CN108831316B

CN108831316B - Stretching display screen and control method thereof

Info

Publication number: CN108831316B
Application number: CN201810608417.4A
Authority: CN
Inventors: 万康; 于锋; 李阳; 刘晓佳
Original assignee: Yungu Guan Technology Co Ltd
Current assignee: Yungu Guan Technology Co Ltd
Priority date: 2018-06-13
Filing date: 2018-06-13
Publication date: 2021-05-14
Anticipated expiration: 2038-06-13
Also published as: CN108831316A

Abstract

The invention provides a stretching display screen and a control method thereof, wherein the stretching display screen comprises the following components: the stretching display screen comprises a display area, wherein the display area comprises a plurality of sub-display areas, at least one stretching area and at least one pixel compensation area which are sequentially arranged along a preset direction; the stretched display screen has a stretched state in which the plurality of sub-display regions and the at least one pixel compensation region display together, and a non-stretched state. The embodiment of the invention can enable the display effect of the display screen when being stretched to be consistent with that before stretching.

Description

Stretching display screen and control method thereof

Technical Field

The invention relates to the technical field of display, in particular to a stretching display screen and a control method thereof.

Background

The flexible screen includes a curved screen, a foldable display screen, a stretchable display screen, and the like, wherein the curved screen and the foldable display screen are already commercially available. Due to the characteristics of low power consumption, thin thickness, flexibility and the like, the flexible screen is favored by consumers.

However, the arc-shaped screen and the foldable display screen, etc. do not really realize the flexible screen. Recently, various manufacturers have tried to implement an organic light emitting display having a stretchable structure, which is expected to be able to withstand pressure and tension while being pulled, in addition to bending and folding, to actually implement a flexible screen. However, when the stretchable display screen is stretched and deformed, the display effect of the display screen is inevitably changed, so that the display quality before and after stretching is different, and even the display quality is deteriorated.

Disclosure of Invention

In view of this, embodiments of the present invention provide a stretching display screen and a control method thereof, which can ensure display quality when the stretching display screen is stretched.

A first aspect of embodiments of the present invention is to provide a stretched display screen, the stretched display screen including a display area, the display area including a plurality of sub-display areas, at least one stretching area, and at least one pixel compensation area sequentially arranged along a predetermined direction; the stretched display screen has a stretched state in which the plurality of sub-display regions and the at least one pixel compensation region display together, and a non-stretched state.

In some embodiments, each of the plurality of sub-display regions includes a plurality of normal sub-pixels, each of the at least one pixel compensation region includes a plurality of compensation sub-pixels, and each of the at least one compensation sub-pixels and the normal sub-pixels adjacent thereto constitute a light emitting unit in a stretched state.

In some embodiments, the opening area of the compensation sub-pixel of the same color is the same as the opening area of the regular sub-pixel.

In some embodiments, the display area includes a plurality of sub-display areas, the plurality of sub-display areas are arranged in an array, or each sub-display area extends along the length direction/width direction of the display area, and the plurality of sub-display areas are arranged in parallel.

Optionally, in another embodiment, sub-display regions are respectively disposed on two sides of each pixel compensation region in at least one pixel compensation region, each sub-display region includes a plurality of regular sub-pixels, each pixel compensation region includes a plurality of compensation sub-pixels, and the regular sub-pixels located in two adjacent sub-display regions share the compensation sub-pixel between the two.

Optionally, in another embodiment, at least one stretching region and one pixel compensation region are arranged between two adjacent sub-display regions along a predetermined direction, and when there are two or more stretching regions, the pixel compensation region is arranged between the two stretching regions.

Optionally, in another embodiment, the sub-display area includes at least one pixel unit, each pixel unit includes three sub-pixel units arranged in an isosceles triangle, and a perpendicular bisector of the isosceles triangle is parallel to the predetermined direction.

In some embodiments, the stretching region extends through the substrate, the TFT layer, and the OLED layer of the stretched display screen in a direction perpendicular to the direction in which the display screen is stretched.

In some embodiments, the stretching region, the sub-display region, and the pixel compensation region have the same layer structure; the materials of the layers in the stretching area are shape memory polymers.

In some embodiments, the stretching display screen comprises an encapsulation layer and a flexible protection layer positioned outside the encapsulation layer, wherein the flexible protection layer adopts polydimethylsiloxane

A second aspect of an embodiment of the present invention is to provide a method for controlling stretching of a display screen, including: determining whether the stretched display screen is stretched; when tensile display screen is stretched, control a plurality of sub-pixels and at least one compensation sub-pixel and show, wherein, the display screen includes a plurality of sub-display areas and at least one stress release module, every sub-display area includes a plurality of functional film layers of superpose, a plurality of functional film layers include the luminescent layer, be provided with a plurality of sub-pixels in the luminescent layer, every stress release module includes the stress release layer, the stress release layer sets up between the luminescent layer in the adjacent sub-display area in a plurality of sub-display areas, the stress release layer includes at least one compensation sub-pixel and stress release region.

In some embodiments, controlling the plurality of sub-pixels and the at least one compensation sub-pixel to display while the stretched display screen is stretched comprises: and controlling a plurality of sub-pixels adjacent to the at least one compensation sub-pixel to display a second color, and controlling the at least one compensation sub-pixel and at least one sub-pixel of the adjacent plurality of sub-pixels to display the second color, wherein the plurality of sub-pixels comprise red, green and blue sub-pixels, the at least one compensation sub-pixel comprises at least one of the red, green and blue sub-pixels, and the color of the at least one compensation sub-pixel of the plurality of sub-pixels adjacent to the at least one compensation sub-pixel jointly form three primary colors.

A second aspect of embodiments of the present invention provides a display device comprising a stretched display screen according to any one of claims 1 to 10.

According to the embodiment of the invention, the stretchable area is added in the stretching display screen, so that the stretching display screen can be stretched and the like. Meanwhile, the compensation sub-pixels are arranged, and when the stretching display screen is stretched, the compensation sub-pixels and the conventional pixels are controlled to display together, so that the display effect of the display screen is consistent with that before stretching, and the display quality of the stretching display screen is guaranteed.

Drawings

Fig. 1 is a cross-sectional view of a stretched display screen according to an embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating an arrangement of sub-pixels in a stretched display panel according to an embodiment of the present invention.

Fig. 3 is a schematic diagram illustrating an arrangement of sub-pixels in a stretched display panel according to another embodiment of the present invention.

Fig. 4 is a cross-sectional view of a stretched display screen according to another embodiment of the present invention.

Fig. 5 is a flowchart illustrating a method for controlling stretching of a display screen according to an embodiment of the invention.

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.

Fig. 1 is a cross-sectional view of a stretched display screen 100 according to an embodiment of the invention.

The stretch display screen 100 includes: comprises a display area including a plurality of sub-display areas (or pixel structures) 110, 120, 130, at least one stretching area 141 and at least one pixel compensation area 142 sequentially arranged in a predetermined direction; the stretched display screen has a stretched state in which the plurality of sub-display regions and the at least one pixel compensation region display together, and a non-stretched state.

According to an embodiment of the present invention, each of the plurality of sub-display regions includes a plurality of normal sub-pixels, each of the at least one pixel compensation region includes a plurality of compensation sub-pixels, and each of the at least one compensation sub-pixels and the normal sub-pixels adjacent thereto constitute a light emitting unit in a stretched state.

Specifically, each sub-display section may include: a plurality of functional mode layers of stack, a plurality of functional mode layers include: and a light emitting layer in which a plurality of regular sub-pixels are disposed. The stretching region 141 and the pixel compensation region 142 may constitute stress relief modules 140, wherein each stress relief module includes: and the stress release layer is arranged between the light emitting layers in the adjacent sub-display areas and comprises compensation sub-pixels and stress release areas. Further, the stretched display screen 100 may further include a control unit (or controller) for controlling the regular sub-pixels and the adjacent compensation sub-pixels to display together when the stretched display screen is stretched.

For example, when the normal sub-pixels in a sub-display region are the sub-pixel R and the sub-pixel G, and the adjacent compensation pixel is the sub-pixel B, the controller may control the sub-pixel R, the sub-pixel G, and the sub-pixel B in the sub-display region to be displayed together as a pixel unit when the stretching display screen is in the stretching state. Or when the normal sub-pixel in a certain sub-display area is the sub-pixel B, the adjacent compensation pixels are the sub-pixel R and the sub-pixel B, and when the stretching display screen is in the stretching state, the controller may control the sub-pixel R, the sub-pixel G and the sub-pixel B in the sub-display area to be displayed together as a pixel unit.

According to the embodiment of the invention, the stretchable area is added in the stretching display screen, so that the stretching display screen can be stretched and the like. Meanwhile, the compensation sub-pixels are arranged, and when the stretching display screen is stretched, the compensation sub-pixels and the conventional pixels are controlled to display together, so that the display effect of the stretching display screen is consistent with that before stretching, and the display quality of the stretching display screen is guaranteed.

According to the embodiment of the invention, the control unit is further used for controlling the plurality of sub-pixels to display when the stretching display screen 100 is not stretched; when the stretching deformation of the stretching display screen 100 is recovered, the at least one compensation sub-pixel is controlled to stop displaying, and at this time, the stretching display screen 100 can recover the normal display effect before being stretched.

According to an embodiment of the present invention, the opening area of the compensation sub-pixel of the same color is the same as the opening area of the normal sub-pixel.

It should be understood that only the first sub-display area 110, the second sub-display area 120, the third sub-display area 130, the stress relieving module 140 and the second stress relieving module 150 are shown in fig. 1, and other sub-display areas and stress relieving modules are not shown. Embodiments of the present invention are not limited with respect to the number of pixel consumer architectures and stress relief modules. Meanwhile, the control unit is also not shown.

Each of the sub-display regions includes a plurality of functional mode layers including a light emitting layer, which are stacked. As shown in fig. 1, the first sub-display area 110 may include a first light emitting layer 111, the second sub-display area 120 may include a second light emitting layer 121, the first stress releasing module 140 includes a first stress releasing layer 141, and the first stress releasing layer 141 is disposed between the first light emitting layer 111 and the second light emitting layer 121, wherein a plurality of sub-pixels are disposed in the first light emitting layer 111 and the second light emitting layer 121, respectively, and the first stress releasing module 140 includes at least one compensation sub-pixel and a stress releasing region. Since the structure of each sub-display area/each stress relief module is similar, the structure of the third sub-display area 130 and the second stress relief module 150 will not be described herein.

According to an embodiment of the invention, the stretching region penetrates through the substrate, the TFT layer and the OLED layer of the stretched display screen in a direction perpendicular to the stretched display screen.

Specifically, a Thin Film Transistor (TFT) device layer disposed under the light emitting layer; each stress relief module further comprises: and the second stress release layer is arranged between the TFT layers in the adjacent sub-display areas in the plurality of sub-display areas, wherein at least one TFT is arranged in the second stress release layer. As shown in fig. 1, a TFT layer may be disposed under the first light emitting layer 111, a second stress relieving layer may be disposed under the first stress relieving layer 141, and at least one TFT may be disposed in the second stress relieving layer. The control unit may be adapted to control the display of the at least one compensation sub-pixel by means of the TFT in the second stress relief layer.

It should be understood that the compensation pixels in the first stress relieving layer may also share a TFT with an adjacent sub-display region, in which case the TFT may not be provided in the second stress relieving layer.

According to the embodiment of the invention, the second stress release layer is arranged below the first stress release layer, so that the TFT layer in the stretching display screen can be stretched along different directions. Meanwhile, the TFT arranged in the second stress release layer can control the display of at least one compensation sub-pixel in the first stress release layer and pixels in an adjacent sub-display area, so that the compensation sub-pixel displays proper color, and the display quality is improved.

Optionally, in another embodiment, each functional film layer further comprises: the packaging layer is arranged on the luminous layer; each stress relief module further comprises: and the third stress release layer is arranged on the first stress release layer and between the packaging layers of the adjacent sub-display areas. As shown in fig. 1, an encapsulation layer may be disposed over the first light emitting layer 111, and a third stress relief layer may be disposed over the first stress relief layer 141.

According to the embodiment of the invention, the packaging layer is arranged above the light-emitting layer, so that adverse effects of water vapor and oxygen on the light-emitting layer can be prevented, and the aging of devices in the light-emitting layer is slowed down, thereby increasing the brightness and prolonging the service life of the light-emitting layer. Meanwhile, the third stress release layer is arranged above the first stress release layer, so that the packaging layer of the stretching display screen can meet the stretchable requirement.

According to an embodiment of the present invention, the stretching region, the sub display region, and the pixel compensation region have the same layer structure; each layer of material in the stretching area is shape memory polymer.

Specifically, stretching the display screen further comprises: the flexible organic layer is arranged under the functional film layers and the at least one stress release module. As shown in fig. 1, a whole flexible organic layer may be disposed under the first functional film 110, the second functional film 120, the third functional film 130, the first stress relief module 140, and the second stress relief module 150.

Specifically, set up flexible organic layer under a plurality of functional film layers and at least one stress release module, can be so that when tensile display screen is stretched, the produced stress of tensile absorption that the non-stress release region of tensile display screen is better reaches better tensile effect. Meanwhile, the whole layer of stretching substrate is directly arranged, and the manufacturing steps and procedures of the flexible organic layer can be reduced, so that the manufacturing difficulty is reduced, the manufacturing time is saved, and the manufacturing cost is reduced.

According to the embodiment of the invention, the stretching display screen comprises an encapsulation layer and a flexible protection layer positioned outside the encapsulation layer, wherein the flexible protection layer adopts polydimethylsiloxane.

Specifically, the flexible protection layer, also called a flexible stretching organic layer, is disposed on the plurality of functional film layers and the at least one stress release module. As shown in fig. 1, an entire flexible tensile organic layer may be disposed above the sub-display area 110, the sub-display area 120, the sub-display area 130, the first stress relief module 140, and the second stress relief module 150. Of course, the flexible tensile organic layer and the flexible organic layer may be simultaneously disposed above and below the plurality of sub-display regions and the at least one stress relief pattern.

Based on the embodiment of the invention, the flexible stretching organic layer is arranged on the functional film layers and the at least one stress release module, so that when the stretching display screen is stretched, the non-stress release area of the stretching display screen can better absorb the stress generated by stretching, and a better stretching effect is achieved. Meanwhile, the whole flexible stretching organic layer is directly arranged, and the manufacturing steps and procedures of the flexible stretching organic layer can be reduced, so that the manufacturing difficulty is reduced, the manufacturing time is saved, and the manufacturing cost is reduced.

Specifically, the material of the first stress release layer, the second stress release layer and the third stress release layer may be a shape memory polymer, for example, a styrene or epoxy polymer, which can recover its original shape after being stretched and deformed by stimulation of an external condition (e.g., heat, electricity, light, chemical induction, etc.); the material of the flexible organic layer and the flexible tensile organic layer may be Polydimethylsiloxane (PDMS).

According to the embodiment of the invention, the sub-display area comprises at least one pixel unit, each pixel unit comprises three sub-pixel units arranged in an isosceles triangle, and a vertical bisector of the isosceles triangle is parallel to the predetermined direction.

Specifically, the sub-pixel units located in the light emitting layer may be filled with light emitting components, for example, Organic Light Emitting Diodes (OLEDs) of Red (Red), Green (Green), and Blue (Blue). As shown in fig. 1, when the OLED is turned on by the control unit, the color displayed by each OLED in the first light-emitting layer 111 or the second light-emitting layer 121 is the color of the above sub-pixels, so the color displayed by the sub-pixels may also include Red (Red), Green (Green) and Blue (Blue), which are abbreviated as R, G and B, for blending out light of various colors, and the visual and equal luminance mixture of the three colors may blend out white light. It should be understood that the plurality of sub-pixels may include 3 sub-pixels, 4 sub-pixels, and the like, which is not limited by the embodiment of the present invention.

Each stress release module can be arranged between any two adjacent functional film layers, and the stress release layer in each stress release module can also be arranged between the light emitting layers of the adjacent functional film layers, wherein the stress release layer comprises at least one compensation sub-pixel and a stress release area, and the stress release area can be at least positioned on one side of the at least one compensation sub-pixel. As shown in fig. 1, the first stress releasing module 140 includes a first stress releasing layer 141, and the first stress releasing layer 141 is disposed between the first light emitting layer 111 and the second light emitting layer 121. The first stress relieving layer 141 includes at least one compensation sub-pixel and a stress relieving region, and the at least one compensation sub-pixel may include at least one of sub-pixels of displays R, G and B, for example, the at least one compensation sub-pixel may include 3 sub-pixels of displays R, G and B, may also include sub-pixels of displays B only, and may also include sub-pixels of displays R and G only, which is not limited by the embodiments of the present invention.

The control unit may be disposed below the flexible organic layer, or may be disposed at other positions as long as it is connected to other units in the stretch display panel 100, for example, the other units may be a plurality of functional film layers and at least one stress relief module, and the connection manner may be electrical connection. The control unit may be adapted to control the display of the at least one compensation sub-pixel and the plurality of sub-pixels by controlling the TFTs when the stretch display screen 100 is stretched. Of course, the stretching display screen may be stretched, bent or pressed, and the like, and when the stretching display screen is stretched to perform operations such as bending or pressing, the display state of each pixel on the stretching display screen is similar to the display state of each pixel during stretching, and details are not repeated here. In addition, the stretching display screen can comprise at least one control unit, and the TFTs of different functional film layers in the stretching display screen can be controlled by one control unit or different control units.

According to an embodiment of the present invention, the display area may include a plurality of sub-display areas, the plurality of sub-display areas are arranged in an array, or each sub-display area extends along a length direction/a width direction of the display area, and the plurality of sub-display areas are arranged in parallel.

According to the embodiment of the invention, two sides of each pixel compensation area in at least one pixel compensation area are respectively provided with a sub-display area, the sub-display area comprises a plurality of conventional sub-pixels, the pixel compensation area comprises a plurality of compensation sub-pixels, and the conventional sub-pixels in two adjacent sub-display areas share the compensation sub-pixels between the two conventional sub-pixels.

According to the embodiment of the invention, at least one stretching area and one pixel compensation area are arranged between two adjacent sub-display areas along the preset direction, and when the at least one stretching area is two or more, the pixel compensation area is arranged between the two stretching areas.

Specifically, the at least one stress relief module includes at least one row or column stress relief module, the at least one row or column stress relief module is respectively located between adjacent row or column functional films, and a stress relief region is disposed between the at least one compensation sub-pixel and the adjacent at least one sub-display region.

Specifically, when the tensile display screen is designed to be tensile along the row direction of the sub-display areas of the tensile display screen, a plurality of rows of stress release modules are arranged along the row direction of the tensile display screen, and each row of stress release modules is located between two rows of sub-display areas. When the stretching display screen is designed to be stretched along the column direction of the sub-display area of the stretching display screen, the plurality of rows of stress release modules are arranged along the column direction of the stretching display screen, and each row of stress release modules is positioned between two rows of pixels. Correspondingly, the stress release region in the stress release module can be disposed on one side of the compensation sub-pixel, or disposed on both sides of the compensation sub-pixel, i.e. between the compensation sub-pixel and the sub-pixels in the adjacent row or column.

It should be understood that, in the embodiment of the present invention, a row of stress relief modules may be disposed between adjacent rows of sub-display regions, and a column of stress relief modules may be disposed between adjacent columns of sub-display regions, so that the tensile display screen may be subjected to tensile deformation in any direction.

It should also be understood that the sub-display areas described above may be all sub-display areas on the entire stretched display screen, or may be sub-display areas on a partial area (e.g., the middle) of the stretched display screen.

According to an embodiment of the invention, the at least one compensation sub-pixel comprises red, green and blue sub-pixels; and the control unit is specifically used for controlling the plurality of sub-pixels adjacent to the at least one compensation sub-pixel to display the first color and controlling the at least one compensation sub-pixel to display the first color when the stretching display screen is stretched.

Fig. 2 is a schematic diagram illustrating an arrangement of sub-pixels in a stretched display panel according to an embodiment of the present invention. The embodiment of fig. 2 is an example of the stretched display screen of fig. 1.

The stretch display screen 200 includes a first sub-display area 210, a second sub-display area 220 and a first stress releasing module 240, wherein the first sub-display area 210, the second sub-display area 220 and the first stress releasing module 240 are similar to the first sub-display area 110, the second sub-display area 120 and the first stress releasing module 140 in structure, and are not described herein again.

As shown in fig. 2, the first stress relieving layer in the first stress relieving module 240 includes 3 sub-pixels 242 for displaying R, G and B, a stress relieving region 243 and a stress relieving region 244. The light emitting layers in the first sub-display region 210 and the second sub-display region 220 are also respectively provided with 3 sub-pixels for displaying R, G and B, wherein the width of at least one compensation sub-pixel may be smaller than the width of a plurality of sub-pixels in the sub-display region, the arrangement modes of the sub-pixels in the first sub-display region 210, the second sub-display region 220 and the first stress relieving module 240 may be the same or different, and the stress relieving region 243 and the stress relieving region 244 may exist at the same time or only one of them.

When the stretched display screen 200 is not stretched, the control unit may be configured to control the 3 sub-pixels in the first sub-display area 210 and the second sub-display area 220 to display respective colors, and of course, the 3 compensation sub-pixels in the first stress releasing module 240 are not lighted to display colors. When the stretching display screen is stretched, the control unit may be configured to control the 3 compensation sub-pixels in the first stress releasing module 240 and the 3 sub-pixels in the first sub-display area 210 or the second sub-display area 220 to display the same color. For example, when the stretched display screen 200 is not stretched, the control unit may be configured to control 3 sub-pixels in the first sub-display section 210 and the second sub-display section 220 to display purple and wine red, respectively. When the stretching display screen is stretched, the control unit may be configured to control the 3 compensation sub-pixels in the first stress releasing module 240 to display purple, or to control the 3 compensation sub-pixels in the first stress releasing module 240 to display wine red. When the stretching deformation of the stretching display screen is recovered, the control unit may further be configured to control the 3 compensation sub-pixels in the first stress releasing module 240 to be turned off, and the 3 sub-pixels in the first sub-display area 210 and the second sub-display area 220 display the original color.

Alternatively, the at least one compensation sub-pixel in fig. 2 may also comprise a compensation sub-pixel for display B. At this time, the 3 sub-pixels in the first sub-display section 210 are arranged from left to right in the order of R, G and B, and the 3 sub-pixels in the second sub-display section 220 are arranged from left to right in the order of B, R and G. The compensation sub-pixel of display B shares sub-pixels displaying R and G with 3 sub-pixels in the first sub-display region 210 or 3 sub-pixels in the second sub-display region 220; the at least one compensation subpixel in fig. 2 may further include compensation subpixels displaying R and G. At this time, the 3 sub-pixels in the first sub-display section 210 are arranged in the order of B, R and G from left to right, and the 3 sub-pixels in the second sub-display section 220 are arranged in the order of R, G and B from left to right. The compensation sub-pixels displaying R and G share the sub-pixel displaying B with 3 sub-pixels in the first sub-display region 210 or 3 sub-pixels in the second sub-display region 220.

Because when tensile display screen is by tensile deformation, original pixel interval increases, can cause the influence to the luminous condition in tensile region to make tensile display screen's display quality reduce, the display effect worsens. Based on the embodiment of the invention, the compensation sub-pixels can be controlled to emit light through the control unit, so that the image display quality of the stretched display screen is enhanced when the stretched display screen is stretched, and the consistency of the display quality of the stretched display screen before and after stretching is further ensured.

According to an embodiment of the present invention, the plurality of sub-pixels includes red, green, and blue sub-pixels; the at least one compensation sub-pixel comprises at least one of red, green and blue sub-pixels, wherein the color of at least one sub-pixel of the plurality of sub-pixels adjacent to the at least one compensation sub-pixel and the color of the at least one compensation sub-pixel jointly form three primary colors; and the control unit is specifically configured to control the plurality of sub-pixels adjacent to the at least one compensation sub-pixel to display the second color and control the at least one compensation sub-pixel and at least one of the plurality of adjacent sub-pixels to display the second color when the stretching display screen is stretched.

Fig. 3 is a schematic diagram illustrating an arrangement of sub-pixels in a stretched display panel according to another embodiment of the present invention. The embodiment of fig. 3 is an example of the stretched display screen of fig. 1.

The following description will take the first sub-display area 310, the second sub-display area 320, the third sub-display area 330, the first stress releasing module 340 and the second stress releasing module 350 in the same row of the stretching display screen 300 as an example, wherein the first sub-display area 310, the second sub-display area 320, the third sub-display area 330, the first stress releasing module 340 and the second stress releasing module 350 are similar to the first sub-display area 110, the second sub-display area 120, the third sub-display area 130, the first stress releasing module 140 and the second stress releasing module 150 in structure, and are not repeated herein.

As shown in fig. 3, 3 sub-pixels are disposed in the light emitting layer of the first sub-display area 310 to respectively display R, G and B, and 3 sub-pixels are disposed in the light emitting layers of the second sub-display area 320 and the third sub-display area 330, and although they display the same color as the 3 sub-pixels in the first sub-display area 310, the arrangement is not necessarily the same. The first stress releasing layer of the first stress releasing module 340 includes a compensation sub-pixel 342 and a stress releasing region 343 and a stress releasing region 344 for displaying B, and the compensation sub-pixel 342 for displaying B and its adjacent sub-pixels for displaying R and G together form three primary colors. The second stress relief module 350 includes compensation sub-pixels for displaying R and G, and the compensation sub-pixels and the adjacent sub-pixels for displaying B form three primary colors.

For example, when the stretched display screen 300 is not stretched, the control unit may be configured to control the sub-pixels in the first sub-display area 310 and the second sub-display area 320 to display the second color and the third color, respectively, and of course, the compensation sub-pixel of display B is not lit to display the color at this time. When the stretch display screen 300 is stretched, the control unit may be configured to control the sub-pixels in the first sub-display area 310 and the second sub-display area 320 to display the second color and the third color, respectively, and may also be configured to control the sub-pixels in the first sub-display area 310 and/or the second sub-display area 320 to display R and G and the compensation sub-pixel in the first stress relief module 340 to display B and the second color and/or the third color together. For example, when the stretched display screen 300 is not stretched, the control unit may be configured to control the sub-pixels displaying R, G and B in the first sub-display area 310 to display a second color, e.g., light blue, and to control the sub-pixels displaying R, G and B in the second sub-display area 320 to display a third color, e.g., dark blue. When the stretch display panel 300 is stretched, the control unit may be configured to control the compensation sub-pixel displaying B and the sub-pixels displaying R and G in the first sub-display area 310 to display a second color, i.e., light blue; alternatively, the control unit may be configured to control the compensation sub-pixel displaying B and the sub-pixels displaying R and G in the second sub-display area 320 to display the third color, i.e., dark blue; alternatively, the control unit may be further configured to control the compensation sub-pixel of the display B and the sub-pixels of the first sub-display area 310 and the second sub-display area 320 displaying R and G to display the second color and the third color, i.e., light blue and deep blue. Meanwhile, no matter the stretching display screen 300 is not stretched or is stretched, the display states of the third sub-display area 330 and the second stress releasing module 350 are similar to the display states of the sub-display area and the stress releasing module, and are not described herein again. In addition, when the stretching deformation of the stretching display screen 300 is recovered, the control unit may be further configured to control at least one of the compensation sub-pixels in the first stress releasing module 340 and the second stress releasing module 350 to be disconnected, and the plurality of sub-pixels in the first sub-display area 310, the second sub-display area 320, and the third sub-display area 330 respectively display the original color.

Alternatively, at least one of the compensation sub-pixels in the first stress releasing module 340 and the second stress releasing module 350 may also include 3 sub-pixels for displaying R, G and B, and when the stretching display screen 300 is stretched, the control unit may control the 3 compensation sub-pixels and the 3 sub-pixels in the adjacent sub-display regions to display the same color, and the specific display state is similar to that of fig. 2, and is not repeated herein.

Based on the embodiment of the invention, when the stretching display screen is stretched, the compensation sub-pixel and the sub-pixel adjacent to the compensation sub-pixel are controlled to be jointly used for displaying the color adjacent to the compensation sub-pixel, so that the number of OLEDs in the stress release module is reduced, the process flow of the stretching display screen in the manufacturing process is simplified, and the manufacturing cost is reduced. Meanwhile, the image display quality of the stretched display screen is enhanced, and the consistency of the display quality of the stretched display screen before and after stretching is further ensured.

Fig. 4 is a cross-sectional view of an extended display screen 400 according to another embodiment of the present invention. The embodiment of fig. 4 is an example of the stretched display screen of fig. 1.

The stretchable display screen 400 includes a first sub-display area 410, a second sub-display area 420 and a stress releasing module 440, wherein the first sub-display area 410 and the second sub-display area 420 include a plurality of functional film layers stacked.

As shown in fig. 4, the first sub-display area 410 includes a flexible organic layer 412, a flexible substrate 413, a barrier layer 414, a TFT layer 415, an OLED layer 411, an encapsulation layer 416, and a flexible organic layer 417. The flexible substrate 413 is arranged on the flexible organic layer 412, the barrier layer 414 is arranged on the flexible substrate 413, the TFT layer 415 is arranged on the barrier layer 414, the OLED layer 411 is arranged on the TFT layer 415, the packaging layer 416 is arranged on the OLED layer 411, and the flexible stretching organic layer 417 is arranged on the packaging layer 416, wherein the barrier layer 414 can prevent the adverse effects of water vapor and oxygen on the TFT layer 415, slow down the aging of the TFT layer 415, so that the service life of the TFT layer 415 can be prolonged, and the flexible substrate 413 can absorb partial stress when the stretching display screen 400 is stretched, so that the substrate layer is more easily stretched.

In the embodiment of the present invention, 3 sub-pixels displaying R, G and B are disposed in the OLED layer 411, the thickness and material of the flexible organic layer 412 and the flexible organic layer 417 may be the same, the material of the flexible organic layer 412 and the flexible organic layer 417 is preferably PDMS, and the material of the flexible substrate 413 may be preferably Polyimide (Polyimide, PI). In addition, the structures of the second sub-display region 420 and other sub-display regions in the extended display 400 are similar to the first sub-display region 410, and are not described herein again.

The stress release module 440 is disposed between the first sub-display area 410 and the second sub-display area 420, and each layer of the stress release module 440 corresponds to each layer of the first sub-display area 410 and the second sub-display area 420 one to one, wherein each layer of the stress release module 440 may be referred to as a stress release layer, for example, 7 stress release layers may be disposed in the stress release module 420. As shown in fig. 4, a first stress release layer is disposed at a position corresponding to the flexible organic layer 412, a second stress release layer is disposed at a position corresponding to the flexible substrate 413 and above the first stress release layer, a third stress release layer is disposed at a position corresponding to the barrier layer 414 and above the second stress release layer, a fourth stress release layer is disposed at a position corresponding to the TFT layer 415 and above the third stress release layer, a fifth stress release layer is disposed at a position corresponding to the OLED layer 411 and above the fourth stress release layer, a sixth stress release layer is disposed at a position corresponding to the encapsulation layer 416 and above the fifth stress release layer, and a seventh stress release layer is disposed at a position corresponding to the flexible tensile organic layer 417 and above the sixth stress release layer.

In the embodiment of the present invention, at least one compensation sub-pixel is disposed in the fifth stress release layer corresponding to the OLED layer 411, at least one TFT is disposed in the fourth stress release layer corresponding to the TFT layer 415, the control unit controls the display of the plurality of sub-pixels and the at least one compensation sub-pixel by controlling at least one TFT in the TFT layer 415 and the fourth stress release layer, and the arrangement and display state of the plurality of sub-pixels and the at least one compensation sub-pixel in the OLED layer 411 may be as shown in fig. 2 or fig. 3, which is not described herein again. In the embodiment of the present invention, the material of each layer in the stress releasing module 440 may be the same, and is preferably a shape memory polymer, such as a styrene or epoxy polymer.

It should be noted that during the preparation of the stretch display panel 400, the entire PDMS layer may be laid on the glass substrate, and the operations are performed according to the above arrangement (except for the lowermost layer and the uppermost layer), and then the entire PDMS layer may be laid on the encapsulation layer of each sub-display region and the sixth stress release layer of each stress release module, and finally the stretch display panel 100 is flexibly peeled off from the glass substrate. In addition, in the process of manufacturing the stretch display panel 400, a stretch display panel without a stress release region may be manufactured first, then a groove of the stress release region is cut by laser, and then the shape memory polymer is filled in each layer of the stress release region. During filling, the stress relief layer can be filled layer by layer, or the stress relief layer can be filled to the third layer, the fourth layer and the fifth layer are filled again, and finally the uppermost layer is filled.

510, it is determined whether the stretched display screen is stretched.

And controlling the plurality of sub-pixels and the at least one compensation sub-pixel to display together when the stretching display screen is stretched 520.

And 530, when the stretching display screen is not stretched, controlling a plurality of sub-pixels to display.

In an embodiment of the invention, the stretching display screen comprises a plurality of sub-display areas and at least one stress release module, each sub-display area comprises a plurality of superposed functional mode layers, each functional mode layer comprises a light emitting layer, a plurality of sub-pixels are arranged in the light emitting layers, each stress release module comprises a stress release layer, each stress release layer is arranged between the light emitting layers in adjacent sub-display areas in the plurality of sub-display areas, and each stress release layer comprises at least one compensation sub-pixel and a stress release area.

Based on the embodiment of the invention, the display effect of the stretched display screen is consistent with that before stretching when the stretched display screen is stretched and deformed by controlling the at least one compensation sub-pixel and the plurality of sub-pixels to display, so that the display quality of the stretched display screen when the stretched display screen is stretched is ensured.

According to an embodiment of the present invention, controlling the plurality of sub-pixels and the at least one compensation sub-pixel to display when the stretching display screen is stretched comprises: and controlling a plurality of sub-pixels adjacent to the at least one compensation sub-pixel to display a second color, and controlling the at least one compensation sub-pixel and at least one sub-pixel of the adjacent plurality of sub-pixels to display the second color, wherein the plurality of sub-pixels comprise red, green and blue sub-pixels, the at least one compensation sub-pixel comprises at least one of the red, green and blue sub-pixels, and the color of the at least one compensation sub-pixel of the plurality of sub-pixels adjacent to the at least one compensation sub-pixel jointly form three primary colors.

According to the embodiment of the invention, when the stretching display screen is not stretched, the controlling the plurality of sub-pixels to display comprises the following steps: and controlling at least one compensation sub-pixel to stop displaying when the stretching deformation of the stretching display screen is recovered. Therefore, the original display effect of the stretching display screen can be kept unchanged when the stretching deformation is recovered.

The setting, connection, function, and the like of each unit in the control method for stretching the display screen may refer to the detailed description of the above embodiment section of the stretching display screen, and are not described herein again to avoid repetition.

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

1. A stretched display screen, comprising a display area comprising a plurality of sub-display areas, at least one stretching area and at least one pixel compensation area arranged sequentially along a predetermined direction; the stretched display screen has a stretched state and a non-stretched state, and in the stretched state, the plurality of sub-display regions and the at least one pixel compensation region are displayed together;

each of the plurality of sub-display regions includes a number of regular sub-pixels, each of the at least one pixel compensation region includes a number of compensation sub-pixels,

in the non-stretched state, none of the compensated sub-pixels is displayed;

in the stretched state, the color of the normal sub-pixel adjacent to at least one compensation sub-pixel and the color of the at least one compensation sub-pixel jointly form three primary colors, and the at least one compensation sub-pixel and the at least one normal sub-pixel adjacent to the at least one compensation sub-pixel form a pixel unit.

2. A stretched display screen according to claim 1, wherein the compensation sub-pixels of the same colour have the same open area as the regular sub-pixels.

3. The stretching display screen of claim 1 or 2, wherein the display area comprises a plurality of sub-display areas, the plurality of sub-display areas are arranged in an array, or each sub-display area extends along the length direction/width direction of the display area, and the plurality of sub-display areas are arranged in parallel.

4. The stretched display screen of claim 3, wherein each of the at least one pixel compensation regions has a sub-display region disposed on both sides thereof, and the normal sub-pixels in two adjacent sub-display regions share the compensation sub-pixels therebetween.

5. The stretched display screen of claim 3, wherein at least one stretching region and one pixel compensation region are arranged between two adjacent sub-display regions along the predetermined direction, and when the at least one stretching region is two or more, the pixel compensation region is arranged between the two stretching regions.

6. The stretching display screen of claim 3, wherein the sub-display area comprises at least one pixel unit, each pixel unit comprises three sub-pixel units arranged in an isosceles triangle, and a vertical bisector of the isosceles triangle is parallel to the predetermined direction.

7. The stretched display screen according to claim 1 or 2, wherein the stretching region extends through the substrate, the TFT layer and the OLED layer of the stretched display screen in a direction perpendicular to the stretched display screen.

8. A stretched display screen according to claim 7, wherein the stretched regions, the sub-display regions and the pixel compensation regions have the same layer structure; each layer of material in the stretching area is shape memory polymer.

9. The stretching display screen of claim 1 or 2, wherein the stretching display screen comprises an encapsulation layer and a flexible protection layer positioned outside the encapsulation layer, and the flexible protection layer adopts polydimethylsiloxane.

10. A display device comprising a stretched display screen according to any one of claims 1 to 9.