CN117479733A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN117479733A
CN117479733A CN202310995309.8A CN202310995309A CN117479733A CN 117479733 A CN117479733 A CN 117479733A CN 202310995309 A CN202310995309 A CN 202310995309A CN 117479733 A CN117479733 A CN 117479733A
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CN
China
Prior art keywords
hole
light
display panel
substrate
film layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310995309.8A
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Chinese (zh)
Inventor
胡凯
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to CN202310995309.8A priority Critical patent/CN117479733A/en
Publication of CN117479733A publication Critical patent/CN117479733A/en
Pending legal-status Critical Current

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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
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The embodiment of the application discloses a display panel and a display device. The display panel comprises a fingerprint sensing layer, a substrate, a light emitting layer and a color film layer which are sequentially arranged, wherein the light emitting layer comprises a plurality of light emitting parts which are arranged at intervals and a first shading part which is positioned between two adjacent light emitting parts, the first shading part is provided with a first through hole, the color film layer comprises a plurality of color resistors which are arranged at intervals and a second shading part which is arranged between two adjacent color resistors, the second shading part is provided with a second through hole, the orthographic projection of the second through hole on the substrate is not overlapped with the orthographic projection of the first through hole on the substrate, and the fingerprint sensing layer is used for receiving reflected light rays which are emitted by the light emitting parts and sequentially pass through the second through hole and the first through hole after fingerprint reflection. According to the fingerprint unlocking device, the first through hole and the second through hole are arranged to be non-overlapping, and the light emitted by the light-emitting part can be received by the fingerprint sensing layer after being reflected, so that the bright area can be avoided in the screen quenching state when fingerprint unlocking is realized.

Description

Display panel and display device
Technical Field
The application relates to the field of display, in particular to a display panel and a display device.
Background
Along with the development of display technology, various display devices with fingerprint identification functions appear on the market, such as mobile phones, tablet computers, intelligent wearable devices and the like, and users can realize the functions of unlocking, paying and the like of the display devices through fingerprint identification, so that the permission verification process is simplified, and the user experience is improved. The basic principle of fingerprint identification is as follows: the external fingerprint recognition light source or the organic light-emitting element of the multiplexing display panel generates light rays to reach the contact surface of the finger and the display panel, so that the light rays are reflected after passing through the fingerprint of the finger, the reflected light rays are received by the fingerprint recognition element, and the fingerprint recognition element performs imaging according to a corresponding imaging principle to realize fingerprint recognition. Organic light-emitting diodes (OLEDs) are increasingly popular for their self-luminous display, fast response, high brightness, and wide viewing angle. However, when the fingerprint identification function is applied to the OLED display panel without the polarization technology in the prior art, when the fingerprint unlocking under the screen is realized, a bright area appears on the display panel in the screen extinguishing state, and the use experience of the display panel is affected.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can solve the problem that the existing display panel cannot realize fingerprint unlocking under a screen and simultaneously avoid a bright area under a screen quenching state.
The embodiment of the application provides a display panel, which comprises:
a substrate base;
the light-emitting layer is arranged on the substrate base plate and comprises a plurality of light-emitting parts which are arranged at intervals and a first shading part which is positioned between two adjacent light-emitting parts; a first through hole is formed in the first shading part;
the color film layer is arranged on one side, away from the substrate, of the light-emitting layer, and comprises a plurality of color resistors arranged at intervals and a second shading part arranged between two adjacent color resistors; the second shading part is provided with a second through hole, and the orthographic projection of the second through hole on the substrate is not overlapped with the orthographic projection of the first through hole on the substrate;
the fingerprint sensing layer is arranged on one side, deviating from the light-emitting layer, of the substrate base plate, and is used for receiving reflected light rays which sequentially pass through the second through hole and the first through hole after being reflected by fingerprints, wherein the light rays are emitted by the light-emitting part.
Optionally, in some embodiments of the present application, at least two first through holes are formed on the first light shielding portion, and orthographic projections of the second through holes on the substrate are located between orthographic projections of the two first through holes on the substrate.
Optionally, in some embodiments of the present application, the first light shielding portion is provided with a plurality of first through holes, and orthographic projections of the plurality of first through holes on the substrate are symmetrically distributed with respect to orthographic projections of the second through holes on the substrate.
Optionally, in some embodiments of the present application, the display panel includes:
the first optical film layer is positioned on one side of the color film layer facing the light-emitting layer, and a third through hole is formed in the first optical film layer at a position corresponding to the second through hole;
the second optical film layer is positioned at one side of the color film layer, which is away from the light-emitting layer, and fills the second through hole and the third through hole; the second optical film layer and one side of the first optical film layer facing the color film layer form a first interface, and the second optical film layer and the side wall of the third through hole form a second interface;
the refractive index of the second optical film layer is smaller than that of the first optical film layer, so that light rays emitted by the light emitting part pass through the first interface after being reflected by fingerprints and pass through the first through hole after being reflected by the second interface.
Optionally, in some embodiments of the present application, an orthographic projection of the third through hole on the substrate does not overlap with an orthographic projection of the first through hole on the substrate.
Optionally, in some embodiments of the present application, a side of the second through hole facing the third through hole forms a first opening, a side of the third through hole facing the second through hole forms a second opening, and a side of the third through hole facing away from the second through hole forms a third opening; the opening area of the second opening is smaller than the opening area of the first opening, the opening area of the third opening is smaller than or equal to the opening area of the first opening, and the opening area of the third opening is larger than or equal to the opening area of the second opening.
Optionally, in some embodiments of the present application, the second interface forms an angle with the first interface; the included angle is greater than or equal to 50 degrees and less than or equal to 90 degrees.
Optionally, in some embodiments of the present application, the difference between the refractive index of the first optical film layer and the refractive index of the second optical film layer is greater than or equal to 0.1 and less than or equal to 0.4.
Optionally, in some embodiments of the present application, orthographic projections of the first through hole, the second through hole, and the third through hole on the substrate are located within orthographic projections of the fingerprint sensing layer on the substrate.
Accordingly, an embodiment of the present application provides a display device including any one of the display panels described above.
The display panel in this embodiment includes substrate, luminescent layer, various rete and fingerprint sensing layer, luminescent layer and various rete set gradually in one side of substrate, fingerprint sensing layer sets up the opposite side at substrate, luminescent layer includes the luminous portion that a plurality of intervals set up, and be located the first shading portion between two adjacent luminous portions, first through-hole has been seted up on the first shading portion, various rete includes the look resistance that a plurality of intervals set up, and set up the second shading portion between two adjacent look resistances, the second through-hole has been seted up on the second shading portion, the orthographic projection of second through-hole on substrate does not overlap with the orthographic projection of first through-hole on substrate, fingerprint sensing layer is used for receiving the light that luminous portion sent and passes the reflection light of second through-hole and first through-hole in proper order after the fingerprint reflection. This application is through setting up first through-hole and second through-hole to non-overlapping, and the light that luminous portion sent can be received by fingerprint sensing layer through first through-hole and second through-hole after the reflection for when satisfying fingerprint unblock demand, can avoid display panel to appear the bright zone under the screen state of putting out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 2 is an enlarged schematic view of the area A in FIG. 1 according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present application.
Reference numerals illustrate:
10, a display device;
100, a display panel; 110, a substrate base; 120, an array layer; 130, a light emitting layer; 131, a light emitting section; 132, a first light shielding portion; 1321, a first via; 140, an anode layer; 150, a luminescent public layer; 160 a cathode layer; 170, an encapsulation layer; 180, a touch layer; 190, a first optical film layer; 191, a third through hole; 1911, a second opening; 1912, a third opening; 192, a first interface; 193, a second interface; 200, a color film layer; 201, color resistance; 202, a second light shielding portion; 203, a second through hole; 204, a first opening; 210, a second optical film layer; 220, cover sheet layers; 230, a fingerprint sensing layer; 240, an adhesive layer;
300, a control circuit;
400, a housing;
500, fingerprint.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The embodiment of the application provides a display panel and a display device, and the display panel and the display device are described in detail below. The following description of the embodiments is not intended to limit the preferred embodiments.
First, as shown in fig. 1, the display panel 100 includes a substrate 110, where the substrate 110 is used as a supporting structure of the display panel 100 and is used to support other functional structural layers disposed on the substrate 110, so as to ensure the overall structural stability of the display panel 100. The substrate 110 may be a glass substrate or other material type substrate, which is not particularly limited herein.
The display panel 100 includes a light emitting layer 130, the light emitting layer 130 being disposed on a substrate 110, the light emitting layer 130 including a plurality of light emitting portions 131 disposed at intervals, and a first light shielding portion 132 between two adjacent light emitting portions 131. The light emitting portion 131 is used as a light emitting means of the display panel 100, and the control of the light emitting mode of the light emitting portion 131 can realize the control of the display screen of the display panel 100. The first light shielding portion 132 can avoid light crosstalk between two adjacent light emitting portions 131, and can absorb ambient light or unnecessary reflected light, thereby ensuring the display effect of the display panel 100.
As shown in fig. 1 and 2, the first light shielding portion 132 is provided with a first through hole 1321, so that the light emitted by the light emitting portion 131 can pass through the light emitting layer 130 smoothly through the first through hole 1321 after being reflected, so as to facilitate the transmission of optical signals in the display panel 100.
The display panel 100 includes a color film layer 200, the color film layer 200 is disposed on a side of the light emitting layer 130 facing away from the substrate 110, the color film layer 200 includes a plurality of color resistors 201 disposed at intervals, and a second light shielding portion 202 disposed between two adjacent color resistors 201, where the color resistors 201 are disposed corresponding to the light emitting portions 131, that is, the display panel 100 in the embodiment of the application adopts a polarizer-free technology.
In this embodiment of the present application, the color resistors 201 include red color resistors, green color resistors and blue color resistors, where the color resistors 201 can function as a filter to allow light of a corresponding color to pass through; similarly, the light emitting portion 131 includes a red light emitting portion, a green light emitting portion, and a blue light emitting portion, and is disposed corresponding to the color resistors 201 of the corresponding colors, that is, the second light shielding portion 202 is disposed corresponding to the first light shielding portion 132, that is, the second light shielding portion 202 corresponds to the first light shielding portion 132 in the thickness direction of the display panel 100, so as to avoid color crosstalk of light emitted by the adjacent light emitting portion 131, and influence the display effect of the display panel 100.
The second light shielding portion 202 is provided with a second through hole 203, so that the light emitted by the light emitting portion 131 can sequentially pass through the second through hole 203 and the first through hole 1321 after being reflected, so as to facilitate the transmission of optical signals in the display panel 100. In addition, the front projection of the second through hole 203 on the substrate 110 and the front projection of the first through hole 1321 on the substrate 110 do not overlap, that is, the second through hole 203 and the first through hole 1321 are arranged in a staggered manner and do not overlap completely in the thickness direction of the display panel 100, so that the positions of the first light shielding portion 132 and the second light shielding portion 202 corresponding to the first through hole 1321 and the second through hole 203 can form light shielding complementation, and thus, in the state that the display panel 100 is out of screen, external ambient light can be prevented from entering the display panel 100 through the first through hole 1321 and the second through hole 203 to form a bright area, and the use experience of the display panel 100 is affected.
It should be noted that, the front projection of the first light shielding portion 132 on the substrate 110 covers the front projection of the second through hole 203 on the substrate 110, and the front projection of the second light shielding portion 202 on the substrate 110 covers the front projection of the first through hole 1321 on the substrate 110, so as to further realize the light shielding complementation of the first light shielding portion 132 and the second light shielding portion 202, and avoid the bright area in the state of extinguishing the display panel 100.
The display panel 100 includes a fingerprint sensing layer 230, where the fingerprint sensing layer 230 is disposed on a side of the substrate 110 facing away from the light emitting layer 130, i.e. the fingerprint sensing layer 230 is disposed on a backlight side of the light emitting layer 130; the fingerprint sensing layer 230 is configured to receive the light emitted by the light emitting portion 131, and then sequentially pass through the second through hole 203 and the first through hole 1321 after being reflected by the fingerprint 500, i.e. the fingerprint sensing layer 230 is configured to receive the fingerprint 500 information, so as to realize the fingerprint unlocking function of the display panel 100.
The fingerprint sensing layer 230 can be adhered to the substrate 110 by the adhesive layer 240, so as to facilitate flexible installation of the fingerprint sensing layer 230. The adhesive layer 240 may be made of a light-transmitting material, or an opening may be directly formed at a position corresponding to the sensing region of the fingerprint sensing layer 230, so that the light emitted by the light emitting portion 131 can sequentially pass through the second through hole 203 and the first through hole 1321 to be received by the fingerprint sensing layer 230 after being reflected by the fingerprint 500, thereby realizing the fingerprint unlocking function of the display panel 100.
It should be noted that, a cover plate layer 220 is disposed on a side of the color film layer 200 facing away from the light emitting layer 130, so as to protect functional structural layers such as the color film layer 200 and the light emitting layer 130. When the fingerprint is unlocked, the finger of a human body contacts the cover plate layer 220, the fingerprint 500 contacts one side of the cover plate layer 220 away from the color film layer 200, light emitted by the light emitting part 131 passes through the corresponding color resistor 201 and then is transmitted to the contact surface between the cover plate layer 220 and the fingerprint 500, then is reflected by the contact surface, sequentially passes through the second through hole 203 on the second light shielding part 202 and the first through hole 1321 on the first light shielding part 132, and then is received by the fingerprint sensing layer 230, and the fingerprint sensing layer 230 realizes unlocking according to the received optical information.
That is, in designing the relative positions of the first through hole 1321 and the second through hole 203, it is necessary to satisfy the reflection law of the light emitted from the light emitting portion 131 so that the relative positions of the first through hole 1321 and the second through hole 203 satisfy the fingerprint unlocking function of the display panel 100, in addition to ensuring the misalignment of the second through hole 203 and the first through hole 1321 in the thickness direction of the display panel 100.
In this embodiment, the display panel 100 includes a substrate 110, a light emitting layer 130, a color film layer 200 and a fingerprint sensing layer 230, where the light emitting layer 130 and the color film layer 200 are sequentially disposed on one side of the substrate 110, the fingerprint sensing layer 230 is disposed on the other side of the substrate 110, the light emitting layer 130 includes a plurality of light emitting portions 131 disposed at intervals, and a first light shielding portion 132 disposed between two adjacent light emitting portions 131, a first through hole 1321 is disposed on the first light shielding portion 132, the color film layer 200 includes a plurality of color resistors 201 disposed at intervals, and a second light shielding portion 202 disposed between two adjacent color resistors 201, the second light shielding portion 202 is disposed corresponding to the first light shielding portion 132, a second through hole 203 is disposed on the second light shielding portion 202, the orthographic projection of the second through hole 203 on the substrate 110 and the orthographic projection of the first through hole 1321 on the substrate 110 are not overlapped, and the fingerprint sensing layer 230 is configured to receive the light emitted by the light emitting portion 131 and reflected by the fingerprint 500 and then sequentially pass through the second through hole 203 and the first through hole 1321. This application is through setting up first through-hole 1321 and second through-hole 203 to non-overlapping, and the light that luminous portion 131 sent can be received by fingerprint sensing layer 230 through first through-hole 1321 and second through-hole 203 after the reflection for when satisfying fingerprint unblock demand, can avoid display panel 100 to appear the bright zone under the screen quenching state.
Optionally, as shown in fig. 2, at least two first through holes 1321 are formed on the first light shielding portion 132, the orthographic projection of the second through hole 203 on the substrate 110 is located between the orthographic projections of the two first through holes 1321 on the substrate 110, that is, in the thickness direction of the display panel 100, the first through holes 1321 are located at opposite sides of the second through holes 203, so that the light rays in different directions emitted by the light emitting portion 131 can smoothly pass through the second through holes 203 and the corresponding first through holes 1321 after being reflected, so as to improve the accuracy and sensitivity of fingerprint unlocking of the display panel 100.
In some embodiments, the first light shielding portion 132 is provided with a plurality of first through holes 1321, and the orthographic projections of the plurality of first through holes 1321 on the substrate 110 are symmetrically distributed with respect to the orthographic projections of the second through holes 203 on the substrate 110, that is, the first through holes 1321 are uniformly distributed with respect to the second through holes 203 in the thickness direction of the display panel 100, so that the light rays in different directions emitted by the light emitting portion 131 can uniformly pass through the corresponding first through holes 1321 after being reflected and passing through the second through holes 203, so as to improve the uniformity of the optical signals received by different areas of the fingerprint sensing layer 230, thereby helping to improve the fingerprint unlocking efficiency of the display panel 100.
Optionally, as shown in fig. 2, the display panel 100 further includes a first optical film layer 190 and a second optical film layer 210, where the first optical film layer 190 is located on a side of the color film layer 200 facing the light emitting layer 130, and the second optical film layer 210 is located on a side of the color film layer 200 facing away from the light emitting layer 130, that is, the first optical film layer 190 and the second optical film layer 210 are located on opposite sides of the color film layer 200.
The first optical film layer 190 is provided with a third through hole 191 corresponding to the second through hole 203, the second optical film layer 210 fills the second through hole 203 and the third through hole 191, a first interface 192 is formed on one side of the second optical film layer 210 and the first optical film layer 190 facing the color film layer 200, a second interface 193 is formed on the side wall of the second optical film layer 210 and the side wall of the third through hole 191, namely, the first interface 192 is a horizontal interface, and the second interface 193 is an inclined interface.
The refractive index of the second optical film layer 210 is smaller than that of the first optical film layer 190, so that the light emitted by the light emitting portion 131 passes through the first interface 192 after being reflected by the fingerprint 500, and passes through the first through hole 1321 after being reflected by the second interface 193. That is, since the refractive index of the second optical film layer 210 is smaller than that of the first optical film layer 190, even the refractive index of the second optical film layer 210 is much smaller than that of the first optical film layer 190, the light emitted from the light emitting portion 131 enters the second optical film layer 210 after being reflected by the fingerprint 500 and passes through the second through hole 203 to reach the first interface 192, enters the first optical film layer 190 from the second optical film layer 210 through the first interface 192, and when the light is transmitted to the second interface 193, total reflection occurs at the second interface 193, so that the reflected light passes through the first through hole 1321 on the first light shielding portion 132 and is received by the fingerprint sensing layer 230.
In this embodiment, by setting the first optical film layer 190 and the second optical film layer 210 and utilizing the total reflection effect of the second interface 193 formed by the first optical film layer 190 and the second optical film layer 210, more reflected light rays can pass through the second through hole 203 and then smoothly pass through the first through hole 1321 instead of being directly absorbed by the first light shielding portion 132, thereby improving the utilization rate of the reflected light rays and further improving the fingerprint unlocking efficiency of the display panel 100.
The orthographic projection of the third through hole 191 on the substrate 110 and the orthographic projection of the first through hole 1321 on the substrate 110 are not overlapped, that is, the third through hole 191 and the first through hole 1321 are arranged in a staggered manner and are not overlapped at all in the thickness direction of the display panel 100, and the third through hole 191 and the second through hole 203 are correspondingly arranged and are mutually communicated, so that the first light shielding portion 132 and the second light shielding portion 202 can still form light shielding complementation, and thus, external ambient light can be prevented from entering the display panel 100 through the first through hole 1321, the second through hole 203 and the third through hole 191 to form a bright area in the state of extinguishing the display panel 100, and the use experience of the display panel 100 is affected.
Alternatively, as shown in fig. 2, a side of the second through hole 203 facing the third through hole 191 forms a first opening 204, a side of the third through hole 191 facing the second through hole 203 forms a second opening 1911, and a side of the third through hole 191 facing away from the second through hole 203 forms a third opening 1912. Wherein, the opening area of the second opening 1911 is smaller than the opening area of the first opening 204, that is, when the second opening 1911 and the first opening 204 are circular, the diameter of the second opening 1911 is smaller than the diameter of the first opening 204, so that the reflected light enters the first optical film 190 from the second optical film 210 through the first interface 192.
Meanwhile, the opening area of the third opening 1912 is smaller than or equal to the opening area of the first opening 204, and the opening area of the third opening 1912 is larger than or equal to the opening area of the second opening 1911, that is, when the third opening 1912 and the first opening 204 are circular, the diameter of the third opening 1912 is smaller than or equal to the diameter of the first opening 204, and the diameter of the third opening 1912 is larger than or equal to the diameter of the second opening 1911, that is, the orthographic projection of the second through hole 203 on the substrate 110 covers the orthographic projection of the third through hole 191 on the substrate 110.
That is, the second interface 193 is perpendicular to the first interface 192 or has an acute angle, i.e. the cross section of the third through hole 191 has a trapezoid structure, and the structural design is beneficial to enabling the reflected light to be directly received by the fingerprint sensing layer 230 through the first optical film layer 190 through the first interface 192 or to be received by the fingerprint sensing layer 230 through the total reflection effect of the second interface 193, thereby further improving the utilization rate of the reflected light and improving the fingerprint unlocking efficiency of the display panel 100.
In some embodiments, the second interface 193 is angled from the first interface 192 by greater than or equal to 50 ° and less than or equal to 90 °. If the angle between the second interface 193 and the first interface 192 is too large, the light is reflected by the second interface 193 and then directly enters the first light shielding portion 132 opposite to the second through hole 203 to be absorbed; if the angle between the second interface 193 and the first interface 192 is too small, the light reflected by the second interface 193 is deviated from the first through hole 1321 toward another direction, and cannot be received by the fingerprint sensing layer 230.
In the actual manufacturing process, the included angle between the second interface 193 and the first interface 192 may be set to be 50 °, 60 °, 70 °, 80 ° or 90 °, and the like, which is only required to ensure that the setting of the included angle can improve the utilization rate of the reflected light, and improve the fingerprint unlocking efficiency of the display panel 100, which is not particularly limited herein.
In other embodiments, the difference between the refractive index of the first optical film layer 190 and the refractive index of the second optical film layer 210 is greater than or equal to 0.1 and less than or equal to 0.4. If the difference between the refractive index of the first optical film layer 190 and the refractive index of the second optical film layer 210 is too small, total reflection of light at the second interface 193 cannot be achieved; if the difference between the refractive index of the first optical film layer 190 and the refractive index of the second optical film layer 210 is too large, the selection of the first optical film layer 190 and the second optical film layer 210 is not facilitated, and the production cost of the display panel 100 is increased.
In the actual manufacturing process, the difference between the refractive index of the first optical film layer 190 and the refractive index of the second optical film layer 210 can be set to 0.1, 0.2, 0.3, or 0.4, which is only required to ensure that the total reflection of the light at the second interface 193 can be achieved, and the present invention is not limited thereto.
In still other embodiments, the orthographic projections of the first through hole 1321, the second through hole 203 and the third through hole 191 on the substrate 110 are located in the orthographic projection of the fingerprint sensing layer 230 on the substrate 110, that is, the first through hole 1321, the second through hole 203 and the third through hole 191 correspond to the arrangement positions of the fingerprint sensing layer 230, that is, in the thickness direction of the display panel 100, the corresponding first light shielding portion 132, the second light shielding portion 202 and the first optical film layer 190 are provided with the first through hole 1321, the second through hole 203 and the third through hole 191, so that the light emitted by the light emitting portion 131 can be fully received by the fingerprint sensing layer 230 after being reflected by the fingerprint 500, and not be directly emitted from other areas, thereby ensuring the normal use of the display panel 100.
Optionally, the display panel 100 further includes an array layer 120 and an anode layer 140 disposed between the substrate 110 and the light emitting layer 130, the array layer 120 includes a plurality of thin film transistors, the anode layer 140 includes a plurality of anodes, the plurality of thin film transistors and the plurality of anodes are in one-to-one correspondence with the plurality of light emitting portions 131, the anodes are disposed between two adjacent first light shielding portions 132, and the thin film transistors are correspondingly electrically connected with the anodes to control conduction of signals on the corresponding anodes, thereby controlling the corresponding light emitting portions 131 to emit light.
A light emitting common layer 150, a cathode layer 160, an encapsulation layer 170, and a touch layer 180 are sequentially disposed between the light emitting layer 130 and the first optical film layer 190 in a direction away from the substrate 110. The light-emitting common layer 150 is used for improving charge conduction between the light-emitting portion 131 and the cathode layer 160, and the cathode layer 160 and the anode layer 140 together control light emission of the corresponding light-emitting portion 131 so as to regulate and control the display mode of the display panel 100. The encapsulation layer 170 is used for encapsulating and protecting the functional structure layers such as the light-emitting layer 130 and the array layer 120 in the display panel 100, so as to prevent the light-emitting layer 130 from being damaged due to the invasion of air or moisture in the external environment into the display panel 100, thereby affecting the normal use of the display panel 100.
The touch control layer 180 is provided with a touch control pattern, so as to realize a touch control function of the display panel 100, specifically, the touch control layer 180 can adopt a self-capacitance mode or a mutual capacitance mode, and the touch control pattern on the touch control layer 180 avoids the second through hole 203 on the color film layer 200 and the third through hole 191 on the first optical film layer 190, so that interference to light transmission in a fingerprint unlocking process is avoided, and meanwhile, the touch control pattern can be prevented from being visible in a non-display state, thereby influencing the use experience of the display panel 100.
Secondly, the embodiment of the present application further provides a display device, where the display device includes a display panel, and the specific structure of the display panel refers to the foregoing embodiments, and since the display device adopts all the technical solutions of all the foregoing embodiments, at least the display device has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described herein in detail.
As shown in fig. 3, the display device 10 includes a display panel 100, a control circuit 300, and a housing 400. The casing 400 is connected to the display panel 100 to support and fix the display panel 100, the control circuit 300 is disposed in the casing 400, and the control circuit 300 is electrically connected to the display panel 100 to control the display panel 100 to display a picture.
The display panel 100 may be fixed to the case 400, and formed as a unit with the case 400, and the display panel 100 and the case 400 form a closed space for accommodating the control circuit 300. The control circuit 300 may be a motherboard of the display device 10, and meanwhile, one or more functional components such as a battery, an antenna structure, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, and a processor may be integrated on the control circuit 300, so that the display device 10 can be adapted to various application fields.
Specifically, the display panel 100 includes a substrate 110, a light emitting layer 130, a color film layer 200 and a fingerprint sensing layer 230, where the light emitting layer 130 and the color film layer 200 are sequentially disposed on one side of the substrate 110, the fingerprint sensing layer 230 is disposed on the other side of the substrate 110, the light emitting layer 130 includes a plurality of light emitting portions 131 disposed at intervals, and a first light shielding portion 132 disposed between two adjacent light emitting portions 131, a first through hole 1321 is formed in the first light shielding portion 132, the color film layer 200 includes a plurality of color resistors 201 disposed at intervals, and a second light shielding portion 202 disposed between two adjacent color resistors 201, the second light shielding portion 202 is disposed corresponding to the first light shielding portion 132, a second through hole 203 is formed in the second light shielding portion 202, the orthographic projection of the second through hole 203 on the substrate 110 and the orthographic projection of the first through hole 1321 on the substrate 110 are not overlapped, and the fingerprint sensing layer 230 is used for receiving the reflected light emitted by the light emitting portion 131 after being reflected by the fingerprint 500 and sequentially passing through the second through hole 203 and the first through hole 1321. This application is through setting up first through-hole 1321 and second through-hole 203 to non-overlapping, and the light that luminous portion 131 sent can be received by fingerprint sensing layer 230 through first through-hole 1321 and second through-hole 203 after the reflection for when satisfying fingerprint unblock demand, can avoid display panel 100 to appear the bright zone under the screen quenching state.
The foregoing has described in detail a display panel and a display device provided by embodiments of the present application, and specific examples have been applied herein to illustrate the principles and embodiments of the present application, where the foregoing examples are provided to assist in understanding the methods and core ideas of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims (10)

1. A display panel, comprising:
a substrate base;
the light-emitting layer is arranged on the substrate base plate and comprises a plurality of light-emitting parts which are arranged at intervals and a first shading part which is positioned between two adjacent light-emitting parts; a first through hole is formed in the first shading part;
the color film layer is arranged on one side, away from the substrate, of the light-emitting layer, and comprises a plurality of color resistors arranged at intervals and a second shading part arranged between two adjacent color resistors; the second shading part is provided with a second through hole, and the orthographic projection of the second through hole on the substrate is not overlapped with the orthographic projection of the first through hole on the substrate;
the fingerprint sensing layer is arranged on one side, deviating from the light-emitting layer, of the substrate base plate, and is used for receiving reflected light rays which sequentially pass through the second through hole and the first through hole after being reflected by fingerprints, wherein the light rays are emitted by the light-emitting part.
2. The display panel according to claim 1, wherein at least two first through holes are formed in the first light shielding portion, and orthographic projections of the second through holes on the substrate are located between orthographic projections of the two first through holes on the substrate.
3. The display panel according to claim 1 or 2, wherein the first light shielding portion is provided with a plurality of first through holes, and orthographic projections of the plurality of first through holes on the substrate are symmetrically distributed with respect to orthographic projections of the second through holes on the substrate.
4. The display panel of claim 1, wherein the display panel comprises:
the first optical film layer is positioned on one side of the color film layer facing the light-emitting layer, and a third through hole is formed in the first optical film layer at a position corresponding to the second through hole;
the second optical film layer is positioned at one side of the color film layer, which is away from the light-emitting layer, and fills the second through hole and the third through hole; the second optical film layer and one side of the first optical film layer facing the color film layer form a first interface, and the second optical film layer and the side wall of the third through hole form a second interface;
the refractive index of the second optical film layer is smaller than that of the first optical film layer, so that light rays emitted by the light emitting part pass through the first interface after being reflected by fingerprints and pass through the first through hole after being reflected by the second interface.
5. The display panel of claim 4, wherein an orthographic projection of the third via on the substrate does not overlap an orthographic projection of the first via on the substrate.
6. The display panel according to claim 4, wherein a side of the second through hole facing the third through hole forms a first opening, a side of the third through hole facing the second through hole forms a second opening, and a side of the third through hole facing away from the second through hole forms a third opening; the opening area of the second opening is smaller than the opening area of the first opening, the opening area of the third opening is smaller than or equal to the opening area of the first opening, and the opening area of the third opening is larger than or equal to the opening area of the second opening.
7. The display panel of any one of claims 4 to 6, wherein the second interface is at an angle to the first interface; the included angle is greater than or equal to 50 degrees and less than or equal to 90 degrees.
8. The display panel according to any one of claims 4 to 6, wherein a difference between a refractive index of the first optical film layer and a refractive index of the second optical film layer is greater than or equal to 0.1 and less than or equal to 0.4.
9. The display panel of any one of claims 4 to 6, wherein orthographic projections of the first, second and third through holes on the substrate are located within orthographic projections of the fingerprint sensing layer on the substrate.
10. A display device comprising the display panel according to any one of claims 1 to 9.
CN202310995309.8A 2023-08-08 2023-08-08 Display panel and display device Pending CN117479733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310995309.8A CN117479733A (en) 2023-08-08 2023-08-08 Display panel and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310995309.8A CN117479733A (en) 2023-08-08 2023-08-08 Display panel and display device

Publications (1)

Publication Number Publication Date
CN117479733A true CN117479733A (en) 2024-01-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310995309.8A Pending CN117479733A (en) 2023-08-08 2023-08-08 Display panel and display device

Country Status (1)

Country Link
CN (1) CN117479733A (en)

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