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The new 24" iMac has an H-IPS panel

wakerider017 said:
I think we can almost certainly say it is not TN b/c of the wide viewing angle...

178* is pretty damn wide!
Click to expand...

Yep, and the 24 inch is a far superior looking and performing screen! If the 24 inch screen used a tn panel, it would behave exactly like the 20 inch, which it clearly doesn't. Besides, I don't think anyone makes a tn panel that big!
 
suneohair said:
Maybe. Like I said. A new unknown TN could be in use.
Click to expand...

I think we can safely rule out TN. The display in the 24" iMac has none of the characteristics usually associated with TN panels: No color shifting. No inversion patterns. No dithering in the darks.

My guess is S-PVA or P-MVA, but I agree we won't know for sure until someone identifies the panel.
 
mrmjd said:
Yep, and the 24 inch is a far superior looking and performing screen! If the 24 inch screen used a tn panel, it would behave exactly like the 20 inch, which it clearly doesn't. Besides, I don't think anyone makes a tn panel that big!
Click to expand...

That is incorrect... There are 24" TN panels
 
Gosh said:
How do you think it compared to the 20" at the Apple Store?
Click to expand...
The 20" iMac looked just as bad as every other TN panel I've seen. The screen was like a gradient due to the poor viewing angles. The top was darker and the bottom was washed out. I could also see the dithering in dark colors, but it was very faint. I'm not a fan of TN panels. The link posted by theman has some good information about the various types of panels.

suneohair said:
Your title is hardly correct. There is zero evidence aside from you looking at the panel and giving you subjective review of it. You title is a statement of fact, a fact that has not been verified by anyone other than you. Even so, the best way to determine this is to take the 24" apart.
Click to expand...
The title is correct. The new 24" iMac has an H-IPS panel. Whether or not a statement has been verified has no effect on the validity of that statement. You can argue all the points you want, but that doesn't change what panel is already being used.
 
ToastyX said:
The 20" iMac looked just as bad as every other TN panel I've seen. The screen was like a gradient due to the poor viewing angles. The top was darker and the bottom was washed out. I could also see the dithering in dark colors, but it was very faint. I'm not a fan of TN panels. The link posted by theman has some good information about the various types of panels.


The title is correct. The new 24" iMac has an H-IPS panel. Whether or not a statement has been verified has no effect on the validity of that statement. You can argue all the points you want, but that doesn't change what panel is already being used.
Click to expand...

Come on... TN panels are not nearly as bad as you are making them out to be....

160* viewing angle vs 178*

Big deal for some, insignificant for most.

I would rather have an IPS panel... but I am not your average Mac User... :)
 
Looks like the OP was correct. The panel in the new 24" iMac is an LG LM240WU2. I just pulled the DDC info from mine using SwitchResX and got the following report:

Code: 
DDC block report generated by SwitchResX for display
iMac

      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
-----------------------------------------------------
0  | 00 FF FF FF FF FF FF 00 06 10 6C 9C 01 01 01 01
1  | 00 11 01 03 80 34 20 78 0A C7 74 A3 57 4A 9D 25
2  | 11 50 54 00 00 10 01 01 01 01 01 01 01 01 01 01
3  | 01 01 01 01 01 01 F0 3C 80 A0 70 B0 2D 40 30 20
4  | 36 00 06 44 11 00 00 1E 00 00 00 01 00 06 10 30
5  | 11 01 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6  | 4D 32 34 30 57 55 32 2D 53 4C 42 31 00 00 00 FC
7  | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 66

-----------------------------------------------------
	Valid DDC block: checksum passed

EDID Version........1.3
Manufacturer........APP
Product Code........27804 (6C9C) (9C6C) 
Serial Number.......16843009

Manufactured........Week 0 of year 2007
Max H Size..........52 cm
Max V Size..........32 cm
Gamma...............2.20

DPMS Supported Features:
------------------------ 


Display type:
------------- 
RGB color display


Input signal & sync:
-------------------- 
Digital  

Color info:
------------ 
Red x = 0.640  Green x = 0.290  Blue x = 0.146  White x = 0.313
Red y = 0.340  Green y = 0.616  Blue y = 0.069  White y = 0.328

Established Timings:
-------------------- 

Manufacturer Reserved Timings:
------------------------------ 
		Unknown timing 3

Standard Timing Identification:
------------------------------- 

Monitor Description blocks:
--------------------------- 
	Descriptor #0 is Timing definition:
	Mode = 1920 x 1200 @  60Hz
		Pixel Clock.............156.00 MHz			Non-Interlaced

		                        Horizontal			Vertical
		Active..................1920 pixels		1200 lines
		Front Porch.............  48 pixels		   3 lines
		Sync Width..............  32 pixels		   6 lines
		Back Porch..............  80 pixels		  36 lines
		Blanking................ 160 pixels		  45 lines
		Total...................2080 pixels		1245 lines
		Scan Rate............... 75.00 kHz			 60.24 Hz

		Image Size.............. 262 mm			 324 mm
		Border..................   0 pixels		   0 lines

			Sync: Digital separate with
				* Positive vertical polarity
				* Positive horizontal polarity

	Descriptor #1 is Manufacturer specific data (not interpreted here)

	Descriptor #2 is ASCII data:
			LM240WU2-SLB1
	Descriptor #3 is Monitor name:
			Color LCD
 
Alloye said:
Looks like the OP was correct. The panel in the new 24" iMac is an LG LM240WU2. I just pulled the DDC info from mine using SwitchResX and got the following report:

Code: 
DDC block report generated by SwitchResX for display
iMac

      0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
-----------------------------------------------------
0  | 00 FF FF FF FF FF FF 00 06 10 6C 9C 01 01 01 01
1  | 00 11 01 03 80 34 20 78 0A C7 74 A3 57 4A 9D 25
2  | 11 50 54 00 00 10 01 01 01 01 01 01 01 01 01 01
3  | 01 01 01 01 01 01 F0 3C 80 A0 70 B0 2D 40 30 20
4  | 36 00 06 44 11 00 00 1E 00 00 00 01 00 06 10 30
5  | 11 01 00 00 00 00 00 00 0A 20 00 00 00 FE 00 4C
6  | 4D 32 34 30 57 55 32 2D 53 4C 42 31 00 00 00 FC
7  | 00 43 6F 6C 6F 72 20 4C 43 44 0A 20 20 20 00 66

-----------------------------------------------------
	Valid DDC block: checksum passed

EDID Version........1.3
Manufacturer........APP
Product Code........27804 (6C9C) (9C6C) 
Serial Number.......16843009

Manufactured........Week 0 of year 2007
Max H Size..........52 cm
Max V Size..........32 cm
Gamma...............2.20

DPMS Supported Features:
------------------------ 


Display type:
------------- 
RGB color display


Input signal & sync:
-------------------- 
Digital  

Color info:
------------ 
Red x = 0.640  Green x = 0.290  Blue x = 0.146  White x = 0.313
Red y = 0.340  Green y = 0.616  Blue y = 0.069  White y = 0.328

Established Timings:
-------------------- 

Manufacturer Reserved Timings:
------------------------------ 
		Unknown timing 3

Standard Timing Identification:
------------------------------- 

Monitor Description blocks:
--------------------------- 
	Descriptor #0 is Timing definition:
	Mode = 1920 x 1200 @  60Hz
		Pixel Clock.............156.00 MHz			Non-Interlaced

		                        Horizontal			Vertical
		Active..................1920 pixels		1200 lines
		Front Porch.............  48 pixels		   3 lines
		Sync Width..............  32 pixels		   6 lines
		Back Porch..............  80 pixels		  36 lines
		Blanking................ 160 pixels		  45 lines
		Total...................2080 pixels		1245 lines
		Scan Rate............... 75.00 kHz			 60.24 Hz

		Image Size.............. 262 mm			 324 mm
		Border..................   0 pixels		   0 lines

			Sync: Digital separate with
				* Positive vertical polarity
				* Positive horizontal polarity

	Descriptor #1 is Manufacturer specific data (not interpreted here)

	Descriptor #2 is ASCII data:
			LM240WU2-SLB1
	Descriptor #3 is Monitor name:
			Color LCD
Click to expand...

Neat! So can anyone offer more details about H-IPS or the LM240WU2.

I am unfamiliar with both...
 
Kudos for finding that information.

H-IPS is just like S-IPS, except with an extra coating to reduce colour shift at angles - specifically on a black screen whereby a S-IPS panel would show a purple hue, I believe.
 
l33r0y said:
Kudos for finding that information.

H-IPS is just like S-IPS, except with an extra coating to reduce colour shift at angles - specifically on a black screen whereby a S-IPS panel would show a purple hue, I believe.
Click to expand...

Nice.

SO basically we have one of the best panels available :D
 
wakerider017 said:
Neat! So can anyone offer more details about H-IPS or the LM240WU2.
Click to expand...

I did some Googling and came up with the following info. It's from various sketchy sources, so I won't attest to its accuracy.

Panel Notes:
  • Same panel as NEC LCD2490WUXi.
  • TFT Central designates the LM240WU2 in the above monitor as H-IPS A-TW Pol.
  • Contrast Ratio: 800:1
  • Brightness: 400 cd/m2
  • Color: 8-bit, 16.7M
  • Response Time: 8ms (Gray-to-Gray)
Improvements of H-IPS over S-IPS:
  • Elimination of purple hues when viewed at an angle.
  • Reduced backlight bleed.
  • Reduced noise/glitter on panel surface.
That's about all I can find right now.
 
Here is some good info I found:

monitorsrc.com said:
Released sometime late last year was the H-IPS panel which is an evolution of the IPS panel which improves upon it’s predecessor, the S-IPS panel. The H-IPS panel can be seen in the NEC LCD2690WUXi and the Mitsubishi RDT261W 26″ LCD monitors.

LCD2690WUXi panel comparison

The LCD2690WUXi is a 26″ LCD aimed at professionals and has the newly developed H-IPS panel from LG. Philips. So how does the H-IPS improve upon the image quality of the S-IPS from the same company.
I’ll be comparing this with my sister’s Apple iMac G5 20.1″ LG S-IPS.

Photos taken from the front and the side.
Left: iMacG5 (S-IPS) and Right: LCD2690WUXi (H-IPS)

hips08.jpg

hips10.jpg


S-IPS panels have up until now had noticeable backlight bleed and in particular a feature characteristic of an S-IPS panel is that the panel turns purple when viewing from the side. We could see this clearly on the iMac. On the other hand, there is very minimal backlight bleed on the NEC. What’s particulary interesting is that the NEC blacklight bleed is greenish colour and is somewhat irregular in uniformity. You can see this on my NEC up the top and a little to the right. Surprisingly looking at it from the site, there is no backlight bleed.

So how do these characteristics effect the image?

From the front we can’t really see any differences but looked at from an angle the backlight bleed comes visible. Actually I’ve increased the brightness 2×4 times on the NEC as brightess falls when viewing at an angle so as to match the iMac.

The is talk now and then that the H-IPS panel has a narrower viewing angle than the S-IPS panel. This is just speculation but I think that this was a sacrifice made in order to get less backlight bleeding, colour change at an angle and black levels. Of course TN and VA panels still don’t even compare to this.

Another feature is that the panel surface has significantly less noise/roughness/glitter compared to S-IPS panels. This is perhaps just a change in the non-glare coating used.

There’s a definite improvement over the old S-IPS panel. There was a time when the quality of the S-IPS wasn’t as good and people compared it to the Samsung S-PVA panel, in particular the glitter effect which many people complained about. This is not an issue anymore with the H-IPS panel.

So to sum up, the pros/cons of the H-IPS over the S-IPS:

Pros:
Much less backlight bleed.
No purple hue visible at an angle
Backlight bleed improves looking at an angle
Less noise or glitter seen on the panel surface (smoother surface)

Cons:
Still some backlight bleed in areas that are green.
Viewing angles may have sacrificed in order to improve pros.
Click to expand...

More pics can be found here:

http://miyahan.com/me/report/computer/070125_WUXGA_LCD/LCD2690WUXi_5.html

Just scroll down past all the Japanese...
 
Fascinating thread! So let me ask you guys this.... if the 24" is an H-IPS afterall, does it make it more acceptible as a designer's computer now? If so, I'm buying one for home and convincing my boss to buy one for me at work too. :) The glare won't be a real issue for me since I seldom have any light behind me at all.
 
Great thread!!

I am unbelievably stoked!:D
Ordered - 24" iMac will ship Aug 22-24

WAHOO!!:D

"The title is correct. The new 24" iMac has an H-IPS panel. Whether or not a statement has been verified has no effect on the validity of that statement. You can argue all the points you want, but that doesn't change what panel is already being used."

Cool ToastyX for sticking to what you believe (even in the face of adversity).
Best regards to all!
 
Hi,
Wow, that was a rollercoaster of a thread for sure... :D

Good work by ToastyX and Alloye for their contribution to this thread and to the others for making it so interesting.

Another good reason to be pleased with my 24" iMac!!!
Cheers,
Craig.
 
sushi said:
If this is the same display, then Apple is getting a huge discount.

Wow!

Now if only they would offer a matte version.

And kudos to ToastyX for the initial info and Alloye for the supporting info! :)
Click to expand...

Oh yeah!! I'm sooo glad I did my research on these screens! It is clear that the screen in the 24 performs much better than the 20 inch, this is all good news!
 
What did the previous iMacs have out of interest if we are sure the new ones have TN and H-IPS for the 20 & 24" models?
 
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