CN213302730U

CN213302730U - Backlight device for mobile phone light guide plate

Info

Publication number: CN213302730U
Application number: CN202022571757.XU
Authority: CN
Inventors: 董文海; 彭迪生
Original assignee: Suzhou Pengfu Photoelectric Technology Co ltd
Current assignee: Suzhou Pengfu Photoelectric Technology Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-05-28
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a backlight device for cell-phone class light guide plate, including the light guide plate, the rear end of light guide plate is provided with adjusts luminance according to the point, adjust luminance according to the rear end of point and be provided with leak protection light mechanism, leak protection light mechanism includes frame, white glue, reflector plate, light-emitting component, leak protection light mechanism's rear end is provided with location frame mechanism, location frame mechanism includes first framework, light-blocking membrane, second framework, recess, blotter, spring preforming, the front end of light guide plate is provided with down the diffusion piece, the front end of diffusion piece is provided with down the prism piece down, the front end of prism piece is provided with high-efficient leaded light mechanism down, high-efficient leaded light mechanism includes light source, last prism piece, light-reflecting surface, groove structure. A backlight unit for cell-phone class light guide plate, possess high-efficient leaded light, the location frame, advantages such as leak protection light bring better use prospect.

Description

Backlight device for mobile phone light guide plate

Technical Field

The utility model relates to a backlight device technical field of cell-phone class light guide plate specifically is a backlight device for cell-phone class light guide plate.

Background

The backlight source is a light source for providing an LCD panel, mainly comprises a light source, a light guide plate, an optical film, a plastic frame and the like, has the characteristics of high brightness, long service life, uniform light emission and the like, is mainly provided with three types of backlight sources of EL, CCFL and LED at present, is divided into an edge type backlight source and a direct type backlight source according to different light source distribution positions, and becomes the mainstream of the backlight source development along with the continuous development of an LCD module to be brighter, lighter and thinner.

The backlight device of current cell-phone class light guide plate has certain drawback when the installation is used, at first, the reflector plate is fixed with gluing the frame and using two-sided gluing, all can the light leak in the periphery of gum, use black gum to reduce the light leak now generally, but can let the luminance loss of backlight about 3%, unable make full use of light source, secondly, the light-emitting rate is low, and do not possess the outer frame function of location, certain adverse effect has been brought for people's use, for this, we provide a backlight device for cell-phone class light guide plate.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

The utility model provides a be not enough to prior art, the utility model provides a backlight device for cell-phone class light guide plate possesses high-efficient leaded light, and the location frame, advantages such as leak protection light can effectively solve the problem among the background art.

Technical scheme

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a backlight unit for cell-phone class light guide plate, includes the light guide plate, the rear end of light guide plate is provided with adjusts luminance according to the point, adjust luminance according to the rear end of point and be provided with leak protection light mechanism, leak protection light mechanism includes frame, white glue, reflector plate, light-emitting component, leak protection light mechanism's rear end is provided with location frame mechanism, location frame mechanism includes first framework, light-blocking membrane, second framework, recess, blotter, spring preforming, the front end of light guide plate is provided with down the diffusion piece, the front end of diffusion piece is provided with down the prism piece down, the front end of prism piece is provided with high-efficient light guide mechanism down, high-efficient light guide mechanism includes light source, last prism piece, light reflex surface, groove structure, high-efficient light guide mechanism's front end is provided with the.

Preferably, the light source is located at the front end of the upper prism sheet, the light reflecting surface is located at the rear end of the upper prism sheet, and the groove structure is located inside the light reflecting surface.

Preferably, the light shielding film is located on one side of the first frame body, the second frame body is located on the inner side of the first frame body, the groove is located on one side of the second frame body, the buffer pad and the spring pressing sheet are located inside the second frame body, and the buffer pad is located on one side of the spring pressing sheet.

Preferably, the white glue is located on one side of the frame, the reflector plate is located on the other side of the frame, and the light emitting assembly is located on one side of the reflector plate.

Preferably, a mounting groove is formed between the light reflecting surface and the groove structure, the inner surface of one side of the light reflecting surface is fixedly connected with the outer surface of one side of the groove structure through the mounting groove, a fixing groove is formed between the light source and the upper prism sheet, and the outer surface of one side of the light source is fixedly connected with the outer surface of one side of the upper prism sheet through the fixing groove.

Preferably, a strong glue is arranged between the first frame body and the light blocking film, the outer surface of one side of the first frame body is fixedly connected with the outer surface of one side of the light blocking film through the strong glue, an adhesive glue is arranged between the buffer pad and the second frame body, and the outer surface of one side of the buffer pad is fixedly connected with the inner surface of one side of the second frame body through the adhesive glue.

Preferably, a fixing glue is arranged between the frame and the white glue, the outer surface of one side of the frame is fixedly connected with the outer surface of one side of the white glue through the fixing glue, a fixing block is arranged between the reflector plate and the light emitting assembly, and the outer surface of one side of the reflector plate is fixedly connected with the outer surface of one side of the light emitting assembly through the fixing block.

Advantageous effects

Compared with the prior art, the utility model provides a backlight device for cell-phone class light guide plate possesses following beneficial effect:

1. this a backlight device for cell-phone class light guide plate, through the high-efficient light guiding mechanism who sets up, by the light source, go up the prism piece, light reflecting surface and groove structure constitute, be formed with a plurality of groove structure on the light reflecting surface, each groove structure has the first concave surface towards the light source and the second concave surface of light source dorsad, and the contained angle of the plane direction of first concave surface and light reflecting surface is no longer than 35 degrees, can increase the luminous flux of incident to the human eye viewing angle scope, and reduce the luminous flux of the microprism structure total reflection of the piece of adding lustre, effectively improve the brilliance of light guide plate and then promote backlight module's luminous efficiency.

2. This a backlight unit for cell-phone class light guide plate, location frame mechanism through setting up, the surface of first framework is equipped with one deck membrane that blocks light, and the internal fixed surface of first framework installs the second framework, the internal surface of second framework is equipped with blotter and spring preforming, and the one end of blotter is equipped with the spring preforming, still be equipped with the recess, can convenient to detach and installation, and can prevent that expanded problem from appearing in the light guide plate and extrusion deformation, can play the effect of light gathering, let the penetrating light of light guide plate more, the light-emitting is more even, be suitable for different working conditions, bring better use prospect.

3. The backlight device for the mobile phone light guide plate is characterized in that a light leakage prevention mechanism is arranged, and the light leakage prevention mechanism is composed of a frame, white glue, a reflecting sheet and a light emitting component.

Drawings

Fig. 1 is a schematic view of the overall structure of a backlight device for a light guide plate of a mobile phone according to the present invention.

Fig. 2 is a schematic view of a high-efficiency light guide mechanism of a backlight device for a light guide plate of a mobile phone.

Fig. 3 is a schematic diagram of a positioning frame mechanism of a backlight device for a light guide plate of a mobile phone according to the present invention.

Fig. 4 is a schematic view of a light leakage preventing mechanism of a backlight device for a light guide plate of a mobile phone according to the present invention.

In the figure: 1. a light guide plate; 2. a high-efficiency light guide mechanism; 201. a light source; 202. an upper prism sheet; 203. a light reflecting surface; 204. a groove structure; 3. a positioning outer frame mechanism; 301. a first frame body; 302. a light-blocking film; 303. a second frame body; 304. a groove; 305. a cushion pad; 306. pressing a spring plate; 4. a light leakage prevention mechanism; 401. a frame; 402. white glue; 403. a reflective sheet; 404. a light emitting assembly; 5. dimming the data points; 6. a lower diffusion sheet; 7. a lower prism sheet; 8. and an upper diffusion sheet.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a backlight device for a light guide plate of a mobile phone comprises a light guide plate 1, a light adjusting spot 5 is disposed at the rear end of the light guide plate 1, a light leakage preventing mechanism 4 is disposed at the rear end of the light adjusting spot 5, the light leakage preventing mechanism 4 comprises a frame 401, a white glue 402, a reflective sheet 403, and a light emitting component 404, a positioning frame mechanism 3 is disposed at the rear end of the light leakage preventing mechanism 4, the positioning frame mechanism 3 comprises a first frame 301, a light blocking film 302, and a second frame 303, the light guide plate comprises a groove 304, a buffer 305 and a spring pressing sheet 306, wherein the front end of the light guide plate 1 is provided with a lower diffusion sheet 6, the front end of the lower diffusion sheet 6 is provided with a lower prism sheet 7, the front end of the lower prism sheet 7 is provided with a high-efficiency light guide mechanism 2, the high-efficiency light guide mechanism 2 comprises a light source 201, an upper prism sheet 202, a light reflecting surface 203 and a groove structure 204, and the front end of the high-efficiency light guide mechanism 2 is provided with an upper.

Further, the light source 201 is located at the front end of the upper prism sheet 202, the light reflecting surface 203 is located at the rear end of the upper prism sheet 202, and the groove structure 204 is located inside the light reflecting surface 203, so that the luminous flux incident to the visual angle range of the human eye can be increased, and the luminous flux totally reflected by the micro-prism structure of the brightness enhancement film can be reduced.

Further, the light blocking film 302 is located on one side of the first frame 301, the second frame 303 is located on the inner side of the first frame 301, the groove 304 is located on one side of the second frame 303, the buffer 305 and the spring pressing sheet 306 are located inside the second frame 303, and the buffer 305 is located on one side of the spring pressing sheet 306, so that the light blocking film can be conveniently detached and installed, can prevent the light guide plate from being extruded and deformed due to the expansion problem, and can play a role in gathering light.

Further, white glue 402 is located on one side of the frame 401, the reflective sheet 403 is located on the other side of the frame 401, and the light emitting assembly 404 is located on one side of the reflective sheet 403, so that light reaching the surface of the white glue is reflected back for recycling, thereby improving backlight brightness, solving the problem of light leakage, and fully utilizing light sources.

Further, a mounting groove is formed between the light reflecting surface 203 and the groove structure 204, an inner surface of one side of the light reflecting surface 203 is fixedly connected with an outer surface of one side of the groove structure 204 through the mounting groove, a fixing groove is formed between the light source 201 and the upper prism sheet 202, and an outer surface of one side of the light source 201 is fixedly connected with an outer surface of one side of the upper prism sheet 202 through the fixing groove, so that the luminance of the light guide plate is effectively improved, and the light emitting efficiency of the backlight module is further improved.

Furthermore, a strong glue is arranged between the first frame body 301 and the light blocking film 302, the outer surface of one side of the first frame body 301 is fixedly connected with the outer surface of one side of the light blocking film 302 through the strong glue, an adhesive glue is arranged between the buffer pad 305 and the second frame body 303, the outer surface of one side of the buffer pad 305 is fixedly connected with the inner surface of one side of the second frame body 303 through the adhesive glue, light emitting is more uniform, the light blocking device is suitable for different working conditions, and a better use prospect is brought.

Further, a fixing adhesive is arranged between the frame 401 and the white adhesive 402, an outer surface of one side of the frame 401 is fixedly connected with an outer surface of one side of the white adhesive 402 through the fixing adhesive, a fixing block is arranged between the reflection sheet 403 and the light emitting component 404, and an outer surface of one side of the reflection sheet 403 is fixedly connected with an outer surface of one side of the light emitting component 404 through the fixing block, so that the light leakage problem of the backlight source can be further reduced, and the light source utilization rate of the backlight source is further improved.

Principle of operation

The utility model discloses a light guide plate 1, high-efficient light guide mechanism 2, light source 201, go up prism sheet 202, light reflection surface 203, groove structure 204, location frame mechanism 3, first framework 301, light blocking membrane 302, second framework 303, recess 304, blotter 305, spring pressing piece 306, leak protection light mechanism 4, frame 401, white glue 402, reflector plate 403, light-emitting component 404, adjust luminance according to some 5, lower diffusion 6, lower prism sheet 7 and last diffusion 8, when using, through the high-efficient light guide mechanism 2 that sets up, by light source 201, last prism sheet 202, light reflection surface 203 and groove structure 204 constitute, be formed with a plurality of groove structure 204 on light reflection surface 203, each groove structure 204 has the first concave surface towards the light source and the second concave surface that faces away from the light source, and the contained angle of the plane direction of first concave surface and light reflection surface 203 is no more than 35 degrees, can increase the luminous flux of incidenting to human eye angle scope, light reflection surface is wide, The light flux totally reflected by the microprism structure of the brightness enhancement film is reduced, the luminance of the light guide plate 1 is effectively improved, and the light emitting efficiency of the backlight module is further improved, through the arranged positioning outer frame mechanism 3, the outer surface of the first frame body 301 is provided with the light blocking film 302, the inner surface of the first frame body 301 is fixedly provided with the second frame body 303, the inner surface of the second frame body 303 is provided with the buffer cushion 305 and the spring pressing sheet 306, one end of the buffer cushion 305 is provided with the spring pressing sheet 306, and the groove 304 is also arranged, so that the light guide plate can be conveniently detached and installed, the problem of expansion and extrusion deformation of the light guide plate 1 can be prevented, the light gathering effect can be realized, the incident light of the light guide plate 1 is more, the light emitting is more uniform, the light emitting device is suitable for different working conditions, and a better use prospect is brought, and the light leakage prevention mechanism, the black back adhesive on the periphery of the existing backlight source is changed into the white adhesive 402, light cannot penetrate through the white adhesive 402, light does not leak out of the back adhesive position, and the light reaching the surface of the white adhesive 402 is reflected back to be recycled, so that the backlight brightness is improved, the light leakage problem is solved, a light source is fully utilized, the back adhesive for sticking the light-emitting component is also changed into the white adhesive 402, the light leakage problem of the backlight source can be further reduced, and the light source utilization rate of the backlight source is further improved.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A backlight device for a light guide plate of the mobile phone type, comprising a light guide plate (1), characterized in that: the rear end of light guide plate (1) is provided with adjusts luminance and is located point (5), the rear end of adjusting luminance and being located point (5) is provided with leak protection light mechanism (4), leak protection light mechanism (4) are including frame (401), white glue (402), reflector plate (403), light-emitting component (404), the rear end of leak protection light mechanism (4) is provided with location frame mechanism (3), location frame mechanism (3) are including first framework (301), be shaded membrane (302), second framework (303), recess (304), blotter (305), spring preforming (306), the front end of light guide plate (1) is provided with diffusion sheet (6) down, the front end of diffusion sheet (6) is provided with down prism piece (7) down, the front end of prism piece (7) is provided with high-efficient light guide mechanism (2) down, high-efficient light guide mechanism (2) include light source (201), The high-efficiency light guide mechanism comprises an upper prism sheet (202), a light reflecting surface (203) and a groove structure (204), wherein an upper diffusion sheet (8) is arranged at the front end of the high-efficiency light guide mechanism (2).

2. A backlight device for a light guide plate of a mobile phone type according to claim 1, wherein: the light source (201) is positioned at the front end of the upper prism sheet (202), the light reflecting surface (203) is positioned at the rear end of the upper prism sheet (202), and the groove structure (204) is positioned inside the light reflecting surface (203).

3. A backlight device for a light guide plate of a mobile phone type according to claim 1, wherein: the light shielding film (302) is located on one side of the first frame body (301), the second frame body (303) is located on the inner side of the first frame body (301), the groove (304) is located on one side of the second frame body (303), the buffer pad (305) and the spring pressing sheet (306) are located inside the second frame body (303), and the buffer pad (305) is located on one side of the spring pressing sheet (306).

4. A backlight device for a light guide plate of a mobile phone type according to claim 1, wherein: the white glue (402) is positioned on one side of the frame (401), the reflecting sheet (403) is positioned on the other side of the frame (401), and the light-emitting component (404) is positioned on one side of the reflecting sheet (403).

5. A backlight device for a light guide plate of a mobile phone type according to claim 2, wherein: a mounting groove is formed between the light reflecting surface (203) and the groove structure (204), the inner surface of one side of the light reflecting surface (203) is fixedly connected with the outer surface of one side of the groove structure (204) through the mounting groove, a fixing groove is formed between the light source (201) and the upper prism sheet (202), and the outer surface of one side of the light source (201) is fixedly connected with the outer surface of one side of the upper prism sheet (202) through the fixing groove.

6. A backlight device for a light guide plate of a mobile phone type according to claim 3, wherein: be provided with the super glue between first framework (301) and light-blocking film (302), and one side surface of first framework (301) passes through super glue and one side surface fixed connection of light-blocking film (302), be provided with adhesive between blotter (305) and second framework (303), and one side surface of blotter (305) passes through adhesive and one side internal surface fixed connection of second framework (303).

7. The backlight device for a light guide plate of a mobile phone set as claimed in claim 4, wherein: the LED lamp is characterized in that a fixing glue is arranged between the frame (401) and the white glue (402), the outer surface of one side of the frame (401) is fixedly connected with the outer surface of one side of the white glue (402) through the fixing glue, a fixing block is arranged between the reflecting sheet (403) and the light emitting component (404), and the outer surface of one side of the reflecting sheet (403) is fixedly connected with the outer surface of one side of the light emitting component (404) through the fixing block.