DISPLAY WITH PERIPHERALLY CONFIGURED ULTRASONIC BIOMETRIC SENSOR
First Claim
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1. A thin-film transistor (TFT) backplane comprising:
- a substrate with a first side and an opposing second side;
an array of display pixel circuits located on the first side, each display pixel circuit configured to cause a display pixel of a display device connectable to the TFT backplane to change light-emitting, light-transmitting, or light-reflecting states; and
an array of sensor pixel circuits located on the first side, each sensor pixel circuit configured to form part of a sensor circuit configured to read a charge provided to the sensor circuit from an array location, wherein;
the array of display pixel circuits and the array of sensor pixel circuits occupy non-overlapping areas of the TFT backplane.
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Abstract
Various techniques and apparatuses are disclosed that provide for pixelated display modules that integrate an ultrasonic fingerprint or biometric sensing capability. In some implementations, the ultrasonic fingerprint sensor and the display components of the display module may share a common backplane. In some implementations, the ultrasonic fingerprint sensor may share a flex cable with other components in the display module. In some implementations, the ultrasonic fingerprint sensor may leverage conductive traces on a cover glass used to provide for touch input to the display module.
106 Citations
26 Claims
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1. A thin-film transistor (TFT) backplane comprising:
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a substrate with a first side and an opposing second side; an array of display pixel circuits located on the first side, each display pixel circuit configured to cause a display pixel of a display device connectable to the TFT backplane to change light-emitting, light-transmitting, or light-reflecting states; and an array of sensor pixel circuits located on the first side, each sensor pixel circuit configured to form part of a sensor circuit configured to read a charge provided to the sensor circuit from an array location, wherein; the array of display pixel circuits and the array of sensor pixel circuits occupy non-overlapping areas of the TFT backplane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display module comprising:
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a cover glass sized larger than an active display area of the display module; a thin-film transistor (TFT) backplane with a first side and an opposing second side, wherein the TFT backplane has; an array of display pixel circuits located on the first side, and an array of sensor pixel circuits located on the first side, each sensor pixel circuit configured to form part of a piezoelectric sensor circuit for a piezoelectric sensor, wherein the array of display pixel circuits and the array of sensor pixel circuits occupy non-overlapping areas of the TFT backplane; one or more display components positioned between the cover glass and the TFT backplane, the one or more display components configured to, in conjunction with the array of display pixel circuits, provide display functionality for the display module; and an ultrasonic sensor system, wherein; at least part of the ultrasonic sensor system is located between the TFT backplane and the cover glass, and the array of sensor pixel circuits forms part of the ultrasonic sensor system. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A thin-film transistor (TFT) backplane comprising:
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a substrate with a first side and an opposing second side; an array of display pixel circuits located on the first side, each display pixel circuit configured to cause a display pixel of a display device associated with the TFT backplane to change light-emitting, light-transmitting, or light-reflecting states; and a sensor pixel circuit located on the first side, the sensor pixel circuit configured to form part of a sensor circuit configured to read a charge provided to the sensor circuit, wherein; the array of display pixel circuits and the sensor pixel circuit occupy non-overlapping areas of the TFT backplane. - View Dependent Claims (23, 24, 25, 26)
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Specification