Panasonic tc-22lh1 technical guide Service Manual
1.4 Color
An LCD that can show colors must have three sub-pixels (red, green and blue color
filters to create each color pixel.
These sub pixels are created by applying color filters
that allow only certain wavelengths to pass through them while absorbing the rest. With
a combination of red, blue and green sub pixels of various intensities; a pixel can be
made to appear in many different colors
Through the control and variation of the applied voltage, the intensity of each sub pixel
can range over 256 shades. Combining the sub pixels produces a palette of 16.8
million colors (256 shades of red x 256 shades of green x 256 shades of blue), as
shown below. These color displays take an enormous number of transistors. For
example, a typical laptop computer supports resolutions up to 1,024x768. If we multiply
1,024 columns by 768 rows by 3 sub pixels, we get 2,359,296 transistors etched onto
the glass! If there is a problem with any of these transistors, it creates a "bad pixel" on
the display. Most active matrix displays have a few bad pixels scattered across the
screen. Figure 3 can give you an idea of the RGB sub pixels within each color pixel.
a combination of red, blue and green sub pixels of various intensities; a pixel can be
made to appear in many different colors
Through the control and variation of the applied voltage, the intensity of each sub pixel
can range over 256 shades. Combining the sub pixels produces a palette of 16.8
million colors (256 shades of red x 256 shades of green x 256 shades of blue), as
shown below. These color displays take an enormous number of transistors. For
example, a typical laptop computer supports resolutions up to 1,024x768. If we multiply
1,024 columns by 768 rows by 3 sub pixels, we get 2,359,296 transistors etched onto
the glass! If there is a problem with any of these transistors, it creates a "bad pixel" on
the display. Most active matrix displays have a few bad pixels scattered across the
screen. Figure 3 can give you an idea of the RGB sub pixels within each color pixel.
Figure 3
9