CN208636454U - Light guide plate, backlight module and display device - Google Patents
Light guide plate, backlight module and display device Download PDFInfo
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- CN208636454U CN208636454U CN201820686433.0U CN201820686433U CN208636454U CN 208636454 U CN208636454 U CN 208636454U CN 201820686433 U CN201820686433 U CN 201820686433U CN 208636454 U CN208636454 U CN 208636454U
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- guide plate
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Abstract
The utility model discloses a kind of light guide plate, backlight module and display devices, the light guide plate includes light guide plate substrate, the side of the light guide plate substrate is the incident side entered for light, is equipped with waveband selection reflecting layer and all band reflecting layer in the non-light incidence side end face of the light guide plate substrate；The double-deck reflecting layer is arranged in the end face of light guide plate non-light incidence side used in backlight module, waveband selection reflecting layer can realize the reflection function of certain specific band wavelength in spectral wavelength 380nm to 780nm wavelength band, the reflectivity requirements of this reflecting layer blue wave band are greater than the reflectivity of red-green glow wave band, realize non-uniform reflection in visible wavelength range in all band reflecting layer, the blue wave band absorbed in being propagated in light guide plate LED light source light compensates, realize that the high uniformity of liquid crystal module group backlight is shown, effectively improve the color offset phenomenon in backlight module, improve uniformity of chromaticity.
Description
Technical field
The utility model relates to technical field of liquid crystal display, fill more particularly to a kind of light guide plate, backlight module and display
It sets.
Background technique
At present in large scale side entering type liquid crystal module, LED is arranged in unilateral use substantially, and long distance is passed through in light guide plate
It disintegrates after penetrating and reflecting, since light guide plate plate blue light penetrance is lower than red-green glow wave band penetrance, causes far from incident side
Chromaticity coordinates and incident side differ greatly, the region of subjective separate incident side has certain yellow problem.
Announced, can look into solve above-mentioned difficult point technical solution it is as follows: Chinese patent CN201320131994.1 is disclosed
A kind of backlight module, the fluorescent material that can excite blue light is provided on light guide plate, LED backlight side is provided with purple
Outer smooth LED chip ejects blue light when ultraviolet light reaches fluorescent material, for supplementing absorbed blue light, reduces back
Color offset phenomenon in optical mode group improves uniformity of chromaticity.Above-mentioned patent formula is needed to add fluorescent material on light guide plate and be adopted
With ultraviolet leds chip, there are poor universality, situation at high cost.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of light guide plate, backlight module and display device, solves
The problem of side entering type LCD backlight mould group colour cast.
The utility model solves its technical problem, the technical solution adopted is that:
A kind of light guide plate, including light guide plate substrate, the side of the light guide plate substrate are the incident side entered for light,
The non-light incidence side end face of the light guide plate substrate is equipped with waveband selection reflecting layer and all band reflecting layer.
Further, the waveband selection reflecting layer uses the low band reflectivity in visible light wave range 380nm~780nm
Higher than the reflection material of high band reflectivity, and its width is suitable with the thickness of light guide plate substrate.
Further, all band reflecting layer -3 is using in visible light wave range 380nm~780nm internal reflection rate consistency
Good white reflection film or silver-colored reflectance coating, and its width is not more than the thickness of the light guide plate substrate.
The another object of the utility model is to provide a kind of backlight module, which includes above-mentioned light guide plate.
Further, the backlight module further includes back board module, LED light bar, reflectance coating 3, membrane combination and surface frame group
Part, the LED light bar are fixed on the edge of the back board module, the LED light bar light direction using heat-conducting glue band or screw
Be parallel to the normal orientation of the big plane of back board module backboard, successively stacked on the back board module be provided with reflectance coating,
Light guide plate and membrane combination, surface frame component are fixed on the flange of back board module using clamping or screw.
Further, the membrane combination is made of brightness enhancement film and even smooth film.
The another object of the utility model is to provide a kind of display device, which includes above-mentioned backlight module.
The beneficial effects of the utility model are:
The double-deck reflecting layer is arranged in the end face of light guide plate non-light incidence side used in backlight module, and waveband selection reflecting layer can be real
The reflection function of certain specific band wavelength in existing spectral wavelength 380nm to 780nm wavelength band, this reflecting layer blue wave band it is anti-
It penetrates rate and requires the reflectivity for being greater than red-green glow wave band, non-uniform reflection in visible wavelength range is realized in all band reflecting layer, to LED
Source light propagated in light guide plate in the blue wave band that absorbs compensate, realize that the high uniformity of liquid crystal module group backlight is aobvious
Show, effectively improves the color offset phenomenon in backlight module, improve uniformity of chromaticity.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required practical attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the present embodiment
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 shows light conducting plate structure schematic diagrames in the utility model embodiment；
Fig. 2 indicates back light module unit structure schematic diagram in the utility model embodiment；
Fig. 3 indicates that the utility model embodiment medium wave band selects reflecting layer reflectance map.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
As shown in Figure 1, the utility model proposes a kind of light guide plate, including light guide plate substrate 4-1, the light guide plate substrate
The side of 4-1 is the incident side entered for light, and other sides of the light guide plate substrate 4-1 are non-light incidence side, is led described
The double-deck reflecting layer: waveband selection reflecting layer 4-2 and all band reflecting layer 4-3 is arranged in the non-light incidence side end face of tabula rasa substrate 4-1；Wave
Section selection reflecting layer can realize the reflection function of certain specific band wavelength in spectral wavelength 380nm to 780nm wavelength band, this is anti-
The reflectivity requirements for penetrating layer blue wave band are greater than the reflectivity of red-green glow wave band, and visible wavelength range is realized in all band reflecting layer
Interior non-uniform reflection, LED light source light is propagated in light guide plate in the blue wave band that absorbs compensate, realize liquid crystal module back
The high uniformity of light is shown, is effectively improved the color offset phenomenon in backlight module, is improved uniformity of chromaticity.
Preferably, in the present embodiment, the waveband selection reflecting layer 4-2 is used in visible light wave range 380nm~780nm
Interior low band reflectivity is higher than the reflection material of high band reflectivity, it is preferable to use the beautiful nanometer multilayer stacked film in east, the light of this film
Reflecting properties schematic diagram as shown in figure 3, and its width it is suitable with the thickness of light guide plate substrate 4-1.
Preferably, in the present embodiment, all band reflecting layer 4-3 can be used commonly used in the art in visible light wave range
The good white reflection film of 380nm~780nm internal reflection rate consistency or silver-colored reflectance coating, the width in this reflecting layer can be according to practical effect
Fruit needs to adjust in the thickness range no more than the light guide plate substrate 4-1.
As shown in Fig. 2, the backlight module includes above-mentioned light guide plate 4 the utility model proposes a kind of backlight module.
Preferably, in the present embodiment, the backlight module further includes back board module 1, LED light bar 2, reflectance coating 3, diaphragm
Combination 5 and surface frame component 6, successively stack on the back board module 1 and are provided with reflectance coating 3, light guide plate 4 and membrane combination 5；Institute
The edge that LED light bar 2 is fixed on the back board module 1 using heat-conducting glue band or screw is stated, 2 light direction of LED light bar is flat
Row is in the normal orientation of the big plane of 1 backboard of back board module；Surface frame component 6 is fixed on back board module using clamping or screw
Flange on.
Preferably, in the present embodiment, the membrane combination 5 is made of brightness enhancement film and even smooth film.
When the work of this backlight module, specifically, the light source that LED light bar 2 is formed enters light through the light guide plate substrate 4-1
Side enters light guide plate, carries out in the double-deck reflecting layer that the non-light incidence side end face of the light guide plate substrate 4-1 is arranged to incident light anti-
It penetrates；Wherein waveband selection reflecting layer can realize the reflection of certain specific band wavelength in spectral wavelength 380nm to 780nm wavelength band
Function, the reflectivity requirements of this reflecting layer blue wave band are greater than the reflectivity of red-green glow wave band, and all band reflecting layer is realized visible
Non-uniform reflection in optical wavelength range, LED light source light is propagated in light guide plate in the blue wave band that absorbs compensate, realize
The high uniformity of liquid crystal module group backlight is shown, is effectively improved the color offset phenomenon in backlight module, is improved uniformity of chromaticity.
The utility model additionally provides a kind of display device comprising above-mentioned backlight module, the display dress of the utility model
It sets by using above-mentioned backlight module, to improve the using effect of the display device.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.
Claims (7)
1. a kind of light guide plate, which is characterized in that including light guide plate substrate (4-1), the side of the light guide plate substrate (4-1) is to supply
Light enter incident side, the non-light incidence side end face of the light guide plate substrate (4-1) be equipped with waveband selection reflecting layer (4-2) and
All band reflecting layer (4-3).
2. light guide plate as described in claim 1, which is characterized in that the waveband selection reflecting layer (4-2) is using in visible light
Low band reflectivity is higher than the reflection material of high band reflectivity, and its width and the light guide plate in wave band 380nm~780nm
The thickness of substrate (4-1) is suitable.
3. light guide plate as described in claim 1, which is characterized in that all band reflecting layer (4-3) is using in visible light wave
The good white reflection film of section 380nm~780nm internal reflection rate consistency or silver-colored reflectance coating, and its width is not more than the light guide plate
The thickness of substrate (4-1).
4. a kind of backlight module, which is characterized in that the backlight module includes light guide plate as described in any one of claims 1-3
(4)。
5. backlight module as claimed in claim 4, which is characterized in that the backlight module further includes back board module (1), LED
Lamp bar (2), reflectance coating (3), membrane combination (5) and surface frame component (6), the LED light bar (2) are solid using heat-conducting glue band or screw
It is scheduled on the edge of the back board module (1), it is flat greatly that LED light bar (2) light direction is parallel to the back board module (1) backboard
The normal orientation in face successively stacks on the back board module (1) and is provided with reflectance coating (3), light guide plate (4) and membrane combination
(5), surface frame component (6) is fixed on the flange of back board module using clamping or screw.
6. backlight module as claimed in claim 5, which is characterized in that the membrane combination (5) is by brightness enhancement film and even smooth film group
At.
7. a kind of display device, which is characterized in that including the described in any item backlight modules of claim 4-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820686433.0U CN208636454U (en) | 2018-05-09 | 2018-05-09 | Light guide plate, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820686433.0U CN208636454U (en) | 2018-05-09 | 2018-05-09 | Light guide plate, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208636454U true CN208636454U (en) | 2019-03-22 |
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ID=65731913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820686433.0U Active CN208636454U (en) | 2018-05-09 | 2018-05-09 | Light guide plate, backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208636454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115047677A (en) * | 2022-06-28 | 2022-09-13 | 京东方科技集团股份有限公司 | Backlight module and manufacturing method, device, medium, equipment and display device thereof |
| CN116381987A (en) * | 2023-05-31 | 2023-07-04 | 惠科股份有限公司 | Backlight module and display device |
-
2018
- 2018-05-09 CN CN201820686433.0U patent/CN208636454U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115047677A (en) * | 2022-06-28 | 2022-09-13 | 京东方科技集团股份有限公司 | Backlight module and manufacturing method, device, medium, equipment and display device thereof |
| CN115047677B (en) * | 2022-06-28 | 2023-10-24 | 京东方科技集团股份有限公司 | Backlight module, manufacturing method and device thereof, medium, equipment and display device |
| CN116381987A (en) * | 2023-05-31 | 2023-07-04 | 惠科股份有限公司 | Backlight module and display device |
| CN116381987B (en) * | 2023-05-31 | 2023-08-25 | 惠科股份有限公司 | Backlight module and display device |
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