摘要:
An active matrix display panel comprises a substrate, array of pixel circuits being arranged in a matrix of at least one column and a plurality of rows on the substrate, each pixel circuit comprising a light-emitting element, capable of emitting light of an intensity determined by the value of a current passed through it, and at least one column line, each column line arranged to conduct a reference current, provided by a current driving circuit, when connected to the panel. The pixel circuits in a column are divided into a plurality of groups of at least one pixel circuit. The active matrix display panel comprises at least one current mirror circuit associated with a first group, comprising a first current mirror, arranged to mirror a reference current flowing through a column line to a first current mirror output. Each pixel circuit in the first group comprises at least a first current-memory stage, having an output terminal connected to the light-emitting element, wherein the first current-memory stage is capable of drawing a current determined at least partly by the current mirrored to the first current mirror output through the output terminal. Each current mirror circuit comprises at least one additional current mirror, arranged to mirror a reference current flowing through an associated column line to an additional current mirror output, wherein each additional current mirror output is connected in parallel to the first current mirror output.
摘要:
The invention relates to a display device (6;6′) comprising a display (2) having a plurality of display pixels (3;3′) with light emitting elements (LED) and at least a first drive element (T1) and a second drive element (T2) for driving said light emitting elements (LED) in accordance with an analogue data signal, representing at least one frame in a range from low to high overall light emission states for said display (2). The display device (6;6′) further comprises a display controller (10) having a data input (9) for the analogue data signal, a sensing unit (16) adapted to evaluate the overall light emission state of said frame and an output (13) for generating at least one sparkling signal for the one or more display pixels (3;3′) having a high light emission state (18) exceeding a sensed low overall light emission state of said frame. The display controller (10) is arranged to individually control said first drive element (T1) and said second drive element (T2) by said sparkling signal such that said one or more display pixels (3;3′) having said high light emission state are driven by at least one of said drive elements (T1,T2) in a sparkling light emission state (18′;18″) exceeding said high light emission state (18).
摘要:
An RFID tag (1, 1′) comprises at least one antenna (2, 2′) and electronic tag components (4) cooperating with the antenna, wherein the antenna (2, 2′) and the electronic tag components (4) are positioned on a common substrate (3), wherein portions (3b) of the substrate encircled by the antenna (2, 2′) and not occupied by the electronic tag components (4) have been removed.
摘要:
An RFID tag (1, 1′) comprises at least one antenna (2, 2′) and electronic tag components (4) cooperating with the antenna, wherein the antenna (2, 2′) and the electronic tag components (4) are positioned on a common substrate (3), wherein portions (3b) of the substrate encircled by the antenna (2, 2′) and not occupied by the electronic tag components (4) have been removed.
摘要:
A pixel cell in an active matrix display comprising a current driven emissive element such as an OLED (20) and a data input (17) for receiving an analogue data signal (Vin). The pixel has at least two drive elements (12, 14), each being connected to a power supply (16) and arranged to drive the emissive element in accordance with the data signal, and selecting means (22, 24) for providing, in response to a select signal (21, 23), the data signal to at least one of the drive elements (12, 14). Further, each drive element is adapted to drive the emissive element (20) in a different drive current range in response to a given data signal. Thereby, a required brightness range can be obtained while data voltages too close to the threshold voltage may be avoided.
摘要:
A method for sensing a light emissive element in an active matrix display pixel cell (20; 20′) further comprising a data line (21) connectable to a drive element (24) and to a first electrode (29) of the emissive element (25). The data line (21) is connected to the anode (29) of the emissive element (25), and a sensing voltage (V1) to reverse bias the emissive element (25), and detecting any leakage current (IL) flowing through the emissive element (25).
摘要:
The invention relates to an electroluminescent display comprising a first display pixel and a second display pixel formed on a substrate. The display pixels comprise a first electrode deposited on or across the substrate, an electroluminescent layer and a second reflective electrode. The first and second display pixels are separated by a region comprising at least one insulating structure. The insulating structure is adapted to suppress the output of light at the second display pixel reflected at the second reflective electrode, which light is incident from at least the first display pixel and/or the substrate. The insulating structure reduces crosstalk of light between the first and second or further display pixel and can be easily integrated in the manufacturing process of the electroluminescent display.
摘要:
Driving of a two-sided viewable display (a display that provides information on both sides) is performed by means of mirroring switching circuits Techniques for simultaneous (total or partial) view are also proposed.
摘要:
Complementary transistors e.g. a p-channel TFT-transistor (16) and an n-channel TFT-transistor (17) are used as driving transistors in a pixel circuit (10). Upon bending they vary in opposite ways, one with smaller (drain) current the other with larger (drain) current, and in total the effect will be reduced.
摘要:
The display device (6) comprise s a display (2) and generating mean s (10, 8). The display (2) has a plurality of light emitting elements (3), and data lines (13) for providing pulse width modulation (PWM) signals to the light emitting elements (3). The generating means (10, 8) are coupled to the data lines (13) for generating, during time intervals (SF) of a frame period, at least a first non-zero emission level (L(V1;C1;I1)) of a light emitting element (3) during a first one of the time intervals (SF) and a second non-zero emission level (L(V2; C2; 12)) during a second one of the time intervals (SF).
摘要翻译:显示装置(6)包括显示器(2)并产生平均值(10,8)。 显示器(2)具有多个发光元件(3)和用于向发光元件(3)提供脉宽调制(PWM)信号的数据线(13)。 生成装置(10,8)被耦合到数据线(13),用于在帧周期的时间间隔(SF)期间产生至少第一非零发射电平(L(V 1; C 1; I 在时间间隔(SF)中的第一个时间间隔(SF)期间的第一个时间间隔期间发光元件(3)的第一非零发射电平(L(V 2; C 2; 12))) (SF)。