CN115294908A - Display panel adjusting device and method - Google Patents

Display panel adjusting device and method Download PDF

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Publication number
CN115294908A
CN115294908A CN202210938741.9A CN202210938741A CN115294908A CN 115294908 A CN115294908 A CN 115294908A CN 202210938741 A CN202210938741 A CN 202210938741A CN 115294908 A CN115294908 A CN 115294908A
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CN
China
Prior art keywords
pixel
sub
unit
pixels
abnormal
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Pending
Application number
CN202210938741.9A
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Chinese (zh)
Inventor
谢吉华
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.)
Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to CN202210938741.9A priority Critical patent/CN115294908A/en
Publication of CN115294908A publication Critical patent/CN115294908A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

Abstract

The invention discloses a display panel adjusting device and method. In the display panel adjusting device, an imaging unit is positioned on one side of a light-emitting surface of a display panel to be detected and is used for focusing each sub-pixel of the display panel to form a sub-pixel image; the photosensitive unit is positioned on one side of the light emitting surface of the imaging unit and used for receiving the sub-pixel image and obtaining sub-pixel display information of the sub-pixels according to the sub-pixel image; the processing unit is used for determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and obtaining adjustment information corresponding to the abnormal pixels; the adjusting unit is used for adjusting the pixel current of the abnormal pixel according to the adjusting information so as to enable the display condition of the abnormal pixel to be normal. Therefore, the invention can screen out the abnormal pixels in the sub-pixels and correct the display condition of the abnormal pixels, so that the difference of the display conditions of all the sub-pixels is reduced, and the consistency of the brightness and the color of the sub-pixels is improved.

Description

Display panel adjusting device and method
Technical Field
The invention relates to the technical field of display, in particular to a display panel adjusting device and method.
Background
Each pixel unit a on the display panel generally includes three sub-pixels of RGB (red, green and blue). Because of the large number of sub-pixels on the display panel, it is difficult to ensure that the display conditions such as brightness and color of all sub-pixels can be kept high. Poor uniformity of the sub-pixel brightness and color can result in poor display effect of the display panel.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide a display panel adjusting apparatus and method, which can improve the uniformity of the display status of the sub-pixels of the display panel.
To achieve the above object, the present invention provides a display panel adjustment apparatus, comprising:
the imaging unit is positioned on one side of the light emitting surface of the display panel to be detected and used for focusing each sub-pixel of the display panel to form a sub-pixel image;
the photosensitive unit is positioned on one side of the light emitting surface of the imaging unit and used for receiving the sub-pixel image and obtaining sub-pixel display information of the sub-pixels according to the sub-pixel image;
the processing unit is used for determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and obtaining adjustment information corresponding to the abnormal pixels;
and the adjusting unit is used for adjusting the pixel current of the abnormal pixel according to the adjusting information so as to enable the display condition of the abnormal pixel to be normal.
Optionally, the processing unit further comprises a determining unit and an obtaining unit;
the determining unit is used for determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and the set standard display information;
and the obtaining unit is used for obtaining the adjustment information corresponding to the abnormal pixel according to the difference between the display information of the abnormal pixel and the standard display information.
Optionally, the photosensitive unit includes a plurality of photosensitive pixels, and each sub-pixel is focused to be imaged on one photosensitive pixel by the imaging unit.
Optionally, the light sensing unit comprises a charge coupling unit for converting the received optical signals from the sub-pixels into electrical signals and converting the electrical signals into digital signals.
Optionally, the device further comprises a storage unit for storing the adjustment information, and the storage unit is electrically connected with the processing unit and the adjustment unit at the same time.
The invention also provides a display panel adjusting method, which is used for a processing unit of the display panel adjusting device, the display panel adjusting device also comprises an imaging unit, a photosensitive unit and an adjusting unit, and the method comprises the following steps:
acquiring sub-pixel display information of each sub-pixel of a display panel to be detected, wherein the sub-pixel display information is obtained by a photosensitive unit according to a sub-pixel image, and the sub-pixel image is formed by focusing the sub-pixel on the photosensitive unit by an imaging unit;
determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information, and obtaining adjustment information corresponding to the abnormal pixels;
and transmitting the adjustment information to the adjustment unit, so that the adjustment unit adjusts the pixel current of the abnormal pixel according to the adjustment information, and the display condition of the abnormal pixel becomes normal.
Optionally, the step of determining an abnormal pixel with abnormal display from the sub-pixels according to the sub-pixel display information, and obtaining adjustment information corresponding to the abnormal pixel further includes:
according to the sub-pixel display information and the set standard display information, determining abnormal pixels with abnormal display from the sub-pixels;
and obtaining the adjustment information corresponding to the abnormal pixel according to the difference between the display information of the abnormal pixel and the standard display information.
Optionally, the photosensitive unit includes a plurality of photosensitive pixels, and each sub-pixel is focused to be imaged on one photosensitive pixel by the imaging unit.
Optionally, the step of obtaining sub-pixel display information of each sub-pixel of the display panel to be detected further includes:
and acquiring sub-pixel display information of each sub-pixel of the display panel to be detected under the maximum brightness condition, wherein the sub-pixel display information comprises brightness information and color information of each sub-pixel.
Optionally, the display panel adjusting apparatus further includes a storage unit, the step of transmitting the adjustment information to the adjusting unit further includes:
and storing the adjustment information into the storage unit so that the adjustment unit acquires the adjustment information from the storage unit.
Compared with the prior art, the invention has the beneficial effects that: the imaging unit is positioned on one side of a light emitting surface of a display panel to be detected and used for focusing each sub-pixel of the display panel to form a sub-pixel image; the photosensitive unit is positioned on one side of the light emitting surface of the imaging unit and used for receiving the sub-pixel image and obtaining sub-pixel display information of the sub-pixels according to the sub-pixel image; the processing unit is used for determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and obtaining adjustment information corresponding to the abnormal pixels; the adjusting unit is used for adjusting the pixel current of the abnormal pixel according to the adjusting information so as to enable the display condition of the abnormal pixel to become normal. Therefore, the invention can screen out the abnormal pixels in the sub-pixels and correct the display condition of the abnormal pixels, so that the difference of the display conditions of all the sub-pixels is reduced, and the consistency of the brightness and the color of the sub-pixels is improved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a diagram of a display panel adjusting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating adjustment of pixel display conditions according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating adjustment of a display condition of a pixel unit according to an embodiment of the present invention;
FIG. 4 is an architecture diagram of a processing unit according to an embodiment of the present invention;
FIG. 5 is a first flowchart illustrating a method for adjusting a display panel according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method for adjusting a display panel according to a second embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced module or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
An embodiment of the present invention provides a display panel adjustment apparatus, as shown in fig. 1, including an imaging unit 110, a photosensitive unit 120, a processing unit 130, and an adjustment unit 140; wherein:
the imaging unit 110 is located on one side of a light emitting surface of the display panel 300 to be detected, and is configured to focus each sub-pixel P of the display panel 300 to form a sub-pixel image;
the photosensitive unit 120 is located on a light emitting surface side of the imaging unit 110, and is configured to receive the sub-pixel image and obtain sub-pixel display information of the sub-pixel P according to the sub-pixel image;
the processing unit 130 is configured to determine an abnormal pixel P1 with abnormal display from the sub-pixels P according to the sub-pixel display information, and obtain adjustment information corresponding to the abnormal pixel P1;
the adjusting unit 140 is configured to adjust the pixel current of the abnormal pixel P1 according to the adjustment information, so that the display condition of the abnormal pixel P1 becomes normal.
In this embodiment, the overall brightness of the display panel 300 to be detected is adjusted to the maximum brightness. The subpixel P includes a red subpixel R, a green subpixel G, and a blue subpixel B. The sub-pixel display information includes the brightness and color of the sub-pixel P, and the abnormal pixel P1 includes the sub-pixel P having the brightness or/and color different from those of the other pixels. The adjustment information includes data for adjusting the pixel current, and the brightness and color of the abnormal pixel P1 can be adjusted to be consistent with or close to those of the other sub-pixels P by adjusting the magnitude of the pixel current on the abnormal pixel P1.
As shown in fig. 2, if the luminance of the sub-pixel P is lower than a desired value (the sub-pixel P is determined as an abnormal pixel P1 by the processing unit 130), the pixel current of the sub-pixel P may be increased by the adjusting unit 140. As shown in fig. 3, if the color shift of the pixel unit a exceeds a desired value, the pixel current of the sub-pixel P of the pixel unit a can be individually adjusted. The pixel current of the abnormal pixel P1 of the pixel unit a is adjusted to satisfy that the brightness and the color of one pixel unit a are both at an appropriate value.
The display panel adjusting device of this embodiment can screen out the abnormal pixels P1 in the sub-pixels P, and correct the display condition of the abnormal pixels P1, so that the differences of the display conditions of all the sub-pixels P are reduced, and the consistency of the brightness and the color of the sub-pixels P is improved.
In one embodiment, the adjusting unit 140 includes a TCON (Timing Control chip), the TOCN is located on a driving board, and the driving board is electrically connected to the display panel 300 to be detected. The pixel current of the sub-pixel P is adjusted by TCON.
In one embodiment, the imaging unit 110 includes a lens located on the light-emitting surface side of the display panel 300 to be inspected, and a focusing member for adjusting the distance between the lens and the photosensitive unit 120 so that the imaging focus of the lens is located on the photosensitive unit 120.
In one embodiment, as shown in fig. 4, the processing unit 130 further includes a determining unit 131 and an obtaining unit 132;
a determining unit 131, configured to determine an abnormal pixel P1 with abnormal display from the sub-pixels P according to the sub-pixel display information and the set standard display information;
a obtaining unit 132, configured to obtain adjustment information corresponding to the abnormal pixel P1 according to a difference between the display information of the abnormal pixel P1 and the standard display information.
In one embodiment, the light sensing unit 120 includes a plurality of light sensing pixels 121, and each sub-pixel P is focused to be imaged on one light sensing pixel 121 by the imaging unit 110. The number of the photosensitive pixels 121 is greater than or equal to the number of the sub-pixels P, so that it is ensured that the optical signal of each sub-pixel P can be collected by the photosensitive unit 120 to obtain sub-pixel display information of all the sub-pixels P. In this embodiment, the sub-pixels P and the photosensitive pixels 121 may correspond to each other one by one.
In one embodiment, the light sensing unit 120 includes a Charge Coupled Device (CCD) for converting the received optical signal from the sub-pixel P into an electrical signal and converting the electrical signal into a digital signal. The CCD can convert light into electric charge, store and transfer the electric charge, and can take out the stored electric charge to change the voltage, and has the characteristics of small volume, light weight, no influence of magnetic field, and vibration and impact resistance.
In one embodiment, the display panel adjusting apparatus further includes a storage unit 150 for storing the adjustment information, and the storage unit 150 is electrically connected to both the processing unit 130 and the adjusting unit 140. The processing unit 130 stores the adjustment information in the storage unit 150, and the adjustment unit 140 acquires the adjustment information from the storage unit 150. Meanwhile, the adjusted maximum current information of each sub-pixel P is stored in the storage unit 150. The subsequent display calls for the adjusted maximum current to display the maximum brightness.
An embodiment of the present invention provides a display panel adjusting method, which is used in the processing unit 130 of the display panel adjusting apparatus provided in the foregoing embodiment, the display panel adjusting apparatus further includes an imaging unit 110, a photosensitive unit 120, and an adjusting unit 140, as shown in fig. 5, the method includes the following steps:
step 210, obtaining sub-pixel display information of each sub-pixel P of the display panel 300 to be detected, where the sub-pixel display information is obtained by the photosensitive unit 120 according to a sub-pixel image, and the sub-pixel image is formed by the imaging unit 110 focusing the sub-pixel P on the photosensitive unit 120;
step 220, according to the sub-pixel display information, determining an abnormal pixel P1 with abnormal display from the sub-pixel P, and obtaining adjustment information corresponding to the abnormal pixel P1;
step 230, transmitting the adjustment information to the adjustment unit 140, so that the adjustment unit 140 adjusts the pixel current of the abnormal pixel P1 according to the adjustment information, and the display status of the abnormal pixel P1 becomes normal.
In this embodiment, the overall brightness of the display panel 300 to be detected is adjusted to the maximum brightness. The subpixel P includes a red subpixel R, a green subpixel G, and a blue subpixel B. The sub-pixel display information includes the brightness and color of the sub-pixel P, and the abnormal pixel P1 includes the sub-pixel P having the brightness or/and color different from those of the other pixels. The adjustment information includes data for adjusting the pixel current, and the brightness and color of the abnormal pixel P1 can be adjusted to be consistent with or close to those of the other sub-pixels P by adjusting the magnitude of the pixel current on the abnormal pixel P1.
By adopting the method, the abnormal pixel P1 in the sub-pixel P can be screened out, and the display condition of the abnormal pixel P1 is corrected, so that the difference of the display condition of all the sub-pixels P is reduced, and the consistency of the brightness and the color of the sub-pixels P is improved.
In one embodiment, as shown in fig. 6, the step of determining an abnormal pixel P1 with abnormal display from the sub-pixels P according to the sub-pixel display information, and obtaining the adjustment information corresponding to the abnormal pixel P1 further includes:
step 221, determining an abnormal pixel P1 with abnormal display from the sub-pixels P according to the sub-pixel display information and the set standard display information;
in step 222, the adjustment information corresponding to the abnormal pixel P1 is obtained according to the difference between the display information of the abnormal pixel P1 and the standard display information.
In one embodiment, the light sensing unit 120 includes a plurality of light sensing pixels 121, and each sub-pixel P is focused to be imaged on one light sensing pixel 121 by the imaging unit 110. The number of the photosensitive pixels 121 is greater than or equal to the number of the sub-pixels P, so that it is ensured that the optical signal of each sub-pixel P can be collected by the photosensitive unit 120 to obtain the sub-pixel display information of all the sub-pixels P. In this embodiment, the sub-pixels P and the photosensitive pixels 121 may correspond to each other one by one.
Specifically, the light sensing unit 120 includes a Charge Coupled Device (CCD) for converting an optical signal received from the sub-pixel P into an electrical signal and converting the electrical signal into a digital signal. The CCD can change light into charges and store and transfer the charges, and can also take out the stored charges to change the voltage, and the CCD has the characteristics of small volume, light weight, no influence of a magnetic field and vibration and impact resistance.
In one embodiment, the step of obtaining the sub-pixel display information of each sub-pixel P of the display panel 300 to be detected further includes:
the sub-pixel display information of each sub-pixel P of the display panel 300 to be detected with the maximum brightness condition is obtained, and the sub-pixel display information includes the brightness information and the color information of each sub-pixel P.
In one embodiment, the display panel adjusting apparatus further includes a storage unit 150, the step of transmitting the adjustment information to the adjusting unit 140 further includes:
the adjustment information is stored in the storage unit 150, so that the adjustment unit 140 acquires the adjustment information from the storage unit 150.
Specifically, the processing unit 130 stores the adjustment information in the storage unit 150, and the adjustment unit 140 acquires the adjustment information from the storage unit 150. Meanwhile, the adjusted maximum current information of each sub-pixel P is stored in the storage unit 150. The subsequent display calls for the adjusted maximum current to display the maximum brightness.
In an embodiment, the steps 210, 220 and 230 may be further repeated to determine whether the brightness and the color of the corrected display panel 300 meet the standard, and the color and the brightness are continuously adjusted to further improve the uniformity of the brightness and the color of the sub-pixel P.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A display panel adjustment apparatus, comprising:
the imaging unit is positioned on one side of a light-emitting surface of the display panel to be detected and used for focusing each sub-pixel of the display panel to form a sub-pixel image;
the photosensitive unit is positioned on one side of the light emitting surface of the imaging unit and used for receiving the sub-pixel image and obtaining sub-pixel display information of the sub-pixel according to the sub-pixel image;
the processing unit is used for determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and obtaining adjustment information corresponding to the abnormal pixels;
and the adjusting unit is used for adjusting the pixel current of the abnormal pixel according to the adjusting information so as to enable the display condition of the abnormal pixel to be normal.
2. The display panel adjustment apparatus according to claim 1, wherein the processing unit further includes a determination unit and a deriving unit;
the determining unit is used for determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and the set standard display information;
the obtaining unit is configured to obtain adjustment information corresponding to the abnormal pixel according to a difference between the display information of the abnormal pixel and the standard display information.
3. The apparatus according to claim 1, wherein the photosensitive unit comprises a plurality of photosensitive pixels, and each of the sub-pixels is focused and imaged on one of the photosensitive pixels by the imaging unit.
4. The device of claim 1, wherein the light sensing unit comprises a charge coupling unit, and the charge coupling unit is configured to convert the received optical signals from the sub-pixels into electrical signals and convert the electrical signals into digital signals.
5. The display panel adjustment apparatus according to any one of claims 1 to 4, further comprising a storage unit for storing the adjustment information, the storage unit being electrically connected to both the processing unit and the adjustment unit.
6. A display panel adjustment method, characterized by a processing unit for a display panel adjustment apparatus further including an imaging unit, a photosensitive unit, and an adjustment unit, the method comprising:
acquiring sub-pixel display information of each sub-pixel of a display panel to be detected, wherein the sub-pixel display information is obtained by the photosensitive unit according to a sub-pixel image, and the sub-pixel image is formed by focusing the sub-pixel on the photosensitive unit by the imaging unit;
determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information, and obtaining adjustment information corresponding to the abnormal pixels;
and transmitting the adjustment information to the adjustment unit, so that the adjustment unit adjusts the pixel current of the abnormal pixel according to the adjustment information, and the display condition of the abnormal pixel is changed to be normal.
7. The method for adjusting a display panel according to claim 6, wherein the step of determining an abnormal pixel that is abnormally displayed from the sub-pixels according to the sub-pixel display information and obtaining adjustment information corresponding to the abnormal pixel further comprises:
determining abnormal pixels with abnormal display from the sub-pixels according to the sub-pixel display information and set standard display information;
and obtaining the adjustment information corresponding to the abnormal pixel according to the difference between the display information of the abnormal pixel and the standard display information.
8. The method according to claim 6, wherein the photosensitive unit comprises a plurality of photosensitive pixels, and each of the sub-pixels is focused and imaged on one of the photosensitive pixels by the imaging unit.
9. The method according to claim 6, wherein the step of obtaining sub-pixel display information of each sub-pixel of the display panel to be detected further comprises:
obtaining sub-pixel display information of each sub-pixel of a display panel to be detected under the maximum brightness condition, wherein the sub-pixel display information comprises brightness information and color information of each sub-pixel.
10. The display panel adjustment method according to claim 6, wherein the display panel adjustment apparatus further comprises a storage unit, the step of transmitting the adjustment information to the adjustment unit further comprises:
and storing the adjustment information in the storage unit so that the adjustment unit acquires the adjustment information from the storage unit.
CN202210938741.9A 2022-08-05 2022-08-05 Display panel adjusting device and method Pending CN115294908A (en)

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Application Number Priority Date Filing Date Title
CN202210938741.9A CN115294908A (en) 2022-08-05 2022-08-05 Display panel adjusting device and method

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CN115294908A true CN115294908A (en) 2022-11-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116504169A (en) * 2023-06-27 2023-07-28 联士光电（深圳）有限公司 Display apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116504169A (en) * 2023-06-27 2023-07-28 联士光电（深圳）有限公司 Display apparatus
CN116504169B (en) * 2023-06-27 2023-09-08 联士光电（深圳）有限公司 Display apparatus

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