JP2009300973A - Liquid crystal panel and apparatus and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal panel the display quality of which can be restrained from being deteriorated even when a defect of a color filter layer is corrected and to provide an apparatus and a method for producing the liquid crystal panel. <P>SOLUTION: The liquid crystal panel is provided with: a pair of transparent substrates; oriented films which are arranged respectively on the pair of transparent substrates and each of which was subjected to rubbing treatment along the predetermined rubbing direction; the color filter layer which is arranged between one transparent substrate and the oriented film adjacent thereto and colored in predetermined colors; and a liquid crystal layer arranged between the pair of transparent substrates so as to be interposed between the oriented films. A defect-corrected portion 50 is arranged on the color filter layer and sides 50a, 50c parallel to the rubbing direction are formed in the defect-corrected portion 50. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid crystal panel, in particular, a liquid crystal panel provided with a color filter layer so that color display is possible, a manufacturing apparatus thereof, and a manufacturing method thereof.

  In recent years, for example, liquid crystal display devices have been widely used in liquid crystal televisions, monitors, mobile phones, and the like as flat panel displays having features such as thinness and light weight compared to conventional cathode ray tubes. In such a liquid crystal display device, a liquid crystal panel having a plurality of pixels is used. In the liquid crystal display device, a display operation is performed by supplying a voltage signal corresponding to the gradation value of the information to be displayed to each of the plurality of pixels, and the information is displayed on the display surface of the liquid crystal panel. It is displayed.

  The liquid crystal panel as described above is provided with an array substrate having switching elements such as thin film transistors (TFTs) and pixel electrodes, and a CF (Color Filter) substrate having a color filter layer. The color filter layer includes red (R), green (G), and blue (B) color filter portions and a black matrix portion that separates these color filter portions. The RGB pixels are respectively configured by the unit, and color display is performed.

  In addition, the color filter layer as described above is generally used for RGB and black matrix portions by using a staining method, a pigment dispersion method, a printing method, or an electrodeposition method on the surface of a transparent substrate such as a glass substrate. These black ink materials are attached to each other. However, it is difficult to prevent defects such as color loss, foreign matter adhesion, and other color filling in the color filter layer by using any of the methods described above. It has been proposed to produce liquid crystal panels by forming layers.

Specifically, in a conventional liquid crystal panel manufacturing apparatus, for example, as described in Patent Document 1 below, the detected defects are removed by irradiating the detected defects with laser light. At the same time, the defect is corrected by applying an appropriate ink material to the removed portion by the ink jet method. Further, in this conventional liquid crystal panel manufacturing apparatus, by applying a laser beam, a coating agent is applied to the removed defect and its periphery, and the coating agent applied to the defect is left leaving the peripheral coating agent. It has been said that the defect repair success rate can be improved by applying the ink material by the ink jet method after the removal.
JP 2007-101809 A

  However, in the conventional liquid crystal panel manufacturing apparatus as described above, the laser light irradiation area is determined so as to simply remove the area surrounding the detected defect, and the defect is removed. I was just there. For this reason, in the conventional liquid crystal panel manufacturing apparatus, the rubbing process is not appropriately performed on the alignment film provided on the color filter layer at the correction portion of the color filter layer and in the vicinity thereof, and the display quality of the liquid crystal panel is deteriorated. There was a risk of causing. In particular, in the conventional liquid crystal panel manufacturing apparatus, when the applied amount of the ink material is inappropriate for the removed portion from which the defect has been removed, the display quality is likely to deteriorate.

  Here, with reference to FIG. 6, problems in the conventional liquid crystal panel manufacturing apparatus will be described in detail.

  FIG. 6 is a diagram for explaining a problem in a conventional liquid crystal panel manufacturing apparatus.

  As shown in FIG. 6A, in the conventional apparatus for manufacturing a liquid crystal panel, defects detected in the color filter layer 61 are removed by irradiating the color filter layer 61 with laser light. 60 is formed in the color filter layer 61. Further, the removal portion 60 is provided in a square shape having sides parallel to, for example, the vertical direction and the horizontal direction of the liquid crystal panel (shown by arrows X and Y in the figure, respectively), and the four sides of the removal portion 60 are provided. Are formed so as to have an angle with respect to the rubbing direction in the rubbing process (shown by an arrow r in FIG. 6A).

  Subsequently, in the conventional liquid crystal panel manufacturing apparatus, the ink material is applied to the removal portion 60 and the correction portion 62 is provided. However, when the ink material is applied, the applied amount of the ink material differs from the normal portion. The ideal state is completely absent. However, in actual operation, the film thickness at the application location may vary depending on the state of the base of the ink application location.

  When the amount of ink material applied is small, for example, as shown in FIG. 6B, the correction portion 62 is lower in height from the transparent substrate 63 than the right and left normal color filter layers 61. Formed in a state. Thus, after the correction portion 62 is formed, in the conventional liquid crystal panel manufacturing apparatus, the transparent electrode 64 and the alignment film 65 are formed on the correction portion 62 and the color filter layer 61 as shown in FIG. The layers are sequentially stacked, and further, a rubbing process is performed on the alignment film 65. That is, in the conventional liquid crystal panel manufacturing apparatus, by rotating a roller (not shown) with respect to the alignment film 65 along a predetermined rubbing direction (shown by an arrow r in FIG. 6C), A rubbing process is performed.

  However, in the conventional liquid crystal panel manufacturing apparatus, since the four sides of the correction portion 62 have an angle with respect to the rubbing direction, the rubbing process is performed as indicated by the arrow r in FIG. In some cases, the rubbing process is not sufficiently performed at the step portion between the correction portion 62 and the color filter layer 61, particularly the portion surrounded by “f” in FIG. For this reason, in the liquid crystal layer provided above this portion f, an abnormality may occur in the alignment of liquid crystal molecules, and in the liquid crystal panel, a bright spot or the like due to the alignment abnormality occurs, resulting in a reduction in display quality. There was a thing.

  Further, as shown in FIG. 6D, when the amount of ink material applied is larger than the appropriate amount, the corrected portion 62 ′ is higher than the right and left normal color filter layers 61 from the transparent substrate 63. It is formed in a state where the height is high. After the correction portion 62 ′ is thus formed, in the conventional liquid crystal panel manufacturing apparatus, as shown in FIG. 6E, the transparent electrode 64 and the alignment film are formed on the correction portion 62 ′ and the color filter layer 61. 65 are sequentially laminated, and further, a rubbing process is performed by rotating a roller (not shown) with respect to the alignment film 65 along a predetermined rubbing direction (shown by an arrow r in FIG. 6 (e)). Done.

  However, in the conventional apparatus for manufacturing a liquid crystal panel, the four sides of the correction portion 62 ′ have an angle with respect to the rubbing direction, so that the rubbing process is performed as shown by the arrow r in FIG. In addition, the rubbing process may not be sufficiently performed at the step portion between the correction portion 62 ′ and the color filter layer 61, particularly the portion surrounded by “f ′” in FIG. For this reason, in the liquid crystal layer provided above the portion f ′, an abnormality may occur in the alignment of liquid crystal molecules. In the liquid crystal panel, a bright spot or the like due to the alignment abnormality occurs, and the display quality deteriorates. There was something to do.

  In view of the above problems, an object of the present invention is to provide a liquid crystal panel, a manufacturing apparatus thereof, and a manufacturing method thereof capable of suppressing deterioration in display quality even when a defect in a color filter layer is corrected. And

In order to achieve the above object, a liquid crystal panel according to the present invention includes a pair of transparent substrates, an alignment film provided on each of the pair of transparent substrates, and subjected to a rubbing process along a predetermined rubbing direction. The color filter layer provided between the pair of one transparent substrate and the alignment film and colored between a predetermined color and the pair of transparent substrates so as to be sandwiched between the alignment films. A liquid crystal panel provided with a liquid crystal layer provided on
The color filter layer is provided with a corrected portion for correcting a defect,
The correction portion is formed with a side parallel to the rubbing direction.

  In the liquid crystal panel configured as described above, by providing a side parallel to the rubbing direction in the correction portion provided in the color filter layer, the inventor of the present invention can correct a defect in the color filter layer. However, it has been found that the display quality can be prevented from deteriorating. That is, the inventor of the present invention provides a removal portion so as to have a side parallel to the rubbing direction when a defect is detected in the color filter layer and the defect is removed. Further, by installing a correction material such as application of ink material on the removed portion to form a correction portion, the parallel portion of the correction portion and the vicinity thereof, regardless of the amount of ink material applied. It was obtained that the rubbing treatment can be appropriately performed and the occurrence of alignment abnormality in the liquid crystal layer can be suppressed. The present invention has been completed based on the above-described knowledge, and can provide a liquid crystal panel capable of suppressing a reduction in display quality even when a defect in a color filter layer is corrected.

  In the liquid crystal panel, the correction portion is preferably formed in a quadrangular shape having two sides parallel to the rubbing direction.

  In this case, the occurrence of orientation abnormality can be further suppressed in the corrected portion and the vicinity thereof, and the display quality can be reliably suppressed from deteriorating.

The liquid crystal panel manufacturing apparatus of the present invention includes a pair of transparent substrates, an alignment film provided on each of the pair of transparent substrates and subjected to a rubbing process along a predetermined rubbing direction, and the one of the pair of ones A liquid crystal provided between the transparent substrate and the alignment film, and a color filter layer colored in a predetermined color, and a liquid crystal provided between the pair of transparent substrates so as to be sandwiched between the alignment films. An apparatus for manufacturing a liquid crystal panel comprising a layer,
In the color filter layer, with respect to the detected defect, a removing unit that removes the defect so that a side parallel to the rubbing direction is formed in the removed portion of the defect;
A correction unit that provides a predetermined correction material to the removed portion removed by the removing unit, thereby setting the removed portion as a corrected portion in which the defect in the color filter layer is corrected; It is a feature.

  In the liquid crystal panel manufacturing apparatus configured as described above, the removal means removes the defects detected in the color filter layer so that the side parallel to the rubbing direction is formed in the defect removal portion. Moreover, the correction means provides a predetermined correction material to the removed portion, so that the removed portion is a corrected portion in which a defect in the color filter layer is corrected. Thereby, unlike the conventional example, it is possible to suppress the display quality from being deteriorated even when the defect of the color filter layer is corrected.

  In the liquid crystal panel manufacturing apparatus, it is preferable that a laser beam irradiation unit for irradiating a laser beam to a defect in the color filter layer is used as the removing unit.

  In this case, the removing means can remove defects in the color filter layer accurately and at high speed.

  In the liquid crystal panel manufacturing apparatus, it is preferable that an ink jet unit that discharges an ink material as the correction material to the removed portion is used as the correction unit.

  In this case, the correction means can easily form the correction portion.

The method for producing a liquid crystal panel of the present invention includes a pair of transparent substrates, an alignment film provided on each of the pair of transparent substrates and subjected to a rubbing process along a predetermined rubbing direction, and the pair of one side A liquid crystal provided between the transparent substrate and the alignment film, and a color filter layer colored in a predetermined color, and a liquid crystal provided between the pair of transparent substrates so as to be sandwiched between the alignment films. A method of manufacturing a liquid crystal panel comprising a layer,
In the color filter layer, with respect to the detected defect, a removal step of removing the defect so that a side parallel to the rubbing direction is formed in the removed portion of the defect;
In the removing step, a predetermined correcting material is provided for the removed removed portion, thereby making the removed portion a corrected portion in which the defect in the color filter layer is corrected. It is characterized by this.

  In the manufacturing method of the liquid crystal panel configured as described above, in the removal step, the defects detected in the color filter layer are removed so that the side parallel to the rubbing direction is formed in the defect removal portion. . Further, in the correction step, a predetermined correction material is provided for the removed portion formed in the removal step, so that the removed portion is a corrected portion in which a defect in the color filter layer is corrected. Thereby, unlike the conventional example, it is possible to suppress the display quality from being deteriorated even when the defect of the color filter layer is corrected.

  ADVANTAGE OF THE INVENTION According to this invention, even when the defect of a color filter layer is corrected, it becomes possible to provide the liquid crystal panel which can suppress that display quality falls, its manufacturing apparatus, and its manufacturing method.

  Hereinafter, preferred embodiments showing a liquid crystal panel, a manufacturing apparatus thereof, and a manufacturing method thereof according to the present invention will be described with reference to the drawings. In addition, the dimension of the structural member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each structural member, etc. faithfully.

  FIG. 1 is a cross-sectional view showing a specific configuration of a liquid crystal panel according to an embodiment of the present invention. In the figure, the liquid crystal panel 1 of the present embodiment includes an array substrate 2 and a CF (Color Filter) substrate 3 provided so as to face each other, and between the array substrate 2 and the CF (Color Filter) substrate 3. A sandwiched liquid crystal layer 4 is provided.

  The array substrate 2 is made of a glass material or a synthetic resin material, and is provided with a pair of transparent substrates 5a. In the array substrate 2, a switching element Sw such as a thin film transistor (TFT) and a pixel electrode 9 are provided for each of red (R), green (G), and blue (B) pixels. Specifically, in the vicinity of the switching element Sw, a data line S1 and a gate electrode Swg arranged in parallel with each other, and an insulating film 6 formed so as to cover the data line S1 and the gate electrode Swg are formed on a transparent substrate. 5a is provided. Further, above the insulating film 6, the semiconductor layer Sw1, the contact layers Sw2, Sw3, the source electrode Sws and the drain electrode Swd, the protective film 7, the interlayer insulating film 8, the pixel electrode 9, and the alignment film 10 of the switching element Sw are provided. They are sequentially stacked.

  The CF substrate 3 is made of a glass material or a synthetic resin material, and is provided with a pair of other transparent substrates 5b. On the transparent substrate 5b, a color filter layer 11 having red, green, and blue color filter portions 11r, 11g, and 11b provided in accordance with RGB pixels and a black matrix portion 11s that separates the RGB pixels. Is formed. A transparent counter (common) electrode 12 and an alignment film 13 are sequentially stacked on the color filter layer 11. In the liquid crystal panel 1, the liquid crystal layer 4 is sandwiched between the alignment films 10 and 13. The alignment films 10 and 13 are rubbed along a predetermined rubbing direction to align liquid crystal molecules (not shown) included in the liquid crystal layer 4 in a predetermined direction.

  Next, with reference to FIG. 2, the manufacturing apparatus of the liquid crystal panel of this embodiment is demonstrated concretely.

  FIG. 2 is a diagram for explaining a main configuration of the liquid crystal panel manufacturing apparatus.

  In FIG. 2, the liquid crystal panel manufacturing apparatus 20 of the present embodiment corrects (repairs) the detected defects in the color filter layer 11, and manufactures the CF substrate 3 on which the normal color filter layer 11 is formed. And a stage 22 on which the transparent substrate 21 to be corrected is placed. That is, in the liquid crystal panel manufacturing apparatus 20, the transparent substrate 21 having the color filter layer 11 in which a defect described later is detected by visual inspection or a known inspection apparatus is placed on the stage 22. In the liquid crystal panel manufacturing apparatus 20, defect position information indicating the position of the detected defect is input to the control unit 30 that controls the driving of each unit, and the control unit 30 receives the input defect position. Based on the information, the detected defects are corrected by performing drive control of each part.

  Further, the liquid crystal panel manufacturing apparatus 20 heats the laser light irradiation means 23 for irradiating the laser light with respect to the defect in the color filter layer 11 and the region irradiated with the laser light by the laser light irradiation means 23. A heating unit 24 and an inkjet unit 25 for applying a correction ink material as a predetermined correction material are provided. In the liquid crystal panel manufacturing apparatus 20, the stage 22 is moved in the X direction and the Y direction (the horizontal direction in the figure and the direction perpendicular to the paper surface in the figure) to adjust the position, and the stage 22. And a base 27 on which the position adjusting means 26 is mounted.

  Further, in the liquid crystal panel manufacturing apparatus 20, a support member 28 that supports the laser light irradiation means 23 and the heating means 24 is attached to the base 27. In addition, an inkjet unit 25 is attached to the support member 28 with a moving unit 29 interposed therebetween, and the inkjet unit 25 is moved in the Z direction (up and down direction in the figure) by the moving unit 29 to be on the stage 22. The distance from the transparent substrate 21 is adjusted.

  The laser beam irradiating means 23 constitutes a removing means for removing defects in the color filter layer 11. In the liquid crystal panel manufacturing apparatus 20, the laser light irradiating means 23 is used so that the color filter layer 11 It is configured so that defects can be accurately and rapidly removed. Further, the laser beam irradiation means 23 removes the detected defect so that a side parallel to the rubbing direction is formed in the removed portion of the defect in the color filter layer 11. Thus, it is possible to suppress the deterioration in display quality caused by the alignment abnormality in the liquid crystal panel 1 (details will be described later).

  The heating unit 24 heats the removed portion formed by the laser beam irradiation unit 23 irradiating the laser beam. The ink unit 25 heats the ink material applied to the removed portion, and the ink material is heated. The solvent contained in the ink is evaporated and the ink material is quickly dried at the removed portion.

  The ink jet means 25 is a correcting means for providing a predetermined correction material to the removed portion formed by the laser beam irradiation means 23 so that the removed portion becomes a corrected portion in which a defect in the color filter layer 11 is corrected. It is composed. That is, the ink jet means 25 is loaded with correction ink materials for individually correcting the RGB color filter portions 11r, 11g, and 11b and the black matrix portion 11s included in the color filter layer 11, respectively. Depending on the system, each ink material can be ejected to a corresponding removal portion to apply (apply) the ink material to the removal portion.

  The control means 30 is provided with a laser light control unit 30a, a heating control unit 30b, an inkjet control unit 30c, and a position control unit 30d. The laser light control unit 30a performs drive control of the laser light irradiation unit 23 based on defect position information input from the outside. That is, the laser light control unit 30a grasps the position of the defect in the color filter layer 11 on the basis of the defect position information, determines a removal portion for removing the defect, and outputs the laser light from the laser light irradiation unit 23. Irradiate.

  Further, the heating control unit 30b grasps the region irradiated with the laser beam based on the defect position information, that is, the position of the removed portion, and controls the driving of the heating unit 24 so that the removed portion is heated. Further, the ink jet control unit 30c grasps the position of the removed portion based on the defect position information, and performs drive control of the ink jet means 25 so that an appropriate ink material is ejected to the removed portion. In addition, the position control unit 30d performs each operation of the position adjustment unit 26 and the moving unit 29 so that the operations of the laser beam irradiation unit 23, the heating unit 24, and the inkjet unit 25 are appropriately performed based on the defect position information. Drive control is performed.

  Here, the specific operation of the liquid crystal panel manufacturing apparatus 20 of the present embodiment configured as described above will be described with reference to FIGS. In the following description, a removal process for removing defects in the color filter layer 11 and a correction process for correcting a removed portion removed in the removal process will be mainly described. Further, in the following description, a case will be described in which a defect detection process for detecting the presence or absence of defects is performed after the color filter layer 11 is formed, and the removal process and the correction process are performed after the defect detection process.

  FIG. 3A to FIG. 3C are diagrams for explaining specific defects in the color filter layer that are each corrected by the manufacturing apparatus. FIG. 4 is a diagram illustrating a specific manufacturing process in the manufacturing apparatus, FIG. 4 (a) is a diagram illustrating a defect removing process in the color filter layer, and FIG. 4 (b) is a removal process. It is a figure explaining the correction process of a part.

  First, a defect in the color filter layer 11 to be corrected by the liquid crystal panel manufacturing apparatus 20 of the present embodiment will be specifically described with reference to FIG.

  As illustrated in FIG. 3, defects generated in the color filter layer 11 are mainly classified into three types. That is, as shown in FIG. 3A, for example, in the green color filter portion 11g, the green ink material is not applied onto the transparent substrate 5b, and the surface of the transparent substrate 5b is exposed. It may occur as a defect of color loss 41.

  In addition, as illustrated in FIG. 3B, foreign matter 42 such as other ink material or dust may adhere on the green color filter portion 11g and may be generated as a defect. In addition, as illustrated in FIG. 3C, other color ink materials may scatter and adhere to the green color filter portion 11 g, and may occur as a defect in the other color filling 43.

  In the liquid crystal panel manufacturing apparatus 20 according to the present embodiment, when the defect illustrated in FIG. 3 is detected by visual inspection or the like and the defect position information is input, each of FIGS. 4A and 4B is performed. The illustrated removal process and correction process are sequentially performed.

  More specifically, as illustrated in FIG. 4A, when it is detected that the foreign matter 42 is present on the color filter portion 11g, the liquid crystal panel manufacturing apparatus 20 uses the laser light irradiation means 23. In order to remove the foreign matter 42, laser light is irradiated so that, for example, a square-shaped removal portion 50 is formed. In this removing step, the laser beam irradiation means 23 removes the foreign matter (defect) 42 in the side parallel to the rubbing direction (shown by an arrow r in the drawing) in the subsequent rubbing process on the alignment film 13. The laser beam is irradiated so as to be formed. That is, the laser beam irradiation unit 23 irradiates the laser beam so that the side 50a and the side 50c are parallel to the rubbing direction among the four sides 50a, 50b, 50c, and 50d of the square-shaped removal portion 50, A removal portion 50 is formed.

  Next, in the liquid crystal panel manufacturing apparatus 20 of the present embodiment, after the heating unit 24 heats the removal portion 50, the inkjet unit 25 discharges the green ink material to the removal portion 50, thereby removing the removal portion 50. As shown in FIG. 4B, the correction portion 55 is formed in the color filter portion 11g by filling with an ink material. The correction portion 55 is formed in the same square shape as the removal portion 50, and has a side 55a and a side 55c parallel to the rubbing direction, and a side 55b and a side 55d orthogonal to the side 55a and the side 55c. Yes. Thereafter, in the liquid crystal panel manufacturing apparatus 20 of the present embodiment, the counter electrode 12 and the alignment film 13 are sequentially formed on the color filter layer 11, and then a rubbing process using a roller (not shown) is applied to the alignment film 13. Against.

  As described above, in the liquid crystal panel manufacturing apparatus 20 of the present embodiment, the laser beam irradiation means (removal means) 23 is formed in the defect removal portion 50 with the sides 50a and 50c parallel to the rubbing direction. Defects detected in the color filter layer 11 are removed. Further, in the liquid crystal panel manufacturing apparatus 20 of the present embodiment, the ink jet means (correcting means) 25 provides an ink material (predetermined correcting material) to the removing portion 50, so that the removing portion 50 is colored. A corrected portion 55 in which a defect in the filter layer 11 is corrected is used. Thereby, in the liquid crystal panel manufacturing apparatus 20 of the present embodiment, unlike the conventional example, it is possible to prevent the display quality from being deteriorated even when the defect of the color filter layer 11 is corrected.

  According to the verification test by the inventor of the present invention, for example, when a color filter layer of about 1.5 μm is formed, as shown in FIG. 6B and FIG. In the conventional equivalent product in which a step portion of 0.4 μm or more occurs between the filter layer and the rubbing process is not sufficiently performed, an abnormality occurs in the alignment of the liquid crystal molecules, and the bright spot resulting from the alignment abnormality As a result, the display quality of the liquid crystal panel deteriorated.

  On the other hand, in the present embodiment product, even when a step portion of 0.4 μm or more occurs between the correction portion and the color filter layer in the vicinity of the side parallel to the rubbing direction of the correction portion and the color filter layer, Since the side of the step portion (boundary between the corrected portion and the color filter layer) is formed on a side parallel to the rubbing direction, the rubbing process could be performed appropriately. As a result, it was possible to prevent the occurrence of abnormalities in the alignment of the liquid crystal molecules, to prevent the occurrence of bright spots due to the abnormal alignment, and to prevent the display quality of the liquid crystal panel from deteriorating.

  The above embodiments are all illustrative and not restrictive. The technical scope of the present invention is defined by the claims, and all modifications within the scope equivalent to the configurations described therein are also included in the technical scope of the present invention.

  For example, in the above description, the removal portion is formed in a square shape having two sides parallel to the rubbing direction, and the square shape having two sides parallel to the rubbing direction is applied by applying an ink material to the removal portion. Although the case where the portion is provided has been described, the present invention is not limited as long as the side parallel to the rubbing direction is provided in the defect correction portion in the color filter layer.

  More specifically, for example, as shown in FIG. 5A, a rectangular removal portion 51 having sides 51a and 51c parallel to the rubbing direction and sides 51b and 51d orthogonal to these sides 51a and 51c is formed. Then, a correction material may be provided on the removed portion 51 to form a rectangular correction portion. Further, as shown in FIG. 5B, a parallelogram-shaped removal portion 52 having sides 52a and 52c parallel to the rubbing direction and sides 52b and 52d parallel to each other is formed, and a correction material is formed on the removal portion 52. May be provided to form a parallelogram-shaped correction portion. Further, as shown in FIG. 5C, a trapezoidal removal portion 53 having sides 53a, 53c, 53b, and 53d parallel to the rubbing direction is formed, and a correction material is provided on the removal portion 53. A trapezoidal correction portion may be formed.

  In addition to the quadrangular shape as described above, the correction portion (removal portion) is formed in another polygon shape such as a triangular shape or other shapes that can have sides parallel to the rubbing direction such as a semicircular shape. You can also.

  However, as in the above embodiment, the case where the correction part is formed in a quadrangular shape having two sides parallel to the rubbing direction can further suppress the occurrence of orientation abnormality in the correction part and the vicinity thereof, This is preferable in that the deterioration in display quality can be reliably suppressed.

  In the above description, the defect detection process for detecting the presence or absence of defects after the formation of the color filter layer is performed, and the removal process and the correction process are performed after the defect detection process. It is not limited. Specifically, for example, after the formation of each color filter portion of RGB, after formation of the counter electrode, after formation of the alignment film, or after formation of the photo spacer for keeping the gap between the pair of transparent substrates constant, the color filter layer The above-described defect detection step may be performed, and the removal step and the correction step may be appropriately performed according to the detection result.

  In the above description, the case where the inkjet unit is used as the correction unit has been described. However, the correction unit of the present invention is not limited to this. Specifically, for example, other methods such as a needle method, a micro dispenser method, film attachment, or color resist recoating / exposure / development can be applied to the correcting means.

  However, the case where the ink jet means is used as the correction means as in the above-described embodiment is preferable in that the correction portion can be easily formed.

  In addition to the above description, depending on the type of the correction material, the correction material may be thermally cured or photocured, for example, by performing baking or light irradiation after the correction step.

  INDUSTRIAL APPLICABILITY The present invention is useful for a liquid crystal panel, a manufacturing apparatus thereof, and a manufacturing method thereof that can suppress deterioration in display quality even when a color filter layer defect is corrected.

It is sectional drawing which shows the specific structure of the liquid crystal panel concerning one Embodiment of this invention. It is a figure explaining the principal part structure of the manufacturing apparatus of the said liquid crystal panel. (A)-(c) is a figure explaining the specific defect in a color filter layer each corrected by the said manufacturing apparatus. It is a figure explaining the specific manufacturing process with the said manufacturing apparatus, (a) is a figure explaining the removal process of the defect in a color filter layer, (b) is a figure explaining the correction process of a removal part. It is. (A)-(c) is a figure explaining the modification of the removal part formed in the said removal process, respectively. It is a figure explaining the problem in the manufacturing apparatus of the conventional liquid crystal panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 4 Liquid crystal layer 5a, 5b A pair of transparent substrate 10, 13 Orientation film 11 Color filter layer 20 Manufacturing apparatus of liquid crystal panel 23 Laser beam irradiation means (removal means)
25 Inkjet means (correction means)
41, 42, 43 Defect 50, 51, 52, 53 Removal part 50a, 50c, 51a, 51c, 52a, 52c, 53a, 53c (Parallel direction is parallel) Side 55 Correction part 55a, 55c (Parallel direction is rubbing) )

Claims (6)

A pair of transparent substrates, an alignment film provided on each of the pair of transparent substrates and subjected to a rubbing process along a predetermined rubbing direction, and provided between the pair of one transparent substrate and the alignment film And a liquid crystal panel comprising a color filter layer colored in a predetermined color and a liquid crystal layer provided between the pair of transparent substrates so as to be sandwiched between the alignment films,
The color filter layer is provided with a corrected portion for correcting a defect,
In the correction portion, a side parallel to the rubbing direction is formed.
A liquid crystal panel characterized by that. The liquid crystal panel according to claim 1, wherein the correction portion is formed in a quadrangular shape having two sides parallel to the rubbing direction. A pair of transparent substrates, an alignment film provided on each of the pair of transparent substrates and subjected to a rubbing process along a predetermined rubbing direction, and provided between the pair of one transparent substrate and the alignment film And a liquid crystal panel manufacturing apparatus comprising: a color filter layer colored in a predetermined color; and a liquid crystal layer provided between the pair of transparent substrates so as to be sandwiched between the alignment films. And
In the color filter layer, with respect to the detected defect, a removing unit that removes the defect so that a side parallel to the rubbing direction is formed in the removed portion of the defect;
A correction unit that provides a predetermined correction material to the removed part removed by the removing unit, thereby making the removed part a corrected part in which the defect in the color filter layer has been corrected. A liquid crystal panel manufacturing apparatus. The liquid crystal panel manufacturing apparatus according to claim 3, wherein the removing unit uses a laser beam irradiation unit that irradiates a laser beam to a defect in the color filter layer. The liquid crystal panel manufacturing apparatus according to claim 3 or 4, wherein the correction means uses an ink jet means for discharging an ink material as the correction material to the removed portion. A pair of transparent substrates, an alignment film provided on each of the pair of transparent substrates and subjected to a rubbing process along a predetermined rubbing direction, and provided between the pair of one transparent substrate and the alignment film And a liquid crystal panel manufacturing method comprising: a color filter layer colored in a predetermined color; and a liquid crystal layer provided between the pair of transparent substrates so as to be sandwiched between the alignment films. And
In the color filter layer, with respect to the detected defect, a removal step of removing the defect so that a side parallel to the rubbing direction is formed in the removed portion of the defect;
In the removing step, a predetermined correcting material is provided for the removed removed portion, thereby making the removed portion a corrected portion in which the defect in the color filter layer is corrected. A method of manufacturing a liquid crystal panel.

Images