Abstract: An antenna device includes a first substrate and first and second antenna units disposed above the first substrate. The first antenna unit includes a first transistor, a first lower antenna electrode and a first upper antenna electrode. The second antenna unit includes a second transistor, a second lower antenna electrode, and a second upper antenna electrode. A gate electrode, a source electrode and a drain electrode of the first transistor are respectively symmetrical to a gate electrode, a source electrode and a drain electrode of the second transistor.

Abstract: An antenna device includes an antenna array substrate. The antenna array substrate includes a first substrate, a second substrate, a liquid crystal layer and a plurality of antenna units. The liquid crystal layer is located between the first substrate and the second substrate. Each antenna unit includes at least four first antenna electrodes and a second antenna electrode. The first antenna electrodes are separated from each other and located above a first side of the first substrate near the liquid crystal layer. The second antenna electrode is located above a first side of the second substrate near the liquid crystal layer. The second antenna electrode is partially overlapping with the at least four first antenna electrodes in a normal direction of the top surface of the second substrate.

Abstract: An antenna device includes first to third antenna units and a feed-in line. An angle between the second antenna unit and the first antenna unit is substantially equal to 90 degrees. An angle between the third antenna unit and the first antenna unit is substantially equal to 90 degrees. The feed-in line crosses over each of the first to third antenna units in a view, and is configured to turn on and turn off each of the first to third antenna units. The first antenna unit and the second antenna unit are configured to generate a first polarized signal, the third antenna unit and the second antenna unit are configured to generate a second polarized signal, and the first polarized signal and the second polarized signal have different polarizations.

Abstract: An antenna device includes first to third antenna units and a feed-in line. An angle between the second antenna unit and the first antenna unit is substantially equal to 90 degrees. An angle between the third antenna unit and the first antenna unit is substantially equal to 90 degrees. The feed-in line crosses over each of the first to third antenna units in a view, and is configured to turn on and turn off each of the first to third antenna units. The first antenna unit and the second antenna unit are configured to generate a first polarized signal, the third antenna unit and the second antenna unit are configured to generate a second polarized signal, and the first polarized signal and the second polarized signal have different polarizations.

Abstract: An antenna device includes a first antenna unit, a second antenna unit and a third antenna unit. An angle between the second antenna unit and the first antenna unit is substantially equal to 90 degrees. An angle between the third antenna unit and the first antenna unit is substantially equal to 90 degrees. The first antenna unit and the second antenna unit are configured to generate a signal having a first polarization when the third antenna unit is turned off. The third antenna unit and the second antenna unit are configured to generate a signal having a second polarization different from the first polarization when the third antenna unit is turned off. A method of generating polarized signals is also disclosed herein.

Abstract: An optical sensing circuit including a capacitor, a light sensing unit, a compensation unit, and a switching element is provided. The light sensing unit, the compensation unit, and the switching element are electrically connected to the capacitor. The light sensing unit senses the light of a first color. The compensation unit senses the light of a second color complementary to the first color. When a light illuminates the light sensing unit and the compensation unit, a first light component of the light corresponding to the first color causes the light sensing unit to generate a first current, and a second light component of the light corresponding to the second color causes the compensation unit to generate a second current, which reduces the amount of the charging or the discharging current when the first current charges or discharges the capacitor whose voltage is read as information for determining light color.

Abstract: An antenna device includes a first antenna unit, a second antenna unit and a third antenna unit. An angle between the second antenna unit and the first antenna unit is substantially equal to 90 degrees. An angle between the third antenna unit and the first antenna unit is substantially equal to 90 degrees. The first antenna unit and the second antenna unit are configured to generate a signal having a first polarization when the third antenna unit is turned off. The third antenna unit and the second antenna unit are configured to generate a signal having a second polarization different from the first polarization when the third antenna unit is turned off. A method of generating polarized signals is also disclosed herein.

Abstract: An electronic device including a first substrate, a second substrate, a light-emitting element, and a piezoelectric element is provided. The light-emitting element is disposed between the first substrate and the second substrate. The piezoelectric element is disposed between the first substrate and the second substrate. The piezoelectric element includes a piezoelectric layer having an opening, and the light-emitting element is disposed in the opening.

Abstract: An optical sensing circuit includes a first, a second, and a third optical sensing element and a sampling circuit. The first sensing element provides a first current from a first node to a second node according to an ambient light and a sensing signal. The second optical sensing element drains a second current from the second node to the first node according to the ambient light and the sensing signal. The third optical sensing element is coupled between the first node and the second node. The third optical sensing element receives a first color light, and transmits the first current to the second node or transmits the second current to the first node according to the first color light. The sampling circuit is turned on according to the sampling signal to output a detection signal based on the voltage level of the second node.

Abstract: A pixel circuit and a driving method thereof are provided. The pixel circuit includes first to second pixel electrodes, first to third liquid crystal capacitors, a first storage capacitor and first to third switches. The first liquid crystal capacitor and the first storage capacitor locate between the first pixel electrode and a first common voltage. The second liquid crystal capacitor locates between the first and the second pixel electrodes. The third liquid crystal capacitor locates between the second pixel electrode and the first common voltage. The first switch has ends for receiving a data voltage and a scan signal and coupled to the first pixel electrode. The second switch has ends for receiving a second common voltage and a reset signal and coupled to the first pixel electrode. The third switch has ends for receiving a reset voltage and the reset signal and coupled to the second pixel electrode.

Abstract: An optical sensing circuit including a capacitor, a light sensing unit, a compensation unit, and a switching element is provided. The light sensing unit, the compensation unit, and the switching element are electrically connected to the capacitor. The light sensing unit senses the light of a first color. The compensation unit senses the light of a second color complementary to the first color. When a light illuminates the light sensing unit and the compensation unit, a first light component of the light corresponding to the first color causes the light sensing unit to generate a first current, and a second light component of the light corresponding to the second color causes the compensation unit to generate a second current, which reduces the amount of the charging or the discharging current when the first current charges or discharges the capacitor whose voltage is read as information for determining light color.

Abstract: An optical sensing circuit includes a first, a second, and a third optical sensing element and a sampling circuit. The first sensing element provides a first current from a first node to a second node according to an ambient light and a sensing signal. The second optical sensing element drains a second current from the second node to the first node according to the ambient light and the sensing signal. The third optical sensing element is coupled between the first node and the second node. The third optical sensing element receives a first color light, and transmits the first current to the second node or transmits the second current to the first node according to the first color light. The sampling circuit is turned on according to the sampling signal to output a detection signal based on the voltage level of the second node.

Abstract: A pixel circuit and a driving method thereof are provided. The pixel circuit includes first to second pixel electrodes, first to third liquid crystal capacitors, a first storage capacitor and first to third switches. The first liquid crystal capacitor and the first storage capacitor locate between the first pixel electrode and a first common voltage. The second liquid crystal capacitor locates between the first and the second pixel electrodes. The third liquid crystal capacitor locates between the second pixel electrode and the first common voltage. The first switch has ends for receiving a data voltage and a scan signal and coupled to the first pixel electrode. The second switch has ends for receiving a second common voltage and a reset signal and coupled to the first pixel electrode. The third switch has ends for receiving a reset voltage and the reset signal and coupled to the second pixel electrode.