CN107300802B - Mirror display device - Google Patents
Mirror display device Download PDFInfo
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- CN107300802B CN107300802B CN201710648510.3A CN201710648510A CN107300802B CN 107300802 B CN107300802 B CN 107300802B CN 201710648510 A CN201710648510 A CN 201710648510A CN 107300802 B CN107300802 B CN 107300802B
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- liquid crystal
- display panel
- crystal display
- backlight module
- display device
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 56
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000011521 glass Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052740 iodine Inorganic materials 0.000 claims description 3
- 239000011630 iodine Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 230000010287 polarization Effects 0.000 abstract description 5
- 238000002310 reflectometry Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004088 simulation 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- 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
- G02F1/133548—Wire-grid polarisers
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
The invention provides a mirror display device. The mirror display device includes: the backlight module comprises a backlight module, a liquid crystal display panel arranged on the backlight module, a polarizer arranged on one side of the liquid crystal display panel close to the backlight module, and an analyzer arranged on one side of the liquid crystal display panel far away from the backlight module; the analyzer is a sub-wavelength metal film polarizer, and the analyzer comprises: locate substrate base plate on the liquid crystal display panel and form in substrate base plate keeps away from metal grating on one side of liquid crystal display panel both can reach the polarization detection effect through adopting sub-wavelength metal film polaroid as the analyzer, but also the reflection ambient light realizes the mirror surface effect, will simultaneously metal grating locates substrate base plate keeps away from one side of liquid crystal display panel can promote the reflectivity of sub-wavelength metal film polaroid, improves the mirror surface quality.
Description
Technical Field
The invention relates to the technical field of display, in particular to a mirror display device.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Displays (LCDs) have advantages of high image quality, power saving, thin body, and wide application range, and thus are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and become the mainstream of Display devices.
Most of the conventional lcd devices are transmissive lcd devices, which include an lcd panel and a Backlight Module (Backlight Module). The liquid crystal display panel has the working principle that liquid crystal molecules are placed in two parallel glass substrates, a plurality of vertical and horizontal fine wires are arranged between the two glass substrates, the liquid crystal molecules are controlled to change directions by electrifying or not, and light rays of the backlight module pass through the liquid crystal display panel and are refracted out to generate pictures.
The transmissive liquid crystal display device generally has a simple display function, however, with the continuous progress of display technology, various new display devices have been invented, and various manufacturers have more actively developed multifunctional display devices, and the multifunctional display device has become one of the targets that consumers pursue, and typical multifunctional display devices such as touch display devices and mirror display devices.
The mirror display device is a new type of display device that can display an image and also reflect a picture to be used as a mirror. In a mirror display device, generally, to achieve a mirror effect, a reflective layer is usually disposed on a display panel, and the reflective layer can emit both ambient light and part of light emitted from the display panel, so as to achieve both a mirror effect and a display effect. However, in general, the transmittance of the reflective sheet is limited, and the display effect is greatly reduced due to the interference of ambient light; in addition, the additional arrangement of one reflective sheet not only increases the thickness of the display, but also affects the reliability of the product.
A subwavelength metal thin film polarizer (NWGP) is a periodic alternating structure of strip-shaped metal and air or medium, in which the metal has a large imaginary refractive index, which can transmit TM polarized light component (polarization direction perpendicular to the Wire grid direction, i.e. P light) and reflect TE polarized light component (polarization direction parallel to the Wire grid direction, i.e. S light).
Disclosure of Invention
The invention aims to provide a mirror display device, which can realize a mirror effect on the premise of not increasing the thickness of the display device and ensure the quality of a mirror.
To achieve the above object, the present invention provides a mirror display device including: the backlight module comprises a backlight module, a liquid crystal display panel arranged on the backlight module, a polarizer arranged on one side of the liquid crystal display panel close to the backlight module, and an analyzer arranged on one side of the liquid crystal display panel far away from the backlight module;
the analyzer is a sub-wavelength metal film polarizer, and the analyzer comprises: the liquid crystal display panel comprises a substrate base plate arranged on the liquid crystal display panel and a metal wire grid formed on one side of the substrate base plate far away from the liquid crystal display panel.
The polarizing axis of the polarizer is vertical to the polarizing axis of the analyzer.
The polarizer is an iodine polarizer or a dye polarizer.
The substrate base plate is a transparent glass base plate.
The metal wire grid includes: the metal strips are arranged in parallel, and a slit is formed between every two adjacent metal strips.
The material of the metal wire grid is aluminum, silver, gold and copper.
The thickness of the metal strip is 100-300 nm, the width of the metal strip is 20-100 nm, and the width of the slit is 20-100 nm.
The mirror display device also comprises an outer frame, wherein the backlight module, the liquid crystal display panel, the polarizer and the analyzer are all arranged in the outer frame.
The outer frame is also provided with an infrared detector which is electrically connected with the backlight module and the liquid crystal display panel;
the infrared detector is used for detecting the distance between a user and the mirror display device and controlling the backlight module and the liquid crystal display panel to be closed when the distance between the user and the mirror display device is smaller than a preset distance threshold value.
The metal wire grid is manufactured by adopting a nano-imprinting process.
The invention has the beneficial effects that: the present invention provides a mirror display device, including: the backlight module comprises a backlight module, a liquid crystal display panel arranged on the backlight module, a polarizer arranged on one side of the liquid crystal display panel close to the backlight module, and an analyzer arranged on one side of the liquid crystal display panel far away from the backlight module; the analyzer is a sub-wavelength metal film polarizer, and the analyzer comprises: locate substrate base plate on the liquid crystal display panel and form in substrate base plate keeps away from metal grating on one side of liquid crystal display panel both can reach the polarization detection effect through adopting sub-wavelength metal film polaroid as the analyzer, but also the reflection ambient light realizes the mirror surface effect, will simultaneously metal grating locates substrate base plate keeps away from one side of liquid crystal display panel can promote the reflectivity of sub-wavelength metal film polaroid, improves the mirror surface quality.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a structural diagram of a mirror display device according to the present invention;
FIG. 2 is a TE light reflectivity comparison graph of a sub-wavelength metal thin film polarizer under different conditions.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1, the present invention provides a mirror display device, including: the backlight module comprises a backlight module 1, a liquid crystal display panel 2 arranged on the backlight module 1, a polarizer 3 arranged on one side of the liquid crystal display panel 2 close to the backlight module 1, and an analyzer 4 arranged on one side of the liquid crystal display panel 2 far away from the backlight module 1;
wherein, analyzer 4 is sub-wavelength metal film polaroid, analyzer 4 includes: a substrate 41 provided on the liquid crystal display panel 2, and a metal wire grid 42 formed on a side of the substrate 41 remote from the liquid crystal display panel 2.
Specifically, the polarizing axis of the polarizer 3 is perpendicular to the polarizing axis of the analyzer 4. Preferably, the polarizer 3 is an iodine-based polarizer or a dye-based polarizer.
Preferably, the base substrate 41 is a transparent glass substrate.
Specifically, the metal wire grid 42 includes: a plurality of metal strips 421 arranged in parallel, and a slit 422 is formed between two adjacent metal strips 421.
Wherein, the material of the metal wire grid 42 can be selected from aluminum, silver, gold, and copper, and aluminum is preferred; the thickness of the metal strip 421 is 100-300 nm, the width of the metal strip 421 is 20-100 nm, the width of the slit 422 is 20-100 nm, further, the thickness of the metal strip 421 is preferably 200nm, the width of the metal strip 421 is preferably 50nm, and the width of the slit 422 is preferably 50 nm.
Further, in order to improve the mirror control effect of the mirror display device, the mirror display device further comprises an outer frame 5, the backlight module 1, the liquid crystal display panel 2, the polarizer 3 and the analyzer 4 are all arranged in the outer frame 5, the outer frame 5 is further provided with an infrared detector 6, and the infrared detector 6 is electrically connected with the backlight module 1 and the liquid crystal display panel 2.
Specifically, the infrared detector 6 detects the distance between the user and the mirror display device when the liquid crystal display panel 2 and the backlight module 1 are in the on state, when the distance between the user and the mirror display device is smaller than a preset distance threshold value, the backlight module 1 and the liquid crystal display panel 2 are controlled to be closed, when the distance between the user and the mirror display device is greater than or equal to a preset distance threshold value, the backlight module 1 and the liquid crystal display panel 2 are controlled to be kept in an open state or be opened again, for example, when someone approaches the mirror display device, the infrared detector 6 controls the backlight module 1 and the liquid crystal display panel 2 to be turned off, the mirror display device is used as a mirror, when the person leaves, the infrared detector 6 controls the backlight module 1 and the liquid crystal display panel 2 to be turned on again, and the mirror display device displays the picture again.
Preferably, the metal wire grid 42 is fabricated using a nanoimprint process.
It should be noted that, as shown in fig. 2, the finite time domain difference method of the present invention simulates the change law of the transmittance and reflectance of the sub-wavelength metal thin film polarizer 4 to the incident light when the light is incident from the substrate 41 side of the sub-wavelength metal thin film polarizer 4 and the light is incident from the metal wire grid 42 side of the sub-wavelength metal thin film polarizer 4, specifically, the incident light source is a plane wave, the wavelength range of the incident light source is 380 to 780nm, in fig. 2, the a curve is the reflectance curve of the TE light when the light is incident from the metal wire grid 42 side, the b curve is the reflectance curve of the TE light when the light is incident from the substrate 41 side, and it can be found through simulation that the reflectance of the light incident from the metal 42 side is increased by about 6% compared with the reflectance of the TE light incident from the substrate 41 side, therefore, the metal wire grid 42 is disposed on the side of the substrate 41 away from the liquid crystal display panel, and compared with the metal wire grid 42 disposed on the side of the substrate 41 close to the liquid crystal display panel, the reflectivity of the metal wire grid can be improved, and the mirror effect can be increased.
In summary, the present invention provides a mirror display device, including: the backlight module comprises a backlight module, a liquid crystal display panel arranged on the backlight module, a polarizer arranged on one side of the liquid crystal display panel close to the backlight module, and an analyzer arranged on one side of the liquid crystal display panel far away from the backlight module; the analyzer is a sub-wavelength metal film polarizer, and the analyzer comprises: locate substrate base plate on the liquid crystal display panel and form in substrate base plate keeps away from metal grating on one side of liquid crystal display panel both can reach the polarization detection effect through adopting sub-wavelength metal film polaroid as the analyzer, but also the reflection ambient light realizes the mirror surface effect, will simultaneously metal grating locates substrate base plate keeps away from one side of liquid crystal display panel can promote the reflectivity of sub-wavelength metal film polaroid, improves the mirror surface quality.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (6)
1. A mirror display device, comprising: the backlight module comprises a backlight module (1), a liquid crystal display panel (2) arranged on the backlight module (1), a polarizer (3) arranged on one side, close to the backlight module (1), of the liquid crystal display panel (2), and an analyzer (4) arranged on one side, far away from the backlight module (1), of the liquid crystal display panel (2);
the analyzer (4) is a sub-wavelength metal film polarizer, and the analyzer (4) comprises: a substrate (41) provided on the liquid crystal display panel (2), and a metal wire grid (42) formed on a side of the substrate (41) away from the liquid crystal display panel (2);
the backlight module comprises a backlight module (1), a liquid crystal display panel (2), a polarizer (3) and an analyzer (4), and is characterized by further comprising an outer frame (5), wherein the backlight module, the liquid crystal display panel, the polarizer (3) and the analyzer (4) are all arranged in the outer frame (5);
the outer frame (5) is also provided with an infrared detector (6), and the infrared detector (6) is electrically connected with the backlight module (1) and the liquid crystal display panel (2);
the infrared detector (6) is used for detecting the distance between a user and the mirror display device and controlling the backlight module (1) and the liquid crystal display panel (2) to be closed when the distance between the user and the mirror display device is smaller than a preset distance threshold value;
the metal wire grid (42) includes: a plurality of metal strips (421) arranged in parallel, wherein a slit (422) is formed between two adjacent metal strips (421);
the thickness of the metal strip (421) is 100-300 nm, the width of the metal strip (421) is 20-100 nm, and the width of the slit (422) is 20-100 nm.
2. A mirror display device according to claim 1, wherein the polarizing axis of said polarizer (3) is perpendicular to the polarizing axis of said analyzer (4).
3. A mirror display device according to claim 1, wherein said polarizer (3) is an iodine-based polarizer or a dye-based polarizer.
4. A mirror display device according to claim 1, wherein the substrate base plate (41) is a transparent glass base plate.
5. A mirror display device according to claim 1, wherein the material of said metal wire grid (42) is aluminum, silver, gold, or copper.
6. A mirror display device according to claim 1, wherein said wire grid (42) is made using a nanoimprint process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710648510.3A CN107300802B (en) | 2017-08-01 | 2017-08-01 | Mirror display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710648510.3A CN107300802B (en) | 2017-08-01 | 2017-08-01 | Mirror display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107300802A CN107300802A (en) | 2017-10-27 |
| CN107300802B true CN107300802B (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710648510.3A Active CN107300802B (en) | 2017-08-01 | 2017-08-01 | Mirror display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107300802B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803124B (en) * | 2018-06-27 | 2021-05-28 | 武汉华星光电技术有限公司 | Curved liquid crystal display screen and manufacturing method thereof |
Citations (5)
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|---|---|---|---|---|
| CN101290371A (en) * | 2008-05-30 | 2008-10-22 | 苏州大学 | Sub-wavelength grate structure polarizing film and its manufacture method |
| CN101377555A (en) * | 2008-09-26 | 2009-03-04 | 苏州大学 | Sub-wave length embedded type grating structure polarizing sheet and manufacturing method thereof |
| CN201689648U (en) * | 2010-04-01 | 2010-12-29 | 上海纽银实业有限公司 | Mirror display system |
| CN103072420A (en) * | 2011-10-26 | 2013-05-01 | 安徽新境传媒股份有限公司 | Mirror animation fresco machine |
| CN104919364A (en) * | 2013-01-16 | 2015-09-16 | 夏普株式会社 | Mirror display, half mirror plate, and electronic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003253709A1 (en) * | 2002-03-18 | 2003-09-29 | Koninklijke Philips Electronics N.V. | Mirror with built-in display |
| US8099247B2 (en) * | 2005-11-23 | 2012-01-17 | Electric Mirror, Llc | Back lit mirror with media display device |
| CN101405645B (en) * | 2006-05-31 | 2011-04-06 | 夏普株式会社 | Display system |
-
2017
- 2017-08-01 CN CN201710648510.3A patent/CN107300802B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290371A (en) * | 2008-05-30 | 2008-10-22 | 苏州大学 | Sub-wavelength grate structure polarizing film and its manufacture method |
| CN101377555A (en) * | 2008-09-26 | 2009-03-04 | 苏州大学 | Sub-wave length embedded type grating structure polarizing sheet and manufacturing method thereof |
| CN201689648U (en) * | 2010-04-01 | 2010-12-29 | 上海纽银实业有限公司 | Mirror display system |
| CN103072420A (en) * | 2011-10-26 | 2013-05-01 | 安徽新境传媒股份有限公司 | Mirror animation fresco machine |
| CN104919364A (en) * | 2013-01-16 | 2015-09-16 | 夏普株式会社 | Mirror display, half mirror plate, and electronic device |
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| Publication number | Publication date |
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| CN107300802A (en) | 2017-10-27 |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |