CN217880689U - Cover plate assembly, display screen assembly and display device - Google Patents

Abstract

The application provides a apron subassembly, display screen subassembly and display device, apron subassembly lid is established on display device's display screen, the apron subassembly includes apron body and printing ink layer, the apron body is through setting up the arc on flat-plate base plate, it is protruding to the direction that deviates from the base plate that the arc is protruding, form air gap between arc and the base plate, the light that the display screen sent passes behind the base plate, the refraction takes place in interface department between base plate and air, disperse to the edge of apron body, refraction light shines when the back of arc, continue to take place the refraction at the interface of air and arc, the cambered surface of arc makes light continue to disperse to the edge of arc. Therefore, light rays emitted by the edge of the display screen are diffused in the cover plate body through continuous refraction, the area of a display area of the display screen assembly is enlarged, the black edge phenomenon of the display screen assembly is improved or even eliminated, the screen area ratio of the display screen assembly is improved, and the display device achieves a frameless effect.

Description

Cover plate assembly, display screen assembly and display device

Technical Field

The application relates to the technical field of display, in particular to a cover plate assembly, a display screen assembly and a display device.

Background

With the development of terminal equipment such as mobile phones, tablet computers and desktop computers, the requirement for screen occupation is higher and higher in the aspect of the appearance of the whole machine, so that a frameless display effect is expected to be achieved.

The display screen of the terminal device generally includes a display module and a cover plate, and the cover plate is disposed on a light emitting surface of the display module. The display screen supports through the center, and the overlap joint is on the center outside the edge of apron stretches out display module assembly's side. The edge of the internal surface of apron is provided with black printing ink layer usually to shelter from the center of below through the printing ink layer, so, when the display screen was lighted, the printing ink layer on the apron was shone to the light at display module group edge was absorbed by the printing ink layer, leads to the display screen under the display state, has black limit phenomenon.

Due to the fact that the display screen has the black edge in the display state, the screen occupation ratio of the display screen is reduced, and the frameless display effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The application provides a apron subassembly, display screen subassembly and display device, and the apron subassembly can make the light that the display screen sent to the marginal diffusion, improves the black limit phenomenon of display screen, realizes no frame display effect.

In a first aspect, the present application provides a cover plate assembly for covering a display screen of a display device, the cover plate assembly including a cover plate body and an ink layer; the cover plate body comprises a substrate and an arc-shaped plate, the substrate is attached to the light emitting surface of the display screen, the ink layer covers the edge area of one side surface of the substrate facing the display screen, and the arc-shaped plate is connected to one side surface of the substrate away from the display screen;

wherein, the arc is protruding to the direction that deviates from the base plate, has air gap between arc and the base plate.

The application provides a apron subassembly, the lid is established on display device's display screen, the apron subassembly is including apron body and printing ink layer, the apron body is through setting up the arc on flat-plate base plate, the arc is protruding to the direction that deviates from the base plate, form air gap between arc and the base plate, the light that the display screen sent passes behind the base plate, the refraction takes place in interface department between base plate and air, disperse to the edge of apron body, when refraction light shines the back of arc, continue to take place the refraction at the interface of air and arc, the cambered surface of arc makes light continue to disperse to the edge of arc. Therefore, light rays emitted by the edge of the display screen are diffused in the cover plate body through continuous refraction, the area of a display area of the display screen assembly is enlarged, the black edge phenomenon of the display screen assembly is improved or even eliminated, the screen area ratio of the display screen assembly is improved, and the display device achieves a frameless effect.

In a possible embodiment, an adhesive layer is disposed on an edge of the light-emitting surface of the substrate, and the edge of the arc-shaped plate is adhered to the adhesive layer.

The arc-shaped plate which is processed and manufactured separately is bonded on the base plate through the adhesive layer to form the cover plate body, so that the processing and manufacturing of the arc-shaped plate are facilitated, and the processing precision of the arc-shaped plate can be guaranteed. Wherein, the arc adopts the mode and the cover connection that bond, and the connected mode is simple, and the packaging efficiency of apron body is high, and the viscose layer is little to the influence of ray propagation, can not cause obvious interference to the light path of light at the arc flange marginal zone.

In a possible embodiment, the outer edge of the adhesive layer is flush with the outer edge of the ink layer, and the width of the adhesive layer is smaller than the width of the ink layer.

Through the outward flange parallel and level that makes the outward flange on viscose layer and printing ink layer, and the width on viscose layer is less than the width on printing ink layer, reduces the viscose layer to the influence of the light of shining the marginal area of arc to make the light that jets out from near region of the inward flange on printing ink layer also can avoid the viscose layer, shine the marginal area of arc through air gap, strengthens the definition of the display screen in arc flange marginal area.

In a possible embodiment, the width of the adhesive layer is less than or equal to 1/2 of the width of the ink layer.

In one possible embodiment, the thickness of the arc plate is gradually reduced from the center line of the arc plate to both sides in the bending direction of the arc plate.

The thickness of the arc-shaped plate is gradually reduced from the bending center to the two sides, so that on the basis of ensuring the overall thickness of the arc-shaped plate, the width of an air gap between the two sides of the arc-shaped plate is increased by reducing the thickness of the edge of the arc-shaped plate, the effect of outward light radiation of the cover plate body is enhanced, and the area of a display area of the display screen assembly is increased; and, the width that is located the viscose layer at arc edge reduces thereupon, has weakened the viscose layer and to the influence of apron body edge area's light propagation, has strengthened the definition of the edge part of the display area of display screen subassembly.

In a possible embodiment, a side surface of the arc plate facing away from the substrate is a first arc surface, a side surface of the arc plate facing the substrate is a second arc surface, and a curvature radius of the first arc surface is smaller than a curvature radius of the second arc surface.

The curvature radius of the first cambered surface of the arc-shaped plate, which deviates from the substrate, is smaller than that of the second cambered surface facing the substrate, the included angle between the tangential direction of the first cambered surface at the edge part of the arc-shaped plate and the tangential direction of the second cambered surface is larger, in the light emitted by the pixel unit of the edge area on the display screen, the light obliquely emitted to the edge area of the arc-shaped plate and the light emitted approximately perpendicularly are emitted in the direction approximately perpendicular to the display screen at different positions on the first cambered surface, and the amplification of the display image of the arc-shaped plate, which is close to the edge area, is realized.

In one possible embodiment, the cover plate body further includes a first anti-reflection layer covering at least one of a side surface of the substrate facing the arc plate and a side surface of the arc plate facing the substrate.

The antireflection layer is arranged on at least one of the side surface of the substrate facing the arc-shaped plate and the side surface of the arc-shaped plate facing the substrate, so that the antireflection layer can weaken or even eliminate the reflection phenomenon of the corresponding surface, and the light-emitting rate of the display screen is improved.

In one possible embodiment, the first antireflection layer completely surrounds the air gap.

The first anti-reflection layer covers the side surface of the cover plate facing the arc-shaped plate and the side surface of the arc-shaped plate facing the cover plate, so that the first anti-reflection layer completely surrounds the air gap, the reflection phenomenon generated by the first anti-reflection layer on the interface between the cover plate body and the air gap is well and completely counteracted, and the light-emitting rate of the display screen can be remarkably improved.

In a possible embodiment, the cover plate body further includes a second antireflection layer covering a side surface of the arc plate facing away from the substrate.

Through covering the second antireflection layer on the surface of one side of the arc-shaped plate departing from the substrate, the second antireflection layer can weaken or eliminate the reflection phenomenon of external environment light on the first arc surface of the arc-shaped plate, and the definition of the display screen assembly is ensured.

In one possible embodiment, the first and second antireflective layers each comprise at least one low refractive index layer.

In a second aspect, the present application provides a display screen assembly, which includes a display screen and a cover plate assembly as described above, wherein the display screen is disposed on one side of the base plate of the cover plate assembly deviating from the arc-shaped plate.

The application provides a display screen subassembly, including display screen and apron subassembly, the play plain noodles at the display screen is established to apron subassembly lid, the apron subassembly is including apron body and printing ink layer, the apron body is through setting up the arc on flat-plate base plate, the arc is protruding to the direction that deviates from the base plate, form air gap between arc and the base plate, the light that the display screen sent passes behind the base plate, the refraction takes place in interface department between base plate and air, disperse to the edge of apron body, when the back of arc is shone to the refracted light, continue to take place the refraction at the interface of air and arc, the cambered surface of arc makes light continue to disperse to the edge of arc. Therefore, light rays emitted by the edge of the display screen are diffused in the cover plate body through continuous refraction, the area of a display area of the display screen assembly is enlarged, the black edge phenomenon of the display screen assembly is improved or even eliminated, the screen area ratio of the display screen assembly is improved, and the display device achieves a frameless effect.

In one possible embodiment, an optical adhesive layer is disposed between the display screen and the substrate.

Through set up the optics glue film between display screen and apron subassembly, bond the base plate towards the display screen of apron subassembly on the display screen through the optics glue film, realize the connection of apron subassembly and display screen. The optical adhesive layer is high in transmittance and good in connection strength, and can meet the light transmission requirement and the strength requirement of the display screen assembly.

In a possible implementation manner, the display screen is an OLED display screen, and the display screen includes a display module and a polarizer, and the polarizer is disposed between the optical adhesive layer and the display module.

By designing the display screen into the OLED display screen, self-luminescence of the display screen can be realized, and the thickness of the display screen assembly can be reduced. The display screen is provided with the polaroid on the light emergent side of the display module, so that the glare phenomenon of the display screen assembly can be weakened or even eliminated.

In a possible implementation manner, the display screen further includes a supporting layer, and the supporting layer is disposed on a side surface of the display module, which is away from the cover plate assembly.

Set up the supporting layer through the back at display module assembly, support display module assembly to the intensity of increase display screen guarantees that the display screen subassembly is firm reliable.

In a possible implementation manner, the display screen further includes a buffer layer, and the buffer layer is disposed on a side surface of the support layer, which faces away from the display module.

Through setting up the buffer layer at the back of display screen, the display screen subassembly relies on the buffer layer to support on the center, and the buffer layer can cushion and weaken the external force that the display screen subassembly received, promotes the stability and the reliability of display screen subassembly.

In a possible implementation, the display screen is an LCD display screen, the display screen includes a display module and a backlight module, and the display module is disposed between the optical adhesive layer and the backlight module.

Through designing the display screen into the LCD display screen, the display screen includes display module assembly and the backlight unit who is located the display module assembly back, provides sufficient, the even light source of distribution of luminance for display module assembly through backlight unit, and the light source shines to display module assembly so that display module assembly shows the picture.

In a possible implementation manner, the display screen further comprises an upper polarizer and a lower polarizer, the upper polarizer is arranged between the optical adhesive layer and the display module, and the lower polarizer is arranged between the display module and the backlight module.

The front surface and the back surface of the display module are respectively provided with the upper polarizer and the lower polarizer, the lower polarizer is used for converting light generated by the backlight module into polarized light, and the upper polarizer is used for analyzing the polarized light after being electrically modulated by the liquid crystal to generate light-dark contrast so as to enable the display screen to display pictures.

In a third aspect, the present application provides a display device comprising a housing and a display screen assembly as described above, the housing enclosing a side wall and a back surface of the display screen assembly.

The application provides a display device includes shell and display screen, the shell encloses the lateral wall and the back of establishing at the display screen subassembly, the display screen subassembly includes display screen and apron subassembly, the play plain noodles at the display screen is established to apron subassembly lid, the apron subassembly includes apron body and printing ink layer, the apron body is through setting up the arc on flat-plate base plate, the arc is protruding to the direction that deviates from the base plate, form air gap between arc and the base plate, the light that the display screen sent passes behind the base plate, the refraction takes place in interface department between base plate and air, disperse to the edge of apron body, when refraction shines to the back of arc, continue to take place the refraction at the interface of air and arc, the cambered surface of arc makes light continue to disperse to the edge of arc. Therefore, light rays emitted by the edge of the display screen are diffused in the cover plate body through continuous refraction, the area of a display area of the display screen assembly is enlarged, the black edge phenomenon of the display screen assembly is improved or even eliminated, the screen occupation ratio of the display screen assembly is improved, and the display device achieves the frameless effect.

Drawings

Fig. 1 is a schematic structural diagram of a mobile phone;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3a is a schematic diagram of a display panel assembly of a related art display device;

FIG. 3b is a schematic diagram illustrating the light path of the emergent light of the display panel assembly shown in FIG. 3 a;

fig. 4a is a schematic structural diagram of a display screen assembly according to an embodiment of the present disclosure;

FIG. 4b is a schematic diagram illustrating the light path of the emergent light of the display panel assembly shown in FIG. 4 a;

FIG. 5 is a schematic structural diagram of another display screen assembly provided in an embodiment of the present application;

fig. 6a is a specific structural diagram of a display screen assembly according to an embodiment of the present application;

fig. 6b is a specific structural diagram of another display screen assembly provided in the embodiment of the present application.

Description of the reference numerals:

1-a display device;

10-a display screen assembly;

100-a cover plate assembly;

110-a cover plate body; 120-ink layer;

111-a substrate; 112-an arc plate; 113-an adhesive layer; 114-an anti-reflection layer;

1121-first arc; 1122-second arc; 1141-a first anti-reflection layer; 1142-a second anti-reflection layer;

a-an air gap;

200-a display screen;

200 a-an OLED display screen; 200 b-an LCD display screen;

210-a display module; 220-a polarizer; 230-a support layer; 240-a buffer layer; 250-a backlight module;

220 a-an upper polarizer; 220 b-lower polarizer;

300-optical glue layer;

20-a housing;

201-middle frame; 202-rear cover;

2011-rim portion; 2012-middle plate part;

30-a main board;

10 a-a display screen assembly; 11-a display screen; 12-a cover plate; 13-optical glue layer; 14-ink layer.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

Display devices such as mobile phones, tablet computers, notebook computers, desktop computers, displays, televisions and the like are all provided with display screens, and the display screens are used for displaying images and colors. Fig. 1 is a schematic structural diagram of a mobile phone. Referring to fig. 1, taking the display device 1 as a mobile phone as an example, the display device 1 may include a display screen assembly 10 and a housing 20, where the display screen assembly 10 is used for displaying pictures, and the housing 20 is used for supporting and protecting the display screen assembly 10.

In the present embodiment, one side surface of the display screen of the display device 1 is defined as its front surface, and the other side surface of the display device 1 opposite to its front surface is defined as its back surface, and the front and back surfaces of the relevant parts of the display device 1 correspond to the display device 1. The front surface of the display screen assembly 10, i.e. the surface of the display screen assembly 10, is exposed outside the casing 20 for the user to view or operate the display device 1, and the casing 20 is enclosed on the side wall and the back surface of the display screen assembly 10 for supporting and protecting the display screen assembly 10.

The display screen assembly 10 and the housing 20 together form a receiving space of the display device 1, and other components of the display device 1 may be disposed in the receiving space, for example, a main board, a speaker, a battery, and other devices are disposed in the receiving space.

Fig. 2 is an exploded view of fig. 1. Referring to fig. 2, the housing 20 may include a middle frame 201 and a rear cover 202, the rear cover 202 may be a flat plate-shaped member, the rear cover 202 is located at the rear of the display device 1, and the middle frame 201 is coupled between the display screen assembly 10 and the rear cover 202. The middle frame 201 may include a frame portion 2011 and a middle plate portion 2012, the frame portion 2011 surrounds the periphery of the display device 1, the middle plate portion 2012 is located in an area surrounded by the frame portion 2011, an edge of the middle plate portion 2012 is connected to an inner side wall of the frame portion 2011, and exemplarily, the middle plate portion 2012 and the frame portion 2011 may be an integrally formed structure.

The display panel assembly 10 is usually supported on the middle plate 2012 of the middle frame 201 in an overlapping manner, and the display panel assembly 10 can be fixedly connected to a front end surface (a side end surface of the frame part 2011 facing the front surface of the display device 1) of the frame part 2011 of the middle frame 201. The edge of the rear cover 202 may be fixedly connected to the rear end surface of the bezel portion 2011 of the middle frame 201 (the end surface of the bezel portion 2011 facing the back surface of the display device 1), and a gap may be formed between the middle plate 2012 of the middle frame 201 and the rear cover 202, and the gap may be used to dispose other devices of the display device 1. For example, fig. 2 illustrates that the main board 30 is attached to a side surface of the middle board part 2012 facing the rear cover 202, and in practical applications, the main board 30 may be electrically connected to the display panel assembly 10, and the display screen of the display panel assembly 10 is controlled by the main board 30.

Fig. 3a is a schematic structural diagram of a display screen assembly of a display device in the related art. Referring to fig. 3a, in the related art, a display panel assembly 10a includes a display panel 11 and a cover plate 12, the cover plate 12 is disposed on a front surface of the display panel 11, and the cover plate 12 may be adhered to the display panel 11 by an Optical Clear Adhesive (OCA) layer 13. The edge of the cover plate 12 extends out of the display screen 11, as shown in fig. 2, so that the display screen 11 can be supported on the middle plate 2012 of the middle frame 201, the edge of the cover plate 12 can be overlapped on the frame part 2011 of the middle frame 201, and the edge of the cover plate 12 can be connected and fixed with the frame part 2011 by glue.

In order to ensure the appearance of the display device, a circle of ink layer 14 is usually disposed around the edge region of the back surface of the cover plate 12 (the surface of the side of the cover plate facing the display screen 200), and the frame part 2011 below the edge of the cover plate 12 is shielded by the ink layer 14. Moreover, the inner edge of the ink layer 14 generally extends inward to have a certain overlapping area with the edge of the display screen 11, so as to ensure that the ink layer 14 completely covers the frame part 2011, and in addition, the ink layer 14 covers the gap between the display screen 11 and the frame part 2011, so that a certain light leakage prevention effect can be achieved.

FIG. 3b is a schematic diagram of the light path of the emergent light of the display panel assembly shown in FIG. 3 a. Referring to fig. 3b, in the display panel 11, in the display state, light emitted from the area near the edge of the display panel 11 is irradiated to the ink layer 14 and absorbed by the ink layer 14, and the edge area of the cover plate 12 is black without light, which is a so-called black edge phenomenon. The influence of the black edge on the edge of the cover plate 12 causes the screen occupation ratio of the display screen assembly 10a to be reduced, and the display effect of the full screen cannot be realized.

To this end, in the display device 1 of this embodiment, the display screen assembly 10 is designed, the cover plate assembly is formed by connecting the arc plates to the substrate, and the cover plate assembly can diffuse light emitted from the edge of the display screen outwards, so that the edge of the cover plate assembly can also display a picture, and the black edge phenomenon of the display device 1 is improved, so that the display device 1 realizes a frameless display effect.

The display panel assembly 10 of the present embodiment will be described in detail below.

Fig. 4a is a schematic structural diagram of a display screen assembly according to an embodiment of the present disclosure. Referring to fig. 4a, the display screen assembly 10 of the present embodiment includes a display screen 200 and a cover plate assembly 100, as shown in fig. 2, the back surface of the display screen 200 faces a rear cover 202, the back surface of the display screen 200 may be overlapped and fixed on a middle plate 2012 of a middle frame 201, the front surface of the display screen 200 is exposed outside the housing 20, the front surface of the display screen 200 emits light and displays a picture, and the cover plate assembly 100 covers the front surface of the display screen 200, so as to protect the display screen 200 and prevent the display screen 200 from being damaged by scratches, bumps, and the like.

For example, the display panel 200 has a plurality of pixel units (not shown in the drawings) arranged in an array, and typically, each pixel unit includes at least one red sub-pixel, one green sub-pixel, and one blue sub-pixel, and each sub-pixel may be connected with a transistor (not shown in the drawings), and the transistor controls the on and off of the corresponding sub-pixel. The light transmittance of each sub-pixel in each pixel unit is controlled by a transistor, so that the display panel 200 displays an image.

An Optical Clear Adhesive (OCA) layer is disposed between the display panel 200 and the cover plate assembly 100, and the cover plate assembly 100 is adhered to the front surface of the display panel 200 through the optical Adhesive layer 300, so that the cover plate assembly 100 is fixed on the display panel 200 to form the display panel assembly 10. The optical adhesive is prepared by preparing an optical acrylic adhesive into a non-base material, and then respectively attaching a layer of release film to the two side surfaces of the base material to form a double-sided adhesive tape without a base material. The optical adhesive layer 300 has high light transmittance (total light transmittance > 99%), has no boundary, and can enlarge the visible area of the display screen assembly 10; the connection strength is high, so that the surface of the display screen assembly 10 can be smoother; in addition, the optical adhesive layer 300 can increase the contrast of the display screen assembly 10, especially under strong light irradiation.

With reference to fig. 4a, the edge of the cover plate assembly 100 extends out of the display screen 200, and as shown in fig. 2, the edge of the cover plate assembly 100 extending out of the display screen 200 may overlap the frame part 2011 of the middle frame 201, the display screen 200 is accommodated in the space enclosed by the cover plate assembly 100 and the frame part 2011, the cover plate assembly 100 covers the front of the display screen 200, the frame part 2011 surrounds the periphery of the display screen 200, and the back of the display screen 200 is supported on the middle plate part 2012. In this way, the cover plate assembly 100 and the middle frame 201 are relied on to provide full enclosure protection for the display screen 200.

The cover assembly 100 includes a cover body 110 and an ink layer 120. The cover plate body 110 covers the front surface of the display screen 200 to protect the display screen 200, and the edge of the cover plate body 110 extends out of the side edge of the display screen 200 and is supported on the frame part 2011 of the middle frame 201. Ink layer 120 sets up the side surface (the back of apron subassembly 100) that bonds with display screen 200 at apron body 110, and ink layer 120 covers the marginal area at apron body 110, and the marginal round of apron body 110 is established to annular ink layer 120 ring, and ink layer 120 covers the frame portion 2011 that is located the edge below of apron subassembly 100, forms to frame portion 2011 and shelters from, avoids observing the frame portion 2011 of center 201 from the front of display screen subassembly 10 to promote the outward appearance effect of display screen subassembly 10.

The width of ink layer 120 is greater than the thickness of frame part 2011, where the thickness of frame part 2011 is the distance between the side wall surface of frame part 2011 facing middle plate 2012 and the side wall surface of frame part 2011 facing the peripheral side of display device 1. The ink layer 120 extends inward to cover the edge region of the display screen 200, and for the optical adhesive layer 300 flush with the edge of the display screen 200, a partial region of the ink layer 120 extends into the coverage range of the optical adhesive layer 300, that is, the optical adhesive layer 300 covers a partial width of the ink layer 120. Thus, the width of the ink layer 120 is increased, the frame part 2011 of the middle frame 201 can be completely covered by the ink layer 120, and the appearance effect of the display screen assembly 10 is ensured. For example, the ink layer 120 may be a black ink layer.

To the condition that ink layer 120 stretches into the coverage of optical cement layer 300, when making display screen subassembly 10, can print round ink layer 120 at the marginal area of apron subassembly 100 earlier, and, realize bonding good optical cement layer 300 in the front of display screen 200, later, will be provided with apron subassembly 100 of ink layer 120 and the display screen 200 that is equipped with optical cement layer 300 and close, bond apron subassembly 100 on display screen 200, make optical cement layer 300 cover the subregion of ink layer 120, accomplish the equipment of apron subassembly 100 and display screen 200, form display screen subassembly 10.

With continued reference to fig. 4a, in order to improve the black edge phenomenon of the display panel assembly 10, in the present embodiment, the cover plate body 110 is designed to include a base plate 111 and an arc-shaped plate 112, the base plate 111 is, for example, a flat plate structure, the base plate 111 is adhered to the front surface of the display panel 200, and the arc-shaped plate 112 is connected to a side of the base plate 111 facing away from the display panel 200. The edge of the arc plate 112 is connected with the edge of the substrate 111, the arc plate 112 is curved and convex in a direction away from the substrate 111, and an air gap a is formed between the arc plate 112 and the substrate 111. Also, in the bending direction of the arc plate 112, the central region of the arc plate 112 is a convex top region of the arc plate 112 where the air gap a formed between the arc plate 112 and the substrate 111 is the largest.

FIG. 4b is a schematic diagram of the light path of the emergent light of the display panel assembly shown in FIG. 4 a. Referring to fig. 4b, for the optical path structure of the display panel assembly 10, light emitted from the display panel 200 enters the substrate 111 of the cover plate assembly 100 through the optical adhesive layer 300, and after exiting from the substrate 111, propagates in the air gap a between the substrate 111 and the arc plate 112, and then enters the arc plate 112, and finally exits from the other side of the arc plate 112, and an image is formed on the side of the arc plate 112 facing the user.

Because the air gap a is formed between the substrate 111 and the arc plate 112, referring to fig. 4b, light emitted from the display screen 200 and obliquely emitted toward the edge of the cover plate body 110, especially light emitted from pixel units near the edge of the display screen 200 and emitted toward the edge of the cover plate body 110, passes through the optical adhesive layer 300 and the substrate 111 in sequence to irradiate the front surface of the substrate 111, and then is refracted at the interface between the substrate 111 and the air and diffused toward the edge of the cover plate body 110. The refracted light is irradiated to the back of the arc plate 112, refraction continues to occur at the interface between the air and the arc plate 112, and the light rays continue to be diffused towards the edge of the arc plate 112 due to the arc surface of the arc plate 112.

Therefore, the light emitted from the front surface of the arc plate 112 is gradually diffused toward the edge of the arc plate 112 under the continuous refraction and diffusion effect, the emergent light of the display screen 200 is diffused through the air gap a between the substrate 111 and the arc plate 112 and the refraction and diffusion effect of the arc plate 112, the light emitting range of the cover plate assembly 100 is expanded, and the light can be diffused to the edge area of the arc plate 112. That is to say, in the display state of the display panel 200, the edge region of the arc-shaped plate 112 located above the ink layer 120 can also be illuminated to display the image, so as to enlarge the area of the display region of the display panel assembly 10, and reduce the area of the non-display region at the periphery of the display region, that is, reduce the width of the black edge of the display panel assembly 10, improve the black edge phenomenon of the display panel assembly 10, and improve the screen occupation ratio of the display panel assembly 10.

Hereinafter, the front surface of the arc plate 112 facing away from the substrate 111 is defined as a first arc surface 1121 of the arc plate 112, and the back surface of the arc plate 112 facing the substrate 111 is defined as a second arc surface 1122 of the arc plate 112.

Through the thickness to arc plate 112, bending dimension and the base plate 111 between the size of air gap a design, can increase the refracting index of shining the light at the edge of apron body 110, the light-emitting light diffusion skew of the marginal area who makes arc plate 112 to the unlimited side that is close to arc plate 112, thereby, under display screen 200's display state, display screen assembly 10's display area can enlarge to the front that covers arc plate 112 completely, so, can eliminate display screen assembly 10's black border phenomenon completely, reach the display effect of full face screen.

In addition, it should be noted that, for the arc plate 112 disposed on the front surface of the substrate 111, as the protective layer located at the outermost side of the display screen assembly 10, the curvature of the arc plate 112 is generally very small, that is, the protrusion degree of the arc plate 112 is relatively small, the curvature radius of the arc plate 112 is relatively large no matter whether the first arc surface 1121 or the second arc surface 1122 is provided, and the arc surfaces at both sides of the arc plate 112 are relatively smooth. In this way, it is possible to ensure that the arc plate 112 has sufficient strength to provide a good protective effect for the display device 1, and, under repeated pressing operations by a user, to prevent a phenomenon that the arc plate 112 is cracked or even broken.

Referring to fig. 4b, for the arc-shaped plate 112 with a small bending radian and a relatively smooth bending radian, the light rays vertically emitted from the display screen 200 pass through the substrate 111 and the air gap a between the substrate 111 and the arc-shaped plate 112 and then irradiate the second arc-shaped surface 1122 of the arc-shaped plate 112, because the curvature radius of the second arc-shaped surface 1122 is relatively large, the vertically emitted light rays are approximately vertically irradiated to the second arc-shaped surface 1122, the refraction effect of the second arc-shaped surface 1122 on the light rays is relatively small, and the vertical light rays continue to be emitted from the first arc-shaped surface 1121 of the arc-shaped plate 112 in the direction similar to the original light path.

The cover plate body 110 may be made of glass, for example. In order to facilitate the machining of the cover body 110, in some embodiments, the cover body 110 may be a combined structure, the base plate 111 and the arc plate 112 may be separately machined, and then the arc plate 112 and the base plate 111 are connected together to form the cover body 110. Therefore, the arc-shaped plate 112 is convenient to process and manufacture, and the processing precision of the arc-shaped plate 112 is guaranteed.

For example, referring to fig. 4b, the light exiting surface of the substrate 111, i.e., the front surface of the substrate 111 facing the arc-shaped plate 112, may be provided with an adhesive layer 113, the adhesive layer 113 is disposed around the edge of the substrate 111, and the edge of the arc-shaped plate 112 is adhered to the adhesive layer 113 to adhere the arc-shaped plate 112 to the substrate 111. The adhesive layer 113 is made of, for example, optical adhesive, so that the adhesive layer 113 has high transparency and reduces the influence of the optical adhesive on the transmission of light on the side of the arc plate 112; moreover, the connection strength of the optical cement is high, and for the arc-shaped plate 112 connected to the substrate 111 only through the edge, the connection strength of the arc-shaped plate 112 can be ensured, and the overall strength of the cover plate body 110 is improved.

In other embodiments, the cover plate body 110 may also be an integrally formed structure, for example, in a case that the overall thickness of the cover plate body 110 is relatively large, a plate body with a flat surface on one side and an arc surface on the other side may be provided as a base of the cover plate body 110, a hole may be processed in the base to form the cover plate body 110, the processed hole forms the air gap a, and the plate bodies of the cover plate body 110 located on both sides of the air gap a are respectively used as the base plate 111 and the arc plate 112.

Hereinafter, the substrate 111 and the arc plate 112 are separately processed, and the arc plate 112 is bonded to the substrate 111 by the adhesive layer 113. In order to weaken the influence of the adhesive layer 113 on the light propagation in the edge area of the arc plate 112, the width of the adhesive layer 113 may be reduced as much as possible on the basis of ensuring the bonding strength of the arc plate 112, for example, the width of the adhesive layer 113 may be smaller than the width of the ink layer 120, and the orthographic projection of the adhesive layer 113 on the ink layer 120 is completely within the coverage range of the ink layer 120, so that most of the light obliquely emitted to the edge of the arc plate 112 may be emitted into the arc plate 112 directly by avoiding the adhesive layer 113, thereby enhancing the definition of the display picture in the edge area of the arc plate 112.

As shown in fig. 4b, for the light emitted from the pixel unit close to the edge region on the display screen 200 and inclined toward the edge of the cover plate body 110, the light may be emitted from the portion close to the inner edge of the ink layer 120 to the edge of the arc plate 112 in an inclined manner, by making the width of the adhesive layer 113 smaller than the width of the ink layer 120, compared with the inner edge of the ink layer 120, the inner edge of the adhesive layer 113 is closer to the side edge of the cover plate body 110, and the inner edge of the adhesive layer 113 is accommodated in the inner edge of the ink layer 120 in the horizontal direction, so that for the light emitted from the vicinity of the inner edge of the ink layer 120 to the edge of the arc plate 112 in an inclined manner, only the large-angle light may be emitted to the adhesive layer 113, and the light of other large-angle light may be directly emitted to the arc plate 112 from the inner edge of the adhesive layer 113 through the air gap a.

In practical applications, the side of the arc plate 112 is generally flush with the side of the substrate 111, and thus, the outer edge of the adhesive layer 113 may be flush with the outer edge of the substrate 111, so that the outer edges of the adhesive layer 113 and the ink layer 120 respectively located on the two side surfaces of the substrate 111 are flush with the outer edge of the substrate 111. At this time, by making the width of the adhesive layer 113 smaller than the width of the ink layer 120, the inner edge of the adhesive layer 113 is closer to the edge of the substrate 111 than the inner edge of the ink layer 120, and the inner edge of the adhesive layer 113 is spaced from the ink layer 120, so that more light rays irradiated to the edge of the arc-shaped plate 112 can be directed to the edge of the arc-shaped plate 112 while avoiding the adhesive layer 113.

For example, the width of the adhesive layer 113 may be half of the width of the ink layer 120, or the width of the adhesive layer 113 may be less than half of the width of the ink layer 120. Therefore, on the light emergent path of the display screen 200, the inner edge of the adhesive layer 113 is spatially avoided from the inner edge of the ink layer 120, so that a space can be provided for more light rays obliquely emitted to the edge of the arc-shaped plate 112, and more light rays are enabled to avoid the adhesive layer 113 and directly enter the edge of the arc-shaped plate 112.

For the case that the thickness of the edge of the arc plate 112 is relatively thin, the adhesive layer 113 may cover the entire area of the sidewall of the arc plate 112, so as to ensure that the arc plate 112 is firmly bonded; for the case that the thickness of the edge of the arc plate 112 is thicker, on the basis of ensuring the connection strength of the arc plate 112, the adhesive layer 113 extends from the outer edge to the inner edge of the side wall of the arc plate 112 and covers part of the thickness of the side wall of the arc plate 112, so as to maintain the width of the adhesive layer 113 in a smaller range, and minimize the influence of the adhesive layer 113 on the light propagation of the edge area of the arc plate 112.

With continued reference to fig. 4b, in the present embodiment, the curved plate 112 may be designed to have a structure with a thick middle part and thin two sides, that is, the thickness of the curved plate 112 gradually decreases from the center line (shown by the dotted line) of the curved plate 112 to the two sides in the bending direction of the curved plate 112. So, it is enough to have guaranteed the whole thickness of arc 112, on the basis that the intensity of arc 112 satisfies the demands, the thickness at arc 112 both sides edge has been attenuate, because the both sides edge of arc 112 is usually with the both sides edge parallel and level of base plate 111, through the thickness of attenuate arc 112's side, the interval between the inward flange of the both sides of arc 112 has been increased, the width increase of air gap a that arc 112 and base plate 111 enclose, the effect of the outgoing ray of the display screen 200 of outwards dispersing of air gap a has been strengthened, can increase the area of the display area of display screen subassembly 10.

Moreover, the thickness of the side of the arc-shaped plate 112 is reduced, the width of the adhesive layer 113 connected between the side of the arc-shaped plate 112 and the substrate 111 is reduced, the propagation influence of the adhesive layer 113 on the light rays which are emitted from the edge area of the display screen 200 and incline to the edge of the cover plate body 110 is smaller, and the definition of the edge part of the display area of the display screen assembly 10 can be enhanced.

In addition, because the arc plate 112 has a thick middle and thin two sides, the curvature of the first arc surface 1121 of the arc plate 112 is greater than the curvature of the second arc surface 1122, the curvature radius of the first arc surface 1121 is smaller than the curvature radius of the second arc surface 1122, and for a smoother arc plate 112, the curvature radius of the first arc surface 1121 is much smaller than the curvature radius of the second arc surface 1122. Referring to fig. 4b, with such an arrangement, for the pixel unit close to the edge of the display panel 200, the light obliquely irradiated to the edge region of the arc plate 112 from the pixel unit is reflected from the first arc surface 1121 by the refraction effect when the light passes through the interface between the first arc surface 1121 and the air after being emitted from the first arc surface 1121 due to the relatively large included angle between the tangential direction of the first arc surface 1121 and the tangential direction of the second arc surface 1122, so that the light is scattered and recovered, and the light is emitted in the direction approximately perpendicular to the display panel 200.

Similarly, for the pixel units close to the edge of the display screen 200, the light irradiated to the arc plate 112 by the pixel units is approximately perpendicular, because the light is far away from the edge region of the arc plate 112, an included angle between the tangential direction of the first arc surface 1121 and the tangential direction of the second arc surface 1122 of the arc plate 112 is small, the light is refracted by a slight angle when passing through the interface between the air gap a and the second arc surface 1122, the light is also refracted by a slight angle when passing through the interface between the first arc surface 1121 and the external environment, and the light is still emitted in a direction approximately perpendicular to the display screen 200.

In this way, for the same pixel unit near the edge of the display screen 200, the light emitted by the pixel unit includes light emitted approximately perpendicularly from different positions of the first arc surface 1121 of the arc plate 112, so that the display image near the edge region of the arc plate 112 is enlarged.

Because the image displayed on the area near the edge of the arc-shaped plate 112 is an enlarged image, and the brightness of the image is lower than that of the image displayed on the area near the middle of the arc-shaped plate 112, the brightness of the pixel unit near the edge of the display screen 200 can be increased, for example, the brightness of the pixel unit near the edge of the display screen 200 can be more than one time of the brightness of the pixel units of other pixel units, so that the brightness of the image on the area near the edge of the arc-shaped plate 112 is approximately consistent with that of the image on the area near the middle, and the uniformity of the light output of the display screen assembly 10 is ensured. For example, the light-emitting brightness of the corresponding pixel unit can be increased by increasing the aperture ratio of the pixel unit close to the edge area on the display screen 200.

Fig. 5 is a schematic structural diagram of another display screen assembly provided in an embodiment of the present application. Referring to fig. 5, in order to improve the light extraction rate of the display screen assembly 10, in the present embodiment, the cover plate assembly 100 further includes an anti-reflection layer 114, and the anti-reflection layer 114 is disposed on the surface of the cover plate body 110.

Because the air gap a is formed between the substrate 111 and the arc plate 112, light emitted from the display panel 200 is refracted at both the interface between the substrate 111 and the air gap a and the interface between the air gap a and the arc plate 112 (the second arc 1122), and therefore, a reflection phenomenon is easily generated at the interfaces at both sides of the air gap a, thereby reducing the light-emitting rate of the display panel assembly 10.

In contrast, referring to fig. 5, in the embodiment, the anti-reflection layer 114 disposed on the surface of the cover plate body 110 at least includes a first anti-reflection layer 1141, the first anti-reflection layer 1141 may be covered on a side surface of the substrate 111 facing the arc plate 112 to reduce or eliminate a reflection phenomenon of the light-emitting beam of the display screen 200 at an interface between the substrate 111 and the air gap a (a front surface of the substrate 111), or the first anti-reflection layer 1141 may be covered on the second arc surface 1122 of the arc plate 112 to reduce or eliminate a reflection phenomenon of the light-emitting beam of the display screen 200 at the interface between the air gap a and the arc plate 112 (the second arc surface 1122), or the first anti-reflection layer 1141 may cover a side surface of the substrate 111 facing the arc plate 112 and the second arc surface 1122 of the arc plate 112, that is, the first anti-reflection layer 1141 completely surrounds the air gap a, so that the first anti-reflection layer 1141 has a good and complete cancellation effect on the reflection phenomenon generated at the interface between the cover plate body 110 and the air gap a, and can significantly improve the light-emitting rate of the display screen 200.

Referring to fig. 5, in some embodiments, the anti-reflection layer 114 disposed on the surface of the cover plate body 110 may further include a second anti-reflection layer 1142, and the second anti-reflection layer 1142 covers the first arc surface 1121 (a side surface of the arc plate 112 facing away from the substrate 111) of the arc plate 112. Since the second anti-reflection layer 1142 is disposed on the outer surface of the cover plate body 110 exposed to the outside, the second anti-reflection layer 1142 mainly acts on the external ambient light irradiated to the outer surface of the cover plate body 110 to reduce or eliminate the reflection phenomenon of the external ambient light on the first arc 1121 of the arc plate 112, in contrast to the first anti-reflection layer 1141 for preventing the light emitted from the display screen 200 from being reflected. Therefore, under the condition of high brightness of the external environment light, the display screen assembly 10 can be prevented from generating a glare phenomenon, and the definition of the display screen assembly 10 is ensured.

For example, the anti-reflection layer 114 may include a substrate and a low refractive index layer disposed on the substrate, the substrate may be a transparent substrate, the transparent substrate may be a plastic film such as a synthetic resin, the low refractive index layer has a low refractive index, for example, the refractive index of the low refractive index layer may be between 1.25 and 1.35, the low refractive index layer contains low refractive index particles, and the low refractive index particles include inorganic or organic low refractive index particles such as silicon dioxide and magnesium fluoride.

In addition, the anti-reflective layer 114 may further include a high refractive index layer, which may be disposed, for example, between the substrate and the low refractive index layer, and the high refractive index layer may have a higher refractive index, for example, between 1.55 and 1.85. The high refractive index layer contains high refractive index particles, and the high refractive index particles include particles of antimony pentoxide, zinc oxide, titanium oxide, zirconium oxide, cerium oxide, and the like.

In practical applications, a plurality of low refractive index layers and a plurality of high refractive index layers may be disposed in the anti-reflection layer 114, the more low refractive index layers and high refractive index layers are stacked in the anti-reflection layer, the better the anti-reflection effect of the anti-reflection layer 114 is, and in order to control the thickness of the anti-reflection layer 114 and from the viewpoint of cost performance, 2 to 3 structural layers may be typically stacked in the anti-reflection layer 114, for example, one high refractive index layer and two low refractive index layers are disposed in the anti-reflection layer 114.

The specific structure of the display panel 200 will be described in detail below.

Fig. 6a is a specific structural diagram of a display screen assembly according to an embodiment of the present application. Referring to fig. 6a, as an implementation manner, in the display screen assembly 10 of the present embodiment, the display screen 200 disposed below the cover plate assembly 100 may be an Organic Light-Emitting Diode (OLED) display screen, and the display screen 200 can realize self-luminescence and reduce the thickness of the display screen assembly 10, so that the display screen assembly 10 can be better applied to mobile terminals such as mobile phones and tablet computers.

The OLED display panel 200a includes a display module 210, the display module 210 is an OLED display module, the display module 210 generally includes a Thin Film Transistor (TFT) substrate and an OLED layer, a plurality of transistors are arrayed in the TFT substrate, the transistors are used for controlling the on/off of each pixel unit in the OLED layer, the OLED layer generally includes a metal cathode, an electron transport layer, an organic light emitting layer, a hole transport layer and an anode, which are stacked, and the organic light emitting layer is generally provided with at least a red light emitting layer, a green light emitting layer and a blue light emitting layer.

The OLED display 200a further includes a polarizer 220 disposed on a light-emitting surface side of the display module 210, that is, the polarizer 220 is disposed between the optical adhesive layer 300 and the display module 210. Because a plurality of metal electrodes are arranged in the display module 210 of the OLED display screen 200a, the metal electrodes have strong ability to reflect light, especially under the condition of high ambient light brightness, the reflection phenomenon of the metal electrodes is more serious, the light-emitting side of the display module 210 is provided with the polarizer 220, the polarizer 220 is, for example, a circular polarizer 220, the external light enters the display screen 200 and becomes circular polarized light after passing through the polarizer 220, the rotating direction of the circular polarized light after being reflected by the metal electrodes changes, and the circular polarized light is absorbed by the polarizer 220 after passing through the polarizer 220, thereby effectively weakening or even eliminating the glare phenomenon of the display screen assembly 10.

With continued reference to fig. 6a, for the OLED display 200a, a side of the display 200 facing away from the cover plate assembly 100, that is, a back side of the display 200, is further provided with a supporting layer 230, and the supporting layer 230 is located on a side surface of the display module 210 facing away from the polarizer 220 (back side of the display module 210). The thickness of the OLED display 200a is small, and the strength of the display 200 can be improved by providing the supporting layer 230 to support the display 200. For example, the material of the supporting layer 230 may be a plastic material such as Polyimide (PI) or Polyethylene terephthalate (PET).

In addition, a buffer layer 240 may be further disposed on a side of the supporting layer 230 away from the display module 210, and the buffer layer 240 is located on a back surface of the display screen 200, as shown in fig. 2, the display screen 200 may be supported on the middle plate 2012 of the middle frame 201 by the buffer layer 240, and the buffer layer 240 directly contacts the middle plate 2012. When the user operates the front of pressing display screen subassembly 10, effort accessible buffer layer 240 transmits to well plate 2012, through the cushioning effect of buffer layer 240, can reduce the external force that display screen subassembly 10 received, promotes display screen subassembly 10's stability and reliability. The material of the buffer layer 240 is, for example, foam or copper foil.

Fig. 6b is a specific structural diagram of another display panel assembly provided in this embodiment. Referring to fig. 6b, as another implementation manner, in the Display panel assembly 10 of this embodiment, the Display panel 200 disposed below the cover plate assembly 100 may be an LCD (Liquid Crystal Display), the LCD Display panel 200b includes a Display module 210 and a backlight module 250, the cover plate assembly 100 is adhered to the front surface of the Display module 210 through an optical adhesive layer 300, and the backlight module 250 is disposed on the back surface of the Display module 210. The backlight module 250 is used for providing a light source with sufficient brightness and uniform distribution for the display module 210, and the light source irradiates the display module 210 to enable the display module 210 to display a picture.

The backlight module 250 of the LCD panel 200b generally includes a light source (not shown) and a light guide plate (not shown), for example, the backlight module 250 is of a side-in type, the light source is arranged at a side of the light guide plate, which may be a light source arranged at one side of the light guide plate or a light source arranged at two opposite sides of the light guide plate, light emitted from the light source is incident into the light guide plate, and the light guide plate has a light-homogenizing effect, so that the light can be emitted from a light-emitting surface of the light guide plate uniformly. Generally, a reflective sheet is disposed on the back surface of the light guide plate, and the reflective sheet is used to reflect light rays emitted by the light source that do not enter the light guide plate into the light guide plate, so as to improve the light extraction rate of the backlight module 250.

In addition, the backlight module 250 may further include an optical film, for example, a prism film stacked on the light-emitting surface of the light guide plate, wherein the prism film is used to improve the angular distribution of light, and can converge the light emitted from the light guide plate and uniformly diffused to various angles to an axial angle, that is, a front view angle of the display screen 200, so as to improve the axial brightness of the display screen 200.

The display module 210 of the LCD display 200b may include an array substrate (not shown), a liquid crystal layer (not shown), and a color filter substrate (not shown), wherein the array substrate is disposed on the light-emitting side of the backlight module 250, the color filter substrate and the array substrate are arranged in a box-to-box manner, and the liquid crystal layer is sandwiched between the array substrate and the color filter substrate. A plurality of transistors are arranged in the array substrate in an array manner, the transistors are used for forming an electric field between the array substrate and the color film substrate, driving voltage is applied to liquid crystal molecules in the liquid crystal layer, the liquid crystal molecules are driven by the voltage to rotate, the light transmittance is changed, and light irradiates each filter layer (a red filter layer, a green filter layer and a blue filter layer) in the color film substrate, so that image display of the display screen 200 is realized.

In addition, as shown in fig. 6b, the LCD panel 200b may further include an upper polarizer 220a and a lower polarizer 220b, the upper polarizer 220a and the lower polarizer 220b are respectively attached to two sides of the display module 210, wherein the lower polarizer 220b is disposed between the backlight module 250 and the display module 210, the upper polarizer 220a is disposed between the display module 210 and the cover plate assembly 100, the lower polarizer 220b is configured to convert a light beam generated by the light source into polarized light, and the upper polarizer 220a is configured to analyze the polarized light after being electrically modulated by the liquid crystal to generate contrast between light and dark, so that the display panel 200 displays a picture.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the embodiments of the application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Claims (18)

1. A cover plate assembly is used for covering a display screen of a display device and is characterized by comprising a cover plate body and an ink layer; the cover plate body comprises a substrate and an arc-shaped plate, the substrate is attached to the light emergent surface of the display screen, the ink layer covers the edge area of the surface of one side, facing the display screen, of the substrate, and the arc-shaped plate is connected to the surface of one side, facing away from the display screen, of the substrate;

the arc-shaped plate protrudes in the direction away from the substrate, and an air gap is formed between the arc-shaped plate and the substrate.

2. The cover assembly of claim 1, wherein an adhesive layer is disposed on an edge of the light-emitting surface of the substrate, and an edge of the arc plate is adhered to the adhesive layer.

3. The cover assembly of claim 2, wherein an outer edge of the adhesive layer is flush with an outer edge of the ink layer, and the adhesive layer has a width less than a width of the ink layer.

4. The cover sheet assembly according to claim 3, wherein the width of the adhesive layer is less than or equal to 1/2 of the width of the ink layer.

5. The cover plate assembly according to any one of claims 1 to 4, wherein a thickness of the arc plate is gradually reduced from a center line of the arc plate to both sides in a bending direction of the arc plate.

6. The lid assembly of claim 5, wherein a side surface of the arcuate plate facing away from the base plate is a first arcuate surface, a side surface of the arcuate plate facing the base plate is a second arcuate surface, and a radius of curvature of the first arcuate surface is less than a radius of curvature of the second arcuate surface.

7. The lid assembly of any one of claims 1-4, wherein the lid body further comprises a first anti-reflective layer covering at least one of a side surface of the substrate facing the arcuate plate and a side surface of the arcuate plate facing the substrate.

8. The lid assembly of claim 7, wherein the first anti-reflective layer completely surrounds the air gap.

9. The cover plate assembly of claim 7, wherein the cover plate body further comprises a second anti-reflective layer covering a side surface of the arcuate plate facing away from the substrate.

10. The lid assembly of claim 9, wherein the first and second anti-reflective layers each comprise at least one low refractive index layer.

11. A display screen assembly comprising a display screen and the cover plate assembly of any of claims 1-10, wherein the display screen is disposed on a side of the base plate of the cover plate assembly facing away from the arc.

12. A display screen assembly according to claim 11, wherein an optical glue layer is provided between the display screen and the substrate.

13. The display screen assembly of claim 12, wherein the display screen is an OLED display screen, the display screen comprising a display module and a polarizer, the polarizer being disposed between the optical adhesive layer and the display module.

14. The display screen assembly of claim 13, wherein the display screen further comprises a support layer disposed on a side surface of the display module facing away from the cover plate assembly.

15. The display screen assembly of claim 14, wherein the display screen further comprises a buffer layer disposed on a side surface of the support layer facing away from the display module.

16. The display screen assembly of claim 12, wherein the display screen is an LCD display screen, the display screen includes a display module and a backlight module, and the display module is disposed between the optical adhesive layer and the backlight module.

17. The display panel assembly of claim 16, wherein the display panel further comprises an upper polarizer and a lower polarizer, the upper polarizer is disposed between the optical adhesive layer and the display module, and the lower polarizer is disposed between the display module and the backlight module.

18. A display device comprising a housing and a display screen assembly as claimed in any one of claims 11 to 17, the housing being enclosed in side walls and a rear face of the display screen assembly.

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