CN117518542A - Display module and display device - Google Patents
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- CN117518542A CN117518542A CN202310337321.XA CN202310337321A CN117518542A CN 117518542 A CN117518542 A CN 117518542A CN 202310337321 A CN202310337321 A CN 202310337321A CN 117518542 A CN117518542 A CN 117518542A
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F2001/1678—Constructional details characterised by the composition or particle type
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The application provides a display module and a display device; the display module comprises a display panel, a collimation film layer arranged on one side of the display panel, and a light scattering structure arranged on one side of the collimation film layer away from the display panel, wherein the light scattering structure comprises a first substrate, a second substrate, a first electrode, a second electrode and a light scattering functional layer, the first substrate and the second substrate are oppositely arranged, the first electrode and the second electrode are oppositely arranged in a matrix form, the light scattering functional layer is arranged between the first substrate and the second substrate, the light scattering functional layer comprises potential transparent micro-nano particles and transparent filling liquid, a preset threshold alternating voltage is applied between the electrodes in a second display mode, the potential transparent micro-nano particles are gathered between the two electrodes, and the transparent filling liquid is uniformly distributed between the two substrates. According to the display panel, the voltage switching, the transparent micro-nano particles with the electric potential and the transparent filling liquid are utilized to control the transmission and scattering of light, so that the free switching of the wide view angle and the narrow view angle of the display panel is realized, and the energy consumption and the picture contrast difference of different view angles are reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to a display module and a display device.
Background
In the rapidly evolving information age, people are beginning to pay more and more attention to the protection of personal information. Therefore, part of electronic products can be provided with the peep-proof device on the display panel, so that the information of a large-angle visual angle is invisible.
In order to realize controllable peep-proof display, three modes are mainly proposed in the prior art: firstly, the light transmission mode and the non-light transmission mode are realized through an Electrophoretic Light Modulator (ELM) control device, so that the effect of display and non-display modes is achieved, however, the mode can not realize the switching between a narrow viewing angle mode and a wide viewing angle mode, and is not suitable for being applied to a display panel; secondly, the emergent state of light is controlled through Polymer Dispersed Liquid Crystal (PDLC) to achieve a display mode with a narrow viewing angle and a wide viewing angle, but the driving voltage of the mode when the display mode with the wide viewing angle is achieved is as high as 30V, so that the energy consumption of a display is overlarge, and privacy and sharing display effects corresponding to the narrow viewing angle and the wide viewing angle are not ideal; thirdly, whether a picture is displayed at a specific visual angle or not is realized by controlling the emergent light of the light rays at a specific angle through the back light of the switchable double light guide plates, but the influence of the upper light guide plate on the emergent light rays of the lower light guide plate in the backlight module in the mode is larger, and the contrast difference between the front view and the picture at a fixed angle is overlarge.
Therefore, the prior art has the technical problems that the free switching between the wide view angle and the narrow view angle of the display panel cannot be realized, the energy consumption is high, and the contrast difference between the front view and the fixed angle picture is overlarge, and needs to be improved.
Disclosure of Invention
The embodiment of the application provides a display module and a display device, which are used for solving the technical problems that the wide view angle and the narrow view angle of a display panel cannot be freely switched, the energy consumption is higher, and the contrast difference between the front view and the fixed angle is overlarge in the prior art.
The application provides a display module, including display panel with set up in the display viewing angle control structure of display panel one side, the display viewing angle control structure includes:
the collimation film layer is arranged on one side of the display panel;
the light scattering structure is arranged on one side of the collimation film layer far away from the display panel; the light scattering structure comprises:
the driving substrate comprises a first substrate and a second substrate which are oppositely arranged, wherein first electrodes and second electrodes in a matrix form are respectively arranged on the first substrate and the second substrate, and the first electrodes and the second electrodes are oppositely arranged;
the light scattering functional layer is arranged between the first substrate and the second substrate and comprises transparent micro-nano particles with potential and transparent filling liquid;
in a first display mode, no voltage is applied to the first electrode and the second electrode, and the transparent micro-nano particles with potential and the transparent filling liquid are uniformly distributed between the first substrate and the second substrate; in a second display mode, the first electrode and the second electrode apply preset threshold alternating voltage, the transparent micro-nano particles with potential are gathered between the first electrode and the second electrode, and the transparent filling liquid is uniformly distributed between the first substrate and the second substrate.
In the display module assembly of this application, the display module assembly still includes the backlight, the backlight sets up display panel deviates from the one side of collimation rete.
In the display module assembly of this application, the collimation rete includes the peep-proof rete, the structure of peep-proof rete is superfine shutter.
In the display module of the present application, the materials of the first electrode and the second electrode include transparent conductive materials.
In the display module of the application, the refractive indexes of the transparent micro-nano particles with the electric positions and the transparent filling liquid are different.
In the display module of the application, the transparent micro-nano particles with the electric potential comprise modified indium tin oxide micro-nano particles with the electric potential, and the transparent filling liquid comprises tetrachloroethylene filling liquid, isoparaffin type solvent oil filling liquid and dodecylbenzene filling liquid.
In the display module, the modified indium tin oxide micro-nano particles are obtained by performing surface treatment on the indium tin oxide micro-nano particles by using a KH-570 silane coupling agent as a modifier.
In the display module of the application, the modified indium tin oxide micro-nano particles comprise St/DVB modified indium tin oxide micro-nano particles.
In the display module, the modified indium tin oxide micro-nano particles with the electric potential repel each other in a state of stopping applying the voltage.
The application also provides a display device, which comprises the display module set of any one of the above.
The beneficial effects are that: the application provides a display module and a display device; the display module comprises a display panel and a display visual angle control structure arranged on one side of the display panel, wherein the display visual angle control structure comprises a collimation film layer arranged on one side of the display panel and a light scattering structure arranged on one side of the collimation film layer far away from the display panel, the light scattering structure comprises a driving substrate and a light scattering functional layer, the driving substrate comprises a first substrate and a second substrate which are oppositely arranged, a first electrode and a second electrode which are in a matrix form are respectively arranged on the first substrate and the second substrate, the first electrode and the second electrode are oppositely arranged, the light scattering functional layer is arranged between the first substrate and the second substrate, and the light scattering functional layer comprises transparent micro-nano particles with potential and transparent filling liquid; in a first display mode, no voltage is applied to the first electrode and the second electrode, and the transparent micro-nano particles with potential and the transparent filling liquid are uniformly distributed between the first substrate and the second substrate; in a second display mode, the first electrode and the second electrode apply preset threshold alternating voltage, the transparent micro-nano particles with potential are gathered between the first electrode and the second electrode, and the transparent filling liquid is uniformly distributed between the first substrate and the second substrate. According to the display device, through voltage switching, the characteristics of the transparent micro-nano particles with potential in the light scattering functional layer under different voltage intensities are utilized, and the transmission and scattering of light rays passing through the light scattering functional layer are controlled, so that the free switching of wide view angles and narrow view angles of the display panel is realized, the display purpose of dynamic peeping prevention is achieved, meanwhile, the driving voltage is low during the view angle switching, the energy consumption is effectively reduced, the wide view angle is in a full view angle display mode, and the display device has higher contrast, therefore, the difference of picture contrast between different view angles, namely the difference of picture contrast of front view and fixed angle, is reduced.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present application.
Fig. 2 is a schematic structural layout of an electrode according to an embodiment of the present application.
Fig. 3 is a side view of an electrode and a substrate in a display module according to an embodiment of the present application.
Fig. 4 is a front view of an electrode and a substrate in a display module according to an embodiment of the present application.
Fig. 5 is a schematic view of light in a sharing display mode according to an embodiment of the present application.
Fig. 6 is a schematic view of light in a privacy display mode according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.
The embodiment of the application provides a display module and a display device, which are used for realizing free switching of a wide view angle and a narrow view angle of a display panel and reducing energy consumption and picture contrast difference of front view and fixed angle.
In order to protect privacy information, part of electronic products are provided with peep-proof devices on display panels thereof to realize invisible large-angle visual angle information, and in the prior art, controllable peep-proof display is usually realized by adopting technologies such as an Electrophoretic Light Modulator (ELM), polymer Dispersed Liquid Crystal (PDLC), switchable double light guide plate backlight and the like. In particular, an Electrophoretic Light Modulator (ELM) consists of a suitable electrophoretic ink encapsulated between two substrates, both covered by patterned electrodes for generating electric field lines and inducing movement of the electrophoretic pigment in the electrophoretic ink, which device blocks light and restricts the transmission of light in the absence of an electric field, and which device becomes transparent in the presence of an applied electric field, in which way, however, light-transmissive and non-light-transmissive modes are achieved, whereby a display and non-display effect is achieved, and switching between a narrow viewing angle and a wide viewing angle mode is not achieved; polymer Dispersed Liquid Crystal (PDLC) is that liquid crystal is dispersed in an organic solid polymer matrix as small droplets of micrometer scale, in a natural state, the optical axis of the small droplets composed of liquid crystal molecules is in free orientation, the refractive index of the small droplets is not matched with that of the organic solid polymer matrix, when light passes through the organic solid polymer matrix and is strongly scattered by the droplets to be in an opaque milky state or a semitransparent state, an electric field is applied to adjust the optical axis orientation of the liquid crystal droplets, when the refractive indexes of the small droplets are matched, the small droplets are in a transparent state, the electric field is removed, the liquid crystal droplets recover the original astigmatic state, so that narrow-view and wide-view display can be performed, however, in this way, the driving voltage for realizing a wide-view display mode is as high as 30V, the energy consumption is excessive for a display device, and the display effect corresponding to the narrow-view and the wide-view is not ideal; in the switchable dual light guide plate backlight technology, two groups of Light Guide Plates (LGP) backlight are designed in a backlight module of an LCD, one group of light guide plates emits collimated light, the other group of light guide plates emits single-side oblique light, the light guide plates emitting the collimated light are independently turned on to be in a privacy mode, and meanwhile, the two groups of light guide plates are turned on to be in a sharing mode, however, because the influence of an upper light guide plate on the emergent light of a lower light guide plate in the backlight module is larger, the contrast difference between a front view and a fixed angle picture is overlarge.
Therefore, the embodiment of the application provides a display module capable of realizing free switching between a wide viewing angle and a narrow viewing angle of a display panel, effectively reducing energy consumption, and reducing contrast difference between images at different viewing angles, as shown in fig. 1, fig. 1 is a schematic structural diagram of the display module provided in the embodiment of the application, the display module includes a display panel 10 and a display viewing angle control structure 20 disposed at one side of the display panel 10, and the display viewing angle control structure 20 includes:
a collimation film layer 21 arranged on one side of the display panel 10;
the light scattering structure 22 is arranged on one side of the collimation film layer 21 far away from the display panel 10; the light scattering structure 22 comprises:
a driving substrate 221, wherein the driving substrate 221 includes a first substrate 2211 and a second substrate 2214 disposed opposite to each other, and first electrodes 2212 and second electrodes 2213 are disposed on the first substrate 2211 and the second substrate 2214 in a matrix form, respectively, and the first electrodes 2212 and the second electrodes 2213 are disposed opposite to each other;
a light scattering functional layer 222 disposed between the first substrate 2211 and the second substrate 2214, the light scattering functional layer 222 including transparent micro-nano particles with potential and transparent filling liquid;
in the first display mode, no voltage is applied to the first electrode 2212 and the second electrode 2213, and the transparent micro-nano particles with potential and the transparent filling liquid are uniformly distributed between the first substrate 2211 and the second substrate 2214; in the second display mode, the first electrode 2212 and the second electrode 2213 apply a preset threshold alternating voltage, the transparent micro-nano particles with potential are gathered between the first electrode 2212 and the second electrode 2213, and the transparent filling liquid is uniformly distributed between the first substrate 2211 and the second substrate 2214.
The first display mode is a sharing display mode, and the second display mode is a privacy display mode.
Specifically, the display panel 10 may include an array substrate, a color film substrate, and the like. The array substrate may include a thin film transistor, a scan line, a data line, a pixel electrode, a common electrode, etc.; the color film substrate may include a black matrix, an RGB color resist layer, and the like. It should be noted that, these structural layers only briefly describe a part of the structure and components of the display panel 10, but are not limited thereto, and the display panel 10 may further include various other components, for example, a liquid crystal layer, a frame glue, etc. may be further disposed between the array substrate and the color film substrate, and these details may be implemented with reference to the prior art and are not described herein again.
Further, the electrically-charged transparent micro-nano particles and the transparent filler liquid may be collectively referred to as a transparent electrophoretic material. Specifically, a user may switch between a first display mode and a second display mode by switching a driving voltage, in the first display mode, as shown in fig. 5, fig. 5 is a schematic light diagram in the shared display mode provided in this embodiment of the present application, no voltage is applied between the first electrode 2212 and the second electrode 2213, under the condition that no power is applied, the transparent micro-nano particles with potential are uniformly dispersed between the first substrate 2211 and the second substrate 2214, and the transparent filling liquid is not affected by an electric field, so that the transparent micro-nano particles with potential and the transparent filling liquid refract and scatter the light passing through (i.e. the collimated light emitted by the collimating film layer) to form scattered light, only the wide-view display screen is visible, and the wide-view display screen at this time is the full-view display mode and has a higher contrast ratio; in the second display mode, as shown in fig. 6, fig. 6 is a schematic light diagram in the privacy display mode provided in this embodiment of the present application, a low-frequency alternating voltage is applied between the first electrode 2212 and the second electrode 2213, that is, the display viewing angle control structure 20 is driven by electrifying, at this time, the transparent micro-nano particles with electric sites are collected between the first electrode 2212 and the second electrode 2213 of the electric field due to electrophoresis phenomenon, and the transparent filling liquid is still uniformly distributed between the first substrate 2211 and the second substrate 2214 without being affected by the electric field, at this time, the transparent micro-nano particles with electric potential and the transparent filling liquid respectively generate a transmission effect on the collimated light emitted by the collimating film layer 21, so as to form a transmitted light, and only the display screen with a narrow viewing angle is visible.
According to the display device, the switching of the narrow-view display picture and the wide-view display picture can be realized by switching the driving voltage, so that the switching of the privacy display mode and the sharing display mode is freely controlled, meanwhile, the wide-view display picture has higher contrast, and pictures with different view angles are not influenced by the light guide plate, so that the difference of picture contrast between the front view and the fixed angle is effectively reduced, the driving voltage for switching the view angles is lower, and the energy consumption of the display module can be effectively reduced.
In one embodiment, the display module further includes a backlight 30, where the backlight 30 is disposed on a side of the display panel 10 facing away from the collimating film layer 21. The light emitted from the backlight 30 is collimated by the collimating film layer 21, and forms collimated light to be incident into the light scattering structure 22.
In one embodiment, the display view angle control structure 20 includes a collimation film layer 21 and a light scattering structure 22, where the collimation film layer 21 includes a peep-proof film layer, and the peep-proof film layer 21 is configured as an ultra-fine shutter. Specifically, the collimating film layer 21 can limit the light rays with a large angle in the scattering state to pass through, but not limit the light rays with a small angle, and in this embodiment of the present application, the collimating film layer 21 can act on the light rays emitted from the backlight 30, so as to emit the collimated light rays to the light scattering structure 22.
Further, the light scattering structure 22 includes a driving substrate 221 and a light scattering functional layer 222, and the driving substrate 221 is formed by arranging a patterned electrode matrix group on an upper substrate and a lower substrate. The materials of the first substrate 2211 and the second substrate 2214 may be independent or the same, and the materials thereof need to have high light transmittance, for example, transparent glass, transparent resin, and the like. By using a substrate with higher transmittance, display performance is improved.
In one embodiment, the material of the first electrode 2212 and the second electrode 2213 includes a transparent conductive material, such as indium tin oxide, indium zinc oxide, indium gallium zinc oxide, or aluminum doped zinc oxide material, or the like. As shown in fig. 2, fig. 2 is a schematic structural layout of an electrode provided in an embodiment of the present application, where a first electrode 2212 and a second electrode 2213 are patterned to form a matrix form as shown in fig. 2, and are respectively disposed on a first substrate 2211 and a second substrate 2214, where the first electrode 2212 and the second electrode 2213 are disposed opposite to each other, as shown in fig. 3 and fig. 4, fig. 3 is a side view of the electrode and the substrate in the display module provided in an embodiment of the present application, and fig. 4 is a front view of the electrode and the substrate in the display module provided in an embodiment of the present application, optionally, a projection of the second electrode 2213 on the display panel 10 coincides with a projection of the first electrode 2212 on the display panel 10. Through using transparent electrode, improved the transmissivity of light, and first electrode and second electrode set up respectively on two base plates with the matrix form, under the state that first electrode and second electrode applyed the voltage, first electrode and second electrode can regard as two polar plates of electric field respectively, form spaced little electric field, do not set up the region of electrode and do not exist the electric field promptly to make the transparent micro-nano particle removal of band potential in light scattering function layer through switching voltage follow-up in order to control light's transmission and scattering.
It should be noted that, in the embodiment of the application, by using the transparent electrode and the transparent electrophoresis material, the transmittance of light is improved, so that the display effect is improved.
In one embodiment, the refractive indices of the electrically charged transparent micro-nanoparticles and the transparent filler liquid are different. Because the refractive indexes of the transparent micro-nano particles with potential and the transparent filling liquid are different, under the condition that no voltage is applied, the light can be scattered when passing through the light scattering functional layer, so that a wide-view angle display mode is realized, the wide-view angle display mode is a full-view angle display mode, and the large-view angle has higher contrast ratio.
In one embodiment, the electrically-charged transparent micro-nanoparticles comprise electrically-charged modified indium tin oxide micro-nanoparticles, and the transparent filler fluid comprises tetrachloroethylene filler fluid, isoparaffin filler fluid, and dodecylbenzene filler fluid.
In one embodiment, the modified indium tin oxide micro-nano particles are obtained by surface treatment of the indium tin oxide micro-nano particles by using KH-570 silane coupling agent as a modifier.
In one embodiment, the modified indium tin oxide micro-nanoparticles include St/DVB modified indium tin oxide micro-nanoparticles.
Specifically, the preparation process of the modified indium tin oxide micro-nano particles with potential can comprise the following steps: firstly, carrying out surface treatment on indium tin oxide micro-nano particles by using KH-570 silane coupling agent as a modifier to obtain modified indium tin oxide micro-nano particles; then adding modified indium tin oxide micro-nano particles into an ethanol solution system of styrene (St), divinylbenzene (DVB), polyvinylpyrrolidone K30 (PVP) and N, N-Methylene Bisacrylamide (MBAM); finally, adding an ethanol solution of Azodiisobutyronitrile (AIBN) at a preset temperature (for example, 45-65 ℃) to react for a certain period of time, and obtaining the St/DVB modified indium tin oxide micro-nano particles.
In one embodiment, the potentiometrically modified indium tin oxide micro-nanoparticles repel each other in the stopped voltage state. Specifically, when the voltage application is stopped, the modified indium tin oxide micro-nano particles with potential have higher Zeta potential and repel each other, so that a light scattering system with stable dispersion is formed rapidly, that is, the response time is shorter when the narrow view angle is switched to the wide view angle, and the switching efficiency is improved.
The application also provides a display device, which comprises the display module set in any embodiment. According to the display device, the privacy of the display device and the flexibility of peeping prevention operation are improved by arranging the display module with the controllable peeping prevention function, the free switching of the wide view angle and the narrow view angle of the display panel is realized, the privacy display mode and the sharing display mode can be freely controlled, the purpose of dynamic peeping prevention is achieved, and the energy consumption of the display device and the contrast difference of display pictures at different view angles are reduced.
As can be seen from the above embodiments:
the application provides a display module and a display device; the display module comprises a display panel and a display visual angle control structure arranged on one side of the display panel, wherein the display visual angle control structure comprises a collimation film layer arranged on one side of the display panel and a light scattering structure arranged on one side of the collimation film layer far away from the display panel, the light scattering structure comprises a driving substrate and a light scattering functional layer, the driving substrate comprises a first substrate and a second substrate which are oppositely arranged, a first electrode and a second electrode which are in a matrix form are respectively arranged on the first substrate and the second substrate, the first electrode and the second electrode are oppositely arranged, the light scattering functional layer is arranged between the first substrate and the second substrate, and the light scattering functional layer comprises transparent micro-nano particles with potential and transparent filling liquid; in a first display mode, no voltage is applied to the first electrode and the second electrode, and the transparent micro-nano particles with potential and the transparent filling liquid are uniformly distributed between the first substrate and the second substrate; in a second display mode, the first electrode and the second electrode apply preset threshold alternating voltage, the transparent micro-nano particles with potential are gathered between the first electrode and the second electrode, and the transparent filling liquid is uniformly distributed between the first substrate and the second substrate. According to the display device, through voltage switching, the characteristics of the transparent micro-nano particles with potential in the light scattering functional layer under different voltage intensities are utilized, and the transmission and scattering of light rays passing through the light scattering functional layer are controlled, so that the free switching of wide view angles and narrow view angles of the display panel is realized, the display purpose of dynamic peeping prevention is achieved, meanwhile, the driving voltage is low during the view angle switching, the energy consumption is effectively reduced, the wide view angle is in a full view angle display mode, and the display device has higher contrast, therefore, the difference of picture contrast between different view angles, namely the difference of picture contrast of front view and fixed angle, is reduced.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The display module and the display device provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and the implementation of the present application, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The utility model provides a display module assembly, its characterized in that includes display panel and set up in the display viewing angle control structure of display panel one side, display viewing angle control structure includes:
the collimation film layer is arranged on one side of the display panel;
the light scattering structure is arranged on one side of the collimation film layer far away from the display panel; the light scattering structure comprises:
the driving substrate comprises a first substrate and a second substrate which are oppositely arranged, wherein first electrodes and second electrodes in a matrix form are respectively arranged on the first substrate and the second substrate, and the first electrodes and the second electrodes are oppositely arranged;
the light scattering functional layer is arranged between the first substrate and the second substrate and comprises transparent micro-nano particles with potential and transparent filling liquid; the method comprises the steps of carrying out a first treatment on the surface of the
In a first display mode, no voltage is applied to the first electrode and the second electrode, and the transparent micro-nano particles with potential and the transparent filling liquid are uniformly distributed between the first substrate and the second substrate; in a second display mode, the first electrode and the second electrode apply preset threshold alternating voltage, the transparent micro-nano particles with potential are gathered between the first electrode and the second electrode, and the transparent filling liquid is uniformly distributed between the first substrate and the second substrate.
2. The display module of claim 1, further comprising a backlight disposed on a side of the display panel facing away from the collimating film layer.
3. The display module of claim 1, wherein the collimating film comprises a privacy film having an ultra-fine louver structure.
4. The display module of claim 1, wherein the material of the first electrode and the second electrode comprises a transparent conductive material.
5. The display module of claim 1, wherein the refractive indices of the electrically-charged transparent micro-nano particles and the transparent filler liquid are different.
6. The display module of claim 1, wherein the electrically-charged transparent micro-nano particles comprise electrically-charged modified indium tin oxide micro-nano particles, and the transparent filling liquid comprises tetrachloroethylene filling liquid, isoparaffin filling liquid and dodecylbenzene filling liquid.
7. The display module of claim 6, wherein the modified indium tin oxide micro-nano particles are obtained by surface treatment of indium tin oxide micro-nano particles by using KH-570 silane coupling agent as a modifier.
8. The display module of claim 6, wherein the modified indium tin oxide micro-nanoparticles comprise St/DVB modified indium tin oxide micro-nanoparticles.
9. The display module of claim 6, wherein the modified indium tin oxide micro-nanoparticles with the charge sites repel each other in a state where the application of voltage is stopped.
10. A display device comprising a display module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310337321.XA CN117518542A (en) | 2023-03-28 | 2023-03-28 | Display module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310337321.XA CN117518542A (en) | 2023-03-28 | 2023-03-28 | Display module and display device |
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| CN117518542A true CN117518542A (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310337321.XA Pending CN117518542A (en) | 2023-03-28 | 2023-03-28 | Display module and display device |
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