Figure 3 | Scientific Reports

Figure 3

From: Biometric authentication security enhancement under quantum dot light-emitting diode display via fingerprint imaging and temperature sensing

Figure 3

Schematic of stack structure for penetrated micro-sized holes patterns. (a) Combined layers with several penetrated micro-sized holes. (b) Cross-sectional view of the smartphone stack structure. (c) Schematic of touch metal sensor panel. (d) Optical microscope image of touch sensor metal lines aligned along the perimeter of sub-pixels (yellow arrow), scale bar: 20 µm. (e) Display layer with red, green, and blue sub-pixels. (f) Driving metal lines layer. (g) Optical microscope image of combined layers with pixel display layer and driving metal lines layer, scale bar: 20 µm.

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