BOE Technology and two other companies jointly filed patents related to transistor devices, introducing the structure of the transistor device and the overlap of via projection.

On April 4, the National Intellectual Property Administration’s information shows that BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd., and Beijing BOE Technology Development Co., Ltd. have applied for a patent titled “Transistor Device and Preparation Method Thereof, and Display Substrate.”

The publication number is CN121773722A, the application number is CN202580000111.9, the publication (announcement) date is March 31, 2026, the filing date is January 24, 2025. The inventors are Li Feng, Liu Yanming, Zou Jiahbin, Yan Yan, Ma Yu, Wang Jing, Guo Hui, Diao Kai, and Shi Pan. The patent agency is Beijing Anxin Fangda Intellectual Property Agency Co., Ltd. The patent attorneys are Jie Tingting and Qu Peng. The classification numbers are H10D86/00 and H10D87/00.

The patent abstract indicates a transistor device and a preparation method therefor, and a display substrate. In particular, the transistor device is disposed on a substrate (30). The transistor device includes: a gate electrode (31), a gate insulating layer (35), and an active layer (32). The gate electrode (31) is located on a side of the gate insulating layer (35) that is near the substrate (30). The active layer (32) is located on a side of the gate insulating layer (35) that is far from the substrate (30). The gate insulating layer (35) includes: a first insulating layer (351) and a second insulating layer (352) stacked on the substrate (30). In the first insulating layer (351) and the second insulating layer (352), one of the insulating layers has a via (VV). The orthogonal projection of the via (VV) on the substrate (30) overlaps at least partially with the orthogonal projection of the active layer (32) on the substrate (30).

BOE A was established on April 9, 1993, and was listed on the Shenzhen Stock Exchange on January 12, 2001. Its registered address and office address are both located in Beijing. It is one of the world’s largest providers of semiconductor display products and services. Its core businesses include optoelectronics and display devices, among others, and it has strong technical research and development capabilities.

BOE A’s principal businesses are optoelectronics and display devices, as well as display information terminal equipment. The industry it belongs to in the Shenwan classification is Electronics - Optical Electronics - Panels, and it covers concept sectors such as aerosol detection, naked-eye 3D, and electronic paper, among others.

In 2025, BOE A’s operating revenue reached RMB 204.59 billion (37.58B yuan), ranking No. 1 among 12 companies in the industry, far exceeding the industry average of RMB 3.47B and the median of RMB 184.06B. The runner-up TCL Technology had RMB 166.42B. In its principal businesses, the share of the display devices business was 81.34%, amounting to RMB 5.03B. In terms of net profit, in 2025 it was RMB 103M, also ranking No. 1 among the 12 industry companies. The industry average was RMB 0.49 billion, and the median was RMB 234M. The runner-up is Leyard Optoelectronics Technology with RMB 8.94B.

BOE Technology Group Co., Ltd.’s recent patents are as follows:

According to Tianyancha data, Beijing BOE Display Technology Co., Ltd. was established on January 6, 2009. Its legal representative is Du Hongwei. The company operates in the computer, communications, and other electronic equipment manufacturing industry. The company size is large-scale. Its registered capital is RMB 8.94B, and its paid-in capital is RMB 894.14568 million. Its registered address is 118 Jinhai 1st Road, Beijing Economic-Technological Development Zone, Beijing, China. Beijing BOE Display Technology Co., Ltd. has made external investments in 0 companies, participated in 296 bidding/tender projects. In terms of property clues, it has 0 trademark information entries, 5000 patent information entries, and holds 440 administrative licenses.

Beijing BOE Display Technology Co., Ltd.’s recent patents are as follows:

According to Tianyancha data, Beijing BOE Technology Development Co., Ltd. was established on June 27, 2016. Its legal representative is Liu Zhiqiang. The company operates in the computer, communications, and other electronic equipment manufacturing industry. The company size is micro-sized. Its registered capital is RMB 38 million, and its paid-in capital is RMB 11 million. Its registered address is Room 407, Building 1, No. 9, Dize Road, Beijing Economic-Technological Development Zone, Beijing, China. Beijing BOE Technology Development Co., Ltd. has made external investments in 1 company and participated in 95 bidding/tender projects. In terms of property clues, it has 4 trademark information entries and 4053 patent information entries, and holds 4 administrative licenses.

Beijing BOE Technology Development Co., Ltd.’s recent patents are as follows:

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