Display device
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United States of America Patent
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Oct 25, 2005
Grant Date -
May 8, 2003
app pub date -
Oct 18, 2002
filing date -
Oct 19, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The display device of this invention has two types of DA converter for converting a digital image signal to an analog image signal; a first DA converter disposed in the peripheral area of a plurality of pixel elements and a second DA converter disposed within each of the pixel elements. The first DA converter converts the upper four-bit of a six-bit digital image signal and the second DA converter converts the remaining lower two-bit. This enables the simplification of the peripheral circuits of the pixel element, preventing size increase of the framing area of the display panel, while achieving the multiple-depth display with an increased number of the bits of the DA converter. In the display device with the built-in DA converter, the multiple-bit can be achieved while preventing the increase in the circuit size.
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