JP3089930U - Light guide plate structure of liquid crystal display - Google Patents

Abstract

(57) [Summary] [Problem] To provide a light guide plate structure of a liquid crystal display. SOLUTION: A backlight module is mounted behind a liquid crystal display, and the backlight module is composed of an upper diffusion piece, a prism piece, a lower diffusion piece, a light guide plate and a reflection plate which are combined in this order. In the light plate structure, the front or rear of the light guide plate is characterized by having a concave arc surface, which reduces the product weight and simplifies the manufacturing process to increase the production speed,
In addition, the light guide effect of the light guide plate was enhanced to increase the luminance, and good quality could be obtained.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of light guide plate structure of a liquid crystal display, and in particular, a concave arc surface is formed integrally with a light guide plate of a backlight module behind the liquid crystal display, thereby reducing the product weight and reducing the manufacturing process. The introduction of liquid crystal displays that can be simplified to increase production speed, thereby reducing manufacturing costs and increasing market competitiveness, and enhancing the backlight reflection effect to increase brightness and obtain good quality. It relates to a light plate structure.

[0002]

[Prior art]

 Generally, as shown in FIG. 9, the structure of a liquid crystal display is such that a backlight module b is mounted behind a liquid crystal display panel a, and the backlight module b is composed of an upper diffusion piece b1, a prism piece b2, and a lower diffusion piece b3. The light guide plate b4 and the reflection plate b5 are sequentially laminated, and the lamp guide b6 and the lamp tube b7 are attached to the sides of the reflection plate b5, and the light guide of the light guide is printed on the light guide plate b4. The light is reflected by the backlight module b to the liquid crystal display panel a to display a screen.

[0003] A well-known light guide plate b4 for uniformly distributing a light source prints a pattern on a transparent acrylic plate, thereby distributing the light source on average when the light source enters the light guide plate b4, and thus propagating the light beam. Achieve the purpose of spreading. However, the well-known light guide plate b4 cuts an acrylic plate flat plate to a required size, and then prints a pattern on an acrylic plate, which requires a secondary or higher processing process, thereby increasing the manufacturing cost. did. In addition, there are a considerable number of factors causing mutations, such as dust easily adhering during the process and scratching of the light guide plate b4, and the yield was greatly reduced.

[0004] The pattern of the traditional light guide plate b4 is formed by a printing method, and the effect of the light guide plate achieved by this pattern is finite, and the luminous intensity at a portion away from the light source is relatively small. Easily formed and similarly affected the image quality.

[0005]

[Problems to be solved by the invention]

 In view of the above-mentioned disadvantages of the light guide plate b4 of the backlight module b mounted behind the well-known liquid crystal display panel, the present invention provides a kind of liquid crystal display light guide plate structure in order to improve it. According to the present invention, a backlight module is mounted behind a liquid crystal display, and the backlight module is composed of an upper diffusion piece, a prism piece, a lower diffusion piece, a light guide plate, and a reflection plate which are combined in this order, and In a light guide plate structure of a liquid crystal display in which a lamp shade and a lamp tube are attached to a side and a light guide plate has a light guide structure, and a backlight module reflects light rays to a liquid crystal display panel to display a screen. It is characterized in that a front or rear side of the light plate has a concave arc surface. This structure reduces product weight and simplifies the manufacturing process to increase production speed, thereby reducing manufacturing costs and increasing market competitiveness, and increasing the light guide effect of the light guide plate to enhance brightness and improve High quality.

Therefore, a main object of the present invention is to form a concave arcuate surface integrally with the light guide plate of the backlight module attached to the rear of the liquid crystal display panel, thereby reducing the product weight and reducing the manufacturing process. Simplification to increase production speed, thereby reducing manufacturing costs and increasing market competitiveness, and enhancing the reflection effect of reflectors to increase brightness and obtain good quality. .

[0007]

[Means for Solving the Problems]

 According to the invention of claim 1, a backlight module is attached to the rear of the liquid crystal display panel, and the backlight module is composed of an upper diffusion piece, a prism piece, a lower diffusion piece, a light guide plate, and a reflection plate which are sequentially stacked, and A lamp lamp and a lamp tube are attached to the side of the reflection plate, and the light guide plate has a light guide structure, and the liquid crystal is formed so as to reflect light rays to the liquid crystal display panel by the backlight module and display a screen. The light guide plate structure of a liquid crystal display is characterized in that the light guide plate has a concave or arcuate front or rear surface. According to a second aspect of the present invention, there is provided a light guide plate structure for a liquid crystal display according to the first aspect, wherein a vertical or horizontal light guide engraving is formed on the concave arc surface of the light guide plate. According to a third aspect of the present invention, as the light guide plate structure for a liquid crystal display according to the first aspect, a point-like light guide structure regularly arranged on the concave arc surface of the light guide plate is formed. I have. The invention according to claim 4 is the light guide plate structure of a liquid crystal display according to claim 1, wherein an irregular light guide structure is formed on the concave arc surface of the light guide plate by sand spraying or etching. . The invention according to claim 5 is the light guide plate structure for a liquid crystal display according to claim 1, wherein a dot-like light guide structure is formed on the concave arc surface of the light guide plate by printing.

[0008]

[Embodiment of the invention]

 As shown in FIG. 1, in the present invention, a backlight module 2 is mounted behind a liquid crystal display panel 1, and the backlight module 2 is composed of an upper diffusion piece 21, a prism piece 22, a lower diffusion piece 23, a light guide plate. The light guide plate 24 is provided with a light guide structure, and the light guide plate 24 is provided with a light guide structure. In the light guide plate structure of the liquid crystal display formed so as to reflect light rays to the liquid crystal display panel 1 to display a screen, a front or rear surface of the light guide plate 24 is formed as a concave arc surface 24a. This is as shown in FIG.

With the above structure, the light guide plate 24 is configured to reflect and disperse light rays by forming a concave arc surface 24a integrally with the light guide plate 24 in front of or behind the light guide plate 24, and forming the reflection structure into a concave arc surface 24a. The concave arc surface 24a has a light condensing effect in the middle part, thereby obtaining a luminous intensity of a value equal to that of the periphery, thereby enhancing the reflection effect of the backlight to increase the brightness and improve the quality. To win.

Further, since the concave arc surface 24 a is provided in front of or behind the light guide plate 24, the overall weight is reduced.

As shown in FIGS. 3 and 4, the concave circular arc surface 24 a of the light guide plate 24 is provided with a vertical light guide engraving 24 b or a horizontal light guide engraving 24 c, The opposite horizontal light guide engraving 24c or the vertical light guide engraving 24b is formed. The structure for reflecting light beams provided on the light guide plate 24 is formed integrally with the light guide plate 24, thereby achieving the purpose of reflecting and diffusing light beams by the vertical light guide engraving 24b and the horizontal light engraving 24c. I do.

The vertical light guide engraving 24 b or the horizontal light engraving 24 c is formed directly on the concave arcuate surface 24 a of the light guide plate 24, thereby simplifying the manufacturing process and reducing the manufacturing cost, and Competitiveness can be improved.

Further, the vertical light guide engraving 24b and the horizontal light engraving 24c of the light guide plate 24 are formed directly, and therefore do not require secondary processing, thereby increasing the production speed and also increasing the manufacturing cost. Achieve the goal of reducing competition and increasing competitiveness in the market.

In addition, a point-like reflecting structure 24 e regularly arranged on the concave arc surface 24 a of the light guide plate 24 may be provided. This is as shown in FIGS. Alternatively, the irregular reflection structure 24d can be provided by sand spraying or etching. This is as shown in FIG. Alternatively, the point reflection structure 24f can be provided by a printing method. This is as shown in FIG. These are various alternative implementations of the present invention, which are provided for reference.

[0015]

[Effects of the Invention] In summary, the structure described in the present invention has never existed in the past, achieves the above-mentioned effects with certainty, and meets the requirements for utility model registration.

[Brief description of the drawings]

FIG. 1 is an exploded view of an assembly display of the present invention.

FIG. 2 is a sectional view of the light guide plate of the present invention.

FIG. 3 is another embodiment of the light guide plate of the present invention.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view of another embodiment of the light guide plate of the present invention.

FIG. 6 is a sectional view of FIG. 5;

FIG. 7 is a sectional view of another embodiment of the light guide plate of the present invention.

FIG. 8 is a sectional view showing another embodiment of the light guide plate of the present invention.

FIG. 9 is an exploded perspective view of a known assembly display.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 2 Back light module 21 Upper diffusion piece 22 Prism piece 23 Lower diffusion piece 24 Light guide plate 24a Concave arc surface 24b Vertical light guide marking 24c Horizontal light guide marking 24d Point reflection structure 24e Irregular reflection structure 24f Printing point reflection structure 25 Reflector 26 Lamp shade 27 Light tube

Claims (5)

[Utility model registration claims] 1. A backlight module is mounted behind a liquid crystal display panel. The backlight module is composed of an upper diffusion piece, a prism piece, a lower diffusion piece, a light guide plate, and a reflection plate, which are sequentially stacked, and a reflection plate. The light guide plate has a light guide structure, and the backlight module reflects light rays to the liquid crystal display panel to form a screen for displaying a screen. A light guide plate structure for a liquid crystal display, wherein a front or rear surface of the light guide plate has a concave arc surface. 2. The light guide plate structure of a liquid crystal display according to claim 1, wherein a vertical or horizontal light guide engraving is formed on the concave arc surface of the light guide plate. 3. The light guide plate structure of a liquid crystal display according to claim 1, wherein point light guide structures arranged regularly on the concave arc surface of the light guide plate are formed. 4. The light guide plate structure of a liquid crystal display according to claim 1, wherein an irregular light guide structure is formed on the concave arc surface of the light guide plate by sand spraying or etching. 5. The light guide plate structure of a liquid crystal display according to claim 1, wherein a point light guide structure is formed on the concave arc surface of the light guide plate by printing.