TW200529165A - Light-emitting device - Google Patents

Abstract

A light-emitting device includes a light source concentration block and a lamp. The light source concentration block contains a concentration block body and a reflective material. The concentration block body has an arc channel therein and the reflective material is formed on the wall of the arc channel. The lamp is disposed on the light source concentration block by fitting into the arc channel. Part of the lamp tube is covered with the reflective material.

Description

200529165 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a light-emitting device, and more particularly to a light-emitting device that controls a light divergence angle of a lamp tube with a light source concentrated block. [Previous technology] With the rapid progress of liquid crystal display (LCD) manufacturing technology, and its advantages of lightness, thinness, power saving, and no radiation, LCD displays are widely used in personal digital assistants ( personal digital assistant 'PDA', notebook computers, digital cameras, digital video cameras, mobile phones, computer monitors, and LCD TVs. However, since the liquid crystal display panel in the liquid crystal display is a non-self-luminous display panel, it is necessary to use the light provided by the backlight module to generate a display function. Among them, the light of the backlight module comes from a light source provided in the backlight module, such as a fluorescent tube or a light emitting diode. Please refer to Figure 1, which shows a cross-sectional view of a conventional fluorescent tube. In the first figure, the fluorescent tube 100 includes a glass tube 102, a fluorescent layer 104, and a reflective layer 106. The fluorescent layer 104 is coated on the inner wall of the tube body of the glass tube 102. The upper reflective layer 106 is coated on the outer wall of the tube body of the glass tube 102. Among them, the reflective layer 106 has a light exit hole 08 for determining the light divergence angle Θ2 of the fluorescent tube 100. When an electrode voltage (not shown in the first figure) at both ends of the fluorescent tube 100 is applied with a yoke voltage, electrons are emitted from the electrode portion to the center of the tube body of the fluorescent tube, and the electrons Place the mercury with the glass tube 102 (

200529165 V. Description of the invention (2) The stable state returns to a stable state quickly, and the excess energy is released by ultraviolet rays with a wavelength of 2 5 3 · 7 nanometers (nm). This ultraviolet light will be absorbed by the camping light layer 104 and converted into visible light. After being reflected by the reflective layer 102, light will be emitted out of the fluorescent tube 100 through the light emitting port 108. In the process of forming the reflective layer 106 on the outer wall of the glass tube 102, a coating of a reflective material is usually applied to the outer wall of the glass tube 102's body, and then the surface corresponding to the light exit port 108 is scraped off. Part of the reflective material to form a reflective layer 106. However, it is difficult for such a design to control the size of the light exit port 108, resulting in that the light divergence angle? 2 is not an angle as expected. In addition, in the process of scraping off part of the reflective material, the fluorescent tube 100 is easily scratched, which shortens the life of the fluorescent tube 100. In addition, because the reflective layer 106 has limited adhesion to the outer wall of the glass tube 02 tube, the reflective layer 106 is easily peeled off when subjected to external forces, and the light divergence angle of the fluorescent tube ιο cannot be maintained fixed. [Summary of the Invention] In view of this, the object of the present invention is to provide a light-emitting device, which is designed to carry a lamp tube with a light source concentrated block having a reflective layer, which can prevent the reflective layer from falling off due to external forces, and accurately control the lamp tube. Divergence angle of light. According to the purpose of the present invention, a light-emitting device is provided, which includes a light source concentrated block and a lamp tube. The light source concentrated block includes a concentrated block body and a reflective material. The concentration block body has an arc-shaped groove, and the reflective material is formed on the groove wall of the arc-shaped groove. The lamp tube is designed to fit into the arc groove.

200529165 V. Description of the invention (3) '" ~ — It is placed on the light source concentrated block, part of the tube body is covered by reflective material. According to another object of the present invention, a backlight module is provided, which includes a frame and a light emitting device. A receiving groove is formed on the top surface of the frame. The light-emitting device is disposed in the accommodating slot, and the light-emitting device includes a light source concentration block and a lamp officer. The light source concentrated block includes a concentrated block body and a reflective material ', and the reflective material is formed on the groove wall of the arc-shaped groove of the concentrated block body. The lamp tube is arranged on the light source concentrated block in a manner of fitting with the arc-shaped groove, and a part of the lamp tube body is covered with a reflective material. According to another object of the present invention, a backlight module is provided, which includes a frame, a reflection plate, a light guide plate, a reflection cover and a light emitting device. The reflective plate is disposed on the bottom plate of the frame, and the light guide plate is disposed on the reflective plate. The reflecting cover is arranged between the frame side plate and the side of the light guide plate. The reflecting cover has a reflecting cover bottom plate, a reflecting cover side plate and a reflecting cover top plate. The reflector bottom plate, the reflector side plate and the reflector top plate together form a reflector cover groove. The opening of the reflector cover is a light guide plate. One side of the bottom surface of the reflector cover plate is one of the top surface of the light guide plate. Side contact. The light-emitting device is arranged in the groove of the reflecting cover. The light-emitting device includes a light source concentration block and a lamp tube. The light source concentrated block includes a concentrated block body and a reflective material. The concentration block body has an arc-shaped groove, and the opening of the arc-shaped groove is the side of the light guide plate, and the reflective material is formed on the groove wall of the arc-shaped groove. The lamp tube is arranged on the light source concentrated block in a manner of fitting with the arc-shaped groove, and part of the lamp tube body is covered with a reflective material. In order to make the above objects, features, and advantages of the present invention more obvious and easier

™ i375F (友 达) .ptd Page 7 200529165 V. Description of the invention (4) Understand 'A preferred embodiment is given below, and in conjunction with the attached drawings, a detailed description is as follows: [Embodiment] Please refer to the first embodiment FIG. 2 is a cross-sectional view of a backlight module according to the first embodiment of the present invention. In the second figure, the backlight module 2000 includes at least a frame 202, a plurality of light emitting devices 300, and a multilayer optical film 206. A receiving groove 204 is formed on the top surface of the frame 202, and each light-emitting device 200 is arranged in the receiving groove 204 by being adjacent to each other and arranged in parallel. The multilayer optical film 206 is disposed on the top surface of the frame 202 in such a manner as to seal the opening of the accommodation groove 204 and is positioned above these light emitting devices 200. It should be noted that the multilayer optical film 206 is, for example, a combination of a diffusion plate, a prism sheet, and a brightness enhanced film (BEF). Please refer to Fig. 3, which shows a three-dimensional exploded view of the light-emitting device according to Fig. 2. Please refer to FIG. 2 at the same time. In FIG. 3, the light emitting device 300 includes a light source concentrated block 302 and a light tube 310. The light source concentrated block 302 includes a concentrated block body 304 and a reflective material 308, and the top of the concentrated block body 304 The mask has a curved groove 306. The reflective material 308 is formed on the groove wall of the arc-shaped groove 306. The reflective material 306 is, for example, a metal reflective film formed by a plating method, and the material of the reflective material 308 is a metal or a metal alloy such as silver, aluminum, and copper. The lamp tube 31 0 is arranged on the light source concentration block 302 in a manner of fitting with the arc-shaped groove 3 06, and a part of the lamp tube 310 is covered with a reflective material 308. The lamp tube 310 is, for example, a cold cathode tube (cold).

WB75F (友 达) _ptd Page 8 200529165 V. Description of the invention (5) cathode fluorescent lamp (CCFL) 〇— Generally, the curvature of the groove wall of the arc groove 306 corresponds to the curvature of the tube body of the lamp 310, The light source concentrated block 302 can support the lamp tube 310, and the reflective material 308 can cover a part of the tube body of the lamp tube 310. Since the tube body of part of the lamp tube 310 is covered by the reflective material 308, the tube body of the other part of the lamp tube which is not covered by the reflective material 308 forms a light emitting port 312, and the light emitting port 312 faces the second The multilayer optical film 206. Finely reflected by the reflective material 308, the light from the lamp tube 310 exits the light tube 310 from the light exit port 312, and is directed toward the multilayer optical film 206 in FIG. 2. In other cases, the size D of the light exit opening 312 is determined by the height Η of the concentrated block body 304. When the height Η of the focusing block body 304 is higher, the size D of the light exit opening 312 will be smaller, and the light divergence angle Z of the lamp tube 3 10 will be reduced accordingly. Therefore, by controlling the height Η of the concentrated block body 304, the corresponding size D of the light radiation exit 312 can be obtained. Embodiment 2 Please refer to FIG. 4, which is a cross-sectional view of a light source concentration block according to the present invention. In FIG. 4, the light source concentrated block 302a includes a first concentrated block body 3 041, a second concentrated block body 3042, a first reflective material 3 081, and a second reflective material 3082. The first central block body 3041 has a first joint surface 3043 and a first concave surface 3045 connected to each other, and the second central block body 3042 has a second joint surface 3044 and a second concave surface 3046 connected to each other. First

TW1375F (Youda) .ptd Page 9 200529165 V. Description of the invention (6) A reflective material 3081 and a second reflective material 30 82 are formed on the first concave surface 3 04 5 and the second concave surface 3 046, respectively. When the first joint surface 30 43 is connected to the first joint surface 3044, the first concentration block body 3041 and the second concentration block body 3042 constitute the concentration block body 304 of FIG. 3, and the first concave surface 3045 and the second concave surface 3046 are formed. The groove wall of the arc-shaped groove 306 in FIG. 3, and the first reflective material 3 081 and the second reflective material 3082 are formed in the reflective material 308 in FIG. 3. It can be known from this that the light source concentrated block of the present invention may be composed of a plurality of separated concentrated block bodies and a plurality of separated reflective materials. Embodiment 3 Please refer to FIG. 5, which is a cross-sectional view of a backlight module according to Embodiment 3 of the present invention. In FIG. 5, the backlight module 500 includes a frame 502, a reflection plate 504, a light guide plate 506, a reflection cover 508, and a light emitting device 600. The frame 502 has a frame bottom plate 5021 and a frame side plate 5022. The reflection plate 504 is disposed on the frame bottom plate 5021, and the light guide plate 506 is disposed on the reflection plate 504. The reflection cover 508 is disposed between the frame side plate 5022 and the side of the light guide plate 506, and the reflection cover 508 has a reflection cover bottom plate 5081, a reflection cover side plate 5082, and a reflection cover top plate 5083, among which the reflection cover side plate 5082 The reflector cover bottom plate 5081 and the reflector cover top plate 5083 are connected. Reflector bottom plate 5081, reflector side plate 5082, and reflector top plate 5083 form a reflector cover groove 5084. The opening surface of the reflector cover 5084 is on the side of the light guide plate 5 06. The bottom surface of the reflector cover top plate 5 083. One side is in contact with the top side of the light guide plate 506.

Top 1375F (Youda) .ptd Page 10 200529165 V. Description of the Invention (7) The light emitting device 600 includes a light source concentration block 602 and a lamp tube 610, and the light emitting device 600 is disposed in the reflector cover groove 5084. The light source concentrated block 602 includes a concentrated block body 604 and a reflective material 608. The top face of the concentrated block body 604 has a curved groove 6 〇6, and the opening of the curved groove 6 0 6 is a light guide plate. Side of 506. The reflective material 608 is formed on the groove wall of the arc-shaped groove 606. The lamp tube 61 0 is arranged on the light source concentration block 602 in a manner of fitting with the arc-shaped groove 606, and part of the lamp tube 61 is covered with a reflective material 608. The light of 0 enters the light guide plate 506 through the side of the light guide plate 506. It should be noted that the structure of the light source concentrated block 602 may also be the same as the structure of the light source concentrated block 302 a of the second embodiment. The light source concentrated block of the layer disclosed in the above embodiment of the present invention is detached by bearing the force of the lamp tube, and the brightness quality of the lamp module is accurately controlled. The luminous light device has a reflective design, which can prevent the reflective layer from being affected by the light divergence angle of the outer tube, and enhances the backlight. As described above, although the present invention has been disclosed in a preferred embodiment as above, It is not intended to limit the present invention. Any person skilled in the art can make various modifications and decorations without departing from the scope of this 'Ming Γ God', so it is accurate. " The scope of protection shall be defined by the scope of the attached patent application as

200529165 Schematic description ------- [Schematic description] Figure 1 shows the cross-section of a traditional fluorescent tube. FIG. 2 is a top view of a backlight module according to the first embodiment of the present invention. Fig. 3 is a three-dimensional exploded view of the light-emitting device of Fig. 2. FIG. 4 is a cross-sectional view of a light source concentrated from a second embodiment of the present invention. Fig. 5 shows a backlight module and a plan view according to the third embodiment of the present invention. … 100: fluorescent tube 102: glass tube 104: fluorescent layer 106: reflective layer 108, 312: light emission port 200, 500: backlight module 202, 502: frame 204: receiving slot 206: Multi-layer optical film 300, 600: Light-emitting devices 302, 302a, 602. Light source concentrated blocks 304, 604: Concentrated block body 3041: First concentrated block body

200529165 Brief description of the drawing 3042 The second concentrated block 3043 The first joint surface 3044 The second joint surface 3045 The first concave surface 3046 The second concave surface 306 ^ 606: curved groove 308 > 608: reflective material 3081: first reflective material 3082: second reflective material 310 ^ 610 • lamp tube 5021: frame bottom plate 5022: frame side plate 504: reflection plate 506: light guide plate 508: reflection cover 5081: reflection cover bottom plate 5082: reflection cover side plate 5083: reflection cover top plate 5084 • • Reflector groove

TW1375F (AUO) .ptd Page 13

Claims (1)

200529165 6. Scope of patent application 1. A light-emitting device includes: a light source concentrated block including: a concentrated block body having an arc-shaped groove; and a reflective material 'formed on the wall of the arc-shaped groove And a lamp tube, the tube body of the lamp tube, which is arranged on the light source concentrated block in a manner of fitting with the arc-shaped groove, is covered with the reflective material. 2. The light-emitting device according to item 1 of the scope of patent application, wherein the concentrated block body comprises: a first concentrated block body having a first joint surface and a first concave surface connected to each other; and a second concentrated block The body has a second joint surface and a second concave surface that are connected to each other. The second joint surface is used to connect with the first joint surface, so that the second concave surface and the first concave surface form a groove of the arc groove. wall. 3. The light-emitting device according to item 2 of the scope of patent application, wherein the reflective material comprises: a first reflective material formed on the first concave surface; and a second reflective material formed on the second concave surface on. 4. The light-emitting device according to item 1 of the scope of patent application, wherein the material of the concentrated block body is acrylic (PMMA) 〇5. The light-emitting device according to item 1 of the scope of patent application, wherein The reflective material is metal. 6. A backlight module, including: 200529165 Sixth, the scope of the patent application is a frame whose top surface is formed with a receiving groove; and a light-emitting device is arranged in the receiving groove. The light-emitting device includes a light source concentrated block, including: a concentrated block body Has an arc-shaped groove; and a reflective material is formed on the groove wall of the arc-shaped groove; and a lamp tube is disposed on the light source concentration block in a manner of fitting with the arc-shaped groove A part of the tube body of the lamp is covered with the reflective material. 7. The backlight module according to item 6 of the scope of patent application, wherein the concentrated block body comprises: a first concentrated block body having a first joint surface and a first concave surface connected to each other; and a second center The block body has a second joint surface and a second concave surface that are connected to each other. The second joint surface is used to connect with the first joint surface, so that the second concave surface and the first concave surface form the arc-shaped groove. Groove wall. 8. The backlight module according to item 7 of the scope of patent application, wherein the reflective material comprises: a first reflective material formed on the first concave surface; and a second reflective material formed on the second Concave. 9. The backlight module according to item 6 of the scope of patent application, wherein the material of the light source concentration block is acrylic. 10. The backlight module according to item 6 of the scope of patent application, wherein TW1375F (AUO) .ptd Page 15 200529165 6. Scope of Patent Application The reflective material is metal. 11. The backlight module according to item 6 of the scope of the patent application, wherein the backlight module further includes a multilayer optical film, and the multilayer optical film is disposed on the frame in a manner to seal the opening of the accommodation slot. On the top surface and above the light emitting device. 12. —A kind of backlight module 'includes: a frame, a frame bottom plate and a frame side plate; a reflection plate provided on the frame bottom plate; a light guide plate provided on the reflection plate; a reflection cover ( The reflector is disposed between the frame side plate and the side of the light guide plate. The reflector has a reflector bottom plate, a reflector side plate and a reflector top plate. The reflector side plate is connected to the reflector bottom plate and the reflector. A reflector cover plate, the reflector cover bottom plate, the reflector cover side plate and the reflector cover plate form a reflector cover groove, the opening of the reflector cover groove faces the light guide plate, and one side of the bottom surface of the reflector cover plate is connected with The 'side contact' of the top surface of the light guide plate and a light emitting device are arranged in the groove of the reflecting cover. The light emitting device includes: a light source concentrated block including: a concentrated block body having an arc-shaped groove , The opening of the arc-shaped groove faces the side of the light guide plate; and a reflective material is formed on the groove wall of the arc-shaped groove; and a lamp tube is fitted with the arc-shaped groove square Provided in the Top 375F (AUO) .ptd Page 16 200529165 VI. Patent application scope. On the light source concentration block, part of the tube body is covered by the reflective material, and the light of the tube enters through the side of the light guide plate. In the light guide. 13. The backlight module according to item 12 of the scope of patent application, wherein the concentrated block body comprises: " a first concentrated block body having a first joint surface and a first concave surface connected to each other; and The second central block body has a second joint surface and a second concave surface connected to each other, and the second joint surface is used to connect with the first joint surface, so that the second concave surface and the first concave surface form the arc. Groove wall. 14. The backlight module according to item 13 of the scope of patent application, wherein the reflective material includes: a first reflective material formed on the first concave surface; and a second reflective material formed on the first Second concave surface. 15. The backlight module according to item 12 of the scope of patent application, wherein the material of the light source concentration block is acrylic. 16. The backlight module according to item 12 of the scope of patent application, wherein the reflective material is metal. TW1375F (AUO) .ptd Page 17