Ultrasound diagnostic apparatus and liquid crystal display apparatus

An ultrasound diagnostic apparatus comprising:

• a probe that irradiates an object with an ultrasound signal and receives an ultrasound signal reflected off the object;
• a processing unit that generates image information based on the reflected ultrasound signal;
• and
• a liquid crystal display that displays the image information, wherein
• the liquid crystal display includes:
• a liquid crystal panel including a pair of substrates arranged in an opposing manner, and a liquid crystal layer sandwiched between the pair of substrates;
• a pair of polarizing plates arranged on a light source side and a display surface side, respectively, of the liquid crystal panel, and forming a crossed Nicol prism;
• a first optical element in which a light-blocking layer and a light-transmitting layer are alternately and continuously arranged in a planar direction, the first optical element being arranged between the polarizing plate on the light source side and the light source;
• and
• a second optical element having a surface scattering function and arranged on the polarizing plate on the display surface side, and
• the first optical element is arranged such that a major axis of the light-blocking layer that is an axis extending in a direction in which light is transmitted is oriented in a direction determined based on at least one of the crossed Nicol prism and the second optical element.