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TSP - Touch Screen Panel
■ Melfas Mutual Capacitance TSP
After patternizing the electrically conductive FILM or the transparent electrically conductive film between and allocate a lot of independent electrodes, So when the capacitance couple is used either human bodies or the films which formed electrode matrix.
When the finger touches the electrode, the capacity of the human body is added to the circuit, and the pointing location of the pointing is detected by monitoring the changed capacity.
MELFAS’s capacitive Touch Screen is made by coating Capacitive Touch Screen which went through the heat treatment with transparent metal(ITO) of the special electrical conductivity.
The layer with the horizontal pattern and the vertical pattern is to be produced. (In case of the 2 layers) By overlapping the two layers together, we compose the matrix. We calculate the matrix touched the finger and recognize it. Using a specialized pattern of MELFAS(2 layer or 1 layer), we recognize the changed amount of the capacitor value and then extract the coordinate value(pattern figure: registered patent)
* Basic structure of TSP
■ Melfas Customizing Process
Features per eam TSP Type
GFF(Slim GFF) / PFF
Merits ㅣ Normal laminated structure that
the yielding is verified, unlimted size
Demerits l High unit cost, Limited thickness,
Ligur transmittance rate 88~90%
Merits ㅣ Thin thickness, low processing cost,
excellent penetration rate
Demerits l Limited size
Merits ㅣ Excellency in optical characteristics,
the thickness is thin, low processing cost
Demerits l Limited size, Complex pattern
Merits ㅣ Excellent optical characteristics compared
Demerits l Possible danger in decrease of yield rate.
Merits ㅣ Mass production is possible
Demerits l High investment cost and many restrictions
Whole internalization process of MELFAS TSP
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