Capacitive touch teaching projection screen
CN224696231UActive Publication Date: 2026-08-28WENZHOU HONGDA NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202521486903.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-16
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-07-16
AI Technical Summary
Technical Problem
[0003]投影仪的投影光线经幕布反射进入人眼，幕布本质是被动式光学反射面，仅负责反射投影机光线，不具有触摸功能，无法直接在教学过程中在幕布表面书写、点击、缩放等，不满足教学演示需求，教学中使用起来不方便
Benefits of technology
[0025]在投影幕布内设置电容触摸屏系统，通过检测触控点引起的电容变化，实现多点触控，满足教学需求，传统电容触摸屏采用ITO膜，ITO膜在频繁升降、风吹晃动、触碰晃动中，容易损坏，影响其使用寿命，故本发明采用铝制电极，因其具有柔性好，不易折断的特点，本专利申请将其用于投影幕布，以适应投影幕布的柔性特性，使其具有成本低、寿命长、耐潮湿等诸多优点，并且为了限制投影幕布的风吹晃动、碰触晃动，又保证结构简单、成本低、寿命长，故采用充气条作为支撑，充气条具有结构简单、成本低、寿命长、便于配合卷起收放的诸多优点，特别是消除了很多碰触晃动，使触摸操作变得稳定、顺畅、易操作，铝制电极、充气条，共同作为基础，解决了投影幕布碰触晃动的问题，保证了寿命，以及触摸操作稳定、顺畅、易操作，使易用的具有触摸功能的投影幕布，变得可以实施。
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Figure CN224696231U_ABST
Abstract
The application relates to the optical field, in particular to a projection curtain. The capacitive touch teaching projection curtain comprises a projection curtain and a capacitive touch screen system; the capacitive touch screen system comprises a touch film; the touch film has an isolation layer as a base material and two electrode arrays arranged on both sides of the isolation layer, namely a first electrode array and a second electrode array; the electrode arrays are arrays composed of aluminum electrodes; the first electrode array comprises a plurality of warp electrode strips, and block-shaped aluminum plating layers are arranged on the warp electrode strips at intervals, the block-shaped aluminum plating layers serving as warp electrode units; the second electrode array comprises a plurality of weft electrode strips, and block-shaped aluminum plating layers are arranged on the weft electrode strips at intervals, the block-shaped aluminum plating layers serving as weft electrode units. The soft projection curtain realizes multi-point touch control and meets the teaching requirements.
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