Laser display technology is a new display technology that began to appear in the 1990s. It is the fourth generation display technology after black and white display, color display and digital display. Among the many developing display technologies, laser display technology represents the future development of display technology. The trend and mainstream direction are the focus of future display field competition.
As a global leader in laser TV, Hisense has deployed laser display technology in 2007 and released laser TV in the world in 2014. In 2018, Hisense released L5 and L7 series laser TVs, as the fourth generation of Hisense's laser TV products, standard laser TV. Fully entering the 4K era, audio and video has reached a new height than the traditional LCD TV.
Since 2016, Hisense's key technologies for laser TV have been continuously funded by two key national research and development programs for strategic advanced electronic materials, including 'Dual HD/Large Color Gamut Laser Display Machine R&D and Characterization Evaluation' and 'High Beam Quality , low threshold, long life, low-cost blue-green LD materials and equipment key technology and engineering research' project. Received special funding, not only helps Hisense continue to increase capital investment in the laser field, but also reflects Hisense's laser display technology Leading position.
Among them, the 'Dual HD/Large Color gamut laser display machine development and characterization evaluation' project breaks through 4K DLP optical engine, trichromatic laser module, speckle suppression and ultra-high resolution short-focus projection lens. Develop high-performance optical microstructure projection screens, low-voltage fast-response blue-phase liquid crystal molecular materials, high-precision color space conversion and HDR technology, complete system light, machine, electricity, heat integration and other technologies, and finally develop a world-leading large The gamut/dual high definition laser displays the complete machine and establishes a complete characterization characterization slip to establish national/industry standards.
And 'High beam quality, low threshold, long life, low cost blue-green light LD materials and device key technology and engineering research' project for laser display on blue, green LD spectrum, beam quality, efficiency, power, lifetime, Requirements for yield, study the composition of AlInGaN material system and p-doping activation and other techniques to control LD luminescence characteristics; carry out optimized design of epitaxial structure and device, study low defect, low optical waveguide loss growth process, reduce threshold current density, Improve stimulated radiation quantum efficiency, improve beam quality, improve temperature characteristics; optimize cavity surface without absorption, passivation and coating process, improve cavity surface damage threshold, increase output power, and promote blue, green LD application in laser display field The project will be undertaken by 11 domestic superior units. Through the research of this project, the blue and green LD for laser display will be successfully developed, which will lay the core device foundation for the development of laser display industry in China.
It is reported that Hisense has applied for 478 patents in the field of laser display. The core laser optical engine can be 100% independent research and development design, from research and development, design to complete machine manufacturing and completely independent operation, more than 60% of the manufacturing costs are in their own hands.
