CN1532567A - Color optical filter and liquid crystal display device - Google Patents
Color optical filter and liquid crystal display device Download PDFInfo
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- CN1532567A CN1532567A CNA031140335A CN03114033A CN1532567A CN 1532567 A CN1532567 A CN 1532567A CN A031140335 A CNA031140335 A CN A031140335A CN 03114033 A CN03114033 A CN 03114033A CN 1532567 A CN1532567 A CN 1532567A
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Abstract
The present invention relates to color optical filter and LCD device therewith. The color optical filter includes one first substrate, and one black matrix and coloring layer. The black matrix layer includes one anti-reflecting layer and one mask layer set on the first substrate layer successively; the coloring layer and the black matrix layer are set on the first substrate alternately; and the coloring layer covers the surface of the mask layer.
Description
[technical field]
The present invention relates to the liquid crystal indicator of a kind of colored filter and this colored filter of employing.
[background technology]
LCD is a kind of passive type display device, for reaching the colored effect that shows, need provide a colored filter for it, its effect is to provide colored for LCD, cooperate other assembly such as TFT (Thin Film Transistor, thin film transistor (TFT)) array and liquid crystal and show different chromatic images.
Seeing also Fig. 1, is prior art colorful filter structure synoptic diagram.This colored filter 20 comprises a glass substrate 24, a black matrix" 23, a dyed layer 22 and an ITO (Indium Tin Oxide, tin indium oxide) layer 21.This dyed layer 22 has red (R), blue (B), green (G) three kinds of coloring units, and recurring rule is arranged these three kinds of coloring units to pass through Red light respectively on this glass substrate 24, stops that the light of other wavelength passes through.This black matrix" 23 is arranged between this three coloring units, its effect is that blocking is by the light between three coloring units, prevent leakage of light and stop coloured material to mix, ITO layer 21 then and a tft array (figure do not show) cooperate, the light of controlling these dyed layer 22 each coloring units by number to show different colors.
This black matrix" 23 generally is made up of chromium and compound thereof or black resin, and its optical characteristics depends on its OD (Optical Density, optical density (OD)) and reflectivity.OD represents the light shielding ability of black matrix", and reflectivity then refers to the light reflectance on black matrix" two sides.When black matrix" is applied to LCD, black matrix" surface and another surface relative with it of contiguous LCDs one side can be subjected to the irradiation of ambient light and LCD backlight respectively, can cause reflected light too much to produce the light interference problem if reflectivity is too high.
The 0D value of black matrix" is high more and reflectivity is low more, then can make this liquid crystal display displays contrast height when it is applied to LCD, clear picture, on the contrary then display effect is poor.The black matrix" reflectivity of being made up of the black resin material is low, but its OD value is not high, and the black matrix" OD value of being made up of chromium and compound thereof is high, but its reflectivity is too high.
A kind of colored filter that adopts the black matrix" of being made up of chromium and compound thereof is exposed in the United States Patent (USP) announced September 4 calendar year 2001 the 6th, 285, No. 424.See also Fig. 2, this colored filter 1 comprises a transparent glass substrate 2, a black matrix" 9, a protective seam 6 and a transparent electrode layer 7, and in addition, this colored filter 1 surface also is provided with a polaroid 8.This black matrix" 9 comprises that one first anti-reflective film 3, one second anti-reflective film 4 and a light shield layer 5 are set in turn on this transparent glass substrate 2.
This first anti-reflective film 3 comprises different metallic compounds with this second anti-reflective film 4.This light shield layer 5 is made up of chromium, molybdenum, tungsten, nickel or germanium, it is different from the metal that this first anti-reflective film 3 and this second anti-reflective film 4 are adopted, the thickness of this first anti-reflective film 3 and second anti-reflective film 4 is preferably 20～60nm, and the thickness of this light shield layer 5 is preferably 50～150nm.
This patented technology is to utilize first anti-reflective film 3, second anti-reflective film 4 and light shield layer 5 each surperficial reflected light to interfere the principle that disappears mutually to reduce reflectivity, can effectively reduce the light reflectance that enters, passes through transparent glass substrate 2 from LCDs one side, but, because the light shield layer 5 of this colored filter 1 is made up of metals such as chromium, it is too high to light reflectance, when this colored filter 1 is applied to LCD, can reflection too much backlight of light shield layer 5 and produce interference phenomenon makes the optical property of this LCD be affected.
[summary of the invention]
In order to overcome the too high defective of prior art colored filter inner black matrix one lateral reflection rate, the invention provides a kind of colored filter, this colored filter inner black matrix one lateral reflection rate is lower.
In order to overcome the prior art liquid crystal indicator, the invention provides a kind of liquid crystal indicator low to reflection backlight to the too high defective of reflectivity backlight.
The technical scheme that technical solution problem of the present invention is adopted is: a colored filter is provided, it comprises one first basic unit, a black matrix" and a dyed layer, this black matrix" comprises that an anti-reflecting layer and a light shield layer are arranged in this first basic unit in regular turn, this dyed layer and this black matrix" alternately are provided with in this first basic unit, and this dyed layer covers this light shield layer surface.
The present invention provides a kind of liquid crystal indicator simultaneously, it comprises one first basic unit, a black matrix", a dyed layer, a liquid crystal layer and one second basic unit, this black matrix" comprises an anti-reflecting layer, a light shield layer and at least one dyed layer, wherein, this anti-reflecting layer and this light shield layer are set in turn in this first basic unit, this dyed layer and this black matrix" alternately are provided with in this first basic unit, and this dyed layer covers this light shield layer surface, this first basic unit and this second basic unit are oppositely arranged, and this liquid crystal layer of clamping therebetween.
Compare with prior art, the present invention has the following advantages: because colored filter dyed layer of the present invention covers this light shield layer surface, so lower light reflectance of this colored filter black matrix" one side tool, and the dyed layer that is provided with on its light shield layer can increase the OD value of this colored filter black matrix", thereby can make this colored filter have preferable optical property; Because the black matrix" dyed layer in the liquid crystal indicator of the present invention covers the light shield layer surface, can effectively reduce reflection backlight, show that contrast is higher and make the preferable optical property of this liquid crystal indicator tool, in addition, the dyed layer on this black matrix" light shield layer surface is residual forming when utilizing the dyed layer of making colored filter, its thickness can be controlled easily, thereby reduces the manufacturing cost of colored filter and liquid crystal indicator.
[description of drawings]
Fig. 1 is a prior art colorful filter structure synoptic diagram.
Fig. 2 is another prior art colorful filter structure synoptic diagram.
Fig. 3 is the colored filter first embodiment structural representation of the present invention.
Fig. 4 is another embodiment structural representation of colored filter of the present invention.
Fig. 5 is a liquid crystal indicator structural representation of the present invention.
[embodiment]
Seeing also Fig. 3, is the synoptic diagram of colored filter first embodiment of the present invention.This colored filter 30 comprises one first basic unit 34, a black matrix" 33 and a dyed layer 32, this first basic unit 34 is clear glasses, this black matrix" 33 comprises an anti-reflecting layer 332 and a light shield layer 333, wherein, this anti-reflecting layer 332 comprises first rete 3321 and second rete 3322, this second rete 3322 and first rete 3321 are set in turn in this first basic unit 34, and the refractive index of this second rete 3322 is less than the refractive index of this first rete 3321.This second rete 3322 is mainly by chromium nitride (CrO
X, X is the ratio of O to Cr) and material makes, and its thickness is 20～60nm; This first rete 3321 is mainly by chromium nitride (CrN
Y, Y is the ratio of N to Cr) and material makes, and its thickness is 20～100nm.This light shield layer 333 is mainly made by chromium (Cr) material, and this first rete 3321 of its refractive index ratio is low.That this dyed layer 32 comprises is red, blue and green three kinds of coloring units, and its effect is that light is filtered, only by with the homochromy light of this dyed layer 32.This dyed layer 32 and this black matrix" 33 alternately are provided with in this first basic unit 34, and this dyed layer 32 covers these light shield layer 333 surfaces and forms continuous layer body.
This black matrix" 33 is clathrate in this first basic unit 34 regularly arranged, this anti-reflecting layer 332 and this light shield layer 333 are formed in this first basic unit 34 through processing procedures such as little shadow, video pictures, each layer thickness can freely be controlled therebetween, to obtain lower reflectivity and higher OD value.This dyed layer 32 adopts method such as pigment dispersing methods to be formed in this first basic unit 34, and the coloring units of this dyed layer 32 (R, B, G) respectively repeated arrangement in these black matrix" 33 clathrate intervals.(G) part 321 covers light shield layer 333 surfaces and forms continuous distribution this coloring units in regular turn for R, B.Certainly, can cover light shield layer 333 surfaces on every side fully such as coloring units (G), to replace other coloring units by the coloring units at these black matrix" 33 clathrate intervals with light shield layer 333 surface coverage.(G) part 321 is residual forming when utilizing the dyed layer 32 of making colored filter 30 to this coloring units for R, B; its thickness can be regulated to dyed layer 32 exposures the time; make that its reflectivity is minimum, and flush, therefore do not need on this dyed layer 32, to add protective seam with these dyed layer 32 other parts.In addition, because this dyed layer 32 covers this light shield layer 333 fully, and can have coloring units to cover this light shield layer 333 more than one deck different colours, so it can increase the OD value of this black matrix" 33, and can effectively reduce the reflectivity of these black matrix" 33 top dyed layers 321 1 sides.
Seeing also Fig. 4, is the synoptic diagram of another embodiment of colored filter of the present invention.This colored filter 40 comprises one first basic unit 44, a black matrix" 43 and a dyed layer 42, and this black matrix" 43 comprises an anti-reflecting layer 432 and a light shield layer 433.Wherein, this anti-reflecting layer 432 comprises first rete 4321 and second rete 4322, and this second rete 4322 and first rete 4321 are set in turn in this first basic unit 44, and the refractive index of this second rete 4322 is less than the refractive index of this first rete 4321.This colored filter 40 and colored filter of the present invention first embodiment 30 are basic identical, difference is the coloring units of contiguous these black matrix" 43 both sides, all have a part 421 and 422 these place's light shield layers 433 of covering as coloring units (R) and coloring units (G), this coloring units (R) part 421 and coloring units (G) part 422 are overlapping settings up and down, and and these dyed layer 42 other parts flush, certainly, but its also butt joint arrangement about level, and because coloring units (R, G, B) be that recurring rule is arranged, so these coloring units (R, B, but G) phase double replacement, this design can further increase the OD value of this black matrix" 43 when effectively reducing these black matrix" 43 top dyed layers 421 1 lateral reflection rates.
Seeing also Fig. 5, is liquid crystal indicator synoptic diagram of the present invention.This liquid crystal indicator comprises one first basic unit 34, a black matrix" 33, a dyed layer 32, an ITO layer 31, a liquid crystal layer 35, a thin film transistor (TFT) array 36 and one second basic unit 37.This black matrix" 33 comprises an anti-reflecting layer 332 and a light shield layer 333.This anti-reflecting layer 332 comprises second rete 3322 and first rete 3321, and this first rete 3321 and second rete 3322 are set in turn in this first basic unit 34.This anti-reflecting layer 332 and this light shield layer 333 are set in turn in this first basic unit last 34.This dyed layer 32 and this black matrix" 33 alternately are provided with in this first basic unit 34, and this dyed layer 32 covers these light shield layer 333 surfaces.This ITO layer 31 is arranged at this dyed layer 32 surfaces.This first basic unit 34 and this second basic unit 37 are oppositely arranged, and clamping liquid crystal layer 35 therebetween.This thin film transistor (TFT) array 36 is arranged at contiguous liquid crystal layer 35 1 sides of this second basic unit 37.
This ITO layer 31 and this thin film transistor (TFT) array 36 cooperate, and whether rotate with the liquid crystal molecule of this liquid crystal layer 35 of electric field controls, thereby whether control are passed through from the light of back light system (scheming not show).Light by liquid crystal layer 35 incides on dyed layer 32 and the black matrix" 33, after this dyed layer 32 filters light it is passed through, and this black matrix" 33 is used to block the light of 32 of dyed layers, prevents that light from leaking.And this dyed layer 32 covers these light shield layer 333 surfaces and forms continuous layer body, so it is lower to reflectivity backlight, optical property is higher.
Claims (9)
1. colored filter, it comprises one first basic unit, a black matrix" and a dyed layer, this black matrix" comprises that an anti-reflecting layer and a light shield layer are arranged in this first basic unit in regular turn, this dyed layer and this black matrix" alternately are provided with in this first basic unit, and it is characterized in that: this dyed layer covers this light shield layer surface.
2. colored filter as claimed in claim 1 is characterized in that: this anti-reflecting layer comprises the double-layer films that refractive index is different, and lower film and this first basic unit of refractive index fits.
3. colored filter as claimed in claim 1 is characterized in that: it is regularly arranged in this first basic unit that this black matrix" is clathrate.
4. colored filter as claimed in claim 3 is characterized in that: this dyed layer comprises at least one coloring units (R), coloring units (B) or coloring units (G).
5. colored filter as claimed in claim 4 is characterized in that: this coloring units (R), coloring units (B) or coloring units (G) repeat to be arranged at this black matrix" clathrate interval.
6. colored filter as claimed in claim 5 is characterized in that: at least one coloring units (R), coloring units (B) or coloring units (G) cover this light shield layer surface.
7. colored filter as claimed in claim 5 is characterized in that: the coloring units of these black matrix" both sides (R), coloring units (B) or coloring units (G) cover this light shield layer surface, place jointly.
8. colored filter as claimed in claim 7 is characterized in that: coloring units (R), coloring units (B) or the coloring units (G) that covers this light shield layer surface is that butt joint is arranged about overlapping setting up and down or level.
9. liquid crystal indicator, it comprises one first basic unit, a black matrix", a dyed layer, a liquid crystal layer and one second basic unit, this black matrix" comprises an anti-reflecting layer, a light shield layer and at least one dyed layer, wherein, this anti-reflecting layer and this light shield layer are set in turn in this first basic unit, this dyed layer and this black matrix" alternately are provided with in this first basic unit, this first basic unit and this second basic unit are oppositely arranged, and this liquid crystal layer of clamping therebetween, it is characterized in that: this dyed layer covers this light shield layer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03114033 CN1292269C (en) | 2003-03-22 | 2003-03-22 | Color optical filter and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03114033 CN1292269C (en) | 2003-03-22 | 2003-03-22 | Color optical filter and liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1532567A true CN1532567A (en) | 2004-09-29 |
| CN1292269C CN1292269C (en) | 2006-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03114033 Expired - Fee Related CN1292269C (en) | 2003-03-22 | 2003-03-22 | Color optical filter and liquid crystal display device |
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| Country | Link |
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| CN (1) | CN1292269C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680980B (en) * | 2007-03-30 | 2011-10-26 | Lg电子株式会社 | Display filter, display device and method for forming display filter |
| CN103576375A (en) * | 2012-08-06 | 2014-02-12 | 元太科技工业股份有限公司 | Display device |
| CN104698521A (en) * | 2015-03-03 | 2015-06-10 | 昆山龙腾光电有限公司 | Color filter sheet, manufacturing method for color filter sheet and liquid crystal display device |
| CN108153035A (en) * | 2016-12-02 | 2018-06-12 | 三星显示有限公司 | The method that substrate, the display equipment including substrate and manufacture show equipment |
| CN111487808A (en) * | 2020-05-14 | 2020-08-04 | Tcl华星光电技术有限公司 | Display panel |
-
2003
- 2003-03-22 CN CN 03114033 patent/CN1292269C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680980B (en) * | 2007-03-30 | 2011-10-26 | Lg电子株式会社 | Display filter, display device and method for forming display filter |
| CN103576375A (en) * | 2012-08-06 | 2014-02-12 | 元太科技工业股份有限公司 | Display device |
| CN104698521A (en) * | 2015-03-03 | 2015-06-10 | 昆山龙腾光电有限公司 | Color filter sheet, manufacturing method for color filter sheet and liquid crystal display device |
| CN104698521B (en) * | 2015-03-03 | 2017-05-10 | 昆山龙腾光电有限公司 | Color filter sheet, manufacturing method for color filter sheet and liquid crystal display device |
| CN108153035A (en) * | 2016-12-02 | 2018-06-12 | 三星显示有限公司 | The method that substrate, the display equipment including substrate and manufacture show equipment |
| CN108153035B (en) * | 2016-12-02 | 2022-06-03 | 三星显示有限公司 | Substrate, display apparatus including the same, and method of manufacturing the display apparatus |
| CN111487808A (en) * | 2020-05-14 | 2020-08-04 | Tcl华星光电技术有限公司 | Display panel |
| CN111487808B (en) * | 2020-05-14 | 2021-07-06 | Tcl华星光电技术有限公司 | Display panel |
| WO2021227216A1 (en) * | 2020-05-14 | 2021-11-18 | Tcl华星光电技术有限公司 | Display panel and display device |
| US11815760B2 (en) | 2020-05-14 | 2023-11-14 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1292269C (en) | 2006-12-27 |
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