Display device

Abstract

The invention relates to a display device which comprises a supporting frame, a panel module and an adhesive layer structure. The adhesive layer structure is located between the supporting frame and the panel module. The adhesive layer structure comprises a first base material, a first adhesive layer and a second adhesive layer. The first substrate has a first surface and a second surface opposite to the first surface, wherein the first surface faces the support frame. The first adhesive layer is connected to the first surface and is directly or indirectly connected to the bearing surface of the support frame facing the first surface. The second adhesive layer is connected to the second surface and is directly or indirectly connected with the abutting surface, facing the second surface, of the panel module. Wherein the orthographic projection of the first adhesive layer on the first substrate and the orthographic projection of the second adhesive layer on the first substrate are at least partially staggered.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to a display device capable of preventing light leakage and dust invasion. Background Art

[0002] The panel module of the conventional display device rests on the bearing surface of the support frame, and the outer shell covers the edges of the support frame and the panel module for assembly. During assembly, since the panel module itself is easily affected by external forces, in order to prevent the outer shell from damaging the panel module, a certain gap is usually left between the outer shell and the panel module during assembly. However, when the liquid crystal display is in operation, it is easy for external dust to enter the display device through the gap, thereby reducing the display quality of the display device.

[0003] In order to prevent dust from entering the display device through the gap, the prior art sets double-sided tape on the panel module bearing surface on the support frame to close the gap. Although this can reduce the intrusion of dust into the display device, the double-sided tape exerts a pulling stress on the liquid crystal panel and causes light leakage. Therefore, there is still a need for a display device that can simultaneously reduce light leakage and dust intrusion to solve the defects of the prior art. Summary of the invention

[0004] In view of the defects and shortcomings of the prior art, an object of the present invention is to provide a display device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: A display device includes a support frame, a panel module and an adhesive layer structure. The adhesive layer structure is located between the support frame and the panel module, and the adhesive layer structure includes a first substrate, a first adhesive layer and a second adhesive layer. The first substrate has a first surface and a second surface opposite to the first surface, wherein the first surface faces the support frame. The first adhesive layer is connected to the first surface and directly or indirectly connected to the bearing surface of the support frame facing the first surface. The second adhesive layer is connected to the second surface and directly or indirectly connected to the abutting surface of the panel module facing the second surface. Among them, the orthographic projection of the first adhesive layer on the first substrate and the orthographic projection of the second adhesive layer on the first substrate are at least partially misaligned.

[0006] According to the display device of the present invention, since the orthographic projection of the first adhesive layer on the first substrate and the orthographic projection of the second adhesive layer on the first substrate are at least partially misaligned, when the adhesive layer structure is applied to the display device of the present invention, the first substrate can be directly attached to the panel module without excessively pulling the panel module to generate tensile stress, and the second adhesive layer can be attached to the panel module to prevent dust from entering the interior of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1A is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

[0008] Figure 1B is based on Figure 1A An enlarged schematic diagram of the glue layer structure of the embodiment.

[0009] Figure 2A is a schematic cross-sectional view of a display device according to another embodiment of the present invention.

[0010] Figure 2B is based on Figure 2A Schematic diagram of a partial cross section of area C in the middle.

[0011] Figure 2C is based on Figure 2A An enlarged schematic diagram of the glue layer structure of the embodiment.

[0012] Figure 3A is a schematic cross-sectional view of a display device according to yet another embodiment of the present invention.

[0013] Figure 3B is based on Figure 3A An enlarged schematic diagram of the glue layer structure of the embodiment.

[0014] Figure 4A is a schematic cross-sectional view of a display device according to yet another embodiment of the present invention.

[0015] Figure 4B is based on Figure 4A An enlarged schematic diagram of the glue layer structure of the embodiment.

[0016] Figure 5A is a schematic cross-sectional view of a display device according to yet another embodiment of the present invention.

[0017] Figure 5B is based on Figure 5A An enlarged schematic diagram of the glue layer structure of the embodiment.

[0018] Wherein, the reference numerals are:

[0019] 10, 10A, 10B, 10C, 10D: display device 20: panel module 21: substrate

[0020] 30, 30A, 30B, 30C, 30D: adhesive layer structure 22: abutment surface 23: end edge

[0021] 31: First substrate 32: First adhesive layer 33: Second adhesive layer

[0022] 34: Second substrate 35: Third adhesive layer 36: Third substrate

[0023] 40, 40A: support frame 41, 41A: bearing surface 42: side wall

[0024] 50: housing 60: backlight module 311: first surface

[0025] 312: second surface 331: third surface 332: fourth surface 361: fifth surface 362: sixth surface A, B, D: orthographic projection C: region G: gap L: stray light L1, L2, L3: length M: dotted line DETAILED DESCRIPTION

[0026] Various embodiments will be described below, and those skilled in the art should be able to easily understand the spirit and principles of the present invention by referring to the descriptions and accompanying drawings. However, although some specific embodiments are described in detail herein, these embodiments are only illustrative and are not to be considered as limiting or exhaustive in any respect. Therefore, for those skilled in the art, various changes and modifications to the present invention should be obvious and easily achievable without departing from the spirit and principles of the present invention.

[0027] In the embodiments of the present invention, "upper", "lower", "left", "right", "front" or "rear" is used herein to describe the relationship between one component and another component, and is only used to illustrate the orientation presented in the figure, and does not limit its actual position. The device in the drawings does not limit the orientation or direction of its components due to the flipping of the device.

[0028] Figure 1A is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention, Figure 1B is based on Figure 1A For an enlarged schematic diagram of the adhesive layer structure of the embodiment, please refer to Figure 1A and Figure 1B . The display device 10 includes a support frame 40, a panel module 20 and a glue layer structure 30, wherein the glue layer structure 30 is located between the support frame 40 and the panel module 20. The panel module 20, for example, includes optical components such as a substrate, an upper polarizer, and a lower polarizer, which belongs to the scope of the prior art and is not elaborated here. In detail, the panel module 20 has a substrate 21, the substrate 21 has a contact surface 22, the support frame 40 has a bearing surface 41 and a side wall 42 perpendicular to the bearing surface 41, the bearing surface 41 is connected to the side wall 42, wherein the glue layer structure 30 is located between the bearing surface 22 and the bearing surface 41. In addition, the substrate 21 of the panel module 20, for example, has an end edge 23, the end edge 23 is relative to the support frame 40, and the end edge 23 surrounds the effective area of ​​the display device 10 (such as Figure 2A The adhesive layer structure 30 is distributed along the extension direction of the edge 23 (ie, the side extension direction of the display device 10), and blocks the gap G (shown in FIG. Figure 2A ) to prevent dust or other external substances from penetrating. The adhesive layer structure 30 of this embodiment includes a first substrate 31, a first adhesive layer 32 and a second adhesive layer 33. Please refer to Figure 1BThe first substrate 31 has a first surface 311 and a second surface 312 opposite to the first surface 311. In addition, the first surface 311 is, for example, a bearing surface 41 facing the support frame 40, and the second surface 312 is, for example, a contact surface 22 facing the substrate 21, wherein the first adhesive layer 32 is adhered to the first surface 311 so that a portion of the first surface 311 can be adhered to the bearing surface 41 of the support frame 40, that is, a portion of the adhesive layer structure 30 is fixedly attached to the support frame 40. In this embodiment, the adhesive layer structure 30 has one end of the first adhesive layer 32 adhered to the bearing surface 41 of the support frame 40, and the second adhesive layer 33 adheres to the bearing surface 41 of the support frame 40. Attached to the second surface 312 so that part of the second surface 312 adheres to at least part of the panel module 20, for example, adheres to the abutting surface 22 of the substrate 21, and the abutting surface 22 of the substrate 21 of part of the panel module 20 abuts against the second surface 312. In this way, in this embodiment, the adhesive layer structure 30 has an end of the second adhesive layer 33 adhered to the abutting surface 22 of the substrate 21, so that parts of the adhesive layer structure 30 (for example, the two ends) are respectively fixed to the panel module 20 and the support frame 40.

[0029] Please continue to refer to Figure 1A and Figure 1B The first adhesive layer 32 has an orthographic projection A on the first substrate 31, and the second adhesive layer 33 has an orthographic projection B on the first substrate 31, wherein the orthographic projection A and the orthographic projection B are at least partially misaligned, that is, the orthographic projection A and the orthographic projection B do not overlap each other on the first substrate 31. In this way, when the adhesive layer structure 30 is adhered between the support frame 40 and the panel module 20, the bearing stress of the support frame 40 and the tensile stress of the panel module 20 given by the second adhesive layer 33 in the direction perpendicular to the first surface 311 do not overlap, thereby dispersing the stress of the panel module 20. In addition, since the second adhesive layer 33 can close the gap G of the display device 10, the display device 10 can stop dust at the adhesive layer structure 30 with the help of the second adhesive layer 33 and cannot penetrate into the display device 10. In addition, in the present embodiment, a portion of the second surface 312 of the first substrate 31 is directly adhered to the abutting surface 22 of the substrate 21 of the panel module 20 by means of the second adhesive layer 33, while the other portion is not adhered but directly abuts against the abutting surface 22. When the distance between the panel module 20 and the support frame 40 is changed by an external force, the first substrate 31 can still be bent without excessively pulling the panel module 20 and maintain the gap between the panel module 20 and the support frame 40 to block the stray light L (such as the stray light L generated by the backlight module) Figure 1A As shown) to reduce light leakage.

[0030] In this embodiment, the material of the first substrate 31 is, for example, polyimide (PI) or polyethylene terephthalate (PET). Since the first substrate 31 itself is a light-proof material, it can reduce the light leakage caused by the light escaping from the gap G. Figure 1A The area to the left of the middle dotted line M is the effective area of ​​the display device 10, and the adhesive layer structure 30 is preferably located outside the effective area of ​​the display device 10 to avoid affecting the image quality of the display device 10. In addition, the display device 10 may also include a housing (not shown), which is used to cover the adhesive layer structure 30 and the support frame 40 and is located outside the effective area to protect these components. The second adhesive layer 33 is closer to the edge 23 than the first adhesive layer 32 to match the design of substrates 21 of different types. In addition, in the direction perpendicular to the side wall 42, the second adhesive layer 33 is closer to the side wall 42 than the first adhesive layer 32 to match the design of the bearing surface 41 of the support frame 40 of different types. In addition, since the adhesive layer structure 30 of this embodiment only needs to use a first substrate 31 and two adhesive layers (the first adhesive layer 32 and the second adhesive layer 33), the display device 10 using the adhesive layer structure 30 can achieve the effect of reducing the overall thickness.

[0031] Figure 2A is a schematic cross-sectional view of a display device according to another embodiment of the present invention, Figure 2B is based on Figure 2A A partial cross-sectional enlarged schematic diagram of the middle area C, Figure 2C is based on Figure 2A For an enlarged schematic diagram of the adhesive layer structure of the embodiment, please refer to FIG. 2A to FIG. 2C The display device 10A is similar to the display device 10, and the same components are denoted by the same reference numerals, which will not be described in detail herein. Figure 2AThe area to the left of the middle dotted line M is the effective area of ​​the display device 10A, and the display device 10A includes a support frame 40, a panel module 20, a glue layer structure 30A, a housing 50, and a backlight module 60. The backlight module 60, for example, has optical components such as a light source, a light guide plate, a reflector, and an optical film, and can provide a uniform surface light source to the panel module 20, which belongs to the scope of the prior art and will not be described in detail here. The housing 50, for example, is a rigid material such as metal or plastic, and the housing 50 covers the support frame 40, part of the panel module 20, and the glue layer structure 30A, and the housing 50 and the glue layer structure 30A are located outside the effective area of ​​the display device 10A. The difference between the display device 10A and the display device 10 is that the adhesive layer structure 30A further includes a second substrate 34 and a third adhesive layer 35, wherein the second substrate 34 has a third surface 331 and a fourth surface 332 opposite to the third surface 331, the third surface 331 faces the first surface 311, the first adhesive layer 32 is adhered to the third surface 331, and the third adhesive layer 35 is adhered to the fourth surface 332 so that the fourth surface 332 is adhered to the support frame 40. Since the display device 10A is provided with the second substrate 34, the second substrate 34 can be used as a buffer material between the panel module 20 and the support frame 40 to prevent the panel module 20 from being damaged. In a preferred embodiment, the material of the second substrate 34 is rubber or foam, and in another preferred embodiment, the elastic modulus of the second substrate 34 is, for example, less than the elastic modulus of the first substrate 31, that is, the second substrate 34 is softer than the first substrate 31, so that the second substrate 34 provides a better buffering effect.

[0032] Please continue to refer to FIG. 2A to FIG. 2C , the first adhesive layer 32 has an orthographic projection A on the first substrate 31, and the second adhesive layer 33 has an orthographic projection B on the first substrate 31, wherein the orthographic projection A and the orthographic projection B are at least partially misaligned, that is, the orthographic projection A and the orthographic projection B do not overlap each other on the first substrate 31. In this way, similar to the display device 10, the bearing stress of the adhesive layer structure 30A in the direction perpendicular to the first surface 311 given by the panel module 20 to the bearing surface 41 of the support frame 40 and the tensile stress given by the second adhesive layer 33 to the panel module 20 do not overlap, thereby dispersing the stress of the panel module 20. In addition, in this embodiment, the orthographic projection of the third adhesive layer 35 on the first substrate 31 overlaps with the orthographic projection (that is, the orthographic projection A) of the first adhesive layer 32 on the first substrate 31, thereby providing the structural support required by the panel module 20 and absorbing the force from the panel module 20 when the panel module 20 is subjected to external force. The first adhesive layer 32 is closer to the edge 23 than the second adhesive layer 33 to match the design of different types of substrates 21. In addition, in the direction perpendicular to the side wall 42, the first adhesive layer 32 is closer to the side wall 42 than the second adhesive layer 33. In this way, the adhesive layer structure 30A as a whole can be supported at a position closer to the edge of the panel module 20 to match the design of the bearing surface 41 of the support frame 40 of different types.

[0033] Figure 3A is a cross-sectional schematic diagram of a display device according to yet another embodiment of the present invention, Figure 3B is based on Figure 3A For an enlarged schematic diagram of the adhesive layer structure of the embodiment, please refer to Figure 3A and Figure 3B . The display device 10B is similar to the display device 10 and the display device 10A, and the same components are represented by the same reference numerals and are not repeated here. The difference between the display device 10B and the display device 10 and the display device 10A is that the display device 10B is provided with a second substrate 34, and the second substrate 34 can serve as a buffer material between the panel module 20 and the support frame 40. In addition, in the direction perpendicular to the side wall 42, the first adhesive layer 32 is closer to the side wall 42 than the second adhesive layer 33 to match the bearing surface design of different support frames, and the first substrate 31 and the first adhesive layer 32 can provide appropriate protection when the panel module 20 is subjected to force.

[0034] Figure 4A is a cross-sectional schematic diagram of a display device according to yet another embodiment of the present invention, Figure 4B is based on Figure 4A For an enlarged schematic diagram of the adhesive layer structure of the embodiment, please refer to Figure 4A and Figure 4B . The display device 10C is similar to the display device 10, the display device 10A, and the display device 10B, and the same components are represented by the same reference numerals and are not repeated here. The difference between the display device 10C and the display device 10, the display device 10A, and the display device 10B is that the display device 10C is, for example, a display device with a narrow frame, and the width of the bearing surface 41A of the support frame 40A in the direction parallel to the first surface 311 is narrower than the bearing surface 41 of the aforementioned embodiment, and the glue layer structure 30C is located between the panel module 20 and the support frame 40A. In addition, in the direction parallel to the first surface 311, the length of the first substrate 31 of the glue layer structure 30C is L1, the length of the first glue layer 32 is L2, and the lengths of the second substrate 34 and the third glue layer 35 are both L3, and L1 is greater than L3, and L3 is greater than L2. When the adhesive layer structure 30C is disposed on the supporting surface 41A of the supporting frame 40A to support the panel module 20, the second substrate 34 can directly support at least a portion of the first substrate 31, that is, the third surface 331 directly contacts at least a portion of the first surface 311, thereby improving the buffering effect of the adhesive layer structure 30C.

[0035] Figure 5A is a cross-sectional schematic diagram of a display device according to yet another embodiment of the present invention, Figure 5B is based on Figure 5A For an enlarged schematic diagram of the adhesive layer structure of the embodiment, please refer to Figure 5A and Figure 5BThe display device 10D is similar to the display device 10, the display device 10A, the display device 10B, and the display device 10C. The same components are represented by the same reference numerals and are not described again. Similar to the display device 10C, the display device 10D is, for example, a display device with a narrow frame, and the width of the bearing surface 41A of the support frame 40A in the direction parallel to the first surface 311 is narrower than the bearing surface 41 of the aforementioned embodiment. The difference between the display device 10D and the display devices 10, 10A, 10B, and 10C is that the adhesive layer structure 30D further includes a third substrate 36, which is arranged side by side with the second substrate 34, and has a fifth surface 361 and a sixth surface 362 opposite to the fifth surface 361, wherein the third adhesive layer 35 is adhered to the fifth surface 361 so that the third substrate 36 is adhered to the support frame 40A, and the orthographic projection A of the first adhesive layer 32 on the first substrate 31 and the orthographic projection D of the third adhesive layer 35 on the first substrate at least partially overlap, so that the bearing stress from the panel module 20 can be smoothly transferred to the support frame 40A. In this embodiment, the third substrate 36 is arranged to bear the stress from the panel module 20 to support the panel module 20, wherein the material of the third substrate 36 is preferably rubber or foam, and the thickness of the third substrate 36 and the second substrate 34 in the direction parallel to the side wall 42 is different, for example, the second substrate 34 is thicker than the third substrate 36. In addition, in the direction parallel to the first surface 311, the length of the first substrate 31 of the adhesive layer structure 30D is L1, the length of the first adhesive layer 32 and the second substrate 34 are both L2, and the length of the third adhesive layer 35 is L3, and L1 is greater than L3, and L3 is greater than L2. When the adhesive layer structure 30D is disposed on the bearing surface 41A of the support frame 40A to support the panel module 20, the third substrate 36 can directly support at least a portion of the first substrate 31, that is, the sixth surface 362 will directly contact at least a portion of the first surface 311, thereby improving the buffering effect of the adhesive layer structure 30D.

[0036] In summary, in the display device of the present invention, since the orthographic projection of the first adhesive layer of the adhesive layer structure on the first substrate and the orthographic projection of the second adhesive layer on the first substrate are at least partially misaligned, when the adhesive layer structure is applied to the display device of the present invention, the first substrate can be directly attached to the panel module without excessively pulling the panel module to generate tensile stress, and the second adhesive layer can be attached to the panel module to prevent dust from entering the interior of the display device, so that the display device can achieve the effects of reducing light leakage and preventing dust from intruding at the same time.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A display device, characterized in that include: Support frame; Panel module; as well as A glue layer structure is located between the support frame and the panel module, wherein the glue layer structure includes: A first substrate having a first surface and a second surface opposite to the first surface, wherein the first surface faces the support frame; A first adhesive layer, connected to the first surface and directly or indirectly connected to a bearing surface of the support frame facing the first surface; A second adhesive layer, connected to the second surface and directly or indirectly connected to the abutting surface of the panel module facing the second surface; The orthographic projection of the first adhesive layer on the first substrate and the orthographic projection of the second adhesive layer on the first substrate are at least partially misaligned.

2. The display device according to claim 1, characterized in that The adhesive layer structure also includes: A second substrate having a third surface and a fourth surface opposite to the third surface, wherein the third surface faces the first surface, and the first adhesive layer is adhered to the third surface; The third adhesive layer is adhered to the fourth surface so that the fourth surface is adhered to the support frame.

3. The display device according to claim 2, characterized in that The adhesive layer structure also includes: The third substrate is arranged side by side with the second substrate and has a fifth surface and a sixth surface opposite to the fifth surface, wherein the third adhesive layer is adhered to the fifth surface so that the third substrate is adhered to the support frame.

4. The display device according to claim 3, characterized in that The orthographic projection of the first adhesive layer on the first substrate at least partially overlaps with the orthographic projection of the third adhesive layer on the first substrate.

5. The display device according to claim 2, characterized in that The elastic modulus of the second substrate is smaller than the elastic modulus of the first substrate.

6. The display device according to claim 1, characterized in that The panel module has an effective area, and the glue layer structure is located outside the effective area.

7. The display device according to claim 1, characterized in that It also includes a shell covering the adhesive layer structure and the supporting frame.

8. The display device according to claim 1, characterized in that The panel module has an end edge relative to the support frame, and the glue layer structure extends along the end edge.

9. The display device according to claim 8, characterized in that The first adhesive layer is closer to the end edge than the second adhesive layer.

10. The display device according to claim 8, characterized in that The second adhesive layer is closer to the end edge than the first adhesive layer.

Images