CN101963328A - A reflector for shielding light sources of liquid crystal displays - Google Patents

Abstract

The invention discloses a reflecting plate for shielding a light source of a liquid crystal display, comprising: a first reflective sheet attached to an upper surface of a light guide plate of the liquid crystal display; a second reflective sheet attached to the lower surface of the light guide plate of the liquid crystal display; and a joint portion having: a first riding line contacting the first reflection sheet; the shape and size of each opening are the same as the size and size of the corresponding light source; and a second seam line contacting the second reflecting sheet, wherein the reflecting plate is a one-piece flat plate, and the length of the first reflecting sheet is smaller than that of the second reflecting sheet. The reflecting plate for shielding the light source of the liquid crystal display is easily bent into a U shape through the seam-riding part with two seam lines so as to be respectively attached to the upper surface and the lower surface of the light guide plate, further shielding emergent light of the LED light source and avoiding generating LED moire.

Description

A reflector for shielding light sources of liquid crystal displays

technical field

The invention relates to a light source of a liquid crystal display, in particular to a reflection plate structure of a light source of a liquid crystal display.

Background technique

Currently, the light sources of notebook computer monitors all use LED light sources. However, this type of models often causes a series of moiré (mura) when the LED light source emits light. For example, the surface of the frame assembled with the LED light source and the light guide plate (LGP, Light Guide Plate) is deformed, and when it is curled outward, the light source may emerge from the gap between the frame and the light guide plate.

In order to avoid the generation of the above-mentioned LED moiré as much as possible, one solution is to improve the forming accuracy of the frame itself and improve the assembly capacity of the assembly factory. In addition, a white reflective sheet can also be directly attached to the gap between the frame and the light guide plate, so as to block part of the light that the LED light source intends to string out from there. However, attaching a white reflective sheet will bring a lot of inconvenience to the assembly process, and this technical measure also includes the potential risk of infringing other people's patents.

In view of this, how to design a reflector for shielding the light source of the liquid crystal display is a problem to be solved urgently by technical personnel in the industry.

Contents of the invention

Aiming at the above-mentioned technical defects in the use of the liquid crystal display light source in the prior art, the present invention provides a reflector for shielding the liquid crystal display light source.

According to one aspect of the present invention, a reflector for shielding a light source of a liquid crystal display is provided, comprising:

A first reflection sheet, bonded to the upper surface of a light guide plate of the liquid crystal display;

a second reflective sheet attached to the lower surface of the light guide plate of the liquid crystal display; and

A riding seam, having:

A first suture line, in contact with the first reflective sheet;

a plurality of openings, each opening having the same shape and size as the corresponding light source; and

a second bridging thread, in contact with the second reflective sheet,

Wherein, the reflecting plate is a whole flat plate, and the length of the first reflecting plate is smaller than that of the second reflecting plate.

Preferably, the light source of the liquid crystal display is a plurality of LED light sources. Further, the LED light source is inserted through the corresponding opening of the bridging portion, and one end of the LED light source is in contact with the edge of the light guide plate.

Preferably, the reflecting plate is bent into a "U" shape, and the distance between the first bridging line and the second bridging line is equal to the thickness of the light guide plate. In addition, at least one double-sided adhesive tape is adhered to the surface of the light guide plate that fits the bridging portion, and the contact position between the reflective plate and the light guide plate is fixed by the double-sided adhesive tape. According to an embodiment, there are two double-sided adhesive tapes, and they are respectively arranged on two ends of the surface of the light guide plate and the bridging portion. Wherein, the length of the double-sided tape is the distance between the outward side of the opening and the edge of the bridging portion.

Using the reflecting plate for shielding the light source of the liquid crystal display of the present invention, it can be easily bent into a U shape through the bridging portion with two bridging lines, so as to be attached to the upper surface and the lower surface of the light guide plate respectively, Furthermore, the outgoing light of the LED light source is shielded to avoid the generation of LED moiré. In addition, a plurality of openings having the same size as the LED light source are opened in the bridging portion, so that the LED light source can be assembled to a predetermined position through the openings of the reflective plate.

Description of drawings

Readers will have a clearer understanding of various aspects of the present invention after reading the detailed description of the present invention with reference to the accompanying drawings. in,

FIG. 1 shows a schematic diagram of the structural composition of a reflector for shielding a light source of a liquid crystal display according to an embodiment of the present invention.

Detailed ways

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As mentioned above, in the conventional liquid crystal display light source, in order to prevent the LED light source from emitting part of the light from the gap between the frame and the light guide plate, a white reflective sheet is adhered in the gap. However, when the reflective sheet is attached to the upper surface of the light guide plate, it will bring a lot of inconvenience to the assembly process.

For this reason, the present invention designs a reflective plate with a new structure, which will be described in detail below mainly with reference to FIG. 1 . Specifically, FIG. 1 shows a schematic diagram of the structure and composition of a reflector for shielding a light source of a liquid crystal display according to an embodiment of the present invention. Referring to FIG. 1 , the reflective plate of the present invention includes a first reflective sheet 10 , a second reflective sheet 12 and a bridging portion 14 . During assembly, the reflector is bent into a "U" shape, wherein the first reflector 10 is bonded to the upper surface of the light guide plate of the liquid crystal display, and the second reflector 12 is bonded to the lower surface of the light guide plate. For the bridging part 14, there are first bridging line 141, second bridging line 142 and a plurality of openings 143. More specifically, the first bridging line 141 is in contact with the first reflective sheet 10, and the second bridging line 142 is in contact with the second reflective sheet 12, that is to say, the first reflective sheet 10 and the bridging portion 14 are bounded by the first bridging line 141, and the second reflecting sheet 12 and the bridging portion 14 are separated by the second bridging line 142. demarcation.

In addition, the bridging part 14 also has a plurality of openings 143, each opening corresponds to each light source of the liquid crystal display, preferably, these light sources are LED light sources. Moreover, in order to improve the performance of the product, the shape and size of each opening 143 are set to be the same as the size of the corresponding light source. When the reflector is bent, since the first reflector 10 and the second reflector 12 are attached to the respective surfaces of the light guide plate, the light source can pass through the opening and contact the side wall of the light guide plate. It should be noted that the reflection plate of the present invention is a whole flat plate, and the length of the first reflection sheet 10 is smaller than the length of the second reflection sheet 12 .

According to one embodiment, in order to make the first reflective sheet 10 bonded to the upper surface of the light guide plate as much as possible, and the second reflective sheet 12 to be bonded to the lower surface of the light guide plate, the first stitching line 141 and the second saddle The distance between the sutures 142 is set to the thickness value of the light guide plate. In addition, in order to strengthen the reliable connection between the bridging part 14 of the reflector and the side wall of the light guide plate (that is, the surface where the light guide plate and the bridging part 14 are bonded), the surface of the light guide plate that is bonded to the bridging part 14 is adhered At least one double-sided adhesive tape (not shown in the figure) is used to fix the contact position of the reflective plate and the light guide plate through the double-sided adhesive tape. Preferably, two double-sided adhesive tapes are provided, and each double-sided adhesive tape is correspondingly disposed at one end of the surface of the light guide plate adjoining the bridging portion 14 . That is to say, when the two double-sided adhesive tapes are disposed on the sidewall of the light guide plate and the reflector is bent into a U shape, the bridging portion 14 is reliably connected to the light guide plate.

Those of ordinary skill in the art should understand that that part of the surface of the side wall of the light guide plate corresponding to the opening 143 of the bridging portion 14 will contact the LED after the LED light source is inserted, that is to say, this part of the surface preferably does not need to be glued with double masking tape. Preferably, the length of the double-sided adhesive tape is between the outward side of the opening 143 (that is, the upper straight line of the upper opening 143 in FIG. 1 ) and the edge of the bridging portion (that is, the upper edge of the reflector in FIG. 1 ). distance.

Using the reflecting plate for shielding the light source of the liquid crystal display of the present invention, it can be easily bent into a U shape through the bridging portion with two bridging lines, so as to be attached to the upper surface and the lower surface of the light guide plate respectively, Furthermore, the outgoing light of the LED light source is shielded to avoid the generation of LED moiré. In addition, a plurality of openings having the same size as the LED light source are opened in the bridging portion, so that the LED light source can be assembled to a predetermined position through the openings of the reflective plate.

Hereinbefore, specific embodiments of the present invention have been described with reference to the accompanying drawings. However, those skilled in the art can understand that without departing from the spirit and scope of the present invention, various changes and substitutions can be made to the specific embodiments of the present invention. These changes and substitutions all fall within the scope defined by the claims of the present invention.

Claims (7)

1. a reflector for shielding liquid crystal display light source, is characterized in that, described reflector comprises: A first reflection sheet, bonded to the upper surface of a light guide plate of the liquid crystal display; a second reflective sheet attached to the lower surface of the light guide plate of the liquid crystal display; and A riding seam, having: a first suture line, in contact with the first reflective sheet; a plurality of openings, each opening having the same shape and size as the corresponding light source; and a second bridging line, in contact with the second reflective sheet, Wherein, the reflective plate is a whole flat plate, and the length of the first reflective sheet is smaller than the length of the second reflective sheet. 2. The reflector for shielding the light source of a liquid crystal display according to claim 1, wherein the light source is a plurality of LED light sources. 3. The reflector for shielding the light source of a liquid crystal display as claimed in claim 2, wherein the LED light source is loaded into the corresponding opening of the bridging part, and one end of the LED light source is connected to the light guide plate edges touch. 4. The reflector for shielding the light source of a liquid crystal display as claimed in claim 1, the reflector is bent into a "U" shape, and the distance between the first stitching line and the second stitching line is equal to The thickness of the light guide plate. 5. The reflector for shielding the light source of a liquid crystal display as claimed in claim 4, wherein the light guide plate is adhered to at least one double-sided adhesive tape on the surface that is attached to the bridging portion, and through the The double-sided adhesive tape is used to fix the contact position of the reflection plate and the light guide plate. 6. The reflector for shielding the light source of a liquid crystal display as claimed in claim 5, wherein the number of the double-sided adhesive tapes is two, and they are arranged respectively on the joints of the light guide plate and the bridging seam. both ends of the surface. 7 . The reflector for shielding the light source of a liquid crystal display according to claim 6 , wherein the length of the double-sided tape is the distance between the outward side of the opening and the edge of the bridging portion.