CN1690814A - Liquid crystal display unit and method for manufacturing the same - Google Patents
Liquid crystal display unit and method for manufacturing the same Download PDFInfo
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- CN1690814A CN1690814A CN 200410027039 CN200410027039A CN1690814A CN 1690814 A CN1690814 A CN 1690814A CN 200410027039 CN200410027039 CN 200410027039 CN 200410027039 A CN200410027039 A CN 200410027039A CN 1690814 A CN1690814 A CN 1690814A
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Abstract
A LCD device comprises first and second basal plates set opposite and liquid crystal layer between them. Set multiple data wires on second basal plate, there is insulation layer on wire upper and multiple public electrodes on top of insulation layer; wherein, public electrodes is bending shape or buckle shape and encircles the wires with second basal plate.
Description
[technical field]
The present invention relates to a kind of Liquid crystal disply device and its preparation method, relate in particular to a kind of plane inner switching type liquid crystal displaying apparatus (In-Plane Switching Liquid Crystal Display, IPS LCD) and manufacture method thereof.
[background technology]
Usually, liquid crystal indicator comprises the substrate of pair of opposing and is positioned at this to the liquid crystal layer between substrate, by drive unit liquid crystal layer is applied voltage, and the orientation of liquid crystal molecule is changed, and utilizes the changes in optical properties of liquid crystal layer to show.
In the prior art active matrix liquid crystal display devices, be respectively equipped with electrode on a pair of substrate of clamping liquid crystal layer, the direction of an electric field that is added on the liquid crystal is roughly vertical with substrate.Typical display mode is the twisted nematic liquid crystal display mode, and the twisted nematic liquid crystal display mode utilizes liquid crystal that the optical activity of light is shown, has the narrow and small defective in visual angle.
For increasing the visual angle, industry proposes a kind of plane inner switching type liquid crystal displaying apparatus, mainly be by public electrode and pixel electrode suitably are set, be located on the same substrate, both produce the electric field with the real estate almost parallel, planar make the liquid crystal rotation, utilize the optical activity of liquid crystal to show.The IPS technology can significantly improve the visual angle of liquid crystal indicator, but because the public electrode and the pixel electrode of this liquid crystal indicator are positioned on the same substrate, relevant wiring also is arranged on the same substrate, and the aperture opening ratio that rolls up meeting reduction liquid crystal indicator of same substrate top electrode and wiring.
For solve IPS liquid crystal indicator aperture opening ratio descend cause the problem of picture deepening, Sharp Corp developed a kind of superelevation aperture opening ratio technology (Ultra High Aperture ratio, UHA).This technology is through the SHA of Sharp (Super High Aperture ratio) technique improvement.The SHA technology is that resin insulating barrier at first is set on data line, on this insulation course, be processed to form thin film transistor (TFT) (Thin Film Transistor then, TFT) wiring, wiring material is generally tantalum, and tantalum resistivity is higher, need guarantee certain live width during wiring, the UHA technology then changes the data line material into aluminium by tantalum.Because the resistivity of aluminium is lower, therefore can under the prerequisite that guarantees certain resistance, reduces wiring width, thereby improve aperture opening ratio.
On May 28th, 2003, disclosed No. 02148009 China's Mainland patented claim disclosed a kind of prior art superelevation aperture opening ratio liquid crystal indicator.As depicted in figs. 1 and 2, this liquid crystal indicator 1 comprises first substrate 16, second substrate 22 and the liquid crystal layer 13 this first substrate 16 and second substrate 22 between relative with first substrate 16.
This first substrate 16 is provided with first polaroid 14, conductive transparent layer 15, fast black base bottom 17, colored filter 18, transparent covering layer 19 and first alignment film 20.Wherein this conductive transparent layer 15 and first polaroid 14 be formed in regular turn on first substrate 16 with liquid crystal layer 13 opposite sides on, fast black base bottom 17 and colored filter 18 are provided with at interval, both all are positioned at first substrate, 16 contiguous liquid crystal layer 13 1 sides, and the transparent covering layer 19 and first alignment film 20 are formed on fast black base bottom 17 and the colored filter 18 in regular turn.
This second substrate 22 is provided with thin film transistor (TFT) 100, pixel electrode 27, public electrode 26, data line 24, sweep trace 28, pixel auxiliary electrode 35, first dielectric film 23, second dielectric film 25, second polaroid 21, second alignment film 31 and public electrode wire 261,262.Wherein this second polaroid 21 is positioned on this second substrate 22 side opposite with liquid crystal layer 13.This first dielectric film 23 is positioned at this second substrate, 22 contiguous liquid crystal layer 13 1 sides, and pixel auxiliary electrode 35 and data line 24 are separated from each other, and all are positioned on first dielectric film 23.Second dielectric film 25 is formed on pixel auxiliary electrode 35 and the data line 24.Public electrode 26 and pixel electrode 27 are provided with at interval and all are positioned on this second dielectric film 25.Second alignment film 31 is positioned on the side of second substrate, the 22 contiguous liquid crystal layers 13 with pixel electrode 27 and public electrode 26.
When data line 24 work, owing to have electric current to flow through in the data line 24, according to Theory of Electromagnetic Field as can be known, form electric field 37 around the data line 24, this electric field 37 can influence near the orientation of the liquid crystal molecule the data line 37, and then influences display effect.
Because being positioned at the public electrode 26 of data line 24 tops is conductors, electric field line 37 through public electrode 26 had shielding action, but because the metal level that this public electrode 26 is a parallel covering, can't coat data line 24 fully, even public electrode 26 complete cover data lines 24, the electric field 37 that produces in the time of still can't shielding these data line 24 energisings fully.But covered section leakage electric field still not, and this leakage electric field can influence near the liquid crystal molecule the public electrode 26, makes its orientation unusual, can't realize Expected Results, cause the bad phenomenon of liquid crystal alignment, thereby cause the display effect of liquid crystal indicator 1 relatively poor.
[summary of the invention]
For overcoming the relatively poor defective of prior art liquid crystal indicator display effect, the invention provides the preferable liquid crystal indicator of a kind of display effect.
For overcoming the relatively poor defective of prior art liquid crystal indicator display effect, the invention provides the manufacture method of the preferable liquid crystal indicator of a kind of display effect.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of liquid crystal indicator is provided, it comprises first substrate and second substrate that is oppositely arranged and is positioned at liquid crystal layer between this first substrate and second substrate, this second substrate is provided with many data lines, this data line top is provided with insulation course, insulation course is provided with a plurality of public electrodes, wherein, the public electrode that is positioned at this data line top is curved shape or bending shape, and surrounds this data line jointly with this second substrate.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of manufacture method of liquid crystal indicator is provided, and it may further comprise the steps: first substrate and second substrate are provided; On second substrate, form first dielectric film; On this first dielectric film, form many data lines; Has formation second insulation course on second substrate of data line; Form a plurality of public electrodes and pixel electrode on this second insulation course, the public electrode that is positioned in these a plurality of public electrodes directly over the data line is curved shape or bending shape, and surrounds this data line jointly with this second substrate; Form an alignment film in regular turn having on second substrate of this public electrode and pixel electrode; This first substrate and this second substrate are oppositely arranged, and liquid crystal is annotated therebetween.
Compared with prior art, in the plane inner switching type liquid crystal displaying apparatus of the present invention, the public electrode that is positioned at this data line top is curved shape or bending shape, and surround this data line jointly with this second substrate, the electric field that produces in the time of can effectively shielding this data line energising, prevent near the orientation of the liquid crystal molecule this electric field influence public electrode, but make the liquid crystal molecule operate as normal, thereby obtain preferable display effect.
Compared with prior art, in the manufacture method of liquid crystal indicator of the present invention, when forming this insulation course, the rate of etch of control diverse location, to form the insulation course of uneven thickness, above data line, form the insulation course of uneven thickness, form the public electrode metal level thereon, this public electrode metal level of selective etch is to form the public electrode of cover data line, the public electrode that is positioned at this data line top is curved shape or bending shape, and surround this data line jointly with this second substrate, the electric field that this structure produces when effectively the shadow data line is switched on, thereby make near the liquid crystal molecule the public electrode can be orientated normally, but the equal operate as normal of all liquid crystal molecules, thus can obtain better display effect.
[description of drawings]
Fig. 1 is a kind of floor map of prior art liquid crystal indicator.
Diagrammatic cross-section when Fig. 2 is liquid crystal indicator shown in Figure 1 work.
Fig. 3 is the diagrammatic cross-section of first embodiment of the invention liquid crystal indicator.
Fig. 4 is the diagrammatic cross-section of second embodiment of the invention liquid crystal indicator.
Fig. 5 is the diagrammatic cross-section of third embodiment of the invention liquid crystal indicator.
[embodiment]
The first embodiment of the invention plane inner switching type liquid crystal displaying apparatus as shown in Figure 3.This liquid crystal indicator 4 comprises first substrate 46, second substrate 52 and the liquid crystal layer 60 this first substrate 46 and second substrate 52 between relative with first substrate 46.
First substrate 46 is provided with first polaroid 44, conductive transparent layer 45, fast black base bottom 47, colored filter 48, protective seam 49 and first alignment film 50.Wherein the conductive transparent layer 45 and first polaroid 44 be formed in regular turn on first substrate 46 with liquid crystal layer 60 opposite sides on; fast black base bottom 47 is provided with at interval with colored filter 48; and all be positioned on the side of first substrate, 46 contiguous liquid crystal layers 60, the protective seam 49 and first alignment film 50 are formed on fast black base bottom 47 and the colored filter 48 in regular turn.
Second substrate 52 is provided with pixel electrode 57, a plurality of public electrode 56, many data lines 54, first dielectric film 53, second dielectric film 55, second polaroid 51 and second alignment films 61.Wherein this second polaroid 51 is positioned on this second substrate 52 and the liquid crystal layer 60 opposite sides.This first dielectric film 53 is positioned on these second substrate, 52 contiguous liquid crystal layer 60 1 sides, and many data lines 54 are arranged on this first dielectric film 53.Second dielectric film 55 is formed on second substrate 52 with data line 54.A plurality of public electrodes 56 and pixel electrode 57 are provided with at interval and all are positioned on this second dielectric film 55.Second alignment film 61 is positioned on second substrate, 52 contiguous liquid crystal layers 60 1 sides with pixel electrode 57 and a plurality of public electrodes 56.This a plurality of public electrode 56 is made by transparent material, is formed on than data line 54 more on the position near liquid crystal layer 60.
Wherein, part is positioned at data line 54 tops in these a plurality of public electrodes 56, and its transversal section is curved, covers corresponding data line 54, is provided with second dielectric film 55 between the two.The public electrode 56 that is positioned at these data line 54 tops is curved shapes, and its transversal section is an arc, this public electrode 56 and these second substrate, 52 common these data lines 54 that surround.Public electrode 56 adopts indium tin oxide usually, and (Indium Tin Oxide ITO) makes.
During liquid crystal indicator 4 work, data line 54 energisings produce an electric field 67, but because in the liquid crystal indicator 4 of the present invention, the public electrode 56 that is positioned at these data line 54 tops is curved shapes, its transversal section is an arc, this public electrode 56 and these second substrate, 52 common these data lines 54 that surround.Compare with the public electrode 26 of the parallel covering of being adopted in the prior art liquid crystal indicator 1, the electric field 67 that produces of shadow data line 54 energising more effectively, but make all liquid crystal molecules all operate as normal and no abnormal orientation, thereby can obtain better display effect.
Seeing also Fig. 4, is the diagrammatic cross-section of second embodiment of the invention liquid crystal indicator.Liquid crystal indicator 4 differences of this liquid crystal indicator 7 and first embodiment are: pixel electrode 77 and data line 74 are arranged on first dielectric film, 73 tops, pixel electrode 77 and data line 74 tops are provided with second insulation course 75, and public electrode 76 is positioned at this second insulation course, 75 tops.
In this liquid crystal indicator 7, because being positioned at the public electrode 76 of these data line 74 tops is curved shapes, its transversal section is an arc, this public electrode 76 surrounds this data line 74 jointly with this second substrate (not indicating), the electric field that produces in the time of can effectively shielding respective data lines 74 energisings, make it not influence near the public electrode 76 liquid crystal molecule, obtain preferable display effect.
Seeing also Fig. 5, is the diagrammatic cross-section of third embodiment of the invention liquid crystal indicator.Liquid crystal indicator 7 differences of this liquid crystal indicator 8 and second embodiment are: in this liquid crystal indicator 8, only be provided with alignment film 81 having on second substrate 92 of public electrode 86, pixel electrode 87 and data line 84 contiguous liquid crystal layer 80 one decks, realize the orientation of liquid crystal molecules with this alignment film 81.
In this liquid crystal indicator 8, because being positioned at the public electrode 86 of these data line 84 tops is curved shapes, and surround this data line 84 jointly with this second substrate (indicate), the electric field that produces in the time of can effectively shielding respective data lines 84 energisings, make it not influence near the public electrode 86 liquid crystal molecule, obtain preferable display effect.
The manufacture method of this liquid crystal indicator 4 mainly may further comprise the steps: first substrate 46 and second substrate 52 are provided; On first substrate 46, form the conductive transparent layer 45 and first polaroid 44 in regular turn with second substrate, 52 opposite sides; Form colored filter 48 and fast black base bottom 47 with second substrate, 52 contiguous sides on first substrate 46, fast black base bottom 47 and colored filter 48 are provided with at interval; Has formation first alignment film 50 on first substrate 46 of colored filter 48; On second substrate 52, form second polaroid 51 with first substrate, 52 opposite sides; Forming first dielectric film 53 on contiguous first substrate 46 on second substrate 52; On first dielectric film 53, form many data lines 54; Has formation one second dielectric film 55 on second substrate 52 of data line 54; Form a plurality of public electrodes 56 on this second dielectric film 55, the public electrode 56 that wherein is positioned at these data line 54 tops is curved shapes, and surrounds these data lines 54 jointly with this second substrate 52; Has formation second alignment film 61 on second substrate 52 of this public electrode 56; This first substrate 46 is oppositely arranged with this second substrate 52, and liquid crystal layer 60 is annotated therebetween.
When forming this second dielectric film 55, the rate of etch of control diverse location, to form second dielectric film 55 of uneven thickness, forming the transversal section above data line 54 is second dielectric film 55 of arc, sputter is to form a thickness even metal layer, this metal level of selective etch is positioned at the public electrode 56 of data line 54 tops with formation, the public electrode 56 that is positioned at these data line 54 tops is curved shapes, and with this second substrate 52 common these data lines 54 that surround, the electric field that this structure produces when effectively shadow data line 54 is switched on, thus make near the liquid crystal the public electrode 56 can be orientated normally.
It is described that liquid crystal indicator of the present invention is not limited to above embodiment, other distortion can also be arranged, also can adopt indium-zinc oxide (Indium Zinc Oxide as public electrode, IZO) or other metal material, the transversal section that is positioned at the public electrode of data line top is not limited to arc, also can adopt the transversal section is U-shaped, V-arrangement or trapezoidal etc. shape are to cover this data line, the public electrode that is positioned at this data line top is curved shape or bending shape, and surround this data line jointly with this second substrate, the electric field that produces during the energising of shadow data line, make it not influence near the liquid crystal molecule of public electrode, obtain preferable display effect.
Claims (10)
1. a liquid crystal indicator comprises first substrate and second substrate that is oppositely arranged and is positioned at liquid crystal layer between this first substrate and second substrate, this second substrate is provided with many data lines, this data line is provided with insulation course, this insulation course is provided with a plurality of public electrodes, it is characterized in that: the public electrode that is positioned at this data line top is curved shape or bending shape, and surrounds this data line jointly with this second substrate.
2. liquid crystal indicator as claimed in claim 1 is characterized in that: the transversal section that is positioned at the public electrode of this data line top is arc, U-shaped, V-arrangement or trapezoidal.
3. liquid crystal indicator as claimed in claim 1 is characterized in that: this public electrode is made by indium tin oxide.
4. liquid crystal indicator as claimed in claim 1 is characterized in that: this public electrode is made by indium-zinc oxide.
5. the manufacture method of a liquid crystal indicator may further comprise the steps: first substrate and second substrate are provided; On second substrate, form first dielectric film; On this first dielectric film, form many data lines; Has formation second insulation course on second substrate of data line; Form a plurality of public electrodes and pixel electrode on this second insulation course, the public electrode that is positioned in these a plurality of public electrodes directly over the data line is curved shape or bending shape, and surrounds this data line jointly with this second substrate; Form an alignment film in regular turn having on second substrate of this public electrode and pixel electrode; This first substrate and this second substrate are oppositely arranged, and liquid crystal is annotated therebetween.
6. the manufacture method of liquid crystal indicator as claimed in claim 5, the transversal section that wherein is positioned at the public electrode of this data line top is arc, U-shaped, V-arrangement or trapezoidal.
7. the manufacture method of liquid crystal indicator as claimed in claim 5, wherein this public electrode adopts sputtering way to be formed on the insulation course.
8. the manufacture method of liquid crystal indicator as claimed in claim 5, wherein this public electrode thickness is even.
9. the manufacture method of liquid crystal indicator as claimed in claim 5, wherein this public electrode is made by indium tin oxide.
10. the manufacture method of liquid crystal indicator as claimed in claim 5, wherein this public electrode is made by indium-zinc oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027039 CN1690814A (en) | 2004-04-22 | 2004-04-22 | Liquid crystal display unit and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027039 CN1690814A (en) | 2004-04-22 | 2004-04-22 | Liquid crystal display unit and method for manufacturing the same |
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| Publication Number | Publication Date |
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| CN1690814A true CN1690814A (en) | 2005-11-02 |
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| CN 200410027039 Pending CN1690814A (en) | 2004-04-22 | 2004-04-22 | Liquid crystal display unit and method for manufacturing the same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155814A (en) * | 2014-08-29 | 2014-11-19 | 昆山龙腾光电有限公司 | Liquid crystal display device and manufacturing method thereof |
| WO2020098062A1 (en) * | 2018-11-12 | 2020-05-22 | 惠科股份有限公司 | Display panel and display device |
| CN111462622A (en) * | 2019-01-21 | 2020-07-28 | 群创光电股份有限公司 | Foldable display device |
-
2004
- 2004-04-22 CN CN 200410027039 patent/CN1690814A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155814A (en) * | 2014-08-29 | 2014-11-19 | 昆山龙腾光电有限公司 | Liquid crystal display device and manufacturing method thereof |
| WO2020098062A1 (en) * | 2018-11-12 | 2020-05-22 | 惠科股份有限公司 | Display panel and display device |
| CN111462622A (en) * | 2019-01-21 | 2020-07-28 | 群创光电股份有限公司 | Foldable display device |
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