Reliability Management Of LED Display In M Company

M company is a traditional household appliance enterprise.With the upgrading of individualized design of household appliances,the integration of different design elements and functions is becoming more and more abundant,among which LED display screen is one of the applications of intelligent system control terminal.However,the quality and reliability of the LED display screen restricts the large-scale application of the technology,especially the large-size display screen.In this paper,the key concept,significance and function of reliability engineering are expounded,which is also the theoretical basis of reliability work.This paper introduces the structure characteristics and application scene of LED display screen products of M Company,summarizes the common quality problems of these products and the present quality situation of these products.Most of the product failures are due to the defects in design,while the deficiencies in design are more due to the lack of awareness of the product application scenarios and their risks,resulting in the early stage can not be avoided.With the increase of the number of products put into the market,the application environment is more diversified,and the types and quantities of faults are more complex.In the process of failure analysis,emphasis should be placed on the analysis and improvement of the critical few types in the fault list,which will focus more on the failure analysis and reduce the overall maintenance rate of the products efficiently.However,in the process of carrying out failure analysis,the systematic management of analysis program,analysis method and analysis result can help to find out the root cause of product failure more deeply,and thus improve the clear direction for R & D improvement.In addition to the analysis of outfield faults,the recurrence of infield failures and the verification of reliability life are key tasks to enhance product confidence and verify design effectiveness,especially for the six-year warranty cycle of the whole machine.It is also necessary that the life of each key component can meet the requirements.At the same time,the combination of field fault analysis and laboratory reliability test can provide many improvement points for R & D.In order to avoid the recurrence of the same problems,it is necessary to integrate the failures and improvements found into the management process of new product development and the quality control system,so as to enhance the risk prevention ability of the system and avoid serious quality risks.