Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel includes: including: a first base substrate, a liquid crystal layer, a waveguide layer, a grating layer, a quantum dot color filter layer, a first electrode and a second electrode, and the first electrode and the second electrode are used for Adjusting the refractive index of the liquid crystal layer; the grating layer is used to control light coupling out of the waveguide layer, and the coupling efficiency of the waveguide layer for coupling out light depends on the refractive index of the liquid crystal layer and the refractive index of the grating layer The difference is determined. In the present invention, there is no need to set polarizers in the display panel, which avoids the problem of depolarization of quantum dots, so that quantum dot materials can be applied to liquid crystal display devices; the transmittance of the display panel is improved; and the thickness of the liquid crystal box can be set The thinner, which improves the response time of the liquid crystal.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. Background technique [0002] In the field of display technology, a liquid crystal display device includes a backlight source and a display panel. The display panel includes an array substrate and a color filter substrate oppositely arranged. A liquid crystal layer is arranged between the array substrate and the color filter substrate. Polarizers are arranged on the back side. The deflection of liquid crystal is controlled by voltage and controlled by two layers of polarizers to achieve gray scale display. [0003] In the prior art, the color resistance in the color filter substrate can be made of quantum dot material, and the use of quantum dot material as the color resistance can improve the color gamut of the display panel, but the quantum dot material will destroy the polarization state of the incident light, thus The problem o...

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Problems solved by technology

[0003] In the prior art, the color color resistance in the color filter substrate can be made of quantum dot material, and the use of quantum dot material as the color color resistance can improve the color gamut of the display panel, but the quantum dot material will destroy the polarization state of the incident light, thus Causes the problem of depolarization of quantum dots, so quantum dot materials cannot be applied to liquid crystal display devices

[0004] The use of polarizers in the display panels of liquid crystal display devices in the prior art will lead to very low transmittance of the liquid crystal display device (for example, the transmittance is about 7%) and the thickness of the liquid crystal cell is relatively large (for example, 3um-5um) , and a larger cell thickness will reduce the response time of the liquid crystal

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