TW201447675A - Electronic device with touching function - Google Patents

Abstract

An electronic device with touching function includes a protecting cover and a display panel. The protecting cover includes a touching surface. The touching surface includes a displaying area and a button area apart with the displaying area. The display panel includes an optical substrate, a touching layer is formed on the optical substrate with circuit. The display panel is positioned below the protecting cover. The optical substrate extends from the displaying area to the button area. The touching layer is configured for sensing a touch on the displaying area and the button area.

Description

Electronic device with touch function

The present invention relates to an electronic device, and more particularly to an electronic device having a touch function.

The prior electronic device with touch control function generally includes a protective cover, a touch screen, a display panel and a flexible circuit board. The protective cover includes a touch surface and a back surface opposite to the touch surface. The touch surface includes a display area and a button area. The touch screen is disposed on the back surface and aligned with the display area, and the flexible circuit board is disposed on the back surface and aligned with the button area. The display panel is disposed below the touch screen. Since the button area of the protective cover needs to additionally set the flexible circuit board to obtain the touch signal of the button area, the assembly process of the electronic device is relatively complicated, and the production efficiency is reduced.

In view of this, it is necessary to provide an electronic device that improves production efficiency.

An electronic device with a touch function includes a protective cover and a display panel. The protective cover includes a touch surface, and the touch surface includes a display area and a button area separated from the display area. The display panel includes an optical substrate on which an electrical circuit is disposed to form a touch layer. The display panel is located below the protective cover, and the optical substrate extends from the display area of the protective cover to the button area. The touch layer senses touch on the button area and the display area.

Compared with the prior art, the electronic device with touch function provided by the present invention forms a circuit on the optical substrate of the display panel to form a touch layer, and extends the optical substrate to the button area of the protection cover, thereby making the touch The control layer can directly sense the touch on the button area without additionally providing a flexible circuit board, thereby facilitating the assembly of the electronic device.

100. . . Electronic device

10. . . protection cap

11. . . Touch surface

111. . . Display area

112. . . Marginal zone

1121. . . Button area

1122. . . Button identifier

12. . . back

13. . . front end

14. . . rear end

20. . . Display panel

twenty one. . . Optical substrate

211. . . Upper surface

212. . . lower surface

213. . . Touch layer

twenty two. . . TFT substrate

twenty three. . . Backlight module

30. . . Light source module

40. . . Circuit board

50. . . Optical glue

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

2 is a cross-sectional view of the electronic device of FIG. 1.

As shown in FIG. 1-2, an electronic device 100 with a touch function includes a protective cover 10, a display panel 20, a light source module 30, a circuit board 40, and an optical adhesive. 50. In this embodiment, the electronic device 100 is a mobile phone.

The protective cover 10 is a transparent protective glass, and includes a touch surface 11 and a back surface 12 opposite to the touch surface 11 . The touch surface 11 includes a display area 111 and an edge area 112 surrounding the display area 111. The protective cover 10 has a front end 13 and a rear end 14 opposite the front end 13. The display area 111 is located at an intermediate position between the front end 13 and the rear end 14. The edge region 112 includes a button region 1121, and the button region 1121 is adjacent to the rear end 14. The button area 1121 is provided with a plurality of button identifiers 1122, such as a return button, a home button, and the like. One side of the edge region 12 is coated with a light-blocking ink, and the button logo 1122 transmits light.

The display panel 20 is located on the back surface 12 of the protective cover 10 and includes an optical substrate 21 , a TFT (Thin Film Transistor) substrate 22 , and a backlight module 23 . The optical substrate 21 includes an upper surface 211 and a lower surface 212 opposite to the upper surface 211. A circuit is disposed on the upper surface 211 to form a touch layer 213. The optical substrate 21 extends from the display area 111 of the protective cover 10 to the button area 1121. In the present embodiment, the optical substrate 21 is a color filter. It can be understood that the optical substrate 21 can also be a polarizing plate, a glass substrate or other optical components. The TFT substrate 22 is disposed between the optical substrate 21 and the backlight module 23. The TFT substrate 22 and the backlight module 23 cover the display area 111 without being in contact with the button area 1121. The backlight module 23 is configured to supply light to the TFT substrate 22, and the TFT substrate 22 is configured to transmit light to form an image. In this embodiment, the size of the TFT substrate 22 is slightly larger than the size of the display area 111, and the size of the optical substrate 21 is larger than the size of the TFT substrate 22.

In this embodiment, the touch layer 213 is a capacitive touch layer. When the user touches any area above the touch layer 213, the capacitance at the corresponding contact position on the touch layer 213 changes, so that the frequency of the oscillator connected thereto changes. The frequency change can determine the touch location to obtain information.

The light source module 30 is located on a side of the TFT substrate 22 adjacent to the button region 1121 and directly below the optical substrate 21 of the button region 1121. The light source module 30 faces the button area 1121 for providing light to the button area 1121. The light is transmitted from the button identifier 1122.

It can be understood that, in order to prevent the light emitted by the light source module 30 from being transmitted from the display area 111 and the light emitted by the backlight module 23 from being transmitted from the button identifier 1122, the backlight module 23 and the A spacer (not shown) is disposed between the light source modules 30.

The circuit board 40 is located below the display panel 20 , and the touch layer 213 , the display panel 20 , and the light source module 30 are electrically connected to the circuit board 40 . It will be appreciated that the circuit board 40 includes a controller. The controller controls the display panel 20 and the light source module 30 according to the touch signal sensed by the touch layer 213.

The optical glue 50 is coated on the back side 12 of the protective cover 10 during assembly. Then, the display panel 20 is directly bonded to the protective cover 10, and the optical substrate 21 is completely in contact with the display area 111 and the button area 1121. The light source module 30 is electrically connected to the circuit board 40, and the circuit board 40 is fixed under the display panel 20, so that the light source module 30 faces the button area 1121. And electrically connecting the display panel 20 to the circuit board 40.

In the process of using, when the user touches the display area 111 or the button mark 1122 of the button area 1121, the touch layer 213 formed on the optical substrate 21 can sense the user's touch. And controlling the display panel 20 to display different images according to the touch signals generated by the touch layer 213. In addition, when the user touches the button identifier 1122, the circuit board 40 turns on the light source module 30 according to the touch signal generated by the touch layer 213 to illuminate the button identifier 1122.

The electronic device provided by the present invention forms a circuit on the optical substrate of the display panel to form a touch layer, and extends the optical substrate to the button area of the protection cover, so that the touch layer can directly sense the touch on the button area. Control, without the need to additionally set up a flexible circuit board, which facilitates the assembly of electronic devices.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10. . . protection cap

11. . . Touch surface

111. . . Display area

1121. . . Button area

12. . . back

20. . . Display panel

twenty one. . . Optical substrate

211. . . Upper surface

212. . . lower surface

213. . . Touch layer

twenty two. . . TFT substrate

twenty three. . . Backlight module

30. . . Light source module

40. . . Circuit board

50. . . Optical glue

Claims (10)

An electronic device with a touch function includes a protective cover and a display panel; the protective cover includes a touch surface, the touch surface includes a display area and a button area separated from the display area; The display panel includes an optical substrate on which the circuit is disposed to form a touch layer; the display panel is located below the protective cover, and the optical substrate extends from the display area of the protective cover to the button area The touch layer senses touch on the button area and the display area. The touch-enabled electronic device of claim 1, wherein the protective cover is a transparent protective glass. The electronic device with touch function according to claim 1, wherein the optical substrate is a color filter. The touch panel of the electronic device of claim 1, wherein the display panel further comprises a TFT substrate and a backlight module, wherein the TFT substrate is located between the optical substrate and the backlight module . The touch-enabled electronic device of claim 4, wherein the TFT substrate and the backlight module cover a display area of the protective cover without contacting the button area. The electronic device with a touch function as described in claim 5, wherein the electronic device with a touch function further includes a light source module, and the light source module is located at a side of the TFT substrate adjacent to the button area. The side and the optical substrate extending to the button area are directly under. The electronic device with touch function according to claim 6, wherein: the size of the optical substrate is larger than the size of the TFT substrate. The electronic device with touch function according to claim 1, wherein: the button area is provided with a plurality of different button identifiers. The touch-enabled electronic device of claim 1, wherein the protective cover comprises an edge region surrounding the display area, and the button is disposed in the edge region. The electronic device with a touch function as described in claim 1, wherein the protective cover includes a back surface opposite to the touch surface, and the display panel and the protective cover are bonded by an optical adhesive.