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US 2011/0298782 A1Published application
Organic electroluminescent display and method of driving the same
AssigneeSamsung Mobile Display Co., Ltd.
InventorJung-Kook Park
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Abstract
An organic electroluminescent display and method of driving the display are disclosed. The display includes a power supply voltage generator which generates power voltages according to both a temperature of the display and a luminance level setting.
Claims20
An organic electroluminescent display, comprising:
- a pixel unit comprising:
- a plurality of scanning lines arranged in a row direction,
- a plurality of data lines arranged in a column direction, and
- a plurality of pixels respectively disposed near intersections of the plurality of scanning lines and the plurality of data lines;
- a DC-DC converter configured to generate a first power voltage and a second power voltage and to supply the first and second power voltages to the plurality of pixels, wherein the voltage difference between the first and second power voltages is determined based on a control signal;
- and
- a DC-DC converter controller, comprising:
- a temperature sensor configured to measure a peripheral temperature of the organic electroluminescent display,
- a register configured to store a luminance level setting of the pixel unit,
- a selector configured to select a voltage difference level according to the peripheral temperature measured by the temperature sensor and the luminance level setting of the register;
- and
- a signal generator configured to generate the control signal based on the selected voltage difference level.
9 more elements
A method of driving an organic electroluminescent display, the method comprising:
- measuring a peripheral temperature of the organic electroluminescent display;
- determining a luminance level setting of a pixel unit according to an input of a user;
- selecting a voltage difference level according to the measured peripheral temperature and the luminance level setting;
- and
- generating a control signal for a DC-DC converter based on the selected voltage difference level.
2 more elements
An organic electroluminescent display, comprising:
- a pixel unit comprising a plurality of pixels;
- and
- a DC-DC converter configured to generate a first power voltage and a second power voltage and to supply the first and second power voltages to the plurality of pixels, wherein the voltage difference between the first and second power voltages is determined based on a temperature of the display and a luminance level setting.
Dependencies are inferred from the claim text.