TW200844563A - Backlight module and liquid crystal display device incorporating the same - Google Patents

Abstract

A backlight module and a liquid crystal display device incorporating the same are provided. A backlight module includes a reflector, at least one light source, a light guide plate, and a position mechanism. The reflector has an opening. The light source is disposed inside the reflector. The light guide plate is disposed near the opening. The light guide plate has a side surface receiving the light emitted from the light source. The position mechanism is disposed between the reflector and the light guide plate.

Description

200844563w2718pa • IX. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a liquid crystal display device using the same, and particularly relates to a method for preventing deformation or damage of a reflector by force deformation The backlight module of the diaphragm and the liquid crystal display device using the same. [Prior Art] Since the liquid crystal display device (LCD Device) has the characteristics of thinness, space saving, low power consumption and low radiation pollution, it has gradually replaced the conventional cathode ray tube (Cathode Ray Tube, The CRT) display device is standard equipment for a new generation of computers. The backlight module in the liquid crystal display device is used to provide a uniform light source to the liquid crystal display panel, thereby presenting a bright and rich picture. Please refer to Figure 1, which is a partial cross-sectional view of a conventional side-lit backlight module. The backlight module 100 includes a first carrier frame 1 , a second carrier frame 104 , a reflector cover 106 , a lamp tube 108 , a light guide plate 11 , a lamp line % 112 , a diffusion plate 114 , an optical film 116 , and a reflection Slice 118. The reflector 106, the light guide plate 110, the tube 108, the tube line 112, the diffusion plate 114, the optical film 116, and the reflection sheet 118 are disposed between the first carrier frame 101 and the second carrier frame 104. The light guide plate 110 is adjacent to the opening disposed in the reflector 106. The lamp tube 108 is disposed in the reflector 106, and the light incident surface 109 of the light guide plate 110 faces the lamp tube 108. The reflection sheet 118 is disposed on the bottom surface 132 of the light guide plate 110, and the diffusion plate 114 is disposed on the top surface 130 of the light guide plate no. The optical film 116 is disposed on the diffusion plate 114, and the lamp

TW2718PA 200844563^ The pipe line 112 is disposed between the recess of the reflector side panel 105 and the first frame side panel 102 of the first carrier frame 101. The reflector 106 reflects the light from the tube 108 to the light incident surface 109 of the light guide plate 110. The reflective sheet 118 is used to reflect the light into the light guide plate 110, and the light guide plate 110 guides the light to the diffuser plate 114 and the optical film 116, and finally the light is emitted to a liquid crystal display panel (not shown). Referring to Fig. 2, there is shown a plan view of the reflector, the light guide plate and the optical film of Fig. 1. The optical film 116 is disposed on the diffuser plate 114 and the optical film 116 is substantially parallel to the reflective cover 106. However, when the reflector 106 is pressed by an external force F, the reflector 106 is deflected and deformed toward the inside of the backlight module 1b, as shown by the broken line in FIG. Further, the J-page 103 of the reflector 106 is further pressed against the diffusion plate 114 and the optical film 116. Since the optical film 116 and the diffusion plate 114 are relatively thin and light, the optical film 116 is easily deformed by the pressing of the top plate 103 of the reflective cover 106, resulting in poor optical performance and even destruction.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a backlight module and a liquid crystal display device using the same. The utility model is provided with a positioning mechanism between the reflector and the light guide plate or the bearing frame and the light guide plate, so as to prevent the reflector from being deformed and pressed to the optical film when the reflector is stressed, thereby preventing the optical film from being affected by the reflector. The pressure is broken and the enemy is broken or damaged. In this way, the present invention can protect the optical die from being knocked or damaged by the pressure of the reflector. 6

200844563 TW2718PA According to the purpose of the present invention, a backlight module includes a reflector, at least one light source, a light guide plate, and a positioning mechanism. The reflector has an opening in which the light source is disposed. The light guide plate is disposed adjacent to the opening. And the light guide plate has a light incident surface for receiving the light from the light source, and the positioning mechanism is disposed between the reflective cover and the light guide plate.

According to another object of the present invention, a liquid crystal display device is provided, comprising a liquid crystal display panel and a 'backlight module. The optical module is used to provide a backlight of the liquid crystal display panel. The backlight module includes a reflector, at least one light source, a light guide plate, and a positioning mechanism. The reflector has an opening, and the light source is disposed in the reflector, and the light guide plate is disposed adjacent to the opening. And the light guide plate has a light incident surface for receiving light from the light source, and the positioning mechanism is disposed between the reflector and the light guide plate. According to still another object of the present invention, a backlight module is provided, comprising a carrier frame, a reflector, a light source, and a certain mechanism. The reflector is disposed on the carrier frame, the light source is disposed in the reflector, and the positioning mechanism is disposed between the carrier frame and the reflector. According to a further object of the present invention, a liquid crystal display device is provided, comprising a liquid crystal display panel and a backlight module. The backlight module is used for providing backlight of the display panel. The backlight module comprises a carrying frame, a reflector, a light source and a positioning mechanism. The reflector is disposed in the carrier frame, the light source is disposed in the reflector, and the positioning mechanism is disposed between the carrier frame and the reflector. The above described objects, features and advantages of the present invention will become more apparent and understood.

200844563rw2?i8PA • [Embodiment] First Embodiment Referring to FIG. 3, a partial cross-sectional view of a calender module according to a first embodiment of the present invention is shown. In FIG. 3, the backlight module 200 includes a first carrier frame 201, a second carrier frame 204, a reflector cover 206, a light source 2〇8, a diffusion plate 214, an optical film 216, a light guide plate 210, and a reflection sheet 218 _ and Positioning mechanism. The reflector 206, the light guide plate 210, the light source 208, the diffusion plate 214, the optical film 216, and the reflection sheet 21δ are disposed between the first carrier frame 201 and the second carrier frame 204. The reflector 206 has an opening 228. The light source 208 is disposed in the reflector 206. The light guide 210 is disposed adjacent to the opening 228. The light guide plate 210 has a light incident surface 209 for receiving light from the light source 208. The reflector 206 reflects the light from the light source 208 to the light incident surface 209 of the light guide plate 210. The light source 208 is, for example, a cold cathode fluorescent lamp (CCFL) or a hot cathode fluorescent lamp (hot cathode fluorescent lamp). , HCFL) or a light emitting diode (LED), and in this embodiment, the light source 208 is a cold cathode fluorescent tube. The reflective sheet 218 is disposed on the bottom surface 232 of the light guide plate 210, and the diffuser plate 214 and the optical film 216 are sequentially disposed on the top surface 230 of the light guide plate 210. The light incident surface 209 is connected to the top surface 230 of the light guide plate 210. And a bottom surface 232 of the light guide plate 210. The positioning mechanism is disposed between the reflector 206 and the light guide plate 210 to prevent the reflector 206 from being deformed and pressed into the optical film 216 when the reflector 206 is stressed, thereby preventing the optical film from being reflected by the optical film 20082163. The cover 206 is smashed and wrinkled or damaged. In this embodiment, the positioning mechanism is a for the first abutting portion 2, and is disposed on the reflector 206, and the end thereof is for abutting against the light incident surface 209 of the light guide plate 210. In order to describe the position of the first abutting portion 202a, the configuration of the reflecting cover 206 will be described in detail below, but the technique of the embodiment is not limited thereto. The reflector cover 206 has a reflector cover top 203, a reflector cover side plate 205 and a reflector cover bottom 207. The reflector cover side plate 205 is perpendicularly connected to the reflector cover top 203 and the reflector cover bottom 207, and the reflector cover top 203 is substantially parallel. At the bottom 207 of the reflector. The first abutting portion 202a is disposed on the top 203 of the reflector. The first abutting portion 202a is integrally formed with the reflecting cover 206, and the first abutting portion 202a is for abutting against the top side 211 of the light incident surface 209. When the reflector 206 is pressed and deformed by an external force, the first abutting portion 202a prevents the reflector cover top 203 from leaning forward against the diffuser plate 214 and the optical film 210, causing the optical film 210 to be squeezed to cause wrinkles. Folded or damaged. Please refer to Figures 3 and 4 at the same time. Figure 4 is a plan view showing the reflector, the light guide plate and the optical film. In the fourth figure, the top plate 203 of the reflector 206 is cut out by an opening 229, and the cut material is bent inside the reflector 206 to form a first abutting portion 2〇2a. The first abutting portion 202a is used. To resist the top side 211 of the light incident surface 209. The first abutment portion 202a is preferably disposed in a central region of the top 203 of the reflector, for example corresponding to a central portion of the light source 208 that is a tube. It may be disposed at other positions on the reflecting cover 2〇6, for example, corresponding to the electrode end of the light source 2〇8 of the lamp or the area adjacent to the electrode end, and the number thereof is not limited. 9

200844563rw27i8PA ^ Second Embodiment Referring to Figure 5, a partial cross-sectional view of a backlight module in accordance with a second embodiment of the present invention is shown. The backlight module 250 of the present embodiment is different from the backlight module 200 of the first embodiment in the design of the positioning mechanism. As for the other constituent elements, the same reference numerals will be used, and the corresponding relationship between them will not be described. As shown in Fig. 5, the positioning mechanism is the second abutting portion 202b and is disposed between the bottom portion 207 of the reflector cover and one of the bottom sides 213 of the light incident surface 209. The second abutting portion 202b is integrally formed with the reflector 206. The abutting portion 202b is for abutting against the bottom side 213 of the light incident surface 209. The bottom plate 207 of the reflector cover 206 is cut out by an opening 231, and the cut material is bent inside the reflection cover 206 to form the second abutting portion 202b. The second abutting portion 2〇2b is used to resist the light entering. The bottom side 213 of the face 209. The second abutting portion 2〇2b is preferably disposed in a central portion of the bottom plate 207 of the reflector 206, for example, corresponding to a central portion of the light source 208 that is a tube. It may be disposed at other locations on the reflector 206, for example, corresponding to the electrode end of the light source 208 of the lamp or adjacent to the electrode end, and the number thereof is not limited. In this way, the second abutting portion 202b can prevent the reflective cover 206 from being deformed and pressed into the optical film 216 when the reflector 206 is stressed, thereby preventing the optical film 216 from being crushed by the reflective cover 2〇6. Fold or damage. THIRD EMBODIMENT Referring to Figure 6, there is shown a partial cross-sectional view of a moonlight module in accordance with a third embodiment of the present invention. The backlight module 3 of the present embodiment is different from the backlight module 200 of the first embodiment of the first embodiment of the present invention. The design of the positioning mechanism is continued, and other identical constituent elements continue to be labeled. A brief description of their correspondence with each other. As shown in Fig. 6, the positioning mechanism includes a second abutting portion 202a and a second abutting portion 202b. The brother-offer portion 202a is disposed between the top 203 of the reflector and the top side 211 of the light-incident surface 209. The second abutting portion 202b is disposed between the reflector bottom 207 and one of the bottom surfaces 213 of the light incident surface 209 for respectively abutting against the top side 211 and the bottom side 213 of the light incident surface 209. The first abutting portion 202a and the second abutting portion 202b are integrally formed with the reflective cover 206. When the reflective cover 206 is deformed by an external force, the first abutting portion 202a and the second abutting portion 202b prevent the reflective cover 206 from leaning forward against the diffusing plate 214 and the optical film 210, thereby causing the optical film 210 to be formed. Squeezed to cause wrinkles or damage. Fourth Embodiment Referring to Figure 7, there is shown a partial cross-sectional view of a backlight module in accordance with a fourth embodiment of the present invention. The backlight module 35 of the present embodiment is different from the backlight module 200 of the first embodiment in that the positioning mechanism is designed. As for the other constituent elements, the reference numerals are continued, and the description is omitted. Correspondence. As shown in Fig. 7, the reflecting cover 2〇6 is placed on the >-bearing frame 2G1, and the reflecting cover has a reflecting cover bottom 207. The carrying frame 201 has a first frame bottom plate 221. The positioning mechanism is a first frame recess 222 disposed on the first frame bottom plate 221, and the second recessed portion 222 is integrally formed with the first carrier frame 2〇1, and the first frame recess 222 is formed. It is used to abut against the end of the bottom of the reflector, and the distance between the first frame recess 222 and the end of the bottom 207 of the reflector is preferably 〇3 mm. When the reflector 206 is deformed by an external force, the first frame recess 222 prevents the reflector 206 from leaning forward against the diffuser plate 214 and the optical blade 21, causing the optical film 21 to be squeezed. Wrinkled or damaged. [Fifth Embodiment] Referring to Figure 8, there is shown a partial cross-sectional view of a backlight module in accordance with a fifth embodiment of the present invention. The backlight module 4〇〇 of the present embodiment is different from the back money group 35G of the fourth embodiment in that the branch mechanism is designed in such a manner that the same constituent elements continue to use the reference numerals and no longer cite the mutual Correspondence _. As shown in Fig. 8, the positioning mechanism includes a first frame opening portion 226 and a reflection cover boss portion 224. The first frame opening portion is disposed on the first frame bottom plate, and the reflector cover portion is similar to the reflector bottom portion 2G7. That is to say, the reflector cover 2 〇 6 of the cover bulge portion 224 is an i# 忐 έ έ 操 226 226 will be used for (10) M h body formation. The first frame opening portion 226 is for engaging the reflector protrusion portion η4. When the reflector is subjected to the deformation of the reflector, the positioning structure formed by the reflector cover portion 224 and the opening of the first frame is prevented from moving forward against the diffusion plate 214 and the optical The diaphragm 21() causes the optical diaphragm to be squeezed to cause wrinkles or damage. Sixth Embodiment For example, please refer to FIG. 9, which is a sixth embodiment of the present invention. 12 200844563^7^ A partial cross-sectional view of a backlight module. The backlight module 450 of the present embodiment is different from the backlight module 400 of the fifth embodiment in the design of the positioning mechanism. As for the other constituent elements, the same reference numerals will be used, and the corresponding relationship between them will not be described. As shown in Fig. 8, the positioning mechanism includes a first frame recess 222 and a reflector opening 225. The first frame recessed portion 222 is disposed on the first frame bottom plate 221, that is, the first carrier frame 201 and the first frame recessed portion 222 are integrally formed. The reflector opening 225 is disposed on the reflector bottom 207, and the % first frame recess 222 is adapted to be engaged with the reflector opening 225. When the reflector cover 206 is deformed by an external force, the positioning structure formed by the first frame recessed portion 222 and the reflector cover opening portion 225 can prevent the reflector cover 206 from leaning forward against the diffusion plate 214 and the optical film. 210, causing the optical film 210 to be squeezed to cause wrinkles or damage. Seventh Embodiment Referring to Figure 10, a partial cross-sectional view of a liquid crystal display device is shown. The liquid crystal display device 500 includes an outer frame 505, a backlight module 200, a first polarizing plate 242a, a second polarizing plate 242b, and a liquid crystal display panel 240. The first polarizing plate 242a, the second polarizing plate 242b, and the liquid crystal display panel 240 are disposed on the backlight module 200. The liquid crystal display panel 240 is disposed between the first polarizing plate 242a and the second polarizing plate 242b. The second polarizing plate 242b is closer to the optical film 216 than the first polarizing plate 242a, and the light transmitting axis directions of the first polarizing plate 242a and the second polarizing plate 242b are perpendicular to each other. The outer frame 505 and the second carrier frame 204 are vertically sandwiched between the first polarizing plate 242a and the second polarized light 13

The first polarizing plate 242a, the second polarizing plate 242b, and the liquid crystal display panel 240 are disposed on the backlight module 200, for example, the board 242b and the liquid crystal display panel 240. The backlight module 200 is used to provide a backlight to the liquid crystal display panel 240, thereby presenting a picture. The backlight module in this embodiment is described by taking the backlight module 200 of the first embodiment as an example. However, the technology of the example is not limited thereto, and any of the backlight modules in the above embodiments can be applied to the present invention. An example liquid crystal display device 500. Among them, the above liquid crystal display device can be applied to an electronic device having a display unit such as a television, a computer, a monitor, a mobile phone, and a personal digital assistant. In addition, any one of the first embodiment to the third embodiment can be designed in the backlight module in combination with any one of the fourth embodiment to the sixth embodiment to enhance the reflection of the backlight module. The ability of the cover to resist external forces. The backlight module disclosed in the above embodiments of the present invention has a design of a positioning mechanism disposed between the reflector and the light guide plate or the carrier frame and the light guide plate to prevent the reflector from being deformed and pressed into the diffusion plate when the reflector is stressed. And the optical film, thereby preventing the optical film from being wrinkled or damaged by being pressed by the reflector. In this way, the present invention protects the optical film from being crushed by the reflector to cause entrapment or damage. In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. Any changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 200844563魔71狐_ [Simple diagram of the drawing] Figure 1 shows a partial cross-sectional view of a conventional side-lit backlight module; Figure 2 shows a top view of the reflector, light guide and optical film of Figure 1. FIG. 3 is a partial cross-sectional view of the backlight module according to the first embodiment of the present invention; FIG. 4 is a plan view of the reflector, the light guide plate and the optical film; A partial cross-sectional view of a backlight module according to a second embodiment of the present invention; FIG. 6 is a partial cross-sectional view of a backlight module in accordance with a third embodiment of the present invention; 4 is a partial cross-sectional view of a backlight module according to a fifth embodiment of the present invention; and FIG. 9 is a sixth embodiment of the present invention. A partial cross-sectional view of a backlight module; and FIG. 10 is a partial cross-sectional view showing a liquid crystal display device according to a seventh embodiment of the present invention. 15

200844563W2718PA ” [Main component symbol description] 100, 200, 250, 300, 350, 400, 450: backlight module 500: liquid crystal display device 101, 201: first carrier frame 102: first frame side plate 104, 204: Two carrying frames 103, 203: reflector cover tops 105, 205: reflector side plates, 106, 206: reflector cover 108 • lamp tubes 109, 209: light-incident surface 110, 210: light guide plate 112 • lamp tube line 114 214: diffusing plates 116, 216: optical films 118, 218: reflective sheets 130, 230 · top surfaces 132, 232: bottom surface 202a: first abutting portion 202b: second abutting portion 207: bottom of the reflecting cover 208: light source 211: top side 213: bottom side 200844j 63 price 71 ancestor 221: first frame bottom plate 222: first frame concave portion 224: reflector cover protrusion portion 226: first frame opening portion 225: reflector cover opening portion 228, 229, 231 · · opening 240 · liquid crystal display panel 242a: first polarizing plate _ 242b: second polarizing plate F: external force 17

Claims (1)

200844563^27· • X. Patent application scope: 1. A backlight module comprising: a reflector having an opening; at least one light source disposed in the reflector, a light guide plate disposed adjacent to the opening The light guide plate has a light incident surface for receiving light from the light source, and a positioning mechanism is disposed between the reflective cover and the light guide plate. The backlight module of claim 1, wherein the positioning mechanism is an abutting portion, and the reflecting cover has a reflector bottom portion, and the abutting portion is disposed on the bottom of the reflector. I the abutting portion abuts against the bottom side of the light incident surface. 3. The backlight module of claim 1, wherein the positioning mechanism is an abutting portion, the reflector has a reflector cover top, and the abutting portion is disposed on the top of the reflector, and The abutting portion abuts against the top side of the light incident surface. 4. The backlight module of claim 1, wherein the positioning mechanism comprises a first abutting portion and a second abutting portion, the reflecting cover having a reflector top and a reflector bottom. The first abutting portion is disposed on the top of the reflector, the second abutting portion is disposed on the bottom of the reflector, and the abutting portion abuts against the page side of the light incident surface, the brother An abutment portion is placed against the bottom side of the entry face. 5. The backlight module of claim 1, wherein the light source is a cold cathode fluorescent lamp (CCFL) 〇IS 200844563_8pa • 6 · as claimed in item i In the backlight module, the light source is a light emitting diode (LED). The backlight module of claim 1, further comprising a reflective sheet disposed on a bottom surface of the light guide plate. 8. The backlight module of claim 1, further comprising an optical film disposed on the diffuser. A liquid crystal display device comprising: a liquid crystal display panel; and a backlight module for providing a backlight of the liquid crystal display panel, the backlight module comprising: a reflective cover 'having an opening; at least one light source, The light guide plate is disposed adjacent to the opening, the light guide plate has a light incident surface for receiving light from the light source; and a positioning mechanism is disposed on the reflector Between the light guides. The liquid crystal display device of claim 9, wherein the positioning mechanism is an abutting portion, and the reflecting cover has a bottom portion of the reflecting cover, and the abutting portion is disposed on the bottom of the reflecting cover. And the abutting portion abuts against the bottom side of the light incident surface. The liquid crystal display device of claim 9, wherein the positioning mechanism is an abutting portion, the reflecting cover has a reflecting cover, and the abutting portion is disposed on the top of the reflecting cover. And the abutting portion abuts against the top side of the light incident surface. The liquid crystal display device of claim 9, wherein the positioning mechanism comprises a first abutting portion and a second abutting portion, the reflecting cover having a reflecting cover top and a reflection a first abutting portion is disposed on the top of the reflector, the second abutting portion is disposed on the bottom of the reflector, and the first abutting portion abuts the top side of the light incident surface, The second abutting portion abuts against the bottom side of the light incident surface. 13. The liquid crystal display device of claim 9, wherein the light source is a cold cathode fluorescent lamp. 14. The liquid crystal display device of claim 9, wherein the light source is a light emitting diode. 15. The liquid crystal display device of claim 9, wherein the backlight module further comprises a reflective sheet disposed on a bottom surface of the light guide plate. 16. The liquid crystal display device of claim 9, wherein the backlight module further comprises an optical film disposed on the light guide plate. _ 17. A backlight module, comprising: a carrier frame; a reflector disposed on the carrier frame; a light source disposed in the reflector; and a positioning mechanism disposed on the carrier frame Between the reflectors. The backlight module of claim 17, wherein the carrier frame has a frame bottom plate, the reflector cover has a reflector cover bottom, and the positioning mechanism is a recessed portion, and the recessed portion is disposed on the Frame 20 200844563 TW2718PA - On the bottom plate, the recess is adapted to abut the end of the bottom of the reflector. 19. The backlight module of claim 17, wherein the carrier frame has a frame bottom plate, the reflector cover has a reflector cover bottom, and the positioning mechanism includes an opening portion and a recess portion, the opening portion The bottom portion is disposed on the bottom of the reflector, and the concave portion is disposed on the bottom plate of the frame, and the opening portion is configured to be engaged with the concave portion. 20. The backlight module of claim 17, wherein the carrier frame has a frame bottom plate, the reflector has a reflector bottom portion, and the positioning mechanism includes an opening portion and a convex portion. The opening is disposed on the bottom plate of the frame, and the protrusion is disposed on the bottom of the reflector, and the opening is configured to be engaged with the protrusion. 21. The backlight module of claim 17, wherein the light source is a cold cathode fluorescent tube. 22. The backlight module of claim 17, wherein the light source is a light emitting diode. 23. The backlight module of claim 17, further comprising a light guide plate disposed adjacent to an opening of the reflector, the light guide plate having a light incident surface for receiving The light of the light source. The backlight module of claim 23, further comprising a reflective sheet disposed on a bottom surface of the light guide plate. 25. The backlight module of claim 23, further comprising an optical film disposed on the light guide plate. 26·---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- a cover is disposed on the carrying frame; a light source is disposed in the reflective cover; and a positioning mechanism is disposed between the carrying frame and the reflective cover. The liquid crystal display device of claim 26, wherein the carrier frame has a frame bottom plate, the reflector cover has a reflective cover bottom, and the positioning mechanism is a concave portion, and the concave portion is disposed on the The frame bottom plate 'and the recessed portion is for abutting against the end of the bottom of the reflector. The liquid crystal display device of claim 26, wherein the carrier frame has a frame bottom plate, and the reflector has an inverted bottom portion, the positioning mechanism includes an opening portion and a concave portion, the vertical system The opening portion of the hood portion is provided in the reflector portion. The opening portion is configured to be fitted to the concave portion. - 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 a frame, a plate, the raised portion-positioned in the opening portion and the opening portion for mutually interacting with the raised portion. The cover portion is 30%, wherein the light source is The liquid crystal display device according to claim 26, wherein the light source is a light-emitting diode, and the light source is a light-emitting diode. The liquid crystal display device of claim 26, wherein the backlight module further comprises a light guide plate disposed adjacent to an opening of the reflector, the light guide plate having a light incident surface for receiving the light source The liquid crystal display device of claim 32, wherein the backlight module further comprises a reflective sheet disposed on a bottom surface of the light guide plate. LCD display according to item 32 Apparatus wherein the backlight module further comprises an optical film, the optical film disposed on the light guide system. 23