CN105988154B - Circular polarizing plate and AMOLED display device with same - Google Patents
Circular polarizing plate and AMOLED display device with same Download PDFInfo
- Publication number
- CN105988154B CN105988154B CN201510086510.XA CN201510086510A CN105988154B CN 105988154 B CN105988154 B CN 105988154B CN 201510086510 A CN201510086510 A CN 201510086510A CN 105988154 B CN105988154 B CN 105988154B
- Authority
- CN
- China
- Prior art keywords
- layer
- polarizing plate
- film
- sensitive adhesive
- display device
- 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.)
- Active
Links
Images
Abstract
The invention discloses a circular polarizing plate, comprising: the polarizing layer is provided with a first surface and a second surface opposite to the first surface; sequentially forming a first protective film and a hardening layer on the first surface; a second protective film, a first pressure-sensitive adhesive layer, a phase difference film layer and a second pressure-sensitive adhesive layer are sequentially formed on the second surface; and a protective layer for absorbing ultraviolet light is formed between the hardening layer and the first protective film layer. The invention provides a circular polarizing plate with a novel structure, which effectively cuts off ultraviolet light by using a cerium dioxide-silicon dioxide film added in the circular polarizing plate, and reduces the energy of the ultraviolet light reaching an organic light-emitting layer, thereby protecting the organic light-emitting layer, avoiding the defect that a display device has uneven brightness, and achieving the purposes of improving the product quality and prolonging the product life.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a circular polarizing plate and an AMOLED display device having the same.
Background
Compared with the conventional liquid crystal display panel, an Active Matrix Organic Light Emitting Diode (AMOLED) has many advantages as a new generation of display device: the display device has the advantages of high reaction speed, high contrast ratio, wide viewing angle, excellent display effect, low power consumption and the like. The method has wide application prospect in the fields of mobile phones, digital cameras, vehicle-mounted displays, notebook computers, military affairs and the like.
In the application process of the amloop, the TP (touch panel) and the polarizer do not cut off UV 100%, and a part of UV residual may penetrate POL and ENCAP to enter the OLED organic layer, which may cause a change in the characteristics of the organic film layer, resulting in Mura (Mura refers to a phenomenon in which the brightness of the display is not uniform, causing various traces) on the screen, or a reduction in the display effect and the lifetime.
In view of the above problems, currently, the polarizer mainly depends on doping the TAC layer with an ultraviolet absorber to reduce the transmittance of ultraviolet and blue-violet light, but this solution has two problems:
1. the PVA (polarizing layer) layer is an important component for converting natural light into linear polarization, the polarization photons (I ions) inside the PVA layer are stretched and formed, the TAC material is an important component for protecting the PVA, the doping of the ultraviolet absorption material can influence the protection function of the TAC, and the polarization degree and the service life of the linear polarizing plate are reduced.
2. The material absorbs deep blue light and ultraviolet light, the absorption is insufficient, and partial high-energy ultraviolet allowance invades the organic layer to influence the light emission of the sub-pixels.
Disclosure of Invention
In view of the above, the present invention provides a novel circular polarizing plate to solve the above technical problems.
Another objective of the present invention is to provide an AMOLED display device having the circular polarizing plate to solve the above technical problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a circularly polarizing plate comprising:
the polarizing layer is provided with a first surface and a second surface opposite to the first surface;
sequentially forming a first protective film and a hardening layer on the first surface;
a second protective film, a first pressure-sensitive adhesive layer, a phase difference film layer and a second pressure-sensitive adhesive layer are sequentially formed on the second surface;
and a protective layer for absorbing ultraviolet light is formed between the hardening layer and the first protective film layer.
As a further improvement of the circular polarizing plate of the present invention, the protective layer is a ceria-silica thin film.
As a further improvement of the circular polarizer of the invention, the thickness of the cerium oxide-silicon dioxide film is 300nm to 700 nm.
As a further improvement of the circular polarizing plate of the present invention, the first protective film layer is a cellulose triacetate film.
As a further improvement of the circular polarizing plate of the present invention, the second protective film is a zero retardation film.
As a further improvement of the circular polarizing plate of the present invention, the retardation film layer is a film-like quarter-wave plate.
As a further improvement of the circular polarizing plate of the present invention, a release layer film for protecting the second pressure-sensitive adhesive layer is formed on a surface of the second pressure-sensitive adhesive layer opposite to the phase difference film layer.
In order to achieve the above another object, the present invention adopts the following technical solutions:
an AMOLED display device, comprising:
a substrate;
an organic light emitting layer disposed on the substrate;
an encapsulation substrate disposed on the organic light emitting layer; and
the circularly polarizing plate of any one of the above embodiments disposed on the package substrate.
As an improvement of the AMOLED display device of the present invention, the AMOLED display device further includes a touch panel covered with an optical adhesive on the circular polarizing plate.
As an improvement of the AMOLED display device, the substrate is a low-temperature polysilicon thin film transistor array substrate.
The invention has the beneficial effects that the cerium dioxide-silicon dioxide film added in the circular polarizing plate with a novel structure is utilized to effectively cut off ultraviolet light to a high degree and reduce the energy of the ultraviolet light reaching the organic light-emitting layer, so that the organic light-emitting layer is protected, the defect that the display device has uneven brightness is avoided, and the purposes of improving the product quality and prolonging the product service life are achieved.
Drawings
FIG. 1 is a schematic cross-sectional view of a circular polarizer structure according to the present invention; and
fig. 2 is a schematic cross-sectional view of an AMOLED display device according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a circular polarization plate structure according to the present invention. The scheme of the invention coats a protective layer 7 on the first protective film 6 for protecting the polarizing layer 5, so that ultraviolet light can be absorbed to protect the organic light-emitting layer 22 in the AMOLED. Specifically, circular polarizing plate 10 of the present invention includes: the circularly polarizing plate comprises a second pressure sensitive adhesive 1 layer, a retardation film layer (retardation film)2, a first pressure sensitive adhesive 3 layer, a second protective film 4, a polarizing layer 5, a first protective film 6 and a hardening layer (Hard-Coating) 8, and particularly, a protective layer 7 for absorbing ultraviolet light is additionally arranged between the hardening layer 8 and the first protective film 6 layer, so that more than 99% of UV light can be cut off, the damage of the UV light on the polarizing layer 5 of a linearly polarizing component of the circularly polarizing plate 10 is reduced, the circularly polarizing plate 10 is protected, and the service life of a product is prolonged.
In the present embodiment, the polarizing layer 5 has a first surface 51 and a second surface 53 opposite to the first surface 51, the first protective film 6, the protective layer 7, and the cured layer 8 are sequentially formed on the first surface 51 of the polarizing layer 5, the second protective film 4, the first pressure-sensitive adhesive layer 3, the phase difference film layer 2, and the second pressure-sensitive adhesive layer 1 are sequentially formed on the second surface 53 of the polarizing layer 5, and the protective layer 7 for absorbing ultraviolet light is formed between the cured layer 8 and the first protective film 6. In detail, the polarizing layer 5 in the present invention uses a polyvinyl alcohol (PVA) material, and the polarizing layer 5 converts natural light into linearly polarized light. Preferably, in the embodiment of the present invention, the protective layer 7 is a ceria-silica film having a thickness of 300nm to 700nm, and particularly, the ratio of ceria to silica components in the ceria-silica film is approximately 1: 1. The cerium dioxide-silicon dioxide film has the advantages of high visible light transmission, high ultraviolet light cutoff and the like, the refractive index of the cerium dioxide-silicon dioxide film is close to that of adjacent layers of materials in the polarizing plate, so that the practical problem can not be caused, and in addition, the thickness of the cerium dioxide-silicon dioxide film is 300nm to 700nm, and the film is very thin, so that the thickness of the polarizing plate can not be greatly influenced.
Further, the hardened layer 8 serves to protect the polarizing plate. The first protective film 6 of the present invention is a Triacetyl Cellulose (TAC) film for protecting the polarizing layer 5. The second protective film 4 is a zero phase difference film layer and is also used for protecting the polarizing layer 5. In the embodiment of the present invention, the retardation film layer 2 preferably uses a film-like quarter-wave plate to convert linearly polarized light into circularly polarized light. In the present invention, the first pressure-sensitive adhesive 3 layer and the second pressure-sensitive adhesive 1 layer are both made of a pressure-sensitive adhesive (PSA) of the acrylic system, which is a type of pressure-sensitive adhesive.
In particular, in order to protect the exposed second pressure sensitive adhesive 1 layer, a release layer film (not shown) for protecting the second pressure sensitive adhesive 1 layer is formed on the surface of the second pressure sensitive adhesive 1 layer opposite to the retardation film. Correspondingly, in order to protect the exposed hardened layer 8, a protective film (not shown) is coated on the surface of the hardened layer 8 opposite to the first protective film 6. However, when the circular polarizing plate 10 is used to attach to an AMOLED display device, both the release layer film and the protective film need to be removed.
As shown in fig. 2, the circular polarizing plate 10 of the present invention is applied to an AMOLED display device to convert natural light without polarization into polarized light, so that light perpendicular to an electric field passes through the circular polarizing plate, and the display device can normally display images. Specifically, the AMOLED display device of the present invention includes: a substrate 21; an organic light emitting layer 22 disposed on the substrate 21; an encapsulation substrate 23 disposed on the organic light emitting layer 22; and the circular polarizing plate 10 as described above disposed on the package substrate 23; the organic light emitting layer 22 includes a red sub-pixel, a blue sub-pixel, and a green sub-pixel or other sub-pixels. Particularly, the AMOLED display device further includes a touch panel 25 covered on the circular polarizing plate 10 by an optical Adhesive 24 (OCA), where the optical Adhesive 24 is used for bonding materials on the touch panel 25, and has the advantages of high clarity, high light transmittance (total light transmittance > 99%), high adhesion, high weather resistance, water resistance, high temperature resistance, and ultraviolet resistance, and the problems of yellowing (yellowing), peeling and deterioration do not occur after long-term use. In the present invention, the substrate 21 is a low temperature polysilicon thin film transistor array substrate.
The invention provides a circular polarizing plate with a novel structure, which effectively cuts off more than 99% of ultraviolet light by using a cerium dioxide-silicon dioxide film added in the circular polarizing plate, lightens the damage of the ultraviolet light to a polarizing layer of a linear polarizing component of the polarizing plate, and reduces the energy of the ultraviolet light reaching an organic light-emitting layer, thereby protecting the organic light-emitting layer, avoiding the defect that a display device generates uneven brightness, and achieving the purposes of improving the product quality and prolonging the product service life.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A circularly polarizing plate, comprising:
the polarizing layer is provided with a first surface and a second surface opposite to the first surface;
sequentially forming a first protective film and a hardening layer on the first surface;
a second protective film, a first pressure-sensitive adhesive layer, a phase difference film layer and a second pressure-sensitive adhesive layer are sequentially formed on the second surface;
and a protective layer for absorbing ultraviolet light is formed between the hardening layer and the first protective film layer.
2. The circularly polarizing plate of claim 1, wherein the protective layer is a ceria-silica thin film.
3. The circular polarizing plate of claim 2, wherein the ceria-silica thin film has a thickness of 300nm to 700 nm.
4. The circularly polarizing plate of claim 1, wherein the first protective film is a cellulose triacetate film.
5. The circularly polarizing plate of claim 1, wherein the second protective film is a retardation value zero film.
6. The circularly polarizing plate of claim 1, wherein the retardation film layer is a film-like quarter-wave plate.
7. The circularly polarizing plate of claim 1, wherein a release layer film for protecting the second pressure sensitive adhesive layer is formed on a surface of the second pressure sensitive adhesive layer opposite to the retardation film layer.
8. An AMOLED display device, comprising:
a substrate;
an organic light emitting layer disposed on the substrate;
an encapsulation substrate disposed on the organic light emitting layer; and
the circularly polarizing plate of any one of claims 1 to 7 disposed on the package substrate.
9. The AMOLED display device as recited in claim 8, further comprising a touch panel coated with an optical glue on the circular polarizer.
10. The AMOLED display device as recited in claim 8, wherein the substrate is a low temperature polysilicon thin film transistor array substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086510.XA CN105988154B (en) | 2015-02-17 | 2015-02-17 | Circular polarizing plate and AMOLED display device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510086510.XA CN105988154B (en) | 2015-02-17 | 2015-02-17 | Circular polarizing plate and AMOLED display device with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105988154A CN105988154A (en) | 2016-10-05 |
| CN105988154B true CN105988154B (en) | 2020-01-10 |
Family
ID=57038401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510086510.XA Active CN105988154B (en) | 2015-02-17 | 2015-02-17 | Circular polarizing plate and AMOLED display device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105988154B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599415A (en) * | 2017-09-30 | 2019-04-09 | 上海和辉光电有限公司 | A kind of AMOLED display screen and terminal |
| CN109148722B (en) | 2018-08-28 | 2020-05-08 | 京东方科技集团股份有限公司 | Organic light-emitting display panel, manufacturing method thereof and display device |
| CN109991793A (en) * | 2019-03-13 | 2019-07-09 | 武汉华星光电半导体显示技术有限公司 | A kind of display device being built-in with lens module |
| US11106071B2 (en) | 2019-03-13 | 2021-08-31 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display device having a built-in lens module |
| JP7438766B2 (en) * | 2019-04-25 | 2024-02-27 | 恵和株式会社 | Protective film for OLED displays with fingerprint authentication device |
| CN113156696A (en) * | 2021-04-14 | 2021-07-23 | 武汉华星光电半导体显示技术有限公司 | Display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400939A (en) * | 2000-02-11 | 2003-03-05 | 丹格乐斯技术有限公司 | Antireflective UV blocking multilayer coatings wherin film has cerium oxide |
| CN101131964A (en) * | 2006-08-25 | 2008-02-27 | 中华映管股份有限公司 | Manufacturing method for thin-film transistor array substrate |
| CN101414023A (en) * | 2007-10-19 | 2009-04-22 | 奇美电子股份有限公司 | Liquid crystal compensation polarized light plate, double-optical axis compensation film and display apparatus and optical range compensating method thereof |
| CN102955191A (en) * | 2012-10-12 | 2013-03-06 | 华映视讯（吴江）有限公司 | Polarizer as well as touch control liquid crystal panel and touch control display of polarizer |
| CN102967979A (en) * | 2012-11-29 | 2013-03-13 | 昆山工研院新型平板显示技术中心有限公司 | Active matrix display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110108697A (en) * | 2010-03-29 | 2011-10-06 | 삼성전자주식회사 | Polarizer for organic electro luminescence device and oled including the same |
| US9612378B2 (en) * | 2010-12-31 | 2017-04-04 | Cheil Industries, Inc. | Folder type polarizing film for organic light emitting diode |
| CN203589036U (en) * | 2013-08-20 | 2014-05-07 | 昆山国显光电有限公司 | Organic lighting display |
| CN103647027B (en) * | 2013-12-10 | 2016-01-06 | 京东方科技集团股份有限公司 | A kind of multi-functional encapsulating film and display unit |
-
2015
- 2015-02-17 CN CN201510086510.XA patent/CN105988154B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1400939A (en) * | 2000-02-11 | 2003-03-05 | 丹格乐斯技术有限公司 | Antireflective UV blocking multilayer coatings wherin film has cerium oxide |
| CN101131964A (en) * | 2006-08-25 | 2008-02-27 | 中华映管股份有限公司 | Manufacturing method for thin-film transistor array substrate |
| CN101414023A (en) * | 2007-10-19 | 2009-04-22 | 奇美电子股份有限公司 | Liquid crystal compensation polarized light plate, double-optical axis compensation film and display apparatus and optical range compensating method thereof |
| CN102955191A (en) * | 2012-10-12 | 2013-03-06 | 华映视讯（吴江）有限公司 | Polarizer as well as touch control liquid crystal panel and touch control display of polarizer |
| CN102967979A (en) * | 2012-11-29 | 2013-03-13 | 昆山工研院新型平板显示技术中心有限公司 | Active matrix display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105988154A (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105988154B (en) | Circular polarizing plate and AMOLED display device with same | |
| US10192939B2 (en) | Display device and fabrication method thereof | |
| US9395471B2 (en) | Display device | |
| KR102113568B1 (en) | Polarizing plate, image display device, and method for improving light-place contrast in image display device | |
| KR102307157B1 (en) | Polarizing plate, image display device, and improvement method of photopic contrast in image display device | |
| JP7459868B2 (en) | Antireflection circularly polarizing plate and image display device using the same | |
| KR20160002410A (en) | Integrated Circular Polarizing Plate, Preparing Method for the Same and Organic Light Emitting Display Device Comprising the Same | |
| JP2004042653A (en) | Hard coat film | |
| CN106023822B (en) | OLED display device and manufacturing method thereof | |
| JP6172302B2 (en) | Polarizing plate, liquid crystal panel, and liquid crystal display device | |
| KR20060103114A (en) | Polarizing plate with adhesive and liquid crystal display | |
| KR20140061136A (en) | Flexible display device | |
| KR20170048656A (en) | Flexible display apparatus | |
| TW201446531A (en) | Window for display device and display device including the window | |
| JP2013137551A (en) | Polarizing plate and liquid crystal display device | |
| CN112946949A (en) | Polarizing plate, display panel and preparation method thereof | |
| JP2006011409A (en) | Polarizing plate and liquid crystal display | |
| US20130170173A1 (en) | Display device and optical multi-layer structure for display device | |
| JP2004020830A (en) | Polarizer, polarizing plate and picture display device | |
| KR101946859B1 (en) | Flexible display device and method of fabricating the same | |
| JP6412195B1 (en) | Image display device | |
| US20210402722A1 (en) | Method for manufacturing polarizing plate | |
| CN209992778U (en) | Liquid crystal display device | |
| TW201805664A (en) | Optical member and liquid crystal display device | |
| CN109346622A (en) | OLED array and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 1568 Jiugong Road, Jinshan Industrial Zone, Jinshan District, Shanghai, 201506 Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201508, building two, building 100, 1, Jinshan Industrial Road, 208, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |