CN102436093A - Colored filter array substrate - Google Patents
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- CN102436093A CN102436093A CN2011104120634A CN201110412063A CN102436093A CN 102436093 A CN102436093 A CN 102436093A CN 2011104120634 A CN2011104120634 A CN 2011104120634A CN 201110412063 A CN201110412063 A CN 201110412063A CN 102436093 A CN102436093 A CN 102436093A
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Abstract
The invention provides a colored filter array substrate, which is applied to a semi-transmission and semi-reflection wide-viewing-angle liquid crystal display. The colored filter array substrate comprises a transparent substrate and a plurality of sub-pixels, wherein each sub-pixel comprises a reflection region, a transmission region, a colored filter layer and a transparent electrode, wherein the colored filter layer is provided with at least one groove. In the invention, the wide viewing angle technology of the semi-transmission and semi-reflection liquid crystal display is realized by using a groove of the colored filter layer, so that the structure is simplified, the manufacturing process is shortened, and the yield of a liquid crystal display panel is increased effectively.
Description
The present invention is that application number is 200910119354.7, the applying date is on March 25th, 2009, denomination of invention is divided an application for the Chinese invention patent application of " colorful filter array substrate ".
Technical field
The present invention provides a kind of colorful filter array substrate, refers to a kind of colorful filter array substrate that is used for the semi-penetration, semi-reflective wide-angle liquid crystal display especially.
Background technology
LCD is different according to the source of illumination light, can divide into penetration (Transmissive mode), reflective (Reflective mode), and three kinds of semi-penetration, semi-reflectives (Transflective mode) etc.Penetrating LCD have one be used for producing light backlight, and the light that backlight produced can let the user watch the display frame of LCD through display panels.Reflective liquid-crystal display then is provided with the reflection horizon; When reflective liquid-crystal display display frame; Surround lighting is got in the LCD by user's sightingpiston; By the reflection horizon of display panels light is reflected, and the light that is reflected can pass display panels again, last user just can watch the picture of LCD to show again.On the other hand; Semi-penetrated semi-reflected liquid crystal display then is the LCD that has the pattern of penetrating and reflective-mode simultaneously; That is to say; Each pixel of display panels all comprises one group of echo area and penetrating region, wherein penetrates the fauna use light that backlight produced as light source, and the echo area then is that environment for use light is as light source; Also can adjust to some extent so can effectively save required electric power, be widely used in the portable electric products such as mobile phone, digital camera, automobile-used display, mobile computer at present in response to employed environment.
Please with reference to Fig. 1, Fig. 1 is the colorful filter array substrate diagrammatic cross-section of known semi-penetrated semi-reflected liquid crystal display 2.As shown in Figure 1; Known semi-penetrated semi-reflected liquid crystal display 2 is to be arranged at 30 formations of liquid crystal layer therebetween by a colorful filter array substrate (color filter on array substrate, COA substrate) 10, one transparent upper substrate 6 and.Colorful filter array substrate 10 comprises a transparency carrier 12, and a plurality of pixel 200 is located at going up of transparency carrier 12 and between transparent upper substrate 6 and transparency carrier 12.Wherein, Each pixel 200 can comprise a plurality of sub-pixel 20S, 22S, 24S, is respectively equipped with the filter layer of different colours, for example red filter layer 20, green filter layer 22 and blue color filter layer 24 etc.; And each sub-pixel has a penetrating region 202,222,242 and an echo area 204,224,244 again respectively; And (Black Matrix, BM) 18 isolate each sub-pixel, prevent light leak to utilize the black matrix"s that are arranged at penetrating region 202,222,242 and 204,224,244 centres, echo area.In addition, each sub-pixel comprises a thin film transistor (TFT) (TFT) (not shown) respectively and a transparent pixels electrode 26 is located on the transparency carrier 12, and each echo area 204,224,244 then comprises an organic layer 14 and a metallic reflector 16 in addition.
As previously mentioned, the running of semi-penetrated semi-reflected liquid crystal display 2 comprises one and penetrates a pattern and a reflective-mode.When penetrating mode operating, each pixel 200, liquid crystal layer 30 and transparent upper substrate 6 that the light that the backlight module (not shown) is sent can penetrate colorful filter array substrate 10 come bright dipping.And when reflective-mode operates; The light source of external environment then can be incided on the metallic reflector 16 by each pixel 200 that transparent upper substrate 6 sees through liquid crystal layer 30; And by metallic reflector 16 reflections, and then through liquid crystal layer 30 and transparent upper substrate 6 bright dippings, display frame.
In addition, in order to increase the visible angle of LCD, also development has various wide viewing angle technology at present.For example multiple domain is cut apart vertical orientation (Multi-domain Vertically Aligned; MVA) technology; Projection (bump) or the correspondence combination of groove (slit) that it utilizes on the adjacent surface of upper and lower substrate contacts liquid crystal layer cause upper and lower substrate both and liquid crystal layer adjacent surface to have uneven profile, and then cause the Liquid Crystal Molecules Alignment direction inconsistent and be multidirectional arrangement; Shorten the reaction time of liquid crystal molecule and reach wide viewing angle, promoted the performance of display panels.Therefore if combine wide viewing angle technology and semi-penetration semi-reflective are technological, then can become not only power saving but also possess the LCD of wide viewing angle function.Please with reference to 2 figure, Fig. 2 is known synoptic diagram with MVA semi-penetrated semi-reflected liquid crystal display 4 of projection cube structure.The assembly label of Fig. 2 is all identical with Fig. 1 except that projection 28; As shown in Figure 2; Known MVA semi-penetrated semi-reflected liquid crystal display 4; Promptly be the composite design that in colorful filter array substrate 10 and transparent upper substrate 6, increases plurality of bump 28 or groove (not shown) respectively,, reach the function of wide viewing angle by the arrangement that projection 28 changes around the liquid crystal molecule around it.
Yet; Known combination wide viewing angle technology and the technological LCD of semi-penetration semi-reflective; All be in the penetrating region of colorful filter array substrate and echo area, to set up plurality of bump, promptly need increase little shadow and etching (photo-etching process, PEP) fabrication steps together thus; Not only complex structure, increase production cost, also relatively many errors of aiming at.So, how during in power saving designs such as double advantage of getting wide-angle liquid crystal display and semi-penetrated semi-reflected liquid crystal displays, effectively promote prouctiveness, be industry important problem at present.
Summary of the invention
In view of this, the object of the invention promptly provides a kind of colour filter array of semi-penetration, semi-reflective wide-angle liquid crystal display, to solve foregoing problems
According to the object of the invention, the present invention provides a kind of colorful filter array substrate, and it comprises a transparency carrier and a plurality of sub-pixel is located on this transparency carrier.Respectively this sub-pixel all has a penetrating region and an echo area, and these sub-pixels comprise one first light shield layer, a chromatic filter layer, a reflection horizon and a transparency electrode respectively.Wherein, This first light shield layer is located on this transparency carrier in this echo area; And this chromatic filter layer; Cover this first light shield layer of this echo area and this transparency carrier of this penetrating region, and this chromatic filter layer have a plurality of multiple domains and cut apart vertical orientation (MVA) structure and be divided into this echo area and this penetrating region.In addition, this reflection horizon is located between this chromatic filter layer and this first light shield layer, and this transparency electrode is located at this color filter layer surface.
According to another purpose of the present invention, the present invention provides a kind of colorful filter array substrate, and it comprises a transparency carrier; And a plurality of sub-pixels are located on this transparency carrier.Respectively this sub-pixel all has a penetrating region and an echo area, and these sub-pixels comprise a chromatic filter layer, a transparency electrode, one first projection and at least one second projection respectively.Wherein this chromatic filter layer be located on this transparency carrier, and this transparency electrode is located at this color filter surfaces.In addition, the first projection, provided on the reflective region of the transparent electrode, and the first projection has at least Shu groove, and the second bumps arranged on the penetration region of the transparent electrode on.
The present invention system provides the structure of a simplification semi-penetration, semi-reflective wide-angle liquid crystal display; So can shorten the manufacturing process required time; Promote the production capacity that the semi-penetration, semi-reflective wide-angle liquid crystal display is made; And can combine technology such as MVA to improve the angular field of view of traditional semi-penetrated semi-reflected liquid crystal display, effectively promote the multiple performance of display panels.
Description of drawings
Fig. 1 is the colorful filter array substrate diagrammatic cross-section of known semi-penetrated semi-reflected liquid crystal display;
Fig. 2 is the colorful filter array substrate diagrammatic cross-section of known semi-penetration, semi-reflective wide-angle liquid crystal display;
Fig. 3 is the diagrammatic cross-section of colorful filter array substrate first embodiment of the present invention;
Fig. 4 is the sub-pixel enlarged diagram among the 3rd figure;
Fig. 5 is the sectional view of colorful filter array substrate second embodiment of the present invention;
Fig. 6 be the top view of second embodiment of the invention sub-pixel with along the sectional view of A-A ' transversal.
[primary clustering symbol description]
2 semi-penetrated semi-reflected liquid crystal displays
4 MVA Transflective formula LCDs
10 colour filter arrays, 12 infrabasal plates
14 organic layers, 16 reflective metals
18 black matrix"s, 28 projections
26,66,96 transparency electrodes
30,70,100 liquid crystal layers
200,600,900 pixels
42,72 semi-penetration, semi-reflective wide-angle liquid crystal displays
50,80 colour filter arrays
6,52,82 upper substrates
54,84 transparency carriers
56,86 reflection horizon
58 first light shield layers, 59 second light shield layers
88 light shield layers
20S, 22S, 24S, 60S, 62S, 64S, 90S, 92S, 94S sub-pixel
20,60,90 red filter layer
22,62,92 green filter layers
24,64,94 blue color filter layer
202,222,242,602,622,642,902,922,942 penetrating regions
204,224,244,604,624,644,904,924,944 echo areas
603,605,623,625,643,645 grooves
606 openings
98 first projections, 108 second projections
982 grooves, 984 circle shape grooves
D1, D2 gap
Embodiment
Please refer to Fig. 3, Fig. 3 is the synoptic diagram according to first embodiment of colorful filter array substrate 50 of the present invention.Shown in Figure 3, the colorful filter array substrate 50 of present embodiment is applied in the semi-penetration, semi-reflective wide-angle liquid crystal display 42, and constitutes these semi-penetration, semi-reflective wide-angle liquid crystal displays 42 jointly with another a transparent upper substrate 52 and a liquid crystal layer 70.Colorful filter array substrate 50 comprises a transparency carrier 54, and a plurality of pixel 600 is located at going up of transparency carrier 54 and between transparent upper substrate 52 and transparency carrier 54.For the purpose of simplifying the description; Be illustration only with a pixel 600; Wherein, each pixel 600 can comprise a plurality of sub-pixel 60S, 62S, 64S, is respectively equipped with the chromatic filter layer of different colours; For example chromatic filter layer such as cited red filter layer 60, green filter layer 62 and blue color filter layer 64 or other white, yellow, cyan, fuchsin in the present embodiment, and each sub-pixel 60S, 62S, 64S again respectively tool one penetrating region 602,622,642 and an echo area 604,624,644 are arranged.In addition, each sub-pixel 60S, 62S, 64S comprise a thin film transistor (TFT) (TFT) (not shown) respectively and a transparent pixels electrode 66 is located on the transparency carrier 54, and each echo area 604,624,644 then comprises one first light shield layer 58 and a reflection horizon 56 in addition.And each chromatic filter layer (red filter layer 60, green filter layer 62, blue color filter layer 64) has at least one groove 603,623,643 and 605,625,645 respectively corresponding to the part of penetrating region 602,622,642 and echo area 604,624,644.In addition; Colorful filter array substrate 50 comprises a plurality of data lines (Dataline) that are connected in above-mentioned each thin film transistor (TFT) (TFT) and assemblies such as sweep trace (Scanline) and alignment film in addition; This is the known art ripe common knowledge of knowing clearly, and does not add to give unnecessary details at this.
In order to specify the structure of colorful filter array substrate 50 of the present invention, existing sub-pixel 60S with Fig. 3 comes to introduce in detail, and Fig. 4 is the enlarged diagram of the sub-pixel 60S of Fig. 3.See also Fig. 4; Transparency carrier 54 is located at the top of backlight module (not shown); First light shield layer 58 is located at the top of transparency carrier 54, covers entire emission district 604, and it can be made up of black matrix" materials such as (BM); And the top of first light shield layer 58 is located in reflection horizon 56, and it can be made up of reflectorized materials such as metals.Red filter layer 60 is arranged at the reflection horizon 56 of echo area 604 and transparency carrier 54 tops of penetrating region 602; And have at least one wide viewing angle (MVA) structure in the red filter layer 60, for example correspond to the groove 603,605 that penetrating region 602 and echo area 604 are disposed in order to influence Liquid Crystal Molecules Alignment.Be formed with layer of transparent electrode 66 on the transparency carrier 54; It can be by tin indium oxide (Indium Tin Oxide; ITO), indium zinc oxide (Indium Zinc Oxide; IZO) etc. transparent metal oxide constitutes, and transparency electrode 66 is covered on red filter layer 60 surfaces of penetrating region 602 and echo area 604 along with the profile of groove 603,605, is used as pixel electrode.Wherein, Because present embodiment is provided with first light shield layer 58 in echo area 604; Therefore by due to the thickness of first light shield layer 58; The liquid crystal layer 70 that transparency electrode 66 on the echo area 604 and upper substrate are 52 has a clearance D 1, and the liquid crystal layer 70 that transparency electrode 66 on the penetrating region 602 and upper substrate are 52 then has a clearance D 2, and clearance D 1 is less than clearance D 2; And then can guarantee the rough optical path that is similar in the penetrating region 602 of optical path in the echo area 604, with the difference of effective reduction penetrating region 602 and echo area 604 such as tone etc.
In addition; It should be noted that; Owing to have at least one in the red filter layer 60 of the present invention in order to influence the wide viewing angle structure of Liquid Crystal Molecules Alignment; For example correspond to the groove 603,605 that penetrating region 602 and echo area 604 are disposed, the transparency electrodes 66 that feasible profile along with groove 603,605 is covered in color filter layer 60 surfaces also are a non-planar surface.Therefore; The present invention optionally is provided with one second light shield layer 59 in groove 603 belows of penetrating region 602; And in the reflection horizon 56 correspond to the red filter layer 60 of echo area 604 groove 605 belows dispose the pattern of an opening 606; This opening is corresponding to this MVA structure of this echo area, in order to the phenomenons such as light leak that in disorder electric field caused of avoiding transparency electrode 66 to cause because of these groove 603,605 structures.Wherein, second light shield layer 59 can be that same PEP processing procedure forms with first light shield layer 58 of echo area 604, that is it also can be made up of black matrix" materials such as (BM).
Please refer to Fig. 5, Fig. 5 is the diagrammatic cross-section according to colorful filter array substrate 80 second embodiment of semi-penetration, semi-reflective wide-angle liquid crystal display 72 of the present invention.As shown in Figure 5; The colorful filter array substrate 80 of present embodiment is applied in the semi-penetration, semi-reflective wide-angle liquid crystal display 72, and constitutes these semi-penetration, semi-reflective wide-angle liquid crystal displays 72 jointly with another a transparent upper substrate 82 and a liquid crystal layer 100.Colorful filter array substrate 80 comprises a transparency carrier 84 and a plurality of pixel 900 is located on the transparency carrier 84, and between upper substrate 82 and transparency carrier 84.Likewise; For the purpose of simplifying the description, the 5th figure is an illustration with a pixel 900, wherein; Each pixel 900 can comprise a plurality of sub-pixel 90S, 92S, 94S; And each sub-pixel 90S, 92S, 94S system have penetrating region 902,922,942, echo area 904,924,944 respectively, and are respectively equipped with the chromatic filter layer of different colours, for example red filter layer 90, green filter layer 92 and blue color filter layer 94 or comprise chromatic filter layers such as other white, yellow, cyan, fuchsin.Moreover; Each sub-pixel 90S, 92S, 94S include a transparency electrode 96 again respectively and are located on the chromatic filter layer 90,92,94; One first projection 98 is arranged in the echo area 904,924,944; At least one second projection 108 is located in the penetrating region 902,922,942, and at least one reflection horizon 86 is arranged in each echo area 904,924,944.In addition, colorful filter array substrate 80 comprises thin film transistor (TFT) array in addition, a plurality of are connected in the data line and the assemblies such as sweep trace and alignment film of each thin film transistor (TFT), does not also give unnecessary details at this.
Then, in order to specify the structure of colorful filter array substrate 80 of the present invention, introduce in detail so that the sub-pixel 90S of Fig. 5 is next.Fig. 6 is a sub-pixel 90S top view among second embodiment of colorful filter array substrate 80 of the present invention and sectional view along A-A ' transversal.See also Fig. 6, transparency carrier 84 is located at the top of backlight module (not shown), and the top of transparency carrier 84 is located in reflection horizon 86, and it can be made up of reflectorized materials such as metals.Red filter layer 90 is to be arranged at the reflection horizon 86 of echo area 904 and transparency carrier 84 tops of penetrating region 902; And have more at least one wide viewing angle (MVA) structure on the red filter layer 90, for example correspond to the groove 982 and second projection 108 that corresponds to penetrating region 902 of the first set projection 98 of echo area 904 in order to influence a Liquid Crystal Molecules Alignment.The transparent electrode 96 is formed on the red filter layer 90 and the bump of between 98,108 and having a flat surface Shu, used as a pixel electrode, which may be indium tin oxide (ITO), indium zinc oxide (IZO) and other transparent metal oxide of the composition.In addition; Because present embodiment is provided with first projection 98 in echo area 904; Therefore can be by due to the thickness of first projection 98, make the clearance D 1 of echo area 904 less than the clearance D 2 of penetrating region 902, with the difference of effective reduction penetrating region 902 and echo area 904 such as tone etc.
General with first embodiment; The wide viewing angle function of semi-penetration, semi-reflective wide-angle liquid crystal display 72; Be to cause Liquid Crystal Molecules Alignment direction inconsistency to reach by transparency carrier 84 and the transparent uneven profile of upper substrate 82 both and liquid crystal layer 100 adjacent surfaces; And present embodiment promptly utilizes the groove 982 of first projection 98 and the uneven profile that second projection 108 is constituted, and makes the Liquid Crystal Molecules Alignment direction present polytropism.In addition, present embodiment optionally be provided with respectively a light shield layer 88 between each sub-pixel and each sub-pixel internal reflection district 904,924,944 and penetrating region 902,922, between 942.
It should be noted that; First projection, 98 surfaces of present embodiment can be provided with at least one anaclasis assembly in addition; For example a plurality of circle shape grooves 984; Be used for constituting like the husband and pinch the grating (Fresnel Lens) as your lens,, save the spent electric power of backlight open with the catoptrical intensity of enhanced environment light.And; The groove 603,623,643 and 605,625,645 of each chromatic filter layer of first projection 98, second projection 108 and first embodiment with groove 982 and circle shape groove 984 of the second embodiment of the present invention all can use the exposure technique of gray-level mask (Gray tone Mask) or shadow tone light shield (Half tone Mask) etc. or help with etching step, produces the difform assembly of these tools in same processing procedure.
Total the above; The present invention provides a kind of colorful filter array substrate that is applied to the semi-penetration, semi-reflective wide-angle liquid crystal display; Not only have a simplified structure, effectively save complicated manufacturing course and shorten the manufacturing process required time, significantly promote the production capacity of semi-penetration, semi-reflective wide-angle liquid crystal display; And can combine the MVA technology to improve the angular field of view of traditional semi-penetrated semi-reflected liquid crystal display, effectively promote the multiple performance of display panels.
The above is merely preferred embodiment of the present invention, and all equalizations of being done according to claim scope of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (4)
1. colorful filter array substrate is characterized in that it comprises:
One transparency carrier; And
A plurality of sub-pixels are located on this transparency carrier, and respectively this sub-pixel all has a penetrating region and an echo area, and these sub-pixels comprise respectively:
One chromatic filter layer is located on this transparency carrier;
One transparency electrode is located at this color filter surfaces;
One first projection is located on this transparency electrode in this echo area, and this first projection has at least one groove;
At least one second projection is located on this transparency electrode in this penetrating region; And
Said transparency electrode is located between said chromatic filter layer and said first projection, and between said chromatic filter layer and said second projection, said transparency electrode has a flat surfaces, as the usefulness of pixel electrode.
2. colorful filter array substrate as claimed in claim 1 is characterized in that, is provided with a reflection horizon in this echo area in addition, and this reflection horizon is located between this transparency carrier and this chromatic filter layer in this echo area.
3. colorful filter array substrate as claimed in claim 1 is characterized in that, a light shield layer respectively is set respectively between this sub-pixel, is provided with a light shield layer in addition between this echo area and this penetrating region, and this light shield layer comprises black matrix".
4. colorful filter array substrate as claimed in claim 1 is characterized in that, this first lug surface has at least one anaclasis assembly in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104120634A CN102436093A (en) | 2009-03-25 | 2009-03-25 | Colored filter array substrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104120634A CN102436093A (en) | 2009-03-25 | 2009-03-25 | Colored filter array substrate |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101193547A Division CN101846843B (en) | 2009-03-25 | 2009-03-25 | Colorful filter array substrate |
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| CN102436093A true CN102436093A (en) | 2012-05-02 |
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| CN2011104120634A Pending CN102436093A (en) | 2009-03-25 | 2009-03-25 | Colored filter array substrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375312A (en) * | 2014-11-11 | 2015-02-25 | 深圳市华星光电技术有限公司 | COA array substrate and liquid crystal display panel |
| US9577104B2 (en) | 2014-11-11 | 2017-02-21 | Shenzhen China Star Optoelectronics Technology Co., Ltd | COA substrate and liquid crystal display panel |
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| US20030218698A1 (en) * | 2002-04-10 | 2003-11-27 | Toshihiro Otake | Mask, substrate with light reflective film, method for manufacturing light reflective film, liquid crystal display device, and electronic apparatus |
| CN1517748A (en) * | 2003-01-24 | 2004-08-04 | ������������ʽ���� | Liquid crystal display device and electronic equipment |
| US20070109473A1 (en) * | 2005-11-14 | 2007-05-17 | Sanyo Epson Imaging Devices Corporation | Liquid crystal device and electronic apparatus |
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| CN1209565A (en) * | 1997-07-28 | 1999-03-03 | 夏普株式会社 | Liquid-crystal display device |
| US20030218698A1 (en) * | 2002-04-10 | 2003-11-27 | Toshihiro Otake | Mask, substrate with light reflective film, method for manufacturing light reflective film, liquid crystal display device, and electronic apparatus |
| CN1517748A (en) * | 2003-01-24 | 2004-08-04 | ������������ʽ���� | Liquid crystal display device and electronic equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375312A (en) * | 2014-11-11 | 2015-02-25 | 深圳市华星光电技术有限公司 | COA array substrate and liquid crystal display panel |
| US9577104B2 (en) | 2014-11-11 | 2017-02-21 | Shenzhen China Star Optoelectronics Technology Co., Ltd | COA substrate and liquid crystal display panel |
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Application publication date: 20120502 |