Method for manufacturing integral imaging device
In a method for manufacturing an integral imaging device, a layer of curable adhesive is first applied on a flexible substrate and half cured such that the curable adhesive is solidified but is capable of deforming under external forces. Then the curable adhesive is printed into a lenticular lens having a predetermined shape and size using a roll-to-roll processing device and fully cured such that the curable adhesive is capable of withstanding external forces to hold the predetermined shape and size. Last, a light emitting diode display is applied on the flexible substrate opposite to the lenticular lens such that an image plane of the light emitting diode display coincides with a focal plane of the lenticular lens.
1. A method for manufacturing an integral imaging device, the method comprising:
distributing a layer of curable adhesive to a flexible substrate;
half curing the curable adhesive layer such that the curable adhesive layer is solidified but is capable of deforming upon external forces;
printing the curable adhesive layer into a lenticular lens having a predetermined shape and size using a roll-to-roll processing device;
fully curing the curable adhesive layer such that the curable adhesive layer is capable of withstanding external forces to hold the predetermined shape and size; and
forming a light emitting diode display on the flexible substrate opposite to the lenticular lens such that an image plane of the light emitting diode display coincides with a focal plane of the lenticular lens.
2. The method of claim 1 , wherein the flexible substrate is a hot melt adhesive film.
3. The method of claim 1 , wherein the flexible substrate is selected from the group consisting of a polyethylene terephthalate film and a polyether sulfone film.
4. The method of claim 1 , wherein the curable adhesive layer is ultraviolet curable adhesive.
5. The method of claim 1 , wherein the roll-to-roll processing device comprise a roller having a characteristic structure, which is complementary to the lenticular lens, formed in a cylindrical surface thereof by precision carving.
6. The method of claim 1 , wherein the light emitting diode display is a polymer light emitting diode display and is formed by an ink-jet printing using macromolecular organic materials.
7. The method of claim 2 , wherein the light emitting diode display is an organic light emitting diode display and is formed by vacuum sputtering using small molecule organic materials.
8. The method of claim 1 , wherein the light emitting diode display comprises a thin-film transistor layer including an array of thin-film transistors, a transparent cathode layer including an array of cathodes and formed on the thin-film transistor layer, a color filter layer including an array of color filters and formed on the transparent cathode layer, and a reflective anode layer formed on the color filter layer, each thin-film transistor, each cathode, and each color filter are aligned with each other to form a pixel of the LED display, and each color filter includes a red part, a green part, and a blue part.
9. The method of claim 1 , further comprising:
pasting a flexible touch panel to the lenticular lens, opposite to the LED display.
10. The method of claim 9 , wherein the flexible touch panel is pasted using optical clear adhesive.
11. The method of claim 9 , further comprising:
pasting a protective film to the flexible touch panel, opposite to the lenticular lens.
12. The method of claim 11 , wherein the protective film is made of hot melt adhesive.