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Display device with integrated photovoltaic cells and improved brightness

A technology for display devices and photovoltaic cells, applied in the fields of display devices and backlighting display screens

Inactive Publication Date: 2014-03-26
怀西普斯公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, it does not allow the light source for backlighting to be integrated directly on the substrate controlling the field effect transistors that make up the liquid crystals that make up the screen pixels

Method used

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  • Display device with integrated photovoltaic cells and improved brightness
  • Display device with integrated photovoltaic cells and improved brightness
  • Display device with integrated photovoltaic cells and improved brightness

Examples

Experimental program
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Embodiment Construction

[0029] Figures 1 to 9 Embodiments of the present invention are schematically illustrated without limiting the present invention. It should be understood that all the embodiments shown and all variations can be combined with each other. These figures do not show certain components that are essential to the operation of the display screen but are well understood by those skilled in the art, especially the field effect transistor layers that are important for producing the image on the liquid crystal screen.

[0030] figure 1 The first embodiment of the present invention is schematically shown. The figure shows a cross section through a display screen according to the invention. The display screen 1 according to the invention comprises an array 3 of image areas 4 , which may be pixels, which are backlit by a generally planar light source 2 arranged behind the array 3 of image areas 4 . The planar light source 2 may be a diffuser plate. In a variant of these embodiments, the...

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PUM

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Abstract

The invention relates to a display device (1), in particular a digital display screen, including integrated photovoltaic cells and comprising: (a) an array (3) of image zones (4) emitting light or backlit by a light source (2) placed behind the array (3) of image zones (4); (b) an array (6) formed by a plurality of photovoltaic cells (7, 8) and a plurality of holes (13), in which array two adjacent photovoltaic cells form a hole; and (c) a lens array (5) that can be used to focus the light emitted by the image zones (4) in the hole between two adjacent photovoltaic cells (7, 8). The device (1) is characterised in that the lens array (5) is positioned between the array (3) of image zones (4) and the array (6) of photovoltaic cells (7, 8).

Description

technical field [0001] The present invention relates to the field of display devices, and more particularly to the field of backlit display screens. Such screens comprising a large number of backlit pixels have long been known and are used in televisions, computers and small-sized portable devices such as mobile phones, game consoles and calculators. Background technique [0002] In this context the term "backlit" image area refers to an image area located in front of a light source illuminated from behind by the light source. The image area may be, for example, a pixel, a plurality of pixels, or a portion of a pixel (eg, a liquid crystal pixel), or a strip of film on which an image is printed. In backlit screens, diffuse light sources are located behind the pixel planes in order to improve contrast. [0003] Portable devices are generally powered by batteries, where the duration between charges is an important factor for ease of use. In order to prolong the duration betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22H04N13/00G02F1/1335H01L31/042
CPCH01L27/1427Y02E10/52G09G2320/0693G02F2001/133562G02B3/0006G02F2001/13324H01L31/048H01L31/0524G02F1/133305G02F1/133526H01L31/0468H01L31/0543Y10T29/49002Y10T156/1089G02F1/13324G02F1/133562H04N13/00G02F1/1335H01L31/042
Inventor J·吉尔贝P·卡迪R·塔泽
Owner 怀西普斯公司