Display panel, display device, manufacturing method, and brightness compensation method

Abstract

The present invention provides a display panel, a display device, a manufacturing method, and a brightness compensation method. The display panel comprises: a substrate; a plurality of light-emitting units provided on the substrate; a plurality of photoelectric sensors provided on the sides of the light-emitting units distant from the substrate, wherein the photoelectric sensors are used for receiving light emitted by the corresponding light-emitting units, and converting the received light into first electric signals; and signal lines connected to the photoelectric sensors and used for transmitting the first electric signals. In the present invention, photoelectric sensors are arranged in a display panel, and the photoelectric sensors are used for receiving light emitted by corresponding light-emitting units, and converting the received light into electric signals. In other words, the photoelectric sensors can be used to monitor the brightness of the light-emitting units in real time, thereby enabling dynamic brightness compensation for the light-emitting units, prolonging the service life of the color and brightness of the display panel and improving the stability and durability of a display effect.

Description

Display panel, display device, manufacturing method and brightness compensation method

[0001] Cross-reference to related applications

[0002] The present application claims priority to Chinese Patent Application No. 202411129379.6, filed on August 16, 2024, the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] Embodiments of the present application relate to the technical field of display, in particular to a display panel, a display device, a manufacturing method and a brightness compensation method. BACKGROUND

[0004] Active-Matrix Organic Light-Emitting Diode (AM-OLED) as a new generation of display technology, has great application potential. OLED display device with its self-luminous characteristics, shows low driving voltage, high luminous efficiency, fast response time, excellent clarity and contrast, wide viewing angle of nearly 180°, wide temperature range, and unique transparent preparation ability. These outstanding advantages enable OLED technology to realize innovative flexible display and large-area full-color display, setting a new benchmark for modern display technology. However, the problem of gradual reduction of pixel brightness of OLED display device with use time has always been a key factor affecting user experience and screen life. OLED display device needs brightness compensation to maintain effect. SUMMARY

[0005] Embodiments of the present application provide a display panel, a display device, a manufacturing method and a brightness compensation method, which are used to solve the problem of how to accurately compensate the brightness of OLED display device.

[0006] In order to solve the above technical problems, the present application is implemented as follows:

[0007] In a first aspect, embodiments of the present application provide a display panel, comprising:

[0008] a substrate substrate;

[0009] a plurality of light emitting units arranged on the substrate substrate;

[0010] a plurality of photoelectric sensors arranged on the side of the light emitting units away from the substrate substrate, the photoelectric sensors being configured to receive light emitted by the corresponding light emitting units and convert the received light into first electrical signals;

[0011] A signal line connected with the photoelectric sensor and used for transmitting the first electrical signal.

[0012] Optionally, a projection of the photoelectric sensor on the substrate substrate does not overlap with a projection of the effective light emitting area of the light emitting unit on the substrate substrate.

[0013] Alternatively, a projection of the photoelectric sensor on the substrate substrate overlaps with a projection of the effective light emitting area of the light emitting unit on the substrate substrate.

[0014] Optionally, the display panel further comprises:

[0015] A color filter layer disposed on a side of the light emitting unit away from the substrate substrate, the color filter layer comprising a plurality of color filters;

[0016] A light shielding layer comprising a light shielding portion and a plurality of openings, the plurality of openings corresponding one-to-one to the plurality of light emitting units and corresponding one-to-one to the plurality of color filters, and used for transmitting light emitted by the corresponding light emitting unit;

[0017] The photoelectric sensor is disposed on a side of the light shielding layer close to the substrate substrate, and a projection of the photoelectric sensor on the substrate substrate is located within a projection area of the light shielding portion on the substrate substrate.

[0018] Alternatively, a projection of the photoelectric sensor on the substrate substrate overlaps with a projection of the opening on the substrate substrate.

[0019] Optionally, the photoelectric sensor comprises a first electrode, a second electrode, and a photoelectric sensor functional layer between the first electrode and the second electrode.

[0020] Optionally, the signal line comprises a plurality of first signal lines and a plurality of second signal lines, the first electrode is connected with the first signal line, and the second electrode is connected with the second signal line.

[0021] Optionally, the plurality of first signal lines are arranged in a row manner, and the plurality of second signal lines are arranged in a column manner.

[0022] The plurality of photoelectric sensors are arranged in a row-column manner, the photoelectric sensors in the same row are connected with the same first signal line, and the photoelectric sensors in the same column are connected with the same second signal line.

[0023] Optionally, the plurality of light emitting units correspond one-to-one to the plurality of photoelectric sensors.

[0024] Alternatively,

[0025] The plurality of light emitting units comprises a plurality of light emitting units of different colors.

[0026] The at least two adjacent light emitting units of the same color correspond to the same photoelectric sensor.

[0027] In a second aspect, an embodiment of the present application provides a display device, comprising a display panel and a control circuit connected to the display panel, the display panel being the display panel of the first aspect, and the control circuit being configured to receive a first electrical signal transmitted by a photoelectric sensor of the display panel, and perform brightness compensation on a light emitting unit corresponding to the photoelectric sensor according to the first electrical signal.

[0028] In a third aspect, an embodiment of the present application provides a manufacturing method of a display panel, comprising:

[0029] providing a substrate;

[0030] forming a plurality of light emitting units on the substrate;

[0031] forming a plurality of photoelectric sensors and signal lines on a side of the light emitting units away from the substrate, the photoelectric sensors being configured to receive light emitted by corresponding light emitting units and convert the received light into first electrical signals, and the signal lines being connected to the photoelectric sensors and configured to transmit the first electrical signals.

[0032] In a fourth aspect, an embodiment of the present application provides a brightness compensation method of a display panel, the display panel being the display panel of the first aspect, and the brightness compensation method comprising:

[0033] receiving a first electrical signal transmitted by a photoelectric sensor of the display panel;

[0034] performing brightness compensation on a light emitting unit corresponding to the photoelectric sensor according to the first electrical signal.

[0035] Optionally, the brightness compensation on the light emitting unit corresponding to the photoelectric sensor according to the first electrical signal comprises:

[0036] obtaining an image gray scale value of the light emitting unit corresponding to the photoelectric sensor, and reference brightness data corresponding to the image gray scale value stored in advance;

[0037] comparing brightness data corresponding to the first electrical signal of the photoelectric sensor with the reference brightness data;

[0038] if a difference between the brightness data corresponding to the first electrical signal of the photoelectric sensor and the reference brightness data is outside a preset range, generating brightness compensation data;

[0039] Send the luminance compensation data to the driving circuit corresponding to the light emitting unit.

[0040] Optionally, the luminance compensation method of the display panel further comprises:

[0041] If the difference between the luminance data corresponding to the first electric signal of the photoelectric sensor and the reference luminance data is within a preset range, it is determined whether the light emitting unit corresponding to the photoelectric sensor is color casted;

[0042] If the light emitting unit corresponding to the photoelectric sensor is color casted, white balance adjustment data is generated and sent to the driving circuit corresponding to the light emitting unit.

[0043] Optionally, before the luminance compensation of the light emitting unit corresponding to the photoelectric sensor according to the first electric signal, the method further comprises:

[0044] Obtaining a second electric signal transmitted by the photoelectric sensor when the light emitting unit of the display panel is not emitting light;

[0045] Signal filtering the first electric signal according to the second electric signal.

[0046] Optionally, the receiving the first electric signal transmitted by the photoelectric sensor of the display panel further comprises:

[0047] Obtaining the first electric signal output by the photoelectric sensor by row.

[0048] In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the luminance compensation method of the display panel according to the fourth aspect.

[0049] In a sixth aspect, a computer program product is provided, and the computer program product comprises computer instructions, and the computer instructions are executed by a processor to implement the steps of the luminance compensation method of the display panel according to the fourth aspect.

[0050] In the embodiment of the present application, the photoelectric sensor is built in the display panel, and the photoelectric sensor is used to receive the light emitted by the corresponding light emitting unit and convert the received light into an electric signal, that is, the luminance of the light emitting unit can be monitored in real time through the photoelectric sensor, so that the light emitting unit is dynamically and accurately compensated, the color and luminance life of the display panel is prolonged, and the stability and durability of the display effect are improved. BRIEF DESCRIPTION OF DRAWINGS

[0051] Various other advantages and benefits will become apparent to those of ordinary skill in the art, upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not intended to be a limitation on the scope of the application. Moreover, in the drawings, like reference numerals refer to similar components throughout the several views. In the drawings:

[0052] FIG. 1 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present application;

[0053] FIG. 2 is a flowchart of a method for compensating brightness of a display panel according to an embodiment of the present application;

[0054] FIG. 3 is a flowchart of a method for compensating brightness of a display panel according to an embodiment of the present application;

[0055] FIG. 4 is a flowchart of a method for compensating brightness of a display panel according to an embodiment of the present application;

[0056] FIG. 5 is a structural diagram of a display panel according to an embodiment of the present application;

[0057] FIG. 6 is a diagram of signal lines of a display panel according to an embodiment of the present application;

[0058] FIG. 7 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present application;

[0059] FIG. 8 is a structural diagram of a display panel according to an embodiment of the present application;

[0060] FIG. 9 is a diagram of signal lines of a display panel according to an embodiment of the present application;

[0061] FIG. 10 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present application;

[0062] FIG. 11 is a diagram of a sub-pixel arrangement of a display panel according to an embodiment of the present application;

[0063] FIG. 12 is a diagram of a brightness detection method of a sub-pixel of a display panel according to an embodiment of the present application;

[0064] FIG. 13 is a structural diagram of a display panel according to an embodiment of the present application;

[0065] FIG. 14 is a diagram of signal lines of a display panel according to an embodiment of the present application;

[0066] FIG. 15 is a diagram of the effect of a method for compensating brightness of a display panel according to an embodiment of the present application;

[0067] FIG. 16 is a diagram of the effect of a conventional method for compensating brightness of a display panel. DETAILED DESCRIPTION

[0068] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of the present application.

[0069] The display panel provided by the embodiments of the present application comprises:

[0070] a substrate substrate;

[0071] a plurality of light emitting units arranged on the substrate substrate;

[0072] a plurality of photoelectric sensors arranged on a side of the light emitting units away from the substrate substrate, the photoelectric sensors being configured to receive light emitted by the corresponding light emitting units and convert the received light into first electrical signals;

[0073] a signal line connected to the photoelectric sensors and configured to transmit the first electrical signals.

[0074] The substrate substrate can be a flexible substrate, such as a PI (polyimide) substrate substrate, or a rigid substrate, such as a glass substrate substrate, etc.

[0075] The light emitting units can also be referred to as sub-pixels, and can comprise an anode, a light emitting layer, and a cathode. The material of the anode can be metal, metal alloy, or ITO (indium tin oxide), etc. The cathode is a transparent electrode, and the material can be thin metal, ITO, etc. The light emitting layer can be an organic light emitting layer. The light emitting units emit light in a direction away from the substrate substrate. In some embodiments, the light emitting units can comprise red light emitting units, green light emitting units, and blue light emitting units. Of course, the present application is not limited thereto. In the embodiments of the present application, the plurality of light emitting units are arranged in a Real RGB manner, i.e., each pixel comprises three sub-pixels (light emitting units) of RGB. Of course, the plurality of light emitting units can also be arranged in other manners, such as a manner in which two adjacent pixels share one or more sub-pixels.

[0076] The photoelectric sensors are photoelectric conversion devices, and can convert the received light into electrical signals, so as to be used for real-time monitoring of the brightness of the light emitting units.

[0077] In the embodiment of the present application, the photoelectric sensor is built in the display panel, and is used to receive light emitted by the corresponding light emitting unit and convert the received light into an electrical signal, that is, the brightness of the light emitting unit can be monitored in real time through the photoelectric sensor, so that dynamic brightness compensation is performed on the light emitting unit, thereby prolonging the color and brightness life of the display panel and improving the stability and durability of the display effect.

[0078] In some embodiments, optionally, the orthographic projection of the photoelectric sensor on the substrate substrate does not overlap with the orthographic projection of the effective light emitting area of the light emitting unit on the substrate substrate, that is, the photoelectric sensor is not arranged opposite to the light emitting unit, but is arranged on the side of the light emitting unit, so that the brightness of the light emitting unit is monitored while the light transmittance of the light emitting unit is not affected.

[0079] In some embodiments, optionally, the orthographic projection of the photoelectric sensor on the substrate substrate has an overlapping area with the orthographic projection of the effective light emitting area of the light emitting unit on the substrate substrate, that is, the photoelectric sensor is arranged opposite to the light emitting unit, so that the monitored light brightness is more accurate.

[0080] Here, the effective light emitting area generally refers to the overlapping area of the anode, the light emitting layer and the cathode of the light emitting unit.

[0081] In some embodiments, optionally, the display panel further comprises:

[0082] A color film layer is arranged on the side of the light emitting unit away from the substrate substrate, and the color film layer comprises a plurality of color filters.

[0083] A light shielding layer comprises a light shielding portion and a plurality of openings, the plurality of openings correspond one-to-one to the plurality of light emitting units and correspond one-to-one to the plurality of color filters, the color filter allows only light emitted by the corresponding light emitting unit to pass through and filters out light of other wavelengths. The orthographic projection of the effective light emitting area of the light emitting unit on the substrate substrate is located within the orthographic projection area of the corresponding opening on the substrate substrate.

[0084] Optionally, the light shielding portion is a black matrix.

[0085] In the embodiment of the present application, the structure in which the color film layer and the light shielding layer are located can also be referred to as a COE (color film on encapsulation) layer, that is, the color film is directly formed on the encapsulation layer. The COE layer can replace the polarizing plate of the display panel.

[0086] In some embodiments, the COE layer further comprises an extraction out-coupling layer (EOC) disposed on the side of the color filter layer close to the substrate, and a plurality of openings are formed in the EOC, and the color filter is at least partially disposed in the openings of the EOC. The EOC can comprise multiple layers.

[0087] In some embodiments, the photoelectric sensor is disposed on the side of the light-shielding layer close to the substrate, and the projection of the photoelectric sensor on the substrate is located within the projection area of the light-shielding part on the substrate, and further optionally, the projection of the photoelectric sensor on the substrate overlaps with the projection of the light-shielding part on the substrate. That is, the photoelectric sensor is not disposed directly opposite the light-emitting unit, but is disposed on the side of the light-emitting unit, so as to monitor the brightness of the light-emitting unit while not affecting the light transmittance of the light-emitting unit. Moreover, the light-shielding part can also shield the external ambient light from interfering with the photoelectric sensor.

[0088] In some embodiments, the projection of the photoelectric sensor on the substrate overlaps with the projection of the opening on the substrate. That is, the photoelectric sensor is disposed directly opposite the light-emitting unit, so as to make the monitoring result of the light brightness more accurate.

[0089] In some embodiments, the light-shielding layer is disposed on the side of the color filter layer close to the substrate.

[0090] In some embodiments, the light-shielding layer is disposed on the side of the color filter layer away from the substrate.

[0091] In the embodiments of the present application, the close in the light-shielding layer is disposed on the side of the color filter layer close to the substrate refers to the spatial proximity, or the process sequence, the light-shielding layer is first formed on the substrate, and the color filter layer is formed on the substrate after the light-shielding layer.

[0092] In some embodiments, the photoelectric sensor comprises a first electrode, a second electrode, and a photoelectric sensor functional layer between the first electrode and the second electrode.

[0093] Optionally, in the case where the projection of the photoelectric sensor on the substrate overlaps with the projection of the effective light-emitting area of the light-emitting unit on the substrate, the first electrode and the second electrode are both transparent electrodes, and the photoelectric sensor functional layer is also a transparent material, so as to effectively receive the light of the light-emitting unit and not affect the light emission of the light-emitting unit.

[0094] Optionally, if the orthographic projection of the photoelectric sensor on the substrate does not overlap with the orthographic projection area of ​​the effective light-emitting area of ​​the light-emitting unit on the substrate, then in the first electrode and the second electrode, the electrode closer to the light-emitting unit is a transparent electrode, which can effectively receive the light from the light-emitting unit. The electrode farther from the light-emitting unit can be a transparent electrode or a non-transparent electrode. At the same time, the functional layer of the photoelectric sensor can be a transparent material or a non-transparent material.

[0095] In some embodiments, optionally, the signal line includes multiple first signal lines and multiple second signal lines, with the first electrode connected to the first signal line and the second electrode connected to the second signal line.

[0096] Optionally, the first signal line is disposed in the same layer as the first electrode and connected to it. Further optionally, the first signal line is disposed in the same layer as the first electrode and made of the same material, thus allowing it to be formed in a single patterning process.

[0097] Optionally, the second signal line is disposed in the same layer as the second electrode and connected to it. More optionally, the second signal line is disposed in the same layer as the second electrode and made of the same material, thus allowing it to be formed in a single patterning process.

[0098] In some embodiments, optionally, the plurality of first signal lines are arranged in rows, and the plurality of second signal lines are arranged in columns; the plurality of photoelectric sensors are arranged in rows and columns, with photoelectric sensors in the same row connected to the same first signal line, and photoelectric sensors in the same column connected to the same second signal line. This arrangement allows for accurate determination of the position coordinates of each photoelectric sensor, thereby determining the brightness compensation for the corresponding light-emitting unit.

[0099] In some embodiments, optionally, the plurality of light-emitting units correspond one-to-one with the plurality of photoelectric sensors. That is, one photoelectric sensor monitors the brightness of one light-emitting unit.

[0100] In some embodiments, optionally, the plurality of light-emitting units include light-emitting units of various different colors; at least two adjacent light-emitting units of the same color correspond to the same photoelectric sensor, that is, at least two adjacent light-emitting units of the same color share one photoelectric sensor. In this case, the area of ​​each photoelectric sensor is larger, thereby reducing the manufacturing difficulty. In addition, it can simplify the wiring without reducing the compensation effect.

[0101] The display panel in this embodiment of the invention has a pixel-level photoelectric sensor, which enables pixel-level brightness monitoring and compensation.

[0102] Optionally, the display panel can further include a pixel definition layer for defining a sub-pixel region.

[0103] Optionally, the display panel can further include an encapsulation layer for encapsulating the light emitting unit, and the encapsulation layer can include an inorganic encapsulation layer and / or an organic encapsulation layer.

[0104] Optionally, the display panel can include a touch layer for realizing touch.

[0105] Optionally, the display panel can include a driving circuit layer arranged on a side of the light emitting unit close to the substrate, for driving the light emitting unit to emit light.

[0106] The display panel in the embodiment of the present application can be an OLED display panel, and of course, it is not excluded to be other types of display panels.

[0107] The embodiment of the present application further provides a display device including a display panel and a control circuit connected with the display panel, the display panel is the display panel in any of the above embodiments, and the control circuit is used for receiving a first electric signal transmitted by a photoelectric sensor of the display panel, and performing brightness compensation on a light emitting unit corresponding to the photoelectric sensor according to the first electric signal.

[0108] Optionally, the control circuit can be a T-CON (timing controller, also known as logic board, screen driving board or center control board) circuit.

[0109] Please refer to FIG. 1, the embodiment of the present application further provides a manufacturing method of a display panel, including:

[0110] Step S11: providing a substrate;

[0111] Step S12: forming a plurality of light emitting units on the substrate;

[0112] Step S13: forming a plurality of photoelectric sensors and signal lines on a side of the light emitting unit away from the substrate, the photoelectric sensor is used for receiving light emitted by the corresponding light emitting unit and converting the received light into a first electric signal, and the signal line is connected with the photoelectric sensor and used for transmitting the first electric signal.

[0113] Optionally, the orthographic projection of the photoelectric sensor on the substrate does not overlap with the orthographic projection of the effective light emitting region of the light emitting unit on the substrate.

[0114] Alternatively, the orthographic projection of the photoelectric sensor on the substrate has an overlapping region with the orthographic projection of the effective light emitting region of the light emitting unit on the substrate.

[0115] Optionally, the manufacturing method further comprises:

[0116] forming a light shielding layer and a color filter layer on a side of the light emitting units away from the substrate, the color filter layer comprising a plurality of color filters; the light shielding layer comprising a light shielding portion and a plurality of openings, the plurality of openings corresponding to the plurality of light emitting units one by one and corresponding to the plurality of color filters one by one, for transmitting light emitted by the corresponding light emitting units;

[0117] wherein the photoelectric sensor is disposed on a side of the light shielding layer close to the substrate, and a projection of the photoelectric sensor on the substrate is located within a projection area of the light shielding portion on the substrate;

[0118] Alternatively, a projection of the photoelectric sensor on the substrate and a projection of the opening on the substrate have an overlapping area.

[0119] Optionally, the photoelectric sensor comprises a first electrode, a second electrode, and a photoelectric sensor functional layer between the first electrode and the second electrode.

[0120] Optionally, the signal line comprises a plurality of first signal lines and a plurality of second signal lines, the first electrode is connected to the first signal line, and the second electrode is connected to the second signal line.

[0121] Optionally, the plurality of first signal lines are arranged in a row manner, and the plurality of second signal lines are arranged in a column manner.

[0122] The plurality of photoelectric sensors are arranged in a row-column manner, the photoelectric sensors in the same row are connected to the same first signal line, and the photoelectric sensors in the same column are connected to the same second signal line.

[0123] Optionally, the plurality of light emitting units correspond to the plurality of photoelectric sensors one by one.

[0124] Alternatively,

[0125] The plurality of light emitting units comprise a plurality of light emitting units of different colors.

[0126] At least two light emitting units of the same color adjacent to each other correspond to the same photoelectric sensor.

[0127] Please refer to FIG. 2, the embodiment of the application further provides a brightness compensation method of a display panel, the display panel is any of the display panels described in the above embodiments, and the brightness compensation method comprises:

[0128] Step S21: receiving a first electrical signal transmitted by a photoelectric sensor of the display panel;

[0129] Step S22: performing brightness compensation on the light-emitting unit corresponding to the photoelectric sensor according to the first electrical signal.

[0130] In the embodiments of the present application, the brightness compensation method can be performed by the T-CON circuit of the display panel.

[0131] Please refer to FIG. 3 and FIG. 4, in some embodiments, the brightness compensation on the light-emitting unit corresponding to the photoelectric sensor according to the first electrical signal comprises:

[0132] Step S221: obtaining the image gray scale value of the light-emitting unit corresponding to the photoelectric sensor, and the reference brightness data corresponding to the image gray scale value pre-stored;

[0133] Please refer to FIG. 4, before that, the display panel needs to receive the image gray scale signal, and the driving circuit of the sub-pixel drives the sub-pixel to emit light according to the corresponding image gray scale value, and the photoelectric sensor receives the light signal of the sub-pixel and converts the light signal into an electrical signal.

[0134] In addition, the position of the photoelectric sensor can be determined by looking up the table according to the positions of the first signal line and the second signal line used for transmitting the first electrical signal.

[0135] It should be noted that in the embodiments of the present application, the reference brightness data when each sub-pixel (light-emitting unit) displays each image gray scale value is pre-stored. For example, the image gray scale value includes 0-255, and the reference brightness data when each sub-pixel (light-emitting unit) displays 0-255 is pre-stored. The reference brightness data may, for example, be the brightness data when the sub-pixel displays the corresponding image gray scale value at the factory.

[0136] Step S222: comparing the brightness data corresponding to the first electrical signal of the photoelectric sensor with the reference brightness data;

[0137] Step S223: if the difference between the brightness data corresponding to the first electrical signal of the photoelectric sensor and the reference brightness data is outside the preset range, generating brightness compensation data;

[0138] The brightness compensation data can be calculated based on Gamma and / or life acceleration factor.

[0139] Step S224: sending the brightness compensation data to the driving circuit corresponding to the light-emitting unit.

[0140] Optionally, the brightness compensation data can be sent to the driving circuit in the form of voltage / current compensation instructions.

[0141] In some embodiments, the brightness compensation method of the display panel further comprises:

[0142] Step S225: If the difference between the luminance data corresponding to the first electric signal of the photoelectric sensor and the reference luminance data is within a preset range, determining whether the light emitting unit corresponding to the photoelectric sensor is color casted;

[0143] Step S226: If the light emitting unit corresponding to the photoelectric sensor is color casted, generating white balance adjustment data and sending the white balance adjustment data to the driving circuit corresponding to the light emitting unit.

[0144] While compensating for the luminance, the white balance of the picture is adjusted, so that the display effect is consistent with the initial display after a long time of display.

[0145] In some embodiments, the luminance compensation on the light emitting unit corresponding to the photoelectric sensor according to the first electric signal further comprises:

[0146] Step S01: Acquiring a second electric signal transmitted by the photoelectric sensor when the light emitting unit of the display panel is not emitting light;

[0147] Step S02: Signal filtering the first electric signal according to the second electric signal.

[0148] The second electric signal is the interference of ambient light.

[0149] In some embodiments, the receiving of the first electric signal transmitted by the photoelectric sensor of the display panel further comprises: acquiring the first electric signal output by the photoelectric sensor row by row.

[0150] The luminance compensation method in the embodiments of the present application can also be called a real-time monitoring-compensation algorithm.

[0151] Optionally, in the embodiments of the present application, the luminance decay of the sub-pixel can also be predicted in advance according to historical luminance monitoring data (first electric signal), and the luminance compensation is performed according to the prediction result, so as to further reduce the display problems caused by luminance loss.

[0152] The structure of the display panel and the manufacturing method and the luminance compensation method of the present application will be described in detail below in combination with specific embodiments.

[0153] Embodiment One

[0154] Please refer to FIG. 5, which is a structural schematic diagram of an OLED display panel according to Embodiment One of the present application. The OLED display panel comprises a plurality of sub-pixels, which can comprise, for example, red (Red) sub-pixels, green (Green) sub-pixels and blue (Blue) sub-pixels. FIG. 5 only shows the structure of a red (Red) sub-pixel and a green (Green) sub-pixel.

[0155] The OLED display panel comprises: an anode 101 of a light-emitting unit, a light-emitting layer 102 of the light-emitting unit, a cathode 103 of the light-emitting unit, a pixel definition layer (PDL) 104, a first inorganic encapsulation layer 105, an organic encapsulation layer 106, a second inorganic encapsulation layer 107, a touch layer 108, a light shielding layer 109 of a COE layer, a light extraction layer 110, a color film layer 111, a planarization layer 112, a back plate (drive circuit layer + substrate) 113, a first electrode 114 of a photosensor, a photosensor functional layer 115, a second electrode 116 of the photosensor, a first signal line 117 between the first electrode 114 of the photosensor and a T-CON circuit 119, and a second signal line 118 between the second electrode 116 of the photosensor and the T-CON circuit 119. The planarization layer 112 is located on the back plate 113, the anode 101 of the light-emitting unit is located on the side of the planarization layer 112 away from the back plate 113, the pixel definition layer 104 defines a plurality of sub-pixel regions, the light-emitting layer 102 of the light-emitting unit is arranged in the sub-pixel region defined by the pixel definition layer 104, and the cathode 103 of the light-emitting unit is arranged on the side of the light-emitting layer 102 away from the back plate 113.

[0156] In some embodiments, referring to FIG. 5, the photosensor (including the first electrode 114 of the photosensor, the photosensor functional layer 115, and the second electrode 116 of the photosensor) is located between adjacent sub-pixels, the orthographic projection of the photosensor on the back plate 113 does not overlap the orthographic projection area of the effective light-emitting area of the light-emitting unit on the back plate 113, and the orthographic projection of the light extraction layer 110 on the back plate 113 covers the orthographic projection of the photosensor on the back plate 113, so as not to affect the light extraction efficiency of the sub-pixel. At the same time, the photosensor is located below the light shielding layer 109 of the COE layer, so as to avoid the influence of external ambient light on the photosensor.

[0157] As can be seen from FIG. 5, when the red sub-pixel emits a light beam 1 under the driving of the drive circuit, the light beam 1 enters the photosensor functional layer through the first electrode of the photosensor, generates photo-generated carriers in the photosensor functional layer, forms a current (an electrical signal) through the first electrode and the second electrode of the photosensor, and transmits the generated electrical signal to the T-CON circuit through the first signal line and the second signal line. The electrical signal is processed by a real-time monitoring-compensation algorithm built in the T-CON circuit, the current brightness loss of the sub-pixel is analyzed, corresponding brightness compensation data is generated and sent back to the drive circuit of the sub-pixel, and brightness compensation is completed.

[0158] The real-time monitoring-compensation algorithm is to obtain the luminance data (electric signal) of the sub-pixel in real time, compare the luminance data of the sub-pixel with the reference luminance data corresponding to the current image gray scale value of the sub-pixel, generate luminance compensation data according to the comparison result, and correct the Gamma curve and the life curve in the luminance compensation algorithm, so as to reduce or eliminate the over-compensation caused by the screen difference and the pixel difference and the local color deviation problem of the screen after compensation.

[0159] It should be noted that in the embodiment of the present application, the reference luminance data when each sub-pixel (light emitting unit) displays each image gray scale value is pre-stored in the T-CON circuit. For example, the image gray scale value includes 0-255, and the reference luminance data when each sub-pixel (light emitting unit) displays 0-255 is pre-stored. The reference luminance data may be, for example, the luminance data when the sub-pixel displays the corresponding image gray scale value at the factory.

[0160] FIG. 6 is a schematic diagram of the signal line of the OLED display panel according to the embodiment of the present application. FIG. 6 shows a display area including one red sub-pixel, four green sub-pixels, and four blue sub-pixels. For the convenience of observation, the light shielding layer 109 and the light extraction layer 110 are omitted in FIG. 6, and only the photosensors on the touch layer 108 and the signal lines thereof are retained. As shown in FIG. 6, 120 is the light emitting area of the red sub-pixel, 121 is the light emitting area of the green sub-pixel, and 122 is the light emitting area of the blue sub-pixel. The photosensors are located above the touch layer 108. The photosensors a, b, and c include the first electrode 114, the photosensor functional layer 115, and the second electrode 116 from the end close to the touch layer 108 to the end away from the touch layer 108. 117 is the first signal line between the first electrode 114 of the photosensor and the T-CON, which is in the same layer and connected with the first electrode 114. 118 is the second signal line between the second electrode 116 of the photosensor and the T-CON, which is in the same layer and connected with the second electrode 116. As shown in FIG. 5, the light extraction layer 110 can be used as the insulating layer between the two layers of the first signal line and the second signal line.

[0161] In some embodiments, referring to FIG. 6, the first signal line and the second signal line are located in different layers, and the running modes of the first signal line and the second signal line are substantially perpendicular to each other, and both are located between adjacent sub-pixels. For example, the distance between the two adjacent first signal lines (or second signal lines) corresponding to the red sub-pixel is greater than the distance between the two adjacent first signal lines (or second signal lines) corresponding to the green sub-pixel, so that the first signal line (or the second signal line) does not affect the light emitting area of the sub-pixel.

[0162] In some embodiments, referring to FIG. 6, the photoelectric sensors a, b, and c are located in the center of a pixel unit. For example, a pixel unit includes 2 green sub-pixels, 1 red sub-pixel, and 1 blue sub-pixel. The photoelectric sensors a, b, and c are located at the intersection of the center connection line of the red sub-pixel, the center connection line of the blue sub-pixel, and the center connection line of the 2 green sub-pixels. In this way, the light emitted by the sub-pixels can be uniformly absorbed.

[0163] When the light ray a emitted by the light emitting unit of the light emitting region 122 of the blue sub-pixel is received by the photoelectric sensor a, the photoelectric sensor a converts the received light ray into an electrical signal and feeds back the electrical signal to the T-CON circuit through the first signal line A1 and the second signal line B1. When the light ray b emitted by the light emitting unit of the light emitting region 121 of the green sub-pixel is received by the photoelectric sensor b, the photoelectric sensor b converts the received light ray into an electrical signal and feeds back the electrical signal to the T-CON circuit through the first signal line A2 and the second signal line B1. When the light ray c emitted by the light emitting unit of the light emitting region 120 of the red sub-pixel is received by the photoelectric sensor c, the photoelectric sensor c converts the received light ray into an electrical signal and feeds back the electrical signal to the T-CON circuit through the first signal line A2 and the second signal line B2. In this way, the T-CON circuit can determine the light emitting intensity of the three light rays and correspond to them one by one (light ray a: A1B1, light ray b: A2B1, and light ray c: A2B2). The sub-pixels in the entire display area (AA area) have the same corresponding relationship. For the sub-pixel x in the i-th row and the j-th column, the electrical signal of the corresponding photoelectric sensor is AiBj. In this embodiment, the light shielding layer 109 is used as an anti-reflection structure covering the photoelectric sensor, which reduces the reflectivity of the screen and blocks the influence of ambient light on the reception of the light signal by the sensor.

[0164] FIG. 7 shows a schematic diagram of the manufacturing method of the OLED display panel according to the first embodiment of the present application. The manufacturing method of the present embodiment includes the following steps:

[0165] Step 1: manufacturing the back plate, the planar layer, the anode of the light emitting unit, the pixel definition layer, the light emitting layer of the light emitting unit, the cathode of the light emitting unit, the first inorganic encapsulation layer, the organic encapsulation layer, the second inorganic encapsulation layer, and the touch layer.

[0166] Step 2: after the preparation of the touch layer, the first electrode 114 of the photoelectric sensor and the photoelectric sensor functional layer 115 are prepared on the pixel definition layer by sputtering, mask, and other processes.

[0167] Step 3: preparing the light extraction layer as an insulating layer between the two signal lines of the photoelectric sensor. Then, the second electrode 116 of the photoelectric sensor and the light shielding layer 109 are prepared, thereby reducing the interference of ambient light on the photoelectric sensor and the reflectivity of the OLED display panel to ambient light.

[0168] Step 4: Finally complete the preparation of the light extraction layer on the top of the light shielding layer 109 and the color filter layer.

[0169] The OLED display panel in the embodiment of the present application realizes the function of real-time monitoring of the brightness of the sub-pixels without affecting the light emission of the sub-pixels.

[0170] In the present embodiment, by designing the photosensor array under the light shielding layer of the COE layer, without affecting the light emission of the sub-pixels and excluding most of the environmental light interference, the light emission intensity of the sub-pixels is collected and converted into a photo-generated electrical signal, the electrical signal is analyzed by the real-time monitoring-compensation algorithm built in the T-CON circuit, the brightness compensation data is generated according to the analysis result, and the brightness compensation data is fed back to the driving circuit of the corresponding sub-pixel, so as to realize dynamic compensation of the brightness loss and achieve the effect of prolonging the color and brightness life of the OLED display panel.

[0171] Embodiment two

[0172] Please refer to FIG. 8, which is a structural schematic diagram of the OLED display panel in the second embodiment of the present application. The OLED display panel includes a plurality of sub-pixels, which may include, for example, red (Red) sub-pixels, green (Green) sub-pixels and blue (Blue) sub-pixels, and only the structure of a red (Red) sub-pixel and a green (Green) sub-pixel is shown in FIG. 8.

[0173] The OLED display panel includes: an anode (Anode) 201 of a light emitting unit, a light emitting layer 202 of the light emitting unit, a cathode (Cathode) 203 of the light emitting unit, a pixel definition layer (PDL) 204, a first inorganic encapsulation layer 205, an organic encapsulation layer 206, a second inorganic encapsulation layer 207, a touch layer 208, a planar layer 209, a back plate (driving circuit layer + substrate) 210, a light shielding layer 211 of a COE layer, a light extraction layer 212, a color filter layer 213, a first electrode 214 of a photosensor, a photosensor functional layer 215, a second electrode 216 of the photosensor, a first signal line 217 between the first electrode 214 of the photosensor and a T-CON circuit 219, and a second signal line 218 between the second electrode 216 of the photosensor and the T-CON circuit 219.

[0174] The planar layer 209 is located on the back plate 210, the anode 201 of the light emitting unit is located on the side of the planar layer 209 away from the back plate 210, the pixel definition layer 204 defines a plurality of sub-pixel regions, the light emitting layer 202 of the light emitting unit is arranged in the sub-pixel region defined by the pixel definition layer 204, and the cathode 203 of the light emitting unit is arranged on the side of the light emitting layer 202 away from the back plate 210.

[0175] In some embodiments, referring to FIG. 8, the orthographic projection of the photosensor functional layer 215 of the photosensor on the back plate 210 overlaps with the orthographic projection area of the effective light emitting area of the light emitting unit on the back plate 210, and further optionally, the orthographic projection area of the effective light emitting area of the light emitting unit on the back plate 210 is located within the orthographic projection area of the photosensor functional layer 215 of the photosensor on the back plate 210, that is, the photosensor and the light emitting unit are arranged opposite to each other, so that the result of the monitored light brightness is more accurate.

[0176] As can be seen from FIG. 8, when the red sub-pixel emits a light beam 2 under the driving of the driving circuit, the light beam 2 passes through the first electrode of the photosensor into the photosensor functional layer, generates photo-generated carriers in the photosensor functional layer, forms a current (an electrical signal) through the first electrode and the second electrode of the photosensor, and transmits the generated electrical signal to the T-CON circuit through the first signal line and the second signal line. The electrical signal is processed by the real-time monitoring-compensation algorithm built in the T-CON circuit, the current brightness loss of the sub-pixel is analyzed, corresponding brightness compensation data is generated and sent back to the driving circuit of the sub-pixel, and brightness compensation is completed.

[0177] In the embodiment of the present application, the photosensor can completely collect the light emitted by the corresponding sub-pixel, and the generated electrical signal has strong anti-interference of light emitted by the surrounding sub-pixels.

[0178] The real-time monitoring-compensation algorithm is to obtain the brightness data (electrical signal) of the sub-pixel in real time, compare the brightness data of the sub-pixel with the reference brightness data corresponding to the current image gray value of the sub-pixel, generate brightness compensation data according to the comparison result, and correct the Gamma curve and the life curve in the brightness compensation algorithm, so as to reduce or eliminate the over-compensation and the local color cast problem of the screen after compensation caused by the screen difference and the pixel difference.

[0179] It should be noted that in the embodiment of the present application, the T-CON circuit pre-stores the reference brightness data of each sub-pixel (light emitting unit) when displaying each image gray value. For example, the image gray value includes 0-255, and the reference brightness data of each sub-pixel (light emitting unit) when displaying 0-255 is pre-stored. The reference brightness data may, for example, be the brightness data of the sub-pixel when displaying the corresponding image gray value at the factory.

[0180] Figure 9 is a schematic diagram of the signal line routing of the OLED display panel of the second embodiment of the present application. Figure 9 illustrates a display area comprising one red sub-pixel, four green sub-pixels and four blue sub-pixels. For the sake of convenience, the light shielding layer 211 and the light extraction layer 212 are omitted in Figure 9, and only the photosensor on the touch layer 208 and the signal lines thereof are retained. As shown in Figure 9, 220 is the light emitting area of the red sub-pixel, 221 is the light emitting area of the green sub-pixel, and 222 is the light emitting area of the blue sub-pixel. In this embodiment, the photosensor is located in the pixel hole of the COE layer and completely covers the opening area of the pixel definition layer of each sub-pixel. The photosensor comprises, from the end close to the touch layer 208 to the end away from the touch layer 208, the first electrode 214, the photosensor functional layer 215 and the second electrode 216. 217 is the first signal line between the first electrode 214 of the photosensor and the T-CON, which is in the same layer as the first electrode 214 and connected thereto. 218 is the second signal line between the second electrode 216 of the photosensor and the T-CON, which is in the same layer as the second electrode 216 and connected thereto. As shown in Figure 8, the light extraction layer 212 can be used as the insulating layer between the two layers of the first signal line and the second signal line.

[0181] In some embodiments, referring to Figure 9, the first signal line and the second signal line are located in different layers, and the routing of the first signal line and the second signal line is substantially perpendicular to each other, and both are located between adjacent sub-pixels.

[0182] In this embodiment, after the photosensor receives the light emitted by the sub-pixel directly below it, the photosensor feeds back the electrical signal converted from the received light signal to the T-CON circuit via the first signal line and the second signal line. The principle is the same as that of the first embodiment, and thus will not be described here. The light shielding layer 211 is not covered on the photosensor as an anti-reflection structure, but is located above the first signal line and inside the light extraction layer. In other COE schemes, the light shielding layer can also be located on the side of the color filter layer away from the substrate, which is related to the specific product structure design and is not limited here.

[0183] Figure 10 is a schematic diagram of the manufacturing method of the OLED display panel of the second embodiment of the present application. The manufacturing method of this embodiment comprises:

[0184] Step 1: manufacturing the backplane, the planarization layer, the anode of the light emitting unit, the pixel definition layer, the light emitting layer of the light emitting unit, the cathode of the light emitting unit, the first inorganic encapsulation layer, the organic encapsulation layer, the second inorganic encapsulation layer and the touch layer. After the preparation of the touch layer is completed, the first electrode of the photosensor is prepared by sputtering process and the first signal line is formed at the interface of the touch layer and directly above the pixel definition layer.

[0185] Step 2: preparing the light shielding layer and a layer of light extraction layer directly above the pixel definition layer to form the pixel hole of the COE layer.

[0186] Step 3: Prepare the photoelectric sensor functional layer in the pixel hole of the COE layer by a Mask process or the like, and prepare the second layer light extraction layer on the light shielding layer by a Mask process or the like.

[0187] Step 4: Prepare the second electrode of the photoelectric sensor by a sputtering process and form the second signal line on the top of the EOC layer.

[0188] Step 5: Finally, prepare the color filter layer above the second electrode of the photoelectric sensor.

[0189] In this embodiment, by preparing the photoelectric sensor in the COE layer pixel hole directly opposite the sub-pixel, the light intensity signal of the corresponding sub-pixel is accurately collected to generate an electrical signal, and the electrical signal is transmitted to the T-CON circuit with a built-in real-time monitoring-compensation algorithm through the signal line in the COE layer for analysis. According to the analysis result, the T-CON circuit generates brightness compensation data and sends the brightness compensation data to the driving circuit corresponding to the sub-pixel to complete dynamic compensation. In addition, in the embodiment of the application, the photoelectric sensor also needs to collect and analyze the ambient light signal of the sub-pixel in the dark state to exclude the ambient light signal interference.

[0190] Embodiment Three

[0191] In the above two embodiments, the display panel has a plurality of light emitting units arranged in a manner that adjacent pixels share one or more sub-pixels. In this embodiment, the display panel can have a plurality of light emitting units arranged in a Real RGB manner, or other similar display panels with the same color sub-pixels arranged continuously.

[0192] In this embodiment, the display panel is taken as an example arranged in a Real RGB manner, and at least two adjacent light emitting units of the same color correspond to (share) the same photoelectric sensor. This manner can simplify the wiring while not reducing the compensation effect.

[0193] As shown in FIGS. 11 and 12, two (or more) adjacent Red / Green / Blue sub-pixels are covered by the same photoelectric sensor. When performing brightness compensation, the A row of sub-pixels is kept on, the B row of sub-pixels is kept off, the photoelectric sensor collects the brightness electrical signal of the A row of sub-pixels alone, and the A row of sub-pixels is compensated; the B row of sub-pixels is compensated in the same way.

[0194] Please refer to FIG. 13, which is a structural schematic diagram of an OLED display panel according to Embodiment Three of the application. The OLED display panel includes a plurality of sub-pixels, which can include, for example, red (Red) sub-pixels, green (Green) sub-pixels, and blue (Blue) sub-pixels. FIG. 13 only shows the structure of two adjacent green (Green) sub-pixels sharing the same photoelectric sensor.

[0195] The OLED display panel comprises: an anode 301 of a light emitting unit, a light emitting layer 302 of the light emitting unit, a cathode 303 of the light emitting unit, a pixel definition layer (PDL) 304, a first inorganic encapsulation layer 305, an organic encapsulation layer 306, a second inorganic encapsulation layer 307, a touch layer 308, a planarization layer 309, a back plate (a driving circuit layer + a substrate) 310, a light shielding layer 311 of a COE layer, a light extraction layer 312, a color filter layer 313, a first electrode 314 of a photosensor, a photosensor functional layer 315, a second electrode 316 of the photosensor, a first signal line 317 between the first electrode 314 of the photosensor and a T-CON circuit 319, and a second signal line 318 between the second electrode 316 of the photosensor and the T-CON circuit 319.

[0196] The planarization layer 309 is located on the back plate 310, the anode 301 of the light emitting unit is located on a side of the planarization layer 309 away from the back plate 310, the pixel definition layer 304 defines a plurality of sub-pixel regions, the light emitting layer 302 of the light emitting unit is arranged in the sub-pixel region defined by the pixel definition layer 304, and the cathode 303 of the light emitting unit is arranged on a side of the light emitting layer 302 away from the back plate 310.

[0197] In some embodiments, referring to FIG. 13, the orthographic projection of the photosensor functional layer 315 of the photosensor on the back plate 310 overlaps with the orthographic projection area of the effective light emitting area of the light emitting unit on the back plate 310, and further optionally, the orthographic projection area of the effective light emitting area of the light emitting unit on the back plate 310 is located in the orthographic projection area of the photosensor functional layer 315 of the photosensor on the back plate 310, that is, the photosensor and the light emitting unit are arranged opposite to each other, so that the monitored light brightness result is more accurate.

[0198] In this embodiment, the preparation process of the display panel is basically the same as that of Embodiment 2, and the only difference is that the first electrode and the second electrode of the photosensor corresponding to the adjacent two same-color sub-pixels are connected respectively.

[0199] Fig. 14 is a schematic diagram of the signal line routing of the OLED display panel of the third embodiment of the present application, which shows two adjacent Real RGB arrangement arrays. For the convenience of observation, the light shielding layer 311 and the light extraction layer 312 are omitted in Fig. 14, and only the photosensors on the touch layer 308 and their signal lines are retained. As shown in Fig. 14, 320 is the light emitting area of the red sub-pixel, 321 is the light emitting area of the green sub-pixel, and 322 is the light emitting area of the blue sub-pixel. In this embodiment, the photosensor is located in the pixel hole of the COE layer and completely covers the opening area of the pixel definition layer of each sub-pixel. The photosensor comprises, from the end close to the touch layer 308 to the end away from the touch layer 308, a first electrode 314, a photosensor functional layer 315, and a second electrode 316. Here, adjacent photosensors of the same color share one first electrode and one second electrode to reduce the mask precision. 317 is the first signal line between the first electrode 314 of the photosensor and the T-CON, which is in the same layer and connected to the first electrode 314; 318 is the second signal line between the second electrode 316 of the photosensor and the T-CON, which is in the same layer and connected to the second electrode 316. As shown in Fig. 12, the light extraction layer 312 can be used as an insulating layer between the two layers of first signal lines and second signal lines.

[0200] In this embodiment, the photosensor receives the light signal after the sub-pixel directly below it emits light, converts the light signal into a luminance electrical signal, and feeds back the luminance electrical signal to the T-CON circuit via the first signal line and the second signal line. The principle is the same as that of the first embodiment, and the difference is that the two sub-pixels of the same color below the same photosensor realize independent luminance acquisition by being turned on / off respectively, which has been illustrated in Fig. 13 and will not be repeated here. The light shielding layer 311, as an anti-reflection structure, does not cover the photosensor, but is above the first signal line 317 and inside the light extraction layer 312. In other COE schemes, the light shielding layer can also be located on the side of the light extraction layer 312 away from the substrate, which is related to the specific product structure design and is not limited here. In addition, in the embodiments of the present application, the photosensor can collect and analyze the ambient light signal of the sub-pixel in the dark state, thereby excluding the interference of the ambient light signal.

[0201] The present application also provides a computer readable storage medium, which stores a computer program. When the computer program is executed by a processor, each process of the luminance compensation method of the display panel is realized, and the same technical effect is achieved. To avoid repetition, details are not repeated here. The computer readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0202] The embodiment of the present application further provides a computer program product comprising computer instructions which, when executed by a processor, implement each process of the method embodiment shown in Fig. 2 or Fig. 3 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0203] Referring to Fig. 15, Fig. 15 is a schematic diagram of the effect of the brightness compensation method of the display panel according to the embodiment of the present application on the brightness compensation of the display panel. After the brightness compensation of the display panel, the long-time residual image is basically eliminated, and the brightness decay rate difference area is basically indistinguishable from the surrounding area.

[0204] Referring to Fig. 16, Fig. 16 is a schematic diagram of the effect of the conventional brightness compensation method on the brightness compensation of the display panel. As can be seen from Fig. 16, after the brightness compensation of the display panel by the conventional brightness compensation method, the long-time residual image still exists, and there is an overcompensation problem in some areas.

[0205] In summary, compared with the prior art, the beneficial technical effects of the present application include but are not limited to:

[0206] 1. Real-time monitoring of pixel brightness ensures the stability and consistency of display effect.

[0207] 2. Dynamic compensation of brightness loss prolongs the color and brightness life of the display panel.

[0208] 3. Reducing maintenance costs improves user experience.

[0209] 4. Optimizing compensation strategy through real-time monitoring-compensation algorithm improves compensation accuracy and efficiency.

[0210] 5. Predicting the trend of brightness loss, maintenance in advance, reducing unexpected failures.

[0211] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles, or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device including the element.

[0212] Those skilled in the art can clearly understand the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, also can be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application essentially or say the part which contributes to the prior art can be embodied in the form of software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a plurality of instructions to make a terminal (may be a mobile phone, computer, server, air conditioner, or network equipment, etc.) execute the method described in various embodiments of the present application.

[0213] The embodiments of the present application are described above in conjunction with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

A display panel, characterized in that, The display panel comprises: a substrate substrate; a plurality of light emitting units arranged on the substrate substrate; a plurality of photoelectric sensors arranged on a side of the light emitting units away from the substrate substrate, the photoelectric sensors being configured to receive light emitted by the corresponding light emitting units and convert the received light into first electrical signals; a signal line connected to the photoelectric sensors and configured to transmit the first electrical signals. According to the display panel of claim 1, wherein a projection of the photoelectric sensor on the substrate substrate does not overlap with a projection of an effective light emitting area of the light emitting unit on the substrate substrate; or a projection of the photoelectric sensor on the substrate substrate has an overlapping area with a projection of the effective light emitting area of the light emitting unit on the substrate substrate. The display panel according to claim 2, characterized in that, Further comprising: a color filter layer arranged on a side of the light emitting units away from the substrate substrate, the color filter layer comprising a plurality of color filters; a light shielding layer comprising a light shielding portion and a plurality of openings, the plurality of openings corresponding one-to-one to the plurality of light emitting units and the plurality of color filters, and being configured to transmit light emitted by the corresponding light emitting units; wherein the photoelectric sensors are arranged on a side of the light shielding layer close to the substrate substrate, and a projection of the photoelectric sensors on the substrate substrate is located within a projection area of the light shielding portion on the substrate substrate; or a projection of the photoelectric sensors on the substrate substrate has an overlapping area with a projection of the openings on the substrate substrate. According to the display panel of claim 1, wherein the photoelectric sensor comprises a first electrode, a second electrode, and a photoelectric sensor functional layer between the first electrode and the second electrode. According to the display panel of claim 4, wherein the signal line comprises a plurality of first signal lines and a plurality of second signal lines, the first electrode is connected to the first signal line, and the second electrode is connected to the second signal line. According to the display panel of claim 5, wherein the plurality of first signal lines are arranged in a row manner, and the plurality of second signal lines are arranged in a column manner; the plurality of photoelectric sensors are arranged in a row-column manner, the photoelectric sensors in the same row are connected to the same first signal line, and the photoelectric sensors in the same column are connected to the same second signal line. According to the display panel of claim 1, wherein the plurality of light emitting units correspond one-to-one to the plurality of photoelectric sensors; or the plurality of light emitting units comprise light emitting units of different colors; at least two light emitting units of the same color adjacent to each other correspond to the same photoelectric sensor. The display panel comprises: A display device characterized by comprising: a substrate substrate; A manufacturing method of a display panel, characterized in that, a plurality of light emitting units arranged on the substrate substrate; a plurality of photoelectric sensors arranged on a side of the light emitting units away from the substrate substrate, the photoelectric sensors being configured to receive light emitted by the corresponding light emitting units and convert the received light into first electrical signals; a signal line connected to the photoelectric sensors and configured to transmit the first electrical signals. According to the display panel of claim 1, wherein a projection of the photoelectric sensor on the substrate substrate does not overlap with a projection of an effective light emitting area of the light emitting unit on the substrate substrate; or a projection of the photoelectric sensor on the substrate substrate has an overlapping area with a projection of the effective light emitting area of the light emitting unit on the substrate substrate. Further comprising: a color filter layer arranged on a side of the light emitting units away from the substrate substrate, the color filter layer comprising a plurality of color filters; a light shielding layer comprising a light shielding portion and a plurality of openings, the plurality of openings corresponding one-to-one to the plurality of light emitting units and the plurality of color filters, and being configured to transmit light emitted by the corresponding light emitting units; wherein the photoelectric sensors are arranged on a side of the light shielding layer close to the substrate substrate, and a projection of the photoelectric sensors on the substrate substrate is located within a projection area of the light shielding portion on the substrate substrate; or a projection of the photoelectric sensors on the substrate substrate has an overlapping area with a projection of the openings on the substrate substrate. According to the display panel of claim 1, wherein the photoelectric sensor comprises a first electrode, a second electrode, and a photoelectric sensor functional layer between the first electrode and the second electrode. According to the display panel of claim 4, wherein the signal line comprises a plurality of first signal lines and a plurality of second signal lines, the first electrode is connected to the first signal line, and the second electrode is connected to the second signal line. According to the display panel of claim 5, wherein the plurality of first signal lines are arranged in a row manner, and the plurality of second signal lines are arranged in a column manner; the plurality of photoelectric sensors are arranged in a row-column manner, the photoelectric sensors in the same row are connected to the same first signal line, and the photoelectric sensors in the same column are connected to the same second signal line. According to the display panel of claim 1, wherein the plurality of light emitting units correspond one-to-one to the plurality of photoelectric sensors; or the plurality of light emitting units comprise light emitting units of different colors; at least two light emitting units of the same color adjacent to each other correspond to the same photoelectric sensor. The display panel comprises: a substrate substrate; a plurality of light emitting units arranged on the substrate substrate; a plurality of photoelectric sensors arranged on a side of the light emitting units away from the substrate substrate, the photoelectric sensors being configured to receive light emitted by the corresponding light emitting units and convert the received light into first electrical signals; a signal line connected to the photoelectric sensors and configured to transmit the first electrical signals. A plurality of photoelectric sensors and signal lines are formed on a side of the light emitting unit away from the substrate, the photoelectric sensors are used to receive light emitted by the corresponding light emitting unit and convert the received light into a first electrical signal, and the signal lines are connected with the photoelectric sensors and used to transmit the first electrical signal. A brightness compensation method of a display panel, characterized in that, The display panel is the display panel of any one of claims 1-7, and the brightness compensation method comprises: receiving the first electrical signal transmitted by the photoelectric sensor of the display panel; compensating the brightness of the light emitting unit corresponding to the photoelectric sensor according to the first electrical signal. The method of claim 10, wherein The compensation of the brightness of the light emitting unit corresponding to the photoelectric sensor according to the first electrical signal comprises: obtaining an image gray scale value of the light emitting unit corresponding to the photoelectric sensor and reference brightness data corresponding to the image gray scale value stored in advance; comparing the brightness data corresponding to the first electrical signal of the photoelectric sensor with the reference brightness data; generating brightness compensation data if the difference between the brightness data corresponding to the first electrical signal of the photoelectric sensor and the reference brightness data is outside a preset range; sending the brightness compensation data to the driving circuit corresponding to the light emitting unit. The method of claim 11, wherein Further comprising: if the difference between the brightness data corresponding to the first electrical signal of the photoelectric sensor and the reference brightness data is within the preset range, determining whether the light emitting unit corresponding to the photoelectric sensor is color casted; if the light emitting unit corresponding to the photoelectric sensor is color casted, generating white balance adjustment data and sending the white balance adjustment data to the driving circuit corresponding to the light emitting unit. The method of claim 10, wherein The compensation of the brightness of the light emitting unit corresponding to the photoelectric sensor according to the first electrical signal further comprises: obtaining a second electrical signal transmitted by the photoelectric sensor when the light emitting unit of the display panel is not emitting light; performing signal filtering on the first electrical signal according to the second electrical signal. The method of claim 10, wherein The receiving of the first electrical signal transmitted by the photoelectric sensor of the display panel further comprises: obtaining the first electrical signal output by the photoelectric sensor in rows. A computer-readable storage medium, characterized by The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the brightness compensation method of the display panel according to any one of claims 10-14. A computer program product, characterized in that The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the steps of the brightness compensation method of the display panel according to any one of claims 10-14.

Images