JP2011081230A - Method for manufacturing liquid crystal display device, liquid crystal display device, and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To equalize a distance between a liquid crystal layer and a parallax dividing section in each of a plurality of cells. <P>SOLUTION: A method for manufacturing a liquid crystal display device having liquid crystal cells and parallax dividing sections stuck to the liquid crystal cells, includes: a liquid cell group forming step of arranging a first substrate and a second substrate opposite each other and sealing a liquid crystal member therebetween to form a liquid crystal cell group comprising a plurality of the liquid cells; a thinning step of thinning the thickness of the first substrate in the form of the liquid crystal cell group; a board thickness measuring step of measuring the thickness of the thinned first substrate; a distance correction step of correcting the distance between the first substrate and the parallax dividing section in each liquid crystal cell based on the measured thickness of the first substrate; a sticking step of sticking the first substrate and the parallax dividing section; and a dividing step of dividing the liquid cell group into a plurality of the liquid cells. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a liquid crystal display device, a liquid crystal display device, and an electronic apparatus.

  A known liquid crystal display device includes a liquid crystal cell in which a liquid crystal layer is provided between an element substrate and a counter substrate, and a barrier mask substrate attached to the liquid crystal cell. In the liquid crystal display device, two images are displayed in different directions by overlapping a barrier mask substrate on which a barrier layer (parallax barrier) having an opening is formed at a certain interval (distance) on the surface of a liquid crystal cell. It can be displayed at the same time. This utilizes the fact that different pixels are shaded by the parallax barrier when the viewing angle is changed. Patent Document 1 describes a three-dimensional image display device capable of performing a stereoscopic display using two images displayed in different directions. In addition, by reducing the distance between the display pixel and the parallax barrier, the display directions of the two images can be made greatly different. Accordingly, for example, it is possible to configure so that different observers can visually recognize the two images separately from the oblique left and right directions (that is, so that two screens can be displayed). In this case, in order to shorten the distance between the liquid crystal display pixel and the parallax barrier, the glass substrate (opposing substrate) on the parallax barrier side of the liquid crystal display device needs to be thinned to a thickness of about 100 μm, for example.

Japanese Patent No. 2857429

  By the way, when the counter substrate is thinned by a chemical method or a mechanical method, the thickness of the counter substrate may vary. In particular, when a large-sized substrate is thinned in a form in which a plurality of liquid crystal cells (liquid crystal cell groups) are formed in a large-sized substrate, the thickness of the large-sized substrate further varies, and each liquid crystal There has been a problem that the distance (distance) between the counter substrate and the parallax barrier varies between cells.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A method for manufacturing a liquid crystal display device according to this application example is a method for manufacturing a liquid crystal display device including a liquid crystal cell and a parallax dividing unit bonded to the liquid crystal cell, the method being applied to a first substrate. A liquid crystal cell group forming step of forming a liquid crystal cell group composed of a plurality of liquid crystal cells by disposing a second substrate facing each other and providing a liquid crystal layer between the first substrate and the second substrate; In the form of the liquid crystal cell group, a thinning process for reducing the thickness of the first substrate, a plate thickness measuring step for measuring the reduced thickness of the first substrate, and the measured first substrate An interval correcting step for correcting an interval between the first substrate and the parallax dividing unit for each of the liquid crystal cells, an adhesion step for bonding the first substrate and the parallax dividing unit, and Dividing the liquid crystal cell group into a plurality of the liquid crystal cells, And butterflies.

  According to this structure, the thickness of the 1st board | substrate of the liquid crystal cell group by which thickness was reduced is measured. Then, based on the measured thickness of the first substrate, the interval between the first substrate and the parallax dividing unit is corrected for each liquid crystal cell. Thereby, for example, when the thickness of the first substrate is reduced, even if the thickness of the first substrate corresponding to each liquid crystal cell varies, the interval is corrected for each liquid crystal cell. The variation in the distance between the first substrate and the parallax dividing unit can be reduced.

  Application Example 2 In the interval correction step of the manufacturing method of the liquid crystal display device according to the application example, the first substrate and the parallax division are performed for each liquid crystal cell based on the measured thickness of the first substrate. And an adhesive amount adjusting step for adjusting the amount of the adhesive that bonds the part.

  According to this structure, the space | interval of a 1st board | substrate and a parallax division part is adjusted according to the quantity of an adhesive agent. For example, when the thickness of the first substrate is reduced, for a liquid crystal cell having a relatively thin first substrate, by increasing the amount of adhesive, the first substrate and the parallax dividing unit The interval can be adjusted to be wide (the distance is long). On the other hand, for the liquid crystal cell having a relatively thick first substrate, the distance between the first substrate and the parallax dividing unit is adjusted to be narrow (the distance is short) by reducing the amount of the adhesive. can do. In this way, it is possible to easily reduce the variation in the distance (distance) between the first substrate and the parallax dividing unit between the liquid crystal cells.

  Application Example 3 The adhesive layer thickness adjusting step of the method for manufacturing a liquid crystal display device according to the application example includes a spacer arrangement step of arranging a spacer between the first substrate and the parallax dividing unit. And

  According to this configuration, the distance between the first substrate and the parallax dividing unit is regulated by the spacer. Therefore, it is possible to ensure the distance between the first substrate and the parallax dividing unit between the liquid crystal cells.

  Application Example 4 In the spacer placement step of the liquid crystal display device manufacturing method according to the application example, a liquid material containing the spacer material is applied to the first substrate based on the measured thickness of the first substrate. And a solidifying step in which the applied liquid material is solidified to form the spacer.

  According to this configuration, a spacer having a necessary thickness can be easily formed at a necessary location on the first substrate corresponding to each liquid crystal cell.

  Application Example 5 In the spacer arrangement step of the method for manufacturing a liquid crystal display device according to the application example, the spacers having a uniform height are arranged for each liquid crystal cell.

  According to this configuration, since the spacers having the same height are arranged for each liquid crystal cell based on the first substrate, it is possible to reduce the variation in the interval between the first substrate and the parallax dividing unit between the liquid crystal cells. it can.

  Application Example 6 In the spacer arrangement step of the method for manufacturing a liquid crystal display device according to the application example, the spacer is formed from the surface of the first substrate in contact with the liquid crystal layer based on the measured thickness of the first substrate. The spacer having a uniform distance to the top of is arranged.

  According to this configuration, the spacer having a uniform interval (distance) from the surface of the first substrate in contact with the liquid crystal layer to the top of the spacer is arranged according to the thickness of the first substrate. That is, spacers having different heights (thicknesses) are arranged for each liquid crystal cell according to the thickness of the first substrate. Therefore, when the parallax dividing unit is bonded, the distance from the surface of the first substrate in contact with the liquid crystal layer to the parallax dividing unit is made uniform in the liquid crystal cell group. Accordingly, it is possible to reduce the variation in the distance (distance) between the first substrate and the parallax dividing unit between the liquid crystal cells, and to reduce the variation in the distance between the liquid crystal layer and the parallax dividing unit.

  Application Example 7 In the spacer arrangement step of the method for manufacturing a liquid crystal display device according to the application example, the spacer is arranged at a position corresponding to the formation region of the parallax dividing unit in plan view. .

  According to this configuration, the visibility is ensured because the spacer is hidden (overlapped) in the formation region of the parallax dividing portion in plan view.

  Application Example 8 A liquid crystal display device according to this application example is manufactured using the method for manufacturing a liquid crystal display device.

  According to this configuration, a high-quality liquid crystal display device can be provided.

  Application Example 9 An electronic apparatus according to this application example includes the above-described liquid crystal display device.

  According to this configuration, a high-quality electronic device can be provided. Examples of the electronic device in this case include a display device for a car navigation system, and various electronic devices such as a mobile computer, a mobile phone, a digital camera, a digital video camera, an in-vehicle device, and an audio device.

1 is a partial cross-sectional view illustrating a configuration of a liquid crystal display device according to a first embodiment. The top view which shows the structure of the liquid crystal display device in 1st Embodiment. The top view which shows the structure of the liquid crystal display device in 1st Embodiment. The schematic diagram which shows the visual recognition display of a liquid crystal display device. 3 is a flowchart showing a method for manufacturing the liquid crystal display device according to the first embodiment. Process drawing which shows the manufacturing method of the liquid crystal display device in 1st Embodiment. The partial cross section figure which shows the structure of the liquid crystal display device in 2nd Embodiment. The top view which shows the structure of the liquid crystal display device in 2nd Embodiment. 9 is a flowchart showing a method for manufacturing a liquid crystal display device according to a second embodiment. Process drawing which shows the manufacturing method of the liquid crystal display device in 2nd Embodiment. The perspective view which shows the structure of a droplet discharge apparatus. The schematic diagram which shows the discharge principle of the liquid material by a piezo system. The partial cross section figure which shows the structure of the liquid crystal display device in 3rd Embodiment. Process drawing which shows the manufacturing method of the liquid crystal display device in 3rd Embodiment. The perspective view which shows the structure of the display apparatus for car navigation systems as an electronic device.

  Hereinafter, first to third embodiments of the present invention will be described with reference to the drawings. In addition, each member in each drawing is illustrated with a different reduction for each member in order to make the size recognizable on each drawing.

[First Embodiment]
(Configuration of liquid crystal display device)
First, the configuration of the liquid crystal display device according to the present embodiment will be described. FIG. 1 is a partial cross-sectional view showing the configuration of the liquid crystal display device according to the first embodiment. 2 and 3 are plan views showing the configuration of the liquid crystal display device. As shown in FIG. 1, the liquid crystal display device 1 </ b> A includes a liquid crystal cell 2, a parallax dividing unit 30, and an adhesive layer 35 provided between the liquid crystal cell 2 and the parallax dividing unit 30.

  The liquid crystal cell 2 includes a counter substrate 10, an element substrate 20 bonded to the counter substrate 10 through a frame-shaped sealing material 45, and a liquid crystal layer provided between the counter substrate 10 and the element substrate 20. 40.

  The counter substrate 10 has a glass substrate 11, a color filter layer 12 provided on the surface of the glass substrate 11 on the liquid crystal layer 40 side, and a translucency provided on the surface of the color filter layer 12 on the liquid crystal layer 40 side. A common electrode layer 13 made of ITO or the like and an alignment film 14 made of polyimide or the like provided on the surface of the common electrode layer 13 on the liquid crystal layer 40 side are provided.

  As shown in FIG. 2A, the color filter layer 12 includes a light shielding portion 14 made of a black-colored resin having a light shielding property, and a color filter portion formed in a region partitioned by the light shielding layer 14. ing. The color filter part is composed of, for example, a red color filter part 12r, a green color filter part 12g, and a blue color filter part 12b. The color filter unit 12 is a layer that absorbs light having a specific wavelength among incident light, and transmits light transmitted by the color filter unit 12 to a predetermined color (for example, red, green, or blue in the above example). can do. An overcoat made of a light-transmitting resin may be laminated on each color filter portion 12r, 12g, 12b and the light shielding portion 14, and the common electrode layer 13 may be formed thereon.

  The element substrate 20 is a circuit element including a glass substrate 21, a TFT (Thin Film Transistor) element provided on the liquid crystal layer 40 side of the glass substrate 21, a gate line connected to the TFT element, a data line, a pixel electrode, and the like. The layer 22 and the alignment film 23 made of polyimide or the like provided on the surface of the circuit element layer 22 on the liquid crystal layer 40 side are provided. A polarizing plate 46b is disposed on the surface of the glass substrate 21 opposite to the liquid crystal layer 40 side. In addition, you may arrange | position a phase difference plate etc. suitably between the glass substrate 21 and the polarizing plate 46b. An illumination unit (not shown) such as a backlight that irradiates light toward the liquid crystal display device 1A is disposed at a position facing the polarizing plate 46b.

  The parallax dividing unit 30 includes a glass substrate 31 and a plurality of parallax barriers 32 having a light shielding property provided on the surface of the glass substrate 31 on the liquid crystal cell 2 side. An opening 33 is provided between the adjacent parallax barriers 32. A polarizing plate 46a is disposed on the surface of the glass substrate 31 opposite to the liquid crystal layer 40 side. Note that a retardation plate or the like may be appropriately disposed between the parallax dividing unit 30 and the polarizing plate 46a.

  The liquid crystal layer 40 can be in a TN mode, for example. When a driving voltage is applied between the common electrode layer 13 and the pixel electrode, an electric field is generated in the liquid crystal layer 40. The liquid crystal molecules in the liquid crystal layer 40 are driven for each pixel according to this electric field, and the alignment state changes. The liquid crystal display device 1A performs display using the polarization conversion function according to the alignment state of the liquid crystal molecules and the polarization selection function of the polarizing plates 46a and 46b.

  FIG. 2A is a plan view in which a part of the liquid crystal cell 2 is enlarged, and FIG. 2B is a plan view in which a part of the parallax dividing unit 30 is enlarged. FIG. 2 shows a state before the liquid crystal cell 2 and the parallax dividing unit 30 are bonded together. A liquid crystal display device 1A shown in FIG. 3 (FIG. 1) is obtained by superimposing these layers. A shaded portion in FIG. 2B represents a region where the parallax barrier 32 formed in the parallax dividing portion 30 is present.

  As shown in FIG. 2A, the liquid crystal cell 2 includes rectangular pixels 4r, 4g, 4b (hereinafter collectively referred to as “pixels”) arranged in a matrix corresponding to the color filter portions 12r, 12g, 12b. 4 "), which display red, green and blue, respectively. The pixels 4r, 4g, and 4b are repeatedly arranged in this order in the X-axis direction in the drawing, and in the Y-axis direction, the pixels 4 corresponding to the same color are arranged in a line in a stripe pattern. . Hereinafter, the column of the pixels 4 in the X-axis direction is referred to as a pixel column 5.

  Each pixel 4 contributes to the display of either the first image or the second image. The pixel 4 that displays the first image is also referred to as a pixel 4L, and the pixel 4 that displays the second image is also referred to as a pixel 4R. In the present embodiment, the pixels 4L and 4R are alternately and repeatedly arranged in the direction of the pixel column 5, that is, the X-axis direction, and are arranged so as to be arranged in a stripe pattern in the Y-axis direction.

  The parallax barrier 32 formed in the parallax dividing unit 30 is substantially the same as the light shielding layer 14 between the pixel 4L and the pixel 4R when viewed from the normal line direction of the liquid crystal cell 2, as shown in FIG. An opening 33 is provided in the overlapping region. Here, “between the pixel 4L and the pixel 4R” means a portion where the pixel 4L and the pixel 4R are adjacent in this order along the direction from the right to the left in the drawing (that is, the negative direction of the X axis). A portion where the pixels 4R and 4L are adjacent in this order along the direction is excluded. Therefore, the opening 33 is provided in a portion corresponding to every other light-shielding portion 14 in the X-axis direction. Further, the width of the opening 33 is formed to be slightly wider than the width of the light shielding portion 14.

  By the way, the glass substrate 11 of the liquid crystal cell 2 is thinned to a thickness of about 100 μm by chemical etching or CMP (Chemical Mechanical Polishing). By this process, the distance between the color filter layer 12 from which display light is substantially emitted and the opening 33 of the parallax barrier 32 is adjusted. As a result, the angle of the optical path from the color filter layer 12 to the opening 33 is changed. Adjusted. Thereby, for example, the first image and the second image can be displayed at a suitable angle. Hereinafter, a method for displaying two images will be described.

(2-image display of liquid crystal display device)
FIG. 4 is a schematic diagram illustrating a method for displaying two images of the liquid crystal display device 1A. The drawing is drawn focusing on light passing through the opening 33 disposed between the pixel 4b (pixel 4R) and the pixel 4r (pixel 4L). The behavior of light passing through the other openings 33 is the same as that in this figure. Further, in this drawing, the glass substrate 11 is drawn thick for convenience of description of the optical path, and the components included in the element substrate 20 are not shown.

  The display light from the pixel 4r passes through the opening 33 and is refracted when entering the air layer, and then is visually recognized in an angular range denoted by reference numeral 9r. Similarly, the display light from the pixel 4g and the pixel 4b is visually recognized in an angle range denoted by reference numerals 9g and 9b, respectively. The angle range 9r and angle range 9b, the angle range 9r and angle range 9g, and the angle range 9b and angle range 9g partially overlap.

  As a result, in the angle range VL distributed from the front to the left, the display light from the pixel 4b is shielded by the parallax barrier 32 and is not visually recognized, but only the display light from the pixel 4r is visually recognized. On the other hand, in the angle range VR distributed from the front to the right, the display light from the pixel 4r is shielded by the parallax barrier 32 and is not visually recognized, but only the display light from the pixel 4b is visually recognized. In other words, only the first image by the pixel 4L is visually recognized in the angle range VL, and only the second image by the pixel 4R is visually recognized in the angle range VR. As described above, the liquid crystal display device 1A can display two different images in the angle ranges VL and VR by shielding the different pixels 4 according to the viewing angle by the parallax barrier 32. That is, the parallax barrier 32 can spatially separate the display of the first image and the second image from the pixel 4L and the pixel 4R.

  The angle ranges VL and VR can be adjusted depending on the thickness of the glass substrate 11, and also depend on the arrangement pitch of the pixels 4 in the X-axis direction, the width of the opening 33, the width of the light shielding layer 14, and the like. . In the present embodiment, the thickness of the glass substrate 11 is about 100 μm, and the arrangement pitch of the pixels 4 in the X-axis direction is about 70 μm. According to such a configuration, for example, a range of 15 degrees or more and 50 degrees or less from the normal direction of the glass substrate 11 can be set. In particular, the first image or the second image can be suitably observed at an angle of 30 degrees from the normal direction of the glass substrate 11.

  Note that, in the front angle range VC sandwiched between the angle ranges VL and VR, both the display light from the pixels 4b and 4r are visually recognized. That is, the angle range VC is a mixed area where both the first image and the second image are displayed. This is because the width of the opening 33 in the X-axis direction is formed to be wider than the width of the light shielding layer 14 in the X-axis direction.

  Thus, the liquid crystal display device 1A is a so-called two-screen display capable of simultaneously displaying two different images in different directions. For this purpose, the glass substrate 11 is thinned and thinned to, for example, about 50 to 100 μm. It is necessary to do.

  By the way, when the glass substrate 11 is thinned, the thickness of the glass substrate 11 may vary. In particular, when a large glass substrate including the glass substrate 11 is thinned in a form in which a plurality of liquid crystal cells 2 are formed in a large glass substrate, the thickness of the large glass substrate tends to vary further. It is in. If it does so, the thickness of the glass substrate 11 will differ between liquid crystal cells 2, and the space | interval of the glass substrate 11 and the parallax barrier 32 is not equalized. Therefore, a method for manufacturing a liquid crystal display device when the glass substrate is thinned and the thickness of the glass substrate varies will be described below.

(Manufacturing method of liquid crystal display device)
A method for manufacturing the liquid crystal display device according to the present embodiment will be described. FIG. 5 is a flowchart illustrating a method for manufacturing the liquid crystal display device according to the present embodiment, and FIG. 6 is a process diagram illustrating the method for manufacturing the liquid crystal display device according to the present embodiment. In the present embodiment, for ease of explanation, a case where two liquid crystal cells 2a and 2b are formed in a large glass substrate will be described as an example.

  The manufacturing method of the liquid crystal display device 1A (1Aa, 1Ab) according to the present embodiment is a second substrate including the glass substrate 21 (21a, 21b) facing the first substrate 11A including the glass substrate 11 (11a, 11b). 21A is disposed, and a liquid crystal cell group 2A composed of a plurality of liquid crystal cells 2 (2a, 2b) is formed by disposing the liquid crystal layer 40 (40a, 40b) between the first substrate 11A and the second substrate 21A. In the form of the liquid crystal cell group forming step S10 and the liquid crystal cell group 2A, the thinning process step S11 for reducing the thickness of the first substrate 11A, and the thickness measurement for measuring the reduced thickness of the first substrate 11A Based on step S12, and the measured thickness of the first substrate 11A, for each liquid crystal cell 2, the interval correction step S30 for correcting the interval between the first substrate 11A and the parallax dividing unit 30, and the first substrate 11A and the parallax Dividing unit 30 A bonding step S31 to wear, is intended to include the division step S13 described dividing the liquid crystal cell group 2A into a plurality of liquid crystal cells 2, a.

  As shown in FIG. 5, each step S <b> 10 to S <b> 13 is a step of forming a plurality of liquid crystal cells 2, and step S <b> 20 is a step of forming the parallax dividing unit 30. Steps S30 and S31 are steps for bonding the liquid crystal cell 2 and the parallax dividing unit 30 to complete the liquid crystal display device 1A (1Ab, 1Ab). Here, steps S10 to S13 and step S20 are performed independently.

  First, in the liquid crystal cell group forming step S10, as shown in FIG. 6A, the second substrate 21A including the glass substrates 21a and 21b is disposed opposite to the first substrate 11A including the glass substrates 11a and 11b. A liquid crystal cell group 2A composed of a plurality of liquid crystal cells 2a and 2b is formed by disposing liquid crystal layers 40a and 40b between the first substrate 11A and the second substrate 21A.

  On the first substrate 11A in the liquid crystal cell group forming step S10, the color filter layer 12, the common electrode layer 13, and the alignment film 14 are formed in advance on the glass substrates 11a and 11b corresponding to the liquid crystal cells 2a and 2b, respectively. . For example, the member can be formed using various film forming techniques such as atmospheric pressure or reduced pressure CVD, spin coating, and photolithography. In FIG. 6, the color filter layer 12, the common electrode layer 13, and the alignment film 14 are omitted.

  Further, on the second substrate 21A in the liquid crystal cell group forming step S10, the circuit element layer 22 and the alignment film 23 are formed in advance on the glass substrates 21a and 21b corresponding to the respective liquid crystal cells 2a and 2b. For example, the member can be formed using various film forming techniques such as atmospheric pressure or reduced pressure CVD, spin coating, and photolithography. In FIG. 6, the circuit element layer 22 and the alignment film 23 are omitted.

  Then, the first substrate 11 </ b> A and the second substrate 21 </ b> A corresponding to the liquid crystal cells 2 a and 2 b are bonded together via a frame-shaped sealing material 45. More specifically, first, a screen printing method or a dispenser coating method is applied to a predetermined portion of the first substrate 11A or the second substrate 21A corresponding to the liquid crystal cells 2a and 2b of at least one of the first substrate 11A or the second substrate 21A. Apply a frame-shaped sealing material, etc. Subsequently, the first substrate 11A and the second substrate 21A are aligned and pressure bonded. Thereafter, the sealing material 45 is dried to bond the first substrate 11A and the second substrate 21A together. The sealing material 45 is provided with an inlet for injecting a liquid crystal material that will later become the liquid crystal layer 40.

  Next, a liquid crystal material is injected into the space surrounded by the sealing material 45 and sealed with a sealant. The liquid crystal material is injected by dropping the liquid crystal material into the injection port under vacuum and introducing the liquid crystal material into the space by capillary action. Further, the sealing is performed by applying an ultraviolet curable resin to the injection port, and then irradiating the ultraviolet curable resin with ultraviolet rays to be cured. Thus, a liquid crystal cell group 2A composed of a plurality of liquid crystal cells 2a and 2b is formed. In the present embodiment, the vacuum injection method is shown as a method for forming the liquid crystal cell. However, the method is not limited to this, and for example, a vacuum bonding method may be used.

  In the thin plate processing step S11, as shown in FIG. 6B, the first substrate 11A is thinned to reduce the thickness of the first substrate 11A. For example, the first substrate 11A is thinned to a thickness of about 100 μm by chemical etching or CMP. At this time, the thickness of the first substrate 11A may vary. That is, the thickness of the first substrate 11A corresponding to each liquid crystal cell 2a, 2b may be different. Hereinafter, a case where the thickness of the first substrate 11A is different between the liquid crystal cells 2a and 2b will be described. In the present embodiment, as shown in FIG. 6B, the first substrate 11A corresponding to the liquid crystal cell 2b is directed from the one end of the first substrate 11A toward the one end of the first substrate 11A corresponding to the liquid crystal cell 2a. A case where the thickness of the substrate 11A is gradually reduced to be thinned will be described.

  In the plate thickness measuring step S12, the thickness of the first substrate 11A subjected to the thinning process is measured. As a measuring method, in addition to non-contact measurement using laser light, ultrasonic waves, etc., contact measurement using a dial gauge or the like can be performed.

  In the dividing step S13, the liquid crystal cell group 2A is divided into a plurality of liquid crystal cells 2a and 2b. As a result, as shown in FIG. 6C, single liquid crystal cells 2a and 2b are formed. As a dividing method, for example, scribe grooves are formed on the surfaces of the first substrate 11A and the second substrate 21A corresponding to the liquid crystal cells 2a and 2b. And it can cut | disconnect according to a scribe groove | channel by applying external force to both board | substrates 11A and 21A. In addition, as another division | segmentation method, you may cut | disconnect both board | substrates 11A and 21A using a dicer or a laser beam, for example.

  In the parallax dividing unit forming step S20, the parallax barrier 32 is formed on the surface of the glass substrate 31 to form the parallax dividing unit. Specifically, for example, a light shielding resin can be applied onto the glass substrate 31 by a spin coating method to form a resin layer, and the resin layer can be patterned by a photolithography method. In addition, it is preferable that the glass substrate 31 has a thickness that is not easily damaged and easy to handle. Specifically, it preferably has a thickness of 0.4 mm or more. In the present embodiment, the example in which the parallax barrier 32 is formed of a resin layer has been described. However, the present invention is not limited to this, and may be formed of a metal film, for example.

  Next, in the interval correction step S30, the interval between the first substrate 11A and the parallax dividing unit 30 is corrected for each of the liquid crystal cells 2a and 2b based on the measured thickness of the first substrate 11A. In the present embodiment, an adhesive amount adjustment step of adjusting the amount of adhesive that bonds the first substrate 11A and the parallax dividing unit 30 is included for each of the liquid crystal cells 2a and 2b. Specifically, an adhesive agent is provided for each of the liquid crystal cells 2a and 2b so that the distance between the glass substrates 11a and 11b and the parallax barrier 32 of the parallax dividing unit 30 is uniform between the plurality of liquid crystal cells 2a and 2b. Adjust the amount. In the example of this embodiment, since the glass substrate 11a of the liquid crystal cell 2a is relatively thinner than the glass substrate 11b of the liquid crystal cell 2b, the amount of adhesive applied to the glass substrate 11a of the liquid crystal cell 2a is More than the amount of adhesive applied to the glass substrate 11b of the liquid crystal cell 2b.

  In the bonding step S31, the liquid crystal cells 2a and 2b and the parallax dividing unit 30 are bonded. Specifically, as shown in FIG. 6D, the liquid crystal cells 2a and 2b and the parallax dividing unit 30 are bonded via an adhesive applied to the liquid crystal cells 2a and 2b. Then, the adhesive is solidified by drying or the like.

  Thereafter, as illustrated in FIG. 6D, a polarizing plate 46 a and a polarizing plate 46 b are attached to the outside of the glass substrate 31 and the element substrate 20 of the parallax dividing unit 30, respectively.

  Through the above steps, the liquid crystal display devices 1Aa and 1Ab are completed.

  Therefore, according to the first embodiment, the following effects can be obtained.

  (1) When the first substrate 11A is thinned in the state of the liquid crystal cell group 2A, the thickness of the first substrate 11A corresponding to the liquid crystal cells 2a and 2b varies among the plurality of liquid crystal cells 2a and 2b. Even in this case, by adjusting the amount of the adhesive for each of the liquid crystal cells 2a and 2b, the distance between the glass substrates 11a and 11b and the parallax barrier 32 can be adjusted, and the glass substrates 11a and 11b between the liquid crystal cells 2a and 2b can be adjusted. The distance between 11b and the parallax barrier 32 can be made uniform.

  (2) Quality variation between the liquid crystal cells 2a and 2b is reduced, and the liquid crystal display device 1A can be manufactured with a high yield. Thereby, the amount of waste generated due to defects or the like can be reduced.

[Second Embodiment]
Next, a second embodiment will be described. In the drawings, members similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

(Configuration of liquid crystal display device)
First, the configuration of the liquid crystal display device according to the present embodiment will be described. FIG. 7 is a cross-sectional view showing the configuration of the liquid crystal display device according to the second embodiment. FIG. 8 is a plan view showing the configuration of the liquid crystal display device. As shown in FIG. 7, the liquid crystal display device 1 </ b> B includes a liquid crystal cell 2, a parallax dividing unit 30, and an adhesive layer 35 provided between the liquid crystal cell 2 and the parallax dividing unit 30. Further, a spacer 50 is disposed between the liquid crystal cell 2 and the parallax dividing unit 30.

  The liquid crystal cell 2 includes a counter substrate 10, an element substrate 20 bonded to the counter substrate 10 through a frame-shaped sealing material 45, and a liquid crystal layer provided between the counter substrate 10 and the element substrate 20. 40.

  The counter substrate 10 has a glass substrate 11, a color filter layer 12 provided on the surface of the glass substrate 11 on the liquid crystal layer 40 side, and a translucency provided on the surface of the color filter layer 12 on the liquid crystal layer 40 side. A common electrode layer 13 made of ITO or the like and an alignment film 14 made of polyimide or the like provided on the surface of the common electrode layer 13 on the liquid crystal layer 40 side are provided.

  The configuration and the like of the color filter layer 12 and the parallax dividing unit 30 are the same as in the first embodiment, and thus the description thereof is omitted (see FIGS. 2 and 3).

  The element substrate 20 is a circuit element including a glass substrate 21, a TFT (Thin Film Transistor) element provided on the liquid crystal layer 40 side of the glass substrate 21, a gate line connected to the TFT element, a data line, a pixel electrode, and the like. The layer 22 and the alignment film 23 made of polyimide or the like provided on the surface of the circuit element layer 22 on the liquid crystal layer 40 side are provided. A polarizing plate 46b is disposed on the surface of the glass substrate 21 opposite to the liquid crystal layer 40 side. In addition, you may arrange | position a phase difference plate etc. suitably between the glass substrate 21 and the polarizing plate 46b. An illumination unit (not shown) such as a backlight that irradiates light toward the liquid crystal display device 1B is disposed at a position facing the polarizing plate 46b. Since the liquid crystal layer 40 is the same as that of the first embodiment, the description thereof is omitted.

  A plurality of spacers 50 are arranged between the liquid crystal cell 2 and the parallax dividing unit 30. Thereby, the space | interval between the liquid crystal cell 2 and the parallax division part 30 is controlled. In the present embodiment, the spacer 50 is disposed between the glass substrate 11 and the parallax barrier 32. The spacer 50 has a substantially hemispherical shape in a cross-sectional view and has a uniform height in the liquid crystal cell 2. The spacer 50 is formed of, for example, a thermosetting resin or a photocurable resin.

  As shown in FIG. 8, the spacer 50 is disposed at a position corresponding to the formation region of the parallax barrier 32 in a plan view. That is, the spacer 50 is disposed at a position hidden (overlapped) by the parallax barrier 32 in plan view. Thereby, the fall of the visibility of an image can be prevented. As a specific planar shape or arrangement state of the spacer 50, for example, as shown in FIG. 8A, the spacer 50 has a dot shape and is arranged at substantially equal intervals. As another example, for example, as shown in FIG. 8 (b), it has a line shape and is arranged at substantially equal intervals.

  Note that the two-image display method of the liquid crystal display device 1B of the present embodiment is the same as that of the first embodiment, and thus the description thereof is omitted.

(Manufacturing method of liquid crystal display device)
Next, a method for manufacturing the liquid crystal display device according to the present embodiment will be described. FIG. 9 is a flowchart showing a method for manufacturing a liquid crystal display device according to this embodiment, and FIG. 10 is a process chart showing a method for manufacturing a liquid crystal display device according to this embodiment.

  As shown in FIG. 9, the method of manufacturing the liquid crystal display device 1B according to the present embodiment includes a glass substrate 21 (21a, 21b) that faces the first substrate 11A including the glass substrate 11 (11a, 11b). A liquid crystal cell group 2B comprising a plurality of liquid crystal cells 2 (2a, 2b) in which two substrates 21A are arranged, and a liquid crystal layer 40 (40a, 40b) is arranged between the first substrate 11A and the second substrate 21A. A liquid crystal cell group forming step S40 for forming the thin film, a thinning process step S41 for reducing the thickness of the first substrate 11A in the form of the liquid crystal cell group 2B, and a plate for measuring the reduced thickness of the first substrate 11A Based on the thickness measurement step S42 and the measured thickness of the first substrate 11A, for each liquid crystal cell 2, the interval correction step S43 for correcting the interval between the first substrate 11A and the parallax dividing unit 30, and the first substrate 11A And the parallax dividing unit 30 A bonding step S60 to wear, is intended to include the division step S61 of dividing the liquid crystal cell groups 2B to a plurality of liquid crystal cells 2, a. Further, the interval correction step S43 of the present embodiment includes a spacer arrangement step of arranging the spacer 50 between the first substrate 11A and the parallax dividing unit 30, and the spacer arrangement step includes the measurement of the first substrate 11A measured. Based on the thickness, there is an application step of applying a liquid material containing the material of the spacer 50 on the first substrate 11A, and a solidification step of solidifying the applied liquid material to form the spacer 50. .

  As shown in FIG. 9, each step S <b> 40 to S <b> 43 is mainly a step of forming a plurality of liquid crystal cells 2, and step S <b> 50 is a step of forming the parallax dividing unit 30. Step S60 is a step for bonding the liquid crystal cell 2 and the parallax dividing unit 30 to complete the liquid crystal display device 1B (1Bb, 1Bb). Here, steps S40 to S43 and step S50 are performed independently. In the spacer arrangement process of the present embodiment, a liquid droplet ejection apparatus that ejects a liquid material including the material of the spacer 50 as droplets and applies the liquid material onto the first substrate 11A is used. Therefore, prior to the description of the manufacturing method of the liquid crystal display device 1B, first, the droplet discharge device will be described.

  FIG. 11 is a perspective view showing the configuration of the droplet discharge device. The droplet discharge device IJ includes a droplet discharge head 1001, an X-axis direction drive shaft 1004, a Y-axis direction guide shaft 1005, a control device CONT, a stage 1007, a cleaning mechanism 1008, a base 1009, and a heater. 1015 and the like.

  The stage 1007 supports the workpiece W to which the liquid material is applied, and includes a fixing mechanism (not shown) that fixes the workpiece W to a reference position.

  The droplet discharge head 1001 is a multi-nozzle type droplet discharge head including a plurality of discharge nozzles, and the longitudinal direction and the X-axis direction are made to coincide. The plurality of discharge nozzles are provided on the lower surface of the droplet discharge head 1001 at regular intervals. From the discharge nozzle of the droplet discharge head 1001, the liquid material is discharged as droplets onto the work W supported by the stage 1007, and the liquid material is applied onto the work W.

  An X-axis direction drive motor 1002 is connected to the X-axis direction drive shaft 1004. The X-axis direction drive motor 1002 is a stepping motor or the like, and rotates the X-axis direction drive shaft 1004 when a drive signal in the X-axis direction is supplied from the control device CONT. When the X-axis direction drive shaft 1004 rotates, the droplet discharge head 1001 moves in the X-axis direction.

  The Y-axis direction guide shaft 1005 is fixed so as not to move with respect to the base 1009. The stage 1007 includes a Y-axis direction drive motor 1003. The Y-axis direction drive motor 1003 is a stepping motor or the like, and moves the stage 1007 in the Y-axis direction when a drive signal in the Y-axis direction is supplied from the control device CONT.

  The control device CONT supplies a droplet discharge control voltage to the droplet discharge head 1001. In addition, a driving pulse signal for controlling movement of the droplet discharge head 1001 in the X-axis direction is supplied to the X-axis direction driving motor 1002, and a driving pulse signal for controlling movement of the stage 1007 in the Y-axis direction is supplied to the Y-axis direction driving motor 1003. Supply.

  The cleaning mechanism 1008 is for cleaning the droplet discharge head 1001. The cleaning mechanism 1008 includes a Y-axis direction drive motor (not shown). The cleaning mechanism moves along the Y-axis direction guide shaft 1005 by driving the Y-axis direction drive motor. The movement of the cleaning mechanism 1008 is also controlled by the control device CONT.

  Here, the heater 1015 is means for heat-treating the workpiece W by lamp annealing, and performs evaporation and drying of the solvent contained in the liquid material disposed on the workpiece W. The heater 1015 is also turned on and off by the control device CONT.

  The droplet discharge device IJ is arranged in the X-axis direction on the lower surface of the droplet discharge head 1001 with respect to the workpiece W while relatively scanning the droplet discharge head 1001 and the stage 1007 that supports the workpiece W. Droplets are ejected from a plurality of ejection nozzles.

  FIG. 12 is a schematic diagram showing the discharge principle of the liquid material by the piezo method. In FIG. 12, a piezo element 1022 is installed adjacent to a liquid chamber 1021 that stores a liquid material. The liquid material is supplied to the liquid chamber 1021 via a liquid material supply system 1023 including a material tank that stores the liquid material. The piezo element 1022 is connected to a drive circuit 1024, and a voltage is applied to the piezo element 1022 via the drive circuit 1024 to deform the piezo element 1022, whereby the liquid chamber 1021 is deformed and liquid is discharged from the discharge nozzle 1025. Material is dispensed. In this case, the amount of distortion of the piezo element 1022 is controlled by changing the value of the applied voltage. Further, the strain rate of the piezo element 1022 is controlled by changing the frequency of the applied voltage. Since the droplet discharge by the piezo method does not apply heat to the material, it has an advantage of hardly affecting the composition of the material.

  Here, the description returns to the method of manufacturing the liquid crystal display device 1B. In the present embodiment, a case where two liquid crystal cells 2a and 2b are formed will be described as an example for easy explanation. First, in the liquid crystal cell group forming step S40, as shown in FIG. 10A, the second substrate 21A including the glass substrates 21a and 21b is disposed opposite to the first substrate 11A including the glass substrates 11a and 11b. A liquid crystal cell group 2A composed of a plurality of liquid crystal cells 2a and 2b is formed by disposing liquid crystal layers 40a and 40b between the first substrate 11A and the second substrate 21A. In addition, since the specific method of liquid crystal cell group formation process S40 is the same as that of 1st Embodiment, description is abbreviate | omitted.

  In the thinning process step S41, as shown in FIG. 10B, the first substrate 11A is thinned to reduce the thickness of the first substrate 11A. For example, the first substrate 11A is thinned to a thickness of about 100 μm by chemical etching or CMP. At this time, the thickness of the first substrate 11A may vary. That is, the thickness of the first substrate 11A corresponding to each liquid crystal cell 2a, 2b may be different. Hereinafter, a case where the thickness of the first substrate 11A is different between the liquid crystal cells 2a and 2b will be described. In the present embodiment, as in the first embodiment, the first substrate 11A is directed from the end of the first substrate 11A corresponding to the liquid crystal cell 2b toward the end of the first substrate 11A corresponding to the liquid crystal cell 2a. A case will be described in which the thickness of the sheet is gradually reduced and thinned.

  In the plate thickness measurement step S42, the thickness of the thinned first substrate 11A is measured. As a measuring method, in addition to non-contact measurement using laser light, ultrasonic waves, etc., contact measurement using a dial gauge or the like can be performed.

  Next, in the interval correction step S43, the interval between the first substrate 11A and the parallax dividing unit 30 is corrected for each of the liquid crystal cells 2a and 2b based on the measured thickness of the first substrate 11A. In the present embodiment, the spacer 50 is disposed between the first substrate 11 </ b> A and the parallax dividing unit 30. Specifically, the spacer 50 is formed using the droplet discharge device IJ. Below, the application | coating process and solidification process concerning the formation method of the spacer 50 are demonstrated.

  First, in the coating step, as shown in FIG. 10C, a liquid material including the material of the spacer 50 is dropped into the droplet D based on the measured thickness of the first substrate 11A using the droplet discharge device IJ. The liquid materials 50a ′ and 50b ′ are applied onto the first substrate 11A. At this time, the liquid materials 50a ′, The application amount of 50b ′ is adjusted (the discharge amount is adjusted). In the example of the present embodiment, the first substrate 11A corresponding to the liquid crystal cell 2a is relatively thinner than the first substrate 11A corresponding to the liquid crystal cell 2b, and thus the first substrate corresponding to the liquid crystal cell 2a. The amount of the liquid material 50a ′ applied to 11A is set larger than the amount of the liquid material 50b ′ applied to the first substrate 11A corresponding to the liquid crystal cell 2b. In other words, the height of the liquid material 50a 'is set higher than the height of the liquid material 50b'. Further, in consideration of the bonding position between the liquid crystal cells 2a and 2b and the parallax barrier 32, the liquid materials 50a ′ and 50b ′ are applied to the positions on the first substrate 11A corresponding to the formation area of the parallax barrier 32 in plan view. To do.

  Next, in the solidifying step, the applied liquid materials 50a 'and 50b' are solidified. By solidifying, the spacers 50a and 50b are formed. Here, as shown in FIG. 10 (d), the spacers 50a and 50b have a uniform height in the respective liquid crystal cells 2a and 2b, but the liquid materials 50a ′ and 50b according to the thickness of the first substrate 11A. Since 'is applied, the heights of the liquid crystal cells 2a and 2b are different. In the present embodiment, the spacer 50a corresponding to the liquid crystal cell 2a is formed higher than the spacer 50b corresponding to the liquid crystal cell 2b.

  On the other hand, in the parallax dividing unit forming step S50, the parallax dividing unit 30 is formed by forming the parallax barrier 32 on the surface of the glass substrate 31, as in the first embodiment.

  In the bonding step S60, the liquid crystal cells 2a and 2b and the parallax dividing unit 30 are bonded. Specifically, as shown in FIG. 10E, the liquid crystal cells 2a and 2b and the parallax dividing unit 30 are bonded via an adhesive. At this time, the distance between the first substrate 11A and the parallax dividing unit 30 is regulated by the spacers 50a and 50b.

  In the dividing step S61, the liquid crystal cell group 2B is divided into a plurality of liquid crystal cells 2a and 2b. Since the division method is the same as that of the first embodiment, the description thereof is omitted. Thereafter, as shown in FIG. 10F, a polarizing plate 46a and a polarizing plate 46b are attached to the outside of the glass substrate 31 and the element substrate 20 of the parallax dividing unit 30, respectively.

  Through the above steps, the liquid crystal display devices 1Ba and 1Bb are completed.

  Therefore, according to the second embodiment, in addition to the effects of the first embodiment, there are the following effects.

  (1) When the first substrate 11A is thinned in the state of the liquid crystal cell group 2B, the thickness of the first substrate 11A corresponding to the liquid crystal cells 2a and 2b varies among the plurality of liquid crystal cells 2a and 2b. Even if it is a case, by providing spacer 50a, 50b which has the height according to the thickness of the 1st board | substrate 11 between 11 A of 1st board | substrates and the parallax barrier 32 for every liquid crystal cell 2a, 2b, glass The distance between the substrates 11a and 11b and the parallax barrier 32 can be adjusted, and the distance between the glass substrates 11a and 11b and the parallax barrier 32 between the liquid crystal cells 2a and 2b can be made uniform.

  (2) Using the droplet discharge device IJ, liquid materials 50a 'and 50b' including the material of the spacers 50a and 50b were applied to the first substrate 11A. Thereby, the spacers 50a and 50b having a necessary thickness can be easily formed at necessary locations.

  (3) The spacer 50 is formed at a position corresponding to the region where the parallax barrier 32 is formed in plan view. Thereby, since the light which permeate | transmitted the color filter layer 12 permeate | transmits the opening part 33 without passing through the spacers 50a and 50b, visibility can be ensured.

[Third Embodiment]
Next, a third embodiment will be described. In the drawing, members similar to those in the first or second embodiment are denoted by the same reference numerals as those in the first or second embodiment.

(Configuration of liquid crystal display device)
First, the configuration of the liquid crystal display device according to the present embodiment will be described. FIG. 13 is a cross-sectional view showing a configuration of the liquid crystal display device according to the present embodiment. As shown in FIG. 13, the liquid crystal display device 1 </ b> C includes a liquid crystal cell 2, a parallax dividing unit 30, and an adhesive layer 35 provided between the liquid crystal cell 2 and the parallax dividing unit 30. Further, a spacer 51 is disposed between the liquid crystal cell 2 and the parallax dividing unit 30.

  The liquid crystal cell 2 includes a counter substrate 10, an element substrate 20 bonded to the counter substrate 10 through a frame-shaped sealing material 45, and a liquid crystal layer provided between the counter substrate 10 and the element substrate 20. 40.

  The counter substrate 10 has a glass substrate 11, a color filter layer 12 provided on the surface of the glass substrate 11 on the liquid crystal layer 40 side, and a translucency provided on the surface of the color filter layer 12 on the liquid crystal layer 40 side. A common electrode layer 13 made of ITO or the like and an alignment film 14 made of polyimide or the like provided on the surface of the common electrode layer 13 on the liquid crystal layer 40 side are provided.

  The configuration and the like of the color filter layer 12 and the parallax dividing unit 30 are the same as in the first embodiment, and thus the description thereof is omitted (see FIGS. 2 and 3).

  The element substrate 20 is a circuit element including a glass substrate 21, a TFT (Thin Film Transistor) element provided on the liquid crystal layer 40 side of the glass substrate 21, a gate line connected to the TFT element, a data line, a pixel electrode, and the like. The layer 22 and the alignment film 23 made of polyimide or the like provided on the surface of the circuit element layer 22 on the liquid crystal layer 40 side are provided. A polarizing plate 46b is disposed on the surface of the glass substrate 21 opposite to the liquid crystal layer 40 side. In addition, you may arrange | position a phase difference plate etc. suitably between the glass substrate 21 and the polarizing plate 46b. An illumination unit (not shown) such as a backlight that irradiates light toward the liquid crystal display device 1C is disposed at a position facing the polarizing plate 46b. Since the liquid crystal layer 40 is the same as that of the first embodiment, the description thereof is omitted.

  A plurality of spacers 51 are arranged between the liquid crystal cell 2 and the parallax dividing unit 30. Thereby, the space | interval between the liquid crystal cell 2 and the parallax division part 30 is controlled. In the present embodiment, the spacer 51 is disposed between the glass substrate 11 and the parallax barrier 32. The spacer 51 has a substantially hemispherical shape in a cross-sectional view, and is formed so that the distance from the surface of the counter substrate 10 in contact with the liquid crystal layer 40 to the top of each spacer 51 is uniform. The arrangement position of the spacer 51 is the same as that in the second embodiment, and the description thereof is omitted (see FIG. 8). Further, the two-image display method of the liquid crystal display device 1C of the present embodiment is the same as that of the first embodiment, and thus the description thereof is omitted.

(Manufacturing method of liquid crystal display device)
Next, a method for manufacturing the liquid crystal display device according to the present embodiment will be described. FIG. 14 is a process chart showing the method for manufacturing the liquid crystal display device according to the present embodiment. The flowchart showing the method for manufacturing the liquid crystal display device according to the present embodiment is the same as that of the second embodiment (see FIG. 9). In the present embodiment, a case where two liquid crystal cells 2a and 2b are formed will be described as an example for easy explanation.

  In the manufacturing method of the liquid crystal display device 1C according to the present embodiment, the second substrate 21A including the glass substrates 21a and 21b is disposed opposite to the first substrate 11A including the glass substrates 11a and 11b, and the first substrate 11A and the first substrate 11A are arranged. In the form of a liquid crystal cell group 2C, a liquid crystal cell group formation step S40 for forming a liquid crystal cell group 2C composed of a plurality of liquid crystal cells 2a and 2b by disposing the liquid crystal layers 40a and 40b between the two substrates 21A. Based on the thinning process step S41 for reducing the thickness of the first substrate 11A, the plate thickness measurement step S42 for measuring the reduced thickness of the first substrate 11A, and the measured thickness of the first substrate 11A, For each liquid crystal cell 2, an interval correction step S43 for correcting the interval between the first substrate 11A and the parallax dividing unit 30, an adhesion step S60 for bonding the first substrate 11A and the parallax dividing unit 30, and the liquid crystal cell group 2A plural A dividing step S61 of dividing the crystal cell 2, is intended to include. Further, the interval correction step S43 of the present embodiment includes a spacer arrangement step of arranging the spacer 51 between the first substrate 11A and the parallax dividing unit 30, and the spacer arrangement step includes the measurement of the first substrate 11A measured. Based on the thickness, there is an application step of applying a liquid material including the material of the spacer 51 on the first substrate 11A, and a solidification step of forming the spacer 51 by solidifying the applied liquid material. .

  First, in the liquid crystal cell group forming step S40, as shown in FIG. 14A, the second substrate 21A including the glass substrates 21a and 21b is disposed opposite to the first substrate 11A including the glass substrates 11a and 11b. Liquid crystal layers 40a and 40b are arranged between the first substrate 11A and the second substrate 21A to form a liquid crystal cell group 2C composed of a plurality of liquid crystal cells 2a and 2b. In addition, since the specific method of liquid crystal cell group formation process S40 is the same as that of 1st Embodiment, description is abbreviate | omitted.

  In the thinning process step S41, as shown in FIG. 14B, the thickness of the first substrate 11A is reduced. For example, the first substrate 11A is thinned to a thickness of about 100 μm by chemical etching or CMP. At this time, the thickness of the first substrate 11A may vary. That is, the thickness of the first substrate 11A corresponding to each liquid crystal cell 2a, 2b may be different. Hereinafter, a case where the thickness of the first substrate 11A is different between the liquid crystal cells 2a and 2b will be described. In the present embodiment, as in the first and second embodiments, the end of the first substrate 11A corresponding to the liquid crystal cell 2b is directed toward the end of the first substrate 11A corresponding to the liquid crystal cell 2a. A case where the thickness of one substrate 11A is gradually reduced and thinned will be described.

  In the plate thickness measurement step S42, the thickness of the thinned first substrate 11A is measured. As the measurement method, various methods such as non-contact measurement using laser light, ultrasonic waves, etc., contact measurement using a dial gauge, and the like can be used.

  Next, in the interval correction step S43, the interval between the first substrate 11A and the parallax dividing unit 30 is corrected for each of the liquid crystal cells 2a and 2b based on the measured thickness of the first substrate 11A. In the present embodiment, the spacer 51 is disposed between the first substrate 11A and the parallax dividing unit 30. Specifically, the spacer 51 is formed using the droplet discharge device IJ. Below, a coating process and a solidification process are demonstrated as a formation method of the spacer 51. FIG.

  First, in the coating process, as shown in FIG. 14C, a liquid material containing the material of the spacer 51 is dropped into the droplet D based on the measured thickness of the first substrate 11A using the droplet discharge device IJ. The liquid material 51 ′ is applied on the first substrate 11A. At this time, the application amount of the liquid material 51 ′ is set according to the application position on the first substrate 11A so that the distance from the surface of the first substrate 11A in contact with the liquid crystal layer 40 to the top of the liquid material 51 ′ is uniform. Adjust (adjust the discharge rate). In the example of the present embodiment, since the thickness of the first substrate 11A gradually decreases from the liquid crystal cell 2b toward the liquid crystal cell 2a, the first substrate 11A moves from the liquid crystal cell 2b toward the liquid crystal cell 2a. The amount of the liquid material 51 ′ to be applied is increased. In other words, the height of the liquid material 51 'is gradually increased according to the thickness of the first substrate 11A. The application direction is not limited to the above direction, and the liquid crystal material 51 'may be applied in the direction from the liquid crystal cell 2a to the liquid crystal cell 2b. Then, in consideration of the bonding position between the liquid crystal cells 2a and 2b and the parallax barrier 32, the liquid material 51 'is applied to the position on the first substrate 11A corresponding to the area where the parallax barrier 32 is formed in plan view.

  Next, in the solidifying step, the applied liquid material 51 'is solidified. As a result of solidification, as shown in FIG. 14D, spacers on the first substrate 11A have a uniform distance from the surface of the first substrate 11A in contact with the liquid crystal layers 40a and 40b to the top of each spacer 51. 51 is formed. That is, the spacers 51 having different heights are formed according to the thickness of the first substrate 11A.

  On the other hand, in the parallax dividing unit forming step S50, the parallax dividing unit 30 is formed by forming the parallax barrier 32 on the surface of the glass substrate 31, as in the first embodiment.

  In the bonding step S60, the first substrate 11A and the parallax dividing unit 30 are bonded. Specifically, as shown in FIG. 14E, the first substrate 11A and the parallax dividing unit 30 are bonded via an adhesive. At this time, the space between the first substrate 11 </ b> A and the parallax barrier 32 is regulated by the spacer 51. The spacer 51 has a uniform distance from the surface of the first substrate 11A in contact with the liquid crystal layer 40 to the top of each spacer 51, and thus the distance from the surface of the first substrate 11A in contact with the liquid crystal layer 40 to the parallax barrier 32. Is made uniform. That is, the surface of the first substrate 11 </ b> A in contact with the liquid crystal layer 40 and the top surface of the parallax barrier 32 of the parallax dividing unit 30 are parallel to each other.

  In the dividing step S61, the liquid crystal cell group 2C is divided into a plurality of liquid crystal cells 2a and 2b. As a dividing method, both substrates 11A, 21A, and 31A can be cut using a dicer or laser light. Thereafter, as shown in FIG. 14 (f), a polarizing plate 46 a and a polarizing plate 46 b are attached to the outside of the glass substrate 31 and the element substrate 20 of the parallax dividing unit 30, respectively.

  Through the above steps, the liquid crystal display devices 1Ca and 1Cb are completed.

  Therefore, according to the third embodiment, in addition to the effects of the first and second embodiments, there are the following effects.

  (1) When the first substrate 11A is thinned in the state of the liquid crystal cell group 2C, the thickness of the first substrate 11A corresponding to the liquid crystal cells 2a and 2b varies among the plurality of liquid crystal cells 2a and 2b. Even in this case, according to the thickness of the first substrate 11A, a spacer 51 whose height is adjusted so that the surface of the first substrate 11A in contact with the liquid crystal layer 40 and the top surface of the parallax barrier 32 are parallel to each other is provided. Thus, the distance between the glass substrates 11a and 11b and the parallax barrier 32 between the liquid crystal cells 2a and 2b can be made uniform.

  (2) The substrate 31 can be bonded in a state before the liquid crystal cell is divided. When the substrates 31 divided into individual liquid crystal cells are bonded together, alignment is required for each liquid crystal cell. Moreover, since the size of the liquid crystal cell after the division differs depending on the type of product, it is necessary to prepare a jig for each type of product. On the other hand, in the case of the third embodiment in which bonding is performed before dividing, the alignment may be performed once, and one kind of jig and tool may be prepared according to the size of the substrate before dividing. Therefore, a product can be made at a lower cost.

(Configuration of electronic equipment)
Next, the configuration of an electronic device equipped with the liquid crystal display device of the first to third embodiments will be described. FIG. 15 is a perspective view illustrating a configuration of a display device for a car navigation system as an electronic device. As shown in FIG. 15, the display device 100 for a car navigation system has a display area 110 for displaying an image or the like. In the display area 110, the liquid crystal display device 1A (1B, 1C) is mounted. According to the configuration of the display device 100 for the car navigation system, the mounted liquid crystal display device 1 can simultaneously display two images in different directions. For example, a map image can be displayed on the driver's seat side, and a movie image can be displayed on the passenger seat side.

  In addition, as an electronic device equipped with the liquid crystal display device 1, in addition to the display device 100 for the car navigation system, it is applied to various electronic devices such as a mobile computer, a mobile phone, a digital camera, a digital video camera, an in-vehicle device, and an audio device. can do.

  In addition, it is not limited to said embodiment, The following modifications are mentioned.

  (Modification 1) In the first to third embodiments, the liquid crystal display device 1A (1B, 1C) having the parallax barrier 32 has been described, but instead of the parallax barrier 32, the parallax dividing unit 30 having a lenticular lens is configured. May be. In order to manufacture a liquid crystal display device provided with a lenticular lens, the parallax dividing unit 30 is replaced with a lenticular lens arranged and fixed on the glass substrate 31 as the first substrate in the manufacturing method of the above embodiment. That's fine. Then, the amount of adhesive between the lenticular lens and the first substrate 11A may be adjusted, or the spacer 50 (51) may be formed between the lenticular lens and the first substrate 11A. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 2) The mode of the liquid crystal layer 40 included in the liquid crystal cell 2 in the first to third embodiments is not limited to the TN mode, but is VA (Vertical Alignment), IPS (In Plain Switching), FFS (Fringe). Various modes such as Field Switching and STN (Super Twisted Nematic) can be adopted. Among these modes, VA, IPS, and FFS that can obtain a wide viewing angle are suitable. If the liquid crystal layer 40 is set to a mode in which a wide viewing angle is obtained, the first image and the second image that are viewed at a viewing angle tilted left and right from the front can be displayed with high brightness and high quality.

  (Modification 3) Although the liquid crystal display device 1A (1B, 1C) in the first to third embodiments has been described for displaying two images at the same time, the present invention is not limited to this, and three or more images are simultaneously displayed. It may be displayed. When displaying three images at the same time, in addition to the pixel 4L for displaying the first image and the pixel 4R for displaying the second image, a pixel 4C for displaying the third image is provided, and display light transmitted through these pixels is transmitted. What is necessary is just to comprise so that it injects in a different direction with the parallax barrier 32 of the parallax division part 30. FIG. In order to control the display direction, the distance between the color filter layer 12 and the parallax barrier 32 may be adjusted by adjusting the thickness of the first substrate 11A. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 4) In the first embodiment, after dividing the liquid crystal cells 2a and 2b, the glass substrates 11a and 10b and the parallax dividing unit 30 are bonded, but the first substrate 11A (including the glass substrates 11a and 11b). In this state, the first substrate 11A and the parallax dividing unit 30 may be bonded and then divided into the liquid crystal cells 2a and 2b. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 5) In the first embodiment, the distance between the glass substrates 11a and 11b and the parallax dividing unit 30 is adjusted by adjusting the amount of adhesive applied. However, the spacer is included in the adhesive, You may adjust the application quantity of the adhesive agent to contain. In this way, the distance between the glass substrates 11a and 11b and the parallax dividing unit 30 can be easily adjusted.

  (Modification 6) In the second and third embodiments, the spacers 50 (51) are provided corresponding to the formation regions of all the parallax barriers 32. However, the present invention is not limited to this, and may be provided arbitrarily. In other words, the spacer 50 (51) may be provided by thinning out to the extent that the distance between the first substrate 11A and the parallax barrier 32 can be secured. Even in this case, the distance between the first substrate 11A and the parallax barrier 32 can be regulated.

  (Modification 7) In the second and third embodiments, the spacer 50 (51) is formed on the first substrate 11A. However, the present invention is not limited to this, and the spacer 50 (51) is formed on the parallax barrier 32. May be. In this way, since the spacer 50 (51) can be reliably formed in the formation region of the parallax barrier 32, visibility can be improved.

  1, 1A, 1Aa, 1Ab, 1B, 1Ba, 1Bb, 1C, 1Ca, 1Cb ... liquid crystal display device, 2, 2a, 2b ... liquid crystal cell, 2A, 2B, 2C ... liquid crystal cell group, 10 ... counter substrate, 11, 11a, 11b ... 1st board | substrate 11A ... 1st board | substrate, 21A ... 2nd board | substrate, 30 ... parallax division part, 32 ... parallax barrier, 33 ... opening part, 35 ... adhesion layer, 40, 40a, 40b ... liquid crystal layer, 50 , 50a, 50b, 51 ... spacer, 50a ', 50b', 51 '... liquid material, 100 ... display device for car navigation system as electronic equipment, IJ ... droplet ejection device, D ... droplet.

Claims (9)

A method of manufacturing a liquid crystal display device comprising a liquid crystal cell and a parallax dividing unit bonded to the liquid crystal cell,
A liquid crystal cell group in which a second substrate is disposed opposite to the first substrate and a liquid crystal layer is provided between the first substrate and the second substrate to form a liquid crystal cell group composed of a plurality of the liquid crystal cells. Forming process;
A thinning process for reducing the thickness of the first substrate in the form of the liquid crystal cell group;
A plate thickness measurement step of measuring the reduced thickness of the first substrate;
An interval correction step of correcting an interval between the first substrate and the parallax dividing unit for each liquid crystal cell based on the measured thickness of the first substrate;
An adhering step of adhering the first substrate and the parallax dividing unit;
A dividing step of dividing the liquid crystal cell group into a plurality of the liquid crystal cells. In the manufacturing method of the liquid crystal display device of Claim 1,
In the interval correction step,
An adhesive amount adjusting step of adjusting an amount of an adhesive for bonding the first substrate and the parallax dividing unit for each liquid crystal cell based on the measured thickness of the first substrate; A method for manufacturing a liquid crystal display device. In the manufacturing method of the liquid crystal display device of Claim 1 or 2,
In the interval correction step,
A method of manufacturing a liquid crystal display device, comprising: a spacer arranging step of arranging a spacer between the first substrate and the parallax dividing unit. In the manufacturing method of the liquid crystal display device of Claim 3,
In the spacer arrangement step,
Based on the measured thickness of the first substrate, an application step of applying a liquid material containing the spacer material on the first substrate;
A solidifying step of solidifying the applied liquid material to form the spacer, and a method of manufacturing a liquid crystal display device. In the manufacturing method of the liquid crystal display device according to claim 3 or 4,
In the spacer arrangement step,
A method of manufacturing a liquid crystal display device, wherein the spacers having a uniform height are arranged for each liquid crystal cell. In the manufacturing method of the liquid crystal display device according to claim 3 or 4,
In the spacer arrangement step,
The liquid crystal display device, wherein the spacer has a uniform distance from the surface of the first substrate in contact with the liquid crystal layer to the top of the spacer based on the measured thickness of the first substrate. Production method. In the manufacturing method of the liquid crystal display device as described in any one of Claims 3-6,
In the spacer arrangement step,
A method of manufacturing a liquid crystal display device, wherein the spacer is arranged at a position corresponding to a region where the parallax dividing portion is formed in a plan view.   A liquid crystal display device manufactured using the method for manufacturing a liquid crystal display device according to claim 1.   An electronic apparatus comprising the liquid crystal display device according to claim 8.

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