VOLTAGE REGULATOR AND DISPLAY DEVICE
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Sep 20, 2024
filing date -
Sep 20, 2024
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Abstract
A voltage regulator for outputting a pixel power supply voltage supplied to pixels of a display panel includes a voltage divider configured to generate a feedback voltage by dividing the pixel power supply voltage, an error amplifier configured to generate an amplifier output voltage by comparing a reference voltage and the feedback voltage, a variable phase compensating circuit configured to adjust the amplifier output voltage according to a load current, a source follower buffer configured to generate a control voltage by buffering the adjusted amplifier output voltage, and a pass transistor configured to output, as the pixel power supply voltage, an input voltage based on the control voltage.
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