Display device
By polishing the opposite end faces of the display panel to a Ra of no more than 0.5μm, the contact problem caused by the excessively narrow gap between the display panels is solved, thereby improving the reliability and display quality of the display device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
- Filing Date
- 2023-12-01
- Publication Date
- 2026-07-21
Smart Images
Figure CN118262629B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to display devices. Background Technology
[0002] Some automotive display devices employ a design where multiple display panels are mounted on the dashboard as a central information display (CID) or instrument panel. In recent years, to display more service information, these displays have been required to be larger or conform to the shape of the dashboard. Particularly for designs with parallelly arranged display panels, there is a need to develop display devices with narrow bezels (non-display areas) between the panels. Summary of the Invention
[0003] In a tiled display device in which multiple display panels are arranged side by side and bonded to a cover panel, the gaps between the display panels must be as narrow as possible so that the joints between the display panels, known as seams, are not noticeable.
[0004] However, if the gaps between display panels are too narrow, thermal shrinkage or vibration of the cover panel may cause the end faces of adjacent display panels to come into contact; this could result in broken glass, or the display panels themselves might crack, leading to display malfunction. Therefore, a technology is needed to effectively prevent problems caused by contact between adjacent display panels in tiled display devices.
[0005] One aspect of the present invention is a display device, comprising: a support substrate; a first display panel bonded to a first surface of the support substrate via a first adhesive region; and a second display panel bonded to the first surface of the support substrate via a second adhesive region. The first display panel includes a first glass substrate. The second display panel includes a second glass substrate. A first end face of the first glass substrate and a second end face of the second glass substrate face each other. The first end face and the second end face have a surface roughness Ra not exceeding 0.5 μm.
[0006] One aspect of the present invention reduces the likelihood of problems occurring in display devices in which multiple display panels are bonded to a support substrate.
[0007] It should be understood that the above general description and the following detailed description are exemplary and explanatory, and not intended to limit the invention. Attached Figure Description
[0008] Figure 1 This is an exploded perspective view schematically illustrating a configuration example of a portion of a liquid crystal display device according to one embodiment of this specification.
[0009] Figure 2The illustration schematically shows a configuration of a portion of a liquid crystal display device in the prior art.
[0010] Figure 3 This is a cross-sectional view schematically showing a portion of the configuration of a liquid crystal display device 1 according to one embodiment of this specification.
[0011] Figure 4 The configuration of the end region of the substrate assembly of the liquid crystal panel is schematically shown.
[0012] Figure 5 The inventor's measurement results were provided.
[0013] Figure 6 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0014] Figure 7 The configuration of the end region of the substrate assembly of the liquid crystal panel is schematically shown.
[0015] Figure 8 It is a perspective view schematically showing the configuration of a portion of the substrate assembly.
[0016] Figure 9 It is a schematic cross-sectional view showing the movement of the liquid crystal panel as the current panel retracts.
[0017] Figure 10 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0018] Figure 11 The configuration of the end region of the substrate assembly of the liquid crystal panel is schematically shown.
[0019] Figure 12 It is a perspective view schematically showing the configuration of a portion of the substrate assembly.
[0020] Figure 13 It is a schematic cross-sectional view showing the movement of the liquid crystal panel as the current panel retracts.
[0021] Figure 14 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0022] Figure 15 The configuration of the end region of the substrate assembly of the liquid crystal panel is schematically shown.
[0023] Figure 16 It is a schematic cross-sectional view showing the movement of the liquid crystal panel as the current panel retracts.
[0024] Figure 17This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0025] Figure 18 It is a schematic cross-sectional view showing the movement of the liquid crystal panel as the current panel retracts.
[0026] Figure 19 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0027] Figure 20 The configuration of the end region of the substrate assembly of the liquid crystal panel is schematically shown.
[0028] Figure 21 It is a schematic cross-sectional view showing the movement of the liquid crystal panel as the current panel retracts.
[0029] Figure 22 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0030] Figure 23 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification.
[0031] Figure 24 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device according to another embodiment of this specification. Detailed Implementation
[0032] In the following description, embodiments of the invention will be illustrated with reference to the accompanying drawings. It should be noted that these embodiments are merely examples for implementing the invention and are not intended to limit the scope of the invention.
[0033] One embodiment of this specification discloses a tiled display device in which multiple display panels are arranged side-by-side and bonded to a support substrate. The display panels may be liquid crystal display panels, organic light-emitting diode (OLED) display panels, or micro-LED display panels. The multiple display panels are bonded to the same main surface (first surface) of the support substrate. The bonding surface of electroluminescent display panels, such as OLED and micro-LED display panels, can be either the front or back side of the display panel. For display panels requiring backlighting, such as liquid crystal display panels, the bonding surface is their front side.
[0034] In a configuration where multiple display panels are arranged side-by-side and bonded to a support substrate, each gap between the display panels must be as narrow as possible to make the joints between the display panels, known as seams, inconspicuous. However, if the gaps between the display panels are too narrow, thermal shrinkage or vibration of the cover panel may cause the end faces of adjacent display panels to come into contact; this may result in broken glass, or the display panels themselves may crack, leading to display malfunction. Broken glass may migrate to the front or back of the display panels, causing display failure.
[0035] One embodiment of this specification polishes the opposing end faces of adjacent display panels (first display panel and second display panel) to a near-mirror finish or a smoother finish than a near-mirror finish. This process reduces the likelihood of glass breakage or display panel breakage due to contact between adjacent display panels. In one embodiment of this specification, the surface roughness Ra of the opposing end faces is no greater than 0.5 μm. Furthermore, the surface roughness Ra of the end faces may be no greater than 0.2 μm. This configuration effectively reduces the likelihood of glass breakage or display panel breakage due to contact between adjacent display panels.
[0036] Figure 1 This is an exploded perspective view schematically illustrating a configuration example of a portion of a liquid crystal display device according to one embodiment of this specification. In this specification, the side of the liquid crystal display device from which the user intends to view the image is referred to as the front side, while the opposite side is referred to as the rear side or back side.
[0037] The liquid crystal display device 1 includes a front panel 11 with a support substrate that is transmissive to visible light and a plurality of liquid crystal display panels arranged in parallel behind the front panel 11. The liquid crystal display panels can also be simply referred to as liquid crystal panels. As an example, Figure 1 It includes three liquid crystal panels 31, 32, and 33. The liquid crystal display device 1 also includes one or more backlight units (not shown) arranged behind the liquid crystal panels 31, 32, and 33.
[0038] In the following description, a liquid crystal display panel is used as an example of a display panel. The features of this invention can be applied to display devices that include other types of display panels, such as OLED display panels and micro-LED display panels. OLED display panels or micro-LEDs are not limited to any particular type.
[0039] The main surface of the front panel 11 is flat and has a rectangular shape in plan view (when viewed in a direction perpendicular to the main surface). The main surface of the front panel 11 may be curved instead of flat. The shape of the front panel 11 is not limited to rectangle; the front panel 11 may have any shape suitable for installation depending on the design. The front panel 11 may be colorless and transparent or colored and transparent; it may be made of glass or resin. The front panel 11 may, for example, have touch panel functionality. In addition, depending on the usage environment or purpose, an anti-reflective coating or film and / or shatterproof film may be applied.
[0040] In this configuration example, three liquid crystal panels 31, 32, and 33 are arranged on the rear main surface of the front panel 11. When viewed from the front, the front panel 11 covers the entire liquid crystal panels 31, 32, and 33. The outlines of the liquid crystal panels 31, 32, and 33 are located inside the outline of the front panel 11. The number and layout of the liquid crystal panels arranged on the front panel 11 are not limited to this example; any layout suitable for installation can be adopted depending on the appearance and implementation design of the device including the display device.
[0041] Liquid crystal panels 31, 32, and 33 have flat main surfaces. Images are displayed on the front main surface. In another configuration example, liquid crystal panels 31, 32, and 33 may have curved main surfaces. Although Figure 1 The LCD panels 31, 32 and 33 in the configuration example have rectangular shapes, but their shapes are not limited to rectangles, but can be other polygons or include curved contours.
[0042] Each of the liquid crystal panels 31, 32, and 33 includes a resin or glass substrate facing each other and liquid crystal material therebetween. The liquid crystal panels 31, 32, and 33 can have any configuration, for example, vertical electric field type or horizontal electric field type, and color type or monochrome type.
[0043] The front main surfaces of LCD panels 31, 32, and 33 are bonded to the rear main surface of front panel 11 via adhesive areas 21, 22, and 23. Adhesive areas 21, 22, and 23 may be made of transparent resin and are in direct contact with front panel 11 and LCD panels 31, 32, and 33. Adhesive areas 21, 22, and 23 may be double-sided tape, or silicone or acrylic resin cured by UV light, heat, or moisture.
[0044] exist Figure 1In the configuration example, the outlines of adhesive regions 21, 22, and 23 are located inside the outlines of the front main surfaces of liquid crystal panels 31, 32, and 33. In one example, adhesive regions 21, 22, and 23 cover the entire display area of liquid crystal panels 31, 32, and 33. There is a gap between adjacent adhesive regions 21 and 22, and another gap between adjacent adhesive regions 21 and 23. Adhesive regions 21, 22, and 23 can be part of a single adhesive region.
[0045] Figure 2 The diagram schematically illustrates a portion of the configuration of a liquid crystal display device 2 in the prior art. The liquid crystal display device 2 includes a front panel 51 and liquid crystal panels 71 and 72 arranged adjacent to each other behind the front panel 51. Figure 2 The top side is the front. LCD panels 71 and 72 are color LCD panels.
[0046] The liquid crystal panel 71 includes a thin-film transistor (TFT) substrate 111 and a color filter (CF) substrate 112. The TFT substrate 111 includes a TFT array fabricated on a glass substrate, and the color filter substrate 112 includes a color filter fabricated on a glass substrate. The opposing surfaces of the TFT substrate 111 and the CF substrate 112 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant. Polarizing plates 113 and 114 are respectively disposed on the back side of the TFT substrate 111 and the front side of the CF substrate 112. The back side of the front panel 51 and the front side of the polarizing plate 114 are bonded together with an optically clear adhesive (OCA) film 61.
[0047] The liquid crystal panel 72 includes a TFT substrate 121 and a CF substrate 122. The opposing surfaces of the TFT substrate 121 and the CF substrate 122 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant. Polarizing plates 123 and 124 are respectively disposed on the back side of the TFT substrate 121 and the front side of the CF substrate 122. The back side of the front panel 51 and the front side of the polarizing plate 124 are bonded together with an OCA film 62.
[0048] The end face (side surface) 116 of liquid crystal panel 71 and the end face (side surface) 126 of liquid crystal panel 72 are opposite to each other. End faces 116 and 126 are far apart and do not contact each other, and a gap G0 exists between end faces 116 and 126. This gap G0 provides a wide non-display area, which compromises display quality. End faces 116 and 126 are rough surfaces including microcracks, bumps, and depressions. Liquid crystal panels 71 and 72 are cut from the motherboard by scribing and cracking. End faces 116 and 126 are unpolished fractured surfaces.
[0049] When the front panel 51 of the liquid crystal display device 2 shrinks or deforms, the end face 116 of the liquid crystal panel 71 and the end face 126 of the liquid crystal panel 72 may come into contact with each other. Since the end faces 116 and 126 are rough surfaces, their contact may result in broken glass or cracking of the liquid crystal panels 71 and 72.
[0050] Figure 3 This is a cross-sectional view schematically showing a portion of the configuration of a liquid crystal display device 1 according to one embodiment of this specification. Figure 3 A front panel 11 and liquid crystal panels 31 and 32 arranged adjacent to each other behind the front panel 11 are shown. Figure 3 The top side is the front side. The front panel 11 has a uniform thickness, and its front and back sides are parallel. In several configuration examples described below, unless otherwise specified, the front panel 11 has a uniform thickness in the area where the liquid crystal panel is bonded.
[0051] LCD panels 31 and 32 are color LCD panels. LCD panels can also be monochrome LCD panels. Various types of LCD panels and their configurations are known; any type of LCD panel can be used. The configurations of various types of LCD panels are well-known; detailed descriptions of them are omitted in this specification.
[0052] The liquid crystal panel 31 includes a TFT substrate 211 and a CF substrate 212. The TFT substrate 211 includes a TFT array fabricated on a glass substrate, and the CF substrate 212 includes a color filter fabricated on a glass substrate. The CF substrate 212 is a facing substrate opposite to the TFT substrate 211. The facing surfaces of the TFT substrate 211 and the CF substrate 212 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0053] Polarizing plates 213 and 214 are respectively disposed on the back side of TFT substrate 211 and the front side of CF substrate 212. The back side of front panel 11 and the front side of polarizing plate 214 are bonded together by OCA film 241, which is an example of bonding area 21.
[0054] The liquid crystal panel 32 includes a TFT substrate 221 and a CF substrate 222. The TFT substrate 221 includes a TFT array fabricated on a glass substrate, and the CF substrate 222 includes a color filter fabricated on a glass substrate. The CF substrate 222 is a facing substrate opposite to the TFT substrate 221. The facing surfaces of the TFT substrate 221 and the CF substrate 222 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0055] Polarizing plates 223 and 224 are respectively disposed on the back side of TFT substrate 221 and the front side of CF substrate 222. The back side of front panel 11 and the front side of polarizing plate 224 are bonded together by OCA film 242, which is an example of bonding area 22.
[0056] Unlike LCD panels, other types of display panels can be constructed with a single glass substrate rather than a multi-substrate structure. For example, OLED display panels include a TFT array and light-emitting elements fabricated on a single glass substrate; these can be covered by a resin layer of structural encapsulation units.
[0057] exist Figure 3 In the example, OCA films 241 and 242 have equal thicknesses. Therefore, the distance between the front side of the liquid crystal panel 31 (the front side of polarizer 214) and the back side of the front panel 11 is equal to the distance between the front side of the liquid crystal panel 32 (the front side of polarizer 224) and the back side of the front panel 11. OCA films 241 and 242 are made of the same material and have the same modulus of elasticity. The modulus of elasticity can be no less than 30 kPa and no more than 140 kPa. This value of the modulus of elasticity can be applied to other configuration examples. In the various configuration examples described below, unless otherwise specified, each component has a substantially uniform thickness.
[0058] The liquid crystal panels 31 and 32 have equal thicknesses. More specifically, the polarizers 214 and 224 have equal thicknesses; the CF substrates 212 and 222 have equal thicknesses; the TFT substrates 211 and 221 have equal thicknesses; and the polarizers 213 and 223 have equal thicknesses.
[0059] The elliptical area 201 enclosed by dashed lines represents the boundary between liquid crystal panels 31 and 32, including their opposing end regions. The end regions of liquid crystal panels 31 and 32 are opposite to and in contact with each other in a direction parallel to the main surface. The front and back sides of liquid crystal panels 31 and 32 are wide main surfaces.
[0060] Figure 4 The arrangement of the end regions of the substrate assembly 231 of the liquid crystal panel 31 and the substrate assembly 232 of the liquid crystal panel 32 is schematically shown. The substrate assembly 231 is composed of a TFT substrate 211 and a CF substrate 212 stacked one on top of the other, and the substrate assembly 232 is composed of a TFT substrate 221 and a CF substrate 222 stacked one on top of the other. As described above, the substrate assemblies 231 and 232 have equal thicknesses.
[0061] Substrate assembly 231 has an end face 216, and substrate assembly 232 has an end face 226. End face 216 is composed of the end faces of a TFT substrate 211 and a CF substrate 212 that are flush with each other. A small gap exists between these end faces. End face 226 is composed of the end faces of a TFT substrate 221 and a CF substrate 222 that are flush with each other. A small gap exists between these end faces.
[0062] End faces 216 and 226 face each other and are in contact with each other. This configuration provides a liquid crystal display device 1 with high display quality. The contact surfaces of end faces 216 and 226 are flat, therefore end faces 216 and 226 are in planar contact. End faces 216 and 226 may typically be far apart and make contact when the front panel 11 deforms (including shrinks). End face 216 is perpendicular to the front side of substrate assembly 231, and end face 226 is perpendicular to the front side of substrate assembly 232. Figure 3 As shown, end faces 216 and 226 are perpendicular to the back surface of the front panel 11. Figure 3 and Figure 4 In the example, the front and back sides of substrate assembly 231 are parallel, the front and back sides of substrate assembly 232 are parallel (substrate assemblies 231 and 232 have a uniform thickness), and the front and back sides of front panel 11 are parallel (front panel 11 has a uniform thickness). The main surfaces of front panel 11 and substrate assemblies 231 and 233 are flat.
[0063] One embodiment of this specification configures the opposite end faces of adjacent liquid crystal panels to have smooth surfaces. Figure 3 and Figure 4 In the configuration example, the opposing end faces 216 and 226 have smooth surfaces. Specifically, end faces 216 and 226 are finished to have a surface roughness Ra below a predetermined value. This configuration reduces the generation of broken glass. Forming smooth surfaces can polish fractured surfaces to remove microcracks, bumps, and dents generated when cutting individual substrate assemblies from the motherboard.
[0064] Figure 5 The inventor's measurement results are provided. Each measurement indicates the relationship between the surface roughness Ra of the liquid crystal panel's end face and the broken glass generated by the contact between the end faces. The measurements were performed with the end faces of the liquid crystal panels in contact in two different ways. One way is to press one liquid crystal panel against another while the end faces of the liquid crystal panels are in contact with each other. The other way is to slide one liquid crystal panel against another while the end faces of the liquid crystal panels are in contact with each other.
[0065] Figure 5The measurement results show that when the surface roughness Ra of the end face is no greater than 0.5 μm, the generation of glass fragments is significantly reduced. The measurement results also show that when the surface roughness Ra of the end face is no greater than 0.2 μm, the generation of glass fragments is essentially eliminated.
[0066] One embodiment of this specification determines that the surface roughness Ra of end faces 216 and 226 is not greater than 0.5 μm and not less than 0.0 μm. This configuration effectively reduces the generation of broken glass caused by contact or changes in contact state between end faces 216 and 226. When the surface roughness Ra of end faces 216 and 226 is not greater than 0.2 μm, the generation of broken glass can be reduced even more effectively. The surface roughness Ra of end faces 216 and 226 can be determined to be not greater than 0.3 μm, which corresponds to an almost mirror-like surface. In the use of the liquid crystal display device 1, the surface roughness of the areas where opposite end faces are in contact with each other or are to be in contact can be within the above-mentioned range. For example, the entire end face can have a surface roughness within the above-mentioned range.
[0067] The end face of a liquid crystal panel can have various shapes. In the following description, some embodiments of the end face in this specification will be described.
[0068] Figure 6 This is a cross-sectional view schematically showing a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. Figure 6 A front panel 11 and liquid crystal panels 31 and 32 arranged adjacent to each other behind the front panel 11 are shown. Figure 6 The top side is the front. LCD panels 31 and 32 are color LCD panels. Various types of LCD panels and their configurations are known; any type of LCD panel can be used.
[0069] The liquid crystal panel 31 includes a TFT substrate 311 and a CF substrate 312. The TFT substrate 311 includes a TFT array fabricated on a glass substrate, and the CF substrate 312 includes a color filter fabricated on a glass substrate. The CF substrate 312 is a facing substrate opposite to the TFT substrate 311. The facing surfaces of the TFT substrate 311 and the CF substrate 312 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0070] Polarizing plates 313 and 314 are respectively disposed on the back side of TFT substrate 311 and the front side of CF substrate 312. The back side of front panel 11 and the front side of polarizing plate 314 are bonded together by OCA film 341, which is an example of bonding area 21.
[0071] The liquid crystal panel 32 includes a TFT substrate 321 and a CF substrate 322. The TFT substrate 321 includes a TFT array fabricated on a glass substrate, and the CF substrate 322 includes a color filter fabricated on a glass substrate. The CF substrate 322 is a facing substrate opposite to the TFT substrate 321. The facing surfaces of the TFT substrate 321 and the CF substrate 322 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0072] Polarizing plates 323 and 324 are respectively disposed on the back side of TFT substrate 321 and the front side of CF substrate 322. The back side of front panel 11 and the front side of polarizing plate 324 are bonded together by OCA film 342, which is an example of bonding area 22.
[0073] Unlike LCD panels, other types of display panels can be constructed with a single glass substrate rather than a multi-substrate structure. For example, OLED display panels include a TFT array and light-emitting elements fabricated on a single glass substrate; these can be covered by a resin layer of structural encapsulation units.
[0074] exist Figure 6 In the example, OCA films 341 and 342 have equal thickness. Therefore, the distance between the front side of the liquid crystal panel 31 (the front side of the polarizer 314) and the back side of the front panel 11 is equal to the distance between the front side of the liquid crystal panel 32 (the front side of the polarizer 324) and the back side of the front panel 11. OCA films 341 and 342 are made of the same material and have the same elastic modulus.
[0075] Liquid crystal panels 31 and 32 have equal thicknesses. More specifically, polarizers 314 and 324 have equal thicknesses; CF substrates 312 and 322 have equal thicknesses; TFT substrates 311 and 321 have equal thicknesses; and polarizers 313 and 323 have equal thicknesses. The elliptical region 301 enclosed by dashed lines represents the boundary between liquid crystal panels 31 and 32, including their opposing end regions. The end regions of liquid crystal panels 31 and 32 are opposite to and in contact with each other in a direction parallel to the main surface.
[0076] Figure 7 The arrangement of the end regions of the substrate assembly 331 of the liquid crystal panel 31 and the substrate assembly 332 of the liquid crystal panel 32 is schematically shown. The substrate assembly 331 is composed of a TFT substrate 311 and a CF substrate 312 stacked one on top of the other, and the substrate assembly 332 is composed of a TFT substrate 321 and a CF substrate 322 stacked one on top of the other. As described above, the substrate assemblies 331 and 332 have equal thicknesses.
[0077] Substrate assembly 331 has an end face 316, and substrate assembly 332 has an end face 326. End face 316 is composed of the end faces of a TFT substrate 311 and a CF substrate 312 that are flush with each other. A small gap exists between these end faces. End face 326 is composed of the end faces of a TFT substrate 321 and a CF substrate 322 that are flush with each other. A small gap exists between these end faces.
[0078] End faces 316 and 326 have the same as the reference Figures 3 to 5 The end faces 216 and 226 described have the same surface roughness Ra. This configuration effectively reduces the generation of broken glass caused by contact or changes in the contact state between end faces 316 and 326. End faces 316 and 326 are opposite to and in contact with each other. This configuration provides a liquid crystal display device 1 with high display quality. Their contact surfaces are flat, so end faces 316 and 326 are in planar contact. End faces 316 and 326 can be far apart from each other.
[0079] End faces 316 and 326 are inclined parallel surfaces facing each other. The inclined end face 316 is perpendicular to the normal of the front (main surface) of the substrate assembly 331 (CF substrate 312). Figure 6 and Figure 7 The angle TA1 between the end face 316 and the front surface of the substrate assembly 331 is acute. The end face 316 is inclined relative to the normal to the back surface of the front panel 11. The angle between the end face 316 and the back surface of the front panel 11 is acute. Figure 6 In the example, the back side of the front panel 11 is parallel to the front side of the substrate assembly 331.
[0080] The normal of the inclined end face 316 relative to the back surface (main surface) of the substrate assembly 331 (TFT substrate 311) Figure 6 and Figure 7 The angle BA1 between the end face 316 and the back surface of the substrate assembly 331 is obtuse. (The vertical direction is not specified in the original text.) Figure 6 In the example, the back side of the front panel 11 is parallel to the back side of the substrate assembly 331.
[0081] The normal of the inclined end face 326 relative to the front (main face) of the substrate assembly 332 (CF substrate 322) Figure 6 and Figure 7 The angle TA2 between end face 326 and the front surface of substrate assembly 332 is obtuse. End face 326 is inclined relative to the normal to the back surface of front panel 11. The angle between end face 326 and the back surface of front panel 11 is obtuse. Figure 6 In the example, the back side of the front panel 11 is parallel to the front side of the substrate assembly 332.
[0082] The normal of the inclined end face 326 relative to the back surface (main surface) of the substrate assembly 332 (TFT substrate 321) Figure 6 and Figure 7 The angle BA2 between the end face 326 and the back surface of the substrate assembly 332 is acute. (The vertical direction is not specified in the original text.) Figure 6 In the example, the back side of the front panel 11 is parallel to the back side of the substrate assembly 332. Figure 6 and Figure 7 In the example, the front and back sides of substrate assembly 331 are parallel, the front and back sides of substrate assembly 332 are parallel (substrate assemblies 331 and 332 have a uniform thickness), and the front and back sides of front panel 11 are parallel (front panel 11 has a uniform thickness). The main surfaces of front panel 11 and substrate assemblies 331 and 332 are flat.
[0083] Angle TA1 equals angle BA2, and angle BA1 equals angle TA2. Angles TA1 and BA2 can be obtuse angles, and angles BA1 and TA2 can be acute angles.
[0084] Figure 8 This is a perspective view schematically showing the configuration of a portion of the substrate assembly 331. The axis parallel to the normal to the main surface of the front panel 11 is defined as the Z-axis, the axis in the direction where the liquid crystal panels 31 and 32 are adjacent to each other is defined as the X-axis, and the axis perpendicular to the X-axis and Z-axis is defined as the Y-axis. (See reference...) Figure 6 and Figure 7 As described, end face 316 is a surface inclined relative to the X-axis, and it is flat rather than curved. End face 316 extends along the Y-axis. The end region of substrate assembly 331 opposite to the end region of substrate assembly 332 has the same cross-section along the Y-axis over a specific length. The corner between the front face 317 and end face 316 is rounded, and the corner between the back face 318 and end face 316 is rounded. The rounding method can be selected as needed.
[0085] Figure 9 This is a schematic cross-sectional view illustrating the movement of liquid crystal panels 31 and 32 as the current panel 11 retracts. As the current panel 11 retracts along the X-axis, the liquid crystal panels 31 and 32 move closer to each other. Since the opposing end faces 316 and 326 are inclined parallel surfaces, the contacting end faces 316 and 326 can easily slide in a specific direction. Therefore, the generation of broken glass is effectively reduced.
[0086] like Figure 9 As shown, the end face 316 of the liquid crystal panel 31 slides towards the front panel 11, and the end face 326 of the liquid crystal panel 32 slides away from the front panel 11. Figure 9In this configuration, liquid crystal panels 31 and 32 rotate to the left together with the movement of end faces 316 and 326. The thickness of OCA film 341 decreases in the region near end face 316 and increases in the opposite region. The thickness of OCA film 342 increases in the region near end face 326 and decreases in the opposite region. OCA films 341 and 342 have a smaller modulus of elasticity than the front panel 11, CF substrates 312 and 322, and TFT substrates 311 and 321, thus allowing them to deform easily. The modulus of elasticity can be within the range described above.
[0087] Figure 10 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. Figure 10 A front panel 11 and liquid crystal panels 31 and 32 arranged adjacent to each other behind the front panel 11 are shown. Figure 10 The top side is the front. LCD panels 31 and 32 are color LCD panels. Various types of LCD panels and their configurations are known; any type of LCD panel can be used.
[0088] The liquid crystal panel 31 includes a TFT substrate 411 and a CF substrate 412. The TFT substrate 411 includes a TFT array fabricated on a glass substrate, and the CF substrate 412 includes a color filter fabricated on a glass substrate. The CF substrate 412 is a facing substrate opposite to the TFT substrate 411. The facing surfaces of the TFT substrate 411 and the CF substrate 412 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0089] Polarizing plates 413 and 414 are respectively disposed on the back side of TFT substrate 411 and the front side of CF substrate 412. The back side of front panel 11 and the front side of polarizing plate 414 are bonded together by OCA film 441, which is an example of bonding area 21.
[0090] The liquid crystal panel 32 includes a TFT substrate 421 and a CF substrate 422. The TFT substrate 421 includes a TFT array fabricated on a glass substrate, and the CF substrate 422 includes a color filter fabricated on a glass substrate. The CF substrate 422 is a facing substrate opposite to the TFT substrate 421. The facing surfaces of the TFT substrate 421 and the CF substrate 422 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0091] Polarizing plates 423 and 424 are respectively disposed on the back side of TFT substrate 421 and the front side of CF substrate 422. The back side of front panel 11 and the front side of polarizing plate 424 are bonded together by OCA film 442, which is an example of bonding area 22.
[0092] Unlike LCD panels, other types of display panels can be constructed with a single glass substrate rather than a multi-substrate structure. For example, OLED display panels include a TFT array and light-emitting elements fabricated on a single glass substrate; these can be covered by a resin layer of structural encapsulation units.
[0093] exist Figure 10 In the example, OCA films 441 and 442 have equal thickness. Therefore, the distance between the front side of the liquid crystal panel 31 (the front side of the polarizer 414) and the back side of the front panel 11 is equal to the distance between the front side of the liquid crystal panel 32 (the front side of the polarizer 424) and the back side of the front panel 11. OCA films 441 and 442 are made of the same material and have the same elastic modulus.
[0094] Liquid crystal panels 31 and 32 have equal thicknesses. More specifically, polarizers 414 and 424 have equal thicknesses; CF substrates 412 and 422 have equal thicknesses; TFT substrates 411 and 421 have equal thicknesses; and polarizers 413 and 423 have equal thicknesses. The elliptical region 401 surrounded by dashed lines represents the boundary between liquid crystal panels 31 and 32, including their opposing end regions. The end regions of liquid crystal panels 31 and 32 are opposite to and in contact with each other in a direction parallel to the main surface.
[0095] Figure 11 The arrangement of the end regions of the substrate assembly 431 of the liquid crystal panel 31 and the substrate assembly 432 of the liquid crystal panel 32 is schematically shown. The substrate assembly 431 is composed of a TFT substrate 411 and a CF substrate 412 stacked one on top of the other, and the substrate assembly 432 is composed of a TFT substrate 421 and a CF substrate 422 stacked one on top of the other. As described above, the substrate assemblies 431 and 432 have equal thicknesses.
[0096] Substrate assembly 431 has an end face 416, and substrate assembly 432 has an end face 426. End face 416 is formed by the end face of TFT substrate 411 and the end face of CF substrate 412. There are minute gaps between these end faces. End face 426 is formed by the end face of TFT substrate 421 and the end face of CF substrate 422. There are minute gaps between these end faces.
[0097] End faces 416 and 426 have the same as the reference. Figures 3 to 5 The end faces 216 and 226 described have the same surface roughness Ra. This configuration effectively reduces the generation of broken glass caused by contact or changes in contact state between end faces 416 and 426. End faces 416 and 426 are opposite to each other and in contact. This configuration provides a liquid crystal display device 1 with high display quality. End faces 416 and 426 are curved surfaces and they are in linear contact. End faces 416 and 426 can be far apart from each other.
[0098] End faces 416 and 426 are convex surfaces facing each other. The cross-sections of end faces 416 and 426 are convex circular arcs, and the tips of end faces 416 and 426 are in contact with each other. In this example, end faces 416 and 426 have identical shapes. The distance from the tip of end face 416 to the back surface of the front panel 11 is equal to the distance from the tip of end face 426 to the back surface of the front panel 11. The distance from the center of curvature 418 of the arc to the back surface of the front panel 11 is equal to the distance from the center of curvature 428 of the arc to the back surface of the front panel 11. End faces 416 and 426 are in contact with each other along a line extending along the Y-axis.
[0099] exist Figure 10 In the example, the back side of the front panel 11 is parallel to the front side of the substrate assembly 431. The back side of the front panel 11 is parallel to the front side of the substrate assembly 432. Figure 10 and Figure 11 In the example shown, the front and back sides of substrate assembly 431 are parallel, the front and back sides of substrate assembly 432 are parallel (substrate assemblies 431 and 432 have a uniform thickness), and the front and back sides of front panel 11 are parallel (front panel 11 has a uniform thickness). The main surfaces of front panel 11 and substrate assemblies 431 and 432 are flat.
[0100] Figure 12 This is a perspective view schematically showing the configuration of a portion of the substrate assembly 431. (See reference...) Figure 10 and Figure 11 As described, end face 416 is a convex surface. End face 416 is a semi-tubular surface that protrudes along the X-axis and extends along the Y-axis. Front face 417 and back face 419 are parallel and flat. The X-axis and Y-axis are the in-plane axes of front face 417 and back face 419. The end region of substrate assembly 431 opposite to the end region of substrate assembly 432 has the same cross-section along the Y-axis over a certain length.
[0101] Figure 13 This is a schematic cross-sectional view illustrating the movement of liquid crystal panels 31 and 32 as the current panel 11 retracts. As the current panel 11 retracts, the liquid crystal panels 31 and 32 move closer to each other along the X-axis. Since the opposing end faces 416 and 426 are curved surfaces, the contacting end faces 416 and 426 can easily slide relative to each other. Therefore, the generation of broken glass is effectively reduced.
[0102] exist Figure 13 In the example, the end face 416 of the liquid crystal panel 31 slides toward the front panel 11, and the end face 426 of the liquid crystal panel 32 slides away from the front panel 11. Figure 13 In the middle, LCD panels 31 and 32 rotate to the left together as end faces 416 and 426 move.
[0103] The thickness of OCA film 441 decreases in the region near end face 416 and increases in the opposite region. The thickness of OCA film 442 increases in the region near end face 426 and decreases in the opposite region. OCA films 441 and 442 have a smaller elastic modulus than the front panel 11, CF substrates 412 and 422, and TFT substrates 411 and 421, therefore, they can be easily deformed. The elastic modulus can be within the range described above. End faces 416 and 426 can slide in the direction opposite to the direction described above.
[0104] Because end faces 416 and 426 are in linear contact, the generation of broken glass can be reduced more effectively when moving along the Y-axis. Furthermore, when the current panel 11 deforms along the Z-axis, the curved end faces 416 and 426 can slide easily; this further reduces the generation of broken glass.
[0105] Figure 14 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. In the following description and reference, the main focus will be on... Figures 10 to 12 The differences in the described configuration examples. Figure 14 The configuration examples include OCA membrane 452 instead. Figure 10 In the configuration example, OCA film 442 is used. OCA film 452 is thicker than OCA film 441. For this reason, the distance between the front side of liquid crystal panel 32 and the back side of front panel 11 is greater than the distance between the front side of liquid crystal panel 31 and the back side of front panel 11. The elliptical area 451 surrounded by dashed lines represents the boundary between liquid crystal panels 31 and 32, including their opposite end areas.
[0106] Figure 15 The arrangement of the end regions of the substrate assembly 431 of the liquid crystal panel 31 and the substrate assembly 432 of the liquid crystal panel 32 is schematically shown. As described above, the distance between the front side of the liquid crystal panel 32 and the back side of the front panel 11 is greater than the distance between the front side of the liquid crystal panel 31 and the back side of the front panel 11. Therefore, the tip 461 of the end face 416 of the substrate assembly 431 and the tip 462 of the end face 426 of the substrate assembly 432 are located at different positions along the Z-axis. Specifically, the distance (along the Z-axis) between the tip 461 of the end face 416 of the substrate assembly 431 and the back side of the front panel 11 is shorter than the distance between the tip 462 of the end face 426 of the substrate assembly 432 and the back side of the front panel 11.
[0107] exist Figure 14 and Figure 15In the configuration example, end faces 416 and 426 are normally far apart and do not contact each other. However, the tips 461 of end face 416 and the tip 462 of end face 426 are located at the same position on the X-axis. Therefore, when viewed along the Z-axis, end faces 416 and 426 appear to be in contact with each other. This configuration prevents the generation of broken glass without compromising display quality. The tip 461 of end face 416 can be located at a position greater than... Figure 15 The position shown is closer to the end face 426, and the tip 462 of the end face 426 can be located at a position closer to the end face 426 than the end face 426. Figure 15 The position shown is closer to end face 416. In other words, when viewed along the Z-axis, tip 461 can be located on end face 426, while tip 462 can be located on end face 416.
[0108] Figure 16 This is a schematic cross-sectional view illustrating the movement of liquid crystal panels 31 and 32 as the current panel 11 retracts. As the current panel 11 retracts, the liquid crystal panels 31 and 32 move closer to each other along the X-axis. Since the opposing end faces 416 and 426 are curved surfaces, the contacting end faces 416 and 426 can easily slide relative to each other. Therefore, the generation of broken glass is effectively reduced.
[0109] In this example, the end face 416 of the liquid crystal panel 31 slides toward the front panel 11, and the end face 426 of the liquid crystal panel 32 slides away from the front panel 11. Figure 16 In the middle, LCD panels 31 and 32 rotate to the left together as end faces 416 and 426 move.
[0110] The thickness of OCA film 441 decreases in the region near end face 416 and increases in the opposite region. The thickness of OCA film 452 increases in the region near end face 426 and decreases in the opposite region. OCA films 441 and 452 have a smaller elastic modulus than the front panel 11, CF substrates 412 and 422, and TFT substrates 411 and 421, therefore, they can be easily deformed. The elastic modulus can be within the range described above.
[0111] Because the tips of the end faces of liquid crystal panels 31 and 32 are positioned differently, the rotation of liquid crystal panels 31 and 32 is restricted to one direction. Specifically, the liquid crystal panel whose tip is farther from the front panel 11 rotates with its tip moving away from the front panel 11. On the other hand, the liquid crystal panel whose tip is closer to the front panel 11 rotates with its tip moving closer to the front panel 11. This configuration, which positions the tips of the two liquid crystal panels at different distances from the front panel 11, allows for restriction of the movement of the liquid crystal panels, which facilitates the design of the liquid crystal display device 1. Adhesive areas of different thicknesses can also be applied. Figures 3 to 9 The configuration example shown.
[0112] Figure 17 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. In the following description and reference, the main focus will be on... Figures 10 to 12 The differences in the described configuration examples. Figure 17 The configuration examples include OCA membrane 472 instead. Figure 10 The configuration example shows OCA membrane 442. OCA membrane 472 has a smaller elastic modulus than OCA membrane 441. The rest is consistent with the reference. Figures 10 to 12 The configuration examples described are the same; for example, OCA membranes 441 and 472 have the same thickness.
[0113] Figure 18 This is a schematic cross-sectional view illustrating the movement of liquid crystal panels 31 and 32 as the current panel 11 retracts. When the current panel 11 retracts, the liquid crystal panels 31 and 32 move closer to each other along the X-axis. Since the opposing end faces 416 and 426 are curved surfaces, the contacting end faces 416 and 426 can easily slide relative to each other. Therefore, the generation of broken glass is effectively reduced.
[0114] In this example, the end face 416 of the liquid crystal panel 31 remains substantially stationary. The end face 426 of the liquid crystal panel 32 slides away from the front panel 11. Figure 18 In this configuration, the liquid crystal panel 32 rotates to the left as the end face 426 moves. The thickness of the OCA film 472 increases in the region near the end face 426 and decreases in the opposite region. This is caused by the difference in elastic modulus between the OCA films 441 and 472. The elastic modulus of the OCA films 441 and 472 can be within the range described above. The liquid crystal panel 32 can rotate in opposite directions.
[0115] This configuration, which allows OCA films 441 and 472 to have different elastic moduli, enables the restriction of liquid crystal panel movement, facilitating the design of liquid crystal display devices. Adhesive areas with different elastic moduli can also be applied... Figures 3 to 16 The configuration example shown.
[0116] Figure 19 This is a cross-sectional view schematically showing a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. Figure 19 A front panel 11 and liquid crystal panels 31 and 32 arranged adjacent to each other behind the front panel 11 are shown. Figure 19 The top side is the front. LCD panels 31 and 32 are color LCD panels. Various types of LCD panels and their configurations are known; any type of LCD panel can be used.
[0117] The liquid crystal panel 31 includes a TFT substrate 511 and a CF substrate 512. The TFT substrate 511 includes a TFT array fabricated on a glass substrate, and the CF substrate 512 includes a color filter fabricated on a glass substrate. The CF substrate 512 is a facing substrate opposite to the TFT substrate 511. The facing surfaces of the TFT substrate 511 and the CF substrate 512 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0118] Polarizing plates 513 and 514 are respectively disposed on the back side of the TFT substrate 511 and the front side of the CF substrate 512. The back side of the front panel 11 and the front side of the polarizing plate 514 are bonded together by an OCA film 541, which is an example of the bonding area 21.
[0119] The liquid crystal panel 32 includes a TFT substrate 521 and a CF substrate 522. The TFT substrate 521 includes a TFT array fabricated on a glass substrate, and the CF substrate 522 includes a color filter fabricated on a glass substrate. The CF substrate 522 is a facing substrate opposite to the TFT substrate 521. The facing surfaces of the TFT substrate 521 and the CF substrate 522 are bonded together with a sealant (not shown), and the liquid crystal material (not shown) is enclosed in a space surrounded by the sealant.
[0120] Polarizing plates 523 and 524 are respectively disposed on the back side of TFT substrate 521 and the front side of CF substrate 522. The back side of front panel 11 and the front side of polarizing plate 524 are bonded together by OCA film 542, which is an example of bonding area 22.
[0121] Unlike LCD panels, other types of display panels can be constructed with a single glass substrate rather than a multi-substrate structure. For example, OLED display panels include a TFT array and light-emitting elements fabricated on a single glass substrate; these can be covered by a resin layer of structural encapsulation units.
[0122] exist Figure 19 In the example, OCA films 541 and 542 have equal thickness. Therefore, the distance between the front side of the liquid crystal panel 31 (the front side of the polarizer 514) and the back side of the front panel 11 is equal to the distance between the front side of the liquid crystal panel 32 (the front side of the polarizer 524) and the back side of the front panel 11. OCA films 541 and 542 are made of the same material and have the same elastic modulus.
[0123] Liquid crystal panels 31 and 32 have equal thicknesses. More specifically, polarizers 514 and 524 have equal thicknesses; CF substrates 512 and 522 have equal thicknesses; TFT substrates 511 and 521 have equal thicknesses; and polarizers 513 and 523 have equal thicknesses. The elliptical region 501 surrounded by dashed lines represents the boundary between liquid crystal panels 31 and 32, including their opposing end regions. The end regions of liquid crystal panels 31 and 32 are opposite to each other and far apart in a direction parallel to the main surface.
[0124] Figure 20 The arrangement of the end regions of the substrate assembly 531 of the liquid crystal panel 31 and the substrate assembly 532 of the liquid crystal panel 32 is schematically shown. The opposing end regions of the substrate assemblies 531 and 532 have the same cross-section along the Y-axis over a specific length. The substrate assembly 531 is composed of a TFT substrate 511 and a CF substrate 512 stacked one on top of the other, and the substrate assembly 532 is composed of a TFT substrate 521 and a CF substrate 522 stacked one on top of the other. As described above, the substrate assemblies 531 and 532 have equal thicknesses.
[0125] Substrate assembly 531 has an end face 516, and substrate assembly 532 has an end face 526. End face 516 is formed by the end face of TFT substrate 511 and the end face of CF substrate 512. There are minute gaps between these end faces. End face 526 is formed by the end face of TFT substrate 521 and the end face of CF substrate 522. There are minute gaps between these end faces.
[0126] End faces 516 and 526 have the same as the reference Figures 3 to 5 The end faces 216 and 226 described have the same surface roughness Ra. This configuration effectively reduces the generation of broken glass caused by changes in the contact or contact state between end faces 516 and 526. End faces 516 and 526 are curved surfaces and they are far apart from each other. End faces 516 and 526 can contact each other under normal conditions. In this case, the contact between end faces 516 and 526 is a linear contact.
[0127] End faces 516 and 526 are convex surfaces and face each other. The cross-sections of end faces 516 and 526 are convex circular arcs, and the tips 561 of end face 516 and the tip 562 of end face 526 are located at different positions on the Z-axis. In other words, they are at different distances from the back surface of the front panel 11. Figure 20In the example, the two tips 561 and 562 are located at the same position on the X-axis. In other words, when viewed along the normal to the back of the front panel 11, the two tips 561 and 562 coincide. This configuration provides high display quality. Tip 561 or 562 may be located at the same position on the X-axis as another point on end face 526 or 516. When viewed along the Z-axis, the opposite end faces 516 and 526 may appear as if they have zero distance or overlap each other.
[0128] The center of curvature 518 of the cross-section of end face 516 and the center of curvature 528 of the cross-section of end face 526 are located at different distances (different positions on the Z-axis) from the back surface of the front panel 11. Specifically, the distance between the center of curvature 518 of end face 516 and the back surface of the front panel 11 is longer than the distance between the center of curvature 528 of end face 526 and the back surface of the front panel 11. (Refer to...) Figure 10 and Figure 11 In the configuration example described, the opposite end faces 416 and 426 are planar symmetric. However, in this example, end faces 516 and 526 are not planar symmetric.
[0129] exist Figure 19 In the example, the back side of the front panel 11 is parallel to the front side of the substrate assembly 531. The back side of the front panel 11 is parallel to the front side of the substrate assembly 532. Figure 19 and Figure 20 In the example shown, the front and back sides of substrate assembly 531 are parallel, the front and back sides of substrate assembly 532 are parallel (substrate assemblies 531 and 532 have a uniform thickness), and the front and back sides of front panel 11 are parallel (front panel 11 has a uniform thickness). The main surfaces of front panel 11 and substrate assemblies 531 and 532 are flat.
[0130] Figure 21 This is a schematic cross-sectional view illustrating the movement of liquid crystal panels 31 and 32 as the current panel 11 retracts. When the current panel 11 retracts, the liquid crystal panels 31 and 32 move closer to each other along the X-axis. Since the opposing end faces 516 and 526 are curved surfaces, the contacting end faces 516 and 526 can easily slide. Therefore, the generation of broken glass is effectively reduced.
[0131] The end face 516 of the liquid crystal panel 31 slides away from the front panel 11, and the end face 526 of the liquid crystal panel 32 slides towards the front panel 11. The liquid crystal panels 31 and 32 rotate to the right as the end faces 516 and 526 move. Due to the shape difference between the end faces 516 and 526, the direction of sliding is limited as described above. Therefore, it is convenient to design the liquid crystal display device 1.
[0132] The thickness of OCA film 541 increases in the region near end face 516 and decreases in the opposite region. The thickness of OCA film 542 decreases in the region near end face 526 and increases in the opposite region. OCA films 541 and 542 have a smaller modulus of elasticity than the front panel 11, CF substrates 512 and 522, and TFT substrates 511 and 521, so they can be easily deformed. The modulus of elasticity can be within the range described above.
[0133] When end faces 516 and 526 come into contact with each other, the contact is linear. For this reason, the generation of broken glass can be effectively reduced even when the liquid crystal panels 31 and 32 move along the Y-axis. Furthermore, when the front panel 11 deforms along the Z-axis, the end faces 516 and 526, which have curved surfaces, can slide easily; the generation of broken glass can be effectively reduced.
[0134] Figure 22 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. In the following description and reference, the main focus will be on... Figures 6 to 9 The differences in the described configuration examples. Figure 22 In the configuration example, OCA film 641 adheres the liquid crystal panel 31, including substrate assembly 631, to the back of front panel 11, and OCA film 642 adheres the liquid crystal panel 32, including substrate assembly 632, to the back of front panel 11.
[0135] OCA films 641 and 642 have different elastic moduli. Specifically, OCA film 642 has a smaller elastic modulus than OCA film 641. Substrate assembly 631 is thicker than substrate assembly 632. This configuration determines the liquid crystal panel that moves primarily with the deformation of the front panel 11, thus facilitating the design of the liquid crystal display device 1. The two substrate assemblies can have equal thicknesses.
[0136] Figure 23 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. Hereinafter, the differences from the aforementioned configuration example will be primarily described. The substrate assembly 731 has the same features as referenced... Figures 6 to 9 The substrate assembly 732 has the same configuration as the reference substrate assembly 331. Figures 10 to 13 The substrate assembly 432 in the described configuration example has the same configuration. The substrate assembly 731 is thicker than the substrate assembly 732.
[0137] OCA film 741 bonds the liquid crystal panel 31, including substrate assembly 731, to the back side of the front panel 11, and OCA film 742 bonds the liquid crystal panel 32, including substrate assembly 732, to the back side of the front panel 11. OCA films 741 and 742 have different elastic moduli. Specifically, OCA film 742 has a smaller elastic modulus than OCA film 741. This configuration determines the liquid crystal panel that moves primarily with the deformation of the front panel 11, thus facilitating the design of the liquid crystal display device 1. The two substrate assemblies can have equal thicknesses.
[0138] Figure 24 This is a cross-sectional view schematically illustrating a portion of the configuration of a liquid crystal display device 1 according to another embodiment of this specification. In the following description and reference, the main focus will be on... Figures 10 to 13 The differences between the described configuration example and the one shown. The substrate assembly 832 has the same characteristics as the reference. Figures 10 to 13 The substrate assembly 332 in the described configuration example has the same configuration. OCA film 841 bonds the liquid crystal panel 31, including substrate assembly 831, to the back side of the front panel 11, and OCA film 842 bonds the liquid crystal panel 32, including substrate assembly 832, to the back side of the front panel 11. OCA films 841 and 842 have the same thickness and the same modulus of elasticity.
[0139] The substrate assembly 831 has an end face 816 opposite to the end face 826 of the substrate assembly 832. The end face 826 is as shown in reference... Figures 10 to 13 The convex surface described. End face 816 has a shape complementary to end face 826; end face 816 is a concave surface. End faces 816 and 826 are either away from or in contact with each other. End face 816 may have a surface roughness Ra within the range described above. Figure 24 The configuration example is particularly effective for deformation (bending deformation) of the front panel 11 along the Z-axis.
[0140] As described above, embodiments of the present invention have been presented; however, the present invention is not limited to the foregoing embodiments. Those skilled in the art can readily modify, add to, or transform each element in the foregoing embodiments within the scope of the present invention. A portion of the configuration of one embodiment may be replaced by the configuration of another embodiment, or the configuration of one embodiment may be incorporated into the configuration of another embodiment.
Claims
1. A display device, comprising: Support substrate; A first display panel is bonded to a first surface of the supporting substrate via a first adhesive area; as well as The second display panel is bonded to the first surface of the supporting substrate via a second adhesive area. The first display panel includes a first glass substrate. The second display panel includes a second glass substrate. In this configuration, the first end face of the first glass substrate and the second end face of the second glass substrate are opposite to each other but are not bonded together. The first end face is a convex curved surface with a convex circular arc cross-section. Wherein, the first end face and the second end face are in line contact, and The first end face and the second end face have a surface roughness Ra of no more than 0.5 μm.
2. The display device according to claim 1, wherein, The first end face and the second end face have a surface roughness Ra of no more than 0.2 μm.
3. The display device according to claim 1, wherein, The second end face is a surface that is inclined relative to the normal of the first face.
4. The display device according to claim 3, wherein, The second end face is a convex curved surface.
5. The display device according to claim 4, wherein, The distance between the tip of the first end face and the first face is different from the distance between the tip of the second end face and the first face.
6. The display device according to claim 5, wherein, The first adhesive region is thicker than the second adhesive region.
7. The display device according to claim 5, wherein, The first adhesive region and the second adhesive region have the same thickness.
8. A display device, comprising: Support substrate; A first display panel is bonded to a first surface of the supporting substrate via a first adhesive area; as well as The second display panel is bonded to the first surface of the support substrate via a second adhesive area; The first display panel includes a first glass substrate. The second display panel includes a second glass substrate. In this configuration, the first end face of the first glass substrate and the second end face of the second glass substrate are opposite to each other. Wherein, the first end face and the second end face have a surface roughness Ra of no more than 0.5 μm, and The first adhesive region and the second adhesive region have different elastic moduli.