TWI235353B - 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

1235353 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 advancement of liquid crystal display (liqUid cryStal display, LCD) technology, and its advantages such as thinness, power saving and no radiation, etc., it has made LCD displays widely used in personal digital assistants ( personal digital assistant (PDA), notebook computers, digital cameras, digital video cameras, mobile phones, computer screens, 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. Refer to Figure 1, which shows a cross-sectional view of a traditional 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 glass tube 100. On the inner wall of the tube body, the reflective layer 106 is coated on the outer wall of the tube body of the glass tube ι02. Among them, the reflective layer 106 has a light exit port 108 for determining the light divergence angle Θ2 of the fluorescent tube 100. When a voltage is applied to the electrode portions (not shown in Figure i) at both ends of the fluorescent tube 100, electrons are emitted from the electrode portion to the center of the tube body of the fluorescent tube, and the electrons will Collision with mercury (Hg) within the glass tube 102. After mercury is struck by high-voltage accelerated electrons, mercury will

1235353 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 fluorescent 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 exit port 108. In the process of forming the reflective layer 106 on the outer wall of the glass tube 102, 'usually a layer of reflective material is first coated on the outer wall of the glass tube 102', and then the surface corresponding to the light exit port 108 is scraped off. Part of the reflective material 'to form a reflective layer 1q6. However, such a design is difficult to control the size of the light exit opening 108, resulting in the divergence angle 光线 2 of the light not being as expected. In addition, in the process of scrapping off part of the reflective material, the fluorescent tube 100 is easily scratched, which shortens the lifetime of the fluorescent tube 100. In addition, due to the limited adhesion of the reflective layer 106 to the outer wall of the glass tube 102, the reflective layer 106 is easily peeled off when subjected to external forces, and the divergence angle of the guided light cannot be maintained fixed. [Summary of the Invention] In view of this, the reflective layer is subjected to an external force angle with a reflective layer. The purpose of the present invention is to provide a light-emitting device. According to the purpose of the present invention, a light-emitting tube includes a concentrated block and a hair-growing device including a light source reflecting material. Set; the two light source concentration blocks include-the body of the concentration block and-this arc-shaped groove ^ 辟 has an arc-shaped groove, the reflective material is formed on the wall of the trough. ㈣ is designed to fit into the arc groove

1235353 V. Description of the invention (3) The tube body of the lamp tube which is placed on the light source concentrated block is covered with a 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 tube. 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 side of the top surface of the light guide plate. 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

TW1375F (Youda) .ptd Page 7 1235353 V. Description of the Invention (4) The preferred embodiment will be explained in detail in conjunction with the attached drawings. The following examples are as follows: [Embodiment] For the first embodiment, please refer to Section 1. 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, several 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 disposed 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 located 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, whose edge illustration is 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 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 (coid

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1235353 V. Description of the invention (5) cathode fluorescent lamp (CCFL). Generally speaking, the curvature of the groove wall of the arc-shaped groove 3 06 corresponds to the curvature of the tube body of the lamp tube 31, so that the light source concentrated block 302 can support the lamp tube 310, and the reflective material 308 can cover part of the lamp. The body of the 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. By the reflection of the reflective material 308, the light from the lamp tube 310 is emitted from the light emitting port 312 out of the lamp tube 310, and is directed toward the multilayer optical film 206 of FIG. 2. The curvature of the groove wall of the arc groove 306 remains unchanged. 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 concentration block body 3 0 4 is more southward, the size D of the light exit 31 2 will be smaller, and the light divergence angle Z of the lamp 31 0 will be reduced accordingly. Therefore, by controlling the height Η of the concentrated block body 304, the corresponding size D of the light emission opening 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 3041, 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. Page 9 TW1375F (AUO) .ptd 1235353 V. Description of the invention (6) A reflective material 3081 and a second reflective material 3082 are formed on the first concave surface 30 45 and the second concave surface 30 46, respectively. When the first joint surface 30 43 is connected to the first joint surface 3 044, the first concentration block body 3041 and the second concentration block body 3042 constitute the concentration block body 3 04 in FIG. 3, and the first concave surface 3045 and the second concave surface. 3046 forms a groove wall of the arc-shaped groove 306 in FIG. 3, and the first reflective material 3081 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 sides of the light guide plate 506, and the reflection cover 508 has a reflection cover bottom plate 5081, a reflection cover side plate 5 0 8 2 and a reflection cover top plate 5 0 83, of which the reflection cover side plate 5 0 2 is connected to the reflector bottom plate 5081 and the reflector top plate 5083. The reflector bottom plate 5081, the reflector side plate 5082, and the reflector top plate 5083 form a reflector cover groove 50 84, the opening surface of the reflector cover groove 50 84 is on the side of the light guide plate 5 0 6 and the bottom surface of the reflector cover plate 5 0 8 3 One side is in contact with one side of the top surface of the light guide plate 506.

TW1375F (Youda) .ptd Page 10 1235353 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 an arc-shaped groove 606, and the opening of the arc-shaped groove 606 is on the side of the light guide plate 506. The reflective material 608 is formed on the groove wall of the fox-shaped groove 606. The lamp tube 6 1 0 is arranged on the light source concentrated block 602 in a manner of fitting with the arc-shaped groove 6 06, and part of the lamp tube 610 is covered with a reflective material 608, and the lamp tube 61 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 can also be the same as the structure of the light source concentrated block 302a of the second embodiment. The design of the light-emitting device disclosed in the above embodiments of the present invention uses a light source concentrated block with a reflecting layer to carry the lamp tube, which can prevent the reflecting layer from falling off due to external forces, and accurately control the light divergence angle of the lamp tube. Many brightness qualities. In summary, although the present invention has been disclosed as the preferred embodiment, it is not intended to limit the present invention. Anyone skilled in this art can make various modifications and retouches within the spirit and scope of 2 Ming. ： ^ I The scope of protection of Ming should be defined as the scope of the attached patent application as page TO375F (Youda) .ptd 1235353

Brief description of the drawings [Simplified description of the drawings] Figure 1 shows the traditional fluorescent lamp and J taj diagram. FIG. 2 is a diagram showing the first embodiment according to the present invention. The cross section of J Zhixian module, i Figure 3 shows a three-dimensional exploded view of the glowing Pei Zhi in Figure 2. Fig. 4 is a sectional view of a light source concentrating block according to a second embodiment of the present invention. FIG. 5 is a cross-sectional view of a backlight module according to a third embodiment of the present invention. Description of the drawings: 1 0 0 Fluorescent tube 102: Glass tube 104: Fluorescent layer 106: Reflective layer 08, 31 2: Light emission ports 200, 500Backlight modules 202, 502: Frame 204: Capacity Slot 206: multilayer optical film 300, 600: light emitting devices 302, 302a, 602: light source concentration block 304, 604: concentration block body 3041: first concentration block body

TW1375F (Youda) .ptd Page 12 1235353 Brief description of the drawing 3042: The second concentrating block body 3043: The first joint surface 3044 The second joint surface 3045 The first concave surface 3046 The second concave surface 30 6,606: Arc grooves 308, 608: Reflective material 3081: First reflective material 3082. Second reflective material 31 0, 61 0. Lamp tube 5021: Frame bottom plate 5 0 2 2: Frame side plate 504: Reflective plate 506. Light guide plate 508: reflector cover 5081: reflector cover base 5082: reflector cover side plate 5083: reflector cover top plate 5084: reflector cover groove

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Claims (1)

1235353 VI. Scope of patent application 1 · A light emitting device, including: a light source concentrated block, including: a body also having an arc-shaped groove; and a reverse material formed in the arc-shaped groove On the wall of the groove; the lamp body of the lamp tube, which is arranged on the light source ^ block in a fitting manner with the arc-shaped groove, is covered with the reflective material. The staircase ^ π is the light-emitting device as described in item 1 of the scope of patent application, wherein the set includes a first main body with a first joint surface and a concave surface connected to each other; and the second :! The second block: the block body has a-second joint surface and-the flute-which are connected to the first joint surface, so that ox has a concave surface, and the first concave surface forms the arc-shaped groove. wall. The light emitting device includes the light-emitting device described in item 2 of the patent scope of Shen 4, wherein the inverse 2_reflection material 'is formed on the -concave surface 4; the Shen 2 material is formed in the second concave surface The light-emitting device described in item 1 of the range of Benben Zheli's, wherein the material of the 1 block body is stamped PMMA). Brother 77 [P〇1ymethy lmethacry 1 ic, 5 · If the patent application potential is π, the radiation material is metal. Consume the light-emitting device according to item 1, wherein the backlight 6.-a backlight module, including: and TO375F (友 达) .ptd Page 14 1235353 6. The scope of the patent application is a frame whose top surface is formed with an accommodation groove; and a light-emitting device is provided in the accommodation groove. The light-emitting device includes: a light source concentrated block including: a concentrated block body having An solitary groove; and f reflecting material 'is formed on the groove wall of the arc groove; and a lamp tube' is arranged on the light source concentrated block in a manner of fitting with the arc groove, partly The tube body of the lamp tube 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 1235353 6. Scope of Patent Application The reflective material is metal. π · The backlight module according to item 6 of the scope of patent application, wherein the backlight module further includes a multilayer optical film, and the multilayer optical film is arranged on the frame in a manner to seal the opening of the valley groove. On the top surface and above the light emitting device. 12 · A backlight module comprising: 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 ( reflector) is disposed between the frame side plate and the side of the light guide plate. The reflection cover has a reflection cover bottom plate, a reflection cover side plate and a reflection cover top plate. The reflection cover side plate is connected to the reflection cover bottom plate and the reflection. A cover top plate, the bottom plate of the reflection cover, the side plate of the reflection cover and the top plate of the reflection cover form a reflection cover groove, and the opening system surface of the reflection cover groove ^ faces the light guide plate to the side of the bottom surface of the reflection cover top plate Is in contact with one side of the top surface of the light guide plate; and a light emitting device is disposed in the groove of the reflecting cover, the light emitting device includes: < light source concentrated block, comprising: a concentrated block body, which has an arc shape A groove, the opening of the arc-shaped groove is facing 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 embedded with the arc-shaped groove Together Set in the style TO375F (Youda) .ptd Page 16 1235353 6. Scope of patent application On the light source concentrated block, part of the lamp covers ’the light of the lamp passes through the guide. 1 3 · According to the scope of the patent application, the main body of the central block includes: The tube body is inserted into the backlight module described in the light guide plate by the reflective material package on the side of the light plate, wherein the first concave block body has a first concave surface. And a second concave surface of the second concentrated block body, the second joint of the second concave surface and the first 14. If the patent-reflection material includes: a first reflective material, a second reflective material, such as The material of the patent-pending fan light source concentration block is pressed 16. If the patent-pending fan-reflecting material is metal. Having a first joint surface connected to each other, and having a surface for concavely surrounding the thirteenth phase connection, and the second joint surface and a joint surface connected to the first joint forming the arc-shaped recess, so that Slot wall. The optical module, wherein the system is formed in the first concave system to form a twelfth gram force. The backlight module according to item 12 is on the back surface of the second concave item; and on the surface. Optical module, where the Top 1375F (Youda) .ptd Page 17