CN1567055A - Side light type backlight assembly and LCD apparatus - Google Patents
Side light type backlight assembly and LCD apparatus Download PDFInfo
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- CN1567055A CN1567055A CN 03143060 CN03143060A CN1567055A CN 1567055 A CN1567055 A CN 1567055A CN 03143060 CN03143060 CN 03143060 CN 03143060 A CN03143060 A CN 03143060A CN 1567055 A CN1567055 A CN 1567055A
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- light
- optical waveguide
- light source
- waveguide layer
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Abstract
It is a side light aphototropism unit and LCD apparatus, wherein, the side light aphototropism unit comprises a light conductive unit, at least one light source, a light source reflector and prism slice. The light conductive unit comprises a light conductive layer, a reflection layer, a diffusion layer, wherein, the light conductive layer comprises relevant first surface and second surface, the diffusion layer is attached to first surface and reflection surface is attached to second surface. The light source is located at least one side of the light conductive unit and to project light to the light conductive layer. The light source reflector is located outside light source with an opening to the light conductive layer with a light reflection substance located inside and to reflect the light to the light conductive layer. The prism slice is parallel located by the diffusion layer of light conductive unit with protective diffusion slice outside.
Description
Technical field
The invention relates to a kind of side-light type backlight assembly and liquid crystal indicator.
Background technology
Along with the differentiation of display technology, display device produces various new-type display device from continuous differentiation of traditional cathode ray tube (CRT).Wherein, advantages such as that liquid crystal indicator (LCD) possesses is frivolous, power saving, low radiation, therefore become one of common now display device gradually, can be widely used among communication, information or the consumption electronic products such as mobile computer, digital camera, TV, Video Camera, mobile phone.
Liquid crystal indicator mainly is to show with a liquid crystal panel (LCD panel), because liquid crystal panel itself can't be luminous, therefore must supply the light source that brightness is abundant and be evenly distributed, and makes normally display image of liquid crystal panel.The function of this supply light source is promptly undertaken by (backlight) backlight assembly.Backlight assembly can be according to the difference of its structure, and is divided into two kinds of side-light type backlight assembly and direct type backlight assemblies.The design of direct type backlight assembly, be to place as the fluorescent tube of light source under the backlight assembly, because of accommodation space becomes big, so can use the fluorescent tube more than two to increase the intensity of light source, but relatively also increased the thickness of backlight assembly and the power consumption of fluorescent tube, thereby be applicable to portability and the more not fastidious general LCD of space requirement; And the side-light type backlight assembly adopts single tubes or many tubes to be positioned over the one-sided or both sides of light guide plate usually, with as light source, utilizes the light guide plate design that is flat board or wedge shape to strengthen control to light going direction so that the brightness uniformity of display.
With reference to Fig. 1, the structure of known side-light type backlight assembly is illustrated.Fig. 1 is the exploded view that shows the liquid crystal indicator 100 that uses known side-light type backlight assembly.This LCD device 100 comprises: a liquid crystal panel 110, a housing 180, with and inner side-light type backlight assembly, include the protection diffusion sheet 120 that is positioned at the outside, go up prismatic lens (going up concentration piece) 130, down prismatic lens (following concentration piece) 140, be positioned at inboard diffusion sheet 150, light guide plate 160, reflector plate 170, as the fluorescent tube 190 and the light source reflector 195 of light source.
The cold cathode fluorescent lamp of fluorescent tube 190 general normal use high-pressure mercury fluorescent light designs (Cold CathodeFluorescent Lamp, CCFL).Fluorescent tube 190 is as light source, is arranged at least one side of light guide plate 160, with light directive light guide plate 160; Light source reflector 195 then is arranged at fluorescent tube 190 outsides, has the opening towards light guide plate 160, and medial surface is provided with the light reflecting material, in order to light reflection that fluorescent tube 190 is sent to optical waveguide layer, to improve the light utilization ratio of fluorescent tube 190.
The effect of light guide plate 160 is the scattering direction of direct light line, is used for improving the demonstration briliancy of liquid crystal indicator 100, and guarantees the homogeneity of liquid crystal panel 110 brightness.The effect of reflector plate 170 then is and will penetrates in the light reflected back light guide plate 160 of light conductor, to improve the light utilization ratio.More be provided with light modulation site 165 between light guide plate 160 and the reflector plate 170, in order to adjust the briliancy uniformity coefficient of LCD.
The effect of inboard diffusion sheet 150 is light scatter, to adjust the uniformity coefficient of light.Last prismatic lens 130 is to increase the brightness that backlight assembly produces with the main effect of following prismatic lens 140 (being also referred to as concentration piece), and the protection diffusion sheet 120 in the outside act as the protection prismatic lens, it is injured that prismatic lens is difficult for.
Yet; the shortcoming of above-mentioned side-light type liquid crystal indicator 100 is: during the assembling backlight assembly; need protection diffusion sheet 120; last prismatic lens 130; following prismatic lens 140; be positioned at inboard diffusion sheet 150; light guide plate 160; reflector plate 170; assembled as assemblies such as the fluorescent tube 190 of light source and light source reflectors 195; especially diffusion sheet 120; 150; prismatic lens 130; 140; light guide plate 160; reflector plate 170 grades are the form of blooming piece; consumed time is long when assembling; and these blooming pieces are all easily by scratch; so when assembling, need extreme care, make manufacturing cost too high.
Summary of the invention
In view of this, a purpose of the present invention is to propose a kind of side-light type backlight assembly and liquid crystal indicator, and the leaded light component that diffusion sheet, light guide plate and reflector plate in the known side-light type backlight assembly are made of one is to simplify technology, be convenient to assembling, reduce the artificial demand of adjusting.
The present invention discloses a kind of side-light type backlight assembly, and this side-light type backlight assembly comprises a leaded light component, at least one light source, a light source reflector and prismatic lens.Leaded light component has an optical waveguide layer, a reflection horizon and a scattering layer, and optical waveguide layer has relative first and second, and scattering layer is attached to first, and the reflection horizon is attached to second.Light source is arranged at least one side of leaded light component, with light directive optical waveguide layer; And light source reflector is arranged at the light source outside, has the opening towards optical waveguide layer, and the inboard is provided with the light reflecting material, with the light reflection of light source to optical waveguide layer.Prismatic lens is set in parallel in the scattering layer side (can be provided with one or two) of leaded light component, and its outer example can be provided with a protection diffusion sheet.
In addition, the present invention more discloses a kind of side-light type liquid crystal indicator, has a leaded light component, at least one light source, a light source reflector, prismatic lens, protection diffusion sheet and liquid crystal panel.Leaded light component has an optical waveguide layer, a reflection horizon and a scattering layer, and optical waveguide layer has relative first and second, and scattering layer is attached to first, and the reflection horizon is attached to this second.Light source is arranged at least one side of leaded light component, with light directive optical waveguide layer; And light source reflector is arranged at the light source outside, has the opening towards optical waveguide layer, and the inboard is provided with the light reflecting material, and the light of light source is reflected into optical waveguide layer.Prismatic lens is set in parallel in the scattering layer side of leaded light component, and the protection diffusion sheet is set in parallel in the opposite side of prismatic lens with respect to leaded light component, and its outside is provided with liquid crystal panel.In addition, can with a housing leaded light component, light source, light source reflector, prismatic lens and protection diffusion sheet be coated again.
In side-light type backlight assembly of the present invention and the liquid crystal indicator, the reflection horizon can be attached to the another side of the mode of coating coating or attaching (for example with) leaded light component with respect to this light source, to improve the light utilization ratio.Again, the scattering layer of leaded light component can use impression (printing) mode or UV rayed (UV-Curing) mode of solidifying to be attached on the optical waveguide layer.
In addition, the light reflected wavelength range in reflection horizon is preferably 400～700nm, and the UV optical range about wavelength 320-380nm makes light transmission or absorption, to avoid because of reflection UV light accelerated deterioration optical waveguide layer and other optical diaphragm assembly.In addition, the refractive index of the scattering layer of leaded light component preferably is less than or equal to the refractive index of optical waveguide layer, so that light produces total reflection in optical waveguide layer, the light that light source is sent is incident upon whole optical waveguide layers, and the homogeneity of adjustable backlight assembly.
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, cited below particularly one concrete preferred embodiment, and be described with reference to the accompanying drawings.
Description of drawings:
Fig. 1 is to use the exploded view of the liquid crystal indicator of known side-light type backlight assembly.
Fig. 2 is the synoptic diagram of leaded light component in the side-light type backlight assembly of one embodiment of the invention.
Fig. 3 is the exploded view of the side-light type backlight assembly of the foregoing description.
Fig. 4 is the graph of a relation of optical source wavelength and light intensity in the expression side-light type backlight assembly of the present invention.
The reference numeral explanation:
10～liquid crystal panel;
20～protection diffusion sheet;
30～upward prismatic lenses;
40～following prismatic lens;
50～leaded light component;
52～optical waveguide layer; 54～scattering layer; 56～reflection horizon;
60～light source (fluorescent tube);
65～light source reflector;
100～liquid crystal indicator;
110～liquid crystal panel;
120～protection diffusion sheet;
130～upward prismatic lenses (going up concentration piece);
140～following prismatic lens (following concentration piece);
150～diffusion sheet;
160～light guide plate;
165～light modulation site;
170～reflector plate;
180～housing;
190～light source (fluorescent tube);
195～light source reflector.
Embodiment:
With reference to Fig. 2 and Fig. 3, side-light type backlight assembly of the present invention and liquid crystal indicator are described with an embodiment.
Side-light type backlight assembly of the present invention, with the main difference of known side-light type backlight assembly, be that the present invention is the leaded light component that diffusion sheet, light guide plate and reflector plate in the known side-light type backlight assembly are made of one, to simplify technology, be convenient to assembling, reduce the artificial demand of adjusting.
Leaded light component 50 as shown in Figure 2 has an optical waveguide layer 52, a scattering layer 54 and a reflection horizon 56.Optical waveguide layer 52 promptly is equivalent to the light guide plate in the known technology, its role is to guide light to penetrate the direction of backlight assembly, is used for improving the demonstration briliancy of liquid crystal indicator, and guarantees the homogeneity of liquid crystal panel lightness.Optical waveguide layer 52 has relative first (be among Fig. 2 top) and second (be among Fig. 2 following), and scattering layer 54 is attached to first, and reflection horizon 56 is attached to second.When making leaded light component 50, normally earlier with a slice light guide plate as optical waveguide layer 52, reflection horizon 56 is plated in modes such as sputter plating or evaporations at its second, and then will use impression (printing) mode be attached on first of optical waveguide layer 52 as the scattering material of scattering layer 54, or with scattering material be coated on first of optical waveguide layer 52 go up after, make it be solidified to form scattering layer 54 in UV rayed (UV-Curing) mode of solidifying.
In this mandatory declaration, the scattering material of scattering layer 52 generally can use materials such as PET or PC as base material, and mixes scattering particle therein, for example materials such as PMMA, PS, PU.Usually, the diameter of scattering particle can obtain preferable dispersion effect between 10～100 μ m.
In addition, the refractive index of scattering layer 54 preferably is less than or equal to the refractive index of optical waveguide layer 52, so that light produces total reflection in optical waveguide layer 52, so more easily makes light be incident upon whole optical waveguide layers, and adjusts the homogeneity of backlight assembly easily.
Above-mentioned leaded light component 50 can be the part of diffusion sheet, light guide plate and reflector plate in the known side-light type backlight assembly of generation after making and finishing, and constitutes backlight assembly as shown in Figure 3.
Fig. 3 is the exploded view that shows the liquid crystal indicator that uses side-light type backlight assembly of the present invention.This liquid crystal indicator has a liquid crystal panel 10 and its inner side-light type backlight assembly, include the protection diffusion sheet 20 that is positioned at the outside, go up prismatic lens (going up concentration piece) 30, down prismatic lens (following concentration piece) 40, leaded light component 50, as the fluorescent tube 60 and the light source reflector 65 of light source.Last prismatic lens 30 is scattering layer 52 sides that are set in parallel in leaded light component 50 with following prismatic lens 40, and protection diffusion sheet 20 then is set in parallel in prismatic lens 30,40 opposite sides with respect to leaded light component 50.The function of protection diffusion sheet 20, last prismatic lens 30, each assembly such as following prismatic lens 40, fluorescent tube 60 and light source reflector 65 no longer repeats at this all respectively in the known technology it being described.In addition, though not shown among Fig. 3, can with a housing assemblies such as leaded light component 50, fluorescent tube (light source) 60, light source reflector 65, prismatic lens 30,40 and protection diffusion sheet 20 be coated again.
In this mandatory declaration, among Fig. 3, owing to only be arranged at a side (being the left side of Fig. 3) of leaded light component 50 as the fluorescent tube 60 of light source, therefore leaded light component 50 can be arranged to reflection horizon 56 is attached to the another side (be the right side of Fig. 3) of leaded light component 50 with respect to fluorescent tube 60, so that further improve the light utilization ratio.
The reflection horizon 56 of leaded light component 50 generally is to use silver or the contour reflective material of aluminium to carry out plated film and produce.Because cold cathode fluorescent lamp (the Cold CathodeFluorescent Lamp of fluorescent tube 60 general normal use high-pressure mercury fluorescent light designs, CCFL), the graph of a relation of its optical source wavelength and light intensity as shown in Figure 4, wherein can find out when wavelength of light during in the 350nm left and right sides, light just in time is UV light, makes optical waveguide layer 52 and other optical diaphragm assembly produce degradation phenomena easily.Therefore, preferably the UV optical range that reflection horizon 56 is arranged in about wavelength 320-380nm makes light transmission or absorption, to avoid because of reflection UV light accelerated deterioration optical waveguide layer 52 and other optical diaphragm assembly.Generally speaking, the light reflected wavelength range in reflection horizon 56 is preferable in 400～700nm left and right sides.
According to side-light type backlight assembly of the present invention and liquid crystal indicator, owing to the leaded light component 50 that diffusion sheet, light guide plate or reflector plate in the known side-light type backlight assembly are made of one, therefore can reach the simplification processing procedure, be convenient to assembling, reduce the artificial demand of adjusting.Simultaneously, the light reflection wavelength in the reflection horizon 56 by leaded light component 50 and the control of transmittance wavelength can filter the UV light that fluorescent tube 60 is produced, to reduce optical waveguide layer 52 or other optical diaphragm assembly problem because of UV rayed accelerated deterioration.
Though the present invention discloses as above with concrete preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; still can do a little change and retouching, so protection scope of the present invention is worked as with being as the criterion that claims were defined.
Claims (16)
1. side-light type backlight assembly comprises:
One leaded light component, this leaded light component has: an optical waveguide layer, a reflection horizon and a scattering layer, this optical waveguide layer have relative first and second, and this scattering layer is attached to this first, and this reflection horizon is attached to this second;
At least one is arranged at least one side of this leaded light component and with the light source of this optical waveguide layer of light directive;
One is arranged at the light source reflector of this light source outside, and this light source reflector has the opening towards this optical waveguide layer, and the inboard is provided with the light reflecting material, with the light reflection of this light source to this optical waveguide layer; And
Be set in parallel in the prismatic lens of the described scattering layer side of this leaded light component.
2. side-light type backlight assembly as claimed in claim 1 is characterized in that: this reflection horizon also is attached on the another side of this leaded light component with respect to this light source.
3. side-light type backlight assembly as claimed in claim 1 is characterized in that: comprise that one is set in parallel in the protection diffusion sheet of this prismatic lens with respect to the opposite side of this leaded light component.
4. side-light type backlight assembly as claimed in claim 1 is characterized in that: this scattering layer of this leaded light component is to be attached on this optical waveguide layer in the impression mode.
5. side-light type backlight assembly as claimed in claim 1 is characterized in that: this scattering layer of this leaded light component is to be attached on this optical waveguide layer with UV rayed curing mode.
6. side-light type backlight assembly as claimed in claim 1 is characterized in that: the light reflected wavelength range in this reflection horizon is 400～700nm.
7. side-light type backlight assembly as claimed in claim 1 is characterized in that: the transmittance absorbing wavelength scope in this reflection horizon is 320～380nm.
8. side-light type backlight assembly as claimed in claim 1 is characterized in that: the refractive index of this scattering layer of this leaded light component is the refractive index that is less than or equal to this optical waveguide layer.
9. side-light type liquid crystal indicator comprises:
One leaded light component, this leaded light component have an optical waveguide layer, a reflection horizon and a scattering layer, and this optical waveguide layer has relative first and second, and this scattering layer is attached to this first, and this reflection horizon is attached to this second;
At least one is arranged at least one side of this leaded light component and with the light source of this optical waveguide layer of light directive;
One is arranged at the light source reflector of this light source outside, and this light source reflector has the opening towards this optical waveguide layer, and the inboard is provided with the light reflecting material, with the light reflection of this light source to this optical waveguide layer;
One is set in parallel in the prismatic lens of this scattering layer side of this leaded light component;
One is set in parallel in the protection diffusion sheet of this prismatic lens with respect to the opposite side of this leaded light component; And
One is set in parallel in the liquid crystal panel of this protection diffusion sheet with respect to the opposite side of this prismatic lens.
10. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: this reflection horizon also is attached to the another side of this leaded light component with respect to this light source.
11. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: also comprise a housing, this housing is arranged at a side of this liquid crystal panel, coats this leaded light component, this light source, this light source reflector, this prismatic lens and this protection diffusion sheet.
12. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: this scattering layer of this leaded light component is to be attached on this optical waveguide layer in the impression mode.
13. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: this scattering layer of this leaded light component is to be attached on this optical waveguide layer with UV rayed curing mode.
14. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: the light reflected wavelength range in this reflection horizon is 400～700nm.
15. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: the transmittance absorbing wavelength scope in this reflection horizon is 320～380nm.
16. side-light type liquid crystal indicator as claimed in claim 9 is characterized in that: the refractive index of this scattering layer of this leaded light component is the refractive index less than this optical waveguide layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143060 CN1567055A (en) | 2003-06-18 | 2003-06-18 | Side light type backlight assembly and LCD apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143060 CN1567055A (en) | 2003-06-18 | 2003-06-18 | Side light type backlight assembly and LCD apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1567055A true CN1567055A (en) | 2005-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03143060 Pending CN1567055A (en) | 2003-06-18 | 2003-06-18 | Side light type backlight assembly and LCD apparatus |
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|---|---|
| CN (1) | CN1567055A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101980059A (en) * | 2010-08-30 | 2011-02-23 | 应骏 | Light transmission panel and display image correcting method thereof |
| CN101672949B (en) * | 2008-09-12 | 2012-07-18 | 中国科学院化学研究所 | Organic-inorganic hybrid film with photoconductive property and total reflection characteristic and preparation method thereof |
| CN102809844A (en) * | 2012-08-14 | 2012-12-05 | 深圳市华星光电技术有限公司 | Method and equipment for assembling backlight module |
| CN104021731A (en) * | 2013-03-01 | 2014-09-03 | 群创光电股份有限公司 | Display device |
| CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
| CN106053402A (en) * | 2015-04-09 | 2016-10-26 | 采钰科技股份有限公司 | Detection device for specimens |
| CN109828410A (en) * | 2018-08-03 | 2019-05-31 | 海迪科（南通）光电科技有限公司 | A kind of display of novel LED backlight mould group |
| WO2022088453A1 (en) * | 2020-11-02 | 2022-05-05 | 浙江天月科技有限公司 | Flexible display |
-
2003
- 2003-06-18 CN CN 03143060 patent/CN1567055A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672949B (en) * | 2008-09-12 | 2012-07-18 | 中国科学院化学研究所 | Organic-inorganic hybrid film with photoconductive property and total reflection characteristic and preparation method thereof |
| CN101980059A (en) * | 2010-08-30 | 2011-02-23 | 应骏 | Light transmission panel and display image correcting method thereof |
| CN101980059B (en) * | 2010-08-30 | 2012-12-19 | 应骏 | Light transmission panel and display image correcting method thereof |
| CN102809844A (en) * | 2012-08-14 | 2012-12-05 | 深圳市华星光电技术有限公司 | Method and equipment for assembling backlight module |
| CN102809844B (en) * | 2012-08-14 | 2015-02-18 | 深圳市华星光电技术有限公司 | Method and equipment for assembling backlight module |
| CN104021731A (en) * | 2013-03-01 | 2014-09-03 | 群创光电股份有限公司 | Display device |
| CN104375324A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Backlight module and display with the same |
| CN106053402A (en) * | 2015-04-09 | 2016-10-26 | 采钰科技股份有限公司 | Detection device for specimens |
| CN109828410A (en) * | 2018-08-03 | 2019-05-31 | 海迪科（南通）光电科技有限公司 | A kind of display of novel LED backlight mould group |
| WO2022088453A1 (en) * | 2020-11-02 | 2022-05-05 | 浙江天月科技有限公司 | Flexible display |
| US11828970B1 (en) | 2020-11-02 | 2023-11-28 | Zhejiang Tianyue Technology Co., Ltd | Flexible display |
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