CN113900299A - Display module and display device - Google Patents
Display module and display device Download PDFInfo
- Publication number
- CN113900299A CN113900299A CN202111110561.3A CN202111110561A CN113900299A CN 113900299 A CN113900299 A CN 113900299A CN 202111110561 A CN202111110561 A CN 202111110561A CN 113900299 A CN113900299 A CN 113900299A
- Authority
- CN
- China
- Prior art keywords
- light
- substrate
- display
- layer
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 76
- 239000004988 Nematic liquid crystal Substances 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 239000005264 High molar mass liquid crystal Substances 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 110
- 239000010408 film Substances 0.000 claims description 66
- 239000012528 membrane Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 240000005002 Erythronium dens canis Species 0.000 claims description 4
- 230000010287 polarization Effects 0.000 description 34
- 230000000694 effects Effects 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 208000008918 voyeurism Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Images
Classifications
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses a display assembly and a display device, wherein the display device comprises the display assembly, the display assembly comprises a peep-proof film and a display panel, the peep-proof film comprises a first substrate and a second substrate which are arranged at intervals, the first substrate is provided with a first electrode layer, the second substrate is provided with a second electrode layer, a polymer and nematic liquid crystal are filled between the first electrode layer and the second electrode layer, and the second substrate is arranged on the light inlet side of the display panel and is positioned between the display panel and the first substrate; the display assembly further comprises a polarizing layer, wherein the polarizing layer is arranged on one side, back to the second substrate, of the first substrate and is used for forming polarized light entering the peep-proof film and the display panel. The display module provided by the application has better display brightness.
Description
Technical Field
The present disclosure relates to liquid crystal display technologies, and particularly to a display module and a display device.
Background
In a PDLC (polymer dispersed liquid crystal) architecture of a display technology, a mixture of an organic polymer and liquid crystal is filled between two conductive electrode layers, and an electric field capable of driving liquid crystal molecules to deflect is generated between the two conductive electrodes by electrifying the two conductive electrodes, so that the light-emitting visual angle of the whole PDLC architecture is adjusted. The PDLC structure is commonly used to fabricate a privacy film and is applied in a display device to provide the display device with privacy function.
In the related art, the privacy film is disposed at the light-emitting side of the backlight module in the display device, the outgoing polarized light of the backlight module firstly passes through the privacy film and then enters the lower polarizer of the display panel, because a space exists between the privacy film and the lower polarizer, the outgoing polarized light of the backlight module firstly enters the space between the privacy film and the lower polarizer when passing through the privacy film, and because the refractive index of the privacy film is not matched with that of air, the polarized light of the outgoing privacy film will be refracted and dispersed when entering the air in the space, resulting in a decrease in the polarized light component perpendicular to the absorption axis of the lower polarizer and a generation of a polarized light component parallel to the absorption axis of the lower polarizer, while only the polarized light component perpendicular to the absorption axis of the lower polarizer can be continuously transmitted through the lower polarizer, which results in a decrease in the transmittance of the outgoing polarized light of the backlight module on the lower polarizer, the display brightness of the display panel is reduced accordingly.
Disclosure of Invention
The main objective of this application is to provide a display module, aim at through setting up peep-proof membrane and polarisation layer in display panel's the side of admitting light, avoid being shaded and produce the dispersion loss when inciding to the air bed between peep-proof membrane and the display panel through peep-proof membrane, promote the display brightness of display panel in the display device who has the peep-proof membrane.
In order to achieve the above purpose, the present application provides a display module, which includes a privacy film and a display panel, where the privacy film includes a first substrate and a second substrate that are arranged at an interval, the first substrate is provided with a first electrode layer, the second substrate is provided with a second electrode layer, and a polymer and a nematic liquid crystal are filled between the first electrode layer and the second electrode layer;
the second substrate is arranged on the light inlet side of the display panel and is positioned between the display panel and the first substrate;
the display assembly further comprises a polarizing layer, wherein the polarizing layer is arranged on one side, back to the second substrate, of the first substrate and is used for forming polarized light incident to the peep-proof film and the display panel.
In an embodiment of the present application, the polarizing layer includes:
the light-transmitting layer is arranged on one side, back to the second substrate, of the first substrate; and
the metal layer comprises a plurality of grid bars, each grid bar is arranged on one side, back to the first substrate, of the light transmission layer, the grid bars are arranged at intervals along the length direction of the display panel, and a light transmission area is formed between any two adjacent grid bars.
In an embodiment of the present application, the width of the grid bars along the length direction of the display panel is defined as w, w is greater than or equal to 50nm and less than or equal to 150 nm;
and/or defining the height of the grid bars as h, wherein h is more than or equal to 100nm and less than or equal to 200 nm;
and/or defining the distance between any two adjacent grid bars as d, wherein d is more than or equal to 100nm and less than or equal to 200 nm.
In an embodiment of the application, the light-transmissive layer and the metal layer are an integrally formed structure.
In an embodiment of the present application, the polarizing layer is a polarizer, and the polarizer is bonded to the first substrate.
In an embodiment of the application, the display module further includes a light-transmitting adhesive layer, and the light-transmitting adhesive layer is disposed on one side of the display panel facing the second substrate and is bonded to the second substrate.
In addition, the present application also proposes a display device including:
the display module described above; and
the display assembly is arranged on the light emitting side of the backlight module, and the polarizing layer of the display assembly is positioned between the backlight module and the peep-proof film of the display assembly.
In an embodiment of the present application, the backlight module includes:
a light modulating film on one side of the polarizing layer of the display assembly;
the light guide plate is positioned on one side, back to the polarizing layer, of the light adjusting film sheet;
the reflector plate is positioned on one side of the light guide plate, which faces away from the dimming diaphragm; and
and the light source is positioned on one side of the light guide plate.
In an embodiment of the application, a plurality of first convex tooth structures are arranged on one side of the light guide plate facing the reflector plate, and the plurality of first convex tooth structures are sequentially connected along a first direction;
the light guide plate dorsad one side of reflector plate is equipped with a plurality of second dogtooth structures, and is a plurality of the second dogtooth structure connects gradually along the second direction and sets up, just the second direction with first direction is perpendicular.
In an embodiment of the present application, a plurality of prism structures are disposed on a side of the light modulation film facing the light guide plate.
The display module among this application technical scheme sets up in display panel light incoming side through setting up the peep-proof membrane adjustment in the backlight unit side originally, sets up the polarisation layer at peep-proof membrane back of the body display panel's income plain noodles, leads to the polarisation layer and replaces display panel's lower polaroid to form the polarized light of incidenting display panel, and the polarized light contracts or expands under the adjusting luminance of peep-proof membrane and diverges the angle, makes display panel correspond and gets into narrow visual angle display state or wide visual angle display state. Because the polarisation layer is laminated with the peep-proof membrane mutually, do not have the air between polarisation layer and the peep-proof membrane, when polarized light incides display panel, polarized light will maintain its former polarization state under the effect of polarisation layer, make the polarized light of target polarization direction pass and directly incite the peep-proof membrane simultaneously, polarized light can not produce refraction and dispersion between polarisation layer and peep-proof membrane, so in polarized light can get into display panel with its former polarization state, the problem that the peep-proof membrane and display panel can't be incided to the equivalent amount of polarized light that brings when having avoided the polarization state of polarized light to change, be favorable to promoting display panel's demonstration luminance.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
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 the privacy film of FIG. 1 with the polarizing layer in the power-off state;
FIG. 3 is a schematic structural diagram of the privacy film of FIG. 1 with the polarizing layer in the powered-on state;
FIG. 4 is a schematic view of the structure of the polarizing layer of FIG. 1;
FIG. 5 is a schematic view of the light guide plate shown in FIG. 1;
fig. 6 is a schematic structural diagram of a display device according to a second embodiment of the present application.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
32 | Metal layer |
| 11 | |
321 | Grid bar |
| 12 | |
322 | Light-transmitting |
| 2 | Peep-proof film | 4 | Light-transmitting |
| 21 | First substrate | 5 | |
| 22 | |
51 | Light modulation diaphragm |
| 23 | A |
511 | Prism structure |
| 24 | A |
52 | |
| 25 | Polymer and method of making same | 521 | First |
| 26 | Nematic |
522 | Second |
| 3 | Polarizing |
53 | |
| 31 | Light-transmitting layer | 54 | Light source |
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all the directional indications (such as up, down, left, right, front, and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout this document, "and/or" is meant to include three juxtaposed aspects, exemplified by "A and/or B," including either the A aspect, or the B aspect, or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
The first embodiment is as follows:
the embodiment of the application provides a display assembly, as shown in fig. 1, the display assembly includes a privacy film 2 and a display panel 1 having a color film substrate 11 and an array substrate 12, the privacy film 2 includes a first substrate 21 and a second substrate 22 arranged at intervals, the first substrate 21 is provided with a first electrode layer 23, the second substrate 22 is provided with a second electrode layer 24, and a polymer 25 and a nematic liquid crystal 26 are filled between the first electrode layer 23 and the second electrode layer 24; the second substrate 22 is arranged on one side of the array substrate 12 opposite to the color filter substrate 11 and located between the array substrate 12 and the first substrate 21; the display assembly further comprises a polarizing layer 3, the polarizing layer 3 being provided on a side of the first substrate 21 facing away from the second substrate 22 and being used to form polarized light incident on the privacy film 2 and the display panel 1.
In this embodiment, the display panel 1 is used for image display, the display panel 1 includes a color film substrate 11 and an array substrate 12, which are arranged for each display, liquid crystal is filled between the color film substrate 11 and the array substrate 12, and the color film substrate 11, the liquid crystal and the array substrate 12 are packaged into a liquid crystal box.
As shown in fig. 2, when the first electrode layer 23 and the second electrode layer 24 in the privacy film 2 are powered off, no electric field is formed between the first electrode layer 23 and the second electrode layer 24, the optical axes of the nematic liquid crystal 26 molecules dispersed in the polymer 25 are preferentially oriented, at this time, the equivalent refractive index of the nematic liquid crystal 26 molecules is not matched with the refractive index of the polymer 25, and the privacy film 2 emits light to enter the optical viewing angle display state; as shown in fig. 3, when the first electrode layer 23 and the second electrode layer 24 in the privacy film 2 are energized, an electric field is formed between the first electrode layer 23 and the second electrode layer 24, the nematic liquid crystal molecules dispersed in the polymer 25 deflect under the action of the electric field, the optical axes of the nematic liquid crystal 26 molecules are aligned in the same direction, the equivalent refractive index of the nematic liquid crystal 26 molecules matches with the refractive index of the polymer 25, and the privacy film 2 emits light in parallel to enter a narrow viewing angle display state.
The second substrate 22 of the anti-peeping film 2 is arranged on the array substrate 12 of the display panel 1 and is located on one side of the array substrate 12 opposite to the color film substrate 11; the polarizing layer 3 is attached to a side, opposite to the second substrate 22, of the first substrate 21 of the privacy film 2, the display panel 1 enters light from the array substrate 12 side and emits light from the color film substrate 11 side, when polarized light enters the display panel 1, the polarized light becomes target polarized light with a specific polarization direction under the polarization effect of the polarizing layer 3, and the target polarized light enters the display panel 1 after the divergence angle of the target polarized light is adjusted through the privacy film 2. Because polarisation layer 3 and peep-proof membrane 2 are laminated mutually, do not have the air between polarisation layer 3 and peep-proof membrane 2, when polarized light incides display panel 1, polarized light will maintain its former polarization state under the effect of polarisation layer 3, make the polarized light of target polarization direction pass simultaneously and directly incide peep-proof membrane 2, polarized light can not produce refraction and dispersion between polarisation layer 3 and peep-proof membrane 2, so in polarized light can get into display panel 1 with its former polarization state, the unable problem of inciding peep-proof membrane 2 and display panel 1 of the equivalent amount of polarized light that brings when having avoided the polarization state of polarized light to change, be favorable to promoting display panel 1's display brightness. The polarization state of the light includes linear polarization, circular polarization, elliptical polarization, and the like, the unchanged polarization state of the light means that the polarization state and the polarization direction of the light are not changed, the polarized light entering the display panel 1 retains the original polarization state when passing through the polarizing layer 3, and under the screening effect of the polarizing layer 3 on the polarized light, only the polarized light component in accordance with the specific polarization direction can pass through the polarizing layer 3, and the polarized light components in other polarization directions are filtered by the polarizing layer and cannot enter the peep-proof film 2 and the display panel 1, so that the polarizing layer 3 can replace the function of the lower polarizer in the display panel 1, the light entering the display panel 1 becomes the target polarized light, and the lower polarizer in the display panel 1 can be removed.
In an embodiment of the present application, as shown in fig. 1 and fig. 4, the polarizing layer 3 includes a light-transmissive layer 31 and a metal layer 32, the light-transmissive layer 31 is disposed on a side of the first substrate 21 opposite to the second substrate 22; the metal layer 32 includes a plurality of grid bars 321, each grid bar 321 is disposed on a side of the transparent layer 31 opposite to the first substrate 21, the plurality of grid bars 321 are disposed at intervals along a length direction of the display panel, and a transparent region 322 is formed between any two adjacent grid bars 321.
In this embodiment, the light-transmitting layer 31 may be made of a transparent material, such as glass, polymethyl methacrylate, resin, etc., the metal layer 32 may be made of a metal, such as gold, copper, aluminum, etc., the metal layer 32 may be first plated on the light-transmitting layer 31 and then the metal layer 32 is etched into a plurality of grid bars 321 arranged periodically by an etching process, such that the light-transmitting layer 31 and the plurality of grid bars 321 form a grid structure, the grid structure will absorb or reflect polarized light with a polarization direction parallel to the extension direction of the grid bars 321, and at the same time allow polarized light with a polarization direction perpendicular to the extension direction of the grid bars 321 to pass through, such that when the polarized light incident to the display panel 1 has a polarization component with a polarization direction perpendicular to the extension direction of the grid bars 321 and a polarization component with a polarization direction parallel to the extension direction of the grid bars 321, only the polarization component perpendicular to the extension direction of the grid bars 321 can enter the privacy film 2 and the display panel 1 through the light-transmitting region 322 and the light-transmitting layer 31, thus, the polarized light entering the display panel 1 is screened, and the polarized light entering the display panel 1 is ensured to be the polarized light in the target polarization direction.
Optionally, as shown in FIG. 4, the width of the grid bars 321 along the length direction of the display panel is defined as w, w is greater than or equal to 50nm and less than or equal to 150 nm; and/or, the height of the grid bars 321 is defined as h, wherein h is more than or equal to 100nm and less than or equal to 200 nm; and/or, the distance between any two adjacent grid bars 321 is defined as d, and d is more than or equal to 100nm and less than or equal to 200 nm. By defining the width w of the grid 321 in the length direction of the array substrate 12 to be 50nm or more and 150nm or less; and/or, the height h of the grid bars 321 is defined to be more than or equal to 100nm and less than or equal to 200 nm; and/or the distance d between any two adjacent grid bars 321 is limited to be more than or equal to 100nm and less than or equal to 200nm, so that the light transmission region 322 between the adjacent grid bars 321 can be ensured to have proper size and space, the light transmission region 322 can become a slit capable of filtering polarized light, and the situation that the width w of the grid bars 321 is less than 50nm or more than 150nm is avoided; or, the distance between the grid bars 321 is less than 100nm or more than 200 nm; or, when the height of the grid bars 321 is less than 100nm or more than 200nm, the polarized light filtering effect of the polarizing layer 3 is not good, and the polarized light in the target polarization direction cannot be obtained, which affects the display effect of the display panel 1.
Optionally, the polarizing layer 3 is a polarizer, and the polarizer is adhered to the first substrate 21. Both the polarizer and the grating structure may be used to screen polarized light, so that the polarized light component in the target polarization direction passes through and absorbs or reflects the polarized light component in the non-target polarization direction, specifically, the polarized light component in the polarization direction parallel to the absorption axis of the polarizer is absorbed or reflected by the polarizer, and the polarized light component in the polarization direction perpendicular to the absorption axis of the polarizer can pass through the polarizer. The advantage of providing the polarizing layer 3 with the grating structure including the light transmissive layer 31 and the metal layer 32 is that the light transmissive layer 31 and the metal layer 32 can be integrally formed, so that the need of separately attaching the polarizer to the first substrate 21 of the privacy film 2 is avoided, which is beneficial to reducing the thickness and weight of the polarizing layer 3 and realizing the light-weighted design of the display module. The polarizer is directly bonded and attached to the first substrate 21 of the peep-proof film 2 instead of the grating structure, so that the manufacturing cost of the polarizer is relatively lower because the polarizer is mature in manufacturing process, the operation difficulty of attaching the polarizer to the first substrate 21 through the adhesive is not high, the attachment of the polarizer and the first substrate 21 is easy to operate and realize, the overall processing and manufacturing cost is lower, and the processing difficulty and the processing cost of the display assembly are favorably reduced.
In an embodiment of the present application, as shown in fig. 1 and 4, the light-transmissive layer 31 and the metal layer 32 are an integral structure.
In this embodiment, the transparent layer 31 may be made of a transparent material, such as silica glass, polymethyl methacrylate, resin, etc., the metal layer 32 is made of a metal, such as gold, copper, aluminum, etc., the metal layer 32 may be first plated on the transparent layer 31 and then the metal layer 32 is etched into a plurality of periodically arranged grid bars 321 by an etching process, so that the metal layer 32 and the transparent layer 31 are integrally formed, which is beneficial to saving the processing procedure of the polarizing layer 3, and simultaneously, the overall thickness and weight of the polarizing layer are reduced, the volume and quality of the whole display module are reduced, and the light and thin design of the display module is realized.
In an embodiment of the present application, as shown in fig. 1, the display module further includes a light-transmissive adhesive layer 4, and the light-transmissive adhesive layer 4 is disposed on a side of the display panel facing the second substrate 22 and is bonded to the second substrate 22.
In this embodiment, the transparent adhesive layer 4 is used for bonding the peep-proof film 2 and the display panel 1, the second substrate 22 of the peep-proof film 2 and the array substrate 12 of the display panel 1 are bonded to the upper and lower surfaces of the transparent adhesive layer 4 respectively, the material of the transparent adhesive layer 4 can be optical adhesive, the optical adhesive has high light transmittance, high adhesion, high weather resistance, water resistance, high temperature resistance, ultraviolet resistance, and no yellowing, peeling, and deterioration after long-term use, so that the transparent adhesive layer 4 can meet the requirements of connection and fixation between the peep-proof film 2 and the display panel 1 and light path transmission, and maintain the polarization state of polarized light incident into the display panel 1 from the peep-proof film 2, which is beneficial to improving the display quality of the display panel 1.
Example two:
the present application further provides a display device, as shown in fig. 6, the display device includes the display module and the backlight module 5 in the above embodiments, the display module is disposed on the light emitting side of the backlight module 5, and the polarizing layer 3 of the display module is located between the backlight module 5 and the peep-proof film 2 of the display module.
In this embodiment, the backlight module 5 is used for providing backlight to the display panel 1, the light emitted from the light emitting side of the backlight module 5 sequentially passes through the polarizing layer 3 and the peep-proof film 2 and then enters the display panel 1, the light emitted from the backlight module 5 can be polarized light, for example, a light source and a reflective brightness enhancement film are arranged in the backlight module 5, and the light emitted from the light source becomes polarized light when passing through the reflective brightness enhancement film. The specific structures of the polarizing layer 3, the peep-proof film 2 and the display panel 1 refer to the above embodiments, and since the display device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
In an embodiment of the present application, as shown in fig. 6, the backlight module 5 includes a light adjusting film 51, a light guide plate 52, a reflective sheet 53 and a light source 54, the light adjusting film 51 is located on one side of the polarizing layer 3 of the display module, the light guide plate 52 is located on one side of the light adjusting film 51 opposite to the polarizing layer 3, the reflective sheet 53 is located on one side of the light guide plate 52 opposite to the light adjusting film 51, and the light source 54 is located on one side of the light guide plate 52.
In the present embodiment, the backlight module 5 adopts a side-in type light-entering mode, and the light source 54 is disposed at one side of the light guide plate 52, which is beneficial to reducing the overall thickness of the backlight module 5 and realizing a thin design of the display device. The light modulation film 51, the light guide plate 52 and the reflection sheet 53 are at least arranged at intervals from bottom to top, so that light emitted from the light source 54 is diffused in the light guide plate 52, the light emitted from the lower side of the light guide plate 52 is reflected to the light guide plate 52 and the light modulation film 51 through the reflection sheet 53, and then is emitted to the display module through the light modulation film 51, thereby improving the brightness of the light emitted from the backlight module 5 and the display panel 1. The light adjusting film 51 may include a plurality of optical films, such as a diffusion film, a brightness enhancing film, and the like; the light source 54 may be an LED lamp panel, etc., and is not limited herein.
In an embodiment of the present application, as shown in fig. 5 and fig. 6, a plurality of first convex tooth structures 521 are disposed on a side of the light guide plate 52 facing the reflective sheet 53, and the plurality of first convex tooth structures 521 are sequentially connected along a first direction; a plurality of second protruding tooth structures 522 are disposed on a side of the light guide plate 52 facing away from the reflective sheet 53, and the second protruding tooth structures 522 are sequentially connected along a second direction, which is perpendicular to the first direction.
In this embodiment, the first teeth structures 521 and the second teeth structures 522 may be bar-shaped structures, the first teeth structures 521 may extend along the second direction, and the plurality of first teeth structures 521 are sequentially connected and uniformly distributed along the first direction. The second tooth structures 522 may extend along a first direction, and a plurality of the second tooth structures 522 are sequentially connected and uniformly distributed along a second direction. Wherein the first direction may be the Y-axis direction in fig. 5, and the second direction may be the X-axis direction in the figure. The plurality of first convex tooth structures 521 are arranged on the side, facing the reflector 53, of the light guide plate 52, the plurality of second convex tooth structures 522 are arranged on the side, facing away from the reflector 53, of the light guide plate 52, so that the extending direction of the first convex tooth structures 521 is perpendicular to the extending direction of the second convex tooth structures 522, the plurality of first convex teeth are continuously distributed along the first direction, the plurality of second convex teeth are continuously distributed along the second direction perpendicular to the first direction, light on the light guide plate 52 can be guided to the viewing direction of the display assembly from the edge direction of the light guide plate 52 through the plurality of first convex tooth structures 521 and the plurality of second convex tooth structures 522, and therefore light emitted by the backlight module 5 is collimated, light emitted into the display panel 1 by the backlight module 5 is collimated, the propagation loss of the light is reduced, and the display brightness of the display panel 1 is improved.
In an embodiment of the present application, as shown in fig. 6, a plurality of prism structures 511 are disposed on a side of the light modulation film 51 facing the light guide plate 52.
In this embodiment, the plurality of prism structures 511 may be sequentially and continuously disposed on the light modulation film 51, such that a side of the light modulation film 51 facing the light guide plate 52 is a prism surface formed by the plurality of prism structures 511, and the prism structures 511 may totally reflect light propagating in the light guide plate 52 to the display module, and simultaneously may narrow a light emitting angle of the light guide plate 52, so as to enhance the peep-proof effect and the display brightness of the display module.
The above description is only an alternative embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the technical solutions that can be directly or indirectly applied to other related fields without departing from the spirit of the present application are intended to be included in the scope of the present application.
Claims (10)
1. A display module, display module includes peep-proof membrane and display panel, peep-proof membrane includes first base plate and the second base plate of interval setting, and first base plate is equipped with first electrode layer, and the second base plate is equipped with the second electrode layer, it has polymer and nematic liquid crystal to fill between first electrode layer and the second electrode layer, its characterized in that:
the second substrate is arranged on the light inlet side of the display panel and is positioned between the display panel and the first substrate;
the display assembly further comprises a polarizing layer, wherein the polarizing layer is arranged on one side, back to the second substrate, of the first substrate and is used for forming polarized light incident to the peep-proof film and the display panel.
2. The display assembly of claim 1, wherein the polarizing layer comprises:
the light-transmitting layer is arranged on one side, back to the second substrate, of the first substrate; and
the metal layer comprises a plurality of grid bars, each grid bar is arranged on one side, back to the first substrate, of the light transmission layer, the grid bars are arranged at intervals along the length direction of the display panel, and a light transmission area is formed between any two adjacent grid bars.
3. The display assembly of claim 2, wherein the width of the grid bars along the length direction of the display panel is defined as w, and w is greater than or equal to 50nm and less than or equal to 150 nm;
and/or defining the height of the grid bars as h, wherein h is more than or equal to 100nm and less than or equal to 200 nm;
and/or defining the distance between any two adjacent grid bars as d, wherein d is more than or equal to 100nm and less than or equal to 200 nm.
4. The display assembly of claim 2, wherein the light transmissive layer and the metal layer are an integral structure.
5. The display assembly of claim 1, wherein the polarizing layer is a polarizer, and wherein the polarizer is bonded to the first substrate.
6. The display assembly according to any one of claims 1 to 5, further comprising a light-transmissive adhesive layer disposed on a side of the display panel facing the second substrate and bonded to the second substrate.
7. A display device, characterized in that the display device comprises:
the display assembly of any one of claims 1 to 6; and
the display assembly is arranged on the light emitting side of the backlight module, and the polarizing layer of the display assembly is positioned between the backlight module and the peep-proof film of the display assembly.
8. The display device as claimed in claim 7, wherein the backlight module comprises:
a light modulating film on one side of the polarizing layer of the display assembly;
the light guide plate is positioned on one side, back to the polarizing layer, of the light adjusting film sheet;
the reflector plate is positioned on one side of the light guide plate, which faces away from the dimming diaphragm; and
and the light source is positioned on one side of the light guide plate.
9. The display device according to claim 8, wherein a plurality of first convex tooth structures are arranged on a side of the light guide plate facing the reflective sheet, and the plurality of first convex tooth structures are sequentially connected along a first direction;
the light guide plate dorsad one side of reflector plate is equipped with a plurality of second dogtooth structures, and is a plurality of the second dogtooth structure connects gradually along the second direction and sets up, just the second direction with first direction is perpendicular.
10. The display device according to claim 8, wherein a side of the light modulation film facing the light guide plate is provided with a plurality of prism structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110561.3A CN113900299A (en) | 2021-09-22 | 2021-09-22 | Display module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110561.3A CN113900299A (en) | 2021-09-22 | 2021-09-22 | Display module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113900299A true CN113900299A (en) | 2022-01-07 |
Family
ID=79028824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111110561.3A Pending CN113900299A (en) | 2021-09-22 | 2021-09-22 | Display module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113900299A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327811A (en) * | 2022-08-31 | 2022-11-11 | 厦门天马微电子有限公司 | Display module and display device |
| CN115424538A (en) * | 2022-09-09 | 2022-12-02 | 惠科股份有限公司 | Display device and method for manufacturing the same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866084A (en) * | 2005-05-17 | 2006-11-22 | 日本电气株式会社 | Display device with switchable viewing angle, and terminal device |
| CN101363938A (en) * | 2008-09-26 | 2009-02-11 | 友达光电股份有限公司 | Light conducting plate, backlight module and LCD |
| CN101413641A (en) * | 2008-12-03 | 2009-04-22 | 友达光电股份有限公司 | Light guide plate and backlight module |
| US20110310085A1 (en) * | 2010-06-21 | 2011-12-22 | Nec Lcd Technologies, Ltd. | Image display device, electronic apparatuse using the same, display output control method for image display device, and output control program thereof |
| CN205176436U (en) * | 2015-10-30 | 2016-04-20 | 上海冠显光电科技有限公司 | Liquid crystal display module |
| CN105549236A (en) * | 2016-02-19 | 2016-05-04 | 京东方科技集团股份有限公司 | Switchable peep-proof device, preparation method thereof and display device |
| CN211123551U (en) * | 2019-12-03 | 2020-07-28 | 深圳菲尔泰光电有限公司 | Novel efficient peep-proof display module |
| CN112041737A (en) * | 2018-04-27 | 2020-12-04 | 日东电工株式会社 | Light adjusting film and liquid crystal display device |
-
2021
- 2021-09-22 CN CN202111110561.3A patent/CN113900299A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866084A (en) * | 2005-05-17 | 2006-11-22 | 日本电气株式会社 | Display device with switchable viewing angle, and terminal device |
| CN101363938A (en) * | 2008-09-26 | 2009-02-11 | 友达光电股份有限公司 | Light conducting plate, backlight module and LCD |
| CN101413641A (en) * | 2008-12-03 | 2009-04-22 | 友达光电股份有限公司 | Light guide plate and backlight module |
| US20110310085A1 (en) * | 2010-06-21 | 2011-12-22 | Nec Lcd Technologies, Ltd. | Image display device, electronic apparatuse using the same, display output control method for image display device, and output control program thereof |
| CN205176436U (en) * | 2015-10-30 | 2016-04-20 | 上海冠显光电科技有限公司 | Liquid crystal display module |
| CN105549236A (en) * | 2016-02-19 | 2016-05-04 | 京东方科技集团股份有限公司 | Switchable peep-proof device, preparation method thereof and display device |
| CN112041737A (en) * | 2018-04-27 | 2020-12-04 | 日东电工株式会社 | Light adjusting film and liquid crystal display device |
| CN211123551U (en) * | 2019-12-03 | 2020-07-28 | 深圳菲尔泰光电有限公司 | Novel efficient peep-proof display module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327811A (en) * | 2022-08-31 | 2022-11-11 | 厦门天马微电子有限公司 | Display module and display device |
| CN115424538A (en) * | 2022-09-09 | 2022-12-02 | 惠科股份有限公司 | Display device and method for manufacturing the same |
| CN115424538B (en) * | 2022-09-09 | 2024-04-09 | 惠科股份有限公司 | Display device and method for manufacturing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210325729A1 (en) | Backlight module and liquid crystal display device | |
| US20110273643A1 (en) | Liquid crystal display device | |
| US20110242839A1 (en) | Nvis compatible backlight device and lcd using the same | |
| KR20190064866A (en) | Display apparatus | |
| US20140111741A1 (en) | Liquid crystal display device | |
| KR100766623B1 (en) | Area light source device and liquid crystal display device including the same | |
| CN113900299A (en) | Display module and display device | |
| KR20100134372A (en) | Liquid crystal display apparatus and method of manufacturing the same | |
| CN106773298A (en) | Backlight module and liquid crystal display | |
| CN110412783B (en) | Light source module and display device thereof | |
| KR20090054722A (en) | Backlight unit and liquid cristal display device usimg the same | |
| KR20110076373A (en) | Light shaping film and liquid crystal display device including the same | |
| KR101392063B1 (en) | Polarized light guide plate with wire grid polarizer and liquid crystal display panel | |
| JPH10301109A (en) | Liquid crystal display device | |
| KR20120050171A (en) | Dual panel type liquid crystal display device | |
| CN113867038B (en) | Optical film, backlight assembly and display device | |
| CN113885244A (en) | Display module and display device | |
| CN114137763A (en) | Display screen assembly and display device | |
| KR102105542B1 (en) | Backlight unit and liquid crystal display device comprising the same | |
| CN115079467A (en) | Display device | |
| US11249368B2 (en) | Display panel and display device | |
| JPH11109344A (en) | Liquid crystal display device | |
| KR102135918B1 (en) | Liquid crystal display device having backlight unit to be able to control viewing angle | |
| CN217112962U (en) | Polaroid and liquid crystal display panel | |
| CN217112961U (en) | Liquid crystal display panel and liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220107 |
|
| RJ01 | Rejection of invention patent application after publication |