CN110133910A - Concentration module, backlight module and display device - Google Patents
Concentration module, backlight module and display device Download PDFInfo
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- CN110133910A CN110133910A CN201910339380.4A CN201910339380A CN110133910A CN 110133910 A CN110133910 A CN 110133910A CN 201910339380 A CN201910339380 A CN 201910339380A CN 110133910 A CN110133910 A CN 110133910A
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- 230000003287 optical effect Effects 0.000 claims abstract description 54
- 239000004973 liquid crystal related substance Substances 0.000 claims description 18
- 238000005286 illumination Methods 0.000 claims description 3
- 235000008429 bread Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 18
- 230000000007 visual effect Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 12
- 238000009792 diffusion process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
- G02B5/045—Prism arrays
-
- 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
-
- 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
-
- 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
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- 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
This application discloses a kind of concentration module, backlight module and display device, which includes: bottom surface；Multiple first optical surfaces and multiple second optical surfaces, the multiple first optical surface and the multiple second optical surface are opposite with the bottom surface；Wherein, at fin, at least partly region of first optical surface and/or second optical surface is provided with optically focused micro-structure for first optical surface and second optical surface profile.The figure of the optically focused micro-structure includes at least one of triangular wave, sine wave, trapezoidal wave, and is arranged along the direction of the fin.The fringe region and middle section luminance difference that the concentration module can make display device enhance the brightness of fringe region away from reduction, so that corresponding display device has better consistency and superior display effect in display area.
Description
Technical field
The present invention relates to technical field of liquid crystal display, in particular to a kind of backlight module for liquid crystal display device and poly-
Optical module.
Background technique
Existing liquid crystal display (Liquid Crystal Display, LCD) not only has the spies such as frivolous, small in size
Point, and also have the advantages that radiationless, low-power consumption and manufacturing cost are relatively low, therefore gradually replaced traditional cathode
Ray tube (CRT) display, liquid crystal display is widely used in HD digital TV, desktop computer, notebook electricity at present
In the electronic equipments such as brain, tablet computer, mobile phone, digital camera, and leading position is occupied in portable display field.
The people of used liquid crystal display is, it can be seen that under narrow viewing angle mode, and there are certain visual perspectives for display screen, i.e.,
Computer is observed from the direction (i.e. normal direction) perpendicular to display plane or display, brightness are higher；What is observed from side is bright
It spends lower.As shown in Figure 1, by taking 14 cun of liquid crystal display as an example, as observation point is located at the central location of display and apart from aobvious
Show 35 centimetres of device, then distance of the central location of display apart from its edge is 15 centimetres, by can be calculated, observation point observation
Display edge and the angle of middle section (display normal) are about 23 °, i.e., the visual angle at display edge is 23 °.Existing skill
Backlight module corresponding to liquid crystal display in art, light distribution by curve C0 shown in Fig. 2 as shown in Fig. 2, can be seen
Out, under narrow viewing angle mode, the angle (visual angle) of sight and normal direction is smaller, then its corresponding brightness is bigger, angle (depending on
Angle) more big then corresponding brightness is with regard to smaller.In figure it is visible with angle increase brightness deterioration it is fairly obvious, -15 ° to+
Outside 15 ° of angular range, brightness compared with the brightness of central location normal direction its insufficient brightness 50%, for 14
For very little display, under narrow viewing angle mode, observation point is located at display center, then the display fringe region observed
Brightness is significantly lower than the brightness of middle section, and the influence to display effect is fairly obvious, seriously affects the usage experience of user.
Therefore, it is necessary to the backlight module and liquid crystal display device to the prior art optimize improvement, with promoted its
The brightness of narrow viewing angle mode lower edge margin enhances display effect, promotes user experience.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide one kind under narrow viewing angle mode, can make display device
Fringe region differs concentration module, backlight module and the display device reduced with middle section brightness, wherein the concentration module
By the optically focused micro-structure being arranged on the first optical surface and the second optical surface, spotlight effect is enhanced, but also corresponding back
Optical mode group has better light gathering, also makes corresponding display device under narrow viewing angle mode, has preferably display effect
Fruit.
According to an aspect of the present invention, a kind of concentration module is provided characterized by comprising
Bottom surface；
Multiple first optical surfaces and multiple second optical surfaces, the multiple first optical surface and the multiple second optical surface
Opposite with the bottom surface, first optical surface and second optical surface profile are at fin；
Wherein, at least partly region of first optical surface and/or second optical surface is provided with optically focused micro-structure.
Preferably, the figure of the optically focused micro-structure includes at least one of triangular wave, sine wave, trapezoidal wave, and edge
The extending direction of the fin is arranged.
Preferably, first optical surface and second optical surface include the micro- knot of the optically focused that multiple groups are parallel to each other
Structure.
Preferably, the triangular wave, sine wave, trapezoidal wave amplitude be less than its cycle length a quarter.
According to another aspect of the present invention, a kind of backlight module is also provided characterized by comprising
Light source；
Concentration module as described above.
Preferably, the backlight module is straight-down negative or side entering type.
In accordance with a further aspect of the present invention, the present invention also provides a kind of liquid crystal display devices, which is characterized in that the liquid crystal
Display device includes:
Display panel；
Backlight module as described above, the backlight module are located at the lower section of the display panel, are the display panel
The illumination of certain angle range is provided.
Preferably, the display panel has the function of width view angle switch, shows when the display panel is in narrow viewing angle
When mode, the backlight module makes display device be negative 25 degree to positive 25 degree of visual angle model in the angle with backlight module normal
Brightness in enclosing is not less than the 30% of center brightness, and the brightness outside minus 40 degree to positive 40 degree of angular field of view is bright no more than center
The 10% of degree.
It preferably, further include blast light polarizing film, the blast light polarizing film is located at the backlight module and the display panel
Between, to promote the brightness of the display device fringe region.
Preferably, the axial of the backlight module is rotated according to light distribution out, so that the beam angle of its horizontal direction
Degree maximizes.
One embodiment of the invention has the following advantages that or the utility model has the advantages that concentration module provided by the invention, uses
The mode of optically focused micro-structure is arranged in at least partly region of first optical surface and/or the second optical surface, enhances spotlight effect,
So that corresponding backlight module has better light gathering, and further, the display device with the backlight module, narrow
Under field-of-view mode, display device fringe region is more nearly in the brightness of central observation point and the brightness of middle section, is promoted aobvious
Show effect, while also making brightness of the display device outside certain angular field of view lower, realizes optically focused and diffusion function
Combination, the overturning of low ash rank can not be solved by solving the problems, such as that wide viewing angle panel is matched with compensation film, the concentration module structure letter
List and difficulty of processing is little is suitble to volume production.Display device provided by the present invention, which employs above-mentioned backlight modules, so that
The display device under narrow viewing angle mode, visual angle be negative 25 degree to positive 25 degree in the range of brightness decay no more than center it is bright
The 70% of degree, the brightness decay outside minus 40 degree to positive 40 degree of angular field of view are greater than the 90% of center brightness.It can make corresponding
Darkly state is shown at the big visual angle of display device, preferably protects the privacy of user.Of course, which can be used straight-down negative
Light source or side entering type light source, when using side entering type light source, the also settable light guide plate of the backlight module further carries out incident light
Adjustment, so as to adjust the light-emitting angle of backlight module.
Another preferred embodiment of the invention has the following advantages that or the utility model has the advantages that liquid crystal display provided by the present invention fills
It sets, by using above-mentioned backlight module, so that the brightness of fringe region of the display device under narrow viewing angle mode obtains one
Determine the enhancing of degree, also further improve the contrast and display effect of display device, for the display for being greater than certain size
Device is especially apparent, so that display device is in entire display area in the promotion effect of narrow viewing angle mode lower edge brightness
Brightness uniformity is more preferable, while also assuring display device darkly state at big visual angle, protects the privacy of user.
Detailed description of the invention
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from, in the accompanying drawings:
Fig. 1 shows the schematic diagram at the visual angle using display device；
Fig. 2 shows display device in the prior art different perspectives light distribution schematic diagram；
Fig. 3 shows the longitudinal cross-section schematic diagram of the concentration module of the embodiment of the present invention；
Fig. 4 shows light distribution schematic diagram of the display device in different perspectives of the embodiment of the present invention；
Fig. 5 a shows the top view of concentration module in the prior art.
Figure 5b shows that the perspective views of concentration module in the prior art.
Fig. 6 a shows the top view of the concentration module of first embodiment of the invention.
Fig. 6 b shows the perspective view of the concentration module of first embodiment of the invention.
Fig. 7 a shows the top view of the concentration module of second embodiment of the invention.
Fig. 7 b shows the perspective view of the concentration module of second embodiment of the invention.
Fig. 8 a shows the top view of the concentration module of third embodiment of the invention.
Fig. 8 b shows the perspective view of the concentration module of third embodiment of the invention.
Fig. 9 shows the light distribution schematic diagram of the display device of the embodiment of the present invention compared with prior art.
Specific embodiment
The various embodiments that the present invention will be described in more detail that hereinafter reference will be made to the drawings.In various figures, identical element
It is indicated using same or similar appended drawing reference.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.
Fig. 3 shows the longitudinal cross-section schematic diagram of the concentration module of the embodiment of the present invention；The concentration module includes: the first light
Face 101, the second optical surface 102 and bottom surface 103；Wherein, the first optical surface 101 and the second optical surface 102 with 103 phase of bottom surface
To setting, there is angle between the first optical surface 101 and the second optical surface 102, so that fin 112 is formed, the first optical surface 101
Such as positioned at the left side of fin 112, the second optical surface 102 is for example positioned at the right side of fin 112, in the first optical surface 101 and
Optically focused micro-structure (not shown) is arranged in at least partly region of two optical surfaces 102, so that the concentration module has preferably
Diffusion effect under spotlight effect and certain condition.The figure of the optically focused micro-structure includes triangular wave, sine wave or trapezoidal
Wave is separately positioned on the first optical surface 101 and the second optical surface 102, wherein the amplitude of each wave is equal along the direction of fin 112
Less than a quarter of its cycle length.It of course, include that multiple groups are mutually flat on the first optical surface 101 and the second optical surface 102
The optically focused micro-structure of row setting.
Fig. 4 shows the display device of the embodiment of the present invention under narrow viewing angle mode, the light distribution signal of different perspectives
Figure；The backlight module of the embodiment of the present invention includes light source and concentration module, and display device representated by C1, for example, uses in figure
The concentration module of the optically focused micro-structure of sinusoidal pattern, it can be seen that the display device is under narrow viewing angle mode, at visual angle
70% of brightness decay no more than center brightness being negative in the range of 25 degree to positive 25 degree, and at minus 15 degree to positive 15 degree
Brightness decay is smaller in angular field of view, and consistency of the display effect in entire indication range can be effectively ensured.Further,
Display device representated by C2 in figure, for example, using the concentration module of the optically focused micro-structure of triangular wave figure, by can in figure
See, the display device is same in the brightness decay that visual angle is negative in 25 degree to positive 25 degree of angular field of view under narrow viewing angle mode
No more than the 70% of center brightness, and in about minus 10 degree to positive 10 degree of angular field of view, brightness decay is minimum, the type
Concentration module is particularly suitable for edge visual angle and is negative in the display device of 10 degree of smaller sizes to positive 10 degree of ranges, in narrow view
Display effect under angle mould formula is more preferably.
Fig. 5 a and Figure 5b shows that the schematic diagram of concentration module in the prior art, concentration module in the prior art equally has
There are the first optical surface 101 and the second optical surface 102, the two forms corresponding fin 112, and concentration module in the prior art includes
The fin 112 of a plurality of distribution that is parallel to each other, so that the illumination below concentration module is by generating convergence effect after concentration module
Fruit.
Fig. 6 a and Fig. 6 b show the schematic diagram of the concentration module of first embodiment of the invention, the micro- knot of optically focused used in figure
The figure of structure is sine wave, and of course, which equally includes the first optical surface 101 and the second optical surface 102, the two shape
At corresponding fin 112, a plurality of fin 112 is arranged in parallel.Specifically, with the optically focused micro-structure on the first optical surface 101
For, in the optically focused micro-structure of sine wave, so that the first optical surface 101 is presented recessed or is protruded relative to the inside of fin 112
Sine wave type continuous cycles variation, and the amplitude of sine wave be less than its cycle length a quarter.
Fig. 7 a and Fig. 7 b show the schematic diagram of the concentration module of second embodiment of the invention, the micro- knot of optically focused used in figure
The figure of structure is triangular wave, and specific structure is similar with first embodiment, and only the figure of optically focused micro-structure is different, remaining is identical
Details are not described herein for structure.Further, Fig. 8 a and Fig. 8 b shows the present invention that the figure of optically focused micro-structure is trapezoidal wave
The schematic diagram of the concentration module of three embodiments.
Of course, the figure of optically focused micro-structure and the regional location of setting according to specific requirement, can be adjusted, to meet not
With the requirement under size or different usage scenarios.The optically focused micro-structure of different graphic can also be applied in same concentration module.
Fig. 9 shows the light distribution schematic diagram of the display device of the embodiment of the present invention compared with prior art, song in figure
Line C0 represents light distribution of the display device of the prior art under narrow viewing angle mode, and it is aobvious that curve C1, C2 respectively represent the present invention
Light distribution of two embodiments of showing device under narrow viewing angle mode.Display device representated by C1 for example, uses just
The concentration module of the optically focused micro-structure of string wave figure, display device representated by C2, for example, using the poly- of triangular wave figure
The concentration module of light micro-structure.
As it can be seen that display device provided by the present invention, under narrow viewing angle mode, visual angle is negative 25 degree to positive 25 in Fig. 9
70% of brightness decay no more than center brightness in range is spent, meanwhile, outside minus 40 degree to positive 40 degree of angular field of view
Brightness decay is obvious, and brightness decay be greater than center brightness 90%, i.e., visual angle be negative 25 degree to positive 25 degree in the range of
Brightness is not less than the 30% of center brightness.Brightness outside minus 40 degree to positive 40 degree of angular field of view is no more than center brightness
10%.Backlight module provided by the present invention realizes the compound of optically focused and diffusion function, so that corresponding display device is aobvious
Show that consistency is obviously improved with display effect, can also be achieved the black state in big visual angle and show, is conducive to protect privacy of user.Into one
Step, the concentration module in the display device can also arrange in pairs or groups with blast light polarizing film (APCF) to be used, and blast light polarizing film be located at backlight
Between mould group and display panel, to promote the brightness of display device fringe region under narrow viewing angle mode, so that display device is whole
The brightness uniformity of a display area is more preferable, while also ensuring display device darkly state at big visual angle, protects that user's is hidden
It is private.
One embodiment of the invention has the following advantages that or the utility model has the advantages that concentration module provided by the invention, uses
The mode of optically focused micro-structure is arranged in at least partly region of first optical surface and the second optical surface, realizes optically focused and diffusion function
Combination, enhance spotlight effect, but also corresponding backlight module has better light gathering, solve wide viewing angle panel
Matching with compensation film can not solve the problems, such as that low ash rank overturns, and simply and in processing there is no technology hardly possiblies for the concentration module structure
Degree is suitble to volume production.
Display device provided by the present invention, which employs above-mentioned backlight modules, so that the display device is in narrow viewing angle
Under mode, visual angle be negative 25 degree to positive 25 degree in the range of brightness decay be not more than center brightness 70%, at minus 40 degree
Brightness decay outside to positive 40 degree of angular field of view is greater than the 90% of center brightness.The big visual angle that can make corresponding display device is in
Black state is shown, preferably protects the privacy of user.Of course, which can be used directly-down light source or side entering type light source,
When using side entering type light source, the also settable light guide plate of the backlight module is further adjusted incident light, so as to adjust backlight
The light-emitting angle of mould group.
Another preferred embodiment of the invention has the following advantages that or the utility model has the advantages that liquid crystal display provided by the present invention fills
It sets, by using above-mentioned backlight module, so that the brightness of fringe region of the display device under narrow viewing angle mode obtains one
Determine the enhancing of degree, also further improve the contrast and display effect of display device, for the display for being greater than certain size
Device is especially apparent, so that display device is whole in narrow viewing angle mode in the promotion effect of narrow viewing angle mode lower edge brightness
The brightness uniformity of a display area is more preferable, while darkly state when also assuring big visual angle, protects the privacy of user.
It is as described above according to the embodiment of the present invention, it is the details of prominent technical solution of the present invention, each component in diagram
Ratio is not drawn according to actual proportions, and ratio and size shown in the drawings should not limit substantial technological side of the invention
Case, these embodiments details all there is no detailed descriptionthe, also not limiting the invention is only the specific embodiment.It is aobvious
So, as described above, it can make many modifications and variations.These embodiments are chosen and specifically described to this specification, be in order to
The principle of the present invention and practical application are preferably explained, so that skilled artisan be enable to utilize the present invention well
And modification on the basis of the present invention uses.The invention is limited only by the claims and the full scope thereof and equivalents thereof.
Claims (10)
1. a kind of concentration module characterized by comprising
Bottom surface；
Multiple first optical surfaces and multiple second optical surfaces, the multiple first optical surface and the multiple second optical surface with
The bottom surface is opposite, and first optical surface and second optical surface profile are at fin；
Wherein, at least partly region of first optical surface and/or second optical surface is provided with optically focused micro-structure.
2. concentration module according to claim 1, which is characterized in that the figure of the optically focused micro-structure include triangular wave,
At least one of sine wave, trapezoidal wave, and be arranged along the extending direction of the fin.
3. concentration module according to claim 2, which is characterized in that first optical surface and the second optics bread
Include the optically focused micro-structure that multiple groups are parallel to each other.
4. concentration module according to claim 2, which is characterized in that the triangular wave, sine wave, the amplitude of trapezoidal wave are small
In a quarter of its cycle length.
5. a kind of backlight module characterized by comprising
Light source；
Concentration module according to any one of claims 1-4.
6. backlight module according to claim 5, which is characterized in that the backlight module is straight-down negative or side entering type.
7. a kind of liquid crystal display device, which is characterized in that the liquid crystal display device includes:
Display panel；
Such as the described in any item backlight modules of claim 5-6, the backlight module is located at the lower section of the display panel, for institute
It states display panel and the illumination of certain angle range is provided.
8. liquid crystal display device according to claim 7, which is characterized in that the display panel has width view angle switch
Function, when the display panel is in narrow viewing angle display pattern, the backlight module make display device with backlight module
The brightness that the angle of normal is negative in 25 degree to positive 25 degree of angular field of view is not less than the 30% of center brightness, at minus 40 degree to just
Brightness outside 40 degree of angular field of view is not more than the 10% of center brightness.
9. liquid crystal display device according to claim 8, which is characterized in that further include blast light polarizing film, the blast is inclined
Light film is between the backlight module and the display panel, to promote the brightness of the display device fringe region.
10. liquid crystal display device according to claim 8, which is characterized in that the axial basis of the backlight module goes out light
Distribution is rotated, so that the light-emitting angle of its horizontal direction maximizes.
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| CN201910339380.4A CN110133910A (en) | 2019-04-25 | 2019-04-25 | Concentration module, backlight module and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986626A (en) * | 2020-08-07 | 2020-11-24 | 深圳市华星光电半导体显示技术有限公司 | Method for calculating brightness visual angle of backlight module unknown in advance and backlight module |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
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Application publication date: 20190816 |