TWI695302B - Touch panel - Google Patents

Abstract

The present invention is a touch panel comprised: a protective layer, a display layer and an electrode layer having a long side and a short side. The electrode layer comprised a sensing electrode layer having a plurality of sensing electrodes extending in a first direction and sequentially arranged in parallel along the second direction, and a driving electrode layer disposed under the sensing electrode layer having a plurality of driving electrodes extending along the second direction and sequentially arranged in parallel along the first direction. The sensing electrode has a sensing long-side lead and a sensing short-side lead extending separately from one end of the sensing electrode and the other end of the sensing electrode. The driving electrode has a drive long-side lead and a drive short-side lead extending separately from one end of the driving electrode and the other end of the driving electrode.

Description

Touch panel

The invention relates to the design of a touch panel.

Despite the development of the current technology, the quality of touch devices has been continuously improved, from the past flat touch displays to the current curved touch displays. Among them, curved touch displays have special characteristics because of their flexible characteristics. It has attracted much attention and has a wider range of applications than flat touch displays. However, for the user's needs, the curved touch display can be designed with a short side curved as a columnar display, or can be designed with a long side curved as a spacious large-scale display. Because the screen itself has a curvature, it allows the user to View or control the display from multiple angles and directions.

As mentioned above, in order to match the design of the curved surface, the protective glass and the sensing film on the touch panel must also be designed as a curved surface, and the trace design of the sensing film must also be designed according to the required bending angle However, in response to today's market demand, touch panels require high degree of customization. Different bending methods require different designs. If the bending is too large, it is easy to cause the risk of cracking the terminal portion of the side electrical connection to the flexible circuit board. The risk of cracking caused by the bending of the terminal portion electrically connected to the flexible circuit board, and the high degree of customization required today, a panel design with an ultra-high elasticity design is urgently needed. Therefore, to solve the above-mentioned conventional problems and deficiencies, it is the inventors of the present invention and related manufacturers engaged in this industry who are desperately looking for ways to improve.

Therefore, in view of the above-mentioned deficiencies, the inventors of the present invention have collected relevant data, evaluated and considered through multiple parties, and based on years of experience in this industry, through continuous trial and modification, they have designed such invention patents.

An object of the present invention is to provide a touch panel including a protective layer, a display layer, and an electrode layer disposed between the protective layer and the display layer and having long sides and short sides. The electrode layer includes: sensing electrode layers (RX) having a plurality of sensing electrodes extending along a first direction and sequentially parallel along a second direction crossing the first direction, and having a plurality of driving electrode edges Drive electrode layers (TX) extending in the second direction and sequentially arranged in parallel along the first direction.

The sensing electrode has a sensing long-side lead extending from one end of the sensing electrode to the long side, and a sensing short-side lead extending from the other end of the sensing electrode to the short side. The driving electrode has a driving long-side lead extending from one end of the driving electrode to the long side, and a driving short-side lead extending from the other end of the driving electrode to the short side.

Further, the sensing electrode layer and the driving electrode layer between the protective layer, the display layer, and the electrode layer can be bonded with a transparent adhesive, for example: optically clear adhesive (OCA).

Further, the sensing long-side lead has a long-side sensing terminal portion at the long side, and the sensing short-side lead has a short-side sensing terminal portion at the short side.

Further, the driving long-side lead has a long-side driving terminal portion at the long side, and the driving short-side lead has a short-side driving terminal portion at the short side.

Further, the long-side sensing terminal part, the short-side sensing terminal part, the long-side driving terminal part or the short-side driving terminal part are used to be electrically connected to one end of the flexible circuit board or to the flexible circuit board of the control board.

Further, the first direction crosses the second direction, where the first direction may be the Y-axis direction and the second direction may be the X-axis direction, or any other direction.

Further, the sensing electrode transmits the sensing signal through the long-side sensing terminal portion or the short-side sensing terminal portion, and the driving electrode transmits the driving signal through the long-side driving terminal portion or the short-side driving terminal portion.

In order to achieve the above objectives and effects, the technical means and structure adopted by the present invention, the drawings and details of the preferred embodiments of the present invention are described in detail in terms of its features and functions. The size of the coating and the range can be exaggerated. It is understood that such content is not sufficient to limit the cost of the invention.

Referring to FIG. 1, which is an exploded view of a touch panel according to an embodiment of the present invention, it can be seen that a touch panel 1 of the present invention includes a protective layer 11, a display layer 12, and an electrode layer 2 at the edges of the electrode layer 2 It has a long side 21 and a short side 22, and is disposed between the protective layer 11 and the display layer 12. The electrode layer 2 further includes a sensing electrode layer 3 and disposed on the sensing electrode layer 3 A driving electrode layer 4 (in the present invention, the driving electrode layer 4 is not limited to be disposed under the sensing electrode layer 3, but can also be disposed above the sensing electrode layer 3), wherein the protective layer 11 The sensing electrode layer 3 and the driving electrode layer 4 between the display layer 12 and the electrode layer 2 can be bonded using a transparent adhesive 5, such as optical adhesive (OCA).

Further referring to FIG. 2, which is a schematic diagram of a sensing electrode layer RX according to an embodiment of the present invention. As can be seen from the figure, the sensing electrode layer 3 includes a plurality of sensing electrodes 31 extending along a first direction 91, and a plurality of the sensing electrodes 31 The sensing electrodes 31 are sequentially arranged in parallel along a second direction 92 crossing the first direction 91. Each of the sensing electrodes 31 has a sensing long side lead 311 extending from one end of the sensing electrode 31 to the long side 21, and has a sensing short side lead 312 from the other end of the sensing electrode 31 Extending to the short side 22, referring to the figure, the right side of any of the sensing electrodes 31 is the sensing long side lead 311, and the left side of any of the sensing electrodes 31 is the sensing short side Lead 312. From the figure, any of the sensing long-side leads 311 has a long-side sensing terminal portion 3111 at the long side 21, and any of the sensing short-side leads 312 has a short side at the short side 22 The terminal portion 3121 is sensed.

In summary, any of the sensing electrodes 31 can be electrically connected to a first flexible circuit board 6 or other conductive wires or leads with transmission properties through the long-side sensing terminal portion 3111 or the short-side sensing terminal portion 3121 To receive or transmit the sensing signal to the controller or other unit using the touch panel of the embodiment of the present invention.

Further referring to FIG. 3, which is a schematic diagram of a driving electrode layer TX according to an embodiment of the present invention. As can be seen from the figure, the driving electrode layer 4 includes a plurality of driving electrodes 41 extending along the second direction 92, and the plurality of driving electrodes 41 are along The first direction 91 crossing the second direction 92 is sequentially arranged in parallel. Each of the driving electrodes 41 has a driving long side lead 411 extending from one end of the driving electrode 41 to the long side 21, and has a driving short side lead 412 extending from the other end of the driving electrode 41 to the short side At 22, referring to the figure, the lower end of any of the driving electrodes 41 is the driving long-side lead 411, and the upper end of any of the driving electrodes 41 is the driving short-side lead 412. As shown in the figure, any of the driving long-side leads 411 has a long-side driving terminal portion 4111 at the long side 21, and any of the driving short-side leads 412 has a short-side driving terminal at the short side 22部4121.

In summary, any one of the drive electrodes 41 can be electrically connected to a second flexible circuit board 7 or other conductive wires or leads with transmission properties through the long-side drive terminal portion 4111 or the short-side drive terminal portion 4121 for receiving or Transmit the driving signal to the controller or other unit using the touch panel of the embodiment of the present invention. Wherein the first direction 91 and the second direction 92 can be any direction, in order to more clearly illustrate the spirit and scope of the present invention, the first direction 91 and the second direction 92 of the embodiment can be in a rectangular coordinate system X axis direction and Y axis direction, but this should not be regarded as a limitation of the present invention.

Next, referring to FIG. 4, which is a top view of an electrode layer SF according to an embodiment of the present invention, the sensing electrode layer 3 and the driving electrode layer 4 are bonded through an optical adhesive (OCA), and the driving electrode layer 4 is disposed on the sensing electrode layer 3 Below, as can be seen from the figure, the long side portion 21 or the short side portion 22 of the touch panel 1 of the embodiment of the present invention can have both the terminal portion of the sensing function and the terminal portion of the driving function, so the disclosure of the present invention is used For a touch panel, the user can choose to use the terminal portion of the long side 21 or the terminal portion of the short side 22, and its benefits and functions will be described through the embodiments presented below.

Referring to FIG. 5(a), it is a top view of the long side of the touch panel according to the embodiment of the present invention, and FIG. 5(b) is a side view of the long side of the touch panel according to the embodiment of the present invention. The user wants to design the touch panel 1 with a long curved side, for example, a large-screen display, the terminal part 3121 can be sensed by the short side of the short side 22 and the short side drive terminal 4121 of the short side 22 The first flexible circuit board 6 is electrically connected, thereby avoiding the risk that the contact angle of the first flexible circuit board 6 is broken and the touch screen display is damaged due to an excessively large bending angle when the long side is bent.

Referring to FIG. 6(a), it is a top view of the short side of the touch panel according to the embodiment of the present invention, and FIG. 6(b) is a side view of the short side of the touch panel according to the embodiment of the present invention. The user wants to design the touch panel 1 to be curved in a short side, for example, a columnar display, which can be driven by the long side sensing terminal portion 3111 of the long side 21 and the long side of the long side 21 The terminal portion 4111 is electrically connected to the second flexible circuit board 7, thereby avoiding the risk that the contact end of the second flexible circuit board 7 is broken due to an excessively large bending angle when the short side is bent, resulting in damage to the touch screen display.

Next, referring to FIG. 7, which is a schematic diagram of the stitching of a touch panel according to an embodiment of the present invention, when a user wants to pursue a larger touch panel, stitching is performed through the touch panel 1 proposed by the present invention, thereby obtaining a larger The touch panel achieves the characteristics of multiple sizes to meet the needs of customization. This embodiment discloses that by using two touch panels 1 according to the present invention, the long-side sensing terminal portion 3111 and the long-side driving terminal portion of the long-side portion 21 are connected to each other by the long-side portion 21 of the long-side portion 21 4111 is electrically connected to each other with a third flexible circuit board 8 to further obtain a larger-sized touch panel.

However, those of ordinary skill in the art should understand that this embodiment is only used to clearly illustrate the spirit and scope of the touch panel of the present invention, and should not be considered as limiting the present invention. The touch panel 1 proposed by the present invention can also be The short-side sensing terminal portion 3121 of the short-side portion 22 and the short-side driving terminal portion 4121 of the short-side portion 22 are electrically connected to each other with the third flexible circuit board 8, according to user needs, the present invention proposes The touch panel 1 can be spliced in the above manner by two or more touch panels 1 which are also proposed by the present invention, so as to achieve a more flexible and diversified screen display.

Finally, the touch panel 1 according to the present invention is further proposed, because the long-side sensing terminal portion 3111 and the long-side driving terminal portion 4111 having the long-side portion 21 and the short-side sensing at the short-side portion 22 The advantages of the terminal portion 3121 and the short-side driving terminal portion 4121, when the sensing electrode 31 or the driving electrode 41 is broken due to the sensing lead or driving lead at one end and the touch panel cannot be used normally, the corresponding other The sensing lead or the driving lead at one end enables the touch panel to operate normally. For example, referring to FIG. 8, which is a schematic diagram of a solution for damage to a touch panel wiring according to an embodiment of the present invention. As shown in the figure, when one of the long edges 21 senses that the long-edge lead 311 is damaged, the user can Correspondingly, the long-side sensing terminal portion 3111 and the short-side sensing terminal portion 3121 are connected to each other using a wire A, and the corresponding long-side sensing terminal portion 3111 and the short-side sensing are connected using the wire A The test terminal portions 3121 are electrically connected to each other, so that the corresponding sensing electrodes 31 can be used normally, and the user can still set the second flexible circuit board 7 at the long side 21 without affecting the use of the touch panel. Diversified design.

Through the above embodiments, to fully illustrate the spirit and scope of the present invention, the above is only a preferred embodiment of the present invention, and therefore the patent scope of the present invention is not limited, so all the descriptions and drawings of the present invention are used. All the simple modifications and equivalent structural changes shall be included in the patent scope of the present invention, and they shall be given together.

1: touch panel

11: protective layer

12: display layer

2: electrode layer

21: Long side

22: Short side

3: sensing electrode layer

31: sensing electrode

311: Sensing long-edge leads

3111: Long-side sensing terminal

312: Sensing short-edge leads

3121: Short-side sensing terminal

4: drive electrode layer

41: drive electrode

411: Drive long-edge leads

4111: Long-side drive terminal

412: Drive short-edge leads

4121: Short-side drive terminal

5: Transparent adhesive

6: The first flexible circuit board

7: Second flexible circuit board

8: Third flexible circuit board

91: First direction

92: Second direction

A: Wire

In order to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible, the drawings are described in detail below.

FIG. 1 is an exploded view of a touch panel according to an embodiment of the invention.

FIG. 2 is a schematic diagram of a sensing electrode layer (RX) according to an embodiment of the invention.

FIG. 3 is a schematic diagram of a driving electrode layer (TX) according to an embodiment of the invention.

FIG. 4 is a top view of an electrode layer according to an embodiment of the invention.

5(a) and FIG. 5(b) are schematic diagrams of the long side of the touch panel according to the embodiment of the invention.

FIG. 6(a) and FIG. 6(b) are schematic diagrams of short sides of a touch panel according to an embodiment of the present invention.

7 is a schematic diagram of splicing a touch panel according to an embodiment of the invention.

FIG. 8 is a schematic diagram of a solution for a broken connection of a touch panel according to an embodiment of the present invention.

1: touch panel

11: protective layer

12: display layer

2: electrode layer

3: sensing electrode layer

3111: Long-side sensing terminal

3121: Short-side sensing terminal

4: drive electrode layer

4111: Long-side drive terminal

4121: Short-side drive terminal

5: Transparent adhesive

Claims (6)

A touch panel includes: a protective layer; a display layer; and an electrode layer disposed between the protective layer and the display layer, and the edge of the electrode layer has a long side and a short side, The electrode layer includes: a sensing electrode layer (RX) having a plurality of sensing electrodes extending along a first direction and sequentially arranged in parallel along a second direction crossing the first direction; and a driving electrode A layer (TX) having a plurality of driving electrodes extending along the second direction and sequentially arranged in parallel along the first direction; wherein the sensing electrode has a sensing long-side lead extending from one end of the sensing electrode to The long side, and a sensing short side lead extends from the other end of the sensing electrode to the short side, and the driving electrode has a driving long side lead extending from one end of the driving electrode to the long side, And a driving short-side lead extending from the other end of the driving electrode to the short side, the protection layer, the display layer, and the sensing electrode layer and the driving electrode layer between the electrode layer are used between Transparent adhesive bonding, where any sensing long-side lead has a long-side sensing terminal portion at the long side, and any sensing short-side lead has a short-side sensing terminal portion at the short side , Any one of the driving long-side leads has a long-side driving terminal portion at the long side, and any driving short-side lead has a short-side driving terminal portion at the short side, the long-side sensing terminal portion, the The short-side sensing terminal part, the long-side drive terminal part or the short-side drive terminal part is used to be electrically connected to one end of a flexible circuit board. The touch panel as described in item 1 of the patent application scope, wherein the long-side sensing terminal portion, the short-side sensing terminal portion, the long-side driving terminal portion or the short-side driving terminal portion are used to communicate with a control board A flexible circuit board electrically connected. The touch panel as described in item 2 of the patent application scope, wherein the first direction is the Y-axis direction. The touch panel as described in item 3 of the patent application scope, wherein the second direction is the X-axis direction. The touch panel as described in item 4 of the patent application scope, wherein the sensing electrode transmits a sensing signal through the long-side sensing terminal portion or the short-side sensing terminal portion. The touch panel as described in item 5 of the patent application range, wherein the driving electrode transmits a driving signal through the long-side driving terminal portion or the short-side driving terminal portion.

Images