Display driving module and driving method

A display driver and driver technology, used in static indicators, instruments, etc., can solve the problems of inconsistent target values ​​and difficulty in realizing the driver circuit, and achieve the effect of avoiding the delay of turn-on or turn-off

Active Publication Date: 2020-07-24
MINIDSN INC
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the non-ideality of the drive circuit leads to difficulties in implementation. For example, it takes time to switch between different output currents. During this switching time, the output value is different from the ideal value; and for example, the signal rise time and fall time of different target pulse heights ar

Method used

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  • Display driving module and driving method
  • Display driving module and driving method

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Embodiment Construction

[0039] The technical means adopted by the present invention to achieve the intended invention purpose are further described below in conjunction with the drawings and preferred embodiments of the present invention.

[0040] see figure 1 As shown, the present invention provides a display driver module, including a pulse width control unit 11 and a driver 12, the driver 12 is electrically connected to the pulse width control unit 11, the pulse width control unit 11 receives a pulse width information and according to To generate a pulse width control signal, the driver 12 receives the pulse width control signal and a signal slope information, and the driver 12 generates a driving signal according to the pulse width control signal and the signal slope information.

[0041] Wherein, the driver 12 controls the conduction time of the drive signal according to the pulse width control signal and the signal slope information, and controls the signal rise rate of the drive signal during ...

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Abstract

The invention relates to a display driving module and a driving method. The display driving module comprises a pulse width control unit and a driver. The driver is electrically connected with the pulse width control unit to receive the pulse width control signal, receives signal slope information and generates a driving signal according to the signal slope information, and the driver controls thesignal rising rate of the driving signal in the conduction time according to the signal slope information and controls the conduction time of the driving signal according to the pulse width control signal and the signal slope information; and when the driving signal does not reach the output target value within the conduction time and the ascending and descending curves are approximately linear, the total output quantity of the driving signal in the working period is in direct proportion to the square of the conduction time, so that the resolution ratio and the regulation and control range ofthe total output quantity at low brightness are increased.

Description

technical field [0001] The invention relates to a driving module and a driving method, in particular to a display driving module and a driving method thereof. Background technique [0002] Existing displays generally use pulse width modulation (Pulse Width Modulation; PWM) to control the degree of brightness and darkness recognized by the human eye. By virtue of the persistence of vision of the human eye, when the frequency of brightness and darkness of a light source is greater than one When the critical value is reached, the human eye cannot feel the flicker of the light source. Therefore, in a duty cycle greater than the critical frequency, the total output of the light source of the display is changed by adjusting the percentage of on-time in each duty cycle, so as to Provide human eyes with different brightness. The on-time percentage can be divided into a plurality of minimum on-time unit times by a digital-element on-control signal to generate a total on-time that ac...

Claims

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Application Information

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IPC IPC(8): G09G3/3208G09G3/36
CPCG09G3/3208G09G3/3648
Inventor 史富洋
Owner MINIDSN INC
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