News Column

"Hand-Held Electronic Device Having Rolled-Up Screen and Display Method Thereof" in Patent Application Approval Process

July 31, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- A patent application by the inventor Hwang, Richard (New Taipei City, TW), filed on January 6, 2014, was made available online on July 17, 2014, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application has not been assigned to a company or institution.

The following quote was obtained by the news editors from the background information supplied by the inventors: "The invention relates to a hand-held electronic device having a rolled-up screen, and more particularly to the hand-held electronic device having a rolled-up screen that is applicable to a cellular phone or a tablet computer, for which, while a flexible screen thereof is at an initial position by having the flexible screen to be reeled inside a casing via a reeling mechanism, the cellular phone or the tablet computer cart perform as a normal cellular phone or tablet computer, and for which, while the flexible screen is at an extended position by having the flexible screen to be pulled out of the casing, the cellular phone or the tablet computer can perform as a device having a broad display screen.

"Currently, the hand-held electronic device such as a cellular phone, a personal digital assistant, a GPS guide apparatus, a tablet computer and palm-size electronic play machine is usually equipped with a fixed-size display screen; in particular, a small-size display screen. Such an electronic device having a small-size screen is good in portability, but is ill in the limited display area, by which the image resolution and the applicability of a touch screen are problems. On the other hand, though the display screen can be enlarged so as to enhance the display area, the entertainment quality and the touch-control operability, yet the whole volume occupation is then too large to be in the field of portability or hand-holding. For example, the touch-control display screen for the smart phone has been increased from the 3'' screen, the 4'' screen, and finally to the 5'' screen. In spite that the display screen has been made broader so as to ensure a better screen displaying and the viewing quality, yet such a size for the hand-held electronic device is too much for the female customers. Definitely, for those female customers, the definition of the portable electronic device with an enlarged display screen might not be equal to the hand-held device anymore.

"Recently, various flexible screens have been developed, such as Korean Samsung's flexible AMOLED, Japan TDK's flexible OLED, Korean LG Display's plastic electronic paper screen, and Taiwan ITRI's touch AMOLED ultra-thin film screen and so on. Based on the modern technology, the thickness of the flexible touch screen can be down to 0.3 mm, and the flexible touch screen can be rolled into a cylinder with a radius at least less than 2.5 mm. Nevertheless, for the smart phones equipped with the flexible screens, the current development is still stayed in the stage of a prototype model with a flexible screen. Though the flexible screen is introduced to the smart phone, yet the concept of flexibility is at the device body itself not at the size of the display screen. Namely, though a larger-sized flexible screen can be applied to a smart phone, yet such a bigger size in the screen does only result in a cumbersome machine for the smart phone, which is definitely away from the original design concept in hand-holding and portability."

In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventor's summary information for this patent application: "Accordingly, it is the primary object of the present invention to provide a hand-held electronic device having a rolled-up screen and a corresponding display method for the hand-held electronic device, in both of which a reeling mechanism is introduced to elastically roll one portion of the flexible screen into the casing, but leaves another portion thereof to expose outside the casing as a small-size display screen. In the case that the flexible screen is pulled out of the casing so as to form an extended-size screen, a broader display screen can thus he obtained. Hence, advantages in having both a large-size screen for quality displaying and a small-size screen for hand-held convenience can be achieved by the hand-held electronic device having a rolled-up screen in accordance with the present invention.

"In the present invention, a preferred embodiment of the hand-held electronic device having a rolled-up screen includes:

"a casing;

"a flexible screen for displaying ages thereon;

"a reeling mechanism, connected with the flexible screen so as to reel elastically the flexible screen between an extended position and an initial position, a first area of the flexible screen being exposed outside the casing and a second area thereof being retrieved inside the casing while the flexible screen is at the initial position, both the first area and the second area being exposed outside the casing to form an integrated third area while the flexible screen is pulled to the extended position;

"a screen-detecting module for detecting whether the flexible screen is at the initial position or at the extended position and generating a detection signal accordingly; and

"an image-controlling module for controlling image-displaying on the flexible screen based on the detection signal, connected with the flexible screen and the screen-detecting module, controlling the flexible screen to display only on the first area while the screen-detecting module determines that the flexible screen is at the initial position, controlling the flexible screen to display on the third area while the screen-detecting module determines that the flexible screen is at the extended position.

"In one embodiment of the present invention, the casing further includes a main body, an extendable portion and at least a supportive member extending between the main body and the extendable portion, the extendable portion being adhered to one lateral side of the main body while the flexible screen is at the initial position, the extendable portion being pulled away from the lateral side and supported at the main body by the at least one supportive member while the flexible screen is at the extended position.

"In one embodiment of the present invention, the reeling mechanism is mounted inside the extendable portion, the extendable portion being adhered to the lateral side and the second area of the flexible screen being retrieved inside the extendable portion by the reeling mechanism while the flexible screen is at the initial position, the extendable portion being pulled away the lateral side so as to have the second area of the flexible screen to be extended between the lateral side and the extendable portion while the flexible screen is at the extended position.

"In one embodiment of the present invention, wherein the reeling mechanism further includes a reel spring for providing an elastic pulling force to retrieve the second area of flexible screen back into the extendable portion.

"In one embodiment of the present invention, the hand-held electronic device further includes a positioning mechanism for providing a positioning function to the flexible screen, such that the flexible screen is able to keep positions while facing no external forcing.

"In one embodiment of the present invention, the at least one supportive member has thereon a plurality of rig structures, the positioning mechanism further has a buckling mechanism located inside the main body at a position corresponding to the at least one supportive member, and the positioning function is obtained by having the buckling mechanism to pair each one of a plurality of the rig structures on the at least one supportive member.

"In one embodiment of the present invention, the hand-held device is a cellular phone and further includes:

"a processor module, having at least one processor;

"a communication module, electrically connected with the processor module, at least providing a communication function, further including an antenna;

"a human-machine module, electrically connected with the processor module, at least providing a user to operate the hand-held device and a data-transmission function, the communication module furthering including at least one of an I/O port, a control button, a microphone, a speaker and an image-capturing module;

"a power module, at least electrically connected with the processor module, providing power to the hand-held device, further having a battery; and

"a display module, electrically connected with the processor module and the flexible screen, further including image-displaying functions of the flexible screen controlled by the screen-detecting module and the image-controlling module.

"To achieve the aforesaid objects, an exemplary embodiment of a display method for the foregoing hand-held electronic device in accordance with the present invention includes the steps of:

"providing a hand-held electronic device having a rolled-up screen, wherein the hand-held electronic device includes: a casing, a flexible screen, and a reeling mechanism for reeling elastically the flexible screen between an extended position and an initial position, a first area of the flexible screen being exposed outside the casing and a second area thereof being retrieved inside the casing while the flexible screen is at the initial position, both the first area and the second area being exposed outside the casing to form an integrated third area while the flexible screen is pulled to the extended position;

"detecting whether the flexible screen is at the initial position or at the extended position and generating a detection signal accordingly;

"based on the detection signal, determining a size of an image for displaying, the size of the image being equal to a size of the first area while the detection signal is realized as that the flexible screen is at the initial position, the size of the image being equal to a size of the third area while the detection signal is realized as that the flexible screen is at the extended position; and

"controlling the flexible screen to display the image according to the size of the image, displaying the image only on the first area if the size of the image is equal to the size of the first area, displaying the image on the third area if the size of the image is equal to the size of the third area.

"In one embodiment of the present invention, the image on the third area while the display screen is at the extended position is simple an enlarged image of the same image on the first area while the display screen is at the initial position.

"All these objects are achieved by the hand-held electronic device having a rolled-up screen and the corresponding display method for the hand-held electronic device described below.

BRIEF DESCRIPTION OF THE DRAWINGS

"The present invention will now be specified with reference to its preferred embodiment illustrated in the drawings, in which:

"FIG. 1A is a schematic front view of a preferred embodiment of the hand-held electronic device in accordance with the present invention, in which the flexible screen is at an extended position;

"FIG. 1B is a bottom view of FIG. 1A;

"FIG. 2A is another front view of FIG. 1A, in which the flexible screen is at an initial position;

"FIG. 2B is a bottom view of FIG. 2A

"FIG. 3 shows schematically a preferred positioning mechanism for the hand-held electronic device in accordance with the present invention;

"FIG. 4 is a block diagram of a cellular phone as an exemplary embodiment of the hand-held electronic device in accordance with the present invention; and

"FIG. 5 is a flowchart of a preferred display method for the hand-held electronic device having a rolled-up screen in accordance with the present invention."

URL and more information on this patent application, see: Hwang, Richard. Hand-Held Electronic Device Having Rolled-Up Screen and Display Method Thereof. Filed January 6, 2014 and posted July 17, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=2022&p=41&f=G&l=50&d=PG01&S1=20140710.PD.&OS=PD/20140710&RS=PD/20140710

Keywords for this news article include: Patents.

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Source: Politics & Government Week


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