Detection device and detection method for light emitting element

A detection device, used to detect a light emitting element, the detection device comprising:

• a piezoelectricity sensor, comprising a first piezoelectricity element, wherein the first piezoelectricity element is used to contact a first electrode of the light emitting element to cause a first deformation of the first piezoelectricity element, and the first piezoelectricity element generates a first voltage based on the first deformation to power the first electrode, wherein a second electrode of the light emitting element is coupled to a reference voltage;
• and
• a light sensing circuit, used to sense whether the light emitting element powered by the first voltage emits light,
• wherein the piezoelectricity sensor further comprises:
• a second piezoelectricity element, used to contact the second electrode of the light emitting element to cause a second deformation of the second piezoelectricity element, wherein the second piezoelectricity element generates a second voltage based on the second deformation to power the second electrode.

A detection method for a light emitting element, comprising:

• overlaying a piezoelectricity sensor on the light emitting element, so that a first piezoelectricity element of the piezoelectricity sensor contacts a first electrode of the light emitting element to cause a first deformation of the first piezoelectricity element, wherein a second electrode of the light emitting element is coupled to a reference voltage;
• generating a first voltage based on the first deformation by the first piezoelectricity element to power the first electrode;
• and
• sensing whether the light emitting element powered by the first voltage emits light through a light sensing circuit;
• when overlaying the piezoelectricity sensor on the light emitting element, enabling a second piezoelectricity element of the piezoelectricity sensor to contact the second electrode of the light emitting element to cause a second deformation of the second piezoelectricity element;
• and
• generating a second voltage based on the second deformation by the second piezoelectricity element to power the second electrode.