CN114175131B - Display device and tolerance absorbing connecting member - Google Patents

Abstract

A tolerance absorption coupling member (10) of a display device (100) comprises: a 1 st connecting part (11) which is screwed with the inclined part from the rear under the state that the first connecting part has the inclination along the inclined part of the liquid crystal panel installation metal member (4) and is contacted with the back surface of the inclined part; and a 2 nd connecting part (12) which is bent and extended from the 1 st connecting part (11) and is screwed with the base frame (5) from the rear side in a state of contacting with the back surface of the base frame (5), or is screwed with the front panel (1) in a state of clamping the base frame (5) with the front panel (1). The 1 st connecting part (11) has a 1 st through hole (13) for screw-fastening to the inclined part. The 2 nd connecting part (12) has a 2 nd through hole (14) for screw-fastening with the base frame (5) or the front panel (1).

Description

Display device and tolerance absorbing connecting member

Technical Field

The invention relates to a display device and a tolerance absorbing and connecting member.

Background

Conventionally, display devices having touch panels are widely used. Patent document 1 discloses a touch panel mounting structure in an operation device, which includes a 1 st mounting device for integrally fixing a touch panel and a display unit, and a 2 nd mounting device for coupling to a lower end of the 1 st mounting device and mounting and fixing the same to a device main body. In the 1 st mounting tool, a long hole for adjusting the mounting height in the vertical direction is formed in the connection portion with the 2 nd mounting tool. In the apparatus main body, a longitudinal hole for adjusting the mounting position of the 2 nd mounting tool in the front-rear direction is formed in the connection portion with the 2 nd mounting tool.

Patent document 1: japanese patent laid-open publication No. 7-230567

Disclosure of Invention

However, when the touch panel mounting structure disclosed in patent document 1 is assembled, first, the display unit and the touch panel are integrated into an integrated structure by the 1 st mounting fixture, and the 2 nd mounting fixture is temporarily fixed by a screw. Next, the 2 nd mounting element is temporarily fixed to the main body by screws in a state in which the integrated structure to which the 2 nd mounting element is temporarily fixed is suspended in the air. Then, the adjustment and temporary fixation of the screw fastening position in the elongated hole of the first mounting tool 1 and the adjustment and temporary fixation of the screw fastening position in the elongated hole of the device main body are individually repeated, and after the integrated structure and the device main body are adjusted to an appropriate positional relationship, the integrated structure and the device main body are fixed by the main fastening of the screw.

Therefore, in the mounting structure of the touch panel disclosed in patent document 1, the adjustment and temporary fixation of the screw fastening position in the elongated hole of the 1 st mounting piece and the adjustment and temporary fixation of the screw fastening position in the elongated hole of the apparatus main body are separately repeated, so that the assembly work becomes complicated and the work time becomes long.

The present invention has been made in view of the above circumstances, and an object thereof is to obtain a display device which can be assembled easily and in a short time.

In order to solve the above problems and achieve the object, a display device according to the present invention includes: a frame-shaped front panel; a touch panel having a flat plate shape, wherein an outer peripheral edge portion of a back surface is fixed to a front surface of the front panel by a 1 st adhesive layer so as to close an opening of the front panel; a liquid crystal panel having a flat plate shape, the front surface of which is fixed to the back surface of the touch panel by a 2 nd adhesive layer in a state of being parallel to the front panel; and a base frame which is perpendicular to the front surface of the front panel, has a flat plate shape when the direction from the touch panel to the liquid crystal panel is set to the rear, and is disposed behind the liquid crystal panel in a state of being parallel to the front panel. In addition, the display device includes: a liquid crystal panel mounting metal fitting which is fixed to the liquid crystal panel in a state of protruding rearward from the liquid crystal panel, and which has an inclined portion inclined with respect to the rear surface of the base frame toward the rear, at a rear side of the base frame; and a tolerance absorption connection component which connects and fixes at least one of the front panel and the base frame and the liquid crystal panel installation metal piece. The tolerance absorption connecting component comprises: a 1 st connecting part which is screwed with the inclined part from the rear side in a state of contacting with the back surface of the inclined part along the inclination of the inclined part; and a 2 nd connecting part which is bent and extended from the 1 st connecting part, and is screwed with the base frame from the rear side in a state of contacting with the rear surface of the base frame, or is bent and extended from the 1 st connecting part, and is screwed with the front panel from the rear side in a state of contacting with the rear surface of the base frame and clamping the base frame with the front panel. The 1 st coupling portion has a 1 st through hole for screw-fastening with the inclined portion. The 2 nd connecting part has a 2 nd through hole for fastening with a base frame screw or a front panel screw.

ADVANTAGEOUS EFFECTS OF INVENTION

The display device according to the present invention is advantageous in that the tolerance absorbing coupling member having the 1 st coupling portion having the 1 st through hole and the 2 nd coupling portion having the 2 nd through hole and bent from the 1 st coupling portion connects and fixes at least one of the front panel and the base frame and the liquid crystal panel mounting metal fitting.

Drawings

Fig. 1 is a schematic cross-sectional view showing a schematic structure of a display device according to embodiment 1 of the present invention.

Fig. 2 is a side view showing the structure of the tolerance absorbing coupling member of the display device shown in fig. 1.

Fig. 3 is a plan view showing a structure of a tolerance absorbing coupling member of the display device shown in fig. 1.

Fig. 4 is a schematic view showing a screw fastening method of a screw for fixing the 1 st connecting portion of the tolerance absorbing and connecting member and the 2 nd mounting fitting portion of the liquid crystal panel mounting fitting at the time of assembling the display device shown in fig. 1, and a screw fastening method of a screw for fixing the 2 nd connecting portion of the tolerance absorbing and connecting member, the base frame, and the front panel.

Fig. 5 is a diagram showing the structure of a test piece for qualitative evaluation of the bending angle in the tolerance absorbing coupling member of the display device shown in fig. 1.

Fig. 6 is a graph showing the results of an evaluation test concerning the bending angle in the tolerance absorbing coupling member of the display device shown in fig. 1.

Fig. 7 is a graph showing the results of an evaluation test concerning the bending angle in the tolerance absorbing coupling member of the display device shown in fig. 1.

Fig. 8 is a schematic view showing an example of a universal joint that can be used in the automatic screw fastening device used when the display device shown in fig. 1 is assembled.

Fig. 9 is a schematic diagram illustrating a swing angle of the universal joint in the case of 2-coupling the universal joint shown in fig. 8.

Fig. 10 is an oblique view of a display device manufactured in accordance with a design size.

Fig. 11 is a front view of a display device sized.

Fig. 12 is a cross-sectional view XII-XII in fig. 11.

Fig. 13 is a perspective view showing a state in which the front panel and the touch panel are removed from fig. 10.

Fig. 14 is a front view showing a state in which the front panel and the touch panel are removed from fig. 11.

Fig. 15 is a top view showing a liquid crystal panel, a liquid crystal panel mounting metal, a base frame, and a tolerance absorbing coupling member in a display device in which the distance between the liquid crystal panel and the base frame in the front-rear direction is designed according to the design dimensions in embodiment 1.

Fig. 16 is an enlarged view of the region B in fig. 15.

Fig. 17 is a left side view showing the liquid crystal panel, the liquid crystal panel attachment metal, the base frame, and the tolerance absorbing and coupling member in the display device in which the distance in the front-rear direction between the liquid crystal panel and the base frame in embodiment 1 is designed.

Fig. 18 is a rear view showing a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing and coupling member in a display device in which the distance in the front-rear direction between the liquid crystal panel and the base frame in embodiment 1 is designed.

Fig. 19 is an enlarged view of the region C in fig. 18.

Fig. 20 is an oblique view in the sagittal direction a of fig. 15.

Fig. 21 is an enlarged view of the region D in fig. 20.

Fig. 22 is a top view showing essential parts of a liquid crystal panel, a liquid crystal panel mounting metal, a base frame, and a tolerance absorbing and coupling member in a display device in which the distance between the liquid crystal panel and the base frame in the front-rear direction is shorter than the design dimension in embodiment 1.

Fig. 23 is a principal part rear view showing a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing and coupling member in a display device in which the distance between the liquid crystal panel and the base frame in the front-rear direction is shorter than the design dimension in embodiment 1.

Fig. 24 is a perspective view showing essential parts of the rear surfaces of the liquid crystal panel attachment metal fitting, the base frame, and the tolerance absorbing and coupling member in the display device in the case where the distance between the liquid crystal panel and the base frame in the front-rear direction is shorter than the design dimension in embodiment 1, and corresponds to fig. 21.

Fig. 25 is a top view showing essential parts of the liquid crystal panel, the liquid crystal panel mounting metal, the base frame, and the tolerance absorbing and coupling member in the display device in the case where the distance between the liquid crystal panel and the base frame in the front-rear direction is longer than the design dimension in embodiment 1.

Fig. 26 is a rear view of essential parts of a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing coupling member in a display device according to embodiment 1, in which the distance between the liquid crystal panel and the base frame in the front-rear direction is longer than the design dimension.

Fig. 27 is a perspective view showing essential parts of the rear surfaces of the liquid crystal panel attachment metal fitting, the base frame, and the tolerance absorption coupling member in the display device in the case where the distance between the liquid crystal panel and the base frame in the front-rear direction is longer than the design dimension in embodiment 1, and corresponds to fig. 21.

Fig. 28 is a top plan view of essential parts of a liquid crystal panel, a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing and coupling member in a display device in which the lateral dimensions of a front panel and a base frame in embodiment 1 are the minimum dimensions of dimensional tolerances.

Fig. 29 is a principal rear view showing a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing and coupling member in a display device in which the dimension in the lateral direction of the front panel and the base frame is the minimum dimension of the dimensional tolerance in embodiment 1.

Fig. 30 is a perspective view showing essential parts of the rear side of the liquid crystal panel mounting metal fitting, the base frame, and the tolerance absorbing and coupling member in the display device in the case where the dimension in the left-right direction of the front panel and the base frame is the minimum dimension of the dimensional tolerance in embodiment 1, and corresponds to fig. 21.

Fig. 31 is a top plan view of essential parts of a liquid crystal panel, a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing coupling member in a display device according to embodiment 1, in a case where the lateral dimensions of the front panel and the base frame are the maximum dimensions of the dimensional tolerance.

Fig. 32 is a principal rear view showing a liquid crystal panel mounting metal fitting, a base frame, and a tolerance absorbing and coupling member in a display device in which the lateral dimensions of the front panel and the base frame in embodiment 1 are the maximum dimensions of the dimensional tolerance.

Fig. 33 is a perspective view of essential parts of the rear side of the liquid crystal panel attachment fitting, the base frame, and the tolerance absorbing and coupling member in the display device in the case where the lateral dimensions of the front panel and the base frame in embodiment 1 are the maximum dimensions of the dimensional tolerance, and corresponds to fig. 21.

Fig. 34 is a schematic cross-sectional view showing a schematic structure of another display device according to embodiment 1 of the present invention, and corresponds to fig. 1.

Fig. 35 is a schematic cross-sectional view showing a schematic structure of another display device according to embodiment 1 of the present invention, and corresponds to fig. 1.

Detailed Description

Hereinafter, a display device and a tolerance-absorbing coupling member according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments.

Embodiment 1.

Fig. 1 is a schematic cross-sectional view showing a schematic structure of a display device 100 according to embodiment 1 of the present invention. Fig. 2 is a side view showing the structure of the tolerance absorbing coupling member 10 of the display device 100 shown in fig. 1. Fig. 3 is a plan view illustrating the structure of the tolerance absorbing coupling member 10 of the display device 100 shown in fig. 1. Fig. 4 is a schematic view showing a method of fastening a screw 22 for fixing the 1 st connecting portion 11 of the tolerance absorbing coupling member 10 and the 2 nd fitting metal portion 4b of the liquid crystal panel fitting metal 4 at the time of assembling the display device 100 shown in fig. 1, and a method of fastening a screw 22 for fixing the 2 nd connecting portion 12 of the tolerance absorbing coupling member 10, the base frame 5, and the front panel 1. In embodiment 1, the up-down direction in fig. 1 is defined as the front-back direction in the display device 100, the left-right direction in fig. 1 is defined as the left-right direction in the display device 100, and the depth direction of the paper surface in fig. 1 is defined as the up-down direction in the display device 100. In the front-rear direction, the side where the front panel 1 is disposed is the front, and the side where the base frame 5 is disposed is the rear. The rear direction can be, in other words, a direction perpendicular to the front surface of the front panel 1, that is, the front surface 1c of the frame-like portion 1a, from the touch panel 2 toward the liquid crystal panel 3. The back surface side is rearward in the front-rear direction.

The display device 100 according to embodiment 1 includes a front panel 1, a touch panel 2, a liquid crystal panel 3, a liquid crystal panel attachment fitting 4, a base frame 5, and a tolerance absorbing coupling member 10.

The front panel 1 is in the form of a frame having an opening 1e formed therein, and is made of resin. The front panel 1 has a frame-like portion 1a having a rectangular shape, and a projecting portion 1b projecting from the frame-like portion 1a perpendicularly to the rear surface side. The back surface 2a of the touch panel 2 is adhesively fixed to the front surface 1c of the frame-shaped portion 1a, which is the front surface of the front panel 1, via a 1 st adhesive layer 21 a. A screw hole 1d serving as a screw hole is provided in an end surface of the rear surface side of the projecting portion 1b.

The touch panel 2 is flat, and the outer peripheral edge of the back surface 2a is adhesively fixed to the front surface 1c of the frame portion 1a of the front panel 1 via the 1 st adhesive layer 21a so as to close the opening 1e of the front panel 1 from the front surface side.

The liquid crystal panel 3 is flat and has a front surface 3a adhered and fixed to the back surface 2a of the touch panel 2 by a 2 nd adhesive layer 21b in a state parallel to the front panel 1.

The liquid crystal panel attachment fitting 4 is screwed to the end face 3b of the liquid crystal panel 3 with screws 22 in a state of protruding from the liquid crystal panel 3 perpendicularly to the back side. The liquid crystal panel attachment metal fitting 4 includes a 1 st attachment metal fitting portion 4a disposed in a state of projecting perpendicularly to the back surface side, and a 2 nd attachment metal fitting portion 4b extending obliquely from an end portion on the back surface side of the 1 st attachment metal fitting portion 4 a. The liquid crystal panel attachment fitting 4 may be attached to the liquid crystal panel 3 at a position other than the end face 3b.

The 2 nd mounting bracket part 4b is an inclined part that is inclined toward the inside of the rear surface 5b of the base frame 5 as it goes toward the rear, and is disposed on the rear surface side of the base frame 5. The 2 nd attachment fitting portion 4b is provided with a screw hole 4c as a screw hole.

The base chassis 5 is flat and disposed on the rear surface side of the liquid crystal panel 3 in a state parallel to the touch panel 2. The base frame 5 is provided with a through hole 5a as a screw hole at a position corresponding to the screw hole 1d of the front panel 1. The through hole 5a has a diameter larger than a size through which the screw 22 can be inserted. Thus, the base frame 5 is displaceable in the right-left direction within the range of the diameter of the through hole 5a at the position where the screw 22 inserted through the through hole 5a is inserted.

The tolerance absorbing coupling members 10 are provided in pairs so as to face outer peripheral portions adjacent to a pair of opposing sides in the outer shape of the base frame 5. The pair of tolerance absorbing coupling members 10 provided in an opposing state are disposed in a left-right symmetrical state at the same position in the vertical direction in the display device 100. The tolerance absorbing coupling member 10 has a 1 st coupling part 11 and a 2 nd coupling part 12. As shown in fig. 1 to 3, the tolerance absorbing coupling member 10 has a bent shape in which the 2 nd coupling part 12 is bent and extended from an end of the 1 st coupling part 11.

The 1 st coupling part 11 is fixed to the 2 nd mounting bracket part 4b which is an inclined part of the liquid crystal panel mounting bracket 4. The 1 st coupling part 11 is provided with a 1 st through hole 13 as a long hole for screwing to the 2 nd mounting fixture part 4b as the inclined part of the liquid crystal panel mounting fixture 4 at a position corresponding to the screw hole 4c of the 2 nd mounting fixture part 4b. The 1 st through hole 13 is provided in a state where the longitudinal direction extends in the direction in which the 1 st coupling part 11 and the 2 nd coupling part 12 are arranged. The size of the 1 st through hole 13 is a size that allows the tolerance absorbing/coupling member 10 to be screwed in a movable manner at the screw portion of the screw 22 in the direction in which the 1 st coupling portion 11 and the 2 nd coupling portion 12 are arranged. The dimension of the 1 st through hole 13 in the width direction is larger than the diameter of the screw portion of the screw 22 inserted into the 1 st through hole 13, and is set to a dimension smaller than the diameter of the head portion of the screw 22.

The 1 st coupling part 11 is inserted with a screw 22 from the back side in a state where the front surface 11a of the 1 st coupling part 11 is in contact with the back surface 4d of the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4, and is screwed with the 2 nd mounting fitting part 4b from the back side by the screw 22.

The 2 nd coupling part 12 is bent and extended from an end of the 1 st coupling part 11, and the 1 st coupling part 11 has an inclination of the liquid crystal panel attachment fitting 4, that is, an inclination along the 2 nd attachment fitting part 4b. That is, the tolerance absorbing coupling member 10 has a bent shape bent in the front-rear direction. The 2 nd connecting portion 12 is fixed to the base frame 5 and the front panel 1. The 2 nd coupling portion 12 is provided with a 2 nd through hole 14, which is a long hole for screw fastening to the front panel 1, at a position corresponding to the screw hole 1d of the front panel 1. The 2 nd through hole 14 also functions as a long hole for screw fastening with the base frame 5, as will be described later.

The 2 nd through hole 14 is provided in a state where the longitudinal direction extends in the direction in which the 1 st coupling part 11 and the 2 nd coupling part 12 are arranged. The size of the 2 nd through hole 14 is a size that allows the tolerance absorbing/coupling member 10 to be screwed in a direction in which the 1 st coupling part 11 and the 2 nd coupling part 12 are arranged, with the screw 22 being movable. The dimension of the 2 nd through hole 14 in the width direction is set to be larger than the diameter of the screw portion of the screw 22 inserted into the 2 nd through hole 14 and smaller than the diameter of the head portion of the screw 22. The 2 nd coupling part 12 is screwed with the outer peripheral edge of the base frame 5 and the convex portion 1b of the front panel 1 from the back side by screws 22 in a state where the front surface 12a of the 2 nd coupling part 12 is in contact with the outer peripheral edge of the back surface 5b of the base frame 5 and the outer peripheral edge of the base frame 5 is sandwiched between the 2 nd coupling part 12 and the convex portion 1b of the front panel 1.

The tolerance absorbing coupling member 10 is configured such that the 1 st coupling portion 11 is screwed to the 2 nd mounting fitting portion 4b of the liquid crystal panel mounting fitting 4, and the 2 nd coupling portion 12 is screwed to the outer peripheral edge portion of the base frame 5 and the projecting portion 1b of the front panel 1, thereby coupling and fixing the base frame 5, the front panel 1, and the liquid crystal panel mounting fitting 4.

The tolerance absorbing coupling member 10 has a function as a dimensional tolerance absorbing portion that absorbs a dimensional tolerance of the outer dimensions of the respective members to which the tolerance absorbing coupling member 10 is coupled or an installation dimensional tolerance generated by stacking the dimensional tolerances of the outer dimensions of the respective members. The display device 100 connected by using the tolerance absorption connection member 10 has a structure that absorbs dimensional tolerances of the constituent members.

The tolerance absorbing coupling member 10 is provided with a 1 st through hole 13 as a screw hole in the 1 st coupling portion 11. The 2 nd coupling portion 12 is provided with a 2 nd through hole 14 as a screw hole. Thus, the tolerance absorbing coupling member 10 can be fixed by being positionally shifted in the left-right direction from the design position in a range where the screw 22 for fixing the 2 nd mounting bracket part 4b of the liquid crystal panel mounting bracket 4 and the 1 st coupling part 11 can be inserted into the 1 st through hole 13 and in a range where the screw 22 for fixing the base frame 5, the front panel 1, and the 2 nd coupling part 12 can be inserted into the 2 nd through hole 14.

Therefore, in the display device 100, when the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 varies from the design dimension, the 2 nd attachment fitting portion 4b of the liquid crystal panel attachment fitting 4 and the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 can be fixed by the screw 22, and the base frame 5, the front panel 1, and the 2 nd coupling portion 12 of the tolerance absorbing coupling member 10 can be fixed by the screw 22, in a state where the position of the tolerance absorbing coupling member 10 is shifted in the left-right direction from the design position.

Accordingly, the display device 100 can reliably connect and fix the liquid crystal panel 3 and the base frame 5 by absorbing the influence of the variation in the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 by the tolerance absorbing and connecting member 10. That is, the display device 100 can absorb the stacking dimension tolerance in which the dimension tolerances of the respective members of the front panel 1, the touch panel 2, the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, and the base frame 5 are stacked, and reliably connect and fix the liquid crystal panel 3 and the base frame 5.

When the lateral dimensions of the front panel 1 and the base frame 5 vary from the designed dimensions, the 2 nd attachment fitting portion 4b of the liquid crystal panel attachment fitting 4 and the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 may be fixed by the screw 22, and the base frame 5, the front panel 1, and the 2 nd coupling portion 12 of the tolerance absorbing coupling member 10 may be fixed by the screw 22, in a state where the position of the tolerance absorbing coupling member 10 is disposed at the designed position in the lateral direction. The position of the screw 22 in the 1 st through hole 13 of the 1 st coupling part 11 is the central position in the longitudinal direction of the 1 st through hole 13. On the other hand, the position of the screw 22 in the 2 nd through hole 14 of the 2 nd coupling part 12 is shifted in the longitudinal direction of the 2 nd through hole 14 from the center toward the inner side of the base frame 5 or toward the outer peripheral side of the base frame 5. Thus, the tolerance absorbing/coupling member 10 absorbs the influence of the variation in the dimensional tolerance between the front panel 1 and the base frame 5, and the liquid crystal panel 3 and the base frame 5 can be reliably coupled and fixed.

The tolerance absorbing and connecting member 10 has a bent shape and also has the 1 st through hole 13 and the 2 nd through hole 14, so that the positional deviation of the components of the display device 100 due to the vertical stacking dimension tolerance of the components of the display device 100 and the positional deviation of the components of the display device 100 due to the horizontal dimension tolerance of the components of the display device 100 can be converted into the positional deviation of the tolerance absorbing and connecting member 10 in the horizontal direction and absorbed.

Here, a method of assembling the display device 100 configured as described above will be described. First, the touch panel 2 and the liquid crystal panel 3 are adhesively fixed by the 2 nd adhesive layer 21 b. Next, the liquid crystal panel attachment metal fitting 4 is screwed to the end face 3b of the liquid crystal panel 3 by the screw 22. Next, the front panel 1 and the touch panel 2 are adhesively fixed by the 1 st adhesive layer 21 a. Next, the front panel 1, the base frame 5, and the 2 nd connecting portion 12 of the tolerance absorbing connecting member 10 are screwed by the screws 22. Next, the liquid crystal panel mounting metal 4 and the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 are screwed by the screw 22.

The tolerance absorbing coupling member 10 has a bending angle of the 1 st coupling part 11 and the 2 nd coupling part 12 of 120 ° to 170 °. The bending angle is an angle formed by the back surface 11b of the 1 st coupling part 11 and the back surface 12b of the 2 nd coupling part 12, and is an angle formed by a surface of the 1 st coupling part 11 on which the screw 22 is inserted and a surface of the 2 nd coupling part 12 on which the screw 22 is inserted. The 2 nd fitting part 4b of the liquid crystal panel fitting 4 is provided so as to be inclined at the same angle as the bending angle of the touch panel 2, corresponding to the bending angle of the tolerance absorbing coupling member 10. Thus, as shown in fig. 4, the direction in which the screw 22 is tightened by the electric driver 30 when the base frame 5 and the front panel 1 are coupled and fixed can be regarded as only 1 direction of the vertical tightening from the back side.

That is, the screw fastening with the screw 22 for fixing the 1 st coupling part 11 of the tolerance absorbing coupling member 10 and the 2 nd mounting bracket part 4b of the liquid crystal panel mounting bracket 4, and the screw fastening with the screw 22 for fixing the 2 nd coupling part 12 of the tolerance absorbing coupling member 10, the base frame 5, and the front panel 1 can be performed only in 1 direction of the vertical fastening from the back side.

The vertical tightening from the back side refers to a screw tightening method in which the grip portion of the electric driver 30 is held in the opposite hand, the electric driver 30 is lowered from above, and the screw 22 is tightened so as to advance in a direction approaching the vertical direction. The lateral tightening is a screw tightening method in which the grip portion of the electric screwdriver 30 is held in the hand so as to be held in the front hand, the electric screwdriver 30 is moved in the direction approaching the horizontal direction, and the screw 22 is tightened so as to travel in the direction approaching the horizontal direction. The backhand grip here refers to a grip manner in which the small thumb approaches the screw 22 in the extending direction of the grip portion of the electric screwdriver 30. The front-hand grip is a grip in which the thumb and the index finger are close to the screw 22 in the extending direction of the grip portion of the electric screwdriver 30. In addition, the electric screwdriver 30 may be simply referred to as a screwdriver in the following.

By using the tolerance absorbing and coupling member 10, when the screw 22 that couples and fixes the base frame 5 and the front panel 1 is fastened by manual operation using the electric screwdriver 30, the screw 22 is fastened by the electric screwdriver 30 while observing the screw hole. When fastening the screws 22 by vertical fastening from the back side, the back side of the assembly during assembly of the display device 100 is disposed to be the upper side, and the screws are fastened while viewing the screw holes from the upper side, so that the work is easy.

On the other hand, when the base frame 5 and the front panel 1 are fastened and fixed together, if vertical fastening from the back side and horizontal fastening from the left-right direction are mixed, the back side of the assembly during assembly is disposed on the upper side and fastening of the screws 22 is performed by vertical fastening, and in addition, the screws must be fastened while looking into the screw holes from the horizontal direction and fixing the components by hand, which makes the work difficult. The lateral tightening here is a screw tightening in which a screw is driven in the left-right direction to tighten the screw.

In order to facilitate the lateral fastening operation, the following operations are required: the operation of changing the posture of the assembly during the assembly in which the rear surface side is disposed on the upper side and the vertical fastening is performed, reversing the orientation of the grip portion of the electric screwdriver 30, and replacing the electric screwdriver 30 with another screwdriver is performed. Therefore, when the base frame 5 and the front panel 1 are fastened and fixed, if the vertical fastening from the back side and the horizontal fastening from the left-right direction are mixed, the work becomes complicated, and the number of work steps increases.

However, by using the tolerance absorbing coupling member 10, it is not necessary to change the posture of the assembly during assembly, and it is not necessary to reverse the direction of the grip portion of the electric screwdriver 30, and it is possible to avoid the work of replacing the electric screwdriver 30 with another screwdriver. Therefore, by using the tolerance absorbing coupling member 10, the assembling work when the base frame 5 and the front panel 1 are coupled and fixed becomes easy, the number of working steps for the assembling work can be reduced, and the assembling of the display device 100 can be easily performed in a short time.

In the above description, the case where the 2 nd coupling part 12 is screwed to the outer peripheral edge of the base frame 5 and the convex portion 1b of the front panel 1 is shown, but the 2 nd coupling part 12 may be screwed to the outer peripheral edge of the base frame 5 by screws 22 and may be screwed to the outer peripheral edge of the base frame 5 and the convex portion 1b of the front panel 1 by other screws 22.

Here, an evaluation test concerning the bending angle of the tolerance absorbing coupling member 10 will be described. Fig. 5 is a diagram showing the structure of a test piece for qualitative evaluation of the bending angle of the tolerance absorbing coupling member 10 of the display device 100 shown in fig. 1. In fig. 5, the same components as those in fig. 1 are denoted by the same reference numerals. In addition, the direction in fig. 5 is the same as the case of fig. 1.

Fig. 6 and 7 are diagrams showing the results of an evaluation test concerning the bending angle of the tolerance absorbing coupling member 10 of the display device 100 shown in fig. 1. The evaluation test was conducted by holding the electric screwdriver 30 by a person to screw the screw 22 until the bending angle θ of the tolerance absorbing coupling member 10 was changed from 90 ° to 180 ° as shown in fig. 6 and 7, and easily performing the screw fastening work in the case of which grip portion the electric screwdriver 30 is. The case where the bending angle θ is 90 ° is a case where the 2 nd coupling part 12 is bent at a right angle to the 1 st coupling part 11. In this case, the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 and the 1 st mounting bracket portion 4a are parallel to each other.

The "grip portion in the vertical direction" in fig. 6 and 7 shows a case where the screw 22 for fixing the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 and the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 is fastened by a screw in a state where the grip portion of the electric screwdriver 30 is held by the above-described opposite hand. The vertical direction is the same direction as the up-down direction. The "grip portion in the horizontal direction" in fig. 6 and 7 shows a case where the screw 22 for fixing the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 and the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 is fastened by a screw in a state where the grip portion of the electric screwdriver 30 is held by the above-described front hand.

As a result of the evaluation test, as shown in fig. 6 and 7, it was found that "if the grip portion of the driver is vertically lowered to fasten the screw 22," the easy fastening "was an angle in the range of 120 ° to 180 ° in the" bending angle within the allowable range of fastening ease "of the evaluation. However, even when the bending angle is 180 °, the evaluation "fastening is easy if the grip portion is a screwdriver that is vertically lowered to fasten the screw 22" is obtained, but when the bending angle is 180 °, the above-described function of absorbing the stacking dimension tolerance of the components of the display device 100 cannot be obtained. Therefore, the bending angle of the tolerance absorbing coupling member 10 is set to 120 ° to 170 °.

In the case where the screw 22 for fastening and fixing the base frame 5 and the front panel 1 is automatically fastened by using an automatic screw fastening device in a state where the rear surface side of the assembly during the assembly of the display device 100 is disposed on the upper side, the electric driver 30 may be disposed only for the vertical fastening. Therefore, the structure of the assembly device can be simplified, and the cost of the automatic screw fastening device can be reduced to a low cost.

A typical articulated robot arm can move about 6 axes, i.e., X axis, Y axis, Z axis, pitch axis, roll axis, and yaw axis. If the articulated robot is used, an automatic screw fastening device capable of automatic screw fastening can be realized in a wider range of angles.

In a state where the rear surface side of the assembly during the assembly of the display device 100 is disposed to be the upper side, when the screws 22 for fastening and fixing the base frame 5 and the front panel 1 are automatically fastened by using the automatic screw fastening device, a universal joint can be used. Fig. 8 is a schematic diagram showing an example of a universal joint 40 that can be used in the automatic screw fastening device used when the display device 100 shown in fig. 1 is assembled.

The universal joint 40 shown in fig. 8 has: a 1 st part 41 connected to a main body side of the automatic screw fastening device; a 2 nd portion 43 having a tip of a driver mounted thereon; and a joint part 42 connecting the 1 st part 41 and the 2 nd part 43. The 1 st portion 41 is arranged in the longitudinal direction in the same direction as the front-rear direction of the display device 100. The universal joint 40 can swing 30 ° about a single side. By using the universal joint 40, the screw 22 for fixing the 1 st connecting portion 11 of the tolerance absorbing and coupling member 10 having the bending angle of 150 ° and the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 can be screwed.

By using the universal joint 40 instead of the pitch axis, roll axis, and yaw axis, it is possible to realize an automatic screw fastening device with high performance at a lower cost than a general articulated robot arm.

By mounting the driver bit of the screwdriver on the universal joint 40 as described above, the screwing of the screw 22 for fixing the 2 nd coupling part 12 of the tolerance absorbing coupling member 10, the base frame 5, and the front panel 1, and the screwing of the screw 22 for fixing the 1 st coupling part 11 of the tolerance absorbing coupling member 10 and the 2 nd fitting part 4b of the liquid crystal panel fitting 4 can be automatically and continuously performed.

Fig. 9 is a schematic diagram illustrating a swing angle of the universal joint 50 in the case of 2-coupling the universal joint 40 shown in fig. 8. The universal joint 50 shown in fig. 9 includes a 1 st portion 41, a 2 nd portion 43, a 3 rd portion 45, a joint portion 42 connecting the 1 st portion 41 and the 2 nd portion 43, and a joint portion 44 connecting the 2 nd portion 43 and the 3 rd portion 45. In the universal joint 50, a tip of a screwdriver is mounted on a tip of the 3 rd portion 45. The 3 rd portion 45 can swing 30 ° on one side via the joint portion 44. Thereby, the universal joint 50 as a whole can swing by 60 °.

By using the universal joint 50, the 1 st coupling part 11 of the tolerance absorbing coupling member 10 having the bending angle of 120 ° and the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4 can be fastened by the screw 22.

By fixing the liquid crystal panel 3 and the base frame 5 while absorbing the stacking dimensional tolerance of the components of the display device 100, it is possible to reduce the positional deviation of the components of the display device 100 including the liquid crystal panel 3 and the base frame 5 and the positional deviation of the relative positional relationship between the components of the display device 100, as compared with the case where the liquid crystal panel 3 and the base frame 5 are directly coupled and fixed. This can reduce the strain applied to each member of the display device 100, and can suppress a failure and a reduction in long-term reliability caused by the strain applied to the member.

Further, since the force of pressing the touch panel 2 so as to bend it from the back side or the force of pulling the touch panel 2 to the back side so as to bend it is reduced by reducing the strain applied to each member of the display device 100, the force of peeling off the adhesive used for the 2 nd adhesive layer 21b that bonds and fixes the touch panel 2 and the liquid crystal panel 3 and the force of peeling off the adhesive used for the 1 st adhesive layer 21a that bonds and fixes the touch panel 2 and the front panel 1 are reduced.

This can avoid damage such as air bubbles entering the 2 nd adhesive layer 21b due to peeling of the 2 nd adhesive layer 21b from at least one of the touch panel 2 and the liquid crystal panel 3, or peeling of the 2 nd adhesive layer 21b from at least one of the touch panel 2 and the liquid crystal panel 3. When bubbles enter the 2 nd adhesive layer 21b, if the user views the liquid crystal panel 3 of the display device 100, the bubbles are reflected in the display image, resulting in a display failure.

In addition, damage that the touch panel 2 is peeled off from the front panel 1 by the peeling of the 2 nd adhesive layer 21b from the touch panel 2 can be avoided. Further, damage that the touch panel 2 is peeled off from the front panel 1 by peeling the 1 st adhesive layer 21a from the touch panel 2 can be avoided.

In addition, by reducing the positional deviation of the components of the display device 100, it is possible to avoid assembly rework due to positional deviation of at least one of the screw hole for screw fastening and the screw hole provided in each component.

In addition, the tolerance absorbing coupling member 10 is made of metal. Thus, the tolerance absorbing/coupling member 10 can electrically connect the noise received by the liquid crystal panel 3 from the outside of the liquid crystal panel 3 and the noise emitted from the liquid crystal panel 3 to the ground, thereby improving the noise resistance of the display device 100. That is, in the display device 100, electricity flows from the liquid crystal panel 3 through the metal liquid crystal panel mounting bracket 4, the metal tolerance absorbing coupling member 10, and the metal base frame 5 to the resin front panel 1, and the front panel 1 serves as a ground.

The tolerance-absorbing coupling member 10 is provided with only 2 long holes for adjusting the position of the member during screw fastening when the display device 100 is assembled. Therefore, the tolerance absorbing coupling member 10 can be positioned at an appropriate position with respect to the front panel 1, the base frame 5, and the liquid crystal panel mounting bracket 4 by performing the screw fastening with the screw 22 only 1 time without performing the temporary fixing and performing the positioning with respect to the front panel 1, the base frame 5, and the liquid crystal panel mounting bracket 4. Thus, in the display device 100, the front panel 1 and the liquid crystal panel attachment fitting 4 can be easily coupled with each other in a short operation time.

Next, a function of absorbing the stacking dimension tolerance of the components by the tolerance absorbing coupling member 10 of the display device 100 will be specifically described. First, a case will be described in which each member of the front panel 1, the touch panel 2, the liquid crystal panel 3, the liquid crystal panel attachment metal 4, and the base frame 5 constituting the display device 100 is manufactured in a designed size. Fig. 10 to 12 are diagrams showing the display device 100 in a case where the respective components are manufactured in the designed dimensions, and the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is in accordance with the designed dimensions.

Fig. 10 is a perspective view of a display device 100 manufactured to have a designed size in embodiment 1. Fig. 11 is a front view of the display device 100 manufactured to have a designed size in embodiment 1. Fig. 12 is a cross-sectional view XII-XII in fig. 11.

Fig. 13 to 21 are views showing the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in a case where the respective constituent members are manufactured in designed dimensions. That is, fig. 13 to 21 show a state in which the front panel 1 and the touch panel 2 are removed from the display device 100 in a case where the respective constituent members are manufactured in designed sizes.

Fig. 13 is a perspective view showing a state where the front panel 1 and the touch panel 2 are removed from fig. 10. Fig. 14 is a front view showing a state in which the front panel 1 and the touch panel 2 are removed from fig. 11. Fig. 15 is a top view showing the liquid crystal panel 3, the liquid crystal panel mounting metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 is designed in accordance with the design dimensions in embodiment 1. Fig. 16 is an enlarged view of the region B in fig. 15. Fig. 17 is a left side view of the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 according to embodiment 1, in a case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is designed. Fig. 18 is a rear view showing the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is designed according to the design dimensions in embodiment 1. Fig. 19 is an enlarged view of the region C in fig. 18. Fig. 20 is an oblique view in the sagittal direction a of fig. 15. Fig. 21 is an enlarged view of the region D in fig. 20.

When the respective members constituting the display device 100 are manufactured in the designed dimensions, the positional deviation of the members of the display device 100 due to the stacking dimension tolerance of the members of the display device 100 in the vertical direction and the positional deviation of the members of the display device 100 due to the stacking dimension tolerance of the members of the display device 100 in the horizontal direction do not occur. In this case, as shown in fig. 17 to 21, the position of the screw 22 in the 1 st through hole 13 of the 1 st coupling part 11 is a central position in the longitudinal direction of the 1 st through hole 13. As shown in fig. 17 to 21, the position of the screw 22 in the 2 nd through hole 14 of the 2 nd coupling part 12 is a central position in the longitudinal direction of the 2 nd through hole 14.

Next, in the display device 100, a case where the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 varies from the design size will be described. When the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 varies from the design dimension, the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 may become shorter than the design dimension, and the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 may become longer than the design dimension.

The case where the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 is shorter than the design size is the case where the liquid crystal panel 3 and the base frame 5 are closer than the design. There are 3 patterns as described below in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design size.

The 1 st embodiment is a case where the thickness of the integrated structure in which the touch panel 2 and the liquid crystal panel 3 are bonded and fixed by the 2 nd adhesive layer 21b and integrated, that is, the size of the integrated structure in the front-rear direction is thicker than the design size due to at least 1 of the dimensional tolerance of the 2 nd adhesive layer 21b and the dimensional tolerance of the liquid crystal panel 3.

The 2 nd pattern is a case where the thickness of the front panel 1 and the base frame 5 in a state of being joined, that is, the size of the front panel 1 and the base frame 5 in a state of being joined in the front-rear direction is thinner than the design size due to the dimensional tolerance of the front panel 1.

Pattern 3 is a case where both of the above-described pattern 1 and pattern 2 occur.

That is, the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design dimension is caused by at least 1 of the dimensional tolerance of the 2 nd adhesive layer 21b, the dimensional tolerance of the liquid crystal panel 3, and the dimensional tolerance of the front panel 1.

Fig. 22 to 24 are diagrams showing the liquid crystal panel 3, the liquid crystal panel attachment metal 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in a case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design dimension. That is, fig. 22 to 24 show a state in which the front panel 1 and the touch panel 2 are removed from the display device 100 in a case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design dimension.

Fig. 22 is a top view showing essential parts of the liquid crystal panel 3, the liquid crystal panel mounting metal fitting 4, the base frame 5, and the tolerance absorbing/coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design dimension in embodiment 1.

Fig. 23 is a rear view showing essential parts of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design dimension in embodiment 1. Fig. 24 is a perspective view showing essential parts on the back side of the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-back direction is shorter than the design dimension in embodiment 1, and corresponds to fig. 21.

When the distance in the front-rear direction between the liquid crystal panel 3 and the base frame 5 is shorter than the design dimension as described above, as shown in fig. 22 to 24, in a state where the position of the tolerance absorbing coupling member 10 is shifted in the left-right direction from the design position toward the outer peripheral side of the base frame 5, the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4 and the 1 st coupling part 11 of the tolerance absorbing coupling member 10 may be fixed by the screw 22, and the base frame 5, the front panel 1, and the 2 nd coupling part 12 of the tolerance absorbing coupling member 10 may be fixed by the screw 22.

In this case, the position of the screw 22 in the 1 st through hole 13 of the 1 st coupling part 11 is shifted from the center in the longitudinal direction of the 1 st through hole 13 toward the inner side of the base frame 5. The position of the screw 22 in the 2 nd through hole 14 of the 2 nd connecting part 12 is shifted from the center in the longitudinal direction of the 2 nd through hole 14 toward the inner side of the base frame 5.

As described above, when the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is shorter than the design dimension, the position of the tolerance absorbing coupling member 10 is shifted in the left-right direction from the design position toward the outer peripheral side of the base frame 5, whereby the influence of the tolerance absorbing coupling member 10 on the variation in the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is absorbed, and the liquid crystal panel 3 and the base frame 5 can be reliably coupled and fixed. This can prevent the 2 nd adhesive layer 21b from peeling off from at least one of the touch panel 2 and the liquid crystal panel 3 and causing air bubbles to enter the 2 nd adhesive layer 21 b.

When the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension, there are 3 patterns as follows.

The 4 th embodiment is a case where the thickness of the integrated structure in which the touch panel 2 and the liquid crystal panel 3 are bonded and fixed by the 2 nd adhesive layer 21b and integrated, that is, the size of the integrated structure in the front-rear direction is smaller than the design size due to at least 1 of the dimensional tolerance of the 2 nd adhesive layer 21b and the dimensional tolerance of the liquid crystal panel 3.

The 5 th form is a case where the thickness of the front panel 1 and the base frame 5 in a state of being joined, that is, the dimension of the front panel 1 and the base frame 5 in a state of being joined in the front-rear direction is thicker than the design dimension due to the dimensional tolerance of the front panel 1.

Pattern 6 is a case where both of the above-described patterns 4 and 5 occur.

That is, the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension is caused by at least 1 of the dimensional tolerance of the 2 nd adhesive layer 21b, the dimensional tolerance of the liquid crystal panel 3, and the dimensional tolerance of the front panel 1.

Fig. 25 to 27 are diagrams showing the liquid crystal panel 3, the liquid crystal panel attachment metal 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in a case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension. That is, fig. 25 to 27 show a state in which the front panel 1 and the touch panel 2 are removed from the display device 100 in a case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension.

Fig. 25 is a top plan view showing essential parts of the liquid crystal panel 3, the liquid crystal panel mounting metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension in embodiment 1.

Fig. 26 is a rear view showing essential parts of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension in embodiment 1. Fig. 27 is a perspective view showing essential parts of the back side of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension in embodiment 1, and corresponds to fig. 21.

When the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension as described above, as shown in fig. 25 to 27, in a state where the position of the tolerance absorbing coupling member 10 is shifted in the left-right direction from the design position toward the inner side of the base frame 5, the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4 and the 1 st coupling part 11 of the tolerance absorbing coupling member 10 may be fixed by the screw 22, and the base frame 5, the front panel 1, and the 2 nd coupling part 12 of the tolerance absorbing coupling member 10 may be fixed by the screw 22.

In this case, the position of the screw 22 in the 1 st through hole 13 of the 1 st coupling part 11 is shifted from the center in the longitudinal direction of the 1 st through hole 13 toward the outer peripheral side of the base frame 5. The position of the screw 22 in the 2 nd through hole 14 of the 2 nd coupling part 12 is shifted from the center in the longitudinal direction of the 2 nd through hole 14 toward the outer peripheral side of the base frame 5.

As described above, even when the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is longer than the design dimension, the tolerance absorbing coupling member 10 is displaced in the left-right direction from the design position toward the inside of the base frame 5, whereby the influence of the fluctuation in the distance between the liquid crystal panel 3 and the base frame 5 in the front-rear direction is absorbed by the tolerance absorbing coupling member 10, and the liquid crystal panel 3 and the base frame 5 can be reliably coupled and fixed. This can avoid damage such as peeling of the 1 st adhesive layer 21a from the touch panel 2.

Next, a case where the lateral dimensions of the front panel 1 and the base frame 5 in the display device 100 vary from the designed dimensions will be described. When the dimension in the lateral direction of the front panel 1 and the base frame 5 varies from the design dimension, for example, the dimension in the lateral direction of the front panel 1 and the base frame 5 may be the minimum dimension of the dimensional tolerance and the dimension in the lateral direction of the front panel 1 and the base frame 5 may be the maximum dimension of the dimensional tolerance.

Fig. 28 to 30 are diagrams showing the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the dimension in the left-right direction of the front panel 1 and the base frame 5 is the minimum dimension of the dimensional tolerance. That is, fig. 28 to 30 show a state in which the front panel 1 and the touch panel 2 are removed from the display device 100 in a case where the dimension of the front panel 1 and the base frame 5 in the left-right direction is the minimum dimension of the dimensional tolerance.

Fig. 28 is a top plan view showing essential parts of the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 according to embodiment 1 in the case where the dimension of the front panel 1 and the base frame 5 in the left-right direction is the minimum dimension of the dimensional tolerance. Fig. 29 is a rear view showing essential parts of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the dimension in the left-right direction of the front panel 1 and the base frame 5 is the minimum dimension of the dimensional tolerance in embodiment 1. Fig. 30 is a perspective view showing essential parts of the rear side of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the dimension of the front panel 1 and the base frame 5 in the lateral direction is the minimum dimension of the dimensional tolerance in embodiment 1, and corresponds to fig. 21.

As described above, when the dimension in the left-right direction of the front panel 1 and the base frame 5 is the minimum dimension of the dimensional tolerance, the screw hole 1d of the front panel 1 is formed to be shifted in the left-right direction toward the inner side of the base frame 5. The through hole 5a of the base frame 5 is formed so as to be offset in the left-right direction toward the inside of the base frame 5. In this case, as shown in fig. 28 to 30, in a state where the position of the tolerance absorbing coupling member 10 is arranged at the design position in the left-right direction, the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4 and the 1 st coupling part 11 of the tolerance absorbing coupling member 10 may be fixed by the screw 22, and the base frame 5, the front panel 1, and the 2 nd coupling part 12 of the tolerance absorbing coupling member 10 may be fixed by the screw 22.

In this case, the position of the screw 22 in the 1 st through hole 13 of the 1 st coupling part 11 is the central position in the longitudinal direction of the 1 st through hole 13. On the other hand, the position of the screw 22 in the 2 nd through hole 14 of the 2 nd coupling part 12 is shifted from the center in the longitudinal direction of the 2 nd through hole 14 toward the inner side of the base frame 5.

As described above, even when the dimension in the left-right direction of the front panel 1 and the base frame 5 is the minimum dimension of the dimensional tolerance, the influence of the tolerance absorbing and coupling member 10 on the variation in the dimensional tolerance of the front panel 1 and the base frame 5 is absorbed by setting the position of the tolerance absorbing and coupling member 10 to the design position in the left-right direction, and the liquid crystal panel 3 and the base frame 5 can be reliably coupled and fixed. That is, the 2 nd through hole 14 of the 2 nd connecting portion 12 absorbs the positional displacement of the screw hole 1d of the front panel 1 and the through hole 5a of the base frame 5 caused by the variation in the dimensional tolerance between the front panel 1 and the base frame 5, thereby reducing the strain applied to the respective members of the display device 100 and reliably connecting and fixing the liquid crystal panel 3 and the base frame 5.

In the case where the dimension of the liquid crystal panel 3 in the left-right direction is the maximum dimension of the dimensional tolerance, the positional relationship in the left-right direction among the front panel 1, the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 may be as shown in fig. 28 to 30. Accordingly, the tolerance absorbing/coupling member 10 can absorb the influence of the variation in the dimensional tolerance of the liquid crystal panel 3 in the left-right direction, and reliably couple and fix the liquid crystal panel 3 and the base frame 5.

Fig. 31 to 33 are diagrams showing the liquid crystal panel 3, the liquid crystal panel attachment metal 4, the base frame 5, and the tolerance absorbing and coupling member 10 in the display device 100 in a case where the lateral dimensions of the front panel 1 and the base frame 5 are the maximum dimensions of the dimensional tolerance. That is, fig. 31 to 33 show a state in which the front panel 1 and the touch panel 2 are removed from the display device 100 in a case where the dimension of the front panel 1 and the base frame 5 in the left-right direction is the maximum dimension of the dimensional tolerance.

Fig. 31 is a top plan view showing essential parts of the liquid crystal panel 3, the liquid crystal panel mounting metal fitting 4, the base frame 5, and the tolerance absorbing and coupling member 10 in the display device 100 in the case where the lateral dimensions of the front panel 1 and the base frame 5 are the maximum dimensions of the dimensional tolerance in embodiment 1. Fig. 32 is a rear view showing essential parts of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the lateral dimensions of the front panel 1 and the base frame 5 are the maximum dimensions of the dimensional tolerance in embodiment 1. Fig. 33 is a perspective view showing essential parts of the rear side of the liquid crystal panel attachment fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 in the display device 100 in the case where the lateral dimensions of the front panel 1 and the base frame 5 are the maximum dimensional tolerances in embodiment 1, and corresponds to fig. 21.

As described above, when the dimension in the left-right direction of the front panel 1 and the base frame 5 is the maximum dimension of the dimensional tolerance, the screw hole 1d of the front panel 1 is formed to be shifted in the left-right direction toward the outer peripheral side of the base frame 5. The through hole 5a of the base frame 5 is formed so as to be offset in the left-right direction toward the outer peripheral side of the base frame 5. In this case, as shown in fig. 31 to 33, in a state where the position of the tolerance absorbing coupling member 10 is arranged at the design position in the left-right direction, the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4 and the 1 st coupling part 11 of the tolerance absorbing coupling member 10 may be fixed by the screw 22, and the base frame 5, the front panel 1, and the 2 nd coupling part 12 of the tolerance absorbing coupling member 10 may be fixed by the screw 22.

In this case, the position of the screw 22 in the 1 st through hole 13 of the 1 st coupling part 11 is the central position in the longitudinal direction of the 1 st through hole 13. On the other hand, the position of the screw 22 in the 2 nd through hole 14 of the 2 nd coupling part 12 is shifted from the center in the longitudinal direction of the 2 nd through hole 14 toward the outer peripheral side of the base frame 5.

As described above, even when the dimension in the left-right direction of the front panel 1 and the base frame 5 is the maximum dimension of the dimensional tolerance, the influence of the tolerance absorbing and coupling member 10 on the variation in the dimensional tolerance of the front panel 1 and the base frame 5 is absorbed by setting the position of the tolerance absorbing and coupling member 10 to the design position in the left-right direction, and the liquid crystal panel 3 and the base frame 5 can be reliably coupled and fixed. That is, the 2 nd through hole 14 of the 2 nd connecting portion 12 absorbs the positional displacement of the screw hole 1d of the front panel 1 and the through hole 5a of the base frame 5 caused by the variation in the dimensional tolerance between the front panel 1 and the base frame 5, thereby reducing the strain applied to the respective members of the display device 100 and reliably connecting and fixing the liquid crystal panel 3 and the base frame 5.

In the case where the dimension of the liquid crystal panel 3 in the left-right direction is the minimum dimension of the dimensional tolerance, the positional relationship in the left-right direction among the front panel 1, the liquid crystal panel 3, the liquid crystal panel attachment metal fitting 4, the base frame 5, and the tolerance absorbing coupling member 10 may be as shown in fig. 31 to 33. Thus, the tolerance absorbing and connecting member 10 can absorb the influence of the variation in the dimensional tolerance of the liquid crystal panel 3 in the left-right direction, and the liquid crystal panel 3 and the base frame 5 can be reliably connected and fixed.

In the above description, the 1 st through hole 13 and the 2 nd through hole 14 are elongated holes, but the 1 st through hole 13 and the 2 nd through hole 14 may be holes having a diameter larger than the diameter of the screw portion of the screw 22 and smaller than the diameter of the head portion of the screw 22. In this case, the size of the 1 st through hole 13 and the 2 nd through hole 14 is set to a size that allows the tolerance absorbing coupling member 10 to be screwed in a screw portion of the screw 22 movable in the direction in which the 1 st coupling portion 11 and the 2 nd coupling portion 12 are arranged. The same effects as described above can be obtained even when the tolerance-absorbing coupling member 10 has the 1 st through hole 13 and the 2 nd through hole 14 as described above. However, when the 1 st through hole 13 and the 2 nd through hole 14 are long holes, the effect of absorbing the variation in the dimensional tolerance of the above-described members is large.

In the above description, the case where the 1 st connecting portion 11 is attached to the 2 nd fitting part portion 4b inclined with respect to the rear surface 5b of the base frame 5 so as to face the inside of the rear surface 5b of the base frame 5 as it faces rearward is shown in the pair of tolerance absorbing connecting members 10 provided in the left-right direction in an opposed state. The mounting state of the pair of tolerance absorbing coupling members 10 is not limited to this. That is, the 1 st connecting portion 11 may be attached to the 2 nd attachment fitting portion 4b inclined with respect to the rear surface 5b of the base frame 5 so as to face outward of the rear surface 5b of the base frame 5 as it faces rearward in the pair of tolerance absorbing connecting members 10.

Fig. 34 is a schematic cross-sectional view showing a schematic structure of another display device 200 according to embodiment 1 of the present invention, and corresponds to fig. 1. The other display device 200 according to embodiment 1 is a modification of the display device 100 according to embodiment 1. In fig. 34, the same reference numerals are given to components corresponding to those in fig. 1.

In the other display device 200, the pair of tolerance absorbing coupling members 10 provided in the left-right direction in an opposed state are attached with the 1 st coupling portion 11 to the 2 nd mounting bracket portion 4b inclined with respect to the rear surface 5b of the base frame 5 so as to face outward of the rear surface 5b of the base frame 5 as it faces rearward. That is, in the other display device 200, the pair of tolerance absorbing coupling members 10 are attached in a state in which the 1 st coupling portions 11 are inclined in the opposite directions in the left-right direction as they go to the rear.

The 1 st coupling part 11 of each of the pair of tolerance absorbing coupling members 10 is configured such that the screw 22 is inserted from the back side and inserted therethrough in a state where the front surface 11a of the 1 st coupling part 11 is in contact with the back surface 4d of the 2 nd mounting bracket 4b of the liquid crystal panel mounting bracket 4, and is screwed to the 2 nd mounting bracket 4b from the back side by the screw 22.

In the base frame 5, a screw hole 5c is provided at a position corresponding to the 2 nd through hole 14 of the 2 nd coupling part 12 of the tolerance absorbing coupling member 10. The 2 nd coupling part 12 of each of the pair of tolerance absorbing coupling members 10 is configured such that the screw 22 is inserted from the back side in a state where the front surface 12a of the 2 nd coupling part 12 is in contact with the region of the back surface 5b of the base frame 5 that is inside the 2 nd fitting part 4b, and is screwed to the base frame 5 from the back side by the screw 22.

Further, the base frame 5 is provided with a through hole 5a at a position corresponding to the screw hole 1d of the front panel 1. The base frame 5 is configured such that a screw 23 is inserted from the back side in a state where the front surface 5d of the base frame 5 is in contact with the end surface 1f on the back side of the front panel 1, and is screwed to the boss portion 1b of the front panel 1 from the back side by the screw 23. Therefore, in the other display device 200, the 2 nd connecting portion 12 of each of the pair of tolerance absorbing connecting members 10 is not fixed to the front panel 1.

In the other display device 200, the tolerance absorbing coupling member 10 can be positioned at an appropriate position with respect to the base frame 5 and the liquid crystal panel mounting bracket 4 by performing the screw fastening with the screw 22 only 1 time without performing the temporary fixing and by performing the positioning with respect to the base frame 5 and the liquid crystal panel mounting bracket 4. Thus, in the other display device 200, the base frame 5 and the liquid crystal panel attachment fitting 4 can be easily coupled with each other in a short operation time.

The 1 st connecting portion 11 may be attached to the 2 nd fitting component portion 4b inclined with respect to the rear surface 5b of the base frame 5 so as to face the same direction as the left-right direction as it faces rearward in the pair of tolerance absorbing coupling members 10.

Fig. 35 is a schematic cross-sectional view showing a schematic structure of another display device 300 according to embodiment 1 of the present invention, and corresponds to fig. 1. The other display device 300 according to embodiment 1 is a modification of the display device 100 according to embodiment 1. In fig. 35, the same reference numerals are given to components corresponding to those in fig. 1 and 34.

In the other display device 300, the pair of tolerance absorbing coupling members 10 arranged in the left-right direction are attached with the 1 st coupling portion 11 to the 2 nd mounting bracket portion 4b inclined with respect to the rear surface 5b of the base frame 5 so as to face the same direction in the left-right direction as it faces rearward. That is, in the other display device 300, the pair of tolerance absorbing coupling members 10 are attached in a state in which the 1 st coupling portions 11 are inclined in the same direction in the left-right direction as they face rearward.

The right tolerance absorbing coupling member 10 of the pair of tolerance absorbing coupling members 10 is screwed to the liquid crystal panel mounting metal fitting 4, the base frame 5, and the front panel 1 in the same structure as the display device 100. The left tolerance absorbing coupling member 10 of the pair of tolerance absorbing coupling members 10 is screwed to the liquid crystal panel mounting metal fitting 4 and the base frame 5 in the same structure as the left tolerance absorbing coupling member 10 of the other display device 200.

That is, the 2 nd connecting portion 12 of the right tolerance absorbing coupling member 10 of the pair of tolerance absorbing coupling members 10 is disposed in the region outside the 1 st connecting portion 11 on the back surface 5b of the base frame 5. On the other hand, the 2 nd connecting portion 12 of the left tolerance absorbing coupling member 10 of the pair of tolerance absorbing coupling members 10 is disposed in a region inside the 1 st connecting portion 11 on the back surface 5b of the base frame 5.

In the other display device 300, the tolerance absorbing and coupling member 10 on the right side can be positioned at an appropriate position with respect to the front panel 1, the base frame 5, and the liquid crystal panel mounting bracket 4 by performing the screw fastening with the screw 22 only 1 time without performing the temporary fixing and by performing the positioning with respect to the front panel 1, the base frame 5, and the liquid crystal panel mounting bracket 4. Thus, in the other display device 300, the front panel 1 and the liquid crystal panel attachment fitting 4 can be easily coupled with each other in a short operation time.

In the other display device 300, the tolerance absorbing coupling member 10 can be positioned at an appropriate position with respect to the base frame 5 and the liquid crystal panel attachment fitting 4 by only performing the positioning with respect to the base frame 5 and the liquid crystal panel attachment fitting 41 time and performing the screw fastening with the screw 22 without performing the temporary fixing. Thus, in the other display device 300, the base frame 5 and the liquid crystal panel attachment metal fitting 4 can be easily coupled with each other in a short operation time.

Fig. 35 shows a case where the 1 st coupling portion 11 of the pair of tolerance absorbing coupling members 10 is fixed to the pair of 2 nd mounting hardware portions 4b inclined with respect to the rear surface 5b of the base frame 5 so as to face leftward as it faces rearward. The pair of tolerance absorbing coupling members 10 may be fixed to the pair of second mounting bracket parts 4b inclined with respect to the rear surface 5b of the base frame 5 in a rightward direction as it goes rearward.

As described above, the tolerance absorbing coupling member 10 according to embodiment 1 can easily couple and fix at least one of the front panel 1 and the base frame 5 and the liquid crystal panel attachment metal fitting 4 in a short operation time. That is, fig. 1 shows a case where the front panel 1, the base frame 5, and the liquid crystal panel attachment metal fitting 4 are coupled and fixed among a case where at least one of the front panel 1 and the base frame 5 and the liquid crystal panel attachment metal fitting 4 are coupled and fixed using the tolerance absorbing coupling member 10. Fig. 34 shows a case where at least one of the front panel 1 and the base frame 5 is fixed by being coupled to the liquid crystal panel mounting bracket 4 using the tolerance absorbing coupling member 10, and the base frame 5 is fixed by being coupled to the liquid crystal panel mounting bracket 4. Fig. 35 shows a case where at least one of the front panel 1 and the base frame 5 and the liquid crystal panel mounting bracket 4 are coupled and fixed by the tolerance absorbing coupling member 10, a case where the front panel 1, the base frame 5 and the liquid crystal panel mounting bracket 4 are coupled and fixed, and a case where the base frame 5 and the liquid crystal panel mounting bracket 4 are coupled and fixed.

In the display device 100, the 2 nd attachment fitting portion 4b of the liquid crystal panel attachment fitting 4 is inclined so as to face the inside of the rear surface 5b of the base frame 5 as it faces rearward. Then, the 1 st coupling part 11 of the tolerance absorbing coupling member 10 is inserted with the screw 22 from the back side in a state where the front surface 11a of the 1 st coupling part 11 is in contact with the back surface 4d of the 2 nd mounting fitting part 4b of the liquid crystal panel mounting fitting 4, and is screwed with the front panel 1 from the back side by the screw 22.

Thus, the back surface 11b of the 1 st connecting part 11 of the tolerance absorbing connecting member 10 is directed outward and rearward, that is, outward and rearward, of the back surface 5b of the base frame 5. When the work of fixing the tolerance absorbing coupling member 10 is performed during the assembly of the display device 100, the back surface 11b of the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 faces upward and outward when the back surface side of the assembly during the assembly is disposed on the upper side as shown in fig. 4. The screw 22 for fixing the 1 st coupling part 11 of the tolerance absorbing coupling member 10 and the 2 nd fitting part 4b of the liquid crystal panel fitting 4 is screwed by the electric driver 30 from the outside upward direction.

In this case, when the operator performs the screw fastening operation of the pair of tolerance absorbing coupling members 10 disposed in the left-right direction in an opposing manner by the electric driver 30, the operator can perform the operation independently and simultaneously with respect to the left and right tolerance absorbing coupling members 10. This is achieved by the tolerance absorbing coupling member 10 having the back surface 11b of the 1 st coupling part 11 directed outward and rearward. Therefore, for example, when the task time of the screw fastening operation of the tolerance absorbing coupling member 10 with respect to 1 display device 100 is prioritized, the screw fastening operation of the left tolerance absorbing coupling member 10 and the screw fastening operation of the right tolerance absorbing coupling member 10 can be performed individually and simultaneously by different operators, and an effect of shortening the time of the screw fastening operation of the tolerance absorbing coupling member 10 can be obtained. In the automatic screw tightening apparatus, the same effect is obtained by disposing 1 electric screwdriver 30 for each of the left and right tolerance absorbing coupling members 10.

In addition, when the screw fastening work of the pair of tolerance absorbing coupling members 10 provided in a state of facing in the left-right direction is performed by the electric driver 30 by 1 worker, the assembly in the middle of the assembly in which the screw fastening work of one tolerance absorbing coupling member 10 of the pair of tolerance absorbing coupling members 10 is performed is rotated 180 ° around the rotation axis in the vertical direction while passing through the center of the assembly in the horizontal direction. Thus, the operator can perform the screw fastening operation of the other tolerance absorbing coupling member 10 in the same manner as the screw fastening operation of the one tolerance absorbing coupling member 10.

Thus, when the screw fastening work of the pair of tolerance absorbing coupling members 10 is performed by 1 worker, the work of inverting the direction of the grip portion of the electric screwdriver 30 is not required, and the work of replacing the electric screwdriver 30 with another screwdriver can be avoided. Therefore, the screw fastening operation of the pair of tolerance absorbing/coupling members 10 is facilitated, the number of operation steps for the assembling operation of the display device 100 can be reduced, and the display device 100 can be assembled easily and in a short time.

In this case, the assembly body during assembly is placed on the center position of the assembly table that is rotatable about the rotation axis in the vertical direction, so that the posture of the assembly body during assembly can be easily rotated.

In the other display device 200, the pair of tolerance absorbing coupling members 10 provided in the left-right direction in a facing state are attached in a state in which the 1 st coupling parts 11 are inclined in the opposite direction in the left-right direction as they face rearward.

The back surfaces 11b of the 1 st coupling parts 11 of the pair of tolerance absorbing coupling members 10 face in different directions. That is, the back surface 11b of the 1 st coupling part 11 of the right tolerance absorbing coupling member 10 of the pair of tolerance absorbing coupling members 10 faces the left and rear directions, that is, faces the left and rear directions. In this case, the screw 22 for fixing the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 and the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 is screwed by the electric driver 30 from the left-side rear direction.

On the other hand, the rear surface 11b of the 1 st coupling part 11 of the left one of the pair of tolerance absorbing coupling members 10 faces in the right and rear directions, i.e., in the right-side rear direction. In this case, the screw 22 for fixing the 1 st coupling part 11 of the tolerance absorbing coupling member 10 and the 2 nd mounting bracket part 4b of the liquid crystal panel mounting bracket 4 is screwed by the electric driver 30 from the right-side rearward direction.

When the operation of fixing the tolerance absorbing coupling member 10 is performed at the time of assembling the other display device 200, if the back side of the assembly during the assembling is disposed to be the upper side, the screw 22 for fixing the 1 st coupling portion 11 of the right tolerance absorbing coupling member 10 and the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 is screwed by the electric driver 30 from the upper left direction. Further, the screw 22 for fixing the 1 st connecting portion 11 of the left tolerance absorbing coupling member 10 and the 2 nd mounting bracket portion 4b of the liquid crystal panel mounting bracket 4 is screwed by the electric driver 30 from the upper right direction.

In this case, the width in the left-right direction of the other display device 200 is also based, but the operator can smoothly perform the screwing operation of the screw 22 for fixing the right tolerance absorption coupling member 10 and the screwing operation of the screw 22 for fixing the left tolerance absorption coupling member 10 continuously by changing the direction of the electric screwdriver 30 by rotating the wrist, and the operation becomes easy. Thus, it is not necessary to perform an operation of changing the posture of the assembly during assembly or an operation of changing the standing position of the operator with respect to the assembly in order to perform the screw fastening operation of the screw 22 for fixing one tolerance absorption coupling member 10 of the pair of tolerance absorption coupling members 10 and then to perform the screw fastening operation of the screw 22 for fixing the other tolerance absorption coupling member 10.

In the other display device 300, the pair of tolerance absorbing coupling members 10 provided in the left-right direction in the same direction are attached in a state in which the 1 st coupling parts 11 are inclined in the left-right direction in the same direction as going to the rear.

The back surfaces 11b of the 1 st coupling parts 11 of the pair of tolerance absorbing coupling members 10 are both oriented in the same direction, i.e., in the right-side direction and in the rear direction, i.e., in the right-side rear direction. When the work of fixing the tolerance absorbing coupling members 10 is performed during the assembly of the other display device 300, the back surface side of the assembly during the assembly is disposed to be the upper side, and when the operator stands on the upper side of the other display device 300, the back surfaces 11b of the 1 st coupling portions 11 of the pair of tolerance absorbing coupling members 10 are both oriented to the upper right side. Then, the screw 22 for fixing the 1 st coupling portion 11 of the tolerance absorbing coupling member 10 and the 2 nd fitting portion 4b of the liquid crystal panel fitting 4 is screwed by the electric driver 30 from the upper right direction.

In this case, the operator can perform the screw fastening operation of the 1 st connecting portion 11 of each of the pair of tolerance absorbing connecting members 10 arranged in the left-right direction from the same direction, and the operation becomes easy.

In addition, in the case where 1 electric driver 30 is disposed with respect to each of the left and right tolerance absorbing coupling members 10 in the automatic screw fastening device, since the 2 arms on which the electric drivers 30 are mounted are in a parallel state, the screw fastening operation of the 1 st coupling portion 11 of the left and right tolerance absorbing coupling members 10 can be simultaneously performed without interference between the arms on which the electric drivers 30 are mounted.

As described above, according to the display device 100 according to embodiment 1, a display device that can be easily assembled in a short time can be obtained.

The configurations described in the above embodiments are merely examples of the contents of the present invention, and the techniques of the embodiments may be combined with each other, with other known techniques, or with some of the configurations may be omitted or modified without departing from the scope of the present invention.

Description of the reference numerals

1 front panel, 1a frame-shaped portion, 1b convex portion, 1c, 3a, 5d, 11a, 12a front surface, 1d screw hole, 1e opening, 1f end surface, 2 touch panel, 2a, 4d, 5b, 11b, 12b back surface, 3 liquid crystal panel, 3b end surface, 4 liquid crystal panel mounting metal piece, 4a 1 st mounting metal piece portion, 4b 2 nd mounting metal piece portion, 4c, 5c screw hole, 5 base frame, 5a through hole, 10 tolerance absorbing connecting member, 11 st connecting portion, 12 nd connecting portion, 13 st through hole, 14 nd through hole, 21a 1 st adhesive layer, 21b 2 nd adhesive layer, 22, 23 screw, 30 electric screwdriver, 40, 50 universal joint, 41 st 1 st portion, 42, 44 joint portion, 43 nd 2 portion, 45 rd 3 portion, 100 display device, 200, 300 other display device, theta bend angle.

Claims (18)

1. A display device is characterized by comprising:

a frame-shaped front panel;

a touch panel having a flat plate shape, and an outer peripheral edge portion of a back surface of the touch panel being fixed to a front surface of the front panel by a 1 st adhesive layer so as to close an opening of the front panel;

a liquid crystal panel having a flat plate shape, a front surface of which is fixed to a back surface of the touch panel by a 2 nd adhesive layer in a state of being parallel to the front panel;

a base frame that is flat and disposed behind the liquid crystal panel in a state of being parallel to the touch panel, when a direction perpendicular to the front surface of the front panel and extending from the touch panel toward the liquid crystal panel is defined as a rear direction;

a liquid crystal panel mounting metal fitting which is fixed to the liquid crystal panel in a state of projecting rearward from the liquid crystal panel, and which has an inclined portion inclined with respect to a rear surface of the base frame toward the rear, at a rear side of the base frame; and

a tolerance absorbing and connecting member for connecting and fixing at least one of the front panel and the base frame and the liquid crystal panel mounting metal fitting,

the tolerance-absorbing coupling member has:

a 1 st coupling part which is screwed to the inclined part from the rear side in a state of having an inclination along the inclined part and being in contact with a rear surface of the inclined part; and

a 2 nd connecting part which is bent and extended from the 1 st connecting part, and is screwed to the base frame from the rear side in a state of being in contact with the rear surface of the base frame, or is bent and extended from the 1 st connecting part, and is screwed to the front panel from the rear side in a state of being in contact with the rear surface of the base frame and sandwiching the base frame between the front panel and the front panel,

the 1 st coupling part has a 1 st through hole for screw-fastening with the inclined part,

the 2 nd connecting portion has a 2 nd through hole for fastening with the base frame screw or the front panel screw.

2. The display device according to claim 1,

the 1 st through hole has a diameter larger than a diameter of a screw portion of a 1 st screw for screw-fastening the 1 st coupling portion and the inclined portion and smaller than a diameter of a head portion of the 1 st screw,

the 2 nd through hole has a diameter larger than a diameter of a screw portion of a 2 nd screw for fastening the 2 nd coupling portion to the base frame or the front panel screw and smaller than a diameter of a head portion of the 2 nd screw.

3. The display device according to claim 1 or 2,

the 1 st through hole and the 2 nd through hole are elongated holes extending in a direction in which the 1 st coupling part and the 2 nd coupling part are aligned.

4. The display device according to claim 1 or 2,

the bending angle of the 1 st connecting part and the 2 nd connecting part is 120-170 degrees.

5. The display device according to claim 3,

the bending angle of the 1 st connecting part and the 2 nd connecting part is 120-170 degrees.

6. The display device according to claim 1 or 2,

the tolerance-absorbing coupling member is constructed of metal.

7. The display device according to claim 3,

the tolerance-absorbing coupling component is composed of metal.

8. The display device according to claim 4,

the tolerance-absorbing coupling component is composed of metal.

9. The display device according to claim 5,

the tolerance-absorbing coupling member is constructed of metal.

10. A tolerance absorbing connecting member for connecting and fixing at least one of a front panel and a base frame to a liquid crystal panel mounting metal fitting in a display device,

the display device has:

the front panel is frame-shaped;

a touch panel having a flat plate shape, and an outer peripheral edge portion of a back surface of the touch panel being fixed to a front surface of the front panel by a 1 st adhesive layer so as to close an opening of the front panel;

a liquid crystal panel having a flat plate shape, a front surface of which is fixed to a rear surface of the touch panel by a 2 nd adhesive layer in a state of being parallel to the front panel;

a base frame which is flat and is disposed behind the liquid crystal panel in a state of being parallel to the touch panel, when a direction perpendicular to a front surface of the front panel and extending from the touch panel toward the liquid crystal panel is defined as a rear direction; and

a liquid crystal panel mounting metal fitting fixed to the liquid crystal panel in a state of protruding rearward from the liquid crystal panel, and having an inclined portion inclined with respect to a rear surface of the base frame toward the rear, at a rear side of the base frame,

the tolerance-absorbing coupling member is characterized by comprising:

a 1 st coupling part screwed to the inclined part from the rear side in a state of having an inclination along the inclined part and contacting a rear surface of the inclined part; and

a 2 nd connecting part which is bent and extended from the 1 st connecting part, and is screwed to the base frame from the rear side in a state of being in contact with the rear surface of the base frame, or is bent and extended from the 1 st connecting part, and is screwed to the front panel from the rear side in a state of being in contact with the rear surface of the base frame and sandwiching the base frame between the front panel and the front panel,

the 1 st coupling part has a 1 st through hole for screw-fastening with the inclined part,

the 2 nd connecting portion has a 2 nd through hole for fastening with the base frame screw or the front panel screw.

11. The tolerance absorbing coupling component of claim 10,

the 1 st through hole has a diameter larger than a diameter of a screw portion of a 1 st screw for screw-fastening the 1 st coupling portion and the inclined portion and smaller than a diameter of a head portion of the 1 st screw,

the 2 nd through hole has a diameter larger than a diameter of a screw portion of a 2 nd screw for fastening the 2 nd coupling portion to the base frame or the front panel screw and smaller than a diameter of a head portion of the 2 nd screw.

12. Tolerance-absorbing coupling part according to claim 10 or 11,

the 1 st through hole and the 2 nd through hole are elongated holes extending in a direction in which the 1 st coupling part and the 2 nd coupling part are aligned.

13. The tolerance-absorbing coupling component of claim 10 or 11,

the bending angle of the 1 st connecting part and the 2 nd connecting part is 120-170 degrees.

14. The tolerance absorbing attachment member of claim 12,

the bending angle of the 1 st connecting part and the 2 nd connecting part is 120-170 degrees.

15. Tolerance-absorbing coupling part according to claim 10 or 11,

the tolerance-absorbing coupling member is constructed of metal.

16. The tolerance absorbing coupling component of claim 12,

the tolerance-absorbing coupling component is composed of metal.

17. The tolerance absorbing attachment member of claim 13,

the tolerance-absorbing coupling member is constructed of metal.

18. The tolerance absorbing coupling component of claim 14,

the tolerance-absorbing coupling component is composed of metal.

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