Display panel

Abstract

The display panel includes a display substrate, a polarizer and an ion adsorption structure. The polarizer is located on the display side of the display substrate and includes polarized particles. The ion adsorption structure is located between the display substrate and the polarizer and includes a first electrode configured to be applied with a voltage opposite to the electrical property of the polarized particles in operation. In the display panel, the first electrode generates an electric field after being powered on to adsorb the polarized particles overflowing from the polarizer to protect the elements of the display substrate.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically to a display panel. Background Technology

[0002] With the development of display technology, organic light-emitting display (OLED) panels are being used more and more widely due to their excellent performance. In order to eliminate the reflection of ambient light and improve the display effect, polarizers are set on the panel.

[0003] However, polarizing particles in the polarizer can spill into the interior of the panel and damage the conductive components, thus limiting the improvement of panel performance. Summary of the Invention

[0004] This disclosure provides a display panel including a display substrate, a polarizer, and an ion-adsorption structure. The polarizer is located on the display side of the display substrate and includes polarizing particles. The ion-adsorption structure is located between the display substrate and the polarizer and includes a first electrode configured to be applied a voltage with an electrical polarity opposite to that of the polarizing particles during operation.

[0005] In the above scheme, the electric field generated by the first electrode can adsorb the overflowing polarized particles, thereby preventing the polarized particles from migrating into the display substrate and protecting the various components of the display substrate.

[0006] In one specific embodiment of this disclosure, the display substrate is divided into a display area and a non-display area located on at least one side of the display area, and the non-display area includes a bonding area. The display substrate includes at least one first signal line and at least one second signal line, the first signal line and the second signal line extending from the bonding area to the display area, and the driving voltages of the first signal line and the second signal line are electrically opposite.

[0007] In the above scheme, the polarizing particles that overflow from the polarizer will first pass through the ion adsorption structure and be captured by the electric field generated by the ion adsorption structure, thereby preventing the polarizing particles from corroding the first signal line and the second signal line.

[0008] In one specific embodiment of this disclosure, the first signal line is a power signal line, and the second signal line is a common signal line.

[0009] In one specific embodiment of this disclosure, the ion adsorption structure further includes a second electrode located between the first electrode and the display substrate. The second electrode is configured to form an electric field with the first electrode when the ion adsorption structure is in operation.

[0010] In the above scheme, the first electrode and the second electrode can form a capacitor to avoid the electric field generated by the ion adsorption structure from affecting the function of the display panel components; in addition, the electric field distribution of the capacitor is more concentrated, which makes it easier to capture the overflowing polarized particles, thereby further reducing the risk of polarized particles intruding into the display substrate.

[0011] In one specific embodiment of this disclosure, the second electrode is configured to be grounded.

[0012] In the above scheme, the voltage of the grounded second electrode is stable. For the first signal line and the second signal line, the second electrode can shield the first electrode to prevent the voltage of the first electrode from causing voltage fluctuations in the first signal line and the second signal line.

[0013] In another specific embodiment of this disclosure, the second electrode is configured to be subjected to a voltage that is electrically opposite to that of the first electrode during operation.

[0014] In the above scheme, a higher intensity electric field can be generated between the first electrode and the second electrode to improve the capture effect of polarized particles.

[0015] In one specific embodiment of this disclosure, where the second electrode is configured to be subjected to a voltage opposite in electrical polarity to that of the first electrode during operation, the ion adsorption structure further includes a third electrode located between the second electrode and the display substrate, the third electrode being configured to be grounded.

[0016] In the above scheme, the third electrode can shield the first and second signal lines, preventing the voltage fluctuations of the first and second signal lines caused by the electric fields generated by the first and second electrodes.

[0017] In one specific embodiment of this disclosure, the display panel may further include an encapsulation layer that covers the display substrate.

[0018] In one specific embodiment of this disclosure, the ion adsorption structure is located between the encapsulation layer and the polarizer.

[0019] In the above scheme, the encapsulation layer can act as a spacer between the ion adsorption structure and the display substrate, increasing the spacing between the electrodes of the ion adsorption structure and the internal components of the display substrate, so as to reduce the adverse effects of the electric field generated by the ion adsorption structure on the function of each component in the display substrate.

[0020] In one specific embodiment of this disclosure, the first electrode is located on the side of the encapsulation layer away from the display substrate, and the second electrode is located inside the encapsulation layer, or between the encapsulation layer and the display substrate.

[0021] In the above scheme, the encapsulation layer can act as a dielectric layer between the first electrode and the second electrode, which helps to reduce the increased design thickness of the display panel caused by setting the ion adsorption structure.

[0022] In one specific embodiment of this disclosure, the display panel may further include a touch layer located in the display area and between the display substrate and the polarizer. The touch layer includes a first touch electrode layer and a second touch electrode layer sequentially stacked on the display substrate. The first electrode is in the same layer and made of the same material as the first touch electrode layer, and the second electrode is in the same layer and made of the same material as the second touch electrode layer.

[0023] In the above scheme, the ion adsorption structure can be prepared simultaneously with the preparation of the touch layer, so that the setting of the ion adsorption structure does not increase the preparation process steps of the display panel, which is conducive to controlling the preparation cost of the display panel.

[0024] In one specific embodiment of this disclosure, the first touch electrode layer includes a plurality of first touch electrodes arranged in parallel, and the second touch electrode layer includes a plurality of second touch electrodes arranged in parallel. The first touch electrodes and the second touch electrodes intersect to form a touch capacitor at the intersection.

[0025] In another specific embodiment of this disclosure, one of the first touch electrode layer and the second touch electrode layer is configured to include a plurality of first touch electrodes and a plurality of second touch electrodes arranged in parallel. One of the first touch electrode layer and the second touch electrode layer is configured to include a plurality of conductive bridges. The first touch electrodes and the second touch electrodes intersect to form a touch capacitor at the intersection. The first touch electrode is broken into a plurality of sub-electrodes at the position where it intersects with the second touch electrode. The plurality of sub-electrodes in each first touch electrode are connected by conductive bridges.

[0026] In one specific embodiment of this disclosure, the display substrate may include a display functional layer and a barrier dam. The display functional layer is located in the display area and includes a plurality of light-emitting devices, the barrier dam is located in the non-display area and surrounds the display area, and an encapsulation layer is located between the polarizer and the display functional layer, covering the display functional layer and the barrier dam. In the non-display area, a first signal line includes a first signal segment, a second signal line includes a second signal segment, the first signal segment and the second signal segment are located on both sides of the barrier dam, an ion adsorption structure is located between the encapsulation layer and the polarizer, and the orthographic projection of the portion of the barrier dam located between the first signal segment and the second signal segment on the surface of the display substrate is within the orthographic projection of the ion adsorption structure on the surface of the display substrate.

[0027] In the above scheme, the height of the ion adsorption structure is increased by using a barrier dam to reduce the influence of the electric field of the ion adsorption structure on the first signal line and the second signal line.

[0028] In one specific embodiment of this disclosure, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer sequentially stacked on a display substrate. The organic encapsulation layer covers the display functional layer, a barrier dam surrounds the organic encapsulation layer, and the first and second inorganic encapsulation layers cover the display functional layer and the barrier dam.

[0029] In one specific embodiment of this disclosure, the polarizing particles are iodine ions, and the first electrode is configured to be subjected to a positive voltage during operation. Attached Figure Description

[0030] Figure 1 The diagram shown is a planar structural schematic of a display panel according to an embodiment of this disclosure.

[0031] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the display panel.

[0032] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the display panel along M1-N1.

[0033] Figure 4 for Figure 1 The diagram shows a cross-sectional view of the display panel along M2-N2.

[0034] Figure 5 A cross-sectional view of a portion of another display panel provided in an embodiment of this disclosure.

[0035] Figure 6 A cross-sectional view of a portion of another display panel provided in an embodiment of this disclosure.

[0036] Figure 7 A cross-sectional view of a portion of another display panel provided in an embodiment of this disclosure. Detailed Implementation

[0037] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0038] A polarizer is needed on the light-emitting side of the display panel to eliminate ambient light reflection, thereby improving the display effect. The polarizer can include a quarter-wave plate and a polarizing plate. The polarizing plate can contain dichroic polarizing particles such as iodine ions.

[0039] In practical applications, polarizing particles such as iodine ions in the polarizer may leak out. These leaked polarizing particles can penetrate into the interior of the display panel and react with components such as signal lines, causing these components to be corroded and resulting in malfunction of the display panel.

[0040] The embodiments of this disclosure provide a display panel and a display device, which at least solve the aforementioned technical problems. The display panel includes a display substrate, a polarizer, and an ion-adsorption structure. The polarizer is located on the display side of the display substrate and includes polarizing particles. The ion-adsorption structure is located between the display substrate and the polarizer and includes a first electrode, which is configured to be applied a voltage with an electrical polarity opposite to that of the polarizing particles during operation. In this display panel, the first electrode can generate an electric field after being energized. If polarizing particles overflow from the edge of the polarizer, the polarizing particles tend to move towards the first electrode under the action of the electric field. This means that the first electrode can adsorb the overflowing polarizing particles, thereby preventing the polarizing particles from migrating into the display substrate. Thus, by providing the ion-adsorption structure, the various components within the display substrate can be protected.

[0041] The structure of a display panel according to at least one embodiment of the present disclosure will now be described with reference to the accompanying drawings. Furthermore, in these drawings, a spatial Cartesian coordinate system is established with the surface of the display substrate as a reference to more intuitively present the positional relationships of the various components in the display panel. In this spatial Cartesian coordinate system, the X-axis and Y-axis are parallel to the surface of the display substrate, and the Z-axis is perpendicular to the surface of the display substrate.

[0042] like Figures 1-4 As shown, the display substrate 100 includes a display area 11 and a non-display area 12 (equivalent to a border area) surrounding the display area 11. The non-display area 12 includes a bonding area 13. The polarizer 200 needs to be configured to cover the display area 11 of the display substrate 100, so that the edge of the polarizer 200 extends into the non-display area 12. Polarizing particles tend to escape from the edge of the polarizer (e.g., the S-region), and correspondingly, the escaped polarizing particles are distributed in the non-display area 12 of the display substrate 100. After the ion adsorption structure 300 is provided between the display substrate 100 and the polarizer 200, if a voltage with an electrical polarity opposite to that of the polarizing particles is applied to the first electrode 310 of the ion adsorption structure 300, the escaped polarizing particles will be captured by the electric field generated by the ion adsorption structure 300 before entering the interior of the display substrate 100.

[0043] It should be noted that, in the embodiments of this disclosure, "opposite charges" means that, when two objects have charges (either inherently possessing charges or acquiring charges due to the application of a voltage), one object has a positive charge while the other object has a positive charge. For example, when the polarizing particles are iodine ions (negative ions, equivalent to having a negative charge), the first electrode is configured to acquire a positive charge when a positive voltage is applied during operation.

[0044] It should be noted that the non-display area 12 (which may be called the bezel area) refers to the bezel portion designed during the manufacturing process of the display substrate. In the final commercially available product, at least a portion of the non-display area may be partially cut off or bent to the back of the display substrate so that it is not visually presented.

[0045] In at least one embodiment of this disclosure, such as Figures 1-4 As shown, the element protected by the ion adsorption structure 300 in the display substrate 100 can be a signal line. This signal line may include at least one first signal line 111 and at least one second signal line 112. The first signal line 111 and the second signal line 112 extend from the bonding area 13 to the display area 11, and the driving voltages of the first signal line 111 and the second signal line 112 are electrically opposite. Thus, after being energized, the first signal line 111 and the second signal line 112 form a parasitic capacitance. Before being adsorbed by the electric field of the parasitic capacitance, polarizing particles escaping from the polarizer 200 pass through the ion adsorption structure 300 and are captured by the electric field generated by the ion adsorption structure 300, thereby preventing the polarizing particles from corroding the first signal line 111 and the second signal line 112.

[0046] In embodiments of this disclosure, when the first signal line and the second signal line are electrically opposite and arranged adjacently or close to each other, the types of the first signal line and the second signal line are not limited. For example, the first signal line can be a power signal line, and the second signal line can be a common signal line. For example, for a driving circuit of a display panel (such as the pixel driving circuit described below), the power signal line (generally identified as ELVDD in the art) and the common signal line (generally identified as ELVSS in the art) can provide operating voltages. The power signal line generally provides a positive power supply voltage, and the common signal line generally provides a negative power supply voltage. Because the cathode of the light-emitting device driven by the driving circuit is generally a common electrode, and this common electrode can be connected to a common electrode line, the negative power supply voltage can also be called a common voltage. It should be noted that the negative power supply voltage is relative to the positive power supply voltage, and it can also be regarded as a common ground voltage.

[0047] In at least one embodiment of this disclosure, such as Figures 1-3 As shown, near the edge of the polarizer 200, the ion adsorption structure 300 can be configured to block the gap between the first signal line 111 and the second signal line 112. That is, the orthographic projection of the gap between the portion of the first signal line 111 and the second signal line 112 located between the bonding area 13 and the display area 11 on the surface of the display substrate 100 is located within the orthographic projection of the ion adsorption structure 300 (or the distribution area of ​​the electric field generated by it) on the surface of the display substrate 100. In this way, the adsorption effect of the ion adsorption structure 300 on the overflowing polarized particles can be improved.

[0048] In the embodiments of this disclosure, there are no limitations on the specific manner in which the ion adsorption structure generates the electric field or the distribution form of the electric field; these can be selected according to actual needs. For example, in some embodiments, the ion adsorption structure may be configured to include only the following: Figure 3 The electrode shown is the first electrode 310. When energized, the first electrode 310 can generate an electrostatic field (without boundaries). The closer the emitted polarized particles are to the first electrode 310, the greater the adsorption force (electric field force) they experience. For example, in some embodiments, the ion adsorption structure can be configured to include multiple electrodes to control the distribution of the electric field, for example, to confine the electric field between the multiple electrodes, thereby reducing the influence of the electric field on the driving signals of other components, such as the first signal line and the second signal line.

[0049] The structure of the display panel will be further explained below, taking into account the case where the ion adsorption structure includes multiple electrodes.

[0050] In at least one embodiment of this disclosure, such as Figure 4 and Figure 5 As shown, the ion adsorption structure 300 includes a first electrode 310 and a second electrode 320, with the second electrode 320 located between the first electrode 310 and the display substrate. When the ion adsorption structure is in operation, the voltages of the first electrode 310 and the second electrode 320 are different to form a capacitor, i.e., an electric field is formed between the first electrode 310 and the second electrode 320. Thus, the first electrode 310 and the second electrode 320 can form a capacitor to limit the electric field of the ion adsorption structure to be mainly concentrated between the first electrode 310 and the second electrode 320, thereby preventing the electric field generated by the ion adsorption structure from affecting the function of the display panel components (e.g., the driving signals of the first signal line 111 and the second signal line 112). Furthermore, the electric field distribution of the capacitor formed by the first electrode 310 and the second electrode 320 is more concentrated, making it easier to capture overflowing polarized particles, further reducing the risk of polarized particles intruding into the display substrate.

[0051] In some embodiments of this disclosure, the second electrode 320 may be grounded. Thus, the voltage of the grounded second electrode 320 is stable, and for the first signal line 111 and the second signal line 112, the second electrode 320 can shield the first electrode 310, preventing voltage fluctuations in the first signal line 111 and the second signal line 112 caused by the voltage of the first electrode 310.

[0052] In other embodiments of this disclosure, the second electrode 320 may be configured to be subjected to a voltage of opposite polarity to that of the first electrode 310 during operation. For example, the first electrode 310 may be connected to a positive voltage as a positive terminal, and the second electrode 320 may be connected to a negative voltage as a negative terminal. In this way, a higher intensity electric field can be generated between the first electrode 310 and the second electrode 320 compared to the second electrode being grounded, thereby improving the capture effect on polarized particles.

[0053] In at least one embodiment of this disclosure, the ion adsorption structure may be configured to include three electrodes, wherein two electrodes are used to generate an electric field to adsorb polarized particles, and the other electrode is used to ground to shield the electric field. Specifically, as Figure 7 As shown, the ion adsorption structure includes a first electrode 310, a second electrode 320, and a third electrode 330. The second electrode 320 is located between the first electrode 310 and the display substrate. The second electrode 320 is configured to be subjected to a voltage with an electrical polarity opposite to that of the first electrode 310 during operation. The third electrode 330 is located between the second electrode 320 and the display substrate, and is grounded. Thus, for the first signal line 111 and the second signal line 112, the third electrode 330 can shield the first electrode 310 and the second electrode 320, preventing voltage fluctuations in the first signal line 111 and the second signal line 112 caused by the electric fields generated by the first electrode 310 and the second electrode 320.

[0054] In the embodiments of this disclosure, the electrodes included in the ion adsorption structure may be disposed in the same layer as some conductive elements in the display panel, so as to reduce the number of steps added to the manufacturing process of the display panel due to the ion adsorption structure.

[0055] Before introducing the ion adsorption structure and the positional relationship of other conductive components in the display panel, we will first introduce the basic structure of the display panel, especially the display substrate it includes.

[0056] See again Figures 1-4 The display substrate includes a substrate 110 and a display functional layer 120 located on the substrate 110. The display functional layer 120 includes an array of light-emitting devices, which constitute the main light-emitting structure of sub-pixels (also known as sub-pixels). The substrate 110 can be an array substrate, which includes a driving circuit layer located in the display area 11. The driving circuit layer includes pixel driving circuits to drive the light-emitting devices to emit light. The driving circuit may include pixel driving circuits, which are connected to the corresponding light-emitting devices to control the light-emitting state of the light-emitting devices. The pixel driving circuit may include multiple transistors (TFTs), capacitors, etc., and may be formed in various forms such as 2T1C (i.e., 2 transistors (TFTs) and 1 capacitor (C)), 3T1C, or 7T1C.

[0057] One end of the first signal line 111 and the second signal line 112 can be connected to the bonding terminal (pad, also known as a Pad) in the bonding area 13, and the other end can be connected to the pixel driving circuit. The first signal line 111 and the second signal line 112 can be set separately, or they can be fabricated simultaneously during the fabrication of TFT electrodes (such as gate electrodes, source and drain electrodes, etc.), capacitors, etc.

[0058] In one implementation of a display panel fabrication process, the electrode of the ion adsorption structure, such as the first electrode, can be fabricated in the same layer and with the same material as the anode or cathode of the light-emitting device. That is, the anode or cathode is fabricated simultaneously during the anode or cathode fabrication process. In this way, the film layer containing the first electrode will be located above the film layer containing the first signal line 111 and the second signal line 112, so as to be closer to the polarizer.

[0059] In another method of manufacturing a display panel, such as Figures 1-4 As shown, the display substrate 100 may further include an encapsulation layer 140 to encapsulate the light-emitting devices of the display functional layer 120. The electrode of the ion adsorption structure 300, such as the first electrode 310, may be disposed on the encapsulation layer 140, that is, the first electrode 310 of the ion adsorption structure 300 may be located between the encapsulation layer 140 and the polarizer 200.

[0060] For example, if the ion adsorption structure also includes a second electrode, the entire ion adsorption structure can be located between the encapsulation layer and the polarizer. In this way, the encapsulation layer can act as a spacer between the ion adsorption structure and the display substrate, increasing the spacing between the electrodes of the ion adsorption structure and the internal components of the display substrate, thereby reducing the adverse effects of the electric field generated by the ion adsorption structure on the function of each component in the display substrate.

[0061] For example, if the ion adsorption structure also includes a second electrode, the second electrode of the ion adsorption structure can be located inside the encapsulation layer or between the encapsulation layer and the display substrate (i.e., below the encapsulation layer). In this way, the encapsulation layer can act as a dielectric layer between the first electrode and the second electrode, which is beneficial to reduce the increased design thickness of the display panel caused by the ion adsorption structure.

[0062] It should be noted that the encapsulation layer 140 may include a first inorganic encapsulation layer 141, an organic encapsulation layer 142, and a second inorganic encapsulation layer 143 sequentially stacked on the display functional layer 120. The first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143, due to their inclusion of inorganic materials, have high density, thus effectively blocking water, oxygen, or other particles. The organic encapsulation layer 142 has a significant thickness to planarize the surface of the display substrate, and materials such as desiccants may be added to the organic encapsulation layer 142 to absorb intruding water and oxygen. The organic encapsulation layer 142 is mainly concentrated in the display area 11. The first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143 cover the display area 11 and extend into the non-display area 12; that is, the portions of the first signal line 111 and the second signal line 112 located at the edge of the polarizer 200 are also covered by the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143.

[0063] For example, such as Figure 5 As shown, when the second electrode 320 of the ion adsorption structure 300 is disposed on the encapsulation layer 140, it will be spaced apart from the first signal line 111 and the second signal line 112, and the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143 with high density can still block the polarized particles adsorbed by the ion adsorption structure 300.

[0064] For example, such as Figure 6 As shown, the second electrode 320 of the ion adsorption structure 300 is disposed between the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143 of the encapsulation layer 140. That is, the second electrode 320 is located inside the encapsulation layer 140, thus the second inorganic encapsulation layer 143 acts as a dielectric layer (for forming a capacitor) between the first electrode 310 and the second electrode 320. Correspondingly, if the second electrode 320 is disposed below the first inorganic encapsulation layer 141, then both the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143 can act as dielectric layers between the first electrode 310 and the second electrode 320.

[0065] In another method of manufacturing a display panel, such as Figures 1-4 As shown, the display panel may further include a touch layer 150 to provide touch functionality. The touch layer 150 may be disposed in the display area and located between the display substrate 100 and the polarizer 200. The touch layer 150 includes a first touch electrode layer 151 and a second touch electrode layer 152 sequentially stacked on the display substrate 100, with the first touch electrode layer 151 and the second touch electrode layer 152 separated by a first insulating layer 153.

[0066] In such Figure 3 and Figure 4In the case where the ion adsorption structure 300 shown only includes the first electrode 310, the first electrode 310 can also be selected to be made of the same layer and the same material as one of the first touch electrode layer 151 and the second touch electrode layer 152.

[0067] In such Figure 5 When the ion adsorption structure 300 shown includes a first electrode 310 and a second electrode 320, the first electrode 310 and the second electrode 320 can be selected to be made of the same layer and the same material as the first touch electrode layer and the second touch electrode layer. For example, the first electrode is made of the same layer and the same material as the first touch electrode layer, and the second electrode is made of the same layer and the same material as the second touch electrode layer.

[0068] In the two scenarios described above, the ion adsorption structure can be fabricated simultaneously with the touch layer, ensuring that the ion adsorption structure does not increase the fabrication process steps of the display panel, which helps control the fabrication cost of the display panel.

[0069] The first touch electrode layer 151 and the second touch electrode layer 152 in the touch layer 150 need to be spaced by the first insulating layer 153 in order to form a touch capacitor. Therefore, when the first electrode 310 and the second electrode 320 are set to be in the same layer as the first touch electrode layer 151 and the second touch electrode layer 152 respectively, a capacitor can also be formed between the first electrode 310 and the second electrode 320.

[0070] The following describes several design structures for forming touch capacitors using the first and second touch electrode layers to illustrate the possibility of fabricating touch layers and ion adsorption structures in the same layer.

[0071] For example, in some embodiments, the first touch electrode layer includes a plurality of first touch electrodes arranged in parallel, and the second touch electrode layer includes a plurality of second touch electrodes arranged in parallel, wherein the first touch electrodes and the second touch electrodes intersect to form a touch capacitor at the intersection.

[0072] For example, in some other embodiments, one of the first touch electrode layer and the second touch electrode layer is configured to include multiple first touch electrodes and multiple second touch electrodes arranged in parallel. One of the first touch electrode layer and the second touch electrode layer is configured to include multiple conductive bridges. The first touch electrodes and the second touch electrodes intersect to form a touch capacitor at the intersection. The first touch electrode breaks into multiple sub-electrodes at the intersection with the second touch electrode, and the multiple sub-electrodes in each first touch electrode are connected by conductive bridges. A first insulating layer separates the conductive bridges and the second touch electrodes, and a through-hole may be provided in the first insulating layer, through which the conductive bridges can connect to the first touch electrodes.

[0073] In some preparation processes, such as Figure 3 and Figure 4As shown, before fabricating the touch layer 150 on the display substrate, a second insulating layer 154 (which can be called a buffer layer) is fabricated on the encapsulation layer 140 of the display substrate to prevent the fabrication process of the touch layer 150 from damaging the encapsulation layer 140. This second insulating layer 154 can be a highly dense inorganic layer to further block polarized particles captured by the ion adsorption structure from penetrating into the display substrate.

[0074] In embodiments of this disclosure, the display substrate may further include a barrier dam. For example... Figures 1-4 As shown, the barrier dam 130 is located in the non-display area 12 and surrounds the display area 11. The encapsulation layer 140 is located between the polarizer 200 and the display functional layer 120, and covers the display functional layer 120 and the barrier dam 130. The organic encapsulation layer 142 of the encapsulation layer 140 and some film layers in the light-emitting device may be fabricated using inkjet printing. The barrier dam 130 can limit the inkjet printing ink from overflowing. Furthermore, the barrier dam 130 can increase the contact area between the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143, thereby reducing the risk of external water, oxygen, etc., intruding into the display substrate along the interface between the first inorganic encapsulation layer 141 and the second inorganic encapsulation layer 143.

[0075] In embodiments of this disclosure, in the non-display area 12, such as Figures 1-4 As shown, the first signal line 111 includes a first signal segment ( Figure 3 The portion shown in the middle), the second signal line 112 includes the second signal segment ( Figure 3 The first signal segment and the second signal segment are located on both sides of the barrier dam 130, while the ion adsorption structure 300 is located between the encapsulation layer 140 and the polarizer 200. The electrodes of the ion adsorption structure 300 used to generate the electric field are located on the barrier dam 130. That is, the orthographic projection of the portion of the barrier dam 130 located between the first signal segment and the second signal segment onto the surface of the display substrate is within the orthographic projection of the ion adsorption structure 300 onto the surface of the display substrate 100. Thus, the ion adsorption structure 300 covers the barrier dam 130, which is equivalent to increasing the installation height of the ion adsorption structure 300 through the barrier dam 130, thereby increasing the spacing between the ion adsorption structure 300 and the first signal line 111 and the second signal line 112, and reducing the influence of the electric field of the ion adsorption structure 300 on the first signal line 111 and the second signal line 112.

[0076] It should be noted that, in the embodiments of this disclosure, such as Figure 3As shown, multiple blocking dams can be configured, arranged sequentially from the inside out around the display area to further reduce the risk of ink spillage and increase the contact area between the first and second inorganic encapsulation layers. In this design, the blocking dam furthest from the display area is closer to the edge of the polarizer. Thus, the ion adsorption structure can be configured to cover the blocking dam furthest from the display area to ensure effective capture of spilled polarized particles.

[0077] For example, the display panel provided in the embodiments of this disclosure can be any product or component with display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, or navigator.

[0078] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications or equivalent substitutions made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display panel, characterized in that, include: The display substrate is divided into a display area and a non-display area located on at least one side of the display area. The display substrate includes at least one first signal line and at least one second signal line. In the non-display area, the first signal line includes a first signal segment and the second signal line includes a second signal segment. A polarizer, located on the display side of the display substrate and comprising polarizing particles; and An ion adsorption structure is located between the display substrate and the polarizer, and includes a first electrode, wherein the first electrode is configured to be subjected to a voltage opposite in electrical polarity to the polarizing particles during operation, and the electric field generated by the ion adsorption structure is used to capture polarizing particles that overflow from the polarizer. An encapsulation layer covers the display substrate, and the ion adsorption structure is located between the encapsulation layer and the polarizer; A blocking dam is located in the non-display area and surrounds the display area. The encapsulation layer covers the blocking dam. The first signal segment and the second signal segment are located on both sides of the blocking dam. The portion of the blocking dam located between the first signal segment and the second signal segment has its orthographic projection on the surface of the display substrate within the orthographic projection of the ion adsorption structure on the surface of the display substrate, thereby increasing the installation height of the ion adsorption structure and increasing the spacing between the ion adsorption structure and the first and second signal segments.

2. The display panel according to claim 1, characterized in that, The non-display area includes a bonding area, and The first signal line and the second signal line extend from the bonding area to the display area, and the driving voltages of the first signal line and the second signal line are electrically opposite.

3. The display panel according to claim 2, characterized in that, The first signal line is a power signal line, and the second signal line is a common signal line.

4. The display panel according to claim 2, characterized in that, The ion adsorption structure further includes a second electrode located between the first electrode and the display substrate, and The second electrode is configured to form an electric field with the first electrode when the ion adsorption structure is in operation.

5. The display panel according to claim 4, characterized in that, The second electrode is configured to be grounded.

6. The display panel according to claim 4, characterized in that, The second electrode is configured to be subjected to a voltage that is electrically opposite to that of the first electrode during operation.

7. The display panel according to claim 6, characterized in that, The ion adsorption structure further includes a third electrode located between the second electrode and the display substrate, the third electrode being configured to be grounded.

8. The display panel according to any one of claims 4 to 7, characterized in that, Also includes: The first electrode is located on the side of the encapsulation layer away from the display substrate, and the second electrode is located between the encapsulation layer and the display substrate.

9. The display panel according to claim 8, characterized in that, Also includes: A touch layer is located in the display area and between the display substrate and the polarizer; The touch layer includes a first touch electrode layer and a second touch electrode layer stacked sequentially on the display substrate. The first electrode is in the same layer and made of the same material as the first touch electrode layer, and the second electrode is in the same layer and made of the same material as the second touch electrode layer.

10. The display panel according to claim 9, characterized in that, The first touch electrode layer includes multiple first touch electrodes arranged in parallel, and the second touch electrode layer includes multiple second touch electrodes arranged in parallel. The first touch electrodes and the second touch electrodes intersect to form a touch capacitor at the intersection; or One of the first touch electrode layer and the second touch electrode layer is configured to include multiple first touch electrodes and multiple second touch electrodes arranged in parallel. One of the first touch electrode layer and the second touch electrode layer is configured to include multiple conductive bridges. The first touch electrodes and the second touch electrodes intersect to form a touch capacitor at the intersection. The first touch electrode is broken into multiple sub-electrodes at the position where it intersects with the second touch electrode. The multiple sub-electrodes in each first touch electrode are connected through the conductive bridges.

11. The display panel according to claim 9, characterized in that, The display substrate includes: The display functional layer is located in the display area and includes multiple light-emitting devices; the encapsulation layer is located between the polarizer and the display functional layer and covers the display functional layer.

12. The display panel according to claim 11, characterized in that, The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer sequentially stacked on the display substrate, and The organic encapsulation layer covers the display functional layer, the barrier dam surrounds the organic encapsulation layer, and the first inorganic encapsulation layer and the second inorganic encapsulation layer cover the display functional layer and the barrier dam.

13. The display panel according to any one of claims 1 to 7, characterized in that, The polarizing particles are iodine ions, and the first electrode is configured to be subjected to a positive voltage during operation.

Images