Variable-sized screen

• US 20070146243A1
• Filed: 12/27/2005
• Published: 06/28/2007
• Est. Priority Date: 12/27/2005
• Status: Active Grant

• Current Assignee: Lite-On Technology Corporation
• Original Assignee: Lite-On Technology Corporation
• Inventors: Ou Yang, Liang
• Granted Patent: US 7,440,265 B2
• Time in Patent Office: Days
• US Class Current: 345/76
• CPC Class Codes: G06F 1/1601 Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64
• CPC Class Codes: G06F 1/1652 the display being flexible, e.g. mimicking a sheet of paper, or rollable

Abstract

A variable-sized screen includes a support, at least one scrolling device and a flexible display. The support has a fixing frame and a movable frame, which are retractably connected. The scrolling device and the flexible display are assembled on the support. The flexible display is wrapped around the support, and the size of the flexible display is variable due to displacement of the support. When the support changes size through a retracted movement of the movable frame and the fixing frame, the flexible display also changes size correspondingly and the size of the screen becomes variable. Therefore, the dimensions of the screen and electronic products are not limited, and the display device has the advantages of a big screen yet is still portable and convenient for a user.

Claims

1. A variable-sized screen, comprising:

a support having a fixing frame and at least one movable frame connected retractably to the fixing frame;

at least one scrolling device arranged inside the support; and

a flexible display assembled in the support and wrapped around the scrolling device, so a size of the flexible display can be altered due to displacement of the support.

2. The variable-sized screen as claimed in claim 1, wherein the fixing frame of the support has a pair of first racks, which are opposite to each other and are hollow;

the movable frame of the support has a pair of second racks, which are opposite to each other and are retractably received inside the first racks individually.

3. The variable-sized screen as claimed in claim 1, wherein the number of the movable frame is two, and these two movable frames are assembled to two lateral sides of the fixing frame.

4. The variable-sized screen as claimed in claim 1, wherein the movable frame includes a resilient tenon, which has an orientation surface;

whereby the orientation surface of the resilient tenon retains against an end of the fixing frame while the movable frame opens and expands.

5. The variable-sized screen as claimed in claim 1, further including a casing, wherein the casing has a fixing cover and a movable cover corresponding to the fixing frame and the movable frame of the support respectively.

6. The variable-sized screen as claimed in claim 1, wherein the scrolling device is connected to the movable frame of the support.

7. The variable-sized screen as claimed in claim 1, wherein the flexible display is an organic light-emitting display, which includes a plurality of organic light-emitting diodes (OLEDs).

8. The variable-sized screen as claimed in claim 1, wherein the flexible display is an electronic paper.

9. The variable-sized screen as claimed in claim 1, wherein the flexible display is disposed in front of the scrolling device, the flexible display has an end wrapped around the scrolling device and connected to an end lever;

the end lever is connected to an end of a resilient member, and the resilient member has another end connected to the fixing frame.

10. The variable-sized screen as claimed in claim 1, wherein the movable frame is a manually adjustable device.

11. The variable-sized screen as claimed in claim 1, further including a driving device assembled to the movable frame.

12. The variable-sized screen as claimed in claim 11, wherein the driving device includes a motor, a spur gear connected with the motor, and a gear rack assembled to the movable frame and engaged with the spur gear.

13. The variable-sized screen as claimed in claim 11, wherein the driving device includes a motor, a worm gear connected with the motor, and a worm shaft assembled to the movable frame and engaged with the worm gear.

14. The variable-sized screen as claimed in claim 11, wherein the driving device includes a hydraulic cylinder connected to the movable frame.