TOUCH PANEL AND TOUCH DISPLAY DEVICE

• US 20100289770A1
• Filed: 05/07/2010
• Published: 11/18/2010
• Est. Priority Date: 05/13/2009
• Status: Abandoned Application

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: CHU, Cheng-Jen, LEE, Kuo-Sheng
• Application Number:
  US12/775,557
• Publication Number:
  US 20100289770A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch panel includes a thin film transistor (TFT) substrate, a color filter (CF) substrate, at least a touch sensing electrode and at least a conductive bump. The CF substrate is disposed opposite to the TFT substrate. The touch sensing electrode is disposed on the CF substrate. The conductive bump is disposed between the TFT substrate and the CF substrate, and electrically connecting the touch sensing electrode and the TFT substrate.

Claims

1. A touch panel, comprising:

a thin film transistor (TFT) substrate;

a color filter (CF) substrate disposed opposite to the TFT substrate;

at least a first touch sensing electrode disposed on the CF substrate at a side that faces the TFT substrate; and

at least a first conductive bump disposed between the CF substrate and the TFT substrate and electrically connecting the first touch sensing electrode and the TFT substrate.

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

a common electrode disposed on the CF substrate at the side that faces the TFT substrate; and

a color filter layer disposed between the common electrode and the CF substrate.

3. The touch panel as recited in claim 1, further comprising:

at least a second touch sensing electrode disposed opposite to the first touch sensing electrode; and

an insulating layer disposed between the first touch sensing electrode and the second touch sensing electrode.

4. The touch panel as recited in claim 3, wherein a portion of the first touch sensing electrode overlaps a portion of the second touch sensing electrode in a thickness direction of the touch panel.

5. The touch panel as recited in claim 4, wherein a portion of the first or second touch sensing electrode which does not overlap the second or first touch sensing electrode has an enlarged geometrical pattern.

6. The touch panel as recited in claim 4, wherein the overlapping portions of the first and second touch sensing electrodes have a width smaller than portions where the first and second touch sensing electrodes do not overlap.

7. The touch panel as recited in claim 2, further comprising:

at least a second conductive bump disposed between the CF substrate and the TFT substrate and electrically connecting the common electrode and the TFT substrate.

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

a touch sensing control unit disposed on the TFT substrate and electrically connected with the first touch sensing electrode disposed on the CF substrate through the first conductive bump.

9. The touch panel as recited in claim 8, further comprising:

at least one TFT on the TFT substrate; and

a driving unit on the TFT substrate for generating a driving signal to drive said at least one TFT.

10. The touch panel as recited in claim 9, wherein the touch sensing control unit and the driving unit are integrated in a single chip.

11. A touch display apparatus, comprising:

a backlight module; and

a touch panel disposed opposite to the backlight module and having

a thin film transistor (TFT) substrate,

a color filter (CF) substrate disposed opposite to the TFT substrate,

at least a first touch sensing electrode disposed on the CF substrate at a side that faces the TFT substrate, and

at least a first conductive bump disposed between the CF substrate and the TFT substrate and electrically connecting the first touch sensing electrode and the TFT substrate.

12. The touch display apparatus as recited in claim 11, wherein the touch panel further comprises:

a common electrode disposed on the CF substrate at the side that faces the TFT substrate; and

a color filter layer disposed between the common electrode and the CF substrate.

13. The touch display apparatus as recited in claim 12, wherein the touch panel further comprises:

at least a second touch sensing electrode disposed opposite to the first touch sensing electrode; and

an insulating layer disposed between the first touch sensing electrode and the second touch sensing electrode;

wherein a portion of the first touch sensing electrode overlaps a portion of the second touch sensing electrode in a thickness direction of the touch panel.

14. The touch display apparatus as recited in claim 13, wherein a portion of the first or second touch sensing electrode which does not overlap the second or first touch sensing electrode has an enlarged geometrical pattern.

15. The touch display apparatus as recited in claim 13, wherein the overlapping portions of the first and second touch sensing electrodes have a width smaller than portions where the first and second touch sensing electrodes do not overlap.

16. The touch display apparatus as recited in claim 12, wherein the touch panel further comprises:

at least a second conductive bump disposed between the CF substrate and the TFT substrate and electrically connecting the common electrode and the TFT substrate.

17. The touch display apparatus as recited in claim 12, wherein the touch panel further comprises:

a pixel electrode disposed on the TFT substrate at the side that faces the CF substrate; and

a liquid crystal layer disposed between the common electrode and the pixel electrode.

18. The touch display apparatus as recited in claim 11, wherein the touch panel further comprises:

a touch sensing control unit disposed on the TFT substrate and electrically connected with the first touch sensing electrode disposed on the CF substrate through the first conductive bump;

at least one TFT on the TFT substrate; and

a driving unit on the TFT substrate for generating a driving signal to drive said at least one TFT.

19. The touch display apparatus as recited in claim 18, wherein the touch sensing control unit and the driving unit are integrated in a single chip.

20. A touch display apparatus, comprising:

a first substrate;

a second, transparent substrate disposed opposite to the first substrate;

at least a touch sensing electrode disposed on the second substrate;

at least a conductive bump disposed between the first and second substrates and electrically connecting the touch sensing electrode and the first substrate;

a touch sensing control unit disposed on the first substrate and electrically connected with the touch sensing electrode disposed on the second substrate through the conductive bump; and

a driving unit disposed on the first substrate for generating a driving signal to drive said touch display apparatus to display an image viewable through the second, transparent substrate.