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Temperature compensation circuit and method applied to display panel and display panel

A display panel and pixel circuit technology, applied to static indicators, instruments, etc., can solve the problems of increasing the production cost of the display panel, and achieve the effect of prolonging the service life

Active Publication Date: 2018-02-23
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, an additional temperature sensor needs to be added in the temperature compensation of the prior art, thereby increasing the production cost of the display panel

Method used

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  • Temperature compensation circuit and method applied to display panel and display panel
  • Temperature compensation circuit and method applied to display panel and display panel
  • Temperature compensation circuit and method applied to display panel and display panel

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Embodiment Construction

[0016] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] figure 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Such as figure 1 As shown, the display panel includes a temperature compensation circuit 11 , a driving circuit 12 and a pixel circuit 13 , wherein the temperature compensation circuit 11 includes a control circuit 111 and a detection circuit 112 .

[0018] The control circuit 111 , the driving circuit 12 and the pixel circuit 13 are electrically coupl...

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Abstract

The invention discloses a temperature compensation circuit and method applied to a display panel and the display panel. The display panel includes a control circuit, a driving circuit, a detection circuit, and a pixel circuit. The detection circuit is used for obtaining a current threshold voltage of a switch tube in a pixel circuit. The control circuit obtains a current voltage difference betweenthe current threshold voltage and initial threshold voltage, a current compensation gain matched the current voltage difference is obtained in preset associated data of a voltage difference and a compensation gain, and the current compensation gain is used to control the driving circuit to drive the pixel circuit. Through the above mode, the temperature compensation of the display panel can be realized without an additional temperature sensor, and thus the service life of the display panel is prolonged.

Description

technical field [0001] The invention relates to the field of organic light emitting diode displays, in particular to a temperature compensation circuit and method applied to a display panel and a display panel. Background technique [0002] Compared with liquid crystal display panels, Organic Light Emitting Diode (OLED) panels have advantages such as fast response time, light weight, no viewing angle limitation, and high contrast ratio, and thus become one of the main research focuses of display panels in recent years. According to the driving method of the organic light emitting diodes, they can be roughly divided into passive organic light emitting diode (PMOLED) panels and active organic light emitting diode (AMOLED) panels. Among them, the AMOLED panel is suitable for display panels with high resolution and large size. [0003] The pixel brightness of the AMOLED panel is proportional to the conduction current of the organic light emitting diode, and the magnitude of the...

Claims

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Application Information

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IPC IPC(8): G09G3/3225
Inventor 黄泰钧王振岭
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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