TW594248B - Back module and liquid crystal display - Google Patents

Abstract

A back light module is provided. The back light module includes a light guide plate, a light source, and a frame, wherein the light guide plate has a light incident surface, a light emit surface, and a light diffuse surface, the light source is disposed on the side of the light incident surface, and the frame is for carrying the light guide and the frame, wherein one side of the frame has a draw out hole, and the draw out hole is correspond to one end of the light source.

Description

594248 V. Description of the invention (1) The technical scope of the invention The invention relates to a backlight module (Back Light Module) and a liquid crystal display (Liquid Crystal Display, LCD), and in particular to a backlight module without disassembling the backlight module It can also replace the backlight module and LCD of the light source. Prior art #f In order to cope with modern living modes, the volume of video or image devices is becoming thinner and thinner. Although the traditional cathode ray display (CRT) still has its advantages', due to the structure of the internal electronic cavity, the display has a large volume and a large space, and there are still problems such as radiation damage to the eyes from time to time. Therefore, flat panel displays, such as liquid crystal displays (LCDs), organic light emitting displays (0LEDs), or plasma display panels (PDPs), developed in conjunction with optoelectronics and semiconductor manufacturing technologies have gradually become The mainstream of display products. According to the above, as for the liquid crystal display, it can be divided into reflective liquid crystal display (reflective LCD), transmissive liquid crystal display (tranSmiSSive LCD), and transflective liquid crystal display according to its light source utilization type. Three. Taking a transmissive or transflective liquid crystal display as an example, it is mainly composed of a liquid crystal panel and a backlight module. Among them, the liquid crystal panel is composed of two transparent substrates and one transparent substrate. It is composed of a liquid crystal layer between the substrates, and the backlight module is used to provide a surface light source required by the liquid crystal panel to achieve the display effect of the liquid crystal display. FIG. 1 illustrates a schematic cross-sectional view of a conventional liquid crystal display, and FIG. 2 illustrates a side view of a conventional liquid crystal display. Please also

594248

Referring to FIG. 1 and FIG. 2, the liquid crystal display 100 is mainly composed of a backlight module 110, a liquid crystal panel 120, an optical film 1 40, and a frame 1 300, and the backlight is The module 1 10 is composed of a lower frame 1 1 4, an upper frame 1 1 2, a light guide plate 11 6, a light source 1 1 8, and a reflecting sheet 11 9. The reflection sheet 1 1 9 is disposed on the lower frame 1 1 4, the light guide plate 1 16 is disposed on the reflection sheet 11 9, and the light source 1 1 8 is disposed beside the light incident surface of the light guide plate 1 16. The light source 1 1 8 is, for example, a light-emitting diode array composed of a circuit board and a light-emitting diode provided on the circuit board. The upper frame 1 1 2 is arranged on the lower frame 1 1 4 so that the reflection sheet 11 9, the light guide plate 11 6 and the light source 11 8 are arranged in the upper and lower frames 11 2 and 11 4 to form a backlight module 11. 〇. The LCD panel 1 20 is arranged on the upper frame 1 12 and the frame 1 30 is arranged and fixed on the backlight module 11 0 on the upper frame 11 2 and the frame 1 30 and the backlight The modules 11 〇 together hold and fix the liquid crystal panel 1 2 〇. The optical film 1 40 is disposed between the light guide plate 116 and the liquid crystal panel 120. In the above-mentioned liquid crystal display 100, the assembling order is to provide the lower frame 11 4, the reflection plate 11 9, the light guide plate 11 6, the light source 11 8, and the optical film 1 4 0. 1. The upper frame 112 is provided to form the backlight module 110, and then the liquid crystal panel 120 and the bezel 130 are provided on the backlight module 110 to complete the assembly of the liquid crystal display device 00. However, as shown in FIG. 2, the light source 11 8 is covered by the upper frame 11 2, the lower frame 11 4, and the inlaid frame 130. Therefore, in the liquid crystal display 100 constructed according to the above structure and assembly method, When the light source 118 needs to be replaced, the frame 130, the liquid crystal panel 120, the upper frame 11 2, and the optical film 150 must be removed in order before the light source 118 can be replaced. again

V. Description of the invention (3) According to the replacement of the disassembled 11 18, it is also possible that the end must replace the source of the client product, which also causes other inventions. Therefore, the display and the light source can be changed according to the present invention. Device, which can damage or soil the indicator of the present invention, and can quickly illuminate one side of the light plate, one light surface, and one light exit surface of the present invention.

In the opposite order, install the components, replace the backlight module and the liquid crystal light source, and replace the LCD display parts with the liquid crystal display. Therefore, the light source is combined: two ... in the process of disassembly and assembly, the other components are damaged or defaced. = Crystal display 100 module is composed of products in the customer ===, you must first put the LCD display 100 module not only by the customer; i 丄 = LCD display 10 ° module to replace the light time-consuming, but also in the Detachment or fouling of components during disassembly and assembly. The object of the present invention is to provide a process that can be changed without disassembling the module. Another purpose is to provide a backlight module and avoid the replacement process caused by disassembling the module. Another object is to provide a backlight module level and the light source without removing the LCD display structure from the client product. Replacement. A backlight module is provided. The backlight module is mainly composed of a source and a frame. The light guide plate has two guide surfaces and a light diffusion surface. The light source is arranged at the incidence and the frame is suitable for carrying. Light guide plate and light source, there is an extraction hole on the complex plate, and the extraction hole corresponds to light>, center 594248

5. Description of the invention (4) The device ^ is mainly composed of a light guide plate and a frame. Among them, the light guide plate and a light diffusion surface, the light source system frame is suitable for carrying the light guide plate and the light extraction hole, and the extraction hole is correspondingly placed on the frame, and the liquid crystal panel is used to fix the liquid crystal panel on the frame. The invention proposes a liquid crystal display light source, a frame, a liquid crystal panel, and a light incident surface and a light exit surface placed beside the light incident surface of the light guide plate. The frame source has one end of the frame on the light source. , The LCD panel is located above the light guide plate, and the frame system

Moreover, in the above-mentioned preferred embodiment of the backlight module and the liquid crystal display, an openable and closable cover can be provided on the frame near the extraction hole to close the extraction hole, so as to avoid the exposure of light from the extraction hole. It can also prevent the light source from falling out of the extraction hole. ^ As can be seen from the above, since the backlight module or the liquid crystal display of the present invention is provided with an extraction hole corresponding to the light source on the side, the light source can be directly replaced through the extraction hole without disassembling the module. This simplifies the replacement process of the light source. Moreover, since the backlight module or the liquid crystal display of the present invention can replace the light source without disassembling the module, it is possible to avoid the damage or contamination of the parts caused by the disassembly of the mold during the replacement process. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following exemplifies a preferred embodiment, and in conjunction with the accompanying drawings, a detailed description is as follows: FIG. 3 of the embodiment is shown as Top view of a backlight module according to a preferred embodiment of the present invention. The edge shown in FIG. 4 is a cross-section of the backlight module according to a preferred embodiment of the present invention.

10669twf.ptd Page 9 594248

Figure 4 is a cross-sectional view of Figure 3 along the tangent line. First, the same day guard is referred to FIG. 3 and FIG. 4. The backlight module 200 according to the preferred embodiment of the present invention includes at least a light guide plate 21o, a light source 22o, and a frame 23o. The light guide plate 210 includes a light incident surface 212, a light diffusion surface 214, and a light exit surface 216, and a plurality of V-shaped notches (not shown). The light diffusion surface 214 may further have

9 The light source 220 is arranged beside the light incident surface 212. The light source 220 is, for example, an f light emitting diode array light source. The light source 220 includes a carrier 222 and a plurality of light emitting diodes 224. The carrier 222 is, for example, A printed circuit board, and the light-emitting diode 224 is, for example, a light-emitting diode element with a surface adhesion type, and is arranged on the carrier 2 2 2. The frame 230 is composed of an upper frame 232 and a lower frame 234, and is suitable for carrying the light guide plate 210 and the light source 220. The lower frame 234 of the frame 230 is suitable for supporting the light guide plate 21 and the light source 220, and the upper frame 232 is provided on the lower frame 234, and the upper frame 232 is suitable for being provided with a liquid-day panel. (Not shown) 〇 Then, please refer to FIG. 3 and FIG. 5 at the same time. FIG. 5 shows a side view of the backlight module viewed in the X direction of FIG. 3, and FIG. 3 and FIG. It can be seen that one side of the frame 234 below the frame 230 has an extraction hole 2 3 6 and the extraction hole 2 3 6 corresponds to an end of the light source 2 2 0, that is, the extraction hole 236 is exposed. One end of the light source 220 is configured to extract the light source 22 from the frame (backlight module) 23 by clamping one end of the light source 220. In addition, in the above-mentioned backlight module 2000, a closing cover (not shown) that can be opened and closed can be provided on the lower frame 234 near the extraction hole 236 to draw the

594248 V. Description of the invention (6) Take-out hole 2 3 6 is closed. With this setting of the cover, the light can be prevented from being exposed from the extraction hole 2 3 6 and the light source can be fixed by the cover 2 2 0 'to prevent the light source 2 2 0 from falling out of the extraction hole 2 3 6. In addition, in the above-mentioned backlight module 2000, a reflection plate 2 40 may be further disposed between the light diffusion surface 214 of the light guide plate and the frame 230 (lower frame 2 34) to enhance the light entering and exiting effect. . When the light source 2 200 of the above-mentioned backlight module 200 must be replaced, firstly, the electrical connection point (not shown) of the light source 220 and the backlight module 200 is unsoldered, and then the closing cover is opened. By holding one end of the light source 22 on the side of the extraction hole 236, pull out the light source 220 outward from the backlight module 200 (please refer to FIG. 6) and then push the new light source 220 into the backlight through the extraction hole 236 Within the module 200, the light source 220 and the backlight module 20 are welded to be electrically connected, and the light source 220 can be replaced after the closing cover is closed. Therefore, without disassembling the frame 230, the light source 220 can be quickly replaced to save maintenance time. FIG. 7 is a schematic cross-sectional view of a backlight module according to another preferred embodiment of the present invention. In addition, components in FIG. 7 that are the same as those in FIG. 4 are denoted by the same reference numerals and descriptions thereof are omitted. In FIG. 7, a sliding groove 250 is formed on the frame 2. The sliding groove 250 is disposed on the lower frame 234, and the light source 220 is disposed on the sliding pan 250 through the carrier 222. In order to slide and move along a certain path according to the specification of the chute 250, the backlight module 200 shown in FIG. 7 can not only replace the light source 220 by directly replacing the light source 220, but also When 220 is pulled out or pushed in, ^ is regulated by the chute 250 and the light source 22 slides along a certain path.

594248

Therefore, it is possible to prevent the light source 220 from accidentally hitting the light guide plate 2 and hurting the light guide plate 2 10 during the replacement. '

FIG. 8 is a schematic cross-sectional view of a liquid crystal display according to a preferred embodiment of the present invention, and FIG. 9 is a side view of a liquid crystal display according to a preferred embodiment of the present invention. Please refer to FIG. 8 and FIG. 9 at the same time. The liquid crystal display 300 of the present invention is mainly composed of the backlight module 2 q 0, the liquid crystal panel 3 10, and the frame 3 2 0 described above. The liquid crystal panel 3 is, for example, an active matrix liquid crystal panel generally composed of a thin film transistor array substrate (TFT Array), a color filter substrate, and a liquid crystal layer. The liquid crystal panel 3 1 0 The frame 320 is arranged on the frame 2 30 (that is, the upper frame 232) above the light guide plate 2 10. The frame 320 is fixedly arranged on the frame 2 30. The frame 320 is, for example, the frame 32. The liquid crystal panel 3 1 0 is clamped and fixed together with the frame 23 0, and then the inlay frame 3 2 0 is fixed to the frame 2 3 ′ by screws, for example. In addition, a plurality of optical films 330 may be disposed between the liquid crystal panel 310 and the light guide plate 21o, and these optical films 33o are, for example, a diffusion film, a light enhancement film, and a cymbal. '

As shown in Figure 9, when the LCD display 300 has to be replaced with a light source 22, you only need to take out the light source 2 20 from the extraction hole 2 3 6 and replace it, instead of having to go through the frame 3 as before. 〇, the liquid crystal panel 3 丨 〇, the optical film 3 3 0, the glue frame 2 3 2 and other tedious disassembly sequence, so that the light source 2 2 0 can be replaced. ^ 'Under proper design of the product, the LCD monitor 300 can be assembled into the product, and the LCD monitor 300 can be removed without disassembling the client product. Fast direct light source

594248 V. Replacement of invention description (8). ^ As mentioned above, this embodiment uses the backlight module disclosed in Figures 3 to 5 as an example. Of course, the backlight module disclosed in Figure 7 can also be used to achieve the same purpose. In addition, the backlight module in this embodiment is applicable to an active matrix liquid crystal display (Active Matrix LCD) and a passive matrix liquid crystal display (passive Matrix LCD).

And in the above preferred embodiment, the carrier 2 2 2 of the light source 2 2 0 is a printed circuit board, but the present invention is not limited thereto, and the carrier of the light source of the present invention may also be a flexible printed circuit film. Among them, the diode element is arranged on the flexible printed circuit film, and a carrier is further provided, and the carrier is suitable for carrying the above-mentioned flexible printed circuit film. In addition, the light source using the vehicle described above can be directly arranged in the backlight module as shown in FIGS. 3 to 5, or a slide groove can be provided on the frame as shown in FIG. 7. Enable the light source (especially the carrier) to slide in the chute. Moreover, in the above-mentioned preferred embodiment, the light source is electrically connected to the backlight module by welding. However, the present invention is not limited to this. The present invention / can also provide a pair of The metal connector of the male and female's can save time for soldering and soldering when changing the light source.

Furthermore, in the above-mentioned preferred embodiment, the light source is disposed on one side of the backlight module or the liquid crystal display. However, the present invention is not limited to this. The present invention can also be applied to the backlight module or the liquid crystal display. Light sources are provided on both sides. "To sum up, the backlight module and the liquid crystal display of the present invention are at least

10669twf.ptd Page 13 594248 V. Description of the invention (9) Has the following advantages: 2. Since the backlight module or liquid crystal display light source of the present invention does not need to be disassembled, it can be avoided during the replacement process. Damaged or dirty parts. 1. Since the backlight module of the present invention is provided with an extraction hole corresponding to a light source, the light replacement process can be directly performed through the extraction hole. 3 · After the liquid crystal display of the present invention, when the light source is replaced, the maintenance time can be saved without disassembling it. The liquid crystal display or the liquid crystal display is installed on the side without replacing the module, so the source can be replaced. Therefore, the light source indicator can be simplified. The indicator can be installed on the customer when the module is disassembled. The production of the liquid crystal display module from the client quickly replaces the light source, and although the present invention has been disclosed in a preferred embodiment, such as to limit the time B, k, but it is not used for any month, anyone familiar with this The artist, within the scope of undetermined M + 1 β 1, Α γ, muscles are away from the essence of the present invention, and can be modified and retouched. The Baogan W Tian is subject to the definition of the scope of patent application attached.

594248 Brief description of the drawings Figure 1 shows a conventional LCD monitor. Figure 2 shows a conventional LCD monitor. Figure 3 shows a preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a preferred embodiment of the present invention, and FIG. 4 is a diagram along I-I of FIG. 3. Figure 5 shows the view seen from the X direction in Figure 3. FIG. 6 is a top view showing a hole according to a preferred embodiment of the present invention and taken out from the backlight module. Fig. 7 is a schematic sectional view of another preferred embodiment of the present invention. FIG. 8 is a schematic cross-sectional view of a preferred device according to the present invention. Figure 9 shows a side view of a preferred device according to the present invention. Graphical description: 100 > 30 0: liquid crystal display 110, 200: backlight module 11 2, 2 3 2: upper frame 114, 234: lower frame 116, 210: light guide plate 11, 8, 2 2 0: light source Schematic cross-section. Side view. On the backlight module, the cross-section of the backlight module is shown in a cross-section, and the side of the backlight module is used to extract the light source. Example of the backlight module Example LCD display Example LCD display

10669twf.ptd Page 15 594248 Brief description of the drawings 119 240 Reflective sheet 120 310 LCD panel 130 320 Bezel 140 330 Optical film 212 Light incident surface 214 Light diffusion surface 216 Light exit surface 222 Carrier 224 Light emitting diode 230 frame 236 extraction hole 250 chute X: direction

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Claims (1)

594248 6. Scope of patent application 1. The light emitting surface is 1. A backlight module includes: a light incident surface, a light guide plate having a light diffusion surface, and a light source disposed on the light incident surface of the light guide plate. Next to the frame, the frame is adapted to carry the light guide plate and the light source, wherein one side of the frame has an extraction hole, and the extraction hole corresponds to one end of the light source. 2 · The backlight module according to item 1 of the scope of patent application, wherein the light source is a light emitting diode array light source, and the light emitting diode array light source includes: a carrier; and a plurality of light emitting diodes, Configured on the carrier. Among them, the contract includes the contract. The backlight module carrier described in item 2 of the patent application scope includes a printed circuit board. 4 · The backlight module carrier according to item 2 of the scope of patent application includes a flexible printed circuit film. 5. The backlight module carrier according to item 4 of the scope of patent application, wherein the carrier is suitable for carrying the flexible printed circuit film of the town. 6. The backlight module according to item 2 of the scope of patent application, wherein each of the light-emitting diodes is a light-emitting diode element with a surface-attached 蜇 state. 7. The backlight module according to item 1 of the scope of patent application, wherein a closing cover which is opened and closed is further arranged on the frame near the extraction hole to close the extraction hole. 8 · The backlight module according to item 1 of the scope of patent application, wherein the frame l〇669twf.ptd 594248 6. Scope of patent application The rack has a sliding groove, and the light source is suitable for being assembled on the sliding groove. 9. The backlight module according to item 1 of the patent application scope further includes a reflecting plate, wherein the reflecting plate is disposed between the diffusion surface of the light guide plate and the frame. 1 · · A liquid crystal display comprising:-a light guide plate having a light incident surface, a light exit surface, and a light diffusion surface; a light source disposed next to the light incident surface of the light guide plate; A frame adapted to carry the light guide plate and the light source, wherein an extraction hole is provided on the _ side of the pivot frame, and the extraction hole corresponds to one end of the light source; a liquid crystal panel is disposed on the frame And the liquid crystal panel is located above the light guide plate; and a frame is used to fix the liquid crystal panel to the frame. 11 · The liquid crystal display as described in item 0 of the patent application range, wherein the light source is a light emitting diode array light source, and the light emitting diode array light source includes: a carrier; and a plurality of light emitting diodes, Configured on the carrier. 1 2. The liquid crystal display according to item i 丨 of the scope of patent application, wherein the carrier includes a printed circuit board. 183. The liquid crystal display according to item 丨 丨 in the scope of patent application, wherein the carrier includes a flexible printed circuit film. °, 1 4 · As described in the patent application No. 丨 3, the LCD display, more inclusive 594248 6. The scope of patent application includes a carrier, wherein the carrier is suitable for carrying the flexible printed circuit film. 1 5 · The liquid crystal display device as described in item 11 of Shen Qing's patent scope, wherein each of these light-emitting diodes is a light-emitting diode element with a surface adhesive deformation. 16 · According to the liquid crystal display device described in item 11 of the scope of patent application, an openable and closable cover is arranged on the frame near the extraction hole to close the extraction hole. 17 · The liquid crystal display according to item No. 0 of the patent application scope, wherein the frame has a sliding groove, and the light source is suitable for being assembled on the sliding groove. 18 · The liquid crystal display as described in item 1 of the patent application scope, wherein the frame includes: a lower frame adapted to carry the light guide plate and the light source, and the extraction hole is located on one side of the lower frame; An upper frame is disposed on the lower frame, and the upper frame is adapted to carry the liquid crystal panel. 19 · The liquid crystal display according to Item 10 of the scope of patent application, further comprising a reflecting plate, wherein the reflecting plate is disposed between the diffusion surface of the light guide plate and the frame. 2 0. The liquid crystal display as described in the item No. of the patent application scope, further comprising a plurality of optical films disposed between the light guide plate and the liquid crystal panel. 2 1. The liquid crystal display according to item 10 of the scope of patent application, wherein the optical films include a diffusion sheet, a light enhancement sheet, and a cymbal sheet.