CN101634766B - Passive drive liquid crystal display device - Google Patents
Passive drive liquid crystal display device Download PDFInfo
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- CN101634766B CN101634766B CN2009101664865A CN200910166486A CN101634766B CN 101634766 B CN101634766 B CN 101634766B CN 2009101664865 A CN2009101664865 A CN 2009101664865A CN 200910166486 A CN200910166486 A CN 200910166486A CN 101634766 B CN101634766 B CN 101634766B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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Abstract
The invention provides a passive drive liquid crystal display device comprising a first base plate and a second base plate which are arranged oppositely, a liquid crystal layer located between the two base plates, a color filter coating located on the second base plate, a second transparent conducting layer located on the color filter coating and a first transparent conducting layer located on the first base plate, wherein both the first transparent conducting layer and the second transparent conducting layer are provided with at least one class of pattern electrodes opposite to each other. The color filter coating comprises a red filter, a green filter and a blue filter which are lined repeatedly and periodically, and the pattern electrodes of the first transparent conducting layer or the second transparent conducting layer comprise sub-electrodes lined periodically, wherein the sub-electrodes correspond to at least one of the red filter, the green filter and the blue filter. Under the action of driving voltage applied to the pattern electrodes, the liquid crystal display device displays a plurality of color areas which correspond to at least one class of pattern electrodes and have a certain color. By utilizing the color filter coating to display fixed areas in a colorful mode, the invention can avoid color lump interference and form uniform ground color.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly a kind of colored passive drive liquid crystal display device that shows in zone of realizing.
Background technology
LCD (LCD) is as a kind of flat-panel monitor, have clear picture accurately, plurality of advantages such as thin thickness, in light weight, radiationless, low energy consumption and operating voltage be low, be applied in the every field widely at present.Usually, LCD has two substrates that contain electrode, and be arranged on liquid crystal layer between the two substrates, control the deflection that the electric field intensity that is applied to this liquid crystal layer is controlled liquid crystal molecule by the electrode on the two substrates, and then the transmissivity of adjustment incident light, to realize to the bright and dark control of display pixel.
LCD can be divided into two kinds of passive drive formula and active drive-types according to the control mode difference.With respect to active driving LCD, passive drive LCD does not include source controller spare (for example thin film transistor (TFT)), and is therefore simple in structure, manufacturing process is simple, cost is lower.No matter adopt which kind of control mode, traditional LCD all is to realize colored the demonstration by the color filter film in the display panel, concrete, display panel is made of the dot matrix of a plurality of pixel cells, each pixel cell is divided into three sub-pixels again, described three sub-pixels correspond respectively to the red of color filter film, green, blue (R, G, B) three optical filters, by special colored display driver IC, control the transmittance of three sub-pixels of corresponding RGB optical filter on each pixel cell, can make each pixel cell show different colors, thereby the colour of realizing whole display panel show.
The Show Color of each pixel cell of above-mentioned LCD is not fixed, can continuously change according to the variation of driving voltage, and must use special colored display driver IC to control the driving voltage of each pixel cell, but, usually special colored display driver IC cost is higher and thermal adaptability is relatively poor, is not suitable for the requirement of some application scenario.
For example in vehicle-mounted displays such as panel board, rearview mirror, as shown in Figure 1, only need show that fixing color gets final product, therefore there is no need to adopt said structure complexity, the higher colour liquid crystal display device of cost in fixed area.
In fact, having now to realize in the LCD of above-mentioned colored display mode, normally adopt the specific color lump figure of ink printing to replace color filter film, and the dot matrix of a plurality of pixel cells is not set in LCD at the back side of the display screen of passive drive LCD.The color lump that described color lump figure has constant color in fixing zone, there is not the zone of Presentation Function not have color lump, for example, the segment encode of 0～6000r/min scope does not print color lump in the tachometer gage, and be printed with red color lump greater than the segment encode of 6000r/min, and when rotating speed during at 5000r/min, liquid crystal deflecting element in the zone of corresponding 0～5000r/min segment encode and printing opacity, thereby display white, and the above details in a play not acted out on stage, but told through dialogues district of segment encode zone of 5000r/min for not powering up.
Yet problem is, above-mentioned LCD is under the irradiation in white backlight source, the details in a play not acted out on stage, but told through dialogues district that does not power up on the whole LCD (also comprising the zone that does not have Presentation Function) also can pass through part light, make described details in a play not acted out on stage, but told through dialogues district also can show the color of certain brightness, the color shading that causes whole display, influence the colored display effect of display, and this phenomenon is more serious in observation place with great visual angle.
Summary of the invention
The purpose of this invention is to provide a kind of background color and can realize colored liquid crystal indicator that shows in zone and preparation method thereof uniformly.
For addressing the above problem, the invention provides a kind of passive drive liquid crystal display device, comprising:
First substrate that is oppositely arranged and second substrate,
Be closed in the liquid crystal layer between described first substrate and second substrate,
Be positioned at the color filter film of described second substrate, be positioned at second transparency conducting layer of described color filter film towards described liquid crystal layer one side towards described liquid crystal layer one side,
Be positioned at first transparency conducting layer of described first substrate, wherein, all have at least one class pattern electrode of mutual correspondence in first transparency conducting layer and second transparency conducting layer towards described liquid crystal layer one side;
Color filter film comprises periodically redness, green and blue three kinds of optical filters of repeated arrangement, the pattern electrode of described first transparency conducting layer or second transparency conducting layer comprises the sub-electrode of periodic arrangement, described sub-electrode at least with described redness, green and blue three kinds of optical filters in a kind of corresponding
Under the driving voltage effect that puts on described pattern electrode, this liquid crystal indicator illustrates and the corresponding a plurality of color regions with constant color of at least one class pattern electrode.
Described at least one class pattern electrode comprises: first kind pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters.
Described at least one class pattern electrode comprises: the first kind pattern electrode and the second class pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters,
In the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding.
Described at least one class pattern electrode comprises: first kind pattern electrode and the 3rd class pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters,
The sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and blue three kinds of optical filters.
Described at least one class pattern electrode comprises: the second class pattern electrode and the 3rd class pattern electrode, wherein,
In the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding,
The sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and blue three kinds of optical filters.
Described at least one class pattern electrode comprises: first kind pattern electrode, the second class pattern electrode and the 3rd class pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters,
In the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding,
The sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and blue three kinds of optical filters.
Described redness, green and blue three kinds of optical filters are shape of stripes, and adjacent successively arrangement.
Described first substrate and second substrate are transparent glass substrate.
Described liquid crystal layer comprises the liquid crystal molecule of TN type or STN type.
Described first transparency conducting layer and second transparency conducting layer also have dielectric film towards the one side of described liquid crystal layer, and described dielectric film has oriented film towards the one side of described liquid crystal layer, and described first substrate and second substrate have polaroid away from the one side of liquid crystal layer.
Compared with prior art, technique scheme has the following advantages:
In the described passive drive liquid crystal display device, be used for applying voltage and drive first transparency conducting layer and second transparency conducting layer that liquid crystal molecule turns to, all has at least one class pattern electrode, corresponding pattern electrode in two transparency conducting layers, described pattern electrode has a sub-electrode that comprises periodic arrangement at least, described sub-electrode at least with described redness, a kind of corresponding in green and three kinds of optical filters of blueness, that is to say, sub-electrode can corresponding one or more optical filters, and it is close with the optical filter shape, position corresponding (being not that three kinds of optical filters are all to there being sub-electrode), and, the optical filter combination that the sub-electrode of different pattern electrodes is corresponding different, the corresponding liquid crystal molecule turns to and printing opacity by driving separately, thereby can illustrate with the shape and the position of at least one class pattern electrode corresponding, at least one class color region with constant color.
For example, the first kind color region of first kind pattern electrode correspondence need show redness, then the sub-electrode of first kind pattern electrode is with regard to corresponding Red lightscreening plate, the position that is sub-electrode and Red lightscreening plate is corresponding, the shape size is close, and green and blue two kinds of optical filters corresponding position in described first and second transparency conducting layers does not have relative sub-electrode, when applying driving voltage like this, only there is the liquid crystal molecule in the Red lightscreening plate position to turn to and printing opacity, and the position of green and blue two kinds of optical filter correspondences can not printing opacity owing to there is not comparative electrode, so after the color filter film filtration, first kind color region in first kind pattern electrode correspondence is just seen redness, in like manner, first kind color region also can show green or yellow.
By that analogy, the second class color region of the second class pattern electrode correspondence need show yellow, then the sub-electrode of the second class pattern electrode is with regard to corresponding redness and green color filter, be that sub-electrode is corresponding with the position of red and green color filter, shape is big or small close, and blue color filter corresponding position in described first and second transparency conducting layers does not have relative sub-electrode, according to color addition principle, first kind color region is just seen yellow.And red, green and blue three kinds of optical filters corresponding position in described first and second transparency conducting layers is equipped with sub-electrode, like this according to color addition principle, power up and just see white when showing.
In the different different pattern electrode structures of color region design, make its sub-electrode correspondence at least with described redness, green and blue three kinds of optical filters in a kind of, so can realize the colored demonstration in zone, nor must adopt pixel cell dot matrix and special-purpose colored drive IC.
The present invention is owing to adopt color filter film to realize that the colour of fixed area shows, for large-area color lump figure colour filter mode, color filter film is made up of the optical filter that the size magnitude surpasses a plurality of periodicity repeated arrangement of resolution of eye, the color region of powering state is not the same with the regional Show Color that does not have pattern electrode, all be uniform details in a play not acted out on stage, but told through dialogues, can avoid the interference of color lump and form uniform ground color.
Description of drawings
Shown in accompanying drawing, above-mentioned and other purpose, feature and advantage of the present invention will be more clear.Reference numeral identical in whole accompanying drawings is indicated identical part.Painstakingly do not draw accompanying drawing, focus on illustrating purport of the present invention by physical size equal proportion convergent-divergent.
Fig. 1 is the partial schematic diagram of present a kind of vehicle LCD;
Fig. 2 is the structural representation of passive drive liquid crystal display device described in the embodiment of the invention;
Fig. 3 is the vertical view of color filter film among Fig. 2;
Fig. 4 is the vertical view of first transparency conducting layer or second transparency conducting layer in the embodiment of the invention;
Fig. 5 is used for the synoptic diagram of vehicle-mounted Displaying Meter for passive drive liquid crystal display device of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Set forth a lot of details in the following description so that fully understand the present invention, implement but the present invention can also adopt other to be different from alternate manner described here, so the present invention has not been subjected to the restriction of following public specific embodiment.
Secondly, the present invention is described in detail in conjunction with synoptic diagram, when the embodiment of the invention is described in detail in detail; for ease of explanation; the sectional view of indication device structure can be disobeyed general ratio and be done local the amplification, and described synoptic diagram is example, and it should not limit the scope of protection of the invention at this.The three dimensions size that in actual fabrication, should comprise in addition, length, width and the degree of depth.
In fields such as vehicle-mounted demonstration and industry control demonstrations, adopt lower-cost passive drive nematic LCD usually, show fixing color in fixed area.Yet above-mentioned LCD is under the irradiation of backlight, the details in a play not acted out on stage, but told through dialogues district that does not power up also can permeation parts light or the reflection extraneous light, make described details in a play not acted out on stage, but told through dialogues district also can show the color of certain brightness, the color shading that causes whole LCD, influence the colored display effect of LCD, and this phenomenon is more serious in observation place with great visual angle.
The inventor discovers, existing energy is realized in the LCD of above-mentioned colored display mode, the back side or other position at display screen adopt the specific color lump figure of ink printing to filter, described color lump figure comprises a plurality of color lumps that have constant color in fixing zone, do not have the zone of Presentation Function not have color lump, thereby show different colors in zones of different.Because a kind of color lump is exactly a color viewing area, when the electrode of this color viewing area correspondence does not power up, its color lump can show certain brightness color because of or reflection extraneous light backlight by part, so caused the color shading of whole LCD.
Therefore, improve the colored display effect of above-mentioned LCD, just need to seek a kind of colored display mode that does not adopt color lump figure, the while is simple in structure, cost is lower, is applicable to fields such as vehicle-mounted demonstration.
Based on this, the invention provides a kind of passive drive liquid crystal display device, also can be described as regional colored nematic (it comprises for area color nematic, ACN) LCD:
First substrate that is oppositely arranged and second substrate, be closed in the liquid crystal layer between described first substrate and second substrate, be positioned at the color filter film of described second substrate towards described liquid crystal layer one side, be positioned at second transparency conducting layer of described color filter film towards described liquid crystal layer one side, be positioned at first transparency conducting layer of described first substrate towards described liquid crystal layer one side, wherein, all has corresponding at least one class pattern electrode in first transparency conducting layer and second transparency conducting layer, in other words, the shape size of the pattern electrode in two transparency conducting layers is identical, the position is corresponding;
Described color filter film comprises the periodically redness of repeated arrangement, green and blue three kinds of optical filters, described pattern electrode comprises the sub-electrode of periodic arrangement, described sub-electrode at least with described redness, a kind of corresponding in green and three kinds of optical filters of blueness, that is to say, sub-electrode can corresponding one or more optical filters, and it is identical with the optical filter shape, position corresponding (being not that three kinds of optical filters are all to there being sub-electrode), and, the optical filter combination that the sub-electrode of different pattern electrodes is corresponding different, the corresponding liquid crystal molecule turns to and printing opacity by driving separately, thereby can illustrate with the shape and the position of at least one class pattern electrode corresponding, at least one class color region with constant color.
Describe a preferred embodiment of passive drive liquid crystal display device of the present invention in detail below in conjunction with accompanying drawing.Be outstanding characteristics of the present invention, do not provide in the accompanying drawing and the inevitable directly related part of inventive point of the present invention.
Fig. 2 is the structural representation of passive drive liquid crystal display device described in the present embodiment, and Fig. 3 is the vertical view of color filter film among Fig. 2, and Fig. 4 is the vertical view of first transparency conducting layer or second transparency conducting layer in the present embodiment.(Twisted Nematic, TN) LCD is an example with twisted nematic in the present embodiment.
Shown in Fig. 2 to 4, described passive drive liquid crystal display device comprises:
Be closed in the liquid crystal layer 18 between described first substrate 10 and second substrate 11,
Be positioned at the color filter film 14 of described second substrate 11, be positioned at second transparency conducting layer 25 of described color filter film 14 towards described liquid crystal layer 18 one sides towards described liquid crystal layer 18 one sides,
Be positioned at first transparency conducting layer 15 of described first substrate 10 towards described liquid crystal layer 18 one sides, wherein, all have three class pattern electrodes in first transparency conducting layer 15 and second transparency conducting layer 25, the shape size of the pattern electrode in two transparency conducting layers is close, the position is corresponding.
Be closed between first substrate 10 and second substrate 11 by the liquid crystal molecule of the frame glue 13 around the liquid crystal layer 18 described liquid crystal layer 18.
Wherein, color filter film 14 comprises periodically three kinds of optical filters of redness, green and blueness (R, G, B) of repeated arrangement, for example, as shown in Figure 3, described R, G, three kinds of optical filters of B are shape of stripes, and adjacent successively arrangement, and their width all exceeds the resolution of human eye, when not having light to see through, whole color filter film 14 is shown as uniform details in a play not acted out on stage, but told through dialogues.
With reference to Fig. 2 and (dotted line is represented optical filter among Fig. 4) shown in Figure 4, described three class pattern electrodes comprise: first kind pattern electrode 31, the second class pattern electrode 32 and the 3rd class pattern electrode 33, wherein:
Described first kind pattern electrode 31 comprises a plurality of sub-electrodes 41 of periodic arrangement, a kind of corresponding in described sub-electrode 41 and described redness, green and the blue three kinds of optical filters, for example, the sub-electrode 41a of first kind pattern electrode 31a is corresponding with Red lightscreening plate, promptly in the zone of first kind pattern electrode 31a correspondence, sub-electrode 41a is with the Red lightscreening plate shape and size is close, the position is corresponding.The rest may be inferred, and the sub-electrode 41b of first kind pattern electrode 31b is corresponding with green color filter, and the sub-electrode 41c of first kind pattern electrode 31c is corresponding with blue color filter.
The described second class pattern electrode 32 comprises a plurality of sub-electrodes 42 of periodic arrangement, in described sub-electrode 42 and described redness, green and the blue three kinds of optical filters two kinds are corresponding, for example, the sub-electrode 42a of the second class pattern electrode 32a is corresponding with redness and green color filter, promptly in the zone of the second class pattern electrode 32a correspondence, sub-electrode 42a is with redness and green color filter shape and size is close, the position is corresponding; And the like, in the zone of the second class pattern electrode 32b correspondence, its sub-electrode 42b also can be corresponding with red and blue two kinds of optical filters, gives unnecessary details no longer one by one.
The sub-electrode of described the 3rd class pattern electrode 33 and described redness, green and blue three kinds of optical filters are corresponding, promptly the shape of sub-electrode and three kinds of optical filter integral body and big or small close, the position is corresponding.
Be with traditional pattern electrode difference, the first kind pattern electrode 31 and the second class pattern electrode 32 are not the whole retes that is made of transparent conductive material, but the stripe of hollow out, for first kind pattern electrode 31, the position of corresponding two kinds of optical filters does not have comparative electrode in first and second transparency conducting layers, position for corresponding a kind of optical filter in the second class pattern electrode, 32, the first and second transparency conducting layers does not have comparative electrode, thereby forms the pattern electrode of palisade.The 3rd class pattern electrode 33 is similar with traditional pattern electrode, the complete rete with given shape that is made of transparent conductive material.
Above described " close " is meant, the pattern electrode of one of first transparency conducting layer and second transparency conducting layer is relatively large, " not having comparative electrode " is meant, one of two transparency conducting layers are not established sub-electrode, but complete pattern, can make that like this pattern electrode of two transparency conducting layers is identical and the position is corresponding, reduce manufacture difficulty, help reducing cost.
In addition, described first substrate 10 and second substrate 11 can be transparent glass substrate, comprise the liquid crystal molecule of twisted nematic in the described liquid crystal layer, and described first transparency conducting layer 15 and second transparency conducting layer 25 are transparent conductive material, for example ITO.Can comprise also in the liquid crystal layer described in other embodiment of the present invention that (Super Twisted Nematic STN) waits the nematic crystal molecule of other type to super-twist nematic.
Described first transparency conducting layer 15 and second transparency conducting layer 25 can also have dielectric film 16 towards the one side of described liquid crystal layer 18, described dielectric film 16 can also have oriented film 17 towards the one side of described liquid crystal layer 18, described oriented film 17 is used to make liquid crystal molecule and direction that be parallel to substrate surface specific along to arrange, described first substrate 10 and second substrate 11 have polaroid 12 away from the one side of liquid crystal layer 18, and the backlight module (not shown) is arranged at the below of first substrate 10.
The principle of work of above-mentioned passive drive liquid crystal display device is as follows:
First transparency conducting layer and second transparency conducting layer are used to apply voltage and drive liquid crystal molecule and turn to, can deflect and printing opacity after liquid crystal molecule in the three class pattern electrode corresponding regions wherein powers up, show fixing color through the optical filtering of color filter film and in the corresponding region.
For example, the corresponding Red lightscreening plate of the sub-electrode 41a of first kind pattern electrode 31a, the position that is sub-electrode 41a and Red lightscreening plate is corresponding, shape and size are close, and green and blue two kinds of optical filters corresponding position in described first and second transparency conducting layers does not have comparative electrode, so, when first kind pattern electrode 31a is applied driving voltage, only there is the liquid crystal molecule in the Red lightscreening plate corresponding region to turn to and printing opacity, and the zone of green and blue two kinds of optical filter correspondences can not printing opacity owing to there is not comparative electrode, so after the color filter film filtration, just see redness in the zone of first kind pattern electrode 31a correspondence.More than the zone that forms by single optical filter be first kind color region, in like manner, first kind color region can show redness, green or yellow.
By that analogy, corresponding redness of the sub-electrode 42a of the second class pattern electrode 32a and green color filter, be that sub-electrode 42a is corresponding with the position of red and green color filter, the shape size is close, and blue color filter corresponding position in described first and second transparency conducting layers does not have comparative electrode, so, when the second class pattern electrode 32a is applied driving voltage, liquid crystal molecule in red and green two kinds of optical filter corresponding regions turns to and printing opacity, and the zone of blue color filter correspondence can not printing opacity owing to there is not comparative electrode, according to color addition principle, after the color filter film filtration, yellow is just seen in zone in the second class pattern electrode 32a correspondence, more than the zone that forms by two kinds of optical filters be the second class color region, in like manner, the second class color region can show yellow, purple or light blue etc.
And the sub-electrode 43 of the 3rd class pattern electrode 33 is corresponding with described redness, green and blue three kinds of optical filters, promptly red, green and blue three kinds of optical filters corresponding position in described first and second transparency conducting layers is equipped with electrode, when the 3rd class pattern electrode 33 is applied driving voltage, liquid crystal molecule in three kinds of optical filter corresponding regions (whole pattern electrode zone) all turns to and printing opacity, according to color addition principle, white is just seen in zone in the 3rd class pattern electrode 33 correspondences, also is the 3rd class color region.
As seen from the above, a plurality of pattern electrodes are set as required, the sub-electrode shape of each pattern electrode and position at least with described redness, green and blue three kinds of optical filters in a kind of corresponding, so can obtain a plurality of fixing color regions, for example, red, green, blue, yellow and white, no matter whether the zone that pattern electrode is not set apply that voltage is all light tight then not to have color, thereby realized regional colored the demonstration.
Pattern electrode shown in Fig. 4 is synoptic diagram, and following Fig. 5 provides the example that described passive drive liquid crystal display device is used for vehicle-mounted Displaying Meter, and the part of whole LCD only is shown among the figure.
As shown in Figure 5, comprise rotating speed viewing area and speed viewing area in this Vehicular display device.Have a plurality of the 3rd class pattern electrodes in the described speed viewing area, wherein, each numeral all is made up of 7 the 3rd class pattern electrodes 53 in three numerals of display speed value, according to the detected velocity amplitude of speed pickup, the drive IC of display is controlled corresponding pattern electrode 53a liquid crystal layer is applied driving voltage, thereby demonstrate the velocity amplitude 155 of current vehicle operating with white, and the pattern electrode 53b correspondence that does not power up is regional light tight, is the details in a play not acted out on stage, but told through dialogues district of Show Color not.Have a plurality of first kind pattern electrodes 51 and a plurality of second class pattern electrode 52 in the described rotating speed viewing area, wherein, a plurality of second class pattern electrodes 52 are formed the segment encode of 0～6000r/min scope, and the segment encode that a plurality of first kind pattern electrodes 51 are formed greater than 6000r/min, when rotating speed during at 5000r/min, according to the detected tachometer value of speed probe, the drive IC of display is controlled corresponding pattern electrode liquid crystal layer is applied driving voltage, liquid crystal deflecting element in the zone of corresponding 0～5000r/min segment encode and printing opacity, thereby show yellow, and the above details in a play not acted out on stage, but told through dialogues district of segment encode zone for not powering up of 5000r/min.Dotted line among Fig. 5 is represented the RGB color filter of striated periodic arrangement because the width of each color filter all surpasses the resolution of human eye, for the observer above-described details in a play not acted out on stage, but told through dialogues district color evenly, unify,
Liquid crystal indicator in the present embodiment is owing to adopt color filter film to realize that the colour of fixed area shows, for large-area color lump figure colour filter mode in the prior art, color filter film is made up of the optical filter that the size magnitude surpasses a plurality of periodicity repeated arrangement of resolution of eye, under powering state, the details in a play not acted out on stage, but told through dialogues district is formed in the zone of the pattern electrode correspondence that does not power up and the zone that pattern electrode is not set, whole details in a play not acted out on stage, but told through dialogues district is coated with uniform color filter film, even the liquid crystal layer in part printing opacity details in a play not acted out on stage, but told through dialogues backlight district is arranged, its Show Color is the same, therefore all be uniform details in a play not acted out on stage, but told through dialogues, can avoid the interference of color lump and form uniform ground color.
In addition,, also just needn't adopt pixel cell dot matrix and special-purpose colored drive IC, have better simply structure, help reducing cost, be applicable to fields such as vehicle-mounted demonstration and industry control demonstration because each pattern electrode shows fixing color.
Above embodiment has provided a kind of optimized technical scheme, promptly comprises three class pattern electrodes, and in addition, the passive drive liquid crystal display device that technical solution of the present invention provides can also design the pattern electrode of a class or two classes according to the needs of field color demonstration.
In another embodiment of passive drive liquid crystal display device of the present invention, described at least one class pattern electrode comprises: the first kind pattern electrode and the second class pattern electrode, wherein, in a kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters, the sub-electrode of the described second class pattern electrode and described redness, green and three kinds of optical filters of blueness two kinds are corresponding.
In the another embodiment of passive drive liquid crystal display device of the present invention, described at least one class pattern electrode comprises: first kind pattern electrode and the 3rd class pattern electrode, wherein, a kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters, the sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and three kinds of optical filters of blueness.
At passive drive liquid crystal display device of the present invention again among the embodiment, described at least one class pattern electrode comprises: the second class pattern electrode and the 3rd class pattern electrode, wherein, in the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding, and the sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and three kinds of optical filters of blueness.
In like manner, in the passive drive liquid crystal display device of the present invention, described at least one class pattern electrode also can only comprise first kind pattern electrode, the second class pattern electrode and the 3rd class pattern electrode one of them.
Among the above embodiment, three kinds of optical filters in the color filter film are with striated periodicity repeated arrangement, in fact, R, G, three kinds of optical filters of B can also be other shape, for example, R, G, three optical filters of B are rectangle, and adjacent successively arrangement constitutes a unit, and a plurality of described unit repeated arrangement forms cell matrix.
The method for making and the conventional art of the described passive drive liquid crystal display device of the embodiment of the invention are similar, difference is to form in the process of first transparency conducting layer and second transparency conducting layer, utilize photoetching process to remove transparent conductive material to form at least one class pattern electrode, the shape of described pattern electrode is by the mask figure decision of design in advance.
Described liquid crystal indicator can be applied to TN, STN, and various passive drive liquid crystal display devices such as vertical orientation display realize that field color shows.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.
Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all still belongs in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (5)
1. a passive drive liquid crystal display device is characterized in that, comprising:
First substrate that is oppositely arranged and second substrate,
Be closed in the liquid crystal layer between described first substrate and second substrate,
Be positioned at the color filter film of described second substrate, be positioned at second transparency conducting layer of described color filter film towards described liquid crystal layer one side towards described liquid crystal layer one side,
Be positioned at first transparency conducting layer of described first substrate, wherein, all have at least one class pattern electrode of mutual correspondence in first transparency conducting layer and second transparency conducting layer towards described liquid crystal layer one side;
Color filter film comprises periodically redness, green and blue three kinds of optical filters of repeated arrangement, the pattern electrode of described first transparency conducting layer or second transparency conducting layer comprises the sub-electrode of periodic arrangement, described sub-electrode at least with described redness, green and blue three kinds of optical filters in a kind of corresponding;
Under the driving voltage effect that puts on described pattern electrode, this liquid crystal indicator illustrates and the corresponding a plurality of color regions with constant color of at least one class pattern electrode; Wherein,
Described at least one class pattern electrode comprises: the first kind pattern electrode and the second class pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters,
In the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding
Perhaps,
Described at least one class pattern electrode comprises: first kind pattern electrode and the 3rd class pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters,
The sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and blue three kinds of optical filters;
Perhaps,
Described at least one class pattern electrode comprises: the second class pattern electrode and the 3rd class pattern electrode, wherein,
In the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding,
The sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and blue three kinds of optical filters;
Perhaps,
Described at least one class pattern electrode comprises: first kind pattern electrode, the second class pattern electrode and the 3rd class pattern electrode, wherein,
A kind of corresponding in the sub-electrode of described first kind pattern electrode and described redness, green and the blue three kinds of optical filters,
In the sub-electrode of the described second class pattern electrode and described redness, green and the blue three kinds of optical filters two kinds are corresponding,
The sub-electrode of described the 3rd class pattern electrode is corresponding with described redness, green and blue three kinds of optical filters.
2. passive drive liquid crystal display device according to claim 1 is characterized in that, described redness, green and blue three kinds of optical filters are shape of stripes, and adjacent successively arrangement.
3. passive drive liquid crystal display device according to claim 2 is characterized in that, described first substrate and second substrate are transparent glass substrate.
4. passive drive liquid crystal display device according to claim 2 is characterized in that, described liquid crystal layer is nematic liquid crystal molecule.
5. passive drive liquid crystal display device according to claim 2, it is characterized in that, described first transparency conducting layer and second transparency conducting layer also have dielectric film towards the one side of described liquid crystal layer, described dielectric film has oriented film towards the one side of described liquid crystal layer, and described first substrate and second substrate have polaroid away from the one side of liquid crystal layer.
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| CN2009101664865A CN101634766B (en) | 2009-08-19 | 2009-08-19 | Passive drive liquid crystal display device |
| PCT/CN2010/073135 WO2011020355A1 (en) | 2009-08-19 | 2010-05-24 | Passive drive liquid crystal display device |
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| CN101634766B (en) * | 2009-08-19 | 2011-09-28 | 信利工业(汕尾)有限公司 | Passive drive liquid crystal display device |
| CN106647063B (en) * | 2017-03-03 | 2019-10-25 | 汕头超声显示器（二厂）有限公司 | A kind of passive matrix liquid crystal display |
| CN107878202A (en) * | 2017-11-28 | 2018-04-06 | 黑龙江天有为电子有限责任公司 | A kind of segment encode liquid crystal display instrument with transparent window |
| CN110861467A (en) * | 2019-11-12 | 2020-03-06 | 宁波福尔达智能科技有限公司 | Automobile air conditioner controller |
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| CN86102457A (en) * | 1985-04-12 | 1986-10-15 | 株式会社日立制作所 | Liquid crystal colour disply |
| CN201159812Y (en) * | 2008-02-01 | 2008-12-03 | 信利半导体有限公司 | Passive drive vertical orientation LCD suitable for vehicle mounting |
| CN101493620A (en) * | 2008-01-21 | 2009-07-29 | Nec液晶技术株式会社 | Active matrix type liquid crystal display device and manufacturing process for the same |
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| KR100830393B1 (en) * | 2002-04-01 | 2008-05-20 | 삼성전자주식회사 | simple transmissive and reflective type liquid crystal device and method of manufacturing the same |
| JP2005084541A (en) * | 2003-09-10 | 2005-03-31 | Toppoly Optoelectronics Corp | Color filter structure |
| CN200983018Y (en) * | 2006-06-23 | 2007-11-28 | 比亚迪股份有限公司 | Color filtering slice |
| CN101477265B (en) * | 2008-01-03 | 2012-02-01 | 奇美电子股份有限公司 | LCD device, multi-vision angle LCD panel and its manufacturing method |
| CN101634766B (en) * | 2009-08-19 | 2011-09-28 | 信利工业(汕尾)有限公司 | Passive drive liquid crystal display device |
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| CN86102457A (en) * | 1985-04-12 | 1986-10-15 | 株式会社日立制作所 | Liquid crystal colour disply |
| CN101493620A (en) * | 2008-01-21 | 2009-07-29 | Nec液晶技术株式会社 | Active matrix type liquid crystal display device and manufacturing process for the same |
| CN201159812Y (en) * | 2008-02-01 | 2008-12-03 | 信利半导体有限公司 | Passive drive vertical orientation LCD suitable for vehicle mounting |
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