WO2011162019A1 - 表示パネルおよび表示装置 - Google Patents
表示パネルおよび表示装置 Download PDFInfo
- Publication number
- WO2011162019A1 WO2011162019A1 PCT/JP2011/059791 JP2011059791W WO2011162019A1 WO 2011162019 A1 WO2011162019 A1 WO 2011162019A1 JP 2011059791 W JP2011059791 W JP 2011059791W WO 2011162019 A1 WO2011162019 A1 WO 2011162019A1
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- WIPO (PCT)
- Prior art keywords
- display panel
- edge
- liquid crystal
- crystal display
- tape
- Prior art date
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- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
- G07F19/20—Automatic teller machines [ATMs]
- G07F19/201—Accessories of ATMs
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- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- 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
-
- 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
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- 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
- G02F1/13332—Front frames
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- 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
- G02F1/133325—Assembling processes
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- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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- 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/46—Fixing elements
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- 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
- G02F2202/00—Materials and properties
- G02F2202/28—Adhesive materials or arrangements
Definitions
- the present invention relates to a display panel and a display device that can reduce light leakage and foreign matter contamination.
- liquid crystal display devices In the technical field of liquid crystal display devices, in order to improve visibility and sealing performance, a configuration in which a light shielding tape, a double-sided adhesive tape, or the like is affixed inside the outer edge of the liquid crystal display panel is employed.
- liquid crystal display devices called IA (Industrial Appliance) models used in industrial equipment such as ATMs are required to be adaptable and durable to the usage environment, so that visibility and sealability are maintained over a long period of time. There is a need.
- FIG. 1 is a diagram showing an example of a cross-sectional view of a liquid crystal display device 91 in which a liquid crystal display panel 94 is incorporated in a frame.
- the liquid crystal display device 91 holds a liquid crystal display panel 94 in a case 99 and a chassis 93 constituting a frame.
- a light emitting member 95 including a diffusion sheet and a backlight is installed below the liquid crystal display panel 94.
- the liquid crystal display panel 94 includes a polarizing plate 97 on the liquid crystal panel 96 and a polarizing plate 98 below the liquid crystal panel 96.
- the outer edge portion 97 a of the polarizing plate 97 is located inside the liquid crystal panel 96 with respect to the outer edge portion 96 a of the liquid crystal panel 96.
- a light shielding tape 92 is attached to the outside of the outer edge portion 97 a of the polarizing plate 97.
- a PET (polyethylene terephthalate) tape can be used as the light shielding tape 92.
- the backlight 924 from the light emitting member 95 may pass through the end of the liquid crystal panel 96, be reflected by the wall surface 93 a of the chassis 93, and enter the side surface 92 a of the light shielding tape 92.
- the light shielding tape 92 is in close contact with the case 99 and the liquid crystal panel 96, light leakage hardly occurs from the upper surface or the lower surface of the light shielding tape 92.
- a gap may occur at the joint between the ends of the light shielding tape pieces.
- light leakage may occur due to the backlight light 924 incident on the gap.
- FIG. 2 is an example of an X-X ′ sectional view of the liquid crystal display device 91 of FIG. FIG. 2 shows an example of a state in which the light shielding tape piece 921 and the light shielding tape piece 922 are attached.
- a gap 923 may be formed between the light shielding tape piece 921 and the light shielding tape piece 922 inside the outer edge of the liquid crystal panel 96.
- the gap 923 is generated, the backlight light 924 incident from the outer line segment (broken line portion) 923a of the gap 923 passes through the inner line segment (broken line portion) 923b, whereby the polarized light constituting the liquid crystal display panel 94 is formed. Light leaks to the upper surface side of the plate 97.
- the present invention has been made in view of the above problems, and an object thereof is to provide a display panel and a display device that can reduce light leakage and contamination.
- a display panel disclosed below is a display panel in which a tape member is affixed to the inside of an outer edge, and a first end of the tape member has a first end. An edge is formed, and a second end edge is formed at the second end of the tape member so as to face the first end edge, and the first end edge and the first end The two end edges are shaped to fit at least partially.
- the display panel of the present invention has an effect that the first end edge and the second end edge of the tape member are fitted to each other, so that light leakage and foreign matter mixing can be reduced. Play.
- FIG. 1 is a diagram illustrating an example of a cross-sectional view of a liquid crystal display device in which a liquid crystal display panel is incorporated in a frame.
- FIG. 2 is a diagram showing an example of a cross-sectional view taken along the line X-X ′ in the liquid crystal display device 1 of FIG.
- FIG. 3 is a diagram illustrating an example of a cross-sectional view of the liquid crystal display device 1 in which the liquid crystal display panel 4 is incorporated in a frame.
- FIG. 4 is a diagram illustrating an example of a state in which the light shielding tape piece 21 and the light shielding tape piece 22 are attached in the liquid crystal display device 1.
- FIG. 1 is a diagram illustrating an example of a cross-sectional view of a liquid crystal display device in which a liquid crystal display panel is incorporated in a frame.
- FIG. 2 is a diagram showing an example of a cross-sectional view taken along the line X-X ′ in the liquid crystal display device 1 of FIG.
- FIG. 5A is a diagram illustrating an example of a modified example of a state in which the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1 are attached.
- FIG. 5B is a diagram illustrating an example of a modification of the state where the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1 are attached.
- FIG. 5C is a diagram illustrating an example of another modified example of a state where the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1 are attached.
- FIG. 5D is a diagram illustrating an example of another modified example of the attachment state of the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1.
- FIG. 5A is a diagram illustrating an example of a modified example of a state in which the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1 are attached.
- FIG. 5B is a diagram illustrating an example of
- FIG. 6A is a diagram illustrating an example of a schematic diagram illustrating a method for manufacturing the liquid crystal display device 1.
- FIG. 6B is a diagram illustrating an example of a schematic diagram for explaining a method of manufacturing the liquid crystal display device 1.
- FIG. 6C is a diagram illustrating an example of a schematic diagram illustrating a method for manufacturing the liquid crystal display device 1.
- FIG. 7A is a diagram illustrating an example of a cross-sectional view of the liquid crystal display device 1 in which the liquid crystal display panel 4 is incorporated in a frame.
- FIG. 7B is a diagram illustrating an example of a YY ′ cross-sectional view of the liquid crystal display device 1 of FIG. 7A.
- FIG. 8A is a diagram illustrating an example of a modified example of a state where a light shielding tape or a double-sided adhesive tape is attached.
- FIG. 8B is a diagram illustrating an example of a modified example of a state where a light shielding tape or a double-sided adhesive tape is attached.
- FIG. 8C is a diagram illustrating an example of a modified example of a state where a light shielding tape or a double-sided adhesive tape is attached.
- Drawing 8D is a figure showing an example of a modification of a pasting state of a shading tape or a double-sided adhesive tape.
- FIG. 8E is a diagram illustrating an example of a modified example of a state where a light shielding tape or a double-sided adhesive tape is attached.
- FIG. 9A is a diagram illustrating an example of a modified example of a state where a light shielding tape or a double-sided adhesive tape is attached.
- FIG. 9B is a diagram illustrating an example of a modified example of a state where a light shielding tape or a double-sided adhesive tape is attached.
- a display panel is a display panel in which a tape member is attached to the inside of an outer edge, and the first end of the tape member has a first end edge.
- the second end of the tape member is formed with a second end so as to face the first end, and the first end and the second end are formed.
- the end edge has a shape that fits at least partially. Thereby, the light leakage from the outer side of a display panel and foreign material mixing can be reduced.
- the first end edge has a convex portion with a part projecting outward, and the second end edge has a part notched inward. It is preferable to have a recess and to have a shape in which the protrusion and the recess fit. In this case, light leakage from the outside of the display panel and mixing of foreign matters can be effectively reduced.
- the convex portion of the first end edge and the concave portion of the second end edge are fitted in the entire first end edge or the entire second end edge. It is preferable that In this case, light leakage from the outside of the display panel and mixing of foreign matters can be effectively reduced.
- a gap formed between the first edge and the second edge is a gap that does not allow light incident from the outside of the display panel to go straight to the inside of the display panel.
- the first end and the second end may be attached. In this case, even if a gap is generated, light leakage from the outside of the display panel and contamination with foreign matter can be reduced.
- the display panel may have a quadrangular shape, and the first end and the second end may be pasted at corners of the outer edge of the display panel.
- the first end and the second end may be pasted at corners of the outer edge of the display panel.
- the tape member may be a double-sided adhesive tape, and the display panel may be bonded to the chassis with the double-sided adhesive tape. In this case, foreign matter can be prevented from being mixed between the liquid crystal display panel and the chassis.
- the display panel can be used for a display device.
- FIG. 3 is a diagram illustrating an example of a cross-sectional view of the liquid crystal display device 1 in which the liquid crystal display panel 4 is incorporated in a frame in the present embodiment.
- the liquid crystal display device 1 holds a liquid crystal display panel 4 in a case 9 and a chassis 3 constituting a frame.
- a light emitting member 5 including a diffusion sheet and a backlight is installed below the liquid crystal display panel 4.
- the liquid crystal display panel 4 includes a liquid crystal panel 6, a polarizing plate 7 and a polarizing plate 8.
- the liquid crystal display panel 4 includes a polarizing plate 7 on the liquid crystal panel 6 and a polarizing plate 8 below the liquid crystal panel 6.
- the outer edge portion 7 a of the polarizing plate 7 is located on the inner side of the liquid crystal panel 6 than the outer edge portion 6 a of the liquid crystal panel 6.
- the light shielding tape 2 is stuck on the outer side of the outer edge portion 7 a of the polarizing plate 7.
- a PET (polyethylene terephthalate) tape having a thickness of about 150 ⁇ m is used as the light shielding tape 2.
- FIG. 4 is a diagram illustrating an example of a state in which the light shielding tape piece 21 and the light shielding tape piece 22 are attached in the liquid crystal display device 1 according to the present embodiment. That is, FIG. 4 is a diagram schematically showing only the relationship between the light shielding tape piece 21 and the light shielding tape piece 22 in the X-X ′ sectional view of FIG. 3.
- the end edge 21a which is the edge of the end portion of the light shielding tape piece 21, has a staircase shape. That is, the shape of the edge 21a is a non-linear shape, and the convex portion 31 is formed in plan view (in the direction perpendicular to the paper surface).
- an end edge 22a which is an edge of the end portion of the light shielding tape piece 22 is formed so as to face the above-described end edge 21a, and has a stepped shape so as to be fitted to the end edge 21a. That is, the shape of the edge 22a is a non-linear shape, and the recess 32 is formed in a plan view (in the direction perpendicular to the paper surface). That is, the convex part 31 of the edge 21a and the concave part 32 of the edge 22a have a shape that fits each other.
- the light shielding tape piece 21 and the light shielding tape piece 22 are pasted so that the end edge 21a and the end edge 22a are fitted to each other without leaving a gap.
- a gap may be generated between the end edge 21a and the end edge 22a.
- a gap 33, a gap 34, and a gap 35 are generated between the edge 21a and the edge 22a.
- the gap 33, the gap 34, and the gap 35 are approximately the same size.
- the light shielding tape piece 21 and the light shielding tape piece 22 are affixed so that the convex part 31 and the concave part 32 fit each other, so that the wall surfaces 3b and 3a of the chassis 3 (FIG. 3). Even when the backlight light 24 reflected by the light enters from the outside of the gap 33 on the side surface 2 a of the light shielding tape 2, it is blocked by the wall surface 22 b of the edge 22 a and hardly passes through to the upper surface side of the liquid crystal display panel 4. be able to.
- the edge 21 a and the edge 22 a have such a gap that the backlight 24 that has passed through the gap 33 and entered from the outside of the liquid crystal display panel 4 does not go straight to the gap 34 inside the liquid crystal display panel 4. It only needs to be attached.
- the edges of the plurality of light shielding tape pieces are fitted to each other, light leakage from the outside of the liquid crystal display panel 4 can be prevented. At the same time, contamination with foreign matter can be reduced. Specifically, it is possible to easily prevent foreign matter from entering the gap between the lower surface of the liquid crystal display panel 4 and the light emitting member 5 through the gap 34 and the gap 33 from the upper surface of the liquid crystal display panel 4.
- FIG. 5A and FIG. 5B are diagrams showing an example of a modification of the state where the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1 shown in FIG.
- the convex portion 31 of the end edge 21a and the concave portion 32 of the end edge 22a are fitted to each other with a certain gap (gap 33, gap 34, and gap 35).
- the shape where the convex part 31 of the edge 21a and the recessed part 32 of the edge 22a fit moderately may be sufficient.
- a gap 36 larger than the gap 33 or the gap 34 is provided to fit. Even in this case, if the backlight light 24 does not travel straight into the gap 34, light leakage and foreign matter contamination can be reduced.
- the convex portion 31 and the concave portion 32 may have a concave-convex shape as shown in FIG. 5B. That is, the convex portion 31 may be provided near the center of the edge 21a, and the concave portion 32 of the edge 22a may be provided at a position facing the convex portion 31. In the case of FIG. 5B, since it is necessary to repeat the reflection in order that the backlight light 24 passes through the gap 34, the right angle portion 41 exists in the gap. It can reduce more effectively.
- each shape of the convex part 31 and the recessed part 32 will not be limited to said example, if it is a shape which mutually fits.
- FIGS. 5C and 5D are diagrams illustrating an example of another modified example of the attachment state of the light shielding tape piece 21 and the light shielding tape piece 22 of the liquid crystal display device 1 illustrated in FIG. 4.
- the convex portion 31 and the concave portion 32 may be curved.
- the backlight light 24 incident from the gap 33 is absorbed by the wall surface of the recess 32. In this case, if the backlight light 24 does not go straight to the gap 34, light leakage can be reduced.
- the convex portion 31 and the concave portion 32 may have a concave-convex shape having a curved shape in part as shown in FIG. 5D. That is, the convex part 31 may be provided by making a part of the edge 21 a into a curved shape, and the curved concave part 32 may be provided at the position of the edge 22 a corresponding to the convex part 31.
- the backlight 24 in order for the backlight 24 to pass through the gap 34, it is necessary to repeat reflection.
- the gap is formed in a curved shape, the backlight light 24 that is repeatedly reflected is absorbed by the wall surface of the convex portion 31 or the concave portion 32. Thereby, the progress of the backlight light 24 can be prevented and light leakage can be effectively reduced.
- each shape of the convex part 31 and the recessed part 32 or the edge 21a and the edge 22a will not be limited to said example, if it is a shape which mutually fits.
- FIG. 6A, 6B, and 6C are examples of schematic views illustrating a method for manufacturing the liquid crystal display device 1 shown in FIG.
- a light shielding tape piece 21 is attached to a part of the inner edge of the liquid crystal display panel 4 (left and right sides in FIG. 6A).
- the edge 21a and the edge 22a are affixed to the liquid crystal display panel 4 in a state of facing each other.
- the pasting method may be performed manually or by a dedicated machine.
- the edge 21a and the edge 22a need to be pasted so as not to overlap on the same plane. This is because the overlapping portion interferes with the case. Moreover, it is necessary to affix so that the clearance gap between the end edge 21a and the end edge 22a may be settled in a predetermined range. This is because when the gap becomes large, light leakage due to the backlight from the outer edge of the liquid crystal display panel 4 occurs.
- the liquid crystal display is made so that the upper portions of the annular light shielding tape 21 and the light shielding tape 22 and the frame-shaped case 2 are in close contact with each other.
- the panel 4 is assembled in the case 2 to produce the liquid crystal display device 1.
- the liquid crystal display device 1 can be manufactured.
- FIG. 7A is a diagram showing an example of a cross-sectional view of the liquid crystal display device 1 in which the liquid crystal display panel 4 is incorporated in a frame.
- the liquid crystal display device 1 holds the liquid crystal display panel 4 in the case 9 and the chassis 3 constituting the frame, as in FIG.
- a light emitting member 5 including a diffusion sheet and a backlight is installed below the liquid crystal display panel 4.
- a double-sided adhesive tape 11 is stuck between the lower surface 6 b of the liquid crystal display panel 4 and the mounting surface 3 b of the chassis 3.
- FIG. 7B is an example of a Y-Y ′ cross-sectional view of the liquid crystal display device 1 of FIG. 7A.
- FIG. 7B shows a case where a gap 44 is generated between the convex portion 41 formed on the edge 111a of the double-sided adhesive tape piece 111 and the concave portion 42 formed on the edge 112a of the double-sided adhesive tape piece 112. Show.
- the double-sided adhesive tape 11 formed using a light-shielding material it is possible to prevent light leakage from the light emitting member 5 to the upper surface of the liquid crystal display panel 4 at the same time that foreign matter is mixed.
- FIG. 8A to FIG. 8E are examples of diagrams showing modifications of the state where the light-shielding tape or the double-sided adhesive tape of the above embodiment is attached.
- a trough-shaped concave portion 211a is provided on the end edge 21a of the tape member 21, and a mountain-shaped convex portion 221a is provided on the end edge 22a of the tape member 22 so that the end edge 21a and the end edge 22a are fitted.
- FIG. 8A a trough-shaped concave portion 211a is provided on the end edge 21a of the tape member 21, and a mountain-shaped convex portion 221a is provided on the end edge 22a of the tape member 22 so that the end edge 21a and the end edge 22a are fitted.
- valley-shaped concave portions 211b and 212b are provided on the edge 21b of the tape member 21, and mountain-shaped convex portions 221b and 222b are provided on the edge 22b of the tape member 22, and the edge 21a and the edge 22a It is a figure which shows an example at the time of having fitted.
- a curved concave portion 211c is provided on the edge 21c of the tape member 21, and a curved convex portion 221c is provided on the edge 22c of the tape member 22 so that the edge 21a and the edge 22a are fitted together.
- FIG. 8C a curved concave portion 211c is provided on the edge 21c of the tape member 21, and a curved convex portion 221c is provided on the edge 22c of the tape member 22 so that the edge 21a and the edge 22a are fitted together.
- a curved concave portion 211d is provided on the edge 21d of the tape member 21, and a curved convex portion 221d is provided on the edge 22d of the tape member 22 so that the edge 21a and the edge 22a are fitted together.
- FIG. 8D a curved concave portion 211d is provided on the edge 21d of the tape member 21, and a curved convex portion 221d is provided on the edge 22d of the tape member 22 so that the edge 21a and the edge 22a are fitted together.
- FIG. 8E is an example in which the fitting between the respective edges of the tape member is applied to a connecting portion of a plurality of tape pieces that are linearly affixed inside the outer edge of the liquid crystal display panel 4.
- the end edge 21e of the tape member 21 and the end edge 22e of the tape member 22 are fitted in the linear portion of the tape piece.
- the fitting state shown in FIG. 5A to FIG. 5D or FIG. 8A to FIG. 8D may be applied to a connecting portion of a plurality of tape pieces that are linearly attached as shown in FIG. 8E.
- FIG. 9A and FIG. 9B are diagrams showing an example of a further modified example of a state where the light shielding tape or the double-sided adhesive tape of the above embodiment is attached.
- the end edge 21f of the tape member 21 is formed into a linear shape by conventional slit processing, and only the end edge 22f of the tape member 22 is formed into a convex shape to fit each tape member.
- the end edge 21g of the tape member 21 is formed into a linear shape by conventional slit processing, and only the end edge 22g of the tape member 22 is formed into a concave shape to fit each tape member.
- only the end of one tape member (for example, tape member 22) may be processed. For this reason, the processing cost etc. of a tape member can be reduced.
- the present invention is useful for a display panel and a display device provided with a tape member.
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Abstract
Description
[1-1.液晶表示装置の構成]
図3は、本実施形態において、液晶表示パネル4をフレーム内に組み込んだ液晶表示装置1の断面図の一例を示す図である。液晶表示装置1は、フレームを構成するケース9およびシャーシ3内に液晶表示パネル4を保持している。液晶表示パネル4の下側には、拡散シートおよびバックライト等を含む発光部材5が設置される。
図5Aおよび図5Bは、図4に示した液晶表示装置1の遮光テープ片21および遮光テープ片22の貼設状態についての変形例の一例を示す図である。図4においては、端縁21aの凸部31と、端縁22aの凹部32とが、一定の隙間(隙間33、隙間34および隙間35)をもって相互に嵌め合う形状とした。しかし、図5Aに示すように、端縁21aの凸部31と、端縁22aの凹部32とが、緩やかに嵌め合う形状であってもよい。例えば、図5Aにおいては、隙間33または隙間34よりも大きい隙間36を空けて嵌め合う構造をなしている。この場合あっても、バックライト光24が、隙間34へ直進しなければ、光漏れおよび異物混入を低減することができる。
図5Cおよび図5Dは、図4に示した液晶表示装置1の遮光テープ片21および遮光テープ片22の貼設状態についての他の変形例の一例を示す図である。
図6A、図6Bおよび図6Cは、図3に示した液晶表示装置1の製造方法を説明する概略図の一例である。まず、図6Aに示すように、液晶表示パネル4の外縁の内側の一部(図6Aでは左右側)に遮光テープ片21を貼り付ける。
[2-1.液晶表示装置の構成]
上記実施形態においては、液晶表示パネル4とシャーシ3(図3)との間に生じる光漏れまたは異物混入を防止することを目的として、遮光テープ2を貼り付ける例について説明した。さらに、図3において、液晶表示パネル4の下面6bとシャーシ3の取り付け面3bとの隙間10からの異物(例えば、塵や埃等。)の混入を防ぐ目的で、液晶表示パネル4とシャーシ3との間に両面接着テープを貼り付ける構成としてもよい。
[3-1.液晶表示装置の構成]
図8A~図8Eは、上記実施形態の遮光テープまたは両面接着テープの貼設状態の変形例を示す図の一例である。
2 遮光テープ
3 シャーシ
4 液晶表示パネル
5 発光部材
6 液晶パネル
7 偏光板
8 偏光板
9 ケース
Claims (7)
- 外縁の内側にテープ部材が貼設された表示パネルであって、
前記テープ部材の第1の端部には、第1の端縁が形成されており、前記テープ部材の第2の端部には、前記第1の端縁に対向するように第2の端縁が形成されており、
前記第1の端縁と前記第2の端縁とが、少なくとも一部において嵌合する形状をなしている、表示パネル。 - 前記第1の端縁は、一部が外側に張り出した形状の凸部を有し、前記第2の端縁は、一部が内側に切り欠かれた形状の凹部を有し、前記凸部と前記凹部とが嵌合する形状をなしている、請求項1に記載の表示パネル。
- 前記第1の端縁の凸部と、前記第2の端縁の凹部とが、前記第1の端縁全体または前記第2の端縁全体において嵌合する形状をなしている、請求項2に記載の表示パネル。
- 前記第1の端縁と前記第2の端縁との間に生じる隙間が、前記表示パネル外側から入射した光が前記表示パネル内側へ直進しない程度の隙間となるように、前記第1の端部と前記第2の端部とが貼設されている、請求項1~3のいずれか一項に記載の表示パネル。
- 前記表示パネルは、四角形状であり、
前記第1の端部および前記第2の端部は、前記表示パネルの外縁部の角部において貼設される、請求項1~4のいずれか一項に記載の表示パネル。 - 前記テープ部材は、両面接着テープであり、
前記表示パネルは、前記両面接着テープによりシャーシに接着される、請求項1~5のいずれか一項に記載の表示パネル。 - 請求項1~6のいずれか一項に記載の表示パネルを備えた表示装置。
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EP11797907.0A EP2568465A4 (en) | 2010-06-22 | 2011-04-21 | DISPLAY PANEL AND DISPLAY DEVICE |
US13/700,449 US20130070180A1 (en) | 2010-06-22 | 2011-04-21 | Display panel and display device |
CN201180026648.0A CN102918576B (zh) | 2010-06-22 | 2011-04-21 | 显示面板和显示装置 |
JP2012521363A JP5422051B2 (ja) | 2010-06-22 | 2011-04-21 | 表示パネルおよび表示装置 |
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US (1) | US20130070180A1 (ja) |
EP (1) | EP2568465A4 (ja) |
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JP2013164466A (ja) * | 2012-02-09 | 2013-08-22 | Mitsubishi Electric Corp | 液晶表示装置 |
JP2014126719A (ja) * | 2012-12-27 | 2014-07-07 | Canon Inc | 表示装置 |
JP2014211566A (ja) * | 2013-04-19 | 2014-11-13 | 三菱電機株式会社 | 表示装置および電子装置 |
JP2016001232A (ja) * | 2014-06-11 | 2016-01-07 | 株式会社ジャパンディスプレイ | 液晶表示装置 |
WO2017163343A1 (ja) * | 2016-03-23 | 2017-09-28 | 堺ディスプレイプロダクト株式会社 | 表示装置 |
JP2019117327A (ja) * | 2017-12-27 | 2019-07-18 | 株式会社Jvcケンウッド | 表示装置 |
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US20130070180A1 (en) | 2013-03-21 |
EP2568465A1 (en) | 2013-03-13 |
JPWO2011162019A1 (ja) | 2013-08-19 |
JP5422051B2 (ja) | 2014-02-19 |
CN102918576A (zh) | 2013-02-06 |
EP2568465A4 (en) | 2014-07-23 |
CN102918576B (zh) | 2015-02-25 |
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