CN101303466A - Liquid crystal display device and method for manufacturing the same - Google Patents
Liquid crystal display device and method for manufacturing the same Download PDFInfo
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- CN101303466A CN101303466A CNA200810125873XA CN200810125873A CN101303466A CN 101303466 A CN101303466 A CN 101303466A CN A200810125873X A CNA200810125873X A CN A200810125873XA CN 200810125873 A CN200810125873 A CN 200810125873A CN 101303466 A CN101303466 A CN 101303466A
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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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- 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
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
Abstract
The present invention provides a liquid crystal display device, by which it is possible to improve color reproducibility and contrast by adequately setting a value of Deltan.d of each color without changing thickness of liquid crystal layer. A partition wall PT made of resin is prepared between pixels, which comprises color filter columns of CF-R, CF-G and CF-B. Within each of the pixels partitioned by the partition wall, liquid crystals LC(R), LC(G), and LC(B) having different values of Deltan are filled In the pixels partitioned by the partition wall. The partition wall PT also fulfills the function as a spacer to maintain cell gap at a predetermined value.
Description
Technical field
The present invention relates to liquid crystal indicator, relate in particular to the colourity that suppresses to cause at the visual angle and change to improve the Liquid crystal disply device and its preparation method of contrast.
Background technology
In liquid crystal indicator, contrast and visual angle change according to the product Δ nd of bed thickness (cel-gap) d of the refractive index anisotropy Δ n of liquid crystal and liquid crystal layer.The occasion that shows under normal black pattern, the contrast of frontal reduces.In addition, undertaken in the panchromatic liquid crystal indicator of multicolor displaying by using with a plurality of color filters of red, green, blue 3 looks as representative, owing to pass through the demonstration light frequency difference that liquid crystal also sees through color filter, if so visual angle change, then Δ nd changes, and colourity changes.
Figure 12 is the figure of the structure example of a pixel of explanation liquid crystal indicator.Figure 12 (a) is a planimetric map, and Figure 12 (b) illustrates along the cross section of the A-A` line of Figure 12 (a).This liquid crystal indicator is so-called TN type, therein the back side of a dielectric substrate (calling glass substrate in the following text) the SUB1 pixel electrode PX that has thin film transistor (TFT) (TFT) and driven by this TFT.Although each pixel electrode PX constitutes the colored sub-pix (sub-pixel) that shows, for convenience of explanation, unless need only be referred to as pixel especially.In Figure 12, omit for the diagram of another piece glass substrate that comparative electrode is set.In addition, liquid crystal indicator according to combination on display panels have driving circuit or display control circuit substrate, backlight, and the mode of other component parts constitute, but, the point that the present invention paid close attention to is the formation of display panels, display panels is called liquid crystal indicator describes.
Glass substrate SUB1 is also referred to as TFT substrate or active array substrate, has the grid G T, the gate insulation layer GI that are made of gate lines G L, preferably adopts semiconductor layer AS, n+ semiconductor layer (ohmic contact layer), source electrode (perhaps drain electrode) and the drain electrode (or source electrode) of silicon materials) SD, protective seam (passivation layer) PAS, reach pixel electrode PX.Pixel electrode PX is electrically connected with source electrode (or drain electrode) by the through hole TH that is opened on the protective seam PAS.In addition, drain electrode SD (or source electrode) is extended by data line (drain line) DL and is formed on the n+ semiconductor layer.In this configuration example, dispose electric capacity line CE in the lower floor of pixel electrode across pixel region.
Figure 13 is the synoptic diagram of the light transmission rate of all kinds of explanation liquid crystal indicator shown in Figure 12.In the figure, identical with Figure 12 symbol is corresponding with the identical functions part.SUB2 is above-mentioned another piece glass substrate, because be provided with color filter CF-R (red), CF-G (green), CF-B (indigo plant), this substrate is called color filter substrate (CF substrate).Each of color filter CF-R, CF-G, CF-B all constitutes the colored sub-pix (sub-pixel) that shows respectively, and these 3 sub-pixs become one group to constitute colored 1 the pixel (unit picture element: pixel) that shows.Each of color filter CF R, CF-G, CF-B is divided by photomask (black matrix") BM respectively, forms comparative electrode (common electrode) CT thereon.And, on inner surface, form alignment films (not shown).This alignment films has been given the liquid crystal aligning control function of friction treatment etc.In addition, on the inner surface of TFT substrate S UB1, also form same alignment films, give same liquid crystal aligning control function.On the outside surface of TFT substrate S UB1 and CF substrate S UB2, be respectively equipped with down polaroid POL1, upper polarizer POL2.
The arrow that makes progress among Figure 13 is represented to see through TFT substrate S UB1, CF substrate S UB2 and the light of conduct observation light ejaculation by the white light of not shown ejaculation backlight.In this structure, liquid crystal layer LC and panchromatic sub-pix are common, and the bed thickness of liquid crystal layer of all kinds (that is cel-gap) is identical.Wherein, the transmitance of sub-pix (light transmission rate) T represents by following formula with the central wavelength lambda r, the refractive index anisotropy Δ n of liquid crystal, the bed thickness d of liquid crystal layer that see through look of sub-pix,
T＝sin
2{πΔn·d/λr}。
The light transmission rate of each pixel and difference.
Figure 14 is the synoptic diagram of example that the light transmission rate of each pixel arrangement is shown.The color filter CF R that is provided with in the not homochromy pixel, the light transmission rate of CF-G, CF-B are different.As shown in figure 14, be 0.0968 at the Δ n of liquid crystal, when the bed thickness of liquid crystal layer LC is 2.85 μ m, be 100% if conduct is provided with the green pixel value of color filter CF-G, then red pixel is 94.5%, blue pixel is 87.9%.Colourity changes owing to the transmitance difference of 3 looks, and under the show state of normal on-mode, the demonstration that should be white in color is coloured to yellow, and under the show state of normally closed pattern, the demonstration that should be black is colored demonstration.
In order to suppress the variation of such colourity, in patent documentation 1, propose to make the transparent insulating layer (top coat that covers pixel electrode or color filter, top coating) bed thickness is for difference of all kinds, or the bed thickness that makes color filter proposes to make the many gap mode of the thickness of the glass substrate that forms pixel electrode with each pixel variation in addition for difference of all kinds in patent documentation 2.
The flat 7-175050 communique of [patent documentation 1] TOHKEMY
The flat 7-28071 communique of [patent documentation 2] TOHKEMY
Summary of the invention
(problem that invention will solve)
At the thickness that makes top coat for equal difference of all kinds, the bed thickness that perhaps makes color filter is in the disclosed scheme in the different patent documentation 1 of all kinds, be difficult to correctly set the bed thickness of each layer, and, be easy to generate deviation for the difference in height between the adjacent pixel.And, be difficult to for each pixel, all set suitable Δ nd value.In addition, in the scheme that the disclosed thickness that makes glass substrate of patent documentation 2 changes according to each pixel, the operation that not only is used for the processing of glass substrate increases, and also is difficult to form subtly for the difference in height that is coated between dielectric films such as various films between adjacent pixels and pixel electrode, top coat.
The 1st purpose of the present invention is to provide a kind of liquid crystal indicator, and it does not change the bed thickness of liquid crystal layer, sets Δ nd of all kinds suitably, to improve color reproduction and contrast.In addition, the 2nd purpose of the present invention is to provide the manufacture method of above-mentioned liquid crystal indicator.
(scheme that is used to deal with problems)
In order to realize above-mentioned the 1st purpose, liquid crystal indicator of the present invention is characterised in that, have: be provided with the 2nd substrate of the 1st substrate of the many pixels that show that look different, relative configuration with this substrate and be held on the 1st substrate and the 2nd substrate between liquid crystal layer, the refractive index anisotropy Δ n (λ) that makes the above-mentioned liquid crystal layer of stipulating with any wavelength X is according to the demonstration look of pixel and difference.
In addition, liquid crystal indicator of the present invention is characterised in that, have: the 2nd substrate of the 1st substrate of the many pixels that show that look different, relative configuration with this substrate is set and be held on the 1st substrate and the 2nd substrate between liquid crystal layer, by showing that look mutually different a plurality of pixels constitute the unit of display, make with the refractive index anisotropy Δ n (λ) of the above-mentioned liquid crystal layer of any wavelength X regulation according to the demonstration look of pixel and difference.
In addition, it is characterized in that having the center light wavelength X for being applicable to
1First liquid crystal layer and being applicable to of first pixel of demonstration look have second liquid crystal layer that other show second pixel of looks, at above-mentioned first liquid crystal layer to wavelength X
1The refractive index anisotropy be Δ n
1(λ
1), above-mentioned second liquid crystal layer is to wavelength X
1The refractive index anisotropy be Δ n
2(λ
1), when the liquid crystal bed thickness was d, Δ nd was determined by following formula:
sin
2(π·d·Δn
1(λ
1)/λ
1)＞sin
2(π·d·Δn
2(λ
1)/λ
1)
In addition, in liquid crystal indicator of the present invention, be provided for having the different partition walls of dividing between the pixel of look that show.And, it is characterized in that, as this partition wall, further be provided for different showing the 1st partition wall of dividing between the pixel of looks having, and be provided for the 2nd partition wall divided between one or more pixels of identical demonstration look having.
And in order to realize above-mentioned the 2nd purpose, the manufacture method of liquid crystal indicator of the present invention is characterised in that and comprises:
To be formed at the step on the 1st substrate by many pixels that a plurality of pixels that show different demonstration looks respectively constitute;
To have the step that the anisotropic liquid crystal of different refractivity is coated on the respective pixel on above-mentioned the 1st substrate according to above-mentioned each different demonstration look;
On above-mentioned the 1st substrate, mutually dispose the 2nd substrate opposed to each other and encapsulate the step of above-mentioned liquid crystal.
In the present invention, gunite is preferably adopted in the coating of above-mentioned liquid crystal.
(invention effect)
Certain by the bed thickness that makes liquid crystal layer, the Δ n of the liquid crystal that constitutes each pixel is changed respectively.The Δ n of each pixel is set at and can makes sin for the center light wavelength X of pixel
2(Δ nd/ λ) equals 1, thereby the bed thickness of realizing need not changing liquid crystal layer just can improve the liquid crystal indicator of color reproduction and contrast.In addition, in above-mentioned liquid crystal layer, have and be applicable to have the center light of being wavelength X
1One deck liquid crystal layer of pixel of demonstration look, and be applicable to have other liquid crystal layers that other show the pixel of looks;
If with an above-mentioned wherein liquid crystal layer to wavelength X
1The refractive index anisotropy be designated as Δ n
1(λ
1), with above-mentioned another liquid crystal layer to wavelength X
1The refractive index anisotropy be designated as Δ n
2(λ
1), the liquid crystal bed thickness is designated as d, utilize inequality
Sin
2(π d Δ n
1(λ
1)/ λ
1)＞sin
2(π d Δ n
2(λ
1)/λ
1) determine Δ nd, thus in practicality, can obtain good effect.
Description of drawings
Fig. 1 is the schematic cross-section of explanation according to the embodiment 1 of liquid crystal indicator of the present invention;
Fig. 2 is the floor map of explanation according to the embodiment 1 of liquid crystal indicator of the present invention;
Fig. 3 is the planimetric map that the pixel of A 4 * 2 the arranged partly of having amplified Fig. 2 is shown;
Fig. 4 is the schematic cross-section of explanation according to the TFF substrate of the manufacture method of the embodiment 1 of liquid crystal indicator of the present invention;
Fig. 5 is the figure of explanation according to an example of the liquid crystal coating method in the manufacture method of the embodiment 1 of liquid crystal indicator of the present invention;
Fig. 6 is the schematic cross-section of explanation according to the embodiment 2 of liquid crystal indicator of the present invention;
Fig. 7 is the figure of explanation according to an example of liquid crystal coating method in the manufacture method of the embodiment 2 of liquid crystal indicator of the present invention, identical with Fig. 5;
Fig. 8 is the planimetric map of explanation according to the major part of the embodiment 3 of liquid crystal indicator of the present invention;
Fig. 9 is floor map embodiment 4, with Fig. 2 identical of explanation according to liquid crystal indicator of the present invention;
Figure 10 is planimetric map pixel, identical with Fig. 8 that 16 * 4 arranged of the B part of having amplified Fig. 2 is shown;
Figure 11 is floor map embodiment 5, with Fig. 9 identical of explanation according to liquid crystal indicator of the present invention;
Figure 12 is the key diagram of configuration example of 1 pixel of liquid crystal indicator;
Figure 13 is the synoptic diagram of the light transmission rate of all kinds in the explanation liquid crystal indicator shown in Figure 12; And
Figure 14 is the synoptic diagram of example of transmitance that the light of each pixel arrangement is shown.
(symbol description)
SUB1 TFT substrate (glass substrate) SUB2 CF substrate (glass substrate)
DL data line GL gate line
The red color filter of PX pixel electrode CF-R
The blue color filter of the green color filter CF-B of CF-G
The red liquid crystal of BM black matrix" LC (R)
The blue liquid crystal of liquid crystal LC (B) that LC (G) is green
The PT partition wall
Embodiment
Accompanying drawing below with reference to embodiment is described in detail preferred forms of the present invention.
[embodiment 1]
Fig. 1 is the schematic cross-section of explanation according to the embodiment 1 of liquid crystal indicator of the present invention.(that is, glass substrate SUB1 form TFT on) the back side, and be formed with protective seam, pixel electrode, alignment films at the TFT substrate.On the other hand, on the back side of color filter substrate (that is glass substrate SUB2), be formed with the color filter CF-R (red), the CF-G (green) that divide by black matrix" BM, CF-B (indigo plant), comparative electrode, alignment films etc.Between each pixel, be provided with partition wall PT.In addition, in Fig. 1, the diagram of alignment films, comparative electrode etc. is omitted.Except partition wall PT, the symbol identical with Figure 12～Figure 14 is corresponding to identical part.
Fig. 2 is the floor map of explanation according to the embodiment 1 of liquid crystal indicator of the present invention.In Fig. 2, only show the pixel PX of 8 * 4 arranged in the top and the bottom of four angle parts of the substrate of glass substrate SUB1 and central authorities.In addition, Fig. 3 is the planimetric map that 4 * 2 arranged pixel of the A part of having amplified Fig. 2 is shown.Each sub-pix (sub-pixel, i.e. subpixel) that constitutes 1 pixel (referring to constitute colored 1 pixel (unit picture element, i.e. pixel) that shows here) forms in the zone that is surrounded by gate lines G L and data line DL.In embodiment 1, each pixel of red, green, blue (being each sub-pix) is arranged on the above-below direction of the figure of this shown in the arrow in the drawings.In other words, on this direction of arrow, whole-colored color filter row (R), (G), (B) configuration parallel to each other.
In embodiment 1, between each color filter row (R), (G), (B), be provided with the partition wall PT that forms by resin.Partition wall PT is provided with thereon along data line DL.Inside in each pixel of being divided by partition wall PT has been full of liquid crystal LC (R), LC (G), LC (B) with Δ n of all kinds.This partition wall PT also has the function that cel-gap is remained the interval body of setting.
For the value of the Δ n of each look, the R pixel is 0.1199, and the G pixel is 0.0968, and the B pixel is 0.0824.And the bed thickness d of liquid crystal layer is 2.85 μ m.Therefore, the value of Δ nd is 0.341 μ m for the R pixel, and the G pixel is 0.275 μ m, and the B pixel is 0.234 μ m.
And, to the center light wavelength X of pixel of all kinds, although sin
2(π Δ nd/ λ) equals 1 is desirable, still, has the center light wavelength X for being applicable to
1The liquid crystal layer and being applicable to of pixel of demonstration look have another liquid crystal layer that other show the pixel of looks, with above-mentioned one of them liquid crystal layer to wavelength X
1The refractive index anisotropy be designated as Δ n
1(λ
1), with above-mentioned another liquid crystal layer to wavelength X
1The refractive index anisotropy be designated as Δ n
2(λ
1), the liquid crystal bed thickness is designated as d, Δ nd is by following formula
Sin
2(π d Δ n
1(λ
1)/λ
1)＞sin
2(π d Δ n
2(λ
1)/λ
1) when determining, then no problem in practicality.According to present embodiment, the liquid crystal indicator of can improve color reproduction and contrast.
Fig. 4 is the schematic cross-section of explanation TFT substrate of illustrated manufacture method according to liquid crystal indicator of the present invention in embodiment 1.Fig. 5 is the figure according to an example of the liquid crystal coating method in the manufacture method of the embodiment 1 of liquid crystal indicator of the present invention of explanation explanation in embodiment 1.Among Fig. 4 and Fig. 5, the symbol identical with Fig. 1 is with corresponding with a part.At first, as shown in Figure 4, (that is, glass substrate SUB1 form TFT on) the back side, the coated with orientation film is to give liquid crystal aligning control function (in Fig. 4 and Fig. 5, having omitted the diagram of alignment films) at the TFT substrate.The partition wall PT of resin is set along the data line DL of this TFT substrate.Partition wall PT preferably adopts serigraphy, but also can adopt other mode such as photoetching process.In addition, relative its of thickness of emphasizing to illustrate partition wall among Fig. 4 and Fig. 5 highly is as thin as a wafer.This is in order to emphasize its cause as the function of wall, and in fact, its height is suitable with cel-gap, can adopt the coating of silk screen print method etc. fully to form.In addition, partition wall PT also can be formed at the CF substrate side.
After partition wall PT shown in Figure 4 forms, coated with liquid crystal on each pixel portion of dividing by this partition wall.The coating of liquid crystal as shown in Figure 5, is adopted gunite in the present embodiment.That is, carry out with the spraying and applying head IJH that is provided with a plurality of nozzles corresponding (IJ nozzle) NZ with a plurality of looks.Fig. 5 show on spraying and applying head IJH with as red (R), green (G), blue (B), red (R) ... the mode situation (only illustrating 4 among Fig. 5) of having arranged a plurality of IJ nozzle NZ.On one side make this spraying and applying head IJH and move with respect to the TFT substrate that has formed partition wall PT, one side to the pixel portion of the correspondence liquid crystal drop LD that drips.The Δ n that each dichroic liquid crystal has as mentioned above.
To each pixel portion liquid crystal drop LD that drips, be full of pixel portion.Here the amount of dripping is described.The Pixel Dimensions that is formed on the TFT substrate is taken as 150 μ m * 450 μ m, with cel-gap (liquid crystal bed thickness: d) be taken as 2.85 μ m, the pixel count of line direction (horizontal direction) is taken as 768.At this moment, if liquid crystal drop is of a size of 147.7pl (picoliter), the number that then drips is 1000 of per 1 horizontal direction pixel columns, and this total amount of dripping is 147744pl.
The number that drips of liquid crystal drop LD will influence qualification rate with its size.From the viewpoint of qualification rate, the size of liquid crystal drop is the bigger the better, and is still big if the liquid crystal drop size becomes, and then is difficult to carry out the precision control of the jet quality and the spray volume of IJ nozzle.Therefore, though qualification rate reduces, by the size of the liquid crystal drop that reduces to drip, dripping severally can produce high-quality product more at most more.
According to the embodiment 1 of above explanation, can realize that a kind of colourity that can suppress to cause at the visual angle changes the liquid crystal indicator that shows with the high quality image that improves contrast.
[embodiment 2]
Fig. 6 is the schematic cross-section of explanation according to the embodiment 2 of liquid crystal indicator of the present invention.The symbol identical with Fig. 1 is corresponding with same section.In addition, in Fig. 6, also omit the diagram of alignment films, comparative electrode etc.In embodiment 1, partition wall PT is contacted with the black matrix" BM of CF substrate to divide adjacent pixels.And in the present embodiment, the black matrix" of configuration partition wall PT is partly removed, partition wall PT is directly contacted with the CF substrate.That is, if the cel-gap value is h, the height value of dividing wall PT is H, then H＞h.
Fig. 7 is the figure of explanation according to an example of the liquid crystal coating method identical with Fig. 5 of the manufacture method of the liquid crystal indicator of embodiments of the invention 2.In Fig. 6 and Fig. 7, the symbol identical with Fig. 1 is corresponding with identical part.At first, identical with Fig. 4, (that is, glass substrate SUB1 form TFT on) the back side, the coated with orientation film is to give the liquid crystal aligning control function at the TFT substrate.Data line DL along this TFT substrate is provided with resin partition wall PT.The thickness of partition wall PT is shown emphatically, and relatively it highly is as thin as a wafer, and its reason is identical with embodiment 1.The high situation of aspect ratio cel-gap of partition wall PT illustrates in Fig. 6.This partition wall PT also can adopt the coating of silk screen print method etc. and fully form.Partition wall PT also can be formed at the CF substrate side.
As shown in Figure 7, partition wall PT forms to such an extent that only exceed above-mentioned (H-h) than embodiment 1.After this partition wall PT forms, on each pixel portion of dividing, adopt spraying and applying head IJH coated with liquid crystal by this partition wall.This coating method is identical with embodiment 1.
Equally, according to aforesaid embodiment 2, can access the liquid crystal indicator that a kind of change that suppresses the colourity that causes at the visual angle shows with the high quality image that improves contrast.
[embodiment 3]
Fig. 8 is the planimetric map of explanation according to the major part of the embodiment 3 of liquid crystal indicator of the present invention.In embodiment 1 and embodiment 2 shown in two arrows among Fig. 8, arrange same color pixel (with reference to Fig. 3) at above-below direction (vertical direction), only dispose partition wall between the arrangement of pixel adjacent on the orientation of color pixel at these, but, in embodiment 3, except the partition wall PT-V of this above-below direction, also on left and right directions (horizontal direction), also be provided with partition wall PT-H.In addition, a plurality of pixels to above-below direction are provided with a partition wall PT-H.In the present embodiment, for example, per 20 pixels of above-below direction are provided with one.
With regard to an one example liquid crystal drop among the embodiment 3 is measured down below and described.The size of a sub-pix is taken as 150 μ m * 450 μ m, cel-gap is taken as 2.85 μ m.If the amount of liquid crystal that drips to the zone that a pair of partition wall PT-H by a pair of partition wall PT-V of the above-below direction of dividing 20 pixels and left and right directions surrounds is 3847pl, liquid crystal drop is of a size of 3.85pl, and the number that then drips is 1000.
For liquid crystal is flowed in the long zone that the partition wall PT-V by the liquid crystal of such above-below direction is enclosed with to the enough amount of liquid crystal of each pixel filling, the liquid crystal of surplus in a way need drip.Thus, on the partition wall PT-H of left and right directions, apply unnecessary stress.According to present embodiment, except effect with the various embodiments described above, because reducing the amount of liquid crystal on each zone that partition wall PT-H that left and right directions is set marks off above-mentioned stress is reduced, so have the such characteristics of bad generation that cause because of the partition wall distortion of to prevent.
[embodiment 4]
Fig. 9 is floor map embodiment 4, with Fig. 2 identical of explanation according to liquid crystal indicator of the present invention.In Fig. 9, only show the pixel PX of 8 * 4 arranged in four angles of the substrate of glass substrate SUB1, the top and the bottom of central authorities.In addition, Figure 10 is planimetric map pixel, identical with Fig. 8 that 16 * 4 arranged of the B part of having amplified Fig. 2 is shown.In the zone that surrounds by gate lines G L and data line DL, form 1 sub-pix.In embodiment 1, each line of pixels of red, green, blue is listed among the figure on the above-below direction among this figure shown in two arrows.In other words, be arranged with mutually homochromy color filter row (R), (G), (B) on this two direction of arrow.
In embodiment 4, the outside P PAa up and down of effective viewing area AR and about outside P PAb in configuration do not inject virtual pixel (dummy pixel) PX-D of liquid crystal.Promptly, the zone of virtual pixel PX-D around effective viewing area AR (promptly, the boundary member of PPAa and PPAb) the partition wall PT-H of the left and right directions that the partition wall PT-V with above-mentioned above-below direction reports to the leadship after accomplishing a task also is set, the liquid crystal that drips can not leak into the outside of effective viewing area AR.
According to the present embodiment that has disposed dummy pixel areas PPAa and PPAb, at applying CF substrate, mutual extrusion two substrates and when forming the gap, perhaps when being installed in the electronic installation as finished product, effectively the load born of the partition wall of viewing area alleviates, and can prevent by demonstration faults that problem produced such as the liquid crystal that the dividing wall distortion at the place, end of effective viewing area and damage etc. cause spill.Other effect is identical with the various embodiments described above.
[embodiment 5]
Figure 11 is floor map embodiment 5, with Fig. 9 identical of explanation according to liquid crystal indicator of the present invention.In Figure 11, only show the pixel PX of 8 * 4 arranged in four angles of glass substrate SUB1, the top and the bottom of central authorities.In the present embodiment, the periphery at TFT substrate (that is glass substrate SUB1) is provided with fat frame SFL.This resin frame SFL adopts with the illustrated identical resin material of partition wall of the various embodiments described above and constitutes.In the more lateral of this resin frame SFL, apply not shown encapsulant, and adhere to CF substrate (that is, glass substrate SUB2) (with reference to Fig. 1 etc.), to form the gap.
According to present embodiment, at applying CF substrate, mutual extrusion two substrates and when forming the gap, perhaps when being installed in the electronic installation as finished product, the load that the partition wall of effective viewing area is born alleviates significantly, with embodiment 4 in the same manner, can prevent the demonstration fault of the end of effective viewing area.Other effect is identical with the various embodiments described above.Present embodiment and embodiment 4 can also be made up.
In above each embodiment, although with the transmissive liquid crystal display device is that example describes the present invention, but, also can be equally applicable to reflection-type liquid-crystal display device, semi-transparent semi liquid crystal indicator that pixel electrode adopts aluminium, silver and other high-reflectivity metals.And, the invention is not restricted to TN mode illustrated in the foregoing description, also applicable to the liquid crystal display layer of IPS mode, VA mode.
Preferably, when liquid crystal layer was horizontal alignment, partition wall adopted the resin material that shows vertical orientated property, and when liquid crystal layer was vertical orientated, partition wall adopted the resin material that shows horizontal alignment.This is the liquid crystal aligning cause at random in order to prevent to be caused by partition wall.
As mentioned above, in the present invention, the cel-gap of liquid crystal indicator is on all pixels necessarily, and the Δ n of the liquid crystal of inclosure all is set at desired value by each pixel of red (R), green (G), blue (B).Therefore, between the not homochromy pixel according to adjacency partition wall is set also, each liquid crystal constitutes in mode independently in color pixel.This partition wall also has the function as the interval body that keeps cel-gap.
In addition, because the luminescent spectrum of pixel is according to the transmitted spectrum of the light source that uses, color filter and different widely, so, the definition of center light wavelength can be adopted various definition modes, peak wavelength when for example, having the luminescent spectrum of peak value or the half range centre wavelength when having smoothness properties or the like.Adopting which kind of definition is the design item of liquid crystal indicator, but which kind of definition no matter the present invention adopt all can access effect.
Although in the present invention, particularly regulation not such as used light source kind in the liquid crystal indicator by making up the light source with precipitous luminescent spectrum as the led light source, can improve the transmissivity of liquid crystal layer, can obtain better effect.
Liquid crystal indicator of the present invention can suppress colourity that the visual angle causes to be changed and improves contrast, can by it is installed on television receiver, individual computer monitor, other are civilian, industry shows with carrying out excellent images or video in the electronic equipment.
Claims (10)
1. liquid crystal indicator is characterized in that having:
Be provided with the many pixels that show that look different the 1st substrate,
With above-mentioned substrate mutually opposed to each other the configuration the 2nd substrate and
Be held on the liquid crystal layer between above-mentioned the 1st substrate and above-mentioned the 2nd substrate; And
To the refractive index anisotropy Δ n (λ) of the above-mentioned liquid crystal layer of any wavelength X according to the demonstration look of above-mentioned pixel and difference.
2. liquid crystal indicator is characterized in that having:
Be provided with the many pixels that show that look different the 1st substrate,
With above-mentioned substrate mutually opposed to each other the configuration the 2nd substrate and
Be held on the liquid crystal layer between above-mentioned the 1st substrate and above-mentioned the 2nd substrate; And
By showing that look mutually different a plurality of pixels constitute the unit of display of panchromatic demonstration;
To the refractive index anisotropy Δ n (λ) of the above-mentioned liquid crystal layer of any wavelength X according to the demonstration look of above-mentioned pixel and difference.
3. liquid crystal indicator as claimed in claim 1 is characterized in that,
Has the center light wavelength X for being applicable to
1First liquid crystal layer and being applicable to of first pixel of demonstration look have second liquid crystal layer that other show second pixel of looks,
Above-mentioned first liquid crystal layer to wavelength X
1The refractive index anisotropy be Δ n
1(λ
1), second liquid crystal layer to wavelength X
1The refractive index anisotropy be Δ n
2(λ
1), when the liquid crystal bed thickness is d, satisfy
Sin
2(π d Δ n
1(λ
1)/λ
1)＞sin
2(π d Δ n
2(λ
1)/λ
1) relation.
4. liquid crystal indicator as claimed in claim 2 is characterized in that,
Have and have the above-mentioned different partition wall of dividing between the pixel of look that shows.
5. liquid crystal indicator as claimed in claim 2 is characterized in that:
Be formed with the 1st partition wall of between pixel, dividing, and have the 2nd partition wall of dividing between one or more pixels of identical demonstration look having with above-mentioned different demonstration looks.
6. as claim 4 or 5 described liquid crystal indicators, it is characterized in that,
The height of above-mentioned partition wall is identical with the value of the thickness of above-mentioned liquid crystal layer.
7. as claim 4 or 5 described liquid crystal indicators, it is characterized in that,
The thickness of the above-mentioned liquid crystal layer of aspect ratio of above-mentioned partition wall is big.
8. as claim 4 or 5 described liquid crystal indicators, it is characterized in that,
Above-mentioned partition wall adopts resin to form.
9. the manufacture method of a liquid crystal indicator is characterized in that comprising:
To be formed at the step on the 1st substrate by many pixels that a plurality of pixels that show different demonstration looks respectively constitute;
To have the step that the anisotropic liquid crystal of different refractivity is coated on each respective pixel on above-mentioned the 1st substrate for above-mentioned each different demonstration look; And
On above-mentioned the 1st substrate, mutually dispose the 2nd substrate opposed to each other and encapsulate the step of above-mentioned liquid crystal.
10. the manufacture method of liquid crystal indicator as claimed in claim 9 is characterized in that,
Gunite is adopted in the coating of above-mentioned liquid crystal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007122441 | 2007-05-07 | ||
| JP2007-122441 | 2007-05-07 | ||
| JP2008-003918 | 2008-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101303466A true CN101303466A (en) | 2008-11-12 |
Family
ID=40113445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810125873XA Pending CN101303466A (en) | 2007-05-07 | 2008-02-29 | Liquid crystal display device and method for manufacturing the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2008304892A (en) |
| KR (1) | KR20080099126A (en) |
| CN (1) | CN101303466A (en) |
| TW (1) | TW200907489A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217829A (en) * | 2012-01-18 | 2013-07-24 | 三星显示有限公司 | Display apparatus and method of manufacturing the same |
| CN109946869A (en) * | 2017-11-20 | 2019-06-28 | 乐金显示有限公司 | Liquid crystal disply device and its preparation method including liquid crystal capsule |
| CN110161737A (en) * | 2019-05-13 | 2019-08-23 | 深圳市华星光电技术有限公司 | Display and its manufacturing method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101469038B1 (en) * | 2008-06-12 | 2014-12-04 | 삼성디스플레이 주식회사 | Liquid crystal display |
| TWI402581B (en) * | 2009-03-20 | 2013-07-21 | Chunghwa Picture Tubes Ltd | Liguid crystal display |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW508470B (en) * | 1997-05-09 | 2002-11-01 | Hitachi Ltd | Liquid crystal display device |
| JP3204260B2 (en) * | 1999-04-12 | 2001-09-04 | 松下電器産業株式会社 | Reflective color liquid crystal display |
| JP2002014333A (en) * | 2000-06-30 | 2002-01-18 | Casio Comput Co Ltd | Liquid crystal display element |
| JP2004219706A (en) * | 2003-01-15 | 2004-08-05 | Sharp Corp | Display element and driving voltage detecting method of display element |
| JP3944652B2 (en) * | 2005-04-18 | 2007-07-11 | セイコーエプソン株式会社 | Electro-optical device and electronic apparatus |
-
2008
- 2008-01-11 JP JP2008003918A patent/JP2008304892A/en active Pending
- 2008-02-28 KR KR1020080018498A patent/KR20080099126A/en not_active Application Discontinuation
- 2008-02-29 CN CNA200810125873XA patent/CN101303466A/en active Pending
- 2008-03-19 TW TW097109676A patent/TW200907489A/en unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217829A (en) * | 2012-01-18 | 2013-07-24 | 三星显示有限公司 | Display apparatus and method of manufacturing the same |
| CN103217829B (en) * | 2012-01-18 | 2017-03-01 | 三星显示有限公司 | Display device and its manufacture method |
| CN109946869A (en) * | 2017-11-20 | 2019-06-28 | 乐金显示有限公司 | Liquid crystal disply device and its preparation method including liquid crystal capsule |
| CN109946869B (en) * | 2017-11-20 | 2022-07-01 | 乐金显示有限公司 | Liquid crystal display device including liquid crystal capsule and method of manufacturing the same |
| CN110161737A (en) * | 2019-05-13 | 2019-08-23 | 深圳市华星光电技术有限公司 | Display and its manufacturing method |
| WO2020228248A1 (en) * | 2019-05-13 | 2020-11-19 | 深圳市华星光电技术有限公司 | Display and manufacturing method therefor |
| US11372279B2 (en) | 2019-05-13 | 2022-06-28 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display and method of manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080099126A (en) | 2008-11-12 |
| JP2008304892A (en) | 2008-12-18 |
| TW200907489A (en) | 2009-02-16 |
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Open date: 20081112 |