LG pixelhiba politika

3 napon belül az LG minden pixelhibára (akár egyetlen alpixelre is cseréli az LCD monitorjait!

3 nap után az alábbi garancia érvényes:
Az LG nem enged meg főpixel-hibát, teljes pixelhibánál (ami három alpixelből áll) a monitor cserére jogosult. 1 teljes pixel, (főpixel) hibája egy nagy, 0,2mm nagyságú hibás képpontot hoz létre a képernyőn. Nagyító alatt ilyenkor látszik, hogy mindhárom alképpont működésképtelen.

Mivel a főpixel-hibás monitorok rendkívül ritkák és cserére jogosultak, az LG hibás pixelre vonatkozó leírásai alpixelekben megfogalmazottak.

1 pixel 3 alpixelből áll: vörösből, zöldből, kékből. Az alpixelek ezen kombinációja biztosíja azt a teljes színtartományt, ami a képernyőn mint 1 főképpont (főpixel) kerül kijelzésre.
A következőkben megfogalmazott pixel-hiba kritérium szigorúbb, mint a vonatkozó ISO előírások (ISO 13406-2, class 2).

Képernyő méret	Alpixelek száma	Megengedett hibás alpixelszám
15"	2 359 296	2
17"	3 932 160	2
18.1"	3 932 160	2
19"	3 932 160	2
20.1"	6 144 000	2
23" és felette	6 912 000	2

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Samsung LCD-monitorok pixelhiba-irányelve

Képernyő méret	Megengedett hibás alpixelszám
15"	7-nél kevesebb
17" és 19"	10-nél kevesebb
21" és 24"	17-nél kevesebb

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Acer LCD-monitorok pixelhiba-irányelve

Az LCD-monitorok TFT-kijelzőjén esetlegesen előforduló pixelhibák nem minősülnek garanciális hibának, csak egyes, kirívó esetekben.

A korlátozott jótállás nem terjed ki az LCD technológiával készült monitorok kisebb hibáira. Az adott LCD kijelzőn egymillió képpontonként négy (4) hibás képpont, illetve (a kijelzőpanelt kilenc (9) egyenlő négyszögletes területre osztva) a kijelző középső részén legfeljebb egyetlen hibás képpont még elfogadható hibának minősül.

A középen található zöld terület a kijelző középső része, ahol legfeljebb egy hibás képpont lehet.

"The Limited Warranty does not extend to minor defects of LCD displays occurring in Products equipped with LCD display technology provided that there shall not be more than four (4) defective pixels per million pixels on a given LCD Display, and provided further that, if the display panel is divided into nine (9) equal rectangular areas, there shall be one defective pixel in the central area of the display."

Képernyő méret	Összes pixelszám
640x480x3	921 600
800x600x3	1 440 000
1024x768x3	2 359 296
1280x1024x3	3 932 160
1400x1050x3	4 410 000

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Hibás képpontokra vonatkozó irányelvek

A PDÁ-k LCD-kijelzőjének fényes és sötét hibás képpontjaira vonatkozó irányelv szerint az alábbiak még elfogadható hibának minősülnek. Amennyiben az LCD-kijelzőn a lent meghatározottnál kevesebb hibás képpont található, az LCD-kijelzőt nem cseréljük:

• fényes képpont: 3 vagy annál kevesebb
• sötét képpont: 3 vagy annál kevesebb
• teljes képpont: 3 vagy annál kevesebb

Feltéve, hogy az LCD-kijelző középső szektorában nincs hibás képpont.

Az úgynevezett „Newton ring" effektus (szivárványhatás, amit a képpontok egyenletlen nagysága okoz) esetenként megengedett - a helyzetétől, a Newton ring méretétől, illetve attól függően, hogy mennyire látszik.

I. A képponthiba:
A képponthiba a képpont területének a hibája, amelynek nagysága a képpont területének több, mint 50%-a A képpont kis, fényes hibája az RGB színek valamelyikének a hibája, melynek nagysága a képpont területének kisebb, mint a fele
II. Két sötét képponthiba vagy két fényes képponthiba közötti távolságnak 3 mm-nél nagyobbnak kell lennie.
III. A fényes és sötét kapcsolt képponthibák a következők:
két pár két képpontból álló kapcsolt, fényes képponthiba még elfogadható két pár két képpontból álló kapcsolt, sötét képponthiba még elfogadható két kapcsolt, fényes, hibás képpont két fényes, hibás képpontnak tekintendő két kapcsolt, sötét, hibás képpont két sötét, hibás képpontnak tekintendő három kapcsolt, fényes, hibás képpont nem elfogadható három kapcsolt, sötét, hibás képpont nem elfogadható egy fényes és egy sötét képpont kapcsolata egy fényes és egy sötét, hibás képpontnak tekintendő

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Dell Notebook és LCD-monitor pixelhiba-irányelve

Definition of the Quality Standards for Dell Flat-Panel Monitors and Laptop LCD Screens

Journal ID:	08182J3NQD
Article ID:	150023
Date Published	6/9/2008
Last Revised	6/26/2008

LCD Display Pixel Policy

During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state. The visible result is a fixed pixel that appears as an extremely tiny dark or bright discolored dot. When the pixel remains permanently lit, it is known as a "bright dot." When the pixel remains black, it is known as a "dark dot."

In almost every case, these fixed pixels are hard to see and do not detract from display quality or usability. A display with 1 to 5 bright or dark dots is considered normal and within competitive standards.

Dell LCD Replacement Policy

Your LCD display is subject to replacement if it meets the criteria outlined in the following table:

	Bright Dots	Dark Dots	Total Dots
Dell UltraSharp™ Monitors (with Premium Panel Guarantee)	1 or more	6 or more	Bright = 1 or more Dark = 6 or more
All Other Dell Monitors	6 or more	6 or more	Combination of Bright and Dark = 6 or more
Laptop LCD screens on: Dell Precision™ Mobile Workstations Dell Latitude™ laptops Dell XPS™ laptops Dell Vostro™ laptops (with Premium Panel Guarantee)	1 or more	6 or more	Bright = 1 or more Dark = 6 or more
Laptop LCD screens on: Dell Inspiron™ laptops Dell Vostro laptops	6 or more	6 or more	Combination of Bright and Dark = 6 or more

Premium Panel Guarantee for UltraSharp™ Monitors

The Premium Panel Guarantee is available for UltraSharp monitors sold with systems or as stand alone units, and is included with Dell's standard 3-year Limited Warranty1. Customers who purchase a 4th or 5th year extended Limited Warranty can also take advantage of this coverage for the duration of the Limited Warranty period.

UltraSharp monitors bought at Best Buy, while covered by the Premium Panel Guarantee, must be exchanged at a Best Buy store.

¹For copy of limited warranty, write Dell USA L.P., Attn: Warranties, One Dell Way, Round Rock, TX 78682 or visit www.dell.com/warranty.

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ASUSTeK LCD Monitor Warranty Policy

ASUSTeK Computer INC. warrants that this product has been manufactured, tested, and inspected to comply with industry specifications. ASUSTeK will provide warranty coverage without charge if the purchased product is proven defective in material and workmanship under normal use within the warranty period, from the date of purchase from ASUSTeK or its authorized reseller. The proof of purchase must be presented to the ASUSTeK's service centre for any warranty claims.

If the product fails during normal and proper use within the warranty period, Asustek will, at its discretion, repair or replace the defective parts within the product, or the product itself, with items that are functionally equivalent to that as originally supplied, or better, during the warranty period defined for the model, using new or refurbished parts or units. All components repaired or replaced by ASUSTeK's Service Centre will be under warranty for the remaining period of warranty, or for no less than 3 months.

Please keep the original packaging, in case that your product needs to be returned for repair. Original packaging provides a better protection for your product during transportation.

If the product is not packaged in its original box, ASUS will not be liable for any damages occurred during transit. If the product is under warranty, the ownership of the replaced defective parts will automatically be transferred to ASUS.

WARRANTY COVERAGE:

• 3 years Australia-wide Onsite Pick Up Warranty
• 1 year panel ZBD (Zero Bright Dot) guarantee for PW191, PW201, LS201, MW221C, VW193T, PG221H, VW193T, VW192C & other Premium LCDs
• 7 days ZBD (Zero Bright Dot) guarantee for all other LCDs (Dark dots are excluded from this guarantee)

Warranty procedure for LCD monitors:

If product is faulty within the warranty period, to return the LCD monitor for warranty, please contact ASUS on 1300 2787 88 for initial phone support and troubleshooting. If genuine problem exists, ASUS will issue a RMA (return authority number) for returning the product to the ASUS service centre.

• The LCD can be dropped in to the ASUS service centre location Monday to Friday 9am to 6pm (AUST EST) except public holidays
• Pickup and return service will be organized by ASUS using designated freight carrier. Before sending the product back. RMA number must be clearly marked outside of the original packaging with the service centre address provided. Product will be returned without notice if the RMA number is not visible upon receiving the product
• ASUS is not responsible for any damage or loss in transit by the freight carrier
• If full packaging is not provided, ASUS may charge for the packing to return the product

DOA Policy for LCD monitors:

ASUS will regard the LCD to be “Dead on Arrival (DOA)” if it does not “power on” or operate to the specifications and standards as per the manual or bears physical manufactured damage within the first 7 calendar days after purchase. Such a product must be presented back to the ASUS Reseller within the same period with all the accessories and its original packaging. The Reseller will then check if the unit is complete and perform an initial, check-up.

• Reseller to call ASUS on 1300 2787 88 for initial phone support and troubleshooting, Monday to Friday 9am to 6pm(EST)
• If a genuine problem exists, ASUS issue a RMA (return authority number) for returning the product. This number is a return authority number only until it has been assessed and approved by ASUS as a valid DOA claim
• For Courier pick-up, Reseller is to fill in the ASUS DOA REQUEST FORM provided by ASUS and should include Distributor Invoice copy and End-User Invoice copy to send back with the DOA LCD
• ASUS will arrange the product to be picked up using ASUS's designated freight carrier. Reseller should clearly mark the RMA No. and ASUS Service Centre Address outside of the original box before sending back to ASUS
• Allow a 3 to 5 working days for diagnostics at ASUS Service Centre
• If “No Fault Found” or a genuine problem does not exist, ASUS will inform Reseller and will arrange to send back at end-user's expense and a diagnostic fee may apply
• If DOA is approved, ASUS will inform Reseller with written DOA notification via email and endeavor to replace with buffer stock. If no buffer stock available, ASUS will organize for replacement/ credit back via the Distributor

Note:

• Failure by Reseller to comply with paperwork requested will result in delay to execute the DOA process
• IASUS is not responsible for any damage or loss in transit by courier
• If full packaging is not provided, the job will be processed as regular RMA, provided the product is within warranty conditions
• An ASUS LCD will not be considered DOA or faulty if the PC/Notebook/ output device does not support the correct display output resolution of the LCD
• After 7 Days, Regular RMA process will apply
• All Zero Bright Dot (ZBD) Pixel defects will only have Panel replaced
• Please check the exact Pixel Policy for DOA requirements for Pixel failure as listed below
• The warranty extends only to the original purchaser and is not transferable

WARRANTY EXCLUSIONS for DOA/ RMA:

The customer bears the cost of repair / freight for the following:

• Damaged parts or components not sold or manufactured by ASUSTeK
• Parts repaired or replaced by parties other than ASUSTeK authorized service centers
• There is damage caused by an external electrical fault, accident, natural disaster, intentional or accidental misuse, abuse, neglect or improper maintenance, or use under abnormal conditions
• There is damaged caused by improper installation or improper connection to the display device
• Units purchased outside the service coverage region
• No Fault found and other excluded circumstances
• Warranty also ceases if damaged by: use for which it is not designed/ accidents/ misuse / incorrect voltage

THIS LIMITED WARRANTY DOES NOT APPLY TO: (“EXCLUDED CIRCUMSTANCES”)

• Removed, revised, defaced, or damaged warranty seals and/or original factory serial numbers
• Damage resulting from improper installation, including, but not limited to, incorrect or insufficient electric power supply (Refer to the user's guide for proper installation procedures and power supply requirements.)
• Defects resulting from long-term improper use
• Damage (including cosmetic damage such as scratches, spots, or dents), failure, loss, or personal injury due to misuse, abuse, negligence, improper maintenance and storage, or acts of nature
• Damage incurred while being transported or moved by the customer
• Damage resulting from virus infection or installation of illegal software

Register your product online at http://www.asus.com. The information you provide will benefit you in receiving updated ASUStek product information.

IMPORTANT INFORMATION

PIXEL FUNCTIONALITY:

Your LCD contains more than one million individual pixels. Sometimes, a number of these pixels do not function normally. Your LCD has been inspected and found to comply with the manufacturer's

DEFECTIVE DOT POLICY:

A pixel (picture element) consists of sub-pixels: one red, one green, and one blue dot. A transistor drives each dot. When a transistor becomes defective, the corresponding dot may become permanently bright or dark.

A Bright dot is a white or sub-pixel that is always on under BLACK pattern. A Dark dot is a black or sub-pixel that is always off under any pattern.

A Bright dot is a white or sub-pixel that is always on under BLACK pattern. A Dark dot is a black or sub-pixel that is always off under any pattern.

PERIOD	Bright Dot	Dark Dot
Up to 12 months for PW191, PW201, LS201, MW221C, VW193T, PG221H, VW192C and other ZBD Premium LCDs	> 0	> 5
Up to 36 months	> 3	> 5
Up to 7 Days for all other LCDs	> 0	Not applicable

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Toshiba Notebook pixelhiba-irányelve

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EIZO pixelhiba-irányelve

ISO 13406-2 is the new International Standard with ergonomic requirements for the image quality of flat panel displays. ISO 13406-2 is the equivalent to ISO 9241-3/7/8 for cathode ray tubes.

ISO 13406-2 covers the following key issues:

• display luminance
• contrast
• reflections
• colours
• luminance and colour uniformity
• font analysis
• pixel faults
• flicker

Substantial characteristic of flat panel display is the angle of view dependent luminance / colour distribution. Therefore the measurements take place in a spherical coordinate system Q,F:

For this kind of evaluation a particularly efficient measuring technique is necessary, which has been set up in the ergonomics laboratory of TÜV Rheinland Product Safety in Cologne. A new optical measuring technique was employed in order to meet increased requirements in terms of the measuring accuracy.

If a user looks perpendicularly on the center of the flat panel display, then he sees the corners of the picture under different angles Q,F:

The existing measuring technique makes it possible to measure the luminance / colour under practically every viewing angle Q,F. The following figure shows the darkroom contrast distribution of a modern 15" LC display:

NEW ISO STANDARD 13406-2 FOR FLAT PANEL DISPLAYS

The measurements take place after an analysis of the luminance distribution on the screen within several measurement locations:

Similarly to ISO 9241-7 in ISO 13406-2 also the reflection characteristics are examined. The goal is an acceptable image quality in lit office environment. Due to the optical characteristics (anisotropy) of the flat panel display the identification of image quality is substantially more complex. A flat panel display can be divided into the following classes:

Class	Environment
I	suitable for general office use
II	suitable for most, but not all, office environments
III	requiring a specially controlled luminous environment for use

In order to qualify for the mark ERGONOMICS APPROVED the flat panel display shall meet the requirements for class I and/or at least the class II.

The high-quality conoscopic measuring system within the ergonomics laboratory of TUV Rheinland Product Safety in Cologne allows comprehensive determination of the reflection characteristics employing the measurement of the BRDF (Bidirectional Reflection Distribution Function).

Also pixel faults are being identified. A flat panel display should not have pixel faults, i.e. fault class I. According to ISO 13406- further fault classes with the following number of faults are specified. Types 1, 2 or 3 differentiate pixels, which always illuminated, never illuminated or e.g. contain subpixel faults:

Fault Class	Type-1	Type-2	Type-3
I	0	0	0
II	2	2	5
III	5	15	50
IV	50	150	500

Test mark

The test mark ERGONOMICS APPROVED and ECO CIRCLE 2000 for flat panel displays integrate ISO 13406-2 from January 2000. The ergonomics laboratory of TUV Rheinland Product Safety Cologne is accreditated by DEKITZ for test and certification of flat panel displays to ISO 13406-2.

For further details please contact:

Stephan Scheuer (scheuer@tuv.com)
Hans-Jürgen Herrmann (herrman@de.tuv.com)
TÜV Rheinland Product Safety, 51105 Cologne
Tel. +49 / (0) 221 806 1654
Fax +49 / (0) 221 806 3480

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Ajánljuk figyelmébe notebook ( laptop ) és LCD-TFT kínálatunkat

• Notebook ( laptop ) Árlista
• Monitor ( TFT, LCD ) Árlista