CN102109708A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
- Publication number
- CN102109708A CN102109708A CN2009101893347A CN200910189334A CN102109708A CN 102109708 A CN102109708 A CN 102109708A CN 2009101893347 A CN2009101893347 A CN 2009101893347A CN 200910189334 A CN200910189334 A CN 200910189334A CN 102109708 A CN102109708 A CN 102109708A
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- CN
- China
- Prior art keywords
- printing opacity
- matrix unit
- opacity matrix
- light
- liquid crystal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 97
- 239000000843 powder Substances 0.000 claims abstract description 47
- 239000011521 glass Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000007639 printing Methods 0.000 claims description 88
- 239000000084 colloidal system Substances 0.000 claims description 7
- 241001025261 Neoraja caerulea Species 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Abstract
The invention discloses a liquid crystal display device. The liquid crystal display device comprises a backlight module, a glass substrate and a light-transmitting matrix layer arranged on the glass substrate sequentially; the light-transmitting matrix layer comprises a first light-transmitting matrix unit, a second light-transmitting matrix unit and a third light-transmitting matrix unit; fluorescent powder which can generate red light when excited is coated on the first light-transmitting matrix unit; fluorescent powder which can generate green light when excited is coated on the second light-transmitting matrix unit; fluorescent powder which can generate blue light when excited is coated on the third light-transmitting matrix unit; and when the backlight module comprises a blue light light-emitting diode (LED), fluorescent powder is not coated on the third light-transmitting matrix unit. The liquid crystal display device improves lighting effect greatly, and reduces power consumption and cost; and heat dissipation performance of a liquid crystal display and the working stability of the liquid crystal display are improved.
Description
Technical field
The present invention relates to display technique field, plane, especially relate to a kind of liquid crystal indicator that contains phosphor powder layer.
Background technology
Show the field on plane of today, liquid crystal indicator reaches the main product that advantages such as hanging down radiation becomes market by feat of frivolous, low consumption, is widely used in fields such as mobile phone, notebook computer and LCD TV.
See also Fig. 1, Fig. 1 is a kind of existing Thin Film Transistor-LCD (TFT-LCD) diagrammatic cross-section.Wherein, module 11 backlight comprises elements such as white light LEDs 111, reflector plate 112, light guide plate 113 and diffuser plate, prismatic lens, and the white light that white light LEDs 111 is sent incides transparent glass substrate 12 via said elements.Transparent glass substrate 12 is provided with a plurality of thin film transistor (TFT)s (TFT) 121, white light arrives another transparent glass substrate 14 by the control of described thin film transistor (TFT) 121, and this transparent glass substrate 14 is provided with color filter film (TF) 141.White light promptly can show redness (R) or green (G) or blue (B) through the inferior pixel of red (R) on the color filter film (TF) 141 or green (G) or blue (B), is controlled at by the combination to this primaries at last and demonstrates coloured image on the LCD.
Because the LCD MODULE (LCM) of above-mentioned LCD contains the color filter film, can filter out a lot of light in LCD work, therefore the light of loss more than 60% can cause light efficiency lower, exist a large amount of luminous energy wastes, increased power consumption and cost; Simultaneously because white light LEDs generally can adopt fluorescent powder, and with led chip and fluorescent powder is in-plant is packaged together, so both thermal values compare higherly, are unfavorable for the heat radiation of white light LEDs and LCD, have influenced the display effect of LCD.
Summary of the invention
The technical problem to be solved in the present invention is, at the weak heat-dissipating of the white light LEDs of the module backlight of prior art, light efficiency is low, power consumption and defect of high cost, provides a kind of good heat dissipation effect, light efficiency is higher and power consumption and lower-cost liquid crystal indicator.
In order to solve the problems of the technologies described above, the invention provides a kind of liquid crystal indicator, it comprises that described device comprises module backlight, the glass substrate that sets gradually and is located at printing opacity matrix layer on the described glass substrate;
A kind of liquid crystal indicator comprises module backlight, the glass substrate that sets gradually and is located at printing opacity matrix layer on the described glass substrate;
Described printing opacity matrix layer comprises the first printing opacity matrix unit, the second printing opacity matrix unit and the 3rd printing opacity matrix unit, the described first printing opacity matrix unit is coated with to be stimulated and can produces the fluorescent powder of ruddiness, the second printing opacity matrix unit is coated with to be stimulated and can produces the fluorescent powder of green glow, and the 3rd printing opacity matrix unit is coated with to be stimulated and can produces the fluorescent powder of blue light; When described module backlight comprises a blue-ray LED, the uncoated fluorescent powder of described the 3rd printing opacity matrix unit;
After the light that described module backlight sends passes described glass substrate, excite the fluorescent powder of described printing opacity matrix layer, produce ruddiness, produce green glow and produce blue light in the described first printing opacity matrix unit, by described ruddiness, green glow and blue light being carried out mixed light control and forming coloured image output in described the 3rd printing opacity matrix unit in the described second printing opacity matrix unit.
Further, the interval between the described first printing opacity matrix unit and the described second printing opacity matrix unit equates with interval between described the 3rd printing opacity matrix with the described second printing opacity matrix unit.
Further, the first printing opacity matrix unit of described printing opacity matrix layer, the second printing opacity matrix unit and the 3rd printing opacity matrix form two-dimensional array by certain bright dipping series arrangement, described bright dipping is ruddiness, green glow and blue light in proper order, or ruddiness, blue light and green glow, or green glow, ruddiness and blue light, or green glow, blue light and ruddiness, or blue light, green glow and ruddiness, or blue light, ruddiness and green glow.
Further, described module backlight comprises a blue purple LED or purple LED or ultraviolet LED.
Further, described module backlight is straight-down negative or side-light type module backlight.
Further, described fluorescent powder is coated on described printing opacity matrix layer by colloid.
Further, described colloid is an epoxy resin.
Further, also be provided with common electrode film and alignment film between described module backlight and the glass substrate.
Further, also be provided with diaphragm and polaroid successively above the described printing opacity matrix layer.
Liquid crystal indicator of the present invention adopts blue-light excited redness and green emitting phosphor to replace the color filter film, has improved light efficiency, has reduced power consumption and cost; Because the encapsulation of the led light source of its module backlight does not need fluorescent powder, therefore improve the heat dispersion of LCD simultaneously, improved the stability of LCD work.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the diagrammatic cross-section of existing Thin Film Transistor-LCD;
Fig. 2 is the diagrammatic cross-section of liquid crystal indicator preferred embodiment of the present invention.
Embodiment
See also Fig. 2, the liquid crystal indicator 200 of preferred embodiment of the present invention comprises module backlight 20, the glass substrate 21 that sets gradually and is located at printing opacity matrix layer 22 on the glass substrate 21.Also be provided with common electrode film (ITO) 23 and alignment film 24 between module 20 backlight and the glass substrate 21, printing opacity matrix layer 22 tops also are provided with diaphragm 25 and polaroid 26 successively.
Wherein, module 20 backlight comprises elements such as blue-ray LED, reflector plate, light guide plate, diffuser plate and prismatic lens, and described blue-ray LED sends blue light and penetrates from module 20 backlight via elements such as light guide plate, reflector plate and diffuser plates.Module 20 backlight is a straight-down negative in the present embodiment, and it also can adopt side-light type module backlight.
Printing opacity matrix layer 22 comprises that the interval between a plurality of first printing opacity matrix units 221 that are arranged in order, the second printing opacity matrix unit 222 and the 3rd printing opacity matrix unit 223, the first printing opacity matrix units 221 and the second printing opacity matrix unit 222 equates with interval between the 3rd printing opacity matrix 223 with the second printing opacity matrix unit 222.The surface-coated of this first printing opacity matrix unit 221 has to be stimulated and can produce the fluorescent powder of ruddiness, this fluorescent powder is red (R) fluorescent powder in the present embodiment, when blue light penetrates the first printing opacity matrix unit 221 that is coated with redness (R) fluorescent powder, can excite this redness (R) fluorescent powder particulate to produce ruddiness (R) outgoing; The surface-coated of the second printing opacity matrix unit 222 has to be stimulated and can produce the fluorescent powder of second wavelength light, this fluorescent powder is green (G) fluorescent powder in the present embodiment, when blue light penetrates the second printing opacity matrix unit 222 that is coated with green (G) fluorescent powder, can excite this green (G) fluorescent powder particulate to produce green glow (G) outgoing.And the 3rd printing opacity matrix unit 223 is the transparent medium (because the blue-ray LED of module 20 backlight emission blue light) of uncoated fluorescent powder, so blue light can directly see through outgoing from the 3rd printing opacity matrix unit 223, can form a RGB image pixel unit after the blue light incident this moment first printing opacity matrix unit 221, the second printing opacity matrix unit 222 and the 3rd printing opacity matrix unit 223.
Need to prove that above-mentioned redness (R) fluorescent powder and green (G) fluorescent powder stick on the printing opacity matrix layer 22 by cladding process.The data allotment fluorescent powder that can be according to actual needs and the concentration and the quantity of colloid stir, and apply in the process of (fluorescent powder and colloid are mixed) at fluorescent powder, guarantee that fluorescent powder can not precipitate, and concentration will remain unanimity.Colloid described in the present embodiment is an epoxy resin.
In addition, the general formula of above-mentioned redness (R) fluorescent powder is AM in the present embodiment
[a]O
[b]: Mn
[x]R
[y]Wherein, A is any one among Mg, Ca, Sr, Ba and the Zn; M is any one among Al, Ga, Y and the Gd; R is any one among Ce, Pr, Nd, Sm, Tb, Dy, Ho, Er, Tm and the Cu; And 0.9＜a＜25,3＜b＜40,0.001＜x＜1,0≤y＜0.5.
The manufacture method of above-mentioned redness (R) fluorescent powder is: according to general formula AM
[a]O
[b]: Mn
[x]R
[y]Simple substance, compound or corresponding salt and the flux of raw material A, M, Mn and R are mixed, synthetic by high temperature.The fluorescent powder medium particle diameter is 2～6 μ m.This fluorescent powder has characteristics such as chemical stability is good, luminous intensity is high, excitation wave length and width.
Above-mentioned green (G) fluorescent powder principal ingredient is TG:Eu (SrGa
2S
4: Eu
2+).
The first printing opacity matrix unit 221 of the printing opacity matrix layer 22 in the present embodiment, the second printing opacity matrix unit 222 and the 3rd printing opacity matrix 223 series arrangement form two-dimensional array, and its X-direction is identical with the structure of Y direction.
See also Fig. 2, after passing common electrode film 23 and alignment film 24, the blue light that penetrates from module backlight 20 upwards incides glass substrate 21, because glass substrate 21 is provided with printing opacity matrix layer 22, this blue light incides the first printing opacity matrix unit 221 of printing opacity matrix layer 22 respectively, the second printing opacity matrix unit 222 and the 3rd printing opacity matrix unit 223, redness (R) fluorescent powder that apply on the first printing opacity matrix unit 221 this moment is subjected to blue-light excited generation ruddiness (R) outgoing, and green (G) fluorescent powder that applies on the second printing opacity matrix unit 222 is subjected to blue-light excited generation green glow (G) outgoing; Simultaneously, blue light also can directly produce blue light (G) outgoing from the 3rd transparent printing opacity matrix unit 223.Can form a RGB image pixel unit (color dot) this moment.Because printing opacity matrix layer 22 is the first printing opacity matrix unit 221, the second printing opacity matrix unit 222 and the tactic successively two-dimensional array of the 3rd printing opacity matrix unit 223, so formed a plurality of RGB image pixels unit that " RGBRGB " arranges.The rgb light bundle of outgoing is adjusted through over-protective film 25 and polaroid 26, again through the reversing of the brilliant molecule of the regulator solution of overdriving, thereby forms coloured image output.
Be appreciated that, the first printing opacity matrix unit 221, the second printing opacity matrix unit 222 and the 3rd printing opacity matrix unit 223 of above-mentioned printing opacity matrix layer 22 also can be by other bright dipping series arrangement such as for example GBR, described bright dipping is ruddiness, green glow and blue light in proper order, or ruddiness, blue light and green glow, or green glow, ruddiness and blue light, or green glow, blue light and ruddiness, or blue light, green glow and ruddiness, or blue light, ruddiness and green glow, as long as can form the image pixel unit that comprises Red Green Blue.
Described blue-ray LED can also be short wavelength LED such as blue purple LED, purple LED or ultraviolet LED.In addition, the surface of the 3rd printing opacity matrix unit 223 also can apply to be stimulated as required and can produce the fluorescent powder of blue light, be preferably blueness (B) fluorescent powder, its irradiation that is subjected to described short wavelength LED excites and produces the blue light outgoing, carry out mixed light control formation image pixel unit with ruddiness and green glow, and form coloured image output with this with outgoing.
Than prior art, liquid crystal indicator of the present invention adopts blue-light excited redness and green emitting phosphor to replace the color filter film, need not to filter light, has therefore improved light efficiency greatly, has reduced power consumption and cost; Because the encapsulation of the led light source of its module backlight does not need fluorescent powder, therefore improve the heat dispersion of LCD simultaneously, improved the stability of LCD work.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (9)
1. a liquid crystal indicator is characterized in that, described device comprises module backlight, the glass substrate that sets gradually and is located at printing opacity matrix layer on the described glass substrate;
Described printing opacity matrix layer comprises the first printing opacity matrix unit, the second printing opacity matrix unit and the 3rd printing opacity matrix unit, the described first printing opacity matrix unit is coated with to be stimulated and can produces the fluorescent powder of ruddiness, the second printing opacity matrix unit is coated with to be stimulated and can produces the fluorescent powder of green glow, and the 3rd printing opacity matrix unit is coated with to be stimulated and can produces the fluorescent powder of blue light; When described module backlight comprises a blue-ray LED, the uncoated fluorescent powder of described the 3rd printing opacity matrix unit;
After the light that described module backlight sends passes described glass substrate, excite the fluorescent powder of described printing opacity matrix layer, produce ruddiness, produce green glow and produce blue light in the described first printing opacity matrix unit, by described ruddiness, green glow and blue light being carried out mixed light control and forming coloured image output in described the 3rd printing opacity matrix unit in the described second printing opacity matrix unit.
2. liquid crystal indicator according to claim 1 is characterized in that, the interval between the described first printing opacity matrix unit and the described second printing opacity matrix unit equates with interval between described the 3rd printing opacity matrix with the described second printing opacity matrix unit.
3. liquid crystal indicator according to claim 1 and 2, it is characterized in that, the first printing opacity matrix unit of described printing opacity matrix layer, the second printing opacity matrix unit and the 3rd printing opacity matrix form two-dimensional array by certain bright dipping series arrangement, described bright dipping is ruddiness, green glow and blue light in proper order, or ruddiness, blue light and green glow, or green glow, ruddiness and blue light, or green glow, blue light and ruddiness, or blue light, green glow and ruddiness, or blue light, ruddiness and green glow.
4. liquid crystal indicator according to claim 1 is characterized in that, described module backlight comprises a blue purple LED or purple LED or ultraviolet LED.
5. liquid crystal indicator according to claim 1 is characterized in that, described module backlight is straight-down negative or side-light type module backlight.
6. liquid crystal indicator according to claim 1 is characterized in that, described fluorescent powder is coated on described printing opacity matrix layer by colloid.
7. liquid crystal indicator according to claim 6 is characterized in that, described colloid is an epoxy resin.
8. liquid crystal indicator according to claim 1 is characterized in that, also is provided with common electrode film and alignment film between described module backlight and the glass substrate.
9. liquid crystal indicator according to claim 1 is characterized in that, described printing opacity matrix layer top also is provided with diaphragm and polaroid successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101893347A CN102109708A (en) | 2009-12-24 | 2009-12-24 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101893347A CN102109708A (en) | 2009-12-24 | 2009-12-24 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102109708A true CN102109708A (en) | 2011-06-29 |
Family
ID=44173907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101893347A Pending CN102109708A (en) | 2009-12-24 | 2009-12-24 | Liquid crystal display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267532A (en) * | 2014-10-21 | 2015-01-07 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| WO2015149334A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市华星光电技术有限公司 | Liquid crystal display and liquid crystal panel thereof |
| CN105093682A (en) * | 2015-09-08 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN105446009A (en) * | 2016-01-11 | 2016-03-30 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof, and display device |
-
2009
- 2009-12-24 CN CN2009101893347A patent/CN102109708A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015149334A1 (en) * | 2014-03-31 | 2015-10-08 | 深圳市华星光电技术有限公司 | Liquid crystal display and liquid crystal panel thereof |
| CN104267532A (en) * | 2014-10-21 | 2015-01-07 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
| CN104267532B (en) * | 2014-10-21 | 2017-09-26 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof and display device |
| CN105093682A (en) * | 2015-09-08 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN105093682B (en) * | 2015-09-08 | 2018-03-06 | 深圳市华星光电技术有限公司 | Liquid crystal display |
| CN105446009A (en) * | 2016-01-11 | 2016-03-30 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof, and display device |
| WO2017121131A1 (en) * | 2016-01-11 | 2017-07-20 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof and display device |
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Application publication date: 20110629 |