CN101285957A - Color liquid-crystal display - Google Patents
Color liquid-crystal display Download PDFInfo
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- CN101285957A CN101285957A CNA2007100908755A CN200710090875A CN101285957A CN 101285957 A CN101285957 A CN 101285957A CN A2007100908755 A CNA2007100908755 A CN A2007100908755A CN 200710090875 A CN200710090875 A CN 200710090875A CN 101285957 A CN101285957 A CN 101285957A
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Abstract
The invention relates a color liquid crystal display, comprising a photo converting component. The photo converting component comprises a plurality of photo converting zones and a plurality of euphotic zones; the position of each photo converting zone is corresponding to a red film filter and a green film filter; the position of each euphotic zone is corresponding to a blue film filter, so that blue light is converted into wide-band yellow light through the photo converting zone; the wide-band yellow light is converted into the required red light or green light after passing through the red film filter and the green film filter; at the same time, the blue light passing through the euphotic zones are not carried out the conversion of any wavelength, thereby improving brightness and saturation of red and green and intensifying displayed brightness and saturation of blue.
Description
Technical field
The present invention relates to a kind of colour liquid crystal display device, more be particularly to a kind of penetration or semi-penetration color LCD.
Background technology
Generally speaking, penetration color LCD is with white light irradiating liquid crystal box, utilizes its inner colored filter to filter, red to produce (R), green (G), blue (B) three primary colors, and then reach full-color effect.The generation of above-mentioned white light is with cold cathode ray tube (Cold Cathode FluorescentLamp; CCFL) or white light-emitting diode (LED) reach.
Please refer to Fig. 1, it shows display color LCD 100.LCD 100 includes a liquid crystal cell (liquid crystal cell) 140, and it is made up of two transparency carriers, 142,144 double teams, one liquid crystal layer 146,142,144 of two substrates and be provided with several color filter films 148.On the two substrates 142,144 outside liquid crystal cell 140, be respectively equipped with light polarizing film 150,130.Be provided with a backlight module 110 below light polarizing film 130, it includes white light source 112, for example a White LED.
After the white light that white light source 112 is produced passes light polarizing film 130, become the polarized light of tool particular polarization, reenter and be incident upon liquid crystal cell 140.White light behind the polarization becomes the light beam of three kinds of different colours of red, green, blue, different polarization direction through the colour filter of color filter film 148 and after the liquid crystal molecule effect after reversing, and becomes the different various coloured light of intensity after passing light polarizing film 150 again.At last, become full-color image behind the mixed light.
The generation of above-mentioned white light is that fluorescent material is coated on for example surface of LED encapsulating structure, perhaps is entrained in the inside of encapsulating structure, and this fluorescent material can be converted to white light with the blue light that LED produced.Because it is the preparation of fluorescent material must be considered the ratio that blue light blocking and gold-tinted excite, therefore comparatively difficult in preparation.Moreover after above-mentioned white light passed color filter film, colour purity that it represented and brightness were also satisfied not to the utmost.
In view of this, just have to propose a kind of colour liquid crystal display device, to promote its colour purity and brightness.
Summary of the invention
The object of the present invention is to provide a kind of colour liquid crystal display device, it can increase the blue brightness and the saturation degree of demonstration, and improves red with green brightness and saturation degree.
In one embodiment, this LCD comprises two transparency carriers, a liquid crystal layer, several red filter coatings, several green filter films, a backlight module, a smooth transition components and two light polarizing film.This liquid crystal layer is located between this two substrates, define several first areas, several second areas and several the 3rd zones on one in this two substrates, and these zones is between this two substrates.These red filter coatings are located on these first areas, and these green filter films then are located on these second areas.This backlight module has a blue-light source, and this backlight module is located at the below of this time transparency carrier.This light transition components comprises several light transition zones and several photic zones, this light transition components is located between this time transparency carrier and this backlight module, the position of these light transition zones is corresponding to these red filter coatings and these green filter films, and the position of these photic zones is corresponding to these grade in an imperial examination three zones.This two light polarizing film, one of them is located at transparency carrier top on this, and another is located between this light transition components and this time transparency carrier.
In another embodiment, this LCD comprises the reflection horizon of several openings of tool in addition, and this reflection horizon is located between this two transparency carrier, and is positioned on this time transparency carrier.
In order to allow above and other objects of the present invention, feature and the advantage can be more obvious, the embodiment of the invention cited below particularly, and conjunction with figs. elaborate.
Description of drawings
Fig. 1: be the synoptic diagram of display color LCD.
Fig. 2: be synoptic diagram according to the penetration color LCD of first embodiment of the invention.
Fig. 3: show the blue backlight of the penetration color LCD that is used in first embodiment of the invention, the blue light that it produced is through the preceding spectrogram that reaches after changing of the wavelength Conversion of light transition zone.
Fig. 4: show the white backlight source that is used in the display color LCD, the spectrogram of its white light that produces.
Fig. 5: be synoptic diagram according to the penetration color LCD of second embodiment of the invention.
Fig. 6: be synoptic diagram according to the semi-penetration color LCD of third embodiment of the invention.
Fig. 7: be synoptic diagram according to the semi-penetration color LCD of fourth embodiment of the invention.
The figure number explanation
100 LCD, 110 backlight modules
112 white light sources, 130 light polarizing film
140 liquid crystal cells, 142 transparency carriers
144 transparency carriers, 146 liquid crystal layers
148 color filter films, 150 light polarizing film
200 LCD, 210 backlight modules
212 blue-light sources, 220 smooth transition components
The 222 smooth transition zone 222a first smooth transition zones
222b second smooth transition zone 224 photic zones
226 fluorescent material 226a fluorescent materials
230 times light polarizing film of 226b fluorescent material
240 liquid crystal cells, 241 first areas
244 times transparency carrier 245 the 3rd zones
246 liquid crystal layers, 247 red filter coatings
248 green filter films, 249 blue filter coatings
Light polarizing film 270 reflection horizon on 250
272 openings, 280 colorized optical filtering zones
290 display panels, 300 LCD
400 LCD, 500 LCD
Embodiment
Please refer to Fig. 2, the penetration color LCD 200 of first embodiment of the invention includes a display panel 290 and the backlight module 210 below this display panel 290.This backlight module 210 includes a blue-light source 212, and blue led for example is in order to produce blue light.This display panel 290 comprises a liquid crystal cell 240, and it is made up of transparency carrier on one 242 and transparency carrier 244 double teams one liquid crystal layer 246 once.Between this two substrates 242,244, be provided with a colorized optical filtering zone 280, include several red filter coatings 247, several green filter films 248 and several blue filter coatings 249, be located at down respectively on first area 241, second area 243 and the 3rd zone 245 of transparency carrier 244.On the two substrates 242,244 of liquid crystal cell 240, be respectively equipped with light polarizing film 250 and reach light polarizing film 230 down.Be provided with a smooth transition components 220 below the light polarizing film 230 down, it includes several light transition zones 222 and several photic zones 224, these light transition zones 222 have the ability of light wavelength conversion, can be the film that for example has fluorescent material 226 and tool diffusion light effects, and these photic zones 224 do not have the ability of light wavelength conversion, can be made of for example transparent material, perhaps be several openings on this light transition components 220.The position of these light transition zones 222 is corresponding to these red filter coating 247 and these green filter films 248, and these photic zones 224 are corresponding to these grade in an imperial examination three zones 245.
After the blue light that the blue-light source 212 of above-mentioned backlight module 210 is produced shines these light transition zones 222, be converted into the sodium yellow of broadband (broadband), wherein cardiac wave is about between the 530nm to 600nm, by behind these red filter coatings 247 and the green filter film 248, become desired red light and green light again.And the blue light that is produced by blue-light source 212 does not carry out the conversion of any optical wavelength by behind these photic zones 224, promptly by these blue filter coatings 249, becomes desired blue light.
Please refer to Fig. 3, it shows the spectrogram that reaches before blue backlight 212 is through the wavelength Conversion of these light transition zones 222 after changing.Curve A among the figure is the frequency spectrum of blue led, and curve B is the spectrogram of blue light after wavelength Conversion that blue led sent.See that very clearly the blue light of the overwhelming majority is converted to yellow band, blue light ingredient obviously reduces.Please refer to Fig. 4, it shows with the spectrogram of white light LEDs as back light.See very clearly among the figure that the intensity of blue light is the strongest, the intensity of gold-tinted approximately only its half.Therefore, when above-mentioned white light by behind red filter coating or the green filter film, still can some blue light do not filtered out, cause the colourity of formed red light or green light impure, and brightness is not good yet.And the sodium yellow through being produced after smooth transition zone 222 conversions of the present invention, behind these red filter coatings 247 or green filter film 248, because its original blue light ingredient is not high, therefore the colourity of formed red light or green light is very high, and resulting brightness is also satisfactory.
Table 1 includes light transition zone 222 for the present invention penetration color LCD 200 uses the analog result of White LED 112 as the LCD 100 of light source with demonstration, and wherein L is brightness, and x, y are the x value and the y value of C.I.E. coordinate.As seen from table, the former NTSC ratio (NTSC Ratio) has promoted 30%, brightness has also promoted more than 50% simultaneously, the obvious penetration color LCD 200 that includes light transition zone 222, the performance of its color and brightness show that using White LED 122 is superior as the LCD 100 of light source.
Table 1
The difference of The above results is to be used in the difference of fluorescent material preparation on these light transition zones 222 and this White LED 112, but its basic reason is, the white light that White LED 112 is sent remains with most blue light ingredient, so that white light can produce the blue light of enough brightness after by blue filter coating; Then do not need blue light ingredient (blue light ingredient is fewer better, because directly provided by this blue led 112 by the blue light of these blue filter coatings 249) by the light behind these light transition zones 222.
The penetration color LCD 200 of these light transition zones 222 of above-mentioned use can not must use these blue filter coatings 249, that is (not being shown among the figure) formed by (consisting essentially of) several red filter coatings 247 and several green filter films 248 in fact in this colorized optical filtering zone 280.The light that this reason blue led 212 is produced only comprises blue composition, must not re-use blue filter coating 249 and filter, and therefore can reduce cost and reduce the loss by the blue pixel blue light strength.In addition, but fluorescent material 226 mats that these light transition zones 222 are comprised coatings or the mode that is doped in a substrate form.Moreover the fluorescent material 226 on these light transition zones 222 has yttrium aluminum garnet (yttrium aluminumgarnet; YAG) structure, the thickness of this fluorescent material 226 are between between the 10nm to 100000nm, and film 222 is by acryl resin (acrylic resin), polyethers arylamine (polyether sulfone; PES), polyethylene terephthalate (poly ethylene terephthalate; PET), polycarbonate (poly carbonate; PC) or polyarylate compound compositions such as (polyarylate).The area in these grade in an imperial examination three zones 245 account for these first areas 241, second area 243 and the 3rd regional 245 area summations 1% to 40% between, the area of the area of these first areas 241, second area 243 then account for respectively these first areas 241, second area 243 and the 3rd regional 245 area summations 10% to 50% between.
In addition, the penetration color LCD 200 of first embodiment of the invention, its respectively this light transition zone 222 be to comprise one first smooth transition zone 222a and one second smooth transition zone 222b, the position of these first smooth transition zone 222a is corresponding to these red filter coatings 247, and the position of these second smooth transition zone 222b is corresponding to these green filter films 248.Fluorescent material on these the first smooth transition zone 222a and the second smooth transition zone 222b, be to be mixed with fluorescent material 226a and fluorescent material 226b respectively, so that after blue light penetrated these first smooth transition zone 222a, its centre wavelength converted between between the 620nm to 780nm; And after blue light penetrated these second smooth transition zone 222b, its centre wavelength converted between between the 500nm to 580nm.Light beam after the above-mentioned conversion becomes desired red light and green light respectively after passing through these red filter coatings 247 and green filter film 248 separately.
Please refer to Fig. 5, the penetration color LCD 300 of second embodiment of the invention has the structure of similar display 200, identical assembly in this labeled.Different with display 200 is that these red filter coatings 247, green filter film 248 and blue filter coating 249 are to be located between this two transparency carrier 242,244, but are positioned on the transparency carrier 242.Because display 300 has the structure that is similar to display 200, therefore, further specifying of any same components will be omitted at this.
Please refer to Fig. 6, the semi-penetration color LCD 400 of third embodiment of the invention has the structure of similar display 200, but comprises the reflection horizon 270 of several openings 272 of a tool in addition, is located at down on the transparency carrier 244.The opening 272 in reflection horizon 270 can allow the light that blue led 212 produced arrive in observer's the eye, but and also reflect ambient light of reflection horizon 270 reaches that to utilize extraneous light be the purpose of system electric quantity consumption with minimizing.
Please refer to Fig. 7, the semi-penetration color LCD 500 of fourth embodiment of the invention has the structure of similar display 300, but comprises the reflection horizon 270 of several openings 272 of a tool in addition, is located at down on the transparency carrier 244.In addition, the red filter coating 247 of display 500, green filter film 248 and blue filter coating 249 are located on the transparency carrier 242, and it is different that the filter coating 247,248 and 249 of this and display 400 is located at down on the transparency carrier 244 person.
According to semi-penetration color LCD 400,500 of the present invention, 272 areas of the opening in reflection horizon 270 in these first areas 241 be account for these first area 241 areas 2% to 99% between, and 272 areas of the opening in reflection horizon 270 at these second areas 243 be account for these second area 243 areas 2% to 99% between, 272 areas of the opening in reflection horizon 270 in these grade in an imperial examination three zones 245 be account for these grade in an imperial examination three regional 245 areas 1% to 60% between.In addition, because these displays 400,500 have the structure of similar this display 200, therefore, further specifying of any same components will be omitted at this.
According to colour liquid crystal display device of the present invention, because of having the light transition zone, can make colour liquid crystal display device have better briliancy and the color saturation of penetrating, and only need use monochromatic backlight and can make colour liquid crystal display device realize high-penetration brightness and high color saturation.In addition, colour liquid crystal display device according to the present invention can not need use blue filter coating, therefore can reduce cost and reduce the loss by the blue pixel blue light strength.
Though the present invention discloses with described preferred embodiment, so it is not in order to limiting the present invention, anyly is familiar with this technology personage, without departing from the spirit and scope of the present invention, and when doing various changes and modification.Therefore protection scope of the present invention is when being as the criterion that claim of the present invention defined.
Claims (26)
1, a kind of penetration color LCD, it comprises:
Transparency carrier on one;
Transparency carrier once is located at the below of transparency carrier on this, and wherein the delimited of a transparency carrier in this two transparency carrier has several first areas, several second areas and several the 3rd zones, and these zones are between this two transparency carrier;
One liquid crystal layer is located between this two substrates;
Several red filter coatings are located on these first areas;
Several green filter films are located on these second areas;
One backlight module has a blue-light source, and this backlight module is located at the below of this time transparency carrier;
One smooth transition components, comprise several light transition zones and several photic zones, this light transition components is located between this time transparency carrier and this backlight module, and the position of these light transition zones is corresponding to these red filter coatings and these green filter films, and the position of these photic zones is corresponding to these grade in an imperial examination three zones; And
Two light polarizing film, one of them is located at transparency carrier top on this, and another is located between this light transition components and this time transparency carrier.
2, penetration color LCD according to claim 1, wherein after blue light penetrated these light transition zones, its centre wavelength converted between between the 530nm to 600nm.
3, penetration color LCD according to claim 1, wherein respectively this light transition zone has one first smooth transition zone and one second smooth transition zone, the position of this first smooth transition zone is corresponding to this redness filter coating, the position of this second smooth transition zone is corresponding to this green filter film, after blue light penetrated this first smooth transition zone, its centre wavelength converts between between the 620nm to 780nm, after blue light penetrated this second smooth transition zone, its centre wavelength converted between between the 500nm to 580nm.
4, penetration color LCD according to claim 1, wherein these light transition zones are made up of the film with fluorescent material.
5, penetration color LCD according to claim 4, wherein this fluorescent material has the structure of yttrium aluminum garnet.
6, penetration color LCD according to claim 4, wherein this fluorescent material is formed on these light transition zones by coating method.
7, penetration color LCD according to claim 4, wherein this fluorescent material is formed in these light transition zones by doping way.
8, penetration color LCD according to claim 4, wherein the thickness of this fluorescent material is between between the 10nm to 100000nm.
9, penetration color LCD according to claim 4 is wherein selected institute and is formed in the group that this film is made of acryl resin, polyethers arylamine, polyethylene terephthalate, polycarbonate and polyarylate compound etc.
10, penetration color LCD according to claim 1, wherein the area in these grade in an imperial examination three zones account for these first areas, second area and the 3rd region area summation 1% to 40% between, the area of these first areas, the area of second area then account for respectively these first areas, second area and the 3rd region area summation 10% to 50% between.
11, penetration color LCD according to claim 1, wherein these photic zones are made of transparent material.
12, penetration color LCD according to claim 1, wherein these photic zones are to be several openings on the light transition components.
13, a kind of semi-penetration color LCD, it comprises:
Transparency carrier on one;
Transparency carrier once is located at the below of transparency carrier on this, and wherein the delimited of a transparency carrier in this two transparency carrier has several first areas, several second areas and several the 3rd zones, and these zones are between this two transparency carrier;
One liquid crystal layer is located between this two substrates;
One reflection horizon, several openings of tool, this reflection horizon is located between this two transparency carrier, and is positioned on this time transparency carrier;
Several red filter coatings are located on these first areas;
Several green filter films are located on these second areas;
One backlight module has a blue-light source, and this backlight module is located at the below of this time transparency carrier;
One smooth transition components, comprise several light transition zones and several photic zones, this light transition components is located between this time transparency carrier and this backlight module, and the position of these light transition zones is corresponding to these red filter coatings and these green filter films, and the position of these photic zones is corresponding to these grade in an imperial examination three zones; And
Two light polarizing film, one of them is located at transparency carrier top on this, and another is located between this light transition components and this time transparency carrier.
14, semi-penetration color LCD according to claim 13, wherein after blue light penetrated these light transition zones, its centre wavelength converted between between the 530nm to 600nm.
15, semi-penetration color LCD according to claim 13, wherein respectively this light transition zone has one first smooth transition zone and one second smooth transition zone, the position of this first smooth transition zone is corresponding to this redness filter coating, the position of this second smooth transition zone is corresponding to this green filter film, after blue light penetrated this first smooth transition zone, its centre wavelength converts between 620 to 780nm, after blue light penetrated this second smooth transition zone, its centre wavelength converted between 500 to 580nm.
16, semi-penetration color LCD according to claim 13, wherein these light transition zones are made up of the film with fluorescent material.
17, semi-penetration color LCD according to claim 16, wherein this fluorescent material has the structure of yttrium aluminum garnet.
18, semi-penetration color LCD according to claim 16, wherein this fluorescent material is formed on these light transition zones by coating method.
19, semi-penetration color LCD according to claim 16, wherein this fluorescent material is formed in these light transition zones by doping way.
20, semi-penetration color LCD according to claim 16, wherein the thickness of this fluorescent material is between between the 10nm to 100000nm.
21, semi-penetration color LCD according to claim 16 is wherein selected institute and is formed in the group that this film is made of acryl resin, polyethers arylamine, polyethylene terephthalate, polycarbonate and polyarylate compound etc.
22, semi-penetration color LCD according to claim 13, wherein the opening position in this reflection horizon the area of these first areas be account for these first area areas 2% to 99% between, and the opening position in this reflection horizon the area of these second areas be account for these second area areas 2% to 99% between, the opening position in this reflection horizon the area in these grade in an imperial examination three zones be account for these grade in an imperial examination three region areas 1% to 60% between.
23, semi-penetration color LCD according to claim 13, wherein these photic zones are made of transparent material.
24, semi-penetration color LCD according to claim 13, wherein these photic zones are to be several openings on the light transition components.
25, a kind of colour liquid crystal display device, it comprises:
Transparency carrier on one;
Transparency carrier once is located at the below of transparency carrier on this, and wherein the delimited of a transparency carrier in this two transparency carrier has several first areas, several second areas and several the 3rd zones, and these zones are between this two transparency carrier;
One liquid crystal layer is located between this two substrates;
One colorized optical filtering zone is made up of several red filter coatings and several green filter films in fact, and these red filter coatings are located on these first areas, and these green filter films are located on these second areas;
One backlight module has a blue-light source, and this backlight module is located at the below of this time transparency carrier;
One smooth transition components, comprise several light transition zones and several photic zones, this light transition components is located between this time transparency carrier and this backlight module, and the position of these light transition zones is corresponding to these red filter coatings and these green filter films, and the position of these photic zones is corresponding to these grade in an imperial examination three zones; And
Two light polarizing film, one of them is located at transparency carrier top on this, and another is located between this light transition components and this time transparency carrier.
26, colour liquid crystal display device according to claim 25, it also comprises:
One reflection horizon, several openings of tool, this reflection horizon is located between this two transparency carrier, and is positioned on this time transparency carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100908755A CN101285957B (en) | 2007-04-09 | 2007-04-09 | Color liquid-crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100908755A CN101285957B (en) | 2007-04-09 | 2007-04-09 | Color liquid-crystal display |
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| CN101285957A true CN101285957A (en) | 2008-10-15 |
| CN101285957B CN101285957B (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100908755A Expired - Fee Related CN101285957B (en) | 2007-04-09 | 2007-04-09 | Color liquid-crystal display |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436092A (en) * | 2011-11-17 | 2012-05-02 | 友达光电股份有限公司 | Pixel array substrate with color filter array and display panel |
| CN102654684A (en) * | 2011-11-22 | 2012-09-05 | 北京京东方光电科技有限公司 | LCD (liquid crystal display) panel and manufacturing method thereof |
| CN105404054A (en) * | 2015-12-14 | 2016-03-16 | 昆山龙腾光电有限公司 | Liquid crystal display panel |
| CN106707594A (en) * | 2015-11-16 | 2017-05-24 | 株式会社日本显示器 | Display device |
| CN111538188A (en) * | 2020-06-03 | 2020-08-14 | 合肥联宝信息技术有限公司 | Liquid crystal display and method for controlling display of liquid crystal display |
| CN113219726A (en) * | 2021-04-26 | 2021-08-06 | 北海惠科光电技术有限公司 | Liquid crystal display and display device |
| CN113359346A (en) * | 2021-04-26 | 2021-09-07 | 北海惠科光电技术有限公司 | Liquid crystal display and display device |
| WO2022089024A1 (en) * | 2020-10-29 | 2022-05-05 | 深圳光峰科技股份有限公司 | Projection display system |
-
2007
- 2007-04-09 CN CN2007100908755A patent/CN101285957B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436092A (en) * | 2011-11-17 | 2012-05-02 | 友达光电股份有限公司 | Pixel array substrate with color filter array and display panel |
| CN102654684A (en) * | 2011-11-22 | 2012-09-05 | 北京京东方光电科技有限公司 | LCD (liquid crystal display) panel and manufacturing method thereof |
| CN106707594A (en) * | 2015-11-16 | 2017-05-24 | 株式会社日本显示器 | Display device |
| US10571735B2 (en) | 2015-11-16 | 2020-02-25 | Japan Display Inc. | Display device |
| CN105404054A (en) * | 2015-12-14 | 2016-03-16 | 昆山龙腾光电有限公司 | Liquid crystal display panel |
| CN111538188A (en) * | 2020-06-03 | 2020-08-14 | 合肥联宝信息技术有限公司 | Liquid crystal display and method for controlling display of liquid crystal display |
| WO2022089024A1 (en) * | 2020-10-29 | 2022-05-05 | 深圳光峰科技股份有限公司 | Projection display system |
| CN113219726A (en) * | 2021-04-26 | 2021-08-06 | 北海惠科光电技术有限公司 | Liquid crystal display and display device |
| CN113359346A (en) * | 2021-04-26 | 2021-09-07 | 北海惠科光电技术有限公司 | Liquid crystal display and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101285957B (en) | 2010-08-18 |
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