CN112689868A - Display panel, preparation method thereof and display device - Google Patents
Display panel, preparation method thereof and display device Download PDFInfo
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- CN112689868A CN112689868A CN201880095909.6A CN201880095909A CN112689868A CN 112689868 A CN112689868 A CN 112689868A CN 201880095909 A CN201880095909 A CN 201880095909A CN 112689868 A CN112689868 A CN 112689868A
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- 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]
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Abstract
The invention provides a preparation method of a display panel (10), which comprises the steps of determining a target sub-pixel (200) of which the light emitting brightness needs to be adjusted in all sub-pixels (100) of the display panel (10); determining a target parameter value of a preset parameter of the target sub-pixel (200); and forming the target sub-pixel (200) with the target parameter value to compensate the brightness of the target sub-pixel (200) so that the light-emitting brightness values of all the sub-pixels (100) are preset brightness values. The invention also provides a display panel and a display device. The preparation method of the display panel provided by the invention improves the uniformity of the luminous display of the whole display panel by forming the target sub-pixel with the target parameter value.
Description
The invention belongs to the technical field of display, and particularly relates to a display panel, a preparation method of the display panel and a display device.
With the development of display technology, display panel products of organic light emitting display or liquid crystal light emitting display are widely applied to the fields of work, life, operation, aerospace and the like, such as liquid crystal televisions, digital televisions, computers, mobile phones, vehicle-mounted displays, cameras, electronic watches, calculators and the like. The display device mainly comprises a display panel and a driving circuit, wherein the driving circuit provides an anode voltage signal for the display panel to control the display panel to display images. Generally, the voltage source of the driving circuit is disposed at one end of the display area of the display panel. The different distances between the driving circuit and the light-emitting units in different positions can cause the response speeds of the light-emitting units in the display areas in different positions to the anode voltage signals to be different, and for a large-size display panel, the response speeds can be further increased to further cause the problem of uneven image display caused by the different response speeds to be more obvious.
Disclosure of Invention
In view of the above, the present invention provides a display panel with uniform display brightness. The specific technical scheme is as follows.
A preparation method of a display panel comprises the following steps:
determining a target sub-pixel of which the light emitting brightness needs to be adjusted in all sub-pixels of the display panel;
determining a target parameter value of a preset parameter of a target sub-pixel;
and forming a target sub-pixel with the target parameter value to compensate the brightness of the target sub-pixel so that the light-emitting brightness values of all sub-pixels are preset brightness values.
Preferably, the "determining a target subpixel whose light emission luminance needs to be adjusted among all subpixels of the display panel" includes:
obtaining a standard value of a light-emitting parameter of each sub-pixel in the display panel;
acquiring an actual value of a light-emitting parameter of each sub-pixel in a display panel;
and determining the sub-pixel of which the difference value between the actual value of the light-emitting parameter and the standard value of the light-emitting parameter exceeds a preset threshold value as a target sub-pixel of which the light-emitting brightness needs to be adjusted.
Preferably, the "determining a target parameter value of a preset parameter of a target subpixel" includes:
determining a preset parameter of the target sub-pixel, wherein the preset parameter has a compensation effect on a difference value between an actual value of the light-emitting parameter and a standard value of the light-emitting parameter;
and obtaining a target parameter value of the preset parameter according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter.
Preferably, the obtaining the target parameter value of the preset parameter according to the difference between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter includes:
determining a compensation parameter value of the preset parameter according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter;
and obtaining a target parameter value of the preset parameter according to the standard parameter value and the compensation parameter value of the preset parameter.
Preferably, the light-emitting parameter includes at least one of light-emitting brightness, light-emitting voltage, and light-emitting current.
Preferably, the sub-pixel comprises a sub-pixel light emitting unit and a driving thin film transistor, the driving thin film transistor is connected with an anode voltage, and the anode voltage drives the sub-pixel light emitting unit to emit light through the driving thin film transistor; the preset parameters of the sub-pixels comprise at least one of preset parameters of the sub-pixel light emitting units or preset parameters of the driving thin film transistors.
Preferably, the preset parameter of the sub-pixel light-emitting unit includes a size of the sub-pixel light-emitting unit and/or a light-emitting material parameter in the sub-pixel light-emitting unit, and the target parameter value of the sub-pixel light-emitting unit is a specific size value of the sub-pixel light-emitting unit and/or a composition component value of the light-emitting material in the sub-pixel light-emitting unit.
Preferably, a pixel defining layer is disposed on a peripheral side of the sub-pixel light emitting unit, and a size of the sub-pixel light emitting unit is defined by a size of an opening of the pixel defining layer; the step of determining the target parameter value of the preset parameter according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter includes:
obtaining a size compensation value of the sub-pixel light-emitting unit according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter;
obtaining an area compensation value of an opening of a pixel definition layer according to the size compensation value of the sub-pixel light-emitting unit;
determining the area of the pixel definition layer on the peripheral side of the sub-pixel light emitting unit according to the area compensation value of the pixel definition layer to obtain a target area of the pixel definition layer as the target parameter value.
Preferably, the preset parameter of the driving thin film transistor includes a size of the driving thin film transistor or a material parameter of the driving thin film transistor, and the target parameter value of the driving thin film transistor is a specific size value of the driving thin film transistor and/or a composition component value of a material in the driving thin film transistor.
Preferably, the driving thin film transistor comprises a gate electrode, a source electrode, a drain electrode and an active layer, and the size of the driving thin film transistor comprises at least one of the size of the gate electrode, the size of the source electrode, the size of the drain electrode and the size of the active layer; the material parameters of the driving thin film transistor comprise at least one of the material parameters of a grid electrode, a source electrode, a drain electrode and an active layer.
The invention also provides a display panel, which comprises a plurality of sub-pixels, wherein all the sub-pixels comprise target sub-pixels of which the light-emitting brightness needs to be adjusted; and setting a target parameter value of the preset parameter of the target sub-pixel according to a difference value between the actual value of the light-emitting parameter of the corresponding target sub-pixel and the standard value of the light-emitting parameter, so that the light-emitting brightness of each sub-pixel reaches a preset brightness value.
Preferably, the sub-pixel comprises a sub-pixel light emitting unit and a driving thin film transistor, the driving thin film transistor is connected with an anode voltage, and the anode voltage drives the sub-pixel light emitting unit to emit light through the driving thin film transistor; the preset parameters of the sub-pixel comprise at least one of preset parameters of the sub-pixel light emitting unit or preset parameters of the driving thin film transistor.
Preferably, the preset parameter of the sub-pixel light-emitting unit includes a size of the sub-pixel light-emitting unit and/or a light-emitting material parameter in the sub-pixel light-emitting unit, and the target parameter value of the sub-pixel light-emitting unit is a specific size value of the sub-pixel light-emitting unit and/or a composition component value of the light-emitting material in the sub-pixel light-emitting unit.
Preferably, a pixel defining layer is disposed on a peripheral side of the sub-pixel light emitting unit, and a size of the sub-pixel light emitting unit is defined by the pixel defining layer.
Preferably, the preset parameter of the driving thin film transistor includes a size of the driving thin film transistor and/or a material parameter of the driving thin film transistor, and the target parameter value of the driving thin film transistor is a specific size value of the driving thin film transistor and/or a composition component value of a material in the driving thin film transistor.
The invention also provides a display device comprising the display panel according to any one of the above.
The invention has the beneficial effects that: the preparation method of the display panel provided by the invention improves the uniformity of the luminous display of the whole display panel by forming the target sub-pixel with the target parameter value.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a flow chart of a method for manufacturing a display panel according to the present invention.
Fig. 2 is a sub-flowchart of step S100 in fig. 1.
Fig. 3 is a sub-flowchart of step S200 in fig. 1.
Fig. 4 is a sub-flowchart of step S220 in fig. 3.
Fig. 5 is another sub-flowchart of step S220 in fig. 3.
Fig. 6 is a schematic structural diagram of a display panel according to the present invention.
Fig. 7 is a schematic structural diagram of a sub-pixel light-emitting unit and a pixel defining layer in a display panel according to the present invention.
Fig. 8 is a schematic structural diagram of a display device according to the present invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and in the claims, and in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and fig. 6 together, the present invention provides a method for manufacturing a display panel 10, wherein the method for manufacturing the display panel 10 includes steps S100, S200 and S300. The specific steps are described in detail below.
In step S100, a target sub-pixel 200 whose light-emitting brightness needs to be adjusted in all sub-pixels 100 of the display panel 10 is determined. In the display panel 10, due to the different distances from the voltage source, the sub-pixels 100 with inconsistent display brightness appear on the whole display panel 10, generally, the light-emitting brightness of the sub-pixels 100 close to the voltage source is greater than that of the sub-pixels 100 far from the voltage source, or the light-emitting brightness of the sub-pixels 100 in the display panel 10 is inconsistent due to other reasons of the display panel 10, which affects the uniformity of the whole display. In the present invention, the sub-pixel 100 whose light emission luminance needs to be adjusted is defined as the target sub-pixel 200.
Step S200, determining a target parameter value of the preset parameter of the target subpixel 200. The preset parameters refer to the types of the parameters, and the target parameter values refer to specific parameter values of the determined parameter types. In this step both the specific type of the preset parameter and the specific parameter value need to be determined.
In step S300, the target sub-pixel 200 with the target parameter value is formed to compensate the brightness of the target sub-pixel 200 so that the brightness values of all the sub-pixels 100 are the preset brightness values. After determining the target parameter value of the preset parameter of the target sub-pixel 200, preparing and forming the target sub-pixel 200 with the target parameter value, wherein the light emitting brightness value of the target sub-pixel 200 with the target parameter value is the preset brightness value. That is, by forming the target sub-pixels 200 having the target parameter values, the display luminance of the display panel 10 can be made uniform. The preset brightness value may be set according to the actual lighting requirement of the display panel 10, may be a fixed value, or may be a range value different from the fixed value by a preset difference value.
The method for manufacturing the display panel 10 according to the present invention improves the uniformity of the light emitting display of the entire display panel 10 by forming the target sub-pixel 200 having the target parameter value.
Referring to fig. 2, in a further embodiment, the step S100 "of determining the target sub-pixel 200 whose light-emitting brightness needs to be adjusted in all the sub-pixels 100 of the display panel 10" includes the steps S110, S120 and S130. The specific steps are described in detail below.
In step S110, a standard value of the light emitting parameter of each sub-pixel 100 in the display panel 10 is obtained. The standard value of the light emitting parameter of each sub-pixel 100 can be preset, and specifically can be set according to the requirements of the actual application scenario of the display panel 10. In a further embodiment, the light emitting parameter includes at least one of a light emitting brightness, a light emitting voltage, and a light emitting current. The light emission luminance refers to the luminance value of the sub-pixel 100. The light-emitting voltage is a voltage value provided to the sub-pixel 100 for light-emitting display, and the voltage value can reflect the light-emitting brightness of the sub-pixel 100 during operation. The light emitting current is a current value provided to the sub-pixel 100 for light emitting display, and the current value can reflect the light emitting brightness of the sub-pixel 100 during operation. And thus can be set according to at least one of these three light emission parameters.
In step S120, the actual value of the light-emitting parameter of each sub-pixel 100 in the display panel 10 is obtained. It is understood that the actual value of the light emitting parameter of each sub-pixel 100 in the display panel 10 where the target sub-pixel 200 having the target parameter value is not formed is previously tested at least once, wherein the method of testing includes a simulation test or an experimental means test.
In step S130, the sub-pixel 100 whose difference between the actual value of the light-emitting parameter and the standard value of the light-emitting parameter exceeds the preset threshold is determined as the target sub-pixel 200 whose light-emitting brightness needs to be adjusted. If the actual value of the light-emitting parameter is greater than the standard value and the difference value exceeds the preset threshold value, it indicates that the light-emitting brightness of the sub-pixel 100 is too bright, and the sub-pixel 100 is determined as the target sub-pixel 200 whose light-emitting brightness needs to be reduced; when the actual value of the light-emitting parameter is smaller than the standard value and the difference value exceeds the preset threshold value, it is indicated that the light-emitting luminance of the sub-pixel 100 is insufficient, the display is dark, and the sub-pixel 100 is determined to be the target sub-pixel 200 whose light-emitting luminance needs to be improved.
Referring to fig. 3, in a further embodiment, the step S200 "determining the target parameter value of the preset parameter of the target sub-pixel 200" includes steps S210 and S220. The specific steps are described in detail below.
In step S210, a preset parameter of the target sub-pixel 200 having a compensation effect on a difference between the actual value of the light emitting parameter and the standard value of the light emitting parameter is determined. There are a number of preset parameters and this step is used to determine the type of preset parameter that can be used for its compensation. For example, the preset parameter is determined as the size of the target sub-pixel 200.
In step S220, a target parameter value of the preset parameter is obtained according to a difference between the actual value of the light-emitting parameter of the target sub-pixel 200 and the standard value of the light-emitting parameter. This step is used to determine the target parameter value of the preset parameter. Such as a specific size value that determines the size of the target subpixel 200.
Referring to fig. 4, in a further embodiment, the step S220 of obtaining the target parameter value of the predetermined parameter according to the difference between the actual value of the light-emitting parameter of the target sub-pixel 200 and the standard value of the light-emitting parameter includes steps S221-i and S222-i. The specific steps are described in detail below.
In step S221-i, a compensation parameter value of the preset parameter is determined according to a difference value between the actual value of the light-emitting parameter of the target sub-pixel 200 and the standard value of the light-emitting parameter.
And step S222-I, obtaining a target parameter value of the preset parameter according to the standard parameter value and the compensation parameter value of the preset parameter.
In a further embodiment, the sub-pixel 100 includes a sub-pixel light emitting unit 110 and a driving thin film transistor 120, the driving thin film transistor 120 is connected to an anode voltage U, the anode voltage U drives the sub-pixel light emitting unit 110 to emit light through the driving thin film transistor 120, and the preset parameter of the sub-pixel 100 includes at least one of a preset parameter of the sub-pixel light emitting unit 110 or a preset parameter of the driving thin film transistor 120. It is understood that the preset parameters of the sub-pixel 100 are preset parameters of the target sub-pixel 200. It is understood that the sub-pixel light emitting unit 110 may be one of a red sub-pixel light emitting unit, a green sub-pixel light emitting unit, or a blue sub-pixel light emitting unit. It is understood that, in the present invention, the luminance compensation may be performed only on one of the red sub-pixel light emitting unit, the green sub-pixel light emitting unit, or the blue sub-pixel light emitting unit, or may be performed on at least two of them.
In a further embodiment, the preset parameters of the sub-pixel light emitting unit 110 include the size of the sub-pixel light emitting unit 110 and/or the parameters of the light emitting material in the sub-pixel light emitting unit 110, and the target parameter values of the sub-pixel light emitting unit 110 are specific size values of the sub-pixel light emitting unit 110 and/or composition component values of the light emitting material in the sub-pixel light emitting unit 110. The size value of the sub-pixel light emitting unit 110 and the composition value of the light emitting material may affect the light emitting display brightness of the sub-pixel light emitting unit 110. For example, in the case where the light emitting material composition values are the same, the larger the size value of the sub-pixel light emitting unit 110 is, the brighter the light emitting display luminance is, and the smaller the size value of the sub-pixel light emitting unit 110 is, the darker the light emitting display luminance is. Under the condition of the same size value, the luminous display brightness of different luminescent material composition values can be different.
Referring to fig. 5 and 7, in a further embodiment, a pixel defining layer 130 is disposed around the sub-pixel light emitting unit 110, and the size of the sub-pixel light emitting unit 110 is defined by the size of the opening 131 of the pixel defining layer 130. The aforementioned step S220 of determining the target parameter value of the preset parameter according to the magnitude of the difference between the actual value of the light-emitting parameter of the target sub-pixel 200 and the standard value of the light-emitting parameter includes steps S221-ii, S222-ii and S223-ii. The specific steps are described in detail below.
In step S221-ii, the size compensation value of the sub-pixel light-emitting unit 110 is obtained according to the difference between the actual value of the light-emitting parameter of the target sub-pixel 200 and the standard value of the light-emitting parameter. That is, the preset parameter in the embodiment is the size of the sub-pixel light emitting unit, and the light emitting display brightness is adjusted by adjusting the size value.
In step S222-II, an area compensation value of the opening 131 of the pixel definition layer 130 is obtained according to the size compensation value of the sub-pixel light emitting unit 110. It is understood that, in the process of defining the size of the sub-pixel light emitting unit 110 by the pixel defining layer 130, the opening 131 is formed in the pixel defining layer 130, and then the sub-pixel light emitting unit 110 is formed in the opening 131. As shown in fig. 7, the pixel defining layer 130 is disposed on the surface of the base layer 140 in the display panel 10, an opening 131 is formed by notching the pixel defining layer 130, and then the sub-pixel light emitting unit 110 is formed in the opening 131. The size of the opening 131 of the pixel defining layer 130 determines the size of the sub-pixel light emitting unit 110. Therefore, in this step, it is necessary to obtain an area compensation value of the opening 131 of the pixel defining layer 130 according to the size compensation value of the sub-pixel light emitting unit 110.
In step S223-ii, the target area of the pixel definition layer 130 on the peripheral side of the sub-pixel light emitting unit 110 is determined according to the area compensation value of the opening 131 of the pixel definition layer 130 to obtain the target area of the pixel definition layer 130 as the target parameter value. After obtaining the area compensation value of the opening 131 of the pixel definition layer 130, the target area of the pixel definition layer 130, that is, the actual area of the pixel definition layer 130 after being grooved, is determined.
In a further embodiment, the preset parameter of the driving thin film transistor 120 includes a size of the driving thin film transistor 120 or a material parameter of the driving thin film transistor 120, and the target parameter value of the driving thin film transistor 120 is a specific size value of the driving thin film transistor 120 and/or a composition component value of a material in the driving thin film transistor 120. The specific size values of the driving thin film transistor 120 and/or the composition component values of the materials in the driving thin film transistor 120 may affect the luminance of the light emitting display of the sub-pixel light emitting unit 110. The driving tfts 120 with different size values have an influence on the light emitting parameters of the sub-pixel light emitting unit 120 during the operation of the sub-pixel 100, such as the light emitting current of the sub-pixel light emitting unit 120, and further the light emitting display brightness. The driving thin film transistor 120 has different material composition values, and the influence on the light emitting parameters of the sub-pixel light emitting unit 120 is different when the driving thin film transistor operates, so that the light emitting display brightness is influenced.
In a further embodiment, the driving thin film transistor 120 includes a gate electrode, a source electrode, a drain electrode and an active layer, the size of the driving thin film transistor 120 includes at least one of the size of the gate electrode, the size of the source electrode, the size of the drain electrode and the size of the active layer, and the material parameter of the driving thin film transistor 120 includes at least one of the material parameter of the gate electrode, the material parameter of the source electrode, the material parameter of the drain electrode and the material parameter of the active layer. That is, the variation of the dimension or material parameter of any of the above structures in the driving tft 120 affects the luminance of the sub-pixel light-emitting unit 110 connected thereto.
Referring to fig. 6, the present invention further provides a display panel 10, in which the display panel 10 includes a plurality of sub-pixels 110, and all the sub-pixels 110 include target sub-pixels 200 whose light-emitting brightness needs to be adjusted. The target parameter value of the preset parameter of the target sub-pixel 200 is set according to the difference between the actual value of the light-emitting parameter of the corresponding target sub-pixel 200 and the standard value of the light-emitting parameter, so that the light-emitting luminance of each sub-pixel 100 reaches the preset luminance value.
The display panel 10 of the present invention sets the target parameter value of the preset parameter of the target sub-pixel 200, so that the display panel 10 can emit light more uniformly.
In a further embodiment, the sub-pixel 100 comprises a sub-pixel light emitting unit 110 and a driving thin film transistor 120, the driving thin film transistor 120 is connected to an anode voltage U, and the anode voltage U drives the sub-pixel light emitting unit 110 to emit light through the driving thin film transistor 120. The preset parameters of the sub-pixel 100 include at least one of preset parameters of the sub-pixel light emitting unit 110 or preset parameters of the driving thin film transistor 120. It is understood that the sub-pixel light emitting unit 110 may be one of a red sub-pixel light emitting unit, a green sub-pixel light emitting unit, or a blue sub-pixel light emitting unit. It is understood that, in the present invention, the display panel 10 may perform the brightness compensation only for one of the red sub-pixel light emitting unit, the green sub-pixel light emitting unit, or the blue sub-pixel light emitting unit, or may perform the brightness compensation for at least two of the red sub-pixel light emitting unit, the green sub-pixel light emitting unit, or the blue sub-pixel light emitting unit.
In a further embodiment, the preset parameters of the sub-pixel light emitting unit 110 include the size of the sub-pixel light emitting unit 110 and/or the parameters of the light emitting material in the sub-pixel light emitting unit 110, and the target parameter values of the sub-pixel light emitting unit 110 are specific size values of the sub-pixel light emitting unit 110 and/or composition component values of the light emitting material in the sub-pixel light emitting unit 110.
Referring to fig. 7, in a further embodiment, a pixel defining layer 130 is disposed around the sub-pixel light emitting unit 110, and the size of the sub-pixel light emitting unit 110 is defined by the pixel defining layer 130.
In a further embodiment, the preset parameter of the driving thin film transistor 120 includes a size of the driving thin film transistor 120 and/or a material parameter of the driving thin film transistor 120, and the target parameter value of the driving thin film transistor 120 is a specific size value of the driving thin film transistor 120 and/or a composition component value of a material in the driving thin film transistor 120.
Referring to fig. 8, the present invention further provides a display device 20, wherein the display device 20 includes the display panel 10 according to any one of the above embodiments. The display device 20 may be a television, a robot, an aeronautical instrument, a smart Phone (such as an Android Phone, an iOS Phone, a Windows Phone, etc.), a tablet computer, a flexible palm computer, a flexible notebook computer, a Mobile Internet device (MID, Mobile Internet Devices), or a wearable device, or may be an Organic Light-Emitting Diode (OLED) display device, an Active Matrix Organic Light Emitting Diode (AMOLED) display device.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (16)
- A preparation method of a display panel is characterized by comprising the following steps:determining a target sub-pixel of which the light emitting brightness needs to be adjusted in all sub-pixels of the display panel;determining a target parameter value of a preset parameter of a target sub-pixel;and forming a target sub-pixel with the target parameter value to compensate the brightness of the target sub-pixel so that the light-emitting brightness values of all sub-pixels are preset brightness values.
- The manufacturing method according to claim 1, wherein the determining the target sub-pixel whose light emission luminance is to be adjusted among all the sub-pixels of the display panel includes:obtaining a standard value of a light-emitting parameter of each sub-pixel in the display panel;acquiring an actual value of a light-emitting parameter of each sub-pixel in a display panel;and determining the sub-pixel of which the difference value between the actual value of the light-emitting parameter and the standard value of the light-emitting parameter exceeds a preset threshold value as a target sub-pixel of which the light-emitting brightness needs to be adjusted.
- The method according to claim 2, wherein the determining the target parameter value of the preset parameter of the target subpixel comprises:determining a preset parameter of the target sub-pixel, wherein the preset parameter has a compensation effect on a difference value between an actual value of the light-emitting parameter and a standard value of the light-emitting parameter;and obtaining a target parameter value of the preset parameter according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter.
- The method according to claim 3, wherein said obtaining the target parameter value of the preset parameter according to the difference between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter comprises:determining a compensation parameter value of the preset parameter according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter;and obtaining a target parameter value of the preset parameter according to the standard parameter value and the compensation parameter value of the preset parameter.
- The production method according to claim 2, wherein the light-emitting parameter includes at least one of light-emitting brightness, light-emitting voltage, and light-emitting current.
- The method according to claim 3, wherein the sub-pixel comprises a sub-pixel light emitting unit and a driving thin film transistor, the driving thin film transistor is connected with an anode voltage, and the anode voltage drives the sub-pixel light emitting unit to emit light through the driving thin film transistor; the preset parameters of the sub-pixels comprise at least one of preset parameters of the sub-pixel light emitting units or preset parameters of the driving thin film transistors.
- The method according to claim 6, wherein the predetermined parameters of the sub-pixel light-emitting unit include a size of the sub-pixel light-emitting unit and/or a parameter of a light-emitting material in the sub-pixel light-emitting unit, and the target parameter value of the sub-pixel light-emitting unit is a specific size value of the sub-pixel light-emitting unit and/or a composition value of the light-emitting material in the sub-pixel light-emitting unit.
- The manufacturing method according to claim 7, wherein a pixel defining layer is provided on a peripheral side of the sub-pixel light emitting unit, and a size of the sub-pixel light emitting unit is defined by a size of an opening of the pixel defining layer; the step of determining the target parameter value of the preset parameter according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter includes:obtaining a size compensation value of the sub-pixel light-emitting unit according to the difference value between the actual value of the light-emitting parameter of the target sub-pixel and the standard value of the light-emitting parameter;obtaining an area compensation value of an opening of a pixel definition layer according to the size compensation value of the sub-pixel light-emitting unit;determining the area of the pixel definition layer on the peripheral side of the sub-pixel light emitting unit according to the area compensation value of the pixel definition layer to obtain a target area of the pixel definition layer as the target parameter value.
- The manufacturing method according to claim 6, wherein the preset parameter of the driving thin film transistor comprises a size of the driving thin film transistor or a material parameter of the driving thin film transistor, and the target parameter value of the driving thin film transistor is a specific size value of the driving thin film transistor and/or a composition component value of a material in the driving thin film transistor.
- The method according to claim 9, wherein the driving thin film transistor comprises a gate electrode, a source electrode, a drain electrode and an active layer, and the size of the driving thin film transistor comprises at least one of the size of the gate electrode, the size of the source electrode, the size of the drain electrode and the size of the active layer; the material parameters of the driving thin film transistor comprise at least one of the material parameters of a grid electrode, a source electrode, a drain electrode and an active layer.
- The display panel is characterized by comprising a plurality of sub-pixels, wherein all the sub-pixels comprise target sub-pixels of which the light emitting brightness needs to be adjusted; and setting a target parameter value of the preset parameter of the target sub-pixel according to a difference value between the actual value of the light-emitting parameter of the corresponding target sub-pixel and the standard value of the light-emitting parameter, so that the light-emitting brightness of each sub-pixel reaches a preset brightness value.
- The display panel of claim 11, wherein the sub-pixel comprises a sub-pixel light emitting unit and a driving thin film transistor, the driving thin film transistor is connected with an anode voltage, and the anode voltage drives the sub-pixel light emitting unit to emit light through the driving thin film transistor; the preset parameters of the sub-pixel comprise at least one of preset parameters of the sub-pixel light emitting unit or preset parameters of the driving thin film transistor.
- The display panel according to claim 12, wherein the preset parameters of the sub-pixel light emitting unit comprise a size of the sub-pixel light emitting unit and/or a light emitting material parameter in the sub-pixel light emitting unit, and the target parameter value of the sub-pixel light emitting unit is a specific size value of the sub-pixel light emitting unit and/or a composition component value of the light emitting material in the sub-pixel light emitting unit.
- The display panel according to claim 13, wherein a peripheral side of the sub-pixel light emitting unit is provided with a pixel defining layer, and a size of the sub-pixel light emitting unit is defined by the pixel defining layer.
- The display panel according to claim 12, wherein the predetermined parameter of the driving thin film transistor comprises a size of the driving thin film transistor and/or a material parameter of the driving thin film transistor, and the target parameter value of the driving thin film transistor is a specific size value of the driving thin film transistor and/or a composition component value of a material in the driving thin film transistor.
- A display device characterized in that the display device comprises a display panel according to any one of claims 11 to 15.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/123103 WO2020132807A1 (en) | 2018-12-24 | 2018-12-24 | Display panel, preparation method therefor, and display apparatus |
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| CN112689868A true CN112689868A (en) | 2021-04-20 |
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| WO (1) | WO2020132807A1 (en) |
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| WO2023216321A1 (en) * | 2022-05-13 | 2023-11-16 | 深圳市华星光电半导体显示技术有限公司 | Brightness compensation method and apparatus, and readable storage medium and display apparatus |
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