface is through a standard 5 pin analog input with an integrated OnScreen Display (OSD). OUTLINE STRUCTURE AND PRINCIPLE LF4 module is composed of the driver LSIs for driving the TFT (Thin Film Transistor) array with an amorphous silicon thin film transistor liquid crystal display (asi TFT LCD) panel structure and a backlight. The asi TFT LCD panel structure is injected liquid crystal material into the narrow gap between a TFT array glass substrate and a color filter glass substrate. RGB (Red, Green, and Blue) data signals from a source system are modulated into a form suitable for active matrix addressing by the onboard signal processor and sent to the driver LSIs which in turn address the individual TFT cells. Working as an electrooptical switch, each TFT cell regulates transmitted light from the backlight assembly when worked by the data source. Color images are created by regulating the amount of transmitted light through the array of red, green and blue dots. APPLICATIONS Car TV, Kiosk, Control Panel, Fish Finder, Marine, POI, Teketing, Aviation, Advertising, Gas Pumps, Signage... FEATURES wide viewing angle Fast response time High Contrast Ratio LVDS Wide color gamut Very hight brightness Sunlight Readable LF4 Page 3
A. Physical specifications NO. Item Specification Remark Display resolution (pixel) 8(H) 6(V) 2 Active area (mm) 2.2(H) 58.4(V) 3 Screen size (inch).4(diagonal) 4 Pixel pitch (mm).264(h).264(v) 5 Color configuration R. G. B. Vertical stripe 6 Overall dimension (mm) 243.(W) 84.(H) 27.2(D) (typ.) Note 7 Weight (g) 68 ± Note : Refer to Fig.. & 2. LF4 Page 4
B. Electrical specifications. Pin assignment () Input signal interface Symbol Function Etc. Pin no V CC +3.3 V power supply 2 V CC +3.3 V power supply 3 GND Ground 4 GND Ground 5 RxIN LVDS receiver signal channel 6 RxIN+ 7 GND Ground 8 RxIN LVDS receiver signal channel 9 RxIN+ GND Ground RxIN2 LVDS receiver signal channel 2 2 RxIN2+ 3 GND Ground 4 CKIN LVDS receiver signal clock 5 CKIN+ 6 GND Ground 7 NC No Connection 8 NC No Connection 9 GND Ground 2 GND Ground CN (2P) connector: HRS DF 9K2PH or compatible LF4 Page 4
(2) LVDS transmitter/receiver signal mapping Symbol Function TxIN R Red data (LSB) TxIN R Red data TxIN2 R2 Red data TxIN3 R3 Red data 6 bit red display data TxIN4 R4 Red data TxIN5 R5 Red data (MSB) TxIN6 G Green data (LSB) TxIN7 G Green data TxIN8 G2 Green data TxIN9 G3 Green data 6 bit green display data TxIN G4 Green data TxIN G5 Green data (MSB) TxIN2 B Blue data (LSB) TxIN3 B Blue data TxIN4 B2 Blue data TxIN5 B3 Blue data 6 bits blue display data TxIN6 B4 Blue data TxIN7 B5 Blue data (MSB) TxIN8 Hs Horizontal sync. TxIN9 Vs Vertical sync. TxIN2 DE Data enable TxCLKIN CLK Clock Dot clock 2. Absolute maximum ratings (GND = V) Parameter Symbol Values Unit Remark Min. Max. Power voltage V CC.3 4 V DC At 25 Input signal voltage V LH.3 V CC +.3 V DC At 25 Operating temperature Top +5 Note Storage temperature T ST 2 +6 Note Note :The relative humidity must not exceed 9% noncondensing at temperatures of 4 or less. At temperatures greater than 4, the wet bulb temperature must not exceed 39. When operate at low temperatures, the brightness of CCFL will drop and the lifetime of CCFL will be reduced. Note 2:The unit should not be exposed to corrosive chemicals.. LF4 Page 6
3. Electrical characteristics a. Typical operating conditions Item Symbol Min. Typ. Max. Unit Remark Power supply voltage Input voltage V CC 3. 3.3 3.6 V Current I A 243.7 242 245.2 marms consumption I B 255.4 252. 253.5 marms Note Inrush current I RUSH 5 mapeak Note 2 Internal logic Low voltage V IL.3 V CC High voltage V IH.7V CC V CC Power ripple voltage V RP mvpp Note :Effective value (marms) at V CC = 3.3 V/25. I A I B Black ( ) 63 White 64 Grayscale Black Horizontal stripe line Gray ( 5 ) 63 Note 2: Refer to the following poweron condition. 9% Vcc % Sequence of Poweron/off and signalon/off Ton=47μs±% Power T T3 T2 T4 5ms T<8msec T2<7msec T5 3msec T3 Input signal 3msec T4 T5 msec Apply the lamp voltage within the LCD operating range. When the backlight turns on before the LCD operation or the LCD turns off before the backlight turns off, the display may momentarily become abnormal. LF4 Page 7
The above on/off sequence should be applied to avoid abnormal function in the display. In case of handling: Make sure to turn off the power when you plug the cable into the input connector or pull the cable out of the connector. b. Display color v.s. input data signals Data signal (: Low level, : High level) Display colors R5 R4 R3 R2 R R G5 G4 G3 G2 G G B5 B4 B3 B2 B B Basic colors Black Blue Red Magenta Green Cyan Yellow White Red grayscale Black Dark bright Red Green grayscale Black Dark bright Green Blue grayscale Black Dark bright Blue Note: Each basic color can be displayed in 64 gray scales using the 6 bit data signals. By combining the 8bit data signals(r, G, B), the 262,44 colors can be achieved on the display. Caution LF4 Page 8
c. Input signal timing Timing diagrams of input signal are shown in Fig 2. () Timing characteristics of input signals (a) DE mode Item Symbol Min. Typ. Max. Unit Remark Clock frequency Fck 38 4 48 MHz Horizontal blanking Thb 5 256 5 Clk Vertical blanking Tvb 28 5 Th (b) HV mode Item Symbol Min. Typ. Max. Unit Remark Clock frequency Fck 38 4 48 MHz Hsync period Th 85 56 3 Clk Hsync pulse width Thw 28 Clk Hsync front porch Thf 5 4 Clk Hsync back porch Thb 88 Clk Hsync blanking Thb 5 256 5 Clk Vsync period Tv 6 628 75 Th Vsync pulse width Tvw 4 Th Vsync front porch Tvf Th Vsync blanking Tvb 28 5 Th Hsync/Vsync phase shift Tvpd 2 32 Clk Item Symbol Value Unit Description Horizontal display start The 28 Clk After falling edge of Hsync, counting 28clk, then getting valid data from 29th clk s data. Vertical display start Tve 25 Th After falling edge of Vsync, counting 25 th, then getting 26th Th s data. LF4 Page 9
(2) The timing condition of LVDS Item Symbol Min. Typ. Max. Unit The differential level VID..6 V The common mode input voltage VIC VID 2.4 VID 2 2 V The input setup time tsu 5 ps The input hold time th 5 ps + V IAP + V ID + V IAM V ID = V IAP V IAM tsu th Ri, Gi, Bi i=~5 DE 7 CLK d. Display position D(, ) D( 2, ) D( X, ) D( 799, ) D( 8, ) D(,2 ) D( 2,2 ) D( X,2 ) D( 799,2 ) D( 8,2 ).... D(,Y ) D( 2,Y ) D( X,Y ) D( 799,Y ) D( 8,Y ).... D(,599 ) D( 2,599 ) D( X,599 ) D( 799,599) D( 8,599 ) D(,6 ) D( 2,6 ) D( X,6 ) D( 799,6) D( 8,6) LF4 Page
e. Backlight driving conditions Parameter Symbol Min. Typ. Max. Unit Remark Lamp voltage V L 42 Vrms Note Lamp current I L 33 36 39 marms Note Power consumption P L 25. W Note 2 Lamp starting voltage V S T= Vrms 7 T=25 Frequency F L 5 55 6 KH Z Note 3 Lamp life time L L 5, Hr Note, 4 Note : T= 25, I L = 6mA/Lamp (Total 6 lamps) Note 2: Inverter should be designed with the characteristic of lamp. When you are designing the inverter, the output voltage of the inverter should comply with the following conditions. () The area under the positive and negative cycles of the waveform of the lamp current and lamp voltage should be area symmetric (the symmetric ratio should be larger than 9%). (2) There should not be any spikes in the waveform. (3) The waveform should be sine wave as possible. (4) Lamp current should not exceed the maximum value within the operating Temperature (It is prohibited to over the maximum lamp current even if operated in The nonguaranteed temperature). When lamp current over the maximum value for a long time, it may cause fire. Therefore, it is recommend that the inverter should have the current limited circuit. Note 3: 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. Note 4: Brightness (I L =6mA/Lamp) to be decrease to the 5% of the initial value. Note 5: CN2~4 connector (backlight): JST BHR3VS Pin no. Symbol Function Remark H CCFL power supply (H.V.) Cable color: Pink 2 H CCFL power supply (H.V.) Cable color: Pink Mating connector: JST SM3(4.)BBHSTB CN5 connector (backlight): JST BHSR2VS Pin no. Symbol Function Remark L CCFL power supply (GND) Cable color: White 2 L CCFL power supply (GND) Cable color: Pink Mating connector: JST SM2BBHSSTB LF4 Page
C. Optical specifications (Note, Note 2) Response time Rising time Falling time Item Symbol Condition Tr Tf θ= Specification Min. Typ. Max. 25 2 3 Unit Remark ms Note 4 Contrast ratio CR θ= 4 5 Note 3,5 Viewing angle Top Bottom Left Right CR 4 6 6 6 deg. Note 3,6 Brightness Y L θ= 2 5 nit Note 3,7,8,9 Color chromaticity(cie) Wx.29.32.35 θ= Wy.3.33.36 Rx TBD TBD TBD Ry TBD TBD TBD Gx TBD TBD TBD Gy TBD TBD TBD Bx TBD TBD TBD By TBD TBD TBD Note 3,8,9 White uniformity δ W.3 Note 3,9, Note : Ambient temperature = 25. Note 2: To be measured in dark room after backlight warm up 3 minutes. Note 3: To be measured with a viewing cone of by Topcon luminance meter BM5A. Note 4: Definition of response time: The output signals of BM7 are measured when the input signals are changed from Black to White (falling time) and from White to Black (rising time), respectively. The response time means the interval between the % and 9% of amplitudes. Refer to figure as below. Sig % 9% "White" Black "White" nal (R ela tiv e % % Tr Tf LF4 Page 2
Note 5. Definition of contrast ratio: Contrast ratio is calculated with the following formula. Luminance on the white raster Contrast ratio (CR)= Luminance on the black raster Note 6: Definition of viewing angle: θ Note 7: Definition of the 5 points (from A to E) on panel, refer to figure as below Note 8: Definition of brightness: To measure at center point of the screen (C) (After light up 2 minutes) Note 9: Driving conditions for CCFL: I L =6 ma, 55KHz Frequency Note : Definition of white uniformity: δw = Maximum Luminance of five points (brightness) Minimum Luminance of five points (brightness) LF4 Page 3
D. Reliability test items (Tentative) Test tem Test Condition Remark High temperature storage 6, 24Hrs Note, 2, 3 Low temperature storage 2, 24Hrs Note, 2, 3 High temperature & high humidity operation 4, 9%RH, 24Hrs (No condensation) Note, 2, 3 High temperature operation 5, 24Hrs Note, 2, 3 Low temperature operation, 24Hrs Note, 2, 3 Electrostatic discharge (nonoperation) 5 pf,5ω,kv, second, 9 position on the panel, times each place Note 3 Vibration (nonoperation).5g, H Z ~ 2H Z ~ H Z 3 minutes for each Axis (X, Y, Z) Note, 2, 3 Mechanical shock (nonoperation) 5G/2ms, ±X, ±Y, ±Z halfsin, one time Note, 2, 3 Thermal shock (nonoperation). 2 ±3 3minutes 6 ±3 3minutes 2. cycles 3. Temperature transition time within 5 minutes Note, 2, 3 Note : Evaluation should be tested after storage at room temperature for one hour. Note 2: There should be no change which might affect the practical display function when the display quality test is conducted under normal operating condition. Note 3: Judgement:. Function OK 2. No serious image quality degradation LF4 Page 4
E. Display quality The display quality of the color TFTLCD module should be in compliance with the Litemax s OQC inspection standard. F. Handling precaution The Handling of the TFTLCD should be in compliance with the Litemax s handling principle standard. LF4 Page 5
LF4 Page 6 Fig. LCM outline dimensions (front side)
LF4 Page 7 Fig.2 LCM outline dimensions
Tvw Th Tv Tvf Tve Tvf X,599 X,6 Invalid X, X,2 X,3 X,599 X,6 Invalid Tvbl Tvd Thw Thb Th Thf The Thf 8,Y invalid,y 2,Y 3,Y 799,Y 8,Y invalid Thbl Thd ( pixel / clock) VIH VIL RGB,DE,Hs VIH VIL VIH VIL Tvpd CLK VIH VIL Tds,Tes,Ths Tch Tcl Tdh,Teh,Thh Fig.3 Timing chart Vs Hs RGB DE Hs CLK RGB DE Vs Hs LF4 Page 8
. ENVIRONMENT CHARACTERISTICS:. All Conditions are at 25 Ambient unless otherwi se specified 2. Operating Temperature ~~+55 3. Storage Temperature 25 +7 4. Humidity Operating 95 5. Humidity Storage 95 2. CONNECTOR PIN ASSIGNMENT: Input : CN4 Output : CN,CN2,CN3 Model : 2J6RT(9 ) Model : SM2(8.)BBHSTB Supplier : ORICH Supplier : JST Pin Symbol Pin Symbol Vin HV 2 Vin 2 HV 3 ON/OFF Output : CN5 4 Brt ADJ(.V~5.V) Model : SM2BBHSSTB 5 GND Supplier : JST 6 GND RETURN 2 RETURN TEST INSTRUMENT:. OSCILLOSCOPE : TDS38 DIGITAL REALTIME OSCILLOSCOPE 2. HIGH VOLTAGE PROBE : TEKTRONIX P5 (:) 3. CURRENT PROBE AMPLIFIER : TEKTRONIX AM53B 4. CURRENT PROBE : TEKTRONIX A632 5. DC POWER SUPPLY : GW GPC36D 6. MULTIMETER : FLUKE 45 DUAL DISPLAY Li27 Inverter Page 9
3. SCOPE 3 This document defines the requirements for the CCFL inverter of the TFTLCD panel. This product is compatible with Six Lamp Panel. 4. ELECTRICAL CHARACTERISTICS 4 INPUT Brt. ADJ=.V. PARAMETER SYMBOL MIN. NOM. MAX. UNIT REMARK INPUT VOLTAGE Vin.8 2. 3.2 V INPUT CURRENT Iin 45 77 2 ma LAMP FREQUENCY OUTPUT CURRENT OPEN OUTPUT VOLTAGE LAMP VOLTAGE FL(,2,3) 46 5 56 FL(4,5,6) 46 5 56 Iout(.2.3) 6. 6.5 7. Iout(4.5.6) 6. 6.5 7. Vs(,2,3) 5 Vs(4,5,6) 5 Vout,2,3 46 Vout 4,5,6 46 KHz ma Vrms Vrms RL=7K *6 Vin = 2V Vrmt=.V Vrmt=.V Vin=2V Vrmt=.V 42 INPUT Brt. ADJ=5.V.. PARAMETER SYMBOL MIN. NOM. MAX. UNIT REMARK INPUT VOLTAGE Vin.8 2. 3.2 V INPUT CURRENT Iin 64 83 5 ma RL=7K *6 Vin = 2V LAMP FREQUENCY FL(,2,3) 46 5 56 FL(4,5,6) 46 5 56 KHz Vrmt=5.V OUTPUT CURRENT Iout(,2,3) 4. 4.5 5. Iout(4,5,6) 4. 4.5 5. ma Vrmt=5.V LAMP VOLTAGE Vout,2,3 3 Vout 4,5,6 3 Vrms Vrmt=5.V NOTE: All Conditions are at 25 Ambient unless otherwise specified Li27 Inverter Page 2
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