نحوه حل روشنایی متفاوت رنگ صفحه نمایش چراغ صفحه نمایش?

یک صفحه نمایش با کیفیت کامل به رنگ LED باید با دماهای مختلف سازگار باشد, هوای متفاوت, and can be used normally in various occasions such a stage led concert led display and waterproof outdoor led video wall. it also has a good effect for far and near light. especially in large concerts, special effects light should be exceptional, but sometimes we will find the brightness of led. different, what is the reason for the inconsistency of the brightness of full-color led display? based on years of experience, the author summarizes the following three factors which can lead to the inconsistency of the brightness of full-color led display.

1. luminescent elements

the luminous elements of full-color led display screen, namely led light-emitting tubes, are inevitably different in brightness during the production process. but the countermeasure adopted by the manufacturers of led electronic display screen is to classify after production. the smaller the brightness difference between the adjacent two gears, قوام بهتر, but the lower the yield and the higher the inventory will be. از این رو, each manufacturer controls the brightness difference between two adjacent gears at 20%.

2. driving elements

the driving elements of full-color led display are usually constant-current driving chips, مانند mbl5026. these chips include 16 constant-current drive outputs, which can be set by resistance. the output errors of the same chip are controlled within 3%, while the output errors of different chips are controlled within 6%. it is normal that 25% brightness errors occur among the pixels of the full-color led display. if the led light emitting tube is not a full-color led display of the same level and type, the brightness errors will rise to more than 40%.

علاوه بر این, it is worth noting that the inconsistent brightness of full-color led display screen is the fundamental reason for the formation of flower screen. it can not be corrected by post-proofreading equipment, as long as it is achieved by the production and manufacturing process of led display manufacturers. بنابراین اگر صفحه ای با روشنایی متناقض خریداری می کنید, لطفا برای ارائه مشکل با ارائه دهنده خدمات یا تولید کننده خود تماس بگیرید.

3. صفحه نمایش در فرایند تولید با مواد مخلوط شده است, و دسته های مختلفی از ماتریس نقطه استفاده می شود.

چگونه می توان تفاوت رنگ را حل کرد صفحه نمایش صفحه نمایش الکترونیکی?

روش اول تغییر جریان جاری شده از طریق لامپ است. بطور کلی, جریان کار مداوم لوله پیشرو در مورد است 20 مامان. به جز اشباع سرخ قرمز, روشنایی سایر لامپها اساساً متناسب با جریان موجود در آن است.

the second method is to use the visual inertia of the human eye and pulse width modulation to achieve gray level control, یعنی. تغییر پهنای پالس نور (چرخه کار). as long as the cycle of repeated lighting is short enough (یعنی, فرکانس تازه سازی به اندازه کافی بالاست), the human eye can not feel the fluorescent pixels shaking. زیرا مدولاسیون عرض پالس برای کنترل دیجیتال مناسب تر است, almost all led electronic display screens use pulse width modulation to control gray level in today’s computer-based and led display content.