TWI306175B - - Google Patents

Description

1306175 V. INSTRUCTION DESCRIPTION (1) Technical Field to Which the Invention 曰 This is a backlight module, and more particularly to a backlight module applied to a liquid crystal display panel. The backlight module of the prior art is a key component of the liquid crystal display (Y LCD) panel. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply a light source with sufficient brightness and distribution, and the panel can The image is displayed normally. Since LCD panels have been widely used in many electronic products with growth potential, such as monitors, notebook computers, digital cameras, personal digital assistants, projectors, etc., the demand for backlight modules and related components naturally continues to grow. . ^ Please refer to the first figure, which is a schematic diagram of a conventional backlight module. The backlight module is mainly assembled by a light source 1 〇, a light guide plate u, a reflection plate 12, a diffusion plate 13 : a cymbal 14 and an outer frame. The light source 1〇 must have high brightness and long life. The current light source includes cold cathode fluorescent lamp (c〇ld Cathode Flu〇rescent Ump, CCFL) and hot cathode fluorescent lamp, light emitting diode (LED), electricity. Excitation light sheet (EL), etc., in which "several is the main. The role of the light guide plate 11 is to guide the scattering direction of light, to improve the degree" and to ensure the uniformity of the brightness of the panel. The light guide plate u is utilized, ^ method The propylene is pressed into a smooth surface plate, and then the material: 冋3 and the material that does not absorb light is printed on the bottom surface of the light guide plate 11: according to the diffusion point, the reflected light will diffuse at various angles, and then the reflection condition is destroyed by the light guide plate. Frontal injection 'utilizes various kinds of density, size is not

1306175 V. Description of the invention (2) A diffusion point that exposes the bottom surface with efficiency. As for the expansion of the light from the front, the direction of the light, in the general direction of the "side light". Straight-down design and other backlight modules See the obvious light. This phenomenon is usually done with a smaller and brighter backlighting and thickness. The post is the reason and research, and: the wedge group. The light-reflecting plate 13 can be made to reflect the non-light effect. The backlight design method will set the light source of the light source to be separated from the light-guide group, but the shadow of the light-emitting plate 11 is often poor. If the module is installed, the current lamp set is different, and the design of the plate is thickened. In the light panel 11, it is to let light. However, since the light must use the position of the bright light source on the front side of the prism, the large-sized panel can be used in a large number of modules, so that the dot-forming point is designed to a certain thickness to prevent the light, and at the same time, the light-increasing plate 12 is used to enhance the light distribution. Self-diffusing plate 13 lens 14 to repair. It is divided into "straight down and mostly use straight down, but it is troubled by the panel. 'It will be too close to the tube, and the use of the backlight is used to make the positive light, and the lower type is set to the light." The tube is easy to avoid the light source caused by the re-invention of the optical module 'which can evenly disperse the lamp. The weight and thickness of the other group of the invention:::: two sets of groups can reduce the obvious backlight mode The system provides a backlight mode that meets the trend of light-binding of the current LCD panel

Page 5 1306175 V. Description of the Invention (3) ------ In order to achieve the above object, the present invention provides a backlight module, which is used to provide light, and a light guide plate set. Located on the sides of the hair body to guide the scattering direction of the light; the semi-permeable film is located above the light body and has a plurality of holes; and a reflector is located on the light guide plate In the lower part, the light can be reflected back to the light guide plate to improve the use efficiency of the light. The light can be led upward through the hole of the semipermeable membrane, and the semipermeable membrane and the reflection can also be used. Counter

The shot is then directed upward through the light guide. According to the above concept, wherein the illuminating system comprises at least one tube. According to the above concept, wherein the light guide plate assembly comprises two light guide plates. According to the above concept, wherein the light guide plate is a wedge plate. According to the above concept, wherein the thick side end of the wedge plate is close to the illuminant. According to the above concept, the semipermeable membrane is curved. According to the above concept, the backlight module further includes a diffusion plate disposed above the light guide plate group and the semipermeable film for making the light distribution more uniform.

According to the above concept, the backlight module further comprises a cymbal plate located above the § scatter plate for correcting the direction of the light to achieve the effect of concentrating light. Another aspect of the present invention provides a backlight module that includes an illuminant for providing light, and a light guide plate disposed on both sides of the illuminator to guide the scattering direction of the light; a membrane positioned above the illuminant and having a plurality of perforations; and a diffuser plate

Page 6 1306175 V. Invention Description (4) Add uniformity to the light guide plate, which can also be borrowed from the base according to the above. According to the above, the light is raised according to the light guide plate according to the result of the diffusion plate. The present invention is used for the side view of the illuminant through the semi-permeable membrane and then through the guide according to the above-mentioned group according to the above-mentioned group and the middle of the membrane. Below the concept of use, the above-mentioned light-shielding plate is provided above the light-shielding guide. The light-transmissive plate above the semi-permeable membrane is conceived for the purpose of making the light distribution more light through the half. The hole of the membrane is led upwards, and the reflection 'is further directed upward through the light guide plate. Wherein the s-lighting system comprises at least one tube. Wherein the light guide plate set comprises two light guide plates. </ </ RTI> </ RTI> </ RTI> </ RTI> Wherein the thick side end of the wedge plate is adjacent to the illumination&apos; wherein the semipermeable membrane is curved. The backlight module further includes a reflector disposed to reflect the S-light back into the light guide for efficiency. The backlight module further includes a cymbal film, which is located in a direction for correcting the light, and provides a backlight module, which comprises a light-emitting line, and a light-guiding plate group, which is located in the illuminant. The direction of scattering of the two rays; the 卩 and the half of the permeable membrane, the line 'and has a plurality of broken holes' ,, the light can be led upwards, or can be derived by reflection of the semipermeable membrane. Wherein the S-lighting system comprises at least one lamp. Wherein the light guide plate set comprises two light guide plates. Wherein the light guide plate is a wedge plate.

Page 7 1306175 V. DESCRIPTION OF THE INVENTION (5) According to the above concept, the thick side end of the wedge plate is adjacent to the illuminator. According to the above concept, the semipermeable membrane is curved. According to the above concept, the backlight module further includes a reflector disposed below the s-shaped light guide plate, which reflects the light back into the light guide plate to improve the use efficiency of the light. According to the above concept, the backlight module further includes a diffusion plate disposed above the light guide plate group and the semi-permeable film for more uniform distribution of the light. According to the above concept, the backlight module further includes an edge. The lens is located above the diffusing plate to correct the direction of the light to achieve the effect of collecting light. This case can be understood by the following implementations and schemas. Embodiments In order to improve the problem that the lamp in the conventional backlight module is too obvious, the present invention is designed to add half of the film to the backlight module. Please refer to the second figure, which is a schematic view of the semipermeable membrane 20 of the preferred embodiment of the present invention. The semipermeable membrane 2 is disposed above the 4 tubes 21 and has a plurality of holes 2〇1 on the semipermeable membrane 2 to disperse the light source of the tube to prevent the tube from being too conspicuous. The semipermeable membrane 2 has a light-shielding effect. The base material can be selected from general PI and PC. When the light passes through the hole 201 of the semipermeable membrane 20, it can be directly led upward, and when the light passes through the non-broken portion of the semipermeable membrane 20, it will be reflected downward and then led upward through the light guide plate.

Page 8 1306175 V. INSTRUCTION DESCRIPTION (6) — The size, distribution and spacing of the holes 201 in the semipermeable membrane 20 can be optimized with the inclination and scoring design of the light guide plate. In addition, the semipermeable membrane 20 may also be disposed above the bulb 21 in an arc. Please refer to the third figure, which is not intended to be a backlight module structure of the preferred embodiment of the present invention. The backlight module comprises an illuminant 3 〇, a light guide plate set 3 i, a semipermeable membrane 32, a reflector 33, a diffuser 34, a cymbal 35 and an outer frame 36. The illuminator 30 can include at least one tube for providing light. &quot;Heil light guide plate set includes two wedge-shaped light guide plates 31, which are respectively located on both sides of the illuminator 3 ,, wherein the thick side end of the wedge-shaped light guide plate 3 靠近 is close to the illuminant 3 〇, and the illuminant 30 The emitted light can be conducted to the thin side end of the light guide plate 31, and the direction of scattering of the light is further guided by the light guide plate 31. The semipermeable membrane 32 is located above the illuminator 3 , and has a plurality of holes for dispersing the light source of the tube to prevent the tube from being too obvious. The reflector 33 is located below the 忒 light guide plate 31, and reflects the light exposed from the bottom surface back to the light guide plate 31 for improving the efficiency of light use. The diffuser 34 is located above the light guide plate 31 and the semipermeable membrane 32 to make the distribution of the light more uniform. The cymbal sheet 35 is located above the diffuser plate 34 for correcting the direction of the light to achieve the effect of concentrating light. According to the backlight module described above, the light emitted by any one of the illuminators 3 首先 is first emitted in all directions, and when the light is conducted to the light guide plates 3 i on both sides, N· can be diffused through the light guide plate 31. Or the function of the reflection point, the light is guided upward to the LCD panel 37, and the light reflected by the reflection plate 33 is reflected back into the light guide plate 31, and further extended upward. When the light emitted by the lamp officer is conducted upward, if the hole is broken through the semipermeable membrane 32,

1306175 is exported, and the film 32 is reflected and used to disperse the lamp upwards. In this case, the wedge plate is lightly backlit. Furthermore, the semi-permeable membrane is obvious, and the present invention is not inferior to the invention. The invention description (7) can be directly upwardly measured by the semi-transmissive plate 3 3, and can be evenly integrated in the middle of the plate. The system can reduce the thinning of the semi-permeable membrane, so that the lamp is too expensive, so apply. The decoration is as follows, then when the light passes through the half down, it is further exported. Therefore, the light source is used to avoid the advantages of the backlight module of the lamp, and the weight and thickness of the group can be added. The design of the hole on the backlight of the case makes the backlight module have a novel and advanced technology. 2, the non-step-through light guide, the semi-permeable membrane 30 tube is too obvious to place the tube in a strong pair of light, in accordance with the purpose of the module in the tube 'dispersible lamp has a better and practical hair When the surrounding area is to protect the broken hole, the board 31 and the opposite hole are provided with a tube light source above the control front of the two wedge-shaped light guiding direction to avoid uniformity. Ming

Page 10 1306175 Brief description of the diagram Simple description of the diagram The first diagram: it is a schematic diagram of the structure of the conventional backlight module. Second: It is a schematic view of a semipermeable membrane of the preferred embodiment of the present invention. The third figure is a schematic structural view of the backlight module of the preferred embodiment of the present invention. Schematic description 1 〇: light source 11: light guide plate 12. reflection plate 13: diffusion plate 14: prism sheet 20: semipermeable membrane 2 0 1 : broken hole 21: tube 30: illuminator 31: light guide plate 32: half Permeable membrane 3 3 : reflector 3 4 · diffuser 3 5 : complex lens 3 6 : outer frame 37 : LCD panel

Claims (1)

1306175 VI. Patent Application No. 1 · A backlight module comprising: an illuminant 'for providing light; a light guide plate 'located on both sides of the illuminator for guiding the scattering direction of the light; a semi-permeable membrane, located above the illuminant, and having a plurality of holes; and a reflector plate is located below the light guide plate, which reflects the light back into the light guide plate to enhance the light The use efficiency, wherein the light may be led upward through the hole of the semipermeable membrane, or may be reflected by the semipermeable membrane and the reflector, and then led upward through the light guide plate. Wherein the light-emitting body of the light guide plate, wherein the light guide plate is included in the wedge plate, wherein the semi-transmissive film further comprises a diffusion for causing the light 2 to include at least one backlight module according to claim 1 Light tube. 3. The backlight module set as described in claim 1 includes two light guide plates. 4. The backlight module described in claim 3 is a molded plate. 5. The thick side end of the backlight module as described in claim 4 of the patent application is adjacent to the illuminant. 6. The backlight module as described in claim 1 is curved. 7. The backlight module board as described in claim 1 is located above the light guide plate group and the semipermeable membrane. The distribution is more uniform. Page 12 VII. Patent Application Scope 8. The backlight module of claim 7, further comprising a cymbal sheet located above the diffusing plate for correcting the direction of the light to achieve concentrating effect. 9. A backlight module, comprising: an illuminator for providing light; a light guide plate set ′ on both sides of the illuminator for guiding a direction of scattering of the light; Located above the illuminant and having a plurality of holes; and a diffuser plate is located above the light guide plate group and the semi-permeable film for more uniform distribution of the light, wherein the light can pass through The hole of the semipermeable membrane is led upwards, and may be reflected by the semipermeable membrane and then led upward through the light guide plate. The backlight module of claim 9, wherein the illumination system comprises at least one lamp. 11. The backlight module of claim 9, wherein the light guide plate assembly comprises two light guide plates. 2. The backlight module of claim 1, wherein the light guide plate is a wedge plate. The backlight module of claim 12, wherein the thick side end of the wedge is adjacent to the illuminator. The backlight module of claim 9, wherein the semipermeable membrane is curved. 1 5. The backlight module described in claim 9 of the patent application further includes an inverse Ϊ 306175 VI: The patent application scope is located below the light guide plate, which reflects the light back into the guide plate to increase the efficiency of use of the light. 6. The backlight module of claim 9, further comprising a prismatic lens disposed above the diffusing plate for correcting the direction of the light to achieve the effect of collecting light. 17. A backlight module, comprising: an illuminator for providing light; a light guide plate disposed on both sides of the illuminator for guiding a direction of scattering of the light; and a semi-permeable film, Located above the illuminant, and having a plurality of holes, ^ where the light can be led upward through the hole of the semipermeable membrane, or can be reflected by the semipermeable membrane, and then exported upward through the light guide plate . 18. The backlight module of claim 17, wherein the illumination system comprises at least one tube. 19. The backlight module of claim 17, wherein the light guide plate assembly comprises two light guide plates. 2 背光 A backlight module as described in claim 19, wherein the light guide plate is a wedge plate. The backlight module of claim 2, wherein the thick side end of the wedge plate is adjacent to the illuminant. &gt; * 22· As illustrated by -ϋ ^ - r ^'s backlight module', the semi-transparent film is also curved in the film system according to the 17th item of the patent research scope. 2 3 · If the backlight module described by the main body is more inclusive, such as Shen Qing patent scope, item 7 item 5 1306175 VI. Patent Application The shot plate is located below the light guide plate, which reflects the light back into the light guide plate to enhance the use efficiency of the light. The backlight module of claim 17, further comprising a diffusion plate disposed above the light guide plate group and the semipermeable membrane for making the distribution of the light line more uniform. 25. The backlight module of claim 17 further comprising a prismatic lens positioned above the diffuser for correcting the direction of the light to achieve a concentrating effect.