Overlapped structure and touch display device using same

Abstract

The utility model relates to a laminated structure and a touch display device using the same. The laminated structure comprises a cover plate, an electronic paper color-changing film, an anti-interference layer and a touch module. The cover plate has a surface. The electronic paper color-changing film is arranged on the surface of the cover plate. The anti-interference layer is arranged on the side, away from the cover plate, of the electronic paper color-changing film. The touch module is arranged on the side, away from the electronic paper color-changing film, of the anti-interference layer. According to the utility model, the influence of the printing thickness of ink on the fitting degree of the screen and other components can be prevented, the problem of water vapor permeation is avoided, and the screen frame has diversified color changes.

Description

Technical Field

[0001] The utility model relates to a stacking structure and a touch display device using the same. Background Art

[0002] In traditional touch display devices, in order to cover the circuit design, the frame ink printing method is generally adopted, and the circuit is covered with black ink on the back of the glass screen. However, since the ink printing color is fixed, mostly black, the appearance is inevitably too monotonous, and the printing thickness will also affect the fit between the screen and other components, and may cause problems such as bubbles.

[0003] Therefore, there is a need for a novel method of shielding circuits on the screen border to replace the traditional border ink printing. Utility Model Content

[0004] The utility model relates to a laminated structure, comprising a cover plate, an electronic paper color-changing film, an anti-interference layer and a touch module. The cover plate has a surface. The electronic paper color-changing film is arranged on the surface of the cover plate. The anti-interference layer is arranged on a side of the electronic paper color-changing film away from the cover plate. The touch module is arranged on a side of the anti-interference layer away from the electronic paper color-changing film.

[0005] In one embodiment of the present invention, a frame area is defined on the cover plate, and the electronic paper color-changing film is arranged corresponding to the frame area.

[0006] In one embodiment of the present invention, the electronic paper color-changing film is frame-shaped.

[0007] In one embodiment of the present invention, the anti-interference layer is arranged in a frame area corresponding to the frame area on a side of the electronic paper color-changing film away from the cover plate.

[0008] In one embodiment of the present invention, the anti-interference layer is frame-shaped.

[0009] In one embodiment of the present invention, a display area surrounded by a frame area is further defined on the cover plate, and the touch module is arranged at least corresponding to the display area on a side of the anti-interference layer away from the electronic paper color-changing film.

[0010] In one embodiment of the present invention, it further comprises optical glue filled between the surface of the cover plate and the touch module.

[0011] In one embodiment of the present invention, the electronic paper color-changing film, the anti-interference layer and the outer periphery of the touch module are coated with waterproof glue.

[0012] In one embodiment of the present invention, three circuit boards are further included, which are respectively connected to the electronic paper color-changing film, the anti-interference layer and the touch module.

[0013] The utility model also relates to a touch display device, comprising the above-mentioned stacked structure and a display module. The display module is arranged on a side of the touch module away from the cover plate.

[0014] In summary, the utility model provides a stacked structure and a touch display device including the same, using an electronic paper color-changing film as a screen frame to replace the traditional ink printing shielding layer, which can not only prevent the ink printing thickness from affecting the fit between the screen and other components and avoid the problem of moisture infiltration into the internal components, but also will not be too bulky when attached to the screen, allowing the screen frame to be electronically controlled, and the colors become more diverse and brighter. The touch display device of the utility model can also be designed with different colors and frame patterns according to the user's personal preferences. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional schematic diagram of a stacked structure according to an embodiment of the utility model;

[0016] Figure 2A It is a top view of a component of a superimposed structure according to an embodiment of the utility model;

[0017] Figure 2B is a side view of a component of a stacked structure according to an embodiment of the utility model;

[0018] Figure 3 It is a partial enlarged cross-sectional view of a stacked structure according to an embodiment of the utility model;

[0019] Figure 4 is a cross-sectional schematic diagram of a stacked structure according to an embodiment of the utility model;

[0020] Figure 5 A schematic cross-sectional view of a touch display device according to an embodiment of the present invention.

[0021]

Explanation of symbols

[0022] 100: Overlapping structure

[0023] 101,102,103,104,107: Optical adhesive

[0024] 105:Viscose

[0025] 106: Waterproof glue

[0026] 110: Cover

[0027] 110a: Surface

[0028] 111: Shielding layer

[0029] 113: Border area

[0030] 115: Display area

[0031] 120: Electronic paper color-changing film

[0032] 130: Anti-interference layer

[0033] 140: Touch module

[0034] 151,153,155: Circuit board

[0035] 160: Display module

[0036] 200: Touch display device DETAILED DESCRIPTION

[0037] The following will disclose multiple embodiments of the utility model with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these practical details are not necessary. In addition, in order to simplify the drawings, some commonly used structures and elements will be illustrated in a simple schematic manner in the drawings. The same reference numerals will be used to represent the same or similar elements in all drawings.

[0038] Additionally, spatially relative terms, such as "below," "below," "lower," "above," "higher," and the like, may be used herein to facilitate describing the relationship of one element or feature to another element or feature as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0039] In actual use, the screen of a touch display device usually has a black border area, which is generally a shielding layer formed by printing with traditional ink to shield the circuits in the device. However, in order to effectively shield the circuits, the shielding layer is usually printed with black ink, which looks monotonous in appearance. Moreover, traditional ink printing is to repeatedly apply ink layer by layer on the same surface of the screen cover. The coating thickness may also cause the screen to fit poorly with other components inside the device, leading to the problem of water vapor infiltration.

[0040] Therefore, the present invention provides a stacked structure and a touch display device including the stacked structure. In some embodiments of the present invention, an electronic paper color-changing film is used to replace traditional ink printing. The electronic paper color-changing film is not only thin and convenient, but can also be freely cut into any shape, and can achieve color change effects such as color gradient change or flashing, making the color of the screen frame richer.

[0041] See also Figure 1 , Figure 1 FIG. 1 is a cross-sectional schematic diagram of a stacked structure 100 according to an embodiment of the present invention. Figure 1 In the embodiment, the stacked structure 100 includes a cover plate 110 , an electronic paper color-changing film 120 , an anti-interference layer 130 and a touch module 140 .

[0042] Please also refer to Figure 2A and Figure 2B . Figure 2A It is a top view of some components of a stacked structure 100 according to one embodiment of the present invention. Figure 2B FIG. 1 is a side view of some components of a stacked structure 100 according to an embodiment of the present invention.

[0043] exist Figure 1 In the embodiment, the cover plate 110 has a shielding layer 111. In some embodiments, the cover plate 110 may be a glass cover plate or a plastic cover plate, but the present invention is not limited thereto. In some embodiments, the shielding layer 111 is an ink printing layer for shielding the circuit board 151, the circuit board 153 and the circuit board 155, and is disposed on a surface 110a of the cover plate 110. In some embodiments, the shielding layer 111 is a black ink printing layer. Figure 2A In FIG. 2B , the shielding layer 111 is disposed on two sides of the cover plate 110 that are farther from each other. In FIG. 2B , the shielding layer 111 has only an area that can shield the circuit board 153 (this element represents other circuit boards).

[0044] exist Figure 1 In the embodiment, the electronic paper color-changing film 120 is attached to the surface 110a of the cover plate 110 via the optical adhesive 101, and is located on the same surface as the shielding layer 111. In some embodiments, the electronic paper color-changing film 120 can present a single color (e.g., red), or a gradient of a single color (e.g., from white to red), or multiple colors, but the utility model is not limited thereto. In some embodiments, the electronic paper color-changing film 120 can be a color-changing electronic paper of the Prism series of E Ink Holdings Inc., but the utility model is not limited thereto.

[0045] exist Figure 2AIn the embodiment, the cover plate 110 defines a frame area 113. The electronic paper color-changing film 120 is disposed on the surface 110a of the cover plate 110 corresponding to the frame area 113. In some embodiments, the electronic paper color-changing film 120 is frame-shaped, but the present invention is not limited thereto. In some embodiments, the frame area 113 of the cover plate 110 is defined by the orthographic projection range of the electronic paper color-changing film 120 on the cover plate 110, but the present invention is not limited thereto. The cover plate 110 further defines a display area 115 surrounded by the frame area 113.

[0046] In some embodiments, the optical glue 101 may be an optically clear adhesive (OCA), which is a special adhesive used to bond transparent optical elements, and has the advantages of being colorless and transparent, having a light transmittance of more than 95%, having good bonding strength, being curable at room temperature or medium temperature, and having a small curing shrinkage. The optical glue 101 may also be a liquid optical glue (OCR), which is also called liquid optical glue or water glue because it is liquid, and has the characteristics of good fluidity, no restrictions on bonding materials and shapes, and can meet the needs of filling curved surfaces and step differences, but the utility model is not limited to this.

[0047] exist Figure 1 In the embodiment, the anti-interference layer 130 corresponds to the frame area 113 (please refer to Figure 2A ) is disposed on a side of the electronic paper color-changing film 120 away from the cover plate 110. The anti-interference layer 130 is attached to one side of the electronic paper color-changing film 120 via the optical adhesive 102. In some embodiments, the anti-interference layer 130 is frame-shaped, but the utility model is not limited thereto. The anti-interference layer 130 can be any layer with anti-electromagnetic interference effect in the conventional technology in the art. The detailed description of the optical adhesive 102 is the same as that of the optical adhesive 101, and will not be repeated here.

[0048] exist Figure 1 In the embodiment, the touch module 140 at least corresponds to the display area 115 (please refer to Figure 2A ) is disposed on the side of the anti-interference layer 130 away from the electronic paper color-changing film 120. The touch module 140 is attached to one side of the anti-interference layer 130 via the optical adhesive 103. The touch module 140 can be any touch module with a touch function known in the art. The detailed description of the optical adhesive 103 is the same as that of the optical adhesive 101, and will not be repeated here.

[0049] exist Figure 1 In the embodiment, there is a display area 115 (please refer to FIG. Figure 2A) is defined by the orthographic projection. Since the electronic paper color-changing film 120 and the anti-interference layer 130 are frame-shaped and correspond to the frame area 113 of the cover plate 110 (please refer to Figure 2A ) is set, so there is a blank space within the range of the display area 115.

[0050] In some embodiments, optical glue 104 is filled between the surface 110a of the cover plate 110 on which the electronic paper color-changing film 120 is provided and the touch module 140, so that the cover plate 110 and the touch module 140 are seamlessly bonded together, which is the so-called "full-bonding" design. Full-bonding can have the effect of waterproof and dustproof, and can still provide excellent display effects under strong light or direct sunlight. In some embodiments, optical glue 104 is not filled between the cover plate 110 and the touch module 140, which is a "frame-bonding" design. Since there is an air layer in the middle of the frame-bonding, it is not only easy to get dust, but also light loss caused by light reflection will lead to poor screen display effect. The detailed description of optical glue 104 is the same as that of optical glue 101, which will not be repeated here.

[0051] exist Figure 1 In the embodiment, the stacked structure 100 further includes a circuit board 151, a circuit board 153 and a circuit board 155, which are respectively connected to the electronic paper color-changing film 120, the anti-interference layer 130 and the touch module 140, but the present invention is not limited thereto. Figure 2A and Figure 2B In the embodiment, two opposite sides of the stacked structure 100 that are farther apart may each have a circuit board, and the number of configurations may be adjusted according to actual use requirements.

[0052] See also Figure 3 , Figure 3 FIG. 1 is a partially enlarged cross-sectional view of a stacked structure 100 according to an embodiment of the present invention. Figure 3 In the embodiment, the anti-interference layer 130 and the touch module 140 are retracted toward the center of the stacked structure 100 compared to the electronic paper color-changing film 120. The circuit board 151 is connected to the electronic paper color-changing film 120 via adhesive 105. The circuit board 153 is connected to the anti-interference layer 130 via optical adhesive 103, and the circuit board 155 is connected to the touch module 140 via optical adhesive (not shown).

[0053] In some implementations, the circuit boards 151, 153, and 155 are flexible circuit boards that can be bent and configured as needed. Figure 3In the embodiment, the circuit board 151, the circuit board 153 and the circuit board 155 are configured to be bent at 90 degrees and folded under the stacked structure 100 (not shown), and do not exceed the range of the positive projection of the shielding layer 111. Through the bendable design of the flexible circuit board, the circuit board is bent downward at 90 degrees from the connection position or not far from the connection position and folded to reduce the area required for the shielding layer 111, and at the same time achieve the purpose of narrow frame design, but the utility model is not limited to this.

[0054] In some embodiments, the adhesive 105 may be 3M VHB. TM The tape (very high bond) is a double-sided foam tape whose main component is acrylic. In the process, the acrylic adhesive is foamed to form a foam main structure, and excellent acrylic adhesive is formed on both the upper and lower surfaces at the same time, but the utility model is not limited to this.

[0055] See also Figure 4 , Figure 4 1 is a cross-sectional schematic diagram of a stacked structure 100 according to an embodiment of the present invention. It should be noted that: Figure 4 The circuit board 151, the circuit board 153 and the circuit board 155 are omitted, but it does not mean that these circuit boards are not present. They are omitted only for the convenience of description. Figure 4 In the embodiment, the outer periphery of the electronic paper color-changing film 120, the anti-interference layer 130 and the touch module 140 is covered with a waterproof glue 106. The waterproof glue 106 can be a UV waterproof glue, which is a transparent semi-solid, has the characteristics of high transparency, waterproofness, and yellowing resistance, and is suitable for gap filling to prevent water vapor from penetrating.

[0056] In the process of the laminated structure, the electronic paper color-changing film must be cut to meet the requirements of the laminated structure. After cutting, the originally sealed electronic paper color-changing film will have an unsealed gap on the cut surface, causing water vapor to enter the interior. If the edge protection is done by laminating, not only will the connected circuit board be unable to bend, making it difficult to make a narrow frame design, but it will also affect the appearance. Therefore, in some embodiments of the utility model, after the laminated structure 100 is completed, a waterproof glue 106 is applied to the outer periphery of the electronic paper color-changing film 120, the anti-interference layer 130 and the touch module 140 to prevent the problem of water vapor infiltration without affecting the appearance and the bending design of the circuit board.

[0057] See also Figure 5 , Figure 5 A cross-sectional diagram of a touch display device 200 according to an embodiment of the present invention. Figure 5In the embodiment, the touch display device 200 includes the stacked structure 100 and the display module 160 as described above. The display module 160 is disposed on a side of the touch module 140 away from the cover plate 110. The display module 160 is attached to a side of the touch module 140 by an optical adhesive 107. The display module 160 can be any display module with a display function according to the conventional technology in the art. The detailed description of the optical adhesive 107 is the same as that of the optical adhesive 101, and will not be repeated here.

[0058] In summary, the touch display device of the present invention includes the stacked structure of the present invention, uses the electronic paper color-changing film as the screen frame, and replaces the traditional ink printing shielding layer, which can not only prevent the ink printing thickness from affecting the fit between the screen and other components, and avoid the problem of water vapor infiltrating the internal components, but also will not be too bulky when attached to the screen, and the screen frame can be controlled electronically, and the colors become more diverse and brighter. The touch display device of the present invention can also be designed with different colors and frame patterns according to the user's personal preferences.

[0059] The above content summarizes the features of several embodiments so that those skilled in the art can better understand the aspects of the present invention. Those skilled in the art should understand that the above content can be easily used as a basis for designing or modifying other changes without departing from the spirit and scope of the present invention to implement the same purpose and / or achieve the same advantages of the embodiments introduced in the present invention. The above content should be understood as an example of the present invention, and its scope of protection should be based on the claims.

Claims

1. A stacked structure, characterized in that: include: a cover plate having a surface; An electronic paper color-changing film is disposed on the surface; An anti-interference layer is arranged on a side of the electronic paper color-changing film away from the cover plate; as well as A touch module is arranged on a side of the anti-interference layer away from the electronic paper color-changing film.

2. The stacked structure according to claim 1, characterized in that: A frame area is defined on the cover plate, and the electronic paper color-changing film is arranged corresponding to the frame area.

3. The stacked structure according to claim 2, characterized in that: The electronic paper color-changing film is frame-shaped.

4. The stacked structure according to claim 2, characterized in that: The anti-interference layer is arranged on the side of the electronic paper color-changing film away from the cover plate corresponding to the frame area.

5. The stacked structure according to claim 4, characterized in that: The anti-interference layer is frame-shaped.

6. The stacked structure according to claim 2, characterized in that: The cover plate further defines a display area surrounded by the frame area, and the touch module is at least arranged on the side of the anti-interference layer away from the electronic paper color-changing film corresponding to the display area.

7. The stacked structure according to claim 6, characterized in that: It further comprises an optical glue filled between the surface of the cover plate and the touch module.

8. The laminated structure according to claim 1, characterized in that: The electronic paper color-changing film, the anti-interference layer and the outer periphery of the touch module are coated with a waterproof glue.

9. The laminated structure according to claim 1, characterized in that: It further comprises three circuit boards, which are respectively connected to the electronic paper color-changing film, the anti-interference layer and the touch module.

10. A touch display device, characterized in that: include: A laminate structure according to any one of claims 1 to 9; and A display module is arranged on a side of the touch module away from the cover plate.

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