Digital Foci imt-063 用户指南
Image Moments
User’s Guide
Page 66
Version 1.0.1-R0
15. Digital Foci LCD Display Pixel Policy
This section defines the different types of pixel anomalies seen on LCD displays, explains
why such anomalies occur, and states standard pixel policy for warranty service. In order to
qualify for repair or replacement under warranty, the number of pixel anomalies on your
LCD panel must exceed these industry standards.
why such anomalies occur, and states standard pixel policy for warranty service. In order to
qualify for repair or replacement under warranty, the number of pixel anomalies on your
LCD panel must exceed these industry standards.
Why Pixel Anomalies Occur
Active-matrix LCD technology uses rows and columns of addressable locations (pixels) that
render text and images on the display. Each pixel location has three subpixels in the primary
colors of red, green, and blue that allow the image to be rendered in full color. Each subpixel
has a corresponding transistor responsible for turning the subpixel on and off.
render text and images on the display. Each pixel location has three subpixels in the primary
colors of red, green, and blue that allow the image to be rendered in full color. Each subpixel
has a corresponding transistor responsible for turning the subpixel on and off.
The standard of production techniques for LCD manufacturing today cannot guarantee an
absolutely fault-free display. During the production process, it is not uncommon for one or
more pixels to be fixed in an unchanging state. The visible result is a pixel or subpixel with a
fixed color that does not change or one that is dark and does not light at all. In most
situations, these fixed pixels are unnoticeable and do not detract from the display quality or
usability.
absolutely fault-free display. During the production process, it is not uncommon for one or
more pixels to be fixed in an unchanging state. The visible result is a pixel or subpixel with a
fixed color that does not change or one that is dark and does not light at all. In most
situations, these fixed pixels are unnoticeable and do not detract from the display quality or
usability.
Types of Pixel Anomalies
There are two types of pixel anomalies: bright pixel anomaly and dark pixel anomaly.
Bright pixel anomaly: A bright pixel anomaly is defined as a pixel or subpixel that is always
lit or ‘on’. The bright pixel anomaly will constantly show as red, green, blue, or white.
lit or ‘on’. The bright pixel anomaly will constantly show as red, green, blue, or white.
Dark pixel anomaly: A dark pixel anomaly is defined as a pixel or subpixel that is always
dark or ‘off’. The dark pixel anomaly will always be dark and will not show any color.
dark or ‘off’. The dark pixel anomaly will always be dark and will not show any color.
Standard Pixel Policy
Digital Foci warrants that any LCD display with an unacceptable number of pixel anomalies
will be repaired or replaced. To qualify for repair or replacement under warranty, the number
of pixel anomalies on the TFT LCD panel must exceed these industry standards.
will be repaired or replaced. To qualify for repair or replacement under warranty, the number
of pixel anomalies on the TFT LCD panel must exceed these industry standards.
Pixel Policy Standards Chart
Anomaly Type
Number of
anomalies
Bright pixel
2
Dark pixel
3
Any combination of bright and dark pixels
4
Technical Support
If you notice your display contains more than the number of pixel anomalies as stated on the
above chart, please contact Digital Foci, Inc. tech support at support@digitalfoci.com.
above chart, please contact Digital Foci, Inc. tech support at support@digitalfoci.com.