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Boosting circuit, control method thereof, display panel and display device

A booster circuit and control terminal technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as inductor temperature rise and potential safety hazards, and achieve the effect of improving safety and realizing overcurrent protection

Active Publication Date: 2018-06-12
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a booster circuit to solve the problem that the temperature of the inductor rises and easily leads to safety hazards when the booster circuit is short-circuited

Method used

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  • Boosting circuit, control method thereof, display panel and display device
  • Boosting circuit, control method thereof, display panel and display device
  • Boosting circuit, control method thereof, display panel and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Such as figure 2 with image 3 As shown, in this embodiment, a boost circuit includes a first module 10 , a second module 20 and a third module 30 .

[0070] In a specific embodiment, the first module 10 includes a first input terminal IN1, a first output terminal OUT1, an inductor L1, a first diode D1, a first capacitor C1 and a grounding switch K1.

[0071] The specific circuit connection relationship is as follows: the first terminal of the inductor L1 is connected to the first input terminal IN1; the anode of the first diode D1 is connected to the second terminal of the inductor L1, and the cathode is connected to the first input terminal IN1. The output terminal OUT1 is connected; the first terminal of the first capacitor C1 is connected to the first output terminal OUT1, and the second terminal is grounded; the switch K1 is connected to the second terminal of the inductor L1.

[0072] In a specific embodiment, the second module 20 includes a second input termin...

Embodiment 2

[0103] This embodiment discloses a display panel, including the voltage boosting circuit described in Embodiment 1. The display panel may also be an LCD display panel, or an OLED display panel.

Embodiment 3

[0105] This embodiment discloses a display device, including the display panel as described in Embodiment 2. The display device may be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

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PUM

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Abstract

The invention discloses a boosting circuit. The boosting circuit comprises a first module, a second module and a third module, wherein the first module comprises a first input end and a first output end and is used for obtaining a boosting signal after a signal input from the first input end is boosted and then outputting the boosting signal from the first output end to a load; the second module comprises a second input end and a second output end and is used for responding to a first power signal to output a pulse signal from the output end, the first module is started to work, and then the boosting signal is obtained; the third module comprises a third input end, a fourth input end and a third output end, the fourth input end responds to the boosting signal so that the first power signalcan be transmitted to the third output end from the third input end, and the signal output from the third output end is input into the first input end; when the first output end is short-circuited, the boosting signal is reduced so that the first power signal cannot be input into the first input end. When the boosting circuit is short-circuited and abnormal, an external power source can be directly cut off to prevent the situation that the booting circuit still has large current and accordingly the temperature is too high, and the safety of a display device is improved.

Description

technical field [0001] The invention relates to the field of display technology. More specifically, it relates to a boost circuit, a control method thereof, a display panel and a display device. Background technique [0002] With the development of optical technology and semiconductor technology, displays represented by Liquid Crystal Display (LCD) have the characteristics of light and thin, low energy consumption, fast response, good color purity and high contrast, and occupy a dominant position in the display field. . [0003] The Boost circuit is a voltage boosting circuit commonly used in liquid crystal displays, and is set in the control IC for outputting switch control signals. Boost circuits usually use inductors to repeatedly charge and discharge to achieve voltage boosting. When in use, the current flowing through the inductors is relatively large. Usually, multiple capacitors are installed at the output end of the Boost circuit to stabilize the voltage and store ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/12
CPCH02H7/1203
Inventor 赵敬鹏张智唐秀珠唐滔良陈帅董兴熊丽军田振国梁雪波胡双
Owner BOE TECH GRP CO LTD