Patent Application
20170108633
Embodiments of the present disclosure relate to display technology, more specifically, to a light guide plate, a back plate, an edge-lit type backlight module and a display device.
A display device includes an edge-lit type backlight module and a display panel which is disposed on the light exiting surface side of the edge-lit type backlight module. Specifically, as illustrated in
In order to better support the display panel, protect the light bar 2′ and provide an appropriate position for the attachment of the reflective adhesive 3′, as illustrated in
However, the inventors found that since the bending portion 42′ usually has a relatively long length (e.g., 3.5 mm˜5.3 mm) and the distance between the bending portion 42′ and the body portion 41′ is relatively small (e.g., 0.86 mm˜1.32 mm), it is difficult to perform the processes of attaching the reflective tape 3′ and the light bar 2′, and therefore poor attachment is obtained between the reflective tape 3′ and the light bar 2′, thereby influencing the subsequent assembly of the light guide plate and the optical film and seriously impacting the performance of the edge-lit type backlight module.
One of objects of the present disclosure is to provide a light guide plate, a back plate, an edge-lit type backlight module and a display device which can reduce the difficulty of assembling the edge-lit type backlight module and thus increase its performance.
A first aspect of the present disclosure is to provide a light guide plate which comprises a main body and an extending part, wherein the extending part is disposed on a sidewall of the main body and extending outwardly, and the extending part and the sidewall of the main body define a space for accommodating a backlight source.
A second aspect of the present disclosure is to provide a back plate which matches with the above light guide plate, wherein the back plate comprises a bottom plate and a sidewall extending upwardly and vertically from an edge of the bottom plate.
A third aspect of the present disclosure is to provide an edge-lit type backlight module, which comprises a backlight source, an optical film, the above light guide plate and the above back plate, wherein the backlight source is disposed on the bottom plate of the back plate, the light guide plate and the optical film are stacked on the bottom plate in this order, and the backlight source is disposed in the space defined by the extending part of the light guide plate and the sidewall of the main body
A fourth aspect of the present disclosure is to provide a display device which comprises the above edge-lit type backlight module.
In order to clearly illustrate the technical solution of the embodiments of the disclosure, the drawings of the embodiments will be briefly described in the following; it is obvious that the described drawings are only related to some embodiments of the disclosure and thus are not limitative of the disclosure.
In order to make objects, technical details and advantages of the embodiments of the disclosure apparent, the technical solutions of the embodiments will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the disclosure. Apparently, the described embodiments are just a part but not all of the embodiments of the disclosure. Based on the described embodiments herein, those skilled in the art can obtain other embodiment(s), without any inventive work, which should be within the scope of the disclosure.
An embodiment of the present disclosure provides a light guide plate which is suitable for an edge-lit type backlight module. As illustrated in
As illustrated in
In the embodiment of the present disclosure, the main body 11 and the extending part 12 are formed integrally. The light guide plate 1 may be made of polycarbonate (PC) or polymethyl methacrylate (PMMA). In other embodiments of the present disclosure, the main body 11 and the extending part 12 may be made from different materials and then bonded with each other.
100201 As illustrated in
In the embodiment of the present disclosure, as illustrated in
It is noted that the embodiments of the present disclosure do not define the surface of the extending part 12 of the light guide plate 1 close to the backlight source 2. As illustrated in
Alternatively, as illustrated in
Alternatively, as described above, in the embodiment of the present disclosure, the material of the light guide plate 1 is PC or PMMA. Since PC or PMMA both have high rigidity, the thickness of the extending part 12 of the light guide plate 1 in the embodiments of the present disclosure may be equal to or less than the thickness of the back plate. For example, where the thickness of the back plate is approximately 0.37 mm, the thickness D of the extending part 12 is 0.35 mm˜0.4 mm, e.g., approximately 0.37 mm, so as to make the size of the edge-lit type backlight module comprising the light guide plate 1 be matched with the prior the back plate. As a result, no change is required to the size of the remaining components of the display device.
It is understood that the person skilled in the art may set the width W and the thickness D of the extending part 12 of the light guide plate 1 as required, for example, according to the size, model and the like of the display device, thus, the embodiments of the present disclosure do not define the width W and the thickness D.
The embodiments of the present disclosure provide a light guide plate 1 as described above. Since the light guide plate 1 comprises a extending part 12 which defines an accommodating space for accommodating a backlight source 2 in combination with the sidewall of the main body 11, the backlight source 2 may be disposed in the accommodating space when the light guide plate 1 is applied in the edge-lit type backlight module, and thus the extending part 12 can serve to support a display panel, protect the backlight source 2, and provide an appropriate position for the attachment of the reflective adhesive tape 3. As a result, no bending portion is required for the back plate 4 of the edge-lit type backlight module, so that the difficulty of assembling the edge-lit type backlight module and poor attachment in assembling various components of the edge-lit type backlight module can be reduced, thereby effectively increasing the performance of the edge-lit type backlight module.
Additionally, it is difficult to disassemble a defective product in the disassembly process for repairing it. And the bending portion 42′ of the back plate 1′ is easy to be deformed, which will affect the performance of the edge-lit type backlight module and thus impact the display effect of the display device. Due to the structure of the light guide plate 1 as described above in the embodiments of the present disclosure, no bending portion is required for the back plate 4 of the edge-lit type backlight module. As a result, it is easy to disassemble the defective product and the back plate 4 is not apt to be deformed. Therefore, the disassembly will not impact the performance of the edge-lit type backlight module, and a good display effect can be guaranteed.
Another embodiment of the present disclosure provides a back plate that matches the light guide plate as described above. As illustrated in
Yet another embodiment of the present disclosure provides an edge-lit type backlight module, as illustrated in
As illustrated in
In the embodiments of the present disclosure, the surface of the reflective adhesive tape 3 far away from the light guide plate 1 is flush with the surface of the optical film 5 far away from the light guide plate 1, so that the light exiting surface of the edge-lit type backlight module is configured as a flat surface and thus the display panel can be better supported. For example, where the surface of the extending part 12 of the light guide plate 1 far away from the backlight source 2 is flush with the light exiting surface of the main body 11, and the thickness of the reflective adhesive tape 3 and the optical film 5 are equal to each other, the surface of the reflective adhesive tape 3 far away from the light guide plate 1 and the surface of the optical film 5 far away from the light guide plate 1 are flush with each other. It is understood that the person skilled in the art may make the surface of the reflective adhesive tape 3 far away from the light guide plate 1 flush with the surface of the optical film 5 far away from the light guide plate by other means, and there is no limitations to the specific configuration.
Alternatively, as illustrated in
Additionally, as illustrated in
An exemplary procedure of assembling the edge-lit type backlight module of
Additionally, still another embodiment of the present disclosure further provides a display device comprising the edge-lit type backlight module as described above. The display device may be LCD panels, E-paper, OLED (Organic Light Emitting Diode) panels, LCD TVs, LCDs, digital photo frames, mobile phones, tablet computer and any other product or component having a display function. Due to the edge-lit type backlight module is included in the display device, the manufacture process for it is also become easier and a better display effect can be obtained. In at least some of the embodiments, the display device may further comprise a display panel disposed on the light exiting side of the edge-lit type backlight module. The structure of the display panel may be arranged with reference to the existing technology, which is not elaborated here.
What is described above is related to the illustrative embodiments of the disclosure only and not limitative to the scope of the disclosure; the scopes of the disclosure are defined by the accompanying claims.
The present application claims the priority of Chinese patent application No. 201510693008.5 filed on Oct. 19, 2015, the disclosure of which is incorporated herein by reference in its entirety.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201510693008.5 | Oct 2015 | CN | national |
