CN111210725A - Display device and display method thereof - Google Patents
Display device and display method thereof Download PDFInfo
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- CN111210725A CN111210725A CN202010067453.1A CN202010067453A CN111210725A CN 111210725 A CN111210725 A CN 111210725A CN 202010067453 A CN202010067453 A CN 202010067453A CN 111210725 A CN111210725 A CN 111210725A
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- display panel
- flexible display
- display device
- housing
- reel
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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
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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
- G09F9/33—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
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- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention provides a display device and a display method thereof, relates to the technical field of display, and can simply and accurately detect the curling position of the display device in real time. A display device, comprising: a housing having an opening; a reel disposed in the housing and rotatably connected to the housing; a flexible display panel that can be wound on and unwound from a reel through an opening; the detection device is connected with the reel and used for detecting rotation parameters, and the rotation parameters are used for representing the rotation angle of the reel; the processing device is connected with the detection device and is used for converting the rotation parameters into the effective length of the flexible display panel; the effective length is the length of the portion of the flexible display panel outside the housing in a direction perpendicular to the direction in which the reels extend.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a display method thereof.
Background
At present, most of smart phones are in a 5-to 6-inch vertical plate shape, and are convenient to carry but with an undersized screen; the tablet personal computer is mostly in a vertical plate shape of about 10 inches, and the screen is moderate in size but inconvenient to carry.
The large-size display device can well meet the requirements of consumers, and the wound display device is small in size and convenient to carry; after stretching and unfolding, a larger display area can be obtained. However, how to simply and accurately position the curling position of the display device and obtain the resolution of the real-time unfolding portion becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention provides a display device and a display method thereof, which can simply and accurately detect the curling position of the display device in real time.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in one aspect, there is provided a display device including: a housing having an opening; a spool disposed within the housing and rotatably connected to the housing; a flexible display panel that is windable on and off the reel through the opening; the detection device is connected with the reel and used for detecting rotation parameters, and the rotation parameters are used for representing the rotation angle of the reel; the processing device is connected with the detection device and is used for converting the rotation parameters into the effective length of the flexible display panel; the effective length is the length of the part of the flexible display panel outside the shell along the direction perpendicular to the extending direction of the scroll.
Optionally, the display device further comprises: the processing device is further configured to calculate, according to the effective length of the flexible display panel, a current pixel value corresponding to a portion of the flexible display panel outside the housing; and the display control circuit is connected with the processing device and the flexible display panel and is used for driving the part of the flexible display panel outside the shell to display according to the current pixel value calculated by the processing device and enabling the part of the flexible display panel inside the shell to be a black screen.
Optionally, the display device further comprises: the two elastic components are respectively arranged at the two ends of the scroll, one end of each elastic component is connected with the scroll, and the other end of each elastic component is relatively fixedly arranged with the shell; the flexible display panel is unwound from the reel, so that the elastic member is elastically deformed.
Optionally, the display device further comprises a shaft core in the reel, and the shaft core is fixedly arranged opposite to the shell; set up respectively in two elastomeric element at spool both ends, elastomeric element is the torsional spring, the torsional spring cover is established on the axle core, the one end of torsional spring is connected the spool, and the other end is connected the axle core.
Optionally, the detection device is a torque sensor.
Optionally, the display device further comprises: the supporting assembly is connected with the shell and arranged on one side, far away from the light emitting surface, of the flexible display panel outside the shell; the support assembly is retracted in a first direction as the flexible display panel is wound on the reel; the support assembly extends in a second direction as the flexible display panel is unwound from the reel; the first direction and the second direction are opposite and are both perpendicular to the extending direction of the reel.
Optionally, the support assembly comprises a first support portion, a telescoping portion, and a second support portion;
the flexible portion connect first supporting part with the second supporting part, first supporting part still with the casing is connected.
Optionally, the telescopic part comprises a plurality of crossing units in an X shape connected in sequence; the joint of the first cross unit and the first supporting part and the joint of the last cross unit and the second supporting part can slide, and the sliding direction is parallel to the extending direction of the reel; the cross unit comprises a middle connecting shaft, two supporting arms and two end connecting shafts; wherein, two support arms are rotatably connected through the intermediate connecting shaft, and two cross units are rotatably connected through the end connecting shaft.
In another aspect, there is provided a display method of the display device, including: calculating to obtain a current pixel value corresponding to the part of the flexible display panel outside the shell according to the effective length of the flexible display panel in the display device; and the part of the flexible display panel outside the shell is displayed according to the current pixel value, and the part inside the shell is a black screen.
Optionally, before obtaining a current pixel value corresponding to a portion of a flexible display panel in the display device outside the housing according to an effective length of the display device, the method further includes: acquiring a current torque; and according to the current torque, looking up in a lookup table of the effective length of the display device and the torque to obtain the effective length corresponding to the current torque.
Optionally, calculating a current pixel value corresponding to a portion of a flexible display panel in the display device outside the housing according to an effective length of the display device, including: judging whether the state of the display device is a winding state or an unfolding state; when the display device is in a winding state, calculating the ratio of the total length to the effective length; the total length is the length perpendicular to the extending direction of the scroll when the flexible display panel is completely unfolded; dividing each row of pixels of the flexible display panel along the extending direction perpendicular to the scroll into a plurality of pixel groups according to the ratio; according to initial pixel values respectively corresponding to a plurality of pixels in each pixel group, weighting and calculating to obtain a current pixel value corresponding to the part of the flexible display panel outside the shell; and when the display device is in an unfolded state, taking an initial pixel value corresponding to each pixel in the part of the flexible display panel outside the shell as a current pixel value.
In another aspect, a computer device is provided, comprising a storage unit and a processing unit; the storage unit stores therein a computer program executable on the processing unit and stores the result; the processing unit realizes the display method of the display device as described above when executing the computer program.
In yet another aspect, a computer-readable medium is provided, which stores a computer program that, when executed by a processor, implements the display method of the display apparatus as described above.
The embodiment of the invention provides a display device and a display method thereof, wherein the display device comprises a shell with an opening; a reel disposed in the housing and rotatably connected to the housing; a flexible display panel that can be wound on and unwound from a reel through an opening; the detection device is connected with the scroll; and the processing device is connected with the detection device. The detection device detects the rotation parameters representing the rotation angle of the reel, and the processing device converts the rotation parameters into the effective length of the flexible display panel, so that the curling position of the display device can be simply and accurately positioned, and the effective length of the flexible display panel in the display device can be obtained in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2a is a schematic top view of FIG. 1;
FIG. 2b is a schematic cross-sectional view along AA' of FIG. 2 a;
FIG. 2c is a schematic cross-sectional view taken along direction BB' in FIG. 2 a;
fig. 3 is a schematic structural diagram of an lcd panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electroluminescent display panel according to an embodiment of the present invention;
FIG. 5a is another schematic cross-sectional view taken along direction BB' in FIG. 2 a;
FIG. 5b is a schematic cross-sectional view taken along direction BB' in FIG. 2 a;
fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 7a is a top view of FIG. 6;
FIG. 7b is a schematic cross-sectional view along AA' of FIG. 7 a;
fig. 8 is a flowchart illustrating a display method of a display device according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating a display method of another display device according to an embodiment of the invention;
fig. 10 is a flowchart illustrating a display method of another display device according to an embodiment of the present invention.
Reference numerals:
1-a display device; 10-a housing; 11-opening; 12-a reel; 13-an axial core; 20-a flexible display panel; 21-an array substrate; 22-pair of cassette substrates; 23-a liquid crystal layer; 24-an upper polarizer; 25-lower polarizer; 26-a substrate for display; 27-an encapsulation layer; 210-a first substrate; 211-thin film transistors; 212-pixel electrodes; 213-a common electrode; 214-a first insulating layer; 215-a second insulating layer; 220-a second substrate; 221-a color filter layer; 222-black matrix pattern; 260-a third substrate; 261-anode; 262-a light emitting functional layer; 263-cathode; 264-pixel definition layer; 265-a planar layer; 30-a detection device; 40-a processing device; 50-a display control circuit; 60-an elastic member; 70-a support assembly; 71-a first support; 72-a second support; 73-a telescoping section; 731-cross over unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a display device 1, as shown in fig. 1 to 2c, including: a housing 10 having an opening 11; a reel 12 disposed in the housing and rotatably connected to the housing; a flexible display panel 20, the flexible display panel 20 being capable of being wound on the reel 12 and unwound from the reel 12 through the opening 11.
The display device 1 provided by the embodiment of the present invention may be a product or a component having any display function, such as a display, a television, a digital camera, a mobile phone, a tablet computer, and an electronic photo frame.
The Display device 1 may be a Liquid Crystal Display (LCD) device, an electroluminescence Display device, or other types of Display devices. In the case that the display device is an electroluminescent display device, the electroluminescent display device may be an organic light-Emitting display device (OLED) or a Quantum Dot electroluminescent display device (QLED). Electroluminescent display devices are easier to fabricate as flexible display devices than liquid crystal display devices.
In the case where the display device 1 is a liquid crystal display device, the flexible display panel 20 is a liquid crystal display panel. As shown in fig. 3, the main structure of the liquid crystal display panel includes an array substrate 21, a pair of cell substrates 22, and a liquid crystal layer 23 disposed between the array substrate 21 and the pair of cell substrates 22. In this case, the backlight module included in the liquid crystal display device may be disposed at a lower position after the flexible display panel 20 is unfolded, so that the backlight module may provide backlight to the flexible display panel 20 after the flexible display panel 20 is unfolded.
Each sub-pixel of the array substrate 21 is provided with a thin film transistor 211 and a pixel electrode 212 on the first substrate 210. The thin film transistor 211 includes an active layer, a source electrode, a drain electrode, a gate electrode, and a gate insulating layer, the source electrode and the drain electrode are respectively in contact with the active layer, and the pixel electrode 212 is electrically connected to the drain electrode of the thin film transistor 211. In some embodiments, the array substrate 21 further includes a common electrode 213 disposed on the first substrate 210. The pixel electrode 212 and the common electrode 213 may be disposed at the same layer, in which case the pixel electrode 212 and the common electrode 213 are each a comb-tooth structure including a plurality of strip-shaped sub-electrodes. The pixel electrode 212 and the common electrode 213 may also be disposed at different layers, in which case, as shown in fig. 3, the first insulating layer 214 is disposed between the pixel electrode 212 and the common electrode 213. In the case where the common electrode 213 is provided between the thin film transistor 211 and the pixel electrode 212, as shown in fig. 3, a second insulating layer 215 is further provided between the common electrode 213 and the thin film transistor 211. In other embodiments, the counter cell substrate 22 includes a common electrode 213.
As shown in fig. 3, the opposing substrate 22 includes a Color filter layer 221 disposed on the second substrate 220, in which case the opposing substrate 22 may also be referred to as a Color Filter (CF). The color filter layer 221 at least includes a red photoresist unit, a green photoresist unit, and a blue photoresist unit, and the red photoresist unit, the green photoresist unit, and the blue photoresist unit are respectively aligned with the sub-pixels on the array substrate 21 one by one. The opposite-case base plate 22 further includes a black matrix pattern 222 disposed on the second substrate 220, the black matrix pattern 222 serving to space the red, green, and blue light blocking units.
As shown in fig. 3, the liquid crystal display panel further includes an upper polarizer 24 disposed on the side of the opposing-to-cell substrate 22 away from the liquid crystal layer 23 and a lower polarizer 25 disposed on the side of the array substrate 21 away from the liquid crystal layer 23.
In the case where the display device 1 is an electroluminescence display device, the flexible display panel 20 is an electroluminescence display panel. As shown in fig. 4, the electroluminescent display panel includes a display substrate 26 and an encapsulation layer 27 for encapsulating the display substrate 26. Here, the sealing layer 27 may be a sealing film or a sealing substrate.
As shown in fig. 4, each sub-pixel of the above-described display substrate 26 includes a light emitting device and a driving circuit provided over a third substrate 260, and the driving circuit includes a plurality of thin film transistors 211. The light emitting device includes an anode 261, a light emitting function layer 262, and a cathode 263, and the anode 261 is electrically connected to a drain of the thin film transistor 211, which is a driving transistor, among the plurality of thin film transistors 211. The display substrate 26 further includes a pixel defining layer 264, the pixel defining layer 264 including a plurality of opening regions, one light emitting device being disposed in one of the opening regions. In some embodiments, the light emitting functional layer 262 includes a light emitting layer. In other embodiments, the light emitting function layer 262 may further include one or more of an Electron Transport Layer (ETL), an Electron Injection Layer (EIL), a Hole Transport Layer (HTL), and a Hole Injection Layer (HIL), in addition to the light emitting layer.
As shown in fig. 4, the display substrate 26 further includes a planarization layer 265 disposed between the thin film transistor 211 and the anode electrode 261.
It is understood that the housing 10 is used to protect the flexible display panel 20, and the opening 11 facilitates the flexible display panel 20 to enter and exit the housing 10.
As an example, the shape of the housing 10 may be a rectangular parallelepiped, a cylinder, or the like, and the shape of the opening 11 may be a rectangle, or the like. The specific shapes of the housing 10 and the opening 11 may be set as required, but the present invention is not limited thereto.
For example, when the housing 10 and the opening 11 are both rectangular in shape, the extending direction of the reel 12 provided in the housing 10 and rotatably connected to the housing 10 is parallel to the long side of the rectangular parallelepiped, and the long side of the opening 11 is also parallel to the long side of the rectangular parallelepiped; when the housing 10 is shaped as a cylinder, the extension direction (indicated by k in fig. 2 a) of the reel 12 disposed in the housing 10 and rotatably connected to the housing 10 is parallel to the axis of the cylinder, and the long side of the opening 11 is also parallel to the axis of the cylinder. At this time, the housing 10 can protect the flexible display panel 20 and is small in size.
It can also be understood that the flexible display panel 20 is wound on the reel 12 in an initial state, and as the flexible display panel 20 is unwound from the reel 12, the flexible display panel 20 rotates the reel 12 in the direction a; in the case where the roll 12 rotates in the b direction, the roll 12 brings the flexible display panel 20 back to the original state.
Here, the initial state of the flexible display panel 20 means that the flexible display panel 20 is completely wound on the roll 12. The flexible display panel 20 is normally in an initial state when a product is sold.
The a direction and the b direction are opposite. For example, as shown in fig. 2b, in the case that the direction a is clockwise, the direction b is counterclockwise; when the direction a is counterclockwise, the direction b is clockwise.
As shown in fig. 2c, the display device 1 further includes: and the detection device 30 is connected with the reel 12 and used for detecting a rotation parameter, and the rotation parameter is used for representing the rotation angle of the reel 12.
It should be noted that the rotation angle refers to: the flexible display panel 20 is rotated by an angle of the reel 12 in the current state, compared to the initial state of the flexible display panel 20. That is, the angle by which the roll 12 is rotated when the flexible display panel 20 is changed from the initial state to the current state.
As shown in fig. 2c, the display device 1 further includes: and the processing device 40, wherein the processing device 40 is connected with the detection device 30 and is used for converting the rotation parameter into the effective length of the flexible display panel 20.
The effective length is the length of the portion of the flexible display panel 20 outside the housing 10 in a direction perpendicular to the extension direction of the roll 12. The detection device 30 and the processing device 40 are both disposed in the housing 10.
An embodiment of the present invention provides a display device 1, including a housing 10 having an opening 11; a reel 12 disposed in the housing 10 and rotatably connected to the housing 10; a flexible display panel 20, the flexible display panel 20 being wound on the reel 12 and unwound from the reel 12 through the opening 11; a detection device 30, wherein the detection device 30 is connected with the reel 12; and the processing device 40, wherein the processing device 40 is connected with the detection device 30. The detection device 30 detects the rotation parameter representing the rotation angle of the reel 12, and the processing device 40 converts the rotation parameter into the effective length of the flexible display panel 20, so that the curling position of the display device 1 can be simply and accurately positioned, and the effective length of the flexible display panel 20 in the display device 1 can be acquired in real time.
Optionally, as shown in fig. 2c, the display device 1 further includes:
the processing device 40 is further configured to calculate, according to the effective length of the flexible display panel 20, a current pixel value corresponding to a portion of the flexible display panel 20 outside the housing.
And the display control circuit 50 is connected with the processing device 40 and the flexible display panel 20, and is configured to drive the portion of the flexible display panel 20 outside the housing to display according to the current pixel value calculated by the processing device 40, and make the portion of the flexible display panel 20 inside the housing be a black screen.
In this case, on one hand, the display image can be adaptively displayed according to the portion of the flexible display panel 20 outside the housing 10, so as to improve the display effect; on the other hand, the power consumption of the flexible display panel 20 can be reduced, and the power can be saved, so that the power using time can be prolonged.
It should be noted that the display control circuit 50 includes gate lines and data lines, and the gate lines and the data lines are arranged to intersect vertically. Illustratively, the direction of the gate lines is perpendicular to the extending direction of the reel 12, and the direction of the data lines is parallel to the extending direction of the reel 12; alternatively, the gate lines are oriented parallel to the extending direction of the reels 12, and the data lines are oriented perpendicular to the extending direction of the reels 12.
When the gate lines are perpendicular to the extending direction of the winding shaft 12 and the data lines are parallel to the extending direction of the winding shaft 12, a part of the data lines are wound into the housing 10 along with the winding of the flexible display panel 20, and at this time, when the display control circuit 50 knows which data lines are wound, the data signals of the data lines are set as preset signals, for example, the preset signals are 0. Then, the display control circuit 50 outputs the preset signal to the data line of the flexible display panel 20 in the housing 10, so that the portion in the housing 10 is a black screen.
When the direction of the gate lines is parallel to the extending direction of the winding shaft 12 and the direction of the data lines is perpendicular to the extending direction of the winding shaft 12, along with the winding of the flexible display panel 20, a part of the gate lines are wound into the housing 10, at this time, when the display control circuit 50 knows which gate lines are wound, the gate line signals of the gate lines are set as preset signals, and the preset signals may be signals for closing the gate lines, such as low level signals or high level signals. Then, the display control circuit 50 outputs the preset signal to the gate lines of the flexible display panel 20 in the housing 10, so that the portion in the housing 10 is a black screen.
Optionally, as shown in fig. 5a, the display device 1 further includes:
two elastic members 60 respectively disposed at two ends of the winding shaft 12, wherein one end of each elastic member 60 is connected to the winding shaft 12, and the other end is fixed to the housing 10.
The flexible display panel 20 is unwound from the roll 12 such that the elastic member 60 is elastically deformed. At this time, if the winding shaft 12 rotates in the a direction, the winding shaft 12 rotates in the b direction along with the recovery of the elastic deformation of the elastic member 60, so as to bring the flexible display panel 20 back to the initial state. The a direction and the b direction are opposite.
Here, since the elastic members 60 are disposed at both ends of the winding shaft 12, and the structures of the elastic members 60 are the same, when the flexible display panel 20 is wound on the winding shaft 12, the forces on both sides are consistent, and the flexible display panel is prevented from being warped and tilted, that is, the flexible display panel 20 is prevented from being wound tightly on one side and tightly on the other side, and further the display effect is prevented from being affected. The manner in which the elastic member 60 is fixed to the housing 10 and the elastic member 60 are not limited to the present invention.
Optionally, as shown in fig. 5b, the display device 1 further includes:
in the reel 12, a shaft core 13 is provided, and the shaft core 13 is fixed to the housing 10.
Set up two elastomeric element 60 at spool 12 both ends respectively, elastomeric element 60 is the torsional spring, and the torsional spring cover is established on axle core 13, and spool 12 is connected to the one end of torsional spring, and axle core 13 is connected to the other end.
When the torsion spring is sleeved on the shaft core, the torsion spring has a certain deformation to generate a certain torsion, that is, when the flexible display panel 20 is in the initial state, the torsion spring already has the torsion, therefore, when the flexible display panel 20 drives the scroll 12 to rotate, that is, when the user unwinds the flexible display panel 20 from the scroll 12, the user overcomes the torsion of the torsion spring, the torsion spring further generates the deformation, on this basis, because the torsion spring generates the deformation, therefore, when the user loosens the hand, the flexible display panel 20 automatically retracts to the scroll 12, and restores to the initial state. Since the torsion spring has a torsion force in the initial state of the flexible display panel 20, it can help to wind the flexible display panel 20 on the reel 12.
Alternatively, the detection device 30 is a torque sensor.
It is understood that when the detecting device 30 is a torque sensor, the rotation parameter is torque accordingly.
Optionally, as shown in fig. 6-7 b, the display device 1 further includes a supporting member 70, and the supporting member 70 is connected to the housing 10 and disposed on a side of the flexible display panel 20 outside the housing, which is away from the light emitting surface.
As the flexible display panel 20 is wound on the roll 12, the support assembly 70 contracts in a first direction; as the flexible display panel 20 is unwound from the roll 12, the support assembly 70 extends in a second direction; the first and second directions are opposite and both perpendicular to the direction of extension of the spool 12.
The support member 70 functions to support and protect the flexible display panel 20. The connection point of the supporting component 70 and the housing 10 may be located at the opening 11, so that the flexible display panel 20 may be supported by penetrating through the opening 11, and the flatness of the flexible display panel 20 after being unfolded is ensured.
Illustratively, as shown in fig. 7b, as the flexible display panel 20 is wound on the roll 12, i.e., the roll 12 rotates in a counterclockwise direction, the support member 70 contracts in a c-direction; as the flexible display panel 20 is unwound from the roll 12, i.e., the roll 12 rotates in a clockwise direction, the support member 70 extends in a direction d, which is opposite to the direction d and perpendicular to the extending direction of the roll 12.
In addition, the length of the supporting member 70 may be longer than the effective length of the flexible display panel 20 outside the housing 10, and a handle may be formed in an unnecessary area to facilitate the user's operation.
Alternatively, as shown in fig. 6-7 b, the support assembly 70 includes a first support portion 71, a telescoping portion 73, and a second support portion 72.
The expansion portion 73 connects the first support portion 71 and the second support portion 72, and the first support portion 71 is also connected to the housing 10.
As an example, the first support portion 71 and the second support portion 72 may have an elongated structure, and an extending direction is parallel to an extending direction of the winding shaft 12, the first support portion 71 may be used to connect with the housing 10, and the second support portion 72 may be used to connect with one edge of the flexible display panel 20 (the edge is parallel to the extending direction of the winding shaft 12).
The embodiment of the present invention does not limit the specific connection manner, as long as the flexible display panel 20 can be connected and the force applied to the flexible display panel 20 is uniform when the flexible display panel is unfolded or wound.
Alternatively, as shown in fig. 6 to 7b, the telescopic part 73 includes a plurality of crossing units 731 in an X shape connected in sequence. The connection between the first cross unit 731 and the first support portion 71 and the connection between the last cross unit 731 and the second support portion 72 are both slidable, and the sliding direction is parallel to the extending direction of the winding shaft 12.
The cross unit 731 includes an intermediate connecting shaft, two supporting arms, and two end connecting shafts.
Wherein the two support arms are rotatably connected via an intermediate connecting shaft and the two cross units 731 are rotatably connected via an end connecting shaft.
It should be noted that the two supporting arms of the first cross unit 731 are respectively connected to the first supporting portion 71 to form two connecting positions; the two support arms of the last cross unit 731 are connected to the second support portion 72, respectively, to form two joints.
Based on this, as shown in fig. 7a and 7b, when the flexible display panel 20 is unfolded in the clockwise direction, the telescopic part 73 extends in the d direction, and at this time, two connection points of the first cross unit 731 and the first support part 71 and two connection points of the last cross unit 731 and the second support part 72 respectively slide relatively, that is, a relative distance between the two connection points of the first cross unit 731 and the first support part 71 gradually decreases, and a relative distance between the two connection points of the last cross unit 731 and the second support part 72 gradually decreases.
When the flexible display panel 20 is wound in the counterclockwise direction, the telescopic portion 73 is contracted in the c direction, and at this time, two joints of the first cross unit 731 and the first support portion 71 and two joints of the last cross unit 731 and the second support portion 72 slide away from each other, that is, a relative distance between the two joints of the first cross unit 731 and the first support portion 71 gradually increases, and a relative distance between the two joints of the last cross unit 731 and the second support portion 72 gradually increases.
An embodiment of the present invention further provides a display method of a display device, as shown in fig. 8, including:
s10, calculating a current pixel value corresponding to a portion of the flexible display panel 20 outside the housing according to the effective length of the flexible display panel 20 in the display device.
It is understood that when the flexible display panel 20 includes three primary color sub-pixels arranged in an array, the pixel values refer to red, green, and blue sub-pixel values.
S20, displaying the part of the flexible display panel 20 outside the housing according to the current pixel value, and displaying the part inside the housing 10 as a black screen.
The embodiment of the invention provides a display method of a display device, which is characterized in that a current pixel value corresponding to a part of a flexible display panel 20 outside a shell is obtained by calculation according to the effective length of the flexible display panel 20 in the display device, then the part of the flexible display panel 20 outside the shell is displayed according to the current pixel value, and the part of the flexible display panel 20 inside the shell is a black screen, so that an image can be adaptively displayed on the part of the flexible display panel 20 outside the shell and not displayed on the part inside the shell according to the real-time effective length, thereby improving the display effect, reducing the power consumption and saving the electric quantity.
Optionally, as shown in fig. 9, before S10, the method for displaying on a display device further includes:
and S1, acquiring the current torque. That is, the torque sensor detects that the corresponding torque is the current torque in the current state.
And S2, according to the current torque, looking up in a lookup table of the effective length and the torque of the display device to obtain the effective length corresponding to the current torque.
Wherein, the effective length of the display device in the lookup table has a one-to-one correspondence with the torque.
Before S1, the display method of the display device further includes: a look-up table of effective length and torque of the display device is obtained.
Exemplary, first step: and simulating the display device to obtain the one-to-one correspondence relationship between the effective length of the display device and the elasticity of the torsion spring.
The second step is that: and obtaining the one-to-one corresponding relation between the effective length and the torque of the display device according to the one-to-one corresponding relation between the effective length and the elasticity of the torsion spring and the one-to-one corresponding relation between the elasticity of the torsion spring and the torque.
The third step: and generating a lookup table about the effective length and the torque of the display device according to the one-to-one correspondence relationship between the effective length and the torque of the display device.
Alternatively, as shown in fig. 10, the S10 includes:
s110, judging whether the state of the display device is a winding state or an unfolding state.
For example, the number of winding turns of the flexible display panel may be measured by using a detection device, a difference between the number of previous turns and the current number of turns is determined, and if the difference is a positive value, the flexible display panel is in an unfolded state; if the value is negative, the winding state is established.
And S120, calculating the ratio of the total length to the effective length when the display device is in a winding state.
Wherein the total length is the length perpendicular to the extending direction of the roller 12 when the flexible display panel 20 is completely unfolded.
S121, dividing the flexible display panel 20 into a plurality of pixel groups along each row of pixels in the extending direction perpendicular to the reel 12 according to the ratio.
It should be noted that the number of pixel groups should be an integer, and when calculating the ratio, rounding should be performed.
And S122, according to the initial pixel values respectively corresponding to the plurality of pixels in each pixel group, performing weighting calculation to obtain a current pixel value corresponding to the part of the flexible display panel 20 outside the housing.
It should be noted that, the ratio is different, the number of pixel groups divided by each row of pixels is different, and the number of pixels included in the corresponding pixel group is different. So that the image can be displayed reduced by a corresponding factor in a direction perpendicular to the extension of the reel 12, according to different ratios.
For example, if the resolution of the flexible display panel 20 is 1000 × 2000, each row along the direction perpendicular to the extending direction of the reel 12 includes 2000 pixels, that is, the total length of the flexible display panel 20 is 2000 pixels, and assuming that the effective length is 500 pixels in the current state, the ratio is 4. At this time, 2000 pixels in each row are divided into 500 pixel groups by using 4 pixels as a group, and then an initial pixel value corresponding to the 4 pixels in each group is weighted to obtain a corresponding current pixel value.
For example, as shown in fig. 7a, with point O as the origin, the X direction is perpendicular to the extending direction of the spool 12, and the Y direction is parallel to the extending direction of the spool 12. At this time, the pixel values of the first row, the first column to the fourth column are (R)11,G11,B11)、(R12,G12,B12)、(R13,G13,B13)、(R14,G14,B14) Based thereon, the corresponding current pixel value is (R'11,G′11,B′11)。
Wherein R'11＝R11W1+R12W2+R13W3+R14W4；G′11＝G11W1+G12W2+G13W3+G14W4；B′11＝B11W1+B12W2+B13W3+B14W4。
It should be noted that, the weight involved in the weighting calculation process may be simulated by using a display device for multiple times, and then the corresponding relationship between the ratio of the total length to the effective length and the weight is obtained by fitting.
And S130, when the display device is in the unfolding state, taking an initial pixel value corresponding to each pixel in the part of the flexible display panel 20 outside the shell as a current pixel value.
The embodiment of the invention also provides computer equipment, which comprises a storage unit and a processing unit; the storage unit stores therein a computer program executable on the processing unit and stores the result; the processing unit realizes the display method of the display device as described above when executing the computer program.
Embodiments of the present invention also provide a computer-readable medium storing a computer program which, when executed by a processor, implements the display method of the display apparatus as described above.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (13)
1. A display device, comprising:
a housing having an opening;
a spool disposed within the housing and rotatably connected to the housing;
a flexible display panel that is windable on and off the reel through the opening;
the detection device is connected with the reel and used for detecting rotation parameters, and the rotation parameters are used for representing the rotation angle of the reel;
the processing device is connected with the detection device and is used for converting the rotation parameters into the effective length of the flexible display panel; the effective length is the length of the part of the flexible display panel outside the shell along the direction perpendicular to the extending direction of the scroll.
2. The display device according to claim 1, further comprising:
the processing device is further configured to calculate, according to the effective length of the flexible display panel, a current pixel value corresponding to a portion of the flexible display panel outside the housing;
and the display control circuit is connected with the processing device and the flexible display panel and is used for driving the part of the flexible display panel outside the shell to display according to the current pixel value calculated by the processing device and enabling the part of the flexible display panel inside the shell to be a black screen.
3. The display device according to claim 1, further comprising:
the two elastic components are respectively arranged at the two ends of the scroll, one end of each elastic component is connected with the scroll, and the other end of each elastic component is relatively fixedly arranged with the shell;
the flexible display panel is unwound from the reel, so that the elastic member is elastically deformed.
4. The display device according to claim 2, further comprising:
a spindle in the spool, the spindle being fixedly disposed relative to the housing;
set up respectively in two elastomeric element at spool both ends, elastomeric element is the torsional spring, the torsional spring cover is established on the axle core, the one end of torsional spring is connected the spool, and the other end is connected the axle core.
5. The display device according to claim 1, wherein the detection device is a torque sensor.
6. The display device according to claim 1, further comprising:
the supporting assembly is connected with the shell and arranged on one side, far away from the light emitting surface, of the flexible display panel outside the shell;
the support assembly is retracted in a first direction as the flexible display panel is wound on the reel; the support assembly extends in a second direction as the flexible display panel is unwound from the reel; the first direction and the second direction are opposite and are both perpendicular to the extending direction of the reel.
7. The display device of claim 6, wherein the support assembly comprises a first support, a telescoping portion, and a second support;
the flexible portion connect first supporting part with the second supporting part, first supporting part still with the casing is connected.
8. The display device according to claim 7, wherein the expansion part includes a plurality of crossing units in an X shape connected in sequence; the joint of the first cross unit and the first supporting part and the joint of the last cross unit and the second supporting part can slide, and the sliding direction is parallel to the extending direction of the reel;
the cross unit comprises a middle connecting shaft, two supporting arms and two end connecting shafts;
wherein, two support arms are rotatably connected through the intermediate connecting shaft, and two cross units are rotatably connected through the end connecting shaft.
9. A display method of a display device according to any one of claims 1 to 8, comprising:
calculating to obtain a current pixel value corresponding to the part of the flexible display panel outside the shell according to the effective length of the flexible display panel in the display device;
and the part of the flexible display panel outside the shell is displayed according to the current pixel value, and the part inside the shell is a black screen.
10. The method according to claim 9, further comprising, before obtaining a current pixel value corresponding to a portion of the flexible display panel outside the housing of the display device according to an effective length of the display device:
acquiring a current torque;
and according to the current torque, looking up in a lookup table of the effective length of the display device and the torque to obtain the effective length corresponding to the current torque.
11. The method according to claim 9, wherein calculating a current pixel value corresponding to a portion of a flexible display panel in the display device outside the housing according to an effective length of the display device comprises:
judging whether the state of the display device is a winding state or an unfolding state;
when the display device is in the winding state, calculating the ratio of the total length to the effective length; the total length is the length perpendicular to the extending direction of the scroll when the flexible display panel is completely unfolded;
dividing each row of pixels of the flexible display panel along the extending direction perpendicular to the scroll into a plurality of pixel groups according to the ratio;
according to initial pixel values respectively corresponding to a plurality of pixels in each pixel group, weighting and calculating to obtain a current pixel value corresponding to the part of the flexible display panel outside the shell;
and when the display device is in the unfolded state, taking an initial pixel value corresponding to each pixel in the part of the flexible display panel outside the shell as a current pixel value.
12. A computer device, comprising a storage unit and a processing unit; the storage unit stores therein a computer program executable on the processing unit and stores the result; the processing unit realizes a display method of the display apparatus according to any one of claims 9 to 11 when executing the computer program.
13. A computer-readable medium, in which a computer program is stored, which, when being executed by a processor, implements a display method of a display apparatus according to any one of claims 9 to 11.
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