POWER SUPPLY UNIT AND DISPLAY DEVICE INCLUDING THE SAME
First Claim
1. A power supply unit for a display device, including:
- a first voltage generator for generating a first voltage;
a first voltage line connected to the first voltage generator for supplying the first voltage to a plurality of first source drive ICs of the display panel;
a second voltage generator for generating a second voltage;
a second voltage line connected to the second voltage generator for supplying the second voltage to a plurality of second source drive ICs of the display panel; and
a diode circuit including a diode, the diode circuit being connected between the first voltage line and the second voltage line and configured to allow a current flow from the first voltage line to the second voltage line if a difference between the first voltage of the first voltage line and the second voltage of the second voltage line is greater than a first predetermined voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are a power supply unit and a display device including the same, which prevent a source drive IC from being damaged by a supply reversal between a VDD voltage and an HVDD voltage. The power supply unit may include a first voltage generator that generates a first voltage and a first voltage line connected to the first voltage generator for supplying the first voltage to a plurality of first source drive ICs of the display panel. A second voltage generator is included that generates a second voltage, and a second voltage line is connected to the second voltage generator for supplying the second voltage to a plurality of second source drive ICs of the display panel. The power supply unit may further include a diode circuit that includes at least one diode connected between the first voltage line and the second voltage line.
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Citations
15 Claims
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1. A power supply unit for a display device, including:
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a first voltage generator for generating a first voltage; a first voltage line connected to the first voltage generator for supplying the first voltage to a plurality of first source drive ICs of the display panel; a second voltage generator for generating a second voltage; a second voltage line connected to the second voltage generator for supplying the second voltage to a plurality of second source drive ICs of the display panel; and a diode circuit including a diode, the diode circuit being connected between the first voltage line and the second voltage line and configured to allow a current flow from the first voltage line to the second voltage line if a difference between the first voltage of the first voltage line and the second voltage of the second voltage line is greater than a first predetermined voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A display device, including:
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a display panel including a plurality of gate lines, a plurality of data lines, and a plurality of pixels formed at respective intersections of the gate lines and the data lines; a data driver including a plurality of first source drive ICs and a plurality of second source drive ICs, the first and the second source drive ICs being configured to output data voltages to the plurality of data lines; and a power supply unit, including; a first voltage generator for generating a first voltage; a first voltage line connected to the first voltage generator for supplying the first voltage to the plurality of first source drive ICs; a second voltage generator for generating a second voltage; a second voltage line connected to the second voltage generator for supplying the second voltage to the plurality of second source drive ICs; and at least one diode connected between the first voltage line and the second voltage line, the at least one diode allows a current flow from the first voltage line to the second voltage line if a difference between the first voltage of the first voltage line and the second voltage of the second voltage line is greater than a first predetermined voltage. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification