A method for updating display control parameters and a driver chip
A technology for display control and driving chips, applied in static indicators, instruments, etc., can solve the problems of abnormal pixel array display, the difficulty of data transmission capacity of interface modules to meet the requirements, etc. The effect of reducing requirements
Active Publication Date: 2020-10-02
SHANGHAI AWINIC TECH CO LTD
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However, for a pixel array with a large number of display pixels, using the existing display control parameter update method to update the display control parameters stored in the driver chip needs to rely on the interface module to transmit a large amount of data, which not only improves the transmission of the interface module Data capacity requirements, and it is easy to appear that the transmission data capacity of the interface module is difficult to meet the requirements, resulting in abnormal display of the pixel array
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[0051] Such as figure 1 As shown, a pixel array refers to a structure in which a plurality of display pixels are arranged in an array of M rows and N columns, and a matrix driving mode is usually adopted. figure 1 shows 36 display pixels arranged in an array of 6 rows and 6 columns, and each display pixel works in a time-division mode. The brightness of each display pixel is determined by the average current flowing through the display pixel. For a display pixel composed of RGB LEDs, the ratio of the output brightness of red, green and blue determines the final displayed color.
[0052] refer to figure 2 , figure 2 for right figure 1 The drive signal waveform of the pixel array shown in the array drive, SWx, x∈(1,2,3,4,5,6) represents the selection switch signal, when SWx is at high level, the display pixels in the x column are turned on ; CSy, y∈(1,2,3,4,5,6) represents the constant current source current level parameter of each display pixel in row y (a data drive sign...
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The application discloses a method for updating display control parameters, and a driving chip. When updating display control parameters by using an update method of display control parameters, the updating of both a single display control parameter and a plurality of display control parameters can be completed once by the continuous write operation of an interface module for a pixel array havinga plurality of display control pixels, which greatly facilitates the operation of quickly updating the display content in pixel order, and increases the proportion of the display control parameters inthe data transmitted by the interface module in the driving chip, that is, the proportion of the effective data transmitted by the interface module in the total transmission data is increased, and that is, the number of total transmission data that the interface module needs to transmit is reduced when transmitting the same number of display control parameters, thereby reducing the requirement for the data transmission capability of the interface module in the process of updating multiple display control parameters, and reducing the probability of occurrence that the transmission data capability of the interface module is difficult to meet the requirements.
Description
technical field [0001] The present application relates to the technical field of pixel array driving, and more specifically, to a method for updating display control parameters and a driving chip. Background technique [0002] A light emitting diode (Light Emitting Diode, LED) is used as a display pixel, and a structure in which a plurality of display pixels are arranged in an array is called a pixel array or an LED array. [0003] The display driving of the pixel array usually needs to rely on the driver chip to complete, and the brightness of each display pixel in the pixel array is usually jointly controlled by various display control parameters. In order to update the display control parameters in the pixel array, a type of display control parameter is usually stored in an address page of the register in the driver chip, and when a certain type of display control parameter needs to be updated, the interface of the driver chip is used The continuous writing function of t...
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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 张忠祝尊震高桂华吴斯敏杜黎明程剑涛孙洪军
Owner SHANGHAI AWINIC TECH CO LTD