Touch sensor module, window stack structure including the same and image display device including the same
A touch sensor module includes a touch sensor layer including sensing electrodes and traces extending from the sensing electrodes, an optical layer on the touch sensor layer to cover the sensing electrodes, a circuit connection structure spaced apart from the optical layer and electrically connected to the traces on an end portion of the touch senor layer, and a colored resin pattern filling a gap between the optical layer and the circuit connection structure. An optical disturbance at the gap is prevented by the colored resin pattern.
1. A touch sensor module, comprising:
a touch sensor layer comprising sensing electrodes and traces extending from the sensing electrodes;
an optical layer on the touch sensor layer to cover the sensing electrodes;
a circuit connection structure spaced apart from the optical layer and electrically connected to the traces on an end portion of the touch senor layer; and
a colored resin pattern filling a gap between the optical layer and the circuit connection structure;
wherein the touch sensor layer comprises an active region in which the sensing electrodes are arranged and a bonding region allocated at a peripheral end portion of the touch sensor layer, and the circuit connection structure are connected to the traces on the bonding region; and
the colored resin pattern at least partially fills a remaining portion of the bonding region except for a region on which the circuit connection structure is disposed in a planar view.
2. The touch sensor module according to claim 1 , wherein a top surface of the optical layer is higher than a top surface of the circuit connection structure.
3. The touch sensor module according to claim 2 , wherein the colored resin pattern contacts sidewalls of the optical layer and the circuit connection structure.
4. The touch sensor module according to claim 3 , wherein the colored resin pattern covers the top surface of the circuit connection structure.
5. The touch sensor module according to claim 4 , wherein the colored resin pattern does not cover the top surface of the optical layer.
6. The touch sensor module according to claim 1 ,
wherein the circuit connection structure is electrically connected to the end portions of the traces on the bonding region.
7. The touch sensor module according to claim 1 , wherein the optical layer includes at least one of a polarizer, a polarizing plate, a retardation film, a reflective sheet, a luminance enhancing film or a refractive index matching film.
8. The touch sensor module according to claim 1 , wherein the circuit connection structure includes a flexible printed circuit board (FPCB).
9. The touch sensor module according to claim 8 , further comprising a conductive intermediate structure interposed between the traces and the circuit connection structure.
10. The touch sensor module according to claim 9 , wherein a conductive intermediate structure includes an anisotropic conductive film (ACF).
11. The touch sensor module according to claim 1 , wherein the colored resin pattern includes an adhesive resin.
12. A window stack structure, comprising:
a window substrate; and
the touch sensor module according to claim 1 on the window substrate.
13. An image display device, comprising:
a display panel; and
the touch sensor module according to claim 1 on the display panel.
14. The image display device according to claim 13 , further comprising a main board disposed below the touch sensor module,
wherein the circuit connection structure of the touch sensor module is bent to be electrically connected to the main board.