TailChao Posted March 25, 2007 Share Posted March 25, 2007 As we all know, the Lynx LCD is plagued with loads of problems. It blurs, it's too washed out, the viewing angle is lousy, blah blah blah. However two of these problems can be easily remedied, and one of them really isn't all that severe (Especially compared to say, a Game Gear). I was recently taking apart an LCD from a Thinkpad 600 which needed a new backlight. Incidentally, I found out that it would be cheaper to replace the whole panel than just buy a new tube, so I decided to play with the parts. Two of them were particularly interesting: On the left is a diffusion filter, the right, a polarizing filter. These are in most semi-modern/modern laptop LCDs in order to provide even lighting. The polarizing filter sends all of the light in a single direction, and the diffusion filter softens the light from the polarizing filter. Obviously, these filters are too large to just lay over the LCD, so we have to cut them into Lynx-sized squares. Testing the filters: The left image is under a high-light condition, the right is under normal Lynx-playing light. In both, the left side of the LCD is unfiltered, while the right is. Things are looking much richer already, however we have one problem... There are streaky lines on the LCD from our polarizing filters! We need something to get rid of those... Luckily, (or hopefully) we still have the diffusion plastic around from earlier. Let's make some squares of those and put them with the polarizing filters. I used a layering scheme of Polarizing->Diffusion->Polarizing->Diffusion, this seemed to work best for me. If you do this, experiment with different orders, etc. Also, don't use your laptop as a workbench . All we have to do now is put the Lynx back together.... And we're done! Now our colors look like actual colors! (And yes, my LED is red) Shame Atari didn't do this during manufacturing, it improves viewing greatly. Also, it's a bit easier to see the screen in bright light or when outside. -TC Quote Link to comment Share on other sites More sharing options...
per Posted March 25, 2007 Share Posted March 25, 2007 (edited) There is a problem with the LCD on my Lynx II: It looks like there are some pixels in the upper left courner where parts of the filter is missing, causing some colors to be stronger than other on the affected pixels. It is hard to see, but if you turn the backlit low, you can see it easier. Is this a common problem? Edited March 25, 2007 by per Quote Link to comment Share on other sites More sharing options...
TailChao Posted March 25, 2007 Author Share Posted March 25, 2007 There is a problem with the LCD on my Lynx II: It looks like there are some pixels in the upper left courner where parts of the filter is missing, causing some colors to be stronger than other on the affected pixels. It is hard to see, but if you turn the backlit low, you can see it easier. Is this a common problem? Are you talking about the filter adhered to the back of the LCD (The "square bump") or the diffuser plate (the big hunk of plastic)? Either way, it would probably be easiest to order a defective Lynx and use the LCD or diffuser plate from that. I think I'm on my 3rd LCD . Quote Link to comment Share on other sites More sharing options...
per Posted March 25, 2007 Share Posted March 25, 2007 (edited) It is problably on the filter adhered on the LCD, because the colors are brighter, if it was on the diffuser plate, it would look like the colors was dimmer. I can take a picture of it as soon as possible. Edited March 25, 2007 by per Quote Link to comment Share on other sites More sharing options...
per Posted March 25, 2007 Share Posted March 25, 2007 (edited) Here is the picture. The backlit is turned as low as it gets without being off, an you can clearly see the extra bright fields on the affected pixels. The black spots above the screen, and the little outstanding red light on the left side is reflections of the camera, so don't worry about them . Edited March 25, 2007 by per Quote Link to comment Share on other sites More sharing options...
TailChao Posted March 25, 2007 Author Share Posted March 25, 2007 Here is the picture. The backlit is turned as low as it gets without being off, an you can clearly see the extra bright fields on the affected pixels. The black spots above the screen, and the little outstanding red light on the left side is reflections of the camera, so don't worry about them . It looks like the back of your LCD is scratched and the light is not being bent properly. I would just replace the LCD if it's too annoying, but it doesn't seem to be that bad. Quote Link to comment Share on other sites More sharing options...
per Posted March 25, 2007 Share Posted March 25, 2007 It is REALY hard to see if I turn up the backlit to where I can see a normal picture, so I don't think I need to change the LCD, but thanks for defining what was wrong . Quote Link to comment Share on other sites More sharing options...
+karri Posted March 26, 2007 Share Posted March 26, 2007 This was a very nice article. As I have a broken HP laptop screen at home I just have to see if it was using some nice filters that could be reused on a Lynx. I also discussed this topic with some Nokia engineers when the Sony PSP came out. Sony was using standard LCD's but still the colors were much better than anyone expected. The magic could be in the filtering after the LCD. -- Karri Quote Link to comment Share on other sites More sharing options...
per Posted March 26, 2007 Share Posted March 26, 2007 Are you in the Nokia developement team? Nokia was very famous in Norway a coupple of years ago. Quote Link to comment Share on other sites More sharing options...
+karri Posted March 26, 2007 Share Posted March 26, 2007 Are you in the Nokia developement team? Nokia was very famous in Norway a coupple of years ago. Fortunately no. Most engineers get swallowed by Nokia when they graduate as the company is so huge. I love small companies with more freedom. Actually I applied for a job once at Nokia but when I was in the interview I suddenly realized that the company is not for me and chickened out in the middle of the interview. But I have _lots_ of friends there and sometimes we talk about things like "why is the colors on my Sony PSP so much better than on my phone". I keep changing companies once every 5 years or so. Life is more interesting that way. -- Regards, Karri Quote Link to comment Share on other sites More sharing options...
CGQuarterly Posted March 28, 2007 Share Posted March 28, 2007 Does it have to be a laptop screen, or will any LCD screen work? I can get my hands on a broken flat panel monitor for a very good price, but not so much on a broken laptop. Is there any way to just buy this stuff? Chris Quote Link to comment Share on other sites More sharing options...
TailChao Posted March 28, 2007 Author Share Posted March 28, 2007 Does it have to be a laptop screen, or will any LCD screen work? I can get my hands on a broken flat panel monitor for a very good price, but not so much on a broken laptop. Is there any way to just buy this stuff? Chris I would assume that most modern backlit TFT LCDs would be suitable, so a flat panel monitor could probably be salvaged. However, note that some manufacturers fuse the filters on to the back of the screen, you'll rarely see this though, probably doesn't hurt to try if you can get the broken display panel for cheap. I believe you can buy sheets of polarizing filters, but unfortunately I haven't seen them for sale in ages. I've never seen a diffusion filter for sale in sheet form, so I guess the LCD is the best bet. Good luck! Quote Link to comment Share on other sites More sharing options...
+karri Posted April 1, 2007 Share Posted April 1, 2007 I also modded my Lynx with a new filter pack. The HP Omnibook had 4 sheets between the light source and the Lynx. I actually removed the original plastic white piece and replaced it with the filter pack. The filter seems to make dark colors darker as can be seen on the top right corner where the filter is. But the result is still very bright. And the black is just a shade of gray. Is it worth it? Don't know. Time will tell. -- Thanks for the idea, Karri Quote Link to comment Share on other sites More sharing options...
+karri Posted April 1, 2007 Share Posted April 1, 2007 (edited) Here is also a picture of how bright the screen still is in the assembled Lynx. The resulting colors for a more complex game entry look a bit too bright. At least compared to my Sony PSP screen. Here is also a picture of the resulting LCD sandwich: The LCD display itself is also polarized. But the plastic under the LCD has no optical specialities. And don't even try this mod if you are afraid of breaking your Lynx. I had lots of problems myself and had to replace a component to get life in it again. -- Karri Edited April 1, 2007 by karri Quote Link to comment Share on other sites More sharing options...
+karri Posted April 1, 2007 Share Posted April 1, 2007 Now in the morning I tried the new filtered display in daylight. Enjoy The blueish tint is mostly gone and the display looks nice. -- Karri Quote Link to comment Share on other sites More sharing options...
+karri Posted April 1, 2007 Share Posted April 1, 2007 I also did a few tests with some tricky screenshots. Here is the Songbird logo. It has an almost visible bird on top of the logo. You can see it with some settings of the wheel. I also include one image with lots of black. The Yahzee (High Roller). And the last picture is from Pastel Spirits from Japan. A cute card game. Now the resolution is much better in these pictures so you can see what the colors look like on a filtered Lynx LCD. Oh, and all these screenshots are from MegaPak vol1 that should be available soon. -- Karri Quote Link to comment Share on other sites More sharing options...
TailChao Posted April 3, 2007 Author Share Posted April 3, 2007 Nice work on your mod Karri, the high resolution pictures look quite good. I definitely have to highlight the fragility of the Lynx II hardware here though, although it might be somewhat durable on the outside it really isn't that nice to work with on the interior. My current LCD actually has a tear through two of the pins simply because of the inconvenience of its placement (yet it still works, weird). I've found that things look best under mid-high light conditions, I usually test my work under a desklamp or outside to make sure everything is clearly visible. Perhaps the biggest thing we need to do is find a more appropriate lighting source for the LCD. LED mods are constantly brought up, and I might as well try one myself. Really, the whole LCD assembly should be replaced in that case since using the reflector plate with LEDs is a bit pointless. The blacks will probably always look a bit gray unless we do something about the LCD itself, which is a bit difficult. At least we can get a bit more contrast with the polarizing filters though. Quote Link to comment Share on other sites More sharing options...
Beetle Posted October 10, 2007 Share Posted October 10, 2007 Hi, anything new here? I'd like to improve my Lynx's display, too. Replacing the original light source with white LEDs might also be energy saving and therefore lenghten your Lynx fun on batteries. Quote Link to comment Share on other sites More sharing options...
pixeljunkie Posted November 26, 2007 Share Posted November 26, 2007 also want to bump this, any new developments? It would be soooo great if someone could crack the code on this. Quote Link to comment Share on other sites More sharing options...
ziggystar Posted June 27, 2009 Share Posted June 27, 2009 also want to bump this, any new developments? It would be soooo great if someone could crack the code on this. How about 2 years later? Quote Link to comment Share on other sites More sharing options...
Idsz Posted June 28, 2009 Share Posted June 28, 2009 Strange, mine doesn't suffer any of the problems you mentioned. Here's a picture taken directly from a camera (Sony Cybershot 8mp) and one color corrected (as close as possible to what I see with my eyes). The camera shows dark corners a little which I don't see with my eyes and from a 20cm distance I also don't see vertical rectangle pixels like in the picture, it's not as blurry either, it's perfect for that matter. I do always play games with the Lynx a little turned forward and the brightness as low as possible. btw your links seem to be dead Quote Link to comment Share on other sites More sharing options...
TailChao Posted June 28, 2009 Author Share Posted June 28, 2009 (edited) btw your links seem to be dead This is a bumped topic from two years ago, I don't even know if I have the pictures themselves anymore. The point of this modification was to reduce the amount you need to tilt the Lynx forward to correct the colors, it essentially just lowers the brightness of the backlight and slightly improves visibility outside. Some Lynx LCDs are better than others, so you may have gotten a particularly good one. Replacing the fluorescent tube with LEDs would save on power, but may yield a "colder" image depending upon what variety of white LEDs are used. Regardless, as long as the game's graphics were drawn with the was the Lynx's LCD works in mind, this isn't such a big deal. Some Game Gear titles used this to great advantage, but it's not so common on the Lynx. Edited June 28, 2009 by TailChao Quote Link to comment Share on other sites More sharing options...
mcjakeqcool Posted June 28, 2009 Share Posted June 28, 2009 I think the Lynx LCD is good enough as it is. Quote Link to comment Share on other sites More sharing options...
Jess Ragan Posted July 24, 2010 Share Posted July 24, 2010 I can't disagree with this enough. The Lynx II is totally washed out and difficult to see... if I had the ability to modify it for better visibility, I certainly would. I recall the Lynx I having a better picture, but that could just be my imagination. Quote Link to comment Share on other sites More sharing options...
ZylonBane Posted July 24, 2010 Share Posted July 24, 2010 And it took you an entire YEAR to get around to voicing your disagreement? What the hell were you doing... digging through the archives looking for things to disagree with? 2 Quote Link to comment Share on other sites More sharing options...
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