CN104713031A - Composite prism unit, backlight module and display device - Google Patents
Composite prism unit, backlight module and display device Download PDFInfo
- Publication number
- CN104713031A CN104713031A CN201510142124.8A CN201510142124A CN104713031A CN 104713031 A CN104713031 A CN 104713031A CN 201510142124 A CN201510142124 A CN 201510142124A CN 104713031 A CN104713031 A CN 104713031A
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- Prior art keywords
- prism
- prismatic lens
- jut
- composite
- brightness
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention relates to the technical field of display, in particular to a composite prism unit, a backlight module and a display device. The composite prism unit comprises a base material, an upper prism sheet and a lower prism sheet, wherein the upper prism sheet and the lower prism sheet are located on the upper surface and lower surface of the base material respectively, prism protruding parts in the lower prism sheet protrude in the direction backing onto the base material and are arranged in a wavy mode in the Y direction, prism protruding parts in the lower prism sheet protrudes in the direction opposite to the protruding direction of the prism protruding parts in the lower prism sheet, the prism protruding parts in the lower prism sheet are arranged in a wavy mode in the X direction, and the Y direction is perpendicular to the X direction. According to the composite prism unit, the backlight module and the display device, by setting the facing directions and arranging directions of prisms of the upper prism sheet and the lower prism sheet, the brightness view angle of the prism unit in the left-right direction can be effectively increased, the brightness can be highest when the view angle ranges from 20 degrees to 50 degrees, the brightness is reduced when the view angle is zero, and the composite prism unit, the backlight module and the display device can be used for vehicle-mounted display, two-people entertainment display and other aspects.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of composite prism unit, backlight module, display unit.
Background technology
In a liquid crystal display, backlight source module is usually adopted to provide light source.As shown in Figure 1, prism unit in prior art backlight source module comprises prismatic lens 1 ' and lower prismatic lens 2 ', on this, prismatic lens 1 ' and lower prismatic lens 2 ' all adopt prism direction upwards, and two prisms angle is mutually vertical up and down, to reach the effect of converging ray, under making 0 ° of visual angle, backlight illumination is maximum.But find in actual applications, this kind of structure limits liquid crystal display module luminance viewing angle.When viewing angle increases, brightness can obviously reduce, there is significant limitation, with reference to figure 2 at aspects such as large scale display, public display, car-mounted display, double amusements display (under requiring 0 ° of visual angle, brightness is little, and in 20 ° ~ 50 ° angulars field of view, brightness is high).
Summary of the invention
(1) technical problem that will solve
The object of the present invention is to provide a kind of composite prism unit, backlight module, display unit, to overcome the luminance viewing angle that prism unit of the prior art limits display module, there is circumscribed defect in brightness display under large scale display mode.
(2) technical scheme
For solving the problem, one aspect of the present invention provides a kind of composite prism unit, comprising: base material, lays respectively at the upper prismatic lens on the upper and lower surface of described base material and lower prismatic lens;
Prism jut in described lower prismatic lens is described base material direction projection dorsad, and described prism jut arranges along Y-direction undulate;
The projection direction of the prism jut in described upper prismatic lens is contrary with the projection direction of prism jut in lower prismatic lens, and the prism jut undulate arrangement in X direction in described upper prismatic lens;
Described Y-direction and X-direction are mutually vertical.
Preferably, in described upper prismatic lens, prism jut is triangle along the cross section of Y-direction, and described leg-of-mutton drift angle is acute angle or fillet.
Preferably, in described upper prismatic lens, prism jut is semicircle along the cross section of Y-direction.
Preferably, in described lower prismatic lens, prism jut cross section is in X direction triangle, and described leg-of-mutton drift angle is acute angle or fillet.
Preferably, in described lower prismatic lens, prism jut cross section is in X direction semicircle.
Preferably, described base material is made by polyester material.
Preferably, described upper prismatic lens and/or lower prismatic lens are made by resin material.
On the other hand, the present invention also provides a kind of backlight module, comprises above-mentioned composite prism unit.
Again on the one hand, the present invention also provides a kind of display unit, comprises above-mentioned backlight module.
(3) beneficial effect
The invention provides a kind of composite prism unit, backlight module, display unit, by prism that upper prismatic lens and lower prismatic lens be set towards and orientation, effectively can increase the luminance viewing angle of its left and right directions, make the brightness in 20 ° ~ 50 ° angulars field of view in left and right maximum, and the brightness at 0 ° of visual angle reduces, can be applicable to car-mounted display, the aspects such as double amusement display, when the left and right sides can be made to watch, picture brightness is maximum, and brightness reduces during the viewing of other directions, under reaching 0 ° of visual angle, brightness is little, the display effect that in 20 ° ~ 50 ° angulars field of view, brightness is high, improve the visual experience of user.
Accompanying drawing explanation
Fig. 1 is prism unit structural representation in prior art;
Fig. 2 is the luminance viewing angle simulation curve based on Fig. 1 structure in prior art;
Fig. 3 is embodiment of the present invention composite prism chip architecture schematic diagram;
Fig. 4 is prism Sheet structure and light schematic diagram under embodiment of the present invention composite prism sheet;
Fig. 5 is the luminance viewing angle simulation curve based on Fig. 4 structure;
Fig. 6 is another structure of prismatic lens and light schematic diagram under embodiment of the present invention composite prism sheet;
Fig. 7 is the luminance viewing angle simulation curve based on Fig. 6 structure;
Fig. 8 is a prismatic lens structure and light schematic diagram again under embodiment of the present invention composite prism sheet;
Fig. 9 is the luminance viewing angle simulation curve based on Fig. 8 structure.
Wherein:
A, emergent ray; 1, base material; 2, upper prismatic lens; 3, lower prismatic lens; B, incident ray.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 3, the invention provides a kind of composite prism unit, it comprises: base material 1, lays respectively at the upper prismatic lens 2 on the upper and lower surface of base material 1 and lower prismatic lens 3;
Prism jut in described lower prismatic lens 3 is described base material 1 direction projection dorsad, and described prism jut arranges along Y-direction undulate;
The projection direction of the prism jut in described upper prismatic lens 2 is contrary with the projection direction of prism jut in lower prismatic lens 3, and the prism jut undulate arrangement in X direction in described upper prismatic lens 2;
Described Y-direction and X-direction are mutually vertical.
Continue with reference to figure 3, the parallel incident ray B of two bundles impinges perpendicularly on composite prism unit, and after the effect of lower prismatic lens 3 and upper prismatic lens 2, the direction of emergent ray A there occurs great change, light is spread to the left and right, at utmost improves the brightness of the left and right sides.
By prism that upper prismatic lens 2 and lower prismatic lens 3 be set towards and orientation, effectively can increase the luminance viewing angle of its left and right directions, make the brightness in 20 ° ~ 50 ° angulars field of view in left and right maximum, and the brightness at 0 ° of visual angle reduces, can be applicable to car-mounted display, the aspects such as double amusement display, when the left and right sides can be made to watch, picture brightness is maximum, and brightness reduces during the viewing of other directions, under reaching 0 ° of visual angle, brightness is little, the display effect that in 20 ° ~ 50 ° angulars field of view, brightness is high, improves the visual experience of user.
In upper prismatic lens 2 in the present embodiment, prism jut is triangle or semicircle along the cross section of Y-direction, described leg-of-mutton drift angle is acute angle or fillet, the divergent rays of upper and lower for vertical direction both sides can gather by upper prismatic lens 2, reduce upper and lower to visual angle.
As shown in Figure 4, in the lower prismatic lens 3 in the present embodiment, prism jut cross section is in X direction triangle, and described leg-of-mutton drift angle is acute angle.Prism jut cross section is adopted to be triangle, and leg-of-mutton drift angle is the setting of acute angle shape, the light of the left and right sides is dispersed to both sides (dispersion angle is θ 1), thus improve the luminance viewing angle of left and right directions, make the brightness in 20 ° ~ 50 ° angulars field of view in left and right maximum, and the brightness at 0 ° of visual angle reduces, concrete brightness curve figure is with reference to figure 5.
In addition, as shown in Figure 6, in the lower prismatic lens 3 in the present embodiment, the cross section of prism jut can also be triangle, and described leg-of-mutton drift angle is fillet.Prism jut cross section is adopted to be triangle, and leg-of-mutton drift angle is fillet setting, the light of the left and right sides is dispersed to both sides (dispersion angle is θ 2), thus improve the luminance viewing angle of left and right directions, make the brightness in 20 ° ~ 50 ° angulars field of view in left and right maximum, and the brightness at 0 ° of visual angle reduces, concrete brightness curve figure is with reference to figure 7.
In addition, as described in Figure 8, in lower prismatic lens 3 in the present embodiment, prism jut can also be semicircle along the cross section of Y-direction, prism jut cross section is adopted to be semicircle setting, the light of the left and right sides is dispersed to both sides (dispersion angle is θ 3), thus improves the luminance viewing angle of left and right directions, make the brightness in 20 ° ~ 50 ° angulars field of view in left and right maximum, and the brightness at 0 ° of visual angle reduces, concrete brightness curve figure is with reference to figure 9.
Wherein, the base material 1 in the present embodiment is preferably made by polyester material, and upper prismatic lens 2 and/or lower prismatic lens 3 are preferably made by resin material.
It should be noted that, base material 1, except adopting polyester material and making, can also adopt and have same or similar physical property other materials with polyester material and make.
Upper prismatic lens 2 and/or lower prism 3, except adopting resin material and making, can also adopt the other materials with resin material with same or similar physical property to make.
On the other hand, the present invention also provides a kind of backlight module, comprises above-mentioned composite prism unit.
Again on the one hand, the present invention also provides a kind of display unit, comprises above-mentioned backlight module.This display unit can be the electronic products such as liquid crystal display, LCD TV, panel computer, mobile phone, e-book.
Composite prism unit provided by the invention, backlight module, display unit, by prism that upper prismatic lens and lower prismatic lens be set towards and orientation, effectively can increase the luminance viewing angle of its left and right directions, make the brightness in 20 ° ~ 50 ° angulars field of view in left and right maximum, and the brightness at 0 ° of visual angle reduces, can be applicable to car-mounted display, the aspects such as double amusement display, when the left and right sides can be made to watch, picture brightness is maximum, and brightness reduces during the viewing of other directions, under reaching 0 ° of visual angle, brightness is little, the display effect that in 20 ° ~ 50 ° angulars field of view, brightness is high, improve the visual experience of user.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.
Claims (9)
1. a composite prism unit, is characterized in that, comprising: base material, lays respectively at the upper prismatic lens on the upper and lower surface of described base material and lower prismatic lens;
Prism jut in described lower prismatic lens is described base material direction projection dorsad, and described prism jut arranges along Y-direction undulate;
The projection direction of the prism jut in described upper prismatic lens is contrary with the projection direction of prism jut in lower prismatic lens, and the prism jut undulate arrangement in X direction in described upper prismatic lens;
Described Y-direction and X-direction are mutually vertical.
2. composite prism unit as claimed in claim 1, it is characterized in that, in described upper prismatic lens, prism jut is triangle along the cross section of Y-direction, and described leg-of-mutton drift angle is acute angle or fillet.
3. composite prism unit as claimed in claim 1, is characterized in that, in described upper prismatic lens, prism jut is semicircle along the cross section of Y-direction.
4. composite prism unit as claimed in claim 1, it is characterized in that, in described lower prismatic lens, prism jut cross section is in X direction triangle, and described leg-of-mutton drift angle is acute angle or fillet.
5. composite prism unit as claimed in claim 1, is characterized in that, in described lower prismatic lens, prism jut cross section is in X direction semicircle.
6. composite prism unit as claimed in claim 1, it is characterized in that, described base material is made by polyester material.
7. composite prism unit as claimed in claim 1, it is characterized in that, described upper prismatic lens and/or lower prismatic lens are made by resin material.
8. a backlight module, is characterized in that, comprises the composite prism unit described in any one of claim 1-7.
9. a display unit, is characterized in that, comprises backlight module according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510142124.8A CN104713031A (en) | 2015-03-27 | 2015-03-27 | Composite prism unit, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510142124.8A CN104713031A (en) | 2015-03-27 | 2015-03-27 | Composite prism unit, backlight module and display device |
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| Publication Number | Publication Date |
|---|---|
| CN104713031A true CN104713031A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510142124.8A Pending CN104713031A (en) | 2015-03-27 | 2015-03-27 | Composite prism unit, backlight module and display device |
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| CN (1) | CN104713031A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539268A (en) * | 2016-01-08 | 2016-05-04 | 东莞市菲思电子科技有限公司 | Light distribution system |
| CN106054455A (en) * | 2016-08-10 | 2016-10-26 | 武汉华星光电技术有限公司 | Direct-lit backlight module |
| CN106483711A (en) * | 2015-08-31 | 2017-03-08 | 夏普株式会社 | Liquid crystal indicator |
| CN108646465A (en) * | 2018-03-06 | 2018-10-12 | 友达光电股份有限公司 | Display device |
| CN111477100A (en) * | 2020-04-21 | 2020-07-31 | 京东方科技集团股份有限公司 | Light control film, manufacturing method and vehicle-mounted display device |
| CN114137760A (en) * | 2020-09-04 | 2022-03-04 | 海信视像科技股份有限公司 | Display device |
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| TW200831951A (en) * | 2006-11-29 | 2008-08-01 | Hitachi Maxell | Optical sheet used in backlight device, backlight device and display device |
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| CN203413546U (en) * | 2013-06-28 | 2014-01-29 | 3M材料技术（广州）有限公司 | Optical film layer, backlight module and liquid crystal display device |
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| JP2001195913A (en) * | 2000-01-07 | 2001-07-19 | Toshiba Corp | Back light of flat display apparatus |
| CN1614471A (en) * | 2003-11-08 | 2005-05-11 | 三星电子株式会社 | Light guide plate and backlight assembly having the same |
| CN101140331A (en) * | 2006-07-27 | 2008-03-12 | 三星电子株式会社 | Dual prism sheet and backlight assembly having the same |
| TW200831951A (en) * | 2006-11-29 | 2008-08-01 | Hitachi Maxell | Optical sheet used in backlight device, backlight device and display device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483711A (en) * | 2015-08-31 | 2017-03-08 | 夏普株式会社 | Liquid crystal indicator |
| CN105539268A (en) * | 2016-01-08 | 2016-05-04 | 东莞市菲思电子科技有限公司 | Light distribution system |
| CN105539268B (en) * | 2016-01-08 | 2018-09-25 | 东莞市菲思电子科技有限公司 | A kind of light distributing system |
| CN106054455A (en) * | 2016-08-10 | 2016-10-26 | 武汉华星光电技术有限公司 | Direct-lit backlight module |
| CN108646465A (en) * | 2018-03-06 | 2018-10-12 | 友达光电股份有限公司 | Display device |
| CN111477100A (en) * | 2020-04-21 | 2020-07-31 | 京东方科技集团股份有限公司 | Light control film, manufacturing method and vehicle-mounted display device |
| CN111477100B (en) * | 2020-04-21 | 2022-08-09 | 京东方科技集团股份有限公司 | Light control film, manufacturing method and vehicle-mounted display device |
| CN114137760A (en) * | 2020-09-04 | 2022-03-04 | 海信视像科技股份有限公司 | Display device |
| CN114137760B (en) * | 2020-09-04 | 2024-03-19 | 海信视像科技股份有限公司 | Display device |
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Application publication date: 20150617 |
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