Abstract: A quantum dot display device includes a substrate, a quantum dot diode disposed on the substrate and including a first electrode, a second electrode, and a quantum dot layer between the first electrode and the second electrode, and an encapsulation film disposed on a surface of the quantum dot diode, wherein a water vapor transmission rate of the encapsulation film is about 0.001 to about 1 gram per square meter per day at 1 atmosphere of pressure.

Abstract: A near-eye display device includes an image source, a waveguide, and a controller. The waveguide is configured to propagate light received the image source to a user of the near-eye display device, and includes a holographic grating comprising a plurality of angularly multiplexed holograms. The controller is configured to control display of an image via the image source.

Abstract: The disclosure provides a display panel, a method for fabricating the same, and a display device. The display panel includes a plurality of pixel elements distributed in an array, each of which includes a plurality of sub-pixel elements, wherein there is a photon crystal film layer arranged on a light exit side of the pixel elements in the display panel, and the photon crystal film layer includes photon crystal areas corresponding to the respective sub-pixel elements in a one-to-one manner; and there are a plurality of micro-holes structures arranged uniformly in each photon crystal area, and apertures of the micro-hole structures in the respective photon crystal areas match colors of light to be displayed at the sub-pixel elements corresponding to the photon crystal areas.

Abstract: Embodiments of the present disclosure provide a display substrate and a method of manufacturing the same, and a display panel including the display substrate. The display substrate includes a base substrate and an optical film layer formed on the base substrate, and the optical film layer is configured to filter out light having a wavelength in a selected wavelength range. The display substrate may be an array substrate or a color substrate.

Abstract: The present disclosure provides a display device, belonging to a field of display technology, and can address a problem in an existing display device that short-wavelength blue light causes harm to human eyes. The display device includes a light attenuation unit, wherein the light attenuation unit comprises at least one first layer and at least one second layer which are alternately provided, the first layer having a refractive index greater than a refractive index of the second layer, and the light attenuation unit is configured to reduce a transmittance of the short-wavelength blue light among incident light.

Abstract: A display method for a display apparatus is disclosed. The display apparatus includes pixel sets each including a luminance increasing pixel and display pixels. Each of the luminance increasing pixel and the display pixels consists of sub-pixels of a first primary color, a second primary color and a third primary color. The display method includes acquiring gray scale values of the sub-pixels in the display pixels; determining, according to the gray scale values, gray scale values of the sub-pixels in the luminance increasing pixels; inputting, according to the gray scale values of the sub-pixels in the luminance increasing pixels, a luminance increasing data signal to the luminance increasing pixel such that the luminance increasing pixel emits light of a white gray scale; and inputting, according to the gray scale values of the sub-pixels in the display pixels, data signals for the primary colors, to the display pixels.

Abstract: [Object] Provided are an electrode substrate film in which a circuit pattern formed of a metal thin line is less visible even under highly bright illumination, and a laminate film applied to the same. [Solving Means] An electrode substrate film with a transparent substrate 52 and a metal laminate thin line includes a metal absorption layer 51 with a film thickness of 20 nm to 30 nm inclusive as a first layer, and a metal layer 50 as a second layer, counted from the transparent substrate side, the laminate thin line having a line width of 20 ?m or less. Optical constants of the metal absorption layer in a visible wavelength range (400 to 780 nm) satisfy conditions that a refractive index is 2.0 to 2.2 and an extinction coefficient is 1.8 to 2.1 at a wavelength of 400 nm, the refractive index is 2.4 to 2.7 and the extinction coefficient is 1.9 to 2.3 at a wavelength of 500 nm, the refractive index is 2.8 to 3.2 and the extinction coefficient is 1.9 to 2.5 at a wavelength of 600 nm, the refractive index is 3.

Abstract: The present invention relates to a display device.

Abstract: A reflective display device provided with an optical layer which is capable of improving adhesion between a substrate and a reflective layer and controlling a color of reflected light is disclosed. The reflective display device includes first and second substrates facing each other, each of which includes a display area and a reflective area; a display element provided in the display area; a reflective layer provided in the reflective area and arranged on one surface of the second substrate to reflect incident light; and an optical layer arranged between the second substrate and the reflective layer.

Abstract: A display device includes a light source to generate a beam of a first color. The display device also includes a display panel having at least one pixel including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, wherein the second color sub-pixel is configured to generate a beam of the second color by reacting with the beam of the first color, the third color sub-pixel is configured to generate a beam of the third color by reacting with the beam of the first color, and the first color sub-pixel is configured to allow the beam of the first color to pass therethrough. The display device further includes a beam path converter disposed between the light source and the display panel to direct the beam of the first color from the light source toward the display panel.

Abstract: A display apparatus includes a display module including a light conversion member including a plurality of quantum dots, a backlight unit providing a first light to the display module, and an optical filter disposed between the display module and the backlight unit. The optical filter includes a transmission filter layer transmitting a light in the first wavelength range and a second wavelength range, reflecting a light in a third wavelength range, and having a first effective refractive index and a viewing angle control layer disposed between the transmission filter layer and the display module to couple the transmission filter layer and the display module and having a second effective refractive index equal to or smaller than the first effective refractive index.

Abstract: The invention provides an array substrate and a liquid crystal display panel, by means of that colored photoresist layers of different colors disposed above metal wires are overlapped with each other to thereby form an opaque light shielding layer covering the metal wires so as to replace a black matrix, and therefore there is no need of a mask process for preparing the black matrix, so that it could reduce types and numbers of used masks, simplify manufacturing process and reduce production costs.

Abstract: The liquid crystal display panel comprises an upper glass substrate and a lower glass substrate, wherein the upper glass substrate comprises a plurality of color-resist units, each of which comprises a red color-resist element, a green color-resist element, and a blue color-resist element that are spaced from one another, and a plurality of black matrixes each being arranged between two adjacent color-resist elements; and wherein the lower glass substrate comprises a plurality of optical filter layers arranged on an outside surface thereof, said optical filter layers corresponding to red color-resist elements, green color-resist elements, and blue color-resist elements respectively, and each optical filter layer having a color the same as a corresponding color-resist element. The structure of the liquid crystal display panel according to the present disclosure is simple.

Abstract: The invention relates to an illumination device for illuminating at least one light modulator system of a liquid crystal display, the device comprising at least one waveguide substrate for guiding at least one targeted light beam that can be coupled into the waveguide substrate. The waveguide substrate is at least in optical contact with at least one holographic optical decoupling substrate comprising a plurality of decoupling regions and a decoupling region is at least designed to decouple part of the targeted light beam in the form of a plurality of sub-beams in the direction of the light modulator system. At least one diffuser module is provided, said diffuser module being designed in such a way that at least the outermost sub-beams of two neighboring decoupling regions are at least adjacent to one another before exiting the diffuser module.

Abstract: The disclosure discloses a color filter substrate, a method for fabricating the same, and a liquid crystal display panel, the color filter substrate includes: a base substrate; a photonic crystal layer formed on a side of the base substrate, wherein color resistance areas corresponding to sub-pixel elements in a one-to-one manner are arranged at the photonic crystal layer and color resistance areas in different colors are arranged alternately; an arrayed waveguide grating layer arranged on a side of the photonic crystal layer facing away from the base substrate, wherein there are different angles of gratings at the arrayed waveguide grating layer to control output light rays to be irradiated onto different color resistance areas of the photonic crystal layer at different incident angles; and a wave separating layer formed on a side of the arrayed waveguide grating layer facing away from the base substrate.

Abstract: A display device includes a liquid crystal display panel (3) and a backlight source (2), and further includes a plurality of bandpass filters (1) corresponding to respective pixel units of the liquid crystal display panel (3), the bandpass filters (1) being configured to perform narrowband filtering on the light emergent from the backlight source (2). By adopting the bandpass filters (1), the narrowband filtering on the red, green and blue light is realized by using a narrowband interference filtering method, such that the effect of improving the gamut of the display device is achieved and the high-gamut display is realized.

Abstract: The present invention provides a display device, which includes a color filter, a quantum dot (QD)-injected photonic crystal film, and a backlight module. The QD-injected photonic crystal film is formed by injecting QDs into a photonic crystal film. Due to the light guiding effect of the photonic crystal, the light emission efficiency of the QDs can be effectively improved. The photonic crystal film includes red, green, and blue light transmission zones. The QDs injected into red, green, and blue light transmission zones of the photonic crystal film are respectively red, green, and blue QDs, so that when white mixed light emitting from the backlight source reaches the QD-injected photonic crystal film, light transmission zones of the photonic crystal film allow only light of corresponding colors to pass such that the QDs contained therein emit light of corresponding colors. Further, these colors of light respectively transmit through the color filters of corresponding colors.

Abstract: A display device is mounted on and/or inside the eye. The eye mounted display contains multiple sub-displays, each of which projects light to different retinal positions within a portion of the retina corresponding to the sub-display. The projected light propagates through the pupil but does not fill the entire pupil. In this way, multiple sub-displays can project their light onto the relevant portion of the retina. Moving from the pupil to the cornea, the projection of the pupil onto the cornea will be referred to as the corneal aperture. The projected light propagates through less than the full corneal aperture. The sub-displays use spatial multiplexing at the corneal surface. Various electronic devices interface to the eye mounted display.

Abstract: A display device includes a display panel and a backlight unit. The display panel is configured to display an image. The backlight unit is configured to provide light to the display panel. The display panel includes an array substrate including a plurality of pixel areas, an opposite substrate facing the array substrate, a liquid crystal layer disposed between the array substrate and the opposite substrate, and a wavelength-selective transflective member disposed on the array substrate or the opposite substrate.

Abstract: A color filter array substrate, a method for fabricating the same and a display device are disclosed. The color filter array substrate includes a plurality of gate lines and a plurality of data lines disposed as intersecting each other horizontally and vertically and a plurality of pixel regions defined by the gate lines and the data lines, each of the pixel regions includes a TFT, wherein each of the pixel regions further includes a band-pass filter layer, the band-pass filter layer transmits light within a specific wavelength range while reflects light of other wavelengths; the band-pass filter layer comprises a first medium sub-layer, a second medium sub-layer and a third medium sub-layer, the second medium layer is of different thicknesses at different pixel regions.

Abstract: An electro-optic modulator can include a polymer film including liquid crystal (LC) droplets in the polymer film and a transparent electrode layer on an upper surface of the polymer film. A cholesteric liquid crystal (CLC) polymer reflection film can be on a lower surface of the polymer film opposite the transparent electrode layer.

Abstract: It is an object to propose a display device in which reflection of external light on a reflective polarizing plate is prevented and also extraction efficiency of light from a light-emitting layer is improved. If the display device has a light-emitting layer provided over a reflective electrode, a transparent electrode provided over the light-emitting layer, a transparent substrate provided over the transparent electrode, a reflective polarizing plate provided over the transparent substrate, a quarter wave plate provided over the reflective polarizing plate, and a polarizing plate provided over the quarter wave plate, reflection of an outside image can be suppressed, and light emitted in the light-emitting layer can be extracted efficiently.

Abstract: A display panel for use with a multi-panel display includes an array of display pixels to emit pixel light. A fiber bundle including an array of fibers is disposed over the array of display pixels. The fiber bundle includes a first end of the array of fibers rigidly fixed adjacent to the array of display pixels and optically aligned with the array of display pixels and a loose fiber portion that permits a second end of the array of fibers opposite the first end to slump-over and move. The fiber bundle receives the pixel light emitted from the array of display pixels into the first end of the array of fibers and emits the pixel light out the second end of the array of fibers.

Abstract: A display substrate is disclosed. In one aspect, the display substrate includes a base substrate having a first refractive index and receiving external light and an insulating layer disposed below the base substrate and having a second refractive index different from the first refractive index. The display substrate also includes a pixel electrode disposed below the first insulating layer and a first compensation layer forming an interface with the insulating layer and having a third refractive index greater than the first refractive index and less than the second refractive index. The first compensation layer is disposed between the first insulating layer and the base substrate.

Abstract: Provided is a liquid crystal display including: a lower display panel including a lower insulating substrate and a lower reflective layer; an upper display panel including an upper insulating substrate and an upper reflective layer; a liquid crystal layer positioned between the lower reflective layer of the lower display panel and the upper reflective layer of the upper display panel; and a backlight unit positioned on a lower portion of the lower display panel and including a light source, wherein a pair of field generating electrodes are formed in at least one display panel of the lower display panel and the upper display panel, wherein microcavities are formed in the lower reflective layer, the upper reflective layer, and the liquid crystal layer, and wherein a wavelength and luminance of light resonated and emitted in the microcavities are changed by an electric field generated by the field generating electrodes.

Abstract: An electro-optical device may include a first substrate, a second substrate, a photo-curable seal member between the first substrate and the second substrate, a first light-shielding layer between the first substrate and the photo-curable seal member, and a second light-shielding layer between the first substrate and the first light-shielding layer. The first substrate may include a pixel area in which pixels are aligned, and a seal region around the pixel area and in which the photo-curable seal member is provided. Within the seal region, the second light-shielding layer may be larger in an outer shape or pattern than the shape or pattern of first light-shielding layer. The pixel area may include an interconnect layer made of the same layer as the one of the light-shielding layers, and the interconnect layer may be narrower than one of the light-shielding layers.

Abstract: A color filter, comprising: a substrate; a plurality of first pixel regions, a plurality of second pixel regions and a plurality of third pixel regions defined on a first side of the substrate; and a band pass filter layer comprising a first medium sub layer, a second medium sub layer and a third medium sub layer successively formed on a second side of the substrate or on the plurality of first pixel regions, the plurality of second pixel regions and the plurality of third pixel regions, wherein the second medium sub layer has a first thickness in a first medium area corresponding to the first pixel region, a second thickness in a second medium area corresponding to the second pixel region and a third thickness in a third medium area corresponding to the third pixel region. The present invention also relates to a method for manufacturing the color filter.

Abstract: Thermochromic filters use combinations of absorptive, reflective, thermoabsorptive, and thermoreflective elements covering different portions of the solar spectrum, to achieve different levels of energy savings, throw, shading, visible light transmission, and comfort. Embodiments include stopband filters in the near-infrared spectrum.

Abstract: An optical unit includes a light source that emits light to be projected onto a screen, one or a plurality of optical elements that controls a spread of a beam of light from the light source to the screen, a combining element that combines the light emitted from the light source, and a scanning element. The light source outputs an optical beam that will generate an elliptically shaped beam spot on the screen, the beam spot having a major axis substantially perpendicular to a scanning direction, and the light source is driven with pulse width modulation (PWM) so that one driven pulse corresponds to one beam spot on the screen.

Abstract: According to one embodiment, an interference filter includes a base body, a lower semi-transmissive layer, and an upper semi-transmissive layer. The base body includes a major surface. The lower semi-transmissive layer is provided on the major surface. The upper semi-transmissive layer is provided on the lower semi-transmissive layer. The base body, the lower and upper semi-transmissive layers form a first region to selectively transmit blue light, a second region to selectively transmit green light, and a third region to selectively transmit red light, arranged in a plane parallel to the major surface. A distance between the lower semi-transmissive layer and the upper semi-transmissive layer in the second region is shorter than a distance between the lower semi-transmissive layer and the upper semi-transmissive layer in the first region, and shorter than a distance between the lower semi-transmissive layer and the upper semi-transmissive layer in the third region.

Abstract: According to one embodiment, a display device includes an interference filter including following layers, and a display layer. The first common layer includes first and second regions. The second common layer faces the first common layer. The first spacer layer is provided between the first and second common layers and includes first and second portions facing the first and second regions. The thickness of the first portion is different from the thickness of the second portion. The second spacer layer faces at least one of the first and second portions through the second common layer and is made of the same material as that of the first spacer layer. The coating layer faces the second common layer through the second spacer layer.

Abstract: An object of the invention is to provide a display device having a high contrast ratio. Another object of the invention is to manufacture such a high-performance display device at low cost. In a display device having a display element between a pair of light-transmissive substrates, polarizer-including layers, which have different wavelength distributions of extinction coefficients, are stacked so that absorption axes are in a parallel nicol state, over each light-transmissive substrate. Absorption axes of one of a pair of stacks of polarizers and the other together which interpose the display element are deviated from a cross nicol state. A retardation plate may be provided between the stack of polarizing plates and the substrate.

Abstract: An electro-optical device includes a pair of substrates bonded together via a seal member disposed in a seal region, and a plurality of light-shielding layers formed so as to overlap with each other on one of the substrates, and one of the plurality of light-shielding layers is larger in outer shape than another light-shielding layer formed at a level higher than the one of the light-shielding layer, in plan view from above the one of the substrates.

Abstract: A liquid crystal display device includes: one side substrate; the other side substrate that is disposed to be opposed to the one side substrate; a liquid crystal layer that is sandwiched between the one side substrate and the other side substrate; and a light source that illuminates light on the liquid crystal layer from the outside of the other side substrate. At a specific peak wavelength, in a region shorter than a wavelength of blue light in a visible light region of the light illuminated from the light source, a transmittance from the other side substrate to the liquid crystal layer is smaller than a transmittance from the one side substrate to the liquid crystal layer.

Abstract: An optical wavelength selective device includes a waveguide grating unit to separate input beam signals with different wavelengths into a plurality of output beam signals, each of which has a different wavelength span and is output from a different channel region of the waveguide grating unit; a polarization splitting unit to split each of the output beam signals into a first polarized beam with a first polarization and a second polarized beam with a second polarization different from the first polarization; a birefringence control member to control the first polarized beam to undergo a different refractive effect than the second polarized beam when the first and second polarized beams pass through the birefringence control member under a first voltage applied thereto; and a reflection member configured to reflect the first and second polarized beams output from the birefringence control member back to the birefringence control member.

Abstract: A liquid crystal display (LCD) includes an array substrate having pixel regions, the pixel regions including thin film transistors and pixel electrodes, a color filter substrate above the array substrate, the color filter substrate including a plurality of color filters corresponding to respective pixel regions in the array substrate, a black matrix in spaces between the plurality of color filters, and a color frame layer surrounding the plurality of color filters and the black matrix, and a liquid crystal layer interposed between the array substrate and the color filter substrate.

Abstract: Discussed are a color filter using a surface plasmon and a liquid crystal display (LCD) device, the color filter capable of enhancing a transmittance ratio of an LC panel by having a 3D pattern structure of a transmissive pattern for selectively transmitting light of a specific wavelength, and capable of simplifying entire processes. According to the color filter using a surface plasmon and the LCD device, not only three colors of RGB but also multi-colors can be implemented, and color reproduction can be enhanced by optimizing arrangement of the transmissive pattern according to the number of colors to be implemented.

Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including pixel electrodes disposed, respectively, in a first color pixel on one end side of an active area and in a second color pixel on the other end side of the active area, a light-shield layer which surrounds the first color pixel and the second color pixel and extends to a peripheral area surrounding the active area, a first color filter disposed in the first color pixel, a second color filter disposed in the second color pixel, a dummy color filter which is stacked on the light-shield layer in the peripheral area, creates a distance between second color filter and the dummy color filter and is continuous with the first color filter.

Abstract: According to one embodiment, a liquid crystal display apparatus includes an interference filter, a transistor, a substrate, and a liquid crystal layer. The interference filter includes a first area and a second area. The first area transmits light in a first wavelength band and reflects light except the first wavelength band. The second area transmits white light. The transistor is provided on the first area and the second area. The substrate faces the interference filter. The liquid crystal layer is provided between the interference filter and the substrate.

Abstract: A beam light source of an image display device which displays an image on a screen by scanning an optical beam in a two-dimensional direction in which the beam light source includes a light source that emits a diffuse light modulated according to an image signal, and an optical element that shapes the light emitted from the light source to the optical beam. The optical beam has an elliptically shaped beam spot on the screen in which a major axis of the beam spot is substantially perpendicular to a scanning direction. A horizontal spot size of the optical beam on an exit surface of the optical element is at least or equal to a horizontal spot size of the optical beam on the screen, and the horizontal spot size of the optical beam on the screen is no greater than a horizontal pixel pitch displayed on the screen.

Abstract: In one embodiment, a liquid crystal display device includes first and second substrates, an active area to display an image, a seal material surrounding the active area, and an intermediate area between the active area and the seal area. In the intermediate area, first and second color filters are formed on the second substrate. An overcoat layer is laminated on the first and second color filters. First and second pillar-shaped spacers are provided between the overcoat layer and the first substrate corresponding to the first and second color filters to form a first and second cell gaps between the first and second substrates, respectively. The first cell gap adjacent to the active area between the first and second substrates is smaller than the second cell gap adjacent to the seal area in the intermediate area.

Abstract: An electrophoretic element includes: an electrophoretic particle; a porous layer formed of a fibrous structure containing a non-migrating particle having optical reflective characteristics different from those of the electrophoretic particle and having a plurality of pores; and a partition that is partially adjacent to the porous layer and defines a space for accommodating the electrophoretic particle. An area rate of the pores per unit area of the porous layer is small in an adjacent region where the partition is adjacent to the porous layer compared with in a non-adjacent region where the partition is not adjacent to the porous layer.

Abstract: In one embodiment, a liquid crystal display device includes a first substrate having a first pixel electrode and a first pillar-shaped spacer arranged in an active area, and a second pixel electrode and a second pillar-shaped spacer arranged in a shield area surrounding the active area. A shield layer is formed in the shape of a belt crossing above the first pillar-shaped spacer in the active area and extending to the shield area including a portion above the second pillar-shaped spacer. The height of a first seat layer formed above the first pillar-shaped spacer and including the shield layer, a first color filter layer and an overcoat layer is substantially the same as that of a second seat layer formed above the second pillar-shaped spacer and including the shield layer, a second color filter layer and the overcoat layer.

Abstract: According to one embodiment, an interference filter includes a base body, a lower semi-transmissive layer, and an upper semi-transmissive layer. The base body includes a major surface. The lower semi-transmissive layer is provided on the major surface. The upper semi-transmissive layer is provided on the lower semi-transmissive layer. The base body, the lower and upper semi-transmissive layers form a first region to selectively transmit blue light, a second region to selectively transmit green light, and a third region to selectively transmit red light, arranged in a plane parallel to the major surface. A distance between the lower semi-transmissive layer and the upper semi-transmissive layer in the second region is shorter than a distance between the lower semi-transmissive layer and the upper semi-transmissive layer in the first region, and shorter than a distance between the lower semi-transmissive layer and the upper semi-transmissive layer in the third region.

Abstract: Discussed are an FFS mode LCD device capable of enhancing a transmittance ratio by including a color filter of a three-dimensional pattern structure having a transmissive pattern for selectively transmitting light of a specific wavelength by using a surface plasmon phenomenon, and a method for fabricating the same. The metal layer using a surface plasmon is utilized as a common electrode of the array substrate, and the pixel electrode having slits is formed on the metal film, thereby generating a fringe field. This may simplify the entire processes, and remove color filter processing lines, thereby reducing the installation costs.

Abstract: Example embodiments relate to a photonic crystal optical filter, a transmissive color filter, a transflective color filter, and a display apparatus using the photonic crystal optical filter. The transmissive color filter may include a transparent substrate; a barrier layer formed on the transparent substrate and having a plurality of pixel areas; and a plurality of photonic crystal units formed on the plurality of pixel areas. Each of the plurality of photonic crystal units may have a structure such that a first material having a relatively high refractive index and a second material having a relatively low refractive index are periodically arranged so as to transmit light having a wavelength band corresponding to a photonic band gap. An optical cut-off layer may be formed on the first material.

Abstract: A liquid crystal display device includes a reflective color filter arranged to intersect with an optical path of light emerging from a principal surface of a light guide plate, and a recycle portion arranged at a side of the light guide plate opposite to the reflective color filter. Out of light incident on the light guide plate, light reflected by the reflective color filter is returned to the reflected color filter again by being reflected by the recycle portion via the light guide plate.

Abstract: Disclosed are a color compensation multi-layered member for a display apparatus, an optical filter for a display apparatus having the same, and a display apparatus having the same. The color compensation multi-layered member for a display apparatus includes a thin layer having a thickness of about 780 nm or less and a first refractive index; a first thick layer having a greater thickness than the thin layer, being formed on a surface of the thin layer, and having a second refractive index; and a second thick layer having a greater thickness than the thin layer, being formed on another surface of the thin layer, and having a third refractive index.

Abstract: According to one embodiment, a liquid crystal display device of a guest-host type includes an array substrate including a switching element and a reflective electrode connected to the switching element, a counter-substrate including a counter-electrode which is opposed to the reflective electrode, and a liquid crystal layer held between the array substrate and the counter-substrate, and including liquid crystal molecules and dichroic dyes. The liquid crystal layer has a blue phase.

Abstract: A light unit which includes a plurality of light-emitting diode (LED) light sources arranged in parallel, a light-guiding member arranged on said LED light sources, a light reflecting part for reflecting light from said LED light sources forward, a light diffusion part for outgoing light from the surface of said light-guiding member to outside, and an optical path changing part arranged above said light-diffusion part, wherein a side of said light-guiding member that faces said light diffusion part is flat.