Power supply circuit and display device

A power supply circuit and power supply voltage technology, which is applied in the field of AMOLED display, can solve the problems of power supply 1 difficult to work stably, poor characteristics, and shortened lifespan, and achieve the effects of improving EMI characteristics, increasing lifespan, and avoiding large fluctuations

Active Publication Date: 2013-09-04
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this makes it difficult for the power supply 1 to work stably, thereby reducing its lifespan; on the other hand, the rapidly changing power consumption will cause the electromagnetic radiation (Electron-Magnetic Interference, EMI for short) characteristics of the product to deteriorate

Method used

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  • Power supply circuit and display device

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Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the power supply circuit and display device provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0035] image 3 It is a schematic structural diagram of a power supply circuit provided by Embodiment 1 of the present invention, Figure 4 for image 3 A working schematic diagram of the power supply circuit in Figure 5 for image 3 Another working schematic diagram of the power supply circuit, such as image 3 , Figure 4 with Figure 5 As shown, the power supply circuit includes: a power supply 1 , a charge and discharge module 2 and a detection module 3 , the power supply 1 is connected to the detection module 3 , and the charge and discharge module 2 is connected to the power supply 1 and the detection module 3 respectively.

[0036] The detection module 3 is used to detect detection parame...

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PUM

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Abstract

The invention discloses a power supply circuit and a display device. The power supply circuit comprises a power source, a charging and discharging module and a detection module, wherein the detection module is used for detecting a detection parameter on a power supply path; according to the detected detection parameter, a corresponding mode signal is fed back to the power source by the detection module; preset working voltage is output to a load by the detection module; the power source is used for receiving the mode signal fed by the detection module; according to the mode signal, the power supply voltage corresponding to the mode signal is output by the power source; when the mode signal is a low-power signal, the charging and discharging module is charged by the power source; the charging and discharging module is used for discharging to the detection module when the power source outputs the power supply voltage corresponding to a high-power signal; and when the power source outputs the power supply voltage corresponding to the lower-power signal, charging is carried out by the power source. According to the scheme, the phenomenon that the power consumption of the power source is drastically fluctuated along with the change of the power consumption of the load can be effectively avoided, the power source can stably work, so that the service life of the power source is prolonged, and the EMI (electro-magnetic interference) characteristic of the product is improved.

Description

technical field [0001] The invention relates to AMOLED display technology, in particular to a power supply circuit and a display device. Background technique [0002] Compared with the traditional thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal Display, referred to as TFT-LCD), active matrix organic light emitting diode (ActiveMatrix / Organic Light Emitting Diode, referred to as: AMOLED) display device has many advantages and applications difference. The AMOLED display device has more brilliant colors and a wider color gamut. Moreover, the AMOLED display device is a self-luminous device and does not require a backlight module. [0003] figure 1 It is a schematic structural diagram of an AMOLED display device in the prior art, such as figure 1 As shown, the AMOLED display device includes: a power supply 1 and an AMOLED panel 6 connected to the power supply 1 , and the power supply 1 directly supplies power to the AMOLED panel so that the AM...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00G09G3/32
CPCG09G3/3225G09G2330/025G09G2330/06
Inventor 解红军
Owner BOE TECH GRP CO LTD
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