JP2019194734A - Display device - Google Patents

Abstract

To provide a method of manufacturing a display device which prevents movement of a display panel due to vibration and shock to prevent the display panel from being damaged or moved from a desired position on a display device.SOLUTION: A method disclosed herein comprises: aligning an elastic member 5 located on a non-display surface 12 of a display panel 1 with a groove 32 formed on a holding frame 3 constituting a surface light source device 2; moving the elastic member 5 in a direction toward the holding frame 3 (direction shown by an arrow); and fitting the elastic member into the groove 32 to fix the display panel 1 to the holding frame 3.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a display device having a display panel.

In a general display device, when holding the display panel with a holding member, the display panel end face and the display panel of the holding member are taken into consideration in consideration of cutting tolerance of the display panel, molding tolerance of the holding member, deformation due to temperature and impact, etc. Clearance is provided between the side wall. However, if there is a clearance, the display panel moves on the holding member, which causes problems such as the display panel being displaced from the desired arrangement position of the display device. As means for solving this problem, a method of fixing a corner of a display panel to a holding member by holding the corner with a fixing member has been disclosed (for example, see Patent Document 1).

JP-A-9-311319

  In the display device disclosed in Patent Document 1, since the corner portion of the display panel placed on the holding member is held by the fixing member, the display panel may be damaged when vibration or impact is applied to the display device. There is. Further, since the display panel is fixed to the holding member by pressing the fixing member with a screw, the screw may be loosened due to vibration or impact, and the display panel and the holding member may be displaced.

  The present invention has been made to solve the above-described problems, and prevents the display panel from moving due to vibration or shock, so that the display panel is damaged or the display panel is displaced from a desired arrangement position of the display device. Provided is a method for manufacturing a display device that prevents the above-described problem.

  The display device manufacturing method of the present invention is a peripheral region surrounding a display region of a display panel that displays an image, is formed along one side of the display panel, and is formed on the opposite display surface of the display panel opposite to the display surface. A step of adhering the elastic member, a step of positioning the elastic member with the concave groove or hole formed at a position corresponding to the arrangement position of the elastic member of the holding frame on which the display panel is placed, and the holding frame The concave groove or hole formed includes a side surface on which the elastic member is arranged to face, and includes a step of contacting and fitting the elastic member to the side surface.

  According to the method for manufacturing a display device of the present invention, it is possible to suppress the movement of the display panel by absorbing vibration and impact with the elastic member. Thereby, it is possible to prevent the display panel from being damaged and the display panel from being displaced from a desired arrangement position of the display device.

It is a disassembled perspective view of the display apparatus concerning this invention. It is AA sectional drawing concerning the state which assembled the display apparatus of FIG. 1 is a plan view of a display device according to a first embodiment. 1 is a cross-sectional view of a main part of a display device according to a first embodiment. 1 is a plan view of a display device according to a first embodiment. 1 is a plan view of a display device according to a first embodiment. FIG. 6 is a main part sectional view of a display device according to a second exemplary embodiment; FIG. 6 is a cross-sectional view of a main part of a display device according to a third embodiment.

Embodiment 1 FIG.
Hereinafter, the present invention will be described with reference to the drawings. 1 is an exploded perspective view of a display device according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA in a state where the display device of FIG. 1 is assembled, and FIG. 3 is a plan view for explaining the display device in the present embodiment. FIG. 4 is a cross-sectional view of an essential part for explaining the display device in the present embodiment.

<Overall configuration of display device>
As shown in FIG. 1 or FIG. 2, the display device 100 of the present invention includes a generally rectangular display panel 1 and a planar light source device 2 for irradiating the display panel 1. The planar light source device 2 houses optical members such as a light source 22, a reflection sheet 23, a light guide plate 24, and optical sheets 25 in a lower frame 21 having a side surface and a bottom surface, and a holding frame 3 provided with an opening. These optical members are held from the exit surface side of the planar light source device 2. Further, the display panel 1 is disposed on the exit surface side of the planar light source device 2 and above the holding frame 3, and the lower frame 21 and the upper frame 4 are engaged to constitute the display device 100. .

<Display panel>
The display panel 1 is a transmissive panel, and a plasma display panel, a liquid crystal display panel, or the like can be used. The liquid crystal display panel applies the birefringence of liquid crystal, and is a first substrate (hereinafter referred to as a color filter substrate) in which a colored layer, a light shielding layer, a counter electrode, etc. are formed on an insulating substrate such as glass. And a second substrate on which a thin film transistor (hereinafter referred to as TFT) serving as a switching element, a pixel electrode, and the like are formed over an insulating substrate such as glass. In addition, a spacer for maintaining a distance between the first substrate and the second substrate, a sealing material for bonding the counter substrate and the TFT array substrate, and a liquid crystal sandwiched between the counter substrate and the TFT array substrate , A sealing material for an injection port for injecting liquid crystal, an alignment film for distributing light of the liquid crystal, a polarizing plate, and the like (not shown).

<Holding frame>
The holding frame 3 is a member that holds the display panel 1 and the planar light source device 2 and is made of a thin metal plate or a resin molded product. In the case of a thin metal plate, machining cuts are provided as necessary (not shown). The holding frame 3 may be integrally formed, or may be configured by combining a plurality of members.

<Surface light source device>
The planar light source device 2 is disposed on the light emitting plate 22, the lower frame 21 that holds the light guide plate 24 that propagates the light emitted from the light source 22, and the light exiting surface of the light guide plate 24. A reflection sheet 23 for returning the light emitted to the opposite emission surface to the light guide plate 24 is disposed. Light from the exit surface of the light guide plate 24 is adjusted by the optical sheets 25 and becomes light that irradiates the display panel 1.

  Next, the configuration of the display device of the present invention will be described. As shown in FIG. 2 and FIG. 3, the display device 100 according to the present invention is a peripheral region BR of the display panel 1, and extends along the one side of the display panel 1 to the opposite display surface 12 opposite to the display surface 11. The elastic member 5 arranged in a shape is provided. Here, the peripheral area BR of the display panel 1 is a peripheral area outside the display area AR of the display panel 1 and does not contribute to display, and is an upper portion excluding the opening of the holding frame 3 (mounting of the display panel 1). The part facing the surface 31) is shown. Further, a groove 32 having a shape corresponding to the elastic member 5 is formed at a position corresponding to the arrangement position of the elastic member 5.

  The elastic member 5 formed on the non-display surface 12 of the display panel 1 is made of a material containing a resin such as a synthetic resin. The elastic member 5 provided in the display panel 1 and the groove 32 formed in the holding frame 3 are such that the center O of the display panel 1 coincides with a desired point of the display device 100 including the display panel 1. It is designed to be disposed on the display panel mounting surface 31 of the holding frame 3. That is, the elastic member 5 and the groove 32 are designed so that the display panel 1 is arranged at a desired arrangement position of the display device 100. In order to accurately dispose the elastic member 5 on the display panel 1, even if the elastic member 5 is automatically supplied to a desired position by using a device such as a seal dispenser, the elastic member 5 is disposed. Good.

  In addition, the elastic member 5 may be formed by a method in which a resin or the like is poured into the corresponding groove 32 and then adhered to the display panel 1. By such a manufacturing method, it can be formed relatively easily and at an accurate position as compared with the method of forming on the display panel 1 side.

  The groove 32 of the holding frame 3 provided corresponding to the elastic member 5 provided along one side of the display panel 1 is perpendicular to the non-display surface 12 of the display panel 1 as shown in the sectional view of FIG. A pair of side surfaces 321 and a bottom surface 322 are provided so as to have a concave shape recessed in the direction. The size of the groove 32 is such that the elastic member 5 provided in the display panel 1 can be accommodated and the side surface 51 of the elastic member 5 is in contact with the side surface 321 of the groove 32.

  Next, a method for fixing the display panel 1 of the display device 100 according to the present invention to the holding frame 3 will be described. As shown in FIG. 4, the position of the elastic member 5 disposed on the non-display surface 12 of the display panel 1 is made to coincide with the groove 32 formed in the holding frame 3 constituting the planar light source device 2, and the elastic member 5 is moved in the direction of the holding frame 3 (the direction indicated by the arrow), and is fitted into the groove 32 to fix the display panel 1 to the holding frame 3.

  Next, the operation of the configuration of the present invention will be described. In the display device 100 of the present invention, the holding frame 3 and the display panel 1 are fixed via the elastic member 5. The groove 32 formed in the holding frame 3 that accommodates the elastic member 5 includes a pair of side surfaces 321, and the side surface 321 is disposed in contact with the side surface 51 of the elastic member 5, so that the elastic member formed of resin or the like. The elastic member 5 can absorb the vibration / impact applied to the display panel 1 by the elastic force 5.

  Therefore, as described above, in the display device 100, the elastic member 5 having elastic force is provided on the non-display surface 12 of the display panel 1 and is fitted in the groove 32 of the holding frame 3 constituting the planar light source device 2. Since the display panel 1 is fixed, it is possible to prevent the display panel 1 from moving by absorbing external vibration and impact. Therefore, it is possible to prevent the display panel 1 from shifting from a desired arrangement position of the display device 100.

  Further, in addition to preventing the display panel 1 from moving due to external vibration and impact, it is possible to prevent the impact and vibration applied to the display panel 1, thereby preventing the display panel 1 from being damaged.

  Further, since the elastic member 5 formed on the display panel 1 is fixed in the groove 32, the display panel 1 can be easily positioned without using a fixing member such as a screw, and the assemblability is improved. Can be made.

  Further, at the time of disassembly, it is only necessary to remove the elastic member 5 of the display panel 1 from the groove 32 of the holding frame 3, and reworkability can be improved as compared with a method of fixing using an adhesive material of a double-sided tape. .

  Further, since the fixing member is the elastic member 5 and the adhesion between the display panel 1 and the holding frame 3 is enhanced, the generation of foreign matter due to the end surface of the display panel 1 coming into contact with other members, Intrusion can be prevented.

  In addition, although the elastic member 5 and the groove | channel 32 are provided along at least one side of the display panel 1 by planar view, the vibration added to the display panel 1 can be absorbed and there can exist said effect. It can be stably fixed by being provided along a pair of opposite sides (a pair of opposite sides) or two adjacent sides orthogonal to each other. Furthermore, as shown in FIG. 3, the display panel 1 and the holding frame 3 can be more stably fixed by being provided on two opposite sides (two opposite sides). Impacts and vibrations applied to the panel 1 can be prevented.

  As shown in FIG. 4, the groove 32 has been described by exemplifying the side surface 321 formed by a straight line that is substantially perpendicular to the non-display surface 12 of the display panel 1. If the groove 32 is disposed along the side, the side surface 321 may not be a vertical plane. For example, it may be a side surface having a curve in plan view. Thereby, positioning can be performed more accurately.

  Moreover, you may provide the side surface used as the inclined surface which has the inclination from which the groove | channel 32 becomes small toward the inside of the holding frame 3 from the display panel mounting surface 31 of the holding frame 3. Since the side surface is formed as an inclined surface, the elastic member 5 can be easily inserted into the groove 32, so that workability can be improved.

  The elastic member 5 is configured to be bonded to the display panel 1 and is not bonded to the groove 32. However, the display panel 1 and the groove 32 of the holding frame 3 can be more reliably fixed. If it is the purpose, the elastic member 5 may be bonded to the groove 32. In that case, the bottom surface 322 of the groove and the elastic member 5 shown in FIG.

  FIG. 5 shows a modification of the first embodiment. As shown in the plan view of FIG. 5, the elastic member 5 and the groove 32 may be configured to have, for example, an L shape along the side of the corner (corner) of the display panel 1. By providing the elastic member 5 and the groove 32 in the corner portion, the movement of the corner portion of the display panel 1 can be prevented, and in particular, cracking (breaking) of the corner portion of the display panel 1 can be prevented.

  FIG. 6 shows a modification of the first embodiment. As shown in the plan view of FIG. 6, the elastic member 5 and the groove 32 may be configured to have a mouth shape that does not include an opening along the rectangular side of the display panel 1. By providing the mouth-shaped elastic member 5 and the groove 32, the display panel 1 can be more stably fixed and the entry of foreign matter from the outside can be more reliably prevented. That is, as the area where the elastic member 5 and the groove 32 are formed increases, the display panel 1 and the holding frame 3 can be more stably fixed, and the entry of foreign matter from the outside can be more reliably prevented.

Embodiment 2. FIG.
FIG. 7 is a cross-sectional view of relevant parts for explaining the configuration of the display device 100 according to Embodiment 2 of the present invention. The second embodiment of the present invention will be described below with reference to FIG. In the first embodiment, the groove 32 of the holding frame 3 provided corresponding to the elastic member 5 provided along one side of the display panel 1 is recessed in a direction perpendicular to the non-display surface 12 of the display panel 1. The pair of side surfaces 321 and the bottom surface 322 are provided so as to have a concave shape. However, in the second embodiment, the bottom surface is not provided at a position corresponding to the elastic member 5 of the holding frame 3 as shown in FIG. Hole 33 is provided. In addition, since it is the same as that of Embodiment 1 except the structure and effect demonstrated in this Embodiment 2, description is abbreviate | omitted.

  As shown in FIG. 7, since the hole 33 having no bottom surface is formed in the holding frame 3, the degree of freedom in designing the elastic member 5 accommodated therein is increased by opening the bottom. Further, since the elastic member 5 can be formed with a height corresponding to the depth of the hole 33, the contact area between the side surface 51 of the elastic member 5 and the side surface 331 of the hole increases, so that both Can be fixed.

Embodiment 3.
FIG. 8 is a cross-sectional view of relevant parts for explaining the configuration of the display device 100 according to Embodiment 3 of the present invention. The second embodiment of the present invention will be described below with reference to FIG. In the first embodiment, the groove 32 of the holding frame 3 provided corresponding to the elastic member 5 provided along one side of the display panel 1 is recessed in a direction perpendicular to the non-display surface 12 of the display panel 1. The pair of side surfaces 321 and the bottom surface 322 are provided so as to have a concave shape. However, in the third embodiment, as shown in FIG. 8, the groove 32 provided in the holding frame 3 has a step which does not include one side surface. The recess 34 may be used. Except for the configuration and operational effects described in the third embodiment, the configuration is the same as that of the first embodiment, and thus the description thereof is omitted.

  As shown in FIG. 8, the recess 34 provided in the holding frame 3 is a recess 34 that does not have an inner side surface that is one side surface. Note that in the case where the concave portion 34 whose inner side surface is opened is disposed, the concave portion 34 is formed on at least one pair of opposing sides of the display panel 1 and has a pair of side surfaces. As in the third embodiment, the stepped concave portion 34 that does not have the side surface on the inner side is open, so that one side portion is open, so the degree of freedom in designing the concave portion 34 or the elastic member 5 is increased. . Further, compared with the case where the groove 32 described in the first embodiment and the hole 33 described in the second embodiment are processed, burrs or the like are hardly generated in the holding frame 3, and thus the yield is improved.

  The configuration of the display device of the present invention described above can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  In each of the above embodiments, the case of a display device using a liquid crystal display panel as the display panel has been described. However, the present invention can be applied to other display panels.

1 display panel, 11 display surface, 12 counter display surface,
2 planar light source device, 21 lower frame, 22 light source, 23 reflection sheet, 24 light guide plate, 25 optical sheets,
3 holding frame, 31 display panel mounting surface, 32 groove, 321 side surface, 322 bottom surface, 33 hole, 331 side surface of hole, 34 recess, side surface of 341 recess,
4 upper frame, 5 elastic member, 51 side surface, 100 display device.

Claims (5)

A peripheral area surrounding a display area of a display panel for displaying an image, formed along one side of the display panel, and attaching an elastic member to an opposite display surface opposite to the display surface of the display panel;
Positioning the elastic member with a concave groove or hole formed at a position corresponding to the position of the elastic member of the holding frame on which the display panel is placed;
The concave groove or hole formed in the holding frame includes a side surface on which the elastic member is disposed to be opposed, and the elastic member is brought into contact with and fitted to the side surface;
A method for manufacturing a display device, comprising: 2. The elastic member and a concave groove or hole of the holding frame provided corresponding to the elastic member are respectively formed along at least one pair of opposite sides of the display panel. The manufacturing method of the display apparatus of description. 2. The concave groove or hole of the holding frame provided corresponding to the elastic member and the elastic member is formed along two adjacent sides of the display panel, respectively. Method of manufacturing the display device. The concave groove or hole formed in the holding frame is such that the side surface on which the elastic member faces is inclined toward the inside of the holding frame from the surface of the holding frame on which the display panel is mounted. The manufacturing method of the display apparatus of any one of Claims 1-3 characterized by the above-mentioned. The concave groove or hole formed in the holding frame has a side surface on which the elastic member is arranged to face the curved groove in part in a plan view. The manufacturing method of the display apparatus of any one.

Images