Restraining device for flexible wiring substrate and display device using same

Abstract

Provided are a restriction device capable of restricting a flexible wiring substrate so that the flexible wiring substrate does not easily move only by inserting the flexible wiring substrate extending from a display panel or the like into an insertion part, and a display device using the restriction device. When the flexible wiring board (10) is inserted into the insertion portion (21), a protruding portion (14) extending from an edge portion (13) of the flexible wiring board (10) slides up and travels on an inclined portion (22c) of the rear restriction portion (22) while bending, and when the protruding portion (14) exceeds a top portion (22a) of the inclined portion (22c), the protruding portion (14) returns to a flat plate shape due to an elastic restoring force. The flat-plate-shaped protruding part (14) is embedded in a limiting area (25) between the front limiting part (23) and the rear limiting part (22) and within the range of the height (H), and is limited to not move back and forth.

Description

Technical Field

[0001] The present invention relates to a restricting device for a flexible wiring substrate capable of restricting movement in a tensile direction when a tensile force or the like acts on the flexible wiring substrate, and a display device using the restricting device. Background Art

[0002] For example, in the assembly process of the display device, it is necessary to insert the flexible wiring substrate extending from the display panel into the interior of the bracket, and connect the connection portion of the front end of the flexible wiring substrate in the insertion direction to the connector provided inside the bracket. In this operation, if an excessive tensile force is applied to the flexible wiring substrate, excessive stress will act on the connection portion between the display panel and the flexible wiring substrate, and there is a concern that the connection portion will be damaged or cracks will appear in the display panel. In order to prevent such a phenomenon, it is preferable to provide a limiting device in the bracket to limit the excessive movement of the inserted flexible wiring substrate.

[0003] Patent Document 1 discloses an invention related to a fixing structure of a flexible wiring substrate. Figures 1 to 4 The described fixing structure forms rectangular openings at two locations of the substrate on which the connector is mounted. A pair of locking parts protruding in two directions orthogonal to the insertion direction of the connector are formed on the flexible wiring substrate, and when the connection terminal portion of the flexible wiring substrate is engaged with the connector, the pair of locking parts are respectively located in the openings. By inserting the locking parts into the openings, the flexible wiring substrate is prevented from moving in a direction perpendicular to the horizontal direction. Figures 7 to 10 The described fixing structure forms a T-shaped opening on a substrate on which a connector is mounted, and the opening has a pair of locking pieces facing each other in the opening. After the connection terminal of the flexible wiring substrate is fitted into the connector, the flexible wiring substrate is inserted through the opening between the pair of locking pieces and positioned in the opening while a pair of locking members protruding in two directions from the flexible wiring substrate are positioned on the surface of the substrate. This prevents the connection terminal from being pulled out of the connector.

[0004] In the display device described in Patent Document 2, a liquid crystal display panel is fixed to a housing. A locking protrusion having a head and a column is provided on the outer side surface of the housing. A locking hole and a slit extending from the locking hole are formed in a flexible wiring substrate connected to a terminal arrangement portion of the liquid crystal display panel. The flexible wiring substrate is bent along the outer side surface of the housing so that the locking hole passes over the head of the locking protrusion and fits into the column of the locking protrusion, thereby locking the flexible wiring substrate in a manner that does not separate from the locking protrusion.

[0005] [Prior art literature]

[0006] [Patent Document]

[0007] [Patent Document 1] Japanese Patent No. 4827971

[0008] [Patent Document 2] Japanese Patent No. 5569345 Summary of the invention

[0009] In Patent Document 1 Figures 1 to 4 In the described fixing structure, after the connection terminal portion of the flexible wiring substrate is fitted into the connector, a complicated operation is required to bend a pair of locking members integral with the flexible wiring substrate and insert them into the opening. In the assembly process of fitting the flexible wiring substrate into the connector, it is ideal to position the flexible wiring substrate only by inserting or embedding it in a direction along the surface of the substrate, but such an assembly process cannot be achieved in the described fixing structure. Figures 7 to 10 In the described fixing structure, after fitting the connection terminal portion of the flexible wiring substrate to the connector, it is necessary to forcibly press the flexible wiring substrate into the opening between the pair of locking pieces while bending the flexible wiring substrate, which makes the wiring work of the flexible wiring substrate more complicated.

[0010] The display device described in Patent Document 2 requires the following operation: bending the flexible wiring substrate connected to the terminal arrangement portion of the liquid crystal display panel along the outer side surface of the shell so that the locking hole passes over the head of the locking protrusion and engages with the column portion of the locking protrusion, making the wiring operation of the flexible wiring substrate more complicated.

[0011] The present invention is used to solve the above-mentioned technical problems in the past, and its purpose is to provide a limiting device for a flexible wiring substrate and a display device using the limiting device. The limiting device for a flexible wiring substrate can reliably limit the flexible wiring substrate from detaching by a simple operation of inserting the flexible wiring substrate into an insertion portion in a direction along the surface of the substrate.

[0012] The limiting device of the flexible wiring substrate of the present invention has an insertion portion into which at least two side portions of the flexible wiring substrate are inserted in a direction along the substrate surface of the flexible wiring substrate, and the limiting device of the flexible wiring substrate is characterized in that the two side portions of the flexible wiring substrate are formed with: two edge portions located on both sides of the width direction intersecting with the insertion direction of the insertion into the insertion portion; and a protruding piece portion protruding from the two edge portions toward the outside of the width direction, and the insertion portion is provided with: a rear limiting portion protruding in the thickness direction of the flexible wiring substrate; a front limiting portion located at a position forward of the insertion direction relative to the rear limiting portion; a limiting area formed between the front limiting portion and the rear limiting portion; and an inner limiting portion located at a position inner of the width direction of the flexible wiring substrate relative to the rear limiting portion and protruding in a direction opposite to the protruding direction of the rear limiting portion, and when the flexible wiring substrate is inserted into the insertion portion, the protruding piece portion passes over the rear limiting portion and is limited in the front-rear direction within the limiting area.

[0013] The limiting device of the flexible wiring substrate of the present invention can be constructed as follows: the top of the inner limiting portion is located at a height position between the top of the rear limiting portion and the base; when the flexible wiring substrate is inserted into the insertion portion, the front end of the protruding piece contacts the rear limiting portion, and the portion located on the inner side of the width direction than the front end contacts the inner limiting portion and is bent and deformed; during the insertion process, the protruding piece enters the limiting area due to the elastic restoring force when the front end is detached from the rear limiting portion.

[0014] Preferably, in the restricting device for the flexible wiring board of the present invention, the rear restricting portion is formed with an inclined portion, and the inclined portion is inclined forward in the insertion direction from the base to the top thereof.

[0015] Preferably, the restricting device for the flexible wiring board of the present invention has a structure in which a thin piece portion whose dimension in the front-rear direction is shortened is formed at the front end portion of the protruding piece portion, and the thin piece portion contacts the rear restricting portion.

[0016] In addition, the limiting device of the flexible wiring substrate of the present invention can be constructed as follows: a front protruding piece protruding forward is formed on the thin piece portion, and a front opening portion aligned with the front limiting portion is formed on the insertion portion, and when the protruding piece portion enters the limiting area, the front protruding piece is located in the front opening portion.

[0017] Next, the display device of the present invention comprises: a bracket; and a display panel, which is fixed to the bracket, and has a limiting device for any one of the flexible wiring substrates, characterized in that the insertion portion is provided on the bracket, and the flexible wiring substrate is inserted into the insertion portion and limited in a state of being bent from the display panel toward the bracket.

[0018] [Effects of the invention]

[0019] The limiting device for the flexible wiring substrate of the present invention can make the protruding pieces formed on both sides of the flexible wiring substrate enter the limiting area in the insertion part only by inserting the flexible wiring substrate in the direction along the substrate surface relative to the insertion part, even without performing special operations such as manually bending and locking a part of the flexible wiring substrate. The protruding piece in the limiting area is limited in movement in the front-rear direction between the rear limiting part and the front limiting part, and the protruding piece can be limited from escaping from the limiting area by the presence of the inner limiting part.

[0020] In the display device of the present invention, when the flexible wiring substrate extending from the display panel is inserted into the bracket, the protruding portion is restricted by the restricting device, so even if the flexible wiring substrate is stretched toward the inside of the bracket using a clamp or a tool, excessive stress will not act on the connection portion between the flexible wiring substrate and the display panel. Therefore, it is easy to prevent the connection portion from being damaged or a part of the display panel from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a perspective view showing an embodiment of a display device of the present invention from the outside of the display device.

[0022] Figure 2 Yes means Figure 1 The diagram of the limiting device of the flexible wiring substrate provided in the display device shown in FIG. 1 is a diagram of the limiting device of the flexible wiring substrate provided in the display device shown in FIG. 1 , in which the limiting device of the flexible wiring substrate provided in the display device shown in FIG. 1 is a diagram of the limiting device of the flexible wiring substrate provided in the display device shown in FIG. Figure 1 A partial cross-sectional view of a display device after being cut off.

[0023] Figure 3 It means that it will be Figure 1 The display panel provided in the display device shown is a perspective view shown from the inner surface side.

[0024] Figure 4 It means that Figure 3 A partial side view showing the process of bending a flexible wiring substrate connected to a display panel.

[0025] Figure 5 It means that it will be Figure 4 A partial side view of the step of inserting the bent flexible wiring substrate into the bracket into the insertion portion constituting the limiting device in the step.

[0026] Figure 6 and Figure 5 Similarly, this is a partially cutaway perspective view showing a step of inserting the flexible wiring board into the insertion portion.

[0027] Figure 7 and Figure 5 and Figure 6 Similarly, this is a front view including a part of a cross section showing a process of inserting the flexible wiring board into the insertion portion and a process of the protruding piece of the flexible wiring board entering the restriction area of ​​the restriction device, as viewed from the front of the display device.

[0028] Figure 8 This is a diagram showing a process in which a protruding piece of a flexible wiring substrate enters a restricted area of ​​a restricting device, and is viewed obliquely from substantially the left. Figure 7 A stereogram obtained by viewing the front view.

[0029] Fig. 9 The figure shows the process of the protruding piece of the flexible wiring substrate entering the restricted area of ​​the restriction device. Figure 7 IX-IX indicates a cross-sectional view.

[0030] Fig.10 A modification of the limiting device for the flexible wiring substrate of the present invention is shown in FIG. Fig. 9 Equivalent cross-sectional view. DETAILED DESCRIPTION

[0031] exist Figure 1 The overall stereogram and Figure 2 The display device 1 according to the embodiment of the present invention is shown in the II-II line cross-sectional view. Figures 1 to 10 In each figure, the Z1 direction is the inside of the device, and the Z2 direction is the outside of the device. In addition, the Z1 direction is the front of the insertion direction of the flexible wiring substrate, and the Z2 direction is the back. The Y1 direction is the top of the device, and the Y2 direction is the bottom of the device. The X1 direction is the right direction of the device, and the X2 direction is the left direction of the device.

[0032] Figure 1 and Figure 2 The display device 1 shown in the figure has a main body housing 2. The main body housing 2 is mainly made of a synthetic resin material and has a rectangular shape when viewed from the outside of the device (in the Z2 direction). Figure 2 As shown, the open portion 2a faces the outside of the device (Z2 direction). A bracket 3 is fixed to the main housing 2, and a part of the open portion 2a of the main housing 2 is covered by the bracket 3. A display panel 5 is fixed to the outside (Z2 side) of the holder 3. A support portion 3a extending toward the inside (Z1 direction) of the device is integrally formed on the bracket 3, and a circuit substrate 4 is fixed to the support portion 3a. Various electronic components are mounted on the circuit substrate 4, and a connector 6 is mounted on the surface of the circuit substrate 4 on the inside (Z1 direction) of the device.

[0033] The display panel 5 is a liquid crystal display panel or an electroluminescent panel. The display panel 5 is composed of two overlapping glass substrates, and the flexible wiring substrate 10 is connected to the inner surface 5a of the display panel 5 facing the inner side of the device (Z1 direction). Figure 2 As shown, a limiting device 20 for limiting the movement of the flexible wiring substrate 10 in the inward and outward directions (Z1-Z2 direction) is provided at the lower part of the display device 1. The limiting device 20 is formed by a part of the bracket 3, or by a part of the bracket 3 and a part of the flexible wiring substrate 10.

[0034] like Figure 3 As shown, on the inner surface 5a of the display panel 5 facing the inner side of the device, a substrate connection portion 5b having a plurality of terminal portions is formed on the surface of the glass substrate. A base connection portion 11 is formed at the base of the flexible wiring substrate 10, and a plurality of terminal portions provided on the base connection portion 11 are respectively soldered and fixed to the terminal portions of the substrate connection portion 5b. A connector connection terminal portion 12 is formed at the front end portion of the flexible wiring substrate 10. A plurality of wiring layers are provided on the substrate surface of the flexible wiring substrate 10 to conduct the base connection portion 11 and the connector connection terminal portion 12. As shown in FIG. Figure 4 As shown, in the initial stage of the assembly process of the display device 1, the flexible wiring substrate 10 is bent at an angle of approximately 90 degrees from the inner surface 5a of the display panel 5 using a jig, and the connector connection terminal portion 12 faces the device inner direction (Z1 direction). Figure 4 and Figure 5 The flexible wiring board 10 is mounted on the bracket 3 in the direction shown, and is inserted into the restricting device 20 in the direction along the surface of the board. The Z1 direction is the insertion direction of the flexible wiring board 10 into the bracket 3.

[0035] like Figure 3 As shown, the flexible wiring substrate 10 is integrally formed with: Figure 4 The edges 13, 13 on both sides of the flexible wiring substrate 10 in the width direction (X1-X2 direction) intersecting the Z1 direction of the flexible wiring substrate 10; and the protruding pieces 14, 14 protruding outward from each edge 13 in the width direction (X1-X2 direction). The "two sides" of the flexible wiring substrate 10 refer to the parts including the edges 13 and the protruding pieces 14. Each protruding piece 14 has: a thick piece part 14a, which protrudes outward from the edge 13 and has a larger width dimension W1 in the insertion direction; and a thin piece part 14b, which protrudes further outward from the thick piece part 14a, and has a width dimension W2 in the insertion direction that is shorter than the width dimension W1. The shapes of the thick piece part 14a and the thin piece part 14b are Fig. 9 Shown enlarged in .

[0036] exist Figure 2 , Figure 5 and Figure 6In the figure, the structure of the limiting device 20 for limiting and positioning the flexible wiring substrate 10 inserted in the Z1 direction is shown in a cross-sectional view. In the limiting device 20, an insertion portion 21 is formed in the bracket 3. The insertion portion 21 is a through hole with a rectangular cross section that penetrates the bracket 3 in the device inside-outside direction (Z1-Z2 direction). The bracket 3 is formed of a conductive metal material, and by inserting the flexible wiring substrate 10 into the insertion portion 21 formed in the metal bracket 3, it is easy to meet the requirements of EMC (electromagnetic compatibility). However, the bracket 3 is provided with a synthetic resin material layer 3b covering the metal material at least in the portion where the insertion portion 21 is formed.

[0037] exist Figure 2 , Figure 5 , Figure 6 as well as Figure 7 Hereinafter, the guide structure of the right side portion of the insertion portion 21, i.e., the portion inserted into the right side (X1 side) of the flexible wiring substrate 10, is shown. The structure of the insertion portion 21 is bilaterally symmetrical, and a guide structure bilaterally symmetrical to the guide structure on the right side is provided on the left side (X2 side) of the insertion portion 21.

[0038] like Figure 8 and Fig. 9 As shown in the enlarged view, inside the insertion portion 21, as a guide structure for guiding the side of the flexible wiring substrate 10, a rear limiter 22 located outside the device (Z2 direction) and a front limiter 23 located inside the device (Z1 direction) are provided. Figure 7 and Figure 8 As shown, in the guide structure, an inner limiter 24 is provided on the inner side of the flexible wiring substrate 10 in the width direction of the rear limiter 22. The rear limiter 22, the front limiter 23 and the inner limiter 24 are formed by a part of the synthetic resin material layer 3b covering the metal material constituting the bracket 3.

[0039] like Figure 7 and Figure 8 As shown in FIG. 1 , the rear limiting portion 22 protrudes in the thickness direction of the inserted flexible wiring substrate 10, and the inner limiting portion 24 protrudes in the thickness direction of the flexible wiring substrate 10 and in the direction opposite to the rear limiting portion 22. In the insertion portion 21 of the embodiment, the rear limiting portion 22 protrudes upward (in the Y1 direction), and the inner limiting portion 24 protrudes inwardly from the rear limiting portion 22 and downward (in the Y2 direction). Figure 7 and Figure 8 As shown in FIG. 2 , the downward top 24a of the inner limiting portion 24 is located at a height position between the top 22a and the base 22b of the rear limiting portion 22. Figure 5 As shown, when viewed from either the left or right direction (the X1 direction or the X2 direction), a portion of the top 22a of the rear restricting portion 22 and a portion of the top 24a of the inner restricting portion 24 overlap each other. Figure 7 As shown, when viewed from the front, the rear restricting portion 22 and the inner restricting portion 24 are located at positions separated in the left-right direction (X1-X2 direction) and extend in different directions in the up-down direction (Y1-Y2 direction).

[0040] like Fig. 9 As shown in FIG. 1 , the wall portion of the rear limiting portion 22 facing forward (Z1 direction) is the rear limiting wall portion 22e, and the wall portion of the front limiting portion 23 facing backward (Z2 direction) is the front limiting wall portion 23a. The distance D between the rear limiting wall portion 22e and the front limiting wall portion 23a in the device inner and outer directions is slightly wider than the width dimension W2 of the thin piece portion 14b of the protrusion 14 formed on the flexible wiring substrate 10 in the front-back direction. Figure 7 As shown, a gap of height H is formed between the lower inner wall portion 21a of the insertion portion 21 and the top 24a of the inner limiting portion 24, and the front limiting wall portion 23a of the front limiting portion 23 is located in front of the inside of the gap of height H. In addition, the gap of height H is located at a position lower than the top 22a of the rear limiting portion 22. The space of the opposing distance D between the front limiting wall portion 23a and the rear limiting wall portion 22 is the restricted area 25. Alternatively, the space of the opposing distance D and the space of height H is the restricted area 25. The restricted area 25 refers to the area between the rear limiting portion 22 and the front limiting portion 23, or the area between the rear limiting portion 22 and the front limiting portion 23 and between the top 24a of the inner limiting portion 24 and the lower inner wall portion 21a of the insertion portion 21.

[0041] like Figure 8 and Fig. 9 As shown, the wall portion of the rear restricting portion 22 facing the outside of the device (Z2 direction) is formed with an inclined portion 22c that is inclined forward in the insertion direction from the base 22b to the top 22a. Figure 7 and Figure 8 As shown, the wall portion of the rear restricting portion 22 facing the inner side (X2 side) is formed with an inclined portion 22d, which is inclined from the base 22b to the top 22a in a direction away from the edge 13 of the flexible wiring substrate 10 (X1 direction). Figure 8 As shown, on the wall portion of the inner restricting portion 24 facing the outside of the device (Z2 direction), an inclined portion 24c inclined toward the front of the insertion direction (Z1 direction) is formed from the base 24b to the top 24a.

[0042] Next, the assembly process (assembly method) of the display device 1 and the restraining process (restraining method) of the flexible wiring substrate 10 in the restraining device 20 are described. Figure 3As shown, the flexible wiring substrate 10 is in a flat plate shape in a free state, and the base connection portion 11 is soldered to the substrate connection portion 5b formed on the inner surface 5a of the display panel 5. In the assembly process of the display device 1, first, as shown in FIG. Figure 4 As shown, the flexible wiring board 10 connected to the inner surface 5a of the display panel 5 is bent approximately 90 degrees from the inner surface 5a of the display panel 5 toward the inside of the device (Z1 direction). A jig is used for this bending operation.

[0043] Then, if Figure 5 As shown, the insertion portion 21 constituting the limiting device 20 in the bracket 3 inserts the flexible wiring substrate 10 toward the inside of the device (Z1 direction) while the display panel 5 is embedded in the frame portion 3c of the bracket 3 toward the outside of the device (Z2 direction), and the display panel 5 is fixed to the bracket 3 by means of concave-convex fitting, screw fixing, etc. In this process, as shown in FIG. Figure 5 As shown, the front end of the flexible wiring board 10 facing the Z1 direction is held by a clamp, and a tensile force F is applied to the front end, so that the flexible wiring board 10 is forcibly fed into the device (Z1 direction) in the insertion portion 21.

[0044] like Figure 5 and Figure 6 As shown in the figure, the main body of the flexible wiring substrate 10 inserted into the insertion part 21, except for the left and right protrusions 14, 14, is fed into the device inner side (Z1 direction) through the left and right front limiting parts 23, 23. In the middle of the flexible wiring substrate 10 being pulled into the device inner side, the front end of the protrusion 14 protruding outward to the left and right sides, that is, the thin piece 14b, contacts the inclined part 22c facing outward (Z2 direction) of the rear limiting part 22 located on the left and right side parts of the insertion part 21, and as the flexible wiring substrate 10 is pulled into the device inner side (Z1 direction), the thin piece 14b slides on the inclined part 22c and is guided upward.

[0045] In the flexible wiring substrate 10 Figure 5 and Figure 6 When the position shown in the figure moves further toward the inside of the device (Z1 direction), the protrusion 14 is guided downward (Y2 direction) by the inclined portion 24c of the inner limiting portion 24 facing the outside of the device (Z2 direction) and is guided into a gap of height H formed between the lower inner wall portion 21a of the insertion portion 21 and the top 24a of the inner limiting portion 24. Figure 7As shown by the dotted line in the middle, the thin piece 14b of the protrusion 14 slides on the inclined portion 22c of the rear limiting portion 22, and the thick piece 14a, for example, which is closer to the inside in the width direction than the thin piece 14b, is pressed from above by the top 24a of the inner limiting portion 24, so that the protrusion 14 is pulled inward (in the Z1 direction) of the device while being bent with the thin piece 14b facing upward. The thin piece 14b has a short width dimension W2 from front to back and is less rigid than other parts. Therefore, when the flexible wiring substrate 10 is pulled inward (in the Z1 direction), the thin piece 14b does not generate much resistance, and can be pulled inward (in the Z1 direction) of the device. Figure 7 It bends as shown by the dashed line.

[0046] When the flexible wiring substrate 10 is pulled in the Z1 direction by the clamp, the thin piece 14b of the protrusion 14 moves toward the inside of the device (Z1 direction) while sliding on the inclined portion 22c of the rear restricting portion 22, and passes over the top 22a of the rear restricting portion 22 and is separated from the top 22a. Figure 7 The protrusion 14 in the deflected state shown by the dotted line returns to its original state by its elastic restoring force. Figure 7 The solid line shows the flat plate state. Figure 7 and Figure 8 As shown, the wall portion of the rear limiting portion 22 facing the inner side (X2 side) is formed with an inclined portion 22d inclined from the base 22b to the top 22a in a direction away from the edge 13 of the flexible wiring substrate 10 (X1 direction), as shown in FIG. Figure 8 and Fig. 9 As shown in FIG. 1 , the width dimension of the inclined portion 22c of the rear restricting portion 22 toward the outside of the device (Z2 direction) in the left-right direction (X1-X2 direction) gradually narrows from the base 22b toward the top 22a. Therefore, the thin piece 14b sliding up the inclined portion 22c of the rear restricting portion 22 is easy to detach from the top 22a when it reaches the vicinity of the top 22a of the rear restricting portion 22.

[0047] like Figure 8 and Fig. 9 As shown, the protrusion 14 restored to a flat plate state enters the restriction area 25 between the rear restriction wall portion 22e and the front restriction wall portion 23a (opposite distance D) and between the top 24a of the inner restriction portion 24 and the lower inner wall portion 21a (height H). The front edge portion 14c of the protrusion 14 entering the restriction area 25 is restricted by the front restriction wall portion 23a of the front restriction portion 23 so as not to move toward the inside of the device (Z1 direction), and its rear edge portion 14d is restricted by the rear restriction wall portion 22e of the rear restriction portion 22 so as not to return toward the outside of the device (Z2 direction). Moreover, the downward top portion 24a of the inner restriction portion 24 is located at a height position between the top 22a and the base 22b of the rear restriction portion 22, as shown in FIG. Figure 5As shown, the rear restricting wall portion 22e is located at a position overlapping the inner restricting portion 24 in the left-right direction (X1-X2 direction). Therefore, the upward movement of the protruding portion 14 is suppressed, and the protruding portion 14 is not likely to escape from the restricting region 25.

[0048] In the process of assembling the display panel 5 on the bracket 3, as shown in FIG. Figure 5 As shown, by simply inserting the flexible wiring substrate 10 toward the inside of the device into the insertion portion 21 constituting the limiting device 20 and applying a tensile force F to the flexible wiring substrate 10 from the inside of the holder 3, the left and right protrusions 14 pass over the rear limiting portion 22 and automatically fit into the inside of the limiting area 25. Therefore, without going through a complicated assembly process such as manually bending a part of the flexible wiring substrate 10 and inserting it into the slit, or manually bending the flexible wiring substrate 10 while inserting it into the cutout portion or the hole portion, the flexible wiring substrate 10 can be limited and positioned in the holder 3 without excessively moving forward and backward (in the Z1-Z2 direction).

[0049] In the process of assembling the display panel 5 to the bracket 3, after the protrusion 14 of the flexible wiring substrate 10 inserted into the insertion portion 21 is inserted into the restriction area 25 inside the insertion portion 21, the flexible wiring substrate 10 is slightly bent to fix the display panel 5 to the frame portion 3c of the bracket 3 facing the outside of the device (Z2 direction). In the partially assembled state where the display panel 5 is fixed to the bracket 3, the distance between the protrusion 14 restricted in the restriction area 25 and the connection portion between the inner surface 5a of the display panel 5 and the base connection portion 11 is maintained. Therefore, even if the front end portion of the flexible wiring substrate 10 protruding from the bracket 3 to the inside of the device (Z1 direction) is pulled in the Z1 direction or pressed in the Z2 direction, it is possible to prevent excessive force from acting on the connection portion between the inner surface 5a of the display panel 5 and the base connection portion 11.

[0050] In the process before or after the display panel 5 is mounted on the bracket 3, Figure 2 The circuit substrate 4 shown is fixed to the support portion 3a extending inward (in the Z1 direction) from the bracket 3. The connector connection terminal portion 12 at the front end of the flexible wiring substrate 10 is connected to the connector 6 mounted on the circuit substrate 4. At this time, as the tensile force in the Z1 direction and the force pressing in the Z2 direction are applied to the flexible wiring substrate 10, an excessive force will not be applied to the connection portion between the inner surface 5a of the display panel 5 and the base connection portion 11.

[0051] like Figure 2 As shown, in the assembly process of the display device 1, the bracket 3 integrated with the display panel 5 is fixed to the open portion 2a of the main body housing 2. The fixing means at this time is concave-convex fitting or screw fixing.

[0052] Fig.102 shows a modified example of the limiting device 20 of the present invention. In the limiting device 20 of this modified example, a front opening portion 26 adjacent to the front limiting portion 23 is provided in the insertion portion 21 formed in the bracket 3. The front opening portion 26 opens outside the edge portion 13 of the flexible wiring substrate 10 farther away than the front limiting portion 23. A front protruding piece 14e protruding from the thin piece portion 14b to the front in the insertion direction (Z1 direction) is formed in the protruding portion 14 of the flexible wiring substrate 10. When the protruding portion 14 enters the limiting area 25 of the insertion portion 21, the front protruding piece 14e enters the inside of the front opening portion 26. By the front protruding piece 14e entering the inside of the front opening portion 26, it becomes more difficult for the protruding portion 14 to escape from the limiting area 25, and it is easy to stabilize the posture of the protruding portion 14 embedded in the inside of the limiting area 25.

[0053] The insertion portion 21 of the limiting device 20 of the above embodiment is formed by a rectangular hole that penetrates the bracket 3 in the inner and outer directions. However, as long as the rear limiting portion 22, the front limiting portion 23, the inner limiting portion 24 and the limiting area 25 are formed on the left and right sides, the insertion portion 21 may also be a structure in which the central portion in the left and right directions is open upward (in the Y1 direction). Figure 7 The structure is upside down, the rear limiting portion 22 protrudes downward (in the Y2 direction), and the inner limiting portion 24 protrudes upward (in the Y1 direction).

[0054] [Explanation of Reference Numerals]

[0055] 1 Display device

[0056] 2 Main body shell

[0057] 3 Bracket

[0058] 4 Circuit board

[0059] 5 Display Panel

[0060] 6 Connectors

[0061] 10 Flexible wiring substrate

[0062] 13 Edge

[0063] 14 Protrusion

[0064] 14a Thick sheet

[0065] 14b Thin slices

[0066] 14e Front protrusion

[0067] 20 Restraining devices

[0068] 21 Insertion

[0069] 22 Rear limiter

[0070] 22a Top

[0071] 22b Base

[0072] 22c Inclined portion

[0073] 22d Inclined portion

[0074] 23 Front limiter

[0075] 24 Inner limiter

[0076] 24a Top

[0077] 24b Base

[0078] 24c Inclined portion

[0079] 25 Restricted Areas

[0080] 26 Front opening.

Claims

1. A limiting device for a flexible wiring substrate, comprising an insertion portion for inserting at least two side portions of the flexible wiring substrate in a direction along a substrate surface of the flexible wiring substrate, characterized in that: The two side portions of the flexible wiring substrate are formed with: two edge portions located on both sides of a width direction intersecting with an insertion direction of the insertion portion; and a protruding piece portion protruding from the two edge portions toward the outer side in the width direction, The insertion portion is provided with: a rear limiting portion protruding in the thickness direction of the flexible wiring substrate; a front limiting portion located at a position forward of the insertion direction than the rear limiting portion; a limiting area formed between the front limiting portion and the rear limiting portion; and an inner limiting portion located at a position inner to the width direction of the flexible wiring substrate than the rear limiting portion and protruding in a direction opposite to the protruding direction of the rear limiting portion, When the flexible wiring board is inserted into the insertion portion, the protruding piece portion passes over the rear restricting portion and is restricted in the front-rear direction within the restriction region.

2. The limiting device for a flexible wiring substrate according to claim 1, wherein: The top of the inner limiting portion is located at a height position between the top of the rear limiting portion and the base. When the flexible wiring substrate is inserted into the insertion portion, the front end of the protruding piece contacts the rear restricting portion, and a portion located inside the front end in the width direction contacts the inner restricting portion to bend and deform. During the insertion process, the protruding piece enters into the restriction area due to the elastic restoring force when the front end portion is separated from the rear restriction portion.

3. The limiting device for a flexible wiring substrate according to claim 2, wherein: The rear restricting portion has an inclined portion formed from the base to the top thereof, the inclined portion being inclined forward in the insertion direction.

4. The limiting device for a flexible wiring substrate according to claim 2, wherein: A thin piece portion whose dimension in the front-rear direction is shortened is formed at a front end portion of the protruding piece portion, and the thin piece portion is in contact with the rear restricting portion.

5. The limiting device for a flexible wiring substrate according to claim 4, wherein: The thin piece portion is formed with a front protruding piece protruding forward. The insertion portion is formed with a front opening portion aligned with the front restriction portion. When the protruding piece enters the restricted area, the front protruding piece is located in the front opening.

6. A display device comprising: a bracket; and a display panel fixed to the bracket, comprising the limiting device of the flexible wiring substrate according to any one of claims 1 to 5, characterized in that: The bracket is provided with the insertion portion, The flexible wiring substrate is inserted into the insertion portion and restrained in a state of being bent from the display panel toward the bracket.

Images