CN112447110B

CN112447110B - Display device

Info

Publication number: CN112447110B
Application number: CN202011380918.5A
Authority: CN
Inventors: 杨俊�; 黎胜明; 陈江; 许琴
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2022-04-22
Anticipated expiration: 2040-11-30
Also published as: CN112447110A

Abstract

The invention provides a display device, which comprises a flexible display panel and a cover plate, wherein the cover plate is positioned on the light-emitting display side of the flexible display panel; the flexible display panel comprises a display area and a non-display area; the flexible display panel comprises a straight panel and a plurality of peripheral panels, wherein the peripheral panels are positioned at the edges of the straight panel and are integrally formed with the straight panel; the two adjacent peripheral panels form a curved surface splicing area at the splicing position, and the curved surface splicing area is positioned in the non-display area; the cover plate comprises a straight cover plate part and a plurality of peripheral cover plate parts, wherein the peripheral cover plate parts are positioned at the edge of the straight cover plate part and are integrally formed with the straight cover plate part; the straight cover plate part is jointed with the straight panel, and the peripheral cover plate part is jointed with the peripheral panel; the display device further comprises at least one light refracting component that reuses at least part of the peripheral cover plate portion, overlaps the curved surface splicing area, and is used to visually conceal the curved surface splicing area. The invention enables the non-luminous curved surface splicing area to be hidden and invisible to human eyes, thereby improving the display effect of the display device.

Description

Display device

Technical Field

The invention relates to the technical field of display, in particular to a display device.

Background

With the rapid development of display technology, no matter the size or the display quality of a display screen, breakthrough progress is made. As an important development direction of display technology, flexible display devices are attracting attention due to their thinness and flexibility.

In the prior art, a flexible display panel is usually bent and packaged in a sealed space formed by a substrate and a cover plate to form a display device. In order to meet the curved shape of the flexible display panel, the cover plate is also curved so as to be attached to the curved flexible display panel. However, after the flexible display panel is bent and spliced, a splicing gap appears, and the splicing gap is a non-luminous area, so that the display effect is affected.

Disclosure of Invention

The invention provides a display device, so that a non-luminous curved surface splicing area is hidden and not visible to human eyes, and the display effect of the display device is improved.

The embodiment of the invention provides a display device, which comprises a flexible display panel and a cover plate, wherein the cover plate is positioned on the light-emitting display side of the flexible display panel; the flexible display panel comprises a display area and a non-display area;

the flexible display panel comprises a straight panel and a plurality of peripheral panels, wherein the peripheral panels are positioned at the edge of the straight panel and are integrally formed with the straight panel; the peripheral panel is bent around the junction of the peripheral panel and the straight panel to form a curved screen with a plurality of side faces, a curved splicing area is formed at the splicing position of two adjacent peripheral panels, and the curved splicing area is positioned in the non-display area;

the cover plate comprises a straight cover plate part and a plurality of peripheral cover plate parts, and the peripheral cover plate parts are positioned at the edge of the straight cover plate part and are integrally formed with the straight cover plate part; the straight cover plate part is attached to the straight panel, and the peripheral cover plate part is attached to the peripheral panel;

the display device further comprises at least one light refraction component, wherein the light refraction component multiplexes at least part of the peripheral cover plate part, overlaps with the curved surface splicing area, and is used for hiding the curved surface splicing area visually.

In the display device provided by the embodiment of the invention, the straight panel of the flexible display panel and the straight cover plate part of the cover plate are positioned on the front surface of the display device, and the peripheral panel of the flexible display panel and the peripheral cover plate part of the cover plate are positioned on the side surface of the display device. Two adjacent peripheral panels form a curved surface splicing area at the splicing position, and at least part of the peripheral cover plate part is reused to form the light refraction component, so that extra space and extra processes are not required to be specially arranged for the light refraction component. The light refraction part is located the top of curved surface splice area, and the material that can adopt to form the apron for example forms the light refraction part in two adjacent peripheral apron portion boundary position departments to the light refraction part can be with the light of peripheral panel outgoing, throws to the people's eye after the refraction through the light refraction part, makes non-luminous curved surface splice area hidden, and is not visible by the people's eye, has improved display device's display effect.

Drawings

Fig. 1 is a schematic perspective view of a display device according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the display device shown in FIG. 1;

FIG. 3 is an enlarged schematic view of the area S1 in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along AA' in FIG. 2;

FIG. 5 is a schematic cross-sectional view taken along line BB' in FIG. 2;

fig. 6 is a schematic cross-sectional view illustrating another display device according to an embodiment of the invention;

fig. 7 is a schematic top view illustrating another display device according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view taken along line CC' of FIG. 7;

fig. 9 is a schematic top view illustrating another display device according to an embodiment of the present invention;

fig. 10 is a schematic top view illustrating another display device according to an embodiment of the present invention;

fig. 11 is a schematic perspective view of another display device according to an embodiment of the invention;

FIG. 12 is a schematic top view of the display device shown in FIG. 11;

FIG. 13 is a schematic cross-sectional view taken along line DD' of FIG. 12;

fig. 14 is a schematic cross-sectional structure view of another display device according to an embodiment of the 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 of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic perspective view illustrating a display device according to an embodiment of the present invention, fig. 2 is a schematic top view illustrating the display device shown in fig. 1, fig. 3 is an enlarged schematic view illustrating a region S1 in fig. 2, and fig. 4 is a schematic cross-sectional view along AA' in fig. 2, and referring to fig. 1 to fig. 4, the display device includes a flexible display panel 10 and a cover plate 20. The cover plate 20 is located at the light emitting display side of the flexible display panel 10. The cover plate 20 is located on one surface of the flexible display panel 10 facing the light emitting side of the display device. The flexible display panel 10 includes a display region 101 and a non-display region 102. The flexible display panel 10 includes a straight panel 11 and a plurality of peripheral panels 12, the peripheral panels 12 being located at edges of the straight panel 11, the peripheral panels 12 being integrally formed with the straight panel 11. That is, before the flexible display panel 10 is bent, the peripheral panel 12 and the straight panel 11 are different portions of the same display panel. After the flexible display panel 10 is bent, the peripheral panel 12 is bent around the boundary between the peripheral panel 12 and the straight panel 11 to form a curved screen with multiple side surfaces (a quad-curved screen is taken as an example in fig. 1 for explanation, but not limited thereto), two adjacent peripheral panels 12 form a curved splicing area 30 at the splicing position, and the curved splicing area 30 is located in the non-display area 102. The curved splicing zone 30 is a curved surface with a radian. The cover 20 includes a straight cover portion 21 and a plurality of peripheral cover portions 22, the peripheral cover portions 22 being located at edges of the straight cover portion 21, the peripheral cover portions 22 being integrally formed with the straight cover portion 21. The straight cover plate portion 21 corresponds to the straight panel 11, the straight cover plate portion 21 is attached to the straight panel 11, the peripheral cover plate portions 22 correspond to the peripheral panels 12 one by one, and the peripheral cover plate portions 22 are attached to the peripheral panels 12. The peripheral cover plate portion 22 is bent around the boundary between the peripheral cover plate portion 22 and the straight cover plate portion 21, and the bending direction is a direction in which the peripheral cover plate portion 22 is away from the light emitting side of the display device. The display device further comprises at least one light refracting component 40, the light refracting component 40 multiplexing at least part of the peripheral cover plate portion 22, the light refracting component 40 overlapping the curved surface splicing area 30 for visually hiding the curved surface splicing area 30.

In the display device provided by the embodiment of the invention, the straight panel 11 of the flexible display panel 10 and the straight cover plate part 21 of the cover plate 20 are positioned at the front of the display device, and the peripheral panel 12 of the flexible display panel 10 and the peripheral cover plate part 22 of the cover plate 20 are positioned at the side of the display device. Two adjacent peripheral panels 12 form a curved splicing area 30 at the splice, and at least part of the peripheral cover plate portion 22 is reused to form the light refracting component 40, so that no extra space and no extra process are required to be specially provided for the light refracting component 40. The light refraction component 40 is located above the curved surface splicing area 30, for example, the material forming the cover plate 20 can be adopted to form the light refraction component 40 at the junction position of the two adjacent peripheral cover plate parts 22, so that the light refraction component 40 can project the light emitted by the peripheral panel 12 to human eyes after the light refraction component 40 is refracted, the non-luminous curved surface splicing area 30 is hidden and not visible to human eyes, and the display effect of the display device is improved. It should be noted that the curved surface splicing area 30 is a curved surface area formed by overlapping different peripheral panels 12 of the same flexible display panel 10, and correspondingly, the light refracting component 40 is a light deflecting component formed at the interface of different peripheral cover plate portions 22 of the same cover plate 20.

Alternatively, referring to fig. 2 and 3, the plurality of peripheral panels 12 includes adjacent first and second

peripheral panels

121 and 122. The light refracting part 40 includes at least two convex lenses including a first convex lens 41 and a second convex lens 42. The display area 101 in the first peripheral panel 121 and the curved surface splicing area 30 (illustrated by a bold line in fig. 3) are overlapped with the first convex lens 41, the first convex lens 41 covers a part of the display area 101 in the first peripheral panel 121, and the first convex lens 41 also covers a part of the area in the curved surface splicing area 30. The display area 101 in the second peripheral panel 122 and the curved surface splicing area 30 are overlapped with the second convex lens 42, the second convex lens 42 covers part of the display area 101 in the second peripheral panel 122, the second convex lens 42 also covers part of the area in the curved surface splicing area 30, and the first convex lens 41 is not overlapped with the second convex lens 42. In the embodiment of the present invention, the light refracting part 40 includes the first convex lens 41 and the second convex lens 42, and both the first convex lens 41 and the second convex lens 42 have a magnifying function, so that the first convex lens 41 magnifies the display area 101 in the first peripheral panel 121 covered by the first convex lens 41, and the second convex lens 42 magnifies the display area 101 in the second peripheral panel 122 covered by the second convex lens 42, so that the first convex lens 41 and the second convex lens 42 magnify the visible range of the display area 101, and the non-luminous curved splicing area 30 is hidden from the human eye in terms of vision.

Illustratively, referring to fig. 3, the curved surface splicing region 30 is outside the display region 101, i.e. the range of the region where the curved surface splicing region 30 is located is equal to the range of the non-display region 102. In other embodiments, the area outside the area of the curved surface splicing region 30 may also have the non-display region 102, i.e., the area of the curved surface splicing region 30 is smaller than the area of the non-display region 102.

Exemplarily, referring to fig. 2 and 4, in an area outside the curved surface splicing region 30, i.e., the display region 101 of the peripheral panel 12, the peripheral cover plate portion 22 is bent toward the flexible display panel 10. In the area of the curved splicing region 30, the thickness of the peripheral cover plate portion 22 varies in a concave-convex manner, and at least two convex lenses are formed, and the thickness variation of the peripheral cover plate portion 22 will be described in detail later. Illustratively, the thickness of any position in the peripheral cover plate portion 22 is the same as the thickness of the straight cover plate portion 21. In other embodiments, the peripheral cover plate portion 22 may also have a different thickness than the straight cover plate portion 21.

Alternatively, referring to FIG. 3, the curved surface splicing zone 30 has a first width b1 at the first position, and the curved surface splicing zone 30 has a second width b2 at the second position, where b1 is not equal to b 2. The curved surface splicing area 30 is a curved surface, and the curved surface splicing area 30 has different widths at different positions along the extending direction of the curved surface splicing area 30. The extending direction of the curved splicing region 30 is from the boundary of the straight panel 11 and the peripheral panel 12 to the side of the peripheral panel 12 far away from the straight panel 11. The width of the curved surface splicing area 30 can be the sum of the distance from the edge of the curved surface splicing area 30 adjacent to the first peripheral panel 121 to the center line of the curved surface splicing area 30 (as shown by the dotted line in fig. 3) and the distance from the edge of the curved surface splicing area 30 adjacent to the second peripheral panel 122 to the center line of the curved surface splicing area 30. As shown in FIG. 3, in the first position, the distance from one edge of the curved surface splicing region 30 adjacent to the first peripheral panel 121 to the centerline of the curved surface splicing region 30 is b1/2, the distance from one edge of the curved surface splicing region 30 adjacent to the second peripheral panel 122 to the centerline of the curved surface splicing region 30 is b1/2, and the curved surface splicing region 30 has a first width b 1. Because the flexible display panel 10 in the embodiment of the present invention is a curved screen having a plurality of sides, along the extending direction of the curved splicing region 30, the curved splicing region 30 has different widths at different positions, the width of the curved splicing region 30 changes, and the overlapping length of the convex lens and the curved splicing region 30 also changes. In order to adapt to the width change of the curved surface splicing area 30 at different positions, the light rays emitted from different positions of the curved surface splicing area 30 to human eyes can be more uniform through the overlapping length of the convex lens and the display area 101 in the peripheral panel 12, the magnification of the convex lens and the like, so that the display effect is improved.

Alternatively, referring to fig. 3, in the first position, the overlapping length of the convex lens (the second convex lens 42 is taken as an example in fig. 3 for explanation, but not limited thereto, the convex lens may also be the first convex lens 41, for example) and the display area 101 in the peripheral panel 12 is a1, and the magnification of the convex lens is k 1. At the second position, the overlapping length of the convex lens and the display area 101 in the peripheral panel 12 is a2, the magnification of the convex lens is k2, and the following conditions are satisfied: a1 × k1 is a1+ b1/2, and a2 × k2 is a2+ b 2/2. It can be seen that in the first position, the convex lens enlarges the overlapping length a1 with the display area 101 in the peripheral panel 12 by a factor of k1, and becomes a1+ b1/2 visually. Thus, in the first position, a single convex lens may hide half of the first width b1, and two convex lenses (the first convex lens 41 and the second convex lens 42) may hide the entirety of the first width b1, i.e., the curved stitching region 30 having the first width b 1. Similarly, in the second position, after the convex lens magnifies the overlapping length a2 of the convex lens with the display area 101 in the peripheral panel 12 by k2 times, the convex lens becomes a2+ b2/2 visually, so that in the second position, a single convex lens can hide half of the second width b2, and two convex lenses (the first convex lens 41 and the second convex lens 42) can hide the whole of the second width b2, that is, the curved splicing area 30 with the second width b2 is hidden. In summary, with the above design, the convex lens can enlarge the display area 101 and hide the curved splicing area 30.

Alternatively, in one embodiment, a1 ═ a2 may be provided. That is, the overlapping length a1 of the convex lens with the display area 101 in the peripheral panel 12 at the first position is equal to the overlapping length a2 of the convex lens with the display area 101 in the peripheral panel 12 at the second position. In the embodiment of the present invention, along the extending direction of the curved splicing region 30, the convex lenses may be arranged at the same overlapping length as the display region 101 in the peripheral panel 12 at each position, so as to reduce the design difficulty of the convex lenses.

Alternatively, in another embodiment, k1 ═ k2 may be provided. That is, the magnification k1 of the convex lens at the first position is equal to the magnification k2 of the convex lens at the second position. In the embodiment of the present invention, the convex lenses may be arranged at the same magnification at different positions along the extending direction of the curved splicing region 30, so as to reduce the difficulty in designing the convex lenses.

Fig. 5 is a schematic cross-sectional view along BB' in fig. 2, and referring to fig. 2 and 5, a side adjacent to the flexible display panel 10 is an inner side, and a side away from the flexible display panel 10 is an outer side. The first convex lens 41 and the second convex lens 42 are both convex on the outer surface of the cover plate 20. That is, for the outer side surface of the cover 20 on the side away from the flexible display panel 10, the first convex lens 41 and the second convex lens 42 are convex on the outer side surface of the cover 20 toward the side away from the flexible display panel 10. In the embodiment of the present invention, the first convex lens 41 and the second convex lens 42 are both protruded on the outer surface of the cover plate 20, and the surfaces of the first convex lens 41 and the second convex lens 42 on the inner side of the cover plate 20 are relatively smooth, so that the flexible display panel 10 is not damaged.

Fig. 6 is a schematic cross-sectional structure view of another display device according to an embodiment of the present invention, and referring to fig. 6, a side adjacent to the flexible display panel 10 is an inner side, and a side away from the flexible display panel 10 is an outer side. The first convex lens 41 and the second convex lens 42 are both convex on the surface of the inner side of the cover plate 20. That is, for the inner side surface of the cover 20 adjacent to the flexible display panel 10, the first convex lens 41 and the second convex lens 42 are convex toward the flexible display panel 10 at the inner side surface of the cover 20. In the embodiment of the present invention, the first convex lens 41 and the second convex lens 42 are both protruded on the inner surface of the cover plate 20, and the outer surfaces of the first convex lens 41 and the second convex lens 42 on the outer side of the cover plate 20 are relatively smooth, so that unevenness is not caused on the outer surface of the cover plate 20, and therefore, the aesthetic property of the display device is improved, and the experience of a user touching the cover plate 20 is improved.

Fig. 7 is a schematic top view of another display device according to an embodiment of the present invention, and fig. 8 is a schematic cross-sectional view taken along CC' in fig. 7, and referring to fig. 7 and 8, the light refraction component 40 further includes a concave lens 44, the concave lens 44 is located between the first convex lens 41 and the second convex lens 42, and the concave lens 44 overlaps the curved splicing region 30. The concave lens 44 has a reducing function, so that the concave lens 44 reduces the curved surface splicing area 30 covered by the concave lens 44, therefore, on the basis that the first convex lens 41 and the second convex lens 42 enlarge the visible range of the display area 101, the concave lens 44 reduces the visible range of the curved surface splicing area 30, the first convex lens 41 and the second convex lens 42 cooperate with the concave lens 44, and visually, the non-luminous curved surface splicing area 30 is further hidden and is not visible to human eyes.

Optionally, referring to fig. 7 and 8, the light refracting part 40 further includes a concave lens 44, the concave lens 44 is located between the first convex lens 41 and the second convex lens 42, and the concave lens 44 overlaps the curved splicing region 30. When the first convex lens 41 and the second convex lens 42 are both convex on the outer surface of the cover plate 20, the concave lens 44 is concave on the outer surface of the cover plate 20. For the outer side surface of the cover plate 20 on the side away from the flexible display panel 10, the first convex lens 41 and the second convex lens 42 are convex on the outer side surface of the cover plate 20 toward the side away from the flexible display panel 10, and the concave lens 44 is convex on the outer side surface of the cover plate 20 toward the side of the flexible display panel 10. In the embodiment of the present invention, the first convex lens 41, the second convex lens 42, and the concave lens 44 are formed on the outer surface of the cover plate 20, and compared with the case where the first convex lens 41, the second convex lens 42, and the concave lens 44 are formed on the outer surface and the inner surface of the cover plate 20, respectively, unevenness is generated only on the outer surface of the cover plate 20, and the inner surface of the cover plate 20 is relatively smooth.

Alternatively, in other embodiments, when the first convex lens 41 and the second convex lens 42 are both convex on the surface inside the cover plate 20, the concave lens 44 is concave on the surface inside the cover plate 20. The first convex lens 41, the second convex lens 42, and the concave lens 44 are formed on the inner side surface of the cover plate 20, and the unevenness is generated only on the inner side surface of the cover plate 20 and the outer side surface of the cover plate 20 is relatively smooth, compared to the case where the first convex lens 41, the second convex lens 42, and the concave lens 44 are formed on the outer side surface and the inner side surface of the cover plate 20, respectively.

Fig. 9 is a schematic top view of another display device according to an embodiment of the present invention, and referring to fig. 9, the light refraction component 40 further includes a third convex lens 43, and the first convex lens 41, the second convex lens 42, and the third convex lens 43 surround and form a triangular region or a triangle-like region. A triangle-like region refers to a region having a shape close to a triangle, for example, a region in which the vertex angle of the triangle region is changed to a circular arc angle, and/or a region in which at least one edge of the triangle region is changed to a curved edge. The third convex lens 43 overlaps the curved splicing region 30. The closer the curved surface splicing area 30 is to the straight panel 11, the smaller the width of the curved surface splicing area 30 is; the farther the curved surface splicing area 30 is from the straight panel 11, the larger the width of the curved surface splicing area 30 is. The curved surface splicing area 30 is a triangle-like area, and in the embodiment of the present invention, one convex lens is disposed at each edge of the triangle-like area (i.e., three convex lenses, i.e., a first convex lens 41, a second convex lens 42, and a third convex lens 43, are disposed at three edges of the curved surface splicing area 30, respectively). On one hand, the convex lenses with the corresponding number are arranged according to the shape of the curved surface splicing area 30, so that the arrangement difficulty of the convex lenses can be reduced; on the other hand, the first convex lens 41, the second convex lens 42 and the third convex lens 43 cooperate to visually hide the non-luminous curved surface splicing region 30 from being visible to the human eye.

Fig. 10 is a schematic top view of another display device according to an embodiment of the present invention, and referring to fig. 10, the light refracting part 40 further includes a concave lens 44, the concave lens 44 is located between the first convex lens 41 and the second convex lens 42, and the concave lens 44 overlaps the curved splicing region 30. The concave lens 44 is located between the first convex lens 41 and the third convex lens 43, and the concave lens 44 is also located between the second convex lens 42 and the third convex lens 43, so that the concave lens 44 is located in a triangular region or a triangle-like region surrounded by the first convex lens 41, the second convex lens 42 and the third convex lens 43. In the embodiment of the present invention, the first convex lens 41, the second convex lens 42 and the third convex lens 43 cooperate with the concave lens 44, and the non-luminous curved splicing region 30 is further hidden from the human eye.

Illustratively, referring to FIGS. 3, 9 and 10, the curved surface splice 30 has a first width b1 at a first location and the curved surface splice 30 has a second width b2 at a second location, b1 being unequal to b 2. In the first position, the overlap length of the convex lens with the display area 101 in the peripheral panel 12 is a1, and the magnification of the convex lens is k 1. In the second position, the overlap length of the convex lens with the display area 101 in the peripheral panel 12 is a2, and the magnification of the convex lens is k 2. The light refracting part 40 includes three convex lenses, a first convex lens 41, a second convex lens 42, and a third convex lens 43. Satisfies the following conditions: a1 × k1 is a1+ b1/3, and a2 × k2 is a2+ b 2/3. Therefore, in the first position, a single convex lens can hide one third of the first width b1, and three convex lenses (the first convex lens 41, the second convex lens 42, and the third convex lens 43) can hide the whole of the first width b1, and in the second position, the positions are similar to the first position, and are not described again. In summary, the first convex lens 41, the second convex lens 42 and the third convex lens 43 cooperate to visually conceal the curved splicing region 30.

Fig. 11 is a schematic perspective view illustrating another display device according to an embodiment of the present invention, fig. 12 is a schematic top view illustrating the display device shown in fig. 11, fig. 13 is a schematic cross-sectional view taken along DD' of fig. 12, and referring to fig. 11-13, the light refracting part 40 includes a groove 50 formed in the peripheral cover portion 22. The groove 50 overlaps the curved splicing region 30. In the embodiment of the present invention, the light refracting part 40 includes a groove 50 formed in the peripheral cover plate 22, the light emitted from the peripheral panel 12 is refracted by the side wall 51 and enters the groove 50, and is reflected back and forth between the two side walls 51 of the groove 50 for multiple times and then exits to the outside of the display device, and visually, the non-luminous curved splicing region 30 is hidden and thus is not visible to human eyes.

Alternatively, referring to fig. 11-13, the groove 50 has a depth H, which refers to the depth of the groove 50 along the thickness of the cover plate 20, i.e., the depth is the distance from the top of the groove 50 to the bottom of the groove 50 along the normal to the plane of the point. The overlapping length of the groove 50 and the curved surface splicing region 30 is c, that is, the length of the overlapping portion of the groove 50 and the curved surface splicing region 30 along the extending direction of the curved surface splicing region 30 is c. The incident angle when the light emitted from the flexible display panel 10 is projected to the sidewall 51 of the groove 50 is θ, which satisfies: h is n × c × tan θ. Wherein n is the number of times that the light emitted by the flexible display panel 10 is reflected on the side wall 51 of the groove 50, n is greater than or equal to 10, and the side wall 51 of the groove 50 intersects with the surface of the peripheral cover plate part 22. In the embodiment of the present invention, the groove depth of the groove 50 and the overlapping length of the groove 50 and the curved surface splicing region 30 are designed according to the formula H ═ n × c × tan θ, so that the non-luminous curved surface splicing region 30 is further hidden from the human eye in terms of vision.

Illustratively, referring to fig. 11-13, the groove 50 completely covers the curved splicing region 30, and the groove 50 also covers a portion of the display region 101 in the first peripheral panel 121 and a portion of the display region 101 in the second peripheral panel 122. That is, the groove 50 overlaps the display area 101 in the first peripheral panel 121, the display area 101 in the second peripheral panel 122, and the curved surface splicing area 30. In other embodiments, the groove 50 may also overlap the curved splicing region 30, not the display region 101 in the first peripheral panel 121 and the display region 101 in the second peripheral panel 122.

Exemplarily, referring to fig. 12, in a direction perpendicular to the straight cover plate portion 21, the groove 50 is a U-shaped groove, and a U-shaped opening of the U-shaped groove faces the straight cover plate portion 21. In other embodiments, the groove 50 may also have other shapes, such as rectangular, oval, etc., in a direction perpendicular to the straight cover plate portion 21.

Illustratively, referring to fig. 13, the side walls 51 of the groove 50 are perpendicular to the surface of the peripheral cover plate portion 22. In other embodiments, the side wall 51 of the groove 50 may also be formed as a slope with a certain slope, and the included angle between the side wall 51 of the groove 50 and the surface of the peripheral cover plate portion 22 is greater than 0 ° and less than 90 °.

Exemplarily, referring to fig. 13, the groove 50 penetrates the cap plate 20 in a direction perpendicular to the straight cap plate portion 21, and the groove 50 has a groove depth equal to the thickness of the cap plate 20. In other embodiments, the groove 50 may also be formed through the cover plate 20, and the groove 50 may have a depth smaller than the thickness of the cover plate 20.

Fig. 14 is a schematic cross-sectional view of another display device according to an embodiment of the present invention, and referring to fig. 14, the light refracting part 40 further includes a highly reflective film 52, the highly reflective film 52 is disposed on a sidewall 51 of the recess 50, and the sidewall 51 of the recess 50 intersects with a surface of the peripheral cover plate portion 22. In the embodiment of the present invention, the light refracting part 40 further includes a high reflective film 52, and the high reflective film 52 is used to increase the reflectivity of the light on the sidewall 51 of the groove 50, so as to reduce the number of times the light is reflected in the groove 50, in other words, the light is easier to exit out of the groove 50, and the non-luminous curved splicing region 30 is easier to be hidden and thus is not visible to human eyes.

Optionally, referring to fig. 14, the light refracting part 40 further includes a filling medium 53, the filling medium 53 is located in the groove 50, and the refractive index of the filling medium 53 is different from that of the cover plate 20. In the embodiment of the present invention, the filling medium 53 is disposed in the groove 50, and the filling medium 53 seals the groove 50, so that dust and the like are prevented from entering between the cover plate 20 and the flexible display panel 10 through the groove 50. The refractive index of the filling medium 53 is different from that of the cover plate 20, so that the light emitted from the peripheral panel 12 is refracted by the sidewalls 51, enters the groove 50, and exits to the outside of the display device after being reflected back and forth between the two sidewalls 51 of the groove 50 for multiple times, and the non-luminous curved splicing region 30 is hidden from the human eye in view.

Alternatively, referring to fig. 1 and 11, the flexible display panel 10 includes a straight panel 11 and 4 peripheral panels 12, the straight panel 11 being located at the top surface of the display device, and the 4 peripheral panels 12 being located at the 4 side surfaces of the display device. The cover 20 includes a straight cover portion 21 and 4 peripheral cover portions 22, the straight cover portion 21 being located on the top surface of the display device, and the 4 peripheral cover portions 22 being located on the 4 side surfaces of the display device. The cover plate 20 is located at the outer side of the flexible display panel 10, and the cover plate 20 semi-surrounds the flexible display panel 10. The top surfaces of the display devices are connected uniformly by 4 side surfaces of the display devices, and the top surfaces of the display devices are luminous display surfaces of the display devices. The display device provided by the embodiment of the invention comprises a quadric-curved screen, and 4 peripheral panels 12 of a flexible display panel 10 are bent. In other embodiments, 3 sides or at least 5 peripheral panels 12 of the flexible display panel 10 may be bent, which is not limited in the embodiment of the present invention.

Exemplarily, referring to fig. 1 and 2, the plurality of peripheral panels 12 includes a first peripheral panel 121 and a second peripheral panel 122 adjacent to each other, the plurality of peripheral panels 12 further includes a third peripheral panel 123 and a fourth peripheral panel 124 adjacent to each other, the first peripheral panel 121 is opposite to the third peripheral panel 123, the second peripheral panel 122 is opposite to the fourth peripheral panel 124, and the first peripheral panel 121 is adjacent to the fourth peripheral panel 124. In the embodiment of the present invention, two adjacent peripheral panels 12 are overlapped to form a curved surface splicing region 30, which collectively forms 4 curved surface splicing regions 30, and correspondingly, 4 light refraction components 40 may be disposed, and one light refraction component 40 is disposed in each curved surface splicing region 30.

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 modifications, rearrangements, combinations 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 display device comprising a flexible display panel and a cover plate, the cover plate being located on a light emitting display side of the flexible display panel; the flexible display panel comprises a display area and a non-display area;

the display device further comprises at least one light refraction component, wherein the light refraction component multiplexes at least part of the peripheral cover plate part, overlaps the curved surface splicing area, and is used for visually hiding the curved surface splicing area;

the plurality of peripheral panels comprises adjacent first and second peripheral panels;

the light ray refraction component comprises at least two convex lenses, and the at least two convex lenses comprise a first convex lens and a second convex lens; the display area in the first peripheral panel and the curved surface splicing area are overlapped with the first convex lens, and the display area in the second peripheral panel and the curved surface splicing area are overlapped with the second convex lens;

or,

the light refraction component comprises a groove arranged on the peripheral cover plate part; the groove depth of the groove is H, the overlapping length of the groove and the curved surface splicing area is c, the incident angle of the light rays emitted by the flexible display panel when the light rays are projected to the side wall of the groove is theta, and the requirements are met:

H＝n×c×tanθ；

and n is the number of times of reflection of the light rays emitted by the flexible display panel on the side wall of the groove, n is more than or equal to 10, and the side wall of the groove is crossed with the surface of the peripheral cover plate part.

2. The display device according to claim 1, wherein the light refracting part further comprises a concave lens, the concave lens being located between the first convex lens and the second convex lens, overlapping the curved splicing region.

3. The display device according to claim 1, wherein a side adjacent to the flexible display panel is an inner side and a side facing away from the flexible display panel is an outer side;

the first convex lens and the second convex lens are arranged on the surface of the outer side of the cover plate in a protruding mode.

4. The display device according to claim 1, wherein a side adjacent to the flexible display panel is an inner side and a side facing away from the flexible display panel is an outer side;

the first convex lens and the second convex lens are both arranged on the surface of the inner side of the cover plate in a protruding mode.

5. The display device according to claim 2 or 3, wherein the light refraction component further comprises a concave lens, the concave lens is positioned between the first convex lens and the second convex lens and is overlapped with the curved splicing region;

when the first convex lens and the second convex lens are convex on the surface of the outer side of the cover plate, the surface of the concave lens on the outer side of the cover plate is concave;

when the first convex lens and the second convex lens are convex on the surface of the inner side of the cover plate, the concave lens is concave on the surface of the inner side of the cover plate.

6. The display device according to claim 1, wherein the light refracting part further comprises a third convex lens, and the first convex lens, the second convex lens and the third convex lens surround a triangular region or a triangle-like region; the third convex lens is overlapped with the curved surface splicing area.

7. The display device according to claim 1, wherein the curved splicing region has a first width b1 at a first position and a second width b2 at a second position, wherein b1 is not equal to b 2;

at the first position, the overlapping length of the convex lens and the display area in the peripheral panel is a1, and the magnification of the convex lens is k 1; at the second position, the overlapping length of the convex lens and the display area in the peripheral panel is a2, and the magnification of the convex lens is k 2; satisfies the following conditions:

a1×k1＝a1+b1/2，a2×k2＝a2+b2/2，a1＝a2。

8. the display device according to claim 1, wherein the curved splicing region has a first width b1 at a first position and a second width b2 at a second position, wherein b1 is not equal to b 2;

a1×k1＝a1+b1/2，a2×k2＝a2+b2/2，k1＝k2。

9. the display device according to claim 1, wherein the light refracting member further comprises a highly reflective film on a side wall of the groove intersecting with a surface of the peripheral cover plate portion.

10. The display device according to claim 1, wherein the light refracting part further comprises a filling medium located in the groove, the filling medium having a refractive index different from that of the cover plate.

11. The display device according to claim 1, wherein the flexible display panel comprises a straight panel and 4 peripheral panels, the straight panel being located on a top surface of the display device, the 4 peripheral panels being located on 4 side surfaces of the display device;

wherein 4 side surfaces of the display device are uniformly connected with the top surface of the display device.