公开(公告)号：EP1743314A1

公开(公告)日：2007-01-17

申请号：EP05734942.5

申请日：2005-04-19

申请人： Thomson Licensing

发明人： MARX, Thilo ,  SCHEMMANN, Heinrich

IPC分类号： G09G3/32

CPC分类号： G09G3/325 ,  G09G2310/0254 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/043

摘要： A circuit for an element of a light-emitting display is proposed. The element comprises a current control means, first and second switching means and a light-emitting means. In one embodiment, a signal holding means is provided. The arrangement of the first and second switching means of the element makes it possible to measure the electrical parameters of the current control means and of the light-emitting means during operation. A light-emitting display having a plurality of elements is furthermore proposed. The light-emitting display has a control circuit and a memory. The measured values of the electrical parameters of the current control means (4) and of the light-emitting means of the elements are used to correct the control signal S that is used to drive the elements. This enables a uniform brightness distribution in the case of voltage actuation and makes it possible to compensate for temporal changes in the light-emitting means. In addition, a method for actuating the elements and the light-emitting display is proposed.

公开(公告)号：EP1958180B1

公开(公告)日：2012-03-28

申请号：EP06793842.3

申请日：2006-09-27

申请人： Thomson Licensing

发明人： SCHWANENBERGER, Thomas ,  SCHEMMANN, Heinrich ,  MARX, Thilo

IPC分类号： G09G3/32

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043

摘要： A luminous display includes pixels arranged in rows and columns. Control signals (CTRL2) that are used for controlling first switches (S2) for measuring parameters of pixel cells in a first row are also used to control second switches (S1) for programming pixel cells in a second row. In this way it is possible to use a single control signal for selecting one pixel cell for programming and simultaneously selecting another pixel cell for measuring (S1, S2). Programming and measuring are thus performed in a time staggered manner, while the addressing is moved to the respective next row. The programming is preferably voltage programming (Vprog). In one embodiment the current through the pixel cell that is currently programmed is interrupted. In another embodiment the measuring is performed only after the transient current into signal holding means coupled to current control means has set.

公开(公告)号：EP1958180A1

公开(公告)日：2008-08-20

申请号：EP06793842.3

申请日：2006-09-27

申请人： Thomson Licensing

发明人： SCHWANENBERGER, Thomas ,  SCHEMMANN, Heinrich ,  MARX, Thilo

IPC分类号： G09G3/32

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043

摘要： A luminous display includes pixels arranged in rows and columns. Control signals (CTRL2) that are used for controlling first switches (S2) for measuring parameters of pixel cells in a first row are also used to control second switches (S1) for programming pixel cells in a second row. In this way it is possible to use a single control signal for selecting one pixel cell for programming and simultaneously selecting another pixel cell for measuring (S1, S2). Programming and measuring are thus performed in a time staggered manner, while the addressing is moved to the respective next row. The programming is preferably voltage programming (Vprog). In one embodiment the current through the pixel cell that is currently programmed is interrupted. In another embodiment the measuring is performed only after the transient current into signal holding means coupled to current control means has set.

公开(公告)号：EP1697918A2

公开(公告)日：2006-09-06

申请号：EP04803178.5

申请日：2004-11-18

申请人： Thomson Licensing

发明人： MARX, Thilo

IPC分类号： G09G3/32

CPC分类号： G09G3/3233 ,  G09G3/3241 ,  G09G2300/0842 ,  G09G2310/0254 ,  G09G2310/066 ,  G09G2320/043

摘要： The invention proposes a circuit for an element (3) of a light-emitting display. The element comprises a current control means (4), first and second switching means (12, 10) and a light-emitting means (8). In one embodiment, a signal holding means (6) is provided. In addition, a light-emitting display having a plurality of elements (3) is proposed. Furthermore, a method for driving the elements (3) and the light-emitting display is proposed, and also a control signal for use with the method.

公开(公告)号：EP1743314B1

公开(公告)日：2009-06-17

申请号：EP05734942.5

申请日：2005-04-19

申请人： Thomson Licensing

发明人： MARX, Thilo ,  SCHEMMANN, Heinrich

IPC分类号： G09G3/32

CPC分类号： G09G3/325 ,  G09G2310/0254 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/043

摘要： A circuit for an element of a light-emitting display is proposed. The element comprises a current control means, first and second switching means and a light-emitting means. In one embodiment, a signal holding means is provided. The arrangement of the first and second switching means of the element makes it possible to measure the electrical parameters of the current control means and of the light-emitting means during operation. A light-emitting display having a plurality of elements is furthermore proposed. The light-emitting display has a control circuit and a memory. The measured values of the electrical parameters of the current control means (4) and of the light-emitting means of the elements are used to correct the control signal S that is used to drive the elements. This enables a uniform brightness distribution in the case of voltage actuation and makes it possible to compensate for temporal changes in the light-emitting means. In addition, a method for actuating the elements and the light-emitting display is proposed.

公开(公告)号：EP1754213A2

公开(公告)日：2007-02-21

申请号：EP05743092.8

申请日：2005-05-23

申请人： Thomson Licensing

发明人： MARX, Thilo ,  SCHEMMANN, Heinrich ,  SCHWANENBERGER, Thomas

IPC分类号： G09G3/32

CPC分类号： G09G3/3233 ,  G09G3/3275 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0256 ,  G09G2320/0223 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/043

摘要： In illuminated displays with lighting elements (3) which are driven by means of a control voltage, the voltage drop on a supply line, which supplies two or more lighting elements (3), is compensated for. The currents for all of the light elements (3), which are connected to a supply line, and the known resistances are used to calculate the potential profile of the supply line (20) for this purpose. The control voltages for the light elements (3) are changed such that the actual potential on the supply line (20) for each element (3) is taken into account. Fluctuations in the brightness of the illuminated display resulting from potential differences are avoided. The control voltage is adjusted with the current flow interrupted, so that no potential differences exist on the supply line. The signal retaining means (6) hold the control voltage relative to the potential on the line at the respective position of the lighting element (3). Adjustable voltages for the supply lines (20) are chosen to be sufficiently high that the minimum required voltage for setting the desired currents through the lighting elements (3) is achieved.