Which Round Display You Should Choose?

2.8inch round ips tft lcd display 480*480 rgb interface st7701s 2.76" lcd screen

In our daily life, most LCD products are square or rectangular, while relatively speaking, circular screens are relatively few. However, in recent years, with the change of people’s aesthetics and the emergence of various personal customization needs, circular LCD screens are also increasingly used in various fields, such as smart watches, smart wall clocks, electric vehicle instruments, automobile display instruments and so on.

In the market, there are mainly small-scale application scenarios, and different applications require different displays. So how to choose a screen suitable for your own product is particularly important. Next, I will briefly introduce the existing circular screens on the market that are already in mass production, their characteristics, the use of terminals and the existing problems of circular screens

Description

In fact, the display principle of the round LCD display is the same as that of the conventional rectangular and square LCD screens. Only through the production technology of the LCD glass and the adjustment of the screen parameters, the circular LCD screen can display normally in the circular state. The key factor that plays a decisive role is the design and formulation of the drive scheme, which is how to build a good bridge between the circular LCD screen and the motherboard.

Terminal Application

Round LCD displays are divided into large size and small size. Small round LCD screen is more widely used, such as smart wear, smart watch, smart wall clock, electric vehicle instrument, car display instrument, smart home appliances, smart handheld devices, etc. Large size circular screens are also used, generally more than 20 inches in size, such as new medical equipment, industrial equipment central control, museum exhibition halls, enterprise conference rooms, financial media centers, commercial venues, etc. See the following example diagram.

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Round Displays Feature

The display size is relatively small. The commonly used ones are 1.28inch/ 1.3inch, 1.45inch, 1.6inch, 2.1inch, 2.5inch, 2.8inch, 3.4inch, 4.0inch, etc. All features as below:

Size1.08inch
Resolution240*210
Dimension31.28*30.3*1.45mm
Active Area27.58*24.13mm
Driver ICGC9307
Interface4-SPI
TouchscreenNONE
Brightness400cd/m2
MOQ2pcs
1.09inch round tft lcd screen 240*240 gc9a01 spi 4line interface tft lcd panel
Size1.09inch
Resolution240*240
Dimension30.59*32.83*1.6mm
Active Area27.79*27.79mm
Driver ICGC9A01
Interface4-SPI
TouchscreenNONE
Brightness380cd/m2
MOQ2pcs
Size1.28inch/1.3inch
Resolution240*240
Dimension35.6*37.74*1.6mm
Active Area32.4*32.4mm
Driver ICGC9A01
Interface4-SPI
TouchscreenNONE
Brightness420cd/m2
MOQ2pcs
Size1.28inch/1.3inch
Resolution240*240
Dimension47.3*47.3*3.05mm
Active Area32.4*32.4mm
Driver ICGC9A01/ CHSC6413
Interface4-SPI/ I2C
TouchscreenCapacitive Touch
Brightness380cd/m2
MOQ2pcs
round touch 1.3
Size1.28inch/1.3inch
Resolution240*240
Dimension41*41*3.85mm
Active Area32.4*32.4mm
Driver ICGC9A01/ CHSC6413
Interface4-SPI/ I2C
TouchscreenCustom Cover Glass
Brightness350cd/m2
MOQ2pcs
Size1.32inch
Resolution360*360
Dimension35.98*38.54*1.6mm
Active Area33.48*33.48mm
Driver ICGC9C01
InterfaceQSPI
TouchscreenNONE
Brightness450cd/m2
MOQ2pcs
1.45inch full ips round tft lcd module 412*412 resolution circular display qspi 24pin
Size1.45inch
Resolution412*412
Dimension39.36 *41.53*1.63mm
Active Area36.96*36.96mm
Driver ICWEA2010
InterfaceQSPI
TouchscreenNONE
Brightness400cd/m2
MOQ2pcs
主图3
Size1.6inch
Resolution400*400
Dimension42.94*45.89*1.6mm
Active Area39.84*39.84mm
Driver ICST7797
InterfaceMIPI
TouchscreenNONE
Brightness300cd/m2
MOQ2pcs
Size1.6inch
Resolution400*400
Dimension46.74*48.32*2.8mm
Active Area39.84*39.84mm
Driver ICST7797/ FT3267
InterfaceMIPI/ I2C
TouchscreenCapacitive Touch
Brightness260cd/m2
MOQ2pcs
1.6 inch small round 400*400 lcd mipi circular lcd display lcd screen (复制)
Size1.6inch
Resolution400*400
Dimension42.92*45.87*2.2mm
Active Area39.84*39.84mm
Driver ICST77903
InterfaceQSPI
TouchscreenNONE
Brightness230cd/m2
MOQ2pcs
Size2.1inch
Resolution480*480
Dimension58.18*59.71*2.3mm
Active Area52.88*52.88mm
Driver ICST7701S
InterfaceSPI+RGB
TouchscreenNONE/ HDMI
Brightness300cd/m2
MOQ2pcs
2.1 inch rgb+spi round lcd screen 480*480 ips tft lcd capacitive touch panel
Size2.1inch
Resolution480*480
Dimension61.27*59.26*4.33mm
Active Area53.28*53.28mm
Driver ICST7701S/ FT3267
InterfaceSPI+RGB/ I2C
TouchscreenCapacitive Touch/ HDMI
Brightness300cd/m2
MOQ2pcs
Size2.47inch
Resolution480*480
Dimension69.19*71.74*2.5mm
Active Area62.64*62.6mm
Driver ICHX8379C
InterfaceMIPI
TouchscreenNONE/ HDMI
Brightness400cd/m2
MOQ2pcs
主图5
Size2.8inch
Resolution480*480
Dimension73.0376.482.3mm
Active Area70.13*70.13mm
Driver ICST7701S
InterfaceSPI+RGB
TouchscreenNONE/ HDMI
Brightness300cd/m2
MOQ2pcs
Size3.0inch
Resolution480*480
Dimension58.01*61.38*2.5mm
Active Area53.28*53.28mm
Driver ICHX8369A
InterfaceSPI+RGB
TouchscreenNONE/ HDMI
Brightness450cd/m2
MOQ2pcs
3.4inch round display
Size3.4inch
Resolution800*800
Dimension96.6*99.0*2.05mm
Active Area87.6*87.6mm
Driver ICILI9881C
InterfaceMIPI
TouchscreenNONE/ HDMI
Brightness380cd/m2
MOQ2pcs
Size3.4inch
Resolution800*800
Dimension99.0*96.6*3.98mm
Active Area87.6*87.6mm
Driver ICILI9881C
InterfaceMIPI
TouchscreenCapacitive Touch/ HDMI
Brightness350cd/m2
MOQ2pcs
3.5inch round ips lcd display 800*640 spi rgb 40pin motorcycle speedometer lcd screen
Size3.5inch
Resolution800*640
Dimension97.6*83.79*4.0mm
Active Area90.0*72.0mm
InterfaceSPI+RGB
TouchscreenNONE
Driver ICST5892BAA
Brightness1200cd/m2
MOQ2pcs
Size3.6inch
Resolution544*506
Dimension95.46*91.81*2.3mm
Active Area89.76*83.49mm
InterfaceLVDS
Driver ICST72566
TouchscreenNONE
Brightness350cd/m2
MOQ2pcs
4inch full round mipi dsi tft lcd screen 720*720 ips circle car lcd display panel
Size4.0inch
Resolution720*720
Dimension109.9*105.6*1.0mm
Active Area101.5*101.5mm
InterfaceSPI+RGB
Driver ICNV3052C
TouchscreenNONE
Brightness300cd/m2
MOQ2pcs
4inch round circular tft lcd screen 720*720 hdmi board spi+rgb lcd display
Size4.0inch
Resolution720*720
Dimension109.9*105.6*1.0mm
Active Area101.5*101.5mm
InterfaceMIPI
Driver ICJD9365DA
TouchscreenNONE
Brightness300cd/m2
MOQ2pcs

Existing problems of the round screen

  1. Yield problem. Generally, the defect rate of round lcd displays is a little bit higher than rectangle and square lcd screens. With the progress of technology, the yield is basically the same as that of ordinary screens.
  2. Price. Normally, the price of round lcd displays are more than normal displays. But for small round lcd displays like 1.28inch, unit sample price is the same 1.3inch square displays.
  3. The circular LCD screen also has its own common faults, such as the display screen is not full around the arc, or the arc is white.
  4. Round displays also has its advantages. For example, it has a wide viewing angle, low power consumption, long lifetime, good apprearance…ect.

It is very important for customers to choose the right round screen. Everyone has different requirements for the round screen and their main points. I hope everyone can find a display suitable for their own projects.

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