Digital Optical Core, Xingyu Technology and other four companies obtained Micro/Mini LED patents

Recently, four LED-related companies, including Digital Optical Core, Huaxing Laser, Xingyu Co., Ltd. and Almaden Co., Ltd., have successively obtained Micro/Mini LED patents, involving pixel driving methods, epitaxial preparation technology, backlight module technology, interactive car light applications, etc.

Digital Optical Core: Obtained a patent for Micro LED display chip and pixel driving method and electronic equipment applicable thereto

Information from the State Intellectual Property Office shows that Beijing Digital Optical Core Integrated Circuit Design Co., Ltd. has obtained a patent titled "Micro-LED display chip and pixel driving method and electronic equipment applicable thereto", with the authorization announcement number CN119229796B, and the application date is November 2024.

The invention relates to the field of micro-display technology and discloses a Micro-LED display chip and a pixel driving method and electronic equipment applicable thereto, including a chip driver circuit that uses a digital scanning method to drive LED light-emitting elements for picture display, and the digital scanning method uses PWM driving signals to control the LED light-emitting element switches to achieve grayscale display;

The present invention increases the driving current of the LED during the data scanning process of high bits, thereby reducing the pixel clock frequency required during the driving scanning process, thereby reducing the performance requirements for the peripheral driving circuit of the Micro-LED display chip.

Huaxing Laser: Obtained a patent for an epitaxial wafer applied to Micro-LED and its preparation method

Information from the State Intellectual Property Office shows that Jiangsu Huaxing Laser Technology Co., Ltd. has obtained a patent titled "An epitaxial wafer applied to Micro-LED and its preparation method", with the authorization announcement number CN112382707B, and the application date is December 2020.

The invention relates to the field of semiconductor technology, and in particular to a device used in Micro The LED epitaxial wafer and its preparation method are different in that they include the following steps: Step 1: Select a substrate; Step 2: Sequentially grow a buffer layer, a stress and warpage control layer, an N-type semiconductor layer, an active layer, an electron blocking layer and a P-type semiconductor layer on the substrate; Step 3: Grow a contact layer on the P-type semiconductor layer; Step 4: After the above-mentioned epitaxial growth is completed, the epitaxial wafer is annealed, and then the temperature of the epitaxial wafer is lowered to room temperature to complete the preparation. The invention can effectively control the warpage performance and stress of the bottom layer during epitaxy, and effectively improve the consistency of edge and center yields.

Information shows that Jiangsu Huaxing Laser Technology Co., Ltd. was established in 2016 and is located in Xuzhou City. It is an enterprise mainly engaged in the manufacturing of computers, communications and other electronic equipment.

Xingyu Co., Ltd.: Obtained a patent for display interactive car lights based on Mini LED

Information from the State Intellectual Property Office shows that Changzhou Xingyu Car Lighting Co., Ltd. has obtained a patent called "A display interactive car light based on Mini LED", with the authorization announcement number CN222480264U, and the application date is January 2024.

The patent abstract shows that the embodiment of the present invention discloses a display interactive car light based on Mini LED, including: a Mini LED module arranged at the front end or tail of the car; the Mini LED module includes several Mini LED chips; the size of each Mini LED chip is less than 1mm; and the center distance of each Mini LED chip is less than 1mm; the thickness of the Mini LED module is less than 10mm. By implementing the car lights according to the embodiments of the present invention, it is possible to solve the problem that the current information interaction between cars and cars and between cars and pedestrians only involves light signals such as position, steering, braking, reversing, and sirens. The information is fuzzy and single. It also solves the problem that the current LED-based pixelated car lights have large pixel spacing and cannot display complex and delicate patterns. The interaction between cars and the environment is difficult to meet the diverse information needs of future intelligent development of cars.

Changzhou Almaden: Obtained patent for all-glass direct Mini LED backlight module with heat dissipation effect

According to information from the State Intellectual Property Office, Changzhou Almaden Co., Ltd. has obtained a patent titled "An all-glass direct Mini LED backlight module with heat dissipation effect". The authorization announcement number is CN222482564U, and the application date is May 2024.

The patent summary shows that the utility model belongs to the technical field of backlight modules, and specifically relates to an all-glass direct-type Mini LED backlight module with heat dissipation effect. This all-glass direct-type Mini LED backlight module with heat dissipation effect includes a conductive circuit board and a number of Mini LED lamp beads arranged on the guide circuit board. The conductive circuit board is located on the Mini A support frame is provided at one edge of the LED lamp bead, and a glass diffusion plate is provided at the end of the support frame. The glass diffusion plate and the conductive circuit board are arranged in parallel; a brushed decorative aluminum film is provided on the side of the conductive circuit board away from the Mini LED lamp bead, and a power board is provided on the outward side of the brushed decorative aluminum film. A heat-insulating film is provided between the power board and the brushed decorative aluminum film. This all-glass direct-type Mini LED backlight module with heat dissipation effect can reduce temperature and extend service life.