Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel has a display area and a non-display area arranged at the periphery of the display area; the display panel comprises: an array substrate; a counter substrate arranged on one side of the array substrate; and a liquid crystal layer arranged between the array substrate and the counter substrate; wherein the non-display area of the display panel is provided with an ion dispersion structure, and the ion dispersion structure comprises: an ion sensing element for sensing the concentration of charged ions in the liquid crystal layer; a charge output element which is arranged in a spaced manner with the ion sensing element and is used for receiving a charge output by a control circuit, the charge having the same polarity as the charged ions in the liquid crystal layer; and a porous ion adsorption carrier which is arranged in a spaced manner with the ion sensing element and the charge output element and is used for adsorbing the charged ions in the liquid crystal layer. Through the above arrangement, the charged ions in the liquid crystal layer can be eliminated, and the problem that the charged ions in the liquid crystal layer of the display panel in the related art cause display residual image, the response speed of the display panel and the display stability to decrease can be solved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] LCD (Liquid Crystal Display) technology is widely used in terminal products such as smartphones, televisions, and monitors due to its advantages such as high durability, high resolution, low power consumption, and wide viewing angle. As the core component of the LCD panel, the orientation stability of the liquid crystal molecules inside the liquid crystal cell directly affects the display effect.

[0003] However, in the production processes of liquid crystal material synthesis, substrate processing, and liquid crystal injection, charged impurities such as metal ions and organic salt ions are inevitably introduced. Simultaneously, liquid crystal molecules may dissociate under the influence of an electric field, generating ionic charges. The presence of these charged ions can cause a series of display problems: on the one hand, charged ions migrate and accumulate on the electrode surface under the influence of an electric field, forming a fixed charge layer, leading to disordered liquid crystal molecule orientation and display defects such as image retention and ghosting; on the other hand, charged ions alter the electric field distribution within the liquid crystal cell, causing driving voltage drift, reducing the response speed and display stability of the liquid crystal panel, and in severe cases, shortening the lifespan of the display panel. This is especially true for fast-response liquid crystal materials, whose tendency to adsorb charged ions and cause ion aggregation makes them more prone to display abnormalities. Summary of the Invention

[0004] This application provides a display panel and display device to solve the problems of image retention caused by charged ions in the liquid crystal layer of display panels in related technologies, as well as the decrease in display panel response speed and display stability.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a display panel having a display area and a non-display area disposed around the periphery of the display area; comprising: Array substrate; The substrate is disposed on one side of the array substrate; A liquid crystal layer is disposed between the array substrate and the opposing substrate; The non-display area of ​​the display panel is provided with an ion dispersing structure, the ion dispersing structure comprising: An ion sensing element is used to sense the concentration of charged ions within the liquid crystal layer; A charge output element, spaced apart from the ion sensing element, is used to receive a charge of the same polarity as the charged ions in the liquid crystal layer output by the control circuit. A porous ion adsorption carrier is disposed at intervals from both the ion sensing element and the charge output element, and is used to adsorb charged ions in the liquid crystal layer.

[0006] In some embodiments, the ion dispersing structure is located at a corner of the display panel; The ion dispersing structure is disposed on the surface of the array substrate facing the opposing substrate; and / or, the ion dispersing structure is disposed on the surface of the opposing substrate facing the array substrate.

[0007] In some embodiments, the ion sensing element includes a first indium tin oxide thin film; The charge output element includes a second indium tin oxide thin film.

[0008] In some embodiments, the ion dispersing structure is provided on the surface of the array substrate facing the opposing substrate; The array substrate has a first transparent conductive layer on its surface facing the opposing substrate; the first transparent conductive layer, the first indium tin oxide film, and the second indium tin oxide film are spaced apart from each other and are formed by the same indium tin oxide film layer.

[0009] In some embodiments, the porous ion adsorption carrier is made of graphene-doped porous silica material; wherein the doping amount of graphene is 3wt%-8wt%.

[0010] In some embodiments, the porous ion adsorption carrier has multiple micropores with a pore size of 50 nm to 200 nm. And / or, the specific surface area of ​​the porous ion adsorption carrier is 500 m². 2 / g-700m 2 / g.

[0011] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a display device, comprising: Any of the display panels described above; Control circuit, including: An ion sensing unit is electrically connected to the ion sensing element; it is used to detect changes in the electrical parameters of the ion sensing element, determine and output the concentration of charged ions in the liquid crystal layer; A charge emission unit is electrically connected to the charge output element; The control unit is electrically connected to both the ion sensing unit and the charge emission unit. The control unit is used to: output an ion dispersal signal to the charge emission unit according to the concentration of the charged ions output by the ion sensing unit, so as to control the charge emission unit to emit a charge with the same polarity as the charged ions to the charge output element, so as to disperse the charged ions to the porous ion adsorption carrier.

[0012] In some embodiments, the control unit is used for: In response to the concentration of charged ions output by the ion sensing unit being greater than or equal to a first threshold, the ion dispersal signal is output to the charge emission unit; wherein, the first threshold is 9 × 10⁻⁶. 5 pcs / cm 3 Up to 1.1×10 6 pcs / cm 3 .

[0013] In some embodiments, the control unit is used for: In response to the concentration of charged ions output by the ion sensing unit being greater than or equal to the first threshold, the ion dispersal signal is output to the charge emission unit, controlling the charge emission unit to output a voltage of 5V-10V to the charge output element for a duration of 10ms-20ms.

[0014] In some embodiments, the ion sensing unit stores a preset relationship curve between the concentration of charged ions and electrical parameters, including resistance or impedance. The ion sensing unit is used to detect changes in the electrical parameters of the ion sensing element, and based on the preset relationship curve and the detected changes in the electrical parameters of the ion sensing element, determines and outputs the concentration of charged ions in the liquid crystal layer to the control unit.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, this application discloses a display panel and a display device. The display panel has a display area and a non-display area surrounding the display area; the display panel includes: an array substrate; a counter substrate disposed on one side of the array substrate; and a liquid crystal layer disposed between the array substrate and the counter substrate; wherein, the non-display area of ​​the display panel is provided with an ion dispersing structure, the ion dispersing structure including: an ion sensing element for sensing the concentration of charged ions in the liquid crystal layer; a charge output element spaced apart from the ion sensing element for receiving a charge of the same polarity as the charged ions in the liquid crystal layer output by a control circuit; and a porous ion adsorption carrier spaced apart from both the ion sensing element and the charge output element for adsorbing charged ions in the liquid crystal layer. By setting the aforementioned ion-dispersing structure in the non-display area of ​​the display panel, the ion sensing element can sense the concentration of charged ions in the liquid crystal layer, and the charge output element can receive charges of the same polarity as the charged ions in the liquid crystal layer output by the external control circuit. According to the principle of like charges repelling each other, the charge received by the charge output element and the charged ions in the liquid crystal layer repel each other, thus dispersing the charged ions in the liquid crystal layer to the porous ion adsorption carrier. The ions are adsorbed and fixed by the porous ion adsorption carrier, effectively eliminating the charged ions in the liquid crystal layer. This effectively solves the problems of display ghosting and decreased display response speed and display stability caused by charged ions in the liquid crystal layer of related technologies, solves the problem of long-term residence of charged ions in the liquid crystal layer, eliminates the interference of charged ions on the orientation of liquid crystal molecules, avoids driving voltage drift, improves the response speed of the display panel, significantly enhances display stability, effectively improves display effect, improves the performance of the display panel, and extends the service life of the display panel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the structure of an embodiment of the display panel provided in the first embodiment of this application; Figure 2 yes Figure 1 A top view schematic diagram of a partial structure of the non-display area of ​​a provided embodiment of a display panel; Figure 3 This is a simplified structural diagram of an embodiment of the display device provided in the second embodiment of this application; Figure 4 This is a schematic diagram of another embodiment of the display device provided in the second embodiment of this application.

[0017] Icon labels: 100. Display panel; 1. Array substrate; 11. First transparent conductive layer; 2. Counter substrate; 21. Second transparent conductive layer; 3. Liquid crystal layer; 4. Frame adhesive; 5. Ion dispersive structure; 51. Ion sensing element; 52. Charge output element; 53. Porous ion adsorption carrier; 200. Control circuit; 201. Ion sensing unit; 202. Charge emission unit; 203. Control unit; 300. Backlight module; 400. Display device; X. Display area; F. Non-display area. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a display panel according to the first embodiment of this application. Figure 2 yes Figure 1A top view schematic diagram of a partial structure of the non-display area of ​​one embodiment of the provided display panel.

[0022] See Figure 1 and Figure 2 The first embodiment of this application provides a display panel 100, which includes an array substrate 1 and a counter substrate 2 disposed opposite to each other. The counter substrate 2 is spaced apart on one side of the array substrate 1, and a liquid crystal layer 3 is disposed between the array substrate 1 and the counter substrate 2. Specifically, in some embodiments, the display panel 100 further includes a frame adhesive 4, which is connected between the array substrate 1 and the counter substrate 2 and surrounds the liquid crystal layer 3.

[0023] The display panel 100 has a display area X and a non-display area F disposed around the display area X. In some embodiments, the non-display area F is disposed around the display area X. The non-display area F of the display panel 100 is provided with an ion dispersing structure 5, which is used to disperse and eliminate charged ions in the liquid crystal layer 3.

[0024] In some embodiments, the ion dispersing structure 5 includes an ion sensing element 51, a charge output element 52, and a porous ion adsorption carrier 53.

[0025] The ion sensing element 51 is used to sense the concentration of charged ions within the liquid crystal layer 3. In some embodiments, the ion sensing element 51 is configured to generate corresponding changes in electrical parameters based on changes in the concentration of charged ions. For example, the greater the concentration of charged ions within the liquid crystal layer 3, the greater the change in resistance or impedance of the ion sensing element 51, so as to determine the concentration of charged ions within the liquid crystal layer 3 based on the changes in the electrical parameters of the ion sensing element 51.

[0026] The charge output element 52 and the ion sensing element 51 are arranged at a distance and are not electrically connected. The charge output element 52 is used to receive signals from the control circuit 200 (e.g., Figure 3 (As shown) The charge output element 52 outputs a charge with the same polarity as the charged ions in the liquid crystal layer 3. In some embodiments, the charge output element 52 serves as a carrier for the charge with the same polarity as the charged ions in the liquid crystal layer 3 output by the external control circuit 200, and can receive and conduct the aforementioned charge output by the control circuit 200. The charge output element 52 receives a charge with the same polarity as the charged ions in the liquid crystal layer 3 output by the external control circuit 200, and the charge concentration of the charged ions is matched. Since the charge on the charge output element 52 has the same polarity as the charged ions in the liquid crystal layer 3, according to the principle of repulsion of like charges, the charge output element 52 can repel the charged ions in the liquid crystal layer 3, and can actively disperse the charged ions in the liquid crystal layer 3.

[0027] The porous ion adsorption carrier 53 is spaced apart from both the ion sensing element 51 and the charge output element 52. The porous ion adsorption carrier 53 has a porous structure and is used to adsorb charged ions within the liquid crystal layer 3. Specifically, the porous ion adsorption carrier 53 can adsorb and immobilize charged ions within the liquid crystal layer 3 that have been dispersed by the charge output element 52, thereby facilitating the elimination of charged ions within the liquid crystal layer 3.

[0028] It is understood that, in this embodiment of the application, by setting the above-mentioned ion dispersing structure 5 in the non-display area F of the display panel 100, the concentration change of charged ions in the liquid crystal layer 3 can be sensed in real time, thereby realizing dynamic monitoring of charged ions; the charge output element 52 can receive the charge with the same polarity as the charged ions in the liquid crystal layer 3 output by the external control circuit 200. According to the principle of like charges repelling each other, the charge received by the charge output element 52 repels the charged ions in the liquid crystal layer 3, thereby dispersing the charged ions in the liquid crystal layer 3 to the porous ion adsorption carrier 53, where they are adsorbed and fixed, preventing the charged ions from migrating back to the display area X and interfering with the electric field distribution. The above-mentioned configuration can effectively eliminate charged ions within the liquid crystal layer 3, eliminating ionic impurities introduced during liquid crystal filling and other production processes. It prevents charged ions in the liquid crystal layer 3 from migrating and accumulating under the influence of an electric field, forming a fixed charge layer that leads to disordered liquid crystal molecule orientation and display defects such as image retention and ghosting. Furthermore, it prevents charged ions in the liquid crystal layer 3 from altering the electric field distribution within the display panel 100, thus avoiding driving voltage drift, reduced response speed and display stability of the display panel 100, and consequently, a reduced lifespan. It effectively prevents display abnormalities caused by long-term retention and accumulation of charged ions in the liquid crystal layer 3 within the display panel 100. Moreover, the ion dispersal structure 5 is located in the non-display area F, offering strong process compatibility and applicability to various display panels. The above settings effectively solve the problems of image retention and decreased response speed and stability of display panels caused by charged ions in the liquid crystal layer of the display panel. They also solve the problem of long-term retention of charged ions in the liquid crystal layer, eliminate the interference of charged ions on the orientation of liquid crystal molecules, avoid driving voltage drift, improve the response speed of the display panel 100, significantly enhance the display stability, effectively improve the display effect, improve the performance of the display panel 100, and extend the service life of the display panel 100.

[0029] In some embodiments, the ion dispersing structure 5 can be disposed on the surface of the array substrate 1 facing the opposing substrate 2. That is, the ion dispersing structure 5 can be disposed only on the array substrate 1 to disperse and adsorb charged ions in the liquid crystal layer 3. By disposing the ion dispersing structure 5 on the surface of the array substrate 1 facing the opposing substrate 2, it is easier to quickly sense and disperse charged ions, thereby improving the efficiency of dispersing and eliminating charged ions in the liquid crystal layer 3.

[0030] In some embodiments, the size of the array substrate 1 is larger than that of the opposing substrate 2. The array substrate 1 is provided with a driving circuit layer (not shown). By providing the ion dispersing structure 5 on the surface of the array substrate 1 facing the opposing substrate 2, it is possible to reduce the difficulty of the process, improve the process and structural compatibility, and facilitate the improvement of production efficiency.

[0031] In some embodiments, the ion dispersing structure 5 is disposed on the surface of the substrate 2 facing the array substrate 1. That is, the ion dispersing structure 5 can be disposed only on the substrate 2 to disperse and adsorb and fix the charged ions in the liquid crystal layer 3.

[0032] In some embodiments, ion dispersing structures 5 can be provided on the surfaces of the array substrate 1 and the opposing substrate 2 facing each other, thereby facilitating the more efficient elimination of charged ions in the liquid crystal layer 3 and further improving the display effect and performance of the display panel 100.

[0033] Specifically, whether the ion dispersive structure 5 is disposed on the array substrate 1 or on the substrate 2 can be designed according to actual needs, and this application embodiment does not limit this.

[0034] In some embodiments, the ion dispersing structure 5 is located at the corner of the display panel 100. Specifically, the ion dispersing structure 5 may be located at a position corresponding to the side of the display panel 100, and / or at a corner of the display panel 100. For example, in some embodiments, the display panel 100 is rectangular, and the ion dispersing structure 5 may be disposed corresponding to any one or more sides of the rectangular display panel 100, or it may be disposed corresponding to any one or more corners of the rectangle.

[0035] It is understandable that by setting the ion dispersing structure 5 at the corner of the display panel 100, and keeping the ion dispersing structure 5 away from the display area X, it will not affect the setting of the other structures of the display panel 100 and the normal functioning, which will reduce the difficulty of the process. Moreover, since the corner is often the area where the orientation of liquid crystal molecules is easily affected by the edge effect and where charged ions are easy to concentrate or stay at the edge of the electric field, placing the ion dispersing structure 5 here can specifically capture charged ions that migrate from the display area X to the edge, which will improve the elimination effect.

[0036] In one specific embodiment, the ion dispersing structure 5 is located at the corner of the display panel 100. For example, the ion dispersing structure 5 can be provided at all four corners of the display panel 100. By providing the ion dispersing structure 5 at the corner of the display panel 100, the special characteristics of the electric field distribution at the edge of the liquid crystal cell can be utilized to preferentially disperse and capture charged ions that are prone to accumulate at the edge, preventing charged ions from diffusing into the display area X. This keeps the charged ion concentration in the display area X at a low level, thereby further reducing the probability of image retention and ghosting.

[0037] In some embodiments, the ion sensing element 51 includes a first indium tin oxide (ITO) thin film. Specifically, the first ITO thin film is made of indium tin oxide (ITO) material, and its electrical properties can vary with the concentration of charged ions. In some embodiments, the first ITO thin film can be formed on the non-display area F of the array substrate 1 or the counter substrate 2 by processes such as thin film deposition and photolithography.

[0038] Specifically, indium tin oxide (ITO) is a semiconductor material that combines high conductivity and high transparency, and its surface contains active sites such as hydroxyl groups (-OH). The first ITO thin film utilizes the active sites such as hydroxyl groups on the surface of the ITO material to interact with charged ions (such as H+) within the liquid crystal layer 3. + Na + Electrostatic adsorption, chemical adsorption, or ion exchange occurs between charged ions (such as heavy metal ions) in the liquid crystal layer 3 and the surface of the first indium tin oxide film. This causes changes in the concentration and mobility of charge carriers (such as electrons or holes) inside the first indium tin oxide film or the formation of an interfacial barrier. Consequently, the electrical parameters of the first indium tin oxide film, such as resistance, capacitance, or impedance, undergo quantifiable changes, thereby sensing the concentration of charged ions in the liquid crystal layer 3.

[0039] For example, the higher the concentration of charged ions in the liquid crystal layer 3, the greater the change in the electrical parameters of the first indium tin oxide film. This facilitates the alteration of the electrical properties by utilizing the interaction between the charged ions in the liquid crystal layer 3 and the surface of the first indium tin oxide film, enabling real-time sensing of the charged ion concentration in the liquid crystal layer 3. By employing the first indium tin oxide film as the ion sensing element 51, minute changes in the concentration of charged ions in the liquid crystal layer 3 can be converted into significant resistance or impedance signals, thereby facilitating highly sensitive real-time monitoring of the ion concentration within the liquid crystal layer 3.

[0040] In some embodiments, the charge output element 52 includes a second indium tin oxide (ITO) film, which is made of ITO material. The second ITO film is charged by an external control circuit 200, thereby receiving and conducting charges of the same polarity as the charged ions in the liquid crystal layer 3, thus repelling and dispersing the charged ions within the liquid crystal layer 3. By employing the second ITO film as the charge output element 52, its high conductivity allows it to uniformly and rapidly conduct charges of the same polarity as the charged ions in the liquid crystal layer 3 when receiving a voltage applied by the external control circuit 200, generating an effective like-charge repulsion electric field that disperses the accumulated charged ions to the porous ion adsorption carrier 53 region.

[0041] In some embodiments, a first transparent conductive layer 11 is disposed on the surface of the array substrate 1 facing the opposing substrate 2, and the material of the first transparent conductive layer 11 is indium tin oxide. In a specific embodiment, the ion dispersing structure 5 described above is disposed on the surface of the array substrate 1 facing the opposing substrate 2, wherein the ion sensing element 51 of the ion dispersing structure 5 includes a first indium tin oxide thin film, and the charge output element 52 includes a second indium tin oxide thin film.

[0042] In one embodiment, the first transparent conductive layer 11 on the surface of the array substrate 1 facing the opposing substrate 2 is spaced apart from the first indium tin oxide film and the second indium tin oxide film, and is formed from the same indium tin oxide film layer. That is, in this embodiment, the ion dispersing structure 5 is disposed on the surface of the array substrate 1 facing the opposing substrate 2, and the first transparent conductive layer 11, the first indium tin oxide film, and the second indium tin oxide film on the surface of the array substrate 1 are all made of indium tin oxide material, and the three can be formed from the same indium tin oxide film layer using the same process.

[0043] Specifically, the same indium tin oxide (ITO) film layer can be patterned to form a first transparent conductive layer 11, a first ITO thin film, and a second ITO thin film that are spaced apart from each other. That is, in the fabrication process, the ITO material is deposited onto the surface of the array substrate 1 in a single step to form an ITO film layer. Subsequently, through patterning processes such as photolithography and etching, the same ITO film layer is divided into three independent parts: the first transparent conductive layer 11, the first ITO thin film, and the second ITO thin film. The same ITO film layer can be patterned using the same mask or multiple photolithography processes to form the spaced-apart first transparent conductive layer 11, first ITO thin film, and second ITO thin film.

[0044] In some embodiments, the materials and thicknesses of the first indium tin oxide (ITO) film and the second ITO film are completely identical to those of the first transparent conductive layer 11. The spacing between the first ITO film, the second ITO film, and the first transparent conductive layer 11 can be determined by the precision of the photolithography process or the specific structural dimensions of the array substrate 1 to ensure sufficient insulation spacing, which can be designed as needed.

[0045] It is understandable that the above configuration allows the fabrication processes of the ion sensing element 51 and the charge output element 52 to be highly compatible with those of the first transparent conductive layer 11 of the display panel 100. This eliminates the need for additional special materials or complex processes, improving process compatibility, saving on process steps, simplifying the structure, reducing process difficulty, saving costs, and increasing process yield. Simultaneously, the first transparent conductive layer 11, the first indium tin oxide film, and the second indium tin oxide film are spaced apart to prevent short circuits caused by electrical connections, ensuring that the normal functions of the three components do not interfere with each other. While the first transparent conductive layer 11 normally drives the liquid crystal molecules in the display area X, the first and second indium tin oxide films can independently perform charged ion sensing and charge emission functions in the non-display area F, avoiding signal crosstalk and achieving physical isolation and coordinated operation of the display function and ion elimination function. This effectively prevents image retention and ghosting phenomena caused by the accumulation of charged ions. The first transparent conductive layer 11, the first indium tin oxide film, and the second indium tin oxide film are formed from the same indium tin oxide film layer, which can also ensure the consistency of the response characteristics of the ion sensing element 51 and the charge output element 52, and facilitate the improvement of the control accuracy of the ion dispersing structure 5.

[0046] In other embodiments, a second transparent conductive layer 21 may be provided on the surface of the substrate 2 facing the array substrate 1, and the material of the second transparent conductive layer 21 is indium tin oxide. In one specific embodiment, an ion dispersing structure 5 is provided on the surface of the substrate 2 facing the array substrate 1, wherein the ion sensing element 51 of the ion dispersing structure 5 includes a first indium tin oxide thin film, and the charge output element 52 includes a second indium tin oxide thin film. In one specific embodiment, the second transparent conductive layer 21, the first indium tin oxide thin film, and the second indium tin oxide thin film are spaced apart from each other and are formed by the same indium tin oxide film layer. Similarly, the above configuration does not require the introduction of additional special materials or complex processes, which facilitates improved process compatibility, saves process flow, simplifies structure, reduces process difficulty, saves costs, and avoids signal crosstalk, realizing physical isolation and collaborative operation of display function and ion elimination function, effectively preventing afterimages and ghosting phenomena caused by the accumulation of charged ions.

[0047] In some embodiments, the porous ion adsorption support 53 is made of graphene-doped porous silica material. Specifically, the porous ion adsorption support 53 can be formed by doping graphene into a porous silica material. The graphene-doped porous silica material is a porous composite material with silica as a framework and graphene sheets or particles composited in its pore structure or on its surface.

[0048] Specifically, silica provides abundant microporous structures, endowing the material with high specific surface area and stable chemical properties, which is beneficial for capturing ions through physical adsorption. The introduction of graphene, through its unique two-dimensional layered structure and abundant electron cloud distribution, provides additional chemical coordination sites, enhancing the chemical adsorption capacity for charged ions. Because graphene-doped silica porous materials possess high specific surface area and strong adsorption capacity, using graphene-doped silica porous materials as porous ion adsorption carriers 53 provides a huge physical adsorption space due to the high specific surface area and porous structure of silica, enabling the rapid capture and containment of a large number of charged ions. The doping of graphene introduces abundant chemical coordination sites, allowing the porous ion adsorption carrier 53 to not only fix charged ions through physical action but also deeply lock charged ions through chemical bonding or strong electrostatic interactions, thereby improving the overall adsorption capacity and selectivity for various metal ions and organic salt ions. The above-mentioned configuration facilitates the adsorption and fixation of charged ions through physical adsorption and chemical coordination, thereby fixing and eliminating charged ions in the liquid crystal layer 3, preventing image retention and ghosting caused by the accumulation of charged ions, and improving display performance.

[0049] In some embodiments, the graphene doping amount of the porous ion adsorption carrier 53 is 3wt%-8wt%. For example, the graphene doping amount of the porous ion adsorption carrier 53 can be any value such as 3wt%, 4wt%, 5wt%, 6wt%, 7wt%, or 8wt%.

[0050] Specifically, setting the graphene doping amount within the aforementioned range can balance the adsorption performance and structural stability of the porous ion adsorption carrier 53. For example, when the graphene doping amount is less than 3 wt%, the proportion of graphene in the porous ion adsorption carrier 53 is too low, resulting in insufficient chemical coordination sites provided by graphene. The carrier mainly relies on the physical adsorption of silica, limiting the adsorption and fixation efficiency of charged ions and leading to an insignificant adsorption effect. Conversely, when the graphene doping amount is greater than 8 wt%, graphene material tends to aggregate in the pores of the porous silica material, causing a decrease in the effective specific surface area of ​​the porous ion adsorption carrier 53 and even clogging the pores, which in turn reduces the adsorption capacity and adsorption rate.

[0051] It is understandable that by setting the graphene doping amount within the aforementioned range, it is beneficial to avoid pore blockage and specific surface area loss caused by excessive graphene agglomeration, while ensuring sufficient distribution of chemically active sites. This allows the porous ion adsorption carrier 53 to maintain high porosity while possessing superior charged ion capture efficiency, thereby achieving efficient and stable adsorption and fixation of charged ions. This specific material structure helps maintain the stability of adsorption performance during long-term operation, effectively improving the adsorption and fixation efficiency of the porous ion adsorption carrier 53 for charged ions, increasing the specific surface area, and facilitating the long-term fixation of charged ions inside the porous ion adsorption carrier 53. This prevents charged ions from desorbing and returning to the liquid crystal layer 3, further extending the service life of the display panel 100 and maintaining the long-term stability of display quality.

[0052] In some embodiments, the porous ion adsorption carrier 53 has multiple micropores (not shown), and in one embodiment, the pore size of the micropores is 50 nm to 200 nm. For example, the pore size of the micropores can be any value such as 50 nm, 70 nm, 80 nm, 100 nm, 120 nm, 150 nm, 180 nm, 200 nm, etc.

[0053] Specifically, the micropores are the porous structures inside the porous ion adsorption carrier 53 used to accommodate and immobilize charged ions. Their pore size directly determines the diffusion rate of charged ions into the porous ion adsorption carrier 53 and the capacity of the porous ion adsorption carrier 53 to hold charged ions. By setting the pore size to within the range of 50nm-200nm, this size range ensures that freely moving charged ions within the liquid crystal layer 3 can rapidly diffuse into the depths of the pores, avoiding excessively rapid surface adsorption saturation, while also ensuring significant surface adsorption force, thereby enhancing the ability to capture charged ions. This facilitates the formation of a microporous structure suitable for the diffusion and capture of charged ions, allowing charged ions to quickly penetrate deep into the interior of the porous ion adsorption carrier 53, avoiding the problem of excessively rapid saturation caused by relying solely on surface adsorption, and improving adsorption kinetic efficiency and the utilization rate of the porous ion adsorption carrier 53.

[0054] In some embodiments, the porous ion adsorption carrier 53 has a specific surface area of ​​500 m². 2 / g-700m 2 / g. Specifically, by setting the specific surface area of ​​the porous ion adsorption support 53 to 500m². 2 / g-700m 2The surface area is between 1 / g and 1 / g, resulting in an extremely rich pore network and high-density active adsorption sites within the porous ion adsorption carrier 53. The high specific surface area provides more physical adsorption space and chemical coordination sites, enabling the porous ion adsorption carrier 53 to accommodate more charged ions without saturation. This significantly increases the total amount of charged ions, such as metal ions and organic salt ions, that the porous ion adsorption carrier 53 can hold within the liquid crystal cell, thus extending its effective working life.

[0055] In some embodiments, the pore size of the porous ion adsorption carrier 53 is 50 nm-200 nm, and the specific surface area of ​​the porous ion adsorption carrier 53 is 500 m². 2 / g-700m 2 / g. By synergistically limiting the pore size and specific surface area of ​​the micropores as described above, the porous ion adsorption carrier 53 can provide sufficient fixation space while ensuring the rapid entry of charged ions, thereby achieving efficient capture and long-term stable fixation of charged ions, further reducing the concentration of residual charged ions in the liquid crystal cell, effectively eliminating afterimages and ghosting phenomena, and improving display stability.

[0056] See Figure 3 and Figure 4 , Figure 3 This is a simplified structural diagram of an embodiment of the display device provided in the second embodiment of this application. Figure 4 This is a schematic diagram of another embodiment of the display device provided in the second embodiment of this application.

[0057] See Figure 3 and Figure 4 The second embodiment of this application provides a display device 400, which includes a display panel 100 and a control circuit 200. Specifically, the display panel 100 can be any of the display panels 100 described in the above embodiments (e.g., Figure 1 and Figure 2 The control circuit 200 is electrically connected to the display panel 100 and is used to control the display panel 100 to realize the screen display function and control the ion dispersing structure 5 to realize the elimination function of charged ions.

[0058] In some embodiments, the control circuit 200 includes an ion sensing unit 201, a charge emission unit 202, and a control unit 203. Specifically, the ion sensing unit 201 is electrically connected to the ion sensing element 51, and the ion sensing unit 201 is used to detect changes in the electrical parameters of the ion sensing element 51, determine and output the concentration of charged ions in the liquid crystal layer 3.

[0059] In some embodiments, the ion sensing unit 201 stores a preset relationship curve between the concentration of charged ions and electrical parameters, including resistance or impedance. For example, the ion sensing unit 201 stores a preset relationship curve between the concentration of charged ions and resistance, or it stores a preset relationship curve between the concentration of charged ions and impedance. The ion sensing unit 201 is used to detect changes in the electrical parameters of the ion sensing element 51, and based on the preset relationship curve and the detected changes in the electrical parameters of the ion sensing element 51, determines and outputs the concentration of charged ions in the liquid crystal layer 3 to the control unit 203 of the control circuit 200.

[0060] In some embodiments, the charge emission unit 202 is electrically connected to the charge output element 52, and the charge emission unit 202 is used to emit a charge with the same polarity as the charged ions in the liquid crystal layer 3 to the charge output element 52.

[0061] In some embodiments, the control unit 203 is electrically connected to both the ion sensing unit 201 and the charge emission unit 202. The control unit 203 is used to: output an ion dispersal signal to the charge emission unit 202 according to the concentration of charged ions output by the ion sensing unit 201, so as to control the charge emission unit 202 to emit a charge with the same polarity as the charged ions to the charge output element 52, so as to disperse the charged ions to the porous ion adsorption carrier 53.

[0062] Specifically, the ion sensing unit 201 detects changes in the electrical parameters of the ion sensing element 51, determines the concentration of charged ions in the liquid crystal layer 3 based on these changes, and then outputs the determined concentration of charged ions in the liquid crystal layer 3 to the control unit 203. Based on the concentration of charged ions output by the ion sensing unit 201, the control unit 203 determines the ion dispersal signal corresponding to the concentration of charged ions to be output to the charge emission unit 202, and outputs the ion dispersal signal to the charge emission unit 202. This controls the charge emission unit 202 to emit charges with the same polarity and concentration as the charged ions to the charge output element 52, thereby dispersing the charged ions to the porous ion adsorption carrier 53, where they are adsorbed and fixed, thus eliminating the charged ions in the liquid crystal layer 3.

[0063] For example, the ion sensing element 51 is a first indium tin oxide thin film. The ion sensing unit 201 can deduce the concentration of charged ions by measuring the resistance or impedance change of the ion sensing element 51, i.e., the first indium tin oxide thin film, and combining this with a preset relationship curve between the concentration of charged ions and electrical parameters stored therein. The ion sensing unit 201 determines the concentration of charged ions in the above manner and outputs the concentration of charged ions to the control unit 203, so that the control unit 203 can determine the corresponding ion dispersal signal based on the concentration of charged ions determined by the ion sensing unit 201. The control unit 203 outputs the ion dispersal signal to the charge emission unit 202, thereby controlling the charge emission unit 202 to emit a charge with the same polarity and concentration as the charged ion to the charge output element 52. After receiving the charge emitted by the charge emission unit 202, the charge output element 52 repels the charged ion in the liquid crystal layer 3 according to the principle of like charges repulsion. This can disperse the charged ion in the liquid crystal layer 3 to the porous ion adsorption carrier 53, thereby facilitating more precise and efficient dispersal and elimination of the charged ion in the liquid crystal layer 3 and improving the dispersal and elimination efficiency of the charged ion in the liquid crystal layer 3.

[0064] By employing the aforementioned display device 400, the charged ions within the liquid crystal layer 3 are ultimately adsorbed and fixed by the porous ion adsorption carrier 53, effectively eliminating the charged ions in the liquid crystal layer 3. This effectively solves the problems of display ghosting and decreased response speed and stability caused by charged ions in the liquid crystal layer of display panels in related technologies. It also solves the problem of long-term retention of charged ions in the liquid crystal layer, eliminates interference of charged ions on the orientation of liquid crystal molecules, avoids driving voltage drift, improves the response speed of the display panel 100, significantly enhances display stability, effectively improves display effect, enhances the performance of the display panel 100, and extends the service life of the display panel 100.

[0065] In some embodiments, the control unit 203 is configured to: output an ion dispersal signal to the charge emission unit 202 in response to the concentration of charged ions output by the ion sensing unit 201 being greater than or equal to a first threshold. The first threshold is 9 × 10⁻⁶. 5 pcs / cm 3 Up to 1.1×10 6 pcs / cm 3 In one specific implementation, the first threshold is 1×102 6 pcs / cm 3 .

[0066] Specifically, when the control unit 203 receives a signal from the ion sensing unit 201 indicating that the concentration of charged ions in the liquid crystal layer 3 is greater than or equal to the first threshold, the control unit 203 will output an ion dispersal signal to the charge emission unit 202. This signals the charge emission unit 202 to emit a charge with the same polarity and concentration as the charged ions into the charge output element 52, thereby eliminating the charged ions in the liquid crystal layer 3. When the concentration of charged ions in the liquid crystal layer 3, as indicated by the ion sensing unit 201, is less than the first threshold, the control unit 203 will not output an ion dispersal signal to the charge emission unit 202.

[0067] It is understandable that, through the above settings, when the concentration of charged ions in the liquid crystal layer 3 is too low and the charged ions will not affect the display effect, the control unit 203 will not output the ion dispersal signal to the charge emission unit 202 temporarily, so as not to disperse the charged ions, which is conducive to reducing power consumption and saving energy.

[0068] By limiting the first threshold to 9×10 5 pcs / cm 3 Up to 1.1×10 6 pcs / cm 3 This allows the control unit 203 to intervene promptly when the concentration of charged ions in the liquid crystal layer 3 reaches a level that may cause slight display abnormalities but has not yet resulted in ghosting or trailing images, thus achieving early intervention. Setting the first threshold within the aforementioned range avoids frequent triggering due to an excessively low threshold, which helps reduce the operating frequency of the charge emission unit 202 and improve its lifespan. Simultaneously, it avoids excessive accumulation of charged ions in the liquid crystal layer 3 due to an excessively high threshold, ensuring that the electric field distribution within the liquid crystal layer 3 remains uniform over a larger range, thereby preventing significant drift in the driving voltage. By setting the first threshold, the ion dispersal action is executed only when necessary, which helps save power consumption in the display device 400 and reduces overall power consumption. This threshold range ensures a good balance between response speed and display stability in the ion dispersal mechanism, facilitating the reduction of interference with liquid crystal molecule orientation and maintaining high-quality display effects.

[0069] In one specific embodiment, the control unit 203 is configured to: in response to the concentration of charged ions output by the ion sensing unit 201 being greater than or equal to the aforementioned first threshold, output an ion dispersal signal to the charge emission unit 202, and control the charge emission unit 202 to output a voltage of 5V-10V to the charge output element 52. In some embodiments, the control unit 203 controls the charge emission unit 202 to output the aforementioned voltage to the charge output element 52 for a duration of 10ms-20ms.

[0070] Specifically, the control unit 203 determines that the concentration of charged ions in the liquid crystal layer 3 output by the ion sensing unit 201 is greater than or equal to the first threshold, and determines the amount of charge required to disperse the charged ions of that concentration based on the concentration of charged ions output by the ion sensing unit 201. It then outputs an ion dispersal signal to the charge emission unit 202 that matches the concentration of the charged ions. This ion dispersal signal is an output voltage of 5V-10V with an output time of 10ms-20ms, which facilitates more efficient and precise dispersal and elimination of the charged ions. It ensures sufficient repulsive force to drive the charged ions away from the liquid crystal layer 3, allowing the dispersal action to have sufficient duration to complete the dispersal and adsorption process of the charged ions. Simultaneously, it limits the duration of action to avoid excessive disturbance of liquid crystal molecules or energy waste due to excessively long action times.

[0071] In other embodiments, the control unit 203 may output other types or sizes of ion dispersal signals to the charge emission unit 202. The specific type or size of the ion dispersal signal needs to be determined according to the concentration and polarity of the charged ions in the liquid crystal layer 3 output by the ion sensing unit 201. Specifically, it can be set according to actual needs.

[0072] See Figure 4 In some embodiments, the display device 400 includes a display panel 100 and a backlight module 300. The display panel 100 is disposed on one side of the backlight module 300. For example, the display panel 100 is a liquid crystal display panel. The display panel 100 is disposed on the light-emitting side of the backlight module 300, and the backlight module 300 is used to provide backlight for the display panel 100 so that the display panel 100 can realize the image display function.

[0073] Specifically, the display panel 100 is the display panel 100 in any of the above embodiments, and the display device 400 may still include the control circuit 200 described above.

[0074] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A display panel having a display area and a non-display area disposed around the periphery of the display area; characterized in that, include: Array substrate; The substrate is disposed on one side of the array substrate; A liquid crystal layer is disposed between the array substrate and the opposing substrate; The non-display area of ​​the display panel is provided with an ion dispersing structure, the ion dispersing structure comprising: An ion sensing element is used to sense the concentration of charged ions within the liquid crystal layer; A charge output element, spaced apart from the ion sensing element, is used to receive a charge of the same polarity as the charged ions in the liquid crystal layer output by the control circuit. A porous ion adsorption carrier is disposed at intervals from both the ion sensing element and the charge output element, and is used to adsorb charged ions in the liquid crystal layer.

2. The display panel according to claim 1, characterized in that, The ion dispersing structure is located at the corner of the display panel; The ion dispersing structure is disposed on the surface of the array substrate facing the opposing substrate; and / or, the ion dispersing structure is disposed on the surface of the opposing substrate facing the array substrate.

3. The display panel according to claim 1, characterized in that, The ion sensing element includes a first indium tin oxide thin film; The charge output element includes a second indium tin oxide thin film.

4. The display panel according to claim 3, characterized in that, The ion dispersing structure is provided on the surface of the array substrate facing the opposing substrate; A first transparent conductive layer is disposed on the surface of the array substrate facing the opposing substrate. The first transparent conductive layer, the first indium tin oxide film, and the second indium tin oxide film are spaced apart from each other and are formed from the same indium tin oxide film layer.

5. The display panel according to claim 1, characterized in that, The porous ion adsorption carrier material includes a graphene-doped porous silica material; wherein the doping amount of the graphene is 3wt%-8wt%.

6. The display panel according to claim 5, characterized in that, The porous ion adsorption carrier has multiple micropores, and the pore size of the micropores is 50nm-200nm; And / or, the specific surface area of ​​the porous ion adsorption carrier is 500 m². 2 / g-700m 2 / g.

7. A display device, characterized in that, include: The display panel as described in any one of claims 1-6; Control circuit, including: An ion sensing unit is electrically connected to the ion sensing element; it is used to detect changes in the electrical parameters of the ion sensing element, determine and output the concentration of charged ions in the liquid crystal layer; A charge emission unit is electrically connected to the charge output element; The control unit is electrically connected to both the ion sensing unit and the charge emission unit. The control unit is used to: output an ion dispersal signal to the charge emission unit according to the concentration of the charged ions output by the ion sensing unit, so as to control the charge emission unit to emit a charge with the same polarity as the charged ions to the charge output element, so as to disperse the charged ions to the porous ion adsorption carrier.

8. The display device according to claim 7, characterized in that, The control unit is used for: In response to the concentration of charged ions output by the ion sensing unit being greater than or equal to a first threshold, the ion dispersal signal is output to the charge emission unit; wherein, the first threshold is 9 × 10⁻⁶. 5 pcs / cm 3 Up to 1.1×10 6 pcs / cm 3 .

9. The display device according to claim 8, characterized in that, The control unit is used for: In response to the concentration of charged ions output by the ion sensing unit being greater than or equal to the first threshold, the ion dispersal signal is output to the charge emission unit, controlling the charge emission unit to output a voltage of 5V-10V to the charge output element for a duration of 10ms-20ms.

10. The display device according to claim 7, characterized in that, The ion sensing unit stores a preset curve showing the relationship between the concentration of charged ions and electrical parameters, including resistance or impedance. The ion sensing unit is used to detect changes in the electrical parameters of the ion sensing element, and based on the preset relationship curve and the detected changes in the electrical parameters of the ion sensing element, determines and outputs the concentration of charged ions in the liquid crystal layer to the control unit.

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