内容来源：https://www.engadget.com/2252808/dead-pixel-vs-stuck-difference-between/

内容总结：

坏点和亮点有何区别？凑近看便能分辨。

许多电子设备用户都经历过这样的恐慌时刻：想要擦掉屏幕上的一个印记，结果却发现这其实是屏幕本身出了问题。有时，这可能是由信号源或线缆问题引起的，不必过于担心。但其他时候，这就是像素问题了——由于可修复程度各不相同，像素问题往往更令人头疼。

即便是最好的显示器也难以幸免于潜在的像素问题，主要分为两种类型：亮点和坏点。两者都是屏幕用户不愿看到的斑点——更糟糕的情况是成簇的斑点。然而，尽管这两种屏幕瑕疵在形状上看起来十分相似，但它们之间存在一些明显区别，主要体现在具体外观以及是否可修复上。

如何分辨两者

亮点和坏点最大的区别之一在于是否发光。亮点会一直亮着，持续显示蓝色、红色、绿色或明亮的白点；而坏点顾名思义，已经不再工作，始终是黑色的。这种视觉差异可以帮助你判断自己面对的是哪种问题。

两者的另一个关键区别在于可修复性。亮点有多种排查修复途径，通常可以恢复正常。而坏点则无法挽救。如果你的屏幕出现了坏点，很遗憾，你要么更换屏幕，要么学会忍受它。往好处想，相比屏幕烧屏等问题，坏点在视觉上通常不那么碍眼。

如何检测坏点和亮点

亮点和坏点非常小，有时很难确认问题是否出在像素上，更别说判断具体是哪种情况。首先，最好排除所有其他可能的显示问题。彻底清洁屏幕，查看问题是否在不同应用中都会出现，如果条件允许，尝试更换新的线缆和输入设备。

排除其他问题后，进行一项最终测试，以准确锁定问题所在。有多个网站和应用可以用来检测像素问题，例如 Dead Pixel Buddy，甚至还有一些声称可以修复该问题的工具，如 JScreenFix 或 Dead Pixels Test and Fix。需要注意的是，亮点有时更难诊断，因为由供电或发热问题导致的亮点可能只是间歇性出现。如果是这种情况，请在问题再次出现时尽快运行上述检测工具。

中文翻译：

死像素和 stuck 像素有什么区别？
仔细观察，你就能分辨出它们的不同。

许多电子产品用户都经历过那种心头一紧的恐慌——想擦掉屏幕上的一块印记，结果发现这其实是屏幕本身出了问题。有时候，这可能是信号源或线缆问题造成的，不必惊慌。但另一些时候，这就是像素问题了，而由于修复难度各不相同，像素问题往往更让人头疼。

即便是最好的显示器，也难逃像素问题的困扰。像素问题主要分为两种：stuck 像素和死像素。两者都是小点——或者更糟，是一簇小点——没有任何屏幕用户愿意看到它们。不过，虽然这两种屏幕故障在形状上看起来很像，但它们之间还是有一些明显的区别，主要体现在具体外观以及是否可以修复上。

如何分辨两者

stuck 像素和死像素最大的区别之一在于是否发光。stuck 像素会一直亮着，持续显示蓝色、红色、绿色或明亮的亮点；而死像素顾名思义，已经不再工作，始终是黑色的。这种视觉上的差异可以帮助你判断自己面对的究竟是哪种问题。

两者另一个主要区别在于可修复性。stuck 像素有很多排查修复的方法可以尝试，通常能够恢复正常。而死像素则无法挽救。如果你遇到了死像素，很不幸，你要么换一台设备，要么学会忍受它。往好处想，比起屏幕烧屏之类的问题，死像素在视觉上通常没那么碍眼。

如何检测死像素和 stuck 像素

stuck 像素和死像素都非常小，有时候很难判断它们到底是不是问题所在，如果是的话，又到底是哪一种。首先，最好排除所有其他可能的显示问题。彻底清洁显示屏，看看问题是否在不同应用中都会出现，如果可以的话，换一根新线缆和一台新输入设备再试试。

排除其他问题之后，再做一次最终测试，以准确锁定问题所在。有几个网站和应用可以用来检测像素问题，比如 Dead Pixel Buddy，甚至还有一些声称有可能修复该问题的工具，比如 JScreenFix 或 Dead Pixels Test and Fix。需要注意的是，stuck 像素有时候更难诊断，因为如果根本原因是供电或发热问题，它们可能只会间歇性地出现。如果是这种情况，一旦你发现它再次出现，就尽快打开这些检测工具试试。

英文来源：

What is the difference between a dead pixel and a stuck pixel?
Look closely and you can tell them apart.
Many electronics users have felt the wave of panic that comes with trying to wipe away a mark on their screen, only to realize it's actually an issue with the screen itself. Sometimes, this can be caused by factors like source or cable issues, and isn't cause for alarm. Other times, however, it's a pixel problem, which can be much more dread-inducing due to varying levels of repairability.
Even the best monitors aren't safe from a potential pixel issue, of which there are two main types: stuck pixels and dead pixels. Both are dots — or, even worse, clusters of dots — that no screen user wants to see. However, though both screen annoyances look a lot alike shape-wise, there are some distinct differences between them, namely in their exact appearance and if they can be fixed.
Spotting the difference
One of the biggest differences between a stuck and dead pixel is the presence of light. A stuck pixel is permanently on, displaying a constant blue, red, green or bright point, while a dead pixel is, as the name suggests, no longer functioning and is always black. This visual difference can help you determine which particular problem you're facing.
The other main defining factor between the two is how fixable they are. A stuck pixel has a myriad of troubleshooting routes that can be taken, and can often be returned to normal. A dead pixel, on the other hand, cannot be salvaged. If you've got a dead pixel, you'll unfortunately either have to get a replacement or learn to tolerate it. On the bright side, it's a generally less obtrusive visual issue than something like screen burn-in.
How to test for dead and stuck pixels
Stuck and dead pixels are so small it can sometimes be tricky to identify if they're even the issue at hand, and, if they are, which instance in particular you're dealing with. First, it's best to rule out all other display issues that could be going on. Clean your display thoroughly, see if the problem persists across different applications and, if you can, try both a new cable and input device.
Once you've ruled out other problems, conduct a final test designed to concretely pinpoint the issue. There are several sites and apps that can be used to sniff out pixel problems, like Dead Pixel Buddy, and even some that purport the potential to solve the issue as well, like JScreenFix or Dead Pixels Test and Fix. It should be noted that stuck pixels can sometimes be harder to diagnose, as those with power or heat problems as the underlying cause may only appear intermittently. If that's the case, try to pull up one of these tests as soon as you notice the issue's returned.