DISPLAY PANEL AND DISPLAY DEVICE

A display panel and a display device, the display panel includes: a driving backplane, including a substrate and an array layer located on a side of the substrate; a light emitting diode located on a side of the driving backplane; the array layer includes an organic layer, the organic layer includes an organic sublayer, and the organic sublayer is provided with an inorganic layer on a side of the organic sublayer away from the substrate.

CROSS-REFERENCE TO RELATED DISCLOSURE

The present disclosure claims priority to Chinese Patent Application No. 202311424528.7, filed on Oct. 30, 2023, the content of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of display, and in particularly, to a display panel and a display device.

BACKGROUND

Light emitting diode (LED) display panels are widely used in various display fields due to their excellent characteristics such as high brightness, high resolution, high response speed, and low power consumption. However, the existing LED display panel has poor water and oxygen resistance and is prone to display abnormality caused by water and oxygen erosion.

SUMMARY

In view of this, embodiments of the present disclosure provide a display panel and a display device for improving water and oxygen resistance of the display panel.

In a first aspect of the present disclosure, a display panel is provided.a driving backplane, comprising a substrate and an array layer located on a side of the substrate;a light emitting diode located on a side of the driving backplane, particularly, on a side of the array layer away from the substrate;

The array layer comprises an organic layer, the organic layer comprises an organic sublayer, and the organic sublayer is provided with an inorganic layer on a side of the organic sublayer away from the substrate.

In another aspect, the present disclosure provides a display device including the display panel described above.

One of the technical solutions described above has following beneficial effects.

Compared with organic materials, inorganic materials have better ability to block water and oxygen. In the embodiment of the present disclosure, by adding the inorganic layer above the organic sublayer of the array layer, the water and oxygen transmission path between the organic encapsulation layer and the organic sublayer can be cut off by using the inorganic layer, and water and oxygen are blocked from further permeating into the driving backplane in the vertical direction (perpendicular to the plane of the substrate), thereby effectively improving the water and oxygen block ability of the driving backplane, weakening the influence of water and oxygen on devices such as transistors in the array layer, and improving the display reliability of the screen.

In addition, it should also be noted that, compared with providing the inorganic encapsulation layer above the organic encapsulation layer, the embodiment of the present disclosure selects providing the inorganic layer above the organic sublayer in the array layer, which can protect devices such as transistors to a greater extent. Specifically, if an inorganic encapsulation layer is selected to be provided above the organic encapsulation layer, the inorganic encapsulation layer cannot cut off a water and oxygen transmission path between the organic encapsulation layer and the array layer, so that water and oxygen permeating into the organic encapsulation layer or permeating into the organic encapsulation layer through the side surface of the display panel in the manufacturing process cannot be blocked, and this part of water and oxygen can still further permeate into the array layer to affect devices such as transistors. The inorganic layer in the embodiments of the present disclosure is spaced between the organic encapsulation layer and the organic sublayer, and no matter water and oxygen permeating into the organic encapsulation layer during the manufacturing process, or water and oxygen permeating into the organic encapsulation layer through the side surface of the display panel, will be blocked by the inorganic layer, and cannot further permeate into the array layer.

DESCRIPTION OF EMBODIMENTS

In order to better understand the technical solution of the present disclosure, embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

It is to be made clear that the described embodiments are only some rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts fall within the protection scope of the present disclosure.

The terms used in the embodiments of the present disclosure are merely for the purpose of describing specific embodiments, but not intended to limit the present disclosure. The singular forms of “a”, “an” and “the” used in the embodiments of the present disclosure and the appended claims are also intended to indicate plural forms, unless clearly indicating others.

It should be understood that the term “and/or” used in the present disclosure represents an association relationship to describe associated objects, and can indicate three relationships, for example, A and/or B can indicate A alone, A and B, and B alone. In addition, the character “/” herein generally indicates an “or” relationship between the associated objects.

Unlike organic light emitting diode (OLED) display panels that use a stack of film layers to form an OLED device, LED display panels bond LED chips directly to the driving backplane. Since the height of the LED chip is large, a thicker organic encapsulation layer is generally used subsequently to encapsulate the LED chip.

However, the applicants have found in the research process that the water and oxygen resistance of the organic encapsulation material is poor, although the light-emitting layer of the LED chip is formed of an inorganic material and is less affected by water and oxygen, if the water and oxygen further permeate into the interior of the driving backplane, devices such as transistors in the driving backplane may be eroded, resulting in functional failure of the devices. It is verified that when the LED display panel of this type is subjected to the burn-in dynamic test under the conditions of the temperature of 85° C. and the relative humidity of 85%, it is very prone to display abnormality.

In this regard, an embodiment of the present disclosure provides a display panel, as shown inFIG.1andFIG.2,FIG.1is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, andFIG.2is another schematic structural diagram of a display panel according to an embodiment of the present disclosure. The display panel further includes a light emitting diode4located on a side of the driving backplane1, and the light emitting diode4may be a micro LED.

The array layer3includes an organic layer5, the organic layer5includes an organic sublayer6, and the organic sublayer6is provided with an inorganic layer7on a side away from the substrate2. Exemplarily, referring toFIG.1, the array layer3may include one organic sublayer6, or referring toFIG.2, the array layer3may also include at least two organic layers6.

Compared with organic materials, inorganic materials have better ability to block water and oxygen. In the embodiment of the present disclosure, by adding the inorganic layer7above the organic sublayer6of the array layer3, the water and oxygen transmission path between the organic encapsulation layer8and the organic sublayer6can be cut off by using the inorganic layer7, and water and oxygen are blocked from further permeating into the driving backplane1in the vertical direction x (perpendicular to the plane where the substrate2is located), thereby effectively improving the water and oxygen block ability of the driving backplane1, weakening the influence of water and oxygen on devices such as transistors9in the array layer3, and improving the display reliability of the screen.

In addition, it should also be noted that, compared with that the inorganic encapsulation layer is provided on the organic encapsulation layer8, in the embodiment of the present disclosure, the inorganic protection layer7is provided on the organic sublayer6in the array layer3, so that devices such as the transistor9may be protected to a greater extent. Specifically, if an inorganic encapsulation layer is selected to be provided above the organic encapsulation layer8, the inorganic encapsulation layer cannot cut off a water and oxygen transmission path between the organic encapsulation layer8and the array layer3, so that water and oxygen permeating into the organic encapsulation layer8or permeating into the organic encapsulation layer8through the side surface of the display panel in the manufacturing process cannot be blocked, and this part of water and oxygen can still further permeate into the array layer3to affect devices such as transistors9The inorganic layer7in the embodiments of the present disclosure is spaced between the organic encapsulation layer8and the organic sublayer6, and no matter water and oxygen permeating into the organic encapsulation layer8during the manufacturing process, or water and oxygen permeating into the organic encapsulation layer8through the side surface of the display panel, will be blocked by the inorganic layer7, and cannot further permeate into the array layer3.

In a feasible implementation, referring toFIG.1andFIG.2again, the array layer3includes a transistor9, and the transistor9may include an active layer p, a grid electrode g, a first electrode s, and a second electrode d. The organic sublayer6is located on a side of the transistor9away from the substrate2, that is, the inorganic layer7is located on a side of the transistor9away from the substrate2, and the inorganic layer7can block water and oxygen right above the transistor9, providing effective protection for the transistor9.

Optionally, the array layer3may further include structures such as a grid electrode insulating layer and an interlayer insulating layer. Exemplarily, referring toFIG.1, the array layer3further includes a buffer layer33, a grid electrode insulating layer34, a first interlayer dielectric layer35, and a second interlayer dielectric layer36. The buffer layer33is located between the active layer p of the transistor9and the substrate2, the grid electrode insulating layer34is located between the active layer p of the transistor9and the grid electrode g (the first pole plate cl of the capacitor C), the first interlayer dielectric layer35is located between the grid electrode g of the transistor9and the second pole plate c2of the capacitor C, and the second interlayer dielectric layer36is located between the second pole plate c2of the capacitor C and the first electrode s and the second electrode d of the transistor9. Further, the buffer layer33, the grid electrode insulating layer34, the first interlayer dielectric layer35and the second interlayer dielectric layer36may all be inorganic insulating layers, and the organic sublayer6is located on a side of the inorganic insulating layers away from the substrate2.

Further, referring toFIG.1andFIG.2again, the organic sublayer6is a planarization layer10, that is, it may also be understood that the inorganic layer7is located on a side of the original planarization layer10in the array layer3away from the substrate2.

In a feasible implementation, referring toFIG.1andFIG.2again, the array layer3includes at least one combined film layer11, the combined film layer11includes an organic sublayer6and an inorganic layer7adjacent to each other, and the inorganic layer7in the combined film layer11is located on a side of the organic sublayer6away from the substrate2. At least the sides of a part of the combined film layer11away from the substrate2are further provided with a first metal layer12.

Exemplarily, referring toFIG.1, the array layer3includes a combined film layer11, and in this case, the first metal layer12may include a bonding electrode13, and the bonding electrode13is electrically connected to the transistor9and the light emitting diode4respectively. Alternatively, referring toFIG.2, the array layer3includes at least two combined film layers11, the at least two combined film layers11include a first combined film layer19and a second combined film layer20, and the first combined film layer19is located on a side of the second combined film layer20away from the substrate2. The first metal layer12on the side of the second combined film layer20facing away from the substrate2may include structures such as an auxiliary connection portion14and a first signal line15(such as a power line), and the first metal layer12on the side of the first combined film layer19facing away from the substrate2may include a bonding electrode13.

When a metal film layer needs to be formed on the organic sublayer6, if the metal film layer is provided between the organic sublayer6and the inorganic layer7of the combined film layer11, when the metal film layer is formed, the organic sublayer6is exposed, so that water and oxygen in the process can permeate into the organic sublayer6and remain inside the array layer3. However, in the embodiment of the present disclosure, the metal film layer is provided above the integral combined film layer11, and after the organic sublayer6is formed, the inorganic layer7is formed first, and then the metal film layer is formed, so that when the metal film layer is formed, the surface of the organic sublayer6is covered by the inorganic layer7, which can reduce water and oxygen permeating into the organic sublayer6.

In a feasible implementation, as shown inFIG.3,FIG.3is still another schematic structural diagram of a display panel according to an embodiment of the present disclosure, the array layer3includes at least one combined film layer11, the combined film layer11includes an organic sublayer6and an inorganic layer7adjacent to each other, and the inorganic layer7in the combined film layer11is located on a side of the organic sublayer6away from the substrate2.

In at least part of the combined film layer11, the organic sublayer6includes an aperture50, and the inorganic layer7is further located at least on a side wall of the aperture50, so as to cut off a transmission path of water and oxygen in the horizontal direction y (parallel to a plane where the substrate2is located). Exemplarily, if part of the water and oxygen permeates into the organic sublayer6through the side surface of the display panel, the water and oxygen will be blocked by the inorganic layer7at the side wall of the aperture50when the water and oxygen in organic sublayer6laterally transmitted to the aperture50, and cannot be further transmitted toward the middle display area.

In a feasible implementation, as shown inFIG.4,FIG.4is still another schematic structural diagram of a display panel according to an embodiment of the present disclosure, the aperture50includes a connection via hole16, and the inorganic layer7is further located at a hole wall of the connection via hole16.

The connection via hole16may be a via hole connected to any metal structure in the display panel, for example, a via connected between the transistor9and the auxiliary connection electrode14in the display area, a via connected between the bonding electrode13and the auxiliary connection electrode14, or a via hole connected between the peripheral circuit and the signal line in the frame area.

In this structure, the connection via hole16and the aperture50which play a connection role in the array layer3are reused, on one hand, the punching process can be saved, the process is simplified, and on the other hand, the additional space occupied by the aperture50can be avoided, which is particularly suitable for panel structures with high pixel density and complex wiring in the array layer3. Moreover, the connection via hole16in the array layer3is generally a high-risk position where water and oxygen are easily invaded across layers, the connection via hole16and the aperture50are reused, so that the inorganic layer7can be specifically set to cover the hole wall of the connection via hole16, and the connection via hole16is subjected to water and oxygen protection, thereby reducing the risk of water and oxygen cross-layer invasion.

Further, referring toFIG.4again, the array layer3includes a transistor9, the connection via16includes a first connection via hole17that expose at least part of the transistor9, and the inorganic layer7is further located on a wall of the first connection via hole17. At this time, the inorganic layer7at the hole wall of the first connection via hole17not only can block the lateral transmission of water and oxygen in the organic sublayer6, but also can block the water and oxygen cross-layer invading into the transistor9along the first connection via hole17, thereby enhancing the water and oxygen protection ability of the transistor9and avoiding the functional failure of the transistor device.

Further,FIG.5is another schematic structural diagram of a display panel according to an embodiment of the present disclosure, the array layer3includes a transistor9, the connection via hole16does not overlap with the transistor9in a direction perpendicular to a plane where the substrate2is located. Exemplarily, the auxiliary connection portion14may be electrically connected to the connection wire18through the first connection via hole17, and the connection wire18is further connected to the transistor9, so that the first connection via hole17does not overlap with the transistor9.

In this way, the distance between the connection via hole16and the transistor9can be increased, and even if part of the water and oxygen continue to penetrate inward through the connection via hole16, the probability that the water and oxygen permeate into the transistor9can be reduced.

In addition, it should also be noted that when the inorganic layer7is further located on the hole wall of the connection via16and the first metal layer12is located on the side of the combination film layer11away from the substrate2, the stress of the inorganic layer7may also be relieved by using the first metal layer12. Taking the auxiliary connection portion14inFIG.4as an example, the auxiliary connection portion14is located on a side of the second combined film layer20away from the substrate2, that is, between the organic sublayer6in the first combined film layer19and the inorganic layer7in the second combined film layer20, and when the inorganic layer7in the first combined film layer19extends into the connection via hole16between the bonding electrode13and the auxiliary connection portion14, the inorganic layer7contacts the auxiliary connection portion14at the bottom of the connection via16, so that the auxiliary connection portion14relieves the stress of the inorganic layer7.

In a feasible implementation, as shown inFIG.6,FIG.6is a schematic structural diagram of a groove21according to an embodiment of the present disclosure, the aperture50may also include a groove21, and the inorganic layer7is recessed in the groove21.

In this structure, the organic sublayer6is discontinuously provided at the groove21, and the inorganic layer7is recessed in the groove21to block the transmission of water and oxygen in the horizontal direction y, for example, to block the transmission of the part of water and oxygen permeated into the organic sublayer6from the side surface of the display panel.

Further, referring toFIG.6again, the combined film layer11includes a first combined film layer19and a second combined film layer20, and the first combined film layer19is located on a side of the second combined film layer20away from the substrate2. The groove21includes a first groove22and a second groove23, the first groove21penetrates through the organic sublayer6in the first combined film layer19, and the second groove23is located in the organic sublayer6in the second combined film layer20. The first groove22overlaps with the second groove23in a direction perpendicular to the plane where the substrate2is located. That is, the inorganic layer7in the second combined film layer20is recessed in the second groove23, and the inorganic layer7in the first combined film layer19is recessed in the first groove22and the second groove23. In the second combined film layer20, the second groove23may penetrate through the organic sublayer6or may not penetrate through the organic sublayer6, the accompanying drawing of an embodiment of the present disclosure is schematically illustrated with the second groove23penetrating through the organic sublayer6.

With reference toFIG.6toFIG.9, the first groove22overlaps with the second groove23, and the inorganic layer7recessed in the first groove22is further recessed in the second groove23, so that the contact area between the two inorganic layers7can be increased, for example, the two inorganic layers7will increase the water and oxygen block ability in the vertical direction x and/or horizontal direction y where they meet at the bottom and sidewalls of the second trench23.

When the first groove22and the second groove23overlap, in a feasible implementation, as shown inFIG.7,FIG.7is another schematic structural diagram of a groove21according to an embodiment of the present disclosure, the second groove23includes a first side wall24and a second side wall25that are opposite to each other, and the first groove22at least covers the first side wall24in a direction perpendicular to a plane where the substrate2is located.

In this arrangement, the two inorganic layers7are at least in contact and stacked at the first side wall24of the second groove23, and the inorganic layer7at the first side wall24has a larger overall thickness, which can cut off the transmission of water and oxygen in the horizontal direction y more effectively.

Further, as shown inFIG.8,FIG.8is another schematic structural diagram of a groove21according to an embodiment of the present disclosure, and the first groove22further covers the second side wall25in a direction perpendicular to a plane where the substrate2is located.

That is, the first groove22covers the second groove23, at this time, the two inorganic layers7at least contact and stack at the first side wall22and the second side wall25, and even contact and stack at the upper surface of the organic sublayer6in the second combined film layer20, the contact area of the two inorganic layers7is larger, and the water and oxygen block ability in the horizontal direction y and the vertical direction x is better.

When the first groove22and the second groove23overlap, in another feasible implementation, in order to increase the contact area of the two inorganic layers7to a greater extent and optimize the block effect on water and oxygen, as shown inFIG.9, which is another schematic structural diagram of the groove21provided by the embodiment of the present disclosure, the first groove22overlaps with the at least two second grooves23in a direction perpendicular to the plane where the substrate2is located, that is, a larger groove width is designed for the first groove22.

In a feasible implementation, as shown inFIG.10, which is a top view of a display panel according to an embodiment of the present disclosure, the display panel includes a display area26and a frame area27, and a groove21is located in the frame area27.

Since the frame region27is not used for image display, the metal circuit is relatively simple, and by providing the above groove21in the frame region27, the design flexibility of the groove21can be increased, for example, the extending path of the groove21can be increased to further enhance the block effect on water and oxygen. Moreover, when the groove21is located in the frame region27, the groove21is closer to the cutting edge of the display panel, and when water and oxygen permeate into the organic sublayer6through the side surface of the display panel, the water and oxygen may be blocked by the inorganic layer7provided in the groove21to prevent the water and oxygen from further permeating into the display region26.

In a feasible implementation, referring toFIG.10again, the frame region27includes a peripheral circuit28, and the groove21is located on a side of the peripheral circuit28away from the display region26, so as to perform effective water and oxygen protection on a device in the peripheral circuit28, thereby preventing water and oxygen permeated through a side surface of the display panel from eroding a transistor device in the peripheral circuit28.

Further, referring toFIG.10again, the peripheral circuit28includes a shift register circuit29.

Compared with a peripheral circuit28such as an electrostatic protection circuit, the shift register circuit29needs to transmit a driving signal to the transistor9in the display area26, thereby controlling normal light emission of the light emitting diode4. On one hand, the working stability of the shift register circuit29has a more significant influence on display, and by providing the groove21on the outer side of the shift register circuit29, it can be ensured that the shift register circuit29is not eroded by water and oxygen, and the display reliability is improved to a greater extent; on the other hand, the shift register circuit29needs to be electrically connected to the transistor9in the display area26through wires such as a grid line and a light emitting control signal line, and after the wires are led out from the shift register circuit29, it needs to extend first in the frame area27on the side of the shift register circuit29close to the display area26, and then extend to the interior of the display area26to be electrically connected to the transistor9, so that the wiring on the side of the shift register circuit29close to the display area26is relatively complex, and by providing the groove21on the side of the shift register circuit29away from the display area26, it can also be avoided that the grid line and the light emitting control signal line are short-circuited with other metal structures at the groove21.

In a feasible implementation, as shown inFIG.11,FIG.11is another top view of the display panel according to an embodiment of the present disclosure, the frame region27includes a first frame region30, and at least two grooves21are arranged in the first frame region30along a direction from the first frame region30to the display region26, so as to cut off the transmission path of water and oxygen multiple times along the direction from the first frame region30to the display region26.

In a feasible implementation, referring toFIG.10andFIG.11again, in order to protect the display area26in all directions, at least part of the groove21surrounds the display area26in the frame area27. It should be noted that since the lower frame wiring is complex and the driving chip may need to be bound, the groove21may surround the display area26only on the upper frame and the left and right frames.

In a feasible implementation, referring toFIG.10andFIG.11again, at least part of the groove21extends in straight line, or, as shown inFIG.12,FIG.12is another top view of the display panel according to the embodiment of the present disclosure, and at least part of the groove21may also extend in a wavy line or a broken line to increase the extension length of the groove21.

It should be noted that the groove21extends in a straight line, a wavy line or a broken line, meaning that at least part of the orthographic projection of the groove21extends in a straight line, a wavy line or a broken line in the direction perpendicular to the plane where the substrate2is located. Taking extension in straight line as an example, in one structure, the groove21is located on one side of the display area26, and the entire groove21extends in straight line, or, in another structure, referring toFIG.10, the groove21may also surround the display area26, at this time, the groove21provided in the upper frame, the left frame and the right frame extend in a straight line, respectively.

In a feasible implementation, as shown inFIG.13,FIG.13is another schematic structural diagram of a display panel according to an embodiment of the present disclosure, inorganic layers7are respectively provided on two opposite sides of at least one organic sublayer6, so that the two inorganic layers7are used to cut off water and oxygen transmission paths on upper and lower sides of the organic sublayer6respectively, and the array layer3has better water and oxygen resistance.

Further, referring toFIG.13again, the inorganic layers7on opposite sides of the organic sublayer6are partially contacted. For example, the inorganic layer7on the side of the organic sublayer6away from the substrate2may be in contact with the inorganic layer7on the side of the organic sublayer6close to the substrate2through the aperture50(connecting the via hole16and/or the groove21) provided in the organic sublayer6, thereby realizing stacking of the two inorganic layers7at the contact position, and achieving a better water and oxygen block effect.

Taking the organic sublayer6located between the bonding electrode13and the transistor9as an example, when the inorganic layer7on the organic sublayer6extends into the connection via hole16between the bonding electrode13and the transistor9, the inorganic layer7under the organic sublayer6will be in contact with the bottom of the connection via hole16, so as to form a stack with the inorganic layer7under, so as to block water and oxygen to a greater extent at the connection via hole16.

Further, the array layer3further includes a metal layer, and two opposite sides of at least one metal layer are respectively provided with an inorganic layer7. Exemplarily, as shown inFIG.14,FIG.14is another schematic structural diagram of a display panel according to an embodiment of the present disclosure, two opposite sides of a metal layer where a first electrode s and a second electrode d of a transistor6are located are respectively provided with an inorganic layer7, at this time, the metal layer has a large contact area between the two inorganic layers7as well as between the two inorganic layers, which can be utilized both to relieve the stress of the inorganic layer7and to improve the water oxygen block effect by utilizing the stacked inorganic layers7.

In a feasible implementation, referring toFIG.2again, the array layer3includes at least two organic sublayers6and at least two inorganic layers7, and the at least two organic sublayers6and the at least two inorganic layers7are alternately arranged in sequence, so that the at least two inorganic layers7are used to cut off the transmission path of water and oxygen multiple times at different positions, thereby improving the water and oxygen resistance of the array layer3more obviously.

Further, referring toFIG.2again, a maximum distance between the substrate2and the inorganic layer7farthest therefrom is a first distance d1, and the first distance d1is greater than a maximum distance between any one of the organic sublayers6and the substrate2. That is, the inorganic layer7is still covered above the organic sublayer6farthest from the substrate2, and the inorganic layer7is blocked when the water and oxygen permeate into the array layer3, thereby reducing the probability of the water and oxygen permeating into the array layer3to a greater extent.

In a feasible embodiment, referring again toFIG.1, the film thickness of the inorganic layer7is d, 50 nm≤d≤500 nm, and the inorganic layer7has better water and oxygen block performance and avoids too much influence on the overall thickness of the module.

In a feasible implementation, as shown inFIG.15,FIG.15is another schematic structural diagram of a display panel according to an embodiment of the present disclosure, the inorganic layer7includes a first sub-layer31and a second sub-layer32that are stacked, and materials of the first sub-layer31and the second sub-layer32are different, for example, the first sub-layer31is made of silicon oxide material and the second sub-layer32is made of silicon nitride. When the inorganic layer7adopts a laminated design, at least two laminated layers are formed of different inorganic materials, which can reduce the film stress and improve the film stability of the inorganic layer7.

In addition, the film thicknesses of the first sub-layer31and the second sub-layer32may be the same or different, which is not limited in the embodiments of the present disclosure.

Based on the same inventive concept, an embodiment of the present disclosure further provides a display device, as shown inFIG.16,FIG.16is a schematic structural diagram of a display device according to an embodiment of the present disclosure, and the display device includes the above display panel100. The specific structure of the display panel100has been described in detail in the foregoing embodiments, and details are not described herein again. The display devices shown inFIG.16is merely illustrative, and the display devices may be any electronic devices with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic paper book, or a television.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present disclosure should be included within the scope of the present disclosure.

Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present disclosure, but not to limit the same; although the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that: The technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions in the embodiments of the present disclosure.