Many people think that the pixels of TFT LCD Display are neatly arranged small squares, but this is not entirely true. The core of pixels is the combination and arrangement of RGB sub pixels. Let's break it down and understand it at a glance.
The pixel structure of TFT LCD Display is simply a "pixel array+RGB sub-pixel combination": the entire screen is a huge pixel grid, each grid is a pixel, and each pixel contains three sub pixels: R, G, and B. These three sub pixels are closely arranged to form a complete pixel unit that can display all colors.
Here is a key point to share with everyone: the smaller the size and more orderly the arrangement of sub pixels, the more sub pixels there are per unit area, and the higher the display clarity of TFT LCD Display; On the contrary, if the sub-pixel size is large and the arrangement is messy, even if the resolution is labeled high, the display will be blurry and blurred. The TFT LCD Display produced by ESEN strictly controls the sub-pixel size and arrangement accuracy to ensure that each sub-pixel is evenly distributed, laying the foundation for clear display.
In addition, the pixel structure of TFT LCD Display is also related to the driving method, but the core factor affecting clarity is the arrangement of RGB sub pixels - different arrangements result in different distribution, spacing, and combination logic of sub pixels, leading to significant differences in display effects. Let's focus on several mainstream arrangement methods and their impact on clarity.
Mainstream RGB sub-pixel arrangement: Each arrangement corresponds to different clarity performance
At present, there are three mainstream ways to arrange the RGB sub pixels of TFT LCD displays on the market. There is no absolute superiority or inferiority, only adaptation to different display scenarios. Let's compare their characteristics and clarity performance one by one, which is convenient for everyone to refer to when choosing.
1. RGB stripe: the most basic and universal, with stable clarity
This arrangement method is the most basic and common for TFT LCD displays, and it is also the mainstream arrangement method for ESEN's conventional TFT LCD displays. Simply put, it is "the three sub pixels of R, G, and B, neatly arranged in a stripe along the same direction". For example, in the horizontal arrangement, each row has R, G, B, R, G, and B circulating in sequence, and the vertical arrangement follows the same pattern. The overall arrangement is regular and symmetrical.
Its advantages are obvious: simple arrangement, mature technology, uniform distribution of sub pixels, stable display clarity, high color reproduction, no obvious jagged edges or color edges, and relatively controllable cost. It is suitable for most conventional display scenarios, such as industrial control screens, ordinary car displays, household display devices, etc.
The clarity of this arrangement mainly depends on the density of sub pixels - the denser the sub pixels, the higher the clarity. ESEN optimizes the sub-pixel density of the striped arrangement for mid to high end needs, allowing TFT LCD displays to display more delicate and meet conventional high-definition display requirements at the same resolution.
2. RGB delta arrangement: Cost saving, but slightly weaker clarity
Delta arrangement is a cost saving design method where the R, G, and B sub pixels are not arranged in neat stripes, but are distributed in a triangular (delta shaped) pattern. The three sub pixels form a triangular unit, which is then pieced together into an array of pixels for the entire screen.
The advantage of this arrangement is "space saving and cost saving". For screens of the same size, delta arrangement can reduce the number of sub pixels, lower production difficulty and costs. Therefore, many cost-effective TFT LCD displays adopt this arrangement. But its shortcomings are also very obvious: the distribution of sub pixels is not uniform enough, especially when displaying text and thin lines, it is prone to jagged edges, blurring and blurring, the clarity is slightly weaker than the striped arrangement, and the color transition is not as natural as the striped arrangement.
So delta arrangement is more suitable for scenarios with low clarity requirements and limited budget, such as low-end smart terminals and simple display panels; If it is a scene that requires high clarity, such as industrial control, high-definition car mounted, precision display, etc., ESEN does not recommend using this arrangement of TFT LCD Display.
3. RGB pentale: HD optimized version that balances clarity and color
Pentile arrangement is an optimized high-definition arrangement based on striped arrangement, and is also a commonly used arrangement for ESEN high-end TFT LCD displays. Its core feature is the "sub-pixel misalignment arrangement", where R, G, and B sub pixels are not strictly horizontally aligned, but distributed in a staggered manner, and the number of green sub pixels is appropriately increased - because the human eye is most sensitive to green, increasing the number of green sub pixels can improve visual clarity and color delicacy.
The advantages of this arrangement are prominent: at the same resolution, the sub-pixel utilization of the pentile arrangement is higher, the display is clearer and more delicate, the text edges are smooth without jagged edges, the color transition is natural, and it can reduce power consumption while ensuring clarity, adapting to high-end display scenarios such as high-definition car screens, industrial precision displays, high-end intelligent terminals, etc.
Its only shortcoming is that the process is relatively complex, and the cost is slightly higher than stripe and delta arrangements. However, for scenarios that pursue high-definition display experience, this cost investment is worthwhile, and it is also the arrangement method recommended by ESEN for high-end customers.