LED electronic display screen display uneven causes and solutions
LED electronic display screen display uneven causes and solutions
LED electronic display “point brilliant, piece of brilliant” is the pixel and module between the serious unevenness of a figurative analogy, a little bit of professionalism is the dust effect and mosaic phenomenon. LED full-color display technology has developed to the present day, the production process and control technology has been very mature, but in fact the LED electronic display in the actual use process is often difficult to avoid uneven phenomenon, giving consumers a very bad experience. Display in the actual use of the process, it is often difficult to avoid uneven phenomenon, giving consumers a very bad experience. So what exactly is the reason for this?
In fact, the root causes of uneven phenomenon are: the inconsistency of the LED performance parameters; LED electronic display in the production, device assembly precision in the process of the lack of; other electronic components of the consistency of the electrical parameters is not enough; module, PCB design is not standardized.
Among them, the inconsistency of the LED performance parameters of the main reason. These performance parameters are inconsistent mainly include: light intensity inconsistency, optical axis inconsistency, color coordinate inconsistency, the base color light intensity distribution curve inconsistency and attenuation characteristics are inconsistent.
How to solve the phenomenon of inconsistent LED performance parameters, the industry currently has two main technical ways: one is through the LED specifications parameters of the further breakdown, improve the consistency of the LED performance; the second is through the follow-up correction to improve the uniformity of the display.
Follow-up correction from the early module correction, module correction, the development of today's point-by-point correction. Correction technology from the simple light intensity correction, the development of light intensity color coordinate correction.
However, the follow-up correction is not a panacea, in which the optical axis inconsistency, light intensity distribution curve inconsistency, attenuation characteristics inconsistency, poor assembly accuracy and design irregularities can not be eliminated by follow-up correction, and even this follow-up correction will make the optical axis, attenuation, assembly precision inconsistencies worsen.
Therefore, through the practice I concluded that the follow-up correction is only to cure the table, and LED parameter subdivision is the root cause, is the mainstream of the LED electronic display industry in the future.
And to the display uniformity and clarity of the relationship, the industry is often a misunderstanding of the understanding of the resolution instead of clarity. In fact, the display clarity is the human eye on the display resolution, uniformity, signal-to-noise ratio, brightness, contrast and other factors integrated subjective feeling.
Simply reduce the physical pixel spacing to improve resolution, while ignoring the uniformity, to improve clarity is unquestionable Imagine a serious dust effect and mosaic phenomenon display, even if it is physical pixel spacing and then small, high resolution, it is impossible to get a good image clarity.
Therefore, in a sense, the current constraints on LED electronic display screen clarity improvement is the main cause of uniformity rather than physical pixel pitch.
So manufacturers or individuals in the production of led electronic display screen device as far as possible to choose the same batch of module power supply wiring control card, in order to be able to affect the various LED electronic display screen display unevenness may be reduced to a relatively low value, so that in a certain sense can be produced to watch the clarity of the led display screen higher.
In fact, the root causes of uneven phenomenon are: the inconsistency of the LED performance parameters; LED electronic display in the production, device assembly precision in the process of the lack of; other electronic components of the consistency of the electrical parameters is not enough; module, PCB design is not standardized.
Among them, the inconsistency of the LED performance parameters of the main reason. These performance parameters are inconsistent mainly include: light intensity inconsistency, optical axis inconsistency, color coordinate inconsistency, the base color light intensity distribution curve inconsistency and attenuation characteristics are inconsistent.
How to solve the phenomenon of inconsistent LED performance parameters, the industry currently has two main technical ways: one is through the LED specifications parameters of the further breakdown, improve the consistency of the LED performance; the second is through the follow-up correction to improve the uniformity of the display.
Follow-up correction from the early module correction, module correction, the development of today's point-by-point correction. Correction technology from the simple light intensity correction, the development of light intensity color coordinate correction.
However, the follow-up correction is not a panacea, in which the optical axis inconsistency, light intensity distribution curve inconsistency, attenuation characteristics inconsistency, poor assembly accuracy and design irregularities can not be eliminated by follow-up correction, and even this follow-up correction will make the optical axis, attenuation, assembly precision inconsistencies worsen.
Therefore, through the practice I concluded that the follow-up correction is only to cure the table, and LED parameter subdivision is the root cause, is the mainstream of the LED electronic display industry in the future.
And to the display uniformity and clarity of the relationship, the industry is often a misunderstanding of the understanding of the resolution instead of clarity. In fact, the display clarity is the human eye on the display resolution, uniformity, signal-to-noise ratio, brightness, contrast and other factors integrated subjective feeling.
Simply reduce the physical pixel spacing to improve resolution, while ignoring the uniformity, to improve clarity is unquestionable Imagine a serious dust effect and mosaic phenomenon display, even if it is physical pixel spacing and then small, high resolution, it is impossible to get a good image clarity.
Therefore, in a sense, the current constraints on LED electronic display screen clarity improvement is the main cause of uniformity rather than physical pixel pitch.
So manufacturers or individuals in the production of led electronic display screen device as far as possible to choose the same batch of module power supply wiring control card, in order to be able to affect the various LED electronic display screen display unevenness may be reduced to a relatively low value, so that in a certain sense can be produced to watch the clarity of the led display screen higher.