Display device

Abstract

The invention discloses a display device which comprises a display module, and the display module comprises a display panel, a polaroid, a cover plate, a bonding layer and a protective layer. The display panel comprises a display part, a bending part and a binding part, and the bending part is connected with the display part and the binding part; the polaroid is arranged on one side, far away from the binding part, of the display part; the cover plate is arranged on one side, far away from the binding part, of the polaroid; the bonding layer is connected with the polaroid and the cover plate, and the distance from the bonding layer to the bending part is larger than the distance from the polaroid to the bending part; the protective layer covers the outer surface of the bending part, a part of the protective layer covers the display part, the protective layer is connected with the polaroid, and the surface, away from the binding part, of the part, covering the display part, of the protective layer is not higher than the surface, away from the binding part, of the polaroid. The display device has the advantage that the problem of poor appearance caused by bubbles of a display device in a conventional scheme can be solved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically to a display device. Background Technology

[0002] The display device includes a display panel, a polarizer, an adhesive layer, and a protective layer. The display panel includes a display portion, a bending portion, and a bonding portion. The bending portion is connected to the display portion and the bonding portion. The polarizer is disposed on the surface of the display panel. A cover plate is connected to the polarizer via the adhesive layer. The protective layer covers the outer surface of the bending portion and is connected to the polarizer. In conventional display devices, the protective layer near the polarizer has a protrusion that extends beyond the surface of the polarizer away from the bonding portion, causing air bubbles to form between the adhesive layer and the protrusion, resulting in an unsightly appearance of the display device. Summary of the Invention

[0003] Embodiments of this application provide a display device to improve the poor appearance of conventional display devices due to air bubbles.

[0004] Embodiments of this application provide a display device, including a display module, the display module comprising: The display panel includes a display part, a bending part, and a binding part, wherein the bending part is connected to the display part and the binding part; A polarizer is disposed on the side of the display unit away from the bonding portion; A cover plate, wherein the cover plate is disposed on the side of the polarizer away from the binding portion; An adhesive layer is connected to the polarizer and the cover plate, and the distance from the adhesive layer to the bend is greater than the distance from the polarizer to the bend. A protective layer covers the outer surface of the bent portion, a portion of the protective layer covers the display portion, the protective layer is connected to the polarizer, and a portion of the protective layer covering the display portion away from the bonding portion is not higher than a portion of the polarizer away from the bonding portion.

[0005] Furthermore, the protective layer includes a first protective portion and a second protective portion connected to the first protective portion. The first protective portion covers the outer surface of the bent portion, and the second protective portion covers a portion of the display portion. The surface of the second protective portion away from the bonding portion is not higher than the surface of the polarizer away from the bonding portion.

[0006] Furthermore, the edge of the adhesive layer near the bend has a first gap with the edge of the second protective portion, and the first gap is not less than 0.25 mm.

[0007] Furthermore, the thickness of the second protective part is greater than the thickness of the first protective part, and the difference between the thickness of the second protective part and the thickness of the first protective part is 20um~70um.

[0008] Furthermore, the surface of the second protective part away from the binding part is flush with the surface of the polarizer away from the binding part.

[0009] Furthermore, the display device also includes a middle frame and a first filler, wherein the display module is disposed on the middle frame, a portion of the cover plate, the sidewall of the adhesive layer, a portion of the polarizer, the protective layer, and the middle frame form a first filling cavity, the first filler is filled in the first filling cavity, and the first filler covers a portion of the cover plate, the sidewall of the adhesive layer, a portion of the polarizer, and a portion of the protective layer, and the elastic modulus of the first filler is greater than the elastic modulus of the adhesive layer.

[0010] Furthermore, the display module also includes: A first back plate is disposed on a surface of the bonding portion near the display portion; A second back plate is disposed on a surface of the display unit near the mounting portion; A heat dissipation buffer layer is disposed between the first back plate and the second back plate; Wherein, the adhesive layer and the polarizer do not extend beyond the edge of the heat dissipation buffer layer, and the distance from the edge of the adhesive layer near the bend to the bend is greater than the distance from the edge of the heat dissipation buffer layer near the bend to the bend.

[0011] Furthermore, the display module also includes: A first back plate is disposed on a surface of the bonding portion near the display portion; A second back plate is disposed on a surface of the display unit near the mounting portion; A heat dissipation buffer layer is disposed between the first back plate and the second back plate; The adhesive layer does not extend beyond the edge of the heat dissipation buffer layer, while the polarizer extends beyond the edge of the heat dissipation buffer layer.

[0012] Furthermore, the bent portion, together with the first back plate, the second back plate, and the heat dissipation buffer layer, forms a second filling cavity; The display device further includes a second filler, which fills the second filling cavity, and the elastic modulus of the second filler is less than that of the first filler.

[0013] Furthermore, the material of the first filler is optically transparent adhesive, and the material of the adhesive layer is optically transparent tape.

[0014] The beneficial effects of this application are: This application provides a display panel in which the distance from the adhesive layer to the bending portion is greater than the distance from the polarizer to the bending portion. A portion of the protective layer covers the display portion, the protective layer is connected to the polarizer, and a portion of the protective layer covering the display portion away from the bonding portion is not higher than a portion of the polarizer away from the bonding portion. Compared with conventional display devices, this avoids the formation of a protrusion beyond the top surface of the polarizer on the side of the protective layer near the polarizer, and allows the adhesive layer to form a predetermined distance from the edge of the protective layer. This prevents air bubbles from forming at the connection between the adhesive layer, the polarizer, and the protective layer in conventional display devices, thereby improving the appearance of the display device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a conventional display device; Figures 2a-2b This is a schematic diagram illustrating the appearance defects caused by the siphon effect between the protective layer and the adhesive layer of the display device. Figure 3 This is a top view of the display device of this application; Figure 4 yes Figure 3 A schematic diagram of the first structure of the display device AA' shown; Figure 5 yes Figure 4 The diagram shown is a display device without the first filler and the second filler. Figure 6 yes Figure 3 A schematic diagram of the display module of the display device shown; Figure 7 yes Figure 3 A schematic diagram of the second structure of the AA' display device shown.

[0016] Explanation of reference numerals in the attached figures: 10-Display device; 100-Display module; 110-Display panel; 111-Display part; 112-Bending part; 113-Binding part; 120-Polarizing film; 130-Cover plate; 140-Adhesive layer; 150-Protective layer; 151-First protective part; 152-Second protective part; 160-First back plate; 170-Second back plate; 180-Heat dissipation buffer layer; 181-Heat dissipation sub-layer; 182-Buffer sub-layer; 200-Middle frame; 300-First filler; 400-Second filler.

[0017] 101-Protective film; 102-Display panel; 1021-Display part; 1022-Bending part; 1023-Binding part; 103-Polarizing film; 104-Adhesive layer; 105-Protective layer; 1051-Protrusion; 106-Cover plate.

[0018] Q1 - First filling cavity; Q2 - Second filling cavity. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The technical solutions described below are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0020] Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different technical features. The terms "multiple" and similar words indicate two or more unless otherwise expressly specified.

[0021] Embodiments of this application provide a display device 10, with reference to... Figure 3 , Figure 4 , Figure 5 and Figure 6 The display device includes a display module 100, which includes a display panel 110, a polarizer 120, a cover plate 130, an adhesive layer 140, and a protective layer 150.

[0022] Specifically, the display panel 110 includes a display portion 111, a bending portion 112, and a bonding portion 113, wherein the bending portion 112 is connected to the display portion 111 and the bonding portion 113; the polarizer 120 is disposed on the side of the display portion 111 away from the bonding portion 113; the cover plate 130 is disposed on the side of the polarizer 120 away from the bonding portion 113; and the adhesive layer 140 is connected to the polarizer 120 and the cover plate 130. The distance from 0 to the bending portion 112 is greater than the distance from the polarizer 120 to the bending portion 112; the protective layer 150 covers the outer surface of the bending portion 112, a portion of the protective layer 150 covers the display portion 111, the protective layer 150 is connected to the polarizer 120, and a portion of the protective layer covering the display portion 111 away from the binding portion 113 is not higher than a portion of the polarizer 120 away from the binding portion 113.

[0023] refer to Figure 1The display device includes a display panel 102, a polarizer 103, an adhesive layer 104, and a protective layer 105. The display panel 102 includes a display portion 1021, a bending portion 1022, and a bonding portion 1023. The bending portion 1022 is connected to the display portion 1021 and the bonding portion 1023. The polarizer 103 is disposed on the surface of the display panel 102. A cover plate 106 is connected to the polarizer 103 through the adhesive layer 104. The protective layer 105 covers the outer surface of the bending portion 1022 and is connected to the polarizer 103. In the conventional manufacturing process of the display device, the polarizer 103 is first attached to the display portion 1021 of the display panel 102. Then, UV adhesive is sprayed onto the display panel 102 to create a portion of the protective layer 105 located on the display portion. After that, the cover plate 106 is attached to the polarizer 103 through the adhesive layer 104. Finally, the UV adhesive is cured using UV light. Before the cover plate 106 is attached, a layer of isolation film is provided on the surface of the polarizer 103 away from the bonding part 1023 to temporarily protect the polarizer 103. Under the effect of siphon effect, a part of the protective layer 105 on the display part will form a protrusion 1051 on the side of the polarizer 103 that extends beyond the surface of the polarizer 103 away from the bonding part. This causes air bubbles to be generated between the adhesive layer 104 and the protrusion 1051, resulting in a problem of poor appearance of the display device. Therefore, the technical solution of this application provides a display device 10, which sets the distance from the adhesive layer 140 to the bending portion 112 to be greater than the distance from the polarizer 120 to the bending portion 112. A portion of the protective layer 150 covers the display portion 111, the protective layer 150 is connected to the polarizer 120, and a portion of the protective layer covering the display portion 111 away from the bonding portion 113 is not higher than the surface of the polarizer 120 away from the bonding portion 113. Compared with the conventional solution of the display device 10, on the one hand, it avoids the formation of a protrusion beyond the top surface of the polarizer 120 on the side of the protective layer 150 near the polarizer 120, and on the other hand, it allows the adhesive layer 140 to form a preset distance with the edge of the protective layer 150. Thus, the situation of air bubbles being generated between the adhesive layer 140 and the polarizer 120 and the protective layer 150 in the conventional solution of the display device 10 is avoided, thereby improving the problem of poor appearance of the display device 10.

[0024] In this embodiment, reference Figure 4 The surface of the second protective part 152 away from the binding part 113 is flush with the surface of the polarizer 120 away from the binding part 113.

[0025] It is understood that in this embodiment, after the polarizer 120 is attached to the display portion 111 of the display panel 110, the adhesive layer 140 is first made, and then the protective layer 150 on the display portion is made. This ensures that the UV adhesive used for making the adhesive does not extend beyond the surface of the polarizer 120 away from the bonding portion 113 due to the siphon effect. As a result, a portion of the protective layer 150 covering the display portion 111 is flush with the surface of the polarizer 120 away from the bonding portion 113.

[0026] In this embodiment, reference Figure 4 The protective layer 150 includes a first protective portion 151 and a second protective portion 152 connected to the first protective portion 151. The first protective portion 151 covers the outer surface of the bent portion 112, and the second protective portion 152 covers a portion of the display portion 111. The surface of the second protective portion 152 away from the binding portion 113 is not higher than the surface of the polarizer 120 away from the binding portion 113. By providing the protective layer 150 including a first protective part 151 and a second protective part 152 connected to the first protective part 151, the first protective part 151 covers the outer surface of the bent part 112, and the second protective part 152 covers a portion of the display part 111. The surface of the second protective part 152 away from the bonding part 113 is not higher than the surface of the polarizer 120 away from the bonding part 113. Compared with the conventional display device 10, this avoids the second protective part 152 from forming a protrusion beyond the top surface of the polarizer 120. On the other hand, it allows the adhesive layer 140 to form a preset distance with the edge of the second protective part 152. Thus, the situation where air bubbles are generated between the adhesive layer 140 and the polarizer 120 and the protective layer 150 in the conventional display device 10 is avoided, thereby improving the problem of poor appearance of the display device 10.

[0027] In this embodiment, reference Figure 2a , Figure 2b , Figure 4The adhesive layer 140 has a first gap between its edge near the bend 112 and the edge of the second protective portion 152, and the first gap is not less than 0.25 mm. By setting the first gap between the edge of the adhesive layer 140 near the bend 112 and the edge of the second protective portion 152, and the first gap is not less than 0.25 mm, the edge of the adhesive layer 140 and the edge of the polarizer 120 have sufficient distance. When manufacturing the protective layer 150, the UV adhesive used to manufacture the protective layer 150 is prevented from overflowing onto the protective film 101 of the adhesive layer 140. This prevents air bubbles from forming between the cover plate 130 and the protective layer 150 when the cover plate 130 is subsequently attached to the adhesive layer 140. Preferably, the first spacing is 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, 0.3mm, 0.31mm, 0.32mm, 0.33mm, 0.34mm, 0.35mm, 0.36mm, 0.37mm, 0.38mm, 0.39mm or 0.4mm.

[0028] In this embodiment, the thickness 'a' of the second protective portion 152 is greater than the thickness 'b' of the first protective portion 151, and the difference between the thickness 'a' of the second protective portion 152 and the thickness 'b' of the first protective portion 151 is 20µm to 70µm. By setting the thickness 'a' of the second protective portion 152 to be greater than the thickness 'b' of the first protective portion 151, and the difference between the thickness 'a' of the second protective portion 152 and the thickness 'b' of the first protective portion 151 to be 20µm to 70µm, the thickness of the protective layer 150 covering the display portion 111 is greater than the thickness of the protective layer 150 on the outer surface of the bent portion 112. On the one hand, this allows the protective layer 150 to provide stronger stress buffering capacity, reducing the risk of circuit breakage of the display panel 110 during bending. On the other hand, the thinner outer surface of the bent portion 112 facilitates a smaller bending radius, which in turn helps to reduce the width of the bezel of the display module 100. Preferably, the difference between the thickness a of the second protective part 152 and the thickness b of the first protective part 151 is 20um, 22um, 24um, 26um, 28um, 30um, 32um, 34um, 36um, 38um, 40um, 42um, 44um, 46um, 48um, 50um, 52um, 54um, 56um, 58um, 60um, 62um, 64um, 66um, 68um, or 70um.

[0029] In this embodiment, reference Figure 4The display device 10 further includes a middle frame 200 and a first filler 300. The display module 100 is disposed on the middle frame 200. A portion of the cover plate 130, the sidewall of the adhesive layer 140, a portion of the polarizer 120, the protective layer 150, and the middle frame 200 form a first filling cavity Q1. The first filler 300 fills the first filling cavity Q1 and covers a portion of the cover plate 130, the sidewall of the adhesive layer 140, a portion of the polarizer 120, and a portion of the protective layer 150. The elastic modulus of the first filler 300 is greater than the elastic modulus of the adhesive layer 140. By setting a portion of the polarizer 120, the protective layer 150, and the middle frame 200 to form a first filling cavity Q1, the first filler 300 fills the first filling cavity Q1 and covers a portion of the cover plate 130, the sidewall of the adhesive layer 140, a portion of the polarizer 120, and a portion of the protective layer 150. The elastic modulus of the first filler 300 is greater than that of the adhesive layer 140. That is, compared with the conventional display device 10, the film layer covering the connection between the polarizer 120 and the protective layer 150 is changed from the adhesive layer 140 to the first filler 300 with a larger elastic modulus. This can improve the strength of the area surrounded by a portion of the cover plate 130, the sidewall of the adhesive layer 140, a portion of the polarizer 120, and the second protective part 152, and reduce the risk of display failure caused by the circuit breakage of the display part 111 corresponding to the second filler 400 when the display device 10 is dropped.

[0030] In this embodiment, the adhesive layer 140 is made of optically transparent tape.

[0031] In this embodiment, the material of the protective layer 150 is UV adhesive.

[0032] In this embodiment, reference Figure 4The display module 100 further includes a first back plate 160, a second back plate 170, and a heat dissipation buffer layer 180; the first back plate 160 is disposed on a surface of the bonding portion 113 near the display portion 111; the second back plate 170 is disposed on a surface of the display portion 111 near the bonding portion 113; the heat dissipation buffer layer 180 is disposed between the first back plate 160 and the second back plate 170; wherein the adhesive layer 140 and the polarizer 120 do not extend beyond the edge of the heat dissipation buffer layer 180, and the distance from the edge of the adhesive layer 140 near the bending portion 112 to the bending portion 112 is greater than the distance from the edge of the heat dissipation buffer layer 180 near the bending portion 112 to the bending portion 112. The display module 100 further includes a first back plate 160, a second back plate 170, and a heat dissipation buffer layer 180. The first back plate 160 is disposed on the surface of the bonding portion 113 near the display portion 111. The second back plate 170 is disposed on the surface of the display portion 111 near the bonding portion 113. The heat dissipation buffer layer 180 is disposed between the first back plate 160 and the second back plate 170. The adhesive layer 140 and the polarizer 120 do not extend beyond the edge of the heat dissipation buffer layer 180, and the adhesive layer 140 is close to the bend. The distance from one edge of the fold 112 to the fold 112 is greater than the distance from the edge of the heat dissipation buffer layer 180 near the fold 112 to the fold 112. That is, compared with the conventional display device 10, the adhesive layer 140 is recessed, so that the adhesive layer 140 can form a preset distance with the edge of the protective layer 150. Therefore, the air bubbles that occur between the adhesive layer 140 and the polarizer 120 and the protective layer 150 in the conventional display device 10 will not occur, thereby improving the poor appearance of the display device 10.

[0033] In this embodiment, reference Figure 4The display module 100 further includes a first back plate 160, a second back plate 170, and a heat dissipation buffer layer 180. The first back plate 160 is disposed on a surface of the bonding portion 113 near the display portion 111. The second back plate 170 is disposed on a surface of the display portion 111 near the bonding portion 113. The heat dissipation buffer layer 180 is disposed between the first back plate 160 and the second back plate 170. The adhesive layer 140 does not extend beyond the edge of the heat dissipation buffer layer 180, and the polarizer 120 extends beyond the edge of the heat dissipation buffer layer 180. That is, compared to the conventional display device 10, the adhesive layer 140 is recessed, and the polarizer 120 is expanded, allowing the adhesive layer 140 to form a predetermined distance from the edge of the protective layer 150. This avoids the air bubbles that occur at the connection between the adhesive layer 140, the polarizer 120, and the protective layer 150 in the conventional display device 10, thereby improving the appearance of the display device 10.

[0034] In this embodiment, the heat dissipation buffer layer 180 includes a heat dissipation sublayer 181 and a buffer sublayer 182 stacked together.

[0035] In this embodiment, reference Figure 7 The bent portion 112, together with the first back plate 160, the second back plate 170, and the heat dissipation buffer layer 180, forms a second filling cavity Q2. The display device 10 also includes a second filler 400, which fills the second filling cavity Q2, and the elastic modulus of the second filler 400 is less than that of the first filler 300. By setting the bent portion 112, the first back plate 160, the second back plate 170, and the heat dissipation buffer layer 180 to form the second filling cavity Q2, and by including the second filler 400, which fills the second filling cavity Q2, and the elastic modulus of the second filler 400 is less than that of the first filler 300, the second filler with a large elastic modulus can enhance the deformation resistance of the bent portion and improve the structural strength of the display device.

[0036] In this embodiment, the material of the first filler 300 is optically transparent adhesive. By setting the material of the first filler 300 to optically transparent adhesive, the optically transparent adhesive can better fill the sidewall of the adhesive layer 140 of the cover plate 130, a portion of the polarizer, and the area enclosed by the second protective part 152, thereby reducing the risk of air bubbles forming in the area enclosed by the adhesive layer 140 of the cover plate 130, a portion of the polarizer, and the second protective part 152.

[0037] In this embodiment, the material of the second filler 400 is optically transparent adhesive.

[0038] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A display device, characterized in that, Includes a display module, the display module comprising: The display panel includes a display part, a bending part, and a binding part, wherein the bending part is connected to the display part and the binding part; A polarizer is disposed on the side of the display unit away from the bonding portion; A cover plate, wherein the cover plate is disposed on the side of the polarizer away from the binding portion; An adhesive layer is connected to the polarizer and the cover plate, and the distance from the adhesive layer to the bend is greater than the distance from the polarizer to the bend. A protective layer covers the outer surface of the bent portion, a portion of the protective layer covers the display portion, the protective layer is connected to the polarizer, and a portion of the protective layer covering the display portion away from the bonding portion is not higher than a portion of the polarizer away from the bonding portion.

2. The display device according to claim 1, characterized in that, The protective layer includes a first protective portion and a second protective portion connected to the first protective portion. The first protective portion covers the outer surface of the bent portion, and the second protective portion covers a portion of the display portion. The surface of the second protective portion away from the bonding portion is not higher than the surface of the polarizer away from the bonding portion.

3. The display device according to claim 2, characterized in that, The edge of the adhesive layer near the bend has a first gap with the edge of the second protective part, and the first gap is not less than 0.25 mm.

4. The display device according to claim 2, characterized in that, The thickness of the second protective part is greater than the thickness of the first protective part, and the difference between the thickness of the second protective part and the thickness of the first protective part is 20um~70um.

5. The display device according to claim 2, characterized in that, The surface of the second protective part away from the binding part is flush with the surface of the polarizer away from the binding part.

6. The display device according to claim 1, characterized in that, The display device further includes a middle frame and a first filler, wherein the display module is disposed on the middle frame, a portion of the cover plate, the sidewall of the adhesive layer, a portion of the polarizer, the protective layer and the middle frame form a first filling cavity, the first filler fills the first filling cavity, and the first filler covers a portion of the cover plate, the sidewall of the adhesive layer, a portion of the polarizer and a portion of the protective layer, and the elastic modulus of the first filler is greater than the elastic modulus of the adhesive layer.

7. The display device according to claim 6, characterized in that, The display module also includes: A first back plate is disposed on a surface of the bonding portion near the display portion; A second back plate is disposed on a surface of the display unit near the mounting portion; A heat dissipation buffer layer is disposed between the first back plate and the second back plate; Wherein, the adhesive layer and the polarizer do not extend beyond the edge of the heat dissipation buffer layer, and the distance from the edge of the adhesive layer near the bend to the bend is greater than the distance from the edge of the heat dissipation buffer layer near the bend to the bend.

8. The display device according to claim 6, characterized in that, The display module also includes: A first back plate is disposed on a surface of the bonding portion near the display portion; A second back plate is disposed on a surface of the display unit near the mounting portion; A heat dissipation buffer layer is disposed between the first back plate and the second back plate; The adhesive layer does not extend beyond the edge of the heat dissipation buffer layer, while the polarizer extends beyond the edge of the heat dissipation buffer layer.

9. The display device according to claim 7, characterized in that, The bent portion, together with the first back plate, the second back plate, and the heat dissipation buffer layer, forms a second filling cavity; The display device further includes a second filler, which fills the second filling cavity, and the elastic modulus of the second filler is less than that of the first filler.

10. The display device according to claim 6, characterized in that, The first filler is made of optically transparent adhesive, and the adhesive layer is made of optically transparent tape.

Images