JP2007017480A - Manufacturing method of liquid crystal display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a thin display panel structure which can be manufactured with reduced man-hours and component cost by reducing components of a liquid crystal panel and simplifying the assembly work. <P>SOLUTION: The manufacturing method of a thin display panel structure includes: a process to arrange a front cabinet body; a process to mount a shield frame on the front cabinet body; a process to mount a bezelless liquid crystal substrate on the shield frame; a process to mount a fixing holder frame on the bezelless liquid crystal substrate; a process to arrange an optical sheet inside the fixing holder frame; a process to mount a lamp holder frame on the fixing holder frame; and a process to mount a backlight shield on the lamp holder frame. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a thin display panel structure.

  In recent years, production of thin display structures such as liquid crystal televisions has been actively conducted. As shown in FIG. 31, the assembly production of the liquid crystal television is performed through an assembly process of the liquid crystal panel, an assembly process of the backlight, and an attachment process of attaching these to the cabinet. Each of these steps was performed independently. For example, in the process of assembling the liquid crystal panel, the liquid crystal panel is produced as one independent completed part by attaching a reinforcing bracket such as a bezel to the outer periphery of the liquid crystal panel.

Thus, when producing a liquid crystal television, attachment work, such as a reinforcement member and a screw, is performed in each process. For this reason, the operation | work which attaches a reinforcement member with respect to each component takes extra, and there exists a problem that work efficiency falls or the extra cost of a reinforcement member part generate | occur | produces. As such a countermeasure, Patent Document 1 discloses that a reflector is sandwiched between a front cabinet and a rear cabinet, and positioning is performed through cylindrical engagement means provided on each of the reflector and the main substrate and the liquid crystal panel. An invention relating to an assembly structure of a liquid crystal television that can reduce the number of parts and improve the assembly workability by screwing together is disclosed. Patent Document 2 discloses an invention in which assemblability is improved by storing a polarizing plate having a side wall of a recess in a cabinet protruding so as to be coupled to the side wall.
Japanese Patent Laid-Open No. 5-103284 JP 2003-346536 A

  However, as in the prior art, simply connecting the front cabinet and the rear cabinet with screws using cylindrical engagement means or processing the polarizing plate can provide a sufficient cost reduction effect. There is a problem that it cannot be obtained. That is, the liquid crystal panel member has a problem that the cost of the frame material cannot be reduced because the liquid crystal substrate is surrounded by a frame material such as a reinforcing metal fitting. Further, since the assembly process of the liquid crystal panel and the process of attaching the liquid crystal panel to the cabinet are performed separately, there is a problem that a lot of man-hours are spent in the production of a liquid crystal television or the like.

  Therefore, the present invention has been made in view of such problems, and can reduce the number of work steps and the cost of members by reducing the number of members of the liquid crystal panel and simplifying the assembly work. An object of the present invention is to provide a method for manufacturing a thin display panel structure that can be used.

  Therefore, in the present invention, in order to solve such problems, a step of arranging the front cabinet body, a step of placing a shield frame separate from the bezelless liquid crystal substrate on the front cabinet body, and a bezelless liquid crystal on the shield frame A step of placing the substrate, a step of placing the fixed holder frame on the bezelless liquid crystal substrate, a step of placing the optical sheet in the fixed holder frame, a step of placing the lamp holder frame on the fixed holder frame, and a lamp And a step of placing a backlight shield on a holder frame.

  The thin display panel structure manufacturing method according to the present invention is an automated assembly process that uses a bezelless liquid crystal substrate to integrate all assembly processes without going through an assembly process of a liquid crystal panel for attaching a bezel member. Since this can be realized, the number of work steps can be reduced. In addition, since the reinforcing member can be omitted, the member cost can be reduced. For this reason, when manufacturing a thin display panel structure, a significant cost reduction effect can be obtained.

  Hereinafter, embodiments of each invention will be described. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention.

<< embodiment >>
<Overview of embodiment>
The present embodiment relates to a method for manufacturing a thin display panel structure using a bezelless liquid crystal substrate. FIG. 1 is an exploded perspective view for explaining a thin display panel structure. Each member can be automatically stacked, and the assembly operation of the thin display panel assembly can be completed by stacking the members in order from the top in order to integrate them. Therefore, a significant reduction in the number of assembly steps can be realized.

<Processing flow of the embodiment>
2 to 8 show an example of the flow of processing in the present embodiment. First, after explaining the outline of the flow of processing, each step will be explained.

  As shown in FIG. 2, the thin display panel assembly manufacturing method includes a step of arranging a front cabinet body (S0201), a step of placing a shield frame separate from the bezelless liquid crystal substrate on the front cabinet body (S0202), ,including. Further, in addition to the processing of FIG. 2, as shown in FIG. 3, a step (S0303) of placing a bezelless liquid crystal substrate on the shield frame may be included.

  As shown in FIG. 4, the method for manufacturing a thin display panel structure includes a step of placing a bezelless liquid crystal substrate (S0401) and a step of placing a fixed holder frame on the bezelless liquid crystal substrate (S0402). Good. The step of arranging the bezelless liquid crystal substrate (S0401) may be the same as the step (S0303) shown in FIG.

  Further, as shown in FIG. 5, the method for manufacturing a thin display panel structure may include a step of arranging a fixed holder frame (S0501) and a step of arranging an optical sheet in the fixed holder frame (S0502). . The step of arranging the fixed holder frame (S0501) may be the same as the step (S0402) shown in FIG.

  As shown in FIG. 6, the method for manufacturing a thin display panel structure includes a step of placing a fixed holder frame (S0601) and a step of placing the lamp holder frame on the fixed holder frame (S0602). May be. The step of arranging the fixing holder (S0601) may be the same as the step (S0501) shown in FIG. Further, an optical sheet may be disposed in the fixed holder frame in step (S0502) shown in FIG.

  As shown in FIG. 7, the method for manufacturing a thin display panel structure includes a step of placing a lamp holder frame (S0701) and a step of placing a backlight shield on the lamp holder frame (S0702). May be. The step of arranging the lamp holder frame (S0701) may be the same as the step (S0602) shown in FIG.

  Moreover, the manufacturing method of a thin display panel structure may be a combination of a plurality of steps shown in FIGS. 2 to 7. For example, as shown in FIG. 8, a step of placing a front cabinet body (S0801), a step of placing a shield frame on the front cabinet body (S0802), and a step of placing a bezelless liquid crystal substrate on the shield frame (S0803). ), Placing the fixed holder frame on the bezelless liquid crystal substrate (S0804), placing the optical sheet in the fixed holder frame (S0805), and placing the lamp holder frame on the fixed holder frame (S0806). And a step of placing the backlight shield on the lamp holder frame (S0807). FIG. 8 shows a flow of processing including all the steps shown in FIGS. 2 to 7, but may be a step in which some of these steps are omitted. Hereinafter, each process will be described based on the processing flow shown in FIG.

(Description of each process)
(Front cabinet body placement process)
First, the step (S0801) of arranging the front cabinet body will be described. The “front cabinet body” is a member constituting the front surface portion of the thin display panel structure. First, the shape of the front cabinet body will be described. FIG. 9 is a diagram illustrating an example of a front view of the front cabinet body. A display window (0902) for displaying liquid crystal is formed at the center of the front cabinet body. Further, the front cabinet body (0901) has a button hole (0903) for providing an operation button of the thin display panel structure in the lower front part. FIG. 10 is a view showing an example of a rear view of the front cabinet body (0901), and FIG. 11 is a view showing an example of a perspective view of the front cabinet body. The front cabinet body (0901) has a sound attachment part (0904) for attaching a speaker to the lower side of the display window (0902) symmetrically in addition to the button hole (0903) described above on the back surface. Yes. Further, the front cabinet body has a protruding joining means (0905), which is used when attaching a rear cabinet and a front cabinet body (not shown) at the final stage of the assembly process, below the display window (0902). Further, in the frame area adjacent to the display window (0902) on the back side of the front cabinet body (0901), female screws for joining to the four corners with male screws that pass through the backlight shield described later. A hole (0906) is provided protruding.

  Furthermore, the front cabinet body has a configuration for placing a shield frame, which will be described later, in the frame region, or a configuration for placing a liquid crystal driver board. Therefore, by arranging the front cabinet body, it is possible to restrict the position of each member placed by stacking from above. FIG. 12 is a partial perspective view for explaining an example of the shield frame placement portion showing the configuration for placing the shield frame. The front cabinet body (1201) has a shield frame placement portion indicated by diagonal lines. By having such a shield frame mounting portion, it is possible to easily realize the position restriction of the shield frames (1202) stacked in a later process. Specifically, all the shield frame mounting parts have a stepped portion that constitutes the same plane, and the shield frame position restriction is realized by vertically lowering the shield frame of the same size on the stepped portion. be able to. In addition, since the step portion is provided, even when the XY plane is shaken with respect to the shield frame mounting portion when the shield frame is mounted, the shield frame is fixedly mounted at an appropriate position. Therefore, position regulation can be realized. Thus, in the process of placing the shield frame on the front cabinet body, the shield frame can be arranged at an appropriate position of the front cabinet body only by stacking from above.

  The shield frame placement portion may be integrated with a support portion that supports the liquid crystal driver substrate, as indicated by shield frame placement portion B (1204). The example of FIG. 12 is an example in which the shield frame placement portion and the support portion are integrated (1204) and not integrated (1203). FIG. 13 is a partial perspective view illustrating an example of a front cabinet body including a support portion. As shown by the oblique lines in FIG. 13, the front cabinet body (1301) has, for example, a support portion (1302) that holds the liquid crystal driver board upright and supports it at the side of the liquid crystal driver board (not shown) in the frame region. It has. The “liquid crystal driver substrate” is a substrate having a driver circuit for driving the liquid crystal substrate. When the front cabinet body has a support part, it is possible to stack the liquid crystal driver boards from the top, and to place the fixed holder frame described later on the top so that the position of the liquid crystal driver board can be regulated. It becomes. Details will be described later.

  The front cabinet body may be made of a plastic material. This is because the front cabinet body is made of a plastic material, thereby preventing the temperature change from shrinking. Further, the front cabinet body may have a female screw hole as described above, and a shield stacked from above by fastening a male screw that penetrates the backlight shield described later into the female screw hole. An external force in the normal direction may be applied to the frame.

  In this way, the front cabinet body is configured to facilitate the positioning of each member, so the thin display panel assembly can be manufactured by stacking the members in order from the top cabinet body. can do.

(Shield frame placement process)
Next, in the step of placing the shield frame (S0802), a shield frame separate from the bezelless liquid crystal substrate is placed on the front cabinet body. The “front cabinet body” is the front cabinet body arranged in the front cabinet body arrangement step (S0801). The “shield frame” is used to prevent static electricity from entering the liquid crystal driver substrate or the liquid crystal substrate. The shield frame is made of a metal material. However, the shield frame may be configured by depositing a metal material on the surface of a non-metal material. First, the shape of the shield frame will be described. Fig.14 (a) is a figure which shows an example of the front view of a shield frame. FIG. 14B is a diagram illustrating an example of a rear view of the shield frame. FIGS. 15A and 15B are diagrams showing an example of a perspective view of the shield frame. As shown in these drawings, the shield frame is a frame-shaped body. The size of the outer shape of the shield frame is limited to a size larger than the frame shape of the display window of the front cabinet body described above and larger than the frame shape of a bezelless liquid crystal substrate described later. This is because the shield frame is placed in a frame area adjacent to the display window of the front cabinet body, and therefore cannot be placed by stacking from above unless it is relatively larger than the display window of the front cabinet body. . In addition, the shield frame needs to have a configuration in which the outer shape of the frame is larger than that of the bezelless liquid crystal substrate in order to restrict the position of the bezelless liquid crystal substrate within the frame as described later. Further, the shield frame is provided with engagement means (1401) configured to protrude from the frame at one corner. Such engagement means (1401) is a screw hole through which a male screw reaching through the backlight shield penetrates the female screw hole of the front cabinet body already described. Since the shield frame is provided with the engaging means (1401), the external force in the normal direction already described is applied to the bezelless liquid crystal substrate. Further, since the shield frame has unique engagement means (1401) only at one corner, the front, rear, left and right of the shield frame become clear. Therefore, when stacking from above, the shield frame can be installed and lowered in an appropriate direction.

  A “bezelless liquid crystal substrate” is a liquid crystal substrate from which a bezel member is excluded. A “bezel” is a frame frame that is conventionally attached to the outer periphery of a liquid crystal panel. Since the bezelless liquid crystal substrate does not use a bezel member on the outer periphery of the liquid crystal panel, the material cost of the bezel member can be reduced. Further, by not using the bezel, the work process for attaching the bezel to the conventional liquid crystal panel can be omitted. “Bezelless liquid crystal substrate and separate shield frame” indicate that the bezelless liquid crystal substrate and the shield frame are separate members. In other words, since the bezelless liquid crystal substrate and the shield frame are not directly joined and integrated using an engaging means or the like, it is not necessary to use a reinforcing member for attaching them. “Bezelless liquid crystal substrates” include, for example, glass substrates for sandwiching liquid crystals, transparent electrodes for driving liquid crystal molecules, alignment films for aligning liquid crystal molecules in a certain direction, liquid crystals, color filters, etc. Or one or more of them.

  The shield frame includes a portion used for positioning the bezelless liquid crystal substrate, for example. This will be described with reference to FIG. FIG. 16 is a diagram showing an example of a partial perspective view of the shield frame. The shield frame (1601) may have XY position regulating means (1602) for regulating the position of the bezelless liquid crystal substrate (1604) in the XY plane with respect to the shield frame (1601). This XY position restricting means (1602) is, for example, an elastic material bonded to the shield frame main body. The XY position restricting means has a rectangular parallelepiped shape, and the size in the Z direction is the same as the height of the shield frame. Since the shield frame (1601) has the XY position restricting means (1602), the position of the bezelless liquid crystal substrate can be restricted only by stacking the bezelless liquid crystal substrates from above the shield frame. For example, when the bezel-less liquid crystal substrate (1604) is lowered vertically from above the shield frame (1601), a subtle error has occurred and the bezel-less liquid crystal substrate (1604) cannot be placed at an appropriate position. In general, it is assumed that the bezel-less liquid crystal substrate is caught on the upper surface of any of the XY position regulating means (1602) included on the four sides of the shield frame. However, even in such a case, the force to place the bezel-less liquid crystal substrate in the shield frame works due to gravity, and the urging force works from the XY position restricting means that is an elastic material. The bezel-less liquid crystal substrate can be pushed into the shield frame, and as a result, the position can be regulated within the shield frame. Further, since the XY position restricting means (1602) is made of an elastic material, it can mitigate an impact when the bezelless liquid crystal substrates are stacked from above.

  Since the XY position restricting means (1602) is made of an elastic material, for example, even when the bezelless liquid crystal substrate expands in the XY direction due to thermal expansion after assembly, the XY position restricting means only slightly expands and contracts, so that a shield frame, etc. Can be less affected. Thus, in addition to the shielding effect, the shield frame has a position regulation function and a stress relaxation function to the bezelless liquid crystal substrate due to thermal expansion, and has a function different from that of the conventional bezel. When using a bezel-less liquid crystal substrate, countermeasures against static electricity and measures for position regulation are required, but countermeasures against static electricity are realized by using a shield frame, and by using XY position restriction means that the shield frame has. A position regulation measure can be realized. For this reason, it is possible to perform assembly work by stacking with an automatic machine or the like using a bezelless liquid crystal substrate, and the number of work steps can be reduced.

  Further, the shield frame (1601) may have a Z position regulating means (1603) for regulating the position of the bezelless liquid crystal substrate (1604) in the Z direction with respect to the shield frame. When the shield frame (1601) has the Z position regulating means (1603), the position of the bezelless liquid crystal substrate (1604) in the Z direction can be regulated. Therefore, the bezelless liquid crystal substrate can be positioned at an appropriate position according to the thickness of the liquid crystal substrate. The Z position restricting means (1603) is, for example, a frame-like elastic member disposed in a bezelless liquid crystal substrate facing region of the shield frame main body. Since the Z position restricting means (1603) is a frame-like elastic member, it can serve as a cushioning material using its four sides with respect to the contact surface of the bezelless liquid crystal substrate. Specifically, the shield frame is made of a metal material, and the bezelless liquid crystal substrates are arranged by stacking from above the shield frame. When stacking from above, it is possible to prevent scratches from coming into contact with the shield frame.

  Moreover, the shield frame may have a frame-like elastic body in a region in contact with the front cabinet body. FIG. 17 is a cross-sectional view including a shield frame. FIG. 17B shows a cross section of the AA ′ plane shown in FIG. As shown in FIG. 17 (b), the frame-like elastic body (1705) is provided in a region in contact with the front cabinet body (1706). Therefore, when the shield frame (1701) is stacked and placed on the shield frame placement portion (1707) of the front cabinet body (1706), the impact on the shield frame can be reduced. Further, as already described, the shield frame placement portion (1706) has a step portion. And the shield frame (1701) can comprise the shape suitable for the level | step-difference part by providing the frame-shaped elastic body (1705). Therefore, the position of the shield frame can be further regulated by stacking from above. In addition, when the second frame-shaped elastic member (1705) is disposed on all four sides of the shield frame, entry of dust such as dust into the bezelless liquid crystal substrate (1702) can be prevented. Further, by using the Z-position regulating means (1704) that is a frame-like elastic member and the frame-like elastic body (1705), a synergistic effect of preventing entry of dust can be enhanced.

  Thus, the shield frame has a configuration for placing itself on the front cabinet body and a configuration for placing the bezelless liquid crystal substrate from above the shield frame. Therefore, by stacking the shield frames from above the front cabinet body, the position of the shield frame can be regulated, and as a result, the position regulation of the front cabinet body and the bezelless liquid crystal substrate can also be made possible. . Therefore, it is possible to realize the placement of the bezelless liquid crystal substrate only by stacking from above in the step of placing the bezelless liquid crystal substrate described below.

(Bezelless LCD substrate mounting process)
In the step of placing the bezelless liquid crystal substrate (S0803), the bezelless liquid crystal substrate is placed on the shield frame. The “shield frame” is a shield frame placed in the above-described shield frame placement step (S0802). Since the shield frame includes each means for realizing position regulation by stacking the bezel-less liquid crystal substrates from above as described above, the bezel-less liquid crystal can be obtained only by stacking the bezel-less liquid crystal substrates from above the shield frame. The position of the substrate can be fixed. Since the bezel-less liquid crystal substrate is a liquid crystal substrate in which the bezel member is eliminated, a reinforcing member is not necessary, and the cost of member costs can be reduced. In addition, since the bezel member is abolished, a process of attaching the bezel member to the liquid crystal substrate using a reinforcing metal fitting is not necessary, so that the total number of work steps can be reduced.

(Fixed holder frame placement process)
In the step of placing the fixed holder frame (S0804), the fixed holder frame is placed on the bezelless liquid crystal substrate. The “bezelless liquid crystal substrate” refers to the bezelless liquid crystal substrate placed in the above-described bezelless liquid crystal substrate placement step (S0803). The “fixed holder frame” is used for fixing the bezelless liquid crystal substrate. First, the shape of the fixed holder frame will be described. FIG. 18A shows an example of a front view of the fixed holder frame, and FIG. 18B shows an example of a rear view of the fixed holder frame. FIGS. 19A and 19B show examples of perspective views of the fixed holder frame, respectively. As shown in these drawings, the fixed holder frame is of a frame-like body. The size of the frame portion of the fixed holder frame is relatively larger than the frame outer shape portion of the bezelless liquid crystal substrate described above. The fixed holder frame includes an optical sheet storage area, which will be described later, on the side opposite to the lamp holder frame. This optical sheet storage area is formed by forming a recess from the frame of the fixed holder frame toward the side facing the bezelless liquid crystal substrate, and is stepped with respect to the frame portion of the fixed holder frame facing the lamp holder frame. It is configured. The optical sheet storage area is configured so that the XY plane is uniform. Further, the fixed holder frame includes a plurality of inverted L-shaped pressing portions used for fixing the liquid crystal driver substrate on one side. Furthermore, screw holes are formed in the three corners of the fixed holder frame for passing through the male screws that penetrate the backlight shield with respect to the female screw holes of the front cabinet body described above. The other corner where the screw hole is not formed has a shape in which the corner portion is recessed toward the fixed holder frame. This is a configuration for avoiding a collision with the engaging means of the shield frame when stacking the fixed holder frames because the protruding engaging means of the shield frame is a screw hole. Thus, when one corner of the fixed holder frame is different from the other corners, it is not necessary to place the wrong holder on the right and left when stacking from above.

  Further, the fixing holder frame can fix not only the bezelless liquid crystal substrate but also the liquid crystal driver substrate. FIG. 20 is a partial perspective view including a liquid crystal driver substrate. In the step of placing the bezelless liquid crystal substrate (2005) on the shield frame vertically from above, the liquid crystal driver substrate (2004) connected to the bezelless liquid crystal substrate (2005) via the flexible substrate (2007) is a front cabinet. The body (2001) is supported upright by the support portion (2002) of the body (2001). Then, the driver substrate (2004) is sandwiched and fixed by the support portion (2002) and the pressing portion (2006) of the fixed holder frame (2003). Thus, it becomes possible to fix the position of the liquid crystal driver substrate by sequentially stacking the members. This process will be specifically described. FIG. 21 is a diagram illustrating a state in which the liquid crystal driver substrate (2004) is supported upright by the support portion (2002). As shown in FIG. 21A, when the bezel-less liquid crystal substrate (2005) is stacked from above, the liquid crystal driver substrate (2005) comes into contact with the L-shaped support portion (2002). As a result, the liquid crystal driver substrate (2005) is placed in the support portion (2002). And since the force which urges | biases to a liquid crystal driver board | substrate (2005) direction acts from a flexible substrate (2007), a liquid crystal driver board | substrate (2005) will be supported upright by a support part (2002). Further, as shown in FIG. 22, the liquid crystal driver substrate (2002) is sandwiched by stacking the fixed holder frame having the pressing portion (2006) from above on the liquid crystal driver substrate (2005) supported upright. In addition to being fixed, the position of the fixed holder frame itself is also regulated.

  The fixed holder frame fixes the bezelless liquid crystal substrate only with the force in the normal direction with the shield frame already described. That is, it is possible to fix the bezelless liquid crystal substrate without performing screwing from the side. Therefore, it is not necessary to have means for directly joining the fixed holder frame and the shield frame. In this way, since it is possible to fix the bezelless liquid crystal substrate by stacking members in order from the top without attaching reinforcing metal fittings to the bezelless liquid crystal substrate, thin display panel structures can be stacked and assembled automatically. it can.

(Optical sheet placement process)
In the step of arranging the optical sheet (S0805), the optical sheet is arranged in the fixed holder frame. The “fixed holder frame” refers to the fixed holder frame placed in the above-described fixed holder frame placing step (S0804). For example, as shown in FIG. 23, the fixed holder frame (2301) has an optical sheet storage area (2302) indicated by oblique lines in the frame, and the optical sheet storage area (2302) is stacked from above. Thus, the optical sheet (2303) is arranged. The optical sheet (2303) and the optical sheet storage area (2302) have the same size. For this reason, it is possible to easily regulate the position of the optical sheet only by stacking the optical sheets from above on the optical sheet storage area. Further, the corner surface of the fixed holder frame (2303) on the optical sheet storage area (2302) side is a gentle angle so as to form an obtuse angle, for example. In such an angle, when optical sheets are stacked from above, even if an error occurs in the arrangement position, the optical sheets can be lowered to the optical sheet storage area without being caught by the fixed holder frame. Because it can. The “optical sheet” may be, for example, a translucent diffusion sheet that scatters and diffuses light, or may be a prism sheet that has a forward condensing effect. These sheets may be film-like or plate-like. Moreover, the optical sheet arrange | positioned in the frame of a fixed holder may not be single, and a some optical sheet may be accommodated. FIG. 24 is a diagram showing an example of the optical sheet (2303). The optical sheet (2303) includes a prism sheet 1 (2401), a prism sheet 2 (2402), a diffusion sheet (2403), and a diffusion plate (2404) in this order from the fixed holder frame side. These may be stacked separately and arranged in the optical sheet storage area, or may be stacked and integrated in the optical sheet storage area. The size of the optical sheet is preferably the same as that of the bezelless liquid crystal substrate. This is because if it is smaller than the bezelless liquid crystal substrate, it is impossible to apply a light condensing effect to the end portion.

(Lamp holder frame placement process)
In the step of placing the lamp holder frame (S0806), the lamp holder frame is placed on the fixed holder frame. The “fixed holder frame” may be the fixed holder frame placed in the above-described fixed holder frame arranging step (S0804), or the optical sheet is placed in the frame in the above-described optical sheet arranging step (S0805). It may be a fixed holder frame arranged in the box. The “lamp holder frame” is a frame that holds a lamp used as a backlight. FIG. 25 (a) shows an example of a front view of the lamp holder frame, and FIG. 25 (b) shows an example of a rear view of the lamp holder frame. FIG. 26A and FIG. 25B show an example of a perspective view of the lamp holder frame. As shown in these drawings, the lamp holder frame is a frame-shaped body. The lamp holder frame has a plurality of tubular lamps in a bridge shape. These tubular lamps are held by a holding portion protruding to the backlight shield side. The tubular lamp has a U-shape, and its end is concentrated on one side of the lamp holder frame. A thermal insulator is provided in the central part of the tubular lamp. The surface of the lamp holder frame facing the fixed holder frame has a stepped portion for regulating the position of the lamp holder frame by overlapping itself with the fixed holder frame. Further, the lamp holder frame includes a pressing surface for pressing the optical sheet onto the fixed holder frame facing surface. This will be described with reference to FIG. FIG. 27 is a partial cross-sectional view including a lamp holder frame. FIG. 27B shows a cross section of the BB ′ plane shown in FIG. As shown in FIG. 27B, when the lamp holder frame (2702) is stacked on the fixed holder frame (2701) from above, the lamp holder frame (2702) has a step portion (2703). Accordingly, the position of the lamp holder frame (2702) can be regulated on the fixed holder (2701). For example, the optical sheet storage area (2708) of the fixed holder frame and the liquid crystal substrate side pressing surface (2704) have substantially the same frame shape, and the liquid crystal substrate side pressing surface ( The stepped portion (2703) that protrudes in the direction of the outside of the frame from 2704) and forms a step has a substantially same frame size as the fixed holder frame (2701). Accordingly, the lamp holder frame can be brought into close contact with the fixed holder frame via the stepped portion, so that the position of the lamp holder frame can be regulated by being stacked on the fixed holder frame.

  The four sides of the optical sheet (2706) stored in the optical sheet storage area of the fixed holder frame (2701) are pressed down by the liquid crystal substrate side pressing surface (2704) of the lamp holder frame (2702). Therefore, the optical sheet can be pressed uniformly, and the occurrence of uneven brightness can be prevented.

(Backlight shield placement process)
In the step of placing the backlight shield (S0807), the backlight shield is placed on the lamp holder frame. The “lamp holder frame” is a lamp holder frame placed in the lamp holder placement step (S0806) described above. The backlight shield reflects the light of the lamp included in the lamp holder frame toward the bezelless liquid crystal substrate side. The backlight shield preferably includes a reflection surface that reflects light on the inner surface portion. The reflecting surface may be configured by applying a light reflecting material. Since the backlight shield has a reflective surface, a reflection sheet that has been required in the past can be eliminated, the cost of the reflection sheet member can be reduced, and the insertion work of the reflection sheet can be omitted in the thin display panel structure. Therefore, the number of work steps can be reduced. FIG. 28A shows an example of a front view of the backlight shield, and FIG. 28B shows an example of a rear view of the backlight shield. FIGS. 29A and 29B are diagrams showing an example of a perspective view of the backlight shield. The backlight shield has screw holes at four corners, and the male screw reaches the female screw hole of the front cabinet body already described through the screw hole. In this way, the backlight shield and the front cabinet body are joined at the final stage of the assembly process with screws or the like, so that a force in the normal direction is applied, and the stacked members can be fixed. .

  FIG. 30 is a diagram illustrating an example of the assembly process described above. Since the thin display panel structure manufacturing method of the present invention can manufacture a thin display panel without using a reinforcing member such as a bezel member as compared with the conventional assembly process of FIG. Cost reduction can be realized. Moreover, since it becomes possible to manufacture a thin display panel structure only by sequentially stacking without performing each assembly process separately, it is possible to realize a significant reduction in the number of work steps. For this reason, it is possible to realize a significant reduction in costs at the time of manufacturing a thin display panel structure.

The perspective view for demonstrating the assembly structure of a thin display panel structure 1st figure which shows an example of the manufacturing method of a thin display panel structure The 2nd figure which shows an example of the manufacturing method of a thin display panel structure 3rd figure which shows an example of the manufacturing method of a thin display panel structure FIG. 4 shows an example of a method for manufacturing a thin display panel structure. FIG. 5 shows an example of a method for manufacturing a thin display panel structure. FIG. 6 shows an example of a method for manufacturing a thin display panel structure. FIG. 7 shows an example of a method for manufacturing a thin display panel structure. Front view showing an example of front cabinet body Rear view showing an example of front cabinet body A perspective view showing an example of a front cabinet body Partial perspective view showing an example of a front cabinet body and a shield frame Partial perspective view showing an example of a front cabinet body Overall front view and back view showing an example of shield frame A perspective view showing an example of a shield frame Partial perspective view showing an example of a shield frame and a bezelless liquid crystal substrate Partial sectional view for explaining the configuration of the shield frame Front and rear views showing an example of a fixed holder frame A perspective view showing an example of a fixed holder frame Partial perspective view for explaining how to fix the liquid crystal driver substrate Diagram for explaining stacking of LCD driver boards Sectional drawing for demonstrating the fixation aspect of a liquid crystal driver substrate The perspective view for demonstrating an optical sheet storage area | region The figure which shows an example of an optical sheet Front and rear views showing an example of lamp holder frame A perspective view showing an example of a lamp holder frame Partial sectional view for explaining the structure of the lamp holder frame Front and back views showing an example of a backlight shield A perspective view showing an example of a backlight shield The figure which shows an example of the assembly process of the thin display panel structure of this invention The figure which shows an example of the assembly process of the conventional liquid crystal television

Explanation of symbols

0101 Front cabinet body 0102 Shield frame 0103 Bezel-less liquid crystal substrate 0104 Fixed holder frame 0105 Optical sheet 0106 Lamp holder frame 0107 Backlight shield

Claims (9)

Arranging the front cabinet body;
Placing the shield frame separate from the bezel-less liquid crystal substrate on the front cabinet body;
For manufacturing a thin display panel structure. Furthermore, the step of placing the bezelless liquid crystal substrate on the shield frame placed above,
The manufacturing method of the thin display panel structure of Claim 1 containing this. Arranging the bezelless liquid crystal substrate; and
Placing a fixed holder frame on the bezelless liquid crystal substrate;
For manufacturing a thin display panel structure. Arranging the fixed holder frame;
Arranging the optical sheet in the fixed holder frame;
For manufacturing a thin display panel structure. Arranging the fixed holder frame;
Placing the lamp holder frame on the fixed holder frame;
For manufacturing a thin display panel structure. Arranging the lamp holder frame; and
Placing the backlight shield on the lamp holder frame;
For manufacturing a thin display panel structure. Arranging the front cabinet body;
Placing the shield frame separate from the bezel-less liquid crystal substrate on the front cabinet body;
Placing the bezelless liquid crystal substrate on the shield frame;
Placing the fixed holder frame on the bezelless liquid crystal substrate;
Arranging the optical sheet in the fixed holder frame;
Placing the lamp holder frame on the fixed holder frame;
For manufacturing a thin display panel structure. Arranging the shield frame;
Placing the bezelless liquid crystal substrate on the shield frame;
Placing the fixed holder frame on the bezelless liquid crystal substrate;
Arranging the optical sheet in the fixed holder frame;
Placing the lamp holder frame on the fixed holder frame;
Placing the backlight shield on the lamp holder frame;
For manufacturing a thin display panel structure. Arranging the front cabinet body;
Placing the shield frame separate from the bezel-less liquid crystal substrate on the front cabinet body;
Placing the bezelless liquid crystal substrate on the shield frame;
Placing the fixed holder frame on the bezelless liquid crystal substrate;
Arranging the optical sheet in the fixed holder frame;
Placing the lamp holder frame on the fixed holder frame;
Placing the backlight shield on the lamp holder frame;
For manufacturing a thin display panel structure.

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