imac 27 late 2009 lcd panel manufacturer

EEE code: 8P0,DTA, Apple part number: 661-5312, Compatible models: A1312-Late 2009-MB952LL, A1312-Late 2009-MB953LL, A1312-Late 2009-MB953LLCTO,, Compatible Mac info. : 27-inch 3.06GHz iMac , 27-inch 2.66GHz i5 iMac , 27-inch 2.8GHz i7 iMac, 661-5312 Panel, LCD Display, 27 inch - 27 inch Core2Duo - Intel i5 - i7 A1312 iMac Late 2009

Apple"s newly released Thunderbolt Display sports an LG display with the same model number found in the 27-inch iMac released in 2009, a teardown of the screen has found.

The new display, powered by Apple and Intel"s Thunderbolt technology, was disassembled this week by iFixit. They found that the LG display is model number "LM270WQ1," matching the previous iMac as well as the screen found in Dell"s competing UltraSharp U2711 27-inch monitor.

The solutions provider also noted that Apple"s screen has a 12 millisecond response time and 17.7 million colors, while Dell"s competing panel offers an advertised 6 millisecond response time and 1.07 billion colors.

iFixit found that the glass front of the new Thunderbolt Display can be removed with "heavy duty suction cups," just like with Apple"s iMac lineup. The LCD screen sports a resolution of 2,560-by-1,440 pixels.

Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI (adapters sold separately). 27-inch models also support input from external DisplayPort sources (adapters sold separately).

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Refurbished fully tested Genuine replacement iMac A1312 Screen LED Inverter Board for 27in System. Fully tested, refurbished original part clean pulled from A1312 late 2009 never repaired guaranteed with 3 months warranty.

What are the differences between the displays used in the Intel-based "Aluminum" and "White" iMac models? What is the viewable angle and the brightness of each?

When Apple introduced the original "Aluminum" iMac line on August 7, 2007, there was immediate outcry from some readers disappointed that the iMac "Core 2 Duo" 2.0 20-Inch (Al) and "Core 2 Duo" 2.4 20-Inch (Al) models had a lower-quality 6-bit "glossy" display with a reduced viewing angle compared to the 8-bit display in the 20-Inch "White" models that these systems replaced. Some disappointed customers went as far as filing suit against Apple over the issue.

Subsequently released 20-Inch and 24-Inch Aluminum iMac models use essentially the same display, but the 21.5-Inch and 27-Inch models use ones of better quality (and differing dimensions, naturally).

If you"re not sure which Aluminum iMac you have or need to identify prior to purchase, these models can be most readily identified externally via EMC number (located inconveniently under the "foot" supporting the computer) and in software by model identifier.

The "Late 2009" iMac models -- the iMac "Core 2 Duo" 3.06 21.5-Inch (Late 2009), "Core 2 Duo" 3.06 27-Inch (Late 2009), and "Core i5" 2.66 27-Inch (Late 2009) -- have "glossy" TFT active-matrix LED-backlit LCD displays with 1920x1080 and 2560x1440 native resolutions (21.5" and 27" respectively, 16:9). Both displays are 8-bit and use IPS (In-Plane Switching) technology, a considerable improvement for the 21.5-Inch configuration compared to the 20-Inch models replaced. However, it is worth noting that the 27" models are brighter than the 21.5" models (375 cd/m2 compared to 320 cd/m2).

The "Mid-2010" iMac models -- the iMac "Core i3" 3.06 21.5-Inch, "Core i3" 3.2 21.5-Inch, "Core i3" 3.2 27-Inch and "Core i5" 2.8 27-Inch -- have displays that are quite similar to those in the "Late 2009" line that they replaced. All are 8-bit "glossy" TFT active-matrix LED-backlit LCD displays with 1920x1080 or 2560x1440 native resolutions (16:9) and all use IPS technology too. The 27" models are even the same brightness (375 cd/m2), but the 21.5" models are slightly brighter than those replaced (330 cd/m2 compared to 320 cd/m2).

For the "Mid-2011" iMac models -- the iMac "Core i5" 2.5 21.5-Inch, "Core i5" 2.7 21.5-Inch, "Core i5" 2.7 27-Inch and "Core i5" 3.1 27-Inch -- Apple did not release official brightness information, but the company did reveal that these displays are the same size and have the same contrast ratio and viewable angle as the "Mid-2010" line. In its customary teardown iFixit confirmed that these models use the exact same displays as their predecessors, so it is safe to conclude that the brightness is the same as well.

The education-only "Late 2011" iMac model -- the iMac "Core i3" 3.1 21.5" Late 2011 -- also uses the same display as the "Mid-2011" models equipped with 21.5-Inch displays.

Display size, brightness, contrast ratio, and viewable angle is provided on each individual iMac specs page but to make comparison easier, this information on the stock models also is provided below in a chart:

‡ Please note that on August 7, 2007, Apple reported the brightness of the display in these systems in "nits" but quietly changed it a few days later to "cd/m2".

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"Nits" and "cd/m2" candela per square meter, but often reported as just "cd/m" -- are both effectively identical measures of luminance. On August 7, 2007, Apple published the brightness of the displays used by the original "Aluminum" iMac Core 2 Duo models in "nits" but quietly changed this a few days later to the previously used "cd/m2" standard. For more information, please refer to the Lighting Design Glossary.

Apple 661-5527 LM270WQ1(SD)(A2) 6091L-1050G LM270WQ1(SD)(A2) Apple 922-9833 Apple 922-9147 Apple 922-9469 Apple 922-9833 Apple 922-9147 Apple 922-9833 Apple 922-9833 Apple 810-3557 6091L-1050G LM270WQ1(SD)(A2) 6091L-1050G LM270WQ1(SD)(A2) Apple 805-9751 EMC 2309 Apple 661-5312

Apple EMC2309 LG 609IL-1050C LM27OWQ1 (SD) (A2) Apple 661-5527 LM270WQ1(SD)(A2) 6091L-1050G LM270WQ1(SD)(A2) Apple 922-9833 Apple 922-9147 Apple 922-9469 Apple 922-9833 Apple 922-9147 Apple 922-9833 Apple 922-9833 Apple 810-3557 6091L-1050G LM270WQ1(SD)(A2) 6091L-1050G LM270WQ1(SD)(A2) Apple 805-9751 EMC 2309 Apple 661-5312 LG 6091L-1050G