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Visual angle switchable liquid crystal display device and driving method thereof

A liquid crystal display device and viewing angle technology, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of increased box thickness and poor viewing angle switching effect, and achieve low thickness and power consumption, good anti-peeping effect, and good wide viewing angle Show the effect of the effect

Pending Publication Date: 2021-03-26
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a liquid crystal display device with a switchable viewing angle and its driving method, so as to solve the problems of increased cell thickness and poor viewing angle switching effect in the prior art

Method used

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  • Visual angle switchable liquid crystal display device and driving method thereof
  • Visual angle switchable liquid crystal display device and driving method thereof
  • Visual angle switchable liquid crystal display device and driving method thereof

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Embodiment 1

[0040] figure 1 It is a schematic structural diagram of a liquid crystal display device in Embodiment 1 of the present invention, figure 2 is a schematic plan view of the second dimmer in Embodiment 1 of the present invention, image 3 is a schematic cross-sectional structure diagram of the second dimmer in Embodiment 1 of the present invention, Figure 4 It is a waveform diagram of signals applied to the backlight module in Embodiment 1 of the present invention.

[0041] like Figure 1 to Figure 4 As shown, a liquid crystal display device with switchable viewing angle provided by Embodiment 1 of the present invention includes a display panel, a first dimmer 50 and a backlight module 70, and the display panel and the first dimmer 50 are arranged in the backlight module. 70, the first dimmer 50 is arranged between the display panel and the backlight module 70, and the first dimmer 50 is used to reduce the angular range of the light emitted by the backlight module 70 passing...

Embodiment 2

[0063] Figure 5 It is a schematic cross-sectional structure diagram of the second dimmer in the second embodiment of the present invention. like Figure 5 As shown, the liquid crystal display device with a switchable viewing angle and its driving method provided by Embodiment 2 of the present invention are the same as Embodiment 1 ( Figure 1 to Figure 4 ) in the liquid crystal display device with switchable viewing angle and its driving method are basically the same, the difference is that in this embodiment, the projection of the electrode strip of the pixel electrode 24 on the array substrate 20 is located between two adjacent first astigmatism strips 211 between projections on the array substrate 20 . Preferably, the center of the electrode strip of the pixel electrode 24 is aligned with the center of the gap between two adjacent first diffusing strips 211 .

[0064] The width of the first astigmatism strip 211 is a1, the gap between two adjacent first astigmatism stri...

Embodiment 3

[0068] Image 6 It is a schematic structural diagram of a liquid crystal display device in Embodiment 3 of the present invention. like Image 6 As shown, the liquid crystal display device with switchable viewing angle and its driving method provided by the third embodiment of the present invention are the same as those in the first embodiment ( Figure 1 to Figure 4 ) in the liquid crystal display device with switchable viewing angle and its driving method are basically the same, the difference is that in this embodiment, the brightness enhancement film 60 directly covers the side of the backlight module 70 facing the first dimmer 50 . That is, the brightness enhancement film 60 and the backlight module 70 form an integral structure, and the brightness enhancement film 60 and the backlight module 70 are combined together. By directly covering the backlight module 70 with the brightness enhancement film 60 , the brightness of the liquid crystal display device can be improved,...

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Abstract

The invention discloses a visual angle switchable liquid crystal display device and a driving method thereof. The visual angle switchable liquid crystal display device comprises a display panel, a first dimmer and a backlight module; the display panel and the first dimmer are arranged on the light emitting side of the backlight module, and the first dimmer is arranged between the display panel andthe backlight module; the first light modulator is used for reducing the angle range of light emitted by the backlight module penetrating through the first light modulator. The display panel comprises a color film substrate, an array substrate opposite to the color film substrate and a liquid crystal layer arranged between the color film substrate and the array substrate, and a second dimmer is arranged on the array substrate and used for scattering light penetrating through the second dimmer. In the wide viewing angle mode, the backlight module emits first light, in the narrow viewing anglemode, the backlight module emits second light, and the brightness of the first light is larger than that of the second light. The function of switching the wide viewing angle and the narrow viewing angle of the single box can be achieved, the structure is simple, and the peep-proof effect is good.

Description

technical field [0001] The invention relates to the field of liquid crystal display technology, in particular to a liquid crystal display device with a switchable viewing angle and a driving method thereof. Background technique [0002] With the continuous advancement of liquid crystal display technology, the viewing angle of the display has been expanded from about 120° to more than 160°. While enjoying the visual experience brought by the large viewing angle, people also hope to effectively protect commercial secrets and personal privacy. Avoid commercial loss or embarrassment caused by information leakage on the screen. Therefore, in addition to the requirement for a wide viewing angle, in many occasions, the display device is also required to have a function of switching between a wide viewing angle and a narrow viewing angle. [0003] In the prior art, a viewing angle control electrode on one side of a color filter substrate (Color Filter, CF) is used to apply a vertic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/13357
CPCG02F1/1323G02F1/133606
Inventor 钟德镇刘显贺姜丽梅
Owner KUSN INFOVISION OPTOELECTRONICS
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