CN118116281A

CN118116281A - Folding display terminal

Info

Publication number: CN118116281A
Application number: CN202211528566.2A
Authority: CN
Inventors: 李灵芝
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2024-05-31
Also published as: WO2024114235A9; WO2024114235A1

Abstract

The embodiment of the application discloses a folding display terminal, which relates to the technical field of display and is used for reducing the size of a frame and increasing the screen occupation ratio. The folding display terminal includes: flexible display screen, center, protection film, preceding shell. The flexible display screen comprises a plurality of first display parts and at least one second display part, wherein the first display parts are sequentially arranged along a first direction, the second display part is positioned between two adjacent first display parts, the second display part can be bent, and the bent axis is along a second direction. The first direction and the second direction are perpendicular. The flexible display screen is located in the middle frame. The middle frame comprises a first frame and a second frame which are arranged along a first direction and are oppositely arranged. The protective film is positioned on the flexible display screen. The front shell is arranged at least along the first frame and the second frame and is connected with the first frame and the second frame. The front shell extends to the upper side of the protective film from the middle frame and covers the flexible display screen and part of the edge of the protective film. The folding display terminal is used for displaying images.

Description

Folding display terminal

Technical Field

The embodiment of the application relates to the technical field of display, in particular to a folding display terminal.

Background

Along with the continuous development of display technology, a folding display terminal gradually becomes a development trend of future mobile electronic products. Under the unfolding state, the folding display terminal can obtain a larger display area, and the film watching effect is improved. The folding display terminal can obtain smaller volume under the folding state, and is convenient for users to carry.

Because bonding is generally achieved between different layers of the folding display terminal through adhesive layers, a staggered layer phenomenon can occur in the folding process of the folding display terminal. In addition, the fixing manner between the flexible display screen and the middle frame in the folding of the folding display terminal is different from that of the conventional display terminal, and based on the staggered phenomenon, the cover plate of the flexible display screen and the middle frame in the folding display terminal cannot be completely fixed, so that a staggered space needs to be reserved between the flexible display screen and the middle frame, and a gap exists between the flexible display screen and the middle frame. Currently, the above-mentioned slit is shielded by providing a front case (which may also be called a small a case) on the front surface of the folding display terminal.

But this increases the size of the frame of the folding display terminal and decreases the screen ratio of the folding display terminal.

Disclosure of Invention

The embodiment of the application provides a folding display terminal which is used for reducing the frame size of the folding display terminal and increasing the screen occupation ratio of the folding display terminal.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:

In a first aspect, there is provided a folding display terminal including: flexible display screen, center, protection film, preceding shell. The flexible display screen comprises a plurality of first display parts and at least one second display part, wherein the first display parts are sequentially arranged along a first direction, the second display part is positioned between two adjacent first display parts, the second display part can be bent, and the bent axis is along a second direction. The first direction and the second direction are perpendicular. The flexible display screen is located in the middle frame. The middle frame comprises a first frame and a second frame which are arranged along a first direction and are oppositely arranged. The protective film is positioned on the flexible display screen. The front shell is arranged at least along the first frame and the second frame and is connected with the first frame and the second frame. The front shell extends to the upper side of the protective film from the middle frame and covers the flexible display screen and part of the edge of the protective film.

According to the folding display terminal provided by some embodiments of the present application, by arranging the front shell and connecting the front shell with the first frame and the second frame of the middle frame, the front shell can cover part of edges of the flexible display screen and the protective film located in the middle frame, and the part of edges correspond to positions of the first frame and the second frame, so that gaps at positions of the first frame 211 and the second frame 221 can be shielded by using the front shell, the aesthetic property of the folding display terminal can be improved, and different stacking structures (such as flexible display screens) in the middle frame can be limited by using the front shell and the middle frame, so that the folding display terminal can be prevented from bouncing out of the middle frame 2 in a limit scene (such as falling, etc.), and the reliability of the folding display terminal can be improved.

In addition, the embodiment of the application enables the front shell to cover part of the edge of the protective film by expanding the protective film outside to the lower part of the front shell, so that the avoidance size between the protective film and the front shell is not required to be designed when the folding display terminal is designed, the interval between the front shell 6 and the display area A is reduced, the frame size of the folding display terminal is effectively reduced, the area of the display area is increased, and the screen occupation ratio of the folding display terminal is improved.

In a possible implementation manner of the first aspect, the folding display terminal further includes: and the front shell is connected with the middle frame through the bonding layer. Or, the folding display terminal further includes: the front shell is connected with the middle frame through the connecting piece. The mode of adopting the adhesive linkage to realize the connection of the front shell and the middle frame is simpler, easy to realize and lower in cost. The front shell and the middle frame are connected in a detachable mode by adopting the connecting piece, so that the front shell is convenient to detach and the protective film is convenient to replace.

In a possible implementation manner of the first aspect, the middle frame further includes a third frame and a fourth frame that are arranged along the second direction and are disposed opposite to each other. The front shell is also arranged along at least one of the third frame and the fourth frame and is connected with the third frame and the fourth frame. Therefore, the front shell can be used for forming complete coverage on the edges of the flexible display screen and the protective film, and the attractiveness of the folding display terminal is improved.

In a possible implementation manner of the first aspect, the middle box further includes: and a bearing plate. The bearing plate is provided with a bearing surface, and the flexible display screen is positioned on the bearing surface. The first frame, the second frame, the third frame and the fourth frame are connected with the bearing plate and are arranged around the flexible display screen. This facilitates the carrying and protection of the flexible display.

In a possible implementation manner of the first aspect, the front shell includes: a protection part and a support part. The protective part covers part of the edges of the flexible display screen and the protective film. The supporting part is connected between the protecting part and the middle frame. The front shell is formed by the protection part and the support part, so that connection between the front shell and the middle frame is facilitated, and coverage of edges of the flexible display screen and the protective film is facilitated.

In a possible implementation manner of the first aspect, the folding display terminal further includes: and an elastic member disposed on the protective film. The front case covers the elastic member. Through setting up elastomeric element, not only can improve the leakproofness, can also separate flexible display screen and preceding shell, avoid flexible display screen and preceding shell direct contact to protect flexible display screen better.

In a possible implementation manner of the first aspect, a distance between the protective film and the first frame is greater than a distance between the flexible display screen and the first frame along the first direction. And/or, along the first direction, the distance between the protective film and the second frame is larger than the distance between the flexible display screen and the second frame. By adopting the arrangement mode, the first frame and/or the second frame of the middle frame can be effectively prevented from being collided by the protective film due to staggered layers, and the reliability of the folding display terminal is improved.

In a possible implementation manner of the first aspect, the flexible display screen has a display area and a border area surrounding the display area. The border region includes at least one fan-out region. The display area comprises a first sub-display area corresponding to the first display part and a second sub-display area corresponding to the second display part. Along the second direction, the fan-out area is located at one side of the first sub-display area. Therefore, the sizes of the lower frames of the flexible display screen and the folding display terminal can be reduced, the sizes of the left frame and the right frame are prevented from being increased, the symmetry and the screen ratio of the four frames of the folding display terminal are improved, and the reliability of the flexible display screen and the folding display terminal can be improved.

In a possible implementation manner of the first aspect, the flexible display screen includes: a plurality of data lines, a plurality of gate lines, and a plurality of fanout lines. The plurality of data lines and the plurality of gate lines are located in the display area, the plurality of data lines extend along a first direction, and the plurality of gate lines extend along a second direction. The fanout line is electrically connected with the data line. The frame area comprises a first sub-frame area and a second sub-frame area which extend along a first direction and are oppositely arranged, and a third sub-frame area and a fourth sub-frame area which extend along a second direction and are oppositely arranged. The fan-out line is led out from the third sub-frame area or the fourth sub-frame area, passes through the first sub-frame area or the second sub-frame area and extends to the fan-out area. The resistances of the plurality of fanout lines are the same. By setting the resistances of the different fan-out lines to be the same, the uniformity of the impedance of the different fan-out lines can be improved, and the uniformity of the graph displayed by the flexible display screen can be further improved.

In a possible implementation manner of the first aspect, the first display portion includes a main body portion, a bending portion connected to the main body portion, and a circuit connection portion connected to the bending portion. The main body part has opposite light-emitting side and non-light-emitting side, and the kink is buckled to the non-light-emitting side, and circuit connection portion is located non-light-emitting side. The folding display terminal further includes: the back cover comprises a spacer component, a first back film, a supporting sheet, a second back film and a filling part. The spacer member is located between the main body portion and the circuit connection portion. The first backing film is positioned between the body portion and the spacer member. The support sheet is located between the first backing film and the spacer member. The second back film is located between the circuit connection portion and the spacer member. The filling part is positioned in a gap surrounded by the side surfaces of the spacer component, the first back film, the supporting sheet and the second back film and the bending part. The filling part can fill the gap and form a support for the bending part. The strength of the partial area corresponding to the gap in the folding display terminal is enhanced, the capability of the partial area against external stress is enhanced, the damage to the structure of the partial area caused by the deformation of the front shell is avoided, and the reliability of the folding display terminal can be enhanced. On the basis, when the frame size of the folding display terminal is smaller, the situation that the frame size has to be increased due to the design consideration of reliability can be avoided.

In a possible implementation manner of the first aspect, the filling portion extends along an intersection line of the bending portion and the main body portion. And/or, along the extending direction of the intersection line of the bending part and the main body part, the size of the filling part is equal to the size of the bending part. Therefore, the overlapping area of the filling part and the bending part can be effectively increased, and the protection effect of the filling part on the folding display terminal is increased.

In a second aspect, there is provided a folding display terminal including: a flexible display screen. The flexible display screen comprises a plurality of first display parts and at least one second display part, wherein the first display parts are sequentially arranged along a first direction, the second display part is positioned between two adjacent first display parts, the second display part can be bent, and the bent axis is along a second direction. The first direction and the second direction are perpendicular. The flexible display screen has a display area and a border area surrounding the display area, the border area including at least one fan-out area. The display area comprises a first sub-display area corresponding to the first display part and a second sub-display area corresponding to the second display part. Along the second direction, the fan-out area is located at one side of the first sub-display area.

Therefore, the sizes of the lower frames of the flexible display screen and the folding display terminal can be reduced, the sizes of the left frame and the right frame are prevented from being increased, the symmetry and the screen ratio of the four frames of the folding display terminal are improved, and the reliability of the flexible display screen and the folding display terminal can be improved.

In a possible implementation manner of the second aspect, the flexible display screen includes: a plurality of data lines, a plurality of gate lines, and a plurality of fanout lines. The plurality of data lines and the plurality of gate lines are located in the display area, the plurality of data lines extend along a first direction, and the plurality of gate lines extend along a second direction. The fanout line is electrically connected with the data line. The frame area comprises a first sub-frame area and a second sub-frame area which extend along a first direction and are oppositely arranged, and a third sub-frame area and a fourth sub-frame area which extend along a second direction and are oppositely arranged. The fan-out line is led out from the third sub-frame area or the fourth sub-frame area, passes through the first sub-frame area or the second sub-frame area and extends to the fan-out area. The resistances of the plurality of fanout lines are the same. By setting the resistances of the different fan-out lines to be the same, the uniformity of the impedance of the different fan-out lines can be improved, and the uniformity of the graph displayed by the flexible display screen can be further improved.

In a third aspect, there is provided a folding display terminal including: the flexible display screen, the spacer component, the first back film, the supporting sheet, the second back film and the filling part. The flexible display screen includes a main body portion, at least one bending portion connected to the main body portion, and a circuit connection portion connected to the bending portion. The flexible display screen is provided with a light-emitting side and a non-light-emitting side which are opposite, the bending part bends towards the non-light-emitting side of the flexible display screen, and the circuit connecting part is positioned on the non-light-emitting side of the flexible display screen. The spacer member is located between the main body portion and the circuit connection portion. The first backing film is positioned between the body portion and the spacer member. The support sheet is located between the first backing film and the spacer member. The second back film is located between the circuit connection portion and the spacer member. The filling part is positioned in a gap surrounded by the side surfaces of the spacer component, the first back film, the supporting sheet and the second back film and the bending part.

The circuit connection part is bent to the non-light-emitting side, so that the frame size (namely the black edge size) of the flexible display screen and the folding display terminal is reduced, and the screen occupation ratio is improved. By arranging the filling part in the gap, the strength of a part area corresponding to the gap in the folding display terminal is enhanced, the capability of the part area against external stress is enhanced, the damage to the structure of the part area caused by the deformation of the front shell is avoided, and the reliability of the folding display terminal can be enhanced. On the basis, when the frame size of the folding display terminal is smaller, the situation that the frame size has to be increased due to the design consideration of reliability can be avoided.

In a possible implementation manner of the third aspect, the filling portion extends along an intersection line of the bending portion and the main body portion. And/or, along the extending direction of the intersection line of the bending part and the main body part, the size of the filling part is equal to the size of the bending part. Therefore, the overlapping area of the filling part and the bending part can be effectively increased, and the protection effect of the filling part on the folding display terminal is increased.

Drawings

Fig. 1 is a schematic structural diagram of a folding display terminal in a flattened state according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a foldable display terminal in an intermediate state according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a folding display terminal in a folded state according to an embodiment of the present application;

fig. 4 is a schematic diagram of a disassembled structure of a foldable display terminal according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a foldable display terminal according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of another folding display terminal according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of still another folding display terminal according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of still another folding display terminal according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of still another foldable display terminal according to an embodiment of the present application;

fig. 18 is a schematic structural diagram of still another folding display terminal according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of a further foldable display terminal according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments obtained by a person skilled in the art based on the embodiments provided by the present application fall within the scope of protection of the present application.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In describing some embodiments, the expression "connected" and its derivatives may be used. The term "coupled" is to be interpreted broadly, as referring to, for example, a fixed connection, a removable connection, or a combination thereof; can be directly connected or indirectly connected through an intermediate medium.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In addition, the use of "based on" is intended to be open and inclusive in that a process, step, calculation, or other action "based on" one or more of the stated conditions or values may be based on additional conditions or beyond the stated values in practice.

As used in embodiments of the present application, "about," "approximately" or "approximately" includes the values stated as well as average values within an acceptable deviation range of the particular values as determined by one of ordinary skill in the art in view of the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system).

As used in embodiments of the present application, "parallel", "perpendicular", "equal" include the stated case as well as the case that is similar to the stated case, the range of which is within an acceptable deviation range as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, "parallel" includes absolute parallel and approximately parallel, where the acceptable deviation range for approximately parallel may be, for example, a deviation within 5 °; "vertical" includes absolute vertical and near vertical, where the acceptable deviation range for near vertical may also be deviations within 5 °, for example. "equal" includes absolute equal and approximately equal, where the difference between the two, which may be equal, for example, is less than or equal to 5% of either of them within an acceptable deviation of approximately equal.

The present embodiments describe exemplary implementations with reference to cross-sectional and/or plan views as idealized exemplary figures. In the drawings, the area of the region is exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments.

Furthermore, in embodiments of the present application, the terms "upper," "lower," "left," "right," and the like may be defined by, but are not limited to, orientations relative to the component illustrated in the figures, it being understood that the directional terms may be used for relative description and clarity, and may be modified accordingly in response to changes in the orientation of the component illustrated in the figures.

The application provides a folding display terminal. The folding display terminal includes, but is not limited to, a notebook (notebook), a tablet (tablet personal computer), a mobile phone, a laptop (PDA), a personal digital assistant (personal DIGITAL ASSISTANT), a personal computer, a navigator, a vehicle-mounted device, a wearable device (e.g., a smart watch), an augmented Reality (Augmented Reality, AR) device, a Virtual Reality (VR) device, and any other products or parts having a display function. The embodiment of the application does not limit the specific form of the folding display terminal.

For example, the above-described folding display terminal may include a flexible display screen (or a folding screen) and various electronic devices that can change the unfolding or folding form of the flexible display screen and itself. Under different use demands, the folding display terminal can be unfolded to a flattened state, can also be folded to a folded state and can also be in an intermediate state between the flattened state and the folded state. That is, the folding display terminal has at least two states, i.e., a flattened state and a folded state. In some cases, the folded display terminal may further include a third state, i.e., an intermediate state between the flattened state and the folded state. It will be appreciated that the intermediate state may be any one or more of the states of the folded display terminal between the flattened state and the folded state, rather than the only state.

For convenience of explanation, the following embodiments are exemplified by taking a folding display terminal as a mobile phone, which cannot be considered as a specific limitation of the structural configuration of the folding display terminal. Fig. 1 to 3 are block diagrams of a foldable display terminal (i.e., a mobile phone) according to some embodiments of the present application. Fig. 1 is a structural diagram of a folded display terminal in a flattened state, fig. 2 is a structural diagram of the folded display terminal in an intermediate state, and fig. 3 is a structural diagram of the folded display terminal in a folded state.

In some examples, as shown in fig. 1-3, a folding display terminal 100 includes a flexible display screen 1.

The flexible display 1 has a display area a and a frame area B surrounding the display area a. The portion of the flexible display screen 1 located in the display area a is used for image display. The flexible display 1 is of various types and can be selected according to actual needs. By way of example, the flexible display 1 may be an Organic LIGHT EMITTING Diode (OLED) display. The OLED display screen, as a self-luminous display screen, does not need to provide a backlight module (back light module, BLM), is advantageous in reducing the thickness and structural complexity of the folding display terminal 100.

Alternatively, the OLED display may be an Active Matrix Organic Light Emitting Diode (AMOLED) display.

Illustratively, the above-described flexible display screen 1 includes a display panel (may also be referred to as a panel) 11 and a cover plate (may also be referred to as a cover) 12 located on the display panel 11. The display panel 11 includes a substrate and a film stack structure (including but not limited to a pixel circuit, a light emitting device, a shift register, etc.) disposed on the substrate. The substrate may be made of a flexible resin material including, but not limited to, polyethylene terephthalate (polyethylene terephthalate, PET), and the cover plate 12 may be made of a transparent, flexible material including, but not limited to, polyimide. This may allow the substrate and cover plate 12 to be bendable, thereby allowing the flexible display screen 1 to have bendable properties. The flexible display screen 1 may be unfolded or folded in response to the folding of the folding display terminal 100.

It is understood that the folding display terminal 100 may be divided into an inner folding device and an outer folding device according to the folding direction of the flexible display screen 1. Wherein the inner folding apparatus means that the flexible display screen 1 is positioned inside the folding display terminal 100 when the folding display terminal 100 is in a folded state, and an image displayed by the flexible display screen 1 cannot be viewed by a user; when the folding display terminal 100 is in the flattened state, the flexible display screen 1 is exposed, and an image displayed by the same can be viewed by a user. The external folding apparatus means that the flexible display screen 1 is located at the outside of the folding display terminal 100 when the folding display terminal 100 is in a folded state, and can be viewed by a user of an image displayed thereby.

The flexible display 1 includes a plurality of first display portions 1a, and each of the first display portions 1a may have a planar shape or a flat plate shape. The plurality of first display portions 1a are arranged in order along the first direction Y, for example. The flexible display 1 further comprises at least one second display portion 1b, each second display portion 1b being for example in the form of a bar. The second display portion 1b may be located between two adjacent first display portions 1a, and the second display portion 1b and the two adjacent first display portions 1a are connected and are in an integral structure. Wherein the second display portion 1b is bendable.

Alternatively, during the folding of the folding display terminal 100, the second display portion 1b may be bent, the first display portion 1a may not be substantially bent, and the first display portion 1a may be rotated about the second display portion 1b connected thereto. When the folding display terminal 100 is in the flattened state, the flexible display screen 1 is also in the flattened state. The first display portion 1a and the second display portion 1b may be alternately arranged in order along the first direction Y.

The number of the first display portions 1a and the number of the second display portions 1b may be determined according to the number of folds of the folding display terminal 100. For example, the folding display terminal 100 is folded only once, and accordingly, the number of the first display parts 1a may be two and the number of the second display parts 1b may be one. As another example, the folding display terminal 100 may be folded twice, and accordingly, the number of the first display parts 1a may be three and the number of the second display parts 1b may be two.

Illustratively, as shown in fig. 1, the flexible display screen 1 includes two first display portions 1a and one second display portion 1b. The second display portion 1b is located between the two first display portions 1 a. As shown in fig. 1, the first display portions 1a and the second display portions 1b may be alternately arranged in order along the first direction Y, and the second display portions 1b may extend along the second direction X, and accordingly, the bent axis of the second display portion 1b is along the second direction X. As shown in fig. 2, both the first display portions 1a can be rotated about the second display portion 1b, so that the flexible display screen 1 and the folding display terminal 100 can be folded or unfolded. The first direction Y and the second direction X are parallel to the plane where the flexible display screen 1 is located, and the first direction Y and the second direction X are perpendicular.

In this case, if the folding display terminal 100 is an internal folding device, the folding display terminal 100 can be folded toward the side on which the front face of the flexible display screen 1 (i.e., the face on which an image can be displayed) is located. If the folding display terminal 100 is an external folding device, the folding display terminal 100 can be folded toward the side where the back surface of the flexible display screen 1 is located.

In addition, the folding display terminal 100 may be configured to be folded up and down, or may be configured to be folded left and right. These are all within the scope of the present application.

The drawings of the embodiment of the present application illustrate a folding display terminal 100 as an internal folding device, and the flexible display screen 1 includes two first display portions 1a and one second display portion 1b, and the folding display terminal 100 is illustrated by taking an up-and-down folding design as an example, but this should not be construed as a specific limitation on the structural configuration of the folding display terminal.

In some examples, as shown in fig. 4 and 5, the folding display terminal 100 further includes a middle frame 2. The flexible display screen 1 is located within the middle frame 2. The middle frame 2 is used for carrying the flexible display screen 1 and protecting the flexible display screen 1.

The front side of the flexible display screen 1 is capable of displaying images. The flexible display 1 has a light-emitting side and a non-light-emitting side. The light-emitting side refers to a side of the flexible display screen 1 capable of displaying an image, that is, a side of the front surface of the flexible display screen 1. The non-light-emitting side refers to the side of the flexible display screen 1 opposite to the light-emitting side, that is, the side on which the back surface of the flexible display screen 1 is located.

Illustratively, as shown in fig. 4, the middle frame 2 includes a first sub-middle frame 21, a second sub-middle frame 22, and a rotating member 23 located between the first sub-middle frame 21 and the second sub-middle frame 22. The rotation member 23 is connected to the first sub-frame 21 and the second sub-frame 22, respectively, and the first sub-frame 21 and the second sub-frame 22 are rotatable about the rotation member 23, respectively. The first sub-frame 21 and the second sub-frame 22 are disposed opposite to the first display part 1a, and the rotating member 23 is disposed opposite to the second display part 1 b. Here, "opposed arrangement" means that the first sub-middle frame 21 or the second sub-middle frame 22 is arranged to be laminated with one first display section 1a in a direction perpendicular to the reference plane, and the rotating member 23 is arranged to be laminated with the second display section 1 b; on the reference plane, the first sub-middle frame 21 or the second sub-middle frame 22 overlaps with the orthographic projection of one first display section 1a, and the rotating member 23 overlaps with the orthographic projection of the second display section 1 b. The reference plane is a plane in which the flexible display screen 1 is located when the folding display terminal 100 is in a flattened state.

During the process of folding the display terminal 100, the first sub-middle frame 21 and the second sub-middle frame 22 rotate around the rotation member 23, respectively, and the first sub-middle frame 21 and the second sub-middle frame 22 drive the first display portion 1a to rotate around the second display portion 1 b.

Alternatively, as shown in fig. 4, the middle frame 2 includes a carrying board 2a, the carrying board 2a has a carrying surface, and the flexible display screen 1 is located on the carrying surface. The middle frame 2 further includes a first frame 211 and a second frame 221, and the first frame 211 and the second frame 221 are arranged along the first direction Y and are disposed opposite to each other. For example, the first bezel 211 extends in the second direction X and is opposite to one side of the flexible display screen 1, and the second bezel 221 extends in the second direction X and is opposite to a portion of one side of the flexible display screen 1. The middle frame 2 further includes a third frame 2b and a fourth frame 2c, and the third frame 2b and the fourth frame 2c are arranged along the second direction X and are disposed opposite to each other. For example, the third frame 2b extends in the first direction Y and is opposite to one side of the flexible display screen 1, and the fourth frame 2c extends in the first direction Y and is opposite to one side of the flexible display screen 1. For example, the first frame 211, the second frame 221, the third frame 2b, and the fourth frame 2c are connected to the carrier plate 2a, and disposed around the flexible display screen 1.

Since the first sub-middle frame 21 and the second sub-middle frame 22 need to rotate around the rotation members 23, respectively, the loading plate 2a may be divided into two parts, the third middle frame 2b may be divided into two parts, and the fourth middle frame 2c may be divided into two parts. The carrier plate 2a includes a first sub-plate 212 and a second sub-plate 222, and the first sub-plate 212 and the second sub-plate 222 are respectively connected with the rotating member 23. The third sub-frame 2b includes a first sub-frame 213 and a second sub-frame 223, and the fourth sub-frame 2c includes a third sub-frame 214 and a fourth sub-frame 224. The first sub-frame 213, the first frame 211, and the third sub-frame 214 are sequentially connected to the first sub-board 212, and the second sub-frame 223, the second frame 221, and the fourth sub-frame 224 are sequentially connected to the second sub-board 222.

Optionally, the foldable display terminal 100 further includes a rear cover located on a side of the middle frame 2 away from the flexible display screen 1, and electronic devices such as a circuit board, a camera, and a battery located between the middle frame 2 and the rear cover.

In some examples, as shown in fig. 5-7, the folded display terminal 100 further includes a back film (also may be referred to as a support film) 3 and a support sheet (also may be referred to as a bamboo book) 4 located on the non-light-emitting side of the flexible display screen 1. The back film 3 is located between the flexible display screen 1 and the middle frame 2, and the support sheet 4 is located between the back film 3 and the middle frame 2.

The back film 3 can be attached to the substrate of the flexible display screen 1 through an adhesive layer, so that the whole flexible display screen 1 is supported and protected. The back film 3 may be made of a transparent and flexible material, and the material of the back film 3 includes, but is not limited to, PET, polyimide (PI), and the like. This can provide the back film 3 with flexibility, and the back film 3 can be folded in response to the folding of the folding display terminal 100.

The support sheet 4 can be attached to the back film 3 by an adhesive layer. Illustratively, the support sheet 4 has good toughness. The support sheet 4 may be unfolded or folded in response to the unfolding or folding of the folding display terminal 100. The support sheet 4 has good rigidity. The support sheet 4 can support the flexible display screen 1 and maintain the form of the flexible display screen 1. For example, when the flexible display screen 1 is in the flattened state, the folded state, or the intermediate state, the support sheet 4 can maintain the flexible display screen in the flattened state, the folded state, or the intermediate state, avoiding a change in the state of the flexible display screen. The material of the support sheet 4 includes, for example, a metal material. Alternatively, the metallic material may include stainless steel, titanium alloy, or the like. Of course, the material of the supporting sheet 4 may also include other materials with certain toughness and rigidity, so as to form good support and protection for the flexible display screen 1, and improve the impact resistance effect of the flexible display screen 1 and the folding display terminal 100.

In some examples, as shown in fig. 5 to 7, the folding display terminal 100 further includes a protective film 5 on the flexible display screen 1. In the case where the folding display terminal 100 includes the cover plate 12, the protective film 5 is located on the side of the cover plate 12 away from the flexible display screen 1.

The protective film 5 covers at least the display area a of the flexible display screen 1, i.e. the protective film 5 may cover both the display area a of the flexible display screen 1 and further the border area B of the flexible display screen 1. Thus, the flexible display screen 1 can be protected by the protective film 5, the reliability of the whole folding display terminal 100 can be improved, and the display effect of the folding display terminal 100 can be prevented from being influenced.

Fig. 5 to 7 respectively illustrate a sectional view of the folding display terminal 100, in which the folding display terminal 100 of fig. 5 is in a flattened state, the folding display terminal 100 of fig. 7 is in a folded state, and the folding display terminal 100 of fig. 6 is in an intermediate state.

In the process of folding the folded display terminal 100, the thickness accumulation and bending radius of the stacked structures such as the protective film 5, the flexible display screen 1, the back film 3, the supporting sheet 4, and the like are different, and the stacked structures are bonded by the adhesive layer, as can be seen from fig. 5 to fig. 7, as the folding angle of the folded display terminal 100 is reduced, a staggered phenomenon occurs between the stacked structures (for example, the edge of the protective film 5 is closer to the middle frame 2, the edge of the flexible display screen 1 exceeds the edge of the supporting sheet 4, and the edge of the cover plate 12 in the flexible display screen 1 exceeds the edge of the display panel 11), and the staggered phenomenon appears at the positions of the first frame 211 and the second frame 221 of the middle frame 2. For the folding display terminal 100 of the up-down folding design, the staggered layer phenomenon appears at both upper and lower ends of the folding display terminal 100. Based on the staggered layer phenomenon, the different stacking structures and the middle frame cannot be completely fixed, a staggered layer space needs to be reserved between the different stacking structures and the middle frame, and correspondingly, as shown in fig. 5-7, gaps exist between the different stacking structures and the middle frame.

In some examples of the present application, as shown in fig. 5 to 8, the folding display terminal 100 further includes a front case 6. The front case 6 is disposed along at least the first and second frames 211 and 221, and is connected to the first and second frames 211 and 221. The front case 6 extends from the center 2 to above the flexible display screen 1, covering a part of the edge of the flexible display screen 1.

Optionally, the front case 6 includes at least a first sub-case 61 and a second sub-case 62. The first sub-housing 61 is disposed along the first frame 211 (i.e., extends along the second direction X) and is connected to the first frame 211. The first sub-case 61 extends from the first frame 211 to above the flexible display screen 1, covering a portion of the edge of the flexible display screen 1. The second sub-case 62 is disposed along the second bezel 221 (i.e., extends in the second direction X) and is connected to the second bezel 221. The second sub-case 62 extends from the second bezel 221 to above the flexible display screen 1, covering a portion of the edge of the flexible display screen 1.

By providing the front case 6, not only the slit can be blocked, but also the edge of the flexible display screen 1 can be pressed by the front case 6, and when the foldable display terminal 100 is in a limited scene (e.g., falls, etc.), the structure (e.g., the flexible display screen 1, the support plate 4, etc.) in the middle frame 2 is prevented from bouncing out (can also be understood as bouncing out, separating, etc.) of the middle frame 2, so that the structure in the middle frame 2 can be ensured to be more stably located in the space defined by the middle frame 2 and the front case 6.

In one possible embodiment, the protective film 5 is applied at the end of the complete machine assembly. That is, after the front case 6 is assembled, the protective film 5 is attached to the flexible display panel 1. Therefore, there is a certain interval between the protective film 5 and the front case 6.

It will be appreciated that, due to the different stacking structures in the folded display terminal 100, a staggered layer may occur along with the folding of the folded display terminal 100, and thus, the stacking structures need to be avoided, for example, the space between the middle frame 2 (such as the first frame 211 and the second frame 221) and the protective film 5, the flexible display screen 1, the back film 3, the supporting sheet 4, etc. is increased, and the width of the gap is increased, which may result in that the frame size (which may also be referred to as a black edge size) of the folded display terminal 100 is relatively large. As the size of the folding display terminal 100 is reduced (particularly, the small-sized folding display terminal 100), the larger the staggered amount is, the larger the avoiding space is required, and accordingly, the larger the frame size is. Moreover, even if the bezel capability of the display module is improved, in order to ensure that the front case 6 can press the flexible display screen 1 downward, preventing it from bouncing out when the folding display terminal 100 is in a limited scene (e.g., dropped, etc.), it is necessary to make the folding display terminal 100 have a large bezel size.

The frame size of the folding display terminal 100 is mainly composed of five sizes in fig. 5. The dimension ① represents the interval between the edge of the protective film 5 and the boundary of the display area a, and the dimension needs to be greater than 0 on the premise of attaching tolerance so as not to affect the display effect. Dimension ② represents the spacing between the protective film 5 and the front case 6, which, on the basis of assembly tolerances, can avoid bouncing and/or the dislodging of the rear protective film 5 against the front case 6 (wherein, in parallel to the second direction X, the dimension can avoid bouncing and the dislodging of the rear protective film 5 against the front case 6; in parallel to the first direction Y, the dimension can avoid bouncing or the dislodging of the rear protective film 5 against the front case 6). Here, since the protective film 5 is located at the uppermost layer, the dislocation amount of the protective film 5 is the largest, and the dimension ② is mainly used for avoiding the dislocation of the protective film 5. Dimension ③ represents the dimension of the front cover 6 covering the flexible display 1, which, on the basis of assembly tolerances, ensures that the front cover 6 is still able to press against the flexible display 1 after the flexible display 1 has been displaced. Dimension ④ represents a staggered layer avoidance dimension. Dimension ⑤ represents the wall thickness of the center 2 (e.g., the thickness of the second bezel 221).

In some examples of the present application, as shown in fig. 8 and 9, the front case 6 covers part of the edges of the flexible display screen 1 and the protective film 5. The front case 6 presses the edge of the protective film 5 under in addition to the edge of the flexible display screen 1. Accordingly, in the embodiment of the present application, when assembling the folding display terminal 100, the protective film 5 may be attached to the flexible display screen 1 first, and then the front case 6 may be assembled.

Optionally, the protective film 5 is designed in a flaring manner, and accordingly, the area of the protective film 5 is increased, and the area of the protective film 5 covering the flexible display screen 1 is increased. At this time, the frame size of the foldable display terminal 100 in the embodiment of the present application is mainly composed of four sizes in fig. 9, that is, size ①', size ③, size ④, and size ⑤. In this example, the meanings represented by the dimension ③, the dimension ④, and the dimension ⑤ are the same as those in some embodiments described above, and will not be described here again; the dimension ① 'is a space between the front case 6 and the boundary of the display area a, and a space requirement between the front case 6 and the boundary of the display area a is lower than a space requirement between the edge of the protective film 5 and the boundary of the display area a, and thus, the dimension ①' is smaller than the dimension ①.

As can be seen from fig. 5 and 9, after pressing the edge of the protective film 5 under the front case 6, the dimension ② can be omitted, i.e., the avoiding dimension between the protective film 5 and the front case 6 is not required to be designed; at the same time, dimension ① can also be reduced such that dimension ① becomes dimension ①'. The boundary of the display area a may be expanded, for example, from the boundary L1 to the boundary L2 in fig. 9, so as to increase the area of the display area a and reduce the frame size of the foldable display terminal 100.

Optionally, the sum of the difference between dimension ① and dimension ①' and dimension ② is at least 0.5mm in the first direction Y; in the second direction X, the sum of the difference between dimension ① and dimension ①' and dimension ② is at least 0.9mm; thus, after omitting the size ② and the partial size ①, the frame size of the foldable display terminal 100 may be reduced by at least 0.5mm in the first direction Y, and the frame size of the foldable display terminal 100 may be reduced by at least 0.9mm in the second direction X.

Further, after the edge of the protective film 5 is pressed under the front case 6, the staggered amount of the cover plate 12 may be hidden under the front case 6, and thus the value of the dimension ③ may be reduced, so that the frame size of the folding display terminal 100 may be further reduced. Illustratively, the reduced value of dimension ④ in embodiments of the present application may be in the range of 0.1mm to 0.3mm, for example, the reduced value of dimension ④ in embodiments of the present application may be 0.1mm, 0.15mm, 0.2mm, 0.26mm, 0.3mm, or the like, as compared to not pressing the edge of protective film 5 under front case 6. In combination with the omitted dimensions ② and the partial dimensions ①, the frame size of the foldable display terminal 100 may be reduced by 0.6mm in the first direction Y and the frame size of the foldable display terminal 100 may be reduced by 1.2mm in the second direction X.

Therefore, in the folded display terminal 100 provided by some embodiments of the present application, by providing the front case 6 and connecting the front case 6 with the first frame 211 and the second frame 221 of the middle frame 2, the front case 6 can cover part of edges of the flexible display screen 1 and the protective film 5 located in the middle frame 2, where the part of edges correspond to the positions of the first frame 211 and the second frame 221, so that not only can the front case 6 be used to cover the gaps at the positions of the first frame 211 and the second frame 221, the aesthetic property of the folded display terminal 100 be improved, but also different stacking structures (such as the flexible display screen 1) in the middle frame 2 can be limited by using the front case 6 and the middle frame 2, so that the folded display terminal 100 is prevented from being lifted out of the middle frame 2 in a limited scene (such as dropping, etc.), and the reliability of the folded display terminal 100 is improved.

In addition, in the embodiment of the application, by expanding the protective film 5 to the lower part of the front shell 6, the front shell 6 can cover part of the edge of the protective film 5, when the folding display terminal 100 is designed, the avoiding size between the protective film 5 and the front shell 6 is not required to be designed, the interval between the front shell 6 and the display area A is reduced, the frame size (namely, the black edge of the whole machine) of the folding display terminal 100 is effectively reduced, the area of the display area A is increased, and the screen occupation ratio of the folding display terminal 100 is improved.

It will be appreciated that, on the basis of reducing the size of the bezel of the foldable display terminal 100, a partial size may be used to increase the wall thickness of the middle frame 2 (e.g., the size of the first bezel 211 and/or the second bezel 221), or to increase the width of the front case 6, to increase the strength of the middle frame 2 or the front case 6, further improving the reliability of the foldable display terminal 100.

For example, in the embodiment of the present application, the reduction value of the size of the bezel can be 0.6mm, wherein 0.4mm can be used to reduce the size of the bezel, and 0.2mm can be used to increase the wall thickness of the middle bezel 2 or the width of the front case 6.

In some embodiments, referring to fig. 4 and 10, the front case 6 is further disposed along at least one of the third and fourth frames 2b and 2c and connected thereto. The front case 6 also covers part edges of the flexible display screen 1 and the protective film 5 corresponding to the third frame 2b and/or the fourth frame 2 c.

Illustratively, the front case 6 is disposed along the outer peripheral edge of the flexible display screen 1, surrounding the flexible display screen 1 and the protective film 5. It is understood that the position of the front case 6 opposite to the rotating member 23 of the center 2 is disconnected to avoid affecting the folding of the folding display terminal 100.

This can form a relatively complete coverage of the edges of the flexible display 1 and the protective film 5 by the front case 6, improving the aesthetic appearance of the folding display terminal 100.

In some embodiments, as shown in fig. 11 to 13, the folding display terminal 100 further includes: an elastic member 7. The elastic member 7 is located on the protective film 5, and the front case 6 covers the elastic member 7. That is, the elastic member 7 is located between the protective film 5 and the front case 6.

Illustratively, the material of the elastic member 7 may be an elastic material having a low hardness. Alternatively, the material of the elastic member 7 includes, but is not limited to, foam or silica gel, etc. The elastic member 7 is fixed to the front case 6, for example, and there is no constraint between the front case 6 and the flexible display screen 1, and the dislocation of the flexible display screen 1 is not substantially affected.

By arranging the elastic component 7, the tightness can be improved, the flexible display screen 1 can be separated from the front shell 6, and the flexible display screen 1 is prevented from being in direct contact with the front shell 6, so that the flexible display screen 1 can be protected better.

In some embodiments, the connection between the front shell 6 and the middle frame 2 includes various connection modes, and the connection can be selected according to actual needs.

In some examples, as shown in fig. 11, the folding display terminal 100 further includes: and an adhesive layer 8. The front shell 6 is connected with the middle frame 2 through an adhesive layer 8.

Illustratively, the middle frame 2 has a groove at a position for connecting the front shell 6, and the embodiment of the present application may use a dispensing process to inject glue into the groove, and then insert the front shell 6 into the groove, so that the front shell 6 and the middle frame 2 are bonded together. In this case, for example, the protective film 5 does not need to be replaced.

In this example, the connection mode between the front shell 6 and the middle frame 2 is simpler, easy to implement and lower in cost.

In other examples, the front shell 6 and the middle frame 2 are connected by a mechanical connection. As shown in fig. 12 and 13, the folding display terminal 100 further includes: and a connecting piece 9. The front shell 6 is connected with the middle frame 2 through a connecting piece 9.

Illustratively, the front shell 6 and the middle frame 2 may be connected by riveting, and the corresponding connecting members 9 include, but are not limited to, rivets. The front shell 6 and the middle frame 2 can also be connected in a threaded connection mode, and correspondingly, the connecting piece 9 can be a bolt. Of course, the connecting member 9 may be integrally formed with the front case 6, and the connecting member 9 may be inserted into the center 2.

The connection of the front shell 6 and the middle frame 2 is realized in a detachable mode, so that the front shell 6 is convenient to detach and the protective film 5 is convenient to replace.

In some embodiments, as shown in fig. 11, the front case 6 includes: a guard portion 6a and a support portion 6b. Wherein the protecting portion 6a covers part of edges of the flexible display screen 1 and the protective film 5, and the supporting portion 6b is connected between the protecting portion 6a and the middle frame 2.

Illustratively, the cross-sectional patterns of the guard portion 6a and the support portion 6b are L-shaped.

The connection manner of the protecting portion 6a and the supporting portion 6b is not limited in the embodiment of the present application. Alternatively, the guard portion 6a and the support portion 6b are integrally formed. Or the guard portion 6a and the support portion 6b are formed separately and fixedly connected together.

By adopting the protective part 6a and the supporting part 6b to form the front shell 6, the connection between the front shell 6 and the middle frame 2 is facilitated, and the coverage of the edges of the flexible display screen 1 and the protective film 5 is facilitated.

In some embodiments, as shown in fig. 8, the distance between the protective film 5 and the first frame 211 in the first direction Y is greater than the distance between the flexible display screen 1 and the first frame 211. And/or, along the first direction Y, the distance between the protective film 5 and the second bezel 221 is greater than the distance between the flexible display screen 1 and the second bezel 221.

As shown in fig. 9, the edge of the protective film 5 near the first frame 211 is stepped from the edge of the flexible display 1 near the first frame 211. And/or, the edge of the part of the protective film 5, which is close to the second frame 221, is stepped with the edge of the part of the flexible display screen 1, which is close to the second frame 221.

It is understood that the amount of dislocation of the protective film 5 is substantially maximum during the folding of the folding display terminal 100. With the above arrangement, the protection film 5 can be effectively prevented from being collided with the first frame 211 and/or the second frame 221 of the middle frame 2 due to staggered layers, and the reliability of the foldable display terminal 100 can be improved.

In some embodiments of the present application, as shown in fig. 14, the flexible display screen 1 has a display area a and a bezel area B surrounding the display area a. The flexible display panel 1 includes a plurality of subpixels P, a plurality of gate lines GL, and a plurality of data lines DL located in a display area a.

The plurality of sub-pixels P may be arranged in a plurality of rows along the first direction Y and a plurality of columns along the second direction X. Each row of the sub-pixels P includes a plurality of sub-pixels P sequentially arranged in the second direction X, and each column of the sub-pixels P includes a plurality of sub-pixels P sequentially arranged in the first direction Y. Alternatively, the foldable display terminal 100 adopts a top-bottom folding design, the plurality of data lines DL extend in the first direction Y and are sequentially arranged in the second direction X, and the plurality of gate lines GL extend in the second direction X and are sequentially arranged in the first direction Y. One gate line GL is electrically connected to one row of sub-pixels P, and provides a required scanning signal for the row of sub-pixels P, and one data line DL is electrically connected to one column of sub-pixels P, and provides a required data line number for the column of sub-pixels P. The sub-pixels P may emit light in cooperation with various electrical signals (including but not limited to a scan signal and a data signal) to enable the flexible display screen 1 to display an image.

Illustratively, the flexible display panel 1 further includes an array substrate gate driving (GOA) circuit located in the frame area B, and the GOA circuit includes a plurality of stages of shift registers sequentially arranged along the first direction Y, each stage of shift registers being electrically connected to one gate line GL, for example. The shift register is used for generating a scanning signal and transmitting the scanning signal to the gate line GL electrically connected with the scanning signal.

Illustratively, the bezel area B includes at least one fan-out area (fanout) C. Alternatively, the number of the fan-out areas C may be one or more. Of course, the frame area B may further include a binding area D located on a side of each fan-out area C away from the display area a, where the binding area D is used for binding a circuit (such as a flexible circuit board or a flip-chip film). The signal lines (e.g., the data lines DL) in the display area a extend out of the display area a, and are converged by the fan-out area C, and extend to the binding area D, and are bound with the corresponding circuits to receive the corresponding electrical signals. Optionally, in the case that the flexible display screen 1 has a touch function, the touch signal line may also extend out of the display area a, and through convergence of the fan-out area C, extend to the binding area D, and bind with a corresponding circuit to receive the touch signal. The signal line connected to the GOA circuit and the like may be wound to the fan-out area C.

The drawings of the embodiments of the present application illustrate the number of fan-out areas C as one, which should not be construed as a specific limitation on the structural configuration of the flexible display screen.

Illustratively, the portion where the fan-out area C and the binding area D are located in the flexible display screen 1 may be referred to as a chin, which may be bent to the back surface of the flexible display screen 1 to reduce the size of the lower frame of the flexible display screen 1 and the folding display terminal 100.

In some possible examples, as shown in fig. 14, the fan-out area C is located below the display area a, and the chin position corresponds to, for example, the position of the second bezel 221 of the middle frame 2. After the chin is bent to the back of the flexible display screen 1, the lower frame size of the flexible display screen 1 and the folding display terminal 100 is still relatively large compared to the sizes of the left and right frames. Moreover, since the upper and lower ends of the folded display terminal 100 are staggered in the folding process, the left and right ends of the folded display terminal are not staggered basically, which further results in that the sizes of the upper and lower frames are larger than the sizes of the left and right frames, so that the sizes of the black edges at the upper and lower ends are larger.

In addition, in the industrial design (industrial design, ID) of the folding display terminal 100, in order to improve the aesthetic property of the folding display terminal 100, the four frames of the folding display terminal 100 are made more symmetrical, and the sizes of the left and right frames are generally greatly increased, so that the area of the display area a is further reduced.

Based on this, in some examples of the present application, as shown in fig. 15 to 18, the fan-out area C is located at one side of the display area a in the second direction X. That is, the fan-out area C is located at the left or right side of the display area a. The fan-out area C extends along a first direction Y, and the extending direction Y is perpendicular to the bending axis direction of the folded display terminal 100. This can reduce the size of the lower frame of the flexible display 1 and the folding display terminal 100. In the process of industrial design, only the influence caused by the staggered phenomenon can be considered for the sizes of the upper frame and the lower frame, and only the influence caused by the position change of the fan-out area C is considered for the sizes of the left frame and the right frame, so that the symmetry of the sizes of different frames is improved.

Illustratively, the display area a includes a first sub-display area A1 corresponding to the first display section 1a, and a second sub-display area A2 corresponding to the second display section 1 b. As shown in fig. 15 to 18, the fan-out area C is located at one side of the first sub-display area A1 along the second direction X. That is, the fan-out area C is disposed opposite to the first sub-display area A1, and the fan-out area C is disposed offset from the second sub-display area A2.

Alternatively, as shown in fig. 15, the fan-out area C is located at the left side of the lower first sub-display area A1. Or as shown in fig. 16, the fan-out area C is located at the left side of the upper first sub-display area A1. Or as shown in fig. 17, the fan-out area C is located at the right side of the lower first sub-display area A1. Or as shown in fig. 18, the fan-out area C is located on the right side of the upper first sub-display area A1.

In this way, the sizes of the lower frames of the flexible display screen 1 and the folding display terminal 100 can be reduced, the sizes of the left and right frames are prevented from being increased, the symmetry and the screen ratio of the four frames of the folding display terminal 100 are improved, and the reliability of the flexible display screen 1 and the folding display terminal 100 can be improved.

Optionally, in the case that the flexible display screen 1 has a touch function, the signal line connected by the structures such as the touch signal line and the GOA circuit may also be wound to the fan-out area C on the first sub-display area A1 side, and led out from the position, so as to reduce the number of chin.

In some examples, as shown in fig. 15, the bezel area B includes a first sub-bezel area B1 and a second sub-bezel area B2 extending in the first direction Y and disposed opposite to each other, and a third sub-bezel area B3 and a fourth sub-bezel area B4 extending in the second direction X and disposed opposite to each other.

The flexible display 1 includes a plurality of fan-out lines FL. For example, each fan-out line FL is electrically connected to one data line DL. The fan-out line FL is led out from the third sub-frame area B3 or the fourth sub-frame area B4, and extends to the fan-out area C through the first sub-frame area B1 or the second sub-frame area B2.

The arrangement mode of the fan-out line FL is related to the position of the fan-out area C, and may be selected according to the specific position of the fan-out area C. For example, as shown in fig. 15, the fan-out area C is located at the left side of the first sub-display area A1 below, and among the plurality of fan-out lines FL, a part of the fan-out lines FL may be led out from the third sub-frame area B3, extend to the fan-out area C through the first sub-frame area B1, and another part of the fan-out lines FL may be led out from the fourth sub-frame area B4, extend to the fan-out area C through the first sub-frame area B1; or the fan-out lines FL may be led out from the fourth sub-frame area B4 and extend to the fan-out area C through the first sub-frame area B1.

Illustratively, the resistances of the plurality of fan-out lines FL are the same.

It will be appreciated that after adjusting the position of the fanout area C, the chin is asymmetrically designed with respect to the display area a, and the path lengths of the different fanout lines FL extending from the display area a to the fanout area C are different. By setting the resistances of the different fanout lines FL to be the same, the uniformity of the resistances of the different fanout lines FL can be improved, and thus the uniformity of the pattern displayed by the flexible display panel 1 can be improved.

Alternatively, the line width is substantially uniform at a portion of each of the fanout lines FL between the fanout area C and the display area a, and the lengths are different, so that the resistances of the portions of the different fanout lines FL between the fanout area C and the display area a are different. The embodiment of the application can adjust the parts of different fan-out lines FL in the fan-out area C so as to compensate the resistance and improve the uniformity of the resistance. For example, for a portion of the fan-out line FL located between the fan-out area C and the display area a to be shorter, a portion thereof located at the fan-out area C may be bent to increase the effective length thereof. For another example, for a portion of the longer fan-out line FL between the fan-out area C and the display area a, a portion thereof between the fan-out area C may be widened to reduce the effective resistance.

In some embodiments, as shown in fig. 19, at least one first display part 1a includes a main body part 11a, a bending Part (PB) 11b connected to the main body part 11a, and a circuit connection part 11c connected based on the bending part. For example, one first display section 1a in the flexible display screen 1 includes a main body portion 11a, a bent portion 11b, and a circuit connection portion 11c. As another example, two first display portions 1a in the flexible display screen 1 each include a main body portion 11a, a bent portion 11b, and a circuit connection portion 11c.

Here, with respect to the main body portion 11a, the bent portion 11b, and the circuit connection portion 11c, it is also understood that the flexible display screen 1 includes one main body portion 11a, at least one bent portion 11b connected to the main body portion 11a, and the circuit connection portion 11c connected to the bent portion 11 b.

The main body portion 11a corresponds to the display area a or the first sub-display area A1, and the main body portion 11a includes the above-mentioned sub-pixel P, gate line GL, data line DL, and the like. The bending portion 11b corresponds to the fan-out area C, the bending portion 11b includes various wires extending from the display area a to the binding area D, and the bending portion 11b is bent to the non-light-emitting side after being processed by a bending process, for example, is bent between the main body portion 11a and the carrier plate 2a of the middle frame 2. The circuit connection portion 11c corresponds to the binding area D, and the circuit connection portion 11c includes a plurality of binding pins, where the binding pins are bound to a circuit structure such as a flexible circuit board or a flip-chip film, and the circuit connection portion 11c and the circuit structure bound thereto are located on a non-light-emitting side, for example, between the main body portion 11a and the carrier plate 2a of the middle frame 2.

This is advantageous in reducing the bezel size (i.e., reducing the black-side size) of the flexible display screen 1 and the folding display terminal 100.

In some examples, as shown in fig. 19, the folding display terminal 100 further includes a spacer member 10, the spacer member 10 being located between the main body portion 11a and the circuit connection portion 11c. The spacer member 10 is for supporting the main body portion 11a and the circuit connection portion 11c.

It can be understood that after the circuit connection portion 11c is bent between the main body portion 11a and the carrier plate 2a of the middle frame 2, the bent portion 11b is in a bent state, and is generally in an arc shape. By providing the spacer member 10, a certain distance can be formed between the main body portion 11a and the circuit connection portion 11c, and the stability of the bent state of the bent portion 11b can be improved.

In some examples, as shown in fig. 19, the back film 3 in the folding display terminal 100 may be divided into a first back film 31 and a second back film 32 disposed at intervals, the first back film being located between the body portion 11a and the spacer member 10, the first back film 31 covering the body portion 11a for supporting the body portion 11a. In the case where the folded display terminal 100 includes the support sheet 4, the support sheet 4 is positioned between the first back film 31 and the spacer member 10, and the above-mentioned circuit connection portion 11c is folded between the support sheet 4 and the carrier plate 2a of the center 2. The second back film 32 is located between the circuit connection portion 11c and the spacer member 10. The second back film 32 covers the circuit connection portion 11c for supporting the circuit connection portion 11c.

It will be appreciated that the side surfaces of the spacer member 10, the first back film 31, the support sheet 4 and the second back film 32 define a gap with the bent portion 11b, and a portion of the front case 6 and the elastic member 7 are located above the bent portion 11 b. Since the bending portion 11b is bendable, a portion of the folded display terminal 100 corresponding to the gap is fragile, and when the folded display terminal 100 is dropped or otherwise specially deformed to deform the front case 6, stress concentration is easily formed in the portion and damage is easily caused to the structure of the portion.

Based on this, in some examples of the present application, as shown in fig. 19, the folded display terminal 100 further includes a filling portion T located at the side surfaces of the spacer member 10, the first back film 31, the support sheet 4, and the second back film 32, in the space surrounded by the bent portion 11b, and in contact with the spacer member 10, the first back film 31, the support sheet 4, the second back film 32, and the bent portion 11 b.

The filling portion T may fill the gap and form a support for the bent portion 11 b. This is advantageous in enhancing the strength of a partial region of the folded display terminal 100 corresponding to the gap, enhancing the ability of the partial region to resist external stress, and preventing the damage to the structure of the partial region due to the deformation of the front case 6, thereby enhancing the reliability of the folded display terminal 100. On this basis, when the frame size of the folding display terminal 100 is small, it is possible to avoid a situation in which the frame size has to be increased due to design consideration of reliability.

In some embodiments, the filler T extends along the intersection of the bent portion 11b and the body portion 11 a. And/or, the size of the filling portion T is equal to the size of the bent portion 11b along the extending direction of the intersection line of the bent portion 11b and the main body portion 11 a.

Illustratively, taking the structure shown in fig. 14 as an example, the intersection line of the bent portion 11b and the main body portion 11a extends in the second direction X, and accordingly, the filling portion T extends in the second direction X. Taking the structure shown in fig. 15 as an example, the intersection line of the bent portion 11b and the main body portion 11a extends in the first direction Y, and the filling portion T extends in the first direction Y accordingly. This can increase the overlapping area of the filling portion T and the bent portion 11b, and increase the protective effect of the filling portion T on the folding display terminal 100.

Illustratively, in the case where the size of the filling portion T and the size of the bent portion 11b are equal in the extending direction of the intersection line of the bent portion 11b and the main body portion 11a, the overlapping area of the filling portion T and the bent portion 11b can be further increased, and the protective effect of the filling portion T on the folding display terminal 100 can be further increased.

Optionally, the material of the filling portion T includes glue. The modulus component of the glue can be selected and set according to actual needs, and damage to the flexible display screen 1 can be avoided.

Illustratively, as shown in fig. 19, the folding display terminal 100 further includes a protective layer on a side of the bent portion 11b remote from the spacer member 10. The protective layer is bendable, and the material of the protective layer has good toughness, so that the protective layer can be greatly deformed. Before the bending process is performed on the bent portion 11b, a protective layer may be formed first, and then the bending process is performed on the bent portion 11 b. In this way, the bending portion 11b can be protected by the protective layer during the bending of the bending portion 11b, and the risk of breakage of the side of the bending portion 11b in contact with the protective layer due to a large tensile stress can be reduced.

It will be appreciated that the different designs described above may be combined such that the folding display terminal 100 has a variety of configurations.

The following describes possible configurations of the foldable display terminal 100 in different designs, taking the configurations shown in fig. 8, 9, 10, 15, and 19 as an example:

Example one:

In fig. 8 and 10, the folding display terminal 100 adopts a top-bottom folding design. As shown in fig. 8 and 9, the first frame 211 of the middle frame 2 is located above and the second frame 221 is located below. The front case 6 is disposed along the first frame 211 and the second frame 221, and is connected to the first frame 211 and the second frame 221. The front case 6 extends from the center 2 to above the protective film 5, covering part of the edges of the flexible display screen 1 and the protective film 5. In this way, during the process of folding the folded display terminal 100, the front case 6 can be utilized to cover the corresponding gaps at the positions of the first frame 211 and the second frame 221. In addition, the protective film 5 is outwardly expanded under the front case 6, and the area of the display area a is enlarged, so that the frame size (i.e., the black side size) of the folding display terminal 100 can be effectively reduced.

On this basis, in connection with fig. 15, the fan-out area C is disposed along the second direction X at one side of the display area a or the first sub-display area A1, so as to further reduce the sizes of the lower frames of the flexible display screen 1 and the folded display terminal 100, improve the uniformity of the sizes of the upper and lower frames of the folded display terminal 100, and improve the phenomenon of asymmetry of the upper and lower frames of the folded display terminal 100.

In this example, the different designs in the above two aspects may be referred to the description above, and will not be repeated here.

Example two:

On this basis, referring to fig. 19, the circuit connection portion 11c of the flexible display screen 1 is bent to a non-light-emitting area, that is, between the main body portion 11a and the carrier plate 2a of the bezel 2, so as to reduce the size of the area where the chin of the flexible display screen 1 is located, and effectively reduce the size of the bezel of the folded display terminal 100 relative to the chin.

The spacer member 10, the first back film 31, the support sheet 4, and the second back film 32 have a filling portion T provided in a space defined by the side surfaces and the bent portion 11 b. The filling portion T contacts with the spacer member 10, the first back film 31, the supporting sheet 4, the second back film 32, and the bent portion 11b, and supports the bent portion 11b, so as to enhance the strength of a portion of the folded display terminal 100 corresponding to the gap, enhance the ability of the portion to resist external stress, and prevent the structure of the portion from being damaged due to the deformation of the front case 6, thereby enhancing the reliability of the folded display terminal 100. On this basis, when the frame size of the folding display terminal 100 is small, it is possible to avoid a situation in which the frame size has to be increased due to design consideration of reliability.

Example three:

in fig. 15, a fan-out area C is disposed along the second direction X at one side of the display area a or the first sub-display area A1 to further reduce the size of the lower frame of the flexible display screen 1 and the folded display terminal 100, improve the uniformity of the upper frame size and the lower frame size of the folded display terminal 100, and improve the upper and lower frame asymmetry phenomenon of the folded display terminal 100.

On this basis, in connection with fig. 19, the bending portion 11b opposite to the fan-out area C is bent, and then the circuit connection portion 11C of the flexible display screen 1 is bent to a non-light-emitting area, that is, between the main body portion 11a and the carrier plate 2a of the frame 2, so as to reduce the size of the area where the chin of the flexible display screen 1 is located, and thus, the frame size of the folded display terminal 100 opposite to the chin can be effectively reduced.

Example four:

Further, in connection with fig. 19, the bending portion 11b opposite to the fan-out area C is bent, and then the circuit connection portion 11C of the flexible display screen 1 is bent to a non-light-emitting area, that is, between the main body portion 11a and the carrier plate 2a of the frame 2, so as to reduce the size of the area where the chin of the flexible display screen 1 is located, which can effectively reduce the frame size of the folded display terminal 100 opposite to the chin.

In this example, the above description of the different designs under the above three aspects may be referred to above, and will not be repeated here.

In the description herein, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples. The foregoing is merely illustrative of the embodiments of the present application, and the scope of the present application is not limited thereto, and any person skilled in the art will recognize that changes and substitutions are within the technical scope of the present disclosure. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A folding display terminal, characterized in that the folding display terminal comprises:

The flexible display screen comprises a plurality of first display parts and at least one second display part, wherein the first display parts are sequentially arranged along a first direction, the second display part is positioned between two adjacent first display parts, the second display part can be bent, and the bent axis is along a second direction; the first direction is perpendicular to the second direction;

the flexible display screen is positioned in the middle frame; the middle frame comprises a first frame and a second frame which are arranged along the first direction and are oppositely arranged;

a protective film on the flexible display screen;

The front shell is arranged at least along the first frame and the second frame and is connected with the first frame and the second frame; the front shell extends to the upper side of the protective film from the middle frame and covers the flexible display screen and part of the edge of the protective film.

2. The folding display terminal of claim 1, wherein the display terminal is configured to display the plurality of display images,

The folding display terminal further includes: the front shell is connected with the middle frame through the bonding layer; or alternatively, the first and second heat exchangers may be,

The folding display terminal further includes: the front shell is connected with the middle frame through the connecting piece.

3. The foldable display terminal of claim 1, wherein the middle frame further comprises a third frame and a fourth frame arranged along the second direction and disposed opposite to each other;

The front shell is also arranged along at least one of the third frame and the fourth frame and is connected with the third frame and the fourth frame.

4. The foldable display terminal of claim 3, wherein the middle frame further comprises: a carrying plate;

the bearing plate is provided with a bearing surface, and the flexible display screen is positioned on the bearing surface;

the first frame, the second frame, the third frame and the fourth frame are connected with the bearing plate and encircle the flexible display screen.

5. The folding display terminal of claim 1, wherein the front case comprises:

A protective part covering part of edges of the flexible display screen and the protective film;

And the supporting part is connected between the protecting part and the middle frame.

6. The foldable display terminal of claim 1, wherein the foldable display terminal further comprises:

and an elastic member on the protective film, the front case covering the elastic member.

7. The foldable display terminal of claim 1, wherein a spacing between the protective film and the first frame is greater than a spacing between the flexible display screen and the first frame in the first direction; and/or the number of the groups of groups,

And the distance between the protective film and the second frame is larger than the distance between the flexible display screen and the second frame along the first direction.

8. The foldable display terminal of any of claims 1-7, wherein the flexible display screen has a display area and a border area surrounding the display area, the border area including at least one fan-out area;

The display area comprises a first sub-display area corresponding to the first display part and a second sub-display area corresponding to the second display part;

And along the second direction, the fan-out area is positioned at one side of the first sub-display area.

9. The folding display terminal of claim 8, wherein the flexible display screen comprises:

A plurality of data lines and a plurality of gate lines located in the display area, the plurality of data lines extending in the first direction, the plurality of gate lines extending in the second direction;

A plurality of fan-out lines electrically connected with the data lines;

the frame area comprises a first sub-frame area and a second sub-frame area which extend along the first direction and are oppositely arranged, and a third sub-frame area and a fourth sub-frame area which extend along the second direction and are oppositely arranged;

The fan-out line is led out from the third sub-frame area or the fourth sub-frame area and extends to the fan-out area through the first sub-frame area or the second sub-frame area;

The resistances of the fan-out lines are the same.

10. The folding display terminal according to any one of claims 1 to 7, wherein the first display portion includes a main body portion, a bent portion connected to the main body portion, and a circuit connection portion connected to the bent portion; the main body part is provided with a light-emitting side and a non-light-emitting side which are opposite, the bending part bends towards the non-light-emitting side, and the circuit connecting part is positioned on the non-light-emitting side;

The folding display terminal further includes:

a spacer member located between the main body portion and the circuit connection portion;

a first backing film located between the body portion and the spacer member;

A support sheet located between the first back film and the spacer member;

A second back film located between the circuit connection portion and the spacer member;

And the filling part is positioned in a gap formed by the side surfaces of the spacer component, the first back film, the supporting sheet and the second back film and the bending part.

11. The folding display terminal according to claim 10, wherein the filling portion extends along an intersection line of the bending portion and the main body portion; and/or the number of the groups of groups,

The size of the filling part is equal to the size of the bending part along the extending direction of the intersecting line of the bending part and the main body part.

12. A folding display terminal, characterized in that the folding display terminal comprises: a flexible display screen;

the flexible display screen is provided with a display area and a frame area surrounding the display area, wherein the frame area comprises at least one fan-out area;

13. The folding display terminal of claim 12, wherein the flexible display screen comprises:

A plurality of fan-out lines electrically connected with the data lines;

The resistances of the fan-out lines are the same.

14. A folding display terminal, characterized in that the folding display terminal comprises:

The flexible display screen comprises a main body part, at least one bending part connected with the main body part and a circuit connecting part connected with the bending part; the flexible display screen is provided with a light-emitting side and a non-light-emitting side which are opposite, the bending part bends towards the non-light-emitting side of the flexible display screen, and the circuit connecting part is positioned at the non-light-emitting side of the flexible display screen;

a first backing film located between the body portion and the spacer member;

A support sheet located between the first back film and the spacer member;

15. The folding display terminal according to claim 14, wherein the filling portion extends along an intersection line of the bending portion and the main body portion; and/or the number of the groups of groups,