CN112419962B - Self-luminous display device and display picture compensation method thereof - Google Patents

Self-luminous display device and display picture compensation method thereof Download PDF

Info

Publication number
CN112419962B
CN112419962B CN201910774201.XA CN201910774201A CN112419962B CN 112419962 B CN112419962 B CN 112419962B CN 201910774201 A CN201910774201 A CN 201910774201A CN 112419962 B CN112419962 B CN 112419962B
Authority
CN
China
Prior art keywords
matrix
compensation
voltage
estimation circuit
pixel units
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910774201.XA
Other languages
Chinese (zh)
Other versions
CN112419962A (en
Inventor
向瑞杰
陈志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acer Inc
Original Assignee
Acer Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Acer Inc filed Critical Acer Inc
Priority to CN201910774201.XA priority Critical patent/CN112419962B/en
Publication of CN112419962A publication Critical patent/CN112419962A/en
Application granted granted Critical
Publication of CN112419962B publication Critical patent/CN112419962B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0257—Reduction of after-image effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of El Displays (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention provides a self-luminous display device and a display picture compensation method thereof. The self-luminous display device comprises a plurality of pixel units, a display driving circuit and a compensation estimation circuit. The compensation estimation circuit converts the gray scale data matrix into an original data voltage matrix, and accumulates the received gray scale data matrix over time to obtain an accumulated gray scale matrix. The compensation estimation circuit judges the brightness attenuation degree of the pixel unit according to the accumulated gray-scale matrix. The compensation estimation circuit generates a compensation voltage matrix according to the gray-scale data matrix and the brightness attenuation degree of the pixel unit. The compensation estimation circuit generates a compensated data voltage matrix according to the original data voltage matrix and the compensation voltage matrix. And the display driving circuit drives the pixel unit according to the compensated data voltage matrix.

Description

Self-luminous display device and display picture compensation method thereof
Technical Field
The present invention relates to display technologies, and in particular, to a self-luminous display device and a display frame compensation method thereof.
Background
With the development of the semiconductor industry and the optoelectronic industry, Light Emitting Diodes (LEDs) are widely used not only for illumination purposes but also in the field of displays. Among them, self-light emitting displays such as Organic-light emitting diode (OLED) displays, Micro-light emitting diode (Micro LED) displays, and Quantum Dot active Organic light emitting diode (Quantum Dot AMOLED) displays are considered as one of the mainstream displays in the future due to their characteristics such as high brightness, high contrast, and wide viewing angle.
However, the amount of current flowing through the light emitting diodes of the self-luminous display is incorrect due to the pixel material characteristics of the self-luminous display and the temperature change of the self-luminous display after long-term operation, so that the self-luminous display has problems of brightness error and image sticking.
Disclosure of Invention
In view of the above, the present invention provides a self-luminous display device and a method for compensating a display image thereof, which can improve the brightness accuracy of the display image.
The self-luminous display device comprises a pixel array, a display driving circuit and a compensation estimation circuit. The pixel array has a plurality of pixel units arranged in an array. The display driving circuit is coupled to the pixel array and used for receiving the compensated data voltage matrix and driving the pixel units according to the compensated data voltage matrix. The compensation estimation circuit is coupled to the display driving circuit. The compensation estimation circuit receives the gray scale data matrix and converts the gray scale data matrix into an original data voltage matrix. The compensation estimation circuit accumulates the received gray scale data matrix with time to obtain accumulated gray scale matrixes corresponding to the pixel units, judges the brightness attenuation degree of the pixel units according to the accumulated gray scale matrixes, generates a first compensation voltage matrix according to the gray scale data matrix and the brightness attenuation degree of the pixel units, and generates a compensated data voltage matrix according to the original data voltage matrix and the first compensation voltage matrix.
In an embodiment of the invention, the compensation estimation circuit converts the accumulated gray scale matrix into an accumulated time matrix according to a conversion parameter, and determines the brightness attenuation degree of the pixel units according to the accumulated time matrix, wherein the conversion parameter is associated with the material characteristics of the pixel units.
In an embodiment of the invention, the first compensation voltage matrix includes a plurality of first compensation voltages, and the compensation estimation circuit respectively finds the first compensation voltages corresponding to the pixel units in a lookup table according to the gray-scale data matrix and the accumulated time matrix.
In an embodiment of the invention, after the self-luminous display device is turned on, the compensation estimation circuit calculates an operation time of the self-luminous display device, the compensation estimation circuit generates a second compensation voltage matrix according to the gray scale data matrix and the operation time, and the compensation estimation circuit generates a compensated data voltage matrix according to the original data voltage matrix, the first compensation voltage matrix and the second compensation voltage matrix.
In an embodiment of the invention, the second compensation voltage matrix includes a plurality of second compensation voltages, and the compensation estimation circuit finds the second compensation voltages corresponding to the pixel units in the on/off curve lookup table according to the gray-scale data matrix and the operation time.
In an embodiment of the invention, the self-light emitting display device further includes a sensing circuit. The sensing circuit is coupled to the pixel array and the compensation estimation circuit, and is used for sensing the current of each of the pixel units and generating a plurality of sensing current values respectively corresponding to the pixel units. When the self-luminous display device executes the startup operation, the compensation estimation circuit provides data driving voltage through the display driving circuit to drive the pixel units, the compensation estimation circuit obtains the sensing current values during startup through the sensing circuit, and the compensation estimation circuit establishes a first current-voltage relation curve according to the data driving voltage and the sensing current values during startup. When the self-luminous display device executes shutdown operation, the compensation estimation circuit provides data driving voltage through the display driving circuit to drive the pixel units, obtains the sensing current values during shutdown through the sensing circuit, and establishes a second current-voltage relation curve according to the data driving voltage and the sensing current values during shutdown. The compensation estimation circuit establishes a startup and shutdown curve lookup table according to the first current-voltage relation curve and the second current-voltage relation curve.
In an embodiment of the invention, the compensation estimation circuit establishes the power-on/off curve look-up table according to a first current-voltage relationship curve obtained in a current power-on operation and a second current-voltage relationship curve obtained in a previous power-off operation.
The display picture compensation method is used for the self-luminous display device. The self-luminous display device comprises a plurality of pixel units arranged in an array, a display driving circuit and a compensation estimation circuit. The display picture compensation method comprises the following steps. The gray scale data matrix is converted into an original data voltage matrix through a compensation estimation circuit, and the received gray scale data matrix is accumulated along with time to obtain an accumulated gray scale matrix corresponding to the pixel units. And judging the brightness attenuation degree of the pixel units according to the accumulated gray scale matrix through a compensation estimation circuit. A first compensation voltage matrix is generated by a compensation estimation circuit according to the gray-scale data matrix and the brightness attenuation degree of the pixel units. And generating a compensated data voltage matrix according to the original data voltage matrix and the first compensation voltage matrix through a compensation estimation circuit. And driving the pixel units according to the compensated data voltage matrix through a display driving circuit.
In an embodiment of the invention, the step of determining the brightness attenuation degree of the pixel units according to the accumulated gray-scale matrix includes the following steps. And converting the accumulated gray scale matrix into an accumulated times matrix according to the conversion parameters, wherein the conversion parameters are related to the material characteristics of the pixel units. And judging the brightness attenuation degree of the pixel units according to the accumulated time matrix.
In an embodiment of the invention, the first compensation voltage matrix includes a plurality of first compensation voltages. The step of generating the first compensation voltage matrix according to the gray scale data matrix and the brightness attenuation degree of the pixel units comprises the following steps. The first compensation voltages corresponding to the pixel units are respectively searched in a lookup table according to the gray scale data matrix and the accumulated time matrix.
In an embodiment of the invention, the method for compensating the display frame further includes the following steps. After the self-luminous display device is started, the operation time of the self-luminous display device is calculated through the compensation estimation circuit. And generating a second compensation voltage matrix according to the gray-scale data matrix and the operation time through a compensation estimation circuit. And generating a compensated data voltage matrix according to the original data voltage matrix, the first compensation voltage matrix and the second compensation voltage matrix through a compensation estimation circuit.
In an embodiment of the invention, the second compensation voltage matrix includes a plurality of second compensation voltages. The step of generating the second compensation voltage matrix according to the gray scale data matrix and the operation time comprises the following steps. And searching the second compensation voltages corresponding to the pixel units in a power-on/off curve lookup table according to the gray scale data matrix and the operation time.
In an embodiment of the invention, the method for compensating the display frame further includes the following steps. When the self-luminous display device executes the startup operation, the display driving circuit provides data driving voltage to drive the pixel units, the sensing circuit obtains the sensing current values during startup, and the compensation estimation circuit establishes a first current-voltage relation curve according to the data driving voltage and the sensing current values during startup. When the self-luminous display device executes shutdown operation, the display driving circuit provides data driving voltage to drive the pixel units, the sensing circuit obtains the sensing current values during shutdown, and the compensation estimation circuit establishes a second current-voltage relation curve according to the data driving voltage and the sensing current values during shutdown. And establishing a startup and shutdown curve lookup table according to the first current-voltage relation curve and the second current-voltage relation curve through the compensation estimation circuit.
In an embodiment of the invention, the step of establishing the power on/off curve lookup table according to the first current-voltage relationship curve and the second current-voltage relationship curve includes the following steps. And establishing a power-on/off curve lookup table according to a first current-voltage relation curve obtained in the current power-on operation and a second current-voltage relation curve obtained in the previous power-off operation.
Based on the above, in the self-luminous display device and the compensation method for the display frame thereof according to the present invention, the compensation estimation circuit can determine the brightness attenuation degree of the pixel units according to the accumulated gray-scale matrix, and accordingly provide the compensated data voltage matrix. The display driving circuit can drive the pixel units according to the compensated data voltage matrix, so that the pixel units display correct brightness, and the influence of the material characteristics of the pixel units on the display brightness of the pixel units is reduced.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a block diagram of a self-luminous display device according to an embodiment of the invention;
FIG. 2A is a graph illustrating a relationship among a data driving voltage, a luminance value of a pixel unit, and a luminance degradation level of the pixel unit according to an embodiment of the invention;
FIG. 2B is a graph illustrating a relationship among a data driving voltage, a luminance value of a pixel unit, and an accumulated count value of the pixel unit according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating steps of a method for compensating a display according to an embodiment of the invention;
FIG. 4A is a graph illustrating a relationship among a current value of a pixel unit, an operation time of the self-luminous display device, and a data driving voltage according to an embodiment of the invention;
FIG. 4B is a graph illustrating a relationship among a luminance value of a pixel unit, an operation time of the self-luminous display device, and a data driving voltage according to an embodiment of the invention;
FIG. 4C is a graph illustrating a relationship between a data driving voltage, a luminance value of a pixel unit, and an operating time of the self-luminous display device according to an embodiment of the invention;
FIG. 5 is a flowchart illustrating steps of a method for compensating a display according to another embodiment of the present invention.
The reference numbers illustrate:
100: self-luminous display device
120: pixel array
140: display driving circuit
160: compensation estimation circuit
180: sensing circuit
CDA: compensated data voltage matrix
CDN: first compensation voltage matrix
CDT: second compensation voltage matrix
DL: data line
GLA: gray-scale data matrix
L80, L81, L99, L100: curve line
LG1, LG 2: brightness value
LL _ ON, LL1, LLN, LL _ OFF: relation curve
LUT 1: lookup table
LUT 2: startup and shutdown curve lookup table
NR: conversion parameter
ODA: raw data voltage matrix
PX: pixel unit
SGA: cumulative gray scale matrix
And (3) SI: sensing current value
SL: scanning line
SNA: cumulative number of times matrix
S310, S320, S330, S340, S350, S500, S510, S520, S530, S540, S550, S560, S570: step (ii) of
TL _ ON, TL1, TLN, TL _ OFF: current voltage relation curve
T1, TN: operating time
VDATA: compensated data driving voltage
VSCAN: scanning driving voltage
V10, V11, V1N, V20, V21, V2N: value of voltage
Δ V1, Δ VN, Δ V1 ', Δ VN': difference in voltage
Y: cumulative count number
Detailed Description
In order that the present disclosure may be more readily understood, the following specific examples are given as illustrative of the invention which may be practiced in various ways. Further, wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
FIG. 1 is a block diagram of a self-luminous display device according to an embodiment of the invention. Referring to fig. 1, the self-luminous display device 100 may include a pixel array 120, a display driving circuit 140 and a compensation estimation circuit 160, but the invention is not limited thereto.
The pixel array 120 has a plurality of pixel units PX arranged in an array, wherein the pixel units PX can be self-emitting units such as organic light emitting diode pixel units, micro light emitting diode pixel units, or quantum dot active organic light emitting diode pixel units, but the invention is not limited thereto. In addition, the pixel array 120 further includes a plurality of scan lines SL and a plurality of data lines DL, wherein the pixel units PX are electrically connected to the corresponding scan lines SL and the corresponding data lines DL, respectively.
The compensation estimation circuit 160 is coupled to the display driving circuit 140. The compensation estimation circuit 160 is configured to receive a gray-scale data matrix GLA, where the gray-scale data matrix GLA includes a plurality of original gray-scale data corresponding to the pixel units PX. The compensation estimation circuit 160 may convert the gray-scale data matrix GLA into an original data voltage matrix ODA, wherein the original data voltage matrix ODA includes a plurality of original data voltages corresponding to the pixel units PX.
Specifically, the compensation estimation circuit 160 accumulates the received gray-scale data matrix GLA over time to obtain an accumulated gray-scale matrix SGA, wherein the accumulated gray-scale matrix SGA includes a plurality of accumulated gray-scale values corresponding to the pixel units PX. The compensation estimation circuit 160 may determine the brightness attenuation degree of the pixel units PX according to the accumulated gray-scale matrix SGA, and generate a first compensation voltage matrix CDN according to the gray-scale data matrix GLA and the brightness attenuation degree of the pixel units PX, wherein the first compensation voltage matrix CDN includes a plurality of first compensation voltages corresponding to the pixel units PX. The compensation estimation circuit 160 may generate a compensated data voltage matrix CDA according to the original data voltage matrix ODA and the first compensation voltage matrix CDN, where the compensated data voltage matrix CDA includes a plurality of compensated data driving voltages VDATA, and the compensated data driving voltages VDATA correspond to the pixel units PX, respectively.
In an embodiment of the invention, the compensated data voltage matrix CDA is a sum of the original data voltage matrix ODA and the first compensation voltage matrix CDN.
In an embodiment of the present invention, the compensation estimation circuit 160 can be implemented by a processor or a microcontroller, but the present invention is not limited thereto.
The display driving circuit 140 is coupled to the compensation estimating circuit 160 to receive the compensated data voltage matrix CDA and is coupled to the scan lines SL and the data lines DL of the pixel array 120. The display driving circuit 140 may sequentially generate the scan driving voltage VSCAN to the scan lines SL and may output the compensated data driving voltage VDATA to the data lines DL to drive the pixel units PX to emit light and improve the luminance accuracy of the pixel units PX.
In an embodiment of the invention, the display driving circuit 140 may include a timing control circuit, a data line driving circuit and a scan line driving circuit, but the invention is not limited thereto. The timing control circuit, the data line driving circuit and the scan line driving circuit can be implemented by using the existing timing control circuit, data line driving circuit and scan line driving circuit, respectively, and the implementation details and related operations thereof are well known to those skilled in the art, and thus are not described herein again.
In an embodiment of the invention, the compensation estimation circuit 160 may convert the accumulated gray-scale matrix SGA into an accumulated number matrix SNA according to the conversion parameter NR, wherein the accumulated number matrix SNA includes a plurality of accumulated number values corresponding to the pixel units PX. The compensation estimation circuit 160 may determine the brightness attenuation degree of the pixel units PX according to the accumulated number of times matrix SNA, wherein the conversion parameter NR is associated with the material characteristics of the pixel units PX.
In detail, based on the material characteristics of the pixel unit PX, the luminance of the pixel unit PX is attenuated as the accumulated gray-scale value (or the accumulated number of times) of the pixel unit PX is increased while the data driving voltage of the pixel unit PX is maintained. Therefore, the designer can perform the luminance test on the pixel array 120 according to different data driving voltages to obtain the relationship curve among the data driving voltage, the luminance value of the pixel unit PX and the luminance attenuation degree of the pixel unit PX as shown in fig. 2A, where the curve L100 is a luminance curve where the luminance of the pixel unit PX is not attenuated (i.e., the original luminance), the curve L99 is a luminance curve where the luminance of the pixel unit PX is 99% of the original luminance, the curve L81 is a luminance curve where the luminance of the pixel unit PX is 81% of the original luminance, and the curve L80 is a luminance curve where the luminance of the pixel unit PX is 80% of the original luminance.
As can be seen from fig. 2A, as the degree of luminance attenuation of the pixel unit PX is larger, the data driving voltage to be supplied is also increased if the luminance of the pixel unit PX is maintained at the specific luminance value LG1 (or LG 2). For example, in the case where the luminance of the pixel unit PX is 99% of the original luminance, if the luminance of the pixel unit PX is to be set at the luminance value LG1, the data driving voltage must be increased from the voltage value V10 corresponding to the original luminance to the voltage value V11. The voltage difference Δ V1 between the voltage values V11 and V10 is the first compensation voltage corresponding to the luminance value LG1 when the luminance of the pixel unit PX is 99% of the original luminance. Similarly, in the case where the luminance of the pixel unit PX is 81% of the original luminance, if the luminance of the pixel unit PX is to be set at the luminance value LG1, the data driving voltage must be increased from the voltage value V10 corresponding to the original luminance to the voltage value V1N. The voltage difference Δ VN between the voltage values V1N and V10 is the first compensation voltage corresponding to the luminance value LG1 in the case where the luminance of the pixel unit PX is 81% of the original luminance.
In addition, the designer may set the conversion parameter NR according to the material characteristics of the pixel unit PX, and may obtain the correspondence between the degree of luminance attenuation of the pixel unit PX and the accumulated number of times of the pixel unit PX according to the material characteristics of the pixel unit PX. Therefore, the designer can convert the relationship curve shown in fig. 2A into the relationship curve among the data driving voltage, the luminance value of the pixel unit PX, and the accumulated number value of the pixel unit PX as shown in fig. 2B according to the conversion parameter NR and the corresponding relationship between the luminance attenuation degree of the pixel unit PX and the accumulated number value of the pixel unit PX. In this way, the designer can build the LUT1 according to the relationship shown in fig. 2A or fig. 2B.
In an embodiment of the invention, the compensation estimation circuit 160 may respectively find the first compensation voltages corresponding to the pixel units PX in the lookup table LUT1 according to the gray-scale data matrix GLA and the accumulated number matrix SNA.
For example, assume that the conversion parameter NR is 5 (i.e. each cumulative five-gray-scale value corresponds to a cumulative number), and the original gray-scale data of the pixel units PX in the first frame and the second frame are 15 gray-scale values and 30 gray-scale values, respectively. Therefore, the accumulated gray scale value of the pixel unit PX in the two frames is 45 gray scale values, and the accumulated number of times of the pixel unit PX in the two frames is 9 times
In addition, it is assumed that when the accumulated number of times reaches Y times, the luminance of the pixel unit PX will be attenuated to 99% of the original luminance. If the cumulative count value of the pixel unit PX on the current frame has reached Y times, and the original data voltage of the pixel unit PX after the original gray-scale data of the current frame is converted is V10, the compensation estimation circuit 160 can know that the original luminance value corresponding to the original data voltage (V10) is LG1 according to the curve L100 of fig. 2A, and the compensation estimation circuit 160 can obtain the first compensation voltage Δ V1 in the relationship curve (or the corresponding look-up table LUT1) shown in fig. 2B according to the luminance value (LG 1) and the cumulative count value (Y times). In addition, the compensation estimation circuit 160 may add the original data voltage (i.e., V10) and the first compensation voltage (i.e., Δ V1) to obtain a compensated data driving voltage (i.e., V11), and the display driving circuit 140 may drive the pixel unit PX according to the compensated data driving voltage (i.e., V11), so that the pixel unit PX may display a correct luminance value (i.e., LG1), thereby reducing an influence of the material characteristics of the pixel unit PX on the display luminance of the pixel unit PX.
In an embodiment of the invention, the compensation estimation circuit 160 may also download data from the cloud database to update the look-up table LUT1 according to actual application or design requirements.
Fig. 3 is a flowchart illustrating steps of a display compensation method according to an embodiment of the invention, which can be applied to the self-luminous display device 100 of fig. 1, but is not limited thereto. Referring to fig. 1 and fig. 3 together, the display frame compensation method of the present exemplary embodiment includes the following steps. First, in step S310, the compensation estimation circuit 160 converts the gray-scale data matrix GLA into an original data voltage matrix ODA, and accumulates the received gray-scale data matrix GLA with time to obtain an accumulated gray-scale matrix SGA corresponding to the pixel units PX. Next, in step S320, the compensation estimation circuit 160 determines the brightness attenuation degree of the pixel units PX according to the accumulated gray-scale matrix SGA. Then, in step S330, a first compensation voltage matrix CDN is generated by the compensation estimation circuit 160 according to the gray-scale data matrix GLA and the brightness attenuation degree of the pixel units PX. Next, in step S340, the compensated data voltage matrix CDA is generated by the compensation estimation circuit 160 according to the original data voltage matrix ODA and the first compensation voltage matrix CDN. Then, in step S350, the pixel units PX are driven by the display driving circuit 140 according to the compensated data voltage matrix CDA.
In addition, other details of the display frame compensation method according to the embodiment of fig. 3 of the present invention can be obtained from the descriptions of the embodiments of fig. 1 to fig. 2B to obtain sufficient teaching, suggestion and implementation descriptions, and thus are not repeated.
Please refer to fig. 1 again. In an embodiment of the invention, the compensation estimation circuit 160 can also calculate the operation time of the self-luminous display device 100 after the self-luminous display device 100 is turned on. The compensation estimation circuit 160 can generate a second compensation voltage matrix CDT according to the gray-scale data matrix GLA and the operation time of the self-luminous display device 100, wherein the second compensation voltage matrix CDT includes a plurality of second compensation voltages corresponding to the pixel units PX. The compensation estimation circuit 160 may generate a compensated data voltage matrix CDA according to the original data voltage matrix ODA, the first compensation voltage matrix CDN, and the second compensation voltage matrix CDT. In this way, not only the influence of the material characteristics of the pixel unit PX on the display luminance of the pixel unit PX can be reduced, but also the influence of the temperature rise after long-term operation on the display luminance of the pixel unit PX can be effectively reduced.
In an embodiment of the invention, the compensated data voltage matrix CDA is a sum of the original data voltage matrix ODA, the first compensation voltage matrix CDN and the second compensation voltage matrix CDT.
In an embodiment of the invention, the compensation estimation circuit 160 may find the second compensation voltages corresponding to the pixel units PX in the on/off curve look-up table LUT2 according to the gray-scale data matrix GLA and the operation time of the self-luminous display device 100. The way in which the switching curve look-up table LUT2 is built is described below.
In detail, as shown in fig. 1, the self-light emitting display device 100 may further include a sensing circuit 180. The sensing circuit 180 is coupled to the pixel array 120 and the compensation estimation circuit 160. The sensing circuit 180 is configured to sense a current of each of the pixel units PX and accordingly generate a plurality of sensing current values respectively corresponding to the pixel units PX. In an embodiment of the present invention, the sensing circuit 180 may be implemented by using an existing current sensor, but is not limited thereto.
When the self-luminous display device 100 is turned on to perform a power-on operation, the compensation estimation circuit 160 may provide a data driving voltage to drive the pixel units PX through the display driving circuit 140. The compensation estimation circuit 160 can obtain the sensing current value SI at power-on through the sensing circuit 180. The compensation estimation circuit 160 can establish a first current-voltage relationship curve TL _ ON as shown in fig. 4A according to the data driving voltage and the sensing current value SI at power-ON.
In addition, when the self-luminous display device 100 is turned off to perform a power-off operation, the compensation estimation circuit 160 may provide a data driving voltage to drive the pixel units PX through the display driving circuit 140. The compensation estimation circuit 160 can obtain the sensing current value SI when the power is off through the sensing circuit 180. The compensation estimation circuit 160 can establish a second current-voltage relationship curve TL _ OFF as shown in FIG. 4A according to the data driving voltage and the sensing current value SI during shutdown. The compensation estimation circuit 160 may establish the switching curve look-up table LUT2 according to the first current-voltage relationship curve TL _ ON and the second current-voltage relationship curve TL _ OFF.
Please refer to fig. 1 and fig. 4A together. In an embodiment of the invention, the compensation estimation circuit 160 obtains current-voltage relationship curves TL 1-TLN of the self-luminous display device 100 during other operation times by an interpolation method according to the first current-voltage relationship curve TL _ ON and the second current-voltage relationship curve TL _ OFF, wherein the current-voltage relationship curves TL 1-TLN are current-voltage relationship curves during the operation times T1-TN, respectively. The compensation estimation circuit 160 may establish the ON/OFF curve look-up table LUT2 according to the first current-voltage relationship curve TL _ ON, the second current-voltage relationship curve TL _ OFF, and the other current-voltage relationship curves TL 1-TLN during operation, but is not limited thereto. In another embodiment of the present invention, the current-voltage relationship curves TL 1-TLN of the self-luminous display device 100 during other operation times can also be provided by the manufacturer of the pixel array 120.
In an embodiment of the invention, the second current-voltage relationship TL _ OFF may be established by the compensation estimation circuit 160 during a previous shutdown operation, and the first current-voltage relationship TL _ ON may be established by the compensation estimation circuit 160 during a current startup operation (i.e., a current startup operation). Therefore, the compensation estimation circuit 160 builds the ON/OFF curve look-up table LUT2 according to the first current-voltage relationship TL _ ON obtained in the current power-ON operation and the second current-voltage relationship TL _ OFF obtained in the previous power-OFF operation.
In an embodiment of the invention, the compensation estimation circuit 160 can convert the current-voltage relationship curves TL _ ON, TL 1-TLN and TL _ OFF shown in fig. 4A into the relationship curves LL _ ON, LL 1-LLN and LL _ OFF shown in fig. 4B, wherein the relationship curves LL _ ON, LL 1-LLN and LL _ OFF are the luminance-voltage relationship curves at power-ON, operation time T1-TN and power-OFF, respectively.
In an embodiment of the invention, the compensation estimation circuit 160 may further convert the relationship curve shown in fig. 4B into a relationship curve among the data driving voltage, the luminance value of the pixel unit PX and the operation time as shown in fig. 4C, and establish the on/off curve look-up table LUT2 according to the relationship curve shown in fig. 4C.
As can be seen from fig. 4A to 4C, when the data driving voltage of the pixel unit PX is maintained, the current value of the pixel unit PX decreases with the increase of the operation time of the self-light emitting display device 100, so that the luminance of the pixel unit PX decreases with the increase of the operation time of the self-light emitting display device 100. For example, when the operation time of the self-luminous display device 100 is T1, if the brightness of the pixel unit PX is set at the brightness value LG1, the data driving voltage must be increased from the voltage value V20 at power-on to the voltage value V21. The voltage difference Δ V1' between the voltage values V21 and V20 is the second compensation voltage corresponding to the luminance value LG1 under the operating time T1. Similarly, when the operation time of the self-luminous display device 100 is TN, if the brightness of the pixel unit PX is to be set at the brightness value LG1, the data driving voltage must be increased from the voltage value V20 at power-on to the voltage value V2N. The voltage difference Δ VN' between the voltage values V2N and V20 is the second compensation voltage corresponding to the luminance value LG1 under the condition of the operation time TN.
In an embodiment of the invention, the compensation estimation circuit 160 may also download data from the cloud database to update the power-on/off curve look-up table LUT2 according to actual application or design requirements.
FIG. 5 is a flowchart illustrating a method for compensating a display screen according to another embodiment of the invention, which can be applied to the self-luminous display device 100 of FIG. 1, but is not limited thereto. Referring to fig. 1, fig. 4A to fig. 4C and fig. 5 together, the display frame compensation method of fig. 5 includes the following steps. First, in step S500, when the self-luminous display device 100 performs a power-ON operation, the compensation estimation circuit 160 establishes a first current-voltage relationship TL _ ON according to the data driving voltage provided to the pixel unit PX and the obtained sensing current value SI. Next, in step S510, the compensation estimation circuit 160 builds the ON/OFF curve look-up table LUT2 according to a first current-voltage relationship curve TL _ ON obtained from the current power-ON operation of the self-luminous display device 100 and a second current-voltage relationship curve TL _ OFF obtained from the previous power-OFF operation of the self-luminous display device 100. After step S510, steps S310, S320, and S330 may be executed, wherein steps S310, S320, and S330 of fig. 5 are similar to steps S310, S320, and S330 of fig. 3, respectively, so that the above description of fig. 3 may be referred to, and are not repeated herein.
In addition, after step S510, steps S520 and S530 may also be performed next. In detail, in step S520, the operation time of the self-luminous display device 100 can be calculated by the compensation estimation circuit 160. Next, in step S530, a second compensation voltage matrix CDT is generated by the compensation estimation circuit 160 according to the gray-scale data matrix GLA and the operation time of the self-luminous display device 100, wherein the second compensation voltage matrix CDT includes a plurality of second compensation voltages corresponding to the pixel units PX. In detail, the compensation estimation circuit 160 can find the second compensation voltages in the on/off curve look-up table LUT2 according to the gray-scale data matrix GLA and the operation time of the self-luminous display device 100. Then, in step S540, the compensation estimation circuit 160 may generate a compensated data voltage matrix CDA according to the original data voltage matrix ODA, the first compensation voltage matrix CDN and the second compensation voltage matrix CDT. Next, in step S550, the display driving circuit 140 drives the pixel units PX according to the compensated data voltage matrix CDA.
Then, in step S560, the compensation estimation circuit 160 determines whether the self-luminous display device 100 is to be powered off. If the determination result in the step S560 is negative, the process returns to the steps S310 and S520 to perform the next compensation operation for the display frame. If the determination result in the step S560 is yes, in a step S570, when the self-luminous display device 100 performs a shutdown operation, the compensation estimation circuit 160 establishes a second current-voltage relationship curve TL _ OFF according to the data driving voltage provided to the pixel unit PX and the obtained sensing current value SI, and the second current-voltage relationship curve TL _ OFF can be used to establish the shutdown curve look-up table LUT2 when the self-luminous display device 100 is turned on next time.
In addition, other details of the display frame compensation method according to the embodiment of fig. 5 of the present invention can be obtained from the descriptions of the embodiments of fig. 1 to fig. 4C to obtain sufficient teaching, suggestion and implementation descriptions, and thus are not repeated.
In summary, in the self-luminous display device and the compensation method for display image thereof according to the embodiments of the invention, the compensation estimation circuit can determine the brightness attenuation degree of the pixel units according to the accumulated gray-scale matrix, and accordingly provide the compensated data voltage matrix. The display driving circuit can drive the pixel units according to the compensated data voltage matrix, so that the pixel units display correct brightness, and the influence of the material characteristics of the pixel units on the display brightness of the pixel units is reduced. In addition, the compensation estimation circuit can judge the brightness attenuation degree of the pixel units according to the accumulated gray scale matrix and the operation time of the self-luminous display device at the same time, and accordingly provide a compensated data voltage matrix. Therefore, the influence of the material characteristics of the pixel unit on the display brightness of the pixel unit can be reduced, and the influence of the temperature rise after long-term operation on the display brightness of the pixel unit can be effectively reduced.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims (12)

1. A self-luminous display device, comprising:
a pixel array having a plurality of pixel units arranged in an array;
the display driving circuit is coupled with the pixel array and used for receiving the compensated data voltage matrix and driving the pixel units according to the compensated data voltage matrix; and
a compensation estimation circuit coupled to the display driving circuit, wherein the compensation estimation circuit receives a gray scale data matrix and converts the gray scale data matrix into an original data voltage matrix,
wherein the compensation estimation circuit accumulates the received gray scale data matrix over time to obtain an accumulated gray scale matrix corresponding to the plurality of pixel units, determines a brightness attenuation degree of the plurality of pixel units according to the accumulated gray scale matrix, generates a first compensation voltage matrix according to the gray scale data matrix and the brightness attenuation degree of the plurality of pixel units, and generates the compensated data voltage matrix according to the original data voltage matrix and the first compensation voltage matrix,
the compensation estimation circuit converts the accumulated gray scale matrix into an accumulated time matrix according to a conversion parameter, and judges the brightness attenuation degree of the pixel units according to the accumulated time matrix, wherein the conversion parameter is related to the material characteristics of the pixel units.
2. The self-light emitting display device of claim 1, wherein the first compensation voltage matrix comprises a plurality of first compensation voltages, and the compensation estimation circuit finds the plurality of first compensation voltages corresponding to the plurality of pixel units in a lookup table according to the gray scale data matrix and the accumulated number matrix.
3. The self-luminous display device as claimed in claim 1, wherein the compensation estimation circuit calculates an operation time of the self-luminous display device after the self-luminous display device is turned on, the compensation estimation circuit generates a second compensation voltage matrix according to the gray scale data matrix and the operation time, and the compensation estimation circuit generates the compensated data voltage matrix according to the original data voltage matrix, the first compensation voltage matrix and the second compensation voltage matrix.
4. The self-light emitting display device of claim 3, wherein the second compensation voltage matrix comprises a plurality of second compensation voltages, and the compensation estimation circuit finds the plurality of second compensation voltages corresponding to the plurality of pixel units in a power-on/off curve lookup table according to the gray scale data matrix and the operation time.
5. The self-light emitting display device according to claim 4, further comprising:
a sensing circuit coupled to the pixel array and the compensation estimation circuit for sensing a current of each of the plurality of pixel units and generating a plurality of sensing current values corresponding to the plurality of pixel units respectively,
wherein when the self-luminous display device executes a power-on operation, the compensation estimation circuit provides a data driving voltage to drive the pixel units through the display driving circuit, the compensation estimation circuit obtains the sensing current values when the self-luminous display device is powered on through the sensing circuit, and the compensation estimation circuit establishes a first current-voltage relation curve according to the data driving voltage and the sensing current values when the self-luminous display device is powered on,
wherein when the self-luminous display device executes shutdown operation, the compensation estimation circuit provides the data driving voltage through the display driving circuit to drive the pixel units, the compensation estimation circuit obtains the sensing current values during shutdown through the sensing circuit, and the compensation estimation circuit establishes a second current-voltage relation curve according to the data driving voltage and the sensing current values during shutdown,
the compensation estimation circuit establishes the startup and shutdown curve lookup table according to the first current-voltage relation curve and the second current-voltage relation curve.
6. The self-light emitting display device according to claim 5, wherein the compensation estimation circuit builds the on/off curve lookup table according to the first current-voltage relationship curve obtained from a current power-on operation and the second current-voltage relationship curve obtained from a previous power-off operation.
7. A display screen compensation method for a self-luminous display device including a plurality of pixel units arranged in an array, a display drive circuit, and a compensation estimation circuit, the display screen compensation method comprising:
converting a gray scale data matrix into an original data voltage matrix through the compensation estimation circuit, and accumulating the received gray scale data matrix along with time to obtain an accumulated gray scale matrix corresponding to the plurality of pixel units;
judging the brightness attenuation degree of the pixel units according to the accumulated gray scale matrix through the compensation estimation circuit, wherein the judgment comprises the following steps:
converting the cumulative grayscale matrix into a cumulative number of times matrix according to a conversion parameter, wherein the conversion parameter is associated with a material characteristic of the plurality of pixel units; and
judging the brightness attenuation degree of the pixel units according to the accumulated time matrix;
generating a first compensation voltage matrix according to the gray scale data matrix and the brightness attenuation degree of the plurality of pixel units by the compensation estimation circuit;
generating a compensated data voltage matrix according to the original data voltage matrix and the first compensation voltage matrix through the compensation estimation circuit; and
and driving the plurality of pixel units according to the compensated data voltage matrix through the display driving circuit.
8. The method according to claim 7, wherein the first compensation voltage matrix comprises a plurality of first compensation voltages, and the step of generating the first compensation voltage matrix according to the gray-scale data matrix and the brightness attenuation degree of the plurality of pixel units comprises:
and respectively searching the plurality of first compensation voltages corresponding to the plurality of pixel units in a lookup table according to the gray scale data matrix and the accumulated times matrix.
9. The display compensation method of claim 7, further comprising:
after the self-luminous display device is started up, calculating the operation time of the self-luminous display device through the compensation estimation circuit;
generating a second compensation voltage matrix according to the gray scale data matrix and the operation time through the compensation estimation circuit; and
and generating the compensated data voltage matrix according to the original data voltage matrix, the first compensation voltage matrix and the second compensation voltage matrix through the compensation estimation circuit.
10. The method according to claim 9, wherein the second compensation voltage matrix comprises a plurality of second compensation voltages, and the step of generating the second compensation voltage matrix according to the gray-scale data matrix and the operation time comprises:
and searching the plurality of second compensation voltages corresponding to the plurality of pixel units in a power-on/off curve lookup table according to the gray scale data matrix and the operation time.
11. The display compensation method of claim 10, further comprising:
when the self-luminous display device executes startup operation, the display driving circuit provides data driving voltage to drive the pixel units, the sensing circuit obtains a plurality of sensing current values during startup, and the compensation estimation circuit establishes a first current-voltage relation curve according to the data driving voltage and the sensing current values during startup;
when the self-luminous display device executes shutdown operation, the display driving circuit provides the data driving voltage to drive the pixel units, the sensing circuit obtains the sensing current values during shutdown, and the compensation estimation circuit establishes a second current-voltage relation curve according to the data driving voltage and the sensing current values during shutdown; and
and establishing the startup and shutdown curve lookup table according to the first current-voltage relation curve and the second current-voltage relation curve through the compensation estimation circuit.
12. The method according to claim 11, wherein the step of building the power-on/off curve lookup table according to the first current-voltage relationship curve and the second current-voltage relationship curve comprises:
and establishing the startup and shutdown curve lookup table according to the first current-voltage relation curve obtained in the current startup operation and the second current-voltage relation curve obtained in the previous shutdown operation.
CN201910774201.XA 2019-08-21 2019-08-21 Self-luminous display device and display picture compensation method thereof Active CN112419962B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910774201.XA CN112419962B (en) 2019-08-21 2019-08-21 Self-luminous display device and display picture compensation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910774201.XA CN112419962B (en) 2019-08-21 2019-08-21 Self-luminous display device and display picture compensation method thereof

Publications (2)

Publication Number Publication Date
CN112419962A CN112419962A (en) 2021-02-26
CN112419962B true CN112419962B (en) 2022-04-19

Family

ID=74780113

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910774201.XA Active CN112419962B (en) 2019-08-21 2019-08-21 Self-luminous display device and display picture compensation method thereof

Country Status (1)

Country Link
CN (1) CN112419962B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113096576B (en) * 2021-04-02 2023-05-26 京东方科技集团股份有限公司 Brightness compensation method and device and display device
US11908376B1 (en) * 2021-04-06 2024-02-20 Apple Inc. Compensation schemes for 1x1 sub-pixel uniformity compensation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730090B (en) * 2014-01-13 2015-10-14 西北工业大学 OLED luminescence efficiency through time decay digital compensation correcting circuit and method
CN105895056B (en) * 2016-06-17 2017-04-19 京东方科技集团股份有限公司 Method for establishing luminance compensation model and screen luminance compensation method and screen luminance compensation device
CN107274834B (en) * 2017-08-08 2019-09-24 深圳市华星光电半导体显示技术有限公司 A kind of AMOLED display panel luminance compensation method and device
CN109686303B (en) * 2019-01-28 2021-09-17 厦门天马微电子有限公司 Organic light-emitting display panel, organic light-emitting display device and compensation method
CN109584797B (en) * 2019-02-01 2020-11-24 京东方科技集团股份有限公司 Compensation method and compensation system of display panel and display device

Also Published As

Publication number Publication date
CN112419962A (en) 2021-02-26

Similar Documents

Publication Publication Date Title
CN109599060B (en) Pixel compensation method, pixel compensation system and display device
KR102212424B1 (en) Display deviceand driving method thereof
TWI598866B (en) A data processing device for a display device, a data processing method for the display device and the display device
KR100707637B1 (en) Light emitting display and control method of the same
TWI622037B (en) Display device including controlling units for compensating color characteristics
TW201426712A (en) Organic light emitting display device and method for driving thereof
KR20100038394A (en) Display device
JP2004354635A (en) Electrooptical apparatus, driving method of electrooptical apparatus, and electronic equipment
KR102084711B1 (en) Display deviceand driving method thereof
KR102070375B1 (en) Organic light emitting display device and method for driving the same
CN112419962B (en) Self-luminous display device and display picture compensation method thereof
WO2020232588A1 (en) Screen brightness control apparatus and method
US11222597B2 (en) Display device and method for controlling same
US11322075B2 (en) Optical compensation system and optical compensation method of display device
CN113593474B (en) Gamma debugging method, display driving chip and display device
US11398182B2 (en) Display device and method of driving the same
KR102335763B1 (en) Organic light emitting display device and driving method thereof
CN108831381A (en) Show data alignment system and display data adjustment method
TWI711024B (en) Self-illuminating display apparatus and display frame compensation method thereof
KR100820719B1 (en) Method of Driving Organic Electroluminescent Display To Compensate Brightness of Bad Pixel thereof and Organic Electroluminescent Display used in the same
CN110517635B (en) Drive chip and display device
KR102612035B1 (en) Display device and driving method thereof
CN117275382A (en) Display device and method of driving the same
KR20160083591A (en) Driving method of organic electroluminescent display apparatus
KR102626055B1 (en) Apparatus for testing display panel and method for testing display panel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant