Patent Application
20220043524
The present disclosure relates to a touch display device.
A current goal of a narrow border touch display device is mainly to minimize the width of the border (BM area) of the touch panel. The specific approach is that after the touch panel and the display panel are fully bonded, a part of the touch panel that extends beyond the sensing zone is bent along the non-bonding zone on the outer edge of the display panel to the back of the display panel and then fixed by adhesive.
In order to achieve a narrow border for a touch display device, the cover plate and the display panel are usually fixed and assembled together by only relying on optically clear adhesive (OCA). However, when manufacturing a large-size touch display device (e.g., a touch panel over 55 inches), considering the yield and convenience of assembly, the cover plates must have a certain thickness and weight to maintain a certain degree of toughness. Therefore, it is difficult for the cover plate to be stably fixed and assembled on the display panel by only relying on a layer of OCA.
Accordingly, how to provide a touch display device to solve the aforementioned problems becomes an important issue to be solved by those in the industry.
An aspect of the disclosure is to provide a touch display device that can efficiently solve the aforementioned problems.
According to an embodiment of the disclosure, a touch display device includes a cover plate, a touch module, a frame, and a display module. The touch module is disposed on the cover plate and defines thereon a sensing zone and a peripheral zone connecting each other. The frame is located at a side of the touch module away from the cover plate and includes a plurality of fixing members and an accommodating trough. The fixing members cross the peripheral zone to be fixed to the cover plate. At least one part of the touch module in the peripheral zone is attached to a side of the frame away from the cover plate. The display module is disposed in the accommodating trough and over the sensing zone.
In an embodiment of the disclosure, the touch module has a plurality of through holes in the peripheral zone. The fixing members respectively pass through the through holes to be fixed to the cover plate.
In an embodiment of the disclosure, the touch module includes a first flexible sensing electrode layer. The through holes run through the first flexible sensing electrode layer.
In an embodiment of the disclosure, the touch module further includes a first wiring layer. The first wiring layer is connected to the first flexible sensing electrode layer. At least one of the through holes runs through the first wiring layer.
In an embodiment of the disclosure, the at least one part of the touch module in the peripheral zone includes an outer edge portion of the first flexible sensing electrode layer.
In an embodiment of the disclosure, the touch module further includes a second flexible sensing electrode layer. The first flexible sensing electrode layer and the second flexible sensing electrode layer are stacked on the cover plate. The through holes run through the second flexible sensing electrode layer.
In an embodiment of the disclosure, the touch module further includes a second wiring layer. The second wiring layer is connected to the second flexible sensing electrode layer. At least one of the through holes runs through the second wiring layer.
In an embodiment of the disclosure, the through holes are arranged along at least three edges of the sensing zone.
In an embodiment of the disclosure, the touch display device further includes a plurality of adhesive layers respectively adhered between the fixing members and the cover plate.
In an embodiment of the disclosure, the touch module is a GF2 type touch module or a GFF type touch module.
Accordingly, in the touch display device of the present disclosure, by arranging a plurality of fixing members on the frame configured to carry the display module and making the fixing members cross the peripheral zone outside the sensing zone of the touch panel to be fixed to the cover plate, the assembled structure of the touch module and the display module of large-size can achieve sufficient bearing strength.
It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the disclosure as claimed.
The disclosure can be more fully understood by reading the following detailed description of the embodiments, with reference made to the accompanying drawings as follows:
Reference will now be made in detail to the present embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. However, specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments, and thus may be embodied in many alternate forms and should not be construed as limited to only example embodiments set forth herein. Therefore, it should be understood that there is no intent to limit example embodiments to the particular forms disclosed, but on the contrary, example embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
Reference is made to
Reference is made to
In some embodiments, the adhesive layers 150 are double-sided tapes (e.g., 3M's VHB tapes or other high bond tape having an adhesive strength of at least 60 oz./inch or at least 90 oz./inch) or other equivalent adhesives, but the disclosure is not limited in this regard.
In some embodiments, as shown in
The detailed structure of the touch module 120 is described in further detail below. As shown in
The second flexible sensing electrode layer 124 is stacked on the first flexible sensing electrode layer 121 and attached to the first flexible sensing electrode layer 121 via an optical-grade transparent adhesive OCA2. In detail, the optical-grade transparent adhesive OCA2 is disposed at a side of the first flexible sensing electrode layer 121 away from the cover plate 110. The insulating layer ISO2 is disposed on the optical-grade transparent adhesive OCA2 to shield the surface of the first wiring layer 122 disposed on the first flexible sensing electrode layer 121 in the peripheral zone Z2 and part of the sensing zone Z1. In this way, the effect of line insulation can be achieved. The second flexible sensing electrode layer 124 is disposed on the side of the insulating layer ISO2 away from the first flexible sensing electrode layer 121. The second wiring layer 125 (see
In some embodiments, as shown in
In some embodiments, as shown in
In some embodiments, as shown in
As shown in
In some embodiments, at least one of the first wiring layer 122 or the second wiring layer 125 is a silver wiring layer, but the disclosure is not limited in this regard.
In some embodiments, the touch module 120 is a GF2 type touch module or a GFF type touch module. Specifically, the aforementioned GF2 type means that the first flexible sensing electrode layer 121 and the second flexible sensing electrode layer 124 are distributed on the same substrate. The aforementioned GFF type means that the first flexible sensing electrode layer 121 and the second flexible sensing electrode layer 124 are respectively distributed on two substrates.
In some embodiments, the material of the cover plate 110 includes glass or a flexible polymer material, but the disclosure is not limited in this regard.
In some embodiments, at least one of the first flexible sensing electrode layer 121 or the second flexible sensing electrode layer 124 may be a silver nanowire electrode layer, a metal grid, or an electrode layer including indium tin oxide (ITO), but the disclosure is not limited in this regard.
According to the foregoing recitations of the embodiments of the disclosure, it can be seen that in the touch display device of the present disclosure, by arranging a plurality of fixing members on the frame configured to carry the display module and making the fixing members cross the peripheral zone outside the sensing zone of the touch panel to be fixed to the cover plate, the assembled structure of the touch module and the display module of large-size can achieve sufficient bearing strength.
Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims.
