1. AXIOMTEK LCD Training AXIOMTEK LCD Training AXIOMTEK Co., LTD. Customer Service Department Date: 2007/01/01 1st version

2. 2 Contents in brief LCD introduction LCD support Flow Chart Simple Assumption AXIOMTEK Offer Close up Q&A

3. 3 LCD Introduction LCD (Liquid Crystal Display) A type of display used in digital watches and many portable computers. LCD displays utilize two sheets of polarizing material with a liquid crystal solution between them. An electric current passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is like a shutter, either allowing light to pass through or blocking the light. Tracy: hot-> liquid crystal become clear Cold-> become solid & turbid Tracy: hot-> liquid crystal become clear Cold-> become solid & turbid

4. 4 LCD Panel Type Mono (Monochrome) : actually using two colors, one for the display image (the foreground) and one for the background. STN (Super Twisted Nematic) : using the Voltage to change the liquid crystal twisted angle to see the display; maximum 90 point of view. DSTN (Double Super Twisted Nematic) : a passive-matrix LCD technology that uses two display layers to counteract the color shifting that occurs with conventional super twist displays. TFT (Thin Film Transistor) : in which each pixel is controlled by from one to four transistors. The TFT technology provides the best resolution of all the flat-panel techniques, but it is also the most expensive. TFT screens are sometimes called active-matrix LCDs.

5. 5 LCD Panel Type comparison LCD Type LCD TypeFunctionMonoSTNDSTNTFT Color NoYes View Angle WideNarrow Wide Size 4”~10” 4”~12”5”~17” Cost LowMiddle High

6. 6 LCD Signal Transmission Interface 1 TTL (Transistor – Transistor Logic) A common interface type is easy to see in LCD manufacture. Application: Digital camera… Specification: Bandwidth: Up to 80Mbps Noise: High Distance: Maximum test about 75cm. Standard 20~50 cm.

7. 7 LCD Signal Transmission Interface 2 LVDS (Low Voltage Differential Signaling) This kind of interface type has good signal transmission Quality. The leader is OpenLDI. Application: Notebook, automobile telecommunications… Specification: Bandwidth: 622Mbps Noise: low (low EMI) Distance: 0~1000cm Standard 50 cm. (ex:PK898A,PK898B, LVDS cable only…..)

8. 8 LCD Signal Transmission Interface 2 DVI (Digital Visual Interface) This type bases on TMDS 、 PanelLink, usually using in LCD monitor, CD,DVD,CDMA,DV,The leader is Intel. Specification: Bandwidth: 650Mbps Noise: low (low EMI) Distance: 0~1000cm

9. 9 Start to Light Up LCD LCD LCD Inverter LCD cable/PK Inverter cable LCD Datasheet

10. 10 LCD Support Flow 1. Customer, Sales person ask AE team to support LCD lightening up service. 2. Customer fill in “ LCD Support Request Form “ to AXIOMTEK AE team. 3. AE team evaluate technical possibilities and check existing LCD database. 4. Customer sign back “ LCD Lightening up Agreement “ 5. Customer provide LCD Kit to AE 6. AE determine making LCD sample cable or not 7. AE Perform LCD Lightening up test ( hardware setup, function test, application test) 8. AE will provide complete solution. (Inverter cable, LCD cable, available VGA driver and BIOS) Record all technical information to LCD support list. (AE).

11. 11 LCD data sheet – General Information

12. 12 LCD data sheet – Resolution 1 Resolution ( pixels ) - VGA 640x480 - VGA 640x480 - SVGA 800x600 - SVGA 800x600 - XGA 1024x768 - XGA 1024x768 - SXGA 1280x1024 - SXGA 1280x1024 - UXGA 1600x1200 - UXGA 1600x1200

13. 13 LCD data sheet – Resolution 2 Resolution ( pixels ) -QVGA 320x240 - HVGA 640x240 ☺ The QVGA & HVGA use the 640x480 resolution in BIOS (320x240) (640x240) (640x480)

14. 14 LCD data sheet – Electrical Characteristics

15. 15 LCD data sheet – Connector&Pin assignment

16. 16 LCD Data Sheet – Backlight

17. 17 LCD data sheet – Timing Specification

18. 18 VGA Chip & LCD Type Support List # LCD support factors: Hardware(VGA chip,SBC output signal) Software (VGA BIOS, Driver) V SIS 552 V V (DSTN) SMI Lynx 721 / 712 V V VIA VT8606 Twister T VVVTFT VVSTN/DSTN VMONO VEL NS 5530 Trident 9525DVD C&TVGA Chip V Intel 845GV - C&T 69000/69030 standard BIOS don’t support EL / MONO - NS 5530 only support 18bit TFT -VIA VT8606 standard BIOS don’t support color DSTN / STN LCD -Intel 845GV support 4 pair data & one pair clock for each channel

19. 19 Embedded Board & LCD Support List Website address: www.axiomtek.com.tw/supportwww.axiomtek.com.tw/support FAQ -> Type LCD support List (When there is any new information, AE will update it to LCD support list for customer’s reference.)

20. 20 LCD Support List – Information 1 Pin assignment (depends on different VGA chip)

21. 21 LCD Support List – Information 2 History (BIOS smart view)

22. 22 LCD Support List – Information 3 BIOS LCD type setting / Panel Kit / Inverter

23. 23 Panel Kit Inclusion  Each Panel Kit includes: 1) conversion board 2) 44pin cable (for SBC connection) 3) LCD cable (for LCD connection) 4) inverter cable.

24. 24 Panel Kit – LCD connection Search PK LCD connector Pin assignment

25. 25 Panel Kit - Inverter connection Inverter connector Output: P1:+12V (yellow) P2:+5V (red) P3:N.C (white) P4:ENABLE (orange) P5:GND (black)

26. 26 Inverter data sheet - Connector&Pin assignment Output Pin assignment Input Pin assignment Connector type

27. 27 Make Inverter cable Inverter major input : +12V(+24V), GND, BL_EN, ADJ_BR

28. 28 Solution with Panel Kit SBC84600+PK898A+QF82V2

29. 29 Inquiry Service requirement 1. LCD datasheet 2. SBC model name 3. Inverter datasheet

30. 30 Make new LCD cable 1 1.SBC (LCD connector) & LCD (corresponding connector) 2.SBC (LCD pin assignment) & LCD (Input pin assignment) 3.Length

31. 31 Make new LCD cable 2 4. LCD cable quality Coaxial Cable Wire Coaxial Cable Wire Twisting Twisting - SHFCLK - LP - FLM - M/DE Shielding Shielding - - Braid Copper Net - Conductive fabric Tape - Sum-tube

32. 32 Make new LCD cable 3

33. 33 Solution with LCD cable Only

34. 34 BIOS LCD Type Selection AXIOMTEK smart view

35. 35 Modify VGA BIOS  VGA BIOS is the one of factor for lighting up LCD.  VGA BIOS is a self–upgradeable ROM package. Using C220.EXE to check VGA BIOS version (provide by Award) C220 84600A19.bin /d => 705SW75.ROM  The modification programs are authorized by VGA chip vendor. 1) Considering the control of BIOS version, we do not recommend customer to modify the register of VGA BIOS. 2)If there is no matching type for customer’s LCD,AXIOMTEK will help to modify a new BIOS but customer must provide the related data, LCD…

36. 36 LCD function Test Software Software - MODETEST.EXE - MODETEST.EXE - LCDTEST.EXE - LCDTEST.EXE - WINDOWS Driver - WINDOWS Driver Function Function - Test the display capability in different resolution - Test the display capability in different resolution - Test the display capability in different color resolution - Test the display capability in different color resolution - Check the display quality in specific mode - Check the display quality in specific mode - Different programs for different chipset - Different programs for different chipset

37. 37 Close Up Check the datasheet of LCD carefully Make sure panel driving Vcc from datasheet and has corrected by jumper (SBC,PK). Be careful when applying Vee to LCD Detail system and environment information - Reversion of CPU card - Version of BIOS - LCD/Inverter model name & datasheet - Cable length

38. 38 FAQ

39. 39 1. How to know the maximum support of resolution and color?  Memory size> (resolution x BIT pixel) / 8  For example: 2MBytes > (1024x768x16) /8 = 1.57MBytes 2MBytes > (1280x1024x8) /8 = 1.31MBytes p.s. : 8 BIT pixel = 2x2x2x2x2x2x2x2 = 256 color

40. 40 2. Why the display does not show full screen in DOS mode when the BIOS LCD type set over than 640x480 in GX1 board?  The default display resolution is 640x480 in DOS mode and GX1 does not support full screen function. If your LCD specification is higher than 640x480, the display will show narrower than your LCD screen.

41. 41 3.You may question why we do not design cable only for TTL LCD. Because of signal quality improvement, we use the panel kit to transmit LCD signal. For cost, quality control  Signal quality control (Data, Clock..).  Signal conversion from TTL to LVDS. some of Panel Kit has been designed with conversion IC from TTL to LVDS. E.g. PK898A,PK898B…

42. 42 4. Dual display is designed to display ASSYMMETRY screen with one single board. The type includes: Stand-along VGA chip, Dual VGA chips, Dual VGA chips on non-identical board (two VGA cards). SBC83675 – onboard VGA + PCI VGA card. SBC836A1 –CLE266VGA supports duo-display.

43. 43 The End