JP2015114546A - Liquid crystal panel, manufacturing method of the same, and liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal panel, manufacturing method of the liquid crystal panel, and liquid crystal display device including the liquid crystal panel that can improve production efficiency and obtain stable display definition with high yield and low costs.SOLUTION: In a liquid crystal panel according to the present invention, a color filter substrate 10 comprises: a first transparent substrate 1; a second transparent substrate 2 that is bonded to the first transparent substrate 1 by an adhesion layer 4; a parallax barrier 7 that is arranged between the first and second transparent substrates 1 and 2; and a color filter that is arranged on an opposite side of the parallax barrier 7 of the second transparent substrate 2. After the first and second transparent substrates 1 and 2 bonded by the adhesion layer 4 in a state where a mother substrate are bonded to an array substrate 3 formed on a different mother substrate, the liquid crystal panel is configured to be cut out by a unit of one screen, and the adhesion layer 4 is configured to be away from an end part of the cut-out liquid crystal panel and separatedly arranged for each liquid crystal panel.

Description

  The present invention relates to a liquid crystal panel, a method for manufacturing the liquid crystal panel, and a liquid crystal display device, and more particularly to a parallax barrier type liquid crystal panel.

  2. Description of the Related Art In a liquid crystal display device having a single display screen, a two-screen liquid crystal display device (hereinafter referred to as a two-screen LCD) is known in which a display image viewed from the left direction and a display image viewed from the right direction are different from each other. Yes. This two-screen LCD displays a different screen when viewing the display surface from different positions, such as a driver and a passenger in a car, and a different screen for the left and right eyes of a single observer By doing so, it has been applied to 3D-LCD that performs stereoscopic display.

  These two-screen LCDs are realized by optically separating pixels that display an image into pixels that can be viewed from a specific direction and pixels that cannot be viewed. The direction in which the pixel can be visually recognized (viewing direction) is not limited to the two left and right directions, and can be applied to a multi-screen display device by changing the direction so as to be separated into multiple directions.

  As a means for optically separating the viewing direction, the viewing direction in which the pixel can be visually recognized is separated by a light-shielding film (parallax barrier) in which one opening (translucent portion) is formed corresponding to a pixel performing different display. A parallax barrier method is generally used.

  A general form of the parallax barrier type two-screen LCD includes a conventional liquid crystal display and a parallax barrier. In the two-screen LCD, the opening (translucent portion) formed in the parallax barrier is formed into a slit shape, and controls the light traveling direction. More specifically, a transparent gap with respect to a display in which two types of video having different contents for the left (L) direction and the right (R) direction are alternately displayed for each pixel column on the liquid crystal display. The slit of the parallax barrier is arranged near the boundary between the pixel column for the left direction and the right direction through the layer.

  From the left angle with respect to the slit, the pixels arranged on the right side with respect to the slit are observed, and from the right angle with respect to the slit, the pixels arranged on the left side with respect to the slit are observed. In this way, by providing the parallax barrier, different images can be viewed from different directions on the left and right.

  Note that the direction (angle) at which the different pixels can be seen is determined by the thickness and the pixel pitch of the gap layer disposed between the parallax barrier and the pixels, and the display resolution (pixel pitch) is relative to a predetermined one. Is governed by the thickness of the gap layer. For example, in the case of a 3D (stereoscopic) display with a small parallax, since this angular difference is small, a relatively thick gap layer is used. In the case of a display that displays different images for two observers or for two specific viewing directions that are separated to some extent, the difference in the direction (angle) in which these different pixels can be seen is greatly increased. Therefore, it is necessary to use a relatively thin gap layer.

  In the case of forming a relatively thin gap layer and a parallax barrier, conventionally, a method has been proposed in which a liquid crystal display panel polished with a color filter (CF) side substrate and a glass with a parallax barrier are bonded together via an adhesive layer (for example, Patent Document 1).

  However, in the method of Patent Document 1, after a black matrix, a color material, and the like and a parallax barrier that are to be aligned with each other with high accuracy through a thin gap layer and a parallax barrier are formed on different substrates, respectively. Factors such as alignment accuracy at the time of bonding and the accuracy of the thickness of the adhesive layer, because they are placed opposite to each other, and are placed oppositely via an adhesive in addition to the polished substrate. As a result, there has been a problem that variation in optical characteristics becomes large. As a means for solving these problems, several methods have been proposed as follows.

  In Patent Document 2 and Patent Document 3, a glass substrate on which a parallax barrier is formed and another glass substrate are pasted with an adhesive in a form of sandwiching the parallax barrier, and then, of these two glass substrates One side is polished to form a thin gap layer, and a black matrix, a coloring material, or the like is directly formed on the thin gap layer by patterning. Accordingly, it is possible to form a black matrix, a color material, or the like with high precision alignment with the parallax barrier disposed under the gap layer. In Patent Document 3, the glass substrate side on which the parallax barrier is formed is polished to form a thin gap layer, whereas in Patent Document 2, another glass substrate side to be attached is polished. ing.

  In Patent Document 4, a CF substrate and a TFT glass on which a black matrix, a color material and the like are formed are overlapped to form a cell substrate, and then the CF glass is polished to form a thin gap layer. A parallax barrier is directly patterned on the top. Also in this case, the parallax barrier can be formed by aligning with high accuracy with respect to a black matrix, a color material, or the like disposed under the gap layer.

  Further, in the methods of Patent Document 3 and Patent Document 4, all of the black matrix, the color material, and the parallax barrier are directly formed on the front and back of the gap layer. The reduction in gap accuracy is also eliminated.

JP 2008-8934 A JP 2008-176167 A JP 2008-164702 A JP 2011-99880 A

  In the methods of Patent Document 2 to Patent Document 4, the following problems remain. First, in each of the methods of Patent Document 2 and Patent Document 3, in the state of the mother glass substrate before being bonded to the TFT substrate, another sheet is formed on the thin glass substrate on which the parallax barrier is formed. A glass substrate is bonded to the entire surface of the substrate with an adhesive to form a mother CF substrate. Further, in the state of the mother cell substrate in which the mother CF substrate and the mother TFT substrate are bonded together, a thin glass substrate is disposed inside the cell.

  Therefore, when using a method of applying a pressure after a scribing process that forms a cutting flaw (also referred to as a scribe mark) on the glass surface, which is the most common glass cutting method, and performing a break process on the outside of the cell Even if a cut flaw is formed on the glass substrate to be arranged, the crack starting from the cut flaw does not progress linearly to the thinned glass substrate arranged via the adhesive. As a result, even when the thin glass substrate is cracked or separated without being broken, the linearity of the cut surface is deteriorated.

  In any case, it is difficult to cut with high accuracy at a high yield that is a practical level. That is, it is not easy to divide from the mother glass substrate, and it is difficult to make a plurality of panels from the mother glass substrate. Therefore, in the methods of Patent Document 2 and Patent Document 3, there is a possibility that a single panel with a parallax barrier having the same size as the mother glass substrate can be manufactured without any problem, but the production efficiency is also poor. Since only products having the same size as the mother glass substrate can be manufactured, this is not a realistic manufacturing method.

  Further, in the method of Patent Document 4, in the state of the mother cell substrate in which the mother CF substrate and the mother TFT substrate are bonded together, the mother CF substrate side is composed of only one thin glass substrate. Cutting flaws can be formed on the glass substrate. Therefore, although the problems as in Patent Document 2 and Patent Document 3 described above do not occur, the state of the mother cell substrate, and further after the polarizing plate is attached to the thinned glass substrate side even after being divided into individual cells. In the meantime, since the parallax barrier is exposed to the outermost surface outside the cell, there is a scratch on the parallax barrier layer in the cutting step, in the case of using the vacuum injection method, in the injection step, and further in the polarizing plate attaching step. There is a problem that the display quality is deteriorated due to light leaking from the parallax barrier which is easy to enter and defective, and depending on the degree of the leaked light, it becomes a defective product and the yield decreases.

  The present invention has been made to solve the above-described problems, and is a liquid crystal panel and a liquid crystal panel manufacturing method that can improve production efficiency, obtain high-yield, and stable display quality at a low cost. An object is to provide a method and a liquid crystal display device including a liquid crystal panel.

  A liquid crystal panel according to the present invention includes a color filter substrate having a parallax barrier, an array substrate disposed on the back surface of the color filter substrate, and a liquid crystal sandwiched between the color filter substrate and the array substrate. The color filter substrate is disposed between the first transparent substrate, the second transparent substrate bonded to the first transparent substrate by an adhesive layer, and the first and second transparent substrates. And a color filter disposed on a surface opposite to the parallax barrier of the second transparent substrate, and the liquid crystal panel is bonded to the first and second liquid crystal panels by an adhesive layer in a mother substrate state. After the transparent substrate 2 is attached to the array substrate formed on another mother substrate, it is cut out in units of one screen, and the adhesive layer is separated from the edge of the cut-out liquid crystal panel. And characterized in that it is arranged separately for each liquid crystal panel.

  A method of manufacturing a liquid crystal panel according to the present invention includes a color filter substrate having a parallax barrier, an array substrate disposed on the back surface of the color filter substrate, and a liquid crystal sandwiched between the color filter substrate and the array substrate. A method of manufacturing a parallax barrier type liquid crystal panel, wherein (a) a step of forming a color filter substrate having a structure in which a first and second mother substrates are bonded together, and (b) a first and second mother substrates. A step of forming an array substrate using a mother substrate different from the substrate, (c) a step of bonding the color filter substrate and the array substrate with a gap therebetween, and (d) a step between the color filter substrate and the array substrate. A method of manufacturing a liquid crystal panel, comprising: sealing a liquid crystal in a gap; and (e) cutting out a liquid crystal panel for one screen from the bonded color filter substrate and the array substrate. The step (a) includes (a1) a step of forming a parallax barrier on the first mother substrate or the second mother substrate, and (a2) an adhesive layer formed on the first mother substrate or the second mother substrate. And after the step (a3) and the step (a2), the first and second mother substrates are bonded via an adhesive layer so that the parallax barrier is between the first and second mother substrates. And a step of forming a color filter on a surface opposite to the parallax barrier of the second mother substrate after the step (a4) and the step (a3). In the step (a2), the adhesive layer includes: In the step (c), the surface of the color filter substrate on which the color filter is disposed is attached to the array substrate, and is separated from the edge of the cut out liquid crystal panel and separated for each liquid crystal panel. In e), when cutting The cutting portion and the adhesive layer being characterized in that it does not overlap in plan view.

  According to the liquid crystal panel of the present invention, the adhesive layer is disposed away from the cutting position (that is, the end of the liquid crystal panel after cutting). Therefore, even when singulation is performed by a general cutting method using a cutting method such as a scribing process or a breaking process, the adhesive layer does not prevent cutting. That is, cutting can be performed with high accuracy, and the quality of the liquid crystal panel and the product yield are improved. Moreover, since it is only necessary to arrange the adhesive layer so as not to overlap the cut portion, the above-described effects can be obtained at low cost.

  According to the method for manufacturing a liquid crystal panel according to the present invention, the adhesive layer is disposed away from the cutting position (that is, the end of the liquid crystal panel after cutting). Therefore, even when singulation is performed by a general cutting method using a cutting method such as a scribing process or a breaking process, the adhesive layer does not prevent cutting. That is, cutting can be performed with high accuracy, and the quality of the liquid crystal panel and the product yield are improved. Moreover, since it is only necessary to arrange the adhesive layer so as not to overlap the cut portion, the above-described effects can be obtained at low cost.

FIG. 2 is a plan view and a cross-sectional view of a liquid crystal panel according to Embodiment 1. 3 is a flowchart of a method for manufacturing the liquid crystal panel according to Embodiment 1. 4 is a detailed cross-sectional view of the liquid crystal panel according to Embodiment 1. FIG. 6 is a plan view and a cross-sectional view of a liquid crystal panel according to Embodiment 2. FIG. 6 is a plan view and a cross-sectional view of a liquid crystal panel according to Embodiment 3. FIG. 6 is a plan view and a cross-sectional view of a liquid crystal panel according to Embodiment 4. FIG. 10 is a cross-sectional view of a liquid crystal panel according to Embodiment 5. FIG. 10 is a cross-sectional view of a liquid crystal panel according to Embodiment 5. FIG. 10 is a cross-sectional view of a liquid crystal panel according to Embodiment 6. FIG. 10 is a cross-sectional view of a liquid crystal panel according to Embodiment 6. FIG. 10 is a cross-sectional view of a liquid crystal panel according to Embodiment 7. FIG. 10 is a cross-sectional view of a liquid crystal panel according to Embodiment 7. FIG. It is sectional drawing of the liquid crystal panel which concerns on the premise technique of this invention.

<Prerequisite technology>
Prior to describing an embodiment of a liquid crystal panel according to the present invention, a technique which is a premise of the present invention will be described. FIG. 13 is a cross-sectional view of a liquid crystal panel which is a prerequisite technology of the present invention. Here, in the liquid crystal panel shown in FIG. 13, the first and second transparent substrates 1 and 2 bonded together by the adhesive layer 4 in the state of the mother substrate are bonded to the array substrate 3 using another mother substrate as a base. It is the liquid crystal panel in a state before being cut out in units of one screen at the position of the arrow in the figure after being pressed. Here, the mother substrate is a transparent substrate, for example, mother glass.

  As shown in FIG. 13, the color filter substrate 10 includes an adhesive layer for bonding the first and second transparent substrates 1 and 2 and the first and second transparent substrates 1 and 2 bonded together in a mother substrate state. 4 and a parallax barrier disposed between the first and second transparent substrates 1 and 2. A color filter is disposed on the back side of the color filter substrate 10, that is, on the surface opposite to the parallax barrier of the second transparent substrate 2. The color filter includes black matrices 5a and 5b, color materials 9a, 9b and 9c, a transparent conductive film (not shown), columnar spacers (not shown), and the like. Here, the black matrices 5a and 5b are black matrices outside the display area and inside the display area, respectively. Further, the color materials 9a, 9b, and 9c are, for example, red, green, and blue color materials, respectively.

  In FIG. 13, the array substrate 3 is manufactured using a mother substrate as a base, and TFTs, pixel electrodes, gate wirings, source wirings, etc. (not shown) are formed.

  As shown in FIG. 13, the color filter substrate 10 and the array substrate 3 are bonded together by a seal pattern 8. A liquid crystal 15 is sealed between the color filter substrate 10 and the array substrate 3 by a seal pattern 8.

  A plurality of liquid crystal panels having the above-described configuration are manufactured collectively using a mother substrate as a base. Each liquid crystal panel is cut out in units of one screen at a cutting position indicated by an arrow in FIG. Cutting is performed by forming a cut flaw (also referred to as a scribe mark) on the glass surface (that is, the surface of the first transparent substrate 1), and then applying pressure to break (break process).

  In the base technology, the cutting position and the adhesive layer 4 overlap in plan view. Therefore, even if a cut flaw is formed on the surface of the first transparent substrate 1, the crack starting from the cut flaw does not progress linearly to the second transparent substrate 2 arranged via the adhesive layer 4. As a result, the second transparent substrate 2 may be cracked in an unintended direction. Moreover, even if it could be separated without breaking, there was a problem that the linearity of the cut surface deteriorated. That is, there is a problem that it is difficult to cut with high accuracy and the yield is lowered.

  As described above, in the liquid crystal panel as the prerequisite technology shown in FIG. 13, it is not easy to divide each liquid crystal panel into individual screen units from the mother substrate. It was difficult to manufacture a liquid crystal panel.

<Embodiment 1>
<Configuration>
FIG. 1A and FIG. 1B are a plan view and a cross-sectional view of a liquid crystal panel in this embodiment. In FIG. 1 (a), only the adhesive layer 4, the black matrix 5a, and the display area 20 are drawn for the sake of easy viewing, and other members are not shown. Further, in the liquid crystal panel shown in FIG. 1B, the first and second transparent substrates 1 and 2 bonded together by the adhesive layer 4 in the state of the mother substrate are formed on the array substrate 3 having another mother substrate as a base. It is a liquid crystal panel in a state before being cut out in units of one screen at the position of the arrow in the figure after being pasted.

  Unlike the base technology (FIG. 13), the adhesive layer 4 that bonds the transparent substrate 1 and the transparent substrate 2 does not overlap with the cut portion (the arrow portion in FIG. 1B) in plan view. Since other configurations are the same as those of the base technology, description thereof is omitted.

  The planar shape of the adhesive layer 4 will be described with reference to FIG. The adhesive layer 4 is disposed so as to be separated into liquid crystal panel units and surround the display area 20 without a gap. The adhesive layer 4 is disposed away from the end of the cut out liquid crystal panel.

  In the present embodiment, as an example, as shown in the plan view of FIG. 1A, the adhesive layer 4 is disposed so as to surround the display region 20 without a gap, but does not overlap the cutting position, and the liquid crystal It is not limited to this as long as it is arranged separately for each panel. The material of the adhesive layer 4 is, for example, a sealing material formed in advance in the shape of the adhesive layer 4 or a fluid pressure-sensitive adhesive. The adhesive layer 4 may be made of any material as long as the two bonded substrates can be fixed without deviation in a state where the transparent substrates 1 and 2 are bonded.

  As a material of the parallax barrier 7, a light shielding layer such as a resin material (resin black matrix) in which a black pigment is dispersed or a chromium film (Cr-BM) is used. Also. As a countermeasure against pinholes, the parallax barrier 7 may be composed of two light shielding layers. The detailed structure of the liquid crystal panel in this embodiment will be described later with reference to FIG.

<Manufacturing method>
FIG. 2 is a flowchart of the manufacturing method of the liquid crystal panel in the present embodiment. A method for manufacturing a liquid crystal panel will be described with reference to a cross-sectional view (b) of the liquid crystal panel shown in FIG. 1B and a flowchart of FIG.

  First, in steps S101 to S104, the color filter substrate 10 for a plurality of screens having a configuration in which the first and second mother substrates are bonded together is formed. Here, the first and second mother substrates are the first and second transparent substrates 1 and 2 after being cut for each liquid crystal panel. The first and second mother substrates are mother glass.

  First, the parallax barrier 7 is formed on the second mother substrate (step S101). Then, the adhesive layer 4 is disposed on the first mother substrate or the second mother substrate. Here, the adhesive layer 4 is disposed away from the portion (the portion indicated by the arrow in FIG. 1B) that is cut when the liquid crystal panel is cut out in the subsequent process (step S107). Further, the adhesive layer 4 is arranged separately for each liquid crystal panel. As the adhesive layer 4, for example, a sealing material previously formed in the shape of the adhesive layer 4 in plan view is used.

  Next, in order to protect the parallax barrier 7 formed on the second mother substrate, the first mother substrate is bonded to the parallax barrier surface side with the adhesive layer 4 (step S103).

  Subsequently, in the first and second mother substrates bonded together by the adhesive layer 4 with the parallax barrier 7 interposed therebetween, the surface of the second mother substrate opposite to the surface on which the parallax barrier 7 is formed, Thinned by polishing or the like. In addition, if the 2nd mother board | substrate thinned previously is used, the process of performing this thinning is unnecessary.

  Next, a color filter is formed on the surface of the second glass substrate opposite to the parallax barrier 7 (step S104). In this step, the same processing as that for forming a general color filter substrate is performed, and black matrices 5a and 5b as light shielding layers, red, green and blue color materials 9a, 9b and 9c, and a transparent conductive film (not shown). And a functional film having a necessary function such as a columnar spacer (not shown). Thus, the color filter substrate 10 for a plurality of screens using the first and second mother substrates as a base was formed.

  Note that in the step of forming the color filter (step S104), the first mother substrate is held on the lower side and the process is performed (that is, the second mother substrate is held on the upper side). The mother substrate can ensure the overall strength of the processing substrate and the strength of the stage and the conveyance holding surface. Therefore, it can be handled in the same manner as a conventional process for forming a color filter on a single mother glass.

  Next, the surface of the color filter substrate 10 on which the color filter is formed and the array substrate 3 are bonded together with a seal pattern 8 with a gap (step S105). Here, the array substrate 3 is a general array substrate for a plurality of screens manufactured using a mother substrate as a base.

  Then, a liquid crystal panel for one screen is cut out from the bonded color filter substrate 10 and array substrate 3 (step S106). The cutting position is a position indicated by an arrow in FIG. In this step, as described in the base technology, a break process is performed after the scribe process, and a liquid crystal panel for one screen is cut out.

  Further, the liquid crystal 15 is injected into the gap between the color filter substrate 10 and the array substrate 3 from the liquid crystal injection port which is an opening provided in the seal pattern 8, and the liquid crystal injection port of the seal pattern 8 is sealed (step S107). ). In addition, when arrange | positioning the liquid crystal 15 by dripping, a liquid crystal dripping process is performed before step S105.

  Further, the step of injecting the liquid crystal 15 from the liquid crystal injection port of the seal pattern 8 may be performed before cutting out the liquid crystal panel for one screen as a final shape from the bonded color filter substrate 10 and the array substrate 3. Specifically, first, partial cutting is performed until the liquid crystal inlet provided in the seal pattern 8 is exposed. At this point, the individual liquid crystal panels are not separated. Then, the liquid crystal 15 described in step S107 is injected and sealed simultaneously with respect to the liquid crystal panels for a plurality of screens. Finally, the liquid crystal panel for one screen is cut out as described in step S106.

  Polarizers are attached to the front and back surfaces of individual liquid crystal panels cut out in units of one screen and filled with liquid crystal, as necessary. Thus, the liquid crystal panel in the present embodiment is formed.

  In the base technology (FIG. 13), the cutting position (position indicated by the arrow in FIG. 13) and the adhesive layer 4 overlapped in plan view. On the other hand, in the present embodiment, the adhesive layer 4 is disposed away from the cutting position (that is, the end of the liquid crystal panel after cutting). Therefore, in the present embodiment, even when singulation is performed by a general cutting method using a cutting method such as scribe-break, the adhesive layer 4 does not prevent cutting. That is, cutting can be performed with high accuracy, and the yield of products is improved in the manufacturing process.

  Further, the liquid crystal panel in the present embodiment has a structure in which the parallax barrier 7 is sandwiched between the first and second transparent substrates 1 and 2. Therefore, it can be manufactured in a process that is not different from the LCD manufacturing process using a mother color filter substrate made of a single glass.

  In the present embodiment, the parallax barrier 7 is not exposed on the surface of the liquid crystal panel and is protected by the transparent substrate 1. Therefore, it is possible to prevent the parallax barrier 7 from being damaged in the process of cutting out the liquid crystal panel. Thereby, it is possible to suppress the occurrence of bright spots and the like in the completed liquid crystal panel, and an improvement in display quality is expected.

<Detailed description of LCD panel>
FIG. 3 is a detailed cross-sectional view of the liquid crystal panel in the present embodiment. A TFT (Thin Film Transistor) type two-screen LCD panel will be described as an example of the liquid crystal panel in this embodiment. The liquid crystal panel shown in FIG. 3 includes a TFT array substrate (hereinafter referred to as array substrate 3) on which TFTs are arranged in an array as switching elements, and a color filter substrate 10 on which color filters and the like are formed. Further, in the display area 20, the liquid crystal 15 is disposed in the gap between the array substrate 3 and the color filter substrate 10. The liquid crystal 15 is sealed with a seal pattern 8 that seals a gap between the array substrate 3 and the color filter substrate 10.

  In the display area 20, a large number of columnar spacers 133 are arranged between the array substrate 3 and the color filter substrate 10 in order to keep the distance between the substrates within a certain range. As a material of the liquid crystal 15, a general TN (Twisted Nematic) type liquid crystal material is used as the liquid crystal material. In the present specification, the display area 20 refers to the entire area that overlaps the area where an image is displayed on the liquid crystal panel in plan view.

  The array substrate 3 is an alignment film 112 for aligning liquid crystal on one surface of a glass substrate 111 made of general glass having a thickness of about 0.5 mm to 0.7 mm, which is a transparent substrate, and a liquid crystal provided below the alignment film 112. A pixel electrode 113 that applies a voltage for driving the TFT, a TFT 114 that is a switching element that supplies a voltage to the pixel electrode 113, an insulating film 115 that covers the TFT 114, a plurality of gate wirings 116 that are wirings that supply signals to the TFT 114, and a source wiring 117 And a signal terminal 118 for receiving a signal supplied to the TFT 114 from the outside, a transfer electrode (not shown) for transmitting a signal input from the signal terminal 118 to the counter electrode 123, and the like. In addition, a polarizing plate 134 is provided on the other surface of the glass substrate 111.

  On the other hand, the above-described color filter substrate 10 is disposed on one surface of the transparent substrate 2 made of ultrathin glass having a thickness of about 0.1 mm, and is disposed below the alignment film 122 and on the array substrate 3. The common electrode 123 for driving the liquid crystal by generating an electric field between the pixel electrode 113, the color materials 9a, 9b, 9c provided below the common electrode 123 and the black for shielding light between the adjacent color materials 9a, 9b, 9c. It has a matrix 5b. In addition, a black matrix 5 a is provided to shield the frame area outside the display area 20.

  As the color materials 9a, 9b, and 9c, resins in which pigments and the like are dispersed can be selected, and each function as a filter that selectively transmits light in a specific wavelength range such as red, green, and blue. The color filter is configured by regularly arranging a black matrix 5b and color materials 9a, 9b, and 9c of different colors. A black matrix 5a is arranged in the frame area outside the display area 20. The black matrix 5a is formed over almost the entire frame region of the CF substrate 10, and blocks light transmission in the CF substrate 10 in the frame region unnecessary for display.

  On the other surface of the second transparent substrate 2, a parallax barrier 7, which is a light shielding layer that separates the viewing direction into two directions, is formed. The first transparent substrate 1 that protects the parallax barrier is disposed facing the surface of the second transparent substrate 2 where the parallax barrier 7 is formed. The 1st, 2nd transparent substrates 1 and 2 are bonded together by the contact bonding layer 4 formed in the frame area | region of a panel peripheral part. The adhesive layer 4 is disposed away from the end of the liquid crystal panel. The first transparent substrate 1 is a general glass substrate having a thickness of about 0.5 mm to 0.7 mm.

  As described above, the laminated structure of the transparent substrate 1 and the transparent substrate 1 in which the color materials 9a, 9b, 9c, the black matrices 5a, 5b, and the like are formed on one surface and the parallax barrier 7 is formed on the other surface. Thus, the color filter substrate 10 is configured. Further, a polarizing plate 135 is disposed on the display surface side of the transparent substrate 1.

  In addition, openings that transmit light are regularly formed between the parallax barriers 7. The opening that transmits light and the opening (the color material 9a, 9b, and 9c forming portion) in the black matrix 5b disposed in the pixel have a positional relationship shifted in plan view. By providing the openings of the pair of black matrixes 5b with respect to the openings between the parallax barriers 7, the viewing direction becomes two directions. The opening between the parallax barriers 7 is usually provided in a slit shape. In addition, slit-shaped openings between the parallax barriers 7 are regularly arranged in a stripe pattern in the longitudinal direction of the slit at a ratio of one row to two rows of pixels. Alternatively, as an arrangement of the slits with better visibility, the slits may be alternately shifted by one pixel for each pixel row, and arranged in a checkered pattern.

  Note that a planar positional relationship (in the horizontal direction) of the opening between the parallax barrier 7 and the opening between the black matrix 5b and a second distance corresponding to the distance separating the parallax barrier 7 and the black matrix 5b in the vertical direction. Two viewing directions are determined by the thickness of the transparent substrate 2 (thickness of about 0.1 mm in the present embodiment). If the positional relationship (resolution) in the horizontal direction is constant, the difference in angle between the two viewing directions increases as the thickness of the second transparent substrate 2 decreases.

  In a two-screen LCD for visually recognizing different images in a driver's seat and a passenger's seat for in-vehicle use etc., an appropriate angle of view direction is 20 to 40 degrees. In order to realize this angle within a range of general pixel resolution, it is necessary to select ultrathin glass having a thickness of about 0.05 to 0.1 mm for the second transparent substrate 2. However, the second transparent substrate 2 may have a general thickness of about 0.3 mm depending on the required specifications for the viewing direction and resolution. Therefore, the thickness of the second transparent substrate 2 may be appropriately set within a range of about 0.05 to 0.5 mm according to specifications. Further, as described above, the light shielding layer constituting the parallax barrier 7 may be formed of a two-layer film as appropriate as a countermeasure against pinholes.

  As the light shielding layer constituting the black matrices 5a and 5b and the parallax barrier 7, a metal material using a laminated film of chromium and chromium oxide or a resin material in which black particles are dispersed in a resin (resin black matrix) ) Etc. can be selected. In addition, an overcoat layer made of a transparent resin film may be provided below the alignment film so as to cover the color materials 9a, 9b, 9c and the black matrices 5a, 5b.

  The array substrate 3 and the color filter substrate 10 are bonded together with a seal pattern 8 interposed therebetween. The distance between the array substrate 3 and the color filter substrate 10 is held at a predetermined interval by a columnar spacer 133 disposed in the display region 20. Further, the transfer electrode (not shown) and the common electrode 123 are electrically connected by a transfer material, and a signal input from the signal terminal 118 is transmitted to the common electrode 123. The transfer material can be substituted or omitted by mixing conductive particles or the like in the seal pattern 8, and in this embodiment, the seal pattern 8 in which conductive particles or the like are mixed is used. As shown in FIG. 13, since the seal pattern 8 and the common electrode 123 are in contact with each other, the transfer electrode is disposed so as to overlap the seal pattern 8 in a plane and is provided in contact with the seal pattern 8 so that the transfer electrode The common electrode 123 was electrically connected through the seal pattern 8.

  The liquid crystal display device in this embodiment includes the above-described liquid crystal panel, a control board 136 that generates a drive signal for driving the liquid crystal panel, and an FFC (Flexible Flat Cable) that electrically connects the control board 136 to a signal terminal 118. 137, a backlight serving as a light source (usually disposed on the back surface of the array substrate 3 opposite to the color filter substrate 10 side serving as a display surface, but not shown in FIG. 3). Further, these members are housed in a housing having the entire display area 20 opened.

<Effect>
The liquid crystal panel in the present embodiment includes a color filter substrate 10 having a parallax barrier 7, an array substrate 3 disposed on the back surface of the color filter substrate 10, and a liquid crystal sandwiched between the color filter substrate 10 and the array substrate 3. The color filter substrate 10 includes a first transparent substrate 1 and a second transparent substrate 2 bonded to the first transparent substrate 1 with an adhesive layer 4. A parallax barrier 7 disposed between the first and second transparent substrates 1 and 2, and a color filter disposed on a surface opposite to the parallax barrier 7 of the second transparent substrate 2, In the liquid crystal panel, after the first and second transparent substrates 1 and 2 bonded together by the adhesive layer 4 in the state of the mother substrate are bonded to the array substrate 3 formed on another mother substrate, the screen unit Cut out with Are as hereinbefore, the adhesive layer 4 is away from the end of the cut out liquid crystal panels, and characterized in that it is arranged separately for each liquid crystal panel.

  Therefore, in the present embodiment, the adhesive layer 4 is disposed away from the cutting position (that is, the end of the cut liquid crystal panel). Therefore, in the present embodiment, even when singulation is performed by a general cutting method using a cutting method such as a scribing process and a breaking process, the adhesive layer 4 does not prevent cutting. That is, cutting can be performed with high accuracy, and the quality of the liquid crystal panel and the product yield are improved. Further, in the present embodiment, it is only necessary to arrange the adhesive layer 4 so as not to overlap with the cutting position, and thus the above-described effects can be obtained at low cost.

  Furthermore, the liquid crystal panel in the present embodiment has a structure in which the parallax barrier 7 is sandwiched between the first and second transparent substrates 1 and 2. Therefore, it can be manufactured in a process that is not different from the LCD manufacturing process using a mother color filter substrate made of a single glass.

  In the present embodiment, the parallax barrier 7 is not exposed on the surface of the liquid crystal panel and is protected by the transparent substrate 1. Therefore, it is possible to prevent the parallax barrier 7 from being damaged in the process of cutting out the liquid crystal panel. Thereby, it is possible to suppress the occurrence of bright spots and the like in the completed liquid crystal panel, and an improvement in display quality is expected.

  Further, in the liquid crystal panel according to the present embodiment, the adhesive layer 4 is disposed so as to surround the display area 20 for displaying an image in a plan view and is not disposed in the display area 20 in a plan view. .

  Therefore, in the liquid crystal panel according to the present embodiment, since the adhesive layer 4 and the display region 20 do not overlap in plan view, the image by the adhesive layer 4 is compared with the case where the adhesive layer 4 and display region 20 overlap in plan view. It is possible to prevent light absorption and coloring of the image light by the adhesive layer 4.

  The liquid crystal display device according to the present embodiment includes a liquid crystal panel, a backlight disposed on the back of the liquid crystal panel, a control board that generates a drive signal for driving the liquid crystal panel, a liquid crystal panel, a backlight, and a drive A housing for housing the substrate.

  Therefore, since the yield of the liquid crystal panel in this embodiment is improved in the manufacturing process, the yield can be improved in the manufacturing process of a liquid crystal display device including the liquid crystal panel.

  In addition, the liquid crystal panel manufacturing method according to the present embodiment includes a color filter substrate 10 having a parallax barrier 7, an array substrate 3 disposed on the back surface of the color filter substrate 10, and a space between the color filter substrate 10 and the array substrate 3. A parallax barrier type liquid crystal panel comprising: a liquid crystal 15 sandwiched between: (a) a step of forming a color filter substrate 10 having a configuration in which first and second mother substrates are bonded together; (B) a step of forming the array substrate 3 using a mother substrate different from the first and second mother substrates as a base, and (c) a step of bonding the color filter substrate 10 and the array substrate 3 with a gap therebetween. (D) a step of sealing the liquid crystal 15 in the gap between the color filter substrate 10 and the array substrate 3, and (e) one from the bonded color filter substrate 10 and the array substrate 3. A liquid crystal panel manufacturing method comprising: cutting out a liquid crystal panel for a surface, wherein step (a) includes: (a1) forming a parallax barrier 7 on the first mother substrate or the second mother substrate And (a2) the step of disposing the adhesive layer 4 on the first mother substrate or the second mother substrate, and (a3) the parallax barrier 7 between the first and second mother substrates after the step (a2). After the step of bonding the first and second mother substrates through the adhesive layer 4 and the step (a4), the second mother substrate is opposite to the parallax barrier 7. Forming a color filter on the surface, and in step (a2), the adhesive layer 4 is disposed apart from the edge of the cut out liquid crystal panel and separately for each liquid crystal panel, and the step (c) ), The color of the color filter substrate 10 Filter is placed face attached to the array substrate 3, in step (e), characterized in that it does not overlap in plan view and the adhesive layer 4 and the cutting portion to be cut when cutting.

  Therefore, in the present embodiment, the adhesive layer 4 is disposed away from the cutting position (that is, the end of the liquid crystal panel after cutting). Therefore, in the present embodiment, even when singulation is performed by a general cutting method using a cutting method such as a scribing process and a breaking process, the adhesive layer 4 does not prevent cutting. That is, cutting can be performed with high accuracy, and the yield of products is improved in the manufacturing process.

  Furthermore, the liquid crystal panel in the present embodiment has a structure in which the parallax barrier 7 is sandwiched between the first and second transparent substrates 1 and 2. Therefore, it can be manufactured in a process that is not different from the LCD manufacturing process using a mother color filter substrate made of a single glass.

  In the present embodiment, the parallax barrier 7 is not exposed on the surface of the liquid crystal panel and is protected by the transparent substrate 1. Therefore, it is possible to prevent the parallax barrier 7 from being damaged in the process of cutting out the liquid crystal panel. Thereby, it is possible to suppress the occurrence of bright spots and the like in the completed liquid crystal panel, and an improvement in display quality is expected.

<Embodiment 2>
<Configuration>
FIG. 4A and FIG. 4B are a plan view and a cross-sectional view of the liquid crystal panel in this embodiment. In FIG. 4 (a), only the adhesive layer 4, the black matrix 5a, and the display area 20 are drawn for the sake of easy viewing, and other members are not shown.

  Unlike Embodiment 1 (FIG. 1B), the liquid crystal panel in this embodiment has an opening for deaeration in the adhesive layer 4 for bonding the first transparent substrate 1 and the second transparent substrate 2 together. Since the other configuration is the same as that of the first embodiment, the description thereof is omitted.

  In the present embodiment, a sealing material having a shape surrounding the display region 20 is used as the adhesive layer 4. The sealing material is provided with a deaeration hole (opening 4a). The reason why the opening 4a is provided in the adhesive layer 4 will be described below.

  When the first transparent substrate 1 and the second transparent substrate 2 are bonded together, if the adhesive layer 4 does not include the opening 4a (that is, the adhesive layer 4 has a closed shape), the first transparent substrate 1 and the second transparent substrate 2 are bonded together. The portion sealed by the adhesive layer 4 between the substrate 1 and the second transparent substrate 2 becomes atmospheric pressure by the air layer. Then, in the step of injecting the liquid crystal 15, when the liquid crystal panel is held in a vacuum, a large pressure difference is generated between the inside and the outside of the adhesive layer 4.

  As described above, when a large pressure difference is generated between the inside and the outside of the adhesive layer 4, a phenomenon called seal puncture may occur. Seal puncture is a phenomenon in which the adhesive layer 4 is broken or deformed. When seal puncture occurs, the adhesive layer 4 may enter the display region 20. In that case, unevenness occurs in the display image due to the difference in refractive index between the adhesive layer 4 and the air layer, and the display quality deteriorates. In addition, when seal puncture occurs, the bonding structure of the first transparent substrate 1 and the second transparent substrate 2 may be distorted, and the inter-substrate gap (inter-substrate distance) may become non-uniform. Even in that case, the display quality is lowered.

  Therefore, in the present embodiment, it is possible to eliminate the pressure difference between the inside and the outside of the adhesive layer 4 by providing the adhesive layer 4 with the opening portion 4a for deaeration. Occurrence of the above-described seal puncture can be prevented by eliminating the pressure difference between the inside and the outside of the adhesive layer 4.

<Effect>
In the liquid crystal panel according to the present embodiment, the adhesive layer 4 includes an opening 4a for deaeration.

  Therefore, the adhesive layer 4 is provided with the degassing opening 4a, thereby suppressing the occurrence of a pressure difference between the inside and the outside of the adhesive layer 4 and preventing the occurrence of seal puncture.

<Embodiment 3>
<Configuration>
FIG. 5A and FIG. 5B are a plan view and a cross-sectional view of the liquid crystal panel in this embodiment. In FIG. 5 (a), only the adhesive layer 4, the black matrix 5a, and the display region 20 are illustrated for ease of viewing, and other members are not illustrated.

  The first embodiment (FIG. 1B) differs in the distance between the first transparent substrate 1 and the second transparent substrate 2 (that is, the thickness of the adhesive layer 4). Since it is the same, description is abbreviate | omitted.

  In the present embodiment, a resin black matrix is used as the material for the parallax barrier 7. Further, a pressure-sensitive adhesive having fluidity is used as the adhesive layer 4. As shown in FIG. 5B, in the liquid crystal panel in the present embodiment, the adhesive layer 4 is not disposed between the parallax barrier 7 and the first transparent substrate 1. Further, the adhesive layer 4 is not disposed between the parallax barrier 7 and the second transparent substrate 2. That is, the parallax barrier 7 and the first and second transparent substrates 1 and 2 are in direct contact with each other. Therefore, the distance between the first transparent substrate 1 and the second transparent substrate 2 is defined by the thickness of the parallax barrier 7.

<Manufacturing method>
The manufacturing method of the liquid crystal panel in the present embodiment will be described using the flowchart (FIG. 2) used in the first embodiment. Only the manufacturing steps different from those of the first embodiment will be described. In step S102 of the flowchart of FIG. 2, an adhesive material is disposed on the first transparent substrate 1 or the second transparent substrate 2 as the adhesive layer 4 so as to surround the display area 20.

  Then, in step S103 of the flowchart of FIG. 2, the first transparent substrate 1 and the second transparent substrate 2 are bonded together while applying a slightly higher pressure uniformly. At this time, the pressure-sensitive adhesive material (that is, the adhesive layer 4) is pushed out between the parallax barrier 7 and the first transparent substrate 1, whereby the parallax barrier 7 and the transparent substrate 1 are in direct contact with each other. That is, when the first transparent substrate 1 and the second transparent substrate 2 are bonded together, the parallax barrier 7 functions as a spacer, whereby the thickness of the adhesive layer 4 is defined.

  Since step S101 and steps S104 to S107 in FIG. 2 are the same as those in the first embodiment, description thereof is omitted.

<Effect>
In the liquid crystal panel according to the present embodiment, the adhesive layer 4 is not formed between the first transparent substrate 1 and the parallax barrier 7 and between the second transparent substrate 2 and the parallax barrier 7. The parallax barrier 7 functions as a spacer between the second transparent substrates 1 and 2 so that the thickness of the adhesive layer 4 is defined.

  Therefore, by making the parallax barrier 7 function as a spacer, the distance between the first and second transparent substrates 1 and 2 becomes uniform. Therefore, it is possible to suppress the occurrence of unevenness such as interference fringes in the display image. The structure of the liquid crystal panel in the present embodiment is such that the parallax barrier 7 and the first transparent substrate 1 are in direct contact with each other when the first and second transparent substrates 1 and 2 are bonded together via the adhesive layer 4. Can be obtained relatively easily.

<Embodiment 4>
<Configuration>
FIG. 6A and FIG. 6B are a plan view and a cross-sectional view of the liquid crystal panel in this embodiment. In FIG. 6 (a), only the adhesive layer 4, the black matrix 5a, the defense wall 7a, and the display region 20 are drawn for ease of viewing, and other members are not shown.

  In contrast to the liquid crystal panel in the third embodiment (FIG. 5B), the liquid crystal panel in the present embodiment further includes a protective wall 7a between the first and second transparent substrates 1 and 2. Since other configurations are the same as those of the third embodiment, description thereof is omitted. The defense wall 7 a is formed of the same material as the parallax barrier 7. As shown in FIG. 6A, the defense wall 7 a is disposed inside the adhesive layer 4 so as to surround the display area 20.

<Manufacturing method>
The manufacturing method of the liquid crystal panel in the present embodiment will be described using the flowchart (FIG. 2) used in the first embodiment. Only the manufacturing steps different from those of the first embodiment will be described.

  In step S101 of the flowchart of FIG. 2, when forming the parallax barrier 7 on the second mother substrate, the protective wall 7a is simultaneously formed of the same material. As shown in FIG. 6A, the defense wall 7 a is arranged outside the parallax barrier 7 so as to surround the display area 20. Next, in step S102 of FIG. 2, the adhesive layer 4 is disposed outside the defense wall 7a.

  Then, in step S103 of FIG. 2, when the first and second mother substrates are bonded together, the protective wall 7a is arranged to prevent the adhesive layer 4 from entering the display area 20 in plan view. Is done.

  Note that steps S104 to S107 in FIG.

<Effect>
In the process of forming the parallax barrier 7 on the first mother substrate or the second mother substrate in the method of manufacturing the liquid crystal panel according to the present embodiment, the outer periphery of the parallax barrier 7 is made of the same material as the parallax barrier 7 with a protective wall. In the step of bonding the first and second mother substrates through the adhesive layer 4 so that the parallax barrier 7 is located between the first and second mother substrates, the protective wall 7a is the adhesive layer. 4 is suppressed from entering the display area 20 in a plan view.

  Therefore, by disposing the protective wall 7 on the outer periphery of the parallax barrier 7, in the step of bonding the first and second mother substrates with the adhesive layer 4, the adhesive layer 4 enters the display region 20 in plan view. It is possible to suppress. Therefore, since the adhesive layer 4 and the display region 20 do not overlap in plan view, the absorption of the image light by the adhesive layer 4 and the image by the adhesive layer 4 are compared with the case where the adhesive layer 4 and the display region 20 overlap in plan view. It is possible to prevent coloring to light. That is, the display quality of the liquid crystal panel is improved.

  Furthermore, in this embodiment, since the defense wall 7a is formed simultaneously with the parallax barrier 7, the number of steps does not increase. Therefore, the lead time is not increased and the cost is not increased in the manufacturing process.

<Embodiment 5>
<Configuration>
FIG. 7 is a cross-sectional view before cutting the liquid crystal panel in the present embodiment. The liquid crystal panel in the present embodiment further includes a conductive member 14 at a cut portion indicated by an arrow between the first and second transparent substrates 1 and 2. Since other configurations are the same as those in the second embodiment or the third embodiment, description thereof is omitted.

<Manufacturing method>
The manufacturing method of the liquid crystal panel in the present embodiment will be described using the flowchart (FIG. 2) used in the first embodiment. Only the manufacturing steps different from those of the first embodiment will be described.

  In the manufacturing process of the liquid crystal panel in the present embodiment, the first mother substrate (i.e., the first mother substrate (i.e., the first mother substrate)) is performed before the step of bonding the first and second mother substrates with the adhesive layer 4 (step S <b> 103 in the flowchart of FIG. 2). The conductive member 14 is arranged at the cutting position of the transparent substrate 1). The arrangement of the conductive member 14 is performed, for example, by a lamination method. And after arrange | positioning the conduction member 14, the front-end | tip of the conduction member 14 contact | abuts to a 2nd mother board | substrate by bonding the 1st, 2nd mother board | substrate with the contact bonding layer 4 in step S103.

  Note that the conductive member 14 may be disposed on the second mother substrate (that is, the second transparent substrate 2) and bonded.

  In step S107 of FIG. 2, a break process is performed when individual liquid crystal panels are cut out from the mother substrate. As shown in FIG. 7, by disposing the conductive member 14 at the cutting position, the force applied to the first mother substrate (first transparent substrate 1) during the break treatment causes the second mother substrate (second The transparent substrate 2) is efficiently transmitted. The shape of the conductive member 14 is preferably a pointed shape toward the second transparent substrate 2 as shown in FIG.

  Further, in the present embodiment, the conductive member 14 may be disposed at a cut portion indicated by an arrow between the second transparent substrate 2 and the array substrate 3 as shown in FIG. In this case, in the step of forming the array substrate 3 using the mother substrate as a base, for example, in the step of arranging the columnar spacers, the conductive member 14 is simultaneously arranged at the cutting position. In a state where the color filter substrate 10 and the array substrate 3 are bonded together, the conductive member 14 disposed on the array substrate 3 contacts the second transparent substrate 2.

  In step S107 of FIG. 2, a break process is performed when individual liquid crystal panels are cut out from the mother substrate. As shown in FIG. 8, by disposing the conductive member 14 at the cutting position, the force applied to the array substrate 3 during the break process is efficiently transmitted to the second mother substrate (second transparent substrate 2). . The shape of the conductive member 14 is preferably a pointed shape toward the second transparent substrate 2 as shown in FIG.

<Effect>
In the method for manufacturing a liquid crystal panel according to the present embodiment, the step of forming the color filter substrate 10 having a configuration in which the first and second mother substrates are bonded together is performed by the parallax barrier 7 between the first and second mother substrates. Step of disposing the conductive member 14 on the cut portion of the surface of the first mother substrate on the parallax barrier 7 side before the step of bonding the first and second mother substrates through the adhesive layer 4 In the state where the first and second mother substrates are bonded together, the leading end of the conductive member 14 is in contact with the second mother substrate.

  Therefore, by disposing the conductive member 14 at the cutting position, the force applied to the first mother substrate (first transparent substrate 1) during the break process of cutting out the individual liquid crystal panels is applied to the second mother substrate (first mother substrate (first transparent substrate 1)). It is efficiently transmitted to the second transparent substrate 2). Therefore, it is possible to perform cutting with high accuracy while suppressing the occurrence of cracks and chips on the second mother substrate.

  In the method for manufacturing a liquid crystal panel according to the present embodiment, the step of forming the array substrate 3 using the mother substrate different from the first and second mother substrates as a base is conducted to a cut portion on the surface of the array substrate 3. A step of arranging the member 14 is provided, and the leading end of the conductive member 14 is in contact with the second mother substrate in a state where the color filter substrate 10 and the array substrate 3 are bonded together.

  Therefore, by disposing the conductive member 14 at the cutting position, the force applied to the array substrate 3 during the breaking process of cutting out the individual liquid crystal panels is efficiently applied to the second mother substrate (second transparent substrate 2). Communicate well. Therefore, it is possible to perform cutting with high accuracy while suppressing the occurrence of cracks and chips on the second mother substrate. Further, in the step of forming columnar spacers or the like on the array substrate 3, the conductive member 14 can be disposed without increasing the number of steps by forming the conductive member 14 at the same time. That is, there is an advantage that the lead time in the manufacturing process is shortened.

<Embodiment 6>
<Configuration>
FIG. 9 is a cross-sectional view before cutting the liquid crystal panel in the present embodiment. In the liquid crystal panel according to the present embodiment, a scribe mark 2 a is formed on the surface of the second transparent substrate 2. That is, the scribe mark 2a is formed on the surface of the second transparent substrate 2 on the first transparent substrate 1 side at the cut portion indicated by the arrow. Since other configurations are the same as those in the second embodiment or the third embodiment, description thereof is omitted.

<Manufacturing method>
The manufacturing method of the liquid crystal panel in the present embodiment will be described using the flowchart (FIG. 2) used in the first embodiment. Only the manufacturing steps different from those of the first embodiment will be described.

  In step S101, after the parallax barrier 7 is formed on the second mother substrate (that is, the second transparent substrate 2), in step S103, before the first and second transparent substrates 1 and 2 are bonded together, The scribing process is performed on the surface on the same side as the parallax barrier 7 at the cutting position of the transparent substrate 2 to form the scribe mark 2a. Other steps are the same as those in the second embodiment or the third embodiment, and thus description thereof is omitted.

  In the present embodiment, as shown in FIG. 10, the scribe mark 2 a may be formed by performing a scribe process on the surface opposite to the parallax barrier 7 at the cutting position of the second transparent substrate 2. In this case, after the color filter is formed on the second transparent substrate 2 in step S104 of FIG. 2, the scribe mark 2a is formed on the surface of the color filter.

<Effect>
In the method for manufacturing a liquid crystal panel according to the present embodiment, the step of forming the color filter substrate 10 having a configuration in which the first and second mother substrates are bonded together is performed by the parallax barrier 7 between the first and second mother substrates. The method further includes a step of scribing the cut portion of the second mother substrate before the step of bonding the first and second mother substrates through the adhesive layer 4 so as to come to (1).

  Therefore, by forming the scribe mark 2a on the second mother substrate (that is, the second transparent substrate 2), when the liquid crystal panel is cut out, a break process can be performed with a smaller pressure. Since the break process can be performed with a smaller pressure, it is possible to prevent the first mother substrate (that is, the first transparent substrate 1) from being cracked or chipped during the break process.

<Embodiment 7>
FIG. 11 is a cross-sectional view of the liquid crystal panel in this embodiment before cutting. The liquid crystal panel in this embodiment has a structure in which FIGS. 7 and 10 are combined. In other words, the liquid crystal panel according to the present embodiment includes the conductive member 14 at the cut portion indicated by the arrow between the first and second transparent substrates 1 and 2, and the array substrate 3 side of the second transparent substrate 2. The scribe mark 2a is formed on the surface of the.

  In the present embodiment, the break pressure applied to the surface of the first transparent substrate 1 is more efficiently transmitted to the scribe marks 2 a formed on the surface of the transparent substrate 2 on the array substrate 3 side via the conductive member 14. . Therefore, the second transparent substrate 2 can be divided with higher accuracy.

  In the present embodiment, the conductive member 14 only needs to function to assist the division by the scribe mark 2a. Therefore, it is not necessary to apply pressure locally to the second transparent substrate 2, and there is no need to make the second transparent substrate 2 side extremely sharp like the conductive member 14 shown in FIG. .

  Further, the liquid crystal panel in this embodiment may have a configuration in which FIGS. 8 and 9 are combined as shown in FIG. In other words, the liquid crystal panel according to the present embodiment includes the conductive member 14 at the cut portion indicated by the arrow between the second transparent substrate 2 and the array substrate 3, and the parallax barrier 7 side of the second transparent substrate 2. It is good also as a structure by which the scribe mark 2a was formed in the surface.

  In the case where the liquid crystal panel is configured as shown in FIG. 12, the conductive member 14 may function in order to assist the division by the scribe mark 2a. Therefore, it is not necessary to apply pressure locally to the second transparent substrate 2, and there is no need to make the second transparent substrate 2 side extremely sharp like the conductive member 14 shown in FIG. .

<Effect>
As in the present embodiment, the conductive member 14 is disposed on one surface of the second transparent substrate 2 and the scribe mark 2a is formed on the other surface, thereby cracking the first and second mother substrates. It is possible to perform cutting with higher accuracy by suppressing the occurrence of chipping.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  1 1st transparent substrate, 2nd transparent substrate, 2a scribe mark, 3 array substrate, 4 adhesive layer, 5a, 5b black matrix, 7 parallax barrier, 8 seal pattern, 9a, 9b, 9c color material, 10 color Filter substrate, 14 conductive member, 15 liquid crystal, 20 display area.

Claims (10)

A color filter substrate having a parallax barrier, an array substrate disposed on a back surface of the color filter substrate, a liquid crystal sandwiched between the color filter substrate and the array substrate,
A parallax barrier type liquid crystal panel comprising:
The color filter substrate is
A first transparent substrate;
A second transparent substrate bonded to the first transparent substrate by an adhesive layer;
A parallax barrier disposed between the first and second transparent substrates;
A color filter disposed on a surface of the second transparent substrate opposite to the parallax barrier;
With
In the liquid crystal panel, after the first and second transparent substrates bonded together by the adhesive layer in the state of a mother substrate are bonded to the array substrate formed on another mother substrate, the liquid crystal panel is displayed in units of one screen. It was cut out,
The adhesive layer is arranged apart from the cut out end portion of the liquid crystal panel and separately for each liquid crystal panel,
LCD panel. The adhesive layer is disposed so as to surround the periphery of a display region for displaying an image in a plan view, and is not disposed in the display region in a plan view.
The liquid crystal panel according to claim 1. The adhesive layer includes an opening for deaeration,
The liquid crystal panel according to claim 2. The adhesive layer is not formed between the first transparent substrate and the parallax barrier and between the second transparent substrate and the parallax barrier, and between the first and second transparent substrates. The parallax barrier functions as a spacer, whereby the thickness of the adhesive layer is defined,
The liquid crystal panel according to any one of claims 1 to 3. A liquid crystal panel according to any one of claims 1 to 4,
A backlight disposed on the back of the liquid crystal panel;
A control board for generating a drive signal for driving the liquid crystal panel;
A housing for housing the liquid crystal panel, the backlight and the control board;
Comprising
Liquid crystal display device. A color filter substrate having a parallax barrier, an array substrate disposed on a back surface of the color filter substrate, a liquid crystal sandwiched between the color filter substrate and the array substrate,
A method of manufacturing a parallax barrier liquid crystal panel comprising:
(A) forming a color filter substrate having a configuration in which the first and second mother substrates are bonded together;
(B) forming an array substrate using a mother substrate different from the first and second mother substrates as a base;
(C) bonding the color filter substrate and the array substrate with a gap therebetween;
(D) sealing a liquid crystal in a gap between the color filter substrate and the array substrate;
(E) cutting out a liquid crystal panel for one screen from the bonded color filter substrate and array substrate;
A method of manufacturing a liquid crystal panel comprising:
The step (a)
(A1) forming the parallax barrier on the first mother substrate or the second mother substrate;
(A2) disposing an adhesive layer on the first mother substrate or the second mother substrate;
(A3) After the step (a2), the first and second mother substrates are bonded via the adhesive layer so that the parallax barrier is between the first and second mother substrates. Process,
(A4) after the step (a3), forming a color filter on the surface of the second mother substrate opposite to the parallax barrier;
With
In the step (a2), the adhesive layer is arranged apart from the cut out end portion of the liquid crystal panel and separately for each liquid crystal panel,
In the step (c), the surface of the color filter substrate on which the color filter is disposed is attached to the array substrate,
In the step (e), the cut portion that is cut when cutting out and the adhesive layer do not overlap in plan view,
A method for manufacturing a liquid crystal panel. In the step (a1), a protective wall is formed on the outer periphery of the parallax barrier with the same material as the parallax barrier,
In the step (a3), the defense wall suppresses the adhesive layer from entering the display area in a plan view.
The manufacturing method of the liquid crystal panel of Claim 6. The step (a)
Before the step (a3), further comprising a step of disposing a conductive member on the cut portion of the parallax barrier side surface of the first mother substrate,
In the state where the first and second mother substrates are bonded together, the leading end of the conductive member is in contact with the second mother substrate.
The manufacturing method of the liquid crystal panel of Claim 6 or Claim 7. The step (b)
Providing a conductive member on the cut portion of the array substrate surface;
In the state where the color filter substrate and the array substrate are bonded together, a tip of the conductive member is in contact with the second mother substrate.
The manufacturing method of the liquid crystal panel of Claim 6 or Claim 7. The step (a)
Before the step (a3), further comprising a step of scribing the cut portion of the second mother substrate,
The manufacturing method of the liquid crystal panel as described in any one of Claims 6-9.

Images