CN110047900B - Display panel and electronic device - Google Patents
Display panel and electronic device Download PDFInfo
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- CN110047900B CN110047900B CN201910346497.5A CN201910346497A CN110047900B CN 110047900 B CN110047900 B CN 110047900B CN 201910346497 A CN201910346497 A CN 201910346497A CN 110047900 B CN110047900 B CN 110047900B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel and an electronic device. The display panel includes: a substrate; a thin-film transistor layer on the substrate; the light-emitting layer is positioned on the thin film transistor layer and comprises a plurality of pixel points; an encapsulation layer covering the light emitting layer; the polarizing layer is positioned on the packaging layer; wherein, the polarisation layer includes a plurality of polarisation stromatolites, a plurality of polarisation stromatolites with a plurality of pixel point one-to-one, each polarisation stromatolite includes: the polarizer at least comprises a first polarization direction and a second polarization direction; and the polarization control units are electrically connected with the corresponding polaroids and control the polarization directions of the polaroids. The display panel and the electronic equipment provided by the invention can realize three-dimensional display on the display panel and can flexibly switch between two-dimensional display and three-dimensional display.
Description
Technical Field
The present invention relates to the field of electronic display, and in particular, to a display panel and an electronic device.
Background
In order to meet the requirements of users for 3D display, 3D display needs to be implemented on a handheld smart device. The mainstream of the existing 3D display method is a polarization type 3D display. The polarized 3D display decomposes the original image using the principle that light has a "vibration direction". The image is divided into a vertical polarization plane and a horizontal polarization picture, and then two lenses of the 3D glasses are used for respectively collecting the polarization pictures with different polarization directions, so that the left eye and the right eye of a user receive two groups of different pictures. The brain of the user synthesizes the received two different polarized pictures into a stereoscopic image to realize 3D display.
The polarization type 3D is mainly applied to 3D cinema and 3D television. Realizing the polarized light type 3D display on the intelligent equipment with a small screen requires that the display screen of the intelligent equipment can realize the free switching between 2D and 3D. The prior art does not achieve this.
Disclosure of Invention
The invention provides a display panel and an electronic device, which can realize three-dimensional display on the display panel and can flexibly switch between two-dimensional display and three-dimensional display.
The present invention provides a display panel, comprising:
a substrate;
a thin-film transistor layer on the substrate;
the light-emitting layer is positioned on the thin film transistor layer and comprises a plurality of pixel points;
an encapsulation layer covering the light emitting layer;
the polarizing layer is positioned on the packaging layer; wherein the content of the first and second substances,
the polarisation layer includes a plurality of polarisation stromatolites, a plurality of polarisation stromatolites' thickness is the same, a plurality of polarisation stromatolites with a plurality of pixel point one-to-one, each polarisation stromatolite includes:
the polaroids at least comprise a first polarization direction and a second polarization direction, wherein the polaroids have different thicknesses, the thickness of the polaroid in the polarizing lamination layer corresponding to the red light pixel point is larger than that of the polaroid in the polarizing lamination layer corresponding to the green light pixel point, and the thickness of the polaroid in the polarizing lamination layer corresponding to the green light pixel point is larger than that of the polaroid in the polarizing lamination layer corresponding to the blue light pixel point;
the polarization control unit is electrically connected with the corresponding polaroid and controls the polarization direction of the polaroid;
the optical filter is arranged on the polarizer, and the color of light reserved by the optical filter is the same as the color of light emitted by the pixel points corresponding to the polarizing lamination;
the filling layer is positioned on the optical filter, the material forming the filling layer is transparent polymer, and the Young modulus of the transparent polymer is larger than that of the optical filter.
According to one aspect of the present invention, the first polarization direction and the second polarization direction of the polarizer are perpendicular.
According to one aspect of the present invention, the polarization control unit includes:
the first electrode and the second electrode are respectively positioned on two opposite surfaces of the polarizer;
and one end of the data wire is connected with the first electrode and the second electrode, and the other end of the data wire is connected with the polarization control voltage.
According to one aspect of the invention, the polarization control voltage comprises a first polarization voltage and a second polarization voltage; wherein the content of the first and second substances,
when the voltage at the two ends of the polaroid is the first polarization voltage, the polarization direction of the polaroid is the first polarization direction;
and when the voltage at the two ends of the polaroid is the second polarization voltage, the polarization direction of the polaroid is the second polarization direction.
According to one aspect of the present invention, when the polarization directions of adjacent pixels are the same, the picture displayed by the display panel is a two-dimensional picture; when the polarization directions of the adjacent pixel points are different, the picture displayed by the display panel is a three-dimensional picture.
According to one aspect of the present invention, the polarizing layer further includes a plurality of light shielding walls disposed at intervals from the polarizing stack.
According to one aspect of the invention, the material forming the polarizer is an electro-optic material, and the refractive index of the electro-optic material is related to the voltage value of two ends of the electro-optic material layer.
Correspondingly, the invention also provides an electronic device which comprises the display panel.
The invention replaces the color filter in the prior art with the combination of the color filter and the polarizing lamination. The polarizing lamination comprises a polarizer and a polarization control unit, wherein the polarizer at least comprises a first polarization direction and a second polarization direction. When the polarization directions of the adjacent pixel points are the same, the display panel realizes two-dimensional display; when the polarization directions of the adjacent pixel points are vertical, the display panel realizes three-dimensional display. The display panel can flexibly control the polarization directions of different pixel points through the polarization control unit, so that the two-dimensional display and the three-dimensional display can be flexibly switched.
Drawings
FIG. 1 is a schematic structural diagram of an OLED display panel in the prior art;
FIG. 2 is a schematic structural diagram of an OLED display panel in a first state according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the OLED display panel of FIG. 2 in a second state according to the present invention;
FIG. 4 is a schematic structural diagram of an OLED display panel 2D according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an OLED display panel in a 3D display mode according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an OLED display panel in another embodiment of the invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The prior art will first be briefly described. Referring to fig. 1, fig. 1 is a schematic structural diagram of an OLED display panel in the prior art. The related art display panel generally includes a substrate 10, a thin-film transistor layer 20, a light emitting layer 30, an encapsulation layer 40, a polarizing layer 50, a touch layer 60, and a cover plate 70. The light emitting layer 30 includes a plurality of pixel dots 32 and a pixel defining layer 34 for separating the plurality of pixel dots.
As shown in fig. 1, the polarization direction of the related art display panel is fixed. If three-dimensional display is to be realized, the display panel needs to be partitioned, and two different polarization directions are set. Such an arrangement would reduce the brightness of the screen by half during two-dimensional display, which would seriously affect the two-dimensional display quality of the small-sized display panel.
Accordingly, the present invention provides a display panel and an electronic apparatus capable of realizing three-dimensional display on the display panel and capable of flexibly switching between two-dimensional display and three-dimensional display.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of an OLED display panel in a first state according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of the OLED display panel in fig. 2 in a second state according to the present invention. The display panel of the invention includes a substrate 10, a thin film transistor layer 20, a light emitting layer 30, an encapsulation layer 40, a polarizing layer, a touch layer 60, and a cover plate 70.
The substrate 10 may be a rigid substrate, such as glass; but also flexible substrates such as polyimide. The thin film transistor layer 20 is located on the substrate 10 and includes a plurality of thin film transistors.
The light emitting layer 30 is located on the thin film transistor layer 20, the light emitting layer 30 includes a plurality of pixel points 32, and each pixel point 32 corresponds to at least one thin film transistor in the thin film transistor layer.
The encapsulation layer 40 covers the light emitting layer 30. In this embodiment, the encapsulation layer 40 is a thin film encapsulation structure, and the thin film encapsulation structure is a lamination structure composed of at least one organic thin film and at least one inorganic thin film.
A polarizing layer on the encapsulation layer 40. The polarisation layer includes a plurality of polarisation stromatolites, a plurality of polarisation stromatolites with a plurality of pixel 32 one-to-one, each polarisation stromatolite includes: the polarizer at least comprises a first polarization direction and a second polarization direction; and the polarization control units are electrically connected with the corresponding polaroids and control the polarization directions of the polaroids. In this embodiment, each polarization lamination further includes an optical filter, the optical filter is disposed on the polarizer, and the color of the light retained by the optical filter is the same as the color of the light emitted by the pixel point 32 corresponding to the polarization lamination.
Referring to fig. 2 and 3, fig. 2 and 3 are schematic views illustrating a partial structure of a display panel according to the present invention. Fig. 2 shows three pixel points 32 and three polarization stacks corresponding to the three pixel points 32, where the three pixel points 32 respectively emit red light, blue light, and green light to form a display unit with a minimum structure. The display panel includes a plurality of display units constituted by three pixels. In the present embodiment, each display unit has the same structure.
In this embodiment, the first polarizing stack includes a first polarizer 811 and a first filter 821, the second polarizing stack includes a second polarizer 812 and a second filter 822, and the third polarizing stack includes a third polarizer 813 and a third filter 823. The first polarizer 811, the second polarizer 812, and the third polarizer 813 each have a first polarization direction a and a second polarization direction B, which are perpendicular to each other. For example, an included angle between the first polarization direction a and the light emitting surface is 135 degrees, and an included angle between the light emitting surface and the second polarization direction B is 45 degrees. Referring to fig. 2 and 3, in fig. 2, the polarization direction of the pixel point in the display unit is a first polarization direction a, and in fig. 3, the polarization direction of the pixel point in the display unit is a second polarization direction B.
The polarization control unit in the present invention includes: the first electrode, the second electrode and the data line. The first electrode and the second electrode are respectively positioned on two opposite surfaces of the polaroid, one end of the data wiring is connected with the first electrode and the second electrode, and the other end of the data wiring is connected with the polarization control voltage. And the three groups of opposite surfaces of the polarizer, of which the two opposite surfaces parallel to the light-emitting surface have the largest area and the shortest distance, are used for arranging the first electrode and the second electrode, so that the surface areas of the first electrode and the second electrode are maximized, and a better control effect is obtained. The polarization control voltage includes a first polarization voltage and a second polarization voltage. And when the voltage at the two ends of the polaroid is the first polarization voltage, the polarization direction of the polaroid is the first polarization direction A. And when the voltage at the two ends of the polaroid is the second polarization voltage, the polarization direction of the polaroid is the second polarization direction B.
Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of an OLED display panel in a two-dimensional display mode according to an embodiment of the present invention, and fig. 5 is a schematic structural diagram of an OLED display panel in a three-dimensional display mode according to an embodiment of the present invention. Two adjacent pixel cells are shown in fig. 4 and 5, each pixel cell comprising three pixel dots 32, the three pixel dots 32 emitting red, blue and green light, respectively. As shown in fig. 4, when the polarization directions of the adjacent pixel units are the same, the display panel displays a two-dimensional picture. As shown in fig. 5, when the polarization directions of the adjacent pixel units are different, the display panel displays a three-dimensional picture. For example, the polarization direction of the three pixel points 32 in one of the pixel units is the first polarization direction a, i.e., the included angle between the light ray of the pixel point and the light exit surface is 135 degrees. The polarization direction of the three pixel points 32 in the other pixel unit is the second polarization direction B, i.e. the included angle between the pixel point and the light exit surface is 45 degrees. Except for this, the display information of the two pixel units is the same. At this time, the user wears the polarization glasses with the left eye having the first polarization direction a and the right eye having the second polarization direction B, the display image with the first polarization direction a enters the user's left eye, and the display image with the second polarization direction B enters the user's right eye. The two polarized pictures are synthesized by human brain, thus realizing polarized three-dimensional display.
Therefore, the invention realizes the free conversion between two-dimensional display and three-dimensional display of the display screen by controlling the signals applied to the electro-optic material layer corresponding to each pixel point.
Preferably, referring to fig. 6, the polarizing layer further includes a plurality of light shielding walls 83, and the plurality of light shielding walls 83 are spaced apart from the polarizing stack to prevent color shift phenomenon from occurring at a large viewing angle.
In this embodiment, the polarizer is made of an electro-optic material, and the refractive index of the electro-optic material is related to the voltage value at two ends of the electro-optic material layer. The electro-optic material may be an organic electro-optic material or an inorganic electro-optic material. Since the manufacturing process is relatively simple, the polarizer is made of inorganic electro-optic material in this embodiment, such as potassium dihydrogen phosphate, ammonium dihydrogen phosphate or formic acid file.
Because the wavelength of the red, green and blue emergent light is different, the phase retardation coefficient required for converting the red, green and blue emergent light into corresponding polarized light is also different, and the thicknesses of the polaroids corresponding to the red light pixel points, the blue light pixel points and the green light pixel points are also different. By adjusting the thickness of the polarization layer corresponding to the red, green and blue pixel points, the red, green and blue emergent light can be polarized light. Referring to fig. 2, in the present embodiment, the thickness of the first polarizer 811 in the polarization stack corresponding to the red pixel 32 is greater than the thickness of the second polarizer 812 in the polarization stack corresponding to the green pixel 32, and the thickness of the second polarizer 812 in the polarization stack corresponding to the green pixel 32 is greater than the thickness of the third polarizer 813 in the polarization stack corresponding to the blue pixel 32.
Referring to fig. 6, fig. 6 provides another embodiment of the present invention. Due to the fact that the thicknesses of the different polaroids are different, in order to enable the thicknesses of the plurality of polarizing lamination layers to be the same, at least part of the plurality of polarizing lamination layers further comprise a filling layer, and the filling layer is located on the optical filter. Referring to fig. 6, the first filter 821, the second filter 822, and the third filter 823 have the same thickness, the thickness of the first polarizer 811 is greater than that of the second polarizer 812, and the thickness of the second polarizer 812 is greater than that of the third polarizer 813. In order to keep the thickness of the polarizing stack uniform, a filling layer is provided over the second filter 822 and the third filter 823. A corresponding second filling layer 841 is arranged on the second polarizer 812, a corresponding third filling layer 842 is arranged on the third polarizer 813, and the thickness of the second filling layer 841 is smaller than that of the third filling layer 842. Since the thicknesses of the first filter 811, the second filter 812, and the third filter 813 are equal, the sum of the thicknesses of the second polarizer 812 and the second filling layer 841 is equal to the sum of the thicknesses of the third polarizer 813 and the third filling layer 842. The second filling layer 841 and the third filling layer 842 are made of transparent polymer, and the young modulus of the transparent polymer is greater than that of the optical filter, so as to enhance the rigidity of the polarization laminate.
Correspondingly, the invention also provides an electronic device which comprises the display panel.
The invention replaces the color filter in the prior art with the combination of the color filter and the polarizing lamination. The polarizing lamination comprises a polarizer and a polarization control unit, wherein the polarizer at least comprises a first polarization direction and a second polarization direction, and the polarization control unit is electrically connected with the corresponding polarizer and controls the polarization direction of the polarizer. When the polarization directions of the adjacent pixel points 32 are the same, the display panel realizes two-dimensional display; when the polarization directions of the adjacent pixel points 32 are vertical, the display panel realizes three-dimensional display. The display panel can flexibly control the polarization directions of different pixel points 32 through the polarization control unit, so that the two-dimensional display and the three-dimensional display can be flexibly switched.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (8)
1. A display panel, comprising:
a substrate;
a thin-film transistor layer on the substrate;
the light-emitting layer is positioned on the thin film transistor layer and comprises a plurality of pixel points;
an encapsulation layer covering the light emitting layer;
the polarizing layer is positioned on the packaging layer; wherein the content of the first and second substances,
the polarisation layer includes a plurality of polarisation stromatolites, a plurality of polarisation stromatolites' thickness is the same, a plurality of polarisation stromatolites with a plurality of pixel point one-to-one, each polarisation stromatolite includes:
the polaroids at least comprise a first polarization direction and a second polarization direction, wherein the polaroids have different thicknesses, the thickness of the polaroid in the polarizing lamination layer corresponding to the red light pixel point is larger than that of the polaroid in the polarizing lamination layer corresponding to the green light pixel point, and the thickness of the polaroid in the polarizing lamination layer corresponding to the green light pixel point is larger than that of the polaroid in the polarizing lamination layer corresponding to the blue light pixel point;
the polarization control unit is electrically connected with the corresponding polaroid and controls the polarization direction of the polaroid;
the optical filter is arranged on the polarizer, and the color of light reserved by the optical filter is the same as the color of light emitted by the pixel points corresponding to the polarizing lamination;
the filling layer is positioned on the optical filter, the material forming the filling layer is transparent polymer, and the Young modulus of the transparent polymer is larger than that of the optical filter.
2. The display panel according to claim 1, wherein the first polarization direction and the second polarization direction of the polarizer are perpendicular.
3. The display panel according to claim 2, wherein the polarization control unit comprises:
the first electrode and the second electrode are respectively positioned on two opposite surfaces of the polarizer;
and one end of the data wire is connected with the first electrode and the second electrode, and the other end of the data wire is connected with the polarization control voltage.
4. The display panel of claim 3, wherein the polarization control voltage comprises a first polarization voltage and a second polarization voltage; wherein the content of the first and second substances,
when the voltage at the two ends of the polaroid is the first polarization voltage, the polarization direction of the polaroid is the first polarization direction;
and when the voltage at the two ends of the polaroid is the second polarization voltage, the polarization direction of the polaroid is the second polarization direction.
5. The display panel according to claim 3, wherein when the polarization directions of the adjacent pixels are the same, the display panel displays a two-dimensional image; when the polarization directions of the adjacent pixel points are different, the picture displayed by the display panel is a three-dimensional picture.
6. The display panel of claim 1, wherein the polarizing layer further comprises a plurality of light-shielding walls spaced apart from the polarizing stack.
7. The display panel according to claim 1, wherein a material forming the polarizer is an electro-optical material, and a refractive index of the electro-optical material is related to a voltage value across the electro-optical material.
8. An electronic device, characterized in that it comprises a display panel according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910346497.5A CN110047900B (en) | 2019-04-26 | 2019-04-26 | Display panel and electronic device |
| PCT/CN2019/119313 WO2020215707A1 (en) | 2019-04-26 | 2019-11-19 | Display panel and electronic device |
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| CN201910346497.5A CN110047900B (en) | 2019-04-26 | 2019-04-26 | Display panel and electronic device |
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| CN110047900A CN110047900A (en) | 2019-07-23 |
| CN110047900B true CN110047900B (en) | 2021-07-23 |
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| WO (1) | WO2020215707A1 (en) |
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| CN110047900B (en) * | 2019-04-26 | 2021-07-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and electronic device |
| CN113433729B (en) * | 2021-06-23 | 2022-12-30 | 京东方科技集团股份有限公司 | Display panel and display device |
| US20240164174A1 (en) * | 2021-08-25 | 2024-05-16 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display substrate and display device |
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| CN110047900A (en) | 2019-07-23 |
| WO2020215707A1 (en) | 2020-10-29 |
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