Unit of transmission circuit for data wire of light display excited by electricity driven through electrical current

Abstract

The unit of transmission circuit is utilized to receive data current from external signal source and drive pixel group on screen excited by electricity. The unit includes first circuit group, second circuit group, and shift temporary storage. The shift temporary storage controls first circuit group to receive data current, and controls second circuit group to copy data from first circuit group and send data current to pixel group.

Description

technical field [0001] The invention relates to a data line driving circuit, in particular to a device for current driving a data line transmission circuit of an electroluminescence display. Background technique [0002] Electroluminescence (EL) is a self-luminous display technology. Its operating principle is to inject carriers into semiconductor elements with luminescent properties through electrical means, and excite them to generate light. The electroluminescence can be simply divided into inorganic electroluminescence (inorganic electroluminescence) and organic electroluminescence (organic electroluminescence, OEL) according to the properties of the semiconductor elements used. One of the driving circuit architectures of the electroluminescence display is an active matrix circuit architecture. [0003] The simplest and most basic circuit configuration diagram of the active matrix is ​​as follows: figure 1 shown. exist figure 1 Among them, the function of the transis...

AI Technical Summary

Problems solved by technology

The structure of this current latch can greatly reduce the number of current sources, but since this structure is based on two circuit groups alternately, each circuit group and its shift register must be controlled by an external control signal line. Therefore, the number of external control signal lines used is too large, and the data current processed cannot be affected by two different circuit groups, resulting in poor image quality.

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