TWI746181B - Touch display device - Google Patents

Abstract

A touch display device includes a display module, a touch module and an optical unit. The touch module is bonded to the display module in a frame-attached manner, and a closed gap space is formed between the touch module and the display module. The gap space is in a vacuum state and has a thickness of 0 to 3 mm. The optical unit is arranged on at least one of the display module and the touch module and adjacent to the gap space. The optical unit includes an anti-reflective layer or an anti-glare layer or a combination of an anti-reflective layer and an anti-glare layer, wherein the anti-reflective layer The reflectivity of the reflective layer is less than 3%, and the haze of the anti-glare layer is between 4 and 60%.

Description

Touch display device

The present invention relates to a touch display device, in particular to a frame-attached touch display device.

The existing touch display device is mainly formed by bonding the display module and the touch module, and the bonding methods include frame bonding (mouth glue bonding) and full bonding. The existing frame attachment method uses double-sided tape to fix the display module and the four sides of the touch module. Since there is an air layer between the display module and the touch module, the light emitted by the display module passes through the air layer. Refraction, resulting in poor display effect. Full bonding is the use of optical glue to bond the display module and the touch module together in a seamless manner. Compared with the frame bonding method, it can provide a better display effect, but the manufacturing technology is more difficult and the yield rate is lower. , Resulting in higher production costs.

How to improve the display effect of the frame-mounted touch display device while maintaining the advantage of lower cost is a subject that needs improvement. Although there is currently a method to improve the display effect of the frame-mounted touch display device, an anti-reflection film is provided on at least one of the display module and the touch module on both sides of the air layer, but this method still cannot overcome the display effect. The distance between the module and the touch module is too close to easily cause the problem of Newton's rings. Therefore, a safe distance between the display module and the touch module is required to avoid generating Newton's rings and affecting the visual effect. As a result, the thickness of the touch display device cannot be reduced.

Therefore, one of the objectives of the present invention is to provide a touch display device that can solve the aforementioned problems.

Therefore, in some embodiments, the touch display device of the present invention includes a display module, a touch module, and an optical unit. The touch module is bonded to the display module in a frame-attached manner, and a closed gap space is formed between the touch module and the display module. The gap space is in a vacuum state and has a thickness of 0 to 3 mm. The optical unit is arranged on at least one of the display module and the touch module and adjacent to the gap space. The optical unit includes an anti-reflective layer or an anti-glare layer or a combination of an anti-reflective layer and an anti-glare layer, wherein the anti-reflective layer The reflectivity of the reflective layer is less than 3%, and the haze of the anti-glare layer is between 4 and 60%.

In some embodiments, a reinforcement unit is further included, and the reinforcement unit is connected to the peripheral side of the display module and the touch module to strengthen the connection between the display module and the touch module.

In some embodiments, the reinforcement unit includes an adhesive structure formed by curing liquid glue.

In some embodiments, the reinforcement unit includes a frame made of metal, and the frame has a first connection portion connected to the display module, a second connection portion connected to the touch module, and a connection The intermediate connecting portion of the first connecting portion and the second connecting portion.

In some embodiments, the first connecting portion is connected to an outer surface of the display module opposite to the gap space, and the second connecting portion is connected to an outer surface of the touch module opposite to the gap space.

In some embodiments, the first connecting portion is connected to an outer surface of the display module opposite to the gap space, and the second connecting portion is connected to an inner surface of the touch module adjacent to the gap space.

In some embodiments, the display module and the touch module are curved.

In some embodiments, the vacuum degree of the interstitial space is less than 0.1 atm.

The present invention has at least the following effects: by making the gap space in a vacuum state and having a thickness ranging from 0 to 3 mm, and collocation of the optical unit, not only can the distance between the display module and the touch module be reduced to reduce The overall thickness of the touch display device can avoid the generation of Newton rings, and greatly reduce the reflectivity of light passing through the gap space from the display module and the touch module to reduce light energy loss, thereby increasing color saturation Therefore, the touch display device can achieve a display effect equivalent to that of a fully bonded touch display device with a lower cost frame bonding process.

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

Referring to FIG. 1, a first embodiment of a touch display device 100 of the present invention includes a display module 1, a touch module 2 and an optical unit 3.

The touch module 2 is bonded to the display module 1 in a frame bonding manner, and a closed gap space S is formed between the touch module 2 and the display module 1. The gap space S is in a vacuum state and has a thickness of 0 to 3 mm. In this embodiment, the touch module 2 includes a protective cover 21 and a touch element 22, and the touch module 2 is attached to the display module 1 along the periphery with a double-sided adhesive 5, and The bonding is performed in a vacuum environment so that the gap space S is in a vacuum state, and a sealant 6 is arranged on the peripheral side of the gap space S to keep the gap space S in a vacuum. Preferably, the vacuum degree of the interstitial space S is less than 0.1 atm. The sealant 6 can be, for example, a moisture-curing polyurethane hot-melt adhesive (PUR adhesive).

The optical unit 3 is disposed on at least one of the display module 1 and the touch module 2 and adjacent to the gap space S. In this embodiment, the optical unit 3 is provided in the display module 1 and the touch module 2. The optical unit 3 includes an anti-reflective layer or an anti-glare layer or a combination of an anti-reflective layer and an anti-glare layer, wherein the reflectivity of the anti-reflective layer is less than 3%, and the haze of the anti-glare layer is between 4 and 60%. Specifically, the anti-reflection layer and the anti-glare layer may be films made separately, or a layered structure formed on the surface of the display module 1 and/or the touch element 22 directly by coating or plating. The optical unit 3 on one side (on one side of the display module 1 or the touch module 2) can have only an anti-reflection layer, or only an anti-glare layer, or both. When an anti-reflection layer is provided at the same time In the case of the anti-glare layer and the anti-glare layer, the anti-glare layer can be placed on the surface layer (adjacent gap space S). By keeping the gap space S in a vacuum and arranging the optical unit 3, the generation of Newton rings can be avoided when the thickness of the gap space S is small, and the light passing through the gap space S from the display module 1 can be greatly reduced. And the reflectivity of the touch module 2 to reduce the loss of light energy, thereby increasing the color saturation.

In order to make the combination of the display module 1 and the touch module 2 more stable, a reinforcement unit 4 may be included. The reinforcement unit 4 connects the peripheral sides of the display module 1 and the touch module 2 to Strengthen the connection between the display module 1 and the touch module 2. In this embodiment, the reinforcement unit 4 includes a frame 41 made of metal. The frame 41 has a first connecting portion 411 connected to the display module 1 and a second connecting portion 411 connected to the touch module 2 The connecting portion 412 and an intermediate connecting portion 413 connecting the first connecting portion 411 and the second connecting portion 412. The first connecting portion 411 is connected to the outer surface of the display module 1 opposite to the gap space S, and the second connecting portion 412 is connected to the outer surface of the touch module 2 opposite to the gap space S, and the The display module 1 and the touch module 2 are sandwiched between the first connection portion 411 and the second connection portion 412.

Referring to FIG. 2, the difference between the second embodiment of the touch display device 100 of the present invention and the first embodiment is that, in the second embodiment, the optical unit 3 is only provided in the display module 1, and the second embodiment The shape of the frame member 41 in this example is different from that of the frame member 41 of the first embodiment. In the second embodiment, the second connecting portion 412 is connected to the inner surface of the touch module 2 adjacent to the gap space S, and the second connecting portion 412 can be fixed to the touch module 2 by adhesive.

3, the difference between the third embodiment of the touch display device 100 of the present invention and the first embodiment is that the display module 1 and the touch module 2 are curved, and in the third embodiment The optical unit 3 is only disposed on the touch module 2, and the adhesive structure 42 formed by curing the liquid glue in the reinforcing unit 4 replaces the frame 41 made of metal. The liquid glue can be, for example, AB glue, acrylic type ( AA ) glue, polysulfide sealant, polyurethane glue, silicon glue, epoxy resin, etc.

In summary, by making the gap space S in a vacuum state and having a thickness ranging from 0 to 3 mm, and collocation of the optical unit 3, not only can the distance between the display module 1 and the touch module 2 be reduced To reduce the overall thickness of the touch display device 100, to avoid the generation of Newton rings, and to greatly reduce the reflectivity of light from the display module 1 through the gap space S and the touch module 2 to reduce light energy loss Therefore, the color saturation is improved, and the touch display device 100 can achieve a display effect equivalent to that of a fully bonded touch display device with a lower cost frame bonding process.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

100: Touch display device 1: Display module 2: Touch module 21: Protective cover 22: Touch components 3: Optical unit 4: Reinforcement unit 41: Frame 411: first connection part 412: second connection part 413: Intermediate connecting part 42: Glue structure 5: Double-sided tape 6: Sealant S: interstitial space

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a schematic diagram of the first embodiment of the touch display device of the present invention; 2 is a schematic diagram of the second embodiment of the touch display device of the present invention; and FIG. 3 is a schematic diagram of the third embodiment of the touch display device of the present invention.

100: Touch display device

1: Display module

2: Touch module

21: Protective cover

22: Touch components

3: Optical unit

4: Reinforcement unit

41: Frame

411: first connection part

412: second connection part

413: Intermediate connecting part

5: Double-sided tape

6: Sealant

S: interstitial space

Claims (8)

A touch display device, including: A display module; A touch module, which is bonded to the display module by frame bonding, and forms a closed gap space with the display module, the gap space is in a vacuum state and has a thickness of 0 to 3 mm; and An optical unit is located at least one of the display module and the touch module and adjacent to the gap space, the optical unit includes an anti-reflection layer or an anti-glare layer or a combination of an anti-reflection layer and an anti-glare layer, wherein The reflectance of the anti-reflection layer is less than 3%, and the haze of the anti-glare layer is between 4 and 60%. The touch display device according to claim 1, further comprising a reinforcement unit which connects the display module and the peripheral side of the touch module to strengthen the connection between the display module and the touch module. The touch display device according to claim 2, wherein the reinforcement unit includes an adhesive structure formed by curing liquid glue. The touch display device according to claim 2, wherein the reinforcement unit includes a frame made of metal, and the frame has a first connection portion connected to the display module and a second connection portion connected to the touch module. Two connecting parts and an intermediate connecting part connecting the first connecting part and the second connecting part. The touch display device according to claim 4, wherein the first connecting portion is connected to an outer surface of the display module opposite to the gap space, and the second connecting portion is connected to the touch module opposite to the gap space的外面。 The outer surface. The touch display device according to claim 4, wherein the first connecting portion is connected to an outer surface of the display module opposite to the gap space, and the second connecting portion is connected to the touch module adjacent to the gap space的内面。 The inner surface. The touch display device according to claim 1, wherein the display module and the touch module are curved. The touch display device according to claim 1, wherein the vacuum degree of the gap space is less than 0.1 atm.

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