CN113253378A - Flexible polarizer, display panel and preparation method - Google Patents
Flexible polarizer, display panel and preparation method Download PDFInfo
- Publication number
- CN113253378A CN113253378A CN202110681316.1A CN202110681316A CN113253378A CN 113253378 A CN113253378 A CN 113253378A CN 202110681316 A CN202110681316 A CN 202110681316A CN 113253378 A CN113253378 A CN 113253378A
- Authority
- CN
- China
- Prior art keywords
- layer
- wave plate
- pva film
- flexible polarizer
- srf
- 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
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Polarising Elements (AREA)
Abstract
The application discloses a flexible polarizer, a display panel and a preparation method, wherein the flexible polarizer comprises an SRF layer, a PVA film layer, a first wave plate layer and a second wave plate layer which are sequentially arranged, and the adjacent layers are connected through an adhesive layer; the SRF in-plane delay is greater than 5000 nanometers. According to the technical scheme provided by the embodiment of the application, the SRF layer is additionally arranged on the PVA film layer and is an optical retardation film with large retardation, so that the formed flexible polarizer has no rainbow texture phenomenon when the polarizer is used.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible polarizer, a display panel and a preparation method.
Background
The flexible cover plate selected by the flexible foldable display module is mostly made of transparent polyimide materials in the market at present, and the transparent polyimide materials have obvious difference in each direction and obvious optical delay. Adopt above-mentioned flexible apron to carry on display module assembly, the polaroid glasses look can appear obvious rainbow line under the sense especially squint angle, disturb display effect.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a flexible polarizer, a display panel and a manufacturing method thereof.
The flexible polarizer comprises an SRF layer, a PVA film layer, a first wave plate layer and a second wave plate layer which are sequentially arranged, wherein the adjacent layers are connected through an adhesive layer;
the SRF in-plane delay is greater than 5000 nanometers.
Further, the thickness of the SRF layer is more than 50 μm.
Further, the first wave plate is a half wave plate, and the second wave plate is a quarter wave plate.
Furthermore, an included angle between the absorption axis of the PVA film and the slow axis of the first wave plate is alpha.
Furthermore, the included angle between the absorption axis of the PVA film and the slow axis of the second wave plate is 2 alpha +45 degrees.
Further, α is 15 ° ± 10 °.
Further, the PVA film layer is an iodine polarizing film.
Furthermore, the bonding layer is prepared from UV glue, pressure-sensitive adhesive or thermosetting water gel.
Furthermore, the second wave plate layer is far away from one side of the first wave plate layer is further provided with a pressure-sensitive adhesive layer, and the pressure-sensitive adhesive layer is far away from one side of the second wave plate layer is further provided with a release film layer.
In a second aspect, a display panel is provided, which includes the flexible polarizer.
In a third aspect, a method for preparing the flexible polarizer is provided, which includes the steps of: providing a PVA film layer, and adhering a first wave plate layer on one side of the PVA film layer;
a second wave plate layer is pasted on one side of the first wave plate layer far away from the PVA film layer,
and an SRF film layer is adhered to one side of the PVA film layer, which is far away from the first wave plate layer.
According to the technical scheme provided by the embodiment of the application, the SRF layer is additionally arranged on the PVA film layer and is an optical retardation film with large retardation, so that the formed flexible polarizer has no rainbow texture phenomenon when the polarizer is used.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of an embodiment of a flexible polarizer;
FIG. 2 is a schematic diagram of a flexible polarizer according to another embodiment;
FIG. 3 is a schematic diagram of a display panel according to an embodiment;
FIG. 4 is a flowchart illustrating a method for fabricating a flexible polarizer according to an embodiment.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the present embodiment provides a flexible polarizer, which includes an SRF layer 10, a PVA film layer 20, a first wave plate layer 30, and a second wave plate layer 40, which are sequentially disposed, and adjacent layers are connected by an adhesive layer 50;
the SRF layer 10 has an in-plane retardance of greater than 5000 nanometers.
In the flexible polarizer provided in this embodiment, the SRF layer 10(SRF, super-birefringent film) is additionally disposed on the PVA film layer 20, and the SRF layer 10 is an optical retardation film with a large retardation amount, so that the formed flexible polarizer has no rainbow texture phenomenon when the polarizer is used; simultaneously, in order to guarantee that the flexible polarizer that sets up SRF layer 10 uses the better that the rainbow line phenomenon got rid of down in the polarizer, the preferred SRF layer that delays more than 5000 nanometers in selecting for use in the face, higher in-plane delay makes this flexible polarizer light interference's when using look preface postpone, and the colour that the naked eye sees is very shallow for flexible polarizer has the better effect of getting rid of the rainbow line.
Preferably, the SRF layer 10 has an in-plane retardance of greater than 8000 nm. In order to fully satisfy the requirement of human eye viewing, the material with the in-plane retardation of more than 8000 nm of the SRF layer is preferably adopted to remove the rainbow veins.
Further, the SRF layer 10 is greater than 50 μm thick.
In order to ensure that the in-plane retardation of the SRF layer 10 is greater than 5000 nm, the SRF layer with the thickness of more than 50 μm is preferably adopted to ensure the parameters of the in-plane retardation of the structure; if the SRF structure is small in thickness and the in-plane retardation can meet the requirement of being larger than 5000 nanometers, a corresponding thinner material can be selected for preparing the flexible polarizer; wherein, the material of the SRF layer is generally prepared by polyethylene terephthalate.
Further, the first wave plate 30 is a half wave plate, and the second wave plate 40 is a quarter wave plate.
In this embodiment, the first wave plate 30 is a half wave plate through which the light passes to generate a phase difference of one-half wavelength, and the second wave plate 40 is a quarter wave plate through which the light passes to generate a phase difference of one-quarter wavelength.
Further, an included angle between the absorption axis of the PVA film 20 and the slow axis of the first wave plate 30 is α.
The flexible polarizer in this embodiment is generally disposed on the display panel, and the half-wave plate includes a fast axis and a slow axis in a plane parallel to the display panel; the PVA film can convert natural light into linearly polarized light, the thickness is preferably 1-15 μm, the PVA film has an absorption axis, and a certain included angle is preferably set between the absorption axis of the PVA film and the slow axis of the half-wave plate.
Further, the included angle between the absorption axis of the PVA film layer 20 and the slow axis of the second wave plate 40 is 2 α +45 °.
In this embodiment, the second wave plate is a quarter-wave plate, the quarter-wave plate includes a fast axis and a slow axis in a plane parallel to the display panel, and preferably, an included angle is formed between the absorption axis of the PVA film and the slow axis of the quarter-wave plate, and the included angle is 2 α +45 °.
Further, α is 15 ° ± 10 °.
In the embodiment, the included angle between the absorption axis of the PVA film and the slow axis of the half-wave plate is preferably set to be 15 +/-10 degrees, so that the good integral effect of the whole wave band in the visible light range is ensured; preferably, the angle is chosen to be 15 °.
Preferably, the PVA film layer 20 is an iodine-based polarizing film.
In the embodiment, the iodine polarizing film is used as the PVA film layer, which has a bending function, so that the prepared polarizer also has a flexible bending function, and can be applied to a foldable display module; meanwhile, the PVA film layer can also be prepared by conventional organic materials and can be selected according to the requirements of the display module.
Preferably, the adhesive layer 50 is made of UV glue or pressure sensitive adhesive or thermal curing type water gel.
In this embodiment, the adjacent film structures are connected by an adhesive layer, and the material of the adhesive layer can be selected according to the process requirements.
Further, the second wave plate layer 40 is far away from one side of the first wave plate layer 30 and is further provided with a pressure sensitive adhesive layer 60, and the pressure sensitive adhesive layer 60 is far away from one side of the second wave plate layer 40 and is further provided with a release film layer 70.
As shown in fig. 2, this embodiment also provides a flexible polarizer, the one side of keeping away from the first wave plate 30 at the second wave plate 40 sets gradually pressure sensitive adhesive layer 60 and leaves type membrane layer 70, because the first wave plate 30 and the second wave plate 40 structure are comparatively fragile, protect first wave plate 30 and second wave plate 40 through above-mentioned two-layer structure, increase simultaneously and set up pressure sensitive adhesive layer 60 and leave the ejection of compact that flexible polarizer that type membrane layer 70 made the preparation to form can be complete, and other layer structures are not influenced.
The embodiment also provides a display panel comprising the flexible polarizer.
The display panel in the embodiment is prepared by adopting the flexible polarizer, and no rainbow texture phenomenon exists under polarized glasses; and the display panel can be set into a flexible bending structure, so that the display panel has a wider application range.
As shown in fig. 3, this embodiment provides a schematic structural diagram of a display panel, in which the structures of the flexible polarizers 10 to 60 in the above embodiments are adopted, an UTG (ultra-thin glass) cover plate 80 is added, an OLED display 90 is disposed under the UTG cover plate 80, the UTG cover plate 80 is bonded to the OLED display 90 through a pressure-sensitive adhesive 60, and a back support material 100 is further disposed under the OLED display 90. The display panel can be prepared into a flexible foldable structure, can be dynamically bent for 20 ten thousand times, can meet the bending radius r1.5 and above, comprises a U-shaped and water-drop-shaped bending shape, is subjected to a reliability test for 240hrs under the condition of 65 ℃/95% rh, and is prepared into a display module without rainbow texture under polarized glasses.
As shown in fig. 4, this embodiment further provides a method for manufacturing a flexible polarizer, including the steps of: s10: providing a PVA film layer, and adhering a first wave plate layer on one side of the PVA film layer;
s20: a second wave plate layer is pasted on one side of the first wave plate layer far away from the PVA film layer,
s30: and an SRF film layer is adhered to one side of the PVA film layer, which is far away from the first wave plate layer.
The embodiment also provides a preparation method of the flexible polarizer, wherein an SRF layer and a first wave plate layer are respectively adhered to two sides of a PVA film layer, a second wave plate layer is adhered to one side, away from the SRF layer, of the first wave plate layer, the film layers are adhered through UV glue, pressure sensitive glue, thermosetting water glue or the like, and the adhesive material forms an adhesive layer between adjacent layers.
Furthermore, one side of the second wave plate layer, which is far away from the first wave plate layer, is provided with a pressure-sensitive adhesive layer, and one side of the pressure-sensitive adhesive layer, which is far away from the second wave plate layer, is provided with a release film layer.
Wherein, increase at second wave plate opposite side and set up pressure-sensitive adhesive layer and leave the type rete, protect the material of above-mentioned flexible polaroid through above-mentioned two-layer material, the flexible polaroid of further formation can the complete ejection of compact, the use of the follow-up step of being convenient for.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (11)
1. A flexible polarizer is characterized by comprising an SRF layer, a PVA film layer, a first wave plate layer and a second wave plate layer which are sequentially arranged, wherein the adjacent layers are connected through an adhesive layer;
the SRF in-plane delay is greater than 5000 nanometers.
2. The flexible polarizer of claim 1 wherein the SRF layer is thicker than 50 μ ι η.
3. The flexible polarizer of claim 1 or 2 wherein the first wave plate is a half wave plate and the second wave plate is a quarter wave plate.
4. The flexible polarizer of claim 3 wherein the absorption axis of the PVA film layer forms an angle α with the slow axis of the first wave plate.
5. The flexible polarizer of claim 4 wherein the included angle between the absorption axis of the PVA film and the slow axis of the second wave plate is 2 α +45 °.
6. The flexible polarizer of claim 4 wherein α is 15 ° ± 10 °.
7. The flexible polarizer of claim 3 wherein the PVA film layer is an iodine based polarizing film.
8. The flexible polarizer according to claim 1 or 2 wherein the adhesive layer is prepared by using UV glue or pressure sensitive adhesive or heat curable water gel.
9. The flexible polarizer according to claim 1 or 2, wherein a side of the second wave plate layer away from the first wave plate layer is further provided with a pressure sensitive adhesive layer, and a side of the pressure sensitive adhesive layer away from the second wave plate layer is further provided with a release film layer.
10. A display panel comprising the flexible polarizer of any of claims 1 to 9.
11. A method of manufacturing a flexible polarizer according to any of claims 1 to 9 comprising the steps of: providing a PVA film layer, and adhering a first wave plate layer on one side of the PVA film layer;
a second wave plate layer is pasted on one side of the first wave plate layer far away from the PVA film layer,
and an SRF film layer is adhered to one side of the PVA film layer, which is far away from the first wave plate layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681316.1A CN113253378A (en) | 2021-06-18 | 2021-06-18 | Flexible polarizer, display panel and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681316.1A CN113253378A (en) | 2021-06-18 | 2021-06-18 | Flexible polarizer, display panel and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113253378A true CN113253378A (en) | 2021-08-13 |
Family
ID=77188648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110681316.1A Pending CN113253378A (en) | 2021-06-18 | 2021-06-18 | Flexible polarizer, display panel and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113253378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023065421A1 (en) * | 2021-10-19 | 2023-04-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
-
2021
- 2021-06-18 CN CN202110681316.1A patent/CN113253378A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023065421A1 (en) * | 2021-10-19 | 2023-04-27 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6664866B2 (en) | Set of polarizing plate and front panel integrated liquid crystal display panel | |
| CN100447625C (en) | Polarizers for use with liquid crystal displays | |
| JP6294043B2 (en) | Set of polarizing plates | |
| TWI255354B (en) | Method for producing polarizing plate, polarizing plate and image display device using the same | |
| KR102118016B1 (en) | Continuous optical film laminate, roll of continuous optical film laminate and IPS liquid crystal display device | |
| WO2015050075A1 (en) | Set of polarizing plates and front plate-integrated liquid crystal display panel | |
| WO2004090590A1 (en) | Optical element, polarization element, and illuminating device and liquid crystal display unit | |
| WO2015050074A1 (en) | Set of polarizing plates and front plate-integrated liquid crystal display panel | |
| JP2001235625A (en) | Polarizing plate | |
| US6831713B2 (en) | Polarizing plate having all surfaces and sides covered with low moisture-permeable layers and liquid crystal display using the same | |
| TW460715B (en) | Polarizing element and optical element | |
| JP2002221715A (en) | Liquid crystal display device and liquid crystal display using the same | |
| JP2013225088A (en) | Optical element and manufacturing method therefor | |
| CN113253378A (en) | Flexible polarizer, display panel and preparation method | |
| JP2001154020A (en) | Polarizing plate and optical member | |
| JP2003050313A (en) | Polarizing plate and liquid crystal display element | |
| CN215599398U (en) | Flexible polarizer and display panel | |
| JP2003025473A (en) | Optical member | |
| JP2006323042A (en) | Method for manufacturing laminated polarizing film | |
| JP2000347010A (en) | Optical member and liquid crystal display device | |
| JP4522614B2 (en) | LAMINATED OPTICAL FILM, ITS MANUFACTURING METHOD, AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME | |
| JPH08146219A (en) | Reflecting polarizing plate | |
| JP2003043262A (en) | Method for manufacturing laminated optical film | |
| JP2002303726A (en) | Polarizing film, protective film for polarizer, method for manufacturing polarizing film, optical film and liquid crystal display device both using the polarizing film | |
| JP2003149634A (en) | Liquid crystal display element |
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 |