WO2012035859A1 - Display device and liquid crystal display device - Google Patents

Display device and liquid crystal display device Download PDF

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Publication number
WO2012035859A1
WO2012035859A1 PCT/JP2011/065798 JP2011065798W WO2012035859A1 WO 2012035859 A1 WO2012035859 A1 WO 2012035859A1 JP 2011065798 W JP2011065798 W JP 2011065798W WO 2012035859 A1 WO2012035859 A1 WO 2012035859A1
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WO
WIPO (PCT)
Prior art keywords
display panel
resin
substrate
liquid crystal
panel
Prior art date
Application number
PCT/JP2011/065798
Other languages
French (fr)
Japanese (ja)
Inventor
佐々木　伸夫
Original Assignee
シャープ株式会社
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Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2012035859A1 publication Critical patent/WO2012035859A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133311—Environmental protection, e.g. against dust or humidity
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames

Definitions

  • the present invention relates to a display device and a liquid crystal display device, and more specifically, a display device including a display panel (liquid crystal display panel) and a panel support member that supports the display panel (liquid crystal display panel) so as to surround a side surface thereof.
  • the present invention relates to a liquid crystal display device.
  • a display device that displays an image particularly a liquid crystal display device used in a mobile device such as a mobile phone
  • a display device that displays an image
  • a liquid crystal display device used in a mobile device such as a mobile phone
  • it is required to reduce the frame area formed around the display area.
  • it is conceivable to reduce the width of the non-display area at the periphery of the display panel.
  • a non-display area is an area used as a bonding allowance between two substrates, if the width of the non-display area at the periphery of the display panel is reduced, the bonding strength of the two substrates is reduced, This causes problems such as gas and moisture intrusion into the panel.
  • Patent Document 1 describes a configuration in which the side of the display panel is covered with a resin (gas barrier layer) to prevent intrusion of gas and moisture into the display panel. ing.
  • Patent Document 2 As a structure which covers the display panel side surface similar to Patent Document 1 with a resin, an adhesive is provided between the side surface of the display panel and the side wall of the panel support member (a minute gap) as described in Patent Document 2 below.
  • a configuration in which (resin) is injected is known.
  • this patent document 2 aims at the improvement of the fixing strength of the display panel with respect to a panel support member, the bonding intensity
  • a resin layer (gas barrier layer) that covers the side surface of the display panel is formed with a mold, and then the mold is removed or (in some cases) an excess resin layer is removed. Necessary. Further, since the resin layer extending in the plane direction of the panel from the side surface of the display panel is formed, the frame area of the display device is increased by the size of the resin layer.
  • the problem to be solved by the present invention is to prevent the peeling of the substrate due to the decrease in the bonding strength of the two substrates constituting the display panel, and the intrusion of gas and moisture into the display panel.
  • the purpose is to reduce the frame area around the display area.
  • a display device includes a first substrate positioned on a display surface side for displaying an image, and a second substrate bonded to the first substrate and positioned on the opposite side of the display surface.
  • a display panel having a side wall that surrounds the side surface of the display panel, and a panel support member having an opening on the display surface side of the display panel.
  • an inclined surface that is inclined from the opposite surface side facing the side surface of the display panel to the opening is formed, and the first substrate and the second substrate are formed in a space between the inclined surface and the side surface of the display panel.
  • the gist is that the resin is filled so as to cover the boundary between the two substrates.
  • the deepest position in the space filled with the resin and the central position in the thickness direction of the second substrate on the side surface of the display panel need only substantially coincide with each other.
  • the upper end edge of the inclined surface and the upper end edge of the side surface of the display panel may be substantially the same height.
  • boundary between the facing surface and the inclined surface may be formed as a curved surface.
  • the inclined surface is formed on a part of the side wall of the panel support member, and the portion where the inclined surface is formed and the portion where the inclined surface is not formed on the side wall of the panel support member, It is sufficient that a blocking portion for blocking the space filled with the resin and other spaces is provided at the boundary of
  • the resin when the backlight further irradiates light from the second substrate to the first substrate, the resin may be black.
  • the liquid crystal display device includes a liquid crystal display panel in which liquid crystal is filled between a first substrate and a second substrate.
  • the gist of the present invention is the liquid crystal display device.
  • the display device forms an inclined surface on the side wall of the panel support member that supports the display panel, and covers the boundary between the first substrate and the second substrate in a space between the inclined surface and the side surface of the display panel.
  • the resin is filled.
  • the resin filled in the space can fix the display panel to the panel support member and improve the bonding strength between the first substrate and the second substrate.
  • the inclined surface formed on the side wall can increase the inlet for injecting the resin without increasing the width of the frame region of the display panel. That is, the resin injection operation can be facilitated while maintaining the size of the frame region.
  • the thickness of the side wall can be set to be the same as the conventional thickness except for the portion where the inclined surface is formed, the strength of the side wall is not significantly reduced.
  • the portion filled with resin is local (the size of the space filled with resin is relatively small)
  • the amount of resin to be injected is small relative to the area of the side surface of the display panel covered with resin, Variations in the amount of injected resin in the circumferential direction of the display panel are also reduced. Therefore, the occurrence of problems due to variations in the amount of injected resin, such as the resin overflowing on the display panel surface and covering a part of the display area or a portion where a sufficient amount of adhesive is not injected, is prevented.
  • the boundary between the first substrate and the second substrate can be reliably covered with resin. Specifically, even if the deepest position of the space filled with resin moves to the opening side (display surface side) due to manufacturing errors of each member, the boundary between the first substrate and the second substrate is surely affected. It can be positioned so as to face the space filled with resin.
  • the side surface of the display panel (second substrate) and the opposing surface Can reliably secure the overlapping portion in the plane direction of the panel. That is, at the time of assembly, it is possible to secure a portion serving as a positioning margin of the display panel with respect to the panel support member, and it is possible to prevent the resin injected into the space from dripping below the display panel.
  • the resin is less likely to overflow.
  • the display panel is assembled inside the side wall of the panel support member.
  • the boundary between the opposing surface and the inclined surface is formed into a curved surface so that no edge exists on the inner periphery of the side wall of the panel support member, the display panel is assembled inside the side wall of the panel support member.
  • the space formed by the inclined surface is provided if a blocking portion that blocks the space filled with the resin and the other space is provided. Only the resin does not spread and invade other places.
  • the resin covering the side surface of the display panel is black, it is easy to visually check whether the resin has been injected into a predetermined place. Further, when the display device requires a backlight device that irradiates light in the direction from the second substrate to the first substrate, the resin serves as a light shielding layer, and light leakage from the side surface of the display panel is prevented. It is suppressed. That is, even in a small frame region, a display device that displays a high-quality image with little light leakage from the periphery of the display panel can be obtained.
  • FIG. 1 is an external perspective view of a liquid crystal display device according to an embodiment of the present invention. It is the top view which looked at the liquid crystal display device concerning one embodiment of the present invention from the opening side. It is the perspective view which decomposed
  • FIG. 2A is a diagram schematically showing a cross section taken along line AA in FIG. 1 (hatching is omitted).
  • (B) is the configuration in which the inclined surface is not formed on the side wall, and the width E of the inlet for injecting the resin and the width W (thickness) of the side wall are set to be the same as the configuration according to the present embodiment shown in (a)
  • the height direction in the present invention (high, low, vertical, deep) means the vertical direction in FIGS.
  • a liquid crystal display device 1 is a liquid crystal display device used for a mobile phone, and includes a liquid crystal display panel 10 that displays an image and a panel support member 20 that supports the liquid crystal display panel 10. 4 to 7, the substrates (first substrate 11 and second substrate 12) and polarizing plates (front-side polarizing plate 11a and back-side polarizing plate 12a) constituting the liquid crystal display panel 10 are shown. Although it is actually very thin, it is drawn with emphasis on thickness to make the explanation easy to understand. In these drawings, cross-sectional hatching is omitted for easy understanding of the drawings.
  • the liquid crystal display panel 10 is disposed on the first substrate 11 disposed on the display surface side for displaying an image, and on the opposite side of the display surface to face the first substrate 11. And a second substrate 12.
  • the first substrate 11 and the second substrate 12 face each other with a predetermined cell gap, and a liquid crystal (not shown) is filled between the substrates.
  • the first substrate 11 is a color filter (CF) substrate.
  • the first substrate 11 has a plurality of color filters formed on a matrix (a color filter is provided inside a black matrix 122 formed in a lattice shape) on the substrate, and transparent over almost the entire surface of the substrate.
  • a common electrode is formed. The light transmitted through the liquid crystal layer is recognized as a color image by passing through the color filter.
  • the second substrate 12 is a thin film transistor (TFT) array substrate.
  • the second substrate 12 is a substrate in which TFTs, pixel electrodes, and the like are formed in a matrix.
  • the front side polarizing plate 11a and the back side polarizing plate, respectively. 12a is pasted.
  • the second substrate 12 is formed larger than the first substrate 11. Specifically, one side of the second substrate 12 is formed to protrude outward from one side in the same direction of the first substrate 11 (this portion is referred to as an overhang portion 121).
  • the flexible substrate 14 is connected to the overhang portion 121.
  • the first substrate 11 is electrically connected to an external device (not shown) through the flexible substrate 14, and the TFT and the like are controlled by the external device.
  • the configuration of the liquid crystal display panel 10 is merely an example, and the configuration can be changed as appropriate as long as a liquid crystal layer is formed between two substrates.
  • the front side polarizing plate 11 a and the back side polarizing plate 12 a may be a liquid crystal display panel arranged inside the first substrate 11 or the second substrate 12.
  • the backlight device of the liquid crystal display device 1 includes a light source 13.
  • the light source 13 is a point light source composed of, for example, a light emitting diode (LED).
  • the light source 13 is housed inside the panel support member 20 below the liquid crystal display panel 10 and electrically connected to an external device via a power supply connection member (not shown) (for example, a flexible substrate). It is connected. The supply of power to the light source 13 is controlled by the external device.
  • the light emitted from the light source 13 enters the inside of the panel support member 20.
  • Optical members such as a reflection sheet, a light guide plate, and an optical sheet (not shown) are arranged inside the panel support member 20.
  • Such an optical member efficiently emits the light emitted from the light source 13 to the liquid crystal display panel 10 side.
  • Light enters from the back surface of the liquid crystal display panel 10 (from the second substrate 12 side).
  • the light that has passed through the liquid crystal layer passes through the first substrate 11 (color filter) and is recognized as a color image.
  • the configuration of the backlight device can be changed as appropriate, and the configuration of a known backlight device can be applied.
  • the panel support member 20 is a tray (shallow box) -like member that supports the liquid crystal display panel 10 having the above-described configuration, and is integrally formed with a synthetic resin (for example, polycarbonate resin).
  • the panel support member 20 includes a flat bottom plate 21 having a substantially rectangular shape in plan view, and side walls 22 formed so as to rise in the height direction from the respective side edges (four sides) of the bottom plate 21, and are fixed liquid crystal.
  • the display surface side (upper) of the display panel 10 has an opening (hereinafter referred to as an opening 23).
  • the side wall 22 along each side edge of the bottom plate 21 is distinguished, the configuration on the side where the flexible substrate 14 is arranged is the side wall 22d, and the configuration (side wall along the short side) is the side wall 22a, the side wall 22a, and the side wall A configuration (a side wall along the longitudinal direction) substantially orthogonal to 22d may be referred to as a side wall 22b and a side wall 22c.
  • a panel support surface 211 is formed on the bottom plate 21 on the front side.
  • the liquid crystal display panel 10 (second substrate 12) is placed so as to cover the opening 23 of the panel support member 20.
  • the panel support surface 211 is formed along each side of the bottom plate 21 (along the side wall 22). Note that an adhesive member for fixing the liquid crystal display panel 10 more firmly may be interposed between the panel support surface 211 and the liquid crystal display panel 10.
  • an opposing surface 221 that faces the side surface of the liquid crystal display panel 10 and an inclined surface 222 that is inclined from the opposing surface 221 to the opening 23 of the panel support member 20 are formed on a part of the inner periphery thereof.
  • the opposing surface 221 and the inclined surface 222 are formed on the inner surface of the side wall 22a, a part of the inner surface of the side wall 22b, and a part of the inner surface of the side wall 22c.
  • the liquid crystal display panel 10 placed on the panel support surface 211 is fixed to the panel support member 20 with its side surface in contact with the opposing surface 221.
  • the “minute gap” is a gap that prevents the resin 40 injected into the resin filling space 30 described later from dripping down the liquid crystal display panel 10 from the gap.
  • a space having a predetermined size (hereinafter referred to as a resin-filled space 30) is provided between the side surface of the liquid crystal display panel 10 fixed to the panel support member 20 and the side wall 22 of the panel support member 20. It is formed. Specifically, the inclined surface 222 formed on the side wall 22 of the panel support member 20 forms a resin-filled space 30 having a substantially triangular cross section between the inclined surface 222 and the side surface of the liquid crystal display panel 10.
  • the resin filling space 30 is filled with a resin material (hereinafter, the filled resin material is referred to as a resin 40). Details of the configuration of the resin filling space 30 (configuration of the side wall 22 of the panel support member 20) will be described later.
  • a cutout 223 larger than the width of the flexible substrate 14 is formed on the side wall 22d on the flexible substrate 14 side.
  • a flexible substrate 14, a connection member (not shown) that connects the light source 13 and an external device, and the like are drawn to the outside of the panel support member 20 through the notch 223.
  • the inclined surface 222 formed on the side wall 22 of the panel support member 20 has a predetermined triangular cross section between the inclined surface 222 and the side surface of the liquid crystal display panel 10.
  • a space having a size is formed.
  • the resin-filled space 30 is filled with a resin 40 that is excellent in adhesiveness, air-tightness (refers to a property that does not allow gas to pass), and moisture-proof properties (refers to a property that does not pass moisture (moisture)).
  • suitable resins include epoxy resins.
  • the resin 40 filled in the resin filling space 30 serves to fix the liquid crystal display panel 10 and the panel support member 20. That is, since the resin 40 to be filled has an adhesive force, the resin 40 adheres the liquid crystal display panel 10 and the panel support member 20.
  • the liquid crystal display panel 10 and the panel support member 20 may be bonded by interposing an adhesive member between the liquid crystal display panel 10 and the bottom plate 21 of the panel support member 20. That is, when such an adhesive member is used, both are adhered by the adhesive member and the resin 40 filled in the resin filling space 30, and thus the fixing strength of the liquid crystal display panel 10 to the panel support member 20 is excellent.
  • the panel support member 20 and the liquid crystal display panel 10 may be bonded only by the adhesive force of the resin 40 to be filled without using an adhesive member.
  • the resin 40 filled in the resin filling space 30 covers the boundary between the first substrate 11 and the second substrate 12 (indicated by B1 in FIG. 4A). With this configuration, the filled resin 40 reinforces the boundary B ⁇ b> 1 between the first substrate 11 and the second substrate 12 with the adhesive force (the first substrate 11 and the second substrate 12 are joined from the side surface of the liquid crystal display panel 10. To do). Therefore, the bonding strength between the first substrate 11 and the second substrate 12 constituting the liquid crystal display panel 10 is improved.
  • the resin 40 filled in the resin filling space 30 is excellent in air and moisture insulation properties. In other words, the presence of the resin 40 prevents gas and moisture from entering from the side surface of the liquid crystal display panel 10 into the panel.
  • the resin 40 filled in the resin filling space 30 can improve the bonding strength between the first substrate 11 and the second substrate 12 constituting the liquid crystal display panel 10, and Intrusion of gas and moisture into the display panel from the side of the display panel can be prevented. Further, the liquid surface display panel can be bonded and fixed to the panel support member 20. Moreover, since the resin filling space 30 filled with such a resin 40 is formed by inclining the side wall 22 of the panel support member 20, the size (width) of the frame region surrounding the liquid crystal display panel 10 is increased. Can be kept as small as possible.
  • the width E (width) of the injection port for injecting the resin 40 and the width W (thickness) of the side wall 22 are set in this embodiment ( Assume that the setting is the same as the configuration shown in FIG. As can be seen by comparing the two figures, the frame region F1 having the configuration according to the present embodiment shown in FIG. 4A is smaller than the frame region F2 having the configuration in which the inclined surface is not formed on the side wall. Is clear.
  • the liquid crystal display device 1 according to the present embodiment shown in FIG. 4A is excellent in workability of injecting the resin 40 as compared with the configuration shown in FIG.
  • the size of the resin filling space 30 is relatively small, and the amount of resin to be injected is small for the area of the side surface of the liquid crystal display panel covered with the resin. Therefore, the variation in the resin amount in the circumferential direction of the liquid crystal display panel 10 is also small. Therefore, it is possible to prevent problems such as the resin 40 overflowing on the surface of the liquid crystal display panel 10 and covering a part of the display area, or a portion where a sufficient amount of the resin 40 is not injected is generated.
  • the deepest position D of the resin filling space 30 filled with the resin 40 and the center position C in the thickness direction of the second substrate 12 on the side surface of the display panel are designed to substantially coincide (having the same height).
  • the boundary B ⁇ b> 1 between the first substrate 11 and the second substrate 12 can be reliably covered with the resin 40 filled in the resin filling space 30.
  • the reason for this configuration is that the first substrate 11 and the second substrate 12 constituting the liquid crystal display panel 10 are extremely thin and are easily affected by manufacturing errors of the respective members. That is, even if the deepest position D of the resin filling space 30 moves upward (on the opening 23 side) due to manufacturing errors of each member, the boundary B1 between the first substrate 11 and the second substrate 12 is reliably filled with resin.
  • the deepest position D of the resin-filled space 30 and the center position C in the thickness direction of the second substrate 12 is desirable to design the deepest position D of the resin-filled space 30 and the center position C in the thickness direction of the second substrate 12 as described above. Further, even if the deepest position D of the resin filling space 30 is moved downward due to a manufacturing error of each member, the side surface of the liquid crystal display panel 10 (second substrate 12) and the opposing surface 221 that is in close contact or in contact with the panel are formed. The part which overlaps in the plane direction of can be ensured reliably. That is, at the time of assembly, it is possible to secure a portion for positioning the liquid crystal display panel 10 with respect to the panel support member, and it is possible to prevent the resin 40 injected into the resin filling space 30 from dropping below the liquid crystal display panel 10.
  • the upper end edge S1 of the inclined surface 222 formed on the side wall 22 of the panel support member 20 and the upper end edge S2 of the side surface of the liquid crystal display panel 10 are substantially the same height. .
  • the height of the upper end edge S1 of the inclined surface 222 formed on the side wall 22 of the panel support member 20 is substantially the same height as the surface of the first substrate 11.
  • Such a configuration makes it difficult for the resin 40 injected into the resin filling space 30 to overflow. This is because the resin filling space 30 in which the resin 40 can be filled up to at least the height of the upper edge S2 of the side surface of the liquid crystal display panel 10 is formed (if the side wall 22 is low, the resin 40 overflows).
  • the upper end edge S1 of the inclined surface 222 formed on the side wall 22 of the panel support member 20 is made higher than the upper end edge S2 of the side surface of the liquid crystal display panel 10, and the above-described configuration is generated by the formation of the inclined surface 222. There is no denying the adoption of a larger space configuration.
  • the boundary B ⁇ b> 2 between the facing surface 221 and the inclined surface 222 is formed in a curved surface on the side wall 22 of the panel support member 20.
  • the “curved surface” does not necessarily indicate only a smooth curved surface. Any configuration may be used as long as the edge formed by the facing surface 221 and the inclined surface 222 is cut off (chamfered). This prevents the liquid crystal display panel 10 from being damaged by the edge of the side wall 22 when the liquid crystal display panel 10 is assembled to the panel support member 20. Further, the liquid crystal display panel 10 can be easily assembled to the panel support member 20.
  • the boundary B3 between the inclined surface 222 and the upper end surface of the side wall 22 may be formed into a curved surface.
  • the inclined surface 222 having such a shape is formed on a part of the side wall 22 of the panel support member 20 as described above. Specifically, it is formed on the inner surface of the side wall 22a, a part of the inner surface of the side wall 22b, and a part of the inner surface of the side wall 22c, and is formed around the protruding portion 121 of the second substrate 12. Absent. Therefore, the liquid crystal display device 1 is provided with a blocking portion 34 that blocks the resin 40 injected into the resin filling space 30 from flowing into other spaces (see FIGS. 1 to 3).
  • the blocking portion 34 in the present embodiment is a wall that rises in a direction orthogonal to the length direction of the resin filling space 30.
  • the shape of the blocking part 34 can be changed as appropriate. For example, a method of separately fixing a structure that does not allow the resin 40 to pass through may be applied to the boundary between the resin-filled space 30 filled with the resin 40 and other spaces.
  • the resin 40 filled in the resin filling space 30 is preferably black that does not transmit light emitted from the backlight device (light source 13) toward the liquid crystal display panel 10.
  • the resin 40 filled in the filling space is black, light that leaks from the side surface of the liquid crystal display panel 10 by the black resin 40 (shown schematically by a dotted arrow in FIG. 7). Therefore, the liquid crystal display device 1 having excellent display quality with little light leakage can be obtained.
  • the resin 40 to be filled is colored, it is easy to check whether or not the resin 40 is filled.
  • the resin material to be used contains a black dye, a black pigment (for example, carbon black) or the like.
  • the reason why the configuration of using such a black resin has been conceived is as follows.
  • the resin filled in the resin filling space 30 is made black, and a configuration has been devised in which light leakage from the side surface of the liquid crystal display panel 10 is prevented.
  • liquid crystal display device 1 having the liquid crystal display panel 10 has been described as an embodiment of the present invention, the technical idea of the present invention is applied to a display device having another display panel (for example, an organic EL panel). It is also possible to apply. That is, any type of display device can be used as long as it has a flat display panel and can be supported by the panel support member so as to surround the side surface of the display panel. Good.
  • liquid crystal display device 1 has been described as being a liquid crystal display device used in a mobile phone, but the liquid crystal display device used in other devices (for example, a television receiver) is used. Is also applicable.
  • the configuration of the panel support member 20 provided in the liquid crystal display device 1 according to the embodiment of the present invention is an example. If it is a panel support member which has the side wall surrounding the side surface of a display panel, the structure can be changed suitably.

Abstract

The present invention provides a display device that is capable of ensuring adequate anchoring strength for a display panel with respect to a panel support member, while maintaining the size of a frame region surrounding the display panel; and that is capable of preventing the penetration of gas or moisture into the display panel. This display device is provided with a display panel (10) that displays images, and a panel support member (20) in which the display surface side of the display panel (10) is open, and which has a side wall (22) surrounding the side surface of the display panel (10). An inclined surface (222) that is inclined from the opposite surface side, which is opposite the side surface of the display panel (10), to the opening is formed on at least part of the inner periphery of the side wall (20) of the panel support member (20), and the space (30) between the inclined surface (222) and the side surface of the display panel (10) is filled with a resin (40).

Description

表示装置および液晶表示装置Display device and liquid crystal display device
　本発明は、表示装置および液晶表示装置に関し、さらに詳しくは、表示パネル（液晶表示パネル）と、その表示パネル（液晶表示パネル）の側面を囲むように支持するパネル支持部材とを備える表示装置および液晶表示装置に関するものである。 The present invention relates to a display device and a liquid crystal display device, and more specifically, a display device including a display panel (liquid crystal display panel) and a panel support member that supports the display panel (liquid crystal display panel) so as to surround a side surface thereof. The present invention relates to a liquid crystal display device.
　画像を表示する表示装置、特に携帯電話などのモバイル機器に用いられる液晶表示装置などでは、装置全体の大きさを維持しつつ画像の表示領域をより大きくするためや、装置全体をより小型にするため、表示領域の周囲に形成される額縁領域を小さくすることが求められている。額縁領域を小さくするためには、例えば、表示パネル周縁の非表示領域の幅を小さくすることが考えられる。しかし、かかる非表示領域は、二枚の基板の接着代として使用される領域であるため、表示パネル周縁の非表示領域の幅が小さくなると二枚の基板の貼り合せ強度が低下したり、表示パネル内部への気体や湿気の侵入といった問題を招く。 In a display device that displays an image, particularly a liquid crystal display device used in a mobile device such as a mobile phone, in order to increase the image display area while maintaining the size of the entire device, or to reduce the size of the entire device. For this reason, it is required to reduce the frame area formed around the display area. In order to reduce the frame area, for example, it is conceivable to reduce the width of the non-display area at the periphery of the display panel. However, since such a non-display area is an area used as a bonding allowance between two substrates, if the width of the non-display area at the periphery of the display panel is reduced, the bonding strength of the two substrates is reduced, This causes problems such as gas and moisture intrusion into the panel.
　このような問題を解決するため、下記特許文献１には、表示パネルの側面を樹脂（ガスバリア層）で覆うことで、表示パネル内部への気体や湿気の侵入の防止を図った構成が記載されている。 In order to solve such a problem, the following Patent Document 1 describes a configuration in which the side of the display panel is covered with a resin (gas barrier layer) to prevent intrusion of gas and moisture into the display panel. ing.
　また、特許文献１と同様の表示パネル側面を樹脂で覆う構成として、下記特許文献２に記載されるような、表示パネルの側面とパネル支持部材の側壁との間（微小な隙間）に接着剤（樹脂）を注入した構成が知られている。なお、かかる特許文献２は、パネル支持部材に対する表示パネルの固定強度の向上を図ったものであり、表示パネルを構成する二枚の基板の貼り合せ強度や、表示パネル内部への気体や湿気の侵入といった観点については全く記載がなく、これらの問題を解決しようとする構成については開示がない。 Moreover, as a structure which covers the display panel side surface similar to Patent Document 1 with a resin, an adhesive is provided between the side surface of the display panel and the side wall of the panel support member (a minute gap) as described in Patent Document 2 below. A configuration in which (resin) is injected is known. In addition, this patent document 2 aims at the improvement of the fixing strength of the display panel with respect to a panel support member, the bonding intensity | strength of the two board | substrates which comprise a display panel, and the gas and moisture inside a display panel There is no description of the point of view such as intrusion, and there is no disclosure of a configuration that attempts to solve these problems.
特開２００９－１０３９０１号公報JP 2009-103901 A 特開２００７－７８９１２号公報JP 2007-78912 A
　特許文献１に記載の構成は、表示パネル側面を覆う樹脂層（ガスバリア層）を型枠で形成した後、その型枠を外したり、（場合によっては）余分な樹脂層を除去するという工程が必要となる。また、表示パネルの側面からパネルの平面方向に延びる樹脂層が形成されているため、当該樹脂層の大きさ分、表示装置の額縁領域が増すことになる。 In the configuration described in Patent Document 1, a resin layer (gas barrier layer) that covers the side surface of the display panel is formed with a mold, and then the mold is removed or (in some cases) an excess resin layer is removed. Necessary. Further, since the resin layer extending in the plane direction of the panel from the side surface of the display panel is formed, the frame area of the display device is increased by the size of the resin layer.
　一方、特許文献２に記載の構成は、接着剤（樹脂）が注入される表示パネルの側面とパネル支持部材の側壁との間の隙間が、どの程度の大きさなのか、また、どの程度の樹脂が隙間を埋めているのかが不明であるため、十分な表示パネル内部への気体や湿気の侵入の防止効果が得られるとは言い難い。さらに、モバイル機器などに用いられる小型の表示装置になると、接着剤が注入される上記隙間が微小なものとなるから、接着剤を注入する入口が狭く作業性が悪い。また、その微小な隙間から適量の接着剤を注入することが困難である。例えば、隙間に注入された接着剤が表示パネル表面に溢れ表示領域の一部を覆ってしまったり、十分な量の接着剤が注入されていない部分が生じたりする問題がある。 On the other hand, in the configuration described in Patent Document 2, the size of the gap between the side surface of the display panel into which the adhesive (resin) is injected and the side wall of the panel support member is large. Since it is unclear whether the resin fills the gap, it is difficult to say that a sufficient effect of preventing gas or moisture from entering the display panel can be obtained. Furthermore, in a small display device used for a mobile device or the like, since the gap into which the adhesive is injected becomes minute, the inlet for injecting the adhesive is narrow and workability is poor. Also, it is difficult to inject an appropriate amount of adhesive from the minute gap. For example, there is a problem that the adhesive injected into the gap overflows on the surface of the display panel and covers a part of the display area, or a portion where a sufficient amount of adhesive is not injected is generated.
　これに対し、例えば、樹脂（接着剤）が注入される空間（隙間）を拡げることによって、樹脂の注入の作業性を向上させることも考えられる。しかし、かかる構成とすれば、樹脂が注入される空間を拡げた分、パネル支持部材の側壁を含む額縁領域の幅が大きくなってしまう。 On the other hand, for example, it is conceivable to improve the workability of the resin injection by expanding the space (gap) into which the resin (adhesive) is injected. However, with such a configuration, the width of the frame region including the side wall of the panel support member is increased by the amount of expansion of the space into which the resin is injected.
　上記事情に鑑み、本発明が解決しようとする課題は、表示パネルを構成する二枚の基板の貼り合せ強度低下による基板の剥離、および、表示パネル内部への気体や湿気の侵入を防止しつつ、表示領域の周囲の額縁領域を小さくすることにある。 In view of the above circumstances, the problem to be solved by the present invention is to prevent the peeling of the substrate due to the decrease in the bonding strength of the two substrates constituting the display panel, and the intrusion of gas and moisture into the display panel. The purpose is to reduce the frame area around the display area.
　上記課題を解決するために本発明にかかる表示装置は、画像を表示する表示面側に位置する第一基板と、この第一基板に貼り合わされ、前記表示面の反対側に位置する第二基板と、を有する表示パネルと、この表示パネルの側面を囲む側壁を有し、前記表示パネルの表示面側が開口したパネル支持部材と、を備え、前記パネル支持部材の側壁には、その内周の少なくとも一部に、前記表示パネルの側面と対向する対向面側から前記開口にかけて傾斜した傾斜面が形成され、前記傾斜面と前記表示パネルの側面との間の空間に、前記第一基板と第二基板の境目を覆うように樹脂が充填されていることを要旨とする。 In order to solve the above problems, a display device according to the present invention includes a first substrate positioned on a display surface side for displaying an image, and a second substrate bonded to the first substrate and positioned on the opposite side of the display surface. A display panel having a side wall that surrounds the side surface of the display panel, and a panel support member having an opening on the display surface side of the display panel. At least in part, an inclined surface that is inclined from the opposite surface side facing the side surface of the display panel to the opening is formed, and the first substrate and the second substrate are formed in a space between the inclined surface and the side surface of the display panel. The gist is that the resin is filled so as to cover the boundary between the two substrates.
　また、前記樹脂が充填される空間の最も深い位置と、前記表示パネルの側面における前記第二基板の厚み方向中央位置とが略一致していればよい。 Further, the deepest position in the space filled with the resin and the central position in the thickness direction of the second substrate on the side surface of the display panel need only substantially coincide with each other.
　また、前記傾斜面の上端縁と、前記表示パネルの側面の上端縁とが略同じ高さであればよい。 Further, the upper end edge of the inclined surface and the upper end edge of the side surface of the display panel may be substantially the same height.
　また、前記対向面と前記傾斜面との境目が、曲面に形成されていればよい。 Further, the boundary between the facing surface and the inclined surface may be formed as a curved surface.
　また、前記傾斜面は、前記パネル支持部材の側壁の一部に形成されており、前記パネル支持部材の側壁における、前記傾斜面が形成された箇所と、前記傾斜面が形成されていない箇所との境目には、前記樹脂が充填される空間とその他の空間とを遮断する遮断部が設けられていればよい、 Further, the inclined surface is formed on a part of the side wall of the panel support member, and the portion where the inclined surface is formed and the portion where the inclined surface is not formed on the side wall of the panel support member, It is sufficient that a blocking portion for blocking the space filled with the resin and other spaces is provided at the boundary of
　また、前記第二基板から前記第一基板の方向に光を照射するバックライトをさらに備える場合、前記樹脂が黒色であればよい。 Further, when the backlight further irradiates light from the second substrate to the first substrate, the resin may be black.
　また、上記課題を解決するために本発明にかかる液晶表示装置は、上記いずれかの場合において、前記表示パネルを、第一基板と第二基板との間に液晶が充填された液晶表示パネルとした液晶表示装置であることを要旨とする。 In order to solve the above problems, in any of the above cases, the liquid crystal display device according to the present invention includes a liquid crystal display panel in which liquid crystal is filled between a first substrate and a second substrate. The gist of the present invention is the liquid crystal display device.
　本発明にかかる表示装置は、表示パネルを支持するパネル支持部材の側壁に傾斜面を形成し、その傾斜面と表示パネル側面との間の空間に、第一基板と第二基板の境目を覆うように樹脂を充填した構成である。この空間に充填された樹脂によって、表示パネルをパネル支持部材に固定するとともに、第一基板と第二基板の貼り合せ強度を向上させることができる。また、表示パネル側面からの表示パネル内部への気体や湿気の侵入も防止できる。 The display device according to the present invention forms an inclined surface on the side wall of the panel support member that supports the display panel, and covers the boundary between the first substrate and the second substrate in a space between the inclined surface and the side surface of the display panel. Thus, the resin is filled. The resin filled in the space can fix the display panel to the panel support member and improve the bonding strength between the first substrate and the second substrate. In addition, it is possible to prevent gas and moisture from entering the display panel from the side of the display panel.
　しかも、かかる構成によれば、側壁に形成した傾斜面によって、表示パネルの額縁領域の幅を大きくすることなく、樹脂を注入する入口を大きくすることができる。すなわち、額縁領域の大きさを維持しつつ、樹脂の注入作業を容易にできる。また、傾斜面が形成された部分以外は、側壁の厚みを従来と同じに設定できるから、側壁の強度が著しく低下することもない。さらには、樹脂が充填される部分が局所的である（樹脂が充填される空間の大きさが比較的小さい）から、樹脂に覆われる表示パネル側面の面積の割に注入する樹脂量が少なく、表示パネルの周方向における注入樹脂量のばらつきも小さくなる。したがって、樹脂が表示パネル表面に溢れ表示領域の一部を覆ってしまったり、十分な量の接着剤が注入されていない部分が生ずるなど、注入樹脂量のばらつきによる不具合の発生が防止される。 Moreover, according to such a configuration, the inclined surface formed on the side wall can increase the inlet for injecting the resin without increasing the width of the frame region of the display panel. That is, the resin injection operation can be facilitated while maintaining the size of the frame region. Moreover, since the thickness of the side wall can be set to be the same as the conventional thickness except for the portion where the inclined surface is formed, the strength of the side wall is not significantly reduced. Furthermore, since the portion filled with resin is local (the size of the space filled with resin is relatively small), the amount of resin to be injected is small relative to the area of the side surface of the display panel covered with resin, Variations in the amount of injected resin in the circumferential direction of the display panel are also reduced. Therefore, the occurrence of problems due to variations in the amount of injected resin, such as the resin overflowing on the display panel surface and covering a part of the display area or a portion where a sufficient amount of adhesive is not injected, is prevented.
　この場合、樹脂が充填される空間の最も深い位置が、第二基板の厚み方向中央位置と略一致していれば（略一致させるように設計すれば）、第一基板と第二基板の境目を確実に樹脂で覆うことができる。具体的には、各部材の製造誤差などにより、樹脂が充填される空間の最も深い位置が開口側（表示面側）に移動したとしても、第一基板と第二基板の境目を確実に当該樹脂が充填される空間に臨むように位置させることができる。また、各部材の製造誤差などにより、樹脂が充填される空間の最も深い位置が開口側（表示面側）とは反対方向に移動したとしても、表示パネル（第二基板）側面と対向面とがパネルの平面方向で重なる部分を確実に確保できる。つまり、組立時において、パネル支持部材に対する表示パネルの位置決め代となる部分を確保できるとともに、上記空間に注入された樹脂が、表示パネルの下方に垂れるのを防止できる。 In this case, if the deepest position of the space filled with the resin is substantially coincident with the central position in the thickness direction of the second substrate (if designed so as to be substantially coincident), the boundary between the first substrate and the second substrate Can be reliably covered with resin. Specifically, even if the deepest position of the space filled with resin moves to the opening side (display surface side) due to manufacturing errors of each member, the boundary between the first substrate and the second substrate is surely affected. It can be positioned so as to face the space filled with resin. Even if the deepest position of the space filled with the resin moves in the direction opposite to the opening side (display surface side) due to manufacturing error of each member, the side surface of the display panel (second substrate) and the opposing surface Can reliably secure the overlapping portion in the plane direction of the panel. That is, at the time of assembly, it is possible to secure a portion serving as a positioning margin of the display panel with respect to the panel support member, and it is possible to prevent the resin injected into the space from dripping below the display panel.
　そして、パネル支持部材の側壁に形成された傾斜面の上端縁と、表示パネルの側面の上端縁とを略同じ高さにすれば、樹脂が溢れにくくなる。 Further, if the upper end edge of the inclined surface formed on the side wall of the panel support member and the upper end edge of the side surface of the display panel are made substantially the same height, the resin is less likely to overflow.
　さらに、対向面と前記傾斜面との境目を曲面に形成することで、パネル支持部材の側壁の内周にエッジが存在しないようにすれば、パネル支持部材の側壁の内側に表示パネルを組付けようとする際、側壁のエッジによって表示パネルが傷ついてしまったり、表示パネルが組付け難いなどの不具合の発生が防止される。 Furthermore, if the boundary between the opposing surface and the inclined surface is formed into a curved surface so that no edge exists on the inner periphery of the side wall of the panel support member, the display panel is assembled inside the side wall of the panel support member. When trying to do so, it is possible to prevent the occurrence of problems such as the display panel being damaged by the edge of the side wall or the display panel being difficult to assemble.
　また、パネル支持部材の側壁の一部に傾斜面が形成される場合、樹脂が充填される空間とその他の空間とを遮断する遮断部が設けられていれば、傾斜面によって形成される空間にのみ樹脂が行き渡り、その他の箇所に侵入してしまうことがない。 In addition, when an inclined surface is formed on a part of the side wall of the panel support member, the space formed by the inclined surface is provided if a blocking portion that blocks the space filled with the resin and the other space is provided. Only the resin does not spread and invade other places.
　また、表示パネル側面を覆う上記樹脂が黒色であれば、所定の場所に樹脂が注入されたかどうかの目視による確認が容易となる。また、上記表示装置が、第二基板から第一基板の方向に光を照射するバックライト装置を必要とするものである場合においては、当該樹脂が遮光層となり、表示パネル側面からの光漏れが抑制される。すなわち、小さい額縁領域であっても、表示パネル周囲からの光漏れが少ない良質な画像を表示する表示装置とすることができる。 In addition, if the resin covering the side surface of the display panel is black, it is easy to visually check whether the resin has been injected into a predetermined place. Further, when the display device requires a backlight device that irradiates light in the direction from the second substrate to the first substrate, the resin serves as a light shielding layer, and light leakage from the side surface of the display panel is prevented. It is suppressed. That is, even in a small frame region, a display device that displays a high-quality image with little light leakage from the periphery of the display panel can be obtained.
本発明の一実施形態にかかる液晶表示装置の外観斜視図である。1 is an external perspective view of a liquid crystal display device according to an embodiment of the present invention. 本発明の一実施形態にかかる液晶表示装置を開口側から見た平面図である。It is the top view which looked at the liquid crystal display device concerning one embodiment of the present invention from the opening side. 本発明の一実施形態にかかる液晶表示装置を液晶表示パネルとパネル支持部材とに分解して示した斜視図である。It is the perspective view which decomposed | disassembled and showed the liquid crystal display device concerning one Embodiment of this invention to the liquid crystal display panel and the panel support member. （ａ）は図１におけるＡ－Ａ線断面を模式的に示した図（ハッチング省略）である。（ｂ）は側壁に傾斜面が形成されていない構成において、樹脂を注入する注入口の幅Ｅおよび側壁の幅Ｗ（厚み）を、（ａ）に示す本実施形態にかかる構成と同じに設定したものを比較として示した図である。FIG. 2A is a diagram schematically showing a cross section taken along line AA in FIG. 1 (hatching is omitted). (B) is the configuration in which the inclined surface is not formed on the side wall, and the width E of the inlet for injecting the resin and the width W (thickness) of the side wall are set to be the same as the configuration according to the present embodiment shown in (a) It is the figure which showed what was done as a comparison. パネル支持部材の側面における対向面と傾斜面との境目が曲面に形成された構成の断面を模式的に示した図である（ハッチング省略）。It is the figure which showed typically the cross section of the structure by which the boundary of the opposing surface and inclined surface in the side surface of a panel support member was formed in the curved surface (hatching is abbreviate | omitted). パネル支持部材の側面における傾斜面と上端面の境目が曲面に形成された構成の断面を模式的に示した図である（ハッチング省略）。It is the figure which showed typically the cross section of the structure by which the boundary of the inclined surface and upper end surface in the side surface of a panel support member was formed in the curved surface (hatching is abbreviate | omitted). 接着剤充填空間に充填された樹脂が黒色である構成の断面を模式的に示した図である（ハッチング省略）。It is the figure which showed typically the cross section of the structure whose resin with which the adhesive agent filling space was filled is black (hatching is omitted).
　以下、本発明の実施形態について図１～７を参照して詳細に説明する。なお、以下の説明における（本発明における）高さ方向（高低、上下、深浅）とは、図４～図７における上下方向をいうものとする。 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. In the following description, the height direction (in the present invention) (high, low, vertical, deep) means the vertical direction in FIGS.
　本発明の実施形態にかかる液晶表示装置１は、携帯電話機に用いられる液晶表示装置であり、画像を表示する液晶表示パネル１０と、この液晶表示パネル１０を支持するパネル支持部材２０とを備える。なお、図４～図７に示す断面の模式図において、液晶表示パネル１０を構成する基板（第一基板１１、第二基板１２）や、偏光板（表側偏光板１１ａ、裏側偏光板１２ａ）は、実際には非常に薄いものであるが、説明を分かりやすくするため厚みを強調して描いている。また、これらの図では、図を分かりやすくするため、断面のハッチングを省略してある。 A liquid crystal display device 1 according to an embodiment of the present invention is a liquid crystal display device used for a mobile phone, and includes a liquid crystal display panel 10 that displays an image and a panel support member 20 that supports the liquid crystal display panel 10. 4 to 7, the substrates (first substrate 11 and second substrate 12) and polarizing plates (front-side polarizing plate 11a and back-side polarizing plate 12a) constituting the liquid crystal display panel 10 are shown. Although it is actually very thin, it is drawn with emphasis on thickness to make the explanation easy to understand. In these drawings, cross-sectional hatching is omitted for easy understanding of the drawings.
　図１～３に示すように、液晶表示パネル１０は、画像を表示する表示面側に配される第一基板１１と、この第一基板１１に対向して表示面とは反対側に配される第二基板１２とを備える。かかる第一基板１１と第二基板１２とは、所定のセルギャップをおいて対向し、その基板間に液晶（図示せず）が充填されている。 As shown in FIGS. 1 to 3, the liquid crystal display panel 10 is disposed on the first substrate 11 disposed on the display surface side for displaying an image, and on the opposite side of the display surface to face the first substrate 11. And a second substrate 12. The first substrate 11 and the second substrate 12 face each other with a predetermined cell gap, and a liquid crystal (not shown) is filled between the substrates.
　第一基板１１は、カラーフィルタ（ＣＦ）基板である。この第一基板１１は、基板上に、複数のカラーフィルタがマトリクス上（格子状に形成されたブラックマトリクス１２２の内側にカラーフィルタが設けられる）に形成されるとともに、基板のほぼ全面に透明の共通電極が形成されたものである。液晶層を透過した光は、このカラーフィルタを通ることでカラー画像として認識される。 The first substrate 11 is a color filter (CF) substrate. The first substrate 11 has a plurality of color filters formed on a matrix (a color filter is provided inside a black matrix 122 formed in a lattice shape) on the substrate, and transparent over almost the entire surface of the substrate. A common electrode is formed. The light transmitted through the liquid crystal layer is recognized as a color image by passing through the color filter.
　第二基板１２は、薄膜トランジスタ（ＴＦＴ）アレイ基板である。この第二基板１２は、基板上に、ＴＦＴおよび画素電極などがマトリクス状に形成されたものである。第一基板１１の表面（液晶表示パネル１０の表（上）面）と第二基板１２の表面（液晶表示パネル１０の裏（下）面）には、それぞれ、表側偏光板１１ａ、裏側偏光板１２ａが貼り付けられている。 The second substrate 12 is a thin film transistor (TFT) array substrate. The second substrate 12 is a substrate in which TFTs, pixel electrodes, and the like are formed in a matrix. On the surface of the first substrate 11 (the front (upper) surface of the liquid crystal display panel 10) and the surface of the second substrate 12 (the back (lower) surface of the liquid crystal display panel 10), the front side polarizing plate 11a and the back side polarizing plate, respectively. 12a is pasted.
　また、本実施形態では、第二基板１２の方が第一基板１１よりも大きく形成されている。詳しくは第二基板１２の一側が、第一基板１１の同方向の一側よりも外側に張り出して形成されている（かかる部分を張り出し部１２１と称する）。かかる張り出し部１２１には、フレキシブル基板１４が接続されている。このフレキシブル基板１４を介して、第一基板１１は図示されない外部機器と電気的に接続され、かかる外部機器によって上記ＴＦＴなどが制御される。 In the present embodiment, the second substrate 12 is formed larger than the first substrate 11. Specifically, one side of the second substrate 12 is formed to protrude outward from one side in the same direction of the first substrate 11 (this portion is referred to as an overhang portion 121). The flexible substrate 14 is connected to the overhang portion 121. The first substrate 11 is electrically connected to an external device (not shown) through the flexible substrate 14, and the TFT and the like are controlled by the external device.
　なお、かかる液晶表示パネル１０の構成はあくまで例示であって、二つの基板の間に液晶層が形成されたものであれば、その構成は適宜変更可能である。例えば、表側偏光板１１ａ、裏側偏光板１２ａが、第一基板１１や第二基板１２の内側に配された液晶表示パネルであってもよい。 The configuration of the liquid crystal display panel 10 is merely an example, and the configuration can be changed as appropriate as long as a liquid crystal layer is formed between two substrates. For example, the front side polarizing plate 11 a and the back side polarizing plate 12 a may be a liquid crystal display panel arranged inside the first substrate 11 or the second substrate 12.
　液晶表示装置１のバックライト装置は、光源１３を備える。光源１３は、例えば発光ダイオード（ＬＥＤ）で構成される点状光源である。光源１３は、液晶表示パネル１０の下方であってパネル支持部材２０の内側に収容され、図示されない電力供給用の接続部材（例えばフレキシブル基板などから構成される）を介して外部機器と電気的に接続されている。かかる外部機器によって、光源１３への電力の供給が制御される。光源１３から出射された光は、パネル支持部材２０の内側に入射する。パネル支持部材２０の内側には図示されない反射シート、導光板、光学シートなどの光学部材が配されている。このような光学部材は、光源１３から出射された光を効率よく液晶表示パネル１０側に出射させる。光は液晶表示パネル１０の背面から（第二基板１２側から）入射する。そして、液晶層を通過した光は第一基板１１（カラーフィルタ）を通って、カラー画像として認識される。なお、かかるバックライト装置の構成は適宜変更可能であり、公知のバックライト装置の構成が適用できる。 The backlight device of the liquid crystal display device 1 includes a light source 13. The light source 13 is a point light source composed of, for example, a light emitting diode (LED). The light source 13 is housed inside the panel support member 20 below the liquid crystal display panel 10 and electrically connected to an external device via a power supply connection member (not shown) (for example, a flexible substrate). It is connected. The supply of power to the light source 13 is controlled by the external device. The light emitted from the light source 13 enters the inside of the panel support member 20. Optical members such as a reflection sheet, a light guide plate, and an optical sheet (not shown) are arranged inside the panel support member 20. Such an optical member efficiently emits the light emitted from the light source 13 to the liquid crystal display panel 10 side. Light enters from the back surface of the liquid crystal display panel 10 (from the second substrate 12 side). The light that has passed through the liquid crystal layer passes through the first substrate 11 (color filter) and is recognized as a color image. Note that the configuration of the backlight device can be changed as appropriate, and the configuration of a known backlight device can be applied.
　一方、パネル支持部材２０は、上記構成を有する液晶表示パネル１０を支持する盆（浅い箱）状の部材であり、合成樹脂（例えばポリカーボネート樹脂）で一体成形されてなる。このパネル支持部材２０は、平面視略長方形の平板状の底板２１と、底板２１の各側縁（四辺）から高さ方向に立ち上がるように形成された側壁２２とを有し、固定される液晶表示パネル１０の表示面側（上方）が開口（以下、開口２３と称する）している。以下、底板２１の各側縁に沿う側壁２２を区別し、フレキシブル基板１４が配される側の構成を側壁２２ｄ、それに対向する構成（短手方向に沿う側壁）を側壁２２ａ、側壁２２ａおよび側壁２２ｄと略直交する構成（長手方向に沿う側壁）を側壁２２ｂ、側壁２２ｃと称することもある。 On the other hand, the panel support member 20 is a tray (shallow box) -like member that supports the liquid crystal display panel 10 having the above-described configuration, and is integrally formed with a synthetic resin (for example, polycarbonate resin). The panel support member 20 includes a flat bottom plate 21 having a substantially rectangular shape in plan view, and side walls 22 formed so as to rise in the height direction from the respective side edges (four sides) of the bottom plate 21, and are fixed liquid crystal. The display surface side (upper) of the display panel 10 has an opening (hereinafter referred to as an opening 23). Hereinafter, the side wall 22 along each side edge of the bottom plate 21 is distinguished, the configuration on the side where the flexible substrate 14 is arranged is the side wall 22d, and the configuration (side wall along the short side) is the side wall 22a, the side wall 22a, and the side wall A configuration (a side wall along the longitudinal direction) substantially orthogonal to 22d may be referred to as a side wall 22b and a side wall 22c.
　底板２１には、その表側にパネル支持面２１１が形成されている。かかるパネル支持面２１１上に、液晶表示パネル１０（第二基板１２）がパネル支持部材２０の開口２３を覆うように載置されている。パネル支持面２１１は、底板２１の各辺に沿って（側壁２２に沿って）形成されている。なお、パネル支持面２１１と液晶表示パネル１０との間に、液晶表示パネル１０をより強固に固定するための接着部材が介在された構成としてもよい。 A panel support surface 211 is formed on the bottom plate 21 on the front side. On the panel support surface 211, the liquid crystal display panel 10 (second substrate 12) is placed so as to cover the opening 23 of the panel support member 20. The panel support surface 211 is formed along each side of the bottom plate 21 (along the side wall 22). Note that an adhesive member for fixing the liquid crystal display panel 10 more firmly may be interposed between the panel support surface 211 and the liquid crystal display panel 10.
　側壁２２には、その内周の一部に、液晶表示パネル１０の側面と対向する対向面２２１、および、その対向面２２１からパネル支持部材２０の開口２３にかけて傾斜した傾斜面２２２が形成されている。具体的には、側壁２２ａの内側の面、側壁２２ｂの内側の面の一部、および、側壁２２ｃの内側の面の一部に、対向面２２１および傾斜面２２２が形成されている。パネル支持面２１１上に載置された液晶表示パネル１０は、その側面が対向面２２１と接触した状態で、パネル支持部材２０に固定されている。なお、液晶表示パネル１０の側面と対向面２２１とは必ずしも接触していなければならないわけではなく、微小な隙間を隔てて対向した状態にあってもよい。「微小な隙間」とは、後述する樹脂充填空間３０に注入される樹脂４０が、当該隙間から液晶表示パネル１０の下方に垂れてしまうことがないような隙間である。 On the side wall 22, an opposing surface 221 that faces the side surface of the liquid crystal display panel 10 and an inclined surface 222 that is inclined from the opposing surface 221 to the opening 23 of the panel support member 20 are formed on a part of the inner periphery thereof. Yes. Specifically, the opposing surface 221 and the inclined surface 222 are formed on the inner surface of the side wall 22a, a part of the inner surface of the side wall 22b, and a part of the inner surface of the side wall 22c. The liquid crystal display panel 10 placed on the panel support surface 211 is fixed to the panel support member 20 with its side surface in contact with the opposing surface 221. Note that the side surface of the liquid crystal display panel 10 and the facing surface 221 do not necessarily have to be in contact with each other, and may be in a state of facing each other with a minute gap. The “minute gap” is a gap that prevents the resin 40 injected into the resin filling space 30 described later from dripping down the liquid crystal display panel 10 from the gap.
　このようにしてパネル支持部材２０に固定される液晶表示パネル１０の側面と、パネル支持部材２０の側壁２２との間には、所定の大きさの空間（以下、樹脂充填空間３０と称する）が形成される。詳しくは、パネル支持部材２０の側壁２２に形成された傾斜面２２２によって、その傾斜面２２２と液晶表示パネル１０の側面との間に断面略三角形状の樹脂充填空間３０が形成される。かかる樹脂充填空間３０には、樹脂材料が充填されている（以下、この充填された樹脂材料を樹脂４０と称する）。この樹脂充填空間３０の構成（パネル支持部材２０の側壁２２の構成）の詳細については後述する。 A space having a predetermined size (hereinafter referred to as a resin-filled space 30) is provided between the side surface of the liquid crystal display panel 10 fixed to the panel support member 20 and the side wall 22 of the panel support member 20. It is formed. Specifically, the inclined surface 222 formed on the side wall 22 of the panel support member 20 forms a resin-filled space 30 having a substantially triangular cross section between the inclined surface 222 and the side surface of the liquid crystal display panel 10. The resin filling space 30 is filled with a resin material (hereinafter, the filled resin material is referred to as a resin 40). Details of the configuration of the resin filling space 30 (configuration of the side wall 22 of the panel support member 20) will be described later.
　なお、フレキシブル基板１４側の側壁２２ｄには、フレキシブル基板１４の幅よりも大きい切欠部２２３が形成されている。フレキシブル基板１４や、光源１３と外部機器とを接続する図示されない接続部材などは、かかる切欠部２２３を通じてパネル支持部材２０の外側に引き出されている。 Note that a cutout 223 larger than the width of the flexible substrate 14 is formed on the side wall 22d on the flexible substrate 14 side. A flexible substrate 14, a connection member (not shown) that connects the light source 13 and an external device, and the like are drawn to the outside of the panel support member 20 through the notch 223.
　以下、このような構成を有する液晶表示装置１における、樹脂充填空間３０ならびにその空間に充填される樹脂４０の構成（パネル支持部材２０の側壁２２の構成）について詳細に説明する。 Hereinafter, the configuration of the resin filling space 30 and the resin 40 filled in the space (the configuration of the side wall 22 of the panel support member 20) in the liquid crystal display device 1 having such a configuration will be described in detail.
　図４（ａ）に示すように、パネル支持部材２０の側壁２２に形成された傾斜面２２２によって、その傾斜面２２２と液晶表示パネル１０の側面との間には、断面略三角形状の所定の大きさの空間（樹脂充填空間３０）が形成される。かかる樹脂充填空間３０に、接着性や、遮気性（気体を通さない性質のことをいう）および遮湿性（湿気（水分）を通さない性質のことをいう）に優れる樹脂４０が充填されている。好適な樹脂としては、エポキシ樹脂などが例示できる。 As shown in FIG. 4A, the inclined surface 222 formed on the side wall 22 of the panel support member 20 has a predetermined triangular cross section between the inclined surface 222 and the side surface of the liquid crystal display panel 10. A space having a size (resin filling space 30) is formed. The resin-filled space 30 is filled with a resin 40 that is excellent in adhesiveness, air-tightness (refers to a property that does not allow gas to pass), and moisture-proof properties (refers to a property that does not pass moisture (moisture)). . Examples of suitable resins include epoxy resins.
　本実施形態では、樹脂充填空間３０に充填された樹脂４０が、液晶表示パネル１０とパネル支持部材２０とを固定する役割をなす。すなわち、充填される樹脂４０が接着力を有するため、当該樹脂４０が液晶表示パネル１０とパネル支持部材２０を接着する。上述したように、本実施形態において、液晶表示パネル１０とパネル支持部材２０の底板２１との間に接着部材を介在させることによって液晶表示パネル１０とパネル支持部材２０を接着してもよい。つまり、かかる接着部材が用いられる場合、接着部材および樹脂充填空間３０に充填された樹脂４０によって両者が接着されるため、パネル支持部材２０に対する液晶表示パネル１０の固定強度に優れる。なお、接着部材を用いず、充填される樹脂４０の接着力のみでパネル支持部材２０と液晶表示パネル１０を接着するものであっても構わない。 In this embodiment, the resin 40 filled in the resin filling space 30 serves to fix the liquid crystal display panel 10 and the panel support member 20. That is, since the resin 40 to be filled has an adhesive force, the resin 40 adheres the liquid crystal display panel 10 and the panel support member 20. As described above, in the present embodiment, the liquid crystal display panel 10 and the panel support member 20 may be bonded by interposing an adhesive member between the liquid crystal display panel 10 and the bottom plate 21 of the panel support member 20. That is, when such an adhesive member is used, both are adhered by the adhesive member and the resin 40 filled in the resin filling space 30, and thus the fixing strength of the liquid crystal display panel 10 to the panel support member 20 is excellent. Note that the panel support member 20 and the liquid crystal display panel 10 may be bonded only by the adhesive force of the resin 40 to be filled without using an adhesive member.
　また、樹脂充填空間３０に充填される樹脂４０は、第一基板１１と第二基板１２の境目（図４（ａ）においてＢ１で示す）を覆う。かかる構成により、充填された樹脂４０が、その接着力をもって、第一基板１１と第二基板１２の境目Ｂ１を補強する（液晶表示パネル１０の側面から第一基板１１と第二基板１２を接合する）。したがって、液晶表示パネル１０を構成する第一基板１１と第二基板１２の貼り合わせ強度を向上させる。 The resin 40 filled in the resin filling space 30 covers the boundary between the first substrate 11 and the second substrate 12 (indicated by B1 in FIG. 4A). With this configuration, the filled resin 40 reinforces the boundary B <b> 1 between the first substrate 11 and the second substrate 12 with the adhesive force (the first substrate 11 and the second substrate 12 are joined from the side surface of the liquid crystal display panel 10. To do). Therefore, the bonding strength between the first substrate 11 and the second substrate 12 constituting the liquid crystal display panel 10 is improved.
　また、樹脂充填空間３０に充填される樹脂４０は、遮気性および遮湿性に優れる。つまり、かかる樹脂４０の存在によって、液晶表示パネル１０側面からパネル内部への気体や湿気の侵入が阻止されている。 In addition, the resin 40 filled in the resin filling space 30 is excellent in air and moisture insulation properties. In other words, the presence of the resin 40 prevents gas and moisture from entering from the side surface of the liquid crystal display panel 10 into the panel.
　このように本実施形態によれば、樹脂充填空間３０に充填される樹脂４０によって、液晶表示パネル１０を構成する第一基板１１と第二基板１２の貼り合わせ強度を向上させることができ、かつ、表示パネル側面からの表示パネル内部への気体や湿気の侵入を防止できる。さらに、パネル支持部材２０に対し、液表表示パネルを接着固定できる。しかも、このような樹脂４０が充填される樹脂充填空間３０は、パネル支持部材２０の側壁２２を傾斜させることによって形成したものであるから、液晶表示パネル１０を囲む額縁領域の大きさ（幅）を可及的に小さく維持できる。 Thus, according to the present embodiment, the resin 40 filled in the resin filling space 30 can improve the bonding strength between the first substrate 11 and the second substrate 12 constituting the liquid crystal display panel 10, and Intrusion of gas and moisture into the display panel from the side of the display panel can be prevented. Further, the liquid surface display panel can be bonded and fixed to the panel support member 20. Moreover, since the resin filling space 30 filled with such a resin 40 is formed by inclining the side wall 22 of the panel support member 20, the size (width) of the frame region surrounding the liquid crystal display panel 10 is increased. Can be kept as small as possible.
　例えば、比較として示す図４（ｂ）のような側壁に傾斜面が形成されていない構成において、樹脂４０を注入する注入口の幅Ｅおよび側壁２２の幅Ｗ（厚み）を、本実施形態（図４（ａ）に示す構成）と同じに設定したとする。両図を比較すれば分かるように、図４（ａ）に示す本実施形態にかかる構成の額縁領域Ｆ１の方が、側壁に傾斜面が形成されていない構成の額縁領域Ｆ２よりも小さくなることは明らかである。 For example, in the configuration in which the inclined surface is not formed on the side wall as shown in FIG. 4B for comparison, the width E (width) of the injection port for injecting the resin 40 and the width W (thickness) of the side wall 22 are set in this embodiment ( Assume that the setting is the same as the configuration shown in FIG. As can be seen by comparing the two figures, the frame region F1 having the configuration according to the present embodiment shown in FIG. 4A is smaller than the frame region F2 having the configuration in which the inclined surface is not formed on the side wall. Is clear.
　そして、図４（ａ）に示した本実施形態にかかる液晶表示装置１は、図４（ｂ）に示した構成と比べ、樹脂４０を注入する作業性にも優れる。樹脂充填空間３０の大きさが比較的小さく、樹脂に覆われる液晶表示パネル側面の面積の割に注入する樹脂量が少ない。そのため、液晶表示パネル１０の周方向における樹脂量のばらつきも小さい。ゆえに、樹脂４０が液晶表示パネル１０表面に溢れ表示領域の一部を覆ってしまったり、十分な量の樹脂４０が注入されていない部分が生ずるなどの不具合の発生が防止される。 And the liquid crystal display device 1 according to the present embodiment shown in FIG. 4A is excellent in workability of injecting the resin 40 as compared with the configuration shown in FIG. The size of the resin filling space 30 is relatively small, and the amount of resin to be injected is small for the area of the side surface of the liquid crystal display panel covered with the resin. Therefore, the variation in the resin amount in the circumferential direction of the liquid crystal display panel 10 is also small. Therefore, it is possible to prevent problems such as the resin 40 overflowing on the surface of the liquid crystal display panel 10 and covering a part of the display area, or a portion where a sufficient amount of the resin 40 is not injected is generated.
　また、樹脂４０が充填される樹脂充填空間３０の最も深い位置Ｄと、表示パネルの側面における第二基板１２の厚み方向中央位置Ｃとは、略一致する（同じ高さになる）ように設計されている。これにより、第一基板１１と第二基板１２の境目Ｂ１を、確実に樹脂充填空間３０に充填される樹脂４０で覆うことができる。かかる構成とするのは、液晶表示パネル１０を構成する第一基板１１および第二基板１２は極めて薄いため、各部材の製造誤差などの影響を受けやすいからである。すなわち、各部材の製造誤差などにより、樹脂充填空間３０の最も深い位置Ｄが上方（開口２３側）に移動したとしても、第一基板１１と第二基板１２の境目Ｂ１を、確実に樹脂充填空間３０に臨むように位置させるため、上記のように樹脂充填空間３０の最も深い位置Ｄと第二基板１２の厚み方向中央位置Ｃとが一致するように設計することが望ましい。また、各部材の製造誤差などにより、樹脂充填空間３０の最も深い位置Ｄが下方に移動したとしても、液晶表示パネル１０（第二基板１２）側面と、近接または接触する対向面２２１とがパネルの平面方向で重なる部分を確実に確保できる。つまり、組立時において、パネル支持部材に対する液晶表示パネル１０の位置決め代となる部分を確保できるとともに、樹脂充填空間３０に注入された樹脂４０が、液晶表示パネル１０の下方に垂れるのを防止できる。 Further, the deepest position D of the resin filling space 30 filled with the resin 40 and the center position C in the thickness direction of the second substrate 12 on the side surface of the display panel are designed to substantially coincide (having the same height). Has been. Thereby, the boundary B <b> 1 between the first substrate 11 and the second substrate 12 can be reliably covered with the resin 40 filled in the resin filling space 30. The reason for this configuration is that the first substrate 11 and the second substrate 12 constituting the liquid crystal display panel 10 are extremely thin and are easily affected by manufacturing errors of the respective members. That is, even if the deepest position D of the resin filling space 30 moves upward (on the opening 23 side) due to manufacturing errors of each member, the boundary B1 between the first substrate 11 and the second substrate 12 is reliably filled with resin. In order to be positioned so as to face the space 30, it is desirable to design the deepest position D of the resin-filled space 30 and the center position C in the thickness direction of the second substrate 12 as described above. Further, even if the deepest position D of the resin filling space 30 is moved downward due to a manufacturing error of each member, the side surface of the liquid crystal display panel 10 (second substrate 12) and the opposing surface 221 that is in close contact or in contact with the panel are formed. The part which overlaps in the plane direction of can be ensured reliably. That is, at the time of assembly, it is possible to secure a portion for positioning the liquid crystal display panel 10 with respect to the panel support member, and it is possible to prevent the resin 40 injected into the resin filling space 30 from dropping below the liquid crystal display panel 10.
　また、図４（ａ）に示すように、パネル支持部材２０の側壁２２に形成された傾斜面２２２の上端縁Ｓ１と、液晶表示パネル１０の側面の上端縁Ｓ２とは略同じ高さである。換言すれば、パネル支持部材２０の側壁２２に形成された傾斜面２２２の上端縁Ｓ１の高さが、第一基板１１の表面と略同じ高さであるということである。 4A, the upper end edge S1 of the inclined surface 222 formed on the side wall 22 of the panel support member 20 and the upper end edge S2 of the side surface of the liquid crystal display panel 10 are substantially the same height. . In other words, the height of the upper end edge S1 of the inclined surface 222 formed on the side wall 22 of the panel support member 20 is substantially the same height as the surface of the first substrate 11.
　かかる構成によって、樹脂充填空間３０に注入される樹脂４０が溢れにくくなる。少なくとも液晶表示パネル１０の側面の上端縁Ｓ２の高さまで樹脂４０が充填可能な樹脂充填空間３０が形成される（側壁２２が低ければ樹脂４０が溢れ出てしまう）からである。 Such a configuration makes it difficult for the resin 40 injected into the resin filling space 30 to overflow. This is because the resin filling space 30 in which the resin 40 can be filled up to at least the height of the upper edge S2 of the side surface of the liquid crystal display panel 10 is formed (if the side wall 22 is low, the resin 40 overflows).
　なお、かかる構成は、パネル支持部材２０の側壁２２に形成された傾斜面２２２の上端縁Ｓ１を、液晶表示パネル１０の側面の上端縁Ｓ２よりも高くして、傾斜面２２２の形成によって生ずる上記空間をさらに大きくした構成を採用することを否定するものではない。 In this configuration, the upper end edge S1 of the inclined surface 222 formed on the side wall 22 of the panel support member 20 is made higher than the upper end edge S2 of the side surface of the liquid crystal display panel 10, and the above-described configuration is generated by the formation of the inclined surface 222. There is no denying the adoption of a larger space configuration.
　また、パネル支持部材２０に対する液晶表示パネル１０の組付けやすさを向上させるため、図５に示すような構成を採用してもよい。図５に示す構成は、パネル支持部材２０の側壁２２において、対向面２２１と傾斜面２２２の境目Ｂ２が曲面に形成されているものである。なお、本発明において「曲面」とは、必ずしも滑らかな曲面のみを指すものではない。対向面２２１と傾斜面２２２によって形成されるエッジが削り取られた（面取りされた）構成であればよい。このようにすれば、パネル支持部材２０に対し、液晶表示パネル１０を組付ける際、側壁２２のエッジによって液晶表示パネル１０が傷ついてしまうことが防止される。また、液晶表示パネル１０がパネル支持部材２０に組付けやすくなる。 Further, in order to improve the ease of assembling the liquid crystal display panel 10 to the panel support member 20, a configuration as shown in FIG. 5 may be adopted. In the configuration shown in FIG. 5, the boundary B <b> 2 between the facing surface 221 and the inclined surface 222 is formed in a curved surface on the side wall 22 of the panel support member 20. In the present invention, the “curved surface” does not necessarily indicate only a smooth curved surface. Any configuration may be used as long as the edge formed by the facing surface 221 and the inclined surface 222 is cut off (chamfered). This prevents the liquid crystal display panel 10 from being damaged by the edge of the side wall 22 when the liquid crystal display panel 10 is assembled to the panel support member 20. Further, the liquid crystal display panel 10 can be easily assembled to the panel support member 20.
　さらに、図６に示すように、側面２２において、傾斜面２２２と側壁２２の上端面の境目Ｂ３を曲面に形成してもよい。 Furthermore, as shown in FIG. 6, on the side surface 22, the boundary B3 between the inclined surface 222 and the upper end surface of the side wall 22 may be formed into a curved surface.
　このような形状を備える傾斜面２２２は、上述したように、パネル支持部材２０の側壁２２の一部に形成されている。詳しくは、側壁２２ａの内側の面、側壁２２ｂの内側の面の一部、および、側壁２２ｃの内側の面の一部に形成され、第二基板１２の張り出し部１２１の周囲には形成されていない。そのため、液晶表示装置１には、樹脂充填空間３０に注入された樹脂４０が、その他の空間に流れ込まないように遮断する遮断部３４が設けられている（図１～図３参照）。本実施形態における遮断部３４は、樹脂充填空間３０の長さ方向と直交する方向に立ち上がった壁である。つまり、かかる壁によって注入された樹脂４０の流れが遮断されるから、張り出し部１２１の周囲に樹脂４０は流れ込まない。なお、遮断部３４の形状は適宜変更可能である。例えば、樹脂４０が充填される樹脂充填空間３０とその他の空間との境界に、樹脂４０を通過させないような構造物を別途固定する、などといった方法を適用することもできる。 The inclined surface 222 having such a shape is formed on a part of the side wall 22 of the panel support member 20 as described above. Specifically, it is formed on the inner surface of the side wall 22a, a part of the inner surface of the side wall 22b, and a part of the inner surface of the side wall 22c, and is formed around the protruding portion 121 of the second substrate 12. Absent. Therefore, the liquid crystal display device 1 is provided with a blocking portion 34 that blocks the resin 40 injected into the resin filling space 30 from flowing into other spaces (see FIGS. 1 to 3). The blocking portion 34 in the present embodiment is a wall that rises in a direction orthogonal to the length direction of the resin filling space 30. That is, since the flow of the injected resin 40 is blocked by the wall, the resin 40 does not flow around the protruding portion 121. The shape of the blocking part 34 can be changed as appropriate. For example, a method of separately fixing a structure that does not allow the resin 40 to pass through may be applied to the boundary between the resin-filled space 30 filled with the resin 40 and other spaces.
　一方、本実施形態では、パネル支持部材２０の側壁２２に傾斜面２２２が形成されているため、その傾斜面２２２に沿う液晶表示パネル１０の側面から光が漏れてしまうおそれがある。具体的には、液晶表示パネル１０周縁に形成されるブラックマトリクス１２２より下方で露出したパネル側面（換言すれば第二基板の露出した側面）から光が漏れるおそれがある。したがって、樹脂充填空間３０に充填される樹脂４０は、図７に示すように、バックライト装置（光源１３）から液晶表示パネル１０に向けて出射された光を透過させない黒色であることが好ましい。 On the other hand, in this embodiment, since the inclined surface 222 is formed on the side wall 22 of the panel support member 20, light may leak from the side surface of the liquid crystal display panel 10 along the inclined surface 222. Specifically, light may leak from the panel side surface exposed below the black matrix 122 formed on the periphery of the liquid crystal display panel 10 (in other words, the exposed side surface of the second substrate). Therefore, as shown in FIG. 7, the resin 40 filled in the resin filling space 30 is preferably black that does not transmit light emitted from the backlight device (light source 13) toward the liquid crystal display panel 10.
　このように、充填空間に充填される樹脂４０が黒色であれば、その黒色の樹脂４０によって液晶表示パネル１０の側面から漏れようとする光（図７において模式的に点線の矢印で示した）が遮断されるため、光漏れの少ない表示品質に優れる液晶表示装置１とすることができる。加えて、充填される樹脂４０が有色であるため、樹脂４０が充填されているかどうかの確認が容易となる。なお、樹脂４０を黒色にする方法としては、使用する樹脂材料に黒色染料、黒色顔料（例えばカーボンブラック）などを含有させることが例示できる。 In this way, if the resin 40 filled in the filling space is black, light that leaks from the side surface of the liquid crystal display panel 10 by the black resin 40 (shown schematically by a dotted arrow in FIG. 7). Therefore, the liquid crystal display device 1 having excellent display quality with little light leakage can be obtained. In addition, since the resin 40 to be filled is colored, it is easy to check whether or not the resin 40 is filled. In addition, as a method of making the resin 40 black, it can be exemplified that the resin material to be used contains a black dye, a black pigment (for example, carbon black) or the like.
　なお、本実施形態にかかる液晶表示装置１において、このような黒色の樹脂を用いるという構成を想到するに至った理由は次の通りである。 In addition, in the liquid crystal display device 1 according to the present embodiment, the reason why the configuration of using such a black resin has been conceived is as follows.
　モバイル機器などで用いられる液晶表示装置では、装置の小型化、表示領域の拡大といった目的のため、表示領域の周囲に形成される額縁領域を小さくすることが求められている。しかし、額縁領域を小さくすると、図７に示すような斜めからの光が液晶表示パネル１０の側面（第二基板１２）から漏れるという新たな問題が発生する。単に、このような光を遮断する遮光部材を、パネル周縁部の厚さ方向に挟み込んで支持するような構造や、遮光部材を側面に貼り付け固定するような構造を採用したのでは、かえって額縁領域が大きくなってしまい、額縁領域を小さくしようとする目的に反する。 In liquid crystal display devices used in mobile devices and the like, it is required to reduce the frame area formed around the display area for the purpose of downsizing the apparatus and expanding the display area. However, if the frame region is made smaller, a new problem arises that light from an oblique direction as shown in FIG. 7 leaks from the side surface (second substrate 12) of the liquid crystal display panel 10. Simply adopting a structure that supports such a light blocking member that blocks the light in the thickness direction of the peripheral edge of the panel, or a structure that is fixed by sticking the light blocking member to the side, the frame The area becomes large, which is against the purpose of reducing the frame area.
　このような問題を解決するため、樹脂充填空間３０に充填される樹脂を黒色にし、液晶表示パネル１０の側面からの光漏れを防止した構成を想到するに至った。 In order to solve such a problem, the resin filled in the resin filling space 30 is made black, and a configuration has been devised in which light leakage from the side surface of the liquid crystal display panel 10 is prevented.
　以上、本発明の実施の形態について詳細に説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の改変が可能である。 The embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
　例えば、上記本発明の一実施形態として、液晶表示パネル１０を有する液晶表示装置１を用いて説明したが、その他の表示パネル（例えば有機ＥＬパネルなど）を有する表示装置に本発明の技術的思想を適用することも可能である。すなわち、平板状の表示パネルを有し、その表示パネルの側面を囲むように表示パネルをパネル支持部材に支持させることができる構成であれば、表示装置の種類はどのようなものであってもよい。 For example, although the liquid crystal display device 1 having the liquid crystal display panel 10 has been described as an embodiment of the present invention, the technical idea of the present invention is applied to a display device having another display panel (for example, an organic EL panel). It is also possible to apply. That is, any type of display device can be used as long as it has a flat display panel and can be supported by the panel support member so as to surround the side surface of the display panel. Good.
　また、上記本発明の一実施形態にかかる液晶表示装置１は、携帯電話機に用いられる液晶表示装置であることを説明したが、その他の機器（例えばテレビ受像機など）に用いられる液晶表示装置にも適用可能である。 Further, the liquid crystal display device 1 according to the embodiment of the present invention has been described as being a liquid crystal display device used in a mobile phone, but the liquid crystal display device used in other devices (for example, a television receiver) is used. Is also applicable.
　また、上記本発明の一実施形態にかかる液晶表示装置１が備えるパネル支持部材２０の構成は一例である。表示パネルの側面を囲む側壁を有するパネル支持部材であれば、その構成は適宜変更可能である。 The configuration of the panel support member 20 provided in the liquid crystal display device 1 according to the embodiment of the present invention is an example. If it is a panel support member which has the side wall surrounding the side surface of a display panel, the structure can be changed suitably.

Claims (7)

  1. 　画像を表示する表示面側に位置する第一基板と、
    この第一基板に貼り合わされ、前記表示面の反対側に位置する第二基板と、を有する表示パネルと、
    　この表示パネルの側面を囲む側壁を有し、前記表示パネルの表示面側が開口したパネル支持部材と、を備え、
    　前記パネル支持部材の側壁には、その内周の少なくとも一部に、前記表示パネルの側面と対向する対向面側から前記開口にかけて傾斜した傾斜面が形成され、
    　前記傾斜面と前記表示パネルの側面との間の空間に、前記第一基板と第二基板の境目を覆うように樹脂が充填されていることを特徴とする表示装置。     A first substrate located on the display surface side for displaying an image;
    A display panel having a second substrate bonded to the first substrate and positioned on the opposite side of the display surface;
    A panel support member having a side wall surrounding the side surface of the display panel, the display surface side of the display panel being open, and
    On the side wall of the panel support member, on at least a part of the inner periphery thereof, an inclined surface is formed that is inclined from the facing surface side facing the side surface of the display panel to the opening.
    A display device, wherein a space between the inclined surface and the side surface of the display panel is filled with a resin so as to cover a boundary between the first substrate and the second substrate.
  2. 　前記樹脂が充填される空間の最も深い位置と、前記表示パネルの側面における前記第二基板の厚み方向中央位置とが略一致していることを特徴とする請求項１に記載の表示装置。 2. The display device according to claim 1, wherein the deepest position of the space filled with the resin substantially coincides with the center position in the thickness direction of the second substrate on the side surface of the display panel.
  3. 　前記傾斜面の上端縁と、前記表示パネルの側面の上端縁とが略同じ高さであることを特徴とする請求項１または請求項２に記載の表示装置。 3. The display device according to claim 1, wherein an upper end edge of the inclined surface and an upper end edge of the side surface of the display panel have substantially the same height.
  4. 　前記対向面と前記傾斜面との境目が、曲面に形成されていることを特徴とする請求項１から請求項３のいずれか一項に記載の表示装置。 The display device according to any one of claims 1 to 3, wherein a boundary between the facing surface and the inclined surface is formed as a curved surface.
  5. 　前記傾斜面は、前記パネル支持部材の側壁の一部に形成されており、
    　前記パネル支持部材の側壁における、前記傾斜面が形成された箇所と、前記傾斜面が形成されていない箇所との境目には、前記樹脂が充填される空間とその他の空間とを遮断する遮断部が設けられていることを特徴とする請求項１から請求項４のいずれか一項に記載の表示装置。     The inclined surface is formed on a part of the side wall of the panel support member,
    A blocking portion that blocks the space filled with the resin and other spaces at the boundary between the portion where the inclined surface is formed and the portion where the inclined surface is not formed on the side wall of the panel support member. The display device according to claim 1, wherein the display device is provided.
  6. 　前記第二基板から前記第一基板の方向に光を照射するバックライト装置をさらに備え、
    　前記樹脂が黒色であることを特徴とする請求項１から請求項５のいずれか一項に記載の表示装置。     A backlight device for irradiating light from the second substrate in the direction of the first substrate;
    The display device according to claim 1, wherein the resin is black.
  7. 　請求項１から請求項６のいずれか一項において、前記表示パネルが、前記第一基板と前記第二基板との間に液晶が充填された液晶表示パネルであることを特徴とする液晶表示装置。 7. The liquid crystal display device according to claim 1, wherein the display panel is a liquid crystal display panel in which liquid crystal is filled between the first substrate and the second substrate. .
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