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LED driving circuit, driving method and LED display system

A technology of LED drive and LED light string, which is applied in the direction of static indicators, instruments, etc., and can solve the problems that the signal output terminal cannot output normal control signals, affect image display, and LED lights cannot be normally lit.

Active Publication Date: 2021-11-09
HANGZHOU SHIXIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when a certain drive circuit or multiple continuous drive circuits of the LED light string unit in the LED display system fail, the signal output terminal of the drive circuit will not be able to output normal control signals, resulting in the failure of the drive circuit and subsequent The LED lights controlled by the drive circuit cannot be lit normally, which affects the image display

Method used

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  • LED driving circuit, driving method and LED display system
  • LED driving circuit, driving method and LED display system
  • LED driving circuit, driving method and LED display system

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Embodiment Construction

[0033] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0034] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] figure 1 A schematic block diagram of an LED display system in the prior art is shown. The LED display system includes a control terminal 100 and an LED display screen 200 , and the control terminal 100 is connected to the LED display screen 200 . The LED display screen 200 includes a plurality of cascaded LED light string units (C1-Cn). Each LED light string unit includes at least one LED driving circuit and an LED light string. Multiple LED driving circuits of multiple cascaded LED la...

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PUM

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Abstract

The invention discloses an LED driving circuit, a driving method thereof and an LED display system. The LED driving circuit comprises a main input end, at least one standby input end and an output end. The LED driving circuit receives a configuration signal and a data signal from an upper-stage LED driving circuit through a main input end, or receives the configuration signal and the data signal from any one preceding-stage LED driving circuit through a standby input end, and the preceding-stage LED driving circuit and the current-stage LED driving circuit are separated by at least one LED driving circuit; the LED driving circuit forwards a configuration signal and a data signal of the cascaded LED driving circuit after the LED driving circuit at the current stage to the LED driving circuit at the next stage and / or a post-stage LED driving circuit bridged with the LED driving circuit at the next stage through the output end, and the post-stage LED driving circuit is separated from the LED driving circuit at the current stage by at least one LED driving circuit. According to the invention, normal work of subsequent circuits is not affected even if a plurality of circuits are continuously damaged.

Description

technical field [0001] The invention relates to the technical field of LED display, in particular to an LED driving circuit, a driving method, and an LED display system. Background technique [0002] In application projects such as outdoor landscape lighting and auxiliary lighting, low-power LED chips are widely used. LED light strings and LED exterior wall display screens manufactured by LED light strings according to predetermined rules are used to display various patterns and text information. This kind of LED light string and the LED display system combined with the LED light string include a control terminal and an LED display. The LED display screen includes a plurality of LED light string units, and each LED light string unit corresponds to a display area of ​​the LED display screen. The LED light string unit can be used individually, or a plurality of LED light string units can be cascaded in sequence to form a group to expand the display area of ​​the display scre...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 陈日仪鲍宏王亮
Owner HANGZHOU SHIXIN TECH CO LTD