Optical sensing circuit, optical sensing circuit array, and method for determining light color by using the same

An optical sensing circuit array, comprising:

• a plurality of optical sensing circuits, at least comprising a first optical sensing circuit, a second optical sensing circuit, and a third optical sensing circuit, wherein each optical sensing circuit comprises:
• a capacitor;
• a light sensing unit, electrically connected to the capacitor and configured to sense a first color;
• a compensation unit, electrically connected to the capacitor and configured to sense a second color;
• and
• a switching element, electrically connected to the capacitor;
• at least one signal line, configured to provide at least one operating signal to the light sensing unit of the first optical sensing circuit, the light sensing unit of the second optical sensing circuit, and the light sensing unit of the third optical sensing circuit;
• and
• at least one scan line, configured to provide at least one scan signal to control the switching element of the first optical sensing circuit, the switching element of the second optical sensing circuit, and the switching element of the third optical sensing circuit;
• wherein under the situation that one of the at least one operating signal is enabled, when a light illuminates a corresponding light sensing unit and a corresponding compensation unit, a first light component of the light corresponding to the first color causes the corresponding light sensing unit to generate a first current, and a second light component of the light corresponding to the second color causes the corresponding compensation unit to generate a second current;
• wherein when the second current is substantially zero, the charging current or the discharging current corresponding to the current amount of the first current charges or discharges a corresponding capacitor;
• wherein when the second current is not zero, the charging current or the discharging current corresponding to the current amount of the first current reduced by the second current charges or discharges the corresponding capacitor;
• wherein when one of the at least one scan signal is enabled and causes a corresponding switching element to be turned on, the voltage of the corresponding capacitor is read as information for determining the color of the light by a controller;
• wherein the corresponding light sensing unit and the corresponding compensation unit are disposed in a first configuration or a second configuration;
• wherein in the first configuration, the corresponding light sensing unit comprises a first light sensing element and a second light sensing element, and the corresponding compensation unit comprises a third light sensing element;
• wherein in the second configuration, the corresponding light sensing unit comprises the first light sensing element, the corresponding compensation unit comprises the second light sensing element and the third light sensing element;
• wherein the first light sensing element is capable of sensing one of a red light, a green light, and a blue light, the second light sensing element is capable of sensing another of the red light, the green light, and the blue light, and the third light sensing element is capable of sensing the other of the red light, the green light, and the blue light;
• wherein in the first configuration, the first color is formed by mixing two of the red light, the green light, and the blue light corresponding to the first light sensing element and the second light sensing element;
• wherein in the second configuration, the first color is corresponding to one of the red light, the green light, and the blue light corresponding to the first light sensing element.