CN116184700A

CN116184700A - Display module and display device

Info

Publication number: CN116184700A
Application number: CN202211593050.6A
Authority: CN
Inventors: 王明龙; 周文泣; 杨雁; 钟彩娇
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-05-30

Abstract

The utility model provides a display module assembly and display device, the display module assembly includes backlight unit, adjust luminance liquid crystal box and display liquid crystal box, backlight unit is used for sending the light beam, adjust luminance liquid crystal box and display liquid crystal box are located backlight unit one side, adjust luminance liquid crystal box includes along the light modulation micro-structure layer and the peep-proof liquid crystal layer of stacking gradually of the directional light modulation liquid crystal box of follow backlight unit, adjust luminance micro-structure layer includes a plurality of micro-structures of adjusting luminance, one side that backlight unit was kept away from to the micro-structure of adjusting luminance has the target surface, the target surface is curved surface or plane, when the display module assembly is in sharing state, the refracting index of peep-proof liquid crystal layer is first refracting index, the refracting index of adjusting luminance micro-structure is less than first refracting index, the light beam that can diverge to incident into the micro-structure layer of adjusting luminance when the micro-structure of adjusting luminance is got into to the light beam in the effective utilization is in the scope of little visual angle, spread it to bigger visual angle scope, improve visual angle luminance distribution's homogeneity, visual angle luminance when improving sharing state.

Description

Display module and display device

Technical Field

The present disclosure relates to display technologies, and in particular, to a display module and a display device.

Background

Along with the development of liquid crystal display technology, the demand of people for preventing peeping of a display device is more and more obvious, and a peeping prevention film is attached to a display screen, or the peeping can be avoided by using a display device with a collimation backlight and the peeping prevention screen in combination. However, when the peep-proof state meets the requirement, the problem of poor brightness of the shared state visual angle exists, and the use experience of the user is affected.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a display module and a display device, which effectively utilize light within a small viewing angle range to be dispersed into a larger viewing angle range when the display module is in a sharing state, thereby improving uniformity of viewing angle brightness distribution and improving viewing angle brightness in the sharing state. The specific scheme is as follows:

in a first aspect, the present application provides a display module, including:

a backlight module for emitting light beams;

the dimming liquid crystal box and the display liquid crystal box are positioned at one side of the backlight module; the dimming liquid crystal box comprises a dimming microstructure layer and an anti-peeping liquid crystal layer which are sequentially laminated along the stacking direction pointing to the dimming liquid crystal box from the backlight module, the dimming microstructure layer comprises a plurality of dimming microstructures, one side of the dimming microstructures, which is far away from the backlight module, is provided with a target surface, the target surface is a curved surface or a plane, and when the target surface is a plane, an included angle between the plane and the stacking direction pointing to the dimming liquid crystal box from the backlight module is larger than 0 degree and smaller than 90 degrees;

when the display module is in a sharing state, the refractive index of the peep-proof liquid crystal layer is a first refractive index, and the refractive index of the dimming microstructure is smaller than the first refractive index so as to diverge light beams incident to the dimming microstructure layer.

In a second aspect, an embodiment of the present application further provides a display device, including the display module.

The embodiment of the application provides a display module and display device, the display module includes backlight unit, adjust luminance liquid crystal box and display liquid crystal box, backlight unit is used for sending the light beam, adjust luminance liquid crystal box and display liquid crystal box are located backlight unit one side, adjust luminance liquid crystal box includes along adjusting luminance micro-structure layer and peep-proof liquid crystal layer that the stacking direction that adjusts luminance liquid crystal box was directed from backlight unit stacks gradually, adjust luminance micro-structure layer includes a plurality of micro-structure, adjust luminance micro-structure keep away from one side of backlight unit and have the target surface, the target surface is curved surface or plane, when the target surface is the plane, the contained angle between plane and the stacking direction that adjusts luminance liquid crystal box was directed from backlight unit is greater than 0, and be less than 90, when display module is in sharing state, the refracting index of peep-proof liquid crystal layer is less than first refracting index, when the light beam that sends from backlight unit gets into peep-proof liquid crystal layer through adjusting luminance micro-structure like this, according to the refractive index relation of two and the target surface be curved surface or planar micro-structure, can diverge the light beam to adjust luminance micro-structure layer, thereby effectively utilize light in the within a small range, with its wide range, the uniform viewing angle of view is improved, when sharing the luminance is used to the luminance is improved, and the viewing angle is evenly distributed to the shared.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structural diagram of a display module provided in an embodiment of the present application;

FIG. 2 shows a schematic diagram of the deflection of light rays after passing through a plano-convex lens;

fig. 3 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

fig. 5 shows a schematic structural diagram of another display module provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

FIG. 7 shows a schematic diagram of the deflection of light after it has passed through a prism;

FIG. 8 shows a view angle brightness contrast diagram;

fig. 9 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

FIG. 10 shows a schematic diagram of the deflection of light rays after passing through a plano-convex lens;

fig. 11 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

FIG. 12 shows a schematic diagram of the deflection of light after it passes through a prism;

fig. 13 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

fig. 14 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

fig. 16 shows a schematic structural diagram of a display device according to an embodiment of the present application.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.

Next, the present application will be described in detail with reference to the schematic drawings, wherein the cross-sectional views of the device structure are not to scale for the sake of illustration, and the schematic drawings are merely examples, which should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

As described in the background art, while the peep-proof state meets the requirement, there is a problem of poor brightness of the shared viewing angle, where the viewing angle refers to an angle between a line of sight of a user and a direction perpendicular to the display surface when the user views the display screen. The inventor finds that the brightness of the collimation backlight is mainly concentrated in the +/-30-degree viewing angle, and the brightness of the collimation backlight is very low outside the +/-30-degree viewing angle, so that the brightness of the viewing angle is uneven in distribution, the brightness of the viewing angle is poor in a sharing state, and the use experience of a user is affected.

Based on the technical problem, this embodiment of the application provides a display module and display device, the display module includes backlight unit, adjust luminance liquid crystal box and display liquid crystal box, backlight unit is used for sending the light beam, adjust luminance liquid crystal box and display liquid crystal box are located backlight unit one side, adjust luminance liquid crystal box includes along adjusting luminance micro-structure layer and the peep-proof liquid crystal layer that adjusts luminance micro-structure layer that stacks gradually from backlight unit direction of stacking of adjusting luminance liquid crystal box, adjust luminance micro-structure layer includes a plurality of light micro-structure, adjust luminance micro-structure keep away from one side of backlight unit has the target surface, the target surface is curved surface or plane, when the target surface is the plane, the contained angle between plane and the direction of stacking of adjusting luminance liquid crystal box from backlight unit is greater than 0, and be less than 90, when the display module is in the sharing state, the refracting index of peep-proof liquid crystal layer is less than first refracting index, when the light beam that sends from backlight unit gets into peep-proof liquid crystal layer through adjusting luminance micro-structure like this, according to the refractive index relation of two and target surface be curved surface or planar light micro-adjusting micro-structure, can be to the light beam to incident into the micro-structure layer diverges, thereby the light beam that adjusts luminance micro-structure layer, the effective utilization within range is more evenly distributed to the angle of view angle, the user experience is improved to the viewing angle is greatly, and the viewing angle is improved.

In order to facilitate understanding, a display module and a display device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a schematic structure diagram of a display module according to an embodiment of the disclosure is provided, where the display module includes a backlight module 100, a dimming liquid crystal cell 102 and a display liquid crystal cell 104. The backlight module 100 is used for emitting light beams (with arrow lines in fig. 1), the dimming liquid crystal box 102 and the display liquid crystal box 104 are located at one side of the backlight module 100, and normal display of images is achieved by controlling deflection of liquid crystal molecules in the display liquid crystal box 104.

The direction from the backlight module 100 to the dimming liquid crystal box 102 is a stacking direction, the dimming liquid crystal box 102 comprises a dimming microstructure layer and a peep-proof liquid crystal layer 1022 which are sequentially stacked along the stacking direction, the dimming microstructure layer comprises a plurality of dimming microstructures 1021, one side of the dimming microstructures 1021 away from the backlight module 100 is provided with a target surface, and the target surface can be a curved surface or a plane.

In this embodiment of the present application, the state of the display module may be switched between the sharing state and the peep-proof state, when the display module is in the sharing state, the liquid crystal molecules in the peep-proof liquid crystal layer 1022 may be, for example, positive liquid crystal, the liquid crystal molecules are in a lying state, that is, the included angle between the long axis of the liquid crystal molecules and the stacking direction is close to 90 °, the light emitted by the backlight module 100 enters the human eye through the dimming liquid crystal box 102 and the display liquid crystal box 104, when the human eye views the front surface of the display panel, the light is refracted out through the long axis of the liquid crystal molecules, and when the side surface of the display panel views the side surface, the light is refracted out through the long axis of the liquid crystal molecules, and the user can normally view the display screen on the front surface and the side surface of the display panel.

The liquid crystal molecules have a double refractive index characteristic, and when the display module is in a sharing state, the refractive index of the peep-proof liquid crystal layer 1022 is the long axis refractive index of the liquid crystal molecules, namely the e light refractive index (n _e ) The refractive index of the dimming microstructure 1021 is less than the first refractive index, denoted as the first refractive index. Specifically, when the light has a refractive index of n ₁ Is incident into a medium with refractive index n ₂ When in medium of (2), the refractive index formula is n ₁ sinθ ₁ ＝n ₂ sinθ ₂ Wherein θ ₁ For incident angle, theta ₂ Is the angle of refraction. In the sharing state, n ₁ Is the refractive index of the micro-lens structure, n2 is the first refractive index n _e ，n _e Greater than n ₁ Theta is then ₂ Less than theta ₁ . Referring to FIG. 2, a schematic diagram of deflection of light after passing through a plano-convex lens is shown, wherein a dotted line represents a normal line, and an angle between an incident light and the normal line is an incident angle θ ₁ The included angle between the refracted ray and the normal is the refraction angle theta ₂ The collimated backlight beam incident on the micro-lens structure is deflected towards two sides after being refracted by the micro-lens structure, so that the viewing angle in the sharing state is widened.

When the light beam emitted from the backlight module 100 enters the peep-proof liquid crystal layer 1022 through the dimming microstructure 1021, the light beam entering the dimming microstructure layer can be diffused according to the refractive index relation of the light beam and the dimming microstructure 1021 of which the target surface is a curved surface or a plane, so that the light with the viewing angle within +/-30 degrees is effectively utilized, the light with the viewing angle within +/-30 degrees is diffused to an area outside +/-30 degrees, the uniformity of the brightness distribution of the viewing angle is improved, the brightness of the viewing angle in a sharing state is improved, and the use experience of a user is improved.

In one possible implementation, when the target surface of the dimming microstructure 1021 is a curved surface, the dimming microstructure 1021 may be a plano-convex lens, and a plane in the plano-convex lens mirror is close to the backlight module 100, as shown in fig. 1. If the length of the plano-convex lens is less than 8 microns, the number of plano-convex lenses can be increased, the process cost is increased to cause waste, if the length of the plano-convex lens is greater than 15 microns, the curved surface of the plano-convex lens can be more gentle, and the divergence effect on the light beam entering the plano-convex lens is poor, so that the length of the plano-convex lens can be greater than or equal to 8 microns and less than or equal to 15 microns, and therefore, the light beam entering the dimming microstructure layer can be diverged, the cost can be reduced, and the process waste can be avoided.

In another possible implementation manner, when the target surface of the dimming microstructure 1021 is a curved surface, the dimming microstructure 1021 may also be a fresnel lens, where the fresnel lens is lighter in weight and thinner in thickness, and the quality and thickness of the display module can be reduced, and the fresnel lens has many inclined surfaces with larger inclination, and the diverging effect of the fresnel lens on the incident beam is better than that of the plano-convex lens. The plane in the fresnel lens is close to the backlight module 100, and referring to fig. 3, a schematic structural diagram of another display module provided in an embodiment of the present application is shown, and the dimming microstructure is the fresnel lens. Of course, the dimming microstructure 1021 may be other structures, as long as the light beam incident on the dimming microstructure layer can be diverged.

In this embodiment of the present application, the interval between two adjacent light modulation microstructures 1021 in the plurality of light modulation microstructures 1021 may be smaller than or equal to 2 micrometers, and may be reduced as much as possible to improve the divergence effect of the micro lens structure on the light beam, for example, the plurality of light modulation microstructures 1021 are arranged next to each other, and referring to fig. 4, a schematic structural diagram of another display module provided in this embodiment of the present application is shown, and a plurality of plano-convex lenses are arranged next to each other.

In this embodiment of the present application, the target surface of the dimming microstructure 1021 may be not only a curved surface, but also a plane, and when the target surface is a plane, the included angle between the plane and the stacking direction may be greater than 0 ° and less than 90 °, that is, the target surface is an inclined plane, so that the manufacturing of the dimming microstructure 1021 may be simplified, and the cost is reduced.

In one possible implementation manner, when the target surface of the dimming microstructure 1021 is a plane, the dimming microstructure 1021 may be a prism, such as a triple prism, a tetra prism, etc., and the prism is manufactured in a simpler manner, so that the cost is low, and the manufacturing cost of the display module can be reduced. Referring to fig. 5, a schematic structural diagram of another display module provided in an embodiment of the present application is shown, where a plane of the prism, which is close to the backlight module 100, is perpendicular to a stacking direction of the dimming liquid crystal cell 102 from the backlight module 100. Referring to fig. 6, a schematic structural diagram of another display module provided in an embodiment of the present application, a plurality of prisms may be arranged next to each other. Referring to fig. 7, a schematic diagram of deflection of light after passing through a prism is shown, and a collimated backlight beam incident to the prism is deflected to two sides after being refracted by the prism, so that the viewing angle in a sharing state is widened.

In this embodiment of the present application, the thickness of the dimming liquid crystal box 102 may be specifically set to be 4 μm, the dimming microstructure 1021 is a plano-convex lens, the refractive index of the plano-convex lens is 1.55, the length of the plano-convex lens is 8 μm, the height of the plano-convex lens is 3.5 μm, and the distance between two adjacent plano-convex lenses is 2 μm, so that a proper distance is provided between the adjacent plano-convex lenses, which not only can have a better divergence effect on the aligned backlight beam, but also can save the cost. Referring to fig. 8, a contrast diagram of view brightness is shown, curve 1 is the view brightness variation in the sharing state in the prior art, curve 2 is the view brightness variation after the dimming liquid crystal cell provided in the embodiment of the present application is adopted, the abscissa represents the angle (in °), and the ordinate represents the brightness (in nit).

When the angle is 45 degrees, the brightness corresponding to the curve 1 is 200nit, the brightness corresponding to the curve 2 is 1080nit, the brightness is improved by 440% when the angle is 45 degrees in the sharing state, the brightness corresponding to the curve 1 is 80nit, the brightness is 650nit when the angle is 50 degrees, the brightness is improved by 712% when the angle is 50 degrees in the sharing state, and the view angle brightness is obviously improved in the large view angle. When the angle is 4 degrees, the brightness corresponding to the curve 1 is 12200nit, the brightness corresponding to the curve 2 is 9200nit, and the brightness is reduced by 25% when the angle is 4 degrees in the sharing state, so that the light is deflected to two sides through the micro lens structure, the brightness in a small view angle is weakened, the brightness in a large view angle is improved, the brightness uniformity is improved, and the display effect in the sharing state is improved.

In addition, the inventor finds that when the display module is in the peep-proof state, the double-screen black peep-proof has the problem that the brightness of the visual angle is raised, the light with the visual angle larger than 30 degrees can be absorbed by the polaroid by utilizing the polarization of the light, but along with the change of the visual angle, the polarization state of the emergent light just reaches the complete orthogonality with the polaroid at a certain angle, the angle between the polarization state of the emergent light and the polaroid is increased to be smaller than 90 degrees, the display module has the problem of light leakage, and along with the larger angle, the light leakage is increased, namely the brightness of the display module is raised in the peep-proof state, and the peep-proof effect is not ideal.

In this embodiment of the present application, when the display module is in the peep-proof state, the liquid crystal molecules in the peep-proof liquid crystal layer 1022 are in a standing state under the action of the electric field, that is, the included angle between the long axis of the liquid crystal molecules and the stacking direction is smaller, as shown in fig. 9, which is a schematic structural diagram of another display module provided in this embodiment of the present application, the liquid crystal molecules in the peep-proof liquid crystal layer 1022 are warped.

Specifically, when the user views the front of the display panel, light is refracted out through the long axis of the liquid crystal molecules, and when the user views the side of the display panel, light is refracted out through the short axis of the liquid crystal molecules, and the brightness is lower, so that the peep-proof function is realized. The refractive index of the peep-proof liquid crystal layer 1022 is the minor axis refractive index of the liquid crystal molecule, i.e. o-ray refractive index (n _o ) Denoted as the second refractive index, the refractive index of the dimming microstructure 1021 is greater than the second refractive index.

Specifically, a collimated backlight beam incident on a microlens structure, n _o Less than n ₁ After being refracted by the micro lens structure, the light beams in the peep-proof liquid crystal layer are converged, and the emergent light beams are deflected towards the middle, so that the emergent light with a large visual angle is converged within a range of-30 degrees to 30 degrees, and the peep-proof effect is improved. Fig. 10 is a schematic diagram showing deflection of light after passing through a plano-convex lens, wherein the dimming microstructure is a plano-convex lens, and light passing through the plano-convex lens converges. Referring to fig. 11, a schematic structural diagram of another display module provided in an embodiment of the present application is shown, and the dimming microstructure is a prism. Referring to fig. 12, a schematic diagram of the deflection of light passing through a prism is shown, and the light is converged after passing through the prism.

Thus, when the liquid crystal is warped in the peep-proof state, the light beam emitted from the backlight module 100 enters the peep-proof liquid crystal layer 1022 through the dimming microstructure 1021, the light beam entering the dimming microstructure layer 1021 can be converged according to the refractive index relation of the light beam and the dimming microstructure 1021 with the curved surface or the plane target surface, so that the visual view angle of a user is reduced, peeping is prevented in a larger angle range, the brightness return of the light beam in a large view angle is obviously weakened, and the peep-proof effect of the peep-proof state is improved.

In this embodiment of the present application, the dimming liquid crystal cell 102 may be a vertical alignment (Vertical Alignment, VA) type liquid crystal cell or an electrically controlled birefringence (electrically controlled birefringence, ECB) type liquid crystal cell, etc., which is not limited herein, and optionally, the dimming liquid crystal cell 102 may be an electrically controlled birefringence type liquid crystal cell, so that the viewing angle brightness in the sharing state and the peeping preventing effect in the peeping preventing state can be better improved.

In the embodiment of the present application, the relative positions of the dimming liquid crystal cell 102 and the display liquid crystal cell 104 are not limited herein, and the dimming liquid crystal cell 102 may be located between the backlight module 100 and the display liquid crystal cell 104, or may be located on a side of the display liquid crystal cell 104 facing away from the backlight module 100. When the dimming cell 102 is located between the display cell 104 and the backlight module 100, the light beam emitted by the dimming cell 102 is used as the incident light of the display cell 104, as shown in fig. 1.

When the display liquid crystal box 104 is located between the dimming liquid crystal box 102 and the backlight module 100, the light beam incident to the dimming liquid crystal box 102 is the light emitted by the backlight module 100 after passing through the display liquid crystal box 104, and referring to fig. 13, a schematic structural diagram of another display module provided in this embodiment of the present application is shown, where the display module includes the backlight module 100, the display liquid crystal box 104 and the dimming liquid crystal box 102 sequentially stacked along the stacking direction, and the light beam emitted by the backlight module 100 is incident into the dimming microstructure 1021 of the dimming liquid crystal box 102 through the display liquid crystal box 104.

In this embodiment of the present application, the display module may further include a first polarizer 106, a second polarizer 107, and a third polarizer 108, as shown in fig. 14, which is a schematic structural diagram of another display module provided in this embodiment of the present application, where the first polarizer 106 is located on a side of the backlight module 100 near the dimming liquid crystal box 102, the second polarizer 107 is located on a side of the dimming liquid crystal box 102 far from the backlight module 100, and is located on a side of the display liquid crystal box 104 far from the backlight module 100, the first polarizer is used to change the collimated backlight beam into polarized light, the vibration direction of the polarized light is parallel to the polarization axis of the first polarizer, the polarization axis of the second polarizer 107 intersects with the polarization axis of the first polarizer 106, under the effect of liquid crystal molecules in the display liquid crystal box, the polarization direction of the polarized light changes after passing through the display liquid crystal box, and when the polarization direction is parallel to the polarization axis of the second polarizer, the picture can be displayed normally.

The third polarizer 108 is located between the dimming cell 102 and the display cell 104, and when the dimming cell 102 is located between the display cell 104 and the backlight module 100, as shown in fig. 14, the polarizing axis of the third polarizer 108 is parallel to the polarizing axis of the first polarizer, so that polarized light of the first polarizer is incident on the display cell through the third polarizer. When the display cell 104 is located between the dimming cell 102 and the backlight module 100, the polarizing axis of the third polarizer 108 intersects with the polarizing axis of the first polarizer 106, and polarized light emitted from the first polarizer 106 is optically rotated by liquid crystal molecules in the display cell and emitted from the third polarizer. That is, the polarization axes of the two polarizers located at both sides of the dimming cell are parallel because the optical rotation of the liquid crystal molecules in the dimming cell is small and negligible.

In this embodiment of the present application, the peep-proof liquid crystal box may further include a first electrode 116 and a second electrode 118, which are used for driving the liquid crystal in the peep-proof liquid crystal box to rotate, so as to realize the conversion of the display module in the peep-proof state and the sharing state. Referring to fig. 15, a schematic structural diagram of another display module provided in this embodiment of the present application is shown, where a first electrode 116 is located between a first polarizer 106 and a dimming microstructure 1021, a second electrode 118 is located between a peep-proof liquid crystal layer 1022 and a third polarizer 108, one of the first electrode 116 and the second electrode 118 may be connected to a voltage of 0V, and the other may be connected to an alternating current square wave.

The first electrode 116 and the second electrode 118 are used for driving the liquid crystal molecules in the peep-proof liquid crystal layer 1022 to deflect so as to enable the liquid crystal molecules to be in a lying state or a warping state, and therefore the display module is controlled to be in a sharing state or a peep-proof state. The first electrode 116 and the second electrode 118 may also be located on the same side, for example, between the first polarizer 106 and the dimming microstructure 1021, which is not particularly limited herein.

In the embodiment of the present application, the display liquid crystal cell 104 may further include a pixel driving circuit layer 110, a display liquid crystal layer 112, and a color film substrate 114 sequentially stacked from the backlight module toward the stacking direction of the dimming liquid crystal cell.

Specifically, the color film substrate 114 is provided with a color resist layer and a black matrix 1142 for separating the color resist layer from each other on a side facing the display liquid crystal layer 112. The color block 1141 filters out light having a color different from that of the color block in white light, so as to achieve the effect of emitting light of one color, for example, the Red color block may allow Red light component in white light to pass therethrough, light of other color components (such as Green light and Blue light) to be absorbed, and the color block layer includes, for example, red (Red, R), green (Green, G), blue (Blue, B) color block materials. The black matrix 1142 is located between adjacent color blocks 1141, such that adjacent color blocks 1141 are spaced apart from each other by the black matrix 1142, each color block corresponding to one subpixel.

The pixel driving circuit layer 110 may include a thin film transistor and a pixel electrode electrically connected to a data line adjacent to the thin film transistor through the thin film transistor. The thin film transistor comprises a grid electrode, an active layer, a drain electrode and a source electrode, wherein the grid electrode is positioned on the same layer with the scanning line and is electrically connected with the scanning line, the grid electrode is isolated from the active layer through an insulating layer, the source electrode is electrically connected with the data line, and the drain electrode is electrically connected with the pixel electrode through a contact hole.

The pixel driving circuit layer 110 may include a common electrode, where the common electrode and the pixel electrode are used to drive the liquid crystal molecules in the display liquid crystal layer to deflect so as to control the intensity of light emitted from each pixel region, and the common electrode and the pixel electrode are located in different layers and insulated from each other by an insulating layer. The common electrode may be located above or below the pixel electrode. Alternatively, the common electrode is a planar electrode disposed entirely, and the pixel electrode is a block electrode disposed entirely within each pixel cell or a slit electrode having a plurality of electrode bars to form a fringe field switching pattern (Fringe Field Switching, FFS). Of course, the pixel electrode and the common electrode may be located at the same layer, but they are insulated from each other, and each of the pixel electrode and the common electrode may include a plurality of electrode bars, and the electrode bars of the pixel electrode and the electrode bars of the common electrode are alternately arranged with each other to form an In-Plane Switching (IPS); alternatively, the pixel electrode and the common electrode may also be located at both sides of the display liquid crystal layer to form a PET display architecture, a Twisted Nematic (TN) display architecture, or a vertically aligned (Vertical Alignment, VA) display architecture.

The embodiment of the application provides a display module, the display module includes backlight unit, adjust luminance liquid crystal box and display liquid crystal box, backlight unit is used for sending the light beam, adjust luminance liquid crystal box and display liquid crystal box are located backlight unit one side, adjust luminance liquid crystal box includes along adjusting luminance micro-structure layer and peep-proof liquid crystal layer that adjusts luminance micro-structure layer that follows the stacking direction of the directional adjust luminance liquid crystal box of backlight unit in proper order, adjust luminance micro-structure layer includes a plurality of micro-structure, adjust luminance micro-structure keep away from one side of backlight unit and have the target surface, the target surface is curved surface or plane, when the target surface is the plane, the contained angle between plane and the stacking direction of the directional adjust luminance liquid crystal box of follow backlight unit is greater than 0, and be less than 90, when display module is in sharing state, the refractive index of adjusting luminance micro-structure is less than first refractive index, when the light beam that sends from backlight unit gets into the anti-peep liquid crystal layer through adjusting luminance micro-structure like this, according to the refractive index relation of two and target surface be curved surface or planar adjust luminance micro-structure, can diverge the light beam to the incidence micro-structure layer, thereby effectively utilize light in the within a small range, when being more divergent angle scope, the uniform viewing angle is used for improving the luminance and the user experience, the viewing angle is improved.

Based on the display panel provided in the above embodiment, as shown in fig. 16, the embodiment of the present application further provides a display device, which includes the display module 10, and the display device may be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, or a television. The display device adopts the display module, so that the visual angle brightness in a sharing state can be improved, and the use experience of a user is improved.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely a preferred embodiment of the present application, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art may make many possible variations and modifications to the technical solution of the present application, or modify equivalent embodiments, using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present application, which do not depart from the content of the technical solution of the present application, still fall within the scope of the technical solution of the present application.

Claims

1. A display module, comprising:

a backlight module for emitting light beams;

2. The display module of claim 1, wherein the dimming microstructure is a plano-convex lens or a fresnel lens, and a plane in the plano-convex lens or the fresnel lens is adjacent to the backlight module.

3. The display module of claim 2, wherein the plano-convex lens has a length greater than or equal to 8 microns and less than or equal to 15 microns.

4. The display module of claim 1, wherein the dimming microstructure is a prism, and a plane of the prism adjacent to the backlight module is perpendicular to a stacking direction of the dimming liquid crystal cell from the backlight module.

5. The display module of claim 1, wherein a spacing between two adjacent dimming microstructures in the plurality of dimming microstructures is less than or equal to 2 microns.

6. The display module of any one of claims 1-5, wherein when the display module is in a peep-proof state, the refractive index of the peep-proof liquid crystal layer is a second refractive index, and the refractive index of the dimming microstructure is greater than the second refractive index, so as to converge a light beam incident on the dimming microstructure layer.

7. A display module according to any one of claims 1-5, wherein the dimming liquid crystal cell is an electrically controlled birefringent liquid crystal cell.

8. The display module of any one of claims 1-5, wherein the display module further comprises:

the first polaroid is positioned at one side of the backlight module, which is close to the dimming liquid crystal box;

the second polaroid is positioned at one side of the dimming liquid crystal box away from the backlight module and at one side of the display liquid crystal box away from the backlight module; the polarizing axis of the second polarizer intersects the polarizing axis of the first polarizer;

a third polarizer located between the dimming liquid crystal cell and the display liquid crystal cell; when the dimming liquid crystal box is positioned between the display liquid crystal box and the backlight module, the polarizing axis of the third polaroid is parallel to the polarizing axis of the first polaroid, and when the display liquid crystal box is positioned between the dimming liquid crystal box and the backlight module, the polarizing axis of the third polaroid is intersected with the polarizing axis of the first polaroid.

9. The display module according to any one of claims 1 to 5, wherein the display liquid crystal cell includes a pixel driving circuit layer, a display liquid crystal layer, and a color film substrate sequentially stacked from the backlight module toward a stacking direction of the dimming liquid crystal cell;

the peep-proof liquid crystal box further comprises a first electrode and a second electrode, wherein the first electrode and the second electrode are used for controlling the display module to be in a sharing state or a peep-proof state.

10. The display module of any one of claims 1-5, wherein a light beam that diverges through the dimming liquid crystal cell is used as incident light to the display liquid crystal cell when the dimming liquid crystal cell is located between the display liquid crystal cell and the backlight module; when the display liquid crystal box is positioned between the dimming liquid crystal box and the backlight module, the light beam entering the dimming liquid crystal box is light emitted by the backlight module after passing through the display liquid crystal box.

11. A display device comprising a display module according to any one of claims 1-10.