TWI578205B - Touch panel assembly and portable electronic device - Google Patents

Description

Touch panel assembly and portable electronic device

The present invention relates to a touch panel assembly and a portable electronic device, and more particularly to a capacitive touch panel assembly and a portable electronic device using the capacitive touch panel assembly.

In recent years, with the rapid development and application of information technology, wireless mobile communication and information appliances, many information products have been input devices such as traditional keyboards or mice for the purpose of being more convenient, lighter and more humanized. , changed to use a touch panel (Touch Panel) as an input device.

Currently, shortcut keys or hot keys are usually set in the peripheral area of the touch panel. Accordingly, when the user presses the hot key, the corresponding common function can be quickly turned on, thereby shortening the time required for searching and opening the function and improving the convenience of use. In addition, in order to make the button have the characteristics of light emission, a backlight module is generally disposed under the button, the backlight module has a light guide plate, and a light source is disposed on one side of the light guide plate to conduct the light emitted by the light source to the entire light guide plate. And make the button shine. However, this configuration requires an additional backlight module to increase the thickness, and Moreover, the cost of the light guide plate is relatively expensive, and the production cost is also difficult to be reduced.

The invention provides a touch panel assembly and a portable electronic device using the touch panel assembly, which have a thin overall thickness and a low production cost.

The touch panel assembly of the present invention includes a touch panel, a flexible circuit board, at least one input component, and at least one light emitting component. The touch panel includes a plurality of sensing series and a plurality of pads. The pads are disposed on the plurality of bonding areas of the touch panel and electrically connected to the corresponding sensing series, wherein the bonding area is located at one side of the touch panel. The flexible circuit board includes a plurality of laps and at least one light guiding portion. The laps extend and connect the lands respectively. Each of the lap joints includes a plurality of terminals electrically connected to the corresponding pads. The light guiding portion includes a connecting end and an extending end. The connecting end is connected to the corresponding overlapping portion, and the extending end is connected to the connecting end and extends away from the touch panel. The input member is placed directly above the extended end. The light emitting element is disposed on a light incident side of the light guiding portion and configured to emit a light. The input element is illuminated by the light entering the light guide.

The portable electronic device of the present invention includes a housing, a display module, a touch panel, a flexible circuit board structure, at least one input component, and at least one light emitting component. The housing has an opening. The host module is disposed in the housing. The display module is disposed in the housing, and the opening exposes a display surface of the display module. The touch panel is disposed on the display surface. The touch panel includes a plurality of sensing series, a plurality of pads, and a plurality of pads. The pads are disposed on the plurality of bonding areas of the touch panel and electrically connected to the corresponding sensing series, wherein the bonding area is located at one side of the touch panel. The flexible circuit board includes a plurality of laps and At least one light guiding portion. The laps extend and connect the lands respectively. Each of the lap joints includes a plurality of terminals electrically connected to the corresponding pads. The light guiding portion includes a connecting end and an extending end. The connecting end is connected to the corresponding overlapping portion, and the extending end is connected to the connecting end and extends away from the touch panel. The input member is placed directly above the extended end. The light emitting element is disposed on a light incident side of the light guiding portion and configured to emit a light to allow light to enter the light guiding portion to illuminate the input element.

In an embodiment of the invention, the touch panel further includes a plurality of connecting lines electrically connected to the corresponding sensing series to the corresponding pads.

In an embodiment of the invention, the number of the at least one input element is plural, and the input element and the joint area are staggered with each other substantially in a direction parallel to the side.

In an embodiment of the invention, the number of the at least one light guiding portion is plural, and the light guiding portions respectively overlap the plurality of orthographic projections of the input element.

In an embodiment of the invention, the number of the at least one light-emitting elements is plural, and the extended ends are respectively located on the light paths of the plurality of light rays emitted by the light-emitting elements.

In an embodiment of the invention, the flexible circuit board further includes at least one slot, and the slot surrounds the extended end to define a light guiding portion.

In an embodiment of the invention, the bonding area is located on a lower surface of the touch panel, and the flexible circuit board is disposed on the lower surface and connected to the bonding area.

In an embodiment of the invention, the touch panel assembly further includes a transparent cover covering the touch panel and the flexible circuit board. The light emitting element is disposed on a lower surface of the transparent cover.

In an embodiment of the invention, the touch panel assembly further includes a substrate, and the light emitting element is disposed on the substrate and located between the touch panel and the substrate.

In an embodiment of the invention, the flexible circuit board further includes a light guiding film covering at least an upper surface of the light guiding portion.

In an embodiment of the invention, the light guiding film has a plurality of microstructures facing a surface of the input member.

In an embodiment of the invention, the flexible circuit board further includes a substrate layer and a light guiding film, the substrate layer covering the light guiding film and having at least one opening corresponding to the extended end to expose the light guiding film at the extending end .

In an embodiment of the invention, the light guiding film has a plurality of microstructures facing a surface of the input member.

In an embodiment of the invention, the input member is disposed on the side and between any two adjacent joint regions.

In an embodiment of the invention, the touch panel further includes at least one protruding portion protruding from the side and directly above the extended end, and the input member is disposed on the protruding portion.

In an embodiment of the invention, the touch panel assembly further includes an adhesive layer disposed between the protruding portion and the extended end to adhere the protruding portion and the extending end.

The touch panel assembly of claim 1, wherein the input member is disposed on the extended end.

In an embodiment of the invention, the touch panel assembly further includes a transparent cover and an adhesive layer, and the transparent cover covers the touch panel and the flexible circuit board. The adhesive layer is disposed between the transparent cover and the extended end.

Based on the above, in the touch panel assembly of the present invention and the portable electronic device using the touch panel assembly, the flexible circuit board includes a plurality of lap portions and at least one light guiding portion, and the lap portion is connected The plurality of pads of the control panel are contacted, and the light guiding portion is located between any two adjacent overlapping portions. The light guiding portion has an extending end extending away from the touch panel, the input component is disposed directly above the light guiding portion, and the light emitting element is disposed on a light incident side of the light guiding portion to allow light to enter. Extending the end to illuminate the input elements on it. With such a configuration, the touch panel assembly of the present invention and the portable electronic device using the touch panel assembly can make the input component have a uniform backlight effect without providing a light guide plate, thereby effectively reducing the overall thickness. It can also reduce production costs.

The above described features and advantages of the invention will be apparent from the following description.

10‧‧‧Portable electronic devices

12‧‧‧ housing

12a‧‧‧ openings

14‧‧‧Display module

14a‧‧‧ Display surface

16‧‧‧Transparent cover

16a, 16b‧‧‧Light pattern

50‧‧‧Touch panel assembly

100‧‧‧Soft circuit board

110‧‧‧ lap joint

112‧‧‧terminal

112a‧‧‧first terminal

112b‧‧‧second terminal

112c‧‧‧ third terminal

120‧‧‧Light Guide

122‧‧‧Connecting end

124‧‧‧Extension

130‧‧‧Light guide film

140‧‧‧Set line department

142‧‧‧ lines

150‧‧‧ slotting

160‧‧‧Substrate layer

200‧‧‧ touch panel

210‧‧‧Sensor series

210a‧‧‧Upper block

210b‧‧‧ Lower Block

220‧‧‧ pads

222‧‧‧First mat group

222a‧‧‧first mat

224‧‧‧Second pad set

224a‧‧‧second mat

226‧‧‧3rd pad set

226a‧‧‧3rd pad

230‧‧‧Connecting line

232‧‧‧first cable

234‧‧‧second cable

236‧‧‧ third connection line

240‧‧‧protrusion

300‧‧‧Lighting elements

400‧‧‧Substrate

500‧‧‧ input components

510‧‧‧First input component

520‧‧‧Second input component

530‧‧‧ button pattern

540‧‧‧Key circuit layer

600‧‧‧Transparent cover

700‧‧‧Adhesive layer

L1, L2, L3‧‧‧ side

OP‧‧‧ openings

P1‧‧‧ light path

R1, R2, R3‧‧‧ junction area

S1‧‧‧Sensing area

FIG. 1 is a perspective view of a portable electronic device according to an embodiment of the invention.

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

3 is a partial bottom plan view of a touch panel assembly in accordance with an embodiment of the invention.

4 is a bottom plan view of the flexible circuit board of FIG. 3.

5 is a partial cross-sectional view of the touch panel assembly of FIG. 3 taken along line I-I.

6 is a partial cross-sectional view of a touch panel assembly in accordance with another embodiment of the present invention.

FIG. 7 is a top plan view of a touch panel assembly in accordance with an embodiment of the invention.

FIG. 8 is an exploded perspective view of a portion of the touch panel assembly of FIG. 7. FIG.

Figure 9 is a partial cross-sectional view of the touch panel assembly of Figure 7 taken along line A-A'.

Figure 10 is a partial cross-sectional view of the touch panel assembly of Figure 7 taken along line B-B'.

FIG. 11 is a top plan view of a touch panel assembly in accordance with an embodiment of the invention.

12 is an exploded perspective view of a portion of the touch panel assembly of FIG. 11.

FIG. 13 is a partially enlarged schematic view of the touch panel assembly of FIG. 11. FIG.

Figure 14 is a partial cross-sectional view of the touch panel assembly of Figure 11 taken along line A-A'.

Figure 15 is a partial cross-sectional view of the touch panel assembly of Figure 11 taken along line B-B'.

FIG. 1 is a perspective view of a portable electronic device according to an embodiment of the invention. 2 is a schematic diagram of a touch panel according to an embodiment of the invention. 3 is a partial bottom plan view of a touch panel assembly in accordance with an embodiment of the invention. Referring to FIG. 1 to FIG. 3, the portable electronic device 10 of the present embodiment can be a smart phone as shown in FIG. 1. Of course, this embodiment is only for exemplification, and other implementations. In the example, the portable electronic device of the present invention The 10 can also be a portable electronic device with a touch function such as a tablet PC or an eBook. Referring to FIG. 1 to FIG. 3 , the portable electronic device 10 of the present embodiment includes a housing 12 , a display module 14 , a transparent cover 16 , a flexible circuit board 100 , and a touch panel 200 . The housing 12 has an opening 12a as shown in FIG. The display module 14 is disposed in the housing 12, and the opening 12a exposes a display surface 14a of the display module 14. The touch panel 100 can be disposed on the display surface 14a, and the flexible circuit board 100 is adapted to be flexibly connected to electrically connect the touch panel 200 and a host module of the portable electronic device 10. The transparent cover 16 is disposed on the touch panel 200 and covers the opening 12 a of the housing 12 . The transparent cover 16 has at least one transparent pattern 16a, and the transparent pattern can be used as a button pattern of the portable electronic device 10.

The touch panel assembly 50 of the present embodiment includes a flexible circuit board 100, a touch panel 200, an input component 500, and at least one light emitting component 300. The touch panel 200 includes a plurality of sensing series 210 , a plurality of pads 220 , and a plurality of connecting lines 230 . The sensing series 210 is disposed in a sensing area S1 of the touch panel 200. The pads 220 are disposed outside the sensing area S1 and electrically connected to the corresponding sensing series 210 through the connecting lines 230, respectively. In this way, when the user touches the touch panel 200 with a finger, the touch panel 200 generates a capacitance change between the sensing series at a position touched by the finger, and the change in the capacitance is converted into a control signal. It is transferred to an external circuit and processed to output an appropriate command to operate the portable electronic device 10.

In detail, referring to FIG. 2 , the pad 220 may include a first pad set 222 , a plurality of second pad sets 224 , and a plurality of third pad sets 226 , wherein the first pad set includes multiple a pad 222a, the second pad set 224 includes a plurality of second pads 224a, the third pad group 226 includes a plurality of third pads 226a, and the first pad group 222, the plurality of second pad groups 224, and the plurality of third pad groups 226 are respectively disposed on the touch A plurality of junction regions R1, R2, R3 of the panel 200. The land R1, R2, R3 are located on one side L1 of the sensing area S1.

In the above, the connection line 230 can include a plurality of first connection lines 232, a plurality of second connection lines 234, and a plurality of third connection lines 236. The first connection lines 232 are disposed on the side edge L2 of the touch panel 200. The sensing series 210 in the lower block 210b of the touch panel 200 is electrically connected to the corresponding first pad 222a, and the second connecting line 234 is disposed on the side L3 of the touch panel 200. The sensing series 210 located in the upper block 210a of the touch panel 200 is electrically connected to the corresponding second pad 224a. Thus, in this embodiment, the sensing series 210 is divided into two blocks 210a and 210b, and connected to the corresponding pads 222a and 224a through the connecting lines 232 and 234 located at the two sides L2 and L3, respectively, thereby saving connection. The wiring spaces of the lines 232, 234 on the touch panel 200. Thereby, the size of the touch panel 200 is reduced, and the peripheral frame of the portable electronic device 10 is reduced, thereby increasing the display area of the portable electronic device 10. Similarly, the third connecting line 236 is disposed on the side L1 of the touch panel 200 to electrically connect the sensing series 210 on the side L1 to the corresponding third pad 226a.

In the present embodiment, the input member 500 can be disposed, for example, on the side L1 of the sensing region S1 and between any two adjacent bonding regions R1, R2, R3, and the input member 500 and the bonding regions R1, R2 R3 is staggered with each other in a direction parallel to the side edge L1. The input component 500 can be, for example, a physical key, a light sensitive key, and a stress sensing disposed on the portable electronic device 10. The present invention does not limit the type of the input element 500 and the method of generating the control signal by a key (strength sensitive key) or the like. In this embodiment, input element 500 can be a physical button. This input element 500 is different from the virtual key displayed by the display. In particular, input component 500 can include a first input component 510 and a second input component 520. The first input element 510 and the second input element 520 are respectively located directly below the first transparent pattern 16a and the second transparent pattern 16b as shown in FIG. 1, and the first input element 510 and the second input element 520 are respectively respectively There are different functions, such as returning to the previous page or returning to the main screen function. It should be noted that the number of the input elements 500 of the present embodiment is plural, but the embodiment is merely for illustration, and the present invention does not limit the number of the input elements 500.

4 is a bottom plan view of the flexible circuit board of FIG. 3. 5 is a partial cross-sectional view of the touch panel assembly of FIG. 3 taken along line I-I. Referring to FIG. 3 to FIG. 5 simultaneously, in the embodiment, the flexible circuit board 100 includes a plurality of overlapping portions 110 and at least one light guiding portion 120 as shown in FIGS. 3 and 4 . The laps 110 extend and are connected to the lands R1, R2, R3 as shown in FIG. 2, respectively. Each of the laps 110 includes a plurality of terminals 112 as shown in FIG. 4, and is electrically connected to the corresponding pads 220, respectively. In detail, each of the laps 110 includes a plurality of first terminals 112a, a plurality of second terminals 112b, and a plurality of third terminals 112c. The first terminals 112a are electrically connected to the plurality of first pads 222, respectively. The first pads 222a, the second terminals 112b are electrically connected to the plurality of second pads 224a of the second pad group 224, and the third terminals 112c are electrically connected to the plurality of third pads 226, respectively. The third pad 226a. In this embodiment, the flexible circuit board 100 is disposed on the lower surface of the touch panel 200, and the bonding area of the touch panel 200 R1, R2, and R3 are respectively disposed on the lower surface of the touch panel 200 such that the pads 220 in the bonding regions R1, R2, and R3 are electrically connected to the terminals 112 of the overlapping portion 110, respectively. In this configuration, the touch panel 200 of FIG. 2 presents the elements disposed on the lower surface thereof in a see-through manner.

In addition, the flexible circuit board 100 further includes a line portion 140 and a plurality of lines 142. The line portions 140 are respectively connected to the lap portion 110 and extend to the outside of the touch panel 200. The plurality of lines 142 are respectively connected to the The one terminal 112a, the second terminal 112b, and the third terminal 112c are collected in the hub portion 140 to be electrically connected to a host module of the portable electronic device 10 via the hub portion 140.

In this embodiment, the light guiding portion 120 includes a connecting end 122 and an extending end 124 connected to each other as shown in FIG. The connecting end 122 is connected to the corresponding overlapping portion 110, and the extending end 124 faces the light emitting element 300 and extends away from the touch panel 200 as shown in FIG. 5, and the input member 500 is located directly above the extended end 124. In this embodiment, the number of the light guiding portions 120 may be plural (illustrated as two, but not limited thereto) corresponding to the number of the input elements 500, and the light guiding portion 120 and the input member 500 are respectively positive. The projections overlap. Specifically, the plurality of light guiding units 120 are located directly below the plurality of input elements 500 described above. In this embodiment, the flexible circuit board 100 further includes at least one slot 150 (illustrated as two, but not limited thereto), and the slots 150 respectively surround the extending end 124 to be on the flexible circuit board as shown in FIG. A corresponding light guiding portion 120 is defined on 100.

In the embodiment, the flexible circuit board 100 further includes a light guiding film 130 covering at least one upper surface of the light guiding portion 120. For example, the light guiding film 130 can be taken The uppermost dielectric layer of the flexible circuit board 100 is used to cover the upper surface of the flexible circuit board 100 in a comprehensive manner. Of course, this embodiment is for illustrative purposes only, and the present invention is not limited thereto. In other embodiments, the light guiding film 130 may also cover only the upper surface of the light guiding portion 120. The light emitting element 300 is disposed on a light incident side of the light guiding portion 120. Specifically, the light emitting device 300 can be disposed on a substrate 400 as shown in FIG. 5 , and the light emitting device 300 is located between the touch panel 200 and the substrate 400 . Light-emitting element 300 is configured to emit a light (shown in phantom in Figure 5). The extended end 124 is located on a light path P1 of the light to cause light to enter the light directing film 130 on the extended end 124 to illuminate the input element 500 above it. In the present embodiment, the number of the light-emitting elements 300 may be plural according to the number of the light guiding portions 120, and the extending ends 124 of the light guiding portions 120 are respectively located on the light path P1 of the light emitted by the light-emitting elements 300.

The light guiding film 130 of the embodiment may be a transparent film having a high refractive index and a light transmittance, and the surface of the light guiding film 130 may have a plurality of dot-like microstructures. Therefore, the light guiding film 130 can utilize the difference in refractive index of the light between the mediums to cause a total reflection phenomenon in the light guiding film 130, and guide the light to be emitted from the surface facing the input member 500 by the dot-like microstructure. The input element 500 is illuminated. With this configuration, the input member 500 can be made to have a uniform backlight without additionally providing a light guide plate.

6 is a partial cross-sectional view of a touch panel assembly in accordance with another embodiment of the present invention. It should be noted that the touch panel assembly of the present embodiment is similar to the touch panel assembly of FIG. 5. Therefore, the present embodiment uses the component numbers and parts of the foregoing embodiments, wherein the same reference numerals are used. The same or similar components, The description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiment, and the description is not repeated herein. Referring to FIG. 6 , the difference between the touch panel assembly of the embodiment and the touch panel assembly of FIG. 5 will be described below.

In this embodiment, the touch panel assembly further includes a transparent cover 600 covering the flexible circuit board 100 and the touch panel 200. The light emitting element 300 is disposed on the lower surface of the transparent cover 600. The extended end 124 faces the light-emitting element 300 and is located on the light path P1 of the light emitted by the light-emitting element 300. As such, light emitted by the illuminating element 300 can enter the light directing film 130 on the extended end 124 to illuminate the input element 500.

FIG. 7 is a top plan view of a touch panel assembly in accordance with an embodiment of the invention. It should be noted that the touch panel assembly of the present embodiment is similar to the touch panel assembly of FIG. 6. Therefore, the present embodiment uses the component numbers and parts of the foregoing embodiments, wherein the same reference numerals are used. The same or similar elements, and the description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiment, and the description is not repeated herein. The difference between the touch panel assembly of the present embodiment and the touch panel assembly of FIG. 6 will be described below.

FIG. 8 is an exploded perspective view of a portion of the touch panel assembly of FIG. 7. FIG. It should be noted that, in order to simplify the drawing, the circuit layout on the touch panel 200 of FIGS. 7 and 8 is only shown in a simplified diagram, and FIG. 8 omits the transparent cover 600. Referring to FIG. 7 and FIG. 8 , in the embodiment, the touch panel 200 further includes at least one protruding portion 240 protruding from the side of the touch panel 200 and located at the extended end 124 of the flexible circuit board 100 . Above, the input member 500 is disposed on the projection 240. In other words It is said that the orthographic projection of the protruding portion 240 overlaps with the extended end 124 of the flexible circuit board 100, and the input member 500 is disposed on the protruding portion 240. In this embodiment, the protruding portion 240 can protrude from an edge of the touch panel 200 as shown in FIG. 8 without being aligned with the bonding regions R1, R2, and R3.

Figure 9 is a partial cross-sectional view of the touch panel assembly of Figure 7 taken along line A-A'. Figure 10 is a partial cross-sectional view of the touch panel assembly of Figure 7 taken along line B-B'. Referring to FIG. 9 and FIG. 10, in the embodiment, the touch panel assembly 50 further includes a transparent cover 600 covering the touch panel 200 and the flexible circuit board 100, and the light-emitting component 300 is disposed on the transparent cover. The lower surface of the 600. Further, the flexible circuit board 100 further includes a substrate layer 160 and a light guiding film 130 as shown in FIG. 10 , wherein the substrate layer 160 covers the light guiding film 130 , and the substrate layer 160 has a corresponding extending end 124 . At least one opening OP to expose the light guiding film 130 at the extended end 124. As such, the protrusion 240 provided with the input member 500 can extend over the extended end 124 via the opening OP, and the surface of the light guiding film 130 can have a plurality of microstructures 132, so that the light entering the light guiding film 130 can be caused by The microstructures 132 create a diffusion or reflection that causes light to exit from the surface facing the input member 500 to illuminate the input member 500.

In this configuration, the light-emitting element 300 can be disposed on the flexible circuit board 100 facing the extended end 124 and disposed on the transparent cover 600 via the flexible circuit board 100. In this manner, the light-emitting element 300 can be disposed on the light-incident side of the light-guiding portion 120 as shown in FIG. 9 , and the light emitted by the light-emitting element 300 can enter the light-guiding film 130 via the light-incident side and pass through the microstructure 132. Light is emitted by the surface facing the input member 500 to illuminate the input member 500 located directly above. Further, in this embodiment, the touch The control panel assembly 50 further includes an adhesive layer 700 disposed between the protruding portion 240 and the extending end 124 as shown in FIG. 10 to bond the protruding portion 240 and the extending end 124.

FIG. 11 is a top plan view of a touch panel assembly in accordance with an embodiment of the invention. It should be noted that the touch panel assembly of the present embodiment is similar to the touch panel assembly of FIG. 5. Therefore, the present embodiment uses the component numbers and parts of the foregoing embodiments, wherein the same reference numerals are used. The same or similar elements, and the description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiment, and the description is not repeated herein. The difference between the touch panel assembly of the present embodiment and the touch panel assembly of FIG. 5 will be described below.

12 is an exploded perspective view of a portion of the touch panel assembly of FIG. 11. FIG. 13 is a partially enlarged schematic view of the touch panel assembly of FIG. 11. FIG. It should be noted that, in order to simplify the drawing, the circuit layout on the touch panel 200 of FIGS. 11 and 12 is only shown in a simplified diagram, and the transparent cover 600 is omitted in FIG. Referring to FIG. 11 to FIG. 13 simultaneously, in the embodiment, the input component 500 is disposed on the extended end 124 of the flexible circuit board 100. In detail, the flexible circuit board 100 can be similar to the previous embodiment, including a substrate layer 160 and a light guiding film 130, wherein the substrate layer 160 covers the light guiding film 130, and the substrate layer 160 has a corresponding extending end 124. At least one opening OP to expose the light guiding film 130 at the extended end 124. In this embodiment, the input component 500 can include a button pattern 530 and a button circuit layer 540. The button pattern 520 can be disposed on the light emitting surface of the light guiding film 130. The key circuit layer 540 can surround the button pattern 520 and be located on the substrate layer. 160 and between the light guiding film 130. Of course, this embodiment is for illustrative purposes only, and the present invention does not limit the structure and circuit configuration of the input component 500. and, The light guiding film 130 may have a plurality of microstructures 132 such that light entering the light guiding film 130 may be diffused or reflected by the microstructures 132, thereby causing light to be emitted from the surface facing the input element 500 to perform input on the input element 500. illumination.

Figure 14 is a partial cross-sectional view of the touch panel assembly of Figure 11 taken along line A-A'. Figure 15 is a partial cross-sectional view of the touch panel assembly of Figure 11 taken along line B-B'. Referring to FIG. 14 and FIG. 15 , in the embodiment, the touch panel assembly further includes a transparent cover 600 and an adhesive layer 700 . The transparent cover 600 covers the touch panel 200 and the flexible circuit board 100 . The adhesive layer 700 is disposed between the transparent cover 600 and the extended end 124. In detail, since the substrate layer 160 of the flexible circuit board 100 has the opening OP corresponding to the extending end 124 to expose the underlying light guiding film 130, the adhesive layer 700 can be filled in the opening OP to adhere the transparent cover 600. And extending end 124. In this configuration, the light-emitting element 300 can be disposed on the flexible circuit board 100 facing the extended end 124 and disposed on the transparent cover 600 via the flexible circuit board 100. In this manner, the light-emitting element 300 can be disposed on the light-incident side of the light-guiding film 130 as shown in FIG. 14 , and the light emitted by the light-emitting element 300 can enter the light-guiding film 130 via the light-incident side and pass through the microstructure 132. Light is emitted by the surface facing the input member 500 to illuminate the input member 500 located directly above.

In summary, in the touch panel assembly and the portable electronic device of the present invention, the flexible circuit board includes a plurality of overlapping portions and at least one light guiding portion, and the overlapping portion is configured to connect the plurality of touch panels. The pad is located between the two adjacent laps. In addition, the light guiding portion has an extending end extending away from the touch panel and directly under the input component, and the light emitting component is disposed on a light incident side of the light guiding portion to Light is directed into the extended end of the light guide and light is emitted from the extended end facing the surface of the input member to illuminate the input member. With such a configuration, the touch panel assembly of the present invention and the portable electronic device using the touch panel assembly can make the input component have a uniform backlight effect without providing a light guide plate, thereby effectively reducing the overall thickness. It can also reduce production costs.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Soft circuit board

122‧‧‧Connecting end

124‧‧‧Extension

130‧‧‧Light guide film

200‧‧‧ touch panel

240‧‧‧protrusion

300‧‧‧Lighting elements

400‧‧‧Substrate

P1‧‧‧ light path

Claims (19)

A touch panel assembly includes: a touch panel comprising: a plurality of sensing series; and a plurality of pads disposed on the plurality of bonding areas of the touch panel and electrically connected to the respective sensing strings The splicing portion includes a plurality of lap portions extending and connecting the lands, each of the lap portions including a plurality of terminals, respectively Electrically connecting the corresponding pads; and at least one light guiding portion includes a connecting end and an extending end, the connecting end is connected to the corresponding overlapping portion, the extending end is connected to the connecting end and away from the touch panel a direction extending; at least one input component disposed directly above the extended end; and at least one light emitting component disposed on a light incident side of the light guide and configured to emit a light to cause the light to enter the light guide The input element is illuminated. The touch panel assembly of claim 1, wherein the touch panel further comprises a plurality of connecting lines electrically connecting the corresponding sensing series to the corresponding pads. The touch panel assembly of claim 1, wherein the number of the at least one input component is plural, and the input components and the bonding regions are substantially staggered with each other in a direction parallel to the side edges. . The touch panel assembly of claim 3, wherein the number of the at least one light guiding portion is plural, and the light guiding portions respectively overlap the plurality of orthographic projections of the input elements. The touch panel assembly of claim 4, wherein the number of the at least one light-emitting elements is plural, and the extended ends are respectively located on the light paths of the plurality of light rays emitted by the light-emitting elements. The touch panel assembly of claim 1, wherein the flexible circuit board further comprises at least one slot, the slot surrounding the extending end to define the light guiding portion. The touch panel assembly of claim 1, wherein the bonding regions are located on a lower surface of the touch panel, and the flexible circuit board is disposed on the lower surface and connects the bonding regions. The touch panel assembly of claim 1, further comprising a transparent cover covering the touch panel and the flexible circuit board, wherein the light emitting element is disposed on a lower surface of the transparent cover. The touch panel assembly of claim 1, further comprising a substrate disposed on the substrate and located between the touch panel and the substrate. The touch panel assembly of claim 1, wherein the flexible circuit board further comprises a light guiding film covering at least an upper surface of the light guiding portion. The touch panel assembly of claim 10, wherein the light guiding film has a plurality of microstructures. The touch panel assembly of claim 1, wherein the flexible circuit board further comprises a substrate layer and a light guiding film, the substrate layer covering the light guiding film and having at least one corresponding to the extending end Opening to expose the light guiding film at the extended end. The touch panel assembly of claim 12, wherein the light guiding film has a plurality of microstructures. The touch panel assembly of claim 1, wherein the input member is disposed on the side and between any two adjacent joint regions. The touch panel assembly of claim 1, wherein the touch panel further includes at least one protrusion protruding from the side and directly above the extending end, and the input component is disposed on the On the bulge. The touch panel assembly of claim 15 further comprising an adhesive layer disposed between the protruding portion and the extending end to adhere the protruding portion and the extending end. The touch panel assembly of claim 1, wherein the input member is disposed on the extended end. The touch panel assembly of claim 17, further comprising a transparent cover and an adhesive layer covering the touch panel and the flexible circuit board, wherein the adhesive layer is disposed on the transparent cover Between the plate and the extended end. A portable electronic device includes: a housing having an opening; A display module is disposed in the housing, and the opening is exposed to a display surface of the display module; and the touch panel assembly according to claim 1, wherein the touch panel is configured The display surface.