TW201030284A - Light source device and liquid cristal display device - Google Patents

Abstract

Light from a light source (2a) enters the inside of a light guide plate (3) through an incident angle adjusting surface (8a) and exits from a sectional region (7a) through an adjusting section (6a) provided on a reflecting surface (6). Light from a light source (2b) enters the inside of the light guide plate (3) through an incident angle adjusting surface (8b) and exits from a sectional region (7b) through an adjusting section (6b) provided on the reflecting surface (6). Light from a light source (2c) enters the inside of the light guide plate (3) through an incident angle adjusting surface (8c) and exits from a sectional region (7c) through an adjusting section (6c) provided on the reflecting surface (6). The brightness of the sectional regions (7a, 7b, 7c) can be optionally changed and regulated independent of each other by controlling the emission of light from the light sources (2a, 2b, 2c).

Description

[Technical Field] The present invention relates to a light source device for illuminating an object to be illuminated and a liquid crystal display device having the same. [Prior Art] In a liquid crystal display device, a technique called local dimming has been developed in order to improve effective contrast or dynamic tracking while reducing power consumption. This area control technology adjusts the brightness of the backlight to match the surrounding shell, and dynamically adjusts the brightness by controlling the backlight with location/time control. A conventional technique for such a region control or the like is a unit in which each of the plurality of light-emitting regions is divided into a plurality of regions, and a unit composed of a light guide plate and a led light disposed on a side surface of the light guide plate is disposed. Then, each unit is led to be lit and extinguished or the amount of illumination is controlled. (Examples), for example, refer to Patent Document 1 (Japanese Laid-Open Patent Publication No. 2007-293339, which is assigned to US Pat. No. 2007-2007871 A1), and Patent Document 2 (Japanese Patent Publication No. 2008-21420, corresponding to US Pat. No. US20080 0 7950 A1). Each unit is equipped with a UD, so there will be LEDs at the boundary between the unit and the unit. That is to say, there will be LEDs in the field of illumination, and the LED itself or the wiring for supplying the LED power supply will become an obstacle to uniform illumination. In the case where there is a light leakage or the like in the boundary portion between the cells, high optical performance is achieved, and in order to suppress such a situation, special design and cost are required. In addition, the more parts of the field, the more steps or cost increases in manufacturing 201030284. In view of the above problems, the present invention has been made in an effort to provide a light source device capable of reducing the tearing step or cost while achieving good optical performance, and a liquid crystal display device i including the light source device. According to a first aspect of the present invention, a light source device includes a plurality of light sources and a light guide for guiding light from the light source, wherein the light guide body includes: a human emitting portion' that causes light from the light source The human light guides the light guide body to guide the light incident from the incident portion to the inside and emit it. The light guide body includes a reflecting surface that reflects light transmitted through the body of the light guiding body, and an emitting surface faces the reflection to emit light reflected by the reflecting surface. The exit surface includes a plurality of partial regions that are different in position from each other. The plurality of light sources are classified into a plurality of groups corresponding to the plurality of partial fields. The light source is further provided with an emission position control structure for controlling the emission position of the light from each of the group light sources so as to be emitted from the above-mentioned partial body of the corresponding group to the outside of the light guide body. The above-described emission position control structure may be any one or more element structures of the light source device, and specifically may be a structure of one or a plurality of portions of the light guide. For example, 'may be a combination of a configuration of one or more portions of the above-described light guide body and a configuration of other elements such as a support substrate supporting the above-described light source. According to a second aspect of the present invention, there is provided a light source device comprising a plurality of light sources and a light guide for guiding light from the light source, wherein the guide 201030284

The light body includes a human emitting portion that emits light from the light source, and the light guiding body guides light incident from the incident portion to the inside and emits the light. The light guide body includes a reflecting surface that reflects light transmitted in the body of the light guiding body, and an emitting surface that faces the reflection and emits light reflected by the reflecting surface. The exit surface includes a plurality of partial regions that are different in position from each other. The plurality of light sources are classified into a plurality of groups corresponding to the plurality of partial fields. The light source is further provided with an emission position control structure, and controls an emission position from the light constituting each group of money, and emits the outside of the light guide body from the above-mentioned county area corresponding to the group. The emission position control structure includes a human incidence direction control unit that controls light incident from the light source and enters the money guide body through the incident β with respect to an incident direction in a thickness direction of the light guide body to be different from each other. The plurality of types of adjustment units are disposed on at least one of the reflection surface and the emission surface to guide the corresponding light to each of the partial fields. In the light source device according to the second aspect of the invention, the adjustment unit can be disposed in order along the i-th direction that faces the distal end of the incident portion, and has an inclined surface whose inclination angles are set to be different from each other. The second incident portion of the present invention is formed as far as possible. In the light source-tracking device according to the second aspect of the present invention, the light source is mounted on the light source φ, μ, +, and c, and the reflecting surface can be separated from the surface of the emitting surface. The angle of inclination of the inclined surface is sufficient to be close to the above-mentioned incident Qiu. The ends are sequentially (continuously or in stages) increasing toward the distal end. In the optical retrospective device according to the second aspect of the present invention, the adjustment unit can be formed by a row 5, 201030284, and the row is a longitudinal direction in a second direction orthogonal to the j-th direction, and has an arrangement. a plurality of the inclined surfaces in the first direction. In the light source device according to the second aspect of the present invention, the incident direction control unit includes a support portion that supports the respective light sources corresponding to the incident portion in a predetermined posture or an arbitrary posture, and a support portion that is provided in the incident portion and has different inclination angles. The plurality of incident angle adjustment surface direction control units include the incident angle adjustment surface: ???::: The main ray direction is set so as to substantially coincide with the normal direction of the corresponding incident angle adjustment surface. In the first or second embodiment of the present invention, the light source is disposed in the front end surface of the light guide body. According to a third aspect of the present invention, a liquid crystal display device comprising the liquid crystal panel and the light source device according to the first or second aspect of the present invention is provided. In the light source device according to the first aspect of the present invention, the light from the light source constituting each group is disposed at the end of the light guide from the corresponding group, and at the same time, the light source can be refreshed. The brightness of the (4) ground is changed for each county area by controlling the amount of light emitted by each group. ^ The ability to drop can reduce manufacturing steps and success. Optical light according to the second aspect of the present invention, the light from the complex light source of each of the plurality of light sources is controlled by the incident direction control unit, and is converted into a plurality of types of light, and is transmitted at a guide f f f f , , ^ ^ ° These lights are then adjusted accordingly.卩The light source is output through the corresponding part, and the brightness of each part of the field can be arbitrarily changed by controlling the pre-sets of the respective groups. 201030284 Because: the use of a single light guide can arbitrarily change the individual exemptions of the multiple fields. Therefore, compared with the light guide plates in each of the prior art, the number of light guide plates is greatly reduced. i Since the light source can be disposed at the end of the light guide body, the manufacturing steps and costs can be reduced without causing a drop in optical performance. The liquid crystal display device according to the third aspect of the present invention includes the light source device of the first or second aspect of the present invention, so that a liquid crystal display device of high quality display and low cost can be provided. [Embodiment] Hereinafter, a light source according to an embodiment of the present invention will be described with reference to the drawings. In the following, an XYZ rectangular coordinate coordinate system is used for explanation. The thickness direction of the planar rectangular light guide plate to be described later is the z direction, the plane is perpendicular to the Z direction, and the direction along the side of the rectangular light guide plate. In the X direction (first direction), the direction perpendicular to the X direction is the Y direction (the second 方向 direction). The light source device is particularly suitable for use in a backlight of a liquid crystal display device as a backlight for illumination. The illuminating body is not limited to the liquid helium panel, and the light source device may be used for kanban lighting, display windows, or the like, or all other lighting, which is disposed in front of the store. The case of using a backlight of a liquid crystal display device will be described below as an example. (Embodiment 1) Fig. 1 is a cross-sectional view showing the overall configuration of a light source device according to Embodiment 1 of the present invention. Figure 2 is a cross-sectional view of the same part of the same device 7 201030284. Figure 3 is a plan view of the same device. The light source device 1 includes three light sources 2a, 2b, and 2e (a total of six light sources) arranged in two rows, and a light guide plate 3 that guides the light of the light sources 2a, 2b, and 2c. The light source 2a, 2b, 2c is an LED (Light Emitting Diode) used in this embodiment. The LED is a white light-emitting diode or a three-color (RGB) white light-emitting diode. However, the light sources 2a, 2b, and 2c are not limited to such LEDs, and may be at least turned on/off, and the control of the amount of light emission is performed in accordance with the required responsiveness. It is preferable to use a small-sized and high-concentration object for the light sources 2a, 2b, and 2c. On the other hand, the concentrating power of this embodiment is synonymous with the light exiting angle (irradiation angle) from the light source. The light sources 2a, 2b, 2c are preferably half values 60. Below, 30. The following is better~ and 20. The following is best. The half value here is a half value representing the full value of the half value. In the present embodiment, the light source uses a bullet-type LED whose luminance is a half value of 15. . The light guide plate 3 is provided with a light guide plate body 5 in which the incident end portion 4 through which the light is incident from the light sources 2a, 2b, 2c and the light incident on the incident end portion 4 are emitted to the inside. The light guide plate main body 5 is provided with a reflection φ 6' for reflecting light transmitted through the light guide plate main body 5 and an emission Φ7 which is emitted toward the reflection surface 6 and reflects the light reflected from the reflection surface 6. As shown in Fig. 3, the light guide plate main body 5 further has /, the incident end portion 4, the emission surface 7, and the end faces A and 垂直 perpendicular to the reflection surface 6. These faces will form a reflective surface. The light guide plate 3 is made of glass or a transparent resin. The transparent resin is not particularly limited, and can also be a propylene-ethylene copolymer, a polystyrene, an aromatic oxime, and a (partially) acrylic acid-based vinegar copolymer having a low-grade alkyl group. 201030284, polyethylene terephthalate An alcohol ester, a terephthalic acid-ethylene glycol cyclohexane methyl alcohol copolymer, a polycarbonate, an acrylic resin, or a resin having an alicyclic structure (for example, a bicycloheptane-based resin). In the transparent resin, it is preferable to use a resin having a water absorption of 0.25% or less, such as polystyrene having a low water absorbability and a small change in length, or a resin having an ester ring structure. When a resin having a water absorption ratio within the above range is used, the change in the positional relationship between the light source and the light guide body is reduced by reducing the change in the length of the light guide body. Therefore, it is possible to suppress a significant low optical characteristic. • T ° has an ester ring. The resin constructed is a resin having a structure of an ester ring and/or a side lock. From the viewpoint of mechanical strength and heat resistance, it is preferable that the main lock contains a resin having a vinegar ring structure. The ester ring structure can be a saturated cyclic niobium carbide (cycloalkane) structure and an unsaturated cyclic hydrocarbon (cycloolefin, cycloalkyne) structure. From the viewpoint of mechanical strength and heat, the naphthenic structure and the cycloolefin structure are better, and among them, the naphthenic structure is the best. The number of carbon atoms constituting the ester ring structure is generally 4 to 30, preferably 5 to 2, and most preferably 5 to 15 Å. In this range, characteristics such as mechanical strength, heat resistance, and moldability of the light guide plate are highly balanced, which is an optimum condition. The light guide plate 3 is formed of a rectangular plate-like body. In this embodiment, for example, the length of the rectangle in the X direction is set to 15 mm, the length of the rectangle is set to 50 mm, and the length (thickness) of the z direction is 4.5 mm. The light guide plate 3 of the embodiment has a refractive index of about 1533 and a critical angle of 40.7, and the incident end portion 4 is provided with incident angle adjustment surfaces 8a, 8b, and 8c as an incident direction control portion, so that the earth is long, and s Λ Each of the light sources 2a, 2b, and 2c enters the 201030284 light in the light guide plate 3 in a plurality of different types in the z direction. The incident direction control unit is a part of the injection position control structure. The control is such that the light from the light sources 2a, 2b, and 2c is emitted from a different partial region (described later in detail). The incident angle adjustment faces 8a, 8b, and 8c are inclined faces having different inclination angles with respect to the χ-γ plane. In this embodiment, for the χ_γ plane, the incident angle adjustment surface 8a is set to θι = 45 °, the incident angle adjustment surface gb is set to 02 = 6 〇 °, and the incident angle adjustment surface 8c is set to 03 = 75. . The light incident angle adjustment surfaces 8a, 8b, and 8c are respectively supported by the support substrates (not shown) at a predetermined angle. In this embodiment, the normal direction of the incident angle adjustment surface 8a is approximately the same as the chief ray direction of the light source, and the normal direction of the incident angle adjustment surface 8b is approximately the same as the chief ray direction of the light source 2b, and the incident angle adjustment surface 8c is The normal direction is approximately the same as the chief ray direction of the light source 2c. However, the respective normal directions of the incident angle adjusting surfaces 8a, 8b, and 8c do not necessarily have to coincide with the principal ray directions of the corresponding light sources 2a, 2b, and 2c, and may be oblique. In the case of oblique crossing, it is preferable to set it within an appropriate angle range so that 60% or more of the light emitted from each of the light sources 仏, 扑, & can be entered after the relationship of the refractive index of the resin constituting the light guide plate 3 is matched. Inside the light guide plate 3. It is also possible to use a material such as a lens or a plane mirror to change the direction of the light human light guide from the light source. In any case, it is preferable that the light emitted from each of the light sources 2a, 2b, 2c is 60 or more into the light guide plate 3. Preferably, the light 8 emitted from each of the light sources 2a, 2b, and 2c is incident on the light guide plate 3, and the light 9 emitted from each of the light sources 2a, 2b, and 2c is incident on the light guide plate 3, which is the best case. . The exit surface 7 of the light guide plate 3 has a partial field corresponding to the plural light type. 10 201030284 Each part of the field 7a, θ out of the field. These parts of the field 7 c疋 correspond to the unit area of the main primary brightness of the light. /, 讣, 是 means that when the area is controlled, the end of the incident end portion 4 is adjusted to the remote position 7; Along the x direction, it depends on the first picture, and some of the fields 7 7b and 7c are large 'but this is the relationship between the direction length and the field of some fields. In fact, these parts f have a domain. In the same long length of 7b, 7r玷Y, the length of each part of the field 7a, b 7C in the X direction is set to 50. The reflecting surface of the light guide plate 3 - TM ^ 2, ^, each ° The P-injured areas 7a, 7b, and 7c are provided with a sneak-in privileged "circumferential yang, 6-adjustment unit 6" 61) and 6c for guiding the corresponding light, and the octa a ice* is also The knives of the ejector position control structure are used to illuminate the respective light from the light sources 2a, 2b, and 々Λβ ry 2 from the different areas I of the mouths 7a, 7b, and 7c to the adjustment portions 6a, 6b. And 6c are arranged in the X direction in order from the distal end of the incident end portion 4 and respectively opposed to the partial regions 7b, 7C. Each of the adjustment portions 6a, 6b, 6c has a set pair XY plane a column of a plurality of inclined faces 6al, 6b1, and 6cl having mutually different inclination angles (a column formed by a complex rectangular angle 葙J _ J 1 plural right angle 二 稜鏡Each inclined surface β]e, the longitudinal direction of the round back bal, 6b1, and 6cl is arranged along the ¥ direction 'the inclined surfaces W and 6b at a predetermined pitch in the X direction. The adjustment portions 6a, 6b The inclination angle of 6c, 6M, 6ci is increased in order from the end of the XY plane to the distal end of the incident end portion 4. Here, the "sequential increase" is more than one inclined surface. Unit, and the angle on a unit is larger than the angle on the adjacent unit. This relationship will be 11 201030284 along a certain direction (in the above example, it is from the end to the end of the incident end 4). The inclined surface included in the unit may be only two or more. The number of inclined faces that the individual units individually may be the same or different from each other (for example, the inclined faces included in the adjacent three units are five to ten - 8 pieces, respectively). In this embodiment, the inclination angles of the inclined faces included in the i adjustment portions are the same as each other, and the inclination angles of the inclined faces are sequentially increased in units of the size of the adjustment portion. Specifically, the arrangement pitch of the inclined faces is set to 2 mm for all the adjustment portions 6a, 6b, and 6c, and the inclination angle of the inclined surface (f) of the adjustment portion 6a is set to 1.5. The inclination angle of the inclined surface 6Μ of the adjustment portion 6b is set to 2.5. The inclination angle of the inclined portion 6cl of the adjustment portion 6 is set to 4.5. In the present embodiment, each of the adjustment portions is constituted by a plurality of inclined surfaces having the same inclination angle, but the present invention is not limited thereto. It may be composed of a plurality of inclined faces of different inclination angles. In brief, each adjustment section can guide light from the corresponding light source to the corresponding partial fields. Here, a plurality of inclined faces including a plurality of types are used. In the case of the configuration, for example, the inclination angle can be increased or decreased continuously or stepwise as the distance from the light source is further increased. In the present embodiment, as described above, three adjustment portions are provided, and the adjustment portions are inclined. An adjustment portion of the inclined surface having an angle of 1.5, an adjustment portion having an inclined surface having an inclination angle of 2.5, and an adjustment portion having an inclined surface having an inclination angle of 4.5. Thus, in the present embodiment, the adjustment 4 is compared. The inclination angle of the inclined surface constituting each adjustment portion increases with the distance from the light 12 201030284. However, the present invention is not limited thereto, for example, comparing the adjustment portions between ' The inclination angles of the inclined surfaces of the adjustment portions may be sequentially reduced, or all of the same inclination angles. In brief, each adjustment portion can correctly guide the light from the corresponding light source to the corresponding partial fields. Since each of the adjustment portions 6a, 6b, and 6c is provided as the reflection surface 6, the surface including the inclined surfaces 6a1, 6b1, and 6c1 constituting the adjustment portion is a reflection surface. The reflection surface can be transmitted through the light guide plate 3. The resin plate of the present invention is formed by vapor-depositing anti-reflective metal or the like. The light source device of the present invention may also be provided with a white scattering plate (white reflection) on the back surface of the light guide plate 3, that is, on the back sides of the adjustment portions 63, 吒, 6 (; Plate) The angle of inclination of the inclined surface of the adjustment portions 6a, 6b, 6c, the thickness of the light guide plate 3 (that is, the length between the reflection® 6 and the exit surface 7), and the chief rays of the respective light sources 2a, 2b, and 2. The relationship between the direction and the angle of inclination of the incident angle adjustment surface ns: is set, and the light of the white light source 2a is mainly emitted from the partial field 7a, and the first main source from the well adjustment 1-丄1 Part of the field 7b shot 'from the light source 2c The light is mainly emitted by the partial field & the light source 2a, the incident angle adjustment surface ^, the adjustment portion, and the partial field 7a have mutual correspondences, and also the e J relationship, the source 2b, and the incident angle adjustment surface. 8b, the adjustment portion 6b, and the portions 4 1 + 々碉埤 7b have a mutual relationship with each other,

The light source 2c, the incident angle adjustment surface R surface 8c, the adjustment portion 6c, and the partial field 7c have a mutually corresponding relationship with each other. More specifically, the adjustment unit ba emits light at a lower angle than the critical angle determined by the refractive index of the light guide plate 3 so that the light corresponding to the light source 2a is emitted from the corresponding partial field 7a. . In order to prevent the non-corresponding light sources 2b and & the light source plate 3 from being emitted from the corresponding partial field 7a, the adjustment unit 6a reflects at a height of 7. Similarly, the modulating rate is equal to or greater than a critical angle of 6 Angle to the exit surface _ part of the field 7 b shot two two =: should::: light * corresponding part of the field two: / C reflection so that the light corresponding to the light source 2C is adjusted (four) 6e because there is no need to turn the light Internal (+χ is the coordinate; [the arrow on the axis, and the reflection can be transmitted without =1, the light on the adjustment unit 6c (4) is first reflected more internally. Therefore, the reflection on the adjustment unit 6 may not be equal to the angle of incidence. The non-diffusion reflection of the reflection angle. Therefore, the adjustment portion k may be, for example, a light diffusion surface in which a plurality of protrusions (hemispheres, helium cones, etc.) are disposed: all the light reaching the adjustment portion 6c is emitted from the partial field 7c. 2a, the light incident on the face center is adjusted by the incident angle to be reflected by the exit surface 7, and the adjustment portion 6& reflection 'is mainly emitted from the partial field h. The light incident from the light source 2b through the incident angle adjustment surface rib is emitted from the surface 7 The reflection is reflected by the adjustment portion 6b, mainly by the partial field 7b The light L3 incident on the incident angle adjusting surface 8c by the light source 2c is reflected by the emitting surface 7 and is reflected by the adjusting portion 6c, and is mainly emitted by the partial field 7c. Here, the light from each of the light sources 2a, 2b, 2c is entirely The corresponding partial fields 7a, 7b, and 7c are optimally emitted, but in reality, part of each light is emitted from a non-corresponding part of the field. "Mainly by ···jecting" means that there is a non-correspondence like this In the first figure, the light emitted from the light source 2a, 2b, and 2c is reflected on the exit surface 7 and is reflected by the adjustment portions 6a, 6b, and 6c. Finally, the partial field 14 201030284 7a 7b 7c is emitted, but in reality, the light of the light sources 2a, 2b, 2c is reflected and transmitted in the light guide plate 3 (between the exit surface 7 and the reflection surface 6), and each time in the adjustment portion 6a, gb When the 6C is reflected, the traveling direction is changed, and finally, the corresponding partial fields 7a, 7b, and 7c are emitted. At the end of the exit surface 7 of the light guide plate 3, a light diffusing plate (light diffusing sheet) 9 with a layer of air is disposed. The diffusion plate 9 is for diffusing from the respective fields 7a, 7b, 7c of the light guide plate 3. The light-diffusing sheet 9 is a plate-like body composed of a resin composition containing an additive other than a light-diffusing agent, or a transparent resin. The t-diffusion plate 9 is a flat plate having a smooth surface. Or a surface of one or both sides of the plate-like body is formed with a plurality of protrusions or a strip shape. According to the light source device 1 of the present embodiment described above, when a current is supplied to the light source 2a to illuminate it, the field 7a becomes bright. When the current is supplied to the light source 2b to illuminate, part of the field 7b becomes brighter. When the current is supplied to the light source 2c to make it redundant, the field 7c becomes brighter. By adjusting the light supply separately, 2b 2c The current 'can be arbitrarily changed to control the brightness of each of the corresponding wound areas 7a, 7b, and 7c. Thus, the brightness of the three divided partial areas 7a, 7b, 7c can be made independent of one light guide plate 3, and the control can be arbitrarily changed. Fig. 14 is a diagram showing the distribution of the divergence of the beam at the time when the light source hole is lit. As shown in Fig. 14, the light source is now partially illuminated by a portion of the field 7b. In the above-described embodiment 1 + , the 'preemptive arrangement' adjusts the center, 813, and 8 for each incident angle. They are arranged in 2 columns but they can also be [columns or 3 columns. ° 选择 Select the appropriate number based on the length of the gamma direction of the light guide plate 3 and the maximum amount of light emitted by the light source or 15 201030284 etendue. In the first embodiment, the light source 2a, the incident angle adjustment surface ga, the adjustment portion 6a, and the partial field 7a are provided in a mutually corresponding relationship; the light source 2b, the incident angle adjustment surface 8b, the adjustment portion 6b, and a partial field are provided. The system of 7b; and the system of the light source 2C, the incident angle adjustment surface 8c, the adjustment portion 6c, and the partial field 7c are three sets, but may be two sets of systems or four or more sets of systems. For systems with more than 4 sets of design, brightness control can be performed on more than 4 parts of the field using one light guide plate 3. The incident angle adjusting surfaces 8a, 8b, and 8c are brighter than the other portions of the light source portion of the light guide plate 3, that is, uneven brightness is generated, so that a plurality of lenticular lenses can be disposed. Shaped or convex) forms a cylindrical surface. The columnar surface is provided with a plurality of linear lenticular lenses and respective human angle adjustment surfaces ^, 81), 8 (parallelly extending. These lenticular lenses can be arranged, for example, along the γ-axis direction of Fig. 1 . i. Source, in the entire light source 2a, 2b, 2c, it is preferable that the corresponding intermediate portion 7b#light source 2b is lighter than the light source 2a corresponding to the portion of the wound region 7a close to the incident end portion 4, The light source 2c corresponding to the farthest part of the field 7c is less concentrated than the light source corresponding to the middle part of the field. This is to suppress the decrease of the light due to the difference in the length of each light path and to The illuminance of 7c is uniform in each part of the field. The light collection of the light source 2a 2b ' 2c can be used with different luminosity

201030284 Set illuminance ° The light collection of each light source can be 'w, the direction of the chief ray is ΧΠΓ ~ (C) shows the white direction of the ,, perpendicular to the X direction and the direction of the y direction toward the paper is y direction, vertical The direction in the y direction is the ζ direction, the illuminance of the ζ# direction is the same, and the luminosity in the y direction is sequentially reduced. The above-described light source device 1 is used as one single S, and a plurality of early %' can be appropriately arranged to constitute an illumination device for illuminating the entire field of the liquid crystal panel as an object to be illuminated. • Fig. 5 is a plan view showing an example of an illumination device in which a plurality of the above-described light source devices are arranged to constitute the entire illumination liquid crystal panel. The illuminating device 1 〇 has the light source 2 end as the outer side and the opposite end of the light source 2 as the inner side, so that the two light source devices are adjacent in the 纟X direction and symmetrical in the γ direction, and then the two light source devices 1 are A plurality of (three in the figure) adjacent configuration in the γ direction. Since one light source device i can adjust the twist of three partial fields (^, π, 7c), it can be realized with six light guide plates. Lighting devices in some areas. In the prior art, 18 light guide spring plates are required at this time, so the present invention greatly reduces the number of light guide plates. The light source 2 ( 2a, 2b, 2c) is disposed outside the light guide plate, so that it is not necessary to arrange the light source in the field of illumination effective as in the prior art, so that the month b can suppress uneven illumination caused by the light source itself or wiring or the like. Light leaks, and no additional design is required to prevent these problems. Because the number of light guide plates is small, manufacturing steps or costs can be reduced. In addition, since the light source is a lateral light source in which the light source is disposed on the side surface of the light guide plate, the thickness of the entire illumination device can be greatly reduced as compared with the direct type illumination device in which the light source is disposed on the diffusion plate and directly below the light source. In the case of the display device, the number of the light source devices 1 that are disposed adjacent to each other is not limited to three, and may be two or four or more. Fig. 6 is a plan view showing an example of an illuminating device which omits a part of the illuminating liquid crystal panel by arranging a plurality of the light source devices. Lighting device in Figure 5! ", the two light source devices 1 described above are arranged adjacent to each other in the X direction so that the directions are opposite to each other, but in the illumination device of Fig. 6, the light guide plates of the two light source devices are formed. 'Therefore, the two light source devices constitute the same unit. Removal—Beyond the point that there is no boundary between the light guide plates, it is substantially the same as the composition of the = map. With such a composition as described above, one unit can be used for the redundancy adjustment of six partial fields, so that the number of the light guide plates can be further reduced, and the structure is formed in the γ direction. The number of light source devices is not limited to three, and is also set to one or more.疋z Washing Fig. 7 is a view showing the improvement of the above-described light source device. The pair of light sources 2 (the 2a and 2a, the 2b and 2b, and the 2nd direction corresponding to the partial parts C and 2C in the partial direction of the light source device) shown in Fig. ith to Fig. 3 are used. The light is supplied to the light collection unit 3 so that the light can be supplied to the respective corresponding portions: and the light source device 12 of the seventh image set in each of the light sources 2 has the entirety of the i-th to the γth. In this regard, 7a, 7b, and 7c do some of the fields in the Y-direction of the 2-point map. H 13b, 13c, 14a, 14b, & ^ total 6 partial fields C, - side light source 2 ~ 丨The collected light 18 201030284 degrees (the chromaticity in the y direction of Fig. 4) is set to be able to supply the light of the corresponding partial areas 13a, 13b, 13c, and the light collection of the other side of the light source 2-2 (Fig. 4 y direction) The illuminance is set to be light that can supply the corresponding partial fields 14a, 14b, and 14c. With the above-described configuration, one light source device 12 can control the brightness of the six partial fields 13a, 13b, 13c, 14a, 14b, and 14c, so that it can be increased from the light source devices shown in FIGS. 1 to 3 Large brightness adjustable collar # number of fields. By using such a plurality of light source means 12 to constitute the same structure as shown in Fig. 5 or Fig. 6, the number of areas in which the brightness can be adjusted is doubled, so that finer brightness control can be performed. In Fig. 7, 'the light source row 2-1 composed of the light sources 2a, 2b, & and the light source rows 2_2 composed of the light sources 2a, 2b, and 2c are two columns in total, but may be three or more columns. The number of brightness adjustable fields can be increased. ❿ Applying this principle, as shown in Fig. 8, using a single light guide plate, setting the light source Η~2-n (n is an integer of 3 or more), the dog can realize the illumination collar 2μ, == all fields are arbitrarily divided Some of the fields may be different (Embodiment 2), wherein the first embodiment is shown, and the second embodiment of the present invention will be described with reference to FIG. Instructions. In the second embodiment, the thickness of the incident end portion 5 of the first embodiment of the present invention is also changed. The composition of the fourth embodiment is further reduced. This is different from Embodiment 1 described above. That is, the farther the reflecting surface is from the incident end, the distance from the exit surface is reduced stepwise. In other words, the light guide plate 22 included in the light source device 21 of the second embodiment includes the incident end portion 23 of the light incident on the light sources 2a, 2b, and 2c, and the light incident from the incident end portion 23 is guided to the inside and emitted. Light guide plate body 24. Similarly to the light guide plate main body 5 of the above-described embodiment i, the light guide plate main body 24 includes a reflection surface 6 that reflects light transmitted inside the light guide plate main body 24, and a light that is reflected by the reflection surface 6 and that is reflected by the reflection surface 6. Shot · Face 7. The incident end portion 23 is provided with incident angle adjustment surfaces 23a, 23b, and 23c as incident direction control portions, and the light incident on each of the light sources 2a, 2b, and 2c into the light guide plate 22 is converted into a plurality of types of light having different incident directions. . The incident angle adjustment faces 23a, 23b, and 23c are inclined faces that are different from each other in the [γ plane inclination angles. In this embodiment, the incident angle adjustment surface 23a is set to ?45 with respect to the χ_γ plane. The angle of incidence adjustment is set to 012=60. The incident angle adjustment surface 23c is set to π = 75. . Corresponding to these incident angle adjustment surfaces 23a, 23b, and 23c, the light sources 2 & 2b, 2c are respectively arranged at a predetermined angle. The reflecting surface 6 of the light guide plate main body 24 is provided with the same adjusting portion 6a and flapping member as in the above-described first embodiment. In this embodiment, as shown in the figure, the thickness dl of the end portion of the light source end of the light guide plate is 4. 5 mm, the length d2 of the end portion X direction is 2.5 mffi, and the thin portion thickness d3 of the light guide plate 22 is 2 mm. The other components are the same as those of the above embodiment i. 20: 201030284 The light source device 21 having the above-described configuration is configured as one unit, and by arranging a plurality of units as appropriate, the same illumination device as that of the fifth to eighth embodiments can be constructed, and the illumination is used as the liquid crystal of the object to be illuminated. The entire field of panels. (Embodiment 3) Next, Embodiment 3 of the present invention will be described with reference to Fig. 10. The components that are substantially the same as those in FIGS. 1 to 3 will be denoted by the same reference numerals, and the description of the portions will be omitted. This embodiment 3 is different from the above-described first embodiment in that the composition of the incident end portion 4 of the above-described first embodiment is changed while the light source is designed to be directed in the +Z direction. In other words, the light guide plate 32 included in the light source device 31 of the third embodiment includes the incident end portion 33 of the light incident on the light sources 2a, 2b, and 2c, and the incident light is guided to the inside through the incident end portion 33. Light guide plate body 34. Similarly to the light guide plate main body 5 of the above-described embodiment, the light guide plate 34 includes a reflection surface 6 that reflects the light transmitted through the light guide plate main body 34, and an emission surface that is opposite to the reflection surface 6 and that reflects the light reflected by the reflection surface 6. Face 7. The incident end portion 33 is disposed on the side portion of the light guide plate body 34, and is integrally formed with the light guide plate body. The incident end portion 33 is provided with incident angle adjusting surfaces 35a, 35b, and 35c as incident direction control portions, and the light incident on each of the light sources 2a, 2b, and 2c through the incident end portion 33 into the light guide plate 32 is changed to be different from each other in the incident direction. The plural kind of light. The incident angle adjustment faces 35a, 35b, and 35e are inclined faces that are different in inclination angle with respect to the X-Y plane. The light sources 2a, 2b, and 2c correspond to the incident angle adjustment faces 35a, 35b, and 35c, respectively, and are disposed at the _2 direction end of the incident end portion 33 and are arranged in the χ direction in the +z direction. The light of the light source 2a is reflected by the incident angle adjustment surface 35a, and then incident on the light guide plate main body 34 at an angle of 21 201030284. The light of the light source 2b is reflected by the incident angle adjustment surface 35b and then incident on the light guide plate body 34 at a predetermined angle. After being reflected by the incident angle adjustment surface 35c, the light guide plate body 34 is incident at a predetermined angle. The other constituent structures are the same as those of the above embodiment i. The light source device 31 having the above-described configuration is used as one unit, and by arranging a plurality of units as appropriate, the same illumination device as that of the fifth to eighth embodiments can be constructed, and the illumination is used as the liquid crystal panel of the object to be illuminated. All areas. (Embodiment 4) φ Next, a fourth embodiment of the present invention will be described with reference to Fig. 11. The components that are substantially the same as those in FIGS. 1 to 3 will be denoted by the same reference numerals, and the description of the portions will be omitted. In the fourth embodiment, the adjustment portions 6a, 6b, and 6c provided on the reflecting surface 6 in the first embodiment are not disposed on the reflecting surface, but are placed on the emitting surface 7. The remaining parts are the same as in the above-described first embodiment. That is, the light guide plate 42_ provided in the light source device 41 of the fourth embodiment includes the incident end portion 43 that receives light from the light source (not shown in FIG. 11), and the incident end portion 43 guides the incident light to the inside. The light guide body 44 that is ejected. Similarly to the light guide plate main body 5 of the above-described embodiment i, the light guide plate 44 includes a reflection surface 6 that reflects the light transmitted through the light guide plate main body 44, and an emission surface that is opposite to the reflection surface 6 and that reflects the light reflected by the reflection surface 6. Face 7. However, in the first embodiment, the reflecting surface 6 is provided with the adjusting portions 仏, 6b' 6c, and in the fourth embodiment, the adjusting portions 6a and 讣, "the same adjusting portions 45a, 45b, 45c are provided on the emitting surface 7 22 201030284 The structure of the incident end portion 43 is the same as that of the incident end portion 4 of the first embodiment described above, and the incident end portion may have the same structure as the incident end portions 23, 33 of the above-described second to third embodiments. 5) Next, a fifth embodiment of the present invention will be described with reference to Fig. 12. The components that are substantially the same as those of Figs. 1 to 3 will be denoted by the same reference numerals, and the description of the portions will be omitted. The inclination of the reflection surface 6 of the first embodiment to form the adjustment portion is different from that of the first embodiment. That is, the light guide plate 52 of the light source device 51 of the fifth embodiment is provided with an incident light source (not shown in Fig. 12). The light incident end portion 53 and the light guide plate body 54 that guides the incident light to the inside through the incident end portion 53. The light guide plate 54 is the same as the light guide plate body 5 of the first embodiment described above. a reflecting surface 6 of light transmitted within the body 54, and reflecting therewith The surface 6 faces and emits the light-emitting surface 7 of the light reflected by the reflecting surface 6. However, in the first embodiment, the 'reflecting surface 6 is disposed in a state of being approximately parallel with respect to the emitting surface 7'. In the fifth embodiment, the reflection is performed. The distance of the surface 6 from the exit surface 7 is inclined gradually (continuously) as it goes further from the incident end portion 53. By thus inclining the reflecting surface 6, the same as the adjusting portions 6a, 6b, 6c can be realized. The function "the inclination of the reflecting surface is not constant, but it is gradually (continuously) decreased as it goes away from the incident end portion 53. For example, as shown in Fig. 12, the inclination angle of the reflecting surface 6 may be entirely The faces are all the same. As shown in Figures 20 and 21, the inclination angle of the reflecting surface 23 201030284 degrees may not be exactly the same. More specifically, the angle of inclination of the reflecting surface close to the light source may be as shown in Fig. 2 Small 'larger inclination angle away from the reflection surface of the light source' or as shown in Fig. 21, the inclination angle close to the reflection surface of the light source is large, and the inclination angle away from the reflection surface of the light source is small. Fig. 20 and Fig. 21 are different. Inclined angle of the reflective surface (in the second 0 is 6 a2 to 6 c2, and 21st illustrations 6a3 to 6c3 ) can respectively correspond to the partial fields 7a to 7c shown in Fig. 1 and other figures, and the inclined reflecting surface 6 can also be provided and adjusted. 6a, 6b, 6c are the same inclined faces (rows). In this case, the angle of the inclined faces of the respective adjustment portions must be appropriately changed in accordance with the inclination angle of the reflecting surface 6. However, Fig. 12 shows that the reflecting surface 6 is continuous. The inclined surface may be a stepped (stepwise arrangement) inclined surface having the same inclination angle. (Embodiment 6) Next, a sixth embodiment of the present invention will be described with reference to Fig. 13. Here, with Figs. 1 to 3 Substantially the same components will be denoted by the same reference numerals, and the description of this section will be omitted. In the sixth embodiment, the position and angle of the light source 2 (2a, rib, 2c) in the above-described embodiment i can be arbitrarily adjusted, and the light source 2 is movably supported, which is different from the first embodiment. That is, the light source 2 provided in the light source device 61 of the sixth embodiment is not slidably moved as a branching member (not shown in the figure) as a branching member of the incident direction control portion. . The drive mechanism, which is not shown in the figure, is capable of rotating continuously (in any angle) or stage (established step 甶庳, Du Gu angle) in the range of the yaw angle. The rotational driving light source 2 can change the incident angle of the first light guide plate 3 emitted by the light source 2. 201030284 The angle and position of the light source 2 are set such that the principal ray direction is the symbol fl in the figure, and the light incident on the light guide plate 3 is emitted by the adjustment portion 6a to the partial field 7a. Knee: This eg q ^ sets the angle and position of the light source 2 in the direction of the principal ray in the direction of the symbol f2 in the figure, and the light incident on the light guide plate 3 is emitted to the partial field 7b by the adjustment portion 6b. The angle and position of the light source 2 are set such that the direction of the light is in the direction of the symbol f3 in the figure, and the light incident on the light guide plate 3 is emitted to the partial field 7e by the adjustment portion. In this way, it is possible to selectively emit light from the injured areas 7a, 7b, 7c. The rest is the same as in the above embodiment 1. (Embodiment 7) Next, Embodiment 7 of the present invention will be described with reference to Fig. 15. The components that are substantially the same as those in FIG. 1 and FIG. 3 will be denoted by the same reference numerals, and the description of the portions will be omitted. "The seventh embodiment is different from the first embodiment in that the structure of the incident end portion 4 of the above-described embodiment is changed, and the light source is directed to the +z direction and the reflecting surface 6 is inclined to constitute the adjustment portion. That is, the light guide plate 72 included in the light source device 71 of the seventh embodiment is provided with the incident end portion 73 of the light from the light sources 2a, 2b, and 2c, and the incident end portion 73 is guided to the inside through the incident end portion 73. The light guide plate body 74 is emitted. The light guide plate 74 includes a reflection surface 6 that reflects the light transmitted through the light guide plate main body 74, and an emission surface 7 that opposes the reflection surface 6 and emits light reflected by the reflection surface 6. The incident end portion 73 is disposed on the side of the light guide plate body 74, and has a structure formed integrally with the light guide plate body. The incident end portion 73 is provided with a total reflection surface 75a' partial emission surface 75b and partial incident angle adjustment surfaces 75c and 75d for reflecting the light of each of the light sources 2a, 25 201030284 2b and 2c toward the light guide plate main body 74. The total reflection surface 75a, the partial emission surface 75b, the partial incident angle adjustment surface 75c, and a part of the emission position control structure (incidence direction control unit) cause the light sources 2a, 2b, and 2c to be different from each other. The field is, 7b,. Shoot out. The total reflection center is set at about 45° in the two directions (light emission directions of the respective lights #2a'2b and 2c). Part of the exit surface 75b Xiao γ_ζ plane approximate

Parallel settings. The partial incident angle adjusting faces 75c and 75 are continued to have inclined faces different in inclination angle from each other. The light sources 2a, 2b, and 2c are arranged in the -ζ direction of the incident end portion 73, and are arranged in the direction of the χ in the direction of the 。. The light of the light source 2a is reflected by the total reflection surface, and is emitted from the partial incident surface through the partial incident angle adjustment surface 75d to the inside of the guide through a portion of the incident angle adjustment surface 75d. This first angle is set to an optimum angle at which the light of the light source 2a incident on the light guide plate 74 is mainly emitted by the partial field 7a of the exit surface 7. The light of the light source 2b is totally reflected

The 75a reflection is emitted from the partial emission surface 75b, and is transmitted through the partial incident angle adjustment surface to be guided into the light guide plate main body 4 at a predetermined second angle with the i-th angle. This is the optimum angle of the two areas of the light source of the "light source in the incident light guide body 74". Light source 2. The light is reflected by the total reflection surface 75a and is emitted by the partial field 7e of the conduction surface 7! In the light guide plate body 74, the distance between the emitter and the exit surface 7 is gradually decreased (continuously) as it moves away from the incident end 73. The tilt design of the medium is the same as that of the above-described embodiment 5, 26 201030284 Description. Other constituent structures are the same as those of the above-described first embodiment. The light source device 71 having the above-described configuration is used as one unit, and by arranging a plurality of units as appropriate, the same illumination device as that of Figs. 5 to 8 can be constructed, and the illumination is used as the liquid crystal panel of the object to be illuminated. All areas. (Example 8)

Next, an embodiment 8 of the present invention will be described with reference to Fig. 16. The components that are substantially the same as those in FIGS. 1 to 3 will be denoted by the same reference numerals, and the description of the portions will be omitted. In the eighth embodiment, the configuration of the incident end portion 4 of the first embodiment is changed, and the light source is directed to the +Z direction while changing the structure of the light guide plate main body 5 is different from that of the first embodiment. In other words, the light guide plate 82 included in the light source device 81 of the eighth embodiment includes the incident end portion 83 that receives the light from the light sources 2a, 2b, and 2c, and the incident end portion 83 guides the incident light to the inside and emits the incident light. Light guide plate body 84. The light guide plate main body 84 includes three light guiding portions 84a, 84b, and 84c. The position of the light guiding portions 84a and 84b' 84c at the position of the incident end portion 83 (the left end of the same figure) is the main portion of the light guiding portions 84a, 84b, and 84c that are connected to each other. Each of the light guiding portions 84 & Mb, - is provided with adjustment portions (reflecting surfaces) 6a, 6b corresponding to the respective partial regions 7a, 7b, and 7c of the emitting surface 7, and adjustment. Each of p 6a, 6b, and 6c is provided with a plurality of inclined faces (the inclination angles of the inclined faces of the rows (the inclination angles to the χ γ plane) are substantially identical here. 』 The emitter end portion 83 is disposed in each of the light guiding portions 84a. The sides of the 84b and 84c, 27 201030284, and the light guide plate body are integrally formed. The incident end portion is provided with light incident from the light sources 2a, 2b, 2c and transmitted through the incident end portion 83 into the light guide plate 82. The total reflection surface center of each of the light guiding portions 84a, 84b, and 84c. The total reflection surface 853 is disposed at a 45° angle with respect to the z direction (light source 2a, rib, and light emission direction). The light source is arranged in 2b and 2c. The direction of the incident end portion 83 in the _2 direction is aligned in the X direction in the +Z direction. The light of the light source 2a is reflected by the total reflection surface 85a and then guided to the light guiding portion 84&; The inner portion transmits a portion of the straight portion of the light guiding portion 84c and a straight portion of the light guiding portion 84c (the portion where the =6C is not provided), and is emitted from the partial field 7a. The light of the light source 2b is guided to the light guiding portion 84b of the light guide plate after being reflected by the total reflection surface center. The light is transmitted inside the light guiding portion 8 and reflected by the adjusting portion, and the straight portion passing through the light guiding portion 84e is Part of the field 7b is shot. The light of the light source is guided to the light guide plate main body guide portion 84 after being reflected by the total reflection surface 85a. The light is transmitted through the light guiding portion 84c and is reflected by the adjusting portion & The other constituent structures are the same as those of the above embodiment i. The light source device 8]___ which is configured as described above is configured as a single unit, and the flute RfSI~dream can be constructed by appropriately arranging the plural unit. / The same lighting device as in Fig. 8 of the figure is the whole field of the liquid crystal panel of the object to be illuminated. (Embodiment 9) Next, a ninth embodiment of the present invention will be described with reference to Figs. The components that are substantially the same as those of the first to third figures will be denoted by the same reference numerals, 28 201030284 and the description of this part will be omitted. In the ninth embodiment, the structure of the above-described eighth embodiment is changed, and the respective light guiding portions 84a, 84b, and 84c and the incident end portion 33 are mainly different for each of the light source holders and & In other words, the light guide plate 92 included in the light source device 91 of the ninth embodiment includes three light guide portions that are vertically separated from each other.

❿ Each of the light guiding portions 94a, 94b, and 94c includes an incident end portion corresponding to the incident light sources 2a, 讣, and (4) light, and a light guiding portion main body. Each of the light guides 4 94a, 94b, and 94c includes adjustment portions (reflection surfaces) 63 and 6b corresponding to the respective field regions 7a, 7b, and 7c of the emission surface 7. The adjustment portions 6a, 6b, and 6c are each provided with a plurality of inclined faces. The inclination angle of each inclined surface (the inclination angle to the [Y plane) is approximately the same in this embodiment. The incident end portions of the light P 94a 94b, 94c are respectively disposed corresponding to the light guide portion body side end. The incident end portions of the light guiding portions 9A, _, and We have total reflection surfaces 95a, 95b, and 95c that allow light from the respective light sources 2a, 2b, and 2c to enter the corresponding light guiding body. The total reflection surfaces 95a, 95b, 95c are respectively disposed at an angle of about 45 in the z direction (light emission directions of the respective light sources 23, 2). The light sources 2a, 2b, and 2c are arranged in the -Z direction of the emitters 4 of the corresponding light guiding portions, ..., (10), and 9A, and are arranged in the X direction so as to point in the +2 direction. The light source 2a & light is reflected by the total reflection surface of the incident end surface of the light guiding portion 94a, and is guided to the light guiding portion body of the light guiding portion 94a, and is transported inside the light guiding portion body and reflected on the adjusting surface 6a. , shot by part of the field 7a. The light of the light source 2b is reflected by the total reflection surface (10) of the incident end surface of the light guiding portion 9 and then guided to the light guiding portion body of the light guiding portion 94b, and transmitted in the light guiding portion body and on the adjustment surface 6b. Reflection, which is shot by some areas. The light of the light source & is reflected by the total reflection surface 95c of the incident end surface of the light guiding portion 94c, and then guided to the light guiding portion body of the light guiding portion 94c, and transmitted through the light guiding portion body and reflected by the adjusting surface 6c. Shot from part of the field 7c. The other constituent structures are the same as those of the above embodiment. The light source device 91 having the above-described configuration is used as a unit. By appropriately arranging a plurality of units, the same illumination device as that of the fifth to eighth embodiments can be constructed, and the illumination is used as the liquid crystal panel of the object to be illuminated. All areas. ❹ (Embodiment 10) Next, an embodiment 1 of the present invention will be described with reference to Fig. 18. The components that are substantially the same as those of Figs. 1 to 3 will be denoted by the same reference numerals, and the description of the portions will be omitted. In the tenth embodiment, the structure of the incident end portion 4 of the first embodiment is changed, and the light source is directed to the +Z direction ', and the inclination angles of the inclined surfaces of the respective adjustment portions 6a, 6b, and 6c of the reflection surface 6 are set to be approximately the same. The point is not the same as the above embodiment 1. In other words, the light guide plate 102 included in the light source device 1A of the tenth embodiment includes the incident end portion 1〇3 through which the light from the light sources 2a, 2b, and 2c is incident, and the incident end portion 103 guides the incident light to the inside. And the light guide plate body 104 is emitted. The light guide plate 104 is the same as the light guide plate main body 5 of the first embodiment described above, and includes a reflection surface 6 that reflects the light transmitted through the light guide plate main body 104, and an emission surface that opposes the reflection surface 6 and reflects the light reflected by the reflection surface 6. Face 7. 30 201030284 The incident end portion 103 is disposed on the side of the Shima 1Λ/1 straight π, the guide plate body 104, and the human light end portion 103 of the 盥 light board body is integrally formed as the incident direction control portion. The three concave reflecting surfaces (the back, the early straight mirror) l〇5a, l〇5b, 1〇5c, the light sources 2a, 2b, 2c are transmitted through the incident end 1〇3 to the light guide plate ι 2 The light incident inside is converted into a plurality of types of light whose directions of human incidence are different from each other.

The source 2a, 2b, 2c is disposed at the incident end portion 1〇3. The direction ends are arranged in the +2 direction along the u direction. The light of the light source 2a is reflected by the concave reflecting surface 1〇5a into approximately parallel light, and is guided into the light guide plate main body 1〇4 so as to be directed to the plurality of adjusting portions 6a of the reflecting surface 6, and the plurality of tilting portions of the adjusting portion After the surface reflection, the light is emitted from the partial field 7a. The light of the light source 2b is reflected by the concave reflecting surface 10b to be converted into approximately parallel light, and is guided into the light guide plate body 104 to be directed to the plurality of adjusting portions 6b of the reflecting surface 6. After being reflected by the plurality of inclined faces of the adjusting portion 6b, the light is emitted from the partial field 7b. The light of the light source 2c is reflected by the concave reflecting surface 105c into approximately parallel light, and is guided into the light guide plate body 104 to be directed to the reflecting surface. The plurality of adjustment units 6C of 6 are reflected by the plurality of inclined surfaces of the adjustment unit 6c, and are emitted from the partial field 7c. The other components are the same as those of the first embodiment. The light source device 71 having the above-described structure is made as one In the unit, by arranging a plurality of units appropriately, it is possible to constitute the entire field of the liquid crystal panel which is the same as that of the fifth to eighth embodiments. (Embodiment 11) Next, refer to FIG. An embodiment 11 of the present invention will be described. The components that are substantially the same as those in the first to third embodiments will be denoted by the same reference numerals and will not be described. 31 201030284 The light guide plate 112 of the light source device 111 of the eleventh embodiment has incidence from the incident. The light incident end portion 113 of the light sources 112a and 112b and the light guide plate body 114 that guide the incident light to the inside through the incident end portion 113. The light guide plate 114 is provided with the light transmitted from the light guide plate body 114. The reflecting surface 6 and the emitting surface 7 opposed to the reflecting surface 6 and emitting the light reflected by the reflecting surface 6 are formed.

The incident end portion 113 is provided with two light sources U2a and U2b pointing in the +γ direction. The direction of travel of the light is the ζ direction. The light source U2a emits a light source having a specific "directional polarization" on a plane perpendicular thereto, and the light source 112b emits y on the plane orthogonal to the χ direction. A light source that is linearly polarized in the y direction of the direction polarization.

The exit surfaces 7 of the light guide plate body 114 are respectively provided with filter and membranes 115a and U5b corresponding to the two partial portions 7a and 7b. The film 115a disposed in the partial field & in this embodiment is a film having a linearly polarized reflection characteristic in which the incident pupil direction is linearly shifted through the 'y direction'. The filtration membrane 115b disposed in the partial field 7 is, in this embodiment, a membrane having a polarized light reflection characteristic in which the incident y direction is directly polarized and the X direction is linearly polarized. The x-direction linearly polarized light that is emitted from the light source 112a and transmitted through the incident end portion 113 to the light guiding phase body 114 is appropriately reflected between the reflecting surface 6 and the emitting surface, and penetrates the filtering film U5a from a partial field. a shot part of the field 7b is linearly polarized by the filtering film 115b reflecting the pupil direction, so that the light from the light source l12a is taken out from the partial field 7b. After being emitted from the light source, it is guided to the y-direction linearly polarized light in the light guide plate main body 114, and is appropriately reflected between the reflection surface 6 and the emission surface 7, and is worn by the medium 115b 32 201030284 and is less emitted by the partial injury field 7b. The partial field 7a is linearly polarized by the filtering film j 5a reflecting 乂, and thus the light from the light source 112b is suppressed from being emitted from the partial field 7a. Other constituent structures are the same as those of the above-described first embodiment. The light source device (1) having the above-described configuration is used as one unit, and by arranging a plurality of units as appropriate, the same illumination device as that of Figs. 5 to 8 can be constructed, and the illumination is used as the liquid crystal panel of the object to be illuminated. All areas. The embodiment described above is for the purpose of simplifying the description of the present invention and is not intended to limit the invention. Therefore, various modifications and alterations of the above-described embodiments are readily understood by those skilled in the art. The above disclosure should be considered as illustrative of the text used in the present invention and should not be construed in a limiting sense. The invention is limited only by the scope of the claims and the full scope of the claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a light source device according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view showing an essential part of a light source device according to Embodiment 1 of the present invention. 3 is a plan view of a light source device according to Embodiment 1 of the present invention. The 'golden diagram' is a diagram for explaining the light collection of the light source according to Embodiment 1 of the present invention. Fig. 3 is a plan view showing an example of a lighting device using the light source device of the first embodiment of the present invention. Fig. 6 is a plan view showing an example of an illumination device constructed by a light source device according to a light source device according to a first embodiment of the present invention. Fig. 7 is a plan view showing an example of a light source device in which the light source device of the first embodiment of the present invention is improved. Fig. 8 is a plan view showing a lighting device to which the light source device of Fig. 7 of the first embodiment of the present invention is applied. Fig. 9 is a cross-sectional view showing an essential part of a light source device according to a second embodiment of the present invention. Fig. 10 is a cross-sectional view showing an essential part of a light source device according to a third embodiment of the present invention. Fig. 11 is a cross-sectional view showing an essential part of a light source device according to a fourth embodiment of the present invention. Fig. 12 is a cross-sectional view showing an essential part of a light source device according to a fifth embodiment of the present invention. Figure 13 is a cross-sectional view showing an essential part of a light source device of Embodiment 6 of the present invention. Fig. 14 is a diagram showing the distribution of the beam emission when the light source 2b of the first embodiment of the present invention is turned on. Fig. 15 is a cross-sectional view showing an essential part of a light source device of Embodiment 7 of the present invention. Figure 16 is a cross-sectional view showing an essential part of a light source device of Embodiment 8 of the present invention. Fig. 17 is a cross-sectional view showing an essential part of a light source device of a ninth embodiment of the invention. Fig. 18 is a cross-sectional view showing an essential part of a light source device according to Embodiment 1 of the present invention. Fig. 19 is a cross-sectional view showing an essential part of a light source device of Embodiment n of the present invention. Fig. 20 is a cross-sectional view showing an essential part of a light source device according to a modification of the fifth embodiment of the present invention. Fig. 21 is a cross-sectional view showing an essential part of a light source device according to a modification of the fifth embodiment of the present invention.

Main component symbol description] 1 to light source device; 3 to light guide plate; 5 to light guide plate body; 2 (2a, 2b, 2c) to light source 4 to incident end portion; 6 to reflective surface; 6, 6b, 6C to adjustment portion; 7~ exit surface; 8a, 8b, 8c~ incident angle adjustment surface;

9 ~ light diffuser; 10, 11 ~ lighting device. 35

Claims (1)

201030284 VII. Patent application scope: 1. A light source device comprising a plurality of light sources and a light guide for guiding light from the light source, wherein the light guide body comprises: an incident portion for causing light from the light source to enter; a light guide body The main body 'guides the light incident from the incident portion to the inside and emits the light, and the light guide body includes: a reflecting surface 'reflecting light transmitted in the body of the light guiding body; and the emitting surface' facing the reflection The light reflected by the reflecting surface is emitted, and the emitting surface includes a plurality of partial regions different in position from each other, and the plurality of light sources are classified into a plurality of groups corresponding to the plurality of partial regions, and the light source device further has an emitting position The control structure controls the emission positions of the light from the light sources constituting each group so as to emit the outside of the light guide body from the partial ❹ field of the corresponding group. 2. The light source device according to claim 1, wherein the emission position control structure includes: an incident direction control unit that controls light from the light source and enters the body of the light guide through the incident pupil with respect to the guide The incident direction in the thickness direction of the light body is a plurality of types of light that are different from each other; the adjustment portion is provided on at least one of the reflection surface and the emission surface, and is used to guide each part of the field Light. The light source device of claim 2, wherein the adjustment portion is sequentially disposed along a second direction from the end of the incident portion toward the distal end, and the inclination angles are set to be different from each other. Inclined surface. 4. The light source device according to claim 2, wherein the reflecting surface is formed such that the farther from the incident portion, the distance from the emitting surface is gradually reduced. 5. The light source device according to claim 3, wherein the inclination angle of the reference inclined surface is opposite to a plane orthogonal to the thickness direction of the light guide body, and is close to the distal end of the incident portion The order increases. 6. The light source device according to claim 5, wherein the adjustment portion is formed by a row, and the row is a longitudinal direction in a second direction orthogonal to the second direction, and is disposed in the longitudinal direction a plurality of the inclined surfaces in the second direction. The light source device according to any one of claims 2 to 6, wherein the incident direction control unit includes a plurality of incident angle adjustment surfaces provided on the incident portion and having different inclination angles, wherein the light source The main ray direction is set to be approximately coincident with the normal direction of the corresponding incident angle adjustment surface. 8. The light source device according to any one of the preceding claims, further comprising a light diffusing plate disposed at the exit surface end of the light guide. A liquid crystal display device comprising a liquid crystal panel and a light source device according to any one of claims 1 to 8. 37