30results about How to "Increase the lighting voltage" patented technology

The embodiment of the invention discloses a pixel structure, a manufacturing method thereof, and a display panel. The pixel structure includes a substrate, an anode layer, a first auxiliary light-emitting layer, a light-emitting layer, a cathode layer and at least one first resistor structure; the light-emitting layer at least comprises a first light-emitting portion and a second light-emitting portion; the first light-emitting portion corresponding to first sub pixels; the second light-emitting portion is corresponding to the second sub pixels; the turn-on voltage of the first sub pixels is larger than the turn-on voltage of the second pixels; the first resistor structures are located on a closed path from the first auxiliary light emitting layer to the cathode layer and are arranged at the vertical direction of the second light-emitting portion and are at least partially overlapped with the second light-emitting portion, and are not overlapped with the first light-emitting portion; and the absolute value of the difference value between the sum of the resistance values of the at least one first resistor structure and the second light-emitting portion and the resistance value of the first light-emitting portion is smaller than a first preset value, so that color crosstalk which occurs when a display panel comprising the pixel structure performs display can be alleviated, and the display quality of the display panel is improved.

The invention provides a method for measuring the quantum dot surface ligand content and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity of quantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand. The coverage rate Ki of the organic ligand containing sulfydryl on the quantum dot surface is determined by an oxidation-reduction method. The method can be used for quality evaluation of the quantum dot. If the Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused by different drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dot display panel can be improved.

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand. The coverage rate Ki of the organic ligand containing sulfydryl or nitrogen on the quantum dot surfaceis determined by potentiometric titration. The method can be used for quality evaluation of the quantum dot. If the Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the highstability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused by different drying rates in quantum dotsolution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dot display panel can be improved.

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.

The invention provides a method for measuring the ligand content on the surface of the quantum dot and a preparation method for the quantum dot ink. The quantum dot ink preparation method of the present invention is used to configure the quantum dot ink, which can ensure the uniformity of the quality of the quantum dot ink, and can ensure that the solubility, drying rate and coffee ring effect of different batches of quantum dot ink are the same, and can improve the quality of the quantum dot ink. The uniformity of pixel resolution, turn-on voltage, and photoelectric efficiency of the display panel.

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.

The invention proposes a method for measuring the coverage ratio of ligands on the surface of quantum dots. Determination of the coverage rate K of ligands of organic ligands containing sulfhydryl groups or nitrogen on the surface of quantum dots by potentiometric titration i , which can be used to evaluate the quality of quantum dots. If K i less than 2*10 ‑10 mol / cm 2 , the quality of quantum dots is not good, and K i Increase the value before proceeding with applications such as solution or ink dispensing. Adopt this method to determine quantum dot surface ligand coverage rate, result is accurate, easy to operate, further, can guarantee the stability of quantum dot surface ligand content by the method of the present invention, can guarantee the solubility of different batches of quantum dots, avoid The coffee ring effect caused by the different drying rates when the quantum dot solution is prepared into a film can improve the uniformity of the pixel resolution, turn-on voltage, and photoelectric efficiency of the quantum dot display panel.

The invention provides a method for measuring the ligand coverage on the surface of quantum dots, which can be used for quality assessment of quantum dots. If K i less than 2*10 ‑10 mol / cm 2 , the quality of quantum dots is not good, and K i Increase the value before proceeding with applications such as solution or ink dispensing. Adopt this method to determine quantum dot surface ligand coverage rate, result is accurate, easy to operate, further, can guarantee the stability of quantum dot surface ligand content by the method of the present invention, can guarantee the solubility of different batches of quantum dots, avoid The coffee ring effect caused by the different drying rates when the quantum dot solution is prepared into a film can improve the uniformity of the pixel resolution, turn-on voltage, and photoelectric efficiency of the quantum dot display panel.

The invention proposes a method for measuring ligand content on the surface of quantum dots and a method for preparing quantum dot ink. Using this method to configure the quantum dot ink can ensure the uniformity of the quality of the quantum dot ink, and can ensure that the solubility, drying rate and coffee ring effect of different batches of quantum dot ink are the same, and can improve the pixel resolution of the quantum dot display panel. , Uniformity of lighting voltage and photoelectric efficiency.

The invention proposes a method for measuring ligand content on the surface of quantum dots and a method for preparing quantum dot ink. Using this method to configure the quantum dot ink can ensure the uniformity of the quality of the quantum dot ink, and can ensure that the solubility, drying rate and coffee ring effect of different batches of quantum dot ink are the same, and can improve the pixel resolution of the quantum dot display panel. , Uniformity of lighting voltage and photoelectric efficiency.

The embodiment of the present invention discloses a pixel structure and its manufacturing method, and a display panel. The pixel structure includes: a substrate, an anode layer, a first auxiliary light-emitting layer, a light-emitting layer, a cathode layer, and at least one first resistance structure, wherein the light-emitting The layer at least includes a first light-emitting portion and a second light-emitting portion, the first light-emitting portion corresponds to the first sub-pixel, the second light-emitting portion corresponds to the second sub-pixel, and the turn-on voltage of the first sub-pixel is greater than the turn-on voltage of the second sub-pixel Voltage, the first resistance structure is located on the path from the first auxiliary light-emitting layer to the cathode layer and in the vertical direction of the second light-emitting part, at least partially overlaps with the second light-emitting part, does not overlap with the first light-emitting part, and at least one The absolute value of the difference between the resistance value of the first resistance structure and the second light-emitting part and the resistance value of the first light-emitting part is smaller than the first preset value, so as to reduce the color of the display panel including the pixel structure. The crosstalk phenomenon improves the display quality of the display panel.

The invention proposes a method for measuring ligand content on the surface of quantum dots and a method for preparing quantum dot ink. Using this method to configure the quantum dot ink can ensure the uniformity of the quality of the quantum dot ink, and can ensure that the solubility, drying rate and coffee ring effect of different batches of quantum dot ink are the same, and can improve the pixel resolution of the quantum dot display panel. , Uniformity of lighting voltage and photoelectric efficiency.

The invention provides a method for measuring the ligand coverage on the surface of quantum dots, which can be used for quality assessment of quantum dots. If K i less than 2*10 ‑10 mol / cm 2 , the quality of quantum dots is not good, and K i Increase the value before proceeding with applications such as solution or ink dispensing. Adopt this method to determine quantum dot surface ligand coverage rate, result is accurate, easy to operate, further, can guarantee the stability of quantum dot surface ligand content by the method of the present invention, can guarantee the solubility of different batches of quantum dots, avoid The coffee ring effect caused by the different drying rates when the quantum dot solution is prepared into a film can improve the uniformity of the pixel resolution, turn-on voltage, and photoelectric efficiency of the quantum dot display panel.

The invention proposes a method for measuring the coverage ratio of ligands on the surface of quantum dots. Determination of coverage rate K of thiol-containing organic ligands on the surface of quantum dots by redox method i , which can be used to evaluate the quality of quantum dots. If K i less than 2*10 ‑10 mol / cm 2 , the quality of quantum dots is not good, and K i Increase the value before proceeding with applications such as solution or ink dispensing. Adopt this method to determine quantum dot surface ligand coverage rate, result is accurate, easy to operate, further, can guarantee the stability of quantum dot surface ligand content by the method of the present invention, can guarantee the solubility of different batches of quantum dots, avoid The coffee ring effect caused by the different drying rates when the quantum dot solution is prepared into a film can improve the uniformity of the pixel resolution, turn-on voltage, and photoelectric efficiency of the quantum dot display panel.

The invention proposes a method for measuring ligand content on the surface of quantum dots and a method for preparing quantum dot ink. Using this method to configure the quantum dot ink can ensure the uniformity of the quality of the quantum dot ink, and can ensure that the solubility, drying rate and coffee ring effect of different batches of quantum dot ink are the same, and can improve the pixel resolution of the quantum dot display panel. , Uniformity of lighting voltage and photoelectric efficiency.

The invention provides a method for measuring the content of ligands on the particle surface and a method for preparing quantum dot ink. Using this method to configure the quantum dot ink can ensure the uniformity of the quality of the quantum dot ink, and can ensure that the solubility, drying rate and coffee ring effect of different batches of quantum dot ink are the same, and can improve the pixel resolution of the quantum dot display panel. , Uniformity of lighting voltage and photoelectric efficiency.

The invention provides a method for measuring the ligand coverage on the surface of quantum dots, which can be used for quality assessment of quantum dots. If K i less than 2*10 ‑10 mol / cm 2 , the quality of quantum dots is not good, and K i Increase the value before proceeding with applications such as solution or ink dispensing. Adopt this method to determine quantum dot surface ligand coverage rate, result is accurate, easy to operate, further, can guarantee the stability of quantum dot surface ligand content by the method of the present invention, can guarantee the solubility of different batches of quantum dots, avoid The coffee ring effect caused by the different drying rates when the quantum dot solution is prepared into a film can improve the uniformity of the pixel resolution, turn-on voltage, and photoelectric efficiency of the quantum dot display panel.

The present invention relates to the field of display technology. The organic electroluminescent device described in the present invention comprises a first electrode layer, a first carrier functional layer, a light emitting layer and a second electrode layer which are sequentially stacked. The light-emitting layer includes a host material and a guest material, and by doping the guest material in the first carrier functional layer, the transfer efficiency of carriers can be effectively regulated, and thus the turn-on voltage of the organic electroluminescent device can be regulated. The organic electroluminescent device according to the present invention includes several pixel units distributed in an array, by forming a light-emitting layer guest material doping structure in the first carrier functional layer in the red sub-pixel unit and / or the green sub-pixel unit , to increase the turn-on voltage of the red sub-pixel unit and / or the green sub-pixel unit, reduce the difference in turn-on voltage, effectively alleviate the color shift problem of the organic electroluminescent device, and improve the color stability of the device.

The invention provides a method for measuring the ligand coverage on the surface of quantum dots, which can be used for quality assessment of quantum dots. If K i less than 2*10 ‑10 mol / cm 2 , the quality of quantum dots is not good, and K i Increase the value before proceeding with applications such as solution or ink dispensing. Adopt this method to determine quantum dot surface ligand coverage rate, result is accurate, easy to operate, further, can guarantee the stability of quantum dot surface ligand content by the method of the present invention, can guarantee the solubility of different batches of quantum dots, avoid The coffee ring effect caused by the different drying rates when the quantum dot solution is prepared into a film can improve the uniformity of the pixel resolution, turn-on voltage, and photoelectric efficiency of the quantum dot display panel.