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This article takes you to understand the GF GFF GF2 G1F GG OGS technology of the touch screen

This article takes you to understand the GF GFF GF2 G1F GG OGS technology of the touch screen


Customers often ask, is your touch film G+G, or G+F, G+F+F...GF2? There are too many to distinguish them, so today Top One Tech will take you to understand them together!

touch screen pannel 

From the perspective of the structure of the screen, we usually divide the screen into three parts, from top to bottom are the protective glass, the touch screen, and the display screen. These three parts need to be laminated. Generally speaking, two laminations are required, one is between the cover glass and the touch screen, and the other is between the display and the TP. . According to the way of lamination, it can be divided into three types: full lamination, frame lamination, and zero lamination.



Fitting technology classification:



















1. GF technology


Namely Cover glass+Sensor film, this structure uses a single-layer FILM SENSOR, the ITO pattern is generally a triangle, supports finger touch, but does not support multi-touch.


Advantages: low cost, short time; good light transmission, and the total thickness of SENSOR is thin, the conventional thickness is 0.95mm.

GF technology 



2. GFF technology


This structure uses two layers of Film Sensor, the ITO pattern is generally diamond or rectangle, and supports multiple points.


Advantages: high precision, good handwriting effect, support for real multi-point; sensor can be shaped, low cost of mold opening, short time; total thickness is thin, the conventional thickness is 1.15mm, and the anti-interference ability is strong.

GFF technology 



3. GG structure


That is, cover glass+glass sensor, one layer of glass sensor, ITO is rhombus or rectangle.


Advantages: high precision, good light transmission, multi-touch support.


Disadvantages: high cost of mold opening, long proofing cycle, poor replaceability; glass sensor is easily damaged by impact, and glass sensor cannot be shaped; the thickness is thick, generally 1.37mm.

GG structure 


4. GF2/G1F1 technology

GF2/G1F1 technology 



5. OGS technology

OGS technology (One glass solution) is to distinguish it from multiple pieces. The original touch screen requires multiple pieces (G+G, G+F), while OGS is a technology that directly implements the touch sensor on the cover, it will be thinner, and the display will be better and clearer. It is mainly dominated and developed by touch screen manufacturers, while touch module manufacturers or upstream material manufacturers tend to OGS, that is, the touch layer is made on the cover glass, which has strong production process capabilities.

OGS technology 


Technology comparison


Screen permeability: OGS > (In-cell, on-cell) > GG > GF > GFF


Lightness and thinness: In-cell<OGS, on-cell<GF<GFF<GG


Touch effect: Strictly speaking, the touch sensitivity of OGS is better than that of on-cell/in cell, but the touch is also related to the underlying optimization of the system of the whole machine.


Cost and technical difficulty: In-cell/On-cell is more difficult and costly, followed by OGS, GF and GFF have low cost and technical difficulty.

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