Pixel drive circuit and method for active electroluminescent display
A pixel driving circuit, electro-luminescence technology, applied in electro-luminescence light sources, static indicators, instruments, etc., can solve the problem that the writing effect is not easy to accurately control and so on
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[0016] The concept of the present invention is to use a fixed current to charge a gray-scale voltage to a saturation value to drive a light-emitting diode to emit light, and then write a data signal in voltage mode to control the discharge speed of the gray-scale voltage, so that the The display time and brightness of the light-emitting diodes are changed to achieve the effect of controlling the gray scale.
[0017] figure 1 It is a structural diagram of a pixel driving circuit according to Embodiment 1 of the present invention. A pixel circuit 102 mainly includes a discharge circuit 104 , a driving pump 106 and a light emitting diode 108 . The discharge circuit 104 is coupled to a scan signal SCAN and a data voltage DATA. The driving pump 106 is coupled to the discharge circuit 104 , the scan signal SCAN, and a current source 116 . The LED 108 is coupled to the driving pump 106 . The pixel circuit 102 starts to receive the data voltage DATA from the discharge circuit 104 ...
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