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LED high-efficiency constant current control device

A constant current control, high efficiency technology, applied in instruments, static indicators, etc., can solve the problems of high heat loss and low power supply efficiency

Pending Publication Date: 2019-02-19
上海得倍电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the turn-on voltage drop of LED tubes of different colors, in order to ensure that all LED tubes can emit light normally, the supply voltage of the column driver is usually set to a higher value, which results in low power efficiency and high heat loss

Method used

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  • LED high-efficiency constant current control device
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Embodiment Construction

[0034] In the following description, the present invention is described with reference to various examples. One skilled in the art will recognize, however, that the various embodiments may be practiced without one or more of the specific details, or with other alternative and / or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail so as not to obscure aspects of the various embodiments of the invention. Similarly, for purposes of explanation, specific quantities, materials and configurations are set forth in order to provide a thorough understanding of embodiments of the invention. However, the invention may be practiced without these specific details. Furthermore, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.

[0035] In this specification, reference to "one embodiment" or "the...

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Abstract

The invention discloses an LED high-efficiency constant current control device. The device comprises a constant current circuit and a DC / DC voltage stabilizing circuit, wherein the constant current circuit generates a constant current; the constant current circuit is electrically connected to the voltage stabilization end of the DC / DC voltage stabilizing circuit; and a current flows into the DC / DCvoltage stabilizing circuit from a power supply and flows into the constant current circuit from the voltage stabilization end of the DC / DC voltage stabilizing circuit.

Description

technical field [0001] The invention relates to the field of LED display screens, in particular to a high-efficiency constant current control device for LEDs. Background technique [0002] Light-emitting diodes (LEDs) are widely used in lighting, backlighting, display and other fields. The advantages of using LEDs as pixels to realize large-screen display include: high brightness, low operating voltage, low power consumption, large size, long life, impact resistance and stable performance, so its application is becoming more and more extensive. [0003] LED display screens generally consist of one or more LED display modules. Each LED display module may include an LED pixel array and a driving unit for driving the LED pixel array. For example, the pixel array may be a 4*4, 16*16, 32*32 or 64*64 pixel array, and so on. Each pixel can be a single-color, double-primary-color or three-primary-color (full-color) pixel unit. Monochrome refers to LED tubes with only one color, ...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 杨晓鹏乔红瑗曾晓丁佳卿
Owner 上海得倍电子技术有限公司
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