TWM496804U - Touching display device - Google Patents

Abstract

This invention provides a touching display device which comprises a cover plat, a liquid crystal module, a first polarizing layer, an adhesive electrode structure and a second touching electrode layer. The liquid crystal module is spaced apart from the cover plate. The first polarizing layer is disposed between the cover plate and the liquid crystal module. The adhesive electrode structure is disposed between the cover plate and the first polarizing layer, or disposed between the first polarizing layer and the liquid crystal module. The adhesive electrode structure includes an adhesive base and a first touching electrode layer. The adhesive base has electrical isolation property and thermal adhesive property. The first touching electrode layer is disposed on the adhesive base. The second touching electrode layer is disposed between the cover plate and the first polarizing layer or disposed between the first polarizing layer and the liquid crystal module, and is electrically isolated from the adhesive electrode structure.

Description

Touch display device

The present invention relates to a touch display device, and more particularly to a touch display device that is easy to manufacture and has a high yield.

The touch panel is a common human interface for various electronic devices. It can feed back the sensing signals generated by the user touching the screen surface to the corresponding soft and hardware devices, so that the user can perform the electronic device. Control. In the conventional capacitive touch screen, the structure includes a glass cover, a touch electrode, an electrode lead, an electrode substrate, a protective layer, an adhesive layer, a polarizer, a liquid crystal module, etc., due to a large number of components, The existing touch screen production process is complicated and the yield is low.

Therefore, the object of the present invention is to provide a touch display device that is easy to manufacture and has a high yield.

Therefore, the touch display device of the present invention comprises a cover, a liquid crystal module, a polarizing layer, a bonding electrode structure and a second touch electrode layer. The cover plate is light transmissive and has a lower surface, the liquid crystal module is disposed at intervals between the cover plate and has an upper surface, the upper surface of the liquid crystal module and the The lower surface of the cover is opposite. The polarizing layer is disposed between the cover plate and the liquid crystal module and has an upper surface and a lower surface on opposite sides, and a lower surface of the cover plate is opposite to an upper surface of the polarizing layer. The bonding electrode structure is disposed between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal module, and includes a bonding substrate and a first touch electrode layer. The bonded substrate has electrical insulation and heat adhesion. The first touch electrode layer is disposed on a surface of the bonding substrate. The second touch electrode layer is disposed between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal module, and is electrically insulated from the first touch electrode layer.

In one embodiment, the bonding substrate of the bonding electrode structure is attached to the lower surface of the cover, such that the first touch electrode layer is located between the cover and the polarizing layer; The touch electrode layer is disposed on the upper surface of the polarizing layer, the lower surface of the polarizing layer, or the upper surface of the liquid crystal module.

In one embodiment, the bonding substrate of the bonding electrode structure is attached to the upper surface of the polarizing layer such that the first touch electrode layer is located between the cover plate and the polarizing layer; The touch electrode layer is disposed on a lower surface of the cover, a lower surface of the polarizing layer or an upper surface of the liquid crystal module.

In one embodiment, the bonding substrate of the bonding electrode structure is attached to the lower surface of the polarizing layer, such that the first touch electrode layer is located between the polarizing layer and the liquid crystal module; The touch electrode layer is disposed on a lower surface of the cover, an upper surface of the polarizing layer or an upper surface of the liquid crystal module.

In one embodiment, the bonding substrate of the bonding electrode structure is attached to the upper surface of the liquid crystal module, so that the first touch electrode layer is located The polarizing layer is disposed between the polarizing layer and the liquid crystal module; the second touch electrode layer is disposed on a lower surface of the cover, an upper surface of the polarizing layer or a lower surface of the polarizing layer.

Preferably, the first touch electrode layer is made of a liquid conductive material containing a conductive polymer material or a nano metal material. The first touch electrode layer has an oxygen-suppressive photosensitive curing property. The main material of the bonding substrate is silicone or acrylic, and its heat adhesion is mainly exhibited between 100 degrees Celsius and 140 degrees Celsius, and has photosensitive curing properties.

Another touch display device proposed by the present invention comprises a cover, a liquid crystal module, a polarizing layer, a first bonding electrode structure and a second bonding electrode structure. The cover plate is translucent and has a lower surface. The liquid crystal module is disposed at a distance from the cover plate and has an upper surface. The upper surface of the liquid crystal module is opposite to the lower surface of the cover plate. The polarizing layer is disposed between the cover plate and the liquid crystal module and has an upper surface and a lower surface on opposite sides, and a lower surface of the cover plate is opposite to an upper surface of the polarizing layer. The first bonding electrode structure is disposed between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal module, and includes a first bonding substrate and a first touch electrode layer . The first bonding substrate has electrical insulation and heat adhesion. The first touch electrode layer is disposed on a surface of the first bonding substrate. The second bonding electrode structure is disposed between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal module, and is electrically insulated from the first bonding electrode structure, and includes a a second bonding substrate having electrical insulation and heat adhesion and a second touch electrode layer. The second touch electrode layer is disposed on the second bonding substrate.

In one embodiment, the first bonding substrate of the first bonding electrode structure is attached to the lower surface of the cover, such that the first touch electrode layer is located between the cover and the polarizing layer. The second bonding substrate of the second bonding electrode structure is attached to the upper surface of the polarizing layer, the lower surface of the polarizing layer or the upper surface of the liquid crystal module.

In one embodiment, the first bonding substrate of the first bonding electrode structure is attached to the upper surface of the polarizing layer, such that the first touch electrode layer is located between the cover plate and the polarizing layer; The second bonding substrate of the second bonding electrode structure is attached to the lower surface of the cover, the lower surface of the polarizing layer or the upper surface of the liquid crystal module.

In one embodiment, the first bonding substrate of the first bonding electrode structure is attached to the lower surface of the polarizing layer, such that the first touch electrode layer is located between the polarizing layer and the liquid crystal module. The second bonding substrate of the second bonding electrode structure is attached to the lower surface of the cover, the upper surface of the polarizing layer or the upper surface of the liquid crystal module.

In one embodiment, the first bonding substrate of the first bonding electrode structure is attached to the upper surface of the liquid crystal module, so that the first touch electrode layer is located on the polarizing layer and the liquid crystal module. The second bonding substrate of the second bonding electrode structure is attached to the lower surface of the cover plate, the upper surface of the polarizing layer or the lower surface of the polarizing layer.

Preferably, the first touch electrode layer and the second touch electrode layer are made of a liquid conductive material containing a conductive polymer material or a nano metal material. The first touch electrode layer and the second touch electrode layer have photosensitive curing properties.

Preferably, the main material of the first bonding substrate and the second bonding substrate is silicone or acrylic, and the heat adhesion of the two is mainly between 100 degrees Celsius and 140 degrees Celsius. And has photosensitive curing properties.

The utility model has the advantages that the thinning and large-sized touch display device can be realized by the arrangement of the bonding electrode structure, and the process steps of the touch display device can be simplified, and the process yield can be improved.

1‧‧‧Touch display device

2‧‧‧ Cover

21‧‧‧ Lower surface

3‧‧‧LCD Module

31‧‧‧ upper surface

4‧‧‧ polarizing layer

41‧‧‧ upper surface

42‧‧‧ lower surface

5‧‧‧Fixed electrode structure

51‧‧‧Material substrate

511‧‧‧ upper surface

521‧‧‧ lower surface

52‧‧‧First touch electrode layer

53‧‧‧Upper release layer

54‧‧‧Under release layer

6‧‧‧Second touch electrode layer

71‧‧‧First adhesive layer

72‧‧‧Second Adhesive Layer

73‧‧‧Photomask

8‧‧‧Second laminated electrode structure

81‧‧‧Second laminated substrate

82‧‧‧Second touch electrode layer

S01~S03‧‧‧ Process steps

S11~S16‧‧‧ process steps

S21~S23‧‧‧ Process steps

The other features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, wherein: FIG. 1 is a side view showing a first embodiment of the novel touch display device; 2 is a flow chart for explaining a method of manufacturing the touch display device according to the first embodiment of the present invention; FIG. 3 and FIG. 4 are schematic views related to the fabrication of FIG. 2; and FIG. 5 is a flow chart illustrating the pair of bonding electrodes of the present invention. FIG. 6 to FIG. 8 are schematic views related to the fabrication of FIG. 5; FIG. 9 is a side view showing a second embodiment of the touch display device of the present invention; FIG. A method of manufacturing the touch display device of the second embodiment of the present invention will be described; and FIG. 11 is a schematic view of the fabrication of FIG.

The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

First embodiment

Referring to FIG. 1 , a first embodiment of the touch display device 1 of the present invention is applicable to electronic devices such as mobile phones, tablet computers, and notebook computers, and is not limited to a specific application mode.

The touch display device 1 includes a cover 2, a liquid crystal module 3, a polarizing layer 4, a bonding electrode structure 5, a second touch electrode layer 6, a first adhesive layer 71, and a second adhesive layer. 72.

The cover 2 is made of a light transmissive material such as glass, which is the outermost surface of the touch display device 1 and provides a protective function. It should be noted here that the material of the cover plate 2 may be selected from polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and polycarbonate (PC) in practical applications. The new type is not limited to this.

The liquid crystal module 3 is disposed at the spacing cover 2, and includes components such as a color filter, a liquid crystal layer, a thin film transistor layer, and a backlight, which are not drawn in the figure, for adjusting image light and controlling the output of the image frame.

The polarizing layer 4 is disposed between the cover 2 and the liquid crystal module 3 for controlling the polarization of the image light. The polarizer having a multi-layer polymer film may be used, but not limited thereto. In addition, the touch display device 1 is further advanced. The first step includes a second polarizing layer (not shown), and the liquid crystal module 3 is disposed between the polarizing layer 4 and the second polarizing layer, wherein the polarization direction of the polarizing layer 4 is perpendicular to the polarization direction of the second polarizing layer.

The bonding electrode structure 5 is disposed between the cover 2 and the polarizing layer 4 and includes a bonding substrate 51 and a first touch electrode layer 52.

The bonding substrate 51 is made of a material such as silicone or acryl (polymethyl methacrylate), which has electrical insulation, heat adhesion and photosensitive curing properties, and is attached to the upper surface of the polarizing layer 4 . 41. Thus, the film can be used as the processing carrier substrate of the first touch electrode layer 52, and at the same time, the bonding electrode structure 5 can be attached to the upper surface 41 of the polarizing layer 4 by its own heating and adhesive function. The arrangement of the substrate 51 can simultaneously replace the first touch electrode layer 52 in the prior art. A separate processing carrier substrate and a corresponding adhesive layer are used to adhere the first touch electrode 52 to the upper surface 41 of the polarizing layer 4, so that the contact The control display device 1 is light and thin. In this embodiment, the heat adhesion of the bonded substrate 51 is mainly exhibited between 100 degrees Celsius and 140 degrees Celsius, which is lower than that used in the sputtering process of indium tin oxide (ITO) in the prior art. The temperature (200 degrees Celsius) can avoid damage to the structure of the touch display device 1 during the manufacturing process, and improve the yield of the touch display device 1. Further, the bonding substrate 51 can be further cured by ultraviolet light irradiation under an environmental condition lacking oxygen according to its oxygen inhibition characteristics. However, depending on the needs, the bonding substrate 51 may be changed in its characteristics by adjusting the material or internal components thereof, and is not limited to the above. On the other hand, according to the design of the touch display device 1 of different sizes, the bonding substrate 51 can adjust its thickness correspondingly. Thicker bonded substrate 51 can be mentioned It has a strong adhesive strength and is suitable for a large-sized touch display device 1. However, when the thickness of the bonded substrate 51 is too thin, the substrate bonding 51 is difficult to manufacture and the yield is high due to difficulty in production. Low problem. Therefore, in the present embodiment, the thickness of the bonding substrate 51 is set to be in the range of 3 micrometers to 20 micrometers, so that a better balance can be achieved in thinning, structural strength and manufacturing yield, but the novel Not limited to this.

The first touch electrode layer 52 is disposed on the surface of the bonding substrate 51 and is made of a conductive material and has a plurality of first touch electrodes arranged at intervals. In the actual design, according to different needs, the specific electrode shape of the first touch electrode layer 52 can be adjusted accordingly, and is not limited to a specific type.

In this embodiment, the first touch electrode layer 52 is made of a liquid material containing a conductive polymer material or a nano metal material, and thus can be disposed on the surface of the bonding substrate 51 by printing or coating. The conductive polymer material is, for example, poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT:PSS), and the nano metal material is, for example, nano silver or nano copper, but the novel is not This is limited to this. In addition, the first touch electrode layer 52 can be made of a liquid conductive material having both oxygen-suppressing and photo-curing properties, so that the first touch electrode layer 52 can be patterned without etching treatment, thereby simplifying the fabrication. The process, the production techniques in this section will be explained in the following paragraphs.

The second touch electrode layer 6 is disposed between the cover 2 and the polarizing layer 4 , where it is located on the lower surface 21 of the cover 2 and electrically insulated from the bonding electrode structure 5 . The second touch sensing electrode layer 6 has a plurality of second touch electrodes arranged at intervals, and each of the first touch electrodes and each of the second touch electrodes A capacitor array can be formed in the touch display device 1 by being orthogonally arranged and partially overlapping each other. When the touch display device 1 is touched by a touch object such as a finger, the detection can be performed according to the capacitance change of each area on the capacitor array to achieve the effect of touch sensing and positioning. In this embodiment, the second touch electrode layer 6 is formed by indium tin oxide (ITO) through a plating process and a patterning process. In a practical application, the material of the second touch electrode layer 6 can be the same material as the first touch electrode layer 52. However, according to different needs, the specific electrode shape of the second touch electrode layer 6 can be adjusted accordingly, and is not limited to a specific type.

The first adhesive layer 71 and the second adhesive layer 72 are made of materials such as Optical Clear Adhesive (OCA) and Liquid Optical Clear Adhesive (LOCA), and are respectively disposed on the second touch electrode layer 6 and Between the electrode structures 5 and between the polarizing layer 4 and the liquid crystal module 3, the adhesion and insulation effects are provided.

In addition, the bonding substrate 51 of the bonding electrode structure 5 can be used as the carrier substrate processed and disposed as the first touch electrode layer 52, and has the heating and adhesive property itself. Therefore, the bonding electrode structure 5 does not need to use the optical adhesive. , can be directly attached to the polarizing layer 4, which is convenient for the process.

On the other hand, the first touch electrode layer 52 of the bonded electrode structure 5 is made of a liquid conductive material having a photosensitive curing property and containing a conductive polymer material or a nano metal material, and the material can be exposed and developed. The pattern definition of the first touch electrode layer 52 is completed, and the etching process is not required, which contributes to the simplification of the process and the improvement of the yield.

It should be noted that in the present embodiment, the laminated electrode structure 5 is The first touch electrode layer 52 is disposed between the cover 2 and the polarizing layer 4, and the second touch electrode layer 6 is disposed on the upper surface 41 of the polarizing layer 4 The lower surface 21 of the cover 2 can provide touch sensing in the X direction and the Y direction by the first touch electrode layer 52 and the second touch electrode layer 6 of the electrode structure 5 . However, in different implementations, the arrangement positions of the bonding electrode structure 5 and the second touch electrode layer 6 can be adjusted correspondingly.

For example, in the embodiment, when the bonding electrode structure 5 is attached to the upper surface 41 of the polarizing layer 4, the second touch electrode layer 6 may be further disposed on the lower surface 42 of the polarizing layer 4 or the liquid crystal module 3. The upper surface 31, this configuration also provides touch sensing. Alternatively, the bonding electrode structure 5 can be attached to the lower surface 21 of the cover plate 2 by the bonding substrate 51. The second touch electrode layer 6 can be disposed on the upper surface 41 of the polarizing layer 4 at this time. The lower surface 42 of the polarizing layer 4 or the upper surface 31 of the liquid crystal module 3. Or, the bonding electrode structure 5 can be attached to the lower surface 42 of the polarizing layer 4 by the bonding substrate 51, so that the first touch electrode layer 52 is located between the polarizing layer 4 and the liquid crystal module 3. The second touch electrode layer 6 can be disposed on the lower surface 21 of the cover 2, the upper surface 41 of the polarizing layer 4, or the upper surface 31 of the liquid crystal module 3. In addition, the bonding electrode structure 5 can also be attached to the upper surface of the liquid crystal module 3 by the bonding substrate 51. The second touch electrode layer 6 can be disposed on the lower surface 21 of the cover 2, The upper surface 41 of the polarizing layer 4 or the lower surface 42 of the polarizing layer 4. Therefore, according to the above, the position where the bonding electrode structure 5 and the second touch electrode layer 6 are disposed can be adjusted as needed, as long as the electrical insulation between the two can be maintained.

Referring to FIG. 1 to FIG. 4, the touch display of this embodiment will be described below. A method of manufacturing the display device 1.

Step S01: Referring to FIG. 1, FIG. 2, and FIG. 3, this step is a preparation step for preparing the cover 2, the liquid crystal module 3, the polarizing layer 4, and the bonding electrode structure 5 for subsequent assembly procedures. Specifically, the bonding electrode structure 5 includes a detachably disposed upper surface 511 of the bonding substrate 51 in addition to the bonding substrate 51 and the first touch electrode layer 52. The release layer 53 and a lower release layer 54 detachably disposed on the lower surface 521 of the first touch electrode layer 52. In this step, the first touch electrode layer 52 of the bonded electrode structure 5 can cover the bonding substrate 51 with a liquid conductive material containing a conductive polymer or a nano metal or the like by coating or printing. Further formed by a curing treatment. Therefore, in this preparation step, the first touch electrode layer 52 is still in a complete thin film state, and is not subjected to a patterning process.

Step S02: Referring to FIG. 2 and FIG. 4, in this step, the bonding substrate 51 to which the electrode structure 5 is bonded is adhered to the upper surface 41 of the polarizing layer 4, and the first touch electrode layer 52 of the electrode structure 5 is bonded. Perform patterning. In addition, this step also prepares the second touch electrode layer 6 on the lower surface 21 of the cover 2. Regarding the processing procedure for bonding the electrode structure 5, the present embodiment will be described in detail in the subsequent paragraphs. Regarding the second touch electrode layer 6, in this embodiment, the indium tin oxide is formed by a coating technique, and patterned by a process technique such as lithography or etching, so that the second touch electrode layer 6 forms an electrode. structure.

Step S03: Referring to FIG. 1, FIG. 2, and FIG. 4, after the foregoing steps S01 and S02 are completed, the cover plate provided with the second touch electrode layer 6 is to be disposed in this step. 2. The polarizing layer 4 with the electrode structure 5 and the liquid crystal module 3 are sequentially laminated and adhered through the first adhesive layer 71 and the second adhesive layer 72 to bond the electrode structure 5 and the second touch electrode layer. 6 is located between the cover 2 and the polarizing layer 4 to complete the fabrication of the touch display device 1. Needless to say, the touch display device 1 further includes a structure such as a conductive line or a light shielding layer (not shown), and may be fabricated in the above-described step S01 or step S02.

It should be noted that, in the above manufacturing step, the bonding electrode structure 5 is adhered to the upper surface 41 of the polarizing layer 4 by the bonding substrate 51 by the heating and pressing steps, and the second touch electrode layer 6 is borrowed. The second touch electrode layer 6 may be formed on the lower surface 42 of the polarizing layer 4 or the upper surface 31 of the liquid crystal module 3 in step S02 by a plating or etching technique. Alternatively, in step S02, the bonding electrode structure 5 may be adhered to the lower surface 21 of the cover 2, the lower surface 42 of the polarizing layer 4, or the upper surface 31 of the liquid crystal module 3 by the bonding substrate 51, and the second contact The control electrode layer 6 is disposed on the lower surface 21 of the cover plate 2, the upper surface 41 of the polarizing layer 4, the lower surface 42 of the polarizing layer 4, or the upper surface 31 of the liquid crystal module 3 without overlapping the position of the bonding electrode structure 5. Thus, the production of the touch display device 1 can be completed.

Referring to Fig. 5 through Fig. 8, the processing of the bonding electrode structure 5 in step S02 will be described below.

Steps S11 and S12: Referring to FIG. 3, FIG. 5 and FIG. 6, these steps are the step of adhering the electrode structure 5 and the step of illuminating the first touch electrode layer 52.

In step S11, the upper release layer 53 is separated from the upper surface 511 of the bonding substrate 51, and the bonded electrode structure 5 is further added. The upper surface 41 of the polarizing layer 4 is attached to the heat and pressure. In this embodiment, the pressure applied by the pressurization treatment is 3.5 MPa, and the process ambient temperature is 110 degrees Celsius. Such a process condition enables the adhesive substrate of the silicone or acrylic material to be adhered after melting. And attached to the polarizing layer 4 after cooling. However, in this step, the temperature range of the heat treatment may be set between 100 degrees Celsius and 140 degrees Celsius, and the pressure range of the pressure treatment may be set between 2.5 MPa and 5.0 MPa, such processes The condition range can effectively perform the adhesion process of step S11 and maintain good process yield.

In step S12, the bonding electrode structure 5 is mainly subjected to partial exposure processing according to a predetermined pattern, so that the first touch electrode layer 52 forms a curing pattern in the corresponding pattern region.

Specifically, in this step, the electrode pattern of the first touch electrode layer 52 is defined by a mask 73. The mask 73 includes a plurality of transparent regions (white blocks in the figure) and a plurality of opaque regions ( In the black block in the figure, the exposure pattern can be defined by the light transmissive area. Since both the bonding substrate 51 and the first touch electrode layer 52 of the present embodiment have an oxygen-suppressing photosensitive property, the two surfaces of the bonding substrate 51 are covered by the first touch electrode layer 52 and the polarizing layer 4, respectively. When both surfaces of the touch electrode layer 52 are covered by the bonding substrate 51 and the lower release layer 54, the bonding substrate 51 and most of the first touch electrode layer 52 are not directly in contact with the air. The oxygen component in the ultraviolet light (for example, ultraviolet light having a wavelength of 365 nm) is transmitted through the light-transmitting region of the mask 73, and then the two regions corresponding to the light-transmitting regions are cured after exposure. , but the area corresponding to the opaque area remains uncured, and the first touch electrode layer A cured electrode pattern is defined on 52.

Steps S13 and S14: Referring to FIG. 3, FIG. 5, and FIG. 7, these steps mainly involve performing a full-face exposure curing treatment on the bonded substrate 51.

In step S13, the lower release layer 54 is first separated from the lower surface 521 of the first touch electrode layer 52, which exposes the first touch electrode layer 52 to the air. Subsequently, in step S14, the bonded electrode structure 5 is subjected to a full-surface exposure treatment to cure the entire bonded substrate 51 by light. In this step, although the first touch electrode layer 52 is also subjected to the full-surface exposure irradiation, due to its oxygen-suppressing property, even if it is exposed to the entire surface ultraviolet light in an oxygen-containing environment, the whole is not generated. The curing reaction is maintained, but is maintained in the cured state of step S12. Therefore, after the step S14 is completed, the overall curing process of the bonding substrate 51 can be completed comprehensively, and the first touch electrode layer 52 is maintained in the cured state of step S12.

Steps S15, S16: Referring to FIG. 5 and FIG. 8, these steps are intended to complete the patterning processing procedure of the first touch electrode layer 52. In step S15, the first touch electrode layer 52 can be specifically formed into an electrode pattern by dissolving the uncured portion of the first touch electrode layer 52 by a chemical agent such as a developer. The bonded substrate 51 is subjected to the entire surface exposure curing treatment of the step S13, and the structure is not removed by the developer in this step. Subsequently, the laminated electrode structure 5 can be subjected to a full-surface exposure process in step S16 to complete the final fabrication process.

It can be seen from the foregoing steps S11 to S16 that the oxidative photosensitive property of the bonding substrate 51 and the first touch electrode layer 52 can be easily penetrated. The overexposure and development process completes the patterning process of the first touch electrode layer 52, and does not require additional etching processing on the first touch electrode layer 52, which can effectively simplify the process steps and improve the process yield. However, the patterning process of the first touch electrode layer 52 may also be performed in different manners according to different needs, and is not limited to the content disclosed herein.

Second embodiment

Referring to FIG. 9, a second embodiment of the touch display device 1 of the present invention is shown. The main difference between the present embodiment and the first embodiment is that the touch display device 1 includes two bonding electrode structures. This embodiment is referred to as the first bonding electrode structure 5 and the second bonding electrode structure 8, respectively. The first bonding electrode structure 5 includes a first bonding substrate 51 and a first touch electrode layer 52 disposed on the first bonding substrate 51. The second bonding electrode structure 8 includes a first bonding electrode structure 8 The second bonding substrate 81 and the second touch electrode layer 82 are disposed on the second bonding substrate 81.

In this embodiment, the touch display device 1 replaces the second touch electrode layer 6 in the first embodiment with the second bonding electrode structure 8. Therefore, the first bonding electrode structure in this embodiment is used. 5 is opposite to the second bonding electrode structure 8 in the first embodiment. For example, here, the touch display device 1 is to attach the first bonding electrode structure 5 from the first bonding substrate 51 to the lower surface 42 of the polarizing layer 4, and the second bonding electrode structure 8 is The second bonding substrate 81 is attached to the upper surface 31 of the liquid crystal module 3.

However, depending on different needs, the positions of the first bonding electrode structure 5 and the second bonding electrode structure 8 can be adjusted correspondingly. For example, when the first fit When the electrode structure 5 is disposed on the lower surface 42 of the polarizing layer 4, the second bonding electrode structure 8 may also be attached to the lower surface 21 of the cover 2 or the upper surface 41 of the polarizing layer 4. When the first bonding electrode structure 5 is attached to the lower surface 21 of the cover 2 by the first bonding substrate 51, the second bonding electrode structure 8 can be attached to the upper surface 41 of the polarizing layer 4, and the polarizing layer. The lower surface 42 of the 4 or the upper surface 31 of the liquid crystal module 3. When the first bonding electrode structure 5 is attached to the upper surface 41 of the polarizing layer 4, the second bonding electrode structure 8 can be attached to the lower surface 21 of the cover 2, the lower surface 42 of the polarizing layer 4, or the liquid crystal module. The upper surface 31 of 3. When the first bonding electrode structure 5 is disposed on the upper surface 31 of the liquid crystal module 3, the second bonding electrode structure 8 may be attached to the lower surface 21 of the cover 2, the upper surface 41 of the polarizing layer 4, or the polarizing layer 4. Lower surface 42. Therefore, according to the above embodiment, the different manners of the first bonding electrode structure 5 and the second bonding electrode structure 8 can provide the touch sensing signal, and realize the slim design of the touch display device 1.

Referring to Figures 9, 10 and 11, a method of manufacturing the touch display device 1 of the second embodiment will be described below.

Step S21: This step is similar to the foregoing step S01. In the pre-preparation step, the cover 2, the liquid crystal module 3, the polarizing layer 4, the first bonding electrode structure 5, and the second bonding electrode structure 8 are separately prepared in advance. Similar to the first embodiment, the first bonding electrode structure 5 further includes a first upper release layer and a first lower release layer (not shown), and the second bonding electrode structure 8 further includes a non-illustrated The second upper release layer and the second upper release layer are shown.

Step S22: This step is similar to step S02, and the adhesion process of the first bonding electrode structure 5 and the second bonding electrode structure 8 is performed separately, and is divided into The first touch electrode layer 52 of the first bonding electrode structure 5 and the second touch electrode layer 82 of the second bonding electrode structure 5 are patterned, as shown in FIG.

In this step, the process conditions for the pressurization and warming adhesion treatment of the first bonded electrode structure 5 and the second bonded electrode structure 8 are as described above, and will not be described herein. The patterning processing steps of the first bonding electrode structure 5 and the second bonding electrode structure 8 are similar to the processes of the foregoing steps S11 to S16, using the first bonding substrate 51 and the first touch electrode layer 52. The second bonding substrate 81 and the second touch electrode layer 82 respectively perform the patterning treatment on the first touch electrode layer 52 and the second touch electrode layer 82, and the content is no longer Repeat the instructions.

Step S23: This step is similar to step S03, in which the cover 2, the polarizing layer 4 provided with the first bonding electrode structure 5, and the liquid crystal module 3 provided with the second bonding electrode structure 8 are sequentially adhered by the first bonding. The layer 71 and the second adhesive layer 72 are stacked to complete the assembly of the touch display device 1 of the second embodiment.

According to the foregoing two embodiments, the touch display device 1 of the present invention simplifies the process steps by the arrangement of the bonding electrode structure, and can avoid the implementation of the high temperature process and the etching process during the manufacturing process, thereby improving the process yield. In addition, the bonding electrode structure can directly provide adhesion by the bonding substrate, and is not limited by the adhesive properties of the general optical adhesive, and is suitable for the production of the large-sized touch display device 1. Therefore, the touch display device 1 of the present invention and the manufacturing method thereof can achieve the object of the present invention.

However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the present invention to the present invention. The simple equivalent changes and modifications made in the scope of patent application and the contents of the patent specification are still within the scope of this new patent.

1‧‧‧Touch display device

2‧‧‧ Cover

21‧‧‧ Lower surface

3‧‧‧LCD Module

31‧‧‧ upper surface

4‧‧‧ polarizing layer

41‧‧‧ upper surface

42‧‧‧ lower surface

5‧‧‧Fixed electrode structure

51‧‧‧Material substrate

52‧‧‧First touch electrode layer

6‧‧‧Second touch electrode layer

71‧‧‧First adhesive layer

72‧‧‧Second Adhesive Layer

Claims (22)

A touch display device comprising: a cover plate having a light transmissive property and a lower surface; a liquid crystal module disposed at intervals between the cover plate and having an upper surface, the upper surface of the liquid crystal module and the cover plate a lower polarizing layer disposed between the cover plate and the liquid crystal module and having an upper surface and a lower surface on opposite sides, the lower surface of the cover plate being opposite to the upper surface of the polarizing layer; The laminated electrode structure is disposed between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal module, and includes a bonding substrate, which has electrical insulation and heat adhesion, and a first a touch electrode layer disposed on a surface of the bonding substrate; and a second touch electrode layer disposed between the cover plate and the polarizing layer or disposed on the polarizing layer and the liquid crystal module And electrically insulated from the first touch electrode layer. The touch display device of claim 1, wherein the bonding substrate of the bonding electrode structure is attached to the lower surface of the cover, such that the first touch electrode layer is located on the cover and the polarizing The second touch electrode layer is disposed on the upper surface of the polarizing layer, the lower surface of the polarizing layer, or the upper surface of the liquid crystal module. The touch display device of claim 1, wherein the bonding substrate of the bonding electrode structure is attached to the upper surface of the polarizing layer, and the first touch electrode layer is located on the cover and the polarizing Between layers; the second touch electrode The layer is disposed on a lower surface of the cover, a lower surface of the polarizing layer or an upper surface of the liquid crystal module. The touch display device of claim 1, wherein the bonding substrate of the bonding electrode structure is attached to a lower surface of the polarizing layer, such that the first touch electrode layer is located at the polarizing layer and the liquid crystal The second touch electrode layer is disposed on a lower surface of the cover, an upper surface of the polarizing layer or an upper surface of the liquid crystal module. The touch display device of claim 1, wherein the bonding substrate of the bonding electrode structure is attached to the upper surface of the liquid crystal module, such that the first touch electrode layer is located on the polarizing layer and the The second touch electrode layer is disposed on a lower surface of the cover, an upper surface of the polarizing layer or a lower surface of the polarizing layer. The touch display device of claim 1, wherein the first touch electrode layer is made of a liquid conductive material containing a conductive polymer material or a nano metal material. The touch display device of claim 6, wherein the first touch electrode layer has an oxygen-stable photo-curing property. The touch display device of claim 1, wherein the main material of the bonding substrate is silicone or acrylic. The touch display device according to claim 1, wherein the heat-adhesive property of the bonded substrate is mainly exhibited between 100 degrees Celsius and 140 degrees Celsius. The touch display device of claim 9, wherein the bonding substrate further has photosensitive curing properties. The touch display device of claim 1, further comprising: a second polarized light The polarizing layer is perpendicular to the polarization direction of the second polarizing layer, and the liquid crystal module is disposed between the polarizing layer and the second polarizing layer. A touch display device comprising: a cover plate having a light transmissive property and a lower surface; a liquid crystal module disposed at intervals between the cover plate and having an upper surface, the upper surface of the liquid crystal module and the cover plate a lower polarizing layer disposed between the cover plate and the liquid crystal module and having an upper surface and a lower surface on opposite sides, the lower surface of the cover plate being opposite to the upper surface of the polarizing layer; The first bonding electrode structure is disposed between the cover plate and the polarizing layer or between the polarizing layer and the liquid crystal module, and includes a first bonding substrate, which has electrical insulation and heat adhesion. And a first touch electrode layer disposed on a surface of the first bonding substrate; and a second bonding electrode structure disposed between the cover plate and the polarizing layer or disposed on the polarizing layer And the liquid crystal module is electrically insulated from the first bonding electrode structure, and includes a second bonding substrate, electrically insulating and heat-adhesive, and a second touch electrode layer. And disposed on the second bonding substrate. The touch display device of claim 12, wherein the first bonding substrate of the first bonding electrode structure is attached to a lower surface of the cover, such that The first touch electrode layer is disposed between the cover plate and the polarizing layer; the second bonding substrate of the second bonding electrode structure is attached to the surface of the first touch electrode layer and the upper surface of the polarizing layer The lower surface of the polarizing layer or the upper surface of the liquid crystal module. The touch display device of claim 12, wherein the first bonding substrate of the first bonding electrode structure is attached to the upper surface of the polarizing layer such that the first touch electrode layer is located on the cover Between the plate and the polarizing layer; the second bonding substrate of the second bonding electrode structure is attached to the lower surface of the cover, the lower surface of the polarizing layer or the upper surface of the liquid crystal module. The touch display device of claim 12, wherein the first bonding substrate of the first bonding electrode structure is attached to a lower surface of the polarizing layer, such that the first touch electrode layer is located in the polarizing Between the layer and the liquid crystal module; the second bonding substrate of the second bonding electrode structure is attached to the lower surface of the cover, the upper surface of the polarizing layer or the upper surface of the liquid crystal module. The touch display device of claim 12, wherein the first bonding substrate of the first bonding electrode structure is attached to the upper surface of the liquid crystal module, such that the first touch electrode layer is located Between the polarizing layer and the liquid crystal module; the second bonding substrate of the second bonding electrode structure is attached to the lower surface of the cover, the upper surface of the polarizing layer or the lower surface of the polarizing layer. The touch display device of claim 12, wherein the first touch electrode layer and the second touch electrode layer are made of a liquid conductive material containing a conductive polymer material or a nano metal material. The touch display device of claim 17, wherein the first touch electrode layer and the second touch electrode layer have an oxygen-suppressing and photo-curing property. The touch display device of claim 12, wherein the first bonding substrate and the second bonding substrate are made of silicone or acrylic. The touch display device of claim 12, wherein the heat adhesion of the first bonding substrate to the second bonding substrate is mainly between 100 degrees Celsius and 140 degrees Celsius. The touch display device of claim 12, wherein the first bonding substrate and the second bonding substrate further have photosensitive curing properties. The touch display device of claim 12, further comprising: a second polarizing layer, the polarizing layer is perpendicular to a polarization direction of the second polarizing layer, and the liquid crystal module is disposed on the polarizing layer and the second polarizing layer Between the layers.