US20220214582A1 - Display apparatus comprising a reflective sheet having a plurality of first and second light conversion patches respectively arranged around a circumference of first and second holes - Google Patents
Display apparatus comprising a reflective sheet having a plurality of first and second light conversion patches respectively arranged around a circumference of first and second holes Download PDFInfo
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- US20220214582A1 US20220214582A1 US17/418,664 US202117418664A US2022214582A1 US 20220214582 A1 US20220214582 A1 US 20220214582A1 US 202117418664 A US202117418664 A US 202117418664A US 2022214582 A1 US2022214582 A1 US 2022214582A1
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Abstract
A display apparatus includes a liquid crystal panel, and a light source apparatus configured to irradiate the liquid crystal panel with light. The light source apparatus includes a plurality of light sources configured to emit blue light, and a reflective sheet with a plurality of holes through which the light passes. The plurality of holes includes a first hole disposed at an edge portion of the reflective sheet, and a second hole in which a distance from an edge of the reflective sheet to the second hole is greater than a distance between the edge of the reflective sheet and the first hole and a plurality of first light conversion patches arranged along a circumference of a circle surrounding the first hole on the reflective sheet, and a plurality of second light conversion patches arranged along a circumference of a circle surrounding the second hole on the reflective sheet
Description
- This application is a national stage application of International Application No. PCT/KR2021/002835 filed on Mar. 8, 2021, which claims priority from Korean Patent Application No. 10-2021-0000892, filed on Jan. 5, 2021 and Korean Patent Application No. 10-2021-0015416, filed on Feb. 3, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in their entireties.
- The present disclosure relates to a display apparatus and more particularly, to a display apparatus having a thin thickness, and a light source module thereof.
- Generally, a display apparatus converts obtained or stored electrical information into visual information and displays the visual information to a user. The display apparatus is used in various fields such as home or workplace.
- The display apparatus includes a monitor apparatus connected to a personal computer or a server computer, a portable computer device, a navigation terminal device, a general television apparatus, an Internet Protocol television (IPTV), a portable terminal device, such as a smart phone, a tablet PC, a personal digital assistant (PDA) or a cellular phone, various display apparatuses used to reproduce images, such as advertisements or movies in an industrial field, or various kinds of audio/video systems.
- The display apparatus includes a light source module configured to convert electrical information into visual information, and the light source module includes a plurality of light sources configured to independently emit light. Each of the plurality of light sources includes, for example, a light emitting diode (LED) or an organic light emitting diode (OLED). For example, the LED or the OLED may be mounted on a circuit board or a substrate.
- Recently, display apparatuses have become thinner and thinner. In order to provide a thin display apparatus, a light source module must also become thinner. Because a thickness of the light source module is reduced, a light source may be miniaturized and the number of light sources disposed in the light source module may be increased. The miniaturization of the light source and the increase in the number of light sources may cause optical defects (for example, unevenness) of the light source module.
- The present disclosure is directed to providing a display apparatus capable of preventing or suppressing an optical defect (for example, unevenness).
- One aspect of the present disclosure provides a display apparatus including a liquid crystal panel and a light source apparatus configured to irradiate light to the liquid crystal panel. The light source apparatus includes a plurality of light sources configured to emit blue light, and a reflective sheet in which a plurality of holes, through which the plurality of light sources is passed, respectively, is formed. The plurality of holes includes a first hole disposed at an edge portion of the reflective sheet, and a second hole in which a distance from the edge of the reflective sheet is greater than a distance between the edge of the reflective sheet and the first hole. The light source apparatus further includes a plurality of first light conversion patches arranged along a circumference of a circle surrounding the first hole on the reflective sheet, and a plurality of second light conversion patches arranged along a circumference of a circle surrounding the second hole on the reflective sheet. A size of each of the plurality of first light conversion patches is greater than a size of each of the plurality of second light conversion patches, and each of the plurality of first and second light conversion patches includes at least one of a yellow fluorescent material, a yellow dye, or a yellow pigment.
- Another aspect of the present disclosure provides a display apparatus including a liquid crystal panel, and a light source apparatus configured to irradiate light to the liquid crystal panel. The light source apparatus includes a plurality of light sources configured to emit blue light and a reflective sheet in which a plurality of holes, through which the plurality of light sources is passed, respectively, is formed. The plurality of holes includes a first hole disposed at an edge portion of the reflective sheet, and a second hole farther away from the edge of the reflective sheet in comparison with the first hole. The light source apparatus further includes first light conversion patches arranged around the first hole on the reflective sheet, and second light conversion patches arranged around the second hole on the reflective sheet. An area density of the first light conversion patches is greater than an area density of the second light conversion patches.
- Yet another aspect of an exemplary embodiment of the present disclosure provides a display apparatus including a liquid crystal panel, and a light source apparatus configured to irradiate the liquid crystal panel with light. The light source apparatus includes a plurality of light sources configured to emit blue light, and a reflective sheet including a plurality of holes through which the light emitted from the plurality of light sources passes. The plurality of holes includes a first hole disposed at an edge portion of the reflective sheet, and a second hole in which a distance from an edge of the reflective sheet to the second hole is greater than a distance between the edge of the reflective sheet and the first hole. Additionally, the light source apparatus further includes a plurality of first light conversion patches arranged along a circumference of a circle surrounding the first hole on the reflective sheet, and a plurality of second light conversion patches arranged along a circumference of a circle surrounding the second hole on the reflective sheet. A size of each of the plurality of first light conversion patches is greater than a size of each of the plurality of second light conversion patches, and the plurality of first light conversion patches and second light conversion patches include at least one of a yellow fluorescent material, a yellow dye, or a yellow pigment.
- An additional aspect of an exemplary embodiment provides a display apparatus including a liquid crystal panel and a light source apparatus configured to irradiate light to the liquid crystal panel with light. The light source apparatus includes a plurality of light sources configured to emit blue light and a reflective sheet in which a plurality of holes, through which the light emitted from the plurality of light sources passes. The plurality of holes include a first hole disposed at an edge portion of the reflective sheet and a second hole disposed farther away from the an edge of the reflective sheet in comparison with the first hole. The light source apparatus further includes a plurality of first light conversion patches arranged around the first hole on the reflective sheet, and a plurality of second light conversion patches arranged around the second hole on the reflective sheet. Finally, an area density of the plurality of first light conversion patches is greater than an area density of the plurality of second light conversion patches.
- A display apparatus according to an aspect of the present disclosure may prevent or suppress an optical defect (for example, uneveness).
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FIG. 1 is a view of an appearance of a display apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 2 is an exploded view of the display apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 3 is a view of a liquid crystal panel of the display apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 4 is an exploded view of a light source apparatus of the display apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 5 is a perspective view of a light source included in the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 6 is a view of an example of a light emitting diode included in the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 5 is a view of an example of a reflective sheet included in the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 6 is a view of an example of the light emitting diode included in the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 7 is a view of a travel path of light in the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 8 is a view of a travel path of light at a center portion and an edge portion of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 9 is a view of a light conversion patch arranged on the edge portion of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 10 is a view of an example of an arrangement of the light conversion patch of left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 11 is a view of an example of an arrangement of the light conversion patch of a corner portion of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 12 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 13 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 14 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 15 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 16 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 17 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 18 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 19 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 20 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 21 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 22 is a view of an example of the light conversion patch arranged on the edge portion of the light source apparatus according to an exemplary embodiment of the present disclosure. - In the following description, like reference numerals refer to like elements throughout the specification. Well-known functions or constructions are not described in detail since they would obscure the one or more exemplary embodiments with unnecessary detail. Terms such as “unit”, “module”, “member”, and “block” may be embodied as hardware or software. According to embodiments, a plurality of “unit”, “module”, “member”, and “block” may be implemented as a single component or a single “unit”, “module”, “member”, and “block” and may also include a plurality of components.
- When an element is referred to as being “connected” to another element, it can be directly or indirectly connected to the other element, wherein the indirect connection includes “connection via a wireless communication network”.
- Also, when a part “includes” or “may include” an element, unless there is a particular description contrary thereto, the part may further include additional elements, not excluding the other elements.
- When a first member is “on” a second member, the first member is in contact with the second member, but also includes when there is a third member between the first and second members.
- Although the terms first, second, third, etc., may be used herein to describe various elements, is the elements should not be limited by these terms. These terms are only used to distinguish one element from another element.
- As used herein, the singular forms “a,” “an” and “the” include the plural forms of the words as well, unless the context clearly indicates otherwise.
- An identification code is used for the convenience of the description but is not intended to illustrate the order of each step. Each step may be implemented in an order different from the illustrated order unless the context clearly indicates otherwise.
- Hereinafter exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
-
FIG. 1 is a view depicting of a display apparatus according to an exemplary embodiment of the disclosure. - A
display apparatus 1 is a device that processes an image signal received from an outside source and visually displays the processed image. Hereinafter an exemplary embodiment of adisplay apparatus 1 that is a television is described, but the present disclosure is not limited thereto. For example, thedisplay apparatus 1 may be implemented in various forms, such as a monitor, a portable multimedia device, and a portable communication device and thedisplay apparatus 1 is not limited in its shape as long as thedisplay apparatus 1 visually displays an image. - The
display apparatus 1 may be a large format display (LFD) installed outdoors, such as a roof of a building or a bus stop. TheLFD display apparatus 1 is not limited to the outside of a building, and thus thedisplay apparatus 1 according to an exemplary embodiment may be installed in any place where the display apparatus is viewable by a large number of people, including indoors such as in subway stations, shopping malls, movie theaters, companies, and stores. - The
display apparatus 1 may receive content data including video data and audio data from various content sources and output video and audio corresponding to the video data and the audio data. For example, thedisplay apparatus 1 may receive content data through a broadcast reception antenna or cable, receive content data from a content playback device, or receive content data from a content provider's content server. - As illustrated in
FIG. 1 , thedisplay apparatus 1 may include abody 11, and/or ascreen 12 configured to display an image I. - The
body 11 may form an appearance, e.g., a border, of thedisplay apparatus 1, and thebody 11 may include a component configured to allow thedisplay apparatus 1 to display the image I and to perform various functions. Although thebody 11 shown inFIG. 1 is in the form of a flat plate, the shape of thebody 11 is not limited thereto. For example, thebody 11 may have a curved plate shape. - The
screen 12 may be formed on a front surface of thebody 11, and display the image I. For example, thescreen 12 may display a still image or a moving image. Further, thescreen 12 may display a two-dimensional plane image or a three-dimensional image to the user using binocular parallax. - For example, the
screen 12 may include a self-emission panel (for example, a light emitting diode panel or an organic light emitting diode panel) configured to directly emit light, or a non-self-emission panel (for example, a liquid crystal panel) configured to transmit or block light emitted by a light source apparatus (for example, a backlight unit). - A plurality of pixels P may be formed on the
screen 12 and the image I displayed on thescreen 12 may be formed by the light emitted from the plurality of pixels P. For example, a single still image may be formed on thescreen 12 by combining light emitted from the plurality of pixels P as a mosaic. - Each of the plurality of pixels P may emit different brightness and different color of light. In order to emit light in the various colors, the plurality of pixels P may include sub-pixels PR, PG, and PB.
- The sub-pixels may include a red sub pixel PR emitting red light, a green sub pixel PG emitting green light, and a blue sub pixel PB emitting blue light. For example, the red light may represent a light beam having a wavelength of approximately 620 nm (nanometers, one billionth of a meter) to 750 nm, the green light may represent a light beam having a wavelength of approximately 495 nm to 570 nm, and the blue light may represent a light beam having a wavelength of approximately 450 nm to 495 nm.
- By combining the red light of the red sub pixel PR, the green light of the green sub pixel PG and the blue light of the a blue sub pixel PB, each of the plurality of pixels P may emit different brightness and different color of light.
-
FIG. 2 is an exploded view of the display apparatus according to an exemplary embodiment of the present disclosure.FIG. 3 is a view of a liquid crystal panel of the display apparatus according to an exemplary embodiment of the present disclosure. - As shown in
FIG. 2 , various components configured to generate the image I on thescreen 12 may be provided inside thebody 11. - For example, the
body 11 includes alight source apparatus 100 that is a surface light source, aliquid crystal panel 20 configured to block or transmit light emitted from thelight source apparatus 100, acontrol assembly 50 configured to control an operation of thelight source apparatus 100 and theliquid crystal panel 20, and apower assembly 60 configured to supply power to thelight source apparatus 100 and theliquid crystal panel 20. Further, thebody 11 may include abezel 13, a framemiddle mold 14, abottom chassis 15, and arear cover 16 which are configured to support and fix theliquid crystal panel 20, thelight source apparatus 100, thecontrol assembly 50, and thepower assembly 60. - The
light source apparatus 100 may include a point light source configured to emit monochromatic light or white light. Thelight source apparatus 100 may refract, reflect, and/or scatter light in order to convert light, which is emitted from the point light source, into uniform surface light. As mentioned above, thelight source apparatus 100 may refract, reflect, and/or scatter light, which is emitted from the point light source, thereby emitting uniform surface light toward the front. - A configuration of the
light source apparatus 100 will be described in more detail below. - The
liquid crystal panel 20 is provided in front of thelight source apparatus 100 and blocks or transmits light emitted from thelight source apparatus 100 to form the image I. - A front surface of the
liquid crystal panel 20 may form the screen-12 of thedisplay apparatus 1 described above, and theliquid crystal panel 20 may form the plurality of pixels P. In theliquid crystal panel 20, the plurality of pixels P may independently block or transmit light of thelight source apparatus 100, and the light transmitted through the plurality of pixels P may form the image I displayed on thescreen 12. - For example, as shown in
FIG. 3 , theliquid crystal panel 20 may include a firstpolarizing film 21, a firsttransparent substrate 22, apixel electrode 23, athin film transistor 24, aliquid crystal layer 25, acommon electrode 26, acolor filter 27, a secondtransparent substrate 28, and a secondpolarizing film 29. - The first
transparent substrate 22 and/or the secondtransparent substrate 28 may fixedly support thepixel electrode 23, thethin film transistor 24, theliquid crystal layer 25, thecommon electrode 26, and/or thecolor filter 27. The firsttransparent substrate 22 and/or the secondtransparent substrate 28 may be formed of tempered glass or transparent resin. - The first
polarizing film 21 and/or the secondpolarizing film 29 are provided on the outside of the firsttransparent substrate 22 and/or the secondtransparent substrate 28. Each of the firstpolarizing film 21 and the secondpolarizing film 29 may transmit a specific polarized light beam and block (reflect or absorb) other polarized light beams. For example, the firstpolarizing film 21 transmits polarized light beams in a first direction and blocks (reflect or absorb) other polarized light beams. In addition, the secondpolarizing film 29 transmits polarized light beams in a second direction and blocks (reflect or absorb) other polarized light beams. In this case, the first direction and the second direction may be perpendicular to each other. Accordingly, the polarized light beam transmitted through the firstpolarizing film 21 may not pass through the secondpolarizing film 29. - The
color filter 27 may be provided inside the secondtransparent substrate 28. Thecolor filter 27 may include ared filter 27R transmitting red light, agreen filter 27G transmitting green light, and ablue filter 27G transmitting blue light. Thered filter 27R, thegreen filter 27G, and theblue filter 27B may be disposed parallel to each other. A region in which thecolor filter 27 is formed corresponds to the pixel P described above. A region in which thered filter 27R is formed corresponds to the red sub-pixel PR, a region in which thegreen filter 27G is formed corresponds to the green sub-pixel PG, and a region in which theblue filter 27B is formed corresponds to the blue sub-pixel PB. - The
pixel electrode 23 may be provided inside the firsttransparent substrate 22, and thecommon electrode 26 may be provided inside the secondtransparent substrate 28. Thepixel electrode 23 and thecommon electrode 26 may be formed of a metal material through which electricity is conducted. Thepixel electrode 23 and thecommon electrode 26 may generate an electric field to change the arrangement ofliquid crystal molecules 25 a forming theliquid crystal layer 25 to be described below. - The thin film transistor (TFT) 24 is provided inside the second
transparent substrate 22. TheTFT 24 may transmit or block a current flowing through thepixel electrode 23. For example, an electric field may be formed or removed between thepixel electrode 23 and thecommon electrode 26 in response to turning on (closing) or turning off (opening) theTFT 24. - The
liquid crystal layer 25 is formed between thepixel electrode 23 and thecommon electrode 26. Theliquid crystal layer 25 is filled with theliquid crystal molecules 25 a. Liquid crystals represent an intermediate state between a solid (crystal) and a liquid. Liquid crystals also exhibit optical properties according to changes in an electric field. For example, in the liquid crystal, the direction of an arrangement of molecules forming the liquid crystal may change according to a change in an electric field. As a result, the optical properties of theliquid crystal layer 25 may vary depending on the presence or absence of an electric field transmitted through theliquid crystal layer 25. - A
cable 20 a configured to transmit image data to theliquid crystal panel 20, and a display driver integrated circuit (hereinafter referred to as ‘panel driver’) 30 configured to process digital image data and output an analog image signal are provided at one side of theliquid crystal panel 20. - The
cable 20 a may electrically connect thecontrol assembly 50 and/or thepower assembly 60 to thepanel driver 30, and may also electrically connect thepanel driver 30 to theliquid crystal panel 20. Thecable 20 a may include a flexible flat cable or a film cable that is bendable. - The
panel driver 30 may receive image data and/or power from thecontrol assembly 50 and/or thepower assembly 60 through thecable 20 a. Thepanel driver 30 may transmit the image data and driving current to theliquid crystal panel 20 through thecable 20 a. - In addition, the
cable 20 a and thepanel driver 30 may be integrally implemented as a film cable, a chip on film (COF), or a tape carrier package (TCP). In other words, thepanel driver 30 may be disposed on thecable 20 a. However, the disclosure is not limited thereto, and thepanel driver 30 may be disposed on theliquid crystal panel 20. - The
control assembly 50 may include a control circuit configured to control an operation of theliquid crystal panel 20 and thelight source apparatus 100. For example, the control circuit may process image data received from an external content source, transmit the image data to theliquid crystal panel 20, and transmit dimming data to thelight source apparatus 100. - The
power assembly 60 may supply power to thelight source apparatus 100 to allow thelight source apparatus 100 to output surface light and thepower assembly 60 may supply power theliquid crystal panel 20 to allow theliquid crystal panel 20 to block or transmit the light of thelight source apparatus 100. - The
control assembly 50 and thepower assembly 60 may be implemented with a printed circuit board and various circuits mounted on the printed circuit board. For example, the power circuit may include a capacitor, a coil, a resistance element, a processor, and a power circuit board on which the capacitor, the coil, the resistance element, and the processor are mounted. Further, the control circuit may include a memory, a processor, and a control circuit board on which the memory and the processor are mounted. -
FIG. 4 is an exploded view of a light source apparatus of the display apparatus according to an exemplary embodiment of the present disclosure.FIG. 5 is a perspective view of a light source included in the light source apparatus according to an exemplary embodiment of the present disclosure.FIG. 6 is a view of an example of the light emitting diode included in the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 4 , thelight source apparatus 100 may include alight source module 110 configured to generate light, areflective sheet 120 configured to reflect light, adiffuser plate 130 configured to uniformly diffuse light, and anoptical sheet 140 configured to improve luminance of light that is emitted. - The
light source module 110 may include a plurality oflight sources 111 configured to emit light, and asubstrate 112 configured to support/fix the plurality oflight sources 111. - The plurality of
light sources 111 may be arranged in a predetermined pattern to allow light to be emitted with uniform luminance. The plurality oflight sources 111 may be arranged in such a way that a distance between one light source and light sources adjacent thereto is the same. - For example, as shown in
FIG. 4 , the plurality oflight sources 111 may be arranged in rows and columns. Accordingly, the plurality oflight sources 111 may be arranged such that an approximately square is formed by four adjacent light sources. In addition, any one light source may be disposed adjacent to four light sources, and a distance between one light source and four adjacent light sources may be approximately the same. - Alternatively, the plurality of light sources may be disposed in a plurality of rows, and a light source belonging to each row may be disposed at the center of two light sources belonging to an adjacent row. Accordingly, the plurality of light sources may be arranged such that an approximately equilateral triangle is formed by three adjacent light sources. In this case, one light source may be disposed adjacent to six light sources, and a distance between one light source and six adjacent light sources may be approximately the same.
- However, the pattern in which the plurality of
light sources 111 is disposed is not limited to the pattern described above, and the plurality oflight sources 111 may be disposed in various patterns to allow light to be emitted with uniform luminance. - The
light source 111 may employ an element configured to emit monochromatic light (light of a specific wavelength or light of a single peak wavelength, for example, blue light) or white light (light of a plurality of peak wavelengths, for example, light of a mixture of red light, green light, and blue light) in various directions by receiving power. - Each of the plurality of
light source 111 may include a light emitting diode (LED) 190, and anoptical dome 180. - To reduce a thickness of the
display apparatus 1, a thickness of theoptical device 100 may be reduced. A thickness of each of the plurality oflight sources 111 is reduced to allow the thickness of theoptical device 100 to be reduced resulting in a simplified structure. - The
LED 190 may be directly attached to thesubstrate 112 in a Chip On Board (COB) method. In other words, thelight source 111 may include theLED 190 where a light emitting diode chip or a light emitting diode die is directly attached to thesubstrate 112 without an additional package. - The
LED 190 may be manufactured in the flip chip type. As for the flip-chip type LED 190, when attaching the light emitting diode corresponding to a semiconductor device to thesubstrate 112, an intermediate medium, such as a metal lead (wire) or a ball grid array (BGA) may not be used. Instead, an electrode pattern of the semiconductor device may be fused to thesubstrate 112 as it is. Accordingly, because the metal lead (wire) or the ball grid array is omitted, thelight source 111 including the flip-chip type LED 190 may be miniaturized. - For example, the
LED 190 may be a Distributed Bragg Reflector (DBR) based LED including a DBR, as shown inFIG. 6 . - The
LED 190 may include atransparent substrate 195, an n-type semiconductor layer 193 (for example, n-type GaN, or n-type gallium nitride) and a p-type semiconductor layer 192 (for example, p-type GaN, or p-type gallium nitride). Between the n-type semiconductor layer 193 and the p-type semiconductor layer 192, a multi-quantum well (MQW)layer 194 and an electron-blocking layer (EBL) 197 are formed. In response to a current being supplied to theLED 190, electrons and holes are recombined in theMQW layer 194 and thus light may be emitted. - A
first electrode 191 a of theLED 190 is in electrical contact with the p-type semiconductor layer 192, and asecond electrode 191 b is in electrical contact with the n-type semiconductor layer 193. Thefirst electrode 191 a and thesecond electrode 191 b may function not only as electrodes, but also as reflectors configured to reflect light. - A
DBR layer 196 is provided on the outside of thetransparent substrate 195. TheDBR layer 196 may be formed by laminating a material having a different refractive index, and theDBR layer 196 may reflect incident light. Because theDBR layer 196 is provided outside the transparent substrate 195 (an upper side in the drawing), light perpendicularly incident on theDBR layer 196 may be reflected by theDBR layer 196. Therefore, an intensity of light, which is emitted in a direction perpendicular to the DBR layer 196 (an upward direction of the light emitting diode in the drawing) D1, is less than an intensity of light, which is emitted in a direction inclined with respect to the DBR layer 196 (for example, a direction inclined by approximately 60 degrees from the upward direction in the drawing) D2. In other words, theLED 190 may emit stronger light in a lateral direction than in a vertical direction. - In the above description, the flip-
chip type LED 190 directly fused on thesubstrate 112 in the COB method has been described, but thelight source 111 is not limited to the flip-chip type LED 190. For example, thelight source 111 may include a package type LED. - The
optical dome 180 may cover theLED 190. Theoptical dome 180 may prevent or suppress damages to theLED 190 caused by an external mechanical action and/or damage to theLED 190 caused by to a chemical action. - The
optical dome 180 may have a dome shape formed in such a way that a sphere is cut into a surface not including the center thereof, or may have a hemispherical shape in such a way that a sphere is cut into a surface including the center thereof. A vertical cross section of theoptical dome 180 may be a bow shape or a semicircle shape. - The
optical dome 180 may be formed of silicone or epoxy resin. For example, the molten silicon or epoxy resin may be discharged onto theLED 190 through a nozzle, and the discharged silicon or epoxy resin may be cured, thereby forming theoptical dome 180. - Accordingly, the shape of the
optical dome 180 may vary depending on the viscosity of the liquid silicone or epoxy resin. For example, theoptical dome 180 is manufactured using silicon having a thixotropic index of about 2.7 to 3.3 (appropriately, 3.0). Additionally, theoptical dome 180 may be formed with a dome ratio indicating a ratio of a height of a dome with respect to a diameter of a base of the dome (the height of the dome/the diameter of the base) of approximately 0.25 to 0.31 (appropriately 0.28). For example, theoptical dome 180 formed of silicon having a thixotropic index of approximately 2.7 to 3.3 (appropriately 3.0) may have a diameter of approximately 2.5 mm (millimeter; 1/1,000 meter). The diameter of theoptical dome 180 may have an error margin of approximately ±20%, and may be between approximately 2.0 mm and 3.0 mm. The height of theoptical dome 180 may of approximately 0.7 mm. The height of theoptical dome 180 may have an error margin of approximately ±20% and may be between approximately 0.5 mm and 0.9 mm. - However, the diameter (or size) of the
optical dome 180 is not limited thereto and thus the diameter (or size) of theoptical dome 180 may be approximately several hundred μm (micrometers; 1/1,000,000 meter) to several tens of mm. - The
optical dome 180 may be optically transparent or translucent. Light emitted from theLED 190 may pass through theoptical dome 180 and be emitted to the outside. - In this case, the dome-shaped
optical dome 180 may refract light like a lens. For example, light emitted from theLED 190 may be refracted by theoptical dome 180 and thus may be dispersed. - As mentioned above, the
optical dome 180 may protect theLED 190 from external mechanical and/or chemical or electrical actions, as well as dispersing light emitted from theLED 190. - In the above description, the
optical dome 180 in the form of a silicon dome has been described, but thelight source 111 is not limited to including theoptical dome 180. For example, thelight source 111 may include a lens for dispersing light emitted from the LED. - The
substrate 112 may fix the plurality oflight sources 111 to prevent a change in the position of thelight source 111. Further, thesubstrate 112 may supply power, which is for thelight source 111 to emit light, to thelight source 111. - The
substrate 112 may support/fix the plurality oflight sources 111 and may be configured with a synthetic resin, tempered glass, or a printed circuit board (PCB) on which a conductive power supply line for supplying power to thelight source 111 is formed. - The
reflective sheet 120 may reflect light emitted from the plurality oflight sources 111 forward or in a direction close to the front. - In the
reflective sheet 120, a plurality of throughholes 120 a is formed at positions corresponding to each of the plurality oflight sources 111 of thelight source module 110. In addition, thelight source 111 of thelight source module 110 may pass through the throughhole 120 a and protrude to the front of thereflective sheet 120. Accordingly, the plurality oflight sources 111 may emit light in front of thereflective sheet 120. Thereflective sheet 120 may reflect light, which is emitted toward thereflective sheet 120 from the plurality oflight sources 111, to thediffuser plate 130. - A size and arrangement of the through-
holes 120 a may depend on a size and arrangement of thelight source 111. For example, based on a diameter of thelight source 111 being approximately 2.5 mm, a diameter of the throughholes 120 a may be appropriately 4.5 mm. The diameter of the throughholes 120 a may have an error margin of approximately ±20%, and may be between approximately 3.5 mm and 5.5 mm. In addition, a distance between the centers of the throughholes 120 a may be appropriately 11 mm. The distance between the centers of the throughholes 120 a may have an error margin of approximately ±20%, and may be between approximately 8.5 mm and 13.5 mm. - The
diffuser plate 130 may be provided in front of thelight source module 110 and/or thereflective sheet 120 and may evenly distribute the light emitted from thelight source 111 of thelight source module 110. - As described above, the plurality of
light sources 111 is located at equal intervals on the rear surface of thelight source apparatus 100. Accordingly, unevenness in luminance may occur according to the positions of the plurality oflight sources 111. - The
diffuser plate 130 may diffuse light emitted from the plurality oflight sources 111 within thediffuser plate 130 in order to remove unevenness in luminance caused by the plurality oflight sources 111. In other words, thediffuser plate 130 may uniformly emit uneven light of the plurality oflight sources 111 to the front surface. - The
optical sheet 140 may include various sheets for improving luminance and uniformity of luminance. For example, theoptical sheet 140 may include alight conversion sheet 141, adiffusion sheet 142, aprism sheet 143, and a reflectivepolarizing sheet 144. - The
light conversion sheet 141 may convert a wavelength of a portion of incident light. For example, thelight conversion sheet 141 may include a quantum dot (QD) material or a fluorescent material. Depending on the constituent material, thelight conversion sheet 141 may be referred to as a fluorescent sheet or a quantum dot sheet. - Quantum dots are nanometers (nm; 1/1,000,000,000 meter) of small sphere-shaped semiconductor particles, and the quantum dot includes about 2 nanometers [nm] to 10 [nm] of a core and a shell formed of zinc sulfide (ZnS). The core of the quantum dot may be formed of cadmium selenite (CdSe), cadmium telluride (CdTe), or cadmium sulfide (CdS).
- The quantum dot emits a particular wavelength of light when an electric field is applied or when absorbing high energy light. In this case, the wavelength of the emitted light may depend on the size of the quantum dot. The smaller quantum dot may emit the shorter wavelength of light, and the larger quantum dot may emit the longer wavelength of light. For example, a quantum dot having a diameter of approximately 2 nm may emit approximately blue light, a quantum dot having a diameter of approximately 3 nm may emit approximately green light, and a quantum dot having a diameter of approximately 6 nm may emit approximately red light.
- A material in which the quantum dot having the diameter of approximately 3 nm and the quantum dot having the diameter of approximately 6 nm are mixed may absorb blue light or ultraviolet light and emit green light and/or red light. For example, when blue light or ultraviolet light is incident on the
light conversion sheet 141 on which a quantum dot having the diameter of approximately 3 nm and a quantum dot having the diameter of approximately 6 nm are mixed, a portion of blue light or ultraviolet light may be converted into green light and/or red light, and another portion of the light may pass through thelight conversion sheet 141. As a result, white light in which blue light, green light, and/or red light are mixed may be emitted from thelight conversion sheet 141. - The fluorescent material may convert blue light into yellow light or orange light, or convert blue light into red light and/or green light.
- The
light conversion sheet 141 may include a yellow (YAG) phosphor that converts blue light to yellow light or orange light, or a red/green (RG) phosphor that converts blue light to red light and/or green light. For example, thelight conversion sheet 141 may include a K2SiF6 (KSF) phosphor or a K2TiF6 (KTF) phosphor. - The
diffusion sheet 142 may diffuse light to improve uniformity of light transmitted through thelight conversion sheet 141. - The
prism sheet 143 may deflect the light, which passes through thediffusion sheet 142, to be directed to the front of the light source apparatus 100 (for example, a normal direction of a plane defined by the light source apparatus). For example, light may be diffused in thediffusion sheet 142, and the light may be emitted in an oblique direction from thediffusion sheet 142. By using refraction of light, theprism sheet 143 may deflect light in a normal direction of a plane defined by theprism sheet 143. - The reflective
polarizing sheet 144 may transmit a portion of the incident light and reflect other portion of the incident light. For example, the reflectivepolarizing sheet 144 may transmit P-polarized light and reflect S-polarized light. In general, because the polarizing sheet absorbs polarized light, the luminance of the light source apparatus may be lowered. On the other hand, the reflectivepolarizing sheet 144 reflects polarized light, and thus the reflected light may be recycled in thelight source apparatus 100. - The order of lamination of the
optical sheet 140 is not limited to that shown inFIG. 4 . For example, theoptical sheet 140 may be laminated in such a way that the diffusion sheet 142-> the optical change sheet 141-> the prism sheet 143-> the reflectivepolarizing sheet 144 are sequentially laminated. Alternatively, the diffusion sheet 142-> the prism sheet 143-> the optical change sheet 141-> the reflectivepolarizing sheet 144 may be sequentially laminated. - In addition, the
optical sheet 140 is not limited to the sheet or film illustrated inFIG. 4 , and may include more various sheets or films, such as a protective sheet. -
FIG. 7 is a view of a travel path of light in the light source apparatus according to an exemplary embodiment of the present disclosure.FIG. 8 is a view of a travel path of light at a center portion and an edge portion of the light source apparatus according to an exemplary embodiment of the present disclosure.FIG. 9 is a view of a light conversion patch arranged on the edge portion of the light source apparatus according to an exemplary embodiment of the present disclosure. - Referring to
FIGS. 7 and 8 , thelight source apparatus 100 may include thelight source module 110, thereflective sheet 120, thediffuser plate 130, and/or theoptical sheet 140. - The
light source module 110 includes the plurality of pointlight sources 111. Light emitted from the plurality of pointlight sources 111 may be converted into uniform light while being transmitted through thediffuser plate 130 and/or theoptical sheet 140. - For example, as shown in
FIG. 7 , light L1 may be emitted from thelight source 111. Light L1 may include blue light having a wavelength of approximately 450 nm and 495 nm. - The light L1 may be transmitted through the
diffuser plate 130 and incident on theoptical sheet 140. The light L1 may be transmitted through theoptical sheet 140 or may be reflected from theoptical sheet 140. In addition, although not shown in the drawings, a portion of the light L1 may be absorbed by thediffuser plate 130 and/or theoptical sheet 140. The absorbed light may be converted into heat in thediffuser plate 130 and/or theoptical sheet 140. - A portion of the light L1, which is light L2, may be transmitted through the
optical sheet 140 and then be emitted to the outside of thelight source apparatus 100. Particularly, the light L2 emitted from thelight source apparatus 100 may be transmitted through thelight conversion sheet 141 included in theoptical sheet 140. A wavelength of a portion of the light 2 may be changed while being transmitted through thelight conversion sheet 141. - For example, a portion of the blue light contained in the light may be transmitted through the
light conversion sheet 141, and another portion of the blue light may be changed to red light and/or green light by thelight conversion sheet 141. Accordingly, a ratio of blue light of light transmitted through theoptical sheet 140 may be reduced, and a ratio of red light and/or green light may be increased. - A portion of the light L1, which is light L3, may be reflected by the
optical sheet 140. For example, the light L3 may be reflected by the reflectivepolarizing sheet 144. Accordingly, a portion of the light may be reflected by the reflectivepolarizing sheet 144, and thus the light absorbed by thepolarizing sheets liquid crystal panel 20 may be reduced, thereby increasing the light recycling efficiency of thedisplay apparatus 1 and thereby improving the luminance of thedisplay apparatus 1. - In addition, the light L3 reflected from the reflective
polarizing sheet 144 may be transmitted through thelight conversion sheet 141. For example, the light may be transmitted through thelight conversion sheet 141 before and after being reflected by the reflectivepolarizing sheet 144, respectively. Accordingly, the ratio of blue light of the light L3 reflected from the reflectivepolarizing sheet 144 may be further reduced, and the ratio of red light and/or green light may be further increased. - The light L3 may be moved toward the
reflective sheet 120, and reflected by thereflective sheet 120. - Light L4 reflected from the
reflective sheet 120 may be again transmitted through thediffuser plate 130 and incident on theoptical sheet 140. The light L4 may be transmitted through theoptical sheet 140 or may be reflected from theoptical sheet 140. - A portion of the light L4, which is light L5, may be transmitted through the
optical sheet 140, and emitted to the outside of thelight source apparatus 100. The light L5 may be transmitted through thelight conversion sheet 141 included in theoptical sheet 140. The ratio of blue light of the light L5 transmitted through thelight conversion sheet 141 may be further reduced, and the ratio of red light and/or green light may be further increased. - When the light is reflected by the reflective
polarizing sheet 144 and thereflective sheet 120, the light may be transmitted through thelight conversion sheet 141 several times, and thus the blue light may be converted into the red light and/or the green light. Therefore, the ratio of blue light, in the light L5 having been reflected a large number of times between the reflectivepolarizing sheet 144 and thereflective sheet 120, may be less than the ratio of blue light in the light 2 having been reflected a small number of times between the reflectivepolarizing sheet 144 and thereflective sheet 120. In addition, a ratio of red light and/or green light of the light L5 may be greater than a ratio of red light and/or green light of the light L2. - In other words, the light L2 having been reflected a small number of times is bluish in comparison with the light L5 having a large number of times, and the light L5 is yellowish in comparison with the light L2. The light L2 and the light L5 may be mixed with each other and the
light source apparatus 100 may emit white light in which the light L2 and the light L5 are mixed. In addition, the white light emitted from thelight source apparatus 100 may be incident on theliquid crystal panel 20. - At this time, a mixing ratio of the bluish light L2 and the
yellowish light 5 may vary according to a position of thelight source apparatus 100. - For example, as shown in
FIG. 8 , in various positions P1 and P2 of thelight source apparatus 100, the bluish light L2 and the yellowish light L5 may be mixed and the mixed light may be emitted from thelight source apparatus 100. - Light emitted from a first position P1 of a central portion of the
light source apparatus 100 may include the light L2 emitted from the light source 111 (where the number of times transmitted through the light conversion sheet is small), the light L5 reflected by the left reflective sheet 120 (where the number of times transmitted through the light conversion sheet is large), and the light L5 reflected by the rightreflective sheet 120 of the light source 111 (where the number of times transmitted through the light conversion sheet is large). - Light emitted from a second position P2 of an edge portion of the
light source apparatus 100 may include the light L2 emitted from the light source 111 (where the number of times transmitted through the light conversion sheet is small), and the light L5 reflected by the rightreflective sheet 120 of the light source 111 (where the number of times transmitted through the light conversion sheet is large). - Therefore, a ratio of bluish light contained in the light emitted from the first position P1 may be less than a ratio of bluish light contained in the light emitted from the second position P2. In other words, the light emitted from the edge portion of the
light source apparatus 100 is more bluish than the light emitted from the central portion of thelight source apparatus 100. - A user can relatively easily visually recognize a slight color difference between different locations on the
same display apparatus 1. In other words, the edge portion of thelight source apparatus 100 is more bluish than the center portion of thelight source apparatus 100, that is, an optical defect can be easily recognized by a user. - For example, when a blue (or green) image, such as an image of the sky or an image of a sports game (for example, golf) is displayed across the
screen 12, a user can easily recognize the optical defect at the edge portion of thedisplay apparatus 1. - As another example, when a white image is displayed across the
screen 12, such as a snowy snow scene image, a user can easily recognize the optical defect at the edge portion of thedisplay apparatus 1 as well. - In order to prevent or suppress the optical defects at the edge portion of the
display apparatus 1, alight conversion patch 200 including at least one of a yellow fluorescent material, a red/green fluorescent material, a yellow pigment, a red/green pigment, a yellow dye, a red/green dye, or a red/green quantum dot material may be applied, printed or coated on the edge portion of thelight source apparatus 100, as shown inFIG. 9 . - For example, on the edge portion of the
reflective sheet 120, thelight conversion patch 200 may be applied, printed, or coated. Thereflective sheet 120 may be divided into a first region representing an edge portion and a second region representing a central portion. Thelight conversion patch 200 may be applied, printed, or coated on the first region of thereflective sheet 120, and thelight conversion patch 200 may not be applied, printed, or coated on the second region of thereflective sheet 120. - As another example, on the edge portion of the
substrate 112, thelight conversion patch 200 may be applied, printed, or coated. Thesubstrate 112 may be divided into a first region representing an edge portion and a second region representing a central portion. Thelight conversion patch 200 may be applied, printed, or coated on the first region of thesubstrate 112, and thelight conversion patch 200 may not be applied, printed, or coated on the second region of thesubstrate 112. - The
light conversion patch 200 may absorb a portion of blue light among incident light, and may convert a portion of the absorbed blue light into yellow light, red light, or green light. In addition, thelight conversion patch 200 may absorb blue light among incident light and may reflect yellow light, red light, or green light. - Accordingly, the ratio of blue light of the light, which is transmitted through the
light conversion patch 200, may be reduced, and the ratio of yellow light, red light, or green light of the light may be increased. - As mentioned above, the light emitted from the second position P2 of the edge portion of the
light source apparatus 100 may include the light L2 emitted from the light source 111 (where the number of times transmitted through the light conversion sheet is small), and the light L5 reflected by the rightreflective sheet 120 of thelight source 111. - The
light conversion patch 200 may be applied, printed, or coated on the edge portion of thereflective sheet 120. During the light L5 is reflected from the edge portion of thereflective sheet 120, a portion of blue light included in the light L5 may be converted into yellow light, red light, or green light by thelight conversion patch 200. Accordingly, the ratio of blue light in the light L5 may be reduced, and the ratio of yellow light may be increased. In other words, the light L5 may be more yellowish. - Accordingly, the ratio of bluish light included in the light emitted from the second position P2 may be reduced, and the light emitted from the edge portion of the
light source apparatus 100 may be less bluish. Further, a difference between the ratio of blue light at the edge portion of thelight source apparatus 100 and the ratio of blue light at the center portion of thelight source apparatus 100 may be reduced to an extent that the user cannot recognize. - The
light conversion patch 200 in the various types or in the various pattern may be applied, printed or coated on the edge portion of thereflective sheet 120 or the edge portion of thesubstrate 112. - For example, the
light conversion patch 200 may be applied, printed or coated on the edge portion of thereflective sheet 120 to surround the through-holes 120 a, as shown inFIG. 9 . - As mentioned above, the
reflective sheet 120 may be divided into the first region representing the edge portion and the second region representing the central portion. In the first region of thereflective sheet 120, a through hole, around which thelight conversion patch 200 is applied, printed or coated, may be disposed. In the second region of thereflective sheet 120, a through hole, around which thelight conversion patch 200 is not applied, printed or coated, may be disposed. - However, the type or pattern of the
light conversion patch 200 as shown inFIG. 9 is only an example of applying, printing or coating thelight conversion patch 200, and thus the type or pattern of thelight conversion patch 200 is not limited thereto. - The
light conversion patch 200 may be applied, printed, or coated to surround thelight source 111 on the edge portion of thesubstrate 112. Thelight conversion patch 200 arranged on the edge portion of thesubstrate 112 may be exposed through the throughhole 120 a. - Hereinafter various types or patterns in which the
light conversion patch 200 is applied, printed or coated on the edge portion of thelight source apparatus 100 will be described. -
FIG. 10 is a view of an example of an arrangement of the light conversion patch of left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 10 , the throughhole 120 a, through which the light from the plurality oflight sources 111 passes, is formed on thereflective sheet 120. Further, on the edge portion of thereflective sheet 120, thelight conversion patch 200 may be applied, printed or coated (hereinafter referred to as “arranged”). - The
light conversion patch 200 may include a light conversion material that absorbs a portion of blue light among incident light and converts a portion of the absorbed blue light into yellow light, red light, or green light. For example, thelight conversion patch 200 may include at least one of a yellow fluorescent material, a red fluorescent material, a green fluorescent material, a red quantum dot material, or a green quantum dot material. - In addition, the
light conversion patch 200 may include a light conversion material that absorbs a portion of blue light and reflects yellow light, red light, or green light among incident light. For example, thelight conversion patch 200 may include at least one of a yellow pigment, a red pigment, a green pigment, a yellow dye, a red dye, or a green dye. - The
light conversion patch 200 may be approximately circular or elliptical. In addition, on the edge portion of thereflective sheet 120, thelight conversion patch 200 may be arranged around the throughholes 120 a to surround the throughholes 120 a. - The
light conversion patch 200 may include a plurality of firstlight conversion patches 210 arranged around a first throughhole 121 disposed in a first column in left andright edges 120 b of thereflective sheet 120. - A size and/or number of the first
light conversion patch 210 may depend on the arrangement and size of the through-holes 120 a. In response to an increase in the distance between the throughholes 120 a and an increase in the size of the throughholes 120 a, the size of the firstlight conversion patches 210 may be increased or the number of firstlight conversion patches 210 may be increased. - For example, when the distance between the centers of the through-
holes 120 a is approximately 11.0 mm and the diameter of the through-holes 120 a is approximately 4.5 mm, eight firstlight conversion patches 210 may be arranged around the first through-hole 121. Each of the eight firstlight conversion patches 210 may have a diameter of approximately 1.0 mm to 2.0 mm. The diameter of each of the firstlight conversion patches 210 may approximately 1.5 mm, and the diameter thereof may have an error margin of ±20%. In addition, according to an exemplary embodiment, the diameter of each of the firstlight conversion patches 210 may be approximately 1.3 mm or 1.1 mm. - The plurality of first
light conversion patches 210 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the first throughhole 121. In addition, the plurality of firstlight conversion patches 210 may be arranged at approximately equal angular intervals with respect to a virtual central point in the first throughhole 121. For example, the eight firstlight conversion patches 210 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the first throughhole 121. - The
light conversion patch 200 may include a plurality of secondlight conversion patches 220 arranged around a second throughhole 122 disposed in a second column in the left andright edges 120 b of thereflective sheet 120. - A size and/or number of the second
light conversion patches 220 may depend on the arrangement and size of the through-holes 120 a. For example, when the distance between the centers of the through-holes 120 a is approximately 11.0 mm and the diameter of the through-holes 120 a is approximately 4.5 mm, four secondlight conversion patches 220 may be arranged around the second through-hole 122. Each of the four secondlight conversion patches 220 may have a diameter of approximately 0.8 mm to 1.5 mm. The diameter of each of the secondlight conversion patches 220 may approximately 1.3 mm, and the diameter thereof may have an error margin of ±20%. In addition, according to an exemplary embodiment, the diameter of each of the secondlight conversion patches 220 may be approximately 1.2 mm, 1.1 mm, or 0.9 mm. - The plurality of second
light conversion patches 220 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the second throughhole 122. In addition, the plurality of secondlight conversion patches 220 may be arranged at approximately equal angular intervals with respect to a virtual central point in the second throughhole 122. For example, the four secondlight conversion patches 220 may be arranged at an angular interval of approximately 90 degrees with respect to the virtual central point in the second throughhole 122. - The
light conversion patch 200 may include a plurality of thirdlight conversion patches 230 arranged around a third throughhole 123 disposed in a third column in the left and right edges of thereflective sheet 120. - A size and/or number of the third
light conversion patches 230 may depend on the arrangement and size of the through-holes 120 a. For example, when the distance between the centers of the through-holes 120 a is approximately 11.0 mm and the diameter of the through-holes 120 a is approximately 4.5 mm, three thirdlight conversion patches 230 may be arranged around the third through-hole 123. Each of the three thirdlight conversion patches 230 may have a diameter of approximately 0.6 mm to 1.3 mm. The diameter of each of the thirdlight conversion patches 230 may approximately 1.1 mm, and the diameter thereof may have an error margin of ±20%. In addition, according to an exemplary embodiment, the diameter of each of the thirdlight conversion patches 230 may be approximately 0.9 mm or 0.7 mm. - The plurality of third
light conversion patches 230 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the third throughhole 123. For example, the three thirdlight conversion patches 230 may be arranged at an angular interval of approximately 45 degrees or 90 degrees with respect to the virtual central point in the third throughhole 123. - The diameters of the first
light conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 may be variously combined. For example, the diameter of the firstlight conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 may be approximately 1.5 mm, approximately 1.3 mm, and approximately 1.1 mm, respectively. As another example, the diameter of the firstlight conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 may be approximately 1.3 mm, approximately 1.2 mm, and approximately 1.1 mm, respectively. As another example, the diameter of the firstlight conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 may be approximately 1.3 mm, approximately 1.1 mm, and approximately 0.9 mm, respectively. As another example, the diameter of the firstlight conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 may be approximately 1.1 mm, approximately 0.9 mm, and approximately 0.7 mm, respectively. - The
light conversion patch 200 may not be only arranged around the throughholes 120 a of the edge portion of thereflective sheet 120, but also arranged between the throughholes 120 a and the throughholes 120 a of the edge portion of thereflective sheet 120. - For example, between the first through
hole 121 of thereflective sheet 120 and the second throughhole 122 of thereflective sheet 120, three light conversion patches may be arranged. A diameter of the light conversion patch arranged between the first throughhole 121 and the second throughhole 122 may be between approximately 1.0 mm to 2.0 mm, and appropriately 1.5 mm. - Between the second through
hole 122 of thereflective sheet 120 and the third throughhole 123 of thereflective sheet 120, three light conversion patches may be arranged. A diameter of the light conversion patch arranged between the second throughhole 122 and the third throughhole 123 may be between approximately 0.8 mm to 1.5 mm, and appropriately 1.3 mm. - Three light conversion patches may be arranged on an inside of the third through
hole 123 of thereflective sheet 120. A diameter of the light conversion patch arranged inside the third throughhole 123 may be between approximately 0.5 mm and 1.1 mm, and appropriately approximately 0.9 mm. - As described above, at the right and left edge portions of the
reflective sheet 120, the firstlight conversion patch 210, the secondlight conversion patches 220 and/or the thirdlight conversion patch 230 may be arranged. - The size of each of the first
light conversion patches 210 arranged at the outermost side of the left and right edge portions of thereflective sheet 120 is greater than the size of each of the secondlight conversion patches 220 arranged more inside than the firstlight conversion patches 210. The distance between the firstlight conversion patches 210 is less than the distance between the secondlight conversion patches 220. Further, the number of the firstlight conversion patches 210 is greater than the number of the secondlight conversion patches 220. - The size of each of the second
light conversion patches 220 is greater than the size of each of the thirdlight conversion patches 230 arranged further inside than the secondlight conversion patches 220. The distance between the secondlight conversion patches 220 is less than the distance between the thirdlight conversion patches 230. Further, the number of the secondlight conversion patches 220 is greater than the number of the thirdlight conversion patches 230. - As mentioned above, as the distance from the left and
right edges 120 b of thereflective sheet 120 to thelight conversion patch 200 is increased, the size of thelight conversion patch 200 may be reduced, the distance between thelight conversion patches 200 may be increased, and the number oflight conversion patches 200 may be reduced. In addition, as the distance from the left andright edges 120 b of thereflective sheet 120 to thelight conversion patch 200 is increased, a ratio of an area occupied by thelight conversion patch 200 may be reduced. - Accordingly, when the light is reflected by the edge portion of the
reflective sheet 120, the ratio of blue light contained in the light may be reduced, and the ratio of yellow light may be further increased. It is possible to relieve a difficulty in which an amount of light L5, which has the large number of times transmitted through the light conversion sheet, in the edge portion of thelight source apparatus 100 is less than an amount of light L5 in the central portion of thelight source apparatus 100. Further, a defect, in which the edge portion of thelight source apparatus 100 is more bluish than the central portion of thelight source apparatus 100 may be eliminated. -
FIG. 11 is a view of an example of an arrangement of the light conversion patch of a corner portion of the light source apparatus according to an exemplary embodiment of the present disclosure. -
FIG. 10 illustrates the arrangement of thelight conversion patch 200 at the left and right edges of thelight source apparatus 100, but thelight conversion patch 200 may be also arranged at upper and lower edges of thelight source apparatus 100. Further, thelight conversion patch 200 may be arranged at a corner portion of thelight source apparatus 100. - As illustrated in
FIG. 11 , on thereflective sheet 120, the plurality of through-holes 120 a is formed. In addition, thelight conversion patch 200 may be applied, printed, or coated on the left and right edge portions, upper and lower edge portions, and corner portions of thereflective sheet 120. Thelight conversion patch 200 may be the same as thelight conversion patch 200 described inFIG. 10 . - The
light conversion patch 200 may include firstlight conversion patches 210 arranged around the first throughhole 121 in the left and right edge portions of thereflective sheet 120, secondlight conversion patches 220 arranged around the second throughhole 122, and thirdlight conversion patches 230 arranged around the third throughhole 123. - A description of the first
light conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 will be replaced with the description of the firstlight conversion patches 210, the secondlight conversion patches 220, and the thirdlight conversion patches 230 described with reference toFIG. 10 . - The
light conversion patch 200 may include a plurality of fourthlight conversion patches 240 arranged around a fourth throughhole 124 disposed in a first row from the upper andlower edges 120 c of thereflective sheet 120. For example, eight fourthlight conversion patches 240 may be arranged around the fourth through-hole 124. Each of the eight fourthlight conversion patches 240 may have a diameter of approximately 1.1 mm to 2.1 mm. The diameter of each of the eight fourthlight conversion patches 240 may appropriately be 1.6 mm, and the diameter thereof may have an error margin of ±20%. - The plurality of fourth
light conversion patches 240 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the fourth throughhole 124. In addition, the plurality of fourthlight conversion patches 240 may be arranged at approximately equal angular intervals with respect to a virtual central point in the fourth throughhole 124. For example, the eight fourthlight conversion patches 240 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the fourth throughhole 124. - The
light conversion patch 200 may include a plurality of fifthlight conversion patches 250 arranged around a fifth throughhole 125 disposed in a second row from the upper andlower edges 120 c of thereflective sheet 120. For example, four fifthlight conversion patches 250 may be arranged around the fifth throughhole 125. Each of the four fifthlight conversion patches 250 may have a diameter of approximately 0.9 mm to 1.6 mm. The diameter of each of the fifthlight conversion patches 250 may appropriately be 1.4 mm, and the diameter thereof may have an error margin of ±20%. - The plurality of fifth
light conversion patches 250 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the fifth throughhole 125. In addition, the plurality of fifthlight conversion patches 250 may be arranged at approximately equal angular intervals with respect to a virtual central point in the fifth throughhole 125. For example, the four fifthlight conversion patches 250 may be arranged at an angular interval of approximately 90 degrees with respect to the virtual central point in the fifth throughhole 125. - The
light conversion patch 200 may include a plurality of sixthlight conversion patches 260 arranged around a sixth throughhole 126 disposed in a third row from the upper and lower edge portion of thereflective sheet 120. For example, three sixthlight conversion patches 260 may be arranged around the sixth throughhole 126. Each of the three sixthlight conversion patches 260 may have a diameter of approximately 0.7 mm to 1.4 mm. The diameter of each of the sixthlight conversion patches 260 may appropriately be 1.2 mm, and the diameter thereof may have an error margin of ±20%. - The plurality of sixth
light conversion patches 260 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the sixth throughhole 126. For example, the three sixthlight conversion patches 260 may be arranged at an angular interval of approximately 45 degrees or approximately 90 degrees with respect to the virtual central point in the sixth throughhole 126. - In addition, a seventh through
hole 127 is arranged at the corner portion of thereflective sheet 120, and the seventh throughhole 127 is arranged closest to the corner of thereflective sheet 120. In other words, a distance between the corner of thereflective sheet 120 and the seventh throughhole 127 may be minimized such that the distance between the corner of thereflective sheet 120 and the seventh through hole is less than the distance between the corner of thereflection sheet 120 and the other through holes. A plurality of seventhlight conversion patches 270 may be arranged around the seventh throughhole 127. For example, eight seventhlight conversion patches 270 may be arranged around the seventh throughhole 127. Each of the eight seventhlight conversion patches 270 may have a diameter of approximately 1.5 mm to 2.5 mm. The diameter of each of the seventhlight conversion patches 270 may appropriately be 2.0 mm, and the diameter thereof may have an error margin of ±20%. - The plurality of seventh
light conversion patches 270 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the seventh throughhole 127. In addition, the plurality of seventhlight conversion patches 270 may be arranged at approximately equal angular intervals with respect to a virtual central point in the seventh throughhole 127. For example, the eight seventhlight conversion patches 270 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the seventh throughhole 127. - As described above, in the upper and lower edge portions of the
reflective sheet 120, the fourthlight conversion patches 240, the fifthlight conversion patches 250, and/or the sixthlight conversion patches 260 may be arranged. - The size of each of the fourth
light conversion patches 240 arranged at the outermost side of the upper and lower edge portions of thereflective sheet 120 is greater than the size of each of the fifth and sixthlight conversion patches light conversion patches 210. The distance between the fourthlight conversion patches 240 is less than the distance between the fifth and sixthlight conversion patches light conversion patches 240 is greater than the number of the fifth and sixthlight conversion patches - As mentioned above, as the distance from the upper and
lower edges 120 c of thereflective sheet 120 to thelight conversion patch 200 is increased, the size of thelight conversion patch 200 may be reduced, the distance between thelight conversion patches 200 may be increased, and the number oflight conversion patches 200 may be reduced. In addition, a ratio of an area occupied by thelight conversion patch 200 may be reduced as the distance from outermost side of the upper and lower edge portions towards the center portion of thereflective sheet 120 is increased. - The size of the
light conversion patches reflective sheet 120 may be different from the size of thelight conversion patches reflective sheet 120. For example, the diameter of each of the fourthlight conversion patches 240 arranged at the outermost side of the upper and lower edge portions of thereflective sheet 120 may be greater than the diameter of each of the firstlight conversion patches 210 arranged at the outermost side of the left and right edge portions of thereflective sheet 120. Further, the diameter of each of the fifth and sixthlight conversion patches reflective sheet 120 may be greater than the diameter of each of the second and thirdlight conversion patches reflective sheet 120. - The seventh
light conversion patch 270 may be arranged at the corner portion of thereflective sheet 120. - The size of the seventh
light conversion patches 270 arranged at the corner portions of thereflective sheet 120 may be different from the size of thelight conversion patches reflective sheet 120. For example, the diameter of the seventhlight conversion patches 270 may be greater than the diameter of the first and fourthlight conversion patches reflective sheet 120. - Accordingly, when the light is reflected by the corner portion of the
reflective sheet 120, the ratio of blue light contained in the light may be reduced, and the ratio of yellow light may be further increased. It is possible to relieve a defect in which an amount of light L5, which has the large number of times transmitted through the light conversion sheet, in the corner portion of thelight source apparatus 100 is less than an amount of light L5 in the central portion of thelight source apparatus 100. Further, a defect (e.g., optical defect), in which the corner portion of thelight source apparatus 100 is more bluish than the central portion of thelight source apparatus 100 may be eliminated. - In the above description, the size of the light conversion patches arranged at the outermost side of the left and right/upper and lower edge portions of the
reflective sheet 120 is different from the size of the light conversion patches arranged at the inner side of the outermost side, and the distance between the light conversion patches arranged at the outermost side of the left and right/upper and lower edge portions of thereflective sheet 120 is different from the distance between the light conversion patches arranged at the inner side of the outermost side. However, the arrangement of the light conversion patches is not limited to thereto. -
FIG. 12 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 12 , alight conversion patch 200 may be arranged around the throughhole 120 a at the edge portion of thereflective sheet 120. Thelight conversion patch 200 may be the same as the light conversion patch described with reference toFIG. 10 . - The
light conversion patch 200 may include a plurality of firstlight conversion patches 210 arranged around a first throughhole 121 disposed in a first column in left andright edges 120 b of thereflective sheet 120. The size, arrangement, and number of the firstlight conversion patches 210 may be the same as the firstlight conversion patches 210 shown inFIG. 10 . For example, the eight firstlight conversion patches 210 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the first throughhole 121. - The
light conversion patch 200 may include a plurality of secondlight conversion patches 220 arranged around a second throughhole 122 disposed in a second column in the left andright edges 120 b of thereflective sheet 120. - Unlike the second
light conversion patches 220 shown inFIG. 10 , the size of the secondlight conversion patches 220 shown inFIG. 12 may be approximately equal to the size of the firstlight conversion patches 210. In other words, the diameter of the secondlight conversion patches 220 may be approximately equal to the diameter of the firstlight conversion patches 210. For example, the diameter of the firstlight conversion patches 210 may be approximately 1.5 mm, and the diameter of the secondlight conversion patches 220 may also be approximately 1.5 mm. - The plurality of second
light conversion patches 220 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the second throughhole 122, and the number of the secondlight conversion patches 220 may be the same as the number of the firstlight conversion patches 210. For example, the eight secondlight conversion patches 220 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the second throughhole 122. - The
light conversion patch 200 may include a plurality of thirdlight conversion patches 230 arranged around a third throughhole 123 disposed in a third column in the left andright edges 120 b of thereflective sheet 120. - Unlike the third
light conversion patches 230 shown inFIG. 10 , the size of the thirdlight conversion patches 230 shown inFIG. 12 may be approximately equal to the size of the firstlight conversion patches 210. In other words, the diameter of the thirdlight conversion patches 230 may be approximately equal to the diameter of the firstlight conversion patches 210. For example, based on the diameter of the firstlight conversion patches 210 may be approximately 1.5 mm, and the diameter of the thirdlight conversion patches 230 may also be approximately 1.5 mm. - The plurality of third
light conversion patches 230 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the third throughhole 123, and the number of the thirdlight conversion patches 230 may be the same as the number of the firstlight conversion patches 210. For example, the eight thirdlight conversion patches 230 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the third throughhole 123. - Although not shown in
FIG. 12 , thelight conversion patch 200 may include a plurality of fourth light conversion patches arranged around a fourth through hole disposed in a first row in the upper andlower edges 120 c of thereflective sheet 120, a plurality of fifth light conversion patches arranged around a fifth through hole disposed in a second row, or a plurality of sixth light conversion patches arranged around a sixth through hole disposed in a third row. - The size of the fourth, fifth, and sixth light conversion patches may be the same as the size of the first
light conversion patches 210, and the number of the fourth, fifth, and sixth light conversion patches may be the same as the number of the firstlight conversion patches 210. - The
light conversion patch 200 may include a plurality of seventh light conversion patches arranged around a seventh through hole disposed at the corner portion of the reflective sheet, and the size, number, and arrangement of the seventh light conversion patches may be the same as the size, number, and arrangement of the firstlight conversion patches 210. - Further, unlike that illustrated in
FIG. 12 , the secondlight conversion patches 220 may be omitted, or the thirdlight conversion patches 230 may be omitted, or the second and thirdlight conversion patches light conversion patch 200 may include only the firstlight conversion patches 210, or may include the first and secondlight conversion patches light conversion patches -
FIG. 13 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 13 , alight conversion patch 200 may be arranged around the throughhole 120 a at the edge portion of thereflective sheet 120. Thelight conversion patch 200 may be the same as the light conversion patch described with reference toFIG. 10 . - The
light conversion patch 200 may include a plurality of firstlight conversion patches 210 arranged around a first throughhole 121 disposed in a first column from left andright edges 120 b of thereflective sheet 120. The size, arrangement, and number of the firstlight conversion patches 210 may be the same as the firstlight conversion patches 210 shown inFIG. 10 . For example, the eight firstlight conversion patches 210 may be arranged at an angular interval of approximately 45 degrees with respect to a virtual central point in the first throughhole 121. - The
light conversion patch 200 may include a plurality of secondlight conversion patches 220 arranged around a second throughhole 122 disposed in a second column from the left andright edges 120 b of thereflective sheet 120. - Unlike the second
light conversion patches 220 shown inFIG. 10 , the size of the secondlight conversion patches 220 shown inFIG. 13 may be approximately equal to the size of the firstlight conversion patches 210. For example, the diameter of the firstlight conversion patches 210 may be approximately 1.5 mm, and the diameter of the secondlight conversion patches 220 may also be approximately 1.5 mm. - The number of the second
light conversion patches 220 may be less than the number of the firstlight conversion patches 210, and the plurality of secondlight conversion patches 220 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the second throughhole 122. For example, the eight secondlight conversion patches 220 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the second throughhole 122. - The
light conversion patch 200 may include a plurality of thirdlight conversion patches 230 arranged around a third throughhole 123 disposed in a third column from the left andright edges 120 b of thereflective sheet 120. - Unlike the third
light conversion patches 230 shown inFIG. 10 , the size of the thirdlight conversion patches 230 shown inFIG. 13 may be approximately equal to the size of the firstlight conversion patches 210. For example, the diameter of the firstlight conversion patches 210 may be approximately 1.5 mm, and the diameter of the thirdlight conversion patches 230 may also be approximately 1.5 mm. - The number of the third
light conversion patches 230 may be less than the number of the secondlight conversion patches 220, and the plurality of thirdlight conversion patches 230 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the third throughhole 123. For example, the three thirdlight conversion patches 230 may be arranged at an angular interval of approximately 90 degrees or approximately 180 degrees with respect to the virtual central point in the third throughhole 123. - Although not shown in
FIG. 13 , thelight conversion patch 200 may include a plurality of fourth light conversion patches, a plurality of fifth light conversion patches or a plurality of sixth light conversion patches. - The size of the fourth, fifth, and sixth light conversion patches may be the same as the size of the first
light conversion patches 210. - The number and arrangement of the fourth light conversion patches may be the same as the number and arrangement of the first
light conversion patches 210. The number and arrangement of the fifth light conversion patches may be the same as the number and arrangement of the secondlight conversion patches 220. The number and arrangement of the sixth light conversion patches may be the same as the number and arrangement of the fifthlight conversion patches 250. - The
light conversion patch 200 may include a plurality of seventh light conversion patches arranged around a seventh through hole disposed at the corner portion of the reflective sheet, and the size, number, and arrangement of the seventh light conversion patches may be the same as the size, number, and arrangement of the firstlight conversion patches 210. -
FIG. 14 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 14 , alight conversion patch 200 may be arranged around the throughhole 120 a at the edge portion of thereflective sheet 120. Thelight conversion patch 200 may be the same as the light conversion patch described with reference toFIG. 10 . - The
light conversion patch 200 may include a plurality of firstlight conversion patches 210 arranged around a first throughhole 121 disposed in a first column from left andright edges 120 b of thereflective sheet 120. The size, arrangement, and number of the firstlight conversion patches 210 may be the same as the firstlight conversion patches 210 shown inFIG. 10 . For example, the eight firstlight conversion patches 210 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the first throughhole 121. - The
light conversion patch 200 may include a plurality of secondlight conversion patches 220 arranged around a second throughhole 122 disposed in a second column from the left andright edges 120 b of thereflective sheet 120. - The size of the second
light conversion patches 220 may be less than the size of the firstlight conversion patches 210. For example, based on the diameter of the firstlight conversion patches 210 being approximately 1.5 mm, the diameter of the secondlight conversion patches 220 may also be approximately 1.3 mm. - Unlike the second
light conversion patches 220 shown inFIG. 10 , the number of the secondlight conversion patches 220 shown inFIG. 14 may be the same as the number of the firstlight conversion patches 210. The plurality of secondlight conversion patches 220 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the second throughhole 122. For example, the eight secondlight conversion patches 220 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the second throughhole 122. - The
light conversion patch 200 may include a plurality of thirdlight conversion patches 230 arranged around a third throughhole 123 disposed in a third column from the left andright edges 120 b of thereflective sheet 120. - The size of the third
light conversion patches 230 may be less than the size of the secondlight conversion patches 220. For example, the diameter of the secondlight conversion patches 220 may be approximately 1.3 mm, and the diameter of the thirdlight conversion patches 230 may also be approximately 1.1 mm. - Unlike the third
light conversion patches 230 shown inFIG. 10 , the number of the thirdlight conversion patches 230 shown inFIG. 14 may be the same as the number of the first and secondlight conversion patches light conversion patches 230 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the third throughhole 123. For example, the eight thirdlight conversion patches 230 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the third throughhole 123. - Although not shown in
FIG. 14 , thelight conversion patch 200 may include a plurality of fourth light conversion patches, a plurality of fifth light conversion patches or a plurality of sixth light conversion patches. - The size of the fourth light conversion patches may be the same as the size of the first
light conversion patches 210, the size of the fifth light conversion patches may be the same as the size of the secondlight conversion patches 220, and the size of the sixth light conversion patches may be the same as the size of the fifthlight conversion patches 250. - The number and arrangement of the fourth, fifth, and sixth light conversion patches may be the same as the number and arrangement of the first
light conversion patch 210. - The
light conversion patch 200 may include a plurality of seventh light conversion patches arranged around a seventh through hole disposed at the corner portion of the reflective sheet, and the size, number, and arrangement of the seventh light conversion patches may be the same as the size, number, and arrangement of the firstlight conversion patches 210. -
FIG. 15 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 15 , alight conversion patch 200 may be arranged around a through hole at an edge portion of thereflective sheet 120. - The
light conversion patch 200 may include a light conversion material that absorbs a portion of blue light among incident light and converts a portion of the absorbed blue light into yellow light, red light, or green light. In addition, thelight conversion patch 200 may include a light conversion material that absorbs a portion of blue light and reflects yellow light, red light, or green light among incident light. - The
light conversion patch 200 may be approximately a quadrangle. However, the shape of thelight conversion patch 200 is not limited to a quadrangle, and thus the shape of thelight conversion patch 200 may be a polygon including a triangle, a pentagon, or a hexagon. - The
light conversion patch 200 may include a plurality of firstlight conversion patches 210 arranged around a first throughhole 121 disposed in a first column from the left andright edges 120 b of thereflective sheet 120. The arrangement, and number of the firstlight conversion patches 210 may be the same as the firstlight conversion patches 210 shown inFIG. 10 . For example, the eight firstlight conversion patches 210 may be arranged at an angular interval of approximately 45 degrees with respect to the virtual central point in the first throughhole 121. - Each of the first
light conversion patches 210 may be a square having one side of approximately 1.5 mm. - The
light conversion patch 200 may include a plurality of secondlight conversion patches 220 arranged around a second throughhole 122 disposed in a second column in the left andright edges 120 b of thereflective sheet 120. - The size of the second
light conversion patches 220 may be less than the size of the firstlight conversion patches 210. For example, the secondlight conversion patches 220 may have a square shape including a side of approximately 1.3 mm. - The number of the second
light conversion patches 220 may be less than the number of the firstlight conversion patches 210, and the plurality of secondlight conversion patches 220 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the second throughhole 122. For example, the four secondlight conversion patches 220 may be arranged at an angular interval of approximately 90 degrees with respect to the virtual central point in the second throughhole 122. - The
light conversion patch 200 may include a plurality of thirdlight conversion patches 230 arranged around a third throughhole 123 disposed in a third column from the left andright edges 120 b of thereflective sheet 120. - The size of the third
light conversion patches 230 may be less than the size of the secondlight conversion patches 220. For example, the thirdlight conversion patches 230 may have a square shape including a side of approximately 1.1 mm. - The number of the third
light conversion patches 230 may be less than the number of the secondlight conversion patches 220, and the plurality of thirdlight conversion patches 230 may be arranged at approximately equal intervals along a circumference of a virtual circle surrounding the second throughhole 122. For example, the three thirdlight conversion patches 230 may be arranged at an angular interval of approximately 90 degrees or approximately 180 degrees with respect to the virtual central point in the third throughhole 123. - Although not shown in
FIG. 15 , thelight conversion patch 200 may include a plurality of fourth light conversion patches, a plurality of fifth light conversion patches or a plurality of sixth light conversion patches. Each of the fourth, fifth, and sixth light conversion patches may be formed in a polygon shape including a quadrangle, a triangle, a pentagon, or a hexagon. - The size, number, and arrangement of the fourth light conversion patches may be the same as the size, number, and arrangement of the first
light conversion patches 210. The size, number, and arrangement of the fifth light conversion patches may be the same as the size, number, and arrangement of the secondlight conversion patches 220. The size, number, and arrangement of the sixth light conversion patches may be the same as the size, number, and arrangement of the fifthlight conversion patches 250. - The
light conversion patch 200 may include a plurality of seventh light conversion patches arranged around a seventh through hole disposed at the corner portion of the reflective sheet, and the size, number, and arrangement of the seventh light conversion patches may be the same as the size, number, and arrangement of the firstlight conversion patches 210. -
FIG. 16 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 16 , alight conversion patch 200 may be arranged around a through hole at an edge portion of thereflective sheet 120. - The
light conversion patch 200 may include a light conversion material that absorbs a portion of blue light among incident light and converts a portion of the absorbed blue light into yellow light, red light, or green light. In addition, thelight conversion patch 200 may include a light conversion material that absorbs a portion of blue light and reflects yellow light, red light, or green light among incident light. - The
light conversion patch 200 may have a shape that approximately forms ring surrounding the throughholes 120 a. InFIG. 16 , thelight conversion patch 200 having a substantially ring shape is illustrated, but is not limited thereto. For example, thelight conversion patch 200 may be formed in various ring shapes surrounding the through holes, such as an oval ring, a square ring, a pentagonal ring, and a hexagonal ring. - The
light conversion patch 200 may include a plurality of firstlight conversion bands 310 arranged around a first throughhole 121 disposed in a first column from the left andright edges 120 b of thereflective sheet 120. For example, the firstlight conversion bands 310 may be formed in a ring shape having a width of approximately 1.5 mm. - The
light conversion patch 200 may include a plurality of secondlight conversion bands 320 arranged around a second throughhole 122 disposed in a second column from the left andright edges 120 b of thereflective sheet 120. The shape, size and number of the secondlight conversion bands 320 may be the same as the shape, size and number of the firstlight conversion bands 310. For example, the secondlight conversion bands 320 may be formed in a ring shape having a width of approximately 1.5 mm. - The
light conversion patch 200 may include a plurality of thirdlight conversion bands 330 arranged around a third throughhole 123 disposed in a third column from the left andright edges 120 b of thereflective sheet 120. The shape, size and number of the thirdlight conversion bands 330 may be the same as the shape, size and number of the firstlight conversion bands 310. For example, the thirdlight conversion bands 330 may be formed in a ring shape having a width of approximately 1.5 mm. - Although not shown in
FIG. 16 , thelight conversion patch 200 may further include a plurality of fourth light conversion bands surrounding a fourth through hole, a plurality of fifth light conversion bands surrounding a fifth through hole, a plurality of sixth light conversion bands surrounding a sixth through hole, or a plurality of seventh light conversion bands surrounding a seventh through hole. - In addition, unlike that shown in
FIG. 16 , the secondlight conversion bands 320 may be omitted, or the thirdlight conversion bands 330 may be omitted, or the second and thirdlight conversion bands light conversion patch 200 may include only the firstlight conversion bands 310, may include the first and secondlight conversion bands light conversion bands - During the light is reflected by the light conversion bands arranged at the edge portion of the
reflective sheet 120, the ratio of blue light contained in the light may be reduced, and the ratio of yellow light may be further increased. Further, a defect (e.g., optical defect), in which the edge portion of thelight source apparatus 100 is more bluish than the central portion of thelight source apparatus 100 may be eliminated. -
FIG. 17 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 17 , alight conversion patch 200 including a light conversion material may be arranged around a through hole at an edge portion of thereflective sheet 120. - The
light conversion patch 200 may include a plurality of firstlight conversion bands 310 arranged around a first throughhole 121 disposed in a first column in left andright edges 120 b of thereflective sheet 120. For example, the firstlight conversion bands 310 may be formed in a ring shape having a width of approximately 1.5 mm. - The
light conversion patch 200 may include a plurality of secondlight conversion bands 320 arranged around a second throughhole 122 disposed in a second column in left andright edges 120 b of thereflective sheet 120. The size of the secondlight conversion bands 320 may be less than the size of the firstlight conversion bands 310. For example, the secondlight conversion bands 320 may be formed in a ring shape having a width of approximately 1.3 mm. - The
light conversion patch 200 may include a plurality of thirdlight conversion bands 330 arranged around a third throughhole 123 disposed in a third column in left andright edges 120 b of thereflective sheet 120. The size of the thirdlight conversion bands 330 may be less than the size of the secondlight conversion bands 320. For example, the thirdlight conversion bands 330 may be formed in a ring shape having a width of approximately 1.1 mm. - As mentioned above, at the left and right edge portions of the
reflective sheet 120, the firstlight conversion bands 310, the secondlight conversion bands 320 and/or the thirdlight conversion bands 330 may be arranged. The width of the firstlight conversion bands 310 may be greater than the width of the secondlight conversion bands 320, and the width of the secondlight conversion bands 320 may be greater than the width of the thirdlight conversion bands 330. - Although not shown in
FIG. 17 , the light conversion patch 300 may further include a plurality of fourth light conversion bands surrounding a fourth through hole, a plurality of fifth light conversion bands surrounding a fifth through hole, a plurality of sixth light conversion bands surrounding a sixth through hole, or a plurality of seventh light conversion bands surrounding a seventh through hole arranged at the corner of thereflective sheet 120. The fourth light conversion bands may be the same as the firstlight conversion bands 310, the fifth light conversion bands may be the same as the same as the secondlight conversion bands 320, the sixth light conversion bands may be the same as the thirdlight conversion bands 330, and the seventh light conversion bands may be the same as the firstlight conversion bands 310. - Accordingly, as the distance from the left and
right edges 120 b of thereflective sheet 120 to thelight conversion patch 200 is increased, the size (width) of thelight conversion patch 200 may be reduced. -
FIG. 18 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 18 , alight conversion patch 200 including a light conversion material may be arranged around a throughhole 120 a at the edge portion of thereflective sheet 120. - The
light conversion patch 200 may be formed in a substantially plurality of circumferential shapes surrounding the throughholes 120 a. InFIG. 18 , thelight conversion patch 200 having a substantially circumferential shape is illustrated, but is not limited thereto. For example, thelight conversion patch 200 may have various circumferential shapes surrounding through holes, such as an ellipse circumference, a square circumference, a pentagonal circumference, or a hexagonal circumference. - The
light conversion patch 200 may include first light conversion lines surrounding a first throughhole 121 disposed in a first column from the left andright edges 120 b of thereflective sheet 120. For example, the first light conversion lines may include threecircumferences hole 121. - The
light conversion patch 200 may include second light conversion lines surrounding a second throughhole 122 disposed in a second column in the left andright edges 120 b of thereflective sheet 120. The shape, size, and number of the second light conversion lines may be the same as the shape, size, and number of the first light conversion lines. For example, the second light conversion lines may include threecircumferences hole 122. - The
light conversion patch 200 may include third light conversion lines surrounding a third throughhole 123 disposed in a third column in the left andright edges 120 b of thereflective sheet 120. The shape, size, and number of the third light conversion lines may be the same as the shape, size, and number of the first light conversion lines. For example, the third light conversion lines may include threecircumferences hole 123. - Although not shown in
FIG. 18 , thelight conversion patch 200 may further include a plurality of fourth light conversion lines surrounding a fourth through hole, a plurality of fifth light conversion lines surrounding a fifth through hole, a plurality of sixth light conversion lines surrounding a sixth through hole or a plurality of seventh light conversion lines surrounding a seventh through hole. - Unlike that shown in
FIG. 18 , the second light conversion lines may be omitted, or the third light conversion lines may be omitted, or the second and third light conversion lines may be omitted. In other words, thelight conversion patch 200 may include only the first light conversion lines, or may include the first and second light conversion lines, or may include the first and third light conversion lines. - When the light is reflected by the light conversion lines arranged at the edge portion of the
reflective sheet 120, the ratio of blue light contained in the light may be reduced, and the ratio of yellow light may be further increased. Further, a defect (optical defect), in which the edge portion of thelight source apparatus 100 is more bluish than the central portion of thelight source apparatus 100 may be eliminated. -
FIG. 19 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 19 , alight conversion patch 200 including a light conversion material may be arranged around a throughhole 120 a at the edge portion of thereflective sheet 120. - The
light conversion patch 200 may include first light conversion lines surrounding a first throughhole 121 disposed in a first column from the left andright edges 120 b of thereflective sheet 120. For example, the first light conversion lines may include threecircumferences hole 121. - The
light conversion patch 200 may include second light conversion lines surrounding a second throughhole 122 disposed in a second column from the left andright edges 120 b of thereflective sheet 120. The number of the second light conversion lines may be less than the number of the first light conversion lines. For example, the second light conversion lines may include twocircumferences hole 122. - The
light conversion patch 200 may include third light conversion lines surrounding a third throughhole 123 disposed in a third column from the left andright edges 120 b of thereflective sheet 120. The number of the third light conversion lines may be less than the number of the second light conversion lines. For example, the third light conversion lines may include asingle circumference 331 surrounding the third throughhole 123. -
FIG. 20 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 20 , alight conversion patch 200 including a light conversion material may be arranged around throughholes 120 a at the edge portion of thereflective sheet 120. - The
light conversion patch 200 may include alight conversion region 410, in which a light conversion material is dispersed, surrounding the throughholes 120 a. For example, thelight conversion region 410, in which points including the light conversion material are distributed, may be arranged around the throughholes 120 a. - The
light conversion region 410 may be arranged around a first throughhole 121 disposed in a first column at the left andright edges 120 b of thereflective sheet 120, around a second throughhole 122 disposed in a second column from the left andright edges 120 b of thereflective sheet 120, and around a third throughhole 123 disposed in a third column from the left andright edges 120 b of thereflective sheet 120. - In the
light conversion region 410, a density of points including the light conversion material may be constant. -
FIG. 21 is a view of an example of the light conversion patch arranged on the left and right edge portions of the light source apparatus according to an exemplary embodiment of the present disclosure. - As illustrated in
FIG. 21 , alight conversion patch 200 including a light conversion material may be arranged around throughholes 120 a at the edge portion of thereflective sheet 120. - The
light conversion patch 200 may include alight conversion region 420, in which a light conversion material is dispersed, surrounding the throughholes 120 a. For example, thelight conversion region 420, in which points including the light conversion material are distributed, may be arranged around the throughholes 120 a. - The
light conversion region 410 may be arranged around a first throughhole 121, a second throughhole 122, and a third throughhole 123. - In the
light conversion region 410, a density of points including the light conversion material may vary according to a distance from the left andright edges 120 b of thereflective sheet 120. For example, as the distance from the left andright edges 120 b of thereflective sheet 120 is increased, the density of points including the light conversion material may be reduced. - In the above description, it has been described that the
light conversion patch 200 is applied, printed or coated on the edge portion of the “reflective sheet 120”. However, thelight conversion patch 200 may be applied, printed or coated on not only the “reflective sheet 120” but also other sheets or plates. -
FIG. 22 is a view of an example of the light conversion patch arranged on the edge portion of the light source apparatus according to an exemplary embodiment of the present disclosure. - For example, a
light conversion patch 200 may be applied, printed or coated on the edge portion of thesubstrate 112. Thelight conversion patch 200 may include a plurality of light conversion patches arranged at approximately equal intervals along a circumference of a circle surrounding thelight source 111 as shown inFIG. 22 . - The light conversion patches surrounding the
light source 111 may be exposed through the throughhole 120 a of thereflective sheet 120. Accordingly, light emitted from thelight source 111 may be reflected from thelight conversion patch 200 coated, printed or coated on thesubstrate 112. - The arrangement of the
light conversion patch 200 is not limited toFIG. 22 , and thelight conversion patch 200 may be arranged along the circumference of thelight source 111 on thesubstrate 112 as shown inFIGS. 10 to 21 . - In addition, the
light conversion patch 200 is not limited to being arranged on thereflective sheet 120 or thesubstrate 112, and thus thelight conversion patch 200 may be applied, printed, or coated on the edge portion of thediffuser plate 130, thediffusion sheet 142, theprism sheet 143, thelight conversion sheet 141 or the reflectivepolarizing sheet 144. - The display apparatus according to an exemplary embodiment may include the liquid crystal panel and the light source apparatus configured to irradiate light to the liquid crystal panel. The light source apparatus may include the plurality of light sources configured to emit blue light, and the reflective sheet in which a plurality of holes, through which each of the plurality of light sources is passed, is formed. The plurality of holes may include a first hole disposed at an edge portion of the reflective sheet, and a second hole in which a distance from the edge of the reflective sheet is greater than a distance between the edge of the reflective sheet and the first hole. The light source apparatus may further include the plurality of first light conversion patches arranged along a circumference of a circle surrounding the first hole on the reflective sheet, and the plurality of second light conversion patches arranged along a circumference of a circle surrounding the second hole on the reflective sheet. The size of each of the plurality of first light conversion patches may be greater than the size of each of the plurality of second light conversion patches, and each of the plurality of first and second light conversion patches may include at least one of a yellow fluorescent material, a yellow dye, or a yellow pigment.
- Accordingly, the ratio of blue light contained in the light may be reduced, and the ratio of yellow light may be further increased at the edge portion of the light source apparatus. Further, a difficulty, in which the edge portion of the light source apparatus is more bluish than the central portion of the light source apparatus, that is, the optical defect may be eliminated.
- The number of the plurality of first light conversion patches surrounding any one first hole among the plurality of first holes may be greater than the number of the plurality of second light conversion patches surrounding any one second hole among the plurality of second holes. An angular interval between the plurality of first light conversion patches surrounding any one first hole among the plurality of first holes may be less than an angular interval between the plurality of second light conversion patches surrounding any one second hole among the plurality of second holes.
- Accordingly, at the edge portion of the light source apparatus, the ratio of blue light may be reduced in steps and the ratio of yellow light may be increased in steps. Further, it is possible to maintain uniformity of color between the edge portion of the light source apparatus and the central portion of the light source apparatus.
- The number of the plurality of first light conversion patches surrounding any one first hole among the plurality of first holes may be equal to the number of the plurality of second light conversion patches surrounding any one second hole among the plurality of second holes. The angular interval between the plurality of first light conversion patches surrounding any one first hole among the plurality of first holes may be equal to an angular interval between the plurality of second light conversion patches surrounding any one second hole among the plurality of second holes.
- Accordingly, the defect (e.g., optical defect), in which the edge portion of the light source apparatus is more bluish than the central portion of the light source apparatus may be eliminated by using the simple structure described herein.
- The diameter of each of the plurality of light sources may be between approximately 2.0 millimeters (mm) and 3.0 mm.
- The diameter of each of the plurality of holes may be between approximately 3.5 mm and 5.5 mm.
- The distance between the plurality of holes may be between approximately 8.5 mm and 13.5 mm.
- Each of the plurality of first light conversion patches may be circular or polygonal, and the dimension (e.g. diameter or length) of each of the plurality of first light conversion patches may be between approximately 1.0 mm and 2.0 mm.
- The plurality of first light conversion patches may include eight light conversion patches surrounding any one first hole among the plurality of first holes.
- Each of the plurality of second light conversion patches may be circular or polygonal, and a dimension (e.g. diameter or length) of each of the plurality of second light conversion patches may be between approximately 0.8 mm and 1.5 mm.
- The plurality of second light conversion patches may include four light conversion patches surrounding any one second hole among the plurality of second holes.
- The plurality of holes may include the third hole in which the distance from the corner of the reflective sheet is a minimum. The light source apparatus may further include the plurality of third light conversion patches arranged along a circumference of a circle surrounding the third hole on the reflective sheet, and the size of each of the plurality of third light conversion patches may be greater than the size of each of the plurality of second light conversion patches.
- Accordingly, at the corner portion of the light source apparatus, the ratio of blue light may be reduced and the ratio of yellow light may be further increased. Further, the defect (e.g., optical defect), in which the corner portion of the light source apparatus is more bluish than the central portion of the light source apparatus may be eliminated.
- Each of the plurality of third light conversion patches may be circular or polygonal, and a dimension (e.g. diameter or length) of each of the plurality of third light conversion patches may be between approximately 1.5 mm and 2.5 mm.
- The plurality of third light conversion patches may include eight light conversion patches surrounding any one third hole among the plurality of third holes.
- The plurality of first light conversion patches may include a plurality of different first rings surrounding the first hole, and the plurality of second light conversion patches may include a plurality of different second rings surrounding the first hole. The number of the first rings may be greater than the number of the second rings.
- The plurality of first light conversion patches may include a first ring surrounding the first hole and the plurality of second light conversion patches may include a second ring surrounding the first hole. The width of the first ring may be greater than the width of the second ring.
- The light source apparatus may further include the light conversion sheet provided to convert a portion of the blue light included in incident light into yellow light and provided to transmit another portion of the blue light.
- Each of the plurality of first light conversion patches may convert a portion of the blue light included in incident light into yellow light and transmit another portion of the blue light.
- Each of the plurality of first light conversion patches may absorb a portion of the blue light included in incident light and reflect the yellow light included in the incident light.
- The display apparatus according to an exemplary embodiment may include the liquid crystal panel, and the light source apparatus configured to irradiate light to the liquid crystal panel. The light source apparatus may include the plurality of light sources configured to emit blue light and the reflective sheet in which the plurality of holes, through which each of the plurality of light sources is passed, is formed. The plurality of holes may include a first hole disposed at an edge portion of the reflective sheet, and a second hole farther away from the edge of the reflective sheet in comparison with the first hole. The light source apparatus may further include the first light conversion patches arranged around the first hole on the reflective sheet, and the second light conversion patches arranged around the second hole on the reflective sheet. An area density of the first light conversion patches may be greater than an area density of the second light conversion patches.
- The disclosed embodiments may be embodied in the form of a recording medium storing instructions executable by a computer. The instructions may be stored in the form of program code and, when executed by a processor, may generate a program module to perform the operations of the disclosed embodiments. The recording medium may be embodied as a computer-readable recording medium.
- The computer-readable recording medium includes all kinds of recording media in which instructions which can be decoded by a computer are stored. For example, there may be a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic tape, a magnetic disk, a flash memory, and an optical data storage device.
- A storage medium readable by machine may be provided in the form of a non-transitory storage medium. Here “non-transitory storage medium” means that the storage medium is a tangible device and does not contain a signal (for example, electromagnetic wave), and this term does not distinguish the case in which data is semi-permanently stored in the storage medium, from the case in which data is temporarily stored. For example, a non-temporary transitory storage medium may include a buffer in which data is temporarily stored.
- According to an exemplary embodiment, the method according to various embodiments disclosed herein may be provided by being included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. Computer program products may be distributed in the form of a storage medium (for example, compact disc read only memory (CD-ROM)), readable by a device. Alternatively, computer program products may be distributed (for example, downloaded or uploaded) online through an application store (for example, Play Store™) or directly distributed between two user devices (for example, smart phones). In the case of online distribution, at least a portion of the computer program product (for example, downloadable app) may be temporarily stored or created temporarily in a storage medium readable by a device, such as the manufacturer's server, the application store's server, or the relay server's memory.
- While the present disclosure has been particularly described with reference to exemplary embodiments, it should be understood by those of skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the present disclosure.
Claims (21)
1-15. (canceled)
16. A display apparatus comprising:
a liquid crystal panel; and
a light source apparatus configured to irradiate the liquid crystal panel with light,
wherein the light source apparatus comprises:
a plurality of light sources configured to emit blue light; and
a reflective sheet comprising a plurality of holes,
wherein the plurality of holes comprises:
a first hole disposed at an edge portion of the reflective sheet, and
a second hole wherein a distance from an edge of the reflective sheet to the second hole is greater than a distance between the edge of the reflective sheet and the first hole,
wherein the light source apparatus further comprises:
a plurality of first light conversion patches arranged along a circumference of a circle surrounding the first hole on the reflective sheet, and
a plurality of second light conversion patches arranged along a circumference of a circle surrounding the second hole on the reflective sheet,
wherein a size of each of the plurality of first light conversion patches is greater than a size of each of the plurality of second light conversion patches, and
wherein the plurality of first light conversion patches and the plurality of second light conversion patches comprise at least one of: a yellow fluorescent material, a yellow dye, or a yellow pigment.
17. The display apparatus of claim 16 , wherein
a number of the plurality of first light conversion patches surrounding the first hole is greater than a number of the plurality of second light conversion patches surrounding the second hole.
18. The display apparatus of claim 16 , wherein
an angular interval between the plurality of first light conversion patches surrounding the first hole is less than an angular interval between the plurality of second light conversion patches surrounding the second hole.
19. The display apparatus of claim 16 , wherein
a number of the plurality of first light conversion patches surrounding the first hole is equal to the number of the plurality of second light conversion patches surrounding the second hole.
20. The display apparatus of claim 16 , wherein
an angular interval between the plurality of first light conversion patches surrounding the first hole is equal to an angular interval between the plurality of second light conversion patches surrounding the second hole.
21. The display apparatus of claim 16 , wherein
a diameter of each of the plurality of light sources is between 2.0 millimeters (mm) and 3.0 mm,
a diameter of each of the plurality of holes is between 3.5 mm and 5.5 mm, and
a distance between the plurality of holes is between 8.5 mm and 13.5 mm.
22. The display apparatus of claim 16 , wherein
each of the plurality of first light conversion patches is circular or polygonal, and a dimension of each of the plurality of first light conversion patches is between 1.0 mm and 2.0 mm, and
each of the plurality of second light conversion patches is circular or polygonal, and a dimension of each of the plurality of second light conversion patches is between 0.8 mm and 1.5 mm.
23. The display apparatus of claim 16 , wherein
each of the plurality of first light conversion patches is circular or polygonal, and a dimension of each of the plurality of first light conversion patches and second light conversion patches is between 1.0 mm and 2.0 mm.
24. The display apparatus of claim 16 , wherein
the plurality of first light conversion patches comprises eight light conversion patches surrounding the first hole, and
the plurality of second light conversion patches comprises four light conversion patches surrounding the second hole.
25. The display apparatus of claim 16 , wherein
the plurality of first light conversion patches and second light conversion patches comprise eight light conversion patches surrounding the first hole and the second hole.
26. The display apparatus of claim 16 , wherein
the plurality of holes further comprises a third hole in which a distance from a corner of the reflective sheet to the third hole is a less than a distance between the corner and the first hole and a distance between the corner and the second hole,
wherein the light source apparatus further comprises a plurality of third light conversion patches arranged along a circumference of a circle surrounding the third hole on the reflective sheet,
wherein a size of each of the plurality of third light conversion patches is greater than the size of each of the plurality of first light conversion patches.
27. The display apparatus of claim 26 , wherein
each of the plurality of third light conversion patches is circular or polygonal, and a dimension of each of the plurality of third light conversion patches is between 1.5 mm and 2.5 mm.
28. The display apparatus of claim 27 , wherein
the plurality of third light conversion patches comprises eight light conversion patches surrounding the third hole.
29. The display apparatus of claim 16 , wherein
the light source apparatus further comprises a light conversion sheet configured to convert a portion of the blue light included in incident light into yellow light and provided to transmit another portion of the blue light.
30. The display apparatus of claim 16 , wherein
each of the plurality of first light conversion patches and second light conversion patches converts a portion of the blue light included in incident light into yellow light and transmits another portion of the blue light.
31. A display apparatus comprising:
a liquid crystal panel; and
a light source apparatus configured to irradiate the liquid crystal panel with light,
wherein the light source apparatus comprises:
a plurality of light sources configured to emit blue light; and
a reflective sheet comprising a plurality of holes,
wherein the plurality of holes comprises:
a first hole disposed at an edge portion of the reflective sheet, and
a second hole disposed farther away from an edge of the reflective sheet than the first hole,
wherein the light source apparatus further comprises a plurality of first light conversion patches arranged around the first hole on the reflective sheet, and a plurality of second light conversion patches arranged around the second hole on the reflective sheet, and
wherein an area density of the plurality of first light conversion patches is greater than an area density of the plurality of second light conversion patches.
32. The display apparatus of claim 31 , wherein
the plurality of second light conversion patches are arranged along a circumference of a circle surrounding the second hole on the reflective sheet.
33. The display apparatus of claim 32 , wherein
a size of the plurality of first light conversion patches is greater than a size of the plurality of second light conversion patches.
34. The display apparatus of claim 32 , wherein
a number of the plurality of first light conversion patches surrounding the first hole is greater than a number of the plurality of second light conversion patches surrounding the second hole.
35. The display apparatus of claim 32 , wherein
an angular interval between the plurality of first light conversion patches surrounding the first hole is less than an angular interval between the plurality of second light conversion patches surrounding the second hole.
Priority Applications (7)
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US17/463,932 US11333928B1 (en) | 2021-01-05 | 2021-09-01 | Display apparatus comprising a reflective sheet having a plurality of first and second light conversion dots respectively disposed around a plurality of first and second holes |
US17/473,128 US11415834B2 (en) | 2021-01-05 | 2021-09-13 | Display apparatus |
US17/473,089 US11333929B1 (en) | 2021-01-05 | 2021-09-13 | Display device comprising a reflective sheet having a plurality of light conversion dots disposed around a plurality of first holes |
US17/473,044 US11347106B1 (en) | 2021-01-05 | 2021-09-13 | Display device comprising a reflective sheet having a plurality of first and second light conversion dots respectively disposed around a plurality of first and second holes |
US17/841,165 US11592711B2 (en) | 2021-01-05 | 2022-06-15 | Display device and light apparatus comprising a reflective sheet having a plurality of first and second light conversion dots respectively disposed around first and second holes |
US18/068,965 US11747678B2 (en) | 2021-01-05 | 2022-12-20 | Display apparatus comprising a reflective sheet having a plurality of first, second, and third light conversion dots respectively disposed around first, second, and third holes of the reflective sheet |
US18/352,776 US20230359086A1 (en) | 2021-01-05 | 2023-07-14 | Display apparatus comprising a reflective sheet having a plurality of first, second, and third light conversion dots respectively disposed around first, second, and third holes of the reflective sheet |
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KR10-2021-0000892 | 2021-01-05 | ||
KR20210000892 | 2021-01-05 | ||
KR1020210015416A KR102440488B1 (en) | 2021-01-05 | 2021-02-03 | Display apparatus |
KR10-2021-0015416 | 2021-02-03 | ||
PCT/KR2021/002835 WO2022149653A1 (en) | 2021-01-05 | 2021-03-08 | Display device |
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PCT/KR2021/002835 A-371-Of-International WO2022149653A1 (en) | 2021-01-05 | 2021-03-08 | Display device |
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US17/463,932 Continuation US11333928B1 (en) | 2021-01-05 | 2021-09-01 | Display apparatus comprising a reflective sheet having a plurality of first and second light conversion dots respectively disposed around a plurality of first and second holes |
US17/473,044 Continuation US11347106B1 (en) | 2021-01-05 | 2021-09-13 | Display device comprising a reflective sheet having a plurality of first and second light conversion dots respectively disposed around a plurality of first and second holes |
US17/473,089 Continuation US11333929B1 (en) | 2021-01-05 | 2021-09-13 | Display device comprising a reflective sheet having a plurality of light conversion dots disposed around a plurality of first holes |
US17/473,128 Continuation US11415834B2 (en) | 2021-01-05 | 2021-09-13 | Display apparatus |
US17/841,165 Continuation US11592711B2 (en) | 2021-01-05 | 2022-06-15 | Display device and light apparatus comprising a reflective sheet having a plurality of first and second light conversion dots respectively disposed around first and second holes |
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