Liquid crystal display device and manufacturing method thereof

A liquid crystal display device manufacturing method, comprising the following steps:

• (1) providing a lower substrate and forming a quantum rod orientation layer on a surface of the lower substrate with an inclined vapor deposition process such that the quantum rod orientation layer comprises a plurality of parallel grooves formed therein;
• (2) coating a quantum rod solution on the quantum rod orientation layer to form a quantum rod layer such that the quantum rod layer comprises a plurality of quantum rods, the plurality of quantum rods being caused by the quantum rod orientation layer to achieve parallel alignment so that a long axis direction of each of the plurality of quantum rods is substantially parallel to an extension direction of the grooves;
• (3) forming a first liquid crystal alignment layer on the quantum rod layer;
• (4) providing an upper substrate and forming a second liquid crystal alignment layer on one side of the upper substrate;
• (5) combining the lower and upper substrates together to have the first liquid crystal alignment layer and the second liquid crystal alignment layer opposing each other and filling liquid crystal between the first liquid crystal alignment layer and the second liquid crystal alignment layer to form a liquid crystal layer;
• (6) attaching an upper polarizer to one side of the upper substrate that is distant from the lower substrate, wherein the upper polarizer has a transmission axis direction that is substantially perpendicular to the extension direction of the grooves, so as to form a liquid crystal display panel;
• and
• (7) arranging a backlight source under the liquid crystal display panel to form a liquid crystal display device.

A liquid crystal display device, comprising a liquid crystal display panel and a backlight source arranged under the liquid crystal display panel;

• the liquid crystal display panel comprising a lower substrate, a quantum rod orientation layer arranged on the lower substrate, a quantum rod layer arranged on the quantum rod orientation layer, an upper substrate arranged opposite to the lower substrate, an upper polarizer arranged on one side of the upper substrate that is distant from the lower substrate, a first liquid crystal alignment layer that is arranged on the quantum rod layer at one side of the lower substrate that is adjacent to the upper substrate, a second liquid crystal alignment layer that is arranged on the upper substrate at one side adjacent to the lower substrate, and a liquid crystal layer interposed between the first liquid crystal alignment layer and the second liquid crystal alignment layer;
• the quantum rod orientation layer comprising a plurality of nanometer scale grooves that is arranged parallel to each other and have an extension direction substantially perpendicular to a transmission axis direction of the upper polarizer;
• the quantum rod layer comprising a plurality of quantum rods, the plurality of quantum rods each having a long axis direction that is substantially parallel to the extension direction of the grooves;
• wherein the quantum rod orientation layer is formed through an inclined vapor deposition process with a material being silicon nitride;
• wherein the inclined vapor deposition process is conducted at an evaporation angle of 20 to 45 degrees;
• and
• wherein the backlight source comprises an ultraviolet backlight source;
• the plurality of quantum rods being arranged according to different sizes to respectively generate, through excitation, red polarization light, green polarization light, and blue polarization light.