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Passive organic light emitting diode display device with wide temperature brightness compensation function and brightness compensation method

A technology of display device and brightness compensation, which is applied to static indicators, instruments, etc., and can solve problems such as display brightness drift

Active Publication Date: 2016-09-21
NANJING GUOZHAO OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design a passive organic light-emitting diode display device with a wide temperature brightness compensation function to solve the problem of display brightness drift caused by the change of operating temperature of the existing PMOLED screen, and at the same time invent a corresponding brightness compensation method

Method used

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  • Passive organic light emitting diode display device with wide temperature brightness compensation function and brightness compensation method
  • Passive organic light emitting diode display device with wide temperature brightness compensation function and brightness compensation method
  • Passive organic light emitting diode display device with wide temperature brightness compensation function and brightness compensation method

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Embodiment 1

[0033] Such as Figure 5 shown.

[0034] A passive organic light emitting diode display device with a wide temperature brightness compensation function, which includes a communication interface unit 1, a main controller 2, an adjustable power supply unit 3, a temperature sensing unit 4, a nonvolatile memory 5, and a PMOLED screen 6 , upper computer 7 and brightness sensor 8, described master controller 2 is connected with described communication interface unit 1, adjustable power supply unit 3, temperature sensing unit 4, nonvolatile memory 5 and PMOLED screen 6 respectively; The adjustable power supply unit 3 is connected to the PMOLED screen 6 to provide the required driving power; the temperature sensing unit 4 is used to sample the ambient temperature and convert it into a digital signal for transmission to the main controller 2. The memory 5 is used to store the brightness control parameters corresponding to the temperature of the PMOLED screen 6 and the preset brightnes...

Embodiment 2

[0038] Such as figure 2 , 3 , 4 shown.

[0039] A method for wide temperature brightness compensation of a passive organic light emitting diode display device with a wide temperature brightness compensation function such as figure 2 As shown, it includes the following steps:

[0040] Step 1, the main controller 2 controls the temperature sensing unit 4 to collect the screen temperature of the PMOLED screen 6;

[0041] Step 2, the main controller 2 queries the brightness control parameter table to obtain the address of the corresponding control parameter in the non-volatile memory 5 according to the received screen temperature data and the preset brightness sent by the host computer 7;

[0042] Step 3, the main controller 2 reads the brightness control parameters;

[0043] Step 4, adjust the pixel drive current or the output voltage of the adjustable power supply unit 3 according to the control parameters, or adjust the pixel drive current and the output voltage of the ad...

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Abstract

The invention provides a passive OLED display device with a wide-temperature brightness compensation function and a brightness compensation method. The passive OLED display device comprises a communication interface unit, a master controller, an adjustable power supply unit, a temperature sensing unit, a nonvolatile memory and a PMOLED screen. The master controller is used for receiving brightness control instructions transmitted by the communication interface unit and temperature data collected by the temperature sensing unit, reading brightness control parameters in the nonvolatile memory to adjust lighting pixel currents or the output voltage of an adjustable power supply circuit according to the preset screen brightness and a temperature look-up table of the PMOLED screen, and compensating for the screen brightness to enable the brightness under different working temperatures to be consistent with the preset brightness. The passive OLED display device with the wide-temperature brightness compensation function can effectively eliminate influences of the temperature on the PMOLED display brightness, and consequently the requirement for brightness consistency of PMOLED application under a harsh environment temperature condition can be met.

Description

technical field [0001] The invention relates to a display technology, in particular to a passive organic light emitting diode display technology, in particular to a passive organic light emitting diode display device with a wide temperature brightness compensation function and a brightness compensation method. Background technique [0002] As we all know, although the passive organic light-emitting diode display device will not have the phenomenon of "smearing" of the liquid crystal display panel at low temperature and other phenomena that cannot display images normally, the light-emitting characteristics of the OLED panel will also be affected by the temperature, resulting in problems caused by the operating temperature. Display brightness drift due to changes. In some applications, there are strict requirements on the brightness range of the display device, such as the application requirements for visibility at night, the brightness of the display device will be limited to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3216
Inventor 王光腾章鹏曹允王绪丰樊卫华陈建军金永明张伟
Owner NANJING GUOZHAO OPTOELECTRONICS TECH CO LTD