TP (touch) technology basic video course

1、 About this video tutorial and learning groups.

In fact, I have been thinking for a long time about whether to record this video tutorial, but with the strong support of all netizens, I have decided to record this video tutorial. Got it ninety-one Touch screen network（ http://www.91ctp.com ）Strong support from. Now that I have decided to record the video tutorial here, I will explain it in detail, according to the standards of touch screen design engineers. First, let's have a look at the general learning content of our course.

Course content of the first quarter: (95 episodes recorded)

I CAD Basic knowledge (I will talk about the basic operation of this software)

2、 Introduction to basic knowledge of touch screen

3、 Introduction to auxiliary materials of touch screen (introduce the materials used for making touch screen)

4、 Introduction to touch screen technology (silk screen and laser technology)

V FPC Design of (two at the same time COB A sum of patterns COF Mode)

6、 Design of touch screen structure

7、 Touch screen SENSOR Design of IC For example)

8、 Introduction to touch screen engineering drawings and film screen version (talk about standard design and how to draw a real engineering drawing suitable for production)

9、 Introduction to the quality of the touch screen (how to deal with some abnormalities encountered in the production of the touch screen)

10、 Touch screen test (touch screen test will be described COB and COF Test)

11、 Introduction to touch screen equipment.

Course content of the second quarter (60 episodes are expected during recording)

Course content of the third quarter (50 episodes expected in the plan)  

We will talk about it in detail according to this chapter. stay CAD I will explain the knowledge in detail CAD Is it because of designing? You must know a drawing software to draw. speak CAD Basic knowledge of installation, labeling, layers, basic operations, etc.

Let's talk about the learning group of this course. You don't need to graduate from a college or university to learn this course. I can study even after graduating from junior high school. As long as you really look, learn, and operate. Can learn. But you are required to be interested in the touch screen industry, because interest is a better teacher? No matter how well I speak, I'm not as interested as you. Also, the touch screen design is relatively simple. Don't think it's difficult. I just graduated from junior high school and engaged in design. In fact, I tell you that it's not complicated at all. It's simple. Even if you seriously study what you can learn after graduating from junior high school. Of course, if you are an employee of the production line of the touch screen factory, it will be easier for you to learn the touch screen design. Because you have worked in the touch screen factory with experience! Know craft! This is your advantage. It must be much easier than those who just start learning.

2、 Introduction to touch screen

   1. Basic concepts

  The so-called touch screen, in terms of market concept, is a computer input device that everyone can use, or a device that everyone can use to communicate with computers. No need to learn, everyone can use it, which is the biggest magic of the touch screen. Neither the keyboard nor the mouse can compare with it. Everyone can use it, which marks the real arrival of the era of computer application popularization. This is also the development of touch screen, development KIOSK , Development KIOSK Network, the reason for the formation of China's touch industry.

From the perspective of technical principle, the touch screen is a set of transparent positioning system. First, it must be transparent. Therefore, it must solve the transparency problem through material technology. For example, digitizer, tablet, elevator switch, they are not touch screens; Secondly, it is very coordinate, where the finger touches, it does not need a second action, unlike the mouse, it is a set of relative positioning systems. We can notice that touch screen software does not need the cursor, but the cursor affects the user's attention instead, because the cursor is used for the relative positioning device, and if the relative positioning device wants to move to a place, it must first know where it is now, In which direction to go, you need to constantly feedback the current position to the user every moment to avoid deviation. These are not required for the touch screen with very coordinate positioning; Secondly, it can detect the touch action of fingers and judge the position of fingers. All kinds of touch screen technologies are centered on "detecting finger touch" and the eight immortals cross the sea to show their respective magic.

two Main features

The first feature of the touch screen:

Transparent, which directly affects the visual effect of the touch screen. Transparency has a problem with the degree of transparency. The infrared technology touch screen and the surface acoustic wave touch screen are separated by only one layer of pure glass. Transparency can be regarded as an outstanding one. Other touch screens need to be carefully studied. "Transparency" is a very general concept in the touch screen industry. Many touch screens are multilayer composite films, It is not enough to generalize its visual effect just by using transparency. It should include at least four characteristics: transparency, color distortion, reflectivity and clarity. It can also be subdivided. For example, the degree of reflection includes mirror reflection and diffraction reflection, but the diffraction reflection on the surface of the touch screen has not yet reached CD  For users, these four measures are basically enough. Due to the existence of light transmittance and wavelength curve graph, the image seen through the touch screen inevitably produces color distortion with the original image. The static image feeling is just color distortion, while the dynamic multimedia image feeling is not very comfortable. The color distortion, that is, the maximum color distortion in the graph, is naturally the smaller the better. Generally speaking, transparency can only be the average transparency in the figure, of course, the higher the better. Reflectivity mainly refers to the light and shadow overlapping behind the image caused by mirror reflection, such as human shadow, window, light, etc. Reflectivity is a negative effect brought by the touch screen. The smaller the better, it affects the user's browsing speed. In serious cases, it is even impossible to recognize image characters. The use environment of the touch screen with strong reflectivity is limited, and the on-site light layout has to be adjusted. Most touch screens with reflective problems provide another model with surface treatment: frosted surface touch screen, also called anti glare type. The price is slightly higher, and the anti glare type reflective property is significantly reduced, which is suitable for halls or exhibition venues with very sufficient lighting. However, the light transmittance and clarity of the anti glare type also decrease significantly. Clarity. After some touch screens are installed, the handwriting and image details are blurred, and the whole screen appears blurred and cannot be seen clearly. This is because the definition is too poor. The problem of sharpness is mainly caused by the repeated reflection and refraction of light between the film layers of the touch screen with multilayer film structure. In addition, the sharpness of the anti glare touch screen is also reduced due to the sanding of the surface. The definition is poor, and the eyes are easy to fatigue, which may also cause some damage to the eyes. When purchasing the touch screen, you should pay attention to discrimination.

The second feature of the touch screen:

The touch screen is a coordinate system. Click where you want to choose. The essential difference between the touch screen and the relative positioning system such as the mouse is that it is intuitive. The feature of the coordinate system is that each positioning coordinate has nothing to do with the last positioning coordinate. The touch screen is physically a set of independent coordinate positioning system. The data of each touch is converted into the coordinates on the screen through the calibration data. In this way, the set of coordinates of the touch screen is required to be stable in the output data of the same point under any circumstances, Then the touch screen can not guarantee very coordinate positioning and inaccurate point, which is the most feared problem of the touch screen: drift. In technical principle, any touch screen that cannot ensure that the same touch point has the same sampling data every time will inevitably drift. At present, only the capacitive touch screen has drift.

The third feature of the touch screen:

To detect touch and locate, various touch screen technologies rely on their own sensors to work, and even some touch screens themselves are a set of sensors. Their positioning principles and sensors determine the response speed, reliability, stability and life of the touch screen.

three Development and application

People talk more and more about touch screens, because touch screens are not only suitable for China The national conditions of multimedia information query, and the touch screen has many advantages such as durability, fast response, space saving, easy communication, etc. With this technology, users can operate the host computer by gently touching the symbols or words on the computer screen with their fingers, which makes human-computer interaction more straightforward. This technology greatly facilitates those users who do not understand computer operation.

  Touch screen is widely used in China, mainly for public information query; Such as business inquiry of telecommunication bureau, tax bureau, bank, electric power and other departments; Information query on urban streets; In addition, it is applied to leadership office, industrial control, military command, electronic games, song and dish ordering, multimedia teaching, and real estate Production and pre-sale, etc. In the future, touch screens will also enter the home.

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