TWI587189B - Touch panel with pressure sensing function - Google Patents

Description

Touch panel

A touch panel, especially a touch panel with a pressure sensing function.

The touch panel is generally divided into two types: resistive and capacitive. The resistive type needs to be touched by the touch. The sensing effect is worse than that of the capacitive touch panel, but the capacitive touch panel is still poor. There are disadvantages. When the user wears gloves or fingers dipped in water, the corresponding touch response cannot be fed back, and only the position of the touch (X, Y direction) can be judged, and the force of the touch is not tested, that is, the current capacitive type is indicated. The touch panel can't open the second-order and third-order menus at one time, but still can't meet more and more people's interactive application requirements. Because users need simpler, more convenient and quicker human-computer interaction experience, many human-computer interactions The application came into being.

The current capacitive touch panel is mainly for the auxiliary operation of multiple functions through gestures. For pressure sensing (recognizing the pressure when the user touches), the detection is still impossible. Other functions still need to be transmitted through the dots and pressed. Do different things.

Therefore, if pressure sensing is still added as the core function, the "press and press" operation returns to the "right click" mode, and the instrument operation and game play can further bring a more powerful tool or experience to the user. Just like operating the right mouse button on the touch panel will change the user's operating habits and experience again, and further close the operating disadvantage compared with the PC. The pressure sensing function has not been officially integrated on the touch panel for the user, so it is aimed at the pressure. The assembly of the sensor for the touch terminal has not yet been perfected, so the application of this new technology to the assembly structure of the touch terminal is to be solved.

Therefore, in order to solve the above disadvantages of the prior art, the main object of the present invention is to provide a touch panel that integrates a pressure sensing function on a touch panel.

To achieve the above objective, the present invention provides a touch panel comprising: a substrate, a shielding layer, an electrode layer, an optical adhesive layer, and a pressure sensing layer; the substrate has a first plane and a first The second plane is disposed on the upper and lower sides of the substrate, and defines a touch area and a non-touch area on the first plane, wherein the non-touch area is adjacent to the touch area; the shielding layer The non-touch area is disposed on the second plane of the substrate; the electrode layer is disposed on the second plane of the substrate, the electrode layer has a plurality of first electrodes and a plurality of second electrodes and a plurality of metal wires, the first and second The electrode system is electrically connected to the metal traces; the optical adhesive layer covers the electrode layer; and the pressure sensing layer is disposed in the non-touch region.

By integrating the pressure sensing layer setting into the integrated design of the touch panel, the touch panel can provide the function of pressure sensing in addition to the conventional gesture-operable touch function, and increase the effect of the other operation control of the touch panel. .

1‧‧‧Touch Module

11‧‧‧Substrate

11a‧‧‧ touch area

11b‧‧‧ non-touch area

111‧‧‧ first plane

112‧‧‧ second plane

12‧‧‧Shielding layer

13‧‧‧Electrode layer

131‧‧‧First electrode

132‧‧‧second electrode

133‧‧‧Metal wire

14‧‧‧Optical adhesive layer

15‧‧‧ Pressure sensing layer

1 is a perspective exploded view of a first embodiment of a touch panel of the present invention; FIG. 2 is a cross-sectional view of a first embodiment of the touch panel of the present invention; and FIG. 3 is a second view of the touch panel of the present invention. Embodiments are cross-sectional views of a combination; FIG. 4 is a cross-sectional view of a third embodiment of the touch panel of the present invention;

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

1 and 2 are a perspective exploded view and a combined cross-sectional view of a first embodiment of the touch panel of the present invention. As shown, the touch module 1 includes a substrate 11 and a shielding layer. 12, an electrode layer 13, an optical adhesive layer 14, a pressure sensing layer 15; the substrate 11 (which may be made of glass or polyethylene terephthalate (PET) has a first The plane 111 and the second plane 112 are disposed on the upper and lower sides of the substrate 11 and define a touch area 11a and a non-touch area 11b on the first plane 111. The non-touch area 11b The touch area 11a is adjacent to the touch area 11a and disposed outside the touch area 11a.

The shielding layer 12 is disposed on the non-touch area 11b of the second plane 112 of the substrate 11 and surrounds the outside of the touch area 11a.

The electrode layer 13 is disposed on the second plane 112 of the substrate 11. The electrode layer 13 has a plurality of first electrodes 131 and a plurality of second electrodes 132 and a plurality of metal wires 133. The first and second electrodes 131 and 132 are selected. The first and second electrodes 131 and 132 and the metal wires 133 are disposed adjacent to each other, and the first and second electrodes 131 and 132 are not in contact with each other.

The pressure sensing layer 15 is disposed on the non-touch area 11b, and the pressure sensing layer 15 is disposed in parallel with the electrode layer 13. In this embodiment, the pressure sensing layer 15 is disposed on the shielding layer 12 opposite to the substrate 11. On the other side of the touch panel 11b, the first and second electrodes 131 and 132 are disposed on the touch area 11a, and the pressure sensing layer 15 and the optical adhesive layer 14 are juxtaposed to each other.

Please refer to FIG. 3 , which is a cross-sectional view of a second embodiment of the touch panel of the present invention. As shown in the figure, the structure of the embodiment is the same as that of the first embodiment, and therefore will not be further described herein. The difference from the first embodiment is that the pressure sensing layer 15 is disposed on the side of the optical layer 14 opposite to the electrode layer 13.

FIG. 4 is a cross-sectional view showing a third embodiment of the touch panel of the present invention. As shown in the figure, the structure of the embodiment is the same as that of the first embodiment, and therefore will not be described herein again. The difference between the example and the foregoing first embodiment is that the partial electrode layer 13 and the pressure sensing layer 15 are disposed under the shielding layer 12 of the non-touch area 11b, and the pressure sensing layer 15 and the electrode layer 13 is juxtaposed to each other, and the optical adhesive layer 14 is coated on the side of the electrode layer 13.

The pressure sensing system can additionally provide a user with one-handed operation of the large screen mobile phone, and can zoom in or out the window or the picture with a single finger, or adjust the volume, which improves the operation convenience and change of the touch panel. Sexuality, in addition, the pressure sensing method can be used to assist the drawing work to change the thickness of the line or the thickness of the handwritten type of stroke, which can increase the recognition of the user's writing font.

1‧‧‧Touch Module

11‧‧‧Substrate

11a‧‧‧ touch area

11b‧‧‧ non-touch area

111‧‧‧ first plane

112‧‧‧ second plane

12‧‧‧Shielding layer

13‧‧‧Electrode layer

131‧‧‧First electrode

132‧‧‧second electrode

133‧‧‧Metal wire

14‧‧‧Optical adhesive layer

15‧‧‧ Pressure sensing layer

Claims (4)

A touch panel includes a substrate having a first plane and a second plane disposed on the upper and lower sides of the substrate, and defining a touch area and a non-touch on the first plane The non-touch area is adjacent to the touch area; a shielding layer is disposed on the non-touch area of the second plane of the substrate; an electrode layer is disposed on the second plane of the substrate, and the electrode layer has a plurality of The first electrode and the plurality of second electrodes and the plurality of metal wires, wherein the first and second electrodes are electrically connected to the metal wires; an optical adhesive layer covers the electrode layer; and a pressure sensing layer is disposed on the non-electrode In the touch area, the pressure sensing layer is disposed on a side of the shielding layer opposite to the substrate and parallel to the electrode layer, the pressure sensing layer is disposed side by side with the optical adhesive layer, and the pressure sensing layer is integrated and integrated The control panel is integrated. The touch panel of claim 1, wherein the pressure sensing layer is disposed on a side of the optical layer opposite to the electrode layer. The touch panel of claim 1, wherein the non-touch area is disposed outside the touch area. The touch panel of claim 1, wherein the substrate is made of glass or polyethylene terephthalate (PET).