1

Computer connectionA computer can be connected to the RGB (VGA) or HDMI 1 connection on the TV. The HDMI connection will require a DVI to HDMI adapter if the PC has a DVI connector.

ResolutionVertical

Frequency (Hz)800x600 60Hz800x600 72Hz800x600 75Hz1024x768 60Hz1024x768 70Hz1024x768 75Hz1280x768 60Hz1360x768 60Hz

Some PC Resolutions

All LCD TV models are module level repair in and out of warranty. They are covered by a one year parts and labor warranty. Refer to the last page of the owner’s manual for more warranty information. For models under 30”, the Service Level is Factory Service Repair.

Set the monitor output resolution and vertical frequency onthe PC before connecting it to the TV. When using RGB

(VGA), the TV input will have to be changed from RGB-DTV to RGB-PC in the main input menu option. This is not requiredon the HDMI connection since it is auto sensing. If the message “OUT OF RANGE” appears on the screen, adjust the PC output to a format listed in the chart.

Introduction

XD is LG Electronics unique picture improving technology using an advanced digital signal processing algorithm. When selecting EZ Picture options (Daylight, Normal and Night time), XD is automatically changed to Auto. When selecting EZ Picture options (User 1 and User 2), you can choose Auto/Manual. When selecting Manual, you can adjust XD Contrast, XD color, and XD Noise.1) Press the MENU button and then use the up or down arrows to select the VIDEO menu.2) Press the right arrow and then use the up or down arrows to select XD.3) Press the right arrow and then use the up or down arrows to select Auto or Manual.

Manual:XD Contrast: Optimize the contrast automatically according to the brightness of the reflection.XD Color : Adjust the colors of the reflection automatically to reproduce natural colors asclosely as possible.XD Noise: Removes the noise up to the point where it does not damage the original picture.

Use the up or down arrows to select On or Off.4)Press Exit button to return to TV viewing or press MENU button to return to the previous menu.

XD ENGINE

XD EngineLG Innovation

Clarity

Color

Contrast

Brightness

Gradation

Cinema

Crystal Vue

Pure Palette

Contrast Pro

Bright Vista

Opti Grade

Real Cinema

• Six distinct processes that raise low resolution sources to near HD levels.

• All sources are improved in clarity, color, and contrast.

• Switchable On/Off• Works on all input signals:

High & Low Resolution

XD Engine Sub FunctionsComponents of Picture Quality

• This process goes a long way to improvement of HD sources in 720p or 1080i.

• HD Scaling, Sharpness enhancement, and the reduction of noise from factors such as weak broadcast signals or poor cable connection contribute to the outcome.

XD EngineCrystal Vue

• Reproduction of natural colors accurately representing the source of the film directors intent.

• Acting on “flesh tones” as the base line, all other colors will follow.

XD EnginePure Palette

• Greater level of contrast affection more variables of color.

• More scales of grey resulting in full bright white scenes.

• The ability to reproduce solid black.

XD EngineContrast Pro

• Input signals brightness levels are compared to those after processing (output).

• Differences or “loss” in brightness as a result is restored to original brightness for optimization of brightness levels.

XD EngineVista Bright

• It’s about bits, the higher the bit count, the greater the color reproduction.

• Greatest benefit in this area affects plasma displays.

• Previously, the 8 bit processing resulted in 256 grades of brightness.

• 2006 10 bit processing results in over 1024 grades of brightness.

XD EngineOpti Grade

• This process adapts to the miss-match inherent in sources developed for film. Often referred to as a 3:2 pull down.

• Eliminates “glitches” evident in film content displayed on displays originally designed for video.

XD EngineReal Cinema

11

Production Line

Production Line

LOCK SYSTEM1) After inputting the password, use the up or down arrows to choose Lock System.2) Press the right arrow and then use the up or down arrows to select On or Off. When you select On, the Lock System is enable.3) Press EXIT button to return to TV viewing or press MENU button to return to the previous menu.

SET PASSWORDChange the password by inputting a new password twice.1) After inputting the password, use the up or down arrows to choose Set password.2) Press the right arrow and then choose any 4 digits for your new password. As soon as the 4 digits are

entered, re-enter the same 4 digits in the Confirm . Then your changed password has been memorized.3) Press EXIT to return to TV viewing or press MENU to return to the previous menu.NOTE: If you ever forget your password, key in ‘7’, ‘7’, ‘7’, ‘7’ on the remote control.

TheoryThis section covers how an LCD Display works.

A Liquid Crystal Display is composed of a light source (backlight), a Liquid Crystal Panel, and a driving circuit. We start with a light source at the back of the panel composed of thin fluorescent bulbs (CCFLs - Cold Cathode Fluorescent Lamps). This light passes through filters to help create a uniform light source. Then the light passes through the Liquid Crystal Panel which is composed of thousands of pixels that control the flow of light through the panel to make images.

Liquid crystal display

Liquid crystal PanelBelow (on the left) is a cross section of a liquid crystal panel.The key to an LCD's operation is the polarizer. The polarizer only allows a certain wavelength of light to pass through. Thetwo polarizer's are mounted at a 90 degree angle with respect

to each other, which prevents light from passing through. The liquid crystals are used to twist the light beam 90 degrees and allow light to pass through that cell. Color comes from a simple light filter.

BR G

Color FilterTo realize color of the Display, array Red,Green & Blue color paint beneath Upper Glass Panel regularly inaccord with Pixel electrode of lower Glass Panel.

Types of Pixel Arrangement

Divide the white light from optical source into R,G,B

Glass substrate

Pixel White light

① Delta Arrangement

Common electrode

The Function of Color Filter

② Stripe Arrangement ③ Mosaic Arrangement

IPS Arrangement

Each sub-pixel or cell (a red, green, and blue sub-pixel equals one pixel) is controlled by a Thin Film Transistor (TFT). This provides accurate control of each cell and makes for an accurate picture. Some methods used in the past that didn't involve a switch and current could leak to surrounding cells resulting in a blurred image. A TFT is a semiconductor (bottom-right picture), it behaves like a relay switch.

IPS Arrangement (CHEVRON Pixel Design)

VIDEO PATH

NT

Circuit descriptionThe ATSC/NTSC tuner can receive both terrestrial analog and terrestrial digital signals. But the NTSC tuner can receive terrestrial analog only. Therefore if you run two displays at The same time, it is not possible to see two digital channels.A/V SW (CXA2069) is the IC that takes external input terminal signals and broadcast signals from the tuners and handles them selectively. Audio signals are sent to MSP4450. Video signals are sent to HD-II via two paths - uPD64015 on the upper side is used to handle sub displays, while uPD64015 on the lower side controls the main display.To the lower side, signals are sent using an expensive 3D-comb filter with Y/C divided. The video decoder (uPD64015) is a chip that decodes input signals. HD-II is a chip that controls nearly all video-related functions, including brightness, sharpness, video formatting and scaling. If digital broadcasting is available, it comes through Transport Stream, which can be controlled from HD-II. Video SW (CXA2181) is an IC that outputs video signals selectively. The selected one is output through MSP (MSP4450) as a digital signal.

Drive ICTypical NON 1080P LCD Panel

TCP TYPE DRIVER IC(Tape Carrier Package)

Send signal from PCB to TFT-PANELGATE DRIVER IC(8EA) : Horizontal

Send signal from data line to TFT-Panel Gate

in series.

Each IC controls 128 lines horizontally.

SOURCE DRIVER IC(5EA) : Vertical

As the gate of TFT-Panel is ON, pixel data

is being sent from source to each pixel.

Each IC controls 154 lines vertically.

DRIVER IC

Circuit DescriptionThe MSP 44x0G family of single-chip Multi-standard Sound Processors covers the sound processing of all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip. These TV sound processing ICs now include versions for processing the multi-channel television sound (MTS) signal conforming to the standardrecommended by the Broadcast Television Systems Committee (BTSC). The DBX noise reduction, or alternatively, Micronas Noise Reduction (MNR) is performed alignment free. The MSP 44x0G has built-in automatic functions: The IC is able to detect the actual sound standard automatically (Automatic Standard Detection). Furthermore, pilot levels and identification signals can be evaluated internally with subsequent switching between mono/stereo/bilingual; no I2C interaction is necessary (Automatic Sound Selection). The CS5330A / 31A is a complete stereo analog-to digital converter which performs anti-alias filtering, sampling and analog-to-digital conversion generating 18-bit values for both left and right inputs in serial form. The output sample rate can be infinitely adjusted between 2 and 50 kHz. The CS5330A / 31A operates from a single +5V supply and requires only 150 mW for normal operation The CXA2069Q is a TV I2C bus-compatible AV switch IC. The video system and the stereo audio system both have 7 inputs and 3 outputs each. 4 of the 7 video system inputs support S2 and S protocols. The desired inputs can be independently assigned to each output (in the audio system, the left and right channels are processed as one unit) by I2C bus control. However, the same input is assigned to both the video and audio system output 3.

CPU(PPC405GPr)

I²C Master

CPLD(EPM570)

AT/NT/OOBTuner

(TDVM-H751P

NT Tuner(VP-15R)

NT Tuner(Korea Only)

(TDVS-H901R)

IEP2(LGDP4411)

SPDIFReceiver

(CS8415A)

ADC / w HDMI(MST3361)

NT DecoderMain

(µPD64012)

NT DecoderSub

(µPD64012)

PDPMODULE

Port Exp.(M62320)

Temp Sensor

(DS1621)

AvSwitch

(CXA2181Q)

AvSwitch

(CXA2069Q)

DASP(NSP2100A)

IndexPort Exp.(M62320)

Main MSP(MSP4440K)

I²CHUB

EEPROM(24LC512)

DPLL(LGDT1901B)

MAINVSB/QAM

(LGDT3703B)

SUBVSB/QAM

(LGDT3703B)

U-Com(MTV412MF)

Sub MSP(MSP4440K)

I²C_CH1 (Live)

I²C_CH2 (Dead)

I²C_CH3 (Live)

I²C_CH4 (Dead)

CPU_I²C

I²C_HUB_EN[1:4]

I²C Flowchart

From the Power Supply Board to the Converter BoardsFrom the Power Supply Board

to P1604 on the Digital Board

From the Power Board to P1603 on the Digital Board

From the Power Board to P301 on the Analog Board

SMPS MODULE

From the AV 2 Input Board

From the Power Board P201 to the Analog Board P301

Analog Board to Power LED Display and Key Board

From the Analog Board to the Display Led Board

ANALOG BOARD

From P406 on the De Interlace Board to the Digital Board at P1605

P202 on the Power Board

P406 on the De-Interlace Board

From P200 on the Power Board

POWER SUPPLY Resistance measurements

P200P201P202

P206

P205

P204

P203

SC100

Deep Sleep -AC Input is applied through D114 and D115 to R510 and R511 for start-up voltage to pin 1 of U500. U500 pin6 outputs drive to Q500 via D510 and resistor R513 to the gate of Q500. Q500 drives transformer T100 and D213 and L204 supplies 5v_STB. Regulation is accomplished by feedback through PC103A to PC103B back to pin 2of U500. D501 and R514 supply run voltage to pin 7 of U500 to run the supply. R501 is over current sense through R515 to pin 2 of U500 (FB/OC). Q510 and RC Network R517 and C681 are used for timing of U500. In Deep Sleep mode, the Power Supply only outputs the 5V_STB source. The unit is brought out of Deep Sleep mode by the DPM_ON/OFF signal from the main Micom on the Analog Board via the voltage derived from D209, Q206 and Q207 and applied to RLY_ON at pin 1 of the Micom / Sub on power supply board.

Standby-5V. Standby refer to Deep Sleep ModeAC Detect is developed via Diode D100 and through voltage ladder R110, R111, and R523 and is applied to the gate of U510. U510 cathode is pulled low by the high on the gate turning on PC101A. PC101A will cause PC101B to turn on pulling Micom / Sub pin 4 low. Micom / Sub pin 3 goes high turning on PC102A which will turn on PC102B which will take the base of Q501 low causing Q501 collector to go high. The high on collector of Q501 is applied to the 15 Volt regulator IC U103 developing 15 Volts which is sent to both relay's RL100, RL101 and also to pin 19 of U600. The 15 Volts will cause the two relays to close developing the 160 Volts and via start resistors R607, R608and R609 will start U600 to drive from pin 20 of U 600. FET's Q601 and Q600 which via L100 and D601 is the source for the 383 Volt supply to Q104 Drain. The 383 volt supply is applied though d113 and is the supply for IC500. A sample of the 383Volts is sent to the gate of U105 turning on Q106 which sends 15 volts to U106. U106 outputs drive to U110 which drives Q104 and Q105 and develops the 24 and 19 Volt sources. Regulation is accomplished by feedback via PC104A to PC104B to U106. The source of Q105 sent to pin 2 of U106 which is used for (FB / OCP). The circuit for the 12V and 6V sources are same as the 24 and 19 Volt sources.

FULL POWERThe 3.4V_ON is applied to Q206 base turning on Q206 which turns on Q204 supplying U202 with VC Voltage. U202 outputs drive from pins 3 and 5 to Q200 and Q201 to supply 3.4 volts to the digital and Inverter (ballasts) boards.

Defective ComponentInput

Defective HDMI Input

Defective RFInput

Defective RFInput

Defective RFInput

Defective Digital Input

No Audio - Composite & Component Input

No Audio - HDMI Input

No Audio - RF Input

No Audio - Digital Input

No Audio - General

A cable card is a PCMCIA card distributed by cable operators and inserted into a Digital Cable Ready (DCR) TV to enable premium services like digital cable. It provides authorization, CA (Conditional Access) decryption and CP (Copy Protection) encryption functions for the consumer’s DCR TV. Note there is a separate Training manual and training class devoted to DCR.

Cablecard

DiagnosticsThe table below describes how to navigate the Cablecard menu. This list of selectable Cablecard options will vary, depending on your cable service provider or Cablecard manufacturer. Also, belowtable shows how to access diagnostic screens for the DCR TV. Many of these screens are not described in the User Manual

Cablecard Troubleshooting•It is recommended that installers bring along a couple of Cablecards for troubleshooting. This will help eliminate the Cablecard as a possible problem during the installation. •Check that the Digital Cable Ready (DCR) TV, also referred to as a HOST, is functional without a Cablecard. The DCR will display all non-encrypted analog and digital content without a card installed. This test will eliminate basic TV circuitry as a possible problem.•Check that the Cablecard is inserted properly. When inserting cable card push carefullybut firmly until you feel the card click into place.•Verify RF from Cable System Tap: The installer can also connect a cable set top box to confirm reception of encrypted digital services. This will help eliminate the RF signal as a possible problem.•If the first Cablecard installed does not result in a User Interface screen (also referred to as MMI screen) within 5 - 7 minutes, try unplugging the AC Power cord of the DCR and reconnecting it (to reset the DCR). If this is still unsuccessful, try another Cablecard. •Look closely at the Cablecard device to ensure that none of the pinholes are blocked or clogged. Use a flashlight to check the Cablecard slot on the DCR TV to ensure that there are no bent pins.•If the second Cablecard is successful, make sure the CSR or Dispatcher knows the new MAC ID and Cablecard ID to complete the installation. The original card should be marked accordingly and returned for repair

•If the second Cablecard fails to bring up the User Interface screen, the technician should refer to the diagnostic menus on the DCR for further troubleshooting. The technician can pull up the User Interface screen manually through the menu choices. •If the technician is able to install the Cablecard device and access the User Interface screen (also referred to as MMI screen), and has relayed the information to the dispatcher, but is still not receiving encrypted programming, this programming may be protected through the use of copy protection directive. Ensure that the information passed to dispatch is correct. Relay again the Host ID, Cablecard ID and Data ID (Motorola only). Dispatch will send a hit to the Cablecardonce the information is checked and verified. The Cablecard must be paired to the Host before

copy protected programming can be displayed. Note that it may take several minutes from the time dispatch sends the authorization before it reaches the DCR device. The MMI screens should be checked to verify if the authorization has been received. For SA systems the host- pod pairing screen should say “Authorization Received.” For Motorola the Conditional Access MMI State parameter should say “Subscribed”. (These should be verified by POD Manufacturers or cable companies.)•To confirm the Headend Validation for displaying the encrypted channel, the technician should check the Cablecard menu. For SA systems, the Cablecard Copy Protection Information menu should say “Authorization Received”. For Motorola systems, the Conditional Access menu should say “Valid xx (2 digit)”.•If encrypted programming is still not displayed, installer should check the status of the following and refer to the chart on the pervious page.Cable Channel List : ReadyCablecard : InsertedFDC status (OOB Status) : LockSNR( Signal to Noise Ratio) : higher than 12 dB is normal range

Back Cabinet removal1) Remove the stand by removing the 6

screws holding it on.

2)Remove the 13 screws holding the backcover on.

3)Now re-install the four screws thatsecure the stand.

4)Remove the 12 screws that hold theshield on.

Board Descriptions

5)Remove the shield, but be careful not to damage the cable card ejection bar.

Digital BoardThe digital board contains the CPU,cable card slot, tuners, digital connections, and video processing.

Output Voltages:+5V 2A+3.4V 5A+6V 5A+12V 3A+19V 3.5A+24V 12A

Power Supply

CXA2181- IC Video Switching device. This IC selects the desired Video Input source and provides the I²C bus compatibility to deliver videodata to the HDII Video decryption IC.

The analog board consists of the rear connections for external inputs and the Monitor output connections. The Analog and Digital RF Connections are also present on the Analog board

Analog Board

CXA2069 -The CXA2069Q is a 7-input, 3-output audio/video switch featuring I²C bus compatibility for TVs. This IC has input pins that are compatible with S2 protocol.

The FLI8668 offers high integration for advanced, dual-channel applications of picture-in-Picture (PIP) and Picture-by-Picture (PBP). Two video decoders with 3D Comb filters and two channels of DCDI Processing, and true 10-bit performance provide the highest quality picture for a two channel application.Special performance features such as the Faroudja DCDI Cinema® video format converter, Blue Stretch, DDR Memory with a read write of 10 bits per pixel, and flexible sharpening Algorithms provide unparalleled performance. The video quality level that was exclusive to Faroudja® Home Theatre Systems is now available in a single-chip solution.The FLI8668 also comprises an integrated Analog Front End (AFE) that includes two Triple ADC’s a cross-point switch, and two Faroudja® Intellicomb™ 3D Comb Filters. The flexible AFE ensures simple PCB design with direct connections to TV tuners and input video connectors. Thus, the FLI8668, for a single LCD TV Chassis, is able to support worldwide standards. For regional variations, only a connector and firmware change are required.The integrated VBI data-slicer and decoder eliminate the need for external components Resulting in significant cost reduction. The FLI8668 supports many world wide VBI standards for applications of Tele-text, Closed Captioning, V-Chip, and other VBI Services. An embedded microprocessor and a versatile OSD in a single device will facilitate rapid development of a reliable and attractive product. The FLI8668utilizes the common “Cortez Family” firmware making migration easy and effortless across different hardware platforms within this family of Video Processors.

De-Interlace Board

2) Remove the 8 black larger screws holding the frame to the LCD panel

and the 16 screws on the outside of the frame holding it to the cabinet.

Remove the frame to gain access to the lamp ballasts & LCD driver. 1) First remove the 4 screws holding power supply down to gain access to the two screws underneath.

Frame Removal

There are 4 separate ballast boards and 1 LCD driver board. The LCD panel is not directly attached to the cabinet and can be lifted out and replaced if needed.

3) Now the ballast and LCD driver covers can be removed.

There are two rows of lamps behind the screen. At this time, the

lamps are part of the panel assembly and can’t be replaced individually.

What is TFT (Thin Film Transistor)?

TFTTRANSISTOR(MOS-FET)

GATEVth

DRAIN

SOURCE

GATE

DRAIN

SOURCE

Vth

When some voltage (Vth) is applied to the gate, data is delivered from Drain to Source : Switching characteristics

TFT is formed in each pixel

: Each pixel operates independently

TFT SubstrateTFT Section

Glass Substrate

Semiconductor

TFT elementSOURCE DRAINGATE

Dielectric

Pixel Electrode

TransparentPixel Electrode

Structure of TFT- LCD

Glass

Glass

-- - -

④ Liquid Crystal

Controls the amount of light by the voltagesupplied

Back Light

+

② GateOn/Off the TFT

- - - - - -

White (TFT Off) Black (TFT On)

① Transmit Source signal

Polarizer③ PixelSupply voltage to liquid crystal

+ + + +

- -

300 ㎛ (Approx....)

Common electrodeOne Pixel

Data Line

Pixel Electrode

Gate Line

)

)C/F Glass Substrate

TFT Glass Substrate

LiquidCrystal

TFT LCDSubstrate

HEATER

Grid 1

Grid 2

Grid 3

Grid 4

GLASS

Beam

Vacuum

Fluorescent plate

Deflection partElectron gun

(Braun tube : Luminous element) (TFT-LCD : Non-luminous element)

Polarizer Glass arrayPolarizer

TFT+ Transparent electrode

OpticalSource

Green

Top glass array(COLOR FILTER)

Transparent electrode

White light)

LiquidCrystal

Operation Principle

Drivecircuit

Data Drive ICPrinted PCB Circuit

Gate Drive IC

CONTROL IC

Voltage supply for video signal

Common electrodeBright Medium

Pixel array & arrangement

Lamp

Lamp

Inverter

Pixel electrode Liquid crystal

Liquid crystal panel

B/L Unit

Polarizer

Liquid crystal

TFT panelPolarizer

Lamp

Prism plateProtector

Light guide plate

Reflector

Dn-1Dn

Dn+1

RG

B

LCD Module Structure

Dark

CF panel

Back Light

CCFL LAMP(Cold Cathode Fluorescence Lamp)

InverterAC 1000V

LAMPLong life time (about 25,000 hr.)Easy to control brightnessSmall sizeEasy to attach

Located on the back of bottom glass substrate of TFT-Panel in Back Light Unit, supplies light to the Panel.

Structure

Demerits

Merits

Side Guided Type

ReflectorLamp

Light guide plate

LCD Panel

Direct Type

Lamp

LCD Panel

CASE

High efficiency of lightSimple structure

Thick

Thin and small volume

Complicated structure, expensive,and poor efficiency of light

CCFL (Cold Cathode Fluorescent Lamp)

Introducing EEFL Long Life Time

ElectrodeGlass Bead

Kov

Lead

: Hg: electron

EEFL (External Electrode Fluorescent Lamp)

External electrodePhosphor

: Hg: electron

For CCFL, Hg gas is consumed mainly near the internal electrode

For EEFL, longer life time is expected because there is no internal electrode consuming Hg gas

CCFL (Cold Cathode Fluorescent Lamp) EEFL (External Electrode Fluorescent Lamp)

V

I

StatingVoltage

OperatingVoltage

V

I

Starting&

OperatingVoltage

......

...

Simple structureComplicated structure

Simple structure, Low price

Low CostLamp manufacturing processLamp assembly structure

Large number of Lamp Drive by single inverter

Introducing EEFL

• Most favorable condition for narrow diameter by having no internal electrode

Not much is known theoretically, but the result shows having high efficiency than CCFL by small voltage drop of cathode than CCFL

Long life span : over 70,000 hrs

• Ion accelerated by high voltage & sputter of lamp glass by electron/ Phosphor damage

• Hg consumption : Compound of glass/phosphor

• Discharge by the initial electron in lamp• Electron generated by the collision energy of internal ion (Ar+, Ne+) and cathode (electron emitting material: MgO, TiO2, etc.)

Glow Discharge

EEFL

• Narrow diameter is impossible due to the characteristic of filament electrode• Φ6.5 is possible as of ’97

• Narrow diameter by using rod type metal electrode• Φ1.6 is possible as of ’03Others

Short life span : about under 10,000 hrs Average : about 50,000 hrs

• Thermion emission by filament heatingHot Cathode

• Electron generated by the collision energy of internal ion (Ar+, Ne+) and cathode

• Metal electrode emits free electron Cold Cathode• Electron created by the collision energy of internal ion (Ar+, Ne+) and cathode

Remark : Same principle of discharge : Electronic energy Hg UV Phosphor visible light, Only difference is the principle of initial electron generation

High efficiencyLow power loss by relatively small voltage

drop of cathode (about 10V)

Relatively lowPower loss by voltage

drop of cathode (about over 100V)

Efficiency

• Determined by the rate of Ba, Ca loss, which is coated on electrode

Separated by high temperature or the collision of internal ion causing blackening of electrode

Great loss when starting(Consumption of 1 starting = consumption

of lighting for about 1~2 hrs)

• Hg consumption due to the combination of electrode material & Hg by the sputtering of electrode

Life span

Arc DischargeGlow Discharge

Discharge

Principle

HCFLCCFL

Types of LampIntroducing EEFL

WIDE VIEWING ANGLE TECHNLOLGY

AllMakerTN

IPS

VA

OCB

Sharp

Maker

Fujitsu(MVA)

SS(PVA)

Para-A(LG)

Matsu-shita

HitachiLG

NEC IBMetc.

Structure ViewingAngle

ASV

Responsetime(On/Off)

MaterialPrice

WV film

Remark

•Mostly Under 15 inch

•W V film: Fuji monopoly

• Sharp’s original technology - strongpoint

•High brightness

-strongpoint•Wide viewing angle

•Response time of middle gray pattern is good

•Very fast response time => suitable for moving picture

170/170(?)

C-plate or WV film

Normal compensation

film( C-plate )

No compensation film170/170

170/170

160/120(140/120)

15ms

3~10ms

•Fujitsu only produce

~25ms

~25ms

25~40ms

MVA

Off On

고 pretilt

저 pretilt:

저 pretilt:

고 pretilt

Off On120/100

Normal compensation

film( C-plate )

LCD Mechanism

Back Light Structure

LCD PANEL

Top Prism

Bottom Prism

Protector

Light guide plate(Flat/Wedge)

Pattern(Dot/Shibo/V-cut)

Reflector

Lamp Housing(Lamp Reflector)

Lamp

Protector

Structure of Back Light Function

Displays the light adjusted by data signal

Same function as the bottom prism Protects top prism

Same function as the bottom prismIncreases luminance by 1.33 times thanthe bottom prism

Collects light and increases luminance by 1.55 times than light guide plate

Collects and equalize light from the light guide plate

Receives light from lamp and equalize the lighton the whole area

Transmits the light from guide plate again to maximize efficiency

Img.ooo

IC803 Pin 20 with Guide Plus Turned On

Img.001

IC803 Pin 20 with Guide Plus Turned Off

img.002IC803 Pin 21 Guide Plus Turned On

img.003

IC803 Pin 21 Guide Plus Turned Off

img.004

IC803 Pin 23 Guide Plus Turned On

Img.009IC803 Pin 24 Guide Plus Turned On

IC803 Pin 24 Guide Plus Turned Off

IC803 Pin 25 Guide Plus Turned On

IC803 Pin 25 Guide Plus Turned Off

IC803 Pin 27 Guide Plus Turned On

IC803 Pin 27 Guide Plus Turned Off

Waveform Taken at Genesis IC 1ST Foil Land from RightGuide Plus Turned Off

Waveform Taken at Genesis IC 2ND Foil Land from RightGuide Plus Turned On

Waveform Taken at Genesis IC 2ND Foil Land from RightGuide Plus Turned Off

Waveform Taken at Genesis IC 3RD Foil Land from RightGuide Plus Turned Off

Waveform Taken at Genesis IC 3RD Foil Land from RightGuide Plus Turned On