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Polarization state electrically-controllable LED light source, LED display panel and 3D display

A technology of LED light source and polarization state, which is applied in the direction of electric light source, static indicator, optical element used to change the spectral characteristics of emitted light, etc., can solve the problem of low display resolution of LED display screen, and achieve the improvement of display resolution Effect

Inactive Publication Date: 2012-08-01
SHENZHEN AOTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a polarization state electrically controllable LED light source, aiming to solve the problem of low display resolution of the LED display screen using the existing LED light source in the current 3D display field

Method used

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  • Polarization state electrically-controllable LED light source, LED display panel and 3D display
  • Polarization state electrically-controllable LED light source, LED display panel and 3D display

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Embodiment 1

[0017] figure 1 It shows a schematic structural diagram of the polarization state electrically controllable LED light source provided by the first embodiment of the present invention, figure 2 A schematic diagram of the polarization state of the light emitted by the LED light source with electrically controllable polarization state provided by the first embodiment of the present invention is shown. For the convenience of description, only the part related to this embodiment is shown.

[0018] Please combine the attached figure 1 As shown, the LED light source with electrically controllable polarization state includes an LED luminous body 1, and the LED luminous body 1 mainly includes an LED chip and a transparent shell encapsulating the chip. ) A linear polarizer 2 and a liquid crystal film 3 are stacked along the central axis of the outgoing light. A first transparent electrical segment plate 4 and a second transparent electrical segment plate 5 are respectively provided o...

Embodiment 2

[0021] The embodiment of the present invention further elaborates on the above-mentioned embodiment. The control circuit 6 may include an LED anode input terminal 61 , a common reference ground input terminal (referred to as “GND terminal”) 62 and a polarization control signal input terminal 63 . Among them, the first transparent electric section plate 4 can be connected to the GND terminal 62, and the second transparent electric section plate 5 can be connected to the polarization state control signal input terminal 63. By applying a voltage control signal to the polarization state control signal input terminal 63, the first transparent electric section plate can be controlled. and the voltage between the second transparent segment plate, and then control the light transmission state of the liquid crystal film 3, and change or maintain the polarization direction of the incident linearly polarized light.

[0022] In the embodiment of the present invention, the LED illuminant 1 ...

Embodiment 3

[0024] In the field of 3D display, when the left and right eye images are respectively displayed through linearly polarized light in the horizontal and vertical directions, the viewer needs to wear corresponding polarized glasses to see the 3D effect, but when the viewer twists his head, it will produce The image is distorted, affecting viewing. Therefore the embodiment of the present invention has carried out further improvement to above-mentioned embodiment 1 or 2, further arranges a quarter-wave plate 7 in the light-emitting direction of liquid crystal film 3, and its fast axis direction 71 and vertical linearly polarized light 32 and The polarization directions of the linearly polarized light 31 in the horizontal direction are respectively positive and negative at an angle of 45 degrees. The linearly polarized light 32 in the vertical direction that emerges from the liquid crystal film 3 passes through the quarter wave plate 7 and becomes left-handed circularly polarized l...

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Abstract

The invention is suitable for being used in the LED display field, and provides a polarization state electrically-controllable LED light source. The LED light source includes an LED chip and a transparent casing for packaging the LED chip inside; a linear polaroid and a liquid crystal membrane are sequentially overlapped in the emergent light central axis direction on the transparent casing; a first transparent electric section plate and a second electric section plate are arranged on a light incidence surface and a light emergence surface of the liquid crystal membrane respectively; the LED chip, the first transparent electric section plate and the second electric section plate are connected with a control circuit of the LED light source respectively. According to the invention, the LED light source can send out two linearly polarized lights orthogonal in polarized direction. The light emergence polarization state controllable LED light source is used in an LED display panel, and can control the polarization state of the LED light source in a time-sharing manner to display left and right eye images in the time-sharing manner; compared with the traditional LED display panels which adopts the row interval, line interval or adjacent point interval manner, the LED display panel using the polarization state electrically-controllable LED light source has the advantages that the display resolution can be doubled, and the 3D display in the full resolution is realized.

Description

technical field [0001] The invention belongs to the field of LED display, and in particular relates to an electrically controllable LED light source, an LED display panel and a 3D display. Background technique [0002] Polarized light is one of the main conditions for realizing 3D display. Nowadays, in the field of LED display, when using polarized light to realize 3D display, the method used is to cover two sets of linear polarizers with orthogonal polarization directions or two sets of circular polarizers with different rotation directions on the mask of the display screen. The two sets of polarizers are distributed in the form of interlaced intervals, alternate column intervals or adjacent dot intervals. The LEDs below the two sets of polarizers display images for the left and right eyes respectively. Corresponding polarized glasses are used when watching, so as to achieve the effect of seeing different images for the left and right eyes. Effect. However, because the le...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V9/14G09F9/33G09G3/32
Inventor 谢明璞吴涵渠吴振志王昊翔
Owner SHENZHEN AOTO ELECTRONICS
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