CN102012574A - Manufacturing method of liquid crystal display panel and liquid crystal display substrate - Google Patents
Manufacturing method of liquid crystal display panel and liquid crystal display substrate Download PDFInfo
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- CN102012574A CN102012574A CN2009100920012A CN200910092001A CN102012574A CN 102012574 A CN102012574 A CN 102012574A CN 2009100920012 A CN2009100920012 A CN 2009100920012A CN 200910092001 A CN200910092001 A CN 200910092001A CN 102012574 A CN102012574 A CN 102012574A
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Abstract
The invention relates to a manufacturing method of a liquid crystal display panel and a liquid crystal display substrate. The liquid crystal display panel comprises a first display substrate forming a drive switch, and a second display substrate, wherein a columnar insulated cushion is formed between the first display substrate and the second display substrate; a common electrode is formed on a first substrate; a pixel electrode is formed a second substrate; and the columnar insulated cushion contains a conductive material, one end of the columnar insulated cushion is connected with the pixel electrode, and the other end of the columnar insulated cushion is connected with the drive switch. By the method, connection circuits do not need arranging around the liquid crystal display substrate to be connected with the common electrode, and adverse problems such as short circuits and the like can be solved.
Description
Technical field
The embodiment of the invention relates to lcd technology, relates in particular to the manufacture method of a kind of liquid crystal panel and liquid crystal display substrate.
Background technology
LCD (Liquid Crystal Display; Hereinafter to be referred as: LCD) be present main panel display apparatus, especially thin film transistor (TFT) (Thin Film Transistor; Hereinafter to be referred as: TFT) LCD has characteristics such as volume is little, low in energy consumption, radiationless, manufacturing cost is relatively low, has occupied leading position in current panel display apparatus market.
The liquid crystal panel of TFT-LCD by two display base plates to box after filling liquid crystal layer and forming.Wherein, first display base plate often is called array base palte because of forming array structure, and second display base plate is called color membrane substrates because of forming color film matrix.
Array base palte generally includes first underlay substrate, is formed with horizontal vertical data line crossing and controlling grid scan line on first underlay substrate, encloses to form a plurality of pixel cells.Be formed with TFT switch and pixel electrode in each pixel cell.The TFT switch comprises gate electrode, active layer, source electrode and drain electrode.Infall at data line and controlling grid scan line, gate electrode links to each other with controlling grid scan line, and the source electrode links to each other with data line, and drain electrode links to each other with pixel electrode, source electrode and drain electrode are by active layer conducting under the cut-in voltage of gate electrode, thus connection data line and pixel electrode.Between each layer conducting material structure of array base palte, can be provided with as insulating material such as gate insulator and passivation layers and keep insulation.
Color membrane substrates comprises second underlay substrate, is formed with on second underlay substrate to be latticed black matrix, is filled with color film resin between the black matrix, respectively corresponding each pixel cell in the formed zone of black matrix grid.On color membrane substrates, also be formed with public electrode, form between public electrode and the pixel electrode and drive the electric field that liquid crystal layer reverses.Usually, also be laid with the public electrode wire that runs through each pixel cell on array base palte, public electrode wire links to each other with public electrode in the edge of array base palte, for public electrode provides constant voltage.For keeping that the distance between array base palte behind the box and the color membrane substrates is formed cylindrical spacer usually on the black matrix of color membrane substrates, behind box, the cylindrical spacer conflict keeps the distance between array base palte and the color membrane substrates on the TFT of array base palte switch.
In carrying out The Research of Relevant Technology process of the present invention, the inventor finds that there is following defective in prior art: must link to each other by the array base palte peripheric circuit structure between public electrode and the public electrode wire, as adopt conductive silver glue or conductive metal balls etc., and this syndeton causes electrostatic breakdown easily aborning, makes TFT-LCD produce defectives such as bright line is bad.
Summary of the invention
The purpose of the embodiment of the invention provides the manufacture method of a kind of liquid crystal panel and liquid crystal display substrate, to improve the yields of liquid crystal panel.
For achieving the above object, the invention provides a kind of liquid crystal panel, comprise first display base plate and second display base plate; Described first display base plate comprises first underlay substrate, is formed with a plurality of pixel cells on described first underlay substrate, is formed with driving switch in the described pixel cell; Described second display base plate comprises second underlay substrate; Be formed with cylindrical spacer between described first display base plate and second display base plate, wherein:
Be formed with public electrode on described first underlay substrate, be formed with the pixel electrode of corresponding each pixel cell on described second underlay substrate;
Described cylindrical spacer comprises conductive material, and an end of described cylindrical spacer connects described pixel electrode, and the other end connects described driving switch.
For achieving the above object, the present invention also provides a kind of manufacture method of liquid crystal display substrate, is included in the step that forms driving switch on first underlay substrate, also comprises:
On described first underlay substrate, form public electrode;
Keep the upper surface of drain electrode in the described driving switch to be in exposed state, be used for the time linking to each other with pixel electrode on another liquid crystal display substrate to box.
For achieving the above object, the present invention also provides the manufacture method of another kind of liquid crystal display substrate, comprising:
On second underlay substrate, form cylindrical spacer;
Pixel deposition electrode material membrane on second underlay substrate that forms cylindrical spacer;
Described pixel electrode material film is carried out composition technology, formation comprises the pattern of pixel electrode, and keep the pixel electrode material film on the surface of described cylindrical spacer, the drain electrode that described cylindrical spacer is used for connecting described pixel electrode and is arranged on the driving switch on another liquid crystal display substrate during to box at two liquid crystal display substrates.
By above technical scheme as can be known, the present invention adopts structures such as public electrode and driving switch is arranged on technological means on the same liquid crystal display substrate, can around liquid crystal display substrate, connecting circuit be set and connect public electrode, thereby the short circuit problem that can avoid peripheral circuit conductive silver glue and metallic particles etc. to cause, thereby improved the yields of liquid crystal panel.In addition, the present invention adopts pixel electrode and driving switch branch is located on the different liquid crystal display substrates, with the interconnective technological means of cylindrical spacer, avoided the cylindrical spacer to replace at the highest point of driving switch and be easy to be subjected to displacement, avoided liquid crystal panel be squeezed, cylindrical spacer is subjected to displacement and the light leak that causes is bad when colliding.
Description of drawings
The fragmentary top TV structure synoptic diagram of first display base plate in the liquid crystal panel that Fig. 1 provides for the embodiment of the invention one;
The fragmentary top TV structure synoptic diagram of second display base plate in the liquid crystal panel that Fig. 2 provides for the embodiment of the invention one;
The cross-sectional view of Fig. 3 for liquid crystal panel being dissectd along the A-A line among Fig. 1 and Fig. 2;
The fragmentary top TV structure synoptic diagram of first display base plate in the liquid crystal panel that Fig. 4 provides for the embodiment of the invention two;
The cross-sectional view of Fig. 5 for liquid crystal panel being dissectd along the B-B line among Fig. 4;
The fragmentary top TV structure synoptic diagram of first display base plate in the liquid crystal panel that Fig. 6 provides for the embodiment of the invention three;
The cross-sectional view of Fig. 7 for liquid crystal panel being dissectd along the C-C line among Fig. 6;
The manufacture method of a kind of liquid crystal display substrate that Fig. 8 provides for the embodiment of the invention four;
The manufacture method of the another kind of liquid crystal display substrate that Fig. 9 provides for the embodiment of the invention five.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one
The fragmentary top TV structure synoptic diagram of first display base plate in the liquid crystal panel that Fig. 1 provides for the embodiment of the invention one, the fragmentary top TV structure synoptic diagram of second display base plate in the liquid crystal panel that Fig. 2 provides for the embodiment of the invention one, the cross-sectional view of Fig. 3 for liquid crystal panel being dissectd along the A-A line among Fig. 1 and Fig. 2.This liquid crystal panel comprises first display base plate and second display base plate.
As shown in figures 1 and 3, first display base plate comprises on first underlay substrate, 1, the first underlay substrate 1 and is formed with horizontal vertical data line crossing 2 and controlling grid scan line 3, encloses and forms a plurality of pixel cells that matrix form is arranged.Be formed with the driving switch that connects data line 2 and controlling grid scan line 3 in each pixel cell.For TFT-LCD, the structure of driving switch specifically comprises: gate electrode 4, active layer 5, source electrode 6 and drain electrode 7.Gate electrode 4 links to each other with adjacent controlling grid scan line 3, and source electrode 6 links to each other with adjacent data line 2, and drain electrode 7 is used for linking to each other with pixel electrode 9.For keeping the insulation between each conducting element, on the pattern of gate electrode 4 and controlling grid scan line 3, be coated with gate insulator 12, on the pattern of active layer 5, source electrode 6, drain electrode 7 and data line 2, be coated with passivation layer 13.Also be formed with interconnective public electrode wire 10 and public electrode 11 on first underlay substrate 1.In the present embodiment, public electrode wire 10 forms with layer with controlling grid scan line 3, be coated with gate insulator 12 and passivation layer 13 on the controlling grid scan line 3, public electrode 11 is formed on the passivation layer 13, and public electrode 11 links to each other with public electrode wire 10 by the public electrode via hole 19 that runs through gate insulator 12 and passivation layer 13.Be the light leakage phenomena of avoiding data line 2 both sides to occur, can also form shield bars 18 in the position of data line 2 both sides, shield bars 18 can adopt metal material to make, and specifically can form with layer with controlling grid scan line 3, interconnects with public electrode wire 10.
As shown in Figures 2 and 3, second display base plate comprises being formed with on second underlay substrate, 14, the second underlay substrates 14 deceives matrix 15, is formed with color film resin 16 in the grid of black matrix 15, respectively corresponding each pixel cell.The effect of black matrix 15 is to block the element that controlling grid scan line 3 on first display base plate, data line 2 and driving switch etc. can not printing opacities, the effect of color film resin 16 be in the respective pixel unit can printing opacity part, when light sees through, filter, thereby make light present different colors.Usually, the color of color film resin 16 can be the red, green, blue three primary colours.Also be formed with pixel electrode 9 on second underlay substrate 14, the zone of corresponding each pixel cell is provided with, and specifically can be formed on the color film resin 16.
As shown in Figure 3, first display base plate and second display base plate to box after the filling liquid crystal layer.Also be formed with cylindrical spacer 17 between first display base plate and second display base plate, cylindrical spacer 17 specifically can be formed on second display base plate.Cylindrical spacer 17 comprises conductive material, and an end of this cylindrical spacer 17 connects pixel electrode 9, and the other end is used to connect the driving switch on first display base plate.Concrete, can on the passivation layer 13 of driving switch, form the first pixel electrode via hole 8, the end of cylindrical spacer 17 is inserted in the first pixel electrode via hole 8 connect driving switch.In TFT-LCD, the first pixel electrode via hole 8 specifically is that the position of corresponding drain electrode 7 forms, and drain electrode 7 links to each other with pixel electrode 9 by the cylindrical spacer 17 that inserts the first pixel electrode via hole 8.
In the present embodiment, the conductive material that cylindrical spacer comprises can be entrained among the cylindrical spacer, also can be coated in the cylindrical spacer surface, preferably conductive material is for covering the pixel electrode material on cylindrical spacer surface, then can make full use of existing material and preparation technology on the color membrane substrates, not increase product manufacturing process and cost.In order to make cylindrical spacer and structure all around that the big contact area of trying one's best be arranged, can design cylindrical spacer is round platform or prismatic platform, the longitudinal cross-section that is cylindrical spacer is shaped as trapezoidal, cylindrical spacer is the top towards the end of first display base plate, towards the end of second display base plate is the bottom, and the cross-sectional area on top is less than the cross-sectional area of bottom.The top of cylindrical spacer and bottom shape can be circle, quadrilateral or other polygon.Preferably the width on cylindrical spacer top is 1～40 micron (μ m), and the width of bottom is 1～80 μ m.Because the contact position of cylindrical spacer and display base plate changes, in order to keep same box thickness, needing suitably increases the height of cylindrical spacer, and added value is identical with the difference in height on drain electrode and TFT switch top.
In the technical scheme of present embodiment, pixel electrode is formed on second display base plate, promptly on the color membrane substrates, links to each other with driving switch by cylindrical spacer.Said structure makes cylindrical spacer need insert in the via hole of passivation layer and contacts with drain electrode, then the end of cylindrical spacer is in lower position, it is poor to have formed end all around, the wall surface of the hole excessively of passivation layer can play fixing effect to cylindrical spacer, thereby form a kind of metastable structure, solution TFT-LCD liquid crystal panel is squeezed, the light leak problem that causes is moved in the position owing to cylindrical spacer when impacting.
The technical scheme of present embodiment also is formed on public electrode on the passivation layer of first display base plate, link to each other with the public electrode wire on first display base plate that coexists, structures such as conductive silver glue that can be by periphery or metallic particles connect, therefore, both save the coating processes of materials such as conductive silver glue, metallic particles, solve structures such as conductive silver glue or metallic particles again and electrostatic breakdown has taken place easily and problem of short-circuit, improved the yields of LCD.Public electrode is formed in each pixel cell, preferably adopts transparent conductive material, for example tin indium oxide (Indium Tin Oxide; Hereinafter to be referred as: ITO) or indium zinc oxide (Indium Zinc Oxide; Hereinafter to be referred as: IZO) etc.But the common resistance of above-mentioned material is bigger, makes that the voltage of the public electrode in the whole liquid crystal panel is unbalanced.So the public electrode wire made from metal material connects and is arranged on first display base plate usually, connects public electrode, for it provides balanced voltage.Adopt the technical scheme of present embodiment, public electrode wire and public electrode can be provided with layer, public electrode can all link to each other with public electrode wire in each pixel cell, has increased tie point quantity, can make the voltage in the public electrode more average.Because public electrode wire adopts metal material to make, promptly can adopt the material of controlling grid scan line or data line to make, so can when forming controlling grid scan line or data line, form public electrode wire, then on gate insulator and/or passivation layer, form the public electrode via hole, the position of the corresponding public electrode wire of public electrode via hole makes public electrode pass through the public electrode via hole and links to each other with public electrode wire.In concrete the application, because public electrode wire need connect the entire row of pixels unit usually, promptly with the gated sweep line parallel, so public electrode wire is common and controlling grid scan line forms with layer.Said structure can form public electrode wire and public electrode respectively with twice composition technology after forming passivation layer, can save operation.
In concrete the application,, need make the pattern of public electrode and first pixel electrode on the drain electrode cross the span setting for the pixel electrode of avoiding public electrode and form subsequently is conducted.Wherein a kind of implementation be pattern that public electrode is set be respectively formed in each pixel cell, the blocky of each interval, then the zone on the first pixel electrode via hole does not form the pattern of public electrode.Perhaps, also can on the pattern of public electrode, form via hole at interval, at interval the position of via hole is corresponding with the position of the first pixel electrode via hole, and the aperture of interval via hole is greater than the aperture of the first pixel electrode via hole, thereby public electrode is not conducted with drain electrode and pixel electrode.
Embodiment two
The fragmentary top TV structure synoptic diagram of first display base plate in the liquid crystal panel that Fig. 4 provides for the embodiment of the invention two, the structure of second display base plate can be referring to shown in Figure 2, the cross-sectional view of Fig. 5 for along the B-B line among Fig. 4 liquid crystal panel being dissectd wherein increases the structure that shows second display base plate.
The difference of present embodiment and embodiment one is: public electrode wire 10 forms with layer with controlling grid scan line 3, and public electrode 11 can be formed on the public electrode wire 10 or under.Can form public electrode wire 10 and controlling grid scan line 3 earlier, public electrode 11 is formed on has on first underlay substrate 1 of public electrode wire 10 and controlling grid scan line 3, cover under the gate insulator 12, perhaps, can form public electrode 11 earlier, public electrode wire 10 is formed on the public electrode 11.Public electrode 11 directly links to each other with public electrode wire 10, then the public electrode via hole needn't be set.
As shown in Figure 5, in concrete the application, also passivation layer 13 can be set, and directly drain electrode 7 be remained on exposed state, then the time, can be directly link to each other with pixel electrode 9 on second display base plate to box.
Adopt the technical scheme that passivation layer is not set, can simplify the operation that a step etching forms the first pixel electrode via hole, can reduce production costs.Employing is provided with the technical scheme of the passivation layer and the first pixel electrode via hole, and cylindrical spacer is inserted among the first pixel electrode via hole, plays fixing effect.Deisgn product structure and technological process according to the actual requirements in concrete the production.
Often resistance was bigger when public electrode adopted transparent conductive material to prepare, the effect that public electrode wire is set is to adopt the low material of metal constant resistance to prepare, increase to public electrode the tie point of common electric voltage is provided, improve the homogeneity of common electric voltage in the array base palte.
Embodiment three
The fragmentary top TV structure synoptic diagram of first display base plate in the liquid crystal panel that Fig. 6 provides for the embodiment of the invention three, the structure of second display base plate can be referring to shown in Figure 2, the cross-sectional view of Fig. 7 for along the C-C line among Fig. 6 liquid crystal panel being dissectd wherein increases the structure that shows second display base plate.
The difference of present embodiment and the foregoing description is, public electrode wire need not be set, and adopts the form that full wafer public electrode 11 is set.When the area of public electrode 11 increases, can have less resistive, satisfy the requirement of common electric voltage homogenising.Public electrode 11 is formed on the passivation layer 13, is formed with the second pixel electrode via hole 20 on the public electrode 11, and cylindrical spacer 17 passes the second pixel electrode via hole 20, and with public electrode 11 spaces.Preferably the second pixel electrode via hole 20 is than the big via hole of cylindrical spacer 17 diameters, as shown in Figure 6, links to each other with public electrode 11 to avoid pixel electrode 9.
Adopt the technical scheme of present embodiment can avoid being provided with public electrode wire, and needn't increase extra hierarchical structure and technology simultaneously.
If consider from the angle that reduces composition technology, also the public electrode of full wafer can be set, and form another insulation course, so that public electrode and other conductive structure is isolated.For example, public electrode can be arranged on first underlay substrate, then form an insulation course again, subsequent pattern such as preparation controlling grid scan line and gate electrode on this insulation course.The distance of public electrode and liquid crystal layer is reduced as far as possible.
In the liquid crystal panel that various embodiments of the present invention provided, black matrix and color film resin are not limited to be arranged on second display base plate, according to concrete needs, also can be arranged on first display base plate deceiving matrix and color film resin, block non-transmission region as long as black matrix is played, and make color film resin carry out filter action to get final product each pixel cell.
The embodiment of the invention also provides a kind of manufacture method of liquid crystal display substrate, is included on first underlay substrate step that forms driving switch, and also is included on first underlay substrate and forms public electrode; And the upper surface of drain electrode is in exposed state in the maintenance driving switch, is used for to box the time linking to each other with pixel electrode on another liquid crystal display substrate.
The manufacture method of a kind of liquid crystal display substrate provided by the present invention can be used for making first display base plate in the liquid crystal panel of the present invention, public electrode is formed on the array base palte, need not with conducting resinl public electrode be connected to driving circuit on the array base palte at periphery, strengthen connection reliability.The set-up mode of public electrode on array base palte has multiple, can select to be provided with or public electrode wire is not set, and describes below by preferred embodiment.
Embodiment four
The manufacture method of a kind of liquid crystal display substrate that Fig. 8 provides for the embodiment of the invention four, this manufacture method is the method for manufacturing array substrate, comprises the steps:
In concrete the application, be not limited to adopt the step 804 and 805 of present embodiment to form the pattern of active layer, data line, source electrode and drain electrode.Can also form above-mentioned pattern respectively by twice deposition, twice composition technology, that is:
At first deposit active layer film, to the active layer film employing composition technology of amorphous silicon, carry out dry etching, form the silicon isolated island, the gate insulator between grid metal material and the amorphous silicon plays the effect that stops etching grid metal.
Then can deposit data wire material film, the method deposit thickness that for example still adopts magnetron sputtering is 1000
To 7000
Metallic film, adopt the monotone mask plate that data wire material film is carried out composition technology, form the pattern of data line, source electrode and drain electrode, the end of source electrode and drain electrode is formed on the active layer, and is oppositely arranged.
On first display base plate, can also comprise the flow process for preparing public electrode wire, public electrode wire can form and interconnect with layer with public electrode, preferably public electrode wire adopts metal material to make, then can utilize grid metal material or data line material to make, concrete: form the pattern of public electrode wire when forming controlling grid scan line and gate electrode pattern, public electrode wire and controlling grid scan line space are provided with; And, when forming the first pixel electrode via hole, forming the public electrode via hole, the position of the corresponding public electrode wire of public electrode via hole is provided with, and then public electrode links to each other with public electrode wire by the public electrode via hole.
The technical scheme of employing present embodiment can prepare first display base plate in the liquid crystal panel of the present invention, the first pixel electrode via hole that provides cylindrical spacer to insert in this first display base plate, promptly can keep pixel electrode and drain electrode to be electrically connected, and, the position of drain electrode is lower with respect to the position of TFT raceway groove, also has the first pixel electrode via hole to position-limiting action that cylindrical spacer played, make that the position of cylindrical spacer is more stable, when liquid crystal panel is squeezed, be difficult for being subjected to displacement.
In addition, in the technical scheme of present embodiment, public electrode and public electrode wire all are formed on first display base plate, can realize in each pixel cell of first display base plate that multiple spot connects, needn't adopt peripheral connecting circuit such as conductive silver glue or metallic particles, omit the preparation section of peripheral connecting circuit, also avoided producing bad problems such as short circuit.The multiple spot of public electrode and public electrode wire is electrically connected, and makes the voltage homogeneity in the public electrode stronger, can optimize the display effect of LCD.
Insert in the first pixel electrode via hole and be connected in order to make first display base plate and second display base plate to box the time, not influence cylindrical spacer with drain electrode, when on first display base plate, applying PI (polyimide) glue making alignment films, can selectively apply, make the pattern and the first pixel electrode via hole space of alignment films, expose the drain electrode under the first pixel electrode via hole.When carrying out PI glue coating process, the zone that can on the PI transfer plate, leave some space in advance, the position consistency of its position and the first pixel electrode via hole.After PI glue coating process finished, the position of the first pixel electrode via hole did not have PI glue.
The embodiment of the invention also provides the manufacture method of another kind of liquid crystal display substrate, comprises the steps:
On second underlay substrate, form cylindrical spacer;
Pixel deposition electrode material membrane on second underlay substrate that forms cylindrical spacer;
The pixel electrode material film is carried out composition technology, formation comprises the pattern of pixel electrode, and keep the pixel electrode material film on the surface of cylindrical spacer, the drain electrode that cylindrical spacer is used for connecting pixel electrode and is arranged on the driving switch on another liquid crystal display substrate during to box at two liquid crystal display substrates.
The manufacture method of another kind of liquid crystal display substrate provided by the present invention can be used for making second display base plate in the liquid crystal panel of the present invention, public electrode and public electrode wire are formed on the same liquid crystal display substrate jointly, pixel electrode is formed on another liquid crystal display substrate, then can either form and drive the electric field that liquid crystal reverses, need not strengthen connection reliability at periphery with connection public electrode and public electrode wires such as conducting resinls again.The set-up mode of pixel electrode on second display base plate has multiple, describes below by preferred embodiment.
Embodiment five
The manufacture method of the another kind of liquid crystal display substrate that Fig. 9 provides for the embodiment of the invention five, this manufacture method is promptly made the method for color membrane substrates, comprises the steps:
The color film resin of black matrix and different colours can form respectively, at first use chemical vapor deposition method to form the black matrix layer of thickness at 1 μ m to 5 μ m, the single layer structure that the material of black matrix can constitute for chromium or chromium oxide usually, also can use the unitized construction of above-mentioned different materials film, then form the pattern that comprises black matrix by composition technology with mask plate;
Then, can utilize and apply dispersion method applies 1 μ m to 5 μ m on second underlay substrate red pixel resin bed, the material of pixel resin layer is acrylic acid class photoresist or other carboxylic acid type color pigments resins normally, form red color film resin by composition technology then, utilize similar technology to form green and blue color film resin respectively.Perhaps, black matrix and color film resin also can be formed on other positions in the liquid crystal panel.
Insert in the first pixel electrode via hole and be connected in order to make first display base plate and second display base plate to box the time, not influence cylindrical spacer with drain electrode, when on second display base plate, applying PI glue making alignment films, can selectively apply, make the pattern and the cylindrical spacer space of alignment films, expose the cylindrical spacer that is coated with the pixel electrode material.When carrying out PI glue coating process, the zone that can on the PI transfer plate, leave some space in advance, the position consistency of its position and cylindrical spacer.After PI glue coating process finished, the position of cylindrical spacer did not have PI glue.
The technical scheme of employing present embodiment can prepare second display base plate in the liquid crystal panel of the present invention, is formed with cylindrical spacer on this second display base plate, can keep being divided into the pixel electrode of two liquid crystal display substrates and being electrically connected of drain electrode.The position of drain electrode is lower with respect to the position of TFT raceway groove, also has the first pixel electrode via hole to the position-limiting action that cylindrical spacer played, and makes that the position of cylindrical spacer is more stable, is difficult for being subjected to displacement when liquid crystal panel is squeezed.
The liquid crystal panel that the embodiment of the invention provides is not limited to above-mentioned manufacture method and prepares, and perhaps also can realize the present invention by selecting different materials or combination of materials.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (18)
1. a liquid crystal panel comprises first display base plate and second display base plate; Described first display base plate comprises first underlay substrate, is formed with a plurality of pixel cells on described first underlay substrate, is formed with driving switch in the described pixel cell; Described second display base plate comprises second underlay substrate; Be formed with cylindrical spacer between described first display base plate and second display base plate, it is characterized in that:
Be formed with public electrode on described first underlay substrate, be formed with the pixel electrode of corresponding each pixel cell on described second underlay substrate;
Described cylindrical spacer comprises conductive material, and an end of described cylindrical spacer connects described pixel electrode, and the other end connects described driving switch.
2. liquid crystal panel according to claim 1 is characterized in that:
Be formed with passivation layer on the described driving switch, be formed with the first pixel electrode via hole on the described passivation layer, the pattern of described public electrode and described first pixel electrode are crossed the span setting, and described cylindrical spacer links to each other with described driving switch by the first pixel electrode via hole.
3. liquid crystal panel according to claim 2 is characterized in that:
Described public electrode is formed on the described passivation layer, is formed with the second pixel electrode via hole on the described public electrode, and described cylindrical spacer passes the described second pixel electrode via hole, and with described public electrode space.
4. liquid crystal panel according to claim 2 is characterized in that:
Also comprise public electrode wire, described public electrode links to each other with described public electrode wire.
5. liquid crystal panel according to claim 4 is characterized in that:
Described public electrode wire and controlling grid scan line form with layer, be coated with gate insulator and passivation layer on the described controlling grid scan line, described public electrode is formed on the described passivation layer, and described public electrode links to each other with described public electrode wire by the public electrode via hole that runs through described gate insulator and passivation layer.
6. liquid crystal panel according to claim 4 is characterized in that:
Described public electrode wire and controlling grid scan line form with layer, described public electrode be formed on the described public electrode wire or under.
7. according to claim 4 or 5 or 6 described liquid crystal panels, it is characterized in that:
The pattern of described public electrode be respectively formed in each pixel cell, the blocky of each interval.
8. according to the arbitrary described liquid crystal panel of claim 1～6, it is characterized in that:
Also be formed with black matrix on described second underlay substrate, be formed with respectively corresponding each pixel cell of color film resin in the grid of black matrix; Described pixel electrode is formed on the described color film resin.
9. according to the arbitrary described liquid crystal panel of claim 2～6, it is characterized in that:
Described driving switch comprises gate electrode, active layer, source electrode and drain electrode, described gate electrode links to each other with controlling grid scan line, described source electrode links to each other with data line, the position of the corresponding described drain electrode of the described first pixel electrode via hole forms, and described drain electrode links to each other with described pixel electrode by the cylindrical spacer that inserts the described first pixel electrode via hole.
10. according to the arbitrary described liquid crystal panel of claim 1～6, it is characterized in that:
The conductive material that described cylindrical spacer comprises is the pixel electrode material that covers described cylindrical spacer surface.
11., it is characterized in that according to the arbitrary described liquid crystal panel of claim 1～6:
The longitudinal cross-section of described cylindrical spacer is shaped as trapezoidal, is the top towards the end of described first display base plate, is the bottom towards the end of described second display base plate, and the cross-sectional area on described top is less than the cross-sectional area of described bottom.
12. liquid crystal panel according to claim 11 is characterized in that:
The width on described cylindrical spacer top is 1～40 micron, and the width of bottom is 1～80 micron.
13. liquid crystal panel according to claim 11 is characterized in that:
The top of described cylindrical spacer and bottom are shaped as circle or quadrilateral.
14. the manufacture method of a liquid crystal display substrate is included in the step that forms driving switch on first underlay substrate, it is characterized in that, also comprises:
On described first underlay substrate, form public electrode;
Keep the upper surface of drain electrode in the described driving switch to be in exposed state, be used for the time linking to each other with pixel electrode on another liquid crystal display substrate to box.
15. the manufacture method of liquid crystal display substrate according to claim 14 is characterized in that, forms driving switch and public electrode on first underlay substrate, and the step that exposes the upper surface of drain electrode in the described driving switch comprises:
Deposition grid metallic film on first underlay substrate;
Described grid metallic film is carried out composition technology, form the pattern that comprises controlling grid scan line and gate electrode;
On first underlay substrate that forms described controlling grid scan line and gate electrode, form gate insulator;
Active layer film of deposition and data line material film on described gate insulator;
Described active layer film and data line material film are carried out composition technology, form the pattern that comprises active layer, source electrode, drain electrode and data line, described active layer, source electrode, drain electrode and described gate electrode are as described driving switch;
On first underlay substrate that forms described active layer, source electrode, drain electrode and data line, form passivation layer;
Described passivation layer is carried out composition technology, form the pattern of pixel electrode via hole, the position of respectively corresponding each the described drain electrode of described pixel electrode via hole, described pixel electrode via hole is used to connect described drain electrode and pixel electrode;
Deposition public electrode film on described passivation layer;
Described public electrode film is adopted composition technology, form the pattern that comprises public electrode, the pattern of described public electrode and described pixel electrode are crossed the span setting.
16. the manufacture method of liquid crystal display substrate according to claim 15 is characterized in that, also comprises:
Form the pattern of public electrode wire when forming controlling grid scan line and gate electrode pattern, described public electrode wire and described controlling grid scan line space are provided with;
Form the public electrode via hole when forming described pixel electrode via hole, the position of the corresponding described public electrode wire of described public electrode via hole is provided with, and described public electrode links to each other with described public electrode wire by described public electrode via hole.
17. the manufacture method of a liquid crystal display substrate is characterized in that, comprising:
On second underlay substrate, form cylindrical spacer;
Pixel deposition electrode material membrane on second underlay substrate that forms cylindrical spacer;
Described pixel electrode material film is carried out composition technology, formation comprises the pattern of pixel electrode, and keep the pixel electrode material film on the surface of described cylindrical spacer, the drain electrode that described cylindrical spacer is used for connecting described pixel electrode and is arranged on the driving switch on another liquid crystal display substrate during to box at two liquid crystal display substrates.
18. the manufacture method of liquid crystal display substrate according to claim 17 is characterized in that, forms cylindrical spacer and comprise on second underlay substrate:
On second underlay substrate, form black matrix and color film resin;
On described color film resin, form cylindrical spacer.
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| CN111430373A (en) * | 2020-03-31 | 2020-07-17 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN114609838A (en) * | 2022-03-22 | 2022-06-10 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
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