CN112835141A - Polaroid and flexible foldable display panel device - Google Patents
Polaroid and flexible foldable display panel device Download PDFInfo
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- CN112835141A CN112835141A CN202110181724.0A CN202110181724A CN112835141A CN 112835141 A CN112835141 A CN 112835141A CN 202110181724 A CN202110181724 A CN 202110181724A CN 112835141 A CN112835141 A CN 112835141A
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- polarizer
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- 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
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application discloses a polarizer, which comprises a first protective layer, a linear polarization layer and a second protective layer which are sequentially stacked, wherein a shading layer is arranged on one side of the linear polarization layer, which is far away from the second protective layer; the shading layer is positioned between the first protection layer and the line deflection layer, and one side surface, away from the line deflection layer, of the first protection layer is a flat surface; the light shielding layer is located at the edge of the line deviation layer. The present application further provides a flexible and foldable display panel device. The application provides a polaroid at non-display area printing light shield layer, among the flexible collapsible display panel device is applied to the polaroid, the phenomenon of deformation all around, swell, bubble that can avoid flexible apron and display panel to cause when laminating.
Description
Technical Field
The application relates to the technical field of display, in particular to a polarizer and a flexible foldable display panel device.
Background
The smart phone terminal is developed to the present, and has various forms, such as a very frame, a waterfall screen, a camera under the screen, and a foldable form. The foldable mobile phone has a very wide market prospect due to the combination of the characteristics of the tablet and the mobile phone and the differentiated selling points.
The flexible panel is developed on the basis of an OLED (Organic Light Emitting Diode) technology, and the Light Emitting principle thereof is as follows: under the drive of an external direct-current low-voltage high-electric-field signal, holes and electrons in the display panel are respectively injected from the anode and the cathode and then migrate into the organic light-emitting layer to meet to form excitons, the excitons transfer energy to the organic light-emitting molecules under the action of an electric field and excite electrons in the organic molecules to transition from a ground state to an excited state, and then the electrons in the organic molecules radiate and transition from the excited state to the ground state, so that the energy is released in the form of photons, and the electroluminescence of the organic light-emitting material is realized.
Fig. 1 is a schematic stacked view of a conventional flexible and foldable display Panel device, which is composed of a flexible and foldable cover plate (CW/UTG)40', a transparent optical adhesive (OCA)30', a Polarizer (POL)10', a display Panel (Panel)20', a back plate film (BP)50', and a heat dissipation composite (SCF) 60'; the polarizer 10' is composed of a first protective layer 11' (TAC), a linear polarizer 12' (PVA), a second protective layer 13' (COP), a first pressure-sensitive adhesive 15' (PSA), a phase retarder 16' (regenerator), and a second pressure-sensitive adhesive 17' (PSA). As shown in fig. 1, an active area (active area) of the display panel is a pixel area or a display area AA, providing a display function; the area outside the display area is the driving circuit winding area, which cannot be displayed and is the non-display area NA. As shown in fig. 1, in the flexible foldable display panel device, a flexible Cover (CW) or an ultra-thin glass cover (UTG) serves to protect the display screen; meanwhile, a layer of ink 14' is printed on the periphery of CW/UTG to shield the routing area (i.e., the non-display area NA) of the driving circuit outside the display area AA of the display panel 20', so as to prevent the metal driving circuit in the non-display area NA of the display panel 20' from being visible and affecting the appearance of the whole display. However, since the ink layer 14 'is printed after the CW/UTG is manufactured, and the thickness of the ink layer 14' is about 10 to 20um, a step, i.e. an ink break, is formed, as shown in fig. 2, fig. 2 is a schematic structural diagram of the ink layer 14 'before the first protection layer 11' in fig. 1 is attached. For the folding requirement, the flexible foldable cover 40' has a small thickness and low hardness, so that the existence of the break may cause defects such as deformation, bulge, bubbles, etc. around the flexible foldable cover 40' and the display panel 20' when they are attached, which may seriously affect the appearance and yield of the product.
Therefore, it is desirable to provide a polarizer and a flexible foldable display panel device to improve the technical problems of peripheral deformation, bulging and bubbles caused by ink break when the flexible foldable cover plate is attached to the display panel.
Disclosure of Invention
The embodiment of the application provides a polaroid of printing light shield layer on polaroid non-display area, will the polaroid is applied to the reducible folding cell-phone flexible cover board in back among the flexible collapsible display panel device and produces bad techniques such as deformation when laminating with OLED module material.
The embodiment of the application provides a polarizer, which comprises a first protective layer, a linear polarization layer and a second protective layer which are sequentially stacked, wherein a shading layer is arranged on one side of the linear polarization layer, which is far away from the second protective layer; the shading layer is positioned between the first protection layer and the line deflection layer, and one side surface, away from the line deflection layer, of the first protection layer is a flat surface; the light shielding layer is located at the edge of the line deviation layer.
In some embodiments, the polarizer further comprises a phase retarder (retarder) coupled to the second protective layer by a first Pressure Sensitive Adhesive (PSA).
In some embodiments, the first protective layer is a triacetate cellulose film (TAC film) or COP film.
In some embodiments, the second protective layer is a triacetate cellulose film (TAC film) or COP film.
In some embodiments, the Optical Density (OD) value of the material of the light shielding layer is greater than or equal to 4.5 to ensure good light shielding.
In some embodiments, the light shielding layer has a thickness of 8-20 um.
In some embodiments, the light shielding layer has a color consistent with a color of the polarizer.
The embodiment of the application also provides a flexible foldable display panel device, which comprises a display panel, wherein the display panel is provided with a display area and a non-display area, the flexible foldable display panel device comprises a flexible foldable cover plate (CW/UTG), transparent optical adhesive (OCA) and the polarizer, the transparent optical adhesive and the flexible foldable cover plate are sequentially arranged on the display panel;
the light shielding layer in the polarizer is arranged in the non-display area and used for blocking light from transmitting.
In some embodiments, the polarizer is attached to the display panel by a second Pressure Sensitive Adhesive (PSA).
In some embodiments, the flexible and foldable display panel device further comprises: a back panel film (BP) and a heat dissipating composite (SCF) disposed in sequence under the display panel.
In some embodiments, the abutting surface of the flexible foldable cover plate and the transparent optical cement is a flat surface.
The beneficial effect of this application lies in:
the application provides a polarizer, which mainly comprises a first protective layer, a line deflection layer and a second protective layer, wherein a light shielding layer is printed on the edge of the line deflection layer, the light shielding layer is positioned between the first protective layer and the line deflection layer, and the upper surface of the line deflection layer is a flat surface; and the shading layer is positioned in the non-display area and used for shading light. The polaroid is applied to the flexible foldable display panel device, and the poor phenomena of peripheral deformation, bulging, bubbles and the like caused by the ink offset formed by printing ink of the flexible foldable cover plate with thin thickness and low hardness in the laminating process can be improved. The flexible foldable display panel device provided by the application can be applied to a foldable mobile phone terminal.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a conventional flexible and foldable display panel device.
Fig. 2 is a schematic structural view of the ink layer before the first protective layer in fig. 1 is attached.
Fig. 3 is a schematic structural diagram of a polarizer provided in an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a flexible and foldable display panel device according to an embodiment of the present application.
Description of reference numerals:
10. a polarizer; 11. A first protective layer;
12. a line bias layer; 13. A second protective layer;
14. a light-shielding layer; 15. A first pressure sensitive adhesive;
16. a phase retarder; 17. A second pressure sensitive adhesive;
20. a display panel; 30. Transparent optical cement;
40. a flexible foldable cover; 50. A backsheet film;
60. a heat dissipating composite; 100. A flexible foldable display panel device;
AA. A display area; NA, non-display area.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In this application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to upper and lower portions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings.
The present application is further described with reference to the following drawings and specific examples:
referring to fig. 3, fig. 3 is a schematic structural diagram of a polarizer according to an embodiment of the present disclosure. The embodiment of the application provides a polarizer 10, which comprises a first protective layer 11, a linear polarization layer 12(PVA) and a second protective layer 13 which are sequentially stacked. A light shielding layer 14 is arranged on the side of the linear polarization layer 12, which is far away from the second protection layer 13.
In the present embodiment, referring to fig. 3, the light shielding layer 14 is located between the first protective layer 11 and the line bias layer 12; for example, the thickness of the light-shielding layer 14 is 8 to 20um, preferably 10 um. Moreover, a side of the first protection layer 11 away from the line bias layer 12 is a flat surface, that is, an upper surface of the first protection layer 11 is a flat surface, as shown in fig. 3.
In this embodiment, the first protection layer 11 and the second protection layer 13 both protect the line bias layer 12 layer from corrosion of the external environment. The first protective layer 11 is a TAC film or a COP film; the second protective layer 13 is a TAC film or a COP film. For example, the first protective layer 11 is a TAC film, and the second protective layer 13 is a COP film.
In this embodiment, the linear polarization layer 12 is linear polarization and only allows light parallel to the linear polarization axis to pass through.
In this embodiment, the light-shielding layer 14 is a light-shielding layer for blocking light from passing through. Further, the Optical Density (OD) value of the material of the light shielding layer 14 is 4.5 or more to ensure good light shielding property. In addition, the color of the light shielding layer 14 is consistent with the color of the polarizer 10, so as to achieve a better integral black effect. For example, the material of the light-shielding layer 14 may be resin or black pigment.
The polarizer 10 further includes a phase retarder 16 (retarder), and the phase retarder 16 is connected to the second protective layer 13 through a first pressure sensitive adhesive 15 (PSA). Wherein, the first pressure-sensitive adhesive 15 is a glue layer and has an adhesive effect; the phase retarder 16 is an 1/2 wavelength wave plate, and converts linearly polarized light into circularly polarized light.
In the present application, the polarizer 10 further includes a second pressure sensitive adhesive 17 for adhering the polarizer 10 to a display panel.
Further, with reference to fig. 3, the light shielding layer 14 is located at the edge of the line bias layer 12. When the polarizer 10 is applied to a display panel, the light shielding layer 14 is located in the non-display area NA of the display panel. For example, in practical applications, the area of the polarizer 10 to be printed with the light shielding layer 14 (e.g., Ink (Ink)) can be calculated through the non-display area NA of the display panel and the tolerance of the polarizer 10 to the display panel.
During the preparation of the polarizer 10, the light shielding layer 14 is printed on the linearly polarized layer 12, and then the first protective layer 11 is coated on the linearly polarized layer 12, and the first protective layer 11 is coated on the light shielding layer 14 (for example, the thickness is about 20 um); the first protection layer 11 is a transparent layer, so that the linear polarization layer 12 and the light shielding layer 14 can be protected on the premise of ensuring light transmission, and after coating is completed, the upper surface of the polarizer 10 is a flat surface without a break. At this time, the light-shielding layer 14 is bonded to the first protective layer 11 without a step.
Please refer to fig. 4, which is a schematic structural diagram of a flexible and foldable display panel device according to an embodiment of the present disclosure. The embodiment of the present application further provides a flexible and foldable display panel device 100 having a display area AA and a non-display area NA. The flexible and foldable display panel device 100 includes a flexible and foldable cover (CW/UTG)40, a transparent optical adhesive (OCA)30, a display panel 20, and the polarizer 10, the transparent optical adhesive 30, and the flexible and foldable cover 40 are sequentially disposed on the display panel 20.
In this embodiment, the flexible foldable cover 40(CW/UTG) can protect the display module against scratches and external impacts. Transparent optical cement 30(OCA) can adopt acrylic to glue material or silica gel, bonds the module material under the circumstances of guaranteeing the light transmittance, can absorb impact energy. The polarizer 10(POL) may reduce the influence of external ambient light on the display panel. The display panel 20 provides a display function. The back sheet film 50 may protect the display panel 20. The heat dissipation composite 60 has the functions of heat dissipation, electromagnetic shielding and protection of the display panel 20.
In this embodiment, the light-shielding layer 14 in the polarizer 10 is disposed in the non-display area NA to block light from passing through.
In this embodiment, a second pressure sensitive adhesive 17 is disposed between the retarder 16 and the display panel 20. That is, with reference to fig. 4, the polarizer 10 is connected to the display panel 20 through a second pressure sensitive adhesive 17(PSA) for attaching the polarizer 10 to the display panel 20. Specifically, the second pressure-sensitive adhesive 17 is a glue layer and plays a role of adhesion.
The flexible and foldable display panel device 100 further includes: a back sheet film 50(BP) and a heat dissipating composite 60(SCF) disposed in this order under the display panel 20.
In the present application, the attaching surface of the flexible foldable cover plate 40 and the transparent optical cement 30 is a flat surface; that is, the lower surface of the flexible foldable cover 40 is a flat surface, so that the phenomena of deformation, bulge, air bubbles and the like caused by a break difference during the attaching process are avoided.
The display panel device of the present application is compared with the existing one as follows: according to the conventional display panel device 100' shown in fig. 1, a joint surface between the flexible foldable cover 40' and the transparent optical adhesive 30' has a step, and the flexible foldable cover 40' is manufactured by the ink layer 14', so that defects such as peripheral deformation, swelling, bubbles and the like exist when the flexible foldable cover 40' is jointed with the display panel 20 '; however, in the present application, since the light shielding layer 14 is located in the polarizer 10, the light shielding layer (e.g., ink) does not need to be printed on the flexible foldable cover 40, and after the light shielding layer is broken, the attaching surface of the flexible foldable cover 40 and the transparent optical adhesive 30 is a flat surface, that is, the lower surface of the flexible foldable cover 40 is a flat surface. Therefore, the display panel device can improve the poor phenomena of peripheral deformation, bulging, air bubbles and the like of the flexible foldable cover plate with small thickness and low hardness during the attaching process due to the ink break difference formed by the printing ink.
In summary, the present application provides a design scheme for a polarizer that prints ink on a non-display area of the polarizer. The polarizer is applied to a flexible foldable display panel device, and the technology can reduce the defects of deformation and the like generated when the flexible cover plate of the foldable mobile phone is attached to an OLED module material. The method and the device can be applied to the foldable mobile phone terminal.
The polarizer and the flexible foldable display panel device provided in the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are described herein by applying specific examples, and the description of the above embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A polarizer comprises a first protective layer, a linear polarization layer and a second protective layer which are sequentially stacked, and is characterized in that a light shielding layer is arranged on one side of the linear polarization layer, which is far away from the second protective layer;
the light shielding layer is positioned between the first protective layer and the line deflection layer, and the light shielding layer is positioned at the edge of the line deflection layer;
one side of the first protective layer, which is far away from the line bias layer, is a flat surface.
2. The polarizer of claim 1, further comprising a phase retarder, wherein the phase retarder is connected to the second protective layer by a first pressure sensitive adhesive.
3. The polarizer according to claim 1, wherein the first protective layer and/or the second protective layer is a TAC film or a COP film.
4. The polarizer according to claim 1, wherein the light-shielding layer has a material having an optical density value of 4.5 or more to ensure good light-shielding property.
5. The polarizer according to claim 1, wherein the light-shielding layer has a thickness of 8 to 12 um.
6. The polarizer of claim 1, wherein the color of the light-shielding layer is identical to the color of the polarizer.
7. A flexible foldable display panel device comprising a display panel having a display region and a non-display region, wherein the flexible foldable display panel device comprises a flexible foldable cover plate, a transparent optical cement and the polarizer of any one of claims 1 to 6, and the polarizer, the transparent optical cement and the flexible foldable cover plate are sequentially disposed on the display panel;
the light shielding layer in the polarizer is arranged in the non-display area and used for blocking light from transmitting.
8. The flexible and foldable display panel device of claim 7, wherein the polarizer is attached to the display panel by a second pressure sensitive adhesive.
9. The flexible and foldable display panel device of claim 7, further comprising: and the back panel film and the heat dissipation composite material are sequentially arranged below the display panel.
10. The flexible and foldable display panel device of claim 7, wherein a surface of the flexible and foldable cover plate that is attached to the transparent optical adhesive is a flat surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181724.0A CN112835141A (en) | 2021-02-08 | 2021-02-08 | Polaroid and flexible foldable display panel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181724.0A CN112835141A (en) | 2021-02-08 | 2021-02-08 | Polaroid and flexible foldable display panel device |
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| Publication Number | Publication Date |
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| CN112835141A true CN112835141A (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110181724.0A Pending CN112835141A (en) | 2021-02-08 | 2021-02-08 | Polaroid and flexible foldable display panel device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745430A (en) * | 2021-08-27 | 2021-12-03 | 武汉华星光电半导体显示技术有限公司 | Display module and preparation method thereof |
| CN115275043A (en) * | 2022-07-18 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
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| CN103513318A (en) * | 2012-06-20 | 2014-01-15 | 三星显示有限公司 | Polarization structure, method of manufacturing polarization structure and display device including polarization structure |
| CN109782385A (en) * | 2019-03-27 | 2019-05-21 | 京东方科技集团股份有限公司 | Polaroid and preparation method thereof, display panel, display device |
| CN209842283U (en) * | 2018-11-14 | 2019-12-24 | 惠科股份有限公司 | Display panel and display device |
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2021
- 2021-02-08 CN CN202110181724.0A patent/CN112835141A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513318A (en) * | 2012-06-20 | 2014-01-15 | 三星显示有限公司 | Polarization structure, method of manufacturing polarization structure and display device including polarization structure |
| CN209842283U (en) * | 2018-11-14 | 2019-12-24 | 惠科股份有限公司 | Display panel and display device |
| CN109782385A (en) * | 2019-03-27 | 2019-05-21 | 京东方科技集团股份有限公司 | Polaroid and preparation method thereof, display panel, display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745430A (en) * | 2021-08-27 | 2021-12-03 | 武汉华星光电半导体显示技术有限公司 | Display module and preparation method thereof |
| CN115275043A (en) * | 2022-07-18 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | Display device and manufacturing method thereof |
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Application publication date: 20210525 |