CN112542089A - Display panel and display device - Google Patents
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- CN112542089A CN112542089A CN202011391151.6A CN202011391151A CN112542089A CN 112542089 A CN112542089 A CN 112542089A CN 202011391151 A CN202011391151 A CN 202011391151A CN 112542089 A CN112542089 A CN 112542089A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
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Abstract
The application discloses a display panel and a display device, the display panel comprises an array substrate, a light-emitting device layer and a color filter layer, wherein the array substrate is provided with a first pixel circuit and a second pixel circuit, and the second pixel circuit comprises a transistor and a chromaticity detection element which are electrically connected with each other; the light-emitting device layer is stacked on the array substrate and comprises a plurality of light-emitting units; the color filter layer is arranged on one side, back to the array substrate, of the light-emitting device layer in a laminated mode, the color filter layer comprises a shielding layer with a plurality of openings and a plurality of filter units, and the filter units are correspondingly arranged in the openings; the chromaticity detection element comprises a photosensitive area which is arranged corresponding to the opening, the display panel has a detection mode, and the ambient light is incident to the photosensitive area through the filtering unit and the light emitting unit under the detection mode. The display panel realizes the color detection of the ambient light on the premise of ensuring the performance of the display panel so as to compensate the display effect.
Description
Technical Field
The application belongs to the technical field of display equipment, and particularly relates to a display panel and a display device.
Background
A often integrated chrominance sensor in the equipment that is arranged in taking a picture to be used for improving the white balance of picture, when taking a picture, survey the content of red light, green light and blue light in the external environment light through chrominance sensor, the regulation of chroma is accomplished in the compensation of rethread algorithm, so that picture visual effect is better, reduces the influence that the environment caused the shooting effect.
In the prior art, a chromaticity sensor is usually arranged on the back of equipment, so that color temperature compensation can be carried out only by using the chromaticity sensor when a rear camera is used; when placing the colorimetric sensor on the front side of the screen of the device, one approach is to slot the screen and place the colorimetric sensor in the slot, which is contrary to the general screen trend; another method is to place the chrominance sensor under the screen, but this kind of scheme requires more to the screen transmissivity, and place the chrominance sensor in the screen below can lead to the module stack structure thicker, occupy too much space under the screen, therefore the scheme among the prior art can't set up the chrominance sensor when not sacrificing screen performance to compensate simultaneously to the image that leading camera and rear camera shot.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, and the display panel realizes the color detection of ambient light on the premise of ensuring the performance of the display panel so as to compensate the display effect.
In one aspect, the present embodiments provide a display panel having a plurality of first sub-pixels distributed in an array and a plurality of second sub-pixels distributed among the first sub-pixels, the display panel including an array substrate, a light emitting device layer, and a color filter layer, wherein the array substrate has a first pixel circuit and a second pixel circuit, and the second pixel circuit includes a transistor and a chromaticity detection element electrically connected to each other; the light-emitting device layer is arranged on the array substrate in a stacked mode and comprises a plurality of light-emitting units; the color filter layer is arranged on one side, back to the array substrate, of the light-emitting device layer in a laminated mode, the color filter layer comprises a shielding layer with a plurality of openings and a plurality of filtering units, and the filtering units are correspondingly arranged in the openings; the chromaticity detection element comprises a photosensitive area, the photosensitive area is arranged corresponding to the opening, the display panel is provided with a detection mode, and the ambient light is incident to the photosensitive area through the light filtering unit and the light emitting unit in the detection mode.
Optionally, the array substrate includes a transistor device layer for forming a transistor, the transistor device layer includes a semiconductor layer, and the chromaticity detection element and the semiconductor layer are disposed on the same layer.
Optionally, the chromaticity detection element is a photodiode, the photodiode includes a first end, a second end, and a photosensitive region located between the first end and the second end, and the first end, the photosensitive region, and the second end are all disposed on the same layer as the semiconductor layer.
Optionally, the array substrate includes a transistor device layer for forming a transistor and a planarization layer formed on a side of the transistor device layer facing the light emitting device layer, and the chromaticity detection element is disposed between the transistor device layer and the planarization layer.
Optionally, the chromaticity detection element is a photodiode, the photodiode includes a first end, a second end and a photosensitive region located between the first end and the second end, the first end of the photodiode is located towards the transistor device layer on one side of the planarization layer, the photosensitive region is located where the first end deviates from the transistor device layer on one side, and the second end is located where the photosensitive region deviates from one side of the first end.
Optionally, the first pixel circuit and the second pixel circuit have the same number of transistors, and the second sub-pixel and the chromaticity detecting element multiplex the transistors in the second pixel circuit.
Alternatively, the number of transistors in the second pixel circuit is larger than the number of transistors in the first pixel circuit, and the transistors controlling the chromaticity detecting element are insulated from the other transistors.
Optionally, the light emitting device layer includes light emitting cells of multiple colors, and each opening of the shielding layer corresponds to one light emitting cell, or each opening of the shielding layer corresponds to multiple light emitting cells of the same color.
Optionally, each opening corresponds to one of the photosensitive regions, or a portion of the opening corresponding to the light emitting unit of each color corresponds to one of the photosensitive regions.
The application also provides a display device which comprises any one of the display panels provided in the technical scheme.
Compared with the prior art, in the display panel provided by the application, the color filter layer comprises a shielding layer with a plurality of openings and a filter unit arranged in the openings, the openings and the filter unit in the openings are in one-to-one correspondence with the light emitting unit of the second sub-pixel, a chrominance detection element is integrated in a second pixel circuit for controlling the second sub-pixel, the chrominance detection element comprises a photosensitive area, the photosensitive area is arranged in correspondence with the openings, so that the photosensitive area, the light emitting unit, the openings and the filter unit are all in mutual correspondence, when the display panel is in a detection mode, the light emitting unit does not emit light but transmits light, the chrominance detection element is in a working state, ambient light is received by the photosensitive area of the chrominance detection element after passing through the filter unit and the light emitting unit in sequence, wherein each chrominance detection element only detects the light intensity of light of one color filtered by the filter unit, and the current is converted into the current with corresponding magnitude, and different chromaticity detection elements respectively detect the light intensity of the light with three colors forming the ambient light, thereby realizing the chromaticity detection of the external ambient light; in the display panel that this application provided, the cooperation through filtering unit and colourity detecting element has realized the colourity detection to external environment light, adopt and integrate colourity detecting element in the inside design of array substrate, can reduce the penetrating rete quantity of ambient light and thickness on the one hand, improve the sensitivity that colourity detecting element detected, on the other hand, compare with prior art and can reduce display panel's whole thickness, thereby realize the detection to ambient light under the prerequisite that does not influence display panel performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a detection mode of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a partial cross section of a first second pixel circuit provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a partial cross section of a second pixel circuit according to an embodiment of the present application;
fig. 4 is a schematic diagram of light emission of a display panel provided in an embodiment of the present application when displaying;
fig. 5 is a schematic structural diagram of a partial cross section of a third second pixel circuit provided in the embodiment of the present application;
fig. 6 is a schematic structural diagram of a partial cross section of a fourth second pixel circuit provided in the embodiment of the present application;
fig. 7 is a schematic structural diagram of a partial cross section of a fifth second pixel circuit provided in an embodiment of the present application.
In the drawings:
1-an array substrate; 11-a transistor; 111-a semiconductor layer; 12-a photodiode; 121-a first end; 122-a second end; 123-photosensitive area; 13-a planar layer; 2-a light emitting device layer; 21-a light-emitting unit; 22-pixel definition layer; 23-an anode; 3-a color filter layer; 31-a shielding layer; 32-a filter unit; 4-an encapsulation layer; 5-barrier.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For better understanding of the present application, the below-screen supporting structural member and the display device according to the embodiments of the present application will be described in detail with reference to fig. 1 to 7.
Referring to fig. 1 and fig. 2, an embodiment of the present application provides a display panel, which has a plurality of first sub-pixels distributed in an array and a plurality of second sub-pixels distributed among the first sub-pixels, and the display panel includes an array substrate 1, a light emitting device layer 2 and a color filter layer 3, wherein the array substrate 1 has a first pixel circuit and a second pixel circuit, and the second pixel circuit includes a transistor 11 and a chromaticity detecting element electrically connected to each other; the light emitting device layer 2 is arranged on the array substrate 1 in a stacked manner, and the light emitting device layer 2 comprises a plurality of light emitting units 21; the color filter layer 3 is stacked on the side of the light-emitting device layer 2 opposite to the array substrate 1, the color filter layer 3 comprises a shielding layer 31 with a plurality of openings and a plurality of filter units 32, and the filter units 32 are correspondingly arranged in the openings; the chromaticity detecting element includes a light sensing area 123, the light sensing area 123 is disposed corresponding to the opening, and the display panel has a detecting mode in which the ambient light is incident to the light sensing area 123 from the light filtering unit 32 and the light emitting unit 21.
In the display panel provided by the present application, the color filter layer 3 includes a shielding layer 31 having a plurality of openings and a filtering unit 32 disposed in the openings, the openings and the filtering unit 32 in the openings correspond to the light emitting units 21 of the second sub-pixels one by one, a color detecting element is integrated in a second pixel circuit for controlling the second sub-pixels, the color detecting element includes a photosensitive area 123, the photosensitive area 123 is disposed corresponding to the openings, so that the photosensitive area 123, the light emitting units 21, the openings and the filtering unit 32 all correspond to each other, when the display panel is in a detection mode, the light emitting units 21 do not emit light but transmit light, the color detecting element is in a working state, ambient light is received by the photosensitive area 123 of the color detecting element after passing through the filtering unit 32 and the light emitting units 21 in sequence, wherein each color detecting element only detects the light intensity of one color light filtered by the filtering unit 32, and the current is converted into the current with corresponding magnitude, and different chromaticity detection elements respectively detect the light intensity of the light with three colors forming the ambient light, thereby realizing the chromaticity detection of the external ambient light; in the display panel that this application provided, the cooperation through filtering unit 32 and chromaticity detecting element has realized the chromaticity detection to external environment light, adopt and integrate chromaticity detecting element in the inside design of array substrate 1, can reduce the penetrating rete quantity of ambient light and thickness on the one hand, improve the sensitivity that chromaticity detecting element detected, on the other hand, compare with prior art and can reduce display panel's whole thickness, thereby realize the detection to ambient light under the prerequisite that does not influence the display panel performance.
The application provides a display panel, can judge the influence of ambient light to display effect through carrying out the colourity detection to ambient light, so that take the compensation means to compensate display effect, the display panel that provides in this application not only can detect the ambient light when shooing, compensate to display picture in order to take the compensation means, thereby make the user obtain more real image and video etc, and can also be when the user is in different environment, detect the influence of current ambient light to display effect, so that carry out corresponding compensation to picture display effect, avoid the influence of environment to display effect, like at ruddiness, yellow light, cloudy day, highlight, evening, early morning etc. in different environment can adjust picture display in real time, in order to reach optimal display effect, improve user experience.
There are various ways to integrate the chromaticity detection element in the array substrate 1:
in one possible embodiment, as shown in fig. 2 and 3, the array substrate 1 includes a transistor device layer for forming the transistor 11, the transistor device layer includes a semiconductor layer 111, and the chromaticity detecting element is disposed on the same layer as the semiconductor layer 111.
In the above embodiment, the chromaticity detection element and the semiconductor layer 111 are provided in the same layer, so that the thickness of the array substrate 1 is not increased, which contributes to the reduction in thickness of the display panel.
In the above embodiment, the chromaticity detecting element is the photodiode 12, the photodiode 12 includes the first end 121, the second end 122 and the photosensitive area 123 between the first end 121 and the second end 122, and the first end 121, the photosensitive area 123 and the second end 122 of the photodiode 12 are disposed in the same layer as the semiconductor layer 111.
In the above embodiment, the photodiode 12 is arranged in the horizontal direction, that is, the first end 121, the photosensitive region 123 and the second end 122 of the photodiode 12 are all arranged on the same layer as the semiconductor layer 111, the photodiode 12 arranged in the horizontal direction has a simple structure, which can reduce the process difficulty and the cost, and the photosensitive region 123 has a large area, so that the detection is more accurate, and the integration of the photodiode 12 can be realized without increasing the overall thickness of the array substrate 1.
Specifically, the photodiode 12 arranged transversely can be prepared by using a low-temperature polysilicon technology, an intrinsic semiconductor layer of the photodiode 12 can be prepared by using a-Si, and the intrinsic semiconductor layer and the semiconductor layer 111 are arranged in the same layer; implanting one end of the intrinsic semiconductor layer 111 with P ions to form a first end 121 having a P-a-Si structure; the other end of the intrinsic semiconductor layer is implanted with B ions to form the second end 122 having an N-a-Si structure, thereby forming the photodiode 12 disposed in a lateral direction.
When the photodiode 12 is provided in the same layer as the semiconductor layer 111, as shown in fig. 2, one way of controlling the photodiode 12 is to provide transistors 11 dedicated to controlling the photodiode 12, in which the number of transistors 11 in the second pixel circuit is greater than the number of transistors 11 in the first pixel circuit, and the more transistors are transistors 11 for controlling the photodiode 12, the transistors 11 for controlling the photodiode 12 are connected to the photodiode 12 and insulated from the other transistors 11, and the transistors 11 for controlling the photodiode 12 are provided separately, so that the control of the second sub-pixel and the photodiode 12 is completely separated, and the driving manner of the circuit is simplified.
Since the control of the second sub-pixel and the photodiode 12 is completely separated in the above embodiment, the display panel can start the detection mode while displaying, when the display panel displays, part of the transistors 11 in the second pixel circuit control the light emitting unit 21 to emit light, and the light emitted by the light emitting unit passes through the filtering unit, so that the color of the emitted light is cleaner, meanwhile, the display panel is in the detection mode, the transistors in the second pixel circuit for controlling the photodiode 12 control the photodiode 12 to operate, the light emitting unit 21 not only emits light but also transmits light, and the ambient light is received by the photosensitive area 123 of the photodiode 12 after passing through the filtering unit 32 and the light emitting unit 21 in sequence, wherein each photodiode 12 only detects the light intensity of the light of one color and converts the light intensity into a current with a corresponding magnitude, in this embodiment, the light intensity of the light detected by the photodiode 12 includes the light intensity of the light emitted by the light emitting unit and the light intensity of the light filtered by the ambient light filtering unit, and the light intensity part of the light emitted by the light emitting unit is removed during compensation, and then compensation is performed; the display panel starts the detection mode while displaying, can compensate the displayed picture at any time, and has better compensation effect.
In the above embodiment, the transistor 11 for controlling the photodiode 12 is disposed in the same layer as the transistor 11 for controlling the second sub-pixel and electrically connected to the photodiode 12, and the transistor 11 for controlling the photodiode 12 and the transistor 11 for controlling the second sub-pixel are simultaneously fabricated during the fabrication process, so that the fabrication process and the fabrication time can be saved.
Another way to control the photodiode 12 is: as shown in fig. 3, the photodiode 12 and the second sub-pixel share the transistor 11, in this embodiment, the number of the transistors 11 in the first pixel circuit and the second pixel circuit is the same, and the second sub-pixel and the photodiode 12 multiplex the transistors 11 in the second pixel circuit, which can reduce the number of devices, avoid adding devices to increase the routing and increase the sensing capacitance between the routing, and can also reduce the complexity of the routing and reduce the signal crosstalk between the routing.
In the above embodiment, the photodiode 12 is electrically connected to the transistor 11 for controlling the second sub-pixel, specifically, one end of the photodiode 12 may be electrically connected to the source or the drain of the transistor 11, and the second sub-pixel and the photodiode 12 are driven in a time-sharing manner, the display panel may start a detection mode before displaying, when the display panel is in the detection mode, the transistor in the second pixel circuit controls the photodiode 12 to operate, the light emitting unit 21 does not emit light but transmits light, the ambient light passes through the filtering unit 32 and the light emitting unit 21 in sequence and is received by the photosensitive area 123 of the photodiode 12, wherein each photodiode 12 only detects the light intensity of light of one color and converts the light intensity into a current of a corresponding magnitude, and different chromaticity detecting elements respectively detect the light intensities of three colors of light constituting the ambient light, therefore, the chromaticity of the external environment light is detected, and then when the display panel displays, as shown in fig. 4, the transistor in the second pixel circuit controls the light emitting unit to operate, and the light emitted by the light emitting unit 21 is emitted through the filtering unit 32, so that the color of the emitted light is purer.
In another possible embodiment, as shown in fig. 5, 6 and 7, the array substrate 1 includes a transistor device layer for forming the transistor 11 and a flat layer 13 formed on a side of the transistor device layer facing the light emitting device layer 2, and the chromaticity detecting element is disposed between the transistor device layer and the flat layer 13.
In the above embodiments, a manner is provided in which the chromaticity detection element is disposed between the transistor device layer and the planarization layer 13, which can further reduce the number and total thickness of the film layers penetrated by the ambient light before reaching the chromaticity detection element, thereby improving the detection effect of the chromaticity detection element, and meanwhile, the thickness of the planarization layer 13 is adjusted so that the overall thickness of the display panel after the chromaticity detection element is integrated is not increased.
Specifically, the chromaticity detecting element is a photodiode 12, the photodiode 12 includes a first end 121, a second end 122, and a light sensing area 123 between the first end 121 and the second end 122, the first end 121 of the photodiode 12 is located on a side of the transistor device layer facing the planarization layer 13, the light sensing area 123 is located on a side of the first end 121 facing away from the transistor device layer, and the second end 122 is located on a side of the light sensing area 123 facing away from the first end 121.
In the above embodiment, the photodiode 12 is disposed in a longitudinal direction, that is, the first end 121, the light sensing region 123 and the second end 122 of the photodiode 12 are stacked between the transistor device layer and the planarization layer 13.
Specifically, in the fabrication of the photodiode 12 device, an a-Si layer is first fabricated and then implanted with P ions to form the first end 121 having a P-a-Si structure; then preparing an a-Si layer on the first end 121 as an intrinsic semiconductor layer 111 of the photodiode 12; then, an a-Si layer is prepared on the intrinsic semiconductor layer 111 and the prepared a-Si layer is implanted with B ions to form the second terminal 122 having an N-a-Si structure, thereby forming the photodiode 12 disposed in the vertical direction.
When the photodiode 12 is disposed between the transistor device layer and the planarization layer 13, as shown in fig. 5, one way of controlling the photodiode 12 is to provide transistors 11 exclusively for controlling the photodiode 12, in which the number of transistors 11 in the second pixel circuit is greater than the number of transistors 11 in the first pixel circuit, and the more are the transistors 11 for controlling the photodiode 12, and the transistors 11 for controlling the photodiode 12 are disposed in the same layer as the other transistors 11, and are connected to the photodiode 12, insulated from the other transistors 11, and the transistors 11 for controlling the photodiode 12 are separately provided, so that the control of the second sub-pixel and the photodiode 12 are completely separated, thereby simplifying the driving manner of the circuit.
Since the control of the second sub-pixel and the photodiode 12 is completely separated in the above embodiment, the display panel can start the detection mode while displaying, when the display panel displays, part of the transistors 11 in the second pixel circuit control the light emitting unit 21 to emit light, and the light emitted by the light emitting unit passes through the filtering unit, so that the color of the emitted light is cleaner, meanwhile, the display panel is in the detection mode, the transistors in the second pixel circuit for controlling the photodiode 12 control the photodiode 12 to operate, the light emitting unit 21 not only emits light but also transmits light, and the ambient light is received by the photosensitive area 123 of the photodiode 12 after passing through the filtering unit 32 and the light emitting unit 21 in sequence, wherein each photodiode 12 only detects the light intensity of the light of one color and converts the light intensity into a current with a corresponding magnitude, in this embodiment, the light intensity of the light detected by the photodiode 12 includes the light intensity of the light emitted by the light emitting unit and the light intensity of the light filtered by the ambient light filtering unit, and the light intensity part of the light emitted by the light emitting unit is removed during compensation, and then compensation is performed; the display panel starts the detection mode while displaying, can compensate the displayed picture at any time, and has better compensation effect.
In the above embodiment, the transistor 11 for controlling the photodiode 12 is disposed in the same layer as the transistor 11 for controlling the second sub-pixel and electrically connected to the photodiode 12, and the transistor 11 for controlling the photodiode 12 and the transistor 11 for controlling the second sub-pixel are simultaneously fabricated during the fabrication process, thereby saving the fabrication process and the fabrication time.
Another way to control the photodiode 12 is: as shown in fig. 6 and 7, the photodiode 12 and the second sub-pixel share the transistor 11, in this embodiment, the number of the transistors 11 in the first pixel circuit and the second pixel circuit is the same, and the second sub-pixel and the photodiode 12 share the transistor 11 in the second pixel circuit, which can reduce the number of devices, avoid increasing the number of wires due to the increase of devices, increase the sensing capacitance between the wires, reduce the complexity of the wires, and reduce the signal crosstalk.
Since the photodiode 12 and the second subpixel share the transistor 11, the second subpixel and the photodiode 12 need to be driven in a time-sharing manner, the display panel can start a detection mode before displaying, when the display panel is in the detection mode, the transistor in the second pixel circuit controls the photodiode 12 to operate, the light-emitting unit 21 does not emit light and transmits light at this time, the ambient light is received by the photosensitive region 123 of the photodiode 12 after passing through the light-filtering unit 32 and the light-emitting unit 21 in sequence, wherein each photodiode 12 only detects the light intensity of light of one color and converts the light intensity into current of a corresponding magnitude, different chromaticity detection elements respectively detect the light intensities of three colors constituting the ambient light, thereby realizing the chromaticity detection of the ambient light, and then when the display panel displays, as shown in fig. 4, the transistor in the second pixel circuit controls the light-emitting unit to operate, the light emitted from the light emitting unit 21 is emitted through the filter unit 32, so that the emitted light is more pure in color.
In the above-described embodiment, the photodiode 12 is electrically connected to the transistor 11 for controlling the second sub-pixel, specifically, as shown in fig. 6, one end of the photodiode 12 may be electrically connected to the source or drain of the transistor 11, or, as shown in fig. 7, the light emitting device layer 2 includes the anode 23, the pixel defining layer 22 disposed on the anode 23, the pixel defining layer 22 is formed with the pixel defining layer opening corresponding to the anode 23, the light emitting unit 21 is disposed in the pixel defining layer opening, when the photodiode 12 shares the transistor 11 with the second sub-pixel, one end of the photodiode 12 may be electrically connected to the anode 23 of the light emitting unit 21, the wiring may be saved when the electrical connection is made using the photodiode 12 disposed in the vertical direction, since the photodiode 12 disposed in the vertical direction is disposed between the transistor device layer and the planarization layer 13, when one end of the photodiode 12 is electrically connected to the source or drain of the transistor 11, the photodiode 12 may directly cover the source or the drain of the transistor 11, and when one end of the photodiode 12 is electrically connected to the anode 23 of the light emitting unit 21, one end of the photodiode 12 may be electrically connected to one end of the photodiode 12 through a via hole formed in the planarization layer 13 at the time of preparing the anode 23.
The barrier 5 positioned at two sides of the opening of the pixel defining layer is also formed at one side of the pixel defining layer 23 in the light emitting device layer 2, which is far away from the array substrate 1, and is used for preventing the light emitting units 1 in the openings of the adjacent pixel defining layer from overflowing the openings of the pixel defining layer and simultaneously preventing the adjacent light emitting units 1 from color cross, and the encapsulation layer 4 is also formed at one side of the barrier 5, which is far away from the light emitting device layer 2, and is used for encapsulating the light emitting device layer and preventing water vapor from entering to influence the light emitting of the light emitting device layer.
Specifically, the light emitting device layer 2 includes light emitting cells 21 of a plurality of colors, and each opening of the shielding layer 31 corresponds to one light emitting cell 21, or each opening of the shielding layer 31 corresponds to a plurality of light emitting cells 21 of the same color.
In a possible embodiment, the light emitting device layer 2 includes a red light emitting unit 21 for emitting red light, a green light emitting unit 21 for emitting green light, and a blue light emitting unit 21 for emitting blue light, and the color filter layer 3 includes a shielding layer 31 having openings and a filter unit 32 located in the openings, where the shielding layer 31 may be a black matrix, each opening of the shielding layer 31 may correspond to one light emitting unit 21 or to a plurality of light emitting units 21 of the same color, and the filter unit 32 in each opening is the same as the color of the light emitting unit 21 corresponding to the opening, that is, each filter unit 32 covers one light emitting unit 21 or covers a plurality of light emitting units 21 of the same color, and the color of light that can be filtered by each filter unit 32 is the same as the color of light emitted by the light emitting unit 21 covered by the filter unit 32.
In other possible embodiments, the light emitting device layer 2 includes, but is not limited to, three color light emitting units 21 of red, green and blue, and when the light emitting units 21 of three or more colors are included, each of the filter units 32 can filter light with the same color as the light emitting unit 21 covered by the filter unit 32.
Specifically, each opening corresponds to one photosensitive region 123, or a portion of the opening corresponding to the light emitting unit 21 of each color corresponds one-to-one to the photosensitive region 123.
In one possible embodiment, each opening corresponds to one of the photosensitive regions 123, so that the light entering the display panel from each opening is detected by the chromaticity detection element.
In another possible embodiment, only some of the openings are correspondingly provided with the photosensitive regions 123, and the light-emitting units 21 respectively corresponding to the openings at least include the red light-emitting unit 21, the green light-emitting unit 21, and the blue light-emitting unit 21, so as to detect the content of the red, green, and blue light rays in the ambient light, so as to compensate the display effect of the display panel.
The application also provides a display device which comprises any one of the display panels provided in the technical scheme.
This display device can detect ambient light, obtain the red among the ambient light, green, the content of blue composition, so that take compensation means to compensate display effect, thereby prevent that the colour of external environment light from leading to the fact the influence to display effect, be arranged in the chromaticity detection component and the colored filter layer 3 integration in display panel of the content of red, green, blue composition in the detection ambient light among this display device, can compensate display effect when not sacrificing display panel thickness, performance such as luminousness, make display effect more press close to real effect, prevent to receive the influence of external environment light.
Above-mentioned display device can be cell-phone, electronic equipment such as panel computer, the chroma detection component of integration inside display panel can detect red in the ambient light, green, the content of blue composition, so that compensate display effect according to the detected data, prevent that ambient light from causing the influence to display effect, make display effect distortion etc. when display device is provided with the camera, still can compensate the effect of making a video recording of shooing, make the picture more be close actual by the shooting object.
The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the embodiments disclosed in the present application, and these modifications or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A display panel having a plurality of first sub-pixels distributed in an array and a second sub-pixel distributed between the plurality of first sub-pixels, the display panel comprising:
an array substrate having a first pixel circuit and a second pixel circuit including a transistor and a chromaticity detection element electrically connected to each other;
a light emitting device layer stacked on the array substrate, the light emitting device layer including a plurality of light emitting cells;
the color filter layer is stacked on one side, opposite to the array substrate, of the light-emitting device layer and comprises a shielding layer with a plurality of openings and a plurality of filtering units, and the filtering units are correspondingly arranged in the openings;
the chromaticity detection element comprises a photosensitive area, the photosensitive area is arranged corresponding to the opening, the display panel is provided with a detection mode, and the ambient light is incident to the photosensitive area through the light filtering unit and the light emitting unit in the detection mode.
2. The display panel according to claim 1, wherein the array substrate includes a transistor device layer for forming a transistor therein, the transistor device layer includes a semiconductor layer, and the chromaticity detection element is disposed on the same layer as the semiconductor layer.
3. The display panel of claim 2, wherein the chrominance detection element is a photodiode, the photodiode including a first end, a second end, and a photosensitive region between the first end and the second end, the first end, the photosensitive region, and the second end being disposed in the same layer as the semiconductor layer.
4. The display panel according to claim 1, wherein the array substrate includes a transistor device layer for forming a transistor and a planarization layer formed on a side of the transistor device layer facing the light emitting device layer, and wherein the chromaticity detection element is disposed between the transistor device layer and the planarization layer.
5. The display panel of claim 4, wherein the chrominance detection element is a photodiode including a first end, a second end, and a light sensing region between the first end and the second end, the first end of the photodiode being located on a side of the transistor device layer facing the planarization layer, the light sensing region being located on a side of the first end facing away from the transistor device layer, the second end being located on a side of the light sensing region facing away from the first end.
6. The display panel according to any one of claims 1 to 5, wherein the first pixel circuit and the second pixel circuit have the same number of transistors, and wherein the second subpixel and the chromaticity detecting element multiplex the transistors in the second pixel circuit.
7. The display panel according to any one of claims 1 to 5, wherein the number of transistors in the second pixel circuit is larger than the number of transistors in the first pixel circuit, and wherein a transistor for controlling the chromaticity detecting element is insulated from the other transistors.
8. The display panel according to claim 1, wherein the light emitting device layer comprises a plurality of light emitting cells of different colors, and each opening of the shielding layer corresponds to one light emitting cell, or each opening of the shielding layer corresponds to a plurality of light emitting cells of the same color.
9. The display panel according to claim 8, wherein each opening corresponds to one of the photosensitive regions, or wherein a portion of the opening corresponding to the light emitting unit of each color corresponds to one of the photosensitive regions.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN202011391151.6A CN112542089A (en) | 2020-12-02 | 2020-12-02 | Display panel and display device |
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| CN202011391151.6A CN112542089A (en) | 2020-12-02 | 2020-12-02 | Display panel and display device |
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