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A device for placement in front of a display device

A technology for a display device and a liquid crystal display device, which can be applied to parts of color TVs, parts of TV systems, TVs, etc., and can solve problems such as unpleasantness

Inactive Publication Date: 2012-02-29
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in an unpleasant contrast to the dark screen hanging on the wall whenever the TV cuts out
Some TVs with backlight capability offer the option to turn the backlight on for a cozy atmosphere during the TV off state, but the TV screen itself remains black

Method used

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  • A device for placement in front of a display device
  • A device for placement in front of a display device
  • A device for placement in front of a display device

Examples

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Embodiment Construction

[0015] Several embodiments of the present invention will now be described in more detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present invention. However, the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments given here. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the invention to those skilled in the art. The embodiments do not limit the invention, but the invention is only limited by the appended patent claims. In addition, the terms used in the detailed description of the specific embodiments illustrated in the drawings are not intended to limit the present invention.

[0016] The invention described here relates to an improvement in the design of the display device screen during the off or standby state. The display device may be, for example, a television sc...

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PUM

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Abstract

A system comprising a device for placement in front of a display device, such as a TV screen,to change the optical properties of light received by a user observing said display device, when the display device is in an off state or standby state, while when the display device is in an on state, the device appears transparent.

Description

Technical field [0001] The present invention generally relates to the field of displays. More specifically, the present invention relates to a device for placing in front of a display device, which is configured to optically affect the properties of light received by a user when the user views the display device. Background technique [0002] The screen size of the television is steadily increasing, and since high contrast in operation is required, the television has a characteristic of an almost black screen in the off or standby state. [0003] In fact, the increasing demand for high daylight contrast of TV screens has led to the development of many measures for contrast enhancement (phosphor coating, application of black pigments between RGB pixels, glass tinting, etc.). The overall effect of these contrast enhancement measures is to reduce the albedo of the TV screen. Now, this has been pushed to the point where the TV screen is almost completely black. In other words, a lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/72
CPCH04N5/64H04N5/72
Inventor M.温特H.胡梅尔W.O.布德H.P.勒布尔V.魏勒T.于斯特尔J.梅里基
Owner KONINK PHILIPS ELECTRONICS NV