Modul LCD LED Training-Day1

8/18/2019 Modul LCD LED Training-Day1

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Dis la

Device

Trainin‐ LCD & LED

Beginner Level


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• •

• LED TV

• Response Time

• HCFL

• HDMI• SD

• HD

• CEC

• HDCP

• Full HD

• Backli ht

• DLNA

• Hotel Mode


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• What is LCD ?

– Liquid

Crystal Display

• What is LCD TV?

– Is a Display Device that using Liquid Crystal Display

technology with

florescent

lamp

as

a light

source

to

technology.

• What is LED TV?

– Is a Display Device that using Liquid Crystal Display technology with LED as a light source to display p cture nstea o us ng a t o e ay u e tec no ogy.


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BacklightPanel Module


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• CCFL

• HCFL

• LED

–

– RGB


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• What is CCFL? – Cold Cathode Florescent Lamp

– Is

a

lighting

system

that

uses

two

phenomena:

• electron discharge & fluorescence.

properties which include:

– good luminous

intensity,

– high density (compact and light weight),

– good color reproduction/uniformity,

–

,

– durability,

– quick start at low temperature,

– long lifetime and high efficiency


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• How it works?

– A CCFL lamp is constructed from a sealed glass tube with an electrode on each end.

– The

inside

surface

of

the

tube

is

coated

with

a

phosphor

material

and

filled

with inert

gases

such

as

argon

(Ar)

and

neon

(Ne)

mixed

with

a slight

amount (approx. 4mg Hg per lamp) of mercury vapor (Hg).

– , the electrical current to flow.

– When ionized, the gas emits ultraviolet light that is converted to visible light as

it

strikes

the

phosphor

coating

on

the

inside

surface

of

the

bulb.

– The color of the visible light depends on the type of the gas and phosphor used. The figure depicts the construction of the CCFL bulb.


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• Fluorescent lamps and cold cathode fluorescent lamps have extremely similar constructions,

but

they

use

different types of electron discharge.

• Fluorescent lamps discharge electrons

throu h

a material

called an emitter by heating electrodes, while CCFLs dischar e electrons without

heating by

using

electrode.

• This is due to the '

electrode


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• What is HCFL?

– Hot Cathode Florescent Lamp

• zes n erna amen s a mus e ea e y an

external current

prior

to

lighting

by

a ballast

device,

similar

to the common fluorescent light used in the home.

• In this device, a gaseous mixture flows between two tungsten electrodes or filaments.


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Cold cathode fluorescent lamps Hot cathode fluorescent lamps

Lamp diameter 1.8

to

5.0

mm 15

to

32

mm

Starting voltage High Low

Tube current Low High

Luminous efficacy Low High

Lifetime up to

60,000

hours 3,000

to

15,000

hours

Tube can be made thinner Highly efficient

Longer lifetime Greater volume of light


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• There are 2 type of LED backlight – Ed e LED : Normall use white LED as LED source

– Full Array

LED

: Can

be

RGB

LED

or

white

LED

• RGB LED backlights – Demand color mixing technology in order to

overcome unevenness of luminance.

– Color mixin

has si nificantl

im roved

with

an

increased understanding of the design and function of direct backlight concept

•

– relatively low power consumption and

– high NTSC gamut


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• Color gamut is the range of color a display can reproduce and is commonly expressed as a

percentage of

NTSC.

• Although NTSC stands for National ,

which developed television standards for North America, in this

instance,

100%

of

NTSC

refers

to t e u range o co or t at can theoretically be displayed.

• CRTs is about 70% of NTSC. A

luminance and

a high

‐percentage

color gamut should provide the best image‐ reproduction capa ty.


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‐

•

– HD

–

• What

is

the

different

of

each

type? – Native resolution

– HD : 1366 x 768

– Full HD :

1920

x 1080


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•

– is the

difference

between

light

(white color) and dark (black color)

on a screen, expressed by a

number.

– The ability of automatically change

the darkest color (black) to

minimum in

order

to

create

the

real

darker image on screen


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•

– Standard Definition

–

• What

is

HD

? – High Definition

– Frame size of 1280 x 720

• What is

Full

HD

?

– High Definition

– Frame size of 1920 x 1080


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• What is Response Time? – Is a time required for Liquid Crystal to switch from ON to OFF or OFF to

ON

– Lower

• – Picture will become blur during movement scene

• to

LCD

TV

that

sold

at

store?

– Because all the LCD manufacture manage to process the image until it complete before display to screen

– This will cause picture lagging


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•

– is a technic

to

create

a smoother

images

by

.

• What is the purpose of Motion Flow

– v u u y y

moving scenes

–

lagging.


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• JVC calls their 100 Hz + technology "Clear Motion Drive" and

"Clear Motion Drive II 100 120HZ".

• LG calls their 100 Hz + technology "TruMotion".

• Mitsubishi calls their 100 Hz + technology "Smooth120Hz".

• " Plus“ and “Motion Rate”

• Son calls their 100 Hz + technolo "Motionflow".

• Toshiba calls their 100 Hz + technology "Clear Frame".


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•

– High‐Definition

Multimedia

Interface

–

transmitting uncompressed digital data


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What is HDMI Cable ?

Video cable : To carry composite video signal.Be able to support video display resolution signal upto 480p

ca e : o carry sgna .Contain 3 video cable. Every cable carry Y signal, R-Y signal and B-Y signal

Be able to su ort video dis la resolution si nal uto 1080i

HDMI cable : Be able to carry all type of video & audiosignal.

Be able to support video display resolution signal up


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What is advantage of HDMI

• ua ty: – Because HDMI is a digital interface, it provides the best quality of the

video since there are no loss analogue to digital conversions as arerequired for all analogue connections (such as component or S-video).

e erence s espec a y no cea e a g er reso u ons suc as

1080p.

• Ease-of-use: – HDMI combines video and multi-channel audio into a single cable,

• Intelligence: – -

(such as a DVD player) and the DTV,

– enabling new functionality such as automatic configuration and one-touch play.

• HD Content-Ready: – HDMI devices supporting HDCP have the comfort of knowing they will

have access to premium HD content now and in the future.


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HDMI with CEC

What is CEC ?

CEC : Customer Electronics Control

The channel:

Uses the industry standard AV LINK protocol

Used for remote control functions.. - .

This feature is used in two ways:

To allow the user to command and control multiple CEC-enabled boxes with one remote control.

To allow individual CEC-enabled boxes to command and control each other without user

.


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Back Ground of CEC

1 remote can

everything

Too many

remote

is a feature that enablesconnected devices to control

HDMI CEC is a upgraded version

each other over one wire.

of controlling multiple HDMI

devices


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HDMI with CEC

Pin 1 TMDS Data2

CEC

Pin 3 TMDS Data2

Pin 4 TMDS Data1Pin 5 TMDS Data1 Shield

Pin 6 TMDS Data1

Pin 7 TMDS Data0

Pin 8 TMDS Data0 Shield

Pin 9 TMDS Data0

Pin 10TMDS Clock

Pin 11 TMDS Clock Shield

Pin 12 TMDS Clock

Pin 13 CEC

Pin 14 Reserved (N.C. on device)

Pin 15 SCL

n

Pin 17 DDC/CEC GroundPin 18 +5 V Power

Pin 19 Hot Plug Detect


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HDMI with CEC

Does other manufactures support this CEC features?

■ All of the major TV makers support it, but they all call it

something different.

nyne +

TOSHIBA CE-LinkPANASONIC

EZ-Link

LG

SimpleLink


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HDMI with CEC

HDMI contains basic and enhanced features.

All the features added since version 1.1 are optional.

ere ore a g er vers on oes necessar y

mean enhanced features.


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HDMI with CEC


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HDCP – High-Bandwidth Digital Content Protection

-HDCP is a form of digital rights management developed by Intel to

control digital audio and video content as it travels across DVI or

HDMI connections.

-HDCP is proprietary and an implementation of HDCP requires a

license.

-In addition to paying fees, licensees agree to limit the capabilities

of their products. High-definition digital video content is restricted

- . -

is restricted to DAT quality on non-HDCP digital audio outputs

(analog audio outputs have no quality limits).


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HDCP – High-Bandwidth Digital Content Protection

-Licensees cannot allow their devices to make copies o content,

and must design their products to “effectively frustrate attempts todefeat the content protection requirements.”

-HDCP’s main target is to prevent transmission of non-encryptedhigh definition content. 3 systems were developed to achieve that

goal:

1. Authentication process disallows non-genuine devices toreceive HD content.

2. Encryption of the actual data sent over DVI or HDMI preventdropping of info.

.agreement easily been blocked from receiving HD data.


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DLNA – Digital Living Network Alliance

-

electronics, mobile and personal computer industries.

- It aim is to align the companies and have industry standards,which will allow products from all companies to be compatiblewith each other and to enable a network of electronic devices

in the home.

- In this way, consumers will be able to enjoy digital living easilyand seamlessly. Companies, under the alliance will still be ableto innovate and differentiate their own products.

- Some of the industry’s leaders, including Motorola, Philips,Samsung, Matsushita, Hewlett-Packard, Sony, Microsoft, Intel

, . ,however DLNA certification is available now.


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•

• Life time

• Comparison screen size CRT vs LCD

Note :

LCD6 : KDL

‐40EX520


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• What is Video Resolution ? – usually used to mean pixel dimensions, the number of

pixels in

each

dimension

(e.g.,

1366

x 768)

– Com are to CRT TV LCD have fix native ixel.

– If LCD display low resolution picture or video, it will automatically zoom the image or video to full fill the panel

size.

– And this will cause bad impact to picture quality.

• Video resolution for TV –

– 576i or 576p

– 720i or 720p

– 1080i or 1080p


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Modul LCD LED Training-Day1

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