JP2008197398A - Optical element package, backlight and liquid crystal display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical element package which can remedy the rigidity deficiency of an optical element while suppressing an increase in the thickness of a liquid crystal display device or a deterioration in the display characteristics of the liquid crystal display device, and to provide a backlight and a liquid crystal display device each equipped with the same. <P>SOLUTION: The optical element package is provided with one or two or more optical elements, a support which supports the one or two or more optical elements, and a package member which wraps the one or two or more optical elements and the support. The support has an incident surface on which the light from a light source is made incident and an exit surface which emits the light incident from the first surface toward a liquid crystal panel. The at least one surface of the incident surface and the exit surface is in a concave or convex shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an optical element package, and a backlight and a liquid crystal display device including the same. Specifically, the present invention relates to an optical element package that improves display characteristics of a liquid crystal display device.

  Conventionally, in a liquid crystal display device, a large number of optical elements are used for the purpose of improving the viewing angle and the luminance. As these optical elements, film-like or sheet-like materials such as a diffusion film and a prism sheet are used.

  FIG. 31 shows a configuration of a conventional liquid crystal display device. As shown in FIG. 31, the liquid crystal display device includes an illuminating device 101 that emits light, a diffusion plate 102 that diffuses light emitted from the illuminating device 101, and condensing light diffused by the diffusing plate 102. A plurality of optical elements 103 for diffusing and a liquid crystal panel 104 are provided.

  By the way, with the recent increase in size of image display devices, the weight and size of optical elements tend to increase. If the weight or size of the optical element increases as described above, the optical element is insufficiently rigid, and the optical element is deformed. Such deformation of the optical element affects the optical directivity on the display surface and causes a serious problem of luminance unevenness.

  Accordingly, it has been proposed to improve the rigidity of the optical element by increasing the thickness of the optical element. However, the liquid crystal display device becomes thick, and the advantages of the thin and lightweight liquid crystal display device are impaired. Thus, it has been proposed to improve the lack of rigidity of a sheet-like or form-like optical element by bonding optical elements together with a transparent adhesive (see, for example, Patent Document 1).

JP 2005-301147 A

  However, in the technique of Patent Document 1, since the optical elements are bonded together with a transparent adhesive, the thickness of the optical elements increases and the liquid crystal display device itself becomes thick. Furthermore, in order to develop an optical function that is indispensable for a liquid crystal display device, a pressure-sensitive adhesive is used to embed a space between structures of the light condensing functional layer and the diffusion functional layer and the adjacent optical functional layer. As a result, the optical function is impaired, and the display characteristics are deteriorated.

  Accordingly, an object of the present invention is to provide an optical element package that can improve the lack of rigidity of an optical element while suppressing an increase in thickness of the liquid crystal display apparatus or deterioration of display characteristics of the liquid crystal display apparatus, and a bag including the same. It is to provide a light and a liquid crystal display device.

  The present inventors have intensively studied to solve the above-described problems of the prior art. The outline will be described below.

  As a result of intensive studies to improve the rigidity of the optical element while suppressing the increase in the thickness of the liquid crystal display device or the deterioration of the display characteristics of the liquid crystal display device, the present inventors have determined that the optical element and the support are It came to invent the optical element packaging body formed by packaging with a packaging member.

However, according to the knowledge of the present inventors, the packaging member may be bent depending on the heat generated from the light source or the usage environment of the liquid crystal display device. Therefore, the present inventors have intensively studied to suppress the occurrence of this bending and the like. As a result, the present inventors have found that the support is provided with a convex surface or the like.
The present invention has been devised based on the above studies.

In order to solve the above-mentioned problem, the first invention
One or more optical elements;
A support that supports one or more optical elements;
A packaging member that wraps one or more optical elements and a support,
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the first surface toward the liquid crystal panel;
At least one of the entrance surface and the exit surface has a concave shape or a convex shape.

The second invention is
A light source that emits light;
An optical element package that improves the characteristics of light emitted from the light source and emits light to the liquid crystal panel;
The optical element package is
One or more optical elements;
A support that supports one or more optical elements;
A packaging member that wraps one or more optical elements and a support,
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the first surface toward the liquid crystal panel;
The backlight is characterized in that at least one of the entrance surface and the exit surface is concave or convex.

The third invention is
A light source that emits light;
An optical element package for improving the characteristics of the light emitted from the light source;
A liquid crystal panel that displays an image based on light whose characteristics have been improved by the optical element package,
The optical element package is
One or more optical elements;
A support that supports one or more optical elements;
A packaging member that wraps one or more optical elements and a support,
The support is
An incident surface on which light from the light source is incident;
And an exit surface that emits light incident from the entrance surface toward the liquid crystal panel,
The liquid crystal display device is characterized in that at least one of an incident surface and an output surface has a concave shape or a convex shape.

The fourth invention is:
A light source that emits light;
An optical element package that improves the characteristics of light emitted from the light source and emits light to the liquid crystal panel;
The optical element package is
One or more optical elements;
A support that supports one or more optical elements;
A packaging member that wraps one or more optical elements and a support,
The support is
An incident surface on which light from the light source is incident;
And an exit surface that emits light incident from the entrance surface toward the liquid crystal panel,
The backlight is characterized in that the optical element on the exit surface side is used as a support.

The fifth invention is:
A light source that emits light;
An optical element package for improving the characteristics of the light emitted from the light source;
A liquid crystal panel that displays an image based on light whose characteristics have been improved by the optical element package,
The optical element package is
One or more optical elements;
A support that supports one or more optical elements;
A packaging member that wraps one or more optical elements and a support,
The support is
An incident surface on which light from the light source is incident;
And an exit surface that emits light incident from the entrance surface toward the liquid crystal panel,
A liquid crystal display device characterized in that an optical element on the exit surface side is used as a support.

  In the present invention, since one or more optical elements and the support are wrapped by the packaging member, the one or more optical elements and the support can be integrated. Therefore, the support member can compensate for the lack of rigidity of the optical element. Moreover, since at least one surface of the entrance surface and the exit surface of the support is concave or convex, it is possible to suppress the bending of the packaging member.

  As described above, according to the present invention, an insufficient rigidity of the optical element can be improved while suppressing an increase in the thickness of the liquid crystal display device or a deterioration in display characteristics of the liquid crystal display device. Moreover, since the bending of a packaging member can be suppressed, the fall of the display characteristic of the liquid crystal display device provided with the packaging member can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings of the following embodiments, the same or corresponding parts are denoted by the same reference numerals.

(1) First Embodiment (1-1) Configuration of Liquid Crystal Display Device FIG. 1 shows a configuration example of a liquid crystal display device according to a first embodiment of the present invention. As shown in FIG. 1, the liquid crystal display device is characterized by the illumination device 1 that emits light, the optical element package 2 that improves the characteristics of the light emitted from the illumination device 1, and the optical element package 2. And a liquid crystal panel 3 for displaying an image based on the improved light. The illumination device 1 and the optical element package 2 constitute a backlight. Hereinafter, a surface on which light from the illumination device 1 is incident is referred to as an incident surface, a surface from which light incident from the incident surface is emitted is referred to as an emission surface, and a surface positioned between the incident surface and the emission surface is referred to as an end surface. Further, the entrance surface and the exit surface are collectively referred to as a main surface as appropriate.

  The illumination device 1 is, for example, a direct illumination device, and includes a light source 11 that emits light and a reflection plate 12 that reflects the light emitted from the light source 11 and directs the light toward the liquid crystal panel 3. Examples of the light source 11 include a cold cathode fluorescent lamp (CCFL), a hot cathode fluorescent lamp (HCFL), an organic electroluminescence (OEL), or a light emitting diode (LED). Diode) or the like can be used. The reflector 12 is provided, for example, so as to cover the lower side and the side of the one or more light sources 11 and reflects light emitted from the one or more light sources 11 to the lower side and the side to It is for turning in the direction.

  The optical element package 2 supports, for example, one or a plurality of optical elements 24 that change the characteristics of the light by subjecting the light emitted from the lighting device 1 to diffusion or condensing, and one or a plurality of optical elements. And a packaging member 22 that wraps and integrates the support 23, the one or more optical elements 24, and the support 23. In the following, the superposition of the support 23 and one or more optical elements 24 is referred to as an optical element laminate 21.

  The number and type of the optical elements 24 are not particularly limited, and can be appropriately selected according to desired characteristics of the liquid crystal display device. As the optical element 24, for example, a support and one or a plurality of functional layers, or one consisting of only one or a plurality of functional layers can be used. As the optical element 24, for example, a light diffusing element, a light condensing element, a reflective polarizer, a polarizer, or a light splitting element can be used. As the optical element, for example, a film, a sheet, or a plate can be used. The thickness of the optical element 24 is, for example, 5 to 1000 μm.

  The support 23 is, for example, a transparent plate that transmits the light emitted from the lighting device 1 or an optical plate that changes the light characteristics by performing a process such as diffusion or condensing on the light emitted from the lighting device 1. . As the optical plate, for example, a diffusion plate, a phase difference plate, a prism plate, or the like can be used. The thickness of the support body 23 is 1000-50000 micrometers, for example. The support 23 is made of, for example, a polymer material, and the transmittance is preferably 30% or more. In addition, the order of lamination | stacking with the optical element 24 and the support body 23 is selected according to the function which the optical element 24 and the support body 23 have, for example. For example, when the support 23 is a diffusing plate, the support 23 is provided on the side on which light from the lighting device 1 is incident. When the support 23 is a reflective polarizing plate, the support 23 is a liquid crystal panel. 3 is provided on the side from which light is emitted. The shapes of the entrance surface and the exit surface of the optical element 24 and the support 23 are selected according to the shape of the liquid crystal panel 3, and are, for example, rectangular shapes having different aspect ratios.

  The main surfaces of the optical element 24 and the support 23 are preferably subjected to an uneven process or contain fine particles. This is because rubbing and friction can be reduced. In addition, the optical element 24 and the support 23 may contain additives such as a light stabilizer, an ultraviolet absorber, an antistatic agent, a flame retardant, and an antioxidant, if necessary, so that an ultraviolet absorbing function and an infrared absorbing function can be obtained. A function, an electrostatic suppression function, and the like may be imparted to the optical element 24 and the support 23. Further, the optical element 24 and the support 23 are subjected to surface treatment such as anti-reflection treatment (AR treatment) or anti-glare treatment (AG treatment) so as to diffuse reflected light or reduce the reflected light itself. Also good. In addition, the surfaces of the optical element 24 and the support 23 may have a function for reflecting ultraviolet rays and infrared rays.

  The packaging member 22 is, for example, a transparent single layer or a plurality of layers of film, sheet, or bag. The packaging member 22 has, for example, a belt-like shape, and the end faces in the longitudinal direction are preferably joined on the end face of the optical element laminate 21. In the following, of the surfaces of the packaging member 22, the surface on the optical element laminate 21 side is referred to as an inner surface, and the opposite surface is referred to as an outer surface.

  The film or sheet of the packaging member 22 may be bonded in the longitudinal direction of the same direction or may be bonded in a direction crossing the longitudinal direction. These packaging members 22 may be covered with at least one layer in the same direction and / or different directions. In addition, these wrapping members 22 are continuous films or sheets, and are covered with at least two layers, and may be provided in both the same direction and / or different directions.

  When the main surface of the optical element laminate 21 has, for example, rectangular shapes with different aspect ratios, the main surface and both end surfaces on the long side are wrapped by the packaging member 22, and both end surfaces on the short side are packaged 22. Or the main surface and both end surfaces on the short side thereof are wrapped by the packaging member 22, and both end surfaces on the long side are exposed.

  The thickness of the packaging member 22 is selected to be, for example, 5 to 5000 μm. Note that the thickness of the packaging member 22 may be different between the incident surface side and the output surface side. In this case, the thickness on the incident surface side is preferably larger than the thickness on the output surface side. This is because by increasing the thickness on the incident surface side, the shape change of the support 23 and the optical element 24 due to the heat generated from the light source 11 can be suppressed. Moreover, it is preferable that the packaging member 22 has covered the main surface of the optical element laminated body 21 50% or more by area ratio. Moreover, you may make it the packaging member 22 enclose the structure as an aggregate. The packaging member 22 has, for example, uniaxial anisotropy or biaxial anisotropy. For example, when the packaging member 22 has a rectangular shape, it has uniaxial anisotropy in the longitudinal direction of the packaging member 22 with a positive or negative refractive index characteristic, or positive or negative refraction in the longitudinal direction of the packaging member 22. Biaxial anisotropy in terms of modulus.

  When the packaging member 22 has anisotropy, the optical anisotropy is preferably small, and specifically, the retardation is preferably 50 nm or less. As the packaging member 22, it is preferable to use a uniaxially stretched or biaxially stretched sheet or film. When such a sheet or film is used, the packaging member 22 can be contracted in the direction opposite to the stretching direction by applying heat, so that the adhesion between the packaging member 22 and the optical element laminate 21 is increased. Can do.

  As the material of the packaging member 22, a polymer material having heat shrinkability is preferable, and a polymer material that shrinks by applying heat from room temperature to 85 ° C. is more preferable. Examples of the heat-shrinkable polymer material include polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), and polystyrene (PS). And vinyl bond resins such as polyvinyl alcohol (PVA), polycarbonate (PC) resins, cycloolefin resins, urethane resins, vinyl chloride resins, natural rubber resins, and artificial rubber resins alone or in combination. Can be used.

  The thermal contraction rate of the packaging member 22 is preferably 0.2% or more, more preferably 5% or more, even more preferably 10% or more, and most preferably 20% or more. It is because the adhesiveness of the packaging member 22 and the optical element laminated body 21 can be improved by setting it as this numerical range. The thermal deformation temperature of the packaging member 22 is preferably 90 ° C. or higher. It is because it can suppress that the optical characteristic of the optical element package 2 falls with the heat | fever generate | occur | produced from the light source 11. FIG. The loss on drying of the material of the packaging member 22 is preferably 2% or less. The thermal expansion coefficient of the packaging member 22 is preferably smaller than the thermal expansion coefficients of the support 23 and the optical element 24 that are wrapped by the packaging member 22. This is because the adhesion between the packaging member 22 and the optical element laminate 21 can be enhanced. The refractive index of the material of the packaging member 22 (the refractive index of the packaging member 22) is preferably 1.6 or less, more preferably 1.55 or less.

  The packaging member 22 may have an optical functional layer described in paragraphs [0023], [0024], [0039], [0040], [0041], [0042], [0043], and the like.

  The packaging member 22 preferably contains one or more fillers. As the filler, for example, at least one of an organic filler and an inorganic filler can be used. As a material for the organic filler, for example, one or more selected from the group consisting of an acrylic resin, a styrene resin, fluorine, and a cavity can be used. As the inorganic filler, for example, one or more selected from the group consisting of silica, alumina, talc, titanium oxide, and barium sulfate can be used. As the shape of the filler, various shapes such as a needle shape, a spherical shape, an ellipsoidal shape, a plate shape, and a scale shape can be used. As the diameter of the filler, for example, one type or two or more types are selected.

  Further, the packaging member 22 may further contain additives such as a light stabilizer, an ultraviolet absorber, an antistatic agent, a flame retardant, and an antioxidant as necessary, so that the ultraviolet absorbing function, the infrared absorbing function, and the electrostatic A suppressing function or the like may be imparted to the packaging member 22. Further, the wrapping member 22 may be subjected to surface treatment such as anti-glare treatment (AG treatment) and anti-reflection treatment (AR treatment) so as to diffuse the reflected light or reduce the reflected light itself. Furthermore, a function of transmitting light in a specific wavelength region such as UV-A light (about 315 to 400 nm) may be added.

  A concavo-convex structure as an optical functional layer may be formed on the surface of the packaging member 22, and a structure including waviness for preventing sticking and scratch resistance may be used. For example, by adding undulation in the ridge direction to the parallel lens as the light condensing function layer, the contact of the top of the lens can be suppressed. In addition to the one surface, an optical functional layer or a structure for preventing sticking and scratching may be provided on the back surface side.

  The liquid crystal panel 3 is for displaying information by temporally and spatially modulating light supplied from the light source 11. The operation mode of the liquid crystal panel 3 is, for example, a twisted nematic (TN) mode, a vertical alignment (VA) mode, a horizontal alignment (IPS) mode, or a bent alignment (OCB: Optically). Compensated Birefringence) mode is used.

Next, with reference to FIGS. 2-4, the structural example of the optical element package 2 is demonstrated in detail.
FIG. 2 shows a first configuration example of the optical element package according to the first embodiment of the present invention. As shown in FIG. 2, the optical element package 2, for example, includes a diffusing plate 23 a that is a support, a diffusing film 24 a that is an optical element, a lens film 24 b, and a reflective polarizer 24 c. Packaging member 22 to be provided. Here, the diffusion plate 23a, the diffusion film 24a, the lens film 24b, and the reflective polarizer 24c constitute the optical element laminate 21. The main surface of the optical element laminate 21 has, for example, rectangular shapes with different aspect ratios. The main surface of the optical element laminate 21 and both end faces on the long side thereof are wrapped by a band-shaped packaging member 22, and both end faces on the short side of the optical element laminate 21 are exposed. Both ends in the longitudinal direction of the band-shaped packaging member 22 are joined together at, for example, the end surface on the long side of the optical element laminate 21.

  The diffusing plate 23a is provided above the one or more light sources and diffuses the light emitted from the one or more light sources 11 and the reflected light from the reflecting plate 12 to make the luminance uniform. As the diffusion plate 23a, for example, one having a concavo-convex structure for diffusing light on its surface, one containing fine particles having a refractive index different from the main constituent material of the diffusion plate 23a, and one containing hollow fine particles Alternatively, a combination of two or more of the above concavo-convex structure, fine particles and hollow fine particles can be used. As the fine particles, for example, at least one of an organic filler and an inorganic filler can be used. Further, the concavo-convex structure, fine particles and hollow fine particles are provided, for example, on the exit surface of the diffusion plate 23a. The light transmittance of the diffusion plate 23a is, for example, 30% or more.

  The diffusion film 24a is provided on the diffusion plate 23a, and diffuses the light diffused by the diffusion plate 23a. Examples of the diffusion film 24a include those having a concavo-convex structure on the surface for diffusing light, those containing fine particles having a refractive index different from the main constituent material of the diffusion film 24a, and those containing hollow fine particles Alternatively, a combination of two or more of the concavo-convex structure, fine particles and hollow fine particles can be used. As the fine particles, for example, at least one of an organic filler and an inorganic filler can be used. Moreover, the said uneven structure body, microparticles | fine-particles, and hollow microparticles | fine-particles are provided in the output surface of the diffusion film 24a, for example.

  The lens film 24b is provided on the diffusion film 24a, and is for improving the directivity of irradiated light. For example, a fine prism lens array is provided on the exit surface of the lens film 24b, and the cross section of the prism lens in the array direction has, for example, a substantially triangular shape, and it is preferable that the apex is rounded. This is because the cut-off can be improved and a wide viewing angle can be realized.

  The diffusion film 24a and the lens film 24b are made of, for example, a polymer material, and the refractive index thereof is, for example, 1.5 to 1.6. As a material constituting the optical element 24 or the optical functional layer provided thereon, for example, an ionizing photosensitive resin that is cured by light or an electron beam, or a thermosetting resin that is cured by heat is preferable. Resins are most preferred.

  The reflective polarizer 24c is provided on the lens film 24b and allows only one of the orthogonally polarized components to pass through and reflects the other of the light whose directionality is enhanced by the lens film 24b. The reflective polarizer 24c is a laminated body such as an organic multilayer film, an inorganic multilayer film, or a liquid crystal multilayer film. Further, the reflective polarizer 24c may contain a different refractive index body. Further, a diffusion lens may be provided in the reflective polarizer 24c.

Here, with reference to FIGS. 3-4, the example of the junction part of the packaging member 22 is demonstrated.
FIG. 3 shows a first example of the joint portion of the packaging member. In the first example, as shown in FIG. 3, the inner surface and the outer surface of the end portion of the packaging member are joined on the end surface of the optical element laminate 21 so as to overlap each other. That is, the end portion of the packaging member 22 is joined so as to follow the end surface of the optical element laminate 21.

  FIG. 4 shows a second example of the joint portion of the packaging member. In the second example, as shown in FIG. 4, the end surfaces of the optical element laminate 21 are joined so that the inner surfaces of the end portions of the packaging member are overlapped with each other. That is, the end of the packaging member 22 is joined so as to rise from the end surface of the optical element laminate 21.

  FIG. 5 shows a second configuration example of the optical element package according to the first embodiment of the present invention. As shown in FIG. 5, the entrance surface and the exit surface of the optical element laminate 21 and both end faces on the short side thereof are wrapped by a band-shaped packaging member 22, and both end faces on the long side of the optical element laminate 21. Is exposed. The end portions in the longitudinal direction of the band-shaped packaging member 22 are joined at the end surface on the short side of the optical element laminate 21.

  FIG. 6 shows a third configuration example of the optical element package according to the first embodiment of the present invention. As shown in FIG. 6, the central portion of the optical element laminate 21 and the vicinity thereof are covered with a band-shaped packaging member 22, and both end portions on the short side of the optical element laminate 21 are exposed. Ends in the longitudinal direction of the band-shaped packaging member 22 are joined to each other at the end face on the long side of the optical element laminate 21.

(1-3) Method for Manufacturing Optical Element Package Next, an example of a method for manufacturing the optical element package 2 having the above-described configuration will be described. First, as shown in FIG. 7A, the one or more optical elements 24 and the support 23 that are overlapped are placed on, for example, a belt-shaped packaging member 22. Next, as indicated by an arrow a in FIG. 7A, for example, the longitudinal ends of the belt-shaped packaging member 22 are lifted, and the one or more optical elements 24 and the support 23 that are overlapped are packaged. Wrapping with 22 Next, as illustrated in FIG. 7B, for example, the longitudinal ends of the packaging member 22 are joined to each other by one or more optical elements 24 or end faces of the support 23. As a joining method, for example, an adhesive or adhesion by welding is exemplified. Examples of the bonding method using an adhesive include a hot-melt bonding method, a thermosetting bonding method, a pressure-sensitive (adhesion) bonding method, an energy ray curable bonding method, a hydration bonding method, and a moisture absorption / rehumidification bonding method. Etc. Examples of the adhesion method by welding include thermal welding, ultrasonic welding, and laser welding. Then, you may make it heat-shrink the packaging member 22 by applying heat to the packaging member 22 as needed. Thus, the target optical element package 2 is obtained.

(2) Second Embodiment The second embodiment includes optical elements 24 having two or more sizes in the first embodiment. Of the two or more types of optical elements 24, the smallest optical element 24 is disposed inside the optical element laminate 21, and the largest optical element 24 is the incident surface side or the exit surface side of the optical element laminate 21. It is arranged.

  FIG. 8 shows a structural example of an optical element laminate according to the second embodiment of the present invention. As shown in FIG. 8, a diffusion film 24a, a lens film 24b, and a reflective polarizer 24c are stacked in this order on a diffusion plate 23a that is a support. And this optical element laminated body 21 is wrapped with the strip | belt-shaped packaging member 22. FIG. Of the optical elements 24 constituting the optical element laminate 21, the smallest diffusion film 24 is disposed inside the optical element laminate 21, and a reflective polarizer 24 c that is one of the largest optical elements 24 is provided. It is disposed on the light exit surface side of the optical element laminate 21.

(3) Third Embodiment In the third embodiment, the end surface of the optical element laminate 21 is covered with the packaging member 22 so that the optical element laminate 21 is integrated, and the main surface of the optical element laminate 21 is Exposed. Moreover, you may make it further wrap the peripheral part of the main surface of the optical element laminated body 21 with the packaging member 22 as needed.

  FIG. 9 shows an example of the configuration of the optical element package according to the third embodiment of the present invention. As shown in FIG. 9, all end faces of the optical element laminate 21 are wrapped by the packaging member 22, and the incident surface and the exit surface of the optical element laminate 21 are exposed.

  In the third embodiment of the present invention, since the exit surface of the optical element package 2 is exposed, the light transmitted through the support 23 or the optical element 24 disposed on the exit side of the optical element package 2 is exposed. The liquid crystal panel 3 can be made incident without changing the retardation. For example, the light deflected and separated by the reflective polarizer 24c provided on the output side can be incident on the deflector of the liquid crystal panel 3 without changing the retardation. Therefore, a decrease in luminance can be suppressed.

(4) Fourth Embodiment In the fourth embodiment, in the first embodiment, two or more packaging members 22 are provided, and these packaging members 22 are covered on the optical element laminate 21 from different directions. The optical element laminate 21 is wrapped. The materials and shapes of the two or more packaging members 22 may be different from each other.

  FIG. 10 shows one configuration of the optical element package according to the fourth embodiment of the present invention. As shown in FIG. 10, the main surface of the optical element laminate 21 has, for example, rectangular shapes with different aspect ratios. The end face of the optical element laminate 21 is wrapped by the first packaging member 31a. The main surface of the optical element laminate 21 and the end surface on the short side thereof are wrapped by the second packaging member 31b. Therefore, all the surfaces of the optical element laminate 21 are wrapped by the first packaging member 31a and the second packaging member 31b.

(5) Fifth Embodiment In the fifth embodiment, the optical element laminate is bundled and integrated using two or more packaging members 22 in the first embodiment. The packaging member 22 has, for example, an elongated belt-like shape, and wraps around the end of the optical element laminate 21 and integrates the optical element laminate 21.

  FIG. 11 shows an example of the structure of an optical element package according to the fifth embodiment of the present invention. As shown in FIG. 11, the main surface of the optical element laminate 21 has, for example, rectangular shapes with different aspect ratios. The first packaging member 32a and the second packaging member 32b each having an elongated strip shape wrap around both ends of the optical element stack 21, and the optical element stack 21 is integrated.

(6) Sixth Embodiment This sixth embodiment is provided with two or more grooves or holes for passing two or more packaging members 22 in the fifth embodiment. The groove or hole is preferably provided in the vicinity of the end of the optical element laminate 21. This is because the deterioration of the optical characteristics due to the provision of the grooves or holes can be suppressed.

  FIG. 12 shows a structural example of an optical element laminate according to the sixth embodiment of the present invention. As shown in FIG. 12, the main surface of the optical element laminate 21 has, for example, rectangular shapes with different aspect ratios. Grooves 21 a and 21 a are provided in the vicinity of both ends of the long side of the optical element laminate 21. The first wrapping member 32a and the second wrapping member 32b each having an elongated strip shape are integrated with the optical element laminate 21 by covering both ends of the optical element laminate 21 so as to pass through the grooves 21a and 21a, respectively. Yes.

  In the sixth embodiment, since the optical element laminate 21 is provided with a groove or hole for allowing the packaging member 22 to pass therethrough, it is possible to prevent the packaging member 22 from being displaced during manufacture or transportation. Therefore, the quality and productivity of the liquid crystal display device can be improved.

(7) Seventh Embodiment In the seventh embodiment, the optical element laminate 21 is sealed by the packaging member 22 in the first embodiment. The inside of the packaging member 22 is, for example, normal pressure, low pressure, or vacuum. The packaging member 22 includes, for example, one or a plurality of packaging members 22, and end portions of the packaging member 22 are joined. This bonding portion is preferably located on the end face of the optical element laminate 21. This is because the deterioration of the optical characteristics of the optical element package 2 due to the formation of the joint portion can be avoided.

  FIG. 13 shows a structural example of an optical element laminate according to the seventh embodiment of the present invention. As shown in FIG. 13, the main surface of the optical element laminate 21 has, for example, rectangular shapes with different aspect ratios, and all six directions thereof are wrapped by the packaging member 22. The packaging member 22 includes, for example, a first packaging member and a second packaging member, and the first packaging member and the second packaging member respectively cover, for example, the entrance surface and the exit surface of the optical element laminate 21. It has become. The 1st packaging member and the 2nd packaging member are joined, for example in those peripheral parts. The first packaging member and the second packaging member may have different physical properties, for example.

  Next, an example of a method for manufacturing the optical element package 2 having the above-described configuration will be described. First, one or more optical elements 24 are superposed on the support 23. Next, the overlapped optical element 24 and support 23 are sandwiched between the first packaging member and the second packaging member. Next, the peripheral portions of the first packaging member and the second packaging member are joined. Thus, the target optical element package 2 is obtained.

(8) Eighth Embodiment In the eighth embodiment, an opening is provided on at least one of the entrance surface and the exit surface of the packaging member 22 in the seventh embodiment.

  FIG. 14 shows a configuration example of an optical element package according to the eighth embodiment of the present invention. As shown in FIG. 14, for example, an opening 22 b having substantially the same shape as the incident surface of the liquid crystal panel 3 is provided on the emission surface of the packaging member 22. Further, for example, a reflective polarizer 24 c is provided on the light exit surface side of the optical element laminate 21.

  In the eighth embodiment of the present invention, since the exit surface of the optical element laminate 21 is exposed, the light transmitted through the support 23 or the optical element 24 disposed on the exit side of the optical element package 2 is obtained. The liquid crystal panel 3 can be made incident without changing the retardation. For example, the light deflected and separated by the reflective polarizer 24c provided on the output side can be incident on the deflector of the liquid crystal panel 3 without changing the retardation. Therefore, a decrease in luminance can be suppressed.

(9) Ninth Embodiment In the ninth embodiment, one or more openings are provided in the packaging member 22 in the seventh embodiment. For example, the opening is provided in at least one of the corner and the side of the optical element laminate 21.

  FIG. 15 shows a first configuration example of an optical element package according to the ninth embodiment of the present invention. In the first configuration example, as shown in FIG. 15, the packaging member 22 has openings 22 c at positions corresponding to the corners 21 a of the optical element laminate 21, for example. Therefore, the corner 21 a of the optical element laminate 21 is exposed from the packaging member 22.

  FIG. 16 shows a second configuration example of the optical element package according to the ninth embodiment of the present invention. In this second configuration example, as shown in FIG. 16, the packaging member 22 has an opening 22 c at a position corresponding to the side of the optical element laminate 21, for example. The opening 22c has a slit shape, for example. Therefore, the side portion of the optical element laminate 21 is exposed from the packaging member 22.

  In the ninth embodiment, since an opening is provided in the packaging member 22 and the side and corners of the optical element laminate 21 are exposed from the opening, the optical element can be used at the time of manufacturing or transporting the optical element package 2. It can suppress that the packaging member 22 is damaged by the side part and corner | angular part of the laminated body 21. FIG.

(10) Tenth Embodiment In the tenth embodiment, in the first embodiment, the packaging member 22, and the support 23 and at least one of the one or more optical elements 24 wrapped by the packaging member 22 are used. Are joined. As a joining method, for example, an adhesive or adhesion by welding is exemplified. Examples of the bonding method using an adhesive include a hot-melt bonding method, a thermosetting bonding method, a pressure-sensitive (adhesion) bonding method, an energy ray curable bonding method, a hydration bonding method, and a moisture absorption / rehumidification bonding method. Etc. Examples of the adhesion method by welding include thermal welding, ultrasonic welding, and laser welding.

  FIG. 17 shows a first configuration example of the optical element package according to the tenth embodiment of the present invention. In the first configuration example, the joint portion 25 is provided on the incident surface side of the optical element package 2. The joint portion 25 is formed by joining the inner surface of the packaging member 22 and a part or all of the incident surface of the diffusion plate 23a as a support. The packaging member 22 and the diffusion plate 23a are integrated by the joint portion 25.

  FIG. 18 shows a second configuration example of the optical element package according to the tenth embodiment of the present invention. In the second configuration example, the joint portion 25 is provided on the end surface of the optical element package 2. The joining portion 25 is formed by joining the inner surface of the packaging member 22 and a part or all of the end face of the diffusion plate 23a as a support.

(11) Eleventh Embodiment In the eleventh embodiment, a convex surface or a concave surface is provided on at least one of the support body 23 and the optical element 24 in the first embodiment. The convex surface and the concave surface are preferably provided on the support 23 and the optical element 24 having the largest thickness. For example, the convex surface and the concave surface are provided on the support 23 such as a transparent plate or a diffusion plate. The convex surface and the concave surface of the support 23 and the optical element 24 may be provided, for example, on at least one of the incident surface and the output surface, and the convex surface and the concave surface may be combined. The convex surface and the concave surface are, for example, convex and concave curved surfaces each having a curvature in at least one of the vertical direction (vertical direction) and the horizontal direction (horizontal direction). Examples of such curved surfaces include paraboloids, cylindrical surfaces, hyperboloids, ellipsoids, quaternary surfaces, and free-form surfaces.

  FIG. 19 shows a first configuration example of the optical element package according to the eleventh embodiment of the present invention. In the first configuration example, as shown in FIG. 19, the incident surface of the diffusion plate 23a as a support is, for example, a convex curved surface. The convex curved surface is, for example, a cylindrical surface having a curvature in the vertical direction (vertical direction).

  FIG. 20 shows a second configuration example of the optical element package according to the eleventh embodiment of the present invention. In the second configuration example, as shown in FIG. 20, the incident surface of the diffusion plate 23a as a support is, for example, a concave curved surface. The concave curved surface is, for example, a cylindrical surface having a curvature in the vertical direction (vertical direction).

(12) Twelfth Embodiment In the twelfth embodiment, in the first embodiment, at least one of the support 23 and the optical element 24 is warped. The warp is preferably provided on the support 23 and the optical element 24 having the largest thickness. For example, the warp is provided on the support 23 such as a transparent plate or a diffusion plate. The warp of the support 23 and the optical element 24 is provided so that, for example, the incident surface side or the output surface side protrudes.

  FIG. 21 shows a configuration example of an optical element package according to the twelfth embodiment of the present invention. In this configuration example, as shown in FIG. 21, the diffusing plate 23a as a support is provided with a warp. For example, the warp is provided so that the exit surface side of the diffusion plate 23a protrudes. The entrance surface and the exit surface of the diffusion plate 23a have, for example, a predetermined curvature in the longitudinal direction (vertical direction) and an infinite curvature in the lateral direction (horizontal direction).

(13) Thirteenth Embodiment In the thirteenth embodiment, in the first embodiment, at least one corner of the support 23 and the optical element 24 is formed in a curved surface shape, a slope shape, or a composite shape combining them. It is a thing. That is, at least one end face of the support 23 and the optical element 24 is formed into a curved shape, a polygonal shape, or a composite shape combining them. The shape is preferably provided on the support 23 and the optical element 24 having the largest thickness. For example, the shape is provided on the support 23 such as a transparent plate or a diffusion plate. Moreover, the said shape is provided in part or all among the boundary parts of a main surface and an end surface, for example, Preferably it is provided in the boundary part which contacts the packaging member 22. FIG. The curved surface provided at the boundary portion is, for example, an R surface, and the inclined surface provided at the boundary portion is, for example, a C surface.

  FIG. 22 shows a configuration example of an optical element package according to the thirteenth embodiment of the present invention. In this configuration example, as shown in FIG. 22, of the boundary portions of each surface of the diffusion plate 23 a that is a support body, a boundary surface that contacts the packaging member 22 is provided with a slope such as a C surface, for example. Yes. That is, the cross section in the thickness direction of the end portion of the diffusion plate 23a has a trapezoidal shape, for example.

(14) Fourteenth Embodiment In the fourteenth embodiment, at least one end face of the support 23 and the optical element 24 is tapered in the first embodiment. The taper is preferably provided on the support 23 and one or more optical elements 24 that are disposed on the incident surface side and / or on the output surface side. Further, the taper is provided, for example, on a part or the whole of the end surface between the entrance surface and the exit surface, and is preferably provided on the end surface covered with the packaging member 22.

  FIG. 23 shows a structural example of an optical element package according to a fourteenth embodiment of the present invention. In this configuration example, as shown in FIG. 23, a taper is provided on an end surface of the diffusion plate 23a, which is a support, disposed on the incident surface side. This taper is provided on the end surface of the diffusing plate 23 a that is covered with the packaging member 22.

(15) Fifteenth Embodiment In the fifteenth embodiment, in the first embodiment, the support 23 includes a housing portion 23b that houses one or a plurality of optical elements 24. The accommodating portion 23b is provided on at least one of the incident surface and the emitting surface of the support 23. A frame portion 23c is provided on a part or all of the peripheral portion of the incident surface or the emission surface of the support 23, and a region surrounded by the frame portion 23c serves as the accommodating portion 23b. The frame portion 23c only needs to be capable of defining the position of the optical element 24, and may be a protrusion in which the peripheral portion of the incident surface or the emission surface partially protrudes.

  FIG. 24 shows a structural example of an optical element package according to the fifteenth embodiment of the present invention. As shown in FIG. 24, the support body 23 accommodates the optical element 24 on both the incident surface and the exit surface of the support body 23, for example. Specifically, for example, the support body 23 accommodates the diffusion film 24a in the accommodation portion 23b on the incident surface and accommodates the lens film 24b in the accommodation portion 23b on the emission surface. The entrance surface and the exit surface of the support 23 have, for example, rectangular shapes with different aspect ratios, and a frame portion 23c is provided along the short side or the long side of the entrance surface and the exit surface facing each other. The position of the optical element 24 is defined by the frame portion 23c.

(16) Sixteenth Embodiment In the sixteenth embodiment, in the fifteenth embodiment, a holding portion that holds the peripheral edge of the optical element 24 housed in the housing portion 23b is further provided. This holding portion is provided on at least one of the incident surface and the emission surface of the support 23.

  FIG. 25 shows a configuration example of an optical element package according to the sixteenth embodiment of the present invention. As shown in FIG. 25, the frame portion 23c on the emission surface side is provided with a holding portion 23d extending from the tip thereof in parallel to the emission surface and extending inward of the emission surface. The holding portion 23d holds the peripheral edge portion of the optical element 24 accommodated in the exit-side accommodation portion 23b.

(17) Seventeenth Embodiment In the seventeenth embodiment, a part or all of one or a plurality of optical elements 24 is provided outside the optical element package 2 in the first embodiment. is there. The optical element 24 provided outside the optical element package 2 is disposed, for example, between the optical element package 2 and the liquid crystal panel 3 and / or between the optical element package 2 and the lighting device 1. Moreover, you may make it join the optical element 24 provided in the outer side of the optical element package 2 with the adhesive agent etc. to the output surface or incident surface of the optical element package 2, for example. As the optical element 24 provided outside the optical element package 2, for example, a light diffusing element, a light condensing element, a reflective polarizer, a polarizer, or a light splitting element can be used.

  FIG. 26 shows a structural example of a backlight according to the seventeenth embodiment of the present invention. As shown in FIG. 26, for example, an optical element package 2 and a reflective polarizer 24c, which is an optical element, are provided in this order from the illumination device 1 toward the liquid crystal panel 3. The optical element package 2 is formed by packaging a diffusion plate 23a, a diffusion film 24a, and a lens film 24b into a packaging member 22 and integrating them.

  In the seventeenth embodiment, since the optical element 24 such as a reflective polarizer is provided outside the optical element package 2, the retardation of light emitted from the optical element 24 such as a reflective polarizer is changed. Without being incident on the liquid crystal panel 3.

(18) Eighteenth Embodiment In the eighteenth embodiment, in the first embodiment, a structure and an optical functional layer are provided on at least one of the inner surface and the outer surface of the packaging member 22. This optical functional layer is provided, for example, on at least one of the incident surface side and the emission surface side of the optical element package 2. The structure and the optical functional layer are for improving the characteristics of light incident from the illumination device 1. As the structure, various lenses such as a cylindrical lens, a prism lens, or a fly-eye lens can be used. Further, a wobble may be added to a structure such as a cylindrical lens or a prism lens. This structure is formed by, for example, a melt extrusion method or a thermal transfer method. As the optical functional layer, for example, an ultraviolet cut functional layer (UV cut functional layer) or an infrared cut functional layer (IR cut functional layer) can be used.

  FIG. 27 shows a configuration example of a backlight according to the eighteenth embodiment of the present invention. As shown in FIG. 27, for example, a diffusing plate 23a, a diffusing film 24a, a lens film 24b, and a reflective polarizer 24c are provided in this order from the illumination device 1 toward the liquid crystal panel 3. Further, the diffusion plate 23a is wrapped by the packaging member 22, and a structure 26 having a non-uniformity canceling function or the like is provided on a portion of the inner surface of the packaging member on the incident side.

(19) Nineteenth Embodiment In the nineteenth embodiment, light emitted from the end surface of the optical element package 2 is applied to a part or all of the end surface of the optical element package 2 in the first embodiment. A reflection part for reflection is provided. The reflecting portion is provided at, for example, at least one position on the inner and outer surfaces of the packaging member 22, between the packaging member 22 and the optical element stack 21, and on the end surface of the optical element stack 21. Examples of the reflective portion include inorganic multilayer reflective films such as metal reflective films, oxide metal films and metal multilayer films, organic multilayer reflective films such as polymer multilayer films, polymer resin layers containing fillers, and pores. At least one of a polymer resin layer and a structural reflector can be used. Specifically, for example, a white PET film containing a filler such as titanium oxide and bubbles can be used. As the structure reflector, for example, a substantially prism-shaped structure can be used.

  FIG. 28 shows a first structural example of the optical element package according to the nineteenth embodiment of the present invention. In the first configuration example, as shown in FIG. 28, a reflection film such as a white PET film is disposed on the end face of the optical element laminate 21. This reflective film is bonded to the end face of the optical element laminate 21 with an adhesive or the like, for example.

  FIG. 29 shows a second configuration example of the optical element package according to the nineteenth embodiment of the present invention. In the second configuration example, as shown in FIG. 29, the end face of the optical element laminate 21 is surrounded by a reflection band 28. The reflection band 28 is, for example, a belt-like reflection film, and ends in the longitudinal direction are joined to each other. As a joining method, for example, the joining method of the packaging member 22 in the first embodiment can be used. As the base material of the reflection band 27, for example, a material having heat shrinkability can be used.

  In the nineteenth embodiment, since the reflecting portion is provided on the end surface of the optical element package 2, the light from the illumination device 1 can be reflected by the end surface of the optical element package 2. Therefore, the light from the lighting device 1 can be used effectively.

(20) 20th Embodiment The liquid crystal display device according to the 20th embodiment uses an edge type illumination device as the illumination device 1. This illuminating device spreads the light from the light source 11 disposed on one end side of the liquid crystal panel 3 over the entire surface of the liquid crystal panel via the light guide plate.

  FIG. 30 shows a configuration example of a liquid crystal display device according to the twentieth embodiment of the present invention. As shown in FIG. 30, the liquid crystal display device includes, for example, an optical element package 2 that emits light and a liquid crystal panel 3 that displays an image based on the light emitted from the optical element package 2. As the liquid crystal panel 3, for example, the same one as in the first embodiment can be used.

  The optical element package 2 includes a light guide plate 13 as a support, a light source 11 provided at one end of the light guide plate 13, and a lamp reflector 14 provided at one end of the light guide plate 13 so as to enclose the light source 11. The reflection sheet 15 provided behind the light guide plate 13, the optical element laminate 21 provided on the light guide plate 13, and at least the reflection sheet 15, the light guide plate 13, and the optical element laminate 21 are wrapped around these members. And a packaging member 22 for integrating.

  The optical element laminate 21 is configured, for example, by superposing one or more optical elements on the light guide plate 13. Specifically, for example, the optical element laminate 21 is configured by superimposing a diffusion sheet, a prism sheet, a prism sheet, and a diffusion sheet in this order on a light guide plate 13 that is a support. As the packaging member 22, for example, the same one as in the first embodiment described above can be used.

  As mentioned above, although embodiment of this invention was described concretely, this invention is not limited to the above-mentioned embodiment, The various deformation | transformation based on the technical idea of this invention is possible.

  For example, the numerical values given in the above embodiment are merely examples, and different numerical values may be used as necessary.

  The configurations of the above-described embodiments can be combined with each other without departing from the gist of the present invention.

  Further, in the above-described embodiment, a part of the optical elements or the optical element and the support may be joined so as not to impair the optical function, and the optical element is provided at the end from the viewpoint of suppressing the deterioration of the display function. It is preferable.

  Moreover, in the above-mentioned embodiment, the optical element packaging body may further be provided with a non-uniformity eliminating film. This unevenness eliminating film is provided, for example, between the incident surface of the support and the packaging member.

  Moreover, although the case where a film-like or sheet-like one is used as the packaging member has been described as an example in the above-described embodiment, a case having a certain degree of rigidity may be used as the packaging member.

It is the schematic which shows one structural example of the liquid crystal display device by 1st Embodiment of this invention. It is a perspective view which shows the 1st structural example of the optical element packaging body by 1st Embodiment of this invention. It is sectional drawing which shows the 1st example of the junction part of the packaging member in 1st Embodiment of this invention. It is sectional drawing which shows the 2nd example of the junction part of the packaging member in 1st Embodiment of this invention. It is a perspective view which shows the 2nd structural example of the optical element packaging body by 1st Embodiment of this invention. It is a perspective view which shows the 3rd structural example of the optical element packaging body by 1st Embodiment of this invention. It is a perspective view for demonstrating an example of the manufacturing method of the optical element packaging body by 1st Embodiment of this invention. It is a perspective view which shows one structural example of the optical element laminated body by 2nd Embodiment of this invention. It is a perspective view which shows one structural example of the optical element package by the 3rd Embodiment of this invention. It is a perspective view which shows one structure of the optical element packaging body by 4th Embodiment of this invention. It is a perspective view which shows the example of 1 structure of the optical element package by the 5th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element laminated body by 6th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element laminated body by 7th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element packaging body by 8th Embodiment of this invention. It is a perspective view which shows the 1st structural example of the optical element packaging body by 9th Embodiment of this invention. It is a perspective view which shows the 2nd structural example of the optical element packaging body by 9th Embodiment of this invention. It is a perspective view which shows the 1st structural example of the optical element packaging body by 10th Embodiment of this invention. It is a perspective view which shows the 2nd structural example of the optical element packaging body by 10th Embodiment of this invention. It is a perspective view which shows the 1st structural example of the optical element packaging body by 11th Embodiment of this invention. It is a perspective view which shows the 2nd structural example of the optical element packaging body by 11th Embodiment of this invention. It is a perspective view which shows the example of 1 structure of the optical element packaging body by 12th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element packaging body by 13th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element packaging body by 14th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element packaging body by 15th Embodiment of this invention. It is a perspective view which shows one structural example of the optical element packaging body by 16th Embodiment of this invention. It is a perspective view which shows one structural example of the backlight by 17th Embodiment of this invention. It is a perspective view which shows one structural example of the backlight by 18th Embodiment of this invention. It is a perspective view which shows the 1st structural example of the optical element packaging body by 19th Embodiment of this invention. It is a perspective view which shows the 2nd structural example of the optical element packaging body by 19th Embodiment of this invention. It is the schematic which shows one structural example of the liquid crystal display device by 20th Embodiment of this invention. It is the schematic which shows the structure of the conventional liquid crystal display device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Optical element package 3 Liquid crystal panel 11 Light source 12 Reflector 13 Light guide plate 14 Lamp reflector 15 Reflective sheet 21 Optical element laminated body 22 Packaging member 23 Support body 24 Optical element 21a Groove 21b Corner | angular part 22a Joint part 22b, 22c Opening 23a Diffusion plate 23b Housing part 23c Frame part 23d Holding part 24a Diffusion film 24b Lens film 24c Reflective polarizer 25 Bonding part 26 Structure 27 Reflecting film 28 Reflecting band 31a, 32a First packaging member 31b, 32b Second Packaging material

Claims (11)

One or more optical elements;
A support that supports the one or more optical elements;
A packaging member that wraps the one or more optical elements and the support;
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the first surface toward the liquid crystal panel;
At least one of the entrance surface and the exit surface has a concave shape or a convex shape.   The optical element package according to claim 1, wherein the support is provided with a warp.   2. The optical element package according to claim 1, wherein an end surface of the support is tapered.   The optical element package according to claim 1, wherein the support is chamfered.   An optical element package comprising an accommodating portion for accommodating the optical element on at least one of the incident surface and the emitting surface. The support is
6. The optical element package according to claim 5, further comprising a holding portion for holding the optical element at a peripheral portion of at least one of the entrance surface and the exit surface.   The optical element package according to claim 1, wherein the support is a plate having a diffusing function, a translucent function, a light condensing function, a reflective polarizer function, or a polarizer function. A light source that emits light;
An optical element package that improves the characteristics of light emitted from the light source and emits light to the liquid crystal panel;
The optical element package is
One or more optical elements;
A support that supports the one or more optical elements;
A packaging member that wraps the one or more optical elements and the support;
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the first surface toward the liquid crystal panel;
At least one of the entrance surface and the exit surface has a concave shape or a convex shape. A light source that emits light;
An optical element package for improving the characteristics of light emitted from the light source;
A liquid crystal panel for displaying an image based on the light whose characteristics are improved by the optical element package,
The optical element package is
One or more optical elements;
A support that supports the one or more optical elements;
A packaging member that wraps the one or more optical elements and the support;
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the entrance surface toward the liquid crystal panel;
A liquid crystal display device, wherein at least one of the entrance surface and the exit surface is concave or convex. A light source that emits light;
An optical element package that improves the characteristics of light emitted from the light source and emits light to the liquid crystal panel;
The optical element package is
One or more optical elements;
A support that supports the one or more optical elements;
A packaging member that wraps the one or more optical elements and the support;
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the entrance surface toward the liquid crystal panel;
A backlight comprising the optical element on the emission surface side as a support. A light source that emits light;
An optical element package for improving the characteristics of light emitted from the light source;
A liquid crystal panel for displaying an image based on the light whose characteristics are improved by the optical element package,
The optical element package is
One or more optical elements;
A support that supports the one or more optical elements;
A packaging member that wraps the one or more optical elements and the support;
The support is
An incident surface on which light from the light source is incident;
An exit surface that emits light incident from the entrance surface toward the liquid crystal panel;
A liquid crystal display device characterized in that the optical element on the exit surface side is a support.

Images