Patent ID: 11912054

Abstract:
An LTHC layer having the visible light transmission property, having sufficient infrared absorption property, capable of improving transfer accuracy of the organic electroluminescence device by irradiation with a laser beam, and further enabling application in a wide variety of fields including electronics, medicine, agriculture, machine, etc. A donor sheet using the LTHC layer including infrared absorbing particles and a binder component, wherein the infrared absorbing particles are composite tungsten oxide fine particles including a hexagonal crystal structure, a lattice constant of the composite tungsten oxide fine particles is such that the a-axis is 7.3850 Å or more and 7.4186 Å or less, and the c-axis is 7.5600 Å or more and 7.6240 Å or less, and a particle size of the composite tungsten oxide fine particles is 100 nm or less, and the solar radiation transmittance is 45% or less.