JP2012230243A - Liquid crystal display module and liquid crystal display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display module capable of keeping the clearance between a light source and a light guide plate constant without separately installing a member for urging the light guide plate toward the light source.SOLUTION: The liquid crystal display module 20 comprises: a liquid crystal display cell 70; an LED 51; a light incident surface 53a consisting of a lateral edge surface which light enters from the LED 51; a light guide plate 53 which includes a first abutting part 61 and a second abutting part 62 provided at the lower end portion and which guides light entering the light incident surface 53a from the LED 51, into the liquid crystal display cell 70; and a support member which abuts on the abutting parts of the light guide plate 53 and supports the light guide plate 53 from below. At least one of the abutting parts and the support member has an inclined surface inclined so that the side of the light incident surface 53a of the light guide plate 53 is lowered, and the support member is configured to support the abutting parts of the light guide plate 53 so that the light guide plate 53 can move to the side of the LED 51 along the inclined surface by its own weight.

Description

  The present invention relates to a liquid crystal display module and a liquid crystal display device, and more particularly to a liquid crystal display module and a liquid crystal display device including a light guide plate having a light incident surface composed of a side end surface on which light is incident from a light source.

  2. Description of the Related Art Conventionally, a liquid crystal display module including a light guide plate having a light incident surface including a side end surface on which light is incident from a light source is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a liquid crystal display module including a rectangular light guide plate that guides light incident from an LED (light source) to a liquid crystal display panel, and a concave frame that houses and holds the light guide plate and the LED. Is disclosed. In this liquid crystal display module, an LED is fixed to the left inner surface of a frame having a rectangular frame shape, and the side end surface (left end surface) on the short side of the light guide plate is separated from the LED by a predetermined interval (clearance). It is accommodated in the frame so as to face in the lateral direction. A protrusion protruding outward is provided on the end surface on the long side of the light guide plate, and a recess corresponding to the protrusion of the light guide plate is formed on the inner side of the long side of the frame. The frame has an inner space that is slightly larger than the light guide plate in consideration of thermal expansion of the light guide plate. For this reason, when the light guide plate deviates in the direction approaching the LED, the protrusion of the light guide plate and the inner side surface of the recess of the frame come into contact with each other to position the light guide plate. Further, when the light guide plate is displaced in the direction away from the LED, the right end surface (the end surface opposite to the light incident surface) of the light guide plate and the inner side surface of the frame come into contact with each other to position the light guide plate. Thereby, it is comprised so that the position shift of the horizontal direction which opposes LED of a light-guide plate may be settled in the predetermined range.

JP 2005-302485 A

  However, in the liquid crystal display module described in Patent Document 1, when a position shift of the light guide plate occurs in the lateral direction facing the LED, a distance (clearance) between the LED and the light incident surface (left end surface) of the light guide plate. Changes. When such a liquid crystal display module is provided in a stationary liquid crystal display device, the external force does not act in the lateral direction of the liquid crystal display device (the direction in which the LED and the light incident surface of the light guide plate face each other). The clearance changes each time a deviation occurs. In this case, there is an inconvenience that the light incident efficiency to the light guide plate changes due to the change in the clearance, and as a result, the luminance of the liquid crystal display panel changes. As described above, the liquid crystal display module described in Patent Document 1 has a problem that the distance (clearance) between the light source and the light incident surface of the light guide plate cannot be kept constant. As a countermeasure against this, it is conceivable to separately provide a spring member or the like for biasing the light guide plate toward the light source. However, in this case, there arises a new problem that the structure becomes complicated accordingly.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a space between the light source and the light guide plate without separately providing a member for biasing the light guide plate toward the light source. It is an object to provide a liquid crystal display module and a liquid crystal display device that can maintain a constant clearance.

Means for Solving the Problems and Effects of the Invention

  A liquid crystal display module according to a first aspect of the present invention includes a liquid crystal display cell, a light source, a light incident surface including a side end surface on which light is incident from the light source, and a contact portion provided at a lower end portion. A light guide plate that guides light incident on the light incident surface from the light source to the liquid crystal display cell, and a support member that contacts the contact portion of the light guide plate and supports the light guide plate from below. At least one of the contact portion and the support member has an inclined surface that is inclined so that the light incident surface side of the light guide plate is lowered, and the support member can move the light guide plate to the light source side along the inclined surface by its own weight. In addition, it is configured to support the contact portion of the light guide plate.

  In the liquid crystal display module according to the first aspect of the present invention, as described above, at least one of the contact portion of the light guide plate and the support member is provided with an inclined surface that is inclined so that the light incident surface side of the light guide plate is lowered. The support member is configured to support the contact portion of the light guide plate so that the light guide plate can move to the light source side along the inclined surface by its own weight. Even when the distance (clearance) between the light guide plate and the light guide plate changes, the light guide plate moves to the light source side along the inclined surface by its own weight, so a spring member or the like for urging the light guide plate to the light source side should be provided separately. The change in the clearance between the light source and the light guide plate can be restored to the original with reference to the state where the clearance between the light source and the light guide plate is minimized. Thereby, the clearance between the light source and the light guide plate can be kept constant without separately providing a member for urging the light guide plate toward the light source. As a result, the clearance between the light source and the light guide plate can be kept constant without complicating the structure.

  In the liquid crystal display module according to the first aspect, preferably, the contact portion of the light guide plate has a first inclined surface that is inclined so that the light incident surface side is lowered, and the support member has the first inclined surface and the surface. It includes a second inclined surface that contacts and abuts so as to be relatively movable. If comprised in this way, since the 1st inclined surface of a contact part and the 2nd inclined surface of a supporting member will surface-contact, a light-guide plate (1st inclined surface) will be with respect to a supporting member (2nd inclined surface). The support member can stably support the light guide plate while being movable.

  In this case, preferably, the first inclined surface is formed integrally with the contact portion of the light guide plate, and the second inclined surface is formed integrally with the support member. If comprised in this way, since a 1st inclined surface and a 2nd inclined surface can be integrally provided in a light-guide plate and a supporting member, respectively, the case where a 1st inclined surface and a 2nd inclined surface are comprised by another member, In comparison, an increase in the number of parts can be suppressed. Also by this, it can suppress that a structure becomes complicated.

  In the liquid crystal display module according to the first aspect described above, preferably, the contact portion is the opposite side of the light contact surface to the first contact portion disposed at the position on the light incident surface side at the lower end portion of the light guide plate. The support member includes a first support member and a second support member corresponding to the first contact portion and the second contact portion, respectively. If comprised in this way, the 1st contact part arrange | positioned in the position of the light-incidence surface side and the 2nd contact part arrange | positioned in the position on the opposite side to a light-incidence surface will respectively correspond 1st. It can be supported by the support member and the second support member. Accordingly, the lower end portion of the light guide plate can be stably supported at the position on the light incident surface side and the position opposite to the light incident surface.

  In the liquid crystal display module according to the first aspect, preferably, the light guide plate is positioned at a position on the light incident surface side of the light guide plate so that the distance between the light source and the light incident surface of the light guide plate is a predetermined distance. A positioning part is further provided. According to this configuration, the positioning unit accurately positions the position where the clearance between the light source and the light guide plate becomes the smallest when the light guide plate moves to the light source side along the inclined surface by its own weight. can do. Moreover, since the positioning part is disposed at a position on the light incident surface side, it is possible to suppress a change in clearance due to thermal expansion of the light guide plate.

  In this case, preferably, the positioning part is formed integrally with the support member. If comprised in this way, since it is not necessary to provide a positioning part separately from a supporting member, it can suppress that a number of parts increases, As a result, a structure can be simplified.

  In the configuration including the positioning unit, the positioning unit is preferably configured to contact the light incident surface of the light guide plate to position the light guide plate. If comprised in this way, since it positions by contact | abutting with the light-incidence surface which is a side end surface at the side of a light source, in addition to the position shift of a light guide plate, the change of the clearance resulting from the thermal expansion of a light guide plate is also prevented. be able to. That is, in the present invention, the light guide plate moves to the light source side along the inclined surface by its own weight, so even if the size of the light guide plate changes due to thermal expansion, the light guide plate reaches the reference position where the light incident surface contacts the positioning portion. Can be moved to the light source side. As a result, the clearance between the light source and the light incident surface can be reliably maintained constant.

  The liquid crystal display module according to the first aspect preferably further includes a friction reducing member that is provided between the light guide plate and the support member and reduces friction between the light guide plate and the support member. If comprised in this way, it can be made easy to move a light-guide plate along an inclined surface with a friction reduction member, Therefore Even if the inclination angle of an inclined surface is small, a light-guide plate is easily along an inclined surface with dead weight. Can be moved.

  The liquid crystal display module according to the first aspect preferably further includes a holding member that holds the light source and the light guide plate, and the support member is formed integrally with the holding member. If comprised in this way, since a supporting member is integrally formed in the holding member holding a light source and a light-guide plate, it can suppress that a number of parts increases.

  A liquid crystal display device according to a second aspect of the present invention includes a liquid crystal display cell, a light source, a light incident surface including a side end surface on which light is incident from the light source, and a contact portion provided at a lower end portion. And a light guide plate that guides light incident on the light incident surface from the light source to the liquid crystal display cell, and a support member that contacts the contact portion of the light guide plate and supports the light guide plate from below. And a housing for housing the liquid crystal display module therein, and at least one of the contact portion of the light guide plate and the support member has an inclined surface inclined so that the light incident surface side of the light guide plate is lowered, and the support member Is configured to support the contact portion of the light guide plate so that the light guide plate can move to the light source side along the inclined surface by its own weight.

  In the liquid crystal display device according to the second aspect of the present invention, as described above, at least one of the contact portion of the light guide plate and the support member is provided with the inclined surface inclined so that the light incident surface side of the light guide plate is lowered. The support member is configured to support the contact portion of the light guide plate so that the light guide plate can move to the light source side along the inclined surface by its own weight. Even when the distance (clearance) between the light guide plate and the light guide plate changes, the light guide plate moves to the light source side along the inclined surface by its own weight, so a spring member or the like for urging the light guide plate to the light source side should be provided separately. The change in the clearance between the light source and the light guide plate can be restored to the original with reference to the state where the clearance between the light source and the light guide plate is minimized. Thereby, the clearance between the light source and the light guide plate can be kept constant without separately providing a member for urging the light guide plate toward the light source. As a result, the clearance between the light source and the light guide plate can be kept constant without complicating the structure of the liquid crystal display device.

It is the perspective view which showed the whole structure of the liquid crystal television by 1st and 2nd embodiment of this invention. It is the disassembled perspective view which showed the internal structure of the liquid crystal television by 1st Embodiment of this invention. FIG. 3 is a horizontal sectional view of the liquid crystal display module taken along line 150-150 in FIG. 2. It is the perspective view which showed the structure of LED of the liquid crystal display module by 1st Embodiment of this invention, and LED board. It is the figure which looked at the rear frame of the liquid crystal display module by 1st Embodiment of this invention, the light-guide plate hold | maintained at the rear frame, the LED board, and LED planarly. FIG. 6 is an enlarged plan view for explaining a light guide plate of the liquid crystal display module shown in FIG. 5 and first and second support portions of a rear frame. It is an enlarged view for demonstrating the movement (position shift | offset | difference) of the light-guide plate of the liquid crystal display module shown in FIG. It is an enlarged view for demonstrating the movement at the time of the movement (position shift | offset | difference) of the light-guide plate of the liquid crystal display module shown in FIG. 6 returning. It is an enlarged plan view for demonstrating the light-guide plate in the liquid crystal television by 2nd Embodiment of this invention, and the 1st and 2nd support part of a rear frame. It is a top view which shows the rear frame and light-guide plate in the 1st modification of the liquid crystal display module by 1st and 2nd embodiment of this invention. It is a top view which shows the rear frame and light-guide plate in the 2nd modification of the liquid crystal display module by 1st and 2nd embodiment of this invention.

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

(First embodiment)
First, with reference to FIGS. 1-7, the structure of the liquid crystal television 100 by 1st Embodiment of this invention is demonstrated. The liquid crystal television 100 is an example of the “liquid crystal display device” in the present invention.

  As shown in FIG. 1, the liquid crystal television 100 according to the first embodiment of the present invention includes a housing 10, a liquid crystal display module 20 having a liquid crystal display cell 70 constituting a display screen, and the housing 10 from below ( And a stand member 30 to be supported (from the arrow Z2 direction side).

  As shown in FIGS. 1 and 2, the housing 10 includes a front cabinet 11 and a rear cabinet 12 made of resin.

  The front cabinet 11 is disposed on the front side (arrow Y1 direction side) of the liquid crystal television 100. The front cabinet 11 has a rectangular frame shape having a substantially rectangular opening 11a when viewed from the front (arrow Y1 direction side). The opening 11 a is provided to expose the liquid crystal display cell 70 of the liquid crystal display module 20.

  The rear cabinet 12 is arranged on the back side (arrow Y2 direction side) of the liquid crystal television 100 and is configured to be fitted to the front cabinet 11 on the front side. The rear cabinet 12 has a substantially rectangular outer shape when viewed from the front (viewed from the arrow Y1 direction side), and is formed in a concave shape recessed backward (arrow Y2 direction side).

  As shown in FIG. 2, the liquid crystal display module 20 is accommodated in the front cabinet 11 and the rear cabinet 12. As shown in FIG. 3, the liquid crystal display module 20 includes a front bezel 21 and a rear frame 22 each made of a sheet metal such as aluminum, a mold frame 23 disposed between the front bezel 21 and the rear frame 22, and a back surface. A light unit 50 and a liquid crystal display cell 70 are included. The rear frame 22 is an example of the “holding member” in the present invention.

  As shown in FIGS. 2 and 3, the front bezel 21 is arranged on the front side (arrow Y1 direction side) of the liquid crystal display module 20. The front bezel 21 is attached to the back surface (surface on the arrow Y2 direction side) of the front cabinet 11. The front bezel 21 has a substantially rectangular outer shape when viewed from the front (as viewed from the direction of the arrow Y1), and has a substantially rectangular opening 21a. Specifically, as shown in FIG. 3, the front bezel 21 includes a front surface portion 21b having an opening 21a and an outer peripheral portion (both end portions in the Y direction and Z direction) of the front surface portion 21b with respect to the front surface portion 21b. And a side wall 21c extending in a substantially vertical direction (arrow Y2 direction). The opening 21 a is provided to expose the liquid crystal display cell 70. Further, the opening area of the opening 21 a is configured to be larger than the opening 11 a of the front cabinet 11.

  As shown in FIGS. 2 and 3, the rear frame 22 is disposed on the back side (Y2 direction side) of the liquid crystal display module 20. As shown in FIGS. 3 and 5, the rear frame 22 has a substantially rectangular outer shape when viewed from the front (arrow Y1 direction side), and is formed in a concave shape that is recessed rearward (arrow Y2 direction side). Yes. As shown in FIG. 3, the rear frame 22 includes a flat plate-like back surface portion 22a and a direction substantially perpendicular to the back surface portion 22a from the outer peripheral portion (both ends in the Y direction and Z direction) of the back surface portion 22a (arrows). And a plate-like side wall portion 22b extending in the (Y1 direction). The rear frame 22 is configured to hold an LED substrate 52 (see FIG. 4), a light guide plate 53, and the like, which will be described later.

  Further, in the first embodiment, as shown in FIG. 5, the rear frame 22 has a first support portion 41 and a second support portion 42 that support the light guide plate 53 from below, and a convex for positioning the light guide plate 53. Part 43. In the first embodiment, the first support portion 41 also has a function of positioning the light guide plate 53. The first support portion 41 is an example of the “support member” and the “first support member” in the present invention. The second support portion 42 is an example of the “support member” and the “second support member” in the present invention.

  As shown in FIG. 6, the first support portion 41 is provided at a position near the light incident surface 53 a of the light guide plate 53, and upward from the inner lower surface (the lower inner peripheral surface of the side wall portion 22 b) of the rear frame 22. It is formed to protrude. The first support portion 41 includes an inclined surface 41a composed of a flat upper end surface inclined at a predetermined inclination angle θ1 so that the light incident surface 53a side (arrow X1 direction side) of the light guide plate 53 is lowered, and an arrow X2 direction The positioning part 41b which consists of a side surface is integrally formed. The inclined surface 41a is an example of the “second inclined surface” in the present invention.

  The second support portion 42 is provided at a position in the vicinity of the right side surface 53b of the light guide plate 53 and is formed so as to protrude upward from the inner lower surface of the rear frame 22 (the lower inner peripheral surface of the side wall portion 22b). . The second support portion 42 is integrally formed with an inclined surface 42a composed of a flat upper end surface inclined at an inclination angle θ1 so that the light incident surface 53a side (arrow X1 direction side) of the light guide plate 53 is lowered. Yes. The inclined surface 42a is an example of the “second inclined surface” in the present invention.

  The convex portion 43 is provided so as to protrude downward from the inner upper surface of the rear frame 22. The convex portion 43 is integrally formed with a positioning portion 43a composed of a side surface on the arrow X2 direction side. The positioning part 41b of the first support part 41 and the positioning part 43a of the convex part 43 are arranged so that the positions in the lateral direction (X direction) coincide. Accordingly, the lower (arrow Z2 direction side) positioning portion 41b and the upper (arrow Z1 direction side) positioning portion 43a are configured to position the light guide plate 53 in the lateral direction (X direction) vertically. Has been.

  As shown in FIG. 3, the mold frame 23 is disposed so as to contact the back surface of the front bezel 21 (the surface of the front surface portion 21b on the arrow Y2 direction side) and the inner surface of the side wall portion 21c. The mold frame 23 includes a front side portion 23b having an opening 23a, and side walls extending in a direction substantially perpendicular to the front side portion 23b (arrow Y2 direction) from the outer peripheral portion (both ends in the Y direction and Z direction) of the front side portion 23b. Part 23c. A concave step portion 23d is provided at the front side (arrow Y1 direction side) central portion of the front side portion 23b of the mold frame 23. Between the step portion 23d and the front bezel 21, the outer peripheral edge of the plate-like liquid crystal display cell 70 extending in the vertical direction (Z direction) and the horizontal direction (X direction) (near both end portions in the Y direction and the Z direction) Part) is sandwiched. Thereby, the liquid crystal display cell 70 is held. Further, the inner side surface of the side wall portion 23 c of the mold frame 23 is in contact with the outer side surface of the side wall portion 22 b of the rear frame 22.

  As shown in FIG. 3, the backlight unit 50 is accommodated in the rear frame 22 and is held in a space surrounded by the rear frame 22 and the back surface of the mold frame 23 (the inner surface on the arrow Y2 direction side). ing. The backlight unit 50 is configured to irradiate light from the rear (from the arrow Y2 direction side) to the back surface (the surface at the arrow Y2 direction side) of the liquid crystal display cell 70. Specifically, the backlight unit 50 includes a plurality of LEDs 51 that are point light sources, an LED substrate 52 on which the LEDs 51 are mounted, a light guide plate 53 that guides light incident from the LEDs 51 to the liquid crystal display cell 70, A reflection sheet 54 that reflects the light incident on the light guide plate 53 to the liquid crystal display cell 70 side, and an optical sheet 55 that adjusts the luminance of the light emitted from the light guide plate 53 and the like are provided. The LED 51 is an example of the “light source” in the present invention.

  The LED 51 and the LED substrate 52 are attached to the inner side surface of the side wall 22b on the left side (arrow X1 direction side) of the rear frame 22. As shown in FIGS. 4 and 5, the LEDs 51 are spaced apart from each other along the vertical direction (Z direction) on the mounting surface 52a (surface on the arrow X2 direction side) of the LED substrate 52 that extends vertically. Multiple implementations. The LED 51 and the LED substrate 52 are connected via a lead terminal 51a.

  As shown in FIGS. 3 and 5, the light guide plate 53 is disposed on the back surface side (arrow Y2 direction side) of the liquid crystal display cell 70 and is formed in a substantially rectangular plate shape that is long in the X direction. ing. The light guide plate 53 is made of a resin such as acrylic having translucency. The light guide plate 53 includes a light incident surface 53a (left side surface on the arrow X1 direction side) extending in the vertical direction parallel to the LED substrate 52, a right side surface 53b opposite to the light incident surface 53a, and a long side surface. It has an upper end surface 53c and a lower end surface 53d. The light incident surface 53a is disposed at a predetermined interval (clearance) CL on the X2 direction side with respect to the LED 51 so as to face the LED 51 (see FIG. 4) of the LED substrate 52.

  In the first embodiment, the light guide plate 53 includes a first abutting portion 61 and a second abutting portion 62 each having a concave notch provided on the lower end surface 53d, and a positioning member provided on the upper end surface 53c. The recess 63 is integrally included. As shown in FIG. 6, the bottom (Z1 direction side portion) of the first contact portion 61 and the second contact portion 62 is inclined so that the light incident surface 53a side (arrow X1 direction side) is lowered. Flat inclined surfaces 61a and 62a inclined at an angle θ1 are integrally formed. The inclined surfaces 61a and 62a of the first contact portion 61 and the second contact portion 62 are in surface contact with the inclined surfaces 41a and 42a of the first support portion 41 and the second support portion 42, respectively, in a relatively movable state. It is configured as follows. Each of the first contact portion 61 and the second contact portion 62 is an example of the “contact portion” in the present invention. The inclined surfaces 61a and 62a are examples of the “first inclined surface” in the present invention.

  The first contact portion 61 is a concave portion that is recessed upward from the lower end surface 53d, and is disposed in the vicinity of the light incident surface 53a. The first contact portion 61 is integrally formed with the inclined surface 61a and the inner side surfaces 61b and 61c. The inner side surface 61b on the arrow X2 direction side is provided at a position in the vicinity of the light incident surface 53a that is separated from the light incident surface 53a by a distance D1, and is configured to contact the positioning portion 41b.

  The second contact portion 62 is a concave portion that is recessed upward from the lower end surface 53d, and is disposed in the vicinity of the right side surface 53b. The second contact portion 62 is integrally formed with the inclined surface 62a and the inner side surfaces 62b and 62c.

  The recess 63 is a recess recessed downward from the upper end surface 53c, and is disposed in the vicinity of the light incident surface 53a. In the recess 63, a bottom surface 63a, an inner side surface 63b, and an inner side surface 63c are integrally formed. The inner side surface 63b on the arrow X2 direction side is provided at a position in the vicinity of the light incident surface 53a that is separated from the light incident surface 53a by a distance D1, and is configured to contact the positioning portion 43a. That is, the inner side surface 61b of the lower first contact portion 61 and the inner side surface 63b of the upper concave portion 63 are arranged so that the positions in the horizontal direction (X direction) coincide.

  In the first embodiment, the inclined surface 61a (62a) and the inclined surface 41a (42a) are brought into surface contact with each other, so that the light guide plate 53 is moved by the first support portion 41 and the second support portion 42 of the rear frame 22. It is supported in the vertical direction (Z direction). The lower end surface 53d of the light guide plate 53 and the inner lower surface of the rear frame 22 are configured to be separated by a distance D2. That is, the lower end portions (the first contact portion 61 and the second contact portion 62) of the light guide plate 53 are supported only by the inclined surfaces 41a and the inclined surfaces 42a of the first support portion 41 and the second support portion 42. . As a result, the light guide plate 53 is movably supported so as to be displaced in an oblique direction (S direction) along the inclined surface 41a (42a).

  Here, since the inclined surface 61a (62a) and the inclined surface 41a (42a) are inclined at the inclination angle θ1 so that the light incident surface 53a side (arrow X1 direction side) is lowered, the light guide plate 53 includes The component force fs in the inclined surface direction (S1 direction) with respect to the own weight Fg acts. As a result, in the installed state of the liquid crystal television 100 shown in FIG. 1, the light guide plate 53 is urged so as to be movable toward the LED 51 (in the direction of arrow S1). The movement of the light guide plate 53 toward the LED 51 is stopped when the inner side surface 61b and the inner side surface 63b come into contact with the positioning portion 41b and the positioning portion 43a of the rear frame 22, respectively. As a result, the light guide plate 53 is configured to be positioned at a position where the clearance between the LED 51 and the light incident surface 53a is constant CL, and is held at this predetermined position.

  Note that the inclination angle θ1 of the inclined surface 61a (62a) and the inclined surface 41a (42a) is determined based on the weight of the light guide plate 53 and the frictional force generated between the inclined surfaces. Is set large enough to be energized. The weight of the light guide plate 53 is generally about 250 g to about 400 g for 18.5 inches and about 1900 g to about 2550 g for 40 inches. The inclination angle θ1 can be obtained analytically or experimentally from the weight of the light guide plate 53 and the frictional force calculated from the material (friction coefficient), the contact area, and the like.

  In consideration of a dimensional change due to thermal expansion (or contraction) of the light guide plate 53, a predetermined interval (clearance) is provided between each part of the light guide plate 53 and each part of the rear frame 22. Specifically, the width W2 of the first support portion 41 is smaller than the width W1 of the first contact portion 61. The width of the first contact portion 61 and the width W2 of the first support portion 41 are equal to the width (W1) of the upper concave portion 63 and the width (W2) of the convex portion 43, respectively. For this reason, the light guide plate 53 is movable by a distance D3 (D3 = W1-W2) in the arrow X2 direction. The distance D3 is larger than the positioning portion 41b of the light guide plate 53 to sufficiently absorb the dimensional change due to thermal expansion (contraction) of the portion on the light incident surface 53a side (arrow X1 direction side).

  Further, a distance (clearance) D4 between the right side surface 53b of the light guide plate 53 in the arrow X2 direction and the inner surface of the rear frame 22 is larger than the distance D3. The distance D4 is large enough to absorb the dimensional change due to thermal expansion (contraction) of the portion on the right side surface 53b side (arrow X2 direction side) from the positioning portion 41b.

  The width W3 of the second support portion 42 is smaller than the width W2 of the first support portion 41, and intervals D5 and D6 are formed on both sides of the second support portion 42. For this reason, the second support portion 42 is configured such that the side surfaces on both sides in the X direction do not come into contact with the inner side surfaces 62 b and 62 c of the second contact portion 62. Therefore, the second contact portion 62 does not function as a positioning portion.

  Further, the distance D7 between the upper end surface 53c of the light guide plate 53 and the inner upper surface of the rear frame 22 is large enough to absorb the vertical dimension change of the light guide plate 53 due to thermal expansion (shrinkage).

  From the above dimensional relationship, when it is assumed that there is no thermal expansion (shrinkage) of the light guide plate 53, the light guide plate 53 can move in the arrow X2 direction by a distance D3 (D3 = W1-W2) along the S direction. , And can be moved upward (in the direction of arrow Z1) by a distance (D3 × tan θ1).

  As shown in FIG. 3, the reflection sheet 54 has the light guide plate 53 and the bottom surface of the rear frame 22 so that the front surface (the surface on the arrow Y1 direction side) is in contact with the back surface (the surface on the arrow Y2 direction side). It is arranged between. The reflection sheet 54 is made of a resin such as PET (polyethylene terephthalate) having light reflectivity.

  With such a configuration, after the light from the LED 51 is incident on the light incident surface 53a of the light guide plate 53, the light output surface 53e (the surface on the arrow Y1 direction side) of the light guide plate 53 while repeating multiple reflections by the reflection sheet 54. ). The light emitted from the light emitting surface 53 e of the light guide plate 53 is irradiated toward the liquid crystal display cell 70 after the brightness and the like are adjusted by the optical sheet 55. Thereby, an image is displayed on the liquid crystal display cell 70.

  Next, the movement operation of the light guide plate 53 according to the first embodiment will be described with reference to FIGS.

  As shown in FIG. 6, the light guide plate 53 is supported in a state of being biased toward the LED 51 (arrow X1 direction side) by the component force fs in the inclined surface direction with respect to its own weight. The movement of the light guide plate 53 in the inclined surface direction is caused by the positioning portion 41b and the positioning portion 43a contacting the inner side surface 61b of the first contact portion 61 of the light guide plate 53 and the inner side surface 63b of the recess 63, respectively. Has been stopped. As a result, the light guide plate 53 is positioned in the X direction.

  In this state, when an external force that overcomes the component force fs toward the arrow X2 direction (arrow S2 direction) is applied to the light guide plate 53, the light guide plate 53 is inclined to the inclined surface 41a (42a, 42a, 42) as shown in FIG. 6) and moves away from the LED 51 (in the direction of arrow S2). At this time, the light guide plate 53 is movable by a distance D3 in the arrow X2 direction. As a result, the clearance between the LED 51 and the light incident surface 53a is temporarily larger than CL (see the dashed line in FIG. 7).

  Even in this case, as shown in FIG. 8, when the external force applied to the light guide plate 53 is eliminated, the light guide plate 53 has the inner surface 61 b and the concave portion of the first contact portion 61 by the component force fs in the inclined surface direction with respect to its own weight Fg. The inner side surface 63b of 63 (see FIG. 6) moves to the LED 51 side (arrow S1 direction side) until it comes into contact with the positioning portions 41b and 43a (see FIG. 6). As a result, the position of the light guide plate 53 is restored to a predetermined position where the clearance between the LED 51 and the light incident surface 53a is CL (see the one-dot chain line in FIG. 8). As shown in FIG. 1, in the use state of the liquid crystal television 100, the lateral external force is not continuously applied to the light guide plate 53, so that the light guide plate 53 has a clearance between the LED 51 and the light incident surface 53 a. Is held at a predetermined position where CL becomes CL.

  Since the positioning portion 41b and the positioning portion 43a are respectively in contact with the inner side surface 61b of the first contact portion 61 of the light guide plate 53 and the inner side surface 63b of the recess 63, the light guide plate 53 is locked. When the thermal expansion (contraction) of the light guide plate 53 occurs, only the dimensional change of the light guide plate 53 within the distance D1 from the light incident surface 53a to the positioning portion 41b (43a) is the only difference between the LED 51 and the light incident surface 53a. This affects the change in the clearance CL. In the first embodiment, as shown in FIG. 5, since the positioning portions 41b and 43a (the inner side surface 61b and the inner side surface 63b) are arranged in the vicinity of the light incident surface 53a, thermal expansion (contraction) occurred. In this case, the amount of change in the clearance due to the change in dimension of the light guide plate 53 is reduced.

  In the first embodiment, as described above, the first support portion 41 and the second support portion 42 of the rear frame 22 are provided with the inclined surfaces 41a and 42a inclined so that the light incident surface 53a side of the light guide plate 53 is lowered. The first support part 41 and the second support part 42 are provided so that the light guide plate 53 can move to the LED 51 side along the inclined surfaces 41a and 42a by its own weight. By configuring so as to support the second contact portion 62, the light guide plate 53 is inclined by its own weight even when the light guide plate 53 is displaced and the clearance between the LED 51 and the light guide plate 53 is changed. It moves to LED51 side along 41a and 42a. For this reason, without providing a spring member or the like for urging the light guide plate 53 toward the LED 51, the clearance between the LED 51 and the light guide plate 53 is based on the state where the clearance between the LED 51 and the light guide plate 53 becomes CL. Clearance changes can be reversed. Thereby, the clearance between the LED 51 and the light guide plate 53 can be kept constant (CL) without separately providing a member that urges the light guide plate 53 toward the LED 51. As a result, the clearance between the LED 51 and the light guide plate 53 can be kept constant (CL) without complicating the structure.

  In the first embodiment, as described above, the inclined surfaces 61a and 62a that are inclined so that the light incident surface 53a side is lowered are formed on the first contact portion 61 and the second contact portion 62 of the light guide plate 53, respectively. In addition, the first support portion 41 and the second support portion 42 are provided with inclined surfaces 41a and 42a that are in surface contact with the inclined surfaces 61a and 62a and are in contact with each other so as to be relatively movable. And 62a) can move relative to the first support part 41 and the second support part 42 (inclined surfaces 41a and 42a), while the first support part 41 and the second support part 42 stably support the light guide plate 53. can do.

  In the first embodiment, as described above, the inclined surfaces 61a and 62a are formed integrally with the first contact portion 61 and the second contact portion 62 of the light guide plate 53, respectively, and the inclined surfaces 41a and By forming 42a integrally with the first support part 41 and the second support part 42, respectively, it is possible to suppress an increase in the number of parts as compared with the case where these inclined surfaces are constituted by separate members. it can. Also by this, it can suppress that a structure becomes complicated.

  In the first embodiment, as described above, at the lower end portion of the light guide plate 53, the first contact portion 61 disposed at the position on the light incident surface 53a side and the position opposite to the light incident surface 53a. The second abutting portion 62 is provided, and the first supporting portion 41 and the second supporting portion 42 corresponding to the first abutting portion 61 and the second abutting portion 62 are provided, so that light is incident. The first abutment portion 61 disposed at the position on the surface 53a side and the second abutment portion 62 disposed at the position opposite to the light incident surface 53a are respectively associated with the first support portion 41 and the first 2 can be supported by the support portion 42. Accordingly, the lower end portion of the light guide plate 53 can be stably supported at a position on the light incident surface 53a side (arrow X1 direction side) and a position opposite to the light incident surface 53a (arrow X2 direction side). .

  In the first embodiment, as described above, the clearance between the LED 51 and the light incident surface 53a of the light guide plate 53 is provided between the first support portion 41 and the convex portion 43 disposed in the vicinity of the light incident surface 53a. By providing the positioning portion 41b and the positioning portion 43a for positioning the light guide plate 53 so as to be spaced apart from the CL, the light guide plate 53 follows the inclined surfaces (41a and 42a) by its own weight by the positioning portions 41b and 43a. When moving to the LED 51 side, the LED 51 and the light guide plate 53 can be accurately positioned so as to be spaced apart by the clearance CL. In addition, since the positioning portions 41b and 43a are disposed in the vicinity of the light incident surface 53a, a change in the clearance CL due to the thermal expansion of the light guide plate 53 can be suppressed.

  In the first embodiment, as described above, since the positioning portion 41b is formed integrally with the first support portion 41, it is not necessary to provide the positioning portion 41b separately from the first support portion 41. The increase in the number of parts can be suppressed, and as a result, the structure can be simplified.

  In the first embodiment, as described above, the first support portion 41 and the second support portion 42 are formed integrally with the rear frame 22, so that the rear frame 22 that holds the LED 51 and the light guide plate 53 is formed. Since the 1st support part 41 and the 2nd support part 42 are integrally formed, it can suppress that a number of parts increases.

(Second Embodiment)
Next, with reference to FIG. 1 and FIG. 9, the structure of the liquid crystal television 200 (refer FIG. 1) by 2nd Embodiment of this invention is demonstrated. In the second embodiment, unlike the first embodiment in which the positioning portion 41b is integrally formed with the first support portion 41, the positioning portion 143a is provided separately from the first support portion 141, and the positioning portion 143a is provided. An example in which the light guide plate 153 is positioned in contact with the light incident surface 153a of the light guide plate 153 will be described. The liquid crystal television 200 is an example of the “liquid crystal display device” in the present invention. The first support portion 141 is an example of the “support member” and the “first support member” in the present invention.

  Furthermore, in the second embodiment, an example in which a friction reduction member 144 that reduces friction between the light guide plate 153 and the first support portion 141 (second support portion 142) is provided will be described. In addition, since structures other than the rear frame 122 and the light guide plate 153 of the liquid crystal television 200 according to the second embodiment are the same as those of the first embodiment, description thereof is omitted. The rear frame 122 is an example of the “holding member” in the present invention. The second support part 142 is an example of the “support member” and the “second support member” in the present invention.

  The rear frame 122 of the liquid crystal television 200 according to the second embodiment is made of a sheet metal such as aluminum, and is used to position the light guide plate 53 and the first support portion 141 and the second support portion 142 that support the light guide plate 153 from below. And a pair of upper and lower convex portions 143 are integrally included.

  The first support portion 141 is provided at a position near the light incident surface 153 a of the light guide plate 153 and is formed to protrude upward from the inner lower surface of the rear frame 122. The first support 141 is integrally formed with an inclined surface 141a composed of a flat upper end surface inclined at a predetermined inclination angle θ2 so that the light incident surface 153a side (arrow X1 direction side) of the light guide plate 153 is lowered. Has been. The inclined surface 141a is an example of the “second inclined surface” in the present invention.

  The second support portion 142 is provided at a position in the vicinity of the right side surface 153 b of the light guide plate 153 and is formed to protrude upward from the inner lower surface of the rear frame 122. The second support portion 142 is integrally formed with an inclined surface 142a composed of a flat upper end surface inclined at an inclination angle θ2 so that the light incident surface 153a side (arrow X1 direction side) of the light guide plate 153 is lowered. Yes. Here, in the second embodiment, the inclination angle θ2 of the inclined surface 141a and the inclined surface 142a is smaller than the inclination angle θ1 of the inclined surface 41a and the inclined surface 42a of the first embodiment. The inclined surface 142a is an example of the “second inclined surface” in the present invention.

  In the second embodiment, a friction reducing member 144 is provided over substantially the entire surface of the inclined surface 141a of the first support portion 141 and the inclined surface 142a of the second support portion 142, respectively. The friction reducing member 144 is made of a sheet-like member having a low friction coefficient, and is attached to the inclined surface 141a and the inclined surface 142a. As the friction reducing member 144, a known member such as a fluororesin sheet such as PTFE can be used. The friction reducing member 144 reduces the frictional resistance during sliding between the light guide plate 153 made of resin such as acrylic and the inclined surface 141a and inclined surface 142a (rear frame 122) made of sheet metal such as aluminum. If it is possible.

  The pair of convex portions 143 are provided so as to protrude inward from the inner upper surface and the inner lower surface of the rear frame 122 in the vicinity of the end of the rear frame 122 on the LED 51 side (arrow X1 direction side) and face the upper and lower sides. Each convex portion 143 is integrally formed with a positioning portion 143a composed of a side surface on the arrow X2 direction side. The positioning portions 143a of the pair of upper and lower convex portions 143 are arranged so that the positions in the horizontal direction (X direction) coincide with each other, and are in contact with the light incident surface 153a of the light guide plate 153 in the upper and lower directions, respectively. It is configured to perform positioning in the lateral direction (X direction). The positioning portion 143a is disposed with a predetermined interval (clearance) CL on the side of the arrow X2 with respect to the LED 51 in a state where the light incident surface 153a of the light guide plate 153 is in contact with the positioning portion 143a. It is arranged at a predetermined position.

  In the second embodiment, the light guide plate 153 integrally includes a first contact portion 161 and a second contact portion 162 formed of a concave notch provided on the lower end surface 153d. The first contact portion 161 is provided on the light incident surface 153a side, and the second contact portion 162 is provided on the right side surface 153b side (arrow X2 direction side). The bottom portions (Z1 direction side portions) of the first contact portion 161 and the second contact portion 162 are each flat and inclined at an inclination angle θ2 such that the light incident surface 153a side (arrow X1 direction side) is lowered. The inclined surfaces 161a and 162a are integrally formed. The inclined surface 161a and the inclined surface 162a are brought into surface contact with the inclined surface 141a of the first support portion 141 and the inclined surface 142a of the second support portion 142 through the friction reducing member 144 in a relatively movable state, respectively. It is configured. Each of the first contact portion 161 and the second contact portion 162 is an example of the “contact portion” in the present invention.

  In the second embodiment, since the light guide plate 153 is positioned by the light incident surface 153a of the light guide plate 153, the first contact portion 161 (and the second contact portion 162) is the first support portion 141 (second support). Part 142) in the X direction. That is, in the second embodiment, the width W11 of the first contact portion 161 is sufficiently larger than the width W12 of the first support portion 141. Similarly, the width W13 of the second contact portion 162 is sufficiently larger than the width W14 of the second support portion 142. Therefore, even when the light guide plate 153 moves in the X direction, the first contact portion 161 (and the second contact portion 162) is different from the first support portion 141 (second support portion 142) in the X direction. Do not touch.

  With the above configuration, in the second embodiment, the inclined surface 161a of the first contact portion 161 and the inclined surface 162a of the second contact portion 162 are respectively the inclined surface 141a and the second surface of the first support portion 141. It is supported in the vertical direction (Z direction) by the inclined surface 142a of the support portion 142. The lower end surface 153d of the light guide plate 153 and the inner lower surface of the rear frame 122 are configured to be spaced apart by a distance D12. That is, the lower end portion (the first contact portion 161 and the second contact portion 162) of the light guide plate 153 is supported only by the inclined surfaces 141a and the inclined surfaces 142a of the first support portion 141 and the second support portion 142. . As a result, the light guide plate 153 is supported so as to be movable so as to be displaced in an oblique direction (T direction) along the inclined surface 141a (142a).

  Further, the light guide plate 153 is urged so as to be movable toward the LED 51 (arrow T1 direction) as a result of the component force ft in the direction of the inclined surface (T1 direction) with respect to its own weight Fg. In the second embodiment, the movement of the light guide plate 153 toward the LED 51 is stopped when the vicinity of the upper and lower end portions of the light incident surface 153 a abuts on the upper and lower positioning portions 143 a of the rear frame 122. As a result, the light guide plate 153 is configured to be positioned at a position where the clearance between the LED 51 and the light incident surface 153a is constant CL, and is held at this predetermined position.

  In the second embodiment, the light guide plate 153 is urged toward the LED 51 by the component force ft in the inclined surface direction (T1 direction), and the light incident is such that the positioning portion 143a is the LED 51 side end surface of the light guide plate 153. Since the light guide plate 153 is locked at a position in contact with the surface 153a, even if thermal expansion (shrinkage) of the light guide plate 153 occurs, the position of the light incident surface 153a does not change. That is, since the contact between the light incident surface 153a and the positioning portion 143a is maintained both when the light guide plate 153 expands and when the light guide plate 153 contracts, the clearance between the LED 51 and the light incident surface 153a is maintained. CL does not change.

  In the second embodiment, as described above, the first support portion 141 (second support portion 142) of the rear frame 122 is inclined such that the light incident surface 153a side of the light guide plate 153 is lowered. ) And the first support portion 141 (second support portion 142) is moved to the LED 51 side along the inclined surface 141a (142a) by its own weight so that the light guide plate 153 can move to the LED 51 side. By configuring so as to support the contact portion 161 (second contact portion 162), the light guide plate even if the light guide plate 153 is displaced and the clearance CL between the LED 51 and the light guide plate 153 changes. 153 moves to the LED 51 side along the inclined surfaces 141a and 142a by its own weight. Thereby, since the change of the clearance CL between the LED 51 and the light guide plate 153 can be restored, the member between the LED 51 and the light guide plate 53 can be provided without separately providing a member for urging the light guide plate toward the light source. Clearance CL can be kept constant. As a result, the clearance between the light source and the light guide plate can be kept constant without complicating the structure.

  In the second embodiment, as described above, the positioning portion 143a is configured to contact the light incident surface 153a of the light guide plate 153 so as to position the light guide plate 153, whereby the side end surface on the LED 51 side is formed. Therefore, in addition to the displacement of the light guide plate 153, a change in the clearance CL due to the thermal expansion of the light guide plate 153 can be prevented. That is, in the second embodiment, since the light guide plate 153 moves to the LED 51 side along the inclined surface 141a (142a) by its own weight, the light incident surface 153a is positioned even if the dimensions of the light guide plate 153 change due to thermal expansion. The light guide plate 153 can be moved to the LED 51 side to a position where it comes into contact with the portion 143a. As a result, the clearance CL between the LED 51 and the light incident surface 153a can be reliably kept constant.

  In the second embodiment, as described above, the friction is reduced between the first contact portion 161 (second contact portion 162) and the first support portion 141 (second support portion 142) of the light guide plate 153. By providing the member 144, the light guide plate 153 can be easily moved along the inclined surface 141a (142a) by the friction reducing member 144. Thereby, even if the inclination angle θ2 of the inclined surface 141a (142a) is small, the light guide plate 153 can be easily moved along the inclined surface 141a (142a) by its own weight. For this reason, in 2nd Embodiment, even if it makes inclination angle (theta) 2 of inclined surface 141a (142a) smaller than inclination angle (theta) 1 of 1st Embodiment, the effect similar to 1st Embodiment can be acquired.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the first and second embodiments, the example in which the present invention is applied to a liquid crystal television as a liquid crystal display device has been shown, but the present invention is not limited to this. The present invention is also applicable to other liquid crystal display devices such as a PC (Personal Computer) monitor.

  In the first and second embodiments, at the lower end of the light guide plate, the two contact portions are arranged on the light incident surface side (arrow X1 direction side) and the right side surface side (arrow X2 direction side), respectively. Although an example in which two support portions are arranged corresponding to the rear frame has been shown, the present invention is not limited to this. In the present invention, as in the first modification shown in FIG. 10, only one contact portion 261 may be provided on the light guide plate 253 and only one corresponding support portion 241 may be provided. The support portion 241 is an example of the “support member” in the present invention.

  In the first modification, an inclined surface 261a of the contact portion 261 is formed over the entire lower end surface 253d of the light guide plate 253. The support portion 241 is provided at a substantially central portion in the X direction of the rear frame 222 and integrally includes an inclined surface 241a. The support portion 241 has a width W22 that is larger than the width W2 (W12) of the first support portion 41 (141) of the first and second embodiments. For this reason, it is possible to stably support the light guide plate 253 with only one support portion 241. Thus, in the present invention, only one contact portion and one support portion may be provided. The rear frame 222 is an example of the “holding member” in the present invention. The inclined surface 261a is an example of the “first inclined surface” in the present invention, and the inclined surface 241a is an example of the “second inclined surface” in the present invention.

  In the first and second embodiments, the light guide plate is formed in a substantially rectangular shape, and an inclined surface is formed in the contact portions (first contact portion and second contact portion) formed of concave notches. However, the present invention is not limited to this. In the present invention, as in the first modified example shown in FIG. 10, the light guide plate 253 may be formed in a parallelogram in which the upper end surface 253c and the lower end surface 253d are inclined over the entire surface. In the present invention, besides the parallelogram, only the lower end surface of the light guide plate may be inclined over substantially the entire surface.

  Moreover, although the example which formed the contact part (1st contact part and 2nd contact part) in the lower end surface of the light-guide plate was shown in the said 1st and 2nd embodiment, this invention is not limited to this. . In the present invention, as in the second modification shown in FIG. 11, the contact portion 361 may be formed over both the right side surface 353b and the lower end surface 353d of the light guide plate 353. That is, the contact portion 361 only needs to be provided at the lower end portion of the light guide plate 353, and the contact portion 361 may be provided at the lower right corner as in the second modified example of FIG. In the second modification, the inclined surface 361a of the contact portion 361 and the inclined surface 341a of the support member 341 are in contact with each other, and the upper and lower ends of the light incident surface 353a are respectively positioned with a pair of upper and lower positioning portions 343a of the rear frame 322. Abut. As a result, the light guide plate 353 is urged toward the LED 51 along the inclined surface 341a of the support member 341 by its own weight, and is positioned and locked in contact with the pair of upper and lower positioning portions 343a. The rear frame 322 is an example of the “holding member” in the present invention. Further, the inclined surface 361a and the inclined surface 341a are examples of the “first inclined surface” and the “second inclined surface” in the present invention, respectively.

  Moreover, although the example which formed the support part integrally in the rear frame was shown in the said 1st and 2nd embodiment, this invention is not limited to this. In the present invention, the support member 341 may be provided separately from the rear frame 322 as in the second modified example shown in FIG. In the second modification, a triangular support member 341 that fits in the lower right corner of the rear frame 322 is provided. The support member 341 supports the inclined surface 361a of the contact portion 361 so as to be relatively movable by the inclined surface 341a facing the inner side of the rear frame 322.

  In the first and second embodiments, both the contact portion (first contact portion and second contact portion) of the light guide plate and the support portion (first support portion and second support portion) are used. Although an example in which inclined surfaces are formed has been shown, the present invention is not limited to this. In this invention, you may provide an inclined surface only in any one of the contact part or support part of a light-guide plate. That is, an inclined surface may be formed in the contact portion of the light guide plate, and the upper end surface of the support portion formed of a convex portion may be a flat surface that does not incline. In this case, at the upper end portion of the support portion made of a convex portion, only the corner portion comes into contact with the inclined surface of the contact portion in a substantially line contact state. Similarly, the contact portion of the light guide plate may be formed as a non-inclined convex portion protruding downward, and the upper end surface of the support portion may be an inclined surface.

10 Housing 20 Liquid crystal display module 22, 122, 222, 322 Rear frame (holding member)
41, 141 first support part (support member, first support member)
41a, 141a inclined surface (second inclined surface)
41b Positioning part 42, 142 2nd support part (support member, 2nd support member)
42a, 142a inclined surface (second inclined surface)
43a Positioning part 51 LED (light source)
53, 153, 253, 353 Light guide plate 53a, 153a, 353a Light incident surface 61, 161 First contact portion (contact portion)
61a, 161a Inclined surface (first inclined surface)
62, 162 Second contact portion (contact portion)
62a, 162a Inclined surface (first inclined surface)
70 Liquid crystal display cell 100, 200 Liquid crystal television (liquid crystal display device)
143a, 343a Positioning portion 144 Friction reducing member 241 Support portion (support member)
241a inclined surface (second inclined surface)
261, 361 Contact portion 261a, 361a Inclined surface (first inclined surface)
341 Support member 341a Inclined surface (second inclined surface)

Claims (10)

A liquid crystal display cell;
A light source;
A light incident surface including a side end surface on which light from the light source is incident; and a contact portion provided at a lower end portion, and guides light incident on the light incident surface from the light source to the liquid crystal display cell. A light guide plate that shines;
A support member that contacts the contact portion of the light guide plate and supports the light guide plate from below;
At least one of the contact portion of the light guide plate and the support member has an inclined surface that is inclined so that the light incident surface side of the light guide plate is lowered,
The liquid crystal display module, wherein the support member is configured to support a contact portion of the light guide plate so that the light guide plate can move to the light source side along the inclined surface by its own weight. The contact portion of the light guide plate has a first inclined surface that is inclined so that the light incident surface side is lowered,
2. The liquid crystal display module according to claim 1, wherein the support member includes a second inclined surface that is in surface contact with the first inclined surface and abuts so as to be relatively movable. The first inclined surface is integrally formed with the contact portion of the light guide plate,
The liquid crystal display module according to claim 2, wherein the second inclined surface is formed integrally with the support member. The contact portion includes a first contact portion disposed at a position on the light incident surface side at a lower end portion of the light guide plate, and a second contact disposed at a position opposite to the light incident surface. Including
The liquid crystal display according to claim 1, wherein the support member includes the first support member and the second support member corresponding to the first contact portion and the second contact portion, respectively. module.   The light guide plate further includes a positioning unit that is disposed at a position on the light incident surface side of the light guide plate and positions the light guide plate so that a distance between the light source and the light incident surface of the light guide plate is a predetermined distance. The liquid crystal display module of any one of -4.   The liquid crystal display module according to claim 5, wherein the positioning portion is formed integrally with the support member.   The liquid crystal display module according to claim 5, wherein the positioning unit is configured to contact the light incident surface of the light guide plate to position the light guide plate.   The friction reduction member provided between the said light-guide plate and the said support member, and further reducing the friction between the said light-guide plate and the said support member is provided in any one of Claims 1-7. LCD display module. A holding member for holding the light source and the light guide plate;
The liquid crystal display module according to claim 1, wherein the support member is formed integrally with the holding member. A liquid crystal display cell;
A light source;
A light incident surface including a side end surface on which light is incident from the light source; and a contact portion provided at a lower end portion, and the light incident on the light incident surface from the light source is applied to the liquid crystal display cell. A light guide plate for guiding light;
A liquid crystal display module including a support member that contacts the contact portion of the light guide plate and supports the light guide plate from below;
A housing for accommodating the liquid crystal display module therein,
At least one of the contact portion of the light guide plate and the support member has an inclined surface that is inclined so that the light incident surface side of the light guide plate is lowered,
The liquid crystal display device, wherein the support member is configured to support a contact portion of the light guide plate so that the light guide plate can move to the light source side along the inclined surface by its own weight.

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