CN106405723B - Narrow-frame display device - Google Patents

Narrow-frame display device Download PDF

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Publication number
CN106405723B
CN106405723B CN201610817827.0A CN201610817827A CN106405723B CN 106405723 B CN106405723 B CN 106405723B CN 201610817827 A CN201610817827 A CN 201610817827A CN 106405723 B CN106405723 B CN 106405723B
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Prior art keywords
area
display
light
frame
guide structure
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CN106405723A (en
Inventor
王徐亮
祝晓钊
甘帅燕
李伟丽
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/00362-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051Diffusing sheet or layer
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention discloses a narrow-frame display device, which comprises: a display module; the upper cover plate is positioned above the display module and provided with a display area and a frame area, the display area is over against the display module, and the frame area surrounds the outer side of the display area; the light guide structure is positioned on the surface of the upper cover plate and comprises a display overlapping area and a frame overlapping area which are adjacent, the display overlapping area is overlapped with a part of the display area, and the frame overlapping area is overlapped with at least a part of the frame area; when light emitted by the display module is irradiated to the display overlapping area, the light is refracted at the light guide structure, and part of the light is refracted to the frame overlapping area from the display overlapping area. The narrow-frame display device can realize the visual display effect of the ultra-narrow frame, even the display effect without the frame.

Description

Narrow-frame display device
Technical Field
The invention relates to the technical field of display, in particular to a narrow-frame display device.
Background
In current electronic devices, for example, mobile terminals such as mobile phones and tablet computers, the periphery of the display screen of the electronic device has a black edge, that is, the size of the frame is large, the ratio of the display area of the transparent panel is small when viewed from the front of the electronic device, and the width of the black edge (narrow edge) is large, which is inconvenient for users to use.
Disclosure of Invention
To solve the above technical problem, the present invention provides a narrow-bezel display device, including:
a display module;
the upper cover plate is positioned above the display module and provided with a display area and a frame area, the display area is over against the display module, and the frame area surrounds the outer side of the display area; and
the light guide structure is positioned on the surface of the upper cover plate and comprises a display overlapping area and a frame overlapping area which are adjacent, the display overlapping area is overlapped with a part of the display area, and the frame overlapping area is overlapped with at least a part of the frame area;
when light emitted by the display module is irradiated to the display overlapping area, the light is refracted at the light guide structure, and part of the light is guided out of the narrow-frame display device from the frame overlapping area.
Further, the upper cover plate comprises an upper surface and a lower surface opposite to the upper surface, and the light guide structure is located on the lower surface of the upper cover plate.
Further, the light guide structure is a micro-lens structure, the micro-lens structure comprises sequentially arranged rhombohedrons, or the light guide structure comprises at least one layer of diffusion film, and scattering particles are added in each layer of diffusion film.
Further, the light guide structure comprises a plurality of layers of diffusion films which are sequentially stacked from bottom to top, and the refractive indexes of the plurality of layers of diffusion films are sequentially increased from bottom to top.
Further, the narrow-bezel display device includes a substrate and a sealing frit, the display module is located on the substrate, the sealing frit is located between a bezel area of the substrate and an upper cover plate, the light guide structure is located inside the sealing frit, the narrow-bezel display device further includes an additional light guide structure, the additional light guide structure is located on an upper surface of the upper cover plate, the additional light guide structure includes a first area and a second area that are adjacent to each other, the first area overlaps with at least a portion of the light guide structure, and the second area is located at least above a portion of the sealing frit.
Further, the additional light guide structure comprises at least one additional diffusion film, and scattering particles are added in each additional diffusion film.
Furthermore, the additional light guide structure comprises a plurality of layers of additional diffusion films which are sequentially stacked from bottom to top, and the refractive indexes of the additional diffusion films are sequentially increased from bottom to top.
Further, the upper cover plate comprises an upper surface and a lower surface opposite to the upper surface, and the light guide structure is located on the upper surface of the upper cover plate.
Further, the light guide structure comprises at least one diffusion film, and scattering particles are added in each diffusion film.
Further, the light guide structure comprises a plurality of layers of diffusion films which are sequentially stacked from bottom to top, and the refractive indexes of the plurality of layers of diffusion films are sequentially increased from bottom to top.
The invention provides a narrow-frame display device, wherein an upper cover plate is positioned above a display module, the upper cover plate is provided with a display area and a frame area, the display area is over against the display module, and the frame area surrounds the outer side of the display area; the light guide structure is positioned on the surface of the upper cover plate and comprises a display overlapping area and a frame overlapping area which are adjacent, the display overlapping area overlaps with part of the display area, and the frame overlapping area overlaps with at least part of the frame area; when the light that the display module assembly sent shines when showing the overlap area, light is in light guide structure department takes place to refract, and part light is from showing the overlap area refraction to the frame overlap area, thereby, make part light follow the frame overlap area to the narrow frame display device is derived outward, realizes the display effect of the super narrow frame in the vision, even no frame display effect.
Drawings
FIG. 1 is a schematic cross-sectional view illustrating a narrow-bezel display device according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating light refraction in a narrow-bezel display device according to a first embodiment of the present invention;
FIG. 3 is an enlarged view of region c of FIG. 2;
FIG. 4 is a schematic cross-sectional view illustrating a narrow-bezel display device according to a second embodiment of the present invention;
FIG. 5 is a diagram illustrating light refraction in a narrow-bezel display device according to a second embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view illustrating a narrow-bezel display device according to a third embodiment of the present invention;
FIG. 7 is a diagram illustrating light refraction in a narrow-bezel display device according to a third embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view illustrating a narrow bezel display apparatus according to a fourth embodiment of the present invention;
FIG. 9 is a diagram illustrating light refraction in a narrow-bezel display device according to a fourth embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view illustrating a narrow bezel display apparatus according to a fifth embodiment of the present invention;
FIG. 11 is a diagram illustrating light refraction in a narrow-bezel display device according to a fifth embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The narrow-bezel display apparatus of the present invention will be described in more detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that those skilled in the art can modify the present invention described herein while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The core idea of the present invention is that the present invention provides a narrow bezel display apparatus, comprising: a display module; the upper cover plate is positioned above the display module and provided with a display area and a frame area, the display area is over against the display module, and the frame area surrounds the outer side of the display area; the light guide structure is positioned on the surface of the upper cover plate and comprises a display overlapping area and a frame overlapping area which are adjacent, the display overlapping area is overlapped with a part of the display area, and the frame overlapping area is overlapped with at least a part of the frame area;
when the light emitted by the display module irradiates the display overlapping area, the light is refracted at the light guide structure, and part of the light is refracted to the frame overlapping area from the display overlapping area, so that part of the light is guided out of the narrow-frame display device from the frame overlapping area, and the visual ultra-narrow frame or even the frameless display effect is realized.
The following examples of the narrow-bezel display device are presented to clearly illustrate the content of the present invention, and it should be understood that the content of the present invention is not limited to the following examples, and other modifications by conventional means of ordinary skill in the art are within the scope of the idea of the present invention.
First embodiment
Fig. 1 to fig. 3 are schematic cross-sectional views illustrating a narrow-bezel display device according to a first embodiment of the invention, wherein fig. 1 is a schematic cross-sectional view illustrating the narrow-bezel display device according to the first embodiment of the invention; FIG. 2 is a schematic diagram illustrating light refraction in a narrow-bezel display device according to a first embodiment of the present invention; fig. 3 is an enlarged view of the region c in fig. 2.
As shown in fig. 1, the narrow-bezel display device 1 includes a display module 120, an upper cover plate 140 and a light guide structure 160, in this embodiment, the display module 120 is a light emitting diode, such as an organic light emitting diode, and in other embodiments of the present invention, the display module 120 may also be a liquid crystal display or the like. Typically, a cathode 130 is disposed on the display module 120. In this embodiment, the narrow-bezel display device further includes a substrate 110 and a sealing frit 150, and the narrow-bezel display device 1 is packaged by using the sealing frit 150. The display module 120 is located on the substrate 110, the sealing frit 150 is located between the substrate 110 and the upper cover plate 140, the sealing frit 150, the substrate 110 and the upper cover plate 140 form an accommodating section 11, and the display module 120 is disposed in the accommodating section 11.
The upper cover plate 140 is located above the display module 130, and the upper cover plate 140 includes an upper surface 141 and a lower surface 142 opposite to the upper surface 141. The upper plate 140 has a display area 140a and a frame area 140b, the display area 140a faces the display module 120, the display area 140a is located directly above the display module 120, the frame area 140b surrounds the display area 140a, the sealing frit 150 is located below the frame area 140b, and a generally black border appears in the frame area 140 b.
In the present embodiment, the light guide structure 160 is located on the lower surface 142 of the upper cover plate 140 and is located inside the sealing frit 150. As shown in fig. 1, the light guide structure 160 includes a display overlapping area 160a and a frame overlapping area 160b that are adjacent to each other, the display overlapping area 160a overlaps a portion of the display area 140a, and the frame overlapping area 160b overlaps at least a portion of the frame area 140b, that is, the display overlapping area 160a is an area where the light guide structure 160 overlaps the display module 120, and the frame overlapping area 160b is an area where the light guide structure 160 does not overlap the display module 120.
Preferably, the light guide structure 160 is a micro-lens structure, the micro-lens structure includes sequentially arranged rhombuses, and the micro-lens structure has a light guide effect. As shown in fig. 2, the light o1 emitted from the display module 120 irradiates onto the display overlapping region 160a of the light guiding structure 160, and the light guiding structure 160 can utilize the principle of refraction to refract the light o1 irradiating onto the display overlapping region 160a to the frame overlapping region 160b and emit the light out of the upper cover plate 140, so that the light exits from the frame region 140 b.
Specifically, as shown in fig. 3, when the light o1 emitted from the display module 120 irradiates the light guide structure 160, the light is reflected and refracted on the surface 161, the refracted light 02 is emitted upward, the reflected light o3 irradiates the surface 162, the light is refracted on the surface 162, and the refracted light o4 is emitted upward and toward the upper cover plate 140. The refracted light o4 changes the propagation range of the light o1, thereby having a light guiding effect.
As shown in fig. 2, when a user views the display, light o5 is emitted from the frame region 140b, so that the light emitting area of the upper cover 140 is larger than the display region 140a (i.e., the area of the light emitting area of the upper cover 140 is larger than the area of the display module 120), thereby reducing the black edge visually and realizing an ultra-narrow frame.
Preferably, as shown in fig. 1, the width k1 of the display overlapping area 160a is 0.01mm to 10mm, preferably 0.05mm, 0.1mm, 0.5mm, 1mm, 2mm, 5mm, or 8mm, which can ensure that enough light is guided to the frame area 140b without affecting the light-emitting effect of the display area 140 a.
In addition, the narrow-frame display device 1 may be used in combination with a polarizer without ink on the frame to further improve the brightness of the frame region 140b, which is understood by those skilled in the art and will not be described herein again.
Second embodiment
Referring to fig. 4-5, fig. 4 is a schematic cross-sectional view illustrating a narrow-bezel display device according to a second embodiment of the present invention; FIG. 5 is a diagram illustrating light refraction in a narrow-bezel display device according to a second embodiment of the present invention. In fig. 4 and 5, reference numerals denote the same components as those of fig. 1 to 3, which represent the same description as the first embodiment. The narrow bezel display apparatus 2 of the second embodiment is substantially the same as the narrow bezel display apparatus 1 of the first embodiment, except that: as shown in fig. 4, the narrow bezel display apparatus 2 further includes an additional light guide structure 270, the additional light guide structure 270 is located on the upper surface of the upper cover plate 140, the additional light guide structure 270 includes a first region 270a and a second region 270b, the first region 270a overlaps at least a portion of the light guide structure 160, and the second region 270b is located at least above a portion of the sealing frit 150, so as to further refract the display overlapping region 160a above the sealing frit 150. In fig. 4, the second region 270b covers the entire sealing frit 150 and extends to the edge of the upper cover plate 140, so as to achieve a completely black edge-free effect.
Preferably, the additional light guide structure 270 includes at least one additional diffusion film, and scattering particles are added in each additional diffusion film to guide light. In fig. 4, the additional light guide structure 270 includes three additional diffusion films 271, 272, and 273 stacked in sequence from bottom to top, and the refractive indexes of the additional diffusion films 271, 272, and 273 are sequentially increased to increase the range in which light can be emitted. In other embodiments of the present invention, the number of layers of the additional diffusion film is not limited to three, and may be specifically set as needed.
As shown in fig. 5, the light o1 emitted from the display module 120 irradiates onto the display overlapping region 160a of the light guiding structure 160, and the light guiding structure 160 can utilize the principle of refraction to refract the light o1 irradiating onto the display overlapping region 160a to the frame overlapping region 160b and emit the light out of the upper cover plate 140, so that the light exits from the frame region 140 b. Meanwhile, the second region 270b receives the light from the upper cover 140, further refracts the light from the second region 270b to the first region 270a, and enables the light to be emitted outwards, and when a user views the display device, the light is emitted from the second region 270b, so that the light emitting area of the upper cover 140 is larger than the display region 140a (i.e. the area of the light emitting area of the upper cover 140 is larger than the area of the display module 120), thereby reducing the black edge visually and achieving the effect of no black edge.
Third embodiment
Referring to fig. 6-7, fig. 6 is a schematic cross-sectional view illustrating a narrow-bezel display device according to a third embodiment of the present invention; FIG. 7 is a diagram illustrating light refraction in a narrow-bezel display device according to a third embodiment of the present invention. In fig. 6 and 7, reference numerals denote the same components as those of fig. 1 to 3, which represent the same description as the first embodiment. The narrow-bezel display apparatus 3 of the third embodiment is substantially the same as the narrow-bezel display apparatus 1 of the first embodiment, except that: the light guide structure 370 includes at least one diffusion film, and scattering particles are added to each diffusion film, so that light can be guided. In fig. 6, the light guide structure 370 includes three diffusion films 371, 372, 373 stacked in sequence from bottom to top, and the refractive indexes of the diffusion films 371, 372, 373 are sequentially increased to increase the range of light emission. In other embodiments of the present invention, the number of the diffusion films is not limited to three, and may be set as needed.
In this embodiment, the light guide structure 370 is located on the lower surface 142 of the upper cover plate 140 and inside the sealing frit 150. As shown in fig. 6, the light guide structure 370 includes a display overlapping area 370a and a frame overlapping area 370b, where the display overlapping area 370a overlaps a portion of the display area 140a, and the frame overlapping area 370b overlaps at least a portion of the frame area 140b, that is, the display overlapping area 370a is an area where the light guide structure 370 overlaps the display module 120, and the frame overlapping area 370b is an area where the light guide structure 370 does not overlap the display module 120.
As shown in fig. 7, the light emitted from the display module 120 is irradiated to the display overlapping area 370a of the light guide structure 370, and the light guide structure 370 may refract the light irradiated to the display overlapping area 370a to the frame overlapping area 370b by using the principle of refraction, and emit the light to the outside of the upper cover plate 140, so that the light is emitted from the frame area 140 b. When a user watches the display panel, light is emitted from the frame region 140b, so that the light emitting area of the upper cover plate 140 is larger than the display region 140a (i.e., the area of the light emitting area of the upper cover plate 140 is larger than the area of the display module 120), thereby reducing black edges visually and realizing an ultra-narrow frame.
Preferably, as shown in fig. 6, the width k3 of the display overlapping area 370a is 0.01mm to 10mm, preferably 0.05mm, 0.1mm, 0.5mm, 1mm, 2mm, 5mm, or 8mm, which can ensure that enough light is guided to the frame area 140b without affecting the light-emitting effect of the display area 140 a.
Fourth embodiment
Referring to fig. 8 to 9, fig. 8 is a schematic cross-sectional view illustrating a narrow bezel display device according to a fourth embodiment of the present invention; FIG. 9 is a diagram illustrating light refraction in a narrow bezel display apparatus according to a fourth embodiment of the present invention. In fig. 8 and 9, reference numerals denote the same components as those of fig. 6 to 7, which represent the same description as the third embodiment. The narrow-bezel display apparatus 4 of the fourth embodiment is substantially the same as the narrow-bezel display apparatus 3 of the third embodiment, except that: as shown in fig. 8, the narrow bezel display apparatus 4 further includes an additional light guide structure 270, the additional light guide structure 270 is located on the upper surface of the upper cover plate 140, the additional light guide structure 270 includes a first region 270a and a second region 270b, the first region 270a overlaps at least a portion of the light guide structure 370, and the second region 270b is located at least above a portion of the sealing frit 150, so as to further refract the display overlapping region 370a above the sealing frit 150. In fig. 4, the second region 270b covers the entire sealing frit 150 and extends to the edge of the upper cover plate 140, so as to achieve a completely black edge-free effect.
Preferably, the additional light guide structure 270 includes at least one additional diffusion film, and scattering particles are added in each additional diffusion film to guide light. In fig. 8, the additional light guide structure 270 includes three additional diffusion films 271, 272, and 273 stacked in sequence from bottom to top, and the refractive indexes of the additional diffusion films 271, 272, and 273 are sequentially increased to increase the range in which light can be emitted. In other embodiments of the present invention, the number of layers of the additional diffusion film is not limited to three, and may be specifically set as needed.
As shown in fig. 9, light emitted from the display module 120 is irradiated to the display overlapping area 370a of the light guide structure 370, and the light guide structure 370 may refract light irradiated to the display overlapping area 370a to the frame overlapping area 370b by using a principle of refraction, and emit the light to the outside of the upper cover plate 140, so that the light is emitted from the frame area 140 b. Meanwhile, the second region 270b receives the light from the upper cover 140, further refracts the light from the second region 270b to the first region 270a, and enables the light to be emitted outwards, and when a user views the display device, the light is emitted from the second region 270b, so that the light emitting area of the upper cover 140 is larger than the display region 140a (i.e. the area of the light emitting area of the upper cover 140 is larger than the area of the display module 120), thereby reducing the black edge visually and achieving the effect of no black edge.
Fifth embodiment
Referring to fig. 10 to fig. 11, fig. 10 is a schematic cross-sectional view illustrating a narrow bezel display apparatus according to a fifth embodiment of the present invention; FIG. 11 is a diagram illustrating light refraction in a narrow-bezel display device according to a fifth embodiment of the present invention. In fig. 10 and 11, reference numerals denote the same components as those of fig. 1 to 3, which represent the same description as the first embodiment. The narrow-bezel display device 5 of the fifth embodiment is substantially the same as the narrow-bezel display device 1 of the first embodiment, except that: as shown in fig. 10, the light guide structure 570 is located on the upper surface of the upper cover plate 140, the light guide structure 570 includes a display overlapping area 570a and a frame overlapping area 570b, which are adjacent to each other, the display overlapping area 570a overlaps a portion of the display area 140a, and the frame overlapping area 570b overlaps at least a portion of the frame area 140b, that is, the display overlapping area 570a is an area where the light guide structure 570 overlaps the display module 120, and the frame overlapping area 570b is an area where the light guide structure 570 does not overlap the display module 120.
The light guide structure 570 includes at least one diffusion film, and scattering particles are added to each diffusion film, so that light can be guided. In fig. 10, the light guide structure 570 includes three diffusion films 571, 572, 573 stacked in this order from bottom to top, and the diffusion films 571, 572, 573 have sequentially increased refractive indexes to increase the range in which light can be emitted. In other embodiments of the present invention, the number of the diffusion films is not limited to three, and may be set as needed.
As shown in fig. 11, light emitted from the display module 120 is irradiated to the display overlapping area 570a of the light guide structure 570, and the light guide structure 570 can refract light irradiated to the display overlapping area 570a to the frame overlapping area 570b by using the principle of refraction, and emit the light to the outside of the upper cover plate 140, so that the light is emitted from the frame area 140 b. When a user watches the display panel, light is emitted from the frame region 140b, so that the light emitting area of the upper cover plate 140 is larger than the display region 140a (i.e., the area of the light emitting area of the upper cover plate 140 is larger than the area of the display module 120), thereby reducing black edges visually and realizing an ultra-narrow frame.
Preferably, as shown in fig. 10, the width k5 of the display overlapping area 570a is 0.01mm to 10mm, preferably 0.05mm, 0.1mm, 0.5mm, 1mm, 2mm, 5mm, or 8mm, which can ensure that enough light is guided to the frame area 140b without affecting the light-emitting effect of the display area 140 a.
For example, the narrow-bezel display device may also be a liquid crystal display device, and the specific implementation steps and ideas thereof are similar to those of the above-mentioned embodiments of the present invention, and extension of this application is easy for those skilled in the art to understand and implement in the light of the teachings of the embodiments of the present invention, and will not be described herein again.
In summary, the present invention provides a narrow bezel display apparatus, including: a display module; the upper cover plate is positioned above the display module and provided with a display area and a frame area, the display area is over against the display module, and the frame area surrounds the outer side of the display area; the light guide structure is positioned on the surface of the upper cover plate and comprises a display overlapping area and a frame overlapping area which are adjacent, the display overlapping area is overlapped with a part of the display area, and the frame overlapping area is overlapped with at least a part of the frame area;
when the light emitted by the display module irradiates the display overlapping area, the light is refracted at the light guide structure, and part of the light is refracted to the frame overlapping area from the display overlapping area, so that part of the light is guided out of the narrow-frame display device from the frame overlapping area, and the visual ultra-narrow frame or even the frameless display effect is realized.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (5)

1. A narrow bezel display apparatus, comprising:
a substrate;
the display module is positioned on the substrate;
the upper cover plate is positioned above the display module and provided with a display area and a frame area, the display area is over against the display module, the frame area surrounds the outer side of the display area, and the upper cover plate comprises an upper surface and a lower surface opposite to the upper surface;
the light guide structure is positioned on the lower surface of the upper cover plate and comprises a display overlapping area and a frame overlapping area which are adjacent, the display overlapping area is overlapped with a part of the display area, and the frame overlapping area is overlapped with at least a part of the frame area; and
the additional light guide structure is positioned on the upper surface of the upper cover plate and comprises a first area and a second area which are adjacent, the first area is overlapped with at least part of the light guide structure, the second area is positioned on the frame area, the additional light guide structure comprises at least one layer of additional diffusion film, and scattering particles are added in each layer of additional diffusion film;
when light emitted by the display module is irradiated to the display overlapping region, the light is refracted at the light guide structure, part of the light is refracted from the display overlapping region to the frame overlapping region and is emitted to the outside of the upper cover plate, so that light is emitted from the frame region of the upper cover plate, meanwhile, the second region receives the light from the upper cover plate, and further refracts part of the light from the second region to the first region, and emits the light to the outside, so that the light emitting area of the upper cover plate is larger than the display region visually.
2. The narrow-bezel display device of claim 1, wherein the light guide structure is a micro-lens structure comprising sequentially arranged rhombuses, or wherein the light guide structure comprises at least one layer of diffusion film, and scattering particles are added in each layer of diffusion film.
3. The narrow bezel display apparatus of claim 2, wherein the light guiding structure comprises a plurality of diffusion films stacked in a bottom-up order, and refractive indices of the plurality of diffusion films increase in a bottom-up order.
4. The narrow bezel display device of any of claims 1-3, further comprising a sealing frit located between a bezel region of the substrate and an upper cover plate, wherein the light guide structure is located inside the sealing frit, and wherein the second region of the additional light guide structure is located at least partially above the sealing frit.
5. The narrow bezel display apparatus of claim 1, wherein the additional light guiding structure comprises a plurality of layers of the additional diffusion films stacked in a bottom-up order, and refractive indices of the plurality of layers of the additional diffusion films increase in a bottom-up order.
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