CN210534489U

CN210534489U - Optical film light leak covering device

Info

Publication number: CN210534489U
Application number: CN201921251777.XU
Authority: CN
Inventors: 刘勇; 刘礼龙
Original assignee: Zhuhai Kemi Optoelectronics Co ltd
Current assignee: Zhuhai Kemi Optoelectronics Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-05-15
Anticipated expiration: 2029-08-05

Abstract

The utility model provides an optical film light leak covers device, including gluing the frame and installing first anti-dazzling screen, second anti-dazzling screen and barn door on gluing the frame, install at positive preceding frame, the length direction that the frame was glued to the definition is left right direction, and width direction is the fore-and-aft direction, the inner chamber of gluing the frame is provided with optical film, the both sides at the fore-and-aft direction are installed to the barn door, the barn door inboard all is provided with first anti-dazzling screen, first anti-dazzling screen is the L type, the barn door of laminating of a side of first anti-dazzling screen, the upper surface at direction edge about optical film is laminated to another side. The utility model discloses a be provided with the first anti-dazzling screen and the second anti-dazzling screen of laminating in the top of optics diaphragm, play the effect that covers to optics diaphragm, can effectively avoid optics diaphragm the phenomenon of light leak to appear, guaranteed backlight unit's normal use, simple structure is reasonable, has very strong practicality.

Description

Optical film light leak covering device

Technical Field

The utility model relates to a backlight unit field specifically is an optics diaphragm light leak covering device.

Background

The backlight module (Back light module) is one of the key components of a liquid crystal display (LCD panel), and since the liquid crystal itself does not emit light, the backlight module functions to provide a sufficient light source with uniform brightness and distribution, so that it can normally display images. LCD panels are widely used in electronic products with growth potential, such as monitors, notebook computers, digital cameras and projectors, so as to drive the continuous growth of the backlight module and the related components, and the LCD panels with large size, such as notebook computers and LCD monitors, are the most important power source for the growth of the backlight module under the stimulation of low cost of the panels.

Including the optics diaphragm in backlight unit, in case the condition of light leak appears in the optics diaphragm, can influence backlight unit's normal use greatly, current optics diaphragm leak protection light effect is poor, lacks a simple and reliable device that covers moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optics diaphragm light leak protection light cover device solves current optics diaphragm leak protection light effect poor, lacks a simple and reliable cover device's problem moreover.

To achieve the above objective, the present invention provides the following technical solutions: an optical diaphragm light leakage covering device comprises a rubber frame, a first light shading piece, a second light shading piece and a light barrier, wherein the first light shading piece, the second light shading piece and the light barrier are arranged on the rubber frame;

the second light shading piece is arranged at the joint of the rubber frame and the optical film, and the top of the second light shading piece is bent inwards to cover the upper surfaces of the optical film and the edges of the rubber frame in the front-back direction.

Further, the utility model discloses in, optical film includes from supreme down diffusion piece, compound light concentrating piece, the last diffusion piece and the LCD panel of having set gradually, the surface and the first piece and the second of preventing light-shading of LCD panel are laminated, and diffusion piece and last diffusion piece can provide an even area light source for LCD down.

Further, the utility model discloses in, cold cathode fluorescent lamp and lamp-reflecting cover are still installed in the left side of gluing the frame inner chamber, the setting that the lamp-reflecting cover semi-enclosed is on the surface of cold cathode fluorescent lamp.

Further, the utility model discloses in, the bottom of optics diaphragm still is provided with light guide plate and reflector plate, the front side and the rear side of reflector plate and light guide plate all laminate with the second anti-dazzling screen, the bottom setting of reflector plate is in the bottom of gluing the frame inner chamber, the top laminating of reflector plate is in the bottom of light guide plate, and reflector plate preparation material is PET or PC substrate, and the reflectivity reaches 90%, and its effect is that the reflector plate is placed in the light guide plate bottom, will be from the light reflection that the bottom surface spilt back to the light guide plate in, prevent that the light source leaks outward to increase the availability factor of light, and straight following formula backlight unit then arranges lamp house bottom surface in or pastes on it, will be through the light beam of diffusion piece reflection under by the bottom reflection diffusion piece again down.

Further, the utility model discloses in, four limit laminating of light guide plate have the anti-dazzling paper, can prevent that the condition of light leak from appearing in the light guide plate side, greatly increased the effect that the light guide plate used.

Further, the utility model discloses in, be provided with the black and white double faced adhesive tape on the lamp reflector, can play the effect of shading, avoid the light edgewise of cold cathode lamp pipe to spill.

Further, the utility model discloses in, first anti-dazzling screen and second anti-dazzling screen are all pasted on the LCD panel through black and white double faced adhesive tape, are favorable to increasing the effect that first anti-dazzling screen and second anti-dazzling screen shaded, can play fixed effect to first anti-dazzling screen and second anti-dazzling screen simultaneously, have increased the stability that first anti-dazzling screen and second anti-dazzling screen, have prolonged the life of first anti-dazzling screen and second anti-dazzling screen.

Further, the utility model discloses in, the thickness of first anti-dazzling screen and second anti-dazzling screen is three millimeters, and through setting up first anti-dazzling screen into the L shape of three millimeters, laminating optical film piece that can be better, the effect of cooperation black and white double faced adhesive tape with first anti-dazzling screen is brought into play to the best.

Further, the utility model discloses in, the material of first anti-dazzling screen and second anti-dazzling screen is silica gel, and the material is soft, simple to operate, long service life.

The beneficial effects are that the technical scheme of this application possesses following technological effect:

1. the utility model discloses a be provided with the first anti-dazzling screen and the second anti-dazzling screen of laminating in the top of optics diaphragm, play the effect that covers to optics diaphragm, can effectively avoid optics diaphragm the phenomenon of light leak to appear, guaranteed backlight unit's normal use, simple structure is reasonable, has very strong practicality.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the local structure of the present invention.

Fig. 3 is a schematic sectional view of another view of the present invention.

In the figures, the meaning of the reference numerals is as follows: 1. a rubber frame; 2. a front frame; 3. a reflective sheet; 4. a light guide plate; 5. a lower diffusion sheet; 6. compounding light collecting sheets; 7. an upper diffusion sheet; 8. an LCD panel; 9. a light barrier; 10. A cold cathode lamp tube; 11. a lamp reflector; 12. a first light shielding member; 13. a second light shielding member.

Detailed Description

For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

The utility model provides an optical film light leak covers device, including gluing frame 1 and installing first anti-dazzling screen 12 on gluing frame 1, second anti-dazzling screen 13 and barn door 9, install and glue frame 1 positive preceding frame 2, the length direction that frame 1 was glued in the definition is left right direction, width direction is the fore-and-aft direction, the inner chamber of gluing frame 1 is provided with optical film, barn door 9 installs the both sides at the fore-and-aft direction, barn door 9 inboard all is provided with first anti-dazzling screen 12, first anti-dazzling screen 12 is the L type, a side laminating barn door of first anti-dazzling screen 12, the laminating of another side is at the upper surface at optical film left right direction edge.

The second light shading part 13 is arranged at the joint of the rubber frame 1 and the optical film, and the top of the second light shading part 13 is bent inwards to cover the upper surfaces of the optical film and the edges of the rubber frame 1 in the front-back direction.

Further, in this embodiment, the optical film includes a lower diffusion sheet 5, a composite light collecting sheet 6, an upper diffusion sheet 7 and an LCD panel 8, which are sequentially disposed from bottom to top, the bonding surfaces of the first light-shielding member 12 and the second light-shielding member 13 and the optical film are the outer surfaces of the LCD panel 8, the outer surfaces of the LCD panel 8 and the first light-shielding member 12 and the second light-shielding member 13 are bonded, the lower diffusion sheet 5 and the upper diffusion sheet 7 are made of PET or PC base materials, the front surface is smooth, and the back surface is rough, the manufacturing method is to coat a diffusion layer (made of transparent resin mixed light diffusion material) on the PET base material, the PC is used as a base material, and the roller is used for hot pressing to form a, the distinguishing method is that the PET material is slightly yellow when light passes through, the PC material is slightly blue when light passes through, and the lower diffusion sheet 5 and the upper diffusion sheet 7 have the function of providing a uniform surface light source for the liquid crystal display.

Further, in this embodiment, a cold cathode fluorescent lamp 10 and a lamp reflector 11 are further installed on the left side of the inner cavity of the rubber frame 1, and the lamp reflector 11 is disposed on the surface of the cold cathode fluorescent lamp 10 in a half-surrounded manner.

Further, in this embodiment, the bottom of the optical film is further provided with a light guide plate 4 and a reflector plate 3, the front side and the rear side of the reflector plate 3 and the light guide plate 4 are both attached to the second light-shielding member 13, the bottom of the reflector plate 3 is disposed at the bottom of the inner cavity of the rubber frame 1, the top of the reflector plate 3 is attached to the bottom of the light guide plate 4, the reflector plate 3 is made of a PET or PC substrate, the reflectivity reaches 90%, and the reflector plate 3 is disposed at the bottom of the light guide plate 4 to reflect the light leaked from the bottom back into the light guide plate 4, so as to prevent the light source from leaking outside, thereby increasing the utilization efficiency of the light, while the direct-type backlight module is disposed on the bottom surface of the light box or adhered to the light box, and reflects the light beam reflected by the lower diffusion.

Further, in this embodiment, the light shielding paper is attached to four edges of the light guide plate 4, so that the light leakage of the side edge of the light guide plate can be prevented, and the use effect of the light guide plate is greatly increased.

Further, in this embodiment, the black-and-white double-sided tape is disposed on the lamp reflector 11, so as to shield light and prevent light of the cold cathode fluorescent lamp 10 from leaking out from the side surface.

Further, in this embodiment, the first light-shielding member 12 and the second light-shielding member 13 are both attached to the LCD panel 8 by the black-and-white double-sided adhesive, which is beneficial to increase the light-shielding effect of the first light-shielding member 12 and the second light-shielding member 13, and can play a role in fixing the first light-shielding member 12 and the second light-shielding member 13, thereby increasing the stability of the first light-shielding member 12 and the second light-shielding member 13, and prolonging the service life of the first light-shielding member 12 and the second light-shielding member 13.

Further, in this embodiment, the thicknesses of the first light shielding member 12 and the second light shielding member 13 are both three millimeters, and the first light shielding member 12 is set to be L-shaped with three millimeters, so that the optical film can be better attached, and the effect of the first light shielding member 12 can be best exerted by matching with the black-and-white double-sided adhesive tape.

Further, in this embodiment, the first light-shielding member 12 and the second light-shielding member 13 are made of silica gel, and are soft in material, convenient to mount, and long in service life.

During the use for first light-shading piece 12 and the laminating of second light-shading piece 13 are in the junction of optics diaphragm and gluey frame 1, and first light-shading piece 12 and the lateral buckling of second light-shading piece 13 to the optics diaphragm and cover on the optics diaphragm, avoid the condition that the light leak appears in the optics diaphragm.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides an optical film light leak covers device, includes gluey frame (1) and installs first anti-dazzling screen (12), second anti-dazzling screen (13) and barn door (9) on gluey frame (1), installs frame (2), its characterized in that before gluey frame (1) is positive: defining the length direction of a rubber frame (1) as the left-right direction, the width direction as the front-back direction, arranging an optical diaphragm in an inner cavity of the rubber frame (1), installing light baffles (9) at two sides of the front-back direction, arranging first light-shading parts (12) at the inner sides of the two light baffles (9), wherein the first light-shading parts (12) are L-shaped, one side surface of each first light-shading part (12) is attached to the light baffles (9), and the other side surface is attached to the upper surface of the edge of the optical diaphragm in the left-right direction;

the second shading part (13) is arranged at the joint of the rubber frame (1) and the optical film, and the top of the second shading part (13) is bent inwards to cover the upper surfaces of the optical film and the front and rear edges of the rubber frame (1).

2. The optical film light leakage covering device of claim 1, wherein: the optical film comprises a lower diffusion sheet (5), a composite light collecting sheet (6), an upper diffusion sheet (7) and an LCD panel (8) which are sequentially arranged from bottom to top, and the outer surface of the LCD panel (8) is attached to a first shading piece (12) and a second shading piece (13).

3. The optical film light leakage covering device of claim 2, wherein: the left side of the inner cavity of the rubber frame (1) is also provided with a cold cathode lamp tube (10) and a lamp reflecting cover (11), and the lamp reflecting cover (11) is arranged on the surface of the cold cathode lamp tube (10) in a semi-surrounding mode.

4. The optical film light leakage shielding device of claim 3, wherein: the bottom of optics diaphragm still is provided with light guide plate (4) and reflector plate (3), the front side and the rear side of reflector plate (3) and light guide plate (4) all laminate with second lightproof (13), the bottom setting of reflector plate (3) is in the bottom of gluing frame (1) inner chamber, the top laminating of reflector plate (3) is in the bottom of light guide plate (4).

5. The optical film light leakage shielding device of claim 4, wherein: and four edges of the light guide plate (4) are attached with shading paper.

6. The optical film light leakage shielding device of claim 5, wherein: and a black-white double-sided adhesive tape is arranged on the lamp reflector (11).

7. The optical film light leakage covering device of claim 6, wherein: the first shading piece (12) and the second shading piece (13) are adhered to the LCD panel (8) through black-white double-sided glue.

8. The optical film light leakage shielding device of claim 7, wherein: the thicknesses of the first shading piece (12) and the second shading piece (13) are three millimeters.

9. The optical film light leakage covering device of claim 8, wherein: the first shading part (12) and the second shading part (13) are made of silica gel.