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Method for regulating brightness of LED display screen

A technology of LED display and brightness adjustment, which is applied to static indicators, cathode ray tube indicators, instruments, etc., and can solve problems such as insufficient brightness adjustment, glare, and insufficient brightness

Inactive Publication Date: 2010-10-20
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

[0004] In order to solve the problem that the maximum brightness of the existing LED display screen is not enough or the brightness adjustment is not in place, causing the problem that it does not look bright enough in the daytime or looks dazzling at night; it provides a method that can adjust the brightness of the LED display screen, This adjustment method can make the LED display screen obtain a satisfactory reading effect under various ambient light background conditions.

Method used

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  • Method for regulating brightness of LED display screen
  • Method for regulating brightness of LED display screen
  • Method for regulating brightness of LED display screen

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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0020] As described above, people obtain more than 90% of information from the eyes. The retina of the human eye is a transparent film with visual photoreceptor cells-cone cells and rod cells. There is a particularly dense cone cell area in the central part of the retina, which is yellow in color and is called the macula, with a diameter of about 2-3mm. There is a small depression in the center of the macula, called the central fossa, which is the most sensitive place for vision. Its horizontal diameter is about 0.3mm, its vertical diameter is about 0.2mm, and its corresponding field of view is about 3°, almost all of which are made of pyramidal cells. Take up. A large number of research results on the human eye show that cone cells and rod cel...

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Abstract

The invention discloses a method for regulating the brightness of an LED display system. The brightness regulation of an LED is realized by regulating the duty ratio of the LED, thereby realizing the control of the integral brightness of the LED display screen. The method obtained according to the technical scheme can obtain more satisfactory recognition and reading effects under background conditions of various ambient lights, and better plays a role of information release of the LED display screen in expressway and city traffic.

Description

Technical field: [0001] The invention relates to a brightness adjustment method of a display screen, in particular to a method capable of adjusting the brightness of an LED display screen. Background technique: [0002] More than 90% of people's information comes from eyes. As a visual information display device, LED display has variable information, rich colors, wide-range adjustable brightness, low power consumption, high reliability, With technical advantages such as long life, the all-weather display mode of LED display is irreplaceable by any kind of outdoor media at present. It has been more and more widely used in the release of outdoor visual information and is playing an increasingly important role. [0003] For the information display of the LED display, the issues that must be considered are: color, clarity, dot pitch, viewing angle, primary color gray scale, scanning frequency, brightness adjustment, etc. Due to the large range of changes in the outdoor ambient l...

Claims

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Application Information

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IPC IPC(8): G09G3/32G09G5/10
Inventor 龚兆岗樊灵晶曹娜
Owner SHANGHAI MARITIME UNIVERSITY
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