CN113126351A

CN113126351A - Display module, driving method thereof and display device

Info

Publication number: CN113126351A
Application number: CN202110411698.6A
Authority: CN
Inventors: 石常洪; 王进; 钟娴
Original assignee: BOE Technology Group Co Ltd; Fuzhou BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Fuzhou BOE Optoelectronics Technology Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-07-16
Anticipated expiration: 2041-04-16
Also published as: CN113126351B

Abstract

The application discloses display module assembly and driving method, display device thereof, one of them display module assembly, including first display panel and the second display panel of range upon range of setting from top to bottom, still include first polarisation layer and second polarisation layer, first display panel is including the first glass substrate, the first glass substrate that goes up that is located two upper and lower surfaces, second display panel is including the second glass substrate, the second glass substrate under the second that is located two upper and lower surfaces, first polarisation layer sets up first glass substrate upper surface, the second polarisation layer sets up the lower surface of glass substrate or setting are in under the second glass substrate first glass substrate with between the second glass substrate. The display module that this application embodiment provided is double-deck display panel to adopt two polaroids to realize showing the function, the display panel on upper strata is liquid crystal display panel as main display panel, and the display panel of lower floor uses for controlling light, can effectively improve the contrast of product.

Description

Display module, driving method thereof and display device

Technical Field

The application generally relates to the technical field of display, in particular to a display module, a driving method thereof and a display device.

Background

With the gradual popularization of Liquid Crystal Displays (LCDs), Display technologies adapted to LCDs are also under constant development.

In order to pursue high contrast of a display screen, a double-layer LCD display screen is provided for an LCD product, and due to the overlapping design of the double-layer Cell, a dark part of a picture is darker, so that the contrast of the picture is improved, the image display is clearer, and more details are provided.

However, the existing double-layer LCD products usually require at least 3 polarizing layers, resulting in lower transmittance of the display plane, and meanwhile, the double-layer LCD generally has higher backlight brightness and large power consumption; in addition, the temperature is high during operation, which greatly affects the characteristics of the TFT and is prone to cause undesirable phenomena such as crosstalk and image sticking.

Disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a display module, a driving method thereof, and a display device, which can modulate reflected light, reduce the total thickness of a panel, and simplify the process flow.

In a first aspect, the application provides a display module assembly, including first display panel and the second display panel of range upon range of setting from top to bottom, still include first polarisation layer and second polarisation layer, first display panel is including the first glass substrate, the first glass substrate of going up that is located two upper and lower surfaces, second display panel is including the second glass substrate, the second glass substrate of going up that is located two upper and lower surfaces, first polarisation layer sets up first glass substrate upper surface of going up, the setting of second polarisation layer is in the lower surface of glass substrate or setting are in under the second first glass substrate with between the second glass substrate.

Further, the first display panel is a liquid crystal display panel, the first upper glass substrate is a colored glass substrate, the first display panel comprises a liquid crystal box, and a first upper electrode and a first lower electrode which are positioned on the upper surface and the lower surface of the liquid crystal box, a first array substrate is further arranged on the lower layer of the first lower electrode, and the first lower glass substrate is arranged on the lower surface of the first array substrate.

Further, the second display panel comprises a light ray control layer, a second upper electrode and a second lower electrode, wherein the second upper electrode and the second lower electrode are located on the two downward surfaces of the light ray control layer, the upper surface of the second upper electrode is provided with the second upper glass substrate, the lower layer of the first lower electrode is further provided with a second array substrate, and the lower surface of the second array substrate is provided with the second lower glass substrate.

In some embodiments, the second polarizing layer is disposed on a lower surface of the second lower glass substrate, and the first lower glass substrate and the second upper glass substrate share the same glass substrate.

In some embodiments, the second polarizing layer is disposed between the first lower glass substrate and the second upper glass substrate, the second polarizing layer is a wire grid polarizer including a base substrate and a wire grid disposed on the base substrate.

Further, the substrate is reused with the first lower glass substrate or the second upper glass substrate, and the metal wire grid is arranged between the first lower glass substrate and the second upper glass substrate.

Further, the substrate, the first lower glass substrate and the second upper glass substrate multiplex the same glass substrate, and the metal wire grid is disposed on the upper surface or the lower surface of the multiplexed glass substrate.

Further, the light control layer includes a plurality of archs and cladding at the electric light crystal on protruding surface, bellied income plain noodles is the plane, the arch with the electric light crystal interface is the curved surface, go into the plain noodles and be close to second array substrate, bellied orientation deviates from go into the plain noodles.

In a second aspect, the present application provides a driving method for a display module, which is applied to the display module described in any one of the above embodiments, the method includes:

judging the display gray scale of the first display panel;

adjusting the working voltage of the second display panel according to the display gray scale of the first display panel;

and driving the second display panel with different working voltages, and adjusting the refractive index of the electro-optic crystal to control the intensity of the reflected light of the second display panel entering the first display panel.

In a third aspect, the present application provides a display device, including the display module as described in any of the above.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

the display module provided by the embodiment of the application is a double-layer display panel, the display function is realized by adopting two polaroids, the upper display panel is used as a main display panel and is a liquid crystal display panel, and the lower display panel is used for controlling light, so that the contrast of a product can be effectively improved; the double-layer polaroid is adopted, so that the product transmittance is high, the total thickness of the display module is reduced, and meanwhile, the process flow can be simplified; the backlight is not required to be highlighted, the power consumption is reduced, and the adverse phenomena of crosstalk, residual image and the like are avoided.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another display module according to an embodiment of the present disclosure;

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 a second display panel according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating a driving method of a display module according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of light propagation at a protrusion provided by embodiments of the present application;

FIG. 7 is a schematic view of another light propagation at a protrusion provided by an embodiment of the present application;

fig. 8 is a schematic view illustrating a display mode of a display module according to an embodiment of the present disclosure;

fig. 9 is a schematic view illustrating another display mode of a display module according to an embodiment of the present disclosure;

fig. 10 is a schematic view of another display mode of a display module according to an embodiment of the present disclosure.

100. A first display panel; 200. a second display panel; 1. a first polarizing layer; 2. a first upper glass substrate; 3. a first upper electrode; 4. a liquid crystal cell; 5. a first lower electrode; 6. a first array substrate; 7. a first lower glass substrate; 8. a second polarizing layer; 9. a second upper glass substrate; 10. a second upper electrode; 11. a light ray control layer; 12. a second lower electrode; 13. a second array substrate; 14. a second lower glass substrate; 15. a protrusion; 16. an electro-optic crystal.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

A Polarizer (Polarizer, POL) is a so-called Polarizer, which is an optical film material for converting natural light into polarized light, and the imaging of the liquid crystal display must depend on the polarized light. Because the liquid crystal has an optical rotation effect, the optical rotation effect of the liquid crystal can be changed under the action of an electric field, and the on-off control of light can be realized only when linearly polarized light passes through the liquid crystal, namely whether the light passes through or not, and the passing amount of the light is controlled, so that the display is performed.

The liquid crystal display has two front and back polarizing plates tightly attached to the liquid crystal glass, the current Dual Cell display screen is formed by attaching two liquid crystal display screens together, at least 3 layers of POL are needed, and the transmittance of the product is low.

Please refer to fig. 1-3 in detail, the present application provides a display module, which includes a first display panel 100 and a second display panel 200 stacked up and down, and further includes a first polarizing layer 1 and a second polarizing layer 8, wherein the first display panel 100 includes a first upper glass substrate 2 and a first lower glass substrate 7 on upper and lower surfaces, the second display panel 200 includes a second upper glass substrate 9 and a second lower glass substrate 14 on upper and lower surfaces, the first polarizing layer 1 is disposed on the upper surface of the first upper glass substrate 2, and the second polarizing layer 8 is disposed on the lower surface of the second lower glass substrate 14 or between the first lower glass substrate 7 and the second upper glass substrate 9.

The first display panel on upper strata is liquid crystal display panel in this application embodiment, and the display panel of lower floor is non-liquid crystal display panel, through setting up two-layer polarisation layer for display module assembly's whole luminousness is high, but the gross thickness of attenuate display panel, simplifies process flow, and solves the double-deck display screen laminating degree of difficulty, avoids mole line scheduling problem.

The first display panel 100 is a liquid crystal display panel, the first upper glass substrate 2 is a color glass substrate, the first display panel 100 includes a liquid crystal box 4, and a first upper electrode 3 and a first lower electrode 5 which are located on the upper and lower surfaces of the liquid crystal box 4, a first array substrate 6 is further disposed on the lower layer of the first lower electrode 5, and a first lower glass substrate 7 is disposed on the lower surface of the first array substrate 6.

It should be noted that the first upper electrode 3 may be a pixel electrode, and the first lower electrode 5 may be a common electrode. The material of the first upper electrode 3 and the first lower electrode 5 may be a transparent conductive material. For example, Indium Tin Oxide (ITO) and Indium Zinc Oxide (IZO). In some embodiments, the first upper electrode 3 may be a common electrode, and the first lower electrode 5 may be a pixel electrode, which is not particularly limited in the present application.

The second display panel 200 includes a light ray control layer 11, and a second upper electrode 10 and a second lower electrode 12 which are located on two downward surfaces of the light ray control layer 11, the upper surface of the second upper electrode 10 is provided with a second upper glass substrate 9, the lower layer of the first lower electrode 5 is further provided with a second array substrate 13, and the lower surface of the second array substrate 13 is provided with a second lower glass substrate 14.

It should be noted that the second upper electrode 10 may be a pixel electrode, and the second lower electrode 12 may be a common electrode. The material of the second upper electrode 10 and the second lower electrode 12 may be a transparent conductive material. For example, Indium Tin Oxide (ITO) and Indium Zinc Oxide (IZO). In some embodiments, the second upper electrode 10 may be a common electrode, and the second lower electrode 12 may be a pixel electrode, which is not particularly limited in the present application.

In the embodiment of the present application, the first display panel 100 on the upper layer is a color screen for display, and the second display panel 200 is a black and white screen for light control, so as to improve the contrast of the product. In the embodiment of the present application, the second display panel 200 utilizes the TFT circuit to adjust the light transmittance in the light control layer 11 for precise light shielding, and the light control precision reaches the sub-pixel level.

In some embodiments, the second polarizing layer 8 is disposed on the lower surface of the second lower glass substrate 14.

In some embodiments, the second polarizing layer 8 is disposed between the first lower glass substrate 7 and the second upper glass substrate 9.

In some embodiments, the first lower glass substrate 7 and the second upper glass substrate 9 multiplex the same glass substrate.

In some embodiments, the second polarizing layer 8 is a metal wire grid polarizer.

In some embodiments, the wire grid polarizer is multiplexed with the same glass substrate as the first lower glass substrate 7.

In some embodiments, the wire grid polarizer is multiplexed with the same glass substrate as the second upper glass substrate 9.

In some embodiments, the wire grid polarizer and the second lower glass substrate 14 share the same glass substrate.

In some embodiments, the second polarizing layer 8, the first lower glass substrate 7, and the second upper glass substrate 9 are multiplexed on the same glass substrate.

In the embodiment of the application, the first display panel 100 layer adopts the liquid crystal display panel, and the second layer adopts the display panel controlled by the light ray to replace the traditional liquid crystal screen, so that the local backlight modulation of the first display panel 100 layer (namely, the color liquid crystal screen) is realized, and the contrast is improved.

When specifically setting up, as shown in fig. 4, light control layer 11 includes a plurality of archs 15 and cladding and is in the electro-optic crystal 16 on protruding 15 surface, the income plain noodles of arch 15 is the plane, arch 15 with the 16 interfaces of electro-optic crystal are the curved surface, it is close to go into the plain noodles second array substrate 13, protruding 15 orientation deviates from go into the plain noodles.

Example one

Referring to fig. 1, the present application provides a display module, which includes a first display panel 100 and a second display panel 200 stacked up and down, and further includes a first polarizing layer 1 and a second polarizing layer 8, where the first display panel 100 includes a first upper glass substrate 2 and a first lower glass substrate 7 on upper and lower surfaces, the second display panel 200 includes a second upper glass substrate 9 and a second lower glass substrate 14 on upper and lower surfaces, the first polarizing layer 1 is disposed on the upper surface of the first upper glass substrate 2, and the second polarizing layer 8 is disposed between the first lower glass substrate 7 and the second upper glass substrate 9.

The first display panel 100 and the second display panel 200 each include a TFT (Thin Film Transistor) switch, and in the embodiment of the present application, the TFT of the first display panel 100 is disposed on the first lower glass substrate 7 of the first array substrate 6, and the TFT of the second display panel 200 is disposed on the second lower glass substrate 14 of the second array substrate 13. The specific setting method can adopt conventional setting, and the detailed description is omitted here.

Specifically, when the lamination is performed, the second polarizing layer 8 is laminated on the lower surface of the first lower glass substrate 7 of the first display panel 100, or the second polarizing layer 8 is laminated on the upper surface of the second upper glass substrate 9 of the second display panel 200.

In this application, the lower surface of the first display panel 100 is close to the direction of the second display panel 200, and the upper surface of the first display panel 100 is away from the direction of the second display panel 200. The lower surface of the second display panel 200 is away from the first display panel 100, and the lower surface of the second display panel 200 is close to the first display panel 100.

After the first display panel 100 and the second display panel 200 are prepared, the first display panel 100 and the second display panel 200 are attached to each other. Through the mode, the laminating process is simple, the process flow can be simplified, the laminating difficulty of the double-layer display screen is reduced, and the problems of moire lines and the like are avoided.

In operation, the display module provides a backlight source through a backlight module (not shown in the figure), the intensity of the transmitted light is controlled through the second display panel 200, and the first liquid crystal panel displays images under the influence of the intensity of the transmitted light.

It is understood that, in the embodiment of the present application, the second display panel 200 only serves to adjust the transmission amount or the reflection amount of the light of the backlight, and the first display panel 100 serves as a screen display. In the embodiment of the present application, the first display panel 100 may adopt a conventional LCD display panel, a Color Filter (Color Filter) is disposed on the first display panel 100, but the second display panel 200 does not serve for displaying a picture, and does not display the Color of the corresponding picture.

In the embodiment of the present application, the first polarizing layer 1 used in the present application is an existing upper polarizer, and the second polarizing layer 8 used in the present application is an existing lower polarizer, which will not be described in detail herein.

Example two

Referring to fig. 2, the present application provides a display module, which includes a first display panel 100 and a second display panel 200 stacked up and down, and further includes a first polarizing layer 1 and a second polarizing layer 8, where the first display panel 100 includes a first upper glass substrate 2 and a first lower glass substrate 7 on upper and lower surfaces, the second display panel 200 includes a second upper glass substrate 9 and a second lower glass substrate 14 on upper and lower surfaces, the first polarizing layer 1 is disposed on an upper surface of the first upper glass substrate 2, and the second polarizing layer 8 is disposed on a lower surface of the second lower glass substrate 14.

Wherein the first lower glass substrate 7 of the first display panel 100 and the second upper glass substrate 9 of the second display panel 200 share the same glass substrate, i.e. the TFTs of the first array substrate 6 are fabricated on the second upper glass substrate 9 of the second display panel 200.

In the specific manufacturing, the second display panel 200 is manufactured, and after the second display panel 200 is manufactured, the TFTs of the first display panel 100 are manufactured on the second upper glass substrate 9 of the second display panel 200.

The second polarizing layer 8 is attached to the upper surface of the second upper glass substrate 9 of the second display panel 200. The attaching timing of the second polarizing layer 8 is not particularly limited, and may be before the preparation of the second display panel 200 is completed, or may be after the preparation of the second display panel 200 is completed; the preparation of the first display panel 100 may be completed before the preparation of the first display panel 100 is completed, and may be completed after the preparation of the first display panel 100 is completed.

Through this mode, reduced display module's panel gross thickness, avoided laminating after the preparation bilayer, can simplify process flow, avoided double-deck laminating technology laminating precision not high, easily produce mole line scheduling problem.

EXAMPLE III

Referring to fig. 3, the present application provides a display module, which includes a first display panel 100 and a second display panel 200 stacked up and down, and further includes a first polarizing layer 1 and a second polarizing layer 8, where the first display panel 100 includes a first upper glass substrate 2 and a first lower glass substrate 7 on upper and lower surfaces, the second display panel 200 includes a second upper glass substrate 9 and a second lower glass substrate 14 on upper and lower surfaces, and the first polarizing layer 1 is disposed on an upper surface of the first upper glass substrate 2.

The second polarizing layer 8 is a metal wire grid polarizer, and the metal wire grid polarizer includes a substrate and a metal wire grid disposed on the substrate.

The substrate is provided with a plurality of metal wire grids which are sequentially arranged, each metal wire grid comprises a metal strip and an opening arranged on one side of the metal strip, and the metal strips in the plurality of metal wire grids are parallel to each other.

The material of the metal strip is a metal material with a larger refractive index, such as one or more of aluminum (Al), silver (Ag), and gold (Au).

In this embodiment, the substrate, the first lower glass substrate 7, and the second upper glass substrate 9 are multiplexed on the same glass substrate. The metal wire grid can be arranged on the upper surface of the multiplexing glass substrate, and also can be arranged on the lower surface of the multiplexing glass substrate.

In this embodiment, the metal wire grid has a polarization function, and the arrangement position of the metal wire grid does not affect the function of the display module provided by this embodiment.

In an exemplary embodiment, the method for manufacturing the metal wire grid polarizer mainly includes the following main steps: depositing a metal film on a substrate, depositing a light resistance layer on the metal film, impressing the light resistance layer, solidifying the light resistance layer, removing the residual light resistance layer and etching the metal film by a dry method by taking the light resistance layer as a mask to obtain a metal wire, wherein the metal wire and the substrate form a metal wire grid polarizer.

During specific preparation, after the preparation of the second display panel is completed, the metal wire grids are prepared on the second upper glass substrate of the second display panel, and then the structure of the first display panel is prepared in sequence. The manufacturing method of the display module can also comprise the steps of firstly preparing the metal wire grid polarizer, then preparing the second display panel, laminating the metal wire grid polarizer on the second display panel, and then sequentially preparing the upper layer structure to finish the manufacturing of the display module.

Through this mode, further reduced display module's panel gross thickness, avoided laminating after the preparation bilayer, can simplify process flow, avoided double-deck laminating technology laminating precision not high, easily produce mole line scheduling problem.

In this embodiment, the first polarizing layer used in the present application is an existing polarizer, and will not be described in detail herein.

In a second aspect, the present application provides a driving method of a display module, applied to the display module described above, with reference to fig. 5, the method includes:

s1, judging the display gray scale of the first display panel;

s2, adjusting the working voltage of the second display panel according to the display gray scale of the first display panel;

and S3, driving the second display panel with different working voltages, and adjusting the refractive index of the electro-optical crystal to control the intensity of the reflected light of the second display panel entering the first display panel.

In this application embodiment, the light control layer includes a plurality of archs and cladding at the electro-optic crystal on protruding surface, wherein, bellied curved surface is the hemisphere reflectance coating, protruding distribution in the upper surface of second bottom electrode, no interval arrangement between a plurality of archs.

The hemispherical reflective film means that when light enters the optically thinner medium from the optically denser medium, total reflection occurs if the incident angle is larger than the total reflection angle. Therefore, when light enters the hemispherical reflective film, if it is surrounded by a low refractive index substance, total reflection occurs.

As shown in FIG. 6, the refractive index of the hemispherical reflective film is assumed to be n₁The refractive index of its peripheral material is n₂When the incident light irradiates the surface of the hemispherical reflective film, the total reflection angle theta is arcsinn₂/n₁By controlling n₁And n₂The refractive index ratio of (a) can change the magnitude of the total reflection angle.

As shown in FIG. 7, when n is₁>n₂When n is controlled, the incident light can be totally reflected₁And n₂The ratio may vary the reflected light intensity (θ)<θ₂<θ₁Incident light is less than the angle of total reflection). When n is₁＝n₂The reflected light intensity is zero, and the incident light is totally transmitted. The hemispherical reflective film can be prepared by nanoimprint technology, and other technologies can be standard technologies or modified technologies of the liquid crystal display screen.

In the embodiment of the application, the periphery of the convex curved surface is coated with the electro-optic crystal, and the refractive index of the electro-optic crystal material can be changed under the action of an external electric field.

The light ray control layer is used for changing the refractive index under the action of an electric field between the second upper electrode and the second lower electrode. That is, when a voltage is applied to the second upper electrode and the second lower electrode, an electric field is generated between the second upper electrode and the second lower electrode, and the refractive index of the light ray control layer may be changed following the change in the magnitude of the electric field by the electric field.

When the voltages on the second upper electrode and the second lower electrode are controlled, for example, the second upper electrode voltage is 0V, and the second lower electrode is +8V, so that the refractive index of the electro-optical crystal has a minimum value (much smaller than the refractive index of the hemispherical reflective film), the total reflection angle has a minimum value, the intensity of the reflected light is maximum at this time, the incident light is almost not transmitted, and the display gray scale of the corresponding first display panel is minimum at this time, as shown in fig. 8.

When the voltages on the second upper electrode and the second lower electrode are controlled, for example, the voltage of the second upper electrode is 0V, and the voltage of the second lower electrode is-8V, so that the refractive index of the electro-optical crystal is equal to the refractive index of the hemispherical reflective film, the intensity of the reflected light is zero, the incident light is completely transmitted, and the display gray scale of the corresponding first display panel is the highest at this time, as shown in fig. 9.

When the voltages of the second upper electrode and the second lower electrode are controlled, for example, the voltage of the second upper electrode is 0V, and the voltage of the second lower electrode is between-8V and 8V, the refractive index of the electro-optical crystal is between the refractive index of the hemispherical reflective film and the minimum refractive index, and the reflected light intensity of the second display panel is adjusted, so that the display of the first display panel is an intermediate gray scale, as shown in fig. 10.

It should be noted that the light control layer in this embodiment of the application is a hemispherical reflective film, and in other embodiments, the reflective light intensity may be adjusted by adjusting and controlling protrusions with other shapes and the electro-optical crystal, so as to implement total reflection and partial reflection.

Liquid Crystal Display (LCD) devices have many advantages such as thin body, power saving, and no radiation, and are widely used. Such as: liquid crystal televisions, mobile phones, Personal Digital Assistants (PDAs), digital cameras, computer screens, notebook computer screens, or the like. The terminal may be a liquid crystal television, a mobile phone, a Personal Digital Assistant (PDA), a digital camera, a computer, or a notebook computer. The terminal is often used in places needing personnel identity confirmation, such as an access control system, an attendance system, a notebook computer, bank internal processing, bank payment and the like.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed 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 of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a display module assembly, includes first display panel and the second display panel of range upon range of setting from top to bottom, its characterized in that still includes first polarisation layer and second polarisation layer, first display panel is including the first glass substrate, the first glass substrate that goes up that is located two upper and lower surfaces, second display panel is including the second glass substrate, the second glass substrate that goes up that is located two upper and lower surfaces, first polarisation layer sets up first glass substrate upper surface of going up, the second polarisation layer sets up the lower surface of glass substrate or setting are in under the second glass substrate first glass substrate with between the second glass substrate.

2. The display module of claim 1, wherein the first display panel is a liquid crystal display panel, the first upper glass substrate is a color glass substrate, the first display panel comprises a liquid crystal cell and a first upper electrode and a first lower electrode disposed on upper and lower surfaces of the liquid crystal cell, the first lower electrode is further disposed on a lower layer of the first display panel, and the first lower glass substrate is disposed on a lower surface of the first array substrate.

3. The display module according to claim 1, wherein the second display panel comprises a light control layer, and a second upper electrode and a second lower electrode disposed on two downward surfaces of the light control layer, the second upper electrode is disposed on an upper surface of the second upper electrode, the first lower electrode is further disposed on a lower layer of the second upper electrode, and the second lower electrode is disposed on a lower surface of the second lower array substrate.

4. The display module of claim 1, wherein the second polarizing layer is disposed on a lower surface of the second lower glass substrate, and the first lower glass substrate and the second upper glass substrate are multiplexed on the same glass substrate.

5. The display module of claim 1, wherein the second polarizing layer is disposed between the first lower glass substrate and the second upper glass substrate, the second polarizing layer being a wire grid polarizer, the wire grid polarizer comprising a base substrate and a wire grid disposed on the base substrate.

6. A display module according to claim 5, characterized in that the substrate is multiplexed with the first lower glass substrate or the second upper glass substrate, the wire grid being arranged between the first lower glass substrate and the second upper glass substrate.

7. The display module according to claim 5, wherein the substrate, the first lower glass substrate and the second upper glass substrate are multiplexed on the same glass substrate, and the metal wire grid is disposed on an upper surface or a lower surface of the multiplexed glass substrate.

8. The display module assembly according to claim 3, wherein the light ray control layer includes a plurality of protrusions and electro-optic crystals coated on the surfaces of the protrusions, the light incident surface of the protrusions is a plane, an interface between the protrusions and the electro-optic crystals is a curved surface, the light incident surface is close to the second array substrate, and the protrusions face away from the light incident surface.

9. A driving method of a display module, applied to the display module according to any one of claims 1 to 8, the method comprising:

judging the display gray scale of the first display panel;

10. A display device comprising the display module according to any one of claims 1 to 8.