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Light-emitting diode (LED) wavelength correcting circuit

A circuit and wavelength technology, which is applied in the field of LED wavelength correction circuits, can solve the problems of LED backlight display brightness and wavelength inconsistency, achieve low cost, facilitate popularization and application, and improve the effect of correction accuracy

Active Publication Date: 2014-09-03
SHENZHEN CYT SEMICON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide an LED wavelength correction circuit, aiming to solve the problem that the LED backlight display brightness is inconsistent with the wavelength

Method used

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  • Light-emitting diode (LED) wavelength correcting circuit
  • Light-emitting diode (LED) wavelength correcting circuit

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] In the embodiment of the present invention, the brightness of the main primary color is adjusted through the main channel current source, and the wavelength of the main primary color is corrected through the other two primary color auxiliary channel current sources, so that the brightness of the LED is consistent with the wavelength, and the current adjustment unit is used to adjust the main channel current source and The current value of the auxiliary channel current source is adjusted to improve the correction accuracy.

[0017] The implementation of the present invention will be described...

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Abstract

The invention is applied to the field of light-emitting diodes (LED) display and provides an LED wavelength correcting circuit. The circuit comprises a main passage current source, two auxiliary passage current sources and a current adjusting unit, wherein the main passage current source is used for adjusting the brightness of a main base color; the two auxiliary passage current sources are used for correcting the wavelengths of the main base color; and the current adjusting unit is used for adjusting the current values of the main passage current source and the auxiliary passage current sources according to input current adjusting signals. The main passage current source is used for adjusting the brightness of the main base color, and the two auxiliary passage current sources are used for correcting the wavelengths of the main base color, so the brightness and the wavelength of an LED are consistent, and high fidelity of the color is realized. The technical scheme provided by the invention is easy to realize, is low in cost, and is beneficial for popularization and application in the field.

Description

technical field [0001] The invention belongs to the field of LED display, in particular to an LED wavelength correction circuit. Background technique [0002] At present, LED backlight display will gradually replace LCD products and become the mainstream of backlight display due to its advantages of high brightness, good uniformity and strong color expression. The so-called LED backlight display is to drive a plurality of LED light-emitting diodes arranged in a matrix through a current with a certain wavelength to form a combination of pixels with three primary colors, thereby generating light that can be recognized by the eye in different colors. However, the existing LED backlight display usually only uses the main channel current source to realize the brightness adjustment of the main primary color. The light of different wavelengths will attenuate or drift due to factors such as environment and aging, which will cause differences in LED brightness and wavelength, resulti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34H05B37/02
Inventor 文茂强
Owner SHENZHEN CYT SEMICON TECH CO LTD
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