DISPLAY PANEL AND DISPLAY APPARATUS

A display panel includes a first display portion and at least one second display portion. The first display portion includes first sub-pixels and has at least one arc-shaped border. The second display portion is connected to an arc-shaped border and includes first sub-portions and one or more second sub-portions. The first sub-portion includes second sub-pixels, the first sub-portions are sequentially arranged along the arc-shaped border, and in a case where the first display portion and the second display portion are laid on a reference plane, any two adjacent first sub-portions have a gap therebetween. The second sub-portion includes third sub-pixels; at least one second sub-portion is located in a gap between two adjacent first sub-portions and is connected to at least one of the two adjacent first sub-portions. A Young's modulus of the first sub-portion is greater than a Young's modulus of the second sub-portion.

TECHNICAL FIELD

BACKGROUND

With the development of flexible organic light-emitting display apparatuses (organic light-emitting diode, OLED), forms of the display apparatuses have become increasingly diverse. For example, a display surface of a display apparatus can be made into a curved surface or a spherical surface. To achieve the above display apparatus, it is required that the display panel therein is capable of being stretched or compressed at at least some positions, so as to meet display requirements of the display panel for different curved surfaces.

SUMMARY

In an aspect, a display panel is provided. The display panel includes a first display portion and at least one second display portion. The first display portion includes a plurality of first sub-pixels and has at least one arc-shaped border. The second display portion is connected to an arc-shaped border of the first display portion and includes a plurality of first sub-portions and one or more second sub-portions. The first sub-portion includes a plurality of second sub-pixels. The plurality of first sub-portions are sequentially arranged along the arc-shaped border. In a case where the first display portion and the second display portion are laid on a reference plane, any two adjacent first sub-portions have a gap therebetween. The second sub-portion includes a plurality of third sub-pixels; at least one second sub-portion is located in a gap between two adjacent first sub-portions and is connected to at least one of the two adjacent first sub-portions. A Young's modulus of the first sub-portion is greater than a Young's modulus of the second sub-portion.

In some embodiments, a dimension of the at least one second sub-portion along a first direction is less than or equal to a dimension of the gap between the two adjacent first sub-portions along the first direction, where the first direction is substantially parallel to a tangential direction of the arc-shaped border.

In some embodiments, the second sub-portion is provided therein with a plurality of opening holes, and the plurality of opening holes are located between the plurality of third sub-pixels.

In some embodiments, the second sub-portion has a plurality of island regions and a plurality of bridge regions, and two adjacent island regions are connected by at least one bridge region therebetween; and the opening holes are arranged between adjacent island regions, between adjacent bridge regions, and between island regions and bridge regions that are adjacent. The plurality of third sub-pixels are distributed in the plurality of island regions. The second sub-portion further includes a plurality of signal lines, each third sub-pixel is electrically connected to at least one signal line, and the plurality of signal lines are distributed in the plurality of bridge regions.

In some embodiments, one second sub-portion is arranged between the two adjacent first sub-portions, and the one second sub-portion is connected to two side edges, proximate to each other, of the two adjacent first sub-portions.

In some embodiments, along a second direction and away from the first display portion, a dimension of the one second sub-portion along the first direction increases, where the first direction is substantially parallel to a tangential direction of the arc-shaped border, and the second direction is substantially parallel to a radial direction of the arc-shaped border.

In some embodiments, along a first direction and from each of the two adjacent first sub-portions to a center line of the one second sub-portion, a dimension of the one second sub-portion along a second direction decreases, where the first direction is substantially parallel to a tangential direction of the arc-shaped border, and the second direction is substantially parallel to a radial direction of the arc-shaped border.

In some embodiments, a border of the one second sub-portion away from the first display portion has a V-shape or an arc-shape, and along a direction from the border of the second sub-portion to the arc-shaped border, the border of the second sub-portion is concave.

In some embodiments, two second sub-portions are arranged between the two adjacent first sub-portions, and each second sub-portion is connected to a first sub-portion adjacent thereto; and in the case where the first display portion and the second display portion are laid on the reference plane, the two second sub-portions have a gap therebetween.

In some embodiments, along a second direction and away from the first display portion, a dimension of the gap between the two second sub-portions along the first direction increases, where the second direction is substantially parallel to a radial direction of the arc-shaped border, and the second direction is substantially parallel to a radial direction of the arc-shaped border.

In some embodiments, a dimension of the first sub-portion along a first direction is substantially constant, where the first direction is substantially parallel to a tangential direction of the arc-shaped border.

In some embodiments, the first display portion has a plurality of corners, and a border of each corner is an arc-shaped border in the at least one arc-shaped border; the at least one second display portion includes a plurality of second display portions, each second display portion is connected to an arc-shaped border of one of the corners. The first display portion further has a plurality of straight-line borders, and two adjacent arc-shaped borders are connected by a straight-line border therebetween. The display panel further comprises a plurality of third display portions, each third display portion is connected to a straight-line border of the plurality of straight-line borders; and in a case where the first display portion, the second display portions and the third display portions are laid on the reference plane, a second display portion and a third display portion adjacent thereto have a gap therebetween; and the third display portions each include a plurality of fourth sub-pixels.

In some embodiments, the at least one arc-shaped border includes one arc-shaped border, and the at least one second display portion includes one second display portion; and a shape of the first display portion is a closed-shape enclosed by the one arc-shaped border, and the plurality of first sub-portions and the one or more second sub-portions are arranged alternately around the first display portion and connected in sequence.

In some embodiments, a border, away from the first display portion, of each sub-portion among the plurality of first sub-portions and the one or more second sub-portions have an arc-shape, and along a direction from the arc-shaped border to the border of each sub-portion, the border of each sub-portion is convex.

In some embodiments, each third sub-pixel includes a third light-emitting device and a third pixel circuit electrically connected to the third light-emitting device. At least one third pixel circuit is arranged in the first display portion and/or a first sub-portion.

In some embodiments, the display panel further includes a plurality of scanning circuits and a plurality of control signal lines. Each scanning circuit is electrically connected to at least one third sub-pixel, and the scanning circuit is configured to turn on or turn off the at least one third sub-pixel. The plurality of control signal lines are electrically connected to the plurality of scanning circuits, and the plurality of control signal lines are configured to transmit signals required for operation to the plurality of scanning circuits. At least one scanning circuit is arranged in the first display portion and/or a first sub-portion, and/or at least one control signal line is arranged in the first display portion and/or a first sub-portion.

In some embodiments, in a case where the second display portion is laid on a reference curved surface, borders, away from the first display portion, of the plurality of first sub-portions and the one or more second sub-portions are substantially located in a same plane.

In some embodiments, a dimension of the first sub-portion along a first direction is substantially constant, or along a second direction and from the first display portion to the first sub-portion, the dimension of the first sub-portion along the first direction decreases, where the first direction is substantially parallel to a tangential direction of the arc-shaped border, and the second direction is substantially parallel to a radial direction of the arc-shaped border.

In some embodiments, the Young's modulus of the first sub-portion is less than or equal to a Young's modulus of the first display portion.

In another aspect, a display apparatus is provided. The display apparatus includes a substrate, and the display panel as described in any of the above embodiments. The substrate has a reference curved surface. The display panel is laid on the substrate, and the second display portion of the display panel is laid on the reference curved surface.

DETAILED DESCRIPTION

The phrase “A and/or B” includes following three combinations: only A, only B, and a combination of A and B.

As used herein, the term “if” is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting”, depending on the context. Similarly, depending on the context, the phrase “if it is determined” or “if [a stated condition or event] is detected” is optionally construed as “in a case where it is determined”, “in response to determining”, “in a case where [the stated condition or event] is detected”, or “in response to detecting [the stated condition or event]”.

The use of the phrase “configured to” herein means an open and inclusive expression, which does not exclude devices that are adapted to or configured to perform additional tasks or steps.

The terms such as “substantially” or “approximately” as used herein include a stated value and an average value within an acceptable range of deviation of a particular value determined by a person of ordinary skill in the art, where the acceptable deviation range is determined by a person of ordinary skill in the art in consideration of the measurement in question and the error associated with the measurement of a specific quantity (i.e., the limitation of the measurement system).

The terms “parallel”, “perpendicular” and “equal” as used herein include the stated conditions and the conditions similar to the stated conditions, and the range of the similar conditions is within the acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art in consideration of the measurement in question and the error associated with the measurement of a specific quantity (i.e., the limitation of the measurement system). For example, the term “parallel” includes absolute parallelism and approximate parallelism, and an acceptable range of deviation of the approximate parallelism may be, for example, a deviation within 5°; the term “perpendicular” includes absolute perpendicularity and approximate perpendicularity, and an acceptable range of deviation of the approximate perpendicularity may also be, for example, a deviation within 5°. The term “equal” includes absolute equality and approximate equality, and an acceptable range of deviation of the approximate equality may be, for example, a difference between two equals of less than or equal to 5% of either of the two equals.

It will be understood that, in a case where a layer or component is referred to as being on another layer or a substrate, it may be that the layer or component is directly on the another layer or substrate; or it may be that intermediate layer(s) exist between the layer or component and the another layer or substrate.

Some embodiments of the present disclosure provide a display apparatus1000. As shown inFIG.1A, the display apparatus1000may be any apparatus that can display an image whether in motion (e.g., video) or stationary (e.g., a still image), and whether textual or pictorial. For example, the display apparatus1000may be any product or component with a display function such as a TV, a notebook computer, a tablet computer, a mobile phone, an electronic photo, an electronic billboard or sign, a personal digital assistant (PDA), a navigator, a wearable device, an augmented reality (AR) equipment, or a virtual reality (VR) equipment.

In some embodiments, the display apparatus1000may be an electroluminescence display apparatus or a photoluminescence display apparatus. In a case where the display apparatus1000is an electroluminescent display apparatus, the electroluminescent display apparatus may be an organic electroluminescent display apparatus (organic light-emitting diode display apparatus, OLED display apparatus) or a quantum dot electroluminescent display apparatus (quantum dot light-emitting diode display apparatus, QLED display apparatus). In a case where the display apparatus1000is a photoluminescence display apparatus, the photoluminescence display apparatus may be a quantum photoluminescence display apparatus (quantum dot light-emitting display apparatus, QLED display apparatus). The type of the display apparatus1000is not limited in the embodiments of the present disclosure.

In some embodiments, the display panel100may be a flexible display panel. In this way, the display panel100can be bent and deformed to a certain extent, so as to meet the requirement of applying the display panel100to a curved display apparatus. For example, the curved display apparatus may be a curved screen, a rounded curved screen (a display apparatus having rounded corners where a curved surface at the rounded corner), a spherical screen, or the like.

In a case where the display panel100is a flexible display panel, the display panel100may include a flexible substrate. For example, a material of the flexible substrate may include one or more of polyethersulfone (PES), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyimide (PI), polycarbonate (PC), cellulose triacetate (TAC) and cellulose acetate propionate (CAP), which is not limited in embodiments of the present disclosure.

In a process of bending the display panel100from a plane state to form a curved surface, the display panel100needs to have a certain amount of deformation, and these deformations may be stretching deformation or compressive deformation.

In order to make a display panel deform to a certain extent and reduce stress on the display panel during the deformation process, a portion, configured to provide a curved surface, of the display panel will be cut to form a plurality of strip-shaped extending portions at intervals. In a case where the display panel is in a flattened state, adjacent strip-shaped extending portions have a gap therebetween. However, since there are gaps in the display panel, after a curved surface is formed on the display panel, the two adjacent strip-shaped extending portions may still have a gap therebetween or may have an overlapping portion therebetween, resulting in abnormal display of the display panel.

In order to solve the above technical problems, embodiments of the present disclosure provide a display panel100, referring toFIG.1AtoFIG.4, the display panel100includes a first display portion110and second display portion(s)120.

The display portion110includes a plurality of first sub-pixels P1. The first sub-pixel P1refers to a basic unit for displaying image information. For example, the first sub-pixels P1may include a first red sub-pixel for emitting red light ray, a first green sub-pixel for emitting green light ray, and a first blue sub-pixel for emitting blue light ray.

Referring toFIG.5A, for example, the first sub-pixel P1may include a first pixel circuit PX1and a first light-emitting device EL1. The first pixel circuit PX1includes at least one storage capacitor and a plurality of thin film transistors. For example, the first pixel circuit PX1may be a “7T1C” circuit, a “7T2C” circuit, a “3T1C” circuit, a “5T1C” circuit, or the like, where “T” refers to the thin film transistor, and a number before “T” refers to a number of thin film transistors; “C” refers to the storage capacitor, and a number before “C” refers to a number of storage capacitors. For example, the first light-emitting device EL1may be OLED or QLED.FIG.5Ashows an example in which the first pixel circuit PX1is a “7T1C” circuit having seven thin film transistors T1to T7, and one storage capacitor Cst.

The first display portion110has arc-shaped border(s)111. The arc-shaped border111is capable of adapting to different shapes of the display apparatus1000, making the display apparatus1000rich in form and suitable for different application scenarios.

For example, referring toFIG.1AandFIG.1B, the arc-shaped borders111may each be located at a corner of the first display portion110to form arc-shaped corners of the display panel100. In this way, referring toFIG.2, for example, the display panel100may be used to form a display apparatus1000having rounded corners, where the rounded corners are curved surfaces (hyperbolic curved surfaces), for example, a mobile phone with curved surfaces all around (each curved surface at a corner is formed by a second display portion120).FIG.1AandFIG.1Bare structural diagrams of the display panel laid on a reference plane, andFIG.2is a structural diagram of the second display portions120of the display panel laid on the reference curved surface RS of the substrate200.

For example, referring toFIG.3, the arc-shaped border111may alternatively have a closed shape connected end to end, so that a shape of the first display portion110is a closed-shape enclosed by the arc-shaped border111. For example, the arc-shaped border111may be in a shape of a circle, an ellipse or other irregular arc. In this way, referring toFIG.4, for example, the display panel100may be used to form a circular, or substantially circular, or spherical display apparatus. For example, the display panel100may be used to form a display screen of a circular watch, and a whole edge of the circular watch is a curved surface (a curved surface of the edge is formed by the second display portion120).FIG.3is a structural diagram of the second display portion120laid on a reference plane, andFIG.4is a structural diagram of the second display portion120laid on the reference curved surface of the substrate.

The second display portion120is laid on the reference curved surface of the substrate, and is configured to form a curved surface (hyperbolic curved surface) having a same shape as the reference curved surface.

Referring toFIG.1AandFIG.1B, each second display portion120is connected to an arc-shaped border111of the first display portion110. That is, the second display portion120is configured to provide a border of the display panel100. The second display portion120includes a plurality of first sub-portions21and at least one second sub-portion22(as shown inFIG.6AandFIG.6B).

The first sub-portion21includes a plurality of second sub-pixels P2, and a structure of the second sub-pixel P2may be same as that of the first sub-pixel P1, which will not be repeated here.

Referring toFIG.6AandFIG.6B, the plurality of first sub-portions21are sequentially arranged along the arc-shaped border111, that is, the plurality of first sub-portions21are sequentially arranged along an extending direction of the arc-shaped border111. In a case where the first display portion110and the second display portion120are laid on a reference plane, any two adjacent first sub-portions21have a gap therebetween.

It can be understood that the reference plane can be any plane, and the first display portion110and the second display portion120are laid on the reference plane. That is, the first display portion110and the second display portion120are in a flattened state without bending, curling, etc., or the first display portion110and the second display portion120are in a state where areas of orthographic projection of the first display portion110and the second display portion120on the reference plane each reach the maximum.

As shown inFIG.3andFIG.4, the second sub-portion22includes a plurality of third sub-pixels P3. A structure of the third sub-pixel P3is same as that of the first sub-pixel P1, which will not be repeated here. Since the first sub-portion21includes the second sub-pixels P2and the second sub-portion22includes the third sub-pixels P3, both the first sub-portion21and the second sub-portion are capable of displaying image information, so that the second display portion120is capable of displaying image information.

At least one second sub-portion22is located between two adjacent first sub-portions21and is connected to at least one first sub-portion21. That is, at least one second sub-portion22exists between two adjacent first sub-portion21. For example, at least one (one or two) second sub-portion22is provided between every two adjacent first sub-portions21.

A Young's modulus of the first sub-portion21is greater than a Young's modulus of the second sub-portion22. That is, compared with the first sub-portion21, the second sub-portion22has a smaller Young's modulus, and the second sub-portion22is capable of generating certain deformation, such as stretching deformation and compressive deformation. During a process of forming the curved surface on the second display portion120, a shape of the second sub-portion22can be adjusted by stretching or compressing the second sub-portion22, so that the second sub-portion22can fill the gap between the first sub-portions21, and do not overlap with adjacent first sub-portions21. It is beneficial to reduce the risk of abnormal display of the display panel100, improve the reliability of the curved region of the display panel100, and improve the reliability of the display apparatus1000.

For example, in the case where the second display portion120is laid on the reference plane, a size of the gap between two adjacent first sub-portions21can be designed, so that after the second display portion120forms the curved surface, the two adjacent first sub-portions21still have a preset gap therebetween. And it is designed that a second sub-portion22located between the two adjacent first sub-portions21is capable of filling the preset gap after forming the curved surface, and the two adjacent first sub-portions21have no overlapping region therebetween. In this way, in the process of forming the curved surface on the second display portion120, even if the gap between the two adjacent first sub-portions21has a deviation (such as a deviation caused by the influence of measurement accuracy, processing error, alignment accuracy, etc.), it is possible to adapt to the above-mentioned deviation through the deformation of the second sub-portion22.

For example, in a case where an actual gap between the two first sub-portions21is greater than the preset gap, the second sub-portion22can be stretched along a first direction M1to increase a width of the second sub-portion22(a dimension thereof along the first direction M1), so that the second sub-portion22can still fill the gap between the two first sub-portions21. Conversely, in a case where the actual gap between the two first sub-portions21is less than the preset gap, the second sub-portion22can be stretched along a second direction M2to reduce the width of the second sub-portion22, thereby avoiding overlapping between the first sub-portion21and the second sub-portion22.

In some embodiments, in the case where the first display portion110and the second display portion120are laid on the reference plane, dimension(s) of second sub-portion(s)22along the first direction M1is less than or equal to a dimension of a gap between two first sub-portions adjacent thereto along the first direction M1.

Referring toFIG.6A, in a case where the dimension(s) of the second sub-portion(s)22along the first direction M1is less than the dimension of the gap between the two adjacent first sub-portions21along the first direction M1, there may be two second sub-portions22between the two adjacent first sub-portions21, each second sub-portion22is connected to a side edge SE of a first sub-portion21adjacent to, and the two second sub-portions22have a gap therebetween.

Referring toFIG.6B, there may alternatively be one second sub-portion22between the two adjacent first sub-portions21, the one second sub-portion22is connected to a side edge SE of one of the two adjacent first sub-portions21, and have a gap with a side edge SE of the other first sub-portion21.

In this way, in a case where the second display portion120is attached to the reference curved surface by generating compressive deformation, the above-mentioned gap may provide a large compressive space for the second display portion120, which is beneficial to attach the second display portion120to a reference curved surface with a large curvature and a large curved surface area.

For example, referring toFIG.6A, in a case where two second sub-portions22are provided between two adjacent first sub-portions21, along the second direction M2and away from the first display portion110, a dimension of a gap between the two second sub-portions22along the first direction M1may gradually increase. In this way, it is more beneficial to lay the second display portion120on the reference curved surface.

In a case where the dimension(s) of the second sub-portion(s)22along the first direction M1is equal to the dimension of the gap between the two adjacent first sub-portions21along the first direction M1, that is, in the case where the second display portion120is laid on the reference plane, referring toFIG.1B,FIG.7AandFIG.7B, two sides of one second sub-portion22are respectively connected with side edges SE of the two adjacent first sub-portions21, that is, the one second sub-portion22is provided between the two adjacent first sub-portions21. In this way, in a case where the second display portion120is attached to the curved surface by generating stretching deformation, the second sub-portion22is capable of generating a great amount of stretching, which is more conducive to the attaching of the second display portion120to the reference curved surface.

An analysis of the process of forming the curved surface on the second display portion120shows that the farther a region of the second display portion120from the first display portion110is, the larger the amount of deformation needs to be generated in a case of forming the curved surface. It can be understood that in the following embodiments of the present disclosure, unless otherwise specified, the term “deformation” may include at least one of stretching deformation and compressive deformation.

Based on the above reasons, in some embodiments, referring toFIG.7A, in a case where one second sub-portion22is provided between two adjacent first sub-portions21, and the second sub-portion22is connected with two side edges, proximate to each other, of the two adjacent first sub-portions21, along the second direction M2and away from the first display portion110, a dimension of the second sub-portion22along the first direction M1gradually increases. That is, along the second direction M2and away from the first display portion110, a dimension of a gap between the two adjacent first sub-portions21along the first direction M1gradually increases. In this way, along the second direction M2and away from the first display portion110, the amount of deformation that can be produced by the second sub-portion22gradually increases, and further the amount of deformation that can be produced by an end of the second display portion120away from the first display portion110increases, which is beneficial for the second display portion120to be attached to the reference curved surface (to form a preset curved surface).

For example, along the second direction M2and away from the first display portion, a dimension of the first sub-portion21along the first direction M1is substantially constant (as shown inFIG.6AandFIG.6B) or gradually decreases (as shown inFIG.3andFIG.7A). In this way, along the second direction M2and away from the first display portion110, the dimension of the gap between the two adjacent first sub-portions21along the first direction M1gradually increases.

Here, the first direction M1is substantially parallel to a tangential direction of the arc-shaped border111, and the second direction M2is substantially parallel to a radial direction of the arc-shaped border111. It can be understood that since the arc-shaped border111is arc-shaped, the first direction M1at different positions of the second display portion120is not uniquely fixed, that is, the first direction M1at different positions may be different.

In some embodiments, referring toFIG.8, the second sub-portion22is provided therein with a plurality of opening holes221, and the plurality of opening holes221are located between the plurality of third sub-pixels P3. In this way, by providing the opening holes221in the second sub-portion22, the Young's modulus of the second sub-portion22is reduced, and the deformability that the second sub-portion22can produce is improved. The opening holes221are arranged between the plurality of third sub-pixels P3, which may reduce the influence of the opening holes221on the arrangement space of the third sub-pixels P3.

In some embodiments, referring toFIG.9, the second sub-portion22has a plurality of island regions222and a plurality of bridge regions223. Two adjacent island regions222are connected by at least one bridge region223. The opening holes221may be arranged between adjacent island regions222, between adjacent bridge regions223, and between island regions222and bridge regions223that are adjacent. For example, the opening hole221may have an “H” shape.

The plurality of third sub-pixels P3are distributed in the plurality of island regions222. The island regions222may provide sufficient arrangement space for the third sub-pixels P3.

For example, the plurality of island regions222are arranged in an array, and every two adjacent island regions222are connected by a bridge region223therebetween to realize the connection between the island regions222, thus ensuring the structural integrity of the display panel100. For example, every two adjacent island regions222are connected by one bridge region223therebetween.

For example, each island region222is provided with at least one third sub-pixel P3therein. For example, each island region222is provided with one third sub-pixel P3therein, and the third sub-pixel P3in each island region222includes one of a third red sub-pixel for emitting red light ray, a third green sub-pixel emitting green light ray, and a third blue sub-pixel for emitting blue light ray.

Referring toFIG.9, the second sub-portion22further includes a plurality of signal lines224, and each third sub-pixel P3is electrically connected to at least one signal line224. The at least one signal line224is distributed in multiple bridge regions223. The at least one signal line224extends along the bridge regions223to an island region222connected to the bridge regions223, so that the bridge regions223provide a wiring region for the at least one signal line224. The at least one signal line224is configured to transmit a voltage signal to at least one third sub-pixel P3electrically connected thereto, so as to control or drive the at least one third sub-pixel P3to emit light.

In some embodiments, referring toFIG.1AandFIG.1B, the first display portion110has a plurality of corners112, and a border of each corner112is an arc-shaped border111. The display panel100includes a plurality of second display portions120, and each second display portion120is connected to an arc-shaped border111of a corner112.

For example, a shape of the first display portion110may be a rectangle or substantially a rectangle, so that the first display portion110may have four corners112. The borders of the four corners112are all arc-shaped borders111. Based on this, the display panel100may include four second display portions120, and the four second display portions120are each connected to one corner112.

The first display portion110further has a plurality of straight-line borders113, and two adjacent arc-shaped borders111are connected by a straight-line border113therebetween. That is, the straight-line borders113and the arc-shaped borders111are arranged alternately and connected in sequence.

The display panel100further includes a plurality of third display portions130, and each third display portion130is connected to a straight-line border113. For example, the third display portion130can be bent to form a curved surface, and two ends of the third display portion along an extending direction of a straight-line border113where the third display portion is located are respectively connected to curved surfaces formed by two second display portions120.

It can be understood that the curved surface formed by the third display portion130can be a ruled curved surface (a curved surface obtained by revolving a straight line along a certain trajectory), and the curved surface formed by the second display portion120can be a hyperbolic surface (a curved surface obtained by revolving a curve along a certain trajectory).

In a case where the first display portion110, the second display portion120, and the third display portion130are laid on the reference plane, that is, in a case where the entire display panel100is laid on the reference plane, a second display portion120and a third display portion130adjacent thereto have a gap therebetween. In this way, a risk of mutual interference during the process of forming curved surfaces on the second display portion120and the third display portion130may be reduced, which is beneficial to a formation of respective curved surfaces of the second display portion120and the third display portion130.

In some embodiments, an edge of a second display portion120proximate to a third display portion130can be a second sub-portion22, so that the second sub-portion22can fill a gap between the second display portion120and the third display portion130through deformation, which is beneficial for the second display portion120and the third display portion130to form curved surfaces without gaps and without overlapping.

The third display portion130includes a plurality of fourth sub-pixels P4. A structure of the fourth sub-pixel P4may be same as that of the first sub-pixel P1, and embodiments of the present disclosure will not describe the fourth sub-pixel P4in detail.

In some embodiments, referring toFIG.1BandFIG.7B, there exists a case where a second display portion120is arranged at a corner of the first display portion110, a second sub-portion22is arranged between two adjacent first sub-portions21, and the second sub-portion22is connected to two side edges, proximate to each other, of the two adjacent first sub-portions21. In this case, along the first direction M1and from each of the two adjacent first sub-portions21to a center line (as shown inFIG.7Bwith “CL”) of the second sub-portion22, a dimension of the second sub-portion22along the second direction M2gradually decreases. That is, along the first direction M1, a dimension of a middle part of the second sub-portion along the second direction M2is less than a dimension of a part thereof at each of both sides along the second direction M2. A curved surface formed on the second sub-portion22will produce stretching deformation along the second direction M2; along the first direction M1and from each of the two adjacent first sub-portions21to the center line CL of the second sub-portion22, the dimension of the second sub-portion22along the second direction M2gradually becomes smaller, so that after curved surfaces are formed on second sub-portions22, ends of the second sub-portions away from the first display portion110are substantially flush, and thus edges of the display apparatus1000are substantially flush.

In some embodiments, referring toFIG.7B, along the first direction M1and from each of the two adjacent first sub-portions21to the center line of the second sub-portion22, the dimension of the second sub-portion22along the second direction M2gradually decreases, a border of the second sub-portion22away from the first display portion110has a V-shape or an arc-shape, and the V-shape or the arc-shape is concave along a direction proximate to the arc-shaped border111.

In some embodiments, referring toFIG.3, in a case where the shape of the first display portion110is the closed-shape enclosed by the arc-shaped border111, that is, the arc-shaped border111has the closed shape connected end to end, the plurality of first sub-portions21and the at least one second sub-portion22are arranged alternately around the first display portion110and connected in sequence, where the at least one second sub-portion22includes a plurality of second sub-portions.

In a process of laying the second display portion120on the reference curved surface, in a case where the second sub-portion22is required to produce stretching deformation along the first direction M1, along the first direction M1and from each of the two adjacent first sub-portions21to the center line of the second sub-portion22, a dimension of the second sub-portion22along the second direction M2may also be set to become gradually larger. In this way, it is also beneficial for the display apparatus1000to have edges that are substantially flush.

For example, referring toFIG.3, there exists a case where a border of the first display portion110is enclosed by the arc-shaped border111, a second sub-portion22is arranged between two adjacent first sub-portions21, and the second sub-portion22is connected to two side edges, proximate to each other, of the two adjacent first sub-portions21. In this case, a border of the second sub-portion22away from the first display portion110has a V-shape or an arc-shape, and the V-shape or the arc-shape is convex along a direction away from the arc-shaped border111.FIG.3shows an example in which the border of the second sub-portion22away from the first display portion110has an arc-shape.

In some embodiments, referring toFIG.3, along the second direction M2and away from the first display portion110, a dimension of a gap between two adjacent first sub-portions21along the first direction M1gradually increases. One second sub-portion22is arranged between the two adjacent first sub-portions21, and the one second sub-portion22is connected to two side edges, proximate to each other, of the two adjacent first sub-portions21, that is, in the case where the second display portion120is laid on the reference plane, the second sub-portion22fills up the gap between the two adjacent first sub-portions21. A shape of an end of the second sub-portion22away from the first display portion110is substantially same as that of the arc-shaped border111. For example, the end of the second sub-portion22away from the first display portion110is in an arc-shaped shape convex toward a side away from the first display portion110.

In some embodiments, a third pixel circuit PX3of at least one third sub-pixel P3is arranged in the first display portion110or a first sub-portion21(adjacent to a second sub-portion22where the third sub-pixel P3is located). In this way, it is beneficial to further reduce the Young's modulus of the second sub-portion22and improve the ability of the second sub-portion22to generate deformation.

For example, third pixel circuits of some third sub-pixels P3in the second sub-portion22proximate to the first sub-portion21are arranged in the first sub-portion21adjacent thereto; and third pixel circuit(s) of third sub-pixel(s) P3in the second sub-portion22proximate to the first display portion110is arranged in a region of the first display portion110adjacent to the second sub-portion22where the third sub-pixel(s) P3is located. Third pixel circuits of some of third sub-pixels P3in the second sub-portion22may also be arranged in the second sub-portion22.

For a third pixel circuit arranged in the first sub-portion21or the first display portion110, the third pixel circuit is electrically connected to a third light-emitting device (as shown inFIG.5Bwith “EL3”) in the second sub-portion22through a connection line.

In some embodiments, as shown inFIG.5B, the display panel100includes a plurality of scanning circuits (hereinafter referred to as third scanning circuits)30and a plurality of control signal lines (hereinafter referred to as third control signal lines)40. Each third scanning circuit30is electrically connected to at least one third sub-pixel P3, and the third scanning circuit30is configured to turn on or off the at least one third sub-pixel P3.

For example, the third scanning circuit30may be a shift register circuit (gate on array (GOA) circuit), which is configured to output a scanning signal to a third pixel circuit PX3. The scanning signal may be, for example, a gate signal for a data writing transistor to control the data writing transistor to be turned on or off, and then the third pixel circuit is turned on or off, so as to realize the purpose of turning on or off the third sub-pixel P3.

The plurality of third control signal lines40are electrically connected to the third scanning circuits30, and the plurality of third control signal lines40are configured to provide signals required for operation to the third scanning circuits30. For example, the third control signal line40may include, for example, at least one of a clock control signal line, a start (STV) signal line, a high-level constant voltage (VGH) signal line and a low-level constant voltage (VGL) signal line. The third scanning circuits30are controlled by the plurality of third control signal lines40to output scanning signals to the outside.

At least one third scanning circuit30is arranged in the first display portion110and/or the first sub-portion21, so that a pattern area of a conductive layer in the second sub-portion22may be reduced, and a number of circuits included in the second sub-portion22may be reduced, which is beneficial to reduce the Young's modulus of the second sub-portion22, and moreover, it is beneficial to reduce the difficulty of arranging opening holes in the second sub-portion22, and reduce the influence of the opening holes on the arrangement space of the third scanning circuit30.

For example, at least one third scanning circuit30is arranged in the first display portion110(as shown inFIG.5B). Alternatively, at least one third scanning circuit30is arranged in the first sub-portion21. Alternatively, a part of the third scanning circuits30is arranged in the first display portion110, and the other part of the third scanning circuits30is arranged in the first sub-portion21.

And/or, at least one third control signal line40is arranged in the first display portion110and/or the first sub-portion21, so that the wiring arrangement on the second sub-portion22may be simplified, which is beneficial to reduce the Young's modulus of the second sub-portion22, and moreover, it is beneficial to reduce the difficulty of arranging opening holes in the second sub-portion22, and reduce the influence of the opening holes on the arrangement space of the third control signal line40. For example, as shown inFIG.5B, the third control signal lines40are arranged in the first display portion110.

For example, at least one third control signal line40is arranged in the first display portion110(as shown inFIG.5B). Alternatively, at least one third control signal line40is arranged in the first sub-portion21. Alternatively, a part of the third control signal lines40is arranged in the first display portion110, and the other part of the third control signal lines40is arranged in the first sub-portion21.

It can be understood that the third control signal lines40need to be electrically connected to the third scanning circuits30, therefore, a region where the third scanning circuits30are provided may be provided therein with the third control signal lines40, which is beneficial to the third control signal lines40to transmit control signals to the third scanning circuits30. Alternatively, the third control signal lines40may be provided in a region where the third scanning circuits30are not provided, such as in a peripheral region of the display panel100(a region where image information is not displayed), so as to connect with an external chip (such as a timing control chip (TCON-IC)) and a circuit board (such as a driver circuit board (Source PCB)).

In some embodiments, the Young's modulus of the first sub-portion21is less than or equal to the Young's modulus of the first display portion110, that is, a structure of the first sub-portion21may be same as that of the first display portion110. In this way, the Young's modulus of the first sub-portion21and the first display portion110are substantially equal.

In the case where the second display portion120(the first sub-portions21and the second sub-portion(s)22) is laid on the reference plane, borders, away from the first display portion110, of the plurality of first sub-portions21and the at least one second sub-portion22are approximately in a same plane. That is, two ends, proximate to each other, of a first sub-portion21and a second sub-portion22that are adjacent are approximately flush. In this way, after the second display portion120is laid on the reference curved surface, a border the second display portion120is continuous, and transitions smoothly at a position where the first sub-portion21and the second sub-portion22are connected.