A blue-phase liquid crystal display with low driving voltage and continuously controllable viewing angle

Abstract

The invention discloses a blue phase liquid crystal display with a low drive voltage and a continuously-controllable visual angle. The display is composed of an upper polaroid, an upper lambda / 2 biaxial membrane, an upper lambda / 2 negative wave plate A, an upper lambda / 4 positive wave plate A, an upper glass substrate, a first Common electrode, a first protection layer, a blue phase liquid crystal layer, a second protection layer, a Pixel electrode layer, a transparent protrusion layer, a second Common electrode, a lower glass substrate, a lower lambda / 4 negative wave plate, a lower lambda / 2 positive wave plate A and a lower polaroid. The Pixel electrode layer comprises a first Pixel electrode 8 and a second Pixel electrode 9, wherein the first Pixel electrode 8 and the second Pixel electrode 9 are parallel to each other and are arranged at an interval. The blue phase liquid crystal display effectively reduces the drive voltage, and achieves continuous control over the visual angle by adjusting the voltage relation of the first Common electrode and the second Common electrode, and the drive voltage of the blue phase liquid crystal display is below 15 V and even below 10 V.

Description

technical field

[0001] The present invention designs a device in the technical field of liquid crystal display, specifically a blue-phase liquid crystal display device with low driving voltage and continuously controllable viewing angle Background technique

[0002] Information protection has been paid more and more attention by people. People need their portable devices such as mobile phones and tablet computers to have a function that can be controlled from a viewing angle so as to protect important information such as personal privacy in public places.

[0003] In recent years, blue-phase liquid crystal displays have developed rapidly, and people have discovered many advantages of blue-phase liquid crystal displays. For example, the production is simple, no alignment layer is required, the response speed is fast, the viewing angle is wide and the contrast ratio is high, etc. Making blue-phase liquid crystal displays is the goal that people are working hard for now. [0...

Examples

Embodiment 1

[0044] like figure 1 As shown in (a), it is a traditional FIS-driven blue-phase liquid crystal display structure, which includes from top to bottom: upper polarizer 1, upper λ / 2 biaxial film 2, upper λ / 2 negative A wave plate 3, upper λ / 4 Positive A wave plate 4, upper glass substrate 5, first protective layer 17, blue phase liquid crystal 7, second protective layer 18, first Pixel electrode 8 and second Pixel electrode 9, transparent raised layer 10, Common electrode 11, the lower glass substrate 12, the lower λ / 4 negative A wave plate 13, the lower λ / 2 positive A wave plate 14, and the lower polarizer 15.

[0045] like figure 1 As shown in (b), it is the blue-phase liquid crystal display structure of this embodiment, which includes from top to bottom: upper polarizer 1, upper λ / 2 biaxial film 2, upper λ / 2 negative A wave plate 3, upper λ / 4 Positive A wave plate 4, upper glass substrate 5, first Common electrode 6, first protective layer 17, blue phase liquid crystal 7, s...

Embodiment 2

[0068] Figure 6 According to the electrode structure of embodiment 2, the whole pixel is divided into two parts, the purpose is to make the viewing angle more symmetrical, and facilitate the connection of all pixel electrodes, and the corresponding transparent raised layer under the pixel electrodes is also changed in the same way.

[0069]The difference between this embodiment and Embodiment 1 is that the transparent protrusions 10 , the first Pixel electrodes 8 and the second Pixel electrodes 9 in this embodiment have a "horizontal and vertical" structure. That is to say, the overall shape of the transparent protrusion 10 covered with the first Pixel electrode 8 or the second Pixel electrode 9 on the second Common electrode 11 is viewed from above, and the entire pixel is divided into upper and lower parts. The first Pixel electrode and the second Pixel electrode are arranged in a horizontal comb-tooth shape with opposite directions and staggered arrangement. In the upper h...

Embodiment 3

[0076] Figure 10 It is the electrode structure diagram of the full pixel in embodiment 3. The electrode structure is a "zigzag" structure, and the purpose is also to realize the symmetry of the viewing angle. Correspondingly, the transparent raised layer under the electrode should be changed accordingly.

[0077] The difference between this embodiment and Embodiment 1 is that the transparent protrusion 10 , the first Pixel electrode 8 and the second Pixel electrode 9 in this embodiment have a zigzag structure, and the included angle of the "zigzag" is 90°. The corresponding transparent protrusions are also changed into zigzag transparent protrusions. The included angle of the word "Zhi" is also 90°. The first Pixel electrode 8 and the second Pixel electrode 9 are located above the transparent protrusion.

[0078] The parts not described in this embodiment are the same as those in Embodiment 1.

[0079] In this embodiment, in the wide viewing angle mode, the voltage applied...

technical field

[0001] The present invention designs a device in the technical field of liquid crystal display, specifically a blue-phase liquid crystal display device with low driving voltage and continuously controllable viewing angle Background technique

[0002] Information protection has been paid more and more attention by people. People need their portable devices such as mobile phones and tablet computers to have a function that can be controlled from a viewing angle so as to protect important information such as personal privacy in public places.

[0003] In recent years, blue-phase liquid crystal displays have developed rapidly, and people have discovered many advantages of blue-phase liquid crystal displays. For example, the production is simple, no alignment layer is required, the response speed is fast, the viewing angle is wide and the contrast ratio is high, etc. Making blue-phase liquid crystal displays is the goal that people are working hard for now. [0...

Examples

Embodiment 1

[0044] like figure 1 As shown in (a), it is a traditional FIS-driven blue-phase liquid crystal display structure, which includes from top to bottom: upper polarizer 1, upper λ / 2 biaxial film 2, upper λ / 2 negative A wave plate 3, upper λ / 4 Positive A wave plate 4, upper glass substrate 5, first protective layer 17, blue phase liquid crystal 7, second protective layer 18, first Pixel electrode 8 and second Pixel electrode 9, transparent raised layer 10, Common electrode 11, the lower glass substrate 12, the lower λ / 4 negative A wave plate 13, the lower λ / 2 positive A wave plate 14, and the lower polarizer 15.

[0045] like figure 1 As shown in (b), it is the blue-phase liquid crystal display structure of this embodiment, which includes from top to bottom: upper polarizer 1, upper λ / 2 biaxial film 2, upper λ / 2 negative A wave plate 3, upper λ / 4 Positive A wave plate 4, upper glass substrate 5, first Common electrode 6, first protective layer 17, blue phase liquid crystal 7, s...

Embodiment 2

[0068] Figure 6 According to the electrode structure of embodiment 2, the whole pixel is divided into two parts, the purpose is to make the viewing angle more symmetrical, and facilitate the connection of all pixel electrodes, and the corresponding transparent raised layer under the pixel electrodes is also changed in the same way.

[0069]The difference between this embodiment and Embodiment 1 is that the transparent protrusions 10 , the first Pixel electrodes 8 and the second Pixel electrodes 9 in this embodiment have a "horizontal and vertical" structure. That is to say, the overall shape of the transparent protrusion 10 covered with the first Pixel electrode 8 or the second Pixel electrode 9 on the second Common electrode 11 is viewed from above, and the entire pixel is divided into upper and lower parts. The first Pixel electrode and the second Pixel electrode are arranged in a horizontal comb-tooth shape with opposite directions and staggered arrangement. In the upper h...

Embodiment 3

[0076] Figure 10 It is the electrode structure diagram of the full pixel in embodiment 3. The electrode structure is a "zigzag" structure, and the purpose is also to realize the symmetry of the viewing angle. Correspondingly, the transparent raised layer under the electrode should be changed accordingly.

[0077] The difference between this embodiment and Embodiment 1 is that the transparent protrusion 10 , the first Pixel electrode 8 and the second Pixel electrode 9 in this embodiment have a zigzag structure, and the included angle of the "zigzag" is 90°. The corresponding transparent protrusions are also changed into zigzag transparent protrusions. The included angle of the word "Zhi" is also 90°. The first Pixel electrode 8 and the second Pixel electrode 9 are located above the transparent protrusion.

[0078] The parts not described in this embodiment are the same as those in Embodiment 1.

[0079] In this embodiment, in the wide viewing angle mode, the voltage applied...

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