US 11,720,209 B2
Pressure detection apparatus, screen assembly, and mobile terminal
Yang Guo, Chang'an Dongguan (CN); Kui Li, Chang'an Dongguan (CN); and Changhong Xie, Chang'an Dongguan (CN)
Assigned to VIVO MOBILE COMMUNICATION CO., LTD., Chang'an Dongguan (CN)
Filed by VIVO MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed on Jun. 14, 2021, as Appl. No. 17/347,381.
Application 17/347,381 is a continuation of application No. PCT/CN2019/117448, filed on Nov. 12, 2019.
Claims priority of application No. 201811548465.5 (CN), filed on Dec. 18, 2018.
Prior Publication US 2021/0303102 A1, Sep. 30, 2021
Int. Cl. G06F 3/042 (2006.01); G02B 5/20 (2006.01); G06F 3/041 (2006.01); H04M 1/02 (2006.01)
CPC G06F 3/0421 (2013.01) [G02B 5/208 (2013.01); G06F 3/041 (2013.01); G06F 3/0414 (2013.01); H04M 1/0266 (2013.01); G06F 2203/04106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pressure detection apparatus, wherein the pressure detection apparatus comprises a substrate, a light conducting layer, a light absorbing layer, and a photosensitive layer that are arranged in order, and further comprises a light source, wherein
the light source is capable of emitting light of a first frequency, and an emergent surface of the light source faces toward the light conducting layer;
the light conducting layer disperses the light of the first frequency;
the light absorbing layer comprises a container forming a closed space and an absorption liquid filling the container, wherein the absorption liquid absorbs at least a part of the light of the first frequency, and at least one side surface of the container is an elastic surface; and
a photosensitive surface of the photosensitive layer faces toward the light absorbing layer, and the photosensitive layer is used to detect the light of the first frequency that passes through the light absorbing layer;
wherein the absorption liquid is used to absorb the light of the first frequency, and has no absorption effect on visible light.