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Display driver IC including oscillator frequency controller

一种显示驱动器、集成电路的技术，应用在功率的自动控制、仪器、电气元件等方向，能够解决振荡器偏离目标频率、信号质量劣化等问题

Active Publication Date: 2020-03-06
MAGNACHIP SEMICONDUCTOR LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the case of operating at multiples of frequency, the multiples of frequency can act as noise on a particular frequency band, thereby degrading the signal quality of that frequency band due to electromagnetic interference
Also, when a frequency fixed by applying a trimming code received from a register is used for an oscillator, if temperature or voltage changes, the frequency depending on the characteristics of the oscillator may deviate from the target frequency

Method used

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  • Display driver IC including oscillator frequency controller
  • Display driver IC including oscillator frequency controller
  • Display driver IC including oscillator frequency controller

Examples

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Embodiment Construction

[0047] The following detailed description is provided to assist the reader in gaining an overall understanding of the methods, devices and / or systems described herein. However, various alterations, modifications and equivalents of the methods, apparatus and / or systems described herein will be apparent after understanding the disclosure of the present application. For example, the sequence of operations described herein is merely an example and is not limited to the sequence of operations set forth herein, but may be changed after understanding the disclosure of the present application, except for operations that must occur in a certain order. Also, descriptions of features that are known in the art may be omitted for increased clarity and conciseness.

[0048] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some o...

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Abstract

The application relates to a display driver IC including an oscillator frequency controller. A display driver IC includes a register map, an oscillator, a timing controller, an oscillator scatter, andan intellectual property (IP) block. The register map is configured to store a trim code of a fixed frequency and scatter option information. The oscillator is configured to generate an oscillator clock based on the trim code. The timing controller is configured to generate an internal synchronization signal based on the oscillator clock. The oscillator scatter is configured to output a modifiedtrim code to the oscillator based on the trim code, the scatter option information, and the internal synchronization signal. The intellectual property (IP) block is configured to receive a modified oscillator clock generated in the oscillator based on the modified trim code.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit under 35 U.S.C.119(a) of Korean Patent Application No. 10-2018-0101601 filed with the Korean Intellectual Property Office on Aug. 28, 2018, the entire disclosure of which is incorporated herein by reference for all purposes. for all purposes. technical field [0003] The present disclosure relates to a display driver IC (integrated circuit) including an oscillator frequency controller. Background technique [0004] According to the needs of consumers, mobile electronic devices are expected to be multifunctional, low power consumption, lighter, thinner, shorter and smaller. However, it is necessary to integrate many components into a smaller area to meet such demands, and to increase the operating frequency of the device to a higher frequency band based on higher performance components. [0005] As the frequency band of operating frequencies of components in the mobile electronic de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G5/006G09G2370/10G09G2310/08G09G2330/06G09G5/18H03L7/00H03K3/011H03L7/24
Inventor 朴相洙
Owner MAGNACHIP SEMICONDUCTOR LTD