Flexible display device

Abstract

The present invention provides a flexible display device including: a display module; an accommodating casing defined with a hollow cavity, an open channel defined in the accommodating casing, a chain lock disposed in the open channel, a resilient member, a first roller, and a second roller disposed in the hollow cavity, the resilient member forming a pre-pulling on the display module; the chain lock disassembling the display module into a first assembly and a second assembly to be rolled up on the first roller and the second roller respectively, and configured to combine the first assembly and the second assembly into the display module.

Description

FIELD OF INVENTION[0001]The present invention relates to a field of display technologies, especially a flexible display device.BACKGROUND OF INVENTION[0002]Because a flexible display panel can be manufactured into various forms, it is favored by the application market. At the same time, as people's demands for visual enjoyment increase, larger display screens have become the development trend of the future market. However, the oversized display panel disadvantages carrying and storing. At present, the flexible display is converted between large and small screens by adopting an outward or inward folding form or a rolling form. However, if a curling radius is smaller or a diameter of a roller is smaller, failure such as separation of films and cracks will occur on the display panel due to excessive stress on a portion thereof. Therefore, employing bending resistance capability of the flexible display panel to reduce the stress on the folded / rolled up flexible display for storage in a ...

AI Technical Summary

Benefits of technology

[0004]The present invention provides a flexible display device that is able to solve the technical issue of the conventional flexible display device that bending stress on the rolled up / folded flexible display panel is excessive and causes risks of separation of films and cracks, and an occupied space is large.

[0034]Advantages of the present invention are as follows. Compared to the conventional flexible display device, the flexible display device provided by the present invention, by changing a rolling way of a single roller, divides the display module into different assemblies to be rolled up respectively. A plurality of rollers staggered left and right are disposed in the accommodating casing such that a display panel with a greater area is rolled up in the accommodating casing. A number of the rollers is an even number such that the display panel is disposed in the accommodating casing in a S-shape rolling way to form a multi-layer hybrid rolling mode. Such design drastically offsets pulling stress and compressive stress on the assembly, reduces failure such as separation of films, cracks, and bright lines and dark lines due to excessive stress on a portion of the assembly, and therefore achieve a smaller rolling radius. Furthermore, a length of the protective lid is far greater than a length of the display panel, During pulling, the display panel is not forced, and actually the protective lid is dragged by the spiral spring. Moreover, a pre-tension force always exists on the protective lid such that a non-flatness issue of the curled display panel is prevented and surface flatness and hardness are enhanced.

Problems solved by technology

However, the oversized display panel disadvantages carrying and storing.

However, if a curling radius is smaller or a diameter of a roller is smaller, failure such as separation of films and cracks will occur on the display panel due to excessive stress on a portion thereof.

Therefore, employing bending resistance capability of the flexible display panel to reduce the stress on the folded / rolled up flexible display for storage in a smaller space has become an issue to be solved.

Therefore, the prior art has defects and needs to be improved urgently.

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