KR20060076197A - Method of assembling liquid crystal display panel and apparatus of assembling the same - Google Patents

Abstract

The present invention relates to a method for assembling a liquid crystal display panel and an assembling apparatus, which includes a fixing apparatus, a plurality of fixing cells, a plurality of moving apparatuses, and a plurality of position detecting apparatuses. This assembling method first provides a first substrate, wherein a plurality of first assemblies are formed on the first substrate, and the first substrate is fixed on the fixing device. It also provides a plurality of first assembly cells that have already been cut and each second assembly cell is fixed on a stationary cell, respectively. The fixed cell is moved using a moving device, and the first assembly cell and the second assembly cell are corresponded to each other using a position detection device. In addition, the second assembly cell and the first assembly cell may be aligned, and then both may be assembled.

Liquid Crystal Display Panel, Substrate, Fixing Device, Moving Device, Array Cell, Assembly Cell

Description

Method of assembling and assembling the liquid crystal display panel {Method of assembling liquid crystal display panel and apparatus of assembling the same}

1 is a conceptual diagram illustrating a method of assembling a conventional liquid crystal display panel.

2 is a conceptual view illustrating another conventional liquid crystal display panel assembly method.

3 is a conceptual diagram illustrating an assembly apparatus of a liquid crystal display panel according to an embodiment of the present invention.

4A to 4E are conceptual views illustrating a method of assembling a liquid crystal display panel according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

110, 210: first substrate

111, 211: liquid crystal layer

112: thin film transistor array cell

116, 216 sealant

120, 220: second substrate

122: color filter array cell

212 thin film transistor array panel

222: color filter array panel

310: fixing device

320: fixed cell

330: mobile device

332: first mobile device

334: second mobile device

336: third mobile device

340: position detection device

342: Coarse adjustment position detector

344: Fine adjustment position detector

350: rotating equipment

400: liquid crystal display panel

410: first substrate

412: first assembly cell

420: second assembly cell

422: second alignment notation

430: liquid crystal layer

440: sealant

442: first alignment notation

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly method and an assembly apparatus, and more particularly, to an assembly method and an assembly apparatus of a liquid crystal display panel.

In general, with the advancement of multimedia technology, the transmission of video information is mostly converted from analog to digital transmission, and the volume of video communication and video devices is becoming lighter and thinner for blending into modern lifestyle. Although the conventional cathode ray tube (CRT) display device has characteristics such as excellent display quality and low cost, the internal electronic chamber structure allows the display device to satisfy the needs of thinning, light weight, and low power consumption. There is a problem such as radiation injury to the eyes when viewing the user. Therefore, with the recent maturation of photovoltaic and semiconductor manufacturing technology, flat panel display has brought vigorous development, among which liquid crystal display (LCD) has low voltage operation, radiation free reflection, and light weight. On the basis of the advantages such as small volume, the conventional cathode ray tube display device is gradually replaced, and in recent years, it has become a mainstream of display device products.

The liquid crystal display mainly includes a liquid crystal panel and a back light module, among which a liquid crystal display panel includes a color filter substrate (C / F), a thin film transistor array substrate, and a thin film transistor. array) and a liquid crystal layer disposed between the two substrates.

In the manufacturing process of the liquid crystal display panel, a plurality of color filter array cells are formed on one substrate, and a plurality of thin film transistor array cells are formed on another substrate. The liquid crystal layer is injected, and the color filter array cell and the thin film transistor array cell are assembled to form a plurality of liquid crystal display panels. The conventional assembly method was to assemble a color filter array cell and a thin film transistor array cell using an assembly method of substrate to substrate or panel to panel. The prior art will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a conventional method of assembling a liquid crystal display panel. This belongs to the assembly method of the substrate to the substrate. Referring to FIG. 1, a plurality of thin film transistor array cells 112 are formed on a first substrate 110, and a plurality of color filter array cells 122 are formed on a second substrate 120. A sealant 116 was applied around the transistor array cell 112. Next, the liquid crystal layer 111 is dropped into a region where the sealant 116 is applied using, for example, a drop injection method (ODF). The second substrate 120 is moved so that the color filter array cell 122 on the second substrate 120 and the thin film transistor array cell 112 on the first substrate 110 correspond to each other. In addition, the sealant 116 causes the thin film transistor array cell 112 to be bonded to the color filter array cell 122. Next, when the first substrate 110 and the second substrate 120 are cut at the same time, a plurality of liquid crystal display panels may be formed.

Using the assembling method of the liquid crystal display panel of FIG. 1, of course, the plurality of color filter array cells 122 can be assembled with the plurality of thin film transistor array cells 112 at the same time, so the assembly cost is relatively low and the assembly speed is relatively low. fast. However, as the size of liquid crystal display panels increases in recent years and substrate sizes increase, this method also increases the difficulty of assembling the thin film transistor array cell 112 and the color filter array cell 122, and thermal expansion of two substrates. Due to factors such as the shrinkage effect and the difference of the exposure machine during the manufacturing process of the two substrates, there was a problem that may cause a deviation exceeding a predetermined specification during assembly.

2 is a conceptual diagram illustrating another conventional method of assembling a liquid crystal display panel. This is a panel-to-panel assembly method. Referring to FIGS. 1 and 2 simultaneously, the difference between FIGS. 1 and 2 is that the first substrate 210 and the second substrate 220 are already cut and thus each of the plurality of independent thin film transistor array panels 212 and the color filter. The array panel 222 is formed, and the sealant 216 is coated around the thin film transistor array panel 212. Similarly, the liquid crystal layer 211 is injected into each region to which the sealant 216 is applied. Next, each color filter array panel 222 is moved so that the color filter array panel 222 and the thin film transistor array panel 212 correspond to each other. The sealant 216 causes the color filter array cell 222 to be bonded to the thin film transistor array cell 212 therein, and the above procedure is repeatedly performed to form a plurality of liquid crystal display panels. In addition, the liquid crystal injection process may use a general vacuum suction method, and the liquid crystal is injected after the color filter array panel 222 and the thin film transistor array cell 212 are bonded.

In the method of assembling the liquid crystal display panel illustrated in FIG. 2, each color filter array panel 222 and each thin film transistor array panel 212 are sequentially assembled, which is relatively higher than that of the substrate-to-substrate assembly of FIG. 1. Relatively high accuracy can be achieved. However, such a panel-to-panel assembly method requires only one liquid crystal display panel at a time, which requires a relatively high assembly cost and assembly time.

Therefore, the present invention is to provide a technique for assembling a liquid crystal display panel based on the above description to combine a relatively high accuracy and a relatively low time cost, which is a subject we can study.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to achieve an accuracy improvement and an assembly cost reduction effect through an assembly method of a liquid crystal display panel.

In addition, another object of the present invention is to provide an assembly apparatus for a liquid crystal display panel to achieve an accuracy and assembly cost reduction effect when assembling a liquid crystal display panel.

The present invention provides a method for assembling a liquid crystal display panel, which first provides a first substrate, and a plurality of first assemblies are formed on the first substrate. Next, a plurality of second assemblies which are already cut are provided, and a liquid crystal layer is filled between the first assembly and the second assembly, respectively, and the second assembly cell and the first assembly cell on the first substrate are simultaneously provided. Bond.

According to the method of assembling the liquid crystal display panel described in the present invention, after bonding the second assembly cell and the first assembly cell on the first substrate, for example, a plurality of display panels including a cutting procedure for the first substrate are included. To form. Further, the first assembly cell on the first substrate is, for example, one thin film transistor array cell, and the second assembly cell is, for example, one color filter array cell. Alternatively, the first assembly cell on the first substrate is, for example, one color filter array cell, and the second assembly cell is, for example, one thin film transistor array cell.

According to the assembling method of the liquid crystal display panel described in the present invention, the method of simultaneously bonding the second assembly cell and the first assembly cell on the first substrate is a method of bonding both by using an ultraviolet sealant, for example.

The present invention provides a device for assembling a liquid crystal display panel, which is used for assembling a plurality of first assemblies of a first substrate and a plurality of already cut second assemblies, wherein the assembling device of the liquid crystal display panel is one fixing device. And a plurality of fixed cells, a plurality of moving devices, and a plurality of position detection devices. The fixing device is used to fix the first substrate on the fixing device, and the plurality of fixing cells are used to fix the second assembly cell on the plurality of fixing cells. Each moving device is disposed on each fixed cell, and each position detecting device is installed on each fixed cell.

According to the assembling apparatus of the liquid crystal display panel described in the present invention, each moving device includes, for example, a first moving device, a second moving device, and a third moving device. The first moving device is for example used to move the position of the fixed cell in the X direction, the second moving device is used for moving the position of the fixed cell in the Y direction, for example, and the third moving device is used for example of the fixed cell. It is used to move the position in the Z direction. The assembling apparatus of this liquid crystal display panel includes a plurality of rotating apparatuses, for example, each rotating apparatus is used to rotate a fixed cell.

According to the assembling apparatus of the liquid crystal display panel described in the present invention, each position detecting device includes, for example, a plurality of coarse adjustment position detectors and a plurality of fine adjustment position detectors. Such a coarse adjustment position detector and a fine adjustment position detector are, for example, a charged couple device, and the fine adjustment position detector is installed in four corners of a fixed cell, for example. In addition, the fixing device and the fixing cell are, for example, an electrostatic adsorption fixing device.

The present invention provides another method for assembling a liquid crystal display panel, which is assembled using a liquid crystal display panel assembling apparatus, and the assembling apparatus of the liquid crystal display panel includes one fixing device, a plurality of fixing cells, and a plurality of It includes a moving device and a plurality of position detection devices. In this liquid crystal display assembly method, a first substrate is first provided, a plurality of first assemblies are formed on the first substrate, and the first substrate is fixed on the fixing device. Next, a plurality of second assembly cells that have already been cut are provided, and each second assembly cell is fixed on the fixed cell, respectively. The liquid crystal layer is filled between the first assembly cell and the second assembly cell, respectively. In addition, the fixed cell is moved using the moving device, and the first assembly cell and the second assembly cell are corresponded to each other using the position detection device. Then, the moving device is driven to join the second assembly cell and the first assembly cell on the first substrate.

According to the method of assembling the liquid crystal display panel described in the present invention, after bonding the second assembly cell and the first assembly cell on the first substrate, for example, a plurality of display panels including a cutting procedure for the first substrate are included. To form. In addition, during the procedure of moving the fixed cell by using the moving device and by using the position detecting device to correspond to each other, the first assembly cell and the second assembly cell, for example, after the coarse adjustment of the moving device is performed, Again, this involves the process of fine tuning for these mobile devices.

According to the assembling method of the liquid crystal display panel described in the present invention, the first assembly cell on the first substrate is, for example, a plurality of thin film transistor array cells, and the second assembly cell is a plurality of color filter array cells. Alternatively, the first assembly cell on the first substrate is, for example, a plurality of color filter array cells, and the second assembly cell is a plurality of thin film transistor array cells. In addition, a method of simultaneously bonding the second assembly cell and the first assembly cell on the first substrate is a method of bonding both by using an ultraviolet sealant.

In the method of assembling the liquid crystal display panel of the present invention, a plurality of first assemblies are assembled on the first substrate at the same time using a plurality of second assemblies which are already cut, thereby achieving a relatively high accuracy and a relatively low manufacturing cost. In addition, the assembling apparatus of the liquid crystal display panel of the present invention is provided with a position detection device, in particular, it is possible to further improve the accuracy during assembly.

In order to make the above and other objects, features and advantages of the present invention more clear and easy to understand, the following detailed description will be given in conjunction with the accompanying drawings, for example, a comparatively superior embodiment.

3 is a schematic view showing an assembly apparatus of a liquid crystal display panel according to an embodiment of the present invention. Referring to FIG. 3, the assembling device 300 of the liquid crystal display panel includes one fixing device 310, a plurality of fixing cells 320, a plurality of moving devices 330, a plurality of rotating facilities 350, and a plurality of rotating devices 350. Position detection device 340 is included. The assembling device 300 is used to assemble the plurality of first assembly cells 412 and the plurality of second assembly cells 420 already cut on the first substrate 410.

Referring to FIG. 3, the fixing device 310 and the fixing cell 320 are, for example, electrostatic adsorption fixing devices. The moving device 330 includes a first moving device 332, a second moving device 334, and a third moving device 336, and the first moving device 332 is positioned in the X direction of the fixed cell 320. The second moving device 334 is used to move the Y-direction position of the fixed cell 320, and the third moving device 336 is used to move the Z-direction position of the fixed cell 320. . In addition, the rotating device 350 is used to rotate the fixed cell 320. In addition, the position detection device 340 is used to perform a precise position with respect to the second assembly cell 420 on the plurality of fixed cells 320. In a comparatively preferred embodiment, the position detection device 340 includes a plurality of roughly tuned position detectors 342 and a plurality of finely tuned position detectors 344, and the fine tuned position detectors 344. Is installed at four corners of the fixed cell 320. The position detecting device 340 is, for example, a charged couple device or other type of optical sensor.

4A to 4E are conceptual views illustrating a method of assembling a liquid crystal display panel according to an embodiment of the present invention. This liquid crystal display assembly method proceeds using the liquid crystal display assembly apparatus 300 described in FIG. First, referring to FIG. 4A, when the assembly process starts, not only the first substrate 410 is provided but also the first substrate 410 is fixed to the surface of the fixing device 310, and on the first substrate 410. A plurality of first assemblies 412 are already formed, and a sealant 440, for example, an UV curable sealant, is applied to the periphery of each first assembly cell 412. In addition, each second assembly cell 420 that is already cut is fixed to each of the fixed cells 320. The first assembly cell 412 and the second assembly cell 420 may be, for example, a thin film transistor array cell and a color filter array cell, or the first assembly cell 412 and the second assembly cell 420 may be, for example. For example, it should be noted that they are color filter array cells and thin film transistor array cells, respectively.

4B, in the assembling process, for example, first, the first assembly cell 412 and the second assembly cell 420 are placed in a vacuum chamber (not shown) and the second assembly cell 412 is formed. After filling the liquid crystal layer 430 between the second assembly cells 420, the vacuum extraction for the vacuum chamber is performed. The liquid crystal layer 430 is filled into a region in which the sealant 440 around the first assembly cell 412 is applied, for example, by one drop fill (ODF).

4C to 4D only show an arbitrary first assembly cell 412 and a corresponding second assembly cell 420 on the substrate 410. However, we should note that the assembly method of the present invention proceeds with the assembly of the plurality of first assembly cells 412 and the plurality of second assembly cells 420 on the substrate 410 at the same time.

Also, referring to FIG. 4C, the fixed cell 320 is moved by using the moving device 330 such that the first assembly cell 412 and the second assembly cell 420 correspond to each other. In order to ensure that the first assembly cell 412 and the second assembly cell 420 are correctly combined, the first assembly of the plurality of fixed cells 320 is performed by using the position detecting device 340 installed on the second assembly cell 420. 2, the correct position for the assembly cell 420 is performed.

In a comparatively good embodiment, the position detection device 340 is used to simultaneously advance the correct position of the second assembly cell 420 on the plurality of fixed cells 320, for example, the first assembly on the substrate 410. Alignment is performed using the first alignment mark 442 formed around the cell 412 and the second alignment mark 422 formed around the second assembly cell 420. The first alignment mark 442 and the second alignment mark 422 are formed together in the process of forming the first assembly cell 412 and the second assembly cell 420, for example. Metal. In addition, a through hole or a transparent visible hole is installed at a position where the fixed cell 320 and the position detection device 340 correspond to each other, and the second alignment mark 422 formed around the second assembly cell 420 It is formed on a transparent substrate. Accordingly, the position detection device 340 detects the relative position of the first alignment mark 442 and the second alignment mark 422 through the through hole or the transparent visible hole, thereby providing a first assembly on the substrate 410. It is determined whether the cell 412 is aligned with the second assembly cell 420. In other words, the position adjustment of the fixed cell 320 is performed by controlling the operation of the mobile device 330 and the rotary device 350 through the detection of the position detection device 340.

In one embodiment, the detailed execution procedure first moves the second assembly cell 420 to the top of the first assembly cell 412 through the moving device 330 and the rotating device 350, for example. The distance between the first assembly cell 412 and the second assembly cell 420 is close. When the distance between the first assembly 412 and the second assembly 420 approaches a first suitable distance, the coarse adjustment position detector 342 is activated to perform coarse alignment. The alignment accuracy of the assembly cell 412 and the second assembly cell 420 is, for example, to meet the already set course alignment tolerance. Next, when the moving device 330 and the rotating device 350 are executed again, when the distance between the first assembly cell 412 and the second assembly cell 420 approaches, for example, a second suitable distance, The micro alignment tolerance of which the alignment accuracy of the first assembly cell 412 and the second assembly cell 420 is expected, for example, by activating the fine adjustment position detector 344 to perform micro alignment. To conform to

4D, the second assembly cell 420 deviates from the fixed cell 320 so that the sealant 440 around the first assembly cell 412 contacts the second assembly cell 420. When the sealant curing procedure (eg, ultraviolet curing procedure) passes, the first assembly cell 412 and the second assembly cell 420 may be adhered to each other.

Next, referring to FIG. 4E, a plurality of liquid crystal display panels 400 may be formed by cutting the first substrate 410.

It should be noted that the main feature of the method of assembling the liquid crystal display panel of the present invention is that it is assembled with a plurality of first assemblies on the first substrate at the same time by using a plurality of second assemblies which have already been cut. The assembly is not limited to proceeding with the assembly of the liquid crystal display panel. Any other suitable assembling apparatus may also be applied to the liquid crystal display assembling method of the present invention. In addition, in the above-described embodiment, first, after the injection of the liquid crystal, the first substrate is cut to form a plurality of liquid crystal display panels, but the first substrate is cut to form each display panel region, and then the liquid crystal is evacuated using vacuum suction method. It is also possible to form each liquid crystal display panel by charging.

As described above, the method and the assembly apparatus of the liquid crystal display panel according to the present invention are assembled with a plurality of first assembly cells on the first substrate at the same time by using a plurality of second assemblies that have already been cut. Have

1. The present invention assembles a second assembly cell and a plurality of first assemblies on the first substrate at the same time, compared to the conventional method of assembling a second assembly cell and a first assembly cell that have already been cut. You can save time and further increase the productivity of your product. In addition, it has relatively superior assembly accuracy than the conventional method of first assembling two substrates and then cutting them into a plurality of liquid crystal display panels.

2. The present invention is to assemble a second assembly cell and a plurality of first assembly cells on the first substrate, so that if a defective state of any second assembly cell is found before assembly, a new or steady state second assembly is immediately obtained. The cell may be assembled after replacing the cell, and there is an advantage in that it is not necessary to configure a liquid crystal display panel to be disposed at the expense of one first assembly cell as in the conventional technology.

3. If the present invention finds a defective state of any first assembly cell before assembling, the present invention can withhold it and save the second assembly cell in a steady state. There is an advantage in that the steady state second assembly cell and the defective first assembly cell do not need to be joined to each other. The defective first assembly cell is discarded after the first substrate is cut.

Although the present invention has been described in the above as a comparatively good embodiment, it is not limited to the present invention, and any person skilled in the art who knows the art may make certain changes and varnishes without departing from the technical scope of the present invention. (潤飾) can be. Therefore, the scope of the present invention is not limited to the contents set forth in the claims below, it is obvious that it is also within the scope of the present invention to apply the appropriate modification of the embodiments based on the technical spirit described in the claims below. Will do.

Claims (26)

Providing a first substrate on which a plurality of first assemblies are formed; Providing a plurality of second assemblies already cut; And assembling the second assembly cell and the first assembly cell on the first substrate. The method of claim 1, wherein after performing the procedure of providing the already cut second assembly cell and before performing the procedure of joining the second assembly cell and the first assembly cell, And assembling a liquid crystal layer between the first assembly cell and the second assembly cell, respectively. The method of claim 1, wherein after performing the procedure of bonding the second assembly cell and the first assembly cell on the first substrate, And forming a plurality of liquid crystal display panels by cutting the first substrate. The method of claim 1, wherein the first assembly cell on the first substrate, Assembly method of a liquid crystal display panel, characterized in that the plurality of thin film transistor array (Thin Film Transistor Array) cells. The method of claim 4, wherein the second assembly cell, A plurality of color filter array cells, wherein the assembling method of a liquid crystal display panel. The method of claim 1, wherein the first assembly cell on the first substrate, A plurality of color filter array cells, the method of assembling a liquid crystal display panel. The method of claim 6, wherein the second assembly cell, Assembly method of a liquid crystal display panel, characterized in that the plurality of thin film transistor array cells. The method of claim 1, wherein the second assembly cell and the first assembly cell on the first substrate are simultaneously bonded to each other. A method for assembling a liquid crystal display panel, wherein the ultraviolet light sealant is used to bond both of them. In the assembling apparatus of a liquid crystal display panel used for assembling a plurality of first assemblies of a first substrate and a plurality of already cut second assemblies, One fixing device used to fix the first substrate to an upper portion of the assembling device of the liquid crystal display panel; A plurality of fixing cells used to fix a second assembly cell to an upper portion of the assembly apparatus of the liquid crystal display panel; A plurality of moving devices disposed in the fixed cells; And a plurality of position detection devices installed on each of the fixed cells. The method according to claim 9, wherein each moving device, A first moving device used to move the position of the fixed cell in the X direction; A second moving device used to move the position of the fixed cell in the Y direction; And a third moving device used to move the Z-direction position of the fixed cell. The assembling apparatus of the liquid crystal display panel according to claim 9, And at least one rotating device, wherein each of the rotating devices is used to rotate the fixed cell. The method according to claim 9, wherein each position detection device, A device for assembling a liquid crystal display panel comprising a plurality of coarse adjustment position detectors and a plurality of fine adjustment position detectors. The method according to claim 12, wherein the coarse adjustment position detector, Assembly apparatus of a liquid crystal display panel, characterized in that the charge coupled device (Charged Couple Device). The method of claim 12, wherein the fine adjustment position detector, Assembly device for a liquid crystal display panel, characterized in that the charge coupled device. The method according to claim 14, wherein the coarse adjustment position detector, Assembling apparatuses for the liquid crystal display panel, characterized in that the fixing cells are installed near two corners facing each other. The method of claim 9, wherein the fixing device, Assembly apparatus for a liquid crystal display panel, characterized in that the electrostatic adsorption fixing device. The method of claim 9, wherein the fixed cell, An assembly device of a liquid crystal display panel, characterized in that the electrostatic adsorption fixture. In a method of assembling a liquid crystal display panel by using an assembling apparatus of a liquid crystal display panel comprising a fixing device, a plurality of fixing cells, a plurality of moving devices and a plurality of position detecting devices. , Providing a first substrate, wherein a plurality of first assemblies are already formed on the first substrate, and the first substrate is fixed on the fixing device; Providing a plurality of second assemblies which have already been cut, wherein each second assembly cell is fixed to each of the fixed cells; Moving the fixed cell by using the moving device and causing the first assembly cell and the second assembly cell to correspond to each other by using the position detecting device; And driving the mobile device to bond the second assembly cell and the first assembly cell on the first substrate to each other. The method of claim 18, wherein after performing the procedure of providing the already cut second assembly cell and before performing the procedure of joining the second assembly cell and the first assembly cell, And assembling a liquid crystal layer between the first assembly cell and the second assembly cell, respectively. The method of claim 18, wherein after the bonding of the second assembly cell and the first assembly cell on the first substrate, And a plurality of liquid crystal display panels including a cutting procedure for the first substrate. The procedure of claim 18, wherein the fixed cell is moved using the moving device and the first assembly cell and the second assembly cell correspond to each other using the position detecting device. And after the coarse adjustment for the mobile device is carried out again, the fine tuning for the mobile device. The method of claim 18, wherein the first assembly cell on the first substrate, Assembly method of a liquid crystal display panel, characterized in that the plurality of thin film transistor array cells. The method of claim 22, wherein the second assembly cell, A plurality of color filter array cells, the assembling method of a liquid crystal display panel. The method of claim 18, wherein the first assembly cell on the first substrate, A plurality of color filter array cells, the method of assembling a liquid crystal display panel. The method of claim 24, wherein the second assembly cell, Assembly method of a liquid crystal display panel, characterized in that the plurality of thin film transistor array cells. The method of claim 18, wherein the procedure of simultaneously bonding the second assembly cell and the first assembly cell on the first substrate comprises: A method for assembling a liquid crystal display panel, wherein the ultraviolet light sealant is used to bond both of them.

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