Pixel driving circuit and organic light emitting displayer using same

Abstract

The invention relates to a pixel driving circuit which comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a first capacitor and a second capacitor. The first electrode and the control electrode of the first transistor, the first electrode and the control electrode of the second transistor, the control electrode of the third transistor and the control electrode of the fifth transistor are connected with corresponding signal lines. The first capacitor and the second capacitor are connected between the second electrode of the second transistor and a second direct current source in series. The first electrode of the third transistor is connected with the second electrode of the second transistor. The first electrode of the fourth transistor is connected with the second direct current source, the control electrode of the fourth transistor is connected with the first electrode of the third transistor, and the second electrode of the fourth transistor is connected with the second electrode of the third transistor. The first electrode of the fifth transistor is connected with the second electrode of the fourth transistor, and the second electrode of the fifth transistor is connected with a first direct-current voltage source through the positive electrode of an organic light emitting diode. The invention further provides an organic light emitting display. The pixel driving circuit reduces influences caused by wiring and manufacturing, and solves the problem that a panel is uneven in brightness.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a pixel driving circuit and an organic light emitting display using the same. Background technique [0002] Active Matrix Organic Light Emitting Diode (AMOLED) is known as the next-generation display technology. Compared with traditional LCD panels, AMOLED has the characteristics of faster response, higher contrast and wider viewing angle. . [0003] figure 1 It is a pixel driving circuit of a traditional organic light emitting display. like figure 1 As shown, the pixel driving circuit 10 is used to drive an organic light emitting diode (Organic Light Emitting Diode, OLED) 11, the cathode of the OLED is connected to the first DC power supply OVSS, and the pixel driving circuit 10 includes N-channel field effect transistors M11, P The channel field effect transistor M12 and the first capacitor C11. Both the N-channel field effect transistor M11 and the P-channel...

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved by the present invention is to provide a pixel drive circuit and an organic light-emitting display using it, which can improve the problem of uneven brightness of the panel

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