CN116434669A - Display device and terminal equipment - Google Patents
Display device and terminal equipment Download PDFInfo
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- CN116434669A CN116434669A CN202310687397.5A CN202310687397A CN116434669A CN 116434669 A CN116434669 A CN 116434669A CN 202310687397 A CN202310687397 A CN 202310687397A CN 116434669 A CN116434669 A CN 116434669A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000000670 limiting effect Effects 0.000 claims description 37
- 239000000696 magnetic material Substances 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 abstract description 32
- 230000033001 locomotion Effects 0.000 abstract description 18
- 238000002788 crimping Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
- G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application discloses a display device and terminal equipment, wherein the display device comprises a shell, a display module and a curling unit, the curling unit at least comprises a curling shaft, the curling shaft is connected with the display module, the display module curls or expands around the curling shaft, the display device further comprises a transmission unit, the transmission unit is connected with the curling shaft, and in the process that the display module curls around the curling shaft, the transmission unit drives the curling shaft to longitudinally move towards one side far away from the display module; the transmission unit is arranged in the display device, the transmission unit is utilized to drive the rolling shaft to longitudinally move towards one side far away from the display module, and the longitudinal movement of the rolling shaft compensates the stress of the rolling junction of the display module, so that the stress of the rolling junction of the display module is reduced, and the technical problem that the existing display device has overlarge stress of the rolling junction is solved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device and terminal equipment.
Background
The existing large-size crimping application has the defects of larger crimping radius, fewer crimping turns and larger storage volume, and cannot fully embody the technical advantages of flexible crimping of the OLED panel; the large-size flexible screen is required to realize smaller storage volume, smaller curl radius is needed, but too small curl radius is needed, besides the problem that the forming stress of the display module is too high in a completely curled state, the junction position of the display module which is curled and the display module which is not curled is called as curl junction, and larger stress exists at the curl junction due to pulling along with gradual accumulation of the radius of the shaft in the curling motion process, so that the film material in the display module is cracked or falls off.
Therefore, the existing display device has the technical problem of overlarge stress at the curled juncture.
Disclosure of Invention
The embodiment of the application provides a display device and terminal equipment, which can relieve the technical problem that the existing display device has overlarge stress at a curled juncture.
An embodiment of the present application provides a display device, including:
a housing;
a display module;
the curling unit at least comprises a curling shaft, the curling shaft is connected with the display module, and the display module is curled or unfolded around the curling shaft;
the display device further comprises a transmission unit, wherein the transmission unit is connected with the curling shaft, and the transmission unit drives the curling shaft to longitudinally move towards one side far away from the display module in the process of curling and accommodating the display module around the curling shaft.
Optionally, in some embodiments of the present application, the display module includes a rolling section to be rolled, a flat section not participating in rolling, the rolling section has a length L, the display module has a thickness z, an initial radius r of the rolling shaft, a total time required for completing rolling is T, a time spent for rolling is T, a distance of displacement of the rolling shaft toward a side far from the display module is y, wherein,
。
optionally, in some embodiments of the present application, the housing includes a supporting base plate and a horizontal limiting plate, the horizontal limiting plate is disposed above the supporting base plate, the display module is disposed on a side of the horizontal limiting plate away from the supporting base plate, and the side of the horizontal limiting plate facing the side of the curling shaft is disposed in butt joint with the curling shaft.
Optionally, in some embodiments of the present application, an edge of the side of the horizontal limiting plate away from the curl shaft exceeds an edge corresponding to the display module, or an edge of the side of the horizontal limiting plate away from the curl shaft is aligned with an edge corresponding to the display module.
Optionally, in some embodiments of the present application, the thickness of the horizontal stop plate is greater than or equal to the distance y of displacement.
Optionally, in some embodiments of the present application, the display module includes a magnetic layer, a preparation material of the magnetic layer is a first magnetic material, a preparation material of the horizontal limiting plate is a second magnetic material, and a polarity of the first magnetic material is opposite to a polarity of the second magnetic material.
Optionally, in some embodiments of the present application, the transmission unit includes a motor, a connecting part, and a traction part, where the motor and the traction part are disposed on the support base plate, the traction part is connected with the curling shaft through the connecting part, and the motor drives the traction part to drive the curling shaft to move longitudinally toward a side far away from the display module.
Optionally, in some embodiments of the present application, the connecting component includes a connecting rope and a pulley block, the connecting rope bypasses the pulley block, the traction component includes a slider, a slide is provided on the support base plate, the slider is disposed on the slide and slides along the slide, one end of the connecting rope is connected with the slider, and the other end of the connecting rope is connected with the curling shaft.
Optionally, in some embodiments of the present application, when the curling section is curled completely, the display module is curled four times around the curling axis, and a stress at a curling interface between the curling section and the flattening section is less than 20 mpa.
An embodiment of the present application provides a terminal device, where the terminal device includes a display apparatus as described in any one of the foregoing embodiments.
The beneficial effects are that: the transmission unit is arranged in the display device, the transmission unit is utilized to drive the curling shaft to longitudinally move towards one side far away from the display module, the stress of the curling junction of the display module is compensated through the longitudinal movement of the rolling shaft, the stress of the curling junction of the display module is reduced, and the technical problem that the stress of the curling junction of the existing display device is overlarge is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a first cross-sectional schematic view of a display device provided herein;
FIG. 2 is a schematic view of the motion of a crimping shaft in a longitudinal direction in a display device provided herein;
fig. 3 is a second cross-sectional schematic view of the display device provided herein.
Reference numerals illustrate:
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
Referring to fig. 1, the display device 1 provided in the present application includes a housing 10, a display module 20, and a curling unit 30, where the curling unit 30 includes at least a curling shaft, the curling shaft is connected with the display module 20, and the display module 20 curls or expands around the curling shaft, and the display device 1 further includes a transmission unit 40, where the transmission unit 40 is connected with the curling shaft, and in the process of curling and accommodating the display module 20 around the curling shaft, the transmission unit 40 drives the curling shaft to longitudinally move towards a side far away from the display module 20.
Wherein the longitudinal movement may be a downward movement or a movement in a direction perpendicular to the display module 20.
It will be appreciated that the crimping shaft moves longitudinally in a direction approaching the display module when the display module is unfolded.
In this embodiment, the transmission unit 40 is disposed in the display device 1, and the transmission unit 40 is used to drive the curling shaft to move longitudinally towards a side far away from the display module 20, and the stress at the curling junction of the display module 20 is compensated by the longitudinal movement of the curling shaft, so that the stress at the curling junction of the display module 20 is reduced, and the technical problem that the stress at the curling junction of the existing display device 1 is too large is solved.
The technical solutions of the present application will now be described with reference to specific embodiments.
In this embodiment, the transmission unit 40 includes a motor 401, a connecting rope 4031, a pulley block 4032, a slider, and a slideway, where the transmission unit 40 may be any other component capable of driving the winding shaft to move longitudinally towards a side far away from the display module 20, so long as the transmission unit 40 can satisfy a condition of providing a longitudinal traction force for the winding shaft.
In one embodiment, referring to fig. 2, the display module 20 includes a rolling section to be rolled, a flat section not participating in rolling, the rolling section has a length L, the display module 20 has a thickness z, and the rolling shaft is at the beginningThe starting radius is r, the total time required to complete the crimping is T, the current time taken for crimping is T, the displacement of the crimping shaft longitudinally moving towards the side remote from the display module 20 is of the magnitude y, wherein,
。
wherein the total time T required for completing the crimping can be set according to the requirement.
Wherein the length of the flat section is S.
Wherein the time taken for the current curl is t, which means: the time taken from the curl start time to the current time.
It will be appreciated that when t=t, the curled section is fully curled.
In the present embodiment, the displacement y is defined to satisfy
And the longitudinal displacement of the rolling shaft is utilized to compensate the rolling junction of the rolling shaft, so that the stress of the rolling junction is reduced.
In one embodiment, the housing 10 includes a supporting base plate 101 and a horizontal limiting plate 102, the horizontal limiting plate 102 is disposed above the supporting base plate 101, the display module 20 is disposed on a side, away from the supporting base plate 101, of the horizontal limiting plate 102, and a side, facing the curling shaft, of the horizontal limiting plate 102 is disposed in abutment with the curling shaft.
The horizontal limiting plate 102 is used for supporting the display module 20, and the horizontal limiting plate 102 also plays a role in limiting the curling shaft, so as to prevent the curling shaft from generating displacement in the horizontal direction.
It will be appreciated that, during the process of crimping the display module 20, the longitudinal movement of the crimping shaft toward the side far from the display module 20 can reduce the stress at the crimping interface, but the movement of the crimping shaft along the horizontal direction does not have the effect of reducing the stress at the interface, so that the horizontal displacement of the crimping shaft can be avoided by providing the horizontal limiting plate 102.
In one embodiment, the edge of the side of the horizontal limiting plate 102 away from the curl shaft is beyond the edge corresponding to the display module 20, or the edge of the side of the horizontal limiting plate 102 away from the curl shaft is aligned with the edge corresponding to the display module 20.
In this embodiment, the edge of the display module 20 does not exceed the edge of the horizontal limiting plate 102, so that the horizontal limiting plate 102 can better support the display module 20.
In one embodiment, the thickness d of the horizontal stop plate 102 is greater than or equal to the distance y of displacement.
It will be appreciated that since the displacement of the curl shaft during its longitudinal movement is limited by the lateral surface of the horizontal stop plate 102, the thickness d of the horizontal stop plate 102 is further defined to ensure that the curl shaft is limited by the lateral surface of the horizontal stop plate 102 during its movement.
Further, the thickness d of the horizontal limiting plate 102 is greater than or equal to y+r.
In this embodiment, by limiting the thickness of the horizontal limiting plate 102, the horizontal limiting plate 102 can always provide a limiting effect in a horizontal direction for the curling shaft during the longitudinal movement of the curling shaft, so that the curling shaft only moves in the longitudinal direction and does not move in the horizontal direction, thereby controlling the variable and reducing the stress at the curling junction of the display module 20.
In an embodiment, referring to fig. 3, the display module 20 includes a magnetic layer 201, a first magnetic material is made of a preparation material of the magnetic layer 201, a second magnetic material is made of a preparation material of the horizontal limiting plate 102, and a polarity of the first magnetic material is opposite to a polarity of the second magnetic material.
The magnetic layer 201 is disposed on the bottom surface of the display module 20, which is close to the horizontal limiting plate 102, and the magnetic layer 201 is in surface contact with the horizontal limiting plate 102.
At least one of the first magnetic material and the second magnetic material may be an electromagnetic material having magnetism in an energized state.
The polarity of the first magnetic material may be N pole/S pole, and the polarity of the second magnetic material may be S pole/N pole.
In this embodiment, by disposing the magnetic layer 201 in the display module 20, the horizontal limiting plate 102 generates suction force on the display module 20, thereby improving the flatness of the surface of the display module 20.
In one embodiment, the transmission unit 40 includes a motor 401, a connecting member 403, and a traction member 402, where the motor 401 and the traction member 402 are disposed on the support base plate 101, the traction member 402 is connected to the curl shaft through the connecting member 403, and the motor 401 drives the traction member 402 to drive the curl shaft to move longitudinally toward a side far away from the display module 20.
It will be appreciated that the transmission unit 40 is required to move the crimp shaft in a longitudinal direction, and that the transmission unit 40 is required to include a motor 401 for driving, a traction member 402 for providing a pulling force, and a connection member 403 for connecting the traction member 402 and the crimp shaft.
Further, the rate of movement of the traction member 402 may be the same as the rate of movement of the crimp shaft.
In this embodiment, the motor 401 drives the traction component 402 to move, and the traction component 402 drives the rolling shaft to move through the connecting component 403, so that the rolling shaft moves longitudinally while the horizontal limiting plate 102 horizontally limits.
In one embodiment, the connection member 403 includes a connection rope 4031 and a pulley block 4032, the connection rope 4031 is wound around the pulley block 4032, the traction member 402 includes a slider, a slide way is provided on the support base plate 101, the slider is disposed on the slide way and slides along the slide way, one end of the connection rope 4031 is connected with the slider, and the other end of the connection rope 4031 is connected with the curling shaft.
In one embodiment, when the display module 20 is curled four times around the curling axis, the stress at the curling interface of the curling section and the flattening section is less than 20 mpa.
Wherein, the crimping juncture refers to: the display module 20 is curled and arranged at the boundary position of the display module 20 which is not curled.
When the display module 20 starts to curl around the curling axis, the start end of the display module 20 is located at the curling junction, and when the display module 20 surrounds the curling axis for four circles, the end of the display module 20 is also located at the curling junction.
In one embodiment, the stress at the crimp interface is 13 mpa when the display module 20 is crimped four times around the crimp axis as measured by simulation experiments.
Wherein the in-loop maximum stress is 90 megapascals; the maximum stress in the ring refers to the maximum stress value existing in each area of the flexible display module 20 in a curled state.
It can be understood that, according to the simulation test, the stress at the curl junction can be greatly compensated by making the curl shaft generate the longitudinal displacement at the same time during the curl process of the display module 20, specifically, taking the curl of the display module 20 as an example, the following table shows the stress comparison of the curl junction before compensation and after compensation and the comparison of the maximum stress in the circle, so that the stress at the curl junction is reduced to a greater extent, and the display module 20 at the curl junction is prevented from generating cracks or falling off between the films.
An embodiment of the present application provides a stress compensation method, which adopts the display device 1 according to any one of the embodiments, and includes:
step one: providing a transmission unit 40, connecting the transmission unit 40 with the curling shaft, and driving the curling shaft to longitudinally move towards one side far away from the display module 20 through the transmission unit 40;
step two: during the longitudinal movement of the display module 20, the distance y of the displacement is continuously adjusted, and the displacement y of the longitudinal movement of the curling shaft needs to satisfy
。
The display module 20 includes a rolling section to be rolled, a flattening section not participating in rolling, the length of the rolling section is L, the thickness of the display module 20 is z, the initial radius of the rolling shaft is r, the total time required for finishing rolling is T, the time spent for rolling is T, the distance of displacement of the rolling shaft moving longitudinally towards one side far away from the display module 20 is y, and the rolling process of the display module 20 is performed.
The application also provides a curled screen mobile phone and a terminal device, wherein the curled screen mobile phone and the terminal device all comprise the display device, and the display device is not repeated here.
The display device comprises a shell, a display module and a curling unit, wherein the curling unit at least comprises a curling shaft, the curling shaft is connected with the display module, the display module curls or expands around the curling shaft, the display device further comprises a transmission unit, the transmission unit is connected with the curling shaft, and in the process that the display module curls around the curling shaft, the transmission unit drives the curling shaft to longitudinally move towards one side far away from the display module; the transmission unit is arranged in the display device, the transmission unit is utilized to drive the curling shaft to longitudinally move towards one side far away from the display module, the stress of the curling junction of the display module is compensated through the longitudinal movement of the rolling shaft, the stress of the curling junction of the display module is reduced, and the technical problem that the stress of the curling junction of the existing display device is overlarge is solved.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display device and the stress compensation method provided by the embodiment of the present application are described in detail, and specific examples are applied to illustrate the principles and the implementation of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. A display device, comprising:
a housing;
a display module;
a curling unit including a curling shaft connected with the display module, the display module curling or unwinding around the curling shaft;
the display device further comprises a transmission unit, wherein the transmission unit is connected with the curling shaft, and the transmission unit drives the curling shaft to longitudinally move towards one side far away from the display module in the process of curling and accommodating the display module around the curling shaft.
2. The display device of claim 1, wherein the display module includes a curl section to be curled, a flat section not participating in curling, the curl section having a length L, the display module having a thickness z, an initial radius r of the curl shaft, a total time required for completing the curling being T, a time taken for the current curling being T, a distance of displacement of the curl shaft longitudinally toward a side away from the display module being y, wherein,
。
3. the display device according to claim 2, wherein the housing includes a supporting base plate and a horizontal limiting plate, the horizontal limiting plate is disposed above the supporting base plate, the display module is disposed on a side of the horizontal limiting plate away from the supporting base plate, and a side surface of the horizontal limiting plate facing the side of the curling shaft is disposed in abutment with the curling shaft.
4. A display device according to claim 3, wherein the edge of the side of the horizontal limiting plate away from the curl shaft is arranged beyond the edge corresponding to the display module, or the edge of the side of the horizontal limiting plate away from the curl shaft is arranged in alignment with the edge corresponding to the display module.
5. A display device as claimed in claim 3, characterized in that the thickness of the horizontal stop plate is greater than or equal to the distance y of displacement.
6. The display device of claim 3, wherein the display module includes a magnetic layer, the magnetic layer is made of a first magnetic material, the horizontal limiting plate is made of a second magnetic material, and the first magnetic material and the second magnetic material are opposite in polarity.
7. A display device according to claim 3, wherein the transmission unit comprises a motor, a connecting part and a traction part, the motor and the traction part are arranged on the supporting base plate, the traction part is connected with the curling shaft through the connecting part, and the motor drives the traction part to drive the curling shaft to longitudinally move towards one side far away from the display module.
8. The display device according to claim 7, wherein the connection member includes a connection rope and a pulley block, the connection rope is disposed around the pulley block, the traction member includes a slider, a slide is disposed on the support base plate, the slider is disposed on the slide and slides along the slide, one end of the connection rope is connected to the slider, and the other end of the connection rope is connected to the curling shaft.
9. The display device of claim 2, wherein the display module is curled four times about the curl axis when the curl section is fully curled, the stress at the curl interface of the curl section and the flat section being less than 20 mpa.
10. A terminal device, characterized in that it comprises a display device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310687397.5A CN116434669B (en) | 2023-06-12 | 2023-06-12 | Display device and terminal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310687397.5A CN116434669B (en) | 2023-06-12 | 2023-06-12 | Display device and terminal equipment |
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| Publication Number | Publication Date |
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| CN116434669A true CN116434669A (en) | 2023-07-14 |
| CN116434669B CN116434669B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310687397.5A Active CN116434669B (en) | 2023-06-12 | 2023-06-12 | Display device and terminal equipment |
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| CN113900483A (en) * | 2015-08-05 | 2022-01-07 | 三星电子株式会社 | Electronic device with flexible display device |
| CN110895901A (en) * | 2018-09-12 | 2020-03-20 | 乐金显示有限公司 | Display device |
| US20220264755A1 (en) * | 2019-07-26 | 2022-08-18 | Lg Electronics Inc. | Rollable display device |
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| Publication number | Publication date |
|---|---|
| CN116434669B (en) | 2023-10-03 |
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