From the screen structure, we can roughly divide the screen into three parts, from top to bottom, respectively, protective glass.touch screen、to showscreen. These three parts must be adjusted and can be divided according to the adjustment methodIt is complete and frame sticker.
The frame stickers are also called oral glue connections, which means that the double -sided tape is used to fix the four sides of the touch screen and the display screen;
There is a layer of air between the screen and the touch screen.
Complete technology means using water glue or optical glue to completely stick the display screen and touch screen without any gap.
Fully adjusted image sticker
advantage:
the better display effect. Complete technology eliminates air between the screen, which can considerably reduce the reflection of light, reduce the loss of light, thus increasing the brightness and improving the display effect of the screen.
L The screen isolates dust and water vapor. The air layer of the ordinary connection method is easily contaminated by environmental dust and water vapor, which affects the use of the machine; While the complete connection glue fills the gap, the display panel is closely equipped with the touch screen and the dust and water vapor is nowhere to enter, maintaining the cleanliness of the screen.
The Reduce noise interference. The narrow combination of the touch screen and the display panel can not only increase resistance, but also effectively reduce interference caused by noise to touch signals and improve the softness of tactile operation. Make it the body thinner. The full screen has a thinner body. The touch screen and the screen are linked to optical glue, which increases only the thickness of 25 μm-50 μm; It is 0.1 mm-0.7 mm thinner than the ordinary adaptation method.
l simplify the assembly. The assembly of the complete module and the entire machine can be directly fixed by slamming or locking the screws, reducing the assembly problems caused by adjustment deviations and simplifying assembly processes and reducing assembly costs.
L at the same time, it helps a narrow border design, so the border can be narrower.
Complete process classification
OCA Fit
OCA (clearly clear adhesive) is a special adhesive used to link transparent transparent optical components (such as lenses, etc.). It is necessary to have an colorless and transparent light transmittance of more than 90%, good resistance to cement, can be hardened at room temperature or at medium temperature, and has the characteristics of hardening and narrowing.
It is mainly suitable for adjusting small products, and each product must be molded, which is expensive and has a high adaptation cost; There is no special requirement for the material of the adaptation product, and the thickness is generally 100um, 125um, 150um and 175um.
Common brands currently:
Japan: Niktoki, Hitachi, Mitsubishi, Hiei, Prince, DIC, Yama Sakura, etc.
South Korea: LG, Tapex, St, Youl Chon
Taiwan: Changxing, qimei, benq, etc.
Domestic: Liwang, Huazhuo, etc.
United States: 3m
advantage:
High production efficiency, uniform thickness, no glue overflow problem, controllable bonding area, no corrosion problem.
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Comparison articles |
Loca glue |
OCA ribbon |
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Stock management |
A model can correspond to several products |
Each product requires a corresponding size |
|
gap fill |
Fundamentally unlimited liaison objects |
Only fill the gaps with a glue thickness ≥ 1/10 |
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Treat complexity |
Simple process |
More complex |
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Finished product rate |
＞ 90 ％ |
＜ 75 ％ |
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Scope of the application |
Fundamentally the size of the unlimited product |
Suitable for small product fittings |
Loca Fit is also called OCR in industry
Clear Optical Liquid Optical Adhesive, the English name is a clear optical optic adhesive, is a special adhesive mainly used for the connection of transparent optical components.
Colorless and transparent, with a light transmittance of more than 98%, good resistance to binding and can be healed at room temperature or at medium temperature. It also has the characteristics of a small shrinkage of hardening and resistance to yellowing.
It is mainly suitable for large bonds, a bond of curved or more complex surface structure, a higher ink thickness or an unequal surface link.
Advantages: It can be binded by curved surfaces or uneven surface materials, is not sensitive to the thickness of the ink, is easy to rework and is lower than the OCA.
