Wide and narrow viewing angle switching display device

A display device and viewing angle technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as screen flickering, glare, and inconvenient viewing, and achieve the effect of maintaining consistency, high luminous brightness, and bright and clear patterns

Active Publication Date: 2018-11-16
KUSN INFOVISION OPTOELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the light leakage from the left and right sides of the liquid crystal display panel, people will have a dazzli

Method used

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  • Wide and narrow viewing angle switching display device
  • Wide and narrow viewing angle switching display device
  • Wide and narrow viewing angle switching display device

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[0028] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0029] It should be understood that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more. Unless the context clearly requires, the words "including", "including" and other similar words in the entire specification and claims s...

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Abstract

The invention discloses a wide and narrow viewing angle switching display device. The device comprises a display panel and a backlight module located on the back surface of the display panel; the backlight module comprises a back plate, a plurality of lamp strips located on the back plate, a diffusion plate located below the display panel and a glue frame around the display panel, the lamp stripsare evenly distributed on the bottom surface of the back plate, and LED lamps in each lamp strip are arranged with a preset angle; in a first display mode, all the LED lamps in each lamp strip are turned on, so that light emitted from all the light strips is diverged in different directions; in a second display mode, partial LED lamps in each lamp strip are turned on, so that light emitted from all the light strips is gathered in the center of the display panel, and current flowing through each lamp strip can be set to make the light-emitting brightness of all the lamp strips equal in the first display mode and the second display mode. The display modes are switched by controlling the quantity of the turned-on and turned-off LED lamps, the display brightness is controlled by controlling the magnitude of the current flowing through the LED lamps, and the good film watching effect is kept.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a direct-lit backlight wide-narrow viewing angle switching display device. Background technique [0002] In recent years, liquid crystal displays (LCDs) have been widely used in various information and communication consumer products due to their advantages of small size, high image quality, no radiation, and low driving voltage. [0003] Since the liquid crystal display panel in the LCD itself does not emit light, a backlight module needs to be installed on the back of the liquid crystal display panel as a backlight source to display images normally. With the rapid development of light source technology in backlight modules, light-emitting diodes (LEDs) are gradually being widely used due to their low energy consumption, small size, long life, and low temperature rise. Currently, most commonly used liquid crystal displays use LED backlight modules. in the form of a backlig...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02F1/13
CPCG02F1/1323G02F1/133603G02F1/133608
Inventor 杨金辉赖信杰朱莹季国飞
Owner KUSN INFOVISION OPTOELECTRONICS
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