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Display panel and device, power supply voltage detection and compensation circuit and method

A power supply voltage detection and power supply voltage technology, which is applied to static indicators, instruments, etc., can solve the problems of OLED pixel luminous brightness influence and gamma value of display panel, etc.

Active Publication Date: 2021-03-12
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the attenuation of the power signal during the transmission process, the brightness of the OLED pixels will be affected, which will affect the gamma value of the display panel.

Method used

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  • Display panel and device, power supply voltage detection and compensation circuit and method
  • Display panel and device, power supply voltage detection and compensation circuit and method
  • Display panel and device, power supply voltage detection and compensation circuit and method

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Embodiment Construction

[0039] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040]It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0042] It should be understood that the term "and...

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Abstract

The invention provides a display panel, a display device, a power supply voltage detection and compensation circuit and a power supply voltage detection and compensation method, which relate to the technical field of display and are used for detecting the power supply voltage actually received by the display panel and compensating the power supply voltage provided by a power supply chip. A power supply voltage detection circuit comprises a gamma voltage generation circuit, a comparator and a voltage interval judgment module, the gamma voltage generation circuit provides a plurality of dynamically varying data voltages, the comparator compares the data voltage with the power supply voltage in real time to obtain a plurality of comparison results, and the voltage interval judgment module records a first data voltage value N1 and a second data voltage value N2, and outputs a power supply voltage value U1 received by the power supply voltage detection end. The comparison result corresponding to the first data voltage value N1 is different from the comparison result corresponding to the second data voltage value N2, the two comparison results are the data voltage values at two adjacentmoments, and N1 < = U1 < = N2.

Description

【Technical field】 [0001] The present invention relates to the field of display technology, in particular to a display panel and device, a power supply voltage detection and compensation circuit and method. 【Background technique】 [0002] The gamma value is an important parameter of the display panel, which is used to characterize the nonlinear relationship between the image brightness output by the display panel and the input signal voltage. For organic light emitting diode (Organic Light Emitting Display, hereinafter referred to as OLED) display device, due to its many advantages such as self-illumination, high luminous efficiency, short response time, wide viewing angle range, and flexible display, it is recognized by the industry as the most The most promising display device. [0003] The OLED is a current-driven device. During the light-emitting process of the OLED pixel, the scan signal, the power signal and the data signal work together, and the current flows through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208G09G3/00
CPCG09G3/006G09G3/3208G09G2320/0233G09G2330/12
Inventor 江吉龙周井雄周瑞渊
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD