CN111897041A - Polarizing plate and electronic device comprising same - Google Patents
Polarizing plate and electronic device comprising same Download PDFInfo
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- CN111897041A CN111897041A CN202010740785.1A CN202010740785A CN111897041A CN 111897041 A CN111897041 A CN 111897041A CN 202010740785 A CN202010740785 A CN 202010740785A CN 111897041 A CN111897041 A CN 111897041A
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- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 238000002834 transmittance Methods 0.000 claims abstract description 22
- 239000010408 film Substances 0.000 claims description 53
- -1 polyethylene terephthalate Polymers 0.000 claims description 9
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 6
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 6
- 239000004713 Cyclic olefin copolymer Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 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 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
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- 229910052740 iodine Inorganic materials 0.000 claims description 4
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- 239000012788 optical film Substances 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
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- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
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Images
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
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
Abstract
The invention discloses a polarizing plate and an electronic device comprising the same, wherein the polarizing plate comprises a first protective film, a second protective film and a polarizing film, and the polarizing film is clamped between the first protective film and the second protective film, wherein the polarizing film comprises a first polarizing area and a second polarizing area which have different polarization degrees, the polarization degree of the first polarizing area is more than 99.9 percent and less than 100 percent, and the light transmittance is between 40 percent and 45 percent; the second polarization area has a polarization degree not less than 90% and not more than 99.9%, and a light transmittance between 45% and 48%. The polarizing plate is suitable for an electronic device having a display element integrated with a camera module. The polarizing plate and the electronic device comprising the same can achieve higher display ratio and hide a camera lens.
Description
Technical Field
The present invention relates to a polarizing plate, and more particularly, to a polarizing plate suitable for an electronic device, and an electronic device including the same.
Background
In recent years, various electronic devices such as personal computers, mobile communication devices and wearable devices have been widely used, and various input devices and/or output devices such as displays, touch panels, sensors and camera modules are equipped in a limited space at the same time, so that the development of related technologies is more important. Currently, the structural design of an electronic device having a display integrated with a camera module has become the mainstream of the market. As shown in the top view of fig. 1, in the conventional electronic device having a display integrated with a camera module, in order to prevent the camera module from being visible outside the electronic device, the camera module 14 is disposed in the frame 18 of the display area 15 of the electronic device. However, as the screen of the display of the electronic device is further maximized, the camera module is also integrated into the display. Please refer to fig. 2A and 2B, which are schematic cross-sectional, top/bottom views of a conventional electronic device 2A including an integrated camera module and a display device. As shown in fig. 2A, the camera module 24 of the electronic device 2A is disposed in the display 200, and a hollow area is formed by cutting the polarizer 22 and the display element 23 by mechanical profile cutting, drilling, etc. to correspond to and accommodate the camera module 24, so that the camera lens 21 is not shielded to realize the photographing function. In the electronic device 2a of this type, since the display area 25 is provided with the functional region 26 of the camera module, which occupies a part of the display area 25 and reduces the display occupation ratio of the display area 25 in the display 200, it is one of the major points of the active technical improvement of each electronic equipment manufacturer to improve the mounting form of the camera module and to increase the display occupation ratio of the display.
As OLED display technology develops, the feasibility of mounting a camera module under a display and improving the display duty of the display has been proposed in the related art. Fig. 3A and 3B are schematic cross-sectional and top views of a conventional electronic device with an OLED display integrated with a camera module. As shown in fig. 3A and 3B, the electronic device 3A includes an OLED display 300 and a camera module 34, wherein the camera module 34 is disposed below the OLED display 300 including a polarizer 32 and an OLED display element 33, so that the electronic device 3A can achieve the purpose of displaying on a full screen of a display area 35. However, in order to prevent the polarization characteristics of the polarizer 32 on the OLED display device 33 from affecting the light sensitivity of the lens 31 of the camera module 34, and thus the photographing quality is degraded, the lens 31 of the camera module 34 must be matched with the polarization failure area 32b on the polarizer 32. However, when the photographing function of the camera module 34 corresponding to the polarization-disabled area 32b is not activated, the non-polarization degree of the area causes the display quality of the area to be degraded when the area is activated with the display function, and the camera lens 31 under the area is also visible on the electronic device 3a due to the high transmittance of the polarization-disabled area 32 b.
Therefore, a solution is needed for an electronic device that integrates a camera module into a display and can hide a camera lens on the electronic device.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a polarizing plate and an electronic device including the same to solve the above problems.
Accordingly, an object of the present invention is to provide a polarizing plate, including:
a first protective film;
a second protective film; and
a polarizing film disposed between the first protective film and the second protective film, the polarizing film including a first polarizing region and a second polarizing region;
wherein, the polarization degree of the first polarization area is more than 99.9% and less than 100%, and the light transmittance is between 40% and 45%; the second light polarization area has a polarization degree not less than 90% and not more than 99.9%, and a light transmittance between 45% and 48%.
As an optional technical scheme, the polarizing film is one or a combination of an iodine polarizer, a dye polarizer and a polyvinyl polarizer.
As an optional technical solution, the film materials of the first protective film and the second protective film are polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polycarbonate (PC), triacetyl cellulose (TAC), Polyimide (PI), Polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), or Cyclic Olefin Copolymer (COC).
The present invention also provides an electronic device, comprising:
a display element including a display region;
a polarizing plate disposed on the display element; and
a camera module integrated with the display device, wherein the display area includes a functional region corresponding to the camera module;
the polarizing plate comprises a first polarizing area and a second polarizing area with different polarizing characteristics, wherein the first polarizing area and the second polarizing area have different polarizing degrees and light transmittances, and the second polarizing area is located on the functional area corresponding to the camera module.
As an optional technical solution, the second polarization area completely covers the functional area corresponding to the camera module.
As an optional technical solution, the polarization degree of the second polarization area of the polarizing plate is not less than 90% and not more than 99.9%, and the light transmittance is between 45% and 48%.
As an optional technical solution, a polarization degree of the first polarization area of the polarizer is greater than 99.9% and less than 100%, a light transmittance is between 40% and 45%, and the first polarization area covers an area of the display area other than the functional area corresponding to the camera module.
As an alternative solution, the second protective film is a functional optical film.
As an optional technical solution, the functional area corresponding to the camera module is an area in the display area, which corresponds to a range area of a lens of the camera module and can effectively sense light to further complete a shooting action.
Compared with the prior art, the polarizing plate suitable for the electronic device with the display element integrated with the camera module comprises the first polarizing area and the second polarizing area which have different polarization degrees and light transmittances, so that when the polarizing plate is applied to the electronic device with the display element integrated with the camera module, the purposes that the lens of the camera module can be hidden and the camera module has excellent photographing quality and display quality under the full-screen display of the electronic device can be achieved. The polarizing plate and the electronic device comprising the same can improve the display ratio of a display and hide a camera lens.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic cross-sectional view of a conventional electronic device having a display integrated with a camera module.
Fig. 2A and 2B are schematic cross-sectional, top/bottom views of a conventional electronic device with an integrated camera module to a display.
Fig. 3A and 3B are schematic cross-sectional and top views of a conventional electronic device with an OLED display integrated with a camera module.
Fig. 4 is a schematic cross-sectional view of a polarizer suitable for use in an electronic device according to an embodiment of the present invention.
Fig. 5 is a schematic sectional view of a polarizing film manufacturing method drawn according to an embodiment of the present invention.
Fig. 6A and 6B are schematic cross-sectional views of two electronic devices including a polarizer, a display element and a camera module according to an embodiment of the invention.
Fig. 6C is a top view of the electronic device of fig. 6A and 6B.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
In order to make the disclosure more complete and complete, the following description is given for illustrative purposes, with reference to embodiments and examples of the invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The various embodiments disclosed below may be combined with or substituted for one another where appropriate, and additional embodiments may be added to one embodiment without further recitation or description.
The advantages, features, and advantages of the present invention will be more readily understood by reference to the following detailed description of exemplary embodiments and the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein but, on the contrary, is provided for a person of ordinary skill in the art to so fully convey the scope of the present invention and that the present invention is defined only by the appended claims.
Unless otherwise defined, all terms (including technical and scientific terms) and terminology used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an overly idealized or overly formal sense unless expressly so defined herein.
In addition, the term "transmittance" as used herein refers to the ratio of the intensity of light incident on visible wavelengths transmitted through the polarizer to the intensity of light not incident on the polarizer. "polarization degree" refers to the ratio of the intensity difference between the vibration direction of transmitted light parallel to the absorption axis and the vibration direction of transmitted light perpendicular to the absorption axis to the intensity of transmitted light after the incident light with visible light wavelength transmits through the polarizer.
The polarizing plate of the present invention is described below with reference to the drawings. First, referring to fig. 4, as shown in fig. 4, the polarizing plate 42 for an electronic device of the present invention sequentially includes a first protective film 421, a polarizing film 422, and a second protective film 423, and the polarizing film 422 includes a first polarizing area 42a and a second polarizing area 42b with different polarization degrees.
In the embodiment of the present invention, the suitable polarizing film 422 may be a polarizer known in the related art, such as an iodine-based polarizer, a dye-based polarizer, a polyvinyl-based polarizer, and the like, or a combination thereof, without particular limitation.
In the embodiment of the present invention, the first protective film 421 and the second protective film 423 are used to protect and support the polarizing film 422, and therefore, suitable materials may be selected from films having good mechanical strength and light transmittance, which may be, but not limited to, resin films of polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polycarbonate (PC), triacetyl cellulose (TAC), Polyimide (PI), Polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), Cyclic Olefin Copolymer (COC), or the like. In addition, in order to provide the surface characteristics required for the electronic device when the polarizing plate 42 is applied to the electronic device, the surface of the polarizing plate 42 may further include a functional coating film, wherein the functional coating film may be selected from one or a combination of an anti-scratch coating film, an anti-reflection film, an anti-glare film, an anti-reflection-anti-glare film, an oil-repellent film, and the like.
In another embodiment of the present invention, the second protection film 423 may also be a functional optical film, such as a retardation film.
The polarizing plate suitable for the electronic device is an iodine-based polarizer, a dye-based polarizer, a polyalkylene-based polarizer, or the like, or a combination thereof, having a polarization degree of more than 99.9% and less than 100%, and a light transmittance of 40% to 50%. The method for forming the polarizing plate of the present invention can be performed by subjecting a polarizing plate suitable for an electronic device to a local depolarization process, such as exposure treatment of a polarizing film or a color removal process using a chemical agent. Fig. 5 is a schematic view illustrating a method for forming the first polarized light region 42a and the second polarized light region 42b by the polarizing film 422 of the invention. As shown in fig. 5, the polarizing film 422 of the polarizing plate to which the electronic device is applied is shielded by an opaque shield 59 having an opening 591 with an appropriate size, and is irradiated with the light source 58 with controlled irradiation energy to form a second polarized region 42b, which is depolarized, on the polarizing film 422. In the irradiation step, the light source 58 may be a light source capable of providing a suitable irradiation energy, and suitable light sources may be, but are not limited to, low-pressure mercury lamps, medium-pressure mercury lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, chemical lamps, black-light lamps, microwave-excited mercury lamps and metal halide lamps, and the suitable irradiation wavelength may be in the wavelength range of 200nm to 1000nm, and the irradiation intensity is preferably 0.5kW/cm2 to 5.9kW/cm 2. In order to effectively produce the second polarizing region 42b in the polarizing film 422 and prevent the exposed portion from being locally deteriorated due to high heat generated by long-time exposure, it is preferable that the integrated light amount of the product of the irradiation intensity and the irradiation time is set to be 20 to 140J/cm 2. In the embodiment of the present invention, the planar shape of the second light deflecting region 42b may not be limited, and may be a regular shape or an irregular shape as long as it can conform to the corresponding functional region.
Please refer to fig. 6A, 6B and 6C. Fig. 6A is a schematic cross-sectional view of an electronic device 600a with an integrated camera module 64a according to an embodiment of the invention, which includes a display element 63a, a polarizer 42, and a camera module 64a integrated with the display element 63a and having a lens 61 a; fig. 6B is a schematic diagram illustrating an electronic device 600B with an integrated camera module 64B according to another embodiment of the invention, which includes a display element 63B, a polarizer 42, and the camera module 64B integrated with the display element 63B and having a lens 61B. The difference between the electronic device shown in fig. 6A and the electronic device shown in fig. 6B is that the display element 63a is not hollowed out in the electronic device shown in fig. 6A, and the camera module 64a is disposed below the display element 63 a. In the electronic device shown in fig. 6B, the display device 63B is hollowed out, so that at least a part of the camera module 64B is accommodated in the hole of the display device 63B. Since the top views of the electronic devices shown in fig. 6A and 6B are the same, both are illustrated in fig. 6C. The electronic device shown in fig. 6A will be specifically described below. The display device 63a includes a display area 65, and the display area 65 includes a functional area 66 of the camera module 64a corresponding to the range area of the lens 61a of the camera module 64a and capable of effectively sensing light to further complete the shooting operation. The polarizer 42 covers the display area 65, and the polarizer 42 includes a first polarization area 42a and a second polarization area 42b with different polarization degrees and different light transmittances, wherein the second polarization area 42b is located on the functional area 66 corresponding to the camera module 64a, and the first polarization area 42a covers an area of the display area 65 other than the functional area 66 corresponding to the camera module 64 a. In a preferred embodiment of the present invention, the second light-deflecting region 42b can completely cover the functional region 66 of the display region 65 corresponding to the camera module 64 a. In a preferred embodiment of the present invention, the polarization degree of the second polarization area 42b is not less than 90% and not more than 99.9%, preferably not less than 91% and not more than 98%, and the light transmittance is between 45% and 48%; the first polarization area 42a has a polarization degree greater than 99.9% and less than 100%, and a light transmittance between 40% and 45%.
The specific transmittance of the second polarization region 42b of the polarizer 42 corresponds to the functional region 66 of the camera module 64a, so that the camera module 64a can effectively sense light to further complete the photographing operation, and the high polarization degree of the first polarization region 42a corresponds to the region outside the functional region 66 of the camera module 64a in the display region 65, so as to provide excellent display quality in the region. In the installation configuration of the electronic device 600a, the camera module 64a with the lens 61a is integrated below the display device 63a, so that when the photographing function of the corresponding camera module 64a of the second polarized light region 42b is not activated, the specific polarization degree of the second polarized light region 42b enables the region to have good display quality when the region is activated with the display function, and the camera lens 61a below the region is hidden on the electronic device 600 a.
In the embodiment of the present invention, the display element 63a may be a display element known in the related art, such as an LED display element, an LCD liquid crystal display element, an OLED display element, and the like, or a combination thereof, without particular limitation.
It should be noted that the above description is given by taking the electronic device shown in fig. 6A as an example, and in actual operation, the arrangement and subsequent operations of the polarizing plate 42 in the electronic device shown in fig. 6B are similar to those in fig. 6A, and are not repeated herein.
In summary, the polarizing plate of the present invention includes the first polarizing region and the second polarizing region having different polarization degrees and light transmittances, so that when the polarizing plate is applied to an electronic device having a display element integrated with a camera module, the objective of hiding a lens of the camera module and having excellent photographing quality and display quality under full-screen display of the electronic device can be achieved.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A polarizing plate, comprising:
a first protective film;
a second protective film; and
a polarizing film disposed between the first protective film and the second protective film, the polarizing film including a first polarizing region and a second polarizing region;
wherein, the polarization degree of the first polarization area is more than 99.9% and less than 100%, and the light transmittance is between 40% and 45%; the second light polarization area has a polarization degree not less than 90% and not more than 99.9%, and a light transmittance between 45% and 48%.
2. The polarizing plate of claim 1, wherein the polarizing film is one or a combination of an iodine-based polarizer, a dye-based polarizer, and a polyvinyl-based polarizer.
3. The polarizing plate of claim 1, wherein a film material of the first protective film and the second protective film is polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polycarbonate (PC), triacetyl cellulose (TAC), Polyimide (PI), Polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC), or Cyclic Olefin Copolymer (COC).
4. An electronic device, comprising:
a display element including a display region;
a polarizing plate disposed on the display element; and
a camera module integrated with the display device, wherein the display area includes a functional region corresponding to the camera module;
the polarizing plate comprises a first polarizing area and a second polarizing area with different polarizing characteristics, wherein the first polarizing area and the second polarizing area have different polarizing degrees and light transmittances, and the second polarizing area is located on the functional area corresponding to the camera module.
5. The electronic device according to claim 4, wherein the second polarizing region completely covers the functional region corresponding to the camera module.
6. The electronic device of claim 4, wherein the second polarization area of the polarizer has a polarization degree of not less than 90% and not more than 99.9%, and a light transmittance of 45% to 48%.
7. The electronic device of claim 4, wherein the first polarization area of the polarizer has a polarization degree greater than 99.9% and less than 100% and a light transmittance between 40% and 45%, and covers an area of the display area other than the functional area corresponding to the camera module.
8. The electronic device according to claim 4, wherein the surface of the polarizing plate further comprises a functional coating film selected from one or a combination of an anti-scratch coating film, an anti-reflection film, an anti-glare film, an anti-reflection-anti-glare film, and an oil-repellent film.
9. The electronic device according to claim 2, wherein the second protective film is a functional optical film.
10. The electronic device of claim 2, wherein the functional area corresponding to the camera module is an area of the display area corresponding to a range of a lens of the camera module and capable of effectively sensing light to further complete a photographing operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010740785.1A CN111897041A (en) | 2020-07-29 | 2020-07-29 | Polarizing plate and electronic device comprising same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010740785.1A CN111897041A (en) | 2020-07-29 | 2020-07-29 | Polarizing plate and electronic device comprising same |
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| CN111897041A true CN111897041A (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061273A (en) * | 2021-03-10 | 2021-07-02 | 西南科技大学 | Preparation method of high-performance polaroid |
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Application publication date: 20201106 |