A foldable screen

Abstract

The present invention relates to the technical field of foldable screens, and in particular to a foldable screen. By respectively arranging a first folding layer and a second folding layer on opposite side surfaces of a device layer, an AMOLED layer is slidably connected to a track layer, thereby realizing bidirectional folding of the screen. By arranging the track layer, the display screen can make corresponding movements when being bent, thereby avoiding damage to the display screen due to tension caused by the bidirectional folding, thereby reducing the service life of the display screen. The present solution realizes that the screen can still display normally when being bidirectionally folded through the cooperation between the above-mentioned structures, and can effectively improve the screen-to-body ratio, which is more conducive to the application of flexible AMOLED display screens.

Description

Technical Field

[0001] The present invention relates to the technical field of foldable screens, and in particular to a foldable screen. Background Art

[0002] Smartphones are an indispensable communication tool in people's lives. With the development of the mobile phone market, a number of new design and structure mobile phones have emerged - foldable phones. Currently, foldable phones on the market are divided into two types: screen-folding type and screen-folding type, but both of them are mainly single-sided display. In order to increase the display area and screen-to-body ratio of foldable phones and increase the convenience of using foldable phones; therefore, it is particularly necessary to propose a new type of foldable screen. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a foldable screen capable of increasing the screen-to-body ratio.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A foldable screen comprises a device layer, wherein a first folding layer and a second folding layer are respectively arranged on two opposite sides of the device layer, and the first folding layer and the second folding layer have the same structure;

[0006] The first folding layer includes a stacked track layer and an AMOLED layer, the track layer is located between the device layer and the AMOLED layer, the track layer is fixedly connected to the device layer, the track layer is slidably connected to the AMOLED layer, the opposite ends of the AMOLED layer are fixedly connected with sliding shafts, the opposite ends of the device layer surface are provided with limit components, the limit components include two relatively arranged limit blocks, and the two limit blocks are provided with long strip-shaped sliding grooves for the sliding shaft to slide.

[0007] The beneficial effects of the present invention are:

[0008] By respectively arranging a first folding layer and a second folding layer on the opposite side surfaces of the device layer, the AMOLED layer is slidably connected to the track layer, so that the screen can be folded in both directions; by arranging the track layer, the display screen can make corresponding movements when being bent, so as to avoid the display screen being damaged by the tensile force due to the bidirectional folding, resulting in a reduction in the service life of the display screen; by arranging the AMOLED layer as the display screen of the foldable screen, a flexible display screen is adopted, so that the display can be maintained while being bent; by arranging limit blocks at the opposite ends of the surface of the device layer and opening a slide groove on the limit blocks, the sliding shaft moves in the slide groove when the screen is bent and ensures that the AMOLED layer will not separate from the track layer during the bending activity; this scheme realizes that the screen can still display normally when the screen is folded in both directions through the cooperation between the above-mentioned structures, and can effectively improve the screen-to-body ratio, which is more conducive to the application of flexible AMOLED display screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of a cross-sectional structure of a foldable screen according to the present invention when it is unfolded;

[0010] Figure 2 is a schematic structural diagram of a foldable screen according to the present invention when folded;

[0011] Figure 3 is a schematic structural diagram of a foldable screen according to the present invention when folded;

[0012] Figure 4 is a schematic diagram of a cross-sectional structure of a foldable screen according to the present invention when folded;

[0013] Figure 5 A schematic diagram of a partial structure of a foldable screen according to the present invention;

[0014] Figure 6 is a schematic diagram of a cross-sectional structure of a foldable screen according to the present invention when folded;

[0015] Figure 7 is a schematic diagram of a cross-sectional structure of a foldable screen according to the present invention when folded;

[0016] Description of labels:

[0017] 1. Device layer; 2. Track layer; 3. AMOLED layer; 4. Protective layer; 5. Sliding shaft; 6. Limit block. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0019] Please refer to Figure 1 , the technical solution provided by the present invention:

[0020] A foldable screen comprises a device layer, wherein a first folding layer and a second folding layer are respectively arranged on two opposite sides of the device layer, and the first folding layer and the second folding layer have the same structure;

[0021] The first folding layer includes a stacked track layer and an AMOLED layer, the track layer is located between the device layer and the AMOLED layer, the track layer is fixedly connected to the device layer, the track layer is slidably connected to the AMOLED layer, the opposite ends of the AMOLED layer are fixedly connected with sliding shafts, the opposite ends of the device layer surface are provided with limit components, the limit components include two relatively arranged limit blocks, and the two limit blocks are provided with long strip-shaped sliding grooves for the sliding shaft to slide.

[0022] From the above description, it can be seen that the beneficial effects of the present invention are:

[0023] By respectively arranging a first folding layer and a second folding layer on the opposite side surfaces of the device layer, the AMOLED layer is slidably connected to the track layer, so that the screen can be folded in both directions; by arranging the track layer, the display screen can make corresponding movements when being bent, so as to avoid the display screen being damaged by the tensile force due to the bidirectional folding, resulting in a reduction in the service life of the display screen; by arranging the AMOLED layer as the display screen of the foldable screen, a flexible display screen is adopted, so that the display can be maintained while being bent; by arranging limit blocks at the opposite ends of the surface of the device layer and opening a slide groove on the limit blocks, the sliding shaft moves in the slide groove when the screen is bent and ensures that the AMOLED layer will not separate from the track layer during the bending activity; this scheme realizes that the screen can still display normally when the screen is folded in both directions through the cooperation between the above-mentioned structures, and can effectively improve the screen-to-body ratio, which is more conducive to the application of flexible AMOLED display screens.

[0024] Furthermore, one end of the track layer is inserted into the limiting block to form a side wall of the slide groove.

[0025] From the above description, it can be seen that by inserting one end of the track layer into the limit block to form a side wall of the slide groove, it can ensure that the AMOLED layer slides on the track layer when the screen is bent, and at the same time, it can ensure that the AMOLED layer will not separate from the track layer when the screen is bent. This can improve the stability of the screen during the folding process, thereby further improving the screen-to-body ratio.

[0026] Furthermore, the slide grooves on the two limit blocks of the same limit assembly are arranged parallel to each other.

[0027] From the above description, it can be seen that the sliding grooves on the two limit blocks of the same limit assembly are arranged parallel to each other, which can improve the stability of the screen during the folding process, thereby further improving the screen-to-body ratio.

[0028] Furthermore, the folding screen is folded inward or outward along a folding center line, and the sliding axis is parallel to the folding center line;

[0029] The distances from the sliding shafts fixedly connected at two opposite ends of the AMOLED layer to the folding center are equal.

[0030] Furthermore, the first folding layer also includes a protective layer, which is arranged on a side of the AMOLED layer away from the track layer, and the protective layer is fixedly connected to the AMOLED layer.

[0031] From the above description, it can be seen that the protective layer is fixedly connected to the AMOLED layer to protect the AMOLED layer (display screen), which can reduce the damage to the AMOLED layer from the outside and reduce the damage to the screen due to bending, improve the stability of the screen during the folding process, thereby further increasing the screen-to-body ratio.

[0032] Furthermore, the thickness of the protective layer is 0.1-0.2 cm.

[0033] From the above description, it can be seen that setting the thickness of the protective layer to 0.1-0.2cm can reduce the damage of AMOLED to the outside world to a minimum, increase the degree of damage caused by screen bending, and thus improve the stability of the screen during the folding process.

[0034] Furthermore, the material of the protective layer is polyimide film.

[0035] From the above description, it can be seen that the polyimide film has high tensile strength, high temperature resistance, corrosion resistance and high transmittance. The material of the protective layer is polyimide film, which protects the AMOLED layer without affecting the display of the screen.

[0036] Furthermore, the track layer and the sliding shaft are both made of titanium-aluminum alloy.

[0037] From the above description, it can be seen that titanium-aluminum alloy is light in weight, high in mechanical strength, and resistant to high temperatures and corrosion. The track layer and the sliding shaft are both made of titanium-aluminum alloy, which can prevent the display screen from being damaged due to tension.

[0038] Please refer to Figures 1 to 7 , Embodiment 1 of the present invention is:

[0039] Please refer to Figures 1 to 5A foldable screen comprises a device layer 1, on two opposite sides of the device layer 1 are respectively provided a first folding layer and a second folding layer, the first folding layer and the second folding layer having the same structure;

[0040] The first folding layer includes a stacked track layer 2 and an AMOLED layer 3, the track layer 2 is located between the device layer 1 and the AMOLED layer 3, the track layer 2 is fixedly connected to the device layer 1, the track layer 2 is slidably connected to the AMOLED layer 3, the opposite ends of the AMOLED layer 3 are fixedly connected with sliding shafts 5, the opposite ends of the surface of the device layer 1 are provided with limiting components, the limiting components include two relatively arranged limiting blocks 6, and the two limiting blocks 6 are provided with long strip-shaped sliding grooves for the sliding shaft 5 to slide.

[0041] AMOLED is the abbreviation of Active-matrix Organic Light Emitting Diode. Its full Chinese name is active matrix organic light-emitting diode or active matrix organic light-emitting diode.

[0042] The material of the limiting block 6 is titanium-aluminum alloy.

[0043] One end of the track layer 2 is inserted into the limiting block 6 to form a side wall of the sliding groove.

[0044] The slide grooves on the two limiting blocks 6 of the same limiting assembly are arranged parallel to each other.

[0045] The folding screen is folded inward or outward along a folding center line, and the sliding axis 5 is parallel to the folding center line;

[0046] The distances between the sliding shafts 5 fixedly connected at opposite ends of the AMOLED layer 3 and the folding center are equal.

[0047] The AMOLED layer 3 is a display screen, which is a flexible display screen that can be bent while maintaining display.

[0048] The bending arc range of the foldable screen is 0-360 degrees.

[0049] The first folding layer further includes a protective layer 4 , which is disposed on a side of the AMOLED layer 3 away from the track layer 2 , and the protective layer 4 is fixedly connected to the AMOLED layer 3 .

[0050] The thickness of the protective layer 4 is 0.1-0.2 cm, preferably 0.15 cm.

[0051] The material of the protective layer 4 can be a flexible film material that can isolate water and oxygen, such as a polyimide film.

[0052] The track layer 2 and the sliding shaft 5 may be made of metal material or non-metal material with a certain hardness, such as titanium aluminum alloy.

[0053] Please refer to Figure 6 When the B side is folded inward and the A side is folded outward, the AMOLED layer 3 of the B side slides toward both ends along the track layer 2 of the B side (equivalent to extension), reducing the pressure on the bending area of ​​the B side due to the inward folding; the AMOLED layer 3 of the A side slides along the track layer 2 of the A side (equivalent to shrinkage), reducing the tension on the bending area of ​​the A side, thus achieving folding display in one direction.

[0054] Please refer to Figure 7 When the A side is folded inward and the B side is folded outward, the AMOLED layer 3 of the A side slides toward both ends along the track layer 2 of the A side (equivalent to shrinkage), reducing the pressure on the bending area of ​​the A side due to the inward folding; the AMOLED layer 3 of the B side slides along the track layer 2 of the B side (equivalent to extension), reducing the tension on the bending area of ​​the B side, thereby achieving folding display in another direction.

[0055] In summary, the present invention provides a foldable screen, which can realize bidirectional folding of the screen by respectively arranging a first folding layer and a second folding layer on the opposite side surfaces of the device layer, and the AMOLED layer is slidably connected to the track layer; by arranging the track layer, it is used to allow the display screen to perform corresponding actions when performing a bending activity, so as to avoid the display screen being damaged by the tensile force due to the bidirectional folding, thereby reducing the service life of the display screen; by arranging the AMOLED layer as the display screen of the foldable screen, a flexible display screen is adopted, which can maintain the display while bending; by arranging limit blocks at the opposite ends of the surface of the device layer and opening a slide groove on the limit blocks, the sliding shaft moves in the slide groove when the screen is bent and ensures that the AMOLED layer will not separate from the track layer during the bending activity; this scheme realizes that the screen can still display normally when the screen is bidirectionally folded through the cooperation between the above-mentioned structures, and can effectively improve the screen-to-body ratio, which is more conducive to the application of flexible AMOLED display screens.

[0056] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A foldable screen, characterized in that: It comprises a device layer, wherein a first folding layer and a second folding layer are respectively provided on two opposite sides of the device layer, and the first folding layer and the second folding layer have the same structure; The first folding layer comprises a track layer and an AMOLED layer which are stacked, the track layer is located between the device layer and the AMOLED layer, the track layer is fixedly connected to the device layer, the track layer is slidably connected to the AMOLED layer, opposite ends of the AMOLED layer are fixedly connected with a sliding shaft, opposite ends of the device layer surface are provided with a limiting assembly, the limiting assembly comprises two limiting blocks which are arranged oppositely, and the two limiting blocks are provided with a long strip-shaped sliding groove for the sliding shaft to slide; One end of the track layer is inserted into the limit block to form a side wall of the slide groove; The first folding layer further includes a protective layer, which is disposed on a side of the AMOLED layer away from the track layer, and the protective layer is fixedly connected to the AMOLED layer.

2. The foldable screen according to claim 1, characterized in that: The slide grooves on the two limiting blocks of the same limiting assembly are arranged parallel to each other.

3. The foldable screen according to claim 1, characterized in that: The foldable screen is folded inward or outward along a folding center line, and the sliding axis is parallel to the folding center line; The distances from the sliding shafts fixedly connected at two opposite ends of the AMOLED layer to the folding center are equal.

4. The foldable screen according to claim 1, characterized in that: The thickness of the protective layer is 0.1-0.2 cm.

5. The foldable screen according to claim 1, characterized in that: The material of the protective layer is polyimide film.

6. The foldable screen according to claim 1, characterized in that: The track layer and the sliding shaft are both made of titanium-aluminum alloy.

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