Touch display apparatus

1. A touch display apparatus, comprising:

a display panel including a first substrate and a second substrate disposed oppositely, wherein the first substrate has a first side, the second substrate has a second side corresponding to the first side, and the first side is disposed beyond the second side;

a touch panel, including a touch substrate, wherein the second substrate is disposed between the touch substrate and the first substrate, and the area of the touch substrate is less than or equal to that of the second substrate, wherein the touch substrate has a third side, and the second substrate has a side corresponding to the third side, and the third side is disposed beyond the side of the second substrate corresponding to the third side; and

a buffer element disposed between the touch substrate and the first substrate and adjacent to the third side of the touch substrate, wherein the buffer element has a lengthwise direction, and along the lengthwise direction, the buffer element has a first length, the first substrate has a second length and the touch substrate has a third length, and the first length is less than or equal to the second length and is larger than or equal to the third length.

2. The touch display apparatus as recited in claim 1 , further comprising:

a circuit connection board disposed to the touch substrate and electrically connected to the touch substrate.

3. The touch display apparatus as recited in claim 2 , wherein the circuit connection board and the first substrate at least partially overlap each other on a projected plane parallel to the first substrate.

4. The touch display apparatus as recited in claim 2 , wherein the circuit connection board and the second substrate at least partially overlap each other on a projected plane parallel to the second substrate.

5. The touch display apparatus as recited in claim 1 , wherein the display panel further includes an optical film which is disposed between the second substrate and the touch substrate.

6. The touch display apparatus as recited in claim 1 , further comprising:

a backlight module disposed on the side of the display panel away from the touch substrate;

a plastic frame adjacent to the backlight module, wherein the display panel is disposed to the plastic frame; and

a back plate, wherein the plastic frame and the backlight module are disposed to the back plate.

7. The touch display apparatus as recited in claim 6 , wherein the plastic frame and the back plate are connected to each other by locking or adhesion.

8. The touch display apparatus as recited in claim 1 , further comprising:

a backlight module disposed on the side of the display panel away from the touch substrate;

an adhesive element by which the touch substrate and the display panel are connected to each other; and

a back plate to which the backlight module is disposed.

9. The touch display apparatus as recited in claim 6 , further comprising:

a light blocking element extending from the back plate to the edge of the touch substrate.

10. The touch display apparatus as recited in claim 8 , further comprising:

a light blocking element extending from the back plate to the edge of the touch substrate.

11. The touch display apparatus as recited in claim 6 , further comprising:

a front frame disposed at the edge of the touch substrate and including a blocking portion, which is disposed above the touch substrate and has a surface, wherein an angle is formed between an extension of the surface and an upper surface of the touch substrate, and the angle is between 5° and 30°.

12. The touch display apparatus as recited in claim 8 , further comprising:

a front frame disposed at the edge of the touch substrate and including a blocking portion, which is disposed above the touch substrate and has a surface, wherein an angle is formed between an extension of the surface and an upper surface of the touch substrate, and the angle is between 5° and 30°.

13. The touch display apparatus as recited in claim 1 , further comprising:

an appearance element disposed around the touch substrate and the display panel, wherein a top surface of the appearance element and a surface of the touch substrate have a height difference that is between 0 and 1 mm.

14. A touch display apparatus, comprising:

a display panel including a first substrate and a second substrate disposed oppositely, wherein the first substrate has a first side, the second substrate has a second side corresponding to the first side, and the first side is disposed beyond the second side;

a touch panel, including a touch substrate, wherein the second substrate is disposed between the touch substrate and the first substrate, and the area of the touch substrate is less than or equal to that of the second substrate;

a backlight module disposed on the side of the display panel away from the touch substrate;

a plastic frame adjacent to the backlight module, wherein the display panel is disposed to the plastic frame;

a back plate, wherein the plastic frame and the backlight module are disposed to the back plate; and

a light blocking element extending from the back plate to the edge of the touch substrate.

15. A touch display apparatus, comprising:

a display panel including a first substrate and a second substrate disposed oppositely, wherein the first substrate has a first side, the second substrate has a second side corresponding to the first side, and the first side is disposed beyond the second side;

a touch panel, including a touch substrate, wherein the second substrate is disposed between the touch substrate and the first substrate, and the area of the touch substrate is less than or equal to that of the second substrate;

a backlight module disposed on the side of the display panel away from the touch substrate;

an adhesive element by which the touch substrate and the display panel are connected to each other;

a back plate to which the backlight module is disposed; and

a light blocking element extending from the back plate to the edge of the touch substrate.