What Makes a High-Quality and Affordable LCD Display?

Jan 24, 2022 | Articles

Outlines:

1. The Difference in b/w Quality And Performance

1.1  Cosmetic

1.2  Electrical

1.3 Performance

2. Developing a Well-Defined Quality Assurance Process

2.1 Qualification

2.2 Sampling

2.3 Final Assembly Test

2.4 Process 

3. What Are Quality-Related Aspects to Consider When Buying an LCD Display

4. You Should Do Your Homework Before Buying

5. Conclusion

 

Are you looking forward to getting a high-quality, advanced and affordable LCD display but do not know what makes it high quality?

Today we will discuss some essential things that you need to know like quality vs. performance factors, developing a well-defined quality assurance process, and quality-related aspects that would be important when buying an LCD display.

A high-quality and affordable LCD display is necessary for fully managing end-user cases. Liquid crystal displays with defects and cosmetic deficiencies can only spoil your reputation with your buyers. However, people are often confused with the terms “performance”  and “quality,” which can lead to incorrect questions in their purchase decisions.

This article will explore the difference between these two terms and answer the question, What makes a high-quality and affordable LCD display?

1. The Difference in b/w Quality And Performance

In this part, we will talk about both performance and quality. 

Performance is an area of quality-focused display elements that the customer would want to see and interact with. 

Quality is about the manufacturer’s proficiency to meet agreed-to-all specifications and requirements. It’s about defining what the product is supposed to do, then producing the product to do that perfectly and consistently.

 

The-difference-in-B/W-quality-and-performance

Additionally, the quality typically contains three main areas:

1.1 Cosmetic

Cosmetic includes some items such as spots, missing pixels, scratches, LCD glass colors, pixel, backlight color, and other prominent or physical defects on the surface. There could also be wrongly assembled components or poorly fused joints on a craft level. 

LCD-cosmetic

1.2 Electrical 

Electrical Is the product operating at the correct voltage? Is the LCD over-driven or under-driven? Is it drawing the right amount of power?

Voltage-of-LCD

1.3 Performance

Operating temperature, response time, reliability, LED lifetime, contrast, brightness, color gamut, and viewing angle are Example aspects of performance.

Customers may have their unique requirements involving drop-test criteria, specific mechanical limitations, and electrostatic discharge (ESD) beyond these areas.

Performance-of-LCD

2. Developing a Well-Defined Quality Assurance Procedure

Designing a high-quality LCD display means that all quality requirements are fulfilled. To get this quality, the manufacturer needs to have a well-defined quality assurance (QA to accomplish this) process. It’s how to consistently meet all the quality requirements.

Developing-a-well-defined-quality-assurance-procedure

Here are the specific QA process areas you should know:

2.1 Qualification 

Qualification is the initial testing of the new product for every performance factor, including contrast, vibration, and temperature cycle.

Qualification-of-LCD

2.2 Sampling

It is very important to test a predetermined selection of displays to ensure consistency. This may be completely random, including every lot, some other sampling method depending on the sampling plan. In addition, the factors tested for the samples of the product could include every requirement or only a select few.

Sampling-of-LCD

 2.3 Final Assembly Test 

What is being tested after the display is fully assembled? 

  • Functionality,
  • cosmetic defects, 
  • voltage, 
  • all of the above areas? 

All the above factors are often determined by the product, as some require more strict testing than others.

2.4 Process 

What is the documentation, training, tools to ensure that each step of the manufacturing process is as simple and as consistent as possible? And what other processes are put in place to ensure that each display produced consistently meets the original design specification?

There could also be testing throughout the manufacturing process. For example, at PDI, we test 300%—including tests along the manufacturing path to catch any defects early on and avoid adding value to wrong parts, as well as burn-in tests that entail running displays for a certain amount of time at higher temperatures to catch any latent defects.

Process-of-developing-LCD

3. What Are Quality-Related Aspects to Consider When Buying an LCD Display?

From a customer perspective, there are several questions you need to ask your manufacturer before purchasing LCD displays from them:

1) What is the expected defect rate for the type of your desired display?

2) What is the test process of manufacturers? 

For example, 

  • What is tested? 
  • How are they tested? 
  • And how often are they tested?

3) What is the return merchandise authorization (RMA) process of the manufacturers? 

For example,

  • What happens when there is a defect?
  • Who pays for the product and shipping? 
  • What are the responsibilities on both sides? 
  • Will, there be a corrective action for every defect?
  • Or is there a defect-rate threshold that needs to be reached first?

What-are-quality-related-aspects-to-consider-when-buying-an-LCD-display

4. You Should Do Your Homework Before Buying

Delivering high-quality products is essential for maintaining good, long-term relationships with your customers. And that starts with ensuring your manufacturers produce parts that meet your quality requirements, which means getting clear answers to the questions we described above.

5. Conclusion

Do you need a new supplier that understands your unique display needs and can produce custom displays that address them?

We are a professional LCD manufacturer, we have lots of partners, so we can get reasonable prices for our customers. We have a strict quality control system, that’s why we can provide high-quality products. 

Now let us help. Contact us today.

 

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