CN-121986370-A - Display adjusting method, display adjusting module and display device

CN121986370ACN 121986370 ACN121986370 ACN 121986370ACN-121986370-A

Abstract

A display adjustment method, a display adjustment module and a display device are provided. The display adjusting method comprises the steps of controlling a display panel to be at a specific temperature in a debugging stage, providing a first preset gray-scale voltage for sub-pixels, adjusting a voltage value of a first voltage signal provided to a first voltage end, detecting display brightness of the display panel until a difference value between the detected display brightness of the display panel and a first expected brightness is within a brightness difference range, taking the difference value between the voltage value of the first voltage signal and a first standard voltage value as a first compensation voltage, and recording the first compensation voltage in a compensation voltage meter (S1). By adopting a dynamic first voltage signal scheme, the voltage values of the corresponding first voltage signals are set at different temperatures, so that the stability of brightness is ensured, and the display brightness of the display panel is less influenced by temperature.

Inventors

LI GEN
FENG XUEHUAN
LI WEI
YANG HENG
DU ZHENGXING
HUANG YINGLONG
ZHANG JIE
LIU ZHEN

Assignees

京东方科技集团股份有限公司
成都京东方光电科技有限公司

Dates

Publication Date: 20260505
Application Date: 20240830

Claims (20)

The display adjusting method is applied to a display device, and comprises a display panel, wherein the display panel comprises pixels, the pixels comprise a plurality of sub-pixels, the sub-pixels comprise light emitting elements, and cathodes of the light emitting elements are electrically connected with a first voltage end; The debugging step comprises the steps of controlling the display panel to be at a specific temperature in a debugging stage, providing a first preset gray scale voltage for the sub-pixels, adjusting the voltage value of a first voltage signal provided to the first voltage end, detecting the display brightness of the display panel until the detected difference value between the display brightness of the display panel and a first expected brightness is within a brightness difference range, taking the difference value between the voltage value of the first voltage signal and a first standard voltage value as a first compensation voltage, and recording the first compensation voltage in a compensation voltage meter.
The display adjustment method according to claim 1, wherein the display adjustment method further comprises a display adjustment step provided after the debugging step; The display adjusting step comprises the steps of detecting the actual temperature of the display panel in a display stage, acquiring corresponding first compensation voltage from the compensation voltage meter according to the actual temperature, and providing a compensated first voltage signal to the first voltage end, wherein the voltage value of the compensated first voltage signal is the sum value of the first standard voltage value and the first compensation voltage.
The display adjustment method of claim 2, wherein the sub-pixel further comprises an initialization circuit electrically connected to an initial control terminal, an initial voltage terminal, and an anode of the light emitting element, respectively, for writing an initial voltage signal provided from the initial voltage terminal to the anode of the light emitting element under control of an initial control signal provided from the initial control terminal, the step of debugging further comprising: In the debugging stage, when the voltage value of the first voltage signal is regulated, the voltage value of the initial voltage signal is correspondingly regulated, so that the difference value between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a preset voltage difference value.
The display adjustment method according to claim 3, wherein, in a debugging phase, after recording the first compensation voltage in a first compensation voltmeter, the debugging step further comprises: Providing a second preset gray scale voltage for the sub-pixels, regulating the voltage value of the initial voltage signal, detecting the display brightness of the display panel until the difference value between the detected display brightness of the display panel and a second expected brightness is within a brightness difference range, taking the difference value between the voltage value of the initial voltage signal and a second standard voltage value as a second compensation voltage, and recording the second compensation voltage in a compensation voltage table; The gray scale value corresponding to the second preset gray scale voltage is smaller than the gray scale value corresponding to the first preset gray scale voltage.
The display adjustment method according to claim 4, wherein the second predetermined gray-scale voltage corresponds to a gray-scale value of less than or equal to 32.
The display adjustment method according to claim 4 or 5, wherein the display adjustment step includes, in a display stage, acquiring a corresponding second compensation voltage from the compensation voltage table according to the actual temperature, and providing a compensated initial voltage signal to the initial voltage terminal; The voltage value of the compensated initial voltage signal is the sum of a second standard voltage value and the second compensation voltage.
The display adjustment method according to claim 1, wherein the display adjustment method includes N number of adjustment steps corresponding to an N number of display brightness adjustment ranges, N is an integer greater than 1, N is a positive integer less than or equal to N, the N number of adjustment steps includes an N number of first adjustment periods, the N number of adjustment steps includes: In an nth first debugging period, controlling the display panel to be at a specific temperature, providing an nth first preset gray scale voltage for the sub-pixels, adjusting the voltage value of a first voltage signal provided to the first voltage end, detecting the display brightness of the display panel until the difference value between the detected display brightness of the display panel and the nth first expected brightness is within a brightness difference range, taking the difference value between the voltage value of the first voltage signal and a first standard voltage value as an nth first compensation voltage, and recording the difference value in the compensation voltage table; The nth first predetermined gray scale voltage is a first predetermined gray scale voltage corresponding to a first predetermined gray scale value in the nth display brightness adjustment range, and the highest display brightness of the display panel is the nth highest brightness in the nth display brightness adjustment range.
The display adjustment method according to claim 7, wherein the display adjustment method further comprises a display adjustment step provided after the debugging step; The display adjusting step comprises the steps of detecting the actual temperature of the display panel in a display stage, acquiring corresponding first compensation voltage from the compensation voltage meter according to the actual temperature and the display brightness adjusting range of the display panel, and providing a compensated first voltage signal to the first voltage end, wherein the voltage value of the compensated first voltage signal is the sum value of the first standard voltage value and the first compensation voltage.
The display adjustment method according to claim 8, wherein the sub-pixel further comprises an initialization circuit electrically connected to an initial control terminal, an initial voltage terminal, and an anode of the light emitting element, respectively, for writing an initial voltage signal provided from the initial voltage terminal to the anode of the light emitting element under control of an initial control signal provided from the initial control terminal, the n-th debugging step further comprising: And in the nth first debugging time period, when the voltage value of the first voltage signal is regulated, correspondingly regulating the voltage value of the initial voltage signal, so that the difference value between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a preset voltage difference value.
The display adjustment method according to claim 9, wherein the nth debug stage further includes an nth second debug period disposed after the nth first debug period, the nth debug step further comprising: providing an nth second preset gray scale voltage for the sub-pixels in the nth second debugging time period, adjusting the voltage value of the initial voltage signal, detecting the display brightness of the display panel until the detected difference value between the display brightness of the display panel and the nth second expected brightness is within a brightness difference range, taking the difference value between the voltage value of the initial voltage signal and a second standard voltage value as an nth second compensation voltage, and recording the difference value in a compensation voltage table; The gray scale value corresponding to the nth second preset gray scale voltage is smaller than the gray scale value corresponding to the nth first preset gray scale voltage.
The display adjustment method according to claim 10, wherein the display adjustment step includes, in a display stage, acquiring a corresponding second compensation voltage from the compensation voltmeter according to the actual temperature and a display brightness adjustment range in which the display panel is located, and providing a compensated initial voltage signal to the initial voltage terminal; The voltage value of the compensated initial voltage signal is the sum of a second standard voltage value and the second compensation voltage.
The display adjustment method according to claim 9, wherein in the display panel, the pixel includes M sub-pixels having different colors, M is an integer greater than 1, the nth debug stage further includes an nth second debug period disposed after the nth first debug period, the nth second debug period includes M second debug sub-periods, M is a positive integer less than or equal to M, and the nth debug step further includes: Providing an nth second preset gray scale voltage for an mth sub-pixel in the pixel in an mth second debugging time period, adjusting the voltage value of the initial voltage signal, detecting the display brightness of the display panel until the detected difference value between the display brightness of the display panel and an mth row and an mth column second expected brightness is in a brightness difference range, taking the difference value between the voltage value of the initial voltage signal and a second standard voltage value as an mth row and an mth column second compensation voltage, and recording the difference value in a compensation voltage table; The gray scale value corresponding to the nth second preset gray scale voltage is smaller than the gray scale value corresponding to the nth first preset gray scale voltage.
The display adjustment method according to claim 12, wherein the display adjustment step includes: In a display stage, according to the actual temperature, the display brightness adjusting range where the display panel is positioned and the colors of the sub-pixels, acquiring corresponding second compensation voltages from the compensation voltage table, and providing compensated initial voltage signals for initial voltage ends in the sub-pixels with corresponding colors in the display panel; The voltage value of the compensated initial voltage signal is the sum of a second standard voltage value and the second compensation voltage.
The display adjusting module is applied to a display device and comprises a display panel, wherein the display panel comprises pixels, each pixel comprises a plurality of sub-pixels, each sub-pixel comprises a light-emitting element, and the cathode of each light-emitting element is electrically connected with a first voltage end; The temperature control module is used for controlling the display panel to be at a specific temperature in a debugging stage, and then providing a start adjusting signal for the adjusting module; The detection module is used for detecting the brightness of the display panel after receiving the first detection control signal in the debugging stage, providing a first adjustment control signal for the adjustment module when the difference value between the brightness of the display panel and the first expected brightness is not within the brightness difference range, and providing a first stop adjustment signal for the adjustment module when the difference value between the brightness of the display panel and the first expected brightness is within the brightness difference range; The adjusting module is used for providing a first preset gray level voltage for the sub-pixel after receiving a start adjusting signal in a debugging stage, adjusting the voltage value of a first voltage signal provided to the first voltage end, providing a first detection control signal for the detecting module, adjusting the voltage value of the first voltage signal provided to the first voltage end after receiving the first adjusting control signal, providing a first detection control signal for the detecting module, and recording the difference value between the current voltage value of the first voltage signal and a first standard voltage value as a first compensation voltage in a compensation voltage table after receiving the first stop adjusting signal.
The display adjustment module of claim 14, wherein the sub-pixel further comprises an initialization circuit electrically connected to an initial control terminal, an initial voltage terminal, and an anode of the light emitting element, respectively, for writing an initial voltage signal provided by the initial voltage terminal into the anode of the light emitting element under the control of an initial control signal provided by the initial control terminal; The adjusting module is further configured to correspondingly adjust, in the debugging stage, the voltage value of the initial voltage signal when adjusting the voltage value of the first voltage signal, so that a difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.
The display adjustment module of claim 15, wherein the adjustment module is further configured to, in the debugging stage, provide a second predetermined gray scale voltage to the sub-pixel after the first compensation voltage is recorded in the compensation voltage table, adjust a voltage value of the initial voltage signal, provide a second detection control signal to the detection module, further configured to, after receiving the second adjustment control signal, adjust a voltage value of the initial voltage signal, provide a second detection control signal to the detection module, and record a difference between a current voltage value of the initial voltage signal and a second standard voltage value as a second compensation voltage in the compensation voltage table after receiving the second stop adjustment signal; The detection module is further configured to detect, in a debugging stage, the brightness of the display panel after receiving the second detection control signal, and provide a second adjustment control signal to the adjustment module when a difference between the brightness of the display panel and a second expected brightness is not within a brightness difference range, and provide a second stop adjustment signal to the adjustment module when the difference between the brightness of the display panel and the second expected brightness is within the brightness difference range; The gray scale value corresponding to the second preset gray scale voltage is smaller than the gray scale value corresponding to the first preset gray scale voltage.
The display adjustment module of claim 16, wherein the second predetermined gray-scale voltage has a gray-scale value less than or equal to 32.
The display adjustment module of claim 14, wherein the display period comprises N number of adjustment phases, wherein the N number of adjustment phases corresponds to an N number of adjustment ranges of display brightness, wherein N is an integer greater than 1, and N is a positive integer less than or equal to N; The adjusting module further comprises a range control circuit, wherein the range control circuit is used for controlling the display panel to work in an nth display brightness adjusting range in the nth debugging stage; The temperature control module is used for controlling the display panel to be at a specific temperature in an nth first debugging time period, and then providing an nth starting adjusting signal for the adjusting module; the detection module is used for detecting the brightness of the display panel after receiving the nth first detection control signal in the nth first debugging time period, providing the nth first adjustment control signal for the adjustment module when the difference value between the brightness of the display panel and the first expected brightness is not in the brightness difference range, and providing the nth first stop adjustment signal for the adjustment module when the difference value between the brightness of the display panel and the first expected brightness is in the brightness difference range; The adjusting module is configured to provide an nth first predetermined gray-scale voltage to the sub-pixel after receiving an nth start adjusting signal in a first debugging period, adjust a voltage value of a first voltage signal provided to the first voltage terminal, provide an nth first detection control signal to the detecting module, and adjust the voltage value of the first voltage signal provided to the first voltage terminal after receiving the nth first adjusting control signal, provide an nth first detection control signal to the detecting module, and record a difference value between a current voltage value of the first voltage signal and a first standard voltage value as an nth first compensation voltage in a compensation voltage meter after receiving the nth first stop adjusting signal; The nth first predetermined gray scale voltage is a first predetermined gray scale voltage corresponding to a first predetermined gray scale value in the nth display brightness adjustment range, and the highest display brightness of the display panel is the nth highest brightness in the nth display brightness adjustment range.
The display adjustment module of claim 18, wherein the sub-pixel further comprises an initialization circuit electrically connected to an initial control terminal, an initial voltage terminal, and an anode of the light emitting element, respectively, for writing an initial voltage signal provided by the initial voltage terminal into the anode of the light emitting element under the control of an initial control signal provided by the initial control terminal; The adjusting module is further configured to correspondingly adjust, in the nth first debug time period, the voltage value of the initial voltage signal when adjusting the voltage value of the first voltage signal, so that a difference between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a predetermined voltage difference.
The display adjustment module of claim 19, wherein the nth debug stage further comprises an nth second debug period disposed after the nth first debug period; the adjusting module is further configured to provide an nth second predetermined gray-scale voltage to the sub-pixel in an nth second debugging period, adjust a voltage value of an initial voltage signal, provide an nth second detection control signal to the detecting module, adjust the voltage value of the initial voltage signal after receiving the nth second adjustment control signal, provide an nth second detection control signal to the detecting module, and record a difference value between the voltage value of the current initial voltage signal and a second standard voltage value as an nth second compensation voltage in the compensation voltage table after receiving the nth second stop adjustment signal; The detection module is further configured to detect, in an nth second debug period, after receiving an nth second detection control signal, a luminance of the display panel, and provide an nth second adjustment control signal to the adjustment module when a difference between the luminance of the display panel and an nth second expected luminance is not within a luminance difference range, and provide an nth second stop adjustment signal to the adjustment module when a difference between the luminance of the display panel and an nth second expected luminance is within a luminance difference range; The gray scale value corresponding to the nth second preset gray scale voltage is smaller than the gray scale value corresponding to the nth first preset gray scale voltage.

Description

Display adjusting method, display adjusting module and display device Technical Field The disclosure relates to the technical field of display, and in particular relates to a display adjusting method, a display adjusting module and a display device. Background In the related art, in the display field, an oxide process is often applied because of high uniformity. Internal compensation circuits are of interest in the industry because of the low demands on ICs (integrated circuits) which can greatly reduce costs. However, with the oxide inner patch sub-pixel, the panel brightness may rise at high temperatures (mainly due to the cross-voltage of the OLED (organic light emitting diode) and the mobility of the oxide transistor may change with temperature change). Disclosure of Invention In one aspect, an embodiment of the present disclosure provides a display adjustment method applied to a display device, the display device including a display panel including a pixel including a plurality of sub-pixels, the sub-pixels including a light emitting element, a cathode of the light emitting element being electrically connected to a first voltage terminal; The debugging step comprises the steps of controlling the display panel to be at a specific temperature in a debugging stage, providing a first preset gray scale voltage for the sub-pixels, adjusting the voltage value of a first voltage signal provided to the first voltage end, detecting the display brightness of the display panel until the detected difference value between the display brightness of the display panel and a first expected brightness is within a brightness difference range, taking the difference value between the voltage value of the first voltage signal and a first standard voltage value as a first compensation voltage, and recording the first compensation voltage in a compensation voltage meter. In at least one embodiment of the present disclosure, the display adjustment method further includes a display adjustment step disposed after the debugging step; The display adjusting step comprises the steps of detecting the actual temperature of the display panel in a display stage, acquiring corresponding first compensation voltage from the compensation voltage meter according to the actual temperature, and providing a compensated first voltage signal to the first voltage end, wherein the voltage value of the compensated first voltage signal is the sum value of the first standard voltage value and the first compensation voltage. In at least one embodiment of the present disclosure, the sub-pixel further includes an initialization circuit, where the initialization circuit is electrically connected to an initial control terminal, an initial voltage terminal, and an anode of the light emitting element, and is configured to write an initial voltage signal provided by the initial voltage terminal into the anode of the light emitting element under control of an initial control signal provided by the initial control terminal, and the debugging step further includes: In the debugging stage, when the voltage value of the first voltage signal is regulated, the voltage value of the initial voltage signal is correspondingly regulated, so that the difference value between the voltage value of the first voltage signal and the voltage value of the initial voltage signal is a preset voltage difference value. In at least one embodiment of the present disclosure, in the debugging phase, after recording the first compensation voltage in the first compensation voltmeter, the debugging step further comprises: Providing a second preset gray scale voltage for the sub-pixels, regulating the voltage value of the initial voltage signal, detecting the display brightness of the display panel until the difference value between the detected display brightness of the display panel and a second expected brightness is within a brightness difference range, taking the difference value between the voltage value of the initial voltage signal and a second standard voltage value as a second compensation voltage, and recording the second compensation voltage in a compensation voltage table; The gray scale value corresponding to the second preset gray scale voltage is smaller than the gray scale value corresponding to the first preset gray scale voltage. In at least one embodiment of the present disclosure, the gray-scale value corresponding to the second predetermined gray-scale voltage is less than or equal to 32. In at least one embodiment of the present disclosure, the display adjusting step includes, in a display stage, acquiring a corresponding second compensation voltage from the compensation voltmeter according to the actual temperature, and providing a compensated initial voltage signal to the initial voltage terminal; The voltage value of the compensated initial voltage signal is the sum of a second standard voltage value and the second compensation voltage. In at least one embodiment of