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Company News >> The fingerprint development of BOE LCD screen was successful. Mass production at the end of 2019 Who will start Xiaomi Huawei? 13th,August,2019
                                              Recently, an LCD screen fingerprint engineering machine was exposed at the Huawei Developers Conference. Liu Xiaodong, vice president of BOE, said that the optical fingerprint sensing technology of BOE LCD screen has been successfully developed and will be mass-produced by the end of 2019. As soon as the news came out, it seemed that the LCD had seen the hope of renewed interest. Which screen is better? Can LCD beat OLED? Next, enter our content today.

The screen acts as a “media” for communicating information between mobile phones and users. It plays a vital role in the process of human-computer interaction. A good screen not only provides users with a comfortable experience, but also a “bad habit”. Cultivation. Far away, let's take a plus 7 Pro, there are netizens comment: Most people who have used one plus 7 Pro will sigh their eyes as if they are picky, because its screen is really something!

So far, the screens of domestic mobile phones are divided into two camps, LCD and OLED. The debate on the quality of the two screens has not stopped. Due to the difference in working principle, the two screens have their own advantages. In the past two years, due to the popularity of fingerprint recognition under the screen, OLED screens have blossomed everywhere, up to the flagship of 10,000 yuan, down to the low-end of thousands of dollars. As long as the mobile phone supporting screen fingerprints is equipped with OLED screens.

Let's first briefly talk about the difference between LCD and OLED. Friends who already know can read it selectively.

LCD liquid crystal display (Liquid Crystal Display), its structure is similar to sandwich, divided into upper and lower layers, the glass substrate underneath carries thin film transistors, which is also known as TFT, and the upper glass substrate is colored with color filter. The film is placed in the middle of the upper and lower parallel glass substrates, and the movement direction of the liquid crystal molecules is controlled by the signal and voltage changes on the thin film transistors, thereby controlling whether each polarized light is emitted to achieve the purpose of displaying information.

OLED (Organic Light-Emitting Diode) is intended to be an organic light-emitting diode, which has since become a synonym for the screen. As a self-luminous material, the transparent electrode of ITO glass is used as an anode, and holes are injected from the anode into the hole transport layer. The metal electrode acts as a cathode, and the electron is driven to transmit electrons from the cathode to the electron transport layer, and then to the light-emitting layer. When they meet, excitons are generated, and the light-emitting molecules are excited to emit light after being irradiated.

Due to the essential difference between the above two working principles, there is also a significant difference in volume and display effect. In addition to the LCD screen, the OLED screen has higher contrast and wider color gamut. Can achieve higher brightness than the LCD screen, making this screen have a better display in the sun.

However, OLED is not perfect. In the process of using mobile phones, the lower the brightness of the screen, the higher the frequency of flashing of each light-emitting unit, which is what many netizens call "spicy eyes", and LCD does not have such problems. . Although most of the mobile phones released in the past six months support DC dimming, it is not a cure for the symptoms. It can only be said that it is better than nothing.

Overall, mobile phone manufacturers choose to carry OLED screens for three reasons: high screen brightness, good display effect; simple screen structure, light and thin, flexible; ideal light transmission, easy to carry screen fingerprints. If the manufacturer chooses to have an LCD screen, the only reason is "cost."

Do you prefer LCD or OLED? Let's leave a comment below.

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