STK33562
Ambient Light Sensor and Proximity Sensor
STK 33562 is an excellent ALS/PS sensor with ultra-high sensitivity, human eyes coating for ALS response (refer to CIE 1931 color matching functions) , over 100 degrees in ALS viewing angle, flexible PS photodiodes selection for applications, and well performance in signal to noise. With the popularity of full screen in mobile phones and portable devices, STK (Sensortek) provides solutions, Tiny-slit and Under-display, to reach out-standing and stable performance in applications. This document would detail recommended mechanical design for full screen devices.
Tiny-slit for Full Screen Mobile Phone
Mechanical Overview
A full screen mobile device does not allow a wide margin surrounding the screen for the high screen ratio. As the result, there is no space for the traditional ALS/PS sensor with one or two thoroughfare (Ink) on the cover glass. STK provides Tiny-slit tunnel solution, placing ALS/PS sensor at the tiny margin of the screen. This tiny slit tunnel comes from the frame of the device and the edge of display to become a 0.5-1.0mm width tunnel. ALS/PS sensor is placed under the display and emitting/receiving light through this tiny slit tunnel as Figure 1 shown.
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