A Three-Step Guide to Quickly Understanding Resolution Terms

A Three-Step Guide to Quickly Understanding Resolution Terms

When selecting or evaluating a display, it’s essential to understand key terms such as pixels, PPI, and resolution. These concepts form the foundation of how images and text appear on LCD screens.
Whether you’re choosing a display for marine equipment, bathroom interfaces, or other industrial applications, mastering these fundamentals will help you make informed decisions. Let’s break it down step by step.

1. Pixels — The Building Blocks of Images

Before diving into the concept of resolution, it’s important to understand what a pixel is.
A pixel is the smallest unit of a digital image, typically composed of subpixels in RGB (Red, Green, Blue) colors. LCD display combine thousands—or even millions—of pixels to produce images.

The term “pixel” comes from a combination of “picture” and “element.”
The size of each pixel depends on the physical dimensions of the display and its resolution.
Across LCD displays ranging from 2 inches to 15 inches, pixel density directly influences image clarity—the more pixels a display has, the sharper the image.

For industries requiring high-resolution and high-precision visuals—such as marine navigation systems or bathroom control interfaces—pixel clarity plays a vital role in ensuring accurate information display and safe operation.

2. PPI — Pixels Per Inch

Once you understand pixels, the next key concept is PPI (Pixels Per Inch), which measures the number of pixels per inch of a display.
A higher PPI means more pixels are packed into each inch, resulting in sharper and finer images.

PPI (pixel density) is especially important in industrial applications, such as marine instruments, bathroom control panels, and other professional environments that require exceptional readability and precision.
Even when two displays have the same resolution, their PPI values can differ due to screen size variations.
Smaller industrial screens with higher pixel density provide more detailed visuals—crucial for control interfaces and data visualization.

Formula for Calculating PPI:

PPI=W2+H2DPPI = \frac{\sqrt{W^2 + H^2}}{D}

PPI=DW2+H2

Where:

• W = display width in pixels

• H = display height in pixels

• D = diagonal size in inches

Example:
If a display resolution is 1920×1080 and the diagonal size is 10 inches,

PPI=220.29PPI = 220.29

$$PPI=220.29$$

This means there are approximately 220 pixels per inch—a level of precision ideal for marine and bathroom industry applications that demand high clarity and visual accuracy.

3. Resolution — The Key to Display Clarity

After understanding pixels and PPI, we can explore resolution.
Resolution refers to the total number of pixels a display can show, typically represented as width × height, for example, 1920×1080.
Resolution directly affects image sharpness and detail.

Resolution is closely tied to pixel density (PPI).
Even if two displays share the same resolution, their physical screen size affects image clarity:

• A smaller screen with the same resolution has higher PPI → sharper images

• A larger screen with the same resolution has lower PPI → less sharp images

For industrial displays used in marine systems, bathroom electronics, or precision instruments, selecting the right resolution is critical for performance and readability.

Common LCD Display Resolutions and Their Applications

DINGTouch Custom LCD Solutions

At DINGTouch, we offer a wide range of small-size LCD displays from 2.4” to 15.6”, covering multiple resolutions for various industrial needs.
Whether used in marine displays, bathroom electronics, or portable diagnostic equipment, our screens ensure optimal clarity and performance.

Customization Options Include:

• Size Range: 2.8” to 65”

• Interface Support: I2C / USB / SPI / RS485 / UART

• Structure Types: G+G, G+F+F, Full Lamination / Air Bonding

• Enhanced Features: High brightness, anti-glare, waterproof, dustproof, vibration-resistant

• Special Applications: Glove touch support, antibacterial coating, wide temperature range design

Empowering Display Innovation with DINGTouch

DINGTouch is committed to delivering high-quality, customizable, and reliable touch display solutions.
We have successfully implemented numerous projects across medical equipment, industrial control, smart homes, commercial display, and automotive systems.

From concept design and prototype development to mass production, we offer a one-stop service tailored to your application needs.
Through precision customization and expert technical support, DINGTouch helps clients achieve differentiation and premium performance in every display solution.

For personalized customization, unique specifications, or complete touchscreen display solutions, contact:
DINGTouch Technical Team: sales@szdingtouch.com

DINGTouch — Delivering clarity, precision, and performance for every display.

Ready to Build Your Outdoor Display Solution?

Get in touch with us at sales@szdingtouch.com. Our expert engineers will help you design a cost-effective, tailored solution to meet your project’s exact specifications.

DINGTouch:Committed to continuous innovation and improvement of product quality to meet customers' high requirements and expectations.

DINGTouch is a manufacturer that provides high quality touch screen panels. Focus on the design, manufacturing and sales of touch screen panels, and are committed to providing customized solutions that satisfy customers.

DINGTouch: In the process of customizing touch screen panels, we focus on close cooperation and communication with customers. Understanding customers' needs and providing customized solutions will meet customers' individual needs. The company's products are favored by customers for their high quality and reliability, and provide them with the best touchscreen panel solutions.

At DINGTOUCH, we are the world's leading touchscreen manufacturer, helping businesses around the world take advantage of this exciting technology. For more information, please visit the home page now.

Find the DINGTouch technical team to achieve the success of your company's new project.

How to choose touch screen customization?

DINGTouch is a company specializing in the R&D and production of touch screen technology, headquartered in Shenzhen, China. As a professional touch screen supplier, DINGTouch is committed to providing high-quality, stable and reliable touch screen products to meet the diverse needs of customers. We continue to carry out technological innovation and product optimization to ensure that its touch screen products have good sensitivity, accuracy and durability.

In addition to the products themselves, we also focus on cooperation and communication with customers, and are committed to providing customized solutions and excellent after-sales services. Through continuous efforts to improve product quality and customer satisfaction, we have established a good reputation in the touchscreen industry and won widespread market recognition.

What DINGTOUCH can do:

• PCAP  maximum size 65”

• Multi-touch (Touch screen can be customized to your needs.)

• Optical bonding service/air bonding

• LCD interface: HDMI/RGB/MIPI/LVDS/EDP, etc.

• PCAP interface: IIC/USB interface

• CTP can customize the cover glass surface treatment process AG (anti-glare), AR (anti-reflection), AF (anti-fingerprint), waterproof, and glove touch

• Supports 0.55 mm-12 mm coverslip touch.

• Support operating temperature: -40℃-90℃.

Dingtouch Industrial Capacitive Touch Screen Manufacturer

In conclusion, Dingtouch as a professional touch screen manufacturer with more than 10 years touch screen experience.We have many capacitive touch screen. Such as 5  inch touch screen,7 inch touch screen,10.1inch touch screen,15 inch touch screen,15.6 inch touch screen,17 inch touch screen,18.5 inch touch screen,19 inch touch screen,21.5 inch touch screen,32 inch touch screen, However, we also welcome to customize your own touch screen . Contact our team today to learn what capacitive touch screen are best for our retail business needs.

Contact us NOW! sales@szdingtouch.com

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DINGTouch — Custom Touch Display Solutions Expert

Every touch, clear and precise, ready for any environment.