Depolarization film and processing method therefor, display module and electronic device

Abstract

The present application relates to the technical field of screen depolarization. Provided are a depolarization film and a processing method therefor, a display module and an electronic device, which are used for solving the problem of how to convert linearly polarized image light into isotropic natural light so as to improve the comfort of a user in perceiving the image light. The depolarization film comprises a liquid crystal layer. The liquid crystal layer comprises a plurality of liquid crystal molecule sets arranged in an array along a plane where the liquid crystal layer is located. Each liquid crystal molecule set comprises a liquid crystal molecule group, the liquid crystal molecule group comprising a plurality of liquid crystal molecules arranged in a line. The line comprises a plurality of segments, and the orientation vector direction of the liquid crystal molecules arranged in each segment is consistent with the extension direction of the segment. At least one liquid crystal molecule group is provided, and at least two segments of the line extend in different directions; alternatively, a plurality of liquid crystal molecule groups are provided, and the lines in which the liquid crystal molecules in at least two of the plurality of liquid crystal molecule groups are arranged extend in different directions. The depolarization film provided in the present application is used in a screen.

Description

Debiasing film and processing method thereof, display module and electronic device TECHNICAL FIELD

[0001] The present application relates to the technical field of screen debiasing, and in particular to a debiasing film and a processing method thereof, a display module and an electronic device. BACKGROUND

[0002] Electronic devices such as mobile phones, tablets and laptops are provided with screens to achieve display functions. The light-emitting side of the display panel in the screen is provided with a polarizing layer, which is used to reduce reflection, suppress glare, improve contrast and protect privacy, so as to improve the visibility and comfort of the screen in various environments.

[0003] However, the image light emitted by the display panel is converted into linearly polarized light with a polarization degree of up to 99% after passing through the polarizing layer. The stimulation of linearly polarized light to user photoreceptor cells is anisotropic, while user photoreceptor cells are more comfortable to isotropic natural light. Therefore, the image light displayed by the existing screen cannot meet the comfort needs of users.

[0004] SUMMARY

[0005] Embodiments of the present application provide a debiasing film and a processing method thereof, a display module and an electronic device, which are used to solve the problem of how to convert linearly polarized image light into isotropic natural light to improve the comfort of users in receiving image light.

[0006] To achieve the above-mentioned purpose, embodiments of the present application adopt the following technical solutions:

[0007] In a first aspect, a debiasing film is provided, which includes a liquid crystal layer. The liquid crystal layer includes a plurality of liquid crystal molecule sets arranged in an array along a plane in which the liquid crystal layer is located. Each liquid crystal molecule set includes a liquid crystal molecule group, and the liquid crystal molecule group includes a plurality of liquid crystal molecules arranged in a line. The line includes a plurality of segments, and the orientation vector direction of the liquid crystal molecules arranged in each segment in the liquid crystal molecule group is consistent with the extension direction of the segment. The number of liquid crystal molecule groups in the liquid crystal molecule set is at least one, and the extension directions of at least two segments in the above-mentioned line are different; or the number of liquid crystal molecule groups is a plurality, and the extension directions of the lines in which the liquid crystal molecules in at least two liquid crystal molecule groups are arranged are different.

[0008] When the depolarization film is applied to the display module of the electronic device, the image light emitted by the display panel is natural light, which is converted into polarized light after passing through the polarizing layer. The polarized light will rotate under the action of the liquid crystal molecules in the liquid crystal layer after passing through the depolarization film. The rotation angle is the included angle between the polarization direction of the polarized light and the director direction of the liquid crystal molecules in the segment. Since the director directions of the liquid crystal molecules arranged in the at least two segments in the line arranged by the liquid crystal molecules in the liquid crystal molecule group are different, or the director directions of the liquid crystal molecules in the at least two liquid crystal molecule groups are different, the polarized light can produce rotation at at least two different angles. The mixed outgoing light obtained by rotation can make the light tend to be natural light, thereby achieving a certain degree of depolarization effect.

[0009] Optionally, the line arranged by the liquid crystal molecules in the liquid crystal molecule group is a closed line with a first end connected to a second end, and the closed line includes a plurality of segments, and the extension directions of at least two segments in the plurality of segments are different. In this way, the tilt angle of the director directions of the liquid crystal molecules arranged in the plurality of segments in the closed line is distributed in the range of 0°-360°, and the rotation of the polarized light at different angles in the range of 0°-360° can be realized.

[0010] Optionally, the number of the liquid crystal molecule groups in the liquid crystal molecule set is a plurality, and the line arranged by the liquid crystal molecules in each liquid crystal molecule group is a closed line with a first end connected to a second end, and the plurality of closed lines are sequentially nested along the plane where the liquid crystal layer is located. In this way, the liquid crystal molecule set occupies a larger area in the liquid crystal layer, which can improve the depolarization efficiency and also realize the rotation of the polarized light at different angles in a larger angle range, thereby improving the natural light conversion efficiency and ensuring the depolarization effect.

[0011] Optionally, the line arranged by the liquid crystal molecules in the liquid crystal molecule group is a circular line, an elliptical line, a quadrilateral line, a triangular line, a pentagonal line, or a heart-shaped line. When the line arranged by the liquid crystal molecules in the liquid crystal molecule group is a circular line or an elliptical line, the tilt angles of the director directions of the liquid crystal molecules arranged in the plurality of segments in the circular line or the elliptical line are continuously distributed in the range of 0°-360°, and the rotation of the polarized light at continuous angles in the range of 0°-360° can be realized, thereby improving the depolarization effect.

[0012] Optionally, the lines arranged by the liquid crystal molecules in each group of liquid crystal molecules are circular lines, and the plurality of circular lines are concentrically arranged. In this way, the uniformity of the distribution of the plurality of groups of liquid crystal molecules in the set of liquid crystal molecules is better, and the depolarization efficiency can be improved.

[0013] Optionally, the number of groups of liquid crystal molecules in the set of liquid crystal molecules is a plurality, and the plurality of groups of liquid crystal molecules include a first group of liquid crystal molecules and a second group of liquid crystal molecules. The lines arranged by the liquid crystal molecules in the first group of liquid crystal molecules are straight lines, the lines arranged by the liquid crystal molecules in the second group of liquid crystal molecules are straight lines, the extension directions of the lines arranged by the liquid crystal molecules in the first group of liquid crystal molecules are different from the extension directions of the lines arranged by the liquid crystal molecules in the second group of liquid crystal molecules, and the lines arranged by the liquid crystal molecules in the first group of liquid crystal molecules intersect the lines arranged by the liquid crystal molecules in the second group of liquid crystal molecules. This structure is simple and easy to implement.

[0014] Optionally, the number of groups of liquid crystal molecules in the set of liquid crystal molecules is a plurality. The plurality of groups of liquid crystal molecules include a plurality of third groups of liquid crystal molecules. The lines arranged by the liquid crystal molecules in each third group of liquid crystal molecules are circular arc lines, the circular arc lines include a plurality of segments, the extension directions of at least two segments of the plurality of segments are different, and the plurality of third groups of liquid crystal molecules are arranged along the radial direction of the circular arc lines in sequence. In this way, the set of liquid crystal molecules occupies a larger area in the liquid crystal layer, which can also improve the depolarization efficiency and enable the polarized light to rotate at different angles within a larger angle range, thereby improving the natural light conversion efficiency and ensuring the depolarization effect.

[0015] Optionally, the thickness d of the depolarization film satisfies: d = (N x λ) / (2 x Δn). Wherein, N is an odd number; λ is a wavelength, λ is greater than or equal to 380 nm and less than or equal to 780 nm; Δn is the birefringence of the depolarization film. That is, the depolarization film is a 1 / 2 wavelength film. In this way, the incident light produces an optical path difference δ after passing through the depolarization film, δ = Δnd = (N x λ) / 2, that is, a phase difference Δφ is produced, Δφ = 2πδ / λ = Nπ, so that the outgoing light is still linearly polarized light, which can be mixed to form natural light.

[0016] Optionally, λ is greater than or equal to 450 nm and less than or equal to 650 nm, that is, between the center wavelength of blue light and the center wavelength of red light. In this way, the depolarization effect on the light emitted by the first color light source, the second color light source and the third color light source in each pixel unit of the display panel can be targeted, and the depolarization effect is better.

[0017] Optionally, λ is equal to 450 nm, 550 nm or 650 nm, i.e. equal to the central wavelength of blue light, the central wavelength of green light or the central wavelength of red light. In this way, the light emitted by the first color light source, the second color light source and the third color light source can be further specifically subjected to the depolarization effect, and the depolarization effect is better.

[0018] Optionally, the thickness of the depolarization film is greater than or equal to 0.3 μm and less than or equal to 3 μm. When the thickness of the depolarization film is in this range, the thickness is moderate, which can ensure the structural strength, reduce the assembly difficulty, and at the same time avoid excessive influence on the thinness of the electronic device.

[0019] Optionally, the birefringence of the depolarization film is greater than or equal to 0.05 and less than or equal to 0.45. When the birefringence of the depolarization film is in this range, the thickness of the depolarization film can be reduced, which is beneficial to the thinness of the whole machine.

[0020] Optionally, the array spacing of the plurality of liquid crystal molecule sets is greater than or equal to 40 μm and less than or equal to 100 μm. When the array spacing is in this range, the size of the array spacing is moderate, which can take into account the processing difficulty of the depolarization film and the depolarization effect at the same time.

[0021] Optionally, in the plurality of liquid crystal molecule sets, the shapes and / or sizes of the lines in which the liquid crystal molecules in the liquid crystal molecule groups are arranged can be the same. In this way, the processing difficulty of the depolarization film can be reduced.

[0022] Optionally, the depolarization film further comprises an optical base film, and the liquid crystal layer is arranged on the optical base film. The surface of the optical base film facing the liquid crystal layer is arrayed with a plurality of groove sets; the number of the plurality of groove sets corresponds to the plurality of liquid crystal molecule sets one by one along the thickness direction of the depolarization film; and the groove set comprises at least one linear groove, and the number of the linear grooves in the groove set is equal to the number of the liquid crystal molecule groups in the corresponding liquid crystal molecule set and corresponds to the liquid crystal molecule groups one by one along the thickness direction of the depolarization film. In this way, the plurality of groove sets on the optical base film can be used to orient the liquid crystal molecules in the liquid crystal layer to form the plurality of liquid crystal molecule sets. This processing method is simple and easy to implement.

[0023] Optionally, the optical base film comprises an optical base layer and a photoresist layer arranged on the surface of the optical base layer facing the liquid crystal layer, and the plurality of groove sets are arranged on the photoresist layer. The plurality of groove sets can be formed on the photoresist layer by photolithography technology, and this processing method is simple and easy to operate.

[0024] In a second aspect, a display module is provided, which comprises a display panel, a polarizing layer and the depolarization film according to any one of the technical solutions above. The polarizing layer is arranged on the light-emitting side of the display panel and is laminated with the display panel. The depolarization film is arranged on the side of the polarizing layer facing away from the display panel and is laminated with the polarizing layer.

[0025] The image light emitted by the display panel is natural light, and the natural light is converted into linearly polarized light after passing through the polarizing layer. After passing through the depolarization film, the linearly polarized light will rotate under the action of the liquid crystal molecules in the liquid crystal layer. The rotation angle is twice the included angle between the polarization direction of the polarized light and the director direction of the liquid crystal molecules. Because the director directions of the liquid crystal molecules arranged in the segments in the liquid crystal molecule group are consistent with the extension directions of the segments, and the number of the liquid crystal molecule groups in the liquid crystal molecule collection is at least one, the extension directions of at least two segments in the line in which the liquid crystal molecules are arranged in the liquid crystal molecule group are different; or the number of the liquid crystal molecule groups is multiple, and the extension directions of the lines in which the liquid crystal molecules are arranged in at least two liquid crystal molecule groups are different, so that the director directions of the liquid crystal molecules arranged in at least two segments in the liquid crystal molecule group are different, or the director directions of the liquid crystal molecules in at least two liquid crystal molecule groups are different, so that the director directions of the liquid crystal molecules arranged in at least two segments in the liquid crystal molecule group are different, or the director directions of the liquid crystal molecules in at least two liquid crystal molecule groups are different. Therefore, the polarized light can produce rotation of at least two different angles, the mixed outgoing light obtained by rotation can make the light tend to be closer to natural light, and thus a certain degree of depolarization effect can be achieved, and the user's comfort in feeling the image light can be improved.

[0026] The third aspect further provides an electronic device including a housing, a circuit board and the display module according to any one of the second aspect. The circuit board is arranged in the housing. The display module is connected with the housing, and the display module is electrically connected with the circuit board.

[0027] Because the electronic device provided in the present application includes the display module according to any one of the second aspect, the electronic device and the display module can solve the same technical problems and achieve the same effects.

[0028] The fourth aspect further provides a processing method of a depolarization film, and the processing method includes:

[0029] The liquid crystal molecules in the liquid crystal layer are oriented to form a plurality of liquid crystal molecule groups.

[0030] The liquid crystal molecule set comprises a liquid crystal molecule group, and the liquid crystal molecule group comprises a plurality of liquid crystal molecules arranged along a line. The line comprises a plurality of sections. In the liquid crystal molecule group, the orientation vector direction of the liquid crystal molecules arranged in the sections is consistent with the extension direction of the sections. The number of the liquid crystal molecule groups in the liquid crystal molecule set is at least one. In the liquid crystal molecule group, the extension directions of at least two sections in the line in which the liquid crystal molecules are arranged are different. Alternatively, the number of the liquid crystal molecule groups in the liquid crystal molecule set is a plurality. In the plurality of liquid crystal molecule groups, the extension directions of the lines in which the liquid crystal molecules arranged in at least two liquid crystal molecule groups are different. In this way, the orientation vector directions of the liquid crystal molecules arranged in at least two sections in the liquid crystal molecule group are different, or the orientation vector directions of the liquid crystal molecules in at least two liquid crystal molecule groups are different.

[0031] When the depolarization film processed by the above processing method is applied to a display module of an electronic device, the image light emitted by the display panel is natural light. After passing through the polarizing layer, the natural light is converted into polarized light. After passing through the depolarization film, the polarized light will rotate under the action of the liquid crystal molecules in the liquid crystal layer. The rotation angle is the included angle between the polarization direction of the polarized light and the orientation vector direction of the liquid crystal molecules in the liquid crystal section. Because the orientation vector directions of the liquid crystal molecules arranged in at least two sections in the liquid crystal molecule group are different, or the orientation vector directions of the liquid crystal molecules in at least two liquid crystal molecule groups are different, the polarized light can produce at least two different angles of rotation. The mixed outgoing light obtained by rotation makes the light tend to be closer to natural light, thereby achieving a certain degree of depolarization effect.

[0032] Optionally, the orientation of the plurality of partial liquid crystal molecules arranged in an array along the plane in which the liquid crystal layer is located comprises:

[0033] An optical base film is provided.

[0034] A plurality of groove sets are arranged in an array on the optical base film. The groove set comprises a linear groove. The number of the linear grooves is at least one. The extension directions of at least two groove sections of the linear groove are different. Alternatively, the number of the linear grooves in the groove set is a plurality. The extension directions of at least two linear grooves in the plurality of linear grooves are different.

[0035] A liquid crystal layer in a liquid state is arranged on the surface of the optical base film on which the plurality of groove sets are arranged. The groove set is used to orient the liquid crystal molecules in the liquid crystal layer, so that the orientation vector direction of the liquid crystal molecules corresponding to each groove section of the linear groove in the groove set is consistent with the extension direction of the groove section.

[0036] The liquid crystal layer is subjected to a curing treatment.

[0037] In this way, the groove set on the optical base film is used to orient the liquid crystal molecules in the liquid crystal layer to form a plurality of liquid crystal molecule sets. This method is simple and easy to implement.

[0038] Optionally, the optical base film comprises an optical base layer and a photoresist layer disposed on the optical base layer. The number of linear grooves in the groove pattern can be multiple, each linear groove extending along a closed curve that is connected head to tail, and the multiple linear grooves are sequentially nested along the plane in which the optical base film is located. The multiple groove sets are arrayed on the optical base film, comprising:

[0039] The interferometer is used to form multiple interference fringes in the photoresist layer, the interference fringes comprising bright fringes and dark fringes that are sequentially and alternately nested along the plane in which the photoresist layer is located, one of the bright fringes and the dark fringes causing part of the photoresist in the irradiation area to be in a solid state, and the other causing part of the photoresist in the irradiation area to be in a liquid state;

[0040] The liquid part in the photoresist layer is removed to form the multiple groove sets.

[0041] This method is simple and easy to implement.

[0042] Optionally, the material of the photoresist layer is negative photoresist, the bright fringes in the concentric interference fringes cause part of the photoresist in the irradiation area to be in a solid state, and the dark fringes cause part of the photoresist in the irradiation area to be in a liquid state; or the material of the photoresist layer is positive photoresist, the bright fringes in the concentric interference fringes cause part of the photoresist in the irradiation area to be in a liquid state, and the dark fringes cause part of the photoresist in the irradiation area to be in a solid state. BRIEF DESCRIPTION OF DRAWINGS

[0043] FIG. 1 is a perspective view of an electronic device according to some embodiments of the present application;

[0044] FIG. 2 is an exploded structural schematic view of the electronic device shown in FIG. 1;

[0045] FIG. 3 is a structural schematic view of a display module in a screen according to some embodiments of the present application;

[0046] FIG. 4 is a schematic view of the morphological changes of light after passing through each structural layer in the display module shown in FIG. 3;

[0047] FIG. 5 is a schematic view of the morphological changes of light after passing through each structural layer in a display module according to some other embodiments of the present application;

[0048] FIG. 6 is a cross-sectional structural schematic view of a depolarization film according to the related art;

[0049] FIG. 7 is a top view of the depolarization film shown in FIG. 6;

[0050] FIG. 8 is a schematic view of the direction of the director of liquid crystal molecules corresponding to region I in the depolarization film shown in FIG. 7;

[0051] FIG. 9 is a top view of a depolarization film according to some embodiments of the present application;

[0052] FIG. 10 is a partial enlarged view of region II of the depolarizing film shown in FIG. 9;

[0053] FIG. 11 is an exploded structural schematic view of the depolarizing film shown in FIGS. 9 and 10 when applied to a display module;

[0054] FIG. 12 is a diagram of the orientation relationship between the liquid crystal molecule collection and the incident light in the depolarizing film shown in FIG. 10;

[0055] FIG. 13 is a diagram of the orientation relationship between the incident light and the emitted light of the liquid crystal molecules arranged in the A segment, the liquid crystal molecules arranged in the B segment, and the liquid crystal molecules arranged in the C segment in the liquid crystal molecule collection shown in FIG. 12;

[0056] FIG. 14a is a structural schematic view of a liquid crystal molecule collection in a depolarizing film according to some embodiments of the present application;

[0057] FIG. 14b is a structural schematic view of a liquid crystal molecule collection in a depolarizing film according to some embodiments of the present application;

[0058] FIG. 14c is a structural schematic view of a liquid crystal molecule collection in a depolarizing film according to some embodiments of the present application;

[0059] FIG. 15 is a structural schematic view of a cross section of the depolarizing film shown in FIG. 10 along the A-A direction;

[0060] FIG. 16 is a top view of the first surface of the optical base film in the depolarizing film shown in FIG. 15;

[0061] FIG. 17 is a partial enlarged view of the groove collection in region III of the optical base film shown in FIG. 16;

[0062] FIG. 18 is a structural schematic view of a cross section of the optical base film shown in FIG. 17 along the B-B direction;

[0063] FIG. 19 is a structural schematic view of a groove collection in a depolarizing film according to some embodiments of the present application;

[0064] FIG. 20 is a structural schematic view of a cross section of a depolarizing film according to some embodiments of the present application;

[0065] FIG. 21 is a structural schematic view of a cross section of a depolarizing film according to some embodiments of the present application;

[0066] FIG. 22 is a structural schematic view of a display module according to some embodiments of the present application;

[0067] FIG. 23 is a structural schematic view of a display module according to some embodiments of the present application;

[0068] FIG. 24 is a structural schematic view of a display module according to some embodiments of the present application;

[0069] FIG. 25 is a structural schematic view of a display module according to some embodiments of the present application;

[0070] FIG. 26 is a structural schematic diagram of a display module according to some embodiments of the present application;

[0071] FIG. 27 is a structural schematic diagram of a display module according to some embodiments of the present application;

[0072] FIG. 28 is a flowchart of a processing method of a depolarization film according to some embodiments of the present application;

[0073] FIG. 29 is a structural schematic diagram of a processing method of a depolarization film according to some embodiments of the present application;

[0074] FIG. 30 is a top view of an optical base film according to some embodiments of the present application;

[0075] FIG. 31 is a flowchart of step S20 of a processing method of a depolarization film according to some embodiments of the present application.

[0076] Reference signs: 100, electronic device; 10, screen; 20, housing; 30, circuit board; 201, middle frame; 2011, frame; 2012, middle plate; 202, back cover; 101, display panel; 102, polarizing layer; 103, light-transmitting cover plate; 104, protective film; 106, support layer; 105, depolarization film; 01, first substrate; 02, second substrate; 03, liquid crystal layer; 04, light control alignment film; 05, light control alignment film; 1, optical base film; 11, optical base layer; 12, photoresist layer; 2, liquid crystal layer; 21, liquid crystal molecule set; 21a, liquid crystal molecule set; 21a1, first liquid crystal molecule set; 21a2, second liquid crystal molecule set; 21a3, third liquid crystal molecule set; m, liquid crystal molecule; A, line segment; B, line segment; C, line segment; 3, groove set; 3, linear groove; a, first groove segment; b, second groove segment; c, third groove segment; N, natural light; P, polarized light; D, array pitch of multiple liquid crystal molecule sets. DETAILED DESCRIPTION

[0077] In the embodiments of the present application, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0078] In the embodiments of the present application, the terms "comprising", "containing" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements not only includes those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0079] In the embodiments of the present application, "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0080] The present application provides an electronic device, which is a kind of electronic device with display function. For example, the electronic device can be user equipment (UE) or terminal device, etc., for example, the electronic device can be a portable android device (PAD), a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. Mobile terminal or fixed terminal. The present application is exemplarily illustrated by taking the electronic device as a handheld device with wireless communication function, which can be a mobile phone, for example.

[0081] Please refer to FIG. 1 and FIG. 2, FIG. 1 is a perspective view of an electronic device 100 provided by some embodiments of the present application, and FIG. 2 is an exploded structural schematic view of the electronic device 100 shown in FIG. 1. In the present embodiment, the electronic device 100 is in the shape of a rectangular flat plate. Based on this, in order to facilitate the description of each of the embodiments below, an XYZ coordinate system is established, and the length direction of the electronic device 100 is defined as the Y-axis direction, the width direction of the electronic device 100 is defined as the X-axis direction, and the thickness direction of the electronic device 100 is defined as the Z-axis direction. It can be understood that the coordinate system setting of the electronic device 100 can be flexibly set according to actual needs, and the present application does not make specific limitations in this regard. In some other embodiments, the shape of the electronic device 100 can also be a square flat plate, a circular flat plate, an elliptical flat plate, and the like.

[0082] The electronic device 100 can include a screen 10, a housing 20, and a circuit board 30. It can be understood that FIG. 1 and FIG. 2 exemplarily show some components included in the electronic device 100, and the actual shape, actual size, actual position, and actual structure of these components are not limited by FIG. 1 and FIG. 2, and the electronic device 100 can include other components such as a battery, a camera module, a speaker module, a vibration motor, and the like in addition to these components, and the present application does not make specific limitations in this regard.

[0083] The housing 20 is connected with the screen 10 to support and protect the screen 10. The material of the housing 20 can include metals such as stainless steel, aluminum alloy, titanium alloy, and the like, can also include resins such as polycarbonate, polyphenylene sulfide, polyamide, polyphthalamide, polyphenylene sulfone resin, and polyether ether ketone, and the like, and can also include ceramics or glass, and the present application does not make specific limitations in this regard. The housing 20 has a receiving space inside, and the circuit board 30 is received in the receiving space, and the receiving space can also receive electronic components such as a battery 40, a speaker module, a camera module, a vibration motor, and the like, and the present application does not make specific limitations in this regard.

[0084] In some embodiments, please refer to FIG. 2, the housing 20 can include a middle frame 201 and a back cover 202. The middle frame 201 is arranged between the screen 10 and the back cover 202. The middle frame 201 can at least include a frame 2011, and the screen 10 and the back cover 202 can be bonded to the frame 2011. In other embodiments, the screen 10 can be bonded to the frame 2011, and the back cover 202 and the frame 2011 can be integrally formed, that is, the back cover 202 and the frame 2011 are a whole structural member, and the present application does not make specific limitations in this regard.

[0085] In some embodiments, referring to FIG. 2, the middle frame 201 can further include a middle plate 2012. The middle plate 2012 is located between the screen 10 and the back cover 202. The middle plate 2012 is located in the area surrounded by the frame 2011 and is fixed with the frame 2011. The middle plate 2012, the frame 2011 and the back cover 202 can form the above-mentioned accommodation space of the shell 20. In other embodiments, the middle frame 201 can also not be provided with the middle plate 2012. In this way, the above-mentioned accommodation space of the shell 20 is formed between the screen 10, the frame 2011 and the back cover 202, which is not limited in the present application.

[0086] The circuit board 30 can be a main circuit board carrying a main controller, or a secondary circuit board carrying other electronic components, which is not limited in the present application. Moreover, the circuit board 30 can be a hard board, a soft board or a combination of soft and hard circuit board, which is not limited in the present application. The circuit board 30 is electrically connected with the screen 10 to transmit pixel data information to the screen 10.

[0087] The screen 10 is used to display videos, images, etc., and can also be used to identify fingerprints or control gestures, etc. Based on this, the screen 10 can include a display module, a fingerprint identification module and a touch module, etc. The following embodiments mainly describe the structure of the display module, and the structure of the fingerprint identification module and the touch module can adopt the existing structure, which is not described in detail in the present application.

[0088] Referring to FIG. 3, FIG. 3 is a structural schematic diagram of a display module in a screen 10 provided by some embodiments of the present application. The display module can at least include a display panel 101 and a polarizing layer 102 arranged in a stack. The display panel 101 is the main body for displaying videos and images. The display panel 101 can be a flexible display panel, or a rigid display panel, or a part of the display panel is a flexible display panel and the other part is a rigid display panel. For example, the display panel 101 can be an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini light-emitting diode display panel, a micro light-emitting diode display panel, a micro organic light-emitting diode display panel, a quantum dot light-emitting diode (QLED) display panel, or a liquid crystal display (LCD).

[0089] The display panel 101 includes a display area, which is an area of the display panel 101 for displaying images and videos, and the display area is arranged with an array of pixel units. The larger the size of the display panel 101, the more array of pixel units arranged in the display area. The smaller the size of the display panel 101, the less array of pixel units arranged in the display area. Each pixel unit can include a first color light source, a second color light source, and a third color light source. The light emitted by the first color light source, the light emitted by the second color light source, and the light emitted by the third color light source are all natural light, and the three kinds of natural light superimpose on each other to obtain light of different colors, thereby realizing the display of videos or images.

[0090] In some embodiments, the light emitted by the first color light source, the light emitted by the second color light source, and the light emitted by the third color light source can be red light, green light, and blue light, respectively, or magenta light, yellow light, and cyan light. The present application is exemplarily described by taking the light emitted by the first color light source, the light emitted by the second color light source, and the light emitted by the third color light source as red light, green light, and blue light, respectively, which cannot be considered as a special limitation to the present application. The wavelength range of red light is 622nm-760nm. The wavelength range of green light is 492nm-577nm. The wavelength range of blue light is 435nm-450nm.

[0091] Referring to FIG. 3, the polarizing layer 102 is located on the light-out side of the display panel 101, i.e., the side of the display panel 101 on which a video or an image is displayed. The polarizing layer 102 can be a linear polarizing layer, which is used to reduce reflection, suppress glare, improve contrast, and protect privacy, so as to improve the visibility and comfort of the screen in various environments.

[0092] In some embodiments, referring to FIG. 3, the display module further includes a light-transmitting cover plate 103. The light-transmitting cover plate 103 is located on the side of the polarizing layer 102 opposite to the display panel 101, and is stacked with the polarizing layer 102. The light-transmitting cover plate 103 is used to protect the polarizing layer 102 and the display panel 101. The material of the light-transmitting cover plate 103 includes, but is not limited to, at least one of glass, acrylic, transparent polyimide, polyethylene terephthalate, and sapphire.

[0093] In some embodiments, referring to FIG. 3, the display module further includes a protective film 104. The protective film 104 is located on the side of the light-transmitting cover plate 103 opposite to the polarizing layer 102, and is stacked with the light-transmitting cover plate 103. The protective film 104 is used to protect the light-transmitting cover plate 103 from scratching, shattering, water, and oil, or to improve the display clarity. The protective film 104 includes, but is not limited to, at least one of a polyethylene (PE) protective film, a polypropylene (PP) protective film, a polyvinyl chloride (PVC) protective film, a polyethylene terephthalate (PET) protective film, an AR material protective film, a tempered film, a water-based film, and a high-definition film.

[0094] It should be noted that, in addition to the display panel 101, the polarizing layer 102, the light-transmitting cover plate 103, and the protective film 104, the display module can further include other structural layers, such as a support layer 106, a buffer layer, an adhesive layer, a shielding layer, and the like, which are not limited in the present application. The support layer 106 is located on the side of the display panel 101 opposite to the polarizing layer 102.

[0095] Please refer to FIG. 4, which is a schematic diagram of the change of the light after passing through each structure layer in the display module shown in FIG. 3. The natural light N emitted by the display panel 101 is converted into linearly polarized light P with a polarization degree of 99% after passing through the polarizing layer 102 (the transmission axis is L). The light-transmitting cover plate 103 and the protective film 104 do not change the polarization state of the polarized light P. The linearly polarized light P is emitted from the display module and enters the user's eyes. The stimulation of the user's photoreceptor cells is anisotropic. The user's photoreceptor cells are more comfortable to isotropic natural light. Therefore, the image light emitted by the display module cannot meet the comfort needs of the user.

[0096] In order to convert the polarized light emitted by the display module into natural light, please refer to FIG. 5, which is a schematic diagram of the change of the light after passing through each structure layer in the display module provided by some embodiments of the present application. The display module can further include a depolarization film 105. The depolarization film 105 is located on the side of the polarizing layer 102 opposite to the display panel 101, and is stacked with the polarizing layer 102 and the display panel 101. Optionally, please refer to FIG. 5, the depolarization film 105 can be arranged between the polarizing layer 102 and the light-transmitting cover plate 103. In this way, the light-transmitting cover plate 103 can be used to protect the depolarization film 105.

[0097] Referring to FIG. 6, which is a schematic diagram of a cross-section structure of a related art depolarization film 105. The depolarization film 105 is a 1 / 2 wave film. The depolarization film 105 can include a first substrate 01 and a second substrate 02 arranged oppositely, and a liquid crystal layer 03 arranged between the first substrate 01 and the second substrate 02. A surface of the first substrate 01 facing the liquid crystal layer 03 is provided with a photo-alignment film 04, and a surface of the second substrate 02 facing the liquid crystal layer 03 is provided with a photo-alignment film 05. The photo-alignment film 04 and the photo-alignment film 05 each have a plurality of micro-patterns with different molecular director directions. For example, referring to FIG. 7, which is a top view of the depolarization film 105 shown in FIG. 6. In FIG. 7, the molecular director directions of the micro-patterns are represented by brightness. The micro-patterns can be divided into 18 groups, and the 18 groups of micro-patterns represent a constant difference series of the molecular director directions from 0° to 170° with a tolerance of 10° from dark to bright. Each group of micro-patterns includes a plurality of randomly distributed micro-regions, and the micro-regions in the same group of micro-patterns have the same molecular director direction. The plurality of micro-patterns with different molecular director directions are spliced with each other to form a working area of the photo-alignment film. The plurality of micro-patterns with different molecular director directions in the photo-alignment film can control the random distribution of the liquid crystal molecules in the liquid crystal layer 03. Referring to FIG. 8, which is a schematic diagram of the liquid crystal molecular director directions corresponding to the region I in the depolarization film 105 shown in FIG. 7. The liquid crystal molecular director directions are the same as the molecular director directions of the photo-alignment film of the corresponding micro-patterns. Thus, referring back to FIG. 5, the polarized light P irradiated on the depolarization film 105 can be converted into polarized light with different vibration directions under the turning action of the liquid crystal molecules in different micro-regions, and the polarized light with different vibration directions are combined to form non-polarized light (i.e. natural light), thereby achieving the depolarization effect.

[0098] However, due to the limitation of processing difficulty, the size of the micro-patterns in the photo-alignment film cannot be reduced indefinitely, for example, the length x width of the micro-patterns can be 58 μm x 58 μm. Moreover, since a plurality of micro-regions are needed to achieve the vibration direction conversion from 0° to 170°, the natural light conversion efficiency of the depolarization film 105 is relatively low. Especially for small-size display modules, since the area of the depolarization film 105 is small, the number of groups of micro-patterns arranged in the photo-alignment film and / or the number of micro-patterns in each group of micro-patterns are small, which leads to a lower natural light conversion efficiency and a poor depolarization effect.

[0099] To solve the above problems, please refer to FIG. 9, which is a top view of the depolarization film 105 provided by some embodiments of the present application. The shape of the depolarization film 105 can be rectangular, circular, square, oval, triangular, etc. The present application is exemplarily described by taking the shape of the depolarization film 105 as rectangular. The long side of the depolarization film 105 can be parallel to the Y axis, and the short side can be parallel to the X axis. Of course, in other embodiments, the long side of the depolarization film 105 can also be parallel to the X axis, and the short side of the depolarization film 105 can also be parallel to the Y axis, which is not specifically limited herein.

[0100] The depolarization film 105 can include a liquid crystal layer 2. The material of the liquid crystal layer 2 is a material including liquid crystal molecules. Optionally, the material of the liquid crystal layer 2 can be selected as liquid crystal polymer. The liquid crystal layer 2 is a light-transmitting structure. In some embodiments, the light transmittance of the liquid crystal layer 2 can be greater than or equal to 95%.

[0101] The liquid crystal layer 2 includes a plurality of liquid crystal molecule sets 21 arranged in an array along the plane in which the liquid crystal layer 2 is located.

[0102] The plane in which the liquid crystal layer 2 is located refers to the plane in which the liquid crystal layer 2 is located after the liquid crystal layer 2 is equivalent to a planar structure by ignoring the thickness of the liquid crystal layer 2.

[0103] Please refer to FIG. 10, which is a partial enlarged view of the region II of the depolarization film 105 shown in FIG. 9. The liquid crystal molecule set 21 includes a liquid crystal molecule group 21a. The liquid crystal molecule group 21a includes a plurality of liquid crystal molecules m arranged in a line. The line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged can be a circular line, an oval line, a quadrilateral line, a triangular line, a pentagonal line, a heart-shaped line, an arc-shaped line, or a straight line. FIG. 10 is exemplarily described by taking the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged as a circular line. In FIG. 10, the lines in which the liquid crystal molecules m in the three liquid crystal molecule groups 21a are arranged are line k1, line k2, and line k3, respectively.

[0104] The line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged includes a plurality of segments. In the liquid crystal molecule group 21a, the orientation vector direction of the liquid crystal molecules m arranged in a segment is consistent with the extension direction of the segment. For example, please refer to FIG. 10, which is described by taking the liquid crystal molecule group 21a in which the liquid crystal molecules m are arranged in the line k1 as an example. In the liquid crystal molecule group 21a, the orientation vector direction n1 of the liquid crystal molecules arranged in the A segment of the line k1 is consistent with the extension direction of the A segment; the orientation vector direction n2 of the liquid crystal molecules arranged in the B segment of the line k1 is consistent with the extension direction of the B segment; and the orientation vector direction n3 of the liquid crystal molecules arranged in the C segment of the line k1 is consistent with the extension direction of the C segment.

[0105] Optionally, the length of each section of the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged can be in the range of (0 μm, 100 μm], and optionally, the length of each section of the line can be selected to be 50 μm, 40 μm, 20 μm, 10 μm, 5 μm, 4 μm, 3 μm, 2 μm, or 1 μm or less, which is not limited in the present application.

[0106] The number of liquid crystal molecules m arranged in each section of the line in the liquid crystal molecule group 21a can be one or more. When the number of liquid crystal molecules m arranged in each section of the line is one, the direction of the director of the liquid crystal molecules arranged in the section refers to the direction of the one liquid crystal molecule. When the number of liquid crystal molecules m arranged in each section of the line is more than one, the direction of the director of the liquid crystal molecules m arranged in the section refers to the average direction of the directions of the more than one liquid crystal molecules. The direction of the liquid crystal molecules refers to the direction of the long axis of the liquid crystal molecules.

[0107] The extension path of each section of the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged can be a straight line or a curve. When the extension path of the section is a straight line, the extension direction of the section refers to the length direction of the extension path of the section. When the extension path of the section is a curve, the extension direction of the section refers to the tangent direction of the extension path of the section.

[0108] It should be noted that the above embodiments describe that the direction of the director of the liquid crystal molecules m arranged in each section of the line in the liquid crystal molecule group 21a is consistent with the extension direction of the section, which is not limited to absolute consistency, but refers to general consistency with a certain deviation angle, which can be less than or equal to 30°.

[0109] On the basis of any of the above embodiments, the number of liquid crystal molecule groups 21a in the liquid crystal molecule set 21 is at least one, and the number of liquid crystal molecule groups 21a in the liquid crystal molecule set 21 can be one or more. FIG. 10 exemplarily illustrates that the number of liquid crystal molecule groups 21a is three, and the extension directions of at least two sections of the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged are different. Alternatively, the number of liquid crystal molecule groups 21a in the liquid crystal molecule set 21 is more than one, and in the more than one liquid crystal molecule groups 21a, the extension directions of the lines in which the liquid crystal molecules m are arranged in at least two liquid crystal molecule groups 21a are different. In this way, the directions of the directors of the liquid crystal molecules arranged in at least two sections in the liquid crystal molecule group 21a are different, or the directions of the directors of the liquid crystal molecules in at least two liquid crystal molecule groups 21a are different.

[0110] For example, referring to FIG. 10, the liquid crystal molecules arranged in the section A of the line k1 have a different director direction n1 than the liquid crystal molecules arranged in the section B of the line k1 and the liquid crystal molecules arranged in the section C of the line k1 have a different director direction n3 than the liquid crystal molecules arranged in the section B of the line k1.

[0111] Thus, when the depolarization film 105 is applied to the display module of the electronic device 100, referring to FIG. 11, which is a schematic diagram of the exploded structure of the depolarization film 105 shown in FIGS. 9 and 10 when applied to the display module, the image light emitted by the display panel 101 is natural light N, and the natural light N is converted into polarized light P after passing through the polarizing layer 102 (the transmission axis is L). The polarized light P undergoes a rotation of 2θ after passing through the depolarization film 105 under the action of the liquid crystal molecules in the liquid crystal layer 2. Here, θ is the angle between the polarization direction of the polarized light P (i.e., the transmission axis L of the polarizing layer 102) and the director direction n of the liquid crystal molecules. Since the director directions of the liquid crystal molecules arranged in at least two sections in the liquid crystal molecule group 21a are different, or the director directions of the liquid crystal molecules in at least two liquid crystal molecule groups 21a are different, the polarized light P can be caused to undergo a rotation of at least two different angles, and the mixed light obtained by the rotation makes the light tend to be closer to natural light, thereby achieving a certain degree of depolarization effect.

[0112] For example, referring to FIG. 12 and FIG. 13, FIG. 12 is a diagram showing the positional relationship between the liquid crystal molecule set 21 in the depolarization film 105 shown in FIG. 10 and the incident light (i.e., the polarized light P), and FIG. 13 is a diagram showing the positional relationship between the incident light and the emergent light of the liquid crystal molecules arranged in the A section, the liquid crystal molecules arranged in the B section, and the liquid crystal molecules arranged in the C section in the liquid crystal molecule set 21 shown in FIG. 12. In FIG. 13, (a) is a diagram showing the positional relationship between the incident light and the emergent light of the liquid crystal molecules arranged in the A section, (b) is a diagram showing the positional relationship between the incident light and the emergent light of the liquid crystal molecules arranged in the B section, and (c) is a diagram showing the positional relationship between the incident light and the emergent light of the liquid crystal molecules arranged in the C section. The polarization direction of the incident light 1 of the liquid crystal molecules arranged in the A section, the polarization direction of the incident light 2 of the liquid crystal molecules arranged in the B section, and the polarization direction of the incident light 3 of the liquid crystal molecules arranged in the C section are the same, and are all the aforementioned polarized light P. The polarization direction of the incident light 1 is rotated by 2θ1 under the action of the liquid crystal molecules arranged in the A section, to form the emergent light 1. Here, θ1 is the included angle between the polarization direction of the incident light 1 and the director direction n1 of the liquid crystal molecules arranged in the A section. The polarization direction of the incident light 2 is rotated by 2θ2 under the action of the liquid crystal molecules arranged in the B section, to form the emergent light 2. Here, θ2 is the included angle between the polarization direction of the incident light 2 and the director direction n2 of the liquid crystal molecules arranged in the B section. The polarization direction of the incident light 3 is rotated by 2θ3 under the action of the liquid crystal molecules arranged in the C section, to form the emergent light 3. Here, θ3 is the included angle between the polarization direction of the incident light 3 and the director direction n3 of the liquid crystal molecules arranged in the C section. Since the director direction n1 of the liquid crystal molecules arranged in the A section, the director direction n2 of the liquid crystal molecules arranged in the B section, and the director direction n3 of the liquid crystal molecules arranged in the C section are different, the polarization directions of the emergent light 1, the emergent light 2, and the emergent light 3 are different. The emergent light with different polarization directions is mixed to form natural light, and the depolarization effect can be achieved.

[0113] Moreover, each liquid crystal molecule set 21 can achieve a certain depolarization effect. Therefore, compared with the depolarization film 105 provided by the related art shown in FIG. 6, under the premise that the size of the liquid crystal molecule set 21 is the same as the size of the micro region pattern in the related art shown in FIG. 6, the natural light conversion efficiency of the depolarization film 105 provided by the embodiments of the present application is higher, and the depolarization effect is better.

[0114] In some embodiments, in the plurality of liquid crystal molecule sets 21, the shapes and / or sizes of the lines in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged can be the same. In this way, the processing difficulty of the depolarization film can be reduced.

[0115] In some embodiments, the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged is a closed line with the first end connected to the second end, and the closed line includes a plurality of segments, at least two of the plurality of segments have different extension directions. In this way, the tilt angle of the director of the liquid crystal molecules arranged in the plurality of segments of the closed line is distributed in the range of 0°-360°, and the rotation of the polarized light at different angles in the range of 0°-360° can be realized.

[0116] On the basis of the above-mentioned embodiments, and as shown in FIG. 10, the number of the liquid crystal molecule groups 21a in the liquid crystal molecule set 21 is a plurality. The line in which the liquid crystal molecules m in each of the liquid crystal molecule groups 21a are arranged is a closed line with the first end connected to the second end, and the plurality of closed lines are sequentially nested along the plane in which the liquid crystal layer 2 is located. In this way, the liquid crystal molecule set 21 occupies a larger area in the liquid crystal layer 2, and the depolarization efficiency can be improved, and the rotation of the polarized light P at different angles in a larger angle range can be realized, so that the natural light conversion efficiency can be improved, and the depolarization effect can be ensured.

[0117] When the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged is a closed line with the first end connected to the second end, and as shown in FIG. 10, the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged is a circular line. In this way, the tilt angle of the director of the liquid crystal molecules m arranged in the plurality of segments of the circular line is continuously distributed in the range of 0°-360° with respect to the X axis, and the rotation of the polarized light at continuous angles in the range of 0°-360° can be realized, and the depolarization effect can be improved.

[0118] On the basis of the above-mentioned embodiments, and as shown in FIG. 10, the line in which the liquid crystal molecules m in each of the liquid crystal molecule groups 21a are arranged is a circular line, and the plurality of circular lines are concentrically arranged. In this way, the uniformity of the distribution of the plurality of liquid crystal molecule groups 21a in the liquid crystal molecule set 21 is better, and the depolarization efficiency can be improved.

[0119] In other embodiments, as shown in FIG. 14a, which is a structural schematic diagram of the liquid crystal molecule set 21 in the depolarization film 105 provided by some other embodiments of the present application, the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged is an elliptical line. The tilt angle of the director of the liquid crystal molecules arranged in the plurality of segments of the elliptical line is also distributed in the range of 0°-360° with respect to the X axis direction, and the rotation of the polarized light P at different angles in the range of 0°-360° can also be realized.

[0120] In other embodiments, the line in which the liquid crystal molecules m in the liquid crystal molecule group 21a are arranged can also be a quadrilateral line, a triangular line, a pentagonal line, or a heart-shaped line, which is not limited in the present application.

[0121] In some other embodiments, referring to FIG. 14b, FIG. 14b is a schematic view of the structure of the liquid crystal molecule set 21 in the depolarization film 105 according to some other embodiments of the present application. The number of the liquid crystal molecule groups 21a in the liquid crystal molecule set 21 is multiple. For example, the number of the liquid crystal molecule groups 21a is two. The two liquid crystal molecule groups 21a include a first liquid crystal molecule group 21a1 and a second liquid crystal molecule group 21a2. The liquid crystal molecules m in the first liquid crystal molecule group 21a1 are arranged in straight lines. The liquid crystal molecules m in the second liquid crystal molecule group 21a2 are arranged in straight lines. The extension direction of the lines in which the liquid crystal molecules m in the first liquid crystal molecule group 21a1 are arranged is different from the extension direction of the lines in which the liquid crystal molecules m in the second liquid crystal molecule group 21a2 are arranged. The lines in which the liquid crystal molecules m in the first liquid crystal molecule group 21a1 are arranged intersect the lines in which the liquid crystal molecules m in the second liquid crystal molecule group 21a2 are arranged. This structure is simple and easy to implement.

[0122] In some other embodiments, referring to FIG. 14c, FIG. 14c is a schematic view of the structure of the liquid crystal molecule set 21 in the depolarization film 105 according to some other embodiments of the present application. The number of the liquid crystal molecule groups 21a in the liquid crystal molecule set 21 is multiple. The multiple liquid crystal molecule groups 21a include multiple third liquid crystal molecule groups 21a3. The liquid crystal molecules m in each third liquid crystal molecule group 21a3 are arranged in arc lines. The arc lines include multiple segments. The extension direction of at least two segments is different. The multiple third liquid crystal molecule groups 21a3 are arranged along the radial direction of the arc lines in sequence. In this way, the liquid crystal molecule set 21 occupies a larger area in the liquid crystal layer 2. The depolarization efficiency can be improved. The polarized light P can be rotated at different angles in a larger angle range. The natural light conversion efficiency can be improved. The depolarization effect can be ensured.

[0123] In the above embodiments, the multiple liquid crystal molecule groups 21a can all be the third liquid crystal molecule groups 21a3. Alternatively, the multiple liquid crystal molecule groups 21a can include the third liquid crystal molecule groups 21a3 and other liquid crystal molecule groups. FIG. 14c exemplarily illustrates that the multiple liquid crystal molecule groups 21a include two third liquid crystal molecule groups 21a3 and a first liquid crystal molecule group 21a1. This cannot be considered as a special limitation to the present application.

[0124] The array interval of the array of liquid crystal molecule sets 21 refers to the distance between the centers of two adjacent liquid crystal molecule sets 21 along the array direction of the array of liquid crystal molecule sets 21, which is denoted as D in FIG. 9. The size of the array interval D affects the processing difficulty and depolarization effect of the depolarization film 105. The smaller the array interval D, the greater the setting density of the liquid crystal molecule sets 21, and the greater the processing difficulty of the array of liquid crystal molecule sets 21. However, the smaller the array interval D, the greater the number of liquid crystal molecule sets 21 set in a unit area, the higher the natural light conversion efficiency, and the better the depolarization effect. Therefore, in order to balance the processing difficulty and depolarization effect of the depolarization film 105, the array interval D of the liquid crystal molecule sets 21 can be greater than or equal to 40 μm and less than or equal to 100 μm. Optionally, the array interval D can be 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm. In this way, the size of the array interval D is moderate, and the processing difficulty and depolarization effect of the depolarization film 105 can be balanced.

[0125] Referring to FIG. 15, which is a schematic view of the cross-sectional structure of the depolarization film 105 along A-A in FIG. 10. The depolarization film 105 can also include an optical base film 1, which is also a light-transmitting structure. In some embodiments, the light transmittance of the optical base film 1 can also be greater than or equal to 95%. The liquid crystal layer 2 is arranged on the optical base film 1. Optionally, the liquid crystal layer 2 can be arranged on one surface of the optical base film 1 or on two opposite surfaces of the optical base film 1. The present application exemplarily illustrates the liquid crystal layer 2 arranged on one surface of the optical base film 1, which should not be considered as a special limitation of the present application.

[0126] In order to facilitate the description of each of the following embodiments, the surface of the optical base film 1 facing the liquid crystal layer 2 is defined as the first surface S1, and the surface of the optical base film 1 opposite to the liquid crystal layer 2 is defined as the second surface S2. Referring to FIG. 16, which is a top view of the first surface S1 of the optical base film 1 in the depolarization film 105 shown in FIG. 15, the first surface S1 is arrayed with a plurality of groove sets 3. The number of the plurality of groove sets 3 is equal to the number of the liquid crystal molecule sets 21 shown in FIG. 10, and corresponds to the liquid crystal molecule sets 21 along the thickness direction of the depolarization film 105. The "correspondence" described in the present embodiment and each of the following embodiments refers to the correspondence along the thickness direction of the depolarization film 105, that is, the projection of the two on the plane of the depolarization film 105 has an overlap.

[0127] Referring to FIG. 17 and FIG. 18, FIG. 17 is a partial enlarged view of the groove set 3 in region III of the optical base film 1 shown in FIG. 16, the groove set 3 shown in FIG. 17 corresponds to the liquid crystal molecule set 21 shown in FIG. 10, and FIG. 18 is a schematic view of a cross section of the optical base film 1 shown in FIG. 17 along the B-B direction. The groove set 3 includes at least one linear groove 31. The linear groove 31 is recessed from the first surface S1 to the second surface S2. The number of the linear grooves 31 can be one or more, and FIG. 17 exemplarily shows three linear grooves 31. The number of the linear grooves 31 in the groove set 3 is equal to the number of the liquid crystal molecule groups 21a in the corresponding liquid crystal molecule set 21, and corresponds to the liquid crystal molecule groups 21a in the corresponding liquid crystal molecule set 21 in the thickness direction of the depolarization film 105. In the thickness direction of the depolarization film 105, each groove section in each linear groove 31 corresponds to a section of a line in which the liquid crystal molecules m in the corresponding liquid crystal molecule group 21a are arranged.

[0128] For example, referring to FIG. 10 and FIG. 17, each groove section in the outermost linear groove 31 in the groove set 3 shown in FIG. 17 corresponds to the outermost liquid crystal molecule group 21a in the liquid crystal molecule set 21 shown in FIG. 10. Specifically, the linear groove 31 includes a first groove section a, a second groove section b, and a third groove section c, the first groove section a corresponds to the liquid crystal molecules arranged in the line section A, the second groove section b corresponds to the liquid crystal molecules arranged in the line section B, and the third groove section c corresponds to the liquid crystal molecules arranged in the line section C.

[0129] For another example, referring to FIG. 14c and FIG. 19, FIG. 19 is a schematic view of the structure of the groove set 3 in the depolarization film 105 according to some other embodiments of the present application. The groove set 3 shown in FIG. 19 corresponds to the liquid crystal molecule set 21 shown in FIG. 14c, and the plurality of linear grooves 31 in the groove set 3 correspond to the plurality of liquid crystal molecule groups 21a in the liquid crystal molecule set 21, and each groove section in each linear groove 31 corresponds to a section of a line in which the liquid crystal molecules m in the corresponding liquid crystal molecule group 21a are arranged.

[0130] In this way, the linear grooves 31 in the plurality of groove sets 3 can be used to orient the liquid crystal molecules in the liquid crystal layer 2, thereby forming the plurality of liquid crystal molecule sets 21. This processing method is simple and easy to implement.

[0131] Of course, in some other embodiments, the groove set 3 can not be provided in the optical base film 1, and the liquid crystal molecules in the liquid crystal layer 2 can be oriented by using polyimide (PI), rubbing method, photo-alignment method, or polymer method to form the liquid crystal molecule set 21. In some other embodiments, the optical base film 1 can also not be provided in the depolarization film 105.

[0132] The optical base film 1 can be a structural layer or can be stacked by multiple structural layers. In some embodiments, referring to FIG. 20, which is a schematic diagram of a cross-sectional structure of a depolarization film 105 according to some embodiments of the present application, the optical base film 1 can include an optical substrate layer 11 and a photoresist layer 12 arranged on a surface of the optical substrate layer 11 facing the liquid crystal layer 2. The plurality of groove sets 3 are arranged on the photoresist layer 12. The plurality of groove sets 3 can be formed on the photoresist layer 12 by a photoetching technology, which is simple and convenient to operate.

[0133] In some embodiments, the photoresist layer 12 can be arranged on one surface of the optical substrate layer 11 or on two opposite surfaces of the optical substrate layer 11. The present application is exemplarily described by taking the photoresist layer 12 arranged on one surface of the optical substrate layer 11. When the photoresist layer 12 is arranged on two opposite surfaces of the optical substrate layer 11, groove sets 3 can be arranged on the photoresist layers 12 of the two surfaces of the optical substrate layer 11, and the liquid crystal layer can be arranged on the two photoresist layers 12. In this way, the depolarization effect can be improved.

[0134] The material of the optical substrate layer 11 is different from that of the photoresist layer. The optical substrate layer 11 can be made of a material with high strength, such as, but not limited to, PE, PP, PVC, PET, AR material, glass, sapphire, acrylic, etc., which are not limited in the present application. The material of the photoresist layer can be negative photoresist or positive photoresist, which are not limited in the present application.

[0135] Along the thickness direction of the photoresist layer 102, referring to FIG. 20, the groove sets 3 can penetrate the photoresist layer 12. This structure is simple and convenient to operate.

[0136] In other embodiments, referring to FIG. 21, which is a schematic diagram of a cross-sectional structure of a depolarization film 105 according to some embodiments of the present application, the depth of the groove sets 3 can also be less than the thickness of the photoresist layer 12, and the groove sets 3 do not penetrate the surface of the photoresist layer 12 facing the optical substrate layer 11, that is, the end of the groove sets 3 facing the optical substrate layer 11 and the optical substrate layer 11 leave a part of the photoresist. In other embodiments, the groove sets 3 can also extend into the optical substrate layer 11, which are not limited in the present application.

[0137] The liquid crystal layer 2 can be partially accommodated in the grooves in the groove sets 3, or can be partially arranged on the side of the first surface S1 opposite to the second surface S2, or can be completely accommodated in the grooves in the groove sets 3. The present application is exemplarily described by taking the liquid crystal layer 2 partially accommodated in the grooves in the groove sets 3 and partially arranged on the side of the first surface S1 opposite to the second surface S2, which cannot be considered as a special limitation to the present application.

[0138] In some embodiments, the depolarization film 105 can be a 1 / 2 wave film. That is, the thickness d of the depolarization film 105 satisfies: d = (N x l) / (2 x Dn). Wherein, N is an odd number; l is the wavelength, l is greater than or equal to 380 nm and less than or equal to 780 nm, that is, the visible light wavelength range; Dn is the birefringence of the depolarization film 105. In this way, the incident light produces an optical path difference d after passing through the depolarization film 105, d = Dnd = (N x l) / 2, that is, a phase difference Df is produced, Df = 2pdl = Np, so that the outgoing light is still linearly polarized light, and multiple linearly polarized light in different directions is mixed to form natural light.

[0139] In some embodiments, the above l is greater than or equal to 450 nm and less than or equal to 650 nm, that is, between the center wavelength of blue light and the center wavelength of red light. In this way, the light emitted by the first color light source, the second color light source and the third color light source in each pixel unit of the display panel 101 can be depolarized in a targeted manner, and the depolarization effect is better.

[0140] In some embodiments, l can be selected as 450 nm, 550 nm or 650 nm, that is, equal to the center wavelength of blue light, the center wavelength of green light or the center wavelength of red light. In this way, the light emitted by the first color light source, the second color light source and the third color light source can be further depolarized in a targeted manner, and the depolarization effect is better.

[0141] With the development of technology, electronic devices are gradually developing towards thinness. The greater the thickness d of the depolarization film 105, the more difficult it is to make the whole machine thin, but the greater the thickness d of the depolarization film 105, the better the structural strength, which is convenient for assembly operation.

[0142] Based on this, in some embodiments, the thickness d of the depolarization film 105 can be greater than or equal to 0.3 pm and less than or equal to 3 pm. Optionally, the thickness d of the depolarization film 105 can be 0.3 pm, 0.4 pm, 0.5 pm, 0.8 pm, 1 pm, 1.2 pm, 1.4 pm, 1.5 pm, 1.6 pm, 1.8 pm, 2 pm, 2.2 pm, 2.4 pm, 2.5 pm, 2.8 pm or 3 pm. When the thickness d of the depolarization film 105 is in this range, the thickness is moderate, which can ensure the structural strength, reduce the assembly difficulty, and at the same time avoid affecting the thinness of the electronic device too much.

[0143] In some embodiments, the birefringence of the depolarization film 105 can be greater than or equal to 0.05 and less than or equal to 0.45. Alternatively, the birefringence of the depolarization film 105 can be 0.05, 0.05, 0.1, 0.15, 0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.3, 0.32, 0.34, 0.36, 0.38, 0.4, 0.41, 0.42, 0.43, 0.44 or 0.45. When the birefringence of the depolarization film 105 is within this range, the thickness of the depolarization film 105 can be reduced, which is conducive to the thinning of the display module.

[0144] When the depolarization film 105 provided by the embodiments of the present application is applied to a display module, in some embodiments, referring to FIG. 22, which is a structural schematic diagram of a display module provided by some embodiments of the present application, the depolarization film 105 is disposed between the polarizing layer 102 and the light-transmitting cover plate 103. In this way, the light-transmitting cover plate 103 can be used to protect the depolarization film 105.

[0145] In yet some embodiments, referring to FIG. 23, which is a structural schematic diagram of a display module provided by yet some embodiments of the present application. In this embodiment, the depolarization film 105 and the light-transmitting cover plate 103 can be integrated as one structural member. In this way, the depolarization film 105 does not need to be separately provided, which can simplify the structural composition of the display module and reduce the thickness of the display module.

[0146] In yet some embodiments, referring to FIG. 24, which is a structural schematic diagram of a display module provided by yet some embodiments of the present application. In this embodiment, the depolarization film 105 can be disposed between the light-transmitting cover plate 103 and the protective film 104. In this way, the depolarization film 105 can play a role in depolarization and also play a role in protecting the light-transmitting cover plate 103.

[0147] In yet some embodiments, referring to FIG. 25, which is a structural schematic diagram of a display module provided by yet some embodiments of the present application. In this embodiment, the depolarization film 105 and the protective film 104 can be integrated as one structural member. In this way, the depolarization film 105 does not need to be separately provided, which can simplify the structural composition of the display module and reduce the thickness of the display module.

[0148] In yet some embodiments, referring to FIG. 26, which is a structural schematic diagram of a display module provided by yet some embodiments of the present application. In this embodiment, the depolarization film 105 is disposed on the side of the protective film 104 that faces away from the light-transmitting cover plate 103. In this way, the depolarization film 105 can play a role in depolarization and also play a role in protecting the protective film 104 and the light-transmitting cover plate 103.

[0149] The number of depolarization films 105 in the display module can be one or multiple. FIGS. 22-26 list five implementations of the display module with one depolarization film 105. In other embodiments, please refer to FIG. 27, which is a structural schematic diagram of a display module according to some embodiments of the present application. In this embodiment, the number of depolarization films 105 in the display module is two, one depolarization film 105 is integrated with the light-transmissive cover plate 103, and the other depolarization film 105 is integrated with the protective film 104. In other embodiments, the number of depolarization films 105 can be three, four, five, or the like, and the depolarization films 105 can be independent of the light-transmissive cover plate 103 and the protective film 104, which are not limited in the present application. The liquid crystal molecule sets 21 in the multiple depolarization films 105 can be arranged in a staggered manner, so that the depolarization effect can be improved by the multiple depolarization films 105.

[0150] The present application also provides a processing method of the depolarization film 105, which includes the following step S100.

[0151] Step S100: Orienting multiple parts of liquid crystal molecules in the liquid crystal layer 2 arranged in an array along the plane where the liquid crystal layer 2 is located, to form multiple liquid crystal molecule sets 21. The liquid crystal molecule sets 21 include liquid crystal molecule groups 21a, and the liquid crystal molecule groups 21a include multiple liquid crystal molecules arranged in lines. The lines include multiple segments, and the orientation vectors of the liquid crystal molecules arranged in the segments in the liquid crystal molecule groups 21a are consistent with the extension directions of the segments. The number of liquid crystal molecule groups 21a is at least one, and the extension directions of at least two segments in the line where the liquid crystal molecules m are arranged in the liquid crystal molecule groups 21a are different; or the number of liquid crystal molecule groups 21a in the liquid crystal molecule sets 21 is multiple, and the extension directions of the lines where the liquid crystal molecules m are arranged in at least two liquid crystal molecule groups 21a are different. In this way, the orientation vectors of the liquid crystal molecules arranged in at least two segments in the liquid crystal molecule groups 21a are different, or the orientation vectors of the liquid crystal molecules in at least two liquid crystal molecule groups 21a are different.

[0152] When the above-mentioned processing method is applied to the display module of an electronic device, the image light emitted by the display panel is natural light, which is converted into polarized light after passing through the polarizing layer. The polarized light will rotate under the action of the liquid crystal molecules in the liquid crystal layer after passing through the depolarization film, and the rotation angle is the included angle between the polarization direction of the polarized light and the director direction of the liquid crystal molecules in the liquid crystal segment. Because the director directions of the liquid crystal molecules arranged in at least two segments in the liquid crystal molecule group 21a are different, or the director directions of the liquid crystal molecules in at least two liquid crystal molecule groups 21a are different, the polarized light can produce at least two different angles of rotation, and the mixed outgoing light obtained by rotation can make the light tend to be closer to natural light, thereby achieving a certain degree of depolarization effect.

[0153] In some embodiments, referring to FIG. 28 and FIG. 29, FIG. 28 is a flowchart of a processing method of a depolarization film 105 provided by some embodiments of the present application, and FIG. 29 is a schematic structural diagram of the processing method of the depolarization film 105 shown in FIG. 28. The above-mentioned step S100 can include the following steps S10-S40.

[0154] Step S10: providing an optical base film 1, the cross-sectional structure of the optical base film 1 is shown in (a) of FIG. 29.

[0155] The optical base film 1 is a light-transmitting structure. In some embodiments, the light transmittance of the optical base film 1 can be greater than or equal to 95%. The optical base film 1 can be a structural layer or can be stacked by multiple structural layers. In some embodiments, referring to FIG. 29, the optical base film 1 can include an optical base layer 11 and a photoresist layer 12 arranged on the optical base layer 11. This structure is simple, and the optical base film 1 is used to ensure the structural strength, and the photoresist layer 12 can be provided with grooves by using photolithography technology.

[0156] Step S20: arraying a plurality of groove sets 3 on the optical base film 1. The cross-sectional structure of the optical base film 1 after arranging the groove sets 3 is shown in (b) of FIG. 29. The groove set 3 includes a linear groove 31. The number of the linear grooves 31 is at least one, and the extension directions of at least two groove segments of the linear groove are different; or the number of the linear grooves 31 in the groove set 3 is multiple, and the extension directions of at least two linear grooves 31 in the multiple linear grooves 31 are different.

[0157] The plurality of groove sets 3 can be arranged in a rectangular array, a square array, a hexagonal array, or a ring envelope array. Referring to FIG. 30, which is a top view of the optical base film 1 shown in (b) of FIG. 29, the present application is exemplarily described by taking the square array of the plurality of groove sets 3.

[0158] The shapes and sizes of the plurality of groove sets 3 can be the same or different. Please continue to refer to FIG. 30, and the shapes and sizes of the plurality of groove sets 3 are exemplarily illustrated as the same in the present application, so that the processing difficulty can be reduced. Moreover, the plurality of groove sets 3 can be formed successively or simultaneously, which is not specifically limited in the present application.

[0159] The linear groove 31 can be a straight linear groove or a curved linear groove. For example, the linear groove 31 can include a triangular linear groove, a circular linear groove, a square linear groove, a diamond linear groove, a rectangular linear groove, a heart-shaped linear groove, and the like.

[0160] In some embodiments, the number of linear grooves 31 in the groove pattern 3 can be a plurality, each of which extends along a closed curve in a head-to-tail manner, and the plurality of linear grooves 31 are sequentially nested along the plane where the optical base film is located. Each of the linear grooves 31 can be a circular linear groove, an arc linear groove, an elliptical linear groove, a triangular linear groove, a quadrilateral linear groove, a pentagonal linear groove, a heart-shaped linear groove, or other irregularly shaped linear grooves. The linear grooves 31 are exemplarily illustrated as circular linear grooves in the present application.

[0161] On the basis of the above-mentioned embodiments, please refer to FIG. 31, which is a flow chart of step S20 in the processing method of the depolarization film 105 shown in FIG. 28. Step S20 can include the following steps S21 and S22.

[0162] Step S21: using an interferometer to form a plurality of interference fringes on the photoresist layer 12, the interference fringes including light fringes and dark fringes which are sequentially and alternately nested along the plane where the photoresist layer 12 is located, one of the light fringes and the dark fringes makes part of the photoresist in the irradiation area in a solid state, and the other makes part of the photoresist in the irradiation area in a liquid state.

[0163] The interferometer can be selected as a Michelson interferometer. The light for forming the interference fringes can be selected as ultraviolet light, or other light including ultraviolet light, which is not specifically limited in the present application. The way of forming the interference fringes on the photoresist layer 12 by the interferometer can be equal inclination interference or equal thickness interference, which is not specifically limited in the present application.

[0164] The material of the photoresist layer 12 can be a positive photoresist or a negative photoresist. Optionally, the material of the photoresist layer 12 is a positive photoresist, so that after the interference fringes are formed on the photoresist layer 12, the dark fringes in the interference fringes make the part of the photoresist layer in the irradiated area solid, and the bright fringes make the part of the photoresist layer in the irradiated area liquid. Alternatively, the material of the photoresist layer 12 is a negative photoresist, so that after the interference fringes are formed on the photoresist layer 12, the bright fringes in the interference fringes make the part of the photoresist layer in the irradiated area solid, and the dark fringes make the part of the photoresist layer in the irradiated area liquid. This structure is simple and easy to implement.

[0165] Step S22: removing the liquid part in the photoresist layer 12 to form a plurality of groove sets 3.

[0166] The way of removing the liquid part in the photoresist layer 12 can be solution cleaning or other ways, which are not limited in the present application.

[0167] The processing method of the groove set 3 is simple and easy to implement. In other embodiments, the groove set 3 can also be processed by a mask lithography process or a laser engraving process, which are not limited in the present application.

[0168] Step S30: disposing a liquid crystal layer 2 on the surface of the optical base film 1 provided with the plurality of groove sets 3, and the groove sets 3 are used for orienting the liquid crystal molecules in the liquid crystal layer 2, so that the orientation vector direction of the liquid crystal molecules corresponding to each groove section of the linear groove 31 in the groove set 3 is consistent with the extension direction of the groove section. The structure after disposing the liquid crystal layer 2 can be referred to (c) in FIG. 29.

[0169] The disposing process of the liquid crystal layer 2 on the optical base film 1 includes but is not limited to immersion process and coating process, wherein the coating process includes but is not limited to doctor blade coating process, roller coating process, dip coating process and spray coating process.

[0170] Step S40: curing the liquid crystal layer 2.

[0171] The way of curing the liquid crystal layer 2 can be chemical curing, heating curing, ultraviolet (UV) irradiation curing, room temperature curing or moisture absorption curing in the air, etc. The present application is exemplarily described by the UV irradiation curing process to cure the liquid crystal layer 2, which cannot be considered as a special limitation of the present application.

[0172] In this way, the groove set 3 on the optical base film 1 is used to orient the liquid crystal molecules in the liquid crystal layer 2 to form a plurality of liquid crystal molecule sets 21. This method is simple and easy to implement.

[0173] Of course, in other embodiments, the liquid crystal molecules in the liquid crystal layer 2 can also be oriented by using a PI method, a rubbing method, a photo-alignment method, or a polymer method to form the liquid crystal molecule collection 21, and the present application does not make specific limitations thereto.

[0174] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0175] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A polarization correction film, characterized in that, Including the liquid crystal layer; The liquid crystal layer includes a plurality of liquid crystal molecule sets arranged in an array along the plane of the liquid crystal layer, the liquid crystal molecule sets include liquid crystal molecule groups, and the liquid crystal molecule groups include a plurality of liquid crystal molecules arranged along lines; The line comprises multiple segments, and within the liquid crystal molecule group, the orientation vector direction of the liquid crystal molecules arranged in the segment is consistent with the extension direction of the segment; The number of liquid crystal molecule groups within the liquid crystal molecule set is at least one, and at least two segments in the line have different extension directions; or, the number of liquid crystal molecule groups within the liquid crystal molecule set is multiple, and among the multiple liquid crystal molecule groups, at least two liquid crystal molecule groups have lines in which the liquid crystal molecules are arranged in different extension directions.

2. The polarization correction film according to claim 1, characterized in that, The lines arranged by the liquid crystal molecules within the liquid crystal molecule group are closed lines that connect end to end. The closed line includes multiple segments, and at least two of the segments extend in different directions.

3. The polarization correction film according to claim 2, characterized in that, The number of liquid crystal molecule groups within the liquid crystal molecule set is multiple, and the lines arranged by the liquid crystal molecules in each liquid crystal molecule group are closed lines that are connected end to end. Multiple closed lines are nested sequentially along the plane of the liquid crystal layer.

4. The polarization correction film according to claim 2 or 3, characterized in that, The lines arranged by the liquid crystal molecules within the liquid crystal molecule group are circular lines, elliptical lines, quadrilateral lines, triangular lines, pentagonal lines, or heart-shaped lines.

5. The polarization correction film according to claim 3, characterized in that, The lines in which the liquid crystal molecules in each liquid crystal molecule group are arranged are all circular lines, and multiple circular lines are arranged concentrically.

6. The polarization correction film according to claim 1, characterized in that, The number of liquid crystal molecule groups within the liquid crystal molecule set is multiple, and the multiple liquid crystal molecule groups include a first liquid crystal molecule group and a second liquid crystal molecule group. The lines arranged by the liquid crystal molecules in the first liquid crystal molecule group are straight lines, and the lines arranged by the liquid crystal molecules in the second liquid crystal molecule group are straight lines. The extension directions of the lines arranged by the liquid crystal molecules in the first liquid crystal molecule group are different from the extension directions of the lines arranged by the liquid crystal molecules in the second liquid crystal molecule group, and the lines arranged by the liquid crystal molecules in the first liquid crystal molecule group intersect with the lines arranged by the liquid crystal molecules in the second liquid crystal molecule group.

7. The polarization correction film according to claim 1, characterized in that, The number of liquid crystal molecule groups within the liquid crystal molecule set is multiple, and the multiple liquid crystal molecule groups include multiple third liquid crystal molecule groups. The lines in which the liquid crystal molecules in each third liquid crystal molecule group are arranged are all arc-shaped lines, and the multiple third liquid crystal molecule groups are arranged sequentially along the radial direction of the arc-shaped lines. The arc-shaped line includes multiple segments, and at least two of the segments extend in different directions.

8. The polarization correction film according to any one of claims 1-7, characterized in that, In the plurality of liquid crystal molecule sets, the lines in which the liquid crystal molecules within the liquid crystal molecule group are arranged have the same shape and / or size.

9. The polarization correction film according to any one of claims 1-8, characterized in that, It also includes an optical base film, on which the liquid crystal layer is disposed; The optical base film has a surface array of multiple trenches facing the liquid crystal layer; the multiple trenches correspond one-to-one with the multiple liquid crystal molecule sets along the thickness direction of the polarization removal film. The trench set includes at least one linear trench, and the number of linear trenches in the trench set is equal to the number of liquid crystal molecule groups in the corresponding liquid crystal molecule group, and they correspond one-to-one along the thickness direction of the polarization removal film.

10. The polarization correction film according to claim 9, characterized in that, The optical substrate film includes an optical substrate layer and a photoresist layer disposed on the surface of the optical substrate layer facing the liquid crystal layer, and the plurality of trenches are disposed on the photoresist layer.

11. The polarization correction film according to any one of claims 1-10, characterized in that, The array spacing of the plurality of liquid crystal molecule sets is greater than or equal to 40 μm and less than or equal to 100 μm.

12. The polarization correction film according to any one of claims 1-11, characterized in that, The thickness d of the polarization removal film satisfies: d=(N×λ) / (2×⊿n); Where N is an odd number; λ is the wavelength, which is greater than or equal to 380 nm and less than or equal to 780 nm; Δn is the birefringence of the depolarization film.

13. The polarization correction film according to claim 12, characterized in that, λ is greater than or equal to 450nm and less than or equal to 650nm.

14. The polarization correction film according to claim 12 or 13, characterized in that, λ is equal to 450nm, 550nm or 650nm.

15. The polarization correction film according to any one of claims 1-14, characterized in that, The thickness d of the depolarization film is greater than or equal to 0.3 μm and less than or equal to 3 μm.

16. The polarization correction film according to any one of claims 1-15, characterized in that, The birefringence Δn of the depolarization film is greater than or equal to 0.05 and less than or equal to 0.

45.

17. A display module, characterized in that, include: Display panel; A polarizing layer is located on the light-emitting side of the display panel and is stacked with the display panel. The polarization depolarization film according to any one of claims 1-16, wherein the polarization depolarization film is located on the side of the polarization layer opposite to the display panel and is stacked with the polarization layer.

18. An electronic device, characterized in that, include: case; The display module of claim 17, wherein the display module is connected to the housing and is electrically connected to the circuit board.

19. A method for processing a polarization removal film, characterized in that, include: Multiple liquid crystal molecules arranged in an array along the plane of the liquid crystal layer are oriented to form multiple liquid crystal molecule aggregates. The liquid crystal molecule set includes a liquid crystal molecule group, and the liquid crystal molecule group includes a plurality of liquid crystal molecules arranged along the line; The line comprises multiple segments, and within the liquid crystal molecule group, the orientation vector direction of the liquid crystal molecules arranged in the segment is consistent with the extension direction of the segment; The number of liquid crystal molecules within the liquid crystal molecule set is at least one, and at least two segments in the line extend in different directions; and / or, the number of liquid crystal molecule groups within the liquid crystal molecule set is multiple. In at least two of the liquid crystal molecule groups, the lines in which the liquid crystal molecules are arranged extend in different directions.

20. The processing method according to claim 19, characterized in that, The method of aligning multiple portions of liquid crystal molecules arranged in an array along the plane of the liquid crystal layer to form multiple liquid crystal molecule assemblies includes: Provide an optical base film; Multiple trench sets are arrayed on the optical base film, and the trench sets include linear trenches; wherein, the number of linear trenches in the trench set is at least one, and at least two trench segments of the linear trench have different extension directions; or, the number of linear trenches in the trench set is multiple, and at least two of the multiple linear trenches have different extension directions. A liquid liquid crystal layer is disposed on the surface of the optical base film having the plurality of trench sets; wherein, the trench sets are used to orient the liquid crystal molecules in the liquid crystal layer so that the orientation vector direction of the liquid crystal molecules corresponding to each trench segment of the linear trench in the trench set is consistent with the extension direction of the trench segment. The liquid crystal layer is cured.

21. The processing method according to claim 20, characterized in that, The optical base film includes an optical base layer and a photoresist layer disposed on the optical base layer; the number of linear trenches in the trench set is multiple, each linear trench extends along a closed curve that connects the beginning and end, and multiple linear trenches are nested sequentially along the plane where the optical base film is located; The array of multiple trench sets arranged on the optical substrate film includes: An interferometer is used to make light form multiple interference fringes on the photoresist layer. The interference fringes include bright fringes and dark fringes that are alternately and nested along the plane of the photoresist layer. One of the bright fringes and the dark fringes makes part of the photoresist in the irradiated area solid, and the other makes part of the photoresist in the irradiated area liquid. Remove the liquid portion from the photoresist layer to form the plurality of trench sets.

22. The processing method according to claim 21, characterized in that, The photoresist layer is made of negative photoresist. The bright fringes in the interference fringes make part of the photoresist in the irradiated area solid, while the dark fringes make part of the photoresist in the irradiated area liquid. Alternatively, the photoresist layer is made of positive photoresist, and the bright fringes in the interference fringes cause part of the photoresist in the irradiated area to be liquid, while the dark fringes cause part of the photoresist in the irradiated area to be solid.

Images