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LIGHT EMITTING DIODE, BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME BACKGROUND OF THE INVENTION 5 1. Field of the Invention The invention relates to a light emitting diode, and a backlight unit and a liquid crystal displaying unit having the same. In particular, the present invention relates to a light emitting diode with improved coloring mixing, and a 10 backlight unit and a liquid crystal displaying unit having the same. 2. Description of the Related Art Light bulbs, light emitting diodes (LED), fluorescent lights and metal halide lamps are generally used as light 15 sources of backlight units of liquid crystal displaying units. Recently, backlight units that use light emitting diodes, which can achieve low electricity consumption, light weight and compactness better than the back light units that use conventional cold cathode fluorescent light (CCFL), are being 20 developed. A backlight unit using the light emitting diodes uses as a light source unit a light emitting diode array in which a plurality of light emitting diodes is arranged on a printed circuit board in a row or in a matrix pattern. It is possible to use both a multi-chip light emitting 25 diode which has a plurality of light emitting chips in a single 1 package and a single-chip light emitting diode which has one light emitting chip in a single package. A multi-chip light emitting diode packs a light emitting chip with two or more colors in a single package, and a molding 5 part is formed on top of it. The multi-chip light emitting diode, compared to the single-chip light emitting diode, is advantageous in color mixing. More particularly, the multi-chip light emitting diode is relatively better than the single-chip light emitting diode in color mixing, but, when 10 compared to other types of light source used as backlights, the color mixing property of the multi-chip light emitting diode lacks behind. SUMMARY OF THE INVENTION 15 Accordingly, the present invention has been finalized in order to solve the above-described problems, and it is an object of the invention to provide a light emitting diode with improved color mixing and a backlight unit and a liquid crystal display having the same. 20 An aspect of the invention provides a light emitting diode which includes: a substrate in which a reflective part is formed in a recessed shape; and at least one light emitting chip that is mounted on the reflective part of the substrate. The reflective part is composed of a base surface, a side wall that 25 is formed to incline at a first angle with respect to the base 2 surface, and the light emitting chip is mounted on the side wall. A plurality of the light emitting chips is mounted on the side wall at predetermined intervals. The plurality of light emitting chips is mounted on the 5 side wall at equal intervals. The first angle is in the range of 120 to 150 degrees. The light emitting diode further includes a protrusion formed on the base surface. The protrusion is formed to have height equal to or smaller 10 than depth of the reflective part. The protrusion includes a reflective surface that is formed to incline at a second angle with respect to the base surface. The second angle is in the range of 5 to 85 degrees. 15 The protrusion is formed in a conical shape or a polypyramid shape. The light emitting chip includes at least one of a red light emitting chip, a green light emitting chip and a blue light emitting chip. 20 The light emitting chip includes a white light emitting chip. The light emitting diode further includes a lead terminal and a wire to apply power to the light emitting chip. The light emitting diode further includes a molding part 25 to cap the light emitting chip. 3 The base surface is formed in a circular shape, a polygon shape, and a polygon shape including curves. Another aspect of the invention provides backlight unit which includes: a light emitting diode including a substrate 5 in which a reflective part is formed in a recessed shape and a plurality of light emitting chips mounted on the reflective part of the substrate, in which the reflective part is composed of a base surface and a side wall that is formed to incline at a first angle with respect to the base surface, and the plurality 10 of light emitting chips are mounted on the side wall; and a light source unit including a printed circuit board on which the light emitting diode is mounted. The backlight unit further includes a protrusion that is formed to incline at a second angle with respect to the base 15 surface. Another aspect of the invention provides a backlight unit which includes: a light emitting diode including a substrate in which a reflective part is formed in a recessed shape and a single light emitting chip mounted on the reflective part of 20 the substrate, in which the reflective part is composed of a base surface and a side wall that is formed to incline at a first angle with respect to the base surface, and the single light emitting chip is mounted on the side wall; and a light source unit including a printed circuit board on which a plurality of 25 the light emitting diodes are mounted, in which the plurality 4 of light emitting diodes are divided into light emitting diode units each composed of two or more light emitting diodes so as to be mounted on the printed circuit board. The backlight unit further includes a protrusion having 5 a reflective surface that is formed to incline at a second angle with respect to the base surface. Another aspect of the invention provides a liquid crystal display which includes: a backlight unit which has the above-described aspects; and a liquid crystal display panel 10 disposed on the backlight unit to display image. BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail 15 preferred embodiments thereof with reference to the attached drawings in which: FIG. 1 is a perspective view of a light emitting diode according to an embodiment of the present invention; FIGS. 2a and 2b are a layout view of the light emitting 20 diode of FIG.1 and a cross-sectional view of the light emitting diode; FIGS. 3a and 3b are views of modifications of the light emitting diode of FIG. 1; FIGS. 25 4a and 4b are a perspective view and a cross-sectional view of a light emitting diode according to a 5 conventional art; FIGS. 5a and 5b are a result diagram of light distribution and a chroma data of the light emitting diode according to the conventional art and the embodiment of the present invention; 5 FIG. 6 is a table comparing the level of color mixing of the light emitting diode between the conventional art and the embodiment of the present invention; FIGS. 7 and 8 are a perspective view and a cross-sectional view of the light emitting diode according to a second 10 embodiment of the present invention; FIG. 9 is a draft schematically illustrating the light emitting diode shown in FIGS. 7 and 8; FIGS. 10a to 10e are modifications of the light emitting diode shown in FIGS. 7 and 8; 15 FIG. 11 is a table comparing the level of color mixing of the light emitting diode between the conventional art and the modifications of FIGS. 10a to 10e; FIGS. 12a to 12e are other modifications of the light emitting diode shown in FIGS. 7 and 8; 20 FIG. 13 a table comparing the level of color mixing of the light emitting diode between the conventional art and the modifications of FIGS. 12a to 12e; FIGS. 14a and 14b are a plan view and a perspective view of the light emitting diode according to a third embodiment of 25 the present invention; and 6 FIGS. 15 and 16 are an exploded perspective views illustrating one or other example of a liquid crystal display including a backlight composed of the light emitting diodes according to the present invention. 5 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many 10 different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided such that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. 15 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view of a light emitting diode according to an embodiment of the present invention. 20 FIGS. 2a and 2b are a layout view of the light emitting diode of FIG.1 and a cross-sectional view of the light emitting diode. With reference to FIGS. 1 to 2b, a light emitting diode 410 according to the embodiment of the present invention includes a substrate 411, a light emitting chip 412, a lead 25 terminal 413, a wire 414, a reflective part 415 and a molding 7 part 419. The reflective part 415 is formed in a recessed shape on a first surface of the substrate 411, that is, an upper side of the substrate. 5 The reflective part 415 is parallel to the first surface of the substrate 411, and composed of a base surface 416 that is formed to have a predetermined recessed depth, and a side wall 417 that is formed to incline at a first angle θ1 with respect to the base surface 416. In this case, the base surface 416 is formed in a circular shape. 10 The light emitting chip 412 is mounted on the side wall 417 of the reflective part 415 so as to be inclined at the first angle θ1 with respect to the base surface 416. At this time, the light emitting chip 412 includes first to fourth light emitting chips 412a to 412d, the light emitting chips 412a to 15 412d are mounted at predetermined intervals on the side wall. According to the embodiment, the light emitting chips 412a to 412d are mounted at uniform intervals, but not limited thereto. In addition, the first light emitting chip 412a is a blue light emitting chip which emits blue light, the second light emitting 20 chip 412b is a green light emitting chip which emits green light, the third light emitting chip 412c is a red light emitting chip which emits red light, and the fourth light emitting chip 412d is a green light emitting chip which emits green light. Otherwise, the first to fourth light emitting chips 412a to 412d 25 may be white light emitting chips emitting white light. 8 In other words, the light emitting chip 412 can emit light with various wavelengths. To enable this, for example, the amount of indium (In) that is used as an active layer in a nitride based light emitting diode is controlled, or light emitting diodes 5 emitting light with different wavelengths are mixed, or a light emitting chip emitting light at a predetermined wavelength band, like ultraviolet rays, is combined with fluorescent substance. The number and type of the light emitting chips used in the present embodiment and the mounting intervals between the light 10 emitting chips are illustrative and can be modified in many different forms. The first angle θ1 at which the light emitting chip 412 is inclined with respect to the base surface 416 can be controlled with and the range of 120 to 150 degrees. 15 In the present embodiment, the first angle θ1 is 135 degrees. The lead terminal 413 that is composed of a first lead terminal 413a and a second lead terminal 413b is disposed to the substrate 411. One end of the lead terminal 413 is disposed on the base surface 416 to be exposed; the other end is bent 20 along the side wall of the substrate so as to be disposed on a second surface of the substrate 411, that is, the lower side. Unlike this, the other end of the lead terminal 413 can extend to the outside of the substrate 411. The wire 414 is connected to the light emitting chip 412, 25 the first lead terminal 413a and the second lead terminal 413b. 9 When an exterior power source supplies power to the first lead terminal 413a and the second lead terminal 413b, the power is supplied through the wire 414 to a P electrode (not shown) and an N electrode (not shown) of the light emitting chip 412, and 5 the light emitting chip 412 emits light of a predetermined wavelength. The molding part 419 is formed on the substrate 411 to cap the light emitting chip 412 and the wire 414. In this case, the molding part 419 may be formed in an optical lens shape, 10 a flat shape, etc. In the present embodiment, the molding part is formed in a semicircular shape or a dome shape. The molding part 419 is made of transparent resin, such as liquid epoxy resin or silicon resin. The molding part 419 may have fluorescent substance (not shown) mixed therein to absorb light emitted from 15 the light emitting chip 412 and convert the light into wavelength. FIGS. 3a and 3b are views of modifications of the light emitting diode of FIG. 1. In FIGS. 3a and 3b, the lead terminal and the wire are not illustrated, and the same components as 20 those of FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted and different constitution from that of FIG. 1 will be mainly described. Referring to FIG. 3a, a light emitting diode 420 includes a substrate 421, light emitting chips 422, a lead terminals (not 25 shown), wires (not shown), a reflective part 425 and a molding 10 part 429. The reflective part 425 is formed in a recessed shape on the upper side of the substrate 421. The reflective part 425 is parallel to the upper side of the substrate 421, and composed 5 of a base surface 426 that is formed to have a predetermined recessed depth, and a side wall 427 that is formed to incline at a predetermined angle with respect to the base surface 426. In this case, the base surface 426 is formed in a polygon shape, for example, an octagon. 10 The side wall 427 that extends from the base surface 426 are composed eight side walls, and each of the side walls is formed of a flat surface, not a curved surface, which makes it easier to mount the light emitting chip 422 on the side wall. In the meantime, referring to FIG. 3b, a light emitting 15 diode 430 includes substrate 431, light emitting chips 432, lead terminals (not shown), wires (not shown), a reflective part 435 and a molding part 439. A base surface 436 of the reflective part 435 may be formed in a polygon shape which includes curves. 20 As the base surface 436 is formed in a polygon shape which includes curves, a side wall 437 is also composed of flat and curved side walls, and the light emitting chips 432 are mounted on the flat side walls. FIGS. 4a and 4b are a perspective view and a cross-sectional view of a light emitting diode according to a 25 conventional art. FIGS. 5a and 5b are a result diagram of light 11 distribution and a chroma data of the light emitting diode according to the conventional art and the embodiment of the present invention. color 5 mixing of FIG. 6 is a table comparing the level of the light emitting diode between the conventional art and the embodiment of the present invention. A light emitting diode 40 according to the conventional art illustrated in FIGS. 4a and 4b includes a substrate 41, a light emitting chip 42, lead terminals (not shown), wires (not shown), a reflective part 45 that is formed in a recessed shape 10 and a molding part 419. The light emitting chips 42 are mounted on the bottom surface of the reflective part 45. FIGS. 5a to 6 illustrate simulation results according to the conventional art and the present invention. Looking at specs of the light emitting diodes according to the conventional 15 art and present invention to be simulated, the total size is 3 x 3 x 0.7 mm, the light emitting chip uses an R,G,B light emitting chip of 350 m x 350 m, the molding part is formed to have height of 0.3 mm. Simulations are carried out under circumstances in which the light emitting diode according to 20 the conventional art has the light emitting chips mounted on the bottom surface of the reflective part, and the light emitting diode according to the present invention has the light emitting chips mounted to be inclined at 135 degrees with respect to the bottom surface of the reflective part. 25 The location of white points and the level of Δu'v' can 12 be obtained from chroma data. Here, each of the data indicates how many points (percentage %) are found below 0.006, in the value of color difference that is obtained with respect to a center Pt of a detector or a white Pt (that is, u'v' = 0.198, 5 0.468). In the conventional art, as for Δu'v' that is the value of color difference, the number of points below 0.006 is 0.19 out of 100. The reason why the number is so small is that a perfect white point value is set as reference and light emitted 10 from one light emitting diode is detected by a detector with the size of 100 x 100 mm. If simulation is carried out under different circumstances, for example, if light emitted from the light emitting diode is measured by a detector that is located directly on the light emitting diode, or if the detector is 15 increased in size, the measured value can be large. As shown in FIG. 6, looking at the case in which the value of color difference is below 0.006 in respect to the white point, the white Pt is 0.35 in the present invention (when the first angle is 135 degrees), which is improved 84% as compared to the 20 conventional art in which the white Pt is 0.19. Therefore, color mixing, that is, white color mixing is improved when the light emitting chip is mounted on the side wall of the reflective part, as compared to when the light emitting chip is mounted on the bottom surface of the reflective part. 25 FIGS. 7 and 8 are a perspective view and a cross-sectional 13 view of the light emitting diode according to a second embodiment of the present invention. FIG. 9 is a draft schematically illustrating the light emitting diode shown in FIG. 7 and FIG. 8. 5 With reference to FIGS. 7 to 9, a light emitting diode 440 according to the second embodiment of the present invention includes a substrate 441, light emitting chips 442, lead terminals (not shown), wires (not shown), a reflective part 445, a protrusion 448 and a molding part 449. 10 The reflective part 445 is formed in a recessed shape on a first surface of the substrate 441, that is, an upper side of the substrate. The reflective part 445 is parallel to the first surface of the substrate 441, and composed of a base surface 446 that is formed to have a predetermined recessed 15 depth, and a side wall 447 that is formed to incline at a first angle θ1 with respect to the base surface 446. In this case, the base surface 446 is formed in a circular shape, but as described above, the base surface may be formed in various shapes, such as a polygon or a polygon including curves. 20 The light emitting chip 442 is mounted on the side wall 447 of the reflective part 445 so as to be inclined at the first angle θ1 with respect to the base surface 446. At this time, the light emitting chip 442 includes first to fourth light emitting chips 442a to 442d, the light emitting chips 442a to 25 442d are mounted at predetermined intervals on the side wall. 14 In the present embodiment, the light emitting chips 442a to 442d are mounted at uniform intervals, but not limited thereto. The protrusion 448 is formed in the reflective part 445, the protrusion 448 is formed on the base surface 446 of the 5 reflective part 445, and the protrusion 448 includes a reflective surface that is inclined at a second angle θ2 with respect to the base surface 446. The protrusion 448 is formed in a conical shape as a whole, but can be modified in a different form, such as polypyramid. 10 In addition, the protrusion 448 is formed to have height equal to or smaller than the depth of the reflective part 445. Further, the second angle θ2 formed between the reflective surface of the protrusion 448 and the base surface 446 can be changed within the range of 5 to 85 degrees. 15 Likewise, if the protrusion 448 is formed on the base surface 446 of the reflective part 445, it is possible to further improve color mixing effect. FIG. 9 illustrates an example draft of the light emitting diode 440. 20 The reflective part 445 of the light emitting diode 440 has depth of 0.3 mm, distance from the center of the base surface 446 to one end of the side wall 447 is 0.88 mm, and distance from the center of the base surface 446 to other end of the side wall 447 is 1.18 mm, and the light emitting chip 442 is mounted on the side wall 447 at a distance of 0.027 mm 25 from the base surface 446. The light emitting diode 440 shown 15 in FIG. 9 is illustrative not limitative, the type and dimension of the light emitting diode are not limited thereto. FIGS. 10a to 10e are modifications of the light emitting diode shown in FIGS. 7 and 8. 5 FIG. 11 is a table comparing the level of color mixing of the light emitting diode between the conventional art and the modifications of FIGS. 10a to 10e. FIGS. 10a to 10e illustrate schematic cross-sectional views of the light emitting diode when the second angle θ2, that is, the angle formed between the reflective surface of the 10 protrusion and the base surface, is modified to 30, 45, 60, 75, and 85 degrees. At this time, the protrusion of the light emitting diode is formed to have height of 0.2 mm, and the reflective part to have depth of 0.3 mm. FIG. 11 is a table comparing the level of color mixing of 15 the light emitting diode between the conventional art, the first embodiment (the light emitting diode without the protrusion shown in FIG. 1) of the present invention and the modifications (the light emitting diode shown in FIGS. 10a to 10e) of the present invention. 20 Looking at the value of color difference below 0.006 in respect to the white point, the white Pt is 0.19 in the conventional art, the white Pt is 0.35 in the light emitting diode shown in FIG. 1, the light emitting diodes according to FIGS. 10a to 10e have white Pts of 0.46 (θ2 = 30), 0.54 (θ2 = 25 45), 0.27 (θ2 = 60), 0.23 (θ2 = 70) and 0.19 (θ2 = 85), 16 respectively. On the table, the optimal result is 0.54 obtained when the second angle θ2 is 45 degrees, which is improved 184% in color mixing as compared to the conventional art (0.19). 5 FIGS. 12a to 12e are other modifications of the light emitting diode shown in FIGS. 7 and 8. FIG. 13 a table comparing the level of color mixing of the light emitting diode between the conventional art and the modifications of FIGS. 12a to 12e. FIGS. 12a to 12e illustrate schematic cross-sectional 10 views of the light emitting diode, when the second angle θ2, that is, the angle formed between the reflective surface of the protrusion and the base surface, is modified to 30, 45, 60, 75, and 85 degrees. At this time, the protrusion of the light emitting diode is formed to have height of 0.3 mm, and the 15 reflective part to have depth of 0.3 mm. FIG. 13 a table comparing the level of color mixing of the light emitting diode between the conventional art, the first embodiment (the light emitting diode without the protrusion shown in FIG. 1) of the present invention and the modifications 20 (the light emitting diodes shown in FIGS. 12a to 12e). Looking at the value of color difference below 0.006 in respect to the white point, the white Pt is 0.19 in the conventional art, the white Pt is 0.35 in the light emitting diode shown in FIG. 1, and the light emitting diodes according 25 to FIGS. 12a to 12e have white Pts of 0.62 (θ2 = 30), 0.19 (θ2 17 = 45), 0.19 (θ2 = 60), 0.27 (θ2 = 70) and 0.27 (θ2 = 85), respectively. On the table, the optimal result is 0.62 obtained when the second angle θ2 is 30 degrees, which is improved 226% in color 5 mixing as compared to the conventional art (0.19). FIGS. 14a and 14b are a plan view and a perspective view of the light emitting diode according to a third embodiment of the present invention. With reference to FIGS. 14a and 14b, a light emitting diode 10 unit 450 includes a plurality of light emitting diodes, in the present embodiment, four light emitting diodes, that is, first to fourth light emitting diodes (450a to 450d). Since each light emitting diode has a uniform constitution, only a first light emitting diode 450a will be described hereafter. 15 The first light emitting diode 450a includes a substrate 451a, a first light emitting chip 452a, lead terminals (not shown), wires (not shown), a reflective part 455a and a molding part 459. The reflective part 455a is parallel to the upper side of the substrate 451a, and composed of a base surface 456a that 20 is formed to have a predetermined recessed depth, and a side wall 457a that is formed to incline at a predetermined angle with respect to the base surface 456a. A single light emitting chip 452a is mounted on the side wall 457a at a predetermined angle with respect to the base 25 surface 456a. In the meantime, the first to fourth light 18 emitting chips in the light emitting diode unit 450 can be disposed at equal intervals. FIGS. 15 and 16 are an exploded perspective views illustrating one or other example of a liquid crystal display 5 including a backlight composed of the light emitting diodes according to the present invention. With reference to FIGS. 15 and 16, a liquid crystal display includes an upper accommodation member 300, a liquid crystal display panel 100, driving circuit parts 220 and 240, a 10 diffusion plate 600, a plurality of optical sheets 700, a light source unit 400, a mold frame 800 and a lower accommodation member 900. A predetermined accommodating space is formed in the mold frame 800, a backlight unit composed of the diffusion plate 600, 15 the plurality of optical sheets 700 and the light source unit 400 is disposed in the accommodating space of the mold frame. The liquid crystal display panel 100 that displays image is disposed at the upper side of the backlight unit. The driving circuit parts 220 and 240 are connected to the 20 liquid crystal display panel 100, and include a gate side printed circuit board 224 on which a control IC is mounted and which applies a predetermined gate signal to a gate line of a TFT substrate 120, a data side printed circuit board 244 on which a control IC (integrated circuit) is mounted and which applies 25 a predetermined data signal to a data line of the TFT substrate 19 120, a gate side flexible printed circuit board 222 connecting the TFT substrate 120 and the gate side printed circuit board 224, and a data side flexible printed circuit board 242 connecting the TFT substrate 120 and the data side printed 5 circuit board 244. The gate side and data side printed circuit boards 224 and 244 are connected to the gate side and data side flexible printed circuit boards 222 and 242 to apply a gate driving signal and an exterior image signal. At this time, the gate side and data side printed circuit boards 224 and 244 can 10 be integrated into one printed circuit board. In addition, the flexible printed circuit boards 222 and 242 have a driving IC (not shown) mounted therein, to transmit RGB (Red, Green, and Blue) signals generated from the printed circuit boards 224 and 244 to the liquid crystal display panel 100. 15 The light source unit 400 includes the above-described light emitting diodes 410 to 440 and a printed circuit board 470 having the light emitting diodes 410 to 440 mounted thereon (refer to FIG. 15). In the meantime, the light source unit 400 shown in FIG. 20 16 includes the light emitting diode unit 450 shown in FIGS. 14a and 14band the printed circuit board 470 having the light emitting diode unit 450 mounted thereon. The diffusion plate 600 and the plurality of optical sheets 700 are disposed at the upper side of the light source unit 400 25 to make uniform luminance distribution of light output from the 20 light source unit 400. The upper accommodation member 300 is joined with the mold frame 800 so as to cover edges of the liquid crystal display panel 100, that is, a non-display region and a side surface and a bottom surface of the mold frame 800. 5 The lower accommodation member 900 is disposed at the lower side of the mold frame 800 to close the accommodating space of the mold frame. The above description is about exemplary embodiments of the light emitting diode according to the present invention, 10 a backlight unit and a liquid crystal display having the same. The invention is not limited thereto, but is defined by the appended claims. Therefore, it should be noted that various changes and modifications can be made by those skilled in the art without departing from the technical spirit of the appended 15 claims. As described above, according to the present invention, as the light emitting chip is mounted on the side wall of the reflective part formed on the substrate, it is possible to improve color mixing of light emitted by the light emitting 20 diode. 21 WHAT IS CLAIMED IS: 1. A light emitting diode comprising: a substrate in which a reflective part is formed in a 5 recessed shape; and at least one light emitting chip that is mounted on the reflective part of the substrate, wherein the reflective part is composed of a base surface and a side wall that is formed to incline at a first angle with 10 respect to the base surface, and the light emitting chip is mounted on the side wall. 2. The light emitting diode of claim 1, wherein a plurality of the light emitting chips are mounted on the side 15 wall at predetermined intervals. 3. The light emitting diode of claim 2, wherein the plurality of light emitting chips are mounted on the side wall at equal intervals. 20 4. The light emitting diode of claim 1, wherein the first angle is in the range of 120 to 150 degrees. 5. 25 The light emitting diode of claim 1, further comprising: 22 a protrusion formed on the base surface. 6. The light emitting diode of claim 5, wherein the protrusion is formed to have height equal to or smaller than 5 depth of the reflective part. 7. The light emitting diode of claim 5, wherein the protrusion includes a reflective surface that is formed to incline at a second angle with respect to the base surface. 10 8. The light emitting diode of claim 7, wherein the second angle is in the range of 5 to 85 degrees. 9. 15 The light emitting diode of claim 7, wherein the protrusion is formed in a conical shape or a polypyramid shape. 10. The light emitting diode of claim 1, wherein the light emitting chip includes at least one of a red light emitting chip, a green light emitting chip and a blue light emitting chip. 20 11. The light emitting diode of claim 1, wherein the light emitting chip includes a white light emitting chip. 12. 25 The light emitting diode of claim 1, further comprising: 23 a lead terminal and a wire to apply power to the light emitting chip. 13. 5 The light emitting diode of claim 1, further comprising: a molding part to cap the light emitting chip. 14. The light emitting diode of claim 1, wherein the base surface is formed in a circular shape, a polygon shape, 10 and a polygon shape including curves. 15. A backlight unit comprising: a light emitting diode including a substrate in which a reflective part is formed in a recessed shape and a plurality 15 of light emitting chips mounted on the reflective part of the substrate, in which the reflective part is composed of a base surface and a side wall that is formed to incline at a first angle with respect to the base surface, and the plurality of light emitting chips are mounted on the side wall; and 20 a light source unit including a printed circuit board on which the light emitting diode is mounted. 16. The backlight unit of claim 15, further comprising: a protrusion that is formed to incline at a second angle 25 with respect to the base surface. 24 17. A backlight unit comprising: a light emitting diode including a substrate in which a reflective part is formed in a recessed shape and a single light 5 emitting chip mounted on the reflective part of the substrate, in which the reflective part is composed of a base surface and a side wall that is formed to incline at a first angle with respect to the base surface, and the single light emitting chip is mounted on the side wall; and 10 a light source unit including a printed circuit board on which a plurality of the light emitting diodes are mounted, in which the plurality of light emitting diodes are divided into light emitting diode units each composed of two or more light emitting diodes so as to be mounted on the printed circuit board. 15 18. The backlight unit of claim 17, further comprising: a protrusion having a reflective surface that is formed to incline at a second angle with respect to the base surface. 20 19. A liquid crystal display comprising: a backlight unit which has a light emitting diode including a substrate in which a reflective part is formed in a recessed shape and a plurality of light emitting chips mounted on the reflective part of the substrate, in which the reflective part 25 is composed of a base surface and a side wall that is formed 25 to incline at a first angle with respect to the base surface, and the plurality of light emitting chips are mounted on the side wall, and a light source unit including a printed circuit board on which the plurality of light emitting diodes are 5 mounted; and a liquid crystal display panel disposed on the backlight unit to display image. 20. 10 The liquid crystal display of claim 19, further comprising: a protrusion including a reflective surface that is formed to incline at a second angle with respect to the base surface. 21. 15 A liquid crystal display comprising: a backlight unit which has a light emitting diode including a substrate in which a reflective part is formed in a recessed shape and a single light emitting chip mounted on the reflective part of the substrate, in which the reflective part is composed of a base surface and a side wall that is formed to incline at 20 a first angle with respect to the base surface, and the single light emitting chip is mounted on the side wall, and a light source unit including a printed circuit board on which the plurality of light emitting diodes are mounted, in which the plurality of light emitting diodes are divided into light 25 emitting diode units each composed of two or more light emitting 26 diodes so as to be mounted on the printed circuit board; and a liquid crystal display panel disposed on the backlight unit to display image. 5 22. The liquid crystal display of claim 21, further comprising: a protrusion including a reflective surface that is formed to incline at a second angle with respect to the base surface. 27 ABSTRACT OF THE DISCLOSURE The present invention relates to a light emitting diode with improved coloring mixing, and a backlight unit and a liquid 5 crystal displaying unit having the same. The present invention provides: a light emitting diode including a substrate in which a reflective part is formed in a recessed shape, and at least one light emitting chip that is mounted on the reflective part of the substrate, in which the reflective part is composed of 10 a base surface and a side wall that is formed to incline at a first angle with respect to the base surface, and the light emitting chip is mounted on the side wall; a backlight unit; and a liquid crystal display having the light emitting diode. 28 [FIG. 6] CONVENTIONAL ART 45 DEGREES 5 [FIG. 11] CONVENTIONAL ART 45 DEGREES (FLAT REFLECTIVE PLATE) 10 [FIG. 13] CONVENTIONAL ART 45 DEGREES (FLAT FREFLECTIVE PLATE) 29