CN201909229U - Backlight module and liquid crystal display with same - Google Patents
Backlight module and liquid crystal display with same Download PDFInfo
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- CN201909229U CN201909229U CN2010205558045U CN201020555804U CN201909229U CN 201909229 U CN201909229 U CN 201909229U CN 2010205558045 U CN2010205558045 U CN 2010205558045U CN 201020555804 U CN201020555804 U CN 201020555804U CN 201909229 U CN201909229 U CN 201909229U
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Abstract
The utility model discloses a backlight module which comprises an optical fiber laser and a plurality of light guiding optical fibers, wherein the light guiding optical fibers are respectively connected with the optical fiber laser to transmit the laser transmitted by the optical fiber laser, each light guiding optical fiber comprises a refracting surface and a total-reflecting surface, the laser which is incident to the total-reflecting surface is totally reflected, one part of the laser which is incident to the refracting surface is reflected, the other part of the laser is transmitted out of the light guiding optical fibers to from a linear light source, and the light guiding optical fibers are evenly and consistently arranged to form a surface light source. The backlight module is reasonable in structure, high in brightness, and good in monochromaticity. Furthermore, the utility model provides a liquid crystal display with the backlight module, compared with the conventional liquid crystal display, the liquid crystal display with the backlight module can reduce a colorful light filter piece and an optical filtering piece, and is small in depth, energy-saving, high in brightness, good in monochromaticity, large in display color domain range, and higher in the picture display quality.
Description
Technical field
The utility model relates to a kind of laser display technology, relates in particular to a kind of laser that utilizes as the module backlight of backlight and have the LCD of this module backlight.
Background technology
The structure of LCD (Liquid Crystal Display is called for short LCD) mainly comprises liquid crystal panel 2 and module backlight 1 two large divisions as shown in Figure 1; Thin Film Transistor-LCD with present main flow is that example describes, the structure of liquid crystal panel 2 as shown in Figure 2, comprise the first stacked successively polaroid 21, first glass substrate 22, thin film transistor (TFT) (THIN FILM TRANSISTOR, be called for short TFT) 23, liquid crystal 24, second glass substrate 25, the colored filter 26 and second polaroid 27, wherein, first polaroid 21 is over against backlight liquid crystal display module 1, the white light (non-polarized light) of the homogeneous and bright that penetrates from module backlight 1, successively through first polarizer 21, the liquid crystal 24 and second polarizer 27 penetrate, electric field action can make liquid crystal molecule turn to, can control the brightness of the light of final ejaculation by the voltage at control liquid crystal 24 two ends, because liquid crystal 24 itself does not have color, so produce shades of colour with colored filter 26, in color LCD, each pixel is divided into three unit or claims sub-pixel, additional optical filter is the mark redness respectively, green and blue, three sub-pixels can independently be controlled, and corresponding pixel has just produced thousands of even up to a million kinds of colors; The structure of module 1 backlight as shown in Figure 3, it mainly comprises stacked successively LED lamp 11, reflector plate 12, LGP 13, diffusion sheet 14, prismatic lens 15 and brightening piece 16, the light that LED lamp 11 sends forms uniform white light (non-polarized light) through multi-layer optical membrane, behind the equal light action and light harvesting effect raising brightness of diffusion sheet 14, inject first polaroid 21 of liquid crystal panel 2, the white light (non-polarized light) of the homogeneous and bright that penetrates from module backlight 1 is by first polaroid 21, the liquid crystal 24 and second polaroid 27 can be controlled brightness, can control color by 26 of colorized optical filterings, thereby realize colored the demonstration.
Backlight in the module backlight of traditional LC D mostly adopts CCFL, CCFL module backlight and LED-backlit module difference structurally are also little, it is the difference that light source is chosen, CCFL is as very ripe and be widely used in the application of LCD by light source, have a lot of extraordinary characteristics mainly due to CCFL, for example splendid white light source, low-cost, high efficiency, reliable and stable and predictable operating characteristics, and brightness can change easily, advantage such as in light weight, but CCFL is owing to be subjected to self color, the restriction of power consumption and mercurous aspect, make it show following three big shortcomings: (1) CCFL light leakage phenomena is general, the cold-starting difficulty, the response time is longer; (2) contain a spot of mercury among the CCFL, do not meet environmental protection standard; (3) the CCFL gamut range is little, generally can only reach 72% of NTSC (abbreviation of full name " National Television Systems Committee ", Chinese is " national television system committee ") gamut standards, and the color that presents is abundant inadequately.
Be accompanied by the continuous progress of science and technology and improving constantly of the people's level of consumption and the environmental protection meaning, utilize CCFL can not satisfy the demand of people high-quality screen as the picture that backlight presented in the module backlight of LCD; Simultaneously because LED in recent years development and breakthrough, makes LED be expected to substitute CCFL as the application of backlight, LED is that as the remarkable advantage of backlight it can enlarge color reducibility and have the superelevation contrast; By selecting the LED of suitable wave band, the color rendition scope in LED-backlit source can arrive more than 105% even 120% of NTSC gamut standards.But there is its shortcoming equally in the LED-backlit source: (1) brightness is not high enough, and a plurality of LED need be set, thereby power consumption is increased; (2) a plurality of LED of She Zhiing will make whole LCD temperature raise when work, therefore need increase cooling system and sensor to solve the too high defective of temperature, thereby cause whole LCD thickness to increase; In summary, LED is as the greatest drawback of the backlight of LCD that its brightness is not enough and the power consumption that causes and the increase of thickness.
Therefore need further a kind of laser that utilizes of research and development as backlight and module backlight rational in infrastructure, that gamut range is big, brightness is high.
The utility model content
The purpose of this utility model is to provide a kind of rational in infrastructure, gamut range is big and brightness is high module backlight.
Another purpose of the present utility model is to provide a kind of LCD, and described backlight liquid crystal display modular structure is reasonable, gamut range is big and brightness is high.
To achieve these goals, the technical solution of the utility model is: a kind of module backlight is provided, described module backlight comprises optical fiber laser and some light-conductive optic fibres, described light-conductive optic fibre is connected with described optical fiber laser respectively and transmits the laser that described optical fiber laser sends, described light-conductive optic fibre has plane of refraction and fully reflecting surface, the laser that is incident to described fully reflecting surface is by total reflection, a laser part that is incident on the described plane of refraction is reflected, another part transmits described light-conductive optic fibre and forms line source, and some described light-conductive optic fibre uniformities ground is arranged and formed area source.
Preferably, described optical fiber laser comprises the red light fibre laser that sends red light, the blue light fibre laser that sends blue light and the green light fibre laser that sends green light.
Preferably, described light-conductive optic fibre comprises red light-conductive optic fibre, green light-conductive optic fibre and blue light-conductive optic fibre, described red light-conductive optic fibre, green light-conductive optic fibre, blue light-conductive optic fibre unanimity are arranged the formation area source in an orderly manner, each red light-conductive optic fibre, green light-conductive optic fibre, blue the light-conductive optic fibre sub-pixel with thin film transistor (TFT) (being TFT) array respectively are corresponding, red, green, blue three look light-conductive optic fibres are arranged in one group and corresponding with one group of pixel of thin film transistor (TFT) (being TFT) array, and some light-conductive optic fibres launch uniformity ground in order and arrange the formation area source.
The utility model provides a kind of LCD simultaneously, described LCD comprises liquid crystal panel and module backlight, wherein, described module backlight comprises optical fiber laser and some light-conductive optic fibres, described light-conductive optic fibre is connected with described optical fiber laser respectively and transmits the laser that described optical fiber laser sends, described light-conductive optic fibre has plane of refraction and fully reflecting surface, the laser that is incident to described fully reflecting surface is by total reflection, a laser part that is incident on the described plane of refraction is reflected, another part transmits described light-conductive optic fibre and forms line source, some described light-conductive optic fibre uniformities ground is arranged and is formed area source, and described area source is over against described liquid crystal panel.
Preferably, described liquid crystal panel comprises the first stacked successively glass substrate, thin film transistor (TFT), liquid crystal layer, second glass substrate and polaroid, described first glass substrate is over against the area source of described module backlight, adopt the LCD of module backlight to make and save a polarizer of the prior art and colored filter in the liquid crystal panel structure, make structure more frivolous.
Compared with prior art, because the utility model module backlight adopts laser as backlight, the laser that optical fiber laser produced forms line source by light-conductive optic fibre, and the light-conductive optic fibre of being arranged by uniformity changes into area source, realized forming the rational deployment of area source, reduced energy loss, reached purpose of energy saving with spot light, make simultaneously to show that gamut range is big and brightness is high, also make the simple in structure of module backlight; In addition, LCD with above-mentioned module backlight, the laser itself that one side is utilized optical fiber laser and produced just is polarised light and is the characteristic of the high monochromatic light of a kind of excitation, make LCD of the present utility model need not to be provided with the color filer and first polarized light piece in the conventional art, thereby can reduce the thickness of LCD, realize ultra-thinization of LCD, improved the utilization rate of light simultaneously, conserve energy; On the other hand, the laser that optical fiber laser produced forms line source by light-conductive optic fibre, and changes into area source by line source, makes LCD brightness height of the present utility model, monochromaticjty good, improve the demonstration gamut range of LCD greatly, realize higher picture display quality.
Description of drawings
Fig. 1 is the structural representation of available liquid crystal display.
Fig. 2 is the structural representation of the liquid crystal panel of available liquid crystal display.
Fig. 3 is the structural representation of the module backlight of available liquid crystal display.
Fig. 4 is the structural representation of the utility model module backlight.
Fig. 5 is the principle schematic of the light-conductive optic fibre of the utility model module backlight.
Fig. 6 is the structural representation of the utility model LCD.
The specific embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.
As Fig. 4, shown in Figure 5, the utility model module 10 backlight comprises optical fiber laser 110 and some light-conductive optic fibre groups 120, light-conductive optic fibre group 120 is connected with optical fiber laser 110 respectively and transmits the laser that described optical fiber laser 110 sends, and formation face is arranged on some described light-conductive optic fibre groups 120 uniformity ground; Light-conductive optic fibre group 120 comprises red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123, red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 launch uniformity ground in order and arrange, red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 all have plane of refraction 124 and fully reflecting surface 125, be incident to light-conductive optic fibre 121,122, laser on 123 the fully reflecting surface 125 is by total reflection, be incident to light-conductive optic fibre 121,122, laser part on 123 the plane of refraction 124 is reflected, another part transmits light-conductive optic fibre 121,122,123 form line source, each red light-conductive optic fibre 121, green light-conductive optic fibre 122, the sub-pixel (row or column) with thin film transistor (TFT) (being TFT) array is corresponding respectively for blue light-conductive optic fibre 123, three look light-conductive optic fibres 121,122, the 123 light-conductive optic fibre groups 120 that are arranged in are corresponding with one group of pixel (row or column) of thin film transistor (TFT) (being TFT) array; Because red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 orders are arranged and are formed light-conductive optic fibre group 120, be arranged in face some light-conductive optic fibre group 120 uniformities, therefore, line source after all light-conductive optic fibre 121,122,123 outgoing changes into area source, be appreciated that ground, the shape of light-conductive optic fibre 121,122,123 can be designed to circle, triangle, rectangle, semicircle etc. according to actual needs; Wherein, optical fiber laser 110 includes the red light fibre laser 111 that sends red light, send the green light fibre laser 112 of green light and send the blue light fibre laser 113 of blue light, the red light that red light fibre laser 111 sends transfers to an end of red light-conductive optic fibre 121 and incides in the red light-conductive optic fibre 121, the green light that green light fibre laser 112 sends transfers to an end of green light-conductive optic fibre 122 and incides in the green light-conductive optic fibre 122, the blue light that blue light fibre laser 113 sends is transferred to an end of blue light-conductive optic fibre 123 and incides in the blue light-conductive optic fibre 123, laser is at light-conductive optic fibre 121,122, in the process of transmitting in 123, be incident to light-conductive optic fibre 121,122, light on 123 the fully reflecting surface 125 is by total reflection, be incident to light-conductive optic fibre 121,122, light part on 123 the plane of refraction 124 is by partial reflection, a part transmits light-conductive optic fibre 121,122,123 form line source, because red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 orders are arranged and are formed light-conductive optic fibre group 120, some light-conductive optic fibre groups 120 are arranged in face with launching uniformity in order, therefore through all light-conductive optic fibres 121,122, the light of 123 outputs forms area source, by light-conductive optic fibre 121,122,123 with optical fiber laser 110 produced red, green, blue three look laser form line source, again line source is changed into area source, realized forming the rational deployment of area source, made the simple in structure of module backlight with spot light.
Shown in Fig. 4-6, the LCD that the utility model provides comprises liquid crystal panel 20 and module backlight 10, liquid crystal panel 20 is towards the exit end of the area source of module 10 backlight, wherein, module 10 backlight comprises optical fiber laser 110 and some light-conductive optic fibre groups 120, light-conductive optic fibre group 120 is connected with optical fiber laser 110 respectively and transmits the laser that described optical fiber laser 110 sends, some light-conductive optic fibre groups 120 uniformity ground are arranged, and light-conductive optic fibre group 120 comprises red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123, red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 uniformity ground are in order arranged formation face, each red light-conductive optic fibre 121, green light-conductive optic fibre 122, the sub-pixel (row or column) with thin film transistor (TFT) (being TFT) array is corresponding respectively for blue light-conductive optic fibre 123, three look light-conductive optic fibres 121,122, the 123 light optical fiber groups 120 that are arranged in are corresponding with one group of pixel (row or column) of thin film transistor (TFT) (being TFT) array, red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 all have plane of refraction 124 and fully reflecting surface 125, be incident to light-conductive optic fibre 121,122, laser on 123 the fully reflecting surface 125 is by total reflection, be incident to light-conductive optic fibre 121,122, laser part on 123 the plane of refraction 124 is reflected, another part transmits light-conductive optic fibre 121,122,123 form line source, because red light-conductive optic fibre 121, green light-conductive optic fibre 122 and blue light-conductive optic fibre 123 orders are arranged and are formed light-conductive optic fibre group 120, be arranged in face some light-conductive optic fibre group 120 uniformities, therefore, line source changes into area source after 120 outgoing of light-conductive optic fibre group, and the exit direction of described area source is over against liquid crystal panel 20; The optical fiber laser 110 of LCD comprises the red light fibre laser 111 that sends red light, the green light fibre laser 112 that sends green light and the blue light fibre laser 113 that sends blue light, and the laser that red light fibre laser 111, green light fibre laser 112, blue light fibre laser 113 send transfers to transmission in the light-conductive optic fibre 121,122,123 respectively; Liquid crystal panel 20 comprises the first stacked successively glass substrate 210, thin film transistor (TFT) (is THIN FILM TRANSISTOR, be called for short TFT) 220, liquid crystal layer 230, second glass substrate 240 and polaroid 250, described first glass substrate 210 is over against the exit direction of the area source of described module 10 backlight, during work, the red light that red light fibre laser 111 sends enters transmission in the red light-conductive optic fibre 121, pass in the green light-conductive optic fibre 122 of the green light that green light fibre laser 112 sends, the blue light that blue light fibre laser 113 sends enters transmission in the blue light fibre laser 113, red, green, blue three look laser are at light-conductive optic fibre 121,122, in the process of transmitting in 123, be incident to light-conductive optic fibre 121,122, light on 123 the fully reflecting surface 125 is by total reflection, be incident to light-conductive optic fibre 121,122, light part on 123 the plane of refraction 124 is reflected, a part transmits light-conductive optic fibre 121,122,123 form line source, because the arrangement of some light-conductive optic fibre group 120 uniformities, therefore projecting line source through all light-conductive optic fibre groups 120 changes into area source, described area source shines on the liquid crystal panel 20, the conducting of under the effect of thin film transistor (TFT) (TFT) 220, switching on of liquid crystal layers 230 in the liquid crystal panel 20, make liquid crystal arrangement orderly, the area source that module 10 backlight sends illuminates the liquid crystal layer 230 of liquid crystal panel 20 and presents the color of needs, remove a polarized light piece of the prior art and color filer from, thereby can reduce the thickness of LCD, realize ultra-thinization of LCD, and improved the utilization rate of light, played energy-conservation effect.
Because the utility model adopts laser as the backlight in the module 10 backlight, the laser that optical fiber laser 110 is produced forms line source by light-conductive optic fibre 121,122,123, some light-conductive optic fibres 121,122,123 of arranging through uniformity form area source again, realized forming the rational deployment of area source with spot light, make that gamut range is big and brightness is high, also make the simple in structure of module 10 backlight, reduce energy loss simultaneously, reach purpose of energy saving; In addition, LCD with above-mentioned module backlight 10, the laser itself that optical fiber laser 110 produced on the one hand just is polarised light, and be the high monochromatic light of a kind of excitation, make LCD of the present utility model need not to be provided with the color filer of the prior art and first polarized light piece, thereby can reduce the thickness of LCD, realize ultra-thinization of LCD, improved the utilization rate of light simultaneously, conserve energy; On the other hand, the laser that utilizes optical fiber laser 110 to be produced forms line source by light-conductive optic fibre 121,122,123, and change into area source by line source, make LCD brightness height of the present utility model, monochromaticjty good, improve the demonstration gamut range of LCD greatly, can reach more than 170% of NTSC gamut standards, realize higher picture display quality.
Above disclosed only is preferred embodiment of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (5)
1. module backlight, it is characterized in that: described module backlight comprises optical fiber laser and some light-conductive optic fibres, described light-conductive optic fibre is connected with described optical fiber laser respectively and transmits the laser that described optical fiber laser sends, described light-conductive optic fibre has plane of refraction and fully reflecting surface, the laser that is incident to described fully reflecting surface is by total reflection, a laser part that is incident on the described plane of refraction is reflected, another part transmits described light-conductive optic fibre and forms line source, and some described light-conductive optic fibre uniformities ground is arranged and formed area source.
2. module backlight as claimed in claim 1 is characterized in that: described optical fiber laser comprises the red light fibre laser that sends red light, the blue light fibre laser that sends blue light and the green light fibre laser that sends green light.
3. module backlight as claimed in claim 1, it is characterized in that: described light-conductive optic fibre comprises red light-conductive optic fibre, green light-conductive optic fibre and blue light-conductive optic fibre, and described red light-conductive optic fibre, green light-conductive optic fibre, blue light-conductive optic fibre unanimity are arranged the formation area source in an orderly manner.
4. LCD, comprise liquid crystal panel and module backlight, it is characterized in that: described module backlight comprises optical fiber laser and some light-conductive optic fibres, described light-conductive optic fibre is connected with described optical fiber laser respectively and transmits the laser that described optical fiber laser sends, described light-conductive optic fibre has plane of refraction and fully reflecting surface, the laser that is incident to described fully reflecting surface is by total reflection, a laser part that is incident on the described plane of refraction is reflected, another part transmits described light-conductive optic fibre and forms line source, some described light-conductive optic fibre uniformities ground is arranged and is formed area source, and described area source is over against described liquid crystal panel.
5. LCD as claimed in claim 4, it is characterized in that: described liquid crystal panel comprises the first stacked successively glass substrate, thin film transistor (TFT), liquid crystal layer, second glass substrate and polaroid, and described first glass substrate is over against the area source of described module backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205558045U CN201909229U (en) | 2010-09-30 | 2010-09-30 | Backlight module and liquid crystal display with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205558045U CN201909229U (en) | 2010-09-30 | 2010-09-30 | Backlight module and liquid crystal display with same |
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| Publication Number | Publication Date |
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| CN201909229U true CN201909229U (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205558045U Expired - Fee Related CN201909229U (en) | 2010-09-30 | 2010-09-30 | Backlight module and liquid crystal display with same |
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| CN (1) | CN201909229U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253530A (en) * | 2011-08-12 | 2011-11-23 | 冠捷显示科技（厦门）有限公司 | Novel full-color liquid crystal display (LCD) device |
| CN104075186A (en) * | 2014-06-16 | 2014-10-01 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN106094343A (en) * | 2016-08-23 | 2016-11-09 | 深圳市华星光电技术有限公司 | Backlight and liquid crystal display |
| WO2018082318A1 (en) * | 2016-11-02 | 2018-05-11 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| CN108153052A (en) * | 2018-01-02 | 2018-06-12 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
-
2010
- 2010-09-30 CN CN2010205558045U patent/CN201909229U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253530A (en) * | 2011-08-12 | 2011-11-23 | 冠捷显示科技（厦门）有限公司 | Novel full-color liquid crystal display (LCD) device |
| CN104075186A (en) * | 2014-06-16 | 2014-10-01 | 京东方科技集团股份有限公司 | Backlight source and display device |
| US9494729B2 (en) | 2014-06-16 | 2016-11-15 | Boe Technology Group Co., Ltd. | Backlight source and display device |
| CN106094343A (en) * | 2016-08-23 | 2016-11-09 | 深圳市华星光电技术有限公司 | Backlight and liquid crystal display |
| WO2018082318A1 (en) * | 2016-11-02 | 2018-05-11 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| US10613373B2 (en) | 2016-11-02 | 2020-04-07 | Boe Technology Group Co., Ltd. | Display panel and display device |
| CN108153052A (en) * | 2018-01-02 | 2018-06-12 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20130930 |