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A technology for displaying equipment and displaying data, applied to static indicators, instruments, etc., can solve the problems of increasing the complexity and size of printed circuit board layout, occupying large pin resources, impedance mismatch, etc., to reduce complexity , save PCB size, eliminate the effect of clock skew

Active Publication Date: 2020-04-28
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, the traditional serial method of using clock and data transmission will have problems such as impedance mismatch and clock skew.
[0005] In addition to the above problems, no matter which method is used, the interface for transmitting detection data and the interface for transmitting display data (DisplayData) are independent, which will occupy a large amount of additional pin resources and increase the complexity of printed circuit board layout (PCBLayout). degree and size

Method used

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Embodiment Construction

[0027] figure 2 It is a schematic structural diagram of a preferred embodiment of the display device of the present invention. The display device of the present invention mainly includes a data driver chip 20 and a timing controller 21. The interfaces for detecting data are combined into one, and the data sending / receiving states of the data driving chip 20 and the timing controller 21 are switched through a mode selection signal (mode). The data driving chip 20 includes the function of a detection chip (Sense IC), which can detect the characteristics of the panel. When performing electrical compensation, it can sense the threshold voltage of the driving thin film transistor or OLED of each sub-pixel to obtain detection data, timing The controller 21 uses the detection data and combines corresponding algorithms to compensate each sub-pixel to form display data, and the display data is transmitted to the data driver chip 20 through the P2P interface. The present invention com...

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Abstract

The invention relates to display equipment. The display equipment comprises a data driving chip which can detect the panel characteristics to obtain detection data and a time sequence controller. The data driving chip and the time sequence controller are connected in a communication way through a P2P interface and the interface for transmitting the display data and the interface for transmitting the detection data are combined, and the data transmitting / receiving state of the data driving chip and the time sequence controller is switched through a mode selection signal. According to the display equipment, the common problems of clock skew and impedance mismatch of the ordinary LVDS interface can be eliminated, and the pins can be saved, the layout complexity of the printed circuit board can be reduced and the size of the PCB can be saved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display device. Background technique [0002] With the improvement of the technology and process of OLED panels and the reduction of costs, OLED TVs are gradually popularized and recognized and accepted by more people. However, OLED panels have a problem that has been criticized by people, that is, the stability of device performance is very poor. Device performance includes: threshold voltage of OLED, threshold voltage and mobility of transistor, etc. Due to the change and drift of device characteristics, as well as the differences between devices, the characteristics of the OLED panel will also deteriorate, which will directly affect the viewing effect, so these characteristics must be compensated. [0003] One of the common solutions is to use electrical compensation, that is: the data driver chip (Source IC) senses the threshold voltage of each sub-pixel driver t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225G09G3/3275
CPCG09G3/3225G09G3/3275
Inventor 徐京
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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