WO1998043227A1

WO1998043227A1 - Wiring board, and display device and electronic equipment using the same

Info

Publication number: WO1998043227A1
Application number: PCT/JP1998/000175
Authority: WO
Inventors: Yoshihisa Hirano
Original assignee: Seiko Epson Corporation
Priority date: 1997-03-24
Filing date: 1998-01-19
Publication date: 1998-10-01

Abstract

A flexible wiring board (10) which connects a terminal (32) provided over the direction of width near a curved edge portion of a curved-surface liquid crystal panel (30) and a terminal (52) provided over the direction of width near an edge portion of a circuit board (50) laid out near the curved-surface liquid crystal panel (30). The wiring board (10) has a buffer area for absorbing distortion, between a panel side connection portion (12) connected to the terminal (32) of the curved-surface liquid crystal panel (30) and a circuit board side connection portion (14) connected to the terminal (52) of the circuit board (50). Thus, a highly reliable flexible wiring board for connecting the curved-surface display panel and the circuit board which prevents distortion from acting on the connection portions and prevents stress from remaining may be provided.

Description

Description Wiring board and display device and electronic equipment using it

[Technical field ]

The present invention relates to a wiring board and a display device and an electronic device using the same, particularly to a wiring substrate used for a curved display panel and a display device and an electronic device using the same. You.

[Background Art]

In various electronic devices such as telephones, mobile phones, pagers, electronic organizers, etc., liquid crystal display devices are widely used as display units for displaying visible information. Yes.

Such a liquid crystal display device includes a liquid crystal display panel and a drive circuit, and, if necessary, includes ancillary equipment such as a knock light and a casing. It must not have been installed. Then, a liquid crystal display panel ⁵ 'serving as a display surface is incorporated in the electronic device almost in parallel with the outer surface of the housing of the electronic device, and a display portion is formed.

In recent years, there has been an increasing demand for a curved surface display from the perspective of pursuit of a sense of wideness and design development of the display surface of such electronic devices. ₍ Therefore, as a structure that meets such demands, the one that incorporates a convex lens at the top of the display surface of the liquid crystal display panel built into the electronic device is used. Let's do it.

However, the above-described structure requires a convex lens at the upper part of the liquid crystal display panel, and thus has a problem of increasing the weight.

So, what is the proposal to shape the liquid crystal display panel itself into a curved surface, that is, the ability to propose a liquid crystal display panel with a curved surface? And Japanese Patent Application Laid-Open Nos. Sho 577-188015 and Sho 59-144022. When connecting such a curved display liquid crystal panel to a circuit board including its driving circuit with a flexible wiring board, the width direction of the edge of the curved display liquid crystal panel is required. The connection terminals formed over the arc draw an arc with a convex or concave center, whereas the circuit board terminals have a flat plate shape, so the wiring board that connects them Since the cross-section of one end has an arc shape and the cross-section of the other end is straight, the wiring substrate is distorted. 'As a result, poor connection may occur between each terminal and the wiring board, and non-negligible stress may remain near the connection part of the wiring board, which may reduce connection reliability. There was a nature.

In addition, when the circuit board is placed on the back of the curved display panel, it is necessary to bend the wiring board, and it is connected across the edge of the curved display panel. Since the cross-sectional shape of the bent wiring board is in an arc-shaped state, a large distortion is generated in the bent wiring board. As a result, non-negligible stress remains at the connection portion between the wiring board and each terminal, and the connection ends become uneven, resulting in low reliability of connection between the wiring board and each terminal. There was a possibility of falling.

[Disclosure of the Invention]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a flexible wiring board that connects a curved display panel and a circuit board. Panel-side connection part, which is a connection part with a terminal provided along the width direction of the curved edge of the curved display panel, and a connection part with a terminal provided on the circuit board A reliable connection board that does not cause distortion, stress, or unevenness in the circuit board side connection, and a display device and display device using the same. And providing electronic equipment. A wiring board according to the present invention includes a terminal provided in a width direction near a curved edge of a curved display panel, and an edge of a circuit board arranged near the curved display panel. A flexible wiring board for connecting the terminal provided in the vicinity of the width direction in a bent state, and the curved display panel. A buffer region for absorbing distortion between a panel-side connection portion connected to a terminal of the circuit board and a circuit-board-side connection portion connected to a terminal of the circuit board.

According to the present invention, a curved surface display is provided. Terminals are provided across the width of the curved edge of the cell, and are provided across the width of the edge of the circuit board located near the curved display panel. The wiring board that connects the terminals and has a buffer region that is easily distorted. Therefore, when connecting a curved terminal of a curved display panel to a generally flat terminal of a circuit board, the distortion generated in the wiring board causes the buffer region to be distorted. It is absorbed. As a result, such distortion almost reaches the connection part on the panel side and the connection part on the circuit board side of the wiring board, and the ends are not evenly formed. As a result, the wiring board can be easily and reliably connected to the curved display liquid crystal panel and the circuit board, and a large stress is applied to each connection portion of the wiring board. Nothing. As a result, a highly reliable connection between the curved surface display panel and the circuit board can be made.

In addition, when a circuit board is placed on the back of the curved display liquid crystal panel, the wiring board that is connected to the curved terminal of the curved display liquid crystal panel and has a cross-sectionally shaped arc is used. It is necessary to bend, but at this time, since the distortion of the wiring board occurs mostly in the buffer area that is more susceptible to distortion than the other areas, it will affect the other parts of the wiring board much more The bending of the wiring board can be easily performed without any problem. In addition, the distortion generated by bending the wiring board is almost completely absorbed in the buffer region, and reaches almost the panel connection portion and the connection portion on the circuit board side. Therefore, the wiring board can be easily and reliably connected to the circuit board, and no large stress is applied to each connection portion of the wiring board. As a result, it is possible to make a highly reliable connection between the curved display panel and the circuit board.

In addition, the wiring board according to the present invention includes a terminal provided in a width direction near a curved edge of the curved display panel, and a terminal in the vicinity of the curved display panel. A flexible wiring board for connecting to a terminal provided in the width direction near the edge of the circuit board disposed on the surface of the circuit board, which is connected to the terminal of the curved display panel. A feature is that a portion narrower than the width of the panel-side connection portion is provided between the panel-side connection portion and the circuit board-side connection portion connected to the terminal of the circuit board.

According to the present invention, a terminal provided across the width direction of a curved edge portion of a curved display panel, and an edge portion of a circuit board arranged near the curved display panel The wiring board that connects to the terminals provided in the width direction of the wiring has a narrower portion than the metal connection. As a result, the connection between the curved terminal of the curved display panel and the generally flat terminal of the circuit board causes distortion of the wiring board. This distortion is absorbed by this narrow _part.c Therefore, such distortion may extend to the panel-side connection and circuit-board-side connection of the wiring board, or the edges may be uneven. The wiring board can be connected to the curved LCD panel and the circuit board easily and securely, and the panel can be easily and reliably connected. No large stress remains on the side connection part or the circuit board side connection part. As a result, a highly reliable connection between the curved display panel and the circuit board can be made.

In addition, in order to arrange the circuit board on the back of the curved display panel, the wiring board that is connected to the curved terminal of the curved display liquid crystal panel and whose cross section has an arc shape is bent. In this case, the strain force generated on the wiring board is ⁵ ', and the part narrower than the width of the connection part on the panel side is easily bent due to the narrow width, so it is absorbed by the narrow part As a result, the wiring board can be easily bent. In addition, the distortion caused by bending the wiring board is absorbed by the narrow portion and hardly reaches the connection portion on the circuit board side. The wiring board can be easily and securely connected to the terminals of the curved display panel and the terminals of the circuit board, and it is impossible to connect the terminals on the panel side or the circuit board side. Very little stress remains.

Further, the wiring board of the present invention may be configured such that the panel-side connection portion and the circuit board-side connection portion are connected to each other. A portion narrower than the width of the connection portion on the circuit board side between the connection portion and the connection portion. -According to the present invention, the wiring board has a portion that is narrower than the panel-side connection portion and narrower than the circuit board connection portion. Therefore, by connecting to the curved terminal of the curved display panel and the generally flat terminal of the circuit board, the distortion that occurs in the wiring board is caused by this width. Absorbed by the area including the narrow part. In other words, the narrow portion acts as a buffer region. In particular, since the narrow portion is narrower than both the panel-side connection portion and the wiring-board-side connection portion, the wiring board according to the second aspect of the present invention. In comparison with this, the distortion generated in the wiring board concentrates on the narrow portion. Therefore, such distortion may extend to the connection portion on the panel side and the connection portion on the circuit board side of the wiring board. The possibility of remaining stress on the connection part on the side of the cell or on the circuit board is further reduced.

In addition, the bending of the flexible wiring board required when placing the circuit board on the back of the curved display panel is a bending force due to its narrow width? This occurs in and around the narrow part, which can easily bend the wiring board. In addition, since the distortion caused by bending is absorbed in the vicinity of the narrow portion, the connection portion of the flexible wiring board on the panel side and the connection portion on the circuit board side are surely formed. In addition to being able to connect to the curved display panel and each terminal of the circuit board, it is possible to more reliably prevent a large stress from remaining at the panel-side connection part and the circuit board-side connection part. Wear.

In addition, the wiring board of the present invention includes a terminal provided in a width direction near a curved edge of the curved display panel, and an edge of a circuit board arranged near the curved display panel. A flexible wiring board for connecting a terminal provided in the width direction in the vicinity of the portion in a bent state to a terminal connected to the terminal of the curved display panel A plurality of slits are arranged in the width direction between the connection portion and the circuit board side connection portion connected to the terminal of the circuit board. According to the present invention, a terminal provided across the width of a curved edge of a curved display panel, and an edge of a circuit board arranged near the curved display panel A flexible wiring board for connecting to terminals provided in the width direction has a plurality of slits arranged in the width direction. Therefore, connecting the curved terminal of the curved display panel to the generally flat terminal of the circuit board causes multiple distortions in the wiring board. It is absorbed by the portion where the slit is provided. That is, a portion provided with a slit which is easily deformed due to having a slit which is a space can absorb such a distortion. For this reason, such distortion almost reaches the connection part on the panel side and the connection part on the circuit board side of the wiring board, and the ends are almost irregular. Since it is not possible, the wiring board can be easily and reliably connected to the curved display liquid crystal panel and the circuit board, and the large connection area at the panel side and the circuit board side It is possible to prevent residual stress. As a result, a highly reliable connection between the curved display panel and the circuit board can be made.

In addition, in order to place the circuit board on the back of the curved display panel, wiring is required when the wiring board that is connected to the curved terminal and whose cross section has an arc shape is bent. The strain force generated on the substrate is absorbed by the portion having a slit that is easily deformed, and the wiring substrate can be easily bent. Also, the distortion force caused by bending the wiring board? This is absorbed by the slits and does not reach the panel-side connection or circuit board-side connection. And can be connected to a circuit board. In addition, since the distortion caused by bending is absorbed in the portion having this slit, a large amount is applied to the connection portion on the panel side and the connection portion on the circuit board side of the wiring board. No stress remains.

Further, a wiring board according to the present invention is characterized in that the plurality of slits are provided in a plurality of rows.

According to the present invention, the wiring board has a plurality of slits in a plurality of rows. I Therefore, the distortion that occurs on the wiring board between the connection part on the curved surface display panel side of the wiring board, whose cross section has an arc shape, and the circuit board connection part, whose cross section has a linear shape, is further increased. It can be easily absorbed.

Furthermore, in order to arrange the circuit board on the back of the curved display panel, the distortion that occurs when bending a wiring board whose cross section has an arc shape is more easily achieved. It can be absorbed and bend easily. In addition, the distortion caused by the bending is more reliably prevented from reaching the connection portion on the panel side or the connection portion on the circuit board side, so that the wiring board, the curved display panel, and the circuit board can be connected to each other. This facilitates connection, and also reliably prevents unreasonable stress from remaining on the panel-side connection part and the circuit board-side connection part.

Further, the wiring board according to the present invention is characterized in that the curved surface display panel is a curved surface liquid crystal panel.

According to the present invention, there is provided a wiring board capable of exhibiting the above-mentioned effects in connection between a curved display liquid crystal panel and a circuit board.

Further, a liquid crystal display device according to the present invention is characterized in that the liquid crystal display device is formed by connecting the curved display liquid crystal panel and the circuit board.

ADVANTAGE OF THE INVENTION According to this invention, a wiring board and a curved surface display liquid crystal panel and a circuit board are ensured, and almost no stress is left in the panel side connection part and the circuit board side connection part of a wiring board. Connection. Therefore, the reliability of the liquid crystal display device can be improved.

Further, an electronic apparatus according to the present invention includes the above-described liquid crystal display device, and a power supply circuit for supplying power to the liquid crystal display device.

According to the present invention, as described above, since the electronic device uses a highly reliable liquid crystal display device, a highly reliable electronic device can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a liquid crystal display device is formed by connecting a curved display liquid crystal panel and a circuit board using the wiring board of the embodiment.

Fig. 2 shows the circuit board curved surface display by bending the wiring board of Fig. 1. FIG. 3 is a perspective view showing the liquid crystal display device in a state where the liquid crystal display device is located on the back surface of the panel. FIG. 3 is a schematic exploded perspective view of a mobile phone incorporating the liquid crystal display device of the embodiment.

FIG. 4 is a schematic cross-sectional view of a mobile phone incorporating the liquid crystal display device of the embodiment.

FIG. 5 is a plan view showing another embodiment of the wiring board. FIG. 6 is a plan view showing another embodiment of the wiring board.

FIG. 7 is a plan view showing another embodiment of the wiring board.

[Best mode for carrying out the invention]

(First Embodiment)

FIG. 1 shows a liquid crystal display device 150 formed by connecting a curved display liquid crystal panel 30 and a flat circuit board 50 using the flexible wiring substrate 10 of the present embodiment. FIG. 4 is a perspective view showing a state in which it is performed. As is clear from the figure, the curved display liquid crystal panel 30 of the present embodiment is curved by drawing an arc so that its longitudinal direction, that is, the center in the width direction, is convex. are doing. In addition, the liquid crystal display device 150 of the present embodiment is equipped with a drive circuit for driving the curved display liquid crystal panel 30 as shown in the arrows of FIG. 1 and FIG. Since the circuit board 50 is disposed on the back of the curved display liquid crystal panel 30, the wiring board 10 is assembled in a bent state into a mobile phone, which is an electronic device of the present embodiment, in a bent state. FIG. 3 is an exploded perspective view schematically showing a mobile phone 130 incorporating the liquid crystal display device 150, and FIG. 4 is a perspective view showing the liquid crystal display device 150 of the mobile phone 130. It is a schematic cross-sectional view through 0. Note that the mobile phone 130 naturally has a power supply circuit (not shown) for supplying power to each circuit on the main circuit board 134.

As shown in FIG. 1, the wiring board 10 includes a terminal 32 provided in the width direction near the curved edge of the curved display liquid crystal panel 30, and a curved display liquid crystal 30. It is connected to a terminal 52 provided in the width direction near the edge of the circuit board 50 disposed on the back of the panel 30. Wiring board 10 and each end The connection with the elements 32 and 52 is made by thermal fusion via a bonding agent that becomes an anisotropic conductive film. The wiring board 10 is formed in a band shape, and the wiring pattern 15 is formed by integrally covering the wiring pattern 15 with a polymer film, for example, a polystyrene film. Yes.

In FIG. 1, wiring is provided only on the left side of the wiring board 10. It is obvious that the turn 15 is described, but the wiring turn 15 is formed over the entire wiring board 10 as a matter of course.

In addition, the width of the wiring board 10 increases as the distance from the panel-side end connection section 12 connected to the terminal 32 of the panel 30 increases. The width decreases, and the width becomes constant around the middle between the panel-side connection portion 12 and the circuit-board-side connection portion 14, and continues to the circuit-board-side connection portion 14. Therefore, the wiring board 10 of the present embodiment has a curved display liquid crystal panel, a panel-side connection section 12 connected to the terminal 32 of the panel 30, and a terminal 52 of the circuit board 50. There is a portion narrower than the width of the panel side connection portion 12 between the circuit board side connection portion 14 to be connected.

As described above, the wiring board 10 has its panel-side connection portion 12 connected to and traversed by the terminal 32 provided over the curved edge of the curved display liquid crystal panel 30. The surface has an arcuate shape, and its circuit board side connection part 14 is connected to the terminal 52 provided on the edge of the flat plate-shaped circuit board 50 and has a linear cross section. Therefore, the wiring board 10 is distorted. This distortion almost occurs in a narrow portion where the width is small and the portion is easily bent. Accordingly, the terminal 32 provided over the curved edge of the curved display liquid crystal panel 30 and the panel 30 and the flat edge of the flat circuit board 50 are provided. By connecting to the terminal 52, the distortion generated in the wiring board 10 is absorbed in a portion narrower than the width of the panel-side connection portion 12. In other words, this part is easily used as a buffer area. Therefore, such distortion hardly extends to the panel-side connection portion 12 and the circuit-board-side connection portion 14 of the wiring board 10, and the wiring board 1 can be easily and securely connected. 0 for curved display LCD. It can be connected to the cell 30 and the circuit board 50. In addition, a portion narrower than the width of the panel-side connection portion 12 is easily distorted, so that the panel-side connection portion 12 of the wiring board 10 and the circuit-board-side connection portion 14 It can also prevent the remaining stress in the steel. As a result, the wiring board 10 enables a highly reliable connection between the curved display liquid crystal panel 10 and the circuit board 50. ·

Furthermore, the liquid crystal display device 150 formed by connecting the curved display liquid crystal panel 30 and the circuit substrate 50 by the wiring substrate 10 also has the same structure as the wiring substrate 10. The connection with the curved display liquid crystal panel and the circuit board has high reliability. A drive circuit for driving the curved surface display liquid crystal panel 30 is mounted on the circuit board 50.

In addition, the circuit board 50 of the present embodiment is arranged on the back of the curved display liquid crystal panel 30 and incorporated in the mobile phone 130. At this time, the wiring board 10 connecting the curved display liquid crystal panel 30 and the circuit board 50 is bent, and the circuit board 50 is disposed on the back of the curved display liquid crystal panel 30. . Therefore, the wiring board 10 having a cross-sectionally curved shape connected to the curved terminal 32 of the curved display liquid crystal panel 30 is bent. As a result, uneven distortion occurs in the wiring board 10. This distortion is no. A portion narrower than the width of the connection portion 12 on the side of the cell is apt to bend due to the narrow width, so it occurs almost anywhere, and the wiring board 10 is easily bent. Is possible. In addition, the distortion force ⁵ ′ generated by bending the wiring board 10 is absorbed by the narrow portion and reaches the connection portion 14 on the circuit board side. Since there are few components, it is possible to easily and reliably connect the wiring board 10 to the terminal 32 of the curved display liquid crystal panel 30 or the terminal 52 of the circuit board 50. Further, no excessive stress is left on the connection portion 12 on the cell side or the connection portion 14 on the circuit board side. It should be noted that the narrower the width, the more effective the narrower it is.However, if it is too narrow, it is difficult to form the wiring pattern 15, so it is adjacent. Wiring notch 15 width 15 m or more It is necessary to leave enough width to be taken.

(Second embodiment)

FIG. 5, FIG. 6, and FIG. 7 are plan views each showing another embodiment of the wiring board 10.

The wiring board 60 shown in FIG. 5 is similar to the wiring board 10 shown in FIG. The connection 12 on the side of the cell is connected to the terminal 3'2 of the LCD panel 30 on the curved surface, and the connection 14 on the side of the circuit board is connected to the terminal 52 of the circuit board 50 ₍ this wiring The board 60 has a narrow portion, that is, a narrow portion 62 in the middle between the panel-side connection portion 12 and the circuit board-side connection portion 14. The constricted portion 62 is narrower than the width of the panel-side connection portion 12 and the circuit board-side connection portion 14. The constricted portion 62 is described above with reference to FIG. Like the narrow portion of the wiring board 10, it functions as a buffer region, and has the above-described effects.

In addition to this, the narrowed portion 62 is narrower than both the connection portion 12 and the connection portion 14 on the wiring board, so that the wiring is narrow. The distortion generated in the substrate 60 is concentrated on the constricted portion 62 (accordingly, such a distortion is caused by the connection side of the wiring substrate 60 on the cell side). 1 2 and the connection portion 14 on the circuit board side, and the possibility of stress remaining on the connection portion 12 on the panel side and the connection portion 14 on the circuit board side can be reduced. ₍ The bending of the flexible wiring board 60 required when the circuit board 50 is arranged on the back of the curved display liquid crystal panel 30 is narrow due to its narrow width. This occurs at and near the constricted portion 62, which makes it easy to bend the wiring board 60. This distortion is absorbed in the vicinity of the constricted portion 62, so that the panel-side connection portion 12 and the circuit-board-side connection portion 14 of the flexible wiring board 60 are surely curved display liquid crystal. It can be connected to the terminals 30 and 52 of the panel 30 and the circuit board 50. Unreasonable stress may be applied to the panel side connection part 12 and the circuit board side connection part 14. Can be more reliably prevented. Note that the smaller the width of the constricted portion 62 is, the more effective the force is. However, if it is too narrow, it will be difficult to form a wiring pattern.Therefore, the width of the adjacent wiring, the turn 15 of 15 m or more, will be more than 15 m. It is necessary to keep the width. ·

The wiring board 70 shown as a plan view in FIG. 6 is similar to the wiring board 10 shown in FIG. 1 in that the panel-side connection part 12 is a terminal of the curved display liquid crystal panel '30. And the circuit board side connection section 14 is connected to the terminal 52 of the circuit board 50.

This wiring board 70 includes a plurality of slits arranged in the width direction in the middle between the connection section 12 on the side of the nose and the connection section 14 on the circuit board side. 72 are provided. The area provided with the plurality of slits 72 (hereinafter, referred to as the slit area 74) is provided with the slit 72 which is a space. This makes it easier to deform, so it is possible to absorb such distortion. In other words, the slit region 74 acts as a buffer region similarly to the narrow portion of the wiring board 10 described above with reference to FIG. 1 and has the above-described effects. .

In particular, in the case of the wiring board 70 having the slit region 74, the deformed portion is dispersed over the entire width of the wiring board 70, and the length of the slit 72 is in the longitudinal direction. As a result, the distortion is not concentrated on the slit area 74, that is, a part of the buffer area, and is generated as a whole. Therefore, even when a large strain is applied to the wiring board 70, the slit region 74 can easily absorb the strain.

The wiring board 80 shown as a plan view in FIG. 7 also has a curved display liquid crystal panel 30 in which the connecting portions 12 are similar to the wiring board 10 shown in FIG. And the circuit board side connection section 14 is connected to the terminal 52 of the circuit board 50.

Similar to the above-described wiring board 70 shown in FIG. 6, the wiring board 80 has a width in the middle between the panel-side connection section 12 and the circuit-board-side connection section 14. It has a region in which a plurality of slits 72 arranged in the direction are provided, that is, a slit region 74. This wiring board 80 is characterized in that a plurality of slits 72 extending in the width direction thereof are provided as a slit region 74 provided with 22 rows, that is, a buffer region. 6 Differs from the wiring board 70 shown in FIG.

Since the wiring board 80 has the two rows of the slit regions 74 as described above, the wiring board 80 has a much larger length than the wiring board 70 described above. It can be easily deformed over the range in the direction, and the strain generated in the wiring board 80 can be more easily absorbed. What power? Therefore, the effect of the wiring board 70 shown in FIG. 6 described above can be more reliably achieved.

The more slits, the more effective, and the more, the more wiring. Since the area for forming a turn is reduced and it becomes difficult to form a wiring pattern, the width of the adjacent wiring, 'turn 15', has a width of 15 m or more. It is necessary to ensure that a certain amount of top width remains between adjacent slits.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, but is within the scope of the gist of the present invention or the equivalent scope of the claims. Various modifications can be made.

For example, in each of the above-described embodiments, a force た showing an example in which a wiring board is used to connect a curved surface display liquid crystal panel to a circuit board is used. It goes without saying that it can also be used for connection between a plasma panel and a circuit board.

Further, in each of the above embodiments, in order to dispose the circuit board on the back surface of the curved display liquid crystal panel, a force ′ showing an example of bending the wiring board, and the circuit board and the curved display liquid crystal panel are arranged. You can place them so that the wiring board does not bend.

Further, in the examples shown in FIGS. 1 and 5, the side portions of the wiring board are straight. Force indicating the case where the width of the wiring board is changed by drawing the shape combining the lines The side of the wiring board may draw an arbitrary curve ₍ In the example of the wiring board having a plurality of slits shown in FIGS. 6 and 7, three or three slits are arranged in one row in the width direction of the wiring board. Forces showing the example of four formations The number of slits formed in one line can be any number as needed. In the example shown in the above example, one or two rows are provided as rows in which a plurality of slits are arranged in the width direction of the wiring board. In addition, in these examples, the force is shown when the shape of each slit is rectangular, and the shape of each slit is Oval, that Ki out and the child be any shape such as a triangle.

Also, the above-described embodiment with a force ^s that shows the mobile phone as an example of electronic equipment incorporating a liquid crystal display device, the Yo will Do electronic devices of this, watch, page turbocharger, an electronic organizer, a calculator, POS terminals , IC card, CD player, etc.

Claims

The scope of the claims

1. A terminal provided in the width direction near the curved edge of the curved surface display panel, and a terminal arranged in the width direction near the edge of the circuit board arranged near the curved surface display panel. A flexible wiring board for connecting terminals provided across

A buffer region for absorbing distortion is provided between a panel-side connection portion connected to a terminal of the curved surface display panel and a circuit board-side connection portion connected to a terminal of the circuit board. Features a wiring board.

2. A terminal provided in the width direction near the curved edge of the curved surface display panel, and a terminal provided in the width direction near the edge of the circuit board arranged near the curved surface display panel. A flexible wiring board for connecting terminals provided over

A portion narrower than the width of the panel-side connection portion is provided between the panel-side connection portion connected to the terminal of the curved display panel and the circuit-board-side connection portion connected to the terminal of the circuit board. A wiring board characterized by:

3. The wiring board according to claim 2, wherein a portion narrower than the width of the circuit board side connection portion is provided between the panel side connection portion and the circuit board side connection portion. A wiring board characterized by the fact that:

4. Terminals provided in the width direction near the curved edge of the curved display panel, and in the width direction near the edge of the circuit board arranged in the vicinity of the curved display panel. A flexible wiring board for connecting the terminal provided with

A plurality of switches arranged across the width direction between a panel-side connection portion connected to the terminal of the curved surface display panel and a circuit board-side connection portion connected to the terminal of the circuit board. A wiring board characterized by having a lip.

5. The wiring board according to claim 4, wherein the plurality of slits includes a plurality of rows.

6. The wiring board according to any one of claims 1 to 5, wherein the curved display panel is a curved liquid crystal panel.

7. The liquid crystal display device according to claim 8, wherein the wiring substrate according to claim 6 is used to connect the curved display liquid crystal panel and the circuit board. An electronic device, comprising: a liquid crystal display device; and a power supply circuit for supplying power to the liquid crystal display device.