WO2016078119A1

WO2016078119A1 - Optical film positioning structure of backlight module, backlight module and display

Info

Publication number: WO2016078119A1
Application number: PCT/CN2014/092591
Authority: WO
Inventors: 周革革
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2014-11-17
Filing date: 2014-11-29
Publication date: 2016-05-26
Also published as: CN104373870A

Abstract

Provided is an optical film positioning structure of a backlight module (10). The backlight module (10) comprises a plastic frame (13) and an optical film (17). Several positioning pieces (171) are arranged on a non-light-incident edge of the optical film (17), and are parallel to the optical film (17) and formed by extending in a direction away from the optical film (17). A positioning groove (133) is formed in the surface, of the plastic frame (13), in the same horizontal plane with the optical film (17). A side wall (131) of the plastic frame (13) is located on the periphery of the optical film (17). The positioning pieces (171) are retained in the positioning groove (133). Also provided are the backlight module (10) and a display.

Description

Backlight module optical film positioning structure, backlight module and display

The present invention claims the prior application priority of the application No. 201410655777.1, entitled "Backlight Module Optical Film Positioning Structure, Backlight Module and Display", which is filed on November 17, 2014, and the content of the above prior application is introduced. Incorporated into this text.

Technical field

The present invention relates to the field of liquid crystal display technology, and in particular, to a backlight module optical film positioning structure, a backlight module and a display.

Background technique

At present, a liquid crystal display device has been widely used as a display component of an electronic device in various electronic products. As the electronic product is light and thin, the frame of the electronic device is designed to be narrower and narrower. The backlight module is an important component in the liquid crystal display device, and the frame of the backlight module is also required to be narrower and narrower.

The backlight modules of the prior art each include a plastic frame, and the light guide plate is surrounded by the plastic frame, and the optical film is fixed on the light guide plate and the plastic frame by the light shielding tape. The plastic frame is used as a carrier for carrying the light guide plate and the optical film, and is an important component of the backlight module. However, due to the large thickness of the side wall of the plastic frame, a long double-sided tape is required to fix the plastic frame and the optical film, thereby increasing the overall thickness of the non-visible area frame.

Summary of the invention

An object of the present invention is to provide a backlight module optical film positioning structure, a backlight module and a display, so that the backlight module and the display have a narrow bezel.

The present invention provides a backlight module optical film positioning structure, the backlight module includes a plastic frame and an optical film, wherein the optical film has a plurality of positioning pieces at a non-lighting edge, and the positioning piece is parallel. An optical film is formed extending away from the optical film, and a positioning groove is formed on the surface of the plastic frame that is on the same horizontal plane as the optical film, and the positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning The chip is held in the positioning slot.

Wherein, the plastic frame comprises a side wall, and a surface at the same horizontal plane as the optical film is an upper surface of the side wall, and the positioning groove is formed on the upper surface.

Wherein, the upper surface of the side wall and the periphery of the optical film are fixed in the positioning groove by providing double-sided tape.

The positioning piece is a rectangular piece, a triangular piece or a trapezoidal piece, and the shape of the positioning groove is a shape suitable for the positioning piece.

The backlight module includes a backing plate, a plastic frame, a light guide plate and an optical film. The light guide plate and the optical film are mounted in the back plate, and the plastic frame is mounted on the back cover. a peripheral edge of the backing plate and surrounding the light guide plate and the optical film, wherein the optical film is provided with a plurality of positioning pieces, and the positioning piece is formed by extending the parallel optical film away from the optical film. A positioning groove is defined in the surface of the optical frame and the optical film on the same horizontal surface. The positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is held in the positioning groove.

The backplane includes a bottom plate and a side plate, and the backlight module further includes a reflective sheet, and the reflective sheet is disposed between the bottom plate and the light guide plate.

The plastic frame includes a sidewall disposed adjacent to the side plate, and a surface at the same horizontal plane as the optical film is an upper surface of the sidewall, and the positioning groove is formed on the upper surface.

The backlight module further includes a double-sided tape attached to the upper surface of the sidewall and the periphery of the optical film, and the positioning piece is fixed in the positioning groove.

The present invention provides a display, which includes a backlight module and a display panel, the backlight module includes a back plate, a plastic frame, a light guide plate and an optical film, and the light guide plate and the optical film are mounted on the back In the board, the plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The optical film has a plurality of positioning pieces on the non-lighting edge, and the positioning piece is parallel to the optical film. An optical film is formed, and a positioning groove is formed on a surface of the plastic frame and the optical film. The positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is clamped to the Position the slot. The display panel is disposed on the backlight module, and the display panel and the optical film and the plastic frame are fixed by double-sided tape.

The present invention provides a display including a backlight module and a display panel, the backlight The module includes a back plate, a plastic frame, a light guide plate, and an optical film. The light guide plate and the optical film are mounted in the back plate, and the plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate. An optical film having a plurality of positioning pieces disposed on the non-light-incident edge, the positioning piece parallel optical film extending away from the optical film, the plastic frame and the optical film being located on a surface of the same horizontal plane a positioning slot is defined, the positioning slot of the plastic frame is located at a periphery of the optical film, and the positioning piece is held in the positioning slot; the display panel is disposed on the backlight module, and the display is The front panel and the optical film and the plastic frame are fixed by a double-sided tape; wherein the back plate comprises a bottom plate and a side plate, and the backlight module further comprises a reflective sheet, wherein the reflective sheet is mounted on the bottom plate and the bottom plate Between the light guide plates.

The present invention provides a display, which includes a backlight module and a display panel, the backlight module includes a back plate, a plastic frame, a light guide plate and an optical film, and the light guide plate and the optical film are mounted on the back In the board, the plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The optical film has a plurality of positioning pieces on the non-lighting edge, and the positioning piece is parallel to the optical film. An optical film is formed, and a positioning groove is formed on a surface of the plastic frame and the optical film. The positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is clamped to the The display panel is disposed on the backlight module, and the display panel and the optical film and the plastic frame are fixed by a double-sided tape; wherein the back plate includes a bottom plate and a side The backlight module further includes a reflective sheet, the reflective sheet is disposed between the bottom plate and the light guide plate; the plastic frame includes a sidewall disposed adjacent to the side plate, and is located in the same optical film The surface of the horizontal plane is the upper surface of the side wall, Positioning groove is defined in said upper surface.

The present invention provides a display including a backlight module and a display panel. The backlight module includes a back plate, a plastic frame, a light guide plate, a double-sided tape, and an optical film. The light guide plate and the optical film package are mounted. The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel optical. The film is formed away from the optical film, and the positioning frame is disposed on the surface of the plastic film and the optical film. The positioning groove of the plastic frame is located at the periphery of the optical film, and the positioning card is The display panel is disposed on the backlight module, and the display panel is fixed between the optical film and the plastic frame by double-sided tape; wherein the back plate is The backlight module further includes a reflective sheet, the reflective sheet is disposed between the bottom plate and the light guide plate; the plastic frame includes a sidewall disposed adjacent to the side plate, and optical The surface of the diaphragm on the same horizontal plane is the upper surface of the side wall The The positioning groove is formed on the upper surface; the double-sided tape is adhered to the upper surface of the side wall and the periphery of the optical film, and the positioning piece is fixed in the positioning groove.

The present invention provides a display including a backlight module and a display panel. The backlight module includes a back plate, a plastic frame, a light guide plate, a double-sided tape, and an optical film. The light guide plate and the optical film package are mounted. The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel optical. The film is formed to extend away from the optical film, and the positioning frame is a rectangular groove, a triangular piece or a trapezoidal piece, and the positioning piece is a surface of the optical film. The shape of the groove is a shape corresponding to the positioning piece; the positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is held in the positioning groove; the display panel is disposed on the On the backlight module, the display panel and the optical film and the plastic frame are fixed by a double-sided tape; wherein the back plate includes a bottom plate and a side plate, and the backlight module further includes a reflective sheet. The reflector is mounted on the bottom plate and the guide Between the plates; the plastic frame includes a side wall that is disposed in close contact with the side plate, and a surface at the same horizontal plane as the optical film is an upper surface of the side wall, and the positioning groove is formed on the upper surface; The double-sided tape is attached to the upper surface of the side wall and the periphery of the optical film, and the positioning piece is fixed in the positioning groove.

The invention provides a positioning groove on the edge of the plastic frame of the backlight module by providing a positioning piece on the optical film. Since the positioning piece is inserted into the positioning groove to position the optical film, it is not necessary to attach a double-sided adhesive to the large area, thereby reducing the size. The thickness of the plastic frame reduces the width dimension of the double-sided tape that fixes the periphery of the plastic frame and the periphery of the optical film, thereby reducing the thickness of the frame of the backlight module and achieving the effect of a narrow frame.

DRAWINGS

In order to more clearly illustrate the technical solutions of the present invention, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention, which are common in the art. For the skilled person, other drawings can be obtained as shown in these drawings without any creative work.

1 is a schematic view showing the structure of a backlight module according to an embodiment of the present invention.

2 is a schematic view showing the cooperation of the positioning structure of the optical film of the backlight module of the present invention.

3 is a schematic cross-sectional view of the backlight module of FIG. 1.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , a preferred embodiment of the present invention provides a backlight module optical film positioning structure and a backlight module 10 . The backlight module 10 includes a back plate 11 , a plastic frame 13 , a light guide plate 15 , and an optical film 17 . The light guide plate 15 and the optical film 17 are sequentially mounted in the back plate 11 . The light guide plate 15 and the optical film 17 are surrounded by the periphery of the back plate 11.

The back plate 11 includes a bottom plate 111 and a side plate 112. The bottom plate 111 and the side plate 112 enclose a receiving space for receiving the plastic frame 13, the light guide plate 15 and the optical film 17. The backlight module further includes a retroreflective sheeting 19, and the retroreflective sheeting 19 is disposed between the bottom plate 111 and the light guide plate 15.

In this embodiment, the optical film 17 is provided with a plurality of positioning pieces 171 at the non-light-incident edge, and the positioning piece 171 is formed to extend away from the optical film 17 in parallel with the optical film 17. The plastic frame 13 has a rectangular sheet-like structure, and the plastic frame 13 includes a side wall 131. The side wall is disposed in the receiving space of the back plate 11 around the light guiding plate 15 . The surface on the same horizontal plane as the optical film 17 is the upper surface 132 of the side wall 131. A positioning groove 133 is defined in the upper surface 132. The sidewall 131 of the plastic frame 13 is located at the periphery of the optical film 17 , and the positioning piece 171 is locked in the positioning groove 133 .

The positioning piece 171 is a rectangular piece, a triangular piece or a trapezoidal piece, and the positioning groove has a shape corresponding to the positioning piece. In this embodiment, the positioning piece 171 is rectangular.

The backlight module 10 further includes a double-sided tape 18, and the double-sided tape 18 is attached to the side plate 112, the upper surface 132 of the sidewall 131, and the optical film 17, and the positioning piece 171 is fixed. In the positioning groove 133.

The present invention further provides a display, the display includes the backlight module 10 and a display panel, the display panel is disposed on the backlight module 10, and the display panel and the optical film 17 The plastic frame 13 is fixed by a double-sided tape 18.

The invention provides a positioning groove on the edge of the plastic frame 13 of the backlight module by providing the positioning piece 171 on the optical film 17. The positioning film is inserted into the positioning groove to position the optical film without large-area paste. The double-sided tape is fixed, the thickness of the plastic frame 13 is reduced, and the width dimension of the double-sided tape fixing the periphery of the plastic frame 13 and the optical film is reduced, thereby reducing the thickness of the frame of the backlight module. To achieve the effect of a narrow frame.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the claims of the present invention. The equivalent change is still within the scope of the invention.

Claims

A backlight module optical film positioning structure, the backlight module includes a plastic frame and an optical film, wherein the optical film has a plurality of positioning pieces at a non-light-incident edge, and the positioning piece is parallel to the optical film. A positioning groove is formed on the surface of the plastic frame that is located on the same horizontal plane as the optical film. The positioning groove of the plastic frame is located at the periphery of the optical film, and the positioning piece is clamped. In the positioning slot.
The optical module positioning structure of the backlight module of claim 1 , wherein the plastic frame comprises a side wall, and the surface on the same horizontal plane as the optical film is an upper surface of the side wall, and the positioning groove is opened in the On the surface.
The backlight module optical film positioning structure according to claim 2, wherein the upper surface of the side wall and the periphery of the optical film are fixed in the positioning groove by providing double-sided tape.
The optical film positioning structure of the backlight module of claim 3, wherein the positioning piece is a rectangular piece, a triangular piece or a trapezoidal piece, and the shape of the positioning groove is adapted to the positioning piece. shape.
A backlight module includes a back plate, a plastic frame, a light guide plate and an optical film, wherein the light guide plate and the optical film are mounted in the back plate, and the plastic frame is mounted on the back a peripheral edge of the plate and surrounding the light guide plate and the optical film, wherein the optical film is provided with a plurality of positioning pieces at a non-light-incident edge, and the positioning piece is formed by extending the parallel optical film away from the optical film. A positioning groove is formed on the surface of the optical frame and the optical film on the same horizontal surface. The positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is held in the positioning groove.
The backlight module of claim 5, wherein the backplane comprises a bottom plate and a side plate, and the backlight module further comprises a reflective sheet, the reflective sheet being mounted between the bottom plate and the light guide plate.
The backlight module as claimed in claim 6 , wherein the plastic frame comprises a sidewall disposed in close contact with the side panel, and a surface on the same horizontal plane as the optical film is an upper surface of the sidewall, The positioning groove is opened on the upper surface.
The backlight module as claimed in claim 7 , wherein the backlight module further comprises a double-sided tape, the double-sided tape being adhered to the upper surface of the sidewall and the periphery of the optical film and positioning The piece is fixed in the positioning groove.
The backlight module of claim 8, wherein the positioning piece is a rectangular piece, a triangular piece or a trapezoidal piece, and the positioning groove has a shape corresponding to the positioning piece.
A display device includes a backlight module and a display panel, the backlight module includes a back plate, a plastic frame, a light guide plate and an optical film, and the light guide plate and the optical film are mounted on the The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel to the optical film. The optical film is formed by extending, and the positioning frame of the plastic frame is located on the same horizontal surface, and the positioning groove of the plastic frame is located at the periphery of the optical film, and the positioning piece is held by the The display panel is disposed on the backlight module, and the display panel and the optical film and the plastic frame are fixed by double-sided tape.
A display device includes a backlight module and a display panel, the backlight module includes a back plate, a plastic frame, a light guide plate and an optical film, and the light guide plate and the optical film are mounted on the The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel to the optical film. The optical film is formed by extending, and the positioning frame of the plastic frame is located on the same horizontal surface, and the positioning groove of the plastic frame is located at the periphery of the optical film, and the positioning piece is held by the The display panel is disposed on the backlight module, and the display panel and the optical film and the plastic frame are fixed by a double-sided tape; wherein the back plate includes a bottom plate and The backlight module further includes a reflective sheet, and the reflective sheet is disposed between the bottom plate and the light guide plate.
A display device includes a backlight module and a display panel, the backlight module includes a back plate, a plastic frame, a light guide plate and an optical film, and the light guide plate and the optical film are mounted on the The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel to the optical film. The optical film is formed by extending, and the positioning frame of the plastic frame is located on the same horizontal surface, and the positioning groove of the plastic frame is located at the periphery of the optical film, and the positioning piece is held by the The display panel is disposed on the backlight module, and the display panel and the optical film and the plastic frame are fixed by a double-sided tape; wherein the back plate includes a bottom plate and a side panel, the backlight module further includes a reflective sheet, the reflective sheet is disposed between the bottom plate and the light guide plate; the plastic frame includes a sidewall disposed adjacent to the side plate, and is disposed on the optical film The surface of the same horizontal plane is the upper surface of the side wall. Locate The groove is opened on the upper surface.
A display, comprising: a backlight module and a display panel, the backlight module comprises a back plate, a plastic frame, a light guide plate, a double-sided tape and an optical film, the light guide plate and the optical film The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel. An optical film is formed away from the optical film, and a positioning groove is formed on the surface of the plastic frame and the optical film. The positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is The display panel is disposed on the backlight module, and the display panel is fixed between the optical film and the plastic frame by a double-sided tape; wherein the back is The board includes a bottom plate and a side plate, the backlight module further includes a reflective sheet, the reflective sheet is disposed between the bottom plate and the light guide plate; the plastic frame includes a sidewall disposed adjacent to the side plate, and The surface of the optical film on the same horizontal plane is on the side wall Surface, said positioning grooves are formed in said upper surface; and said double-sided upper surface of the optical film and the peripheral edge of the side wall of the glue on the positioning piece is fixed to the positioning slot.
A display, comprising: a backlight module and a display panel, the backlight module comprises a back plate, a plastic frame, a light guide plate, a double-sided tape and an optical film, the light guide plate and the optical film The plastic frame is mounted on the periphery of the back plate and surrounds the light guide plate and the optical film. The non-light-incident edge of the optical film is provided with a plurality of positioning pieces, and the positioning piece is parallel. The optical film is formed to extend away from the optical film, and the positioning frame is a rectangular groove, a triangular piece or a trapezoidal piece, and the positioning piece is a surface of the optical film and the optical film. The positioning groove has a shape corresponding to the positioning piece; the positioning groove of the plastic frame is located at a periphery of the optical film, and the positioning piece is held in the positioning groove; the display panel is disposed at the On the backlight module, the display panel and the optical film and the plastic frame are fixed by a double-sided tape; wherein the back plate includes a bottom plate and a side plate, and the backlight module further includes a reflective sheet. The reflective sheet is mounted on the bottom plate and the Between the light panels; the plastic frame includes a sidewall disposed adjacent to the side panel, and a surface at the same horizontal plane as the optical film is an upper surface of the sidewall, and the positioning groove is formed on the upper surface; The double-sided tape is attached to the upper surface of the side wall and the periphery of the optical film, and the positioning piece is fixed in the positioning groove.