CN111323852A - Composite optical film and backlight module - Google Patents
Composite optical film and backlight module Download PDFInfo
- Publication number
- CN111323852A CN111323852A CN201811534428.9A CN201811534428A CN111323852A CN 111323852 A CN111323852 A CN 111323852A CN 201811534428 A CN201811534428 A CN 201811534428A CN 111323852 A CN111323852 A CN 111323852A
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- China
- Prior art keywords
- composite optical
- lens
- layer
- light
- optical film
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Abstract
The invention discloses a composite optical diaphragm and a backlight module, which comprise a diaphragm substrate and a micro-lens layer arranged above the diaphragm substrate, wherein the micro-lens layer comprises a lens base material arranged on the diaphragm substrate, and a first lens structure and a second lens structure which are formed on the lens base material, the first lens structure and the second lens structure are arranged at intervals in a matrix, and the heights of the first lens structure and the second lens structure are different. The invention also provides a backlight module with the composite optical film. According to the composite optical membrane and the backlight module, the lens structures with different heights are arranged, so that the contact area of the composite optical membrane and the display module or other membranes can be effectively reduced, the phenomena of electrostatic adsorption and interference generated on the contact surface can be effectively reduced along with the reduction of the contact area, and the optical quality of the composite optical membrane is further improved.
Description
Technical Field
The invention relates to the field of backlight of display devices, in particular to a composite optical film and a backlight module with the same.
Background
Human activities are aggravated, global climate is warmed, climate changes are aggravated, and the demand for display devices to resist climate changes is higher on a global basis. Reducing the number of LEDs and increasing the gain coefficient of the optical film are the necessary ways for each display device under the requirements of energy conservation and emission reduction. In order to increase the gain coefficient of the optical film, a gain film is often added to the optical film. However, the optical film with the design usually has the problems of electrostatic adsorption and interference, so that the optical quality of the optical film is difficult to improve.
Disclosure of Invention
In view of the defects of the prior art, the invention provides the composite optical film for solving the defects of the prior art, and the optical quality of the composite optical film can be effectively improved.
A composite optical diaphragm comprises a diaphragm substrate and a micro-lens layer arranged above the diaphragm substrate, wherein the micro-lens layer comprises a lens base material arranged on the diaphragm substrate, a first lens structure and a second lens structure, the first lens structure and the second lens structure are formed on the lens base material, the first lens structure and the second lens structure are arranged at intervals in a matrix mode, and the first lens structure and the second lens structure are different in height.
The first lens structure and the second lens structure are both hemispherical or quasi-hemispherical structures.
Wherein, the micro-lens layer is formed by adopting an embossing process.
The composite optical membrane further comprises a light emitting layer which is arranged below the micro-lens layer in a sealing mode and emits red light and green light under the excitation of blue light.
Wherein the light emitting layer is a quantum dot layer or a fluorescent layer.
The light-emitting layer is an adhesive layer formed by mixing an optical material capable of exciting red light and an optical material capable of exciting green light.
The light-emitting layer is an adhesive layer formed by mixing an optical material capable of exciting red light, an optical material capable of exciting green light and an optical material capable of exciting blue light.
The film substrate is divided into two independent layers, and the light emitting layer is hermetically clamped between the two independent layers of film substrates.
Wherein, diffusion particles are arranged below the bottom of the film base.
The invention also provides a backlight module which comprises a light source, a light guide plate and the composite optical membrane arranged above the light guide plate, wherein the light source is a blue light source, and the optical composite membrane is the composite optical membrane.
Compared with the prior art, the composite optical membrane and the backlight module can effectively reduce the contact area of the composite optical membrane and a display module or other membranes by arranging the lens structures with different heights, and can effectively reduce the phenomena of electrostatic adsorption and interference generated on the contact surface along with the reduction of the contact area, thereby improving the optical quality of the composite optical membrane. In addition, the composite optical film is also provided with the light-emitting layer, so that the display color gamut of the backlight module can be greatly improved, and the display requirement of the high color gamut of the existing display device is met.
Drawings
Fig. 1 is a schematic structural diagram of a composite optical film according to an embodiment of the present invention.
FIG. 2 is a top view of a microlens layer of the composite optical patch of FIG. 1.
FIG. 3 is a schematic structural diagram of a backlight module using the composite optical film shown in FIG. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. In the present specification, the term "step" is used to mean not only an independent step but also a step that is not clearly distinguished from other steps, provided that the action intended by the step is achieved. In the present specification, the numerical range represented by "-" means a range in which the numerical values described before and after "-" are included as the minimum value and the maximum value, respectively. In the drawings, elements having similar or identical structures are denoted by the same reference numerals.
The embodiment of the invention provides a composite optical membrane, which can effectively reduce the contact area between the composite optical membrane and a display module or other membranes by arranging lens structures with different heights, and can effectively weaken the phenomena of electrostatic adsorption and interference generated on the contact surface along with the reduction of the contact area, thereby improving the optical quality of the composite optical membrane.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a composite optical film according to an embodiment of the invention, and fig. 2 is a top view of a microlens layer of the composite optical film. In the embodiment of the present invention, the composite optical film 100 includes a film substrate 10 and a microlens layer 30 disposed above the film substrate 10, the microlens layer 30 includes a lens substrate 31 disposed on the film substrate 10, and a first lens structure 33 and a second lens structure 35 formed on the lens substrate 31, the first lens structure 33 and the second lens structure 35 are arranged in a matrix at intervals, and the first lens structure 33 and the second lens structure 35 have different heights.
According to the composite optical membrane 100, the lens structures (33, 35) on the micro-lens layer 30 are arranged in a spaced matrix and are designed to be unequal in height, so that the contact area between the composite optical membrane 100 and a display module is effectively reduced by more than 50%, the phenomenon of electrostatic adsorption on the contact surface can be effectively reduced, the phenomenon of molar interference fringes generated by the composite optical membrane 100 and the pixel line of the display module can be reduced, and the optical quality of the composite optical membrane is further improved.
In an embodiment of the present invention, the first lens structure 33 and the second lens structure 35 are hemispherical lens structures or quasi-hemispherical lens structures, and the sizes of the first lens structure 33 and the second lens structure 35 may be the same or different. In the present embodiment, the shape or structure of the first lens structure 33 and the second lens structure 35 is not particularly limited, and other modified shapes or structures are also within the scope of the present invention. In the invention, the lens structures (33, 35) are arranged in a hemispherical shape or a quasi-hemispherical shape, so that the microlens layer 30 can have a good light intensifying effect, thereby further improving the optical performance of the composite optical film 100.
In an embodiment of the present invention, the microlens layer 30 is formed by an embossing process. That is, in the preparation of the microlens layer 30, a transparent adhesive layer is coated on the diaphragm base 10, and then the lens base 31 located at the bottom and the first lens structure 33 and the second lens structure 35 located above are formed by mold imprinting. The lens structure is formed by an imprinting mode, the manufacturing process is simple, parameters such as specific shape, size and the like of the processed lens structure can be correspondingly adjusted by adjusting the imprinting mold, and obviously, the preparation process is more flexible and controllable.
In an embodiment of the present invention, the composite optical film 100 further includes a light emitting layer 50, and the light emitting layer 50 is hermetically disposed below the microlens layer 30 and can emit red light, green light, and the like under excitation of blue light, so as to improve a color gamut of the composite optical film 100.
In an embodiment of the present invention, the light emitting layer 50 is a glue layer formed by mixing an optical material capable of exciting red light and an optical material capable of exciting green light.
In another embodiment of the present invention, the light emitting layer 50 is a glue layer formed by mixing an optical material capable of exciting red light, an optical material capable of exciting green light, and an optical material capable of exciting blue light.
In one embodiment of the present invention, the light emitting layer 50 is a quantum dot layer or a fluorescent layer. In addition, in the present invention, the material of the light emitting layer 50 is not specifically limited, as long as it can emit red light and green light under the excitation of a blue backlight of the display module, and then mix with the blue light of the backlight to form white light with a high color gamut. Through the arrangement of the light-emitting layer 50, the composite optical film 100 has a high color gamut, so that the display requirement of the existing display device on the high color gamut is met.
In an embodiment of the present invention, the film substrate 10 is divided into two layers independent of each other, and the light emitting layer 50 is sealed between the two layers of independent film substrates 10, so as to effectively block the invasion of external water and oxygen to the light emitting layer 50 through the film substrate 10. In this embodiment, the light emitting layer 50 may be directly sealed by two film substrates 10, and in other embodiments, the light emitting layer 50 may be sealed in advance as a separate film and then disposed between the two film substrates 10 by gluing. In the present invention, the sealing method of the light emitting layer 50 is not particularly limited, and the sealing methods or other modifications of the two light emitting layers 50 are within the scope of the present invention.
It is understood that when the light-emitting layer 50 is a separate film formed by sealing in advance, the light-emitting layer may also be disposed at the bottom of the film substrate 10, and in the present invention, the position of the light-emitting layer 50 in the composite optical film 100 is not particularly limited.
In an embodiment of the present invention, diffusion particles 70 are further disposed below the film substrate 10, and the diffusion effect of the composite optical film 100 on light is increased by disposing the diffusion particles 70, so as to improve the optical performance of the composite optical film 100.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a backlight module using the composite optical film shown in fig. 1. The present invention further provides a backlight module, which includes a light source 200, a light guide plate 300, and a composite optical film 100 disposed above the light guide plate 300, wherein the light source 200 is a blue light source, and the composite optical film 100 is the above composite optical film, which will not be described in detail.
According to the composite optical membrane and the backlight module, the lens structures with different heights are arranged, so that the contact area of the composite optical membrane and the display module or other membranes can be effectively reduced, the phenomena of electrostatic adsorption and interference generated on the contact surface can be effectively reduced along with the reduction of the contact area, and the optical quality of the composite optical membrane is further improved. In addition, the composite optical film is also provided with the light-emitting layer, so that the display color gamut of the backlight module can be greatly improved, and the display requirement of the high color gamut of the existing display device is met.
It should be understood that the above-mentioned embodiments are merely preferred examples of the present invention, and not restrictive, but rather, all the changes, substitutions, alterations and modifications that come within the spirit and scope of the invention as described above may be made by those skilled in the art, and all the changes, substitutions, alterations and modifications that fall within the scope of the appended claims should be construed as being included in the present invention.
Claims (10)
1. A composite optical pellicle comprising a pellicle substrate and a microlens layer disposed over the pellicle substrate, characterized in that: the micro-lens layer comprises a lens base material arranged on the diaphragm base, and a first lens structure and a second lens structure which are formed on the lens base material, wherein the first lens structure and the second lens structure are arranged at intervals in a matrix mode, and the heights of the first lens structure and the second lens structure are different.
2. The composite optical film according to claim 1, wherein the first and second lens structures are each a hemispherical or quasi-hemispherical structure.
3. The composite optical film of claim 1, wherein: the micro-lens layer is formed by adopting an embossing process.
4. The composite optical film according to any of claims 1-3 further comprising a luminescent layer hermetically disposed below the microlens layer and emitting red and green light upon excitation by blue light.
5. The composite optical film of claim 4, wherein the luminescent layer is a quantum dot layer or a fluorescent layer.
6. The composite optical film according to claim 4, wherein the light-emitting layer is a glue layer formed by mixing an optical material capable of emitting red light and an optical material capable of emitting green light.
7. The composite optical film according to claim 4, wherein the light-emitting layer is a glue layer formed by mixing an optical material capable of emitting red light, an optical material capable of emitting green light, and an optical material capable of emitting blue light.
8. The composite optical film according to claim 4, wherein the film substrate is divided into two separate layers, and the luminescent layer is sealingly sandwiched between the two separate layers of film substrate.
9. The composite optical film of any of claims 1-3 wherein diffusing particles are disposed beneath the film substrate.
10. The utility model provides a backlight module, includes light source, light guide plate and sets up the compound optics diaphragm in the light guide plate top, its characterized in that: the light source is a blue light source, and the optical composite film is the composite optical film of any one of the claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811534428.9A CN111323852A (en) | 2018-12-14 | 2018-12-14 | Composite optical film and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811534428.9A CN111323852A (en) | 2018-12-14 | 2018-12-14 | Composite optical film and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111323852A true CN111323852A (en) | 2020-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811534428.9A Pending CN111323852A (en) | 2018-12-14 | 2018-12-14 | Composite optical film and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111323852A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162276A (en) * | 2007-11-16 | 2008-04-16 | 长兴化学工业股份有限公司 | Optical film |
| CN101592823A (en) * | 2008-05-28 | 2009-12-02 | Lg电子株式会社 | Optical sheet, back light unit and LCD |
| CN104991295A (en) * | 2015-06-23 | 2015-10-21 | 东莞市纳利光学材料有限公司 | Brightness enhancement film having blue light resistance effect and manufacturing method thereof |
| CN206990984U (en) * | 2017-07-11 | 2018-02-09 | 江苏双星彩塑新材料股份有限公司 | A kind of micro- complex optical film that adds lustre to for backlight module |
| CN107797298A (en) * | 2016-08-31 | 2018-03-13 | 张家港康得新光电材料有限公司 | The preparation method of optical element, Optical devices and optical element |
| CN108107491A (en) * | 2017-11-29 | 2018-06-01 | 宁波激智科技股份有限公司 | A kind of optical film of anti-moisture absorption |
| CN108614376A (en) * | 2018-03-28 | 2018-10-02 | 宁波江北激智新材料有限公司 | A kind of high efficiency quantum dot film and its preparation method and application reflecting blue light |
-
2018
- 2018-12-14 CN CN201811534428.9A patent/CN111323852A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162276A (en) * | 2007-11-16 | 2008-04-16 | 长兴化学工业股份有限公司 | Optical film |
| CN101592823A (en) * | 2008-05-28 | 2009-12-02 | Lg电子株式会社 | Optical sheet, back light unit and LCD |
| CN104991295A (en) * | 2015-06-23 | 2015-10-21 | 东莞市纳利光学材料有限公司 | Brightness enhancement film having blue light resistance effect and manufacturing method thereof |
| CN107797298A (en) * | 2016-08-31 | 2018-03-13 | 张家港康得新光电材料有限公司 | The preparation method of optical element, Optical devices and optical element |
| CN206990984U (en) * | 2017-07-11 | 2018-02-09 | 江苏双星彩塑新材料股份有限公司 | A kind of micro- complex optical film that adds lustre to for backlight module |
| CN108107491A (en) * | 2017-11-29 | 2018-06-01 | 宁波激智科技股份有限公司 | A kind of optical film of anti-moisture absorption |
| CN108614376A (en) * | 2018-03-28 | 2018-10-02 | 宁波江北激智新材料有限公司 | A kind of high efficiency quantum dot film and its preparation method and application reflecting blue light |
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Application publication date: 20200623 |
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