Sensor circuits for narrow bezels around electronic displays
Systems and methods are described for configuring sensor circuits in electronic devices. An example sensor circuit may comprise a sensor comprising at least one of an electromagnetic resonance layer, a touch panel layer, a receiver, or a transmitter. The example may comprise a transmitter wire coupled to the sensor. The transmitter wire may be formed to include, at least in part, a first bent portion. The example may comprise a receiver wire coupled to the sensor. The receiver wire may be formed to include, at least in part, a second bent portion. The first bent portion and the second bent portion may be disposed, at least in part, in a bending area adjacent an edge of the sensor. The example may comprise a sensor tail formed to include, at least in part, the transmitter wire and the receiver wire. The sensor tail may be coupled to a control circuit.
1 . An electronic device comprising:
at least one processor;
at least one non-transitory computer-readable memory;
a display stack;
a housing comprising a bezel disposed adjacent a top edge, a left edge, a right edge, and a bottom edge of the display stack; and
a sensor circuit comprising:
a sensor disposed within the display stack;
a touch control circuit comprising a flexible printed circuit disposed between the display stack and the housing;
at least one Tx wire comprising:
a first Tx end coupled to the sensor;
a first Tx portion extending from the first Tx end, wherein the first Tx portion is adjacent at least one of the right edge or the left edge;
a second Tx portion extending from the first Tx portion, wherein the second Tx portion is formed to include, at least in part, a first bent portion adjacent the bottom edge; and
a second Tx end extending from the second Tx portion;
at least one Rx wire comprising:
a first Rx end coupled to the sensor;
a first Rx portion extending from the first Rx end, wherein the first Rx portion is adjacent, at least in part, the bottom edge;
a second Rx portion extending from the first Rx portion, wherein the second Rx portion is formed to include, at least in part, a second bent portion adjacent the bottom edge; and
a second Rx end extending from the second Rx portion; and
a sensor tail formed to include, at least in part, the second Tx end and the second Rx end, wherein the sensor tail couples the at least one Tx wire and the at least one Rx wire to the flexible printed circuit of the touch control circuit.
2 . The electronic device of claim 1 , wherein the sensor circuit comprises:
at least one bonding pad configured to couple the at least one Rx wire to the sensor, wherein the at least one bonding pad is disposed adjacent the bottom edge between the sensor and the first Rx end,
wherein the first bent portion of the at least one Tx wire and the second bent portion of the at least one Rx wire are disposed in a bending area adjacent the bottom edge of the display stack.
3 . The electronic device of claim 1 , wherein the at least one Tx wire comprises a first Tx wire and a second Tx wire, wherein the at least one Rx wire comprises a first Rx wire and a second Rx wire,
wherein the sensor circuit comprises:
a first sensor trace group comprising the first Tx wire and the first Rx wire;
a second sensor trace group comprising the second Tx wire and the second Rx wire; and
a mesh ground disposed between the first sensor trace group and the second sensor trace group.
4 . A sensor circuit comprising:
a sensor;
a transmitter wire coupled to the sensor, wherein the transmitter wire is formed to include, at least in part, a first bent portion;
a receiver wire coupled to the sensor, wherein the receiver wire is formed to include, at least in part, a second bent portion, wherein the first bent portion and the second bent portion are formed to include, at least in part, a bending area adjacent an edge of the sensor; and
a sensor tail formed to include, at least in part, the transmitter wire and the receiver wire.
5 . The sensor circuit of claim 4 , wherein the first bent portion comprises at least one of a 180-degree summation bend, a hairpin bend, or a loopback formed by the transmitter wire, wherein the second bent portion comprises at least one of a 180-degree summation bend, a hairpin bend, or a loopback formed by the receiver wire, wherein the first bent portion is parallel to the second bent portion, at least in part, in the bending area.
6 . The sensor circuit of claim 4 , comprising:
a control circuit comprising a printed circuit,
wherein the sensor comprises at least one of an electromagnetic resonance panel or a touch panel, wherein the sensor tail is configured to communicatively couple the sensor to the control circuit.
7 . The sensor circuit of claim 4 , comprising:
a bonding pad configured to couple the sensor to the receiver wire, wherein the sensor tail is aligned on center with the sensor.
8 . The sensor circuit of claim 4 , wherein the transmitter wire comprises a ribbon cable comprising a first transmitter wire and a second transmitter wire, wherein the first transmitter wire and the second transmitter wire converge, at least in part, in the bending area.
9 . The sensor circuit of claim 4 , wherein the receiver wire comprises a ribbon cable comprising a first receiver wire and a second receiver wire, wherein the first receiver wire and the second receiver wire converge, at least in part, in the bending area.
10 . The sensor circuit of claim 4 , wherein the transmitter wire comprises a first transmitter wire and a second transmitter wire, wherein the receiver wire comprises a first receiver wire and a second receiver wire, wherein the sensor circuit comprises:
a first sensor trace group comprising the first transmitter wire and the first receiver wire; and
a second sensor trace group comprising the second transmitter wire and the second receiver wire.
11 . The sensor circuit of claim 10 , comprising:
a shielding element disposed between the first sensor trace group and the second sensor trace group, wherein the shielding element comprises at least one of an electrical ground, a tape, or a wire mesh.
12 . The sensor circuit of claim 11 , wherein the receiver wire comprises a third receiver wire and a fourth receiver wire, wherein the sensor circuit comprises:
a third sensor trace group comprising, at least in part, the third receiver wire and the fourth receiver wire.
13 . The sensor circuit of claim 12 , comprising:
a second shielding element disposed between the third sensor trace group and at least one of the first sensor trace group or the second sensor trace group.
14 . An electronic device comprising:
at least one processor;
at least one non-transitory computer-readable memory;
a housing comprising a bezel; and
a sensor circuit comprising:
a sensor;
a transmitter wire coupled to the sensor, wherein the transmitter wire is formed to include, at least in part, a first bent portion;
a receiver wire coupled to the sensor, wherein the receiver wire is formed to include, at least in part, a second bent portion, wherein the first bent portion and the second bent portion are formed to include, at least in part, a bending area adjacent an edge of the sensor; and
a sensor tail formed to include, at least in part, the transmitter wire and the receiver wire.
15 . The electronic device of claim 14 , wherein the first bent portion comprises at least one of a 180-degree summation bend, a hairpin bend, or a loopback formed by the transmitter wire, wherein the second bent portion comprises at least one of a 180-degree summation bend, a hairpin bend, or a loopback formed by the receiver wire, wherein the first bent portion is parallel to the second bent portion, at least in part, in the bending area.
16 . The electronic device of claim 14 , comprising:
a control circuit comprising a printed circuit,
wherein the sensor comprises at least one of an electromagnetic resonance panel or a touch panel, wherein the sensor tail is configured to communicatively couple the sensor to the control circuit.
17 . The electronic device of claim 14 , comprising:
a bonding pad configured to couple the sensor to the receiver wire, wherein the sensor tail is aligned on center with the sensor.
18 . The electronic device of claim 14 , wherein the transmitter wire comprises a ribbon cable comprising a first transmitter wire and a second transmitter wire, wherein the first transmitter wire and the second transmitter wire converge, at least in part, in the bending area.
19 . The electronic device of claim 14 , wherein the receiver wire comprises a ribbon cable comprising a first receiver wire and a second receiver wire, wherein the first receiver wire and the second receiver wire converge, at least in part, in the bending area.
20 . The electronic device of claim 14 , wherein the transmitter wire comprises a first transmitter wire and a second transmitter wire, wherein the receiver wire comprises a first receiver wire and a second receiver wire, wherein the sensor circuit comprises:
a first sensor trace group comprising the first transmitter wire and the first receiver wire; and
a second sensor trace group comprising the second transmitter wire and the second receiver wire.