Display driver ic having embedded dram
AssigneeNEC Electronics Corporation
InventorHiroyuki TAKAHASHI
Life of this patent
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Abstract
A display driver IC for controlling display of an image on a display panel is provided with a DRAM, a power supply circuit and a driver circuit. Digital data corresponding to the image is stored in the DRAM. The power supply circuit generates a predetermined voltage. The driver circuit converts the digital data into a gray-scale voltage by using the predetermined voltage and outputs the gray-scale voltage to the display panel. Electric power is supplied to the DRAM from the power supply circuit.
Claims12
A display driver IC for controlling display of an image on a display panel, comprising:
- a DRAM in which digital data corresponding to said image is stored;
- a power supply circuit configured to generate a predetermined voltage;
- and
- a driver circuit configured to convert said digital data into a gray-scale voltage by using said predetermined voltage and to output said gray-scale voltage to said display panel,
- wherein electric power is supplied to said DRAM from said power supply circuit.
A display driver IC for controlling display of an image on a display panel, comprising:
- a DRAM in which digital data corresponding to said image is stored;
- and
- a driver circuit configured to convert said digital data into a gray-scale voltage and to output said gray-scale voltage to said display panel,
- wherein said DRAM operates only with positive voltages and a ground voltage.
Dependencies are inferred from the claim text.