BOE announced the mass production of f-OLED LTPO variable frequency display

BOE announced that the f-OLED LTPO variable frequency display has achieved mass production. Recently, BOE (BOE) has developed a leading mass-produced LTPO variable frequency display, which is the first to be installed in the Magic 4 series, Honor's annual flagship product. According to BOE, this series of products adopts a 6.81-inch flexible OLED screen, has a 1Hz-120Hz adaptive seven-frequency dynamic refresh mode, and a 360Hz high touch sampling rate. (BOE) self-developed new pixel arrangement optimizes the underlying logical structure of pixel display and comprehensively upgrades the display image quality. battery life issue.

LTPO (Low-Temperature Polycrystalline Oxide) is a hybrid backplane technology, that is, low-temperature polysilicon and oxide hybrid TFT drive technology. In simple terms, it is to combine the two backplane technologies of LTPS (low-temperature polysilicon) and Oxide (oxide), and on the basis of the LTPS backplane, in the same pixel drive circuit, replacing part of the leakage current with Oxide TFT is large. The LTPS TFT with high mobility is used to drive the organic light-emitting diode, while the Oxide TFT with low leakage current is used to control the switch, which not only retains the strong driving ability of the LTPS TFT but also borrows the advantages of the low leakage current of the Oxide TFT. , can be described as eclectic.

But in fact, the conventional LTPO technical solutions also have problems such as poor display of dark images and low-frequency flickering screens, and the LTPO backplane preparation process is complicated, which has troubled the industry.

BOE said that BOE's f-OLED LTPO variable frequency display has achieved important achievements in a series of technical problems such as improving dark-state display uniformity, reducing low-frequency flicker, enhancing OxideTFT's anti-photosensitivity, improving backplane transmittance, and optimizing the LTPO mass production process. Innovative breakthrough.

The following are the highlights of BOE's introduction of-OLED LTPO:

Better low-frequency picture quality

Based on the differentiated design of the backplane drive circuit with independent intellectual property rights of BOE, it ensures that the screen has good display uniformity in the dark picture scene with an ultra-low refresh rate of 1Hz, allowing users to enjoy variable frequency display and long battery life. , more convenient for mobile entertainment and social interaction!

Health display, better eye protection

Based on the optimization of Oxide TFT preparation process, BOE (BOE) can effectively improve Oxide's anti-photosensitivity and device stability, and can reduce the trouble for users of the flickering problem that is prone to low-frequency display; at the same time, through joint innovation with Honor, it is the first time to achieve The 1920Hz ultra-high frequency PWM dimming mode on the LTPO screen can reduce the potential damage to the eyes from the screen flicker in the dark environment; in addition, this f-OLED LTPO frequency conversion display is also equipped with BOE (BOE) flexible OLED low blue light technology, effectively reducing the proportion of harmful blue light generated by the screen, healthy display, and better eye protection.

Large functional integration space

Through the fine adjustment of the pixel voltage and the optimized design of the backplane wiring scheme, while ensuring the uniform display of RGB, the transmittance of the backplane is improved, and the expansion space is reserved for the integrated under-screen fingerprint recognition and other photosensitive devices, which is conducive to the creation of LTPO variable frequency display products with more integrated functions.

Low power consumption, long battery life

For end-users, the higher the refresh rate of the display screen, the smoother the playback and operation images will be, but the power consumption will also increase accordingly.

BOE (BOE) f-OLED LTPO variable frequency display screen, equipped with the whole machine intelligent system hardware, automatically detects the playback screen scene, so that the screen refresh rate can achieve adaptive switching at the highest 120Hz and the lowest 1Hz.

When playing high-speed moving dynamic pictures, such as games, watching movies, etc., the screen can maintain a high refresh rate of 120Hz to ensure that the screen is not smeared, allowing users to enjoy a visual feast; when playing low-speed or even still pictures, such as text In scenarios such as reading and long-term standby, the screen refresh rate can be automatically reduced to 1Hz, and the power consumption is greatly reduced. With the optimization of the whole system, the battery life of the mobile terminal device can be extended to a certain extent.

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