WO2021244173A1

WO2021244173A1 - Terminal device, flexible screen, and flexible display substrate

Info

Publication number: WO2021244173A1
Application number: PCT/CN2021/088660
Authority: WO
Inventors: 周顺
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-06-03
Filing date: 2021-04-21
Publication date: 2021-12-09
Also published as: CN111739413A

Abstract

A terminal device, a flexible screen, and a flexible display substrate. The flexible substrate comprises a flexible substrate (1), a display layer (2), and a bonding layer (5). The display layer (2) is provided on one side of the flexible substrate (1), and the surface of the display layer (2) facing away from the flexible substrate (1) is a light-exiting surface (3). The light-exiting surface (3) comprises a first area (301) and a second area (302), and a distance between the first area (301) and the surface of the flexible substrate (1) facing away from the display layer (2) is less than a distance between the second area (302) and the surface of the flexible substrate (1) facing away from the display layer (2). The bonding layer (5) covers the first area (301) and the second area (302). The terminal device, the flexible screen, and the flexible display substrate can improve the attachment yield.

Description

Terminal equipment, flexible screen and flexible display substrate

cross reference

This disclosure claims the priority of a Chinese patent application filed on June 3, 2020 with the application number 202010496200.6 entitled "Terminal Equipment, Flexible Screen and Flexible Display Substrate". The entire content of the Chinese patent application is incorporated herein by reference. .

Technical field

The present disclosure relates to the field of terminal technology, and in particular to a terminal device, a flexible screen and a flexible display substrate.

Background technique

With the advancement of technology, flexible screens have attracted more and more attention.

The flexible screen includes a cover plate and a flexible display substrate. The flexible display substrate can emit light to output images. The cover plate covers the light-emitting surface of the flexible display substrate to protect the flexible display substrate. In the preparation process of the flexible screen, the flexible display substrate needs to be attached to the cover plate. However, in the process of attaching the flexible display substrate to the curved cover plate, air bubbles are easily generated on the attaching surface, which reduces the yield of attaching.

It should be noted that the information disclosed in the background art section above is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art.

Public content

The purpose of the present disclosure is to provide a terminal device, a flexible screen, and a flexible display substrate, which can improve the bonding yield.

According to an aspect of the present disclosure, there is provided a flexible display substrate, including:

Flexible substrate

The display layer is arranged on one side of the flexible substrate. The surface of the display layer facing away from the flexible substrate is a light-emitting surface. The light-emitting surface includes a first region and a second region. The distance of the flexible substrate facing away from the surface of the display layer is smaller than the distance between the second area and the surface of the flexible substrate facing away from the display layer;

An adhesive layer covers the first area and the second area.

According to another aspect of the present disclosure, a flexible screen is provided, including:

The cover plate includes a curved plate body and a main plate body connected to the curved plate body;

In the flexible display substrate of any one of the above, the surface of the adhesive layer facing away from the display layer is attached to the inner surface of the cover plate, wherein the adhesive layer corresponds to the surface of the first region Part of the inner surface of the cover plate is located in the area of the curved plate body, and the part of the adhesive layer corresponding to the second area is stuck to the inner surface of the cover plate and is located on the main plate body area.

According to another aspect of the present disclosure, there is provided a terminal device including the above-mentioned flexible screen.

In the terminal device, flexible screen and flexible display substrate of the present disclosure, since the distance between the first area and the surface of the flexible base facing away from the display layer is smaller than the distance between the second area and the surface of the flexible base facing away from the display layer, and the adhesive layer covers The first area and the second area, so that the thickness of the part of the adhesive layer corresponding to the first area is greater than the thickness of the part of the adhesive layer corresponding to the second area, during the process of attaching the flexible display substrate to the cover plate The part of the adhesive layer corresponding to the first area can be pasted to the curved area of the cover plate, and the part of the adhesive layer corresponding to the second area can be pasted to the flat area of the cover plate, so that the first area and the cover plate The adhesion force between the second area and the cover plate is greater than the adhesion force between the second area and the cover, which can avoid the adhesion stress of the flexible display substrate corresponding to the first area being greater than that of the flexible display substrate corresponding to the second area. The relative sliding of the flexible display substrate and the cover plate caused by the bonding stress reduces the generation of bubbles and improves the bonding yield.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

Description of the drawings

By describing its exemplary embodiments in detail with reference to the accompanying drawings, the above and other features and advantages of the present disclosure will become more apparent. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of bonding a flexible display substrate and a cover plate in the related art;

2 is a schematic diagram of a flexible display substrate according to an embodiment of the disclosure;

3 is a partial schematic diagram of a flexible display substrate according to an embodiment of the disclosure;

4 is a schematic diagram of the first projection and the second projection in the flexible display substrate of the embodiment of the disclosure;

5 is another schematic diagram of the first projection and the second projection in the flexible display substrate of the embodiment of the disclosure;

6 is a schematic diagram of a polarizing layer in a flexible display substrate according to an embodiment of the disclosure;

FIG. 7 is a schematic diagram of the arrangement of gratings according to an embodiment of the disclosure;

FIG. 8 is a schematic diagram of a flexible screen according to an embodiment of the disclosure;

FIG. 9 is a schematic diagram of a cover plate in a flexible screen according to an embodiment of the disclosure.

In the figure: 1. flexible substrate; 2. display layer; 201, light-emitting layer; 202, encapsulation layer; 203, touch layer; 204, polarizing layer; 2041, depression; 205, polarizing protective layer; 3. light-emitting surface; 301, the first area; 302, the second area; 4. grating; 5. adhesive layer; 6, cover plate; 601, curved board body; 602, main board body; 7, pressure sensor; 10. Carrier film; 10. Silica gel; 11. Roller; 12. First projection; 1201. Straight edge; 13. Second projection; 14. Third projection.

detailed description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms, and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete, and fully convey the concept of the example embodiments to Those skilled in the art. The described features, structures or characteristics can be combined in one or more embodiments in any suitable way. In the following description, many specific details are provided to give a sufficient understanding of the embodiments of the present disclosure. However, those skilled in the art will realize that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, materials, devices, etc. can be used. In other cases, well-known technical solutions are not shown or described in detail in order to avoid obscuring various aspects of the present disclosure.

In addition, the drawings are only schematic illustrations of the present disclosure, and are not necessarily drawn to scale. The same reference numerals in the figures denote the same or similar parts, and thus their repeated description will be omitted. The terms "a" and "the" are used to indicate the presence of one or more elements; the terms "including" and "have" are used to indicate open-ended inclusion and mean that in addition to the listed elements, there may be Additional elements.

In the related art, as shown in FIG. 1, in the process of attaching the flexible display substrate 8 to the cover plate 6, the flexible display substrate 8 is first attached to a carrier film 9, and then the carrier film 9 faces the flexible display substrate. A force is applied to one side of 8 so that the flexible display substrate 8 is attached to the cover 6. Among them, the flexible display substrate 8 is first attached to the flat area of the cover plate 6, and then the flexible display substrate 8 is attached to the curved area of the cover plate 6 through the roller 11 or the silicone 10. However, during the bonding process, the bonding stress of the portion of the flexible display substrate 8 corresponding to the curved area of the cover 6 is greater than the bonding stress of the portion of the flexible display substrate 8 corresponding to the flat area of the cover 6, resulting in the flexible display substrate The unbalanced stresses received by the flexible display substrate 8 cause the flexible display substrate 8 to slide relative to the cover plate 6, thereby easily generating bubbles and reducing the bonding yield.

In addition, as shown in FIG. 1, the curved area of the cover plate 6 forms a resonant cavity. Wherein, the flexible display substrate 8 includes an anode and a cathode. The anode constitutes the anode reflecting surface of the resonant cavity, and the cathode constitutes the cathode reflecting surface of the resonant cavity. In the resonant cavity, due to the interference of light, the photon density of different energy states or different wavelengths is redistributed, so that only light of a specific wavelength can be emitted at a specific angle after conforming to the cavity mode. Among them, the relationship between the microcavity length, light wavelength and viewing angle of the resonant cavity is shown in the following relationship:

λ _m ＝2πmL _eff ×n×cosθ;

Wherein, L the length of the microcavity, θ _if the resonant cavity of the anode relative to the light reflective surface and reflecting surface of the cathode-shift sum, n _i is the refractive index of the organic layer, d _i is the thickness of the organic layer, m is the resonant cavity Λ is the wavelength of the mode with the order m, θ is the angle, which is the total optical path length including the phase shift of the specular reflection. After the microcavity length L of the resonant cavity is determined, only light of a specific wavelength can be emitted at a specific angle, causing the curved area of the cover plate 6 to emit light of a specific color, such as green light, which reduces the display effect.

In order to solve the problem of low bonding yield, embodiments of the present disclosure provide a flexible display substrate. As shown in Figures 2 and 3, the flexible substrate may include a flexible substrate 1, a display layer 2 and an adhesive layer 5, wherein:

The display layer 2 is provided on one side of the flexible substrate 1. The surface of the display layer 2 facing away from the flexible substrate 1 is the light emitting surface 3. The light emitting surface 3 includes a first area 301 and a second area 302. The distance between the first area 301 and the surface of the flexible substrate 1 facing away from the display layer 2 is smaller than the distance between the second area 302 and the surface of the flexible substrate 1 facing away from the display layer 2. The adhesive layer 5 covers the first area 301 and the second area 302.

As shown in FIGS. 2 and 3, in the flexible display substrate of the embodiment of the present disclosure, the distance between the first area 301 and the surface of the flexible substrate 1 facing away from the display layer 2 is smaller than that of the second area 302 and the flexible substrate 1 facing away from the display layer 2. And the adhesive layer 5 covers the first area 301 and the second area 302, so that the thickness of the part of the adhesive layer 5 corresponding to the first area 301 is greater than that of the adhesive layer 5 corresponding to the second area 302 In the process of attaching the flexible display substrate to the cover plate, the part of the adhesive layer 5 corresponding to the first area 301 can be pasted on the curved area of the cover plate, and the adhesive layer 5 corresponding to the first area The part of the second area 302 is pasted on the flat area of the cover plate, so that the adhesive force between the first area 301 and the cover plate is greater than the adhesive force between the second area 302 and the cover plate, which can avoid the corresponding flexible display substrate. The bonding stress on the portion of the first region 301 is greater than the bonding stress on the portion of the flexible display substrate corresponding to the second region 302. The relative sliding of the flexible display substrate and the cover is caused, which reduces the generation of bubbles and improves The yield rate of the fit.

Hereinafter, each part of the flexible display substrate of the embodiment of the present disclosure will be described in detail:

As shown in FIGS. 2 and 3, the material of the above-mentioned flexible substrate 1 may be polyimide, but the embodiment of the present disclosure does not specifically limit this. The flexible substrate 1 has a uniform thickness.

As shown in FIG. 2 and FIG. 3, the above-mentioned display layer 2 is provided on one side of the flexible substrate 1. The display layer 2 may include a light-emitting layer 201. The light-emitting layer 201 may include an anode, an organic electroluminescent material layer, and a cathode. The anode may be provided on one side of the flexible substrate 1. The organic electroluminescent material layer can be arranged on the side of the anode away from the flexible substrate 1. The cathode may be arranged on the side of the organic electroluminescent material layer away from the anode. The light-emitting layer 201 may also include a hole transport layer. The hole transport layer may be located between the anode and the organic electroluminescent material layer. Of course, the light-emitting layer 201 may also include an electron transport layer. The electron transport layer may be located between the cathode and the organic electroluminescent material layer.

As shown in FIG. 2 and FIG. 3, the above-mentioned display layer 2 may further include an encapsulation layer 202. The encapsulation layer 202 may be provided on the side of the light-emitting layer 201 away from the flexible substrate 1. The encapsulation layer 202 may be a TFE film encapsulation structure. The TFE film packaging structure may include two inorganic layers and an organic layer located between the two inorganic layers. One of the inorganic layers may be provided on the side of the light-emitting layer 201 away from the flexible substrate 1. The flexible display substrate of the present disclosure may further include a touch layer 203. The touch layer 203 may be provided on the side of the packaging layer 202 away from the flexible substrate 1. Taking the display layer 2 including the touch layer 203 as an example, the flexible display substrate may also include a pressure sensor. The pressure sensor can be arranged on the side of the flexible substrate 1 away from the display layer 2. The pressure sensor can include foam, graphite sheet and copper foil. The graphite sheet adopts a double-layer graphite sheet structure, and a glue layer is arranged in the two-layer graphite sheet structure for bonding the two-layer graphite sheet structure.

As shown in FIGS. 2 and 3, the above-mentioned display layer 2 may further include a polarizing layer 204. The polarizing layer 204 may be provided on the side of the light-emitting layer 201 away from the flexible substrate 1. Taking the light-emitting layer 201 including the encapsulation layer 202 as an example, the polarizing layer 204 may be provided on the side of the encapsulation layer 202 away from the flexible substrate 1. The material of the polarizing layer 204 may include polyvinyl alcohol (Polyvinyl Alcohol) and the like. A polarizing protective layer 205 may also be provided on the side of the polarizing layer 204 away from the light-emitting layer 201. The material of the polarizing protective layer 205 may include Tri-cellulose Acetate, but the present disclosure does not specifically limit this. In addition, the display layer 2 may also include an array substrate. The array substrate can be arranged between the flexible base 1 and the anode.

As shown in FIGS. 2 and 3, the surface of the display layer 2 facing away from the flexible substrate 1 is a light-emitting surface 3. Taking the display layer 2 including the polarizing layer 204 as an example, the surface of the polarizing layer 204 facing away from the flexible substrate 1 is the light emitting surface 3. The light emitting surface 3 includes a first area 301 and a second area 302. The distance between the first area 301 and the surface of the flexible substrate 1 facing away from the display layer 2 is smaller than the distance between the second area 302 and the surface of the flexible substrate 1 facing away from the display layer 2, that is, the distance of the display layer 2 corresponding to the portion of the first area 301 The thickness is smaller than the thickness of the portion of the display layer 2 corresponding to the second region 302, that is, the surface of the second region 302 relative to the light-emitting surface 3, and the surface of the light-emitting surface 3 located in the first region 301 is recessed toward the flexible substrate 1. In addition, the first area 301 and the second area 302 are connected by a slope. The angle between the inclined surface and the first area 301 is greater than or equal to 90° to prevent the adhesive layer 5 from breaking at the junction of the first area 301 and the second area 302.

The present disclosure regards the orthographic projection of the light emitting surface on the flexible substrate as the first projection, and the orthographic projection of the first area on the flexible substrate as the second projection. As shown in FIGS. 4 and 5, the first projection 12 may include a straight edge 1201. Further, the first projection 12 may include two straight sides 1201 arranged in parallel. For example, the first projection 12 may be quadrilateral, such as a rectangle. The second projection 13 may be a strip-shaped surface. In other embodiments of the present disclosure, the second projection 13 may also have a square surface, a circular surface, etc., but the embodiment of the present disclosure does not specifically limit this. As shown in FIG. 4, taking the second projection 13 having a strip-shaped surface as an example, the second projection 13 may be parallel to one of the aforementioned straight sides 1201 of the first projection 12. Furthermore, as shown in FIG. 5, the second projection 13 may coincide with a straight side 1201 of the first projection 12, that is, the distance between the second projection 13 and the straight side 1201 is equal to zero. Taking the first projection 12 including two straight edges 1201 arranged in parallel as an example, the number of the first regions is two and spaced apart, and the two first regions form two second projections 13 on the flexible substrate, one second The projection 13 is parallel and coincides with one straight side 1201 of the first projection 12, and the other second projection 13 is parallel and coincides with the other straight side 1201 of the first projection 12. The number of the aforementioned second area may be one. The present disclosure regards the orthographic projection of the second area on the flexible substrate as the third projection 14. The third projection 14 may be located between the two second projections 13 described above. In addition, the length of the second projection 13 may be equal to the length of the straight side 1201, but the embodiment of the present disclosure does not specifically limit this.

As shown in FIGS. 2 and 3, the adhesive layer 5 is used to bond the display layer 2 to the cover plate 6. The adhesive layer 5 covers the first area 301 and the second area 302 described above. Since the distance between the first area 301 and the surface of the flexible substrate 1 facing away from the display layer 2 is smaller than the distance between the second area 302 and the surface of the flexible substrate 1 facing away from the display layer 2, the adhesive layer 5 corresponds to the first area 301 The thickness of the portion of the adhesive layer 5 corresponding to the thickness of the second region 302 is greater than that of the adhesive layer 5. The adhesive layer 5 may be optically clear adhesive, but the embodiment of the present disclosure does not specifically limit this.

As shown in FIG. 3, FIG. 6 and FIG. 7, the above-mentioned display layer 2 may further include a grating 4. The grating 4 may be provided on the side of the light-emitting layer 201 away from the flexible substrate 1, and the orthographic projection of the grating 4 on the flexible substrate 1 is located in the orthographic projection area of the first area 301 on the flexible substrate 1. After the flexible display substrate is attached to the cover plate 6, the curved area of the cover plate 6 constitutes the above-mentioned resonant cavity, and the grating 4 can reduce the energy of light with a specific color emitted by the resonant cavity, improve the display effect, and eliminate visual defects . The grating 4 may be a diamond grating 4, of course, it may also be a slit grating 4 or the like. The surface of the polarizing layer 204 facing the light-emitting layer 201 is provided with a recess 2041, and the grating 4 may be provided in the recess 2041, but the embodiment of the present disclosure does not specifically limit this.

The embodiment of the present disclosure also provides a flexible screen. As shown in FIGS. 2, 3, 8 and 9, the flexible screen may include a cover plate 6 and the flexible display substrate described in any of the above embodiments. The cover plate 6 includes a curved plate body 601 and a main plate body 602 connected to the curved plate body 601. The surface of the adhesive layer 5 in the flexible display substrate facing away from the display layer 2 is attached to the inner surface of the cover plate 6. Wherein, the part of the adhesive layer 5 corresponding to the first area 301 is attached to the inner surface of the cover plate 6 in the area of the curved plate body 601, and the part of the adhesive layer 5 corresponding to the second area 302 is attached to the cover plate. The inner surface of 6 is located in the area of the main board body 602. In addition, the structure shown in FIG. 8 also shows the aforementioned pressure sensor 7. Since the flexible display substrate included in the flexible screen of the embodiment of the present disclosure is the same as the flexible substrate in the above-mentioned embodiment, it has the same beneficial effects, which will not be repeated here.

As shown in FIGS. 8 and 9, the curvature of the main board body 602 is smaller than the curvature of the curved board body 601. For example, the curvature of the main board body 602 is zero, that is, the main board body 602 is a flat plate structure, for example, the main board body 602 is a rectangular plate. The curved plate 601 may be an arc-shaped plate. The arc of the arc-shaped plate body may be less than or equal to π. The arc-shaped plate body may include two arc-shaped sides arranged oppositely and a straight side connected between the two arc-shaped sides. Taking the main board body 602 as a rectangular plate as an example, the straight sides of the arc-shaped plate body are butted against the sides of the rectangular plate. Further, the arc-shaped plate body and the rectangular plate are smoothly transitioned and butted. In addition, the number of the arc-shaped plate bodies can be two, and they correspond to the two opposite sides of the rectangular plate one by one. The inner surface of the above-mentioned cover plate 6 is the surface of the cover plate 6 located inside the curved plate body 601. As shown in FIGS. 2 and 3, the part of the adhesive layer 5 corresponding to the second region 302 is attached to the above-mentioned main board body 602; the part of the adhesive layer 5 corresponding to the two first regions 301 corresponds to each other one to one. It is attached to the inner surface of the two arc-shaped plate bodies.

The embodiment of the present disclosure also provides a terminal device. The terminal device may include the flexible screen described in the foregoing embodiments. The terminal device may be a mobile phone. Of course, the terminal device may also be a tablet computer, but the present disclosure is not limited to this. The terminal device may also be a vehicle-mounted computer, a desktop computer, a smart TV, a wearable device, and the like. Since the flexible screen included in the terminal device of the embodiment of the present disclosure is the same as the flexible screen in the above-mentioned embodiment, it has the same beneficial effects, which will not be repeated here.

Those skilled in the art will easily think of other embodiments of the present disclosure after considering the description and practice. This application is intended to cover any variations, uses, or adaptive changes of the present disclosure, and these variations, uses, or adaptive changes follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field. The description and the embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

A flexible display substrate, characterized in that it comprises:

Flexible substrate

The display layer is arranged on one side of the flexible substrate. The surface of the display layer facing away from the flexible substrate is a light-emitting surface. The light-emitting surface includes a first region and a second region. The distance of the flexible substrate facing away from the surface of the display layer is smaller than the distance between the second area and the surface of the flexible substrate facing away from the display layer;

An adhesive layer covers the first area and the second area.
The flexible display substrate according to claim 1, wherein the orthographic projection of the light-emitting surface on the flexible substrate includes a straight edge, and the orthographic projection of the first region on the flexible substrate is a strip-shaped surface , The strip-shaped surface is parallel to the straight side.
4. The flexible display substrate according to claim 2, wherein the strip-shaped surface coincides with the straight edge.
The flexible display substrate according to claim 3, wherein the orthographic projection of the light-emitting surface on the flexible base comprises two straight sides arranged in parallel, and the number of the first regions is two and Distributed at intervals, the orthographic projection of one of the first regions on the flexible substrate coincides with one of the straight edges, and the orthographic projection of the other first region on the flexible substrate coincides with the other straight edges .
The flexible display substrate according to claim 1, wherein the display layer comprises:

The light-emitting layer is arranged on one side of the flexible substrate;

The polarizing layer is arranged on the side of the light-emitting layer away from the flexible substrate, and the surface of the polarizing layer facing away from the light-emitting layer is the light-emitting surface.
The flexible display substrate of claim 5, wherein the display layer comprises:

The grating is arranged on a side of the light-emitting layer away from the flexible substrate, and the orthographic projection of the grating on the flexible substrate is located in the orthographic projection area of the first area on the flexible substrate.
7. The flexible display substrate according to claim 6, wherein a surface of the polarizing layer facing the light-emitting layer is provided with a recess, and the grating is provided in the recess.
The flexible display substrate according to claim 6, wherein the grating is a diamond grating.
A flexible screen, characterized in that it comprises:

The cover plate includes a curved plate body and a main plate body connected to the curved plate body;

Flexible display substrate, including:

Flexible substrate

The display layer is arranged on one side of the flexible substrate. The surface of the display layer facing away from the flexible substrate is a light-emitting surface. The light-emitting surface includes a first region and a second region. The distance of the flexible substrate facing away from the surface of the display layer is smaller than the distance between the second area and the surface of the flexible substrate facing away from the display layer;

An adhesive layer covering the first area and the second area; the surface of the adhesive layer facing away from the display layer is attached to the inner surface of the cover plate, wherein the adhesive layer corresponds to The part of the first area is adhered to the inner surface of the cover plate in the area of the curved plate body, and the part of the adhesive layer corresponding to the second area is adhered to the inner surface of the cover plate The surface is located in the area of the main board body.
The flexible screen according to claim 9, wherein the orthographic projection of the light emitting surface on the flexible substrate includes a straight edge, and the orthographic projection of the first area on the flexible substrate is a strip-shaped surface, The strip-shaped surface is parallel to the straight side.
The flexible screen according to claim 10, wherein the strip-shaped surface coincides with the straight edge.
The flexible screen according to claim 11, wherein the orthographic projection of the light-emitting surface on the flexible substrate includes two straight sides arranged in parallel, and the number of the first regions is two and spaced apart. Distribution, the orthographic projection of one of the first regions on the flexible substrate coincides with one of the straight edges, and the orthographic projection of the other first region on the flexible substrate coincides with the other straight edges.
The flexible screen of claim 9, wherein the display layer comprises:

The light-emitting layer is arranged on one side of the flexible substrate;

The polarizing layer is arranged on the side of the light-emitting layer away from the flexible substrate, and the surface of the polarizing layer facing away from the light-emitting layer is the light-emitting surface.
The flexible screen according to claim 13, wherein the display layer comprises:

The grating is arranged on a side of the light-emitting layer away from the flexible substrate, and the orthographic projection of the grating on the flexible substrate is located in the orthographic projection area of the first area on the flexible substrate.
A terminal device, characterized in that it includes a flexible screen;

The flexible screen includes:

The cover plate includes a curved plate body and a main plate body connected to the curved plate body;

Flexible display substrate, including:

Flexible substrate

The display layer is arranged on one side of the flexible substrate. The surface of the display layer facing away from the flexible substrate is a light-emitting surface. The light-emitting surface includes a first region and a second region. The distance of the flexible substrate facing away from the surface of the display layer is smaller than the distance between the second area and the surface of the flexible substrate facing away from the display layer;

An adhesive layer covering the first area and the second area; the surface of the adhesive layer facing away from the display layer is attached to the inner surface of the cover plate, wherein the adhesive layer corresponds to The part of the first area is adhered to the inner surface of the cover plate in the area of the curved plate body, and the part of the adhesive layer corresponding to the second area is adhered to the inner surface of the cover plate The surface is located in the area of the main board body.
The terminal device according to claim 15, wherein the orthographic projection of the light-emitting surface on the flexible substrate includes a straight edge, and the orthographic projection of the first area on the flexible substrate is a strip-shaped surface, The strip-shaped surface is parallel to the straight side.
The terminal device according to claim 16, wherein the strip-shaped surface coincides with the straight edge.
The terminal device according to claim 17, wherein the orthographic projection of the light-emitting surface on the flexible substrate comprises two straight sides arranged in parallel, and the number of the first regions is two and spaced apart. Distribution, the orthographic projection of one of the first regions on the flexible substrate coincides with one of the straight edges, and the orthographic projection of the other first region on the flexible substrate coincides with the other straight edges.
The terminal device according to claim 15, wherein the display layer comprises:

The light-emitting layer is arranged on one side of the flexible substrate;

The polarizing layer is arranged on the side of the light-emitting layer away from the flexible substrate, and the surface of the polarizing layer facing away from the light-emitting layer is the light-emitting surface.
The terminal device according to claim 19, wherein the display layer comprises:

The grating is arranged on a side of the light-emitting layer away from the flexible substrate, and the orthographic projection of the grating on the flexible substrate is located in the orthographic projection area of the first area on the flexible substrate.