Advantages and disadvantages of touch screen

Advantages and disadvantages of touch screen
1、 Advantages

1. Various operations such as zooming in, moving, etc. can be achieved using software without physical buttons.
2. Multi touch (two or more points) can achieve various inputs such as zooming in and out.

3. The displayed operation object is consistent with the input object and has intuitive operability.

4. The integration of input and display can achieve miniaturization of the machine, with a relatively high degree of design freedom.

5. It will not have gaps like keyboards, switches, etc., and will not allow garbage, dust, water, etc. to enter. It is not easy to damage and is easy to maintain.

2、 Disadvantages

1. Not suitable for quick input with keyboards, mice, buttons, etc.

2. Directly touching the display can easily contaminate the image and make it difficult to read information; Easy to cause misoperation due to scratches and other factors.

3. There is no click sensation like buttons or mice, so input actions become clumsy (there are also touch screens that provide click sensation).

4. Blind people have difficulty using it, so it is necessary to use it in conjunction with sound indicators and buttons, or specify the touch location.

Advantages and disadvantages of infrared touch screens
1、 Advantages

1. The use effect on flat panel displays is very good

Infrared technology touch screens use infrared emitting and receiving tubes of the same wavelength distributed in the same plane to obtain monitoring results, so the advantages of using them on flat displays such as liquid crystal displays are astonishing.

2. Good usage characteristics

The touch force is very light and there are no special requirements for the touch body. Human fingers or any object that blocks infrared light can be used as a touch body.

3. Highly adaptable

It is not affected by current, voltage, and static electricity interference, and can effectively prevent explosion and dust. It has strong adaptability in harsh environmental conditions.

4. High stability

It will not drift or change due to changes in time, location, or environment.

5. Long service life

It is durable, scratch resistant, and has a long normal working time for touch control.

2、 Disadvantages

1. Poor performance on spherical display screens

Because infrared touch screens require the working infrared grating matrix to be on the same plane, in the use of spherical displays, when the working plane that truly senses touch is far away from the curved display screen, especially at the corners, the accuracy and sensitivity of infrared touch screens will be lower.

2. Vulnerable to strong infrared interference

Such as remote control, high-temperature objects, incandescent lamps, sunlight, etc.

3. Easy to be interfered by strong electromagnetic objects, such as transformers.

Advantages and disadvantages of capacitive touch screens
1、 Advantages

1. Novel operation

The capacitive touch screen supports multi touch, making the operation more intuitive and interesting.

2. Not easily touched by mistake

Due to the fact that capacitive touch screens need to sense the current of the human body, only the human body can operate them, and there will be no corresponding response when touched by other objects, thus basically avoiding the possibility of accidental touch.

3. High durability

Compared to resistive touch screens, capacitive touch screens have better performance in terms of dust, water, and wear resistance.

2、 Disadvantages

1. Low accuracy

Due to technical reasons, the accuracy of capacitive touch screens is still lacking compared to resistive touch screens. And it can only be inputted with fingers, making it difficult to recognize complex handwriting input on a small screen.

2. Vulnerable to environmental influences

When environmental factors such as temperature and humidity change, it can also cause instability and even drift of capacitive touch screens. For example, if a user brings their body close to the screen while using it, it may cause drift, and even operating in a crowded crowd can cause drift. This is mainly due to the working principle of capacitive touch screen technology. Although the user’s fingers are closer to the screen, there are still many electric fields near the screen that are much larger in volume than the fingers, which can affect the judgment of touch position.

3. High cost

In addition, there are still certain technical difficulties in the process of attaching the touch panel to the LCD panel for current capacitive touch screens, and the yield rate is not high, which invisibly increases the cost of capacitive touch screens.