CN110275355B

CN110275355B - Curved surface display panel and curved surface display device

Info

Publication number: CN110275355B
Application number: CN201910570240.8A
Authority: CN
Inventors: 洪耀武
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2021-12-10
Anticipated expiration: 2039-06-27
Also published as: CN110275355A

Abstract

The embodiment of the invention discloses a curved surface display device and a curved surface display device, wherein the curved surface display panel comprises: the array substrate and the opposite substrate are oppositely arranged, and the protective cover plate is arranged on one side of the opposite substrate, which is far away from the array substrate; the liquid crystal layer is arranged in a liquid crystal box formed by sealing the array substrate and the opposite substrate; wherein, the vertical projection of the opposite substrate on the array substrate is in the array substrate; the opposite substrate comprises a plurality of edges which are sequentially connected end to end, the connecting positions of the two connected edges form corners, at least part of the corners, the edge of the array substrate exceeds the opposite substrate, and the edge area of the array substrate exceeding the opposite substrate is fixedly connected with the protective cover plate. According to the technical scheme provided by the embodiment of the invention, at least part of corners of the array substrate can be fixedly connected with the protective cover plate, so that the box thickness variation is favorably reduced, and the light leakage phenomenon at the corners is favorably improved.

Description

Curved surface display panel and curved surface display device

Technical Field

The invention relates to the technical field of display, in particular to a curved surface display panel and a curved surface display device.

Background

When a large-sized display panel or display device is applied to the field of vehicle mounting, the display panel and the display device are generally designed to be curved for display in order to fit with the structure inside the vehicle. The curved display panel refers to a display panel with a display interface having a radian, and may include a display panel with flexibility prepared on a flexible substrate such as plastic, metal sheet or glass sheet. For the liquid crystal display panel, in the preparation process of the curved liquid crystal display panel, the liquid crystal display panel after being formed into a box can be bent hard to realize the radian display effect of a display interface.

However, in the curved liquid crystal display panel manufactured by the rigid bending technique, light leaks at four corners of a display screen due to the forced bending of the array substrate and the counter substrate in the liquid crystal display panel.

Disclosure of Invention

The embodiment of the invention provides a curved surface display panel and a curved surface display device, which are used for improving the peripheral light leakage phenomenon.

In a first aspect, an embodiment of the present invention provides a curved display panel, including: the array substrate and the opposite substrate are oppositely arranged, and the protective cover plate is arranged on one side, away from the array substrate, of the opposite substrate; the liquid crystal layer is arranged in a liquid crystal box formed by sealing the array substrate and the opposite substrate;

wherein a perpendicular projection of the counter substrate on the array substrate is within the array substrate; the opposed substrate comprises a plurality of edges which are sequentially connected end to end, the connecting position of the two connected edges forms a corner, at least part of the corner, the edge of the array substrate exceeds the opposed substrate, and the edge area of the array substrate exceeds the opposed substrate is fixedly connected with the protective cover plate.

In a second aspect, an embodiment of the present invention further provides a curved display device, including any one of the curved display panels provided in the first aspect.

The curved display panel provided by the embodiment of the invention is arranged in the array substrate by arranging the vertical projection of the opposite substrate on the array substrate; the opposite substrate comprises a plurality of edges which are sequentially connected end to end, the connecting position of the two connected edges forms a corner, at least part of the corner is provided with the edge of the array substrate exceeding the opposite substrate, and the edge area of the array substrate exceeding the opposite substrate is fixedly connected with the protective cover plate, so that at least part of the corner of the array substrate can be fixedly connected with the protective cover plate, the box thickness variation of the array substrate caused by the trend of restoring the plane is favorably reduced, and the light leakage phenomenon at the corner is favorably improved; meanwhile, the bending stress concentration in the array substrate is favorably shifted to the non-display area of the curved display panel, the accumulation of the stress in the display area is reduced, and the stress of the array substrate in the display area for recovering the plane is reduced, so that the problem of corner light leakage of the curved display panel caused by the box thickness change can be solved. When being applied to large-size display or vehicle-mounted display, the curved-surface display panel structure can effectively avoid the problem of corner light leakage while obtaining a better viewing angle, thereby being beneficial to improving the display effect.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, which is to be read in connection with the accompanying drawings.

Fig. 1 is a schematic plane structure diagram of a curved display panel according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A1-A2 in FIG. 1;

FIG. 3 is a schematic view of another cross-sectional structure taken along line A1-A2 in FIG. 1;

fig. 4 is a schematic plan view illustrating another curved display panel according to an embodiment of the present invention;

fig. 5 is a schematic plane structure diagram of another curved display panel according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a process of forming a curved display panel according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a curved display panel according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a curved-surface display device according to an embodiment of the present invention.

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 but not all of the elements associated with the present invention are shown in the drawings.

Fig. 1 is a schematic plane structure diagram of a curved display panel according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional structure diagram taken along a line a1-a2 in fig. 1. Referring to fig. 1 and 2, the curved display panel 10 includes: the array substrate 110 and the opposite substrate 120 are oppositely arranged, and the protective cover plate 130 is arranged on the opposite substrate 120 at the side away from the array substrate 110; the liquid crystal display further comprises a liquid crystal layer 140, wherein the liquid crystal layer 140 is arranged in a liquid crystal box formed by sealing the array substrate 110 and the opposite substrate 120; wherein, the vertical projection of the opposite substrate 120 on the array substrate 110 is in the array substrate 110; the opposite substrate 120 comprises a plurality of edges which are sequentially connected end to end, the connecting position of the two connected edges forms a corner 105, at least part of the corner 105, the edge of the array substrate 110 exceeds the opposite substrate 120, and the edge area of the array substrate 110 exceeding the opposite substrate 120 is fixedly connected with the protective cover plate 130.

The array substrate 110 is provided with a driving circuit for driving the liquid crystal to turn over, so that the light can penetrate through the curved display panel to different degrees. The opposite substrate 120 may be a color film substrate, in which a plurality of color resist blocks with different colors, such as a red color resist block, a green color resist block, and a blue color resist block, are disposed, so that the curved display panel realizes color and white display. The film structures of the array substrate 110 and the color filter substrate 120 may be any structures known to those skilled in the art, and are not repeated nor limited in this embodiment of the present invention.

The protective cover 130 is used to support and protect the array substrate 110 and the array substrate 120 in the curved display panel 10. Meanwhile, in the process of forming the curved display panel 10, the protective cover 130 having a curvature may be hard-bonded to the array substrate 110 and the opposite substrate 120 to make the curved display panel 10 have a curvature. For example, the protective cover 130 may be a glass cover or other type of cover with high transmittance known to those skilled in the art, and the embodiment of the invention is not limited thereto.

The liquid crystal layer 140 is used for realizing deflection at different angles under different driving voltages to control light to penetrate through at different degrees, so as to realize bright and dark display of the curved display panel 10. The liquid crystal layer 140 may include any liquid crystal material known to those skilled in the art, and the embodiment of the invention is not described nor limited herein.

Wherein, regarding each corner as a whole, the corresponding part of the array substrate 110 at each corner beyond the counter substrate 120 can be fixed with the protective cover 130. Alternatively, a partial number of regions corresponding to the entire array substrate 110 beyond the opposite substrate 120 at a plurality of corner positions may be fixed to the protective cover 130. The configuration may be set according to the actual requirement of the curved display panel 10, which is not limited in the embodiment of the present invention.

Illustratively, referring to FIG. 1, each corner is defined by two adjacent edges. At the corner position, a single partial region of the array substrate 110 may be disposed to exceed the opposite substrate 120, or partial regions of two edges of the array substrate 110 parallel to the corner may be disposed to exceed the opposite substrate 110, which may be disposed according to actual requirements of the curved display panel 10, and the embodiment of the invention is not limited thereto.

In addition, the width and the length of the array substrate 110 beyond the opposite substrate 120 along the edge line can be set according to the actual requirement of the curved display panel 10, which is not limited in the embodiment of the invention.

According to the curved display panel 10 provided by the embodiment of the invention, the edge of the array substrate 110 exceeds the opposite substrate 120 by being arranged at least part of the corner 105 of the opposite substrate 120, so that stress generated by bending of the array substrate 110 is concentrated to the area of the array substrate 110 exceeding the opposite substrate 120 in the hard bonding process, thereby reducing the accumulation of stress in the display area 300, and facilitating the improvement of the light leakage phenomenon of the curved display panel 10 caused by the change of the cell thickness caused by the stress. Meanwhile, by arranging the edge region of the array substrate 110 beyond the opposite substrate 120 to be fixedly connected with the protective cover plate 130, at least part of corners of the array substrate 110 can be fixedly connected with the protective cover plate 130, so that the box thickness variation generated by the array substrate 110 due to the trend of restoring the plane is favorably reduced, and the light leakage phenomenon at the corners is favorably improved.

It should be noted that fig. 1 only shows that the shape of the opposite substrate 120 is a quadrilateral, and in other embodiments, the shape of the opposite substrate 120 may also be other polygons known to those skilled in the art, which is not limited by the embodiment of the present invention.

It should be noted that fig. 2 only shows the protective cover 130 as conforming to the contour size and shape of the array substrate 110, and in other embodiments, the protective cover 130 may be disposed beyond the array substrate 110, or the protective cover 130 includes a protective structure surrounding the array substrate 110, or the protective cover 130 is another type of structure known to those skilled in the art, which is not limited by the embodiment of the present invention.

Alternatively, the fixing connection between the array substrate 110 and the protective cover 120 may be a mechanical structure fixing or an adhesive fixing, which is exemplarily described below with reference to fig. 2 and 3.

For example, with continued reference to fig. 2, the curved display panel 10 further includes a first adhesive layer 210 and a second adhesive layer 220; the edge region of the array substrate 110 beyond the opposite substrate 120 is bonded with the protective cover plate 130 through the first adhesive layer 210; the surface of the counter substrate 120 on the side close to the protective cover 130 is bonded to the surface of the protective cover 130 on the side close to the counter substrate 120 by a second adhesive layer 220.

Thus, the surface of the opposite substrate 120 close to the protective cover 130 and the edge area of the array substrate 110 beyond the opposite substrate 120 can be bonded and fixed to the surface of the same side of the protective cover 130 by using an adhesive method, so that the fixing method is simple; and the surface of the protective cover 130 is a smooth surface without an additional design of a fixing structure, so that the protective cover 130 has a simple structure.

For example, the curved display panel 10 may further include a third adhesive layer 230, and the third adhesive layer 230 seals the edges of the array substrate 110 and the opposite substrate 120 to form a liquid crystal cell.

In this structure, optionally, the gap W0 between the first adhesive layer 210 and the second adhesive layer 220 satisfies: w0 is more than or equal to 0mm and less than or equal to 0.3 mm.

By the arrangement, the requirement of attachment tolerance can be met, and the area of the frame region can be prevented from being further increased.

In other embodiments, W0 may be set to satisfy 0mm ≦ W0 ≦ 0.05mm, W0 ≦ 0.1mm, 0.15mm ≦ W0 ≦ 0.2mm, or other value ranges known to those skilled in the art, and the examples of the present invention are not limited thereto. The smaller the gap W0 between the first adhesive layer 210 and the second adhesive layer 220 is, the smaller the frame in the non-display area is formed; meanwhile, when the W0 is smaller, the continuity of the adhesive layer on the protective cover plate is better, and meanwhile, the array substrate and the opposite substrate are stressed more continuously and display is more uniform, so that the corner light leakage phenomenon can be better improved.

It should be noted that fig. 2 shows that the first adhesive layer 210 and the second adhesive layer 220 are separately disposed. In other embodiments, the first adhesive layer 210 and the second adhesive layer 220 can be integrally formed and simultaneously formed, as shown in fig. 3. In this structure, the first adhesive layer 210 and the second adhesive layer 220 are integrated, and are divided into the first adhesive layer 210 and the second adhesive layer 220 to distinguish the regions where the first adhesive layer 210 and the second adhesive layer 220 are adhered to the array substrate 110 or the opposite substrate 120. By such arrangement, the process steps can be saved.

In the process of manufacturing the curved display panel 10, the edge region of the array substrate 110 beyond the opposite substrate 120 may be bonded to the protective cover 130 over the entire area, or may be bonded to the protective cover 130 by dispensing. For example, after the opposite substrate 120 and the protective cover 130 are attached by the second adhesive layer 220, glue may be dispensed on the side edges to fix the array substrate 110 and the protective cover 130; alternatively, after the second adhesive layer 220 is attached to one side of the opposite substrate 120, the first adhesive layer 210 is formed by dispensing on the edge region of the array substrate 110 beyond the opposite substrate 120, and then the protective cover 130 is attached to the first adhesive layer 210 and the second adhesive layer 220 simultaneously. The embodiment of the present invention does not limit the bonding timing.

Alternatively, the material of the first adhesive layer 210 and the second adhesive layer 220 may include optical glue or pressure sensitive glue.

Wherein, because the gluey material self has the antistatic action, so set up, can avoid static to the influence of display effect, be favorable to ensureing better display effect. When touch is integrated in the panel, the influence of static electricity on a touch signal can be avoided, so that the touch accuracy is improved.

Illustratively, the photosensitive adhesive may be an ultraviolet photosensitive adhesive or a laser photosensitive adhesive, and the pressure-sensitive adhesive may be a pressure-sensitive adhesive tape or a pressure-sensitive adhesive.

It should be noted that the first adhesive layer 210 and the second adhesive layer 220 may also be other types of adhesive layer materials and types known to those skilled in the art, and the embodiment of the invention is not limited thereto.

The following describes an exemplary curved display panel provided in an embodiment of the present invention, taking the planar shape of the display panel as a quadrilateral.

With reference to fig. 1, the planar shape of the curved display panel 10 is a quadrilateral, and the opposite substrate 120 includes a first side 1201, a second side 1202, a third side 1203, and a fourth side 1204 connected end to end in sequence; an edge area of the array substrate 110 corresponding to the first side 1201 of the opposite substrate 120 forms a driving chip bonding area; the array substrate 110 extends beyond the opposite substrate 120 at least at four edge corners, i.e., corners 105.

The driver chip bonding area is a lower bezel area in the conventional technology, and the area is used for arranging an integrated driver circuit and is bonded with an external printed circuit board or a flexible circuit board.

Illustratively, the counter substrate 120 is rectangular in shape.

By disposing the array substrate 110 beyond the opposite substrate 120 at the four corners 105, the bending stress in the array substrate 110 can be concentrated in the edge corner region, so that the variation of the cell thickness of the display area 300 caused thereby can be reduced, and the four-corner light leakage can be improved.

Optionally, fig. 4 is a schematic plane structure diagram of another curved display panel provided in the embodiment of the present invention, and fig. 5 is a schematic plane structure diagram of another curved display panel provided in the embodiment of the present invention. Referring to fig. 4 or 5, edges of the array substrate 110 corresponding to the second side 1202, the third side 1203, and the fourth side 1204 of the opposite substrate 120 are all beyond the opposite substrate 120.

With this configuration, the area of the array substrate 110 beyond the opposite substrate 120 can be increased, and during the process of forming the curved display panel 10 by bending the display panel from a planar shape and after forming the curved display panel 10, the bending stress is concentrated along the borderline direction to four corners, i.e. the bending stress is concentrated in the area of the array substrate 110 beyond the opposite substrate 120, thereby facilitating the release of the bending stress from the display area to the non-display area. Since the area of the array substrate 110 beyond the counter substrate 120 is not used for displaying images, the bending stress is concentrated in the area, and the display effect of the curved display panel 10 is not affected. Meanwhile, the area of the array substrate 110 beyond the opposite substrate 120 can be fixedly connected with the protective cover plate 130, and the larger the area of the fixedly connected area of the array substrate 110 and the protective cover plate 130 is, the better the connection stability is; with the arrangement, the total area of the fixable connection area of the array substrate 110 and the protective cover plate 130 is increased, which is beneficial to enhancing the connection stability of the array substrate 110 and the protective cover plate 130, thereby being beneficial to maintaining the long-term stability of the curved display panel 10 and prolonging the service life thereof.

Alternatively, with continued reference to fig. 1, 4, or 5, a border of the edge of the array substrate 110 beyond the opposite substrate 120, which is far away from the opposite substrate 120, is parallel to a border of the opposite substrate 120; the boundary line of the opposite substrate 120 is the first side 1201, the second side 1202, the third side 1203, or the fourth side 1204 of the opposite substrate 120.

By such an arrangement, each side of the array substrate 110 can be a straight line, and the cutting line is a straight line, which is beneficial to reducing the cutting difficulty.

Alternatively, with continued reference to FIG. 1, FIG. 4, or FIG. 5, the width W1 of the array substrate 110 beyond the counter substrate 120 satisfies W1 ≧ 0.8 mm.

When the width W1 of the array substrate 110 exceeds the counter substrate 120 is small, the fixable area between the array substrate 110 and the protective cover 130 may be small, which may cause insufficient adhesion, and the array substrate 110 may be separated from the protective cover 130, which may cause the array substrate 110 to be unable to maintain a certain cell thickness with the counter substrate 120 via the protective cover 130, thereby causing the display light leakage problem again, and therefore, the width W1 needs to be greater than or equal to 0.8 mm.

Therefore, the setting W1 is larger than or equal to 0.8mm, the width of the array substrate 110 beyond the opposite substrate 120 is large enough, so that the array substrate 110 and the protective cover 130 are fixedly connected, and the connection stability is enhanced.

In other embodiments, the value range of W1 may also be W1 ≥ 0.85mm, W1 ≥ 0.9mm or other value ranges known to those skilled in the art, and the examples of the present invention are not limited thereto. In combination with the analysis of a specific application scene, when the curved display panel 10 is applied to large-size display or vehicle-mounted display, since the overall size of the curved display panel is large and the space in which the curved display panel 10 can be arranged in the vehicle-mounted display is large, the upper limit of the width W1 may not be set.

In other embodiments, an upper limit value may be set according to the actual requirement of the curved display panel 10, so that the size of the frame non-display area of the curved display panel 10 is not too large, so as to make the process control simpler and facilitate reducing the cost.

Optionally, with continued reference to fig. 4 or 5, edge regions of the array substrate 110 corresponding to the second and

fourth sides

1202 and 1204 of the opposite substrate 120, which extend beyond the opposite substrate 120, include peripheral wiring regions; the peripheral wiring region is provided with signal lines for supplying driving electric signals to the pixel units in the curved display panel 10 and peripheral circuits.

The pixel unit can be a display unit of a liquid crystal display panel and can comprise a pixel electrode, a common electrode and a liquid crystal layer; the peripheral circuit may include a scan driving circuit, a light emitting control driving circuit, and other circuits known to those skilled in the art, and the signal lines include a scan driving line, a reference signal bus, and other display control related signal lines known to those skilled in the art.

With such an arrangement, the left/right edge regions of the array substrate 110 beyond the counter substrate 120 can be used for wiring, so that the wiring area is increased while the number of the wirings is not changed, thereby being beneficial to increasing the distance between adjacent lines and reducing the possibility of short circuit between adjacent signal lines; meanwhile, the mutual influence between the signal lines is reduced, and the image display effect of the curved display panel 10 is improved.

Alternatively, the curved display panel may be curved in such a manner that at least one edge is bent in a direction away from the flat display panel, or at least one corner of the curved display panel is bent in a direction away from the flat display panel. Thus, curved surface display is realized.

For example, referring to fig. 6, a hard bonding (bonding a hard structure directly) technique is used, the protective cover 130 has a curvature, and when the array substrate and the opposite substrate (110 +120 in the figure) are bonded to the protective cover, two opposite sides of the array substrate and the opposite substrate are forced to bend upwards and are fixed to the protective cover by the first adhesive layer and the second adhesive layer, respectively, so as to form the curved display panel 10.

In other embodiments, the flat display panel may be bent to form the curved display panel 10 by a method of bending and hard-fitting the back panel, that is, providing a back panel with a preset curvature, and fitting the flat display panel to the back panel to form the curved display panel 10. Alternatively, the curved display panel 10 may be formed in other ways known to those skilled in the art, and the embodiment of the invention is not limited thereto.

For example, referring to fig. 7, the curved display panel 10 may also be a four-corner warped display panel. By gluing and fixing the array substrate and the color film substrate with the folded protective cover plate, the box thickness change caused by the stress of the array substrate for recovering the plane shape can be reduced, and the light leakage can be improved.

On the basis of the foregoing embodiments, an embodiment of the present invention further provides a curved display device including any one of the curved display panels provided in the foregoing embodiments. Therefore, the curved display device also has the technical effects of the curved display panel provided by the above embodiments, and the same points can be understood with reference to the above description, and are not described in detail below.

For example, referring to fig. 8, the curved display device 50 includes a curved display panel 10, and may further include a backlight module 510, where the backlight module 510 is disposed on the light incident side of the display panel 10 and is used for providing backlight for the display panel 10. In other embodiments, the curved display device may further include a touch module disposed on a side of the opposite substrate away from the array substrate, and the touch module is configured to implement human-computer interaction. Alternatively, the touch module may be embedded in the array substrate, which is not limited in the embodiment of the present invention.

The curved display device 50 may also include other film structures known to those skilled in the art, and the embodiment of the invention is not repeated and limited herein.

The curved display device 50 provided in the embodiment of the present invention may be a mobile phone, a curved computer, an intelligent wearable device, a vehicle-mounted display device, or other types of devices or devices with display functions known to those skilled in the art, which is not limited in the embodiment of the present invention.

It should be noted that "up", "down", "left", and "right" in this document are all based on the orientations shown in the drawings, and an exemplary description of the curved display panel 10 provided in the embodiment of the present invention is not limited to the curved display panel 10 provided in the embodiment of the present invention.

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.

Claims

1. A curved display panel, comprising: the array substrate and the opposite substrate are oppositely arranged, and the protective cover plate is arranged on one side, away from the array substrate, of the opposite substrate; the liquid crystal layer is arranged in a liquid crystal box formed by sealing the array substrate and the opposite substrate;

wherein a perpendicular projection of the counter substrate on the array substrate is within the array substrate; the opposite substrate comprises a plurality of edges which are sequentially connected end to end, the connecting position of the two connected edges forms a corner, at least part of the corner, the edge of the array substrate exceeds the opposite substrate, and the edge area of the array substrate exceeding the opposite substrate is fixedly connected with the protective cover plate;

at least one edge of the curved surface display panel bends towards the direction departing from the plane display panel, or at least one corner of the curved surface display panel bends towards the direction departing from the plane display panel.

2. The curved display panel of claim 1, further comprising a first adhesive layer and a second adhesive layer;

the edge area of the array substrate beyond the opposite substrate is bonded with the protective cover plate through the first adhesive layer;

and one side surface of the opposite substrate close to the protective cover plate is bonded with one side surface of the protective cover plate close to the opposite substrate through the second adhesive layer.

3. The curved display panel of claim 2, wherein a gap W0 between the first adhesive layer and the second adhesive layer satisfies: w0 is more than or equal to 0mm and less than or equal to 0.3 mm.

4. The curved display panel of claim 2, wherein the material of the first adhesive layer and the second adhesive layer comprises an optical adhesive or a pressure sensitive adhesive.

5. The curved display panel of claim 1, wherein the planar shape of the curved display panel is a quadrilateral, and the opposite substrate comprises a first side, a second side, a third side and a fourth side which are connected end to end in sequence; a driving chip bonding area is formed in the edge area of the array substrate corresponding to the first edge of the opposite substrate; the array substrate exceeds the opposite substrate at least at four edge top corners.

6. The curved display panel of claim 5, wherein the edges of the array substrate corresponding to the second, third and fourth edges of the opposite substrate extend beyond the opposite substrate.

7. The curved display panel according to claim 5 or 6, wherein a side line of the array substrate beyond the edge of the opposite substrate, the side line being far away from the opposite substrate, is parallel to a side line of the opposite substrate;

the side line of the opposite substrate is a first side, a second side, a third side or a fourth side of the opposite substrate.

8. The curved display panel of claim 7, wherein the width W1 of the array substrate beyond the opposite substrate satisfies W1 ≧ 0.8 mm.

9. The curved display panel according to claim 6, wherein the edge regions of the array substrate corresponding to the second and fourth sides of the opposite substrate beyond the opposite substrate include a peripheral wiring region;

and the peripheral wiring area is provided with signal lines and peripheral circuits for providing driving electric signals for the pixel units in the curved surface display panel.

10. A curved display device comprising the curved display panel according to any one of claims 1 to 9.