CN104516044A - Polarizer sheet and display device - Google Patents
Polarizer sheet and display device Download PDFInfo
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- CN104516044A CN104516044A CN201510014699.1A CN201510014699A CN104516044A CN 104516044 A CN104516044 A CN 104516044A CN 201510014699 A CN201510014699 A CN 201510014699A CN 104516044 A CN104516044 A CN 104516044A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 125
- 239000000463 material Substances 0.000 claims description 21
- 239000012790 adhesive layer Substances 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002105 nanoparticle Substances 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- OOLUVSIJOMLOCB-UHFFFAOYSA-N 1633-22-3 Chemical compound C1CC(C=C2)=CC=C2CCC2=CC=C1C=C2 OOLUVSIJOMLOCB-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000003287 optical effect Effects 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
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- 229920000642 polymer Polymers 0.000 description 2
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 2
- CPHGOBGXZQKCKI-UHFFFAOYSA-N 4,5-diphenyl-1h-imidazole Chemical compound N1C=NC(C=2C=CC=CC=2)=C1C1=CC=CC=C1 CPHGOBGXZQKCKI-UHFFFAOYSA-N 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The invention provides a polarizer sheet and a display device, belongs to the technical field of display, and can solve the problems of low yield and complex process caused by attachment of an existing optical grating layer to the emergent surface side of a display panel. The polarizer sheet comprises a polarizer sheet original film layer, and an optical grating layer arranged on the emergent surface side of the polarizer sheet original film layer, wherein a plurality of shading regions and light transmission regions are alternatively arranged on the optical grating layer; photochromic layers used for shading light during irradiation are arranged in the shading regions; light transmission layers are arranged in the light transmission regions. The polarizer sheet is applied to the display device and can realize 2D and 3D image switching display.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a polarizer and a display device.
Background
At present, commonly used displays adopt two-dimensional display, and the two-dimensional display cannot visually express depth information of a scene. With the development of computer information technology and display technology, three-dimensional display technology has become a research focus in the display field, and because the three-dimensional spatial information of a scene can be completely reproduced, a viewer can see a three-dimensional stereoscopic image which floats out of a screen, extends to the depth and is suspended in the air.
The autostereoscopic display technology is a display technology in which a stereoscopic effect can be observed with naked eyes of a viewer without wearing any auxiliary viewing tool. Among the stereoscopic display technologies, the grating autostereoscopic display technology is widely applied due to the characteristics of simple structure, easy realization, good stereoscopic display effect and the like. The grating mainly comprises a lens grating and a slit grating, wherein the slit grating is composed of a transparent grating film with a slit array with alternate light and shade; lenticular lenses are made up of transparent lenses having an array of cylindrical surfaces. The slit grating has the advantages of simple structure, low manufacturing cost, easy change of grating parameters, no focusing problem and the like, so the slit grating is often applied to a three-dimensional display device.
The inventor finds that at least the following problems exist in the prior art: in the existing stereoscopic display device, no matter the slit grating or the lenticular grating is adopted, the grating structure needs to be attached to the light emergent surface side of the display device, and the preparation process and the production cost are increased to a certain extent due to the addition of the attaching process; meanwhile, the precision of the attaching process is limited to a certain extent, so that the rate of poor attaching is high.
Disclosure of Invention
The technical problem to be solved by the present invention includes providing a polarizer and a display device with a simple structure and 3D display function, aiming at the above problems existing in the application of the existing grating to the display panel.
The technical scheme adopted for solving the technical problem is that the polaroid comprises a polaroid original membrane layer and a grating layer arranged on the light emergent surface side of the polaroid original membrane layer, wherein the grating layer is provided with a plurality of shading areas and light transmitting areas which are alternately arranged, and a photochromic layer which is in a shading state when irradiated by light is arranged at the shading areas; the light transmission area is provided with a light transmission layer.
Preferably, the width of the light-transmitting region and the width of the light-shielding region are both L, L ═ iw/(i + w); wherein,
i is the interpupillary distance of the human eye and w is the width of one sub-pixel on the display panel.
Preferably, the polarizer further includes a transparent medium layer disposed between the polarizer original film layer and the grating layer.
Further preferably, the thickness of the transparent medium layer is d: d is wl/i; wherein l is the distance between the grating layer and human eyes, i is the interpupillary distance of the human eyes, and w is the width of one sub-pixel on the display panel.
Preferably, the polarizer further includes a first support layer disposed on the light exit surface side of the grating layer.
Further preferably, the material of the light transmission layer is the same as the material of the first support layer.
Further preferably, the polarizer further includes a protective layer disposed on the light exit surface side of the first support layer.
Preferably, the polarizer further comprises a second supporting layer, an adhesive layer and a release film layer which are sequentially arranged on the light incident surface side of the original film layer of the polarizer.
Preferably, the photochromic layer is made of a material that changes to a light-shielding state when irradiated with ultraviolet light.
Further preferably, the photochromic layer is made of bis (diphenylimidazole) 2.2-p-cycloaralkyl doped with titanium dioxide nanoparticles or zinc oxide nanoparticles.
The technical scheme adopted for solving the technical problem of the invention is a display device, wherein any one of the polaroids is arranged on the light emergent surface side of a display panel of the display device.
Preferably, the display device further includes a synchronous light source control module, and the synchronous light source control module is configured to emit light with a single wavelength to control the opening and closing of the grating layer.
The invention has the following beneficial effects:
because the polaroid is provided with the grating layer, the function of naked eye 3D display can be realized by attaching the polaroid layer to the light-emitting surface side of the display panel, compared with the existing naked eye 3D display device, the grating layer 2 is not required to be independently arranged on the light-emitting surface side of the display panel, so that the process flow for preparing the naked eye 3D display device is saved, and the production efficiency is improved; meanwhile, the grating layer of the embodiment comprises the shading area and the light transmitting area, namely the structure of the slit grating, the structure is simple, the manufacturing cost is low, the grating parameters are easy to change, the focusing problem does not exist, and the practicability is higher.
Drawings
FIG. 1 is a schematic view of a polarizer of example 1 of the present invention;
fig. 2 is a schematic view of a preferred embodiment of the polarizer of embodiment 1 of the present invention.
Wherein the reference numerals are: 1. a polarizer original film layer; 2. a grating layer; 3. a transparent dielectric layer; 4. a first support layer; 5. a second support layer; 6. an adhesive layer; 7. a release film layer; 8. a protective layer; a. a light-transmitting region; b. a light shielding area.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, the present embodiment provides a polarizer, which includes a polarizer original film layer 1, and a grating layer 2 disposed on a light exit surface side of the polarizer original film layer 1, where the grating layer 2 has a plurality of light-shielding regions b and light-transmitting regions a alternately disposed, and a photochromic layer disposed at the light-shielding regions b and configured to be in a light-shielding state when irradiated with light; the light transmitting area a is provided with a light transmitting layer.
Because the polarizer in the embodiment has the grating layer 2, the polarizer layer is attached to the light-emitting surface side of the display panel, so that the naked-eye 3D display function can be realized, and compared with the existing naked-eye 3D display device, the grating layer 2 is not required to be independently arranged on the light-emitting surface side of the display panel, so that the process flow for preparing the naked-eye 3D display device is saved, and the production efficiency is improved; meanwhile, the grating layer 2 of the embodiment includes the shading area b and the light transmitting area a, i.e., the structure of the slit grating, which has the advantages of simple structure, low manufacturing cost, easy change of grating parameters, no focusing problem, and high practicability.
It should be noted that, in the display device using the polarizer of the present embodiment, the photochromic layer is disposed in the light-shielding region b of the grating layer 2, when light is irradiated, the photochromic layer is in a light-shielding state, and at this time, the display device performs 3D image display; when no light is irradiated, the photochromic layer is in a light-transmitting state, and the display device displays a 2D picture.
Preferably, experiments prove that the widths of the light shielding region b and the light transmitting region a are adjusted according to the following formula, so that a better 3D display effect can be realized during display. The width of the light-transmitting area a and the width of the light-shielding area b are both L, and L is iw/(i + w); wherein i is the interpupillary distance of human eyes, and w is the width of one sub-pixel on the display panel.
Preferably, the polarizer further includes a transparent medium layer 3 disposed between the polarizer original film layer 1 and the grating layer 2. The reason why the transparent medium layer 3 is provided is that, in order to enable the grating layer 2 to be better applied to 3D display, a certain distance needs to be provided between the grating layer 2 and the polarizer original film layer 1, and the transparent medium layer 3 is equivalent to white glass between the grating layer 2 and the display panel when the grating layer 2 is provided on the light emitting surface side of the display device in the prior art. Further preferably, when the polarizer realizes a 3D display function, it is ensured that the overall thickness of the polarizer is not large, and the thickness of the transparent dielectric layer 3 is D: d is wl/i; wherein l is the distance between the grating layer and human eyes, i is the interpupillary distance of the human eyes, and w is the width of one sub-pixel on the display panel. For the liquid crystal display device, the thickness of the transparent medium layer 3 is about 1.5-19mm when the viewing distance is 2 m. In this case, the thickness of the transparent dielectric layer 3 may be set according to the specific situation. The specific value of the transparent medium layer 3 is not limited in this embodiment.
Preferably, the polarizer of this embodiment further includes a first support layer 4 disposed on the light exit surface side of the grating layer 2 and configured to support the polarizer original film layer 1. As shown in fig. 2, the material of the light transmission layer disposed in the transmission region of the grating layer 2 is the same as the material of the first support layer 4. The two structures can be formed by a single patterning process. Specifically, after forming the photochromic layer in the light-shielding region b of the grating layer 2, a layer of Cellulose Triacetate (TAC) is coated, and a pattern including the first support layer 4 and the light transmissive layer is formed through a one-time patterning process. At this time, the production cost can be saved, and the production efficiency can be improved. It should be noted that the dotted line at the interface where the light-transmitting region b and the first support 4 layer are in contact in fig. 2 is only for distinguishing the boundary of the two-layer structure, and does not have a practical meaning, and the light-transmitting region b and the first support 4 layer are formed as an integral structure.
Certainly, the polarizer in this embodiment further includes a protection layer 8 disposed on the light-emitting surface side of the first support layer 4, and a second support layer 5, an adhesive layer 6, and a release film layer 7 sequentially disposed on the light-emitting surface side of the polarizer original film layer 1.
The second support layer 5 has the same function as the first support layer 4 and is used for supporting the polarizer original film layer 1; the adhesive layer 6 is used for attaching the polarizer to the display device, when the polarizer is not used, the adhesive layer is provided with a release film layer 7, if the polarizer is attached to the display device, the release film layer 7 is peeled off, and the release film layer 7 has the characteristic of low peel strength; the protective layer 8 has antistatic and low peel strength properties, and is used to protect the polarizer from scratches.
Wherein, the material of the polarizer original film layer 1 is a high molecular polymer Polyvinyl Alcohol (PVA). Various organic dyes with dichroism are used for dyeing, meanwhile, stretching is carried out under the conditions of certain humidity and temperature, so that the polymer polyvinyl alcohol absorbs the dichroism dyes to form polarization performance, and a polarizer original film layer is formed after dehydration and drying.
Wherein, the material of the first support layer 4 and the second support layer 5 is Cellulose Triacetate (TAC). Since the original polarizer film 12 has hydrophilicity, it will deform, shrink, relax, fade quickly in a humid and hot environment, and has low strength, brittle and breakable, and is inconvenient to use and process, the first and second support layers 4 and 5 having high strength, high transmittance, and humidity and heat resistance are compounded on both sides of the original polarizer film, and at the same time, the first and second support layers 4 and 5 can absorb ultraviolet rays harmful to liquid crystal.
The Adhesive layer 6 is made of Pressure Sensitive Adhesive (PSA), which has low light leakage and is reusable, and is used for bonding with a display substrate.
In the polarizer of the present embodiment, it is preferable that the material of the photochromic layer is a material that becomes a light-shielding state when irradiated with ultraviolet light. Wherein, the material of the photochromic layer is bisdiphenylimidazole [2.2] p-cycloaralkyl doped with titanium dioxide nano-particles or zinc oxide nano-particles. At this time, the photochromic layer becomes dark blue after 25ms of irradiation of the ultraviolet light so that the grating layer forms stripes alternating between light and dark, and becomes transparent after 25ms when the irradiation of the ultraviolet light is canceled. Of course, the material of the photochromic layer may be other materials that can be changed into a light-shielding state by light irradiation, and the material may be different according to different lights, as long as the material can realize that the photochromic layer is in the light-shielding state when the material is irradiated by light, and the photochromic layer is in the light-transmitting state when the material is not irradiated by light.
Example 2:
this embodiment provides a display device including the polarizer described in embodiment 1. Therefore, when light irradiates, the photochromic layer is in a light-shielding state, and the display device displays a 3D picture; when no light is irradiated, the photochromic layer is in a light-transmitting state, and the display device displays a 2D picture.
It should be noted that the illumination is different from the property of the light of the backlight of the display device, otherwise, the display device can only implement 2D display or 3D display, and cannot implement 2D and 3D switched display.
In the display device of this embodiment, the display device further includes a synchronous light source control module, and the synchronous light source control module is configured to emit light with a single wavelength to control the opening and closing of the grating layer 2. The synchronous light source control module performs corresponding adjustment of the emitter and the receiver to directly control the state of the grating layer 2 to be on or off by single-wavelength light, and the position of the emitter can be selected near a backlight source or in the range of a front view angle of a television. Of course, the display device of the present embodiment further includes known elements such as a driving chip, which are not listed here.
The display device provided by the invention can be a liquid crystal display device in any mode such as TN, ADS, IPS, LTPS and the like. The display device can be any product or component with a display function, such as a liquid crystal panel, a liquid crystal television, a display, a mobile phone, a navigator and the like.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (12)
1. A polaroid comprises a polaroid original film layer and is characterized by further comprising a grating layer arranged on the light emitting surface side of the polaroid original film layer, wherein the grating layer is provided with a plurality of shading areas and light transmitting areas which are alternately arranged, and a photochromic layer which is changed into a shading state when irradiated by light is arranged at the shading areas; the light transmission area is provided with a light transmission layer.
2. The polarizer according to claim 1, wherein the width of the light-transmitting region and the width of the light-shielding region are both L, L ═ iw/(i + w); wherein,
i is the interpupillary distance of the human eye and w is the width of one sub-pixel on the display panel.
3. The polarizer of claim 1, further comprising a transparent dielectric layer disposed between the polarizer original film layer and the grating layer.
4. The polarizer of claim 3, wherein the thickness of the transparent dielectric layer is d: d is wl/i; wherein l is the distance between the grating layer and human eyes, i is the interpupillary distance of the human eyes, and w is the width of one sub-pixel on the display panel.
5. The polarizer of claim 1, further comprising a first support layer disposed on the light exit surface side of the grating layer.
6. The polarizer according to claim 5, wherein a material of the light transmission layer is the same as a material of the first support layer.
7. The polarizer of claim 5, further comprising a protective layer disposed on a light exit surface side of the first support layer.
8. The polarizer according to any of claims 1 to 7, further comprising a second support layer, an adhesive layer, and a release film layer disposed in this order on the light incident surface side of the polarizer original film layer.
9. The polarizer according to any one of claims 1 to 7, wherein a material of the photochromic layer is a material which becomes a light-shielding state upon irradiation with ultraviolet light.
10. The polarizer according to claim 9, wherein the material of the photochromic layer is bisdiphenylimidazo [2.2] paracyclophane doped with titanium dioxide nanoparticles or zinc oxide nanoparticles.
11. A display device, wherein the polarizer according to any one of claims 1 to 10 is provided on a light exit surface side of a display panel of the display device.
12. The display device according to claim 11, further comprising a synchronous light source control module, wherein the synchronous light source control module is configured to emit light with a single wavelength to control the opening and closing of the grating layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510014699.1A CN104516044B (en) | 2015-01-12 | 2015-01-12 | Polaroid and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510014699.1A CN104516044B (en) | 2015-01-12 | 2015-01-12 | Polaroid and display device |
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| CN107976838A (en) * | 2017-12-25 | 2018-05-01 | 深圳市华星光电技术有限公司 | Polaroid and preparation method thereof and display panel |
| WO2020051985A1 (en) * | 2018-09-12 | 2020-03-19 | 重庆惠科金渝光电科技有限公司 | Display panel and display device |
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| CN106019614A (en) * | 2016-07-28 | 2016-10-12 | 京东方科技集团股份有限公司 | 3D display panel, preparation method thereof, and 3D display device |
| CN106019614B (en) * | 2016-07-28 | 2018-09-18 | 京东方科技集团股份有限公司 | 3D display panel and preparation method thereof, 3D display device |
| CN106371217A (en) * | 2016-10-25 | 2017-02-01 | 宁波维真显示科技股份有限公司 | Manufacturing method for naked-eye 3D display device having slit grating |
| CN107976838A (en) * | 2017-12-25 | 2018-05-01 | 深圳市华星光电技术有限公司 | Polaroid and preparation method thereof and display panel |
| CN107976838B (en) * | 2017-12-25 | 2020-11-13 | 深圳市华星光电技术有限公司 | Polaroid and manufacturing method thereof and display panel |
| WO2020051985A1 (en) * | 2018-09-12 | 2020-03-19 | 重庆惠科金渝光电科技有限公司 | Display panel and display device |
| US11249368B2 (en) | 2018-09-12 | 2022-02-15 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Display panel and display device |
| WO2022247012A1 (en) * | 2021-05-27 | 2022-12-01 | 武汉华星光电半导体显示技术有限公司 | Display module |
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