US 12,443,074 B2
Liquid crystal display device
Ruei-Hung Tsai, Hsinchu (TW)
Assigned to AUO Corporation, Hsinchu (TW)
Filed by AUO Corporation, Hsinchu (TW)
Filed on Sep. 17, 2024, as Appl. No. 18/888,143.
Claims priority of application No. 112136902 (TW), filed on Sep. 26, 2023.
Prior Publication US 2025/0102865 A1, Mar. 27, 2025
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133611 (2013.01) [G02F 1/133512 (2013.01); G02F 1/133603 (2013.01); G02F 1/133612 (2021.01)] 4 Claims
OG exemplary drawing
 
1. A liquid crystal display device, comprising:
a liquid crystal display panel, comprising:
a first substrate;
a second substrate; and
a liquid crystal layer and a black matrix, located between the first substrate and the second substrate, wherein the black matrix defines a display area and a peripheral area, and the peripheral area is located on at least one side of the display area; and
a light-emitting diode light board, overlapping the liquid crystal display panel in a normal direction of a light-emitting surface of the liquid crystal display panel, wherein the light-emitting diode light board comprises:
a circuit substrate, overlapping the display area and the peripheral area in the normal direction of the light-emitting surface of the liquid crystal display panel;
a plurality of light-emitting diodes, arrayed on the circuit substrate, wherein the plurality of light-emitting diodes overlap the display area in the normal direction of the light-emitting surface of the liquid crystal display panel; and
a resin layer, covering the circuit substrate and overlapping the display area and the peripheral area in the normal direction of the light-emitting surface of the liquid crystal display panel, wherein a horizontal distance between an edge of the resin layer and an edge of the display area ranges from 0.5 to 2.8 times a vertical distance between the black matrix and an upper surface of the resin layer so that a light emitted by one of the plurality of light-emitting diodes near the peripheral area is reflected by the upper surface of the resin layer and is then reflected by a circuit structure of the circuit substrate, and after the light leaves the light-emitting diode light board, the light enters the liquid crystal display panel in the display area and then leaves the light-emitting surface of the liquid crystal display panel at an angle being between 30 degrees and 70 degrees.