CN113156692A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113156692A CN113156692A CN202110318408.3A CN202110318408A CN113156692A CN 113156692 A CN113156692 A CN 113156692A CN 202110318408 A CN202110318408 A CN 202110318408A CN 113156692 A CN113156692 A CN 113156692A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and is used for enriching the functions of the display panel and improving the screen occupation ratio of the display panel. The display panel includes: a display area including a plurality of sub-pixels; a light collecting area; the lighting area comprises a first sub lighting area and a second sub lighting area, the light transmittance of the first sub lighting area is smaller than that of the second sub lighting area, and the first sub lighting area comprises a semi-transparent layer; the display region at least partially surrounds the lighting region.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel and a display device.
[ background of the invention ]
With the increasing demand of users for diversified uses of display devices, various sensors are currently mounted on a display panel during the design process of the display panel. The sensor comprises a light sensitive light sensing device. Specifically, the light sense device includes an ambient light sensor for sensing ambient light intensity, a distance sensor for sensing the distance between a user and the display panel, and an imaging device such as a camera module for shooting.
At present, the arrangement of a plurality of light sensing elements including the above-mentioned sensor presents a great challenge to the improvement of the screen ratio of the display panel.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a display panel and a display device, so as to enrich the functions of the display panel and improve the screen ratio of the display panel.
In one aspect, an embodiment of the present invention provides a display panel, including:
a display area including a plurality of sub-pixels;
a light collecting area; the lighting area comprises a first sub lighting area and a second sub lighting area, the light transmittance of the first sub lighting area is smaller than that of the second sub lighting area, and the first sub lighting area comprises a semi-transparent layer;
the display region at least partially surrounds the lighting region.
In another aspect, an embodiment of the present invention provides a display apparatus, including a first light-sensing device, a second light-sensing device, and the display panel as described above; the orthographic projection of the first light sensing device on the plane where the display panel is located in the first sub lighting area, and the orthographic projection of the second light sensing device on the plane where the display panel is located in the second sub lighting area.
According to the display panel and the display device provided by the embodiment of the invention, the lighting area is arranged in the display panel, and the display area at least partially surrounds the lighting area, so that the lighting area can be prevented from being arranged in the frame area of the display panel. The width of the frame area can be set to be narrower by the arrangement, and the light transmittance in the light collecting area is not influenced. Namely, by adopting the setting mode provided by the embodiment of the invention, the display panel can be ensured to have higher screen occupation ratio while the light transmittance of the light collecting area is ensured, namely, the normal work of the light sensation device arranged corresponding to the light collecting area is ensured.
In addition, the semi-transparent layer is arranged in the first sub-lighting area, so that the light transmittance of the first lighting area is not too high on the basis of ensuring the normal work of the light sensing device arranged corresponding to the first lighting area, the light sensing device arranged corresponding to the first sub-lighting area can be better hidden, the light sensing device is prevented from being observed by human eyes, and the appearance of the display panel has a better visual effect.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display panel in the prior art;
fig. 2 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of 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 of FIG. 4;
FIG. 6 is a schematic top view of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of FIG. 6;
FIG. 8 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
FIG. 10 is a schematic top view of a partial area of a display panel according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of a cover plate according to an embodiment of the present invention;
fig. 12 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
FIG. 13 is a schematic top view illustrating a first black matrix according to an embodiment of the present invention;
FIG. 14 is a schematic top view illustrating another first black matrix according to an embodiment of the present invention;
FIG. 15 is a schematic top view illustrating a first black matrix according to an embodiment of the present invention;
FIG. 16 is a schematic top view illustrating a first black matrix according to an embodiment of the present invention;
fig. 17 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 18 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
FIG. 19 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention;
fig. 20 is a schematic top view of a display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe the sub-daylighting zones in the embodiments of the present invention, the sub-daylighting zones should not be limited to these terms. These terms are only used to distinguish the sub-lighting zones from each other. For example, the first sub lighting region may also be referred to as a second sub lighting region, and similarly, the second sub lighting region may also be referred to as a first sub lighting region, without departing from the scope of embodiments of the present invention.
In the process of implementing the embodiment of the present invention, the inventor has found that, in the prior art, as shown in fig. 1, fig. 1 is a schematic view of a display panel in the prior art, in which a light sensing hole 1 'is formed and a light sensing device (not shown) is disposed corresponding to the light sensing hole 1'. When the display panel works, the light emitted by the light sensing device is emitted out of the display panel through the light sensing hole 1 ', and the external light can also be emitted into the light sensing device through the light sensing hole 1'. In fig. 1, the photo holes 1 'corresponding to the photo devices are located in the frame region 3' of the display panel. The area of the photo hole 1' is set to ensure the light flux entering the photo device and the field of view (FOV) of the photo device. Therefore, the area of the light sensing hole 1 'and, further, the width of the frame region 3' cannot be excessively compressed, resulting in a great limitation in the improvement of the screen occupation ratio of the display panel. Particularly, when a plurality of light sensing devices are required to be arranged in the display panel, the number of the light sensing holes is correspondingly increased, and the challenge of improving the screen occupation ratio of the display panel is greater.
Moreover, when the display panel is a liquid crystal display panel including a backlight module, after the width of the frame region 3 'is excessively compressed, the distance from the light sensing hole 1' to the edge of the backlight module is compressed to be very small. In the assembling process of the display module and the backlight module, if the alignment of the display module and the backlight module is deviated, the light sensing hole 1 'may be covered, the light flux passing through the light sensing hole 1' is affected, and the light sensing device works abnormally or even fails.
In view of the above, an embodiment of the invention provides a display panel, as shown in fig. 2, fig. 2 is a schematic top view of the display panel provided in the embodiment of the invention, and the display panel includes a display area 1 and a lighting area 2. The display area 1 at least partially surrounds the lighting area 2. The display area 1 includes a plurality of sub-pixels (not shown). The lighting region 2 includes a first sub lighting region 21 and a second sub lighting region 22. The first sub lighting section 21 and the second sub lighting section 22 allow light to transmit therethrough. Here, the light allowed to be transmitted by the first sub-lighting region 21 and the second sub-lighting region 22 may be visible light including ambient light, or may be invisible light such as infrared light, which is not limited in the embodiment of the present invention.
In the embodiment of the present invention, the light transmittance of each of the first sub light collecting region 21 and the second sub light collecting region 22 is larger than that of the display region 1. And, the light transmittance of the first sub lighting region 21 is smaller than that of the second sub lighting region 22. When the display panel is used to manufacture a display device having a demand for various light sensing characteristics, a plurality of types of light sensing devices may be provided in the display panel. For example, in the embodiment of the present invention, light sensing devices having different transmittance requirements for light may be subsequently provided in the first sub light collecting region 21 and the second sub light collecting region 22. Alternatively, light sensing devices having different sensitivities may be provided in the first sub lighting region 21 and the second sub lighting region 22 having different light transmittances, according to the sensitivity of the light sensing device employed. In the embodiment of the present invention, the light sensing device may include an imaging device such as a distance sensor for sensing a distance between the display panel and the object to be measured, an ambient light brightness sensor for sensing ambient light brightness, and a camera for shooting.
The distance sensor can emit light and receive reflected light reflected by the measured object. For example, when the distance sensor is operated, the distance sensor emits infrared light, and when the object to be measured is close enough to the distance sensor, the object to be measured reflects the light into the distance sensor. The distance to the object under test can be calculated by measuring the time from when the distance sensor emits light to when the distance sensor receives light reflected by the object under test, and by measuring the time interval. When the display device is designed as a mobile phone, the distance sensor can be used for automatically opening or closing the screen according to the distance between the mobile phone and the human face in the process of receiving and making a call. In addition, when the mobile phone is put into a pocket, the distance sensor can judge that the mobile phone is close to clothes of people to make the screen of the mobile phone black, so as to prevent misoperation.
The ambient light brightness sensor can sense the brightness of the environment where the display panel is located. The display device operating system utilizes the data of the ambient light brightness sensor, can automatically adjust the brightness of the display panel: when the ambient brightness is high, the brightness of the display panel is correspondingly increased; when the ambient brightness is low, the brightness of the display panel is correspondingly reduced. According to the arrangement, the screen reading experience of the display device in different environments is guaranteed, the power consumption can be reduced, and the working time of the display device is prolonged to the maximum extent.
For example, the embodiment of the present invention may dispose a distance sensor and/or an ambient light level sensor in the first sub lighting area 21, and dispose an imaging device such as a camera capable of imaging in the second sub lighting area 22. The normal work of the distance sensor and/or the ambient light brightness sensor is guaranteed, and meanwhile the shooting quality of the camera can be guaranteed.
In the embodiment of the present invention, the first sub lighting region 21 includes the half-transmitting layer 3. Wherein, the light transmittance of the semi-transparent layer 3 can be set according to actual requirements. The arrangement of the semi-transparent layer 3 can ensure that the light transmittance of the first light collecting area 21 is not too high on the basis of ensuring the normal operation of the light sensing device arranged corresponding to the first light collecting area 21, so that the light sensing device arranged corresponding to the first sub light collecting area 21 can be better hidden, human eyes are prevented from observing the light sensing device, and the appearance of the display panel has a better visual effect.
When the display panel works, external light can penetrate through the first sub light collecting area 21 and the second sub light collecting area 22 to irradiate towards the light sensing device. And/or light emitted from the light sensing devices in the first sub light collecting region 21 and the second sub light collecting region 22 may be transmitted through the first sub light collecting region 21 and the second sub light collecting region 22 to exit the display panel.
According to the display panel provided by the embodiment of the invention, the light collecting area 2 is arranged in the display panel, and the display area 1 at least partially surrounds the light collecting area 2, so that the light collecting area 2 can be prevented from being arranged in the frame area 4 of the display panel. By such an arrangement, the width of the frame region 4 can be set to be narrow without affecting the light transmittance in the lighting region 2. That is, by adopting the setting mode provided by the embodiment of the present invention, it is possible to ensure that the display panel has a higher screen occupation ratio while ensuring the light transmittance of the light collecting region 2, that is, ensuring the normal operation of the light sensing device arranged corresponding to the light collecting region 2.
In addition, the semi-transparent layer 3 is arranged in the first sub-light-collecting area 21, so that the light transmittance of the first light-collecting area 21 is not too high on the basis of ensuring the normal operation of the light-sensing device arranged corresponding to the first light-collecting area 21, the light-sensing device arranged corresponding to the first sub-light-collecting area 21 can be better hidden, the light-sensing device is prevented from being observed by human eyes, and the appearance of the display panel has a better visual effect.
As shown in fig. 2 and 3, fig. 3 is a schematic cross-sectional view of fig. 2, and the embodiment of the present invention may make the first sub lighting region 21 and the second sub lighting region 22 communicate with each other. Here, the first sub lighting region 21 and the second sub lighting region 22 communicating with each other means that the display region 1 including sub pixels is not provided between the first sub lighting region 21 and the second sub lighting region 22. As shown in fig. 3, a first photosensitive device 201 may be disposed corresponding to the first sub-lighting region 21, and a second photosensitive device 202 may be disposed corresponding to the second sub-lighting region 22. So set up, be equivalent to and concentrate setting up first sub-daylighting region 21 and second sub-daylighting region 22, when first sub-daylighting region 21 and second sub-daylighting region 22 do not show, put the two together, can compromise display panel's whole visual design, avoid appearing including the not display area of a plurality of dispersed settings in the display panel.
Illustratively, some light leakage preventing material, such as black glue 10 shown in fig. 3, may be disposed between the first photosensitive device 201 and the second photosensitive device 202 and at the periphery of the light collecting region 2 to avoid light leakage.
Alternatively, in the embodiment of the present invention, sub-pixels may also be disposed in the first sub lighting region 21 and the second sub lighting region 22, that is, the first photosensitive device 201 and the second photosensitive device 202 are set to be in the panel mode. At this time, the light transmittance of the first sub lighting region 21 and the second sub lighting region 22 can be increased by decreasing the pixel density in the first sub lighting region 21 and the second sub lighting region 22 so that the pixel density in both the first sub lighting region 21 and the second sub lighting region 22 is smaller than the pixel density in the display region 1. For example, when a camera is disposed in the second sub lighting area 22, an under-screen camera technology may be employed, so that in the shooting mode, pixels in the second sub lighting area 22 are not displayed, and in the display mode, pixels in the second sub lighting area 22 are displayed, thereby achieving a full-screen display effect. At this time, the first sub lighting region 21 and the second sub lighting region 22 may be communicated or may not be communicated.
In the embodiment of the present invention, the number of the first sub lighting area 21 and the second sub lighting area 22 may be one or more. As shown in fig. 4 and fig. 5, fig. 4 is a schematic top view of another display panel according to an embodiment of the present invention, and fig. 5 is a schematic cross-sectional view of fig. 4, the display panel includes a first sub lighting region 21 and two second sub lighting regions 22. The first sub lighting zone 21 is located between two second sub lighting zones 22.
Alternatively, as shown in fig. 6 and 7, fig. 6 is a schematic top view of another display panel provided in the embodiment of the present invention, and fig. 7 is a schematic cross-sectional view of fig. 6, in the embodiment of the present invention, the first sub light collecting region 21 and the second sub light collecting region 22 may be separated by the display region 1. The distance between the first sub lighting region 21 and the second sub lighting region 22 may be set according to different design requirements. For example, the embodiment of the present invention may make the distance between the first sub lighting region 21 and the second sub lighting region 22 smaller to take into account the overall visual design of the display panel.
It should be noted that the shapes and areas of the first sub-light collecting region 21 and the second sub-light collecting region 22 shown in fig. 2 to fig. 7 are only schematic, and in the design process of the actual display panel, the shapes and areas may be adjusted according to the type of the light sensing device to be arranged and other design requirements, which is not limited in the embodiment of the present invention.
In the embodiment of the present invention, the display panel may be a liquid crystal display panel. Alternatively, the display panel may be a display panel of a self-Light Emitting technology, such as an Organic Light Emitting Diode (OLED) display panel. Or a Micro Light Emitting Diode (Micro-LED) display panel, or a Quantum dot Light Emitting Diode (Quantum Light Emitting Diode, QLED) display panel, etc., which is not limited in the embodiments of the present invention.
Exemplarily, the display panel includes a cover plate located on a light-emitting side of the display panel, and the cover plate is configured to protect devices in the display panel. In manufacturing the display panel, the semi-transmissive layer may be formed on one side of the cover plate according to an embodiment of the invention. As shown in fig. 8, fig. 8 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, in which the display panel is taken as a liquid crystal display panel, and the display panel includes a color filter substrate 6 and an array substrate 8 that are oppositely disposed, and a liquid crystal layer 7 located between the color filter substrate and the array substrate. The cover plate 5 is located on one side of the color film substrate 6, which is far away from the array substrate 8, and the semi-transparent layer 3 is located between the cover plate 5 and the color film substrate 6. The array substrate 8 is provided therein with a thin film transistor (not shown), a pixel electrode (not shown), and a common electrode (not shown). Color resists (not shown) of a plurality of colors are provided in the color filter substrate 6. When the display panel displays, under the action of an electric field between the pixel electrode and the common electrode, the liquid crystal deflects, light emitted by the backlight module (not shown) is modulated, and full-color display of the display panel is realized through the filtering action of the color film substrate 6.
For example, as shown in fig. 8, the color film substrate 6, the liquid crystal layer 7 and the array substrate 8 may not be disposed at a position corresponding to the first sub lighting area 21, that is, a through hole 210 is formed at a position corresponding to the first sub lighting area 21 in the display panel, and then the light sensing device may be disposed in the through hole 210.
Alternatively, as shown in fig. 9, fig. 9 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, in the embodiment of the present invention, the color film substrate 6, the liquid crystal layer 7, and the array substrate 8 may be disposed in the first sub lighting area 21, that is, no through hole is formed in the display panel, and the first sub lighting area 21 may have pixels or may not have pixels. When pixels are arranged, the light transmittance of the first sub lighting area 21 can be improved by reducing the pixel density in the first sub lighting area 21, and then the light sensing device can be arranged on the side of the array substrate 8 away from the color film substrate 6.
As shown in fig. 8 and 9, the semi-transparent layer 3 includes a semi-transparent black ink 31, and the semi-transparent black ink 31 is located on the side of the cover 5 away from the light emitting side of the display panel.
Illustratively, the semi-permeable black ink 31 may be formed on the cover plate 5 through a printing process at the time of fabrication. After the formation of the semi-permeable black ink 31 is finished, the cover plate 5 is aligned and attached to the color film substrate 6 and the array substrate 8.
In the embodiment of the present invention, the semi-transparent black ink 31 is arranged to shield a light sensing device (not shown) arranged corresponding to the first sub lighting area 21, so as to prevent the light sensing device from being observed by human eyes from the outside of the display panel. In addition, the semi-transparent black ink 31 has a certain light transmittance, and can allow external light to normally penetrate through the semi-transparent black ink 31 and emit to the light sensing device, so that the light sensing device normally works. In the embodiment of the present invention, the type of the semi-transparent black ink 31 may be selected according to the type of the light sensing device disposed in the display panel corresponding to the first sub lighting region 21, and the thickness of the semi-transparent black ink 31 may be set.
Exemplarily, as shown in fig. 8, fig. 9 and fig. 10, fig. 10 is a schematic top view of a partial area of a display panel according to an embodiment of the present invention, and the display panel further includes a first light shielding layer 91. As shown in fig. 8 and 9, the first light-shielding layer 91 is located on the same side of the cover 5 as the black translucent ink 31, and the first light-shielding layer 91 surrounds the first sub lighting region 21. In the embodiment of the present invention, the first light shielding layer 91 is added, and the position of the first light shielding layer 91 is the boundary between the first sub lighting area 21 and the display area 1. That is, the position and shape of the first sub lighting region 21 may be defined by the position and shape of the first light shielding layer 91. When a process failure such as printing shrinkage occurs at the printing edge of the semi-transparent black ink 31 during printing of the semi-transparent black ink 31, the first light shielding layer 91 is provided to ensure the contour shape of the first sub lighting area 21. The arrangement of the first light-shielding layer 91 allows strong controllability of the position and shape of the first sub light-collecting region 21, avoiding the position or shape of the first sub light-collecting region 21 from deviating from expectations.
In addition, when the material for forming the first light-shielding layer 91 is selected, the embodiment of the invention may be formed by selecting a material having a very low light transmittance with respect to visible light, so that the light transmittance of the first light-shielding layer 91 with respect to light is smaller than the light transmittance of the above-described semi-transparent black ink 31 with respect to visible light, so that the first light-shielding layer 91 hardly allows visible light to transmit therethrough. For example, the first light shielding layer 91 may be a black ink or other material with low visible light transmittance. The all-black ink may be formed using a printing process. This is provided to avoid the problem of light leakage at the boundary position of the first sub-lighting region 21 and the display region 1.
With continued reference to fig. 8 and 9, the first light-shielding layer 91 and the semi-permeable black ink 31 at least partially overlap in a normal direction of the light-emitting surface of the display panel.
When manufacturing the display panel having the structure shown in fig. 8 and 9, as shown in fig. 11, fig. 11 is a schematic cross-sectional view of a cover plate according to an embodiment of the present invention, in which a circle of the first light shielding layer 91 including the all black ink may be printed on one side of the cover plate 5 according to an embodiment of the present invention. After the first light-shielding layer 91 is prepared, the semi-permeable black ink 31 is printed. The semi-permeable black ink 31 covers a space surrounded by the first light-shielding layer 91. The first light shielding layer 91 and the semi-transparent black ink 31 at least partially overlap along a normal direction of a light emitting surface of the display panel. Specifically, when the black semi-transmissive ink 31 is printed after the first light-shielding layer 91 is prepared, the boundary of the black semi-transmissive ink 31 may be set back to the center of the first sub-lighting region 21 by a partial distance with respect to the boundary of the first light-shielding layer 91, as shown in fig. 11, where the back distance d2 is smaller than the width d1 of the first light-shielding layer 91 so as to overlap with each other. So set up, can avoid appearing because the less unable condition that covers first sub-daylighting district 21 completely of area that process error scheduling problem leads to semi-transparent black printing ink 31, can improve the light sense device's that sets up to corresponding first sub-daylighting district 21 shielding nature, avoid the light sense device to be observed by the human eye.
For example, as shown in fig. 10, the frame region 4 of the display panel is provided with a second light-shielding layer 92 to prevent the traces and the electronic devices in the frame region 4 from being observed by human eyes. In the process of manufacturing the display panel, the first light shielding layer 91 surrounding the first sub-lighting area 21 and the second light shielding layer 92 located in the frame area 4 may be formed by the same process, so as to simplify the manufacturing process of the display panel.
The structure of the display panel has been described above by way of example in which the semi-transmissive layer 3 is formed on one side of the cover 5. Alternatively, as shown in fig. 12, fig. 12 is a schematic cross-sectional view of another display panel provided in the embodiment of the present invention, and in the embodiment of the present invention, the semi-transparent layer 3 may further be configured to include a first black matrix 321; the first black matrix 321 includes a plurality of hollows 3210. The color filter substrate 6 includes a second black matrix 322 in the display region 1. In the embodiment of the present invention, the first black matrix 321 may be disposed in the same layer as the second black matrix 322. Therefore, the first black matrix 321 serving as the semi-transparent layer 3 can be directly and synchronously manufactured in the black matrix process for manufacturing the color film substrate 6, the process is simple, the cost is low, a printing process for arranging ink on one side of the cover plate 5 of the display panel is omitted, and the ink printing cost of the first sub-lighting area 21 can be reduced. Moreover, the process of forming the hollow portion 3210 on the first black matrix 321 is mature, and the dimensional accuracy of the hollow portion 3210 can be very high, for example, when the orthographic projection of the hollow portion 3210 on the plane of the display panel is set to be circular, the diameter of the hollow portion 3210 can be as small as 3 μm, which has a wide application range.
As shown in fig. 12, the color filter substrate 6 further includes second color resists 332, and the second black matrix 322 is located between two adjacent second color resists 332. Wherein at least a portion of the second color resists 332 may be different colors of light allowed to pass therethrough. For example, a portion of the second color resistor 332 may be a red color resistor for transmitting red light, another portion of the second color resistor 332 may be a green color resistor for transmitting green light, and yet another portion of the second color resistor 332 may be a blue color resistor for transmitting blue light. In the embodiment of the invention, by arranging the second color resistor 332 and the second black matrix 322 and limiting the position of the second color resistor 332 for filtering light by using the second black matrix 322, the second black matrix can shield a non-display structure including a scanning line, a data line and a thin film transistor in the array substrate 8, and avoid mutual interference between light rays emitted by the second color resistors 332 of two adjacent different colors, so that the display effect of the display panel can be ensured.
In the embodiment of the invention, the total area S1 of the hollowed-out portion may be designed according to the transmittance requirement of the first sub lighting area 21. Taking the area of the first sub lighting region 21 as S2 and the total transmittance of all film layers except the semi-transmissive layer in the first sub lighting region 21 as a as an example, after a first black matrix including a hollow portion is provided in the first sub lighting region 21, the transmittance T of the first sub lighting region 21 is a × (S1/S2). When the transmittance T, the total transmittance a, and the area S2 of the first sub lighting region 21 are known, the total area S1 of the hollowed-out portion can be calculated. The shape and the area of the single hollow-out part can be set according to the process capability, and then the density and the number of the hollow-out parts can be calculated.
Assuming that the transmittance T of the first sub lighting area 21 is 10%, taking the display panel as an example of a liquid crystal display module, it is known that after holes are cut in positions of the upper and lower polarizers in the display module corresponding to the first sub lighting area 21, the transmittance a of the display module is about 92%, and if the first sub lighting area 21 is a circle with a diameter of 4mm, the total area S1 of the hollowed-out portion can be determined according to the value of T × (S1/S2) and the value of 10% × (S1/4 pi). The density and number of the hollowed-out parts can be calculated according to the value of S1 and the shape and area of the single hollowed-out part. When the total area S1 of the hollow portions is constant, the embodiment of the present invention may set the area of a single hollow portion to be smaller, and set the total number of the hollow portions to be larger. Alternatively, the area of a single hollow portion may be set to be large, and the total number of hollow portions may be set to be small.
In the embodiment of the present invention, the shape of the orthographic projection of the hollow portion 3210 on the plane of the display panel may have various designs. For example, in the embodiment of the present invention, the shape of the orthographic projection of the hollow portion on the plane where the display panel is located may be set to include a point shape and/or a line shape.
As shown in fig. 13 and 14, fig. 13 and 14 are two schematic top views of the first black matrix, a shape of an orthogonal projection of the hollow portions (white areas in fig. 13 and 14) on a plane where the display panel is located includes a dot shape, and a plurality of hollow portions are arranged in an array in the first sub light-collecting area 21. Here, the array arrangement means that the arrangement of the plurality of hollow portions has a certain rule. The rule includes that the plurality of hollowed-out portions are arranged in an array along a first direction x and a second direction y, as shown in fig. 13, wherein the first direction x and the second direction y intersect. Also included is an arrangement of multiple hollowed-out portions along the circumferential direction z, as shown in fig. 14. The hollow parts arranged in an array manner can enable the light-transmitting area and the light-tight area in the first sub light collecting area to be uniformly distributed, and the uniformity of light entering the light sensing device can be improved.
For example, as shown in fig. 13 and 14, the plurality of hollowed-out portions may be arranged at equal intervals in the first sub lighting area.
It should be noted that the dots shown in fig. 13 and 14 are all round dots, and actually, the specific shape of the hollow portion is not limited in the embodiment of the present invention, and the shape of the orthographic projection of the hollow portion on the plane where the display panel is located may be set as a polygonal dot, such as a triangle, a rectangle, a diamond, or the like, or the shape of the orthographic projection of the hollow portion on the plane where the display panel is located may be set as another irregular shape.
Alternatively, as shown in fig. 15 and 16, fig. 15 and 16 are schematic top views of two other first black matrixes provided in the embodiment of the present invention, and the shape of the orthographic projection of the hollow portion (the white area in fig. 15 and 16) on the plane of the display panel in the embodiment of the present invention may further include a linear shape. When the shape of the orthographic projection of the plurality of hollow parts on the plane where the display panel is located is set to be a line shape, the shape of the orthographic projection of the hollow parts on the plane where the display panel is located can comprise an arc line and/or a line segment.
As shown in fig. 15, the orthographic projection shape of the plurality of hollow-out portions on the plane of the display panel includes an arc line. The arc includes a circular ring. The plurality of circular rings are arranged in a direction pointing from the geometric center of the first sub-lighting section to the edge. So set up, in the direction from the geometric centre directional edge in first sub-daylighting district, the light transmission district in the first sub-daylighting district and opaque district evenly distributed can improve the degree of consistency of the light of penetrating into light sense device.
With continued reference to fig. 15, the orthographic projection shapes of the hollow-outs on the plane of the display panel include concentric rings; the geometric center of the concentric ring is coincident with the geometric center of the first lighting area, and the difference of the inner diameters of any two adjacent rings in the concentric ring is the same. So set up, in the direction from the geometric centre directional edge in first sub-district of adopting, can make the distribution homogeneity that the light zone and opaque district in first sub-district of adopting improve to can further improve the degree of consistency of the light of penetrating into light sensing device.
As shown in fig. 16, the shape of the orthographic projection of the plurality of hollow portions on the plane of the display panel includes a line segment, the line segment includes a first end point 301 and a second end point 302, and the distance between the first end point 301 and the geometric center of the first light collecting area 21 is greater than the distance between the second end point 302 and the geometric center of the first light collecting area. The first end point 301 belonging to a different line segment is equidistant from the geometric center of the first sub-lighting section. With the arrangement, the plurality of hollow parts are in a radial shape as shown in fig. 16, so that the normal operation of the light sensing device arranged corresponding to the first lighting area can be ensured, and a better hidden visual effect of the light sensing device arranged corresponding to the first sub-lighting area can be realized. As shown in fig. 16, the included angle between any two adjacent line segments is the same.
Exemplarily, as shown in fig. 17, fig. 17 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, the semi-transparent layer 3 further includes a first color resistor 331, and at least a portion of the first color resistor 331 fills the hollow portion 3210. The arrangement ensures the hiding effect of the light sensing devices in the first sub lighting area 21, and simultaneously, the light of specific colors can enter the light sensing devices through the first sub lighting area 21, so as to meet the design requirements of the light sensing devices of various hue types. For example, when the light sensing device to be set needs to operate in the blue light band, that is, the light transmitted by the first sub-lighting region 21 needs to be biased to be blue, the embodiment of the invention may set the first color resist 331 to be blue.
After the first color resist 331 is provided, the transmittance T of the first sub lighting region 21 is a × (S1/S2) × T. Wherein a is the total transmittance of all the film layers except the semi-transparent layer in the first sub-lighting region 21; s is the total area of the hollow part; s2 is the area of the first sub lighting zone; t is the light transmittance of the first color resistance. When the transmittance T, the total transmittance a, the area S2 of the first sub light collecting region 21, and the light transmittance T of the first color resistance are known, the total area S1 of the hollowed-out portion can be calculated. The shape and the area of the single hollow-out part can be set according to the process capability, and then the density and the number of the hollow-out parts can be calculated.
Alternatively, as shown in fig. 18, fig. 18 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, and fig. 18 is different from fig. 17 in that in the display panel shown in fig. 18, the first sub light collecting region 21 does not have a black matrix. The semi-transparent layer 3 includes a first color resist 331 on the color filter substrate. The first color resist 331 and at least a portion of the second color resist 332 in the display area 1 are the same color. Therefore, the first color resistor 331 and the second color resistor 332 can be manufactured by the same process, and the process flow is simplified. The first sub light collecting region 21 can transmit light of a specific color while satisfying light transmittance and light shielding properties. For example, when a customer requires that the transmittance of the visible light band in the first sub-light collecting region 21 is as low as possible and the transmittance of the infrared band is high, the customer requirements can be met by setting the semi-transparent layer 3 to be a red color resistor with a wavelength of the transmitted light close to the infrared band without matching the first black matrix and the hollow portion.
Alternatively, as shown in fig. 19, fig. 19 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention, in which the first color resistor 331 includes a first sub-color resistor 3311 and a second sub-color resistor 3312, and the first sub-color resistor 3311 and the second sub-color resistor 3312 have different colors; the first sub color resists 3311 and 3312 are stacked along the normal direction of the light-emitting surface of the display panel. The color of the light emitted from the first sub-color-resistor 3311 and the second sub-color-resistor 3312 can be set as required. For example, when a photosensitive element sensitive to yellow light is provided corresponding to the first sub-lighting region 21, the light emission colors of the first sub-color resistor 3311 and the second sub-color resistor 3312 may be set to red and green, respectively, to mix yellow with the red and green. In the embodiment of the present invention, the first color resist 331 is provided as at least two sub-color resists having different colors, which are stacked, so that the first sub-light collecting region 21 can transmit light of more specific colors while satisfying the light transmittance and shielding performance of the first sub-light collecting region 21.
As shown in fig. 20, fig. 20 is a schematic top view of a display device according to an embodiment of the present invention, the display device includes a first light-sensing device (not shown), a second light-sensing device (not shown), and the display panel 100; the orthographic projection of the first light sensing device on the plane of the display panel is located in the first sub lighting area 21, and the orthographic projection of the second light sensing device on the plane of the display panel is located in the second sub lighting area 22.
For example, the first light-sensing device may be a distance sensor and/or an ambient light level sensor as described above; the second light-sensing device may be a device that can be used for imaging, such as an image pickup device as described above.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (19)
1. A display panel, comprising:
a display area including a plurality of sub-pixels;
a light collecting area; the lighting area comprises a first sub lighting area and a second sub lighting area, the light transmittance of the first sub lighting area is smaller than that of the second sub lighting area, and the first sub lighting area comprises a semi-transparent layer;
the display region at least partially surrounds the lighting region.
2. The display panel according to claim 1,
the display panel comprises a cover plate, and the cover plate is positioned on the light emergent side of the display panel;
the semi-transparent layer comprises semi-transparent black ink, and the semi-transparent black ink is positioned on one side, far away from the light emitting side, of the cover plate.
3. The display panel according to claim 2,
the display panel further comprises a first light shielding layer, the first light shielding layer and the semi-transparent black ink are located on the same side of the cover plate, and the first light shielding layer surrounds the first sub-lighting area.
4. The display panel according to claim 3,
and the shading layer and the semi-transparent black ink are at least partially overlapped along the normal direction of the light-emitting surface of the display panel.
5. The display panel according to claim 1,
the semi-transparent layer comprises a first black matrix; the first black matrix comprises a plurality of hollow parts;
the display panel comprises a color film substrate; the color film substrate comprises a second black matrix and second color resistors, wherein the second black matrix is positioned in the display area and is positioned between two adjacent second color resistors;
the first black matrix and the second black matrix are arranged in the same layer.
6. The display panel according to claim 5,
the shape of the orthographic projection of the hollow part on the plane of the display panel comprises a point shape and/or a line shape.
7. The display panel according to claim 6,
the shape of the orthographic projection of the hollow parts on the plane where the display panel is located comprises a point shape, and the hollow parts are arranged in the first sub-lighting area in an array mode.
8. The display panel according to claim 6,
the shape of the orthographic projection of the hollow parts on the plane where the display panel is located comprises a line shape, and the shape of the orthographic projection of the hollow parts on the plane where the display panel is located comprises an arc line and/or a line segment.
9. The display panel according to claim 8, wherein a shape of an orthographic projection of the plurality of hollowed-out portions on a plane of the display panel comprises an arc line; the arc includes a circular ring.
10. The display panel of claim 9, wherein the shape of the orthographic projection of the plurality of hollow-outs on the plane of the display panel comprises concentric rings;
the geometric center of the concentric ring is coincident with that of the first light collecting area, and the difference value of the inner diameters of any two adjacent rings in the concentric ring is the same.
11. The display panel according to claim 8,
the shape of the orthographic projection of the hollow parts on the plane of the display panel comprises a line segment, the line segment comprises a first end point and a second end point, and the distance between the first end point and the geometric center of the first light collecting area is larger than the distance between the second end point and the geometric center of the first light collecting area; the distances between the first end points belonging to different line segments and the geometric center of the first sub lighting area are equal.
12. The display panel according to claim 11,
and the included angles between any two adjacent line segments are the same.
13. The display panel according to claim 5,
the semi-transparent layer further comprises a first color resistor, and at least part of the first color resistor is filled in the hollow part.
14. The display panel according to claim 1,
the semi-transparent layer comprises a first color resistor positioned on the color film substrate;
the display panel comprises a color film substrate; the color film substrate comprises a second black matrix and second color resistors, wherein the second black matrix is located in the display area, and the second black matrix is located between every two adjacent second color resistors.
15. The display panel according to claim 14, wherein the first color resistance and at least a portion of the second color resistance are the same color.
16. The display panel according to claim 14,
the first color resistor comprises a first sub color resistor and a second sub color resistor, and the colors of the first sub color resistor and the second sub color resistor are different;
and the first sub color resistor and the second sub color resistor are arranged in a stacked mode along the normal direction of the light-emitting surface of the display panel.
17. The display panel according to claim 1,
the first sub lighting area and the second sub lighting area are communicated with each other.
18. The display panel according to claim 17,
the number of the second sub lighting areas is at least two, and the first sub lighting area is positioned between two adjacent second sub lighting areas.
19. A display device comprising a first light-sensing device, a second light-sensing device, and the display panel according to any one of claims 1 to 18; the orthographic projection of the first light sensing device on the plane where the display panel is located in the first sub lighting area, and the orthographic projection of the second light sensing device on the plane where the display panel is located in the second sub lighting area.
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