WO2018139432A1 - Display device - Google Patents

Display device Download PDF

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Publication number
WO2018139432A1
WO2018139432A1 PCT/JP2018/001908 JP2018001908W WO2018139432A1 WO 2018139432 A1 WO2018139432 A1 WO 2018139432A1 JP 2018001908 W JP2018001908 W JP 2018001908W WO 2018139432 A1 WO2018139432 A1 WO 2018139432A1
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WO
WIPO (PCT)
Prior art keywords
light
light shielding
shielding layer
liquid crystal
display panel
Prior art date
Application number
PCT/JP2018/001908
Other languages
French (fr)
Japanese (ja)
Inventor
裕司 岡田
Original Assignee
日本精機株式会社
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 日本精機株式会社 filed Critical 日本精機株式会社
Publication of WO2018139432A1 publication Critical patent/WO2018139432A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • 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 display device including a display panel (liquid crystal display panel or the like) for displaying an image.
  • a display panel liquid crystal display panel or the like
  • Such a display device has a structure in which the liquid crystal display 310 is bonded to the cover panel 320 with a translucent adhesive 380, and an air layer between the cover panel 320 and the liquid crystal display 310 is eliminated, and the liquid crystal display is displayed. External light reflection at the interface between 310 and the air layer and at the interface between the cover panel 320 and the air layer is reduced, and the image quality of the display device is improved.
  • the cover panel 320 includes a translucent substrate 321 and a light shielding portion 325 formed on the rear surface of the translucent substrate 321 (see FIG. 9).
  • the light shielding part 325 of the cover panel 320 is made of a black print layer, and has a window part 325d for visually recognizing the image of the liquid crystal display 310. Note that bonding the liquid crystal display 310 to the cover panel 320 may be referred to as “opti-carbonization”.
  • the light shielding portion 225 of the cover panel 220 has two printed layers (a first light shielding layer 225a and a second light shielding layer 225b) to prevent light leakage from a minute hole called a pinhole.
  • the gap S may be formed in the vicinity of the window portion 325d due to the step formed by forming the light-shielding portion 325 including the two printed layers, and the gap S may be visible.
  • the translucent adhesive 280 may be peeled off from the gap S generated in the vicinity of the window portion 325d.
  • the display panels 51 and 111 for displaying images, the translucent substrates 44 and 121 to which the display panels 51 and 111 are bonded by the translucent adhesives 80 and 180, and the images are visually recognized.
  • the light shielding portions 45 and 125 are provided on the light transmissive substrates 44 and 121, and the light shielding portions 45 and 125 are provided with the light transmissive adhesive.
  • 125a overlaps the translucent adhesives 80, 180 in front view
  • the second light shielding layers 45b, 125b do not overlap the translucent adhesives 80, 180 in front view.
  • the present invention is characterized in that the light shielding part 125 includes a warning display part 125e.
  • the present invention is characterized in that the warning display part 125e is composed of either one of the first light shielding layer 125a and the second light shielding layer 125b.
  • Sectional drawing which shows 1st embodiment of this invention The front view which shows embodiment same as the above.
  • the principal part expanded sectional view which shows embodiment same as the above.
  • Sectional drawing which shows embodiment same as the above.
  • the principal part expanded sectional view which shows embodiment same as the above.
  • the expanded sectional view which shows embodiment same as the above.
  • the principal part expanded sectional view which shows other embodiment of this invention.
  • the vehicle display device includes a pointer 10, a circuit board 20, a case body 30, a display plate 40, a liquid crystal display 50, and a rear cover 60.
  • the pointer 10 includes an instruction portion 11 made of a translucent resin, a pointer cap 12 made of an opaque resin, a boss portion 13 into which the rotating shaft 22a is press-fitted, and a pointer seat 14 on which the indication portion 11 is placed.
  • the indicator unit 41 is instructed by the instruction unit 11.
  • the boss portion 13 and the pointer seat 14 of the pointer 10 are integrally formed of white resin.
  • the illumination light emitted from the light emitting element 25 and having passed through the through hole 20 c is reflected by the boss portion 13 and the pointer seat 14 in the vicinity of the through hole 40 c of the display panel 40.
  • the circuit board 20 includes a board body 21, a pointer driving unit 22 mounted on the rear surface side of the board body 21, and light emitting elements 24 and 25 mounted on the surface side of the board body 21. 40 is arranged on the rear side.
  • the substrate body 21 is made of a hard printed circuit board in which a flat glass epoxy base material is provided with a driving circuit for driving the pointer driving unit 22 and a light emitting circuit for causing the light emitting elements 24 and 25 to emit light.
  • the drive circuit and the light emitting circuit are each composed of a wiring pattern, a resistor, a capacitor and the like.
  • the drive circuit drives the pointer drive unit 22 based on a control signal supplied from the control unit.
  • the light emitting circuit causes the light emitting elements 24 and 25 to emit light based on a control signal supplied from the control unit.
  • the pointer driving unit 22 includes a movable magnet type driving device, a stepping motor, and the like.
  • the rotation shaft 22 a of the pointer driving unit 22 is inserted into a through hole 21 a formed in the substrate body 21, and the pointer 10 is attached to the rotation shaft 22 a of the pointer driving unit 22.
  • the boss portion 13 of the pointer 10 is inserted into a through hole 40 c formed in the display board 40.
  • the through hole 40c of the display board 40 is formed at a location corresponding to the rotating shaft 22a of the pointer driving unit 22 and has a circular shape when viewed from the front.
  • the drive circuit of the substrate body 21 drives the pointer drive unit 22 based on a control signal supplied from the control unit.
  • the rotation shaft 22a of the pointer driving unit 22 rotates at a rotation angle corresponding to the control signal. Accordingly, the pointer 10 rotates at a predetermined rotation angle corresponding to the vehicle speed, and the instruction unit 11 of the pointer 10 instructs an index unit 41 described later.
  • the light emitting elements 24 and 25 are each composed of one or more light emitting diodes or the like.
  • the light emitting element 24 illuminates and transmits the display panel 40.
  • the light emitting element 25 shines the instruction unit 11 of the pointer 10.
  • the light emitting elements 24 and 25 are driven based on a control signal supplied from the control unit, and are turned on / off according to an illumination switch or the like operated by a vehicle driver.
  • the case body 30 is made of a white synthetic resin (for example, polypropylene), and the circuit board 20 is fixed to the case body 30.
  • the case body 30 has a vertical part 31, an inclined part 32, a parallel part 33, an inclined part 34, and a vertical part 35.
  • the vertical portion 31 of the case body 30 has a cylindrical shape, the front end is in contact with the rear surface of the display panel 40, and the rear end is in contact with the front surface of the circuit board 20.
  • the vertical portion 31 of the case body 30 is a light shielding wall that prevents the illumination light emitted from the light emitting element 24 and the illumination light emitted from the light emitting element 25 from being mixed.
  • the inclined portion 32 of the case body 30 has a shape that spreads in an inverted conical shape from the outer peripheral surface of the vertical portion 31.
  • the inclined portion 32 of the case body 30 reflects the illumination light emitted from the light emitting element 24 toward the parallel portion 33 and the inclined portion 34.
  • the parallel part 33 of the case body 30 has a flat plate shape parallel to the display panel 40.
  • the inclined portion 34 of the case body 30 has an inverted conical shape and is continuous with the outer peripheral end of the parallel portion 33.
  • the inclined portion 34 of the case body 30 reflects the illumination light emitted from the light emitting element 24 toward the display plate 40.
  • the vertical portion 35 of the case body 30 has a cylindrical shape, and the rear end is in contact with the front surface of the circuit board 20.
  • the vertical portion 35 of the case body 30 is continuous with the outer peripheral end of the inclined portion 34.
  • the vertical portion 35 of the case body 30 has a front end in contact with the rear surface of the display board 40 and a rear end in contact with the front surface of the circuit board 20.
  • the display board 40 has an indicator portion 41 and a number portion 43 which are openings of a light shielding portion 45 described later.
  • the indicator part 41 of the display board 40 is a scale arranged in the vicinity of the number part 43.
  • the indicator portion 41 of the display panel 40 is arranged in an arc shape with the through hole 40c as the center, and is transmitted and illuminated by the illumination light emitted from the light emitting element 24.
  • the display board 40 has a translucent substrate 44, a light shielding part 45, and a protective layer 46.
  • the translucent substrate 44 of the display panel 40 is made of flat acrylic (PMMA).
  • the light shielding portion 45 of the display board 40 is made of a black print layer, and is formed on the rear surface of the translucent substrate 44.
  • the light shielding portion 45 of the display panel 40 includes a first light shielding layer 45a, a second light shielding layer 45b, and a third light shielding layer 45c.
  • the first light shielding layer 45 a is formed on the rear surface of the translucent substrate 44.
  • the second light shielding layer 45b is formed on the rear surface of the first light shielding layer 45a.
  • the third light shielding layer 45c is formed on the rear surface of the second light shielding layer 45b.
  • the first light shielding layer 45a has a rectangular window portion 45d through which the image of the liquid crystal display 50 is seen.
  • the first light shielding layer 45 a overlaps the translucent adhesive 80 with a predetermined width W1 when viewed from the front, and is in contact with the translucent adhesive 80.
  • the second light shielding layer 45 b and the third light shielding layer 45 c do not overlap the light-transmitting adhesive 80 and do not contact the light-transmitting adhesive 80 when viewed from the front.
  • the protective layer 46 of the display panel 40 is made of a transparent printing layer and is formed on the front surface of the translucent substrate 44.
  • the “front view” means viewing from the vertical direction of the liquid crystal display panel 51, that is, the vertical direction of FIGS.
  • the liquid crystal display 50 is disposed between two pointer-type meters (speedometer and tachometer).
  • the liquid crystal display 50 includes a liquid crystal display panel 51, a backlight unit 52, a light diffusion plate 53, and a case body 54.
  • the liquid crystal display panel 51 has a front-side polarizing member 51b and a rear-side polarizing member 51c attached to a TFT color LCD cell 51a, and displays vehicle information such as an accumulated travel distance as an image.
  • the backlight unit 52 is disposed behind the liquid crystal display panel 51 and illuminates and transmits the liquid crystal display panel 51.
  • the light diffusion plate 53 is disposed between the liquid crystal display panel 51 and the backlight unit 52 and diffuses the illumination light emitted from the backlight unit 52.
  • the case body 54 is made of a metal bottomed casing and houses the liquid crystal display panel 51, the backlight unit 52, and the light diffusion plate 53.
  • the liquid crystal display panel 51 of the liquid crystal display 50 is in close contact with the rear surface of the display plate 40 with a translucent adhesive 80.
  • the translucent adhesive 80 is, for example, a colorless and transparent sheet-like adhesive, and is formed so as to cover the window portion 45d.
  • the translucent adhesive 80 has a refractive index of 1.4 to 1.55, for example.
  • the translucent adhesive 80 covers the window portion 45d of the light shielding portion 45 and overlaps the light shielding layer 45a.
  • the translucent adhesive 80 does not overlap the light shielding layers 45b and 45c.
  • the vehicle display device includes a liquid crystal display 110, a cover panel 120, an upper case 130, a circuit board 140, a lower case 150, and a light box 160.
  • the liquid crystal display 110 includes a liquid crystal display panel 111, a backlight unit 112, a light diffusion plate 113, and a case body 114.
  • the liquid crystal display panel 111 is obtained by attaching a front polarizing member 111b and a rear polarizing member 111c to a TFT color LCD cell 111a, and displays vehicle information such as vehicle speed as an image.
  • the backlight unit 112 is disposed behind the liquid crystal display panel 111 and illuminates and transmits the liquid crystal display panel 111.
  • the light diffusion plate 113 is disposed between the liquid crystal display panel 111 and the backlight unit 112 and diffuses illumination light emitted from the backlight unit 112.
  • the case body 114 is made of a metal bottomed casing, and houses the liquid crystal display panel 111, the backlight unit 112, and the light diffusion plate 113.
  • the liquid crystal display panel 111 is in close contact with the rear surface of the cover panel 120 with a translucent adhesive 180.
  • the translucent adhesive 180 is, for example, a colorless and transparent sheet-like adhesive, and is formed so as to cover the window portion 125d.
  • the translucent adhesive 180 has a refractive index of 1.4 to 1.55, for example.
  • the cover panel 120 includes a translucent substrate 121, a low reflection layer 122, and a light shielding portion 125.
  • the translucent substrate 121 of the cover panel 120 is made of flat plate acrylic (PMMA) and has a rectangular shape when viewed from the front.
  • the low reflection layer 122 of the cover panel 120 is formed on the front surface of the front protective layer 122.
  • the low reflection layer 122 of the cover panel 120 is made of a thin film laminate such as silicone or magnesium fluoride, and reduces reflection by utilizing light interference.
  • the light shielding portion 125 of the cover panel 120 is made of a black print layer and is formed on the rear surface of the translucent substrate 121.
  • the light shielding portion 125 of the cover panel 120 includes a first light shielding layer 125a, a second light shielding layer 125b, and a third light shielding layer 125c.
  • the first light shielding layer 125 a is formed on the rear surface of the translucent substrate 121.
  • the second light shielding layer 125b is formed on the rear surface of the first light shielding layer 125a.
  • the third light shielding layer 125c is formed on the rear surface of the second light shielding layer 125b.
  • the first light-shielding layer 125a has a rectangular window 125d through which an image of the liquid crystal display 110 is seen, and a plurality of warning display parts 125e.
  • the warning display part 125e consists of warning marks formed by the first light shielding layer 125a.
  • the first light shielding layer 125a overlaps the translucent adhesive 180 with a predetermined width W2 in front view and is in contact with the translucent adhesive 180.
  • the second light shielding layer 125 b and the third light shielding layer 125 c do not overlap the light-transmitting adhesive 80 and do not contact the light-transmitting adhesive 180 when viewed from the front.
  • the upper case 130 is made of a resin such as AES, and covers the outer periphery of the cover panel 120 so as to cover the side end surface of the cover panel 120.
  • a liquid crystal display 110 is accommodated in the space inside the upper case 130.
  • the upper case 130 has a support part 131 protruding inward, and the support part 131 supports the cover panel 120.
  • the circuit board 140 is formed by forming a wiring pattern made of copper foil on a base material made of glass epoxy resin, and is mounted with a microcomputer 190 that drives the liquid crystal display 110 and a light emitting element 141.
  • the liquid crystal display 110 is electrically connected to the circuit board 140 by a flexible wiring member (not shown).
  • the light emitting element 141 is disposed behind the warning display unit 125e and illuminates the warning display unit 125e.
  • the lower case 150 is made of a resin such as AES or PP.
  • the lower case 150 is fixed to the rear side of the upper case 130.
  • the light box 160 has a cylindrical shape surrounding the light emitting element 141, and forms an illumination chamber that guides light emitted from the light emitting element 141 to the warning display portion 125e.
  • the liquid crystal displays (display panels) 50 and 110 for displaying images and the liquid crystal displays (display panels) 50 and 110 are bonded by translucent adhesives 80 and 180.
  • a vehicular display device including optical substrates 44 and 121 and light shielding portions 45 and 125 provided on the transparent substrates 44 and 121 having window portions 45d and 125d for visually recognizing images.
  • the light shielding portions 45 and 125 include first light shielding layers 45a and 125a that are in contact with the light transmissive adhesives 80 and 180, and second light shielding layers 45b and 125b that are not in contact with the light transmissive adhesives 80 and 180.
  • the first light shielding layers 45a and 125a overlap the light transmitting adhesives 80 and 180 in a front view, and the second light shielding layers 45b and 125b are formed on the light transmitting adhesives 80 and 180. It is the one that does not overlap in front view, The light layers 45a and 125a are brought into contact with the translucent adhesives 80 and 180, and the second light shielding layers 45b and 125b are not brought into contact with the translucent adhesives 80 and 180. , 125d is less likely to cause a gap.
  • the present invention is not limited to the first and second embodiments, and various modifications are possible.
  • the second light shielding layer 125b is formed on the rear surface of the light-transmitting substrate 121, and the first light shielding layer 125a is formed so as to cover the second light shielding layer 125b. It may be formed.
  • the display panel may be an organic EL (Electro Luminescence) display panel.
  • liquid crystal display panel (display panel) 80 Translucent adhesive 111 Liquid crystal display panel (display panel) 180 light-transmitting adhesive 121 light-transmitting substrate 125 light-blocking portion 125d light-transmitting substrate 125a first light-blocking layer 125b second light-blocking layer 125e warning display portion 141 light-emitting element

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
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Abstract

Provided is a display device which has less possibility of generating a gap in the vicinity of a window part of a light blocking part. According to the present invention, a display panel 51 displays images; a light transmitting substrate 44 is bonded to the display panel 51 by means of a light transmitting adhesive 80; the light transmitting substrate 44 is provided with a light blocking part 45 that has a window part 45d for visual contact with the images; the light blocking part 45 comprises a first light blocking layer 45a that is in contact with the light transmitting adhesive 80 and a second light blocking layer 45b that is not in contact with the light transmitting adhesive 80; and a light blocking part 125 has a warning display part 125e. This display device is additionally provided with a light emitting element 141 that performs transmitted illumination of the warning display part 125e.

Description

表示装置Display device
　本発明は、画像を表示する表示パネル（液晶表示パネル等）を備えた表示装置に関するものである。 The present invention relates to a display device including a display panel (liquid crystal display panel or the like) for displaying an image.
　従来より、液晶表示器３１０を保護するカバーパネル３２０を備えた表示装置が種々提案されており、例えば特許文献１に開示されている。斯かる表示装置は、カバーパネル３２０に液晶表示器３１０を透光性接着剤３８０で接着した構造になっており、カバーパネル３２０と液晶表示器３１０との間の空気層がなくなり、液晶表示器３１０と空気層との界面、及び、カバーパネル３２０と空気層との界面での外光反射が減少して、表示装置の画質が向上する。 Conventionally, various display devices including a cover panel 320 that protects the liquid crystal display 310 have been proposed, and for example, disclosed in Patent Document 1. Such a display device has a structure in which the liquid crystal display 310 is bonded to the cover panel 320 with a translucent adhesive 380, and an air layer between the cover panel 320 and the liquid crystal display 310 is eliminated, and the liquid crystal display is displayed. External light reflection at the interface between 310 and the air layer and at the interface between the cover panel 320 and the air layer is reduced, and the image quality of the display device is improved.
　カバーパネル３２０は、透光性基板３２１と、この透光性基板３２１の後面に形成された遮光部３２５とを有している（図９参照）。カバーパネル３２０の遮光部３２５は、黒色印刷層からなるものであり、液晶表示器３１０の画像を視認するための窓部３２５ｄを有している。なお、カバーパネル３２０に液晶表示器３１０を接着することは、オプティカルボンディングと称されることもある。 The cover panel 320 includes a translucent substrate 321 and a light shielding portion 325 formed on the rear surface of the translucent substrate 321 (see FIG. 9). The light shielding part 325 of the cover panel 320 is made of a black print layer, and has a window part 325d for visually recognizing the image of the liquid crystal display 310. Note that bonding the liquid crystal display 310 to the cover panel 320 may be referred to as “opti-carbonization”.
特開２０１５－３１５９２号公報JP 2015-31592 A
　しかしながら、窓部３２５ｄの近傍に隙間Ｓが生じることがあり、この隙間Ｓが視認され、液晶表示器２１０の画面が見難くなる虞があった。つまり、カバーパネル２２０の遮光部２２５は、ピンホールと称される微小な孔から光漏れすることを防ぐため、２層の印刷層（第一の遮光層２２５ａ及び第二の遮光層２２５ｂ）を有しており、この２層の印刷層からなる遮光部３２５を形成したことによる段差によって、窓部３２５ｄの近傍に隙間Ｓが生じることがあり、この隙間Ｓが見えてしまうことがあった。また、窓部３２５ｄの近傍に生じた隙間Ｓから透光性接着剤２８０が剥離する虞があった。 However, there may be a gap S in the vicinity of the window portion 325d. This gap S may be visually recognized, making it difficult to see the screen of the liquid crystal display 210. That is, the light shielding portion 225 of the cover panel 220 has two printed layers (a first light shielding layer 225a and a second light shielding layer 225b) to prevent light leakage from a minute hole called a pinhole. The gap S may be formed in the vicinity of the window portion 325d due to the step formed by forming the light-shielding portion 325 including the two printed layers, and the gap S may be visible. Further, the translucent adhesive 280 may be peeled off from the gap S generated in the vicinity of the window portion 325d.
　本発明は、画像を表示する表示パネル５１，１１１と、前記表示パネル５１，１１１が透光性接着剤８０，１８０にて接着される透光性基板４４，１２１と、前記画像を視認するための窓部４５ｄ，１２５ｄを有し前記透光性基板４４，１２１に設けられた遮光部４５，１２５と、を備えた表示装置であって、前記遮光部４５，１２５は、前記透光性接着剤８０，１８０に接触する第一の遮光層４５ａ，１２５ａと、前記透光性接着剤８０，１８０に接触しない第二の遮光層４５ｂ，１２５ｂと、を有し、前記第一の遮光層４５ａ，１２５ａは、前記透光接着剤８０，１８０に正面視で重なっていると共に、前記第二の遮光層４５ｂ，１２５ｂは、前記透光接着剤８０，１８０に正面視で重なっていないことを特徴とする。 In the present invention, the display panels 51 and 111 for displaying images, the translucent substrates 44 and 121 to which the display panels 51 and 111 are bonded by the translucent adhesives 80 and 180, and the images are visually recognized. The light shielding portions 45 and 125 are provided on the light transmissive substrates 44 and 121, and the light shielding portions 45 and 125 are provided with the light transmissive adhesive. First light- shielding layers 45a and 125a that contact the agents 80 and 180, and second light- shielding layers 45b and 125b that do not contact the translucent adhesives 80 and 180, and the first light-shielding layer 45a. , 125a overlaps the translucent adhesives 80, 180 in front view, and the second light shielding layers 45b, 125b do not overlap the translucent adhesives 80, 180 in front view. And
　また、本発明は、前記遮光部１２５は、警告表示部１２５ｅを有することを特徴とする。 Further, the present invention is characterized in that the light shielding part 125 includes a warning display part 125e.
　また、本発明は、前記警告表示部１２５ｅは、前記第一の遮光層１２５ａまたは前記第二の遮光層１２５ｂの何れか一方の遮光層からなることを特徴とする。 Further, the present invention is characterized in that the warning display part 125e is composed of either one of the first light shielding layer 125a and the second light shielding layer 125b.
　第一の遮光層を透光性接着剤に接触させ、第二の遮光層を透光性接着剤に接触させないことにより、遮光部の窓部の近傍に隙間が生じる虞が少ない。 By causing the first light-shielding layer to contact the light-transmitting adhesive and not causing the second light-shielding layer to contact the light-transmitting adhesive, there is little possibility that a gap will occur in the vicinity of the window portion of the light-shielding portion.
本発明の第一実施形態を示す断面図。Sectional drawing which shows 1st embodiment of this invention. 同上実施形態を示す正面図。The front view which shows embodiment same as the above. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 本発明の第二実施形態を示す正面図。The front view which shows 2nd embodiment of this invention. 同上実施形態を示す断面図。Sectional drawing which shows embodiment same as the above. 同上実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows embodiment same as the above. 同上実施形態を示す拡大断面図。The expanded sectional view which shows embodiment same as the above. 本発明の他の実施形態を示す要部拡大断面図。The principal part expanded sectional view which shows other embodiment of this invention. 従来例を示す断面図。Sectional drawing which shows a prior art example.
　以下、添付図面に基づいて、本発明の一実施形態を説明する。図１乃至図３は、第一実施形態を示す図である。車両用表示装置は、指針１０と、回路基板２０と、ケース体３０と、表示板４０と、液晶表示器５０と、後面カバー６０と、を備えている。 Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. 1 to 3 are diagrams showing a first embodiment. The vehicle display device includes a pointer 10, a circuit board 20, a case body 30, a display plate 40, a liquid crystal display 50, and a rear cover 60.
　指針１０は、透光性樹脂からなる指示部１１と、不透明な樹脂からなる指針キャップ１２と、回動軸２２ａが圧入されるボス部１３と、指示部１１を載置する指針座１４とを有しており、後述する指標部４１を指示部１１にて指示する。指針１０のボス部１３及び指針座１４は、白色樹脂にて一体形成されている。発光素子２５から発せられ、貫通孔２０ｃを通過した照明光は、ボス部１３及び指針座１４によって表示板４０の貫通孔４０ｃの近傍に反射される。回路基板２０は、基板本体２１と、基板本体２１の後面側に実装された指針駆動部２２と、基板本体２１の表面側に実装された発光素子２４，２５と、を備えており、表示板４０の後側に配置されている。 The pointer 10 includes an instruction portion 11 made of a translucent resin, a pointer cap 12 made of an opaque resin, a boss portion 13 into which the rotating shaft 22a is press-fitted, and a pointer seat 14 on which the indication portion 11 is placed. The indicator unit 41 is instructed by the instruction unit 11. The boss portion 13 and the pointer seat 14 of the pointer 10 are integrally formed of white resin. The illumination light emitted from the light emitting element 25 and having passed through the through hole 20 c is reflected by the boss portion 13 and the pointer seat 14 in the vicinity of the through hole 40 c of the display panel 40. The circuit board 20 includes a board body 21, a pointer driving unit 22 mounted on the rear surface side of the board body 21, and light emitting elements 24 and 25 mounted on the surface side of the board body 21. 40 is arranged on the rear side.
　基板本体２１は、平板状のガラスエポキシ系基材に、指針駆動部２２を駆動させる駆動回路、発光素子２４，２５を発光させる発光回路等を形成した硬質プリント基板からなる。駆動回路及び発光回路は、夫々、配線パターン，抵抗，コンデンサ等によって構成される。駆動回路は、制御部から供給される制御信号に基づいて、指針駆動部２２を駆動する。発光回路は、制御部から供給される制御信号に基づいて、発光素子２４，２５を発光させる。 The substrate body 21 is made of a hard printed circuit board in which a flat glass epoxy base material is provided with a driving circuit for driving the pointer driving unit 22 and a light emitting circuit for causing the light emitting elements 24 and 25 to emit light. The drive circuit and the light emitting circuit are each composed of a wiring pattern, a resistor, a capacitor and the like. The drive circuit drives the pointer drive unit 22 based on a control signal supplied from the control unit. The light emitting circuit causes the light emitting elements 24 and 25 to emit light based on a control signal supplied from the control unit.
　指針駆動部２２は、可動磁石式駆動装置，ステッピングモータ等からなるものである。指針駆動部２２の回動軸２２ａは、基板本体２１に形成された貫通孔２１ａに挿入され、指針駆動部２２の回動軸２２ａには、指針１０が取り付けられる。指針１０のボス部１３は、表示板４０に形成された貫通孔４０ｃに挿入される。表示板４０の貫通孔４０ｃは、指針駆動部２２の回動軸２２ａに対応する個所に形成されており、正面視で円形状になっている。 The pointer driving unit 22 includes a movable magnet type driving device, a stepping motor, and the like. The rotation shaft 22 a of the pointer driving unit 22 is inserted into a through hole 21 a formed in the substrate body 21, and the pointer 10 is attached to the rotation shaft 22 a of the pointer driving unit 22. The boss portion 13 of the pointer 10 is inserted into a through hole 40 c formed in the display board 40. The through hole 40c of the display board 40 is formed at a location corresponding to the rotating shaft 22a of the pointer driving unit 22 and has a circular shape when viewed from the front.
　基板本体２１の駆動回路は、制御部から供給される制御信号に基づいて、指針駆動部２２を駆動する。指針駆動部２２の回動軸２２ａは、制御信号に応じた回転角度で回動する。これによって、指針１０が車両速度に応じた所定の回転角度で回転し、指針１０の指示部１１が後述する指標部４１を指示する。 The drive circuit of the substrate body 21 drives the pointer drive unit 22 based on a control signal supplied from the control unit. The rotation shaft 22a of the pointer driving unit 22 rotates at a rotation angle corresponding to the control signal. Accordingly, the pointer 10 rotates at a predetermined rotation angle corresponding to the vehicle speed, and the instruction unit 11 of the pointer 10 instructs an index unit 41 described later.
　発光素子２４，２５は、夫々、１個以上の発光ダイオード等によって構成される。発光素子２４は、表示板４０を透過照明する。発光素子２５は、指針１０の指示部１１を光輝させる。発光素子２４，２５は、制御部から供給される制御信号に基づいて駆動され、車両運転者によって操作されるイルミネーションスイッチ等に応じてオン／オフされる。 The light emitting elements 24 and 25 are each composed of one or more light emitting diodes or the like. The light emitting element 24 illuminates and transmits the display panel 40. The light emitting element 25 shines the instruction unit 11 of the pointer 10. The light emitting elements 24 and 25 are driven based on a control signal supplied from the control unit, and are turned on / off according to an illumination switch or the like operated by a vehicle driver.
　ケース体３０は白色の合成樹脂（例えば、ポリプロピレン）からなり、このケース体３０に回路基板２０が固定されている。ケース体３０は、垂直部３１，傾斜部３２，平行部３３，傾斜部３４，垂直部３５を有している。ケース体３０の垂直部３１は、円筒形状になっており、前端が表示板４０の後面に当接し、後端が回路基板２０の前面に当接している。ケース体３０の垂直部３１は、発光素子２４が発する照明光と、発光素子２５が発する照明光とが混合されることを防ぐ遮光壁になっている。 The case body 30 is made of a white synthetic resin (for example, polypropylene), and the circuit board 20 is fixed to the case body 30. The case body 30 has a vertical part 31, an inclined part 32, a parallel part 33, an inclined part 34, and a vertical part 35. The vertical portion 31 of the case body 30 has a cylindrical shape, the front end is in contact with the rear surface of the display panel 40, and the rear end is in contact with the front surface of the circuit board 20. The vertical portion 31 of the case body 30 is a light shielding wall that prevents the illumination light emitted from the light emitting element 24 and the illumination light emitted from the light emitting element 25 from being mixed.
　ケース体３０の傾斜部３２は、垂直部３１の外周面から逆円錐状に広がる形状になっている。ケース体３０の傾斜部３２は、発光素子２４が発した照明光を平行部３３，傾斜部３４に向けて反射させる。ケース体３０の平行部３３は、表示板４０と平行な平板形状になっている。ケース体３０の傾斜部３４は、逆円錐状になっており、平行部３３の外周端に連なっている。ケース体３０の傾斜部３４は、発光素子２４が発した照明光を表示板４０に向けて反射させる。ケース体３０の垂直部３５は、円筒形状になっており、後端が回路基板２０の前面に当接している。ケース体３０の垂直部３５は、傾斜部３４の外周端に連なっている。ケース体３０の垂直部３５は、前端が表示板４０の後面に当接し、後端が回路基板２０の前面に当接している。 The inclined portion 32 of the case body 30 has a shape that spreads in an inverted conical shape from the outer peripheral surface of the vertical portion 31. The inclined portion 32 of the case body 30 reflects the illumination light emitted from the light emitting element 24 toward the parallel portion 33 and the inclined portion 34. The parallel part 33 of the case body 30 has a flat plate shape parallel to the display panel 40. The inclined portion 34 of the case body 30 has an inverted conical shape and is continuous with the outer peripheral end of the parallel portion 33. The inclined portion 34 of the case body 30 reflects the illumination light emitted from the light emitting element 24 toward the display plate 40. The vertical portion 35 of the case body 30 has a cylindrical shape, and the rear end is in contact with the front surface of the circuit board 20. The vertical portion 35 of the case body 30 is continuous with the outer peripheral end of the inclined portion 34. The vertical portion 35 of the case body 30 has a front end in contact with the rear surface of the display board 40 and a rear end in contact with the front surface of the circuit board 20.
　表示板４０は、後述する遮光部４５の開口部分からなる指標部４１及び数字部４３を有している。表示板４０の指標部４１は、数字部４３の近傍に配置された目盛りである。表示板４０の指標部４１は、貫通孔４０ｃを中心とした円弧状に配置されており、発光素子２４が発した照明光によって透過照明される。 The display board 40 has an indicator portion 41 and a number portion 43 which are openings of a light shielding portion 45 described later. The indicator part 41 of the display board 40 is a scale arranged in the vicinity of the number part 43. The indicator portion 41 of the display panel 40 is arranged in an arc shape with the through hole 40c as the center, and is transmitted and illuminated by the illumination light emitted from the light emitting element 24.
　表示板４０は、透光性基板４４，遮光部４５，保護層４６を有している。表示板４０の透光性基板４４は、平板形状のアクリル（ＰＭＭＡ）からなるものである。表示板４０の遮光部４５は、黒色印刷層からなるものであり、透光性基板４４の後面に形成されている。表示板４０の遮光部４５は、第一の遮光層４５ａ，第二の遮光層４５ｂ，第三の遮光層４５ｃを有している。第一の遮光層４５ａは、透光性基板４４の後面に形成されている。第二の遮光層４５ｂは、第一の遮光層４５ａの後面に形成されている。第三の遮光層４５ｃは、第二の遮光層４５ｂの後面に形成されている。 The display board 40 has a translucent substrate 44, a light shielding part 45, and a protective layer 46. The translucent substrate 44 of the display panel 40 is made of flat acrylic (PMMA). The light shielding portion 45 of the display board 40 is made of a black print layer, and is formed on the rear surface of the translucent substrate 44. The light shielding portion 45 of the display panel 40 includes a first light shielding layer 45a, a second light shielding layer 45b, and a third light shielding layer 45c. The first light shielding layer 45 a is formed on the rear surface of the translucent substrate 44. The second light shielding layer 45b is formed on the rear surface of the first light shielding layer 45a. The third light shielding layer 45c is formed on the rear surface of the second light shielding layer 45b.
　第一の遮光層４５ａは、液晶表示器５０の画像を透視する矩形の窓部４５ｄを有している。第一の遮光層４５ａは、正面視で透光性接着剤８０に所定幅Ｗ１で重なっており、透光性接着剤８０に接触している。第二の遮光層４５ｂ，第三の遮光層４５ｃは、正面視で透光性接着剤８０に重なっておらず、透光性接着剤８０に接触していない。表示板４０の保護層４６は、透明印刷層からなるものであり、透光性基板４４の前面に形成されている。なお、「正面視」とは、液晶表示パネル５１の垂直方向、即ち、図１，図３の縦方向から見ることである。 The first light shielding layer 45a has a rectangular window portion 45d through which the image of the liquid crystal display 50 is seen. The first light shielding layer 45 a overlaps the translucent adhesive 80 with a predetermined width W1 when viewed from the front, and is in contact with the translucent adhesive 80. The second light shielding layer 45 b and the third light shielding layer 45 c do not overlap the light-transmitting adhesive 80 and do not contact the light-transmitting adhesive 80 when viewed from the front. The protective layer 46 of the display panel 40 is made of a transparent printing layer and is formed on the front surface of the translucent substrate 44. The “front view” means viewing from the vertical direction of the liquid crystal display panel 51, that is, the vertical direction of FIGS.
　液晶表示器５０は、２個の指針式計器（速度計及び回転計）の間に配置されている。液晶表示器５０は、液晶表示パネル５１，バックライトユニット５２，光拡散板５３，ケース体５４を備えている。液晶表示パネル５１は、ＴＦＴ型カラーＬＣＤセル５１ａに前側偏光部材５１ｂ，後側偏光部材５１ｃを貼着したものであり、積算走行距離等の車両情報を画像にて表示する。バックライトユニット５２は、液晶表示パネル５１の後方に配設されており、液晶表示パネル５１を透過照明する。光拡散板５３は、液晶表示パネル５１とバックライトユニット５２の間に配設されており、バックライトユニット５２から発せられた照明光を拡散させる。ケース体５４は、金属製の有底筺体からなり、液晶表示パネル５１，バックライトユニット５２，光拡散板５３を収納する。 The liquid crystal display 50 is disposed between two pointer-type meters (speedometer and tachometer). The liquid crystal display 50 includes a liquid crystal display panel 51, a backlight unit 52, a light diffusion plate 53, and a case body 54. The liquid crystal display panel 51 has a front-side polarizing member 51b and a rear-side polarizing member 51c attached to a TFT color LCD cell 51a, and displays vehicle information such as an accumulated travel distance as an image. The backlight unit 52 is disposed behind the liquid crystal display panel 51 and illuminates and transmits the liquid crystal display panel 51. The light diffusion plate 53 is disposed between the liquid crystal display panel 51 and the backlight unit 52 and diffuses the illumination light emitted from the backlight unit 52. The case body 54 is made of a metal bottomed casing and houses the liquid crystal display panel 51, the backlight unit 52, and the light diffusion plate 53.
　液晶表示器５０の液晶表示パネル５１は、透光性接着剤８０にて、表示板４０の後面に密着されている。透光性接着剤８０は、例えば、無色透明なシート状の接着剤であり、窓部４５ｄを覆うように形成される。透光性接着剤８０は、例えば、１．４～１．５５の屈折率を有する。透光性接着剤８０は、遮光部４５の窓部４５ｄを覆っており、遮光層４５ａに重なっている。透光性接着剤８０は、遮光層４５ｂ，４５ｃに重なっていない。 The liquid crystal display panel 51 of the liquid crystal display 50 is in close contact with the rear surface of the display plate 40 with a translucent adhesive 80. The translucent adhesive 80 is, for example, a colorless and transparent sheet-like adhesive, and is formed so as to cover the window portion 45d. The translucent adhesive 80 has a refractive index of 1.4 to 1.55, for example. The translucent adhesive 80 covers the window portion 45d of the light shielding portion 45 and overlaps the light shielding layer 45a. The translucent adhesive 80 does not overlap the light shielding layers 45b and 45c.
　図４乃至図７は、第二実施形態を示すものである。車両用表示装置は、液晶表示器１１０，カバーパネル１２０，上ケース１３０，回路基板１４０，下ケース１５０，ライトボックス１６０を備えている。 4 to 7 show a second embodiment. The vehicle display device includes a liquid crystal display 110, a cover panel 120, an upper case 130, a circuit board 140, a lower case 150, and a light box 160.
　液晶表示器１１０は、液晶表示パネル１１１，バックライトユニット１１２，光拡散板１１３，ケース体１１４を備えている。液晶表示パネル１１１は、ＴＦＴ型カラーＬＣＤセル１１１ａに前側偏光部材１１１ｂ，後側偏光部材１１１ｃを貼着したものであり、車両速度等の車両情報を画像にて表示する。バックライトユニット１１２は、液晶表示パネル１１１の後方に配設されており、液晶表示パネル１１１を透過照明する。光拡散板１１３は、液晶表示パネル１１１とバックライトユニット１１２の間に配設されており、バックライトユニット１１２から発せられた照明光を拡散させる。ケース体１１４は、金属製の有底筺体からなり、液晶表示パネル１１１，バックライトユニット１１２，光拡散板１１３を収納する。 The liquid crystal display 110 includes a liquid crystal display panel 111, a backlight unit 112, a light diffusion plate 113, and a case body 114. The liquid crystal display panel 111 is obtained by attaching a front polarizing member 111b and a rear polarizing member 111c to a TFT color LCD cell 111a, and displays vehicle information such as vehicle speed as an image. The backlight unit 112 is disposed behind the liquid crystal display panel 111 and illuminates and transmits the liquid crystal display panel 111. The light diffusion plate 113 is disposed between the liquid crystal display panel 111 and the backlight unit 112 and diffuses illumination light emitted from the backlight unit 112. The case body 114 is made of a metal bottomed casing, and houses the liquid crystal display panel 111, the backlight unit 112, and the light diffusion plate 113.
　液晶表示パネル１１１は、透光性接着剤１８０にて、カバーパネル１２０の後面に密着されている。透光性接着剤１８０は、例えば、無色透明なシート状の接着剤であり、窓部１２５ｄを覆うように形成される。透光性接着剤１８０は、例えば、１．４～１．５５の屈折率を有する。 The liquid crystal display panel 111 is in close contact with the rear surface of the cover panel 120 with a translucent adhesive 180. The translucent adhesive 180 is, for example, a colorless and transparent sheet-like adhesive, and is formed so as to cover the window portion 125d. The translucent adhesive 180 has a refractive index of 1.4 to 1.55, for example.
　カバーパネル１２０は、透光性基板１２１，低反射層１２２，遮光部１２５を有している。カバーパネル１２０の透光性基板１２１は、平板形状のアクリル（ＰＭＭＡ）からなるものであり、正面視で矩形になっている。カバーパネル１２０の低反射層１２２は、前面保護層１２２の前面に形成されている。カバーパネル１２０の低反射層１２２は、シリコーンやフッ化マグネシウム等の薄膜積層体からなり、光の干渉を利用することにより反射を低減するものである。 The cover panel 120 includes a translucent substrate 121, a low reflection layer 122, and a light shielding portion 125. The translucent substrate 121 of the cover panel 120 is made of flat plate acrylic (PMMA) and has a rectangular shape when viewed from the front. The low reflection layer 122 of the cover panel 120 is formed on the front surface of the front protective layer 122. The low reflection layer 122 of the cover panel 120 is made of a thin film laminate such as silicone or magnesium fluoride, and reduces reflection by utilizing light interference.
　カバーパネル１２０の遮光部１２５は、黒色印刷層からなるものであり、透光性基板１２１の後面に形成されている。カバーパネル１２０の遮光部１２５は、第一の遮光層１２５ａ，第二の遮光層１２５ｂ，第三の遮光層１２５ｃを有している。第一の遮光層１２５ａは、透光性基板１２１の後面に形成されている。第二の遮光層１２５ｂは、第一の遮光層１２５ａの後面に形成されている。第三の遮光層１２５ｃは、第二の遮光層１２５ｂの後面に形成されている。 The light shielding portion 125 of the cover panel 120 is made of a black print layer and is formed on the rear surface of the translucent substrate 121. The light shielding portion 125 of the cover panel 120 includes a first light shielding layer 125a, a second light shielding layer 125b, and a third light shielding layer 125c. The first light shielding layer 125 a is formed on the rear surface of the translucent substrate 121. The second light shielding layer 125b is formed on the rear surface of the first light shielding layer 125a. The third light shielding layer 125c is formed on the rear surface of the second light shielding layer 125b.
　第一の遮光層１２５ａは、液晶表示器１１０の画像を透視する矩形の窓部１２５ｄと、複数の警告表示部１２５ｅとを有している。警告表示部１２５ｅは、第一の遮光層１２５ａにて形成された警告マークからなるものである。第一の遮光層１２５ａは、正面視で透光性接着剤１８０に所定幅Ｗ２で重なっており、透光性接着剤１８０に接触している。第二の遮光層１２５ｂ，第三の遮光層１２５ｃは、正面視で透光性接着剤８０に重なっておらず、透光性接着剤１８０に接触していない。 The first light-shielding layer 125a has a rectangular window 125d through which an image of the liquid crystal display 110 is seen, and a plurality of warning display parts 125e. The warning display part 125e consists of warning marks formed by the first light shielding layer 125a. The first light shielding layer 125a overlaps the translucent adhesive 180 with a predetermined width W2 in front view and is in contact with the translucent adhesive 180. The second light shielding layer 125 b and the third light shielding layer 125 c do not overlap the light-transmitting adhesive 80 and do not contact the light-transmitting adhesive 180 when viewed from the front.
　上ケース１３０は、ＡＥＳ等の樹脂からなるものであり、カバーパネル１２０の側端面を覆うように、カバーパネル１２０の外周を覆っている。上ケース１３０内の空間には、液晶表示器１１０が収容されている。上ケース１３０は、内側に突出した支持部１３１を有しており、この支持部１３１でカバーパネル１２０を支持している。 The upper case 130 is made of a resin such as AES, and covers the outer periphery of the cover panel 120 so as to cover the side end surface of the cover panel 120. A liquid crystal display 110 is accommodated in the space inside the upper case 130. The upper case 130 has a support part 131 protruding inward, and the support part 131 supports the cover panel 120.
　回路基板１４０は、ガラスエポキシ樹脂からなる基材に銅箔からなる配線パターンを形成したものであり、液晶表示器１１０を駆動するマイコン１９０と、発光素子１４１とが搭載されている。回路基板１４０には、図示しない可撓性配線部材によって液晶表示器１１０が電気的に接続されている。発光素子１４１は、警告表示部１２５ｅの後方に配置されており、警告表示部１２５ｅを透過照明する。下ケース１５０は、ＡＥＳやＰＰ等の樹脂からなるものである。下ケース１５０は、上ケース１３０の後側に固定されている。ライトボックス１６０は、発光素子１４１を囲う筒状になっており、発光素子１４１が発した光を警告表示部１２５ｅに導く照明室を形成する。 The circuit board 140 is formed by forming a wiring pattern made of copper foil on a base material made of glass epoxy resin, and is mounted with a microcomputer 190 that drives the liquid crystal display 110 and a light emitting element 141. The liquid crystal display 110 is electrically connected to the circuit board 140 by a flexible wiring member (not shown). The light emitting element 141 is disposed behind the warning display unit 125e and illuminates the warning display unit 125e. The lower case 150 is made of a resin such as AES or PP. The lower case 150 is fixed to the rear side of the upper case 130. The light box 160 has a cylindrical shape surrounding the light emitting element 141, and forms an illumination chamber that guides light emitted from the light emitting element 141 to the warning display portion 125e.
　第一，第二実施形態は、画像を表示する液晶表示器（表示パネル）５０，１１０と、液晶表示器（表示パネル）５０，１１０が透光性接着剤８０，１８０にて接着される透光性基板４４，１２１と、画像を視認するための窓部４５ｄ，１２５ｄを有し透光性基板４４，１２１に設けられた遮光部４５，１２５と、を備えた車両用表示装置であって、遮光部４５，１２５は、透光性接着剤８０，１８０に接触する第一の遮光層４５ａ，１２５ａと、透光性接着剤８０，１８０に接触しない第二の遮光層４５ｂ，１２５ｂと、を有し、第一の遮光層４５ａ，１２５ａは、透光接着剤８０，１８０に正面視で重なっていると共に、前記第二の遮光層４５ｂ，１２５ｂは、前記透光接着剤８０，１８０に正面視で重なっていないものであり、第一の遮光層４５ａ，１２５ａを透光性接着剤８０，１８０に接触させ、第二の遮光層４５ｂ，１２５ｂを透光性接着剤８０，１８０に接触させないことにより、遮光部４５，１２５の窓部４５ｄ，１２５ｄの近傍に隙間が生じる虞が少ない。 In the first and second embodiments, the liquid crystal displays (display panels) 50 and 110 for displaying images and the liquid crystal displays (display panels) 50 and 110 are bonded by translucent adhesives 80 and 180. A vehicular display device including optical substrates 44 and 121 and light shielding portions 45 and 125 provided on the transparent substrates 44 and 121 having window portions 45d and 125d for visually recognizing images. The light shielding portions 45 and 125 include first light shielding layers 45a and 125a that are in contact with the light transmissive adhesives 80 and 180, and second light shielding layers 45b and 125b that are not in contact with the light transmissive adhesives 80 and 180. The first light shielding layers 45a and 125a overlap the light transmitting adhesives 80 and 180 in a front view, and the second light shielding layers 45b and 125b are formed on the light transmitting adhesives 80 and 180. It is the one that does not overlap in front view, The light layers 45a and 125a are brought into contact with the translucent adhesives 80 and 180, and the second light shielding layers 45b and 125b are not brought into contact with the translucent adhesives 80 and 180. , 125d is less likely to cause a gap.
　なお、本発明は、第一，第二実施形態に限定されるものではなく、種々の変形が可能である。例えば、図８に示す他の実施形態のように、透光性基板１２１の後面に第二の遮光層１２５ｂを形成し、この第二の遮光層１２５ｂを覆うように第一の遮光層１２５ａを形成しても良い。また、表示パネルは、有機ＥＬ（Electro Luminescence）表示パネルであっても良い。 Note that the present invention is not limited to the first and second embodiments, and various modifications are possible. For example, as in another embodiment shown in FIG. 8, the second light shielding layer 125b is formed on the rear surface of the light-transmitting substrate 121, and the first light shielding layer 125a is formed so as to cover the second light shielding layer 125b. It may be formed. The display panel may be an organic EL (Electro Luminescence) display panel.
　　４４　　透光性基板
　　４５　　遮光部
　　４５ａ　第一の遮光層
　　４５ｂ　第二の遮光層
　　４５ｄ　窓部
　　５１　　液晶表示パネル（表示パネル）
　　８０　　透光性接着剤
　１１１　　液晶表示パネル（表示パネル）
　１８０　　透光性接着剤
　１２１　　透光性基板
　１２５　　遮光部
　１２５ｄ　透光性基板
　１２５ａ　第一の遮光層
　１２５ｂ　第二の遮光層
　１２５ｅ　警告表示部
　１４１　　発光素子 44 translucent substrate 45 light shielding part 45a first light shielding layer 45b second light shielding layer 45d window part 51 liquid crystal display panel (display panel)
80 Translucent adhesive 111 Liquid crystal display panel (display panel)
180 light-transmitting adhesive 121 light-transmitting substrate 125 light-blocking portion 125d light-transmitting substrate 125a first light-blocking layer 125b second light-blocking layer 125e warning display portion 141 light-emitting element

Claims (3)

  1. 　画像を表示する表示パネルと、前記表示パネルが透光性接着剤にて接着される透光性基板と、前記画像を視認するための窓部を有し前記透光性基板に設けられた遮光部と、を備えた表示装置であって、
    　前記遮光部は、前記透光性接着剤に接触する第一の遮光層と、前記透光性接着剤に接触しない第二の遮光層と、を有し、
    　前記第一の遮光層は、前記透光接着剤に正面視で重なっていると共に、前記第二の遮光層は、前記透光接着剤に正面視で重なっていないことを特徴とする表示装置。     A display panel for displaying an image, a translucent substrate to which the display panel is bonded with a translucent adhesive, and a light shield provided on the translucent substrate having a window portion for viewing the image A display device comprising:
    The light-shielding portion has a first light-shielding layer that contacts the light-transmitting adhesive and a second light-shielding layer that does not contact the light-transmitting adhesive.
    The first light-shielding layer overlaps the light-transmitting adhesive in a front view, and the second light-shielding layer does not overlap the light-transmitting adhesive in a front view.
  2. 　前記遮光部は、警告表示部を有することを特徴とする請求項１に記載の表示装置。 The display device according to claim 1, wherein the light shielding unit includes a warning display unit.
  3. 　前記警告表示部は、前記第一の遮光層または前記第二の遮光層の何れか一方の遮光層からなることを特徴とする請求項２に記載の表示装置。 3. The display device according to claim 2, wherein the warning display unit includes one of the first light shielding layer and the second light shielding layer.
PCT/JP2018/001908 2017-01-27 2018-01-23 Display device WO2018139432A1 (en)

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JP2009192792A (en) * 2008-02-14 2009-08-27 Seiko Instruments Inc Liquid crystal display device
JP2014182164A (en) * 2013-03-18 2014-09-29 Japan Display Inc Display device
JP2015138088A (en) * 2014-01-21 2015-07-30 三菱電機株式会社 image display device
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JP2009192792A (en) * 2008-02-14 2009-08-27 Seiko Instruments Inc Liquid crystal display device
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JP2015138088A (en) * 2014-01-21 2015-07-30 三菱電機株式会社 image display device
JP2016037173A (en) * 2014-08-07 2016-03-22 日本精機株式会社 Display device for vehicle

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Publication number Priority date Publication date Assignee Title
CN111640367A (en) * 2020-06-11 2020-09-08 武汉华星光电技术有限公司 Display device and method for manufacturing the same
CN111640367B (en) * 2020-06-11 2022-07-12 武汉华星光电技术有限公司 Display device and method for manufacturing the same

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