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Active-matrix organic light-emitting diode (AMOLED) display apparatus and brightness compensation method thereof

A technology of light-emitting diodes and display devices, applied in static indicators, instruments, etc., can solve problems such as inaccurate compensation, improve uniformity and accuracy, and solve inaccurate compensation of pixel brightness deviation.

Active Publication Date: 2015-11-25
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide an AMOLED display device and a brightness compensation method thereof, which are used to solve the problem of inaccurate compensation existing in existing brightness deviation compensation methods

Method used

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  • Active-matrix organic light-emitting diode (AMOLED) display apparatus and brightness compensation method thereof
  • Active-matrix organic light-emitting diode (AMOLED) display apparatus and brightness compensation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1 of the present invention provides an AMOLED display device, specifically, as figure 1 As shown, it is a schematic structural diagram of the AMOLED display device in Embodiment 1 of the present invention, and the AMOLED display device includes the following parts:

[0025] A display panel 11, the display panel 11 comprising a plurality of sub-pixels, each sub-pixel comprising an OLED and a pixel circuit for independently driving the OLED;

[0026] TCON12 can be used to adjust the initial data voltage output by the drive chip 13 to each sub-pixel in the initial compensation stage to obtain the actual display brightness of each sub-pixel when the value of the brightness parameter of the display panel is a set value The data voltage compensation value corresponding to each sub-pixel is controlled, and the driving chip 13 is controlled to output the first data voltage to the pixel circuit corresponding to each sub-pixel according to the data voltage compensation...

Embodiment 2

[0051] Based on the same inventive concept as that of Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a brightness compensation method for an AMOLED display device, specifically, as figure 2 As shown, it is a schematic flow chart of the brightness compensation method of the AMOLED display device described in Embodiment 2 of the present invention, and the brightness compensation method may include the following steps:

[0052]Step 201: In the initial compensation stage, TCON adjusts the initial data voltage output by the driver chip to each sub-pixel to obtain the value of the brightness parameter of the display panel as the set value, and when the actual display brightness of each sub-pixel is uniform. The data voltage compensation value corresponding to the pixel; wherein, the actual display brightness of each sub-pixel is measured by the CCD.

[0053] Optionally, the brightness parameter may include grayscale or display brightness. Tha...

example 1

[0070] Assuming that the brightness parameter of the display panel is grayscale, and for any set grayscale, TCON can perform brightness compensation according to the method described in Embodiment 2 of the present invention, and the brightness compensation method may include the following steps:

[0071] Step 1: Set the grayscale value of the display panel to be photographed, such as 64 grayscale, 128 grayscale, 192 grayscale, or 255 grayscale (the highest grayscale), etc., control the driver chip to output data voltage to each sub-pixel, and Use the CCD to take pictures of the display and measure the actual display brightness of each sub-pixel.

[0072] Step 2: Adjust the data voltage of each sub-pixel one by one, so that the measured brightness of all sub-pixels is within the required uniform range.

[0073] Step 3: When the brightness uniformity of the display screen meets the requirements, for any sub-pixel, store its data voltage and corresponding gray scale value in the ...

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Abstract

The invention discloses an active-matrix organic light-emitting diode (AMOLED) display apparatus and a brightness compensation method thereof. At an initial compensation stage, a CCD can be used for performing brightness calibration on a display screen so that a data voltage compensation value of each sub pixel when the brightness parameter value of a display panel is a set value is obtained, first data voltage is output to a corresponding pixel circuit according to the data voltage compensation value of each sub pixel, and at the moment, induction voltage of each sub pixel is taken as initial reference voltage of each sub pixel when the brightness parameter value of the display panel is the set value; and at a subsequent compensation stage, through adjusting the data voltage of each sub pixel, the induction voltage of each sub pixel is enabled to be equal to the corresponding initial reference voltage when the brightness parameter value of the display panel is the set value, and brightness uniformity compensation of each sub pixel in the subsequent compensation state is realized, such that the uniformity and the accuracy of initial brightness compensation are improved, pixel aging is accurately compensated, and the uniformity and the accuracy of subsequent compensation are improved.

Description

technical field [0001] The invention relates to the technical field of active-matrix organic light emitting diode (AMOLED, active-matrix organic light emitting diode) display, in particular to an AMOLED display device and a brightness compensation method thereof. Background technique [0002] The AMOLED display device is a self-luminous element, and its basis is an organic light emitting diode (OLED, organic light emitting diode). The OLED uses an organic semiconductor material and a light-emitting material to undergo carrier injection and recombination under the drive of an electric field to emit light. Due to many advantages such as high brightness, clear image quality, ultra-thin thickness, and good display performance, AMOLED display devices are expected to be more widely used. [0003] An AMOLED display device is composed of tens of thousands of pixels each including an OLED and a pixel circuit for driving the OLED. The pixel circuit is composed of a switching thin-fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/3233G09G3/006G09G2320/045G09G2320/0693G09G2360/141G09G2320/0233G09G2320/0295G09G2360/147G09G3/2074G09G3/3258G09G2310/027G09G2310/08G09G2320/0626G09G2330/12G09G2320/043
Inventor 宋丹娜吴仲远曾思衡孟松
Owner BOE TECH GRP CO LTD
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