Light-emitting member and display device including the same

Abstract

This invention relates to a light-emitting member and a display device that can improve vertical light emission characteristics. [Solution] The light-emitting member 100 includes one side surface 120, one surface 110 on which a number of light-emitting patterns 150 are formed, and another surface 130 on which light reflected and / or refracted from the number of light-emitting patterns 150 is emitted. The light-emitting patterns 150 are engraved patterns corresponding to a part of a cone having a base and a predetermined depth. The base of the light-emitting pattern 150 is sector-shaped, the central angle of the base of the light-emitting pattern 150 is 90 degrees or more and less than 360 degrees, and the cross-section of the light-emitting pattern 150 has the shape of a right triangle or an isosceles triangle. The cross-section is a plane cut in a direction perpendicular to the one surface 110 and passing through the center of the base.

Description

Technical Field

[0001] The present invention relates to a light-emitting member and a display device including the same, and more particularly, to a light-emitting member capable of improving vertical light-emitting characteristics and a display device including the same.

Background Art

[0002] FIG. 1 is a drawing for explaining a conventional light-emitting member.

[0003] Referring to FIG. 1, in a conventional light-emitting member 10, a large number of light-emitting patterns 15 in an intaglio form are formed on one surface. The light-emitting patterns 15 have a cross-section in the form of a pillar or a trench.

[0004] In order to protect the large number of light-emitting patterns 15 of such a light-emitting member 10 with an adhesive protection film, when an adhesive protection film is laminated on one surface (pattern surface) of the light-emitting member 10, due to the cross-sectional structure of the light-emitting pattern 15, a soft adhesive layer 20 like foam in the adhesive protection film easily enters into the intaglio pattern and is likely to embed the pattern.

[0005] In such a case, a part of the light-emitting pattern 15 may be embedded in the adhesive layer 20, or the size of the light-emitting pattern 15 may become smaller, or all of the light-emitting pattern 15 may be embedded in the adhesive layer 20.

[0006] Also, as shown in FIG. 2, when the refractive index of the adhesive layer 20 is the same as or similar to the refractive index of the light-emitting member 10, if a part or all of the light-emitting pattern 15 is embedded in the adhesive layer 20, the difference in refractive index between the light-emitting member 10 and the adhesive layer 20 is almost eliminated, and the total reflection effect generated at the interface when the difference in refractive index between media is large disappears. Therefore, light cannot be extracted from the light-emitting pattern 15.

[0007] While some light emission patterns have had inclined surfaces, if the bottom surface of the incised pattern is not pointed but flat, it hinders the formation of the light emission angle of the light emission member primarily in the vertical direction.

[0008] On the other hand, if the shape of the light emission pattern in the top view is an arc shape or deviates from an elliptical arc shape, the incident light rays due to the arrangement / radiation angle of the light source will not mix sufficiently in various directions, resulting in the so-called "searchlight phenomenon (emission ray phenomenon)." [Overview of the project] [Problems that the invention aims to solve]

[0009] The problem that this invention aims to solve is to provide a light-emitting member that can improve vertical light emission characteristics and a display device including the same.

[0010] Furthermore, the objective is to provide a light-emitting component that can improve the searchlight phenomenon and a display device including the same.

[0011] Furthermore, the objective is to provide an Idemitsu member in which the adhesive layer of the protective film is not embedded in the Idemitsu pattern, and a display device including the same. [Means for solving the problem]

[0012] An embodiment of the present invention provides a light-emitting member comprising one side surface, one surface on which a plurality of light-emitting patterns are formed, and another surface from which light reflected and / or refracted from the plurality of light-emitting patterns is emitted, wherein the light-emitting patterns are incised patterns corresponding to a part of a cone having a base surface and a predetermined depth, the base surface of the light-emitting patterns is fan-shaped, the central angle of the base surface of the light-emitting patterns is 90 degrees or more and less than 360 degrees, the cross-section of the light-emitting patterns has the shape of a right triangle or an isosceles triangle, and the cross-section is a plane cut in a direction perpendicular to the one surface passing through the center of the base surface. [Effects of the Invention]

[0013] Using the light-emitting member and display device containing the same according to the embodiments of the present invention has the advantage of improving vertical light emission characteristics.

[0014] Furthermore, it has the advantage of being able to improve the searchlight effect.

[0015] Furthermore, the adhesive layer of the protective film has the advantage of not being embedded in the Idemitsu pattern. [Brief explanation of the drawing]

[0016] [Figure 1] Figure 1 is a diagram illustrating a conventional Idemitsu component. [Figure 2] Figure 2 is a diagram illustrating why light is not emitted when the adhesive layer is embedded in the light-emitting pattern. [Figure 3] Figure 3 is a plan view of the Idemitsu member 100 according to one embodiment of the present invention. [Figure 4] Figure 4 is a cross-sectional view taken along line A-A' shown in Figure 3. [Figure 5] Figure 5 is a diagram illustrating the perspective view, base shape, and cross-sectional shape of only the Idemitsu pattern 150 shown in Figures 3 and 4. [Figure 6] Figures 6 to 9 are diagrams illustrating the perspective views, base shapes, and cross-sectional shapes of various modified examples of the Idemitsu pattern 150 shown in Figure 5. [Figure 7] Figures 6 to 9 are diagrams illustrating the perspective views, base shapes, and cross-sectional shapes of various modified examples of the Idemitsu pattern 150 shown in Figure 5. [Figure 8] Figures 6 to 9 are diagrams illustrating the perspective views, base shapes, and cross-sectional shapes of various modified examples of the Idemitsu pattern 150 shown in Figure 5. [Figure 9] Figures 6 to 9 are diagrams illustrating the perspective views, base shapes, and cross-sectional shapes of various modified examples of the Idemitsu pattern 150 shown in Figure 5. [Figure 10]FIG. 10 is a drawing comparing the total flux and the maximum luminance of the light emitted from a display device having the light emission patterns 150, 150', 150'', 150''', 150'''' shown in FIGS. 5 to 9. [Figure 11] FIG. 11 is a plan view of a light emitting member 200 according to another embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view taken along line B-B' shown in FIG. 11. [Figure 13] FIG. 13 is a perspective view of only the light emission pattern 250 shown in FIGS. 11 and 12, and a drawing for explaining the bottom surface shape and the cross-sectional shape. [Figure 14] FIGS. 14 and 15 are perspective views of various modified examples of the light emission pattern 250 shown in FIG. 13, and drawings for explaining the bottom surface shape and the cross-sectional shape. [Figure 15] FIGS. 14 and 15 are perspective views of various modified examples of the light emission pattern 250 shown in FIG. 13, and drawings for explaining the bottom surface shape and the cross-sectional shape. [Figure 16] FIG. 16(a) is a photograph of light emission on the light emitting surface when light is incident on the incident surface of the light emitting members 100 and 200 having the light emission patterns 150, 150', 150'', 150''', 150'''' shown in FIGS. 5 to 9 and the light emission patterns 250, 250', 250'' shown in FIGS. 13 to 15, and FIG. 16(b) is a photograph of light emission on the light emitting surface of a conventional light emitting member. [Figure 17] FIG. 17(a) is a cross-sectional view of a display device including the light emitting member 100 shown in FIG. 4, and FIG. 17(b) is a cross-sectional view of a display device including the light emitting member 200 shown in FIG. 12. [Figure 18] FIGS. 18(a) and (b) are drawings for explaining a light emitting member according to still another embodiment of the present invention. [Figure 19] FIG. 19(a) is a cross-sectional view of a display device including the light emitting member 300 shown in FIG. 18(a), and FIG. 19(b) is a cross-sectional view of a display device including the light emitting member 400 shown in FIG. 18(b). [Figure 20]Figure 20 shows the luminance distribution diagrams for the display device shown in Figure 17(a) (without protective film) and the display device shown in Figure 19(a) (with protective film). [Figure 21] Figure 21 shows the luminance distribution diagrams for the display device shown in Figure 17(b) (without protective film) and the display device shown in Figure 19(b) (with protective film). [Figure 22] Figure 22 is a cross-sectional view of the light-emitting member 900 according to yet another embodiment of the present invention. [Figure 23] Figure 23 is a diagram illustrating the perspective view, base shape, and cross-sectional shape of only the Idemitsu pattern 950 shown in Figure 22. [Figure 24] Figure 24 is a luminance distribution diagram of a display device having the light-emitting member 900 shown in Figures 22 and 23. [Figure 25] Figure 25 is a diagram illustrating a perspective view and bottom shape of a modified version of the Idemitsu pattern 950 shown in Figure 23. [Modes for carrying out the invention]

[0017] A detailed description of preferred embodiments of the present invention will be provided below with reference to the accompanying drawings. It should be noted that reference numerals and identical components in the drawings will be referred to by the same numerals whenever possible, even if they appear in other drawings. For reference purposes, detailed descriptions of related known functions or configurations will be omitted if it is deemed that such descriptions would unnecessarily obscure the gist of the present invention.

[0018] Figure 3 is a plan view of the light-emitting member 100 according to one embodiment of the present invention, Figure 4 is a cross-sectional view of the line A-A' shown in Figure 3, and Figure 5 is a perspective view, bottom shape, and cross-sectional shape of only the light-emitting pattern 150 shown in Figures 3 and 4.

[0019] Referring to Figures 3 to 5, the light-emitting member 100 according to one embodiment of the present invention has a plate shape of a predetermined thickness.

[0020] The light-emitting member 100 may be made of a material that allows light to pass through.

[0021] The Idemitsu component 100 may be made of a strong or flexible material. For example, the Idemitsu component 100 may be made of resin or PMMA.

[0022] The light-emitting member 100 has one surface 110 (or a patterned surface). Numerous light-emitting patterns 150 are formed on the one surface 110.

[0023] The numerous Idemitsu patterns 150 may be arranged regularly or randomly.

[0024] The light-emitting member 100 has another surface 130 (or light-emitting surface). Light that has been reflected or refracted by the light-emitting pattern 150 through the other surface 130 is emitted.

[0025] The light-emitting member 100 has a number of sides arranged between one surface 110 and the other surface 130. One of the many sides, side 120, may be the incident surface to which light from the light source 1000 is incident.

[0026] The Idemitsu pattern 150 is an intaglio pattern. The Idemitsu pattern 150 may also be called a cavity. The Idemitsu pattern 150 may have a shape corresponding to a part of a cone.

[0027] The bottom surface 151 of the light-emitting pattern 150 is fan-shaped. The arc portion of the fan-shaped bottom surface 151 is positioned so as to face one side surface 120. Because the arc portion is positioned so as to face one side surface 120, there is an advantage in that the searchlight phenomenon (bright line phenomenon) does not occur on the other surface 130, which is the light-emitting surface. Here, the bottom surface 151 is positioned on the same plane as the one surface 110.

[0028] The central angle θ1 of the base surface 151 of the sector shape may be 90 degrees.

[0029] The cross-section 153 of the Idemitsu pattern 150 is a right triangle. Here, the cross-section 153 is the plane obtained by cutting the Idemitsu pattern 150 perpendicular to one surface 110, passing through the center of the base surface 151 of the sector shape.

[0030] The inclination angle θ2 of the cross-section 153 of the right triangle may be 50 degrees or more and 60 degrees or less. Preferably, the inclination angle θ2 may be 52 degrees or more and 56 degrees or less. More preferably, the inclination angle θ2 may be 54 degrees.

[0031] The radius d1 of the base surface 151 of the sector shape may be shorter than the height d2 of the cross-section 153 of the right triangle. Here, the height d2 may also be referred to as the depth of the light emission pattern 150.

[0032] Figures 6 to 9 are diagrams illustrating the perspective views, base shapes, and cross-sectional shapes of various modified examples of the Idemitsu pattern 150 shown in Figure 5.

[0033] The light emission pattern 150' shown in Figure 6 differs from the light emission pattern 150 shown in Figure 5 in the central angle θ1' of the base surface 151' of the fan shape. The central angle θ1' is 120 degrees.

[0034] The light emission pattern 150'' shown in Figure 7 differs from the light emission pattern 150 shown in Figure 5 in the central angle θ1'' of the fan-shaped base surface 151''. The central angle θ1'' is 180 degrees.

[0035] The light emission pattern 150'' shown in Figure 8 differs from the light emission pattern 150 shown in Figure 5 in the central angle θ1'' of the base surface 151'''' of the fan shape. The central angle θ1'''' is 240 degrees.

[0036] The light emission pattern 150'''' shown in Figure 9 differs from the light emission pattern 150 shown in Figure 5 in the central angle θ1'''' of the fan-shaped base surface 151''''. The central angle θ1'''' is 270 degrees.

[0037] The light emission patterns 150, 150', 150'', 150''', 150'''' shown in Figures 5 to 9 include the light emission patterns, and the central angle of the base of the light emission pattern according to the embodiment of the present invention may be 90 degrees or more and less than 360 degrees. Here, the central angle of the base may be 90 degrees or more and less than 180 degrees, or more than 180 degrees and less than 360 degrees. If the central angle of the base is less than 90 degrees, it may be disadvantageous in terms of eliminating the searchlight phenomenon.

[0038] Figure 10 is a diagram comparing the light output (Total Flux) and maximum brightness from a display device having the light output patterns 150, 150', 150'', 150''', 150'''' shown in Figures 5 to 9.

[0039] Referring to Figure 10, it can be seen that if a light-emitting member having the light emission pattern 150, 150', 150'', 150''', 150'''' shown in Figures 5 to 9 is used, most of the light will be well focused and emitted towards the vertical center (vertical emission). Therefore, by removing the diffusion sheet and the two prism sheets from a conventional backlight unit and applying only the light-emitting member having the light emission pattern 150, 150', 150'', 150''', 150'''' shown in Figures 5 to 9, it is possible to produce light that is almost identical to the vertically emitted light that can be produced by a conventional backlight unit. Furthermore, since the diffusion sheet and the two prism sheets used in conventional backlight units can be removed, there is also the advantage of being able to construct a relatively thinner display device.

[0040] Figure 11 is a plan view of the light-emitting member 200 according to another embodiment of the present invention, Figure 12 is a cross-sectional view at B-B' shown in Figure 11, and Figure 13 is a perspective view, bottom shape, and cross-sectional shape illustrating only the light-emitting pattern 250 shown in Figures 11 and 12.

[0041] Referring to Figures 11 to 13, the light-emitting member 200 according to another embodiment of the present invention has a plate shape of a predetermined thickness.

[0042] The light-emitting member 200 may be made of a material that allows light to pass through.

[0043] The Idemitsu component 200 may be made of a strong or flexible material. For example, the Idemitsu component 200 may be made of resin or PMMA.

[0044] The light-emitting member 200 has one surface 210 (or a patterned surface). A large number of light-emitting patterns 250 are formed on the one surface 210. The large number of light-emitting patterns 250 may be arranged regularly or randomly.

[0045] The light-emitting member 200 has another surface 230 (or light-emitting surface). Light reflected by the light-emitting pattern 250 is emitted via the other surface 230.

[0046] The light-emitting member 200 has a number of sides arranged between one surface 210 and the other surface 230. One of these sides, side 220, becomes the incident surface to which light from the light source 1000 is incident.

[0047] The Idemitsu pattern 250 is an intaglio pattern. The Idemitsu pattern 250 may also be called a cavity. The Idemitsu pattern 250 may have a shape corresponding to a part of a cone.

[0048] The bottom surface 251 of the light-emitting pattern 250 is fan-shaped. The arc portion of the fan-shaped bottom surface 251 is positioned so as to face one side surface 220. Because the arc portion is positioned so as to face one side surface 220, when light is incident on one side surface 220, there is an advantage that the searchlight phenomenon (bright line phenomenon) does not occur on the other surface 230, which is the light-emitting surface. Here, the bottom surface 251 is positioned on the same plane as one surface 210.

[0049] The central angle θ3 of the base 251 of the sector shape may be 90 degrees or more and less than 360 degrees. Here, the central angle θ3 of the base 251 of the sector shape may be 90 degrees or more and less than 180 degrees, or more than 180 degrees and less than 360 degrees.

[0050] The cross-section 253 of the Idemitsu pattern 250 is an isosceles triangle. Here, the cross-section 253 is the plane obtained by cutting the Idemitsu pattern 250 perpendicular to one surface 210, passing through the center of the base surface 251 of the sector shape.

[0051] The inclination angle θ4 of the cross-section 253 of the isosceles triangle may be 50 degrees or more and 60 degrees or less. Preferably, the inclination angle θ4 may be 52 degrees or more and 56 degrees or less. More preferably, the inclination angle θ4 may be 54 degrees.

[0052] The radius d3 of the base 251 of the sector shape may be shorter than the height d4 of the isosceles triangular cross-section 253. The height d4 may also be referred to as the depth of the light emission pattern 250.

[0053] Figures 14 and 15 are diagrams illustrating the perspective views, base shapes, and cross-sectional shapes of various modifications of the Idemitsu pattern 250 shown in Figure 13.

[0054] The light emission pattern 250' shown in Figure 14 differs from the light emission pattern 250 shown in Figure 13 in the central angle θ3' of the base surface 251' of the fan shape. The central angle θ3' is 180 degrees.

[0055] The light emission pattern 250'' shown in Figure 15 differs from the light emission pattern 250 shown in Figure 13 in the central angle θ3'' of the base 251'' of the fan shape. The central angle θ3'' is 240 degrees.

[0056] Figure 16(a) is a photograph of the light emission on the light emission surface when light is incident on the incident surface of light emission members 100, 200 having the light emission patterns 150, 150', 150'', 150'''', 150'''' shown in Figures 5 to 9 and the light emission patterns 250, 250', 250'' shown in Figures 13 to 15. Figure 16(b) is a photograph of the light emission on the light emission surface of a conventional light emission member. Here, the light emission pattern of the conventional light emission member in Figure 16(b) is an intaglio pattern and has a trapezoidal base surface 5.

[0057] Referring to Figure 16(b), the bottom surface 5 of the light-emitting pattern of a conventional light-emitting member is trapezoidal, and the portion facing the incident surface is linear, resulting in a searchlight phenomenon where a portion of the light-emitting surface shines brightly in a straight line, unlike other parts. However, as shown in Figure 16(a), the light-emitting members 100 and 200 according to the embodiment of the present invention have the advantage that the portion of the bottom surface of the light-emitting pattern that is located on the incident surface side is circular, thus preventing the searchlight phenomenon shown in Figure 16(b) from occurring on the light-emitting surface.

[0058] Figure 17(a) is a cross-sectional view of a display device including the light-emitting member 100 shown in Figure 4, and Figure 17(b) is a cross-sectional view of a display device including the light-emitting member 200 shown in Figure 12.

[0059] Referring to Figure 17(a), a display device according to one embodiment of the present invention may include a light-emitting member 100 having a number of light-emitting patterns 150, and a light-guiding member 500 disposed on the light-emitting member 100. Although not shown separately, a reflective member may be further disposed below the light-emitting member 100, and one or more light sources may be further disposed to provide light to one side of the light-guiding member 500 and / or one side of the light-emitting member 100.

[0060] Referring to Figure 17(b), a display device according to another embodiment of the present invention may include a light-emitting member 200 having a number of light-emitting patterns 250, and a light-guiding member 500 disposed on the light-emitting member 200. Although not shown separately, a reflective member may be further disposed below the light-emitting member 200, and one or more light sources may be further disposed to provide light to one side of the light-guiding member 500 and / or one side of the light-emitting member 200.

[0061] Figures 18(a) and 18(b) are drawings illustrating light-emitting members according to yet another embodiment of the present invention.

[0062] The Idemitsu member 300 shown in Figure 18(a) further includes an adhesive layer 170 disposed on one surface 110 of the Idemitsu member 100 shown in Figure 4.

[0063] The adhesive layer 170 may be a component of the protective film (not shown) as a layer coated with an adhesive substance on one surface of the protective film (not shown). The protective film (not shown) may be laminated to one surface 110 of the light emitter member 100 via the adhesive layer 170.

[0064] As mentioned in Figure 5, the radius d1 of the bottom surface 151 of the light-emitting pattern 150 is smaller than the height d2 of the cross-section 153 of the light-emitting pattern 150, making it difficult for the adhesive layer 170 to be embedded inside the light-emitting pattern 150. Therefore, as mentioned in Figure 2, the problem of conventional adhesive layers being embedded in the light-emitting pattern and preventing light emission from occurring at the light-emitting surface can be solved.

[0065] The Idemitsu member 400 shown in Figure 18(b) further includes an adhesive layer 270 disposed on one surface 210 of the Idemitsu member 200 shown in Figure 12.

[0066] The adhesive layer 270 may be a component of the protective film (not shown) as a layer coated with an adhesive substance on one surface of the protective film (not shown). The protective film (not shown) may be laminated to one surface 210 of the Idemitsu member 200 via the adhesive layer 270.

[0067] As mentioned in Figure 13, since the radius d3 of the bottom surface 251 of the light-emitting pattern 250 is smaller than the height d4 of the cross-section 253 of the light-emitting pattern 250, the adhesive layer 270 is less likely to be embedded inside the light-emitting pattern 250. Therefore, as mentioned in Figure 2, the problem of conventional adhesive layers being embedded in the light-emitting pattern and preventing light emission from occurring at the light-emitting surface can be solved.

[0068] Figure 19(a) is a cross-sectional view of a display device including the light-emitting member 300 shown in Figure 18(a), and Figure 19(b) is a cross-sectional view of a display device including the light-emitting member 400 shown in Figure 18(b).

[0069] Referring to Figure 19(a), a display device according to yet another embodiment of the present invention may include a light-emitting member 100 having a number of light-emitting patterns 150, a light-guiding member 500 disposed on the light-emitting member 100, an adhesive layer 170 disposed below the light-emitting member 100, and a protective film 700 disposed below the adhesive layer 170. Here, the adhesive layer 170 may be one component of the protective film 700. On the other hand, although not shown separately, a reflective member may be further disposed below the protective film 700, and one or more light sources may be further disposed to provide light to one side of the light-guiding member 500 and / or one side of the light-emitting member 100.

[0070] Referring to Figure 19(b), a display device according to yet another embodiment of the present invention may include a light-emitting member 200 having a number of light-emitting patterns 250, a light-guiding member 500 disposed on the light-emitting member 200, an adhesive layer 270 disposed below the light-emitting member 200, and a protective film 700 disposed below the adhesive layer 270. Here, the adhesive layer 270 may be one component of the protective film 700. On the other hand, although not shown separately, a reflective member may be further disposed below the protective film 700, and one or more light sources may be further disposed to provide light to one side of the light-guiding member 500 and / or one side of the light-emitting member 200.

[0071] Figure 20 shows the luminance distribution diagrams for the display device shown in Figure 17(a) (without protective film) and the display device shown in Figure 19(a) (with protective film).

[0072] Referring to Figure 20, we can confirm that there is almost no difference between the brightness distribution of the display device in Figure 17(a) (without protective film) and the brightness distribution of the display device in Figure 19(a) (with protective film). This indicates that in the display device in Figure 19(a) (with protective film), the adhesive layer 170 is hardly embedded in the numerous light-emitting patterns 150 of the light-emitting member 100, and the optical characteristics are similar to those of the display device in Figure 17(a) (without protective film).

[0073] Figure 21 shows the luminance distribution diagrams for the display device shown in Figure 17(b) (without protective film) and the display device shown in Figure 19(b) (with protective film).

[0074] Referring to Figure 21, we can confirm that there is almost no difference between the brightness distribution of the display device in Figure 17(b) (without protective film) and the brightness distribution of the display device in Figure 19(b) (with protective film). This indicates that in the display device in Figure 19(b) (with protective film), the adhesive layer 270 is hardly embedded in the numerous light-emitting patterns 250 of the light-emitting member 200, and the optical characteristics are similar to those of the display device in Figure 17(b) (without protective film).

[0075] Figure 22 is a cross-sectional view of the light-emitting member 900 according to yet another embodiment of the present invention, and Figure 23 is a perspective view, bottom shape and cross-sectional shape illustrating only the light-emitting pattern 950 shown in Figure 22.

[0076] Referring to Figures 22 and 23, the Idemitsu member 900 according to yet another embodiment of the present invention has a plate shape of a predetermined thickness.

[0077] The light-emitting member 900 may be made of a material that allows light to pass through.

[0078] The Idemitsu component 900 may be made of a strong or flexible material. For example, the Idemitsu component 900 may be made of resin or PMMA.

[0079] The light-emitting member 900 has one surface 910 (or a patterned surface). Numerous light-emitting patterns 950 are formed on the one surface 910.

[0080] The light-emitting member 900 has another surface 930 (or light-emitting surface). Light reflected by the light-emitting pattern 950 is emitted via the other surface 930.

[0081] The light-emitting member 900 has a number of sides arranged between one surface 910 and the other surface 930. One of these sides, 920, becomes the incident surface to which light from the light source 1000 is incident.

[0082] The bottom surface 951 of the Idemitsu pattern 950 is circular and donut-shaped.

[0083] The cross-section 953 of the Idemitsu pattern 950 is an isosceles triangle. More specifically, the cross-section 953 has a shape in which two isosceles triangles are arranged at a predetermined interval. Here, the cross-section 953 is the plane obtained by cutting the Idemitsu pattern 950 perpendicular to one surface 910, passing through the center of the bottom surface 951.

[0084] Figure 24 is a luminance distribution diagram of a display device having the light-emitting member 900 shown in Figures 22 and 23.

[0085] Referring to Figure 24, it can be confirmed that the display device having the light-emitting member 900 shown in Figures 22 and 23 effectively concentrates light towards the center.

[0086] Furthermore, the display device having the light-emitting member 900 may further include a protective film (not shown) laminated to one surface 910 of the light-emitting member 900, as shown in Figures 19(a) and (b). Because the bottom surface 951 of the light-emitting pattern 950 has a circular donut shape, the adhesive layer of the protective film (not shown) is less likely to be embedded in the light-emitting pattern 950. Therefore, as mentioned in Figure 2, the problem of conventional adhesive layers being embedded in the light-emitting pattern and preventing light emission from the light-emitting surface can be solved.

[0087] Figure 25 is a diagram illustrating a perspective view and bottom shape of a modified version of the Idemitsu pattern 950 shown in Figure 23.

[0088] The modified Idemitsu pattern 950' shown in Figure 25 is identical to the Idemitsu pattern 950 shown in Figure 23 in that its base surface 951' has a circular donut shape, but it differs in that a notch 955 is formed in a part of the base surface 951'. The notch 955 causes the overall shape of the Idemitsu pattern 950' to differ from the Idemitsu pattern 950 shown in Figure 23. The notch 955 creates an air passage to allow air to escape well when forming a large number of Idemitsu patterns 950' on the Idemitsu member using the imprint method.

[0089] The modified Idemitsu pattern 950' shown in Figure 25 also has a circular, donut-shaped base 951', which has the advantage that the adhesive layer of the protective film (not shown) is less likely to become embedded in the Idemitsu pattern.

[0090] A protective film (not shown) may be further placed on one surface of the light-emitting member having the light-emitting pattern 950' as shown in the modified example in Figure 25.

[0091] While embodiments of the present invention have been described above with reference to the attached drawings, these are merely illustrative and do not limit the invention. Those with ordinary skill in the art to which the invention pertains will understand that various modifications and applications not exemplified above are possible without departing from the essential characteristics of these embodiments. For example, each component specifically shown in the embodiments can be modified and implemented. Any differences related to such modifications and applications should be interpreted as being within the scope of the present invention as defined in the attached claims. [Explanation of symbols]

[0092] 100, 200, 300, 400, 900: Idemitsu components 150,250,950: Idemitsu pattern 170,270: Adhesive layer 500: Light guide member 700: Protective film 1000: Light source

Claims

1. One aspect, One side had numerous Idemitsu patterns formed on it, The other surface includes the light emitted from the light reflected and / or refracted from the aforementioned numerous light-emitting patterns, The aforementioned light-emitting pattern is an incised pattern corresponding to a part of a cone having a base and a predetermined depth. The bottom surface of the aforementioned Idemitsu pattern is fan-shaped, The central angle of the bottom surface of the aforementioned light pattern is 90 degrees or more and less than 360 degrees. The cross-section of the light emission pattern has a right-angled triangular shape. The cross-section is a plane cut through the center of the bottom surface in a direction perpendicular to the surface. The arc portion of the bottom surface of the aforementioned light pattern is a light-emitting member arranged to face the one side surface.

2. The light-emitting member according to claim 1, wherein the radius of the bottom surface is smaller than the depth.

3. The Idemitsu member according to claim 1, further comprising a protective film having an adhesive layer, disposed on the aforementioned surface.

4. One aspect, One side had numerous Idemitsu patterns formed on it, The other surface includes the light emitted from the light reflected and / or refracted from the aforementioned numerous light-emitting patterns, The aforementioned Idemitsu pattern is an incised pattern having a circular donut-shaped base, The cross-section of the light pattern has an isosceles triangular shape. The cross-section is a plane cut through the center of the bottom surface in a direction perpendicular to the surface. The isosceles triangular shape is an Idemitsu member having a base included in the base surface and one vertex arranged in the direction from one surface to the other surface.

5. The Idemitsu member according to claim 4, wherein the cross-section includes two isosceles triangles spaced apart from each other.

6. The Idemitsu member according to claim 4, wherein the bottom surface of the Idemitsu pattern has a notched portion in which a part is cut out.

7. The light-emitting member according to any one of claims 1 to 6, A light source that provides light to at least one side of the light-emitting member Display devices, including

8. The display device according to claim 7, wherein the diffusion sheet and prism sheet are not arranged on the light-emitting member.

9. The light-emitting member according to any one of claims 1 to 6, A light guide member disposed on the light-emitting member, A light source that provides light to at least one side of the light guide member Display devices, including

10. The display device according to claim 9, wherein the diffusion sheet and prism sheet are not arranged on the light guide member.

Images