CN101699335A - Liquid crystal display panel and manufacturing method thereof - Google Patents
Liquid crystal display panel and manufacturing method thereof Download PDFInfo
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- CN101699335A CN101699335A CN200910108395A CN200910108395A CN101699335A CN 101699335 A CN101699335 A CN 101699335A CN 200910108395 A CN200910108395 A CN 200910108395A CN 200910108395 A CN200910108395 A CN 200910108395A CN 101699335 A CN101699335 A CN 101699335A
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Abstract
The invention relates to a liquid crystal display panel and a manufacturing method thereof. The liquid crystal display panel comprises a first substrate, a second substrate, a frame glue and a liquid crystal layer positioned between the first substrate and the second substrate; the peripheral region of the first substrate is provided with a first metal wiring, a dielectric layer covering the first metal wiring and a contact electrode, wherein, the dielectric layer is provided with a contact hole, and the contact electrode covers on the inner surface of the dielectric layer and the contact hole; the second substrate is arranged corresponding to the first substrate; the frame glue is arranged between the peripheral regions of the first substrate and the second substrate, and comprises conducting particles which are arranged in the contact hole and are contacted with the contact electrode, so that the liquid crystal display panel of the invention can avoid Mura phenomenon of the peripheral picture display caused by the condition that the gap of peripheral region is higher than the gap of the central region.
Description
[technical field]
The present invention relates to a kind of display panel and manufacture method thereof, particularly relate to a kind of display panels and manufacture method thereof, its panel periphery picture that the gap produced that can avoid the gap of panel periphery to be higher than the face plate center zone shows the phenomenon of uneven (Mura).
[background technology]
Display panels is the key element in the liquid crystal indicator, the liquid crystal molecule that its main element generally includes two glass substrates, is coated on the frame glue between these two glass substrates and is poured in this frame glue and these two spaces that glass substrate is formed.In two above-mentioned glass substrates, one of them substrate has many group pixel electrodes, is used for the anglec of rotation according to the data voltage control liquid crystal molecule of being imported; Another substrate then has colored filter, is used for making liquid crystal panel to present coloured image.In the prior art, the thin film transistor base plate of display panels and colored optical filtering substrates are to utilize frame glue to fit, and in frame glue, be provided with the separation material that supports usefulness and support the spacing of two substrates, and utilize conducting particles to come the common electrode of conducting upper substrate and the common electrode of infrabasal plate.
In recent years, in order to improve the peripheral utilization factor of glass, frame glue and the applying of carrying out two substrates after conducting particles can mix earlier again.Yet, because the diameter of conducting particles is greater than the diameter of separation material, make the gap in panel periphery zone and face plate center zone produce difference in height, What is more, separation material that is used to support and conducting particles are superimposed upon the same position between thin film transistor base plate and the colored optical filtering substrates simultaneously, cause the periphery of display panels to produce different gaps with the central area, cause the peripheral picture of display panels to produce the phenomenon that shows uneven (Mura), and cause the common electrode that conducting particles can not the conducting upper substrate and the common electrode of infrabasal plate because separation material and conducting particles superpose at same position.
Fig. 1 is the floor map of available liquid crystal display panel, and Fig. 2 is a display panels shown in Figure 1 sectional view along A-A '.Please refer to Fig. 1 and Fig. 2, this display panels 10 comprises thin film transistor base plate 11, colored optical filtering substrates 12, liquid crystal layer 13 and frame glue 14, this thin film transistor base plate 11 is oppositely arranged with colored optical filtering substrates 12 intervals one determining deviation, liquid crystal layer 13 is arranged between thin film transistor base plate 11 and the colored optical filtering substrates 12, frame glue 14 is folded between this thin film transistor base plate 11 and the colored optical filtering substrates 12 and forms liquid crystal cell, be used for ccontaining liquid crystal layer 13, then be mixed with in the frame glue 14 and support with separation material 15 and conducting particles 16.
Fig. 3 is the partial enlarged drawing in the frame glue zone of display panels shown in Figure 2, and thin film transistor base plate 11 and colored optical filtering substrates 12 utilize frame glue 14 to fit.Generally speaking, support is used to support two substrates to keep certain spacing with separation material 15.Conducting particles 16 is arranged in the frame glue 14, comes the common electrode 17 and the common electrode 18 of conducting two substrates by conducting particles 16, and makes the common electrode 17 and common electrode 18 equipotentials of two substrates.As previously mentioned, in order to improve the peripheral utilization factor of glass, carry out the applying of two substrates after can making frame glue 14 and conducting particles 16 mixing earlier again.Yet, because the diameter of conducting particles 16 is greater than the diameter of separation material 15, make gap, display panels 10 neighboring areas and face plate center zone produce difference in height, What is more, separation material 15 that is used to support and conducting particles 16 are superimposed upon the same position between thin film transistor base plate 11 and the colored optical filtering substrates 12 simultaneously, cause the neighboring area of display panels 10 and the different gap that the central area produces, cause display panels 10 peripheries the phenomenon (as shown in Figure 1) that picture shows uneven (Mura) to occur, and because the stack of separation material 15 and conducting particles 16 cause the common electrode 17 of common electrode 18 that conducting particles 16 can not the conducting upper substrate and infrabasal plate.Thus, the Presentation Function of display panels 10 integral body will be influenced.
[summary of the invention]
The invention provides a kind of display panels, when it can solve the use frame glue that exists in the prior art with conducting particles mixing applying two substrates, because the particle diameter of conducting particles is greater than the size diameter of separation material, cause the gap in panel periphery zone and face plate center zone to produce difference in height, What is more makes to support with separation material and conducting particles and is superimposed upon each other on the same position between thin film transistor base plate and the colored optical filtering substrates, thereby the neighboring area that produces display panels is different with the gap of central area, causes producing the phenomenon that shows uneven (Mura) at the peripheral picture of display panels when showing.
Moreover, another object of the present invention is to provide a kind of display panels, suitable pattern that it can be by rete and layout are avoided as much as possible because conducting particles and separation material stack cause the breaking phenomena that the common electrode of two substrates and common electrode can not conducting.
In addition, another object of the present invention is to provide a kind of manufacture method of display panels, it can make display panels have better display quality.
The present invention proposes a kind of display panels, the neighboring area that it has the viewing area and is positioned at the periphery, viewing area, and wherein display panels comprises first substrate, second substrate, liquid crystal layer and frame glue.First substrate has first metal line, dielectric layer and contact electrode in the neighboring area, wherein dielectric layer covers first metal line, and dielectric layer is between first metal line and contact electrode, dielectric layer has first contact hole, and first contact holes exposing goes out first metal line, and contact electrode is electrically connected with first metal line by first contact hole of dielectric layer.Second substrate and first substrate are oppositely arranged accordingly.Liquid crystal layer is between first substrate and second substrate.Frame glue is arranged between first substrate and second substrate of neighboring area, and around around the liquid crystal layer, frame glue is arranged on the contact electrode, and frame glue comprises conducting particles, and wherein conducting particles is arranged in first contact hole and with contact electrode and contacts.
In one embodiment of this invention, above-mentioned dielectric layer comprises gate insulator and protective seam.And the degree of depth of the first above-mentioned contact hole for example is the thickness summation that equals gate insulator and protective seam substantially.Wherein, the thickness of above-mentioned gate insulator for example is 3300 dusts (angstrom, A) ± 330 dusts, and the thickness of protective seam for example is to be 2000 dusts ± 300 dusts substantially substantially.
In one embodiment of this invention, above-mentioned contact electrode for example is the inside surface that extends to first contact hole from the surface of dielectric layer, and is connected with first metal line in first contact hole.
In one embodiment of this invention, above-mentioned frame glue comprises a plurality of separation materials between first substrate and second substrate, and these separation materials support the gap between first substrate and second substrate and limit the substrate spacing.At this moment, the particle diameter of conducting particles for example is the summation that equals the substrate spacing and the first contact hole degree of depth substantially, and the size of separation material equals the substrate spacing substantially.In addition, the material of these separation materials for example is a glass fibre.
In one embodiment of this invention, the first above-mentioned substrate for example is a thin film transistor base plate, wherein thin film transistor base plate has the pixel of arrayed and the common electrode that extends to the neighboring area from the viewing area in the viewing area, and first metal line is the part that common electrode extends to the neighboring area.
In one embodiment of this invention, the second above-mentioned substrate has common electrode, and common electrode is connected with the contact electrode and first metal line on first substrate by conducting particles.In addition, second substrate can also comprise black matrix, and black matrix has second contact hole, and common electrode covers black matrix and extends to the inside surface of second contact hole, and the common electrode that is positioned at second contact hole is connected with the contact electrode that is positioned at first contact hole by conducting particles.At this moment, the particle diameter of conducting particles for example is the summation that equals the degree of depth of the degree of depth of substrate spacing, first contact hole and second contact hole substantially, and the size of separation material for example is to equal the substrate spacing substantially.
In one embodiment of this invention, the aperture of the first above-mentioned contact hole is 500 μ m～700 μ m substantially.
In one embodiment of this invention, the degree of depth of the first above-mentioned contact hole is 0.5 μ m～0.6 μ m substantially.
Particularly, this display panels comprises thin film transistor base plate, colored optical filtering substrates, liquid crystal layer and frame glue, this thin film transistor base plate and colored optical filtering substrates a determining deviation at interval are oppositely arranged, this liquid crystal layer is arranged between this thin film transistor base plate and the colored optical filtering substrates, this frame plastic clip is located between this thin film transistor base plate and colored optical filtering substrates, surrounds and encapsulate this liquid crystal layer; At frame glue dispensing area, metal line is arranged on this thin film transistor base plate, dielectric layer is arranged on this metal line and covers this metal line, on this dielectric layer, dig first contact hole, the aperture of this first contact hole for example is 500 μ m～700 μ m, the degree of depth for example is 0.5 μ m～0.6 μ m, and this first contact hole is corresponding to the implantation position of conducting particles, contact electrode is arranged on this dielectric layer, when utilizing the frame sticker to close two substrates, because conducting particles is to squeeze in the position corresponding to contact hole, therefore reduce corresponding to the conducting particles zone with corresponding to the difference in height in the separation material zone in the frame glue, thereby reduced the difference in height in gap, panel periphery and face plate center zone, more avoided because frame glue and conducting particles mix the possibility that the separation material that is used for the supporting substrate spacing when using in the conducting particles and frame glue is superimposed, make display panels periphery picture show that the phenomenon of uneven (Mura) is solved, and can avoid between the common electrode of the common electrode of first substrate and second substrate can not conducting breaking phenomena.
The present invention provides a kind of manufacture method of display panels in addition, the display panels neighboring area that has the viewing area and be positioned at the periphery, viewing area wherein, the manufacture method of this display panels comprises the following steps: at first, first substrate and second substrate are provided, and on first substrate, form first metal line.Then, form dielectric layer on first substrate, wherein dielectric layer covers first metal line.Afterwards, in the dielectric layer of neighboring area, form a plurality of first contact holes, wherein expose first metal line.Subsequently, form contact electrode on dielectric layer, wherein contact electrode extends to the inside surface of first contact hole from the surface of dielectric layer, and is electrically connected with first metal line in first contact hole.Then, at each first contact hole implantable conductive particle.Afterwards, at neighboring area coating frame glue and fit first substrate and second substrate, and solidify frame glue.
In one embodiment of this invention, the method for above-mentioned formation first metal line comprises exposure, development and etching.
In one embodiment of this invention, above-mentioned dielectric layer comprises gate insulator and protective seam, and the method for formation first contact hole for example comprises the following steps in gate insulator and protective seam.At first, form gate insulator on first substrate, wherein gate insulator covers first metal line.Then, on gate insulator, form second metal line.Afterwards, on first substrate, form protective seam, and protective seam covers second metal line and gate insulator.Subsequently, in the gate insulator of neighboring area and protective seam, form first contact hole.
In one embodiment of this invention, the method for above-mentioned formation second metal line comprises exposure, development and etching.
In one embodiment of this invention, the aperture of the first above-mentioned contact hole for example is 500 μ m～700 μ m.
In one embodiment of this invention, the degree of depth of the first above-mentioned contact hole is 0.5 μ m～0.6 μ m.
In one embodiment of this invention, the method for above-mentioned curing frame glue can be one of them of the roasting and air-set of irradiating ultraviolet light, heat.
In one embodiment of this invention, before fit first substrate and second substrate, can on second substrate, form black matrix and common electrode, wherein common electrode covers black matrix, make after the win substrate and second baseplate-laminating, the common electrode on second substrate is connected with contact electrode on first substrate by conducting particles.Furthermore, when formation should be deceived matrix, more comprise in the black matrix and form second contact hole, common electrode covers black matrix and extends to the inside surface of second contact hole, make after the win substrate and second baseplate-laminating, the common electrode that is positioned at second contact hole is connected with the contact electrode that is positioned at first contact hole by conducting particles.
In other words, the present invention also provides a kind of method of making this display panels, it comprises the steps: to provide thin film transistor base plate and colored optical filtering substrates, for example utilizes exposure, development, etching method to make first metal line on this thin film transistor base plate; And in one embodiment, for example on first substrate, make gate insulator, make it cover this first metal line; And for example utilize exposure, development, etching method on this gate insulator, to make second metal line; And can on this thin film transistor base plate, make protective seam, to cover this second metal line and gate insulator; Dielectric layer at panel periphery frame Jiao Qu is made a plurality of contact holes, and the predeterminated position of each contact hole is for to get the position ready with respect to conducting particles; On protective seam, make contact electrode, the implantable conductive particle; Coating frame glue and fit first substrate and second substrate solidify frame glue.
Compared with prior art, display panels of the present invention is by offering contact hole on the precalculated position of dielectric layer, and implantable conductive particle accordingly in the position of contact hole, not only has the advantage that improves the glass periphery utilization factor in the prior art, more solve in the prior art and to produce the problems that peripheral picture that difference in height caused shows inequality (Mura) because of the panel periphery zone is different with gap, face plate center zone, and in the solution prior art in the display panels common electrode of upper substrate can't with the problem of the smooth conducting of common electrode of infrabasal plate.
[description of drawings]
Fig. 1 is the floor map of available liquid crystal display panel.
Fig. 2 is an available liquid crystal display panel shown in Figure 1 sectional view along A-A '.
Fig. 3 is the partial enlarged drawing in display panels frame glue zone shown in Figure 2.
Fig. 4 A is the part section enlarged drawing in the display panels frame glue zone of first embodiment of the invention.
Fig. 4 B is the pixel of first embodiment of the invention and overlooking and the section partial enlarged drawing of frame glue zone.
Fig. 5 A is the making schematic flow sheet of the display panels of first embodiment of the invention.
Fig. 5 B is a kind of concrete method for making schematic flow sheet of the display panels of Fig. 4 A and Fig. 4 B.
Fig. 6 is the part section enlarged drawing in the display panels frame glue zone of second embodiment of the invention.
Fig. 7 is the making schematic flow sheet of display panels shown in Figure 6.
[embodiment]
The invention provides a kind of display panels and manufacture method thereof, its the panel periphery picture that the gap produced that can avoid the gap in panel periphery zone to be higher than the face plate center zone shows the phenomenon of uneven (Mura), more can suppress to result from the frame glue of display panels neighboring area conducting particles and support to produce stack, cause the defective that the common electrode of two substrates and common voltage can't conducting at same position with separation material; Below by specific embodiment it is described in detail.
First embodiment
Fig. 4 A is the part section enlarged drawing in frame glue 34 zones of display panels in the first embodiment of the invention.See also Fig. 4 A, the neighboring area 22 that display panels 20 has viewing area 21 and is positioned at 21 peripheries, viewing area, and display panels 20 comprises first substrate 31, second substrate 32, liquid crystal layer 33 and frame glue 34, and wherein first substrate 31 and second substrate 32 for example are thin film transistor base plate and colored optical filtering substrates respectively.The certain at interval substrate space D 0 of first substrate 31 and second substrate 32 is oppositely arranged, liquid crystal layer 33 is arranged between first substrate 31 and second substrate 32, frame glue 34 is folded in 32 of first substrate 31 and second substrates, be surrounded on liquid crystal layer 33 around, to surround and encapsulated liquid crystal layer 33.Be provided with the separation material 35 that supports usefulness in the frame glue 34, and in frame glue 34 zones, first metal line 36 is arranged on first substrate 31,37 of dielectric layers cover on first metal line 36.
Please continue the A with reference to Fig. 4, first substrate 31 22 has first metal line 36, dielectric layer 37 and contact electrode 39 in the neighboring area, and wherein dielectric layer 37 covers first metal line 36, and dielectric layer 37 is between first metal line 36 and contact electrode 39.Specifically, in neighboring area 22, dielectric layer 37 has the first contact hole H1 that exposes first metal line 36 at ad-hoc location, make contact electrode 39 be electrically connected with first metal line 36 by the first contact hole H1 of dielectric layer 37, specifically, contact electrode 39 is the inside surfaces that extend to the first contact hole H1 from the surface of dielectric layer 37, and directly contacts with first metal line 36 in the first contact hole H1.
In other words, in the neighboring area 22 of first substrate, the thicknesses of layers beyond the first contact hole H1 is greater than the thicknesses of layers in the first contact hole H1.Shown in Fig. 4 A, frame glue 34 comprises conducting particles 40 and a plurality of separation material 35, and be arranged on the contact electrode 39, wherein conducting particles 40 is arranged among the first contact hole H1 and with contact electrode 39 and contacts, and above-mentioned ad-hoc location is predetermined implantation place of conducting particles 40, and these separation materials 35 support the gap between first substrate and second substrate and are used to limit substrate space D 0, and its material for example is a glass fibre.In other words, the size d2 of separation material 35 equals substrate space D 0 substantially, and the particle diameter d1 of conducting particles 40 for example is the summation that equals the substrate space D 0 and the first contact hole H1 depth D 1 substantially, and when conducting particles was ball-shaped substantially, the particle diameter of so-called conducting particles for example was a diameter herein.Therefore, the display panels 20 of present embodiment suitably is arranged at larger-size conducting particles 40 in the frame glue 34 among the first thin contact hole H1 of thicknesses of layers, and the zone beyond being arranged at size less clearance thing 35 in the frame glue 34 among the first thicker contact hole H1 of thicknesses of layers, thus, for second substrate that fits in the first substrate subtend, the zone of the first substrate upper ledge glue, 34 corresponding conducting particless 40 and the zone of corresponding separation material 35 flush substantially, in other words, the gap that is positioned at middle section in the display panels is basic consistent with the gap that is positioned at the neighboring area, therefore can avoid display panels periphery picture to show uneven problem, improve the display quality of display panels.
Particularly, Fig. 4 B is the pixel of first embodiment of the invention and overlooking and the section partial enlarged drawing of frame glue zone, and wherein similar elements and Fig. 4 A indicate same-sign.Please refer to Fig. 4 B, similar first substrate 31 has the pixel 23 of arrayed and 21 common electrodes 26 that extend to neighboring area 22 from the viewing area in viewing area 21, when transistor 28 anergies of each pixel 23 in correspondence, can stablize its data voltage by the common electrode 26 of correspondence, and the common electrode 26 of corresponding each pixel 23 is electrically connected to each other on last first substrate 31.In the present embodiment, first metal line 36 that is come out by the first contact hole H1 for example is the part that common electrode 26 extends to neighboring area 22.Moreover, in the present embodiment, first metal line 36, common electrode 26 for example be with transistor 28 in grid 28G be same rete, and can be with being made with mask process, and contact electrode 39 for example is to be same rete with pixel electrode 29, so contact electrode 39 for example can be with being made with mask process with pixel electrode 29.
What certainly, the deviser also can look selected size difference between conducting particles 40 and the separation material 35, kind that process conditions decide dielectric layer, thickness, first contact hole offers size, position.For example, in the present embodiment, dielectric layer 37 comprises gate insulator 371 and protective seam 372, and the degree of depth of the first contact hole H1 for example is the thickness summation that equals gate insulator 371 and protective seam 372 substantially.Wherein the thickness of gate insulator 371 for example is 3300 dusts ± 330 dusts (A); the thickness of protective seam 372 for example is 2000 dusts ± 300 dusts (A); and the aperture of the first contact hole H1 for example is a diameter is 500 μ m～700 μ m substantially; the degree of depth for example is 0.5 μ m～0.6 μ m substantially; so, can keep the display panels better display quality.
On the other hand, in the present embodiment, have black matrix 41 and covering common electrode 42 thereon on second substrate 32.Thus, common electrode 42 is connected with the contact electrode 39 and first metal line 36 on first substrate 31 by conducting particles 40.In other words, contact electrode 39 on the common electrode on second substrate 32 42, first substrate 31 and first metal line 36 (common electrode 26) are equipotential.And, the structural design of the display panels 20 of present embodiment can effectively prevent because separation material 35 and conducting particles 40 in the frame glue 34 are overlapping at same position, make the gap produce Overlay, cause the breaking phenomena (being illustrated in Fig. 3) that the common electrode 42 of the common electrode 26 of first substrate 31 and second substrate 32 can't conducting.
Therefore, compared to the available liquid crystal display panel, the display panels 20 of present embodiment is by forming the first contact hole H1 on dielectric layer 37, and then larger-size conducting particles 40 implanted among the first contact hole H1 accordingly, to avoid the existing uneven problem that shows, in other words, the display panels 20 of present embodiment is on the surface of first substrate 31, utilize rete to form different with other region height in the specific region, with the size difference between conducting particles 40 in the compensation block glue 34 and the separation material 35, thus, the rete of panel 20 peripheries and panel inside can produce difference in thickness so that can be eliminated because of the difference in size between conducting particles 40 and the separation material 35, effectively avoid when frame glue 34 and conducting particles 40 mixing uses, support in conducting particles 40 and the frame glue 34 effectively solves display panels periphery picture and shows uneven problem with the possibility of separation material 35 stacks.In addition, utilize above-mentioned structural design, can effectively prevent between the common electrode 42 of the common electrode 26 of first substrate 31 and second substrate 32 because of frame glue 34 intermediate gap things 35 and conducting particles 40 same position produce stack cause can't conducting phenomenon.
With Fig. 4 A and Fig. 4 B is example, in this method for making of enumerating a kind of display panels 20, please refer to Fig. 5 A and Fig. 5 B, hereinafter will illustrate in the lump.Fig. 5 A is a kind of method for making schematic flow sheet of display panels in one embodiment of the invention, Fig. 5 B is a kind of concrete method for making schematic flow sheet of the display panels of Fig. 4 A and Fig. 4 B, for convenience of description, member identical with Fig. 4 A, 4B among Fig. 5 A, the 5B is then represented with same-sign, repeats no more.
Seeing also Fig. 5 A, is the making schematic flow sheet of a kind of display panels in the first embodiment of the present invention, and the making flow process of this display panels may further comprise the steps.
At first, please refer to step S10, first substrate and second substrate are provided, and on first substrate, form first metal line.Then, please refer to step S20, form dielectric layer on first substrate, wherein dielectric layer covers first metal line.Afterwards, please refer to step S30, in the dielectric layer of neighboring area, form a plurality of first contact holes, wherein expose first metal line.Subsequently, please refer to step S40, form contact electrode on dielectric layer, wherein contact electrode extends to the inside surface of first contact hole from the surface of dielectric layer, and is electrically connected with first metal line in first contact hole.Then, please refer to step S50, at each first contact hole implantable conductive particle.Afterwards, please refer to step S90,, and solidify frame glue at neighboring area coating frame glue and fit first substrate and second substrate.
More specifically, please consulting Fig. 5 B again, is the concrete making schematic flow sheet of display panels 20 in the first embodiment of the present invention, and the making flow process of this display panels 20 may further comprise the steps.
Please be simultaneously with reference to Fig. 5 B and Fig. 4 B, at first, please refer to step S10, first substrate 31 and second substrate 32 are provided, wherein this first substrate 31 and second substrate 32 for example are thin film transistor base plate and colored optical filtering substrates, and first metal line 36 is set on this first substrate 31.The method of wherein making first metal line 36 for example is to plate the first metal layer earlier on first substrate 31, then, is coated with photoresistance on this first metal layer, and forms this first metal line 36 via steps such as exposure, development, etching, removing photoresistances.As described above, in this step, also can form grid 28G and the common electrode 26 that is positioned at viewing area 21 simultaneously, repeat no more in this.
Then, form dielectric layer 37 on first substrate 31, wherein dielectric layer 37 covers first metal line 36.As described above, in the present embodiment, dielectric layer 37 comprises gate insulator 371 and protective seam 372, and wherein the method that forms in gate insulator 371 and the protective seam 372 on first metal line 36 for example comprises the following steps.
Carry out step S22, form gate insulator 371 earlier on this first substrate 31, make this gate insulator 371 cover this first metal line 36, in this step, gate insulator 371 is while cover gate 28G also.
Then, please carry out step S24 simultaneously with reference to Fig. 5 B and Fig. 4 B, in the present embodiment, form second metal line on gate insulator 371, wherein second metal line for example is as the source electrode 28S in the transistor 28 of Fig. 4 B, drain electrode 28D and data line 52.In addition, second metal line for example is that the mode that is vertical intersects with first metal line 36, wherein in the viewing area 21 respectively with first metal line 36 and with the identical rete of second metal line for example be respectively sweep trace 51 and data line 52, and, in the present embodiment, in this step, also can form source/drain and the data line that is positioned at viewing area 21 simultaneously.The method of making second metal line for example is to plate second metal level earlier on gate insulator 371, then, is coated with photoresistance on this second metal level, and forms this second metal line via steps such as exposure, development, etching, removing photoresistances.
Afterwards, shown in Fig. 5 B and Fig. 4 B, carry out step S26, on first substrate 31, form protective seam 372, and protective seam 372 covers second metal line and gate insulator 371.Subsequently, carry out step S30, in the gate insulator 371 of neighboring area 22 and protective seam 372, form the first contact hole H1.On the dielectric layer 37 in frame glue 34 zones in the first substrate periphery zone 22, form a plurality of first contact hole H1, and the position of the first contact hole H1 is corresponding to the predetermined implantation position of conducting particles 40, wherein the aperture of the first contact hole H1 for example is 500 μ m～700 μ m, and the degree of depth for example is 0.5 μ m～0.6 μ m.In addition, in the present embodiment, in this step, also can form simultaneously and be positioned at the contact hole H3 that viewing area 21 is used to expose drain electrode 28D.
Then; carry out step S40; on this protective seam 372, form contact electrode 39; the surface of contact electrode 39 self-insurance sheaths 372 wherein; extend to the inside surface of the first contact hole H1; and in the first contact hole H1, be electrically connected with first metal line 36; as described above; in the present embodiment; contact electrode 39 is same rete with pixel electrode 29 for example; and can form the pixel electrode 29 that is positioned at viewing area 21 in this step simultaneously, wherein pixel electrode 29 sees through contact hole H3 and is electrically connected with drain electrode 28D.
Afterwards, carry out step S50, conducting particles 40 is implanted among the first contact hole H1.And, before the step of fitting, carry out step S60, on second substrate 32, form black matrix 41, and carry out step S80, on the black matrix 41 of second substrate 32, form the common electrode 42 that covers black matrix 41.
And, carry out step S90, the 22 coating frame glue 34 in the neighboring area, first substrate 31 and second substrate 32 are fitted, and curing frame glue 34, make after win substrate 31 and second substrate 32 fit, the common electrode 42 on second substrate 32 is connected with contact electrode 39 on first substrate 31 by conducting particles 40.In detail, under vacuum condition, with the pressing of aliging with second substrate 32 of first substrate 31, reach designing requirement up to both substrate space D 0, and the contact electrode 39 of further guaranteeing first substrate 31 is by conducting particles 40 and with after the common electrode 42 of this second substrate 32 is electrically connected, sclerosis frame glue 34, wherein the curing of this frame glue 34 can be enumerated irradiating ultraviolet light, heat is roasting and air-set etc., but the present invention is not as limit.After above-mentioned steps, the justified margin of the periphery edge of frame glue 34 and first substrate 31 and second substrate 32 is disposed at liquid crystal layer 33 in the above-mentioned liquid crystal accommodation space and with it and is packaged in it, to form display panels 20.
From the above, the manufacture method of display panels of the present invention, can effectively avoid display panels periphery picture to show uneven, improve the panel display quality, and this manufacture method can be arranged in pairs or groups with the making flow process of reality, and need not increase extra mask process, and therefore can control the increase of production cost, reduce the cost of product.
Second embodiment
Fig. 6 is the part section enlarged drawing in the frame glue zone of second embodiment of the invention display panels.Please refer to Fig. 6, the display panels 30 and first embodiment of second embodiment are similar, just on second substrate 32 of the display panels 30 of present embodiment, black matrix 41 is more offered the second contact hole H2, common electrode 42 covers black matrix 41 and extends to the inside surface of the second contact hole H2, and the common electrode 42 that is positioned at the second contact hole H2 is connected with the contact electrode 39 that is positioned at the first contact hole H1 by conducting particles 40.
Furthermore, the position of offering of the second contact hole H2 of black matrix 41 is provided with respect to the position of the first contact hole H1, and as described in first embodiment, the aperture of the second contact hole H2 and the degree of depth can design according to the demand of product category and concrete technology.On black matrix 41, common electrode 42 is set, make common electrode 42 cover the inside surface of the black matrix 41 and the second contact hole H2, in other words, in the present embodiment, the particle diameter d1 of conducting particles 40 for example is the summation that equals the depth D 2 of the depth D 1 of substrate space D 0, the first contact hole H1 and the second contact hole H2 substantially, and the size d2 of separation material 35 equals substrate space D 0 substantially.Therefore, larger-size conducting particles 40 can be located between the first contact hole H1 and the second contact hole H2 in the frame glue 34, and size less clearance thing 35 can be located in the first contact hole H1 and second contact hole H2 zone in addition in the frame glue 34, thus, for first substrate 31 and second substrate 32, therefore utilization can avoid display panels 30 peripheral pictures to show uneven problem in the zones of different substrate space D 0 of modulation conducting particles 40 predeterminated positions and separation material 35 predeterminated positions accordingly.
The structure of disclosed display panels and manufacture method thereof, can be preferable dwindle conducting particles 40 and support with the difference in height between the separation material, make the difference in height between the gap of the gap of panel periphery and panel inside reduce, effectively solved the phenomenon that the display panels periphery picture that exists in the prior art shows uneven (Mura).On the other hand, the display panels of present embodiment also can effectively prevent the breaking phenomena that the common electrode 42 of the common electrode 26 of first substrate 31 and second substrate 32 can't conducting.
Fig. 7 is a kind of method for making schematic flow sheet of the display panels of Fig. 6.See also Fig. 7, in the technology of reality, the method for making of the display panels 30 of present embodiment and the display panels 20 of aforementioned first embodiment are similar, and same steps as is represented with same numeral.Just before the step S80 of the common electrode 42 that forms second substrate 32, more comprise the technology of earlier black matrix 41 being carried out patterning, as the step S70 among Fig. 7, form the aforesaid second contact hole H2 on the position with the corresponding first contact hole H1 in black matrix 41, and after common electrode 42 forms, common electrode 42 can extend to the inside surface of the second contact hole H2, and all the other technologies and first embodiment are similar, repeat no more.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can carry out various modifications to the present invention after reading present patent application under the situation that does not break away from the spirit and scope of the present invention.
Claims (24)
1. display panels, the neighboring area that has the viewing area and be positioned at this periphery, viewing area is characterized in that: this display panels comprises:
First substrate, have first metal line, dielectric layer and contact electrode in this neighboring area, wherein this dielectric layer covers this first metal line, and this dielectric layer is between this first metal line and this contact electrode, this dielectric layer has first contact hole, and this first contact holes exposing goes out this first metal line, and this contact electrode is electrically connected with this first metal line by this first contact hole of this dielectric layer;
Second substrate is oppositely arranged accordingly with this first substrate;
Liquid crystal layer is between this first substrate and this second substrate; And
Frame glue, be arranged between this first substrate and this second substrate of neighboring area, and around around this liquid crystal layer, this frame glue is arranged on this contact electrode, and this frame glue comprises conducting particles, and wherein this conducting particles is arranged in this first contact hole and with this contact electrode and contacts.
2. display panels as claimed in claim 1 is characterized in that: this dielectric layer comprises gate insulator and protective seam.
3. display panels as claimed in claim 2 is characterized in that: the degree of depth of this first contact hole equals the thickness summation of this gate insulator and this protective seam.
4. display panels as claimed in claim 2 is characterized in that: the thickness of this gate insulator is 3300 dusts ± 330 dusts.
5. display panels as claimed in claim 2 is characterized in that: the thickness of this protective seam is 2000 dusts ± 300 dusts.
6. display panels as claimed in claim 1 is characterized in that: this contact electrode extends to the inside surface of this first contact hole from the surface of this dielectric layer, and is connected with this first metal line in this first contact hole.
7. display panels as claimed in claim 1, it is characterized in that: this frame glue comprises a plurality of separation materials, between this first substrate and this second substrate, these a plurality of separation materials support the gap between this first substrate and this second substrate and limit the substrate spacing.
8. display panels as claimed in claim 7 is characterized in that: the particle diameter of this conducting particles equals the summation of substrate spacing and this first contact hole degree of depth, and the size of these a plurality of separation materials equals this substrate spacing.
9. display panels as claimed in claim 7 is characterized in that: the material of these a plurality of separation materials is a glass fibre.
10. display panels as claimed in claim 1, it is characterized in that: this first substrate is a thin film transistor base plate, this thin film transistor base plate in this viewing area, have the pixel of arrayed and certainly this viewing area extend to the common electrode of neighboring area, and this first metal line extends to the part of this neighboring area for this common electrode.
11. display panels as claimed in claim 1 is characterized in that: this second substrate has common electrode, and this common electrode is connected with this contact electrode and this first metal line on this first substrate by this conducting particles.
12. display panels as claimed in claim 11, it is characterized in that: this second substrate more comprises black matrix, and should have second contact hole by black matrix, this common electrode covers this black matrix and extends to the inside surface of this second contact hole, and this common electrode that is positioned at this second contact hole is connected with the contact electrode that is positioned at this first contact hole by this conducting particles.
13. display panels as claimed in claim 12 is characterized in that: the particle diameter of this conducting particles equals the summation of the degree of depth of the degree of depth of substrate spacing, this first contact hole and this second contact hole, and the size of these a plurality of separation materials equals the substrate spacing.
14. display panels as claimed in claim 1 is characterized in that: the aperture of this first contact hole is 500 μ m～700 μ m.
15. display panels as claimed in claim 1 is characterized in that: the degree of depth of this first contact hole is 0.5 μ m～0.6 μ m.
16. the manufacture method of a display panels, this display panels neighboring area of having the viewing area and being positioned at this periphery, viewing area wherein, it is characterized in that: the manufacture method of this display panels comprises:
First substrate and second substrate are provided, and on this first substrate, form first metal line;
Form dielectric layer on this first substrate, wherein this dielectric layer covers this first metal line;
Form a plurality of first contact holes in this dielectric layer of this neighboring area, wherein these a plurality of first contact holes exposing go out this first metal line;
Form contact electrode on dielectric layer, wherein this contact electrode extends to the inside surface of this first contact hole from the surface of this dielectric layer, and is electrically connected with this first metal line in this first contact hole;
At this first contact hole implantable conductive particle respectively; And
At this neighboring area coating frame glue and fit this first substrate and this second substrate, and solidify this frame glue.
17. the manufacture method of display panels as claimed in claim 16 is characterized in that: the method that forms this first metal line comprises exposure, development and etching.
18. the manufacture method of display panels as claimed in claim 16 is characterized in that: this dielectric layer comprises gate insulator and protective seam, and the method for formation first contact hole comprises in this gate insulator and this protective seam:
Form gate insulator on this first substrate, wherein this gate insulator covers this first metal line;
On this gate insulator, form second metal line;
On first substrate, form protective seam, and this protective seam covers this second metal line and this gate insulator; And
In this gate insulator of this neighboring area and this protective seam, form these a plurality of first contact holes.
19. the manufacture method of display panels as claimed in claim 18 is characterized in that: the method that forms this second metal line comprises exposure, development and etching.
20. the manufacture method of display panels as claimed in claim 16 is characterized in that: the aperture of this first contact hole is 500 μ m～700 μ m.
21. the manufacture method of display panels as claimed in claim 16 is characterized in that: the degree of depth of this first contact hole is 0.5 μ m～0.6 μ m.
22. the method for making of display panels as claimed in claim 16 is characterized in that: the method for solidifying this frame glue comprises irradiating ultraviolet light, heat is roasting and one of them of air-set.
23. the manufacture method of display panels as claimed in claim 16, it is characterized in that: before fit this first substrate and this second substrate, on this second substrate, form black matrix and common electrode, wherein this common electrode covers and should deceive matrix, make after this first substrate and this second baseplate-laminating that this common electrode on this second substrate is connected with this contact electrode on this first substrate by this conducting particles.
24. the manufacture method of display panels as claimed in claim 23, formation it is characterized in that: when should be deceived matrix, more comprise and form second contact hole in this black matrix, this common electrode covers this black matrix and extends to the inside surface of this second contact hole, make that this common electrode that is positioned at this second contact hole is connected with the contact electrode that is positioned at this first contact hole by this conducting particles after this first substrate and this second baseplate-laminating.
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| CN200910108395A CN101699335A (en) | 2009-06-24 | 2009-06-24 | Liquid crystal display panel and manufacturing method thereof |
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| CN200910108395A CN101699335A (en) | 2009-06-24 | 2009-06-24 | Liquid crystal display panel and manufacturing method thereof |
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| CN200910108395A Pending CN101699335A (en) | 2009-06-24 | 2009-06-24 | Liquid crystal display panel and manufacturing method thereof |
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Application publication date: 20100428 |