Display apparatus with adjusted power supply voltage
OwnerHiroshi Tsuchiya, Shoichiro Matsumotoinventors
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Abstract
A display apparatus includes an organic light emitting diode (OLED) which serves as an optical element, a first transistor which serves as a switch for writing luminance data and a second transistor which drives the OLED. A cathode of the OLED is connected to a constant voltage, and a source electrode of the second transistor is connected to a power supply voltage via a power supply line. Potential of the constant voltage is set to a negative value whereas potential of the power supply voltage is set to a positive value. Thus, the difference between the absolute values of the constant voltage and the power supply voltage becomes small compared to a case where the constant voltage is set to 0 V.
Claims18
A display apparatus, including:
- an optical element;
- a drive element which drives said optical element;
- and
- first and second voltage sources to drive said drive element,
- wherein each of said first voltage source and second voltage source has positive and negative voltage values, and the voltage value of said voltage source which is of the positive voltage value is lower than a breakdown voltage of said drive element.
A display apparatus, including:
- an optical element;
- a drive element which drives said optical element;
- and
- first and second voltage sources to drive said drive element,
- wherein each of said first voltage source and second voltage source has positive and negative voltage values, and an absolute value of the voltage value of said voltage source which is of the negative voltage value is lower than a breakdown voltage of said optical element.
A display apparatus, including:
- an optical element;
- a drive element which drives said optical element;
- and
- first and second voltage sources to drive said drive element,
- wherein each of said first voltage source and second voltage source has positive and negative voltage values, and an absolute value of the voltage value of said voltage source which is of the negative voltage value is greater than or equal to a threshold voltage of said optical element.
Dependencies are inferred from the claim text.