WO2017061114A1 - Dispositif d'affichage à cristaux liquides - Google Patents

Dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2017061114A1
WO2017061114A1 PCT/JP2016/004486 JP2016004486W WO2017061114A1 WO 2017061114 A1 WO2017061114 A1 WO 2017061114A1 JP 2016004486 W JP2016004486 W JP 2016004486W WO 2017061114 A1 WO2017061114 A1 WO 2017061114A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal panel
display device
light
crystal display
Prior art date
Application number
PCT/JP2016/004486
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English (en)
Japanese (ja)
Inventor
佐藤　弘章
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2017061114A1 publication Critical patent/WO2017061114A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • the present invention relates to a liquid crystal display device having a curved display surface.
  • a liquid crystal display device having a liquid crystal panel on the front side and a backlight on the back side.
  • the backlight is a planar light emitting device that emits light from the back side to the liquid crystal panel.
  • an edge-light type backlight includes an optical sheet such as a reflector, a light guide plate (LGP), and a diffusion sheet, and a white LED (Light Emitting Diode) that allows light to enter from the side of the light guide plate.
  • LGP light guide plate
  • a light source are arranged in order from the back side.
  • Patent Document 1 discloses an edge-light type backlight in which a light source is disposed so as to face a short side surface (a non-curved side surface) of a light guide plate that is concavely curved on the display surface side.
  • Patent Document 2 discloses an edge-light type backlight in which a light source is disposed so as to face a side surface (curved side surface) on the long side of a light guide plate that is convexly curved toward the display surface side. Yes.
  • the present invention is a liquid crystal display device having a curved display surface.
  • This liquid crystal display device can reliably make the light from the light source incident on the light guide plate regardless of the curved shape of the light guide plate or the frame, and can prevent the occurrence of uneven brightness.
  • the liquid crystal display device includes a liquid crystal panel and an edge light type backlight.
  • the liquid crystal panel has a curved shape, a display surface, and a back surface on the back side of the display surface.
  • the backlight includes a light source and a light guide plate, and is arranged to irradiate light from the back surface of the liquid crystal panel.
  • the light guide plate has a main surface portion having a curved shape similar to that of the liquid crystal panel, and a bent edge portion that is bent and extends from the main surface portion.
  • the light source has a plurality of light emitting elements arranged to face the end surface of the bent edge.
  • the light source can be easily opposed to the side surface of the light guide plate regardless of the curved shape of the light guide plate or frame, so that the light from the light source reliably enters the light guide plate. Accordingly, it is possible to prevent occurrence of luminance unevenness in the liquid crystal display device.
  • FIG. 1 is a perspective view showing a liquid crystal display device according to the first embodiment.
  • FIG. 2 is a partial cross-sectional view showing the internal structure of the liquid crystal display device shown in FIG.
  • FIG. 3 is a diagram showing the positional relationship between the light guide plate and the light source in the liquid crystal display device shown in FIG.
  • FIG. 4 is a perspective view showing a liquid crystal display device according to the second embodiment.
  • FIG. 5 is a cross-sectional view showing the internal structure of the liquid crystal display device shown in FIG. 6 is a diagram showing the positional relationship between the light guide plate and the light source in the liquid crystal display device shown in FIG.
  • LEDs that are light sources are arranged along the short sides of the light guide plate. For this reason, the number of LEDs is reduced as compared with the case where the light source is arranged along the long side, and the luminance may be insufficient.
  • a driving IC Integrated Circuit
  • the LED is disposed in the vicinity of the driving IC, and there is a concern that the rise in the component temperature is promoted.
  • FIG. 1 is a perspective view showing a liquid crystal display device 1 according to a first embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view showing the internal structure of the liquid crystal display device 1.
  • FIG. 3 is a diagram illustrating a positional relationship between the light guide plate 122 and the light source 124 in the liquid crystal display device 1. 2 shows an enlarged cross section of a portion A surrounded by a broken line in FIG.
  • the liquid crystal display device 1 is a vehicle-mounted liquid crystal display device applied to, for example, an instrument panel of a vehicle. As shown in FIGS. 1 to 3, the liquid crystal display device 1 includes a liquid crystal panel 11 disposed on the front side, an edge light type backlight 12 disposed on the back side, the liquid crystal panel 11 and the backlight 12. It has a frame 13 to hold. That is, the liquid crystal panel 11 has a display surface 11A and a back surface 11B on the back side of the display surface 11A, and the backlight 12 irradiates light from the back surface 11B of the liquid crystal panel 11.
  • the liquid crystal display device 1 has a rectangular shape in plan view and is curved along the longitudinal direction.
  • the liquid crystal panel 11 includes, for example, a liquid crystal layer, two glass substrates (including an alignment film, a transparent electrode, and a color filter) that sandwich the liquid crystal layer, and two sheets disposed outside the glass substrate.
  • polarizing plate By controlling the on / off of the voltage applied to the transparent electrode to change the direction of the liquid crystal molecules, the light passage state is controlled. A display image is formed by the light passing through the polarizing plate.
  • the liquid crystal panel 11 has a rectangular side defined by a short side (first side) and a long side (second side intersecting the first side) curved in a convex shape on the front side, with the short side being a bus It has a cylindrical surface shape. That is, the four peripheral portions of the liquid crystal panel 11 have two long side portions 11a and two short side portions 11b shorter than each of the long side portions 11a, and a cross section along the longitudinal direction of the liquid crystal panel 11 is The front side has a convex curved shape, and the cross section along the short direction has a linear shape.
  • the operation of the liquid crystal panel 11 is performed by a control unit (not shown) including a drive circuit and a power supply circuit.
  • the drive circuit and the power supply circuit are disposed, for example, on the rear surface of the rear frame 132 described later.
  • the backlight 12 is a planar light emitting device that irradiates the liquid crystal panel 11 with light from the back side.
  • the backlight 12 includes a reflector 121, a light guide plate 122 (LGP: Light Guiding Panel), an optical sheet 123, and a light source 124 that emits light toward the end face 122c of the light guide plate 122.
  • LGP Light Guiding Panel
  • the reflection plate 121, the light guide plate 122, and the optical sheet 123 have the same curved shape as the liquid crystal panel 11 and are arranged in parallel with the liquid crystal panel 11.
  • the light guide plate 122 is a plate-like member made of, for example, polycarbonate or PMMA (Polymethyl methacrylate), diffuses light from the light source 124 incident from the end face, and uniformly emits it to the front side.
  • the reflection plate 121 reflects the light leaked from the light guide plate 122 to the back side toward the front side.
  • the optical sheet 123 includes, for example, a diffusion sheet or a prism sheet, and diffuses light emitted from the light guide plate 122.
  • the light guide plate 122 has a main surface portion 122a having a curved shape similar to that of the liquid crystal panel 11, and a bent edge portion 122b that is bent and extends from the main surface portion 122a to the back surface side.
  • the bent edge portion 122 b is bent and extends to the opposite side of the liquid crystal panel 11.
  • the bent edge portion 122b has one end portion along the longitudinal direction, that is, a portion corresponding to one of the long side portions 11a (one of the four peripheral portions) of the liquid crystal panel 11, and the end surface 122c faces the back side. Formed as follows. That is, the bent edge portion 122b is curved along the longitudinal direction.
  • the bending angle of the bent edge portion 122b is preferably about 90 °, and the coupled portion of the main surface portion 122a and the bent edge portion 122b preferably has an R shape.
  • the length of the bent edge portion 122b is preferably as short as possible. Thereby, the light from the light source 124 can be efficiently guided to the main surface portion 122a.
  • the light guide plate 122 having the above-described shape can be easily formed by using injection molding.
  • the light source 124 includes a plurality of light emitting elements 124a (for example, white LEDs) and is mounted on a flat belt-like flexible printed board 125. The light source 124 is lit while the liquid crystal display device 1 is on.
  • a plurality of light emitting elements 124a for example, white LEDs
  • the light source 124 is lit while the liquid crystal display device 1 is on.
  • the frame 13 has a front frame 131 and a rear frame 132.
  • the front frame 131 is a frame having a shape that matches the outer shape of the liquid crystal panel 11, and holds the liquid crystal panel 11.
  • the rear frame 132 has a shape that matches the curved shape of the liquid crystal panel 11 and supports the backlight 12 from the back side.
  • the rear frame 132 has a light source accommodating portion 132a that protrudes to the back side at a portion corresponding to the bent edge portion 122b of the light guide plate 122.
  • the light source accommodating portion 132a has a substantially U-shaped cross-sectional shape and is curved along the longitudinal direction.
  • a bent edge portion 122b of the light guide plate 122 is accommodated in the space of the light source accommodating portion 132a, and a flexible printed board 125 on which the light source 124 is mounted is disposed on the bottom surface of the light source accommodating portion 132a.
  • the light source 124 is curvedly disposed along the bent edge 122b of the light guide plate 122 and faces the end surface 122c of the bent edge 122b.
  • the flexible printed circuit board 125 is arranged in a curved state along the longitudinal direction, that is, in a curved state in the flatwise direction. Therefore, as in Patent Document 2, the positional accuracy of the light source 124 can be easily ensured and the attaching operation to the rear frame 132 is also simpler than the case where the flexible printed circuit board is bent and attached in the edgewise direction.
  • the liquid crystal display device 1 includes the curved liquid crystal panel 11, the light source 124 and the light guide plate 122, and emits light from the back side of the liquid crystal panel 11.
  • the light guide plate 122 includes a main surface portion 122a having a curved shape similar to that of the liquid crystal panel 11, and a bent edge portion 122b that is bent and extends from the main surface portion 122a.
  • the light source 124 includes a plurality of light emitting elements 124a disposed to face the end surface 122c of the bent edge 122b.
  • the light source 124 faces the end surface 122 c of the light guide plate 122 regardless of the curved shape of the light guide plate 122 or the frame 13.
  • the light from the light source 124 surely enters the light guide plate 122 and is guided to the main surface portion 122a. Therefore, luminance unevenness in the liquid crystal display device 1 is reduced.
  • the bent edge 122 b of the light guide plate 122 is formed in a portion corresponding to the long side 11 a among the four peripheral edges of the liquid crystal panel 11, and the light source 124 is along the bent edge 122 b. Is placed. Accordingly, since a large number of light emitting elements 124a can be arranged, the luminance of the display image can be easily ensured. Further, since the LEDs are not concentrated in the vicinity of the drive IC disposed around the short side portion 11b of the liquid crystal panel 11, an increase in the component temperature due to the LEDs can be prevented.
  • FIG. 4 is a diagram showing a liquid crystal display device 2 according to the second embodiment of the present invention.
  • FIG. 5 is a cross-sectional view showing the internal structure of the liquid crystal display device 2.
  • FIG. 6 is a diagram illustrating a positional relationship between the light guide plate 222 and the light source 224 in the liquid crystal display device 2.
  • FIG. 5 shows an enlarged cross section of a portion B surrounded by a broken line in FIG.
  • the liquid crystal display device 2 holds a liquid crystal panel 21 disposed on the front side, an edge light type backlight 22 disposed on the back side, and the liquid crystal panel 21 and the backlight 22.
  • the frame 23 to be used is included.
  • the liquid crystal display device 2 according to the second embodiment is different from the liquid crystal display device 1 according to the first embodiment in that the curved shape is concave on the front side. Since the basic configuration is the same as that of the first embodiment, description thereof is omitted.
  • the liquid crystal display device 2 includes a liquid crystal panel 21 having a curved shape, an edge light type backlight 22 having a light source 224 and a light guide plate 222 and irradiating light from the back side of the liquid crystal panel 21.
  • the four peripheral parts of the liquid crystal panel 21 have two long side parts 21a and two short side parts 21b shorter than each of the long side parts 21a.
  • the light guide plate 222 includes a main surface portion 222a having a curved shape similar to that of the liquid crystal panel 21, and a bent edge portion 222b that is bent and extends from the main surface portion 222a.
  • the light source 224 includes a plurality of light emitting elements 224a disposed to face the end surface 222c of the bent edge 222b.
  • the reflecting plate 221, the optical sheet 223, and the flexible printed circuit board 225 correspond to the reflecting plate 121, the optical sheet 123, and the flexible printed circuit board 125 in the first embodiment, respectively.
  • the frame 23 includes a front frame 231 and a rear frame 232, and a light source accommodating portion 232 a is provided in the rear frame 232.
  • the same effect as the liquid crystal display device 1 of the first embodiment can be obtained. That is, in the liquid crystal display device 2, the light source 224 faces the end surface 222 c of the light guide plate 222 regardless of the curved shape of the light guide plate 222 or the frame 23. The light from the light source 224 surely enters the light guide plate 222 and is guided to the main surface portion 222a. Therefore, luminance unevenness in the liquid crystal display device 2 is reduced.
  • the present invention has been specifically described based on the embodiment.
  • the present invention is not limited to the above-described embodiment, and can be changed without departing from the gist thereof.
  • the liquid crystal panel in the present invention may have a curved shape (curved surface shape) other than the cylindrical surface shape shown in the embodiment, and the liquid crystal panel may be curved along the short side portion.
  • the curvature of the curved shape of the liquid crystal panel is not constant and may vary. Moreover, it is good also as a corrugated curved shape which connected the concave shape and the convex shape.
  • the liquid crystal panel may be curved along both the short side and the long side.
  • the bent edge of the light guide plate is formed in a portion corresponding to at least one of the four peripheral edges of the liquid crystal panel, and a light source is disposed on the end surface. That's fine.
  • a bent edge portion may be formed at a portion corresponding to the short side portion of the liquid crystal panel that is not curved, and further, a bent edge is provided at a portion corresponding to both the long side portion and the end portion. A part may be formed.
  • the structure in which the bent edge is provided on the non-curved side of the liquid crystal panel has the following advantages. (1) Compared with a normal edge light system in which LEDs are arranged on the side surface of the light guide plate, the frame can be narrowed. (2) Since the light guide distance to the display area can be increased without enlarging the frame as compared with the normal edge light system, the luminance uniformity of the backlight in the display area can be expected to be improved. (3) Since the LED serving as the heat source is separated from the liquid crystal panel, the temperature rise of the liquid crystal panel due to LED heat generation is suppressed.
  • the bending angle of the bent edge portion of the light guide plate may not be 90 °.
  • the curvature may be different between the curved shape of the main surface of the light guide plate and the curved shape of the end surface of the bent edge.
  • the curvature of the curved shape of the end surface of the bent edge portion may be smaller than the curvature of the curved shape of the main surface of the light guide plate.
  • bent edge portion of the light guide plate may be formed to be bent toward the front side (display surface side).
  • the liquid crystal display device according to the present invention is suitable for a liquid crystal display device having a curved display surface.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

La présente invention concerne un dispositif d'affichage à cristaux liquides qui comporte : un panneau à cristaux liquides ayant une forme incurvée ; ainsi qu'un rétroéclairage de type à éclairage périphérique possédant une source lumineuse et une plaque de guidage de lumière, et émettant de la lumière à partir d'une surface arrière du panneau à cristaux liquides. La plaque de guidage de lumière comprend : une section de surface principale qui a la même forme incurvée que ledit panneau à cristaux liquides ; et une section de bordure incurvée qui s'étend en formant une courbe à partir de la section de surface principale. La source lumineuse comporte une pluralité d'éléments électroluminescents qui sont disposés de manière à faire face à une surface terminale de la section de bordure incurvée.
PCT/JP2016/004486 2015-10-08 2016-10-05 Dispositif d'affichage à cristaux liquides WO2017061114A1 (fr)

Applications Claiming Priority (2)

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JP2015-200486 2015-10-08
JP2015200486 2015-10-08

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WO2017061114A1 true WO2017061114A1 (fr) 2017-04-13

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WO (1) WO2017061114A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111915989A (zh) * 2019-05-10 2020-11-10 苹果公司 具有增强的显示区域的电子设备
CN112805502A (zh) * 2018-10-31 2021-05-14 欧姆龙株式会社 显示装置
CN115016177A (zh) * 2022-06-27 2022-09-06 惠科股份有限公司 显示装置和背光模组

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6929725B2 (ja) * 2017-07-14 2021-09-01 株式会社ジャパンディスプレイ バックライト装置、およびこれを備える液晶表示装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001337623A (ja) * 2000-05-30 2001-12-07 Minolta Co Ltd ライトユニット、導光板、導光体及び該導光体を用いた表示装置
JP2001356342A (ja) * 2000-06-16 2001-12-26 Minolta Co Ltd 表示装置
JP2013257360A (ja) * 2012-06-11 2013-12-26 Nippon Seiki Co Ltd 液晶表示装置
JP2014093229A (ja) * 2012-11-05 2014-05-19 Toshiba Corp 面光源装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10115714A (ja) * 1997-06-02 1998-05-06 Dainippon Printing Co Ltd 面光源用出光パネル
JP4216577B2 (ja) * 2002-12-20 2009-01-28 シチズン電子株式会社 導光板
JP4577657B2 (ja) * 2006-06-29 2010-11-10 日本精機株式会社 照明装置
JP2008140698A (ja) * 2006-12-04 2008-06-19 Sony Corp バックライト装置及び液晶表示装置
JP2009117183A (ja) * 2007-11-07 2009-05-28 Hitachi Displays Ltd 液晶表示装置
US8085359B2 (en) * 2008-04-16 2011-12-27 Honeywell International Inc. Folded backlight systems having low index regions that prevent light failing to meet total internal reflection conditions from entering a plate portion and liquid crystal displays using the same
JP2009016359A (ja) * 2008-10-06 2009-01-22 Citizen Electronics Co Ltd 導光板の支持ユニット
JP2010123303A (ja) * 2008-11-18 2010-06-03 Sumitomo Electric Ind Ltd 導光板、配線モジュールおよび電子機器
KR102058588B1 (ko) * 2013-04-11 2019-12-24 삼성디스플레이 주식회사 표시장치
CN203909434U (zh) * 2014-03-05 2014-10-29 群创光电股份有限公司 显示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001337623A (ja) * 2000-05-30 2001-12-07 Minolta Co Ltd ライトユニット、導光板、導光体及び該導光体を用いた表示装置
JP2001356342A (ja) * 2000-06-16 2001-12-26 Minolta Co Ltd 表示装置
JP2013257360A (ja) * 2012-06-11 2013-12-26 Nippon Seiki Co Ltd 液晶表示装置
JP2014093229A (ja) * 2012-11-05 2014-05-19 Toshiba Corp 面光源装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112805502A (zh) * 2018-10-31 2021-05-14 欧姆龙株式会社 显示装置
CN112805502B (zh) * 2018-10-31 2024-01-19 欧姆龙株式会社 显示装置
CN111915989A (zh) * 2019-05-10 2020-11-10 苹果公司 具有增强的显示区域的电子设备
CN111915989B (zh) * 2019-05-10 2023-05-23 苹果公司 具有增强的显示区域的电子设备
CN115016177A (zh) * 2022-06-27 2022-09-06 惠科股份有限公司 显示装置和背光模组
CN115016177B (zh) * 2022-06-27 2023-04-21 惠科股份有限公司 显示装置和背光模组

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JP6715457B2 (ja) 2020-07-01

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