WO2014118920A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2014118920A1
WO2014118920A1 PCT/JP2013/052085 JP2013052085W WO2014118920A1 WO 2014118920 A1 WO2014118920 A1 WO 2014118920A1 JP 2013052085 W JP2013052085 W JP 2013052085W WO 2014118920 A1 WO2014118920 A1 WO 2014118920A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission amount
light transmission
unit
display device
light
Prior art date
Application number
PCT/JP2013/052085
Other languages
English (en)
Japanese (ja)
Inventor
黒田　和男
Original Assignee
パイオニア株式会社
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 パイオニア株式会社 filed Critical パイオニア株式会社
Priority to PCT/JP2013/052085 priority Critical patent/WO2014118920A1/fr
Publication of WO2014118920A1 publication Critical patent/WO2014118920A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0238—Improving the black level
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/10—Automotive applications

Definitions

  • the present invention relates to a display device.
  • Patent Document 1 describes that an organic layer is used as an example of a light emitting layer of a light emitting panel.
  • Patent Document 1 further describes that optical films are provided on both sides of a light emitting panel from which light is emitted from both sides. These optical films are configured such that the directions of polarization of transmitted light are orthogonal to each other. Thus, it is described that the background of the light-emitting panel can be prevented from being seen through.
  • Patent Document 2 describes a display device in which a transmissive liquid crystal panel is disposed on a light source having a red LED (Light Emitting Diode), a green LED, and a blue LED. Patent Document 2 further describes that when red light intensity is calibrated, a red LED, a green LED, and a blue LED are driven in a time-sharing manner.
  • a red LED Light Emitting Diode
  • a green LED Green LED
  • a blue LED when red light intensity is calibrated, a red LED, a green LED, and a blue LED are driven in a time-sharing manner.
  • Thin display devices can be installed in various places. On the other hand, by installing the display device, the background of the display device cannot be seen. The present inventor has considered that if the background of the display device is visible, the degree of freedom of the installation location of the display device increases.
  • An example of a problem to be solved by the present invention is to make the background of a display device visible while suppressing unnecessary display and light leakage on the side opposite to the side on which information is to be displayed.
  • the invention according to claim 1 is a translucent surface display unit that displays information on the first surface side, A light transmission amount adjusting unit that is provided on the second surface side of the surface display unit and controls a light transmission amount; A control unit that controls the light transmission amount adjustment unit based on the timing at which the surface display unit emits light; It is a display apparatus provided with.
  • FIG. 1 is a diagram illustrating a configuration of a display device according to Example 1.
  • FIG. It is a figure which shows the 1st example of control of the light transmission amount adjustment part by a control part. It is a figure which shows the 2nd example of control of the light transmission amount adjustment part by a control part.
  • 6 is a diagram illustrating a usage mode of a display device according to Embodiment 2.
  • FIG. 6 is a cross-sectional view illustrating a configuration of a surface display unit and a light transmission amount adjustment unit included in a display device according to Example 3.
  • FIG. FIG. 10 is a diagram illustrating a configuration of a surface display unit and a light transmission amount adjustment unit included in a display device according to Example 4;
  • each component of the control unit 300 is not a hardware unit configuration but a functional unit block.
  • Each component of the control unit 300 is centered on an arbitrary computer CPU, memory, a program for realizing the components shown in the figure loaded in the memory, a storage medium such as a hard disk for storing the program, and a network connection interface. Realized by any combination of hardware and software. There are various modifications of the implementation method and apparatus.
  • FIG. 1 is a diagram illustrating a configuration of a display device 10 according to the embodiment.
  • the display device 10 is a device that displays information, for example, a moving image, a still image, or character information, and includes a surface display unit 100, a light transmission amount adjustment unit 200, and a control unit 300.
  • the surface display unit 100 is translucent and displays information on the first surface side.
  • the light transmission amount adjustment unit 200 is provided on the second surface side of the surface display unit 100 and controls the light transmission amount.
  • the control unit 300 controls the light transmission amount adjustment unit 200 based on the timing at which the surface display unit 100 emits light. Details will be described below.
  • the surface display unit 100 is an organic EL display panel, for example, but may display information by other methods such as a liquid crystal display panel.
  • the light transmission amount adjusting unit 200 has, for example, a liquid crystal.
  • the light transmission amount adjusting unit 200 controls the light transmission amount in the light transmission amount adjusting unit 200 by controlling the alignment direction of the liquid crystal.
  • the light transmission amount adjusting unit 200 may control the light transmission amount using a shutter driven by another method, for example, MEMS (Micro Electro Mechanical System).
  • the surface display unit 100 since the surface display unit 100 has translucency, a person on the first surface side of the surface display unit 100, that is, a side on which information is displayed, displays information on the surface display unit 100. When is not displayed and the light transmission amount of the light transmission amount adjustment unit 200 is large, the background of the surface display unit 100 can be seen. Further, the light transmission amount adjustment unit 200 is located on the second surface side of the surface display unit 100. For this reason, by appropriately performing control by the control unit 300, even if the surface display unit 100 has translucency, information on the second surface side of the surface display unit 100 is recognized in a mirror image state. This can be suppressed. Specifically, the control unit 300 controls the light transmission amount adjustment unit 200 based on the timing at which the surface display unit 100 emits light.
  • FIG. 2 is a diagram illustrating the configuration of the display device 10 according to the first embodiment.
  • the light transmission amount adjustment unit 200 includes a liquid crystal layer 210.
  • the light transmission amount adjusting unit 200 includes a liquid crystal layer 210 and polarizing units 232 and 234.
  • the liquid crystal layer 210 is located between the polarizing portions 232 and 234.
  • the polarization direction of the polarization unit 232 is orthogonal to the polarization direction of the polarization unit 234.
  • the liquid crystal layer 210 is sandwiched between the first electrode 222 and the second electrode 224.
  • the first electrode 222 and the second electrode 224 are connected to the control unit 300. That is, the alignment direction of the liquid crystal in the liquid crystal layer 210 is controlled by the control unit 300.
  • FIG. 3 is a diagram illustrating a first example of control of the light transmission amount adjustment unit 200 by the control unit 300.
  • the control unit 300 reduces the light transmission amount of the light transmission amount adjustment unit 200 (preferably the minimum value, for example, 5% or less) at the timing when the surface display unit 100 emits light.
  • the light transmission amount of the light transmission amount adjustment unit 200 is increased (preferably maximum). In this way, at the timing when the surface display unit 100 does not emit light, the person can recognize the background of the surface display unit 100 from both the first surface side and the second surface side of the surface display unit 100.
  • the surface display unit 100 is blinked at 30 Hz or higher, a person on the first surface side of the surface display unit 100 can recognize that the surface display unit 100 is continuously displaying information.
  • FIG. 4 is a diagram illustrating a second example of control of the light transmission amount adjustment unit 200 by the control unit 300.
  • the control unit 300 reduces the light transmission amount of the light transmission amount adjustment unit 200 before the timing at which the surface display unit 100 starts to emit light (preferably the minimum value, for example, 5% or less). Except for this point, it is the same as the example shown in FIG. In this way, for example, even if it takes time for the alignment direction of the liquid crystal to change after inputting a signal, it is possible to prevent light from being emitted from the second surface side of the surface display unit 100.
  • the light transmission amount adjusting unit 200 includes the liquid crystal layer 210 and the polarizing units 232 and 234. For this reason, the control part 300 can control the light transmittance of the light transmission amount adjustment part 200 easily.
  • FIG. 5 is a diagram illustrating a usage mode of the display device 10 according to the second embodiment.
  • the display device 10 is used as a navigation device in a vehicle, for example, an automobile.
  • the surface display unit 100 of the display device 10 is mounted on the dashboard 410, if the surface display unit 100 has translucency, the light from the surface display unit 100 is driven by the driver of the oncoming vehicle. Hinder.
  • the surface display unit 100 does not have translucency, the surface display unit 100 narrows the field of view when looking out from inside the vehicle.
  • the control unit 300 performs the control shown in FIG. 3 or FIG.
  • navigation information can be recognized by the driver of the vehicle to which the display device 10 is attached, and light from the surface display unit 100 can be suppressed from being recognized by the driver of the oncoming vehicle.
  • by increasing the transmission amount of the light transmission amount adjusting unit 200 while the surface display unit 100 is not displaying navigation information it is possible to suppress the surface display unit 100 from narrowing the field of view when looking outside from the inside of the vehicle. .
  • FIG. 6 is a cross-sectional view illustrating configurations of the surface display unit 100 and the light transmission amount adjustment unit 200 included in the display device 10 according to the third embodiment.
  • the display device 10 according to the present example has the same configuration as that of any of the embodiment and Examples 1 and 2 except for the configurations of the surface display unit 100 and the light transmission amount adjustment unit 200.
  • the surface display unit 100 is an active organic EL display device, and the organic functional layer 104 is divided into pixel units. That is, the surface display unit 100 has a plurality of light emitting elements (organic EL elements) arranged in a matrix.
  • a first electrode 102, an organic functional layer 104, a second electrode 106, and a switching element 125 are provided on the first surface side of a light transmitting substrate 110 (an example of a light transmitting layer) of the surface display unit 100. Film-Transistor)) and a wiring connected to the switching element 125 is formed.
  • the switching element 125 is controlled by the control unit 300.
  • an optical film such as an antireflection film such as a moth-eye structure or a light extraction film is attached to the second surface side of the translucent substrate 110, that is, the side opposite to the light emitting element.
  • the organic functional layer 104 has at least a hole injection layer, a light emitting layer, and an electron injection layer.
  • the organic functional layer 104 may further include at least one of a hole transport layer and an electron transport layer.
  • Each layer of the organic functional layer 104 may be formed by an evaporation method or may be formed by a coating method.
  • the surface display unit 100 may be a passive organic EL display device.
  • the light transmission amount adjusting unit 200 is divided into a plurality of regions.
  • the control unit 300 can individually control the light transmission amount of the light transmission amount adjustment unit 200 in each of the plurality of regions.
  • the second electrode 224 of the light transmission amount adjusting unit 200 is divided into pixel units of the surface display unit 100.
  • Each of the plurality of second electrodes 224 is connected to a switching element 225, for example, a TFT.
  • the switching element 225 is controlled by the control unit 300. That is, the light transmission amount adjustment unit 200 can control the light transmission amount in units of pixels of the surface display unit 100.
  • one second electrode 224 may have a shape and a size that cover a plurality of pixels of the surface display unit 100.
  • the control unit 300 corresponds to a part of the light transmission amount adjustment unit 200, specifically, the information display region of the surface display unit 100. Only in the region, the amount of transmitted light is reduced at the timing when the surface display unit 100 emits light. Then, the control unit 300 increases (for example, maximizes) the light transmission amount for other regions of the light transmission amount adjustment unit 200.
  • the same effect as that in any of the embodiment and Examples 1 and 2 can be obtained.
  • the control unit 300 displays only the part corresponding to the information display area of the surface display unit 100 in the light transmission amount adjustment unit 200.
  • the amount of transmitted light is reduced at the timing when light is emitted. For this reason, the area
  • the surface display unit 100 since the surface display unit 100 includes the optical path changing layer 112, the light extraction efficiency of the surface display unit 100 is increased.
  • FIG. 7 is a diagram illustrating configurations of the surface display unit 100 and the light transmission amount adjustment unit 200 included in the display device 10 according to the fourth embodiment.
  • the display device 10 according to the present embodiment has the same configuration as that of the third embodiment except for the configuration of the surface display unit 100.
  • the surface display unit 100 is a liquid crystal display panel, and includes a backlight 160, a diffusion layer 150, a liquid crystal layer 114, a filter layer 140, and polarizing units 132 and 134.
  • a first electrode 122 is provided on the first surface of the liquid crystal layer 114, and a second electrode 124 is provided on the second surface of the liquid crystal layer 114.
  • the second electrode 124 is divided into pixel units.
  • a wiring is connected to the second electrode 124 via a switching element 125.
  • the filter layer 140 is provided with a plurality of color filters 142. The color filter 142 overlaps the second electrode 124 in plan view.
  • the diffusion layer 150 is provided to diffuse the light from the backlight 160.
  • a plurality of slits 152 are provided in the diffusion layer 150.
  • the slit 152 is provided in order to give the surface display unit 100 translucency.
  • the filter layer 140 includes a region where the color filter 142 is not provided. Then, the light transmitted through the slit 152 passes through a region where the color filter 142 is not provided and each color filter 142, so that the background can be seen. Since other colors do not pass through the color filter 142, the light transmission efficiency decreases.
  • the slit 152 is also arranged in a portion where the color filter 142 is not provided. This region is at least a part of the light transmitting portion 101 of the surface display unit 100.
  • each color filter 142 and the color filter 142 are installed.
  • light from the background can be transmitted without being scattered.
  • the luminance dynamic range can be expanded by controlling the liquid crystal in the portion where the color filter 142 is not installed.
  • a liquid crystal display panel can be used as the translucent surface display unit 100.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif d'affichage (10) qui affiche des informations, telles que des images en mouvement, des images fixes et des informations de caractère, et qui comprend une unité d'affichage de surface (100), une unité de réglage de quantité de transmission de lumière (200), et une unité de commande (300) . L'unité d'affichage de surface (100) est transparente et présente des informations sur un premier côté de surface. L'unité de réglage de quantité de transmission de lumière (200) est disposée sur le second côté de surface de l'unité d'affichage de surface (100) et commande la quantité de lumière transmise. L'unité de commande (300) commande l'unité de réglage de quantité de transmission de lumière (200) sur la base du temps où l'unité d'affichage de surface (100) émet de la lumière.
PCT/JP2013/052085 2013-01-30 2013-01-30 Dispositif d'affichage WO2014118920A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/052085 WO2014118920A1 (fr) 2013-01-30 2013-01-30 Dispositif d'affichage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/052085 WO2014118920A1 (fr) 2013-01-30 2013-01-30 Dispositif d'affichage

Publications (1)

Publication Number Publication Date
WO2014118920A1 true WO2014118920A1 (fr) 2014-08-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017097377A (ja) * 2013-03-27 2017-06-01 株式会社半導体エネルギー研究所 表示パネルおよび表示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434678U (fr) * 1987-08-27 1989-03-02
JPH02119685U (fr) * 1989-03-13 1990-09-26
JPH11298918A (ja) * 1998-04-07 1999-10-29 Matsushita Electric Ind Co Ltd 三次元液晶表示装置
JP2002311412A (ja) * 2001-04-17 2002-10-23 Matsushita Electric Ind Co Ltd 液晶表示装置
JP2006267213A (ja) * 2005-03-22 2006-10-05 Mitsubishi Electric Corp 両面表示装置
JP2008083510A (ja) * 2006-09-28 2008-04-10 Toppan Printing Co Ltd 表示装置及び表示方法
JP2012155320A (ja) * 2011-01-07 2012-08-16 Semiconductor Energy Lab Co Ltd 表示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6434678U (fr) * 1987-08-27 1989-03-02
JPH02119685U (fr) * 1989-03-13 1990-09-26
JPH11298918A (ja) * 1998-04-07 1999-10-29 Matsushita Electric Ind Co Ltd 三次元液晶表示装置
JP2002311412A (ja) * 2001-04-17 2002-10-23 Matsushita Electric Ind Co Ltd 液晶表示装置
JP2006267213A (ja) * 2005-03-22 2006-10-05 Mitsubishi Electric Corp 両面表示装置
JP2008083510A (ja) * 2006-09-28 2008-04-10 Toppan Printing Co Ltd 表示装置及び表示方法
JP2012155320A (ja) * 2011-01-07 2012-08-16 Semiconductor Energy Lab Co Ltd 表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017097377A (ja) * 2013-03-27 2017-06-01 株式会社半導体エネルギー研究所 表示パネルおよび表示装置

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