TW200912478A - Illumination assembly including wavelength converting material having spatially varying density - Google Patents

Abstract

Illumination assemblies, components, and related methods are described. An illumination assembly can include at least one solid state light-emitting device, and at least one light guide including a light homogenization region configured to receive light emitted by the solid state light-emitting device and including a light output boundary. The light homogenization region substantially uniformly distributes light outputted over the light output boundary. A wavelength converting material can be disposed within at least a portion of the light homogenization region. In some assemblies, a light extraction region can be configured to receive light from the light output boundary of the light homogenization region, and can have a length along which received light propagates and an emission surface through which light is emitted. The light extraction region can include a wavelength converting material disposed within at least a portion of the light extraction region.

Description

200912478 " IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a lighting system, and is more suitable for the lighting system of a solid-state lighting device. It is related to the prior art. Light for a variety of applications, JZ. mm, including general lighting and electronic applications. For example, a backlight combination can be used for η _ province such as liquid crystal display 芎 π rm

The .4 does not provide light. At present, such a backlight group D 4, ^ rrnv, x port mainly uses a cold cathode fluorescent lamp (CCFLS) light source. Although these fluorescent lights are used to capture the effective illumination of the West, the serious lack of fluorescent tubes - ' g < strict disadvantages include the inclusion of inverter electronics, slow switching speed, and In the fluorescent tube memory, Gan. t Hazardous materials such as water. SUMMARY OF THE INVENTION The ',,, month system, components, and methods related thereto are provided.

In a face-to-face, a lighting combination includes: at least a solid state light emitting device; an emitting surface through which the light system is emitted; and a wavelength converting material that converts at least some of the light emitted by the solid state light emitting device The wavelength, the wavelength converting material has a first density per unit area of the emitting surface at the first location and a second density per unit area of the emitting surface at the second location, wherein the density is qualitatively different from the first Density, and wherein the density per unit area is defined by the average area of Ixl cm2. In another aspect, a lighting combination includes: a solid state lighting device 'a light guide' configured to receive light emitted by the solid state lighting device,

1024-9835-PF 5 200912478 The light guide has a length along which the received light propagates and an emission surface that is substantially parallel to the length of the light guide and through which the light is emitted; and a wavelength converting material having a plane of emission per unit area A density that increases substantially along the length of the light guide. In one aspect, a display includes: at least one solid state light emitting device; an emitting surface 'light is emitted therethrough; a wavelength converting material that converts wavelengths of at least some of the light emitted by the solid light emitting device, the wavelength converting material a first density per unit area of the emitting surface at the first location and a second density per unit area of the emitting surface at the second location, wherein the second density is substantially different from the first density, and wherein each The density per unit area is defined by an average area of 1 X1 cm2; and a liquid crystal layer arranged to receive light converted by at least some of the wavelengths emitted by the wavelength converting material. In one aspect, a display includes: at least one solid state light emitting device; a first wavelength converting material region that converts a wavelength of at least some of the light emitted by the solid state light emitting device to a first wavelength spectrum; a second wavelength converting material a region that converts a wavelength of at least some of the light emitted by the solid state light emitting device to a second wavelength spectrum that is different from the first wavelength spectrum; a liquid crystal layer comprising a first pixel light valve arranged to receive the first wavelength conversion At least some of the wavelength converted light emitted by the material and a second pixel light valve are arranged to receive at least some of the wavelength converted light emitted by the second wavelength converting material. In one aspect, a method of fabricating a lighting assembly, comprising: providing at least one solid state light emitting device, and providing a wavelength converting material that converts a wavelength of at least some of the light emitted by the solid state light emitting device, the wavelength converting material 1024- 9835-PF 6 200912478 having a first density per unit area of the emission surface at the first position and a second density per unit area of the emission surface at the first position, wherein the second density is substantially different from the first density And wherein the density per unit area is defined by an average area of lxl cm2. In one aspect, a lighting assembly includes: at least one solid state light emitting device, and at least one light guide comprising a light homogenizing region configured to receive light emitted by the solid state lighting device and including a light output boundary. The light homogenization region distributes light that is output on the boundary of the light output substantially uniformly. A wavelength converting material is disposed within at least a portion of the light homogenizing region. In another aspect, a lighting combination includes: at least one solid state light emitting device, and at least one light guide. The light guide includes a light homogenization area and a light core take-up area. The light homogenizing region is configured to receive light emitted by the solid state lighting device and includes a light output boundary, wherein the light homogenizing region substantially uniformly distributes light output on the light output boundary. The light extraction region is configured to receive light from a light output boundary of the light homogenization region. The light extraction region includes a wavelength converting material disposed in at least a portion of the light extraction region, and the light extraction region has a length along which the received light propagates and an emission surface through which the light is emitted. In one aspect, a liquid crystal display system includes: a liquid crystal display panel having an illumination area; at least one solid state light emitting device coupled with the liquid crystal display panel such that the light emitted by the solid state light emitting device illuminates the liquid crystal display panel; a wavelength converting material disposed to be remote from at least one solid state light emitting device, wherein the number of solid state light emitting devices of each m2 of the illumination region

1024-9835-PF 7 200912478 The target system is less than 100. In one aspect, a lighting combination includes: at least one solid state light emitting device; a light guide configured to receive light emitted by the solid state light emitting device, the light guide having a length along which the received light propagates and light being emitted therethrough An emitting surface; a wavelength converting material disposed in an optical path between the solid state light emitting device and the emitting surface of the light guide; and a wavelength filter disposed at an optical path between the solid light emitting device and the wavelength converting material in. In one aspect, a method of fabricating a lighting assembly, the method comprising: providing at least one solid state light emitting device; and providing at least one light guide comprising a light homogenizing region configured to receive light emitted by the solid state light emitting device and comprising a light output boundary, wherein the light homogenization region substantially uniformly distributes light output on the light wheel exit boundary, and wherein the light homogenization region includes a wavelength conversion material disposed at least a portion of the light homogenization region Inside.

Other aspects, embodiments, and features of the present invention will become apparent from the Detailed Description of the invention. The drawings are intended to be illustrative rather than to scale. Individual identical or substantially similar components are indicated by a single numeral or symbol in the different figures. For the sake of clarity, not every component is labeled in every figure. Each component of the two embodiments of the present invention is not shown for the description that is not required by those skilled in the art to understand the present invention. The application and patents hereby are hereby incorporated by reference in their entirety. In the event of a conflict, this specification and the definitions it contains are the main ones.

1024-9835-PF 8 200912478 [Embodiment] f The lighting combination described herein may include one or more solid state lighting devices, such as light emitting diodes and/or laser diodes. These solid-state lighting fixtures can be used as high-brightness small light sources for a variety of applications. Because solid state lighting devices are typically small light sources 'for applications requiring distributed illumination, light emitted by solid state lighting devices can be incorporated into the lighting combination, which can be via an enlarged light emitting surface that has substantially greater emission than the lighting device The surface area of the face (eg, greater than = 100 times, greater than about 500 times, greater than about 1 000 times, greater than about 2 times) is used to redirect direction and emit light. Some embodiments presented herein may accomplish reorientation and emission of light from one or more solid state lighting devices and may provide distributed illumination via an enlarged light emitting surface. In certain embodiments, some or all of the light from the illumination device may be wavelength converted # or all of the wavelength of light during the light reorientation and/or emission process may cause the light from the illumination combination to be re-lighted. Orientation and/or launching becomes easy. Some embodiments presented herein include a lighting combination having: a plurality of solid state lighting devices that emit primary light having a first wavelength spectrum; and a wavelength converting material (eg, phosphorus and/or Or a quantum dot) that converts the primary light into a secondary llght with a different wavelength spectrum (eg, downconverts the primary light (d_-...(1) to lower energy). As in this user 'Wavelength converting material refers to a material that absorbs some or substantially all of the primary light having a first wavelength spectrum (eg, blue light, grading) and emits light having a second different wavelength 诤 (eg, ' White light, yellow light, red light, green light, and/or blue light).

1024-9835-PF 9 200912478 Long conversion materials convert light from a shorter wavelength (higher energy) to a longer wavelength (lower energy). Phosphorus is a 2-part of the usual wavelength converting material, which can take the form of read particles. Quantum dots can also be used as wavelength conversions. In some embodiments presented herein, the wavelength converting material can have a different density at the same location. The dense sound of the wavelength conversion material per unit area is set to the number of wavelength conversion materials per averaging = product above and below the average area of ^. For example, in some embodiments, the average area may be on the emitting face of the illumination combination' and in this case the density is referred to as the density of the wavelength converting material per unit area of the emitting face. This flat = area does not include variations in the wavelength conversion material of the package level of the solid state light emitting device, for example, variations in the density of the luminescent material. At 1 first! The wavelength conversion center within the encapsulation layer will show a combination of illumination comprising one or more solid state illumination devices in accordance with an embodiment.昭# ..., ', σ 00a may include - the solid state lighting device may include - or a plurality of light emitting diodes and / or a laser diode. Although the illumination combination illustrated in the following is illuminated by one or more solid-state illumination devices, the illumination combination can be illuminated by one or more solid-state illumination devices. In some embodiments, a plurality of illumination combinations, similar to illumination 纟 and human η η η or two-dimensional 锸; can be arranged adjacent to each other (eg, along a side, such as a plane U, to form a combined light-emitting surface ( For example, a combination of illumination that can illuminate the combination of the adjacent light emitting surfaces of the surface and the surface of the human surface. The first emitting surface area of the combined δ C or combined (eg, ± σ ) may be greater than about or Equal to about 0_05m2, greater than or equal to about 〇lm2

1024-9835-PF 10 200912478 is greater than or equal to about 0.16 m2, greater than or equal to about. .5π]2, greater than or equal to about h). In some embodiments, the light emitting surface area of the illumination combination ranges between about 0.01 m2 and about 0.05, between about 5π]2 and about 、^, about O.im2 and about 0.5W. Between, or about 5m2 and about lm2. Light 152 (referred to as primary light) emitted by illumination device 150 can be transduced into light homogenization region 112, which can spatially distribute light such that light emitted through light exit boundary 113 (eg, light output surface) is in light The output boundary ιΐ3 has a substantially uniform intensity at different locations. The light homogenization region (1) may be a region in which light is not substantially captured along the entire length of the uniformized region ι2. A light homogenizing region 112 can include a light guide having a refractive index greater than the surrounding medium. The guide may include an edge configured to receive light emitted by the solid state, 15G. For example, the shank area ι2 may comprise some or all of the optically transparent:-made light guide made of a transparent plastic (e.g., leg, acryl) and/or glass. The light guide can have any suitable shape. In some implementations, the light guide has a flat shape (eg, a rectangular flat plate, a flat plate, a trapezoidal flat plate), a circular dome shape (eg, a child having a circular or elliptical shape), and/or the like. Suitable light guide shape. Homogenization Region The shape of an out boundary may be _ with the shape of the light guide. For example, a rectangular light guide comprising a two: = domain may cause the light output boundary to be a rectangular light guide 7 matrix cross section, as shown in Figure 1A.

The light 153 output from the homogenization 112 can be lightly coupled to the light extraction - "'where the light system is substantially captured along the light extraction region 114. The region 1U can include a light emitting surface (2), light The 102 series is launched by its 1024-983 5-PF 200912478. The emitting surface of the light extraction region can be entangled on one of the light 153 that is input into the well extraction region 114 as the ancient a The plate lifter region 1 1 4 may include a light scattering feature 'which may scatter light out through the light emitting face 12 。. In some embodiments the 'light operation zone' 14 may be configured and arranged to Light emission from the emitting surface 120 is caused to have a light intensity that is substantially uniform (eg, less than about 20% variation, less than about π, 7, and less than about 10% change) through the emitting surface 12 . Capture area 114 can be to ^

"Including the pilot. The light scattering features can be located in the conductive volume and/or on the upper and/or lower surface of the light guide. The number of scattering steals can vary along the length of the light guide so that the surface emission through the light emitting surface is substantially uniform along the length of the light guide. As shown by 胄ia, the light emitting surface 12G can be substantially parallel to the length of the light guide. In certain embodiments, the change in intensity of light emitted along the length of the light guide is less than about 2% (eg, less than about 15%, less than about 10%, less than about 5%). In some embodiments, the light extraction region 114 can comprise a portion or all of a light guide formed from an optically transparent material such as a glass or plastic material (e.g., acrylic, PMMA). In some embodiments, an interval i 04 may occur between the light output boundary 113 of the homogenization region 112 and the light extraction region 114. Due to total reflection (e.g., in the absence of scattering features and/or light guide taper), the spacing ι4 ensures that any light coupled into the light extraction region 114 is still confined in the light extraction region. Alternatively, the homogenization zone 112 and the extraction zone 114 may be in contact with each other. For example, the homogenization zone 〗 2 and the capture zone ^ 4 may all be part of a single light guide. Lighting combination 1 〇〇a may include wavelength conversion materials in one or more locations

1024-9835-PF 12 200912478 Materials, such as one or more phosphorus and / or - or quantum dots. The wavelength converting material can absorb and convert the primary light having the first wavelength, 仗°曰 to the secondary umbrella having a different wavelength than the first wavelength. In certain embodiments, the wavelength converting material can downconvert light having a higher energy (in your case (eg, shorter wavelength) to light having a lower energy (eg, longer turbidity, food, and length) For example, the wavelength converting material can be replaced with blue and/or ultraviolet light under the light of a longer wavelength, such as red, red, or blue light, or a combination thereof. The combination is produced by 'such as blue light and yellow light, or blue light, green light, and red light. One method of forming white light using a wavelength converting material may include down converting some of the blue main light into yellow light and secondary The yellow light and the unconverted primary blue light form white light. Another method of forming white light involves downconverting some of the dominant blue light into red and green light 'eg, using two or more different wavelength converting materials (eg, a red-emitting and a green-emitting wavelength converting material.) Another method of forming white light includes down-converting ultraviolet light into red, green, and blue light, for example, using two or more different wavelength converting materials. (eg, , work color illumination, a green illumination, and a blue illumination wavelength conversion material). In some embodiments, the wavelength conversion material is disposed within the homogenization region 112. Alternatively or additionally, The wavelength converting material can be disposed within the manipulation region 114. The presence of a wavelength converting material in the illumination combination can cause homogenization and/or extraction of light from the combined combination (eg, via the light emitting surface 1 2 〇) It becomes easy. The wavelength converting material can be placed in part or all of the homogenizing region 11 2 'so that some or all of the main light from the light emitting device 150 can be wavelength converted in the homogenizing region 112. 15〇 1024-9835-PF 13 200912478 Arranges upward absorption in a given direction and - 欠 丼 々 々 main light 152 can be retransmitted in any other direction by the probability of wavelength conversion material :::::

The process of wavelength conversion. ## M The small method of the tower makes it easy to homogenize the waiter. This can also be used to provide a length of the homogenized region of the substantially uniform light intensity at the light output boundary U3. The wave front intensity, the configuration of the skin length conversion material in the homogenization zone 112 can provide a combination of secondary and primary light from homogenization. 4112: The output of the person to light, or in some embodiments, the Bo County M丄丨 V. #^ long conversion material can be evenly distributed over the entire first homogenization area 丨2. In other embodiments, the wavelength conversion material = at least two positions of the f-region 112 have varying density: the density of the skin length conversion material at the light output boundary 1! 3 can be the density of the most iT wavelength conversion material in the light The output boundary 113 can be the most distance and can be changed (eg, reduced or increased) from the light output boundary (or exclusively as a function of distance from the light source). Seven or more different wavelength converting materials can be included in the lighting composition. In some embodiments, the wavelength conversion material includes a first wavelength conversion material 1 that emits secondary light having a first dominant wavelength, and a second wavelength conversion class that emits a second primary having a different wavelength than the first dominant wavelength. The wavelength of the second, light. The wavelength converting material can be disposed in an optical path between the solid state lighting device and the second wavelength converting material. The first dominant wavelength may be greater than the first dominant wavelength. In other embodiments, the first dominant wavelength may be less than the first long crowmer may be disposed in the learning path between the first and second; skin length turns, and configured to reflect emission by the second wavelength converting material of

1024-9835-PF 14 200912478 Light JL transmits light emitted by the first wavelength converting material and the solid state light emitting device. The V-switching material, or additionally, the wavelength converting material can be placed in the optical operating region 114. p is in the middle or the whole. Thus, the primary light traveling in the optical manipulation region 114 can be wavelength converted and secondary light can be generated and captured via the emission surface 120. The primary light traveling through the optical manipulation region ι 4 is also scattered by the wavelength converting material in the light extraction region 114 such that some of the primary light can pass through the emitting surface 12 through such a mechanism. Was taken. The light output by the illumination combination may include some primary light and secondary light. Alternatively, the light output by the illumination combination can include secondary light without primary light. In some embodiments, the light output by the illumination combination is white light, which may be formed by combining primary light (e.g., blue light) and secondary light (e.g., yellow light). Alternatively, the light output by the illumination combination is white light that includes secondary light and does not include any significant amount of primary light (e.g., U V light). Figure 1B is a cross-sectional view of an illumination assembly 1_ including a tapered extraction region, in accordance with an embodiment. The taper can be provided by a wedge shaped light guide. The light guide can include an "edge" configured to receive light emitted by the solid state lighting device. The tapered operating region m may be such that the light blasting mechanism can be used alone or via a combination of scattering features (eg, surface features such as prisms and/or lenses, such as having a suppression of total reflection in the light guide) A volume characteristic of a region of refractive index different from the surrounding photoconductive material) to provide light extraction through the light emitting surface 120. It should be understood that the lighting combination can include a type of J or a plurality of reflectors. Back side reflection

The device can be disposed on the back side of the light extraction region (eg, relative to the light emitting surface 1024-9835-PF 15 200912478 120) and can be scattered downward (eg, reflected back through the light extraction feature). The reflected light can be captured via the light emitting surface 12

In some embodiments, the lighting combination can be used as a backlight unit such as (4). This embodiment is illustrated in the cross-sectional view of Figure lc. One or more of the layers 190 of the display 100c can be illuminated by the illumination combination. Layer 19 can be packaged = a liquid crystal light valve layer on the light emitting surface 12G (corresponding to the = photogate pixel of the display). Thus, the illumination combination can be used as the backlight group I of the liquid crystal display layer and the light 102 from the illumination combination can be illuminated to the liquid crystal display layer. ,. Other layers commonly used in LCDs, such as diffusion layers, brightness enhancing films (BEF), and/or color filters, can be placed on the light emitting surface of the illumination combination. In addition to display backlighting, lighting combinations can be used for illumination, including but not limited to signage percent, outdoor lighting, interior lighting, automotive lighting, and other lighting applications. For a typical illumination combination, the illumination combination can be used as is or can have other layers disposed on the combined emission surface, for example, one or more layers can be placed on the combination to change the illumination characteristics. For example, a textured or patterned layer or optical lens (e.g., a polymer and/or glass component) can be placed in combination. In some embodiments, a liquid crystal display system can include a small number of high light output power illumination devices that provide illumination for a large display area. The liquid crystal display may include a liquid crystal display panel having an illumination area and at least one solid state light emitting device combined with the liquid crystal display panel such that light emitted from the solid state light emitting device illuminates the liquid crystal display panel. The display can include a wavelength converting material disposed away from the solid state lighting device (e.g., in the light homogenizing region 丨12 and/or the light capturing region 114). In some embodiments, each m2 of the illumination area

The number of sets of 1024-9835-PF 16 200912478 is less than (10), as follows - in some embodiments, the age of the decimals is small. The number of j-first rounds of power is used to illuminate the lighting combination (for example, the combination of lights): In some embodiments, the number of units per unit::area of the illumination surface of the illumination combination is less than or equal to about 50 per "early", less than (four) per "(10), small = ge, etc." Less than or equal to every 2 A sheep at the mother m2 m about 25, less than or equal to about m2, such as the emission of the illumination combination and M-2 2). For example, the number of illuminators per m of the face can be recognized to 100. Between, between 25 and the eye; between 5 and υ〇, or between 50 and 100 „ between the small number of maternal areas. Throughout, it can be designed to break through the surface area of the day's granules (for example, 趴 趴 4_, greater than about 1 〇 2, greater than about . ^ ^ „ about 30 rewards, greater than about 100_2) The significant amount x of light produced by the hairpin is discussed further below. The number of light-emitting devices of the parent lighting combination is, for example, less than or equal to i. The second is dedicated to 12... 箄 (8) less willing to secondary to 6 , less than or equal to 4, less than the formula is specific to 2). In some embodiments, single _ hair / Ming combination. ',,, the whole according to the lighting of some lighting combinations #count, the following, ~ number has been provided above. For ..^ by Tian made - a light-emitting device: a luminous 曰 # two or more combined hair 氺 θ 日 杻, ] poor first day granules, partially packaged all packaged The illuminating 曰# , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Red illuminating grain. #壮止,, 忐装置 is a device that emits a single color of light. For example, the illuminating bag is especially straightforward. Green, blue, yellow,

1024-9S35-PF 17 200912478 and / or cyan lighting device. In the example of 1 Λ , , , , , , , 妒 妒 妒 妒 妒 妒 妒 妒 妒 妒 妒 妒 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射 发射In the case of one, /, and permeation, the illuminating device can be placed in a red, green, blue, and blue-green hair, and in other embodiments, it can be a red-green-blue - 軎 廿 ^ 展 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝 蓝The first illumination, such as the one described herein, is used to perform light homogenization and or optical extraction. Figure 2 is a green display for simultaneously homogenizing light and wavelengths according to an embodiment. Flowchart 2QQa of the conversion method. This method can be performed by - Zhaoming Electron, which can include - wavelength conversion (4) in the light homogenization region, as shown in Figs. 1A - C, which is shown in Fig. 1A - C. This method can begin by generating primary light (202a). The primary light can be produced by m At ax, in particular by a solid-state illuminating device, such as - or a plurality of light-emitting diodes and/or laser diodes. The primary light can be spatially homogenized and some or substantially all of the primary light can be wavelength converted to secondary light (action 2Q4a). Wavelength conversion can be performed by a wavelength converting material such as one or more phosphors and/or one or more types of quantum dots. Because the process of wavelength conversion can include the absorption of primary light by the wavelength converting material and the equal emission of secondary light in any direction of emission (eg, down conversion to lower energy), the space can be used to use unused wavelength converting materials. The k-short uniformization length is completed. This method can continue to take secondary light and optionally capture some or all of the primary light that has not been converted (action 2〇6a). Light-harvesting a light-emitting surface of a light extraction region that can be combined via illumination

1024-9835-PF 18 200912478 Occurred. The light emitting surface can be a surface of the light guide, such as the top surface of a flat light guide, as previously described. In some embodiments, wavelength conversion occurs only in the homogenization region and not in the optical manipulation region. 2B is a flow chart 200b showing a method for simultaneously converting and capturing light wavelengths, in accordance with an embodiment. This method can be performed by a combination of illuminations that can include - a wavelength converting material in the region of operation, such as the illumination combination shown in Figures U-C. This method can generate primary light (action 2 squeak start: f primary light can be generated by - solid state light emitting device, such as one or more light emitting diodes and/or laser diodes. Then 'the main light can be spatially homogeneous (Action 204b): The method can continue to simultaneously convert at least some of the main light wavelengths into secondary light and #| take the secondary light and the buryable n && amp and Ί select the ground #| take any unconverted Primary light: some or all. Wavelength conversion can be performed by wavelength converting materials, such as two or one or more types of quantum dots. In some embodiments, for example, particles and/or smoke can be absorbed. Irradiation 丄,—Stop and/or scatter some of the light (eg, σ, primary or secondary light) that is incident on it. The wavelength conversion material absorbs the primary light and converts the light at any of the hairs (for example, Down conversion to lower energy) = phase camera rate emission on the wavelength conversion material in the secondary domain is taken from the light extraction area. Therefore, the law county Zhao she ^ must be irradiated first, so that it can be followed by Phase one! Two wavelength conversion and light scattering. This side is not _ …one of

1024-9835-PF 19 200912478 is the surface of the light guide, such as the top surface of a flat light guide. In some embodiments, wavelength conversion occurs only in the light extraction region and not in the homogenization region. Fig. 3A is a cross-sectional view of a lighting combination 3〇〇 having different densities of wavelength conversion materials for at least two locations, according to an embodiment. By arranging the wavelength converting material at different densities at different positions, the percentage of the main light that is converted to the secondary light at different positions can be unacceptable. Spatial variations in the percentage of primary light converted at different locations and skin wavelengths can be used to output light of the desired intensity at different locations on the light emitting surface 120. For example, the wavelength conversion material density can be higher at locations where the primary light intensity is lower (compared to locations with higher primary light intensities). This configuration can be used to compensate for the spatial variation of the primary light intensity of the mussels along the light extraction region 114 such that the amount of secondary light generated and output at different locations along the light emitting surface 120 is substantially uniform. Furthermore, the wavelength converting material can be used as a light scattering feature that can scatter the primary light out through the face 120. Thus, spatial variations in the density of the wavelength converting material can also cause the primary light to be output from the light emitting surface 120 throughout The surface is substantially uniform. The density of the wavelength converting material per unit area of the light-emitting surface 12 can vary greatly at different locations (e.g., at least a 30% change, at least a 60% change, at least a cut change). For example, the density of the wavelength converting material per unit area of the light emitting surface can be varied as a function of the distance from the solid state lighting device 150. The density of the wavelength converting material can be in the optical operation area, household, and. Same position change. Alternatively, or in addition, 4 degrees of the wavelength converting material may vary at different locations of the light homogenizing region 112. For example, the figure

1024-9835-PF 20 200912478 The position 172 and 174 of the 3Α indicate the two opposite ends of the light extraction, ^^ Λ 114, where the wavelength of the wavelength conversion material of the mother unit emission area can be in phase. In some embodiments, the density of the wavelength converting material can be substantially increased further away from solid state light sources such as solid state lighting device 150 (e.g., monotonically). In some implementations, the density of the wavelength converting material is such that the density is substantially greater than the position closer to the solid state lighting device 150 (e.g., greater than about 3 (10), at a position that is further away from the solid state illumination ... 5 进. About 60% larger, about 1% larger). Figure 3 is a graph of the density of a wavelength converting material versus the distance from a light source, in accordance with an embodiment. Curve 1()1 represents the wavelength conversion material density (eg, each early volume, area, or length) as a function of distance from the source, in the illustrated graph, the wavelength conversion material density is associated with the solid state light emitting device Increase by 1 50 distance. For the illustrated example, the change in density of the wavelength converting material can be expressed in terms of the distance along the optical operating region of $114. For example, the leftmost I of the curve ji, the portion of the edge may be combined with the density of the position 172 at the light extraction region 114 and the rightmost portion of the curve 101 may be at the position 1 74 of the light extraction region 丨丨4. The density is combined. In some embodiments, the wavelength conversion material density is at a location that is illuminated at a higher intensity from light from the solid state light emitting device 150 (eg, primary light) than at a light from a solid state light emitting device (eg, primary light) The position of the lower intensity illumination is low. For a bright combination having a plurality of solid state light emitting devices, the wavelength converting material is illuminated at a higher intensity with light from a plurality of solid state light emitting devices (eg, primary light) than at a light from a complex solid light emitting device (eg, primarily Light) the lower intensity of the illuminated position

1024-9835-PF 21 200912478 can have a lower density. In some embodiments, the spatial variation in density of the wavelength converting material can be used to facilitate uniform spatial light emission through the light emitting face 12 of the light extraction region 114. The intensity of the secondary light and/or primary light emitted and/or scattered by the wavelength converting material may vary through the light extraction region ι 4 by less than about 15%, less than about 5%, and less than about 5%. For example, in the case where the change in light intensity through the light manipulation region is less than about 1%, the first density at the first position of the light extraction region 114 and the second position at the light extraction region 114 The second density may be such that the wavelength converted light intensity (eg, secondary light intensity) from the first location is at least about 9% and not greater than the wavelength converted light intensity (eg, secondary light intensity) from the second location. The intensity of the wavelength converted light from the second location is about 11%. In some embodiments, the density will vary inversely depending on the dominant light intensity at different locations along the light extraction region 114. For example, the second intensity can be greater than or equal to about 2 times (eg, greater than or equal to about 3 times, greater than or equal to about 4 times) of the first intensity, which can compensate for a reduction of about 50% of the primary light to The first and second locations of the capture region i 产生 produce secondary light of substantially equal intensity. As should be appreciated, the first and second positions may be opposite ends of the light extraction region 丨 14 (e.g., positions 1 72 and 1 74), although the embodiments are not limited thereto. 4 is a graph showing different densities of wavelength converting materials (eg, per unit area over the average area of ixicm2 on the emitting surface 120) caused by different microscopic densities of wavelength converting materials for at least two locations, in accordance with an embodiment. A cross-sectional view of the lighting assembly 400. The first location 172 can have a first density of the wavelength converting material 117 and the second location 丨 74 can have a wavelength conversion

1024-9835-PF 22 200912478 The second density of material m. The second density may be substantially different from the first density due to the different microscopic densities of the wavelength converting materials at the first and second locations. As described herein, 'the wavelength converting material can include one or more continuation and/or quantum dots' and the microdensity can be one length that is much less than the average length used to calculate the density (eg, an area much smaller than ixlcm2) The number of phosphorus molecules and/or quantum dots per unit volume. As shown in Fig. 4, the wavelength converting material 117 may be interspersed throughout the light extraction region ι 4 or a portion of the light extraction region 114. In some embodiments, the microdensity of the wavelength converting material (1) can vary along the length of the light extraction region 114 (e.g., monotonically increase, monotonically decrease). 5 is an illumination of different densities of wavelength converting materials (eg, per unit area over an average area of 1 XW on the emitting surface 120) caused by different thicknesses of wavelength converting materials for at least two locations, according to an embodiment. A combined profile view. The wavelength converting material zone or "6 may comprise a layer of wavelength converting material 'which may be in the host material (eg, polymer, glass including wavelength converting materials (eg, phosphorus and/or quantum dot particles). At least in part due to The different thicknesses of the wavelength conversion material regions 116 of the first position Π2 and the second position m, the density of the wavelength conversion material per unit area of the light emission s 12() of the Hth 172 may be substantially different from the second position Density. In some embodiments, the wavelength conversion material zone illusion (eg, layer) can be a portion of the light extraction region 114. When the light manipulation region ι 4 includes a light guide 11 ,, the wavelength conversion material region 116 (eg, , the layer) can be disposed over the entire light guide 11G (eg, 'on the light emission Φ 121 of the light guide 110), disposed below the light guide 110 (eg, in relation to light emission relative to the light guide)

1024-9835-PF 23 200912478 On the back side of face i21), and/or buried in light guide 110. Other methods of varying the density of the wavelength converting material (e.g., per unit area over the average area of 1 x 1 cm2 on the emitting surface 120) are possible, for example, in some embodiments, at least in part due to differences in the area of the complex wavelength converting material. Spatial arrangement and/or size, the wavelength converting material can be a plurality of wavelength converting material regions of portion t (eg, 'each region having a size less than about 50 U meters, less than about 1 〇〇 micron, or less than about 5 (10) microns) and wavelength The density of the conversion material (eg, lxlcm on the emission © 12, average: per unit area on the product) can vary from one location to another. In a second embodiment, the wavelength converting material region comprises dots, squares, rectangles, triangles, hexagons, stripes, and/or any other shape, which may include a wavelength converting material (eg, interspersed in the host material and/or Or on). Figure 6 is a diagram showing wavelength conversion of a different spatial arrangement of a plurality of wavelength converting material regions 116 for at least two locations according to an embodiment (e.g., an average area of lxlcm2 on the emitting surface 12A). The upper view of the lighting group 纟6〇〇 of different density per unit area). The wave material region 116 may include a wavelength converting material (e.g., phosphorus and/or quantum dot particles) in the host material enthalpy, body material (e.g., polymer, glass). In the illuminated illumination assembly 600, the wavelength converting material region ι6 can be point, square, stripe, and/or any other suitable shape. The complex wavelength converting material region 16 can have a substantially similar shape. The wavelength converting material regions 116 can be spatially arranged to have different nearest neighbor distances as a function of the position of the aperture:, the domain 114. In some embodiments, the wavelength conversion material region 16 can be arranged in a periodic or non-circumferential manner.

1024-9835-PF 24 200912478 period pattern. Examples of such patterns are described in further detail below. Figure 7 is a top plan view of a different density: degree illumination combination 700 of wavelength converting material resulting from at least two locations having different sizes of a plurality of skin length transition material regions 1 1 β, according to an embodiment. As shown, the size of the wavelength converting material region 161 may vary depending on the position along the light capturing region 丨丨4 (eg, as a function of the distance from the light emitting device 15A), and the wavelength converting material region 116 The (central) spatial arrangement can be the same for all locations. It will be appreciated that the density of the wavelength converting material (e.g., per unit area over the average area of lxlcra2 on the emitting surface 120) may differ at different locations for one or more of the above reasons and/or other reasons. 8A-B are each included in a light guide according to an embodiment! 】 The cross-sectional view and top view of the illumination combination of the wavelength conversion material on the light-emitting surface 121 of 〇. The light guide 110 can be configured to receive light 1521 emitted by the solid state light emitting device 15A. The lead 110 can include a side edge that is configured to receive light 152 emitted by the solid state light emitting device 150. The light guide 11 can include a length along which the received light propagates. As previously described, light from the illumination device i5X can be spatially homogenized in the light homogenization region 22. The homogenized light can be lightly coupled to the light extraction region 1 1 4 .

The light guide 110 may include a light emitting surface 121. In some embodiments, the wavelength converting material region u 6 can be disposed on the light emitting surface of the light guiding device. It is known that the wavelength converting material region 丨丨6 can emit secondary light (for example, wavelength converted light) and may scatter. The main light that illuminates the wavelength conversion material feature ^, the wavelength conversion material region U6 and the light guide u can be considered as part of the light extraction regions 14 of the combination 800. Thus, the light emitting surface of the illumination group tone 1024-9835-PF 25 200912478 800 can include the exposed face of the wavelength conversion material feature 116 and the exposed face of the light guide 110. Due to the total reflection of the surface of the light guide 110, the light coupled into the capture region 114 may partially or completely travel throughout and remain confined to the light guide 1&0. Alternatively, or in addition, the optical confinement within the light guide 11 can be caused by a reflective area of the surface of the light f 110 that is placed in contact with at least a portion. For example, the reflective layer 126 can be disposed on the edge of the light guide ι relative to the light entry edge 122. A reflector 124 can be disposed below the back of the light guide 11A. The reflective layer can be in direct contact with the light guide or can be separated from the light guide via a spacer. The reflective layer can be formed of any suitable material, including but not limited to, a reflective material (eg, inscriptions, silver, and/or combinations thereof), and can be specular and/or diffuse, due to the suppression of total reflection, which may be Light scattering due to light scattering features such as convex, concave, convex, concave, refractive index changes, thickening of the light guide along the length of the light guide (not shown), due to the area 116 The interaction of the wavelength conversion material results in scattering of primary or secondary light, and/or through the emission of wavelength converted light (eg, 'secondary light') of the wavelength converting material in region 116, traveling within . The light can be emitted. In some embodiments, the scattering may be due only to interaction with the wavelength converting material and no need to be present. In some embodiments t, the scattering (tetra) ι ΐ 8 may appear on the #面面面面面面面面面面#. 2. In some embodiments, the wavelength conversion material can vary along the length of the light guide 1 and the density per unit area of the surface. In some embodiments,

1024-9835-PF 26 200912478 The wavelength converting material has a density per unit area of the emitting surface which increases substantially along the length of the light guide. Thus, the density generally increases along the length of the light guide. However, there may be a change in the tendency of the intensity of hyper and k. The wavelength converting material features 116 can have any desired shape (e.g., 'stripe, dot, square) and can be aligned corresponding to the nearest neighboring distance along the length of the light guide 110. In the illuminated illumination combination shown in Figures 8A-B, the wavelength conversion regions i J 6 are in the form of stripes and may be spaced closer to each other and away from the illumination device 50. The wavelength converting material region 116 can include a layer that is disposed at least partially or completely on the emitting surface of the light guide 110. The wavelength converting material region 丨i 6 may be partially (or completely) disposed to contact the light emitting face 121 of the light guide 110. Alternatively, or in addition, the wavelength converting material can be disposed within and/or under the light guide. The density of the wavelength converting material per unit area of the emitting surface may vary monotonically corresponding to the distance along the length of the light guide (e.g., with respect to the distance from the light emitting device). As previously mentioned, at least in part due to the varying thickness of the wavelength converting material, the thickness of the complex wavelength converting material region 116, the spatial arrangement of the variations, and/or the size, the density of the wavelength converting material per unit area of the emitting surface Variety. In the illuminated combination of Fig. 8Α_β, the density varies along the length of the light guide due to the varying distance between the wavelength converting material regions 116 (e.g., the distance between the stripes including the wavelength converting material). Lighting assembly 800 can include one or more wavelength filters. Wavelength filter can be a reflective filter that reflects light in a certain wavelength range and transmits light having a wavelength outside the range, and/or the wavelength filter can absorb

024-9835-PF 27 200912478 An optical device that absorbs light in a certain wavelength range and transmits light having a wavelength outside the range. The wavelength filter can include a short pass, a long pass filter, or a combination thereof. In some embodiments, the wavelength filter can be disposed in an optical path between the solid state light emitting device and the wavelength converting material. This filter prevents any wavelength converted light from entering the illuminator or leaking through exposed areas of the light input edge. For example 'Lighting combination 8. The ◦ may include a wavelength filter 129 that is arranged on the input edge 122 of the light 110. The wavelength filter 129 can be configured such that primary light (eg, blue and/or uv light) emitted by the illumination device 150 can be transmitted and reflect secondary light emitted by the wavelength converting material in the region 116 (eg, , the light that was down converted). Thus, the wavelength filter 129 prevents secondary light from leaking out of the light guide 11 via the edge 122. In some embodiments, a wavelength filter can be placed in the optical path prior to the output of the wavelength converting material and illumination combination. This filter prevents any major light from leaking out of the lighting combination and is especially useful when the primary light is uv light. The illumination assembly 80" includes such a wavelength filter 128 that can be disposed on the emitting surface of the light extraction region 114. In some embodiments, the light i 〇 2 emitted by the illumination combination 8 可 can include a mixture of secondary and primary light. In other embodiments, the light 102 emitted by the illumination combination may substantially only include secondary light. For example, if there is no wavelength filter state 128, the pupil 2 emitted by the illumination combination can include a combination of primary and secondary light (eg, white light formed by a combination of different wavelengths, such as blue and yellow light, or Blu-ray 'green light and red light'. Figure 9 is a view including a back surface of a light guide 根据 according to an embodiment

1024-9835-PF 28 200912478 Cross-sectional view of the illumination combination of the wavelength conversion material 9〇〇. In the illuminated lighting combination _t' there may be no light #| taking features. The light guide iiq may include a light emitting surface 121 with respect to the light guide no - ", and the wavelength converting material region 116 may be partially (or completely) disposed under the back surface. The wavelength converting material region $116 may be partially (or Completely) to contact: $ face of the lead 11. Alternatively, or in addition, a wavelength converting material can be disposed within the light guide 110. The wavelength converting material region 116 can be configured to flank the reflector 124, which aids Any heat generated by the wavelength converting material is extracted. The backside reflector 124 can be thermally coupled to a heat sink to provide heat dissipation. Figure 1 is a light emitting surface disposed on a light guide according to an embodiment. A cross-sectional view of the illumination combination of the wavelength conversion material on 121. The wavelength filter 132 can be disposed between the light emitting surface 121 of the light guide 11A and the wavelength conversion material region 116. The skin length filter 132 T is Configuring to transmit the desired light and reflect the secondary light emitted by the wavelength converting material. Thus, the wavelength filter 1 32 can reflect the secondary light emitted by the wavelength converting material in the region i 丨 6 to prevent secondary light from entering Light guide 1 1 〇 Ο Figure UA is a top view of an illumination combination i 丨〇〇 a comprising a plurality of wavelength converting material regions 116 according to an embodiment. The wavelength converting material region 丄Η may correspond to a change in different locations along the light guide ii ο The nearest neighbors are arranged to provide varying degrees of wavelength conversion material along the light extraction region 114. The wavelength converting material region 116 may have any shape, for example, the region may include dots, as shown in Figure 1 Additionally or alternatively, the thickness and/or size of the wavelength converting material region 丨6 may vary in different locations of the light extraction region 114. For example, the region 丨16 is closer to the illuminating device 15

1024-9835-PF 29 200912478 Thicker. Figure 11B is a top view of a combination of a wavelength conversion material according to an embodiment. The combination of illumination and illumination may include a plurality of wavelength-turned regions (eg, 'points 116a-c) that may be arranged to be aligned and placed on a plurality of display pixel light valves (in liquid layer) for individual illumination Pixel light valve. For example, the 'display pixel light valve' may be a portion of the liquid crystal layer (not shown for clarity) placed on the emitting surface 121 of the illumination assembly 11〇〇b, as shown and described in the ® 1C. The size of each wavelength converting material region (e.g., points 116a-c) may be approximately the size between the display pixel lights.

V Different wavelength conversion materials (for example, red luminescent phosphors, green luminescent discs, blue illuminators can be placed in different wavelength converting material regions (eg, point 11 6a-c) 'making different pixel light valves available in different colors Light illumination. This combination illuminates the color filter of the LCD towel to improve the efficiency of the LCD system. In some such combinations, the illumination device can emit primary light from the liver, which can be in different regions (eg, Different wavelength conversion material conversions in point). In some such combinations, the illumination device can emit blue primary light. When blue main light is used, the red and green emission wavelength conversion materials can be used to illuminate red, respectively. And a green pixel light valve, and the blue pixel light valve can be illuminated by primary light (eg, it can be locally captured using the light scattering features of the light guide 110 aligned with the blue pixel light valve). Figure 1 2A-B An illumination group comprising wavelength converting materials having spatially varying densities (eg, per unit area over an average area of 1 x 1 cm 2 on a combined emitting surface), respectively, according to an embodiment. And a cross-sectional view of FIG 12〇〇 The plural light emitting device 150 may be arranged to emit light into the light guide

1024-9835-PF 30 200912478 One or more edges of 110. The wavelength conversion material density (e.g., per unit area over the average area of Ixlcm2 on the combined emitting surface) can vary in two or one dimensions. Figure 12B illustrates an embodiment in which the spatial variation of the density of the wavelength converting material per unit area = can vary in the defined emitting surface 12 丨 = dimension. The density of the wavelength converting material per unit area can be configured to be higher in the portion of the light guide 11G having a lower main light intensity. For example, when the primary light intensity is lower in the central portion 181 and the corner portion 182 of the light guide 110, the long transition material may have a higher density in those portions of the light guide 110 (as seen from the top view in FIG. The darker shaded portion shows that this inverse relationship allows for a reduction in the primary light intensity compensation along the light guide 11, such that the light 1 〇 2 emitted by the illumination combination is substantially uniform over the entire emission surface. 3 is a top view of an illumination assembly comprising a wavelength conversion material having a spatially varying density (eg, per unit area over an average area of 1 x 1 cm2 on the emission surface) in accordance with an embodiment. In addition to the complex illumination device 1 50 can emit light into the corner portion of the light guide, and the illumination combination 1300 is similar to the illumination combination 1 2 0 〇. Compared with the combination 1200 of Figure 12, this arrangement can make the main light within the light guide 11 The light intensity is more spatially uniform. Conversely, in the case where it is required to emit spatially uniform light from the illumination combination, the density of the wavelength conversion material per square unit area only has to be in the core portion 181 of the light guide. High values. In some embodiments, some or all of the edges of the light guide (not coupled to light from the illumination device) may be plated with a reflective material (eg, a metal such as aluminum and/or silver) to prevent any light ( For example, the main

1024-9835-PF 31 200912478 and/or secondary light) leaks from the light guide. 1AA-B are cross-sectional and top views, respectively, of a lighting assembly 丨40〇 including a wavelength converting material and one or more wavelength filters, in accordance with an embodiment. The illumination combination 140 can include one or more solid state lighting devices 15 〇. The light guide 110 can be configured to receive primary light 152' emitted by the solid state light emitting device 105, wherein the light guide 110 can have a length along which light propagates and an emitting surface 121 through which light is emitted. A wavelength converting material that produces secondary light 1 5 3 can be disposed in the optical path between the solid state light emitting device 丨5 〇 and the emitting surface 126 of the light guide. One or more wavelength filters (e.g., filter 129) can be disposed in the optical path between the solid state light emitting device 150 and the wavelength converting material. The wavelength filter 1 29 can be configured to transmit the primary light emitted by the illumination device 15 5 and reflect the secondary light (e.g., wavelength converted light). Thus, the wavelength filter 129 may include a t-pass wavelength filter 'optical' that is (directly) disposed on the light input side 122 of the light homogenization region, wherein the short pass wavelength filter and the optical device are

It is configured to transmit light from the solid state lighting device i 15Q and reflect wavelength converted light from the wavelength converting material. Thus, the 'wavelength filter' 129 prevents wavelength-converted light that is emitted backward or backscattered from leaking from the homogenization region 112. The illumination assembly 1400 can include a light homogenization of the solid light illumination device 150 and the emission path of the light guide ho. The wavelength converting material may be disposed in the same manner as the light, and the optical path quality is provided in the wheel region 11 2 of the homogenized region, which is disposed inside the vertical domain, which is disposed between the faces 121 Within the region 11 2, if placed at the edge of the homogenization zone into or out of the output.

1024-9835-PF 32 200912478 The wavelength converting material can be disposed in the homogenized region ι2 to the entire homogenizing region 112. Alternatively, or in addition to two: the conversion material can be placed in the light homogenization region - or more =: in the homogenization region of the light input edge 122 and / or light output edge in some embodiments _, wavelength conversion material The density can vary from location to area 112. For example, the twist of the wavelength converting material may be further away from the light input edge 1 22 .

In some embodiments, illumination assembly 14A can include a wavelength filter 128 (e.g., a long pass wavelength filter) on the light output side of light homogenization region 112. The wavelength filter 128 can be configured to transmit wavelength converted light (e.g., secondary light) and reflect the primary light emitted by the solid state = 150. The multiple wavelength filters can be arranged in a series configuration in which the light output of one wavelength filter can be used as the light input of another wavelength filter. The wavelength converting material can be disposed in the optical path between the light output side of the wavelength filter and the other wavelength (the light input side of the filter. The wavelength converting material can be different in different regions (eg, wavelength conversion) Different wavelength ranges and/or secondary light of different wavelengths. For example, different wavelength converting materials can be connected in series in the optical path. In some embodiments, lower energy (eg, longer wavelength) light Light that can be generated by a wavelength converting material that is closer to the light emitting device 15 turns and that is of higher energy (eg, shorter wavelength) can be successfully produced by one or more different wavelength converting materials that are successively aligned thereafter. In other embodiments Medium 'high energy (eg, 'short wavelength') light may be produced by a wavelength conversion material that is closer to the light emitting device 150 and has lower energy (eg, longer wavelength)

1024-9835-PF 33 200912478 can be successfully produced by successively arranging - or a plurality of different wavelength converting materials. Different wavelength converting materials may be isolated from each other by - or a plurality of wavelength multiplexers. The wavelength filter can be configured to prevent secondary light from a given wavelength converting material from entering a different wavelength converting material that is placed closer to the light emitting device. For example, the illumination assembly 14(10) can include a second short pass wavelength filter (other than the wavelength chopper 129) and a second wavelength conversion material different from the first wavelength material. A second short pass filter can be disposed in the optical path between the wavelength converting material and the second wavelength converting material, and the second short pass wavelength chopper can be configured to transmit light 7 from the solid state lighting device to transmit The wavelength of the wavelength converting material converts light and reflects wavelength converted light from the second wavelength converting material. In some embodiments, illumination assembly 1 400 can include one or more reflective surfaces 125 at one or more surfaces and/or edges of light homogenization region 114. The reflective surface 125 prevents light (eg, primary and/or secondary light) from being homogenized (the edges and/or surfaces of the region 112 are leaking out. Thus, in this embodiment, the light can be substantially only from the light homogenized region The light output edge 113 is not output via other edges or surfaces of the light uniformized area 112.

15A-B are respectively a plan view and a top view of a combination of a backlight wavelength conversion region 116, according to an embodiment. The lighting combination 1 may include or include a plurality of light emitting devices 15A including a light emitting surface. The wavelength converting material 116 can be disposed on the light emitting surface of the solid state light emitting device i 5 . In this arrangement, the illumination package i 1 50 can provide backlighting illumination of the wavelength conversion material 116 directly with the primary light 152 emitted by the illumination device 15A. 1024-9835-PF 34 200912478 - or a plurality of solid state lighting devices 150 can be placed on a first plane. Two-: In an embodiment, the solid state lighting device 15 is comprised of a thermal management system that can include a thermally conductive plane 159 (e.g., a metal planar layer). Waves: The exchange material 116 can be disposed on the emitting surface of the light emitting device 15A, and in some examples, can be arranged on a second + surface that is substantially parallel to the first plane, and the light emitting devices 15 can be arranged On the first plane. &quot;In one embodiment&apos; the wavelength converting material Π6 may have a density in different bits, e.g., at different locations in the second plane, as well as per unit area. For example, the first and second positions of the wavelength converting material 116 may be located at different positions in the second plane of the plane: the plane, and the illuminating surface may be set on the first plane. The first position can be disposed on the light-emitting surface 38 of the light-emitting device and the first position can be disposed on the area between the light-emitting surfaces 38 of the light-emitting device (4). The density of the wavelength converting material in the first region can be = the density of the wavelength converting material in the first region. Such an arrangement can compensate for the lower primary light intensity in the region intermediate the illumination device 150 (eg, not directly above the dilation region 38 of the illumination device) for the entire illumination combination's emission surface (eg, second) The plane is provided with a substantially similar, desired light intensity. Generally, in some embodiments, the wavelength converting material 116 may have a density per unit area that is lower than the position illuminated at the main light of the lower intensity at a position illuminated by the primary light of the relatively strong intensity. In some embodiments t, illumination combination 1500 can include one or more wavelength filters. A wavelength filter 129 can be disposed between the light emitting device 150 and the wavelength converting material 116. The wavelength filter </ RTI> 29 can include a short pass filter configured to transmit primary light from the illuminating device and reflect by the region

1024-9835-PF 35 200912478 11 The secondary light produced by the wavelength converting material. In some embodiments, the wavelength filter 128 can be disposed on the emitting surface of the wavelength converting material 116. The wavelength filter 1 28 can include a long pass filter configured to transmit secondary light generated by the wavelength converting material in the region 116 and to reflect primary light emitted by the light emitting device 150. This arrangement may be advantageous when the primary light is ultraviolet light and the secondary light is visible light. In these arrangements, it may be desirable to output only secondary visible light (eg, stop 2) and reflect the primary light of the ultraviolet light (eg, using filter, lighter 128) back without exposing the viewer of the illumination combination to Ultraviolet light. Optionally, the light m卩 comprises a mixture of primary and secondary light, for example, a mixture of blue primary light and secondary light such as yellow, red, and/or green light. This arrangement can be used to produce white light. ...the method of (5) can be used to make the illumination, combination described herein. A method of forming a wavelength converting material region such as printing, molding (e.g., injection molding), mineral film, spray coating, and/or pressing can be used. For example, a printing process (e.g., an inkjet printing process) can be used to generate a wavelength = + for each unit area of the emitting surface having a ==... succession. The printer ink can include a solution that includes a wavelength conversion axis such as ❹/or quantum dots. The wavelength-converting material of different thicknesses can then be produced via different printing steps: different lengths; two: additionally, small features (less than 100 micrometers) can be used (eg, dots, stripes) with a clock: nearest distance Printed. In other embodiments, the arylate tree:::: Γ is included in the molding material (for example, such as _ or C ′ is in the mold assembly of the mold light guide 4

1024-9835-PF 36 200912478 The same position has a varying density. In some embodiments, a lighting combination can include a thermal management system that dissipates heat generated by the illumination device. In some embodiments, the thermal management system can be disposed on the back side of the illumination assembly (e.g., on the opposite side of the light emitting surface). When the illuminating device produces a significant amount of hot high power illuminating device, it may be when a small number of illuminating devices are used to illuminate the individual squares.

Situation 'This feature may be desirable. An example of a thermal management system and a lighting system for a display is provided in U.S. Patent Application Serial No. 1 1/431,968, the entire disclosure of which is incorporated herein by reference. It is incorporated by reference in its entirety. Generally, a thermal management system can include a suitable system that conducts and dissipates heat that can be generated by the combined devices and components of the illumination. In some embodiments, a thermal management system Can be characterized by a thermal conductivity, or can include one or more components that are characterized by a thermal conductivity greater than 5000 W/mK, greater than 100 00 W/mK, and/or greater than 20 0 0 0 W/mK. In some embodiments, the thermal conductivity is between 1 000 00 w/mK and 50000 W/mK (eg, 1 〇〇〇〇 w/mK and 2 〇〇〇〇 w/ Between the clubs, 2000 (^/1111 (and between 3〇0 0 0 1/1^, 3〇〇〇〇|/between 4〇〇〇〇W/mK, 40000 W/mK and 5000 0) In the range between W/mK). In some embodiments, a thermal management system may include passive and/or active heat exchange mechanisms. Passive thermal management system A structure comprising - or a plurality of materials; can be rapidly thermally conducted due to a temperature difference in the structure. The second formation &amp; It is easy to exchange heat with the surroundings. In one case, two T, she

1024-9835-PF 37 200912478 The protrusion may include a fine structure that may have a large surface area. In yet another example, the thermal management system can include a conduit in which a fluid (e.g., liquid and/or gas) can flow to facilitate heat exchange and propagation. For example, the thermal management system can include one or more heat pipes to facilitate heat removal. Various heats are known to those skilled in the art, and it should be understood that the embodiments presented herein are not limited to the examples of such heat pipes. The heat pipe can be designed to have any suitable shape and need not be limited to only a cylindrical shape. Other heat pipe shapes can include a rectangle that can have any desired size. In some embodiments, - or a plurality of heat pipes may be arranged such that the first end of the heat pipe is located in an area of the illumination combination that is exposed to high temperatures, such as adjacent one or the next. The second end of the heat officer (i.e., the cooling end) can be exposed to the surroundings. The heat pipe can be in thermal contact with the protrusion to help exchange heat with the surroundings by providing an increased surface area. Because the heat pipe can have a heat transfer enthalpy that is several times greater than (for example, '5 times greater than, i. times greater than) many metals (eg, (4) thermal conductivity, by incorporating a heat pipe into the illumination system, heat transfer can be improved. The thermal system may include one or more suitable devices that may further assist in the extraction and transfer of heat. The active thermal management system may include mechanical, electrical, chemical, and/or any other suitable device to enable heat. The exchange becomes easier. In one embodiment, the 'active thermal management system can include a fan that is used to circulate air and provide cooling. In another embodiment, a pump can be used in the thermal management system. The conduits circulate fluid (e.g., liquid, gas). In other embodiments, the thermal management system can include a thermoelectric cooler that can further facilitate thermal extraction.

1024-9835-PF 38 200912478 In some embodiments, the device may include a solid-state illuminating light in the illuminating-polar body R 1R month combination - the implementation of the lining may be a hair / set - for example Light-emitting diode (led). Embodiments are also applicable to other illuminating devices, such as laser diodes; LEDs having different structures, such as organic LEDs, also referred to as ceramics as shown therein, include a multilayer stack 31, which may The J-branch structure is provided (not shown). The multi-layer stack 31 can include an active region 34 that is formed between the doped layer 35 and the P-doped layer 33. The stack can also include an 'electric layer 32' which can As a p-side contact, it can also be used as a light reflecting layer. The n-side contact pad 36 can be disposed on the layer 35. A conductive finger (not shown) can extend from the contact pad 36 along the surface 38, thereby The current is uniformly injected into the LCD structure. It should be understood that the LED is not limited to the structure shown in FIG. 16, for example, the n-doped and P-doped sides may be interchanged to form an LED 'which has contact with the contact pad 36. a p-doped region and an n-doped region in contact with layer 32. As (further, hereinafter, a potential can be applied to the contact liner, which can result in light being generated within the active region 34 and emitted (by the arrow 152 denotes at least some of the light generated by the emitting surface 38. As further explained below, the aperture 39 can be defined In the emitting surface 'to form a pattern that can affect light emission characteristics such as light extraction and/or light collimation. It should be understood that other modifications can be made to the proposed LED structure, and the embodiments are not limited thereto. The active area of the LED may include one or more quantum wells surrounded by a barrier layer. The quantum well structure may be a layer of semiconductor material (eg, in a single quantum well), or more than one layer of semiconductor material (eg, , in a multiple quantum well) 1024-9835-PF 39 200912478 Definition, with a smaller electron energy gap than the barrier layer. Semiconductor material layers suitable for quantum well structures may include InGaN, AlGaN, GaN, and combinations of these layers (eg 'Alternating InGaN/GaN layers, where the 'GaN layer acts as a barrier layer.') Typically, the LED can include an active region that includes one or more semiconductor materials, including Π IV semiconductors (eg, 'GaAs, AlGaAs, AlGaP, GaP, GaAsP, InGaAs, InAs, Inp, GaN, InGaN, InGaAlP, A1GaN, and combinations and alloys thereof, n-VI semiconductors (for example, ZnSe,

ZnCdSe 'ZnTe, ZnTeSe, ZnS, ZnSSe, and combinations and alloys thereof, and/or other semiconductors. Other luminescent materials are also possible, such as quantum dots or organic light-emitting layers. The impurity layer 35 may include a daylight doped GaN layer (eg, having a thickness of about __) and/or the p-doped layer 33 includes a magnesium doped GaN layer (eg, the conductive layer 32 may be a silver layer (eg, , having a U degree) 'which can also be used as a reflective layer (eg, upward reflection of any downward propagating light generated by =). Again, although not shown, the pot is included in the LED; for example, one The Sichuan (four) layer can be disposed between -4 and the erbium doped layer 33. It should be understood that the composition is also applicable to the layer of the LED. 由于 Because of the hole 39, the LED can have a dielectric function, which is based on Spatially varying. The usual hole rule pattern is (4), less than about 5 〇 _, ... micron (eg 'less than about 5 U 〇 nm, less than about 25 〇 nm) and the proximity distance can be less than about one micron (for example, between The most, less than about 250nm). Again, 750 (10), less than about ^ Gekou map does not, more than qq π heart. Zha can be different

1024-9835-PF 40 200912478 The spatially varying dielectric function according to a pattern, the first extraction efficiency and / or collimation: 曰 LED hair-layer can have a change in the dielectric function of a dielectric function It is not necessarily caused by a change in the dielectric function of the case at the interface, or a change in the basis of the image (for example, a pattern having a simple 彡° can be a periodic lattice), or Yes or no, super-cells f with complex repetitions, r has more than one in each cell cell repeated in a periodic manner: sign. Examples of complex periodic patterns include a honeycomb pattern, a "1 (2 χ 2) based pattern based on a honeycomb shape, and a ring-shaped Meade pattern. In some of the apricot beta ni times, certain holes and more complex periodic patterns may have a diameter as mentioned here, a non-periodic diagram: a pattern-pattern that has no translational symmetry on a unit cell, The single n degree 'is at least 50 times the peak wavelength of the light produced by the one or more light emitting portions. As the user is here, the peak wavelength means

For example, the wavelength with the maximum light intensity when measured using a spectrometer (4). Examples of aperiodic patterns include aperiodic patterns, quasi-crystalline patterns (for example, quasi-crystalline patterns with 8 symmetry), Robinson (R〇bins〇n) patterns, and Amman (A_an) patterns. The periodic pattern may also include a detUned pattern (as in U.S. Patent No. 6,831, 292, issued to Erchak et al. For example, the surface roughness can have a 1024-9835-PF 41 200912478 root mean square (rms) roughness that is approximately equal to an average feature size that can be related to the wavelength of the emitted light. In some embodiments, the illumination The interface of the device is patterned with holes that form photonic crystals. Suitable LEDs with dielectric functions that vary spatially (eg, photonic lattices) have been described, for example, on November 26, 2003. In US Pat. No. 6,831,302 B2, the name is "Light emitting devices with improved extraction efficiency", which is hereby incorporated by reference in its entirety. The high extraction efficiency of LEDs means high-powered emitted light, thereby obtaining high brightness. It may be desirable in different optical systems. It is to be understood that other patterns are also possible, including a pattern that conforms to the deformation of the precursor pattern according to the number of functions, including but not limited to angular displacement. The pattern may also include a portion of the morphing pattern, including but not limited to a pattern that conforms to angular displacement deformation. The pattern may also include regions having patterns that are related to one another via rotation. Various such patterns are

US Patent Publication No. 20070085098, Patterned devices and related methods, filed March 7, 2006, which is hereby incorporated by reference in its entirety. The light can be produced by LEDs as follows: p-side contact layer relative to the n-side contact profile Can be maintained at a positive potential, which causes the current to be injected into the 纟led. When current flows through the active region, electrons from the _heterogeneous layer can be combined with the hole from the P-doped layer in the active region, which can make the active region Generate &amp; action area

A plurality of point dipole radiation sources can be included which produce a wavelength spectrum of (4) forming a (four) region (Spectrum of wavelength characteristi 1024-983 5-PF 42 200912478. For InGaN/GaN quantum wells, generated by a light generating region The wavelength spectrum of light may have a peak wavelength of about 45 nanometers (nm) and a half-height full width (FWHM) of about 3q legs, which is perceived by the human eye as blue light. The light emitted by 纟LO may be passed through by light. Any pattern of the surface guide: the township _ ^ ~ a 'pattern can be arranged to affect the light extraction and / or collimation. In other embodiments 'acting region can produce light with a peak wavelength' which corresponds to ultraviolet Light (eg, having a peak wavelength of about 37 Bra 39{) nm), violet light (eg, having a peak wavelength of about 3 Q 0 - 4 9 η nu 々 U 430 nm), blue light (eg, having about 430-48 〇 nm) Peak wavelength) '#green light (for example, and has a weighted wavelength of -500nra), green light (for example, a bee-value wavelength of about 5〇〇-55 feet), yellow-green light (for example, having about 55峰值_575· peak wavelength), yellow light (for example, having about 575-5 A peak wavelength of 95 nm) 'yellow light (for example, having a peak wavelength of about 595-605 (four)) 'orange light (for example, and having an attack wavelength of about 6 〇 5-620 nm) 'red light (for example, having about (four) one 7 〇〇 peak wavelength), and / or infrared light (for example, having a peak wavelength of about 7 〇〇 _12 〇〇 _). In some embodiments, the LED can emit light having a high light output power. As previously explained, the high power of the emitted light can be a result of a pattern that affects the efficiency of the light-harvesting of the LED. For example, the light emitted by the LED can have a total power greater than 0.5 watts (eg, greater than! watts, greater than 5 watts). , greater than 1 watt). In some embodiments, 'though' should not be construed as limiting the scope of all embodiments, the light of 2 has a total power of less than (10) watts. The total light emitted from the LED can be measured using an integrating sphere equipped with a light meter such as the Sphere 〇pUcs ub. Partially required power

1024-9835-PF 43 200912478 Depends on the optical system in which the LED is used. For example, a display system (e.g., an 'LCD system) can benefit from combining high brightness LEDs, which can reduce the total number of LEDs used to illuminate the display system. Light produced by the LEDs can also have a high total power flux. As used herein, the term ''total power flux') means the total optical power divided by the area of the emission. In some embodiments, the total power flux is greater than 〇. 〇3 Watts/mm2, greater than 0.05 Watts/mm2 , greater than 〇, 1 Watts/mm2, greater than 〇 2 (.Wans/mm2. However, it should be understood that the LEDs used in the system and the methods proposed herein are not limited to the above power and power flux values. In one embodiment, the LED can be combined with one or more wavelength conversion regions. The wavelength conversion region can include one or more phosphorous and/or quantum dots. The wavelength conversion region can absorb light emitted by the light generating region of the LED and emit Light of a different wavelength than the absorbed person. In this way, the LED can emit light that cannot be easily obtained by the wavelength (and thus color) of the LED that does not include the wavelength conversion region. In some embodiments, one or more wavelength conversion regions It can be placed (directly) on the emitting surface of the illuminating device (eg, surface 38). For example, the LED can be an LED die, a partially packaged LED die, or a fully packaged LE. ]) grain. should understand l Ed may include two or more LED dies that are combined with each other, for example, a red illuminating [rib 曰曰 grain, a green illuminating LED dies, a blue illuminating LED dies, a cyan illuminating LED dies, or a yellow </ RTI> &lt; LE]) dies. For example, two or more combined LED dies can be mounted on a common package. Two or more LED dies can be combined such that their respective emitted light can be combined Producing the required spectral emission. Two or more LED dies can also be electrically connected to each other

1024-9835-PF 44 200912478 Combined (eg, connected to a common ground). As the user's structure (eg, layer, region) is said to be 'on another structure' or "supported by another structure", it may be directly on the structure, or There are intermediate structures (eg, layers, regions). One structure 'directly on another structure' or 'contact another structure' means that there is no intermediate structure. In view of the several aspects of at least one embodiment of the present invention, it will be apparent that various changes, modifications, and improvements can be readily made by those skilled in the art. This temple change, modification, and improvement is part of this specification and is within the spirit of the present invention. Therefore, the description and drawings are merely illustrative. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a perspective view of a conventional embodiment including a wavelength conversion material; FIG. 1B is a diagram; 4 illumination group of the region, including a cone according to an embodiment. Take a cross-sectional view; Figure 1C; jp secret. It is evident that the embodiment includes a cross-sectional view of the illumination group &amp; as a backlight unit; FIG. 2A-B is a flow of method r, a wavelength conversion according to an embodiment, and a spatially homogenized light pattern, 3A is a cross-sectional view of a spatially-converted, </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt;

1024-9835-PF 45 200912478 Source distance chart; FIG. 4 is a cross-sectional view of a lighting combination having a spatially varying density of wavelength converting material caused by different microscopic densities of wavelength converting materials, according to an embodiment, FIG. A side view of an illumination combination having a spatially varying density of wavelength converting material caused by different thicknesses of wavelength converting material, according to an embodiment; FIG. 6 is a graph having a plurality of regions of a plurality of wavelength converting materials according to an embodiment. A top view of the illumination combination of the spatially varying density of the wavelength converting material caused by the spatial arrangement; FIG. 7 is an illumination combination having a spatially varying density of the wavelength converting material caused by different sizes of the plurality of wavelength converting material regions according to the embodiment. Top view; --w -Γ «ν 7L· wm 剖面 Cross-sectional view and top view of the illumination combination including the wavelength conversion material. Figure 9 is an illumination comprising a wave-switching material under the back side of the light guide, according to an embodiment. A cross-sectional view of the combination; FIG. 10 is a cross-sectional view of the illumination combination of the ginseng conversion material on the %-guided light-emitting surface according to the embodiment. Figure 11A is a top view of a lighting combination comprising a plurality of domains according to an embodiment; a replacement material + Figure 11B is an illumination group comprising a plurality of wave domains according to an embodiment; a material change + a chart HB According to an embodiment, a wavelength conversion material half is included

1024-9835-PF 46 200912478 A cross-sectional view and a top view of the illumination combination; FIG. 13 of the @ domain is a top view including a combination of wavelength conversion materials according to an embodiment; and FIGS. 14A-B are respectively according to an embodiment A cross-sectional view and a top view of a combination of illumination comprising a wavelength converting material and one or more wavelength filters; FIGS. UA-B are respectively a cross-sectional view and a top view of a lighting combination including a wavelength converting material according to an embodiment; Figure 16 is a perspective view of a solid state lighting device in accordance with an embodiment. [Description of main component symbols] 31 · Multi-layer stacking; 32: Conductive layer; 3 3 : p-doped layer; 34: active region; 3 5 : n-doped layer; 36: contact pad; 38, 121: light-emitting surface 39: hole; l〇〇a, 10 0b, 300, 400, 600, 700, 800, 900, 1〇〇〇, 1100a, 1100b, 1 20 0, 1 300, 1 400, 1 500: lighting combination; 100c: display; 101: curve; 102, 153: light; 104: interval; 1024-9835-PF 47 200912478 110: light guide; 11 2: light homogenization area; 11 3: light output boundary; Take the region; ' 11 6 : wavelength conversion material region, 11 6 a - c : point; 11 7 : wavelength conversion material; 11 8 : light scattering characteristics; 120, 121: light emitting surface; 122: light input edge; Reflector; 1 2 5 : reflective surface; 1 2 6 : reflective layer; 128, 129, 132: wavelength filter; 1 50: solid state light-emitting device; 152: primary light; 1 5 3: secondary light; : heat conducting plane; 172: first position; 174: second position; 1 81: center portion; 182: corner portion; 190: layer; 1600: LED. 48

1024-9835-PF

Claims (1)

200912478 X. Patent application scope: 1 · A lighting combination comprising: at least one solid state light emitting device; an emitting surface through which a light system is emitted; and a wavelength converting material that converts at least some of the light emitted by the solid state light emitting device The wavelength of the light 'wavelength converting material has a first density per unit area of the emitting surface at the first position and a second density per unit area of the emitting surface at the second position, wherein the 0th mother is in the early position The first one differs from the first density in the stalk, and the density per unit area is the average area of lxl cm2. 2. For the illumination combination of the scope of the patent application, in the case of 1, the small bitter, the long conversion material in the first position and the second position = the second density is substantially different from the first density . 3. The illumination assembly of claim </RTI> wherein the second density is substantially different from the first density due to at least a portion of the wavelength conversion material being different at the first position and the second position. 4. The illumination assembly of claim 1, further comprising a plurality of wavelength conversion material regions including a wavelength conversion material, and wherein a portion of the plurality of wavelength conversion material regions are at the first position and the second portion The different spatial arrangements of 1 are substantially different from the first density. 5. The illumination assembly of claim 4, wherein the plurality of wavelength converting material regions have substantially similar shapes. 6. The illumination combination of claim i of the patent scope further includes a plurality of wavelength conversion material regions 'including wavelength conversion materials... 1024-9835-PF 49 200912478 partly due to the plurality of wavelength conversion material regions being in the first position and The different sizes of the second locations 'the second density are substantially different from the first density. [7] The illumination assembly of claim </RTI> wherein the second location is further from the solid state illumination device than the first location and the second density is substantially greater than the first density. 8. The illumination combination of claim 1, wherein the first and first wavelengths cause the wavelength converted light intensity from the first position to be at least 9% of the wavelength converted light intensity from the second position. And not greater than U 〇 % of the wavelength converted light intensity from the second position. 9. The illumination combination of claim ii, wherein the second density is greater than or equal to twice the first density. 10. The lighting assembly of claim i, wherein the conversion material comprises phosphorus. , u · such as the scope of patent application! A lighting combination of items wherein the wavelength converting material has a density & which is further increased away from the solid state lighting device. Such as the scope of patent application! The illumination combination of items, wherein the combination further comprises: ~ ^ Light V, configured to receive light emitted by the solid state lighting device, having a length along which the received light propagates, and /, the medium wavelength converting material having along The length of the light guide changes the density per unit area of the hair surface. I "I3. The illumination combination of claim 12, wherein the distance of the length of the light guide of the two-centered wavelength-converting material per unit area of the Shanghai emitting surface monotonously changes. 1024-9835-PF 50 The illumination assembly of claim 12, wherein the light guide comprises an edge configured to receive light emitted by the solid state light emitting device. 1 5. A lighting combination as claimed in claim 126, wherein The wavelength conversion material is at least partially disposed within the light guide. 1 6. The illumination assembly of claim i, wherein the wavelength conversion material is at least partially disposed on a light emitting surface of the light guide. The illumination combination of clause i2, wherein the wavelength r-conversion material is at least partially disposed to be in contact with the light-emitting surface of the light guide. % 1 8. The illumination assembly of claim 12, wherein the light guide includes The lunar surface 'its light emitting surface relative to the light guide, and wherein the wavelength converting material is at least partially disposed under the back surface. i9 · Illumination combination as claimed in claim 18 Wherein the wavelength converting material is at least partially disposed to contact the back side of the light guide. 20. The lighting combination of claim 12, wherein the wavelength converting material is illuminated with light of higher intensity from the solid state lighting device: (Setting /, there is a lower density of illumination in the lower intensity of the illuminating device.) The illumination combination of the first item of the patent application, wherein the wavelength conversion material includes 粦A lighting combination in which a solid state 'wavelength converting material is provided. 22. The light emitting device of claim 2 includes a light emitting surface, and wherein the light emitting surface of the solid state light emitting device. The lighting combination of item 22, wherein at least the solid-state light-emitting device comprises a plurality of solid-state light-emitting devices, which are located on a first plane 1024-9835-PF 51 200912478-plane parallel plane, and wherein the first and the first - a long music The position is located at a different position from the 苐-plane. 24. As in the illumination combination of claim 23, the conversion material is in a plurality of solid state The higher intensity light illumination position of the optical device has a lower density than the position illuminated by the lower intensity light from the plurality of solid state illumination devices. 25. A lighting combination comprising: a solid state illumination device; - a light guide 'configured to receive light emitted by the solid state light emitting device, the light guide having a length along which the received light propagates and an emission surface substantially parallel to the length of the light guide and through which the light is emitted; and a wavelength converting material having A density per unit area of the emitting surface 'which increases substantially along the length of the light guide. 26. A display comprising: at least one solid state light emitting device; an emitting surface through which light is emitted; a wavelength converting material that converts a wavelength of at least some of the light emitted by the solid state light emitting device, the wavelength converting material having a first density per unit area of the emitting surface at the first location and a second density per unit area of the emitting surface at the second location, wherein The second density is substantially different from the first density, and wherein the density per unit area is determined by an average area of lxl cm 2 And a liquid crystal layer arranged to receive light converted by at least some of the wavelengths emitted by the wavelength converting material. 1024-9835-PF 52 200912478 2 7. A display comprising: at least one solid state light emitting device; a first wavelength converting material region 'which converts a wavelength of at least some of the light emitted by the solid state light emitting device to a first wavelength spectrum; a second wavelength converting material region 'which converts a wavelength of at least some of the light emitted by the solid state light emitting device to a second wavelength spectrum different from the first wavelength spectrum; &amp; a liquid crystal layer comprising a first pixel light valve Light 'and a second pixel light valve' arranged to receive at least some of the wavelengths emitted by the first wavelength converting material are arranged to receive light converted by at least some of the wavelengths emitted by the second wavelength converting material. 28. A method of making a lighting assembly, comprising: providing at least one solid state lighting device; and providing a wavelength converting material that converts wavelengths of certain light from I to V emitted by the solid state lighting device, the wavelength converting material having a first position a first density per unit area of the emitting surface and a first-thickness per unit area of the (four) plane at the = position, wherein the second density is substantially different from the density of the unit area of the first octave The average area of 1 X1 cm2 is defined. 29. A lighting combination comprising: at least - a solid state light emitting device; and at least - a light guide 'comprising a lighted region' configured to receive a '1024-9835-PF 53 200912478 light homogenized region emitted by the solid state light emitting device The uniform light 'light homogenization region includes a wave of light and includes a light output boundary that distributes a long transition material that is output on the light output boundary, which is disposed within at least a portion of the light homogenization region. 30. The illumination assembly of claim 29, wherein the at least - the pilot further comprises a light extraction region configured to receive light from the light homogenization region, the filament region having the received light propagating therethrough - the length and the emitting surface through which the light is emitted. X. The illumination combination of claim 29, wherein the wavelength converting material is disposed throughout the light homogenizing region. 32_ as in the scope of application for the conversion material for the area of light homogenization. The lighting combination of item 29, wherein at least two of the wavelengths have a varying dense wavelength. 33. The illumination combination of claim 32, wherein the density of the conversion material is highest at a light output boundary. Wavelength 34. As in the illumination combination of claim 32, the density of the conversion material in the bean is lowest at the light output boundary. 。 wavelength 35. The illumination assembly of claim 29, wherein the conversion material comprises a first Ώ ^ , r E and a first wavelength conversion material, and wherein the first wavelength conversion material is configured to emit a first wavelength The wavelength converting material is configured to emit a second main slope length that is different from the first dominant wavelength, and the centering, == changing material is disposed in the optical path between the solid state lighting device and the second wavelength converting material. 36. The illumination assembly of claim 35, wherein the dominant wavelength is greater than the second dominant wavelength. 1024-9835-PF 54 200912478 37. The illumination combination of claim 35, wherein the first dominant wavelength is less than the second dominant wavelength. 38. The illumination assembly of claim 35, further comprising a wavelength filter disposed in the optical path between the first and second wavelength converting materials and configured to reflect the second wavelength conversion The light emitted by the material transmits and transmits light emitted by the first wavelength material and the solid state light emitting device. 39. The illumination assembly of claim 29, wherein at least f' a light guide comprises a rectangular waveguide and the light output boundary is a rectangular section of the rectangular waveguide. 40. The illumination assembly of claim 29, wherein the wavelength conversion material comprises scales. 41. A lighting combination comprising: at least one solid state light emitting device; and at least one light guide comprising a light homogenizing region configured to receive light emitted by the solid state light emitting device and comprising a light output boundary, the light homogenizing region being substantially Evenly distributing the light outputted on the light output boundary, and a light extraction region configured to receive light from a light output boundary of the light homogenization region, the light extraction region comprising a wavelength conversion material disposed in the light Within at least a portion of the capture region, the light extraction region has a length along which the received light propagates and an emission surface through which the light is emitted. 4 2 _ - a liquid crystal display system, comprising: a liquid crystal display panel having an illumination area; at least one solid illumination device combined with the liquid crystal display panel such that 1024-9835-PF 55 200912478 is emitted by the solid state light emitting device The light illuminating liquid crystal display panel; and a wavelength converting material disposed to be away from the at least one solid state light emitting device, wherein the number of the solid state light emitting devices of each in2 of the illumination region is less than 100 〇 4 3. The lighting combination comprises: At least one solid state light emitting device; a light guide configured to receive light emitted by the solid state light emitting device, the light guide having a length along which the received light propagates and an emitting surface through which the light is emitted; a wavelength converting material disposed at The optical path between the solid state light emitting device and the emitting surface of the light guide; and the wavelength filter 'are disposed in the optical path between the solid state light emitting device and the wavelength converting material. 44. The lighting combination of claim 43 of the patent application includes a light The homogenized region is disposed in the optical path between the solid state light emitting device and the emitting surface of the light guide. 45. The illumination assembly of claim 44, wherein the wavelength converting material is disposed within the light homogenizing region. 46. If the patent application scope conversion material is disposed on the light homogenization output side. The lighting combination of 44 items, "in the wavelength region - or multiple light in or light 7. As in the lighting combination of the 44th patent application, the gannon light device is included in the light of the zh a light-input side of the uniformized region, wherein the first-yth-thin-short-wave filter short-wave filter is configured to transmit light to the solid-state light-emitting 1024-9835-PF 56 200912478 device and Light that is converted from the wavelength of the wavelength converting material is reflected. 48. The illumination combination of claim 47, further comprising a long wave on the light exit side of the optical sentence &gt; region, the filter, #, the long wave filter is configured to transmit from the wavelength The wavelength of the converted material is converted light and reflects light from the solid state light emitting device. (49. The illumination combination according to the scope of the patent application, further comprising - the second short-wave filter, the optical device and a second wavelength conversion material different from the first-wavelength conversion material, wherein the second short-wave filter is disposed at In an optical path between the wavelength converting material and the second wavelength converting material, and wherein the second short wave optocoupler is configured to transmit &amp; from the solid state lighting device, transmit light converted from the wavelength of the wavelength converting material, and Reflecting light converted from the wavelength of the second wavelength converting material. The lighting combination as described in claim 44 includes more than - or a plurality of reflecting surfaces on the surface of the homogenized region. The illumination combination conversion material of the 43rd item includes phosphorus. The method for manufacturing a lighting combination, the method comprising: providing at least one solid state light emitting device; and providing at least one light guide, including a light homogenization zone, configured to The receiving is emitted by the solid-state light-emitting splicing, and includes - the age of 44, the interest field distribution is outputted in the light 屮t light homogenization area substantially uniformly... Light, the light on the boundary region homogenized comprising - a wavelength converting material, Gan, regardless ❿f plant /, breaking the light arranged in the region of at least homogenization - inner portion 1024-9835-PF 57