TWI364730B - Light-emitting panel - Google Patents

Description

1364730 100 years. After December 26th, the page is replaced. Page 6 Description of the Invention: [Technical Field] [0001] The present invention relates to a light-emitting panel, and more particularly to a light-emitting panel using a solid-state light source such as a light-emitting diode as a light source . [Prior Art] [0002] The light-emitting panel is widely used in the fields of advertising signage, traffic signage, etc., and can be used as an illumination display of an instrument panel. The conventional illuminating panel uses the acrylic sheet as the material 'Cold Cath- ^ 〇 de Fluorescent Lamp (CCFL) as the light source, but the cold fluorescent lamp has low luminous efficiency and cold yin The mercury contained in the light will have an impact on the environment. [0003] It is seen that the Light Emitting Diode (LED) has a good light quality (that is, the spectrum emitted by the LED light source) and high luminous efficiency, and gradually replaces the Cold Cathode Fluorescent Lamp (CCFL). As a light source, see "Solid-State Lighting: Toward Superior Illumination" by Michael S. Shur et al., Proceedings of the IEEE, # Vo1. 93, No. 1 0 (October 2005). For this case, US Patent No. 6,539,656 discloses a light-emitting panel that uses a light-emitting body as a light-emitting source. As shown in FIG. 1 , the light-emitting panel 1 includes a light source 11 and a plate body 12 made of a transparent material. The plate body 12 includes a light-emitting surface 13 , a bottom surface 14 , a side surface 151 , and a plurality of defects 16 in the plate body. . The panel 1 is in the form of a side light source, and the light source 丄1 is disposed on one side of the board body, and the light source 11 is a solid state light source such as a light emitting diode 096151113. Form No. A0101 Page 3/18 pages 1003480441-0 1364730 100 years.12 On the 26th, the shuttle is replacing the page.

The light emitted by the light source 11 is incident into the plate body 1 2 via the side surface 1 51 of the plate body 1 2 and propagates through the plate body 12. Based on the principle of total reflection, unless the light encounters a defect, the light wave reciprocates within the plate. As shown in FIG. 4, the defect 16 constitutes a triangular prism 207, which includes a bottom surface 2071, a front side surface 2074, a rear side surface 2075, a left side surface 2072, and a right side surface 2073. The defect 16 breaks the original smooth plane without causing total reflection. The light inside the panel 12 is emitted through the light-emitting surface 13 to the light-emitting panel 10. When light strikes the front side 2074 in the a direction, the light will pass through the triangular prism, exiting in the a' direction from the rear side 2 0 7 5; when the light is incident on the right side 2073 in the b direction perpendicular to the a direction The light will reflect in the b' direction. As shown in FIGS. 2 and 3, the complex defects 16 are arranged in a vertical and parallel manner, respectively, and combined into a complex symbol. For example, the horizontal defect 108 constitutes the character "C" 128, and the vertical defect 107 constitutes the character "0" 127, the light source. 101 '102 is correspondingly set in the horizontal and vertical directions. When the light source 102 in the vertical direction emits light, the light is reflected by the defect 107 in the vertical direction, and then the light-emitting panel 10 is emitted through the light-emitting surface 13 to display the symbol "0" 127 formed by the vertical direction defect 107; otherwise, when the light is horizontal When the light source 101 emits light, the light is reflected by the horizontal direction defect 108, and then the light-emitting panel 10 is emitted through the light-emitting surface 13 to display the symbol "C" 128 formed by the horizontal defect 108. [0005] Since the defects can only be arranged in the vertical and horizontal directions, the same light-emitting panel can only display two different characters or patterns, and the information of the light-emitting panel is small and monotonous. SUMMARY OF THE INVENTION [0006] In view of the above, it is necessary to provide a light-emitting panel that displays rich content. 096151113 Form No. A0101 Page 4 of 18 1003480441-0 1364730 « 4 [0007] ...' December 26, 2014 Correction Replacement Page A light-emitting panel comprising at least one light source and a plate made of a transparent material, The plate body comprises a light emitting surface and a light incident surface, and the light source is disposed opposite to the light incident surface, and the light emitting surface is distributed with a plurality of micro structures, wherein the light source is used to switchably provide at least two different colors of monochromatic light, and the plurality of micro structures constitute a plurality of display groups, the microstructures of the same display group are coated with dyes of the same color, and the microstructures of different display groups are coated with dyes of different colors, and the color of the monochromatic light provided by the light source and the microstructure of the corresponding display group are The dyes applied on the same color are the same.

[0008] The dye has a light absorbing effect. When the light encounters a dye coated with a single color, light of a color different from the dye is absorbed by the dye, and light having the same color as the dye can pass the dye, so that the light panel is displayed. The colorful information is displayed, and by switching the color of the light source, the same information is displayed at different times on the same panel. [Embodiment]

[0009] Hereinafter, the light-emitting panel will be further described with reference to the drawings. As shown in FIGS. 5 and 6, a light-emitting panel 50 includes a light source 51 and a plate body 52 made of a transparent material. The plate body 52 includes a light-emitting surface 53, a bottom surface 54 opposite to the light-emitting surface 53, a side surface 55 between the light-emitting surface 53 and the bottom surface 54, and a plurality of microstructures on the light-emitting surface 53, the microstructure being a pit 56. The plate material is polyacrylic acid decyl acrylate (PMMA), polycarbonate (PC) 'resin material (res-in), glass (glass), organic stone eve (si 1 icone), epoxy resin (epoxy), etc. 4-1. 7. The polymer having a light transmittance of at least 70%, a refractive index of 1. 4-1. 7. The light-emitting panel 50 is in the form of a side light source, and the side surface 55 is a light incident surface, the light incident surface is adjacent to the light exit surface 53, and the light source 51 is disposed opposite to the side surface 5 5 . The light source 51 includes a plurality of different monochromatic light solid state light emitting components, 096151113 Form No. A0101 Page 5 of 18 pages 1003480441-0 1364730 100 years. On December 26th, the shuttle is replacing the page and switching to provide at least two different colors. Color light, such as red light, orange light, yellow light, green light, neon light, blue light or violet light emitting diode, is mounted in the form of adhesive (SMD) or the like. The light emitted from the light source 51 is incident into the plate body 52 via the side surface 55 of the plate body 52, and propagates through the plate body 52.

Based on the principle of total reflection, light reciprocates within the plate 52. The light-emitting surface 53 of the light-emitting panel 50 is distributed with a plurality of pits 56. The shape of the pit 56 is a cone, a triangular pyramid, a quadrangular pyramid, a regular tetrahedron, a cube, a hemisphere, etc., and the pit 56 destroys the original The smooth plane is not totally reflected, so that when the light contacts the pit 56, the light emitting panel 50 is penetrated.

[0010] The pit 56 is coated with a dye which is a light-transmitting dye and has a light transmissive property, and the color thereof is any one of red orange, yellow, green, blue, purple and purple. The dye completely coats the surface of the single pit 56 or only the surface portion of the single pit 56. If the pit is coated with a dye, when light passes through a single color dye, light of a different color from the dye is absorbed by the dye, and light of the same color as the dye filters out the dye. For example, the pit 56 is coated with a red dye. When the light source 51 is a red light emitting diode, when the red light emitted by the light emitting diode passes through the pit 56, the red light filters out the pit 56 and is emitted. When the light source 51 is a light-emitting diode other than the red light-emitting diode, when the light emitted by the light-emitting diode passes through the concave point 56, it is absorbed by the red dye and cannot be emitted from the light-emitting surface. 53. [0011] The pits 56 constitute a plurality of display groups, each of which constitutes a character, a character combination or a pattern, and the pits 56 constituting the same display group are coated with dyes of the same color to form pits 56 of different display groups. There are dyes of different colors. The light source 51 includes a plurality of monochromatic light sources, the color of the monochromatic light source 096151113 Form No. A0101 Page 6 / 18 pages 100348044 Bu 0 1364730 I < « 100 years. December 26 revised replacement page and its corresponding display group concave The color of the dye applied at the point is the same. As shown in FIG. 5, the pits 56 respectively constitute a first display group 58 and a second display group 59. The pits 561 of the first display group 58 constitute an uppercase English character "F", and the pit 561 is painted with red. The dye, the pit 562 of the second display group 59 constitutes a digital character "Γ, and the pit 562 is coated with a yellow dye, and the light source 51 includes a red light source 511 and a yellow light source 512, and switches between red and yellow light. When only the red light source 511 is turned on, only the red uppercase English character "F" is displayed on the light-emitting panel 50; when only the yellow light source 512 is turned on, only the yellow digital character "Γ" is displayed on the light-emitting panel 50; When the light source 511 and the yellow light source 512 are used, the light-emitting panel 50 simultaneously displays the uppercase English character "F" and the yellow digital character "1".

[0012] Each display group may constitute any character such as a Chinese character or an English character; or a combination of characters formed by any character; or a pattern; or a combination of a pattern and a character. The color of the dye applied to the pits 56 of each display group is any one of red orange, yellow, green, blue, purple, and the like, as long as the colors of the dyes applied to the pits 56 of the different display groups are different. The invention does not limit the number of display groups. Therefore, the rich information is displayed on the same light-emitting panel, and by switching the monochromatic light of the light source 51, the light source 51 emits light of different colors, thereby displaying different information on the same panel at different times. As shown in FIG. 7, the light-emitting panel 50 has a bottom surface 54 as a light incident surface, a light incident surface facing the light-emitting surface 53, and a light source 51 opposed to a bottom surface 54 of the plate body 52. [0014] In order to allow light to be transmitted from the light-emitting surface as much as possible without leaking from other surfaces, it is available in 096151113 Form No. A0101 Page 7 / Total 18 Page 1003480441-0 1364730 100. December 26 Correction Replacement Page Bottom 54 Plating A material having a high reflectance, such as mercury, Al, Ag, Au, Cu, or the like, forms a reflective layer 57. [0015] The pits 56 are suitably implemented by semiconductor processing methods such as etching, laser engraving, stamping, and the like. The etching method comprises the steps of: firstly covering a light-emitting surface with a protective film; secondly, removing the protective film of the region to be etched by exposure plate making and developing; finally, adding a chemical solution in the region where the protective film is removed to achieve dissolution and corrosion. , thereby forming a pit 56. [0016] The so-called laser engraving means that a laser of high energy density locally irradiates the light-emitting surface to vaporize or chemically change the surface material of the light-emitting surface, thereby forming pits 56. [0017] The pit 56 is also formed by a mold forming method, for example, a method of injection molding, that is, using a precision mold to add optical grade PMMA particles into a mold under high temperature and high pressure, and adding a small amount of particles having different refractive indexes. The material is formed directly to form a small pit 56 of the dense cloth.

8 is a different embodiment of the present invention, which is different from the foregoing embodiment in that a plurality of bumps 76 are formed on the surface of the light-emitting surface. The bump 76 is formed by a lithography method, that is, according to a desired character or pattern shape, a dot design is performed, a negative film is produced, and then the negative film is printed on the surface of the light-emitting surface, and finally baked or irradiated with ultraviolet rays to form a convex shape. Point 76. The action is the same as that of the pit 56 of the previous embodiment. The bump 76 breaks the original smooth plane without total reflection, so that when the light contacts the light exit surface having the bump 76, it will wear. Through the light-emitting panel, the bumps 76 constitute different display groups, and each display group has a different composition 096151113 Form No. A0101 Page 8 / Total 18 Page 1003480441-0 1364730 > » 100 years. December 26th revision _^ The character, character combination or pattern of the page constitutes the dye of the same color on the bump 76 of the same display group, and the dyes 76 of different display groups are coated with dyes of different colors to switch on the same light panel. The color of the light source shows the richness of the information. The color dye is applied to the surface of the bump 76 or to the interior of the bump 76. Other structural forms of this embodiment are the same as those of the foregoing embodiment.

[0019] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0020] FIG. 1 is a cross-sectional view of a conventional light-emitting panel. 2 is a top plan view of the light emitting panel of FIG. 1. 3 is an enlarged schematic view of a portion III of FIG. 2.

4 is a schematic diagram of the principle of total reflection of a triangular prism. 5 is a top plan view of a light emitting panel according to a preferred embodiment of the present invention. 6 is a schematic cross-sectional view taken along line VI-VI of FIG. 5. 7 is a cross-sectional view of a light-emitting panel according to still another preferred embodiment of the present invention. [0027] FIG. 8 is a cross-sectional view of a light-emitting panel according to still another preferred embodiment of the present invention. [Main component symbol description] 096151113 No. A0101 Page 9/18 pages 1003480441-0 1364730 [0028] Light-emitting panel: 10 [0029] Light source: 11, 101, 102 [0030] Defect: 107, 108 [0031] Plate: 12 [0032] Character : 127, 128 [0033] Light-emitting surface: 13 [0034] Bottom surface: 14 [0035] Side: 151 [0036] Triangle prism: 207 [0037] Bottom surface: 2071 [0038] Left side: 2072 [0039] Right side: 2073 Front side: 2 0 7 4 [0041] Rear side: 2075 [0042] Direction: a, a, b, b, [0043] Light-emitting panel: 5 0 [0044] Light source: 51, 511, 512 [ 0045] Plate: 52 [0046] Light-emitting surface: 53 096151113 Form No. A0101 Page 10 / Total 18 pages December 26, 2014 Shuttle replacement page 1003480441-0

100 years. December 26th nuclear replacement page 1364730 [0047] bottom surface: 54 [0048] side: 55 [0049] pits: 56, 561, 562 [0050] reflective layer: 57 [0051] Display group: 58 , 59 [0052] Bump: 76

096151113 Form No. A0101 Page 11 of 18 1003480441-0

Claims (1)

1364730 100. December 26, revised replacement page VII. Patent application scope: 1. A light-emitting panel, comprising: at least one light source for switchingly providing monochromatic light having a first color and having a second color Monochromatic light a plate made of a transparent material, the plate body comprises a light emitting surface and a light incident surface, the light source is disposed opposite to the light incident surface, and the light emitting surface is distributed with a plurality of microstructures, and the plurality of microstructures are coated with dyes of different colors to form a first display group and a second display group, wherein the microstructures of the same display group are coated with dyes of the same color, and the microstructures of different display groups are coated with dyes of different colors, and the light source provides a single color of the first color. The color of the light is the same as the color of the dye applied to the microstructure of the corresponding first display group, and the color of the monochromatic light provided by the light source and the dye applied to the microstructure of the second display group corresponding thereto The colors are the same. 2. The illuminating panel according to claim 1, wherein the coating is The surface of the single microstructure of the dye is completely coated or partially coated with the dye. 3. The illuminating panel of claim 1, wherein the dye color of each display group is red, light, yellow, green, ochre, blue or purple. The illuminating panel of claim 1, wherein the microstructure is a pit, a bump, or a combination of a pit and a bump. The illuminating panel according to claim 1, wherein the microstructure is one of a cone, a triangular pyramid, a quadrangular pyramid, a regular tetrahedron, a cube, and a hemisphere. The illuminating panel according to claim 1, wherein the material of the plate is polymethyl methacrylate, polycarbonate, resin material, glass 096151113, Form No. A0101, Page 12 of 18, 1003480441- 0 1364730 'One of organic enamel and epoxy resin. The illuminating panel of claim 1, wherein the light source comprises a plurality of different monochromatic light solid state lighting assemblies. The light-emitting panel of claim 7, wherein the monochromatic solid-state light-emitting component is one of red, orange, yellow, green, neon, blue, and violet light-emitting diodes. The illuminating panel of claim 1, wherein the illuminating surface is opposite to the illuminating surface. 9. The illuminating panel of claim 1, wherein the illuminating surface is adjacent to the illuminating light φ. The luminescent panel according to claim 1, wherein the dye is a light-transmitting dye. %6151113 Table·Single number A0101 Page 13 of 18 100348044