Liquid crystal display panel and method for manufacturing the same

Abstract

The present invention relates to a liquid crystal display panel and a method for manufacturing the same. Among them, the liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer filled between the first substrate and the second substrate; magnetic particles are mixed in the liquid crystal layer, and the magnetic particles can be combined with the debris in the liquid crystal layer; a magnetic attraction part is provided in the non-display area on the first substrate or the second substrate. In the above liquid crystal display panel, magnetic particles are provided in the liquid crystal layer, and the magnetic particles can be combined with the debris separated from the first alignment layer and the second alignment layer into the liquid crystal layer and make the debris magnetic. The debris with magnetism can move towards the magnetic attraction part under the action of the magnetic field and be adsorbed. In this way, the debris is transferred to the non-display area, and the debris in the display area is eliminated or reduced, so that the technical problem of broken bright spots in the liquid crystal display panel can be eliminated or improved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a liquid crystal display panel and a method for manufacturing the same. Background Art

[0002] For a liquid crystal display (LCD), it generally includes an array substrate, a color filter substrate, and a liquid crystal layer formed between the array substrate and the color filter substrate. For the array substrate and the color filter substrate of the LCD, an alignment layer is formed on the side in contact with the liquid crystal layer, and this alignment layer is used to define the initial angular state of liquid crystal molecules. A common way to form the alignment layer is to perform rubbing alignment on the PI layer. During the rubbing alignment process, due to poor rubbing process or low wear resistance of the PI layer, the PI layer is prone to generate some debris (detached from the PI layer and in the liquid crystal layer), and these debris will form bright spots in the liquid crystal cell. In addition to the above rubbing alignment process, when the LCD is accidentally subjected to a certain external pressure or bent during handling, friction will occur between the spacer (PS) and the array substrate, and debris will also be formed in the liquid crystal cell, resulting in bright spots.

[0003] The principle of debris causing bright spots is as follows: The debris itself is a transparent material. Since it scatters the linearly polarized light passing through the lower polarizer in the pixel opening area, the polarization state of the linearly polarized light changes, causing a part of the light to escape from the upper polarizer, resulting in bright spots. In addition, larger particles of debris will change the liquid crystal alignment, also changing the polarization state of the linearly polarized light, causing bright spots on the LCD. These bright spots will seriously reduce the product yield and affect the taste and quality of the display panel. Summary of the Invention

[0004] The present invention provides a liquid crystal display panel and a method for manufacturing the same to solve the technical problem in the prior art that bright spots are caused by debris separated from the alignment layer into the liquid crystal layer in the display area of the liquid crystal display panel.

[0005] The liquid crystal display panel provided by the present invention includes a first substrate, a second substrate, and a liquid crystal layer filled between the first substrate and the second substrate; magnetic particles are mixed in the liquid crystal layer, and the magnetic particles can bind to the debris in the liquid crystal layer; a magnetic attracting part is provided in the non-display area on the first substrate or the second substrate.

[0006] Wherein, the first substrate and the second substrate are disposed opposite to each other through a sealant, and the magnetic attracting part is disposed on the side of the sealant close to the liquid crystal layer and adjacent to the sealant.

[0007] Among them, the non-display area of the first substrate or the second substrate is located around the display area and surrounds the display area; the magnetic attraction part is continuously arranged around the display area of the first substrate or the second substrate; alternatively, the number of the magnetic attraction parts is multiple, and the multiple magnetic attraction parts are arranged at intervals around the display area of the first substrate or the second substrate.

[0008] Among them, the magnetic attraction part is a permanent magnet or an electromagnet.

[0009] Among them, the magnetic particles are magnetic metal oxide particles containing at least one of Fe, Ni, Co, and Mn.

[0010] Among them, the size of the magnetic particles is 50 to 300 nanometers; and / or the proportion of the magnetic particles in the liquid crystal layer is 0.1 to 0.5 wt%.

[0011] The preparation method of the liquid crystal display panel provided by the present invention includes:

[0012] Step S1, respectively prepare a first substrate and a second substrate; during the preparation of the first substrate, form a magnetic attraction part in the non-display area of the first substrate, or during the preparation of the second substrate, form a magnetic attraction part in the non-display area of the second substrate;

[0013] Step S2, inject liquid crystal molecules between the first substrate and the second substrate and pair the cells, and magnetic particles are mixed in the injected liquid crystal molecules.

[0014] Among them, the preparation method of the liquid crystal display panel further includes:

[0015] Step S3, move the paired first substrate and second substrate, and make the magnetic particles fully contact with debris in the liquid crystal layer through the movement.

[0016] Among them, the preparation method of the liquid crystal display panel further includes:

[0017] Step S4, place the paired first substrate and second substrate in a magnetic field, so that the debris combined with magnetic particles is adsorbed onto the magnetic attraction part under the action of the magnetic field.

[0018] Among them, before performing step S2, the preparation method of the liquid crystal display panel further includes:

[0019] Step S11, pre-mix the liquid crystal molecules and the magnetic particles mechanically or ultrasonically.

[0020] The above liquid crystal display panel and its preparation method provided by the present invention have the following advantages compared with the prior art:

[0021] The liquid crystal display panel and its manufacturing method provided by the present invention are provided with magnetic particles in the liquid crystal layer. These magnetic particles can combine with the debris separated from the first alignment layer and the second alignment layer into the liquid crystal layer. After combination, the debris separated from the first alignment layer and the second alignment layer in the liquid crystal layer becomes magnetic. In this case, when the liquid crystal display panel is placed in an external magnetic field environment or a magnetic field is formed inside the liquid crystal display panel, under the action of the magnetic field, the magnetic debris can move in a specific direction. By configuring the position of the magnetic field or the magnetic attraction part, the magnetic debris and the excess magnetic particles can be controlled to move towards the magnetic attraction part and be adsorbed on the magnetic attraction part. In this way, the debris in the liquid crystal layer is transferred to the non-display area, thereby eliminating or reducing the debris in the display area, and thus being able to eliminate or improve the technical problem of bright spots caused by debris in the liquid crystal display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the liquid crystal display panel in the initial state in the embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the liquid crystal display panel after the magnetic particles are combined with the debris in the embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram when the liquid crystal display panel in the embodiment of the present invention is placed in an external magnetic field environment;

[0027] Figure 4 It is a schematic structural diagram of the final form of the liquid crystal display panel in the embodiment of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the display area, non-display area and magnetic attraction part of the liquid crystal display panel in an embodiment of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the display area, non-display area and magnetic attraction part of the liquid crystal display panel in another embodiment of the present invention;

[0030] Figure 7Schematic flow chart of the method for manufacturing a liquid crystal display panel according to an embodiment of the present invention.

[0031] In the figure:

[0032] 10 - First substrate; 11 - First alignment layer; 12 - Magnetic attraction part; 13 - Driving transistor;

[0033] 20 - Second substrate; 21 - Second alignment layer; 23 - Color filter; 24 - Black matrix; 25 - Spacer;

[0034] 30 - Liquid crystal layer; 31 - Liquid crystal molecules; 32 - Magnetic particles;

[0035] 40 - Sealant;

[0036] A1 - Display area; A2 - Non - display area; SX - Debris. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] The embodiments of the liquid crystal display panel and the method for manufacturing the same provided by the present invention will be described below with reference to the accompanying drawings.

[0039] In an embodiment of the liquid crystal display panel of the present invention, referring to Figures 1 to 6 , the liquid crystal display panel includes a first substrate 10, a second substrate 20, and a liquid crystal layer 30 filled between the first substrate 10 and the second substrate 20.

[0040] Regarding the first substrate 10 and the second substrate 20 in the liquid crystal display panel of the present invention, generally, structures such as driving transistors 13, scan lines, data lines, and pixel electrodes can be specifically fabricated on the first substrate 10. The first substrate 10 can generally be referred to as an array substrate (Array substrate or TFT substrate). Structures such as color filters 23, black matrices 24, common electrodes, and spacers 25 (PS) can be fabricated on the second substrate 20. The second substrate 20 can generally be referred to as a color film substrate (CF substrate). However, the liquid crystal display panel of the present invention is not limited to this. Color filters, common electrodes, etc. can also be not fabricated on the second substrate 20 but on the first substrate 10.

[0041] In addition to the above structures such as the driving transistor 13, pixel electrode, common electrode, etc., a first alignment layer 11 is formed on one side of the first substrate 10 in contact with the liquid crystal layer 30, and a second alignment layer 21 is formed on one side of the second substrate 20 in contact with the liquid crystal layer 30. The first alignment layer 11 and the second alignment layer 21 are used to define the initial angles of the liquid crystal molecules 31 in the liquid crystal layer 30.

[0042] As Figure 5 and Figure 6 shown, for the liquid crystal display panel of the present invention, it has a display area A1 and a non-display area A2. The display area A1 is generally located in the central area of the liquid crystal display panel, and the non-display area A2 is generally located in the edge area of the liquid crystal display panel and surrounds the display area A1. Corresponding to this overall structure of the liquid crystal display panel, the first substrate 10 and the second substrate 20 also have corresponding display areas A1 and non-display areas A2.

[0043] As Figures 1 to 4 shown, the liquid crystal layer 30 contains liquid crystal molecules 31. Outside the liquid crystal molecules 31, there are also magnetic particles 32 in the liquid crystal layer 30. The magnetic particles 32 are mixed in the liquid crystal molecules 31 (the magnetic particles 32 being mixed in the liquid crystal molecules 31 refers to a certain stage state of the liquid crystal display panel. In the final product form of the liquid crystal display panel, the magnetic particles 32 move to the non-display area A2 of the liquid crystal display panel under the action of a magnetic field and are adsorbed on the magnetic attracting part). The magnetic particles 32 in the liquid crystal layer 30 have two aspects of characteristics: First, the magnetic particles 32 are insoluble in the liquid crystal molecules 31 in the liquid crystal layer 30 and will not be decomposed in the liquid crystal molecules 31 in other ways, so that the magnetic particles 32 can maintain the integrity of their particle structure in the liquid crystal layer 30; Second, the magnetic particles 32 can be combined with the debris SX separated from the first alignment layer and the second alignment layer into the liquid crystal layer 30. After the magnetic particles 32 are combined with the debris SX, the debris SX becomes magnetic. Specifically, the magnetic particles 32 and the debris SX can be combined or attached by means of complexation, hydrogen bonds, etc. The magnetic particles 32 can be magnetic metal oxide particles containing at least one of Fe, Ni, Co, and Mn. Of course, the above selection range of the magnetic particles 32 is exemplary. In actual implementation, the magnetic particles 32 can also be selected as other types of particles. The size of the magnetic particles 32 can be in the range of 50 - 300 nanometers. Within this size range, as a further preference, the size of the magnetic particles 32 can be in the range of 50 - 100 nanometers. The proportion of the magnetic particles 32 in the liquid crystal layer 30 is 0.1 - 0.5 wt%.

[0044] As Figures 1 to 6As shown, a magnetic attraction portion 12 is provided in the non-display area A2 on the first substrate 10. The magnetic attraction portion 12 is used to attract the debris SX having magnetism after being combined with the magnetic particles 32. Specifically, the magnetic attraction portion 12 can be a permanent magnet or an electromagnet. The magnetic attraction portion 12 can specifically be in the form of a thin film or a film layer structure.

[0045] In the liquid crystal display panel of this embodiment, magnetic particles 32 are present in the liquid crystal layer 30. These magnetic particles 32 can combine with the debris SX separated from the first alignment layer 11 and the second alignment layer 21 into the liquid crystal layer 30. After the combination, the debris SX separated from the first alignment layer 11 and the second alignment layer 21 into the liquid crystal layer 30 becomes magnetic. In this case, when the liquid crystal display panel is placed in an external magnetic field environment or a magnetic field is formed within the liquid crystal display panel, under the action of the magnetic field, the magnetic debris SX can move in a specific direction. By configuring the position of the magnetic field or the magnetic attraction portion 12, the magnetic debris SX and the excess magnetic particles 32 can be controlled to move towards the magnetic attraction portion 12 and be adsorbed on the magnetic attraction portion 12. In this way, the debris SX is transferred to the non-display area A2, thereby eliminating or reducing the debris SX in the display area A1, and thus being able to eliminate or improve the technical problem of the appearance of bright broken points in the liquid crystal display panel.

[0046] In other embodiments of the liquid crystal display panel, the magnetic attraction portion 12 may not be formed on the first substrate 10, but a magnetic attraction portion is provided in the non-display area A2 on the second substrate 20. Based on a principle similar to that of forming the magnetic attraction portion 12 on the first substrate 10 above, the liquid crystal display panels in these other embodiments can also eliminate or reduce the debris SX in the display area A1, thereby eliminating or improving the technical problem of the appearance of bright broken points.

[0047] When actually implementing the solution of the present invention, for the magnetic particles 32 in the liquid crystal layer 30, even if some of the magnetic particles 32 bind to the liquid crystal molecules 31, due to the integrity and interaction of the liquid crystal molecules 31, the liquid crystal molecules 31 will not move under the action of the magnetic field, and thus will not cause abnormal display. At the same time, there will inevitably be at least some magnetic particles 32 that can bind to the debris SX and, based on the above solution and process, are adsorbed by the magnetic parts provided on the first substrate 10 or the second substrate 20, thereby moving the debris SX to the non-display area A2 of the liquid crystal display panel, avoiding the technical problem of bright spots in the liquid crystal display panel. Of course, to achieve better technical effects, the magnetic particles 32 can be surface-treated (for example, the magnetic particles 32 are hydrophilized so that the magnetic particles 32 do not link with the liquid crystal molecules), so that the magnetic particles 32 are insoluble in the liquid crystal molecules 31 and do not bind to the liquid crystal molecules 31. This can ensure that more magnetic particles 32 bind to the debris SX, and more debris SX can be transferred to the non-display area A2, reducing the debris SX remaining in the display area A1.

[0048] In an embodiment of the liquid crystal display panel, the first substrate 10 and the second substrate 20 are bonded and disposed opposite to each other through a sealant 40, and the magnetic attracting parts provided on the first substrate 10 and the second substrate 20 are disposed on one side of the sealant 40 close to the liquid crystal layer 30 and adjacent to the sealant 40. In this setting, the magnetic attracting part 12 provided on the first substrate 10 can play a role in slowing down the flow of the liquid crystal molecules 31, and the magnetic attracting part provided on the second substrate 20 can play a role in limiting the coating of the sealant 40.

[0049] In an embodiment of the liquid crystal display panel, for the first substrate 10 and the second substrate 20, their non-display areas A2 are located around the display area A1 and surround their respective display areas A1. In this structure, as Figure 5 shown, the magnetic attracting part 12 on the first substrate 10 is continuously disposed around the display area A1 of the first substrate 10. Similarly, when a magnetic attracting part is provided on the second substrate 20, the magnetic attracting part can also be continuously disposed around the display area A1 of the second substrate 20.

[0050] In other embodiments of the display panel, the number of magnetic attracting parts provided on the first substrate 10 or the second substrate 20 can be multiple. As Figure 6 shown, multiple magnetic attracting parts 12 are spaced apart and disposed around the display area A1 of the first substrate 10, that is, multiple magnetic attracting parts 12 are spaced apart and disposed in the non-display area A2 of the first substrate 10. Similarly, multiple magnetic attracting parts 12 can also be spaced apart and disposed around the display area A1 of the second substrate 20, that is, multiple magnetic attracting parts 12 are spaced apart and disposed in the non-display area A2 of the second substrate 20.

[0051] In an embodiment of the method for manufacturing a liquid crystal display panel of the present invention, the method for manufacturing the liquid crystal display panel includes the following steps S1 to S4, as Figure 7 shown.

[0052] Step S1: Prepare a first substrate 10 and a second substrate 20 respectively.

[0053] When preparing the first substrate 10 in step S1, patterns of driving transistors, scan lines, data lines, pixel electrodes, and a first alignment layer 11 can be prepared respectively. The preparation methods of the above structures are known in the prior art, and the specific preparation processes thereof will not be described in detail. In addition to the above structures, during the preparation of the first substrate 10, a magnetic attraction part 12 is also formed in a non-display area A2 on the first substrate 10; the magnetic attraction part 12 can specifically be a thin film or a film-like structure, and the structure of the magnetic attraction part 12 can be prepared by a patterning process or other processes. When preparing the second substrate 20 in step S1, structures such as a common electrode, a color filter 23, a black matrix 24, and a second alignment layer 21 can be prepared respectively. The preparation methods of the above structures are known in the prior art, and the specific preparation processes thereof will not be described in detail. Based on the liquid crystal display panel prepared according to this embodiment, debris SX and excess magnetic particles 32 separated from the first alignment layer 11 and the second alignment layer 21 into the liquid crystal layer 30 are transferred to and adsorbed on the magnetic attraction part 12 under the action of a magnetic field.

[0054] In an alternative embodiment, when preparing the first substrate 10 in step S1, the preparation of the magnetic attraction part 12 can be omitted. Instead, when preparing the second substrate 20, in addition to preparing structures such as a common electrode, a color filter 23, a black matrix 24, and a second alignment layer 21, a magnetic attraction part is also formed in a non-display area A2 on the second substrate 20; the magnetic attraction part can specifically be a thin film or a film-like structure, and the structure of the magnetic attraction part can be prepared by a patterning process or other processes. Based on the liquid crystal display panel prepared according to this alternative embodiment, debris SX and excess magnetic particles 32 are transferred to and adsorbed on the magnetic attraction part of the second substrate 20 under the action of a magnetic field.

[0055] Step S2: Inject liquid crystal molecules 31 between the first substrate 10 and the second substrate 20 and seal the cell. The injected liquid crystal molecules 31 are mixed with magnetic particles 32.

[0056] Before performing step S2, the following step S11 can also be carried out: for the liquid crystal molecules 31 to be injected, the liquid crystal molecules 31 and the magnetic particles 32 are mechanically or ultrasonically mixed in advance. This can make the magnetic particles 32 evenly distributed in the liquid crystal molecules 31. When ultrasonically mixing the liquid crystal molecules 31 and the magnetic particles 32, the specific process can be as follows: First, the pre-weighed magnetic particles 32 and liquid crystal molecules 31 are mixed and placed in a container; thereafter, the mixed liquid of the magnetic particles 32 and liquid crystal molecules 31 in the container is ultrasonically mixed, and during this process, the mixed liquid in the container is heated at the same time, and the heated temperature is slightly lower than the clearing point temperature of the liquid crystal molecules 31; then, after ultrasonically mixing and heating for a predetermined time, the mixed liquid of the magnetic particles 32 and liquid crystal molecules 31 in the container is cooled to room temperature.

[0057] In step S2, for the first substrate 10 and the second substrate 20, a mixed liquid of liquid crystal molecules 31 and magnetic particles 32 can be injected onto the first substrate 10 in a way such as dropping, and sealant 40 can be coated on the edge of the second substrate 20. After that, the first substrate 10 and the second substrate 20 are aligned, and the mixed liquid of liquid crystal molecules 31 and magnetic particles 32 is located between the first substrate 10 and the second substrate 20, serving as the liquid crystal layer 30.

[0058] Step S3, move the aligned first substrate 10 and second substrate 20, and through the movement, make the magnetic particles 32 fully contact with the debris SX in the liquid crystal layer 30.

[0059] In this step S3, the specific moving method for the aligned first substrate 10 and second substrate 20 can be various moving methods and their combinations such as shaking, flipping, translation, rotation, etc. After the movement in this step, the magnetic particles 32 can fully contact with the debris SX of the first alignment layer 11 and the second alignment layer 21, so that more debris SX combines with the magnetic particles 32 and becomes magnetic. These magnetic debris SX can be moved to the non-display area A2 of the liquid crystal display panel under the action of the magnetic field and adsorbed and fixed on the magnetic attracting part of the first substrate 10 or the second substrate 20, so that the amount of debris SX can be more thoroughly reduced within the display area A1 of the liquid crystal display panel, and the technical problem of the liquid crystal display panel having broken bright dots can be better improved or avoided.

[0060] In step S3, the movement of the first substrate 10 and the second substrate 20 after alignment can be carried out independently in a dedicated process. However, in addition to this, it can also be carried out synchronously during the process of attaching a polarizing plate or assembling a backlight (attaching a polarizing plate and assembling a backlight are usually carried out after the alignment of the first substrate 10 and the second substrate 20, and during the process of attaching a polarizing plate and assembling a backlight, it is necessary to move or flip the first substrate 10 and the second substrate 20 after alignment). In this case, there is no need to specifically move the first substrate 10 and the second substrate 20 after alignment in a dedicated process because the first substrate 10 and the second substrate 20 after alignment have already been moved during the process of attaching a polarizing plate and assembling a backlight.

[0061] Step S4: Place the first substrate 10 and the second substrate 20 after alignment in a magnetic field, so that the debris SX combined with the magnetic particles 32 is adsorbed onto the magnetic adsorption part of the first substrate 10 or the second substrate 20 under the action of the magnetic field.

[0062] In step S4, a magnetic field can be constructed outside the liquid crystal display panel, and the liquid crystal display panel is moved into this external magnetic field environment. For the liquid crystal display panel in this external magnetic field, the debris SX in its liquid crystal layer 30 has magnetism due to its combination with the magnetic particles 32 and will move under the action of the magnetic field; in addition, the excess magnetic particles 32 will also move under the action of the magnetic field. Thus, by configuring the posture of the liquid crystal display panel in the magnetic field, the magnetized debris SX in the liquid crystal layer 30 and the excess magnetic particles 32 will move to the non-display area A2 of the liquid crystal display panel and be adsorbed onto the magnetic adsorption part of the first substrate 10 or the second substrate 20.

[0063] In actual implementation, in addition to constructing a magnetic field outside the liquid crystal display panel, a corresponding magnetic field generator can also be provided inside the liquid crystal display panel, for example, generating a magnetic field inside the liquid crystal display panel when powered on, which can also play the role and effect of moving the debris SX and the excess magnetic particles 32 towards the non-display area A2 of the liquid crystal display panel.

[0064] In summary, for the liquid crystal display panel and its manufacturing method provided by the present invention, magnetic particles 32 are provided in the liquid crystal layer 30. These magnetic particles 32 can combine with the debris SX separated from the first alignment layer 11 and the second alignment layer 21 into the liquid crystal layer 30. After combination, the debris SX separated from the first alignment layer 11 and the second alignment layer 21 into the liquid crystal layer 30 becomes magnetic. In this case, when the liquid crystal display panel is placed in an external magnetic field environment or a magnetic field is formed within the liquid crystal display panel, under the action of the magnetic field, the magnetic debris SX can move in a specific direction. By configuring the position of the magnetic field or the magnetic attraction part 12, the magnetic debris SX and the excess magnetic particles 32 can be controlled to move towards the magnetic attraction part on the first substrate 10 or the second substrate 20 and be adsorbed on the magnetic attraction part of the first substrate 10 or the second substrate 20. In this way, the debris SX is transferred to the non-display area A2, thereby eliminating or reducing the debris SX in the display area A1, and thus being able to eliminate or improve the technical problem of broken bright spots in the liquid crystal display panel.

[0065] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0066] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A liquid crystal display panel, characterized in that, the liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer filled between the first substrate and the second substrate; magnetic particles are mixed in the liquid crystal layer, the magnetic particles are insoluble in the liquid crystal molecules in the liquid crystal layer, and the magnetic particles are not decomposed in the liquid crystal molecules; so that the magnetic particles maintain the integrity of their particle structure in the liquid crystal layer, and the magnetic particles can be combined with debris in the liquid crystal layer, and after the magnetic particles are combined with the debris, the debris becomes magnetic; a magnetic attraction part is provided in the non-display area on the first substrate or the second substrate, and the magnetic attraction part is used for adsorbing the debris that becomes magnetic after being combined with the magnetic particles.

2. The liquid crystal display panel according to claim 1, characterized in that, the first substrate and the second substrate are disposed opposite to each other through a sealant, and the magnetic attraction part is disposed on a side of the sealant close to the liquid crystal layer and adjacent to the sealant.

3. The liquid crystal display panel according to claim 1, characterized in that, the non-display areas of the first substrate and the second substrate are located around the display area and surround the display area therein; the magnetic attraction part is continuously disposed around the display area of the first substrate or the second substrate; or, the number of the magnetic attraction parts is multiple, and the multiple magnetic attraction parts are spaced apart and disposed around the display area of the first substrate or the second substrate.

4. The liquid crystal display panel according to claim 1, characterized in that, the magnetic attraction part is a permanent magnet or an electromagnet.

5. The liquid crystal display panel according to claim 1, characterized in that, the magnetic particles are magnetic metal oxide particles containing at least one of Fe, Ni, Co, and Mn.

6. The liquid crystal display panel according to claim 1, characterized in that, the size of the magnetic particles is 50 to 300 nanometers; and / or the proportion of the magnetic particles in the liquid crystal layer is 0.1 to 0.5 wt%.

7. A method for manufacturing a liquid crystal display panel, characterized in that, the method for manufacturing the liquid crystal display panel includes: Step S1, respectively preparing a first substrate and a second substrate; during the process of preparing the first substrate, forming a magnetic attraction part in the non-display area on the first substrate, or during the process of preparing the second substrate, forming a magnetic attraction part in the non-display area on the second substrate; Step S2, injecting liquid crystal molecules between the first substrate and the second substrate and aligning the cells, and the injected liquid crystal molecules are mixed with magnetic particles; the method for manufacturing the liquid crystal display panel further includes: Step S3, moving the aligned first substrate and second substrate, and making the magnetic particles fully contact with debris in the liquid crystal layer through the movement; the method for manufacturing the liquid crystal display panel further includes: Step S4, placing the aligned first substrate and second substrate in a magnetic field, so that the debris combined with the magnetic particles is adsorbed onto the magnetic attraction part under the action of the magnetic field.

8. The method for manufacturing a liquid crystal display panel according to claim 7, characterized in that, before performing the step S2, the method for manufacturing the liquid crystal display panel further includes: Step S11, mechanically or ultrasonically mix the liquid crystal molecules and the magnetic particles in advance.

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