Front light display device and manufacturing thereof
A front light display device includes a reflective display module, a light guide plate, an optical clear adhesive, plural microstructures, and a light source. The light guide plate has a first surface and a second surface opposite to the first surface, and a third surface adjacent to the first and second surfaces. The light guide plate is made of a material including glass. The optical clear adhesive is located between the reflective display module and the first surface of the light guide plate. The microstructures are located on the first surface of the light guide plate. The light source faces the third surface of the light guide plate.
1. A front light display device, comprising:
a reflective display module;
a light guide plate having a first surface, a second surface opposite to the first surface, and a third surface adjacent to the first surface and the second surface, wherein the light guide plate is made of a material comprising glass;
an optical clear adhesive located between the reflective display module and the first surface of the light guide plate;
a plurality of microstructures located on the first surface of the light guide plate;
a light source facing the third surface of the light guide plate; and
a touch sensing layer between the microstructures and the first surface of the light guide plate.
2. The front light display device of claim 1 , further comprising:
a surface treatment layer located on the second surface of the light guide plate.
3. The front light display device of claim 1 , wherein a thickness of the optical clear adhesive is greater than a height of each of the microstructures.
4. The front light display device of claim 1 , wherein a thickness of the optical clear adhesive is h, and a height of each of the microstructures is d, and h>5d.
5. The front light display device of claim 1 , wherein the microstructures are made of a material comprising an ultra-violet curing adhesive.
6. The front light display device of claim 1 , wherein a size of the light guide plate is greater than a size of the reflective display module, such that a side of the light guide plate having the third surface protrudes from the reflective display module.
7. The front light display device of claim 1 , wherein the light guide plate has a fourth surface opposite to the third surface, and the fourth surface and a side of the reflective display module are coplanar.
8. The front light display device of claim 7 , further comprising:
a waterproof glue surrounding the reflective display module and the optical clear adhesive, wherein at least one portion of the waterproof glue extends to the fourth surface of the light guide plate.
9. A manufacturing method of a front light display device, comprising:
(a) forming a touch sensing layer on a first surface of a light guide plate;
(b) forming a plurality of microstructures on the first surface of the light guide plate such that the touch sensing layer is between the microstructures and the first surface of the light guide plate, wherein the light guide plate is made of a material comprising glass; and
(c) utilizing an optical clear adhesive to adhere the first surface of the light guide plate to a reflective display module.
10. The manufacturing method of the front light display device of claim 9 , wherein step (b) comprises:
coating an ultra-violet curing adhesive on the first surface of the light guide plate;
performing a rolling treatment or a laminating treatment on the first surface of the light guide plate, thereby shaping the ultra-violet curing adhesive; and
utilizing an ultra-violet light to irradiate the ultra-violet curing adhesive, thereby curing the ultra-violet curing adhesive to form the microstructures.
11. The manufacturing method of the front light display device of claim 9 , further comprising:
forming a surface treatment layer on a second surface of the light guide plate opposite to the first surface of the light guide plate.