JP2009104801A - Liquid crystal module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal module with a built-in flexible wiring board improved for mounting an LED configured to change the shape or the number of mounting of the LEDs. <P>SOLUTION: In the liquid crystal module having the LEDs 8 mounted on the flexible wiring board 10 arranged along an end face of a light guide plate 3, with a reflective sheet 2 superposed on a rear face of the light guide plate 3, as well as optical sheets 4, 5 and a liquid crystal panel 6 superposed on a front face of the light guide plate 3, the flexible wiring board 10 is structured by connecting a T-shaped flexible wiring divided piece 11 for power source and at least one rectangular flexible wiring divided piece 12 for LED mounting. By varying the number of the flexible wiring divided pieces 12 for LED mounting connected to either side of the T-shaped flexible wiring divided pieces 11 for power source, the shape of the flexible wiring board 10 can be changed either to a T-shape, an irregular T-shape, or a substantial L-shape, and at the same time, the mounting number of the LEDs can also be changed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a side edge light type liquid crystal module incorporated in a mobile phone, a digital still camera, an ink jet printer, and other devices, and more particularly, to a liquid crystal module having an improved flexible wiring board on which LEDs are mounted.

  As shown in FIG. 8, a conventional small liquid crystal module of a general side edge light type has a plurality of LEDs 8 mounted on a T-shaped flexible wiring board 100 arranged along the end face of the light guide plate 3 and is flexible. A pair of power supply terminals 11c and 11d of the wiring board 100 are connected to a light source terminal of a main flexible wiring board (not shown) drawn from a liquid crystal panel (not shown), and light incident on the light guide plate 3 from the LED 8 is received. The light guide plate 3 is configured to irradiate from the front surface of the liquid crystal panel.

  In such a liquid crystal module, when the position at which the main flexible wiring board is pulled out is changed, the main light source terminal and the power terminals 11c and 11d of the T-shaped flexible wiring board 100 can be overlapped and connected. It is necessary to use an irregular T-shaped flexible wiring board in which the vertical belt portion 100a with the power supply terminals 11c and 11d is displaced to one side in accordance with the position where the flexible wiring board is drawn out. It may be necessary to use a flexible wiring board.

  On the other hand, the first flexible substrate and the second flexible substrate are integrated by connecting the second flexible substrate with a branch portion that extends from the first flexible substrate and is folded in two places. Panel-side terminals 11 and connector-side terminals are provided on the back surface of the flexible substrate, light-emitting elements are mounted on the back surface of the second flexible substrate, and the light-emitting element mounting region of the second flexible substrate is the panel-side terminal of the first flexible substrate. A liquid crystal module arranged in an overlapping area with the connecting portion of the liquid crystal has been proposed (Patent Document 1).

  Moreover, the flexible printed cable lighting conducting wire connected to the LED facing the liquid crystal cell is composed of a conducting wire body with LED and an extension line integrally connected to the conducting wire body in a straight line. By bending the boundary portion, the extension line is arranged opposite to the conductor body with an opposing angle α approximately perpendicular to the conductor body, and the end part of the extension line is made the end part of the cell drive conductor by bending the center part of the extension line. A liquid crystal display device connected to is also proposed (Patent Document 2).

Furthermore, a light emitting diode array in which light emitting diode connection terminals are arranged at equal intervals and in a straight line on the surface side of the flexible substrate, and a surface mount type light emitting diode is connected to the surface side of the flexible substrate has been proposed. In addition, it is disclosed that the light emitting diode arrays are connected to each other at an end portion to form a long linear array (Patent Document 3).
JP 2007-133302 A JP 2007-127742 A Japanese Patent Laid-Open No. 2002-232009

  However, in the conventional liquid crystal module in which the LED 8 is mounted on the T-shaped flexible wiring board 100 as shown in FIG. 8 and arranged on the end face of the light guide plate 3, as described above, the position where the main flexible wiring board is drawn out. Will change, it will be necessary to use an irregular T-shaped flexible wiring board or L-shaped flexible wiring board that matches it, and each time a new flexible wiring board must be designed and manufactured. There was a problem of incurring a cost increase. Further, when the number of LEDs 8 to be mounted is changed, there is a problem in that the cost is similarly increased because a flexible wiring board in which the wiring pattern is changed correspondingly must be newly designed and manufactured.

  Further, in the liquid crystal module of Patent Document 1 and the liquid crystal display device of Patent Document 2, when the number of light emitting elements (LEDs) is changed, a flexible substrate having a changed wiring pattern is newly designed and manufactured. Since it is necessary, there is still a problem that the cost is increased.

  On the other hand, the light-emitting diode array of Patent Document 3 can constitute a long linear array by connection, but constitutes a T-shaped array or an irregular T-shaped array having a power supply terminal in the middle thereof. In addition, since a plurality of light emitting diodes are mounted on one light emitting diode array, the number of light emitting diodes cannot be increased or decreased one by one. It cannot be adopted.

  The present invention has been made under the above circumstances, and a problem to be solved is to provide a liquid crystal module in which a flexible wiring board for LED mounting is improved and incorporated so that the shape and the number of mounted LEDs can be changed. There is.

  In order to solve the above problems, a liquid crystal module according to the present invention includes an LED mounted on a flexible wiring board, disposed along an end surface of a light guide plate, and a reflective sheet is provided on the rear surface of the light guide plate, and an optical sheet and a liquid crystal. In the liquid crystal module provided with the panel overlaid on the front surface of the light guide plate, the flexible wiring board is configured by connecting a flexible wiring division piece for power supply and one or more flexible wiring division pieces for LED mounting. It is what.

  Specifically, the power supply flexible wiring segment has a T-shaped planar shape, and a pair of connection lands are provided at both ends of the horizontally long strip portion, and a pair of power terminal lands are provided on the vertically long strip portion. On the other hand, the flexible wiring divided piece for LED mounting has a rectangular planar shape, a connection land is provided at both ends thereof, and a pair of LED mounting lands are provided at the center. The flexible wiring board for LED mounting of the liquid crystal module is obtained by soldering the flexible wiring board for power supply and one or more flexible wiring board pieces for mounting LED at soldering lands for connecting each of the split pieces. It is configured.

  More specifically, a pair of connection lands are provided on one surface of one end of the horizontally long strip portion of the flexible wiring segment for power supply, and a pair of connection lands are provided on the opposite surface of the other end of the horizontally long strip portion. On the other hand, a pair of connection lands are provided on one side of one end of the flexible wiring divided piece for LED mounting, and a pair of connection lands are provided on the other side of the flexible wiring divided piece for LED mounting. The power supply flexible wiring segment and one or more LED mounting flexible wiring segments are separated from the connection land on one side of each segment by sandwiching the solder paste. The flexible wiring board for LED mounting of the liquid crystal module is configured by being thermocompression-bonded and connected at the overlapped portion. Than is.

  In such a flexible wiring board for LED mounting of a liquid crystal module, a flexible wiring board for power supply so that either one of the power terminal land and the LED mounting land is on one side and the other is on the opposite side. It is preferable that one or more flexible wiring division pieces for LED mounting are connected. In particular, a pair of LED mounting lands are provided on one side of the center of the horizontally long belt-shaped portion, and a flexible wiring divided piece for power supply having a pair of power terminal lands on the opposite surface of the vertically long belt-shaped portion, and a pair of LEDs on one surface. It is preferable that one or more flexible wiring divided pieces for LED mounting provided with mounting lands are connected by a connection land for each divided piece.

  The most specific and preferable LED mounting flexible wiring board of the liquid crystal module according to the present invention has a flexible wiring dividing piece for power supply and a pair of connection lands provided on one side at one end of the horizontally long strip-shaped portion. A pair of connecting lands provided on the opposite surface of the other side of the horizontally long belt-like portion, a pair of LED mounting lands provided on one side thereof in the center of the horizontally long belt-like portion, and a surface opposite to the vertically long belt-like portion. A pair of power terminal lands, one connection land at one end of the horizontally long strip portion, one LED mounting land, one power terminal land, and one connection at the other end of the lateral strip portion The land is electrically connected by the conductor pattern, and the other connecting land at one end of the horizontally long strip portion, the other LED mounting land, the other power terminal land, and the horizontally long strip portion The other connecting land at the end is made conductive by the conductive pattern, while the flexible wiring divided piece for LED mounting has a pair of connecting lands provided on one side at one end of the divided piece, the divided piece, etc. A pair of connection lands provided on the opposite surface at the end and a pair of LED mounting lands provided on the one surface at the center of the split piece, one connection land at one end of the split piece, and one LED The mounting land and one connection land at the other end of the split piece are electrically connected by the conductive pattern, and the other connection land at one end of the split piece, the other LED mounting land, and the other at the other end of the split piece These connection lands are made conductive by the conductive wire pattern.

  As in the liquid crystal module of the present invention, the flexible wiring board on which the LED is mounted is configured by connecting the flexible wiring divided piece for power supply and one or more flexible wiring divided pieces for LED mounting. The shape of the flexible wiring board and the number of LEDs to be mounted can be changed depending on the method and the number of LED mounting flexible wiring division pieces to be connected.

  That is, the power supply flexible wiring segment has a T-shaped planar shape, and a pair of connection lands are provided at both ends of the horizontally long strip portion, and a pair of power terminal lands are provided on the vertically long strip portion. On the other hand, the flexible wiring segment for LED mounting has a rectangular planar shape, and connection lands are provided at both ends, and a pair of LED mounting lands are provided at the center. For example, by arranging the same number of flexible wiring divided pieces for LED mounting at both ends of the horizontally long strip portion of the flexible wiring divided piece for power supply and soldering the connecting lands of each divided piece to each other A T-shaped flexible wiring board can be produced in which the vertically elongated strip portion provided with the power terminal land of the flexible wiring segment for power supply is located on the center line. Or to increase or decrease the number of connections LED mounted flexible wiring divided pieces, by selecting the LED mounted flexible wiring dividing piece that implements the LED, the mounting number of the LED can be freely changed. And when the number of flexible wiring segment pieces for LED mounting connected to one end of the horizontally long strip portion of the flexible wiring segment piece for power supply and the number of flexible wiring segment pieces for LED mounting connected to the other end of the horizontally long strip portion are different. An irregular T-shaped flexible wiring board can be produced in which a vertically long strip portion provided with a power terminal land of a flexible wiring divided piece for power supply is displaced from the center line to one side. When one or more LED-mounted flexible wiring segment pieces are connected to only one end of one of the horizontally long strip portions, a substantially L-shaped flexible wiring in which the longitudinal strip portion of the power source flexible wiring segment piece is located at the other end A plate can be made.

  Therefore, even if the position of the main flexible wiring board drawn out from the liquid crystal panel is changed, the light source terminal of the main flexible wiring board and the power terminal land of the vertically long strip portion of the power supply flexible wiring division piece can be overlapped and connected. Thus, the flexible wiring board for LED mounting can be dealt with by changing the shape of the flexible wiring board for LED mounting to any of T shape, irregular T shape, and substantial L shape. It is no longer necessary to design and manufacture the device, and the cost can be reduced accordingly. In addition, even if the number of LEDs mounted is changed, it can be easily handled by changing the number of connections of LED mounting flexible wiring segments or selecting the LED mounting flexible wiring segments to mount LEDs. In addition, it becomes unnecessary to design and manufacture a flexible wiring board for LED mounting, and the cost can be reduced accordingly. In addition, when the number of LEDs mounted can be freely changed in this way, it can be used extremely effectively even when the optimum number of LEDs mounted is examined.

  Also, as described above, the power supply flexible wiring segment and one or more LED mounting flexible wiring segments are overlapped with the soldering paste between one side connection land and the other side connection land. What is connected by thermocompression bonding at the combined portion is easy to connect each divided piece, and can efficiently produce a flexible wiring board for LED mounting.

  Then, connect the flexible wiring segment for power supply and one or more flexible wiring segments for LED mounting so that either the power terminal land or the LED mounting land is on one side and the other is on the opposite side. In general, the main flexible wiring board of the liquid crystal panel is drawn out on the side opposite to the LED mounting surface, so that the power terminal land is flexible without folding the vertical strip of the power flexible wiring segment. It is possible to overlap and connect to the light source terminal of the wiring board.

  Furthermore, a pair of LED mounting lands are provided at the center of the horizontally long strip portion of the power flexible wiring segment, and a pair of power terminal lands are provided on the opposite side of the vertically strip portion. A flexible wiring board for LED mounting was prepared by connecting a LED wiring flexible wiring segment having a pair of LED mounting lands on one side, and the power terminal land was used as the light source terminal of the main flexible wiring board. In addition to being easy to connect to, there is an advantage that the flexible wiring divided piece for power supply can be used as the flexible wiring divided piece for LED mounting.

  The most specific and preferable flexible wiring board for LED mounting described above has all the effects described above, and a liquid crystal module incorporating such a flexible wiring board is extremely low in cost and manufacturing. It is advantageous.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

  1 is an exploded perspective view of a liquid crystal module according to an embodiment of the present invention, FIG. 2 is a partial cross-sectional view of the liquid crystal module, and FIG. 3 is a bottom view of a flexible wiring board for LED mounting incorporated in the liquid crystal module. 4 is a bottom view showing another example of the flexible wiring board for LED mounting, FIG. 5 is a bottom view of the flexible wiring divided piece for power supply, FIG. 6 is a bottom view of the flexible wiring divided piece for LED mounting, and FIG. It is sectional drawing of the connection part of a flexible wiring division piece and the flexible wiring division piece for LED mounting.

  The overall structure of the liquid crystal module will be described. As shown in FIGS. 1 and 2, a synthetic resin light guide plate 3 excellent in transparency is fitted inside a rectangular frame-shaped synthetic resin rear frame 1. On the rear surface (lower surface) of the light guide plate 3, a reflective sheet 2 having a high light reflectance is provided in an overlapping manner. A plurality (three in this embodiment) of LEDs 8 mounted on one side (lower surface) of the T-shaped flexible wiring board 10 are arranged on one end surface of the light guide plate 3. The flexible wiring board 10 will be described in detail later.

  On the front surface (upper surface) of the light guide plate 3, a light diffusion sheet 4 and two prism sheets 5 and 5 are provided as an optical sheet so as to overlap each other, and a liquid crystal panel is interposed in front of (above) spacers 9a and 9b. 6 are provided in an overlapping manner. Then, a rectangular frame-shaped metal bezel 7 is externally fitted from the front (upper side) of the liquid crystal panel 6 via a masking tape 13, and the respective engaging claws 1a formed on the side surface of the rear frame 1 are bezeled. 7 are integrally assembled so as not to be separated by being engaged with respective engaged ports 7a formed on the side surfaces of the members 7.

  The main flexible wiring board 14 connected to the connector part of the liquid crystal panel 6 is drawn to the outside from a lead part 7b formed at the center of one side of the bezel 7, and the connecting part of the flexible wiring board 14 is an insulating tape. 15 is covered. Then, the vertically long strip portion 11a of the flexible wiring board 10 for LED mounting is drawn to the outside from the lead portion 1b formed at the center of one side of the rear frame 1, and is provided on the upper surface of the vertically long strip portion 11b. The pair of power source terminal lands 11 c and 11 d and the pair of light source terminals 14 a and 14 b provided on the lower surface of the main flexible wiring board 14 are soldered and covered with an insulating tape 16.

  A major feature of this liquid crystal module is the flexible wiring board 10 for LED mounting. That is, as shown in FIG. 3, the flexible wiring board 10 is configured by connecting a flexible wiring divided piece 11 for power supply and one or more (two in this embodiment) flexible wiring divided pieces 12 for LED mounting. As shown in FIGS. 3 and 5, the power supply flexible wiring segment 11 has a T-shaped planar shape composed of a horizontally long strip portion 11a and a vertically long strip portion 11b. As shown in FIGS. 3 and 6, the mounting flexible wiring segment 12 has a rectangular planar shape having the same width as that of the horizontally long strip portion 11 a of the power flexible wiring segment 11.

  The flexible wiring segment 11 for power supply is a segment having a two-layer wiring structure having a two-layer wiring pattern surface covered with an insulating film. As shown in FIG. A pair of connection lands 11e and 11f are provided on one surface (the front surface in FIG. 5) at one end (the right end in FIG. 5), and the opposite surface (the left end in FIG. 5) is the opposite surface (the left end in FIG. 5). A pair of connection lands 11g and 11h are also provided on the back surface in FIG. Then, a pair of LED mounting lands 11i, 11j is provided on one side (the front surface in FIG. 5) at the center of the horizontally long strip portion 11a so that the flexible wiring divided piece 11 for power supply can be shared as the flexible wiring divided piece for LED mounting. The pair of power terminal lands 11c and 11d are provided on the opposite surface (the back surface in FIG. 5) of the vertically long strip portion 11b. Each of these lands is provided by removing the insulating film and exposing the wiring pattern surface. 3 to 6 are bottom views, the one side (front surface) of each of the divided pieces 11 and 12 in FIGS. 3 to 6 actually means the lower surface of each of the divided pieces 11 and 12. The opposite surface (back surface) actually means the upper surface.

  One connection land 11e, one LED mounting land 11i, one power supply land 11c, and one connection land 11g at the other end of the horizontal strip 11a are connected to the conductive pattern 11k. The conductive wire pattern 11k is transferred from one surface (front surface) to the opposite surface (back surface) through a through hole 11m between the LED mounting land 11i and the power terminal land 11c. Further, the other connection land 11f at one end of the horizontal strip 11a, the other LED mounting land 11j, the other power terminal land 11d, and the other connection land 11h at the other end of the horizontal strip 11a are electrically conductive. The conductive patterns 11n are connected to each other by a pattern 11n. The lead pattern 11n is formed between a through hole 11p between the LED mounting land 11j and the power terminal land 11d, and between the LED mounting land 11j and the connection land 11h. In the through hole 11q, the surface is shifted from one surface (front surface) to the opposite surface (back surface) and extends to the power terminal land 11d and the connection land 11h.

  The LED mounting flexible wiring segment 12 is also a segment having a two-layer wiring structure, and as shown in FIG. 6, at one end (the right end in FIG. 6) of one side of the segment (the front surface in FIG. 6) A pair of connection lands 12a and 12b are provided, and a pair of connection lands 12c and 12d are also provided on the other surface (the left end in FIG. 6) of the split piece on the opposite surface (the back surface in FIG. 6). . A pair of LED mounting lands 12e and 12f are provided on one side (the front surface in FIG. 6) of the split piece.

  One connection land 12a at one end of the split piece, one LED mounting land 12e, and one connection land 12c at the other end of the split piece are electrically connected to each other by a lead pattern 12g. A through hole 12h between the LED mounting land 12e and the connection land 12c at the other end of the split piece transitions from one surface (front surface) to the opposite surface (back surface) and extends to the connection land 12c. The other connection land 12b at one end of the split piece, the other LED mounting land 12f, and the other connection land 12d at the other end of the split piece are electrically connected to each other by the lead pattern 12i. The through-hole 12j between the LED mounting land 12f and the connection land 12d at the other end of the divided piece moves from one surface (front surface) to the opposite surface (back surface) and extends to the connection land 12d.

  As shown in FIG. 3, the T-shaped flexible wiring board 10 for mounting LED has LED mounting flexible wiring divided pieces 12 and 12 arranged on both sides of the horizontally long strip portion 11 a of the power supply flexible wiring divided piece 11. 7, the connecting lands 11e, 11f at one end of the horizontally long strip portion 11a and the connecting lands 12c, 12d at the other end of one LED mounting flexible wiring segment 12 are overlapped with the solder paste 17 therebetween. The overlapping portions are thermocompression bonded, and the connection lands 11g and 11h at the other end of the horizontally long strip portion 11a and the connection lands 12a and 12b at the other end of the flexible wiring divided piece 12 for LED mounting are similarly thermocompressed and connected. It was produced by this.

  When the flexible wiring divided piece 11 for power supply and the two flexible wiring divided pieces 12 and 12 for LED mounting are connected as described above, the flexible wiring board 10 having the lighting circuit that can be mounted by connecting the LEDs 8 in parallel is produced. When the LED 8 is mounted on the LED mounting lands 12e, 12f of the LED mounting flexible wiring division pieces 12, 12 on both sides by soldering, it can be used as a two-lamp type flexible wiring board, and the flexible wiring division for power supply When the LED 11 is mounted on the LED mounting lands 11i and 11j of the flexible wiring divided piece 11 for power supply while sharing the piece 11 as the flexible wiring divided piece for LED mounting, it can be used as a three-lamp type flexible wiring board. it can. The T-shaped flexible wiring board 10 has an LED 8 mounted on one surface (front surface, actually the lower surface) and power terminal lands 11c and 11d on the opposite surface (back surface, actually the upper surface). Therefore, as described above, the power terminal lands 11c and 11d can be easily soldered by overlapping the light source terminals 14a and 14b on the lower surface of the main flexible wiring board 14 without folding the vertically long strip portion 11b. can do.

  As described above, when the flexible wiring board 10 for LED mounting is obtained by connecting the T-shaped flexible wiring segment 11 for power supply and one or more flexible wiring segments 12 for LED mounting, The shape of the flexible wiring board 10 and the number of LEDs 8 to be mounted can be changed depending on the number of LED mounting flexible wiring division pieces 12 to be connected. For example, in the case where the same number of LED mounting flexible wiring segment pieces 12 are arranged at both ends of the horizontally long strip portion 11a of the power source flexible wiring segment 11 and the connection lands of each segment are soldered as described above Can produce the T-shaped flexible wiring board 10 in which the vertically long strip portion 11b provided with the power terminal lands 11c, 11d of the power flexible wiring segment 11 is located on the center line, and the power flexible wiring segmentation In the case where the number of LED mounting flexible wiring segment pieces 12 connected to both ends of the horizontally long strip portion 11a of the piece 11 is varied, the irregularity in which the vertical strip portion 11b of the power flexible wiring segment 11 is displaced from the center line to one side. T-shaped flexible wiring board can be produced. In addition, as shown in FIG. 4, when one or more LED mounting flexible wiring segment pieces 12 are connected to only one end (left end in FIG. 4) of the horizontally long strip portion 11a of the power source flexible wiring segment 11 A substantially L-shaped flexible wiring board 10 in which the vertically long strip-like portion 11b of the power supply flexible wiring segment 11 is located at the other end (the right end in FIG. 4) can be produced. In these cases, the number of LEDs 8 mounted can be freely changed by increasing or decreasing the number of connections of the LED mounting flexible wiring segments 12 or by selecting the LED mounting flexible wiring segments 12 on which the LEDs 8 are mounted. be able to.

  Therefore, even if the position of the main flexible wiring board 14 drawn out from the liquid crystal panel 6 is changed, the power sources of the light source terminals 14a and 14b of the main flexible wiring board 14 and the vertically long belt-like portion 11b of the power source flexible wiring dividing piece 11 are changed. In order to be able to connect the terminal lands 11c and 11d in an overlapping manner, the shape of the flexible wiring board 10 for LED mounting can be changed to any of T-shaped, irregular T-shaped, and substantially L-shaped. Therefore, it becomes unnecessary to newly design and manufacture a flexible wiring board for LED mounting, and the cost can be reduced accordingly. Further, even when the number of LEDs 8 mounted is changed, it can be easily handled by changing the number of connections of the LED mounting flexible wiring segment 12 or selecting the LED mounting flexible wiring segment 12 on which the LED 8 is mounted. Thus, it becomes unnecessary to newly design and manufacture a flexible wiring board for LED mounting, and the cost can be reduced accordingly. In addition, if the number of LEDs 8 mounted can be freely changed in this way, it can be used very effectively even when the optimal number of LEDs 8 to be mounted is examined at the development stage.

It is a disassembled perspective view of the liquid crystal module which concerns on one Embodiment of this invention. It is a fragmentary sectional view of the liquid crystal module. It is a bottom view of the flexible wiring board for LED mounting integrated in the liquid crystal module. It is a bottom view which shows the other example of the flexible wiring board for LED mounting. It is a bottom view of the flexible wiring division piece for power supplies. It is a bottom view of the flexible wiring division piece for LED mounting. It is sectional drawing of the connection part of the flexible wiring division piece for power supplies, and the flexible wiring division piece for LED mounting. It is explanatory drawing of the conventional liquid crystal module which mounted LED in the flexible wiring board and has arrange | positioned on the other surface of the light-guide plate.

Explanation of symbols

2 Reflective sheet 3 Light guide plate 4 Optical sheet (light diffusion sheet)
5 Optical sheet (prism sheet)
6 LCD panel 8 LED
DESCRIPTION OF SYMBOLS 10 Flexible wiring board for LED mounting 11 Flexible wiring division | segmentation piece 11a Horizontally long strip | belt part 11b Vertically long strip | belt-shaped part 11c, 11d Land for power supply terminals 11e, 11f, 11g, 11h Land for connection 11i, 11j LED mounting land llk, 11n Conductor Pattern 12 LED mounting flexible wiring segment 12a, 12b, 12c, 12d Connection land 12e, 12f LED mounting land 12g, 12i Conductor pattern 14 Main flexible wiring board 14a, 14b Light source terminal 17 Solder paste

Claims (6)

In the liquid crystal module in which the LED mounted on the flexible wiring board is disposed along the end surface of the light guide plate, the reflective sheet is provided on the rear surface of the light guide plate, and the optical sheet and the liquid crystal panel are provided on the front surface of the light guide plate.
A liquid crystal module, wherein the flexible wiring board is configured by connecting a flexible wiring divided piece for power supply and one or more flexible wiring divided pieces for LED mounting.   The flexible wiring segment for power supply has a T-shaped planar shape, and a pair of connection lands are provided at both ends of the horizontally long strip portion, and a pair of power terminal lands are provided at the longitudinal strip portion. On the other hand, the flexible wiring divided piece for LED mounting has a rectangular planar shape, a connection land is provided at both ends thereof, and a pair of LED mounting lands are provided at the center thereof. 2. The liquid crystal module according to claim 1, wherein the flexible wiring divided piece for soldering and the one or more flexible wiring divided pieces for LED mounting are solder-connected at connection lands of the divided pieces.   A pair of connection lands are provided on one side of one side of the horizontally long strip portion of the flexible wiring segment for power supply, and a pair of connection lands are provided on the opposite side of the other end of the lateral strip portion, A pair of connection lands are provided on one side of one end of the flexible wiring division piece for LED mounting, and a pair of connection lands are provided on the opposite side of the other end of the flexible wiring division piece for LED mounting. The flexible wiring segment for power supply and one or more flexible wiring segments for LED mounting are thermocompression bonded at the part where the connection land on one side and the connection land on the opposite side of each segment are overlapped with the solder paste in between. The liquid crystal module according to claim 2, wherein the liquid crystal modules are connected to each other.   The power supply flexible wiring segment and one or more LED mounting flexible wiring segments are connected so that either the power terminal land or the LED mounting land is on one side and the other is on the opposite side. The liquid crystal module according to claim 2, wherein the liquid crystal module is a liquid crystal module.   A pair of LED mounting lands is provided on one side of the center of the horizontally long strip portion, and a power supply flexible wiring segment having a pair of power terminal lands on the opposite side of the longitudinal strip portion, and a pair of LED mounting lands on one side. 5. The liquid crystal module according to claim 4, wherein one or more LED-mounting flexible wiring divided pieces provided with lands are connected by connection lands of the divided pieces.   A flexible wiring segment for power supply is a pair of connection lands provided on one side of one end of the horizontally long strip portion, a pair of connection lands provided on the opposite surface of the other end of the horizontally long strip portion, and a horizontally long strip shape. A pair of LED mounting lands provided on one side at the center of the portion, and a pair of power terminal lands provided on the opposite surface of the vertically long strip portion, one connection land at one end of the lateral strip portion, One LED mounting land, one power supply terminal land, and one connection land at the other end of the horizontally long strip portion are electrically connected by a conductor pattern, and the other connection land at one end of the horizontally long strip portion and the other The LED mounting land, the other power supply terminal land, and the other connecting land at the other end of the laterally long belt-shaped portion are made conductive by a conductor pattern, while the LED mounting flexi The split wiring piece is provided on one side of a pair of connection lands provided on one side of the split piece, a pair of connection lands provided on the opposite side of the other end of the split piece, and the center of the split piece. A pair of LED mounting lands, and one connection land at one end of the split piece, one LED mounting land, and one connection land at the other end of the split piece are electrically connected by a conductor pattern. 3. The other connection land at one end of the split piece, the other LED mounting land, and the other connection land at the other end of the split piece are electrically connected by a conductor pattern. The liquid crystal module according to claim 5.

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