ams Launches Industry's Smallest Integrated ALS and Proximity Sensor Solution to Maximize LCD Smartphone Screen-to-body Ratio
October 20 2020 - 11:30AM
Dow Jones News
ams (SIX: AMS), a leading worldwide supplier of high performance
sensor solutions, takes smartphone optical sensor miniaturization
to a new level with the introduction of the TMD2712, the world's
smallest integrated ambient light sensor (ALS) and proximity sensor
module in a miniature 1mm x 2mm footprint.
The TMD2712, which is just 0.5mm high, can now fit in the same
teardrop notch of an LCD touchscreen display as the selfie camera.
This supports the trend for phone designs with a minimal bezel or
even no bezel, an approach to industrial design that maximizes the
screen-to-body ratio and gives the user the greatest possible
viewable display area.
The new sensor is a complete system solution for accurate
ambient light sensing -- enabling display brightness management to
maintain comfortable viewing in all lighting conditions -- and for
reliable proximity detection, to turn the touchscreen display off
when the front of the phone is near an object such as the user's
face. It incorporates a low-power infrared vertical cavity surface
emitting laser (VCSEL) emitter and VCSEL driver, IR and visible
light photodiodes, and control logic.
ams' combination of specialized sensor technologies, deep
understanding of the ALS and proximity detection application, and
track record of producing quality products in high volume gives
smartphone manufacturers the confidence that ams will support their
most demanding handset development needs.
Jian Liu, Strategic Program Director in the Integrated Optical
Sensors business line at ams, says: "The TMD2712, the best-in-class
integrated ALS and proximity sensor for phones with an LCD screen,
further extends customer choices for smartphone optical sensors.
Across the full range of display technologies, ams offers
best-in-class products to enable bezel-less designs. From sensor
solutions like the TMD3719, the industry's first ambient light,
proximity and flicker sensor module, which operates completely
behind an OLED display, the TMD2755 -- world's smallest ambient
light and proximity sensor module optimized for large air gap
designs placed under the slit between LCD display and the frame,
and now the latest TMD2712 optimized for small air gap designs for
placement in the water drop notch with LCD displays.
Easy to integrate into smartphone display designs
The TMD2712 delivers easy integration into a display assembly
and accurate measurement of IR and ambient light. The module's
VCSEL emitter and photodiodes are offset from the package center
line to give the manufacturer greater flexibility in the placement
of the sensor alongside other components such as the camera. The
module's proximity detection engine, which offers improved
rejection of optical crosstalk, operates reliably over a long range
with a wide field-of-view, avoiding the need for dedicated
components such as a light pipe, interposer, or special ink.
The use of a VCSEL emitter and the implementation of power
optimizations in the module result in low power consumption to keep
the sensor's drain on the battery power supply to a minimum. The
TMD2712 sensor circuit operates from a 1.8V supply and draws just
0.7uA in sleep mode.
The TMD2712 ALS and proximity sensor is available for sampling
now. An evaluation board is available upon request from ams.
For sample or evaluation board requests or for more technical
information, go to https://ams.com/TMD2712.
View source version on businesswire.com:
https://www.businesswire.com/news/home/20201020005691/en/
CONTACT: Amy Flécher
ams AG
VP Marketing Communications
press@ams.com
ams.com
SOURCE: ams
Copyright Business Wire 2020
(END) Dow Jones Newswires
October 20, 2020 11:15 ET (15:15 GMT)