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An optically addressable matrix display

A matrix display and addressing technology, applied to static indicators, instruments, etc., can solve the problem of high impedance of photosensitive elements and achieve the effect of simple structure

Inactive Publication Date: 2006-03-22
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the unselected rows, the selected light emitting elements produce no light, and thus the impedance of the photosensitive elements of the unselected pixels is high

Method used

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  • An optically addressable matrix display
  • An optically addressable matrix display
  • An optically addressable matrix display

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] figure 1 An embodiment of a matrix display device with optically addressable display elements or pixels is shown.

[0047] The matrix display comprises a matrix of pixels Pij (P11-Pmn) connected to the intersection of an optical waveguide LWj (LW1-LWn) and two sets of row electrodes REi1, REi2. The symbol i represents the row number, and the symbol j represents the column number of the matrix display. The row electrodes REi1 and REi2 extend in the x direction, and the optical waveguide LWj extends in the y direction. In a switched matrix display, the x and y directions can be interchanged.

[0048] The selection driver SD supplies the first row voltage Vi1 to the first row electrode REi1 and supplies the second row voltage Vi2 to the second row electrode REi2. The selection voltage SVi is generated between the first row electrode REi1 and the second row electrode REi2 of the i-th row.

[0049] The data driver DD receives the input data ID to be displayed, and the da...

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Abstract

A matrix display device comprises a matrix of optically addressable pixels (Pij) with a light sensitive element (LSij) which receives data light (Lj) to control a state of the light sensitive element (LSij) depending on the data light (Lj), and a pixel light generating element (LGij) which generates an amount of pixel light (LMij) depending on the state of the light sensitive element (LSij). A select driver (SD) supplies select voltages (SVi) to lines (LRi) of the pixels (Pij), the select voltages (SVi) having a level which does not allow the amount of pixel light (LMij) of the pixel light generating elements (LGij) to be substantially changed for not selected lines (LRi), the select voltages (SVi) having a level which does allow the amount of pixel light (LMij) of the pixel light generating elements (LGij) to be changed for a selected one of the lines (LRi). At least one data light generating device (ALj; LAS) directs the data light (Lj) to the light sensitive element (LSij). A data driver (DD) receives input data (ID) representing an image and controls the at least one data light generating element (ALj; LAS) to produce an amount of light in accordance with the input data (ID).

Description

technical field [0001] The invention relates to an active matrix display, and a display device comprising the matrix display. Background technique [0002] US-B-6215462 discloses a matrix display device with rows of pixels. Row-by-row selection of the rows of the matrix display. Each row is connected to an optical waveguide that transmits light generated by selected light-emitting elements into each row of pixels. A particular row is selected if the associated selected light emitting element produces light; all other rows are not selected because their associated selected light emitting element does not produce light. [0003] Each pixel includes a photosensitive element and a pixel light-emitting element connected in series. Data voltages corresponding to image data to be displayed are provided into the series structure via the column conductors. In the selected row of pixels, the light generated by the selected light-emitting elements related to the selected row reache...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/02
CPCG09G3/02G09G2310/0275G09G3/2085G09G2360/142G09G3/20
Inventor M·P·C·M·克里恩F·P·M·布德泽拉亚尔J·J·L·霍彭布罗维斯M·马伊亚尼J·J·W·M·罗信克B·A·萨特斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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