Layer-specific energy distribution delamination

A method of removing a touch sensor layer from a laminated display stack of a portable mobile device, the method comprising:

• obtaining the laminated display stack including the touch sensor layer having a first surface that extends substantially over the touch sensor layer, a display layer having a second surface that extends substantially over the display layer, and a bonding layer that bonds the touch sensor layer to the display layer and extends substantially throughout the area of overlap of the first and second surfaces;
• applying energy to a first portion of the bonding layer to weaken the bonding layer at the first portion;
• applying a heat sink to the laminated display stack to remove thermal energy from one or more of the touch sensor layer or the display layer;
• and
• breaking the weakened bonding layer at the first portion.

A method of delaminating a laminated display stack, the method comprising:

• obtaining the laminated display stack including a touch sensor layer having a first surface that extends substantially over the touch sensor layer, a display layer having a second surface that extends substantially over the display layer, and a bonding layer that bonds the touch sensor layer to the display layer and extends substantially throughout the area of overlap of the first and second surfaces;
• periodically applying energy to a first portion of the bonding layer to weaken the bonding layer by switching between an on and off cycle, wherein applying the energy results in the display layer remaining below a temperature that will damage the display layer;
• and
• breaking the weakened bonding layer at the first portion.

A method of delaminating a laminated display stack, the method comprising:

• obtaining the laminated display stack including the touch sensor layer having a first surface that extends substantially over the touch sensor layer, a display layer having a second surface that extends substantially over the display layer, and a bonding layer that bonds the touch sensor layer to the display layer and extends substantially throughout the area of overlap of the first and second surfaces;
• applying energy to a first portion of the bonding layer to weaken the bonding layer by focusing an energy transmission through the laminated display stack such that the energy transmission is less concentrated in each of the touch sensor and display layers than in the bonding layer;
• and
• breaking the weakened bonding layer at the first portion.