Title:
SMART BLACKBOARD
Document Type and Number:
WIPO Patent Application WO/2021/179746
Kind Code:
A1
Abstract:
A smart blackboard, comprising a blackboard frame (1) and a blackboard main body (2), the blackboard main body (2) being mounted inside the blackboard frame (1); the blackboard main body (2) has a total of four structural layers which sequentially comprise, from outside to inside, a first anti-glare transparent structural layer (3), a second anti-ambient-light projection curtain layer (4), a third touch layer (5) and a fourth backplate structural layer (6); the first anti-glare transparent structural layer (3) is specifically a rough structure manufactured by using a spraying method or an etching method, and the second anti-ambient-light projection curtain layer (4) is specifically a black grid structure, a Fresnel structure or an anti-ambient-light film-coating structure; a light-transmitting glue layer (7) further needs to be coated between the first anti-glare transparent structural layer (3) and the second anti-ambient-light curtain layer (4), and the glue layer (7) completely fills gaps between the first anti-glare transparent structural layer (3) and the second anti-ambient-light curtain layer (4) and micro-structure recessed regions on the second anti-ambient-light curtain layer (4). The smart blackboard has an integrated design without any assembling gap, supports writing by chalks or fountain pens, supports touch interaction, and displays images clearly.
Inventors:
DONG SHI (CN)
Application Number:
PCT/CN2020/139816
Publication Date:
September 16, 2021
Filing Date:
December 28, 2020
Export Citation:
Assignee:
TOLYY OPTRONICS CO LTD (CN)
International Classes:
B32B33/00; B32B3/08; B32B7/12; B43L1/04
Foreign References:
| CN212046591U | 2020-12-01 | |||
| CN208558755U | 2019-03-01 | |||
| CN208796009U | 2019-04-26 | |||
| CN204472292U | 2015-07-15 | |||
| CN208460218U | 2019-02-01 | |||
| US20150346898A1 | 2015-12-03 | |||
| US20110310056A1 | 2011-12-22 |
Attorney, Agent or Firm:
SUZHOU XIANGYUAN PATENT AGENCY(GENERAL PARTNERSHIP) (CN)
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