JP4471821B2 - LCD TV manufacturing method - Google Patents

Description

  The present invention relates to a method of manufacturing a liquid crystal television that uses a liquid crystal panel for image display, and in particular, in the middle of the manufacturing process, the time required for the aging process performed to stabilize the characteristics of the liquid crystal and the drive circuit. The present invention relates to a liquid crystal television manufacturing method capable of reducing productivity and improving productivity.

In a liquid crystal television having a liquid crystal panel as an image display unit, a driver is connected to a source line and a gate line provided at the periphery of the liquid crystal panel to form a liquid crystal drive circuit, and a bezel (frame body) is attached to install a liquid crystal module. Next, a backlight unit is assembled on one side of the liquid crystal module to create a liquid crystal unit. Next, a tuner circuit is mounted on the liquid crystal unit to create a television module. It is manufactured through a series of processes for assembling a television circuit board on which the circuit parts are mounted and assembling exterior parts such as cabinets and speakers.

In the manufacture of such a liquid crystal television, in order to stabilize the characteristics of the liquid crystal sealed in the liquid crystal panel and the driving circuit of the liquid crystal , the television module is targeted and the television module is predetermined at a predetermined high temperature. Aging processing that exposes to time is performed, and circuit components that are assembled in the final process are also subjected to the same aging processing to stabilize operating characteristics. In the final process to prevent quality stability and market defects, aging processing is performed at room temperature or high temperature as a reliability test for circuit components to be assembled in order to stabilize the operation characteristics. For example, see Patent Documents 1, 2, and 3).
Japanese Patent Laid-Open No. 11-212082 WO98 / 36312 pamphlet Japanese Patent Laid-Open No. 10-56627

  However, in the aging process performed as described above, it is necessary to introduce an object into the inside of an aging tank in which temperature and humidity are properly controlled, and to leave it in an operating state for a long time. A two-stage aging process performed using modules and circuit components as objects becomes a bottleneck in the above-described manufacturing process, which hinders improvement in productivity.

  In the aging process for circuit parts, these circuit parts are attached to an aging jig in order to put them in an operating state, and are introduced into the aging tank together with the jig. Before and after the aging process, the aging process is performed. Therefore, it is necessary to attach and detach circuit components to and from the jig for use, and the productivity is reduced due to the labor of attaching and detaching.

  The present invention has been made in view of such circumstances, and relates to a method of manufacturing a liquid crystal television that can reduce the time required for the aging process required in the manufacturing process of the liquid crystal television and improve productivity.

A method for manufacturing a liquid crystal television according to the present invention includes a driver connected to a peripheral portion of a liquid crystal panel in which liquid crystal is sealed, a liquid crystal module formed by forming a liquid crystal drive circuit, and a backlight unit attached to the liquid crystal module. the assembly, to create a TV module implements a tuner, a method for manufacturing a liquid crystal TV assembled circuit components that constitute the TV circuit to the TV module, to stabilize the characteristics of the liquid crystal and the driving circuit Therefore, the aging process for exposing the television module to a predetermined temperature for a predetermined time is performed together with the aging process for the circuit component after the circuit component is assembled.

  In the present invention, the aging processing performed to stabilize the characteristics of the liquid crystal and the driving circuit is performed on the television module. After the circuit components constituting the television circuit are assembled to the television module, the aging of these circuit components is performed. This is implemented in a batch with the process, eliminating the need for a two-stage aging process, and eliminating the need for attaching / detaching circuit components to / from an aging jig, thereby improving productivity.

  Further, the liquid crystal television manufacturing method according to the present invention is characterized in that the aging treatment is performed by exposing the assembly part of the circuit component to a temperature lower than that of the liquid crystal panel.

  In the present invention, when the aging process is performed on the television module and the circuit components in a lump, the circuit component assembly part is kept at a lower temperature than the liquid crystal panel assembly part and may occur at a high temperature. Prevent damage to circuit components.

  In the liquid crystal television manufacturing method according to the present invention, the aging process required in the liquid crystal television manufacturing process is completed in one step, and it is not necessary to attach or detach circuit components to the aging jig, resulting in significant productivity. An improvement can be achieved.

  Furthermore, since the assembly part of the circuit component is set to a temperature lower than the assembly part of the liquid crystal panel, the circuit component is prevented from being damaged at a high temperature necessary for stabilizing the characteristics of the liquid crystal. The present invention has an excellent effect, for example, it is possible to satisfactorily perform the aging process on the above.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a front view schematically showing the entire configuration of a liquid crystal television manufacturing factory where a liquid crystal television manufacturing method according to the present invention (hereinafter referred to as the present invention method) is carried out, and FIG. 2 is a plan view of the same.

  The liquid crystal television manufacturing factory shown in the figure is divided into a first building (LCD building 1) and a second building (TV building 2) that are arranged in close proximity, and these are connected by an original plate carry-in path 3. . As shown in FIG. 2, a distribution warehouse 4 is provided between the LCD building 1 and the TV building 2, and is connected to the TV building 2 through a product carry-out path 5. Note that the sizes of the LCD building 1, the TV building 2, and the distribution warehouse shown in FIGS. 1 and 2 do not represent actual sizes.

  The LCD building 1 is a building for manufacturing a liquid crystal panel original plate as a basic part by applying a series of processing processes to a glass substrate as a raw material original plate, and using two glass substrates (mother glass) of approximately the same size. First, a liquid crystal driving element such as a TFT (Thin Film Transistor) is formed in an array on one surface of one glass substrate, and a common electrode (ITO) and an alignment film are formed on this formation region, while the other A color filter is formed on one surface of the glass substrate so as to correspond to each liquid crystal driving element, and a common electrode (ITO) and an alignment film are formed on the formation region via a protective film, thereby driving elements. An array substrate including an array and a color filter substrate (CF substrate) including a color filter are formed.

  The drive element array and the color filter are respectively provided in a plurality of formation areas set on the surface of each glass substrate. FIG. 3 is an explanatory diagram of the manufacturing process of the liquid crystal panel original plate. In the array substrate shown in FIG. 3 (a), drive element arrays 11, 11,... Are arranged along two sides of each of four formation regions set by dividing the surface of the glass substrate 10. Are provided together with the lines 12, 12... And the gate lines 13, 13. Similarly, the CF substrate is provided with color filters 15, 15... Corresponding to the drive element arrays 11, 11... In the array substrate in each of the four formation areas set by dividing the surface of the glass substrate 14. It has been.

  Next, as shown in FIG. 3 (b), a sealing agent is applied on the surface of the array substrate so as to surround each of the formation regions of the drive element arrays 11, 11,. The CF substrate is positioned on the array substrate so that the formation region of the drive element arrays 11, 11,... Faces the formation region of the color filters 15, 15,. As a result, a sealing space is formed between the array substrate and the CF substrate, which is surrounded by the seal edges 16, 16,... A liquid crystal panel original plate 18 having four liquid crystal panel areas 17, 17,... Is sealed as shown in FIG.

  The liquid crystal may be sealed before or after the array substrate and the CF substrate are bonded to each other. The sealed liquid crystal is composed of the drive element arrays 11, 11... And the color filters 15, 15. They are arranged in a certain direction by the action of the alignment film covering the formation area. The sealing edges 16, 16... That form the sealed space contain conductive particles, and these sealing edges 16, 16... Act as an adhesive between the array substrate and the CF substrate. At the same time, it also acts as a lead-out line for drawing out the drive lines of the color filters 15, 15... On the CF substrate side to the array substrate side.

  The LCD building 1 is divided into a plurality of floors, and a glass substrate (mother glass is once pulled up to the top floor as indicated by an arrow in FIG. 1, and the glass substrate is first cleaned, The fabrication of the array substrate and the fabrication of the CF substrate described above are performed in parallel, and the liquid crystal panel original plate 18 is manufactured through the above-described series of processes that proceed while sequentially transporting them toward the lower layer. The liquid crystal panel original plate 18 is primarily divided into a predetermined size, and is carried into the TV building 2 through the original plate carry-in path 3 provided in the lower layer.

  The original plate carry-in path 3 communicates with only a part of the LCD building 1 and the TV building 2, and the liquid crystal panel original plate 18 is transported in the original plate carry-in path 3 in a state where it is placed on a dedicated transport tray, for example. Done without packing. As a result, the liquid crystal panel master 18 manufactured in the LCD building 1 can be carried into the TV building 2 while maintaining the same cleanliness as when manufactured, and the occurrence of transportation accidents such as damage and contamination is almost complete. Can be prevented.

  The primary division that is the final process inside the LCD building 1 is performed in order to reduce the object to be carried into the TV building 2 and to reduce the size of the original plate carrying-in path 3, and as described above, the four liquid crystal panels In the case of the liquid crystal panel original plate 18 manufactured with the regions 17, 17..., As shown by a two-dot chain line in FIG. This is done so that areas 17 and 17 remain.

  This primary division may be performed so that the four liquid crystal panel areas 17, 17... Are separated one by one, but the liquid crystal panel original plate 18 manufactured in the LCD building 1 is the size of the liquid crystal panel to be finally obtained. Depending on the situation, there may be six, eight, or even more liquid crystal panel areas 17, 17 ..., and when all of these are separated for each liquid crystal panel area 17, 17 ..., There is a problem that the sizes of the objects to be conveyed in the original plate carry-in path 3 are diversified, and the conveyance system is complicated, for example, the number of types of conveyance trays is increased. By carrying out the primary division by limiting the number of divisions by the above-described two divisions or the like, the conveyance object can be miniaturized while avoiding the diversification of the sizes.

  The product carry-out path 5 is arranged in parallel with the original plate carry-in path 3 from the TV building 2 side, and is changed in the middle part to be communicated with the distribution warehouse 4. The product carry-out path 5 is provided to carry out products (final products and intermediate products) shipped from the TV building 2 as will be described later, and the carried-out products are temporarily stored in the distribution warehouse 4. The parallel arrangement of the original plate carry-in path 3 and the product carry-out path 5 is a parallel arrangement as a structure in which the internal communication is blocked, and the inside of the original plate carry-in path 3 due to the influence of the product conveyed in the product carry-out path 5 It is intended to prevent a decrease in cleanliness.

  In the TV building 2, a series of assembly processes are performed on the liquid crystal panel original plate 18 carried in from the LCD building 1 through the original plate carry-in path 3, and a liquid crystal television as a final product is manufactured. This assembly process includes a first process for manufacturing a liquid crystal panel from the liquid crystal panel original plate 18, a second process for manufacturing a liquid crystal module using a liquid crystal panel that is a product of the first process, and a liquid crystal module that is a product of the second process. A third process for manufacturing a liquid crystal unit using a liquid crystal unit, a fourth process for manufacturing a TV module using a liquid crystal unit which is a product of the third process, and a TV module which is a product of the fourth process, The liquid crystal television is manufactured in the fifth process. Each of these processes involves the shipment of an intermediate product (liquid crystal panel, liquid crystal module, liquid crystal unit, television module) obtained at each terminal and a final product (liquid crystal television). It is possible.

  As shown in FIG. 1, the inside of the TV building 2 is divided into five layers. The original board carry-in path 3 is connected to the second floor of the TV building 2 and is extended to the fifth floor which is the top floor. The liquid crystal panel original board 18 to be carried in is temporarily 5 as shown by an arrow in FIG. The liquid crystal television is manufactured through the first to fifth processes that are performed while being raised to the floor and conveyed toward the lower level. By dividing the inside of the TV building 2 in this way, it becomes easy to cope with the environmental cleanliness required for each of the first to fifth processes carried out at each level as described later. There is an effect that the inter-layer conveyance of the article whose weight increases with progress becomes easy.

  On the first floor of the TV building 2, the TV circuit board used for the fifth process is mounted, and products (intermediate products and final products) generated in each of the first to fifth processes are packed as described later. . In mounting a television circuit board, many circuit components are used, and high positioning accuracy is required for soldering these circuit components. This mounting is performed on the 1st floor because the contact with the outside at the time of loading circuit components is completed on the 1st floor, and the influence on the environmental cleanliness required for each process performed in the upper hierarchy is minimized. This is to keep the influence of the floor vibration on the positioning accuracy of the circuit components to a small extent while maintaining the position.

  The packaging of products generated in the 1st to 5th processes is performed on the first floor, the necessary temperature inspection is performed at the same time before packing, and the dust generated during the packaging is stopped on the first floor. This is to eliminate the influence on the environmental cleanliness required for each process performed in the above. In addition, the externally procured parts used in each process of the upper hierarchy are also accepted on the first floor, and these parts are carried into the hierarchy that needs each.

  FIG. 4 is an explanatory diagram of a process layout common to each level from the 2nd floor to the 5th floor of the TV building 2, and a plan view of each level is shown. As shown in the figure, each level is provided with a carry-in unit 20, a stock unit 21, a production line 22, and an inspection unit 23 from one side (incoming side) to the other side (outside). On the exit side, a carry-out unit 24 for carrying out to a lower layer and a shipment unit 25 for carrying out shipment to the outside are arranged in parallel. Note that the carry-out unit 24 does not exist on the second floor where the liquid crystal television as the final product is manufactured by the fifth process, and only the shipping unit 25 is provided.

  In the carry-in unit 20, products of the previous process carried in from the respective upper layers are accepted, and externally procured parts used in the respective processes are carried in from the first floor. In the carry-in section 20 on the fifth floor, the liquid crystal panel original plate 18 carried in from the original board carry-in path 3 is received, and in the carry-in section 20 on the second floor, along with the carry-in products from the third floor, which is the upper hierarchy, As described above, the television circuit board that has been mounted on the first floor is accepted.

  The articles received in the carry-in section 20 are temporarily stored in the stock section 21 in which a predetermined storage space is secured for each article, and are paid out in response to a request from the production line 22. The stock unit 21 serves as a buffer between processes, and by providing the stock unit 21, the effects of line accidents that may occur in the previous process on the subsequent process are minimized, Stagnation of production in the TV building 2 can be prevented.

  In the production line 22, each assembly process as described later is performed by using the articles delivered from the upper layer or the LCD building 1 delivered from the stock unit 21 and the parts brought in from the first floor. The products manufactured in this manner for each level are distributed to the unloading unit 24 and the shipping unit 25 on the 3rd to 5th floors after the inspection described later in the inspection unit 23, and the shipping unit on the 2nd floor. Sent to 25.

  The carry-out unit 24 is a conveying means that carries out the operation of carrying out the product that has been inspected by the inspection unit 23 to the lower layer and delivering it to the carry-in unit 20 in the lower layer. The carry-out unit 24 and the carry-in unit 20 As shown by arrows in FIG. 1, the conveyance is performed using the vicinity of the ceiling of each level so as not to hinder the process layout of each level.

  The shipping unit 25 is a transport unit that transports the products (intermediate products and final products) of each level that have been inspected by the inspection unit 23 to the first floor for packing. In addition, as shown by an arrow in FIG. 1, the product that has been packed on the first floor is once returned to the second floor and delivered to the product carry-out path 5, and then passed through the product carry-out path 5 to the distribution warehouse 4. Be transported.

  The distribution warehouse 4 is an automatic warehouse in which a predetermined storage space is secured for each intermediate product and final product manufactured on each floor, and products sent from the product carry-out path 5 to the distribution warehouse 4 are stored in their respective storage spaces. Are temporarily stored, and paid out according to a shipping plan based on an order from outside and shipped outside the factory. The installation of such a distribution warehouse 4 enables efficient storage of intermediate products and final products, and facilitates inventory management and delivery management. Furthermore, the storage and shipping status of the distribution warehouse 4 can be changed to the TV building. 2 and LCD building 1 can be used as feedback information for the construction and correction of production plans, and an efficient production system can be established.

  Next, the first to fifth processes performed in the production lines 22 on the second to fifth floors will be described in the order of progress. In the production line 22 on the fifth floor, a first process for manufacturing a liquid crystal panel using the liquid crystal panel original 18 carried in from the LCD building 1 is performed. FIG. 5 is an explanatory diagram of the manufacturing process of the liquid crystal panel.

  As shown in FIG. 5 (a), the liquid crystal panel master 18 carried in from the LCD building 1 has a plurality (two in the figure) of liquid crystal panel areas 17, 17,. In one process, first, a secondary division is performed to separate the liquid crystal panel original plate 18 for each liquid crystal panel region 17, 17,. Next, as shown in FIG. 5 (b), the divided liquid crystal panel original plate 18a is washed, and finally, as shown in FIG. 5 (c), optical sheets 18b and 18b are covered on both surfaces of the cleaned panel original plate 18a. As shown in FIG. 5D, a liquid crystal panel 19 is manufactured.

  The optical sheets 18b and 18b are formed by selecting and laminating sheets having various optical functions such as a polarizing sheet, a field-of-view expansion sheet, an antireflection sheet, and the like according to applications. These optical sheets 18b , 18b is followed by an autoclave treatment in which evacuation is performed at a high temperature in order to suck and remove bubbles remaining on the sticking surface.

  The thus manufactured liquid crystal panel 19 is subjected to an SL inspection in which the optical sheet 18b, 18b is visually inspected in the inspection unit 23, and then carried out to the fourth floor by the carry-out unit 24 as described above. Or, it is shipped as an intermediate product through the shipping section 25. Note that the liquid crystal panel 19 to be shipped is subjected to an aging process in which the liquid crystal panel 19 is exposed to a high temperature for a predetermined time after the autoclave process to stabilize the liquid crystal characteristics. The liquid crystal panel 19 is shipped to a manufacturing factory of a liquid crystal module, a liquid crystal unit or a television module, and various devices on which these are mounted, and also to other factories that manufacture liquid crystal televisions.

  In the production line 22 on the fourth floor, a second process for manufacturing a liquid crystal module using the liquid crystal panel 19 carried in from the fifth floor is performed. In this second process, first, terminal exposure and chamfering are performed. FIG. 6 is an explanatory view of the terminal exposure and chamfering process, and is a cross-sectional view showing an enlarged peripheral portion of the liquid crystal panel 19.

  The liquid crystal panel 19 faces the array substrate 19a on which the drive element array 11 is formed and the CF substrate 19b on which the color filter 15 is formed, and seals the liquid crystal 19c in the sealing space by the seal edge 16, The configuration is as shown in FIG. The array substrate 19a is provided with a source line 12 (and a gate line 13) located outside the seal edge 16 and connected to the drive element array 11, and the terminal exposure in the second process is the same as that of the CF substrate 19b. The peripheral portion is cut out over a predetermined width outside the seal edge 16 to expose the source line 12 (or the gate line 13). FIG. 6B shows a state after the terminal exposure, and a portion indicated by a two-dot chain line in the drawing is cut off.

The chamfer, the edge of the CF substrate 19b excised for terminals exposed, with the edge of the array substrate 19a, a process of chamfering as shown in FIG. 6 (b), the liquid crystal panel 19 in a subsequent process In order to prevent the occurrence of defects such as chipping and cracking during handling, this is performed by polishing or heating.

After such terminal exposure and chamfering, a driver (source driver and gate driver) is mounted on the source line 12 and the gate line 13 exposed as described above, and a liquid crystal drive circuit is configured . A liquid crystal module is manufactured by assembling a bezel to protect the mounting portion.

  As is well known, the driver is mounted by connecting a driver IC supplied as a TCP (Tape Career Package) to the source line 12 and the gate line 13 by a TAB (Tape Autometed Bonding) method, or the driver IC is an array substrate. 11 is implemented by COG (Chip On Glass) mounting that is mounted on 11 and directly connected to the source line 12 and the gate line 13. The bezel is a frame for protecting the mounting portion of the driver. At this time, the liquid crystal control board is also assembled.

  The liquid crystal module manufactured in this way is subjected to an operation test for confirming the quality of the operation state in the subsequent inspection unit 23, and then carried out to the third floor by the carry-out unit 24 or the shipping unit 25 as described above. After that, it is shipped as an intermediate product. An aging process is performed on the shipped liquid crystal module to stabilize the characteristics of the liquid crystal and the drive circuit. The liquid crystal module is shipped to a manufacturing factory of a liquid crystal unit or a television module and various devices in which these are mounted, and also to other factories that manufacture liquid crystal televisions.

  In the production line 22 on the third floor, a third process for manufacturing a liquid crystal unit using the liquid crystal module carried in from the fourth floor, and a fourth process for manufacturing a television module using the liquid crystal unit manufactured in the third process. Is implemented.

  The liquid crystal unit is manufactured by assembling the backlight unit to the liquid crystal module manufactured in the second process. The backlight unit includes a light source such as a cold cathode fluorescent tube, a light guide plate that equalizes and emits light emitted from the light source over the entire surface, and an optical sheet (light diffusion sheet, prism) that is attached to the output surface of the light guide plate. Sheet) and the like, and the liquid crystal panel is irradiated with light from the array substrate side, so that the display image on the liquid crystal panel is visible. The third process may include an assembly process of such a backlight unit.

  A part of the liquid crystal unit manufactured in this way is sent to the subsequent inspection unit 23 without going through the fourth process, and after operation and appearance inspection are performed, it is shipped as an intermediate product through the shipping unit 25. For the liquid crystal unit to be shipped, an aging process for stabilizing the characteristics of the liquid crystal and the drive circuit is performed before the operation and the appearance inspection are performed. The liquid crystal module is shipped to various factories that use the liquid crystal unit as display means, and also to other factories that manufacture liquid crystal televisions.

  The television module is manufactured by mounting a tuner and a control board on a liquid crystal unit manufactured in the third process. A part of the TV module manufactured in this way is subjected to operation and appearance inspection in the subsequent inspection unit 23 and then carried out to the second floor by the carry-out unit 24 or shipped as an intermediate product through the shipment unit 25. The For the liquid crystal unit to be shipped, an aging process for stabilizing the characteristics of the liquid crystal and the drive circuit is performed before the operation and the appearance inspection are performed. This television module is shipped to other factories that manufacture liquid crystal televisions.

  In the production floor 22 on the second floor, the TV module carried in from the third floor is assembled with the circuit components for the television circuit carried in from the first floor, in order to stabilize the characteristics of all circuits and liquid crystals. After the final aging process is performed, a liquid crystal television is manufactured by assembling exterior parts such as speakers and cabinets carried in from the first floor. The circuit components are components for various processing circuits necessary for operation as a television, such as a processing circuit for a video signal and an audio signal given from a tuner, and a remote control circuit for receiving an operation signal given from a remote controller for operation. As described above, in the mounting process on the first floor, it is mounted on one or a plurality of television circuit boards and carried into the second floor where the fifth process is performed.

  The liquid crystal television manufactured in this way is subjected to a final inspection in the subsequent inspection unit 23, and then shipped as a final product through the shipping unit 25. The final inspection includes electrical adjustment, operation, and appearance inspection, and the operation inspection is performed under various environments assumed in use conditions such as temperature, humidity, vibration, etc., to improve reliability. .

  FIG. 7 is an explanatory diagram of the aging process performed in the fifth process. In the figure, reference numeral 6 denotes a television module carried in from the third floor, which is constructed by assembling a bezel 61 around the liquid crystal panel 60, assembling a backlight unit as described above, and mounting a tuner. The television module 6 is assembled with a plurality of television circuit boards 62, 62,... Each mounted with circuit components in the production line 22 on the second floor, and is introduced into the aging tank 7 in this state.

The aging tank 7 is a temperature processing tank having an internal environment controlled to a predetermined temperature and humidity. The TV module 6 introduced into the aging tank 7 operates the liquid crystal panel 60 and the TV circuit boards 62, 62. In the meantime, an aging process for stabilizing the characteristics of the liquid crystal sealed in the liquid crystal panel 60, the driving circuit of the liquid crystal , and the tuner circuit is performed. The process is completed together with the aging process for the circuit components mounted on the board.

  As described above, in the TV building 2 in which the method of the present invention is implemented, liquid crystal panels, liquid crystal modules, liquid crystal units, and television modules that are not shipped as intermediate products are delivered to lower layers without being subjected to aging processing in the respective layers. On the second floor, the television circuit boards 62, 62,... Are assembled to the television module 6 and then introduced into the aging tank 7, and the aging process is performed together with the circuit components mounted on the television circuit boards 62, 62,. . As a result, the aging process that is performed only on the liquid crystal and the drive circuit as in the prior art can be omitted, the time required for this can be reduced, and an improvement in productivity is achieved.

  In addition, since the aging process of the circuit parts is performed in the assembled state to the TV module 6, it is not necessary to attach or detach the jig to the aging, and the labor required for the attachment or detachment is reduced, so that further productivity is achieved. Improvement can be achieved.

  Note that the temperature at the time of the aging process performed on the television module 6 to stabilize the characteristics of the liquid crystal and the drive circuit is higher than the temperature at the time of the aging process on the circuit components, and the case where the simultaneous aging as described above is performed. Some circuit components may be damaged when exposed to high temperatures. Although this damage can be eliminated by using circuit components that can withstand high temperatures, more preferably, the mounting portions of the television circuit boards 62, 62,... This problem can be solved by exposing the assembly part to a temperature lower than that of the periphery of the liquid crystal panel 60.

  The local cooling of the mounting portions of the television circuit boards 62, 62... Can be achieved, for example, by dividing the region inside the aging tank 7, and the television module 6 before being introduced into the aging tank 7 can be It can be achieved by appropriate means such as covering only the mounting portions of the circuit boards 62, 62... And mounting a cooling jacket that performs a weak cooling action.

It is a front view which shows typically the whole structure of the manufacturing factory of the liquid crystal television in which this invention method is implemented. It is a top view which shows typically the whole structure of the manufacturing factory of the liquid crystal television in which this invention method is implemented. It is explanatory drawing of the manufacturing process of a liquid crystal panel original plate. It is explanatory drawing of the process layout common to each hierarchy from the 2nd floor of the TV building to the 5th floor. It is explanatory drawing of the manufacturing process of a liquid crystal panel. It is explanatory drawing of a terminal exposure and a chamfering process. It is explanatory drawing of the aging process performed in a 5th process.

Explanation of symbols

1 LCD ridge 2 TV ridge 3 Master plate carry-in path 4 Logistics warehouse 5 Product carry-out path 6 TV module 7 Aging tank
60 LCD panel
62 TV circuit board

Claims (2)

A driver is connected to the peripheral portion of the liquid crystal panel sealed with liquid crystal, a liquid crystal module is formed by configuring the liquid crystal drive circuit, a backlight unit is assembled to the liquid crystal module , a tuner is mounted, and a television module is mounted. create and a method for manufacturing a liquid crystal TV assembled circuit components that constitute the TV circuit to the TV module
In order to stabilize the characteristics of the liquid crystal and the driving circuit, an aging process in which the television module is exposed to a predetermined temperature for a predetermined time is performed together with an aging process on the circuit part after the circuit part is assembled. A method for manufacturing a liquid crystal television.   2. The method of manufacturing a liquid crystal television according to claim 1, wherein the aging process is performed by exposing an assembly part of the circuit component to a temperature lower than that of the liquid crystal panel.

Images