Display device and flexible circuit board

Abstract

The embodiment of the invention provides a display device and a flexible circuit board, and the display device comprises a display panel which comprises a display area and a first binding part located on at least one side of the display area; the flexible circuit board is bound and connected to the first binding part and is bent to the non-display side of the display panel, the display device further comprises a constant signal end, the flexible circuit board comprises a first conducting layer and a first covering layer covering the first conducting layer, the first covering layer is provided with a first opening, at least part of the first conducting layer is exposed out of the first opening, and the constant signal end is connected to the flexible circuit board. And the first conductive layer is electrically connected with the constant signal end. Static electricity generated in the use and preparation process of the display device can be released through the first conductive layer, and the processing performance and the use performance of the display device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display device and a flexible circuit board. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, power saving, thin body, and wide range of applications, becoming the mainstream display device.

[0003] However, the process performance of current OLED display products needs to be improved. Summary of the Invention

[0004] Embodiments of the present application provide a display device and a flexible circuit board, aiming to improve the process performance of the display device.

[0005] A first aspect of an embodiment of the present application provides a display device, which includes: a display panel, including a display area and a first binding portion located on at least one side of the display area; a flexible circuit board, bound and connected to the first binding portion and bent to the non-display side of the display panel, wherein the display device also includes a constant signal terminal, the flexible circuit board includes a first conductive layer and a first covering layer covering the first conductive layer, the first covering layer has a first opening, at least a portion of the first conductive layer is exposed by the first opening, and the first conductive layer and the constant signal terminal are electrically connected.

[0006] An embodiment of the second aspect of the present application also provides a flexible circuit board, which is used for a display device, the display device including a display panel, the display panel including a first binding portion, the flexible circuit board including: an insulating substrate layer; a first conductive layer, arranged on one side of the insulating substrate layer, the first conductive layer being used to be electrically connected to a constant signal end of the display device; a first covering layer, covering a side of the first conductive layer facing away from the insulating substrate layer, the first covering layer having a first opening, and at least a portion of the first conductive layer being exposed from the first opening.

[0007] In the display device provided in the embodiment of the present application, the display device includes a display panel and a flexible circuit board. The display panel includes a display area and a first binding portion. The display area can be used to set a light-emitting unit to realize the display function of the display device. The first binding portion is used to bind the flexible circuit board to realize the transmission of control signals. The flexible circuit board is connected to the first binding portion and bent to the non-display side, which can reduce the area of ​​the non-display area of ​​the display device frame. In addition, the flexible circuit board includes a first conductive layer and a first covering layer covering the first conductive layer. The first covering layer can provide protection to the first conductive layer. In addition, the first covering layer is provided with a first opening, and at least a portion of the first conductive layer is exposed from the first opening, so that static electricity can be released from the first opening to the first conductive layer. The display device includes a constant signal terminal, and the first conductive layer and the constant signal terminal are electrically connected, so that static electricity can be released from the first conductive layer to the constant signal terminal. The static electricity generated during the use and preparation of the display device can be released through the first conductive layer, which can improve the process performance and use performance of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0009] Figure 1 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0010] Figure 2 is a schematic structural diagram of a display device provided by an embodiment of the present application in another state;

[0011] Figure 3 This is a schematic structural diagram of one side of a flexible circuit board of a display device provided in an embodiment of the present application;

[0012] Figure 4 This is a schematic structural diagram of the other side of a flexible circuit board of a display device provided in an embodiment of the present application;

[0013] Figure 5 This is a schematic structural diagram of the other side of a flexible circuit board of a display device provided by another embodiment of the present application;

[0014] Figure 6 This is a schematic structural diagram of the other side of a flexible circuit board of a display device provided in another embodiment of the present application;

[0015] Figure 7 This is a schematic structural diagram of the other side of a flexible circuit board of a display device provided in yet another embodiment of the present application;

[0016] Figure 8This is a partial cross-sectional view of a flexible circuit board of a display device provided in an embodiment of the present application.

[0017] Description of reference numerals:

[0018] 100, display panel; 110, first binding portion; 120, first edge; 130, functional layer;

[0019] 200, flexible printed circuit board; 210, first conductive layer; 211, first conductive portion; 212, second conductive portion; 213, third conductive portion; 220, first covering layer; 221, first opening; 230, insulating base material layer; 240, fourth conductive portion; 250, second binding portion; 251, second binding pin; 260, connecting portion; 261, connecting pin; 270, second conductive layer; 280, second covering layer; 290, component region;

[0020] 300, cover plate;

[0021] WA, bending area; L, bending axis; NW, non-bending area; SA, preset plane; H1, first distance; X, first direction; Y, second direction; Z, thickness direction. DETAILED DESCRIPTION

[0022] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present application; and, for clarity, the sizes of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0023] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0024] In order to better understand this application, Figures 1 to 8 The display device and the flexible circuit board according to the embodiments of the present application are described in detail.

[0025] like Figures 1 to 4 As shown, a first aspect of an embodiment of the present application provides a display device, comprising: a display panel 100, comprising a display area and a first binding portion 110 located on at least one side of the display area; a flexible circuit board 200, bound and connected to the first binding portion 110 and bent to the non-display side of the display panel 100, wherein the display device also includes a constant signal terminal, the flexible circuit board 200 includes a first conductive layer 210 and a first covering layer 220 covering the first conductive layer 210, the first covering layer 220 is provided with a first opening 221, at least a portion of the first conductive layer 210 is exposed by the first opening 221, and the first conductive layer 210 is electrically connected to the constant signal terminal.

[0026] Optionally, the flexible circuit board 200 includes an unfolded state and a bent state. Figure 1 is a structural diagram of the flexible circuit board 200 in an unfolded state. Figure 2 FIG2 is a schematic diagram of the structure of the flexible circuit board 200 in a bent state. During the manufacturing process of the display device, the flexible circuit board 200 is bent from the unfolded state to the bent state. Figure 3 and Figure 4 FIG. 2 is a top view of the flexible circuit board 200 in the unfolded state.

[0027] Figure 3 The figure shows a side surface of the flexible circuit board 200 and the display panel 100. Figure 4 The surface of the flexible circuit board 200 is shown facing away from the binding side. Figure 4 The first covering layer 220 covers the first conductive layer 210 , and a first opening 221 defined in the first covering layer 220 exposes at least a portion of the first conductive layer 210 .

[0028] In the display device provided in the embodiment of the present application, the display device includes a display panel 100 and a flexible circuit board 200. The display panel 100 includes a display area and a first binding portion 110. The display area can be used to set a light-emitting unit to realize the display function of the display device. The first binding portion 110 is used to bind the flexible circuit board 200 to realize the transmission of control signals. The flexible circuit board 200 is connected to the first binding portion 110 and bent to the non-display side, which can reduce the area of ​​the non-display area of ​​the display device frame. In addition, the flexible circuit board 200 includes a first conductive layer 210 and a first covering layer 220 covering the first conductive layer 210. The first covering layer 220 can provide protection for the first conductive layer 210. In addition, the first covering layer 220 is provided with a first opening 221. At least a portion of the first conductive layer 210 is exposed through the first opening 221, so that static electricity can be discharged from the first opening 221 to the first conductive layer 210. The display device includes a constant signal terminal. The first conductive layer 210 and the constant signal terminal are electrically connected, so that static electricity can be discharged from the first conductive layer 210 to the constant signal terminal. Static electricity generated during the use and preparation of the display device can be released through the first conductive layer 210 , thereby improving the process performance and use performance of the display device.

[0029] Optionally, the display panel 100 includes a substrate, a driver device layer, and a light-emitting device layer. The driver device layer includes a pixel driving circuit and signal lines, and the light-emitting device layer includes a first electrode layer, a pixel definition layer, a light-emitting unit, a second electrode layer, and an encapsulation layer. The light-emitting unit is located in the display area.

[0030] Optionally, the flexible circuit board 200 includes a bending area WA. One end of the flexible circuit board 200 is connected to the first binding portion 110, and the other end of the flexible circuit board 200 is bent toward the non-display side through the bending area WA. Optionally, the flexible circuit board 200 also includes a non-bending area NW. When the flexible circuit board 200 is in a flattened state, two non-bending areas NW are disposed on opposite sides of the bending area WA. When the flexible circuit board 200 is in a folded state, the two non-bending areas NW are located on the same side of the bending area WA facing the display panel 100 and are stacked one on top of the other.

[0031] Optionally, the display device further includes a cover plate 300, which is disposed on the display side of the display panel 100. The first opening 221 may be positioned in various ways. Optionally, the first opening 221 is at least located in the bending area WA.

[0032] In these optional embodiments, after the display device is assembled and formed, the flexible circuit board 200 is often in a bent state. In the bent state, the bending area WA is close to the outside of the display device, and the generated static electricity is easily transferred from the edge of the cover plate 300 to the bending area WA. The first opening 221 is at least located in the bending area WA, so that at least part of the first conductive layer 210 in the bending area WA is exposed to release static electricity, which can better improve the performance of the display device.

[0033] Optionally, the flexible circuit board 200 further includes an insulating substrate layer 230, which is located on the side of the first conductive layer 210 facing away from the first cover layer 220. The first cover layer 220 is located on the side of the insulating substrate layer 230 facing away from the display panel 100. The insulating substrate layer 230 can be a supporting material and a basic film layer structure for the flexible circuit board 200. The flexible circuit board 200 is formed by providing a conductive layer and a cover layer on the insulating substrate layer 230.

[0034] Optionally, the display panel 100 includes a first edge 120, the flexible circuit board 200 and the first edge 120 are located on the same side of the display panel 100, and the cover plate 300 extends from the first edge 120. When the flexible circuit board 200 is in a flattened state, the cover plate 300 extends from the first edge 120 to cover the first opening 221.

[0035] In these optional embodiments, the flexible circuit board 200 is disposed on the side where the first edge 120 is located, and the cover plate 300 extends beyond the first edge 120, so that the cover plate 300 can provide protection for the flexible circuit board 200 and improve the service life of the flexible circuit board 200. Furthermore, when the flexible circuit board 200 is in a flattened state, the portion of the cover plate 300 extending beyond the first edge 120 can cover the first opening 221, making it easier for static electricity on the side of the cover plate 300 to be transferred to the first opening 221.

[0036] Optionally, the bending area WA has a bending axis L. When the flexible circuit board 200 is in a bent state, the bending axis L is located at the maximum distance between the flexible circuit board 200 and the display panel 100, the first opening 221 is located on the side of the bending axis L facing the display panel 100, and the first opening 221 is located on the side of the bending area WA facing the cover plate 300.

[0037] In these optional embodiments, when the flexible circuit board 200 is in a bent state, the bending area WA is divided into two parts by the bending axis L, one part facing the cover plate 300, and the other part facing away from the cover plate 300. The first opening 221 is located in the portion of the bending area WA facing the cover plate 300, which can reduce the distance between the first opening 221 and the cover plate 300, thereby facilitating the rapid transfer of static electricity to the first conductive layer 210 exposed by the first opening 221. The first opening 221 is located on the side of the bending apex facing the display panel 100, that is, the first opening 221 is not located on the bending axis L. This also reduces the distance between the first opening 221 and the cover plate 300, and the cover plate 300 can cover and protect the first opening 221.

[0038] Optional, such as Figures 2 to 4 As shown, when the flexible circuit board 200 is in a bent state, the first opening 221 is located on the side of the preset plane SA close to the cover plate 300, the bending axis L of the bending area WA is located in the preset plane SA, and the preset plane SA is perpendicular to the thickness direction of the display panel 100.

[0039] In these optional embodiments, the bending axis L of the bending area WA is located on a preset plane, and the preset plane SA is perpendicular to the thickness direction. The preset plane SA can divide the bending area WA into a part close to the cover plate 300 and a part away from the cover plate 300. The first opening 221 is located on the side of the preset plane SA close to the cover plate 300, that is, the first opening 221 is located in a part of the bending area WA close to the cover plate 300, rather than on the bending axis L, which can reduce the distance between the first opening 221 and the cover plate 300, and the cover plate 300 can cover the first opening 221 and provide protection to the first opening 221.

[0040] In some optional embodiments, the first conductive layer 210 includes a first conductive portion 211 and a second conductive portion 212 electrically connected to each other, an angle is formed between the first conductive portion 211 and the second conductive portion 212 , and at least a portion of the second conductive portion 212 is exposed by the first opening 221 .

[0041] In these optional embodiments, the first conductive layer 210 includes a first conductive portion 211 and a second conductive portion 212 extending in different directions, which can improve the bending performance of the first conductive layer 210. The first conductive portion 211 and the second conductive portion 212 are connected to each other, and at least a portion of the second conductive portion 212 is exposed by the first opening 221, so that static electricity can be transmitted from the first opening 221 to the second conductive portion 212 and then to the first conductive portion 211.

[0042] As mentioned above, the display panel 100 further includes a first edge 120, and the flexible circuit board 200 and the first edge 120 are disposed on the same side of the display panel 100. The portion of the second conductive portion 212 exposed by the first opening 221 is strip-shaped, and the portion of the second conductive portion 212 exposed by the first opening 221 extends parallel to the first edge 120. In these optional embodiments, the second conductive portion 212 exposed by the first opening 221 is strip-shaped and extends parallel to the first edge 120, so that static electricity generated at different locations on the first edge 120 can be discharged by the second conductive portion 212.

[0043] The second conductive portion 212 exposed by the first opening 221 is in a strip shape and its extension direction is parallel to the first edge 120 , which means that the extension path of the second conductive portion 212 exposed by the first opening 221 is parallel to the first edge 120 .

[0044] Optionally, the first opening 221 is strip-shaped, and the extension direction of the first opening 221 is parallel to the first edge 120. That is, the extension path of the first opening 221 is parallel to the first edge 120, so that static electricity generated at different positions of the first edge 120 can enter the first opening 221 and be released by the second conductive portion 212.

[0045] Optionally, the width of the portion of the second conductive portion 212 exposed by the first opening 221 is smaller than the width of the first opening 221 in a strip shape. For example, the second conductive portion 212 is formed by extending along the first direction X, the length direction of the second conductive portion 212 is the first direction X, and the width direction of the second conductive portion 212 is the second direction Y. Similarly, the length direction of the first opening 221 is the first direction X, and the width direction of the first opening 221 is the second direction Y. The width of the portion of the second conductive portion 212 exposed by the first opening 221 is smaller than the width of the first opening 221 in a strip shape: that is, the width of the second conductive portion 212 in the second direction Y is smaller than the width of the first opening 221, and the width of the portion of the second conductive portion 212 exposed by the first opening 221 is also smaller than the width of the first opening 221. The larger width of the first opening 221 allows more of the second conductive portion 212 to be exposed, thereby improving the electrostatic discharge effect.

[0046] Optionally, at least a portion of the first conductive portion 211 is strip-shaped, and the first conductive portion 211 bends around the bending axis L of the bending area WA. For example, when the flexible circuit board 200 is in a flattened state, the flexible circuit board 200 is connected to one side of the display panel 100 in the first direction X and extends along the first direction X, and the first conductive portion 211 extends along the first direction X. When the flexible circuit board 200 is in a folded state, the first conductive portion 211 extends from the non-bending area NW to the bending area WA, and the first conductive portion 211 extends along the bending path of the bending area WA.

[0047] Optionally, the second conductive portion 212 extends along a bending axis L, and the bending axis L is parallel to the first edge 120. For example, the bending axis L extends along the second direction Y.

[0048] Optionally, the number of the first conductive portion 211 is one, and one first conductive portion 211 is connected to one end of the second conductive portion 212 in the second direction Y.

[0049] Alternatively, the first conductive layer 210 includes two first conductive parts 211 , and the second conductive part 212 is connected between the two first conductive parts 211 , so that the force applied to the flexible circuit board 200 is more balanced.

[0050] In other embodiments, Figure 5 As shown, the first conductive layer 210 includes two first conductive parts 211 and two second conductive parts 212. The two second conductive parts 212 are spaced apart between the two first conductive parts 211, and each second conductive part 212 is connected to one first conductive part 211. For example, see Figure 5 In the viewing direction shown, the first conductive portion 211 on the left is connected to the second conductive portion 212 on the left, and the first conductive portion 211 on the right is connected to the second conductive portion 212 on the right, and the two second conductive portions 212 are spaced apart.

[0051] Optionally, the second conductive part 212 is connected to the end of the first conductive part 211, or the second conductive part 212 is connected to the middle of the first conductive part 211, that is, the shape formed by the combination of the first conductive part 211 and the second conductive part 212 can be H-shaped or U-shaped.

[0052] In some optional embodiments, the number of the first opening 221 may be one, and one first opening 221 extends along the extension direction of the first edge 120 , for example, one first opening 221 extends along the second direction Y.

[0053] Or, as Figure 6 As shown, there are multiple first openings 221, and the multiple first openings 221 are spaced apart along the extension direction of the second conductive portion 212. For example, the multiple first openings 221 are spaced apart along the second direction Y, so that static electricity at different positions on the second direction Y can be released to the second conductive portion 212 through the first openings 221.

[0054] Alternatively, referring to the above, the flexible circuit board 200 is disposed on one side of the display area in the first direction X, the second conductive portion 212 extends in the second direction Y, the first direction X and the second direction Y intersect, and both the first direction X and the second direction Y are parallel to the display surface of the display panel 100. Optionally, both the first direction X and the second direction Y may be perpendicular to the thickness direction.

[0055] In some optional embodiments, such as Figure 7 As shown, the flexible circuit board 200 also includes non-bending areas NW located on both sides of the bending area WA; the first conductive layer 210 also includes a third conductive portion 213, the third conductive portion 213 is located in at least one non-bending area NW, and the first conductive portion 211 and the third conductive portion 213 are electrically connected to each other.

[0056] In these optional embodiments, the first conductive layer 210 is provided with a third conductive portion 213 in the non-bending area NW, and the third conductive portion 213 can be electrically connected to the above-mentioned constant signal end. The first conductive portion 211 and the third conductive portion 213 are electrically connected to each other. Compared with the solution in which the first conductive portion 211 is directly electrically connected to the constant signal end, the extension length of the first conductive portion 211 can be reduced, and the distribution area of ​​the first conductive layer 210 can be increased, thereby improving the electrostatic release effect.

[0057] Optionally, the third conductive portion 213 and the second conductive portion 212 are spaced apart to reduce the distribution area of ​​the conductive material in the bending area WA and improve the bending performance of the flexible circuit board 200 .

[0058] Optionally, the number of the non-bending regions NW is two, and the third conductive portion 213 may be provided in both non-bending regions NW, or in one of the non-bending regions NW.

[0059] Optional, such as Figure 7 and Figure 8 As shown, the flexible circuit board 200 also includes an insulating substrate layer 230 and a fourth conductive part 240. The insulating substrate layer 230 is located on the side of the first conductive layer 210 away from the first covering layer 220. The fourth conductive part 240 is located on the side of the insulating substrate layer 230 away from the first conductive layer 210. The fourth conductive part 240 is connected to the third conductive part 213 via a hole.

[0060] In these optional embodiments, a fourth conductive portion 240 is provided on the side of the flexible circuit board 200 facing away from the insulating substrate layer 230, and the third conductive portion 213 and the fourth conductive portion 240 are connected by vias, which can increase the distribution area of ​​the ground layer and improve the electrostatic discharge effect.

[0061] The third conductive portion 213 and the fourth conductive portion 240 can be shaped in various ways. For example, the third conductive portion 213 and the fourth conductive portion 240 can be planar, i.e., without through-holes or other structures, thereby increasing the distribution area of ​​the third conductive portion 213 and the fourth conductive portion 240. Alternatively, the third conductive portion 213 and / or the fourth conductive portion 240 can be mesh-shaped to enhance the deformability of the flexible circuit board 200.

[0062] The shapes and distribution areas of the third conductive portion 213 and the fourth conductive portion 240 may be the same or different.

[0063] Optionally, the flexible circuit board further includes a connecting portion located on the non-display side of the display panel, the connecting portion including a connecting pin electrically connected to the constant signal terminal, and the fourth conductive portion extends to the connecting portion and is electrically connected to the connecting pin, so that the fourth conductive portion is electrically connected to the constant signal terminal via the connecting pin of the connecting portion.

[0064] In some optional embodiments, the flexible circuit board 200 further includes a second binding portion 250, which is bound and connected to the first binding portion 110. Optionally, the second binding portion 250 is disposed on the side of the bending area WA facing the display panel 100. In these optional embodiments, the flexible circuit board 200 is bound and connected to the first binding portion 110 via the second binding portion 250.

[0065] Optionally, the flexible circuit board 200 also includes a connecting portion 260 located on the non-display side of the display panel 100, the connecting portion 260 includes a connecting pin 261, the connecting pin 261 is electrically connected to the constant signal end, and the first conductive portion 211 extends to the connecting portion 260 and is electrically connected to the connecting pin 261.

[0066] In these optional embodiments, a connecting portion 260 is provided on the flexible circuit board 200, and a connecting pin 261 is provided in the connecting portion 260. The connecting pin 261 can be connected to the above-mentioned constant signal end. The first conductive portion 211 can extend to the connecting portion 260 and be electrically connected to the connecting pin 261, so that static electricity can be released to the connecting pin 261 through the first conductive portion 211.

[0067] In some optional embodiments, when the flexible circuit board 200 also includes the above-mentioned insulating substrate layer 230 and the fourth conductive part 240, the connecting pin 261 and the fourth conductive part 240 are connected by a via, and the fourth conductive part 240 and the first conductive part 211 or the above-mentioned third conductive part 213 are electrically connected, so that the first conductive part 211 can be electrically connected to the connecting pin 261 through the fourth conductive part 240.

[0068] Optionally, other connection terminals may be provided within the connection portion 260, allowing the flexible circuit board 200 to be connected to a main control board or other structure of the display device via the connection terminals. Optionally, the connection terminals are distributed along the second direction Y, and the connection pins 261 may be provided on both sides of the connection terminals in the second direction Y, with the connection pins 261 being located outboard of the other connection terminals in the second direction Y, to minimize the impact of the connection pins 261 on the connection between the connection terminals and other components.

[0069] Optionally, the display panel 100 includes a functional layer 130, and the second binding portion 250 is provided with a second binding pin 251, and the second binding pin 251 is electrically connected to the functional layer 130. Optionally, the functional layer 130 may be a touch functional layer 130, and the flexible circuit board 200 may be electrically connected to the touch functional layer 130 via the first binding pin and the second binding pin 251 to transmit control signals to the touch functional layer 130. Optionally, the touch functional layer 130 is located on a side of the encapsulation layer away from the second electrode layer.

[0070] Optionally, the flexible circuit board 200 includes an insulating substrate layer 230, the first conductive layer 210 is arranged on one side of the insulating substrate layer 230, the connecting pin 261 is arranged on the side of the insulating substrate layer 230 away from the first conductive layer 210, and the first conductive part 211 and the connecting pin 261 are connected by vias.

[0071] Optionally, the connecting pin 261 can be electrically connected to the third conductive part 213 located on the side of the insulating substrate layer 230 facing the first conductive layer 210 or away from the first conductive layer 210, and the first conductive part 211 can be electrically connected to the third conductive part 213, so that the first conductive part 211 is electrically connected to the connecting pin 261 through the third conductive part 213.

[0072] In some optional embodiments, the flexible circuit board 200 may include a second conductive layer 270 , and the second binding pin 251 may be disposed on the second conductive layer 270 . Optionally, the connecting pin 261 and the at least one third conductive portion 213 may also be disposed on the second conductive layer 270 .

[0073] Optionally, the flexible circuit board 200 includes an insulating substrate layer 230, a first conductive layer 210 is arranged on one side of the insulating substrate layer 230, a second conductive layer 270 is arranged on the side of the insulating substrate layer 230 away from the first conductive layer 210, and a first covering layer 220 is arranged on the side of the first conductive layer 210 away from the insulating substrate layer 230.

[0074] Optionally, the flexible circuit board 200 further includes a second cover layer 280. The second cover layer 280 covers the side of the second conductive layer 270 facing away from the insulating substrate layer 230. The second cover layer 280 has a second opening extending therethrough, and the second binding pin 251 is electrically connected to the first binding pin via the second opening. Covering the second conductive layer 270 with the second cover layer 280 provides protection for the second conductive layer 270.

[0075] The materials of the second cover layer 280 and the first cover layer 220 may be the same or different. For example, the material of the second cover layer 280 includes an inorganic insulating material, so that the thickness of the second cover layer 280 can be set to be smaller.

[0076] In some optional embodiments, the first conductive layer 210 and / or the second conductive layer 270 are single-layer structures to simplify the structure of the flexible circuit board 200 and facilitate the preparation and molding of the flexible circuit board 200. Alternatively, the first conductive layer 210 and / or the second conductive layer 270 include two or more sub-layers to increase the distribution of the conductive material and improve the conductivity of the flexible circuit board 200.

[0077] Optionally, the material of the first conductive layer 210 and / or the second conductive layer 270 includes copper, so that the first conductive layer 210 and / or the second conductive layer 270 has good conductivity and low manufacturing cost.

[0078] Optionally, the first conductive layer 210 and / or the second conductive layer 270 include a copper foil layer and a copper plating layer stacked in a direction away from the insulating substrate layer 230, so that the first conductive layer 210 and / or the second conductive layer 270 can be prepared using a mature process, thereby simplifying the preparation process of the flexible circuit board 200.

[0079] Please continue to refer to the above, in some optional embodiments, such as Figure 1 and Figure 2 As shown, the display device further includes a cover plate 300 disposed on one side of the display panel 100 and the flexible circuit board 200. The display panel 100 has a display side and a non-display side that are opposite to each other in a third direction. The projections of the display panel 100 and the flexible circuit board 200 along the third direction are located within the projection of the cover plate 300 along the third direction. The third direction is the thickness direction of the display device.

[0080] In the embodiment of the present application, the projections of the display panel 100 and the flexible circuit board 200 along the third direction are located within the projection of the cover plate 300 along the third direction, so that the cover plate 300 can provide protection for the display panel 100 and the flexible circuit board 200 .

[0081] Optionally, the display panel 100 includes a first edge 120, the flexible circuit board 200 is disposed on the side of the first edge 120, and the cover plate 300 extends beyond the first edge 120, with a first distance H1 between the cover plate 300 and the first edge 120 being less than or equal to 1 mm, thereby achieving a narrow bezel of the display device. For example, the first distance H1 is 0.8 mm.

[0082] When the first distance H1 is less than or equal to 1 mm, the edge of the cover plate 300 is relatively close to the bending vertex (bending axis L) of the flexible circuit board 200. Static electricity on the cover plate 300 side is easily transferred to the flexible circuit board 200 and then to the display panel 100 via the flexible circuit board 200, affecting the yield of the display panel 100. In the embodiment of the present application, the flexible circuit board 200 is provided with the aforementioned first conductive layer 210 and first cover layer 220. The first cover layer 220 is provided with a first opening 221. This allows static electricity on the cover plate 300 side to be transferred to the first conductive layer 210 through the first opening 221 for discharge, thereby reducing or even eliminating static electricity transferred to the display panel 100 and improving the yield of the display panel 100.

[0083] like Figures 1 to 8 As shown, an embodiment of the second aspect of the present application further provides a flexible circuit board 200. The flexible circuit board 200 is used for a display device, and the display device includes a display panel 100, and the display panel 100 includes a first binding portion 110. The display device can be any of the display devices provided in the first aspect, and the flexible circuit board 200 can be the flexible circuit board 200 of the display device provided in any of the first aspect. For example, the flexible circuit board 200 includes an insulating substrate layer 230; a first conductive layer 210 disposed on one side of the insulating substrate layer 230, and the first conductive layer 210 is used to electrically connect to a constant signal terminal of the display device; and a first covering layer 220 covering a side of the first conductive layer 210 facing away from the insulating substrate layer 230. The first covering layer 220 is provided with a first opening 221, and at least a portion of the first conductive layer 210 is exposed through the first opening 221.

[0084] When the flexible circuit board 200 provided in the embodiment of the present application is used in a display device, the flexible circuit board 200 is provided with the above-mentioned first conductive layer 210 and first covering layer 220. The first covering layer 220 is provided with a first opening 221, so that static electricity on the side of the cover plate 300 can be transmitted to the first conductive layer 210 through the first opening 221 for release, thereby reducing or even eliminating static electricity transmitted to the display panel 100, thereby improving the yield of the display panel 100.

[0085] The flexible circuit board 200 provided in the embodiment of the present application and the flexible circuit board 200 of the display device of any of the above-mentioned first embodiment can be cross-referenced with each other and will not be described in detail here.

[0086] The flexible circuit board 200 provided in the second embodiment of the present application can be cross-referenced with the flexible circuit board 200 of the display device provided in any of the first embodiments described above, and will not be described in detail here. For example, the flexible circuit board 200 provided in the second embodiment of the present application includes the aforementioned bending area WA, non-bending area NW, first conductive portion 211, and second conductive portion 212.

[0087] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0088] The present application can be implemented in other specific forms without departing from its spirit and essential characteristics. For example, the algorithm described in the specific embodiment can be modified, and the system architecture does not depart from the basic spirit of the present application. Therefore, the current embodiment is considered to be exemplary and not restrictive in all aspects, and the scope of the present application is defined by the appended claims rather than the above description, and all changes that fall within the scope of the meaning and equivalents of the claims are thereby included within the scope of the present application.

Claims

1. A display device, characterized in that: include: The display panel comprises a display area and a first binding portion located on at least one side of the display area; a flexible circuit board, bound and connected to the first binding portion and bent to the non-display side of the display panel; In which, the display device also includes a constant signal terminal, the flexible circuit board includes a first conductive layer and a first covering layer covering the first conductive layer, the first covering layer has a first opening, at least part of the first conductive layer is exposed by the first opening, and the first conductive layer and the constant signal terminal are electrically connected.

2. The display device according to claim 1, wherein The flexible circuit board includes a bending area, and the first opening is at least located in the bending area; Preferably, the flexible circuit board further comprises an insulating base material layer, wherein the insulating base material layer is located on a side of the first conductive layer away from the first covering layer, and the first covering layer is located on a side of the insulating base material layer away from the display panel; Preferably, the display device further comprises a cover plate, the cover plate being arranged on a display side of the display panel, the display panel comprising a first edge, the flexible circuit board and the first edge being located on the same side of the display panel, and the cover plate extending beyond the first edge; When the flexible circuit board is in a flattened state, the portion of the cover plate extending out of the first edge covers the first opening; Preferably, the display device also includes a cover plate, which is arranged on the display side of the display panel; when the flexible circuit board is in a bent state, the first opening is located on a side of a preset plane close to the cover plate, the bending axis of the bending zone is located in the preset plane, and the preset plane is perpendicular to the thickness direction of the display panel.

3. The display device according to claim 2, wherein: The first conductive layer includes a first conductive portion and a second conductive portion electrically connected to each other. An angle is formed between the first conductive portion and the second conductive portion, and at least a portion of the second conductive portion is exposed from the first opening.

4. The display device according to claim 3, wherein: The display panel includes a first edge, and the flexible circuit board and the first edge are located on the same side of the display panel; the portion of the second conductive portion exposed by the first opening is strip-shaped, and the extension direction of the portion of the second conductive portion exposed by the first opening is parallel to the first edge; Preferably, the first opening is strip-shaped and parallel to the first edge; Preferably, the width of the portion of the second conductive portion exposed by the first opening is smaller than the width of the first strip-shaped opening; Preferably, at least a portion of the first conductive portion is in a strip shape, and the first conductive portion is bent around the bending axis of the bending zone; Preferably, the first conductive layer includes two first conductive parts, and the second conductive part is connected between the two first conductive parts; Preferably, the first conductive layer includes two first conductive parts and two second conductive parts, the two second conductive parts are spaced apart between the two first conductive parts, and each second conductive part is correspondingly connected to one first conductive part; Preferably, the second conductive part is connected to an end portion of the first conductive part, or the second conductive part is connected to a middle portion of the first conductive part.

5. The display device according to claim 3, wherein The number of the first opening is one, or the number of the first opening is multiple, and the multiple first openings are distributed at intervals along the extending direction of the second conductive portion.

6. The display device according to claim 5, wherein: The flexible circuit board is arranged on one side of the display area in the first direction, the extension direction of the second conductive portion is the second direction, the first direction and the second direction intersect, and the first direction and the second direction are both parallel to the display surface of the display panel.

7. The display device according to claim 3, wherein: The flexible circuit board further includes non-bending areas located on both sides of the bending area; The first conductive layer further includes a third conductive portion, the third conductive portion is located in at least one of the non-bending regions, and the first conductive portion and the third conductive portion are electrically connected to each other.

8. The display device according to claim 7, wherein: The flexible circuit board further includes an insulating base layer and a fourth conductive portion, the insulating base layer being located on a side of the first conductive layer facing away from the first covering layer, the fourth conductive portion being located on a side of the insulating base layer facing away from the first conductive layer, and the fourth conductive portion being connected to the third conductive portion via a via hole; Preferably, the third conductive portion and / or the fourth conductive portion are in a planar or mesh shape; Preferably, the flexible circuit board also includes a connecting portion located on the non-display side of the display panel, the connecting portion includes a connecting pin, the connecting pin is electrically connected to the constant signal end, and the fourth conductive portion extends to the connecting portion and is electrically connected to the connecting pin.

9. The display device according to claim 3, wherein: The flexible circuit board further includes a second binding portion, and the second binding portion is bound and connected to the first binding portion; The flexible circuit board also includes a connecting portion located on the non-display side of the display panel, the connecting portion includes a connecting pin, the connecting pin is electrically connected to the constant signal end, and the first conductive portion extends to the connecting portion and is electrically connected to the connecting pin.

10. The display device according to claim 9, wherein: The flexible circuit board includes an insulating substrate layer, the first conductive layer is arranged on one side of the insulating substrate layer, the connecting pin is arranged on a side of the insulating substrate layer away from the first conductive layer, and the first conductive portion and the connecting pin are connected via a hole.

11. The display device according to claim 10, wherein: The display panel includes a functional layer, the second binding portion is provided with a second binding pin, and the second binding pin is electrically connected to the functional layer; Preferably, the functional layer is a touch functional layer.

12. The display device according to claim 1, wherein The first conductive layer is a single-layer structure, or the first conductive layer includes two or more sub-layers; Preferably, the material of the first conductive layer includes copper; Preferably, the first conductive layer comprises a copper foil layer and a copper deposition layer stacked together; Preferably, the material of the first covering layer includes polyimide.

13. The display device according to claim 1, wherein The display device further includes: a cover plate, which is arranged on the display side of the display panel, the display panel having the display side and the non-display side opposite to each other in a third direction, and the projection of the display panel and the flexible circuit board along the third direction is located within the projection of the cover plate along the third direction.

14. The display device according to claim 13, wherein: The display panel includes a first edge, the flexible circuit board and the first edge are located on the same side of the display panel, the cover plate extends beyond the first edge, and a first distance that the cover plate extends from the first edge is less than or equal to 1 mm; Preferably, the first distance is 0.8 mm.

15. A flexible circuit board, characterized in that: The flexible circuit board is used for a display device, the display device includes a display panel, the display panel includes a display area and a first binding portion located on at least one side of the display area, the flexible circuit board can be bound and connected to the first binding portion, and the flexible circuit board includes: an insulating substrate layer; a first conductive layer, disposed on one side of the insulating base layer, the first conductive layer being electrically connected to a constant signal terminal of the display device; The first covering layer covers a side of the first conductive layer away from the insulating base layer. The first covering layer is provided with a first opening, and at least a portion of the first conductive layer is exposed through the first opening.

16. The flexible circuit board according to claim 15, wherein: The flexible circuit board can be bent to the non-display side of the display panel, and the first opening is at least located in the bending area of ​​the flexible circuit board; Preferably, the first covering layer is provided on a side of the insulating base layer facing away from the display panel; Preferably, the flexible circuit board further includes a second binding portion, which is provided on a side of the insulating base material layer away from the first conductive layer and is used for binding and connecting with the first binding portion; Preferably, when the flexible circuit board is in a bent state, the first opening is located on a side of a preset plane close to the second binding portion, the bending axis of the bending zone is located in the preset plane, and the preset plane is perpendicular to the thickness direction of the display device.

17. The flexible circuit board according to claim 15, wherein: The first conductive layer includes a first conductive portion and a second conductive portion electrically connected to each other, an angle is formed between the first conductive portion and the second conductive portion, and at least a portion of the second conductive portion is exposed from the first opening; Preferably, the first conductive layer includes two first conductive parts, the two first conductive parts are arranged opposite to each other along the extension direction of the second conductive part, and the second conductive part is connected between the two first conductive parts; Preferably, the first conductive layer includes two first conductive parts and two second conductive parts, the two second conductive parts are spaced apart between the two first conductive parts, and each second conductive part is connected to each first conductive part; Preferably, the second conductive portion is connected to an end portion of the first conductive portion, or the second conductive portion is connected to a middle portion of the first conductive portion; Preferably, the number of the opening is one, or the number of the opening is multiple, and the multiple openings are distributed at intervals along the extension direction of the second conductive portion.

18. The flexible circuit board according to claim 17, wherein: The flexible circuit board can be bent from the display side of the display panel to the non-display side of the display panel, so that the flexible circuit board includes a bending area and non-bending areas located on both sides of the bending area; The first conductive layer further includes a third conductive portion, the third conductive portion is located in at least one of the non-bending regions, and the first conductive portion and the third conductive portion are electrically connected to each other.

19. The flexible circuit board according to claim 18, wherein: The flexible circuit board further includes an insulating base layer and a fourth conductive portion, the insulating base layer being located on a side of the first conductive layer facing away from the first covering layer, the fourth conductive portion being located on a side of the insulating base layer facing away from the first conductive layer, and the fourth conductive portion being connected to the third conductive portion via a via hole; Preferably, the third conductive portion and / or the fourth conductive portion are planar or mesh-shaped.

20. The flexible circuit board according to claim 19, wherein: The flexible circuit board also includes a connecting portion, which is located on the same side of the insulating substrate layer as the fourth conductive portion. The connecting portion includes a connecting pin, which is electrically connected to the constant signal end. The fourth conductive portion extends to the connecting portion and is electrically connected to the connecting pin.

Images