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Control device and method of LED array and LED display screen

A technology for LED arrays and control devices, applied to static indicators, instruments, etc., can solve problems such as insufficient utilization of IO ports, and achieve the effects of reducing driving costs, improving brightness, and saving quantity

Pending Publication Date: 2021-10-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems mentioned in the background technology, the present invention provides an LED array control device, method and LED display screen to solve the problem of insufficient utilization of IO ports when the existing LED array is driven by row and column drive. technical issues

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  • Control device and method of LED array and LED display screen
  • Control device and method of LED array and LED display screen
  • Control device and method of LED array and LED display screen

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Embodiment Construction

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention discloses a control device and method for an LED array and an LED display screen. The LED array comprises m x n LED lamp beads and m+1 buses, the two ends of each lamp bead are connected to different buses respectively, and m is larger than or equal to n; and the control device further comprises a controller, the m+1 buses are connected to the controller, and the controller outputs a high level, a low level or a high resistance state to control the working state of the LED lamp beads so as to display the characters to be displayed. According to the control device and method for the LED array and the LED display screen, the two ends of each LED lamp bead of the m x n LED array are connected to the different m+1 buses respectively, the number of IO interfaces is reduced, and the driving cost of the LED array is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of LED display, and in particular relates to a control device and method of an LED array and an LED display screen. Background technique [0002] LED is the abbreviation of light-emitting diode, which is a kind of semiconductor diode, which can convert electrical energy into light energy. Light-emitting diodes, like ordinary diodes, are composed of a combination of a P pole and an N pole, and also have unidirectional conductivity. When a forward voltage is applied to the light-emitting diode, the holes injected from the P region to the N region The electrons to the P region recombine with the electrons in the N region and the holes in the P region within a few microns near the PN junction, resulting in spontaneous emission of fluorescence. The energy states of electrons and holes in different semiconductor materials are different. The amount of energy released when electrons and holes recombine varies, and...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0626
Inventor 苗娇娇杨伟生陈育新冯俊杰高岩
Owner GREE ELECTRIC APPLIANCES INC