CN110767716B

CN110767716B - Display panel and display device

Info

Publication number: CN110767716B
Application number: CN201910363138.0A
Authority: CN
Inventors: 刘如胜; 谢峰; 黄智明; 王光辉; 范俊; 秦旭; 常苗; 张露
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2023-05-02
Anticipated expiration: 2039-04-30
Also published as: CN110767716A

Abstract

The present invention relates to a display panel and a display device. The display panel includes: a transparent display area and a non-transparent display area; the non-transparent display area comprises first OLED pixels arranged in an array manner; the first OLED pixel includes at least one color of first OLED subpixel; the transparent display area comprises second OLED pixels which are arranged in an array manner; the second OLED pixel includes at least one color of second OLED subpixels; and an auxiliary film layer is arranged on any side of at least part of the second OLED sub-pixels, and the auxiliary film layer is used for improving the spectral color purity of the light emitted by the second OLED sub-pixels so as to enable the light emitted by the second OLED sub-pixels with the same color to be basically consistent with the light emitted by the first OLED sub-pixels. According to the embodiment of the invention, the luminous spectrum of the transparent display area and the luminous spectrum of the non-transparent display area are basically consistent, the display effect of the display panel is more uniform, and the display effect of the display panel is improved.

Description

Display panel and display device

Technical Field

The invention relates to the technical field of OLED display equipment, in particular to a display panel and a display device.

Background

With the rapid development of display devices, users have increasingly high demands on screen ratios. Because the top of the screen needs to be provided with the camera, the sensor, the receiver and other elements, a part of area is usually reserved on the top of the screen in the related art for installing the elements, for example, the 'Liu' area of the iphoneX of the apple phone, which affects the overall consistency of the screen. Currently, full screen displays are receiving increasing attention from the industry.

Disclosure of Invention

The invention provides a display panel and a display device, which are used for solving the defects in the related art.

According to a first aspect of an embodiment of the present invention, there is provided a display panel including: a transparent display area and a non-transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array manner; the first OLED pixel includes at least one color of first OLED subpixel;

the transparent display area comprises second OLED pixels which are arranged in an array mode; the second OLED pixel includes at least one color of second OLED subpixels; and an auxiliary film layer is arranged on any side of at least part of the second OLED sub-pixels and is used for improving the spectral color purity of the light emitted by the second OLED sub-pixels so as to enable the light emitted by the second OLED sub-pixels and the first OLED sub-pixels with the same color to be basically consistent.

In one embodiment, the auxiliary film layer may be a filter; the optical filter is positioned above the second OLED sub-pixel; the color of the filter above the second OLED sub-pixel with different colors is different, and the color of the filter is the same as the color of the second OLED sub-pixel below the filter.

Because the color of the filter above the second OLED sub-pixel is the same as the color of the second OLED sub-pixel, the filter above the second OLED sub-pixel only allows the light with the same color as the color of the second OLED sub-pixel to transmit, and inhibits the light with other colors from transmitting, so that the light spectrum of the second OLED sub-pixel can be corrected, and the light spectrum color purity of the second OLED sub-pixel can be improved.

In one embodiment, the display panel further comprises an encapsulation layer;

the packaging layer covers the second OLED sub-pixel, and the optical filter is located above the packaging layer.

Because the optical filter is positioned above the packaging layer, namely the optical filter is positioned outside the second OLED pixel, the preparation process can be simplified, and the feasibility is high.

In one embodiment, the auxiliary film layer may be a bandpass filter film system; the band-pass filter film is positioned above the second OLED pixel; the band-pass filter film is used for allowing light emitted by the second OLED sub-pixel with at least one color to pass through and prohibiting light with other colors from passing through.

The band-pass filter film system above the second OLED pixels allows light emitted by the second OLED sub-pixels with at least one color to pass through, and inhibits light with other colors from passing through, so that the spectrum of the light emitted by the second OLED sub-pixels with at least one color in the second OLED pixels can be corrected, and the spectral color purity of the light emitted by the second OLED pixels is further improved.

Preferably, the display panel further comprises an encapsulation layer;

the encapsulation layer covers the second OLED pixels, and the band-pass filter film is located above the encapsulation layer.

The band-pass filter film system is positioned above the packaging layer, namely the band-pass filter film system is positioned outside the second OLED pixel, so that the preparation process can be simplified, and the feasibility is high.

Preferably, the band-pass filter film system comprises a silicon oxide film, a silicon nitride film, a magnesium film and a lithium fluoride film.

The band-pass filter film system comprises a film prepared by various refractive index materials such as a silicon oxide film, a silicon nitride film, a magnesium film, a lithium fluoride film and the like, so that the thickness of the band-pass filter film system can be reduced, and further the obvious thickening of the thickness of the display panel is avoided.

In one embodiment, the auxiliary film layer may be a planarization layer located under the second OLED subpixel; the color of the planarization layer below the second OLED sub-pixel of the different color is different, and the color of the planarization layer is the same as the color of the light emitted by the second OLED sub-pixel located above the planarization layer.

The color of the planarization layer below the second OLED sub-pixel is the same as the color of the second OLED sub-pixel, the planarization layer only allows the light with the same color as the color of the second OLED sub-pixel to transmit, and the light with other colors is forbidden to transmit, so that clutter in the light emitted from the inside of the display panel to the second OLED sub-pixel can be filtered, and the spectral color purity of the light emitted by the second OLED sub-pixel is improved.

In one embodiment, the auxiliary film layer is a transparent pixel definition layer; each second OLED sub-pixel comprises an anode, a light emitting layer positioned on the anode and a cathode positioned on the light emitting layer; the transparent pixel definition layers are positioned on two sides of the light-emitting layer; the transparent pixel definition layers on both sides of the light emitting layer of the second OLED sub-pixel of different colors are different in color; the color of the transparent pixel defining layer on both sides of the light emitting layer of the second OLED subpixel is the same as the color of the light emitted by the second OLED subpixel.

The color of the transparent pixel definition layers at two sides of the light-emitting layer of the second OLED sub-pixel is the same as the color of the light emitted by the second OLED sub-pixel, so that the light with the same color as the light emitted by the second OLED sub-pixel can be allowed to pass through, and the light with other colors can be forbidden to pass through, therefore, the light-emitting intensity of the second OLED sub-pixel can be enhanced, and the spectral color purity of the light emitted by the second OLED sub-pixel can be improved.

In one embodiment, the auxiliary film layer may be a refractive index adjustable layer located under the second OLED subpixel; the index-adjustable layer is configured to coherently cancel light emitted downward by the second OLED subpixel with light reflected toward the second OLED subpixel.

Because the refractive index adjustable layer below the second OLED sub-pixel can enable light emitted downwards by the second OLED sub-pixel and light reflected towards the second OLED sub-pixel to be coherently cancelled, stray light of other colors except the color emitted by the second OLED sub-pixel can be restrained, and further the spectral color purity of the emitted light of the second OLED sub-pixel is improved.

According to a second aspect of an embodiment of the present invention, there is provided a display device including:

an equipment body having a device region;

the display panel;

the display panel is covered on the equipment body;

the device region is positioned below the transparent display region, and comprises a photosensitive device which transmits or collects light through the transparent display region;

preferably, the photosensitive device includes at least one of: the device comprises a camera, a light sensor and a light emitter;

preferably, at least part of the transparent display area is surrounded by the non-transparent display area.

In one embodiment, the auxiliary film layer is a refractive index adjustable layer; the display device further comprises a control module, wherein the control module is used for receiving the spectrum information of the light emitted by each second OLED sub-pixel of the transparent display area collected by the photosensitive device, and adjusting the refractive index of the refractive index adjustable layer according to the spectrum information so as to enable the light emitted downwards by the second OLED sub-pixel and the light reflected towards the second OLED sub-pixel to be coherently cancelled.

The light-sensitive device is used for collecting the light-emitting spectrum information of each second OLED sub-pixel of the transparent display area, and the refractive index of the refractive index adjustable layer is adjusted according to the light-sensitive device so as to enable the light emitted downwards by the second OLED sub-pixel and the light reflected towards the second OLED sub-pixel to be coherently cancelled, so that the light-emitting spectrum color purity of the second OLED sub-pixel can be improved in real time.

According to the above embodiment, the display panel includes a transparent display area and a non-transparent display area, the non-transparent display area includes first OLED pixels arranged in an array, the first OLED pixels include first OLED sub-pixels of at least one color, the transparent display area includes second OLED pixels arranged in an array, and the second OLED pixels include second OLED sub-pixels of at least one color. The auxiliary film layer is arranged on any side of at least part of the second OLED sub-pixels and is used for improving the spectral color purity of the light emitted by the second OLED sub-pixels so that the light emitted by the second OLED sub-pixels and the light emitted by the first OLED sub-pixels with the same color are basically consistent, therefore, the light emitted by the transparent display area and the light emitted by the non-transparent display area are basically consistent, the display effect of the display panel is more uniform, and the display effect of the display panel is improved.

According to a third aspect of an embodiment of the present invention, there is provided a display device including a display panel and a color shift adjustment module;

the display panel includes: a transparent display area and a non-transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array manner; the first OLED pixel includes at least one color of first OLED subpixel; the transparent display area comprises second OLED pixels which are arranged in an array mode; the second OLED pixel includes at least one color of second OLED subpixels; the light-emitting wave band of the first sub-OLED pixel with the same color is a first wave band, the light-emitting wave band of the second OLED sub-pixel is a second wave band, a first peak value exists in the first wave band, the first peak value and the second peak value exist in the second wave band, and the intensity of the second peak value is the same as that of the first peak value;

the color shift adjusting module is used for acquiring a first wave band and a first peak value of the light emission of the first OLED sub-pixel, acquiring two peak values of a second wave band of the light emission of the second OLED sub-pixel, distinguishing the first peak value and the second peak value from the two peak values of the second wave band according to the wavelength of the first peak value, and performing gamma adjustment on the transparent display area so as to eliminate the color shift caused by the second peak value, so that the light emission spectrum of the second OLED sub-pixel and the first OLED sub-pixel with the same color is basically consistent.

According to the above embodiment, the display panel includes a transparent display area and a non-transparent display area, the non-transparent display area includes first OLED pixels arranged in an array, the first OLED pixels include first OLED sub-pixels of at least one color, the transparent display area includes second OLED pixels arranged in an array, and the second OLED pixels include second OLED sub-pixels of at least one color. For a first sub-OLED pixel and a second OLED sub-pixel with the same color, the light-emitting wave band of the first sub-OLED pixel is a first wave band, the light-emitting wave band of the second OLED sub-pixel is a second wave band, a first peak value exists in the first wave band, a first peak value and a second peak value exist in the second wave band, and the intensity of the second peak value is the same as that of the first peak value. The color shift adjusting module can be used for obtaining a first wave band and a first peak value of the light emission of the first OLED sub-pixel, obtaining two peak values of a second wave band of the light emission of the second OLED sub-pixel, distinguishing the first peak value and the second peak value from the two peak values of the second wave band according to the wavelength of the first peak value, and performing gamma adjustment on the transparent display area to eliminate the color shift caused by the second peak value, so that the light emission spectrum of the second OLED sub-pixel and the first OLED sub-pixel with the same color is basically consistent, therefore, the light emission spectrum of the transparent display area and the light emission spectrum of the non-transparent display area are basically consistent, the display effect of the display panel is more uniform, and the display effect of the display panel is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic spectrum diagram of light emission of a display panel in the related art;

fig. 2 is a schematic structural view of a display panel according to an embodiment of the present invention;

fig. 3 is a schematic structural view of another display panel according to an embodiment of the present invention;

fig. 4 is a schematic structural view of another display panel according to an embodiment of the present invention;

fig. 5 is a schematic structural view of another display panel according to an embodiment of the present invention;

fig. 6 is a schematic structural view of another display panel according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

In the related art, there is a display panel including a non-transparent display area and a transparent display area, and the transparent display area can realize a light transmission function as well as a display function. Wherein, below the transparent display area is provided with photosensitive elements such as a camera, a distance sensor and the like. Since the structures of the pixels in the transparent display area and the pixels in the non-transparent display area are different, the spectra of the light emitted by the pixels in the transparent display area and the pixels in the non-transparent display area are different, and the display effect of the display panel is affected.

The spectrum diagram of the light emission of the display panel can be seen in fig. 1. Wherein the horizontal axis is wavelength, the unit is nanometer, the vertical axis is normalized light intensity, the curves 11, 12, 13 are the spectral characteristic curves of the light emission of the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the non-transparent display area, respectively, and the

curves

14, 15, 16 are the spectral characteristic curves of the light emission of the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the transparent display area, respectively. In contrast, the spectral characteristic curves of the red sub-pixel, the green sub-pixel and the blue sub-pixel in the transparent display area have sub-peaks, that is, the red sub-pixel, the green sub-pixel and the blue sub-pixel in the transparent display area have clutters.

In view of the above technical problems, embodiments of the present invention provide a display panel and a display device, which can make the light emission spectrum of a transparent display area substantially consistent with that of a non-transparent display area, and the display effect of the display panel is more uniform, so as to improve the display effect of the display panel.

Fig. 2 is a display panel according to an embodiment of the present invention. As shown in fig. 2, the display panel 2 includes: a non-transparent display area 21 and a transparent display 22.

Wherein the non-transparent display area 21 comprises first OLED pixels (not shown) arranged in an array, the first OLED pixels comprising first OLED sub-pixels (not shown) of at least one color. The transparent display region 22 includes second OLED pixels (not shown) arranged in an array, and the second OLED pixels include second OLED subpixels (not shown) of at least one color. And an auxiliary film layer is arranged on any side of at least part of the second OLED sub-pixels, and the auxiliary film layer is used for improving the spectral color purity of the light emitted by the second OLED sub-pixels so as to enable the light emitted by the second OLED sub-pixels with the same color to be basically consistent with the light emitted by the first OLED sub-pixels. For example, an auxiliary film layer may be disposed on either side of each of the second OLED subpixels, or an auxiliary film layer may be disposed on either side of a portion of the second OLED subpixels.

In an embodiment, an auxiliary film layer is disposed on any side of at least a portion of the second OLED sub-pixels, where the auxiliary film layer is used to improve the spectral color purity of the light emitted by the second OLED sub-pixels, so that the light spectrum of the second OLED sub-pixels with the same color is substantially consistent with that of the light spectrum of the first OLED sub-pixels, and therefore, the light spectrum of the transparent display area is substantially consistent with that of the non-transparent display area, the display effect of the display panel is more uniform, and the display effect of the display panel is improved.

In one exemplary embodiment, the first OLED pixel may include a first OLED subpixel of three colors of red, green, and blue, and the second OLED pixel may include a second OLED subpixel of three colors of red, green, and blue, but is not limited thereto. The following description will be given by taking as an example a first OLED pixel including three colors of red, green and blue, and a second OLED pixel including three colors of red, green and blue.

The embodiment of the invention also provides a display panel. In this embodiment, the auxiliary film layer is an optical filter based on the embodiment shown in fig. 2. The filter is located above the second OLED subpixel. The color of the filter above the second OLED sub-pixel with different colors is different, and the color of the filter is the same as the color of the second OLED sub-pixel below the filter.

As shown in fig. 3, the second OLED pixel 31 may include a red second OLED subpixel 311, a green second OLED subpixel 312, and a blue second OLED subpixel 313. The second OLED pixels 31 are located on the driving circuit layer 32, and a transparent pixel defining layer 33 is disposed between the second OLED sub-pixels of different colors. The following is an example of a filter disposed above each of the second OLED subpixels.

As shown in fig. 3, a red filter 34 is disposed above the red second OLED subpixel 311, a green filter 35 is disposed above the green second OLED subpixel 312, and a blue filter 36 is disposed above the blue second OLED subpixel 313. The red filter 34 may allow only red light emitted from the red second OLED subpixel 311 to pass therethrough, and prohibit light of other colors, the green filter 35 may allow only green light emitted from the green second OLED subpixel 312 to pass therethrough, prohibit light of other colors, and the blue filter 36 may allow only blue light emitted from the blue second OLED subpixel 313 to pass therethrough, prohibit light of other colors. In this way, the red filter 34 can correct the emission spectrum of the red second OLED subpixel 311, the green filter 35 can correct the emission spectrum of the green second OLED subpixel 312, and the blue filter 36 can correct the emission spectrum of the blue second OLED subpixel 313.

In one embodiment, as shown in fig. 3, the display panel 2 may further include an encapsulation layer 37. The encapsulation layer 37 covers the

second OLED sub-pixels

311, 312, 313, and the

filters

34, 35, 36 are located above the encapsulation layer 37. Since the optical filter is located above the encapsulation layer, i.e., the optical filter is located outside the second OLED pixel 31, the manufacturing process can be simplified and the feasibility is high.

In one embodiment, the method for preparing the optical filter may be as follows: after the encapsulation process is completed, the

filters

34, 35, 36 may be prepared using a photolithography process. For example, the red filter 34 may be prepared first, then the green filter 35 may be prepared, and finally the blue filter 36 may be prepared. Of course, the order of preparation of the three color filters may be exchanged, and is not limited to the order of preparation provided in the embodiments of the present invention.

In this embodiment, since the color of the filter above the second OLED sub-pixel is the same as the color of the light emitted by the second OLED sub-pixel, the filter above the second OLED sub-pixel only allows light with the same color as the light emitted by the second OLED sub-pixel to pass through, and inhibits light with other colors from passing through, so that the spectrum of the light emitted by the second OLED sub-pixel can be corrected, and the spectral color purity of the light emitted by the second OLED sub-pixel can be improved.

The embodiment of the invention also provides a display panel. In this embodiment, the auxiliary film layer is a band-pass filter film system based on the embodiment shown in fig. 2. The band-pass filter film is positioned above the second OLED pixel; the band-pass filter film is used for allowing light emitted by the second OLED sub-pixel with at least one color to pass through and prohibiting light with other colors from passing through.

As shown in fig. 4, the second OLED pixel 31 may include a red second OLED subpixel 311, a green second OLED subpixel 312, and a blue second OLED subpixel 313. The band-pass filter film system disposed above each of the second OLED pixels 31 is exemplified below.

As shown in fig. 4, the band-pass filter film 41 may cover all of the second OLED pixels 31 in the transparent display area 22. The band-pass filter film system 41 can allow light emitted by the red second OLED subpixel 311, the green second OLED subpixel 312, and the blue second OLED subpixel 313 to pass therethrough, and inhibit light of other colors from passing therethrough. For example, the wavelength band of light emitted from the red second OLED subpixel 311 may be 620 to 720 nanometers, the wavelength band of light emitted from the green second OLED subpixel 312 may be 500 to 600 nanometers, and the wavelength band of light emitted from the blue second OLED subpixel 313 may be 450 to 490 nanometers. The band-pass filter film 41 allows light having wavelengths of 620 to 720 nm, 500 to 600 nm, and 450 to 490 nm to pass therethrough, while prohibiting light having other wavelengths from passing therethrough. Therefore, the spectrum of the second OLED sub-pixel of each color in the second OLED pixel can be corrected, and the spectral color purity of the second OLED pixel can be improved. Of course, the band-pass filter film system 41 may be a complete film layer, and may include several discrete film layers, which is not limited in this embodiment of the present invention.

In one embodiment, the band pass filter film system 41 may include a silicon oxide film, a silicon nitride film, a magnesium film, and a lithium fluoride film. The band-pass filter film system comprises a film prepared by various refractive index materials such as a silicon oxide film, a silicon nitride film, a magnesium film, a lithium fluoride film and the like, so that the thickness of the band-pass filter film system can be reduced, and further the obvious thickening of the thickness of the display panel is avoided. Of course, the materials of the band-pass filter film system 41 may not be limited to those listed in the embodiments of the present invention.

In one embodiment, as shown in fig. 4, the display panel 2 may further include an encapsulation layer 37. The encapsulation layer 37 covers the second OLED pixels 31, and the band-pass filter film 41 is located above the encapsulation layer 37. The band-pass filter film system is positioned above the packaging layer, namely the band-pass filter film system is positioned outside the second OLED pixel, so that the preparation process can be simplified, and the feasibility is high.

In this embodiment, the band-pass filter film system above the second OLED pixels allows light emitted by the second OLED sub-pixels of at least one color in the second OLED pixels to pass therethrough, and inhibits light of other colors from passing therethrough, so that the spectrum of light emitted by the second OLED sub-pixels of at least one color in the second OLED pixels can be corrected, thereby improving the spectral color purity of light emitted by the second OLED pixels.

The embodiment of the invention also provides a display panel. In this embodiment, on the basis of the embodiment shown in fig. 2, the auxiliary film layer is a planarization layer, and the planarization layer is located below the second OLED subpixel; the color of the planarization layer below the second OLED sub-pixel of the different color is different, and the color of the planarization layer is the same as the color of the light emitted by the second OLED sub-pixel located above the planarization layer.

In this embodiment, the color of the planarization layer under each second OLED subpixel is the same as the color of the light emitted by the second OLED subpixel. As shown in fig. 5, the planarization layer 52 under the anode 51 of the second OLED subpixel is a colored planarization layer, and the planarization layer 53 not under the anode 51 of the second OLED subpixel is an uncolored planarization layer. The color of the planarization layer 52 is the same as the color of the light emitted by the second OLED subpixel located over the planarization layer 52.

For example, the color of the planarization layer 52 under the anode of the red second OLED subpixel is the same as the color of the light emitted by the red second OLED subpixel, the color of the planarization layer 52 under the anode of the green second OLED subpixel is the same as the color of the light emitted by the green second OLED subpixel, and the color of the planarization layer 52 under the anode of the blue second OLED subpixel is the same as the color of the light emitted by the blue second OLED subpixel. In this way, the planarization layer under the anode of the second OLED subpixel of red may allow only the same color of light emitted by the second OLED subpixel of red to pass therethrough, inhibit the transmission of light of other colors, the planarization layer under the anode of the second OLED subpixel of green may allow only the same color of light emitted by the second OLED subpixel of green to pass therethrough, inhibit the transmission of light of other colors, and the planarization layer under the anode of the second OLED subpixel of blue may allow only the same color of light emitted by the second OLED subpixel of blue to pass therethrough, inhibit the transmission of light of other colors.

In this embodiment, the color of the planarization layer below the second OLED subpixel is the same as the color of the light emitted by the second OLED subpixel, and the planarization layer only allows light with the same color as the light emitted by the second OLED subpixel to pass through, so that light with other colors is inhibited from passing through, and therefore, clutter in the light emitted from the interior of the display panel to the second OLED subpixel can be filtered out, and the spectral color purity of the light emitted by the second OLED subpixel is improved.

The embodiment of the invention also provides a display panel. In this embodiment, on the basis of the embodiment shown in fig. 2, the auxiliary film layer is a transparent pixel defining layer, and each second OLED subpixel includes an anode, a light emitting layer on the anode, and a cathode on the light emitting layer. The transparent pixel defining layers are positioned at two sides of the light emitting layer, the transparent pixel defining layers at two sides of the light emitting layer of the second OLED sub-pixel with different colors are different in color, and the color of the transparent pixel defining layers at two sides of the light emitting layer of the second OLED sub-pixel is the same as the color of the light emitted by the second OLED sub-pixel.

In this embodiment, the second OLED pixel may include a red second OLED subpixel, a green second OLED subpixel, and a blue second OLED subpixel. The color of the transparent pixel definition layers at both sides of the light emitting layer of the red second OLED sub-pixel is red, the color of the transparent pixel definition layers at both sides of the light emitting layer of the green second OLED sub-pixel is green, and the color of the transparent pixel definition layers at both sides of the light emitting layer of the blue second OLED sub-pixel is blue. The red transparent pixel definition layer can allow light with the same color as the second OLED sub-pixel of red to transmit, inhibit light with other colors from transmitting, improve light intensity of the second OLED sub-pixel of green to transmit, and inhibit light with other colors from transmitting, and the blue transparent pixel definition layer can allow light with the same color as the second OLED sub-pixel of blue to transmit, inhibit light with other colors from transmitting, and improve light intensity of the second OLED sub-pixel of blue to transmit.

In this embodiment, since the color of the transparent pixel defining layer at both sides of the light emitting layer of the second OLED sub-pixel is the same as the color of the light emitted by the second OLED sub-pixel, the light with the same color as the light emitted by the second OLED sub-pixel can be allowed to pass through, and the light with other colors can be inhibited from passing through, so that the intensity of the light emitted by the second OLED sub-pixel can be enhanced, thereby improving the spectral color purity of the light emitted by the second OLED sub-pixel.

The embodiment of the invention also provides a display panel. In this embodiment, based on the embodiment shown in fig. 2, the auxiliary film layer is a refractive index adjustable layer, and the refractive index adjustable layer is located below the second OLED subpixel; the index-of-refraction adjustable layer is used to coherently cancel light emitted downward by the second OLED subpixel with light reflected toward the second OLED subpixel.

In this embodiment, a refractive index adjustable layer is provided under each second OLED subpixel. As shown in fig. 6, a refractive index adjustable layer 61 is provided under the anode 51 of the second OLED subpixel. The refractive index adjustable layer 61 is in the same layer as the uncolored planarization layer 53. For example, the index-of-refraction adjustable layer below the red second OLED subpixel may coherently cancel light emitted downward by the red second OLED subpixel with light reflected toward the red second OLED subpixel, thereby eliminating stray light from the display panel that is directed toward the red second OLED subpixel. The refractive index adjustable layer below the green second OLED sub-pixel can enable light emitted downwards by the green second OLED sub-pixel to be coherently cancelled with light reflected towards the green second OLED sub-pixel, so that stray light emitted towards the green second OLED sub-pixel inside the display panel is eliminated.

In this embodiment, the refractive index adjustable layer below the second OLED subpixel can make the light emitted downward by the second OLED subpixel and the light reflected toward the second OLED subpixel coherently cancel, so that stray light of other colors except the color emitted by the second OLED subpixel can be suppressed, thereby improving the spectral color purity of the emitted light of the second OLED subpixel.

In this embodiment, the refractive index adjustable layer may include a first plate, a refractive material layer, and a second plate. The refractive material layer is positioned between the first polar plate and the second polar plate. The first polar plate and the second polar plate are both connected with the power supply. The voltage between the first polar plate and the second polar plate in the refractive index adjustable layer can be adjusted by adjusting the output voltage of the power supply, so that the refractive index of the refractive material layer is adjusted, and light emitted downwards by the second OLED sub-pixel and light reflected towards the second OLED sub-pixel are coherently cancelled.

The embodiment of the invention also provides a display device. The display device includes: the device body and the display panel in any of the above embodiments.

Wherein the device body has a device region. The display panel is covered on the device body. The device area is positioned below the transparent display area, and the device area comprises a photosensitive device which transmits or collects light through the transparent display area.

Preferably, the photosensitive device includes at least one of: camera, light sensor, light transmitter.

In the embodiment of the invention, the auxiliary film layer is arranged on any side of at least part of the second OLED sub-pixels and is used for improving the spectral color purity of the light emitted by the second OLED sub-pixels so as to enable the light emitted by the second OLED sub-pixels and the light emitted by the first OLED sub-pixels with the same color to be basically consistent, therefore, the light emitted spectrum of the transparent display area and the light emitted by the non-transparent display area can be basically consistent, the display effect of the display panel is more uniform, and the display effect of the display panel is improved.

The embodiment of the invention also provides a display device. In this embodiment, the auxiliary film layer is a refractive index adjustable layer; the display device further comprises a control module, wherein the control module is used for receiving the spectrum information of the light emitted by each second OLED sub-pixel of the transparent display area, which is collected by the photosensitive device, and adjusting the refractive index of the refractive index adjustable layer according to the spectrum information so as to enable the light emitted downwards by the second OLED sub-pixel and the light reflected towards the second OLED sub-pixel to be coherently cancelled.

The embodiment of the invention also provides a display device. The display device comprises a display panel and a color deviation adjusting module. As shown in fig. 2, the display panel 2 includes: the transparent display area 22 is not transparent display area 21. The non-transparent display area 21 includes first OLED pixels arranged in an array, and the first OLED pixels include first OLED subpixels of at least one color. The transparent display region 22 includes second OLED pixels arranged in an array, and the second OLED pixels include second OLED subpixels of at least one color. The light-emitting wave band of the first OLED sub-pixel with the same color is a first wave band, the light-emitting wave band of the second OLED sub-pixel is a second wave band, a first peak value exists in the first wave band, a first peak value and a second peak value exist in the second wave band, and the intensity of the second peak value is the same as that of the first peak value.

The color shift adjusting module is used for acquiring a first wave band and a first peak value of the light emission of the first OLED sub-pixel, acquiring two peak values of a second wave band of the light emission of the second OLED sub-pixel, distinguishing the first peak value and the second peak value from the two peak values of the second wave band according to the wavelength of the first peak value, and performing gamma adjustment on the transparent display area to eliminate the color shift caused by the second peak value so as to enable the light emission spectrum of the second OLED sub-pixel and the light emission spectrum of the first OLED sub-pixel of the same color to be basically consistent.

In this embodiment, for each color of the first OLED subpixel and the second OLED subpixel, the color shift adjustment module is configured to obtain a first wavelength band and a first peak value of light emission of the first OLED subpixel, obtain two peak values of a second wavelength band of light emission of the second OLED subpixel, distinguish the first peak value and the second peak value from the two peak values of the second wavelength band according to a wavelength of the first peak value, and perform gamma adjustment on the transparent display area to eliminate color shift caused by the second peak value, so that light emission spectrums of the second OLED subpixel and the first OLED subpixel of the same color are substantially consistent, and therefore, a light emission spectrum of the transparent display area is substantially consistent with a light emission spectrum of the non-transparent display area, a display effect of the display panel is more uniform, and a display effect of the display panel is improved.

It should be noted that, in the process of manufacturing the display panel, the thickness of each second OLED subpixel or the thickness of the planarization layer under each second OLED subpixel may be adjusted so that the intensity of the second peak is the same as the intensity of the first peak, so that all the second OLED subpixels uniformly generate color shift for eliminating the color shift through gamma adjustment.

Note that, the display device in this embodiment may be: electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator and any other products or components with display function.

It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may be present. In addition, it will be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intervening layer or element may also be present. Like reference numerals refer to like elements throughout.

In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A display panel, comprising: a transparent display area and a non-transparent display area; the non-transparent display area comprises first OLED pixels which are arranged in an array manner; the first OLED pixel includes at least one color of first OLED subpixel;

the transparent display area comprises second OLED pixels which are arranged in an array mode; the second OLED pixel includes at least one color of second OLED subpixels; an auxiliary film layer is arranged on any side of at least part of the second OLED sub-pixels, and the auxiliary film layer is used for improving the spectral color purity of the light emitted by the second OLED sub-pixels so as to enable the light emitted by the second OLED sub-pixels and the first OLED sub-pixels with the same color to be basically consistent; the auxiliary film layer is a refractive index adjustable layer, and the refractive index adjustable layer is positioned below the second OLED sub-pixel; the index-adjustable layer is configured to coherently cancel light emitted downward by the second OLED subpixel with light reflected toward the second OLED subpixel.

2. A display device, comprising:

an equipment body having a device region;

the display panel of claim 1;

the display panel is covered on the equipment body;

the device region is positioned below the transparent display region, and the device region comprises a photosensitive device which transmits or collects light through the transparent display region.

3. The display device of claim 2, wherein the photosensitive means comprises at least one of: camera, light sensor, light transmitter.

4. The display device of claim 2, wherein at least a portion of the transparent display area is surrounded by a non-transparent display area.

5. The display device according to claim 2, wherein the auxiliary film layer is a refractive index adjustable layer; the display device further comprises a control module, wherein the control module is used for receiving the spectrum information of the light emitted by each second OLED sub-pixel of the transparent display area, which is acquired by the photosensitive device, and adjusting the refractive index of the refractive index adjustable layer according to the spectrum information so as to enable the light emitted downwards by the second OLED sub-pixel to be coherently cancelled with the light reflected towards the second OLED sub-pixel.

6. A display device is characterized by comprising a display panel and a color deviation adjusting module;