A pixel circuit, an organic electroluminescence display panel and a display device
A pixel circuit and lighting control technology, applied in the field of pixel circuits, organic electroluminescent display panels and display devices, can solve the problems of restricting the development of high PPI and high OLED display screen, and achieve the effect of improving display uniformity and avoiding influence
Active Publication Date: 2019-08-30
KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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[0003] However, OLED displays have high requirements for PPI. If compensation is achieved by increasing the number of drive transistors, the development of high PPI will be limited. Therefore, it is urgent to propose a new pixel circuit to overcome the existing defects.
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[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0040] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.
[0041] refer to figure 1 As shown in , it is a schematic structural diagram of a pixel circuit provided in this application. The pixel circuit mainly includes the following functi...
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The invention relates to a pixel circuit, an organic electroluminescent display panel and a display device, and belongs to the technical field of display. The pixel circuit comprises a luminescent device, an initialization module, a driving control module, a charging compensation module, a luminescence control module, a first capacitor and a second capacitor; under control of first and second scanning signal ends, the charging compensation module controls the initialization module to initialize the second capacitor via a resetting signal end; after that a first terminal voltage of the second capacitor is reset, a DC signal end charges a second input end of the driving control module via the charging compensation module; under control of the first data signal end, the charging compensationmodule charges the second capacitor; and under control of a luminescence signal end, the first data signal end and the DC signal end, the luminescence control module controls the driving control module to drive the luminescent device to emit light. The threshold voltage is independent from the driving current of the luminescent device without addition of a transistor, and a compensation function is realized.
Description
technical field [0001] The present application relates to the field of display technology, in particular to a pixel circuit, an organic electroluminescence display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) is one of the hot spots in the field of flat panel display research today. OLED has the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. OLEDs are current-driven and require a stable current to control light emission. Due to reasons such as process technology and device aging, the threshold voltage V of the driving transistor of the pixel circuit will be th There is inhomogeneity, which causes the current flowing through each pixel OLED to change, resulting in uneven display brightness, thereby affecting the display effect of the entire image. At present, it can be compensated by increasing the number of driving transistors to form a new pixel circ...
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IPC IPC(8): G09G3/3208
Inventor 赵国华文国哲朱晖
Owner KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD