TW591304B - Light emitting module and flat display including the same - Google Patents

Abstract

The present invention provides a light emitting module and flat display including the same. The light emitting module includes: a light guiding plate having four side edges; three light guide sticks arranged on three side edges of the light guiding plate; and two light sources, each being arranged between two adjacent light guide sticks, so that the three light guide sticks can receive light emitted from at least one of the two light sources. The light enters the three light guide sticks, and then enters the light guide plate from the three side edges of the light guide plate. Accordingly, the inventive light emitting module enables light to enter from three faces of the light guide plate for increasing the uniformity of light distribution.

Description

591304 V. Description of the invention (l)-Technical leadership of the office i The present invention relates to a light-emitting module, and more particularly to a light-emitting module capable of uniformly distributing light. Prior Art-FIG. 1 shows a front view of the structure of a conventional light emitting module. The light emitting module includes a light guiding plate (LGP; light guiding plate) i〇〇: a light guiding rod (Ught 叩 heart) is provided on the side 110 above the light guiding plate loo

Pipe; light guide stick) 2 0 0. Two light-emitting diodes "⑽"

'ight emitting di〇de) 40 0 is set on both sides of the light guide rod "ο. The surface of the outside 200 a of the light guide rod 200 is jagged, called V-cut, to reflect light. In addition, a reflection plate (Tef lector sheet) 300 is provided on the outside 200a of the light guide rod 200, which is also used to reflect light. The traveling route of the light is that the light emitted by the LED 400 enters first The light guide rod 200 ′ is reflected by the v-cut 200a of the light guide rod and the reflection plate 300, and the light enters the light guide plate 100 from the side 110 above the light guide plate 100. Since the light is guided only by the light guide 100 Light enters one side of the light plate 100, so the light distribution is uneven.

The meaning of invention is as follows: 'The purpose of the present invention is to provide a light-emitting core group to solve the above problems.' While maintaining the use of two light sources, the light can be incident from one side of the light guide plate to increase the uniformity of light distribution . To achieve the purpose of the present invention, the light emitting module of the present invention includes:

------ V. Description of the invention (2) One light guide, three light guides, two light guide plates at least one of two adjacent guides, three light guide plates of the present invention, one light guide, three light guides, two light guides At least one of the three light guide plates of the optical display board has a light rod, a source, and each side of the light rod is also provided with a plate, with a light rod, a source, and a side piece of each light rod. The panel has four sides arranged between the light source, so that the light enters the guide plane. There are four sides arranged between the light source, so that the light enters the guide, and the guide is arranged on the side. The light guide has one side of the three-ray light panel display; two sides of the board; and a light emitting surface, and each light source is provided with a light guide rod that can receive two light sources and can enter three light guide rods, which then includes a light guide The light has one of the three sides of the three-ray light board, and the light board has three sides of the optical board; the light-emitting surface, and each light source is provided with a light bar that can receive two light sources, can enter three light guide bars, and then be placed on the surface. And Implementation Left "Fig. 2 shows a front view of a light emitting module according to a first preferred embodiment of the present invention. The light emitting module of the present invention includes a light guide plate, three light guide rods 21, 22, and 23, and two light sources 41 and 42. The light guide plate 10 has four sides: left side 11, upper side 1, 2, right side 1, 3, and lower side 丨 4. Three light guide rods 2 1, 2 and 2 3 are respectively arranged on the left side 11, the upper side 1 2 and the right side 1 3 of the light guide plate 10. A light source suitable for the present invention may be a light emitting diode (LED). The light source 41 is arranged on the light guide rod

0773-8941TWF (Nl); P91104; cathywan.ptd p. 6 591304

Between 2, 1 and 22, the light source 42 is disposed between the light guide rods 22 and 23, so that the three V light rods 21, 22, and 23 can receive light from at least one of the two light sources. Specifically, the light guide rod 21 can receive the light emitted by the light source 41, the light guide rod 22 can receive the light emitted by the light sources 41 and 42, and the light guide rod "receives the light emitted by the light source 42. Thus, the light in the After entering the three light guide rods 21 2 2, and 2 3, the three sides of the light guide plate (left side 11, upper side edge 1, 2, and right side 1 3) can enter the light guide plate again. 〇.

The surfaces of the outer sides 21a, 22a, 23a of the light sticks 21, 22, 23 may be jagged, called V-cut, to reflect light. Furthermore, the light emitting module of the present invention may further include three first reflecting plates 3 丨, 32, and 33, which are respectively disposed on the outer sides 21a, 22a, and 23a of the two light guide rods 21, 22, and 23 for reflecting Light. As shown in FIG. 2, 'the light guide plate 10 will be too boney at the portion c near the light sources 4 丨 and 4 2', resulting in a bright angle. In order to avoid the occurrence of bright angles, please refer to FIG. 3 according to the second preferred embodiment of the present invention. A second reflecting plate may be provided on the corner 15 between the light emitting surface 41a of the light source 4 and the light guide plate 10. 50, and a second reflecting plate 50 is provided on a corner 16 between the light emitting surface 42a of the light source 42 and the light guide plate 10. The second reflecting plate 50 can be used to reflect light,

Avoid bright corners in the C portion of the light guide plate 10. The cross section of the second reflecting plate 50 may be L-shaped. However, the arrangement of the second reflection plate 50 may cause a vignette in the c portion. Therefore, referring to FIG. 4, according to the third preferred embodiment of the present invention, a plurality of fine holes 5 2 may be provided on the first reflecting plate 50 to allow light to pass through. Thus, the light guide plate C may be avoided. Vignetting occurs in some areas.

591304 V. Description of the invention (4)-Figure 5 shows a schematic cross-sectional view of a flat display of the present invention. This flat ::: device includes-a light emitting module M and-a display panel? 〇. The light-emitting module m includes the light guide plate 10 described in FIG. 3, three light guide rods 2i, 22, two light sources 41 and 42, three third-reflection plates 31, and an optical sheet ( (PtlCal Sheet) 60. The display panel 70 may be a liquid crystal display panel. In general, the optical sheet may include a diffuser sheet, a prism sheet, or a combination thereof. = The light emitted by the light source is evenly distributed, and the function of the cymbal is to make the light line :: two increase: degree. For example, in FIG. 5, the optical sheet includes a diffusion sheet 61 and two prism sheets on one surface ... To sum up, the present invention has three sides of the light guide plate at w_ In the case of two light sources, a light guide rod is provided between two adjacent light guide rods, so that the light can be uniformly distributed by the light guide first and then. J is the first one. Although the present invention has been disclosed in the preferred embodiment as above, restricting the present invention, anyone familiar with this item can be used as a barge in Asia and Africa. Because of the scope of the patent application scope attached later. Protection of July

B941TWF (Nl); P91104; cathywan.ptd 0773-

591304 Brief Description of Drawings Figure 1 shows the front view of a traditional light emitting module. Fig. 2 shows a front view of a light emitting module according to a first preferred embodiment of the present invention. Fig. 3 shows a front view of a light emitting module according to a second preferred embodiment of the present invention. FIG. 4 is a schematic perspective view of a second reflecting plate in a light emitting module according to a third preferred embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of a flat display according to the present invention. Explanation of the number of the conventional technology ~ 100 0 ~ light guide plate; 11 0 ~ the upper side of the light guide plate 100; 2 0 0 ~ the light guide rod; 2 0 0 a ~ the light guide rod 2 0 0 ; 3 0 0 ~ reflection plate; 4 0 0 ~ LED. The present invention ~ 10 ~ light guide plate; 11 ~ left side of light guide plate 10; 12 ~ side of light guide plate 10 above; 13 ~ right side of light guide plate 10; 1 4 ~ light guide plate 10 Underside

0773-8941TWF (Nl); P91104; cathywan.ptd Page 9 591304 Brief description of the drawing 1 5, 16 ~ corner of the light guide plate 10; 2 1, 2 2, 2 3 ~ light guide rod; 2 la ~ guide Outer side of the light rod 21; 22a ~ outer side of the light guide rod 22; 23a ~ outer side of the light guide rod 23; 31, 32, 33 ~ first reflection plate; 41, 4 2 ~ light source; 50 ~ second reflection plate; 5 2 ~ fine holes; M ~ light emitting module; 60 ~ optical sheet; 6 1 ~ diffusion sheet; 62, 63 ~ 稜鏡 sheet; 7 0 ~ display panel.

0773-8941TWF (Nl); P91104; cathywan.ptd Page 10

Claims (1)

591304 丄 A light emitting module and a light guide plate with four sides; two light guide rods located on the two sides of the light channel, μ ^, μ 'light plate; and two light sources, each light source Having a u, ^ between two adjacent light guide rods, so that ::,. The light emitted by the original, the sigh 2 and the lesser-enters the three light guide rods, and the three sides of the light plate enter the light guide plate. A 2. The light-emitting module according to item 1 of the scope of patent application, wherein the outer surface of the light rod is sawtooth-shaped to reflect light. ^ —3. The light-emitting module according to item 丨 of the scope of patent application, further comprising three first reflecting plates disposed on the outer sides of the three light guide rods, and a light beam. It is used to reflect the light, including between two light plates. Wherein, the light emitting module source as described in item 1 of the scope of patent application is a light emitting diode (LED). 5. The light-emitting module according to item 1 of the scope of the patent application < a reflecting plate ' are each disposed on a light-emitting surface and a corner of each light source to reflect light. 6. The cross section of the two reflection plates of the light-emitting module as described in item 5 of the scope of patent application is L-shaped. 7. The light-emitting module according to item 5 of the scope of patent application, wherein the two reflective plates have a plurality of fine holes for transmitting light. Λ8. The light-emitting module described in item 1 of the scope of patent application, further includes ~ an optical sheet disposed on the surface of the light guide plate 9. A light-emitting module, which includes: 591304 Sixth, the scope of the patent application is a light guide plate with four sides, in which the outer surface of the light guide is shaped like a sawtooth to reflect light; three light guide rods are arranged on the third of the light guide plate. On the two sides, two light-emitting diodes (LEDs), each LED has a light-emitting surface, and the LEDs are arranged between two adjacent light-guiding rods, so that the three light-guiding rods. And each light received by at least one of the two light sources' light can enter the two first light rods, and then enter the light guide plate from the three sides of the light guide plate; three three first reflection plates are arranged in the The outer side of the three light guide rods is used to reflect light; and an optical sheet is disposed on one surface of the light guide plate. I 0 · The light-emitting module according to item 9 of the scope of patent application, further comprising two second reflecting plates, each disposed at a corner between the light-emitting surface of each LED and the light-guiding plate for reflecting light. II. The light-emitting module according to item 10 of the patent application scope, wherein a cross-section of the second reflecting plate is L-shaped. 1 2 · The light-emitting module according to item 10 of the scope of patent application, wherein the second reflecting plate has a plurality of fine holes for transmitting light. 1 3 · A flat display including: a light guide plate having four sides; three light guide rods disposed on three sides of the light guide plate; two light sources, each light source having a light emitting surface And each light source is arranged between two adjacent light guide rods, so that the three light guide rods can receive light emitted by at least one of the two light sources, and the light can enter the three light guide rods, and then be guided by the light guide plate. Enter the light guide on the three sides; 〇773-8941TWF (Nl); P91104; cathywan.ptd Page 12 591304 6. Scope of patent application An optical sheet is disposed on one surface of the light guide plate; and a display panel is disposed on the optical sheet. 14. The flat panel display according to item 13 of the scope of patent application, wherein the outer surface of the light guide rod is sawtooth-shaped to reflect light. 15. The flat panel display as described in item 13 of the scope of patent application, further comprising three first reflecting plates disposed on the outer sides of the three light guide rods for reflecting light. 16. The flat display according to item 13 of the scope of patent application, wherein the light source is a light emitting diode (LED). 1 7. The flat display as described in item 13 of the scope of patent application, further comprising two second reflecting plates, each disposed at a corner between the light emitting surface of each light source and the light guide plate, for reflecting light. 1 8. The flat display according to item 17 of the scope of patent application, wherein the cross section of the second reflecting plate is L-shaped. 19. The flat display according to item 17 of the scope of patent application, wherein the second reflecting plate has a plurality of fine holes for transmitting light. 20. The flat display according to item 13 of the scope of patent application, wherein the display panel is a liquid crystal display panel. 0773-8941TWF (Nl); P91104; cathywan.ptd Page 13