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A low power consumption is an essential issue for all of the electrical products, especially for the wearable electrical products, and the liquid crystal displays. This manuscript proposed a single polarized light emitting diode (LED) chip which is used for a direct back light unit for LCD. A wire grid polarizer and a meta‐ surface textures are set on the top and bottom of the LED chip in order to obtain a high polarization and transparency. After optimization the potential parameters, the transmittance of TM and the polarization are 93.71% and 99.3% respectively. It can replace the normal LED of direct back light unit in order to obtain a high efficiency of 20% improvement, by comparing liquid crystal display using the APF polarizer. It can be used for reducing power consumption and supply dependence, as well as the cost of displays. [ABSTRACT FROM AUTHOR]

A low power consumption is an essential issue for all of the electrical products, especially for the wearable electrical products, and the liquid crystal displays. This manuscript proposed a single polarized light emitting diode (LED) chip which is used for a direct back light unit for LCD. A wire grid polarizer and a meta‐surface textures are set on the top and bottom of the LED chip in order to obtain a high polarization and transparency. After optimization the potential parameters, the transmittance of TM and the polarization are 93.71% and 99.3% respectively. It can replace the normal LED of direct back light unit in order to obtain a high efficiency of 20% improvement, by comparing liquid crystal display using the APF polarizer. It can be used for reducing power consumption and supply dependence, as well as the cost of displays. [ABSTRACT FROM AUTHOR]

A low power consumption is one of the most important issue for all of the electrical products, especially for wearable products. This manuscript proposed a polarized light emitting diode (LED) chip which is used for a direct back light unit for LCD. A wire grid polarizer and a meta-surface textures are set on the top and bottom of the LED chip in order to obtain a high polarization ratio and transparency. After optimizing the potential parameters, the transmittance of TM and the polarization can reach up to 93.71% and 99.3% respectively. It can replace the normal LED in direct back light unit, and obtain an improved efficiency of 20%, when comparing liquid crystal display with a bottom APF polarizer. It can be used for reducing power consumption and supply dependence, as well as the cost of displays. [ABSTRACT FROM AUTHOR]

This report discusses a glass based ultra‐thin Red, Green and Blue Mini‐LED direct back light for high‐end professional liquid crystal displays. In this work, a gradient reflected pattern combined Mini‐LED driving lines reflect light scattering between the patterns and back reflector of back light unit, and therefore enlarge Mini‐LED optical length. A group of a red, green and red Mini‐LED is using to generate white for display, replacing a 0.3–0.5mm thick color changing film. The total thickness of Mini‐LED direct back light is reduced to 1.595mm when the Mini‐LED pitch is about 4.75mm. This direct back light can realize high‐dynamic range to improving display quality without cost consumption and then extend lifetime liquid crystal display lifetime in coming decent years. [ABSTRACT FROM AUTHOR]

This work discusses a super thin Mini‐LED direct back light for upscale liquid crystal displays. In this manuscript, it is that Mini‐LED light is reflected between a gradient reflected pattern combined with Mini‐LED driving lines and back reflector of back light unit. The optical length is therefore enlarged in limited distance, which means that the diffusor plate and optical distance can be removed. Meanwhile, light from a red, a green and a blue Mini‐LED is mixing to generate white for display, replacing a 0.3–0.5mm thick color changing film, such as quantum dot enhancement film. The total thickness of this designed Mini‐LED back light is about 1.595mm when Mini‐LED pitch is 4.75mm. The measured uniformity and optical efficiency are verified as designs above 90% and 45%. Additionally, this direct back light can realize high‐dynamic range to improving display quality with lower power consumption. This work not only improves display quanlity in limited thickness, but also extends lifetime of liquid crystal display in coming future. [ABSTRACT FROM AUTHOR]

In recent years, as a hot inorganic luminescent materials, Quantum dots have been widely used in display devices because of their high photoluminescence efficiency and excellent color gamut. In order to further improve the performance of LCD display devices, we consider introducing quantum dot color film into the structure of LCD. In this report, we pixelate the QDs to replace the traditional color film, this is different from the QD was widely used method which QDs was made into thin film as part of the back light unit. Compared with the general LCD, QDCF can achieve higher efficiency, higher color gamut and wider viewing angle, in order to solve the polarization of the liquid crystal cell, we use WGP In liquid crystal cell to achieve high contrast ratio. [ABSTRACT FROM AUTHOR]

With the increasing of pixel density, the wiring becomes denser and the aperture ratio becomes smaller, which leads a loss in transmittance of LCD products. It is a big challenge to develop a high resolution LCD display without much loss in brightness. In this paper, We report a novel method to increase transmittance of the liquid crystal display by thin films optical optimization. We optimized the transmission curve of array substrate by thin film optical model, which is match well with the backlight spectrum and the transmission curve of LC, CF substrate and polarizer. This method was applied in LTPS and oxide LCD product. The transmittance can be improved by 5.5% and 5.06% compared with the original plan, without much influence on electrical characteristics and reliability of the products. [ABSTRACT FROM AUTHOR]

In quantum dot color filter (QDCF) LCD blue backlight is converted to red/green light separately by red/green quantum dot materials. In cell polarizer is necessary due to the depolarization of quantum dot material. WGP is more promising as in cell polarizer. Therefore it is particularly important to insure the transmittance of blue light as high as possible. In the article, the stacks of WGP and the upper and lower layers were designed to improve the transmittance of blue light. WGP with the upper and lower layers by chemical vapor deposition was fabricated by using nano‐imprinting lithography. The blue light transmittance of WGP in the panel without the upper and lower layers was about 24%. We optimized the design of thin film without changing the structure of WGP to make the transmittance to be increased to 40%. Experimental results showed that the proposed design could achieve a fairly high transmittance 39%. [ABSTRACT FROM AUTHOR]

In quantum dot color filter (QDCF) LCD blue backlight is converted to red/green light separately by red/green quantum dot materials. In cell polarizer is necessary due to the depolarization of quantum dot material. WGP is more promising as in cell polarizer. Therefore it is particularly important to insure the transmittance of blue light as high as possible. In the article, the stacks of WGP and the upper and lower layers were designed to improve the transmittance of blue light. WGP with the upper and lower layers by chemical vapor deposition was fabricated by using nano‐imprinting lithography. The blue light transmittance of WGP in the panel without the upper and lower layers was about 24%. We optimized the design of thin film without changing the structure of WGP to make the transmittance to be increased to 40%. Experimental results showed that the proposed design could achieve a fairly high transmittance 39%. [ABSTRACT FROM AUTHOR]

Charging compensation needs to be verified in 75inch oxide 8K4K 120Hz TV panel because pixel charging time is only 1.85us. To faster and cost less, a new method using 3.42inch panel to simulation 5 key positions is proposed. The charging ratio uniformity increases from 85% to 99% along data line direction. [ABSTRACT FROM AUTHOR]