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Full color LED (Light-Emitting Diode) display screen

A LED array and display driving technology, applied to static indicators, instruments, etc., can solve problems such as changes in luminous brightness, adjustment of luminous brightness, and inappropriateness

Inactive Publication Date: 2013-01-30
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, the luminous brightness of LED is directly proportional to the passing current. However, as the current changes, not only the luminous brightness will change, but also the luminous color will shift. Therefore, for full-color LED displays, it is not suitable to pass through Change the method of LED current to adjust its luminous brightness

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  • Full color LED (Light-Emitting Diode) display screen
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  • Full color LED (Light-Emitting Diode) display screen

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] The system composition of the present invention is as figure 1 shown. Functionally, it can be divided into a data processing module and a display driver module, the two modules are relatively independent, and data transmission is performed between them through a double-ended RAM (10). The data processing module includes units such as processor (111), video signal interface (112), system Flash (113) and system memory (114), and completes the reading of video input signal, data preprocessing, PWM serialization of data and PWM sequence recombination and other functions; the display driver module includes a data reading and sending module (121) and a red, green and blue LED array (122). The data reading and sending module reads data from the double-ended RAM and writes it into the LED array.

[0037] The data processing module is an embedded computer system in a...

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Abstract

A full color LED (Light-Emitting Diode) display screen and a display driving method are provided. The full color LED display screen is composed of a data processing module and a display driver module, and data transfer between the data processing module and the display driver module is realized through a dual-end RAM (Random Access Memory). The data processing module is an embedded system and used for completing the functions of video input signal reading, data preprocessing, data PWM (Pulse Width Modulation) serialization, PWM sequence recombination, writing of PWM recombined data in the dual-end RAM and the like. The display driver module is composed of a red-green-blue tri-color LED array and a data reading and transmitting module; each pixel is composed of red, green and blue three LED units; each LED unit is composed of a circuit for controlling on and off of the LED through a D trigger; the display driver module orderly and circularly reads values from the dual-end RAM and writes the values in the LED array so that the values are latched by the D trigger of the corresponding LED unit; and the PWM control function on the brightness of the LED is realized in a simulation way.

Description

technical field [0001] The invention relates to a full-color LED display system, in particular to an LED display processing method and a display driving method. Background technique [0002] With the development of information technology, LED display has many advantages such as bright colors, wide viewing angle range, long life, high reliability, etc. be more and more widely used. From early monochrome to full-color, from simple text display to complex video display, the picture is more and more perfect, and the function is more and more powerful. [0003] For the display of color images, the most commonly used method is to use the three basic colors of red, green, and blue, and synthesize other colors in human vision by adjusting the intensity of the three colors. For a full-color LED display, each pixel is composed of red, green, and blue LEDs. Theoretically, the luminous brightness of LED is directly proportional to the passing current. However, as the current changes,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 李相国
Owner HENAN UNIVERSITY OF TECHNOLOGY