TW202032337A - 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 a design of a touch panel.

Despite the current technological development, the quality of touch devices has been continuously improved. From flat touch displays in the past to curved touch displays, curved touch displays are particularly flexible in use due to their flexibility. It has attracted much attention, and its application range is wider than that of flat touch displays. However, for user needs, the curved touch display can be designed to be curved on the short side as a cylindrical display, or can be designed to be curved on the long side as a spacious large-scale display. Because the screen itself has a curvature, the user can 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 to be curved in the panel design, and the wiring 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 are often highly customized, and different bending methods require different designs. If the bending is too large, it will easily cause the risk of rupture of the terminals electrically connected to the flexible circuit board on the side. The terminal part electrically connected to the flexible circuit board is at risk of rupture due to bending, and with the current high degree of customization requirements, a panel design with ultra-high flexibility is urgently needed. Therefore, in order to solve the above-mentioned conventional problems and deficiencies, it is the path that the inventor of the present invention and related manufacturers engaged in this industry urgently want to study and improve.

Therefore, in view of the above-mentioned deficiencies, the inventor of the present invention collected relevant information, evaluated and considered from multiple parties, and based on years of experience in this industry, through continuous trials and modifications, he designed this invention patent.

The object of the present invention is to provide a touch panel, which includes 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: a sensing electrode layer (RX) with a plurality of sensing electrodes extending along a first direction and arranged in parallel in a second direction intersecting the first direction, and a plurality of driving electrodes along Drive electrode layers (TX) extending in the second direction and arranged in parallel along the first direction.

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

Further, the protective layer, the display layer, and the sensing electrode layer and the driving electrode layer between the electrode layers can be bonded together using a transparent adhesive, such as 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 drive long-side lead has a long-side drive terminal portion at the long side, and the drive short-side lead has a short-side drive terminal portion at the short side.

Further, 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 for electrically connecting with one end of the flexible circuit board or with 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 are drawn to illustrate the characteristics and functions of the preferred embodiments of the present invention in detail. The size of the coating and the range can be exaggerated, so as to fully understand it, but should It is understood that such content is not enough to limit the invention.

1 is an exploded view of a touch panel according to an embodiment of the present invention. In the figure, 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. The edge 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 a portion disposed on the sensing electrode layer 3 A lower 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 on 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 together with a transparent adhesive 5, such as optical adhesive (OCA).

2 is a schematic diagram of a sensing electrode layer RX according to an embodiment of the present invention. It can be seen from the figure that 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. Any one of the sensing electrodes 31 has a long sensing lead 311 extending from one end of the sensing electrode 31 to the long side 21, and a sensing short lead 312 extending from the other end of the sensing electrode 31 Extending to the short side 22, referring to the figure, the right end of any sensing electrode 31 is the sensing long side lead 311, and the left end of any sensing electrode 31 is the sensing short side铅312. From the figure, any one of the long-side sensing leads 311 has a long-side sensing terminal portion 3111 at the long side 21, and any one of the sensing short-side leads 312 has a short side at the short side 22. Sensing terminal part 3121.

In summary, any one of the sensing electrodes 31 can be electrically connected to a first flexible circuit board 6 or other 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 units using the touch panel of the embodiment of the present invention.

3, which is a schematic diagram of a driving electrode layer TX according to an embodiment of the present invention. It can be seen from the figure that the driving electrode layer 4 includes a plurality of driving electrodes 41 extending along the second direction 92, and a plurality of driving electrodes 41 are The first direction 91 crossing the second direction 92 is arranged in parallel in sequence. Any 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 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 driving electrode 41 is the driving long-side lead 411, and the upper end of any driving electrode 41 is the driving short-side lead 412. From 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 driving electrodes 41 can be electrically connected to a second flexible circuit board 7 or other wires or leads with transmission properties through the long-side driving terminal portion 4111 or the short-side driving terminal portion 4121 for receiving or The driving signal is transmitted to the controller or other units using the touch panel of the embodiment of the present invention. 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. The X-axis direction and Y-axis direction of, but this should not be regarded as a limitation of the present invention.

4, which is a top view of the electrode layer SF according to the embodiment of the present invention. The sensing electrode layer 3 and the driving electrode layer 4 are bonded through optical adhesive (OCA), and the driving electrode layer 4 is disposed on the sensing electrode layer 3. Below, it can be seen from the figure that the long side 21 or the short side 22 of the touch panel 1 of the embodiment of the present invention can have both a sensing function terminal part and a driving function terminal part, so the present invention discloses With the touch panel, the user can choose to use the terminal part at the long side 21 or the terminal part at the short side 22. The benefits and functions of the touch panel will be described in the following embodiments.

Referring to FIG. 5(a), it is a top view of the long side of the touch panel in an embodiment of the present invention, and FIG. 5(b) is a side view of the long side of the touch panel in an embodiment of the present invention. The user wants to design the touch panel 1 in a long-side curved form, such as a large-screen display, by using the short-side sensing terminal portion 3121 at the short side 22 and the short-side driving terminal portion 4121 at the short side 22 It is electrically connected to the first flexible circuit board 6 to avoid the risk of damage to the touch screen display due to the excessive bending angle when the long side is bent, causing the contact end of the first flexible circuit board 6 to break.

Referring to FIG. 6(a), it is a top view of a touch panel with a curved short side in an embodiment of the present invention, and FIG. 6(b) is a side view of a touch panel with a curved short side in an embodiment of the present invention. The user wants to design the touch panel 1 into a short-side curved form, such as a columnar display, which can be driven by the long-side sensing terminal portion 3111 at the long side 21 and the long side at 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 the excessive bending angle when the short side is bent, and the touch screen display is damaged.

Next, referring to FIG. 7, which is a schematic diagram of the splicing of the touch panel according to the embodiment of the present invention. When the user wants to pursue a larger touch panel, the touch panel 1 proposed by the present invention is spliced to obtain a larger size. The touch panel achieves the characteristics of multiple sizes to meet the needs of customization. This embodiment discloses that by combining the two touch panels 1 proposed by the present invention, the long-side sensing terminal portion 3111 at the long side 21 and the long-side driving terminal portion at the long side 21 of each other The 4111 is electrically connected to each other with a third flexible circuit board 8, which can further obtain a larger size touch panel.

Of course, those with ordinary knowledge 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 regarded as limiting the present invention. The touch panel 1 proposed by the present invention can also be passed through The short-side sensing terminal portion 3121 at the short side 22 and the short-side driving terminal portion 4121 at the short side 22 are electrically connected to each other by the third flexible circuit board 8. In response to user needs, the present invention proposes The touch panel 1 can be spliced with two or more touch panels 1 that are also proposed in the present invention by the above method, so as to achieve a more flexible and diversified screen display.

Finally, the touch panel 1 proposed by the present invention is further proposed, because it has the long-side sensing terminal portion 3111 and the long-side driving terminal portion 4111 at the long side 21 at the same time, and the short-side sensing terminal at the short side 22 The advantage of the terminal portion 3121 and the short-side driving terminal portion 4121 is that when the sensing electrode 31 or the driving electrode 41 cannot be used normally due to the break of the sensing lead or the driving lead at one end, the corresponding additional The sensing lead or the driving lead at one end makes the touch panel operate normally. For example, referring to FIG. 8, which is a schematic diagram of a solution for pin damage of a touch panel according to an embodiment of the present invention. As shown in the figure, when one of the long side 21 of the sensing long side 311 is damaged, the user can The corresponding long-side sensing terminal portion 3111 and the short-side sensing terminal portion 3121 are connected to each other by a wire A, and the corresponding long-side sensing terminal portion 3111 and the short-side sensing terminal portion 3111 are connected to each other by 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 install the second flexible circuit board 7 on the long side 21 without affecting the use and use of the touch panel. Diversified design.

The above embodiments are used to fully illustrate the spirit and scope of the present invention. The above descriptions are only the preferred embodiments of the present invention. Therefore, the scope of patents of the present invention is not restricted. All simple modifications and equivalent structural changes should be included in the scope of the patent of the present invention for the same reason, and shall be stated.

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: Sense long side lead

3111: Long-side sensing terminal

312: Sense short-side lead

3121: Short-side sensing terminal

4: drive electrode layer

41: drive electrode

411: drive long side leads

4111 Long-side drive terminal

412: drive short side lead

4121: Short-side drive terminal

5: Transparent adhesive

6: The first flexible circuit board

7: The second flexible circuit board

8: The 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, detailed descriptions of the accompanying drawings are as follows.

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 present invention.

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

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

5(a) and 5(b) are schematic diagrams of the long sides of the touch panel being bent according to an embodiment of the present invention.

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

FIG. 7 is a schematic diagram of splicing touch panels according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of a solution for pin damage 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 (10)

A touch panel, comprising: a protective layer; a display layer; and an electrode layer arranged 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 Layer (TX), with a plurality of driving electrodes extending along the second direction and 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 short-side sensing lead extend from the other end of the sensing electrode to the short side, and the driving electrode has a long-side driving lead extending from one end of the driving electrode to the long side, And a driving short side lead extends from the other end of the driving electrode to the short side. The touch panel according to the first item of the scope of patent application, wherein the protective layer, the display layer, and the sensing electrode layer and the driving electrode layer between the electrode layers are pasted with a transparent adhesive Together. As for the touch panel described in item 2 of the scope of patent application, any long-side sensing lead has a long-side sensing terminal portion at the long side, and any short-side sensing lead has a long-side sensing terminal at the short side A short-side sensing terminal part. As for the touch panel described in item 3 of the scope of patent application, any one of the driving long-side leads has a long-side driving terminal portion at the long side, and any one of the driving short-side leads has a short side at the short side Drive terminal part. The touch panel according to claim 4, 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 is used for connecting to a flexible circuit One end of the board is electrically connected. The touch panel according to claim 4, 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 is used for connecting to a control board A flexible circuit board is electrically connected. As for the touch panel described in claim 6, wherein the first direction is the Y-axis direction. As for the touch panel described in claim 7, wherein the second direction is the X-axis direction. In the touch panel described in claim 8, wherein the sensing electrode transmits a sensing signal through the long-side sensing terminal portion or the short-side sensing terminal portion. In the touch panel described in claim 9, wherein the driving electrode transmits a driving signal through the long-side driving terminal portion or the short-side driving terminal portion.

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