lcd panel training manual 2008. 3. 15 vd r&d 4lab
TRANSCRIPT
LCD Panel Training LCD Panel Training ManualManual
2008. 3. 15
VD R&D 4Lab.
ContentsContents
1. LCD Panel Structure &
Operation
2. LCD Panel Manufacturing
Process
3. Q&A
LCD Panel Structure & LCD Panel Structure & OperationOperation
LCD On/Off Theory LCD On/Off Theory
OFF ON
d=p/4
TN Mode TN Mode
Panel StructurePanel Structure
LCD ModuleLCD Module
BLUBLU
Gate(Al-Nd)Drain(Cr)
ITO Source(Cr)a-Si
G(gate)Cst (storage capacitance)
Drain(Cr)
Color Filter BM(Black Matrix)
Polarize plate
CLC
Cross section
LCD CellLCD Cell
T-con & Driver T-con & Driver
Gate D
river IC
Source Driver IC
Timing
Control IC
(Gate Array)
GraphicController
CPU
R(0:N)
G(0:N)
B(0:N)
R(0:N)
G(0:N)
B(0:N)
Hsync
Vsync
DE
MCLK
RGB(0:N)
Gate Clock
Start Vertical signal
analog data
Load signal
Start Horizontal signal
HCLK
Vcc
LVDS
Vcom Gamma Voltage
RVS/RVSB
DC/DC
AVdd
Von
Voff
AVdd
Output Enable
T-Con Block DiagramT-Con Block Diagram
Gate Driver IC 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 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 outputLOAD Signal(TP) Falling
n channel
output
64 * 1
Decoder
64 * 1
Decoder
OP AMP OP AMP
Vcom Vcom
Data Data
L/R
LC Operation LC Operation
Gate line
Source line
Liquid crystal layer
storage capacitor
Cst액정 capacitor
Clc
Displayelectrode
Common electrode Vcom
Liquid crystal layer
storage capacitor
Cst액정 capacitor
Clc
Displayelectrode
Common electrode Vcom
Gate On Gate Off
Gate On Gate 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 InterfaceLVDS Interface
Timing Timing 628H
Vsync
Hsync
DE
4H 23H 600H 1H
Hsync
CLK
DE
DATA INVALID VALID
1056clk
128clk 88clk 800clk 40clk
RSDS InterfaceRSDS Interface
mini-LVDS Interfacemini-LVDS Interface
PPDS InterfacePPDS Interface
AiPi InterfaceAiPi Interface
Gamma correctionGamma correction
Panel Manufacturing Panel Manufacturing ProcessProcess
TFT Array ProcessTFT Array Process
Gate Insulation Layer (SiNX)
Gate electrode & Cs electrode
Glass Substrate
Gate electrode
Data pattern
Color Filter Array ProcessColor Filter Array Process
Glass Substrate (Depth 0.7mm)
Common Electrode
Over Coat
Color Filter Pixel DesignColor Filter Pixel Design
LC Cell ProcessLC Cell Process
Pixel electrode (ITO)
Common electrode (ITO) Polarizer
PI Layer
Polarizer
TFT-Array Glass
Color filter Glass
LC
PI Print ProcessPI Print Process
Alignment Layer
Move
Alignment Layer
(T<100 Å)
PI Mask
Seal Print ProcessSeal Print Process
Alignment Layer
Alignment Layer
Seal pattern
Seal pattern
TFT Array Substrate
TFT-Array Substrate
Short Dispense ProcessShort Dispense Process
TFT Array Substrate
Common Electrode Alignment Layer
Seal pattern
LC Injection
Color filter Substrate
Spacer ProcessSpacer Process
Color filter Glass Color filter Glass
LC Drop Filling ProcessLC Drop Filling Process
Cell Scribe & Break ProcessCell Scribe & Break Process
LCD Panel
Polarizer Attachment Polarizer Attachment ProcessProcess
LCM ProcessLCM Process
Output
COG & TABCOG & TAB
TCP Bonding ProcessTCP Bonding Process
Handling Handling CautionsCautions
☞ 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 !Thank You !