Knowledge about Round Display
round display have attracted people’s attention because the round shape is different from the traditional square lcd display, but the production process of the round display will be more difficult than the square display.
In recent years, due to the rapid development of the smart wearable industry and the Internet of Things industry, people are no longer satisfied with rectangular displays. There are many product designs that require the cooperation of round displays, such as smart watches with round dials, robot eyes, smart alarm clocks, and smart knob displays. screen, etc., if it is replaced by a square display, it will greatly reduce the aesthetics of the product. So circular screens and circular displays with touchscreens were made.
1.28-inch Circular lcd panel is mainly applied to the smart wear market, with low cost and rich color performance.
1.3-inch 320x320 resolution circular display, mipi interface, IPS display mode, can add capacitive touch display.
2.1-inch Circular lcd panel is mainly applied to the smart home market, larger size leads to better display effect
3.4-inch 800x800 resolution circular display, mipi interface, IPS display mode, ZIF connector.
The first modern smartwatch with a round display was the Moto 360 released in 2014. Since then, round displays have become a popular choice for smartwatches, especially for those looking for a more traditional look.
If you are planning to use a round display, you need to pay attention to the following: the size of a round display will look larger than a square display of the same size, and the shape of a round display is not a perfect circle. Generally, there are three shapes:
The first is octagonal: This round display has a circular display area, but the shape is not. This design is conducive to improving the efficiency and yield of cutting.
The second is the racket shape: this round display is shaped like a tennis racket. This is because there are many circuit lines that need to be arranged, so a circle cannot appear. This kind of design is close to a circle, and has better economy, which is the design that is widely used now.
The third is circular: This round display has a near-perfect circular shape and is the best round display available. This design requires a more complex process, so it is often used on high-resolution circular displays to obtain a higher price.
Harmony Optoelectronics is a specialist in round displays. The existing round display products are:
And we also matched each round display with a capacitive touch screen, so that we can increase the application market of the round display, not just to display content, but also to increase the man-machine interaction.
Given these advantages, why were circular screen made later than traditional square ones?
The answer is that circular lcd display can be more difficult to design and produce than square ones:
Problems in the design stage of the round display:
1.The TFT design of round display is more difficult than that of square display.
The opening and closing of each row of pixels in TFT LCD is controlled by the GATE line. Because of the shape of the round display, the corresponding TFT line is also round. The number of pixels in each row is inconsistent, which will lead to differences in the voltage and current distributed in each row, Results in inconsistent display effects. The TFT line of the circular display requires loading compensation for each line to ensure consistent screen display.
2.Complex adhesive packaging process and low efficiency of round display:
TFT LCD display requires the use of sealant to adhesive the TFT substrate and the color filter substrate, and then fill the liquid crystal in the middle. Because the shape of the round display requires the sealant to be coated into a circle, because the glue coating equipment uses a servo motor to control the movement of the glue nozzle, the speed of linear movement is much faster than that of the curve, so the production efficiency of the circular display is also low.
3.Low utilization rate of round display:
Each round display is cut from the larger display substrate, and there is more free space between the round display and the round display, while traditional square TFT LCDS fit well together, so the use of the round display is lower.
Square display arrangement
The arrangement of the round display
Difficulties in the production and manufacturing process of round display:
1.The round display is more difficult to cut and the yield is low
Traditional square displays cut from large display substrate, only need to cut along the straight line, cutting efficiency is very high, and yield is good. The circular lcd display needs to be cut along the display arc, can not use the traditional cutting equipment, can only use CNC equipment and laser cutting machine, each time can only cut a round display, so the efficiency is very low, and in the process of yield is much lower than square display.
2.It is difficult to process the materials needed for the production of round display
The material required for round display is also different from that for square display, the polarizer is separated by cutting, because the edge of the polarizer after cutting will have burrs and residues, need to use edge grinding machine to remove these residues, the traditional square polarizer only needs to grind four edges, and the circular polarizer needs a special edge grinding machine to complete, and low efficiency.
3.The production process of circular display requires high precision of equipment
For the production process, the process of attaching the polarizer to the circular display is also difficult, because in the process of attaching can only use the camera positioning machine attached, otherwise it will be biased. The assembly process of backlight is also similar to the attachment of polarizer, requiring high-precision equipment to ensure the alignment accuracy.
Advantages of Round Displays
- Aesthetics: round displays are aesthetically pleasing, especially for those looking for a more traditional or classic look. They offer a more elegant and refined look than rectangular displays.
- Visibility: round displays offer better visibility than rectangular displays, especially in bright sunlight. Larger display area for the same size, which makes the display easier to read in bright conditions.
- Improved user experience: round displays can improve user experience by allowing more natural gestures, such as rotating bezels. This can make the device easier and more intuitive to use.
- Larger display: round display can provide a larger display area than a rectangular display of the same size. This is because the round shape allows for more space to be used around the edges of the display.
Use Cases for round displays
- Smartwatches: round displays have become a popular option for smartwatches, particularly for those looking for a unique and compact design. They offer a range of features, including fitness tracking, notifications, and voice commands.
- Fitness Trackers: round displays are also popular in fitness trackers, as they can allow for a more natural and comfortable fit on the wrist. They can be used to track a range of fitness metrics, including steps taken, distance traveled, calories burned, and heart rate.
- Navigation Systems: round displays can be useful for navigation systems, particularly in vehicles. The rounded corners can make it easier to view maps and directions, and the compact design can allow for the display to be integrated into the dashboard more easily.
- Industrial Displays: round displays can also be used in industrial displays, particularly in applications where space is limited. The compact design can allow for more efficient use of space, and the improved visibility can be particularly useful in outdoor or bright environments.
Our company has fully automatic LCD display production equipment, high-precision polarizing plate attachment equipment and backlight assembly equipment, has been able to produce high-quality circular display stably, and has a perfect quality control system, to ensure that the display to your hand is of high quality.
On the basis of the display, the circular touch screen corresponding to the circular display is also developed. Through OCA adhesion to each other to remove the air layer, the perfect display effect can be obtained. In addition, you can also add the coating or surface treatment you need on the touch screen, such as antibacterial coating, anti-glare coating, anti-fingerprint coating, anti-reflection coating, etc.