US 12,255,186 B2
Splicing display device
Yao Chen, Guangdong (CN); and Min Wang, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/618,486
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Nov. 19, 2021, PCT No. PCT/CN2021/131760
§ 371(c)(1), (2) Date Dec. 12, 2021,
PCT Pub. No. WO2023/082308, PCT Pub. Date May 19, 2023.
Claims priority of application No. 202111345650.6 (CN), filed on Nov. 15, 2021.
Prior Publication US 2024/0014184 A1, Jan. 11, 2024
Int. Cl. H01L 25/075 (2006.01); H05K 1/18 (2006.01)
CPC H01L 25/0753 (2013.01) [H05K 1/189 (2013.01); H05K 2201/10128 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A splicing display device, comprising:
at least two display devices, wherein two adjacent display devices are spliced to form a gap, and each of the display devices comprises a backplate, a panel disposed on the backplate, and a backlight module arranged on a light incident side of the panel, wherein the backplate comprises a base and a first surrounding wall connected on a periphery of the base, the base and the first surrounding wall define a receiving chamber, a limiting recess and a first hole are defined in the first surrounding wall, and the first hole is defined in a bottom of the limiting recess;
a middle frame, wherein the middle frame comprises a carrying part and a fixing part connected to the carrying part, the carrying part is arranged on two adjacent panels and covers the gap, and the fixing part is arranged in the gap and detachably connected to the backplate, wherein the fixing part comprises a plate body and a groove body protruding from the plate body, a second hole is defined in the groove body, the groove body is disposed in the limiting recess, the groove body and the backplate are detachably connected by a connection element, and the connection element is inserted through the first hole and the second hole;
a light emitting diode (LED) substrate, wherein the LED substrate is arranged on the carrying part; and
a flexible circuit board, wherein the flexible circuit board is connected to one side of the LED substrate facing the gap, an opening is defined in the carrying part, and the flexible circuit board passes through the opening and is disposed in the gap,
wherein the panel comprises a display area and a non-display area disposed on a periphery of the display area, and the non-display area comprises a non-bonding area and a bonding area for bonding the flexible circuit board;
the carrying part comprises a first portion and a second portion, the first portion is arranged in the bonding area, the second portion is arranged in the non-bonding area, and a width of the first portion is greater than a width of the second portion;
wherein the backlight module comprises the backplate and a support frame, the support frame is arranged in the receiving chamber, and the support frame is fixedly connected to the backplate;
the support frame comprises a second surrounding wall, a support plate, a third surrounding wall, and a connecting wall, the second surrounding wall is arranged inside and along a periphery of the receiving chamber, the support plate is protrudingly disposed on an opposite side of the second surrounding wall, the third surrounding wall surrounds around the support plate and arranged on the first surrounding wall, the connecting wall is disposed corresponding to the bonding area and extends from the third surrounding wall to the base, and the connecting wall is located on an outer side with respect to the first surrounding wall; and
the second surrounding wall is engaged with the first surrounding wall, and the connecting wall is engaged with the first surrounding wall.