There are some differences between screen testing and inspection in terms of purpose and method.
Screen testing is mainly to evaluate the performance and quality of the display screen, usually through special instruments, equipment to design and implement reasonable experimental methods to obtain information related to the screen under test. The test may include a number of aspects such as brightness, contrast, color accuracy, resolution, viewing angle, response time, and display uniformity. The purpose of testing is to ensure that the screen performs as expected in real-world use, providing manufacturers and consumers with data on the performance and quality of the screen.
Screen inspection, on the other hand, is a quantitative process of non-quantitative physical objects, mainly focusing on whether the screen has defects or problems. Inspection may involve an examination of the screen's appearance, physical structure, functionality, etc., to determine if the screen meets the standards or specifications for use. The purpose of the inspection is to ensure that the screen is not damaged, faulty, or defective, so as to guarantee the quality and reliability of the product.
Screen testing is the process of evaluating the performance and quality of a display to ensure that it performs as expected in real-world use. Screen tests typically include the following:
Brightness and contrast test: Measure the brightness level and contrast of a display to evaluate its display effect and image quality. Brightness refers to the intensity of light emitted by the screen, while contrast refers to the difference between the brightest and darkest colors displayed on the screen. These parameters are important for evaluating the visibility and clarity of the screen.
Color Accuracy Test: Test the color accuracy and color gamut range of the display to evaluate its performance in terms of displaying colors. Color accuracy refers to the difference between the colors displayed on the screen and the actual colors, while the gamut range refers to the range of colors that the screen is capable of displaying. These parameters are important for evaluating the color reproduction ability and color expressiveness of the screen.
Resolution test: Tests the resolution of a display, i.e., the number of pixels on the screen, to evaluate its ability to display detail and clarity. The higher the resolution, the greater the number of pixels displayed on the screen and the sharper the image displayed.
Viewing angle test: Test the visibility and color fidelity of the display at different viewing angles to evaluate its performance at different angles. The angle of view is the maximum angle between the screen and the screen normal, and the larger the angle of view, the wider the viewing range of the screen.
Response time test: Test the response time of the display, which is how quickly pixels on the screen can switch from one color to another, to evaluate its performance when displaying dynamic content. The shorter the response time, the faster the pixels on the screen will be switched and the dynamic content displayed will be smoother.
Display Uniformity Test: Test the brightness and color uniformity of the display across the screen to evaluate whether its display effect is consistent. If there is a difference in brightness and color on the screen, it may result in a poor display.
Screen inspection is the inspection of the quality and performance of a display screen to ensure that it is free of damage, malfunction, or defective products and meets the standards or specifications for intended use. Screen detection can include the following:
Dead pixel detection: A dead pixel is a pixel that permanently displays only the same color on the display. To detect dead pixels, it is common to set the screen to a completely black or other solid background, and then carefully observe whether dots appear on the screen that are different from the background color. When the screen is displayed in solid color, it is easy to find out whether the screen has problems such as dead pixels and light leakage.
Color accuracy detection: Checking the color accuracy of a display is an important part of screen detection. This usually involves using a color calibration tool or software to measure the difference between the colors displayed on the screen and the standard colors. By comparing the displayed colors with the actual colors, you can evaluate the color accuracy of the screen.
Resolution and clarity detection: Resolution refers to the number of pixels on the screen, while clarity refers to the sharpness and detail of an image. By displaying high-resolution images or text, the resolution and clarity of the screen can be evaluated to ensure that the images and text are displayed clearly.
Viewing angle detection: Inspect the visibility and color fidelity of the screen at different viewing angles. Evaluate the viewability and color shift of the screen by looking at it from different angles to ensure consistent screen performance at different angles.
Brightness and contrast detection: Detect the brightness and contrast of a screen to evaluate its visibility and image quality in different lighting conditions. Brightness and contrast settings are critical to screen performance in both indoor and outdoor use cases.
Physical Damage Detection: Inspect the surface of the screen for scratches, chips, or other physical damage. These damages may affect the display and longevity of the screen.