CN102096245A

CN102096245A - Substrate, method for forming sealing patterns, and method for manufacturing liquid crystal display device

Info

Publication number: CN102096245A
Application number: CN2009102654038A
Authority: CN
Inventors: 丁东澈
Original assignee: Top Engineering Co Ltd
Current assignee: Top Engineering Co Ltd; LG Display Co Ltd
Priority date: 2009-12-15
Filing date: 2009-12-28
Publication date: 2011-06-15
Also published as: KR20110068195A; TW201120536A; KR101118468B1

Abstract

The invention discloses a substrate, comprising a plurality of panel districts at intervals on the substrate and provided with sealing patterns formed via using a coating machine, the sealing patterns comprise: a first sealing pattern part formed at a first side edge of each panel district along a first axis; a second sealing pattern part formed at a second side edge of each panel district along the first axis; a third sealing pattern part formed at a third side edge of each panel district via several coating operations and along a second axis perpendicular to the first axis; and a fourth sealing pattern part formed at a fourth side edge of each panel district via several coating operations along the second axis, preventing forming of sealing patterns from polluting a nozzle of the coating machine. The invention also provides a method for forming sealing patterns, and a method for manufacturing a liquid crystal display device via using the above method.

Description

The method of substrate, the method that forms seal pattern and manufacturing LCD device

Technical field

The present invention relates to a kind of the have substrate of seal pattern, a kind of method and a kind of method of utilizing said method to make LCD (LCD) device that forms seal pattern.More particularly, the present invention relates to a kind of substrate, wherein when forming seal pattern, prevent to pollute the nozzle of coating machine, relate to a kind of sealing method of patterning and a kind of method of utilizing said method to make the LCD device of forming in addition with seal pattern.

Background technology

Along with the development of information society, need a large amount of display equipments.Therefore, researching and developing various types of flat-panel monitors, for example LCD, plasma display (PDP), electroluminescent display (ELD), vacuum fluorescent display (VFD) or the like.

Especially, utilize fast-developing semiconductor technology thereby have a LCD that improves performance comparatively favourable, therefore be mainly used at present and substitute traditional cathode ray tube (CRT) because of its high quality graphic, small size, light weight and low-power consumption.

Therefore, not only be widely used in small sized product as the LCD of one of flat panel display types such as portable mobile phone, PDA(Personal Digital Assistant) and portable media player (PMP), and be applied to such as computer monitor and in response to broadcast singal the TV televisor of display image.

LCD a kind ofly is transferred to each liquid crystal cells of arranging with matrix form by comprising the data of image information signal, and the transmittance of therefore controlling liquid crystal cells shows the device of desired image.

This LCD comprises: have a plurality of pattern of pixels thin film transistor (TFT) (TFT) substrate, have the colored filter substrate of color filter layers and be arranged between TFT substrate and the colored filter substrate and whether decision transmits the liquid crystal layer of light in response to the electric signal that is applied.

Particularly, the TFT substrate comprises a plurality of gate lines along a direction setting, a plurality of data lines of arranging perpendicular to above-mentioned a plurality of gate lines, is respectively formed at a plurality of pixel electrodes on the pixel region that is limited by gate line that crosses one another and data line and switches and so data line signal is transferred to a plurality of TFT of respective pixel electrode in response to the gate line signal.

Colored filter substrate comprises black matrix", R-G-B (RGB) color filter layers that is used for Show Color and the common electrode that is used for display image that is used to stop that light leaks between the pixel region.

TFT substrate and colored filter substrate are by means of the sealant sealing that forms at its peripheral region.It is main according to the coating process that uses coating machine to form sealant on substrate.

Coating process is a kind of method of injection type, and it can be only forms seal pattern at desired locations, make utilize the coating machine that is filled with sealant based on the syringe principle under predetermined pressure at the Desired Height place with on desired region, form seal pattern.

Fig. 1 illustrates the substrate that comprises a plurality of panel area P1～P6, and wherein the embodiment according to conventional art forms seal pattern 3.

1. → 4. seal pattern 3 forms along predetermined direction along the edge of concrete panel area (for example P1), and also is formed in the same manner on remaining panel district P2～P6.

Like this, utilizing range-viewfinder to keep the constant height and the maintenance sealant of the coating machine nozzle of each panel area to be coated with under the condition of pressure and constant airspeed the coating sealant.

Yet, this classic method is disadvantageous, this is because the seal pattern of each panel area P1～P6 3 independent formation, therefore should all reset coating pressure and coating speed at the starting point 5 and halt 7 places of the seal pattern 3 of each panel area P1～P6 at every turn, thereby make us having prolonged the working time dissatisfiedly and having reduced throughput rate.

Therefore, in order to shorten the sealant coating time, utilize the classic method that is used to form seal pattern as shown in Figure 2.

Fig. 2 illustrates the substrate 1 that comprises a plurality of panel area P1～P6, and wherein seal pattern 3 is that another embodiment according to conventional art forms.

Seal pattern 3 comprises vertical line Y-1～Y-6 and x wire X-1～X-4, and these lines are all by utilizing coating operation of every line to form.

For example, under the situation that at first forms x wire X-1～X-4, the coating operation that utilization is contained in the right drift angle scope from the left drift angle of a panel area (for example P1) to another panel area (for example P3) forms x wire X-1, and corresponding x wire X-2～X-4 forms in order by a coating operation.

Alternatively, have in use under the situation of coating machine of a plurality of nozzles, x wire X-1～X-4 can form simultaneously.

Thereafter, to form vertical line Y-1 to a coating operation in the left base angle scope of another panel area (for example P4) by containing from the left drift angle of panel area (for example P1), and corresponding vertical line Y-2～Y-6 forms vertical line Y-1～Y-6 by the mode that a coating operation forms in order.

Alternatively, have in use under the situation of coating machine of a plurality of nozzles, can form vertical line Y-1～Y-6 simultaneously.

Alternatively, vertical line Y-1～Y-6 can be at first formed, x wire X-1～X-4 can be formed then.

Yet when TFT substrate and colored filter substrate are engaged with each other when constituting LCD, established seal pattern 3 is extruded between two substrates and expands.

Fig. 3 a illustrates two substrates and engages the seal pattern 3 that is formed at before on the substrate 1, and Fig. 3 b illustrates two substrates and engages seal patterns 3 afterwards.

Shown in Fig. 3 a and 3b, when two substrates engaged, the seal pattern 3 of Fig. 3 b is expanded and changed over to the seal pattern 3 of Fig. 3 a.Particularly, the seal pattern 3 of Fig. 3 a with about 200 μ m width and 50 μ m height changes over the seal pattern 3 of Fig. 3 b with about 1000 μ m width and 7 μ m height.

The expansion of seal pattern 3 can be serious further on the represented cross section of the circle of Fig. 2, therefore worries the viewing area that seal pattern 3 can enter LCD.

Cross section is owing to be coated with sealant twice, so its seal pattern 3 is thicker than other parts.Therefore, when two substrates engage, the problem of the seal pattern 3 of LCD may appear evenly not forming.

In addition, (x wire X-1～X-4 or vertical line Y-1～Y-6) form second axial patterns (under the situation of vertical line Y-1～Y-6 or x wire X-1～X-4) then utilizing said method to form first axial patterns, when forming second axial patterns, by cross section the time,, therefore may make us dissatisfied ground contamination nozzle because first axial patterns forms.

Summary of the invention

Therefore, at the problems referred to above of running in the prior art the present invention is proposed, and the invention is intended to provide a kind of substrate with seal pattern, wherein eliminated the cross section of seal pattern, therefore need not to worry seal pattern and after two substrates that constitute the LCD device engage, enter the viewing area, a kind of sealing method of patterning and a kind of method of utilizing said method to make the LCD device of forming is provided in addition.

The present invention also provides a kind of substrate with seal pattern, wherein eliminated the cross section of seal pattern, therefore make and after two substrates that constitute the LCD device engage, to form even seal pattern, a kind of sealing method of patterning and a kind of method of utilizing said method to make the LCD device of forming is provided in addition.

The present invention also provides a kind of substrate with seal pattern, wherein the overlapping of seal pattern after two substrates that constitute the LCD device engage is minimized, therefore prevented the seal pattern thickening, a kind of sealing method of patterning and a kind of method of utilizing said method to make the LCD device of forming is provided in addition.

The present invention also provides a kind of substrate with seal pattern, has wherein prevented to pollute the nozzle of coating machine, and a kind of sealing method of patterning and a kind of method of utilizing said method to make the LCD device of forming is provided in addition.

One aspect of the present invention provides a kind of substrate, it comprises a plurality of panel areas that are spaced apart from each other and has the formed seal pattern of the coating machine of utilization on substrate, seal pattern comprises: the first seal pattern part, on it is formed at each first side in a plurality of panel areas along first axle; The second seal pattern part is on it is formed at each second side in a plurality of panel areas along first axle; The 3rd seal pattern part, it is along utilize several coating operations to be formed on each the 3rd side in a plurality of panel areas perpendicular to second axis of first axle; And the 4th seal pattern part, it utilizes several coating operations to be formed on each the four side in a plurality of panel areas along second axis.

Aspect this, the length weak point of first side, second side, the 3rd side or the four side of each in first seal pattern part, second seal pattern part, the 3rd seal pattern part or the 4th seal pattern part in comparable a plurality of panel areas corresponding of the length of at least one with it.

Aspect this, each the length of the 3rd side that is formed in the comparable a plurality of panel areas of length of the 3rd seal pattern part on each the 3rd side in a plurality of panel areas is short, and each the length of four side that is formed in the comparable a plurality of panel areas of length of the 4th seal pattern part on each the four side in a plurality of panel areas is short.

Aspect this, can form the space between first seal pattern part and the 3rd seal pattern part, between first seal pattern part and the 4th seal pattern part, between second seal pattern part and the 3rd seal pattern part or between second seal pattern part and the 4th seal pattern part.

Aspect this, first seal pattern of a plurality of panel areas part or second seal pattern part can utilize a coating operation to form, and the quantity that perhaps is used to form the coating operation of first seal pattern part of a plurality of panel areas or second seal pattern part can be chosen to be with the quantity of the panel area of locating along the line of first axle and equate.

Aspect this, the quantity that is used to form the coating operation of the 3rd seal pattern part of a plurality of panel areas or the 4th seal pattern part can be chosen to be with the quantity of the panel area of locating along the line of second axis and equate.

The present invention provides a kind of method that forms seal pattern on the other hand, it utilizes coating machine to form seal pattern on substrate, substrate comprises a plurality of panel areas that are spaced apart from each other thereon, and this method comprises: form each the seal pattern of first side in a plurality of panel areas along first axle; Form each the seal pattern of second side in a plurality of panel areas along first axle; Along utilize several coating operations to form each the seal pattern of the 3rd side in a plurality of panel areas perpendicular to second axis of first axle; And utilize several coating operations to form each the seal pattern of four side in a plurality of panel areas along second axis.

Aspect this, the length of at least one in the seal pattern of the four side of the seal pattern of the 3rd side of the seal pattern of the second side of each in the seal pattern of the first side of each in a plurality of panel areas, a plurality of panel area, each in a plurality of panel area or each in a plurality of panel area, the length of first side, second side, the 3rd side or the four side of each in comparable a plurality of panel areas corresponding with it is short.

Aspect this, the length of the 3rd side of each in the comparable a plurality of panel areas of the length of the seal pattern of the 3rd side of each in a plurality of panel areas is short, and each the length of four side in each the comparable a plurality of panel areas of length of seal pattern of four side in a plurality of panel area is short.

Aspect this, can form the space between the seal pattern of the seal pattern of first side and the 3rd side, between the seal pattern of the seal pattern of first side and four side, between the seal pattern of the seal pattern of second side and the 3rd side or between the seal pattern of the seal pattern of second side and four side.

Aspect this, can utilize a coating to operate the step of carrying out the seal pattern that forms the first side or the step that forms second seal pattern of second side; Perhaps, the quantity of coating operation that is used to form the seal pattern of the seal pattern of first side or second side can be chosen to be with the quantity of the panel area of locating along the line of first axle and equate.

Aspect this, the quantity of coating operation that is used to form the seal pattern of the seal pattern of the 3rd side or four side can be chosen to be with the quantity of the panel area of locating along the line of second axis and equate.

Aspect this, can be under nozzle height, coating speed or the unaltered condition of coating pressure or under the condition of nozzle height, coating speed or coating pressure change, the step of the step of the seal pattern of execution formation first side or the seal pattern of formation second side.

Aspect this, can be under the condition of nozzle height, coating speed or coating pressure change, carry out the step of the seal pattern that forms the 3rd side or form the step of the seal pattern of four side.

The present invention provides a kind of method of making LCD device on the other hand, and this method comprises: prepare first substrate and second substrate, first substrate is included in a plurality of panel areas that are spaced apart from each other on first substrate; Utilize the method for above-mentioned formation seal pattern on first substrate, to form seal pattern; First substrate and second substrate are engaged with each other, and seal pattern afterwards hardens; And first substrate that will be engaged with each other becomes in a plurality of panel areas each with second substrate cut.

Aspect this, this method can further comprise liquid crystal is dripped on first substrate or second substrate.

Description of drawings

From following detailed description in conjunction with the accompanying drawings, will more be expressly understood the features and advantages of the present invention, wherein:

Fig. 1 illustrates and comprises a plurality of panel areas and the substrate that has according to the formed seal pattern of an embodiment of conventional art;

Fig. 2 illustrates and comprises a plurality of panel areas and the substrate that has according to the formed seal pattern of another embodiment of conventional art;

Fig. 3 illustrates two substrates that constitute the LCD device to engage before and the view of seal pattern afterwards;

Fig. 4 illustrates the stereographic map that is used to form the coating machine example of seal pattern according to of the present invention;

Fig. 5 is the enlarged drawing of the supporting member of Fig. 4;

Fig. 6 is the stereographic map of the coater head of Fig. 4;

Fig. 7 A to Fig. 7 E is the plan view from above that illustrates in order according to the method that is used to form seal pattern of first embodiment of the invention;

Fig. 8 is the enlarged drawing by the represented part of the circular dashed line of Fig. 7 E;

Fig. 9 illustrates the schematic cross section of utilization according to the formed LCD device of the method for formation seal pattern of the present invention;

Figure 10 A to 10E is the plan view from above that illustrates in order according to the method that is used to form seal pattern of second embodiment of the invention; And

Figure 11 is the enlarged drawing by the represented part of the circular dashed line of Figure 10 E.

Embodiment

Embodiments of the present invention hereinafter are described in detail in detail with reference to the accompanying drawings.At this, proposing embodiments of the present invention only is to explain for example, and should not be construed restriction the present invention.

Fig. 4 illustrates the stereographic map that is used to form the coating machine example of seal pattern according to of the present invention.

Referring to Fig. 4, coating machine 100 comprises framework 110, saddle 120, a supporting member 130, coater head 140, guide unit 150 and controller (not shown).

Saddle 120 is arranged on the framework 110, makes can to place on the saddle 120 by seat from the substrate S of framework 110 1 side supplies.

Saddle 120 can move horizontally along X or Y-axis by means of the actuator (not shown), and comprises the rotating driver (not shown) that is used to rotate the substrate S that seat puts.

Supporting member 130 is provided with across crossing saddle 120.

Supporting member 130 extends along X-direction, and two end is supported on the framework 110.

Supporting member 130 can move horizontally along Y direction by means of the actuator (not shown), and comprises the guide unit 150 that can make a supporting member 130 realize tangential movements.

Guide unit 150 comprises that the guide rail 160 that vertically forms along Y direction and two ends that are formed on a supporting member 130 sentence the guide block 170 that can move horizontally along guide rail 160 on framework 110.

A plurality of coater head 140 are provided with supporting member 130 to the end along X-axis, and can move horizontally along X-direction by means of actuator.

Fig. 5 is the enlarged drawing of the supporting member of Fig. 4.

In a plurality of coater head 140 of supporting member 130 each all has nozzle 220, therefore can realize that the seal pattern of a plurality of panels forms simultaneously.

Fig. 6 is the stereographic map of the coater head of Fig. 4.

Therefore referring to Fig. 6, coater head 140 is couple to vertical supply unit 210, can move up and down according to the motion of vertical supply unit 210.

Coater head 140 is configured such that by using vertical supply unit 210 to move up and down coater head 140 and controls the nozzle 220 of coater head 140 and be positioned over distance between the substrate S on the saddle 120.

Coater head 140 comprises nozzle 220 that inserts in it and the displacement transducer 230 that is used to measure distance between substrate S and the nozzle 220.

Distance between displacement transducer 230 gaging nozzles 220 and the substrate S, and measured value is delivered to controller.

Controller action is based on the distance between measuring distance control nozzle 220 and the substrate S, and control actuator and vertical supply unit 210.

Coater head 140 is configured such that also the syringe that is filled with sealant to be coated is installed to coater head 140.

Syringe 240 is connected to the pneumatic device (not shown) of feeding that is used under predetermined pressure mandatory ground of liquid crystal feed nozzle.

Followingly first embodiment of the present invention is described with reference to Fig. 7 A to 7E, 8 and 9.

Fig. 7 A to 7E is the plan view from above that illustrates in order according to the method that is used to form seal pattern of first embodiment of the invention, Fig. 8 is the enlarged drawing by the represented part of the circular dashed line of Fig. 7 E, and Fig. 9 illustrates the schematic cross section of utilization according to the formed LCD of method of formation seal pattern of the present invention.

Shown in Fig. 7 A, prepare first substrate 300, and on first substrate 300, limit a plurality of panel area P1～P9 that are used to form a plurality of liquid crystal panels.

Next, shown in Fig. 7 B, by the saddle 120 or the coater head 140 (Fig. 4) of mobile coating machine 100, the first direction from the outside at the left top of the left panel district P1 of first substrate 300 along first axle (X-axis) 1. forms the first seal pattern part 331 in the first side 351 of a plurality of panel area P1～P3 by a coating operation.

Like this, phrase " a coating operation " is meant when being formed for the first seal pattern part 331 of a plurality of panel area P1～P3, under nozzle height, coating speed and the unaltered condition of coating pressure, on a plurality of panel area P1～P3, form the first seal pattern part 331 simultaneously.

Be used for the first seal pattern part 331 of a plurality of panel area P1～P3, the first seal pattern part 331 that is used for the first seal pattern part 331 of a plurality of panel area P4～P6 and is used for a plurality of panel area P7～P9 can form in order, perhaps alternatively can use a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

Next, shown in Fig. 7 C, by saddle 120 or the coater head 140 (Fig. 4) that moves coating machine 100 along X-direction, the second direction from the outside of the right bottom of the right panel district P3 of first substrate 300 along first axle (X-axis) 2. forms the second seal pattern part 333 in the second side 353 of a plurality of panel area P1～P3 by a coating operation.

Like this, phrase " a coating operation " is meant when being formed for the second seal pattern part 333 of a plurality of panel area P1～P3, under nozzle height, coating speed and the unaltered condition of coating pressure, on a plurality of panel area P1～P3, form the second seal pattern part 333 simultaneously.

Be used for the second seal pattern part 333 of a plurality of panel area P1～P3, the second seal pattern part 333 that is used for the second seal pattern part 333 of a plurality of panel area P4～P6 and is used for a plurality of panel area P7～P9 can form in order, perhaps alternatively can use a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

The first seal pattern part 331 or the second seal pattern part 333 can form by a coating operation.When forming the first seal pattern part 331 or the second seal pattern part 333, the coating speed of the height of nozzle 220, seal pattern 330 and coating pressure keep constant.

Thereafter, first substrate 300 rotates through 90 ° by means of the circular saddle 120 (Fig. 4) with rotating driver (not shown).

Next, shown in Fig. 7 D, by the saddle 120 or a supporting member 130 (Fig. 4) of mobile coating machine 100, the third direction from the inboard left top of the left panel district P1 of first substrate 300 along second axis (Y-axis) 3. forms the 3rd seal pattern part 335 at the 3rd side 355 of a plurality of panel area P1, P4, P7.

Second axis is vertical with first axle, and the 3rd seal pattern part 335 that forms on above panel area the 3rd side 355 forms by several coating operations.The coating operation amount that is used to form the 3rd seal pattern part 335 preferably is chosen to be with a plurality of panel area P1 that locate along the line of second axis, the quantity of P4, P7 and equates.

Like this, phrase " several are coated with operation " is meant when being formed for the 3rd seal pattern part 335 of a plurality of panel area P1, P4, P7, the condition changing of nozzle height, coating speed and coating pressure several times.Especially, the quantity of these several times refers to along panel area P1, the P4 of the line location of second axis, the quantity of P7.

Be used for the 3rd seal pattern part 335 of a plurality of panel area P1, P4, P7, the 3rd seal pattern part 335 that is used for the 3rd seal pattern part 335 of a plurality of panel area P2, P5, P8 and is used for a plurality of panel area P3, P6, P9 can form according to priority, perhaps alternatively can utilize a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

Next, shown in Fig. 7 E, by a saddle 120 or a supporting member 130 (Fig. 4) that moves coating machine 100 along Y direction, form the 4th seal pattern part 337 to 4. four side 357 at a plurality of panel area P7, P4, P1 from the inboard right bottom of the left panel district P7 of first substrate 300 along the four directions of second axis (Y-axis).

Second axis is vertical with first axle, and the 4th seal pattern part 337 that forms on above panel area four side 357 forms by several coating operations.The coating operation amount that is used to form the 4th seal pattern part 337 preferably is chosen to be with a plurality of panel area P1 that locate along the line of second axis, the quantity of P4, P7 and equates.

Like this, phrase " several are coated with operation " is meant when being formed for the 4th seal pattern part 337 of a plurality of panel area P1, P4, P7, the condition changing of nozzle height, coating speed and coating pressure several times.Especially, the quantity of these several times refers to along panel area P1, the P4 of the line location of second axis, the quantity of P7.Be used for the 4th seal pattern part 337 of a plurality of panel area P1, P4, P7, the 4th seal pattern part 337 that is used for the 4th seal pattern part 337 of a plurality of panel area P2, P5, P8 and is used for a plurality of panel area P3, P6, P9 can form according to priority, perhaps alternatively can utilize a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

The 3rd seal pattern part 335 or the 4th seal pattern part 337 can form by several coating operations.Preferably, be coated with panel area P1～P9 independently.

Therefore, when the 3rd seal pattern part 335 that forms panel area P1～P9 or the 4th seal pattern part 337, the coating speed of the height of nozzle 220, seal pattern 330 or coating pressure should reset.

Therefore, can provide the unit of height that can High-speed Control nozzle 220, the high-speed transitions valve (not shown) that also can be provided for High-speed Control coating pressure is can realize carrying out High-speed Control by means of controller.

The 3rd side 355 of the length ratio panels district P1～P9 of the 3rd seal pattern part 335 or the 4th seal pattern part 337 or the length of four side 357 are short.

This is the seal pattern 330 in order to prevent first axle, and---seal pattern 330 that promptly comprises the first seal pattern part 331 and the second seal pattern part 333---crosses one another with the seal pattern 330 that comprises the 3rd seal pattern part 335 or the 4th seal pattern part 337.

That is to say, in each panel area P1～P9, between first seal pattern part and the 3rd seal pattern part, between first seal pattern part and the 4th seal pattern part, forming the space between second seal pattern part and the 3rd seal pattern part or between second seal pattern part and the 4th seal pattern part.

Particularly, when after the seal pattern 330 such as the first axle of the first seal pattern part 331 and the second seal pattern part 333 forms, when forming the 3rd seal pattern part 335 or the 4th seal pattern part 337, therefore the nozzle 220 of coating machine 100 has prevented the pollution to nozzle 220 not by comprising the seal pattern 330 of the first seal pattern part 331 and the second seal pattern part 333.

As mentioned above, according to the present invention because the seal pattern of first axle 330 forms by a coating operation, thus the working time can shorten significantly, and boost productivity.

Thereafter, preparation drips to liquid crystal on first substrate 300 or second substrate in the face of the second substrate (not shown) of first substrate 300, then two substrates is engaged with each other.

When two substrates were engaged with each other, seal pattern 330 was expanded (Fig. 3).Under the situation that forms seal pattern 330 as shown in Figure 8, can form uniform seal pattern 330, even after two substrates engage, also be like this.

Fig. 8 is the enlarged drawing by the represented part of the circular dashed line of Fig. 7 E, does not wherein have cross section between the 4th seal pattern part 337 and the second seal pattern part 333 or between the first seal pattern part 331 and the 4th seal pattern part 337.

Therefore,, form the seal pattern 330 of rectangular in form along the edge of panel area, be filled in two substrates simultaneously and engage formed space 310 before even after two substrates engage, expand when seal pattern 330.

Seal pattern 330 forms the width with about 200 μ m on first substrate 300.When engaging two substrates, two sides of seal pattern are all expanded about 400 μ m.Therefore after engaging two substrates, seal pattern can have the width (Fig. 3) of about 1000 μ m.

Therefore, space 310 forms the width with about 400 μ m, makes space 310 really be filled by seal pattern 330, and the overlapping of seal pattern 330 after two substrates engage minimized, and has prevented seal pattern 330 thickenings thus.

Next, by utilizing UV (ultraviolet ray) the photosystem radiation UV light seal pattern 330 that hardens, make win substrate 300 and second substrate to be engaged with each other.

Seal pattern can be formed by the encapsulant that UV can harden.Especially, the encapsulant that when utilizing liquid crystal drip-injection method to make the LCD device, uses UV to harden.It is disadvantageous using the situation of thermmohardening encapsulant in liquid crystal drip-injection method, and this is because being formed at two liquid crystal between the substrate can be contaminated in the process of heated sealant pattern 330.

Two substrate cut having engaged become each panel area P1～P9 thereafter.Cutting technique comprises line technology and sliver technology, line technology be used to utilize by the high adamas of hardness ratio glass plate hardness made on substrate surface, form line of cut, sliver technology is used for cutting substrate under the effect of power.

After line technology and sliver technology, finished each panel.

Referring to Fig. 9, the LCD device comprises TFT substrate 400, the seal pattern 330 that forms in the face of the colored filter substrate 500 of TFT substrate, along the inward flange of TFT substrate 400 and colored filter substrate 500 and the liquid crystal layer 600 that forms between TFT substrate 400 and colored filter substrate 500.

In the LCD device, in order between TFT substrate 400 and colored filter substrate 500, to form liquid crystal layer 600, adopt vacuum-injection process traditionally, this method is included between TFT substrate 400 and the colored filter substrate 500 and injects liquid crystal, and TFT substrate 400 and colored filter substrate 500 utilize capillary force and pressure differential to be engaged with each other.

Yet because above method needs the long period in order to inject liquid crystal, therefore along with the increase of substrate area, throughput rate descends inversely proportionally.

Therefore, the current liquid crystal drip-injection method of mainly utilizing, it comprises liquid crystal is dripped on TFT substrate 400 or the colored filter substrate 500, therefore forms liquid crystal layer 600, and then TFT substrate 400 and colored filter substrate 500 is engaged with each other.

In addition, hereinafter second embodiment of the present invention is described with reference to Figure 10 A to 10E.Below omitted those the identical descriptions with first embodiment, and different description parts only is provided.For the purpose of describing, similar elements is indicated by same reference numbers.

That is to say that the same reference numerals indication is used for the identical components of identical function.

Figure 10 A to 10E is the plan view from above that illustrates in order according to the method that is used to form seal pattern of second embodiment of the invention.

As shown in figure 10, prepare first substrate 300, and on first substrate 300, limit a plurality of panel area P1～P9 that are used to form a plurality of liquid crystal panels.

Next, shown in Figure 10 B, by the saddle 120 or the coater head 140 (Fig. 4) of mobile coating machine 100, the first direction from the inboard left top of the left panel district P1 of first substrate 300 along first axle (X-axis) 1. forms the first seal pattern part 331 in the first side 351 of a plurality of panel area P1～P3.

Like this, the seal pattern part 331 that is formed on the first side 351 of above panel area derives from several coating operations.The quantity that is used to form the coating operation of the first seal pattern part 331 preferably is chosen to be with the quantity of the panel area P1～P3 that locatees along the line of first axle and equates.

Phrase " several are coated with operation " is meant when being formed for the first seal pattern part 331 of a plurality of panel area P1～P3, the condition changing of nozzle height, coating speed and coating pressure several times.Especially, the quantity of these several times refers to along the quantity of the panel area P1～P3 of the line of first axle location.

Be used for the first seal pattern part 331 of a plurality of panel area P1～P3, the first seal pattern part 331 that is used for the first seal pattern part 331 of a plurality of panel area P4～P6 and is used for a plurality of panel area P7～P9 can form according to priority, perhaps alternatively can utilize a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

Next, shown in Figure 10 C, by saddle 120 or the coater head 140 (Fig. 4) that moves coating machine 100 along X-direction, the second direction from the inboard right bottom of the right panel district P3 of first substrate 300 along first axle (X-axis) 2. forms the second seal pattern part 333 in the second side 353 of a plurality of panel area P1～P3.

Like this, the second seal pattern part 333 that is formed on the second side 353 of above panel area derives from several coating operations.The quantity that is used to form the coating operation of the second seal pattern part 333 preferably is chosen to be with the quantity of the panel area P1～P3 that locatees along the line of first axle and equates.

Like this, phrase " several are coated with operation " is meant when the second seal pattern part 333 that is used for a plurality of panel area P1～P3 forms, the condition changing of nozzle height, coating speed and coating pressure several times.Especially, the quantity of these several times refers to along the quantity of the panel area P1～P3 of the line of first axle location.

Be used for the second seal pattern part 333 of a plurality of panel area P1～P3, the second seal pattern part 333 that is used for the second seal pattern part 333 of a plurality of panel area P4～P6 and is used for a plurality of panel area P7～P9 can form according to priority, perhaps alternatively can utilize a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

Next, shown in Figure 10 D, by the saddle 120 or a supporting member 130 (Fig. 4) of mobile coating machine 100, the third direction from the inboard left top of the left panel district P1 of first substrate 300 along second axis (Y-axis) 3. forms the 3rd seal pattern part 335 at the 3rd side 355 of a plurality of panel area P1, P4, P6.

Second axis is vertical with first axle, and the 3rd seal pattern part 335 that forms on above panel area the 3rd side 355 derives from several coating operations.The coating operation amount that is used to form the 3rd seal pattern part 335 preferably is chosen to be with a plurality of panel area P1 that locate along the line of second axis, the quantity of P4, P7 and equates.

Like this, phrase " several are coated with operation " is meant when the 3rd seal pattern part 335 that is used for a plurality of panel area P1, P4, P7 forms, the condition changing of nozzle height, coating speed and coating pressure several times.Especially, the quantity of these several times refers to along panel area P1, the P4 of the line location of second axis, the quantity of P7.

Next, shown in Figure 10 E, by a saddle 120 or a supporting member 130 (Fig. 4) that moves coating machine 100 along Y direction, form the 4th seal pattern part 337 to 4. four side 357 at a plurality of panel area P7, P4, P1 from the inboard right bottom of the left panel district P7 of first substrate 300 along the four directions of second axis (Y-axis).

Second axis is vertical with first axle, and the 4th seal pattern part 337 that forms on above panel area four side 357 derives from several coating operations.The coating operation amount that is used to form the 4th seal pattern part 337 preferably is chosen to be with a plurality of panel area P1 that locate along the line of second axis, the quantity of P4, P7 and equates.

Like this, phrase " several are coated with operation " is meant when the 4th seal pattern part 337 that is used for a plurality of panel area P1, P4, P7 forms, the condition changing of nozzle height, coating speed and coating pressure several times.Especially, the quantity of these several times refers to along panel area P1, the P4 of the line location of second axis, the quantity of P7.

Be used for the 4th seal pattern part 337 of a plurality of panel area P1, P4, P7, the 4th seal pattern part 337 that is used for the 4th seal pattern part 337 of a plurality of panel area P2, P5, P8 and is used for a plurality of panel area P3, P6, P9 can form according to priority, perhaps alternatively can utilize a plurality of nozzles 220 as shown in Figure 5 to form simultaneously.

Like this, the second side 353 or four side 357 weak points that comprise the seal pattern 330 ratio panels district P1～P9 of the 3rd seal pattern part 335 or the 4th seal pattern part 337.

That is to say, can be in each panel area P1～P9, between first seal pattern part and the 3rd seal pattern part, between first seal pattern part and the 4th seal pattern part, forming the space between second seal pattern part and the 3rd seal pattern part or between second seal pattern part and the 4th seal pattern part.

Particularly, when after the seal pattern 330 such as the first axle of the first seal pattern part 331 and the second seal pattern part 333 forms, when forming the 3rd seal pattern part 335 or the 4th seal pattern part 337, the nozzle 220 of coating machine 100 by the first seal pattern part 331 and the second seal pattern part 333 of seal pattern 330, has not therefore prevented the pollution to nozzle 220.

Simultaneously, the first seal pattern part 331, the second seal pattern part 333, the 3rd seal pattern part 335 or the 4th seal pattern part 337 can form by several coating operations.Preferably, can be coated with panel area P1～P9 independently.

Therefore, when the first seal pattern part 331 that forms panel area P1～P9, the second seal pattern part 333, the 3rd seal pattern part 335 or the 4th seal pattern part 337, the coating speed of the height of nozzle 220, seal pattern 330 or coating pressure should reset.

When two substrates were engaged with each other, seal pattern 330 was expanded (Fig. 3).Under the situation that forms seal pattern 330 as shown in figure 11, can form uniform seal pattern 330, even after two substrates engage, also be like this.

Figure 11 is the enlarged drawing by the represented part of the circular dashed line of Figure 10 E, wherein the first seal pattern part 331, the second seal pattern part 333, the 3rd seal pattern part 335 or and the 4th seal pattern part 337 between do not have cross section.

Therefore, even after two substrates engage, expand, also be to have filled formed space 310 before two substrates engage, and form the seal pattern 330 of rectangular in form along the edge of panel area when seal pattern 330.

Space 310 forms the width with about 400 μ m, makes space 310 really be filled by seal pattern 330, and the overlapping of seal pattern 330 after two substrates engage minimized, and has prevented seal pattern 330 thickenings thus.

Next, by utilizing the UV photosystem radiation UV light seal pattern 330 that hardens, make win substrate 300 and second substrate to be engaged with each other.

Seal pattern can be formed by the encapsulant that UV can harden.Especially, the encapsulant that when utilizing liquid crystal drip-injection method to make the LCD device, uses UV to harden.It is problematic using the situation of thermmohardening encapsulant in liquid crystal drip-injection method, and this is because being formed at two liquid crystal between the substrate can be contaminated in the process of heated sealant pattern 330.

After line technology and sliver technology, finished each panel.

As mentioned before, the invention provides a kind of substrate, a kind of method and a kind of method of utilizing said method to make the LCD device that forms seal pattern with seal pattern.According to the present invention, eliminated the cross section of seal pattern, make that need not to worry seal pattern enters the viewing area after two substrates that constitute the LCD device engage.

And, according to the present invention, eliminated the cross section of seal pattern, make and can after two substrates that constitute the LCD device engage, form even seal pattern.

And according to the present invention, the overlapping of seal pattern after two substrates that constitute the LCD device engage is minimized, and therefore prevented the seal pattern thickening.

In addition, according to the present invention, can prevent to pollute the nozzle of coating machine.

Though for the description of illustrative purpose embodiments of the present invention, it will be apparent to one skilled in the art that not breaking away under the disclosed scope of the invention of claims and the real situation, can carry out various modification, increase and replacement.Therefore, these modifications, increase and replacement also are construed as and have fallen within the scope of the invention.

Claims

1. a substrate comprises a plurality of panel areas that are spaced apart from each other and has the formed seal pattern of the coating machine of utilization on described substrate, and described seal pattern comprises:

On the first seal pattern part, first seal pattern part are formed at each first side in described a plurality of panel area along first axle;

On the second seal pattern part, second seal pattern part are formed at each second side in described a plurality of panel area along described first axle;

The 3rd seal pattern part, the 3rd seal pattern part utilizes several coating operations to be formed on each the 3rd side in described a plurality of panel area along second axis perpendicular to described first axle; And

The 4th seal pattern part, the 4th seal pattern part utilizes several coating operations to be formed on each the four side in described a plurality of panel area along described second axis.

2. substrate as claimed in claim 1, wherein, in described first seal pattern part, described second seal pattern part, described the 3rd seal pattern part or described the 4th seal pattern part length of at least one than each the length weak point of described first side, described second side, described the 3rd side or described four side in described a plurality of panel areas corresponding with it.

3. substrate as claimed in claim 1, wherein, the length that is formed at described the 3rd seal pattern part on each described the 3rd side in described a plurality of panel area is shorter than each the length of described the 3rd side in described a plurality of panel areas, and the length that is formed at described the 4th seal pattern part on each the described four side in described a plurality of panel area is shorter than each the length of described four side in described a plurality of panel areas.

4. substrate as claimed in claim 1, wherein, between described first seal pattern part and described the 3rd seal pattern part,, form the space between described first seal pattern part and described the 4th seal pattern part, between described second seal pattern part and described the 3rd seal pattern part or between described second seal pattern part and described the 4th seal pattern part.

5. substrate as claimed in claim 1, wherein, described first seal pattern part of described a plurality of panel areas or described second seal pattern partly utilize a coating operation to form.

6. substrate as claimed in claim 1, wherein, the quantity that is used to form the coating operation of described first seal pattern part of described a plurality of panel areas or described second seal pattern part is chosen to be with the quantity of the panel area of locating along the line of described first axle and equates.

7. substrate as claimed in claim 1, wherein, the quantity that is used to form the coating operation of described the 3rd seal pattern part of described a plurality of panel areas or described the 4th seal pattern part is chosen to be with the quantity of the panel area of locating along the line of described second axis and equates.

8. method that forms seal pattern, it utilizes coating machine to form described seal pattern on substrate, and described substrate comprises a plurality of panel areas that are spaced apart from each other thereon, and described method comprises:

Form each the seal pattern of first side in described a plurality of panel area along first axle;

Form each the seal pattern of second side in described a plurality of panel area along described first axle;

Along utilize several coating operations to form each the seal pattern of the 3rd side in described a plurality of panel areas perpendicular to second axis of described first axle; And

Utilize several coating operations to form each the seal pattern of four side in described a plurality of panel areas along described second axis.

9. method as claimed in claim 8, wherein, the seal pattern of the described first side of each in described a plurality of panel area, the seal pattern of the described second side of each in described a plurality of panel area, the seal pattern of described the 3rd side of each in described a plurality of panel area, the length of at least one in the seal pattern of the described four side of each in perhaps described a plurality of panel areas is than each the described first side in described a plurality of panel areas corresponding with it, described second side, the length of described the 3rd side or described four side is short.

10. method as claimed in claim 8, wherein, the length of the seal pattern of described the 3rd side of each in described a plurality of panel area is shorter than each the length of described the 3rd side in described a plurality of panel areas, and each the length of seal pattern of described four side in described a plurality of panel area is shorter than each the length of described four side in described a plurality of panel areas.

11. method as claimed in claim 8, wherein, between the seal pattern of the seal pattern of described first side and described the 3rd side,, form the space between the seal pattern of the seal pattern of described first side and described four side, between the seal pattern of the seal pattern of described second side and described the 3rd side or between the seal pattern of the seal pattern of described second side and described four side.

12. method as claimed in claim 8 wherein, utilizes a coating operation to carry out the step of second seal pattern of the step of seal pattern of described formation first side or described formation second side.

13. method as claimed in claim 8, wherein, the quantity of coating operation that is used to form the seal pattern of the seal pattern of described first side or described second side is chosen to be with the quantity of the panel area of locating along the line of described first axle and equates.

14. method as claimed in claim 8, wherein, the quantity of coating operation that is used to form the seal pattern of the seal pattern of described the 3rd side or described four side is chosen to be with the quantity of the panel area of locating along the line of described second axis and equates.

15. method as claimed in claim 8 wherein, under nozzle height, coating speed or the unaltered condition of coating pressure, is carried out the step of the seal pattern of the step of seal pattern of described formation first side or described formation second side.

16. method as claimed in claim 8 wherein, under the condition of nozzle height, coating speed or coating pressure change, is carried out the step of the seal pattern of the step of seal pattern of described formation first side or described formation second side.

17. method as claimed in claim 8 wherein, under the condition of nozzle height, coating speed or coating pressure change, is carried out the step of the seal pattern of the step of seal pattern of described formation the 3rd side or described formation four side.

18. a method of making LCD device comprises:

Prepare first substrate and second substrate, described first substrate is included in a plurality of panel areas that are spaced apart from each other on first substrate;

Utilization as each described method in the claim 8 to 17 as described in form seal pattern on first substrate;

Described first substrate and described second substrate are engaged with each other, and described seal pattern then hardens; And

Described first substrate that is engaged with each other is become in described a plurality of panel area each with described second substrate cut.

19. method as claimed in claim 18 further comprises liquid crystal is dripped on described first substrate or described second substrate.