LCD Panel Training Manual VD R&D 4Lab.

Contents 1.LCD Panel Structure & Operation 2. LCD Panel Manufacturing Process 3. Q&A

LCD Panel Structure & Operation

LCD On/Off Theory OFFON d=p/4

TN Mode

Panel Structure

LCD Module BLU

Gate(Al-Nd) Drain(Cr) ITO Source(Cr) a-Si G(gate) Cst (storage capacitance) Drain(Cr) Color FilterBM(Black Matrix) Polarize plate C LC Cross section LCD Cell

T-con & Driver

T-Con Block Diagram

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

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

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

LVDS Interface

Timing 628H Vsync Hsync DE 4H23H600H1H Hsync CLK DE DATAINVALIDVALID 1056clk 128clk88clk800clk40clk

RSDS Interface

mini-LVDS Interface

PPDS Interface

AiPi Interface

Gamma correction

Panel Manufacturing Process

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

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

Color Filter Pixel Design

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

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

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

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

Spacer Process Color filter Glass

LC Drop Filling Process

Cell Scribe & Break Process LCD Panel

Polarizer Attachment Process

LCM Process Output

COG & TAB

TCP Bonding Process

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.

Thank You !