Liquid crystal display device with switchable viewing angle and method for switching viewing angle
A liquid crystal display device and viewing angle technology, which is applied in static indicators, instruments, nonlinear optics, etc., to achieve the effects of reducing screen contrast, reducing brightness at large viewing angles, and narrowing viewing angles
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no. 1 example
[0044] Figure 6 It is a schematic cross-sectional view of a liquid crystal display device at a wide viewing angle in the first embodiment of the present invention, Figure 7 for Figure 6 Schematic diagram of the cross-section of a liquid crystal display device at a narrow viewing angle, please refer to Figure 6 and Figure 7 , the liquid crystal display device includes a display panel 10 , a light-adjusting liquid crystal film 20 and a backlight 30 . The backlight 30 is used to provide a light source for display to the display panel 10 . The light-adjusting liquid crystal film 20 is disposed between the display panel 10 and the backlight 30 , and the light-adjusting liquid crystal film 20 can adjust the backlight emission angle of the light emitted by the backlight 30 after passing through the display panel 10 .
[0045] The display panel 10 includes a first substrate 11 , a second substrate 12 disposed opposite to the first substrate 11 , and a liquid crystal layer 13 ...
no. 2 example
[0054] Figure 8 It is a schematic cross-sectional view of a liquid crystal display device at a wide viewing angle in the second embodiment of the present invention, Figure 9 for Figure 8 Schematic diagram of the cross-section of a liquid crystal display device at a narrow viewing angle, please refer to Figure 8 and Figure 9 The main difference between this embodiment and the above-mentioned first embodiment is that two light-adjusting liquid crystal films 20 are provided between the display panel 10 and the backlight source 30 in this embodiment, and the structure of each light-adjusting liquid crystal film 20 can be referred to above first embodiment.
[0055] In this embodiment, the arrangement directions of the prism layers on the two light-adjusting liquid crystal films 20 are perpendicular to each other, that is, the plurality of prisms 212 in the prism layer of one of the light-adjusting liquid crystal films 20 (lower light-adjusting liquid crystal film) are alon...
no. 3 example
[0060] Figure 10 It is a schematic cross-sectional view of the liquid crystal display device in the third embodiment of the present invention, please refer to Figure 10 The main difference between this embodiment and the above-mentioned second embodiment is that the two light-adjusting liquid crystal films 20 provided in this embodiment, one of the light-adjusting liquid crystal films 20 (the lower light-adjusting liquid crystal film) is arranged between the display panel 10 and the Between the backlight sources 30 , another light-regulating liquid crystal film 20 (upper light-regulating liquid crystal film) is set above the display panel 10 , so that the two light-regulating liquid crystal films 20 are respectively set on the upper and lower sides of the display panel 10 .
[0061] When a certain voltage is applied to the two light-adjusting liquid crystal films 20, all the liquid crystal molecules in each light-adjusting liquid crystal film 20 stand up. The light of the d...
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