TW201537404A - Touch display device and manufacturing method thereof - Google Patents

Abstract

A touch display device includes a touch panel, a display panel, an isolation structure, an optical clear adhesive layer and a support structure. The display panel is opposite to the touch panel. The display panel includes an upper substrate and a lower substrate disposed opposite to the upper substrate. The lower substrate has a peripheral region uncovered by the upper substrate along a vertical projective direction. The isolation structure is disposed on the touch panel and disposed between the touch panel and the display panel. The optical clear adhesive layer is at least partially disposed between the touch panel and the upper substrate so as to combine the touch panel and the display panel. The isolation structure surrounds the optical clear adhesive layer. The support structure is disposed between the touch panel and the peripheral region of the lower substrate.

Description

Touch display device and manufacturing method thereof

The present invention relates to a touch display device and a method of fabricating the same, and more particularly to a touch display device for forming a support structure between a region of a display panel that is not covered by the upper substrate and the touch panel, and a manufacturing method thereof .

Touch sensing technology has developed rapidly in recent years, and many consumer electronic products with touch functions have been launched. In such products, the original display panel area is mainly given the function of touch sensing, and the original simple display panel is converted into a touch display panel with touch recognition function. According to the structural design of the touch display panel, it can be generally divided into an out-cell and an in-cell/on-cell touch display panel. The external touch display panel is formed by combining a separate touch panel with a general display panel. Whether it is between the external touch panel and the display panel, between the in-cell touch display panel and the cover lens, or between the cover plate and the general touch panel, the bonding process is used to achieve the bonding. the goal of.

At present, the more common laminating process in the industry uses solid optical adhesives for lamination. However, the solid optical adhesive has a limited ability to fill the surface of the module to be bonded, and has an adverse effect on the appearance quality and electrical operation.

One of the main purposes of the present invention is to provide a touch display device and a method for fabricating the same, which use a spacer structure to bond a touch panel and a display panel with a liquid optical adhesive, thereby achieving the purpose of improving the bonding effect and product quality. In addition, the present invention is not covered by the upper substrate in the display panel. A support structure is formed between the area of the lower substrate and the touch panel, thereby enhancing the structural strength of the lower substrate protruding from the upper substrate in the display panel, thereby achieving the effects of improving product reliability and process yield.

To achieve the above objective, an embodiment of the present invention provides a touch display device including a touch panel, a display panel, a spacer structure, an optical adhesive layer, and a support structure. The display panel is opposite to the touch panel, and the display panel includes an upper substrate and a lower substrate. The lower substrate is disposed opposite to the upper substrate, the lower substrate has a surrounding area, and the surrounding area does not overlap the upper substrate in a vertical projection direction. The spacer structure is disposed on the touch panel and located between the touch panel and the display panel. The optical adhesive layer is at least partially disposed between the touch panel and the upper substrate for bonding the touch panel and the display panel. The spacer structure surrounds the optical glue layer. The support structure is disposed between the surrounding area of the lower substrate and the touch panel.

Another embodiment of the present invention provides a touch display device in which a support structure directly contacts a peripheral area of a touch panel and a lower substrate.

Another embodiment of the present invention provides a touch display device in which a support structure and an optical adhesive layer are disposed apart from each other.

Another embodiment of the present invention provides a touch display device in which a support structure and an optical adhesive layer are integrally formed of the same material.

Another embodiment of the present invention provides a touch display device in which a support structure and an optical adhesive layer are formed of different materials.

Another embodiment of the present invention provides a touch display device, wherein the spacer structure includes at least one first retaining wall and at least one second retaining wall are disposed apart from each other, the first retaining wall directly contacts the display panel, and the second retaining wall Separating from the display panel, the first retaining wall and the second retaining wall have a first gap, and the optical adhesive layer is connected to the supporting structure through the first gap.

Another embodiment of the present invention provides a touch display device, wherein the spacer structure includes at least one first retaining wall and a plurality of second retaining walls are disposed apart from each other, the first retaining wall directly contacts the display panel, and the second retaining wall Separated from the display panel, with a second between the two adjacent second retaining walls The gap and the optical adhesive layer are connected to the support structure through the second gap.

Another embodiment of the present invention provides a touch display device, wherein the spacer structure includes at least one first retaining wall and at least one second retaining wall are disposed apart from each other, the first retaining wall directly contacts the display panel, and the second retaining wall It is separated from the display panel.

Another embodiment of the present invention provides a touch display device, wherein a first gap is formed between the first retaining wall and the second retaining wall, and the optical adhesive layer is connected to the supporting structure through the first gap.

Another embodiment of the present invention provides a touch display device, wherein the spacer structure includes a plurality of second retaining walls, a second gap is formed between two adjacent second retaining walls, and the optical adhesive layer passes through the second gap. Connected to the support structure.

Another embodiment of the present invention provides a touch display device in which a first barrier wall extends to one side of a touch panel.

Another embodiment of the present invention provides a touch display device, wherein the second retaining wall overlaps the surrounding area of the lower substrate in a vertical projection direction, and the second retaining wall has a vertical projection direction on a peripheral area of the lower substrate. A projection pattern.

Another embodiment of the present invention provides a touch display device, wherein a distance between a projection pattern and a side of a surrounding area of the lower substrate is greater than or equal to 0.5 mm.

Another embodiment of the present invention provides a touch display device, wherein the display panel further includes a first control element disposed on a peripheral area of the lower substrate.

Another embodiment of the present invention provides a touch display device in which a projection pattern is located between a first control element and an upper substrate.

Another embodiment of the present invention provides a touch display device, wherein the display panel further includes a second control element disposed on a peripheral area of the lower substrate, and the second control element is disposed between the upper substrate and the first control element. .

Another embodiment of the present invention provides a touch display device in which a projection pattern is located between a first control element and a second control element.

Another embodiment of the present invention provides a touch display device in which a projection pattern is tied Between the upper substrate and the second control element.

Another embodiment of the present invention provides a touch display device, wherein the display panel further includes an outer frame and a backlight module. The outer frame has an accommodation space. The backlight module is disposed in the accommodating space of the outer frame, wherein the lower substrate is disposed in the accommodating space, and the backlight module is disposed between the lower substrate and the outer frame.

Another embodiment of the present invention provides a touch display device, wherein the touch panel includes a cover plate and a touch element. The cover plate has a light transmissive area and a decorative area, and the decorative area is located on at least one side of the light transmissive area. The touch element is at least partially disposed corresponding to the light transmissive area.

Another embodiment of the present invention provides a touch display device in which a touch element is at least partially disposed on a cover sheet.

Another embodiment of the present invention provides a touch display device, further comprising a first opposite substrate and a cover plate, wherein the touch elements are at least partially disposed on the first opposite substrate.

Another embodiment of the present invention provides a touch display device, further comprising a second opposite substrate disposed corresponding to the first opposite substrate, wherein the first opposite substrate is disposed between the cover plate and the second opposite substrate The touch component is partially disposed on the first opposite substrate and partially disposed on the second opposite substrate.

Another embodiment of the present invention provides a touch display device in which a touch element includes a plurality of touch electrodes electrically insulated from each other.

Another embodiment of the present invention provides a touch display device, wherein each touch electrode includes at least one of a transparent conductive material, a metal material, conductive particles, a carbon nanotube, or a nano silver wire.

Another embodiment of the present invention provides a touch display device, wherein the transparent conductive material includes at least one of graphene, decene, indium tin oxide, indium zinc oxide, and aluminum zinc oxide.

Another embodiment of the present invention provides a touch display device, wherein the metal material comprises at least one of aluminum, copper, silver, chromium, titanium, molybdenum and tantalum, aluminum, copper, silver, chromium, titanium, molybdenum or niobium. Composite layer or alloy.

Another embodiment of the present invention provides a touch display device in which each touch electrode is in a grid shape, and the grid of each touch electrode is a single layer or a plurality of layers of metal materials, and the line width of the grid is between Between 0.8 micrometers (μm) and 10 micrometers.

Another embodiment of the present invention provides a touch display device, wherein the touch electrode includes at least one touch signal driving electrode and at least one touch signal receiving electrode.

Another embodiment of the present invention provides a touch display device, wherein the touch element includes a plurality of first axial electrodes and a plurality of second axial electrodes. The first axial electrode extends along a first direction. The second axial electrode extends along a second direction, wherein the second axial electrode is electrically insulated from the first axial electrode.

Another embodiment of the present invention provides a touch display device, wherein each of the first axial electrodes includes a plurality of first sub-electrodes, and at least one first connecting line is disposed between two adjacent first sub-electrodes, first The connecting wire is electrically connected to two adjacent first sub-electrodes, each second axial electrode includes a plurality of second sub-electrodes, and at least one second connecting line is disposed between two adjacent second sub-electrodes, and the second connection The wires are electrically connected to two adjacent second sub-electrodes.

To achieve the above objective, an embodiment of the present invention provides a method for fabricating a touch display device, including the following steps. First, a touch panel and a display panel are provided, wherein the display panel includes an upper substrate and a lower substrate. The lower substrate is opposite to the upper substrate. The lower substrate has a surrounding area, and the surrounding area does not overlap the upper substrate in a vertical projection direction. Next, a spacer structure is formed on the touch panel. Then, a first liquid optical glue is coated on the touch panel, wherein the spacer structure surrounds the first liquid optical glue. Thereafter, a bonding process is performed to bond the touch panel formed with the spacer structure and the first liquid optical adhesive to the display panel. Then, a curing process is performed to cure the first liquid optical adhesive to form an optical adhesive layer between the touch panel and the display panel.

Another embodiment of the present invention provides a method for fabricating a touch display device, wherein the spacer structure includes at least one first retaining wall and at least one second retaining wall separated from each other, the first retaining wall directly contacting the display panel, and the second block The wall system is separated from the display panel, and a first gap is formed between the first retaining wall and the second retaining wall.

Another embodiment of the present invention provides a method for fabricating a touch display device, further comprising: flowing a portion of the first liquid optical glue to the surrounding area through the first gap before curing, for curing on the lower substrate A support structure is formed between the surrounding area and the touch panel.

Another embodiment of the present invention provides a method of fabricating a touch display device, wherein the support structure directly contacts the touch panel and the lower substrate.

Another embodiment of the present invention provides a method of fabricating a touch display device in which a support structure is connected to an optical adhesive layer.

Another embodiment of the present invention provides a method for fabricating a touch display device, wherein the spacer structure includes a plurality of second retaining walls, and a second gap is formed between the two adjacent second retaining walls, and the optical adhesive layer is transmitted through the first The two gaps are connected to the support structure.

Another embodiment of the present invention provides a method for fabricating a touch display device, further comprising coating a second liquid optical glue on the touch panel before the bonding process.

Another embodiment of the present invention provides a method for fabricating a touch display device, wherein the second liquid optical adhesive forms a support structure between the peripheral region of the lower substrate and the touch panel after the curing process.

Another embodiment of the present invention provides a method of fabricating a touch display device in which a support structure and an optical adhesive layer are separated from each other.

Another embodiment of the present invention provides a touch display device including a cover plate, a touch element, a display panel, a spacer structure, an optical adhesive layer, and a support structure. The cover plate has a light transmitting area and a decorative area, and the decorative area is located on at least one side of the light transmitting area. The touch component is at least partially disposed corresponding to the light transmissive area. The display panel is opposite to the cover panel. The display panel includes an upper substrate and a lower substrate. The lower substrate is disposed opposite to the upper substrate. The touch component is at least partially disposed on the upper substrate. The lower substrate has a peripheral area, and the surrounding area does not overlap the upper substrate in the vertical projection direction. The spacer structure is disposed on the cover plate and located between the cover plate and the display panel. The optical adhesive layer is at least partially disposed between the cover plate and the upper substrate of the display panel for bonding the cover plate and the display panel. The spacer structure surrounds the optical adhesive layer. The support structure is disposed between the surrounding area of the lower substrate and the cover plate.

101-108‧‧‧Touch display device

110‧‧‧Touch panel

110E‧‧‧Side side of touch panel

210‧‧‧Touch panel

310‧‧‧Touch panel

410‧‧‧Touch panel

111‧‧‧ Covering board

111A‧‧‧ first side

111B‧‧‧ second side

112‧‧‧Decorative layer

113‧‧‧Touch components

113C‧‧‧Wire

113P‧‧‧Insulating components

113R‧‧‧ touch signal receiving electrode

113S‧‧‧ touch electrode

113T‧‧‧ touch signal drive electrode

113X‧‧‧first axial electrode

113Y‧‧‧second axial electrode

120‧‧‧ display panel

121‧‧‧Upper substrate

122‧‧‧lower substrate

122C‧‧‧ corner

122E‧‧‧ side

123‧‧‧ polarizer

124‧‧‧First control element

125‧‧‧Second control element

126‧‧‧ frame

126S‧‧‧ accommodating space

127‧‧‧Backlight module

130‧‧‧ interval structure

131‧‧‧First retaining wall

132‧‧‧Second retaining wall

140‧‧‧First liquid optical adhesive

141‧‧‧Optical adhesive layer

150‧‧‧Second liquid optical adhesive

211‧‧‧First counter substrate

211A‧‧‧ third side

211B‧‧‧ fourth side

212‧‧‧Second counter substrate

212A‧‧‧The fifth side

212B‧‧‧ sixth side

291‧‧‧First adhesive layer

292‧‧‧Second adhesive layer

D1‧‧‧ distance

H‧‧‧ horizontal direction

P‧‧‧ projection pattern

R1‧‧‧Light transmission area

R2‧‧‧Decorative area

R3‧‧‧ surrounding area

S‧‧‧Support structure

S110‧‧‧Steps

S120‧‧‧ steps

S130‧‧‧Steps

S140‧‧‧Steps

S150‧‧ steps

S160‧‧‧ steps

V1‧‧‧ first gap

V2‧‧‧ second gap

V3‧‧‧ third gap

X‧‧‧ first direction

X1‧‧‧ first subelectrode

X2‧‧‧ first cable

Y‧‧‧second direction

Y1‧‧‧Second subelectrode

Y2‧‧‧second cable

Z‧‧‧Vertical projection direction

FIG. 1 is a flow chart showing a method of fabricating a touch display device according to a first embodiment of the present invention.

2 to 6 are schematic views showing a method of fabricating the touch display device according to the first embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view taken along line A-A' in Fig. 6.

FIG. 8 is a schematic diagram of a self-capacitive touch element according to a first embodiment of the present invention.

FIG. 9 is a schematic diagram showing a mutual capacitive touch element according to a first embodiment of the present invention.

FIG. 10 is a schematic diagram of another mutual capacitive touch element according to the first embodiment of the present invention.

FIG. 11 is a schematic view showing another mutual capacitive touch element according to the first embodiment of the present invention.

FIG. 12 is a schematic diagram of a touch panel according to a second embodiment of the present invention.

FIG. 13 is a schematic view showing a touch panel according to a third embodiment of the present invention.

FIG. 14 is a schematic view showing a touch panel according to a fourth embodiment of the present invention.

FIG. 15 is a schematic view showing a touch display device according to a fifth embodiment of the present invention.

Fig. 16 is a schematic cross-sectional view taken along line B-B' in Fig. 15.

FIG. 17 is a schematic view showing a touch display device according to a sixth embodiment of the present invention.

Figure 18 is a schematic cross-sectional view taken along line C-C' in Figure 17.

FIG. 19 is a schematic diagram of a touch display device according to a seventh embodiment of the present invention.

20 and 21 are schematic views showing a method of fabricating the touch display device according to the eighth embodiment of the present invention.

Fig. 22 is a schematic cross-sectional view taken along line D-D' of Fig. 21.

FIG. 23 is a schematic diagram of a touch display device according to a ninth embodiment of the present invention.

Fig. 24 is a schematic cross-sectional view taken along line E-E' in Fig. 23.

Figure 25 is a schematic view showing a touch display device according to a tenth embodiment of the present invention.

Figure 26 is a schematic view showing a touch display device according to an eleventh embodiment of the present invention.

The present invention will be described in detail with reference to the preferred embodiments of the invention,

As shown in FIG. 1 to FIG. 7 , a first embodiment of the present invention provides a method for fabricating a touch display device, including the following steps. First, as shown in FIG. 1 to FIG. 3, step S110 is performed to provide a touch panel 110 and a display panel 120. The touch panel 110 has a light transmissive area R1 and a decorative area R2, and the decorative area R2 is located on at least one side of the light transmissive area. In the present embodiment, the decorative area R2 preferably surrounds the light transmitting area R1, but is not limited thereto. The display panel 120 includes an upper substrate 121 and a lower substrate 122. The lower substrate 122 is disposed opposite to the upper substrate 121, and the area of the upper and lower substrates 122 is larger than the area of the upper substrate 121 in a vertical projection direction. The vertical projection direction Z is substantially orthogonal to the upper substrate 121 or/and the lower substrate 122, but is not limited thereto. The lower substrate 122 has a peripheral region R3, and the peripheral region R3 is not overlapped with the upper substrate 121 in the vertical projection direction Z. In other words, the upper substrate 121 is disposed on the lower substrate 122 and exposes the peripheral region R3 of the lower substrate 122. It should be noted that the display panel 120 of the embodiment may include a liquid crystal display panel, an organic light emitting diode (OLED) display panel, an electro-wetting display panel, an e-ink display panel, and an electric A plasma display panel, a field emission (FED) display panel, or other suitable display panel. For example, when the display panel 120 is a liquid crystal display panel, the upper substrate 121 can be a color filter substrate, the lower substrate 122 can be an array substrate, and a liquid crystal material can be interposed between the upper substrate 121 and the lower substrate 122. (not shown), but not limited to this. In addition, a polarizer 123 may be disposed on the outer side of the upper substrate 121 or/and the lower substrate 122 as needed. In this embodiment, the display panel 120 further includes a first control component 124 and a second control component 125 disposed on the peripheral region R3 of the lower substrate 122, and the second control component 125 is disposed on the upper substrate 121 and the second Between a control element 124. The first control component 124 can include a flexible printed circuit (FPC) or a chip on film (COF) provided with a chip package, and the second control component can include a Integrated circuit (IC), but not limited to this.

Next, as shown in FIG. 1 and FIG. 4, step S120 is performed to form a spacer structure 130 on the touch panel 110. The spacer structure 130 preferably surrounds the light transmissive region R1, but is not limited thereto. The spacing structure 130 can include at least one first retaining wall 131 and at least one second retaining wall 132 disposed apart from each other. For example, the spacing structure 130 of the embodiment is composed of three first retaining walls 131 and one second retaining wall 132. The second retaining wall 132 has a first space between the adjacent retaining walls 131 and the adjacent first retaining wall 131. The gap V1 has a third gap V3 between the two adjacent first retaining walls 131, but is not limited thereto. It should be noted that the first retaining wall 131 and the second retaining wall 132 of the embodiment may be cured or semi-cured by forming a liquid optical glue after being dispensed and cured, but not limit. The above liquid optical glue may include acrylic glue, silicone rubber or other suitable liquid optical glue. Further, the above curing treatment may include a heat curing treatment, an ultraviolet curing treatment, or other suitable curing treatment.

Then, as shown in FIG. 1 and FIG. 5, step S130 is performed to apply a first liquid optical adhesive 140 to a region of the touch panel 110 surrounded by the spacer structure 130. In other words, the spacer structure 130 surrounds the first liquid optical glue 140. In this embodiment, the first liquid optical adhesive 140 can be applied to the touch panel 110 in a full-face or pattern manner. The first liquid optical glue 140 may comprise acrylic glue, silicone rubber or other suitable liquid optical glue.

Then, as shown in FIG. 1 , FIG. 6 and FIG. 7 , step S140 is performed to perform a bonding process, and the touch panel 110 and the display panel 120 are formed with the spacer structure 130 and the first liquid optical adhesive 140 . fit. Then, in step S150, a curing process is performed to cure the first liquid optical adhesive 140 to form an optical adhesive layer 141 between the touch panel 110 and the display panel 120. The curing treatment described above may include a heat curing treatment, an ultraviolet curing treatment, or other curing treatment suitable for the material properties of the first liquid optical adhesive 140. It should be noted that the first retaining wall 131 directly contacts the display panel 120, and the second retaining wall 132 is separated from the display panel 120. In addition, the second retaining wall 132 is overlapped with the peripheral region R3 of the lower substrate 122 in the vertical projection direction Z, and the second retaining wall 132 has a projection pattern on the peripheral region R3 of the lower substrate 122 along the vertical projection direction Z. P, and the projection pattern P is located between the first control element 124 and the second control element 125 in a horizontal direction H, but the invention is not limited thereto. For example, when the display panel 120 has only the first control element 124 and the second control element 125 is not provided, the projection pattern P can be regarded as being located between the first control element 124 and the upper substrate 121 in the horizontal direction H. In other words, the second retaining wall 132 is disposed corresponding to the peripheral region R3 of the lower substrate 122 and is not in contact with the lower substrate 122, so the gap between the second retaining wall 132 and the lower substrate 122 and the second retaining wall 132 and A first gap V1 between the retaining walls 131 may be used to overflow the first liquid optical glue 140 to the surrounding region R3. Therefore, the manufacturing method of the embodiment may further include: partially depositing a portion of the first liquid optical adhesive 140 through the first gap V1 to the surrounding region R3 before the curing process, for performing the curing process on the lower substrate 122. A support structure S is formed between the surrounding area R3 and the touch panel 110.

The supporting structure S is preferably in contact with the surrounding area R3 of the touch panel 110 and the lower substrate 122 to enhance the structural strength of the area of the lower substrate 122 not covered by the upper substrate 121, but is not limited thereto. The support structure S preferably has a moderate elasticity to provide a cushioning effect of the lower substrate 122. The optical adhesive layer 141 and the support structure S of the present embodiment preferably fill the space between the peripheral region R3 of the lower substrate 122 and the touch panel 121, but the invention is not limited thereto. In other embodiments of the present invention, only the support structure S or/and the optical adhesive layer 141 may be disposed at the corner 122C of the peripheral region R3 of the lower substrate 122 to achieve the desired effect of increasing structural strength. In addition, in order to smoothly overflow the first liquid optical adhesive 140 to the surrounding area R3, the distance D1 between the projection pattern P of the second retaining wall 132 on the lower substrate 122 and one side 122E of the surrounding area R3 of the lower substrate 122 Preferably, the first retaining wall 131 extends to one side 110E of the touch panel 110 for guiding the liquid optical adhesive 140 to overflow to the side 110E of the surrounding area R3, but Not limited to this. Since the optical adhesive layer 141 and the support structure S of the embodiment are formed by curing the first liquid optical adhesive 140, the optical adhesive layer 141 can be connected to the support structure S through the first gap V1, but the present invention does not This is limited. In other embodiments of the present invention, the optical adhesive layer 141 and the support structure S may be separately formed by different materials as needed. In addition, as shown in FIG. 1 and FIG. 6, the manufacturing method of this embodiment may also selectively perform step S160 after step S150. The first liquid optical glue 140 overflows through the third gap V3, but is not limited thereto.

Through the above-described manufacturing method, the touch display device 101 as shown in FIGS. 6 and 7 can be formed. The touch display device 101 of the present embodiment includes a touch panel 110, a display panel 120, a spacer structure 130, an optical adhesive layer 141, and a support structure S. The display panel 120 is disposed opposite to the touch panel 110. The display panel 120 includes an upper substrate 121 and a lower substrate 122. The lower substrate 122 is disposed opposite to the upper substrate 121, the lower substrate 122 has a peripheral region R3, and the peripheral region R3 does not overlap the upper substrate 121 in the vertical projection direction Z. The spacer structure 130 is disposed on the touch panel 110 and located between the touch panel 110 and the display panel 120 . The optical adhesive layer 141 is disposed at least partially between the touch panel 110 and the upper substrate 121 for bonding the touch panel 110 and the display panel 120. The spacer structure 130 surrounds the optical adhesive layer 141. The support structure S is disposed between the peripheral region R3 of the lower substrate 122 and the touch panel 110. The installation position and material characteristics of the respective members have been described in the above-described production methods, and thus will not be described herein. It should be noted that the spacer structure 130 of the present invention is formed on the touch panel 110. Compared with the manufacturing method of forming the spacer structure 130 on the display panel 120, the design of the present invention can avoid the process of the spacer structure 130 being avoided. The influence of the rework time on the display panel 120, and due to the trend of the current display panel toward the narrow border, the difficulty in forming the spacer structure 130 on the display panel 120 is greatly improved, so the production of the present invention The method can have the effects of improving process yield and reducing cost. In addition, the bonding method of the present invention utilizes the characteristics that the first liquid optical adhesive 140 has a better height-filling capability, thereby improving the bonding condition and improving the appearance and electrical quality of the touch display device 101. The support structure S in the peripheral region R3 can enhance the structural strength of the region of the lower substrate 122 protruding beyond the upper substrate 121 under the process conditions using the liquid optical glue. In addition, the support structure S of the embodiment is a part of the optical adhesive layer 141, so the support structure S and the optical adhesive layer 141 are formed of the same material and integrally formed.

As shown in FIG. 7 , the touch panel 110 of the present embodiment may include a cover board 111 and a touch element 113 . The cover plate 113 has the above-mentioned light transmitting region R1 and the decorative region R2, and the decorative region R2 is located on at least one side of the light transmitting region R1. The cover plate 111 may include a glass substrate, a plastic substrate, a sapphire substrate, or a transparent ceramic substrate. When the cover plate is a plastic substrate, it may be a base of a single layer material. The board is a substrate formed by stacking two or more different materials, wherein the material may be selected from the group consisting of polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), Polycarbonate (PC), methyl methacrylate (PMMA), polyimide (PI), Cycloolefin polymer (COP), such as PMMA and PC A double-layer material stacked cover plate. When the cover plate is a glass substrate, the glass substrate can be a tempered glass that is chemically or physically strengthened, so that the glass substrate can have high mechanical strength to protect the touch element 113 and the matched display, and the thickness of the cover plate can be between Between 0.25 mm and 2 mm. The cover plate 111 has a first surface 111A and a second surface 111B, and the second surface 111B is opposite to the first surface 111A. In addition, the touch panel 110 may further include a decorative layer 112 disposed on the first surface 110A of the cover plate 111 and located in the decorative area R2 for forming a decorative effect on one side of the second surface 111B of the cover plate 111. The touch element 113 is disposed on the first surface 111A of the cover plate 111 and at least partially disposed corresponding to the light transmissive area R1. In other words, the touch element 113 can also be partially disposed on the decorative layer 112 of the decorative area R2, but not limited thereto. In other embodiments, the touch element 113 can also be disposed on the display panel 120. On the upper substrate 121.

For further explanation of the touch element 113 of the present embodiment, please refer to FIGS. 8 to 11 . As shown in FIG. 8, the touch element 113 of the present embodiment may include a plurality of touch electrodes 113S and a plurality of wires 113C. Each of the wires 113C is electrically connected to the corresponding touch electrode 113S. Each of the touch electrodes 113S is electrically insulated from each other for performing a self-capacitance touch detection, but is not limited thereto. The shape of each touch electrode 113S may be a rectangle, a diamond, a triangle, or other suitable geometric shape. In addition, as shown in FIG. 9, the touch electrode 113S may include at least one touch signal driving electrode 113T and at least one touch signal receiving electrode 113R disposed apart from each other for performing a mutual capacitance touch. Detection, but not limited to this.

As shown in FIG. 10, the touch element 113 may further include a plurality of first axial electrodes 113X and a plurality of second axial electrodes 113Y. The first axial electrode 113X extends along a first direction X, and the second axial electrode 113Y extends along a second direction Y. The first axial electrode 113X The second axial electrodes 113Y are at least partially overlapped with each other in the vertical projection direction Z, and the second axial electrodes 113Y are electrically insulated from the first axial electrodes 113X. The first direction X is preferably substantially perpendicular to the second direction Y, but is not limited thereto. The first axial electrode 113X and the second axial electrode 113Y are respectively a touch signal driving electrode or a touch signal receiving electrode, which are used for mutual capacitive touch detection, but are not limited thereto. . An insulating member 113P may be disposed between the first axial electrode 113X and the second axial electrode 113Y for electrically isolating the first axial electrode 113X and the second axial electrode 113Y, but the present invention does not limit. The insulating member 113P may be a glass substrate, a plastic substrate or an insulating material (such as an organic or inorganic insulating material), wherein the glass substrate and the plastic substrate may be a thin substrate, and the thickness thereof may be substantially less than or equal to 0.25 mm, but not This is limited.

As shown in FIG. 11 , the first axial electrode 113X may further include a plurality of first sub-electrodes X1 and at least one first connection line X2 disposed between two adjacent first sub-electrodes X1, and the first connection line X2 is electrically connected to two adjacent first sub-electrodes X1. The second axial electrode 113Y may include a plurality of second sub-electrodes Y1 and at least one second connecting line Y2 disposed between two adjacent second sub-electrodes Y1, and the second connecting line Y2 is electrically connected to two adjacent ones. The second sub-electrode Y1. In addition, the insulating member 113P may be disposed between the first connecting line X2 and the second connecting line Y2 for electrically isolating the first axial electrode 113X and the second axial electrode 113Y, but is not limited thereto. The insulating member 113P may include an inorganic material such as tantalum nitride, tantalum oxide and niobium oxynitride, an organic material such as an acrylic resin, or other suitable materials. Please also note that the above-mentioned touch electrode 113S, the wire 113C, the first axial electrode 113X, the second axial electrode 113Y, the first sub-electrode X1, the first connection line X2, the second sub-electrode Y1, and the second connection line Y2 may be formed of a transparent conductive material such as graphene, germane, indium tin oxide, indium zinc oxide and aluminum zinc oxide, metal or other suitable conductive material, respectively. The metal may include at least one of a metal material such as aluminum, copper, silver, chromium, titanium, molybdenum, niobium, a composite layer of the above materials, or an alloy of the above materials, but is not limited thereto, and its type It may be a grid electrode, such as a metal grid, having a line width between 0.8 micrometers (μm) and 10 micrometers (μm). The metal grid can be processed by yellow light lithography, printing, coating, embossing grooves and filling metal. Made out. The metal mesh may be stacked in a single layer or a plurality of layers of metal, and an anti-reflection layer, an atomization layer or a blackening layer may be disposed near the surface of the user to reduce the reflectance. The conductive material may include conductive particles, carbon nanotubes or nano-silver wires, but is not limited thereto, and its shape may be a grid shape, such as a conductive mesh. In addition, the touch element 113 of the present invention is not limited to the types shown in the above FIGS. 8 to 11 , and the types of the various touch elements 113 shown in the above FIGS. 8 to 11 are also visible. It needs to be applied to other embodiments of the present invention to be described later.

The different embodiments of the present invention are described below, and the following description is mainly for the sake of simplification of the description of the embodiments, and the details are not repeated. In addition, the same elements in the embodiments of the present invention are denoted by the same reference numerals to facilitate the comparison between the embodiments.

As shown in FIG. 12, a second embodiment of the present invention provides a touch panel 210. The difference from the first embodiment is that the touch panel 210 further includes a first opposite substrate 211 corresponding to the cover plate 111. The first opposite substrate 211 has a third surface 211A and an opposite fourth surface 211B, and the third surface 211A faces the cover plate 111. The touch element 113 of the present embodiment is disposed on the third surface 211A of the first opposite substrate 211, and the touch element 113 at least partially corresponds to the light transmissive area R1. In other embodiments (not shown), the touch element 113 may also be disposed on the fourth surface 211B of the first opposite substrate 211. Alternatively, part of the touch element 113 may be disposed on the cover plate 111 and another part of the touch element 113 may be disposed on the first opposite substrate 211. In addition, the touch panel 210 further includes a first adhesive layer 291 disposed between the cover plate 111 and the first opposite substrate 211 for bonding the cover plate 111 and the first opposite substrate 211. The first adhesive layer 291 may include an optical clear adhesive (OCA), a pressure sensitive adhesive (PSA), or other suitable bonding material. The first counter substrate 211 may include a glass substrate, a plastic substrate, a flexible plastic substrate, a thin glass substrate, or a suitable substrate.

As shown in FIG. 13, a third embodiment of the present invention provides a touch panel 310. The difference from the second embodiment is that the touch element 113 of the present embodiment can be partially disposed on the third surface 211A of the first opposite substrate 211 and partially disposed on the fourth surface 211B of the first opposite substrate 211. on. For example, the touch element 113 can include a first axial electrode 113X and a second axial electrode 113Y. The first axial electrode 113X can be disposed on the fourth surface 211B of the first opposite substrate 211, and the second axis The electrode 113Y may be disposed on the third surface 211A of the first opposite substrate 211.

As shown in FIG. 14, a fourth embodiment of the present invention provides a touch panel 410. The difference from the third embodiment is that the touch panel 410 further includes a second opposite substrate 212 corresponding to the first opposite substrate 211 . The second opposite substrate 212 has a fifth surface 212A and an opposite sixth surface 212B, and the fifth surface 212A faces the fourth surface 211B of the first opposite substrate 211. That is, the first opposite substrate 211 is disposed between the cover plate 110 and the second opposite substrate 212. The touch element 113 of the embodiment may be partially disposed on the first opposite substrate 211 and partially disposed on the second opposite substrate 212. For example, the first axial electrode 113X may be disposed on the fifth surface 212A of the second opposite substrate 212, and the second axial electrode 113Y may be disposed on the third surface 211A of the first opposite substrate 211. In other embodiments (not shown), the first axial electrode 113X may be disposed on the sixth surface 212B of the second opposite substrate 212, and the second axial electrode 113Y may be disposed on the first opposite substrate 211. On the fourth side 211B. In addition, the touch panel 410 further includes a second adhesive layer 292 disposed between the first opposite substrate 211 and the second opposite substrate 212 for bonding the first opposite substrate 211 and the second opposite substrate 212. The material properties of the second adhesive layer 292 are similar to those of the first adhesive layer 291 described above, and thus will not be described herein. It should be noted that the structure of the touch panel of the present invention is not limited to the types shown in the above-mentioned FIG. 7 and FIG. 12 to FIG. 14 , and the above-mentioned FIG. 7 and FIG. 12 to FIG. The types of various touch panels shown may also be applied to other embodiments of the present invention to be described later.

As shown in FIG. 15 and FIG. 16, a fifth embodiment of the present invention provides a touch display device 102. The difference from the first embodiment is that the optical adhesive layer 141 and the support structure S may not completely cover the surrounding area R3 of the lower substrate 122, but only the corner 122C of the surrounding area R3 of the lower substrate 122 is disposed by the support structure S. To achieve the desired effect of increasing structural strength.

As shown in FIGS. 17 and 18, a sixth embodiment of the present invention provides a touch display device 103. The difference from the first embodiment described above is that the second retaining wall 132 of the embodiment is The projection pattern P on the peripheral region R3 of the lower substrate 122 is located between the upper substrate 121 and the second control element 125 in the horizontal direction H. By the position of the second retaining wall 132 of the present embodiment, it is also ensured that the first liquid optical glue 140 overflows to the surrounding area R3 through the first gap V1 and forms the supporting structure S at least at the corner 122C.

As shown in FIG. 19, a seventh embodiment of the present invention provides a touch display device 104. The difference from the sixth embodiment is that the spacer structure 130 of the embodiment may include a plurality of second retaining walls 132 disposed adjacent to each other, and a second gap V2 between the two adjacent second retaining walls 132. A liquid optical glue 140 can also overflow to the surrounding area R3 through the second gap V2, thereby improving the distribution of the first liquid optical glue 140 in the surrounding area R3. Therefore, after the curing process, the optical adhesive layer 141 can be connected to the support structure S through the second gap V2.

As shown in FIG. 20 to FIG. 22, an eighth embodiment of the present invention provides a method of fabricating a touch display device. The difference from the first embodiment is that the manufacturing method of the embodiment further includes coating a second liquid optical adhesive 150 on the touch panel 110 before the bonding process. The second liquid optical adhesive 150 is preferably separated from the first liquid optical adhesive 140, but is not limited thereto. In addition, the material of the second liquid optical glue 150 may also be the same as or different from the first liquid optical glue 140 as needed. The second liquid optical adhesive 150 forms a support structure S between the peripheral region R3 of the lower substrate 122 and the touch panel 110 after a curing process. The curing process visible material properties of the second liquid optical adhesive 150 described above are performed separately or separately from the curing process of the first liquid optical adhesive 140. The support structure S formed by the second liquid optical adhesive 150 in this embodiment can also directly contact the touch panel 110 and the lower substrate 122. In addition, the support structure S of the embodiment is disposed separately from the optical adhesive layer 141, but is not limited thereto. In other embodiments of the present invention, the first optical adhesive 140 may be overflowed to the peripheral region R3 as needed to connect the optical adhesive layer 141 with the support structure S formed by the second liquid optical adhesive 150. In addition, in other embodiments of the present invention, the second liquid optical adhesive 150 may be applied to the peripheral region R3 of the lower substrate 122 before the bonding process, and after the bonding process and the curing process. A support structure S is formed between the peripheral region R3 of the lower substrate 122 and the touch panel 110. In this embodiment, when the material of the second liquid optical glue 150 is different from the first liquid optical glue 140, The support structure S is formed of a different material from the optical adhesive layer 141.

As shown in FIG. 23 and FIG. 24, a ninth embodiment of the present invention provides a touch display device 106. The difference from the eighth embodiment described above is that the first optical adhesive 140 of the present embodiment can overflow to the peripheral region R3 to connect the optical adhesive layer 141 with the support structure S formed by the second liquid optical adhesive 150. The arrangement of the second liquid optical adhesive 150 of the present embodiment can further enhance the structural strength of the lower substrate 122 protruding from the peripheral region R3 of the upper substrate 121, thereby achieving the effects of improving product reliability and process yield.

As shown in FIG. 25, a tenth embodiment of the present invention provides a touch display device 107. The difference from the first embodiment is that the display panel 120 of the embodiment further includes an outer frame 126 and a backlight module 127. The outer frame 126 has an accommodating space 126S. The backlight module 127 and the lower substrate 122 are disposed in the accommodating space 126S, and the backlight module 127 is disposed between the lower substrate 122 and the outer frame 126. The outer frame 126 and the backlight module 127 of this embodiment can also be disposed in other embodiments described above as needed.

As shown in FIG. 26, an eleventh embodiment of the present invention provides a touch display device 108. The touch display device 108 includes a cover plate 111 , a touch element 113 , a display panel 120 , a spacer structure 130 , an optical adhesive layer 141 , and a support structure S . The cover plate 111 has a light transmitting area R1 and a decorative area R2, and the decorative area R2 is located on at least one side of the light transmitting area R1. The touch element 113 is at least partially disposed corresponding to the light transmissive area R1. The display panel 120 is disposed opposite to the cover plate 111. The display panel 120 includes an upper substrate 121 and a lower substrate 122. The lower substrate 122 is disposed opposite to the upper substrate 121. The lower substrate 122 has a peripheral region R3, and the peripheral region R3 is not overlapped with the upper substrate 121 in the vertical projection direction Z. The spacer structure 130 is disposed on the cover plate 111 and located between the cover plate 111 and the display panel 120. The optical adhesive layer 141 is at least partially disposed between the cover plate 111 and the substrate 121 above the display panel 120 for bonding the cover plate 111 and the display panel 120. The spacer structure 130 surrounds the optical adhesive layer 141. The support structure S is disposed between the peripheral region R3 of the lower substrate 122 and the cover plate 111. The difference from the first embodiment is that the touch device 113 of the present embodiment is disposed on the upper substrate 121. Therefore, the touch display device 108 of the present embodiment can be regarded as an on-cell touch display device. But it is not limited to this. In other embodiments of the present invention, a portion of the touch element 113 may be disposed on the upper substrate 121 and another portion of the touch element 113 may be disposed on the cover plate 111. The arrangement position and material characteristics of the other components of the touch display device 108 are similar to those of the first embodiment except for the position where the touch component 113 is disposed, and thus will not be described herein. It should be noted that, in the foregoing embodiments, all or at least part of the touch elements 113 may be disposed on the upper substrate 121 as in this embodiment.

In summary, the present invention utilizes a spacer structure and a liquid optical adhesive to bond the touch panel and the display panel, thereby achieving the purpose of improving the bonding effect and product quality. In addition, the present invention forms a supporting structure between the region of the display panel that is not covered by the upper substrate and the touch panel, thereby enhancing the structural strength of the lower substrate protruding from the upper substrate in the display panel, thereby improving the structure. Product reliability and process yield.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

101‧‧‧Touch display device

110‧‧‧Touch panel

111‧‧‧ Covering board

111A‧‧‧ first side

111B‧‧‧ second side

112‧‧‧Decorative layer

113‧‧‧Touch components

120‧‧‧ display panel

121‧‧‧Upper substrate

122‧‧‧lower substrate

122E‧‧‧ side

123‧‧‧ polarizer

124‧‧‧First control element

125‧‧‧Second control element

130‧‧‧ interval structure

131‧‧‧First retaining wall

132‧‧‧Second retaining wall

140‧‧‧First liquid optical adhesive

141‧‧‧Optical adhesive layer

D1‧‧‧ distance

H‧‧‧ horizontal direction

P‧‧‧ projection pattern

R1‧‧‧Light transmission area

R2‧‧‧Decorative area

R3‧‧‧ surrounding area

S‧‧‧Support structure

Z‧‧‧Vertical projection direction

Claims (48)

A touch display device includes: a touch panel; a display panel disposed opposite to the touch panel, the display panel includes: an upper substrate; and a lower substrate disposed opposite to the upper substrate, wherein the lower substrate has a surrounding area, and the surrounding area is not overlapped with the upper substrate in a vertical projection direction; a spacer structure is disposed on the touch panel and located between the touch panel and the display panel; an optical adhesive layer And at least partially disposed between the touch panel and the upper substrate of the display panel for bonding the touch panel and the display panel, wherein the spacer structure surrounds the optical adhesive layer; and a support structure is disposed on the The peripheral area of the lower substrate is between the touch panel. The touch display device of claim 1, wherein the support structure directly contacts the touch panel and the surrounding area of the lower substrate. The touch display device of claim 1, wherein the support structure and the optical adhesive layer are disposed apart from each other. The touch display device of claim 1, wherein the support structure and the optical adhesive layer are integrally formed of the same material. The touch display device of claim 1, wherein the support structure and the optical adhesive layer are formed of different materials. The touch display device of claim 4 or 5, wherein the spacing structure comprises at least one first block The wall and the at least one second retaining wall are separated from each other, the first retaining wall directly contacting the display panel, and the second retaining wall is separated from the display panel, between the first retaining wall and the second retaining wall There is a first gap, and the optical adhesive layer is connected to the support structure through the first gap. The touch display device of claim 4 or 5, wherein the spacer structure comprises at least one first retaining wall and a plurality of second retaining walls are disposed apart from each other, the first retaining wall directly contacting the display panel, and the first retaining wall directly contacts the display panel The second retaining wall is separated from the display panel, and a second gap is disposed between the two adjacent second retaining walls, and the optical adhesive layer is connected to the supporting structure through the second gap. The touch display device of claim 1, wherein the spacer structure comprises at least one first retaining wall and at least one second retaining wall disposed apart from each other, the first retaining wall directly contacting the display panel, and the second The retaining wall is separated from the display panel. The touch display device of claim 8, wherein the first retaining wall extends to a side of the touch panel. The touch display device of claim 8, wherein the second retaining wall overlaps the surrounding area of the lower substrate in the vertical projection direction, and the second retaining wall is along the vertical projection direction on the lower substrate There is a projection pattern on the surrounding area. The touch display device of claim 10, wherein a distance between the projection pattern and a side of the surrounding area of the lower substrate is greater than or equal to 0.5 mm. The touch display device of claim 10, wherein the display panel further comprises a first control element disposed on the surrounding area of the lower substrate. The touch display device of claim 12, wherein the projection pattern is located in the first control element Between the piece and the upper substrate. The touch display device of claim 12, wherein the display panel further comprises a second control component disposed on the peripheral region of the lower substrate, and the second control component is disposed on the upper substrate and the first Between control elements. The touch display device of claim 14, wherein the projection pattern is located between the first control element and the second control element. The touch display device of claim 14, wherein the projection pattern is located between the upper substrate and the second control element. The touch display device of claim 1, wherein the display panel further comprises: an outer frame having an accommodating space; and a backlight module disposed in the accommodating space of the outer frame, wherein the lower The substrate is disposed in the accommodating space, and the backlight module is disposed between the lower substrate and the outer frame. The touch display device of claim 1, wherein the touch panel comprises: a cover plate having a light transmissive area and a decorative area, the decorative area being located on at least one side of the light transmissive area; and a touch The component is at least partially disposed corresponding to the light transmissive area. The touch display device of claim 18, wherein the touch element is at least partially disposed on the cover plate. The touch display device of claim 18, further comprising a first opposite substrate disposed corresponding to the cover plate, wherein the touch component is at least partially disposed on the first opposite substrate. The touch display device of claim 20, further comprising a second opposite substrate disposed corresponding to the first opposite substrate, wherein the first opposite substrate is disposed on the cover plate and the second opposite substrate The touch component is partially disposed on the first opposite substrate and partially disposed on the second opposite substrate. The touch display device of claim 18, wherein the touch element comprises a plurality of touch electrodes electrically insulated from each other. The touch display device of claim 22, wherein each of the touch electrodes comprises at least one of a transparent conductive material, a metal material, conductive particles, a carbon nanotube or a nano silver wire. The touch display device of claim 23, wherein the transparent conductive material comprises at least one of graphene, decene, indium tin oxide, indium zinc oxide, and aluminum zinc oxide. The touch display device of claim 23, wherein the metal material comprises at least one of aluminum, copper, silver, chromium, titanium, molybdenum and tantalum, aluminum, copper, silver, chromium, titanium, molybdenum or tantalum Composite layer or alloy. The touch display device of claim 22, wherein each of the touch electrodes is in a grid shape, and the grid of the touch electrodes is a single layer or a plurality of layers of metal materials, and the line width of the grid is It is between 0.8 micrometers (μm) and 10 micrometers. The touch display device of claim 22, wherein the touch electrodes comprise at least one touch signal driving electrode and at least one touch signal receiving electrode. The touch display device of claim 22, wherein the touch element comprises: a plurality of first axial electrodes extending along a first direction; and a plurality of second axial electrodes extending along a second direction, wherein the second axial electrodes are coupled to the first axial electrodes Electrical insulation. The touch display device of claim 28, wherein each of the first axial electrodes comprises a plurality of first sub-electrodes and at least one first connecting line is disposed between the two adjacent first sub-electrodes, The first connecting line is electrically connected to the two adjacent first sub-electrodes, each of the second axial electrodes includes a plurality of second sub-electrodes, and at least one second connecting line is disposed on the two adjacent second sub-electrodes The second connecting line is electrically connected between the two adjacent second sub-electrodes. A method for manufacturing a touch display device includes: providing a touch panel and a display panel, wherein the display panel comprises: an upper substrate; and a lower substrate opposite to the upper substrate, wherein the lower substrate has a surrounding area, And the surrounding area is not overlapped with the upper substrate; a spacing structure is formed on the touch panel; a first liquid optical glue is coated on the touch panel, wherein the spacing structure surrounds the a first liquid optical glue; performing a bonding process, bonding the touch panel formed with the spacer structure and the first liquid optical adhesive to the display panel; and performing a curing process to make the first liquid optical The glue is cured to form an optical adhesive layer between the touch panel and the display panel. The manufacturing method of claim 30, wherein the spacer structure comprises at least one first retaining wall and at least one second retaining wall separated from each other, the first retaining wall directly contacting the display panel, and the second retaining wall is coupled to The display panel is separated, and a first gap is formed between the first retaining wall and the second retaining wall. The method of claim 30, further comprising: flowing a portion of the first liquid optical glue to the peripheral region through the first gap before the curing treatment, for performing the curing treatment on the lower substrate A support structure is formed between the surrounding area and the touch panel. The manufacturing method of claim 32, wherein the supporting structure directly contacts the touch panel and the lower substrate. The method of claim 32, wherein the support structure is attached to the optical adhesive layer. The method of claim 32, wherein the spacer structure comprises a plurality of the second retaining walls, and a second gap is formed between the two adjacent second retaining walls, and the optical adhesive layer passes through the first The two gaps are connected to the support structure. The manufacturing method of claim 31, wherein the first retaining wall extends to one side of the touch panel. The manufacturing method of claim 31, wherein the second retaining wall overlaps the surrounding area of the lower substrate in the vertical projection direction, and the second retaining wall is on the lower substrate along the vertical projection direction. There is a projection pattern on the surrounding area. The method of claim 37, wherein a distance between the projection pattern and a side of the surrounding area of the lower substrate is greater than or equal to 0.5 mm. The method of claim 37, wherein the display panel further comprises a first control element located on the surrounding area of the lower substrate. The method of claim 39, wherein the projection pattern is located between the first control element and the upper substrate. The manufacturing method of claim 39, wherein the display panel further comprises a second control element located on the peripheral area of the lower substrate, and the second control element is located between the upper substrate and the first control element . The method of claim 41, wherein the projection pattern is between the first control element and the second control element. The method of claim 42, wherein the projection pattern is between the upper substrate and the second control element. The method of claim 30, further comprising applying a second liquid optical glue to the touch panel before the bonding process, wherein the second liquid optical adhesive and the first liquid optical adhesive are mutually Separation. The method of claim 30, wherein the second liquid optical glue forms a support structure between the peripheral region of the lower substrate and the touch panel after the curing process. The manufacturing method of claim 45, wherein the supporting structure directly contacts the touch panel and the lower substrate. The method of claim 45, wherein the support structure is separated from the optical adhesive layer. A touch display device includes: a cover plate having a light transmissive area and a decorative area, wherein the decorative area is located in at least one of the transparent areas a touch panel is disposed at least partially corresponding to the light transmissive region; a display panel is disposed opposite the cover panel, the display panel includes: an upper substrate, wherein the touch component is at least partially disposed on the upper substrate And a lower substrate disposed opposite to the upper substrate, wherein the lower substrate has a peripheral region, and the peripheral region is not overlapped with the upper substrate in a vertical projection direction; a spacer structure is disposed on the cover plate An optical adhesive layer is disposed at least partially between the cover plate and the upper substrate of the display panel for bonding the cover plate and the display panel, wherein the spacer structure is Surrounding the optical adhesive layer; and a support structure disposed between the peripheral region of the lower substrate and the cover plate.