CN105717712A - Blue phase liquid crystal display panel and manufacturing method thereof - Google Patents
Blue phase liquid crystal display panel and manufacturing method thereof Download PDFInfo
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- CN105717712A CN105717712A CN201410729278.2A CN201410729278A CN105717712A CN 105717712 A CN105717712 A CN 105717712A CN 201410729278 A CN201410729278 A CN 201410729278A CN 105717712 A CN105717712 A CN 105717712A
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Abstract
The invention discloses a blue phase liquid crystal display panel and a manufacturing method thereof. The blue phase liquid crystal display panel comprises a lower substrate, an upper substrate, data lines, gate lines, a shielding layer and a top electrode layer, wherein the data lines and the gate lines are arranged on the lower substrate in a stagger manner, and perpendicular to each other; furthermore, a plurality of pixel zones are defined by the data lines and the gate lines; each pixel zone comprises a common electrode and a pixel electrode; the common electrodes and the pixel electrodes are arranged on the lower substrate in a stagger manner and play interaction to generate a first electric field; the shielding layer is arranged on the upper substrate and overlapped with the data lines and the gate lines in the vertical projection direction; the top electrode layer is arranged on the shielding layer and plays interaction with the pixel electrodes to generate a second electric field. With adoption of the blue phase liquid crystal display panel disclosed by the invention, the pixel voltage for driving the blue phase liquid crystal can be reduced, so that the purpose of reducing energy consumption can be achieved.
Description
Technical field
The present invention relates to a kind of display panels, and particularly to a kind of blue-phase liquid crystal display panel and manufacture method thereof.
Background technology
Blue phase liquid crystal (blue-phaseliquidcrystal；BPLC) being applied on two-d display panel, two-d display panel can be made at least to have, and the response time is short, do not need to join mutually and the advantage such as wide viewing angle.But, if blue phase liquid crystal being applied in transverse electric field effect (in-planeswitching；IPS) in display panels, due to from pixel electrode more away from electric field can be more weak factor, it is necessary to relatively the pixel voltage of high levle strengthens electric field and drives in blue phase liquid crystal layer the blue phase liquid crystal away from pixel electrode, to reach the target penetration rate of pixel.From the foregoing, be applied in by blue phase liquid crystal in transverse electric field effect display panels, have the problem that power consumption is too high.How to solve the problems referred to above, one of target endeavoured for those skilled in the art.
Summary of the invention
It is an object of the invention to provide a kind of blue-phase liquid crystal display panel, it is characterized in that and arranges upper electrode layer on shielding layer, set upper electrode layer can produce electric field with the pixel electrode reciprocal action of pixel region, and this electric field can superpose with pixel electrode on infrabasal plate plate and electric field produced by public electrode reciprocal action.Therefore, the blue-phase liquid crystal display panel of the present invention can provide strong electric under the pixel voltage that offer is identical, makes the blue phase liquid crystal molecule being located close to upper substrate produce to be subject to enough electric field intensity and produces reaction.Use the blue-phase liquid crystal display panel of the present invention, it is possible to decrease drive the pixel voltage needed for blue phase liquid crystal, and then reach the purpose that power consumption reduces.
Above-mentioned purpose according to the present invention, it is proposed to a kind of blue-phase liquid crystal display panel, this display panels includes infrabasal plate, upper substrate, multiple data wire, multiple gate line, shielding layer and upper electrode layer.Upper substrate and the opposing parallel setting of this infrabasal plate.The plurality of data wire and the plurality of gate line are crisscross arranged on infrabasal plate.The plurality of data wire and the plurality of gate line are arranged in a mutually vertical manner, and the plurality of data wire and the plurality of gate line define multiple pixel region.Pixel region comprises public electrode and pixel electrode.Public electrode and pixel electrode are disposed alternately on infrabasal plate and reciprocal action is to produce the first electric field.Shielding layer is arranged on upper substrate.Shielding layer setting corresponding with the plurality of data wire of infrabasal plate and the plurality of gate line, and shielding layer is overlapping with the plurality of data wire and the plurality of gate line on upright projection direction.Upper electrode layer is arranged on shielding layer, and with the pixel electrode reciprocal action of the plurality of pixel region to produce the second electric field.
According to one embodiment of the invention, above-mentioned upper electrode layer is covered by above-mentioned shielding layer on upright projection direction.
According to another embodiment of the present invention, above-mentioned upper electrode layer is overlapping with the plurality of data wire or the plurality of gate line on upright projection direction.
According to another embodiment of the present invention, above-mentioned upper electrode layer includes light transmitting electro-conductive material.
According to another embodiment of the present invention, above-mentioned upper electrode layer is metal conducting layer.
According to another embodiment of the present invention, above-mentioned blue-phase liquid crystal display panel also includes multiple common wire, and the plurality of common wire is electrically connected the public electrode of the plurality of pixel region.
According to another embodiment of the present invention, above-mentioned blue-phase liquid crystal display panel also includes blue phase liquid crystal layer, is arranged between upper substrate and infrabasal plate.
Above-mentioned purpose according to the present invention, the another manufacture method proposing a kind of blue-phase liquid crystal display panel, comprise the following steps: to provide infrabasal plate, wherein there are the multiple data wires and multiple gate line that are crisscross arranged on infrabasal plate, the plurality of data wire and the plurality of gate line are arranged in a mutually vertical manner, and the plurality of data wire and the plurality of gate line define multiple pixel region, wherein pixel region has public electrode and pixel electrode, public electrode and pixel electrode are positioned on infrabasal plate, pixel electrode and public electrode are arranged alternately, and pixel electrode and public electrode reciprocal action are to produce the first electric field；Upper substrate is provided；Upper substrate is formed shielding layer；Shielding layer is formed upper electrode layer；And between upper substrate and infrabasal plate, form blue phase liquid crystal layer.Wherein, shielding layer setting corresponding with the plurality of data wire of infrabasal plate and the plurality of gate line, and shielding layer is overlapping with the plurality of data wire and the plurality of gate line on upright projection direction, and the pixel electrode reciprocal action of upper electrode layer and the plurality of pixel region is to produce the second electric field.
According to one embodiment of the invention, above-mentioned upper electrode layer is covered by above-mentioned shielding layer on upright projection direction.
According to another embodiment of the present invention, above-mentioned upper electrode layer is overlapping with the plurality of data wire or the plurality of gate line on upright projection direction.
Accompanying drawing explanation
For the above and other purpose of the present invention, feature, advantage and embodiment can be become apparent, accompanying drawing illustrates as follows:
Figure 1A and 1B is based on generalized section and the top view of one embodiment of the invention blue-phase liquid crystal display panel respectively；
Fig. 2 is the driving voltage schematic diagram with the ratio of penetrance of embodiment of the present invention blue-phase liquid crystal display panel and existing blue-phase liquid crystal display panel；And
Fig. 3 is based on one embodiment of the invention and forms the schematic flow sheet of blue-phase liquid crystal display panel.
Detailed description of the invention
Hereinafter hash out embodiments of the invention.It is understood, however, that embodiment provides many applicable inventive concepts, it may be implemented in certain content miscellaneous.Discussed specific embodiment is intended for illustrating, is not limited to the scope of the present invention.
Refer to Figure 1A, Figure 1A and be based on the generalized section of one embodiment of the invention blue-phase liquid crystal display panel 100.Blue-phase liquid crystal display panel 100 can include multiple pixel region, and is for one of them pixel region in figure ia.Blue-phase liquid crystal display panel 100 includes infrabasal plate 110, upper substrate 120 and blue phase liquid crystal layer 130.Upper substrate 120 and the opposing parallel setting of infrabasal plate 110, and upper substrate 120 can be glass substrate, plastic substrate or other similar substrates etc. with infrabasal plate 110.Blue phase liquid crystal layer 130 includes multiple blue phase liquid crystal molecule L C, blue phase liquid crystal molecule L C can be subject to the effect of extra electric field and bring out its birefringent characteristic, arrange in pairs or groups the level adjustment of pixel voltage VP in each pixel region simultaneously, make blue-phase liquid crystal display panel 100 can show the pixel of various GTG.
Please with reference to the top view that Figure 1B, Figure 1B are blue-phase liquid crystal display panels 100.Including multiple data wire DL of being crisscross arranged and multiple gate lines G L on infrabasal plate 110, it is respectively in order to provide pixel voltage VP and grid voltage VG.Data wire DL and gate lines G L is mutually perpendicular to, and adjacent data wire DL and adjacent gate lines G L common definition go out pixel region.For the convenient technology contents that the present invention is described, illustrate only two adjacent data wire DL and two adjacent gate lines G L in fig. ib.Additionally, also include common wire CL on infrabasal plate 110, in order to provide common electric voltage VCOM.In fig. ib, common wire CL is arranged on the top of gate lines G L and and gate lines G L overlap.There is insulating barrier (not shown) between common wire CL and gate lines G L, to prevent common wire CL and gate lines G L to be electrically connected.In certain embodiments, common wire CL can be overlapping at the upper section of gate lines G L or not overlapping.Additionally, in certain embodiments, common wire CL is vertical with gate lines G L.For the convenient technical characteristic that the present invention is described, Figure 1A omits the data wire DL in insulating barrier and Figure 1B.
Each pixel region includes transistor T and the pixel electrode 112 being arranged alternately and public electrode 114.Transistor T is electrically connected data wire DL and gate lines G L, and controlling its on off state via the signal of gate lines G L input is on and off, to control the pixel voltage VP of data wire DL is fed into pixel electrode 112.Public electrode 114 extends from common wire CL, makes common wire CL that common electric voltage VCOM is fed into public electrode 114.Consequently, it is possible to according to the voltage quasi position difference of pixel voltage VP and common electric voltage VCOM, pixel electrode 112 and public electrode 114 reciprocal action can be made to produce electric field, blue phase liquid crystal molecule L C is made to be subject to electric field impact and produce birefringent characteristic.Pixel electrode 112 and public electrode 114 reciprocal action produce the situation of electric field also referred to as transverse electric field effect.Produced electric field intensity can be changed by the level of adjustment pixel voltage VP.Additionally, common wire CL also can as public electrode 114 interactive with pixel electrode 112.
In blue-phase liquid crystal display panel 100, the material of pixel electrode 112, public electrode 114 and common wire CL can include such as indium tin oxide (IndiumTinOxide；Or indium-zinc oxide (IndiumZincOxide ITO)；The transparent conductive material such as IZO), penetrates for by the backlight of infrabasal plate 110 external incident to blue-phase liquid crystal display panel 100.Additionally, the material of data wire DL and gate lines G L can include metallic element or other analogous elements such as chromium, tungsten, tantalum, titanium, molybdenum, aluminum, copper or alloy or compound etc. that the combination in any including above-mentioned metallic element is formed, but it is not limited to this.
Upper substrate 120 includes shielding layer 122 and upper electrode layer 124.Shielding layer 122 has branch arranged vertically alternately, a part of parallel gate polar curve GL of these branches, and another part vertical gate polar curve GL, and these branches arranged vertically alternately form matrix pattern.On the D of upright projection direction, shielding layer 122 is overlapping with data wire DL and gate lines G L, to avoid the light reflected by data wire DL and gate lines G L by injection after upper substrate 120.Shielding layer 122 material can include chromium, chromium oxide, black resin or other light-proof materials.Additionally, shielding layer 122 can be single or multiple lift structure.Upper electrode layer 124 is arranged on shielding layer 122, it is in order to receive common electric voltage VCOM, and the voltage quasi position difference according to pixel voltage VP and common electric voltage VCOM, upper electrode layer 124 with pixel electrode 112 reciprocal action to produce electric field, can make blue phase liquid crystal molecule L C be subject to electric field impact and produce birefringent characteristic.In certain embodiments, upper electrode layer 124 is covered by shielding layer 122 on the D of upright projection direction.In certain embodiments, upper electrode layer 124 can be provided only in shielding layer 122 branch of panel data line DL or in the branch of parallel gate polar curve GL, namely upper electrode layer 124 is overlapping with data wire DL or gate lines G L on the D of upright projection direction.In certain embodiments, upper electrode layer 124 can be metal conducting layer, and its material can include metallic element or other analogous elements such as chromium, tungsten, tantalum, titanium, molybdenum, aluminum, copper or alloy or compound etc. that the combination in any including above-mentioned metallic element is formed.Additionally, in certain embodiments, upper electrode layer 124 can include the such as transparent conductive material such as indium tin oxide or indium-zinc oxide.
Upper substrate 120 may also include multiple chromatic filter layer (not shown), a pixel region in each chromatic filter layer each corresponding multiple pixel region, make each pixel display correspondence color according to corresponding colored green glow layer.The technology that chromatic filter layer is well known to those skilled in the art, therefore in this not elaborate.
Being characterized in that of blue-phase liquid crystal display panel of the present invention, being arranged on the upper electrode layer on shielding layer can with the pixel electrode reciprocal action of pixel region to produce electric field.Under identical pixel voltage, the blue-phase liquid crystal display panel of the present invention can increase the electric field intensity between infrabasal plate and upper substrate near upper substrate.Pass through above-described embodiment, it is possible to decrease for driving in blue phase liquid crystal layer the level of pixel voltage needed for the blue phase liquid crystal molecule of upper substrate, and then reduce power consumption.
Refer to the pixel voltage schematic diagram with the ratio of penetrance that Fig. 2, Fig. 2 are embodiment of the present invention blue-phase liquid crystal display panel 100 and prior art transverse electric field effect blue-phase liquid crystal display panel.As shown in Figure 2, using the blue-phase liquid crystal display panel of the present invention, when penetrance is maximum (namely 100%), corresponding pixel voltage is approximately 23 volts (V).In comparison, using existing transverse electric field effect blue-phase liquid crystal display panel, when penetrance is maximum, corresponding pixel voltage is approximately 25 volts.From the foregoing, compared to existing transverse electric field effect blue-phase liquid crystal display panel, the blue phase liquid crystal molecule in the pixel voltage drive blue phase liquid crystal layer that the blue-phase liquid crystal display panel of the present invention can be relatively low adjusts the penetrance of blue-phase liquid crystal display panel.
Refer to Fig. 3, Fig. 3 and be based on the flow chart that one embodiment of the invention forms the method 300 of blue-phase liquid crystal display panel.Method 300 comprises the steps of.First, step 302 is carried out, it is provided that there is the infrabasal plate of multiple data wires and the multiple gate line being crisscross arranged.Infrabasal plate can be glass substrate, plastic substrate or other similar substrates etc..The plurality of data wire and the plurality of gate line are mutually perpendicular to, and adjacent data wire and adjacent gate line common definition go out pixel region.Each pixel region has the pixel electrode being arranged alternately and public electrode, pixel electrode and public electrode be similarly positioned on infrabasal plate, and pixel electrode and public electrode are used for reciprocal action to produce electric field.Additionally, each pixel region also includes transistor, being for electrically connecting to data wire and gate line, controlling its on off state via the signal of gate line input is on and off, to control the pixel voltage of data wire is fed into pixel electrode.
The material that formation pixel electrode, public electrode and common wire use can include the such as transparent conductive material such as indium tin oxide or indium-zinc oxide.Additionally, form the material that data wire and gate line use can include metallic element or other analogous elements such as chromium, tungsten, tantalum, titanium, molybdenum, aluminum, copper, or the alloy that formed of the combination in any including above-mentioned metallic element or compound etc., but it is not limited to this.Can passing through to carry out the deposition step of correspondence and patterning step to form data wire, gate line, pixel electrode, public electrode, common wire and transistor, these corresponding steps are well known to those skilled in the art, therefore are not repeated herein.
Then, carry out step 304, it is provided that upper substrate, make upper substrate relative with infrabasal plate and set.Identical with infrabasal plate, upper substrate can be glass substrate, plastic substrate or other similar substrates etc..
Then, carry out step 306, upper substrate is formed shielding layer.The material of shielding layer can include chromium, chromium oxide, black resin or other light-proof materials.The step forming shielding layer is as follows.First being coated with or spatter on upper substrate and cross light-proof material, then again through technical processs such as upper photoresistance, development, etching and removing photoresistances, so that light-proof material is graphical, this patterned light-proof material is shielding layer.
Then, carry out step 308, shielding layer is formed upper electrode layer.Upper electrode layer can be metal conducting layer, and its material can include metallic element or other analogous elements such as chromium, tungsten, tantalum, titanium, molybdenum, aluminum, copper or alloy or compound etc. that the combination in any including above-mentioned metallic element is formed.Additionally, in certain embodiments, upper electrode layer can include the such as transparent conductive material such as indium tin oxide or indium-zinc oxide.The step forming upper electrode layer is as follows.First evaporation or spatter and cross conductive material on shielding layer and upper substrate, then again through technical processs such as upper photoresistance, development, etching and removing photoresistances, removes the not conductive material on shielding layer, and is retained in conductive material on shielding layer using as upper electrode layer.In certain embodiments, upper electrode layer is covered by shielding layer on upright projection direction.In certain embodiments, upper electrode layer can only be formed in shielding layer the branch of parallel gate polar curve or in the branch of vertical gate polar curve.
Formed after upper electrode layer, then by infrabasal plate and upper substrate to group, make shielding layer have the side of data wire and gate line towards infrabasal plate, and shielding layer is overlapping with data wire and gate line on upright projection direction.Infrabasal plate and upper substrate are to after group, and upper electrode layer may be used to the pixel electrode reciprocal action with pixel region to produce electric field.
Finally, carry out step 310, between upper substrate and infrabasal plate, form the blue phase liquid crystal layer including multiple blue phase liquid crystal molecule.Blue phase liquid crystal layer can pass through vacuum impregnation or the formula injection method (onedropfill that drips；ODF) formed.
By the blue-phase liquid crystal display panel that said method is formed, strong electric can be provided under identical pixel voltage is provided, make the blue phase liquid crystal molecule being located close to upper substrate produce to be subject to enough electric field intensity and produce reaction.Therefore, the blue-phase liquid crystal display panel formed by the method that the invention discloses, it is possible to decrease drive the pixel voltage needed for blue phase liquid crystal, to reach energy-conservation purpose.
Although the present invention is with embodiment openly as above; so it is not limited to the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing various variation and retouching, therefore protection scope of the present invention ought be as the criterion depending on the scope that claims define.
Claims (10)
1. a blue-phase liquid crystal display panel, it is characterised in that described blue-phase liquid crystal display panel includes:
Infrabasal plate；
Upper substrate, described upper substrate and the opposing parallel setting of described infrabasal plate；
Multiple data wires and multiple gate line, it is crisscross arranged on described infrabasal plate, the plurality of data wire and the plurality of gate line are arranged in a mutually vertical manner, and the plurality of data wire and the plurality of gate line define multiple pixel region, wherein said pixel region comprises: at least one public electrode, and it is arranged on described infrabasal plate；And at least one pixel electrode, it is arranged on described infrabasal plate, and described pixel electrode and described public electrode are arranged alternately, and described pixel electrode and described public electrode reciprocal action are to produce the first electric field；
Shielding layer, it is arranged on described upper substrate, the setting corresponding with the plurality of data wire of described infrabasal plate and the plurality of gate line of described shielding layer, and described shielding layer is overlapping with the plurality of data wire and the plurality of gate line on upright projection direction；And
Upper electrode layer, it is arranged on described shielding layer, and the pixel electrode reciprocal action of described upper electrode layer and the plurality of pixel region is to produce the second electric field.
2. blue-phase liquid crystal display panel as claimed in claim 1, it is characterised in that described upper electrode layer is covered by described shielding layer on described upright projection direction.
3. blue-phase liquid crystal display panel as claimed in claim 1, it is characterised in that described upper electrode layer is overlapping with the plurality of data wire or the plurality of gate line on described upright projection direction.
4. blue-phase liquid crystal display panel as claimed in claim 1, it is characterised in that described upper electrode layer includes light transmitting electro-conductive material.
5. blue-phase liquid crystal display panel as claimed in claim 1, it is characterised in that described upper electrode layer is metal conducting layer.
6. blue-phase liquid crystal display panel as claimed in claim 1, it is characterised in that described blue-phase liquid crystal display panel also includes multiple common wire, and the plurality of common wire is electrically connected the public electrode of the plurality of pixel region.
7. blue-phase liquid crystal display panel as claimed in claim 1, it is characterised in that described blue-phase liquid crystal display panel also includes blue phase liquid crystal layer, and it is arranged between described upper substrate and described infrabasal plate.
8. the manufacture method of a blue-phase liquid crystal display panel, it is characterised in that described manufacture method comprises the following steps:
Infrabasal plate is provided, described infrabasal plate has the multiple data wires and multiple gate line that are crisscross arranged, the plurality of data wire and the plurality of gate line are arranged in a mutually vertical manner, and the plurality of data wire and the plurality of gate line define multiple pixel region, wherein said pixel region has at least one public electrode and at least one pixel electrode, described public electrode and described pixel electrode are positioned on described infrabasal plate, described pixel electrode and described public electrode are arranged alternately, and described pixel electrode and described public electrode reciprocal action are to produce the first electric field；
Upper substrate is provided；
Described upper substrate is formed shielding layer；
Described shielding layer is formed upper electrode layer；And
Blue phase liquid crystal layer is formed between described upper substrate and described infrabasal plate；
Wherein, the setting corresponding with the plurality of data wire of described infrabasal plate and the plurality of gate line of described shielding layer, described shielding layer is overlapping with the plurality of data wire and the plurality of gate line on upright projection direction, and the pixel electrode reciprocal action of described upper electrode layer and the plurality of pixel region is to produce the second electric field.
9. the manufacture method of blue-phase liquid crystal display panel as claimed in claim 8, it is characterised in that described upper electrode layer is covered by described shielding layer on described upright projection direction.
10. the manufacture method of blue-phase liquid crystal display panel as claimed in claim 8, it is characterised in that described upper electrode layer is overlapping with the plurality of data wire or the plurality of gate line on described upright projection direction.
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Cited By (1)
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| CN107357106A (en) * | 2017-09-11 | 2017-11-17 | 京东方科技集团股份有限公司 | A kind of liquid crystal display panel and preparation method thereof, liquid crystal display device |
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