Patent Application
20220030146
This application claims the priority benefit of Taiwanese Invention Application Serial Number 109124611, filed on Jul. 21, 2020, which is incorporated herein by reference.
The present invention relates to a polarizer, and more particularly to a polarizer for electronic device and an electronic device with the same.
In recent years, various electronic devices ,such as personal computers, mobile communication devices and wearable devices have been widely used, and input elements or/and output elements, such as displays, touch panels, sensors and camera modules assembled with more than one on electronic devices in a limited space have become the focus of related technical development. At present, the structural design of electronic devices with displays integrated with camera modules has become the mainstream in the market. As shown in the schematic top view of
With the development of OLED display technology, the feasibility of assembling camera modules under the display and increasing the display ratio of the display has been proposed in related technologies.
Therefore, there is a need for a solution that can integrate a camera module into a display module and hide the camera lens of the camera module from outside of electronic device.
An object of the present invention is to provide a polarizer suitable for a electronic device integrated a camera module with a display, which enables the electronic device to display in full-screen and hide the camera lens of the camera module from outside of the electronic device and provide both excellent quality of photography and display. The present invention discloses a polarizer for electronic devices, comprising a first protective film, a polarizing film and a second protective film. Wherein, the polarizing film is arranged between the first protective film and the second protective film, and the polarizing film comprises a first polarizing zone and a second polarizing zone, wherein the polarization degree of the first polarizing zone is greater than 99.9% and less than 100%, and the light transmittance thereof is ranging between 40% and 45%; the polarization degree of the second polarization zone is not less than 90% and not more than 99.9%, preferably not less than 91% and not more than 98%, and the light transmittance thereof is ranging between 45% and 48%.
A further object of the present invention is to provide an electronic device, comprising a display element, the display element further comprises a display area, a polarizer arranged on the display element and a camera module integrated into the display element, wherein the display area comprises a functional zone of the camera module, and the polarizer comprises a first polarization zone and a second polarization zone, wherein the polarization and light transmittance of the first polarization zone and the second polarization zone are different, and the second polarization zone is located on the functional zone of the camera module.
In a preferred embodiment of electronic device of the present invention, the second polarization zone can substantially completely cover the functional zone of the camera module.
In a preferred embodiment of electronic device of the present invention, as mentioned above, the polarization degree of the second functional zone of the polarizer is not less than 90% and not more than 99.9%, preferably not less than 91% and not more than 98%, and the light transmittance thereof is between 45% and 48%.
In a preferred embodiment of electronic device of the present invention, the first polarization zone covers the display area excluding the functional zone of the camera module, wherein the polarization degree of the first polarization zone of the polarizer is greater than 99.9% and less than 100%, and the light transmittance thereof is between 40% and 45%.
The above and other aspects of the invention will become better understood with regard to the following detailed description of the preferred but non-limiting embodiment(s). These and other aspects of the invention will become apparent from the following description of the presently preferred embodiments. The detailed description is merely illustrative of the invention and does not limit the scope of the invention, which is defined by the appended claims and equivalents thereof. As would be obvious to one skilled in the art, many variations and modifications of the invention may be affected without departing from the spirit and scope of the novel concepts of the disclosure.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details.
It is apparent that departures from specific designs and methods described and shown will suggest themselves to those skilled in the art and may be used without departing from the spirit and scope of the invention. The present invention is not restricted to the particular constructions described and illustrated, but should be construed to cohere with all modifications that may fall within the scope of the appended claims.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Generally, the nomenclature used herein and the laboratory procedures are well known and commonly employed in the art. Conventional methods are used for these procedures, such as those provided in the art and various general references. Where a term is provided in the singular, the inventors also contemplate the plural of that term. The nomenclature used herein and the laboratory procedures described below are those well-known and commonly employed in the art.
The term “light transmittance” used herein refers to the ratio of the intensity of the transmitted visible light through the polarizer to the original incident visible light. The term “polarization degree” refers to, after the light passes through the polarizer, the ratio of the intensity difference of the visible light parallel to the absorption axis and the visible light perpendicular to the absorption axis to the intensity of the transmitted visible light.
The following figures illustrate the present polarizer for electronic devices. As shown in
In an embodiment of the present invention, the suitable polarizing film 422 can be a polarizer commonly used in the related art, such as, but not limited to an iodine-based polarizer, a dye-based polarizer, a polyvinylidene-based polarizer or the combinations thereof.
In an embodiment of the present invention, the first protective film 421 and the second protective film 423 are used to protect and support the polarizing film 422. Therefore, a suitable material can be a film with good mechanical strength and light transmittance, such as, but not limited to polymethylmethacrylate (PMMA), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), triacetyl cellulose (TAC), polyimide (PI), polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVA), polyvinyl chloride (PVC) or cyclic olefin copolymer (COC). The polarizer 42 can further comprises a functional coating film to provide the surface characteristics required by the electronic device, wherein the functional coating film can be a scratch-resistant coating film, an anti-reflection film, an anti-glare film, an anti-reflection-anti-glare film, an oleophobic film or combinations thereof.
In another embodiment of the present invention, the second protective film 423 can be a functional optical film, for example, a retardation film.
The suitable polarizer for an electronic device is a iodine-based polarizer, a dye-based polarizer or a polyvinylidene-based polarizer with the polarization degree of greater than 99.9% and less than 100%, and the light transmittance thereof is ranging between 40% and 50%. The method of preparing the present polarizer can be performed by partially depolarizing the polarizer suitable for electronic devices, such as light-exposing treatment or chemical treatment.
The specific light transmittance of second polarization zone 42b of the polarizer 42 provides the effective photosensitivity of the corresponding functional zone of the camera module 66, which further enable the camera module 64a or 64b to complete the photographic action, and the high polarization degree of first polarization zone 42a enable the corresponding display area 65 excluding functional zone of the camera module 66 to obtain an excellent display quality. In the assembly of electronic device 600a, the camera module 64a including the lens 61a is integrated and disposed under the display element 63a, when the camera module 64a that correspond with the second polarization zone 24b is not activated, the specific polarization degree of second polarization zone 42b enables this area to obtain an excellent display quality, and also makes the camera lens 61 hidden from the outside of electronic device 600a.
In an embodiment of the present invention, the display element 11 can be the one known in the related art, such as, but not limited to an LED display element, an LCD display element, an OLED display element or combinations thereof.
According to the present polarizer suitable for electronic devices integrating a camera module into display, comprising a first polarization zone and a second polarization zone with different polarization degrees and transmittances, which achieves the electronic device to display in full-screen, can hide the camera lens from the outside of electronic device and provide both excellent quality of photography and display when the polarizer is applied to an electronic device.
The detailed description is merely illustrative of the invention and does not limit the scope of the invention, which is defined by the appended claims and equivalents thereof. As would be obvious to one skilled in the art, many variations and modifications of the invention may be affected without departing from the spirit and scope of the novel concepts of the disclosure.
