WO2007138732A1 - 表示装置システム - Google Patents
表示装置システム Download PDFInfo
- Publication number
- WO2007138732A1 WO2007138732A1 PCT/JP2006/325484 JP2006325484W WO2007138732A1 WO 2007138732 A1 WO2007138732 A1 WO 2007138732A1 JP 2006325484 W JP2006325484 W JP 2006325484W WO 2007138732 A1 WO2007138732 A1 WO 2007138732A1
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- WIPO (PCT)
- Prior art keywords
- display device
- liquid crystal
- light
- viewing angle
- device system
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13476—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer assumes a scattering state
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- 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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D9/00—Counting coins; Handling of coins not provided for in the other groups of this subclass
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F19/00—Complete banking systems; Coded card-freed arrangements adapted for dispensing or receiving monies or the like and posting such transactions to existing accounts, e.g. automatic teller machines
- G07F19/20—Automatic teller machines [ATMs]
- G07F19/205—Housing aspects of ATMs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
- G02F1/133562—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the viewer side
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133616—Front illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
Definitions
- the present invention relates to a display device system including a viewing angle control panel for controlling a viewing angle of a display panel.
- Display devices are generally required to have as wide a viewing angle as possible so that a clear image can be seen at any viewing angle force.
- liquid crystal display devices that have been widely used recently have been developed for various viewing angles because the liquid crystal itself has a viewing angle dependency.
- Patent Document 1 a display device that displays an image includes a phase difference control device, and controls a voltage applied to the phase difference control device.
- a technique for changing the viewing angle characteristic has been proposed.
- Patent Document 1 exemplifies chiral nematic liquid crystal, homogenous liquid crystal, randomly aligned nematic liquid crystal, and the like as liquid crystal modes used in a liquid crystal display device for phase difference control.
- Patent Document 2 and Patent Document 3 a viewing angle control liquid crystal panel is provided above the display liquid crystal panel, and these panels are sandwiched between two polarizing plates to control the viewing angle. Also disclosed is a configuration that controls the viewing angle by adjusting the voltage applied to the liquid crystal panel. It is.
- the liquid crystal mode of the viewing angle control liquid crystal panel is a twisted nematic system.
- Patent Document 1 Japanese Patent Publication “Japanese Laid-Open Patent Publication No. 11-174489 (published July 2, 1999)”
- Patent Document 2 Japanese Patent Publication “Japanese Patent Laid-Open No. 10-268251 (published Oct. 9, 1998)”
- Patent Document 3 Japanese Patent Gazette “JP 2005-309020 gazette (published on November 4, 2005)”
- Patent Document 1 shows a contrast curve with a contrast ratio of about 10: 1 as shown in FIG. 17, and in the narrow viewing angle mode, the contrast in the wide viewing angle direction certainly decreases. .
- the human power indicator next to it is fully visible. This is because, in general, even when the contrast ratio is reduced to 2: 1, for example, the display can be sufficiently visually recognized.
- Patent Document 2 and Patent Document 3 also switch between a wide viewing angle and a narrow viewing angle by adjusting the contrast by changing the voltage applied to the viewing angle control liquid crystal panel. Although it is a thing, the effect is not enough.
- the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a display device system capable of increasing the shielding effect.
- the display device system of the present invention includes a display device that includes a knocklight, a display panel, and a viewing angle control panel that controls the viewing angle of the display panel in order to solve the above-described problems.
- a reflected light amount relative increase unit that is a display device system that makes the amount of reflected light of external light reflected from the display device relatively larger than the amount of light leakage from the backlight in the display device. Is provided. The reason for “relatively” is that the luminance of the backlight can be reduced as a method of making the amount of reflected light larger than the amount of light leakage from the backlight.
- the reflected light amount relative increase unit relatively increases the reflected light amount of the reflected light of the external light in the display device than the light leakage amount from the backlight in the display device. Like that. Thereby, visual recognition of the display on the display panel in the display device can be reduced. As a result, a display device system that can increase the shielding effect can be provided.
- the reflected light amount relative increasing unit includes a light lighting unit that turns on a light that increases the reflected light amount of the display device.
- the light lighting unit includes a light at a position of at least one of the four sides surrounding the display device.
- the light provided at the position of at least one of the four sides surrounding the display device can cause the amount of reflected light of the reflected light of the external light in the display device to be larger than the amount of light leakage from the backlight. Can be made relatively large.
- the light lighting unit includes a light at a position facing an observer who uses the display device.
- the light is provided in front of the observer.
- a person behind the observer who uses the display device Due to the increase of the reflected light, the visual recognition of the display on the display device is suppressed.
- the display device is provided with a touch panel that is provided on a front surface side of the display panel and enables signal input by touching a part thereof. It is preferable that the light lighting unit turns on the light when touching the touch panel.
- the reflected light amount relative increase unit includes a human detection sensor that detects the presence of a person, and the light lighting unit detects the presence of a person by the human detection sensor. When it is done, it is preferable to turn on the light.
- the light is turned on when the presence of the person is detected by the person detection sensor that detects the presence of the person. Therefore, when the operator uses the display device, the amount of reflected light of the external light reflected by the display device can be made relatively larger than the amount of light leakage of the knock light force. As a result, even if there is a person behind the operator who uses the display device, visual recognition of the display by the person behind the operator can be suppressed.
- the display device is provided in an automatic teller machine, and the light lighting unit is provided when a cash card is inserted into the automatic teller machine. It is preferable to turn on the light.
- the reflected light amount relative increase unit includes a backlight luminance reduction unit that reduces the luminance of the backlight.
- the backlight It is also possible to reduce the brightness. According to this, it is possible to provide a display device system that can reduce the visual recognition of the display on the display device and can increase the shielding effect.
- the display device is provided with a touch panel that is provided on a front surface side of the display panel and that allows a signal to be input by touching a part thereof.
- the backlight brightness reduction unit preferably reduces the brightness of the backlight when the touch panel is touched.
- the reflected light amount relative increase unit includes a human detection sensor that detects the presence of a person
- the backlight luminance reduction unit includes the human detection sensor. It is preferable to reduce the brightness of the backlight when detecting the light.
- the brightness of the knocklight is reduced when the presence of a person is detected by the human detection sensor. Therefore, when there is an operator who uses the display device, it is possible to make the reflected light amount of the reflected light of the external light on the display device relatively larger than the light leakage amount from the knock light. As a result, even if there is a person behind the operator who uses the display device, visual recognition of the display by the person behind the operator can be suppressed.
- the display device is provided in an automatic teller machine, and the backlight luminance reduction unit inserts a cash card into the automatic teller machine (ATM). It is preferable to reduce the brightness of the backlight when
- the human sensor detects the presence of a person by infrared rays.
- a human detection sensor can be easily configured by detecting the presence of a person using general infrared rays.
- the human sensor detects the presence of a person who operates the display device.
- the amount of reflected light of the external light reflected by the display device is relatively larger than the amount of light leakage from the knocklight. It can be done.
- the human sensor detects the presence of a person behind the person who operates the display device.
- the amount of reflected light of the external light reflected on the display device is relatively larger than the amount of light leakage from the knocklight. You can rub it.
- the reflected light amount relative increase unit includes a peripheral illuminance sensor that detects illuminance around the display device, and the light lighting unit includes the peripheral illuminance sensor. It is preferable to turn on the light when the illuminance sensed at is below the set value.
- the light lighting unit turns on the light.
- the reflected light amount relative increase unit includes a peripheral illuminance detection sensor that detects illuminance around the display device, and the backlight luminance reduction unit includes the peripheral illuminance detection. It is preferable to reduce the brightness of the backlight when the illuminance detected by the sensor falls below the set value.
- the illuminance detected by the ambient illuminance sensor is set in the knocklight luminance reduction unit.
- the brightness of the backlight is reduced.
- the reflected light amount relative increase portion is provided with a polarizing plate on the surface side of the display device that has been subjected to diffusion treatment.
- the viewing angle control panel can be compared with the case where the polarizing plate not subjected to the diffusion treatment is provided.
- the shielding effect is increased.
- the reflected light amount relative increase portion includes a reflecting member for increasing the reflected light amount of the display device at least at a part of the periphery of the display device. Is preferred.
- the amount of reflected light of the display device can be increased by providing the reflective member at least at a part of the periphery of the display device.
- the reflecting member is provided at a position facing an observer who uses the display device.
- the external light is reflected by the reflecting member provided at the position facing the observer who uses the display device. Therefore, for example, a person behind a viewer who uses the display device can be prevented from seeing the display of the display device by the reflected light from the reflecting member.
- the reflecting member has a reflecting plate force capable of changing an opposing angle to the display device.
- the viewing angle control panel includes a liquid crystal cell having a liquid crystal layer in which liquid crystal molecules are vertically aligned between a pair of translucent substrates, and a voltage applied to the liquid crystal layer.
- the liquid crystal cell is disposed between two polarizing plates arranged so that polarization transmission axes are substantially orthogonal to each other, and the drive circuit includes liquid crystal molecules in a liquid crystal layer of the liquid crystal cell.
- the two polarizing plates whose polarization transmission axes are substantially orthogonal to each other are arranged so as to sandwich the liquid crystal cell of the viewing angle control panel.
- the viewing angle control panel and the two polarizing plates are not necessarily adjacent to each other, and some component may be interposed between them.
- the display state is a wide viewing angle that provides a first viewing angle range and a narrow viewing field that provides a second viewing angle range that is within the first viewing angle range and is narrower than the first viewing angle range. It can be switched to either.
- “wide viewing angle” and “narrow viewing angle” mean a relatively wide viewing angle and a relatively narrow viewing angle rather than a specific absolute angle range.
- the viewing angle can be controlled by switching between light transmission and shielding rather than reducing the contrast of display on the wide viewing angle side.
- the shielding effect can be increased.
- the display panel is a liquid crystal display panel. It is preferable. Note that the liquid crystal display panel may be a displacement of a transmissive liquid crystal display panel, a reflective liquid crystal display panel, or a transflective liquid crystal display panel.
- FIG. 1 is a schematic diagram showing one embodiment of a display device system according to the present invention.
- FIG. 2 is a cross-sectional view showing a configuration of a liquid crystal display device provided with a viewing angle control panel used in the display device system.
- FIG. 3 (a) is a perspective view showing an arrangement state of liquid crystal molecules in the narrow viewing angle mode of the viewing angle control panel, and (b) is a liquid crystal in the wide viewing angle mode of the viewing angle control panel. It is a perspective view which shows the arrangement
- FIG. 4 is a schematic diagram showing the definition of viewing angle with respect to a laminated body of a viewing angle control panel and a second polarizing plate arranged in the same direction as FIGS. 3 (a) and 3 (b).
- FIG. 5 (a), (b), and (c) are diagrams showing the positional relationship between liquid crystal molecules and polarizing plate transmission axes according to viewing angles.
- FIG. 6 is a chart showing a luminance distribution in the narrow viewing angle mode of the liquid crystal display device.
- FIG. 7 is a chart showing a luminance distribution in the wide viewing angle mode of the liquid crystal display device.
- FIG. 8 is a schematic diagram showing a configuration of a viewing angle control panel in which a retardation film is provided between a light-transmitting substrate and a polarizing plate in the liquid crystal display device.
- FIG. 9 (a) is a schematic diagram showing a mechanism of visual recognition when there is no reflected light, and (b) is a schematic diagram showing a mechanism of visual recognition when there is reflected light.
- FIG. 10 (a) is a perspective view showing a configuration of a display device system in which lights are provided around the liquid crystal display device.
- FIG. 10 (b) is a side view showing a configuration of a display device system provided with a front light at a position facing an observer who uses a liquid crystal display device.
- FIG. 11 is a side view showing a configuration of a display device system in which an infrared sensor for detecting the presence of a person is provided on the ceiling of a living room provided with an ATM.
- FIG. 12 (a) is a perspective view showing a configuration of a display device system in which an infrared sensor for detecting the presence of a person is provided in an ATM.
- FIG. 12 (b) is a perspective view showing another configuration of a display device system in which an infrared sensor for detecting the presence of a person is provided in an ATM.
- FIG. 13 (a) is a perspective view showing a configuration of a display device system provided with an infrared sensor that senses the presence of a person using a liquid crystal display device immediately before an ATM.
- FIG. 13 (b) is a perspective view showing a configuration of a display device system provided with an infrared sensor for detecting the presence of a person waiting in front of an ATM.
- FIG. 14 (a) is a perspective view showing a configuration of a display device system in which a light is turned on by inserting a card into an ATM.
- FIG. 14 (b) is a perspective view showing a configuration of a display device system provided in front of an ATM and provided with a person-sensing tread board for detecting the presence of a person.
- FIG. 15 (a) is a perspective view showing a configuration of a display device system in which an illuminance meter is provided in an ATM.
- FIG. 15 (b) is a perspective view showing a configuration of a display device system including an illuminometer in a living room provided with an ATM.
- FIG. 16 (a) is a perspective view showing a configuration of a display device system in which a reflecting plate is provided around an ATM.
- FIG. 16 (b) is a side view showing a configuration of a display device system including a reflection sheet at a position facing an observer who uses a liquid crystal display device.
- FIG. 16 (c) is a plan view showing a configuration of a display device system in which a front light and an aluminum material are provided around the liquid crystal display device.
- FIG. 17 is a chart showing the viewing angle distribution of a liquid crystal display device equipped with a conventional viewing angle control panel.
- each figure referred below demonstrates only the main member required in order to demonstrate this invention among the components of one Embodiment of this invention, for simplification, and showed it simply. It is. Therefore, the display device system of the present invention may include any constituent member that is not shown in each drawing referred to in this specification. In addition, the dimensions of the members in each figure do not faithfully represent the actual dimensions of the constituent members and the dimensional ratios of the members.
- FIG. 2 is a cross-sectional view showing a schematic configuration of the liquid crystal display device 10.
- the liquid crystal display device 10 includes two liquid crystal panels: a display liquid crystal panel 1 as a display panel for displaying an image and a viewing angle control panel 2 including a liquid crystal cell 21. ing.
- the display liquid crystal panel 1 is a transmissive type, and a backlight 3 is used as a light source.
- the viewing angle control panel 2 is provided between the backlight 3 and the display liquid crystal panel 1 as shown in FIG.
- the liquid crystal display device 10 includes a wide viewing angle mode in which the viewing angle of the image on the display liquid crystal panel 1 is wide by switching the liquid crystal in the viewing angle control panel 2, and a display liquid crystal.
- the display state of the two modes can be switched between the narrow viewing angle mode in which the image on the panel 1 is visible and the viewing angle is narrow.
- the narrow viewing angle mode is particularly suitable when it is not desirable for others to view the image on the LCD panel 1 for display.
- the wide viewing angle mode is used for other normal use or the LCD panel 1 for display. This image is preferably used when a plurality of people view the image at the same time.
- the display liquid crystal panel 1 includes a liquid crystal cell 11 having a liquid crystal sandwiched between a pair of translucent substrates, and a first polarizing plate 12 and a second polarizing plate 13 provided on the front and back of the liquid crystal cell 11.
- the liquid crystal mode and cell structure of the liquid crystal cell 11 are arbitrary.
- the drive mode of the display liquid crystal panel 1 is also arbitrary. That is, as the display liquid crystal panel 1, any liquid crystal panel that can display characters, images, or moving images can be used. Therefore, in FIG. 2, the detailed structure of the display liquid crystal panel 1 is not shown, and the description thereof is also omitted.
- the display liquid crystal panel 1 may be a panel capable of color display or a panel dedicated to monochrome display. Furthermore, there is no limitation on the structure of the knocklight 3. Any known backlight can be used, so a detailed structure diagram of the knocklight 3 can be used. The illustration and description are also omitted.
- the viewing angle control panel 2 includes a liquid crystal cell 21 having a liquid crystal layer sandwiched between a pair of light-transmitting substrates 21a '21b, which will be described later, and a third liquid crystal cell 21 provided on the backlight 3 side. And a polarizing plate 22.
- the liquid crystal layer of the liquid crystal cell 21 is made of nematic liquid crystal that has been vertically aligned (homeotope picked alignment).
- the viewing angle control panel 2 includes the liquid crystal cell 21 and can be switched between the wide viewing angle mode and the narrow viewing angle mode.
- the liquid crystal cell 21 may not be provided. Further, it may not be possible to switch between the wide viewing angle mode and the narrow viewing angle mode.
- FIGS. 3 (a) and 3 (b) are schematic diagrams mainly showing the configuration of the viewing angle control panel 2.
- (a) shows the alignment state of the liquid crystal molecules in the narrow viewing angle mode
- (b) shows the wide viewing angle. The alignment state of liquid crystal molecules in the mode is shown.
- the liquid crystal cell 21 of the viewing angle control panel 2 includes a pair of translucent substrates 21a ′ 21b.
- Transparent electrodes are formed on the respective surfaces of the translucent substrates 21a '21b using, for example, ITO (Indium Tin Oxide), not shown!
- the display liquid crystal panel 1 has an electrode structure corresponding to the display unit because it is necessary to drive the liquid crystal in a display unit such as a pixel unit or a segment unit.
- the viewing angle control panel 2 is not limited with respect to the electrode structure.
- a uniform transparent electrode may be formed on the entire surface of the translucent substrates 21a ′ 21b in order to perform uniform switching over the entire display surface, or any other electrode structure may be adopted.
- An alignment film (not shown) for aligning the liquid crystal molecules 21c is formed on the upper layer of the transparent electrode.
- the alignment film is rubbed by a known method.
- the rubbing direction in each of the translucent substrates 21a ′ and 21b is indicated by an arrow Ra′Rb.
- the rubbing direction R a for the alignment film of the translucent substrate 21a is parallel and opposite to the rubbing direction Rb for the alignment film of the translucent substrate 21b.
- the liquid crystal cell 21 is a so-called parallel cell having a twist angle of 0 (no twist).
- the liquid crystal injected into the liquid crystal cell 21 is a negative nematic liquid crystal having negative dielectric anisotropy. Therefore, the liquid crystal molecules 21c of the liquid crystal cell 21 When no voltage is applied, the molecular major axes are aligned perpendicular to the substrate surface of the translucent substrates 21a '21b.
- the retardation d 'An of the liquid crystal layer of the liquid crystal cell 21 is, for example, from 200 nm to 350 nm.
- the long axis shows a state inclined with respect to the normal line of the translucent substrate 21a ′ 21b.
- Fig. 3 (b) shows that the molecular long axis of the liquid crystal molecule 21c is transparent depending on the applied voltage V (eg, a voltage of 5. OV or higher).
- Optical substrate 21 a ⁇ Shows a state of being almost parallel to the 2 lb substrate surface.
- the third polarizing plate 22 provided below the liquid crystal cell 21 in the viewing angle control panel 2 and the second polarizing plate 13 of the display liquid crystal panel 1 are respectively
- the polarization transmission axis X and the polarization transmission axis X are arranged so as to be substantially orthogonal.
- the second polarizing plate 13 and the second polarizing plate 13 correspond to two polarizing plates arranged opposite to each other with the liquid crystal cell 21 of the present invention interposed therebetween.
- the first polarizing plate 12 corresponds to the polarizing plate of the present invention.
- the angle formed between the polarization transmission axis X and the polarization transmission axis X may be in the range of 80 ° to 100 °.
- the polarization transmission axis X of the second polarizing plate 13 of the display liquid crystal panel 1 is 40 with respect to the rubbing direction R with respect to the alignment film of the translucent substrate 21a.
- the viewing angle control panel 2 configured as described above is used to reduce the viewing angle to a wide viewing angle.
- the principle of switching between viewing angles will be described. That is, the viewing angle control panel 2 operates in cooperation with the second polarizing plate 13 of the display liquid crystal panel 1 by switching the voltage applied to the liquid crystal cell 21 to change the viewing angle between a wide viewing angle and a narrow viewing angle. Switch between.
- the viewing angle from a certain viewpoint with respect to the laminated body of the viewing angle control panel 2 and the second polarizing plate 13 is expressed as the second polarizing plate 13.
- Fig. 4 shows the viewing angles of three viewing points P to P for the laminated body of the viewing angle control panel 2 and the second polarizing plate 13 arranged in the same direction as Figs. 3 (a) and (b). It is.
- the azimuth angle 0 is the rotation angle of the line connecting the leg of the perpendicular line from the viewpoint to the plane including the surface of the second polarizing plate 13 and the center 13c of the second polarizing plate 13. It is.
- the azimuth angle ⁇ increases clockwise when viewed from above the normal direction of the second polarizing plate 13 with the azimuth angle in the direction of the viewpoint P being 0 °.
- the azimuth angle ⁇ of viewpoint P is 9
- the azimuth angle 0 of view point P is 180 °.
- the polar angle ⁇ is viewed as the center 13c of the second polarizing plate 13.
- the display state will be described.
- the short axis side of the liquid crystal molecule 21c is opposed to the viewing angle direction. It becomes.
- the applied voltage V to the liquid crystal cell 21 is 2.5 V to 3.
- L to L indicate luminances of 50 cdZm 2 and 100 cd / m 2.
- the molecular long axis of the liquid crystal molecule 21c is the polarization transmission axis X of the second polarizing plate 13 and the third polarization axis.
- the light plate 22 is slightly tilted with respect to each. As a result, the viewing angle of the viewpoint P force
- azimuth angle ⁇ 270 °! /, As shown in Fig. 6, polar angle ⁇ ! /, About 30 ° ⁇ ⁇ ⁇ 90 °. A sufficient light-shielding state can be obtained.
- the molecular long axis of the liquid crystal molecule 21c is the polarization transmission axis X of the second polarizing plate 13 and the third polarization axis.
- the major axis side faces the viewing angle direction. This allows viewpoint P
- the linearly polarized light emitted from the knocklight 3 and transmitted through the third polarizing plate 22 and entered the liquid crystal cell 21 is given birefringence by the liquid crystal molecules 21c, and the polarized light transmission axis of the second polarizing plate 13
- the polarization direction is rotated so as to coincide with each other, and the second polarizing plate 13 is transmitted. Therefore, a good display can be obtained for the viewing angle of the viewpoint P force.
- the applied voltage V is as described above.
- a good display can be obtained in the range of 0 ° ⁇ ⁇ ⁇ 90 ° for the polar angle ⁇ .
- the light emitted from the backlight 3 can be blocked. That is, the display image of the display liquid crystal panel 1 cannot be viewed from the wide viewing angle direction, and the liquid crystal display device 10 can have a narrow viewing angle.
- L to L have a luminance of 130 cd / m 2 or 240 cd.
- the voltage applied to the liquid crystal cell 21 of the viewing angle control panel 2 is switched in at least two stages of the applied voltage V or the applied voltage V,
- the display state of the liquid crystal display device 10 can be switched between a wide viewing angle and a narrow viewing angle.
- a configuration in which a retardation film 4 is further provided between the translucent substrate 21a of the liquid crystal cell 21 and the third polarizing plate 22 may be employed. Is possible. When a narrow viewing angle is obtained by applying an applied voltage V to the liquid crystal cell 21, the orientation shown in Fig. 4
- the retardation film 4 is provided to optically compensate the elliptically polarized light. That is, a retardation film that generates elliptically polarized light that cancels elliptically polarized light generated in the liquid crystal layer of the liquid crystal cell 21 in the narrow viewing angle mode is used as the retardation film 4.
- the three-dimensional refractive index axes N ⁇ ⁇ ⁇ ⁇ of the retardation film 4 are shown in FIG.
- the three-dimensional refractive index axis ⁇ is in the polarization transmission axis X of the second polarizing plate 13.
- the three-dimensional refractive index axis ⁇ is the component parallel to the polarization transmission axis X of the second polarizing plate 13,
- the three-dimensional refractive index axis ⁇ is a component parallel to the normal line of the second polarizing plate 13.
- the force provided by the viewing angle control panel 2 provided on the lower side of the display liquid crystal panel 1 is not necessarily limited thereto.
- the stacking order of the display liquid crystal panel 1 and the viewing angle control panel 2 may be reversed.
- the display liquid crystal panel 1 may be stacked on the knocklight 3 and the viewing angle control panel 2 may be stacked on the display liquid crystal panel 1.
- the display liquid crystal panel 1 may be a transflective liquid crystal panel.
- the surrounding environment in which the viewing angle control panel 2 is used is a power privacy display mode used in an environment where external light hits the liquid crystal display device 10. In this case, the effect becomes more remarkable.
- the shielding power can be improved when used in an environment where external light hits the liquid crystal display device 10.
- the reason for this is that the brighter the external light is, the light reflected from the display liquid crystal panel 1 by the external light enters the eyes, and the light for display by the backlight 3 is not visually recognized.
- the screen display cannot be seen.
- the luminance of the white display portion is A
- the luminance of the black display portion is B.
- the larger the contrast ratio AZB, the easier it is to visually recognize. Therefore, in order to make the display difficult to visually recognize, for example, the reflected light C is irradiated as shown in FIG. As a result, the contrast ratio becomes less visible as (A + C) Z (B + C) approaches 1. Therefore, the larger the reflected light C, the closer to 1.
- the display device system including the liquid crystal display device 10 is provided with a reflected light amount relative increase unit (not shown), and the reflected light amount is relatively increased.
- the amount of reflected light of external light from the periphery of the liquid crystal display device 10 is more than the amount of light leakage from the backlight 3, as shown in FIG. I try to make it relatively larger.
- the light leakage from the backlight 3 means the transmitted light from the backlight 3 that contributes to the display on the surface of the display liquid crystal panel 1, and indicates whether light leakage from the white display portion or the black display portion. It doesn't matter.
- the display device system that can increase the shielding effect and the narrow viewing angle effect.
- the said effect is by this structure.
- This effect is not necessarily limited to the narrow viewing angle mode, but is also effective in the wide viewing angle mode. However, the effect is greater in the narrow viewing angle mode.
- the shielding region of the brightness of the display is 50 cd Zm 2 below are the majority, brightness The shielding area display of the OcdZ m 2 It's not a thing to show! /
- the display brightness in the shielding region be 1 OcdZm 2 or less.
- the light 31 for increasing the amount of reflected light of the liquid crystal display device 10 can be turned on around the liquid crystal display device 10 by increasing the illuminance to the liquid crystal display device 10. .
- the light 31 is provided in a light lighting unit (not shown) in the display device system.
- the light 31 can be provided at the position of at least one of the four sides surrounding the liquid crystal display device 10. That is, the position of the one side may be any of up, down, left and right surrounding the liquid crystal display device 10. Further, as shown in FIG. 10A, lights 31 can be provided on all four sides surrounding the liquid crystal display device 10. This light 31 is turned on by a light lighting section (not shown) of the display system. As a result, by turning on the light 31, it is ensured that the amount of reflected light of the external light of the peripheral power of the liquid crystal display device 10 is relatively larger than the amount of light leakage from the backlight 3. Can be.
- a front light 32 as a light at a position facing an observer who uses the liquid crystal display device 10.
- the front light 32 is provided in front of the observer, the person behind the observer who uses the liquid crystal display device 10 is reflected by the light 31 or the front light 32.
- the light prevents the liquid crystal display device 10 from being visually recognized.
- the liquid crystal display device 10 is provided on the surface side of the display liquid crystal panel 1 and a signal is obtained by touching a part thereof. It is possible to provide a touch panel 5 that allows input. Then, when the operator power S of the liquid crystal display device 10 touches the touch panel 5, the light 31 can be turned on.
- the touch panel 5 is touched.
- light 31 can be turned on. Therefore, the operator who uses the liquid crystal display device 10 should not allow others to see the display contents. Can do.
- an infrared sensor 41 is provided as a human detection sensor for detecting the presence of a person, and the presence of the person is detected by the infrared sensor 41.
- light 31 or front light 32 can be turned on.
- the infrared sensor 41 is provided, for example, on a ceiling, and includes an infrared light emitting unit and an infrared light receiving unit (not shown).
- infrared light When infrared light is emitted from the infrared light emitting unit, the reflected light is received. It senses the presence of people. In other words, if there is a person, the intensity of the reflected light changes, so that the presence of the person can be detected.
- the light 31 or the front light 32 can be turned on when the presence of the person is detected by the infrared sensor 41 that detects the presence of the person. Accordingly, when the operator's power to use the liquid crystal display device 10 is turned on, the light 31 or the front light 32 is turned on, and the amount of light leaking from the knock light 3 is larger than the amount of light from the periphery of the liquid crystal display device 10. The amount of reflected light of the reflected light can be made relatively large.
- a sensor for detecting the presence of this type of person for example, a sensor that reacts to radio waves or visible light may be used.
- the infrared sensor 41 is provided in the ATM 50 of the bank, and the operator of the liquid crystal display device 10 of the ATM 50 is provided. Can be detected directly.
- 12 (a) shows an infrared sensor 41 provided on the upper part of the ATM 50
- FIG. 12 (b) shows an infrared sensor 41 provided on the lower part of the ATM 50.
- An infrared sensor 41 provided below the ATM 50 is effective for wheelchair operators, for example.
- the infrared sensor 41 is not necessarily limited to the reflective type.
- an infrared light emitting unit (not shown) is provided on one pole 42a, and the other A transmission type infrared sensor 43 in which an infrared light receiving portion 43a is provided on the pole 42b can be obtained.
- poles 42a and 42b can be installed so as to sense the operator of the liquid crystal display device 10 of the ATM 50. As a result, the operator of the liquid crystal display device 10 of the ATM 50 can be directly sensed.
- the light 31 or the front light 32 can be used as a sensor for detecting the presence of a person by inputting the cash card 51 for operating the ATM 50 into the ATM 50. Can be lit.
- a human-sensing tread 52 is installed at a position where the operator of the liquid crystal display device 10 stands, and a person is detected on the human-sensing tread 52. It is also possible to let the weight when standing up be perceived.
- a piezoelectric element (not shown) is incorporated in the human sensing panel 52. When a person stands on the human sensing panel 52, the piezoelectric element detects the pressure, and a person exists. Detect what to do.
- an illuminance meter as a peripheral illuminance detection sensor for detecting the illuminance around the liquid crystal display device 10 is provided. 61.
- the light 31 or the front light 32 can be turned on.
- Fig. 15 (a) shows an ATM 50 with a luminometer 61 attached. In this configuration, the illumination around the liquid crystal display device 10 is sensed.
- FIG. 15 (b) shows an example in which an illuminance meter 61 is provided in a room equipped with an ATM 50.
- a threshold value is set in advance for predetermined illuminance. When the illuminance sensed by the illuminance meter 61 falls below this threshold value, the lighting control of the light 31 or the front light 32 is performed.
- the light 31 or the front light 32 is turned on when the illuminance power detected by the illuminometer 61 becomes lower than the set value.
- the light 31 or the front light 32 is turned on to leak light from the knock light 3.
- the amount of reflected light of external light from the periphery of the liquid crystal display device 10 can be made relatively larger than the amount.
- the present invention is not necessarily limited thereto.
- the brightness of the knock light 3 can be reduced.
- the luminance reduction of the backlight 3 is performed by a backlight luminance reduction unit not shown in the display device system.
- the brightness of the knocklight 3 is reduced, and the amount of reflected light of external light from the periphery of the liquid crystal display device 10 is relatively larger than the amount of light leakage from the knocklight 3. It can be
- FIGS. 16 (a), 16 (b), and 16 (c) at least part of the periphery of the liquid crystal display device 10 is used.
- a reflecting plate 71, a reflecting sheet 72, or an aluminum material 73 as a reflecting member for increasing the illuminance to the liquid crystal display device 10.
- the illuminance to the liquid crystal display device 10 is increased, and the amount of reflected light of the liquid crystal display device 10 is increased. be able to. Therefore, the reflected light amount of the reflected light of the external light from the periphery of the liquid crystal display device 10 is relatively larger than the light leakage amount from the backlight 3 due to the lighting of the light or the decrease of the brightness of the knock light 3. The effect of making can be further improved.
- FIG. 16 (a) it is possible to include a reflecting plate 71 standing around the ATM 50.
- the reflecting plate 71 is a screen type, and the angle of opposition to the liquid crystal display device 10 can be changed so that light can be condensed on the liquid crystal display device 10. Thereby, the visual recognition of the display of the liquid crystal display device 10 from a desired direction can be suppressed.
- the facing angle to the liquid crystal display device 10 is not necessarily changeable.
- a reflector provided on the ceiling may be used.
- a reflection sheet 72 as a reflection member can be provided at a position facing an observer who uses the liquid crystal display device 10.
- the external light is reflected by the reflection sheet 72 provided at the position facing the observer who uses the liquid crystal display device 10. Therefore, for example, a person who is behind the observer who uses the liquid crystal display device 10 is prevented from visually recognizing the display of the liquid crystal display device 10 by the reflected light from the reflection sheet 72.
- the liquid crystal display device 10 includes a front light 32, An aluminum material 73 as a reflective member can be laid around the liquid crystal display device 10. Thereby, the illuminance to the liquid crystal display device 10 can be further increased.
- the reflecting member is not necessarily limited to the aluminum material 73.
- the surface of the ATM 50 can be easily reflected by a reflecting member such as silver plating or aluminum plating. .
- a liquid crystal display device 10 in which the first polarizing plate 12 on the surface shown in FIG. 2 has been subjected to diffusion treatment.
- AG Anti Glar
- This AG treatment means glare prevention (reflection) treatment.
- it is one of the methods for avoiding specular reflection on the glass surface or the like, and a process of applying a rough surface film or a force that makes the surface of the first polarizing plate 12 a little rough is performed. As a result, for example, background reflection can be prevented.
- the narrow viewing angle control effect of the viewing angle control panel 2 is enhanced as compared with the case where the first polarizing plate 12 that is not subjected to the diffusion treatment is provided.
- the viewing angle can be controlled by switching between light transmission and shielding rather than reducing the contrast of display on the wide viewing angle side.
- the shielding effect can be increased.
- the display panel is preferably a display liquid crystal panel 1.
- the display liquid crystal panel 1 may be a deviation from a transmissive liquid crystal display panel, a reflective liquid crystal display panel, or a transflective liquid crystal display panel.
- the present invention can be applied to a display device system including a display device such as a liquid crystal display device including a backlight, a display panel, and a viewing angle control panel for controlling the viewing angle of the display panel.
- a display device such as a liquid crystal display device including a backlight, a display panel, and a viewing angle control panel for controlling the viewing angle of the display panel.
- the liquid crystal display device can be applied, for example, to a transmissive liquid crystal display device, a reflective liquid crystal display device, or a transflective liquid crystal display device.
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Abstract
Description
Claims
Priority Applications (6)
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CN2006800540130A CN101405645B (zh) | 2006-05-31 | 2006-12-21 | 显示装置*** |
US12/294,146 US7956940B2 (en) | 2006-05-31 | 2006-12-21 | Display system |
EP06842992A EP2023191B1 (en) | 2006-05-31 | 2006-12-21 | Display system |
JP2008517779A JP4995195B2 (ja) | 2006-05-31 | 2006-12-21 | 表示装置システム |
HK09106403.9A HK1127133A1 (en) | 2006-05-31 | 2009-07-15 | Display system |
HK09106499.4A HK1128773A1 (en) | 2006-05-31 | 2009-07-16 | Display system |
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JP2006152825 | 2006-05-31 | ||
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EP (1) | EP2023191B1 (ja) |
JP (1) | JP4995195B2 (ja) |
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CN (1) | CN101405645B (ja) |
HK (2) | HK1127133A1 (ja) |
WO (1) | WO2007138732A1 (ja) |
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- 2006-12-21 KR KR1020087027785A patent/KR100968669B1/ko not_active IP Right Cessation
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WO2011129131A1 (ja) * | 2010-04-12 | 2011-10-20 | シャープ株式会社 | 表示装置 |
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Also Published As
Publication number | Publication date |
---|---|
EP2023191A4 (en) | 2011-06-29 |
HK1127133A1 (en) | 2009-09-18 |
CN101405645A (zh) | 2009-04-08 |
KR20090005178A (ko) | 2009-01-12 |
CN101405645B (zh) | 2011-04-06 |
US7956940B2 (en) | 2011-06-07 |
EP2023191B1 (en) | 2012-10-17 |
EP2023191A1 (en) | 2009-02-11 |
US20090102989A1 (en) | 2009-04-23 |
JPWO2007138732A1 (ja) | 2009-10-01 |
HK1128773A1 (en) | 2009-11-06 |
KR100968669B1 (ko) | 2010-07-06 |
JP4995195B2 (ja) | 2012-08-08 |
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