Method of detecting a touch image and display apparatus for performing the same

1. A method of detecting a touch image, the method comprising:

driving a light source to detect a first touch information corresponding to a first light amount sensed by a first sensing section connected to odd-numbered gate lines during an odd-numbered frame;

driving the light source to detect a second touch information corresponding to a second light amount sensed by a second sensing section connected to even-numbered gate lines, during an even-numbered frame; and

detecting a touch image using the first touch information and the second touch information,

wherein the odd-numbered gate lines and even-numbered gate lines are electrically independent of gate lines to display an image,

wherein driving the light source to detect the first touch information comprises:

reading out a first accumulated light amount from the first sensing section during a first odd-numbered field of the odd-numbered frame while the light source is turned on;

reading out a second accumulated light amount smaller in magnitude than the first accumulated light amount from the first sensing section during a second odd-numbered field of the odd-numbered frame while the light source is turned off; and

detecting the first touch information using the first accumulated light amount and the second accumulated light amount.

2. The method of claim 1 , wherein reading out the first accumulated light amount comprises simultaneously reading out the first accumulated light amount from the first sensing section connected to two adjacent odd-numbered gate lines of the odd-numbered gate lines, and

reading out the second accumulated light amount comprises simultaneously reading out the second accumulated light amount from the first sensing section connected to two adjacent odd-numbered gate lines of the odd-numbered gate lines.

3. The method of claim 1 , wherein reading out the first accumulated light amount comprises reading out the first accumulated light amount from the first sensing section individually connected to individual gate lines of the odd-numbered gate lines, and

reading out the second accumulated light amount comprises reading out the second accumulated light amount from the first sensing section individually connected to individual gate lines of the odd-numbered gate lines.

4. The method of claim 1 , wherein driving the light source to detect the first touch information comprises:

converting the first accumulated light amount into a first accumulated light amount value having a digital value;

converting the second accumulated light amount into a second accumulated light amount value having a digital value; and

calculating the first touch information using the first accumulated light amount and the second accumulated light amount.

5. The method of claim 1 , wherein driving the light source to detect the second touch information comprises:

reading out a third accumulated light amount from the second sensing section during a first even-numbered field of the even-numbered frame while the light source is turned on;

reading out a fourth accumulated light amount smaller than the third accumulated light amount from the second sensing section during a second even-numbered field of the even-numbered frame while the light source is turned off; and

detecting the second touch information using the third accumulated light amount and the fourth accumulated light amount.

6. The method of claim 5 , wherein reading out the third accumulated light amount comprises simultaneously reading out the third accumulated light amount from the second sensing section connected to two adjacent even-numbered gate lines of the even- numbered gate lines, and

reading out the fourth accumulated light amount comprises simultaneously reading out the fourth accumulated light amount from the second sensing section connected to two adjacent even-numbered gate lines of the even-numbered gate lines.

7. The method of claim 5 , wherein reading out the first accumulated light amount comprises reading out the third accumulated light amount from the second sensing section individually connected to individual gate lines of the even-numbered gate lines, and

reading out the fourth accumulated light amount comprises reading out the fourth accumulated light amount from the second sensing section individually connected to individual gate lines of the even-numbered gate lines.

8. The method of claim 5 , wherein driving the light source to detect the second touch information further comprises:

converting the third accumulated light amount into a third accumulated light amount value having a digital value;

converting the fourth accumulated light amount into a fourth accumulated light amount value having a digital value; and

calculating the second touch information using the first accumulated light amount and the second accumulated light amount.

9. The method of claim 1 , wherein the first sensing section is separated from the second sensing section.

10. A display apparatus comprising:

a touch display panel comprising:

a display substrate which displays an image; and

a touch substrate disposed substantially opposite the display substrate and having a first sensing section connected to odd-numbered gate lines thereof and a second sensing section connected to even-numbered gate lines thereof, the odd-numbered gate lines and even-numbered gate lines of the touch substrate are electrically independent of gate lines of the display substrate;

a light source comprising:

a light source part; and

a light source driving part which drives the light source part during an odd-numbered frame and an even-numbered frame subsequent to the odd-numbered frame;

a sensing driving section which drives the odd-numbered gate lines during the odd-numbered frame to read out a first light amount sensed by the first sensing section, and which drives the even-numbered gate lines during the even-numbered frame to read out a second light amount sensed by the second sensing section; and

a touch image detecting section which detects a first touch information corresponding to the first light amount, a second touch information corresponding to the second light amount, and which creates a touch image using the first touch information and the second touch information,

wherein the sensing driving section comprises:

a first sensing gate driving part which drives the odd-numbered gate lines during the odd-numbered frame;

a second sensing gate driving part which drives the even-numbered gate lines during the even-numbered frame; and

a read out driving part which reads out the first light amount from the first sensing section during the odd-numbered frame, and which reads out the second light amount form the second sensing section during the even-numbered frame, and

the light source part turns on the light source during a first odd-numbered field of the odd-numbered frame, turns off the light source during a second odd-numbered field of the odd-numbered frame, turns on the light source during a first even-numbered field of the even-numbered frame, and turns off the light source during a second even-numbered field of the even-numbered frame.

11. The display apparatus of claim 10 , wherein the read out driving part reads out a first accumulated light amount from the first sensing section when the light source is turned on during the first odd-numbered field of the odd-numbered frame,

the read out driving part reads out a second accumulated light amount which is smaller in magnitude than the first light amount from the first sensing section when the light source is turned off during the second odd-numbered field of the odd-numbered frame,

the read out driving part reads out a third accumulated light amount from the second sensing section when the light source is turned on during the first even-numbered field of the even-numbered frame, and

the read out driving part reads out a fourth accumulated light amount smaller in magnitude than the third accumulated light amount from the sensing section when the light source is turned off during a second even-numbered field of the even-numbered frame.

12. The display apparatus of claim 11 , wherein the touch image detecting section comprises:

a receiving part which receives the first to fourth accumulated light amounts from the read out driving part;

a digital converting part which converts the first to fourth accumulated light amounts into first to a fourth accumulated light amount values, respectively, each of which have digital values;

a calculation part which calculates the first touch information corresponding to the first light amount sensed by the first sensing section using the first accumulated light amount value and the second accumulated light amount value, and which calculates the second touch information corresponding to the second light amount sensed by the second sensing section using the third accumulated light amount value and the fourth accumulated light amount value; and

a detecting part which detects the touch image by combining the first touch information with the second touch information.

13. The display apparatus of claim 12 , wherein the touch image detecting section further comprises:

a first storage part which stores the first touch information; and

a second storage part which stores the second touch information.

14. The display apparatus of claim 10 , wherein the touch substrate further comprises a common line, and

the common line commonly connects adjacent odd-numbered sensing gate lines and the first sensing gate driving part to simultaneously drive the adjacent odd-numbered sensing gate lines, and commonly connects adjacent even-numbered sensing gate lines and the second sensing gate driving part to simultaneously drive the adjacent even-numbered sensing gate lines.

15. The display apparatus of claim 10 , wherein each of the odd-numbered sensing gate lines is connected to the first sensing gate driving part to be respectively sequentially driven, and

each of the even-numbered sensing gate lines is sequentially connected to the second sensing gate driving part to be respectively driven.

16. The display apparatus of claim 10 , wherein each of the first and second sensing sections comprises:

a first sensing element part comprising an infrared light sensor which senses an infrared light corresponding to an internally supplied light provided from the light source and an external light provided from an outside thereof, and a first capacitor which accumulates the internal light and the external light sensed by the infrared light sensor; and

a second sensing element part comprising a visible light sensor which senses a visible light corresponding to the internally supplied light and the external light, and a second capacitor which accumulates the visible light sensed by the visible light sensor.

17. The display apparatus of claim 10 , wherein the display substrate comprises a first substrate, a pixel switching element and an array layer.

18. The display apparatus of claim 10 , wherein the first sensing section is separated from the second sensing section.