19 Inch TFT
Color Monitor
Operating Instructions
© 2006
All rights reserved.
This manual is protected by Copyright.
The Copyright is owned by Medion®.
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MS-DOS
Pentium
Other trademarks are the property of their respective owners.
Medion
not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Medion
ance, or use of this material.
Medion
This document contains proprietary information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Medion
The information in this document is subject to change without notice.
®
and Windows® are registered trademarks of Microsoft®.
®
is a registered trademark of Intel®.
®
makes no warranty of any kind with regard to this material, including, but
®
shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, perform-
®
assumes no responsibility for the use or reliability of its software on equipment that is not furnished by Medion®.
®
.
Contents:
Notes on these instructions............................................................................................ 1
Our Target Group .......................................................................................................... 1
Quality....................................................................................................................... 1
Service ...................................................................................................................... 1
Purpose of use................................................................................................................ 1
Included Equipment ....................................................................................................... 1
Safety Instructions......................................................................................................... 2
Operating Safety ........................................................................................................... 2
Setting up location......................................................................................................... 2
Repair..........................................................................................................................3
Intended Environment.................................................................................................... 3
Power Supply ................................................................................................................ 3
Standards/Electro-Magnetic Compatibility .........................................................................4
FCC Compliance Statement........................................................................................... 5
Declaration of Conformity ............................................................................................. 5
Start-Up ......................................................................................................................... 6
Preparations on Your Computer ....................................................................................... 6
Supported Monitor Settings .......................................................................................... 6
Display Properties ....................................................................................................... 6
Fixing the Monitor base ..................................................................................................8
Connecting the Monitor................................................................................................... 8
n Connecting VGA / DVI Signal Cable ............................................................................ 8
o Connecting Audio Cable ............................................................................................ 8
p Connecting the Power Supply.....................................................................................9
Positioning of the Monitor ............................................................................................... 9
Your posture............................................................................................................... 9
Controls........................................................................................................................11
Setting the TFT Monitor ................................................................................................ 12
OSD Menu .................................................................................................................. 12
Saving Energy............................................................................................................. 14
Service .........................................................................................................................15
Troubleshooting........................................................................................................... 15
Localize the Cause..................................................................................................... 15
Check Connections and Cables .................................................................................... 15
Errors And Possible Causes ......................................................................................... 15
Do you require additional support ?................................................................................ 16
Maintenance ................................................................................................................. 17
Recycling...................................................................................................................... 17
Specifications ............................................................................................................... 17
Guarantee .................................................................................................................... 18
Pixel Defects on TFTs ................................................................................................... 18
Liability limitations....................................................................................................... 20
Copying this manual .................................................................................................... 20
ii
Notes on these instructions
Please read through these Instructions carefully and pay attention to all the listed information. You
will ensure the reliable operation and a long life expectancy of your TFT monitor in this way. Always
keep these Instructions monitor ready to hand, near to your TFT. Keep the Instructions for Operation well, in order to be able to pass them on to the new owner if you sell the TFT monitor.
We have arranged these instructions so that you can quickly find the subject related information in
the table of contents. The purpose of these instructions is helping you operate your TFT display
safely, quickly and easily.
Our Target Group
These instructions are intended for initial users as well as advanced users. Regardless of the possible
professional utilization, this display is intended for private use only.
Quality
We focused on great features, ease of use and reliability in manufacturing your TFT monitor. The
balanced hardware and software concept offers you an advanced display design which will provide
you a great deal of pleasure for your work and entertainment.
We are pleased to welcome you as our newest customer. Thank you for choosing our company.
Service
Service and support will be available every time you use your new TFT Display. Contact us, we will
be glad to help. This manual contains a separate chapter on the subject of service beginning on
page 15.
Purpose of use
This device is only suitable for using in dry, internal rooms. This TFT display is intended for personal use only. It not intended for commercial use in a heavy industry environment. Use under
extreme environmental conditions can result in damage to your device.
Included Equipment
Please check your new TFT Display for completeness. Notify us within 14 days after purchase if it
is not complete. With your TFT monitor you receive:
• TFT screen
• Connection cable
• DVI cable
• 15-wired Sub-D cable
• Audio cable
• Monitor base
• Guarantee card
• CD with operating instructions and drivers
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Safety Instructions
Operating Safety
• Do not allow children to play unattended on electrical equipment. Children may not always
correctly recognize danger.
• Never open the housing of the TFT monitor (electric shock, short-circuit and the danger of
fire)!
• Do not insert any objects through the slots and openings into the inside of the TFT (electrical
shock, short-circuit and the danger of fire)!
• Slots and openings in the TFT monitor are for ventilation purpose. Do not cover these openings,
as otherwise this may lead to overheating (overheating, danger of fire)!
• This TFT monitor is not intended for commercial use in a heavy industry environment.
• An injury hazard exists when the display breaks. Wear protective gloves to pack the broken
parts and send them into your service center for proper disposal. Then wash your hands with
soap, because it is possible for chemicals to escape.
• Never exert pressure on the display. This could break the monitor.
• Do not touch the display with your fingers or with sharp objects to avoid damage.
Contact Customer Services, if:
• the power cord is burnt or damaged
• fluids have leaked into the monitor
• the TFT monitor does not work properly
• the TFT display is dropped or the housing damaged
Setting up location
• In the first hours of operation, new devices may emit a typical, unavoidable but completely
harmless smell, which will decline increasingly in the course of time.
We recommend you to ventilate the room regularly, in order to counteract the formation of the
smell. During the development of this product, we have made sure that the applicable limits
are clearly fallen below.
• Keep your TFT monitor and all units connected to it away from moisture and avoid dust, heat
and direct sunlight. Failure to observe these instructions can lead to malfunctions or damage to
the TFT monitor.
• Do not operate your device in the open air, because external influences, such as rain, snow,
etc. could damage the device.
• Do not place any containers filled with liquid (vases or similar containers) on the device.
The container could tip over and liquid can impair electrical safety.
• Do not place any open sources of fire (candles or similar objects) on the device.
• Pay attention to sufficiently large clearances in the wall cupboard. Maintain a minimum
clearance of 10 cm around the device for sufficient ventilation.
• Place and operate all units on a stable, level and vibration-free surface in order to avoid
the TFT monitor from falling.
• Avoid dazzle, reflections, extreme light/dark contrast in order to save your eyes and
ensure a pleasant, ergonometric work station.
• Take regulator breaks when working with your TFT monitor in order to avoid tension and
fatigue.
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Repair
• Leave all repairs of your TFT monitor to authorized and qualified personnel only.
• Should a repair be necessary, please contact one of our authorized service partners only.
Intended Environment
• The TFT monitor can be operated at an ambient temperatures of between +41°F and +95°F
(5° C to 35° C) and at a relative humidity of between 20% and 85% (without condensation).
• When switched off, the monitor can be stored at between -4°F and +140°F (-20° C - +60° C).
• After transporting your TFT monitor please wait until it has assumed the ambient temperature
before connecting and switching it on. Extremely high variations in the temperature or humidity may result in condensation forming on the inside of the TFT monitor which could cause
an electrical short-circuit.
Power Supply
Please pay attention: Pats of the device are still live, even if the mains switch is switched
off. Pull the mains plug out of the socket, to interrupt the power supply to your TFT
monitor or to release the device from voltage completely.
• Operate your TFT monitor mains (power supply) only on grounded sockets with AC 100-240V~/
50-60 Hz. If you are not sure about the power supply at your location, check with your power com-
pany.
• For additional safety we recommend use of an excessive voltage protection device to protect
your TFT monitor from damage resulting from voltage surges or lightning.
• To interrupt the TFT monitor from mains (power supply) disconnect the plug from the socket.
• To avoid power consumption when the device is switched off either pull out the power plug
when the device is not used or connect the device to a master-/slave power bar.
• The power socket must be in the vicinity of your TFT monitor and within reach of the power
cables.
• If you use an extension cable, ensure that it fulfills the VDE requirements. Please ask your
electrician.
• You should lay the TFT monitor cables in a manner that no one can trip or step on it.
• To avoid damage of cable do not place any objects or furniture on the cable.
• Your device has an On and Off switch. The TFT monitor can be switched on or off by means of
it. No electricity is consumed if the switch is at OFF (0).
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Standards/Electro-Magnetic Compatibility
Your monitor fulfils the requirements for electro-magnetic compatibility and electrical safety specified in the following standards:
EN 55022 Information technology equipment - Radio disturbance characteristics - Limits
and methods of measurement.
EN 55024 Information technology equipment - Immunity characteristics - Limits and meth-
ods of measurement.
EN 60950 Safety of information technology equipment.
• When connecting ensure that Guidelines for Electro-Magnetic Compatibility (EMC) are ob-
served.
• Provide an interval of at least one meter from high-frequency and magnetic sources of in-
terference (television sets, loudspeakers, mobile telephones, etc.) in order to avoid malfunc-
tions and data loss.
• The failure of individual or groups of luminous points can arise in rare cases, in spite of the
most up-to-date manufacture, because of the highly complex technology.
Your device corresponds to the ISO 13406-2 Class II (Pixel Error Class) European Norm (see page 18).
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FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate the equipment. Shielded interface cables, if any, must be used in order
to comply with the emission limits.
Declaration of Conformity
According to 47CFR, Parts 2 and 15 for
Class B Personal Computers:
We: Medion Aktiengesellschaft____________
(Name of the Responsible Party)
Located at: Gänsemarkt 16 – 18_________________
D-45127 Essen_____________________
Germany__________________________
(Address, City, State, Zip Code)
Fax : 0 201 / 81 081 – 227____
(Facsimile Number for conformity issues only
Declare under sole responsibility that the product identified herein, complies with 47CFR Parts 2 and 15 of the FCC rules as a
Class B digital device. Each product marketed, is identical to the representative unit tested and found to be compliant with
the standards. Records maintained continue to reflect the equipment being produced can be expected to be within the variation accepted, due to quantity production and testing on a statistical basis as required by 47CFR §2.909. Operation is subject
to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any
interference received, including interference that may cause undesired operation. The above named party is responsible for
ensuring that the equipment complies with the standards of 47CFR §§15.101 to 15.109.
Trade Name: Medion
Type or
Model Number: MD 30519 PA
Party Responsible: MEDION AG
Executed on (Date), at (Place): 20
h
of April, 2006, Essen
)
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Start-Up
Note
Before start-up always read the Chapter “Safety Instructions” on page 2.
Preparations on Your Computer
If you have operated your computer previously with a CRT monitor, it will be necessary for you to
make a few preparations. This is required when your previous monitor was operated with settings
which are not supported by your new TFT monitor.
Supported Monitor Settings
This TFT monitor supports the following modes:
Resolution Horizontal Frequency Vertical Frequency
720 x 400 31.47 KHz 70 Hz
640 x 480 31.47 KHz 60 Hz
640 x 480 37.86 KHz 72.8 Hz
640 x 480 37.5 KHz 75 Hz
800 x 600 37.88 KHz 60.3 Hz
800 x 600 48.08 KHz 72.2 Hz
800 x 600 46.87 KHz 75 Hz
1024 x 768 48.36 KHz 60 Hz
1024 x 768 56.48 KHz 70.1 Hz
1024 x 768 60.02 KHz 75 Hz
1280 x 1024* 63.98 KHz 60.02 Hz
1280 x 1024 80.00 KHz 75 Hz
*recommended physical resolution)
Check the setting of your video controller by means of ‘Display Characteristics’ under
9X/ME/2000/XP.
Display Properties
This Windows program offers you the possibility of adapting the display to your monitor. This includes
items such as the background image, the screen saver, the Active Desktop (Web) as well as other settings for your monitor and video card.
The program can be started as follows:
• Right mouse click on Windows desk top and left mouse click on "Properties".
Or
• Start the "Display" program in "System control“.
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(similar picture)
The resolution can be set under “Screen resolution” (n).Your monitor can display a maximum of
1280 x 1024 image dots.
This resolution corresponds to the physical resolution. TFT monitors achieve complete image quality
at the physical resolution.
Under „Color quality“ (o) you can set the depth (number of colors displayed). Your monitor supports a maximum color depth of 16 million colors corresponding to 32 bit or "True Color“.
The image repeat frequency can be set under "Advanced“(p).
A window with the characteristics of your video card appears depending on the configuration of your
computer.
Under „Adapter“ you can change the desired value in
the selection field „List All Modes“.
The optimum value lies at 60 Hz in the case of a TFT monitor.
The maximum level that can be set is 75 Hz.
(similar picture)
Caution!
If your setting does not coincide with the values supported by your display, you may not
see any image.
Switch your old device on again and set the applicable values under ‘Display Character-
istics’ in accordance with the aforementioned options in this case.
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Fixing the Monitor base
p
Mount the monitor stand as shown in the diagram. Perform this step before connecting the monitor.
(similar picture)
Connecting the Monitor
To start using the TFT monitor straight away, please read the “Safety Instructions” section (page 2).
We recommend that you also read all the other sections as these contain detailed explanations and
tips on how to use your TFT display.
n
Power supply
1. Ensure that the TFT monitor is not yet connected to the line power (power cord not yet
plugged in) and neither the TFT monitor nor the computer is switched on.
2. Prepare your computer for the TFT monitor if necessary (see previous pages) with the correct settings for your TFT.
D-SUB
n
DVI
(similar picture)
Audio
n Connecting VGA / DVI Signal Cable
3. Plug the signal cable into the matching VGA sockets on the computer and on the monitor. If
your PC also has a DVI output, you can connect your monitor by means of the DVI connector.
o Connecting Audio Cable
4. Plug the audio cable into the matching sockets on the computer and on the monitor.
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p Connecting the Power Supply
5. Plug the power supply cable into the power supply socket of the TFT screen and plug the electric plug into a socket close to the TFT screen (same circuit).
6. Your monitor has an ON/OFF switch at the rear side, by means of which you can switch the
monitor on or off, on the back. If the switch is set to 0, then no power is consumed. Set the
switch to I and next switch your monitor on using the on/off switch.
7. Then switch on your computer.
Positioning of the Monitor
Please ensure that the monitor is set up in such a way that that reflections, glare and light-dark contrast are avoided (as this will make the screen less attractive to look at)
Your posture
Sitting in one position for long periods can be uncomfortable. To minimize the potential for physical
discomfort or injury, it's important that you maintain proper posture.
Back - While sitting at your work surface, make sure your back is supported by the chair's backrest
in an erect position or angled slightly backwards.
Arms - Your arms should be relaxed and loose, elbows close to your sides, with forearms and hands
approximately parallel to the floor.
Wrists - Your wrists should be as straight as possible while using the keyboard, mouse or trackball.
They should not be bent sideways, or more than 10 degrees up or down.
Head - Your head should be upright or tilted slightly forward. Avoid working with your head or trunk
twisted.
Legs - Your thighs should be horizontal or angled slightly downward. Your lower legs should be near
a right angle to your thighs. Your feet should rest flat on the floor. If necessary, use a footrest, but
double check that you have your seat height adjusted correctly before getting a footrest.
Overall - Change your position frequently and take regular breaks to avoid fatigue.
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• Hand’s support rest: 2” – 4”
• Top line of screen should keep eye’s level or be a little beneath
• Eye’s distance to screen: 20” – 28”
• Legroom (vertical): at least 26”
• Legroom (horizontal): at least 24”
(similar picture)
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Controls
1 2 2 3 4 5
No. Function Description
1 Menu/Enter
When this key is pressed the OSD (ON screen display) starts on your
TFT monitor Confirm you selection by pressing this key.
2 Down
When OSD is active this key sets a parameter value and decreases it.
Decrease volume
2 Up
Executing it directly lowers the volume.
When OSD is active this key sets a parameter value and increases it.
Increase volume
3 Auto
4 Power
5 Operation indicator
Executing it directly raises the volume.
With this key you can automatically adjust the image.
With this switch you can switch the TFT monitor ON and OFF.
Indicates the operating state.
Blue = Normal mode,
Orange = Stand-by mode
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Setting the TFT Monitor
You can set certain parameters for the TFT monitor on the OSD menu (ON screen display).
OSD Menu
(On screen display, all pictures similar)
(similar picture)
Press the menu key to activate the OSD.
1. Select the options from the main menu with the function selection keys 2.
2. Press the menu key to confirm.
3. Select the options from the sub-menu with the function selection keys 2.
4. Press the menu key to confirm.
5. Set the desired value with the function selection keys 2.
The main functions and adjustment possibilities using the OSD are explained hereafter.
Note
The setting possibilities for the TFT monitor lead only to marginal changes due to this
technology.
Symbol Parameter
Adjust the overall image and background screen brightness.
Adjust the image contrast in relation to the background.
To move the picture image horizontally left or right.
To move the picture image vertically up or down.
To increase or decrease the horizontal size of image.
To improve focus clarity and image stability.
Brightness
Contrast
Horizontal position
Vertical position
Horizontal Size
Phase
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Symbol Parameter
Color select
To adjust color temperature.
Note
You can adjust the response time of your screen here. The submenu
contains the options "Fast", which is meant for fast games and video
sequences. This setting has an impact on brightness, contrast and color settings. But you also can change the settings manually or reset
them to the initial values using (Reset).
Opening
For switching between DVI and VGA when using both connections.
Reset
Reset the currently highlighted control of the factory setting.
Language
Language selection of OSD.
OSD
Exit
H. Position
V. Position
To exit the OSD.
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Saving Energy
This monitor can be switched into various states of energy saving by the respective computer or
operating system. This meets the current requirements for reduction of power consumption.
The monitor supports the following states of low energy consumption:
Status
ON
OFF
Power Consumption Colour of the indicator Standby mode (approx.)
< 48 W
< 5 W
Blue
Orange
2 seconds
The monitor remains – depending on the operating system – in the state of low power consumption,
until you press a button of the keyboard or move the mouse (if available).
It takes approx. 2 seconds for the monitor to switch from standby mode to normal operation.
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Service
Troubleshooting
If your TFT monitor should have problems please check if it is properly installed and plugged according to the information given in the “Start-Up” section beginning on page 6). If the problems cannot
be solved, read the following chapter for possible solution.
Localize the Cause
Errors can have simple causes, but sometimes they are caused by faulty equipment. We would like
to give you some tips to help solve common problems. Should these instructions not lead to success, please feel free to contact us.
Check Connections and Cables
Start by carefully checking all cable connections visually. If the indicator lamps do not function, ensure
that the TFT monitor and computer are properly connected to the line power.
Errors And Possible Causes
No display on screen.
Check:
• Network supply: The network cable must rest securely in the socket and the network switch
must be switched on.
• Signal source: Please check that the source of the signal (computer, or other source) is
switched on and that the connecting cables are resting securely in the sockets.
• Image refresh frequency: The current image refresh frequency must be suitable for the TFT
monitor.
• Power saving mode: Press any desired key and move the mouse to deactivate the mode.
• Screensaver: Press a key on the keyboard or move the mouse if the screensaver of the com-
puter is activated.
• Signal cable pins: If pins are bent, please contact your service dealer.
• Set the appropriate values for your TFT monitor (see "Preparations on your computer", page 6).
Picture runs or not stable.
Check:
• Signal cable pins: If pins are bent, please contact your service dealer.
• Signal cable pins: The plugs of the signal cable must rest securely in the sockets.
• Video card: Check whether the settings are correct.
• Image refresh frequencies: Select permissible values for your graphic settings.
• Monitor output signal: The monitor output signal of the computers must match the technical
data of the monitor.
• Remove any interfering equipment (portable telephones, loudspeakers, etc.) from the
vicinity of your TFT monitor.
• Avoid using monitor extension cables.
Characters displayed dark, picture too small, too large or not centered, etc.
• Readjust the corresponding settings (setting TFT monitor, page 12).
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Colors not displayed cleanly:
• Check the signal cable pins. If pins are bent, please contact your service dealer.
• Readjust the corresponding settings.
• Avoid using monitor extension cables.
The display is too light or too dark:
• Check that the video output level of the computer matches the technical data of the monitor.
• Select Auto Setup, to optimize the settings for brightness and contrast. The display should
show a text page (e.g. Explorer, Word, etc.), to optimize it.
The picture trembles.
• Check that the operating voltage corresponds to the technical data of the monitor.
• Select Auto Setup, to optimize the settings for brightness and contrast. The display should
show a text page (e.g. Explorer, Word, etc.), to optimize it.
Do you require additional support ?
If the suggestions in the above section have not solved your problem, please contact the hotline. We will
try and help you over the telephone. However, before you contact your Technology Center, please keep
the following information available:
• How is your computer configured?
• What additional peripherals do you use?
• What messages, if any, appear on your screen?
• What software were you using when the error occurred?
• What steps have you already undertaken to solve the problem?
• If you have already been given a customer number, please keep this available.
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Maintenance
Following these measures can extend the lifetime of your TFT monitor:
Attention!
There are no user-serviceable or user-cleanable parts inside the monitor housing.
• Before cleaning, always remove the power adapter plug and all connecting cables.
• Do not use any solvents, corrosive or gaseous cleaning agents .
• Only use a damp, lint-free cloth to clean the monitor.
• Make sure that no water drops are allowed to remain on the screen. Water can cause perma-
nent discoloration.
• Do not expose the screen to bright sunlight or ultraviolet radiation.
• Please keep the packaging material safely and use it exclusively to transport the monitor.
Recycling
Packaging
Your device is packaged to protect it against damage during transportation. The packaging
is manufactured from materials that can be sent to a specialist recycling facility and disposed of in an environmentally-friendly way.
Device
At the end of its life, the appliance must not be disposed of in household rubbish. Enquire
about the options for environmentally-friendly disposal.
Specifications
• Visible display size 19” (48.2 cm), TFT
• Input voltage AC 100-240 V ~ 50/60 Hz
Nominal current 1.2 A
Power consumption max. 48 W
Resolution 1280 x 1024
•
2
• Brightness 250 cd/m
• Contrast 500:1 (typ.)
• Viewing angle horizontal 85°/85° (typ.)
vertical 85°/85° (typ.)
RGB input, digital DVI-D connector
•
•
RGB input, analog 5-wired SUB-D connector
•
User control ON/OFF, OSD
• Dimensions (W x H x D) 426 mm x 429 mm x 194 mm
• Temperatures
• Humidity
(without condensation)
• Loudspeaker (optional) 2 x 1 W
Operating +41°F ~ +95°F (+5° C ~ +35°C)
Storage -4°F ~ +140°F (-20° C ~ +60°C)
Operating < 80%
Storage < 95%
(typ.)
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Guarantee
The receipt serves as proof of first purchase and should be kept in a safe place. It is required should
you need to make use of the guarantee.
If the product is passed onto another user, then he shall be entitled to guarantee services for the
remaining period of the guarantee. The receipt of purchase as well as this declaration should be
passed onto the new user.
We guarantee that this equipment is in perfect working order and from a technical point of view it
complies with the descriptions in the enclosed documentation. Upon production of the receipt, the
remaining period of guarantee shall pass on from the original parts to the respective replacement
parts. If you hand in this equipment to make use of the guarantee, you must remove all programs,
data and removable storage media. Products which are sent without accessories will be replaced
without accessories. The warranty obligation does not apply in the case of the problem being caused
by an accident, a catastrophe, vandalism, misuse, incorrect use, ignoring the safety and maintenance regulations, changes by software, viruses or another piece of equipment or accessories or by
other modifications not approved by ourselves. This limited guarantee declaration replaces all other
guarantees of express or implied nature. This includes the guarantee of saleability or the suitability
for a certain purpose but is not limited to this. In some countries the exclusion of implied guarantees
is not permissible upon principle. In this case the validity of all express and implied guarantees is
limited to the guarantee period. Once this period has expired, all guarantees become invalid. In
some countries limiting the period of validity for implied guarantees is not permitted, so that the
above limitation does not come into force. If you have any questions with regard to these guarantee
conditions, please contact us.
Pixel Defects on TFTs
Active matrix TFTs with a resolution of 1280 x 1024 Pixeln (SXGA), which are in turn composed of
three sub-pixels each (red, green, blue), contain about 2.4 million addressable transistors. Because
of this very high number of transistors and their extremely complex production process occasionally
defective or incorrectly addressed pixels or sub-pixels may occur.
There have been several attempts in the past to define the acceptable number of defective pixels.
But this can be difficult and varies widely between different manufacturers. MEDION, therefore, adheres to the clear and strict requirements of ISO 13406-2, class II, for the warranty handling of
all TFT display products. These requirements are summarized below.
Within ISO-standard 13406-2 the general requirements
regarding pixel defects are defined. Pixel defects are classified
into three failure types and four failure classes. Each individual
pixel is made up of three sub-pixels in the primary colors
(red, green, blue).
Rows
Blue
Green
Red
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Types of Pixel Failures:
• Type 1:
A constantly lit pixel (a bright, white spot), even though it is not addressed. A white pixel is
caused when all three sub-pixel are lit.
• Type 2:
A pixel that does not light up (dark, black spot), although it is addressed.
• Type 3:
Abnormal or defective red, green or blue sub-pixels.
(E.g. constantly lit with half the brightness, one color is not shining, blinking or flickering, but
not belonging to Type 1 or 2 Pixel Failures).
In addition: A cluster of type 3 (= 2 or more defective sub-pixels in an array of 5 x 5 pixel).
A cluster is an array of 5
x 5 pixel (15 x 5 sub-pixel).
Classes of Pixel Failures:
Failure class Type 1 Type 2 Type 3 Cluster of type 3
I 0 0 0 - 0
II 2 2 5 - 2
III 5 15 50 5
IV 50 150 500 50
The acceptable number of defects of the above mentioned types in each failure class refers to one
million pixels and has to be calculated according the physical resolution of the display.
This leads to a maximum allowed number in class II type failure:
For a resolution Mill. Pixel SubPixel (Type s.above)
1024 x 768 (15") 0.786432 2.359296 2 2 4 - 2
1280 x 1024 (17,18, 19") 1.310720 3.932160 3 3 7 - 3
1600 x 1200 (19“) 1.920000 5.760000 4 4 10 - 4
Class I type failure only applies to special applications, e.g. medical applications, and results in corresponding price increases. Class II type failure is the established standard for quality conscious
manufacturers with high quality displays.
Example 1 :
A 15” - XGA-display consists of 1024 horizontal and 768 vertical picture dots (pixel), which amounts
to a total of 786,432 pixel. Related to one million pixels this translates into a factor of about 0.8.
Class II type failure consequently allows for two defects each of type 1 and type 2 and 4 defects of
type 3 and 2 clusters of type 3.
Example 2:
A 17” - SXGA-display consists of 1280 horizontal and 1024 vertical picture dots (pixel), which
amounts to a total of 1,31 million pixels. Based on one million pixels this translates into a factor of
about 1.31.
Class II type failure consequently allows for three defects each of type 1 and type 2 and 7 defects of
type 3 and 3 cluster of type 3.
These cases are normally not covered by warranty. If the number of failures exceeds the figures of
any category mentioned above then this may be covered by the warranty.
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