Gate driving integrated circuit for a touch display and operating method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsChang-Ju Lee, Jaeho Park, YoonKyung Choi
Life of this patent
Estimating the term…
Abstract
Embodiments relate to a gate driving integrated circuit and an operating method thereof operating in a time-division method divided into a display period and a touch period. The gate driving integrated circuit includes a charging circuit, a gate control circuit, and a discharging circuit. The charging circuit charges a memory element. The discharging circuit discharges the memory element. The gate control circuit outputs a gate-on voltage to a gate line based on the charged memory element in during display period. The gate control circuit electrically disconnects the memory element from the gate control circuit during the touch period.
Claims18
A gate driving integrated circuit operating in a time-division method divided into a display period and a touch period, the gate driving integrated circuit comprising:
- a charging circuit to charge a memory element during a charging time of the display period;
- a gate control circuit including the memory element, the gate control circuit to output a gate-on voltage to a gate line based on the charged memory element during a control time of the display period;
- and
- a discharging circuit to discharge the charged memory element during a discharging time of the display period,
- wherein the gate control circuit is further to electrically disconnect the memory element from the gate control circuit during the touch period,
- wherein the gate control circuit further includes:
- a gate voltage transmission element;
- and
- a first switching element connected between the gate voltage transmission element and the memory element, wherein the first switching element turns on to provide a voltage from the charged memory element to the gate voltage transmission element such that the gate voltage transmission element is turned on by the voltage from the charged memory element provided via the first switching element to provide the gate-on voltage to the gate line based on the voltage from the charged memory element during the control time,
- wherein the first switching element electrically disconnects the memory element from the gate voltage transmission element to turn off the gate voltage transmission element during the touch period.
A gate driving integrated circuit operating in a time-division method divided into a display period, a touch period, and a transient period between the display period and the touch period, the gate driving integrated circuit comprising:
- a gate line;
- and
- a shift register outputting a gate-on voltage to the gate line during a portion of the display period and outputting a touch gate voltage to the gate line during the touch period,
- wherein the shift register includes:
- a gate voltage transmission element;
- and
- a switching element connected between the gate voltage transmission element and a memory element, wherein:
- the memory element is charged by a charging circuit,
- the first switching element turns on to provide a voltage from the charged memory element to the gate voltage transmission element such that the gate voltage transmission element is turned on by the voltage from the charged memory element provided via the first switching element to provide the gate-on voltage to the gate line based on the voltage from the charged memory element during the portion of the display period, and
- the switching element electrically connects the gate voltage transmission element to the memory element during the display period, and electrically disconnecting the gate voltage transmission element from the memory element to turn off the gate voltage transmission element during the touch period and the transient period.
An operating method of a gate driving integrated circuit operating in a time-division method divided into a display period a touch period, the method comprising:
- charging a memory element, included in the gate driving integrated circuit, by a charging circuit during a charging time of the display period;
- turning on a gate voltage transmission element by providing a voltage to the gate voltage transmission element from the memory element, the voltage being based on a level of charge of the charged memory element, by turning on a switching element connected between the gate voltage transmission element and the memory element such that the gate voltage transmission element is turned on by the voltage from the charged memory element provided via the first switching element to provide a gate-on voltage to a gate line based on the voltage from the charged memory element, during a control time of the display period;
- and
- electrically disconnecting the memory element from the gate voltage transmission element, by turning off the switching element, to turn off the gate voltage transmission element during the touch period after the display period.
Dependencies are inferred from the claim text.