KR20000038296A - Panel for testing back membrane of liquid crystal display and a method for manufacturing the same - Google Patents

Abstract

PURPOSE: A panel for testing back membrane of liquid crystal display and a method for manufacturing the same is provided to simplify the structure of the back membrane of the liquid crystal display. CONSTITUTION: A panel for testing back membrane of liquid crystal display includes a first and second optical transparent substrate(10,20), back membranes(14,24), a spacer, and seal lines(32,33). The first and second optical transparent substrate(10,20) include node each formed on fore face of inner surface, and include a pair of first edges and a pair of second edges perpendicular to the first edges. The back membranes(14,24) are formed on each node of the first and second substrates. The spacer is implemented between the first and second substrates and is applied to the substrates with a predetermined distance from the terminal of the first edges. The seal lines(32,33) are arranged along with the application line of the first edges.

Description

Panel for defect inspection of liquid crystal display device and manufacturing method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to defect inspection of alignment films used in liquid crystal displays, and more particularly, to a liquid crystal display panel for alignment film defect inspection and a manufacturing method thereof.

Since the physical properties of the liquid crystal used in the liquid crystal display depend on the arrangement state of the liquid crystal molecules, there is a difference in response to external force such as an electric field depending on the arrangement state. Therefore, the arrangement control of the liquid crystal molecules is an essential technique not only in the study of the physical properties of the liquid crystal but also in the configuration of the display device.

By simply filling the liquid crystal material between the glass substrates, it is difficult to obtain a uniform molecular arrangement. Therefore, an alignment layer is generally formed on the glass substrate.

The materials of the alignment film for controlling the arrangement of the liquid crystal molecules include a main material of inorganic material, a main material of organic material, and a combination of quantum materials. A method of forming an alignment film on a glass substrate includes a spin method, a spray method and a printing method. There are many ways.

After the alignment film is applied, the surface state is changed through the rubbing process to control the arrangement of the liquid crystals.

Since the defects generated in the application and rubbing process of such an alignment film are important processes that cause display defects, it is strongly required to accurately perform defect inspection of the alignment film.

Conventional misalignment inspection method includes a first inspection for inspecting the surface of the printed alignment film after the alignment film is printed or the presence of pin-holes, and scratching the surface of the rubbed alignment film after rubbing. There is a second test to check for the presence of.

The primary and secondary inspections are visual inspections. In particular, in the secondary inspection, scratches are injected by spraying waste liquid crystal or water vapor on the surface of the rubbed alignment layer in order to observe defects that are hardly seen by the inspector.

However, despite the inspection of the alignment film during the second stage before assembling the liquid crystal panel, when the state of the alignment film is finally inspected by applying a voltage to the electrodes of the liquid crystal display panel in which the assembly, cutting, liquid crystal injection, and encapsulation processes are completed, Defects that were not recognized during the mentioned inspection process often appear.

When the defects are confirmed in the first and second inspections described above, a reworking operation of removing the defective alignment layer and forming the alignment layer is performed again. However, if a defect is observed in the final inspection, unlike the first and second inspections, reworking is difficult, and even if possible, a large loss such as a two to three-day loss in assembly and a waste of materials occurs. do.

The failure of the primary and secondary inspections to observe the defects identified in the final inspection is due to the difference between the environment of the primary and secondary inspections and the final inspection.

From the above reasons, the production of a test sample having the same environment as the final inspection environment is required, but it is economically extremely disadvantageous to operate a mass production process line to separately manufacture one inspection panel.

Accordingly, the present invention is to provide an alignment film defect inspection panel having an environment and simple structure most similar to the liquid crystal display panel for the final inspection.

It is still another object of the present invention to provide a method for manufacturing an alignment film defect inspection panel which can be manufactured without additional process in a short time.

1 is a plan view of a panel for defect inspection of an alignment film of a liquid crystal display according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line IV-IV of FIG. 1.

3 is a manufacturing process diagram of a thin film transistor liquid crystal display panel for explaining a manufacturing process of the alignment film defect inspection panel according to an embodiment of the present invention.

Figure 4 is a manufacturing process showing a process for manufacturing a test panel for the alignment film defect inspection, according to an embodiment of the present invention.

FIG. 5 is an explanatory view showing a sealant dispensing and spray spreading process of a panel for defect inspection of an alignment layer of a liquid crystal display according to an exemplary embodiment of the present invention. FIG.

6 is a schematic plan view of a sealant dispensing device and a spacer spray device applied in the manufacturing process of FIG.

FIG. 7 is an explanatory diagram illustrating a bonding process of a panel for inspecting defects of alignment films of a liquid crystal display according to an exemplary embodiment of the present invention. FIG.

8 is an explanatory diagram showing a liquid crystal injection process of a panel for defect inspection of an alignment layer of a liquid crystal display according to an exemplary embodiment of the present invention.

9 is an explanatory diagram showing a method of inspecting an alignment layer defect using the inspection panel of FIG. 1;

In order to achieve the above objects, according to an aspect of the present invention, the alignment film defect inspection panel of the liquid crystal display, each of the square having a pair of first sides and a pair of second sides perpendicular to the first side. And a first and second translucent insulating substrate having a plate structure. Electrodes are formed on the front surfaces on the inner surfaces of the first and second translucent insulating substrates, respectively, and the electrodes formed on the inner surfaces of at least one of these electrodes are transparent. An alignment film is disposed on each electrode of the first to second substrates. The 1st board | substrate and the 2nd board | substrate are joined by the edge part of the 1st side of the said 1st board | substrate moved by the predetermined distance from the edge part of the 1st side of the said 2nd board | substrate. The liquid crystal and the spacer are interposed between the bonded first substrate and the inner surface of the second substrate. The seal line is disposed along the joining line in the first side direction of the first and second substrates.

Here, the first and second substrates are mother glass substrates having an area corresponding to the sum of the areas of the plurality of unit panels.

Optionally, the inspection panel has a predetermined length from each end of the pair of second sides parallel to the pair of seal lines and perpendicular to the first side, in the pair of seal lines, and the second And a plurality of auxiliary seal lines having a width and a second gap. Here, the auxiliary seal line is for keeping the cell gap of the liquid crystal constant.

According to another aspect of the invention, the manufacturing method of the alignment film defect inspection panel of the liquid crystal display includes the following processes. First, first and second translucent insulating substrates having only electrodes formed on the front surface of each inner surface are prepared. The electrode formed on the inner surface of the at least one substrate is transparent. Next, an alignment film is formed on the inner surfaces of the first and second substrates, and rubbing and washing are performed. Through the dispensing of the sealant and spraying of the spacer on the inner surface of the first substrate, a pair of seal lines parallel to the selected one side of the first substrate and having a selection width and a selection interval are formed. Next, after aligning the inner surfaces of the first substrate and the second substrate to face each other, the two substrates are bonded by pressing the outer surfaces of these two substrates and curing the formed seal lines. Then, the liquid crystal is injected between the inner surfaces of the bonded first and second substrates.

Optionally, during formation of the seal line, within the pair of seal lines, a predetermined length from each end of the pair of second sides parallel to the pair of seal lines and perpendicular to the first side, It is further possible to form a plurality of auxiliary seal lines having a second width and a second spacing. Here, the auxiliary seal line is for maintaining the cell gap.

According to another aspect of the invention, the manufacturing method of the alignment film defect inspection panel of the liquid crystal display includes the following steps. First, a transparent electrode of a matrix array, a signal line for applying a data signal to the transparent electrode, a switching element for switching the data signal applied to the transparent electrode from the signal line, a control signal for controlling the switching of the switching element During the formation of at least one first translucent insulating substrate on which the scanning lines transmitted to the switching element are formed on the inner surface, and at least one second translucent insulating substrate on which the color filter layer and the transparent counter electrode are formed on the inner surface, Only electrodes are formed on the front surface, and electrodes formed on at least one inner surface of the transparent third and fourth transmissive insulating substrates are prepared together. Next, an alignment film is formed on the inner surfaces of the first to fourth substrates, followed by rubbing and washing. Next, before assembling the first substrate and the second substrate, the sealant is dispensed on the inner surface of any one of the third and fourth substrates through the dispensing of the sealant and the spray of the spacer. A pair of seal lines parallel to the first side and having a selection width and a selection interval are formed. Next, after aligning the inner surfaces of the third substrate and the fourth substrate to face each other, the two substrates are bonded by pressing the outer surfaces of these two substrates and curing the formed seal lines. Then, the liquid crystal is injected between the inner surfaces of the third and fourth bonded substrates.

Optionally, during formation of the seal line, within the pair of seal lines, a predetermined length from each end of the pair of second sides parallel to the pair of seal lines and perpendicular to the first side, It is further possible to form a plurality of auxiliary seal lines having a second width and a second spacing. Here, the auxiliary seal line is for keeping the cell gap of the inspection panel constant.

Other objects and advantages of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings.

1 is a plan view of an alignment film defect inspection panel having a simple structure, and FIG. 2 is a cross-sectional view taken along line IV-IV of FIG. 1.

1 and 2, two substrates 10, 20 having inner surfaces facing each other are provided. The substrates 10 and 20 are transmissive insulating substrates, for example, mother glass substrates having an area corresponding to six unit panel areas. Transparent electrodes 12 and 22 made of indium tin oxide (ITO) are formed on the inner surfaces of the substrates 10 and 20. The transparent electrodes 12 and 22 do not have a specific structure pattern unlike the pixel electrodes of the actual liquid crystal display panel. Alignment films 14 and 24 are formed on the inner surfaces of the transparent electrodes 12 and 22, respectively.

The main seal lines 32 and 33 coated with the sealant of the first width are positioned along an edge of the right long side E20 of the lower substrate 20 and a portion spaced apart from the left long side E21 by a predetermined distance ℓ. On both short sides between the main seal lines 32, auxiliary seal lines 34 and 36 for maintaining cell gaps between the upper and lower substrates 10 and 20 are positioned. The spacing I between each of these auxiliary seal lines 34, 36 is 2-20 mm.

Since the upper and lower substrates 10 and 20 are alternately bonded to each other, the portion corresponding to the distance ℓ from the right long side E11 of the upper substrate 10 and the distance ℓ from the left long side E21 of the lower substrate 20. The transparent electrodes 12 and 22 of the corresponding portion are exposed to the outside. Here, the alignment layer on the exposed transparent electrodes 12 and 22 is removed by patterning before bonding of the third and fourth substrates, or only desired portions are removed after bonding. Optionally, the alignment layer on the exposed transparent electrodes 12 and 22 may remain without being removed.

In the inspection panel having the above-described configuration, the cell gap corresponding to the gap between the upper substrate 10 and the lower substrate 20 should be in the range of 3 to 20 μm, and the uniformity should be ± 2 μm or less. desirable.

The inspection panel shown in Figs. 1 and 2 has a simple structure, but has an environment close to the actual thin film transistor liquid crystal display panel for the final inspection of the alignment film defects. Therefore, the use of the above-described inspection panel enables the observation of the alignment film defects in which the actual thin film transistor liquid crystal display panel can be found in the final alignment film inspection.

3 is a manufacturing process diagram of an actual thin film transistor liquid crystal display panel for explaining the manufacturing process of the alignment film defect inspection panel shown in FIGS.

Referring to FIG. 3, for example, 50 transmissive insulating substrates are prepared. The translucent insulating substrate used here is a mother glass substrate having an area corresponding to the area of a plurality of unit panels, for example, six unit liquid crystal panels, for mass production.

The 50 light-transmissive insulating substrates are composed of a first group of 25 TFT substrates and a second group of 25 color filter substrates.

Of the 25 TFT substrates in the first group, 24 are a transparent electrode in a matrix array, a signal line for applying a data signal to the transparent electrode, a switching element for switching a data signal applied from the signal line to the transparent electrode, and a switching of the switching element. The scanning line for transmitting the control signal to the switching element is a substrate (hereinafter referred to as a first transmissive insulating substrate) formed on the inner surface, and one sheet is a transparent electrode, for example, indium tin oxide, on the front surface of the inner surface. A substrate (or a third glass substrate) on which only electrodes having a material of (Indium Tin Oxide; ITO) are formed.

In addition, of the twenty-five translucent insulating substrates of the second group, 24 sheets are substrates (hereinafter referred to as second glass substrates) on which the color filter layer and the transparent counter electrode are formed on the inner surface, and one sheet is placed on the entire surface of the inner surface. It is a board | substrate (or 4th translucent insulating board | substrate) in which only the transparent electrode, for example, the electrode which has a material of ITO is formed.

Here, preparing 24 sheets each of the first glass substrate and the second glass substrate means that a cassette having 25 sheets of mother glass substrates in one unit is used as an example of actual application in the manufacturing process. The third glass substrate is mounted in one empty space of one cassette, and the fourth glass substrate is mounted in one empty space of another cassette.

The number of these 1st glass substrates and the 2nd glass substrate is not limited to 24 sheets, It is possible if it is at least 1 sheet, respectively.

In addition, although the transparent electrode is disposed on the front surface of the third glass substrate and the fourth glass substrate as an example, the electrode of the third transparent insulating substrate is a transparent electrode, the electrode of the fourth transparent insulating substrate is a metal material of opaque material Can be used. In this case, the defect is observed on the surface of the third translucent insulating substrate.

In addition, the switching element disposed on the first light-transmissive insulating substrate may be one selected from the group of active switching elements composed of an amorphous silicon thin film transistor, a polysilicon thin film transistor, a diode, and a MIM, and is preferably a thin film transistor. .

On the other hand, the first and third substrates mounted on the TFT substrate manufacturing cassette perform an alignment film forming step (ST2), a rubbing process (ST3), and a cleaning process (ST4), and the second substrate mounted on the color filter substrate manufacturing cassette. The fourth substrate is also in the assembly standby state through the alignment film forming step (ST22), the rubbing step (ST23), and the cleaning step (ST24). Here, the material of the alignment film used is polyimide (PI), which is an organic material, and is applied by a printing method suitable for mass production.

Of the 50 glass substrates on which the cleaning processes ST4 and ST24 have been completed, the two third and fourth glass substrates on which only the transparent electrode is formed on the entire surface are separated. The two separated substrates are made of an inspection panel having the structures shown in Figs. 1 and 2 (ST7), and inspection is performed (ST8).

FIG. 4 is a flowchart illustrating a process of manufacturing a panel for inspecting defects of alignment layers of a liquid crystal display using separated third and fourth mother glass substrates.

Referring to FIG. 4, the prepared third and fourth mother glass substrates include a seal dispensing and spacer dispersing process (ST42), an ultraviolet exposure process (ST43) for assembling and bonding the two substrates to which the two substrates are bonded, and two substrates. An inspection panel is produced through the liquid crystal injection process (ST44) for injecting the liquid crystal in between (ST44). The alignment film defect is inspected using the manufactured panel (ST45).

The spacer is spread on the inner surface of any one of the third and fourth translucent insulating substrates having been cleaned (ST4, ST24), for example, the fourth insulating substrate, and the fourth insulating layer is simultaneously spread with the spacers. Dispensing a sealant for bonding to the third insulating substrate on the inner surface of the substrate. In other words, the spacer and the seal are formed on the same substrate. On the other hand, in actual production of the liquid crystal display panel, the substrate on which the spacer is dispersed and the substrate on which the sealant is distributed are different from each other.

5 is a view showing the dispersion of the spacer and the dispensing process of the sealant.

Referring to FIG. 5, one of the cleaned substrates, for example, the fourth insulating substrate 20, is placed on the roller 44 of the conveyor 42 so that its inner surface faces upward. The fourth insulating substrate 20 placed therein first meets the spacer spreader 120 while moving from left to right, and then meets the seal dispenser 130.

Since the seal agent 134 is formed in a straight line in parallel with the long side of the fourth insulating substrate 56, the fourth insulating substrate 56 is processed while going straight without stopping or changing the direction. Therefore, the time required for dispensing the sealant and dispersing the spacer is shortened, and as a result, the manufacturing time for the inspection panel is shortened.

Since the inspection panel of the present invention is not greatly influenced by the cell gap and the distribution of the spacers 124, it is possible to spread it with the nozzle 122.

FIG. 6 is a schematic block diagram of an apparatus for dispersing a sealant and dispersing a spacer during fabrication of an alignment film defect inspection panel according to the present invention, and includes a die 110 and a spacer spreader 120 installed in the die 110. ) And seal dispenser 132.

The spacer spreader 120 includes a plurality of nozzles 122 disposed in the lower portion of the die 110 in parallel with the width direction of the substrate moving along the longitudinal direction and dispersing the spacers on the linearly moving substrate. The spacing between these nozzles 122 and the spacing between the nozzle end and the substrate below are adjustable according to the distribution of spacers scattered on the substrate.

The seal dispenser 132 is provided at each of the two edges of the lower surface of the die 110, respectively, and as shown in FIG. 1, the main seal line forming syringe for forming two main seal lines along the long side of the substrate. (Syringe; 132a, 132b) and the auxiliary seal line formation syringe 132c on the short side of a panel are included.

The main seal line forming syringes 132a and 132b start dispensing the sealant from the time when the substrate moving from the lower portion enters the vertically lower side of the syringes 132a and 132b, and the syringes 132a and 132b. The sealant is dispensed to a time point passing through the vertical downward of to form a pair of main seal lines 32 parallel to the long sides of the substrates 10 and 20, as shown in FIG.

The auxiliary seal line forming syringe 132c firstly dispenses the sealant for a first time from the time when the substrate moving from the lower portion enters the vertically lower side of the syringes 132a and 132b, and the second time elapses. After the second dispensing of the sealant for a third time, as shown in Fig. 1, a plurality of substrates, which are parallel to the long sides of the substrates 10 and 20 and have a predetermined length along the long side direction from both end portions on the short side, Auxiliary seal lines 34 and 36 are formed.

Here, in the first time, one side substrate of the panel shown in FIG. 1, for example, the fourth transmissive insulating substrate 20, is mounted on the conveyor 42 shown in FIG. 5 and moves from the upper side to the lower side in FIG. Assuming that there is, it means the time taken to form the vertical length of the lower first auxiliary seal line 34, the third time is the time taken to form the vertical length of the upper second auxiliary seal line 34 The second time means the time taken for the substrate 20 to move the distance between the first and second auxiliary seal lines 34 and 36.

The fourth transparent insulating substrate 20 and the other third transparent insulating substrate 10 having completed the formation of the seal line and the dispersion of the spacers are bonded to each other.

FIG. 7 is a schematic cross-sectional view showing the bonding process of these two substrates 10 and 20, with reference numerals 62 and 66 being a lower pressurizing stage and an upper pressurizing stage for pressing the bonded panels, and reference numeral 64 denotes an ultraviolet irradiator; Reference numeral 68 is a mask. When the mask 68 irradiates light from the ultraviolet irradiation unit 64 to cure the applied main seal line and the auxiliary seal line, the mask 68 covers a portion except the seal line application portion to prevent damage of the alignment film due to ultraviolet rays. Do it.

8 is a view illustrating a process of injecting liquid crystal into a panel in which bonding is completed.

Referring to FIG. 8, the bonded panel 60 may contain a liquid crystal, have a predetermined inclination, and may maintain a relatively high temperature of the panel 60 placed thereon during liquid crystal injection at a relatively high temperature. It is placed in the die 72.

The container 76 is provided in the bottom part of the inclined surface of the liquid crystal injection die 72, and the liquid crystal 78 is contained in this container 76. As shown in FIG.

One short side portion of the panel 60 having the auxiliary seal line is immersed in the liquid crystal of the container 76, and the other short side portion is bitten by the air intake device 74 that sucks air.

When the air suction device 74 sucks air in the panel 60 to which the air suction device 74 is attached, the liquid crystal contained in the container 76 is injected between the panels 60.

By maintaining the inclined portion in contact with the panel 60 at a high temperature by the temperature control plate during the injection of the liquid crystal, the liquid crystal is injected to achieve the heat treatment effect.

The use of the liquid crystal injection device as described above improves the injection speed of the liquid crystal.

Next, the method of inspecting the defect of an oriented film using the panel prepared as mentioned above is demonstrated.

Referring to FIG. 9, upper and lower polarizing plates 82 and 84 are disposed above and below the alignment film defect inspection panel. Here, the upper and lower polarizing plates 82 and 84 are placed so that the polarization direction is rotatable.

A light source for irradiating light, for example, a backlight 86 is provided below the lower polarizing plate 84, and a voltage applying device for applying a voltage to the exposed transparent electrode of the test panel is prepared. One terminal of the voltage applying device is connected to the transparent electrode 12 exposed to the protruding portion of the third substrate 10, and the other terminal is the exposed transparent electrode 14 of the protruding portion of the fourth substrate 20. Is connected to.

Here, unlike the case shown in FIG. 5, even when the alignment film remains on the upper portions of the protruding portions of the third substrate 10 and the fourth substrate 20, since the alignment film is thin, the transparent electrode under the transparent electrode is formed. There is no problem in applying the voltage.

Meanwhile, the liquid crystal 30 interposed between the third and fourth substrates 10 and 20 is, for example, a twisted nematic type and has a predetermined free state in a state where no voltage is applied to the transparent electrode. It has a tilt angle and is aligned along the rubbing direction of the alignment film while being twisted about 90 degrees. Optionally, the liquid crystal 30 may be a super twisted nematic type having a twist angle in the range of about 180 degrees to 270 degrees.

Next, the applied voltage is varied to change the gray scale, and the relative polarization direction of the upper and lower polarizers is changed to inspect the defect of the alignment layer.

From this, it is judged whether or not the alignment films 14 and 24 are unsatisfactory, and when there is no defect, the assembling step of assembling the 24 first glass substrates and the 24 second glass substrates as shown in FIG. 3 (ST6) And a cutting step of separating them into a unit panel, an injection and sealing step of injecting liquid crystal, encapsulating a liquid crystal injection hole, and a final inspection are sequentially performed.

On the other hand, when a defect is found in the test panel, the alignment film on the surface of the 48 panels in the assembly standby state is removed, and the process returns to the step of applying the alignment film again.

The time taken to manufacture the test panel of the present invention in the state where the cleaning process is completed is about 30 minutes, and since the test panel is manufactured in the standby state before assembling, there is not much time loss.

In the above-described embodiment, a case in which two mother glass substrates for the production of the inspection panel are added during the partial process of manufacturing the actual panel is manufactured to produce the alignment film defect inspection panel in the same line as the production of the actual panel. However, when applying the electrode formation process, the alignment film formation and rubbing process, and the washing process applied at the time of manufacturing the actual panel, it is possible to produce a panel for the inspection of the alignment film defect separately from the production of the actual panel. However, such a separate manufacturing method, unlike the method described in the previous step, because it is necessary to build a separate production line for the production of the inspection panel, it is not preferable in terms of cost, compared to the previous embodiment.

Meanwhile, the inspection panel of FIGS. 1 and 2 may be manufactured through a process different from the above process.

Referring to FIG. 3 again, the 25 TFT substrates on which the cleaning processes ST4 and ST24 have been completed and the 25 color filter substrates perform the spacer spreading process ST5 and the sealant dispensing process, respectively. Of course, only one transparent electrode and an alignment film of ITO are formed on one inner surface of the 25 TFT substrates, and one transparent electrode and an alignment film of ITO are formed on one inner surface of the 25 color filter substrates. have. Here, the spacer spreading process ST5 and the sealant dispensing process ST25 are performed in the actual production line for the liquid crystal display panel, unlike the embodiment described above. Therefore, unlike the embodiment of the front end, spacer scattering is performed on the TFT substrate, and sealant dispensing is performed on the color filter substrate.

Two mother glass substrates (or third and fourth mother glass substrates) formed only on the transparent electrode are separated. The two separated substrates do not perform the seal dispensing and spacer dispersing process (ST42) shown in FIG. 4, but are directly assembled and UV exposed (ST43) and the liquid crystal injection process (ST44). An inspection panel having the structure shown in Fig. 2 was produced (ST26), and inspection was performed (ST27).

Here, the assembly and ultraviolet exposure process (ST43) and the liquid crystal injection process (ST44) are performed in the same manner using the simple jig shown in Figs. 7 and 8, and thus description thereof is omitted here.

According to the present embodiment, since the spacer spreading process and the sealant dispensing process were performed on 24 TFT substrates and 24 color filter substrates for actual thin film transistor liquid crystal display panel fabrication, unlike the previous embodiment, reworking is not performed. Although it is difficult, by performing the alignment film defect inspection using the manufactured inspection panel, it is possible to prevent the loss of material and time required for the subsequent assembly process.

As described above, the alignment film defect inspection panel of the present invention enables the alignment film defect inspection in the same environment as the actual liquid crystal display panel while having a simpler configuration than the actual panel.

In addition, the manufacturing method of the alignment film defect inspection panel of the present invention can be manufactured in a short time of about 30 minutes and a simple equipment during the waiting time for the actual assembly of the liquid crystal display panel, the actual production time of the liquid crystal display panel Does not affect

Although specific embodiments of the present invention have been described and illustrated herein, modifications and variations may be made by those skilled in the art from the foregoing description. Accordingly, the following claims are intended to embrace all such modifications and variations.

Claims (46)

A square having electrodes formed on the front surface on the inner surface, the electrodes formed on the inner surface of the at least one substrate being transparent, each having a pair of first sides and a pair of second sides perpendicular to the first side First and second translucent insulating substrates having a plate structure; An alignment film formed on each electrode of the first to second substrates; Liquid crystals and spacers interposed between the inner surface of the first substrate and the second substrate bonded to each other with the end portion of the first side of the first substrate moved by a predetermined distance from the end of the first side of the corresponding second substrate. ; And And a seal line arranged along a joining line in a first side direction of the first and second substrates. The panel for inspecting defects of alignment films of a liquid crystal display according to claim 1, wherein the first and second substrates are mother glass substrates having an area corresponding to six unit panels. The panel for inspecting defects of alignment films of a liquid crystal display according to claim 1, wherein the alignment film is polyimide. The panel for inspecting defects of alignment films of the liquid crystal display according to claim 1, wherein the transparent electrode is indium tin oxide. The panel of claim 1, wherein the first side of the first substrate and the first side of the second substrate are long sides. 2. The second width of claim 1, wherein the pair of main seal lines have a predetermined length from each end of the pair of second sides parallel to the pair of main seal lines and perpendicular to the first side, and having a second width. And a plurality of auxiliary seal lines having a second spacing therebetween. 7. The panel of claim 6, wherein the second gap of the auxiliary seal line is about 2 to 20 mm. 7. A panel according to claim 1 or 6, wherein the liquid crystal is a twisted nematic liquid crystal having a twist angle of about 90 degrees. The panel of claim 8, wherein the panel further comprises upper and lower polarizers disposed on outer surfaces of the first and second substrates. 10. The panel for inspecting defects in alignment film defects of a liquid crystal display according to claim 8, wherein the polarization axes of the upper and lower polarizing plates are perpendicular to each other. 7. A panel according to claim 1 or 6, wherein the liquid crystal is a super twisted nematic liquid crystal having a twist angle of about 180 to 270 degrees. The panel of claim 1, wherein an interval between the first substrate and the second substrate is 3 to 20 µm, and a uniformity of the interval is ± 2 µm or less. Preparing only first and second translucent insulating substrates having electrodes formed on a front surface of each inner surface, and transparent electrodes formed on at least one inner surface; Forming, rubbing, and cleaning an alignment layer on inner surfaces of the first and second substrates; Forming a pair of main seal lines on the inner surface of the first substrate, through the dispensing of the sealant and spraying the spacers, parallel to the selected one side of the first substrate and having a selected width and a selected spacing ; Bonding the inner surface of the first substrate and the second substrate to face each other; Curing the main seal line of the bonded substrate; And injecting a liquid crystal between inner surfaces of the first and second substrates bonded to each other, and inspecting a defect of the alignment layer by applying a voltage to the electrodes formed on the inner surfaces of the first and second substrates. A method for producing a panel for inspecting alignment film defects of a liquid crystal display. The method of claim 13, wherein the first and second substrates are mother glass substrates having areas corresponding to a plurality of unit panels. The method of manufacturing a panel for inspecting an alignment film defect of a liquid crystal display according to claim 13, wherein the alignment film is polyimide and formed by a printing method. The method of claim 13, wherein the transparent electrode is indium tin oxide. The pair of main seal lines of claim 13, wherein the pair of main seal lines comprise a first line and a second line, and the first line is formed along a first end of the pair of first sides of the first substrate. And a second line is formed along a position spaced apart by a predetermined distance from a second end opposite to the first end of the first side, wherein the alignment film defect inspection panel of the liquid crystal display is manufactured. 18. The method of claim 17, wherein the bonding of the first substrate and the second substrate, one end of the pair of first sides of the second substrate corresponding to the first side of the first substrate is connected to the second line. Therefore, the manufacturing method of the alignment film defect inspection panel of the liquid crystal display characterized by being performed so that it may be aligned. The method for manufacturing an alignment film defect inspection panel according to claim 13, wherein the first side of the first substrate and the first side of the second substrate are long sides. 14. The method of claim 13, wherein during the forming of the main seal line, in the pair of main seal lines of the inner surface of the first substrate, parallel to the pair of main seal lines and perpendicular to the first side. A plurality of auxiliary seal lines having a predetermined length from each end of the pair of second sides and having a second width and a second interval are further formed. 21. The method of claim 20, wherein the second interval of the auxiliary seal line is about 2 to 20 mm. 22. The manufacture of an alignment film defect inspection panel according to any one of claims 13, 20, and 21, wherein the main seal line and the auxiliary seal line are cured by irradiation of ultraviolet rays. Way. 23. The liquid crystal display of claim 22, wherein an ultraviolet blocking mask is disposed on an upper portion of the panel to prevent the ultraviolet rays from entering the alignment layer in the main seal line and the auxiliary seal line during the irradiation of the ultraviolet rays. The manufacturing method of the panel for inspection of the orientation film defect of The liquid crystal injection of claim 13, wherein the liquid crystal is injected by dipping one side of the pair of second sides of the bonded first and second substrates into a liquid crystal container containing liquid crystals and sucking air from the other side. A method of manufacturing a panel for inspection of defects in alignment films of a liquid crystal display. 25. The method of claim 24, wherein the liquid crystal is a twisted nematic liquid crystal having a twist angle of about 90 degrees. 25. The method of claim 24, wherein the liquid crystal is a super twisted nematic liquid crystal having a twist angle of about 180 to 270 degrees. 25. The alignment film defect of the liquid crystal display according to claim 24, wherein the suction of the liquid crystal is performed in a state in which the bonded panel has a predetermined inclination angle so that the air intake portion is positioned higher than the liquid crystal injecting portion. Method of manufacturing the inspection panel. 28. The method of claim 27, wherein the suction of the liquid crystal is performed while the panel is placed on a temperature control plate capable of temperature control. 29. The method of claim 28, wherein the temperature control plate has a predetermined inclined surface and includes a container mounting portion capable of containing a liquid crystal at a bottom of the inclined surface. The method of claim 13, wherein the dispensing of the sealant and the spraying of the spacer proceed simultaneously. A transparent electrode having a matrix array, a signal line for applying a data signal to the transparent electrode, a switching element for switching a data signal applied to the transparent electrode from the signal line, and a control signal for controlling switching of the switching element. At the front of each inner surface during formation of at least one first translucent insulating substrate having a scanning line transmitted to the inner surface, and at least one second translucent insulating substrate having a color filter layer and a transparent counter electrode formed on the inner surface. Preparing only the third and fourth light-transmitting insulating substrates on which only electrodes are formed and the electrodes formed on at least one inner surface are transparent; Forming, rubbing, and cleaning an alignment layer on an inner surface of the first to fourth substrates; Before assembling the first substrate and the second substrate, a first side of the third substrate is formed by dispensing a sealant and spraying spacers on an inner surface of one of the third and fourth substrates. Forming a pair of main seal lines parallel to and having a selection width and a selection spacing; Bonding the inner surface of the third substrate and the fourth substrate to face each other; Curing the main seal line of the bonded substrate; And injecting a liquid crystal between the inner surfaces of the third and fourth substrates bonded to each other, and inspecting a defect of the alignment layer by applying a voltage to the electrodes formed on the inner surfaces of the third and fourth substrates. A method for producing a panel for inspecting alignment film defects of a liquid crystal display. 32. The method of claim 31, wherein the third and fourth substrates are parent glass substrates having an area corresponding to a plurality of unit panels. 32. The method of claim 31, wherein the alignment film is polyimide and formed by a printing method. 32. The method of claim 31, wherein the transparent electrode is indium tin oxide. 32. The method of claim 31, wherein the pair of main seal lines comprise a first line and a second line, wherein the first line is formed along a first end of the pair of first sides of the third substrate; And a second line is formed along a position spaced apart by a predetermined distance from a second end opposite to the first end of the first side, wherein the alignment film defect inspection panel of the liquid crystal display is manufactured. 36. The method of claim 35, wherein the bonding of the third substrate and the fourth substrate is such that one end of the pair of first sides of the fourth substrate corresponding to the first side of the third substrate has the second line. Therefore, the manufacturing method of the alignment film defect inspection panel of the liquid crystal display characterized by being performed so that it may be aligned. 32. The method of claim 31, wherein the first side of the third substrate and the first side of the fourth substrate are long sides. 32. The method of claim 31, wherein during the forming of the main seal line, within the pair of main seal lines of the inner surface of the third substrate, parallel to the pair of main seal lines and perpendicular to the first side A plurality of auxiliary seal lines having a predetermined length from each end of the pair of second sides and having a second width and a second interval are further formed. The method of claim 38, wherein the second gap between the auxiliary seal lines is about 2 to 20 mm. 40. The manufacture of an alignment film defect inspection panel according to any one of claims 31, 38, and 39, wherein the main seal line and the auxiliary seal line are cured by irradiation of ultraviolet rays. Way. The liquid crystal injection according to claim 31, wherein the liquid crystal is injected by dipping one side of a pair of second sides of the bonded third and fourth substrates into a liquid crystal container containing liquid crystals and sucking air from the other side. A method of manufacturing a panel for inspection of defects in alignment films of a liquid crystal display. 42. The method of claim 41, wherein the liquid crystal is a twisted nematic liquid crystal having a twist angle of about 90 degrees. 42. The method of claim 41, wherein the liquid crystal is a super twisted nematic liquid crystal having a twist angle of about 180 to 270 degrees. 42. The alignment film defect of the liquid crystal display according to claim 41, wherein the suction of the liquid crystal is performed in a state in which the bonded panel has a predetermined inclination angle so that the air intake portion is positioned higher than the liquid crystal injecting portion. Method of manufacturing the inspection panel. 45. The method of claim 44, wherein the suction of the liquid crystal is performed while the panel is placed on a temperature control plate capable of temperature control. 46. The method of claim 45, wherein the temperature control plate has a predetermined inclined surface and includes a container mounting portion capable of containing liquid crystals on a lower side thereof.