CN116964540A - Display assembly and foldable device comprising same - Google Patents
Display assembly and foldable device comprising same Download PDFInfo
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- CN116964540A CN116964540A CN202180094105.6A CN202180094105A CN116964540A CN 116964540 A CN116964540 A CN 116964540A CN 202180094105 A CN202180094105 A CN 202180094105A CN 116964540 A CN116964540 A CN 116964540A
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- Prior art keywords
- display panel
- display
- redirecting
- winding roller
- surface layer
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- 238000004804 winding Methods 0.000 claims abstract description 49
- 239000002344 surface layer Substances 0.000 claims description 51
- 238000005452 bending Methods 0.000 claims description 9
- 239000010410 layer Substances 0.000 description 12
- 125000006850 spacer group Chemical group 0.000 description 6
- 230000007547 defect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 241000201246 Cycloloma atriplicifolium Species 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1624—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with sliding enclosures, e.g. sliding keyboard or display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
- H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
- H04M1/0235—Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts
- H04M1/0237—Sliding mechanism with one degree of freedom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
- H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
Abstract
A display assembly (1) is provided comprising a display panel (2) and a redirecting structure (3), the redirecting structure (3) comprising a rotatable winding roller (4) and at least one redirecting element (5). The display panel (2) is operatively connected to the winding roller (4), and the redirecting element (5) is for: when the display panel (2) is in the retracted position (P1), the display panel (2) is bent into at least three sections (2 a, 2b, 2 c) and a gap (6) is provided between adjacent sections (2 a, 2b, 2 c). At least three portions (2 a, 2b, 2 c) of the display panel (2) extend in parallel on at least three display planes (PL 1, PL2, PL 3) when the display panel (2) is in the retracted position (P1) and extend co-planar on one of the at least three display planes (PL 1, PL2, PL 3) when the display panel (2) is in the extended position (P2).
Description
Technical Field
The present invention relates to a display assembly including a flexible display panel and an apparatus including the display assembly.
Background
The size of a device such as a tablet or smart phone is an important consideration in the device design process. Users often require that the external dimensions of the device be as small as possible while still providing as large a display as possible.
This problem is solved by a foldable device comprising one or several housing elements interconnected by hinges and supporting a display panel. The housing element and the display panel may be folded together to provide a device which is as small as possible and/or in which the display panel is protected from external influences such as impact. Accordingly, when the device is deployed, as large a display as possible is provided. In other words, the foldable device is configured to have a variable width, which is minimized or maximized.
A first problem associated with such foldable devices is how to provide a device that can be folded to a minimum width without at the same time increasing the thickness of the device too much. A second problem relates to how to fold the display panel without increasing the tensile and shear stresses on the display.
The first problem is currently solved by using a rollable display which is rolled onto at least one roller within the housing. However, the second problem remains unsolved. In fact, when a rollable display is rolled onto a roll, the shear strain on the display increases as the display is wound onto the roll, increasing the risk of frictional wear and scratching of the display surface.
Disclosure of Invention
It is an object of the present invention to provide an improved display assembly. The above and other objects are achieved by the features of the independent claims. Other implementations are apparent in the dependent claims, the description and the drawings.
According to a first aspect, a display assembly is provided. The display assembly includes: a flexible display panel configured to: at least three portions of the display panel extend in parallel on at least three display planes when the display panel is in the retracted position, and at least three portions of the display panel extend coplanar on one of the at least three display planes when the display panel is in the extended position; a redirecting structure comprising a rotatable winding roller and at least one redirecting element. The display panel is operatively connected to the take-up roller. The redirecting element is used for: when the display panel is in the retracted position, the display panel is bent into at least three portions and a gap is provided between adjacent portions.
This approach makes it possible to reduce stress and strain on the flexible display panel and minimize defects and malfunctions of the display panel due to bending. By providing a gap between adjacent portions of the display panel, the display panel is enabled to move freely around the wind roller. The gap minimizes any stress in the display panel caused by direct contact of adjacent layers of the display panel.
In one possible implementation of the first aspect, the winding roller is a cylindrical element, which contributes to a space efficient solution for retracting the display panel.
In another possible implementation of the first aspect, the display panel has a larger interactive display area in the extended position than in the retracted position, facilitating a device with as small an external size as possible and as large a display as possible.
In another possible implementation of the first aspect, each redirection element is configured to bend the display panel such that the display panel encloses the redirection element at less than 360 ° and maintains the display panel curled or bent at less than 1 revolution, thereby minimizing excessive stress on the rollable display.
In another possible implementation of the first aspect, each redirection element comprises a fixed curved surface or a rotatable cylindrical roller, such that as little stress as possible is generated in the display panel when the display panel is bent.
In a further possible implementation of the first aspect, the winding roller and the redirecting element are arranged such that the central axis of the winding roller and the central axis of the redirecting element extend parallel to each other and to the display plane, contributing to a structure that is as thin and simple as possible.
In another possible implementation of the first aspect, the redirecting structure comprises at least two redirecting elements and the winding roller is arranged between the redirecting elements in a direction perpendicular to the central axis and parallel to the display plane, achieving a compact structure.
In another possible implementation of the first aspect, the central axis of the winding roller and the central axis of the redirecting element extend parallel to each other in a plane of symmetry, which configuration provides as thin a structure as possible.
In a further possible implementation of the first aspect, the winding roller and the redirecting elements are arranged such that the central axis of the winding roller is offset with respect to the central axis of the at least one redirecting element in a direction perpendicular to the display plane, so that identical components can be used and the required assembly tolerances are less stringent.
In another possible implementation manner of the first aspect, the radius of curvature of the first redirecting element and the radius of curvature of the rotatable winding roller are greater than or equal to the radius of curvature of the rotatable winding roller, and the radius of curvature of the second redirecting element is greater than the radius of curvature of the first redirecting element, so that the display panel may be bent into portions that extend parallel to each other but do not contact each other.
In another possible implementation of the first aspect, the redirecting structure comprises at least one further redirecting element, each further redirecting element being for bending the display panel into at least one further display panel section, so that the display panel can be bent into as many sections as required in a particular device configuration.
In another possible implementation of the first aspect, the first end of the display panel is operatively connected to the winding roller by at least one of a bendable interconnect element and a first surface layer of the display panel, and wherein the interconnect element and/or the first surface layer is configured to: when the display panel is moved from the extended position to the retracted position, it is wound around the winding roller. This arrangement guides the movement of the display panel without causing excessive stress on the display panel.
In another possible implementation of the first aspect, the interconnection element comprises a membrane for extending from or forming the first surface layer of the display panel, which provides a space efficient solution for accommodating the display panel, in particular when in the retracted position.
In another possible implementation of the first aspect, the second end of the display panel is for engagement by a user to move the display assembly along the primary display movement axis between the retracted position and the extended position, facilitating simple and direct movement of the display panel.
In another possible implementation of the first aspect, the display assembly further comprises a driving device for moving the display assembly between the retracted position and the extended position, facilitating an automatic movement of the display panel.
In another possible implementation of the first aspect, the redirecting structure further comprises at least one elastic component for interconnecting the second surface layer of the display panel with at least one of the interconnection element and the first surface layer of the display panel, guiding the display panel around the redirecting element, and facilitating bending of the display panel around the redirecting element.
In another possible implementation of the first aspect, the elastic assembly comprises a flexible film configured with a radius of curvature that is larger than the radius of curvature of the first redirecting element, the flexible film allowing different layers of the display panel to stretch to different extents.
In another possible implementation of the first aspect, the first surface layer of the display panel has a smaller radius of curvature than the second surface layer of the display panel, facilitating bending of the display panel without the different layers of the display panel releasing or otherwise deforming from each other.
In another possible implementation of the first aspect, a length of the second surface layer of the display panel along the main display movement axis is different from a corresponding length of the first surface layer of the display panel such that the display panel stiffness gradually increases.
In another possible implementation manner of the first aspect, the length of the second surface layer is larger than the corresponding length of the first surface layer, so that a smooth transition of the display panel on the redirecting element is facilitated.
In another possible implementation of the first aspect, the length of any intermediate display panel layer located between the first surface layer and the second surface layer increases progressively from the first surface layer to the second surface layer such that the display panel stiffness increases progressively.
In another possible implementation of the first aspect, the redirecting structure further comprises a retraction mechanism connected to the winding roller and at least one of the interconnection element and the first surface layer of the display panel, facilitating retraction of the display panel, while still allowing a user to easily overcome the force provided by the elastic element when removing the display panel.
In another possible implementation of the first aspect, the retraction mechanism includes a motor that facilitates automatic operation of the display assembly.
In another possible implementation of the first aspect, the retraction mechanism comprises a resilient element, preferably a spring, which is a simple and reliable solution.
In another possible implementation of the first aspect, the redirecting structure comprises a plurality of spacers extending radially from the redirecting element, the spacers providing clearance, providing greater flexibility when relating to the configuration of the winding roller and the redirecting element.
In another possible implementation of the first aspect, the spacers comprise glass or plastic material and/or have a cylindrical or spherical cross section, reducing deformations generated in the display panel when the display panel is bent.
According to a second aspect there is provided a device comprising a housing and a display assembly according to the above. The display panel of the display assembly is for: extends to the main surface area of the housing when the display panel is in the retracted position and extends beyond the surface area of the housing when the display panel is in the extended position.
This solution makes it possible to reduce stress and strain on the flexible display panel and to minimize defects and malfunctions of the display panel due to bending, providing a more durable device.
These and other aspects will be apparent from and elucidated with reference to the embodiments described hereinafter.
Drawings
In the following detailed description of the invention, various aspects, embodiments and implementations are explained in more detail with reference to the exemplary embodiments shown in the drawings, in which:
FIG. 1 illustrates a side view of an example device with a display panel of the device in a retracted position, according to an embodiment of the invention;
FIG. 2 shows a side view of the example shown in FIG. 1 with the display panel of the device in an extended position;
FIG. 3 illustrates a side view and detailed partial side view of an exemplary display assembly according to an embodiment of the present invention;
FIG. 4 illustrates a side view of an example device with a display panel of the device in a retracted position, according to an embodiment of the invention;
fig. 5 shows a side view of the example of fig. 4 with the display panel of the device in an extended position.
Detailed Description
Fig. 4 and 5 show a device 12 comprising a housing 13 and a display assembly 1. The device may be a tablet, smart phone, television, or similar device. The display panel 2 of the display assembly 1 is for: when the display panel 2 is in the retracted position P1, it extends to the main surface area of the housing 13 as shown in fig. 4, and when the display panel 2 is in the extended position P2, it extends beyond the surface area of the housing 13 as shown in fig. 5. Preferably, the display panel 2 has a larger interactive display area when in the extended position P2 than when in the retracted position P1.
The display assembly 1 comprises a flexible display panel 2. The flexible display panel 2 is configured to: at least three portions 2a, 2b, 2c of the display panel 2 extend in parallel over at least three display planes PL1, PL2, PL3 when the display panel 2 is in the retracted position P1, and at least three portions 2a, 2b, 2c of the display panel 2 extend co-planar over one of the at least three display planes PL1, PL2, PL3 when the display panel 2 is in the extended position P2. The display assembly 1 further comprises a redirecting structure 3. The redirecting structure 3 comprises a rotatable winding roller 4 and at least one redirecting element 5.
The display panel 2 is operatively connected to a take-up roll 4. The redirection element 5 is for: when the display panel 2 is in the retracted position P1, the display panel 2 is bent into at least three portions 2a, 2b, 2c and a gap 6 is provided between adjacent portions 2a, 2b, 2c.
The display assembly 1 comprises a flexible display panel 2. The flexible display panel, also referred to as a rollable display panel, can be bent and moved by being rolled to different positions (e.g., a retracted position P1 and an extended position P2). The current rollable display panel 2 has limited stretchability. For example, organic light-emitting diode (OLED) display panels typically have a stretchability of less than 1%, while conventional cover windows for such rollable display panels typically have a stretchability of less than 2%. The display panel is subjected to high tensile stress and/or high shear strain when a force is applied to the display panel to curl the display panel to a partially or fully retracted or extended position.
The display panel 2 is configured to be bendable into at least three sections 2a, 2b, 2c extending in parallel over at least three display planes PL1, PL2, PL3, as shown in fig. 1 and 4. When the display panel 2 is in the retracted position P1, the display panel 2 is bent into at least three portions 2a, 2b, 2c. When the display panel 2 is in the extended position P2, at least three portions 2a, 2b, 2c of the display panel 2 extend co-planarly on one of at least three display planes PL1, PL2, PL 3. Fig. 2 and 5 show three portions 2a, 2b, 2c extending in a plane PL 1.
The plane PL1 extends through one outermost element of the device 12, i.e. within at least one portion 2a, 2b, 2c of the display panel 2. The plane PL2 may extend through the other outermost element of the device 12, or adjacent to the other outermost element of the device 12, i.e., the back cover of the device 12. Plane PL3 extends within device 12, preferably between planes PL1 and PL 2. As described above, the display panel 2 may be bent into at least three portions 2a, 2b, 2c, any additional portion extending on an additional plane extending parallel to the display planes PL1, PL2, PL 3.
The display assembly 1 further comprises a redirecting structure 3, the redirecting structure 3 being for facilitating extension and retraction of the display panel 2 and for bending the display panel 2 into the above-mentioned at least three parts 2a, 2b, 2c. The redirecting structure 3 comprises a rotatable winding roller 4 and at least one redirecting element 5.
The display panel 2 is operatively connected to a take-up roll 4. The winding roller 4 may comprise a redirecting element 5, the redirecting element 5 being preferably arranged such that it is coaxial with the winding roller 4 and has a larger radius than the winding roller 4.
Each redirection element 5 is for: when the display panel 2 is in the retracted position P1, the display panel 2 is bent into two portions 2a, 2b, 2c.
Furthermore, the redirection element 5 serves to provide a gap 6 between adjacent sections 2a, 2b, 2c. The gap may be an air gap. Alternatively, gaps are created between the portions 2a, 2b, 2c of the display panel 2 using a low viscosity fluid. The gap ensures that the maximum shear strain on the display panel 2 when bent is the same for any number of layers within the display panel and is equal to the shear strain on the display panel 2 comprising only a single layer.
At least one redirecting element 5 may comprise a plurality of spacers extending radially from a main surface of the redirecting element 5 (not shown), which spacers provide the gaps 6. The spacer may comprise glass or plastic material and/or have a cylindrical or spherical cross-section.
Each redirection element 5 may be used to bend the display panel 2 such that the display panel 2 encloses the redirection element 5 at less than 360 °, in other words such that the display panel 2 is not wrapped around the redirection element 5, but extends along only a portion of the peripheral surface of the redirection element 5.
Each redirecting element 5 may comprise a fixed curved surface (not shown) or a rotatable cylindrical roller. The stationary curved surface may be a stationary cylinder.
The winding roller 4 and the redirecting element 5 are arranged such that the central axis of the winding roller 4 and the central axis of the redirecting element 5 extend parallel to each other and to the display plane PL 1. The central axis of the winding roller 4 and the central axis of the redirecting element 5 may extend parallel to each other on a plane of symmetry, as shown in fig. 1 to 3.
The redirecting structure 3 may comprise at least two redirecting elements 5 and the winding roller 4 may be arranged between the redirecting elements 5 in a direction perpendicular to the central axis and parallel to the display plane PL1, as shown in the figure. Any other suitable configuration is also possible. The winding roller 4 and the redirecting element 5 may be arranged such that the central axis of the winding roller 4 is offset relative to the central axis of the at least one redirecting element 5 in a direction perpendicular to the display planes PL1, PL2, PL3, as shown in fig. 4 and 5.
As shown in fig. 1 to 3, the redirecting structure 3 may comprise a first redirecting element 5a and a second redirecting element 5b. The redirecting structure 3 may comprise at least one further redirecting element 5, each further redirecting element 5 being for bending the display panel 2 into at least one further display panel section.
The radius of curvature r1 of the first redirecting element 5a may be greater than or equal to the radius of curvature r2 of the rotatable winding roller 4 than the radius of curvature r2 of the rotatable winding roller 4. The radius of curvature r3 of the second redirecting element 5b may be greater than the radius of curvature r1 of the first redirecting element 5 a. These possible differences in radius of curvature are such that there is a gap between adjacent portions 2a, 2b, 2c of the display panel 2 corresponding to the size of the gap or gaps.
The first end of the display panel 2 may be operatively connected to a winding roller 4.
A second end of the display panel 2 may be adapted to be engaged by a user to move the display assembly 1 along the main display movement axis a between the retracted position P1 and the extended position P2. The second end may comprise a pull rod which in turn comprises a camera, microphone or similar means. The display assembly 1 may further comprise driving means, e.g. an electronic motor, for moving the display assembly 1 between the retracted position P1 and the extended position P2.
The first end of the display panel 2 may be operatively connected to the winding roller 4 by a bendable interconnect element 7, as shown in fig. 1-3. The first end of the display panel 2 may be operatively connected to the winding roller 4 via a first surface layer 8 of the display panel 2. The interconnection element 7 and/or the first surface layer 8 may be used for: when the display panel 2 moves from the extended position P2 to the retracted position P1, it is wound on the winding roller 4.
The first surface layer 8 may be the innermost layer of the display panel 2, i.e. the surface comprising the display panel 2, which surface is in direct contact with the winding roller 4 when the display panel 2 is retracted and partly wound on the winding roller 4, and optionally with the first redirecting element 5a when the first redirecting element 5a is arranged such that the first redirecting element changes the direction of the display panel 2 and after the winding roller 4 divides the display panel 2 into parts 2a, 2b, 2c.
The interconnect element 7 may comprise a film for extending from the first surface layer 8 of the display panel 2 or forming the first surface layer 8 of the display panel 2.
The redirecting structure 3 may further comprise at least one elastic component 9, which elastic component 9 is used for interconnecting the second surface layer 10 of the display panel 2 with at least one of the interconnection element 7 and the first surface layer 8 of the display panel 2. The first surface layer 8 and the second surface layer 10 together form both main surfaces of the display panel 2. When the first surface layer 8 is the innermost layer and the second surface layer 10 is the outermost layer, the first surface layer 8 of the display panel 2 may have a smaller radius of curvature than the second surface layer 10 of the display panel 2, as shown in fig. 3. Accordingly, when the first surface layer 8 is the outermost layer and the second surface layer 10 is the innermost layer (not shown), the first surface layer 8 may have a larger radius of curvature than the second surface layer 10.
The elastic assembly 9 may comprise a flexible membrane configured with a radius of curvature r4 larger than the radius of curvature r1 of the first redirecting element 5 a.
The elastic member 9 may comprise rubber, silicone or any other suitable elastomer.
The length of the second surface layer 10 of the display panel 2 along the main display movement axis a may be different from the corresponding length of the first surface layer 8 of the display panel 2. As shown in fig. 3, the length of the second surface layer 10 may be greater than the corresponding length of the first surface layer 8. In addition, in the case of the optical fiber,
the length of any intermediate display panel layer located between the first surface layer 8 and the second surface layer 10 increases from the first surface layer 8 to the second surface layer 10. Thus, the edges of the different layers of the display panel 2 may be somewhat offset.
The redirecting structure 3 may further comprise a retraction mechanism 11 connected to the winding roller 4 and at least one of the interconnection element 7 and the first surface layer 8 of the display panel 2. The retraction mechanism 11 may comprise an elastic element, preferably a spring. The driving means may include a retracting mechanism 11 and an electronic motor of the driving means for performing retraction and extension of the display assembly.
Various aspects and implementations have been described herein in connection with various embodiments. However, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed subject matter, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Reference signs used in the claims shall not be construed as limiting the scope. Unless otherwise indicated, the drawings (e.g., cross-hatching, arrangement of parts, proportion, degree, etc.) should be read together with the specification, and should be considered a portion of the entire written description of this invention. The terms "horizontal," "vertical," "left," "right," "upper" and "lower," as well as adjectives and derivatives thereof (e.g., "horizontally," "rightward," "upward," etc.), as used herein, refer to the direction of the structure as shown, as if the particular drawing were to face the reader. Similarly, the terms "inwardly" and "outwardly" generally refer to the direction of a surface relative to its axis of elongation or axis of rotation (as the case may be).
Claims (16)
1. A display assembly (1), characterized by comprising:
-a flexible display panel (2) configured to: when the display panel (2) is in the retracted position (P1),
at least three portions (2 a, 2b, 2 c) of the display panel (2) are arranged in at least three display planes (PL 1),
PL2, PL 3) and said at least three portions (2 a, 2b, 2 c) of said display panel (2) extend coplanar on one of said at least three display planes (PL 1, PL2, PL 3) when said display panel (2) is in an extended position (P2);
-a redirecting structure (3) comprising a rotatable winding roller (4) and at least one redirecting element (5), wherein
The display panel (2) is operatively connected to the winding roller (4),
the redirection element (5) is for: -bending the display panel (2) into the at least three parts (2 a, 2b, 2 c) when the display panel (2) is in the retracted position (P1), and
a gap (6) is provided between adjacent sections (2 a, 2b, 2 c).
2. The display assembly (1) according to claim 1, wherein each redirection element (5) is adapted to bend the display panel (2) such that the display panel (2) encloses the redirection element (5) at less than 360 °.
3. The display assembly (1) according to claim 1 or 2, wherein each redirecting element (5) comprises a fixed curved surface or a rotatable cylindrical roller.
4. The display assembly (1) according to any of the preceding claims, wherein the winding roller (4) and the redirecting element (5) are arranged such that a central axis of the winding roller (4) and a central axis of the redirecting element (5) extend parallel to each other and to the display plane (PL 1).
5. Display assembly (1) according to claim 4, characterized in that the redirecting structure (3) comprises at least two redirecting elements (5) and that the winding roller (4) is arranged between the redirecting elements (5) in a direction perpendicular to the central axis and parallel to the display plane (PL 1).
6. A display assembly (1) according to claim 5, characterized in that the winding roller (4) and the redirecting element (5) are arranged such that the central axis of the winding roller (4) is offset with respect to the central axis of at least one redirecting element (5) in a direction perpendicular to the display plane (PL 1, PL2, PL 3).
7. The display assembly (1) according to any of the preceding claims, wherein a radius of curvature (r 1) of a first redirecting element (5 a) and a radius of curvature (r 2) of the rotatable winding roller (4) are larger than or equal to a radius of curvature (r 2) of the rotatable winding roller (4), and a radius of curvature (r 3) of a second redirecting element (5 b) is larger than the radius of curvature (r 1) of the first redirecting element (5 a).
8. The display assembly (1) according to any of the preceding claims, wherein the redirecting structure (3) comprises at least one further redirecting element (5), each further redirecting element (5) being for bending the display panel (2) into at least one further display panel section.
9. The display assembly (1) according to any of the preceding claims, wherein the first end of the display panel (2) is operatively connected to the winding roller (4) by at least one of a bendable interconnect element (7) and a first surface layer (8) of the display panel (2), and wherein
-said interconnection element (7) and/or said first surface layer (8) being for: when the display panel (2) moves from the extended position (P2) to the retracted position (P1), it is wound on the winding roller (4).
10. A display assembly (1) according to claim 9, characterized in that the interconnect element (7) comprises a film for extending from the first surface layer (8) of the display panel (2) or forming the first surface layer (8) of the display panel (2).
11. The display assembly (1) according to claim 9 or 10, wherein the redirecting structure (3) further comprises at least one elastic component (9), the elastic component (9) being for interconnecting the second surface layer (10) of the display panel (2) with at least one of the interconnection element (7) and the first surface layer (8) of the display panel (2).
12. The display assembly (1) according to claim 11, wherein the elastic assembly (9) comprises a flexible film configured with a radius of curvature (r 4) larger than the radius of curvature (r 1) of the first redirecting element (5 a).
13. The display assembly (1) according to claim 11 or 12, wherein the length of the second surface layer (10) of the display panel (2) along a main display movement axis (a) is different from the corresponding length of the first surface layer (8) of the display panel (2).
14. The display assembly (1) according to any of the preceding claims, wherein the redirecting structure (3) further comprises a retraction mechanism (11) connected to the winding roller (4) and at least one of the interconnection element (7) and the first surface layer (8) of the display panel (2).
15. The display assembly (1) according to claim 14, wherein the retraction mechanism (11) comprises a resilient element, preferably a spring.
16. Device (12) characterized by comprising a housing (13) and a sum display assembly (1) according to any one of claims 1 to 15,
the display panel (2) of the display assembly (1) is for: extends to a main surface area of the housing (13) when the display panel (2) is in the retracted position (P1), and
when the display panel (2) is in the extended position (P2), it extends beyond the surface area of the housing (13).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2021/058688 WO2022207115A1 (en) | 2021-04-01 | 2021-04-01 | Display assembly and foldable apparatus comprising display assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116964540A true CN116964540A (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180094105.6A Pending CN116964540A (en) | 2021-04-01 | 2021-04-01 | Display assembly and foldable device comprising same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116964540A (en) |
| WO (1) | WO2022207115A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016018300A1 (en) * | 2014-07-30 | 2016-02-04 | Hewlett-Packard Development Company, L.P. | Display with shape changing support panel |
| KR102630108B1 (en) * | 2016-10-04 | 2024-01-26 | 삼성디스플레이 주식회사 | Display device |
| CN110047385A (en) * | 2019-04-30 | 2019-07-23 | 武汉华星光电半导体显示技术有限公司 | Flexible display apparatus |
-
2021
- 2021-04-01 WO PCT/EP2021/058688 patent/WO2022207115A1/en active Application Filing
- 2021-04-01 CN CN202180094105.6A patent/CN116964540A/en active Pending
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| Publication number | Publication date |
|---|---|
| WO2022207115A1 (en) | 2022-10-06 |
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