Method for dynamically regulating power supply voltage on basis of one-dimension partitioning strategy of AMOLED (active-matrix organic light-emitting diode) panel
A power supply voltage, dynamic adjustment technology, applied in static indicators, instruments, etc., can solve the problems of increased pixel circuit and drive timing design complexity, unfavorable AMOLED panel resolution, inability to adjust the power supply voltage, etc., to ensure quality, performance, etc. consumption reduction effect
Active Publication Date: 2015-02-25
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
However, this method will increase the design complexity of the pixel circuit and driving timing, which is not conducive to improving the resolution of the AMOLED panel.
In the literature, some researchers also adopt the method of changing the power supply voltage according to the pixel grayscale information to achieve the purpose of reducing power consumption; Passively driven OLED display panels (PMOLED), which are not suitable for high-definition AMOLED panels, cannot adjust the power supply voltage on AMOLED panels according to the grayscale information of regional pixels to achieve better energy-saving effects
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[0038] In the first step, according to the relationship between the luminous intensity and voltage of different color light-emitting units in the pixel, an appropriate sub-pixel area is allocated, so that the driving voltage of the same gray scale of different color light-emitting units is consistent; the pixel is Refers to an independent unit with a certain area in the AMOLED panel, which contains light-emitting units of different colors, and can emit sub-pixels of different colors of light; the appropriate sub-pixel area refers to the realization of the following The same driving voltage drives the areas of the sub-pixels of different color light-emitting units.
[0039] In the second step, the channel width of the driving transistor is adjusted according to the driving current corresponding to the maximum grayscale of the light-emitting units of different colors in the pixel, so that the bias voltage of the driving transistor for driving the same gray-scale of the light-emit...
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The invention discloses a method for dynamically regulating power supply voltage on the basis of a one-dimension partitioning strategy of an AMOLED (active-matrix organic light-emitting diode) panel. The method is characterized in that the AMOLED panel is partitioned into multiple zones in a one-dimension direction, power supply voltage in the different zones is regulated according to grey scale information of images displayed in the different zones, while grey scale signal voltage is compensated according to output characteristic curves of drive transistors and current of corresponding grey scale. By the method, image information matching is facilitated, power consumption of the AMOLED panel is lowered, and connections of peripheral power supply chips and actual circuits are benefited. Since the signal voltage is compensated according to grey scale-current information and the output characteristic curves of the drive transistors, quality of the displayed images is guaranteed.
Description
technical field [0001] The invention relates to an organic photoelectric display device, in particular to a method for dynamically adjusting a power supply voltage based on a one-dimensional partition strategy of an AMOLED panel, and belongs to the field of photoelectric display technology. Background technique [0002] In recent years, with the advancement of organic light-emitting materials, transparent electrodes, and TFT array preparation technologies, active-driven organic light-emitting diode (AMOLED) displays have developed rapidly. With their simple device structure, high-definition panels, Excellent display performance and the potential of flexible display are gradually becoming a new generation of flat panel display devices, known as Dream Display. At present, energy saving and environmental protection are the themes of the times. Although compared with TFT-LCD displays, AMOLED displays have inherent low power consumption advantages, but the power consumption of AM...
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IPC IPC(8): G09G3/32G09G3/3225
Inventor 崔晴宇蒋琛姚广宇徐小丽郭小军
Owner SHANGHAI JIAOTONG UNIV