TWI382338B - Touch control display device - Google Patents

Description

Touch display device

The present invention relates to a touch display device.

In recent years, with the development trend of humanization and simplification of operation, touch display devices with touch panels have been more and more widely used in production and life. Since the user can input signals by directly touching the touch display device by hand or other objects, thereby reducing or even eliminating the user's dependence on other input devices (such as a keyboard, a mouse, a remote controller, etc.), the operation of the user is greatly facilitated.

Currently, touch panels usually include resistive, capacitive, sonic, and infrared types, and are widely used in consumer electronic products such as mobile phones and personal digital assistants (PDAs).

Please refer to FIG. 1 , which is a schematic cross-sectional view showing a side structure of a prior art touch display device. The touch display device 100 is a resistive touch display device. The touch display device 100 includes a touch panel 10 , a display screen 11 , and a fixed frame 12 . The touch panel 10 is stacked on the display screen 11. The touch panel 10 accepts a touch of a hand or a pen and generates a corresponding touch signal. The display 11 displays the corresponding picture. The fixing frame 12 encloses a receiving space for receiving the touch panel 10 and the display screen 11 .

The touch panel 10 includes a first substrate 101 , a second substrate 102 disposed opposite to the first substrate 101 , and a first sensing layer 103 between the first substrate 101 and the second substrate 102 . , two electrodes 104, An insulating layer 105, a plurality of spacers 106 and a second sensing layer 107.

The first substrate 101 is located away from the side of the display screen 11. The first sensing layer 103 is plated on the surface of the first substrate 101 adjacent to the second substrate 102, and is made of transparent conductive Indium-Tin Oxide (ITO). The second sensing layer 107 is plated on the surface of the second substrate 102 near the first substrate 101, and is made of transparent indium tin oxide.

The two electrodes 104 are plated on the surface of the first substrate 101 adjacent to the second substrate 102 , and are disposed at two ends of the first sensing layer 103 and electrically connected to the first sensing layer 103 .

The plurality of spacers 106 are sandwiched between the first sensing layer 103 and the second sensing layer 107 for isolating the first sensing layer 103 from the second sensing layer 107.

The material of the insulating layer 105 is double-sided tape or water glue, which is located at the edge of the first substrate 101 and the second substrate 102, and bonds the first substrate 101 and the second substrate 102. At the same time, the insulating layer 105 insulates the two electrodes 104 from the second insulating layer 107 , and encapsulates the plurality of spacers 106 between the first sensing layer 103 and the second sensing layer 107 .

The fixed frame 12 includes an extension 120 that defines a display area (not labeled). The extension portion 120 presses the peripheral edge of the first substrate 201. A spacing L1 is reserved between the insulating layer 105 and the second sensing layer 107 to prevent the insulating layer 105 from entering the display area when the first substrate 101 and the second substrate 102 are pressed together, thereby causing poor appearance. The problem.

The inner edge of the extension 120 is generally as close as possible to the display area and This pitch L1 is covered to prevent the problem of poor appearance. In other words, the inner edge of the extending portion 120 is closer to the center of the display region than the inner edge of the insulating layer 105, and the portion of the extending portion 120 beyond the insulating layer 105 is not supported by the insulating layer 105.

In order to ensure the tightness of the touch display device 100, the touch panel 10 and the display screen 11 are pressed together as much as possible. The fixing frame 12 applies a relatively large pressure to the first substrate 101, and the extension 120 beyond the insulating layer 105 is not supported by the insulating layer 105. Moreover, the extending portion 120 is in direct contact with the peripheral edge of the first substrate 101, so that the first substrate 101 located above the spacing L1 is deformed, so that the first sensing layer 103 is easily damaged by deformation, so that the touch display is Device 100 is less reliable.

In view of this, it is necessary to provide a touch display device with higher reliability.

A touch display device includes a touch panel. The touch panel includes a first substrate, a second substrate spaced apart from the first substrate, an insulating layer and a reinforcing layer. A first sensing layer is disposed on a surface of the first substrate adjacent to the second substrate, and a second sensing layer is disposed on a surface of the second substrate adjacent to the first substrate. The insulating layer is located at a periphery between the first substrate and the second substrate and bonds the first substrate and the second substrate. A spacing is formed between the insulating layer and the second sensing layer. The reinforcing layer covers at least a portion of the spacing in the vertical direction.

A touch display device includes a touch panel including a contact surface. The touch display device further includes a reinforcing layer disposed on a peripheral edge of the contact surface.

Compared with the prior art, since the touch display device of the present invention is provided with a reinforcing layer on the contact surface of the touch panel, the reinforcing layer covers at least a portion of the pitch in the vertical direction, so that the periphery of the first substrate can be partially withstood. More pressure, especially when falling after a collision, the touch display device has higher reliability.

2 and FIG. 3, FIG. 2 is a schematic plan view of the touch display device of the present invention, and FIG. 3 is a cross-sectional view of the touch display device of FIG. 2 taken along line III-III. The touch display device 200 is a resistive touch display device. The touch display device 200 includes a touch panel 20 , an antistatic layer 208 , a reinforcing layer 209 , a display screen 21 , and a fixing frame 22 .

The touch panel 20 is stacked on the display screen 21, and the touch panel 20 detects an external touch signal. The display screen 21 displays a corresponding frame, and the fixed frame 22 encloses a receiving space for receiving the touch panel 20 and the display screen 21.

The touch panel 20 includes a first substrate 201, a second substrate 202 disposed opposite to the first substrate 201, and a first sensing layer sandwiched between the first substrate 201 and the second substrate 202. 203, a second electrode 204, an insulating layer 205, a plurality of spacers 206, and a second sensing layer 207. The first substrate 201 is disposed away from the display screen 21 side, and the surface away from the second substrate 202 side is a contact surface 2010. The first substrate 201 is made of Soft polyethylene terephthalate (PET).

The first sensing layer 203 is plated on the surface of the first substrate 201 near the second substrate 202, and is made of transparent conductive indium tin oxide. The second sensing layer 207 is plated on the surface of the second substrate 202 near the side of the first substrate 201, and is also made of transparent indium tin oxide.

The plurality of spacers 206 are sandwiched between the first sensing layer 203 and the second sensing layer 207 for insulating the first sensing layer 203 from the second sensing layer 207. When the contact surface 2010 is touched by the hand, the first substrate 201 is forced to bend toward the second substrate 202, and the first sensing layer 203 is in contact with the second sensing layer 207 and generates a touch signal. The touch signal is transmitted to an external controller (not shown) to analyze the corresponding touch position.

The two electrodes 204 are plated on the surface of the first substrate 201 adjacent to the second substrate 202 and disposed on both ends of the first sensing layer 203 and electrically connected to the first sensing layer 203.

The material of the insulating layer 205 may be a double-sided tape or a water-based glue. The first substrate 201 and the second substrate 202 may be bonded to the edge of the first substrate 201 and the second substrate 202. At the same time, the two electrodes 204 are insulated from the second insulating layer 207 , and the plurality of spacers 206 are encapsulated between the first sensing layer 203 and the second sensing layer 207 .

The fixing frame 22 includes an extending portion 220, and an inner edge of the extending portion 220 defines a display area AA (Active Area). A distance L2 is reserved between the insulating layer 205 and the second sensing layer 207.

The fixing frame 22 and the peripheral edge of the contact surface 2010 are from the first substrate The antistatic layer 208 and the reinforcing layer 209 are sequentially disposed in the direction of the second substrate 202. The antistatic layer 208 is a rectangular hollow frame including an antistatic layer inner edge 211 and an antistatic layer outer edge (not labeled). The outer edge of the antistatic layer is aligned with the outer side contour of the first substrate 201. The antistatic layer 208 is made of an insulating antistatic foam.

The reinforcing layer 209 is also a rectangular hollow frame including a reinforcing layer inner edge 210 and a reinforcing layer outer edge (not labeled). The outer edge of the reinforcing layer is aligned with the outer side contour of the first substrate 201. The distance from the edge of the reinforcing layer 210 to the center of the display area AA is greater than the distance from the inner edge of the extending portion 220 to the center of the display area AA. Meanwhile, the distance from the edge of the reinforcing layer 210 to the center of the display area AA is smaller than the defense. The distance from the inner edge 211 of the electrostatic layer to the center of the display area AA. That is, the width of the reinforcing layer 209 is greater than the width of the antistatic layer 208. At the same time, the reinforcing layer 209 partially covers the pitch L2 in the vertical direction. The reinforcing layer 209 is hot pressed at the peripheral edge of the contact surface 2010 of the first substrate 201, that is, tightly bonded to the peripheral edge of the first substrate 201. The hardness of the reinforcing layer 209 is greater than the hardness of the antistatic layer 208. At the same time, the hardness of the reinforcing layer 209 is also greater than the hardness of the first substrate 201, and the material is an impact resistant resin.

The antistatic layer 208 is laminated on the reinforcing layer 209, and one surface thereof is in contact with the extending portion 220, and the other surface is in contact with the reinforcing layer 209. That is, the extension portion 220 is pressed against the antistatic layer 208. The inner edge 211 of the antistatic layer approaches the center of the display area AA to prevent static electricity from entering the touch panel 20 from the inner side edge 211 of the antistatic layer.

Compared with the prior art, the touch display device 200 of the present invention is in the first An antistatic layer 208 and a reinforcing layer 209 are disposed on the peripheral edge of the contact surface 2010 of the substrate 201. The reinforcing layer 209 is heat-pressed and tightly coupled to the peripheral edge of the first substrate 201. When the first substrate 201 is pressed by the extending portion 220, the reinforcing layer 209 is also not easy to slide to buffer the pressure, and is dropped or When the collision occurs, the touch display device 200 can withstand a large pressure.

The hardness of the reinforcing layer 209 is greater than the hardness of the antistatic layer 208, and the reinforcing layer 209 is closer to the display area AA than the antistatic layer 208. The reinforcing between the first substrate 201 and the extending portion 220 is Layer 20 is spaced apart and has no direct contact. When the fixing frame 22 receives the touch panel 20 and the display screen 21, the pressure applied to the first substrate 20 through the antistatic layer 208 is shared by the non-deformable reinforcing layer 209, thereby overcoming the first substrate 201. The phenomenon that the first sensing layer 203 is damaged due to the partial lack of support is easily deformed at the edge. Therefore, the reliability of the touch display device 200 is high.

In addition, the material of the antistatic layer 208 can be antistatic foam, which not only can buffer the pressure of the extension portion 220 on the touch panel 20, but also can prevent the influence of static electricity on the touch panel 20. The reliability of the touch display device 200 is further improved.

The present invention is not limited to the above embodiment, and the antistatic layer 208 and the reinforcing layer 209 may completely cover the spacing L2 in the vertical direction, that is, the antistatic layer inner edge 211 and the reinforcing layer inner edge 210 to the The distance from the center of the display area AA is smaller than the distance from the insulating layer 205 to the center of the display area AA.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

Touch display device ‧‧200

Spacer ‧ ‧ 206

Touch panel ‧‧20

Second sensing layer ‧‧‧207

Display ‧‧21

Anti-static layer ‧‧‧208

Fixed frame ‧ ‧ 22

Reinforcement layer ‧‧‧209

First substrate ‧‧‧201

Inner edge of the reinforcing layer ‧ ‧ ‧

Second substrate ‧‧‧202

Antistatic layer inner edge ‧‧‧211

First sensing layer ‧ ‧ 203

Extension ‧‧‧220

Electrode ‧‧204

Contact surface ‧ ‧ 2010

Insulation ‧‧‧205

1 is a schematic cross-sectional view showing a side structure of a prior art touch display device.

2 is a schematic plan view of a touch display device of the present invention.

3 is a cross-sectional view of the touch display device taken along line III-III.

Touch display device ‧‧200

Spacer ‧ ‧ 206

Touch panel ‧‧20

Second sensing layer ‧‧‧207

Display ‧‧21

Anti-static layer ‧‧‧208

Fixed frame ‧ ‧ 22

Reinforcement layer ‧‧‧209

First substrate ‧‧‧201

Inner edge of the reinforcing layer ‧ ‧ ‧

Second substrate ‧‧‧202

Antistatic layer inner edge ‧‧‧211

First sensing layer ‧ ‧ 203

Extension ‧‧‧220

Electrode ‧‧204

Contact surface ‧ ‧ 2010

Insulation ‧‧‧205

Claims (16)

A touch display device includes a touch panel, the touch panel includes a first substrate, a second substrate disposed opposite to the first substrate, an insulating layer and a reinforcing layer, wherein the first A first sensing layer is disposed on a surface of the substrate adjacent to the second substrate, and a second sensing layer is disposed on a surface of the second substrate adjacent to the first substrate. The insulating layer is located on the first substrate and the second substrate. The periphery of the first substrate is bonded to the second substrate, and a gap is formed between the insulating layer and the second sensing layer, and the reinforcing layer covers at least a portion of the pitch in the vertical direction. The touch display device of claim 1, wherein the reinforcing layer completely covers the pitch in a vertical direction. The touch display device of claim 1, wherein the reinforcing layer is a rectangular hollow frame, the first substrate comprises a contact surface, the contact surface is away from the second substrate, and the reinforcing layer is hot pressed The periphery of the contact surface. The touch display device of claim 3, wherein the touch display device further comprises an antistatic layer, and the antistatic layer is laminated with the reinforcing layer. The touch display device of claim 4, wherein the antistatic layer is also a hollow rectangular frame. The touch display device of claim 4, wherein the touch display device further comprises a fixing frame, the reinforcing layer comprises an inner edge of the reinforcing layer, and the fixing frame comprises an extending portion, the extending portion Edge boundary Forming a display area, the antistatic layer is in contact with the extension portion, and the other surface is in contact with the reinforcement layer, and the distance between the edge of the extension portion and the center of the display area is smaller than the inner edge of the reinforcement layer and the center of the display area distance. The touch display device of claim 6, wherein the antistatic layer comprises an inner edge of the antistatic layer, and a distance between an inner edge of the reinforcing layer and a center of the display region is smaller than an inner edge of the antistatic layer. The distance from the center of the display area. The touch display device of claim 7, wherein the reinforcing layer has a hardness greater than a hardness of the antistatic layer. The touch display device according to claim 8, wherein the reinforcing layer is made of an impact resistant resin, and the antistatic layer is made of an antistatic foam. The touch display device of claim 1, wherein the touch display device further comprises a display screen, and the display screen is stacked with the touch panel. A touch display device includes a touch panel, the touch panel includes a contact surface, wherein the touch display device further includes a reinforcing layer and an antistatic layer, and the reinforcing layer is disposed around the contact surface The edge, the antistatic layer is laminated with the reinforcing layer. The touch display device of claim 11, wherein the touch panel further includes a first substrate and a second substrate disposed opposite to the first substrate, the hardness of the reinforcing layer being greater than the first The hardness of a substrate. The touch display device of claim 11, wherein The hardness of the reinforcing layer is greater than the hardness of the antistatic layer. The touch display device according to claim 13, wherein the reinforcing layer is made of an impact resistant resin, and the antistatic layer is made of an antistatic foam. The touch display device of claim 11, further comprising a fixing frame, the reinforcing layer comprising an inner edge of the reinforcing layer, the fixing frame comprising an extending portion, the edge of the extending portion defining a display area, The antistatic layer is in contact with the extending portion, and the other surface is in contact with the reinforcing layer. The distance between the edge of the extending portion and the center of the display region is smaller than the distance between the inner edge of the reinforcing layer and the center of the display region. The touch display device of claim 15, wherein the antistatic layer comprises an inner edge of the antistatic layer, and a distance between an inner edge of the reinforcing layer and a center of the display region is smaller than an inner edge of the antistatic layer. The distance from the center of the display area.