CN116594211A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN116594211A
CN116594211A CN202310465653.6A CN202310465653A CN116594211A CN 116594211 A CN116594211 A CN 116594211A CN 202310465653 A CN202310465653 A CN 202310465653A CN 116594211 A CN116594211 A CN 116594211A
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CN
China
Prior art keywords
display area
display panel
display
substrate
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
CN202310465653.6A
Other languages
Chinese (zh)
Inventor
曾泽村
方涛
范文丽
张天峰
林文源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Fuzhou BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Fuzhou BOE Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Fuzhou BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN202310465653.6A priority Critical patent/CN116594211A/en
Publication of CN116594211A publication Critical patent/CN116594211A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133334—Electromagnetic shields
    • 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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136204—Arrangements to prevent high voltage or static electricity failures
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application discloses a display panel and a display device, the display panel includes: the color film display device comprises a color film substrate, a counter substrate, a touch layer and a metal wiring layer, wherein the color film substrate and the counter substrate are oppositely arranged and comprise a display area and a peripheral area which at least partially surrounds the display area, the display area is correspondingly arranged, one side of the counter substrate is the light emitting side of the display panel, the touch layer and the metal wiring layer are arranged on one side of the counter substrate facing the color film substrate, the touch layer is positioned in the display area, and the metal wiring layer is positioned in the peripheral area; the display panel comprises a shading piece, wherein the shading piece is configured to shade light rays reflected by the metal wiring layer from being emitted. Therefore, the metal bright color of the metal wiring layer can be effectively shielded, and the display effect of the display panel is improved.

Description

Display panel and display device
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
In recent years, touch technology is increasingly applied to display devices with various sizes, and a touch display panel is used as a display panel of a novel man-machine interaction input mode, so that compared with the traditional modes of display, keyboard and mouse input, the touch screen input is simpler, more direct and more convenient. The large-size touch display panel is widely applied to intelligent digital construction aspects such as intelligent classrooms, large conferences and the like. Touch panels are mainly classified into full-Film (GFF) and fully embedded (FIC) display panels. The display panel and the touch control unit of the full-lamination display panel are two relatively independent devices, and the two devices are integrated through a rear-end lamination process. The embedded display panel embeds the touch control unit into the display panel, so that the two devices are integrated into a whole, and the two relatively independent devices are not needed any more, so that the whole thickness of the module can be reduced, and the manufacturing cost of the display panel can be greatly reduced, thereby being favored.
The conventional touch display panel still has the problem of poor display effect and needs to be further improved.
Disclosure of Invention
The application provides a back frame structure for a display panel and a display device, which are used for solving or relieving one or more technical problems in the related art.
As a first aspect of the embodiments of the present application, the present application provides a display panel. The display panel includes: the color film display device comprises a color film substrate, a counter substrate, a touch layer and a metal wiring layer, wherein the color film substrate and the counter substrate are oppositely arranged and comprise a display area and a peripheral area which at least partially surrounds the display area, the display area is correspondingly arranged, one side of the counter substrate is the light emitting side of the display panel, the touch layer and the metal wiring layer are arranged on one side of the counter substrate facing the color film substrate, the touch layer is positioned in the display area, and the metal wiring layer is positioned in the peripheral area; the display panel comprises a shading piece, wherein the shading piece is configured to shade light rays reflected by the metal wiring layer from being emitted.
In one embodiment, the light shielding member includes a frame surrounding a side portion of the display panel and extending to an edge of a side surface of the opposite substrate away from the touch layer; the color film substrate comprises a first display area and a second display area which at least partially surrounds the first display area, the front projection of the frame on the color film substrate covers the peripheral area and at least part of the second display area, pixel units are arranged in the first display area and the second display area, and the pixel units comprise a plurality of color blocks.
In one embodiment, the aperture ratio of the pixel structure in the second display area is smaller than the aperture ratio of the pixel structure in the first display area.
In one embodiment, the pixel unit includes a black matrix between the color blocks, the width of the black matrix between adjacent color blocks in the first display area is m, and the width of the black matrix between adjacent color blocks in the second display area is n, where m is smaller than n.
In one embodiment, the pixel unit in the second display area includes a black matrix layer, and the black matrix layer is located between the color block in the second display area and the substrate of the color film substrate.
In one embodiment, the display device further comprises a liquid crystal layer, wherein the liquid crystal layer is positioned between the color film substrate and the opposite substrate, and the liquid crystal layer is provided with a supporting structure at a position corresponding to the second display area.
In one embodiment, the pixel units in the first display area are electrically connected to the metal wiring layer, and the pixel units in the second display area are not electrically connected to the metal wiring layer.
In one embodiment, the width of the second display area is greater than or equal to 1.7mm in a direction from the first display area to the peripheral area.
In one embodiment, further comprising: the first polaroid is positioned on the surface of one side of the opposite substrate far away from the color film substrate; the second polaroid is positioned on the surface of one side of the color film substrate, which is far away from the opposite substrate.
In one embodiment, the light shielding member includes a first polarizer including a first polarizer substrate and an edge light shielding layer disposed at least partially around the first polarizer substrate, and an orthographic projection of the edge light shielding layer on the opposite substrate at least covers an orthographic projection of the metal routing layer on the opposite substrate.
In one embodiment, a transparent conductive layer is disposed on a surface of the color film substrate away from the opposite substrate, and an anti-reflection layer is disposed on a side of the opposite substrate away from the color film substrate.
As a second aspect of the embodiments of the present application, the present application provides a display device including the display panel described above.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will become apparent by reference to the drawings and the following detailed description.
Drawings
In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the application and are not therefore to be considered limiting of its scope.
Fig. 1 shows a schematic structure of a display panel according to an embodiment of the present application;
fig. 2 is a schematic view showing a partial structure of a display panel according to an embodiment of the present application;
fig. 3 is a schematic view showing a partial structure of a display panel according to still another embodiment of the present application;
FIG. 4 shows a partial enlarged view of the display panel of FIG. 3;
FIG. 5 shows a schematic top view of a display panel according to one embodiment of the application;
fig. 6 is a schematic structural view showing a display panel according to still another embodiment of the present application;
FIG. 7 illustrates a schematic structure of a first polarizer according to an embodiment of the present application;
FIG. 8 is a schematic top view of a display panel according to yet another embodiment of the application;
fig. 9 is a schematic view showing the structure of a display panel according to an embodiment of the present application;
fig. 10 is a schematic structural view of a display panel according to another embodiment of the present application.
Reference numerals illustrate:
10: a display area; 11: a first display area; 12: a second display area; 20: a peripheral region; 30: a frame; 100: a color film substrate; color block: 121; black matrix layer: 122, a step of; 00: a liquid crystal layer; 300: an opposite substrate; 310: a metal wiring layer; 320: a touch layer; 410: a first polarizer; 411: a first polarizer substrate; 412: an edge light shielding layer; 413: a first support layer; 414: a pressure-sensitive adhesive layer; 415: a second support layer; 416: a functional layer; 420: and a second polarizer.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways, and the different embodiments may be combined arbitrarily without conflict, without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
The present application has been made based on the findings and knowledge of the inventors regarding the following facts and problems:
in a related art display panel, particularly in an in-Cell touch strategy (Full in Cell) applied to a Liquid Crystal Display (LCD), a touch layer is disposed on a side of a color film substrate facing a counter substrate, that is, the side of the color film substrate is a side of the display panel for controlling and displaying, and a high-impedance film, such as a film with a square resistance of up to 108Ω/∈s, is disposed on a side of the color film substrate away from the counter substrate, and is connected to a grounding point of an electrode edge through a silver paste point, so as to realize an electrostatic shielding effect. Or a low-resistance polaroid is arranged on the side of the color film substrate far away from the opposite substrate to replace a conventional transparent conductive layer, such as a polaroid with square resistance reaching 108-109 omega/≡so as to realize the electrostatic shielding effect.
The inventor found that when the high-impedance film is disposed on the side of the color film substrate away from the opposite substrate to realize electrostatic shielding, the high-impedance film has poor adhesion, is easy to fall off from the color film substrate when the color film substrate is subjected to a cleaning process, and if the cleaning process is omitted, foreign matters are easy to appear on the polarizer, thereby affecting the display effect. When the high-impedance film is arranged on the side of the color film substrate far away from the opposite substrate to realize electrostatic shielding, the medium-and large-size polaroid has lower reliability and higher manufacturing cost, and is not beneficial to large-scale production and application. In addition, in order to prevent the color film substrate from being far away from the transparent conductive layer on the surface of one side of the opposite substrate to adversely affect the touch performance of the display panel, taking the color film substrate side as an embedded display panel on the display and touch side as an example, the color film substrate outer surface of the display panel is not provided with the transparent conductive layer, so that the electrostatic shielding effect cannot be realized, and the display effect is seriously affected.
In the application, the touch control layer is arranged on the side of the opposite substrate facing the color film substrate, namely the opposite substrate side is the side of the display panel for controlling and displaying (light emitting side), so that the compressive strength of the display panel can be remarkably improved, and the touch effect and the display effect of the display panel can be improved. The color film substrate is far away from the surface of one side of the opposite substrate, a conventional polaroid can be adopted, each size has higher reliability, the manufacturing cost is lower, popularization and use are facilitated, and the outer surface of the color film substrate can be provided with a transparent conductive layer because the color film substrate side is not one side of the display panel for touch control and display, so that the electrostatic shielding effect can be realized.
Further, the inventor found that when the touch layer is disposed on the side of the opposite substrate facing the color film substrate, that is, the opposite substrate side is the side of the display panel for manipulation and display, since the peripheral region 20 of the opposite substrate is provided with the metal wiring layer, the metal material forming the metal wiring layer has a higher reflectivity, so that the metal wiring layer reflects light toward the user side, the peripheral region of the display panel has a reflective effect, and the metallic color of the exposed metal wiring layer greatly influences the appearance of the display panel product.
The present application aims to alleviate or solve at least some of the above mentioned problems.
In one aspect of the present application, a display panel is provided. Referring to fig. 1 and 2, the display panel includes: the color film substrate 100 and the opposite substrate 300 are oppositely arranged, and the opposite substrate 300 comprises a display area 10 and a peripheral area 20 at least partially surrounding the display area 10. The touch layer 320 is located on a side surface of the opposite substrate 300 facing the color film substrate 100, the touch layer 320 is located in the display area 10, the metal trace layer 310 is located on a side surface of the opposite substrate 300 facing the color film substrate 100, and the metal trace layer 310 is located in the peripheral area 20. The light shielding member, such as the bezel 30 shown in fig. 1, is configured to shield light reflected by the metal routing layer from exiting from the light exit side. The arrangement of the shading piece can effectively shade the metal color reflected by the metal wiring layer 310, so that the display effect of the display panel is improved.
The display panel may further include a liquid crystal layer 200, where the liquid crystal layer 200 is located between the color film substrate 100 and the opposite substrate 300.
According to some embodiments of the present application, referring to fig. 1 and 2, a side surface of the color film substrate 100 facing the opposite substrate 300 has a plurality of pixel units, the pixel units are located in the display area 10, and a side of the opposite substrate 300 has a driving structure for driving the liquid crystal layer corresponding to the pixel units, such as various metal wirings, transistors, storage capacitors, and the like. The liquid crystal layer 200 includes a liquid crystal body and a supporting structure forming an accommodating space, and the liquid crystal body is located in the accommodating space. The touch layer 320 is disposed on a surface of the opposite substrate 300 facing the color film substrate 100.
In the description of the present application, "plurality" means two or more.
According to some embodiments of the application, referring to fig. 1, 5 and 9, fig. 10, the shield includes a bezel 30. The frame 30 surrounds the side of the display panel and extends to the edge of the side surface of the opposite substrate away from the touch layer. By having the bezel 30 cover the metal routing layer 310, shielding of the metal routing layer 310 from metallic bright colors can be achieved.
In the description of the present application, the terms "first", "second" are used in this specification for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The "first feature" and "second feature" may include one or more of the features.
The inventors found that the display panel having the bezel 30 is liable to suffer from peripheral image quality failure such as peripheral image quality yellowing. One of the reasons for this is that the thickness of the color film substrate on one side is different from that of the first display area, so that the display panel is warped when the frame 30 is pressed against the surface of the array substrate on one side. Thus, in some embodiments, referring to fig. 3, 5 and 9, the display region 10 may include a first display region 11 and a second display region 12 at least partially surrounding the first display region 11, and pixel units are disposed in the second display region to increase a transition area between the peripheral region and the display region, thereby alleviating the above-mentioned disadvantages.
In some embodiments, which do not have a special requirement for the width of the bezel area, a Pixel unit for serving as a Dummy Pixel (Dummy Pixel) may be provided in the second display area. The pixel units in the second display area 12 may have the same structure as the pixel units in the first display area 11, but the pixel units in the first display area 11 are electrically connected with the metal wiring layer 310, that is, the sub-pixels in the first display area 11 are used for realizing normal light emitting display, and the pixel units in the second display area 12 may not be electrically connected with the metal wiring layer 310, that is, the sub-pixels in the second display area 12 do not have the light emitting display effect, and the second display area only serves as a transition structure between the peripheral area 20 and the first display area 11. The arrangement of the frame can not only shield the metal bright color reflected by the metal wiring layer, but also can not influence the display effect of the first display area, thereby improving the display effect of the display panel.
According to some embodiments of the present application, the pixel units in the first display area may be completely consistent with the pixel units in the second display area, that is, the pixel units in the first display area 11 and the second display area 12 may be formed by one process, only the pixel units in the second display area are not electrically connected to the metal routing layer. The pixel unit formed by one process can effectively reduce Mura defects generated by the difference of each area in the friction alignment process. In some embodiments, referring to fig. 9, in order to further improve the uniformity of the structures of the first and second display areas, the color block 121 of the pixel unit in the second display area 12 may be disposed above the black matrix layer 122. Therefore, the height in the second display area 12 is kept relatively consistent with the height of the first display area 11, and the whole panel is prevented from being warped due to the reduced thickness and the pressure of the frame at the second display area 12. In particular, in some embodiments, the width of the frame region is not particularly limited by the structure of the pixel units in the second display area 12, so that the same mask plate or other structures as those of the first display area 11 can be used to form the color block, and no openings are required to be arranged on the black matrix layer in the second display area 12. Therefore, the production process can be further simplified, and the production cost can be saved.
In the present application, for a display panel with a narrow frame, the other factor causing the above-mentioned color stripe defect is that the area of the display panel that can be used to accommodate the frame 30 is smaller, and the frame 30 is easy to cover the display area 10 of the display panel, and meanwhile, due to the influence of the process precision and the assembly precision of the size of the frame 30, the coverage sizes of different areas of the frame 30 on the display area 10 are inconsistent, and further, the edge pixels of the display area 10 are missing due to the coverage of the frame to different degrees. At this time, due to the partial missing of the sub-pixels, the color mixing of the sub-pixels is uneven, so that color stripes appear on the display panel during display. Referring to fig. 3, 5 and 10, the display area 10 may also include a first display area 11 and a second display area 12 at least partially surrounding the first display area 11, and an orthographic projection of the bezel 30 on the opposite substrate 300 covers the peripheral area and at least part of the second display area 12. The second display area may be provided therein with pixel units for display, and a buffer area is provided between the first display area and the peripheral area, thereby alleviating display failure due to the absence of a sub-pixel portion or the like.
In some embodiments of the present application, the severity of color fringing may be reduced by reducing the aperture ratio of pixel elements within the display area covered by bezel 30. Specifically, referring to fig. 4 and 10, the pixel units (shown as a dotted line frame in the drawing) in the first and second display areas may include a color block (shown as R, G, B in fig. 4) and a black matrix surrounding the color block (the black matrix in the first display area 11 is not shown in fig. 10). The width of the black matrix in the second display region 12 can be enlarged, and the aperture ratio of the pixel units in the second display region can be reduced. Specifically, referring to fig. 4, let the area ratio of the black matrix of the pixel structure in the first display area 11 be a, the area ratio of the black matrix of the pixel structure in the second display area 12 be b, and control a to be smaller than b. By adjusting the area ratio of the black matrix in the second display area 12, the aperture ratio of the pixels in the second display area 12 is smaller than that of the pixels in the first display area 11, so as to weaken the color stripe formed by uneven color mixing of partial sub-pixels due to the coverage of the frame on the display area 10. In addition, the change of the aperture ratio will affect the backlight transmittance of the pixel unit, so that the pixel brightness in the second display area 12 can be reduced from the gray-scale brightness L255 to the gray-scale brightness L158, and the color stripe phenomenon of the display area around the display panel can be effectively reduced.
According to some embodiments of the present application, the method of making the aperture ratio of the second display area 12 smaller than that of the first display area 11 is not particularly limited. For example, a plurality of groups of pixel structures with larger black matrix width can be designed in the second display area, so that the aperture ratio of the pixels in the second display area is reduced, the brightness of the pixels is reduced, and the weakening effect of the color stripes is realized. Referring to fig. 4, the width of the black matrix between adjacent color blocks in the first display area 11 is m, and the width of the black matrix between adjacent color blocks in the second display area 12 is n, where m is smaller than n, so that the aperture ratio of pixels in the second display area can be reduced, color stripe defect caused by covering the display area by the frame 30 can be relieved, and the display effect of the display panel can be improved.
In the description of the present application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
According to some embodiments of the present application, the number of pixel units in the second display area is not particularly limited, as long as it is enough for the bezel 30 to cover the metal routing layer while falling within the second display area 12. The number of color blocks is determined according to the size of the sub-pixels and the assembly accuracy of the frame 30. Specifically, the number of color blocks×the size of color blocks=the assembly accuracy of the frame. Wherein, assembly accuracy of frame= (alignment accuracy of frame + dimensional accuracy of frame) ×2+ guarantees the width of the invisible metallic color of oblique angle.
According to some embodiments of the application, when the width of the frame is determined, the optimal pixel arrangement scheme of the second display area is determined accordingly. Specifically, when the width of the frame 30 is less than or equal to the sum of the widths of the peripheral area 20 and the second display area 12, the pixel aperture ratio of the second display area 12 may be made smaller than the pixel aperture ratio of the first display area 11, or the pixel units in the second display area 12 may be set to have the same structure as the pixel units in the first display area 11, and the pixel units in the second display area are not electrically connected; when the width of the frame 30 is greater than the sum of the widths of the peripheral area 20 and the second display area 12, the pixel units in the second display area 12 may be set to have the same structure as the pixel units in the first display area 11, and the pixel units in the second display area are not electrically connected, and the aperture ratio of the edge pixel units in the first display area 11 close to the second display area 12 should be reduced to reduce the color stripe defect of the peripheral display area of the display panel caused by the coverage of the frame on the first display area.
According to some embodiments of the present application, the width of the second display area 12 is not particularly limited, as long as it enables the bezel 30 to fall within the second display area 12. For example, the width of the second display area 12 may be greater than or equal to 1.7mm in the direction from the first display area 11 to the peripheral area 20. Specifically, the assembly accuracy of the bezel 30= (alignment accuracy of the bezel + dimensional accuracy of the bezel) ×2+ ensures the width of the invisible metallic color of the oblique angle, the alignment accuracy of the bezel is 0.1mm, the dimensional accuracy of the bezel is 0.3mm, and when the gap between the bezel and the display panel in the thickness direction is 0.5mm, the width of the invisible metallic color of the oblique angle is 0.9mm. According to other embodiments of the present application, as the gap between the bezel and the display panel in the thickness direction increases, the assembly accuracy of the bezel 30 should correspondingly increase, and the width of the second display area 12 should correspondingly increase, for example, when the gap between the bezel and the display panel in the thickness direction is 1.2mm, the width of the second display area is greater than or equal to 2.8mm.
In the description of the present application, all numbers disclosed herein are approximate, whether or not words of "about" or "about" are used. The numerical value of each number may vary by less than 10% or reasonably as considered by those skilled in the art, such as 1%, 2%, 3%, 4% or 5%.
According to some embodiments of the present application, to further maintain uniformity of thicknesses of the first and second display regions, the liquid crystal layer may also have a supporting structure at a location corresponding to the second display region. When the supporting structure is not arranged in the second display area and the width of the second display area is larger, the internal structure of the display panel positioned in the second display area is lack of support, the structural stability is poor, and the display panel is easy to have the problems of blue and black color around the display area. When the support structure is arranged in the second display area, the second display area becomes a frame placement area and can also provide internal support for the display panel of the second display area, so that the image quality of the peripheral area of the display panel is improved.
According to some embodiments of the present application, referring to fig. 6, the display panel may further include a first polarizer 410 and a second polarizer 420. The first polarizer 410 is located on a side surface of the opposite substrate 300 away from the color film substrate 100, and the second polarizer 420 is located on a side surface of the color film substrate 100 away from the opposite substrate 300. The polarization direction of the emergent light of the backlight source can be controlled through the arrangement of the polaroid, so that the display effect of the display panel is improved. According to other embodiments of the present application, neither the first polarizer 410 nor the second polarizer 420 is particularly limited, for example, the first polarizer and the second polarizer each independently include at least one of a conventional polarizer and a low reflection polarizer, and specifically, the reflectivity of the conventional polarizer is about 9% and the reflectivity of the low reflection polarizer is about 6%. Further, the low-reflection polaroid is provided with the coating with 1/4 optical path added on the surface of the polaroid, so that the reflected light on the surface of the coating is counteracted with the reflected light at the interface between the coating and the polaroid, the reflected light is reduced, and low reflection is realized.
According to some embodiments of the present application, for a three-sided or four-sided borderless display panel, which does not have a bezel structure, metallic color shading of the borderless display panel can be achieved by improving the first polarizer 410 on the side of the opposite substrate 300 away from the color film substrate 100. Specifically, referring to fig. 7 and 8, the light shielding member may include a first polarizer 410, where the first polarizer 410 includes a first polarizer 410 substrate and an edge light shielding layer 412, the edge light shielding layer 412 is at least partially disposed around the first polarizer substrate 411, and the front projection of the edge light shielding layer 412 on the opposite substrate 300 at least covers the front projection of the metal routing layer 310 on the opposite substrate 300. The edge light shielding layer 412 is built in the first polarizer substrate 411, and the edge light shielding layer 412 of the first polarizer 410 is used as a black edge, so that the metal wiring layer 310 is shielded, the metal bright color of the metal wiring layer is prevented from being emitted from the opposite substrate side, and the structure of the display panel can be simplified by reducing the arrangement of the frame.
According to some embodiments of the present application, the structure of the first polarizer is not particularly limited, for example, referring to fig. 8, the first polarizer may include a pressure sensitive adhesive layer 414, a first support layer 413, a first polarizer substrate 411, and an edge light blocking layer 412, a second support layer 415, and a functional layer 416 embedded in the first polarizer substrate 411, which are sequentially stacked. Specifically, the functional layer may include at least one of an antiglare surface treatment and an antireflection surface treatment; the second support layer may include zero-compensating cellulose triacetate; the first polarizer substrate may include polyvinyl alcohol, and the first polarizer substrate may change natural light into linear polarization; the first support layer may include polyethylene terephthalate, and the first support layer may provide mechanical support to the first polarizer substrate; the pressure-sensitive adhesive layer may be sodium polystyrene sulfonate, and the pressure-sensitive adhesive layer may realize adhesion of the first polarizer and the opposite substrate.
According to some embodiments of the present application, since the opposite substrate 300 side is used as the touch and display side of the display panel, the surface of the color film substrate 100 away from the opposite substrate 300 side is provided with the transparent conductive layer without adverse effect on the touch performance of the display panel, so the surface of the color film substrate 100 away from the opposite substrate 300 side may be provided with the transparent conductive layer, for example, the ITO conductive layer, through the surface of the color film substrate 100 away from the opposite substrate 300 side, the transparent conductive layer may realize the electrostatic shielding effect,
the application adopts the frame as the shading piece, and simultaneously, for the display panel without the frame size requirement, the pixel units which are the same as the first display area are arranged in the second display area, but the pixel units in the second display area are not electrically connected, or the black matrix of the second display area is not provided with an opening, so that the frame only covers the peripheral area and the second display area without the display function. The metal bright color of shielding metal wiring layer reflection is realized through the setting of frame, does not have influence to the display effect of first display area again for display panel's display effect is better.
Or, the frame is adopted as a shading piece, and for the display panel with a narrow frame size, a plurality of groups of pixel units with low aperture ratio are designed in the second display area, so that the second display area can play a display function and simultaneously weaken color stripes formed by uneven color mixing caused by covering the second display area by the frame. The arrangement of the frame can not only shield the metal bright color reflected by the metal wiring layer, but also relieve the bad generation of the edge color stripes, and can also effectively improve the screen occupation ratio of the display panel.
For the display panel with the requirement of extremely narrow frame size or no frame, the edge shading layer can be embedded in the corresponding position in the first polaroid, and the edge shading layer of the first polaroid is utilized to form a black edge, so that the structure of the display panel can be simplified while the metal brightness of the four-side metal wiring layer is effectively shielded.
In yet another aspect, the present application provides a display device including the aforementioned display panel. Therefore, the display device has all the features and advantages of the aforementioned display panel, and is not described herein.
In the description of the present specification, it should be understood that the terms "center," "thickness," "upper," "lower," "front," "rear," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
The above application provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples have been described above in order to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that various modifications and substitutions are possible within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (12)

1. A display panel, comprising:
the color film substrate and the opposite substrate are arranged oppositely, the color film substrate and the opposite substrate comprise a display area and a peripheral area which at least partially surrounds the display area, one side of the opposite substrate is the light emitting side of the display panel,
the opposite substrate is provided with a touch control layer and a metal wiring layer on one side facing the color film substrate, the touch control layer is positioned in the display area, and the metal wiring layer is positioned in the peripheral area;
the display panel comprises a shading piece, wherein the shading piece is configured to shade light rays reflected by the metal wiring layer from being emitted.
2. The display panel of claim 1, wherein the display panel comprises,
the shading piece comprises a frame, wherein the frame surrounds the side part of the display panel and extends to the edge of one side surface of the opposite substrate away from the touch layer;
the color film substrate comprises a first display area and a second display area which at least partially surrounds the first display area, the front projection of the frame on the color film substrate covers the peripheral area and at least part of the second display area, pixel units are arranged in the first display area and the second display area, and the pixel units comprise a plurality of color blocks.
3. The display panel of claim 2, wherein an aperture ratio of the pixel structures in the second display area is smaller than an aperture ratio of the pixel structures in the first display area.
4. A display panel according to claim 3, wherein the pixel elements comprise a black matrix between the color blocks, the black matrix between adjacent color blocks in the first display area having a width m, the black matrix between adjacent color blocks in the second display area having a width n, m being smaller than n.
5. The display panel of claim 2, wherein the pixel cells in the second display area comprise a black matrix layer between the color block in the second display area and the substrate of the color film substrate.
6. The display panel of claim 5, further comprising a liquid crystal layer between the color film substrate and the counter substrate, the liquid crystal layer having a support structure at a location corresponding to the second display region.
7. The display panel of claim 5, wherein the display panel comprises,
the pixel units in the first display area are electrically connected with the metal wiring layer, and the pixel units in the second display area are not electrically connected with the metal wiring layer.
8. The display panel according to any one of claims 2 to 5, wherein a width of the second display region in a direction from the first display region to the peripheral region is 1.7mm or more.
9. The display panel of claim 1, further comprising: the first polaroid is positioned on the surface of one side of the opposite substrate far away from the color film substrate; the second polaroid is positioned on the surface of one side of the color film substrate, which is far away from the opposite substrate.
10. The display panel of claim 9, wherein the light shield comprises a first polarizer comprising a first polarizer substrate and an edge light shield disposed at least partially around the first polarizer substrate, an orthographic projection of the edge light shield onto the opposing substrate at least covering an orthographic projection of the metal trace layer onto the opposing substrate.
11. The display panel according to claim 1, wherein a surface of the color film substrate on a side away from the opposite substrate has a transparent conductive layer, and a side of the opposite substrate on a side away from the color film substrate has an anti-reflection layer.
12. A display device comprising the display panel of any one of claims 1-11.
CN202310465653.6A 2023-04-26 2023-04-26 Display panel and display device Pending CN116594211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310465653.6A CN116594211A (en) 2023-04-26 2023-04-26 Display panel and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310465653.6A CN116594211A (en) 2023-04-26 2023-04-26 Display panel and display device

Publications (1)

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CN116594211A true CN116594211A (en) 2023-08-15

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Family Applications (1)

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