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Liquid crystal display device with switchable viewing angle

A technology of liquid crystal display device and viewing angle, which is applied in static indicators, nonlinear optics, instruments, etc., and can solve the problems of affecting the anti-peep effect, reducing the taste of anti-peep mode, and inverting the gray scale of anti-peep mode.

Pending Publication Date: 2019-06-28
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Many liquid crystal display devices with switchable viewing angles that have been disclosed so far have the problem of grayscale inversion under large viewing angles in the anti-peeping mode, especially in images with relatively high contrast (such as black and white tone text interfaces), due to grayscale inversion. Yes, at large viewing angles, the anti-peep effect will be affected by the gray scale inversion, which will reduce the taste of the anti-peep mode, and even affect the anti-peep effect (the screen after the gray scale inversion can still recognize the content)

Method used

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  • Liquid crystal display device with switchable viewing angle

Examples

Experimental program
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Effect test

no. 1 example

[0041] Please refer to Figure 4 to Figure 8 The liquid crystal display device with switchable viewing angle provided by the first embodiment of the present invention includes a display panel, and the display panel includes a lower substrate 100 , an upper substrate 200 opposite to the lower substrate 100 , and a liquid crystal located between the lower substrate 100 and the upper substrate 200 Layer 300. Wherein, the lower substrate 100 may be a thin film transistor array substrate (ie, an array substrate), and the upper substrate 200 may be a color filter substrate (ie, a color filter substrate).

[0042] The lower substrate 100 includes a base substrate 110 and scan lines 120 , data lines 130 , switching elements 140 , pixel electrodes 150 and common electrodes 160 disposed on a side of the base substrate 110 facing the liquid crystal layer 300 . The switching element 140 is, for example, a thin film transistor (TFT). The lower substrate 100 is defined by a plurality of s...

no. 2 example

[0066] Please refer to Figure 9 The difference between the liquid crystal display device with switchable viewing angle provided by the second embodiment of the present invention and the above-mentioned first embodiment is that the pixel electrode 150 in each pixel unit includes four electrode strips 151 arranged side by side, and the extension of each electrode strip 151 The direction is consistent with the extending direction of the data line 130 . In this embodiment, the ratio of the area of ​​the first region R1 to the area of ​​the opening region R in each pixel unit is 0.8, which is larger than that of the first embodiment. By comparing the first embodiment and the second embodiment, it can be seen that the pixel electrode 150 The larger the area of ​​(the first region R1 ), the larger the transmittance (Tr) of the display panel.

no. 3 example

[0068] Please refer to Figure 10 The difference between the liquid crystal display device with switchable viewing angle provided by the third embodiment of the present invention and the above-mentioned first embodiment is that the opening region R in each pixel unit is divided into the first region R1 near the scanning line 120 below it and The second region R2 close to the scanning line 120 on its upper side, that is, the second region R2 is located in the upper half of the opening region R, that is, the lower end of the pixel electrode 150 (first region R1) of each pixel unit is close to the scanning line on the lower side 120 , the left and right sides of the pixel electrode 150 (first region R1 ) are respectively close to the data lines 130 on the left and right sides of the pixel unit, and no pixel electrode 150 is provided above the opening region R.

[0069] For example, the length of the opening region R along the extending direction of the data line 130 is 115 micron...

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Abstract

The invention discloses a liquid crystal display device with a switchable viewing angle. The liquid crystal display device comprises a lower substrate, an upper substrate opposite to the lower substrate and a liquid crystal layer located between the lower substrate and the upper substrate, wherein multiple scanning lines, multiple data lines and multiple pixel units distributed in an array mannerare arranged on the lower substrate; a pixel electrode is arranged in each pixel unit; a viewing angle control electrode is arranged on the upper substrate; each pixel unit is provided with an open region; the region occupied inwards with an outer contour of the pixel electrode in the open region as a boundary in each pixel unit is defined as a first region, and the range except the first region in the open region is defined as a second region; a ratio of the area of the first region to the area of the open region in each pixel unit is 0.4-0.9. The liquid crystal display device with the switchable viewing angle is not prone to gray scale inversion at a large viewing angle, can also effectively widen the range of a peep-preventing angle in a narrow viewing angle mode and has a better peep-preventing effect.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display device with a switchable viewing angle. Background technique [0002] Liquid crystal display (liquid crystal display, LCD) has the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and occupies a dominant position in the field of flat panel display. [0003] The current liquid crystal display devices are gradually developing in the direction of wide viewing angles, whether it is mobile terminal applications, desktop monitors or notebook computers, but in addition to wide viewing angles, in many occasions it is also necessary for display devices to switch between wide viewing angles and narrow viewing angles function. Therefore, in addition to the demand for a wide viewing angle, displays that can be switched or adjusted to a narrow vie...

Claims

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Application Information

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IPC IPC(8): G02F1/13G02F1/133G02F1/1335G02F1/1343G02F1/1362
Inventor 钟德镇苏子芳沈家军
Owner KUSN INFOVISION OPTOELECTRONICS