Display device

Abstract

The invention relates to a display device. The display device comprises a backlight module, a light splitting layer, a display panel and a lens group, the display panel comprises a plurality of sub-pixels; the lens group comprises a plurality of lenses, and one lens is arranged corresponding to at least two sub-pixels; the light splitting layer is used for enabling light emitted by the backlight module to be incident to the display panel from a first direction at a first moment and to be incident to the display panel from a second direction at a second moment. The light emitted by the backlight module is incident to the display panel from the first direction at the first moment and incident to the display panel from the second direction at the second moment through the light splitting layer, and only one person watches the light at one moment, so that time division multiplexing of sub-pixels of the display panel can be realized, and the resolution ratio of the display panel can be greatly reduced under the condition that the resolution ratio of the display panel is not greatly reduced. Three-dimensional display for multiple persons to watch is realized; as the sub-pixels are time division multiplexing, the number of the sub-pixels corresponding to one lens is small, the influence of the lens on flat panel display is small, and the flat panel display is almost lossless.

Description

Technical Field

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

[0002] With the development of display technology, display devices can switch between flat display and stereoscopic display to meet different application scenarios.

[0003] In order to achieve the switching between plane display and stereoscopic display, the display device usually includes multiple lenses. For a display device for a single person to watch, when realizing stereoscopic display, only two viewpoints need to be provided, one for the left eye and the other for the right eye to watch. At this time, the picture is divided into pictures corresponding to the two viewpoints, and the resolution of the stereoscopic display is reduced by half; when realizing plane display, the number of sub-pixels covered by each lens is small, the lens has little impact on the plane display, and the plane display is almost lossless. However, for a display device for multiple people to watch, when realizing stereoscopic display, multiple viewpoints need to be provided, and the resolution of the stereoscopic display is reduced more, and the resolution is low; when realizing plane display, the number of sub-pixels covered by each lens is large, the picture has a strong sense of jaggedness, and the picture display effect is poor. Summary of the invention

[0004] The embodiment of the present application provides a display device to solve the technical problems that the display device has a strong jagged feeling in the picture when displaying in a plane, the picture display effect is poor, and the resolution is low in the three-dimensional display.

[0005] In order to achieve the above object, according to a first aspect of the present application, a display device is provided, comprising:

[0006] Backlight module;

[0007] A light splitting layer, arranged on the light emitting side of the backlight module;

[0008] A display panel is arranged on a side of the light splitting layer away from the backlight module, and the display panel includes a plurality of sub-pixels;

[0009] A lens group is arranged on a side of the display panel away from the backlight module, the lens group includes a plurality of lenses, and one lens is arranged corresponding to at least two sub-pixels;

[0010] The light splitting layer is used to make the light emitted by the backlight module incident on the display panel from a first direction at a first moment and from a second direction at a second moment. The first moment and the second moment alternate, and the first direction and the second direction are different.

[0011] Optionally, the backlight module is a collimated light source, the backlight module includes a plurality of partitions, and the partitions are alternately lit; the light splitting layer includes a plurality of light splitting surfaces facing the backlight module, and one of the partitions corresponds to one of the light splitting surfaces;

[0012] Among them, at the first moment, the light emitted from one of the partitions is incident on the corresponding splitting surface and is incident on the display panel along the first direction; at the second moment, the light emitted from another of the partitions is incident on the corresponding splitting surface and is incident on the display panel along the second direction.

[0013] Optionally, the light-splitting layer includes a plurality of convex portions, and a surface of one side of the convex portion close to the backlight module forms at least two light-splitting surfaces, and two adjacent light-splitting surfaces are arranged at an angle.

[0014] Optionally, the cross-sectional pattern of the convex portion is an axisymmetric figure, and the axis of symmetry of the cross-sectional pattern is perpendicular to the display surface of the display panel.

[0015] Optionally, the light-splitting surface is a plane, one convex portion includes at least three light-splitting surfaces, and the included angles of any two adjacent light-splitting surfaces in one convex portion are the same.

[0016] Optionally, the convex portion extends along a column direction of the display panel, and any two adjacent light splitting surfaces are connected.

[0017] Optionally, the backlight module comprises a stacked surface light source and a light valve layer, and the light valve layer is arranged between the surface light source and the light splitting layer;

[0018] Wherein, at the first moment, the light valve layer is configured to allow light from one of the partitions to pass through and to block light from other partitions; at the second moment, the light valve layer is configured to allow light from another partition to pass through and to block light from other partitions.

[0019] Optionally, the display device includes a control unit, which obtains timing information of the first moment and the second moment, and controls the display panel to output a first display signal according to the timing information.

[0020] Optionally, the display device further includes a sensing unit, wherein the sensing unit is used to obtain pupil coordinates of the viewer, and the control unit adjusts the first display signal according to the pupil coordinates.

[0021] Optionally, the sensing unit acquires the pupil coordinates in real time, and when the sensing unit fails to detect the pupil coordinates, the control unit adjusts the display signal to a second display signal.

[0022] In the display device of the embodiment of the present application, the light emitted by the backlight module is incident on the display panel from a first direction at a first moment, and is incident on the display panel from a second direction at a second moment through the light splitting layer, thereby realizing time-sharing multiplexing of the sub-pixels of the display panel, wherein, at the first moment, the light corresponding to the first direction is used for one person to watch, and at the second moment, the light corresponding to the second direction is used for another person to watch, thereby realizing a stereoscopic display for multiple people to watch without significantly reducing the resolution of the display panel; since the sub-pixels are time-sharing multiplexed, the number of sub-pixels corresponding to one lens is small, the influence of the lens on the plane display is small, and the plane display is almost lossless.

[0023] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0025] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0026] Figure 1 is a schematic diagram of a top view of a display device provided in an exemplary embodiment of the present disclosure;

[0027] Figure 2 yes Figure 1 Cross-sectional view at CC in FIG.

[0028] Figure 3 yes Figure 2 A schematic diagram of the optical path of a convex portion;

[0029] Figure 4 yes Figure 3 The principle illustration of the visual area corresponding to the convex part at different times;

[0030] Figure 5 yes Figure 4 A schematic diagram of the superposition of the view areas corresponding to different moments in ;

[0031] Figure 6 yes Figure 4 Schematic diagram of the distribution of the three viewing areas in ;

[0032] Figure 7 yes Figure 2 A schematic diagram of the optical path of another convex portion;

[0033] Figure 8 is a flowchart of a sensing unit provided in an exemplary embodiment of the present disclosure;

[0034] Fig. 9 is a flowchart of a control unit provided in an exemplary embodiment of the present disclosure.

[0035] Description of reference numerals:

[0036] Backlight module 10, partition 10a, surface light source 11, light valve layer 12;

[0037] The light splitting layer 20, the convex portion 21, and the light splitting surface 21a;

[0038] Display panel 30, display area AA, non-display area NA, sub-pixel 31;

[0039] Lens group 40, lens 41;

[0040] A control unit 50;

[0041] Sensing unit 60;

[0042] An angle B between two adjacent light splitting surfaces 21a;

[0043] A first viewing area A1, a second viewing area A2, and a third viewing area A3;

[0044] A first direction D1, a second direction D2, a third direction D3, and a fourth direction D4;

[0045] The row direction X of the display panel 30 and the column direction Y of the display panel 30 . DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0047] In order to achieve the above-mentioned object, according to a first aspect of the present application, a display device is provided, such as Figures 1 to 6As shown, it includes a backlight module 10, a beam splitting layer 20, a display panel 30 and a lens group 40; the beam splitting layer 20 is arranged on the light emitting side of the backlight module 10; the display panel 30 is arranged on the side of the beam splitting layer 20 away from the backlight module 10, and the display panel 30 includes a plurality of sub-pixels 31; the lens group 40 is arranged on the side of the display panel 30 away from the backlight module 10, and the lens group 40 includes a plurality of lenses 41, and one lens 41 is arranged corresponding to at least two sub-pixels 31; wherein, the beam splitting layer 20 is used to make the light emitted from the backlight module 10 incident on the display panel 30 from a first direction D1 at a first moment t1, and incident on the display panel 30 from a second direction D2 at a second moment t2, the first moment t1 and the second moment t2 alternate, and the first direction D1 and the second direction D2 are different.

[0048] The display device can realize planar display and stereoscopic display.

[0049] The display panel 30 may be a non-self-luminous panel, such as a liquid crystal panel. The backlight module 10 is used to provide a backlight source for the display panel 30 .

[0050] like Figure 1 As shown, the display panel 30 includes a display area AA and a non-display area NA arranged outside the display area AA. The display area AA can be used to display images. The display area AA has a plurality of sub-pixels 31, such as red sub-pixels, green sub-pixels, and blue sub-pixels. Sub-pixels 31 of different colors can display different colors, thereby realizing color display. The non-display area NA can be provided with a driving circuit, such as a gate driving circuit. The driving circuit is used to drive the sub-pixels 31 to display.

[0051] In one embodiment, the display panel 30 is a liquid crystal panel. The display panel 30 includes a first substrate and a second substrate that are arranged opposite to each other and spaced apart, and a liquid crystal layer is arranged between the first substrate and the second substrate. A pixel electrode may be arranged on the first substrate, and a common electrode may be arranged on the second substrate. Liquid crystal molecules in the liquid crystal layer are deflected in the electric field formed by the pixel electrode and the common electrode. When the liquid crystal molecules are deflected to different angles, the light transmittance of the liquid crystal molecules is different. By controlling the size of the electric field, the light transmittance of the corresponding area can be adjusted, thereby realizing the brightness control of the display screen.

[0052] Optionally, in some embodiments, the pixel electrode and the common electrode may both be disposed on the first substrate.

[0053] The display panel 30 also includes a color filter layer, which includes red color resistance, green color resistance, and blue color resistance. The sub-pixel 31 corresponding to the red color resistance is a red sub-pixel, the sub-pixel 31 corresponding to the green color resistance is a green sub-pixel, and the sub-pixel 31 corresponding to the blue color resistance is a blue sub-pixel. When white light is incident on the color resistance of the corresponding color, light with the same color as the color resistance can pass through, while light with a different color from the color resistance is blocked. The color filter layer can convert the white light emitted by the backlight module 10 into colored light of the corresponding color.

[0054] like Figure 1 and Figure 2 As shown, the lens group 40 includes a plurality of lenses 41. The lens 41 may be a cylindrical lens or a block lens. A cylindrical lens refers to a cylindrical lens 41 that is in a long strip shape and has a cross section consisting of two arcs or a circular arc and a straight line. Figure 2 As shown, when the cross section of the cylindrical lens is composed of an arc and a straight line, the arc may be located on a side of the straight line away from the display panel 30 .

[0055] The difference between block lens and cylindrical lens lies in length and width. Cylindrical lens is long strip, the length of cylindrical lens refers to the dimension in the extension direction of cylindrical lens, and the width of cylindrical lens refers to the dimension in the direction perpendicular to the length. The length of cylindrical lens is much greater than the width. The length and width of block lens are equivalent.

[0056] like Figure 1 and Figure 2 As shown, one lens 41 is provided corresponding to at least two sub-pixels 31. When the lens 41 is a cylindrical lens, the lens 41 covers at least two sub-pixels 31 in the row direction X of the display panel 30, and may cover more sub-pixels 31 in the length direction. The angle between the length direction of the cylindrical lens and the row direction X of the display panel 30 may be a right angle or an acute angle. When the angle between the length direction of the cylindrical lens and the row direction X of the display panel 30 is an acute angle, the moiré phenomenon during display may be improved.

[0057] When the lens 41 is a block lens, the lens 41 covers at least two sub-pixels 31 in at least the row direction X of the display panel 30. The row direction X of the display panel 30 refers to the direction of the horizontal viewing angle, that is, Figure 1 Horizontal direction in .

[0058] The lens group 40 refracts the light emitted from the sub-pixels 31 of the display panel 30 to generate parallax between the left eye and the right eye of a person, thereby obtaining a spatial stereoscopic image and achieving a stereoscopic display effect that can be viewed with the naked eye.

[0059] like Figures 2 to 5As shown, the light splitting layer 20 is disposed between the backlight module 10 and the display panel 30. The light splitting layer 20 is used to direct the light emitted by the backlight module 10 to be incident on the display panel 30 along at least two different directions in a time sequence.

[0060] like Figure 3 As shown, the light emitted from the backlight module 10 is incident on a surface of the light splitting layer 20 close to the backlight module 10 , and is refracted by the light splitting layer 20 and emitted from a surface of the light splitting layer 20 far from the backlight module 10 .

[0061] The light splitting layer 20 is used to make the light emitted from the backlight module 10 incident on the display panel 30 from the first direction D1 at the first moment t1 and incident on the display panel 30 from the second direction D2 at the second moment t2. The first moment t1 and the second moment t2 are alternate.

[0062] Specifically, see Figure 4 , (a) corresponds to the first moment t1 to form the first viewing area A1, and (b) corresponds to the second moment t2 to form the second viewing area A2. At the first moment t1, the light in the backlight module 10 is incident on the spectral layer 20, and after being refracted by the spectral layer 20, it is emitted from the first direction D1 and enters the display panel 30, forming the first viewing area A1; at the second moment t2, the light in the backlight module 10 is incident on the spectral layer 20, and after being refracted by the spectral layer 20, it is emitted from the second direction D2 and enters the display panel 30, forming the second viewing area A2. The range of the display panel 30 illuminated by the light is the viewing area, and the picture can be viewed in the viewing area; the range not illuminated by the light is the dark area, and the display picture cannot be seen in the dark area. By controlling the direction of the light incident on the display panel 30 in time sequence, multiple viewing areas can be formed on the display panel 30 in sequence.

[0063] It should be noted that at a time, there is only one viewing area. Viewers in the viewing area can view the display image, while other viewers in the dark area cannot view the display image. For ease of description, the viewer in the first viewing area is called viewer A, and the viewer in the second viewing area is called viewer B.

[0064] At the first moment t1, viewer A sees the display picture. At the second moment t2, viewer B sees the display picture. The first moment t1 and the second moment t2 alternate. At the next first moment t1, viewer A sees the display picture, and at the next second moment t2, viewer B sees the display picture. The first moment t1 is short, and due to the persistence of vision effect of the human eye, viewer A can synthesize multiple adjacent pictures at the first moment t1 into a continuous picture in his mind. Viewer B can synthesize multiple adjacent pictures at the second moment t2 into a continuous picture in his mind. As a result, both viewer A and viewer B can see the continuous display picture.

[0065] Through the above arrangement, a continuous viewing area can be formed in space for multiple people to watch together. Since the sub-pixels 31 of the display panel 30 are time-division multiplexed at the first moment t1 and the second moment t2, and only one person watches at each moment, the lens group 40 can be designed according to the single-person viewing, and each lens 41 covers a small number of sub-pixels 31, so the plane display effect is almost lossless, and the resolution of the three-dimensional display is greatly improved.

[0066] It should be noted that when the number of viewers increases, for example, when three people are required to watch, the third time t3 and the third direction D3 are added. Figure 4 (c) corresponds to the third time t3 to form the third viewing area A3. At the third time t3, the third viewing area A3 is formed for the third viewer to watch. The first time t1, the second time t2, and the third time t3 are alternated. When the number of people increases, the corresponding time and direction are added. It will not be repeated here.

[0067] In order to make the multiple viewing areas staggered and not affect each other, the first direction D1 and the second direction D2 are different.

[0068] Optionally, the first direction D1 and the second direction D2 form an obtuse angle to increase the angle difference between the first viewing area A1 and the second viewing area A2 and reduce light crosstalk between the two viewing areas.

[0069] Alternatively, if Figure 2 As shown, the backlight module 10 is a collimated light source, and the backlight module 10 includes a plurality of partitions 10a, which are alternately lit; the light splitting layer 20 includes a plurality of light splitting surfaces 21a facing the backlight module 10, and one partition 10a corresponds to one light splitting surface 21a; wherein, at a first moment t1, light emitted from a partition 10a is incident on the corresponding light splitting surface 21a, and is incident on the display panel 30 along a first direction D1; at a second moment t2, light emitted from another partition 10a is incident on the corresponding light splitting surface 21a, and is incident on the display panel 30 along a second direction D2.

[0070] like Figure 2 As shown, a collimated light source refers to light emitted in a parallel direction, and the emission direction of the light is perpendicular to the light emitting surface of the backlight module 10. The backlight module 10 includes a plurality of partitions 10a, and each partition 10a can be lit separately. For example, each partition 10a can be provided with a plurality of light sources, and the light sources can be LED, Mini-LED, Mciro-LED, etc. The plurality of light sources of each partition 10a are controlled by a circuit, and the light sources of each partition 10a can be lit separately.

[0071] In some embodiments, Figure 2As shown, the light splitting layer 20 includes a plurality of light splitting surfaces 21 a. Each light splitting surface 21 a can refract or transmit light. At least part of the light splitting surfaces 21 a are not perpendicular to the light emitting direction of the backlight module 10.

[0072] like Figure 3 As shown, when the light splitting surface 21a is not perpendicular to the light emitting direction of the backlight module 10, the light emitted by the backlight module 10 is refracted on the light splitting surface 21a and then deflected. The light with changed direction is incident on the display panel 30, as shown in FIG. Figure 3 The light emitted along the first direction D1 and the second direction D2 is the light after the direction is changed. When the light splitting surface 21a is perpendicular to the light emitting direction of the backlight module 10, the light emitted by the backlight module 10 passes through the light splitting surface 21a and enters the display panel 30. At this time, the direction of the light is not deflected. Figure 3 The light emitted along the third direction D3 is an undeflected light.

[0073] Since the first direction D1 is different from the second direction D2 , the light splitting surface 21 a forms at least two angles with the light emitting direction of the backlight module 10 , so that the light emitted after passing through the light splitting surface 21 a can be emitted in two different directions.

[0074] In some embodiments, Figure 2 and Figure 3 As shown, the backlight module 10 has a plurality of partitions 10a, and at a first moment t1, after the light of a portion of the partitions 10a is incident on the corresponding splitting surface 21a, it is emitted from the first direction D1 and incident on the display panel 30. At a second moment t2, after the light of another portion of the partitions 10a is incident on the corresponding splitting surface 21a, it is emitted from the second direction D2 and incident on the display panel 30.

[0075] It should be noted that the correspondence between a subarea 10 a and a light splitting surface 21 a means that light emitted from a subarea 10 a will be incident on a corresponding light splitting surface 21 a , and will not be incident on other non-corresponding light splitting surfaces 21 a .

[0076] Alternatively, if Figure 5 As shown, at the third moment t3, another viewing area different from the first moment t1 and the second moment t2 is formed, namely, the third viewing area A3.

[0077] Alternatively, if Figure 7 As shown, at the fourth moment t4, another viewing area, namely the fourth viewing area A4, is formed.

[0078] Alternatively, if Figure 2 As shown, the light splitting layer 20 includes a plurality of convex portions 21 , and a surface of a convex portion 21 close to the backlight module 10 forms at least two light splitting surfaces 21 a , and two adjacent light splitting surfaces 21 a are arranged at an angle.

[0079] The convex portion 21 protrudes toward one side of the backlight module 10, and a plurality of light splitting surfaces 21a are formed on the surface of the convex portion 21 facing the backlight module 10. Each convex portion 21 has at least two light splitting surfaces 21a, so that light from two different partitions 10a of the backlight module 10 can be emitted from at least two different directions.

[0080] like Figure 3 As shown, in each convex portion 21, two adjacent light splitting surfaces 21a form an angle B. The angle means that the two light splitting surfaces 21a are not parallel.

[0081] In some embodiments, the material of the protrusion 21 can be a transparent organic material, such as polyimide, polycarbonate, polyethylene terephthalate, etc.

[0082] Alternatively, if Figure 3 As shown, the cross-sectional pattern of the protrusion 21 is an axisymmetric pattern, and the symmetry axis of the cross-sectional pattern is perpendicular to the display surface of the display panel 30. The cross section refers to the direction X along the row of the display panel 30, that is, Figure 1 The cross-section formed after cutting in the CC direction in the figure. The cross-sectional pattern of the convex portion 21 is an axisymmetric figure, so that the first direction D1 and the second direction D2 are symmetrical. That is to say, the first direction D1 is located on the left, the second direction D2 is located on the right, and the first direction D1 and the second direction D2 are symmetrical about the neutral plane of the display panel 30. Among them, the neutral plane refers to a plane that is perpendicular to the display surface of the display panel 30 and passes through the longitudinal center line of the display panel 30. The longitudinal center line extends along the column direction Y of the display panel 30. Through the above arrangement, multiple viewers can be located within the range of the horizontal viewing angle of the display panel 30, and the range of the viewing area on the left and right sides of the display panel 30 is symmetrical.

[0083] Alternatively, if Figure 3 As shown, the light splitting surface 21 a is a plane, a convex portion 21 includes at least three light splitting surfaces 21 a , and the included angle B between any two adjacent light splitting surfaces 21 a in a convex portion 21 is the same.

[0084] like Figure 3 As shown, each convex portion 21 includes three light splitting surfaces 21a arranged at an angle. When the angles B of two adjacent light splitting surfaces 21a are the same, the angles formed between the first direction D1 and the third direction D3, and the angles formed between the second direction D2 and the third direction D3 are equal. Thus, the viewing area of ​​the display panel 30 is divided into three viewing areas of the same size, so that each viewing area has the same viewing angle range, ensuring the viewing effect of each viewing area.

[0085] Figure 7 The examples in Figure 3 The embodiment of the present invention is that the convex portion includes more light splitting surfaces 21a. Figure 7As shown, each convex portion 21 includes four light splitting surfaces 21a arranged at an angle. When the angles B of two adjacent light splitting surfaces 21a are the same, the angles formed between the first direction D1 and the third direction D3, the angles formed between the second direction D2 and the fourth direction D4, and the angles formed between the third direction D3 and the fourth direction D4 are equal. Thus, the viewing area of ​​the display panel 30 is divided into four viewing areas of the same size, so that each viewing area has the same viewing angle range, ensuring the viewing effect of each viewing area.

[0086] In some other embodiments, when the number of the protrusions 21 increases, more viewing areas can be formed.

[0087] Optionally, combine Figure 1 and Figure 2 The convex portion 21 extends along the column direction Y of the display panel 30 , and any two adjacent light splitting surfaces 21 a are connected.

[0088] The protrusion 21 extends along the column direction Y of the display panel 30 , which means that the protrusion 21 may be in a long strip shape, and a cross section of the protrusion 21 is perpendicular to the column direction Y of the display panel 30 .

[0089] Any two adjacent light splitting surfaces 21a are connected to each other, which means that in each convex portion 21, two adjacent light splitting surfaces 21a are connected to each other, and in two adjacent convex portions 21, two light splitting surfaces 21a close to each other are also connected to each other. Through the above arrangement, two adjacent convex portions 21 can be connected to each other, so that the sub-pixels 31 in any area of ​​the display panel 30 can be illuminated by the light emitted from the convex portion 21.

[0090] Alternatively, if Figure 2 As shown, the backlight module 10 includes a stacked surface light source 11 and a light valve layer 12, and the light valve layer 12 is arranged between the surface light source 11 and the light splitting layer 20; wherein, at a first moment t1, the light valve layer 12 is configured to allow light from one partition 10a to pass through, and to block light from other partitions 10a; at a second moment t2, the light valve layer 12 is configured to allow light from another partition 10a to pass through, and to block light from other partitions 10a.

[0091] The surface light source 11 refers to a light source whose light-emitting surface is a plane after being lit, and light can be emitted to the surrounding from multiple directions. The backlight module 10 can be a direct-type backlight or an edge-type backlight.

[0092] In some embodiments, the backlight module 10 is a direct-type backlight, and multiple light sources are arranged on the light-emitting surface of the backlight module 10. The backlight module 10 may also include multiple optical films, which may be diffusers, prisms, etc. The optical films may enhance the brightness of the backlight module 10 and the uniformity of light.

[0093] In other embodiments, the backlight module 10 is an edge-entry backlight. Multiple light sources are arranged on one side of the backlight module 10, and the backlight module 10 further includes a light guide plate and an optical film. The light guide plate is used to convert the light source on one side into a surface light source 11. The optical film can improve the brightness of the backlight module 10 and the uniformity of light.

[0094] In some embodiments, the light source may be LED, Mini-LED, Mciro-LED, etc.

[0095] The light valve layer 12 can be used to control the light to pass through or not. For example, the light valve layer 12 can be a liquid crystal slit. The liquid crystal molecules in the liquid crystal slit are deflected under the action of the electric field. The liquid crystal molecules can be deflected or not deflected by controlling the electric field applied to the liquid crystal molecules, thereby allowing light to pass through or blocking light from passing through.

[0096] The light valve layer 12 can convert the light emitted by the surface light source 11 into collimated light, so that the light of a subarea 10 a can correspond to the light splitting surface 21 a.

[0097] Specifically, the light valve layer 12 can control the light of some subareas 10a to pass through at the first moment t1, and the light of other subareas 10a to be blocked at the first moment t1; and the light of other subareas 10a to pass through at the second moment t2, and the light of other subareas 10a to be blocked at the second moment t2. Through the above settings, different subareas 10a of the backlight module 10 can be lit up in sequence, thereby providing backlight sources for different viewing areas of the display panel 30 in sequence.

[0098] Alternatively, if Figure 6 and Fig. 9 As shown, the display device includes a control unit 50, which obtains timing information of a first moment t1 and a second moment t2, and controls the display panel 30 to output a first display signal according to the timing information.

[0099] like Fig. 9 As shown, the control unit 50 obtains the first moment t1 of the backlight module 10, and controls the display panel 30 to output the corresponding first display signal at the first moment t1; the control unit 50 obtains the second moment t2, and controls the display panel 30 to output the corresponding first display signal at the second moment t2.

[0100] The first display signal is a stereoscopic display signal. The first display signal at the first moment t1 is for the viewer in the first viewing area A1 to watch, and the first display signal at the second moment t2 is for the viewer in the second viewing area A2 to watch. Due to different viewing angles, the first display signals at the two moments can be different display images.

[0101] The control unit 50 can process the original planar display signal to form a corresponding stereoscopic display signal, and this process is called image arrangement. The control unit 50 performs interlaced image arrangement according to the image arrangement algorithm, and sequentially provides corresponding display signals for the first viewing area A1, the second viewing area A2, and so on.

[0102] Alternatively, if Figure 6 As shown, the display device further includes a sensing unit 60, which is used to obtain pupil coordinates of the viewer, and the control unit 50 adjusts the first display signal according to the pupil coordinates.

[0103] The sensing unit 60 includes a camera, and the sensing unit 60 may be disposed at a side edge of the display panel 30 .

[0104] like Figure 8 and Fig. 9 As shown, the sensing unit 60 can obtain the pupil coordinates of the viewer and transmit the pupil coordinates to the control unit 50. The control unit 50 arranges the images according to the pupil coordinates and transmits the images corresponding to the first time t1, the second time t2, etc. to the display panel 30 according to the timing information.

[0105] Optionally, the sensing unit 60 acquires pupil coordinates in real time, and when the sensing unit 60 does not detect the pupil coordinates, the control unit 50 adjusts the display signal to the second display signal.

[0106] like Figure 8 As shown, the sensing unit 60 acquires pupil coordinates in real time, which means that the sensing unit 60 does not only acquire pupil coordinates once and then arranges the image according to the pupil coordinates, but detects the pupil coordinates multiple times. When the pupil coordinates change, the sensing unit 60 tracks the pupil coordinates and transmits the changed pupil coordinates to the control unit 50. The control unit 50 arranges the image according to the new pupil coordinates, thereby ensuring the viewing effect of the viewer.

[0107] It should be noted that when there are three viewing zones and the number of viewers is less than 3, for example, when the number of viewers is 1, the sensing unit 60 only obtains the pupil coordinates of one viewer. In the other two viewing zones, the sensing unit 60 can track the number of partitions and transmit the number of partitions to the control unit 50, and the control unit 50 can adjust the display signal of the corresponding viewing zone to a second display signal. The second display signal is a plane display signal, thereby reducing the power consumption of the display device. In other words, the control unit 50 can track the viewing zone situation. When there is no viewer in the viewing zone, the control unit 50 does not arrange the map for the viewing zone, and directly displays it with a plane display signal.

[0108] Optionally, in some embodiments, the sensing unit 60 further includes a tracking correction step to confirm the center point of the visual area.

[0109] Optionally, in some embodiments, the step of the sensing unit 60 acquiring pupil coordinates is taking a picture, processing the picture, acquiring the pupil coordinates of the human eye in the picture, etc.

[0110] In some embodiments, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0111] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0112] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0113] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0114] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display device, characterized in that: include: Backlight module; A light splitting layer, arranged on the light emitting side of the backlight module; A display panel is arranged on a side of the light splitting layer away from the backlight module, and the display panel includes a plurality of sub-pixels; A lens group is arranged on a side of the display panel away from the backlight module, the lens group includes a plurality of lenses, and one lens is arranged corresponding to at least two sub-pixels; The light splitting layer is used to make the light emitted by the backlight module incident on the display panel from a first direction at a first moment and from a second direction at a second moment. The first moment and the second moment alternate, and the first direction and the second direction are different.

2. The display device according to claim 1, characterized in that The backlight module is a collimated light source, and includes a plurality of partitions, which are alternately lit; the light splitting layer includes a plurality of light splitting surfaces facing the backlight module, and one of the partitions corresponds to one of the light splitting surfaces; Among them, at the first moment, the light emitted from one of the partitions is incident on the corresponding splitting surface and is incident on the display panel along the first direction; at the second moment, the light emitted from another of the partitions is incident on the corresponding splitting surface and is incident on the display panel along the second direction.

3. The display device according to claim 2, characterized in that: The light splitting layer includes a plurality of convex parts, and a surface of one side of the convex part close to the backlight module forms at least two light splitting surfaces, and two adjacent light splitting surfaces are arranged at an angle.

4. The display device according to claim 3, characterized in that: The cross-sectional pattern of the convex portion is an axisymmetric figure, and the axis of symmetry of the cross-sectional pattern is perpendicular to the display surface of the display panel.

5. The display device according to claim 4, characterized in that: The light-splitting surface is a plane, one convex portion includes at least three light-splitting surfaces, and the included angles of any two adjacent light-splitting surfaces in one convex portion are the same.

6. The display device according to claim 3, characterized in that: The convex portion extends along the column direction of the display panel, and any two adjacent light splitting surfaces are connected.

7. The display device according to claim 2, characterized in that: The backlight module comprises a stacked surface light source and a light valve layer, wherein the light valve layer is arranged between the surface light source and the light splitting layer; Wherein, at the first moment, the light valve layer is configured to allow light from one of the partitions to pass through and to block light from other partitions; at the second moment, the light valve layer is configured to allow light from another partition to pass through and to block light from other partitions.

8. The display device according to any one of claims 1 to 7, characterized in that: The display device includes a control unit, which obtains timing information of the first moment and the second moment, and controls the display panel to output a first display signal according to the timing information.

9. The display device according to claim 8, characterized in that: The display device further includes a sensing unit, wherein the sensing unit is used to obtain pupil coordinates of a viewer, and the control unit adjusts the first display signal according to the pupil coordinates.

10. The display device according to claim 9, characterized in that: The sensing unit acquires the pupil coordinates in real time, and when the sensing unit does not detect the pupil coordinates, the control unit adjusts the display signal to a second display signal.

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