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LCD Panel Training Manual

LCD Panel Training Manual. 2008. 3. 15 VD R&D 4Lab. Contents. LCD Panel Structure & Operation 2. LCD Panel Manufacturing Process 3. Q&A. LCD Panel Structure & Operation. d=p/4. OFF. ON. LCD On/Off Theory. TN Mode. Panel Structure. LCD Module. BLU. Drain(Cr). Gate(Al-Nd).

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LCD Panel Training Manual

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  1. LCD Panel Training Manual 2008. 3. 15 VD R&D 4Lab.

  2. Contents • LCD Panel Structure & Operation • 2. LCD Panel Manufacturing Process • 3. Q&A

  3. LCD Panel Structure & Operation

  4. d=p/4 OFF ON LCD On/Off Theory

  5. TN Mode

  6. Panel Structure

  7. LCD Module BLU

  8. Drain(Cr) Gate(Al-Nd) Cross section Color Filter BM(Black Matrix) a-Si CLC Source(Cr) Drain(Cr) Polarize plate ITO Cst (storage capacitance) G(gate) LCD Cell

  9. Gamma Voltage AVdd Vcom HCLK RVS/RVSB Start Horizontal signal Load signal Source Driver IC RGB(0:N) Vcc analog data R(0:N) G(0:N) R(0:N) B(0:N) CPU Timing Control IC (Gate Array) Graphic Controller G(0:N) Hsync LVDS Gate Driver IC B(0:N) Vsync DE MCLK Gate Clock Output Enable Start Vertical signal AVdd Von DC/DC Voff T-con & Driver

  10. T-Con Block Diagram

  11. STV Carry in out(1~n) CPV Gate Clock U/D OE1 INPUT CIRCUIT SHIFT REGISTER INPUT CONTROL BUFFER OE2 OE3 Vcom Von Voff Carry out Gate Driver IC

  12. R(0:N) Data Data G(0:N) B(0:N) Carry Out Shift Register STH(Carry in) DCLK 64 * 1 Decoder 64 * 1 Decoder L/R LOAD Signal(TP) Rising Latch OP AMP OP AMP V0 V1 D/A Converter Vn LOAD Signal(TP) Falling Voltage follower output n channel output Vcom Vcom Source Driver IC

  13. Source line Gate line Common electrode Vcom Gate On Gate Off storage capacitor Cst 액정 capacitor Clc Liquid crystal layer Display electrode Common electrode Vcom storage capacitor Cst Gate On Voltage 액정 capacitor Clc When Gate is off, Ioff current leaks and Storage capacitor (Cst) is used for clamp the data voltage during Gate off-period Liquid crystal layer Data voltage Display electrode ΔV Voltage drop Vcom Gate Off Voltage Gate On Gate Off LC Operation

  14. LVDS Interface

  15. 628H Vsync Hsync 4H 23H 600H 1H DE 1056clk Hsync 128clk 88clk 800clk 40clk CLK DE DATA INVALID VALID Timing

  16. RSDS Interface

  17. mini-LVDS Interface

  18. PPDS Interface

  19. AiPi Interface

  20. Gamma correction

  21. Panel Manufacturing Process

  22. TFT Array Process Data pattern Gate electrode Glass Substrate Gate Insulation Layer (SiNX) Gate electrode & Cs electrode

  23. Color Filter Array Process Common Electrode Over Coat Glass Substrate (Depth 0.7mm)

  24. Color Filter Pixel Design

  25. LC Cell Process Common electrode (ITO) Polarizer Color filter Glass LC PI Layer TFT-Array Glass Polarizer Pixel electrode (ITO)

  26. PI Print Process Alignment Layer Alignment Layer (T<100 Å) PI Mask Move

  27. Seal Print Process Seal pattern TFT-Array Substrate Alignment Layer Seal pattern Alignment Layer TFT Array Substrate

  28. Short Dispense Process Common Electrode Alignment Layer Color filter Substrate TFT Array Substrate Seal pattern LC Injection

  29. Spacer Process Color filter Glass Color filter Glass

  30. LC Drop Filling Process

  31. Cell Scribe & Break Process LCD Panel

  32. Polarizer Attachment Process

  33. LCM Process Output

  34. COG & TAB

  35. TCP Bonding Process

  36. Handling Cautions ☞ Do not twist & bend on the module. ☞ Refrain from strong mechanical shock or any force to the module. ☞ Do not press or scratch the surface harder than a HB pencil lead. ☞ Wipe off water droplets or oil immediately ☞ When the surface of polarizer is dirty, Clean with IPA, Hexane. ☞ Do not use Acetone, Ethyl alcohol & Keton type materials. ☞ Protect the module from the electro-static discharge. ☞ When the module is assembled in the set, Use finger rubber. ☞ Do not adjust the variable resistor. ☞ Do not store the TFT-LCD module in the direct sunlight. ☞ Power off, When you connect or remove the module.

  37. Thank You !

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