WO2007013272A1 - Dispositif d'affichage et dispositif de rétroéclairage - Google Patents

Dispositif d'affichage et dispositif de rétroéclairage Download PDF

Info

Publication number
WO2007013272A1
WO2007013272A1 PCT/JP2006/313422 JP2006313422W WO2007013272A1 WO 2007013272 A1 WO2007013272 A1 WO 2007013272A1 JP 2006313422 W JP2006313422 W JP 2006313422W WO 2007013272 A1 WO2007013272 A1 WO 2007013272A1
Authority
WO
WIPO (PCT)
Prior art keywords
display panel
display
display device
imaging unit
imaging
Prior art date
Application number
PCT/JP2006/313422
Other languages
English (en)
Japanese (ja)
Inventor
Osamu Teranuma
Hiromi Katoh
Toshio Shimosako
Yasukuni Yamane
Original Assignee
Sharp Kabushiki Kaisha
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 Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Publication of WO2007013272A1 publication Critical patent/WO2007013272A1/fr

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0425—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected
    • 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
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13312—Circuits comprising photodetectors for purposes other than feedback

Definitions

  • the present invention relates to a display device typified by a liquid crystal display device or an EL display device, and more particularly to a display device having an image input function.
  • Patent Document 1 An example of such a display device is a display device with a touch panel (see, for example, Patent Document 1).
  • the display device disclosed in Patent Document 1 guides light irradiated with projector power to the display area.
  • the touch position is detected by receiving, with a CCD camera, the light reflected from the user's finger placed on the display area.
  • a liquid crystal display device configured to be able to capture an image itself is also disclosed (for example, see Patent Document 2).
  • the display device disclosed in Patent Document 2 includes a plurality of photodiodes arranged in a matrix on an active matrix substrate, thereby capturing an image of an object on a display screen.
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-350586 (Fig. 1)
  • Patent Document 2 Japanese Patent Laid-Open No. 2004-159273 (Figs. 2 to 3)
  • Patent Document 1 since the display device disclosed in Patent Document 1 requires the use of a projector, there is a problem that the noise caused by the power supply fan is large, a problem that the amount of heat generation is large, and the entire device is downsized. There is a problem that you can not.
  • the display device disclosed in Patent Document 2 has a configuration that enables capturing of an image
  • the display device disclosed in Patent Document 2 does not include an imaging optical system. It is impossible to obtain a correct captured image.
  • the display device of Patent Document 2 has a high resolution. There is a problem that it is impossible to perform image capturing at an image level.
  • An object of the present invention is to solve the above-described problems, and can be reduced in size and size with a small amount of heat generation, and a liquid crystal display device and a display device capable of capturing an image with high resolution. And a backlight device used in a liquid crystal display device.
  • a display device includes a display panel having light transmittance and an imaging unit having an imaging optical system, and the imaging unit is configured to display the display panel from an observer side. And receiving the light passing through the display panel and the imaging optical system, and imaging the state of the display panel on the viewer side.
  • a backlight device is a backlight device for illuminating a liquid crystal display panel, and includes a light source and an imaging unit having an imaging optical system.
  • the imaging unit is disposed inside the backlight device, and receives light that enters the liquid crystal display panel from the observer side and passes through the liquid crystal display panel and the imaging optical system. Then, the state on the viewer side of the liquid crystal display panel is photographed.
  • the display device of the present invention since an image can be displayed using the display panel, it is possible to achieve a reduction in heat generation, noise reduction, and size reduction. Furthermore, in the display device according to the present invention, since the imaging unit includes the imaging optical system, it is possible to capture an image with higher resolution than a display device having a conventional input function. Further, when the backlight device according to the present invention is attached to a liquid crystal display device, a liquid crystal display device capable of capturing an image with high resolution can be obtained.
  • FIG. 1 is a cross-sectional view showing a schematic configuration of a display device according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 3 is a cross-sectional view showing a schematic configuration of an image pickup unit provided in the display device shown in FIGS. 1 and 2.
  • FIG. 4 is a diagram showing a schematic configuration of a detection light source provided in the display device shown in FIG. 1 and FIG. 2, and FIG. 4 (a) is cut along the emission direction of the detection light.
  • a cross-sectional view and Fig. 4 (b) are front views.
  • FIG. 5 is a view showing another example of the detection light source
  • FIG. 5 (a) is a cross-sectional view cut along the emission direction of the detection light
  • FIG. 5 (b) is a front view.
  • FIG. 6 is a diagram showing transmittance spectral characteristics of a color filter.
  • FIG. 7 is a diagram showing transmittance spectral characteristics of polarizing plates constituting a liquid crystal display panel.
  • FIG. 8 is a block diagram showing a configuration of a control device provided in the display device shown in FIGS. 1 and 2.
  • FIG. 9 is a cross-sectional view showing a schematic configuration of the display device in the second embodiment of the present invention.
  • FIG. 10 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 11 is a cross-sectional view showing a schematic configuration of an imaging unit provided in the display device shown in FIGS. 9 and 10.
  • FIG. 12 is a diagram showing the outer shape of the image captured by the imaging unit shown in FIGS. 9 to 11 and the outer shape of the image after correction.
  • FIG. 13 is a block diagram showing a configuration of a control device provided in the display device shown in FIGS. 9 and 10.
  • FIG. 14 is a cross-sectional view showing a schematic configuration of the display device according to Embodiment 3 of the present invention.
  • FIG. 15 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 16 is a cross-sectional view showing a schematic configuration of the display device in the fourth embodiment of the present invention.
  • FIG. 17 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 18 is a cross-sectional view showing a schematic configuration of the display device in the fifth embodiment of the present invention.
  • FIG. 19 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 20 is a cross-sectional view showing a schematic configuration of the display apparatus in the sixth embodiment of the present invention.
  • FIG. 21 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 22 is a cross-sectional view showing a schematic configuration of the display device in the seventh embodiment of the present invention.
  • FIG. 23 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 24 is a cross-sectional view showing a schematic configuration of the display apparatus according to Embodiment 8 of the present invention.
  • FIG. 25 is a cross-sectional view showing a schematic configuration of another example of the display device according to Embodiment 8 of the present invention.
  • FIG. 26 is a diagram showing a positional relationship between the detection light source and the imaging unit when the display device shown in FIG. 25 is viewed from the observer side.
  • FIG. 27 is a cross-sectional view showing a schematic configuration of the display apparatus according to Embodiment 9 of the present invention.
  • a display device includes a light-transmissive display panel and an imaging unit having an imaging optical system, and the imaging unit is incident on the display panel from the observer side. And the light which passes the said display panel and the said imaging optical system is received, and the state in the observer side of the said display panel is imaged, It is characterized by the above-mentioned.
  • the “display panel having light transmittance” means a display panel having a property of transmitting light from at least the viewer side to the back surface side.
  • Such a display panel is also included in the display panel having light transmittance.
  • the display device includes a detection light source that emits detection light to the viewer side of the display panel, and the imaging unit is incident on the display panel from the viewer side.
  • the detection light passing through the display panel and the imaging optical system is received to capture the state of the display panel on the viewer side (first aspect).
  • the resolution of the captured image can be improved.
  • a light emitting diode can be used as the detection light source.
  • the imaging unit receives only light having a wavelength of 700 nm or more, particularly 800 nm or more.
  • the imaging unit preferably has an optical filter that transmits only light having a wavelength of 700 nm or more, particularly 800 nm or more.
  • the detection light source emits light having a wavelength of 700 nm or more, particularly 800 nm or more and lOOOnm or less as the detection light.
  • the imaging unit has a region overlapping with the display region of the display panel in the thickness direction of the display panel on the back side of the display panel. It is preferable to adopt an aspect (second aspect) arranged around the periphery. If it is set as the said 2nd aspect, since the imaging part does not overlap with a display area in the thickness direction of a display panel, it can be arrange
  • the imaging unit includes a solid-state imaging device that receives an image formed by the imaging optical system, and the optical axis of the imaging optical system is the display
  • the solid-state imaging device has a light receiving surface parallel to the display region, and a normal passing through the center of the light receiving surface of the solid-state imaging device. You may arrange
  • the imaging unit includes a solid-state imaging device that receives an image formed by the imaging optical system, and a light-receiving surface of the solid-state imaging device.
  • the normal line passing through the center of the imaging optical system and the optical axis of the imaging optical system are arranged so as to be inclined toward the display area. It may be.
  • the imaging optical system can be simplified and the lens elements constituting the imaging optical system can be reduced in diameter, and the imaging unit can be made compact.
  • the design cost can be reduced.
  • the display device further includes a backlight device that illuminates the display panel from the back side when the display panel is a liquid crystal display panel.
  • a backlight device that illuminates the display panel from the back side when the display panel is a liquid crystal display panel.
  • the imaging region can be positioned in front of the imaging unit, the captured image can be prevented from being distorted in a trapezoidal shape.
  • the configuration of the display device can be simplified.
  • an opening is formed in a region overlapping with an optical path of light received by the imaging unit in the optical layer of the backlight device. That's right.
  • an optical layer having a higher light transmittance than the optical layer may be disposed inside the opening.
  • an area overlapping the optical path of light received by the imaging unit in the optical layer of the backlight device is formed such that the light transmittance is higher than other areas in the optical layer. It is also preferable. In these cases, the light incident on the imaging unit can be prevented from being scattered, reflected, or further attenuated by the optical layer.
  • each of the plurality of imaging units is capable of imaging the state on the observer side in different regions within the display region of the display panel. It is preferable to adopt the embodiment (fourth embodiment). According to the fourth aspect, the imaging area of each imaging unit can be narrowed compared to the case where a single imaging unit is not provided with force, and the optical imaging distance (focal length) required by the imaging unit The display device can be shortened and the display device can be thinned.
  • adjacent regions partially overlap each other among regions captured by the plurality of imaging units. In this case, the position of the subject can be accurately recognized.
  • the focusing range of the imaging optical system is: It should be set within the lcm range from the display area of the display panel to the viewer. As a result, the subject on the display area can be imaged more clearly.
  • the detection light source may be arranged in a region around the display region of the display panel. In this case, the light loss can be reduced.
  • the detection light source may be the display panel.
  • the display panel In the thickness direction of the display panel, the display panel may be arranged around a region overlapping with the display region. In this case, the degree of freedom in design of the front side of the display device can be increased.
  • the display device further includes a backlight device that illuminates the display panel also with a back side force
  • the light device includes a light source and an optical layer disposed on the display panel side of the light source, the detection light source is emitted into the backlight device, and the detection light is emitted toward the display panel.
  • the embodiment (fifth embodiment) can also be adopted.
  • the light amount distribution of the detection light on the display area can be made uniform, and imaging that is not affected by the position of the subject can be performed.
  • the display device includes a backlight device as in the third and fifth embodiments
  • a light emitting diode can be used as a light source of the backlight device.
  • the area of the light emitting region of the backlight device is preferably larger than the area of the display region of the display panel. Accordingly, even when the distance between the display panel and the backlight device is long, the display panel can be sufficiently illuminated.
  • the imaging unit is provided on the back side of the display panel in the thickness direction of the display panel. It is preferable to be arranged in an area overlapping with the display area of the display panel! In this case, since the imaging region can be positioned in front of the imaging unit, the captured image can be prevented from being distorted in a trapezoidal shape.
  • the detection light source is arranged on the back side of the display panel.
  • the detection light source is arranged around a region overlapping the display region in the thickness direction of the display panel. This is to prevent the detection light source from interfering with the imaging by the imaging unit.
  • the image processing device and detection for irradiating detection light toward the main surface on the viewer side of the display panel if the display panel is a liquid crystal display panel.
  • Receiving the detection light, imaging the state of the display panel on the viewer side, and further outputting imaging data, and the backlight device is disposed on the display panel side of the light source and the light source
  • the image processing device also subtracts an offset component from the imaging data force output from the imaging unit, and the offset component is incident on the display area of the display panel from the outside.
  • an antireflection treatment is performed on the surface of the display panel opposite to the viewer side.
  • the observer side of the display panel further includes a transparent plate that covers the display area of the display panel, and the transparent plate is connected to the display area.
  • the detection light source is arranged in a region around the display region of the display panel so that the detection light is incident on the transparent plate from the space. It is preferable. In this case, the detection light emitted from the detection light source can be prevented from entering the display panel without reaching the subject, and the utilization efficiency of the detection light can be improved.
  • the imaging unit includes the display panel. On the back side of the display panel in the thickness direction of the display panel, and is arranged around the area overlapping the display area of the display panel, and the imaging direction of the imaging unit and the emission direction of the detection light source are the observer. It is preferable that they cross each other when viewed from the side. Specifically, if the display area has a rectangular shape, the detection light source is arranged along one side of the display area or the one side and a side opposite to the one side. The imaging unit force is configured to be arranged along a side adjacent to the one side when viewed from the observer side.
  • the backlight device is a backlight device for illuminating a liquid crystal display panel, and includes a light source and an imaging unit having an imaging optical system, and the imaging unit includes the backlight unit.
  • the light device is arranged inside the light device, receives light that is incident on the liquid crystal display panel and passes through the liquid crystal display panel and the imaging optical system, and is received by the observer of the liquid crystal display panel. The state on the side is imaged.
  • the backlight device includes a detection light source that emits detection light toward the main surface of the liquid crystal display panel on the observer side, and the detection light source includes the backlight device.
  • the imaging unit Arranged inside the light device, the imaging unit receives the detection light incident on the liquid crystal display panel from the observer side and passing through the liquid crystal display panel and the imaging optical system; It is preferable to take an image of the state of the liquid crystal display panel on the viewer side. In this case, the input function added to the liquid crystal display device can be further enhanced.
  • the optical device further includes an optical layer disposed on the liquid crystal display panel side of the light source, and optical light received by the imaging unit in the optical layer of the backlight device. It is preferable that an opening is formed in a region overlapping the target path. At this time, an optical layer having a higher light transmittance than the optical layer may be disposed inside the opening.
  • the optical layer further includes an optical layer disposed on the liquid crystal display panel side of the light source, and an area overlapping with an optical path of light received by the imaging unit in the optical layer of the backlight device is in the optical layer. Light transmission compared to other areas It is also preferable that it is formed so as to increase the rate. In these cases, it is possible to suppress light incident on the imaging unit from being scattered, reflected, or further attenuated by the optical layer.
  • FIG. 1 is a cross-sectional view showing a schematic configuration of the display device according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • the display device includes a liquid crystal display panel 2 and an imaging unit 4 having an imaging optical system (not shown).
  • the imaging unit 4 receives the light incident on the liquid crystal display panel 2 and passing through the liquid crystal display panel 2 and the imaging optical system, and images the state of the liquid crystal display panel 2 on the viewer side. To do.
  • the imaging unit 4 causes the reflected light from the subject 1 (human fingertip) on the display area 3 of the liquid crystal display panel 2 to pass through the liquid crystal display panel 2. It is arranged to enter the imaging optical system. The imaging unit 4 receives the light that has entered the imaging optical system and passed through it, and images the subject 1 using this light. The configuration of the imaging unit 4 will be further described later.
  • the display device is a detection light source that emits detection light toward the space on the viewer side of the liquid crystal display panel 2, that is, toward the subject 1. 7 is further provided. Therefore, in the first embodiment, the imaging unit 4 is detected light that enters the liquid crystal display panel from the observer side and passes through the liquid crystal display panel 2 and the imaging optical system, that is, the subject 1. Imaging is performed by receiving the reflected detection light. This point will be described later.
  • the display device is a transmissive liquid crystal display device, and includes a backlight device 5 that illuminates the liquid crystal display panel 2 with the back side force of the display region 3.
  • the liquid crystal display panel 2 includes an active matrix substrate 2c, a liquid crystal layer 2b, and a filter substrate (counter substrate) 2a.
  • the liquid crystal layer 2b includes an active matrix substrate 2c and a filter substrate 2a. Is sandwiched between. Illustration of a seal for sealing the liquid crystal layer 2b is omitted.
  • a polarizing plate (not shown) is provided on the surface opposite to the liquid crystal layer 2b side in each of the filter substrate 2a and the active matrix substrate 2c.
  • a plurality of active elements (not shown) arranged in a matrix are formed on the active matrix substrate 2c.
  • the active element constitutes a pixel, and is a region force display region 3 that overlaps with the region in which the pixel is provided in the thickness direction (indicated by a thick line arrow in FIG. 1).
  • the active matrix substrate 2c is provided with a drive circuit such as a gate drive circuit and a source drive circuit.
  • a plurality of color filters (not shown) corresponding to each pixel and a counter electrode are formed on the filter substrate 2a.
  • the backlight device 5 is a direct type backlight device, and includes a plurality of fluorescent lamps 6 and an optical layer 13.
  • the plurality of fluorescent lamps 6 are arranged in a bathtub-type casing 8 in a state of being parallel to each other (see FIG. 2).
  • a reflective sheet is attached to the inner surface of the housing 8.
  • the optical layer 13 is formed by laminating a diffusion plate 9, a diffusion sheet 10, a prism sheet 11, and a reflective Z-polarizing sheet 12 in this order.
  • the imaging unit 4 is between the liquid crystal display panel 2 and the backlight device 5 on the back side of the liquid crystal display panel 2 and in the thickness direction of the liquid crystal display panel 2. It is arranged around the area (or space) that overlaps display area 3. In this case, since the imaging unit 4 does not overlap the display region 3 in the thickness direction of the liquid crystal display panel 2, it can be arranged without being restricted by the liquid crystal display panel 2 or the backlight device 5.
  • the liquid crystal display panel 2 and the backlight device 5 are separated from each other compared to the conventional case. Is placed. Specifically, the liquid crystal display panel 2 and the backlight device 5 are held at a certain distance L by the frame 20, and a cavity exists between them. The imaging unit 4 is also held in the frame 20.
  • the distance L between the liquid crystal display panel 2 and the backlight device 5 is set to about 15 cm.
  • a transparent resin material is filled between the liquid crystal display panel 2 and the backlight device 5 to increase the strength of the display device. You may do it.
  • the backlight device 5 since the distance between the liquid crystal display panel 2 and the backlight device 5 is large, as shown in FIGS. 1 and 2, the backlight device 5 has a light emitting region area larger than the display region 3 area. It is preferable to make it large. This is because the irradiation area of the liquid crystal display panel 2 tends to decrease as the distance between the liquid crystal display panel 2 and the backlight device 5 increases.
  • each of the plurality of imaging units 4 is arranged so as to be able to image the state on the observer side in different areas in the display area 3.
  • the imaging area of each imaging unit 4 can be narrowed and the optical imaging distance required by the imaging unit 4 can be shortened compared to the case where a single imaging unit is not provided. Can do. Therefore, compared with the case where a single imaging unit is not provided, the distance between the liquid crystal display panel 2 and the backlight device 5 can be shortened, and the display device can be made thinner.
  • the imaging areas of each of the plurality of imaging units 4 are set so that adjacent imaging areas partially overlap each other in order to accurately recognize the position of the subject 1. preferable.
  • the imaging unit 4 captures an object existing on the display area 3 as the subject 1, the focusing range of the imaging optical system of the imaging unit 4 is near the surface of the liquid crystal display panel, for example, the display area. It is preferable to set within the range of lcm from 3 to the viewer side.
  • the detection light source 7 is arranged in an area around the display area 3 in order to reduce a light amount loss. Specifically, four detection light sources 7 are provided, and each detection light source 7 is arranged so as to surround the display region 3 along one side of the display region 3. Each detection light source 7 emits detection light toward the detection light source 7 at the facing position.
  • the number of detection light sources 7 is not particularly limited. For example, the number of the detection light sources 7 may be two, and the detection light sources 7 may be arranged only on two opposite sides. In FIG. 1, the illustration of the detection light source 7 that does not appear in the cross section is omitted.
  • FIG. 3 is a cross-sectional view illustrating a schematic configuration of an imaging unit provided in the display device illustrated in FIGS.
  • the imaging unit 4 A lens element 30 constituting the academic system, a solid-state imaging element 32 that receives an image formed by the lens element 30, and an optical filter that transmits only light having a wavelength equal to or greater than a set wavelength (a noise filter) 31 And.
  • the solid-state imaging device 32 is a solid-state imaging device such as a CCD solid-state imaging device or a MOS solid-state imaging device. The function of the optical filter 31 will be described later.
  • the lens element 30 and the solid-state image sensor 32 constitute a so-called shift optical system.
  • the normal line 32a passing through the center of the light receiving surface of the solid-state image sensor 32 and the optical axis 30a of the lens element 30 are parallel, and the optical axis 30a is the normal line. It is held in the frame 33 in a state shifted from 32 a.
  • the imaging unit 4 has the light receiving surface of the solid-state imaging device 32 parallel to the display region 3, and the normal line 32 a of the solid-state imaging device 32 is It is arranged so as to be located outside the display area 3 relative to the optical axis 30a.
  • the shift optical system since the shift optical system is employed, an image with little trapezoidal distortion is formed on the light receiving surface of the solid-state imaging element 32. Therefore, according to the first embodiment, an image with excellent image quality can be obtained without performing correction for improving the trapezoidal distortion on the imaging data output by the imaging unit 4.
  • the “imaging optical system” has a focal point in the vicinity of the surface of the liquid crystal display panel and the light receiving surface of the imaging unit, and an image in the vicinity of the surface of the liquid crystal display panel This is the lens system that forms an image. Therefore, in the example of FIG. 3, the imaging optical system may be configured by a lens group including a plurality of lens elements that are configured by only the lens element 30. However, in the case of constituting a shift optical system, the imaging optical system needs to be designed so that the oblique light is not kicked and transmitted through the lens system. In this case, the imaging optical system needs to be configured by a lens system having a large aperture as compared with the case where the shift optical system is not configured.
  • FIG. 4 is a diagram showing a schematic configuration of the detection light source provided in the display device shown in FIGS. 1 and 2, and FIG. 4 (a) is a cross-sectional view taken along the emission direction of the detection light.
  • Figure 4 (b) is a front view.
  • FIG. 5 is a view showing another example of the detection light source, FIG. 5 (a) is a cross-sectional view cut along the direction of emission of the detection light, and FIG. 5 (b) is a front view.
  • the detection light source 7 is shown in a simplified manner. As shown in FIGS. 4A and 4B, the detection light source 7 includes a plurality of light emitting diodes 21.
  • each light emitting diode 21 The wavelength of light emitted from each light emitting diode 21 is set in advance as will be described later.
  • the plurality of light emitting diodes 21 are arranged in a row inside the frame 23 so that the emission surfaces are aligned.
  • the light emitting diodes 21 are individually molded with grease.
  • Reference numeral 22 denotes a resin mold.
  • the frame 23 is formed in a box shape having an opening on the emission direction side.
  • An optical sheet 24 including a diffusion sheet is attached to the opening on the emission direction side of the frame 23 to enable surface emission.
  • a reflection sheet is attached to the inner surface of the frame 23. In FIG. 4B, the optical sheet 24 is not shown.
  • the detection light source 7 is arranged around the display area 3, the detection light is applied to the object 1 regardless of the position of the object 1 (see Fig. 1) on the display area 3, The reflected light is received by the imaging unit 4. Further, the number of light emitting diodes 21 to be arranged is not particularly limited, and may be set so as to obtain a necessary light amount according to the size of the display area 3 (see FIGS. 1 and 2).
  • the detection light source 25 shown in FIG. 5 can be used instead of the detection light source 7.
  • the detection light source 25 includes a plurality of light emitting diodes 21 molded by grease.
  • the detection light source 25 includes a light guide plate 26.
  • the light guide plate 26 is formed in a rectangular parallelepiped shape, and each light emitting diode 21 is disposed so as to face the end surface of the light guide plate 26 positioned in the long axis direction. The light emitted from each light emitting diode 21 is repeatedly reflected on the inside of the light guide plate 26 and then emitted from the side surface on the emission direction side.
  • the frame 27 is formed in a box shape having an opening on the emission direction side. Further, similarly to the example of FIG. 4, an optical sheet 28 including a diffusion sheet is attached to the opening of the frame 27 on the emission direction side. A reflective sheet is also attached to the inner surface of the frame 27. Also in FIG. 5B, the optical sheet 28 is not shown.
  • surface emission can be performed by a smaller number of the light emitting diodes 21 than in the example of FIG. 4, so that power consumption can be reduced. so wear.
  • two light emitting diodes 21 are arranged for each end face, but the number of light emitting diodes 21 is not particularly limited.
  • FIG. 6 is a diagram showing the transmittance spectral characteristics of the color filter.
  • the horizontal axis indicates the light wavelength [nm]
  • the vertical axis indicates the transmittance [%].
  • Fig. 6 shows the transmittance for each of the blue, green and red color filters.
  • FIG. 7 is a diagram showing the transmittance spectral characteristics of the polarizing plate constituting the liquid crystal display panel.
  • the horizontal axis indicates the wavelength [nm] of transmitted light
  • the vertical axis indicates the transmittance [%].
  • FIG. 7 shows a case where two polarizing plates are arranged in a parallel-col arrangement and a case where they are arranged in an orthogonal-col arrangement.
  • the detection light reflected by the subject 1 passes through the liquid crystal display panel 2 and then enters the imaging unit 4. At this time, the detection light is transmitted to the liquid crystal display panel. It must pass through the 2 color filter and polarizing plate. Therefore, in order to allow the detection light to easily pass through the color filter and the polarizing plate, the wavelength of the detection light should be set in the infrared region as shown in FIG. 6 and FIG.
  • the lower limit of the wavelength of the detection light is set to 700 nm or more, preferably 800 nm or more, and particularly preferably 850 nm or more.
  • the upper limit of the wavelength of detection light is preferably less than lOOOnm! /.
  • the imaging unit 4 may be configured to receive only light having a wavelength of 700 ⁇ m or more, preferably 800 nm or more, and particularly preferably 850 nm or more.
  • a high-pass filter that transmits only light having a wavelength of 700 nm or more, preferably 800 nm or more, particularly preferably 850 nm or more may be used.
  • the optical image of the subject 1 on the display area 3 is formed on the light receiving surface by the imaging optical system. Therefore, by using the display device according to the first embodiment, it is possible to obtain a clearer optical image as compared with the conventional case, and to capture an image with high resolution.
  • a liquid crystal display panel is used, heat generation can be suppressed, noise reduction, and size reduction can be achieved.
  • Embodiment 1 it is possible to remove noise caused by visible light by using light having a wavelength in the infrared region to image a subject. Therefore, according to the first embodiment, for example, complicated figures such as QR codes, characters, and the like can be captured clearly.
  • the imaging unit 4 outputs the captured optical image as imaging data.
  • the display device performs control such as image processing based on the imaging data. Don't worry about equipment.
  • FIG. 8 is a block diagram showing a configuration of a control device provided in the display device shown in FIGS.
  • the display device 110 includes a control device 109 that performs image processing and the like based on the imaging data output from the imaging unit 4.
  • the control device 109 mainly includes an image processing device 100, an image input control device 105, and a display control device 107.
  • the control device 109 is connected to the external device 108.
  • Examples of the external device 108 include various devices that output video signals to a display device such as a personal computer, a game device, a TV tuner, a DVD player, and a home appliance.
  • the image input control device 105 requests the imaging unit 4 to output imaging data in response to an instruction by a control signal from the external device 108.
  • Each of the plurality of imaging units 4 outputs imaging data to the image input control device 105 when an output request is notified by the control signal from the image input control device 105.
  • the image input control device 105 stores the imaging data in the memory 106 for each imaging unit 4 and then outputs each imaging data to the image processing device 100.
  • the image input control device 105 performs an imaging instruction, sensitivity setting, resolution setting, and the like for the solid-state imaging device 32 (see FIG. 3) of the imaging unit 4 in response to an instruction by the control signal of the external device 108.
  • Each piece of image data input to the image processing apparatus 100 is first combined by the image composition unit 101 into one piece of image data and sent to the noise removal unit 102.
  • the noise removal unit 102 subtracts the offset component from the imaging data output by the image synthesis unit 101. Further, the noise removing unit 102 removes the display component from the imaging data after the offset component is removed. Thereafter, the noise removal unit 102 outputs the obtained imaging data to the image recognition unit 103.
  • the offset component is irradiated from the backlight device 5 (see FIG. 1) and then reflected on the surface of the constituent member of the display device 110, the interface between the constituent members, etc.
  • the display component is a light amount component incident on the imaging unit 4 from the outside via the liquid crystal display panel 2. The display component varies depending on the image displayed in the display area.
  • the set reference data force is calculated, and the above processing is performed using the calculated value.
  • the offset component is preset and stored in a memory (not shown) provided in the image processing apparatus 100.
  • the reference data for calculating the display component is set in advance and stored in a memory (not shown) provided in the image processing apparatus 100.
  • the offset component can be set, for example, by the following procedure. First, it is assumed that light from the outside to the display area 3 is blocked. For example, the display device is placed in a dark room, or the display region 3 is covered with a sheet or dark curtain that transmits infrared light (detection light) but does not transmit visible light. Further, it is assumed that there is no object as a subject on the display area 3.
  • the light source of the backlight device 5 is turned on and the detection light source 7 is irradiated with detection light, and imaging data output by the imaging unit 4 at this time is acquired.
  • the imaging data acquired at this time that is, the light amount component incident on the solid-state imaging device 32 of the imaging unit 4 in the above state becomes the offset component.
  • the setting of the offset component can be performed at the factory shipment stage of the display device, or can be performed by the user at any time after the use is started.
  • the setting of reference data for calculating display components can be performed, for example, by the following procedure. First, under the installation environment of the display device 110, it is assumed that there is no object to be a subject on the display area 3. Next, the external light component passes through the liquid crystal display panel 2. Acquisition of the maximum and minimum values of the imaging data output by the imaging unit 4, that is, the imaging data when the liquid crystal display panel 2 is in the white display state and the black display state. . Next, the output width of the display component due to the incidence of the external light component in the installation environment of the display device 110 is calculated from the acquired imaging data. The output width data calculated at this time becomes data (reference data) for calculating the display component. If the use environment of the display device 110 is the same, the setting operation described above may be performed once at the time of installation.
  • the display component is calculated from the gradation level of the display image obtained from the video signal and the output width (reference data) calculated in advance under the situation where the display device 110 is used.
  • the above-described removal of the display component is performed by the following procedure.
  • the noise removing unit 102 extracts the gradation level of the display image from the video signal output from the external device 108, and calculates a display component from the extracted gradation level and reference data.
  • the noise removing unit 102 subtracts the display component from the imaging data output by the imaging unit 4 at this time. Further, as described above, since the display component varies depending on the image displayed in the display area, it is necessary to calculate the display component as needed according to the change in the display state.
  • the image recognition unit 103 specifies the image and position of the subject based on the captured image data from which noise has been removed, and outputs these to the external device 108 as image data.
  • the external device 108 performs various types of processing using the input image data, and outputs a video signal reflecting the processing to the display control unit 107. Examples of processing performed by the external device 108 include cursor movement processing and click operation processing if the external device 108 is a personal computer.
  • the display control device 107 generates a control signal based on the video signal and outputs it to a drive circuit (not shown) of the liquid crystal display panel 2.
  • the control device 109 can be provided by, for example, an IC chip with a built-in CPU.
  • the IC chip can be mounted on a substrate connected to the liquid crystal display panel 2 via, for example, an FPC.
  • the CPU incorporated in the IC chip can function as the display control device 107, the image input control device 105, and the image processing device 100.
  • FIG. 9 is a cross-sectional view showing a schematic configuration of the display device according to Embodiment 2 of the present invention.
  • FIG. 10 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • FIG. 11 is a cross-sectional view illustrating a schematic configuration of an imaging unit provided in the display device illustrated in FIGS.
  • the same reference numerals as those shown in FIGS. 1 to 3 indicate the same members as those shown in FIGS. ing.
  • the display device according to the second embodiment is different from the display device according to the first embodiment in terms of the position of the detection light source 7 and the configuration of the imaging unit 34.
  • the display device in the second embodiment is configured in the same manner as the display device in the first embodiment. Hereinafter, the difference will be specifically described.
  • the imaging unit 34 includes a lens element 35, a solid-state imaging device 32, and an optical filter 31, as in the first embodiment.
  • the lens element 35 and the solid-state imaging device 32 do not constitute a shift optical system.
  • the lens element 35 and the solid-state imaging element 32 are held by the frame 36 so that the optical axis 35a of the lens element 35 and the normal line 32a passing through the center of the light-receiving surface of the solid-state imaging element 32 coincide.
  • the imaging unit 34 includes a normal 32a (see FIG. 11) passing through the center of the light receiving surface of the solid-state imaging device 32, and An optical axis 35a (see FIG. 11) of the lens element 35 (imaging optical system) is disposed in a state inclined toward the display area 3.
  • a plurality of imaging units 34 are arranged on the back side of the display area 3.
  • the detection light source 7 is the same as that shown in FIGS. 4 and 5 in the first embodiment, but unlike the first embodiment, the liquid crystal display panel 2
  • the liquid crystal display panel 2 is disposed on the back side of the liquid crystal display panel 2 in the thickness direction and around the area (or space) overlapping the display area 3. Further, the detection light source 7 is disposed with the optical axis inclined so that the detection light is emitted toward the display region 3. In FIG. 9, illustration of the detection light source 7 that does not appear on the cross section is omitted.
  • the liquid crystal display panel 2 and the backlight device 5 are separated by a frame 37 in order to increase the optical imaging distance of the imaging unit 34 (focal length of the imaging optical system). It is held at a fixed distance.
  • the shape of the frame 37 is different from the shape of the frame 20 shown in FIG. 1 in Embodiment 1, and is formed so that the imaging unit 34 and the detection light source 7 can be held obliquely. .
  • the design on the front side of the display device is more flexible than in the first embodiment.
  • the degree can be increased.
  • the shift optical system is not employed in the imaging unit 34, the diameter of the lens system constituting the imaging optical system can be reduced and the imaging optical system can be simplified as compared with the first embodiment. For this reason, the design cost can be reduced.
  • FIG. 12 is a diagram illustrating the outer shape of the image captured by the imaging unit illustrated in FIGS. 9 to 11 and the outer shape of the corrected image. Further, the horizontal direction in FIG. 12 corresponds to the scanning line direction.
  • FIG. 13 is a block diagram showing a configuration of a control device provided in the display device shown in FIGS.
  • the control device 109 includes an image processing device 100 force image correction unit 104, and is different from the control device according to the first embodiment in this respect. ing.
  • the image data output from the image input control device 105 is first corrected for trapezoidal distortion by the image correction unit 104, and then image synthesis, offset component and display component removal ( (Noise removal), image recognition is performed
  • the image correction unit 104 calculates the upper base A, the lower base B, and the height h of the trapezoidal captured image shown in the upper part of FIG.
  • the calculation of the upper base A, the lower base B, and the height h can also calculate the position of the imaging unit 34, the size and positional force of the imaging region.
  • upper base A, lower base B, height h The calculation can also be performed by arranging a plurality of landmarks in the display area 3 in advance and based on the landmarks included in the captured image.
  • the image correction unit 104 adjusts the scanning line so that the shorter one of the upper base A and the lower base B of the captured image (the lower base B in the second embodiment) is the same as the larger one.
  • the captured image is enlarged while changing the magnification according to the position.
  • the image correction unit 104 enlarges or reduces the captured image so that the height h becomes the original height H. Note that the height H is set in advance from the size of the imaging region.
  • the problem caused by not using the shift optical system in the imaging unit 34 can be solved by image processing after imaging.
  • the optical image of the subject 1 on the display area 3 is imaged on the light receiving surface by the imaging optical system. Therefore, even when the display device according to the second embodiment is used, as in the first embodiment, a clear optical image can be obtained as compared with the conventional one, and an image can be captured at a high resolution.
  • the liquid crystal display panel since the liquid crystal display panel is used, generation of heat can be suppressed, and noise reduction and size reduction can be achieved. Further, in the second embodiment, as in the first embodiment, light having a wavelength in the infrared region can be used to image a subject, and noise caused by visible light can be removed. For this reason, for example, complicated figures such as QR codes and characters can be clearly captured.
  • FIG. 14 is a cross-sectional view showing a schematic configuration of the display device according to Embodiment 3 of the present invention.
  • 15 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • the same reference numerals as those shown in FIGS. 1 and 2 denote the same members as those indicated by the reference numerals in FIGS. Show.
  • the display device according to the third embodiment is that the backlight device 40 includes a detection light source 7 (see FIGS. 4 and 5) inside. This is different from the display device in the first embodiment. Otherwise, the table in the third embodiment is used.
  • the display device is configured in the same manner as the display device in the first embodiment. The differences will be specifically described below.
  • the detection light source 7 is arranged inside the backlight device 40 so that the detection light is emitted toward the liquid crystal display panel 2. Specifically, the detection light source 7 is arranged in an area where the fluorescent lamp 6 is not installed with the emission surface facing upward. Further, since the detection light is light having a wavelength in the infrared region, noise due to visible light is also removed in the third embodiment.
  • the light amount distribution of the detection light on the display region 3 can be made uniform as compared with the first and second embodiments. As a result, imaging that is not affected by the position of the subject 1 can be performed. Further, according to the third embodiment, since the detection light source 7 and the knock light device 40 can be integrated, the configuration of the display device can be simplified and the device size can be reduced compared to the first and second embodiments. ⁇ ⁇ can be planned.
  • Embodiment 3 as in Embodiment 1, a clear optical image can be obtained as compared with the prior art, and image capture at high resolution can be achieved. For example, complicated figures such as QR codes, characters, etc. can be captured clearly.
  • a liquid crystal display panel is used, heat generation can be suppressed, noise reduction, and size reduction can be achieved.
  • FIG. 16 is a cross-sectional view showing a schematic configuration of the display device according to Embodiment 4 of the present invention.
  • FIG. 17 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • the same reference numerals as those shown in FIGS. 1 and 2 denote the same members as those shown in FIGS. Show.
  • the detection light source 7 that does not appear in the cross section is omitted!
  • the backlight device 42 includes the imaging unit 34 used in the second embodiment, and the optical layer 13 further includes It differs from the display device in Embodiment 1 in that the opening 41 is formed.
  • the display device in the fourth embodiment is the same as the display device in the first embodiment. It is configured in the same way. Hereinafter, the difference will be specifically described.
  • knock light device 42 includes imaging unit 34 shown in FIG.
  • the imaging unit 34 is disposed between the adjacent fluorescent lamps 6.
  • the imaging unit 34 has a normal line passing through the center of the light-receiving surface of the solid-state image sensor 32 (see FIG. 11) and an optical axis of the lens element 35 (imaging optical system) parallel to the normal line of the display area 3. It is arranged to become.
  • An opening 41 is formed in the opening.
  • the subject 1 is positioned in front of the imaging unit 34, so that the captured image is prevented from being distorted in a trapezoidal shape, and the captured image is corrected. There is no need to do. Further, there is no need to arrange an imaging unit that employs a shift optical system. Therefore, according to the fourth embodiment, as in the second embodiment, the small diameter of the lens system constituting the imaging optical system, the simplification of the imaging optical system, and the reduction of the design cost are achieved. be able to. Furthermore, according to the fourth embodiment, the image processing of the captured image in the control device can be simplified.
  • the imaging unit 34 can be arranged simply by placing the imaging unit 34 on the housing 8. Therefore, the number of installed imaging units 34 can be easily increased or decreased. It can also be done. Furthermore, since the opening 41 is formed, the detection light reflected by the subject 1 is not scattered, reflected or further attenuated by the optical layer 13 (see FIG. 11). Can be incident. Furthermore, if the backlight device 42 according to the fourth embodiment is used, an imaging function can be easily given to a display device having a conventional power.
  • the fourth embodiment may be an aspect in which an optical layer having a higher light transmittance than the optical layer 13 is disposed inside the opening 41.
  • an optical film having a lower diffusivity than the diffusing plate 9 or the diffusing sheet 10 or a transparent film isotropic force may be fitted into the opening 41.
  • the region overlapping the optical path of the light received by the imaging unit 34 in the optical layer 13 is the other region in the optical layer 13. It may be an embodiment formed so that the light transmittance is higher than that. concrete Alternatively, the diffusion plate 9 or the diffusion sheet 10 in which only the diffusion degree of the region is set low may be used. Furthermore, the aspect which made only the said area
  • the detection light reflected by the subject 1 is not scattered, reflected, or further attenuated by the optical layer 13 as in the example of FIG. 16 described above. Can enter the lens element 35.
  • a clear optical image can be obtained as compared with the conventional one, and an image can be captured at a high resolution. For example, complicated figures such as QR codes, characters, etc. can be captured clearly.
  • heat generation can be suppressed, noise reduction, and size reduction can be achieved.
  • FIG. 18 is a cross-sectional view showing a schematic configuration of the display device in the fifth embodiment of the present invention.
  • FIG. 19 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • the same reference numerals as those shown in FIGS. 1 and 2 denote the same members as those indicated by the reference numerals in FIGS. Show.
  • the detection light source 7 that does not appear in the cross section is omitted!
  • the display device in the fifth embodiment is configured in the same manner as the display device in the fourth embodiment except that the position of the detection light source 7 is different.
  • the detection light source 7 is arranged on the back side of the liquid crystal display panel 2 in the thickness direction of the liquid crystal display panel 2 and around the area overlapping the display area 3. Has been. Further, the detection light source 7 is arranged with the optical axis inclined so that the detection light is emitted toward the display region 3.
  • the knocklight device 42 includes the imaging unit 34 shown in FIG. 11, and the imaging unit 34 is located between the adjacent fluorescent lamps 6. It is arranged in.
  • an opening 41 is formed in the optical layer 13 in a region overlapping with the optical path until the detection light emitted from the detection light source 7 enters the lens element 35 (see FIG. 11). It is.
  • the fifth embodiment it is possible to obtain the effects obtained by the fourth embodiment. Further, according to the fifth embodiment, as in the second embodiment, since the detection light source 7 is not arranged on the display region 3 side, the degree of freedom in design on the front side of the display device can be increased.
  • FIG. 20 is a cross-sectional view showing a schematic configuration of the display device in the sixth embodiment of the present invention.
  • FIG. 21 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • the same reference numerals as those shown in FIGS. 1 and 2 denote the same members as those indicated by the reference numerals in FIGS. Show.
  • the knock light device 43 includes the detection light source 7 in addition to the imaging unit 34 in this respect.
  • the display device in the sixth embodiment is different from the display devices in the fourth and fifth embodiments. In other respects, the display device in the sixth embodiment is configured in the same manner as the display devices in the fourth and fifth embodiments. Hereinafter, the difference will be specifically described.
  • the knock light device 43 includes the imaging unit 34 as in the fourth and fifth embodiments.
  • the imaging unit 34 is disposed between the adjacent fluorescent lamps 6.
  • an opening 41 is formed in the optical layer 13 of the knocklight device 43 in a region overlapping with the optical path until the detection light enters the lens element 35 (see FIG. 11). As in the fourth embodiment, the opening 41 may not be provided.
  • the detection light source 7 (see FIGS. 4 and 5) is arranged in an area where the fluorescent lamp 6 and the imaging unit 34 are not arranged.
  • the detection light source 7 is provided in the same manner as in the third embodiment shown in FIGS. Is arranged.
  • a detection light source 7 having a short overall length is arranged so that the imaging unit 34 is sandwiched between the fluorescent lamps 6 adjacent to each other where the imaging unit 34 is arranged. Yes.
  • both the detection light source 7 and the imaging unit 34 can be accommodated in the backlight device 43, and therefore, compared to the first to fifth embodiments, The compactness of the display device can be promoted. Further, if the conventional backlight of the transmissive liquid crystal display device is replaced with the backlight device in the sixth embodiment, the display device in the sixth embodiment can be easily obtained.
  • the light amount distribution of the detection light on the display region 3 can be made uniform, and imaging that is not affected by the position of the subject 1 can be performed. it can.
  • the captured image is prevented from being distorted in a trapezoidal shape, it is necessary to correct the captured image and a shift optical system is adopted. There is no need to arrange an imaging unit.
  • a clearer optical image can be obtained as compared with the conventional case, and the image can be captured at a high resolution. For example, complicated figures such as QR codes and characters can be captured clearly.
  • heat generation can be suppressed, and noise reduction and miniaturization can be achieved.
  • FIG. 22 is a cross-sectional view showing a schematic configuration of the display device in the seventh embodiment of the present invention.
  • FIG. 23 is an exploded perspective view showing a schematic configuration of the display device shown in FIG.
  • the same reference numerals as those shown in FIGS. 1 and 2 indicate the same members as those indicated by the reference numerals in FIGS. Show.
  • the knock light device 44 is replaced with the fluorescent lamp 6 and the detection light source 7 shown in FIGS. 20 and 21 in the sixth embodiment.
  • a light emitter 45 is provided.
  • the display device according to the seventh embodiment is configured in the same manner as the display device according to the sixth embodiment. The differences will be explained in detail below.
  • the light emitter 45 is disposed inside the housing 8 of the backlight device 44.
  • the light emitter 45 includes four types of light emitting diodes 46 to 49.
  • Light emission The diodes 46 to 49 are integrated by a resin mold.
  • the light emitting diode 46 is a green diode that emits green light
  • the light emitting diode 47 is a red light emitting diode that emits red light
  • the light emitting diode 48 is a blue light emitting diode that emits blue light.
  • the light-emitting diode 49 is a light-emitting diode that emits light in the infrared region in the same manner as the light-emitting diode 21 shown in FIGS.
  • two light emitting diodes 47 and 48 and four light emitting diodes 46 are arranged around one light emitting diode 49.
  • the light emitting diodes 46 to 49 are installed over the entire region immediately below the display region 3 in which 45 light emitters can be stored.
  • the liquid crystal display panel 2 can be illuminated by turning on the light emitting diodes 46 to 48. If the light emitting diode 49 is turned on, the detection light is emitted toward the display area 3 as in the sixth embodiment.
  • a light emitting diode capable of emitting white light can be used instead of the light emitting diodes 46 to 48.
  • the light emitter 45 is provided with a plurality of openings 45a, and each of the plurality of imaging units 34 is disposed in each opening 45a.
  • the optical layer 13 is provided with an opening 41 as in the fourth to sixth embodiments. Therefore, the imaging unit 34 can receive the detection light emitted from the light emitting diode 49 and reflected by the subject 1 to perform imaging. As in the fourth embodiment, the opening 41 may not be provided.
  • the detection light source and the light source of the backlight device 44 can be driven by a common circuit. For this reason, the knocklight device can be made compact, and the entire display device can be made compact.
  • the backlight device 44 includes a detection light source (light emitting diode 49) and an imaging unit 34. Therefore, according to the seventh embodiment, all the effects described in the sixth embodiment can be obtained.
  • FIG. 24 is a cross-sectional view showing a schematic configuration of the display device according to Embodiment 8 of the present invention.
  • the symbols shown in FIG. 24 the symbols shown in FIG. 24 denote the same members as those assigned with the reference numerals in FIG.
  • the display device according to the eighth embodiment is different from the display device according to the first embodiment in that it includes a transparent plate 14 and in the direction of the optical axis of the detection light source 7. It is different. In other respects, the display device in the eighth embodiment is configured in the same manner as the display device in the first embodiment. Below, the differences are explained in detail.
  • a transparent plate 14 is arranged on the viewer side of the liquid crystal display panel 2. Further, the display area 3 of the liquid crystal display panel is covered with a transparent plate 14. The transparent plate 14 is arranged so that a space 15 is formed between the transparent plate 14 and the display area 3.
  • the transparent plate 14 may be a plate material made of a transparent material such as an acrylic plate or a glass plate. Note that the transmittance of the transparent plate 14 need not be 100%, but need not be less than 100%. Further, since it is necessary to attach the transparent plate 14, the frame 38 is used in the eighth embodiment.
  • the detection light source 7 is arranged in a region around the display region 3 of the liquid crystal display panel 2 as in the first embodiment. Specifically, four detection light sources 7 are arranged along the four sides of the display area 3. However, in the eighth embodiment, unlike the first embodiment, the detection light source 7 is arranged so that the detection light enters the transparent plate 14 from the space 15. In other words, the detection light source 7 is disposed at a position surrounding the space 15 so that the optical axis of the light emitting diode 21 is inclined in a direction away from the main surface force of the liquid crystal display panel 2. This is because in Embodiment 8, the subject 1 is located on the outer surface of the transparent plate 14. In the eighth embodiment, the role of the detection light source 7 is the same as the role of the detection light source 7 described in the first embodiment, and the description thereof is omitted. In FIG. 24, the detection light source 7 not shown in the cross section is omitted.
  • detection light is emitted from substantially the side of the subject 1.
  • the contact surface between the subject 1 and the display device is approximately the same as the installation position of the detection light source 7 when the observer side of the liquid crystal display panel 2 is up. It is located below. Therefore, light utilization efficiency From this point, the detection light emitted from the detection light source 7 is required to be parallel light substantially parallel to the main surface of the liquid crystal display panel 2.
  • the light emitted from the light-emitting diodes 21 constituting the detection light source 7 is a diffused light having a certain spread. For this reason, of the light emitted from the light emitting diode 21, the light diffusing toward the liquid crystal display panel 2 side enters the liquid crystal display panel 2 without reaching the subject 1.
  • the subject 1 comes into contact with the transparent plate 14 disposed above the liquid crystal display panel 2. That is, when the display device is viewed from the side, the contact surface between the subject 1 and the display device is located above the installation position of the detection light source 7 when the observer side of the liquid crystal display panel 2 is upward. It will be. Further, the detection light is emitted from the space 15 toward the main surface of the transparent plate 14 on the liquid crystal display panel 2 side, that is, obliquely below the subject 1. For this reason, according to the eighth embodiment, light that has not reached the subject 1 in the first embodiment can also reach the subject 1. Therefore, according to the eighth embodiment, the use efficiency of the detection light emitted from the light emitting diode 21 can be improved as compared with the first embodiment. As a result, according to the eighth embodiment, the imaging unit 4 can further improve the sensitivity.
  • the detection light is emitted toward the contact surface between the subject 1 and the transparent plate 14, so that information on the contact surface can be obtained as compared with the first embodiment. It becomes easy. Further, in the eighth embodiment, the liquid crystal display panel 2 can be protected by the transparent plate 14.
  • the detection light source 7 is arranged on the viewer side of the liquid crystal display panel. Therefore, the detection light can reach subject 1 without going through the liquid crystal display panel. Therefore, according to the eighth embodiment, the first embodiment, and the fourth embodiment, the following effects can be obtained.
  • the active matrix substrate 2c used in the first to eighth embodiments includes a plurality of active elements (TFTs) arranged in a matrix on a glass substrate. It is configured. Various metal wirings are also formed on the glass substrate.
  • TFTs active elements
  • Various metal wirings are also formed on the glass substrate.
  • the detection light is emitted from the back side of the liquid crystal display panel 2 as in Embodiments 2, 3, and 5-7, a part of the detection light is reflected by the electrodes and wirings of the active matrix substrate 2c. May be incident on the imaging unit 4. In this case, the SZN of the imaging unit 4 may decrease.
  • the detection light source 7 is arranged on the viewer side of the liquid crystal display panel, and the viewer 1 moves to the subject 1.
  • the detection light is irradiated. Therefore, since the detection light is not reflected on the back side of the liquid crystal display panel 2 as in the second, third, and fifth to seventh embodiments, the decrease in SZN of the imaging unit 4 due to this reflection is suppressed.
  • the detection light does not pass through the force liquid crystal display panel 2 until it is emitted and incident on the force imaging unit 4, and the liquid crystal
  • the loss power of light due to the passage of the display panel 2 is suppressed as compared with the second, third, and fifth to seventh embodiments. Therefore, according to the eighth embodiment and the first and fourth embodiments, the utilization rate of the detection light can be increased as compared with the second, third, and fifth to seventh embodiments. The amount of received light can be increased.
  • the transparent plate 14 is attached to the display device shown in Figs. 1 and 2 in the first embodiment, and the emission direction of the detection light source 7 is inclined upward.
  • the power explaining the mode This Embodiment 8 is not limited to this.
  • the transparent plate 14 is attached to the display device shown in FIGS. 16 and 17 in the fourth embodiment, and the emission direction of the detection light source 7 is inclined upward. Also good.
  • FIG. 25 is a cross-sectional view showing a schematic configuration of another example of the display device according to Embodiment 8 of the present invention.
  • FIG. 26 is a diagram showing the positional relationship between the detection light source and the imaging unit when the display device shown in FIG. 25 is viewed from the observer side. In FIG. 26, only the detection light source 7, the liquid crystal display panel 2, and the imaging unit 4 are illustrated, and the other members are not illustrated.
  • the imaging unit 34 shown in FIG. 11 in the second embodiment is used.
  • the source 7 is arranged so that the imaging direction of the imaging unit 34 and the emission direction of the detection light source 7 intersect each other when viewed from the observer side (above the transparent plate 14).
  • the imaging direction of the imaging unit 34 refers to the direction of the directional force toward the center of the imaging region on the main surface of the transparent surface 14 of the imaging device 32 (see Fig. 11).
  • the imaging direction when the observer side force is also seen is the direction indicated by arrow X in FIG.
  • the emission direction of the detection light source 7 refers to the normal direction of the emission surface of the detection light source 7, that is, the normal direction of the optical sheet 24 shown in FIG.
  • the emission direction when viewed from the observer side is the direction indicated by the arrow Y in FIG.
  • the detection light source 7 is arranged along two opposing long sides of the rectangular display region 3, and the imaging unit 34 is arranged in the rectangular display region. It is arranged along two opposing two short sides.
  • the imaging direction X of the imaging unit 34 and the emission direction Y of the detection light source 7 intersect at right angles when viewed from the observer side (above the transparent plate 14).
  • FIG. 25 when the transparent plate 14 is arranged above the display area 3, a part of the detection light emitted from the detection light source 7 is reflected by the transparent plate 14 without passing through the transparent plate 14. There is.
  • reference numeral 16 denotes detection light (reflection detection light) reflected by the transparent plate 14. At this time, if the reflected detection light 16 enters the imaging unit 4, the image of the detection light source 7 is included in the captured image, and the image quality may deteriorate.
  • the imaging direction X of the imaging unit 34 and the emission direction Y of the detection light source 7 intersect when the observer side force is also seen.
  • the direction of the reflected detection light 16 when viewed from above also intersects the imaging direction X of the imaging unit 34. Therefore, according to this example, the incidence of the reflection detection light 16 on the imaging unit 4 can be suppressed, and as a result, the image quality of the captured image can be improved.
  • the imaging unit 4 (see FIG. 3) including a shift optical system can be used instead of the imaging unit 34.
  • the imaging unit 4 when the display area 3 has a rectangular shape as in this example, the imaging unit 4 only needs to be arranged along a side adjacent to the side where the detection light source 7 is arranged. Therefore, in this example, the imaging unit 34 may be arranged along the long side of the display region 3 and the detection light source 7 may be arranged along the short side.
  • the imaging unit 34 is arranged along the short side, and the detection light source 7 is arranged on the long side.
  • the installation space of the detection light source 7 can be increased, so that the amount of detection light can be easily secured.
  • the force that allows the arrangement position of the imaging unit 34 to be a plane including the display area 3 The thickness of the device can be reduced as much as possible / J.
  • the captured image has a trapezoidal shape (see FIG. 12) that is tapered along the long side direction.
  • the bottom corresponds to the short side of the display area 3 and the height corresponds to the long side of the display area 3.
  • the ratio of the height of the trapezoidal captured image to the bottom is smaller than the ratio of the long side to the short side of the display region 3. That is, the captured image is an image compressed in the long side direction.
  • the ratio of the long side to the short side (aspect ratio) of the display area 3 is 16: 9
  • the display area 3 is inclined by 65 degrees with respect to the normal of the display area 3.
  • X 16: 9 (4: 3) the ratio of the height to the bottom of the captured image is about 0.42 times the ratio of the long side to the short side of display area 3, and the captured image has a height of about three-quarters of the bottom. It becomes a shape.
  • the long side of the light receiving area is set to the short side of the display area 3 when viewed from the observer side. If the imaging unit 34 is arranged so that it is parallel and the short side of the light receiving region is parallel to the long side of the display region 3, imaging can be performed efficiently.
  • the display device and the backlight device according to the present invention are not limited to Embodiments 1 to 8 described above.
  • the display device according to the present invention may be a reflective liquid crystal display device without a knock light device! /.
  • the display device may be configured such that the detection light source emits light having a wavelength in the visible region, or may not include the detection light source.
  • the detection light source emits light having a wavelength in the visible region, or may not include the detection light source.
  • a display mode window that transmits visible light is intentionally created in the display image, and the subject is placed in this window. It should be placed.
  • the imaging unit has light of an infrared wavelength, for example, 700 nm or more, preferably 800 nm or more, particularly preferably. It is preferable to configure to receive only light with a wavelength of 850 nm or more. In this case, only light in the infrared region wavelength included in the external light is incident on the light receiving surface of the imaging unit, so that noise due to visible light is removed and high-resolution capture is possible.
  • an infrared wavelength for example, 700 nm or more, preferably 800 nm or more, particularly preferably. It is preferable to configure to receive only light with a wavelength of 850 nm or more. In this case, only light in the infrared region wavelength included in the external light is incident on the light receiving surface of the imaging unit, so that noise due to visible light is removed and high-resolution capture is possible.
  • the detection light source may be provided in an external device (see FIGS. 8 and 13).
  • the detection light source can be incorporated in the controller of the game device.
  • the detection light source can be built in an input device such as a mouse.
  • the imaging unit may take an image of the detection light itself that has entered the liquid crystal display panel, and thereby the incident position of the detection light may be detected.
  • the liquid crystal display is further processed. It is preferable that the opposite side (back side) of the display panel to the viewer side is also anti-reflective treated. In this case, the surface reflection component on the back surface of the liquid crystal display panel can be prevented from entering the imaging unit, and the contrast of the captured image can be improved.
  • FIG. 27 is a cross-sectional view showing a schematic configuration of the display apparatus according to Embodiment 9 of the present invention.
  • the same reference numerals as those shown in FIGS. 1 and 24 indicate the same members as those given the reference numerals in FIGS.
  • the display device in the ninth embodiment is the same as the display device in the eighth embodiment shown in FIG. 24, and is a transparent plate arranged on the viewer side of the display panel 50. 14 and a detection light source 7 arranged in a region around the display region 3.
  • the detection light source 7 is arranged so that the detection light is incident on the transparent plate 14 from the space 15 between the transparent plate 14 and the display region 3. Therefore, in the ninth embodiment, as in the eighth embodiment, the use efficiency of the detection light emitted from the light emitting diode 21 is improved as compared with the first embodiment. It is possible to improve the sensitivity of the imaging unit 34.
  • the display device includes the imaging unit 34 shown in FIG. 11 in the second embodiment.
  • the imaging unit 34 the optical axis 35a of the lens element 35 and the normal line 32a passing through the center of the light receiving surface of the solid-state imaging element 32 coincide with each other (see FIG. 11).
  • the imaging unit 34 is arranged in a region that overlaps the thickness direction of the display panel 50 as in the display devices in the fourth to seventh embodiments.
  • Embodiment 9 as in Embodiments 4 to 7, the object 1 is positioned in front of the imaging unit 34, and thus the captured image has a trapezoidal shape. Distortion is avoided and there is no need to correct the captured image. In addition, there is no need to provide an imaging unit that employs a shift optical system. Therefore, according to the ninth embodiment, similarly to the second embodiment, it is possible to reduce the diameter of the lens system constituting the imaging optical system, simplify the imaging optical system, and reduce the design cost. . Furthermore, the image processing of the captured image in the control device can be simplified.
  • the display panel is used to increase the optical imaging distance (focal length of the imaging optical system) of the imaging unit 34.
  • a fixed distance is placed between the image capturing unit 34 and the imaging unit 34, and a cavity exists on the back side of the display panel 50.
  • the display panel 50 is an EL (Electro Luminescence) display panel (hereinafter referred to as “EL display panel 50”), and the display device in the ninth embodiment. Is an EL display.
  • the display device according to the ninth embodiment is different from the display devices according to the first to eighth embodiments in this respect.
  • the EL display panel 50 displays an image using an electroluminescence phenomenon (EL phenomenon) generated when an electric field is applied to a substance such as a fluorescent compound.
  • the EL display panel 50 is an organic EL display panel.
  • the EL display panel 50 includes, for example, an ITO (Indium Tin Oxide) film, a hole transport layer, an electron transport layer, a back electrode (force sword), etc., which become a transparent electrode (anode) on a transparent substrate such as a glass substrate. It is constructed by stacking in order.
  • ITO Indium Tin Oxide
  • the EL display panel 50 when a voltage is applied between the ITO film and the back electrode, electrons are injected into the electron transport layer and holes are injected into the hole transport layer. And hole transport The injected electrons and holes combine at the interface between the sending layer and the electron transport layer, and the energy of the electrons is emitted in the form of light. Further, the emitted light forms an image on the display area 3.
  • the EL display panel 50 may be an inorganic EL display panel!
  • the EL display panel 50 is light transmissive as in the case of the liquid crystal display panel. Therefore, the detection light reflected by the subject 1 enters the EL display panel 50 and can further pass therethrough. For this reason, also in the ninth embodiment, the imaging unit 34 is connected from the back side of the EL display panel 50 via the EL display panel 50 to the state on the viewer side of the display area 3 (on the display area 3 and the display area 3). 3 states).
  • the EL display panel 50 is a self-luminous element that emits light. Therefore, the display device in the ninth embodiment is different from the display devices in the first to eighth embodiments in that it does not include a knocklight device. In the ninth embodiment, unlike the fourth to seventh embodiments, the imaging unit 34 is disposed on the bottom surface of the frame 51.
  • the EL display panel 50 that is a self-luminous element is used, whereby the display device does not require a knocklight device. . Therefore, according to the ninth embodiment, the following effects can be obtained.
  • the backlight device is provided on the back side of the liquid crystal display panel to illuminate the liquid crystal display panel. Is placed. For this reason, the imaging unit 4 or 34 arranged on the back side of the liquid crystal display panel is bright, and external force may be visually recognized through the liquid crystal display panel.
  • Embodiment 9 the back side of the EL display panel 50 is not bright, so that the imaging unit 34 is not visually recognized by an external force. Therefore, according to the ninth embodiment, the quality of the display image can be improved. Further, according to the ninth embodiment, since a knocklight device is not necessary, the display device can be thinned and the configuration can be simplified.
  • the EL display panel 50 light having a wavelength in the infrared region is also emitted from the display region 3 due to its structure. Therefore, in the ninth embodiment, light having a wavelength in the infrared region emitted from the display region 3 can be used as detection light. According to the ninth embodiment Then, imaging can be performed using light having a wavelength in the infrared region without using the detection light source 7.
  • the ninth embodiment similarly to the first to eighth embodiments, light having a wavelength in the visible region can be used as detection light. However, in the ninth embodiment, light having a wavelength in the visible region emitted from the display region 3 can be used as detection light. Furthermore, as described above, in the ninth embodiment, the back side of the EL display panel 50 is not bright as compared with the first to eighth embodiments, and thus imaging is performed using light with a wavelength in the visible region. Even in this case, it is possible to capture at high resolution.
  • the display device shown in FIG. 27 is merely an example.
  • the EL display panel 50 is attached instead of the liquid crystal display panel 2 in the display device described in Embodiments 1 to 8, and the backlight device is removed. It may be what was done.
  • the display device of the present invention has an input function, is useful as a display device for personal computers, televisions, game machines, etc., and has industrial applicability. Yes.
  • the backlight device of the present invention is useful as an illumination light source for a liquid crystal display device, and has industrial applicability.

Landscapes

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

Abstract

La présente invention concerne un dispositif d'affichage qui inclut un panneau d'affichage à cristaux liquides (2) et une unité de traitement d'image (4) ayant un système optique de formation d'image. L'unité de traitement d'image (4) est disposée de telle manière qu'une lumière réfléchie à partir d'un objet (1) sur une région d'affichage (3) du panneau d'affichage à cristaux liquides (2) entre dans le système optique de formation d'image par l'intermédiaire du panneau d'affichage à cristaux liquides (2). L'unité de traitement d'image (4) reçoit la lumière incidente réfléchie et traite l'objet (1) en tant qu'image. Il est préférable que le dispositif d'affichage inclue en outre une source de lumière de détection (7) afin d'appliquer une lumière de détection à l'objet (1). Dans ce dispositif d'affichage, une image peut être affichée en utilisant le panneau d'affichage. Par conséquent, il est possible de réduire la génération de chaleur, le bruit et la taille. En outre, selon le dispositif d'affichage dans lequel l'unité de traitement d'image inclut le système optique de formation d'image, il est possible d'acquérir une image avec une résolution élevée par rapport à un dispositif d'affichage ayant la fonction d'entrée classique. Le dispositif d'affichage inclut une fonction d'entrée et peut être utilisé en tant que dispositif d'affichage d'un ordinateur personnel, d'un téléviseur et d'un dispositif de jeux.
PCT/JP2006/313422 2005-07-28 2006-07-05 Dispositif d'affichage et dispositif de rétroéclairage WO2007013272A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2005219321 2005-07-28
JP2005-219321 2005-07-28
JP2005278583 2005-09-26
JP2005-278583 2005-09-26
JP2005355314 2005-12-08
JP2005-355314 2005-12-08
JP2006-048803 2006-02-24
JP2006048803 2006-02-24

Publications (1)

Publication Number Publication Date
WO2007013272A1 true WO2007013272A1 (fr) 2007-02-01

Family

ID=37683174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/313422 WO2007013272A1 (fr) 2005-07-28 2006-07-05 Dispositif d'affichage et dispositif de rétroéclairage

Country Status (1)

Country Link
WO (1) WO2007013272A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011108236A (ja) * 2009-11-13 2011-06-02 Samsung Electronics Co Ltd センシングアレイを用いたマルチタッチおよび近接するオブジェクトセンシング装置
JP2011198340A (ja) * 2010-03-17 2011-10-06 Samsung Mobile Display Co Ltd タッチ表示装置
JP2012022673A (ja) * 2010-06-16 2012-02-02 Semiconductor Energy Lab Co Ltd 入出力装置及び入出力装置の駆動方法
JP2012022674A (ja) * 2010-06-16 2012-02-02 Semiconductor Energy Lab Co Ltd 入出力装置及び入出力装置の駆動方法
EP2037352A3 (fr) * 2007-09-12 2012-04-25 Multitouch OY Affichage interactif
US8319749B2 (en) 2007-02-23 2012-11-27 Sony Corporation Image pickup apparatus, display-and-image-pickup apparatus and image pickup processing apparatus
JP2015536501A (ja) * 2012-10-26 2015-12-21 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ ディスプレイ上の赤外線ジェスチャ命令を提供することに関するシステム及び方法
WO2021095581A1 (fr) * 2019-11-12 2021-05-20 ソニーセミコンダクタソリューションズ株式会社 Dispositif électronique
JP2021117379A (ja) * 2020-01-27 2021-08-10 株式会社ジャパンディスプレイ 電子機器

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0411484A (ja) * 1990-04-27 1992-01-16 Nippon Philips Kk 画像表示／撮像装置
JPH04145788A (ja) * 1990-10-08 1992-05-19 Nippon Telegr & Teleph Corp <Ntt> 視線一致撮像表示装置
JPH0678301A (ja) * 1992-08-27 1994-03-18 Toshiba Corp 双方向性パネルディスプレイ装置
JPH06153190A (ja) * 1992-11-04 1994-05-31 Nippon Philips Kk 画像表示／撮像装置
JPH06291937A (ja) * 1993-04-01 1994-10-18 Mitsubishi Electric Corp カラー画像入力装置
JPH07311377A (ja) * 1994-05-16 1995-11-28 Sharp Corp 表示一体型の液晶画像読取装置
JP2000298253A (ja) * 1999-04-14 2000-10-24 Seiko Epson Corp 撮像機能付き液晶表示装置、コンピュータ、テレビジョン電話およびディジタルカメラ
JP2001350198A (ja) * 2000-06-07 2001-12-21 Canon Inc スキャナ機能付きプロジェクション装置
JP2002094955A (ja) * 2000-02-22 2002-03-29 Philips Japan Ltd 画像表示撮像装置
JP2002311435A (ja) * 2001-04-18 2002-10-23 Matsushita Electric Ind Co Ltd 液晶表示装置および撮像装置
JP2004303172A (ja) * 2003-04-01 2004-10-28 Seiko Epson Corp 光学式タッチパネル及び電子機器
JP2005033784A (ja) * 2003-06-17 2005-02-03 Semiconductor Energy Lab Co Ltd 撮像機能付き表示装置及び双方向コミュニケーションシステム
JP2005039578A (ja) * 2003-07-16 2005-02-10 Semiconductor Energy Lab Co Ltd 撮像機能付き表示装置、及び双方向コミュニケーションシステム

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0411484A (ja) * 1990-04-27 1992-01-16 Nippon Philips Kk 画像表示／撮像装置
JPH04145788A (ja) * 1990-10-08 1992-05-19 Nippon Telegr & Teleph Corp <Ntt> 視線一致撮像表示装置
JPH0678301A (ja) * 1992-08-27 1994-03-18 Toshiba Corp 双方向性パネルディスプレイ装置
JPH06153190A (ja) * 1992-11-04 1994-05-31 Nippon Philips Kk 画像表示／撮像装置
JPH06291937A (ja) * 1993-04-01 1994-10-18 Mitsubishi Electric Corp カラー画像入力装置
JPH07311377A (ja) * 1994-05-16 1995-11-28 Sharp Corp 表示一体型の液晶画像読取装置
JP2000298253A (ja) * 1999-04-14 2000-10-24 Seiko Epson Corp 撮像機能付き液晶表示装置、コンピュータ、テレビジョン電話およびディジタルカメラ
JP2002094955A (ja) * 2000-02-22 2002-03-29 Philips Japan Ltd 画像表示撮像装置
JP2001350198A (ja) * 2000-06-07 2001-12-21 Canon Inc スキャナ機能付きプロジェクション装置
JP2002311435A (ja) * 2001-04-18 2002-10-23 Matsushita Electric Ind Co Ltd 液晶表示装置および撮像装置
JP2004303172A (ja) * 2003-04-01 2004-10-28 Seiko Epson Corp 光学式タッチパネル及び電子機器
JP2005033784A (ja) * 2003-06-17 2005-02-03 Semiconductor Energy Lab Co Ltd 撮像機能付き表示装置及び双方向コミュニケーションシステム
JP2005039578A (ja) * 2003-07-16 2005-02-10 Semiconductor Energy Lab Co Ltd 撮像機能付き表示装置、及び双方向コミュニケーションシステム

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8319749B2 (en) 2007-02-23 2012-11-27 Sony Corporation Image pickup apparatus, display-and-image-pickup apparatus and image pickup processing apparatus
JP5093523B2 (ja) * 2007-02-23 2012-12-12 ソニー株式会社 撮像装置、表示撮像装置および撮像処理装置
EP2037352A3 (fr) * 2007-09-12 2012-04-25 Multitouch OY Affichage interactif
JP2011108236A (ja) * 2009-11-13 2011-06-02 Samsung Electronics Co Ltd センシングアレイを用いたマルチタッチおよび近接するオブジェクトセンシング装置
US9141233B2 (en) 2010-03-17 2015-09-22 Samsung Display Co., Ltd. Touch controlled display device
JP2011198340A (ja) * 2010-03-17 2011-10-06 Samsung Mobile Display Co Ltd タッチ表示装置
TWI503720B (zh) * 2010-03-17 2015-10-11 Samsung Display Co Ltd 觸控顯示裝置
JP2012022674A (ja) * 2010-06-16 2012-02-02 Semiconductor Energy Lab Co Ltd 入出力装置及び入出力装置の駆動方法
JP2012022673A (ja) * 2010-06-16 2012-02-02 Semiconductor Energy Lab Co Ltd 入出力装置及び入出力装置の駆動方法
US9459719B2 (en) 2010-06-16 2016-10-04 Semiconductor Energy Laboratory Co., Ltd. Input-output device and method for driving the same
US9489088B2 (en) 2010-06-16 2016-11-08 Semiconductor Energy Laboratory Co., Ltd. Input-output device and method for driving input-output device
JP2015536501A (ja) * 2012-10-26 2015-12-21 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ ディスプレイ上の赤外線ジェスチャ命令を提供することに関するシステム及び方法
WO2021095581A1 (fr) * 2019-11-12 2021-05-20 ソニーセミコンダクタソリューションズ株式会社 Dispositif électronique
JP2021117379A (ja) * 2020-01-27 2021-08-10 株式会社ジャパンディスプレイ 電子機器

Similar Documents

Publication Publication Date Title
WO2007013272A1 (fr) Dispositif d&#39;affichage et dispositif de rétroéclairage
US11515377B2 (en) Display panel with a light-blocking layer
WO2020045262A1 (fr) Module de capteur d&#39;authentification d&#39;empreinte digitale de type sous affichage et dispositif d&#39;authentification d&#39;empreinte digitale de type sous affichage
KR101174015B1 (ko) 평판 표시장치 및 그 제조 방법
JP4404927B2 (ja) 表示システムおよび指示位置の検出方法
JP2007156648A (ja) 表示装置
EP2330819A2 (fr) Dispositif d&#39;affichage d&#39;images avec unité d&#39;imagerie
US9870100B2 (en) Multi-touch sensing apparatus using rear view camera of array type
CN112313567B (zh) 显示装置、嵌入有显示装置的电子设备以及存储介质
WO2021013253A1 (fr) Dispositif électronique et son procédé d&#39;image
JP2010020237A (ja) 画像検出表示装置および電子機器
JP2009116701A (ja) 表示システムおよび指示位置の検出方法
JP2009116700A (ja) 表示システムおよび指示位置の検出方法
JP2007226439A (ja) 表示装置及び電子機器
JP2008191261A (ja) 液晶表示装置
JP2007156757A (ja) 表示装置
CN111526226B (zh) 电子设备及显示装置
JP2007074666A (ja) 表示撮像装置
JP2007187753A (ja) 液晶表示装置
KR20230061348A (ko) 화상 표시 장치 및 전자 기기
JP2010152573A (ja) 表示装置、および表示方法
WO2007026463A1 (fr) Dispositif d&#39;affichage à cristaux liquides
WO2007026462A1 (fr) Dispositif d’affichage à cristaux liquides
JP2007156647A (ja) 表示装置
JP2008191262A (ja) 液晶表示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06780798

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP