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Flat-panel display based on adjustable optical filters

An optical filter, flat panel display technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of light loss, energy waste, light absorption loss, etc., and achieve the effect of eliminating polarization loss, realizing recycling, and improving energy efficiency

Inactive Publication Date: 2013-11-27
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has some obvious deficiencies in energy utilization: one is that the traditional absorbing polarizer that produces linearly polarized light will cause nearly 1 / 2 of the light absorption loss due to the use of the polarization state of light to modulate the light intensity; the other is that Because using an absorbing color filter to filter out other colors and let a specific color pass through, it will cause 2 / 3 of the light to be absorbed and lost
If material absorption, interface reflection and other factors are considered, the actual light energy utilization efficiency will generally not exceed 10%, which will bring great waste of energy

Method used

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  • Flat-panel display based on adjustable optical filters
  • Flat-panel display based on adjustable optical filters
  • Flat-panel display based on adjustable optical filters

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, this embodiment includes: a backlight module, a variable optical modulation device, a display optimization device and a protective case 1, wherein: the backlight module is arranged at the bottom of the protective case 1, and the variable optical modulation device is arranged in parallel on the backlight module The upper part of the display optimization device is arranged in parallel on the upper part of the variable optical modulation device, the distance between the bottom of the variable optical modulation device and the top of the backlight module is 0.8mm, and the distance between the bottom of the display optimization device and the top of the variable optical modulation device The distance is 0.8mm.

[0033] The protective case 1 is an open rectangular parallelepiped protective case.

[0034] The backlight module provides the variable optical modulation device with a narrow light divergence angle, and the spectrum of the emitted light i...

Embodiment 2

[0048] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that when the backlight module adopts a side-incidence backlight, it includes: a bottom reflector 2, a side reflector 3, a side light source 16, five light source reflectors 17, The light guide plate 18, the first diffusion film 5 and the prism film 6, wherein: the bottom reflector 2 is arranged on the bottom of the protective case 1, the light guide plate 18 is arranged on the bottom reflector 2, and the side reflector 3 is fixed on a place where the light source cannot be coupled The side of the protective case 1 is vertically connected to the bottom reflection plate 2, the side light source 16 is close to one side of the light guide plate 18, the first diffusion film 5 is arranged on the light guide plate 18, and the prism film 6 is arranged on the first diffusion film 5, The first diffusion film 5 and the prism film 6 completely cover the light guide plate 18, and five light source...

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Abstract

The invention relates to a flat-panel display based on adjustable optical filters, which belongs to the field of flat-panel display. The flat-panel display comprises a backlight module, a variable optical modulator, a display optimizer and a protective shell, wherein the variable optical modulator comprises a reflecting / transmitting mirror, a transparent substrate and a plurality of adjustable filters; each adjustable filter comprises three filter subunits; and each filter subunit comprises an upper reflecting mirror, a lower reflecting mirror, an upper electrode, a lower electrode and a voltage sensitive material film. The adjustable filters in the invention can adjust the center wavelength of the pass band and stop band according to the display demands, thereby achieving the goal of modulating the color and light intensity of the backlight. Since the multiplexing is introduced and the structures of the polaroid and color filter in the traditional TFT-LCD structure are replaced, the invention increases the energy utilization ratio, can greatly enhance the integration level of panel devices, and can reduce the thickness and cost of the panel.

Description

technical field [0001] The invention relates to a device in the technical field of image display, in particular to a flat panel display based on an adjustable optical filter. Background technique [0002] Flat panel display is a kind of display technology compared with the huge body of traditional picture tube display. big pillar. In the ten years after entering the 21st century, liquid crystal display technology has developed rapidly, and it has completely surpassed traditional display products based on cathode ray tubes (CRT) in the two major application fields of monitors and televisions. Among the current flat panel display products, liquid crystal displays occupy an absolute dominant position. In liquid crystal display (LCD) technology, the most mature is thin film transistor display technology (TFT-LCD). [0003] The principle of thin film transistor liquid crystal display (TFT-LCD) is to use liquid crystals to change the polarization state of incident light to cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/13357
Inventor 凌玉烨欧阳世宏高维璐项阿男苏翼凯
Owner SHANGHAI JIAOTONG UNIV