Display device including a lens array and method of manufacturing the same
A display device includes: a first substrate; thin-film transistors disposed on a first surface of the first substrate; light emitting elements connected to corresponding ones of the thin-film transistors, respectively, and disposed on the thin-film transistors; and a lens array including lenses disposed on a second surface of the first substrate opposite to the first surface of the first substrate, wherein the light emitting elements emit light toward the first substrate.
1. A method of manufacturing a display device, the method comprising:
irradiating a laser to a predetermined position of a lens array substrate;
forming a first substrate on a first surface of the lens array substrate;
forming thin-film transistors and light emitting elements on a first surface of the first substrate; and
forming a lens array by etching a second surface opposite to the first surface of the lens array substrate after the forming of the thin-film transistors and the light emitting elements on the first surface of the first substrate, wherein the lens array comprises lenses.
2. The method of claim 1 ; wherein physical properties of the lens array substrate at the predetermined position are different from physical properties of the lens array substrate in an area of the lens array substrate other than the predetermined position.
3. The method of claim 2 , wherein the lens array substrate is made of glass.
4. The method of claim 3 , wherein the lens array substrate includes a SiO bond at the predetermined position and includes a SiO 2 bond in the area of the lens array substrate other than the predetermined position.
5. The method of claim 1 , wherein the irradiating of the laser to the lens array substrate comprises irradiating the laser along first lens lines extending in a first direction.
6. The method of claim 5 , wherein a gap between adjacent first lens lines in a second direction intersecting the first direction is equal to a pitch of each lens in the second direction.
7. The method of claim 5 , wherein at least one of the first lens lines corresponds to a boundary between adjacent lenses.
8. The method of claim 5 , wherein each of the lenses is a lenticular lens extending in the first direction.
9. A method of manufacturing a display device, the method comprising:
irradiating a laser to a predetermined position of a lens array substrate;
forming a first substrate on a first surface of the lens array substrate;
forming thin-film transistors and light emitting elements on a first surface of the first substrate; and
forming a lens array by etching a second surface opposite to the first surface of the lens array substrate, wherein the lens array comprises lenses, wherein the irradiating of the laser to the lens array substrate comprises irradiating the laser along first lens lines having a circular or elliptical shape.
10. The method of claim 1 , wherein each of the lenses has a half-cylindrical shape or a hemispherical shape.
11. The method of claim 1 , wherein the forming of the lens array by etching the second surface of the lens array substrate comprises wet-etching the second surface of the lens array substrate by using hydrogen fluoride (HF).
12. The method of claim 1 , wherein the lens array contacts a second surface of the first substrate.