LCD

www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification 1. General Description The LP121X05 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent Lamp(CCFL) 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. This TFT-LCD has a 12.1 inch diagonally measured active display area with XGA resolution(768 vertical by 1024 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 6-bit gray scale signal for each dot, thus, presenting a palette of more than 262,144 colors. The LP121X05 has been designed to apply the interface method that enables low power, high speed, low EMI. Flat Link must be used as a LVDS(Low Voltage Differential Signaling) chip. The LP121X05 is intended to support applications where thin thickness, low power are critical factors and graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the LP121X05 characteristics provide an excellent flat display for office automation products such as Notebook PC. s}kzG M {”•ŽG j–•›™–“ i“–Š’ j–“œ”•Gk™Œ™Gj™Šœ› y–žGk™Œ™Gj™Šœ› General Features Active screen size Outline Dimension Pixel Pitch Pixel format Color depth Luminance, white Power Consumption Weight Display operating mode Surface treatments 12.1 inches(30.7cm) diagonal 261(H) x 198(V) x 4.7(D) mm(Typ.) 0.240(H) x 0.240(V) mm 1024 horiz. By 768 vert. Pixels RGB stripes arrangement 6-bit, 262,144 colors 150 cd/m2(Typ.) 4.27W(Typ) 270g(Typ.) Transmissive mode, normally white Hard coating(3H) Maker:NITTO Model Number : LNC-TEGAG150-C108T JUL 25, 2002 1/7 juX w–žŒ™G i“–Š’ qX aj–•›™–“GMGkˆ›ˆ aw–žŒ™G {m{Tsjk OXWY[GG^]_P iˆŠ’“Ž›Gsˆ”—GhššN  Ver. 1.0 www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification 2. Electrical Specifications The LP121X05 requires two power inputs. One is employed to power the LCD electronics and to drive the TFT array and liquid crystal. The second input which powers the CCFL, is typically generated by an inverter. The inverter is an external unit to the LCD. Table 1. ELECTRICAL CHARACTERISTICS Parameter MODULE : Power Supply Input Voltage Power Supply Input Current Differential Impedance Power Consumption LAMP : Operating Voltage Operating Current Established Starting Voltage at 25 ¶C at 0 ¶C Operating Frequency Discharge Stabilization Time Power Consumption Life Time Symbol Min. VCC ICC Zm PC 3.0 90 Values Typ. 3.3 0.284 0.322 0.421 100 0.94 Max. 3.6 0.342 0.370 0.484 110 1.13 Vdc A A A ohm Watt Units Notes Window Full Black 2 by 2 sub pixel 1 2 1 VBL IBL VS f BL TS PBL 550(6.5mA) 570(6mA) 700(3mA) 6.5 6.0 3.0 50 10,000 65 3.33 1010 1210 80 3 3.67 - VRMS mARMS VRMS VRMS kHz Minutes Watts Hrs 3 4 5 6 7 8 9 Notes : The design of the inverter must have specification for the lamp in LCD Assembly. The performance of the Lamp in LCM, for example life time or brightness, is extremely influenced by the characteristics of the DC-AC inverter. 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 unwanted lighting caused by the mismatch of the lamp and the inverter(no lighting, flicker, etc) never occurs. When you confirm it, the LCD Assembly should be operated in the same condition as installed in your instrument. 1. VCC=3.3V, 25°C, fV (frame frequency) = 60Hz condition. 2. This impedance value is needed to proper display and measured from LVDS TX to the mating connector. 3. The variance of the voltage is ± 10%. 4. The typical operating current is for the typical surface luminance (LWH) in optical characteristics. Ver. 1.0 JUL 25, 2002 2/7 www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification 5. The voltage above VS should be applied to the lamps for more than 1 second for start-up. Otherwise, the lamps may not be turned on. The used lamp current is the lamp typical current. 6. The output of the inverter must have symmetrical(negative and positive) voltage waveform and symmetrical current waveform.(Unsymmetrical ratio is less than 10%) Please do not use the inverter which has unsymmetrical voltage and unsymmetrical current and spike wave. Lamp frequency may produce interference with horizontal synchronous frequency and as a result this may cause beat on the display. Therefore lamp frequency shall be as away possible from the horizontal synchronous frequency and from its harmonics in order to prevent interference. 7. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%. TS is the time required for the brightness of the center of the lamp to be not less than 95%. 8. The lamp power consumption shown above does not include loss of external inverter. The used lamp current is the lamp typical current. 9. The life time is determined as the time at which brightness of the lamp is 50% compared to that of initial value at the typical lamp current on condition of continuous operating at 25 ± 2°C. ∗ Requirements for a system inverter design, which is intended to have a better display performance, a better power efficiency and a more reliable lamp, are following. It shall help increase the lamp lifetime and reduce leakage current. a. The asymmetry rate of the inverter waveform should be less than 10%. b. The distortion rate of the waveform should be within √2 ± 10%. * Inverter output waveform had better be more similar to ideal sine wave. * Asymmetry rate: Ip | I p – I –p | / Irms * 100% I -p * Distortion rate I p (or I –p) / Irms ∗ Do not attach a conducting tape to lamp connecting wire. If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter has abnormal action. Because leakage current is occurred between lamp wire and conducting tape. Ver. 1.0 JUL 25, 2002 3/7 www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification 3. Interface Connections Interface chip must be used FlatLink, part No. SN75LVDS84(Transmitter made by Texas Instrument Inc or equivalence. This LCD employs two interface connections, a 20 pin connector is used for the module electronics interface and the other connector is used for the integral backlight system. The electronics interface connector is a model DF19K-20P-1H manufactured by HIROSE. The pin configuration for the connector is shown in the table 3. Table 2. MODULE CONNECTOR PIN CONFIGURATION(LVDS) Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol Vcc Vcc GND GND A1M A1P GND A2M A2P GND A3M A3P GND CLKM CLKP GND NC NC GND GND Description Power(3.3V) Power(3.3V) Ground Ground Differential Signal Differential Signal Ground Differential Signal Differential Signal Ground Differential Signal Differential Signal Ground Differential Signal Differential Signal Ground No Connection No Connection Ground Ground Notes 1. Interface chips 1.1 LCD : LPS4S102S6L(LCD Controller) including LVDS Receiver 1.2 System : SN75LVDS84 or equivalent *Pin to Pin compatible with Thine LVDS 2. Connector 2.1 LCD : DF19K-20P-1H 2.2 Mating : DF19G-20S-1F or equivalent 2.3 Connector pin arrangement 20 1 . . . . [ LCD Module Rear View ] The backlight interface connector is a model BHSR-02VS-1, manufactured by JST. The mating connector part number is SM02B-BHS-1 or equivalent. The pin configuration for the connector is shown in the table below. Table 3. BACKLIGHT CONNECTOR PIN CONFIGURATION Pin 1 2 Symbol HV LV Description Power supply for lamp (High voltage side) Power supply for lamp (Low voltage side) Notes 1 1 Notes : 1. The high voltage side terminal is colored pink. The low voltage side terminal is white. Ver. 1.0 JUL 25, 2002 4/7 www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification Ver. 1.0 JUL 25, 2002 5/7 www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification Ver. 1.0 JUL 25, 2002 6/7 www.DataSheet4U.com LP121X05 Liquid Crystal Display Product Specification 4. PRECAUTIONS The LCD Products listed on this documents are not suitable for use of Military, Industry, Medical etc. System. If customers intend to use these LCD products for above application, Please contact our sales people In advance. Ver. 1.0 JUL 25, 2002 7/7