CN106526991A - Electrode manufacturing method and liquid crystal display panel - Google Patents
Electrode manufacturing method and liquid crystal display panel Download PDFInfo
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- CN106526991A CN106526991A CN201611110524.1A CN201611110524A CN106526991A CN 106526991 A CN106526991 A CN 106526991A CN 201611110524 A CN201611110524 A CN 201611110524A CN 106526991 A CN106526991 A CN 106526991A
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- electrode
- liquid crystal
- pattern
- graphene layer
- graphene
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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
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
Abstract
The invention provides an electrode manufacturing method and a liquid crystal display panel. The electrode manufacturing method comprises a graphene layer which is formed through graphene materials fully covered with a surface of a substrate basal plate. The graphene layer is divided into an electrode district and a non-electrode district. The graphene layer of the non-electrode district is carried out an insulating treatment so that an electrode pattern of corresponding electrode district and a flat surface of an insulating pattern of corresponding non-electrode district are prepared. When the electrode is applied to the liquid crystal display panel, liquid crystals can be arranged in a regular mode on the surface of the electrode. Due to a topographic relief of electrode surface, a light leak caused by abnormal liquid crystal arrangement can be eliminated, therefore black state brightness of the liquid crystal display panel is reduced and contrast ratio is enhanced. The liquid crystal display panel has the advantages that an electrode surface near the liquid crystal layer is flat; an arrangement of liquid crystal is normal and orderly; the black state is low in brightness and the contrast ratio is high.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of method for making its electrode and display panels.
Background technology
With science and technology development and society progress, people for communication for information and transmission etc. aspect degree of dependence increasingly
Increase.And display device is exchanged as information and the main carriers and material base of transmission, become numerous and be engaged in information light
Electric Research Scientist falls over each other the planes such as the focus seized and highland, liquid crystal display (Liquid Crystal Display, LCD)
Display device because having the advantages that high image quality, power saving, fuselage be thin and applied range, and be widely used in mobile phone, TV,
The various consumption electronic products such as personal digital assistant, digital camera, notebook computer, desk computer, become display device
In main flow.
It is backlight liquid crystal display that liquid crystal indicator on existing market is most of, it include display panels and
Backlight module (backlight module).The operation principle of display panels is put in the middle of the parallel glass substrate of two panels
Liquid crystal molecule is put, and there are are many electrodes vertically and horizontally in the middle of two panels glass substrate, liquid crystal molecule is controlled by whether being powered
Change direction, the light of backlight module is reflected into generation picture.Generally display panels are by color film (Color
Filter, CF) substrate, thin film transistor (TFT) (Thin Film Transistor, TFT) substrate, to be sandwiched in color membrane substrates and thin film brilliant
Liquid crystal (Liquid Crystal, LC) and sealing glue frame (Sealant) composition between body pipe substrate.
At present, the display device of high-contrast is increasingly favored by consumer.The contrast of TFT-LCD display devices
It is to be calculated than black state by state of.If necessary to improve contrast, then need to improve the brightness of on state of or reduce black state
Brightness.In prior art, contrast is lifted by the brightness of raising on state of and there is great limitation：First, improve bright
The method of the brightness of state includes improving aperture opening ratio and the color film penetrance of raising etc., but in the picture of liquid crystal indicator per inch
Under prime number mesh (Pixels Per Inch, PPI) higher and higher trend, improving aperture opening ratio becomes abnormal difficult, and if carries
High coloured silk film penetrance, can lose colour gamut, affect display quality；Secondly, improve the brightness of on state of to improve contrast effect not
It is good.Therefore need to reduce as far as possible the brightness of black state to reach the purpose for more effectively lifting contrast.
The brightness of the black state of liquid crystal indicator is mainly affected by various light leaks, is led including the precision of optical deflecting component degree of polarization
The light leak of cause, layers of material cause light leak to the abnormal arrangement of light leak and liquid crystal caused by the change of nature of light.Such as Fig. 1
It is shown, it is the LCD of existing polymer-stabilized alignment (Polymer Stabilized Alignment, PSA) pattern
The schematic diagram of ideal alignment state of the liquid crystal in black state in plate, liquid crystal 3 is in 2 upper vertical of electrode for patterning in substrate 1
Arrangement, without 3 light leak of liquid crystal, but as shown in Fig. 2 under practical situation, as electrode 2 has the landform of dipping and heaving, can cause
Liquid crystal 3 produces arrangement exception in the region of 2 topography variation of electrode, therefore causes light leak, it is impossible to be effectively reduced LCD
The brightness of the black state of plate, is unfavorable for improving the contrast of display panels.
The content of the invention
It is an object of the invention to provide a kind of method for making its electrode, obtained electrode surface is flat, is applied to liquid crystal
When showing in panel, the light leak caused because electrode hypsography causes liquid crystal abnormal arrangement is effectively reduced, liquid crystal can be reduced
The brightness of the black state of display floater, lifts contrast.
Another object of the present invention is to provide a kind of display panels, black state brightness is low, and contrast is high.
For achieving the above object, present invention firstly provides a kind of method for making its electrode, comprises the steps：
Step 1, one underlay substrate of offer；
Step 2, grapheme material is coated with the underlay substrate, forms graphene layer；
Step 3, the graphene layer is divided into electrode district and be located at the electrode district beyond remaining non-electrode region；
Step 4, the graphene layer to non-electrode region carry out insulation processing, and an electrode is obtained, and the electrode includes correspondence electricity
The insulating pattern of the electrode pattern and correspondence non-electrode region of polar region.
In the step 4, the insulation processing carried out to the graphene layer of non-electrode region is reduction reaction.
In the step 4, the insulation processing carried out to the graphene layer of non-electrode region is hydrogenating reduction.
In the step 4, the insulation processing carried out to the graphene layer of non-electrode region is oxidation reaction.
In the step 4, the insulation processing carried out to the graphene layer of non-electrode region is to be aoxidized using ozone.
The present invention also provides a kind of display panels, including the upper substrate being oppositely arranged with infrabasal plate and located at described
Liquid crystal layer between upper substrate and infrabasal plate；
The infrabasal plate include underlay substrate and located at the underlay substrate near liquid crystal layer side surface it is flat
One electrode；
The first electrode includes electrode pattern and the insulating pattern positioned at remaining area beyond electrode pattern；
The material of the electrode pattern is Graphene, and the insulating pattern formed by carrying out insulation processing to Graphene.
The material of the insulating pattern is graphite alkane, and the insulation processing is hydrogenating reduction.
The material of the insulating pattern is graphene oxide, and the insulation processing is to be aoxidized using ozone.
The electrode pattern includes the branch electrodes of two main electrodes for intersecting vertically and multiple strips, two trunk
Electrode is crossed to form four viewing areas, and multiple branch electrodes are parallel and are arranged at intervals in four viewing areas, described
Multiple branch electrodes form a rectangular configuration, and two main electrode respectively along length and the wide setting of rectangle.
The second electrode and protection set gradually between the underlay substrate and first electrode from bottom to up is included in also
Layer；
The electrode pattern includes parallel and spaced multiple strip electrodes and located at the plurality of strip electrode two
The connecting portion at end.
Beneficial effects of the present invention：A kind of method for making its electrode that the present invention is provided, is coated with whole face on underlay substrate
Grapheme material forms graphene layer, and graphene layer is divided into electrode district and non-electrode region, and the Graphene to non-electrode region
Layer carries out insulation processing, and the surface that the insulating pattern for including the electrode pattern in counter electrode area and correspondence non-electrode region is obtained is put down
Smooth electrode, when the application of electrode is in display panels, liquid crystal can be eliminated in the normal orderly arrangement of the electrode surface
Because electrode surface hypsography causes the light leak caused liquid crystal arrangement is abnormal, so as to the black state for reducing display panels is bright
Degree, and then lift contrast.A kind of display panels that the present invention is provided, the electrode surface near liquid crystal layer are flat, liquid crystal
Arrangement is normal, and black state brightness is low in order, and contrast is high.
Description of the drawings
In order to be able to be further understood that the feature and technology contents of the present invention, refer to below in connection with the detailed of the present invention
Illustrate and accompanying drawing, but accompanying drawing only provides with reference to and illustrates to use, not for being any limitation as to the present invention.
In accompanying drawing,
Fig. 1 be existing PSA patterns display panels in ideal alignment state of the liquid crystal in black state schematic diagram；
Fig. 2 be existing PSA patterns display panels in actual arrangement state of the liquid crystal in black state schematic diagram；
Fig. 3 is the flow chart of the method for making its electrode of the present invention；
The schematic diagram of the step of Fig. 4 is the method for making its electrode of the present invention 2；
The schematic diagram of the step of Fig. 5 is the method for making its electrode of the present invention 4；
Fig. 6 is the structural representation of the first embodiment of the display panels of the present invention；
Fig. 7 is the schematic top plan view figure of the first electrode of the first embodiment of the display panels of the present invention；
Fig. 8 is the structural representation of the second embodiment of the display panels of the present invention；
Fig. 9 is the schematic top plan view of the first electrode of the second embodiment of the display panels of the present invention.
Specific embodiment
Further to illustrate the technological means taken of the invention and its effect, below in conjunction with being preferable to carry out for the present invention
Example and its accompanying drawing are described in detail.
Fig. 3 is referred to, present invention firstly provides a kind of method for making its electrode, comprises the steps：
Step 1, one underlay substrate 21 of offer.
Specifically, the underlay substrate 21 can be TFT substrate.
Step 2, Fig. 4 is referred to, grapheme material is coated with the underlay substrate 21, form graphene layer 22 '.
Step 3, the graphene layer 22 ' is divided into electrode district 221 ', and is located at remaining beyond the electrode district 221 '
Non-electrode region 222 '.
Step 4, Fig. 5 is referred to, insulation processing is carried out to the graphene layer 22 ' of non-electrode region 222 ', an electrode, institute is obtained
State electrode include counter electrode area 221 ' electrode pattern 221, and correspondence non-electrode region 222 ' insulating pattern 222.
Alternatively, in the step 4, the insulation processing carried out to the graphene layer 22 ' of non-electrode region 222 ' is anti-for reduction
Should, the Graphene in the graphene layer 22 ' of the non-electrode region 222 ' Jing after reduction reaction is reduced to graphite alkane, with insulation
Property, and be still Graphene without the graphene layer 22 ' of the electrode district 221 ' of reduction reaction, with electric conductivity, therefore electrode district
221 ' graphene layer 22 ' forms electrode pattern 221, and the graphene layer 22 ' being reduced of non-electrode region 222 ' forms insulation figure
Case 222, so as to electrode is obtained.Preferably, in the step 4, the insulation position carried out by the graphene layer 22 ' of non-electrode region 222 '
Manage as hydrogenating reduction.
Alternatively, in the step 4, the insulation processing carried out to the graphene layer 22 ' of non-electrode region 222 ' is anti-for oxidation
Should, the Graphene in the graphene layer 22 ' of oxidized reacted non-electrode region 222 ' is oxidized to graphene oxide, with exhausted
Edge, and the graphene layer 22 ' of the electrode district 221 ' of not oxidised reaction is still Graphene, with electric conductivity, therefore electrode district
221 ' graphene layer 22 ' forms electrode pattern 221, and the oxidized graphene layer 22 ' of non-electrode region 222 ' forms insulation figure
Case 222, so as to electrode is obtained.Preferably, in the step 4, the insulation position carried out by the graphene layer 22 ' of non-electrode region 222 '
Reason is to be aoxidized using ozone.
The method for making its electrode of the present invention, as the grapheme material that whole face is coated with underlay substrate 21 forms Graphene
Graphene layer 22 ' is divided into electrode district 221 ' and non-electrode region 222 ', and the graphene layer to non-electrode region 222 ' by layer 22 '
22 ' carry out insulation processing, and being obtained includes electrode pattern 221, and the correspondingly insulation of non-electrode region 222 ' in counter electrode area 221 '
The electrode of pattern 222, eliminates the groove structure in conventional electrode configurations, makes obtained electrode surface flat, obtained electrode
When being applied in display panels, liquid crystal can be eliminated because of electrode surface ground in the normal orderly arrangement of the electrode surface
The light leak that shape fluctuating causes liquid crystal arrangement abnormal and causes, so as to reduce the black state brightness of display panels, and then lifting is right
Degree of ratio.
Based on above-mentioned method for making its electrode, the present invention also provides a kind of display panels, refers to Fig. 6, is the present invention
Display panels first embodiment, the display panels for PSA patterns display panels, including what is be oppositely arranged
Upper substrate 10 and infrabasal plate 20, and the liquid crystal layer 30 between the upper substrate 10 and infrabasal plate 20；The infrabasal plate 20 is wrapped
Include underlay substrate 21, and located at the underlay substrate 21 near the flat first electrode 22 in the surface of 30 side of liquid crystal layer；It is described
First electrode 22 includes electrode pattern 221, and positioned at the insulating pattern 222 of remaining area beyond electrode pattern 221；The electrode
The material of pattern 221 is Graphene, and the insulating pattern 222 formed by carrying out insulation processing to Graphene.Specifically, it is described
Underlay substrate 21 can be TFT substrate.
Alternatively, the material of the insulating pattern 222 be graphite alkane, the insulation processing be reduction reaction, preferably plus
Hydrogen reduction.
Alternatively, the material of the insulating pattern 222 is graphene oxide, and the insulation processing is oxidation reaction, preferably
It is to be aoxidized using ozone.
The display panels of the present invention, electrode pattern of its infrabasal plate 20 near the first electrode 22 of 30 side of liquid crystal layer
221 are made using Graphene, and insulating pattern 222 is obtained by insulation processing is carried out to Graphene, therefore the first electrode 22 can
Insulation processing is carried out to form insulating pattern 222 by the part of the grapheme material to whole face, while in not carrying out insulation position
The part of reason is remaining region formation electrode pattern 221 beyond insulating pattern 222, makes the surface of the first electrode 22 flat,
Liquid crystal 31 in liquid crystal layer 30 can be eliminated and rise because of electrode surface landform in the normal orderly arrangement in the surface of first electrode 22
Volt causes the light leak that liquid crystal 31 arranges exception and causes, and so as to reduce the black state brightness of display panels, and then lifts contrast
Degree.
Specifically, Fig. 7 is referred to, in the first embodiment of the present invention, the electrode pattern 221 includes what is intersected vertically
Two main electrodes 2211, and multiple strips branch electrodes 2212, two main electrode 2211 is crossed to form four viewing areas
Domain, multiple branch electrodes 2212 are parallel and are arranged at intervals in four viewing areas, 2212 shape of the plurality of branch electrodes
Into a rectangular configuration, and two main electrode 2211 is respectively along length and the wide setting of rectangle.
Fig. 8 is referred to, is the display panels second embodiment of the present invention, the display panels of the present invention can be with
For the display panels of fringe field switching (Fringe Filed Switching, FFS) pattern, its area with first embodiment
It is not that the display panels are also included between the underlay substrate 21 and first electrode 22 and set gradually from bottom to up
Second electrode 23, and protective layer 24；The electrode pattern 221 include parallel and spaced multiple strip electrodes 2211 ',
And located at the connecting portion 2212 ' at 2211 ' two ends of the plurality of strip electrode.Further, the second electrode 23 may also be employed
Above-mentioned method for making its electrode makes, and lifts the surface flatness of second electrode 23.
In sum, method for making its electrode of the invention, the grapheme material that whole face is coated with underlay substrate form stone
Graphene layer is divided into electrode district and non-electrode region, and the graphene layer to non-electrode region carries out insulation processing by black alkene layer, system
The flat electrode in the surface of the insulating pattern of the electrode pattern and correspondence non-electrode region in counter electrode area must be included, the electrode should
During in display panels, liquid crystal can be eliminated because of electrode surface landform in the normal orderly arrangement of the electrode surface
The light leak that fluctuating causes liquid crystal arrangement abnormal and causes, so as to reduce the black state brightness of display panels, and then lifts contrast
Degree.The display panels of the present invention, the electrode surface near liquid crystal layer are flat, and normally in order, black state brightness is low for liquid crystal arrangement,
Contrast is high.
The above, for the person of ordinary skill of the art, can be with technology according to the present invention scheme and technology
Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to appended right of the invention
The protection domain of requirement.
Claims (10)
1. a kind of method for making its electrode, it is characterised in that comprise the steps：
Step 1, one underlay substrate of offer (21)；
Step 2, grapheme material is coated with the underlay substrate (21), forms graphene layer (22 ')；
Step 3, the graphene layer (22 ') is divided into electrode district (221 '), and is located at surplus beyond the electrode district (221 ')
Remaining non-electrode region (222 ')；
Step 4, the graphene layer (22 ') to non-electrode region (222 ') carry out insulation processing, and an electrode is obtained, and the electrode includes
The electrode pattern (221) in counter electrode area (221 '), and correspondence non-electrode region (222 ') insulating pattern (222).
2. method for making its electrode as claimed in claim 1, it is characterised in that in the step 4, to non-electrode region (222 ')
The insulation processing that graphene layer (22 ') is carried out is reduction reaction.
3. method for making its electrode as claimed in claim 2, it is characterised in that in the step 4, to non-electrode region (222 ')
The insulation processing that graphene layer (22 ') is carried out is hydrogenating reduction.
4. method for making its electrode as claimed in claim 1, it is characterised in that in the step 4, to non-electrode region (222 ')
The insulation processing that graphene layer (22 ') is carried out is oxidation reaction.
5. method for making its electrode as claimed in claim 4, it is characterised in that in the step 4, to non-electrode region (222 ')
The insulation processing that graphene layer (22 ') is carried out is to be aoxidized using ozone.
6. a kind of display panels, it is characterised in that including the upper substrate (10) being oppositely arranged and infrabasal plate (20), and be located at
Liquid crystal layer (30) between the upper substrate (10) and infrabasal plate (20)；
The infrabasal plate (20) including underlay substrate (21), and located at the underlay substrate (21) near liquid crystal layer (30) side
The flat first electrode in surface (22)；
The first electrode (22) including electrode pattern (221), and be located at electrode pattern (221) beyond remaining area insulation figure
Case (222)；
The material of the electrode pattern (221) is Graphene, and the insulating pattern (222) is by carrying out insulation processing to Graphene
Formed.
7. display panels as claimed in claim 6, it is characterised in that the material of the insulating pattern (222) is graphite
Alkane, the insulation processing are hydrogenating reduction.
8. display panels as claimed in claim 6, it is characterised in that the material of the insulating pattern (222) is oxidation
Graphene, the insulation processing are to be aoxidized using ozone.
9. display panels as claimed in claim 6, it is characterised in that the electrode pattern (221) is including intersecting vertically
Two main electrodes (2211), and multiple strips branch electrodes (2212), two main electrode (2211) is crossed to form four
Individual viewing area, multiple branch electrodes (2212) are parallel and are arranged at intervals in four viewing areas, the plurality of branch
Electrode (2212) forms a rectangular configuration, and two main electrode (2211) respectively along length and the wide setting of rectangle.
10. display panels as claimed in claim 6, it is characterised in that be also included in the underlay substrate (21) and
The second electrode (23) that set gradually between one electrode (22) from bottom to up, and protective layer (24)；
The electrode pattern (221) including parallel and spaced multiple strip electrodes (2211 '), and be located at the plurality of bar
The connecting portion (2212 ') at shape electrode (2211 ') two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110524.1A CN106526991A (en) | 2016-12-02 | 2016-12-02 | Electrode manufacturing method and liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110524.1A CN106526991A (en) | 2016-12-02 | 2016-12-02 | Electrode manufacturing method and liquid crystal display panel |
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| Publication Number | Publication Date |
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| CN106526991A true CN106526991A (en) | 2017-03-22 |
Family
ID=58341443
Family Applications (1)
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| CN201611110524.1A Pending CN106526991A (en) | 2016-12-02 | 2016-12-02 | Electrode manufacturing method and liquid crystal display panel |
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Application publication date: 20170322 |