The Demand of LCD is sharply increasing for projected capacitive (PROCAP) touchscreen display panels, used in smartphones and tablets and many other display devices but capacitive touch panel structures are unique. This core technology must be advanced and differentiated to enable more touch device.
In general, capacitive touch can be classified into glass- or film-substrate produced. Glass-substrate capacitive touchscreens are found in latest smartphones and high tech products. The iPhone uses a glass-glass (GG) structure that forms the X-axis sensing electrode on the upper surface of a glass substrate and Y-axis sensing electrode on the bottom.
While Apple's GG method and other mobile phone makers' glass/film (GFF) designs are becoming mainstream, attempts to develop products such as G1F, and G2 with better transmittance and thinness will continue. G2 is cover window integrated touch, which does not require separate touch sensor.
The advantages of GFF are low capital cost, suitable for small quantity batch production, and light structure. GG is suitable for mass production and has better appearance properties, but it has high investment costs and is heavier than film-based panels.
So, for the shake of low cost and lightweight we always prefer the brands to go with GFF if they don't have any high appearance properties in their products.
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