TW201514779A - Touch panel and touch display device having the touch panel - Google Patents

Abstract

The present invention provides a touch panel and a touch display device having the touch panel. The touch panel includes a touch area and a signal trace area surrounding the touch area. The signal trace area includes a plurality of electric signal traces of the touch panel. At least one reference line for is formed within the trace area. The at least one reference line is arranged at an outer side of the trace area and is formed by a plurality of metal blocks aligned and spaced with each other. The at least one reference line is used by a detector to detect whether glues attached on the touch panel are lack by detecting whether the at least one reference line is covered by the glues during an assembly process of the touch display device.

Description

Touch panel and touch display device having the same

The present invention relates to a touch panel and a touch display device having the same.

A touch panel applied to various touch display terminals includes a touch sensing area and a routing area located around the touch sensing area. At present, most of the contact between the touch panel and the glass plate for protecting the touch panel is bonded by optical glue, such as OCR (Optical Clear Resin) and OCA (Optical Clear Adhesive). . In the process of bonding the touch panel to the glass plate using the optical glue, when the production line personnel performs the glue defect detection, it is judged that the lack of glue is based on whether the optical glue has completely covered all the metal in the route area through the naked eye. Metal trace. However, in the design of the wiring, due to the limitations of the space, many metal traces may not go out of the line, so that the production line personnel can not make a quick judgment, which may lead to misjudgment in the actual operation, affecting the quality of the product. In addition, since the wiring area has a large number of conductive signal lines, electrostatic interference is apt to occur.

In order to solve the above problems, it is necessary to provide a touch panel which can facilitate the inspector to perform quick glue inspection in the process of bonding the touch panel and the glass cover.

The touch panel provided by the present invention includes: a touch area and a trace area surrounding the touch area around the touch area, the trace area includes various conductive signal lines required by the touch panel, and at least one missing line is disposed in the trace area a glue inspection reference line formed by a plurality of metal blocks spaced apart and located outside the conductive signal line in the routing area, the missing glue inspection reference line being used in a display device using the touch panel In the laminating process, it is convenient for the inspector to perform the lack of glue inspection by using the method of checking whether the optical adhesive covers the defect inspection reference line.

The present invention also provides a touch display device, comprising: a glass cover, a touch panel, a display module, and a housing, wherein the touch panel and the display module are received in a receiving space formed by the glass cover and the housing, the touch The panel is bonded to the glass cover through an optical adhesive. The touch panel includes a touch area and a routing area surrounding the touch area around the touch area. The routing area includes various conductive signal lines required by the touch panel. At least one missing glue inspection reference line is disposed in the routing area, located outside the conductive signal line in the routing area, and is formed by a plurality of metal blocks spaced apart for providing the inspection personnel to the touch panel and using the touch In the bonding process of the glass cover of the touch display device of the panel, the lack of glue inspection is performed by checking whether the optical adhesive covers the defect inspection reference line.

Preferably, the metal block is polygonal in shape with opposite tips for absorbing static electricity and being released at the tip.

Compared with the prior art, the touch panel of the present invention is provided with a linear defect inspection reference line at the periphery of the wire signal line inside the routing area, so that the inspector can perform the bonding process of the touch panel and the glass cover. The defect inspection can be quickly performed by checking whether the optical glue covers the defect inspection reference line, thereby reducing false positives. In addition, the metal block forming the defect inspection reference line can also absorb ESD and be released through the tip, further enhancing the anti-ESD capability of the touch panel.

1 is an exploded perspective view of a preferred embodiment of a touch display device with a touch panel provided by the present invention.

Figure 2 is a cross-sectional view taken along line V-V of Figure 1.

3 is a schematic plan view of the touch panel.

Figure 4 is an enlarged schematic view of the position II in Figure 3.

Referring to FIG. 1 and FIG. 2 , the touch display device 1 provided by the present invention includes a glass cover 10 , a touch panel 20 , a display module 30 , and a housing 50 . The touch panel 20 and the display module 30 are housed in a receiving space formed by the glass cover 10 and the casing 50 .

The glass cover 10, the touch panel 20, and the display module 30 are stacked on each other. The touch panel 20 is bonded to the glass cover 10 and the display module 30 through the optical adhesive 40. The optical adhesive 40 may be, but not limited to, an optically clear adhesive (OCA) or an optically clear resin (OCR) having a high light transmittance.

Referring to FIG. 3 , the touch panel 20 includes a touch area 200 and a routing area 210 surrounding the touch area 200 around the touch area 200 . The wiring area 210 is used for the wiring design of the conductive signal lines of the touch panel 20, which includes various conductive signal lines required for the touch panel 20.

In this embodiment, the conductive signal line in the routing area 210 is a metal trace disposed around the side of the touch area 200, and the metal trace is a straight line or a broken line.

When the wiring design is performed within the range of the trace area 210, due to the limitation of the wiring space, the conductive signal lines may not all be designed as linear traces, and some of them may be designed as fold line traces. Thus, the overall wiring in the wiring region 210 has a non-linear shape similar to a trapezoid. In the process of bonding the touch panel 20 and the cover glass 10 using the optical adhesive, the touch panel 20 and the cover glass 10 are bonded together by applying an optical glue on the conductive signal lines in the wiring region 210. In the process of the bonding, the glue inspection is required. Since the overall wiring in the routing area 210 is not linear, it is inconvenient for the inspector to directly judge whether the conductive signal lines in the routing area 210 are all covered with the optical glue.

In the present invention, in order to facilitate the inspection personnel to perform the lack of glue inspection in the process of bonding the touch panel 20 and the glass cover 10, at least one missing glue inspection reference line 300 is disposed in the routing area 210, and the at least one lack of glue The inspection reference line 300 is located outside the conductive signal line designed in the routing area 210 and corresponds to at least one side of the touch area 200. The lack of glue inspection reference line 300 is a straight line.

Preferably, in an embodiment, a region of the non-linear design of the conductive signal line is disposed in the trace region 210, and a missing glue inspection reference line 300 is disposed corresponding to the corresponding side of the touch region 200. For example, as shown in FIG. 3, one of the left and right sides of the routing area 210 is provided with a missing glue inspection reference line 300 corresponding to the left and right sides of the touch area 200.

In other embodiments, a missing glue inspection reference line 300 may be formed on each of the four sides or three sides of the routing area 210 as needed, or only one of the missing inspection inspection lines may be formed on one side of the routing area 210. 300.

As shown in FIG. 4, it is an enlarged schematic view at position II in FIG. In this embodiment, the missing glue inspection reference line 300 is a broken line formed by a plurality of metal blocks 310 arranged at intervals, the broken line is a straight line, and each two adjacent metal blocks 310 are spaced apart from each other by a certain distance. Preferably, in the present embodiment, the metal block 310 is a hexagonal metal block having two opposite tips 311. In other embodiments, the shape of the metal block 310 is not limited thereto, and may be a quadrilateral having a relatively two pointed ends and other types of polygonal shapes such as a diamond shape. The metal block 310 is used to absorb Electro-Static Discharge (ESD) and is released at the tip 311 at both ends. For example, the static electricity brought by the outside person to the touch panel 20 is absorbed and released through the two pointed ends, thereby avoiding the influence of static electricity on the touch panel 20. Preferably, in the embodiment, the metal block 310 is made of a copper material. The missing glue inspection reference line 300 is located in the same metal layer as the conductive signal line inside the routing area 210, and can be formed by etching using the same conductive material in the same process as the conductive signal line.

Since the touch panel 20 of the present invention has a linear defect inspection reference line 300 located around the wire signal line inside the routing area 210, even if there is a non-linear type of wiring design in the routing area, the inspector can pass the inspection optical glue. Whether or not the method of covering the missing glue inspection reference line 300 is performed quickly performs a lack of glue inspection, thereby reducing false positives. In addition, since the metal block 310 forming the missing glue inspection reference line 300 can also absorb ESD and be released through the tip 311, the anti-ESD capability of the touch panel 20 is further enhanced.

In summary, the creation meets the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be equivalently modified or changed according to the spirit of the present invention. It should be covered by the following patent application.

1‧‧‧Touch display device

10‧‧‧ glass cover

20‧‧‧ touch panel

30‧‧‧Display module

40‧‧‧Optical adhesive

50‧‧‧shell

200‧‧‧ touch area

210‧‧‧Wiring area

300‧‧‧ lack of glue inspection baseline

310‧‧‧metal block

311‧‧‧ pointed

no

20‧‧‧ touch panel

200‧‧‧ touch area

210‧‧‧Wiring area

300‧‧‧ lack of glue inspection baseline

Claims (11)

A touch panel includes: a touch area and a trace area surrounding the touch area, the trace area includes various conductive signal lines required for the touch panel, and at least one defect inspection reference is set in the trace area a line, the glue inspection reference line is formed by a plurality of metal blocks spaced apart and located outside the conductive signal line in the routing area, and the glue inspection reference line is used for a bonding process of the display device using the touch panel In the middle, it is convenient for the inspector to perform the lack of glue inspection by using the method of checking whether the optical glue covers the defect inspection reference line. The touch panel of claim 1, wherein a blank inspection reference line is disposed on one side of the non-linear design conductive signal line in the routing area. The touch panel of claim 1, wherein one of the left and right sides of the routing area is provided with a missing glue inspection reference line corresponding to the left and right sides of the touch area. The touch panel of claim 1, wherein the lack of glue inspection reference line is a dashed line formed by spacing of the plurality of metal blocks, the dashed line being a straight line, and each adjacent two metal blocks are spaced apart by a certain distance. The touch panel of claim 1, wherein the metal block has a polygonal shape with opposite tips for absorbing static electricity and being released at the tip. The touch panel of claim 1, wherein the missing glue inspection reference line is located in the same metal layer as the conductive signal line inside the wiring area, and is formed by etching with a conductive material in the same process as the conductive signal line. A touch display device includes: a glass cover, a touch panel, a display module, and a housing. The touch panel and the display module are received in the receiving space formed by the glass cover and the housing, and the touch panel transmits the optical adhesive. The touch panel includes a touch area and a trace area surrounding the touch area around the touch area, where the trace area includes various conductive signal lines required by the touch panel, and the trace area is within the trace area Providing at least one missing glue inspection reference line formed by a plurality of metal blocks spaced apart and located outside the conductive signal line in the routing area, the missing glue inspection reference line being used on the touch panel In the laminating process of the glass cover plate, it is convenient for the inspector to perform the lack of glue inspection by using the method of checking whether the optical adhesive covers the defect inspection reference line. The touch display device according to claim 7, wherein a defect inspection reference line is disposed on one side of the non-linear design conductive signal line in the routing area. The touch display device of claim 7, wherein the metal block has a polygonal shape with opposite tips for absorbing static electricity and being released at the tip. The touch display device of claim 7, wherein the missing glue inspection reference line is located in the same metal layer as the conductive signal line inside the wiring area, and is formed by etching with a conductive material in the same process as the conductive signal line. The touch display device of claim 7, wherein the lack of glue inspection reference line is a dashed line formed by spacing of the plurality of metal blocks, the dashed line being a straight line, and each adjacent two metal blocks are separated by a certain distance. .