CN110323246B - Display panel, display device and driving method of display device - Google Patents
Display panel, display device and driving method of display device Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/1443—Devices controlled by radiation with at least one potential jump or surface barrier
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/1446—Devices controlled by radiation in a repetitive configuration
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- H—ELECTRICITY
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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Abstract
The embodiment of the invention discloses a display panel, a display device and a driving method of the display device. The display panel includes: a substrate; a plurality of first light emitting devices on the substrate; the optical sensing layer is positioned on one side, far away from the substrate, of the first light-emitting devices; the optical sensing layer includes a plurality of optical sensors whose orthogonal projections on the substrate overlap with an orthogonal projection of the first light emitting device on the substrate. Compared with the prior art, the embodiment of the invention realizes the real-time detection of the wavelength of the light-emitting device, the control module can obtain the color cast condition of the display panel according to the wavelength of the light-emitting device, and the color cast can be compensated in real time by combining with a corresponding control strategy, so that the color cast phenomenon of the display panel can be improved, and the display image quality of the display panel is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel, a display device and a driving method of the display device.
Background
With the continuous development of display technology, the application range of display panels is wider and wider, and the requirements of people on the display panels are higher and higher. In particular, the display quality of the display panel is always one of the important indicators for the quality of the display panel for consumers and panel manufacturers. However, the conventional display panel has a color shift problem, which affects improvement of display image quality of the display panel.
Disclosure of Invention
The embodiment of the invention provides a display panel, a display device and a driving method of the display device, which are used for improving the color cast of the display panel and improving the display image quality of the display panel.
In order to achieve the technical purpose, the embodiment of the invention provides the following technical scheme:
a display panel, comprising: a substrate;
a plurality of first light emitting devices on the substrate;
the optical sensing layer is positioned on one side, far away from the substrate, of the first light-emitting devices; the optical sensing layer includes a plurality of optical sensors whose orthogonal projections on the substrate overlap with an orthogonal projection of the first light emitting device on the substrate.
As can be seen from the foregoing technical solutions, in the embodiments of the present invention, the optical sensing layer is disposed on a side of the plurality of first light emitting devices away from the substrate, and orthogonal projections of the optical sensors of the optical sensing layer on the substrate overlap orthogonal projections of the first light emitting devices on the substrate, that is, the optical sensing layer is disposed on the display panel to detect wavelengths of the first light emitting devices. Since the electrical properties of the first light emitting device are close to and the same as those of other light emitting devices on the display panel, the wavelength of the first light emitting device may represent the wavelength of the light emitting device for display. Compared with the prior art, the embodiment of the invention realizes the real-time detection of the wavelength of the light-emitting device, the control module can obtain the color cast condition of the display panel according to the wavelength of the light-emitting device, and the color cast can be compensated in real time by combining with a corresponding control strategy, so that the color cast phenomenon of the display panel can be improved, and the display image quality of the display panel is improved.
Further, the display panel further includes: a plurality of second light emitting devices on the same side of the substrate as the first light emitting devices; the substrate comprises a plurality of data lines, a plurality of scanning lines and a plurality of pixel circuits connected with the data lines and the scanning lines; the pixel circuits are respectively connected with the corresponding first light-emitting device and the second light-emitting device; at least part of the pixel circuits connected with the second light-emitting devices and at least part of the pixel circuits connected with the first light-emitting devices are connected to the same data line, or at least part of the pixel circuits connected with the second light-emitting devices and at least part of the pixel circuits connected with the first light-emitting devices are connected to the same scanning line.
According to the embodiment of the invention, the first light-emitting device is arranged for carrying out wavelength detection, the second light-emitting device is also arranged, the second light-emitting device can be used for displaying images, and an optical sensor is not required to be arranged on the second light-emitting device, so that the light-emitting rate of the second light-emitting device is not influenced by the arrangement of the optical sensor. In addition, in the embodiment of the invention, at least part of the pixel circuits connected with the second light-emitting devices and at least part of the pixel circuits connected with the first light-emitting devices are connected to the same data line, namely, the first light-emitting devices and the second light-emitting devices share the data line, so that the data line and the data driving circuit do not need to be additionally arranged for the first light-emitting devices, and the manufacturing cost and the control difficulty of the display panel are favorably reduced. Furthermore, the pixel circuit connected with the first light-emitting device and the pixel circuit connected with the second light-emitting device are both connected to the same scanning driving circuit, so that the first light-emitting device and the second light-emitting device can adopt the same driving mode, the difference between the first light-emitting device and the second light-emitting device is further reduced, and the authenticity of the light-emitting wavelength of the first light-emitting device for representing the light-emitting wavelength of the second light-emitting device is improved.
Further, the substrate includes a display area and a non-display area; orthogonal projections of the plurality of first light emitting devices on the substrate are located in the non-display area, and orthogonal projections of the plurality of second light emitting devices on the substrate are located in the display area; and the arrangement modes of the plurality of first light-emitting devices and the plurality of second light-emitting devices are the same, which is beneficial to improving the uniformity of the display of the screen body. This is because, in the process of driving the display panel to display, each time one pixel circuit is added to the scanning line and the data line, a load is added. If the number of the pixel circuits connected to one scan line or one data line is not equal, the loads on the scan lines or the data lines are different during the display driving process of the display panel, and the display uniformity of the display panel is poor. If the arrangement mode of the first light-emitting devices and the second light-emitting devices is the same, the number of the pixel circuits connected to each scanning line and each data line is the same, that is, the loads are the same, so that the display uniformity of the display panel is improved. In addition, in the preparation process of the display panel, the first light-emitting device and the second light-emitting device can use the same mask plate, and further, the mask plate does not need to be separately prepared for the first light-emitting device, so that the manufacturing cost is favorably reduced.
Further, the display panel further includes a plurality of third light emitting devices that do not emit light;
the substrate comprises a non-display area, and orthogonal projections of the plurality of first light-emitting devices and the plurality of third light-emitting devices on the substrate are positioned in the non-display area;
the light emitting colors of the plurality of first light emitting devices comprise at least two types, at least part of the first light emitting devices with the same color are arranged adjacently, and the areas where the plurality of first light emitting devices with the same color and arranged adjacently form a wavelength detection area; one said optical sensor corresponding to one said wavelength detection zone; at least a portion of the third light emitting device is located between adjacent wavelength detection regions. According to the embodiment of the invention, on one hand, the distance between the adjacent edges of the two adjacent wavelength detection areas is increased, so that the light received by the optical sensor is the light emitted by the light emitting device with the same color, and the light emitting devices with other colors are far away from the light emitting device, so that the light emitted by the light emitting devices with other colors is greatly reduced to be received by the light emitting devices with other colors, the wavelength detection precision is improved, the compensation precision is improved, and the color cast of the display panel is further improved. On the other hand, the arrangement mode of the first light emitting device and the arrangement mode of the third light emitting device in the non-display area are set to be the same as the arrangement mode of the second light emitting device in the display area, so that the number of the pixel circuits connected to each scanning line and each data line is the same, namely, the loads are the same, and the display uniformity of the display panel is improved.
Further, the display panel further comprises a light shielding layer located on one side of the third light emitting device far away from the substrate, and an orthogonal projection of the third light emitting device on the substrate is located in an orthogonal projection of the light shielding layer on the substrate. The embodiment of the invention is arranged in such a way, the detection result of the optical sensor can be prevented from being influenced after external light enters the display panel, and the light detected by the optical sensor is only the light emitted by the first light-emitting device, so that the accuracy of the detection result of the optical sensor is ensured.
Furthermore, the light shielding layer comprises a plurality of grooves, the optical sensor is located in the grooves, namely the thickness of the optical sensing layer and the thickness of the light shielding layer are combined, the film thickness of the display panel is reduced, and the display panel is light and thin.
Further, the substrate includes at least one row of first pixel circuit rows and at least one row of second pixel circuit rows; the first pixel circuit row and the second pixel circuit row include a plurality of the pixel circuits, the number of the pixel circuits in the first pixel circuit row in one row being equal to the number of the pixel circuits in the second pixel circuit row in one row; the pixel circuits in the second pixel circuit row are connected with the second light-emitting devices in a one-to-one correspondence manner; the number of the second light-emitting devices corresponding to one row of the second pixel circuit row is larger than that of the second light-emitting devices corresponding to one row of the first pixel circuit row; each of the first light emitting devices is connected to the pixel circuits in one of the first pixel circuit rows. According to the embodiment of the invention, on one hand, the number of the pixel circuits in the first pixel circuit row and the second pixel circuit row is equal, which is beneficial to setting the same load on the scanning line and the data line, thereby being beneficial to improving the display uniformity of the display panel; on the other hand, the pixel circuits in part of the first pixel circuit rows are not connected with the first light emitting devices, which is equivalent to increasing the distance between two adjacent first light emitting devices, thereby being beneficial to avoiding crosstalk of light between two adjacent first light emitting devices.
Furthermore, the colors of the plurality of first light emitting devices include at least two colors, at least some of the first light emitting devices with the same color are adjacently arranged, and the plurality of first light emitting devices with the same color and adjacently arranged form a wavelength detection area; the orthogonal projection of the optical sensor on the substrate is located within the orthogonal projection of the wavelength detection zone on the substrate. The embodiment of the invention is arranged in such a way, the light received by the optical sensor is the light emitted by the light emitting device with the same color, and the light emitting devices with other colors are far away from the light emitting device, so that the emitted light is greatly reduced to be received by the light emitting device, and the crosstalk of light between two adjacent wavelength detection areas is avoided.
Accordingly, the present invention also provides a display device comprising: a display panel according to any of the embodiments of the present invention;
the control module is electrically connected with the optical sensors and used for generating color temperature signals under preset gray scales according to brightness signals of the optical sensors, determining color temperature deviation under the preset gray scales according to the preset gray scales and the color temperature signals and compensating the preset gray scales according to the color temperature deviation.
Accordingly, the present invention further provides a driving method of a display device, which is applicable to the display device according to any embodiment of the present invention, the driving method of the display device including:
the control module receives the brightness of the first light-emitting device sensed by the optical sensor and generates a brightness signal;
the control module generates a color temperature signal under a preset gray scale according to the brightness signal, determines color temperature deviation under the preset gray scale according to the preset gray scale and the color temperature signal, and compensates the preset gray scale according to the color temperature deviation.
In the embodiment of the invention, the optical sensing layer is arranged on the side, away from the substrate, of the plurality of first light-emitting devices, and the orthogonal projection of the optical sensor of the optical sensing layer on the substrate is overlapped with the orthogonal projection of the first light-emitting devices on the substrate, that is, the optical sensing layer is arranged on the display panel to detect the wavelength of the first light-emitting devices. Since the electrical properties of the first light emitting device are close to and the same as those of other light emitting devices on the display panel, the wavelength of the first light emitting device may represent the wavelength of the light emitting device for display. Compared with the prior art, the embodiment of the invention realizes the real-time detection of the wavelength of the light-emitting device, the control module can obtain the color cast condition of the display panel according to the wavelength of the light-emitting device, and the color cast can be compensated in real time by combining with a corresponding control strategy, so that the color cast phenomenon of the display panel can be improved, and the display image quality of the display panel is improved.
Drawings
Fig. 1 is a schematic waveform diagram of a light emitting wavelength of an LED device varying with a driving voltage according to an embodiment of the present invention;
fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG. 2;
fig. 4 is a schematic top view of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view taken along line B-B in FIG. 4;
fig. 6 is a schematic top view illustrating a display panel according to another embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view taken along line C-C of FIG. 6;
fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken along line D-D of FIG. 8;
fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view taken along line E-E of FIG. 10;
fig. 12 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the invention;
fig. 13 is a schematic cross-sectional view illustrating another display panel according to an embodiment of the present invention;
FIG. 14 is a schematic cross-sectional view taken along line F-F in FIG. 13;
fig. 15 is a schematic top view illustrating a display panel according to another embodiment of the present invention;
fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 17 is a flowchart illustrating a driving method of a display device according to an embodiment of the invention;
FIG. 18 is a waveform diagram illustrating gray scale compensation according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background, the conventional display panel has a problem of color shift. The following describes technical problems in the prior art by taking a Micro Light Emitting Diode (Micro-LED/μ LED) display panel as an example. The Micro-LED display panel comprises a driving back plate and an LED device, the LED device belongs to an active light-emitting device, and the driving back plate provides a driving signal for the LED device so as to drive the LED device to emit light.
Fig. 1 is a schematic waveform diagram of a light emitting wavelength of an LED device according to an embodiment of the present invention varying with a driving voltage. Referring to fig. 1, a curve 101 is a wavelength distribution curve of a blue LED device when a driving voltage is 2.5V; curve 102 is the wavelength distribution curve of the blue LED device when the driving voltage is 3V; curve 103 is the wavelength distribution curve of the blue LED device when the driving voltage is 3.5V; a curve 104 is a wavelength distribution curve of the blue LED device when the driving voltage is 4V; curve 105 is the wavelength distribution curve of the blue LED device when the driving voltage is 4.5V; curve 106 is the wavelength distribution curve of the blue LED device at a driving voltage of 5V. The inventor researches and discovers that the light emitting wavelength of the LED device can be shifted under different driving voltages. Further, as the driving voltage increases, the driving current also increases, the brightness of the LED increases, the light emitting wavelength of the LED device becomes shorter, i.e. the light emitting color of the LED device exhibits a blue shift phenomenon. And the blue shift phenomenon of the LED device is more serious as the brightness is increased (i.e., in the case of high gray scale display). Therefore, the color temperature blue shift phenomenon occurs in the conventional display panel under the high gray scale, thereby causing the color cast problem and affecting the display image quality of the display panel.
In view of this, an embodiment of the present invention provides a display panel. The technical scheme provided by the embodiment of the invention is suitable for the display panel with the color cast phenomenon and is suitable for the Micro-LED display panel.
Fig. 2 is a schematic top view of a display panel according to an embodiment of the present invention, and fig. 3 is a schematic cross-sectional view taken along a-a in fig. 2. Referring to fig. 2 and 3, the display panel includes: a substrate 100, a plurality of first light emitting devices 210, and an optical sensing layer 300. A plurality of first light emitting devices 210 are positioned on the substrate 100. The optical sensing layer 300 is located on a side of the plurality of first light emitting devices 210 away from the substrate 100; the optical sensing layer 300 includes a plurality of optical sensors 310, and an orthogonal projection of the optical sensors 310 on the substrate 100 overlaps an orthogonal projection of the first light emitting device 210 on the substrate 100.
The substrate 100 may be, for example, a driving backplane including a pixel circuit, which may be, for example, a CMOS driving circuit, and which may drive the first light emitting device 210 to emit light. The optical sensing layer 300 is located on a side of the plurality of first light emitting devices 210 away from the substrate 100, i.e., the optical sensing layer 300 is located on a light emitting side of the first light emitting devices 210. The orthogonal projection of the optical sensor 310 on the substrate 100 overlaps the orthogonal projection of the first light emitting device 210 on the substrate 100, and specifically, the orthogonal projection of the optical sensor 310 on the substrate 100 overlaps the orthogonal projection of the light emitting layer of the first light emitting device 210 on the substrate 100. The optical sensor 310 in the optical sensing layer 300 may detect the wavelength of the first light emitting device 210 when the first light emitting device 210 emits light, and the color shift of the first light emitting device 210 may be obtained by the wavelength of the first light emitting device 210.
In practical applications, the first light emitting device 210 may be set only for wavelength detection, or the first light emitting device 210 may be set for both wavelength detection and image display, as required. If the first light emitting device 210 is used only for wavelength detection, its wavelength can also represent the wavelength of the light emitting device used for display on the display panel. Referring to fig. 2, exemplarily, fig. 2 shows that the substrate 100 includes a display region 110 and a non-display region 120, the first light emitting device 210 is only used for wavelength detection, is located in a lower border of the non-display region 120, and is further provided with a light emitting device for display in the display region 110. Since the first light emitting device 210 is fabricated under the same fabrication conditions as the light emitting device for display in the display region 110, electrical properties of the two are relatively close. And, since the first light emitting device 210 is in the same operating environment as the light emitting device for display in the display area 110, a difference in light emission of the light emitting device due to an uncertain factor such as the operating environment can be excluded. Therefore, the first light emitting device 210 generates a similar wavelength to the light emitting device for display in the display region 110 under the same gray scale control.
The embodiment of the invention arranges the optical sensing layer 300 on the side of the plurality of first light emitting devices 210 far away from the substrate 100, and the orthogonal projection of the optical sensor 310 of the optical sensing layer 300 on the substrate 100 overlaps with the orthogonal projection of the first light emitting devices 210 on the substrate 100, that is, the optical sensing layer 300 is arranged on the display panel to detect the wavelength of the first light emitting devices 210. Since the electrical properties of the first light emitting device 210 are close to and the same as those of other light emitting devices on the display panel, the wavelength of the first light emitting device 210 may represent the wavelength of the light emitting device for display. Compared with the prior art, the embodiment of the invention realizes the real-time detection of the wavelength of the light-emitting device, the optical sensor 310 can output the corresponding wavelength signal to the control module, the control module can obtain the color cast condition of the display panel according to the wavelength of the light-emitting device, and the color cast can be compensated in real time by combining with the corresponding control strategy, so that the color cast phenomenon of the display panel can be improved, and the display image quality of the display panel is improved.
With continued reference to fig. 2 and 3, optionally, the first light emitting device 210 includes at least one of a red light emitting device (R)211, a green light emitting device (G)212, and a blue light emitting device (B) 213. Preferably, the first light emitting device 210 includes three color light emitting devices of a red light emitting device 211, a green light emitting device 212, and a blue light emitting device 213, and this is advantageous in that the control module can calculate a color temperature deviation of the current display panel according to the wavelength of the red light emitting device 211, the wavelength of the green light emitting device 212, and the wavelength of the blue light emitting device 213, so as to compensate the display according to the color temperature deviation. Since the color temperature deviation is combined with the wavelengths of the three RGB colors, the actual display condition of the display panel can be better reflected, and therefore, the accuracy of color deviation compensation is improved by arranging the first light emitting device 210 to include the light emitting devices of the three colors of the red light emitting device 211, the green light emitting device 212, and the blue light emitting device 213, so that the color deviation phenomenon is further reduced, and the display image quality of the display panel is improved.
It should be noted that fig. 2 and fig. 3 exemplarily show an arrangement manner of the first light emitting device 210, and do not limit the present invention. There are various ways of disposing the first light emitting device 210 according to the embodiment of the present invention, and another ways of disposing the first light emitting device 210 will be described below.
Fig. 4 is a schematic top view of another display panel according to an embodiment of the present invention. Fig. 5 is a schematic cross-sectional view taken along B-B in fig. 4. Referring to fig. 4 and 5, optionally, the display panel further includes a plurality of second light emitting devices 220, and the plurality of second light emitting devices 220 are located on the same side of the substrate 100 as the first light emitting device 210. The substrate 100 includes a plurality of data lines 410, a plurality of scan lines 420, and a plurality of pixel circuits 430 connected to the data lines 410 and the scan lines 420; the pixel circuits 430 are connected to the corresponding first and second light emitting devices 210 and 220, respectively. The pixel circuit 430 to which at least a portion of the second light emitting device 220 is connected and the pixel circuit 430 to which at least a portion of the first light emitting device 210 is connected are connected to the same data line 410.
In the embodiment of the present invention, not only the first light emitting device 210 is provided for wavelength detection, but also the second light emitting device 220 is provided, the second light emitting device 220 can be used for displaying an image, and the optical sensor 310 does not need to be provided on the second light emitting device 220, so that the light emitting rate of the second light emitting device 220 is not affected by the arrangement of the optical sensor 310 in the embodiment of the present invention. And, the embodiment of the invention sets at least a portion of the pixel circuit 430 connected to the second light emitting device 220 and at least a portion of the pixel circuit 430 connected to the first light emitting device 210 to be connected to the same data line 410, then the first light emitting device 210 may be disposed on the upper frame or the lower frame of the display panel. That is, the first light emitting device 210 and the second light emitting device 220 share the data line 410, so that the data line 410 and the data driving circuit do not need to be additionally arranged for the first light emitting device 210, which is beneficial to reducing the manufacturing cost and the control difficulty of the display panel. Further, the pixel circuit 430 connected to the first light emitting device 210 and the pixel circuit 430 connected to the second light emitting device 220 are both connected to the same scan driving circuit, so that the first light emitting device 210 and the second light emitting device 220 can adopt the same driving mode, the difference between the first light emitting device 210 and the second light emitting device 220 is further reduced, and the reality of the light emitting wavelength of the first light emitting device 210 representing the light emitting wavelength of the second light emitting device 220 is improved.
Fig. 6 is a schematic top view of another display panel according to an embodiment of the present invention. Fig. 7 is a schematic sectional view taken along line C-C in fig. 6. Referring to fig. 6 and 7, alternatively, different from the foregoing embodiment, at least a portion of the pixel circuit 430 connected to the second light emitting device 220 and at least a portion of the pixel circuit 430 connected to the first light emitting device 210 are connected to the same scan line 420, and then the first light emitting device 210 may be disposed on the left frame or the right frame of the display panel, that is, the first light emitting device 210 and the second light emitting device 220 share the scan line 420, so that the scan line 420 and the scan driving circuit do not need to be additionally disposed for the first light emitting device 210, which is beneficial to reducing the manufacturing cost and the control difficulty of the display panel. Further, the pixel circuit 430 connected to the first light emitting device 210 and the pixel circuit 430 connected to the second light emitting device 220 are both connected to the same data driving circuit, so that the first light emitting device 210 and the second light emitting device 220 can adopt the same driving mode, the difference between the first light emitting device 210 and the second light emitting device 220 is further reduced, and the reality of representing the light emitting wavelength of the second light emitting device 220 by the light emitting wavelength of the first light emitting device 210 is improved.
Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 9 is a schematic structural diagram taken along a cross-section D-D in fig. 8. Referring to fig. 8 and 9, on the basis of the above embodiments, optionally, the substrate 100 includes a display area 110 and a non-display area 120; the orthogonal projection of the plurality of first light emitting devices 210 on the substrate 100 is positioned in the non-display area 120, and the orthogonal projection of the plurality of second light emitting devices 220 on the substrate 100 is positioned in the display area 110; and the plurality of first light emitting devices 210 and the plurality of second light emitting devices 220 are arranged in the same manner.
The embodiment of the invention limits the arrangement mode of the first light-emitting device 210 to be the same as that of the second light-emitting device 220, and is beneficial to improving the uniformity of screen body display. This is because, in the process of driving the display panel to display, each time one pixel circuit 430 is added to the scan line 420 and the data line 410, a load is added. If the number of the pixel circuits 430 connected to one scan line 420 or one data line 410 is not equal, the loads on the scan line 420 or the data line 410 are different during the display driving process of the display panel, and the display uniformity of the display panel is poor. Then, if the plurality of first light emitting devices 210 and the plurality of second light emitting devices 220 are arranged in the same manner, the number of the pixel circuits 430 connected to each of the scan lines 420 and each of the data lines 410 is the same, that is, the loads are the same, which is beneficial to improving the display uniformity of the display panel. In addition, in the preparation process of the display panel, the first light emitting device 210 and the second light emitting device 220 may use the same mask plate, and further, a separate mask plate does not need to be prepared for the first light emitting device 210, thereby being beneficial to reducing the manufacturing cost.
It should be noted that fig. 8 and 9 exemplarily show that the optical sensor 310 is disposed on a portion of the second light emitting device 220, and the invention is not limited thereto. In other embodiments, all the second light emitting devices 220 may be provided with the optical sensor 310, and in practical applications, the optical sensor may be set as needed.
Fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 11 is a schematic structural diagram taken along a section E-E in fig. 10. Referring to fig. 10 and 11, on the basis of the above embodiments, optionally, the display panel further includes a plurality of third light emitting devices 230, and the third light emitting devices 230 do not emit light. The orthogonal projections of the plurality of first light emitting devices 210 and the plurality of third light emitting devices 230 on the substrate 100 are both located in the non-display area 120. The light emitting colors of the plurality of first light emitting devices 210 include at least two, at least some of the first light emitting devices 210 having the same color are adjacently disposed, and the regions where the plurality of first light emitting devices 210 having the same color and being adjacently disposed form a wavelength detection region 201; one optical sensor 310 corresponds to one wavelength detection area 201; at least a portion of the third light emitting device 230 is positioned between adjacent wavelength detection regions 201.
It is exemplarily shown in fig. 10 and 11 that the light emission colors of the first light emitting device 210 include three kinds, a red light emitting device 211, a green light emitting device 212, and a blue light emitting device 213, respectively. The three red light emitting devices 211 are adjacently arranged to form a red wavelength detection area; three green light emitting devices 212 form a green wavelength detection region; three blue light emitting devices 213 are adjacently disposed to constitute a blue wavelength detection region. Between red wavelength detection zone and the green wavelength detection zone to and all be provided with third light emitting device 230 between green wavelength detection zone and the blue wavelength detection zone, red wavelength detection zone promptly, green wavelength detection zone and blue wavelength detection zone set up independently, be favorable to avoiding the wavelength detection error that crosstalk of different color lights brought.
In the embodiment of the present invention, the third light emitting device 230 is disposed between the adjacent wavelength detection regions 201, on one hand, the distance between the adjacent edges of the two adjacent wavelength detection regions 201 is increased, so that the light received by the optical sensor 310 is the light emitted by the light emitting device of the same color, and the light emitting devices of other colors are far away from the light emitting device, so that the light emitted by the light emitting devices of other colors is greatly reduced to be received by the light emitting devices of other colors, thereby facilitating the improvement of the accuracy of wavelength detection, further improving the compensation accuracy, and further improving the color shift of the display panel. On the other hand, the embodiment of the invention is advantageous to set the arrangement of the first light emitting device 210 and the third light emitting device 230 in the non-display area 120 to be the same as the arrangement of the second light emitting device 220 in the display area 110, so that the number of the pixel circuits 430 connected to each scanning line 420 and each data line 410 is the same, that is, the load is the same, and the display uniformity of the display panel is improved. In addition, in the embodiment of the present invention, a plurality of adjacent first light emitting devices 210 with the same color are disposed in one wavelength detection area 201, so that the optical sensor can receive more light, which is beneficial to improving the detection accuracy of the optical sensor.
With continued reference to fig. 11, based on the foregoing embodiments, optionally, the display panel further includes a light shielding layer 500 located on a side of the third light emitting device 230 away from the substrate 100, and an orthogonal projection of the third light emitting device 230 on the substrate 100 is located within an orthogonal projection of the light shielding layer 500 on the substrate 100. The light shielding layer 500 may be disposed in the same layer as the black matrix, for example, and serves to prevent external light from entering the optical sensor 310 and light from leaking out from the first light emitting device 210. The embodiment of the invention is arranged in such a way, so that the detection result of the optical sensor 310 can be prevented from being influenced after external light enters the display panel, and the light detected by the optical sensor 310 is only the light emitted by the first light-emitting device 210, thereby ensuring the accuracy of the detection result of the optical sensor 310.
Fig. 12 is a schematic cross-sectional view of another display panel according to an embodiment of the invention. Referring to fig. 12, on the basis of the foregoing embodiments, optionally, the light shielding layer 500 includes a plurality of grooves, and the optical sensor 310 is located in the groove, that is, the thickness of the optical sensing layer 300 and the thickness of the light shielding layer 500 are combined, so that the film thickness of the display panel is reduced, and the display panel is light and thin.
Fig. 13 is a schematic cross-sectional structure view of another display panel according to an embodiment of the disclosure, and fig. 14 is a schematic cross-sectional structure view along F-F in fig. 13. Referring to fig. 13 and 14, the substrate 100 optionally includes at least one first pixel circuit row 610 and at least one second pixel circuit row 620. The first pixel circuit row 610 and the second pixel circuit row 620 include a plurality of pixel circuits 430, and the number of pixel circuits 430 in the first pixel circuit row 610 is equal to the number of pixel circuits 430 in the second pixel circuit row 620; and the pixel circuits 430 in the second pixel circuit row 620 are connected to the second light emitting devices 220 in a one-to-one correspondence; the number of the second light emitting devices 220 corresponding to one row of the second pixel circuit row 620 is greater than the number of the second light emitting devices 220 corresponding to one row of the first pixel circuit row 610; each of the first light emitting devices 210 is connected to the pixel circuits 430 in one first pixel circuit row 610.
It is exemplarily shown in fig. 14 that the first pixel circuit row 610 and the second pixel circuit row 620 each include thirteen pixel circuits 430, thirteen pixel circuits 430 in the second pixel circuit row 620 correspond to the thirteen pixel circuits 430 one-to-one, and thirteen pixel circuits 430 in the first pixel circuit row 610 correspond to nine first light emitting devices 210, that is, four pixel circuits 430 are not connected to the first light emitting devices 210, and thus, when the second light emitting device 220 emits light, a position corresponding to the pixel circuit 430 not connected to the second light emitting device 220 does not emit light.
According to the embodiment of the invention, on one hand, the number of the pixel circuits 430 in the first pixel circuit row 610 is equal to that in the second pixel circuit row 620, which is beneficial to setting the loads on the scanning line 420 and the data line 410 to be the same, so that the display uniformity of the display panel is promoted; on the other hand, the pixel circuits 430 in the partial first pixel circuit row 610 are not connected to the first light emitting devices 210, which is equivalent to increasing the distance between two adjacent first light emitting devices 210, thereby being beneficial to avoiding crosstalk of light between two adjacent first light emitting devices 210.
Fig. 15 is a schematic top view of another display panel according to an embodiment of the present invention. Referring to fig. 15, optionally, the colors of the plurality of first light emitting devices 210 include at least two colors, at least some of the first light emitting devices 210 of the same color are adjacently disposed, and the plurality of first light emitting devices 210 of the same color and adjacently disposed form one wavelength detection area 201. The orthogonal projection of the optical sensor 310 on the substrate 100 is located within the orthogonal projection of the wavelength detection zone 201 on the substrate 100.
Fig. 15 exemplarily shows that the light emission colors of the first light emitting device 210 include three kinds, i.e., a red light emitting device 211, a green light emitting device 212, and a blue light emitting device 213. The four red light emitting devices 211 are adjacently arranged to form a red wavelength detection area; five green light emitting devices 212 form a green wavelength detection zone; the four blue light emitting devices 213 are adjacently disposed to constitute a blue wavelength detection region. The three optical sensors 310 are respectively located at intermediate positions of the red wavelength detection region, the green wavelength detection region, and the blue wavelength detection region.
In the embodiment of the present invention, the orthogonal projection of the optical sensor 310 on the substrate 100 is located in the orthogonal projection of the wavelength detection regions 201 on the substrate 100, which is beneficial to the light received by the optical sensor 310 being the light emitted by the light emitting devices of the same color, and the light emitting devices of other colors being far away from the light emitting devices, so that the emitted light is greatly reduced to be received by the light emitting devices, thereby being beneficial to avoiding crosstalk of light between two adjacent wavelength detection regions 201.
The embodiment of the invention also provides a display device. Fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present invention. Referring to fig. 16, the display device includes: a display panel 10 and a control module 20 as provided in any of the embodiments of the present invention. The control module 20 is electrically connected to the plurality of optical sensors, and the control module 20 is configured to generate a color temperature signal under a preset gray scale according to a wavelength signal of the optical sensor, determine a color temperature deviation under the preset gray scale according to the preset gray scale and the color temperature signal, and compensate the preset gray scale according to the color temperature deviation.
The control module 20 is a module for receiving and processing a wavelength signal to generate a display signal, the control module 20 includes a color temperature test center 11, a compensation control center 12 and a driving center 13, the color temperature test center 11 generates a color temperature signal under a preset gray scale according to the wavelength signal of the optical sensor, the compensation control center 12 determines a color temperature deviation under the preset gray scale according to the preset gray scale and the color temperature signal, and the driving center 13 compensates the preset gray scale according to the color temperature deviation. The preset gray scale is a gray scale signal used by the control module 20 to control the first light emitting device, and the preset gray scale is preferably a white gray scale. The color temperature signal under the preset gray scale is a signal obtained by calculation according to a wavelength signal of the first light emitting device detected actually after the first light emitting device emits light under the preset gray scale, and the wavelength signal of the first light emitting device preferably includes a red wavelength signal, a green wavelength signal and a blue wavelength signal, so that the color temperature of white light can be obtained. The color temperature deviation refers to a deviation of an actual color temperature of the first light emitting device from a color temperature at a preset gray level, and the deviation may be caused by a blue shift of a wavelength of the light emitting device at a high gray level. Compensating the preset gray scale means compensating the gray scale of the light emitting device to improve the color temperature deviation, for example, the color temperature blue shift under the high gray scale can compensate the color temperature blue shift phenomenon caused by the light emitting blue shift of the light emitting device by increasing the light emitting brightness of the red light emitting device and decreasing the light emitting intensities of the green light emitting device and the blue light emitting device, so as to realize the color temperature compensation and improve the color deviation of the display panel 10.
The embodiment of the present invention provides an optical sensing layer on the display panel 10, wherein the optical sensing layer is located on a side of the substrate away from the plurality of first light emitting devices, and an orthogonal projection of the optical sensor of the optical sensing layer on the substrate overlaps with an orthogonal projection of the first light emitting devices on the substrate, that is, the optical sensing layer is provided on the display panel to detect the wavelength of the first light emitting devices. Since the electrical properties of the first light emitting device are close to and the same as those of other light emitting devices on the display panel, the wavelength of the first light emitting device may represent the wavelength of the light emitting device for display. Compared with the prior art, the embodiment of the invention realizes the real-time detection of the wavelength of the light-emitting device, and realizes the color temperature compensation self-feedback by combining the control of the control module 20, thereby being beneficial to improving the color cast phenomenon of the display panel and improving the display image quality of the display panel 10.
With continued reference to fig. 16, on the basis of the above embodiments, the display device optionally further includes a scan driving circuit 30 and a data driving circuit 40. The scan driving circuit 30 receives the shift signal sent by the control module 20 and sends a scan signal to the scan lines of the display panel 10, and the data driving circuit 40 receives the gray scale signal sent by the control module 20 and sends a data signal to the data lines of the display panel 10, so as to drive the corresponding light emitting devices to emit light according to a preset gray scale.
It should be noted that, the control module 20 provided in the embodiment of the present invention has various setting forms, and may be set according to needs in practical applications. The control module 20 may be a driver IC that integrates a color temperature test center, a compensation control center, and a driving center, and the driver IC is disposed on a main board of the display device and electrically connected to the optical sensor through a flexible circuit board. Alternatively, the control module 20 may be two driver ICs, one driver IC is integrated with the compensation control center and the driving center, and the other driver IC is integrated with the color temperature test center.
The embodiment of the invention also provides a driving method of the display device, and the driving method is suitable for the display device provided by any embodiment of the invention. Fig. 17 is a flowchart illustrating a driving method of a display device according to an embodiment of the present invention. Referring to fig. 17, the driving method of the display device includes the steps of:
s110, the control module receives the wavelength of the first light-emitting device sensed by the optical sensor to generate a wavelength signal.
S120, the control module generates a color temperature signal under the preset gray scale according to the wavelength signal, determines color temperature deviation under the preset gray scale according to the preset gray scale and the color temperature signal, and compensates the preset gray scale according to the color temperature deviation.
The preset gray scale refers to a gray scale signal used by the control module to control the first light-emitting device, and the preset gray scale is preferably a white light gray scale. The color temperature signal under the preset gray scale is a signal obtained by calculation according to a wavelength signal of the first light emitting device detected actually after the first light emitting device emits light under the preset gray scale, and the wavelength signal of the first light emitting device preferably includes a red wavelength signal, a green wavelength signal and a blue wavelength signal, so that the color temperature of white light can be obtained. The color temperature deviation refers to a deviation of an actual color temperature of the first light emitting device from a color temperature at a preset gray level, and the deviation may be caused by a blue shift of a wavelength of the light emitting device at a high gray level. The compensation of the preset gray scale means that the color temperature deviation is improved by compensating the gray scale of the light emitting device. Fig. 18 is a schematic waveform diagram illustrating gray scale compensation according to an embodiment of the invention. Referring to fig. 18, a curve 701 is a relative luminance curve of the red light emitting device according to the predetermined gray scale, a curve 702 is a relative luminance curve of the green light emitting device according to the predetermined gray scale, and a curve 703 is a relative luminance curve of the blue light emitting device according to the predetermined gray scale. Specifically, under a high gray scale, the luminous brightness of the red light-emitting device is increased, and the luminous intensities of the green light-emitting device and the blue light-emitting device are decreased, so that the phenomenon of blue shift of color temperature caused by blue shift of light emitted by the light-emitting devices is compensated, color temperature compensation is realized, and color cast of the display panel is improved.
According to the embodiment of the invention, the control module receives the wavelength of the first light-emitting device sensed by the optical sensor to generate the wavelength signal, the color temperature signal under the preset gray scale is generated according to the wavelength signal, the color temperature deviation under the preset gray scale is determined according to the preset gray scale and the color temperature signal, the preset gray scale is compensated according to the color temperature deviation, the color temperature compensation self-feedback is realized, the color temperature is compensated in real time, the color deviation phenomenon of the display panel is effectively improved, and the display image quality of the display panel is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A display panel, comprising: a substrate;
a plurality of first light emitting devices on the substrate;
a plurality of second light emitting devices on the same side of the substrate as the first light emitting devices; the first light-emitting device is used for wavelength detection, and the second light-emitting device is used for displaying images;
the substrate comprises a plurality of data lines, a plurality of scanning lines and a plurality of pixel circuits connected with the data lines and the scanning lines; the pixel circuits are respectively connected with the corresponding first light-emitting device and the second light-emitting device; at least part of pixel circuits connected with the second light-emitting devices and at least part of pixel circuits connected with the first light-emitting devices are connected to the same data line, or at least part of pixel circuits connected with the second light-emitting devices and at least part of pixel circuits connected with the first light-emitting devices are connected to the same scanning line;
the optical sensing layer is positioned on one side, far away from the substrate, of the first light-emitting devices; the optical sensing layer includes a plurality of optical sensors whose orthogonal projections on the substrate overlap with an orthogonal projection of the first light emitting device on the substrate.
2. The display panel according to claim 1, wherein the substrate includes a display region and a non-display region; orthogonal projections of the plurality of first light emitting devices on the substrate are located in the non-display area, and orthogonal projections of the plurality of second light emitting devices on the substrate are located in the display area; and the arrangement mode of the plurality of first light-emitting devices is the same as that of the plurality of second light-emitting devices.
3. The display panel according to claim 1, further comprising a plurality of third light-emitting devices which do not emit light;
the substrate comprises a non-display area, and orthogonal projections of the plurality of first light-emitting devices and the plurality of third light-emitting devices on the substrate are positioned in the non-display area;
the light emitting colors of the plurality of first light emitting devices comprise at least two types, at least part of the first light emitting devices with the same color are arranged adjacently, and the areas where the plurality of first light emitting devices with the same color and arranged adjacently form a wavelength detection area; one said optical sensor corresponding to one said wavelength detection zone; at least a portion of the third light emitting device is located between adjacent wavelength detection regions.
4. The display panel according to claim 3, further comprising a light shielding layer on a side of the third light emitting device away from the substrate, wherein an orthogonal projection of the third light emitting device on the substrate is within an orthogonal projection of the light shielding layer on the substrate.
5. The display panel according to claim 4, wherein the light shielding layer comprises a plurality of grooves, and the optical sensor is located in the grooves.
6. The display panel according to claim 1, wherein the substrate includes at least one row of first pixel circuit rows and at least one row of second pixel circuit rows;
the first pixel circuit row and the second pixel circuit row include a plurality of the pixel circuits, the number of the pixel circuits in the first pixel circuit row in one row being equal to the number of the pixel circuits in the second pixel circuit row in one row; the pixel circuits in the second pixel circuit row are connected with the second light-emitting devices in a one-to-one correspondence manner; the number of the second light-emitting devices corresponding to one row of the second pixel circuit row is larger than that of the second light-emitting devices corresponding to one row of the first pixel circuit row; each of the first light emitting devices is connected to the pixel circuits in one of the first pixel circuit rows.
7. The display panel according to claim 1, wherein the colors of the plurality of first light emitting devices include at least two colors, the first light emitting devices of at least a part of the same color are adjacently disposed, and the plurality of first light emitting devices of the same color and adjacently disposed form one wavelength detection region;
the orthogonal projection of the optical sensor on the substrate is located within the orthogonal projection of the wavelength detection zone on the substrate.
8. A display device, comprising: the display panel of any one of claims 1-7;
the control module is electrically connected with the optical sensors and used for generating color temperature signals under preset gray scales according to brightness signals of the optical sensors, determining color temperature deviation under the preset gray scales according to the preset gray scales and the color temperature signals and compensating the preset gray scales according to the color temperature deviation.
9. A driving method of a display device is characterized in that the display device comprises a display panel and a control module; the display panel includes a substrate;
a plurality of first light emitting devices on the substrate;
a plurality of second light emitting devices on the same side of the substrate as the first light emitting devices; the first light-emitting device is used for wavelength detection, and the second light-emitting device is used for displaying images;
the substrate comprises a plurality of data lines, a plurality of scanning lines and a plurality of pixel circuits connected with the data lines and the scanning lines; the pixel circuits are respectively connected with the corresponding first light-emitting device and the second light-emitting device;
at least part of pixel circuits connected with the second light-emitting devices and at least part of pixel circuits connected with the first light-emitting devices are connected to the same data line, or at least part of pixel circuits connected with the second light-emitting devices and at least part of pixel circuits connected with the first light-emitting devices are connected to the same scanning line;
the optical sensing layer is positioned on one side, far away from the substrate, of the first light-emitting devices; the optical sensing layer comprises a plurality of optical sensors, orthogonal projections of the optical sensors on the substrate overlap with orthogonal projections of the first light emitting devices on the substrate;
the driving method of the display device includes:
the control module receives the brightness of the first light-emitting device sensed by the optical sensor and generates a brightness signal;
the control module generates a color temperature signal under a preset gray scale according to the brightness signal, determines color temperature deviation under the preset gray scale according to the preset gray scale and the color temperature signal, and compensates the preset gray scale according to the color temperature deviation.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150145417A (en) * | 2014-06-19 | 2015-12-30 | 엘지디스플레이 주식회사 | Organic light emitting display device and method of manufacturing the same |
| CN106887212A (en) * | 2017-03-28 | 2017-06-23 | 京东方科技集团股份有限公司 | A kind of OLED display and its brightness adjusting method |
| CN109378333A (en) * | 2018-10-19 | 2019-02-22 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN109523955A (en) * | 2019-01-03 | 2019-03-26 | 京东方科技集团股份有限公司 | Pixel compensation method and device, storage medium, display screen |
| CN109903733A (en) * | 2019-04-11 | 2019-06-18 | 京东方科技集团股份有限公司 | Display device and its driving method |
| CN110047906A (en) * | 2019-05-21 | 2019-07-23 | 京东方科技集团股份有限公司 | Display device, display panel and its manufacturing method based on clear photodiode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061014B (en) * | 2019-04-30 | 2021-06-08 | 武汉天马微电子有限公司 | Display panel and display device |
-
2019
- 2019-08-15 CN CN201910755517.4A patent/CN110323246B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150145417A (en) * | 2014-06-19 | 2015-12-30 | 엘지디스플레이 주식회사 | Organic light emitting display device and method of manufacturing the same |
| CN106887212A (en) * | 2017-03-28 | 2017-06-23 | 京东方科技集团股份有限公司 | A kind of OLED display and its brightness adjusting method |
| CN109378333A (en) * | 2018-10-19 | 2019-02-22 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN109523955A (en) * | 2019-01-03 | 2019-03-26 | 京东方科技集团股份有限公司 | Pixel compensation method and device, storage medium, display screen |
| CN109903733A (en) * | 2019-04-11 | 2019-06-18 | 京东方科技集团股份有限公司 | Display device and its driving method |
| CN110047906A (en) * | 2019-05-21 | 2019-07-23 | 京东方科技集团股份有限公司 | Display device, display panel and its manufacturing method based on clear photodiode |
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