TW201349058A - Double-sided touch panel - Google Patents

Abstract

A double-sided touch panel comprises a display module having a first induction surface and a second induction surface opposite the first induction surface, a first touch induction module disposed on the first induction surface of the display module, a second touch induction module disposed on the second induction surface of the display module, a first protect cover disposed on the first touch induction module, a second protect cover disposed on the second touch induction module, and a control circuit module electrically connected to the first and second touch induction modules. By such arrangements, the first and second touch induction modules can show the same image simultaneously, so as to achieve the objectives of double-sided touching and simultaneously showing.

Description

Double-sided touch panel

The present invention relates to a touch panel, and more particularly to a touch panel having a double-sided touch function.

According to the rapid development and application of information technology, wireless mobile communication and information appliances, information products are mainly developed for the purpose of improving convenience, compactness and user-friendliness, thus inputting devices and panels such as keyboards and mice. The touch panel that is converted into a direct input operation on the panel, please refer to the figures 1 to 3. Currently, the touch panel is mainly classified into a resistive type and a surface capacitive type according to the structure and the sensing form. , optical (infrared), surface acoustic wave, and projected capacitors, etc.

The touch-sensitive sensing module 12 is disposed on a display module 11 , and the touch-sensing module 12 includes two conductive layers 121 and a plurality of A spacer 122 between the conductive layers 121 presses the surface of the touch panel with a finger or other force to make the two conductive layers 121 contact and the circuit is turned on and calculates the contact position, but the operation mode also leads to The resistive touch panel 10a is not scratch resistant.

The surface capacitive touch panel 10b of FIG. 2 is generated by the use of the resistive touch panel 10a. The touch sensing module 12 has a glass base layer 123 disposed between the two conductive layers 121. The outer conductive layer 121 of the touch sensing module 12 is provided on the surface of the glass base layer 123. A uniform electric field, the inner conductive layer 121 is used for shielding to avoid interference, whereby the surface capacitive touch panel 10b achieves the touching purpose by sensing the weak current of the human body, and the surface of the outer conductive layer 121 is further provided with a The protective layer 124 having a high hardness provides a problem that the improved resistive touch panel 10a is not scratch resistant.

In addition, the projected capacitive touch panel 10c shown in FIG. 3 has an air gap S between the touch sensing module 12 and the display module 11, and the two conductive layers 121 of the touch sensing module 12 For protection, a shielding conductive layer 125 is disposed between the inner conductive layer 121 and the glass base layer 123, a patterned conductive layer 126 is disposed between the outer conductive layer 121 and the glass base layer 123, and a glue layer 127 is disposed on the surface. A protective layer 13 is attached; since it has a single-layer or multi-layer patterned ITO layer to form a row/column interleaved sensing sensor (Sensor) matrix compared to the surface capacitive touch panel 10b, it can be accurately aligned without calibration Touch position, and can achieve multi-touch operation when using a thick cover layer, becoming the most popular touch technology.

It is worth noting that the resistive and surface capacitive touch panels are based on the principle of the touch technology. The former is contacted by the two conductive layers 121, and the latter is generated on the one side of the glass layer 123 due to the electric field, thereby limiting the touch panel. Single-touch operation, such that when the single-hand operation is performed, the finger-shadowing image affects the smoothness of the operation. In the case of double operation, the size of the general touch panel may not be simultaneously operated on the touch panel. use.

Therefore, the inventor of the present invention is based on the technical principle that the projected capacitive touch panel 10c will form a three-dimensional electric field after being energized, and it is considered necessary to propose a Double-sided touch panel to further improve the use of the above touch panel.

An object of the present invention is to provide a double-sided touch panel, which is mainly provided with a touch sensing module on the opposite side of the display module, so that the touch sensing module is electrically connected to the control module and the display module. Connected to achieve double-sided display and touch function of the touch panel.

In order to achieve the above objective, a double-sided touch panel according to the present invention includes: a display module having opposite sides, one side being defined as a first sensing surface, and the other side being a second sensing The first touch sensing module is disposed on the first sensing surface of the display module, the first touch sensing module is a projected capacitive touch module, and the second touch sensing module is provided. The second touch sensing module is a projected capacitive touch module; a first protective cover is disposed on the first touch sensing module; and a second protection is provided on the second sensing surface of the display module. The cover is disposed on the second touch sensing module; the control circuit module is electrically connected to the first touch sensing module, the second touch sensing module and the display module The second touch sensing module electrically controls the display module by using the control circuit module.

The preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

First of all, please refer to Figure 4 and Figure 5, which is provided by the present invention. A preferred embodiment of the double-sided touch panel includes a display module 20, two sensing modules 30, two protective covers 40a and 40b, and a control circuit module 50. The display module 20 has A light guide plate 21 and a side projection module 22, the light guide plate 21 is a light transmissive optical plate structure and has opposite sides, one side of which is defined as a first sensing surface 201 and the other surface is a second sensing surface 202 And the four sensing surfaces 203 are connected between the first sensing surface 201 and the second sensing surface 202, so that the side projection module 22 is projected corresponding to one of the projection surfaces 203, and developed in the first and second sensing The two touch sensing modules 30 are projected capacitive touch modules, which are disposed on the first and second sensing surfaces 202 of the light guide plate 21 of the display module 20, and are respectively defined as one. The first touch sensing module 30 is disposed on the first sensing surface 201 of the display module 20, and the second touch sensing module 30b is disposed on the second sensing surface 202 of the display module 20; 40a, 40b are corresponding to the two touch sensing modules 30, and are respectively defined as a first protection The cover 40a is disposed on the first touch sensing module 30a, and a second protective cover 40b is disposed on the second touch sensing module 30b. In this embodiment, the first and second protective covers 40a The first and second protective covers 40a, 40b each have a bonding layer 41 for combining with the first and second touch sensing modules 30a, 30b, wherein the first 1. The second protective cover 40a, 40b is a layered structure composed of a transparent material such as glass, polyethylene, polypropylene, polycarbonate or acrylic. The first and second protective covers 40a, 40b are integrally formed on the first and second touch sensing modules 30a, 30b via in-mold decoration technology; The first and second touch sensing modules 30a are electrically connected to the first touch sensing module 30a, the second touch sensing module 30b and the display module 20 The control module 20 is electrically controlled by the control circuit module 50.

The above description is the main components of the embodiment of the present invention and the configuration description thereof. As for the operation mode and the function of the preferred embodiment of the present invention, the following description will be made.

The double-sided touch panel of the present invention is mainly configured by the above-mentioned embodiment. The light guide plate 21 of the display module 20 is in a see-through state before being activated, and the image is directed to the light guide plate through the side projection module 22 after being activated. The projection surface 203 of the projection 203 is projected by the light guide plate 21 to display the image on the first and second sensing surfaces 202. The two touch sensing modules 30 are electrically connected by the control circuit module 50. The display image of the display module 20 is displayed, and the touch operation of double-sided touch and development as shown in FIG. 5 is achieved.

Please refer to FIG. 6 to show the structure of the touch panel for performing double-sided touch operation by the projection capacitive touch sensing module 30. As shown in the figure, the first and second touch sensing modules are as shown in the figure. Each of the 30a and 30b has an attaching layer 31 for being disposed on the first and second sensing surfaces 201 and 202 of the display module 20. The attaching layer 31 is formed by a layer formed by optical glue, and is also a The plastic frame 311 is disposed on a layer structure formed on a side of a medium 312, and the medium 312 The adhesive layer 31 may be provided with a glass layer 32 and a conductive pattern layer 33, and the bonding layer 41 of the first and second protective covers 40a and 40b is disposed on the adhesive layer 31. The conductive pattern layer 33 is formed on the protective layer 334 of the conductive pattern layer 33, wherein the conductive pattern layer 33 is composed of a Y-direction conductive pattern layer 331 and an X-direction conductive pattern layer 332, and the Y-direction and the X-direction conductive pattern are formed. A protective layer 333 is disposed between the layers 331, 332.

It should be noted that, as shown in FIG. 7 , another embodiment of the double-sided touch panel of the present invention is shown. Since the projected capacitive touch sensing module is activated, it will form a shape on its opposite sides. The present invention can also provide a projected capacitive touch sensing module 30 on one of the sensing surfaces 201/202 of the light guide plate 21 of the display module 20, The multiplex processing is performed to form a multi-touch operation on both sides of the display module 20. For example, in the seventh embodiment, the touch sensing module 30 is disposed on the second sensing surface 202 of the light guide plate 21, and The first protection cover 40 is disposed on the second sensing surface 202 of the light guide plate 21 of the display module 20, and is transmitted through the control circuit module 50. The touch sensing module 30 is electrically connected to achieve the purpose of providing a double-sided touch panel.

In summary, the present invention provides two sides of the touch panel and a synchronous display by providing two sensing modules on opposite sides of the display module and electrically connecting the two touch sensing modules with the control circuit module. The purpose of the touch function is to provide a more convenient and user-friendly touch operation.

"Knowledge"

10a‧‧‧Resistive touch panel

10b‧‧‧Surface capacitive touch panel

10c‧‧‧Projected capacitive touch panel

11‧‧‧Display module

12‧‧‧Touch sensor module

121‧‧‧ Conductive layer

122‧‧‧Isolation point

123‧‧‧ glass base

124‧‧‧Protective layer

125‧‧‧Shielding conductive layer

126‧‧‧patterned conductive layer

127‧‧‧ glue layer

13‧‧‧Protective layer

S‧‧‧Air gap

"this invention"

20‧‧‧Display module

21‧‧‧Light guide

22‧‧‧Side projection module

201‧‧‧First sensing surface

202‧‧‧Second sensing surface

203‧‧‧projection surface

30‧‧‧Touch sensor module

31‧‧‧ Attachment

311‧‧‧ plastic frame

312‧‧‧Media

32‧‧‧ glass layer

33‧‧‧ Conductive pattern layer

331‧‧‧Y-direction conductive pattern layer

332‧‧‧X-direction conductive pattern layer

333‧‧‧Protective layer

334‧‧‧Protective layer

30a‧‧‧First touch sensing module

30b‧‧‧Second touch sensing module

40a‧‧‧First protective cover

40b‧‧‧Second protective cover

41‧‧‧Fitting layer

50‧‧‧Control circuit module

Fig. 1 is a schematic view showing the structure of a conventional resistive touch panel.

FIG. 2 is a schematic structural view of a conventional surface capacitive touch panel.

FIG. 3 is a schematic structural view of a conventional projected capacitive touch panel.

Fig. 4 is a schematic structural view of a double-sided touch panel of the present invention.

Fig. 5 is a schematic view showing the state of use of the double-sided touch panel of the present invention.

FIG. 6 is a schematic structural view of a projected capacitive touch sensing module of the double-sided touch panel of the present invention.

Figure 7 is a schematic view showing another embodiment of the double-sided touch panel of the present invention.

20‧‧‧Display module

21‧‧‧Light guide

22‧‧‧Side projection module

201‧‧‧First sensing surface

202‧‧‧Second sensing surface

30a‧‧‧First touch sensing module

30b‧‧‧Second touch sensing module

40a‧‧‧First protective cover

40b‧‧‧Second protective cover

41‧‧‧Fitting layer

50‧‧‧Control circuit module

Claims (9)

A double-sided touch panel includes: a display module having two opposite sides, one side being a first sensing surface and the other side being a second sensing surface; and a first touch sensing module disposed on the display The first sensing surface of the module is a projected capacitive touch module; a second touch sensing module is disposed on the second sensing surface of the display module, the second touch The control sensor module is a projected capacitive touch module; a first protective cover is disposed on the first touch sensing module; and a second protective cover is disposed on the second touch sensing module; The control circuit module is electrically connected to the first touch sensing module, the second touch sensing module and the display module, so that the first and second touch sensing modules are controlled by the control circuit module The display module is electrically controlled. The double-sided touch panel of claim 1, wherein the display module has a light guide plate and a side projection module, and the first sensing surface and the second sensing surface are formed on the light guide plate. The two side surfaces have a four-projection surface connection between the first sensing surface and the second sensing surface, so that the side projection module is projected corresponding to one of the projection surfaces, and is developed on the first and second sensing surfaces. A double-sided touch panel comprising: A display module has a light guide plate and a side projection module, the light guide plate has opposite sides, one side is defined as a first sensing surface, and the other surface is a second sensing surface, the first sensing surface and the second sensing There is a four-projection surface connection between the surfaces, the side projection module is configured to project one of the projection surfaces of the light guide plate, and is developed on the first and second sensing surfaces; a touch sensing module is disposed on a second sensing surface of the light guide plate of the display module; a first protective cover disposed on the first sensing surface of the light guide plate of the display module; a second protective cover disposed on the touch sensing module; A control circuit module is electrically connected to the touch sensing module. The double-sided touch panel of claim 1 or 3, wherein the first and second protective covers are formed into a cover structure, and the first and second protective covers each have a bonding layer. For combining with the first and second touch sensing modules. The double-sided touch panel of claim 4, wherein the first and second protective covers are layered by a transparent material of glass, polyethylene, polypropylene, polycarbonate or acrylic. Structure, the bonding layer is a layered structure composed of optical glue. The double-sided touch panel of claim 1 or 3, wherein the first and second protective covers are integrally formed on the first and second touch sensing modules via in-mold decoration technology. The double-sided touch panel of claim 1 or 3, wherein the first and second touch sensing modules are projected capacitive touch sensing modules, each having an attach layer corresponding to a first glass layer and a conductive pattern layer are disposed on the first and second sensing surfaces of the display module, and the bonding layer of the first and second protective covers is disposed on the conductive layer. On the graphic layer. The double-sided touch panel of claim 7, wherein the conductive pattern layer has a Y-direction conductive pattern layer and an X-direction conductive pattern layer, and the Y-direction and the X-direction conductive pattern are used. A protective layer is provided between the layers. The double-sided touch panel of claim 7, wherein the attaching layer is a layer structure composed of a plastic frame and a medium.