TWM527549U - Display and the protrecting film - Google Patents

Description

Display device and protective sheet structure thereof

The present invention relates to a display device and a protective sheet structure thereof, and more particularly to a protective sheet structure for assisting positioning and assembly and a display device having the same.

In a general display device, an electronic component is provided as a signal transmission or command, so that the display device can smoothly operate and display a screen. However, electronic components are susceptible to external influences, such as signal interference and component dropout, which affect the operation and reliability of the display device.

In order to solve the above problems, a protective sheet is usually applied over the electronic component, and in addition to being fixed, the protection, isolation, or electrostatic protection can be achieved. Referring to FIG. 1(a) to FIG. 1(c), FIG. 1(a) to FIG. 1(c) are schematic diagrams showing the assembly of a protective sheet of a conventional display device. In the conventional display device 10, the display panel 11 is provided with an electronic component 13, and the protective sheet 15 has a protective adhesive layer 16 and a tear-off layer 17. After the protective sheet 15 is attached to the electronic component 13, the tear-off layer 17 of the protective sheet 15 is removed, as shown in Fig. 1(b). In the ideal assembly process, after the tear-off layer 17 is removed, the protective adhesive layer 16 is completely and tightly covered over the electronic component 13, thereby enhancing the effect of the fixing force and the protection.

However, in the actual assembly process, the step of removing the tear-off layer 17 is often performed while the protective adhesive layer 16 is peeled off from the surface of the electronic component 13, as shown in Fig. 1(c). As a result, the protective adhesive layer 16 cannot achieve the function of fixing and protecting, and the reliability of assembly is lowered.

The present invention provides a display device and a protective sheet structure. The protective sheet structure can facilitate the removal of the release layer and increase the adhesion force and assembly reliability of the protective sheet.

The protective sheet structure of one embodiment of the present invention comprises a protective adhesive layer and a tear-off layer. The protective adhesive layer has a first side edge, a first concave edge connected to the first flat edge, and the first concave edge and the first flat edge are located on the first side edge. The tearing layer has a first tearing portion, a first connecting neck portion and a bonding portion, and the bonding portion is in contact with the protective rubber layer, wherein the first concave and convex edge is adjacent to the first connecting neck portion, and A first gap may be formed between a connecting neck and the first flat edge.

The display device of one embodiment of the present invention comprises a display panel, a circuit board and a protective adhesive layer. The circuit board is electrically connected to the display panel, and the protective adhesive layer is disposed on the circuit board. The protective adhesive layer has a first side edge, a first concave edge connected to the first flat edge, and the first concave edge and the first flat edge are located on the first side edge.

The above description of the disclosure and the following description of the embodiments are intended to illustrate and explain the spirit and principles of the present invention, and to provide further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following detailed description of the embodiments of the present invention. Any related art and related art can easily understand the related purposes and advantages of the present invention. The following examples are intended to describe the present invention in further detail, but do not limit the scope of the present invention in any way.

Please refer to FIG. 2 , which is a schematic diagram of a structure of a protective sheet according to an embodiment of the present invention. The protective sheet 100 includes a protective layer 110 and a tear-off layer 130, and the protective layer 110 is disposed on the tear-off layer 130, and the surface area of the tear-off layer 130 is greater than the surface area of the protective layer 110, facilitating contact with the tear-off layer 130. The force is applied to separate the tear-off layer 130 from the protective layer 110. Specifically, the protective adhesive layer 110 has a first side 111, a first concave edge 120 and a first flat edge 122 connected thereto, and the first concave edge 120 and the first flat edge 122 are located at the first of the protective layer 110. Side 111. The tear-off layer 130 has a first hand portion 131, a first connecting neck portion 132 and a bonding portion 133 which are sequentially connected, and the bonding portion 133 is in contact with the protective layer 110. In other words, the bonding portion 133 of the tear-off layer 130 and the protective adhesive layer 110 are in overlapping contact with each other.

In the embodiment, the first concave and convex edge 120 is adjacent to the first connecting neck 132 , and a first notch 134 may be formed between the first connecting neck 132 and the first flat edge 122 . As seen from FIG. 2, the width of the first tearing portion 131, the first connecting neck portion 132 and the protective adhesive layer 110 are varied. In other words, the width b of the first connecting neck portion 132 is smaller than that of the protective adhesive layer 110. The width L is such that a first gap 134 can be formed between the first tearing portion, the first connecting neck 132 and the protective layer 110. When the user wants to remove the tear-off layer 130, the tear-off layer 130 can be torn away from the first hand-cut portion 131. During the tearing process, the separation interface of the tear-off layer 130 and the protective adhesive layer 110 may be located at the first concave-concave edge 120. Therefore, when the first concave-convex edge 120 is disposed, the adhesion area and adhesion of the separation interface can be reduced, and the separation of the tear-off layer 130 and the protective layer 110 can be assisted. In addition, the first notch 134 is formed due to the reduction of the width of the first connecting neck 132, except that the contact area of the separation interface between the tear-off layer 130 and the protective layer 110 is reduced. In addition, it is also convenient for the user to operate smoothly to improve assembly efficiency.

In the present embodiment, the first concave-concave edge 120 is a non-flat edge, and is provided with an edge of a microstructure or an undulating structure. Relative to the first flat edge 122, the first flat edge 122 is a flat or linear edge. In other words, adjacent two points on the first relief edge 120 have different slopes or curvatures, while adjacent two points on the first flat edge 122 have the same slope or curvature. In the embodiment of FIG. 2, the first concave and convex edge 120 is a sawtooth structure, but the present invention is not limited thereto. Referring to FIG. 3( a ), FIG. 3( a ) is a schematic diagram of a concave and convex edge of a protective sheet structure according to another embodiment of the present invention. In this embodiment, the first concave-convex edge 220 is semi-circular or wavy (not shown), which can reduce the adhesion area and adhesion of the separation interface. Please refer to FIG. 3(b). FIG. 3(b) is a schematic diagram showing the concave and convex edges of the protective sheet structure according to another embodiment of the present invention. In this embodiment, the first concave and convex edge 320 is a sawtooth structure of a dome angle, which may also help separate the tearing layer 330 from the protective adhesive layer 310.

4(a) is a perspective view showing the concave and convex edges of the protective sheet structure according to another embodiment of the present invention. In the embodiment of FIG. 4(a), the first concave and convex edge 420 of the protective sheet 400 is sawtoothed. Structure, and its sawtooth structure has an apex angle β. At the same time, the first concave-concave edge 420 forms an angle a with one of the edges of the first connecting neck 432. In detail, the protective layer 410 has a first side 411 and a second side 413 and a third side 415 opposite to each other, and the third side 415 is located between the first side 411 and the second side 413. And the third side 415 is adjacent to the first side 411. In this embodiment, the first connecting neck 432 has an edge, and the edge is an extended edge of the third side 415 of the protective adhesive layer 410. In other words, the edge is connected to the first side 411 and the third side, respectively. Side 415. As shown in FIG. 4( a ), the edges of the first connecting neck 432 are connected and parallel to the third side 415 , and are also connected and perpendicular to the first side 411 . However, the present invention is not limited thereto, for example. The edges of the first connecting neck 432 are respectively connected to the first side 411 and the third side 415, and the edges thereof may also form an angle (not 180 degrees) between the third sides. The first concave and convex edge 420 is composed of a sawtooth structure. Specifically, the first concave and convex edge 420 is arranged in a plurality of apex angle structures to form a sawtooth structure. Therefore, the first concave and convex edge 420 is provided with a most adjacent third side edge 415. Sawtooth structure. The angle α is the sawtooth structure closest to the third side 415 and the first connecting neck 432 The angle formed between the edges, and in the present embodiment, the angle α of the angle α is greater than 0° and less than 45°, and the apex angle β is 2 α. In the angular range of the angle α and the apex angle β, when the tear-off layer 430 is easily removed, the tear-off layer 430 can be easily separated from the protective layer 410, which contributes to assembly reliability.

Referring to FIG. 4(b), FIG. 4(b) is a perspective view showing the concave and convex edges of the protective sheet structure according to another embodiment of the present invention. The main difference between the embodiment of FIG. 4(b) and the embodiment of FIG. 4(a) is that the apex angle of the sawtooth structure of the first concave-convex edge 520 is in contact with the edge of the first connecting neck 532, and FIG. 4(a) The embodiment is such that the bottom corner of the sawtooth structure of the first beveled edge 420 is in contact with the edge of the first connecting neck 432. In the embodiment of FIG. 4(b), the adjacent two sawtooth structures have an angle φ therebetween, and the sawtooth structure closest to the third side 515 has an angle γ with the third side 515, and the angle γ is 0° to 45°, and the angle φ is 2 γ. As a result, the tear-off layer 530 is separated from the protective layer 510, so that when the tear-off layer 530 is removed, the adhesion between the protective layer 510 and other objects is not easily affected, and the assembly reliability and yield are improved. In the embodiment of FIG. 4(b), the relationship between the first concave-convex edge and the edge or the third side of the first connecting neck, the relationship between the angle γ and the angle φ can also be applied to FIG. 3(a). In the modification of Fig. 3(b); and in the embodiment of Fig. 4(a), the relationship between the angle α and the apex angle β can also be applied to the embodiment of Fig. 3(b).

Referring to the embodiment shown in FIG. 2 , the protective layer 110 further includes a second side 113 , a second second flat edge 124 and a second concave edge 126 , and the second side 113 is located opposite the first side 111 . The opposite sides of the protective layer 110 are formed, and the second uneven edge 126 and the second flat edge 124 are formed on the second side 113. The tear-off layer 130 also includes an adjacent second connecting neck 135 and a second tearing portion 136, and the second connecting neck 135 is adjacent to the second concave-concave edge 126, and the second connecting neck 135 and the second flat edge A second gap 137 can be formed between 124. In other words, the tear-off layer 130 has a first tearing portion 131, a first connecting neck portion 132, a fitting portion 133, a second connecting neck portion 135 and a second tearing portion 136 that are sequentially connected, that is, a tear-off layer The 130 has a structure in which the shape is symmetrical with the bonding portion 133 as a reference axis. The second flat edge 124, the second concave edge 126, the second connecting neck 135 and the second tearing portion 136 are opposite to the first flat edge 122, the first concave edge 120, the first connecting neck 132 and the first tearing The hand 131 is similar, so it will not be described.

In the embodiment, the first hand portion 131, the first connecting neck portion 132, the bonding portion 133, The sequentially arranged direction of the second connecting neck portion 135 and the second tearing portion 136 is a first extending direction, and the first concave and convex edge 120 corresponds to the second flat edge 124 in the first extending direction, the first flat edge 122 corresponds to the second concave and convex edge 126 in the first extending direction. Specifically, the first flat edge 122 and the first concave edge 120 are located on the first side 111 of the protective layer 110, and the second flat edge 124 and the second concave edge 126 are located on the second side 113 of the protective layer 110. . The first concave and convex edge 120 is closer to the third side edge 115 than the first flat edge 122 such that the first concave and convex edge 120 is located at the third side edge 115 and the first flat edge 122. The second relief edge 126 is further from the third side edge 115 relative to the second flat edge 124 such that the second flat edge 124 is located at the third side edge 115 and the second relief edge 126. It can be seen from the embodiment of FIG. 2 that the first connecting neck 132 abuts the first concave edge 120 and the first notch 134 is adjacent to the first flat edge 122. Likewise, the second attachment neck 135 abuts the second relief edge 126 and the second gap 137 is adjacent to the second flat edge 124. So designed, when the tearing layer 130 is applied, the separation interface between the tearing layer 130 and the protective layer 110 (ie, the first concave edge 120 or the second concave edge 126) becomes smaller, and the contact area becomes smaller. Helps separate the two-layer structure. It is worth mentioning that the first concave and convex edge 120 is closer to the third side edge 115 than the second concave and convex edge 126, that is, the positional relationship between the first concave and convex edge 120 and the second concave and convex edge 126 is similar or identical to Diagonal relationship. In other words, the first concave-concave edge 120 and the second concave-concave edge 126 are misaligned such that the position of the first concave-concave edge 120 corresponds to the second flattened edge 124 and the position of the second concave-concave edge 126 is viewed in the first extending direction. Corresponding to the first flat edge 122. In addition to helping to separate the tear-off layer 130 and the protective adhesive layer 110, the assembly reliability is improved, and the user's tearing feel and efficiency can be increased.

In the embodiment of FIG. 2, the width L of the protective layer is greater than the length a of the first uneven edge, and the ratio of the length a to the width L needs to be less than or equal to 1/2. It has been found through experiments that when the length of the first concave-convex edge is gradually increased to a ratio greater than 1/2, the benefit of assisting the two-layer separation is not as significantly improved as expected. Therefore, when the ratio of the length a to the width L is less than or equal to 1/2, the first connecting neck 132 or the second connecting neck 135 does not break when the force is applied to the tearing layer, and the tearing is affected. The separation effect of the bonding portion 133 of the layer 130 and the protective adhesive layer 110 can also achieve the effect of improving the separation efficiency by the uneven edges. In the embodiment, the length a of the first concave and convex edge 120 is wider than the width of the first connecting neck 132. Degree b is the same, but the present invention is not limited thereto. Referring to FIG. 5( a ) and FIG. 5( b ), FIG. 5( a ) and FIG. 5( b ) are schematic diagrams respectively showing a structure of a protective sheet according to another embodiment of the present invention. In the embodiment of FIG. 5(a), the length a of the first concave-concave edge 620 is greater than the width b of the first connecting neck; and in the embodiment of FIG. 5(b), the length a of the first concave-concave edge 720 is smaller than The width of the first connecting neck is b. In the two modified examples, an appropriate length to width relationship can be selected in consideration of mass production convenience and the like.

For convenience of description, the first torn hand portion, the first connecting neck portion, the second torn hand portion, and the second connecting neck portion are all the same in shape, width or area, but the present invention does not For example, the widths of the first connecting neck portion and the second connecting neck portion may be different, or the areas of the first tearing portion and the second tearing portion are different, so that the design can be matched according to different needs. Different sizes and shapes. In addition, in the foregoing embodiments, the lengths of the first concave and convex edges and the second concave and convex edges are also the same, but the present invention is not limited thereto. In the modified example, the lengths of the first concave and convex edges and the second concave and convex edges may be different. .

Please refer to FIG. 6. FIG. 6 is a schematic diagram of a structure of a protection sheet according to another embodiment of the present invention. The protective sheet 800 of the present embodiment differs from the foregoing embodiments in that the first notch 834 has a triangular shape and the second notch 837 has a triangular shape. However, the first notch 834 and the second notch 837 may be rectangular (as drawn in the foregoing embodiment) or polygonal, and the first notch 834 and the second notch 837 may have the same shape. Or it can be different. In the embodiment of the present invention, the first notch 834 needs to be adjacent to the first flat edge 822, and the second notch 837 is adjacent to the second flat edge 824, so that the partial width of the first connecting neck 832 is smaller than the protective adhesive layer 810. With the first tearing portion 831. In addition, the direction in which the notches of the first notch 834 and the second notch 837 are directed is anisotropic and non-codirectional. In particular, the separation interface between the protective adhesive layer 810 and the tear-off layer 830 is the first concave-concave edge. 820, to help the two layers of separation, can also enhance the user's tear away from the hand.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of a display device according to an embodiment of the present invention. In the embodiment, the display device 20 includes a display panel 21 , a circuit board 22 , and a protective adhesive layer 24 . The circuit board 22 is electrically connected to the display panel 21 , and the protective adhesive layer 24 is disposed on the circuit board 22 . Specifically, the circuit board 22 has an electronic component 23, and the protective adhesive layer 24 can cover the electronic component 23 and the electrical The circuit board 22 allows the electronic component 23 to be protected to reduce interference, and can increase the fixing force, thereby improving the display quality of the explicit device. In this embodiment, the electronic component 23 can be a wafer, but the present invention is not limited thereto. The electronic component 23 can also be a metal pad, a grounding component or a sensing component on the circuit board.

Applying the protective adhesive layer 24 to the assembly process of the circuit board 22, the protective sheet having the tear-off layer and the protective adhesive layer 24 is first attached to the circuit board 22, and then the tear-off layer of the protective sheet is peeled off. The protective adhesive layer 24 is left on the surface of the circuit board 22 or the electronic component 23 as shown in FIG. In the embodiment of FIG. 7, the protective adhesive layer 24 has a first side 911, a first concave edge 920 and a first flat edge 922, and the first concave edge 920 and the first flat edge 922 are on the first side. Side 911. The first concave and convex edge 920 may be a sawtooth structure, a wave structure, a semicircular structure or a domed structure of a dome angle, but the present invention is not limited thereto. In particular, the first relief edge 920 is a non-flat edge and is provided with an edge of a microstructure or relief structure. Relative to the first flattened edge 922, the first flattened edge 922 is a flat or linear edge. In other words, two adjacent points on the first relief edge 920 have different slopes or curvatures, while adjacent two points on the first flat edge 922 have the same slope or curvature.

In this embodiment, the protective layer 24 of the display device 20 also has a second side 913, a third side 915, a second uneven edge 926 and a second flat edge 924 connected to the first side 911. And the second concave edge 926 and the second flat edge 924 are located at the second side edge 913, and the third side edge 915 is adjacent to the first side edge 911. The description of the second uneven edge 926 is the same as that of the first uneven edge 920 described above, and thus no further description is given. As shown in FIG. 7 , the first concave and convex edge 920 is closer to the third side edge 915 than the second concave and convex edge 926 , that is, the positional relationship between the first concave and convex edge 120 and the second concave and convex edge 126 is similar or identical to the diagonal. Line relationship. In other words, the first concave-concave edge 120 and the second concave-concave edge 126 are offset.

In the embodiment of FIG. 7, the ratio of the length a of the first concave-convex edge 920 to the width L of the protective adhesive layer 24 needs to be less than or equal to 1/2. It has been found through experiments that when the length of the first concave-convex edge is gradually increased to a ratio greater than 1/2, the benefit of assisting the two-layer separation is not as significantly improved as expected. Therefore, when the ratio of the length a to the width L is less than or equal to 1/2, the first connecting neck 132 or the second connecting neck 135 When the force is applied to the tear-off layer, the breakage does not occur, and the separation effect of the bonding portion 133 of the tear-off layer 130 and the protective rubber layer 110 is affected, and at the same time, the effect of improving the separation efficiency by the uneven edges can be achieved.

In the embodiment of FIG. 7 , the first concave and convex edge 920 is a sawtooth structure, and the apex angle of the sawtooth structure is greater than 0° and less than 90°, that is, the first concave and convex edge 920 is a sawtooth structure with a sharp top angle. In another modification, when the first concave and convex edge 920 is a sawtooth structure of a dome angle, the angle of the dome angle is also greater than 0° and is smaller than 90°. In the embodiment, the first concave and convex edges 920 are arranged in the same size and shape, and the shape and size of the first concave and convex edges 920 and the second concave and convex edges 926 are the same. However, the present invention is not limited thereto, and the first concave and convex edges 920 may be arranged in different sizes and shapes, or the first concave and convex edges 920 and the second concave and convex edges 926 may have different shapes or sizes.

In the embodiment of FIG. 7, the protective adhesive layer 24 is applied to the circuit board of the display device, but the present invention is not limited thereto, and the protective adhesive layer 24 can also be applied to other objects to achieve the protection of the object. Efficacy and can. For example, the protective adhesive layer can be disposed in the peripheral area of the display panel for use as electrostatic protection or line protection.

In summary, the present invention provides a protective sheet structure and a display device. The protective adhesive layer of the protective sheet is provided with a concave and convex edge to help protect the separation effect between the adhesive layer and the tear-off layer. In addition to facilitating separation, it does not affect the adhesion of the protective adhesive layer to the component, thereby enhancing the reliability and efficiency of assembly.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the present invention. The changes and refinements of the present invention are within the scope of the patent protection of the present invention without departing from the spirit and scope of the present invention. Please refer to the attached patent application for the scope of protection defined by this new model.

10, 20‧‧‧ display device

11, 21‧‧‧ display panel

13, 23‧‧‧ Electronic components

15‧‧‧protection film

16, 24‧‧ ‧ protective layer

17‧‧‧ tearing layer

100, 400, 500, 800‧‧‧protective films

110, 310, 410, 510, 810 ‧ ‧ protective layer

111, 411, 511, 911‧‧‧ first side

113, 413, 513, 913‧‧‧ second side

114, 415, 515, 915‧‧‧ third side

120, 220, 320, 420, 520, 620, 720, 820, 920‧‧‧ first concave edge

122, 822, 922‧‧‧ first flat edge

124, 824, 924‧‧‧ second flat edge

126, 926‧‧‧ second bump edge

130, 330, 430, 530, 830‧‧‧ tearing layer

131, 831‧‧‧ first hand

132, 832‧‧‧ first connection to the neck

133‧‧‧Fitting Department

134, 834‧‧‧ first gap

135‧‧‧Second connection neck

136‧‧‧second tearing hand

137, 837‧‧‧ second gap

22‧‧‧ Circuit board

a‧‧‧The length of the first concave edge

b‧‧‧The width of the first connecting neck

L‧‧‧Width of protective layer

α, γ‧‧‧ angle

‧‧‧‧After angle

Φ‧‧‧ angle

Fig. 1(a) is a schematic view showing the assembly of a protective sheet of a conventional display device. Fig. 1(b) is a schematic view showing the assembly of a protective sheet of a conventional display device. Fig. 1(c) is a schematic view showing the assembly of a protective sheet of a conventional display device. FIG. 2 is a schematic diagram of a structure of a protective sheet according to an embodiment of the present invention. FIG. 3( a ) is a schematic view showing a concave and convex edge of a protective sheet structure according to another embodiment of the present invention. FIG. 3(b) is a schematic view showing a concave and convex edge of a protective sheet structure according to another embodiment of the present invention. 4(a) is a schematic view showing the angle of the concave and convex edges of the protective film structure according to an embodiment of the present invention. FIG. 4(b) is a schematic view showing the angle of the concave and convex edges of the protective sheet structure according to another embodiment of the present invention. FIG. 5(a) is a schematic view showing the structure of a protective sheet according to another embodiment of the present invention. FIG. 5(b) is a schematic view showing the structure of a protective sheet according to another embodiment of the present invention. FIG. 6 is a schematic view showing a structure of a protective sheet according to another embodiment of the present invention.

FIG. 7 is a schematic diagram of a display device according to an embodiment of the present invention.

100‧‧‧protection film

110‧‧‧Protective layer

111‧‧‧First side

113‧‧‧Second side

115‧‧‧ third side

120‧‧‧First bump edge

122‧‧‧First flat edge

124‧‧‧ second flat edge

126‧‧‧second bump edge

130‧‧‧ tearing layer

131‧‧‧The first torn hand

132‧‧‧ first connection to the neck

133‧‧‧Fitting Department

134‧‧‧ first gap

135‧‧‧Second connection neck

136‧‧‧second tearing hand

137‧‧‧ second gap

a‧‧‧The length of the first concave edge

b‧‧‧The width of the first connecting neck

L‧‧‧Width of protective layer

Claims (10)

A protective sheet structure comprising: a protective adhesive layer having a first side edge, a first concave edge and a first flat edge joined together, and the first concave edge and the first flat edge are located at the first a first peeling portion, a first connecting neck portion and a bonding portion, and the bonding portion is in contact with the protective adhesive layer, wherein the first portion The concave and convex edge is adjacent to the first connecting neck, and a first gap is formed between the first connecting neck and the first flat edge. The protective sheet structure of claim 1, wherein the protective layer further comprises a second side, a second concave edge and a second flat edge, and the second side is located at the first side The opposite side edges of the protective rubber layer, and the second concave edge and the second flat edge are located on the second side. The protective sheet structure of claim 2, the tearing layer further comprises an adjacent one of the second tearing portion and a second connecting neck, and the second connecting neck is adjacent to the second concave and convex edge, and A second gap may be formed between the second connecting neck and the second flat edge. The protective sheet structure according to claim 3, wherein the first tearing portion, the first connecting neck portion, the fitting portion, the second connecting neck portion and the second tearing portion are sequentially arranged. a first extending direction corresponding to the second flat edge in the first extending direction, the first flat edge corresponding to the second concave edge in the first extending direction . A display device comprising: a display panel; a circuit board electrically connected to the display panel; and a protective adhesive layer disposed on the circuit board, the protective adhesive layer having a first side and one of the connected The first concave and convex edge and a first flat edge, and the first concave edge and the first flat edge are located on the first side. The display device of claim 5, wherein the protective adhesive layer further has a second side edge and a second flat edge connected to the second side of the first side, and the first Two concave and convex edges and the second flat edge are located on the second side. The display device of claim 6, wherein the protective layer further has a third side, and the third side is adjacent to the first side, wherein the first concave edge is larger than the second concave edge thereof Closer to the third side. The display device of claim 5, wherein the first concave and convex edge may be a sawtooth structure, a wave structure, a semicircular structure or a domed structure of a dome angle. The display device of claim 5, wherein a width ratio of the first concave-convex edge to the protective layer is less than or equal to 1/2. The display device of claim 5, wherein the first concave and convex edge has an acute angle structure.