CN110927859A - Light guide plate capable of filtering blue light - Google Patents
Light guide plate capable of filtering blue light Download PDFInfo
- Publication number
- CN110927859A CN110927859A CN201911417797.4A CN201911417797A CN110927859A CN 110927859 A CN110927859 A CN 110927859A CN 201911417797 A CN201911417797 A CN 201911417797A CN 110927859 A CN110927859 A CN 110927859A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- light guide
- blue light
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 21
- 235000009537 plain noodles Nutrition 0.000 claims description 21
- 239000012788 optical film Substances 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011324 bead Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 208000002177 Cataract Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 208000002780 macular degeneration Diseases 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a light guide plate capable of filtering blue light, which comprises a light incident surface, a light emergent surface and a bottom surface, wherein the light incident surface is a side surface of the light guide plate, the light emergent surface is an upper surface of the light guide plate, the bottom surface is a lower surface of the light guide plate, a plurality of wavy grooves are dug in the light incident surface, and a slope is arranged on the light emergent surface and close to the light incident surface. The light guide plate capable of filtering blue light provided by the invention can be used for filtering short-wave blue light within 400-440 nanometers, filtering 70-80% of blue light in the wave band, and having a good effect, so that human eyes can be effectively protected, and the damage of a liquid crystal screen to the human eyes is greatly reduced.
Description
Technical Field
The invention relates to the field of liquid crystal display, in particular to a light guide plate capable of filtering blue light.
Background
Liquid crystal display devices are widely used in the fields of mobile phones, computers, televisions, and the like because of their advantages such as low radiation, light, thin, small, and low power consumption. Since the liquid crystal surface of the lcd device does not have a light-emitting characteristic, it is necessary to provide planar light to the lcd panel by the backlight module to realize the display function of the lcd device. The light guide plate is a key component for providing planar light for the backlight module, and is used for guiding the direction of light and enabling the brightness of a light source to be uniform, so that the uniform planar light is provided for the liquid crystal display device.
LED-based backlit display and lighting devices have become increasingly popular today. The LED lamp bead used as a light source usually selects blue light as a substrate, and the surface of the LED lamp bead is coated with a fluorescent powder material to realize RGB conversion of light. Although, the light is compounded into white light by the three primary colors of the color light. However, due to the process difference of manufacturers and aging attenuation of materials in the using process, a small amount of blue light leaks after long-term lighting. Especially short-wave blue light, the human eyes can damage retinal cells after being contacted for a long time, and diseases such as macular degeneration, cataract and the like are caused. How to reduce the harm of blue light to human eyes is getting more and more attention.
Short-wave blue light is light with relatively high energy at wavelengths between 400nm and 480 nm. Blue light in this wavelength can increase the amount of toxins in the macular region of the eye, seriously threatening our ocular fundus health. Blue light induces eye blindness, and the effective solution at present is to apply film treatment to the television. Here, it is specifically suggested that blue light is not harmful blue light, but really harmful blue light within 400 to 440 nm, and blue light between 480 and 500 nm has a biological rhythm regulating effect, and sleep, emotion, memory, etc. are all related to the harmful blue light, but are beneficial to human body. And short-wave blue light is not certain to cause damage to human eyes, which is related to irradiation intensity and irradiation time, and when the illumination reaches a certain degree and lasts for more than two hours, damage to a retina is possible.
Disclosure of Invention
In view of this, the invention provides a light guide plate capable of filtering blue light, which can filter short-wave blue light within 400 to 440 nanometers, can filter 70-80% of blue light in the waveband, has a good effect, can effectively protect human eyes, and greatly reduces the damage of a liquid crystal screen to the human eyes.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a can strain light guide plate of blue light, includes income plain noodles, goes out plain noodles and bottom surface, goes into the plain noodles and is the side of light guide plate, goes out the plain noodles and be the light guide plate upper surface, and the bottom surface is the light guide plate lower surface, digs on going into the plain noodles and is equipped with a plurality of wave-shaped grooves, closes on the play plain noodles and goes into plain noodles.
Preferably, the slope is parallel to the light incident surface, the slope divides the light emitting surface into a high light emitting surface and a low light emitting surface, the high light emitting surface protrudes from the low light emitting surface, and the high light emitting surface is located between the slope and the light incident surface.
Preferably, the area of the high light emergent surface is smaller than that of the low light emergent surface, and an included angle formed by the slope and the low light emergent surface is an obtuse angle.
Preferably, the wave-shaped groove comprises a groove arc surface I, a groove bottom surface, a groove arc surface II and a groove top surface which are connected in sequence.
Preferably, the area of the top surface of the groove is larger than the area of the bottom surface of the groove.
Preferably, the wave-shaped groove A and the wave-shaped groove B are adjacent wave-shaped grooves, and the groove arc surface I of the wave-shaped groove A is connected with the groove top surface of the wave-shaped groove B.
Preferably, a plurality of salient points are arranged on the bottom surface, a light reflecting sheet is arranged in each salient point, and the shape of each salient point is spherical or cylindrical.
Preferably, along the direction departing from the light incident surface, the area of each bump is the same, and the distribution density of the bumps is increased.
Preferably, the bumps are arranged in the area corresponding to the low light-emitting surface on the bottom surface.
Preferably, the light-emitting surface is adhered with an optical film.
Compared with the prior art, the invention has the beneficial effects that:
the light guide plate capable of filtering blue light can filter short-wave blue light within 400-440 nanometers, can filter 70-80% of blue light in the wave band, has a good effect, can effectively protect human eyes, and greatly reduces the damage of a liquid crystal screen to the human eyes.
Drawings
Fig. 1 is a structural diagram of a light guide plate capable of filtering blue light according to an embodiment of the invention.
Fig. 2 is an enlarged view of the area a in fig. 1.
Fig. 3 is a rear structure view of a light guide plate capable of filtering blue light according to an embodiment of the invention.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1-3, an embodiment of the invention includes:
the utility model provides a can strain light guide plate of blue light, is including going into plain noodles 1, play plain noodles 2 and bottom surface 3, goes into plain noodles 1 and is the side of light guide plate, goes out plain noodles 2 and is the upper surface of light guide plate, and bottom surface 3 is the lower surface of light guide plate, goes into to dig on the plain noodles 1 and is equipped with a plurality of wave-shaped grooves 4, closes on the plain noodles 2 and goes into plain noodles 1 department and be provided with.
The slope 5 is parallel to the light incident surface 1, the slope 5 divides the light emitting surface 2 into a high light emitting surface 6 and a low light emitting surface 7, the high light emitting surface 6 protrudes from the low light emitting surface 7, and the high light emitting surface 6 is located between the slope 5 and the light incident surface 1. The area of the high light emergent surface 6 is smaller than that of the low light emergent surface 7, and an included angle formed by the slope 5 and the low light emergent surface 7 is an obtuse angle. The wavy groove 4 comprises a groove cambered surface I8, a groove bottom surface 9, a groove cambered surface II 10 and a groove top surface 11 which are connected in sequence.
The area of the channel top surface 11 is larger than the area of the channel bottom surface 9. The wave-shaped groove A and the wave-shaped groove B are adjacent wave-shaped grooves 4, and the groove arc surface I8 of the wave-shaped groove A is connected with the groove top surface 11 of the wave-shaped groove B. A plurality of salient points 12 are arranged on the bottom surface 3, a light reflecting sheet is arranged in each salient point 12, and the shape of each salient point 12 is spherical or cylindrical.
Along the direction deviating from the light incident surface 1, the area of each bump 12 is the same, and the distribution density of the bumps 12 is increased. The bumps 12 are arranged on the bottom surface 3 in the area corresponding to the low light emitting surface 7. The light-emitting surface 2 is adhered with an optical film.
The working principle is as follows, the LED lamp irradiates on the light incident surface 1, light is scattered in the first groove arc surface 8 and the second groove arc surface 10 in the wave-shaped groove 4, short-wave blue light with short wavelength is largely filtered at the slope 5, the filtering rate can reach 70-80%, and harmful blue light in the liquid crystal screen is effectively reduced.
In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate orientations or positional relationships, are used based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and for the simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.
Claims (10)
1. The utility model provides a can strain light guide plate of blue light, its characterized in that, is including going into plain noodles (1), play plain noodles (2) and bottom surface (3), it is the side of light guide plate to go into plain noodles (1), it is the upper surface of light guide plate to go out plain noodles (2), bottom surface (3) are the lower surface of light guide plate, it is equipped with a plurality of wave-shaped grooves (4) to dig on going into plain noodles (1), it is provided with slope (5) to close on plain noodles (2) and go into plain noodles (1) department.
2. The light guide plate capable of filtering blue light according to claim 1, wherein the slope (5) is parallel to the light incident surface (1), the slope (5) divides the light emitting surface (2) into a high light emitting surface (6) and a low light emitting surface (7), the high light emitting surface (6) protrudes from the low light emitting surface (7), and the high light emitting surface (6) is located between the slope (5) and the light incident surface (1).
3. The light guide plate capable of filtering blue light according to claim 2, wherein the area of the high light emitting surface (6) is smaller than the area of the low light emitting surface (7), and an included angle formed by the slope (5) and the low light emitting surface (7) is an obtuse angle.
4. The light guide plate capable of filtering blue light according to claim 1, wherein the wave-shaped groove (4) comprises a groove arc surface I (8), a groove bottom surface (9), a groove arc surface II (10) and a groove top surface (11) which are connected in sequence.
5. The light guide plate for filtering blue light according to claim 4, wherein the groove top surface (11) has an area larger than that of the groove bottom surface (9).
6. The light guide plate for filtering blue light according to claim 1, wherein the wave-shaped groove A and the wave-shaped groove B are adjacent wave-shaped grooves (4), and the groove arc faces (8) of the wave-shaped groove A are connected with the groove top faces (11) of the wave-shaped groove B.
7. The light guide plate capable of filtering blue light according to claim 1, wherein a plurality of bumps (12) are disposed on the bottom surface (3), a reflective sheet is disposed in the bumps (12), and the bumps (12) have a spherical shape or a cylindrical shape.
8. The light guide plate capable of filtering blue light according to claim 7, wherein along a direction away from the light incident surface (1), the area of each of the bumps (12) is the same, and the distribution density of the bumps (12) is increased.
9. The light guide plate capable of filtering blue light according to claim 7, wherein the bumps (12) are disposed on the bottom surface (3) in the regions corresponding to the low light emitting surfaces (7).
10. The light guide plate capable of filtering blue light according to claim 1, wherein the light emitting surface (2) is adhered with an optical film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417797.4A CN110927859A (en) | 2019-12-31 | 2019-12-31 | Light guide plate capable of filtering blue light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417797.4A CN110927859A (en) | 2019-12-31 | 2019-12-31 | Light guide plate capable of filtering blue light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110927859A true CN110927859A (en) | 2020-03-27 |
Family
ID=69854574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911417797.4A Pending CN110927859A (en) | 2019-12-31 | 2019-12-31 | Light guide plate capable of filtering blue light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110927859A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120044195A (en) * | 2010-10-27 | 2012-05-07 | 엘지디스플레이 주식회사 | Liquid crystal display device |
| CN103900031A (en) * | 2012-12-27 | 2014-07-02 | 厦门天马微电子有限公司 | Light guide device for liquid crystal display |
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN210982800U (en) * | 2019-12-31 | 2020-07-10 | 惠州市龙祥兴科技有限公司 | Light guide plate capable of filtering blue light |
-
2019
- 2019-12-31 CN CN201911417797.4A patent/CN110927859A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120044195A (en) * | 2010-10-27 | 2012-05-07 | 엘지디스플레이 주식회사 | Liquid crystal display device |
| CN103900031A (en) * | 2012-12-27 | 2014-07-02 | 厦门天马微电子有限公司 | Light guide device for liquid crystal display |
| CN108562963A (en) * | 2017-12-29 | 2018-09-21 | 重庆市中光电显示技术有限公司 | Light guide plate |
| CN210982800U (en) * | 2019-12-31 | 2020-07-10 | 惠州市龙祥兴科技有限公司 | Light guide plate capable of filtering blue light |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20150301407A1 (en) | Display Panel with Reduced Short-Wavelength Blue Light | |
| JP5899301B2 (en) | Light emitting diode | |
| TWI325990B (en) | ||
| KR101112552B1 (en) | Lens for light emitting diode, light emitting lens, back light assembly and liquid crystal display | |
| CN104950515A (en) | Display panel with short wave blue light restraining function | |
| CN204213761U (en) | A kind of display backlight structure reducing blue light harm | |
| CN104487887B (en) | Display device and light-emitting device | |
| CN211649922U (en) | Desk lamp and far-red light eye-protecting desk lamp | |
| WO2021035783A1 (en) | Display light source module for promoting growth and repair of retinal cells and visual neurons, display screen, and application | |
| CN105527668A (en) | Displayer and blue-light-preventing thin film thereof | |
| CN210982800U (en) | Light guide plate capable of filtering blue light | |
| TWI363904B (en) | Liquid crystal display device and back light unit thereof | |
| CN108594532A (en) | A kind of filter blue light display of blue light wavelength red shift | |
| WO2017113724A1 (en) | Light source device for instrument for alleviating fundus lesions in diabetes mellitus | |
| CN110927859A (en) | Light guide plate capable of filtering blue light | |
| KR20220007761A (en) | LED light assembly and display device with reducing blue light | |
| CN108646456B (en) | Display module and display device | |
| TWI533014B (en) | Eye protection module and its display device | |
| CN208172455U (en) | A kind of filter blue light display of blue light wavelength red shift | |
| CN104279462B (en) | Backlight source and display device | |
| CN113820889A (en) | Eye protection display with rear light source and sunlight as backlight | |
| CN113138499A (en) | Backlight module and display device | |
| CN207298530U (en) | LED backlight assembly and display device thereof | |
| CN219872027U (en) | Blue light prevention backlight display module | |
| CN203784828U (en) | Optical lens for direct type backlights and liquid crystal display backlight screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |