Patent Application
20180188443
The present disclosure relates to the field of optical design and optical test technology, and more particularly, to a device, a system, a backlight module and a test method for simulating a light guide plate.
At present, optical design and test evaluation method of a light guide plate in the related art includes the following steps: arranging dot-patterns through optical design software (such as math cad), and then producing a light guide plate with the dot-patterns through printing, rolling, injection molding; assembling the light guide plate and other components (such as a film, a light bar, a plastic frame, a backplane, etc.) into a backlight module; finally, performing optical testing and evaluation on the assembled backlight module. The drawbacks of the existing optical guide plate design and test evaluation system and method are that the periods of design and test evaluation of the light guide plate are too long and the costs are high due to the need to produce a light guide plate with dot-patterns.
Electroactive Polymer (EAP) is a kind of new intelligent polymer material which can produce various forms of mechanical response such as telescopic, bending, tightening or expansion through changes of the internal structure of the material under an applied electric field. According to the actuation mechanism of the electroactive polymer, it can be divided into two types: an electronic type EAP (Electronic EAP) and an ion type EAP (Ionic EAP). As its excellent electrical actuating performance, EAP is mainly used for micro-sensors, sensors and bionic devices.
It should be noted that, information disclosed in the above background portion is provided only for better understanding of the background of the present disclosure, and thus it may contain information that does not form the prior art known by those ordinary skilled in the art.
Exemplary embodiments of the present disclosure provide a device, a system, a backlight module and a test method for simulating a light guide plate.
According to a first aspect of the present disclosure, there is provided a device for simulating a light guide plate, comprising:
a light guide substrate layer; and
an electroactive polymer layer,
wherein the electroactive polymer layer is formed on the light guide substrate layer and is configured to produce a deformation according to a layout signal of dot-patterns to simulate the dot-patterns.
According to a second aspect of the present disclosure, there is provided a backlight module, comprising the above described device for simulating a light guide plate, a back cover, a light source, a reflective film and an optical film, wherein, the light source is provided on a side wall of the back cover, the reflective film, the device for simulating a light guide plate and the optical film are sequentially laminated on bottom of the back cover, and the reflective film is provided below the electroactive polymer layer.
According to a third aspect of the present disclosure, there is provided a system for simulating a light guide plate, comprising the above described backlight module, and a signal generation apparatus configured to generate a layout signal of dot-patterns, and supply the layout signal of dot-patterns to the backlight module.
According to a fourth aspect of the present disclosure, there is provided a test method of the above described device for simulating a light guide plate, comprising:
generating the layout signal of dot-patterns;
controlling the electroactive polymer layer to be deformed according to the layout signal of dot-patterns, and
performing optical test on the device for simulating a light guide plate.
In order to more clearly illustrate the technical solutions in embodiments of the present disclosure or the related art, the following drawings, which are to be used in the description of the embodiments or the prior art, will be briefly described below. Apparently, the drawings in the following description are only for some embodiments of the disclosure, and other drawings may be obtained by those skilled in the art without making creative effort.
In order to make the objective, technical solutions and advantages of the embodiments of the present disclosure to be more apparent, the technical solutions in the embodiments of the present disclosure will be clearly and thoroughly described in combination with the drawings. Apparently, the described embodiments are merely part of the embodiments and not all of the embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative effort are within the protection scope of the present disclosure.
In the description of the present disclosure, it is to be noted that the azimuth or positional relationship indicated by the terms “upper”, “lower”, “top”, “bottom” and the like is based on the azimuth or positional relationship shown in the drawings, is only for convenience in describing the present disclosure and for simplifying description, and is not intended or implied that the means or elements referred to must have a particular orientation and be constructed and operated in a particular orientation and therefore can not be construed as limiting the disclosure.
In addition, in the description of the present disclosure, unless otherwise indicated, the meaning of “a plurality of” is two or more.
As shown in
It is to be noted that the light guide substrate layer 1 according to the present embodiment can be made of polymethyl methacrylate (PMMA) or polycarbonate (PC). The electroactive polymer layer 2 according to the present embodiment may be an electron type EAP or the like.
As shown in
As shown in
Further, the backlight module according to an embodiment of the present disclosure may further comprise a plastic frame for encapsulating the backlight module.
According to an embodiment of the present disclosure, the optical film 6 may further comprise a diffusion film and a prism film, and the prism film is provided on the diffusion film. The diffusion film may contain a plurality of particles to diffuse the light from the light guide substrate layer 1 and cause the light to propagate toward the prism film. Therefore, a viewing angle can be broaden and the dot-patterns simulated by the EAP layer 2 can be concealed. The prism film can cause the diffused light to be concentrated in a certain angle.
The light emitting process of the backlight module shown in
As shown in
As shown in
In step S2, the deformation of the EAP layer 2 is controlled according to the layout signal of dot-patterns. Since the mechanical energy and the electric energy in the EAP can be converted to each other by the electrostatic field. In this step, the electric field corresponding to the layout signal of dot-patterns can be generated according to the layout signal of dot-patterns.
The internal structure of the electroactive polymer can be changed due to the action of the external electric field, resulting in deformation (e.g., stretching, bending, tightening, expansion, etc.). The electric field is a typical vector field, the deformation of the electroactive polymer can be accurately controlled by controlling the electric field strength (e.g., distribution, size and direction of the vector, etc.). Thus, the number, size and position of each dot-pattern can be accurately simulated.
In step S3, the apparatus 10 for simulating a light guide plate is subjected to an optical test. The test now is the same as that of the guide plate in the related art, and will not be described here. In the step S3, if the test result does not reach a predetermined condition, it is selectable to repeat steps 51 to S3 until the test result satisfies the predetermined condition.
In view of the above, the device, the system and the backlight module and the test method for simulating a light guide plate according to embodiments of the present disclosure can simulate the distribution of dot patterns of the light guide plate in real time without producing the light guide plate, thereby the periods of the design and test and evaluation of a light guide plate can be shorten, and the cost can be saved.
The above contents are only the embodiments of the present disclosure. However, the scope of the present invention is not limited thereto. Within the technology scope disclosed in the present disclosure, any change or substitution that can easily be contemplated by those skilled in the art should be covered within the protection scope of the present disclosure. Accordingly, the protection scope of the present disclosure should be based on the protection scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201610231300.X | Apr 2016 | CN | national |
The present application is based on International Application No. PCT/CN2017/070166, filed on Jan. 4, 2017, which is based upon and claims priority to Chinese Patent Application No. 201610231300.X, filed Apr. 14, 2016, and the entire contents thereof are incorporated herein by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2017/070166 | 1/4/2017 | WO | 00 |
