CN204405994U - With the display device of mirror function - Google Patents
With the display device of mirror function Download PDFInfo
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- CN204405994U CN204405994U CN201520045625.XU CN201520045625U CN204405994U CN 204405994 U CN204405994 U CN 204405994U CN 201520045625 U CN201520045625 U CN 201520045625U CN 204405994 U CN204405994 U CN 204405994U
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Abstract
The utility model proposes a kind of display device with mirror function, comprising: display panels, there is the polaroid being arranged on light emission side; There is the mirror panel of cholesteric liquid crystal characteristic, be arranged on the light emission side of display panels, wherein: described mirror panel allows to be transmitted through from the circularly polarized light of display panel, and a part for reflect ambient light simultaneously.Utilize the technical solution of the utility model, display device has Presentation Function and mirror function at synchronization simultaneously.
Description
Technical field
Embodiment of the present utility model relates to technical field of liquid crystal display, particularly relates to the display device of band mirror function.
Background technology
The display panel of liquid crystal display can have mirror function.But, existing display panel can only at mirror function, switch between Presentation Function and total perspective function.
Demand synchronization being met simultaneously to Presentation Function and the such display device of mirror function is also there is in market.
Utility model content
The display device that also can use as mirror while being clear that displaying contents to provide permission user, proposes the utility model.
According to exemplary embodiment of the present utility model, propose a kind of display device with mirror function, comprising: display panel, the emergent light of described display panel comprises circularly polarized light; Mirror panel, is arranged on the light emission side of described display panel, and described mirror panel allows to be transmitted through from the circularly polarized light of display panel, and a part for reflect ambient light simultaneously.
Alternatively, described mirror panel comprises: described mirror panel comprises: the first transparency carrier positioned opposite to each other and the second transparency carrier; Be separately positioned on the first transparency carrier and the transparent electrode layer on the relative inner surface of the second transparency carrier; Power supply and power control part, described power supply is electrically connected with two transparent electrode layers; Be arranged on the cholesteric crystal layer between the first transparency carrier and the second transparency carrier, wherein, described power control part is suitable for controlling power supply with output low frequency alternating voltage, based on the described voltage signal applied, described cholesteric crystal layer allows the circularly polarized light from display panel to be transmitted through, a part for reflect ambient light simultaneously.
Alternatively, described display panel is display panels, and comprises the polaroid being positioned at light emission side, and the first transparency carrier covers described polaroid.
Alternatively, display device also comprises 1/4 wavelength sheet of the light emission side being arranged on display panel.
Further alternatively, described power control part is also suitable for controlling power supply to export high-frequency ac voltage, based on the high-frequency ac voltage applied, described cholesteric crystal layer is that pitch gradient distribution is passed through to stop the light from display panel, reflect ambient light simultaneously.
Or further alternatively, described power control part is suitable for cutting off the electricity supply, thus described cholesteric crystal layer keeps pellucidity to pass through to allow the whole polarized light transmissions from display panel.
Alternatively, described mirror panel comprises: the 3rd transparency carrier positioned opposite to each other and the 4th transparency carrier; And the wide wave reflection high molecule liquid crystal layer between the inner surface being arranged on the 3rd transparency carrier and the 4th transparency carrier, described display device also comprises the 1/4 wavelength sheet being arranged on light emission side, described wide wave reflection high molecule liquid crystal layer allows to be transmitted through from the circularly polarized light of display panel, and a part for reflect ambient light simultaneously.
Further alternatively, described display panel is display panels and comprises the polaroid being positioned at light emission side, and 1/4 wavelength sheet covers described polaroid, and the angle of the optical axis through axle and 1/4 wavelength sheet of described polaroid is 45 degree.
Further alternatively, described wide wave height molecular liquid crystal is that distortion Grain-Boundary Phase and cholesteric phase coexist the form of film.
Utilize the technical solution of the utility model, display device synchronization have simultaneously Presentation Function (namely based on transmitted through circularly polarized light can see the displaying contents of display panel) and mirror function (namely such as can see the reflection image of user oneself based on a part of surround lighting of reflection).
Accompanying drawing explanation
Fig. 1 is the schematic sectional view of display with the structure of the display device of mirror function of an exemplary embodiment of the present utility model.
Fig. 2 is the schematic sectional view of display with the structure of the display device of mirror function of another exemplary embodiment of the present utility model.
Fig. 3 is added with the liquid crystal texture schematic diagram of the negative liquid crystal of chiral ionic liquid when being and not applying voltage, Fig. 3 shows perspective.
Fig. 4 be applied with high-frequency ac power after the schematic diagram being added with the liquid crystal planer texture of the negative liquid crystal of chiral ionic liquid, Fig. 4 shows mirror-reflection state.
Embodiment
Below in conjunction with accompanying drawing, the display device with mirror function that the utility model embodiment provides is described in detail.
In accompanying drawing, the size and shape of each parts does not reflect the actual proportions of the display device with mirror function, and object just signal illustrates content of the present utility model.
Cholesteric liquid crystal is the same with other the material of liquid crystalline state, the mobility of existing liquid, deformation behavior, viscosity, has again the photoanisotropy of crystal, is a kind of excellent nonlinear optical material.The molecular structure special due to cholesteric liquid crystal and optical anisotropy, determine optical activity, the character such as polarized light dichromatism and the distinctive selective scattering of itself that it has crystal.The impact of pitch on its optical property of cholesteric liquid crystal is extremely important, and the characteristic of Transmission light and selective scattering determines primarily of its pitch.Such as, for the dextrorotation cholesteric liquid crystal that pitch is close with lambda1-wavelength, if when left-handed rotation is incident, then produce Transmission light; If when right-handed rotation is incident, then produces and reflect identical light scattering with Bragg.
Based on cholesteric liquid crystal characteristic, the utility model is proposed.
As shown in Figure 1-2, the utility model proposes a kind of display device with mirror function, comprising:
There is the display panels 10 of cholesteric liquid crystal characteristic, there is the polaroid 11 being arranged on light emission side;
Mirror panel 20/30, is arranged on the light emission side of display panels 10,
Wherein:
Described mirror panel 20/30 allows a part for the polarized light from display panel 10 to be transmitted through, and a part for simultaneously reflect ambient light.
It is pointed out that the display panel in the utility model is not limited to display panels.
Utilize the technical solution of the utility model, mirror panel, based on cholesteric liquid crystal characteristic, can only allow a part for the polarized light from display panel 10 to be transmitted through, and a part for simultaneously reflect ambient light.So, make display device synchronization have simultaneously Presentation Function (namely based on transmitted through circularly polarized light can see the displaying contents of display panel) and mirror function (namely such as can see the reflection image of user oneself based on a part of surround lighting of reflection).
Referring to Fig. 1, the display device according to the band mirror function of an embodiment of the present utility model is described.
As shown in Figure 1, this display panels 10 such as comprises: lower board 11, and the thin film transistor (TFT) (TFT) of transparency electrode 19 is formed in lower board 11; The upper board 12 be oppositely arranged with lower board 11, the downside of upper board is also provided with color film 13; Be placed in the liquid crystal layer 18 between lower board 11 and upper board 12; Be placed in the upper polaroid 14 of the upside of upper board 11; Be placed in the lower polaroid 15 on the downside of lower board 11 and backlight 16.
As shown in Figure 1, this mirror panel 20 comprises:
First transparency carrier 21 positioned opposite to each other and the second transparency carrier 22, first transparency carrier 21 cover upper polaroid 14;
Be separately positioned on the first transparency carrier 21 and the transparent electrode layer 23 on the relative inner surface of the second transparency carrier 22;
Power supply 24 (see Fig. 4) and power control part (not shown), described power supply is electrically connected with two transparent electrode layers;
Be arranged on the cholesteric crystal layer 25 between the first transparency carrier 21 and the second transparency carrier 22, more specifically, this cholesteric crystal layer is made up of negative liquid crystal 252 and the chiral ionic liquid 251 be added in negative liquid crystal 252,
Wherein, described power control part is suitable for controlling power supply 24 output low frequency alternating voltage, and based on the low-frequency ac voltage applied, described mirror panel 10 allows the circularly polarized light from display panel to be transmitted through, a part for reflect ambient light simultaneously.
Utilizing this technical scheme, by controlling display panels 10 and mirror panel 20, good display effect and mirror effect can be provided simultaneously.
In the example of fig. 1,1/4 wavelength sheet can be set in the light emission side of display panel, also can not arrange, can more transmitted through mirror panel from the light of display panel when 1/4 wavelength sheet is just set.
The low-frequency ac voltage of the function of any realization " mirror panel 10 allows the circularly polarized light from display panel to be transmitted through, a part for reflect ambient light simultaneously " can be used.Such as, this low-frequency ac voltage can be the low-frequency ac voltage of 100-200 hertz.
Described power control part is also suitable for controlling power supply 24 and exports high-frequency ac voltage, the such as high-frequency ac voltage of more than 8000 hertz, based on the high-frequency ac voltage applied, mirror panel 20 stops the ght transmission from display panel 10 to pass through, simultaneously reflect ambient light.The transparent electrode layer 23 of mirror panel 20 has been applied in the situation of high-frequency ac voltage.In the diagram, negative liquid crystal 252 is planar texture, and the distribution due to chiral ionic liquid 251 concentrates on electrode side, occurs the pitch ladder distribution of negative liquid crystal 252, and demonstrates mirror-reflection state.In this case, mirror panel 20 only provides mirror function, and user can't see the content from display panel 10 completely.
Alternatively, described power control part is also suitable for cutting off the electricity supply, thus mirror panel 20 keeps pellucidity to pass through to allow the whole polarized light transmissions from display panel.The state of the negative liquid crystal 252 after cutting off the electricity supply is shown in Fig. 3, has now shown complete transmissive state.In the case, user can select the displaying contents watching display panel, and mirror panel 20 does not provide mirror function.
Visible, utilize the mirror panel 20 shown in Fig. 1 of the present utility model, not only can realize that mirror panel 10 allows a part for the polarized light from display panel to be transmitted through, a part for simultaneously reflect ambient light " (namely meeting Presentation Function and mirror function) simultaneously, and can realize the displaying contents only watching display panel complete perspective function and only as the complete mirror function of mirror.
The display device of the band mirror function according to another embodiment of the present utility model is described referring to Fig. 2.As shown in Figure 2, the structure of display panel 10 is identical with the structure of the display panel 10 in Fig. 1, and mirror panel 30 comprises: the 3rd transparency carrier 31 positioned opposite to each other and the 4th transparency carrier 32; And the wide wave reflection high molecule liquid crystal layer 33 between the inner surface being arranged on the 3rd transparency carrier 31 and the 4th transparency carrier 32, described wide wave reflection high molecule liquid crystal layer has the characteristic of cholesteric crystal layer, namely wide wave reflection high molecule liquid crystal layer allows to be transmitted through from the circularly polarized light of display panel, and a part for reflect ambient light simultaneously.
As shown in Figure 2, display device also comprises the upper polaroid 14 of 1/4 wavelength sheet 34,1/4 wavelength sheet covering in the outside covering the 3rd transparency carrier 31.When display panel is not display panels, can not arrange polaroid, then 1/4 wavelength sheet 34 can be set directly at the light emission side of display panel.
1/4 wavelength sheet 34 also can be an ingredient of mirror panel 30.
Wide wave reflection high molecule liquid crystal has the reflected wavelength range of non-constant width, and it has the characteristic of cholesteric liquid crystal, therefore only has light with the different hand of spiral of cholesteric liquid crystal just by wide wave reflection high molecule liquid crystal (its reflectivity be roughly 50%, transmissivity be roughly 50%).Therefore wide wave reflection high molecule liquid crystal is with polarizability.Wide wave reflection high molecule liquid crystal layer is by the nematic liquid crystal with left-handed chiral ionic liquid, polymerisable monomer and initiating agent and the wide wave reflection liquid crystal layer formed.Wide wave reflection high molecule liquid crystal is after the monomer by being joined by light trigger with photopolymerizable group liquid crystal liquid crystal, UV-irradiation is carried out more than higher than the cholesteric phase of liquid crystal and smectic C transition temperature within 10 degree, photopolymerizable group liquid crystal liquid crystal property monomer spreads towards the side of ultraviolet source with the carrying out of polymerization, cause raising away from the cholesteric phase of the side of ultraviolet source and smectic C transition temperature, after obtain distortion crystalline substance and to be situated between mutually and cholesteric phase coexists film, thus obtain the high molecule liquid crystal of wide wave reflection characteristics.
Utilize wide wave reflection high molecule liquid crystal layer not need cholesteric phase thus do not need to apply voltage, wide wave reflection high molecule liquid crystal layer can keep the mirror effect of about 50%.
Such as, the left-handed rotation in the extraneous light come on the upside of wide wave reflection high molecule liquid crystal layer is reflected, and therefore can realize mirror effect.When display image (on state of), from upper POL light out by becoming dextrorotation rotatory polarization after 1/4 wavelength sheet 34, therefore can show image by wide wave reflection liquid crystal layer.
In order to improve optical efficiency, the angle of the optical axis through axle and 1/4 wavelength sheet 34 of upper polaroid 14 is+45 degree.
The manufacturing process of the display device of fabricated ribbon mirror function is described below, and this technique comprises step:
There is provided display panel 10, described display panel 10 emergent light comprises circularly polarized light;
Mirror panel 20/30 is provided; With
Described mirror panel is arranged on the light emission side of display panel, described mirror panel allows to be transmitted through from the circularly polarized light of display panel 10, and a part for reflect ambient light simultaneously.
Alternatively, in above-mentioned technique, the step of mirror panel 20 is provided to comprise: to provide the first transparency carrier 21 and the second transparency carrier 22 positioned opposite to each other, the first transparency carrier 21 with the relative inner surface of the second transparency carrier 22 are provided with transparent electrode layer 23; Between the first transparency carrier 21 and the second transparency carrier 22, apply negative liquid crystal 252, in negative liquid crystal 252, be added with chiral ionic liquid 251; There is provided power supply 24 and power control part, described power supply is electrically connected with two transparent electrode layers; With utilize power control part to control power supply output low frequency alternating voltage, based on the low-frequency ac voltage applied, make described mirror panel allow the circularly polarized light from display panel to be transmitted through, the part of reflect ambient light simultaneously.
So, a kind of mirror panel based on cholesteric crystal layer is provided.
Alternatively, in above-mentioned technique, the step of mirror panel 30 is provided to comprise: to provide the 3rd transparency carrier 31 positioned opposite to each other and the 4th transparency carrier 32; Between the 3rd transparency carrier and the inner surface of the 4th transparency carrier, provide wide wave reflection high molecule liquid crystal layer 33, described wide wave reflection high molecule liquid crystal layer has the characteristic of cholesteric crystal layer; And 1/4 wavelength sheet is set between the light emission side and mirror panel of display panel.So, the wide wave reflection high molecule liquid crystal layer with cholesteric crystal layer characteristic is provided, and good display effect and the display device of mirror effect are provided simultaneously.
Further, the step of wide wave reflection high molecule liquid crystal layer 33 is provided to comprise: light trigger to be joined photopolymerizable group liquid crystal liquid crystal property monomer; And carry out UV-irradiation within 10 degree more than higher than the negativity cholesteric phase of liquid crystal and smectic C transition temperature, obtain wide wave reflection high molecule liquid crystal layer.This photopolymerizable group liquid crystal liquid crystal property monomer along with polymerization carrying out spread towards the side of ultraviolet source, make to raise away from the side cholesteric phase of ultraviolet source and smectic C transition temperature, to coexist film to obtain distortion Grain-Boundary Phase and cholesteric phase, thus obtain wide wave reflection high molecule liquid crystal layer.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (9)
1. the display device with mirror function, comprising:
Display panel, the emergent light of described display panel comprises circularly polarized light;
It is characterized in that, described display device also comprises:
Mirror panel, is arranged on the light emission side of described display panel, and described mirror panel allows to be transmitted through from the circularly polarized light of display panel, and a part for reflect ambient light simultaneously.
2. display device according to claim 1, is characterized in that:
Described mirror panel comprises:
First transparency carrier positioned opposite to each other and the second transparency carrier;
Be separately positioned on the first transparency carrier and the transparent electrode layer on the relative inner surface of the second transparency carrier;
Power supply and power control part, described power supply is electrically connected with two transparent electrode layers;
Be arranged on the cholesteric crystal layer between the first transparency carrier and the second transparency carrier,
Wherein, described power control part is suitable for controlling power supply with output low frequency alternating voltage, and based on the described voltage signal applied, described cholesteric crystal layer allows the circularly polarized light from display panel to be transmitted through, a part for reflect ambient light simultaneously.
3. display device according to claim 2, is characterized in that:
Described display panel is display panels, and comprises the polaroid being positioned at light emission side, and the first transparency carrier covers described polaroid.
4. the display device according to Claims 2 or 3, is characterized in that, also comprises:
Be arranged on 1/4 wavelength sheet of the light emission side of display panel.
5. display device according to claim 2, is characterized in that:
Described power control part is also suitable for controlling power supply to export high-frequency ac voltage, and based on the high-frequency ac voltage applied, described cholesteric crystal layer is that pitch gradient distribution is passed through to stop the light from display panel, reflect ambient light simultaneously.
6. display device according to claim 2, is characterized in that:
Described power control part is also suitable for cutting off the electricity supply, thus described cholesteric crystal layer keeps pellucidity to pass through to allow the whole polarized light transmissions from display panel.
7. display device according to claim 1, is characterized in that:
Described mirror panel comprises: the 3rd transparency carrier positioned opposite to each other and the 4th transparency carrier; With
Wide wave reflection high molecule liquid crystal layer between the inner surface being arranged on the 3rd transparency carrier and the 4th transparency carrier,
Described wide wave reflection high molecule liquid crystal layer allows to be transmitted through from the circularly polarized light of display panel, and a part for reflect ambient light simultaneously.
8. display device according to claim 7, is characterized in that:
Described display panel is display panels and comprises the polaroid being positioned at light emission side, and 1/4 wavelength sheet covers described polaroid, and the angle of the optical axis through axle and 1/4 wavelength sheet of described polaroid is+45 degree.
9. display device according to claim 7, is characterized in that:
Described wide wave height molecular liquid crystal is that distortion Grain-Boundary Phase and cholesteric phase coexist the form of film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520045625.XU CN204405994U (en) | 2015-01-22 | 2015-01-22 | With the display device of mirror function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520045625.XU CN204405994U (en) | 2015-01-22 | 2015-01-22 | With the display device of mirror function |
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| Publication Number | Publication Date |
|---|---|
| CN204405994U true CN204405994U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520045625.XU Withdrawn - After Issue CN204405994U (en) | 2015-01-22 | 2015-01-22 | With the display device of mirror function |
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| CN (1) | CN204405994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570463A (en) * | 2015-01-22 | 2015-04-29 | 京东方科技集团股份有限公司 | Display device with mirror function and manufacturing method thereof |
| CN108983481A (en) * | 2017-05-30 | 2018-12-11 | 株式会社村上开明堂 | Mirror display device |
-
2015
- 2015-01-22 CN CN201520045625.XU patent/CN204405994U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570463A (en) * | 2015-01-22 | 2015-04-29 | 京东方科技集团股份有限公司 | Display device with mirror function and manufacturing method thereof |
| WO2016115791A1 (en) * | 2015-01-22 | 2016-07-28 | 京东方科技集团股份有限公司 | Display apparatus with mirror function and manufacturing method therefor |
| CN108983481A (en) * | 2017-05-30 | 2018-12-11 | 株式会社村上开明堂 | Mirror display device |
| CN108983481B (en) * | 2017-05-30 | 2022-06-17 | 株式会社村上开明堂 | Mirror display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150617 Effective date of abandoning: 20171208 |