fig4
![Towards the optimal design of optically clear adhesives for flexible display](https://image.oaes.cc/aba1d7d1-e39f-47a2-a965-ba75a8622584/ss4022.fig.4.jpg)
Figure 4. (A) The multiple neutral planes formation applying low modulus adhesives in integrated structure[90]. Reproduced with permission. Copyright © 2017 IOP Publishing; (B) The location of multiple neutral planes is controlled by a combination of high and low modulus adhesives in top and bottom sides[119]. Reproduced with permission. Copyright © 2020 KMEPS (CC BY NC); (C) The strain splitting of rigid layers (orange) occurs well with increasing thickness of adhesives through forming neutral multiple planes[40]. Reproduced with permission. Copyright © 2016 The Royal Society.