Driver for driving a plurality of light-emitting components and display equipment

A technology for light-emitting components and drivers, which is applied to electrical components, electroluminescent light sources, instruments, etc., can solve the problems of increasing the difficulty of circuit debugging, increasing the complexity of driving circuits and increasing production costs.

Active Publication Date: 2010-12-15
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the complexity and production cost of the entire driving circui

Method used

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  • Driver for driving a plurality of light-emitting components and display equipment
  • Driver for driving a plurality of light-emitting components and display equipment
  • Driver for driving a plurality of light-emitting components and display equipment

Examples

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Embodiment Construction

[0053] The driver of the light emitting element according to the embodiment of the present invention will be described in detail below. In the following description, some specific details, such as specific circuit structures in the embodiments and specific parameters of these circuit elements, are used to provide a better understanding of the embodiments of the present invention. It will be understood by those skilled in the art that embodiments of the invention may be practiced even without some details or other combinations of methods, elements, materials, and the like.

[0054] One embodiment of the present invention provides an LED driver with a high-precision current matching function, which includes a DC-DC converter and a current equalization circuit described below.

[0055] Various embodiments of the present invention also provide various fault detection and protection functions for the LED driver. Different embodiments of the present invention also provide a high-pr...

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PUM

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Abstract

The invention provides a driver for driving a plurality of light-emitting components and display equipment. According to the embodiment of the invention, a current matching function, a phase shift PWM (Pulse-Width Modulation) dimming function and multiple fault detection and protection functions are integrated into the driver. The embodiment of the invention also provides a high-precision matching circuit, a phase shift PWM dimming circuit and a multifunctional fault detection and protection circuit which are suitable for the driver. The scheme can ensure that the emitted light of the light-emitting components maintains uniform and consistent.

Description

technical field [0001] Embodiments of the present invention relate to a driver and a display device for a light-emitting element, in particular to a driver for multiple parallel-connected light-emitting elements and a display device thereof. Background technique [0002] At present, LEDs are widely used in the display devices of various electronic products because of their small size, low power consumption, high luminous efficiency, and long life. lamp. In various applications of LEDs as backlight devices, the safety of system operation, fault detection, fault protection, etc. are very important. In addition, in backlight applications using multiple LEDs / LED strings, their uniformity and consistency of light emission Sexuality is also expected by users, which requires that the current flowing through each LED / LED string must be evenly matched. [0003] In order to realize the above-mentioned various functions, the LED drive circuit in the prior art mostly adopts a DC-DC co...

Claims

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Application Information

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IPC IPC(8): G09G3/34G09G3/36G01R19/165H02H3/08H02H3/20H05B44/00
CPCG09G2330/08H02H3/20G01R19/165H05B33/0827H02H3/08G09G3/3406Y02B20/341H05B45/46Y02B20/30
Inventor 余波任远程杜磊邝乃兴杨志江
Owner CHENGDU MONOLITHIC POWER SYST
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