What is a B+RG LED?

So the XPS 17 uses this panel?

Thanks

 

No. He meant the previous Studio 17... There was a B+RG LED FHD option for it too. I doubt XPS 17 uses the same panel since there's only 1600x900 at the moment.

 

O I C

Thanks!

 

If anyone is still interest I believe I have found out what a B+RG LED actually is. Since an led only generates a single color there are no true "white" leds since white is composed of red,green and blue (rgb). There are several methods of generating white light with leds. First you can use a combination of a red, green and blue leds such as as in the rgbled display on the Studio xps 15. The second method is the so called "white" led. It is actually a blue led covered with a phosphor that when excited by the blue light gives off white light just like a florescent lamp. If you have ever had a cheap led flashlight you can see some of the blue leaking through. Finally we have the B+RGled in the new dell XPS full HD display. This is an actual technology and not Dell marketing hype. It is a mixture of the previous 2 technologies. It starts with a blue led to provide the blue light in rgb. Some of this same blue light is also used to excite red and green phosphors similar to the white led. This results in all three colors (rgb) that produce white light. The following link gives some details.
White light-emitting diode composed of primary colours | New Materials Asia | Find Articles at BNET AUO - LED

The one article talks about a color gamut that is 91% of the NTSC rgb gamut which I believe is wider the Adobe RGB which is wider then sRGB.

For those XPS 15 enthusiasts here is a good review including measurements of the Full HD display.

Dell XPS L501x: An Excellent Mainstream Notebook - AnandTech :: Your Source for Hardware Analysis and News

The measured color gamut is 98.3% of the Adobe RGB gamut. It also compares it to the Studio XPS with the rgbled which measured 118.2. Both were better then all the rest of the laptops it was compared against


I hope this helps.

 

This

and

are the same thing.

Blue LED + yellow (yellow = R+G) phosphor = white light

WLED = B+RG

 

I have one of the first Studio 17s (1737) with the RGB LED screen and I also have the M1730. Although the Studio 17 has a beautiful picture the M1730 picture looks better to me with the Samsung panel. It is a non LED type panel but it is beautiful.

 

Hey guys, first I'd like to say thanks for a very informational thread. I think that the topic being discussed here is a pretty commonly misunderstood aspect of LCD screens in general, be it for televisions or for computer monitors. I think we are getting to the point where the slightly above average consumer understand there are several different ways to produce lit pixels from an LCD screen and the various ways of doing it and the advantages / disadvantages of each (specifically CCFL, vs LCD edge lit, vs LCD backlit, vs LCD backlit with local dimming)

Anyhow, back to the topic... I happen to currently be in possession of both a Dell Studio 1737 with the 1080p B+RG LED backlit screen, as well as a new Dell Studio 1747 also with the "same" 1080p B+RG LED backlit screen.

Upon booting up the Studio 1747 I could almost immediately tell the screen wasn't actually the same, so I started doing research and found myself reading this thread.

The main differences I can see between the two screens are that the 1747's screen is slightly brighter, slightly cooler color temp, and seems to have slightly less contrast. It also seems brighter around the edges than in the middle of the screen. The one negative I noticed on the 1737 that I don't see on the 1747 is that occasionally on very small (one pixel width fonts) you can see a slight red/blue coloring behind a black font on a white background. Overall I prefer the screen on the 1737.

Finally, I found this URL that is a banding test for an LCD's color output and I found that on the 1737 it is perfectly smooth, while on the 1747 I could see steps of color.

Single-page version


Now the real mystery is what screens are actually in each one of these laptops! I was told one way to confirm is by looking at the Dell Support pages and looking at the original equipment list (after putting in the Dell Service Code). I am at the office now but will post the screen details from each one when I get home today.

Anyone else want me to check anything since I have both "versions" of the Dell B+RG screen that I can setup next to each other?

 

Studio 1745 has a AUO149D for B+RG LED panel.

Here's how to find what screen(s) you have:

 

Studio 1737 B+RG (1920 x 1200) Hardware ID: LGD01B3
Studio 1747 B+RG (1920 x 1080) Hardware ID: AU0149D

I'm kind of disappointed I can't get the same smooth gradient on the AU0149D @ http://www.lagom.nl/lcd-test/gradient.php as I can on the LGD01B3, but other than that both displays are pretty good.

 

Though quality for all LCD manufacturers vary greatly between models, LG panels are generally great, AUO is a mixed bag, and Samsung is generally poor (though they did make the SXPS16 RGBLED).

Keep in mind that Dell will use several manufacturers for the same model laptop (i.e. the Studio 1747 may have 1080p B+RG displays from either LG or AUO, and which one you get is more or less random).

 

This is of slight concern for the few of us waiting for a Sandy Bridge XPS 15. Will the 1080p screen still be as good then as it is now? Ok, ok, I'm probably the only person concerned

 

I don't think the RGB LED screen had individual red, green, and blue LEDs but instead tri-color LEDs. Then, the combo blue and red/green LEDs you suggested would be the cheaper option to manufacture. As you said, it would be a less expensive upgrade, especially considering the extremely (relatively) small number of people who would order this config. I don't think it's deceptive marketing unless they would have said something like "modified RGB LED". They put the color gamut out there for everyone to see.

 

There is no such thing as a tri-color LED (unless you mean a WLED, as Red+Blue+Green = white). A LED can only emit one color of light at a time. The RGBLED did have individual Red, Blue, and Green LEDs. The B+RG only has WLEDs.

 

My XPS 15 came with the AUO17ED according to the HardwareID in the Display control panel.

 

dumb question.

How I calibrate my screen?

 

You need to buy a colorimeter, like the EyeOne (~$150 to 250 depending on the options) or Spyder3 (~$75 - 200). The EyeOne is more consistent, but they should both work fine for non-professional/critical applications. If you're looking to be a designer/ graphic artist/ pro photographer, there are much more expensive solutions available (in the $thousands). All the calibration profiles I made for the XPS16 in my other thread were done with they EyeOne.

 

do you think that customers who purchased a Computer with a B+RG display should bring a lawsuit against Dell?

Dell - Help Me Choose: LCD Displays

WLED = 1 white-colored light diode
B+RG LED = 3 individual light diodes: R, G, B

the only question here is that why they call it B+RG to distinguish it from RGBLed, I guess that it's different control circuits.

do not try to play down B+RG just for your imagination: what you have is as good as the newer one.

it seems that all arguments should be over. as we see, B+RG is even better than something what we guessed before.

 

Seems like their engineering department and marketing department have communication issues.

 

hilarious, WLED doesn't actually have white LED's... And B+RGled is just Wled whit diferent color phosphors.

 

I had just received my New XPS 15. I specifically ordered the better display, B+RG LED FHD screen. The first time I turned on the notebook, I was shocked that the display was yellowish for a white background. I immediately called Dell Technical Support and the answer I got was this is the new B+RG LED is meant to be yellowish. I could not look at the screen for more than 5 minutes as it was too yellowish and is hurting my eyes. The solution that was given to me was to downgrade the screen to the 15.6" HD (1366x768) WLED display with TrueLife. I find this solution hilarious and ridiculous.

Anyone else with the same problem as mine? Anyone has a clue how to solve my yellowish screen problem? Dell actually got their technician to replace the screen for me, but it still turned out to be yellowish. So their next option is to downgrade it to the non FHD screen.

Previously I owned a Studio XPS 16 with RGB LED FHD screen and I am very pleased with the display. Truly disappointed with the new XPS 15.

 

Every screen has minor imperfections, some worse than others. For example, my screen is way too blue.
A good solution is to calibrate the display by hand, an usefull site for this is LCD monitor test images

 

I had the same problem. Had to return an original purchase for a different reason (but was very happy with the display), and the exchange I got was with this yellowish tint. The colors were as vibrant, but ~less bright. (?) Had to cancel my order all together. Yesterday, I asked the sales rep. and he said the B+RG displays they have now are 200 nits. Does it have anything to do with this? Am really interested in this.

 

So in short, B+RG is cheaper to make but it also ends up being a better alternative because of higher Colour Gamut?

 

Don't know about cheaper or CG, but I was really hesitant about replacing my Studio XPS because of the outstanding RGBLED display, but now that I'm able to do a side by side comparison of it with my XPS 15's B+RGLED there is only one conclusion... the XPS 15's display is a leap forward. The whiter whites, blacker blacks and better brightness range of the XPS 15 simply embarasses the SXPS 16 and HD photos/videos just pop off the screen so much better.

 

Also, I will likely be comparing my Precision M4400's RGBLED display to an XPS 15's B+RGLED display soon, since I have a friend who's probably getting an XPS 15.

 

B+RG is pretty simple and, probably cheap to make. Though WLED will still be cheaper as it uses only one type of fosfor, b+RG has two.

Overall i say B+RGled is a better technique than RGBled. Not because it is better, but because of decreased costs and power efficienty: RGBLED is super expensive and eats battery life. About double the power usage of wLED.

 

I have been looking my whole life for someone to have both SXPS 16 RGB and XPS 15 B+RG LED screens. Although there is a video in youtube comparing these two laptops, the SXPS 16 is only WLED, which makes the comparison unfair.
Please post comparison pictures, here or in a new thread, between these two laptops screens.
Even better, post this as video.

Much appreciated.

you too.. Can't wait.
Do compare and show it through pictures or video, please.

 

I tried taking some pics with a friend's digital camera but I guess it auto corrects something and I couldn't see a difference. I even took compare pics between them and his "el cheapo" netbook and couldn't see a difference in the pics. I fail at photography.

 

Try your best.
I always wanted to see the difference between the RGBLED and B+RGLED.
If pictures doesn't work well, try video.