Display module and display device

Abstract

The invention provides a display module and a display device, and relates to the technical field of display, the display module is opposite to a display panel of the display device, the display module comprises a first grating layer, the first grating layer comprises a plurality of first light blocking parts distributed side by side in the first direction, and a first opening is formed between every two adjacent first light blocking parts; the second grating layer comprises a plurality of second light blocking parts which are distributed side by side in the second direction, a second opening exists between every two adjacent second light blocking parts, and a first included angle formed between the vertical projection of the second light blocking parts to the first light blocking parts and the first light blocking parts is smaller than 90 degrees; the first grating layer further comprises at least one first light control part; the first light control part is positioned in the first opening; and / or the second grating layer further comprises at least one second light control part, and the second light control part is located in the second opening. Based on the scheme, the display device carrying the display module realizes a multi-visual-area display function, a naked-eye three-dimensional display function and a three-dimensional display function for a plurality of visual-area pictures.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a display module and a display device. Background Art

[0002] With the continuous advancement of technology and the continuous upgrading of consumer demand, the display functions of display screens will develop in a more intelligent and personalized direction. In view of this, how to give display devices more display functions and realize flexible switching between multiple display functions to improve user experience is an urgent problem to be solved. Summary of the invention

[0003] The present application provides a display module and a display device, so that the display device equipped with the display module can realize a multi-viewing zone display function, a naked-eye stereoscopic display function, and a stereoscopic display function for multiple viewing zone images, and supports flexible switching between the three display functions. It can also realize a light control function, so that the brightness of multiple viewing zone images is controllable and consistent, which helps to improve the user experience.

[0004] In a first aspect, a display module is provided, which is opposite to a display panel of a display device, and comprises: a first grating layer comprises a plurality of first light blocking portions arranged side by side along a first direction, and a first opening exists between two adjacent first light blocking portions; a second grating layer comprises a plurality of second light blocking portions arranged side by side along a second direction, and a second opening exists between two adjacent second light blocking portions, and a first angle formed between a vertical projection of the second light blocking portion onto the first light blocking portion and the first light blocking portion is less than 90°; wherein the first grating layer further comprises at least one first light control portion, and the first light control portion is located at the first opening; and / or the second grating layer further comprises at least one second light control portion, and the second light control portion is located at the second opening.

[0005] In combination with the first aspect, in some implementations of the first aspect, the first grating layer is located between the display panel and the second grating layer; or, the second grating layer is located between the display panel and the first grating layer.

[0006] In combination with the first aspect, in some implementations of the first aspect, the first light blocking portion or the second light blocking portion is a baffle.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the first light control portion or the second light control portion includes: a first transparent electrode portion; a second transparent electrode portion; a first set of liquid crystal molecules, which is located between the first transparent electrode portion and the second transparent electrode portion; wherein, when a first electric field exists between the first transparent electrode portion and the second transparent electrode portion, the first set of liquid crystal molecules forms the first light control portion.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the first grating layer further includes: a first transparent electrode, a surface of which is uniformly covered with a transparent conductive material; a second transparent electrode, a surface of which is covered with a transparent conductive material at a position corresponding to the first opening; and a plurality of first liquid crystal molecules, which are distributed between the first transparent electrode and the second transparent electrode, and when the first liquid crystal molecules are acted upon by an electric field from the first transparent electrode and the second transparent electrode, the first liquid crystal molecules are used to form a first light control portion.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the polarization direction of the light incident on the display module is a third direction, and the first light blocking portion or the second light blocking portion includes: a third transparent electrode portion; a fourth transparent electrode portion; a first polarization portion, the first polarization portion is located on a side of the fourth transparent electrode portion away from the third transparent electrode portion, and the first polarization portion is used to transmit light with a polarization direction of the fourth direction; a second liquid crystal molecule set, the second liquid crystal molecule set is located between the third transparent electrode portion and the fourth transparent electrode portion; wherein, when there is no electric field between the third transparent electrode portion and the fourth transparent electrode portion, the second liquid crystal molecule set is used to convert the polarization direction of the light into the fourth direction, and when there is a second electric field between the third transparent electrode portion and the fourth transparent electrode portion, the second liquid crystal molecule set does not affect the polarization direction of the light.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the width of the first opening accounts for 20% to 50% of the unit grating width of the first grating layer, and the unit grating width is the sum of the width of one first opening and the width of one first light blocking portion.

[0011] In combination with the first aspect, in some implementations of the first aspect, the second light blocking portion includes multiple width values.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the pixels of the display panel are composed of multiple sub-pixels, and the multiple sub-pixels are arranged along a third direction, which is perpendicular to the first direction; the number of the first openings is N, N is greater than 1, and the center of the first opening is opposite to the overall center of the N rows of pixels of the display panel, and each row of the N rows of pixels is used to display different pictures.

[0013] In a second aspect, a display device is provided, comprising a display panel and a display module in any possible implementation of the display module design of the first aspect, wherein the display module is opposite to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of display results of a display device having a single display function;

[0015] Figure 2 It is a schematic diagram of display results of a display device having a multi-viewing zone display function;

[0016] Figure 3 is a structural schematic diagram of a display module 300 proposed in an embodiment of the present application;

[0017] Figure 4 is a schematic diagram of a light transmission path of a display module 300 proposed in an embodiment of the present application;

[0018] Figure 5 is a structural schematic diagram of another display module 300 proposed in an embodiment of the present application;

[0019] Figure 6 is a structural schematic diagram of another display module 300 proposed in an embodiment of the present application;

[0020] Figure 7 is a structural schematic diagram of a first light control unit 317 proposed in an embodiment of the present application;

[0021] Figure 8 is a schematic structural diagram of a first grating layer 310 proposed in an embodiment of the present application;

[0022] Fig. 9 is a schematic structural diagram of a second grating layer 320 proposed in an embodiment of the present application;

[0023] Fig.10 is a structural schematic diagram of a first light blocking portion 311 proposed in an embodiment of the present application;

[0024] Fig.11 is a schematic structural diagram of another first grating layer 310 proposed in an embodiment of the present application;

[0025] Fig.12 is a schematic structural diagram of a second grating layer 320 proposed in an embodiment of the present application;

[0026] Fig.13 is a side cross-sectional view of another first grating layer 310 or second grating layer 320 proposed in an embodiment of the present application;

[0027] Fig.14 It is a schematic diagram of the structure of another second grating layer 320 proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0029] The embodiments of the present application will present various aspects, embodiments or features around a system including multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0030] In addition, in the embodiments of the present application, words such as "exemplary" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0031] The business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0032] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0033] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can be represented by: including the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0034] In the description of the embodiments of the present application, the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "inside", "outside", "vertical" and "horizontal" are defined relative to the directions or positions of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, rather than indicating or implying that the device or component referred to must have a specific direction, or be constructed and operated in a specific direction. They may change accordingly according to changes in the directions of the components placed in the drawings, and therefore cannot be understood as limitations on the present application.

[0035] In the embodiments of the present application, the same reference numerals are used to represent the same components or parts. For the same parts in the embodiments of the present application, only one of the parts or parts may be marked with a reference numeral in the figure. It should be understood that the reference numerals are also applicable to other identical parts or parts. In addition, the various parts in the drawings are not drawn to scale, and the sizes and dimensions of the parts shown in the drawings are only exemplary and should not be understood as limiting the present application.

[0036] With the development of display technology and the increasing diversification of consumer demand, the functionality and user experience of display devices have become the core elements of market competition. Traditional display devices are often limited to flat displays in a single viewing area and cannot provide users with a further visual experience. Therefore, the display function of the display screen will develop in a more intelligent and personalized direction. Then, how to give the display device more display functions and realize flexible switching between multiple display functions has become an important topic in the current display technology field.

[0037] Based on the above background, the embodiments of the present application consider expanding the display function of the display device from the perspective of multi-viewing zone display and stereoscopic display, so as to meet the user's needs for diversified display experiences such as multi-viewing zone display, naked-eye stereoscopic display and multi-viewing zone stereoscopic display.

[0038] For ease of understanding, the multi-viewing zone display technology and the naked-eye stereoscopic display technology are introduced below.

[0039] Figure 1 The present invention is a schematic diagram of display results of a display device having a single display function.

[0040] Figure 2 The present invention is a schematic diagram of display results of a display device with a multi-viewing zone display function.

[0041] refer to Figure 1 As shown, in Figure 1 The images displayed on the display panel are the same when viewed from different heights in the vertical direction. Figure 2 As shown, in Figure 2The images displayed on the display panel are different when viewed at different heights in the vertical direction. This is because Figure 2 The pixels of the display panel are divided into multiple parts, each part is used to display a different picture, and then based on the corresponding display module, the light emitted by each part of the pixels is projected to positions in different height ranges, so that the eyes of users who watch the display panel at different height ranges receive the light emitted by the corresponding part of the pixels, and the corresponding picture is formed on the retina through the human eye, thereby achieving the effect that when users watch the same display panel at different height ranges, they see different pictures.

[0042] Naked-eye stereoscopic display mainly utilizes the parallax characteristics of human binocularity. When a person's two eyes observe an object, the image information received is different due to the different positions of the two eyes. The brain processes this difference to generate a sense of depth. Naked-eye stereoscopic display technology simulates this binocular parallax by accurately projecting the pixels corresponding to the left and right eyes into the left and right eyes of the audience, thereby creating a three-dimensional visual image. Based on this technology, when viewing the display panel, the user does not need to use other optical devices (such as optical glasses, etc.) to obtain a stereoscopic image from the display panel.

[0043] In view of this, the embodiments of the present application propose a display module and a display device. Through the display module, the display device can realize the multi-viewing zone display function, the naked eye stereoscopic display function and the stereoscopic display function of multiple viewing zone images, which helps to improve the user experience.

[0044] Figure 3 is a schematic diagram of the structure of a display module 300 proposed in an embodiment of the present application. Figure 3 (a) is used to show the side cross-sectional view and top view of the display module 300, and the light propagation path through the display module 300, wherein the side cross-sectional view is through Figure 3 The AA section shown in (b) is obtained; Figure 3 (b) is used to show a stereoscopic view of the display module 300 , and the viewpoint of the stereoscopic view is located on the upper side of the large surface of the display module 300 .

[0045] refer to Figure 3 As shown, the display module 300 is opposite to the display panel 200 of the display device, and the display module 300 includes:

[0046] The first grating layer 310 includes a plurality of first light blocking portions 311 arranged side by side along a first direction, and a first opening 312 exists between two adjacent first light blocking portions 311 .

[0047] The second grating layer 320 includes a plurality of second light blocking portions 321 arranged side by side along a second direction, and a second opening 322 exists between two adjacent second light blocking portions 321 .

[0048] Wherein, a first angle α between a vertical projection of the first light shielding portion and a vertical projection of the second light shielding portion is less than 90°.

[0049] In some possible embodiments, the first light blocking portion 311 and the second light blocking portion 321 may be baffles.

[0050] In some possible embodiments, the first light blocking portion 311 may be Figure 3 The second light shielding portion 321 may also be a long strip structure as shown. Figure 3 A long strip structure is shown.

[0051] In some possible embodiments, the geometric parameters of the plurality of first light blocking portions 311 arranged in the first grating layer 310 may not be completely consistent; similarly, the geometric parameters of the plurality of second light blocking portions 321 arranged in the second grating layer 320 may not be completely consistent.

[0052] In some possible embodiments, the first grating layer 310 and the second grating layer 320 may be supported by a transparent substrate, which may be a transparent substrate or two or more transparent supports arranged at the edge of the sandwich between the first grating layer 310 and the second grating layer 320.

[0053] The multiple first light-blocking parts 311 of the first grating layer 310 are used for longitudinal light splitting, and the function of longitudinal light splitting is to project light from different directions to different height ranges respectively, so as to realize multi-viewing zone display; the multiple second light-blocking parts 321 of the second grating layer 320 are used for transverse light splitting, and the function of transverse light splitting is to provide images with parallax for the left eye and the right eye, and make the left eye only see the image of the left eye, and the right eye only see the image of the right eye, so as to synthesize a stereoscopic effect in the brain to realize stereoscopic display. Then, based on the double grating layer structure of the display module 300, the multi-viewing zone display and stereoscopic display functions of the display panel 200 can be realized.

[0054] Should Figure 3 The display module 300 shown is used to divide the display screen of the display panel 200 into five viewing areas. This is because the pixel rows of the display panel 200 are defined to display corresponding images, rather than all pixels being defined to display the same image.

[0055] refer to Figure 3From the pixel arrangement of the display panel 200 in (a), it can be seen that the pixels of the display panel 200 are composed of multiple sub-pixels. In this example, one pixel is composed of three sub-pixels, and the colors are red, green, and blue, that is, a red, green, and blue (RGB) pixel; these three sub-pixels are arranged along a third direction, and the third direction is perpendicular to the first direction. The first opening 312 of the first grating layer 310 is used to pass the light from the five rows of pixels, so that the light emitted by the five rows of pixels is projected into different height ranges respectively, and each row of the five rows of pixels is used to display different pictures (that is, used to display five different pictures in total), so through the longitudinal light splitting effect of the first grating layer 310, the five pictures are displayed in different height ranges respectively, that is, the multi-viewing zone display function is realized.

[0056] For the convenience of description, the embodiment of the present application records the above-mentioned five viewing areas as viewing area 1, viewing area 2, viewing area 3, viewing area 4 and viewing area 5; accordingly, the pixels used to realize the picture display of viewing area 1 are recorded as viewing area 1 pixels, the pixels used to realize the picture display of viewing area 2 are recorded as viewing area 2 pixels, the pixels used to realize the picture display of viewing area 3 are recorded as viewing area 3 pixels, the pixels used to realize the picture display of viewing area 4 are recorded as viewing area 4 pixels, and the pixels used to realize the picture display of viewing area 5 are recorded as viewing area 5 pixels.

[0057] Figure 3 The light transmission path shown in (a) is only shown for one first opening 311 as an example. In the entire display panel 200, there are multiple rows of pixel rows corresponding to different viewing areas. For example, Figure 3 In the example of (a), there are 3 rows of pixels in view zone i for realizing the screen display of view zone i, i∈[1,5], and accordingly, the number of first openings 311 is also 3, and one first opening 311 is opposite to 5 rows of pixels corresponding to different view zones (i.e., pixels in view zone 1 to pixels in view zone 5), and is used to transmit light emitted by these 5 rows of pixels. For the convenience of description, the embodiment of the present application refers to 5 rows of pixels corresponding to different view zones as 1 pixel group, so 1 first opening 311 corresponds to 1 pixel group.

[0058] Figure 4 It is a schematic diagram of a light transmission path of a display module 300 proposed in an embodiment of the present application.

[0059] refer to Figure 4It can be seen that each pixel group includes 5 rows of pixels, and there are 3 pixel groups in the example, namely pixel group 1, pixel group 2 and pixel group 3. Each first opening 311 can be used to transmit the light emitted by the pixel group at the corresponding position, but the light emitted by the pixels used to display the same picture in different pixel groups can be projected within the same height range, that is, within the same viewing area under the longitudinal light splitting effect of the first grating layer 310; for example, in the example, all pixels in the viewing area 1 are respectively distributed in pixel group 1, pixel group 2 and pixel group 3, then based on the light splitting effect of the first grating layer 310, the light emitted by the pixels in the viewing area 1 located in different pixel groups are all projected within the range of the viewing area 1, so as to realize the picture display of the viewing area 1. The same is true for the pixels corresponding to other viewing areas. Based on this, the pictures between each viewing area are independent of each other and do not affect each other, and under the horizontal light splitting effect of the second grating layer 320, the stereoscopic effect of the picture in each viewing area can also be realized.

[0060] Of course, the above Figure 3 , Figure 4 The structure of the display module 300 proposed in the embodiment of the present application is demonstrated by taking 5 viewing zones as an example. The display module 300 proposed in the embodiment of the present application can also be used to realize display of other numbers of viewing zones.

[0061] Based on the above technical solution, through the double grating layer structure and the light blocking part design on each grating layer, after the display module is installed in the display device at a position opposite to the display panel, it can split the light emitted from the pixels of the display panel vertically and horizontally, thereby realizing the multi-viewing zone display function, naked eye stereoscopic display function and stereoscopic display function of multiple viewing zone images of the display device, which helps to improve the user experience.

[0062] In some possible embodiments, reference Figure 3 As shown, the first grating layer 310 is located between the display panel 200 and the second grating layer 320; of course, the positional relationship between the two grating layers can also be as follows Figure 5 shown.

[0063] Figure 5 It is a structural schematic diagram of another display module 300 proposed in an embodiment of the present application.

[0064] and Figure 3 The display module 300 shown is different in that Figure 5 The second grating layer 320 of the display module 300 is shown to be located between the display panel 200 and the first grating layer 310 .

[0065] It can be seen from this that the front and rear positions of the first grating layer 310 and the second grating layer 320 will not affect the realization of the multi-viewing zone display and stereoscopic display functions of the display module 300.

[0066] In some possible embodiments, in order to avoid the overlap between multiple viewing areas formed based on the display module 300, the aperture ratio of the first grating layer 310 in the display module 300 should not be too large, wherein the aperture ratio of the first grating layer 310 is used to represent the ratio between the width of the first opening 312 and the first unit grating width of the first grating layer 310, wherein the first unit grating width is the sum of the width of one first opening 312 and the width of one first light blocking portion 311, so the width of the first opening 312 of the display module 300 accounts for 20% to 50% of the first unit grating width of the first grating layer 310, that is, the aperture ratio of the first grating layer 310 is 20% to 50%. In addition, the center of the first opening 312 can be opposite to the overall center of the N rows of pixels 210 (which can be understood as the above-mentioned one pixel group) of the display panel 200. For example, the center of the first opening 312 is opposite to the overall center of the N rows of pixels 210 of the display panel 200, wherein there can be a certain deviation between the facing positions of the two centers, but the deviation needs to be within a certain deviation range.

[0067] However, the above-mentioned limitation on the aperture ratio of the first grating layer 310 will directly affect the brightness (or intensity) of the light passing through the first grating layer 310, so it will cause differences in the brightness of the images displayed in multiple viewing areas. Figure 3 Taking the display module 300 shown as an example, without considering the light shielding factor of the second grating layer 320, for the first opening 312 located in the middle, the pixels of the viewing zone 3 in the pixel group are directly opposite to the first opening 312, so the picture of the viewing zone 3 should be the brightest. As for the pictures of other viewing zones, since the pixels corresponding to these viewing zones are not directly opposite to the first opening 312, the picture brightness of other viewing zones is darker than that of the viewing zone 3. Similarly, for the second grating layer 320, due to the shielding effect of the second light blocking part 321 on the light, the brightness of the stereoscopic display picture will be dimmed. In view of this, the embodiment of the present application proposes the following display module 300 to dim the light emitted by the pixels, thereby increasing the brightness of the picture of the viewing zone.

[0068] Figure 6 It is a structural schematic diagram of another display module 300 proposed in an embodiment of the present application.

[0069] Compared to Figure 3 The display module 300 shown, Figure 6 The display module 300 shown has the following improvements:

[0070] The first grating layer 310 further includes at least one first light control portion 317 disposed at the first opening 312 ; and / or the second grating layer 320 further includes at least one second light control portion 327 disposed at the second opening 322 .

[0071] refer to Figure 6 As shown, in this embodiment, the first light control portion 317 and the second light control portion 327 may be lenses.

[0072] Based on the physical properties of the lens, since light will be refracted when passing through the lens, the lens can change the propagation path of the light. Based on this, it can be known that the lens can be used to adjust the direction and intensity of the light and has a good dimming effect. Then, after the first light control unit 317 in the form of a lens is introduced into the first grating layer 310, and the second light control unit 327 in the form of a lens is introduced into the second grating layer 320, the light passing through the first grating layer 310 and the second grating layer 320 will be refracted based on the corresponding lenses, so that more light can be emitted outside the display module 300 without being blocked by other components, thereby effectively increasing the brightness of the multi-viewing zone display and / or stereoscopic display.

[0073] The structure in which lenses are arranged in the openings between the plurality of baffles can be understood as a grating layer structure in which a baffle grating and a lens grating are combined.

[0074] Based on the above technical solution, it is helpful to improve the brightness of the picture display, so as to compensate as much as possible for the adverse effect of dark picture caused by the limitation of the aperture ratio of the first grating layer and the second grating layer.

[0075] In addition, the hardware implementation of the first light control part 317 and the second light control part 327 is not limited to one type of lens. Similarly, the hardware implementation of the first light blocking part 311 and the second light blocking part 321 is not limited to one type of baffle.

[0076] Figure 7 It is a structural schematic diagram of a first light control unit 317 proposed in an embodiment of the present application.

[0077] refer to Figure 7 As shown, the first light control unit 317 includes:

[0078] The first transparent electrode portion 330 .

[0079] The second transparent electrode portion 340 .

[0080] The first liquid crystal molecule set 350 is located between the first transparent electrode portion 330 and the second transparent electrode portion 340 .

[0081] When a first electric field exists between the first transparent electrode portion 330 and the second transparent electrode portion 340 , the first liquid crystal molecule set 350 forms a first light control portion 317 .

[0082] In some possible embodiments, the first transparent electrode portion 330 may include a plurality of linear electrodes; and the second transparent electrode portion 340 may be a part of a surface electrode.

[0083] In some possible embodiments, the first transparent electrode portion 330 and the second transparent electrode portion 340 may be made based on indium tin oxide (ITO).

[0084] In some possible embodiments, the first transparent electrode portion 330 and the second transparent electrode portion 340 can be connected to a power source through internal wiring so that the first electric field can be formed between the first transparent electrode portion 330 and the second transparent electrode portion 340. At this time, there is a certain voltage difference between the voltage values ​​respectively input to the first transparent electrode portion 330 and the second transparent electrode portion 340, thereby being able to drive the liquid crystal molecules to rotate.

[0085] In some possible embodiments, when the first transparent electrode portion 330 and the second transparent electrode portion 340 are not powered, the plurality of liquid crystal molecules included in the first liquid crystal molecule set 350 are arranged in a first arrangement form, for example Figure 7 The long axes of the plurality of liquid crystal molecules shown in the figure are aligned with the first direction (i.e. Figure 7 The liquid crystal molecules are parallel to the vertical direction in the liquid crystal molecule assembly 350, and the liquid crystal molecules are translucent. Based on this arrangement, when light passes through the first transparent electrode portion 330 and is incident on the first liquid crystal molecule assembly 350, the multiple liquid crystal molecules in the first liquid crystal molecule assembly 350 will not have a significant effect on the propagation of the light, and the light can pass through the first liquid crystal molecule assembly 350 normally, that is, the first liquid crystal molecule assembly 350 does not play a light control role for the light.

[0086] In some possible embodiments, when the first transparent electrode portion 330 and the second transparent electrode portion 340 are powered on, the first electric field is formed between the two. Since the first transparent electrode portion 330 includes a plurality of line electrodes, Figure 7In the example shown, the number of line electrodes is 5 (i.e., line electrodes 331 to 335). In order to form the first electric field, the voltage relationship input to the plurality of line electrodes is as follows: the voltage input to line electrode 331 is greater than the voltage input to line electrode 332, the voltage input to line electrode 332 is greater than the voltage input to line electrode 333, the voltage input to line electrode 335 is greater than the voltage input to line electrode 334, and the voltage input to line electrode 334 is greater than the voltage input to line electrode 333. Based on the driving of the first electric field, the arrangement of the plurality of liquid crystal molecules in the first liquid crystal molecule set 350 is changed from The first arrangement is converted to the second arrangement, that is, the liquid crystal molecules corresponding to the position of the line electrode 331 rotate in the horizontal direction, and the rotation angle is the largest, which is equal to r1. The rotation angle of the liquid crystal molecules corresponding to the position of the line electrode 332 is equal to r2, r2<r1. The rotation angle of the liquid crystal molecules corresponding to the position of the line electrode 333 is the smallest, which is equal to r3 (for example, r3 can be equal to 0). The rotation angle of the liquid crystal molecules corresponding to the position of the line electrode 334 is equal to r4, which can be equal to r2. The rotation angle of the liquid crystal molecules corresponding to the position of the line electrode 335 is equal to r5, which can be equal to r1. A plurality of liquid crystal molecules with the second arrangement together constitute a light control part, which is equivalent to a lens structure. When light passes through the first transparent electrode portion 330 and is incident on the first liquid crystal molecule set 350 under the influence of the first electric field, the multiple liquid crystal molecules in the first liquid crystal molecule set 350 will have a significant impact on the propagation of the light. The light can also pass through the first liquid crystal molecule set 350 normally, but this is under the refraction effect of the lens structure composed of multiple liquid crystal molecules, passing through the first liquid crystal molecule set 350, that is, the first liquid crystal molecule set 350 plays a light control role on the light.

[0087] It should be noted that the first electric field does not limit the specific voltage values ​​of the surface electrode and the multiple line electrodes. As long as the rotation angles of the multiple liquid crystal molecules can satisfy the angle relationship in the above example, it can be understood that the electric field currently received by the first liquid crystal molecule set is the first electric field.

[0088] It can be seen from this that by controlling the voltage of the two transparent electrode parts of the first light control part 317 based on liquid crystal molecules, the light control function of the first light control part 317 can be turned on and off, and the dynamic adjustment of the intensity of the light control function can be achieved. For example, by changing the voltage input to the transparent electrode part, the refractive index of the first light control part 317 can be controlled.

[0089] In some possible embodiments, since the first grating layer 310 includes at least one first light-controlling portion 317 , the first transparent electrode portion 330 , the second transparent electrode portion 340 and the first liquid crystal molecule set 350 as a whole can be used as a component in the first grating layer 310 .

[0090] Figure 8 is a schematic diagram of the structure of a first grating layer 310 proposed in an embodiment of the present application. Figure 8 (a) is used to show the side cross-sectional view of the first grating layer 310, wherein the side cross-sectional view is through Figure 8 The AA section shown in (b) is obtained; Figure 8 (b) is used to show a stereoscopic image of the first grating layer 310 , and the viewpoint of the stereoscopic image is located above the side of the large surface of the first grating layer 310 .

[0091] refer to Figure 8 As shown, the first grating layer 310 may include:

[0092] The first transparent substrate 313 is used to fix the first transparent electrode portion 330 (ie, a plurality of line electrodes).

[0093] The second transparent substrate 314 is used to fix the second transparent electrode portion 340 (ie, the surface electrode).

[0094] The liquid crystal layer 315 is used to set the first liquid crystal molecule set 350 .

[0095] The liquid crystal layer 315 is located between the first transparent substrate 313 and the second transparent substrate 314 , and the three are arranged in parallel.

[0096] In some possible embodiments, the first transparent substrate 313 and the second transparent substrate 314 may be glass substrates.

[0097] In some possible embodiments, the multiple first transparent electrode portions 330 fixed to the first transparent substrate 313 can be covered as a whole with polyimide (PI) to form a flat electrode layer; the multiple second transparent electrode portions 340 fixed to the second transparent substrate 314 can also be covered as a whole with PI to form a flat electrode layer.

[0098] In some possible embodiments, in order to simplify the process flow and realize the automation of the display module preparation during the preparation process, a plurality of first transparent electrode portions 330 may be arranged on the entire surface of the first transparent substrate 313, and a surface electrode capable of covering the entire surface of the second transparent substrate 314 may be arranged on the second transparent substrate 314, and then the liquid crystal layer 315 is filled with liquid crystal molecules, and the liquid crystal molecules are arranged in the first arrangement form, but only the first transparent electrode portion 330 corresponding to the position of at least one first opening 312 is connected to the internal wiring, so that this part of the first transparent electrode portion 330 can be connected to the power supply, because the liquid crystal molecules at other positions do not need to participate in the light control operation, so there is no need to control the arrangement form of this part of the liquid crystal molecules. For the surface electrode, it is sufficient to connect to the power supply through the internal wiring.

[0099] In some possible embodiments, since the brightness of the pictures formed by the light emitted from different first openings 312 in the first grating layer 310 may be different, the voltage inputs of the multiple first light control parts 317 can be controlled individually so that the multiple first light control parts 317 refract the light to different degrees, respectively, and ultimately achieve the effect of maintaining consistent brightness of the pictures in multiple viewing areas.

[0100] In some possible embodiments, Figure 8 The multiple first light blocking portions 311 in the first grating layer 310 shown may be baffles, and are disposed on the side of the second transparent substrate 314 not covered with the surface electrode; in this embodiment, the first light blocking portion 311 is a baffle structure made of non-transparent material.

[0101] In some possible embodiments, the multiple first light blocking portions 311 of the above-mentioned baffle structure can also be arranged on the first transparent substrate 313, for example, arranged on the side of the first transparent substrate 313 not covered by the wired electrode, or the wire electrode that is not connected by internal routing is replaced with the first light blocking portion 311.

[0102] In some possible embodiments, the above-mentioned design concept of using the first transparent electrode portion 330, the second transparent electrode portion 340, and the first liquid crystal molecule set 350 to form a light control portion can also be applied to the second light control portion 327, that is, the basic structure of the second light control portion 327 can be the same as that of the first light control portion 317.

[0103] Fig. 9 is a schematic diagram of the structure of a second grating layer 320 proposed in an embodiment of the present application. Fig. 9 (a) is used to show the side cross-sectional view of the second grating layer 320, wherein the side cross-sectional view is through Fig. 9 The AA section shown in (b) is obtained; Fig. 9(b) is used to show a stereoscopic image of the second grating layer 320 , and the viewpoint of the stereoscopic image is located on the upper side of the large surface of the second grating layer 320 .

[0104] Fig. 9 The second grating layer 320 is shown in FIG. Figure 8 The difference between the first grating layer 310 shown is that the second light-controlling portion 327 is disposed at a different position in the second grating layer 320 than the first light-controlling portion 317 is disposed in the first grating layer 310 , and as for the internal structure, the two are the same.

[0105] Similarly, the second grating layer 320 can also control the light incident on the second grating layer 320 through the second light control unit 327 based on liquid crystal molecules, and turn on or off the light control function by controlling the power on or off of the second grating layer 320, and adjust the light control degree of the second light control unit 327 by controlling the input voltage. The detailed principle of implementing light control is referred to the above-mentioned embodiment of the first light control unit 317, which will not be repeated here.

[0106] Based on the above technical solution, through the first light control part and the second light control part based on liquid crystal molecules, the light control function of the first grating layer and the second grating layer for light can be realized, so that the brightness of the multi-viewing zone picture can be controlled and the brightness can be kept consistent, and the light control function can be flexibly controlled to be turned on or off, and the brightness of the multi-viewing zone picture can be dynamically adjusted.

[0107] Fig.10 3 is a schematic diagram of the structure of a first light shielding portion 311 proposed in an embodiment of the present application. The first light shielding portion 311 structure is applied to a scene where the incident light is polarized light, for example, the polarization direction of the light incident on the display module is the third direction, then the reference Fig.10 As shown, the first light blocking portion 311 includes:

[0108] refer to Fig.10 As shown, the first light control unit 317 includes:

[0109] The third transparent electrode portion 360 .

[0110] The fourth transparent electrode portion 370 .

[0111] The first polarizing portion 380 is located at a side of the fourth transparent electrode portion 370 away from the third transparent electrode portion 360 . The first polarizing portion 380 is used for transmitting light having a polarization direction in the fourth direction.

[0112] The second liquid crystal molecule set 390 is located between the third transparent electrode portion 360 and the fourth transparent electrode portion 370 .

[0113] Among them, when there is no electric field between the third transparent electrode portion 360 and the fourth transparent electrode portion 370, the second liquid crystal molecule set 390 is used to convert the polarization direction of the above-mentioned light into a fourth direction. When there is a second electric field between the third transparent electrode portion 360 and the fourth transparent electrode portion 370, the second liquid crystal molecule set 390 does not affect the polarization direction of the light.

[0114] In some possible embodiments, the third transparent electrode portion 360 may include a plurality of linear electrodes; and the fourth transparent electrode portion 370 may be a part of a surface electrode.

[0115] In some possible embodiments, the third transparent electrode portion 360 and the fourth transparent electrode portion 370 may be made based on ITO.

[0116] In some possible embodiments, the third transparent electrode portion 360 and the fourth transparent electrode portion 370 may be connected to a power source through internal wiring so that the second electric field may be formed between the third transparent electrode portion 360 and the fourth transparent electrode portion 370. At this time, there is a certain voltage difference between the voltage values ​​respectively input to the third transparent electrode portion 360 and the fourth transparent electrode portion 370, thereby being able to drive the liquid crystal molecules to rotate.

[0117] In some possible embodiments, when the third transparent electrode portion 360 and the fourth transparent electrode portion 370 are not powered, the plurality of liquid crystal molecules included in the second liquid crystal molecule set 390 are arranged in the third arrangement form, for example Fig.10 The multiple liquid crystal molecules shown in the figure are arranged in a spiral form to form a spiral structure, the bottom surface of the spiral structure is the incident surface of the light, and the top of the spiral structure is the exit surface of the light. Then, when light passes through and is incident on the second liquid crystal molecule set 390, the second liquid crystal molecule set 390 arranged in a spiral form can change the polarization direction of the light, that is, from the third direction to the fourth direction, and the first polarizing portion 380 can just transmit the light with the polarization direction of the fourth direction, so the first light blocking portion 311 will not block the propagation of the light, and the light can pass through the first light blocking portion 311 normally.

[0118] In some possible embodiments, when the third transparent electrode portion 360 and the fourth transparent electrode portion 370 are powered on, the second electric field is formed therebetween. Based on the driving of the second electric field, the arrangement of the plurality of liquid crystal molecules in the second liquid crystal molecule set 390 is changed from the third arrangement to the fourth arrangement, that is, the short axes of the plurality of liquid crystal molecules are aligned with the first direction (i.e., Fig.10The plurality of liquid crystal molecules having the fourth arrangement form a structure that is light-transmitting and does not affect the polarization direction of the light. When light is incident on the second liquid crystal molecule set 390 under the influence of the second electric field, the plurality of liquid crystal molecules in the second liquid crystal molecule set 390 will not affect the propagation of the light, and the light can pass through the second liquid crystal molecule set 390 normally. However, when the light reaches the first polarizing unit 380, since the first polarizing unit 380 can only transmit polarized light with a polarization direction of the fourth direction, the current light is intercepted by the first polarizing unit 380 and cannot be emitted, thereby achieving a light blocking function.

[0119] In some possible embodiments, the above examples are illustrated by taking the third direction of light polarization as the vertical direction and the fourth direction as the horizontal direction. The third direction and the fourth direction may also be other polarization directions. Accordingly, the spiral structure formed by multiple liquid crystal molecules in the second liquid crystal molecule set 390 also needs to be adaptively adjusted.

[0120] It can be seen that by controlling the voltage of the two transparent electrode parts of the first light blocking part 311 based on liquid crystal molecules, the light blocking function of the first light blocking part 311 can be turned on and off.

[0121] In some possible embodiments, since the first grating layer 310 includes at least one first light blocking portion 311 , the third transparent electrode portion 360 , the fourth transparent electrode portion 370 , the first polarizing portion 380 and the second liquid crystal molecule set 390 as a whole can be used as a component in the first grating layer 310 .

[0122] Fig.11 is a schematic diagram of the structure of another first grating layer 310 proposed in an embodiment of the present application. Fig.11 (a) is used to show the side cross-sectional view of the first grating layer 310, wherein the side cross-sectional view is through Fig.11 The AA section shown in (b) is obtained; Fig.11 (b) is used to show a stereoscopic image of the first grating layer 310 , and the viewpoint of the stereoscopic image is located above the side of the large surface of the first grating layer 310 .

[0123] refer to Fig.11 As shown, the first grating layer 310 may include:

[0124] The first transparent substrate 313 is used to fix the third transparent electrode portion 360 (ie, a plurality of line electrodes).

[0125] The second transparent substrate 314 is used to fix the fourth transparent electrode portion 370 (i.e., the surface electrode) and the first polarizing portion 380, wherein the fourth transparent electrode portion 370 is arranged on a side surface of the second transparent substrate 314 close to the first transparent substrate 313, and the first polarizing portion 380 is arranged on the other side surface of the second transparent substrate 314 away from the first transparent substrate 313.

[0126] The liquid crystal layer 315 is used to set the first liquid crystal molecule set 350 .

[0127] The liquid crystal layer 315 is located between the first transparent substrate 313 and the second transparent substrate 314 , and the three are arranged in parallel.

[0128] Fig.11 The first grating layer 310 is shown with Figure 8 The overall framework of the first grating layer 310 shown is the same, that is, they all include a first transparent substrate 313, a second transparent substrate 314 and a liquid crystal layer 315. The difference lies in the electrodes fixed to the first transparent substrate 313 and the second transparent substrate 314, and the arrangement of liquid crystal molecules in the liquid crystal layer 315.

[0129] In some possible embodiments, Fig.11 The plurality of first light-controlling portions 317 in the first grating layer 310 shown may be lenses, and are disposed at positions in the liquid crystal layer 315 corresponding to the first openings 312 .

[0130] In some possible embodiments, the design concept of using the third transparent electrode portion 360 , the fourth transparent electrode portion 370 , the first polarizing portion 380 and the first liquid crystal molecule set 390 to form a light blocking portion may also be applied to the second light blocking portion 321 .

[0131] Fig.12 is a schematic diagram of the structure of a second grating layer 320 proposed in an embodiment of the present application. Fig.12 (a) is used to show the side cross-sectional view of the second grating layer 320, wherein the side cross-sectional view is through Fig.12 The AA section shown in (b) is obtained; Fig.12 (b) is used to show a stereoscopic image of the second grating layer 320 , and the viewpoint of the stereoscopic image is located on the upper side of the large surface of the second grating layer 320 .

[0132] Fig.12 The second grating layer 320 is shown in FIG. Fig.11 The difference between the first grating layer 310 shown is that the position of the second light blocking portion 321 in the second grating layer 320 is different from the position of the first light blocking portion 311 in the first grating layer 310, and the internal structures of the two are the same.

[0133] Similarly, the second grating layer 320 based on the second light blocking portion 321 based on the liquid crystal molecules can also realize the function of shielding the light incident on the second grating layer 320, and the light blocking function can be turned on or off by controlling the power on or off of the second grating layer 320. The detailed principle of realizing light control refers to the above-mentioned embodiment related to the first light blocking portion 311, which will not be repeated here.

[0134] Based on the above technical solution, through the first light blocking part and the second light blocking part based on liquid crystal molecules, the light blocking function of the first grating layer and the second grating layer for light can be realized, and the opening or closing of the light blocking function can be flexibly controlled, thereby controlling the opening or closing of the multi-viewing zone display function of the display module and the opening or closing of the stereoscopic display function.

[0135] Fig.13 It is a side cross-sectional view of another first grating layer 310 or second grating layer 320 proposed in an embodiment of the present application.

[0136] In some possible embodiments, Figure 7 The first light control unit 317 is shown Fig.10 The first light shielding portion 311 shown is fused to form Fig.13 The structure of the first grating layer 310 or the second grating layer 320 is shown.

[0137] refer to Fig.13 As shown, the first grating layer 310 may include the first light blocking portion 311 based on liquid crystal molecules and the first light controlling portion 317 at the same time. These two components are alternately arranged. However, it should be noted that the position where the first light controlling portion 317 is arranged corresponds to the position of the first opening 312 of the first grating layer 310 .

[0138] Similarly, the main components of the second grating layer 320 are the same as those of the first grating layer 310, so the second grating layer 320 can also reuse the above Fig.11 The structure is different only in the extension direction of the second light controlling portion 327 and the second light blocking portion 321, so that a first angle α formed between a vertical projection of the second light blocking portion 321 to the first light blocking portion 311 and the first light blocking portion 311 is less than 90°.

[0139] The following shows that the module 300 includes Fig.13 Taking the first grating layer 310 and the second grating layer 320 as examples, the working mode of the display module 300 is introduced.

[0140] When the first grating layer 310 of the display module 300 is energized, an electric field is formed between the first transparent electrode portion 330 and the second transparent electrode portion 340 of the first grating layer 310, so that the multiple first liquid crystal molecule sets 350 and at least one second liquid crystal molecule set 390 distributed between the two electrode portions are arranged in a direction, so that the first grating layer 310 as a whole forms a grating structure with a combined grating function of a baffle grating and a lens grating. At this time, the first grating layer 310 performs longitudinal spectral splitting on the received light, so that the light from different pixel rows is projected into different viewing areas, thereby realizing the multi-viewing area display function of the display module 300.

[0141] On the contrary, when the first grating layer 310 of the display module 300 is powered off, the multiple first liquid crystal molecule sets 350 and the at least one second liquid crystal molecule set 390 will not be arranged in a directional manner, and will not block or control the light. Moreover, these two types of liquid crystal molecules are made of transparent materials, so the first grating layer 310 will not split the light longitudinally, thereby realizing the single viewing area display function of the display module 300.

[0142] Similarly, when the second grating layer 320 of the display module 300 is energized, an electric field is formed between the first transparent electrode portion 330 and the second transparent electrode portion 340 of the second grating layer 320, so that the multiple first liquid crystal molecule sets 350 and the at least one second liquid crystal molecule set 390 distributed between the two electrode portions are arranged in a directionally arranged manner, so that the second grating layer 320 as a whole forms a grating structure with a combined grating function of a baffle grating and a lens grating. At this time, the second grating layer 320 performs transverse spectroscopy on the received light, thereby realizing the stereoscopic display function of the display module 300, also known as the three-dimensional display function.

[0143] When the second grating layer 320 of the display module 300 is powered off, the plurality of first liquid crystal molecule sets 350 and the at least one second liquid crystal molecule set 390 will not be arranged in a directional manner, and will not block or control the light. Furthermore, the two types of liquid crystal molecules are made of transparent materials, so the second grating layer 320 will not split the light laterally, thereby realizing the planar display function of the display module 300, also known as the two-dimensional display function.

[0144] In summary, when the first grating layer 310 and the second grating layer 320 are in different power-on states, the display functions corresponding to each layer can be combined. After the combination, the following combination results are obtained:

[0145] When the first grating layer 310 and the second grating layer 320 are powered off simultaneously, the display module 300 is in a single viewing area planar display mode.

[0146] When the first grating layer 310 is powered on and the second grating layer 320 is powered off, the display module 300 is in a multi-viewing zone planar display mode.

[0147] When the first grating layer 310 is powered off and the second grating layer 320 is powered on, the display module 300 is in a single viewing area stereoscopic display mode.

[0148] When the first grating layer 310 and the second grating layer 320 are powered on simultaneously, the display module 300 is in a multi-viewing zone stereoscopic display mode.

[0149] Based on the above technical solution, the display module can realize flexible switching of different display modes of the display module based on the different power-on states of the first grating layer and the second grating layer, so that the display device equipped with the display module has more screen display functions and can flexibly switch between multiple screen display functions, which helps to improve the user experience.

[0150] Fig.14 It is a schematic diagram of the structure of another second grating layer 320 proposed in an embodiment of the present application.

[0151] Compared with any of the second grating layers 320 proposed in the above embodiments, Fig.14 The second light blocking portion 321 in the second grating layer 320 shown in the figure may include multiple width values. That is, the aperture ratio of the second opening 322 in the second grating layer 320 is a variable value. Fig.14 As shown, the opening size a1 corresponding to the first position A1 of the second opening 322 in the example is different from the opening size a2 corresponding to the second position A2 of the second opening 322. This is because the widths corresponding to different positions of the second light shielding portion 321 may be different, and the light transmission amount at different positions of the second grating layer 320 may be controlled, thereby adjusting the parallax of the left and right eye images, which helps to form a better three-dimensional effect, and can better control the propagation direction of the light, reduce the diffraction and scattering of the light at the edge of the second light shielding portion 321, thereby helping to improve the brightness of the three-dimensional image.

[0152] In addition, an embodiment of the present application further proposes a display device, which includes a display panel and any one of the display modules proposed in the embodiment of the present application, and the display module is opposite to the display panel.

[0153] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0154] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: The display module is opposite to the display panel of the display device, and the display module includes: a first grating layer and a second grating layer, The first grating layer includes a plurality of first light-blocking portions distributed side by side along a first direction, and a first opening exists between two adjacent first light-blocking portions; The second grating layer includes a plurality of second light shielding portions distributed side by side along a second direction, and a second opening exists between two adjacent second light shielding portions, and a first angle formed between a vertical projection of the second light shielding portion onto the first light shielding portion and the first light shielding portion is less than 90°; Wherein, the first grating layer further includes at least one first light control portion, and the first light control portion is located at the first opening; and / or, the second grating layer further includes at least one second light control portion, and the second light control portion is located at the second opening.

2. The display module according to claim 1, characterized in that: The first grating layer is located between the display panel and the second grating layer; or the second grating layer is located between the display panel and the first grating layer.

3. The display module according to claim 1 or 2, characterized in that: The first light shielding portion or the second light shielding portion is a baffle.

4. The display module according to any one of claims 1 to 3, characterized in that: The first light control unit or the second light control unit is a lens.

5. The display module according to claim 1 or 2, characterized in that: The first light control unit or the second light control unit includes: a first transparent electrode portion; a second transparent electrode portion; a first liquid crystal molecule set, the first liquid crystal molecule set being located between the first transparent electrode portion and the second transparent electrode portion; When a first electric field exists between the first transparent electrode portion and the second transparent electrode portion, the first liquid crystal molecules gather to form the first light control portion.

6. The display module according to claim 1, 2 or 5, characterized in that: The polarization direction of the light incident on the display module is a third direction, and the first light shielding portion or the second light shielding portion includes: a third transparent electrode portion; a fourth transparent electrode portion; a first polarizing portion, the first polarizing portion being located at a side of the fourth transparent electrode portion away from the third transparent electrode portion, and being used for transmitting light having a polarization direction in a fourth direction; a second liquid crystal molecule set, wherein the second liquid crystal molecule set is located between the third transparent electrode portion and the fourth transparent electrode portion; Among them, when there is no electric field between the third transparent electrode portion and the fourth transparent electrode portion, the second liquid crystal molecule set is used to convert the polarization direction of the light into the fourth direction, and when there is a second electric field between the third transparent electrode portion and the fourth transparent electrode portion, the second liquid crystal molecule set does not affect the polarization direction of the light.

7. The display module according to any one of claims 1 to 6, characterized in that: The width of the first opening accounts for 20% to 50% of the unit grating width of the first grating layer, and the unit grating width is the sum of the width of one first opening and the width of one first light blocking portion.

8. The display module according to any one of claims 1 to 7, characterized in that: The second light blocking portion includes a plurality of width values.

9. The display module according to any one of claims 1 to 8, characterized in that: The pixels of the display panel are composed of multiple sub-pixels, and the multiple sub-pixels are arranged along a fifth direction, and the fifth direction is perpendicular to the first direction; the number of the first openings is N, and N is greater than 1. The center of the first opening is opposite to the overall center of N rows of pixels of the display panel, and each row of pixels in the N rows of pixels is used to display different pictures.

10. A display device, characterized in that: It comprises a display panel and a display module as claimed in any one of claims 1 to 9, wherein the display module is opposite to the display panel.

Images