Liquid crystal handwriting board, writing pen and liquid crystal blackboard with partial erasing function
A technology of liquid crystal handwriting and function, which is applied in the field of liquid crystal writing board, writing pen and liquid crystal blackboard, and can solve the problem that the liquid crystal writing board cannot be partially erased
Active Publication Date: 2021-04-30
SHENZHEN WICUE OPTOELECTRONICS CO LTD
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Problems solved by technology
[0004] The main purpose of the present invention is to propose a liquid crystal handwriting board, writing pen and blackboard eraser with partial erasing function, aiming to solve the technical problem that the existing liquid crystal handwriting board cannot be partially erased
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[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, but cannot be construed as limitations to the present invention. Based on the embodiments in the present invention, those skilled in the art do not make creative work premise All other embodiments obtained below all belong to the protection scope of the present invention.
[0031] The present invention proposes a liquid crystal tablet with partial erasing function, such as figure 1 As shown, the liquid crystal handwriting panel includes a liquid crystal handwriting screen and a drive circuit 50;
[0032] The liquid crystal handwriting screen comprises a first substrate 10 and a...
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The invention provides a liquid crystal handwriting board with a partial erasing function, a matching writing pen, and a liquid crystal blackboard including a blackboard eraser. The liquid crystal handwriting board includes a liquid crystal handwriting screen and a driving circuit, wherein the driving circuit includes a The first driving unit for the first voltage, the second driving unit for generating the second voltage, and the selection switch for controlling the opening and closing of the two driving units; meanwhile, the present invention also arranges elastic microspheres in the liquid crystal layer Increase the flexibility of the LCD handwriting screen. When the selection switch is connected with the first drive unit, the first voltage it provides can erase all the writing in the liquid crystal handwriting screen; Pressing on the screen can erase the handwriting on the pressing part. The invention realizes the partial erasing function on the basis of erasing the handwriting on the liquid crystal handwriting board with one key, and is more convenient to use.
Description
technical field [0001] The invention relates to the technical field of teaching aids, in particular to a liquid crystal handwriting board, a writing pen and a liquid crystal blackboard with a partial erasing function. Background technique [0002] The blackboard is an indispensable teaching tool in the teaching process. Because traditional blackboards need to be written and erased with chalk, dust is easily generated, which has adverse effects on the health of users. [0003] Now there is a liquid crystal tablet on the market, users can write with hard objects, but due to technical limitations, it can only erase all handwriting with one key, and cannot achieve partial erasing, so it is limited in wide use. Contents of the invention [0004] The main purpose of the present invention is to propose a liquid crystal handwriting board, a writing pen and a blackboard eraser with a partial erasing function, aiming at solving the technical problem that the existing liquid crystal...
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IPC IPC(8): G06F3/041
CPCG06F3/0416
Inventor 李风华
Owner SHENZHEN WICUE OPTOELECTRONICS CO LTD