New iPad Pro users report that OLED screen displays "grainy" phenomenon

[CNMO science and technology news] Recently, several users on foreign forums reported that the OLED screen of the new M4 iPad Pro showed visible static grain patterns.

According to the user's description, this grainy pattern can adjust the screen brightness to a medium low level in a dark environment, and is most obvious when viewing content with gray or soft colors. Some users compare this display effect to the visual noise in photos taken under high ISO settings. It is unclear whether this is a real display defect. In general, OLED screens may exhibit visual graininess or "screen gate effect" due to multiple factors in the design and manufacturing process.

A single sub-pixel of an OLED screen may vary in size and shape, resulting in uneven screen texture or graininess. This is usually more apparent on larger screens. The deposition of organic materials may also affect the uniformity of light emission. In addition, OLED screens control brightness at the pixel level, and power management technology may cause slight changes in brightness on the screen. This sometimes appears as a grainy effect in low light environments or when displaying uniform colors.

It is worth noting that Samsung S24 Ultra has exposed similar granular screens before. Samsung provides screens for Apple's new 11 inch iPad Pro, while LG displays provide screens for the 13 inch version. According to a report from South Korea in March, Samsung encountered difficulties in the production of 11 inch panels and could not meet Apple's orders. This shortage led Apple to transfer some orders for small panels to LG Display.

So far, most reports involve the 11 inch iPad Pro, but one or two mention the 13 inch version, so it is unclear whether the potential defect is specific to a particular OLED panel supplier. These reports seem to be limited to the new iPad Pro equipped with standard glass options, while the version with nano texture screen has not received relevant reports yet.