Display driver, electro-optical device, and method of setting display driver parameters
AssigneeSeiko Epson Corporation
InventorTsuyoshi Tamura
Life of this patent
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Abstract
A display driver includes a control register; a memory control circuit which controls EEPROM access; and a register write circuit which writes a display characteristic control parameter that has been read from EEPROM to the control register at power-on, at a system reset, or at refresh timing (during a non-display period), to perform initialization processing or refresh processing for the control register. The register write circuit writes refresh period information or manufacture information that has been read from the EEPROM to the control register. MPU access is inhibited during the writing of the display characteristic control parameter to the control register.
Claims20
A display driver for driving a display panel, the display driver comprising:
- a control register which controls the display driver;
- a memory control circuit which performs access control over a memory which is provided outside or inside the display driver and stores a display characteristic control parameter;
- and
- a register write circuit which writes a display characteristic control parameter that has been read from the memory to the control register and performs refresh processing of the control register, at a given refresh timing.
A display driver for driving a display panel, the display driver comprising:
- a control register which controls the display driver;
- a memory control circuit which performs access control over a memory which is provided outside or inside the display driver and stores a display characteristic control parameter;
- and
- a register write circuit which writes a display characteristic control parameter that has been read from the memory to the control register and performs initialization processing of the control register, at power-on or at a system reset.
Dependencies are inferred from the claim text.