Patent ID: 8786589

Claim:
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, wherein the selector comprises a storage unit configured to store one or more tables, each table comprising a plurality of voltage difference levels, wherein each voltage difference level corresponds to a potential luminance level setting, and wherein the selector is configured to select one of the tables according to the measured peripheral temperature, and to select the voltage level difference from the selected table according to the luminance level setting from the register, wherein the voltage difference levels correspond to the luminance levels in the table, and wherein the selector selects a first table if the measured peripheral temperature is higher than the reference temperature, and selects a second table if the measured peripheral temperature is lower than the reference temperature.