| 摘要 |
The variation of the electric current fed to the luminescent element is prevented in the display device with the electric current driven luminescent element, achieving uniform display brightness. The pulse width modulation circuit 10 generating a pulse width modulation signal SRP, the pulse of which is modulated for a certain period according to the image data, and the electric current generation circuit 20 generating the pulse current I corresponding the pulse width modulation signal are formed. The pulse current I is supplied to the electric current driven luminescent elements L 1 and L 2 through the pixel selection TFT 51, 52 . Since the pulse current I is stable and at a certain level, it is not influenced by the variation among the pixels due to the manufacturing process, achieving uniform display brightness and improved display quality.
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