JP2005148215A - Method for manufacturing liquid crystal display device, liquid crystal display device manufactured with the method, and electronic apparatus with liquid crystal display device mounted thereon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid crystal display device, with which a cell gap of each liquid crystal panel is uniformized in manufacturing a plurality of liquid crystal panels with a large-sized substrate (a gang printing substrate) by using a liquid crystal dropping and in vacuum laminating method, the liquid crystal display device manufactured with the method, and an electronic apparatus with the liquid crystal display device mounted thereon. <P>SOLUTION: In the method for manufacturing the liquid crystal display device which comprises dropping a liquid crystal to at least one out of a first substrate and a second substrate, subsequently laminating the first substrate and the second substrate to each other via a sealant in vacuo so as to form a large-sized panel mother substrate 1 including the plurality of liquid crystal panels, opening for atmosphere and subsequently dividing and cutting the mother substrate into the respective liquid crystal panels, vacuum regions 14 are formed on the large-sized panel mother substrate 1 so as to make atmospheric pressure applied to the respective liquid crystal panels 2 after being opened for atmosphere be nearly uniform. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a liquid crystal display device, a liquid crystal display device manufactured by a method for manufacturing a liquid crystal display device, and an electronic apparatus equipped with the liquid crystal display device. Specifically, a first substrate and a second substrate are dropped into a liquid crystal. Later, a large panel base material including a plurality of liquid crystal panels is formed by sticking each other with a sealing material in a vacuum atmosphere, and after releasing to the atmosphere, the large size panel base material is cut to manufacture a plurality of liquid crystal panels. The present invention relates to a method for manufacturing a device, a liquid crystal display device manufactured by a method for manufacturing a liquid crystal display device, and an electronic apparatus equipped with the liquid crystal display device.

  In general, in a liquid crystal display panel, a pair of transparent substrates (glass substrates) are overlapped via a frame-shaped seal and a spacer arranged inside the seal, and both the substrates are bonded by the seal and surrounded by the seal. The liquid crystal is sealed in the gap between the two substrates. In the case of an active matrix liquid crystal display panel (AM-LCD for short), an array substrate on which switching elements such as TFTs and TFDs are formed, and a color on which a color filter layer facing the array substrate is formed. And a filter substrate, and a structure in which liquid crystal is sealed between the opposing substrates.

  As a method for manufacturing a liquid crystal display panel, there are a liquid crystal injection method and a liquid crystal dropping vacuum bonding method (ODF). The liquid crystal injection method is a relatively old technology that has been implemented for a long time. On the other hand, the liquid crystal dropping vacuum bonding method has been proposed relatively recently as a technique capable of greatly shortening the liquid crystal sealing time as compared with the liquid crystal injection method, and its implementation has recently become widespread (for example, Patent Documents). 1). On the other hand, in recent years, a method has been used in which large format glass base materials including a plurality of liquid crystal panels are formed by bonding large format glasses to each other, and the large format panel base materials are cut to manufacture a plurality of liquid crystal panels.

  When manufacturing a plurality of liquid crystal panels using a large-sized glass and a liquid crystal dropping vacuum bonding method, the cell gap of each liquid crystal panel must be uniform. A liquid crystal panel with a non-uniform cell gap causes a display abnormality and becomes a defective product.

JP-A-10-123538

  However, the liquid crystal dropping vacuum laminating method applies atmospheric pressure to the vacuum region of the substrate, so that it is easy to uniformly pressurize the substrate surface and make the cell gap uniform compared to the normal pressure bonding method. There is a problem that the cell gap of the liquid crystal panel may become non-uniform depending on the size of the vacuum region. Such a phenomenon will be described with reference to FIG. FIG. 10 is a diagram illustrating an example of a cross-sectional structure of a large format panel base material having a plurality of liquid crystal panels. In the figure, 101 is an upper substrate, 102 is a lower substrate, 103 is a sealing material, 104 is a liquid crystal, and 105 is a vacuum region. After the release to the atmosphere, there is a possibility that a difference occurs in the pressurization of the atmosphere between the wide part and the narrow part as the vacuum region 105 and a difference in the cell gap of the liquid crystal panel. In a wide portion of the vacuum region 105, the substrate is likely to be bent, so that the cell gap of the liquid crystal panel may be non-uniform.

  The present invention has been made in view of the above problems, and in the case of manufacturing a plurality of liquid crystal panels using a liquid crystal dropping vacuum bonding method on a large-sized substrate (multi-faced substrate), the cell gap of each liquid crystal panel. An object of the present invention is to provide a method for manufacturing a liquid crystal display device capable of making the liquid crystal uniform, a liquid crystal display device manufactured by a method for manufacturing a liquid crystal display device, and an electronic device equipped with the liquid crystal display device.

  In order to solve the above-described problems and achieve the object, the present invention provides the first substrate and the second substrate in a vacuum atmosphere after liquid crystal is dropped on at least one of the first substrate and the second substrate. In a method for manufacturing a liquid crystal display device, a large-sized panel base material including a plurality of liquid crystal panels is formed by sticking each other through a sealing material, and divided into individual liquid crystal panels after being released to the atmosphere. And forming a vacuum region so that the atmospheric pressure applied to each liquid crystal panel after being opened to the atmosphere becomes substantially uniform.

  Thereby, in the large panel base material, the atmospheric pressure applied to each liquid crystal panel after being released to the atmosphere can be made substantially uniform, and the atmospheric pressure is uniformly applied to the entire large panel base material to prevent the substrate from being bent. Thus, the cell gap of each liquid crystal panel can be made uniform. As a result, it is possible to provide a method of manufacturing a liquid crystal display device that can make the cell gap of each liquid crystal panel uniform.

  According to a preferred aspect of the present invention, a frame-shaped first sealing material corresponding to the formation region of each liquid crystal panel is formed on at least one of the first substrate and the second substrate, and each liquid crystal panel It is desirable to form a frame-like second sealing material that encloses each of the first sealing materials so that the area of the vacuum region is substantially uniform. As a result, even in the case of manufacturing a plurality of medium-sized and large-sized liquid crystal panels, the area of the vacuum area around each liquid crystal panel of the large-format panel base material is substantially uniformized and released to the atmosphere by a simple method. The atmospheric pressure applied to each liquid crystal panel can be made substantially uniform.

  According to a preferred aspect of the present invention, a frame-shaped first sealing material corresponding to a formation region of the plurality of liquid crystal panels is formed on at least one of the first substrate and the second substrate, respectively, and each of the liquid crystals It is desirable to form a frame-shaped second sealing material that encloses the plurality of first sealing materials so that the area of the vacuum region for each panel is substantially uniform. Thereby, even in the case of producing a plurality of small-sized liquid crystal panels, the area of the vacuum region around each liquid crystal panel of the large-format panel base material can be made substantially uniform by a simple method. The atmospheric pressure applied to each liquid crystal panel can be made substantially uniform.

  According to a preferred aspect of the present invention, after the liquid crystal is dropped on the first or second substrate that is the inside of the first sealing material and the other substrate is bonded to the substrate in a vacuum atmosphere, It is desirable to cure the second sealing material and then cure the first sealing material. As a result, after the liquid crystal dropping / bonding step, most of the cell / gap equalization step that is started by being released to the atmospheric pressure is performed while the first sealing material located around the display unit (liquid crystal) is uncured. The first sealing material deforms sufficiently following the deformation and fluctuation of both substrates, and the substrate is not limited by the height of the first sealing material, and the vicinity of the first sealing material of the liquid crystal display panel The cell gap is also made uniform at the periphery of the display portion. As a result, a uniform cell gap can be obtained over the entire display portion including the periphery of the display portion of the liquid crystal panel, and the display quality can be maintained and improved at a high level.

  According to a preferred aspect of the present invention, it is desirable that the first sealing material is a thermosetting resin and the second sealing material is an ultraviolet curable resin. Thereby, the hardening timing of a 1st sealing material and the hardening timing of a 2nd sealing material can be isolate | separated easily.

  According to a preferred aspect of the present invention, the liquid crystal display device is preferably manufactured by the method for manufacturing a liquid crystal display device of the present invention. Thereby, a liquid crystal display device in which the cell gap of the liquid crystal panel is made uniform can be provided.

  According to a preferred aspect of the present invention, it is desirable to mount the liquid crystal display device of the present invention on an electronic device. Thereby, an electronic device equipped with a liquid crystal display device in which the cell gap of the liquid crystal panel is made uniform can be provided.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or that are substantially the same.

  Hereinafter, a manufacturing method of a liquid crystal display device according to an embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, an example will be described in which a plurality of liquid crystal panels are manufactured at once on a large-sized glass substrate that performs multiple chamfering using a liquid crystal dropping vacuum bonding method. FIG. 1 is a plan view schematically showing a large panel base material 1 according to an embodiment of the present invention. FIG. 2 is a plan view schematically showing a first substrate (lower substrate) 1a side of the large panel base material 1. It is. As shown in FIG. 1, a plurality of (2 × 3) liquid crystal panels 2 are formed at equal intervals on a large panel base material 1. As shown in FIG. 2, each liquid crystal panel 2 is formed with a frame-shaped sealing material 11 at the periphery thereof, and a liquid crystal 13 is sealed inside the first sealing material 11. Further, frame-shaped second sealing materials 12 each including each first sealing material 11 are formed so that the area of the vacuum region 14 around each liquid crystal panel 2 is substantially uniform. In this embodiment, as will be described later, the area of the vacuum region 14 for each liquid crystal panel 2 is made substantially uniform so that the atmospheric pressure applied to each liquid crystal panel 2 after being released to the atmosphere becomes substantially uniform.

  Next, a method for manufacturing a liquid crystal display device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a flowchart of the manufacturing process of the liquid crystal display device according to the embodiment of the present invention. FIG. 4 is a plan view of the one-side substrate on which the seal is formed in the manufacturing process of the liquid crystal display device according to the embodiment of the present invention. 5 is a panel cross-sectional view in a cross section perpendicular to the substrate after the cell gap is uniformed, and FIG. 6 is a panel cross-sectional view in a cross section perpendicular to the substrate after cutting. In the first substrate 1a and the second substrate 1b, a region where the liquid crystal panel 2 is formed is referred to as a liquid crystal panel formation region.

  As shown in FIG. 3, the manufacturing process of the liquid crystal dropping vacuum bonding method of Example 1 of the present invention includes a rubbing process (S1), a seal forming process (S2), a liquid crystal dropping / bonding process (S3), and a second process. A sealing material curing step (temporary bonding step: S4), a cell gap uniformizing step (S5), a first seal curing step (main bonding step: S6), and a liquid crystal panel cutting step (S7).

[Rubbing step (S1)]
After a patterning process in which an insulating film, a transparent electrode film, a switching element such as TFT or TFD, a color filter layer, and the like necessary according to the liquid crystal display method are formed on the first substrate 1a and the second substrate 1b, the liquid crystal A rubbing step (S1) for printing an alignment film (such as a polyimide film) and creating a groove for alignment is performed so that the molecules can be arranged. The first substrate 1a and the second substrate 1b are constituted by large glass substrates.

[Seal formation step (S2)]
After the rubbing step (S1), the seal forming step (S2) is performed, and the first sealing material 11 and the second sealing material 12 are drawn on the first substrate 1a constituting the liquid crystal display panel as shown in FIG. Or print. Note that the first sealing material 11 and the second sealing material 12 may be drawn or printed on the second substrate 1b. Alternatively, the first sealing material 11 may be drawn or printed on the first substrate 1a, and the second sealing material 12 may be drawn or printed on the second substrate 1b. When drawing and forming a sealing material, a dispenser and an inkjet device can be used. Further, when the sealing material is printed and formed, it can be printed by screen printing.

  As shown in FIG. 4, the first sealing material 11 and the second sealing material 12 are printed in a frame shape on the first substrate 1a. The first sealing material 11 is drawn or printed in a frame shape along the peripheral edge of the liquid crystal panel formation region. The second sealing material 12 is drawn or printed in a frame shape so as to include the plurality of first sealing materials 11. For example, an epoxy-based thermosetting resin can be used for the first sealing material 13, and an acrylic-based ultraviolet curable resin can be used for the second sealing material 12, for example.

[Liquid crystal dropping and bonding step (S3)]
After the seal printing step (S2), a liquid crystal dropping / bonding step (S3) is performed. In the manufacturing method of the liquid crystal dropping method, a liquid crystal dropping / bonding process in which liquid crystal is dropped onto the lower substrate before the two substrates are bonded together is adopted. One example will be described below.

  An assembly device (not shown) used in the liquid crystal dropping and bonding step is sandwiched between a pressurizing mechanism having an upper surface plate that can move up and down and a lower surface plate that can move horizontally, and an upper surface plate and a lower surface plate. And an evacuation mechanism capable of evacuating the atmosphere surrounding the liquid crystal display panel. The lower surface plate has a larger area than the upper surface plate, and when the upper surface plate overlaps, the peripheral portion of the lower surface plate protrudes from the upper surface plate. The vacuum exhaust mechanism is provided with an upper lid portion having an upper surface and a peripheral wall. The upper lid has an upper surface plate in its interior and can be moved up and down. By descending, the end surface of the peripheral wall is pressed and adhered to the peripheral edge of the lower surface plate, and the large panel base material 1 is sealed. Can do. Further, a pipe line for evacuating is provided on the peripheral wall of the upper lid portion. Although the upper surface plate can be moved up and down together with the upper lid portion, it can be moved up and down independently, and the amount of pressure applied to the large-format panel base material 1 can be finely adjusted.

  In the liquid crystal dropping and bonding step, first, the second substrate 1b serving as the upper substrate is adsorbed to the upper surface plate of the assembling apparatus. Next, the first substrate 1a, which is the lower substrate shown in FIG. Next, the liquid crystal 13 is dropped on a region surrounded by the first sealing material 11 on the first substrate 1a fixed to the lower surface plate. After the liquid crystal is dropped, the lower platen is slid to the bottom of the upper platen and aligned. The upper platen is lowered to superpose the first substrate 1a and the second substrate 1b, and the upper lid portion is lowered to lower the upper lid portion. The large-sized panel base material 1 is formed by pressing and closely contacting the end surface of the peripheral wall to the peripheral edge of the lower surface plate. Next, the atmosphere surrounding the large panel base material 1 sandwiched between the upper surface plate and the lower surface plate is evacuated to a vacuum. Thereafter, the pressing force of the upper surface plate is increased, the large panel base material 1 is compressed, and the gap between the first substrate 1a and the second substrate 1b is finely adjusted to a desired value. Thus, the first substrate 1a and the second substrate 1b are bonded together. Thereafter, the pressurization by the pressurization mechanism is released, the lower surface plate is slid, and after neutralization, the large-format panel base material 1 is taken out and sent to the seal curing step. The liquid crystal dropping may be performed in a vacuum atmosphere.

[Second sealing material curing step (temporary bonding step: S4)]
A 2nd sealing material hardening process (S4) is implemented after a liquid crystal dropping bonding process (S3). This is cured by irradiating the second sealing material 12 with ultraviolet rays. The second sealing material 12 is cured immediately after the atmosphere surrounding the large panel base material 1 is released to atmospheric pressure in the liquid crystal dropping and bonding step (S3) described above. Until the second sealing material 12 is cured, the large-format panel base material 1 is taken out from the assembly device used in the liquid crystal dropping / bonding step, transported to the ultraviolet irradiation device, and further subjected to ultraviolet irradiation. . In addition, an ultraviolet irradiation device is incorporated in the assembly device used in the liquid crystal dropping and bonding process, and after the liquid crystal display panel is bonded, the second sealing material 12 is irradiated with ultraviolet rays in a vacuum atmosphere before the atmospheric pressure is released. It may be. Thereby, the vacuum degree inside the second sealing material 12 (vacuum region 14) can be secured at a higher level.

[Cell gap equalization step (S5)]
Uniformity of the gap (cell gap) between the two substrates bonded together proceeds due to the substrate surface being pressed into the atmosphere due to the pressure difference between the pressure inside the large panel base material 1 and the atmospheric pressure. . That is, the first substrate 1a and the second substrate 1b are deformed and fluctuated by being pressed by the atmosphere, and when the liquid crystal 13 in the liquid crystal panel or a spacer is used, the spacer is deformed by being narrowly pressed by both substrates. As a result, the cell gap is gradually made uniform (see FIG. 5). Here, in this embodiment, since the area of the vacuum region 14 around each liquid crystal panel 2 is made substantially uniform, it is possible to make the atmospheric pressure applied to each liquid crystal panel 2 substantially uniform after opening to the atmosphere. In addition, the atmospheric pressure is averagely applied to the entire large panel base material 1, and the atmospheric pressure can be made the same in the central portion and the outer peripheral portion. Thereby, the cell gap of the liquid crystal panel 2 of the center part of the large format panel base material 1 and an outer peripheral part can be made uniform, and it becomes possible to make the cell gap of each liquid crystal panel 2 uniform, and between each liquid crystal panel. Cell gap variations can be prevented.

  Further, in this cell gap uniformizing process, since the first sealing material 11 is uncured, the first sealing material 11 is also tightly pressed by both the substrates and sufficiently deforms according to the deformation / variation of both the substrates. Even in the region in the vicinity of the first seal material, the cell gap is made uniform to approximately the same extent as the center of the display portion, and the cell gap in each liquid crystal panel 2 can be made uniform. In the process of making the cell gap uniform, even after the differential pressure between the liquid crystal layer in the first sealing material 11 and the atmosphere decreases, the gap between the first sealing material 11 and the second sealing material 12 is reduced. Since the vacuum region 14 maintains the differential pressure from the atmospheric pressure, the cell gap can be made uniform at a high level. This cell gap uniformizing process is performed until the force between the air and the large panel base material 1 is balanced after the large panel base material 1 is left under atmospheric pressure.

[First seal curing step (main bonding step: S6)]
After the second sealing material 12 is cured, the large-sized panel base material 1 is fired to cure the first sealing material 11. It is desirable that the first sealing material 11 remains uncured during the cell / gap uniformization process, and the curing is completed immediately after the cell / gap uniformization is achieved.

[Liquid crystal panel cutting step (S7)]
After the seal curing step (S6), a liquid crystal panel cutting step (S7) is performed. The large-sized panel base material 1 is cut by a cutting line that extends along the outer periphery of the first sealing material 11 at a predetermined interval, and is separated into single liquid crystal panels 2. Thereby, a single liquid crystal panel 2 as shown in FIG. 6 is cut out, and four liquid crystal panels 2 are manufactured. The cutting line is set so as to include necessary modules such as a drive circuit attached to the outside of the first sealing material 11.

  As described above, according to the above embodiment, the area of the vacuum region 14 around each liquid crystal panel 2 is formed to be substantially uniform, so that the distribution of the vacuum region 14 of the large-format panel base material 1 is made substantially uniform. Accordingly, it is possible to make the atmospheric pressure applied to each liquid crystal panel 2 substantially uniform after being released into the atmosphere, and the cell gap of the liquid crystal panel can be made uniform. As a result, it is possible to provide a method of manufacturing a liquid crystal display device that can make the cell gap of each liquid crystal panel uniform.

  Further, according to the above embodiment, the frame-shaped first sealing material 11 is formed on the peripheral edge of at least one liquid crystal panel formation region of the first substrate 1a or the second substrate 1b, and the vacuum around each liquid crystal panel 2 is formed. Since the second sealing material 12 including each sealing material 11 is formed so that the area of the region becomes substantially uniform, each liquid crystal panel is formed when a plurality of medium / large size liquid crystal panels are formed. The area of the vacuum region around the panel can be made substantially uniform by a simple method, and the atmospheric pressure applied to each liquid crystal panel can be made substantially uniform after being released to the atmosphere.

  Moreover, according to the said Example, since the 1st sealing material 11 is hardened after hardening of the 2nd sealing material 12, the 2nd sealing material 12 can be hardened immediately after a dripping and bonding process, Thus, the degree of vacuum in the panel can be maintained at a high level for a long time, and both substrates can be sufficiently pressurized by atmospheric pressure in the cell gap uniformizing process. In addition, the first sealing material 11 located around the display unit (liquid crystal) is uncured during the most part of the cell / gap uniformizing process which is started by being released to atmospheric pressure after the dropping / bonding process. The first sealing material 11 is deformed sufficiently following the deformation and fluctuation of both substrates, and the substrate is not limited by the height of the first sealing material, and the display portion in the vicinity of the first sealing material 11 can be applied. The cell gap is also made uniform at the periphery. As a result, a uniform cell gap can be obtained over the entire display unit including the periphery of the display unit of the liquid crystal panel, and the display quality can be maintained and improved at a high level.

  Moreover, according to the said Example, since the thermosetting resin is used as the 1st sealing material 11, and the ultraviolet curable resin is used as the 2nd sealing material 12, the hardening timing of the 1st seal | sticker 11 and the 2nd sealing material 12 are used. The curing timing can be easily separated. That is, when the large-format panel base material 1 is irradiated with ultraviolet rays in order to cure the second sealing material 12, the first sealing material 11 does not react and therefore does not cure, whereas the first sealing material 11 is cured. Even if the large-sized panel base material 1 is heated, the second sealing material 12 does not react and does not harden, so that the curing timing of the first sealing material 11 and the curing timing of the second sealing material 12 can be easily separated. Can do.

(Modification)
In the above embodiment, the case where a plurality of medium / large size liquid crystal panels 2 are formed has been described. In the modification, a case where a large number of small size liquid crystal panels are formed will be described. FIG. 7 is a plan view schematically showing a large panel base material 1 according to a modification of the present invention. FIG. 8 is a plan view schematically showing a first substrate side (lower substrate) 1a of the large panel base material 1. It is.

  As shown in FIG. 7, a plurality of (8 × 8) liquid crystal panels 2 are formed on the large panel base material 1 at equal intervals. Further, as shown in FIG. 8, each liquid crystal panel 2 is formed with a frame-shaped sealing material 11 at the periphery thereof, and a liquid crystal 13 is sealed inside the first sealing material 11. Furthermore, a frame-shaped second sealing material 12 that encloses the first sealing material 11 is formed so that the area of the vacuum region 14 around each liquid crystal panel 2 is substantially uniform.

  According to such a modification, the frame-shaped sealing material 11 is formed on the peripheral edge of the liquid crystal panel formation region on at least one of the first substrate 1 a or the second substrate 1 b, and the vacuum region 14 around each liquid crystal panel 2. Since the frame-shaped second sealing material 12 that encloses the first sealing material 11 is formed so that the area of the liquid crystal panel is substantially uniform, each liquid crystal panel is formed when a plurality of small-sized liquid crystal panels are formed. 2 can be made substantially uniform by a simple method, and the atmospheric pressure applied to each liquid crystal panel 2 after being released to the atmosphere can be made substantially uniform.

[Application example to electronic equipment]
Next, specific examples of electronic devices to which the liquid crystal display device according to the present invention can be applied will be described with reference to FIG. FIG. 9A is a perspective view illustrating an example in which the liquid crystal display device according to the present invention is applied to a display unit of a portable personal computer (so-called notebook personal computer) 30. As shown in the figure, the personal computer 30 includes a main body 32 having a keyboard 31 and a display 33 to which the liquid crystal display device according to the present invention is applied. FIG. 9-2 is a perspective view showing an example in which the liquid crystal display device according to the present invention is applied to the display unit of the mobile phone 40. As shown in the figure, the mobile phone 40 includes a plurality of operation buttons 41, a receiving mouth 42, a mouth opening 43, and a display unit 44 to which the electro-optical device according to the present invention is applied.

  The electronic device according to the present invention includes a portable information device called a PDA (Personal Digital Assistants), a personal computer, a workstation, a digital still camera, an in-vehicle monitor, a digital video camera, The present invention can be widely applied to electronic devices such as liquid crystal televisions, viewfinder type, monitor direct-view type video tape recorders, car navigation devices, pagers, electronic notebooks, calculators, word processors, workstations, video phones, and POS terminals.

  The liquid crystal display device according to the present invention can be used for transmissive, reflective, and transflective, monochrome, and color liquid crystal display devices. The liquid crystal display device according to the present invention is used for a passive matrix type liquid crystal display device or an active matrix type liquid crystal display device (for example, a liquid crystal panel provided with a TFT (thin film transistor) or a TFD (thin film diode) as a switching element). can do. In addition, an electronic device equipped with the liquid crystal display device according to the present invention includes a mobile phone, a portable information device called PDA (Personal Digital Assistants), a portable personal computer, a personal computer, a workstation, a digital still camera, and an in-vehicle monitor. Widely used in electronic devices such as digital video cameras, LCD TVs, viewfinder type, monitor direct-view type video tape recorders, car navigation systems, pagers, electronic notebooks, calculators, word processors, workstations, video phones, and POS terminals can do.

The top view which shows typically the large format panel base material which concerns on the Example of this invention. The top view which shows typically the 1st board | substrate (lower board | substrate) side of the large format panel base material which concerns on the Example of this invention. The flowchart of the manufacturing process of the liquid crystal display device which concerns on the Example of this invention. The top view of the single-sided board | substrate with which the seal | sticker in the manufacturing process of the liquid crystal display device which concerns on the Example of this invention was formed. The panel sectional view in the section perpendicular to the substrate after cell gap equalization. The panel sectional view in the section perpendicular to the substrate after cutting. The top view which shows typically the large format panel base material which concerns on the modification of this invention. The top view which shows typically the 1st board | substrate side (lower board | substrate) of a large format panel base material. 1 is a perspective view of a personal computer equipped with an electro-optical device according to an embodiment. 1 is a perspective view of a mobile phone including an electro-optical device according to an example. The figure which shows an example of the cross-section of the large format panel base material which has a some liquid crystal panel.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Large format base material, 1a 1st board | substrate, 1b 2nd board | substrate, 2 Liquid crystal panel 11 1st sealing material, 12 2nd sealing material, 13 Liquid crystal, 14 Vacuum region, 30 Personal computer, 31 Keyboard, 32 Main-body part, 33 Display unit, 40 mobile phone, 41 operation button, 42 earpiece, 43 mouthpiece, 44 display unit

Claims (7)

A large format including a plurality of liquid crystal panels in which a liquid crystal is dropped onto at least one of the first substrate and the second substrate, and then the first substrate and the second substrate are bonded to each other through a sealing material in a vacuum atmosphere. In the manufacturing method of a liquid crystal display device in which a panel base material is formed and divided into individual liquid crystal panels after being released to the atmosphere,
A manufacturing method of a liquid crystal display device, wherein a vacuum region is formed in the large panel base material so that an atmospheric pressure applied to each liquid crystal panel after being opened to the atmosphere becomes substantially uniform. Forming at least one of the first substrate and the second substrate a frame-shaped first sealing material corresponding to the formation region of each liquid crystal panel;
A frame-shaped second sealing material that encloses each of the first sealing materials is provided on at least one of the first substrate and the second substrate so that the area of the vacuum region for each liquid crystal panel is substantially uniform. The method of manufacturing a liquid crystal display device according to claim 1, wherein the liquid crystal display device is formed. Forming at least one of the first substrate and the second substrate a frame-shaped first sealing material corresponding to the formation region of the plurality of liquid crystal panels;
A frame-shaped second sealing material containing the plurality of first sealing materials in at least one of the first substrate and the second substrate so that the area of the vacuum region for each liquid crystal panel becomes substantially uniform. The method of manufacturing a liquid crystal display device according to claim 1, wherein:   Liquid crystal is dropped on the first substrate or the second substrate that is inside the first sealing material, and the other substrate is bonded to the inside of the first sealing material in a vacuum atmosphere, and then the second sealing material is cured. The method for manufacturing a liquid crystal display device according to claim 1, wherein the first sealing material is cured thereafter.   5. The method of manufacturing a liquid crystal display device according to claim 4, wherein the first sealing material is a thermosetting resin and the second sealing material is an ultraviolet curable resin.   A liquid crystal display device manufactured by 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 6.

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