Abstract: A light guide plate receives light, which is emitted from a light source, and emits the light from a light emitting surface. A prism sheet reflects light at a predetermined angle among the light emitted from the light emitting surface, allows the reflected light to enter the light guide plate, and transmits light at another angle thereamong. Between a 1/4 wavelength plate and a reflection-type liquid crystal display element, a polarization control element is provided in parallel to the light emitting surface. The polarization control element splits the light, which is emitted from the 1/4 wavelength plate, into first polarized light allowed to transmit as illumination light that enters the reflection-type liquid crystal display element and second polarized light reflected so as to enter the light guide plate 3, and reflects the light modulated and emitted by the reflection-type liquid crystal display element.

Abstract: A liquid crystal display includes: a liquid crystal panel containing an effective pixel region that is configured to emit light corresponding to an image; and a frame member provided on a light emission side of the liquid crystal panel, and having an opening opposed to the effective pixel region of the liquid crystal panel. An edge portion of the opening of the frame member is formed of a low-reflection material having a reflectance of less than about 1.5% to green light.

Abstract: The present invention is directed to display technologies. More specifically, various embodiments of the present invention provide projection display systems where one or more laser diodes are used as light source for illustrating images. In one set of embodiments, the present invention provides projector systems that utilize blue and/or green laser fabricated using gallium nitride containing material. In another set of embodiments, the present invention provides projection systems having digital lighting processing engines illuminated by blue and/or green laser devices. In one embodiment, the present invention provides a 3D display system. There are other embodiments as well.

Abstract: Provided is a projection image display apparatus that can restrict crosstalk between a left eye image and a right eye image. The projection image display apparatus includes a liquid crystal element that switches polarization of the light emitted from the optical modulation element between a first polarization and a second polarization, and a waveplate that is provided between the liquid crystal element and the projection surface. The waveplate includes a plurality of areas having different slow axes or fast axes from each other.

Abstract: The present disclosure describes an interactive display system, method and computer readable medium. In one embodiment, an interactive display surface having one or more computer generated patterns printed thereon may be utilized in conjunction with an electronic pen in order to identify the absolute position of the pen relative to the interactive display surface. In one embodiment, the absolute position of the electronic pen may be transmitted to a computer system and utilized to control one or more programs running on the computer system. In one embodiment, the visual output of the computer system may be superimposed upon the interactive display surface using one or more projectors. The computer generated patterns may have a predefined association with a control operation of the computer system such that placing the electronic pen in proximity to the associated generated pattern causes the computer system to automatically execute the associated control operation.

Abstract: A display device for a user to observe a stereo image through a pair of polarization glasses includes a projector, a switchable polarizer, and a sensor. The projector sequentially displays a first image, a first middle image, a second image, and a second middle image on a projection screen. The switchable polarizer is located between the projector and the projection screen and is switchable between a first mode and a second mode, so that each of the first and second images has a first or second polarization after passing through the switchable polarizer in the first or second mode and is then projected onto the projection screen. The sensor is coupled to the switchable polarizer and senses the images on the projection screen. When the sensor senses the first middle image or the second middle image, the switchable polarizer switches between the first mode and the second mode.

Abstract: The present invention is directed to display technologies. More specifically, various embodiments of the present invention provide projection display systems where one or more laser diodes are used as a light source for illustrating images. In one set of embodiments, the present invention provides projector systems that utilize blue and/or green laser fabricated using gallium nitride containing material. In another set of embodiments, the present invention provides projection systems having digital lighting processing engines illuminated by blue and/or green laser devices. In one embodiment, the present invention provides a 3D display system. There are other embodiments as well.

Abstract: A projection display device has an illumination optical system that includes a light-intensity equalization element, a first optical system, and an aperture regulation member. The aperture regulation member is disposed at a position that is not optically conjugate with the screen, and the aperture regulation member has at least one of the following, using measured or calculated relative illuminances at each of multiple segments of the image formation region or screen: an aperture expansion part provided at a position corresponding to a segment with a low relative illuminance, the aperture expansion part being a cutout that narrows the light-blocking section and widens the aperture section; an aperture contraction part provided at a position corresponding to a segment with a high relative illuminance, the aperture contraction part being a protrusion that widens the light-blocking section and narrows the aperture section.

Abstract: A highly moisture-resistant liquid crystal display apparatus and a manufacturing method thereof suppresses display deterioration due to the occurrence of image retention without gap controllability and alignment-stability maintenance. The liquid crystal display apparatus includes: a first sealing member arranged at an outer periphery of a liquid crystal layer sandwiched between a pair of substrates; and a second sealing member arranged at an outer periphery of the first sealing member in contact with the pair of substrates. The second sealing member 16 is formed from an alkylsiloxane compound as a main ingredient which is formed into an inorganic film by irradiation with an ultraviolet radiation. The alkylsiloxane compound is a di-alkylsiloxane compound or di-methyl-siloxane compound.

Abstract: A multimedia player for providing clear projection image includes; a projection unit displaying a projection image; a screen sensing unit sensing a color of a display plane on which the projection image will be displayed; and a virtual input unit for detecting and providing coordinates of a position being touched on the projection image, wherein a driving unit of the projection unit controls a focal length of a projection lens unit based on a projection image being captured by the screen sensing unit.

Abstract: A projection optical system (6) comprises a relay optical system (61), a PBS prism (71), and two projection lenses (81). The image light beam from a DMD (5) enters the PBS prism (71) via the relay optical system (61), is polarization-split there, and is directed to a screen by means of the two projection lenses (81). Displaying an image by means of the DMD (5) is controlled while the polarized states of the light beams produced by the polarization split by means of the PBS prism (71) are controlled. Thereby, a three-dimensionally viewable image and a high-resolution image created by pixel-offset can be projected. Since the relay optical system (61) is provided, the lens backs of the projection lenses (81) can be shortened, and the projection lenses (81) and further the projection optical system (6) can be made compact.

Abstract: An illumination apparatus having an illumination function and an image projection function includes a light source for illumination, an image projection section including a light source portion having a light source for image projection different from the light source for illumination, an image formation portion that modulates light from the light source portion based on image information to be projected to form an image, and a projection lens that enlarges and projects the image, a connection section electrically connectable to an illumination apparatus fixture, a lamp cover attached to the connection section, accommodating the light source for illumination and the image projection section, and having a light transmissive portion that transmits illumination light from the light source for illumination and the image projected from the image projection section, and a control section having a function of controlling the light source for illumination and the image projection section.

Abstract: A transmitter that outputs an image signal for displaying a first image and outputs an image signal of a synthesized image made of the reversal image of the first image and a second image. A display apparatus, based on the image signals output from the transmitter, displays the first image and the synthesized image with circular polarizations having different senses of rotation from each other. A receiver includes a circular polarization selecting and transmitting means that separates the first image and the synthesized image displayed on the display apparatus, based on the sense of rotation of the circular polarization, and selectively allows the images to pass therethrough, so as to be able to photograph the first image displayed on the display apparatus.

Abstract: A cooling device and a projection device comprising the same are provided. The projection device comprises a lamp and a cooling device. The lamp has a first side and a second side opposite the first side, and one of the two sides is the upper side of the lamp. The cooling device comprises a first blower and a second blower. The first blower is adapted to generate a first airflow towards the first side, while the second blower is adapted to generate a second airflow towards the second side.

Abstract: A reflective liquid crystal projector according to the aspect of the invention includes a light source, a reflective liquid crystal panel, and a wire grid polarization beam splitter element. The wire grid polarization beam splitter element is provided with a polarization beam split surface that reflects a first polarized light component and transmits a second polarized light component. The reflective liquid crystal projector also includes a projection optical system that projects the first polarized light component, and an aperture stop that is disposed on an optical path of the light beam emitted from the light source. The aperture stop limits the amount of first light more than that of second light. The first light is divergent from the reflective liquid crystal panel to the polarization beam split surface. The second light is divergent from the reflective liquid crystal panel to the polarization beam split surface.

Abstract: A projector includes an image projection unit that projects an image for left eye and an image for right eye, and a transmitting unit that transmits a synchronizing signal for synchronization with switching between the image for left eye and the image for right eye. The transmitting unit is arranged to adjust a transmission direction of the synchronizing signal.

Abstract: A projection display apparatus includes a polarization beam splitter, a first phase compensation plate including two layers, and a light modulator. Each layer has a constant axial angle, and an optical axis of each layer inclines with respect to the x axis in an xz plane. The axial angle of the layer closer to the polarization beam splitter among the two layers is larger than the axial angle of the layer farther from the polarization beam splitter. 20°??max??min?80° is satisfied where ?max is a maximum value of the axial angle and ?min is a minimum value of the axial angle. 40°??ave?70° is satisfied where ?ave is an average value of axial angles of the two layers.

Abstract: A locally dimmed display has a spatial light modulator illuminated by a light source. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.

Abstract: A liquid crystal device includes a substrate, a base body that is disposed opposing the substrate, a liquid crystal layer that is held between the substrate and the base body, an inorganic alignment film that is provided between the liquid crystal layer and the substrate or the base body, and a protection film that is provided between the inorganic alignment film and the liquid crystal layer, the inorganic alignment film has a plurality of grooves that are hollowed toward the surface on the opposite side of the liquid crystal layer from the surface on the liquid crystal layer side, and the protection film has a cave-in shape toward the opposite side to the liquid crystal layer from the liquid crystal layer side in at least one portion of portions corresponding to the plurality of grooves.

Abstract: A window apparatus comprises a first layer including a liquid crystal microdroplet (LCMD) display switchable between transparent and opaque states in response to a change in an applied electrical voltage and a second layer coupled to the first layer. The second layer is changeable between a light transmitting configuration and a light blocking configuration.

Abstract: A projection apparatus for projection in a liquid environment comprises a projection surface adapted to be positioned in the liquid environment and a projector adapted to be positioned in the liquid environment. The projector is adapted to project an image on the projection surface.

Abstract: A projector includes: a reflection-type polarizing plate which separates entering luminous flux by polarization into first linearly polarized light and second linearly polarized light whose polarization directions cross each other at right angles; a reflection-type light modulation device disposed inclined to the reflection-type polarizing plate to modulate the first linearly polarized light separated by polarization by the reflection-type polarizing plate according to image information and emit the modulated first linearly polarized light toward the reflection-type polarizing plate; a supporting body which supports the reflection-type polarizing plate and the reflection-type light modulation device; and a light shielding member disposed in an area to emit side of the second linearly polarized light which entering the reflection-type polarizing plate before modulation by the reflection-type light modulation device and separated by polarization, and connected with the supporting body.

Abstract: An object is to implement a narrowed picture-frame while suppressing the occurrence of light leakage and a reduction in luminance in an edge-light type backlight device. A backlight device is composed of LEDs (40); a side chassis (51) supporting a board having the LEDs (40) mounted thereon; a light guide plate (20) for allowing light emitted from the LEDs (40) to exit toward a liquid crystal panel in a planar manner; a reflection sheet (30) for allowing light traveling toward a back surface side within the light guide plate (20) to be reflected thereby; optical sheets (10) including a reflection type polarizer (11), a prism sheet (12), and a diffuser (13); and a top chassis (52) disposed on top of the optical sheets (10). Black printing (60) is provided in a part of the region of the diffuser (13).

Abstract: A display structure includes a liquid crystal module, and a light guide layer arranged on a surface of the liquid crystal module, first light-emitting devices arranged at an edge of one end portion of the light guide layer, and a transmittance-controllable layer arranged on a surface of the light guide layer opposing the liquid crystal module. The light-emitting devices are configured to emit light into the light guide layer, and thus the light emitted by the light-emitting devices is transmitted within the light guide layer. The transmittance-controllable layer may have light transmittance characteristics which change depending on an external stimulus applied thereto.

Abstract: A system and a method for time-multiplexed autostereoscopic display are disclosed, wherein the system includes a projector, an optical relaying device and a slit array. The projector can project a plurality of rays of different directions in different time sequences respectively. The optical relaying device is optically coupled with the projector for relaying the rays. The slit array is optically coupled with the optical relaying device for being illuminated by the rays. The slit array further has a plurality of regions which are illuminated by the rays respectively; and each of the regions has a plurality of slits which are turned on sequentially for a part of the rays to pass therethrough. Therefore, the display system can reduce the light loss of the rays each time when a 3D virtual image is formed.

Abstract: A liquid crystal display 50 includes: a light source 10; a liquid crystal display panel 213; a wire-grid polarization plate 211, 214 located on at least one of a light-incident side and a light-emission side of the liquid crystal display panel 213, and including a base plate 101 and a plurality of wires 100 arranged in stripes on the base plate 1; a projection lens 23; a cooling part 25 which supplies wind to the liquid crystal display panel 213 and the polarization plate 211, 214 to cool them; and a covering wall 102 which covers end faces of the plurality of wires 100 and ends of a plurality of grooves 108 formed between the plurality of wires 100, at a windward side of the polarization plate 211, 214 in a flow direction of the wind supplied from the cooling part 25.

Abstract: A projection lens for projecting images with high degrees of image offset while limiting the physical offset of the projection lens elements. The projection lens arrangement limits the displacement of the optical elements relative to the optical axis of the display panel and enables a very thin, efficient projector.

Abstract: Provided is a liquid crystal display apparatus including first and second substrates configured to be arranged so as to face each other, a vertical-orientation-type liquid crystal layer configured to be enclosed between the first and second substrates, pixel electrodes configured to be installed on a side of the liquid crystal layer on the first substrate, an orientation film configured to be installed so as to cover the side of the liquid crystal layer of the pixel electrodes and to have a predetermined orientation restriction direction, and a surface light-blocking layer configured to be installed on a lower layer of an area between the pixel electrodes, to be installed along a side in which a normal line direction and the orientation restriction direction of the orientation film are different by 90 degrees or more, and to be set to a same potential as the pixel electrode.

Abstract: A projector apparatus includes: a projection unit that projects an image onto a projection surface; a reflectance distribution detection unit that detects a reflectance distribution at the projection surface; a density distribution detection unit that detects a density distribution of a base pattern at the projection surface; a smoothing unit that smooths the reflectance distribution and the density distribution; an input unit that inputs image data; a correction unit that corrects the input image data based upon the smoothed reflectance distribution, the smoothed density distribution and input/output characteristics of the projection unit; and a control unit that controls the projection unit so as to project the image based upon the image data having been corrected.

Abstract: Two light modulators, a first light modulator and a second light modulator, suffice for four light sources, a first light source, a second light source, a third light source, and a fourth light source, whereby the cost can be lowered as compared with a configuration in which three light modulators are required. As a result, cost reduction is achieved. Further, since two light modulators suffice, the size of the projector can be reduced as compared with the configuration in which three light modulators are required.

Abstract: A projector includes: an illumination optical system which emits first light (green light); a reflection type first liquid crystal panel which modulates the first light emitted from the illumination optical system; a first wire grid element which is disposed at a position at which the first light modulated and reflected by the first liquid crystal panel is incident, which includes a plurality of metal wires extending so as to be almost parallel to a light-exit surface of the first liquid crystal panel, and in which the surface on which the first light is incident is inclined by an angle equal to or greater than 37° and less than 45° with respect to a normal direction of the light-exit surface of the first liquid crystal panel; a projection optical system which projects the first light modulated by the first liquid crystal panel and reflected from the first wire grid element.

Abstract: Generally, this disclosure concerns the angle sensitivity of polarization switch elements and the resulting impact of the ray direction on performance. More specifically, apparatus and techniques for compensating the angular sensitivity of liquid crystal (LC) polarization switches are described that enhance the performance of polarization switches. For example, a polarization switch is disclosed that transforms linearly polarized light of an initial polarization orientation that includes a first and second liquid crystal cell with a compensator located between the LC cells. The compensator layer is operable to enhance the field of view through the polarization switch. Such compensation techniques are particularly useful for short-throw projection environments.

Abstract: A projector includes a light source; a spatial light modulation device which modulates light from the light source according to an image that is written; a light diffusion device which adjusts a degree of diffusion of the light incident on the spatial light modulation device or the light emitted from the spatial light modulation device; and a light diffusion controller which controls the light diffusion device so that the light diffusion device diffuses the light when the light source starts to light up.

Abstract: A screen including a polymer dispersed liquid crystal layer including liquid crystal molecules and polymers different from the liquid crystal molecules, wherein a twist angle of the polymers is equal to or larger than 0° and smaller than 180°, and, when an electric field does not act on the polymer dispersed liquid crystal layer, the polymer dispersed liquid crystal layer changes to a first state in which the polymer dispersed liquid crystal layer transmits light made incident on the polymer dispersed liquid crystal layer and, when an electric filed acts on the polymer dispersed liquid crystal layer, the polymer dispersed liquid crystal layer changes to a second state in which the polymer dispersed liquid crystal layer scatters light made incident on the polymer dispersed liquid crystal layer.

Abstract: Provided is a liquid crystal projector which prevents deterioration of an aluminum grid inorganic polarizing plate due to dusts included in cooling wind for cooling a liquid crystal panel module. A shade member is provided along a surface of the inorganic polarizing plate on which the cooling wind is received, to prevent the surface from being directly receiving the cooling wind and thus prevent attachment of dusts. In order to reduce a cooling effect due to the shade member, 0.9t?a?1.5t and 0.5t?b?1.5t are satisfied, where a represents a width of the shade member, b represents a distance between the shade member and the polarizing plate, and t represents a thickness of the polarizing plate. As a result, it is possible to obtain the cooling effect and the effect of reducing the dusts at the same time.

Abstract: A projector includes: a lighting device that emits light of a plurality of different colors; a plurality of liquid crystal light valves that modulate the light of a plurality of colors; a color synthesizing optical system that synthesizes the color light modulated by the plurality of liquid crystal light valves; and a projection optical system that projects the light synthesized by the color synthesizing optical system to a projection target face. A cell thickness of one liquid crystal light valve modulating light of one color of the plurality of liquid crystal light valves is smaller than a cell thickness of the other liquid crystal light valves modulating the light of other colors, and an alignment state of liquid crystal at the time of applying the maximum gradation voltage is substantially the same in one liquid crystal light value and the other liquid crystal light valve.

Abstract: Device for generating polarized electromagnetic radiation has a diffuser and a polarizer. The diffuser is arranged in a beam path of the electromagnetic radiation. The polarizer is arranged in the beam path of the electromagnetic radiation, to be precise downstream of the diffuser in the direction of propagation of the electromagnetic radiation. The polarizer has a reflective side facing the diffuser, said reflective side being at least partly reflective to the electromagnetic radiation. The polarizer transmits electromagnetic radiation having a predefined polarization and reflects electromagnetic radiation not having the predefined polarization back to the diffuser. The diffuser scatters, in a non-polarization-maintaining manner, at least one portion of the reflected-back electromagnetic radiation not having the predefined polarization.

Abstract: An air-cooling apparatus which cools an imaging unit with a plurality of LCD panels and a polarizer assembly includes a cooling fan, and a cooling duct which directs air expelled from the cooling fan onto the plurality of LCD panels and the polarizer assembly, and the cooling duct includes a plurality of channels corresponding to the plurality of LCD panels, and at least two channels from among the plurality of channels are bent in a vertical direction.

Abstract: A projection apparatus for providing multiple viewing angle images is disclosed. The projection apparatus includes a light source module, a polarizing light splitting element, a first and a second reflective light valve and a light combining element. The polarizing light splitting element has a light incident surface, a first light exiting surface and a second light exiting surface. The light incident surface optically couples with the light source module, while the first and the second light exiting surfaces optically couple with the first and the second reflective light valves respectively. The light combining element optically couples to the reflective light valves. Further, the light source module sequentially provides a first light beam and a second light beam. The light beams are transferred via the polarizing light splitting element, the reflective light valves and the light combining element to provide at least four viewing angle images to the viewers.

Abstract: The frontlight illumination system is intended for enhancing illumination of a reflective display having pixels arranged in a matrix pattern and using monochromatic laser lights as light sources. The unit contains a network of light-distributing planar ridge waveguides with holograms arranged in a matrix pattern that corresponds to the matrix pattern of the reflective display. The light-distributing holograms of the system are formed on opposite sides of each core of respective light-distributing planar ridge waveguides. Neighboring holograms located on opposite sides of the core are combined into pairs and are arranged on each core in positions at which they interact with a predetermined phase shift that doubles the intensity of light directed to the reflective display and extinguishes light directed to the external surface.

Abstract: The present invention is directed to display technologies. More specifically, various embodiments of the present invention provide projection display systems where one or more laser diodes are used as light source for illustrating images. In one set of embodiments, the present invention provides projector systems that utilize blue and/or green laser fabricated using gallium nitride containing material. In another set of embodiments, the present invention provides projection systems having digital lighting processing engines illuminated by blue and/or green laser devices. In one embodiment, the present invention provides a 3D display system. There are other embodiments as well.

Abstract: A projection apparatus includes a shutter mechanism to prevent light from reaching an image plane during calibration of light sources. The shutter mechanism may include liquid crystal material that exhibits an effective index of refraction that varies with applied voltage. During calibration, a light beam is shuttered, light sources are driven by calibration data, and optical power is measured.

Abstract: A laser-based imaging system (200) is configured to reduce perceived speckle in images (201). The imaging system (200) includes one or more laser sources (207), a light modulator (204) configured to produce the images (201) with light (205) from the laser sources (207), and one or more active polarization switches (206) disposed in an optical path of the imaging system (200). The active polarization switch (206) is configured to alternate a polarization orientation of the light in synchrony with an image refresh cycle of the system. The active polarization switch can be clocked in accordance with a clocking angle to optimize speckle reduction. Additionally, one or more light preconditioners (991,992) may be used to help optimize speckle reduction.

Abstract: A projector includes a liquid crystal light valve to which the image data is written in a line sequential manner, a polarization switching element for switching between the first and second polarization states throughout the switching areas in a line sequential manner, and a birefringent optical element for changing the light path of the incident light in accordance with the polarization state thereof. The boundary position between the switching areas of the first and second polarization states moves in sync with the boundary position between the first and second image data writing areas corresponding to the first and second sub-frame.

Abstract: One or more embodiments of a method and apparatus taught herein provide an electronic display projection assembly that comprises an electronic display configured to display an image, and a transparent glass layer positioned on one side of the electronic display on which the image is displayed. A projection layer is located on a surface of the glass layer. A projecting layer is positioned between the electronic display and the glass layer, and comprises a plurality of microlenses for projecting the displayed image onto the projection layer. The projecting and projection layers may be located on either opposing sides of the transparent glass layer, or on the same side beneath the glass layer. A corresponding method of providing an image from an electronic display is also disclosed.

Abstract: An illumination device includes: a light source section including a laser light source; a uniformization optical member including a plurality of unit cells which are two dimensionally arranged, and receiving light from the light source section; an optical device disposed on an optical path between the light source section and the uniformization optical member; and a drive section vibrating the optical device, in which an expression (1) is satisfied: {6×f×tan(?f)}>Pf ??(1) where f is a focal length of the unit cell, Pf is a pitch of the unit cell, ?f is a marginal ray angle in a light flux emitted from the optical device to enter the uniformization optical member.

Abstract: According to one embodiment, an image display device includes a liquid crystal lens device and an image display unit. The liquid crystal lens device includes a liquid crystal optical element unit. The liquid crystal optical element unit includes a first substrate unit, a second substrate unit and a liquid crystal layer. The liquid crystal layer is provided between the first and second substrate units. The liquid crystal layer has an alignment twisted by an angle not less than 5 degrees and not more than 45 degrees along a normal axis of a major surface of the first substrate unit. The image display unit includes a display unit. The second substrate unit is disposed between the first substrate unit and the display unit.

Abstract: A projector is provided with a radiation source adapted to radiate an electromagnetic wave during an operation and an exterior housing adapted to house the radiation source inside, wherein the exterior housing includes a first housing made of synthetic resin, and a second housing including a shield material adapted to block the electromagnetic wave, and disposed at a position for covering the radiation source in a plan view.

Abstract: A projection device includes a light source, a light guiding plate, a liquid crystal device, and a projection lens. The guiding plate aligns with the light source and includes a light incident surface and a light emitting surface facing away from the light incident surface. The light incident surface faces the light source. The liquid crystal device aligns with the light emitting surface. The projection lens is positioned between the liquid crystal device and a screen.

Abstract: An electro-optic device includes: an electro-optic panel; a first flexible printed circuit; a second flexible printed circuit; and a conductive section. Each of the first flexible printed circuit and the second flexible printed circuit has a structure in which a reference potential layer and a signal potential layer are laminated after being insulated from each other, the reference potential layer applying a reference potential to the electro-optic panel, the signal potential layer applying a signal potential to the electro-optic panel, and the first flexible printed circuit and the second flexible printed circuit each having an opening in which a part of the reference potential layer is exposed. The conductive section electrically connects the part exposed in the opening of the reference potential layer in the first flexible printed circuit and the part exposed in the opening of the reference potential layer in the second flexible printed circuit to each other.