If individual pixels are blacked out, most likely you will have to replace the digitizer.
To understand, there are "two" screens. The "glass" and the "digitizer" where the digitizer is the panel that produces the pixels.
You will most likely have to get your digitizer and screen replaced
A damaged LCD will not reduce battery life. If it is damaged and has many dead pixels, it actually could strengthen the life, because no power is being used to light the pixels. Although, that effect will be so small that it probably won't be noticeable.
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So far only the MacBook Pro with 15" Retina Display has a 2880 x 1800 screen. This is 220 pixels per inch (87 pixels per cm); The 4th & 5th generation iPhone 4/4S and iPod Touch have smaller screens but at a higher density of 326 pixels per inch (128 pixels per cm).Otherwise, QSXGA at 2560 x 2048 is the highest resolution made - probably for Apple as well as PCs.
small pixels
one megapixel is a million pixels, so 9.2 mega pixels would be 9.2 million pixels, or 9,200,000 pixels.
123,200 pixels = 0.1232 megapixels.
pixels
To determine the number of pixels in a photo, multiply the width of the photo in pixels by the height of the photo in pixels. This will give you the total number of pixels in the image.
To find the number of pixels in an image, multiply the width of the image in pixels by the height of the image in pixels. This will give you the total number of pixels in the image.
To find the number of pixels in an image, multiply the width of the image in pixels by the height of the image in pixels. This will give you the total number of pixels in the image.
To determine the number of pixels in a picture, you can multiply the width of the picture in pixels by the height of the picture in pixels. This will give you the total number of pixels in the image.
To determine the number of pixels in an image, multiply the width of the image in pixels by the height of the image in pixels. This will give you the total number of pixels in the image.