Liquid crystal writing device and driving method thereof
A writing device, liquid crystal technology, applied in instruments, static indicators, nonlinear optics, etc., can solve the problems of low lifespan and high power consumption, and achieve the effect of improving lifespan and reducing power consumption
Pending Publication Date: 2022-05-06
BOE TECH GRP CO LTD +2
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0005] In view of the above problems, the present application provides a liquid crystal writing device and its driving method, which can solve the technical problems of large power consumption and low service life of the liquid crystal writing device in the prior art
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[0052] The implementation of the application will be described in detail below in conjunction with the accompanying drawings and examples, so that the implementation process of how to apply technical means to solve technical problems and achieve corresponding technical effects in this application can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other under the premise of not conflicting, and the technical solutions formed are all within the protection scope of the present application. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
[0053]It should be understood that although the terms "first", "second", "third" etc. may be used to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or ...
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The invention provides a liquid crystal writing device and a driving method thereof. The liquid crystal writing device comprises at least one pixel electrode arranged on a first substrate, a common electrode arranged on a second substrate, at least one photosensitive switch and at least one backlight unit. When handwriting is erased, the corresponding light activated switches can be turned on through light emitted by the backlight unit, so that the driving circuit loads voltage to the corresponding pixel electrodes through the corresponding light activated switches, the texture state of the bistable liquid crystal layer between the first substrate and the second substrate is changed, and therefore light erasing of the handwriting is achieved; in the using process, the driving circuit does not need to be frequently started, the output voltage does not need to be frequently switched, the power consumption of the writing device in the using process can be reduced, and the service life of the product is prolonged.
Description
technical field [0001] The present application relates to the field of display technology, in particular to a liquid crystal writing device and a driving method thereof. Background technique [0002] Liquid crystal writing device is a simple device integrating writing and display, which can realize text writing and drawing, and is favored by the majority of users. [0003] The main component of the liquid crystal writing device is a liquid crystal writing board, and the existing liquid crystal writing board mainly uses a bistable liquid crystal layer (Cholesteric Liquid Crystals, CLC) to realize the effect of displaying handwriting. Bistable liquid crystals have two texture states: reflective state (Planar Texture, P state) and scattering state (Focal Conic Texture, FC state). Under a certain electric field or pressure, these two texture states can be converted to each other without The voltage can be maintained in one of the texture states, so the liquid crystal writing de...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G02F1/13G02F1/133G02F1/1333G02F1/1335G02F1/13357G02F1/1343G02F1/139
CPCG02F1/1391G02F1/13338G02F1/13306G02F1/134309G02F1/133512G02F1/133603G02F1/133615G02F1/1313
Inventor 薛静韩天洋武晓娟王智勇
Owner BOE TECH GRP CO LTD