Patent Description:
Generally, screens are disposed for current electronic devices such as a television set, a smart screen, a wearable device, and a personal mobile terminal. The screen is an important window for presenting information such as an image to a user. As shown in <FIG>, a black border exists in a fringe part of the screen.

The black border is a cabling region of the screen, and cannot display an image, but occupies a specific area on a surface of the screen. Generally, to pursue better visual experience, the user expects that an area of a part that is of the electronic device and that can display an image is as large as possible. Generally, the cabling region of the screen cannot be removed. Therefore, how to improve visual experience of the user in a case of a black border is an urgent problem to be resolved at present. Document <CIT> discloses a portable electronic device. The electronic device includes a transparent front glass cover including a planar portion that forms a front surface of the electronic device, a planar rear glass cover that forms a rear surface of the electronic device, a metal bezel that surrounds a space formed by the front glass cover and the rear glass cover, and a flexible display device that is embedded in the space and exposed through the front glass cover. The front cover includes a left bent portion and a right bent portion on the left and right of the planar portion at the center of the front cover. Document <CIT> discloses an OLED display substrate, an OLED display panel and manufacturing methods thereof. The OLED display substrate includes a substrate including a main display region, plural side display regions outside plural edges of the main display region, respectively, and plural corner display regions outside every two adjacent edges of the main display region and around intersections of the every two adjacent edges, respectively; and plural display elements on the main display region, the plural side display regions, and the plural corner display regions of the substrate, respectively. At least the plural corner display regions of the substrate are made of a flexible material, plural openings are provided in each of the plural corner display regions, and each opening in each corner display region does not overlap any one of the display elements.

Embodiments of the present invention are defined by the independent claims. Additional features of embodiments of the invention are presented in the dependent claims. In the following, parts of the description and drawings referring to former embodiments which do not necessarily comprise all features to implement embodiments of the claimed invention are not represented as embodiments of the invention but as examples useful for understanding the embodiments of the invention. In view of this, embodiments of this application provide a curved screen and an electronic device with a curved screen, to improve visual experience of a user.

According to a first aspect, this application provides an embodiment of a curved screen assembly. The curved screen assembly includes a curved screen and a cover panel, the curved screen is attached to the cover panel, the curved screen includes a main display panel and a plurality of side display panels, the cover panel is in a box-shaped structure, the main display panel is attached to a bottom surface of the box-shaped structure, the side display panel is attached to a side surface of the box-shaped structure, and the curved screen is in a form of a closed round or quasi-round polygon as a whole in a direction perpendicular to the bottom surface.

A fringe part of the screen is bent, so that a majority of a cabling region is located on a side surface of the electronic device, to reduce an area occupied by the cabling region on a main surface. In this way, an area of a region that can be used for display on the main surface can be increased, thereby improving customer experience.

In an embodiment of the curved screen assembly, an edge of the main display panel is a straight edge, the main display panel has a plurality of straight edges, a part at which two adjacent straight edges intersect is a corner, each straight edge is correspondingly connected to one side display panel, an edge that is of the side display panel and that intersects with the straight edge is an inner edge, there is also an outer edge at the fringe of the side display panel, the outer edge is located at the fringe of the curved screen, both the inner edge and the outer edge are connected to the corner of the main display panel, and a segment connecting the outer edge and the corner is an arc-shaped transition edge.

The part connecting the outer edge of the side display panel and the corner is an arc-shaped transition edge, so that when the side display panel is bent to the side surface of the electronic device, the corner is quite stretched, causing no fold. In addition, transition of the arc-shaped transition edge is visually natural, so that a fringe line of the main display panel is smooth, thereby improving use experience.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), for any corner of the main display panel, bending radians of an arc-shaped transition edge on both sides of the corner are unequal.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), radians of all parts of the arc-shaped transition edge are unequal.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), the arc-shaped transition edge is presented as one arc on each reference cross section, and the reference cross section is a cross section perpendicular to a thickness direction of the side display panel.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), radians of all parts of an arc that is of the arc-shaped transition edge and that is located on one reference cross section are unequal.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), radians of arcs of the arc-shaped transition edge that are located on different reference cross sections are unequal.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), the main display panel is in a panel shape of a rectangle, the main display panel in the panel shape of a rectangle has four straight edges, two opposite straight edges fall into one group, side display panels connected to one group of straight edges are symmetrically disposed, and side display panels connected to the other group of straight edges are asymmetrically disposed.

In an embodiment of the curved screen assembly (this embodiment may be combined with any one or more of the foregoing embodiments of the curved screen), the main display panel is in a panel shape of a symmetric polygon, a cross section of the curved screen at a center position in a width direction is a first screen cross section, and a cross section of the curved screen at a center position in a length direction is a second screen cross section. The curved screen may have the following overall forms:.

According to a second aspect, this application further provides an embodiment of an electronic device. The electronic device includes a cover panel, a middle frame component, a rear housing, a circuit board, a power module, and a curved screen, the middle frame component is in a frame-shaped structure, the cover panel and the rear housing are separately fixed on both sides of the middle frame component, a housing of the electronic device is enclosed by the middle frame component, the cover panel, and the rear housing together, the circuit board and the power module are disposed in the housing of the electronic device, the power module is configured to supply power to the curved screen and the circuit board, a working circuit is disposed in the circuit board, the working circuit is configured to send a display instruction to the curved screen, the curved screen includes a main display panel and a plurality of side display panels, the curved screen is attached to the cover panel, a largest display surface presenting content to a user during use of the electronic device is a main surface, one or more surfaces connected to the fringe of the main surface are side surfaces, the main display panel of the curved screen is located on the main surface of the electronic device, the side display panel of the curved screen is located on the side surface of the electronic device, the main display panel is a polygon, and the curved screen is in a form of a closed round or quasi-round polygon as a whole in a direction perpendicular to the main surface.

In the embodiment of the electronic device in the second aspect, various implementations of the curved screen and the cover panel in the curved screen assembly in the first aspect may be used for the curved screen and the cover panel.

In a first possible implementation of the second aspect, the cover panel includes a bottom panel, round corners, and side panels, there are a plurality of straight edges at the fringe of the bottom panel, the side panel is connected to the straight edge of the bottom panel, a position at which adjacent straight edges of the bottom panel intersect is connected to the round corner, the round corner is in a three-dimensional arc-shaped structure, and both sides of the round corner are connected to the side panel. The side display panel is attached to the side panel of the cover panel, the main display panel is attached to the bottom panel of the cover panel, the corner is attached to the position at which two adjacent straight edges of the bottom panel intersect, the middle frame component includes a plurality of slender side edges, the plurality of slender side edges are connected together to form a frame, and the side panel of the cover panel and the side edge of the middle frame component are assembled together.

With reference to the second aspect or the first possible implementation of the second aspect, in a second possible implementation, a width of the side panel of the cover panel is equal to or greater than a width of the side display panel.

With reference to any one of the second aspect and the first and the second possible implementations of the second aspect, in a third possible implementation, an inner surface of the round corner is an arc surface, and an outer surface of the round corner is also an arc surface.

The corner is attached to the position at which two adjacent straight edges of the bottom panel intersect, so that the corner is located on the main surface of the electronic device. In other words, the corner of the main display panel is not attached to the inner surface of the round corner, and the corner is not bent as the inner surface of the round corner is bent, preventing the corner of the main display panel from being bent in two directions if the inner surface of the round corner is bent in the two directions at the same time.

With reference to any one of the second aspect and the first to the third possible implementations of the second aspect, in a fourth possible implementation, radians of all parts of the arc surface of the inner surface of the round corner may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small.

With reference to any one of the second aspect and the first to the third possible implementations of the second aspect, in a fifth possible implementation, radians of all parts of the arc surface of the outer surface of the round corner may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small.

With reference to any one of the second aspect and the first to the fifth possible implementations of the second aspect, in a sixth possible implementation, a cross section of a position of the round corner in a direction parallel to an inner surface or an outer surface of the bottom panel is a first round corner cross section, the outer surface of the round corner is presented as one arc on each first round corner cross section, and the inner surface of the round corner is presented as one arc on each first round corner cross section.

With reference to any one of the second aspect and the first to the sixth possible implementations of the second aspect, in a seventh possible implementation, cross sections of the position of the round corner that are separately perpendicular to two straight edges connected to the round corner are a second round corner cross section and a third round corner cross section, the outer surface of the round corner is presented as one arc on each second round corner cross section, the inner surface of the round corner is presented as one arc on each second round corner cross section, the outer surface of the round corner is presented as one arc on each third round corner cross section, and the inner surface of the round corner is presented as one arc on each third round corner cross section.

With reference to any one of the second aspect and the first to the seventh possible implementations of the second aspect, in an eighth possible implementation, for a cover panel with a rectangular bottom panel, the bottom panel has four straight edges, two opposite straight edges fall into one group, side panels connected to one group of straight edges may be symmetrically disposed, and side panels connected to the other group of straight edges are asymmetrically disposed.

In a ninth possible implementation of the second aspect, the middle frame component includes wrap corners and wrap edges, the middle frame component is in a frame-shaped structure, the wrap corner is located at a corner position of the frame-shaped structure, the wrap edge is connected between adjacent wrap corners, the wrap corner is in a three-dimensional arc-shaped structure, the cover panel includes a bottom wall and a plurality of side walls, there are a plurality of straight edges at the fringe of the bottom wall, each straight edge of the bottom wall is correspondingly connected to one side wall, a part at which two adjacent straight edges of the bottom wall intersect is a cover panel corner, there is a cover panel inner edge and a cover panel outer edge at the fringe of the side wall, the cover panel inner edge is connected to the straight edge of the bottom wall, the cover panel outer edge is located at the fringe of the cover panel, both the cover panel inner edge and the cover panel outer edge of the side wall are connected to the cover panel corner, a segment connecting the cover panel outer edge and the cover panel corner is an arc-shaped transition edge, the main display panel is attached to the bottom wall of the cover panel, the side display panel is attached to the side wall of the cover panel, the corner of the main display panel is located at a position of the cover panel corner, the wrap corner of the middle frame component is fastened to the cover panel corner of the cover panel, and the wrap edge of the middle frame component is fastened to the side wall of the cover panel.

With reference to the second aspect or the ninth possible implementation of the second aspect, in a tenth possible implementation, a width of the side wall of the cover panel is equal to or greater than a width of the side display panel.

With reference to any one of the second aspect and the ninth and the tenth possible implementations of the second aspect, in an eleventh possible implementation, an inner surface of the wrap corner is an arc surface, and an outer surface of the wrap corner is also an arc surface.

With reference to any one of the second aspect and the ninth to the eleventh possible implementations of the second aspect, in a twelfth possible implementation, radians of all parts of the inner surface of the wrap corner may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small.

With reference to any one of the second aspect and the ninth to the eleventh possible implementations of the second aspect, in a thirteenth possible implementation, radians of all parts of the outer surface of the wrap corner may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small.

With reference to any one of the second aspect and the ninth to the thirteenth possible implementations of the second aspect, in a fourteenth possible implementation, a cross section of a position of the wrap corner in a direction parallel to the main surface of the electronic device is a first wrap corner cross section, the outer surface of the wrap corner is presented as one arc on each first wrap corner cross section, and the inner surface of the wrap corner is presented as one arc on each first wrap corner cross section.

With reference to any one of the second aspect and the ninth to the fourteenth possible implementations of the second aspect, in a fifteenth possible implementation, cross sections of the position of the wrap corner that are separately perpendicular to longitudinal directions of two wrap edges connected to the wrap corner are a second wrap corner cross section and a third wrap corner cross section, the outer surface of the wrap corner is presented as one arc on each second wrap corner cross section, the inner surface of the wrap corner is presented as one arc on each second wrap corner cross section, the outer surface of the wrap corner is presented as one arc on each third wrap corner cross section, and the inner surface of the wrap corner is presented as one arc on each third wrap corner cross section.

With reference to any one of the second aspect and the ninth to the fifteenth possible implementations of the second aspect, in a sixteenth possible implementation, for any cover panel corner of the bottom wall, bending radians of an arc-shaped transition edge on both sides of the cover panel corner are unequal.

With reference to any one of the second aspect and the ninth to the sixteenth possible implementations of the second aspect, in a seventeenth possible implementation, radians of all parts of the arc-shaped transition edge are unequal.

With reference to any one of the second aspect and the ninth to the seventeenth possible implementations of the second aspect, in an eighteenth possible implementation, the arc-shaped transition edge is presented as one arc on each first cross section, and the first cross section is a cross section perpendicular to a thickness direction of the side wall.

With reference to any one of the second aspect and the ninth to the seventeenth possible implementations of the second aspect, in a nineteenth possible implementation, the arc-shaped transition edge is presented as one arc on each first cross section, the first cross section is a cross section perpendicular to a thickness direction of the side wall, and radians of all parts of an arc that is of the arc-shaped transition edge and that is located on one first cross section are unequal.

With reference to any one of the second aspect and the ninth to the nineteenth possible implementations of the second aspect, in a twentieth possible implementation, the arc-shaped transition edge is presented as one arc on each first cross section, the first cross section is a cross section perpendicular to the thickness direction of the side wall, and radians of arcs of the arc-shaped transition edge that are located on different first cross sections may be unequal.

With reference to any one of the second aspect and the ninth to the twentieth possible implementations of the second aspect, in a twenty-first possible implementation, for a cover panel with a rectangular bottom wall, the bottom wall has four straight edges, two opposite straight edges fall into one group, side walls connected to one group of straight edges may be symmetrically disposed, and side walls connected to the other group of straight edges may be asymmetrically disposed.

With reference to any one of the second aspect and the first to the twenty-first possible implementations of the second aspect, in a twenty-second possible implementation, when the curved screen is in a working state, the main display panel is configured to display corresponding content according to the display instruction.

With reference to any one of the second aspect and the first to the twenty-second possible implementations of the second aspect, in a twenty-third possible implementation, the main surface is a polygon, and has a plurality of straight edges, a position at which two adjacent straight edges intersect is a corner, and when the curved screen is in the working state, a position of the straight edge of the main surface has no black border or has a black border only in the corner.

With reference to any one of the second aspect and the first to the twenty-third possible implementations of the second aspect, in a twenty-fourth possible implementation, there is no gap in the corner of the main display panel.

Reference numerals of elements in the accompanying drawings are as follows:.

The embodiments of this application may be applied to various electronic devices with screens. The electronic device may be a television set, a smart screen, a wearable device, an in-vehicle terminal, a personal mobile terminal, a personal computer, a multimedia player, an electronic reader, a smart home device, a robot, or the like. The personal mobile terminal may also be a smartphone, a tablet computer, or the like. The wearable device may also be a smart band, an intelligent medical device, a head-mounted terminal, or the like. The head-mounted terminal may be a virtual reality terminal, an augmented reality terminal, or the like. The intelligent medical device may be an intelligent blood pressure measurement device, an intelligent blood sugar measurement device, or the like. The smart home device may be an intelligent access control system or the like. The robot may be any electronic device serving people according to instructions of the people.

Generally, there are three types of screens of electronic devices: an LCD (liquid crystal display), a rigid OLED (organic light-emitting display), and a flexible OLED.

The screen is attached to the inside of a cover panel, one side that is of the screen and that displays a pattern faces the cover panel, the cover panel is transparent, and the pattern displayed on the screen can be seen through the cover panel. As a housing of the electronic device, the cover panel is located on an outer surface of the electronic device. Alternatively, the screen may be attached to an outer surface of the cover panel.

In the embodiments of this application, a curved screen may be a flexible OLED. A width of a cabling region (namely, a black border) in a fringe part of the screen may be recognized by a naked eye, and cannot be ignored. For example, widths of black borders of some screens may reach <NUM>.

An overall shape of the electronic device may be a flat panel, a column, a ball, a ring, a helmet, or the like. A largest display surface presenting content to a user during use of the electronic device is defined as a main surface, and one or more surfaces connected to the fringe of the main surface are defined as side surfaces. An included angle between the main surface and the side surface ranges from <NUM> degrees to <NUM> degrees, for example, <NUM> degrees. The main surface is a polygon, and has a plurality of straight edges, and a position at which two adjacent straight edges intersect is a corner.

In the embodiments of this application, the fringe part of the screen is bent, so that a majority of the cabling region is located on the side surface of the electronic device, to reduce an area occupied by the cabling region on the main surface. In this way, an area of a region that can be used for display on the main surface can be increased, thereby improving customer experience.

As shown in <FIG> and <FIG>, a curved screen <NUM> includes a main display panel <NUM> and a plurality of side display panels <NUM>, and the main display panel <NUM> is located on the main surface of the electronic device. The side display panel <NUM> shown in <FIG> is unbent to the side surface of the electronic device, and the curved screen <NUM> is in a flat panel-shaped structure as a whole. <FIG> shows two states. A view on the right shows a state in which the side display panel <NUM> is unbent to the side surface of the electronic device, and a view on the left shows a state in which the side display panel <NUM> is bent to the side surface of the electronic device. However, the states in the two views in <FIG> are seen from a direction perpendicular to the main display panel <NUM>. After the side display panel <NUM> is bent to the side surface of the electronic device, an included angle between the main display panel <NUM> and the side display panel <NUM> ranges from <NUM> degrees to <NUM> degrees, for example, <NUM> degrees. The main display panel <NUM> may be used to display an image, and the side display panel <NUM> is not used to display an image. Certainly, alternatively, both the main display panel <NUM> and the side display panel <NUM> may be used to display an image.

The cover panel is disposed in a box-shaped structure, the main display panel is attached to a bottom surface of the box-shaped structure, and the side display panel is attached to a side surface of the box-shaped structure. When the bottom surface of the cover panel is a polygon, from the outside of the cover panel, the curved screen located on the inside of the cover panel is in a form of a closed round or quasi-round polygon as a whole in a direction perpendicular to the bottom surface of the cover panel. When the bottom surface of the cover panel is a rectangle, from the outside of the cover panel, the curved screen located on the inside of the cover panel is in a form of a closed round or quasi-round rectangle as a whole in a direction perpendicular to the bottom surface of the cover panel. In other words, when the bottom surface of the cover panel is a polygon, the curved screen is in the form of a closed round or quasi-round polygon as a whole in the direction perpendicular to the bottom surface. When the bottom surface of the cover panel is a rectangle, the curved screen is in the form of a closed round or quasi-round rectangle as a whole in the direction perpendicular to the bottom surface. A shape and dimensions of the bottom surface of the cover panel are basically the same as those of the main display panel.

Referring to <FIG>, an edge of the main display panel <NUM> is a straight edge <NUM>, the main display panel has a plurality of straight edges <NUM>, and a part at which two adjacent straight edges <NUM> intersect is a corner <NUM>. <FIG> provides a partial enlarged view of a region near the corner <NUM>. A position denoted by D is the corner, and two parts A and B are side display panels <NUM>.

Each straight edge <NUM> of the main display panel <NUM> is correspondingly connected to one side display panel <NUM>, an edge that is of the side display panel and that intersects with the straight edge is an inner edge, and a position at which the side display panel <NUM> is connected to the straight edge <NUM> may be disposed in a form of a connection using an arc-shaped chamfer.

There is the inner edge <NUM> and an outer edge <NUM> at the fringe of the side display panel <NUM>, the outer edge <NUM> is located at the fringe of the curved screen <NUM>, both the inner edge <NUM> and the outer edge <NUM> of the side display panel <NUM> are connected to the corner <NUM> of the main display panel <NUM>, and a segment connecting the outer edge <NUM> and the corner <NUM> is an arc-shaped transition edge. The inner edge <NUM> may be a straight edge, or may be a curved edge. A part that is of the outer edge <NUM> and that is located between two arc-shaped transition edges may be disposed parallel to the inner edge <NUM>, or a part that is of the outer edge <NUM> and that is located between two arc-shaped transition edges may not be disposed parallel to the inner edge <NUM>.

For any corner <NUM> of the main display panel <NUM>, bending radians of an arc-shaped transition edge on both sides of the corner <NUM> may be equal or unequal.

In the partial enlarged view in <FIG>, a part denoted by a and b is the arc-shaped transition edge, radians of all parts of the arc-shaped transition edge may be equal, or radians of all parts of the arc-shaped transition edge may be unequal.

Because the curved screen <NUM> has a specific thickness, the arc-shaped transition edge a and b in <FIG> is presented as one arc on each reference cross section. The reference cross section is a cross section perpendicular to a thickness direction of the side display panel <NUM>. Radians of all parts of an arc that is of the arc-shaped transition edge and that is located on one reference cross section may be equal or unequal. Radians of arcs of the arc-shaped transition edge that are located on different reference cross sections may be equal or unequal.

The straight edge <NUM> of the main display panel <NUM> is an edge extending along a straight line. The straight edge is an edge that extends along a straight line from a perspective of a naked eye but may bend to a specific extent or have a specific radian from a microscopic perspective.

As shown in <FIG>, a pattern is displayed on the curved screen in the figure. The view on the left shows that after the side display panel is bent to the side surface of the electronic device, a black border exists only in the corner <NUM> of the main display panel <NUM> on the main surface of the electronic device, and there is no black border at another position. In the embodiment depicted in <FIG>, the position at which the straight edge <NUM> of the main display panel <NUM> is connected to the side display panel <NUM> is in the form of a connection using an arc-shaped chamfer. Therefore, the straight edge <NUM> and the corner <NUM> are not shown in the view on the left in <FIG>.

In addition, it can be learned from <FIG> that the part connecting the outer edge <NUM> of the side display panel and the corner <NUM> is an arc-shaped transition edge, so that when the side display panel is bent to the side surface of the electronic device, the corner <NUM> is quite stretched, causing no fold. In addition, there is no gap in the corner of the main display panel. Transition of the arc-shaped transition edge is visually natural, so that a fringe line of the main display panel <NUM> is smooth, thereby improving use experience. Although the screen can be curved, due to a technical limitation, the screen can be bent only in one direction, and cannot be bent in two or more directions at the same time. Therefore, if processing is improper, a fold tends to occur in a corner. In this embodiment, the side display panel is bent along a straight edge, and because the corner is already the most marginal part, and the part connecting the outer edge of the side display panel and the corner is an arc-shaped transition edge, no fold occurs.

Why stacking and a fold tend to occur in the corner when the side display panel is bent may be explained using a piece of paper. As shown in <FIG> shows that four edges of a piece of paper are bent along dashed lines in one direction. It is found that there is extra paper in the corner. The extra paper is paper in black. The extra paper is stacked together, causing folds.

In the embodiments of this application, as shown in <FIG>, when the parts A and B are bent along the straight edge <NUM>, because the point D is connected to an arc-shaped edge, there is no part protruding from the outside of the point D. Therefore, no fold is caused at the point D.

<FIG> and <FIG> show states in which the curved screen is installed on the electronic device. The side display panel <NUM> on the periphery of the main display panel <NUM> is bent to the side surface of the electronic device. In this case, a black border located on the side display panel <NUM> is located on the side surface of the electronic device, and only a black border at a position of the corner <NUM> of the main display panel <NUM> is located on the main surface of the electronic device. However, because the position of the corner <NUM> is quite small, the black border in the corner <NUM> is also quite small. If only the main display panel on the main surface of the electronic device is used to display an image, basically, no black border can be seen on the main surface of the electronic device, and a full screen is basically implemented on the main surface, in other words, basically, only a region that can be used for display exists on the curved screen on the main surface, and a black border that cannot be used for display can hardly be seen.

The curved screen has an arc-shaped transition edge on both sides of the corner <NUM>. Therefore, in a direction perpendicular to the main surface of the electronic device, a fringe line of the curved screen is complete and continuous, transition is natural, and the line is stretched and smooth. When the main display panel is a polygon, from the outside of the electronic device, the curved screen located on the inside of the cover panel is in the form of a closed round or quasi-round polygon as a whole in the direction perpendicular to the main surface of the electronic device. When the main display panel is a rectangle, from the outside of the electronic device, the curved screen located on the inside of the cover panel is in the form of a closed round or quasi-round rectangle as a whole in the direction perpendicular to the main surface of the electronic device. In other words, when the main display panel is a polygon, the curved screen is in the form of a closed round or quasi-round polygon as a whole in the direction perpendicular to the main surface. When the main display panel is a rectangle, the curved screen is in the form of a closed round or quasi-round rectangle as a whole in the direction perpendicular to the main surface. The main display panel may be in a panel shape of a polygon. Specifically, the main display panel may be in a panel shape of a symmetric polygon, for example, a panel shape of a rectangle or a hexagon.

For a curved screen whose side display panel has been bent to a side surface of an electronic device, a rectangular main display panel has four straight edges, and two opposite straight edges fall into one group. Side display panels connected to one group of straight edges may be symmetrically disposed, and side display panels connected to the other group of straight edges may be symmetrically disposed, or may be asymmetrically disposed.

<FIG> and <FIG> show a complete electronic device. A middle frame component <NUM> is usually disposed on the electronic device, and the middle frame component <NUM> is used to fasten the cover panel and a rear housing <NUM> of the electronic device. The middle frame component <NUM> is in a frame-shaped structure, the cover panel and the rear housing <NUM> are separately fastened on both sides of the middle frame component <NUM>, and a housing of the electronic device is enclosed by the middle frame component <NUM>, the cover panel, and the rear housing <NUM> together. A circuit board and a power module are disposed in the housing of the electronic device. The power module is configured to supply power to the curved screen and the circuit board, a working circuit is disposed in the circuit board, the working circuit is configured to send a display instruction to the curved screen, and when the curved screen is in a working state, the main display panel displays corresponding content according to the display instruction. When the curved screen is in the working state, the side display panel may also display corresponding content according to the display instruction sent by the circuit board. When the curved screen is in the working state, the main display panel has a black border only in the corner. A position of the straight edge of the main surface has no black border or has a black border only in the corner.

The middle frame component <NUM> and the rear housing <NUM> may also be disposed as an integral structure.

A design form of the middle frame component is usually related to a design form of the cover panel. The following describes two design forms of the middle frame component and the cover panel by using two examples.

As shown in <FIG> and <FIG>, a pattern exists on the curved screen in <FIG>, and the curved screen has a black border. In <FIG>, the curved screen is fastened to the inside of the cover panel. Therefore, the figure shows two components: the cover panel and the curved screen. However, because the cover panel is transparent, the curved screen can still be seen from the outside of the cover panel. For ease of display, a main view, a top view, a bottom view, a left view, and a right view are shown in <FIG>. <FIG> is an overall structural diagram of the electronic device, and the electronic device in the figure is a mobile phone. <FIG> shows a front view, a top view, a bottom view, a left view, and a right view of the electronic device. In <FIG>, the curved screen, the cover panel, the middle frame component <NUM>, and the rear housing <NUM> can be seen, and because the cover panel is transparent, the curved screen can be seen from the outside of the electronic device.

As shown in <FIG> and <FIG>, the cover panel includes a bottom panel <NUM>, a round corner <NUM>, and a side panel <NUM>. There are a plurality of straight edges <NUM> at the fringe of the bottom panel <NUM>, and the side panel <NUM> is connected to the straight edge <NUM> of the bottom panel <NUM>. An included angle between the bottom panel <NUM> and the side panel <NUM> ranges from <NUM> degrees to <NUM> degrees, for example, <NUM> degrees. A position at which the side panel <NUM> is connected to the straight edge <NUM> of the bottom panel <NUM> may be disposed in the form of a connection using an arc-shaped chamfer. In the embodiments depicted in <FIG> and <FIG>, the position at which the side panel <NUM> is connected to the straight edge <NUM> of the bottom panel <NUM> is in the form of a connection using an arc-shaped chamfer. Therefore, the straight edge <NUM> is not shown in the main views in <FIG> and <FIG>, and the straight edge <NUM> can be seen in the top views, the bottom views, the left views, and the right views. Certainly, the straight edge <NUM> of the curved screen cannot be seen in the main views, either, and the straight edge <NUM> can be seen in the top views, the bottom views, the left views, and the right views.

A position at which adjacent straight edges <NUM> of the bottom panel <NUM> intersect is connected to the round corner <NUM>, and the round corner <NUM> is in a three-dimensional arc-shaped structure. Both sides of the round corner <NUM> are connected to the side panel <NUM>. An inner surface of the round corner <NUM> is an arc surface, and an outer surface of the round corner <NUM> is also an arc surface. However, radians of the arc surface of the inner surface and the arc surface of the outer surface may be equal or unequal. Radians of all parts of the arc surface of the inner surface of the round corner <NUM> may be equal. Alternatively, radians of all parts of the arc surface of the inner surface of the round corner may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small. Radians of all parts of the arc surface of the outer surface of the round corner may be equal. Alternatively, radians of all parts of the arc surface of the outer surface of the round corner may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small.

A cross section of a position of the round corner <NUM> in a direction parallel to an inner surface or an outer surface of the bottom panel <NUM> is a first round corner cross section. Cross sections of the position of the round corner <NUM> that are separately perpendicular to two straight edges <NUM> connected to the round corner <NUM> are a second round corner cross section and a third round corner cross section.

The outer surface of the round corner <NUM> is presented as one arc on each first round corner cross section, and the inner surface of the round corner <NUM> is presented as one arc on each first round corner cross section. The outer surface of the round corner <NUM> is presented as one arc on each second round corner cross section, and the inner surface of the round corner <NUM> is presented as one arc on each second round corner cross section. The outer surface of the round corner <NUM> is presented as one arc on each third round corner cross section, and the inner surface of the round corner <NUM> is presented as one arc on each third round corner cross section.

As shown in <FIG>, the curved screen is attached to the inside or the outside of the cover panel. Specifically, the side display panel <NUM> is attached to the inside or the outside of the side panel <NUM> of the cover panel, the main display panel <NUM> is attached to the inside or the outside of the bottom panel <NUM> of the cover panel, the corner <NUM> is attached to a position at which two adjacent straight edges <NUM> of the bottom panel <NUM> intersect, and the corner <NUM> is located on the main surface of the electronic device. In other words, the corner <NUM> of the main display panel <NUM> is not attached to the inner surface of the round corner <NUM>, and the corner <NUM> is not bent as the inner surface of the round corner <NUM> is bent, preventing the corner <NUM> of the main display panel <NUM> from being bent in two directions if the inner surface of the round corner <NUM> is bent in the two directions at the same time. A shape and dimensions of the bottom panel <NUM> of the cover panel match those of the main display panel <NUM>, so that the main display panel <NUM> exactly covers the entire bottom panel <NUM>, and no part of the bottom panel <NUM> protrudes. For example, the shape and the dimensions of the bottom panel <NUM> of the cover panel are basically the same as those of the main display panel <NUM>.

A width of the side panel <NUM> of the cover panel may be equal to a width of the side display panel <NUM>.

As shown in <FIG> and <FIG>, the width of the side panel <NUM> of the cover panel may be greater than the width of the side display panel <NUM>, and a fringe part of the side panel <NUM> of the cover panel protrudes from the fringe of the side display panel <NUM>. In this case, as shown in <FIG>, when being assembled with the middle frame component <NUM>, the fringe of the side panel <NUM> of the cover panel is not prone to touch the fringe of the side display panel <NUM>.

The bottom panel <NUM> may be in a panel shape of a polygon. Specifically, the bottom panel <NUM> may be in a panel shape of a symmetric polygon, for example, a panel shape of a rectangle or a hexagon. Generally, a shape of the bottom panel <NUM> is the same as a shape of the main display panel <NUM>. For example, if the main display panel <NUM> is a rectangle, usually, the shape of the bottom panel <NUM> is also a rectangle.

The straight edge <NUM> of the bottom panel <NUM> is an edge extending along a straight line. The straight edge is an edge that extends along a straight line from a perspective of a naked eye but may bend to a specific extent or have a specific radian from a microscopic perspective.

For a cover panel with a rectangular bottom panel <NUM>, the bottom panel <NUM> has four straight edges <NUM>, and two opposite straight edges <NUM> fall into one group. Side panels <NUM> connected to one group of straight edges <NUM> may be symmetrically disposed, and side panels <NUM> connected to the other group of straight edges <NUM> may be symmetrically disposed, or may be asymmetrically disposed.

In this embodiment, the middle frame component <NUM> includes a plurality of slender side edges <NUM>, and the plurality of slender side edges <NUM> are connected together to form a frame. The side panel <NUM> of the cover panel and the side edges <NUM> are assembled together.

As shown in <FIG> and <FIG>, a view on the right in <FIG> is a three-dimensional view of an unbent screen (in this case, the screen is in a flat panel-shaped structure as a whole), and a view on the left is a three-dimensional view of a screen that is bent and attached to the inside of the cover panel. A shape and dimensions of the curved screen are basically the same as those of the cover panel. <FIG> is an overall structural diagram of the electronic device, and the electronic device in the figure is a mobile phone. <FIG> shows a front view, a top view, a bottom view, a left view, and a right view of the electronic device. In <FIG>, the curved screen, the cover panel, the middle frame component <NUM>, and the rear housing <NUM> can be seen, and because the cover panel is transparent, the curved screen can be seen from the outside.

Referring to <FIG>, the middle frame component <NUM> includes a wrap corner <NUM> and a wrap edge <NUM>. The middle frame component <NUM> is in a frame-shaped structure, the wrap corner <NUM> is located at a corner position of the frame-shaped structure, and the wrap edge <NUM> is connected between adjacent wrap corners <NUM>. The wrap corner <NUM> is in a three-dimensional arc-shaped structure. An inner surface of the wrap corner <NUM> is an arc surface, and an outer surface of the wrap corner <NUM> is also an arc surface. However, radians of the inner surface and the outer surface may be equal or unequal. Radians of all parts of the inner surface of the wrap corner <NUM> may be equal. Alternatively, radians of all parts of the inner surface of the wrap corner <NUM> may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small. Radians of all parts of the outer surface of the wrap corner <NUM> may be equal. Alternatively, radians of all parts of the outer surface of the wrap corner <NUM> may be unequal. For example, a radian of a center position is small, and a radian of a fringe position is large, or a radian of a center position is large, and a radian of a fringe position is small.

A cross section of a position of the wrap corner <NUM> in a direction parallel to the main surface of the electronic device is a first wrap corner cross section. Cross sections of the position of the wrap corner that are separately perpendicular to longitudinal directions of two wrap edges <NUM> connected to the wrap corner <NUM> are a second wrap corner cross section and a third wrap corner cross section.

The outer surface of the wrap corner <NUM> is presented as one arc on each first wrap corner cross section, and the inner surface of the wrap corner <NUM> is presented as one arc on each first wrap corner cross section. The outer surface of the wrap corner <NUM> is presented as one arc on each second wrap corner cross section, and the inner surface of the wrap corner <NUM> is presented as one arc on each second wrap corner cross section. The outer surface of the wrap corner <NUM> is presented as one arc on each third wrap corner cross section, and the inner surface of the wrap corner <NUM> is presented as one arc on each third wrap corner cross section.

As shown in <FIG> and <FIG>, the cover panel includes a bottom wall <NUM> and a plurality of side walls <NUM>. The bottom wall <NUM> is located on the main surface of the electronic device, and the side wall <NUM> is located on the side surface of the electronic device. An included angle between the bottom wall <NUM> and the side wall <NUM> ranges from <NUM> degrees to <NUM> degrees, for example, <NUM> degrees. There are a plurality of straight edges <NUM> at the fringe of the bottom wall <NUM>, and each straight edge <NUM> is correspondingly connected to one side wall <NUM>. A position at which the side wall <NUM> is connected to the straight edge <NUM> of the bottom wall <NUM> may be disposed in the form of a connection using an arc-shaped chamfer. In the embodiments depicted in <FIG> and <FIG>, the position at which the side wall <NUM> is connected to the straight edge <NUM> of the bottom wall <NUM> is in the form of a connection using an arc-shaped chamfer. Therefore, the straight edge <NUM> is not shown in the main view in <FIG>, and the straight edge <NUM> can be seen in the top view, the bottom view, the left view, and the right view. Certainly, the straight edge <NUM> of the curved screen cannot be seen in the main view, either, and the straight edge <NUM> can be seen in the top view, the bottom view, the left view, and the right view.

A part at which two adjacent straight edges <NUM> of the bottom wall <NUM> intersect is a cover panel corner <NUM>. There is a cover panel inner edge <NUM> and a cover panel outer edge <NUM> at the fringe of the side wall <NUM>, the cover panel inner edge <NUM> is connected to the straight edge <NUM> of the bottom wall <NUM>, and the cover panel outer edge <NUM> is located at the fringe of the cover panel <NUM>. Both the cover panel inner edge <NUM> and the cover panel outer edge <NUM> of the side wall <NUM> are connected to the cover panel corner <NUM>, and a segment connecting the cover panel outer edge <NUM> and the cover panel corner <NUM> is an arc-shaped transition edge.

For any cover panel corner <NUM> of the bottom wall <NUM>, bending radians of an arc-shaped transition edge on both sides of the cover panel corner <NUM> may be equal or unequal. Radians of all parts of the art-shaped transition edge may be equal, or radians of all parts of the arc-shaped transition edge may be unequal.

Because the side wall <NUM> has a specific thickness, the arc-shaped transition edge is presented as one arc on each first cross section, and the first cross section is a cross section perpendicular to a thickness direction of the side wall <NUM>. Radians of all parts of an arc that is of the arc-shaped transition edge and that is located on one first cross section may be equal or unequal. Radians of arcs of the arc-shaped transition edge that are located on different first cross sections may be equal or unequal.

The bottom wall <NUM> may be in a panel shape of a polygon. Specifically, the bottom wall <NUM> may be in a panel shape of a symmetric polygon, for example, a panel shape of a rectangle or a hexagon. Generally, a shape of the bottom wall <NUM> is the same as a shape of the main display panel <NUM>. For example, if the main display panel <NUM> is a rectangle, usually, the shape of the bottom wall <NUM> is also a rectangle.

The straight edge <NUM> of the bottom wall <NUM> is an edge extending along a straight line. The straight edge <NUM> is an edge that extends along a straight line from a perspective of a naked eye but may bend to a specific extent or have a specific radian from a microscopic perspective.

For a cover panel with a rectangular bottom wall <NUM>, the bottom wall <NUM> has four straight edges <NUM>, and two opposite straight edges <NUM> fall into one group. Side walls <NUM> connected to one group of straight edges <NUM> may be symmetrically disposed, and side walls <NUM> connected to the other group of straight edges <NUM> may be symmetrically disposed, or may be asymmetrically disposed.

As shown in <FIG>, the curved screen is attached to the inside or the outside of the cover panel. Specifically, the main display panel <NUM> is attached to the inside or the outside of the bottom wall <NUM> of the cover panel, the side display panel <NUM> is attached to the inside or the outside of the side wall <NUM> of the cover panel, the corner <NUM> of the main display panel <NUM> is located at a position of the cover panel corner <NUM>, and the corner <NUM> is located on the main surface of the electronic device. A shape and dimensions of the bottom wall <NUM> of the cover panel match those of the main display panel <NUM>, so that the main display panel <NUM> exactly covers the entire bottom wall <NUM>, and no part of the bottom wall <NUM> protrudes. For example, a shape and dimensions of the bottom wall <NUM> of the cover panel are basically the same as those of the main display panel <NUM>.

The cover panel and the middle frame component are assembled together. The wrap corner <NUM> of the middle frame component <NUM> is fastened to the cover panel corner <NUM> of the cover panel, and the wrap edge <NUM> of the middle frame component <NUM> is fastened to the side wall <NUM> of the cover panel. A width of the side wall <NUM> of the cover panel may be equal to a width of the side display panel <NUM>. In this case, the middle frame component <NUM> may fasten the side wall <NUM> of the cover panel and the side display panel <NUM> of the curved screen.

Alternatively, a width of the side wall <NUM> of the cover panel may be greater than a width of the side display panel <NUM>. In this case, a fringe part of the side wall <NUM> of the cover panel protrudes from the fringe of the side display panel <NUM>, and when being assembled with the middle frame component <NUM>, the fringe of the side wall <NUM> of the cover panel is not prone to touch the fringe of the side display panel <NUM>.

Based on the foregoing various implementations of the curved screen, for a curved screen with a main display panel of a symmetric polygon (for example, a rectangle), when the side display panel has been bent to the side surface of the electronic device, a cross section of the curved screen at a center position in a width direction is a first screen cross section, and a cross section of the curved screen at a center position in a length direction is a second screen cross section. The curved screen may have the following overall forms:.

Based on the foregoing various implementations of the cover panel, for a cover panel with a bottom wall or a bottom panel of a symmetrical polygon (for example, a rectangle), a cross section of the cover panel at a center position in a width direction is a first cover panel cross section, and a cross section of the cover panel at a center position in a length direction is a second cover panel cross section. The cover panel may have the following overall forms:.

Based on the foregoing various implementations of the middle frame component, for an electronic device with a main surface of a symmetrical polygon (for example, a rectangle), a cross section at a center position in a width direction of the electronic device is a first reference cross section, and a cross section at a center position in a length direction of the electronic device is a second reference cross section. The middle frame component may have the following overall forms:.

The terms "first" and "second" are merely intended for a purpose of description, and shall not be understood as an indication or implication of relative importance or implicit indication of the quantity of indicated technical features. Therefore, a feature limited by "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, unless otherwise stated, "a plurality of" means two or more than two.

Claim 1:
A curved screen assembly, wherein the curved screen assembly comprises a curved screen (<NUM>) and a cover panel (<NUM>), the curved screen (<NUM>) is attached to the cover panel (<NUM>), the curved screen (<NUM>) comprises a main display panel (<NUM>) and a plurality of side display panels (<NUM>), the cover panel (<NUM>) is in a box-shaped structure, the main display panel (<NUM>) is attached to a bottom surface of the box-shaped structure, the side display panel (<NUM>) is attached to a side surface of the box-shaped structure, and the curved screen (<NUM>) located on the inside of the cover panel (<NUM>) is in a form of a closed round or quasi-round polygon as a whole in a direction perpendicular to the bottom surface;
wherein an edge of the main display panel (<NUM>) is a straight edge (<NUM>), the main display panel (<NUM>) has a plurality of straight edges (<NUM>), a part at which two adjacent straight edges (<NUM>) intersect is a corner (<NUM>), each straight edge (<NUM>) is correspondingly connected to one side display panel (<NUM>), an edge that is of the side display panel (<NUM>) and that intersects with the straight edge (<NUM>) is an inner edge (<NUM>), there is an outer edge (<NUM>) at the fringe of the side display panel (<NUM>), the outer edge (<NUM>) is located at the fringe of the curved screen (<NUM>);
characterized in that
both the inner edge (<NUM>) and the outer edge (<NUM>) are connected to the corner (<NUM>) of the main display panel, and a segment connecting the outer edge (<NUM>) and the corner (<NUM>) is an arc-shaped transition edge.