Blue phase liquid crystal display panel and liquid crystal display device

Abstract

The invention discloses a blue phase liquid crystal display panel and a liquid crystal display device. The blue phase liquid crystal display panel comprises a first substrate, a second substrate and a blue phase liquid crystal layer positioned between the two substrates, wherein a first electrode is arranged on the first substrate, a second electrode is arranged on the second substrate, a plurality of reflecting parts are arranged between the first substrate and the second substrate, and each reflecting part comprises a first reflecting surface and a second reflecting surface. When light emitted by a backlight source radiates to the liquid crystal display panel, the light is firstly reflected by the first reflecting surface of the reflecting part, the light after the first reflection is radiated to the adjacent reflecting part via the blue phase liquid crystal layer and secondly reflected by the second reflecting surface of the adjacent reflecting part, when different voltages are applied on the first electrode and the second electrode, a vertical electric field is formed between the first electrode and the second electrode, and the blue phase liquid crystal layer can change the phase of the light passing through the blue phase liquid crystal layer; when no voltage exists between the first electrode and the second electrode, the blue phase liquid crystal layer can not change the phase of the light passing through the liquid crystal layer.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a blue-phase liquid crystal display panel and a liquid crystal display with the blue-phase liquid crystal display panel. Background technique [0002] The liquid crystal display panel is the main component of a liquid crystal display. Usually, a liquid crystal display panel is formed by laminating a thin film transistor (Thin Film Transistor, TFT) array substrate with another color filter (Color Filter, CF) substrate, and then dripping liquid crystal between the two substrates. [0003] Blue phase (Blue Phase, BP) liquid crystal is a phase state with special properties in liquid crystal. The blue-phase liquid crystal can change the isotropic refractive index into anisotropic refractive index according to the magnitude of the applied voltage. The liquid crystal display panel using the blue-phase liquid crystal can greatly improve its response speed, and does not ne...

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Problems solved by technology

[0008] However, since the transverse electric field E can only affect the blue-phase liquid crystal 23 near the pixel electrode 211 and the common electrode 212, the transmittance of the blue-phase liquid crystal display panel 200 is low, and the electric field strength generated is relatively weak. The blue phase liquid crystal display panel 200 of the electric field E usually requires a relatively large driving voltage

[0009] The reason why the current liquid crystal display panel using blue phase liquid crystals cannot use the vertical electric field is: after the voltage is applied to the liquid crystal display panel, the vertical electric field formed between the pixel electrode on the array substrate of the liquid crystal display panel and the common electrode on the opposite substrate Under the action of , the blue phase liquid crystal will be "stretched" in the vertical direction, and after the polarized light passes through the blue phase liquid crystal stretched in the vertical direction, there is no phase change, and the polarization state of the polarized light after passing through the blue phase liquid crystal It is the same as the case where no voltage is applied to the blue phase liquid crystal display panel, and because the absorption axes of the upper and lower polarizers of the liquid crystal display panel are perpendicular to each other, the light emitted by the backlight cannot pass through the liquid crystal display panel, so that the bright state of the liquid crystal display panel cannot be obtained Therefore, the display of each gray scale of the blue phase liquid crystal display panel cannot be realized only by such a vertical electric field

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