Disclosure of Invention
The invention provides a display device and a display device, which are used for improving the screen occupation ratio of the display device.
In a first aspect, an embodiment of the present invention provides a display device, including a display panel, where the display panel includes a substrate, the substrate includes a front surface, a back surface, and an end surface connecting the front surface and the back surface, and the end surface is an arc end surface; the substrate is provided with a first connecting terminal, and at least part of the first connecting terminal is positioned on the arc-shaped end surface;
the flexible connecting piece, be provided with second connecting terminal on the flexible connecting piece, second connecting terminal with first connecting terminal is connected, flexible connecting piece follows the arc terminal surface is buckled extremely the back of basement.
Optionally, a driving chip is arranged on the flexible connecting piece; the back of the substrate is provided with a groove, and the driving chip is located in the groove.
Optionally, the flexible connector further comprises an adhesive layer, and the flexible connector is fixedly connected with the substrate through the adhesive layer.
Optionally, the adhesive layer includes a first adhesive layer and a second adhesive layer, the first adhesive layer is filled between the first connection terminal and the second connection terminal, and the second adhesive layer is filled between the substrate and a portion between the second connection terminal and the driving chip;
the first adhesive layer is made of anisotropic conductive adhesive, and the second adhesive layer is made of anisotropic conductive adhesive or double-sided adhesive.
Optionally, the arc end surface is arc-shaped.
Optionally, the first connection terminal is located only on the arc-shaped end surface.
Optionally, the first connection terminal is located on the front surface and the end surface, and the first connection terminal extends from the front surface to the end surface;
or the first connecting terminal is located on the front surface, the end surface and the back surface, and the first connecting terminal extends from the front surface to the back surface through the end surface;
or, the first connection terminal is located on the end surface and the back surface, and the first connection terminal extends from the end surface to the back surface.
Optionally, the flexible connector is a flip chip film or a flexible circuit board.
Optionally, the substrate has a thickness of at least 1 mm.
In a second aspect, an embodiment of the present invention further provides a display apparatus, including the display device according to the first aspect.
The display device comprises the display panel and the flexible connecting piece, wherein the display panel comprises a substrate, the substrate comprises a front surface, a back surface and an end surface for connecting the front surface and the back surface, and the end surface is an arc-shaped end surface; the substrate is provided with a first connecting terminal, and at least part of the first connecting terminal is positioned on the arc-shaped end surface; the flexible connecting piece is provided with a second connecting terminal, the second connecting terminal is connected with the first connecting terminal, and the flexible connecting piece is bent to the back of the substrate along the arc-shaped end face. First connection terminal is located the arc terminal surface at least partially, is guaranteeing first connection terminal length, is guaranteeing promptly under the condition that flexible connectors and display panel electricity are connected stability, has reduced the width of first connection terminal on being on a parallel with the positive side of basement, has reduced the frame, has improved the screen and has accounted for the ratio. Meanwhile, the end face is an arc-shaped end face, so that the flexible connecting piece can be bent along the arc-shaped end face, and the flexible connecting piece can be prevented from being damaged; the flexible connecting piece can also be attached to the surface of the substrate, and the situation that the size of the display device is increased due to warping of the flexible connecting piece is avoided.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Just like the technical problem that the display device described in the background art cannot further improve the screen occupation ratio, the inventor finds that the reason for generating the technical problem is that in order to improve the screen occupation ratio, the bonding end space of the module structure in the prior art is smaller and smaller, the size of each step reaches the limit level, and the size of each step cannot be further reduced. As shown in fig. 1, fig. 1 is a schematic structural diagram of a conventional display device, where the conventional display device includes a substrate 111, a light-emitting functional layer 121, a touch substrate 131, and a polarizer 141; for the display device with the flexible connecting member 211, after the flexible connecting member 211 is bound with the first connecting terminal 1041, the flexible connecting member 211 needs to be bent to the back of the substrate 111 of the display device, because the flexible connecting member 211 has a certain thickness and the side of the substrate 111 needs to be coated with the UV glue 2011, the flexible connecting member 211 exceeds the edge of the substrate by a certain distance when being bent, so that the frame of the display panel is increased; and a gap exists between the flexible connector 211 and the substrate 111, so that the flexible connector 211 is easy to bounce off the components connected with the flexible connector on the back surface of the substrate 111, thereby increasing the size of the display device in the direction z.
Based on the technical problem, the invention provides the following solution:
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 2, the display device 19 includes a display panel, the display panel includes a substrate 11, the substrate 11 includes a front surface 101, a back surface 102, and an end surface 103 connecting the front surface 101 and the back surface 102, the end surface 103 is an arc-shaped end surface; a first connecting terminal 104 is arranged on the substrate 11, and at least part of the first connecting terminal 104 is positioned on the arc-shaped end surface;
a flexible connecting member 21, wherein a second connecting terminal (not shown) is arranged on the flexible connecting member 21, the second connecting terminal is connected with the first connecting terminal 104, and the flexible connecting member 21 is bent to the back surface 102 of the substrate 11 along the arc-shaped end surface.
Specifically, the base 11 may be a substrate of a display panel, the first connection terminal 104 on the display panel is a pad, and the first connection terminal may be connected to an upper signal line of the display panel, for example, a data line, a clock signal line, a power line, and the like. The second connection terminal on the flexible connection element 21 is a pad, and is also commonly referred to as a gold finger, and the second connection terminal of the flexible connection element 21 is connected to the first connection terminal 104 in a bonding manner, for example, the second connection terminal is connected to the first connection terminal 104 through an anisotropic conductive adhesive. The flexible connecting piece 21 can be provided with a driving chip, or the other end of the flexible connecting piece 21 opposite to the second connecting terminal is connected with a circuit board provided with the driving chip, and the circuit on the flexible connecting piece 21, the second connecting terminal and the first connecting terminal 104 on the display panel realize the electric connection between the display panel and the driving chip, so that a driving signal output by the driving chip can be transmitted to the display panel to drive the display panel to work; because the first connection terminal 104 needs a certain length to ensure the stability of the electrical connection between the flexible connection member 21 and the display panel, and by extending the first connection terminal 104 onto the arc-shaped end surface, under the condition of ensuring the length of the first connection terminal 104, i.e. under the condition of ensuring the stability of the electrical connection between the flexible connection member 21 and the display panel, the width of the first connection terminal 104 in the direction x parallel to the front surface 101 of the substrate 11 is reduced, i.e. the width of the substrate 11 in the direction x is reduced, and then the frame of the display panel is reduced, and the screen occupation ratio is improved. Meanwhile, the end surface 103 is an arc end surface, the flexible connecting piece 21 can be bent to the back surface of the substrate 11 along the arc end surface 103, the contact surface between the flexible connecting piece 21 and the substrate 11 is smooth, and the flexible connecting piece 21 can be prevented from being damaged; and because the flexible connecting piece 21 can be attached to the surface of the substrate 11, the gap between the flexible connecting piece 21 and the substrate 11 is small, or no gap exists, so that the situation that the size of the display device is increased due to the fact that the flexible connecting piece 21 is easy to bounce from a part connected with the flexible connecting piece on the back surface of the substrate 11 can be prevented, namely, the size of the display device in the direction z can be reduced. The Flexible connector is typically a COF (Chip on Film) or an FPC (Flexible Printed Circuit). COF or FPC all can attach on the surface of basement to buckle driver chip to the back of basement, and then reduce display panel's frame, improve the screen and account for the ratio.
According to the technical scheme of the embodiment, the display device comprises the display panel and the flexible connecting piece, wherein the display panel comprises a substrate, the substrate comprises a front surface, a back surface and an end surface for connecting the front surface and the back surface, and the end surface is an arc-shaped end surface; the substrate is provided with a first connecting terminal, and at least part of the first connecting terminal is positioned on the arc-shaped end surface; the flexible connecting piece is provided with a second connecting terminal, the second connecting terminal is connected with the first connecting terminal, and the flexible connecting piece is bent to the back of the substrate along the arc-shaped end face. First connection terminal is located the arc terminal surface at least partially, is guaranteeing first connection terminal length, is guaranteeing promptly under the condition that flexible connectors and display panel electricity are connected stability, has reduced the width of first connection terminal on being on a parallel with the positive side of basement, has reduced the frame, has improved the screen and has accounted for the ratio. Meanwhile, the end face is an arc-shaped end face, so that the flexible connecting piece can be bent along the arc-shaped end face, and the flexible connecting piece can be prevented from being damaged; the flexible connecting piece can also be attached to the surface of the substrate, and the situation that the size of the display device is increased due to warping of the flexible connecting piece is avoided.
Illustratively, the arc-shaped end surface is arc-shaped, so that when the flexible connector 21 is attached to the substrate 11, the contact part between the flexible connector 21 and the end surface 103 is uniformly stressed, and the flexible connector 21 can be further prevented from being damaged, thereby prolonging the service life of the display device 19.
Optionally, fig. 3 is a schematic structural diagram of another display device according to an embodiment of the present invention, and parts identical to those of the display device shown in fig. 1 are not repeated, referring to fig. 3, a driving chip 121 is disposed on the flexible connecting member 21; the back surface of the substrate 11 is provided with a groove 105, and the driving chip 121 is located in the groove 105.
Exemplarily, the driving chip 121 is configured to provide a driving signal for the operation of the display panel, and the display panel may further include a light-emitting functional layer 12, a touch substrate 13 and a polarizer 14, which are stacked in sequence, and the specific working principle of the driving chip is well known to those skilled in the art, and a certain gap needs to be reserved between the first connection terminal 104 and the light-emitting functional layer 12 to ensure the yield of the display panel, that is, in the prior art, the gap between the first connection terminal 104 and the light-emitting functional layer 12 cannot be further shortened, so that the frame cannot be further reduced; by arranging the first connection terminal 104 at least partially on the end surface 103, the width of the first connection terminal 104 in the direction x can be reduced, that is, the width of the substrate 11 is reduced, the frame is shortened, and the screen occupation ratio is improved; meanwhile, the driving chip 121 is disposed in the groove 105, so that the portion of the flexible connecting member 21 that is not bonded to the driving chip 121 is attached to the substrate 11, that is, a gap does not exist between the flexible connecting member 21 and the substrate 11, and thus, when a gap exists between the flexible connecting member 21 and the substrate 11, the flexible connecting member 21 is prevented from being easily bounced to warp between the flexible connecting member 21 and the substrate 11, and the size of the display device is increased due to warping of the flexible connecting member 21.
Optionally, a gap is formed between the driving chip 121 and the groove 105, that is, the driving chip 121 is not in contact with the substrate 11, which is beneficial to heat dissipation of the driving chip 121 on one hand, and on the other hand, the phenomenon that the driving chip 121 is damaged due to an interaction force between the driving chip 121 and the substrate 11 when the display device 19 is vibrated (for example, the display device falls) can be prevented, so that the working stability of the display device 19 is improved.
Optionally, fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 4, on the basis of the above embodiment, the display device 19 further includes an adhesive layer 122, and the flexible connecting member 21 is fixedly connected to the substrate 11 through the adhesive layer 122.
Specifically, the adhesive layer 122 can adhere the flexible connecting element 21 to the substrate 11, so as to improve the firmness between the flexible connecting element 212 and the substrate 11; meanwhile, the adhesive layer 122 can further prevent a gap from being generated between the flexible connecting member 21 and the substrate 11, and prevent the flexible connecting member 21 from being raised to increase the size of the display device.
Alternatively, fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 4 and 5, the adhesive layer 122 includes a first adhesive layer 1221 and a second adhesive layer 1222, the first adhesive layer 1221 is filled between the first connection terminal 104 and the second connection terminal, and the second adhesive layer 1222 is filled between the portion of the flexible connection member 21 between the second connection terminal and the driving chip 105 and the substrate 11; the first adhesive layer 1221 and the second adhesive layer 1222 are made of anisotropic conductive adhesive.
Specifically, a first glue layer 1221 is filled between the second connection terminal on the flexible connection member 21 and the first connection terminal 104 on the substrate 11; a second glue layer 1222 is filled between the substrate 11 and the region of the flexible connector 21 between the second connection terminal and the portion for binding the driving chip 121; first glue film 1221 and second glue film 1222 all can adopt the anisotropic conducting resin, when guaranteeing to connect electrically between first connecting terminal 104 and the second connecting terminal, still can accomplish the preparation of glue film 122 through once preparation process only, has saved the preparation process, is favorable to reduce cost.
Alternatively, fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 4 and 6, the adhesive layer 122 includes a first adhesive layer 1221 and a second adhesive layer 1222, the first adhesive layer 1221 is filled between the first connection terminal 104 and the second connection terminal, and the second adhesive layer 1222 is filled between the portion of the flexible connection member 21 between the second connection terminal and the driving chip 105 and the substrate 11; the first adhesive layer 1221 is an anisotropic conductive adhesive, and the second adhesive layer 1222 is a double-sided adhesive.
Specifically, a first glue layer 1221 is filled between the second connection terminal on the flexible connection member 21 and the first connection terminal 104 on the substrate 11; a second adhesive layer 1222 is filled between the flexible connecting member 21 and the substrate 11 in an area between the second connecting terminal and the portion for binding the driving chip 121, and the first adhesive layer 1221 may be an anisotropic conductive adhesive, which can ensure the electrical connection between the first connecting terminal 104 and the second connecting terminal; the second adhesive layer 1222 is a double-sided adhesive tape, which can firmly attach the flexible connecting member 21 to the substrate 11, further improve the connection stability between the flexible connecting member 21 and the substrate 11, and prevent the size of the display device from being increased due to the flexible connecting member 21 being warped.
Optionally, fig. 7 is a schematic structural diagram of another display device according to an embodiment of the present invention, and referring to fig. 7, the display device 19 includes a display panel, the display panel includes a substrate 11, the substrate 11 includes a front surface 101, a back surface 102, and an end surface 103 connecting the front surface 101 and the back surface 102, and the end surface 103 is an arc-shaped end surface; the substrate 11 is provided with a first connection terminal 104, and the first connection terminal 104 is only located on the arc-shaped end surface;
a flexible connecting member 21, wherein a second connecting terminal (not shown) is arranged on the flexible connecting member 21, the second connecting terminal is connected with the first connecting terminal 104, and the flexible connecting member 21 is bent to the back surface 102 of the substrate 11 along the arc-shaped end surface.
Specifically, the first connection terminal 104 is only disposed on the arc-shaped end surface, so that the width of the first connection terminal 104 in the direction x can be reduced to the maximum, that is, the length of the substrate 11 can be reduced to the maximum, and the frame of the display device 19 can be shortened, thereby further improving the screen occupation ratio.
Alternatively, referring to fig. 3, at least a portion of the first connection terminal 104 is located on the front surface 101 and the end surface 103, and the first connection terminal 104 extends from the front surface 101 to the end surface 103;
alternatively, referring to fig. 8, fig. 8 is a schematic structural diagram of another display device according to an embodiment of the present invention, in which the first connection terminal 104 is located on the front surface 101, the end surface 103, and the back surface 102, and the first connection terminal 104 extends from the front surface 101 to the back surface 102 through the end surface 103;
alternatively, referring to fig. 9, fig. 9 is a schematic structural diagram of another display device according to an embodiment of the present invention, in which the first connection terminal 104 is located on the end surface 103 and the back surface 102, and the first connection terminal 104 extends from the end surface 103 to the back surface 102.
Specifically, the first connection terminals 104 extend from the front surface 101 of the substrate 11 to the end surface 103, and only a part of the first connection terminals 104 need to be formed on the end surface 103; the part of the end surface 103 where the first connection terminal 104 needs to be manufactured is finely ground into an arc shape, for example, the smoothness of the part of the end surface 103 where the first connection terminal 104 needs to be manufactured is ensured, so that the yield of the first connection terminal 104 is ensured; the part of the end surface 103 which does not need to be manufactured with the first connecting terminal 104 does not need to be processed finely, and only needs to be manufactured into an arc-shaped structure, so that the manufacturing difficulty of the first connecting terminal 104 can be reduced, the manufacturing time of the end surface 103 is reduced, and the cost is saved. Optionally, as shown in fig. 8, after the first connection terminal 104 extends from the front surface of the substrate 11 to the end surface 103, it further extends to the back surface 102, so as to further extend the length of the first connection terminal 104, and thus the bonding yield of the flexible connection member 21 and the display panel is higher. Optionally, as shown in fig. 9, the first connection terminal 104 extends from the end surface 103 to the back surface 102, and after the flexible connection member 21 is bound with the display panel, the bent portion of the flexible connection member 21 is less, that is, only the portion of the end surface 103 close to the back surface 102 is bent, so that the probability of damage is reduced, and meanwhile, the length of the flexible connection member 21 is smaller, which is beneficial to saving cost. A part of the first connection terminal 104 may be located on the end surface 103, and the position of another part of the first connection terminal 104 is not particularly limited in the embodiment of the present invention.
Optionally, with continued reference to FIG. 9, the substrate 11 has a thickness of at least 1 millimeter.
Specifically, the thickness of the substrate 11 is at least 1 mm, which can ensure that the end surface 103 of the substrate 101 is set to be an arc-shaped end surface, and then the arc-shaped end surface has enough length to be able to set the first connection terminal 104, so that the first connection terminal 104 has a certain length to ensure the stability of the electrical connection between the first connection terminal 104 and the flexible connection member 21. Meanwhile, the distance between the front surface 101 and the back surface 102 of the substrate 11 is set to be at least 1 mm, and it can be further ensured that the groove 105 has enough space to accommodate the driving chip 105, and further the part of the flexible connecting member 21 which is not bonded with the driving chip 121 is attached to the substrate 11, that is, no gap exists between the flexible connecting member 21 and the substrate 11, and further when a gap exists between the flexible connecting member 21 and the substrate 11, the flexible connecting member 21 is easy to bounce at the gap and non-gap junction between the flexible connecting member 21 and the substrate 11, and further the flexible connecting member 21 is caused to enlarge the size of the display device due to warping.
According to the technical scheme of the embodiment, after verification on a specific product, the rebound size of the flexible connecting piece 21 in the direction z can be controlled within 0.3 mm, and the width of the frame can be controlled within 0.4 mm; compared with the flexible connecting piece 21 in the prior art, the bounce size in the direction z is at least 0.8 mm, the frame width is at least 0.6 mm, the improvement is obvious, the screen occupation ratio can be obviously improved, and the display effect is further improved.
Fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 10, a display device 20 includes a display device 19 according to any embodiment of the present invention, and the display device according to any embodiment of the present invention may be a display device with a display function, such as a mobile phone, a computer, and a smart wearable device, which is not limited in this embodiment of the present invention.
The display device provided by the embodiment of the invention comprises the display device provided by the embodiment of the invention, has the same functions and effects, and is not described again here.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.