CN111816069A - Display device and flattening control method thereof - Google Patents
Display device and flattening control method thereof Download PDFInfo
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- CN111816069A CN111816069A CN202010622552.1A CN202010622552A CN111816069A CN 111816069 A CN111816069 A CN 111816069A CN 202010622552 A CN202010622552 A CN 202010622552A CN 111816069 A CN111816069 A CN 111816069A
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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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0204—Mounting supporting structures on the outside of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a display device and a flattening control method of the display device. The display device includes: the display panel comprises a first non-bending area, a bending area and a second non-bending area which are arranged along a first direction; the folding assembly comprises a first middle frame, a second middle frame and a hinge piece, and the first non-bending area is fixed on the first middle frame; the second non-bending area is fixed on the second middle frame, and the first middle frame is connected with the second middle frame through the hinge piece; at least one strain sensing unit, wherein a partial region of the strain sensing unit is positioned in the non-bending region and a partial region is positioned in the bending region; the strain sensing unit comprises a resistor, and when the display panel is in a flattening state, whether a crease exists in the bending area can be detected through resistance value change of the resistor; and the driving assembly is connected with the first middle frame and/or the second middle frame, and when the folding area has a crease, the driving assembly can drive the first middle frame and/or the second middle frame to move along the first direction so as to flatten the crease, so that the aim of improving the crease of the display device is fulfilled.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a flattening control method of the display device.
Background
With the development of communication technology and social media, new challenges are provided for the functions of the mobile phone. At present, users pursue a large-size mobile phone screen, and aim to have better experience in entertainment activities such as games and videos, but carrying of the large-size mobile phone brings inconvenience to the users. At the moment, the folding screen comes along with the fortune, and the folding area can give consideration to the requirements of a large-size display screen and convenience in carrying of a user.
Among the prior art, display device can buckle along the axle of buckling, but display device resumes to flat state back from the state of buckling, because the influence of stress, the district of buckling may have the crease, and the existence of crease can lead to the fact the influence to display device's display effect, influences user's experience.
Disclosure of Invention
The invention provides a display device and a flattening control method of the display device, which aim to improve the crease of the display device.
In a first aspect, an embodiment of the present invention provides a display device, including:
the display panel comprises a first non-bending area, a bending area and a second non-bending area which are sequentially arranged along a first direction; a bending axis of the bending area is perpendicular to the first direction;
the folding assembly is positioned on one side of the display panel, which is far away from the light emitting side, and comprises a first middle frame, a second middle frame and a hinge piece, and the first non-bending area is fixed on the first middle frame; the second non-bending area is fixed on the second middle frame, and the first middle frame is connected with the second middle frame through the hinge piece;
at least one strain sensing unit, wherein a partial region of the strain sensing unit is located in the first non-bending region or the second non-bending region; a partial region of the strain sensing unit is located in the bending region; the strain sensing unit comprises a resistor, and is used for detecting whether a crease exists in the bending area or not through the resistance value change of the resistor when the display panel is in a flattening state;
the driving assembly is connected with the first middle frame and/or the second middle frame and used for driving the first middle frame and/or the second middle frame to move in the first direction to flatten the crease when the strain sensing unit detects that the crease exists in the bending area.
In a second aspect, an embodiment of the present invention provides a flattening control method for a display device, which is used for any one of the display devices provided in the first aspect. The control method comprises the following steps:
when the display panel is in a flattening state, the strain sensing unit detects whether a crease exists in the bending area;
if the display panel has a crease, a driving assembly drives the first middle frame and/or the second middle frame to move along the first direction so as to flatten the crease.
According to the technical scheme provided by the embodiment of the invention, the folding assembly is arranged on the side of the display panel, which deviates from the light emitting side, and comprises the first middle frame, the second middle frame and the hinge piece, the first non-bending area of the display panel is fixed on the first middle frame, the second non-bending area of the display panel is fixed on the second middle frame, the hinge piece connects the first middle frame with the second middle frame, and the display device can be folded along the bending axis of the bending area; by arranging the strain sensing unit, a part of area of the strain sensing unit is positioned in the first non-bending area or the second non-bending area, a part of area of the strain sensing unit is positioned in the bending area, and the strain sensing unit comprises a resistor and can detect whether a crease exists in the bending area or not according to the resistance value change of the resistor when the display panel is in a flattening state; by arranging the driving assembly connected with the first middle frame and/or the second middle frame, when the folding line exists in the folding area, the first middle frame and/or the second middle frame can be driven to move along the first direction to flatten the folding line, so that the folding line of the display device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, a brief description is given below of the drawings used in describing the embodiments. It should be clear that the described figures are only views of some of the embodiments of the invention to be described, not all, and that for a person skilled in the art, other figures can be derived from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the display device shown in FIG. 1 along the section line AA';
fig. 3 is a schematic partial structure diagram of a display device according to an embodiment of the present invention;
fig. 4 is a schematic partial structure diagram of another display device according to an embodiment of the present invention;
fig. 5 is a schematic partial structure diagram of another display device according to an embodiment of the present invention;
fig. 6 is a schematic partial structure diagram of another display device according to an embodiment of the present invention;
FIG. 7 is a schematic partial structure diagram of another display device according to an embodiment of the present invention
FIG. 8 is a schematic cross-sectional view of the display device shown in FIG. 7 along the section line BB';
fig. 9 is a flowchart illustrating a method for controlling flattening of a display device according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the invention, and fig. 2 is a schematic sectional structural diagram of the display device shown in fig. 1 along a section line AA'. As shown in fig. 1 and 2, the display device 100 includes:
the display device includes a display panel 110 including a first non-bending region 111, a bending region 113, and a second non-bending region 112 sequentially arranged along a first direction; the bending axis S of the bending region 113 is perpendicular to the first direction.
The folding assembly 120 is located on one side of the display panel 110 away from the light emitting side, and includes a first middle frame 121, a second middle frame 122 and a hinge 123, and the first non-bending region 111 is fixed on the first middle frame 121; the second non-bending region 112 is fixed on the second middle frame 122, and the hinge 123 connects the first middle frame 111 with the second middle frame 122.
At least one strain sensing unit 130, wherein a partial region of the strain sensing unit 130 is located in the second non-bending region 112; a partial region of the strain sensing unit 120 is located in the bending region 113; the strain sensing unit 130 includes a resistor, and is used for detecting whether a crease exists in the bending region 113 through a resistance change of the resistor when the display panel 110 is in the flat state.
The driving assembly 140 is connected to the first middle frame 121 or the second middle frame 122, and configured to drive the first middle frame 121 or the second middle frame 122 to move along the first direction to flatten the fold when the strain sensing unit 130 detects that the fold region 113 has the fold.
Specifically, as shown in fig. 1, the first non-bending region 111, the bending region 113, and the second non-bending region 112 are sequentially arranged along a first direction (indicated by arrows in the figure), the first middle frame 121, the second middle frame 122, and the hinge 123 are also sequentially arranged along the first direction, and the first non-bending region 111 is fixed on the first middle frame 111, and the second non-bending region 112 is fixed on the second middle frame 122. Since the first middle frame 121 is connected to the second middle frame 122 through the hinge 123, the folding assembly 120 can be bent at the hinge 123, so as to drive the display panel 110 to be folded along the bending axis S of the bending region 113.
For example, a partial region of the strain sensing unit 130 is located in the second non-bending region 112, and a partial region is located in the bending region 113, as shown in fig. 1. The strain sensing unit 130 includes a resistor, and when the display panel 110 is in the flat state, if the bending region 113 has a crease, the resistor in the strain sensing unit 130 is deformed such as stretching and bending, so that the resistance of the resistor changes. That is, when the resistance of the strain sensing unit 130 at the bending region 113 changes, the bending region 113 is considered to have a crease, and when the resistance of the strain sensing unit 130 does not change, the bending region 113 is considered to have no crease. Therefore, when the display panel 110 is in the flat state, the strain sensing unit 130 can detect whether a crease exists in the bending region 113 according to the resistance value change of the resistor. In other embodiments, a partial region of the strain sensing unit 130 may be located in the first non-bending region 111, and a partial region may be located in the bending region 113.
For example, as shown in fig. 1, the driving assembly 140 is connected to the first middle frame 121, and when the strain sensing unit 130 detects that there is a crease in the bending region 113, the driving assembly 140 can drive the first middle frame 121 to move along the first direction and away from the bending region 113, so as to flatten the crease in the bending region 113. In other embodiments, it may also be that the driving assembly 140 is connected to the second middle frame 122, and when the strain sensing unit 130 detects that there is a crease in the bending region 113, the driving assembly 140 can drive the second middle frame 122 to move toward and away from the bending region 113 along the first direction to flatten the crease in the bending region 113; as shown in fig. 8, when the strain sensing unit 130 detects that there is a crease in the bending region 113, the driving assembly 140 can drive the first middle frame 121 and the second middle frame 122 to move along the first direction and away from the bending region 113, so as to flatten the crease in the bending region 113. The embodiment of the present invention is not particularly limited thereto.
In summary, in the embodiment of the invention, the folding element 120 is disposed on the light-exiting side of the display panel 110, the folding element 120 includes the first middle frame 121, the second middle frame 122 and the hinge 123, and the first non-bending region 111 of the display panel 110 is fixed on the first middle frame 121, the second non-bending region 112 of the display panel 110 is fixed on the second middle frame 122, the hinge 123 connects the first middle frame 121 with the second middle frame 122, and the display device 100 can be folded along the bending axis S of the bending region 113; by arranging the strain sensing unit 130, a partial region of the strain sensing unit 130 is located in the first non-bending region 111 or the second non-bending region 112, a partial region of the strain sensing unit 130 is located in the bending region 113, and the strain sensing unit 130 includes a resistor, and can detect whether a crease exists in the bending region 113 according to a resistance change of the resistor when the display panel 110 is in a flattened state; by providing the driving assembly 140 connected to the first middle frame 121 and/or the second middle frame 122, when there is a crease in the bending region 113, the first middle frame 121 and/or the second middle frame 122 can be driven to move in the first direction to flatten the crease, thereby improving the crease of the display device.
Fig. 3 is a partial structural schematic view of a display device according to an embodiment of the invention, and as shown in fig. 3, the strain sensing unit 130 is disposed in the same layer as the driving circuit layer 114 of the display panel 110.
Specifically, as shown in fig. 3, the display panel 110 includes a substrate 115, a driving circuit layer 114 on a side of the substrate 115, and a light emitting array layer 116 on a side of the driving circuit layer 114 opposite to the substrate 115. The thin film transistor in the driving circuit layer 114 includes a gate 114-1, a source/drain 114-2 and an active layer 114-3, the light emitting array layer 116 is electrically connected to the source/drain 114-2, a driving signal output by the driving circuit layer 114 is transmitted to the light emitting array layer 116 through the source/drain 114-2, and the light emitting array layer 116 is excited by the driving signal.
In the embodiment of the invention, the strain sensing unit 130 and the driving circuit layer 114 of the display panel 110 are arranged on the same layer, and a mask plate does not need to be separately manufactured for the strain sensing unit 130, so that the cost is saved, the manufacturing procedures are reduced, and the production efficiency is improved. Optionally, as shown in fig. 3, the strain sensing unit 130 is disposed on the same layer as the active layer 114-3 of the thin film transistor in the driving circuit layer 114, and the active layer 114-3 is made of silicon, which is beneficial to improving the detection sensitivity of the strain sensing unit 130. In other embodiments, the strain sensing unit 130 may be disposed on the same layer as any one of the gate, the source, and the drain, which is not limited in the embodiments of the present invention.
Optionally, with continued reference to fig. 1, the strain sensing unit 130 is located in the non-display region 101 of the display panel 110.
Specifically, as shown in fig. 1, the display panel 110 includes a display area 102 and a non-display area 101, the non-display area 101 is disposed around the display area 102, and the strain sensing unit 130 is disposed in the non-display area 101 of the display panel 110, so that the aperture ratio of the display panel 110 is not affected, the requirement on the precision of the process is low, and the process is easier to implement.
Optionally, fig. 4 is a partial schematic structural diagram of another display device according to an embodiment of the present invention, and as shown in fig. 4, the strain sensing unit includes a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4.
A first end of the first resistor R1 and a first end of the fourth resistor R4 are electrically connected to form a first power input end D1; the second end of the first resistor R1 and the first end of the second resistor R2 are electrically connected to form a first sensing signal measuring terminal S1; a second end of the second resistor R2 and a first end of the third resistor R3 are electrically connected to form a second power input end D2; the second end of the third resistor R3 and the second end of the fourth resistor R4 are electrically connected to form a second sensing signal measuring terminal S2.
Specifically, as shown in fig. 4, the strain sensing unit includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, and the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are electrically connected to form a wheatstone bridge structure. When no stress exists, the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 do not deform, the Wheatstone bridge is in a balanced state, and the stress sensing signal value output by the strain sensing unit is zero; when stress is present, at least one of the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 deforms, the resistance value of the corresponding deformed resistor changes, and the wheatstone bridge balance is disrupted and a non-zero stress sensing signal value is generated. Therefore, when the display panel is in a flat state, if there is no crease in the bending region, the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 have no deformation, the wheatstone bridge is in a balanced state, and the value of the stress sensing signal output by the strain sensing unit 130 is zero; if a crease exists in the bending region, at least one of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 is deformed, the resistance value of the corresponding deformed resistor is changed, and the balance of the Wheatstone bridge is broken and a non-zero stress sensing signal value is generated. Therefore, the strain sensing unit can determine whether a crease exists in the bending area according to the change of the resistance.
Optionally, with continued reference to fig. 4, the extending directions of the first resistor R1, the third resistor R3, the second resistor R2, and the fourth resistor R4 are parallel to the first direction.
Specifically, as shown in fig. 4, the extending directions of the first resistor R1, the third resistor R3, the second resistor R2, and the fourth resistor R4 are parallel to the first direction, so that the sizes of the first resistor R1, the third resistor R3, the second resistor R2, and the fourth resistor R4 in the bending axis direction, that is, the size of the strain sensing unit in the bending axis direction can be reduced, and the strain sensing unit 130 is disposed in the non-display area, so that the width of the non-display area can be reduced, and the narrow-frame design of the display device 100 is facilitated. In addition, when there is a crease in the bending region 113, the long sides of the first resistor R1, the third resistor R3, the second resistor R2, and the fourth resistor R4 are parallel to the first direction, and the moment arm of the bending stress of the crease acting on the strain sensing unit 130 is longer, so that the moment of the bending stress applied to the strain sensing unit 130 is larger, that is, the deformation amount of the resistor in the strain sensing unit 130 is larger, and the crease is more easily detected.
Optionally, fig. 5 is a schematic partial structure diagram of another display device according to an embodiment of the present invention, and as shown in fig. 5, the first resistor R1 and the third resistor R3 are located in the bending region 113; the second resistor R2 and the fourth resistor R4 are located in the second non-kink region 112.
Specifically, the second resistor R2 and the fourth resistor R4 are located in the second non-bending region 112, when the display device is in the flat state, the second non-bending region 112 does not generate a crease, and the second resistor R2 and the fourth resistor R4 do not deform no matter whether the bending region 113 has a crease or not, that is, the resistance values of the second resistor R2 and the fourth resistor R4 are fixed; the first resistor R1 and the third resistor R3 are located in the bending region 113, when a crease exists in the bending region 113, the first resistor R1 and the third resistor R3 deform, the resistance values of the corresponding first resistor R1 and the third resistor R3 change, the balance of the Wheatstone bridge is damaged, and the difference value of the signals detected by the first sensing signal measuring end S1 and the second sensing signal measuring end S2 is no longer zero, that is, a non-zero stress sensing signal value is generated. In the embodiment of the invention, because the resistance values of the second resistor R2 and the fourth resistor R4 are fixed, the non-zero stress sensing signal can be detected by the small deformation of the first resistor R1 and the third resistor R3, and therefore, the small crease strain can be detected. In other embodiments, it is also possible that the first resistor R1 and the third resistor R3 are located at the kink region 113; the second resistor R2 and the fourth resistor R4 are located in the first non-kink region.
Optionally, with continued reference to fig. 5, the strain sensing unit 130 includes a first region 131, a transition region 133 and a second region 132, the first region 131 is located in the inflection region 113, the second region 132 is located in the second non-inflection region 112, the transition region 133 is located between the first region and the second region 112, the first resistor R1 and the third resistor R3 are located in the first region 131, and the second resistor R2 and the fourth resistor R4 are located in the second region 132.
Specifically, the transition region 133 is located between the first region 111 and the second region 112, the first region is provided with the first resistor R1 and the third resistor R3, the second region is provided with the second resistor R2 and the fourth resistor R4, meanwhile, the first resistor R1 and the third resistor R3 are located in the bending region 113, and the second resistor R2 and the fourth resistor R4 are located in the second non-bending region 112, so that the transition region 133 may be located in the second non-bending region 112 and the bending region 113, as shown in fig. 5; or the transition region 133 is located at the first non-inflection region 111 or the inflection region 113. In the process of attaching the display panel to the folding assembly, due to the influence of processes and equipment, a certain attachment deviation exists, the attachment deviation is compensated by setting the transition region 133, it is ensured that after attachment, the second resistor R2 and the fourth resistor R4 are located in the second non-bending region 112, the first resistor R1 and the third resistor R3 are located in the bending region 113, and dislocation of resistors in the strain sensing unit 130 caused by the attachment deviation is prevented, for example, the attachment deviation causes the first resistor R1 and the third resistor R3 to include portions located in the second non-bending region 112, or the attachment deviation causes the second resistor R2 and the fourth resistor R4 to include portions located in the bending region 113, so that the accuracy of crease detection is improved. Further, the length of the transition region 133 along the first direction is not suitable to be set too large, if there may be other electronic elements or electrical signals between the third resistor R3 and the second resistor R2, the balance of the wheatstone bridge may be damaged by the other electronic elements or the electrical signals, so as to affect the detection accuracy of the strain sensing unit 130, and the length of the transition region 133 along the first direction may compensate the joint deviation, so that the length of the transition region 133 along the first direction is at least three orders of magnitude smaller than the length of the first non-bending region 111 or the second non-bending region 112 along the first direction. In other embodiments, it is also possible that the first region 131 is located in the bending region 113, the second region 132 is located in the first non-bending region, the transition region 133 is located between the first region and the second region 112, the first resistor R1 and the third resistor R3 are located in the first region 131, and the second resistor R2 and the fourth resistor R4 are located in the second region 132.
Optionally, with continued reference to FIG. 5, the length of the transition region 133 along the first direction ranges from 100um to 240 um.
Specifically, in the process of attaching the display panel to the folding assembly, due to the influence of the process and the equipment, the attachment deviation is generally 50um to 120 um. For example, the left edge of the display panel extends out of the left edge of the folding assembly 120 along the first direction, and the extended length is 50um-120 um; or the right side edge of the display panel extends out of the right side edge of the folding assembly along the first direction and the extending length is 50um-120 um. The length range of the transition region 133 along the first direction is set to 100um to 240um, so that the bonding deviation can be compensated, and the dislocation of the resistance in the strain sensing unit 130 caused by the bonding deviation can be prevented. In the embodiment of the present invention, the range of the fitting deviation is only illustrated by way of example, and is not particularly limited thereto.
Optionally, fig. 6 is a partial schematic structural diagram of another display device according to an embodiment of the present invention, and as shown in fig. 6, the display device 100 further includes a heat conductive layer 150.
The perpendicular projection of the strain sensing unit 130 to the plane of the heat conductive layer 150 is located within the heat conductive layer 150.
Specifically, as shown in fig. 5 and 6, a certain distance exists between the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 of the strain sensing unit 130, especially, the distance between the second resistor R2 and the third resistor R3 is longer, the temperature of the first resistor R1, the temperature of the second resistor R2, the temperature of the third resistor R3 and the temperature of the fourth resistor R4 are different, and the corresponding resistances of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are different, so that crease detection is affected. By arranging the heat conduction layer 150, the heat conduction layer 150 covers the strain sensing unit 130, the temperature difference of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 can be reduced, the resistance difference of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 is further reduced, and the smooth completion of crease detection is ensured.
Optionally, with continued reference to fig. 6, the heat conductive layer 150 is disposed in the same layer as any one of the metal layers of the driving circuit layer 114 of the display panel.
Specifically, the heat conduction layer 150 and any metal layer of the driving circuit layer 114 of the display panel are disposed in the same layer, for example, the heat conduction layer 150 and the source/drain electrode 114-2 are disposed in the same layer, as shown in fig. 6; the thermally conductive layer 150 may also be disposed in the same layer as the gate electrode 114-1 or the active layer 114-3 of the thin film transistor of the driving circuit layer 114. By arranging the heat conduction layer 150 and the driving circuit layer 114 of the display panel on the same layer, a mask plate does not need to be manufactured for the heat conduction layer 150, the cost is saved, the manufacturing procedure is reduced, and the production efficiency is improved. In other embodiments, the heat conduction layer 150 may also be disposed on the same layer as any transparent electrode layer of the display panel, and a mask plate is not required to be separately manufactured for the heat conduction layer 150, so that the cost is saved, the process steps are reduced, and the production efficiency is improved. Further, the heat conductive layer 150 is connected to a potential signal, and can shield the signal.
Optionally, fig. 7 is a schematic structural diagram of another display device according to an embodiment of the present invention, and as shown in fig. 7, the display device 100 includes a plurality of strain sensing units 130; the strain sensing units 130 are arranged in a direction parallel to the bending axis S.
Illustratively, as shown in fig. 7, the display device 100 includes a strain sensing unit 1301 and a strain sensing unit 1302; the strain sensing unit 1301 and the strain sensing unit 1302 are located at two sides of the display device 100, the strain sensing unit 1301 can detect a fold on a first side of the display device 100, and the strain sensing unit 1302 can detect a fold on a second side of the display device 100. When the strain sensing unit 1301 or the strain sensing unit 1302 detects that a crease exists in the bending region 113, the driving component drives the display panel to move to flatten the crease, so that whether each region of the bending region 113 has a crease can be detected, and the detection rate of the crease can be improved. In other embodiments, the display device 100 may further include three or more strain sensing units 130, which is not limited in this embodiment of the present invention.
It should be noted that when the plurality of sensing units 130 detect that there is a crease in the bending area 113, other ways may also be used to control to flatten the crease, and the invention is not limited to the above-mentioned ways provided by the embodiments of the invention.
Alternatively, fig. 8 is a schematic cross-sectional structure view of the display device provided in fig. 7 along a section line BB', and as shown in fig. 8, the driving assembly 140 includes a first driving unit 141 and a second driving unit 142; the first driving unit 141 is connected with the first middle frame 121; the second driving unit 142 is connected with the second middle frame 122; if the strain sensing unit 130 detects that there is a crease in the bending region 113, the first driving unit 141 drives the first middle frame 121 to move along a direction parallel to the first direction and away from the hinge 123; the second driving unit 142 drives the second middle frame 122 to move in a direction parallel to the first direction and away from the hinge 123 to flatten the crease.
Specifically, as shown in fig. 8, the driving assembly 140 includes a first driving unit 141 and a second driving unit 142, the first driving unit 141 is connected to the first middle frame 121, the second driving unit 142 is connected to the second middle frame 122, when the strain sensing unit 130 detects that the bending region 113 has a fold, the first driving unit 141 can drive the first middle frame 121 to move along the first direction and in a direction away from the bending region 113, and the second driving unit 142 can drive the second middle frame 122 to move along the first direction and in a direction away from the bending region 113, so as to flatten the fold of the bending region 113. The first driving unit 141 and the second driving unit 142 provide driving force at the same time, so that the time required for flattening the crease can be shortened, the flattening speed is increased, and the user experience is improved.
In specific implementation, the display device 200 provided in the embodiment of the present invention may be a mobile phone, a tablet computer, a notebook computer, or any product or component with a foldable display panel, such as a television, a display area, a digital photo frame, a navigator, an intelligent wearable display device, and the like, which is not limited in this embodiment of the present invention.
Based on the same inventive concept, the embodiment of the invention further provides a flattening control method of the display device, which is used for any display device provided in the embodiment of the invention.
Fig. 9 is a flowchart illustrating a method for controlling flattening of a display device according to an embodiment of the present invention. As shown in fig. 9, the flattening control method of the display device includes the following specific steps:
s110, when the display panel is in a flattening state, the strain sensing unit detects whether a crease exists in the bending area.
S120, if the display panel has a crease, a driving assembly drives the first middle frame and/or the second middle frame to move along the first direction so as to flatten the crease.
According to the embodiment of the invention, through the strain sensing unit 130, when the display panel 110 is in the flattening state, whether a crease exists in the bending area can be detected according to the resistance value change of the resistor; when the folding area has a folding line, the first middle frame and/or the second middle frame can be driven by the driving component to move along the first direction so as to flatten the folding line, and therefore the folding line of the display device is improved.
The foregoing is considered as illustrative of the preferred embodiments of the invention and technical principles employed. The present invention is not limited to the specific embodiments herein, and it will be apparent to those skilled in the art that various changes, rearrangements, and substitutions can be made without departing from the scope of the invention. Therefore, although the present invention has been described in more detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the claims.
Claims (13)
1. A display device, comprising:
the display panel comprises a first non-bending area, a bending area and a second non-bending area which are sequentially arranged along a first direction; a bending axis of the bending area is perpendicular to the first direction;
the folding assembly is positioned on one side of the display panel, which is far away from the light emitting side, and comprises a first middle frame, a second middle frame and a hinge piece, and the first non-bending area is fixed on the first middle frame; the second non-bending area is fixed on the second middle frame, and the first middle frame is connected with the second middle frame through the hinge piece;
at least one strain sensing unit, wherein a partial region of the strain sensing unit is located in the first non-bending region or the second non-bending region; a partial region of the strain sensing unit is located in the bending region; the strain sensing unit comprises a resistor, and is used for detecting whether a crease exists in the bending area or not through the resistance value change of the resistor when the display panel is in a flattening state;
the driving assembly is connected with the first middle frame and/or the second middle frame and used for driving the first middle frame and/or the second middle frame to move in the first direction to flatten the crease when the strain sensing unit detects that the crease exists in the bending area.
2. The display device according to claim 1, wherein the strain sensing unit is disposed in the same layer as a driving circuit layer of the display panel.
3. The display device according to claim 1, wherein the strain sensing unit is located in a non-display region of the display panel.
4. The display device according to claim 1, wherein the strain sensing unit includes a first resistance, a second resistance, a third resistance, and a fourth resistance;
a first end of the first resistor and a first end of the fourth resistor are electrically connected to form a first power input end; a second end of the first resistor and a first end of the second resistor are electrically connected to form a first induction signal measuring end; a second end of the second resistor and a first end of the third resistor are electrically connected to form a second power input end; and the second end of the third resistor and the second end of the fourth resistor are electrically connected to form a second sensing signal measuring end.
5. The display device according to claim 4, wherein a direction in which the first resistor, the third resistor, the second resistor, and the fourth resistor extend is parallel to the first direction.
6. The display device according to claim 4, wherein the first resistor and the third resistor are located in the bending region; the second resistor and the fourth resistor are located in the first non-bending area or the second non-bending area.
7. The display device according to claim 6, wherein the strain sensing unit comprises a first region, a transition region and a second region, the first region is located in the bending region, the second region is located in the first non-bending region or the second non-bending region, the transition region is located between the first region and the second region, the first resistor and the third resistor are located in the first region, and the second resistor and the fourth resistor are located in the second region.
8. The display device according to claim 7, wherein the length of the transition region along the first direction is in a range of 100um to 240 um.
9. The display device according to claim 1, further comprising a heat conductive layer;
the vertical projection of the strain sensing unit on the plane of the heat conduction layer is positioned in the heat conduction layer.
10. The display device according to claim 9, wherein the heat conduction layer is disposed in the same layer as any one metal layer of the driving circuit layer of the display panel, in the same layer as an active layer of the thin film transistor of the driving circuit layer of the display panel, or in the same layer as any one transparent electrode layer of the display panel.
11. The display device according to claim 1, comprising a plurality of strain sensing units;
the strain sensing units are arranged in a direction parallel to the bending axis.
12. The display device according to claim 1, wherein the driving assembly includes a first driving unit and a second driving unit; the first driving unit is connected with the first middle frame; the second driving unit is connected with the second middle frame; if the strain sensing unit detects that the bending area has a crease, the first driving unit drives the first middle frame to move along a direction parallel to the first direction and away from the hinge; the second driving unit drives the second middle frame to move in the direction parallel to the first direction and away from the hinge piece so as to flatten the crease.
13. A flattening control method for a display device, characterized by being used for the display device according to any one of claims 1 to 12; the control method comprises the following steps:
when the display panel is in a flattening state, the strain sensing unit detects whether a crease exists in the bending area;
if the display panel has a crease, a driving assembly drives the first middle frame and/or the second middle frame to move along the first direction so as to flatten the crease.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113936560A (en) * | 2021-11-05 | 2022-01-14 | 合肥维信诺科技有限公司 | Flexible folding display device |
| CN115050261A (en) * | 2022-05-31 | 2022-09-13 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN115240561A (en) * | 2022-08-25 | 2022-10-25 | 昆山国显光电有限公司 | Display panel, display panel control method and display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170060189A1 (en) * | 2015-08-26 | 2017-03-02 | Lg Display Co., Ltd. | Flexible display device having bending sensing device |
| KR20170025620A (en) * | 2015-08-31 | 2017-03-08 | 엘지디스플레이 주식회사 | Flexible display device having the bending sensing device and method for bending sensing the same |
| CN107422514A (en) * | 2017-08-22 | 2017-12-01 | 武汉天马微电子有限公司 | Array base palte, display panel and display device |
| CN109036142A (en) * | 2018-08-30 | 2018-12-18 | 京东方科技集团股份有限公司 | The control method of Folding display device and Folding display device |
| CN109427816A (en) * | 2017-08-29 | 2019-03-05 | 京东方科技集团股份有限公司 | Flexible display panels, flexible display apparatus and its display control method |
| CN109491506A (en) * | 2018-11-13 | 2019-03-19 | 云谷（固安）科技有限公司 | A kind of display terminal and display control method |
| CN110109513A (en) * | 2019-04-22 | 2019-08-09 | 武汉华星光电半导体显示技术有限公司 | Foldable display screen |
| CN111090361A (en) * | 2019-12-27 | 2020-05-01 | Oppo广东移动通信有限公司 | Folding screen assembly and electronic device |
-
2020
- 2020-06-30 CN CN202010622552.1A patent/CN111816069B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170060189A1 (en) * | 2015-08-26 | 2017-03-02 | Lg Display Co., Ltd. | Flexible display device having bending sensing device |
| KR20170025620A (en) * | 2015-08-31 | 2017-03-08 | 엘지디스플레이 주식회사 | Flexible display device having the bending sensing device and method for bending sensing the same |
| CN107422514A (en) * | 2017-08-22 | 2017-12-01 | 武汉天马微电子有限公司 | Array base palte, display panel and display device |
| CN109427816A (en) * | 2017-08-29 | 2019-03-05 | 京东方科技集团股份有限公司 | Flexible display panels, flexible display apparatus and its display control method |
| CN109036142A (en) * | 2018-08-30 | 2018-12-18 | 京东方科技集团股份有限公司 | The control method of Folding display device and Folding display device |
| CN109491506A (en) * | 2018-11-13 | 2019-03-19 | 云谷（固安）科技有限公司 | A kind of display terminal and display control method |
| CN110109513A (en) * | 2019-04-22 | 2019-08-09 | 武汉华星光电半导体显示技术有限公司 | Foldable display screen |
| CN111090361A (en) * | 2019-12-27 | 2020-05-01 | Oppo广东移动通信有限公司 | Folding screen assembly and electronic device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113936560A (en) * | 2021-11-05 | 2022-01-14 | 合肥维信诺科技有限公司 | Flexible folding display device |
| CN113936560B (en) * | 2021-11-05 | 2023-11-07 | 合肥维信诺科技有限公司 | Flexible folding display device |
| CN115050261A (en) * | 2022-05-31 | 2022-09-13 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN115050261B (en) * | 2022-05-31 | 2024-03-19 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN115240561A (en) * | 2022-08-25 | 2022-10-25 | 昆山国显光电有限公司 | Display panel, display panel control method and display device |
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| Publication number | Publication date |
|---|---|
| CN111816069B (en) | 2022-07-12 |
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