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Voltage conversion circuit and display device

A voltage conversion circuit and voltage conversion technology, which is applied in the direction of output power conversion device, adjustment of electric variables, conversion of DC power input to DC power output, etc., which can solve the problems of low work efficiency and so on

Active Publication Date: 2021-04-16
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present application provides a voltage conversion circuit and a display device to solve the technical problem of low working efficiency of the voltage conversion circuit in the prior art under light load

Method used

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  • Voltage conversion circuit and display device
  • Voltage conversion circuit and display device
  • Voltage conversion circuit and display device

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0035] see figure 1 and figure 2 , figure 1 is the first structural schematic diagram of the voltage conversion circuit provided by the present application, figure 2 yes figure 1 Schematic diagram of the structure of the medium voltage conversion module. The voltage conversion circuit 100 provided in the embodiment of the present application includes a voltage conversion module 10 , a comparison module 20 and a control module 30 .

[0036] Wherein, the voltage conversion module 10 receiv...

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Abstract

The invention provides a voltage conversion circuit and a display device. The voltage conversion circuit comprises a voltage conversion module, a comparison module and a control module. The voltage conversion module comprises at least two voltage conversion units, and the voltage conversion units are used for converting input voltage into target voltage. The comparison module is electrically connected with the voltage conversion module, and the comparison module obtains the to-be-detected voltage of each voltage conversion unit, and compares each to-be-detected voltage with a reference voltage, so as to obtain a feedback signal. The control module is electrically connected with the voltage conversion module and the comparison module, and the control module receives a feedback signal and controls the voltage conversion unit to convert the input voltage into the target voltage based on the feedback signal. According to the invention, the working efficiency of the voltage conversion circuit under light load is effectively improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a voltage conversion circuit and a display device. Background technique [0002] A display device generally includes a display panel and an external driving system. The external driving system needs to provide various voltages such as analog supply voltage (VAA), digital supply voltage (VDD), gate-on voltage (VGH) and gate-off voltage (VGL), so that the display panel can display normally. Among them, VAA and VDD are relatively large. Therefore, the external drive system generally includes a voltage conversion circuit to convert the input voltage into VAA or VDD required for the normal operation of the display device. [0003] However, since people have higher and higher requirements for display image quality, the resolution of the display panel is also higher and higher. With the improvement of the resolution of the display panel, the voltage / current of each circuit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158
CPCY02B70/10H02M1/0054H02M1/0032H02M1/0009H02M3/1584G09G2330/021G09G2330/028G09G3/006G09G2330/12H02M3/00H02M3/158H02M3/1582H02M5/00H02M7/00
Inventor 李文芳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD