TW201524303A - Touch control display device - Google Patents

Abstract

A touch control display device includes a back cover, a front cover, a touch panel, a display panel, and a composite adhesive layer. The back cover has a frame and an accommodating space. The front cover has an opening. The front cover is aligned with and is configured to attach to the frame of the back cover. The touch panel is fixed on an outer side of the front cover and is aligned with the opening of the front cover. The display panel is installed in the accommodating space of the back cover and is aligned with the opening. The composite adhesive layer surrounding the inner side of the front cover and is aligned with a rim of the display panel. The composite adhesive layer is configured to attach on the rim of the display panel, so as to tightly fix the front cover on the display panel.

Description

Touch display

The present invention relates to a display device, and more particularly to a touch display.

In the conventional display, the back cover is inevitably contaminated with dust or moisture. When the display panel is fixed to the back cover, the display panel is liable to adhere to the moisture or dust of the back cover. If moisture or dust adheres to the display panel, it will cause light interference and affect the picture output quality. If moisture or dust enters the circuit unit inside the panel, the device may be damaged.

After the production of the conventional touch panel, the user often taps the touch panel with a finger to achieve the purpose of operating the tablet. However, when the user clicks on the touch panel with a finger for a long time, the panel is delaminated. Therefore, solving the vibration caused by finger clicks is a part of the current technology that needs improvement.

Therefore, the object of the present invention is to provide a touch display including a back cover, a front cover, a touch panel, a display panel and a composite adhesive layer. The back cover has an outer frame and an accommodation space. before The cover has an opening, and the front cover is aligned and attached to the outer frame of the back cover. The touch panel is fixed to the outer edge of the front cover and aligned with the opening of the front cover. The display panel is disposed in the accommodating space in the back cover, and the display panel is aligned with the opening. A composite adhesive layer surrounds the inner edge of the front cover and is aligned with the edge of the adhesive display panel so that the front cover is sealingly fixed to the display panel. The composite adhesive layer comprises a first adhesive layer, a buffer layer and a second adhesive layer. The first adhesive layer adheres to the front cover. The buffer layer is located between the first adhesive layer and the second adhesive layer. The buffer layer is composed of an elastic buffer material. The second adhesive layer is adhered to the display panel. The first adhesive layer is more viscous than the second adhesive layer.

According to another embodiment of the present invention, the first adhesive layer is a polyethylene terephthalate (PET) double-sided adhesive layer comprising two layers of polymethyl methacrylate layer and a PET layer, and the PET layer is located in the poly layer. Between the methyl methacrylate layers, one layer of the polymethyl methacrylate layer adheres to the front cover, and the other layer adheres to the buffer layer.

According to another embodiment of the invention, the buffer layer is a foam layer made of polyurethane.

According to another embodiment of the present invention, the second adhesive layer is a PET double-sided adhesive layer comprising an adhesive layer, a PET layer and an acrylic layer, the PET layer being located between the adhesive layer and the acrylic layer, and the adhesive layer Adhered to the display panel, the acrylic layer adheres to the buffer layer.

According to another embodiment of the present invention, the composite adhesive layer further includes a fourth adhesive layer and a fifth adhesive layer, the fourth adhesive layer is adhered between the first adhesive layer and the fifth adhesive layer, and the fifth adhesive layer is adhered to Between the fourth adhesive layer and the buffer layer.

According to another embodiment of the present invention, the first adhesive layer is a PET double-sided adhesive layer comprising two layers of polymethyl methacrylate layer and a PET layer, and the PET layer is located between the polymethyl methacrylate layers. One layer of the methyl methacrylate layer adheres to the front cover, and the other layer of the polymethyl methacrylate layer adheres to the fourth adhesive layer.

According to another embodiment of the invention, the fourth adhesive layer is a polycarbonate layer.

According to another embodiment of the present invention, the fifth adhesive layer is a double-sided adhesive layer of a tissue substrate, comprising a cotton paper layer and two layers of acrylic glue layer, the cotton paper layer being located between the acrylic glue layers and the acrylic rubber layer being one layer. Adhered to the fourth adhesive layer, another layer of the acrylic adhesive layer adheres to the buffer layer.

According to another embodiment of the invention, the buffer layer is a foam layer made of polyurethane.

According to another embodiment of the present invention, the second adhesive layer is a PET double-sided adhesive layer comprising a layer of adhesive, a PET layer and an acrylic layer, the PET layer being located between the adhesive layer and the acrylic layer, and the adhesive layer is adhered. On the display panel, the acrylic layer adheres to the buffer layer.

When the touch display of the present invention is assembled, the production personnel will align the front cover with the outer frame of the back cover, and then attach the front cover to the back cover. However, when the production personnel inevitably have stickers or stickers, the composite adhesive layer of the present invention is specially designed so that the production personnel can continue to rework. The manufacturer can pull the front cover up and then align the front cover to the outer frame of the back cover, and no residual glue remains on the display panel. When the front cover of the present invention is sealingly fixed to the display panel, the composite adhesive layer surrounds and blocks the passage of moisture or dust. In the row, the moisture or dust in the accommodating space formed by the back cover cannot enter the light-emitting surface of the display panel, so the screen can maintain a good display effect and avoid malfunction. When the user clicks on the touch panel with a finger, a click force is applied to the touch panel. The composite adhesive layer of the touch display of the invention can absorb the click force caused by the user, thereby protecting the touch display without causing partial debonding due to the click force, so that the life of the touch display is longer. The composite adhesive layer of the present invention uses a large amount of PET material, and PET has excellent tensile properties, so that even if the operator applies a tensile force when attaching the composite adhesive layer, the composite adhesive layer is not deformed.

100‧‧‧Touch display

110‧‧‧Back cover

120‧‧‧ front cover

130‧‧‧Touch panel

132‧‧‧Confined space

140‧‧‧ display panel

150‧‧‧Composite adhesive layer

150'‧‧‧Composite adhesive layer

160‧‧‧Front frame

170‧‧‧ accommodating space

180‧‧‧ openings

190‧‧‧ outer edge

200‧‧‧ inner edge

210‧‧‧ edge

220‧‧‧Glossy

230‧‧‧First adhesive layer

232‧‧‧PET layer

234‧‧‧ Polymethyl methacrylate layer

240‧‧‧buffer layer

250‧‧‧Second Adhesive Layer

252‧‧‧Adhesive layer

254‧‧‧PET layer

256‧‧‧Acrylic layer

260‧‧‧four adhesive layer

270‧‧‧ fifth adhesive layer

300‧‧‧ Direction

310‧‧‧ Direction

320‧‧‧ Direction

2-2’‧‧‧ hatching

F‧‧‧Click force

1 is an exploded view of a touch display according to an embodiment of the invention.

Figure 2 is a cross-sectional view of the touch sensitive display according to Figure 1 taken along section line 2-2'.

Fig. 3 is a cross-sectional view showing the combination of the touch display of Fig. 2.

4 is a schematic view showing a composite adhesive layer in accordance with an embodiment of the present invention.

Figure 5 is a schematic view showing a composite adhesive layer in accordance with another embodiment of the present invention.

The essence of the present invention will be clearly described below in the drawings and detailed description. It will be apparent to those skilled in the art that the present invention may be modified and modified without departing from the spirit and scope of the invention.

In order to solve the problem that the display panel is easy to adhere to moisture or dust during the production process, the present invention provides a touch display having a composite adhesive layer to effectively improve the problem. Please refer to Figure 1 and Figure 2. 1 is an exploded view of a touch display according to an embodiment of the invention. Figure 2 is a cross-sectional view of the touch sensitive display according to Figure 1 taken along section line 2-2'. The present invention provides a touch display 100 including a back cover 110, a front cover 120, a touch panel 130, a display panel 140, and a composite adhesive layer 150. The back cover 110 has an outer frame 160 and an accommodation space 170. The front cover 120 has an opening 180. The front cover 120 is aligned with the outer frame 160 of the back cover 110 during assembly, and the front cover 120 is attached to the outer frame 160 of the back cover 110 after alignment. The touch panel 130 is fixed to the outer edge 190 of the front cover 120 and aligned with the opening 180 of the front cover 120. The display panel 140 is disposed in the accommodating space 170 in the back cover 110 , and the display panel 140 is aligned with the opening 180 . The composite adhesive layer 150 surrounds the inner edge 200 of the front cover 120 and is aligned with the edge 210 of the display panel 140.

The assembly personnel will align the front cover 120 with the display panel 140 after assembly, so that the composite adhesive layer 150 is fixed to the edge 210 of the display panel 140. When the touch display 100 is assembled, the manufacturer will align the front cover 120 with the outer frame 160 of the back cover 110, and then the front cover 120 will be aligned with the back cover 110 in the direction 300. However, when the production personnel inevitably have stickers or stickers, the composite adhesive layer 150 of the present invention is specially designed to enable the production personnel. Can continue to rework. The production personnel can pull up the front cover 120 in the direction 310, and then align the front cover 120 with the outer frame 160 of the back cover 110, and no residual glue remains on the display panel 140.

Fig. 3 is a cross-sectional view showing the combination of the touch display of Fig. 2. During the production process, the back cover will inevitably be exposed to dust or moisture. When the display panel is fixed to the back cover, the display panel is liable to adhere to the moisture or dust of the back cover. However, after the cover 120 is sealingly fixed to the display panel 140, the moisture or dust in the accommodating space 170 formed by the back cover 110 cannot be borrowed due to the surrounding of the composite adhesive layer 150 and blocking the passage of moisture or dust. The direction 320 enters the sealed space 132 formed by the display panel 140 and the touch panel 130, so that the light-emitting surface 220 is kept clean, and the screen of the display panel 140 can maintain a good display effect and avoid malfunction. When the user clicks on the touch panel 130 with a finger, a click force F is applied to the touch panel 130. The composite adhesive layer 150 of the touch display 100 of the present invention can absorb the click force F caused by the user, thereby protecting the touch display 100 from local degumming and the like due to the click force F, so that the touch display 100 Longer life.

Please refer to Figure 3 and Figure 4. 4 is a schematic view showing a composite adhesive layer in accordance with an embodiment of the present invention. The composite adhesive layer 150 includes a first adhesive layer 230, a buffer layer 240, and a second adhesive layer 250. The first adhesive layer 230 is adhered to the front cover 120. The buffer layer 240 is located between the first adhesive layer 230 and the second adhesive layer 250. The buffer layer 240 is composed of an elastic buffer material. The second adhesive layer 250 is adhered to the display panel 140. The first adhesive layer 230 is more viscous than the second adhesive layer 250. In other words An adhesive layer 230 is strongly viscous and the second adhesive layer 250 is weakly viscous. Therefore, when the production personnel attaches the front cover 120 to the heavy work, the production personnel will hold the front cover 120 and tear the front cover 120, and the composite adhesive layer 150 will be separated from the display panel 140. Because the second adhesive layer 250 is weakly viscous, the second adhesive layer 250 does not leave residual glue on the display panel 140, and it is very simple and labor-saving to tear the front cover 120. The first adhesive layer 230 is strongly viscous, so that the first adhesive layer 230 will firmly adhere to the front cover 120 during rework, and there is no problem of degumming. The first adhesive layer 230 is strongly viscous, and the second adhesive layer 250 is weakly viscous. When the production personnel rework, the front cover 120 and the composite adhesive layer 150 can still be firmly adhered, and the composite adhesive layer 150 is not The residual glue is left on the display panel 140, so that the assembly speed of the touch display 100 can be effectively improved.

According to another embodiment of the present invention, the first adhesive layer 230 is a polyethylene terephthalate (PET) double-sided adhesive layer comprising two layers of polymethyl methacrylate layer 234 and a PET layer 232, PET. The layer 232 is between the polymethyl methacrylate layers 234, one of the polymethyl methacrylate layers 234 is adhered to the front cover 120, and the other layer is adhered to the buffer layer 240. The first adhesive layer 230 has strong adhesion and heat resistance, and is suitable for bonding and fixing materials such as metal, plastic sheet, glass, paper, foam, etc., and is therefore suitable for LCD nameplates, notebook computers, mobile phones, PDAs. Wait for the display of the border of the screen component to be fixed. According to another embodiment of the present invention, the buffer layer 240 is a foam layer made of polyurethane. The foam layer of the buffer layer 240 is made of an elastic material, and can absorb the click force F caused by the user, so that the touch display 100 can be prevented from being partially degummed due to the click force F, so that the touch display is enabled. The life of the device 100 is longer. According to another embodiment of the present invention, the second adhesive layer 250 is a PET double-sided adhesive layer comprising an adhesive layer 252, a PET layer 254, and an acrylic layer 256. The PET layer 254 is located between the adhesive layer 252 and the acrylic layer 256, the adhesive layer 252 is adhered to the display panel 140, and the acrylic layer 256 is adhered to the buffer layer 240. The second adhesive layer 250 has a low adhesion and can be adhered for a long time, and has no adhesive property after being removed. The adhesive display panel 140 can prevent gaps between the adhesive layer and the display panel 140 to achieve dustproof and anti-fog effects.

Please refer to Figure 3 and Figure 5. Figure 5 is a schematic view showing a composite adhesive layer in accordance with another embodiment of the present invention. In accordance with another embodiment of the present invention, the composite adhesive layer 150' includes a fourth adhesive layer 260 and a fifth adhesive layer in addition to the first, second, and second adhesive layers 230, 240, 250 previously described. The layer 270, the fourth adhesive layer 260 is adhered between the first adhesive layer 230 and the fifth adhesive layer 270, and the fifth adhesive layer 270 is adhered between the fourth adhesive layer 260 and the buffer layer 240. In other words, in this embodiment, the composite adhesive layer 150' is formed by contacting the adhesive layer of the front cover 120 to the adhesive layer contacting the display panel 140, in order to be the first adhesive layer 230, the fourth adhesive layer 260, and the first The fifth adhesive layer 270, the buffer layer 240, and the second adhesive layer 250.

According to another embodiment of the present invention, the first adhesive layer 230 is a PET double-sided adhesive layer comprising two layers of polymethyl methacrylate layer 234 and a PET layer 232, and the PET layer 232 is located on the polymethyl methacrylate layer. Between 234, one of the layers of polymethyl methacrylate layer 234 is adhered to the front cover 120, and another layer of the polymethyl methacrylate layer 234 is adhered to the fourth adhesive layer 260. According to another embodiment of the invention, the fourth adhesive layer 260 is a polycarbonate layer. fourth Adhesive layer 260 is an opaque, environmentally-friendly black flame-retardant polycarbonate film that meets the European Union's Restriction of Hazardous Substances (ROHS) and strict International Safety Certification (UL). Can be widely used in power supply, TV, display, business machine and other suitable insulation and shielding. According to another embodiment of the present invention, the fifth adhesive layer 270 is a double-sided adhesive layer of a tissue substrate comprising a tissue layer 272 and two layers of acrylic adhesive layer 274, and the tissue layer 272 is disposed between the acrylic adhesive layers 274. One layer of the acrylic adhesive layer 274 is adhered to the fourth adhesive layer 260, and the other layer of the acrylic adhesive layer 274 is adhered to the buffer layer 240. The fifth adhesive layer 270 is made of cotton paper as a base material, has excellent dimensional stability for tape cutting processing, and has excellent workability with bonding and punching processing, and the acrylic adhesive layer 274 is suitable for bonding various surfaces.

According to another embodiment of the present invention, the buffer layer 240 is a foam layer made of polyurethane. The foam layer of the buffer layer 240 is made of an elastic material, and can absorb the click force F caused by the user, so that the touch display 100 can be prevented from being partially degummed due to the click force F, so that the touch display 100 is Longer life. According to another embodiment of the present invention, the second adhesive layer 250 is a PET double-sided adhesive layer comprising an adhesive layer 252, a PET layer 254, and an acrylic layer 256. The PET layer 254 is located between the adhesive layer 252 and the acrylic layer 256, the adhesive layer 252 is adhered to the display panel 140, and the acrylic layer 256 is adhered to the buffer layer 240. The second adhesive layer 250 has a low adhesion and can be adhered for a long time, and has no adhesive property after being removed. The adhesive display panel 140 can prevent gaps between the adhesive layer and the display panel 140 to achieve dustproof and anti-fog effects.

When the touch display of the present invention is assembled, the production personnel will cover the front cover Align the outer frame of the back cover and attach the front cover to the back cover. However, when the production personnel inevitably have stickers or stickers, the composite adhesive layer of the present invention is specially designed so that the production personnel can continue to rework. The manufacturer can pull the front cover up and then align the front cover to the outer frame of the back cover, and no residual glue remains on the display panel. When the front cover of the present invention is sealingly fixed to the display panel, moisture or dust in the accommodating space formed by the back cover cannot enter the display panel due to the surrounding of the composite adhesive layer and blocking the passage of moisture or dust. The illuminating surface, so the picture can maintain a good display and avoid malfunction. When the user clicks on the touch panel with a finger, a click force is applied to the touch panel. The composite adhesive layer of the touch display of the invention can absorb the click force caused by the user, thereby protecting the touch display without causing partial debonding due to the click force, so that the life of the touch display is longer. The composite adhesive layer of the present invention uses a large amount of PET material, and PET has excellent tensile properties, so that even if the operator applies a tensile force when attaching the composite adhesive layer, the composite adhesive layer is not deformed.

100‧‧‧Touch display

110‧‧‧Back cover

120‧‧‧ front cover

130‧‧‧Touch panel

132‧‧‧Confined space

140‧‧‧ display panel

150‧‧‧Composite adhesive layer

170‧‧‧ accommodating space

220‧‧‧Glossy

320‧‧‧ Direction

F‧‧‧Click force

Claims (10)

A touch-sensitive display includes: a back cover having an outer frame and a receiving space; a front cover having an opening, the front cover being aligned and attached to the outer frame of the back cover; a panel is fixed to the outer edge of the front cover and aligned with the opening of the front cover; a display panel disposed in the receiving space in the back cover, the display panel is aligned with the opening; and a composite adhesive a layer surrounding the inner edge of the front cover and aligned with the edge of the display panel, so that the front cover is sealingly fixed to the display panel, the composite adhesive layer comprising a first adhesive layer, a buffer layer and a second adhesive layer, the first adhesive layer is adhered to the front cover, the buffer layer is located between the first adhesive layer and the second adhesive layer, and the buffer layer is composed of an elastic buffer material, the second adhesive layer The layer is adhered to the display panel, and the first adhesive layer is more viscous than the second adhesive layer. The touch display of claim 1, wherein the first adhesive layer is a polyethylene terephthalate (PET) double-sided adhesive layer comprising two layers of polymethyl methacrylate layer and a PET a layer, the PET layer is located between the polymethyl methacrylate layers, one of the polymethyl methacrylate layers is adhered to the front cover, and the other layer is adhered to the buffer layer. The touch display of claim 1, wherein the buffer layer is a foam layer made of polyurethane. The touch display of claim 1, wherein the second adhesive layer is a PET double-sided adhesive layer comprising an adhesive layer, a PET layer and an acrylic layer, the PET layer being located on the adhesive layer and Between the acrylic layers, the adhesive layer adheres to the display panel, and the acrylic layer adheres to the buffer layer. The touch display device of claim 1, wherein the composite adhesive layer further comprises a fourth adhesive layer and a fifth adhesive layer, the fourth adhesive layer is adhered to the first adhesive layer and the fifth adhesive layer The fifth adhesive layer is adhered between the fourth adhesive layer and the buffer layer. The touch display of claim 5, wherein the first adhesive layer is a PET double-sided adhesive layer comprising two layers of polymethyl methacrylate layer and a PET layer, wherein the PET layer is located in the poly Between the methyl acrylate layers, one of the polymethyl methacrylate layers adheres to the front cover, and another layer of the polymethyl methacrylate layers adheres to the fourth adhesive layer. The touch display of claim 5, wherein the fourth adhesive layer is a polycarbonate layer. The touch display of claim 5, wherein the fifth adhesive layer is a double-sided adhesive layer of a tissue substrate, comprising a tissue layer and two layers of acrylic glue, the tissue layer being located on the acrylic adhesive Between the layers, one of the acrylic adhesive layers adheres to the fourth adhesive layer, and the other layers of the acrylic adhesive layer Adhered to the buffer layer. The touch display of claim 5, wherein the buffer layer is a foam layer made of polyurethane. The touch display of claim 5, wherein the second adhesive layer is a PET double-sided adhesive layer comprising a layer of adhesive, a PET layer and an acrylic layer, the PET layer being located on the adhesive layer and the Between the acrylic layers, the adhesive layer adheres to the display panel, and the acrylic layer adheres to the buffer layer.